CN101877280B - Electrolytic capacitor with a heat-quantity reduction structure - Google Patents
Electrolytic capacitor with a heat-quantity reduction structure Download PDFInfo
- Publication number
- CN101877280B CN101877280B CN2010101416834A CN201010141683A CN101877280B CN 101877280 B CN101877280 B CN 101877280B CN 2010101416834 A CN2010101416834 A CN 2010101416834A CN 201010141683 A CN201010141683 A CN 201010141683A CN 101877280 B CN101877280 B CN 101877280B
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- China
- Prior art keywords
- foil
- condenser
- conductor foil
- capacitor
- ground floor
- 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.)
- Expired - Fee Related
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/145—Liquid electrolytic capacitors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/0003—Protection against electric or thermal overload; cooling arrangements; means for avoiding the formation of cathode films
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/08—Housing; Encapsulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/14—Structural combinations or circuits for modifying, or compensating for, electric characteristics of electrolytic capacitors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/42—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual single-phase induction motor
- H02P1/44—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual single-phase induction motor by phase-splitting with a capacitor
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The invention provides an electrolytic starting capacitor, comprising an electrolyte, at least partly uninsulated conductive material conductor foil, at least two separated capacitor foils. The capacitor foils are opposite to the conductor foil. In order to reduce the heat quantity, the capacitor comprises a circuit for providing the conductivity along the direction from the capacitor foil to the conductor foil and the circuit reduces or prevents the conduction along the direction from the conductor foil to the capacitor foil and the opposite direction.
Description
Technical field
The present invention relates to a kind of electrolysis and start capacitor; It comprises housing; This housing comprises electrolyte, the condenser foil of the uninsulated electric conducting material conductor foil of part and at least two separation at least, and each condenser foil comprises the ground floor electric conducting material and the second layer with similar semi-conductive characteristic.Condenser foil is arranged to make the second layer relative with conductor foil.
The invention still further relates to a kind of AC circuit that combines the capacitor of type mentioned above.
Background technology
Electrolytic capacitor is the capacitor of a kind of common capacitance per unit volume greater than other types of capacitors, thereby makes it in the circuit of high relatively electric current and low frequency, using value arranged.The capacitor of type mentioned above is widely used in for example starter motor or drive motors.It should be the coupling capacitor in the circuit of AC conduction but not DC conduction that these capacitors also are widely used as, and big capacitance allows them through low-down frequency.
In the use, electrolyte according to the frequency of the AC power supplies that is connected between condenser foil along the alternating direction conduction current.This causes the capacitor heating, can damage capacitor during worst case.Heat generation limit the permission load of capacitor.
Summary of the invention
In order to protect in order to avoid overheated and possible damage; Therefore improve the capacitor that for example is used to start the AC motor; The present invention provides a kind of capacitor of type mentioned above in first aspect, and this capacitor comprises circuit; This circuit provides first conductivity on the direction of each ground floor from the conductor foil to the condenser foil, and at the rightabout from each ground floor to conductor foil second conductivity that is lower than first conductivity is provided.Wherein, lower conductivity can for example be meant at each ground floor to the conducting path of conductor foil, to have high electrical resistance, perhaps on the direction from each ground floor to conductor foil, does not have conductivity.
According to the present invention; Electric current can be directly transferred to conductor foil through circuit from the ground floor of a condenser foil, so this circuit is walked around (bypass) arrives conductor foil through the second layer of this electric capacity paper tinsel and through electrolyte from the ground floor of this condenser foil conductive path.In other words, the electric charge of the second layer from one of ground floor to relative condenser foil at least in part through said circuit by bypass, thereby reduced the heat that exists in one of electrolyte and second layer.
In this, the regulation that the second layer and conductor foil are relative is meant that the second layer is towards conductor foil.
First conductivity preferably can be higher than the conductivity of electrolyte, and just, the resistance that passes through circuit on the conducting path from conductor foil to each condenser foil can be lower than the resistance through electrolyte valuably.Like this, not only less heat exists in the electrolyte, and is expected to reduce total losses.
Condenser foil can comprise the conductive aluminum foil of coating insulating oxide, perhaps can be made up of the conductive aluminum foil of coating insulating oxide, thereby this insulating oxide constitutes the material that the second layer has characteristic of semiconductor.The insulation isolation scraps of paper (paper-spacer) that are immersed in the electrolyte can be arranged between the second layer and the conductor foil.
Hereinafter uses that to have the quantity order be that the capacitor of two condenser foils and single conductor foil is set forth the present invention as illustration.In the reality, can use any amount of condenser foil and conductor foil, as long as condenser foil is set up at least two different electromotive forces in electrolyte, and conductor foil has the electromotive force that equates basically.
Hereinafter, a condenser foil will be masked as A, and another condenser foil will be masked as B, and from simplifying, conductor foil will be masked as C.During use, paper tinsel A and B can be connected to AC power supplies, thereby alternately have maximum potential.
Depend on the sense of current from AC power supplies, one of condenser foil or another second layer become anode.
Preferably, the surface area of conductor foil can be greater than the surface area of condenser foil, for example on the scope of the total surface area of condenser foil.Special; Conductor foil can have the surface of conducting electricity towards not the insulating of the second layer of each condenser foil; This surface can be enough big, thereby when condenser foil was arranged to row adjacent with conductor foil or matrix, this surface can be directly adjacent with all second layers.
Condenser foil and conductor foil can be flat paper tinsel or non-flat paper tinsel, for example flex foil or be provided with the paper tinsel of the texture that increases surface area.
For example, tantalum can be used as the alternate material of aluminium, and usually, any electric conducting material can be used for the ground floor of conductor foil.Accordingly, the second layer can be processed by any material with characteristic of semiconductor, that is to say, is for example processed by aluminium oxide etc.
Sometimes tantalum is more expensive than aluminium, but tantalum can provide bigger capacitance per unit volume, thereby tantalum especially can be as the alternatives that for example is used for such as space sensitive (space-sensitive) circuit of the small-sized electricity consumption product of mobile phone etc.
The semiconductive characteristic can be provided by the semi-conducting material such as aluminium oxide, is perhaps provided by the alternate material that is used for this purpose as known in the art.The characteristic of semiconductor here is meant that it is different that electric current conducts through the second layer in the opposite direction.In one embodiment, the electric current on direction is basically by blocking-up fully, and electric current can conduct in the opposite direction.
In one embodiment, condenser foil is processed by the foil, etched that comprises aluminum, perhaps comprises the foil, etched that comprises aluminum.
At this, the second layer and conductor foil are meant that relatively the surface faces with each other.
The layer of capacitor can pile up, and for example is stacked in the heap that also comprises the multi-ply paper material, and this heap can be rolled into cylinder.This cylinder can be equipped with connector, and places the cylindrical shell of being processed by for example aluminium etc.
Circuit can be suitable for stoping fully from conductor foil through the electric current of circuit on the direction of condenser foil, perhaps is suitable for limiting at least the electric current that this side up.Especially, this circuit can comprise at least one diode that is used for each condenser foil.In one embodiment; Is adjustable through circuit to the conductivity degree on the direction of conductor foil from capacitor element, perhaps can be for example waits automatically based on the power of AC power supplies supply, based on the electric capacity of capacitor through the conductivity of circuit on the direction of conductor foil from capacitor element and regulates.
Circuit, or especially, each diode of circuit can be arranged in the housing or outside the housing.
As indicated above, capacitor especially can be in order to start the AC motor.For this reason, condenser foil can form size and be in the scope of 20-400 microfarad to impel electric capacity, perhaps more preferably is in the scope of 80-300 microfarad, perhaps is between the 120-200 microfarad.
Paper tinsel be arranged in valuably respect to one another two-layer in; One deck is formed by conductor foil; Another layer is formed by condenser foil, and these condenser foils arrange and embark on journey or matrix, and the surface that makes the surface of the second layer that condenser foil has all conduct electricity with not insulating of conductor foil is relative.
On the one hand, the present invention provides a kind of capacitor of type mentioned above, and this capacitor is connected such as the power device of motor and is suitable for providing between the power supply of alternating current, and condenser foil alternately changes polarity thus.
Second aspect the invention provides a kind of method of protecting electrolysis to start capacitor, and this capacitor comprises:
-electrolyte,
-uninsulated electric conducting material the conductor foil of part at least, and
The condenser foil of-at least two separation, each condenser foil comprise that the ground floor electric conducting material and the second layer have the material of characteristic of semiconductor,
This method comprises: arrange that condenser foil makes the second layer relative with conductor foil; So that electric current can be transmitted to conductor foil from one of ground floor through electrolyte; First conductivity is provided on the direction of each ground floor from the conductor foil to the condenser foil, and second conductivity far above first conductivity is provided at rightabout from each ground floor to conductor foil.
Especially, compare with second conductivity, first conductivity can be reduced to zero, makes electric current only can on a direction of conductor foil, conduct at ground floor.Especially, first and second conductivity can be provided with the diode that the unilateral conduction from each ground floor to conductor foil is provided by conductor and the connection such as normal cable or electric wire.
Description of drawings
Hereinafter will describe in further detail execution mode of the present invention with reference to accompanying drawing, wherein:
Fig. 1 shows the perspective view of the housing with paper tinsel heap of rolling;
Fig. 2 shows the paper tinsel heap of not rolling.
Embodiment
Fig. 1 illustrates the capacitor 1 that comprises housing 2 with perspective view, and housing 2 comprises the volume 3 that is immersed in the electrolyte.Volume 3 is connected to housing 2 apparent terminals 4,5 through lead-in wire.Housing further comprises circuit 6, will describe circuit 6 in further detail with reference to figure 2.
It is the paper tinsel heap of not rolling up 7 that Fig. 2 shows.The paper tinsel heap of the corresponding volume 3 of paper tinsel heap comprises the uninsulated electric conducting material of part (such as aluminium) conductor foil 8 at least, and the condenser foil 9,10 of at least two separation.Condenser foil 9,10 is processed by the foil, etched that comprises aluminum, and condenser foil 9,10 includes conductive material layer and semiconductor material layer.
Each circuit 11,12 comprises diode structure; Allow from conductive material layer (" ground floor " of each condenser foil 9,10 just) through the electric current of circuit 6 through this structure, and stop from conductor foil 8 through this structure and to pass through the electric current of circuit 6 to the rightabout of condenser foil 9,10 to conductor foil 8.
Claims (14)
1. an electrolysis starts capacitor (1), and it comprises housing (2), and this housing (2) comprises:
-electrolyte,
-uninsulated electric conducting material the conductor foil of part (8) at least, and
The condenser foil of-at least two separation (9,10), each condenser foil comprise that the ground floor electric conducting material and the second layer have the material of characteristic of semiconductor,
Condenser foil (9; 10) be arranged to make the second layer and conductor foil (8) relative, wherein, capacitor comprises circuit (11; 12); This circuit (11,12) provides first conductivity on the direction of each ground floor from the conductor foil to the condenser foil, and at the rightabout from each ground floor to conductor foil second conductivity that is higher than first conductivity is provided.
2. capacitor according to claim 1, wherein, circuit (11,12) comprises at least one diode that is used for each condenser foil.
3. capacitor according to claim 2, wherein, diode is arranged on housing (2) outside.
4. capacitor according to claim 1, wherein, condenser foil (9,10) forms size and impels electric capacity to be in the scope of 20-400 microfarad.
5. capacitor according to claim 1, wherein, conductor foil (8) has floating potential in electrolyte.
6. capacitor according to claim 1, wherein, paper tinsel (8; 9,10) be arranged in respect to one another two-layer in, one deck is formed by conductor foil (8); Another layer is formed condenser foil (9 by condenser foil (9,10); 10) layout is embarked on journey or matrix, makes them all have the relatively surperficial of a surface and conductor foil (8).
7. capacitor according to claim 6, wherein, the conductivity from the ground floor to the conductor foil on the direction of (8) is adjustable.
8. capacitor according to claim 6, wherein, the conduction on from conductor foil (8) to the direction of ground floor stops.
9. capacitor according to claim 1, this capacitor is connected to the power supply that is suitable for providing alternating current, thereby the alternating polarity of condenser foil (9,10) changes.
10. circuit, it comprises power supply and each described electrolysis starts capacitor according to any claim 1-9.
11. circuit according to claim 10, wherein, power supply is suitable for providing alternating current.
12. circuit according to claim 10 further comprises the AC motor.
13. a method of protecting electrolysis to start capacitor, this capacitor comprises:
-electrolyte,
-uninsulated electric conducting material the conductor foil of part at least, and
The condenser foil of-at least two separation (9,10), each condenser foil comprise that the ground floor electric conducting material and the second layer have the material of characteristic of semiconductor,
This method comprises: arrange that condenser foil makes the second layer relative with conductor foil; So that electric current can be transmitted to conductor foil from one of ground floor through electrolyte; First conductivity is provided on the direction of each ground floor from the conductor foil to the condenser foil, and second conductivity that is higher than first conductivity is provided at rightabout from each ground floor to conductor foil.
14. method according to claim 13, wherein, first conductivity is zero, makes electric current only be transmitted to conductor foil from ground floor, and does not lead in the opposite directions from the conductor foil to the ground floor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009008497.5 | 2009-02-11 | ||
| DE200910008497 DE102009008497A1 (en) | 2009-02-11 | 2009-02-11 | Electrolytic starting capacitor for starting alternating current motor in electrical circuit, has circuit with respective electrical conductivities in direction from conductive foil to layer, and another direction from layer to foil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101877280A CN101877280A (en) | 2010-11-03 |
| CN101877280B true CN101877280B (en) | 2012-08-15 |
Family
ID=42338615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101416834A Expired - Fee Related CN101877280B (en) | 2009-02-11 | 2010-02-11 | Electrolytic capacitor with a heat-quantity reduction structure |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN101877280B (en) |
| DE (1) | DE102009008497A1 (en) |
| RU (1) | RU2412499C1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103700510A (en) * | 2013-12-03 | 2014-04-02 | 何平洲 | Starting protection device of capacitor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3988650A (en) * | 1974-02-08 | 1976-10-26 | Siemens Aktiengesellschaft | Aluminum-electrolytic capacitor having a low impedance and low inductance |
| US5424908A (en) * | 1993-05-12 | 1995-06-13 | Rohm Co., Ltd. | Package-type solid electrolytic capacitor |
| US6208502B1 (en) * | 1998-07-06 | 2001-03-27 | Aerovox, Inc. | Non-symmetric capacitor |
| US6307733B1 (en) * | 1999-01-27 | 2001-10-23 | Nichicon Corporation | Aluminum electrolytic capacitor |
| CN1707710A (en) * | 2005-04-11 | 2005-12-14 | 万裕三信电子(东莞)有限公司 | Aluminium electrolytic capacitor and electrolyte |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1588519A1 (en) * | 1967-12-30 | 1970-12-10 | Licentia Gmbh | Series capacitors switched by anti-parallel valves |
| JPS4878462A (en) * | 1972-01-27 | 1973-10-22 | ||
| JPS5448066A (en) * | 1977-09-26 | 1979-04-16 | Ushio Nagase | Electrolye condenser circuit for aac |
| ATE51732T1 (en) * | 1985-07-26 | 1990-04-15 | Siemens Ag | CIRCUIT ARRANGEMENT IN WHICH AN AC-POWERED CONSUMER IS SERIES WITH A CONDENSER UNIT. |
| JPS63187321U (en) * | 1987-05-25 | 1988-11-30 |
-
2009
- 2009-02-11 DE DE200910008497 patent/DE102009008497A1/en not_active Withdrawn
-
2010
- 2010-02-10 RU RU2010104175/07A patent/RU2412499C1/en not_active IP Right Cessation
- 2010-02-11 CN CN2010101416834A patent/CN101877280B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3988650A (en) * | 1974-02-08 | 1976-10-26 | Siemens Aktiengesellschaft | Aluminum-electrolytic capacitor having a low impedance and low inductance |
| US5424908A (en) * | 1993-05-12 | 1995-06-13 | Rohm Co., Ltd. | Package-type solid electrolytic capacitor |
| US6208502B1 (en) * | 1998-07-06 | 2001-03-27 | Aerovox, Inc. | Non-symmetric capacitor |
| US6307733B1 (en) * | 1999-01-27 | 2001-10-23 | Nichicon Corporation | Aluminum electrolytic capacitor |
| CN1707710A (en) * | 2005-04-11 | 2005-12-14 | 万裕三信电子(东莞)有限公司 | Aluminium electrolytic capacitor and electrolyte |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2412499C1 (en) | 2011-02-20 |
| CN101877280A (en) | 2010-11-03 |
| DE102009008497A1 (en) | 2010-08-19 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: DANFOSS COMPRESSORS GMBH Free format text: FORMER OWNER: DANFOSS FLENSBURGER CO., LTD. Effective date: 20110701 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20110701 Address after: Germany Flensburg Applicant after: Danforth home compressors Ltd Address before: Germany Flensburg Applicant before: Danfoss Flensburg limited liability company |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120815 Termination date: 20210211 |