WO1999052164A1 - Pem-type fuel cell assembly having multiple parallel fuel cell sub-stacks - Google Patents
Pem-type fuel cell assembly having multiple parallel fuel cell sub-stacks Download PDFInfo
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- WO1999052164A1 WO1999052164A1 PCT/US1999/005575 US9905575W WO9952164A1 WO 1999052164 A1 WO1999052164 A1 WO 1999052164A1 US 9905575 W US9905575 W US 9905575W WO 9952164 A1 WO9952164 A1 WO 9952164A1
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- WO
- WIPO (PCT)
- Prior art keywords
- fuel cell
- fluid flow
- sub
- stacks
- fluid
- Prior art date
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 262
- 239000012530 fluid Substances 0.000 claims abstract description 214
- 239000012528 membrane Substances 0.000 claims abstract description 38
- 239000012811 non-conductive material Substances 0.000 claims abstract description 21
- 238000009792 diffusion process Methods 0.000 claims abstract description 7
- 239000007784 solid electrolyte Substances 0.000 claims description 20
- 239000003054 catalyst Substances 0.000 claims description 19
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 15
- 239000001301 oxygen Substances 0.000 claims description 15
- 229910052760 oxygen Inorganic materials 0.000 claims description 15
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 14
- 239000001257 hydrogen Substances 0.000 claims description 13
- 229910052739 hydrogen Inorganic materials 0.000 claims description 13
- 239000004020 conductor Substances 0.000 claims description 10
- 239000002826 coolant Substances 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 8
- 239000000376 reactant Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000000853 adhesive Substances 0.000 claims description 7
- 230000001070 adhesive effect Effects 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 4
- 239000003792 electrolyte Substances 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 239000005518 polymer electrolyte Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 3
- 239000007800 oxidant agent Substances 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920000557 Nafion® Polymers 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000036647 reaction Effects 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 125000000542 sulfonic acid group Chemical group 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical compound FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0204—Non-porous and characterised by the material
- H01M8/0223—Composites
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0247—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the form
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
- H01M8/0263—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant having meandering or serpentine paths
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0267—Collectors; Separators, e.g. bipolar separators; Interconnectors having heating or cooling means, e.g. heaters or coolant flow channels
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/241—Grouping of fuel cells, e.g. stacking of fuel cells with solid or matrix-supported electrolytes
- H01M8/242—Grouping of fuel cells, e.g. stacking of fuel cells with solid or matrix-supported electrolytes comprising framed electrodes or intermediary frame-like gaskets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2457—Grouping of fuel cells, e.g. stacking of fuel cells with both reactants being gaseous or vaporised
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2465—Details of groupings of fuel cells
- H01M8/2483—Details of groupings of fuel cells characterised by internal manifolds
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0017—Non-aqueous electrolytes
- H01M2300/0065—Solid electrolytes
- H01M2300/0082—Organic polymers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04067—Heat exchange or temperature measuring elements, thermal insulation, e.g. heat pipes, heat pumps, fins
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/249—Grouping of fuel cells, e.g. stacking of fuel cells comprising two or more groupings of fuel cells, e.g. modular assemblies
-
- 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
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Definitions
- This invention concerns in general fuel cells formed by aligning fluid flow plates and other components to form a fuel cell stack assembly.
- this invention provides an improved fuel cell stack assembly having multiple integrated fuel cell sub-stacks. While the invention can be applied to various apparatuses involving, e.g., stacked fluid flow plates, it is particularly pertinent to fuel cells using Proton Exchange Membrane technology.
- a proton exchange membrane (PEM) fuel cell converts the chemical energy of fuels and oxidants directly into electrical energy.
- PEM fuel cells offer many advantages over conventional means of generating electrical energy. For example: they operate at relatively low temperatures and therefore require little or no warmup time; they are clean (their exhaust is typically water and air) ; they are efficient; and the typical sources of fuel/oxidant (hydrogen, air/oxygen) are in abundant supply.
- the centerpiece of a typical PEM-type fuel cell is a solid polymer electrolyte (the PEM) that permits the passage of protons (i.e., H + ions) from the anode side of the fuel cell to the cathode side of the fuel cell - 2 -
- protons i.e., H + ions
- reactant fluids e.g., hydrogen and air/oxygen gases
- Fig. 1 depicts a conventional PEM-type fuel cell.
- a reaction on the anode side of the PEM produces protons (H + ) and electrons.
- the protons pass through the membrane to the cathode side, while the electrons travel to the cathode side of the membrane through an external electrical conductor.
- the protons and electrons react with oxygen gas to produce water.
- the external electron flow from the anode to the cathode is the electrical energy created by the fuel cell reaction that can be used to supply electricity to a load.
- the PEM fuel cell 100 comprises an anode-side fluid flow plate 102 for the flow of hydrogen, an anode area 104, a proton exchange membrane 106, a cathode area 108, and a cathode-side fluid flow plate 110 for the flow of oxygen or air containing oxygen.
- Areas 104 and 108 conventionally include a gas diffusion means (not shown) .
- Hydrogen gas introduced from a hydrogen manifold 112 at the anode-side fluid flow plate 102 travels along a fluid flow channel 124 in the anode- side flow plate 102, and also diffuses in a direction perpendicular to the flow channel towards the anode area 104.
- the hydrogen gas is oxidized to form hydrogen nuclei (H + ions or protons) and electrons .
- the H + ions travel through the proton exchange membrane 106 to the cathode area 108, but the hydrogen gas itself does not penetrate the proton exchange membrane 106.
- the electrons formed by the above-mentioned reaction are conducted from the anode area 104 to the anode-side fluid flow plate 102, to conductive collector plate (s) 114. Electrons flow from the collector plate (s) 114 through an external electrical conductor 116 to a load 118, and from the load to the cathode side of the fuel cell.
- oxygen gas either in pure form or as a component of air, is introduced to a channel 120 on a cathode-side fluid flow plate 110 from an oxygen manifold 122.
- the oxygen reacts with the protons (H + ) coming through the membrane 106, and the electrons coming from the external conductor, to form water.
- Each fuel cell typically delivers a relatively small voltage, on the order of 0.4 to 0.9 volts.
- fuel cells are often disposed as multiple layers connected in series within a fuel cell stack (described further herein) .
- this invention comprises in one aspect a fluid flow plate assembly for a fuel cell.
- the fluid flow plate assembly includes a fluid flow plate having at least one flow channel, and a manifold hole whose perimeter constitutes a section of a manifold of the fuel cell.
- the fluid flow plate is divided into multiple fluid flow sub-plates, each fluid flow sub-plate is electrically insulated from all other fluid flow sub-plates of the plate assembly.
- the at least one flow channel intersects the manifold hole for communicating fluid either to or from at least one fluid flow sub-plate of the multiple fluid flow sub- plates of the fluid flow plate.
- the fuel cell comprises a PEM-type fuel cell stack and each fluid flow sub-plate comprises a separate conductive member within the fluid flow plate.
- the invention comprises a fuel cell assembly which includes multiple fuel cell sub- stacks disposed in parallel and having multiple layers. At least some layers of the multiple layers comprise shared layers between the fuel cell sub-stacks.
- One shared layer is a fluid flow plate assembly which includes a fluid flow plate having at least one flow channel, and a manifold hole whose perimeter constitutes a section of a manifold of the fuel cell.
- the fluid flow plate is divided into multiple fluid flow sub-plates, each fluid flow sub-plate being electrically insulated from all other fluid flow sub- plates of the plate assembly.
- the at least one flow channel intersects the manifold hole for communicating fluid either to or from at least one fluid flow sub- plate of the multiple sub-plates in the plate assembly.
- the invention comprises a membrane electrode assembly (MEA) for a PEM-type fuel cell stack.
- the membrane electrode assembly includes a solid electrolyte layer having two main surfaces and multiple regions of catalyst applied to each main surface of the electrolyte layer.
- the PEM-type fuel cell stack comprises multiple fuel cell sub-stacks disposed in parallel, and the MEA is designed to be shared by the multiple parallel fuel cell sub-stacks. When shared, at least some catalyst regions on the main surfaces of the solid electrolyte layer align to different fuel cell sub-stacks of the multiple fuel cell sub-stacks comprising the PEM-type fuel cell stack .
- the invention encompasses a fuel cell assembly having multiple fuel cell sub- stacks disposed in parallel, with each fuel cell sub- stack comprising a PEM-type fuel cell.
- the multiple parallel fuel cell sub-stacks comprise multiple layers and at least some layers of the multiple layers are shared between fuel cell sub-stacks.
- One shared layer comprises a membrane electrode assembly (MEA) which includes a solid electrolyte layer having two main surfaces and multiple regions of catalyst applied to each main surface of the electrolyte layer.
- MEA membrane electrode assembly
- At least some catalyst regions on the main surfaces of the solid electrolyte layer align with and comprise part of different fuel cell sub-stacks of the multiple parallel fuel cell sub-stacks so that the MEA is shared between at least two fuel cell sub-stacks in the fuel cell assembly.
- the invention comprises a PEM-type fuel cell stack which includes multiple layers - 6 -
- the multiple layers define multiple parallel fuel cell sub-stacks. At least some layers of the multiple layers are shared by at least two sub-stacks of the multiple parallel sub-stacks.
- the shared layers each contain a manifold hole whose perimeter constitutes a section of a fluid manifold of the PEM-type fuel cell stack. The fluid manifold is disposed in the interior of the PEM-type fuel cell stack intermediate the multiple parallel fuel cell sub- stacks and the manifold hole is disposed between the at least two sub-stacks sharing the layer.
- the shared layers can comprise shared fluid flow plate assemblies and/or shared membrane electrode assemblies as summarized above.
- this invention presents various novel fluid flow plate and membrane electrode assemblies for a fuel cell stack having multiple fuel cell sub-stacks disposed in parallel.
- the structures described allow/comprise a smaller overall stack size without sacrificing stack voltage and reduce stack costs by minimizing the number of plates and other layers in the stack.
- a full size flow plate assembly in accordance with this invention is designed with a plurality of fluid flow sub-plates, each of which will comprise part of one sub-stack of the multiple sub-stacks comprising the fuel cell stack.
- the electrically conductive, fluid flow sub-plates are electrically insulated laterally from each other and the sub-stacks are electrically connected in series, parallel, or a combination thereof, within the main fuel cell stack to provide a higher output voltage.
- a four sub-stack embodiment is described in detail herein, but the - 7 -
- manifolding and bolting can reside between the multiple sub-stacks in the middle of the fuel cell stack.
- bolts within the middle of the fuel cell assembly, clamping pressure is better distributed and end plate deflection is minimized.
- Using an adhesive between various plates within the fuel cell assembly can further reduce the requirements for bolting.
- a single membrane electrode assembly is preferably shared by PEM-type fuel cells in different sub-stacks of a PEM-type fuel cell assembly, with different voltage potentials existing across the membrane regions aligned to different sub-stacks of the assembly.
- the MEA is fabricated in a configuration that optimizes material usage.
- Fig. 1 is a sectional, elevational view of a PEM fuel cell, for which a fluid flow plate assembly in accordance with the present invention can be used;
- Fig. 2 is a sectional, elevational view of one embodiment of a fuel cell assembly to incorporate the fluid flow plate assembly, membrane electrode assembly and parallel sub-stack concepts of the present invention
- Fig. 3 is an isometric view of the fuel cell assembly embodiment of Fig. 2;
- Fig. 4 is an exploded elevational view of one embodiment of a fuel cell assembly in accordance with the present invention having multiple parallel fuel cell sub-stacks with shared flow plates and shared MEA layers;
- Fig. 5 is a partially exploded plan view of the fuel cell assembly embodiment of Fig. 4;
- Fig. 6 is an enlarged plan view of the fluid flow plate assembly of Figs. 4 & 5, showing multiple electrically conductive, fluid flow sub-plates 420 in accordance with one aspect of the present invention
- Fig. 7 is a representation of end plate 302 of
- Fig. 8 is a representation of end plate 304 of
- FIG. 4 showing the collector plates at the opposite end of each sub-stack of the fuel cell assembly, as well as series electrical connection of two different pairs of sub-stacks;
- Fig. 9 is a schematic of the series electrical connection of the four sub-stacks of Figs. 4-8 for a fuel cell assembly in accordance with the present invention;
- Fig. 10 is a plan view of an alternate embodiment of a fluid flow plate assembly in accordance with the present invention (again for a four sub-stack example) in which air/oxygen is exhausted directly to the ambient environment ;
- Fig. 11 is a plan view of still another embodiment of a fluid flow plate assembly in accordance with the present invention wherein three electrically conductive, fluid flow sub-plates 1104 are defined within the plate assembly, which also employs a single, open-face fluid flow channel for providing fluid to each of the three sub-plates.
- this invention comprises a fuel cell assembly having various novel features, including provision of multiple "integrated" fuel cell sub-stacks in parallel within a PEM-type assembly so that the sub- stacks share certain fuel cell layers.
- a shared fluid flow plate assembly is provided wherein the plate is divided into multiple fluid flow sub- plates, each of which is electrically conductive and insulated from the other sub-plates in the plate assembly.
- the sub-plates each align with and comprise part of a respective sub-stack of the fuel cell assembly.
- Compaction of the fuel cell assembly is further achieved by providing fluid manifolds in the middle of the assembly between the sub-stacks, as well as by providing one or more bolts or other structural members in the middle of the assembly to better distribute a desired clamping force.
- Further features of this invention include the sharing of an electrolyte layer among multiple sub-stacks within the fuel cell assembly, with different regions of the electrolyte comprising parts of different sub-stacks. These different regions of the electrolyte may also have different applied voltage potentials.
- Non-conductive and conductive adhesives can be used within the fuel cell assembly as substitutes for gaskets and to reduce the clamping force conventionally applied between end plates of a fuel cell assembly.
- Figs. 2 & 3 depict the basic structure of a fuel cell assembly to incorporate features in accordance with the principles of this invention.
- This fuel cell assembly (or stack), generally denoted 200, includes end plates 202 & 204, insulation layers 206 & 208, and current collector/conductor plates 210 & 212 at ⁇ 11 -
- a plurality of series connected fuel cells 214 are disposed in stacked relation between the end plates. Conventionally, this plurality of fuel cells 214 might comprise a plurality of series connected PEM-type fuel cells 100 such as depicted in Fig. 1.
- the individual layers 218 of the series connected fuel cells comprising stack 200 include aligned openings which form fluid manifolds 220 for supplying fluids to, removing fluids from, and otherwise communicating and/or servicing fluids to the plurality of fuel cells of the stack.
- Structural members or bolts 216 are employed to impart a desired compressive force to the layers of fuel cells.
- the layers of fuel cells may have applied compressive forces equivalent to approximately 200 to 400 pounds per square inch.
- FIG. 4-9 One example of a fuel cell assembly pursuant to the present invention is depicted in Figs. 4-9.
- four sub-stacks of PEM-type fuel cells are disposed in parallel between two end plates.
- FIG. 4 An exploded, elevational view of the fuel cell assembly (or stack), denoted 300, is shown in Fig. 4.
- Assembly 300 includes a plurality of active layers positioned between a first end plate 302 and a second end plate 304.
- End plates 302 _ 304 include recesses 306 _ 308, respectively, for receiving collector plates 310 disposed at each end of the four sub-stacks 320.
- end plates 302 _ 304 could be constructed in accordance with the teachings of a co- pending, commonly assigned United States Patent ⁇ 12 -
- Adjacent to each collection plate 310 is (for example) a composite, monopolar fluid flow plate assembly 330 configured as a shared layer in accordance with the present invention.
- plate 330 could comprise a cooling plate or an integrated cooling and fluid flow plate.
- Individual anode or cathode gas diffusion layers 332, 332' within each sub-stack 320 of the fuel cell assembly 300 sandwich a shared membrane or solid electrolyte assembly (MEA) 334.
- MEA solid electrolyte assembly
- a composite, bipolar fluid flow plate assembly 340 configured as a shared layer in accordance with the present invention completes stack 300.
- the center layers, between the center lines of the MEAs 334, comprise a repeating fuel cell unit 342 within stack 300.
- the fuel cell assembly may comprise two fuel cell units 342 to over one hundred such fuel cell units 342 compressed together in series within the stack to define the multiple parallel sub-stacks in accordance with this invention.
- Figs. 4 & 5 also depict structural members or bolts 360 at the periphery of the stack, as well as intermediate the sub-stacks to better distribute the compressive forces applied to the assembly via end plates 302 & 304.
- fluid manifold couplings 370 are shown at the periphery of end plate 302. As noted above, however, one or more fluid manifolds could also be disposed within the fuel cell assembly intermediate the sub-stacks. • 13 -
- FIGs. 5 & 6 One embodiment of a fluid flow plate 400 in accordance with the present invention is shown in Figs. 5 & 6.
- This fluid flow plate 400 may be a bipolar plate, monopolar plate, combined monopolar plate (e.g., anode cooler or cathode cooler), or cooling plate.
- plate 400 is assumed to comprise a bipolar fluid flow plate having a first main surface 402 with a main flow channel 404 thereon, and a second main surface (not shown) with a similar type main flow channel 404' (shown in phantom) thereon.
- Fluid flow plate 400 comprises a non-conductive material or region 410 and electrically conductive members or flow fields 420, each of which will comprise one layer in a respective sub-stack (320) of the fuel cell assembly.
- Each conductive flow field 420 comprises a sub-plate that is electrically insulated from the other sub-plates of plate assembly 400.
- Channel 404 inlets/ports 406 and outlets/ports 408 are in fluid communication with manifolds 430 & 430', respectively, for providing/removing fluid to/from the fluid flow sub-plates 420 in parallel.
- a dedicated reactant inlet and outlet, or multiple reactant inlets and outlets could be provided for one or more open- face fluid channel (s) on each sub-plate 420 of each main surface of plate assembly 400.
- a detailed description of the construction of fluid flow plate assembly 400 including various alternative embodiments is provided in the above-incorporated patent application entitled "Easily-Formable Fuel Cell Assembly Fluid Flow Plate Having Conductivity And Increased Non-Conductive Material.” ⁇ 14 -
- non-conductive region 410 of plate assembly 400 can include a plurality of semicircular or turning fluid channels 412 for communicating fluid between adjacent parallel channels 414 of the conductive sub-plates 420.
- Region 410 can also include multiple openings 440 disbursed throughout for accommodating structural members or bolts used in clamping the fuel cell assembly together.
- region 410 may support one or more coolant flow channels 450 in fluid communication with appropriate coolant manifolds 452.
- significant features of this invention include the isolation of the electrically conductive sub-plates and the integration of multiple sub-plates onto a single fluid flow plate assembly for inclusion in a PEM-type fuel cell assembly. Further, within such an assembly, the inclusion of bolts and/or manifolds in the interior portion of the plate, for example, through non-conductive region 410, can provide practical commercial advantages.
- cooling can also be integrated into the plate, i.e., assuming that the sub- plates themselves communicate reactant/product to the different sub-stacks of the fuel cell assembly.
- flow channels 406 _ 408 could themselves communicate coolant, humidification, or other product to the sub-stacks within the assembly.
- plate assembly 400 might comprise a bipolar plate, monopolar plate, combined monopolar plate, or cooling plate.
- the number and configuration of the conductive sub-plates 420 can vary (see e.g. Fig. 11) to coincide with the number and location of parallel sub-stacks employed within the fuel cell assembly constructed in accordance with the present invention. • 15 -
- a fuel cell unit 342' in accordance with this invention comprises multiple fuel cell units disposed in parallel and electrically isolated from each other laterally. These multiple fuel cell units are stacked within the fuel cell assembly and define laterally the multiple parallel sub-stacks of fuel cells. These parallel sub-stacks of fuel cells share certain layers of the fuel cell units in accordance with this invention. Further, the multiple parallel sub-stacks are electrically series connected through, e.g., bus bars in the end plates of the fuel cell assembly.
- Each fuel cell unit 342' includes a membrane or solid electrolyte assembly 503 having anode and cathode catalysts 504 in alternating regions aligned to different ones of the parallel implemented sub-stacks.
- solid electrolyte 502 is a solid polymer electrolyte made using a polymer such as that manufactured by E.I. DuPont de Nemours Company, and sold under the trademark NAFION ® .
- an active electrolyte such as a sulfonic acid group might be employed within the polymer.
- the solid polymer electrolyte might be formed of a material manufactured by W.L. Gore _ Associates (Elkton, Maryland) and sold under the trademark GORE-SELECT ® .
- Catalysts 504 facilitate chemical reactions at the anode and cathode sides of the solid polymer electrolyte.
- the electrolyte and catalyst regions can be referred to as a "membrane electrode assembly” (MEA) 503.
- MEA membrane electrode assembly
- MEA 503 is sandwiched between individual anode and cathode gas diffusion layers (GDLs) 510 of the separate sub-stacks, with the anode and cathode of a given fuel ⁇ 16 -
- GDLs gas diffusion layers
- GDLs 510 can be formed with a resilient and conductive material such as carbon fabric or carbon fiber paper.
- porous carbon cloth or paper is infused with a slurry of carbon black and sintered with TEFLON ® material .
- the anode and cathode GDLs serve as electrochemical conductors between catalyzed sites 504 on the solid polymer electrolyte 502, with the fuel (e.g., hydrogen) and oxidant (e.g., air/oxygen) flowing in anode and cathode flow channels in sub-plates 420 at each end of the fuel cell unit 342' of Fig. 5.
- fuel e.g., hydrogen
- oxidant e.g., air/oxygen
- the GDLs also present to the surfaces of the MEA a combination of microscopic porosity and macroscopic porosity.
- Microscopic porosity allows reactant gas molecules to pass generally longitudinally from the sub-plate 420 flow channels to the surface of the MEA.
- Macroscopic porosity allows product water formed at the cathode surface of the MEA to be removed by flowing generally longitudinally into the cathode flow channels, to prevent flooding of the catalyst particles.
- Figs. 7-9 depict one embodiment of the present invention for electrical connection of the parallel disposed fuel cell sub-stacks in the fuel cell assembly of Figs. 4-6.
- a simplified end plate 302 is shown along with embedded collector plates 310, which conduct current at one end of the respective sub- stacks.
- Electrical connections 702 & 704 are made to the fuel cell assembly, e.g., for driving a load (not shown) .
- Fig. 8 depicts the opposite end plate 304 wherein collector plates 310 are again imbedded for conducting current at the opposite ends of the sub- stacks.
- bus bars 710, 712 _ 714 are shown imbedded within end plate 304, while bar 714 is imbedded within end plate 302.
- Fig. 9 presents a schematic of this electrical interconnection of the fuel cell sub-stacks 320 of the assembly.
- FIGs. 7 & 8 Also shown in Figs. 7 & 8 are manifold openings
- opening 812 may be provided to accommodate a structural member, again for better distribution of compressive force within the fuel cell assembly.
- Fig. 10 presents an alternate embodiment of a fluid flow plate assembly 1000 in accordance with this invention.
- This assembly includes multiple fluid flow sub-plates 1002 which are in alignment with and form a portion of respective fuel cell sub-stacks of the fuel cell assembly as described above.
- Each fluid flow sub- plate 1002 is electrically isolated by non-conductive region 1004.
- a PEM fuel cell assembly is assumed and openings 1010 are provided in plate assembly 1000. These openings have perimeters which form sections of a hydrogen inlet manifold that provides hydrogen fluid to the fluid flow sub-plates 1002.
- Outlet manifolds would align to openings 1020.
- Air/oxygen manifolds align to openings 1030, which are also provided intermediate the fluid flow sub-plates 1002.
- the fuel cell assembly is configured as an atmospheric pressure stack wherein air is supplied through the manifolds to the cathode flow fields of each of the four parallel sub-stacks, and then exhausted directly into the atmosphere.
- each fuel flow sub-plate is arranged so that an edge of the cathode flow field extends near an outer edge of the fluid flow plate assembly to facilitate exhausting of the air to the atmosphere.
- Fig. 11 presents still another embodiment of a fluid flow plate assembly 1100 in accordance with the present invention.
- This plate assembly 1100 includes non-conductive region 1102 and multiple conductive regions 1104.
- Each conductive region 1104 comprises a fluid flow sub-plate which is electrically isolated from its adjacent sub-plate (s) by non-conductive material 1102.
- Inlet and outlet manifolds provide fluid to a single flow channel 1106 extending through and defining the multiple fluid flow fields of the sub- plates.
- the single flow channel includes multiple parallel channels within each conductive sub-plate and fluid passages within region 1102 interconnecting the channels of the three fluid flow sub-plates.
- this invention provides fluid flow plate and membrane electrode assemblies for a fuel cell stack having multiple parallel fuel cell sub-stacks.
- the structures presented allow/comprise a smaller - 19 -
- a full size flow plate assembly in accordance with this invention is designed with a plurality of fluid flow sub-plates, each of which will comprise part of one sub-stack of the parallel sub-stacks comprising the fuel cell assembly.
- the conductive fluid flow sub-plates are electrically insulated laterally from each other and are electrically connected in series within the main fuel cell stack to provide a higher output voltage .
- a four sub-stack embodiment is described, but the concepts presented apply to any electrochemical fuel cell stack having two or more sub-stacks.
- a single membrane electrode assembly is preferably shared by PEM-type fuel cells in different sub-stacks of a PEM-type fuel cell assembly.
- the MEA can have different voltage potentials existing across the membrane regions aligned to different sub-stacks of the assembly.
- the MEA is fabricated in a configuration that optimizes material usage.
- non-conductive adhesive can be used between the non- conductive material of each fluid flow plate assembly and adjacent membrane electrode assembly in the fuel - 20 -
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99913884A EP1070361B1 (en) | 1998-04-03 | 1999-03-16 | Pem-type fuel cell assembly having multiple parallel fuel cell sub-stacks |
JP2000542814A JP3511206B2 (en) | 1998-04-03 | 1999-03-16 | PEM fuel cell assembly having a plurality of parallel fuel cell substacks |
AU31862/99A AU3186299A (en) | 1998-04-03 | 1999-03-16 | Pem-type fuel cell assembly having multiple parallel fuel cell sub-stacks |
DE69903721T DE69903721T2 (en) | 1998-04-03 | 1999-03-16 | PEM FUEL CELL ARRANGEMENT WITH SEVERAL PARALLEL ARRANGED FUEL CELL SUBSTACKS |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/054,425 | 1998-04-03 | ||
US09/054,425 US5945232A (en) | 1998-04-03 | 1998-04-03 | PEM-type fuel cell assembly having multiple parallel fuel cell sub-stacks employing shared fluid plate assemblies and shared membrane electrode assemblies |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999052164A1 true WO1999052164A1 (en) | 1999-10-14 |
Family
ID=21990979
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1999/005575 WO1999052164A1 (en) | 1998-04-03 | 1999-03-16 | Pem-type fuel cell assembly having multiple parallel fuel cell sub-stacks |
Country Status (6)
Country | Link |
---|---|
US (1) | US5945232A (en) |
EP (1) | EP1070361B1 (en) |
JP (1) | JP3511206B2 (en) |
AU (1) | AU3186299A (en) |
DE (1) | DE69903721T2 (en) |
WO (1) | WO1999052164A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2005045974A1 (en) * | 2003-10-31 | 2005-05-19 | Hewlett-Packard Development Company L.P. | Fuel cell assembly gasket for fuel containment |
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Families Citing this family (86)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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US6854964B1 (en) | 2000-09-05 | 2005-02-15 | Imperial Custom Molding, Inc. | Apparatus for molding a plate |
US6630263B1 (en) * | 2000-11-20 | 2003-10-07 | Plug Power Inc. | Fuel cell systems and methods |
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US20020086294A1 (en) * | 2000-12-29 | 2002-07-04 | Ellson Richard N. | Device and method for tracking conditions in an assay |
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US20040043274A1 (en) * | 2001-06-01 | 2004-03-04 | Scartozzi John P. | Fuel cell power system |
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US6780536B2 (en) * | 2001-09-17 | 2004-08-24 | 3M Innovative Properties Company | Flow field |
DE10158771C2 (en) * | 2001-11-23 | 2003-09-18 | Reinz Dichtungs Gmbh & Co Kg | The fuel cell system |
US6703722B2 (en) | 2001-12-14 | 2004-03-09 | Avista Laboratories, Inc. | Reconfigurable plural DC power source power system responsive to changes in the load or the plural DC power sources |
JP3702848B2 (en) * | 2002-01-10 | 2005-10-05 | 日産自動車株式会社 | Fuel cell |
US6998188B2 (en) * | 2002-02-19 | 2006-02-14 | Petillo Phillip J | Fuel cell components |
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US20040214067A1 (en) * | 2002-12-04 | 2004-10-28 | Chris Boyer | Assembling sub-stacks of electrochemical cells |
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DE10323881A1 (en) | 2003-05-26 | 2004-12-23 | Siemens Ag | Contact device and fuel cell stack or fuel cell block with such a contact device |
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US7670707B2 (en) * | 2003-07-30 | 2010-03-02 | Altergy Systems, Inc. | Electrical contacts for fuel cells |
US6974648B2 (en) * | 2003-09-12 | 2005-12-13 | General Motors Corporation | Nested bipolar plate for fuel cell and method |
US7297428B2 (en) * | 2003-10-31 | 2007-11-20 | 3M Innovative Properties Company | Registration arrangement for fuel cell assemblies |
US20050095485A1 (en) * | 2003-10-31 | 2005-05-05 | 3M Innovative Properties Company | Fuel cell end plate assembly |
JP2005216535A (en) * | 2004-01-27 | 2005-08-11 | Canon Inc | Fuel cell |
KR100542200B1 (en) * | 2004-01-30 | 2006-01-10 | 삼성에스디아이 주식회사 | Fuel cell system |
US8486575B2 (en) * | 2004-02-05 | 2013-07-16 | GM Global Technology Operations LLC | Passive hydrogen vent for a fuel cell |
GB2413002B (en) * | 2004-04-08 | 2006-12-06 | Intelligent Energy Ltd | Fuel cell gas distribution |
US20050249987A1 (en) * | 2004-05-04 | 2005-11-10 | Angstrom Power Incorporated | Fault tolerant fuel cell systems |
US7531264B2 (en) * | 2004-06-07 | 2009-05-12 | Hyteon Inc. | Fuel cell stack with even distributing gas manifolds |
US7524575B2 (en) * | 2004-06-07 | 2009-04-28 | Hyteon Inc. | Flow field plate for use in fuel cells |
US20060008695A1 (en) * | 2004-07-09 | 2006-01-12 | Dingrong Bai | Fuel cell with in-cell humidification |
US7604888B2 (en) * | 2004-07-30 | 2009-10-20 | Gm Global Technologies Operations, Inc. | Stamped PEM fuel cell plate manufacturing |
US7314680B2 (en) * | 2004-09-24 | 2008-01-01 | Hyteon Inc | Integrated fuel cell power module |
US7569303B2 (en) | 2004-09-24 | 2009-08-04 | Hydrogenics Corporation | Membrane electrode assembly with modified catalyst layout |
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US20100129732A1 (en) * | 2008-05-01 | 2010-05-27 | Mcelroy James F | Electrochemical Cell Stack Assembly |
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US20110256463A1 (en) * | 2010-04-15 | 2011-10-20 | Apple Inc. | Parallel fuel cell stack architecture |
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US20230134415A1 (en) * | 2020-03-26 | 2023-05-04 | Eh Group Engineering Ag | Fuel cell |
DE102021129384A1 (en) | 2021-11-11 | 2023-05-11 | MTU Aero Engines AG | FUEL CELL FOR A FUEL CELL STACK |
WO2023132955A1 (en) * | 2022-01-05 | 2023-07-13 | Electric Hydrogen Co. | Active electrolyzer stack compression |
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Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5069985A (en) * | 1990-02-15 | 1991-12-03 | International Fuel Cells Corporation | Plaque fuel cell stack |
JPH06338342A (en) * | 1993-05-31 | 1994-12-06 | Nissan Motor Co Ltd | Cell stack structure for solid high polymer electrolytic fuel cell |
JPH06349511A (en) * | 1993-06-08 | 1994-12-22 | Murata Mfg Co Ltd | Fuel cell |
JPH06349512A (en) * | 1993-06-08 | 1994-12-22 | Murata Mfg Co Ltd | Fuel cell |
WO1995004382A1 (en) * | 1993-07-28 | 1995-02-09 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Battery shaped as a membrane strip containing several cells |
JPH08171925A (en) * | 1994-12-19 | 1996-07-02 | Mitsubishi Electric Corp | Solid high polymer type fuel cell |
JPH08273696A (en) * | 1995-03-29 | 1996-10-18 | Mazda Motor Corp | Fuel cell stack structure |
US5629104A (en) * | 1994-11-23 | 1997-05-13 | Detroit Center Tool | Modular electrical energy device |
US5686197A (en) * | 1994-06-29 | 1997-11-11 | Aisin Seiki Kabushiki Kaisha | Fuel cell |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1596311C2 (en) * | 1966-12-14 | 1971-05-27 | Varta Ag | Process for the condensation of water of reaction in the gas cycle and for the discharge of the inert gases in a fuel battery |
FR2254118B1 (en) * | 1973-12-06 | 1980-01-04 | Comp Generale Electricite | |
US4310605A (en) * | 1980-09-22 | 1982-01-12 | Engelhard Minerals & Chemicals Corp. | Fuel cell system |
US4443522A (en) * | 1981-04-06 | 1984-04-17 | Struthers Ralph C | Metal/acid ion permeable membrane fuel cell |
JPH0630253B2 (en) * | 1985-03-22 | 1994-04-20 | 株式会社日立製作所 | Fuel cell |
DE4011506A1 (en) * | 1990-04-10 | 1991-10-17 | Abb Patent Gmbh | FUEL CELL ARRANGEMENT AND METHOD FOR THE PRODUCTION THEREOF |
EP0530451B1 (en) * | 1991-09-03 | 1998-01-21 | Sanyo Electric Co., Ltd. | A solid oxide fuel cell system |
DE4324907A1 (en) * | 1993-07-24 | 1995-01-26 | Dornier Gmbh | Interconnection of fuel cells |
US5480738A (en) * | 1994-02-04 | 1996-01-02 | Ceramatec, Inc. | Fuel cell module |
RU2174728C2 (en) * | 1994-10-12 | 2001-10-10 | Х Пауэр Корпорейшн | Fuel cell using integrated plate technology for liquid-distribution |
JPH08130023A (en) * | 1994-10-27 | 1996-05-21 | Aisin Seiki Co Ltd | Fuel cell |
US5607786A (en) * | 1995-05-05 | 1997-03-04 | International Fuel Cells Corporation | Fuel cell transport frame |
US5686199A (en) * | 1996-05-07 | 1997-11-11 | Alliedsignal Inc. | Flow field plate for use in a proton exchange membrane fuel cell |
-
1998
- 1998-04-03 US US09/054,425 patent/US5945232A/en not_active Expired - Lifetime
-
1999
- 1999-03-16 DE DE69903721T patent/DE69903721T2/en not_active Expired - Fee Related
- 1999-03-16 JP JP2000542814A patent/JP3511206B2/en not_active Expired - Fee Related
- 1999-03-16 WO PCT/US1999/005575 patent/WO1999052164A1/en active IP Right Grant
- 1999-03-16 AU AU31862/99A patent/AU3186299A/en not_active Abandoned
- 1999-03-16 EP EP99913884A patent/EP1070361B1/en not_active Expired - Lifetime
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5069985A (en) * | 1990-02-15 | 1991-12-03 | International Fuel Cells Corporation | Plaque fuel cell stack |
JPH06338342A (en) * | 1993-05-31 | 1994-12-06 | Nissan Motor Co Ltd | Cell stack structure for solid high polymer electrolytic fuel cell |
JPH06349511A (en) * | 1993-06-08 | 1994-12-22 | Murata Mfg Co Ltd | Fuel cell |
JPH06349512A (en) * | 1993-06-08 | 1994-12-22 | Murata Mfg Co Ltd | Fuel cell |
WO1995004382A1 (en) * | 1993-07-28 | 1995-02-09 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Battery shaped as a membrane strip containing several cells |
US5686197A (en) * | 1994-06-29 | 1997-11-11 | Aisin Seiki Kabushiki Kaisha | Fuel cell |
US5629104A (en) * | 1994-11-23 | 1997-05-13 | Detroit Center Tool | Modular electrical energy device |
JPH08171925A (en) * | 1994-12-19 | 1996-07-02 | Mitsubishi Electric Corp | Solid high polymer type fuel cell |
JPH08273696A (en) * | 1995-03-29 | 1996-10-18 | Mazda Motor Corp | Fuel cell stack structure |
Non-Patent Citations (8)
Title |
---|
CHEMICAL ABSTRACTS, vol. 126, no. 5, 3 February 1997, Columbus, Ohio, US; abstract no. 62764, HASEGAWA ET AL: "Structure of solid polymer electrolyte fuel cell stacks" XP002111252 * |
DATABASE WPI Derwent World Patents Index; AN 95-057936, XP002111254 * |
DATABASE WPI Derwent World Patents Index; AN 95-071577, XP002111256 * |
DATABASE WPI Derwent World Patents Index; AN 96-360221, XP002111255 * |
DATABASE WPI Derwent World Patents Index; AN 97-004498, XP002111253 * |
PATENT ABSTRACTS OF JAPAN vol. 095, no. 003 28 April 1995 (1995-04-28) * |
PATENT ABSTRACTS OF JAPAN vol. 096, no. 011 29 November 1996 (1996-11-29) * |
PATENT ABSTRACTS OF JAPAN vol. 097, no. 002 28 February 1997 (1997-02-28) * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1109241A2 (en) * | 1999-12-13 | 2001-06-20 | General Motors Corporation | Flow channels in current collector plates for fuel cells |
EP1109241A3 (en) * | 1999-12-13 | 2004-10-20 | General Motors Corporation | Flow channels in current collector plates for fuel cells |
DE10392974B4 (en) * | 2002-07-26 | 2007-07-19 | General Motors Corp. (N.D.Ges.D. Staates Delaware), Detroit | Sensor arrangement for the local power and temperature distribution for a fuel cell |
WO2005045974A1 (en) * | 2003-10-31 | 2005-05-19 | Hewlett-Packard Development Company L.P. | Fuel cell assembly gasket for fuel containment |
Also Published As
Publication number | Publication date |
---|---|
EP1070361A1 (en) | 2001-01-24 |
EP1070361B1 (en) | 2002-10-30 |
JP3511206B2 (en) | 2004-03-29 |
DE69903721T2 (en) | 2003-07-10 |
JP2002510851A (en) | 2002-04-09 |
US5945232A (en) | 1999-08-31 |
AU3186299A (en) | 1999-10-25 |
DE69903721D1 (en) | 2002-12-05 |
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