US20050151505A1 - Rechargeable battery device - Google Patents
Rechargeable battery device Download PDFInfo
- Publication number
- US20050151505A1 US20050151505A1 US11/074,125 US7412505A US2005151505A1 US 20050151505 A1 US20050151505 A1 US 20050151505A1 US 7412505 A US7412505 A US 7412505A US 2005151505 A1 US2005151505 A1 US 2005151505A1
- Authority
- US
- United States
- Prior art keywords
- rechargeable battery
- battery pack
- battery
- charging
- controller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
- G01K7/10—Arrangements for compensating for auxiliary variables, e.g. length of lead
- G01K7/12—Arrangements with respect to the cold junction, e.g. preventing influence of temperature of surrounding air
- G01K7/13—Circuits for cold-junction compensation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
- H02J7/00036—Charger exchanging data with battery
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with provisions for charging different types of batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the present invention relates to electronic devices, and, more particularly, to devices useful for battery charging.
- portable computers e.g., notebooks, laptops and palmtops
- portable computers typically use rechargeable batteries (e.g., lithium, nickel-cadmium, or nickel metal hydride) which weight just a few pounds and deliver 4 to 12 volts.
- rechargeable batteries e.g., lithium, nickel-cadmium, or nickel metal hydride
- Such batteries provide roughly three hours of computing time, but require about three times as long to be recharged.
- Such slow recharging is a problem and typically demands that users have several batteries with some recharging while others are being used.
- FIG. 1 a heuristically illustrates such a battery charger with V MAX the maximum voltage acceptable by the battery and I MAX the maximum current; the resistor R and V MAX are the adjustable values.
- FIG. 1 b is the load line for the battery charger of FIG. 1 a and shows the charging current I as a function of the battery voltage V. As the load line shows, the charging current begins at I MAX with a totally discharged battery as indicated by point A. The battery rapidly charges and its voltage increases and the charging current decreases with the operating point moving down the load line as shown by arrow B. Then as the battery voltage rises to near V MAX , the charging current falls to zero as indicated by point C. And the small charging current implies a large charging time. Indeed, most of the charging time will be during operation approaching point C.
- the different chemistries of various battery types preferably use differing recharging voltages, and varying battery capacities (sizes) demand differing charging currents.
- known battery chargers cannot automatically adapt to such a variety charging conditions and remain simple to use.
- the present invention provides battery charging with charging parameter values selected by communication with imbedded information in a battery pack and then adjusted during charging. This permits adaptation to various battery chemistries and capacities, and, in particular, allows for approximately constant current charging at various current levels and for trickle charging.
- FIGS. 1 a - b illustrate known battery chargers and their load lines
- FIG. 2 is schematic functional block diagram of a first preferred embodiment battery charger
- FIG. 3 is a state diagram for the first preferred embodiment
- FIG. 4 is a flow chart for communication by the first preferred embodiment
- FIGS. 5-7 show communication waveforms
- FIG. 8 illustrates identification memory organization
- FIG. 2 is a schematic functional block diagram of a first preferred embodiment battery charger, denoted generally by reference numeral 200 , connected to charge battery pack 250 with communication module 252 which preferably follows a one-wire communication interface.
- Battery charger 200 includes power transistor 202 , current sense resistor 204 , voltage sense node 205 , temperature sensor 206 affixed to battery pack 250 , ambient temperature sensor 207 , controller 210 , operational amplifier 214 , power transistor driver 218 , one-wire communication bus 220 , and three-wire bus 223 .
- controller 210 is coupled to battery pack 250 via communication terminal or bus 220 .
- Portion 270 of battery charger 200 may be formed as a single integrated circuit and provide low cost and ruggedness.
- Battery charger 200 can provide battery charging up to about 20 volts with 2.5 amp currents; this demands a separate power transistor 202 for cooling.
- Transistor 202 functions essentially as a current source and is coupled to controller 210 through driver 218 . (More generally, power transistor 202 could be replaced by a DC-to-DC converter.)
- the current source also comprises a current level detector 215 .
- Current level detector 215 comprises resistor 204 and difference amplifier 214 to detect the current level through resistor 204 and into battery pack 250 through output terminal 230
- Controller 210 also comprises an analog-to-digital converter to convert the analog current value detected by current level detector 215 , which is used to compute the present voltage of the batteries in battery pack 250 through Ohm's law (since the resistance is constant and known).
- the present voltage is compared to stored values of previous values of the voltages of the batteries in battery pack 250 , which were computed using the same method.
- Battery pack 250 may have various numbers of cells and cells of various chemistries which require various charging programs.
- Controller 210 acquires information about battery pack 250 through inquiry over the one-wire communication bus 220 .
- communication module 252 within battery pack 250 contains identification plus charging parameter values, such as maximum voltage V MAX and maximum current I MAX along with charge time and endpoint detection method.
- Controller 210 reads the identification and charging parameter values and configures itself accordingly. Note that the identification can be used for access control: battery charger 200 can refuse to charge a battery pack with an invalid identification.
- Controller 210 also has stored (in nonvolatile ROM) default charging parameter values.
- controller 210 when controller 210 is unable to read charging parameter values from battery pack 250 , it may read from its own ROM for default parameter values. After acquisition of parameter values, battery charger 200 begins charging battery pack 250 . Battery charger 200 may also communicate at high speed over a second communication terminal, which is preferably a three-wire bus 223 with a computer or other controller; this permits external analysis of the identification and charging parameter values read from communication module 252 plus external control of access and the charging parameter values.
- a second communication terminal which is preferably a three-wire bus 223 with a computer or other controller; this permits external analysis of the identification and charging parameter values read from communication module 252 plus external control of access and the charging parameter values.
- FIG. 3 is a state diagram for battery charger 200 which describes its operation and the charging parameters used.
- controller 210 converts the output of temperature sensors 206 and 207 to digital values, if necessary, using an analog-to-digital converter housed inside controller 210 , so that a comparator, which is embedded inside controller 210 can compare the temperature values outputted from temperature sensors 206 and 207 . These values are inputted into controller 210 through temperature sensor input terminal 209 , first temperature input terminal 209 a and second temperature input terminal 209 b .
- Temperature along with voltage and current are considered to be measured values, since they are routinely measured by controller 210 , and if the battery temperature (TB) is less than the upper temperature limit for trickle charge (T 5 ) and if the ambient temperature TA) is greater than the lower temperature for trickle charge (TO), battery charger 200 moves to an initial trickle charge state of applying a trickle charge current (I 3 ).
- the trickle charge current level is maintained by feedback from operational amplifier 214 measuring the charging current and then driving power transistor 202 .
- battery charger 200 stays in the one-wire communication state and provides a trickle charge I 3 to battery pack 250 until either a temperature changes, battery pack 250 is disconnected, or power failure occurs.
- the rapid charge current level and temperature limits may be parameter values read from communication module 252 .
- battery charger 200 moves to the standard charge state represented by the circle in the lower lefthand portion of FIG. 3 .
- the rapid charge termination events of significance depend upon battery cell chemistry; for example, nickel-cadmium cells have a voltage drop near maximum charge. This makes a positive battery voltage delta DELV a good indicator of full charge, with the size of a significant DELV varying with the number of cells in series in battery pack 250 .
- nickel-cadmium cells charge by an endothermic reaction and thus the battery temperature will not rise until full charge; this makes the battery temperature delta DELT another good indicator of full charge.
- these parameter values such as DELTLIM, t 0 LIMIT, T 2 may have been read from communication module 252 or could have been acquired over three-wire communication in the case of no communication module 252 .
- FIG. 4 is a flow chart of the communication by battery charger 200 with communication module 252 in battery pack 250
- FIGS. 5-7 illustrate signaling waveforms during one-wire communication.
- Controller 210 pulls the data line of communication bus 220 high (+5 volts) and this supplies the power to communication module 252 which includes an energy storage capacitor.
- the transient initial trickle charge state of battery charger 200 provides time for communication module 252 to store sufficient energy in its storage capacitor to power up its circuitry.
- Communication module 252 only responds to signals from controller 210 , and thus only requires power when communicating. Thus communication module 252 can communicate with controller 210 even when battery pack 250 is fully discharged.
- Controller 210 detects battery pack 250 by noting a positive voltage at voltage sense node 205 which derives from residual charge of battery pack 250 and initial charging by trickle charge being applied in the initial trickle charge state.
- controller 210 applies a reset signal on the data line of one-wire communication bus 220 by driving the data line low (ground) for about 480 microseconds ( ⁇ s) and then pulling the data line high (+5 volts) for about 480 ⁇ s.
- communication module 252 signals its presence with a presence detect signal by pulling the data line low during the 480 ⁇ s high.
- the pulldown in communication module 252 overpowers the pullup of controller 210 , so the data line goes low and controller 210 senses the low.
- Communication module 252 generates a nominal 120 ⁇ s time period for the pulldown presence detect pulse and applies this pulldown beginning a nominal 30 ⁇ s after controller 210 has returned the data line high.
- controller 210 samples the data line at 65-70 ⁇ s after it has returned the data line high. See FIG. 5 which shows the waveforms on the data line. Controller 210 may repeatedly apply reset signals on the data line in order to account for the delay in the connection of one-wire bus 220 to battery pack 250 after the connection to voltage sense node 205 .
- Communication module 252 responds to the high-to-low transition by reading the first bit in its memory onto the data line: when the first bit is a 0, then communication module 252 pulls down the data line for a nominal 30 ⁇ s so in effect the data line remains low and controller 210 detects this by sampling after 15 ⁇ s.
- FIG. 6 shows the read 0 waveforms on the data line.
- communication module 252 lets controller 210 pull up the data line; see FIG. 7 .
- This process of a high-to-low by controller 210 followed by a pulldown or no pulldown response of communication module 252 proceeds through the memory of communication module 252 until all 320 bits (64 identification bits plus 256 charging parameter value bits) have been read. The total read time thus may be less than 50 milliseconds.
- Communication module 252 has two memories: a 64-bit ROM for identification and a 256-bit EEPROM for charging parameter values.
- FIG. 8 illustrates the content of the 64 bits of ROM.
- controller 210 applies a Cyclic Redundancy Check (CRC) algorithm to the first 56 bits to compare to the last eight bits to verify that the communication was error free (Verify ROM CRC).
- CRC Cyclic Redundancy Check
- the preferred embodiments may be modified in many ways while retaining one of more of the features of a battery charger with charging parameter values selected by communication with a battery pack to be charged and using multiple constant charging currents with multiple endpoint determinants.
- the memory in the battery pack could be all ROM or all EEPROM, or EPROM, a mixture of two memory types; the communication could be over full duplex or other than one-wire, and the memory may have its own power supply to be operative with a discharged battery pack; sensors for endpoint determinants other than temperature increment and voltage increment may be used; the power transistor could be a switching AC-DC converter or a switching DC-DC converter; the controller may have nonvolatile memory orjust registers for holding charging parameter values; and so forth.
Abstract
A battery charger obtains parameter values derived from communication from a battery pack being charged. The battery pack has at least one rechargeable cell, a semiconductor device that stores the charging parameters for the rechargeable cell and communication bus configured to communicate with a battery charger device. The battery pack may have an identification number. A lack of communication between the battery pack and a charger may invoke a default charging program or denial of access to the charger.
Description
- This U.S. patent application is a continuation of U.S. patent application Ser. No. 10/348,584, filed Jan. 21, 2003; which is a continuation of U.S. patent application Ser. No. 09/454,275, filed Dec, 26, 1998, abandoned; which is a continuation of Ser. No. 09/178,675, filed Oct. 26, 1998, issued Jan. 25, 2000 as U.S. Pat. No. 6,018,222; which is a continuation of Ser. No. 08/901,068, filed Jul. 28, 1997, issued Feb. 2, 1999 as U.S. Pat. No. 5,867,006; which is a continuation of Ser. No. 08/764,285, filed Dec. 12, 1996, issued Dec. 2, 1997 as U.S. Pat. No. 5,694,024; which is a continuation of Ser. No. 07/957,571, filed Oct. 7, 1992, issued Jan. 7, 1997 as U.S. Pat. No. 5,592,069.
- All of the material in this patent application is subject to copyright protection under the copyright laws of the United States and of other countries. As of the first effective filing date of the present application, this material is protected as unpublished material.
- Portions of the material in the specification and drawings of this patent application are also subject to protection under the maskwork registration laws of the United States and of other countries.
- However, permission to copy this material is hereby granted to the extent that the owner of the copyright and maskwork rights has no objection to the facsimile reproduction by anyone of the patent document or patent disclosure, as it appears in the United States Patent and Trademark Office patent file or records, but otherwise reserves all copyright and maskwork rights whatsoever.
- The present invention relates to electronic devices, and, more particularly, to devices useful for battery charging.
- Battery Chargers
- The widespread use of battery-powered portable computers (e.g., notebooks, laptops and palmtops) with high performance relies on efficient battery utilization. In particular, portable computers typically use rechargeable batteries (e.g., lithium, nickel-cadmium, or nickel metal hydride) which weight just a few pounds and deliver 4 to 12 volts. Such batteries provide roughly three hours of computing time, but require about three times as long to be recharged. Such slow recharging is a problem and typically demands that users have several batteries with some recharging while others are being used.
- Known battery chargers apply a constant voltage across a discharged battery with the applied voltage determined by the maximum voltage acceptable by the battery.
FIG. 1 a heuristically illustrates such a battery charger with VMAX the maximum voltage acceptable by the battery and IMAX the maximum current; the resistor R and VMAX are the adjustable values.FIG. 1 b is the load line for the battery charger ofFIG. 1 a and shows the charging current I as a function of the battery voltage V. As the load line shows, the charging current begins at IMAX with a totally discharged battery as indicated by point A. The battery rapidly charges and its voltage increases and the charging current decreases with the operating point moving down the load line as shown by arrow B. Then as the battery voltage rises to near VMAX, the charging current falls to zero as indicated by point C. And the small charging current implies a large charging time. Indeed, most of the charging time will be during operation approaching point C. - Furthermore, the different chemistries of various battery types preferably use differing recharging voltages, and varying battery capacities (sizes) demand differing charging currents. However, known battery chargers cannot automatically adapt to such a variety charging conditions and remain simple to use.
- Features
- The present invention provides battery charging with charging parameter values selected by communication with imbedded information in a battery pack and then adjusted during charging. This permits adaptation to various battery chemistries and capacities, and, in particular, allows for approximately constant current charging at various current levels and for trickle charging.
- The present invention will be described with reference to the accompanying drawings, which are schematic for clarity.
-
FIGS. 1 a-b illustrate known battery chargers and their load lines; -
FIG. 2 is schematic functional block diagram of a first preferred embodiment battery charger; -
FIG. 3 is a state diagram for the first preferred embodiment; -
FIG. 4 is a flow chart for communication by the first preferred embodiment; -
FIGS. 5-7 show communication waveforms; and -
FIG. 8 illustrates identification memory organization. - Functional Overview
-
FIG. 2 is a schematic functional block diagram of a first preferred embodiment battery charger, denoted generally byreference numeral 200, connected tocharge battery pack 250 withcommunication module 252 which preferably follows a one-wire communication interface.Battery charger 200 includespower transistor 202,current sense resistor 204,voltage sense node 205,temperature sensor 206 affixed tobattery pack 250,ambient temperature sensor 207,controller 210,operational amplifier 214,power transistor driver 218, one-wire communication bus 220, and three-wire bus 223. Referring toFIG. 2 ,controller 210 is coupled tobattery pack 250 via communication terminal orbus 220. Portion 270 ofbattery charger 200 may be formed as a single integrated circuit and provide low cost and ruggedness. -
Battery charger 200 can provide battery charging up to about 20 volts with 2.5 amp currents; this demands aseparate power transistor 202 for cooling.Transistor 202 functions essentially as a current source and is coupled to controller 210 throughdriver 218. (More generally,power transistor 202 could be replaced by a DC-to-DC converter.) The current source also comprises acurrent level detector 215.Current level detector 215 comprisesresistor 204 anddifference amplifier 214 to detect the current level throughresistor 204 and intobattery pack 250 through output terminal 230Controller 210 also comprises an analog-to-digital converter to convert the analog current value detected bycurrent level detector 215, which is used to compute the present voltage of the batteries inbattery pack 250 through Ohm's law (since the resistance is constant and known). The present voltage is compared to stored values of previous values of the voltages of the batteries inbattery pack 250, which were computed using the same method.Battery pack 250 may have various numbers of cells and cells of various chemistries which require various charging programs.Controller 210 acquires information aboutbattery pack 250 through inquiry over the one-wire communication bus 220. In particular,communication module 252 withinbattery pack 250 contains identification plus charging parameter values, such as maximum voltage VMAX and maximum current IMAX along with charge time and endpoint detection method.Controller 210 reads the identification and charging parameter values and configures itself accordingly. Note that the identification can be used for access control:battery charger 200 can refuse to charge a battery pack with an invalid identification.Controller 210 also has stored (in nonvolatile ROM) default charging parameter values. Thus whencontroller 210 is unable to read charging parameter values frombattery pack 250, it may read from its own ROM for default parameter values. After acquisition of parameter values,battery charger 200 begins chargingbattery pack 250.Battery charger 200 may also communicate at high speed over a second communication terminal, which is preferably a three-wire bus 223 with a computer or other controller; this permits external analysis of the identification and charging parameter values read fromcommunication module 252 plus external control of access and the charging parameter values. - Operation
-
FIG. 3 is a state diagram forbattery charger 200 which describes its operation and the charging parameters used.Battery charger 200 begins in the upper righthand circle ofFIG. 3 which represents the state of no power supply (PF=1). No power implies no charging current (I=0) becausepower transistor 202 cannot be turned on. Also, the charging timer withincontroller 210 will not be running (TMRRST=1).Controller 210 has an internal voltage regulator, so a 25 volt power supply may be used as illustrated to provide charging of multicell battery packs. - When power is supplied to charger 200 (PF=0), it first checks the inputs of
temperature sensors controller 210 converts the output oftemperature sensors controller 210, so that a comparator, which is embedded insidecontroller 210 can compare the temperature values outputted fromtemperature sensors controller 210 through temperaturesensor input terminal 209, firsttemperature input terminal 209 a and secondtemperature input terminal 209 b. Temperature along with voltage and current are considered to be measured values, since they are routinely measured bycontroller 210, and if the battery temperature (TB) is less than the upper temperature limit for trickle charge (T5) and if the ambient temperature TA) is greater than the lower temperature for trickle charge (TO),battery charger 200 moves to an initial trickle charge state of applying a trickle charge current (I3). The circle in the center ofFIG. 3 represents this initial trickle charge state (I=I3). The trickle charge current level is maintained by feedback fromoperational amplifier 214 measuring the charging current and then drivingpower transistor 202. This initial trickle charge state does not have the charging timer running (TMRRST=1) but does immediately detect the presence or absence of abattery pack 250 by detecting a positive or zero voltage at thevoltage sense node 205. If nobattery pack 250 is connected (BDET=0) or if a power failure occurs (PF=1), thenbattery charger 200 reverts back to the no power state. Contrarily, ifbattery charger 200 detects the presence of a connected battery pack, thenbattery charger 200 moves to the one-wire communication state represented by the circle in the upper lefthand comer ofFIG. 3 . That is, the initial trickle charge state is just a transient state battery. - In the one-wire
communication state charger 200 maintains the trickle charge current to the connected battery pack 250 (I=I3) and the charging timer remains off (TMRRST=1). Further,battery charger 200 sends a reset signal over the one-wire communication bus 220 to initiate a read (1 WIRE RD) of the identification and charging parameter values incommunication module 252 ofbattery pack 250.Battery charger 200 either reads a recognizable identification to permit charging or not. When an acceptable identification is read but no charging parameter values,communication module 252 reads from its ROM default charging parameter values.Controller 210 loads the charging parameter values into registers to configure its various subcircuits for comparisons of measured charging parameters with the loaded values. If at any time during this one-wire communication power fails orbattery pack 250 is disconnected or the ambient temperature falls below the trickle charge minimum or the battery temperature rises above the trickle charge maximum,battery charger 200 reverts to the no power state. Otherwise, after completing the one-wire communication (OWRCMPLT=1),battery charger 200 again checks the ambient and battery temperatures fromsensors battery charger 200 switches to a state of rapid charge represented by the circle in the lefthand center ofFIG. 3 . However, if the temperatures do not satisfy the inequalities,battery charger 200 stays in the one-wire communication state and provides a trickle charge I3 tobattery pack 250 until either a temperature changes,battery pack 250 is disconnected, or power failure occurs. Note that the rapid charge current level and temperature limits may be parameter values read fromcommunication module 252. - In the rapid
charge state controller 210 drives the charging current up to I1 and starts the charging timer (I=I1 and TMRRST=0). If there is a power failure orbattery pack 250 is disconnected, thenbattery charger 200 again reverts to the no power state; otherwise, the rapid charge state persists andbattery charger 200 supplies a charging current I1 tobattery pack 250 until one of the following occurs: (1) the battery voltage parameter (VBAT) measured atvoltage sense node 205 exceeds the parameter value (VBATLIM) read fromcommunication module 252, (2) the parameter battery voltage delta (peak battery voltage sensed atvoltage sense node 205 so far during the charging minus the battery voltage now sensed) (DELV) exceeds the parameter value (DELVLIM) read fromcommunication module 252 and the charging timer has been running for more than 5 minutes, (3) the charging timer has been running longer than the time for rapid charge parameter value (t0LIM) read frombattery module 252, (4) the ambient temperature is below parameter value T2, (5) the battery temperature is above parameter value T3, or (6) the battery temperature delta (equal to TB-TA) (DELT) exceeds the parameter value (DELTLIM) read fromcommunication module 252. When one of these six events occurs,battery charger 200 moves to the standard charge state represented by the circle in the lower lefthand portion ofFIG. 3 . Note that the rapid charge termination events of significance depend upon battery cell chemistry; for example, nickel-cadmium cells have a voltage drop near maximum charge. This makes a positive battery voltage delta DELV a good indicator of full charge, with the size of a significant DELV varying with the number of cells in series inbattery pack 250. Similarly, nickel-cadmium cells charge by an endothermic reaction and thus the battery temperature will not rise until full charge; this makes the battery temperature delta DELT another good indicator of full charge. Again, these parameter values such as DELTLIM, t0LIMIT, T2 may have been read fromcommunication module 252 or could have been acquired over three-wire communication in the case of nocommunication module 252. - In the standard
charge state controller 210 drives the charging current to I2 and restarts the charging timer (I=I2) and TMRRST=0). If there is a power failure orbattery pack 250 is disconnected, thenbattery charger 200 again reverts to the no power state; otherwise, the standard charge state persists andbattery charger 200 supplies a charging current I2 tobattery pack 250 until one of the following events occurs: (1) the battery voltage (VBAT) sensed atvoltage sense node 205 exceeds the maximum battery voltage during charge (VBATLIM), (2) the charging timer has been running longer than the maximum time for standard charge (t1LIM), (3) the ambient temperature is below the lower temperature limit for standard charge (T1), or (4) the battery temperature is above the upper temperature limit for standard charge (T4). When one of these four events occurs,battery charger 200 moves to the trickle charge state represented by the circle in the lower center ofFIG. 3 . - In the trickle
charge state controller 210 drives the charging current back to I3 and stops the charging timer (I=I3 and TMRRST=1). If there is a power failure orbattery pack 250 is disconnected or the battery voltage VBAT exceeds the maximum VBATLIM, thenbattery charger 200 once again reverts to the no power state; otherwise, the trickle charge state persists andbattery charger 200 supplies a charging current I3 tobattery pack 250 until either (1) the ambient temperature is below TO or (2) the battery temperature is above T5. When one of these two events occurs,battery charger 200 moves to the standby state represented by the circle in the lower righthand portion ofFIG. 3 . - In the
standby state controller 210 turns offpower transistor 202 and stops the charging timer (I=I3 and TMRRST=1). If there is a power failure orbattery pack 250 is disconnected, thenbattery charger 200 once again reverts to the no power state; otherwise, the standby state persists withbattery charger 200 not supply any charging current I3 tobattery pack 250 until either (1) the ambient temperature is rises above TO or (2) the battery temperature falls below T5. When one of these two events occurs,battery charger 200 returns to the trickle charge state from whence it came and repeats itself. - One-Wire Communication
-
FIG. 4 is a flow chart of the communication bybattery charger 200 withcommunication module 252 inbattery pack 250, andFIGS. 5-7 illustrate signaling waveforms during one-wire communication.Controller 210 pulls the data line ofcommunication bus 220 high (+5 volts) and this supplies the power tocommunication module 252 which includes an energy storage capacitor. The transient initial trickle charge state ofbattery charger 200 provides time forcommunication module 252 to store sufficient energy in its storage capacitor to power up its circuitry.Communication module 252 only responds to signals fromcontroller 210, and thus only requires power when communicating. Thuscommunication module 252 can communicate withcontroller 210 even whenbattery pack 250 is fully discharged. - The flow shown of
FIG. 4 begins with Battery Detect=1 which is the detection ofbattery pack 250 connected tovoltage sense node 205; this corresponds to the movement from the initial trickle charge state to the communication state inFIG. 3 .Controller 210 detectsbattery pack 250 by noting a positive voltage atvoltage sense node 205 which derives from residual charge ofbattery pack 250 and initial charging by trickle charge being applied in the initial trickle charge state. - Once
battery pack 250 has been detected,controller 210 applies a reset signal on the data line of one-wire communication bus 220 by driving the data line low (ground) for about 480 microseconds (μs) and then pulling the data line high (+5 volts) for about 480 μs. In response to the 480 μs low reset signal,communication module 252 signals its presence with a presence detect signal by pulling the data line low during the 480 μs high. The pulldown incommunication module 252 overpowers the pullup ofcontroller 210, so the data line goes low andcontroller 210 senses the low.Communication module 252 generates a nominal 120μs time period for the pulldown presence detect pulse and applies this pulldown beginning a nominal 30 μs aftercontroller 210 has returned the data line high. However, this time period may vary by a factor of 2 amongst communication modules, socontroller 210 samples the data line at 65-70 μs after it has returned the data line high. SeeFIG. 5 which shows the waveforms on the data line.Controller 210 may repeatedly apply reset signals on the data line in order to account for the delay in the connection of one-wire bus 220 tobattery pack 250 after the connection tovoltage sense node 205. - If the sampling of the data line by
controller 210 does not reveal a presence detect signal (Reconfigurable=1 not true inFIG. 4 ), thencontroller 210 will use its default charging parameter values by reading them from its memory (Default Parameters Available and Load Configure RAM From EEPROM inFIG. 4 ). Conversely, ifcontroller 210 senses the data line low (Reconfigurable=1), then it continues with one-wire communication and drives the data line low for 1+μs and then pulls the data line high again to allow the response ofcommunication module 252 to control the data line.Communication module 252 responds to the high-to-low transition by reading the first bit in its memory onto the data line: when the first bit is a 0, thencommunication module 252 pulls down the data line for a nominal 30μs so in effect the data line remains low andcontroller 210 detects this by sampling after 15 μs.FIG. 6 shows theread 0 waveforms on the data line. Contrarily, when the first bit is a 1, thencommunication module 252 letscontroller 210 pull up the data line; seeFIG. 7 . This process of a high-to-low bycontroller 210 followed by a pulldown or no pulldown response ofcommunication module 252 proceeds through the memory ofcommunication module 252 until all 320 bits (64 identification bits plus 256 charging parameter value bits) have been read. The total read time thus may be less than 50 milliseconds. -
Communication module 252 has two memories: a 64-bit ROM for identification and a 256-bit EEPROM for charging parameter values.FIG. 8 illustrates the content of the 64 bits of ROM. In particular, the first eight bits indicate the family of communication modules to whichcommunication module 252 belongs (Family Code=Charger inFIG. 4 ). If this family is for a battery pack with a manufacturer's identification (Use Manufacturer ID inFIG. 4 ), then the next sixteen bits read (B8-B23=Manufacturer ID) may be decoded to check identification of the manufacturer ofcommunication module 252 and perhaps prevent charging bybattery charger 200. Lastly, after 64 bits have been read from the ROM,controller 210 applies a Cyclic Redundancy Check (CRC) algorithm to the first 56 bits to compare to the last eight bits to verify that the communication was error free (Verify ROM CRC). - After reading the ROM of
communication module 252,controller 210 then reads the 256 bits of EEPROM to get charging parameter values for operation (Read Config Data Into Charger Config RAM). The reading of the parameter values is also checked by a CRC byte (Verify RAM CRC). Once the EEPROM has been read, the one-wire communication is complete (One Wire Read Complete inFIG. 4 and OWRDMPLT=1 inFIG. 3 ).Battery charger 200 then switches into the rapid charge state using the charging parameter values read fromcommunication module 252. - U.S. Pat. No. 5,045,675 contains a discussion of one-wire communication and serial memory reading and is hereby incorporated by reference.
- Further Modifications and Variations
- The preferred embodiments may be modified in many ways while retaining one of more of the features of a battery charger with charging parameter values selected by communication with a battery pack to be charged and using multiple constant charging currents with multiple endpoint determinants. For example, the memory in the battery pack could be all ROM or all EEPROM, or EPROM, a mixture of two memory types; the communication could be over full duplex or other than one-wire, and the memory may have its own power supply to be operative with a discharged battery pack; sensors for endpoint determinants other than temperature increment and voltage increment may be used; the power transistor could be a switching AC-DC converter or a switching DC-DC converter; the controller may have nonvolatile memory orjust registers for holding charging parameter values; and so forth.
Claims (7)
1. A rechargeable battery pack comprising:
at least on rechargeable batter cell;
at least one sensor selected from the group consisting of a temperature sensor, a current sensor and a voltage sensor, or combination thereof, capable of generating dynamic data concerning said rechargeable battery pack;
a semiconductor memory affixed to said rechargeable battery pack capable of storing a plurality of data bits indicative of at least one charging parameter of said rechargeable battery pack and a digital representation of said generated dynamic data concerning said rechargeable battery pack;
a communication bus configured to transmit at least some of the data bits concerning said rechargeable battery pack that are stored within the semiconductor memory.
2. The rechargeable battery pack of claim 1 , wherein said semiconductor memory comprises at least on location holding a presorted serial number.
3. A rechargeable battery device comprising:
at least one rechargeable battery cell;
sensor means configured to monitor a physical attribute of said at least one rechargeable battery cell;
a digital memory comprising a battery pack ID, and charging parameter values; and
connections for said at least one rechargeable battery cell, said sensor means, and said digital memory to connect to another device.
4. The rechargeable battery device of claim 3 , wherein said digital memory is part of a module.
5. The rechargeable battery device of claim 3 , wherein said sensor means comprises a volt sensor.
6. A rechargeable battery pack, comprising:
a rechargeable battery cell;
a memory device configured to store charging parameters for said rechargeable battery cell;
connections for said rechargeable battery cell and said memory device to connect to another device.
7. The rechargeable battery pack of claim 6 , wherein said another device is a battery charger device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/074,125 US20050151505A1 (en) | 1992-10-07 | 2005-03-07 | Rechargeable battery device |
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/957,571 US5592069A (en) | 1992-10-07 | 1992-10-07 | Battery charger |
US08/764,285 US5694024A (en) | 1992-10-07 | 1996-12-12 | Battery charger |
US08/901,068 US5867006A (en) | 1992-10-07 | 1997-07-28 | Battery charger |
US09/178,675 US6018228A (en) | 1992-10-07 | 1998-10-26 | Rechargeable battery pack capable of transmitting dynamic data about itself |
US45427599A | 1999-12-03 | 1999-12-03 | |
US10/348,584 US6969970B2 (en) | 1992-10-07 | 2003-01-21 | Method of controlling the charging of a battery |
US11/074,125 US20050151505A1 (en) | 1992-10-07 | 2005-03-07 | Rechargeable battery device |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/348,584 Continuation US6969970B2 (en) | 1992-10-07 | 2003-01-21 | Method of controlling the charging of a battery |
Publications (1)
Publication Number | Publication Date |
---|---|
US20050151505A1 true US20050151505A1 (en) | 2005-07-14 |
Family
ID=25499786
Family Applications (7)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/957,571 Expired - Lifetime US5592069A (en) | 1992-10-07 | 1992-10-07 | Battery charger |
US08/764,285 Expired - Lifetime US5694024A (en) | 1992-10-07 | 1996-12-12 | Battery charger |
US08/901,068 Expired - Lifetime US5867006A (en) | 1992-10-07 | 1997-07-28 | Battery charger |
US09/178,675 Expired - Lifetime US6018228A (en) | 1992-10-07 | 1998-10-26 | Rechargeable battery pack capable of transmitting dynamic data about itself |
US09/973,155 Abandoned US20020117993A1 (en) | 1992-10-07 | 2001-10-09 | Battery charger |
US10/348,584 Expired - Fee Related US6969970B2 (en) | 1992-10-07 | 2003-01-21 | Method of controlling the charging of a battery |
US11/074,125 Abandoned US20050151505A1 (en) | 1992-10-07 | 2005-03-07 | Rechargeable battery device |
Family Applications Before (6)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US07/957,571 Expired - Lifetime US5592069A (en) | 1992-10-07 | 1992-10-07 | Battery charger |
US08/764,285 Expired - Lifetime US5694024A (en) | 1992-10-07 | 1996-12-12 | Battery charger |
US08/901,068 Expired - Lifetime US5867006A (en) | 1992-10-07 | 1997-07-28 | Battery charger |
US09/178,675 Expired - Lifetime US6018228A (en) | 1992-10-07 | 1998-10-26 | Rechargeable battery pack capable of transmitting dynamic data about itself |
US09/973,155 Abandoned US20020117993A1 (en) | 1992-10-07 | 2001-10-09 | Battery charger |
US10/348,584 Expired - Fee Related US6969970B2 (en) | 1992-10-07 | 2003-01-21 | Method of controlling the charging of a battery |
Country Status (1)
Country | Link |
---|---|
US (7) | US5592069A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060056813A1 (en) * | 2004-09-14 | 2006-03-16 | Marvell International Ltd. | Unified control and memory for a combined DVD/HDD system |
US20060114027A1 (en) * | 2004-11-29 | 2006-06-01 | Sehat Sutardja | Low voltage logic operation using higher voltage supply levels |
US20060114019A1 (en) * | 2004-11-29 | 2006-06-01 | Sehat Sutardja | Low voltage logic operation using higher voltage supply levels |
US20080197707A1 (en) * | 2007-02-16 | 2008-08-21 | Broadcom Corporation | Power management unit with battery detection |
US20090278504A1 (en) * | 2008-05-07 | 2009-11-12 | Fujifilm Corporation | Digital cassette charging apparatus, digital cassette charging system, and digital cassette charging method |
US20110133694A1 (en) * | 2009-12-04 | 2011-06-09 | Hyundai Motor Company | Method for controlling charging voltage of 12v auxiliary battery for hybrid vehicle |
US20150073591A1 (en) * | 2011-01-14 | 2015-03-12 | Siemens Aktiengesellschaft | Charging device for charging a vehicle accumulator |
US20170194798A1 (en) * | 2016-01-05 | 2017-07-06 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Quick charging method, mobile terminal, and power adapter |
US11451067B2 (en) * | 2017-12-19 | 2022-09-20 | Intel Corporation | Method, apparatus and system to enhance a device policy manager to manage devices based on battery condition |
Families Citing this family (126)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6369576B1 (en) * | 1992-07-08 | 2002-04-09 | Texas Instruments Incorporated | Battery pack with monitoring function for use in a battery charging system |
US6107802A (en) * | 1992-07-08 | 2000-08-22 | Matthews; Wallace Edward | Battery pack with monitoring function utilizing association with a battery charging system |
US5592069A (en) * | 1992-10-07 | 1997-01-07 | Dallas Semiconductor Corporation | Battery charger |
US5825155A (en) * | 1993-08-09 | 1998-10-20 | Kabushiki Kaisha Toshiba | Battery set structure and charge/ discharge control apparatus for lithium-ion battery |
US6060864A (en) * | 1994-08-08 | 2000-05-09 | Kabushiki Kaisha Toshiba | Battery set structure and charge/discharge control apparatus for lithium-ion battery |
JP3902253B2 (en) * | 1994-12-26 | 2007-04-04 | ヤマハ発動機株式会社 | Rechargeable battery charging method |
JP3699498B2 (en) * | 1994-12-26 | 2005-09-28 | ヤマハ発動機株式会社 | Method for determining connection between secondary battery and charger |
US5732207A (en) * | 1995-02-28 | 1998-03-24 | Intel Corporation | Microprocessor having single poly-silicon EPROM memory for programmably controlling optional features |
KR970024434A (en) * | 1995-10-12 | 1997-05-30 | 김광호 | Combined Battery Charger and Control Method |
US6522361B2 (en) * | 1996-03-08 | 2003-02-18 | Sony Corporation | Electronic apparatus having the function of displaying the battery residual quantity and method for displaying the battery residual quantity |
US5717307A (en) * | 1996-07-24 | 1998-02-10 | Motorola, Inc. | Apparatus and method for identifying the type and brand of a battery for a portable device |
US5900718A (en) * | 1996-08-16 | 1999-05-04 | Total Battery Management, | Battery charger and method of charging batteries |
JP3466029B2 (en) * | 1996-09-27 | 2003-11-10 | ローム株式会社 | Charger |
KR100263551B1 (en) * | 1996-10-12 | 2000-08-01 | 윤종용 | Secondary battery charging circuit |
KR100222074B1 (en) * | 1996-12-17 | 1999-10-01 | 윤종용 | Constant power charging circuit and portable computer using the same |
KR100281536B1 (en) * | 1997-01-06 | 2001-02-15 | 윤종용 | Computer with Battery Detection and Control |
US5764030A (en) * | 1997-03-14 | 1998-06-09 | International Components Corporation | Microcontrolled battery charger |
CN1139019C (en) * | 1997-06-27 | 2004-02-18 | 三洋电机株式会社 | Packed battery tester |
US6008652A (en) * | 1998-02-13 | 1999-12-28 | Chrysler Corporation | Battery tub tester |
US6218809B1 (en) | 1998-03-20 | 2001-04-17 | Dallas Semiconductor Corporation | Method for monitoring operating parameters of a rechargeable power supply |
US6198250B1 (en) | 1998-04-02 | 2001-03-06 | The Procter & Gamble Company | Primary battery having a built-in controller to extend battery run time |
US6163131A (en) * | 1998-04-02 | 2000-12-19 | The Procter & Gamble Company | Battery having a built-in controller |
US6074775A (en) * | 1998-04-02 | 2000-06-13 | The Procter & Gamble Company | Battery having a built-in controller |
US6118248A (en) * | 1998-04-02 | 2000-09-12 | The Procter & Gamble Company | Battery having a built-in controller to extend battery service run time |
US6835491B2 (en) | 1998-04-02 | 2004-12-28 | The Board Of Trustees Of The University Of Illinois | Battery having a built-in controller |
KR100281528B1 (en) * | 1998-04-29 | 2001-02-15 | 윤종용 | Power supply circuit |
US6218806B1 (en) | 1998-06-03 | 2001-04-17 | Black & Decker Inc. | Method and apparatus for obtaining product use information |
US6175211B1 (en) | 1999-04-15 | 2001-01-16 | Black & Decker Inc. | Battery pack with identification device |
US6018227A (en) | 1998-06-22 | 2000-01-25 | Stryker Corporation | Battery charger especially useful with sterilizable, rechargeable battery packs |
JP2000031882A (en) * | 1998-07-10 | 2000-01-28 | Mitsubishi Electric Corp | Portable information device system |
US6249105B1 (en) * | 1998-11-13 | 2001-06-19 | Neal Andrews | System and method for detecting performance components of a battery pack |
US6181102B1 (en) * | 1998-11-13 | 2001-01-30 | Agilent Technologies, Inc. | Battery pack chemistry detection and identification system and method |
US6100667A (en) * | 1999-01-21 | 2000-08-08 | National Semiconductor Corporation | Current-to-voltage transition control of a battery charger |
EP1037065B1 (en) * | 1999-02-18 | 2004-09-22 | STMicroelectronics S.r.l. | Battery charge monitor for an electronic appliance |
US6114842A (en) * | 1999-10-26 | 2000-09-05 | Kaiser Systems, Inc. | Precision voltage regulator for capacitor-charging power supply |
US6184655B1 (en) | 1999-12-10 | 2001-02-06 | Stryker Corporation | Battery charging system with internal power manager |
US6344733B1 (en) | 2000-01-31 | 2002-02-05 | Snap-On Technologies, Inc. | Portable jump-starting battery pack with charge monitoring system |
EP1128517A3 (en) * | 2000-02-24 | 2003-12-10 | Makita Corporation | Adapters for rechargeable battery packs |
US6348777B1 (en) * | 2000-02-29 | 2002-02-19 | Alaris Medical Systems, Inc. | Power management system |
JP3727508B2 (en) * | 2000-04-13 | 2005-12-14 | 株式会社マキタ | Charging device and battery charging characteristics update method |
AU767044B2 (en) * | 2000-04-14 | 2003-10-30 | Zip Charge Corporation | Charging apparatus, charging method, charging system and recording medium |
US20020000789A1 (en) * | 2000-04-21 | 2002-01-03 | Haba Chaz G | Charger assembly |
IT1314628B1 (en) * | 2000-05-05 | 2002-12-20 | S P E Elettronica Ind Di Polet | UNIVERSAL APPARATUS AND METHOD FOR CHARGING BATTERIES |
AU731475B3 (en) * | 2000-06-12 | 2001-03-29 | Tempa Communication, Inc. | Mobile phone battery pack with recording device for memorizing recharged number of times |
US6429622B1 (en) | 2000-11-14 | 2002-08-06 | Telefonaktiebolaget L M Ericsson (Publ) | Method and apparatus for authenticating a charging unit by a portable battery-operated electronic device |
JP2002320341A (en) * | 2001-02-14 | 2002-10-31 | Sony Corp | Charge/discharge device and method therefor, power supply device and method therefor, power supply system and method therefor, program storage medium, and program thereof |
US7126310B1 (en) | 2001-04-20 | 2006-10-24 | Abiomed, Inc. | Apparatus and method for balanced charging of a multiple-cell battery pack |
US7479763B2 (en) * | 2001-06-22 | 2009-01-20 | Midtronics, Inc. | Apparatus and method for counteracting self discharge in a storage battery |
DE10149978A1 (en) * | 2001-10-10 | 2003-05-08 | Siemens Ag | Method and device for charging accumulators |
US7573159B1 (en) | 2001-10-22 | 2009-08-11 | Apple Inc. | Power adapters for powering and/or charging peripheral devices |
WO2003036777A1 (en) * | 2001-10-22 | 2003-05-01 | Apple Computer, Inc. | Methods and apparatus for charging a battery in a peripheral device |
US6937947B2 (en) * | 2002-08-20 | 2005-08-30 | Lsi Logic Corporation | Battery charger system and method for providing detailed battery status and charging method information |
US7176654B2 (en) | 2002-11-22 | 2007-02-13 | Milwaukee Electric Tool Corporation | Method and system of charging multi-cell lithium-based batteries |
US7425816B2 (en) * | 2002-11-22 | 2008-09-16 | Milwaukee Electric Tool Corporation | Method and system for pulse charging of a lithium-based battery |
US8471532B2 (en) | 2002-11-22 | 2013-06-25 | Milwaukee Electric Tool Corporation | Battery pack |
US7157882B2 (en) * | 2002-11-22 | 2007-01-02 | Milwaukee Electric Tool Corporation | Method and system for battery protection employing a selectively-actuated switch |
US7589500B2 (en) | 2002-11-22 | 2009-09-15 | Milwaukee Electric Tool Corporation | Method and system for battery protection |
JP2004364446A (en) * | 2003-06-06 | 2004-12-24 | Matsushita Electric Ind Co Ltd | Charge/discharge control device of backup battery |
US7405536B2 (en) * | 2003-10-08 | 2008-07-29 | Black & Decker Inc. | Battery pack-detecting charger |
JP2005143211A (en) * | 2003-11-06 | 2005-06-02 | Alps Electric Co Ltd | Battery charger |
US7868486B2 (en) | 2004-01-15 | 2011-01-11 | Comarco Wireless Technologies, Inc | Power supply having source determination circuitry utilized to disable battery charging circuitry in powered device |
US9153960B2 (en) | 2004-01-15 | 2015-10-06 | Comarco Wireless Technologies, Inc. | Power supply equipment utilizing interchangeable tips to provide power and a data signal to electronic devices |
US7317297B1 (en) * | 2004-07-15 | 2008-01-08 | National Semiconductor Corporation | Battery temperature sensor pin used as communication channel |
US7581119B2 (en) * | 2004-07-18 | 2009-08-25 | Apple Inc. | Method and system for discovering a power source on a peripheral bus |
US7363518B2 (en) * | 2004-07-22 | 2008-04-22 | Dell Products L.P. | Information handling system with power fault protection circuit |
KR100938075B1 (en) * | 2004-08-30 | 2010-01-21 | 삼성에스디아이 주식회사 | Smart battery and battery discrimination method using it |
US20060089844A1 (en) * | 2004-10-26 | 2006-04-27 | Aerovironment, Inc., A California Corporation | Dynamic replenisher management |
US7444192B2 (en) * | 2004-10-26 | 2008-10-28 | Aerovironment, Inc. | Reactive replenishable device management |
US7541776B2 (en) * | 2004-12-10 | 2009-06-02 | Apple Inc. | Method and system for operating a portable electronic device in a power-limited manner |
US7525216B2 (en) | 2005-01-07 | 2009-04-28 | Apple Inc. | Portable power source to provide power to an electronic device via an interface |
US8065443B1 (en) * | 2005-05-20 | 2011-11-22 | Intermec Ip Corp | Computerized device for data collection and communication |
US20070018611A1 (en) * | 2005-07-11 | 2007-01-25 | Nokia Corporation | Battery detection interface |
DE102005038926A1 (en) * | 2005-08-17 | 2007-03-22 | BSH Bosch und Siemens Hausgeräte GmbH | Battery operated electromotive kitchen appliance |
US8266348B2 (en) * | 2005-11-08 | 2012-09-11 | American Power Conversion Corporation | System and method of communicating with portable devices |
US8225111B2 (en) * | 2005-12-19 | 2012-07-17 | Power Integrations, Inc. | Method and apparatus to authenticate a power supply |
US7848527B2 (en) | 2006-02-27 | 2010-12-07 | Apple Inc. | Dynamic power management in a portable media delivery system |
US7770036B2 (en) * | 2006-02-27 | 2010-08-03 | Apple Inc. | Power management in a portable media delivery system |
US7595608B2 (en) * | 2006-03-10 | 2009-09-29 | Atmel Corporation | Gate driver for a battery pack |
JP4618561B2 (en) * | 2006-04-28 | 2011-01-26 | 日立工機株式会社 | Battery charger |
US20070260892A1 (en) * | 2006-05-08 | 2007-11-08 | Paul Christopher R | System and method for authenticating a power source |
US7498766B2 (en) * | 2006-05-30 | 2009-03-03 | Symbol Technologies, Inc. | System and method for authenticating a battery |
US20070285055A1 (en) * | 2006-06-07 | 2007-12-13 | Meyer Gary D | Battery pack |
US8001400B2 (en) * | 2006-12-01 | 2011-08-16 | Apple Inc. | Power consumption management for functional preservation in a battery-powered electronic device |
US7826525B2 (en) * | 2007-02-16 | 2010-11-02 | Illinois Tool Works, Inc. | Pulse-based communication for devices connected to a bus |
JP2008228389A (en) * | 2007-03-09 | 2008-09-25 | Yamaha Motor Electronics Co Ltd | Battery charging method of electric golf car |
US20080237060A1 (en) * | 2007-03-27 | 2008-10-02 | Hegel Rudolph R | Methods and apparatus for electrolytic treatment of water |
US8390244B2 (en) * | 2007-03-30 | 2013-03-05 | Nipro Healthcare Systems, Llc | Rechargeable battery backup apparatus and method for insulin pump |
FR2916099B1 (en) * | 2007-05-11 | 2009-07-31 | Commissariat Energie Atomique | METHOD FOR CHARGING A BATTERY OF AN AUTONOMOUS SYSTEM |
WO2009003083A1 (en) * | 2007-06-26 | 2008-12-31 | The Coleman Company, Inc. | Electrical appliance that utilizes multiple power sources |
US20090009475A1 (en) * | 2007-07-06 | 2009-01-08 | Ocz Technology Group, Inc. | Wireless computer mouse with battery switching capability |
US8358108B2 (en) * | 2007-09-05 | 2013-01-22 | Black & Decker Inc. | System and method for re-initiating charge cycle for battery pack left in a charger |
US20090079390A1 (en) * | 2007-09-26 | 2009-03-26 | Kai-Wai Alexander Choi | Rechargeable battery array |
US9071073B2 (en) * | 2007-10-04 | 2015-06-30 | The Gillette Company | Household device continuous battery charger utilizing a constant voltage regulator |
US8212517B2 (en) * | 2008-01-07 | 2012-07-03 | Google Inc. | Battery type sensing method and device for sensing battery type |
US8716980B2 (en) * | 2009-02-04 | 2014-05-06 | Samsung Sdi Co., Ltd. | Charge and discharge system of secondary battery and method of controlling charge and discharge of secondary battery |
EP2224575B1 (en) * | 2009-02-26 | 2016-08-24 | BlackBerry Limited | Method and apparatus for dynamic battery management control in a mobile communication device |
US8200292B2 (en) * | 2009-02-26 | 2012-06-12 | Research In Motion Limited | Method and apparatus for dynamic battery management control in a mobile communication device |
KR102033306B1 (en) | 2009-07-13 | 2019-10-17 | 코닌클리케 필립스 엔.브이. | Inductive power transfer |
US20110316545A1 (en) * | 2010-06-29 | 2011-12-29 | Rylan Ian Grant | Electronic Detection of Signatures |
TWM402554U (en) * | 2010-11-10 | 2011-04-21 | Richtek Technology Corp | Charger circuit |
US9118240B2 (en) | 2011-08-31 | 2015-08-25 | Comarco Wireless Technologies, Inc. | Power supply equipment providing multiple identification signals |
US9214823B1 (en) * | 2011-12-20 | 2015-12-15 | Sprint Spectrum L.P. | Correlating operational states and battery usage of devices to extend battery duration |
US20130231894A1 (en) * | 2012-03-01 | 2013-09-05 | Nokia Corporation | Method and apparatus for providing battery information |
US9419457B2 (en) | 2012-09-04 | 2016-08-16 | Google Technology Holdings LLC | Method and device with enhanced battery capacity savings |
US9356461B2 (en) * | 2012-09-25 | 2016-05-31 | Google Technology Holdings, LLC | Methods and systems for rapid wireless charging where the low state of charge (SOC) temperature dependent charging current and low SOC temperature limit are higher than the high SOC temperature dependent charging current and high SOC temperature limit |
US9271063B2 (en) | 2013-02-06 | 2016-02-23 | Zeikos Inc. | Power transferring headphones |
US9276539B2 (en) | 2013-02-06 | 2016-03-01 | Zeikos Inc. | Power transferring headphones |
US20140219465A1 (en) | 2013-02-06 | 2014-08-07 | Zeikos Inc. | Power transferring headphones |
US9491706B2 (en) | 2013-03-13 | 2016-11-08 | Google Technology Holdings LLC | Reduced-power transmitting from a communications device |
US9130381B2 (en) * | 2013-08-05 | 2015-09-08 | O2Micro Inc. | Systems and methods for identifying and monitoring a battery charger |
KR101854218B1 (en) | 2013-10-22 | 2018-05-03 | 삼성에스디아이 주식회사 | Battery pack, energy storage system, and method of charging the battery pack |
US9596653B2 (en) | 2013-12-16 | 2017-03-14 | Google Technology Holdings LLC | Remedying power drain via a coverage map |
WO2015112153A1 (en) * | 2014-01-24 | 2015-07-30 | Volvo Truck Corporation | Engine electronic control unit battery charge controller |
US9865897B2 (en) | 2014-06-02 | 2018-01-09 | Google Llc | Stacked electrochemical cell with increased energy density |
DE112015002653T5 (en) | 2014-06-03 | 2017-03-09 | Traxxas Lp | Battery connection method and associated device |
US10431992B2 (en) | 2014-06-03 | 2019-10-01 | Traxxas Lp | Battery charger with user interface |
US10396568B2 (en) | 2014-06-03 | 2019-08-27 | Traxxas Lp | Battery charger with user interface |
US9438293B2 (en) | 2014-08-05 | 2016-09-06 | Google Technology Holdings LLC | Tunable circuit elements for dynamic, per element power |
US9472965B2 (en) | 2014-09-08 | 2016-10-18 | Google Technology Holdings LLC | Battery cycle life through smart overnight charging |
US9946677B2 (en) | 2015-02-12 | 2018-04-17 | Atmel Corporation | Managing single-wire communications |
US10353845B2 (en) | 2015-02-12 | 2019-07-16 | Atmel Corporation | Adaptive speed single-wire communications |
KR102381085B1 (en) | 2015-02-27 | 2022-04-01 | 삼성전자주식회사 | Dc-dc converter, charging integrated circuit and electronic device having the same and battery charging method thereof |
WO2018191390A1 (en) * | 2017-04-13 | 2018-10-18 | Scott Technologies Inc. | Intrinsically safe battery |
CN109742460B (en) * | 2018-12-28 | 2022-03-29 | 上汽通用五菱汽车股份有限公司 | Management control method and device for portable battery and computer readable storage medium |
CN111044811A (en) * | 2019-11-22 | 2020-04-21 | 泉州市纳德信息科技有限公司 | Interphone base charging test method |
US11892956B2 (en) | 2019-12-31 | 2024-02-06 | Micron Technology, Inc. | Performance of memory system background operations |
Citations (99)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3667026A (en) * | 1970-12-02 | 1972-05-30 | Motorola Inc | Automatic temperature responsive battery charging circuit |
US3816807A (en) * | 1973-07-18 | 1974-06-11 | Gen Electric | Impedance controlled battery charger and method of charging with monitoring of a.c. answer signal |
US3872457A (en) * | 1972-07-31 | 1975-03-18 | Said Ray By Said King | Battery monitor |
US3890556A (en) * | 1972-10-14 | 1975-06-17 | Westinghouse Brake & Signal | Battery chargers |
US3895284A (en) * | 1973-07-04 | 1975-07-15 | Vdo Schindling | Apparatus for determining the state of charge of storage batteries |
US3947743A (en) * | 1973-04-13 | 1976-03-30 | Mabuchi Motor Co. Ltd. | Electric charger |
US4006396A (en) * | 1974-01-18 | 1977-02-01 | Motorola, Inc. | Universal battery charging apparatus |
US4006397A (en) * | 1972-11-01 | 1977-02-01 | General Electric Company | Controlled battery charger system |
US4091320A (en) * | 1975-02-25 | 1978-05-23 | Chloride Group Limited | Automatic electric battery charging apparatus |
US4153867A (en) * | 1976-11-16 | 1979-05-08 | Akkumulatoren-Fabrik Dr. Leopold Jungfer | Device for determining the charge condition for a secondary electric storage battery |
US4207513A (en) * | 1978-02-10 | 1980-06-10 | Power Control Corporation | Automatic battery charger |
US4209736A (en) * | 1978-07-27 | 1980-06-24 | General Electric Company | Condition responsive battery charging circuit |
US4315364A (en) * | 1978-08-03 | 1982-02-16 | General Electric Company | Method for fabricating a rechargeable electrical cell pack having over-current protection |
US4320333A (en) * | 1979-09-17 | 1982-03-16 | Hase A M | Battery charger and surveillance system |
US4329406A (en) * | 1981-03-27 | 1982-05-11 | Dahl Ernest A | Specific gravity transducer and battery performance indicator |
US4370606A (en) * | 1979-10-13 | 1983-01-25 | Matsushita Electric Works, Ltd. | Charging apparatus |
US4385269A (en) * | 1981-01-09 | 1983-05-24 | Redifon Telecommunications Limited | Battery charger |
US4387334A (en) * | 1981-06-05 | 1983-06-07 | Rockwell International Corporation | Battery monitor circuit |
US4388582A (en) * | 1978-05-31 | 1983-06-14 | Black & Decker Inc. | Apparatus and method for charging batteries |
US4390841A (en) * | 1980-10-14 | 1983-06-28 | Purdue Research Foundation | Monitoring apparatus and method for battery power supply |
US4392101A (en) * | 1978-05-31 | 1983-07-05 | Black & Decker Inc. | Method of charging batteries and apparatus therefor |
US4433294A (en) * | 1981-06-05 | 1984-02-21 | Firing Circuits, Inc. | Method and apparatus for testing a battery |
US4455523A (en) * | 1982-06-07 | 1984-06-19 | Norand Corporation | Portable battery powered system |
US4525055A (en) * | 1983-07-15 | 1985-06-25 | Fuji Photo Film Co., Ltd. | Photographic camera having battery remaining life indicating means |
US4530034A (en) * | 1982-11-26 | 1985-07-16 | Olympus Optical Company Ltd. | Battery containment apparatus for electronic flash |
US4564798A (en) * | 1982-10-06 | 1986-01-14 | Escutcheon Associates | Battery performance control |
US4576880A (en) * | 1984-04-06 | 1986-03-18 | Black & Decker Inc. | Battery pack |
US4583034A (en) * | 1984-07-13 | 1986-04-15 | Martin Robert L | Computer programmed battery charge control system |
US4593409A (en) * | 1984-04-04 | 1986-06-03 | Motorola, Inc. | Transceiver protection arrangement |
US4598243A (en) * | 1983-12-06 | 1986-07-01 | Fuji Photo Film Co., Ltd. | Direct-current power supply with alarm indicator |
US4637965A (en) * | 1985-11-22 | 1987-01-20 | H. Milton Keathley | Anticorrosion battery terminal |
US4638237A (en) * | 1985-01-03 | 1987-01-20 | Pulse Electronics, Inc. | Battery condition indicator |
US4639655A (en) * | 1984-04-19 | 1987-01-27 | Westhaver Lawrence A | Method and apparatus for battery charging |
US4658199A (en) * | 1984-11-14 | 1987-04-14 | Solid State Charger Research And Development | Current regulating circuit |
US4659994A (en) * | 1985-08-12 | 1987-04-21 | The United States Of America As Represented By The Secretary Of The Navy | Battery tester |
US4670703A (en) * | 1985-05-06 | 1987-06-02 | General Electric Company | Battery charger with three different charging rates |
US4677363A (en) * | 1984-06-30 | 1987-06-30 | Udo Kopmann | Method of and apparatus for monitoring the state of charge of a rechargeable battery |
US4724528A (en) * | 1984-05-08 | 1988-02-09 | Hewlett-Packard Company | Battery charge level monitor in a computer system |
US4737420A (en) * | 1985-08-13 | 1988-04-12 | Nippon Kogaku K. K. | Device for accommodating various sizes of dry cells therein |
US4737702A (en) * | 1982-06-07 | 1988-04-12 | Norand Corporation | Battery charging control system particularly for hand held device |
US4745349A (en) * | 1986-10-16 | 1988-05-17 | Allied Corporation | Apparatus and method for charging and testing batteries |
US4746852A (en) * | 1984-10-29 | 1988-05-24 | Christie Electric Corp. | Controller for battery charger |
US4746854A (en) * | 1986-10-29 | 1988-05-24 | Span, Inc. | Battery charging system with microprocessor control of voltage and current monitoring and control operations |
US4755733A (en) * | 1987-02-03 | 1988-07-05 | Irsst Institut De Recherche En Sante Et En Securite Du Travail Du Quebec | Battery charging and cycling devices |
US4806840A (en) * | 1983-12-30 | 1989-02-21 | Alexander Manufacturing Company | Method and apparatus for charging a nickel-cadmium battery |
US4823086A (en) * | 1986-12-23 | 1989-04-18 | Whitmire Warren T | Battery monitoring and condition indicator system for multi-battery pack |
US4829225A (en) * | 1985-10-23 | 1989-05-09 | Electronic Power Devices, Corp. | Rapid battery charger, discharger and conditioner |
US4833459A (en) * | 1987-01-27 | 1989-05-23 | Wolfgang Geuer | Circuit arrangement for continually monitoring the quality of a multicell battery |
US4843299A (en) * | 1987-06-01 | 1989-06-27 | Power-Tech Systems Corporation | Universal battery charging system and a method |
US4845419A (en) * | 1985-11-12 | 1989-07-04 | Norand Corporation | Automatic control means providing a low-power responsive signal, particularly for initiating data preservation operation |
US4849682A (en) * | 1987-10-30 | 1989-07-18 | Anton/Bauer, Inc. | Battery charging system |
US4914393A (en) * | 1987-08-27 | 1990-04-03 | Nec Corporation | Accurately indicating a status of consumption of a battery by which an electronic circuit is controllably put into operation |
US4918368A (en) * | 1986-10-29 | 1990-04-17 | Span, Inc. | System for charging batteries and measuring capacities and efficiencies thereof |
US4929931A (en) * | 1988-12-22 | 1990-05-29 | Honeywell Inc. | Battery monitor |
US4937528A (en) * | 1988-10-14 | 1990-06-26 | Allied-Signal Inc. | Method for monitoring automotive battery status |
US4943498A (en) * | 1988-08-25 | 1990-07-24 | Hugh Steeper Limited | Battery and battery receptacle arrangement |
US4945217A (en) * | 1989-05-15 | 1990-07-31 | Dallas Semiconductor Corporation | Hand-held wand for reading electronic tokens |
US4982371A (en) * | 1989-05-15 | 1991-01-01 | Dallas Semiconductor Corporation | Compact electronic module having a RAM device |
US4983820A (en) * | 1989-05-15 | 1991-01-08 | Dallas Semiconductor Corporation | Interface for receiving electronic tokens |
US4995004A (en) * | 1989-05-15 | 1991-02-19 | Dallas Semiconductor Corporation | RAM/ROM hybrid memory architecture |
US4997731A (en) * | 1988-02-24 | 1991-03-05 | Sanyo Electric Co., Ltd. | Packed battery and method of making the same |
US4998057A (en) * | 1988-01-14 | 1991-03-05 | Hitachi Koki Co., Ltd. | Method and apparatus for charging a battery |
US5012176A (en) * | 1990-04-03 | 1991-04-30 | Baxter International, Inc. | Apparatus and method for calorimetrically determining battery charge state |
US5032825A (en) * | 1990-03-02 | 1991-07-16 | Motorola, Inc. | Battery capacity indicator |
US5111128A (en) * | 1990-12-17 | 1992-05-05 | Motorola, Inc. | Battery identification apparatus |
US5115182A (en) * | 1990-04-23 | 1992-05-19 | Motorola, Inc. | Battery charging controller for a battery powered device and method for using the same |
US5130659A (en) * | 1990-08-21 | 1992-07-14 | Sloan Jeffrey M | Battery Monitor |
US5183714A (en) * | 1990-10-09 | 1993-02-02 | Sony Corporation | Battery casing |
US5206097A (en) * | 1991-06-05 | 1993-04-27 | Motorola, Inc. | Battery package having a communication window |
US5208116A (en) * | 1991-12-31 | 1993-05-04 | Samsung Electronics Co., Ltd. | Battery locking apparatus for portable personal computer |
US5227262A (en) * | 1992-07-08 | 1993-07-13 | Yaacov Ozer | Universal camcorder battery pack |
US5229704A (en) * | 1987-05-06 | 1993-07-20 | Knepper Hans Reinhard | Current supply arrangement |
US5284719A (en) * | 1992-07-08 | 1994-02-08 | Benchmarq Microelectronics, Inc. | Method and apparatus for monitoring battery capacity |
US5298346A (en) * | 1992-07-27 | 1994-03-29 | Motorola, Inc. | Battery identification system |
US5315228A (en) * | 1992-01-24 | 1994-05-24 | Compaq Computer Corp. | Battery charge monitor and fuel gauge |
US5321627A (en) * | 1992-03-11 | 1994-06-14 | Globe-Union, Inc. | Battery monitor and method for providing operating parameters |
US5325041A (en) * | 1991-08-09 | 1994-06-28 | Briggs James B | Automatic rechargeable battery monitoring system |
US5331268A (en) * | 1993-08-02 | 1994-07-19 | Motorola, Inc. | Method and apparatus for dynamically charging a battery |
US5332957A (en) * | 1992-08-31 | 1994-07-26 | Motorola, Inc. | Battery module and charger |
US5381096A (en) * | 1992-04-09 | 1995-01-10 | Hirzel; Edgar A. | Method and apparatus for measuring the state-of-charge of a battery system |
US5399446A (en) * | 1992-06-30 | 1995-03-21 | Sony Corporation | Battery cartridge having a terminal for transferring information therefrom |
US5411816A (en) * | 1992-07-02 | 1995-05-02 | Motorola, Inc. | Method and apparatus for determining battery characteristics |
US5420493A (en) * | 1992-06-30 | 1995-05-30 | Apple Computer, Inc. | Power supply and battery charger |
US5432429A (en) * | 1990-10-23 | 1995-07-11 | Benchmarq Microelectronics, Inc. | System for charging/monitoring batteries for a microprocessor based system |
US5434495A (en) * | 1989-03-31 | 1995-07-18 | Mitsubishi Denki Kabushiki Kaisha | Cognition device for battery residual capacity |
US5481730A (en) * | 1992-01-24 | 1996-01-02 | Compaq Computer Corp. | Monitoring and control of power supply functions using a microcontroller |
US5485073A (en) * | 1989-12-28 | 1996-01-16 | Kabushiki Kaisha Toshiba | Personal computer for performing charge and switching control of different types of battery packs |
US5488284A (en) * | 1992-09-30 | 1996-01-30 | Dallas Semiconductor Corporation | Battery charger systems and methods |
US5495503A (en) * | 1992-04-16 | 1996-02-27 | Hobart Brothers Company | Storage battery memory and communication device |
US5510690A (en) * | 1992-08-31 | 1996-04-23 | Kabushiki Kaisha Toshiba | Battery pack, battery discrimination control apparatus and method therefor |
US5534765A (en) * | 1993-03-05 | 1996-07-09 | Motorola, Inc. | Battery with memory for storing charge procedure |
US5541489A (en) * | 1994-12-15 | 1996-07-30 | Intel Corporation | Smart battery power availability feature based on battery-specific characteristics |
US5600247A (en) * | 1992-07-08 | 1997-02-04 | Benchmarq Microelectronics | Dynamically balanced fully differential circuit for use with a battery monitoring circuit |
US5600230A (en) * | 1994-12-15 | 1997-02-04 | Intel Corporation | Smart battery providing programmable remaining capacity and run-time alarms based on battery-specific characteristics |
US5627449A (en) * | 1993-08-30 | 1997-05-06 | Yaesu Musen Co., Ltd. | Electronic device, battery pack and charger for the battery pack |
US5767659A (en) * | 1991-10-30 | 1998-06-16 | Texas Instruments Incorporated | Batteries and battery systems |
US5864222A (en) * | 1989-12-11 | 1999-01-26 | Canon Kabushiki Kaisha | Charging apparatus |
US5867006A (en) * | 1992-10-07 | 1999-02-02 | Dallas Semiconductor Corporation | Battery charger |
US6057383A (en) * | 1996-06-18 | 2000-05-02 | Ivoclar Ag | Dental material based on polymerizable waxes |
Family Cites Families (73)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US124739A (en) * | 1872-03-19 | Improvement in snow-plows | ||
US74444A (en) * | 1868-02-11 | stover | ||
US2225460A (en) | 1936-02-04 | 1940-12-17 | Burgess Battery Co | Battery |
SE358519B (en) | 1968-05-27 | 1973-07-30 | Macharg J A | |
CH515644A (en) | 1968-10-15 | 1971-11-15 | Accumulateurs Fixes | Device for charging an accumulator battery comprising means for controlling the charging rate sensitive to temperature |
US3617850A (en) | 1968-12-09 | 1971-11-02 | North American Rockwell | Battery-status device |
US3617851A (en) | 1969-09-29 | 1971-11-02 | Christie Electric Corp | Battery charger with control circuit for cyclical charge and discharge as a function of battery voltage during discharge |
US3778702A (en) | 1971-07-13 | 1973-12-11 | Curtis Instr | Operating time remaining computer |
US3917990A (en) | 1974-04-11 | 1975-11-04 | Gen Electric | Battery charging control using temperature differential circuit |
US4052656A (en) | 1974-04-22 | 1977-10-04 | Maurice Lavell | Battery charging system |
FR2326052A1 (en) | 1975-09-26 | 1977-04-22 | Accumulateurs Fixes | CHARGING METHOD AND DEVICE FOR ACCUMULATOR BATTERIES |
US4016473A (en) | 1975-11-06 | 1977-04-05 | Utah Research & Development Co., Inc. | DC powered capacitive pulse charge and pulse discharge battery charger |
SE400427B (en) | 1977-02-17 | 1978-03-20 | Ericsson Telefon Ab L M | PROCEDURE FOR CHARGING AND MONITORING A BATTERY, AND DEVICE FOR PERFORMING THE PROCEDURE |
US4180770A (en) | 1978-03-01 | 1979-12-25 | Anderson Power Products, Inc. | Method and apparatus for determining the capacity of lead acid storage batteries |
US4123598A (en) | 1978-04-24 | 1978-10-31 | The Gates Rubber Company | Battery pack and container |
JPS5558739A (en) * | 1978-10-24 | 1980-05-01 | Nippon Denso Co | Method of and device for controlling voltage of automotive generator |
US4236084A (en) | 1978-10-26 | 1980-11-25 | Gingras Richard P | Apparatus and method for in-line energization and de-energization of external loads in series with an external source of electricity in response to externally sensed parameters |
FR2443686A1 (en) | 1978-12-07 | 1980-07-04 | Accumulateurs Fixes | METHOD AND DEVICE FOR MONITORING THE STATE OF CHARGE OF A BATTERY |
US4229687A (en) * | 1979-05-07 | 1980-10-21 | Utah Research & Development Corporation | Temperature maintained battery system |
JPS5628476A (en) * | 1979-08-14 | 1981-03-20 | Shin Kobe Electric Mach Co Ltd | Remained capacity meter for storage battery |
US4289836A (en) * | 1980-03-05 | 1981-09-15 | Lemelson Jerome H | Rechargeable electric battery system |
US4333149A (en) * | 1980-03-06 | 1982-06-01 | General Electric Company | Microprocessor-based state of charge gauge for secondary batteries |
FR2483713A1 (en) | 1980-05-30 | 1981-12-04 | Cii Honeywell Bull | DEVICE FOR TRANSMITTING SIGNALS BETWEEN TWO INFORMATION PROCESSING STATIONS |
US4352067A (en) | 1980-06-02 | 1982-09-28 | Dc Electronic Industries, Inc. | Battery analyzer |
US4418310A (en) | 1981-11-18 | 1983-11-29 | Hobart Brothers Company | Battery charger control circuit |
US4885523A (en) * | 1988-03-15 | 1989-12-05 | Norand Corporation | Battery conditioning system having communication with battery parameter memory means in conjunction with battery conditioning |
US5278487A (en) * | 1988-03-15 | 1994-01-11 | Norand Corporation | Battery conditioning system having communication with battery parameter memory means in conjunction with battery conditioning |
US4716354A (en) | 1985-11-12 | 1987-12-29 | Norand Corporation | Automatic voltage regulator means providing a dual low power responsive and output-voltage-controlling regulator signal particularly for a plural source battery powered system |
US5463305A (en) * | 1982-06-07 | 1995-10-31 | Norand Corporation | Fast battery charging system and method |
US4709202A (en) * | 1982-06-07 | 1987-11-24 | Norand Corporation | Battery powered system |
US4553081A (en) * | 1982-06-07 | 1985-11-12 | Norand Corporation | Portable battery powered system |
US4433277A (en) * | 1982-06-21 | 1984-02-21 | Rockwell International Corporation | Battery charging system |
US4554500A (en) | 1983-03-31 | 1985-11-19 | Anton/Bauer, Inc. | Battery charging apparatus and method |
US4595880A (en) * | 1983-08-08 | 1986-06-17 | Ford Motor Company | Battery state of charge gauge |
US4725784A (en) * | 1983-09-16 | 1988-02-16 | Ramot University Authority For Applied Research & Industrial Development Ltd. | Method and apparatus for determining the state-of-charge of batteries particularly lithium batteries |
FR2562723B1 (en) | 1984-04-06 | 1986-08-22 | Black & Decker Inc | IMPROVED DEVICE FOR CHARGING AN ELECTRIC BATTERY ASSEMBLY |
US4633418A (en) | 1984-07-11 | 1986-12-30 | The United States Of America As Represented By The Secretary Of The Air Force | Battery control and fault detection method |
US4628243A (en) | 1984-10-11 | 1986-12-09 | General Electric Company | Battery charging system having means for distinguishing between primary and secondary batteries |
US4656994A (en) * | 1984-12-31 | 1987-04-14 | Jenks Charles C | Bowstring release device and adjustable bow sight |
FR2586482B1 (en) * | 1985-08-23 | 1988-02-19 | Abiven Jacques | DEVICE FOR MONITORING A BATTERY |
GB8528472D0 (en) | 1985-11-19 | 1985-12-24 | British Aerospace | Battery state of charge indicator |
NL8601243A (en) | 1986-05-15 | 1987-12-01 | Philips Nv | DEVICE FOR DISPLAYING THE CHARGING STATE OF A BATTERY. |
US4710694A (en) | 1986-06-02 | 1987-12-01 | Acme Electric Corporation | Microprocessor controlled battery charger |
US4743831A (en) * | 1986-09-12 | 1988-05-10 | Troxler Electronic Laboratories, Inc. | Apparatus and method for indicating remaining battery life in a battery powered device |
US4820965A (en) * | 1987-03-23 | 1989-04-11 | Maurice A. Sween | Control circuit for battery charger |
JPH01143984A (en) | 1987-11-30 | 1989-06-06 | Aisin Aw Co Ltd | Device for monitoring battery state |
US4871956A (en) | 1988-02-18 | 1989-10-03 | Power Conversion Inc. | Method and apparatus for cell monitoring and control |
US4965738A (en) * | 1988-05-03 | 1990-10-23 | Anton/Bauer, Inc. | Intelligent battery system |
KR900702616A (en) * | 1988-09-30 | 1990-12-07 | 빈센트 죠셉 로너 | Battery and Battery Charging System |
US5013992A (en) * | 1988-10-12 | 1991-05-07 | E-Z-Go Division Of Textron | Microprocessor controlled battery charger |
JPH088748B2 (en) * | 1988-11-11 | 1996-01-29 | 三洋電機株式会社 | Full charge detection circuit |
US4876513A (en) | 1988-12-05 | 1989-10-24 | Globe-Union Inc. | Dynamic state-of-charge indicator for a battery and method thereof |
US5193067A (en) * | 1988-12-05 | 1993-03-09 | Nippondenso Co., Ltd. | Battery condition detecton apparatus |
US4948954A (en) | 1989-05-15 | 1990-08-14 | Dallas Semiconductor Corporation | Interface for receiving electronic tokens |
US5027294A (en) * | 1989-01-27 | 1991-06-25 | Zenith Data Systems Corporation | Method and apparatus for battery-power management using load-compensation monitoring of battery discharge |
US5164652A (en) * | 1989-04-21 | 1992-11-17 | Motorola, Inc. | Method and apparatus for determining battery type and modifying operating characteristics |
US5287286A (en) * | 1989-07-31 | 1994-02-15 | Kabushiki Kaisha Toshiba | Low-battery state detecting system and method for detecting the residual capacity of a battery from the variation in battery voltage |
KR930008260B1 (en) * | 1989-09-29 | 1993-08-27 | 가부시기가이샤 도시바 | Intellegent power system for portable computer |
US5196779A (en) * | 1989-11-16 | 1993-03-23 | Alexander Manufacturing Company | Battery maintenance system |
CA2022802A1 (en) * | 1989-12-05 | 1991-06-06 | Steven E. Koenck | Fast battery charging system and method |
US5185566A (en) * | 1990-05-04 | 1993-02-09 | Motorola, Inc. | Method and apparatus for detecting the state of charge of a battery |
US5121047A (en) * | 1990-06-01 | 1992-06-09 | Motorola, Inc. | Battery charging system |
US5198743A (en) * | 1990-12-11 | 1993-03-30 | Span, Inc. | Battery charger with microprocessor control |
CA2038160C (en) * | 1991-03-13 | 1996-10-22 | Jiri K. Nor | Charging circuits for rechargeable batteries and cells |
US5590058A (en) * | 1991-04-29 | 1996-12-31 | Trw Inc. | Battery monitor for unobstrusive installation with a battery connector |
US5254928A (en) * | 1991-10-01 | 1993-10-19 | Apple Computer, Inc. | Power management system for battery powered computers |
US5200686A (en) * | 1991-10-10 | 1993-04-06 | Motorola, Inc. | Method and apparatus for determining battery type |
US5200689A (en) * | 1992-01-24 | 1993-04-06 | Compaq Computer Corporation | Battery charge monitor to determine fast charge termination |
US5283511A (en) * | 1992-06-08 | 1994-02-01 | Thomas Keener | Rechargeable battery manager |
US5357203A (en) * | 1992-07-08 | 1994-10-18 | Benchmarq Microelectronics, Inc. | Battery monitoring circuit for operating with high battery discharge rates |
US5440221A (en) * | 1992-07-08 | 1995-08-08 | Benchmarg Microelectronics, Inc. | Method and apparatus for monitoring batttery capacity with charge control |
GB2270983B (en) * | 1992-09-29 | 1996-04-10 | Nokia Mobile Phones Ltd | Battery identification |
US5371453A (en) * | 1993-01-28 | 1994-12-06 | Motorola, Inc. | Battery charger system with common charge and data exchange port |
-
1992
- 1992-10-07 US US07/957,571 patent/US5592069A/en not_active Expired - Lifetime
-
1996
- 1996-12-12 US US08/764,285 patent/US5694024A/en not_active Expired - Lifetime
-
1997
- 1997-07-28 US US08/901,068 patent/US5867006A/en not_active Expired - Lifetime
-
1998
- 1998-10-26 US US09/178,675 patent/US6018228A/en not_active Expired - Lifetime
-
2001
- 2001-10-09 US US09/973,155 patent/US20020117993A1/en not_active Abandoned
-
2003
- 2003-01-21 US US10/348,584 patent/US6969970B2/en not_active Expired - Fee Related
-
2005
- 2005-03-07 US US11/074,125 patent/US20050151505A1/en not_active Abandoned
Patent Citations (99)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3667026A (en) * | 1970-12-02 | 1972-05-30 | Motorola Inc | Automatic temperature responsive battery charging circuit |
US3872457A (en) * | 1972-07-31 | 1975-03-18 | Said Ray By Said King | Battery monitor |
US3890556A (en) * | 1972-10-14 | 1975-06-17 | Westinghouse Brake & Signal | Battery chargers |
US4006397A (en) * | 1972-11-01 | 1977-02-01 | General Electric Company | Controlled battery charger system |
US3947743A (en) * | 1973-04-13 | 1976-03-30 | Mabuchi Motor Co. Ltd. | Electric charger |
US3895284A (en) * | 1973-07-04 | 1975-07-15 | Vdo Schindling | Apparatus for determining the state of charge of storage batteries |
US3816807A (en) * | 1973-07-18 | 1974-06-11 | Gen Electric | Impedance controlled battery charger and method of charging with monitoring of a.c. answer signal |
US4006396A (en) * | 1974-01-18 | 1977-02-01 | Motorola, Inc. | Universal battery charging apparatus |
US4091320A (en) * | 1975-02-25 | 1978-05-23 | Chloride Group Limited | Automatic electric battery charging apparatus |
US4153867A (en) * | 1976-11-16 | 1979-05-08 | Akkumulatoren-Fabrik Dr. Leopold Jungfer | Device for determining the charge condition for a secondary electric storage battery |
US4207513A (en) * | 1978-02-10 | 1980-06-10 | Power Control Corporation | Automatic battery charger |
US4388582A (en) * | 1978-05-31 | 1983-06-14 | Black & Decker Inc. | Apparatus and method for charging batteries |
US4392101A (en) * | 1978-05-31 | 1983-07-05 | Black & Decker Inc. | Method of charging batteries and apparatus therefor |
US4209736A (en) * | 1978-07-27 | 1980-06-24 | General Electric Company | Condition responsive battery charging circuit |
US4315364A (en) * | 1978-08-03 | 1982-02-16 | General Electric Company | Method for fabricating a rechargeable electrical cell pack having over-current protection |
US4320333A (en) * | 1979-09-17 | 1982-03-16 | Hase A M | Battery charger and surveillance system |
US4370606A (en) * | 1979-10-13 | 1983-01-25 | Matsushita Electric Works, Ltd. | Charging apparatus |
US4390841A (en) * | 1980-10-14 | 1983-06-28 | Purdue Research Foundation | Monitoring apparatus and method for battery power supply |
US4385269A (en) * | 1981-01-09 | 1983-05-24 | Redifon Telecommunications Limited | Battery charger |
US4329406A (en) * | 1981-03-27 | 1982-05-11 | Dahl Ernest A | Specific gravity transducer and battery performance indicator |
US4433294A (en) * | 1981-06-05 | 1984-02-21 | Firing Circuits, Inc. | Method and apparatus for testing a battery |
US4387334A (en) * | 1981-06-05 | 1983-06-07 | Rockwell International Corporation | Battery monitor circuit |
US4455523A (en) * | 1982-06-07 | 1984-06-19 | Norand Corporation | Portable battery powered system |
US4737702A (en) * | 1982-06-07 | 1988-04-12 | Norand Corporation | Battery charging control system particularly for hand held device |
US4564798A (en) * | 1982-10-06 | 1986-01-14 | Escutcheon Associates | Battery performance control |
US4530034A (en) * | 1982-11-26 | 1985-07-16 | Olympus Optical Company Ltd. | Battery containment apparatus for electronic flash |
US4525055A (en) * | 1983-07-15 | 1985-06-25 | Fuji Photo Film Co., Ltd. | Photographic camera having battery remaining life indicating means |
US4598243A (en) * | 1983-12-06 | 1986-07-01 | Fuji Photo Film Co., Ltd. | Direct-current power supply with alarm indicator |
US4806840A (en) * | 1983-12-30 | 1989-02-21 | Alexander Manufacturing Company | Method and apparatus for charging a nickel-cadmium battery |
US4593409A (en) * | 1984-04-04 | 1986-06-03 | Motorola, Inc. | Transceiver protection arrangement |
US4576880A (en) * | 1984-04-06 | 1986-03-18 | Black & Decker Inc. | Battery pack |
US4639655A (en) * | 1984-04-19 | 1987-01-27 | Westhaver Lawrence A | Method and apparatus for battery charging |
US4724528A (en) * | 1984-05-08 | 1988-02-09 | Hewlett-Packard Company | Battery charge level monitor in a computer system |
US4677363A (en) * | 1984-06-30 | 1987-06-30 | Udo Kopmann | Method of and apparatus for monitoring the state of charge of a rechargeable battery |
US4583034A (en) * | 1984-07-13 | 1986-04-15 | Martin Robert L | Computer programmed battery charge control system |
US4746852A (en) * | 1984-10-29 | 1988-05-24 | Christie Electric Corp. | Controller for battery charger |
US4658199A (en) * | 1984-11-14 | 1987-04-14 | Solid State Charger Research And Development | Current regulating circuit |
US4638237A (en) * | 1985-01-03 | 1987-01-20 | Pulse Electronics, Inc. | Battery condition indicator |
US4670703A (en) * | 1985-05-06 | 1987-06-02 | General Electric Company | Battery charger with three different charging rates |
US4659994A (en) * | 1985-08-12 | 1987-04-21 | The United States Of America As Represented By The Secretary Of The Navy | Battery tester |
US4737420A (en) * | 1985-08-13 | 1988-04-12 | Nippon Kogaku K. K. | Device for accommodating various sizes of dry cells therein |
US4829225A (en) * | 1985-10-23 | 1989-05-09 | Electronic Power Devices, Corp. | Rapid battery charger, discharger and conditioner |
US4845419A (en) * | 1985-11-12 | 1989-07-04 | Norand Corporation | Automatic control means providing a low-power responsive signal, particularly for initiating data preservation operation |
US4637965A (en) * | 1985-11-22 | 1987-01-20 | H. Milton Keathley | Anticorrosion battery terminal |
US4745349A (en) * | 1986-10-16 | 1988-05-17 | Allied Corporation | Apparatus and method for charging and testing batteries |
US4746854A (en) * | 1986-10-29 | 1988-05-24 | Span, Inc. | Battery charging system with microprocessor control of voltage and current monitoring and control operations |
US4918368A (en) * | 1986-10-29 | 1990-04-17 | Span, Inc. | System for charging batteries and measuring capacities and efficiencies thereof |
US4823086A (en) * | 1986-12-23 | 1989-04-18 | Whitmire Warren T | Battery monitoring and condition indicator system for multi-battery pack |
US4833459A (en) * | 1987-01-27 | 1989-05-23 | Wolfgang Geuer | Circuit arrangement for continually monitoring the quality of a multicell battery |
US4755733A (en) * | 1987-02-03 | 1988-07-05 | Irsst Institut De Recherche En Sante Et En Securite Du Travail Du Quebec | Battery charging and cycling devices |
US5229704A (en) * | 1987-05-06 | 1993-07-20 | Knepper Hans Reinhard | Current supply arrangement |
US4843299A (en) * | 1987-06-01 | 1989-06-27 | Power-Tech Systems Corporation | Universal battery charging system and a method |
US4914393A (en) * | 1987-08-27 | 1990-04-03 | Nec Corporation | Accurately indicating a status of consumption of a battery by which an electronic circuit is controllably put into operation |
US4849682A (en) * | 1987-10-30 | 1989-07-18 | Anton/Bauer, Inc. | Battery charging system |
US4998057A (en) * | 1988-01-14 | 1991-03-05 | Hitachi Koki Co., Ltd. | Method and apparatus for charging a battery |
US4997731A (en) * | 1988-02-24 | 1991-03-05 | Sanyo Electric Co., Ltd. | Packed battery and method of making the same |
US4943498A (en) * | 1988-08-25 | 1990-07-24 | Hugh Steeper Limited | Battery and battery receptacle arrangement |
US4937528A (en) * | 1988-10-14 | 1990-06-26 | Allied-Signal Inc. | Method for monitoring automotive battery status |
US4929931A (en) * | 1988-12-22 | 1990-05-29 | Honeywell Inc. | Battery monitor |
US5434495A (en) * | 1989-03-31 | 1995-07-18 | Mitsubishi Denki Kabushiki Kaisha | Cognition device for battery residual capacity |
US4995004A (en) * | 1989-05-15 | 1991-02-19 | Dallas Semiconductor Corporation | RAM/ROM hybrid memory architecture |
US4983820A (en) * | 1989-05-15 | 1991-01-08 | Dallas Semiconductor Corporation | Interface for receiving electronic tokens |
US4982371A (en) * | 1989-05-15 | 1991-01-01 | Dallas Semiconductor Corporation | Compact electronic module having a RAM device |
US4945217A (en) * | 1989-05-15 | 1990-07-31 | Dallas Semiconductor Corporation | Hand-held wand for reading electronic tokens |
US5864222A (en) * | 1989-12-11 | 1999-01-26 | Canon Kabushiki Kaisha | Charging apparatus |
US5485073A (en) * | 1989-12-28 | 1996-01-16 | Kabushiki Kaisha Toshiba | Personal computer for performing charge and switching control of different types of battery packs |
US5032825A (en) * | 1990-03-02 | 1991-07-16 | Motorola, Inc. | Battery capacity indicator |
US5012176A (en) * | 1990-04-03 | 1991-04-30 | Baxter International, Inc. | Apparatus and method for calorimetrically determining battery charge state |
US5115182A (en) * | 1990-04-23 | 1992-05-19 | Motorola, Inc. | Battery charging controller for a battery powered device and method for using the same |
US5130659A (en) * | 1990-08-21 | 1992-07-14 | Sloan Jeffrey M | Battery Monitor |
US5183714A (en) * | 1990-10-09 | 1993-02-02 | Sony Corporation | Battery casing |
US5432429A (en) * | 1990-10-23 | 1995-07-11 | Benchmarq Microelectronics, Inc. | System for charging/monitoring batteries for a microprocessor based system |
US5111128A (en) * | 1990-12-17 | 1992-05-05 | Motorola, Inc. | Battery identification apparatus |
US5206097A (en) * | 1991-06-05 | 1993-04-27 | Motorola, Inc. | Battery package having a communication window |
US5325041A (en) * | 1991-08-09 | 1994-06-28 | Briggs James B | Automatic rechargeable battery monitoring system |
US5767659A (en) * | 1991-10-30 | 1998-06-16 | Texas Instruments Incorporated | Batteries and battery systems |
US5208116A (en) * | 1991-12-31 | 1993-05-04 | Samsung Electronics Co., Ltd. | Battery locking apparatus for portable personal computer |
US5315228A (en) * | 1992-01-24 | 1994-05-24 | Compaq Computer Corp. | Battery charge monitor and fuel gauge |
US5481730A (en) * | 1992-01-24 | 1996-01-02 | Compaq Computer Corp. | Monitoring and control of power supply functions using a microcontroller |
US5321627A (en) * | 1992-03-11 | 1994-06-14 | Globe-Union, Inc. | Battery monitor and method for providing operating parameters |
US5381096A (en) * | 1992-04-09 | 1995-01-10 | Hirzel; Edgar A. | Method and apparatus for measuring the state-of-charge of a battery system |
US5495503A (en) * | 1992-04-16 | 1996-02-27 | Hobart Brothers Company | Storage battery memory and communication device |
US5420493A (en) * | 1992-06-30 | 1995-05-30 | Apple Computer, Inc. | Power supply and battery charger |
US5399446A (en) * | 1992-06-30 | 1995-03-21 | Sony Corporation | Battery cartridge having a terminal for transferring information therefrom |
US5411816A (en) * | 1992-07-02 | 1995-05-02 | Motorola, Inc. | Method and apparatus for determining battery characteristics |
US5600247A (en) * | 1992-07-08 | 1997-02-04 | Benchmarq Microelectronics | Dynamically balanced fully differential circuit for use with a battery monitoring circuit |
US5227262A (en) * | 1992-07-08 | 1993-07-13 | Yaacov Ozer | Universal camcorder battery pack |
US5284719A (en) * | 1992-07-08 | 1994-02-08 | Benchmarq Microelectronics, Inc. | Method and apparatus for monitoring battery capacity |
US5298346A (en) * | 1992-07-27 | 1994-03-29 | Motorola, Inc. | Battery identification system |
US5332957A (en) * | 1992-08-31 | 1994-07-26 | Motorola, Inc. | Battery module and charger |
US5510690A (en) * | 1992-08-31 | 1996-04-23 | Kabushiki Kaisha Toshiba | Battery pack, battery discrimination control apparatus and method therefor |
US5488284A (en) * | 1992-09-30 | 1996-01-30 | Dallas Semiconductor Corporation | Battery charger systems and methods |
US5867006A (en) * | 1992-10-07 | 1999-02-02 | Dallas Semiconductor Corporation | Battery charger |
US5534765A (en) * | 1993-03-05 | 1996-07-09 | Motorola, Inc. | Battery with memory for storing charge procedure |
US5331268A (en) * | 1993-08-02 | 1994-07-19 | Motorola, Inc. | Method and apparatus for dynamically charging a battery |
US5627449A (en) * | 1993-08-30 | 1997-05-06 | Yaesu Musen Co., Ltd. | Electronic device, battery pack and charger for the battery pack |
US5541489A (en) * | 1994-12-15 | 1996-07-30 | Intel Corporation | Smart battery power availability feature based on battery-specific characteristics |
US5600230A (en) * | 1994-12-15 | 1997-02-04 | Intel Corporation | Smart battery providing programmable remaining capacity and run-time alarms based on battery-specific characteristics |
US6057383A (en) * | 1996-06-18 | 2000-05-02 | Ivoclar Ag | Dental material based on polymerizable waxes |
Cited By (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7639927B2 (en) | 2004-09-14 | 2009-12-29 | Marvell World Trade Ltd. | Unified control and memory for a combined DVD/HDD system |
US20060056813A1 (en) * | 2004-09-14 | 2006-03-16 | Marvell International Ltd. | Unified control and memory for a combined DVD/HDD system |
US20060114027A1 (en) * | 2004-11-29 | 2006-06-01 | Sehat Sutardja | Low voltage logic operation using higher voltage supply levels |
US20060114019A1 (en) * | 2004-11-29 | 2006-06-01 | Sehat Sutardja | Low voltage logic operation using higher voltage supply levels |
US20060119391A1 (en) * | 2004-11-29 | 2006-06-08 | Marvell International Ltd. | Low voltage logic operation using higher voltage supply levels |
US7594127B2 (en) | 2004-11-29 | 2009-09-22 | Marvell World Trade Ltd. | Low voltage logic operation using higher voltage supply levels |
US7788509B2 (en) * | 2004-11-29 | 2010-08-31 | Marvell World Trade Ltd. | Low voltage logic operation using higher voltage supply levels |
US7788510B2 (en) | 2004-11-29 | 2010-08-31 | Marvell World Trade Ltd. | Low voltage logic operation using higher voltage supply levels |
US8188706B2 (en) * | 2007-02-16 | 2012-05-29 | Broadcom Corporation | Power management unit with battery detection controller and switchable regulator block |
US20080197707A1 (en) * | 2007-02-16 | 2008-08-21 | Broadcom Corporation | Power management unit with battery detection |
US20090278504A1 (en) * | 2008-05-07 | 2009-11-12 | Fujifilm Corporation | Digital cassette charging apparatus, digital cassette charging system, and digital cassette charging method |
US8183822B2 (en) * | 2008-05-07 | 2012-05-22 | Fujifilm Corporation | Digital cassette charging apparatus, digital cassette charging system, and digital cassette charging method |
US20110133694A1 (en) * | 2009-12-04 | 2011-06-09 | Hyundai Motor Company | Method for controlling charging voltage of 12v auxiliary battery for hybrid vehicle |
US8928272B2 (en) * | 2009-12-04 | 2015-01-06 | Hyundai Motor Company | Method for controlling charging voltage of 12V auxiliary battery for hybrid vehicle |
US10611256B2 (en) | 2009-12-04 | 2020-04-07 | Hyundai Motor Company | Method for controlling charging voltage of 12V auxiliary battery for hybrid vehicle |
US10906408B2 (en) | 2009-12-04 | 2021-02-02 | Hyundai Motor Company | Method for controlling charging voltage of 12V auxiliary battery for hybrid vehicle |
US20150073591A1 (en) * | 2011-01-14 | 2015-03-12 | Siemens Aktiengesellschaft | Charging device for charging a vehicle accumulator |
US20170194798A1 (en) * | 2016-01-05 | 2017-07-06 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Quick charging method, mobile terminal, and power adapter |
US10581262B2 (en) * | 2016-01-05 | 2020-03-03 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Quick charging method, mobile terminal, and power adapter |
US11233416B2 (en) * | 2016-01-05 | 2022-01-25 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Quick charging method based on determination of type of power supply device within preset time period, terminal, and power supply device |
US20220094175A1 (en) * | 2016-01-05 | 2022-03-24 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Quick Charging Method, Mobile Terminal, and Power Adapter |
US11791651B2 (en) * | 2016-01-05 | 2023-10-17 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Quick charging method, mobile terminal, and power adapter |
US11451067B2 (en) * | 2017-12-19 | 2022-09-20 | Intel Corporation | Method, apparatus and system to enhance a device policy manager to manage devices based on battery condition |
Also Published As
Publication number | Publication date |
---|---|
US6969970B2 (en) | 2005-11-29 |
US6018228A (en) | 2000-01-25 |
US20020117993A1 (en) | 2002-08-29 |
US5592069A (en) | 1997-01-07 |
US20030189417A1 (en) | 2003-10-09 |
US5867006A (en) | 1999-02-02 |
US5694024A (en) | 1997-12-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6969970B2 (en) | Method of controlling the charging of a battery | |
US5694021A (en) | System for executing charge control of a secondary battery and detecting the capacitance thereof | |
TW309669B (en) | ||
US5506490A (en) | Method and apparatus for determining external power supply type | |
US5432429A (en) | System for charging/monitoring batteries for a microprocessor based system | |
US5900717A (en) | Rechargeable battery charging circuit | |
EP1681741B1 (en) | Multi-series connection type battery cell pack | |
US6377028B1 (en) | System for charging monitoring batteries for a microprocessor based method | |
JP3766491B2 (en) | Battery powered system | |
TW501004B (en) | Smart battery charging system, charging method therefor and power supply system for portable computer using the same | |
US6097175A (en) | Method for charging and discharging a smart battery of an electronic equipment | |
EP0988684A1 (en) | Multi-functional battery management module operable in a charging mode and a battery pack mode | |
JP2000032677A (en) | Device for determining temperature and identification of battery pack | |
IE901029L (en) | Method and apparatus for determining battery type and¹modifying operating characteristics | |
EP0793862A1 (en) | Smart battery device | |
EP1040547A1 (en) | Method and apparatus for charging a rechargeable battery | |
JPH06315233A (en) | Battery charge control method | |
US20020000789A1 (en) | Charger assembly | |
US6456046B1 (en) | Protection circuit for terminating trickle charge when the battery terminal voltage is greater than a predetermined value | |
US20060091854A1 (en) | Power monitoring and balancing device | |
US5962157A (en) | Intelligent battery device | |
EP0631363B1 (en) | Charging circuit with battery charge monitor circuit | |
US6420853B1 (en) | Battery charger capable of accurately determining fully charged condition regardless of batteries with different charge chracteristics | |
US5912548A (en) | Battery pack monitoring system | |
JP3223539B2 (en) | Quick charger |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |