WO2012053288A1 - 燃料電池 - Google Patents
燃料電池 Download PDFInfo
- Publication number
- WO2012053288A1 WO2012053288A1 PCT/JP2011/070130 JP2011070130W WO2012053288A1 WO 2012053288 A1 WO2012053288 A1 WO 2012053288A1 JP 2011070130 W JP2011070130 W JP 2011070130W WO 2012053288 A1 WO2012053288 A1 WO 2012053288A1
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- WO
- WIPO (PCT)
- Prior art keywords
- separator
- communication hole
- fuel cell
- hole
- cooling medium
- Prior art date
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Classifications
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- 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
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- 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
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- 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
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- 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
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
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- 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
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
- H01M8/0273—Sealing or supporting means around electrodes, matrices or membranes with sealing or supporting means in the form of a frame
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- 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
- H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
- H01M8/0276—Sealing means characterised by their form
- H01M8/0278—O-rings
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- 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
- H01M8/0297—Arrangements for joining electrodes, reservoir layers, heat exchange units or bipolar separators to each other
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- 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
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
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- 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
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
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- 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
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- 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
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- 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
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- 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
- the present invention relates to a fuel cell including a cell unit that sandwiches an electrolyte / electrode structure having a pair of electrodes on both sides of an electrolyte with a first separator and a second separator.
- a polymer electrolyte fuel cell employs a polymer electrolyte membrane made of a polymer ion exchange membrane.
- an electrolyte membrane / electrode structure electrolyte / electrode structure in which an anode catalyst electrode and a cathode electrode made of porous carbon are disposed on both sides of a solid polymer electrolyte membrane, respectively.
- a unit cell is configured by being sandwiched by a separator (bipolar plate).
- a fuel cell stack in which a predetermined number of unit cells are stacked is used as an in-vehicle fuel cell stack, for example.
- a fuel cell constitutes a so-called internal manifold provided with an inlet communication hole and an outlet communication hole penetrating in the stacking direction of the separator.
- the fuel gas, the oxidant gas, and the cooling medium are respectively supplied from the respective inlet communication holes to the fuel gas flow path, the oxidant gas flow path, and the cooling medium flow path formed along the electrode surface direction. It is discharged to the outlet communication hole.
- a fuel cell separator disclosed in Japanese Patent Application Laid-Open No. 8-222237 includes a separator plate 1 as shown in FIG.
- the separator plate 1 is made of a metal plate, and a large number of protrusions 2a and 2b are formed on the front and back surfaces by embossing or dimple processing.
- Manifold loading ports 3a, 3b, 3c and 3d for loading gas manifolds are formed through the separator plate 1 outside the regions where the protrusions 2a and 2b are formed.
- the manifold loading ports 3a, 3b, 3c and 3d are used as, for example, a fuel gas introduction manifold, an oxidant gas introduction manifold, a fuel gas discharge manifold and an oxidant gas discharge manifold.
- the manifold loading ports 3a, 3b, 3c and 3d are formed so as to penetrate therethrough, so that the area of the separator plate 1 is considerably increased.
- the amount of expensive materials such as stainless steel increases, and the unit price of parts increases.
- the present invention solves this type of problem, and an object of the present invention is to provide a fuel cell that can satisfactorily reduce the size of a relatively expensive separator and can reduce the cost.
- the present invention relates to a fuel cell including a cell unit that sandwiches an electrolyte / electrode structure having a pair of electrodes on both sides of an electrolyte with a first separator and a second separator.
- a frame member formed of a polymer material is integrally provided on the outer periphery of the electrolyte / electrode structure, and the frame member includes a reaction gas inlet communication hole, a reaction gas outlet communication hole, and a cooling medium.
- a fluid communication hole including an inlet communication hole and a cooling medium outlet communication hole is formed so as to penetrate in the stacking direction, and the fluid communication hole and the reaction surface outer periphery circulate between the frame members adjacent in the stacking direction.
- a sealing member for sealing is sealed.
- At least the first separator or the second separator has two plates that have the same outer shape and are joined to each other, and the outer peripheral ends of the first separator and the second separator are formed from the fluid communication holes. Is also placed inside.
- the outer peripheral ends of the first separator and the second separator are disposed inside the fluid communication hole, and the electrolyte separator / electrode structure is sandwiched between the first separator and the second separator.
- a first reaction gas flow path and a second reaction gas flow path are formed to allow different reaction gases to flow in the separator surface direction.
- reaction gas inlet communication hole and the reaction gas outlet communication hole are connected to the first reaction gas flow path, and the connection flow path is formed on the surface of the frame member, and the separator surface direction Has a groove extending along the line.
- connection channel that connects the reaction gas inlet communication hole and the reaction gas outlet communication hole and the first reaction gas channel is formed, and the connection channel is formed in the frame member, A groove extending along the separator surface direction; and a hole communicating with the groove and penetrating the first separator or the second separator in the stacking direction.
- a frame member formed of a polymer material is integrally provided on the outer periphery of the electrolyte / electrode structure, and the frame member has a reaction gas inlet communication hole, a reaction gas outlet communication hole, and a cooling member.
- a fluid communication hole including a medium inlet communication hole and a cooling medium outlet communication hole is formed to penetrate in the stacking direction.
- the outer peripheral ends of the first separator and the second separator are disposed on the inner side of the fluid communication hole, and at least the first separator or the second separator has a cooling medium flow that causes the cooling medium to flow in the separator surface direction. It has two plates on which a path is formed.
- a fluid communication hole and a seal member that circulates and seals the outer periphery of the reaction surface are interposed, and the cooling medium inlet communication hole, the cooling medium outlet communication hole, and the cooling medium flow A connection channel that communicates with the path is formed.
- the fluid communication hole is formed through the frame member provided on the outer periphery of the electrolyte / electrode structure in the stacking direction, the fluid communication hole is provided in the first separator and the second separator. There is no need.
- the first separator and the second separator can be set to the outer dimensions corresponding to the power generation region, and the size and weight can be easily reduced, and the manufacturing cost of the first separator and the second separator can be reduced. Can do.
- the first separator and the second separator can be efficiently manufactured, and the entire fuel cell can be obtained economically.
- At least the first separator or the second separator has two plates that have the same outer shape and are stacked on each other. For this reason, the manufacturing cost of a separator is reduced effectively and it is economical.
- a seal member that circulates and seals the fluid communication hole is interposed between the frame members adjacent in the stacking direction, and the surface of the frame member and the surface of the first separator are reacted with each other.
- a connection channel that connects the gas inlet communication hole, the reaction gas outlet communication hole, and the reaction gas channel is formed. Therefore, the configuration can be simplified, and the dimensions in the stacking direction of the entire fuel cell can be effectively shortened.
- a seal member that surrounds and seals the fluid communication hole is interposed between the frame members adjacent to each other in the stacking direction, and the reaction gas inlet communication hole and the reaction gas outlet communication hole are connected to the first reaction.
- a connection channel that communicates with the gas channel is formed, and the connection channel is formed in the frame member and communicates with the groove provided along the separator surface direction, and the first separator or the second And a hole penetrating the separator in the stacking direction.
- a seal member that circulates and seals the fluid communication hole is interposed between the frame members adjacent in the stacking direction, and the cooling medium inlet communication hole, the cooling medium outlet communication hole, and the cooling medium flow A connection channel that communicates with the path is formed. Therefore, the configuration can be simplified, and the dimensions in the stacking direction of the entire fuel cell can be effectively shortened.
- FIG. 1 is an exploded perspective view of a fuel cell according to a first embodiment of the present invention.
- FIG. 2 is a cross-sectional view of the fuel cell taken along line II-II in FIG. It is explanatory drawing of the cathode surface of the 1st electrolyte membrane and electrode structure which comprises the said fuel cell. It is explanatory drawing of the anode surface of the said 1st electrolyte membrane and electrode structure. It is explanatory drawing of the cathode surface of the 2nd electrolyte membrane and electrode structure which comprises the said fuel cell. It is explanatory drawing of the anode surface of the said 2nd electrolyte membrane and electrode structure.
- FIG. 2 is a cross-sectional view of the fuel cell taken along line XI-XI in FIG.
- FIG. 2 is a cross-sectional view of the fuel cell taken along line XII-XII in FIG.
- FIG. 3 is a cross-sectional view of the fuel cell taken along line XIII-XIII in FIG.
- FIG. 2 is a cross-sectional view of the fuel cell taken along line XI-XI in FIG.
- FIG. 3 is a cross-sectional view of the fuel cell taken along line XIII-XIII in FIG.
- FIG. 2 is a cross-sectional view of the fuel cell taken along line XIV-XIV in FIG. It is a disassembled perspective explanatory drawing of the fuel cell which concerns on the 2nd Embodiment of this invention.
- FIG. 16 is a cross-sectional view of the fuel cell taken along line XVI-XVI in FIG. 15. It is explanatory drawing of the cathode surface of the 1st electrolyte membrane and electrode structure which comprises the said fuel cell. It is explanatory drawing of the anode surface of the said 1st electrolyte membrane and electrode structure. It is explanatory drawing of the cathode surface of the 2nd electrolyte membrane and electrode structure which comprises the said fuel cell.
- FIG. 16 is a cross-sectional view of the fuel cell taken along line XXV-XXV in FIG.
- FIG. 16 is a cross-sectional view of the fuel cell taken along line XXVI-XXVI in FIG.
- FIG. 16 is a sectional view of the fuel cell taken along line XXVII-XXVII in FIG. It is a disassembled perspective explanatory drawing of the fuel cell which concerns on the 3rd Embodiment of this invention. It is explanatory drawing of the cathode surface of the 1st separator which comprises the said fuel cell. It is sectional drawing of the said fuel cell. It is a section explanatory view of a fuel cell concerning a 4th embodiment of the present invention.
- FIG. 3 is an explanatory diagram of a fuel cell separator disclosed in Japanese Patent Laid-Open No. 8-222237.
- a plurality of cell units 12 are stacked in the direction of arrow A (horizontal direction).
- the cell unit 12 includes a first electrolyte membrane / electrode structure (electrolyte / electrode structure) (MEA) 14, a first separator 16, a second electrolyte membrane / electrode structure (electrolyte / electrode structure) (MEA) 18, and A second separator 20 is provided.
- MEA electrolyte membrane / electrode structure
- MEA electrolyte membrane / electrode structure
- MEA electrolyte membrane / electrode structure
- MEA electrolyte membrane / electrode structure
- a second separator 20 is provided.
- first separator 16 and the second separator 20 are configured by press-molding a metal thin plate into a corrugated shape, but may be configured by a carbon separator instead.
- the first electrolyte membrane / electrode structure 14 and the second electrolyte membrane / electrode structure 18 are, for example, a solid polymer electrolyte membrane (electrolyte) 22 in which a perfluorosulfonic acid thin film is impregnated with water, A cathode side electrode 24 and an anode side electrode 26 sandwiching the solid polymer electrolyte membrane 22 are provided (see FIG. 2).
- the solid polymer electrolyte membrane 22 is set to have the same surface area as the cathode side electrode 24 and the anode side electrode 26.
- the outer peripheral part of the solid polymer electrolyte membrane 22 may protrude from the cathode side electrode 24 and the anode side electrode 26, and the cathode side electrode 24 and the anode side electrode 26 may have different surface areas. .
- a frame portion (frame) formed of an insulating polymer material is formed on the outer peripheral edge portions of the solid polymer electrolyte membrane 22, the cathode-side electrode 24, and the anode-side electrode 26.
- Member) 28a is integrally formed by injection molding, for example.
- a frame portion (frame member) formed of a polymer material is formed on the outer peripheral edge portions of the solid polymer electrolyte membrane 22, the cathode side electrode 24, and the anode side electrode 26.
- 28b is integrally molded by, for example, injection molding.
- the polymer material engineering plastics, super engineering plastics, etc. are adopted in addition to general-purpose plastics.
- the cathode side electrode 24 and the anode side electrode 26 are uniformly coated on the surface of the gas diffusion layer with a gas diffusion layer (not shown) made of carbon paper or the like and porous carbon particles carrying a platinum alloy on the surface. And an electrode catalyst layer (not shown).
- the electrode catalyst layer is in contact with the solid polymer electrolyte membrane 22.
- an oxidant gas inlet for supplying an oxidant gas, for example, an oxygen-containing gas, to one end edge (upper edge) in the direction of arrow C (vertical direction) of the frame parts 28a and 28b.
- a communication hole 30a, a cooling medium inlet communication hole 32a for supplying a cooling medium, and a fuel gas inlet communication hole 34a for supplying a fuel gas, for example, a hydrogen-containing gas, are arranged in an arrow B direction (horizontal direction).
- the oxidant gas inlet communication hole 30a, the cooling medium inlet communication hole 32a, the fuel gas inlet communication hole 34a, the oxidant gas outlet communication hole 30b, the cooling medium outlet communication hole 32b, and the fuel gas outlet communication hole 34b include the frame portion 28a. , 28b, and the position of each is not limited.
- the frame portion 28a has an upper portion on the cathode surface (surface on which the cathode side electrode 24 is provided) 14a side of the first electrolyte membrane / electrode structure 14 below the oxidant gas inlet communication hole 30a.
- a plurality of inlet convex portions 36a and inlet groove portions 37a are provided in the vicinity.
- a plurality of inlet grooves 38a are provided in the upper part of the frame portion 28a on the cathode surface 14a side in the vicinity of the lower portion of the cooling medium inlet communication hole 32a and in the vicinity of the oxidant gas inlet communication hole 30a.
- a plurality of inlet holes 40a are formed through the vicinity of the lower part of the hole 32a and in the vicinity of the fuel gas inlet communication hole 34a.
- a plurality of outlet convex portions 36b and outlet groove portions 37b are provided in the vicinity of the upper portion of the oxidant gas outlet communication hole 30b.
- a plurality of outlet grooves 38b are provided in the lower part of the frame portion 28a on the cathode surface 14a side in the vicinity of the upper side of the cooling medium outlet communication hole 32b and close to the oxidant gas outlet communication hole 30b.
- a plurality of outlet holes 40b are formed penetratingly near the upper portion of the hole 32b and close to the fuel gas outlet communication hole 34b.
- the frame portion 28a has an upper portion on the anode surface (surface on which the anode-side electrode 26 is provided) 14b side of the first electrolyte membrane / electrode structure 14 in the vicinity below the cooling medium inlet communication hole 32a.
- a plurality of inlet grooves 42a are provided in the vicinity of the fuel gas inlet communication hole 34a.
- a plurality of inlet holes 40a are formed in the vicinity of the lower portion of the inlet groove 42a.
- the frame portion 28a is provided with a plurality of inlet grooves 46a located below the fuel gas inlet communication hole 34a.
- a plurality of outlet grooves 42b are provided in the vicinity of the upper portion of the cooling medium outlet communication hole 32b and close to the fuel gas outlet communication hole 34b.
- a plurality of outlet hole portions 40b are formed in the vicinity of the upper portion of the outlet groove portion 42b.
- the frame portion 28a is provided with a plurality of outlet groove portions 46b positioned above the fuel gas outlet communication hole 34b.
- the outer seal member (outer seal line) 48 and the inner seal member (inner seal line) 50 are formed integrally or separately on the anode surface 14b side of the frame portion 28a.
- Examples of the outer seal member 48 and the inner seal member 50 include EPDM, NBR, fluororubber, silicone rubber, fluorosilicone rubber, butyl rubber, natural rubber, styrene rubber, chloroprene or acrylic rubber, a cushion material, or An elastic seal such as a packing material is used.
- each sealing member demonstrated below is comprised similarly to said outer side sealing member 48 and inner side sealing member 50, The detailed description is abbreviate
- the outer seal member 48 includes an oxidant gas inlet communication hole 30a, a cooling medium inlet communication hole 32a, a fuel gas inlet communication hole 34a, an oxidant gas outlet communication hole 30b, which are all fluid communication holes from the outer peripheral edge of the frame portion 28a.
- the outer periphery of the cooling medium outlet communication hole 32b and the fuel gas outlet communication hole 34b and the outer periphery of the reaction surface (power generation surface) are circulated.
- the outer seal member 48 surrounds the cooling medium inlet communication hole 32a, the fuel gas inlet communication hole 34a, the cooling medium outlet communication hole 32b, and the fuel gas outlet communication hole 34b.
- the outer seal member 48 surrounds the inlet groove 42a and the inlet hole 40a integrally with the cooling medium inlet communication hole 32a, and surrounds the outlet groove 42b and the outlet hole 40b integrally with the cooling medium outlet communication hole 32b. .
- the inner seal member 50 is located inside the outer seal member 48 and integrally surrounds the anode side electrode 26, the inlet groove 46a, and the outlet groove 46b.
- the inner seal member 50 is provided along a contour line corresponding to the outer shape of the first separator 16 and is in contact with the entire outer peripheral edge surface (in the separator surface) of the first separator 16.
- the outer seal member 48 is disposed outside the outer peripheral end of the first separator 16 (outside the separator surface). All the fluid communication holes are circumferentially sealed by the outer seal member 48 and the inner seal member 50.
- a ring-shaped inlet seal member 52a surrounding the inlet hole 40a and a ring-shaped outlet seal member 52b surrounding the outlet hole 40b are provided on the cathode surface 14a side of the frame portion 28a. .
- the frame portion 28b has an upper portion on the cathode surface (surface on which the cathode side electrode 24 is provided) 18a side of the second electrolyte membrane / electrode structure 18 below the oxidant gas inlet communication hole 30a.
- a plurality of inlet convex portions 54a and a plurality of inlet groove portions 56a are provided in the vicinity.
- a plurality of inlet grooves 58a are provided in the upper part of the frame portion 28b on the cathode surface 18a side, near the lower portion of the cooling medium inlet communication hole 32a and close to the fuel gas inlet communication hole 34a, and the cooling medium inlet communication hole.
- a plurality of inlet holes 60a are formed near the lower portion of 32a and in the vicinity of the oxidant gas inlet communication hole 30a.
- the inlet hole 60a of the second electrolyte membrane / electrode structure 18 is arranged offset to a position where it does not overlap with the inlet hole 40a of the first electrolyte membrane / electrode structure 14 when viewed from the stacking direction.
- a plurality of inlet groove portions 62a are provided in the upper portion of the frame portion 28b on the cathode surface 18a side, near the lower portion of the fuel gas inlet communication hole 34a, and a plurality of inlet holes are formed at the lower end portion of the inlet groove portion 62a.
- a portion 64a is formed through. Below each inlet hole 64a, a plurality of inlet holes 66a are formed penetratingly spaced apart by a predetermined interval.
- a plurality of outlet groove portions 58b are provided in the lower portion of the frame portion 28b on the cathode surface 18a side in the vicinity of the upper portion of the cooling medium outlet communication hole 32b and close to the fuel gas outlet communication hole 34b, and the cooling medium outlet communication hole.
- a plurality of outlet holes 60b are formed in the vicinity of the upper part of 32b and in the vicinity of the oxidant gas outlet communication hole 30b.
- the outlet hole portion 60b of the second electrolyte membrane / electrode structure 18 is disposed offset to a position where it does not overlap with the outlet hole portion 40b of the first electrolyte membrane / electrode structure 14 when viewed from the stacking direction.
- a plurality of outlet groove portions 62b are provided in the lower portion of the frame portion 28b on the cathode surface 18a side, and are located in the vicinity of the upper portion of the fuel gas outlet communication hole 34b.
- a portion 64b is formed through.
- a plurality of outlet holes 66b are formed penetratingly spaced apart by a predetermined interval.
- the frame portion 28b has an upper portion on the anode surface (surface on which the anode-side electrode 26 is provided) 18b side of the second electrolyte membrane / electrode structure 18 and a lower vicinity of the cooling medium inlet communication hole 32a.
- a plurality of inlet grooves 68a are provided in the vicinity of the oxidant gas inlet communication hole 30a.
- a plurality of inlet holes 60a are formed in the vicinity of the lower portion of the inlet groove 68a.
- the frame portion 28b is provided with a plurality of inlet grooves 72a that are located below the fuel gas inlet communication hole 34a and communicate with the inlet holes 64a and 66a.
- a plurality of outlet grooves 68b are provided in the lower part of the frame portion 28b on the anode surface 18b side in the vicinity of the upper portion of the cooling medium outlet communication hole 32b and close to the oxidant gas outlet communication hole 30b.
- a plurality of outlet holes 60b are formed near the upper portion of the outlet groove 68b.
- a plurality of outlet groove portions 72b that are located above the fuel gas outlet communication hole 34b and communicate with the outlet hole portions 64b and 66b are provided.
- an outer seal member (outer seal line) 74 and an inner seal member (inner seal line) 76 are formed integrally or separately on the anode surface 18b side.
- the outer seal member 74 includes an oxidant gas inlet communication hole 30a, a cooling medium inlet communication hole 32a, a fuel gas inlet communication hole 34a, an oxidant gas outlet communication hole 30b, which are all fluid communication holes from the outer peripheral edge of the frame portion 28b.
- the outer periphery of the cooling medium outlet communication hole 32b and the fuel gas outlet communication hole 34b are circulated.
- the outer seal member 74 surrounds the cooling medium inlet communication hole 32a, the fuel gas inlet communication hole 34a, the cooling medium outlet communication hole 32b, and the fuel gas outlet communication hole 34b.
- the outer seal member 74 surrounds the inlet groove 68a and the inlet hole 60a integrally with the cooling medium inlet communication hole 32a, and surrounds the outlet groove 68b and the outlet hole 60b integrally with the cooling medium outlet communication hole 32b. .
- the inner seal member 76 is positioned inward of the outer seal member 74 and integrally surrounds the anode side electrode 26 and the inlet hole portions 64a and 66a, the inlet groove portion 72a, the outlet hole portions 64b and 66b, and the outlet groove portion 72b. .
- the inner seal member 76 is provided along a contour line corresponding to the outer shape of the second separator 20, and is in contact with the entire outer peripheral edge surface of the second separator 20.
- the outer seal member 74 is disposed outside the outer peripheral end of the second separator 20. All the fluid communication holes are hermetically sealed by the outer seal member 74 and the inner seal member 76.
- ring-shaped inlet seal members 78a and 80a surrounding the inlet holes 60a and 66a and ring-shaped outlet seals surrounding the outlet holes 60b and 66b.
- Members 78b and 80b are provided.
- the first and second separators 16 and 20 include an oxidant gas inlet communication hole 30a, a cooling medium inlet communication hole 32a, a fuel gas inlet communication hole 34a, an oxidant gas outlet communication hole 30b, a cooling medium outlet communication hole 32b, and a fuel gas.
- the dimension is set to be disposed inside the outlet communication hole 34b (all fluid communication holes).
- the first separator 16 includes two metal plates (for example, stainless steel plates) 82a and 82b having the same outer shape and stacked on each other, and the metal plates 82a and 82b are The outer peripheral edge portion is integrated by, for example, welding or adhesion to form an internal space that is sealed.
- an oxidant gas flow path 84 is formed facing the cathode side electrode 24, and in the metal plate 82b, a fuel gas flow path 86 is formed facing the anode side electrode 26.
- a cooling medium flow path 88 is formed between the metal plates 82a and 82b (internal space).
- the first separator 16 is provided with an oxidizing gas channel 84 having a plurality of channel grooves extending in the direction of arrow C (vertical direction) in the plane of the metal plate 82a.
- An inlet buffer portion 85 a and an outlet buffer portion 85 b are provided upstream and downstream of the oxidant gas flow path 84.
- a plurality of inlet grooves 87a are formed above the inlet buffer portion 85a and positioned below the oxidant gas inlet communication hole 30a.
- a plurality of outlet groove portions 87b are formed below the outlet buffer portion 85b and positioned above the oxidant gas outlet communication hole 30b.
- a plurality of holes 90a communicating with the plurality of inlet holes 60a of the second electrolyte membrane / electrode structure 18 and the inlet holes 66a of the second electrolyte membrane / electrode structure 18 are formed.
- a plurality of communicating holes 92a are formed.
- the hole 92 a is also formed in the metal plate 82 b and penetrates the first separator 16.
- a plurality of holes 90b communicating with the plurality of outlet holes 60b of the second electrolyte membrane / electrode structure 18 and the outlet holes 66b of the second electrolyte membrane / electrode structure 18 are provided.
- a plurality of communicating holes 92b are formed.
- the hole 92b is also formed in the metal plate 82b and penetrates the first separator 16.
- the first separator 16 includes an upper relief portion 94a for avoiding the inlet hole portion 40a of the first electrolyte membrane / electrode structure 14, and a lower portion for avoiding the outlet hole portion 40b of the first electrolyte membrane / electrode structure 14.
- An escape portion 94b is provided.
- the first separator 16 is provided with a fuel gas channel 86 having a plurality of channel grooves extending in the direction of arrow C (vertical direction) in the plane of the metal plate 82b.
- An inlet buffer portion 96 a and an outlet buffer portion 96 b are provided upstream and downstream of the fuel gas flow path 86.
- a plurality of inlet grooves 98a are formed below the oxidant gas inlet communication hole 30a, and a plurality of inlet grooves 100a are formed below the cooling medium inlet communication hole 32a.
- the inlet groove portion 100 a has a concavo-convex structure for forming a cooling medium passage inside the first separator 16.
- the outlet groove portion 100 b has a concavo-convex structure for forming a cooling medium passage inside the first separator 16.
- the second separator 20 includes two metal plates (for example, stainless steel plates) 102a and 102b having the same outer shape and stacked on each other, and the metal plates 102a and 102b are The outer peripheral edge is integrated by, for example, welding or adhesion, and the inside is sealed.
- an oxidant gas flow path 84 is formed facing the cathode side electrode 24, and in the metal plate 102b, a fuel gas flow path 86 is formed facing the anode side electrode 26.
- a cooling medium flow path 88 is formed between the metal plates 102a and 102b.
- the second separator 20 is provided with an oxidizing gas channel 84 having a plurality of channel grooves extending in the direction of arrow C (vertical direction) in the plane of the metal plate 102a.
- An inlet buffer 104a and an outlet buffer 104b are provided upstream and downstream of the oxidant gas flow path 84.
- a plurality of holes 106 a communicating with the plurality of inlet holes 40 a of the first electrolyte membrane / electrode structure 14 are formed above the metal plate 102 a.
- a plurality of holes 106b communicating with the plurality of outlet holes 40b of the first electrolyte membrane / electrode structure 14 are formed in the lower part of the metal plate 102a.
- the second separator 20 includes an upper escape portion 108a for avoiding the inlet hole 60a of the second electrolyte membrane / electrode structure 18 and a lower portion for avoiding the outlet hole 60b of the second electrolyte membrane / electrode structure 18.
- An escape portion 108b is provided.
- the second separator 20 is provided with a fuel gas channel 86 having a plurality of channel grooves extending in the direction of arrow C (vertical direction) in the plane of the metal plate 102b.
- An inlet buffer unit 110 a and an outlet buffer unit 110 b are provided upstream and downstream of the fuel gas channel 86.
- a plurality of inlet grooves 112a are formed in the upper part of the metal plate 102b below the cooling medium inlet communication hole 32a, while the lower part of the metal plate 102b is positioned above the cooling medium outlet communication hole 32b.
- a plurality of outlet groove portions 112b are formed.
- the inlet groove portion 112a and the outlet groove portion 112b have a concavo-convex structure for forming a cooling medium passage inside the second separator 20, respectively.
- the oxidant gas inlet communication hole 30a and the oxidant gas flow path 84 of the first electrolyte membrane / electrode structure 14 communicate with each other.
- An oxidant gas connection channel 113a, and an oxidant gas connection channel 113b communicating the oxidant gas inlet communication hole 30a and the oxidant gas channel 84 of the second electrolyte membrane / electrode structure 18 are formed.
- an oxidant gas connection channel that connects the oxidant gas outlet communication hole 30b and the oxidant gas channel 84 is similarly formed between the frame portions 28a and 28b.
- the oxidant gas connection channels 113a and 113b are disposed at different positions when the outer seal member 48 and the inner seal member 50 of the frame portion 28a and the outer seal member 74 and the inner seal member 76 of the frame portion 28b are viewed from the stacking direction. Is formed.
- the oxidant gas connection channel 113b is formed on the surface of the frame portion 28b, and has an inlet convex portion 54a extending along the separator surface direction, an inlet groove portion 56a formed in the frame portion 28b, and the first separator 16. And an inlet groove portion 87a that extends in the separator surface direction and communicates with the groove between the inlet convex portions 54a. The end portions of the inlet groove portion 56a and the inlet groove portion 87a communicate with each other.
- the oxidant gas connection channel 113a is formed on the surface of the frame portion 28a and has an inlet convex portion 36a extending along the separator surface direction and an inlet groove portion 37a.
- a fuel gas connection flow path 114 that connects the fuel gas inlet communication hole 34a and the fuel gas flow path 86 is formed between the frame portions 28a and 28b adjacent in the stacking direction.
- a fuel gas connection channel that connects the fuel gas outlet communication hole 34b and the fuel gas channel 86 is similarly formed between the frame portions 28a and 28b.
- the outer seal member 48 and the inner seal member 50 of the frame portion 28a, and the outer seal member 74 and the inner seal member 76 of the frame portion 28b are arranged at different positions when viewed from the stacking direction. It is formed by.
- the fuel gas connection channel 114 is formed in the frame portion 28 b of the second electrolyte membrane / electrode structure 18, and has inlet groove portions 62 a and 72 a extending along the separator surface direction, and the outer peripheral edge portion of the first separator 16. And a hole portion 92a penetrating in the stacking direction.
- the inlet groove 62 a may be provided in the frame portion 28 a of the first electrolyte membrane / electrode structure 14.
- the frame portion 28b is provided with an inlet hole portion (first through hole) 64a and an inlet hole portion (second through hole) 66a, and both sides of the frame portion 28b through the inlet hole portion 64a.
- the inlet groove portions 62a and 72a formed in communication with each other communicate with each other.
- the inlet hole 66a is disposed coaxially or offset in the stacking direction with respect to the hole 92a, and the inlet grooves 62a and 72a are connected to the fuel of the first separator 16 from the hole 92a via the inlet hole 66a.
- the gas channel (first reaction gas channel) 86 communicates.
- the inlet groove 72a communicates directly with the fuel gas flow path 86 of the second separator 20.
- a cooling medium connection flow path that connects the cooling medium inlet communication hole 32 a and the cooling medium flow path 88 of the second separator 20.
- a cooling medium connection flow path that connects the cooling medium outlet communication hole 32b and the cooling medium flow path 88 is formed between the frame portions 28a and 28b.
- the outer seal member 48 and the inner seal member 50 of the frame portion 28a and the outer seal member 74 and the inner seal member 76 of the frame portion 28b are arranged at different positions as viewed from the stacking direction. Is formed.
- the cooling medium connection channels 116a and 116b may be formed in one of the frame portions 28a or 28b.
- the cooling medium connection channel 116a includes inlet groove portions 42a and 58a provided along the separator surface direction, and an inlet hole portion (first hole portion) 40a formed in the frame portion 28a in the stacking direction. And a hole (second hole) 106a formed in the stacking direction in the metal plate 102a constituting the second separator 20.
- the end portions of the inlet groove portion 42a and the inlet groove portion 58a communicate with each other.
- the cooling medium connection channel 116b includes inlet groove portions 68a and 38a provided along the separator surface direction, and an inlet hole portion (first hole portion) 60a formed in the frame portion 28b in the stacking direction. And a hole (second hole) 90 a formed in the stacking direction in the metal plate 82 a constituting the first separator 16.
- the end portions of the inlet groove portion 68a and the inlet groove portion 38a communicate with each other.
- the entrance hole 40a and the hole 106a of the frame part 28a and the entrance hole 60a and the hole 90a of the frame part 28b are set at positions that do not overlap each other when viewed from the stacking direction.
- an oxidant gas such as an oxygen-containing gas is supplied to the oxidant gas inlet communication hole 30a, and a fuel gas such as a hydrogen-containing gas is supplied to the fuel gas inlet communication hole 34a.
- a cooling medium such as pure water or ethylene glycol is supplied to the cooling medium inlet communication hole 32a.
- each cell unit 12 as shown in FIGS. 1 and 11, the oxidant gas supplied to the oxidant gas inlet communication hole 30a passes between the inlet convex portion 36a of the first electrolyte membrane / electrode structure 14 and the second.
- the electrolyte membrane / electrode structure 18 is introduced into the inlet groove 56a from between the inlet convex portions 54a.
- the oxidant gas introduced into the inlet convex portion 36a is supplied to the oxidant gas flow path 84 of the second separator 20 through the inlet groove portion 37a. After the oxidant gas supplied to the oxidant gas flow path 84 is supplied to the cathode side electrode 24 of the first electrolyte membrane / electrode structure 14, the remaining oxidant gas is supplied from between the outlet convex parts 36b. It is discharged to the gas outlet communication hole 30b.
- the oxidant gas introduced between the inlet grooves 56 a passes through the inlet groove 87 a between the second electrolyte membrane / electrode structure 18 and the first separator 16, and the oxidant gas flow path of the first separator 16. 84. After the oxidant gas supplied to the oxidant gas channel 84 is supplied to the cathode electrode 24 of the second electrolyte membrane / electrode structure 18, the remaining oxidant gas is discharged from the outlet grooves 87b and 56b. The gas passes through the portion 54b and is discharged to the oxidant gas outlet communication hole 30b.
- the fuel gas supplied to the fuel gas inlet communication hole 34a is introduced into the inlet groove 62a of the second electrolyte membrane / electrode structure 18, as shown in FIGS.
- the fuel gas moves from the inlet groove 62a to the anode side through the inlet hole 64a, and a part of the fuel gas is supplied from the inlet groove 72a to the fuel gas flow path 86 of the second separator 20.
- the remaining portion of the fuel gas is introduced between the first separator 16 and the first electrolyte membrane / electrode structure 14 through the inlet hole 66 a and the hole 92 a of the first separator 16, and the first separator 16. Is supplied to the fuel gas passage 86.
- the spent fuel gas that has flowed through the fuel gas flow path 86 of the second separator 20 is discharged to the outlet groove 72b, and further discharged from the outlet hole 64b through the outlet groove 62b to the fuel gas outlet communication hole 34b.
- the spent fuel gas flowing through the fuel gas passage 86 of the first separator 16 is discharged from the hole 92b through the outlet hole 66b to the outlet groove 72b, and similarly discharged to the fuel gas outlet communication hole 34b. Is done.
- the electrode catalyst layer it is consumed by an electrochemical reaction to generate electricity.
- a part of the cooling medium supplied to the cooling medium inlet communication hole 32a is introduced into the inlet groove portion 42a of the first electrolyte membrane / electrode structure 14, and the inlet groove portion 58a.
- the cooling medium is introduced into the second separator 20 from the inlet hole 40 a through the hole 106 a of the second separator 20.
- the cooling medium flows through the second separator 20 along the inlet groove 112a, is supplied to the cooling medium flow path 88, and then is discharged from the second separator 20 from the outlet groove 112b through the hole 106b. Further, the cooling medium is discharged from the outlet hole 40b to the cooling medium outlet communication hole 32b through the outlet grooves 58b and 42b.
- the other part of the cooling medium supplied to the cooling medium inlet communication hole 32a is introduced into the inlet groove 68a of the second electrolyte membrane / electrode structure 18 as shown in FIGS. It is supplied from 38a to the inlet hole 60a.
- the cooling medium is introduced into the first separator 16 from the inlet hole 60 a through the hole 90 a of the first separator 16.
- the cooling medium flows through the first separator 16 along the inlet groove 100a, is supplied to the cooling medium flow path 88, and is then discharged from the first separator 16 through the outlet groove 100b through the hole 90b. Further, the cooling medium is discharged from the outlet hole 60b to the cooling medium outlet communication hole 32b through the outlet grooves 38b and 68b.
- the first electrolyte membrane / electrode structure 14 and the second electrolyte membrane / electrode structure 18 circulate in the cooling medium flow path 88 in the first separator 16 and the cooling medium flow path 88 in the second separator 20. It is cooled by the cooling medium.
- the frame portion 28a constituting the first electrolyte membrane / electrode structure 14 and the frame portion 28b constituting the second electrolyte membrane / electrode structure 18 are all fluid communication holes.
- the oxidant gas inlet communication hole 30a, the cooling medium inlet communication hole 32a, the fuel gas inlet communication hole 34a, the oxidant gas outlet communication hole 30b, the cooling medium outlet communication hole 32b, and the fuel gas outlet communication hole 34b penetrate in the stacking direction. Is formed.
- the first separator 16 and the second separator 20 can be set to external dimensions corresponding to the power generation region. . Therefore, the first separator 16 and the second separator 20 can be easily reduced in size and weight, and the manufacturing cost of the first separator 16 and the second separator 20 can be reduced.
- the first separator 16 and the second separator 20 can be efficiently manufactured, and the entire fuel cell 10 can be obtained economically.
- the sealing members are provided only on one side. For this reason, the size of the entire fuel cell 10 in the stacking direction is favorably shortened to achieve compactness.
- the first separator 16 includes two metal plates 82a and 82b having the same outer shape and stacked on each other, and the metal plates 82a and 82b have outer peripheral edges formed by, for example, welding or adhesion. It is integrated and the inside is sealed.
- the second separator 20 includes two metal plates 102a and 102b having the same outer shape and stacked on each other, and the metal plates 102a and 102b have outer peripheral edges, for example, welding or bonding. And the inside is hermetically sealed.
- the first separator 16 does not need a seal between the metal plates 82a and 82b, and the second separator 20 does not need a seal between the metal plates 102a and 102b. For this reason, in 1st Embodiment, the manufacturing cost of the 1st separator 16 and the 2nd separator 20 is reduced effectively, and the fuel cell 10 whole can be manufactured economically.
- the oxidizing gas inlet communication hole 30a and the oxidation of the second electrolyte membrane / electrode structure 18 are performed between the frame portions 28a and 28b adjacent in the stacking direction.
- An oxidant gas connection channel 113a that communicates with the oxidant gas channel 84, an oxidant gas that communicates the oxidant gas inlet communication hole 30a and the oxidant gas channel 84 of the first electrolyte membrane / electrode structure 14.
- a connection channel 113b is formed.
- the oxidant gas connection channels 113a and 113b are located at different positions when the outer seal member 48 and the inner seal member 50 of the frame portion 28a are different from the outer seal member 74 and the inner seal member 76 of the frame portion 28b when viewed from the stacking direction. It is formed by arrange
- the oxidant gas connection flow path 113a is formed on the surface of the frame portion 28b, and has an inlet protrusion 54a extending along the separator surface direction, and an inlet groove portion 56a formed in the frame portion 28b.
- the ends of 56a and the inlet groove 87a communicate with each other. Therefore, the configuration of the fuel cell 10 can be simplified, and the dimensions of the entire fuel cell 10 in the stacking direction can be shortened.
- the fuel gas connection flow that connects the fuel gas inlet communication hole 34a and the fuel gas flow path 86 between the frame portions 28a and 28b adjacent in the stacking direction.
- a path 114 is formed.
- the outer seal member 48 and the inner seal member 50 of the frame portion 28a and the outer seal member 74 and the inner seal member 76 of the frame portion 28b are arranged at different positions when viewed from the stacking direction. Is formed.
- the fuel gas connection channel 114 is formed in the frame portion 28 b of the second electrolyte membrane / electrode structure 18, and has inlet groove portions 62 a and 72 a extending along the separator surface direction, and the outer peripheral edge portion of the first separator 16. And a hole 92a penetrating in the stacking direction.
- the frame portion 28b is provided with an inlet hole portion 64a and an inlet hole portion 66a, and the inlet groove portions 62a and 72a formed on both surfaces of the frame portion 28b communicate with each other via the inlet hole portion 64a. is doing.
- the inlet hole 66a is coaxially arranged in the stacking direction with the hole 92a, and the inlet grooves 62a and 72a communicate with the fuel gas flow path 86 of the first separator 16 from the hole 92a via the inlet hole 66a.
- the inlet groove 72 a is in direct communication with the fuel gas flow path 86 of the second separator 20.
- the configuration of the fuel cell 10 can be simplified, and the dimensions of the entire fuel cell 10 in the stacking direction can be shortened.
- the cooling medium flow passage 88 of the cooling medium inlet communication hole 32 a and the second separator 20 is provided between the frame portions 28 a and 28 b adjacent in the stacking direction. Are formed, and a cooling medium connection channel 116b that connects the cooling medium inlet communication hole 32a and the cooling medium channel 88 of the first separator 16 is formed.
- the cooling medium connection channels 116a and 116b are located at different positions when the outer seal member 48 and the inner seal member 50 of the frame portion 28a are different from the outer seal member 74 and the inner seal member 76 of the frame portion 28b when viewed from the stacking direction. It is formed by arranging.
- the cooling medium connection channel 116a includes inlet groove portions 42a and 58a provided along the separator surface direction, and an inlet hole portion 40a formed in the frame portion 28a in the stacking direction.
- the metal plate 102a has a hole 106a formed in the stacking direction, and the inlet groove 42a and the inlet groove 58a communicate with each other at the ends.
- the cooling medium connection channel 116b includes inlet groove portions 68a and 38a provided along the separator surface direction, an inlet hole portion 60a formed in the stacking direction in the frame portion 28b, and a metal plate.
- 82a has a hole 90a formed in the stacking direction, and the inlet groove 68a and the inlet groove 38a communicate with each other at the ends.
- the inlet hole 40a and the hole 106a of the frame portion 28a and the inlet hole 60a and the hole 90a of the frame portion 28b are set at positions that do not overlap each other in the stacking direction. Therefore, the configuration of the fuel cell 10 can be simplified, and the dimensions of the entire fuel cell 10 in the stacking direction can be shortened.
- the oxidant gas may be circulated through the flow path structure for fuel gas, while the fuel gas may be circulated through the flow path structure for oxidant gas.
- a bridge portion having the same structure can be provided for both fuel gas and oxidant gas.
- FIG. 15 is an exploded perspective view of the fuel cell 120 according to the second embodiment of the present invention.
- the same components as those of the fuel cell 10 according to the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. Similarly, in the third and subsequent embodiments described below, detailed description thereof is omitted.
- the fuel cell 120 is configured by stacking a plurality of cell units 122, and the cell unit 122 includes a first electrolyte membrane / electrode structure (electrolyte / electrode structure). (MEA) 124, first separator 126, second electrolyte membrane / electrode structure (electrolyte / electrode structure) (MEA) 128, and second separator 130.
- MEA electrolyte membrane / electrode structure
- the first electrolyte membrane / electrode structure 124 and the second electrolyte membrane / electrode structure 128 are provided with a frame portion 132a and a frame portion 132b. As shown in FIG. 17, the upper portion of the frame portion 132a on the cathode surface 124a side is not provided with an inlet groove 38a in the vicinity of the lower portion of the cooling medium inlet communication hole 32a, and extends across the width direction of the cooling medium inlet communication hole 32a. A plurality of inlet holes 134a are formed. The inlet hole 134a is surrounded by a ring-shaped inlet seal member 136a.
- no outlet groove 38b is provided near the upper part of the cooling medium outlet communication hole 32b, and a plurality of outlet hole parts 134b are formed across the width direction of the cooling medium outlet communication hole 32b. It is formed.
- the outlet hole 134b is surrounded by a ring-shaped outlet seal member 136b.
- a plurality of inlet grooves 138a corresponding to the plurality of inlet holes 134a are provided on the upper portion of the frame portion 132a on the anode surface 124b side, while a plurality of inlet grooves 124a are provided on the lower portion on the anode surface 124b side.
- a plurality of outlet groove portions 138b corresponding to the outlet hole portions 134b are provided.
- the inlet hole 60a is not provided near the lower portion of the cooling medium inlet communication hole 32a, and the width direction of the cooling medium inlet communication hole 32a is not provided.
- a plurality of inlet grooves 140a are formed.
- the outlet hole portion 60b is not provided near the upper portion of the cooling medium outlet communication hole 32b, and a plurality of outlet groove portions 140b are formed across the width direction of the cooling medium outlet communication hole 32b. It is formed.
- the inlet groove 68a and the outlet groove 68b are not provided on the anode surface 128b side of the frame portion 132b.
- the first separator 126 is composed of a single metal plate member. As shown in FIG. 21, a plurality of hole portions 92a and a plurality of inlet groove portions 87a are formed above the oxidant gas flow path 84 provided on one surface of the first separator 126, while the hole portion 90a. Is not provided. A plurality of hole portions 92b and a plurality of outlet groove portions 87b are formed below the oxidant gas flow path 84, but the hole portion 90b is not provided.
- a plurality of inlet grooves 98a are provided above the fuel gas flow path 86 provided on the other surface of the first separator 126, while the inlet grooves 100a are not provided.
- a plurality of outlet groove portions 98b are provided below the fuel gas passage 86, but the outlet groove portions 100b are not provided.
- the second separator 130 includes two metal plates (for example, stainless steel plates) 142a and 142b having the same outer shape and stacked on each other, and the metal plates 142a and 142b are The outer peripheral edge is integrated by, for example, welding or adhesion, and the inside is sealed.
- an oxidant gas flow path 84 is formed facing the cathode side electrode 24, and in the metal plate 142b, a fuel gas flow path 86 is formed facing the anode side electrode 26.
- a cooling medium flow path 88 is formed between the metal plates 142a and 142b.
- a plurality of holes 144a are formed above the metal plate 142a below the cooling medium inlet communication hole 32a over the width direction of the cooling medium inlet communication hole 32a.
- a plurality of holes 144b are formed above the cooling medium outlet communication hole 32b over the width direction of the cooling medium outlet communication hole 32b.
- a plurality of inlet grooves 146a are formed above the metal plate 142b below the cooling medium inlet communication hole 32a across the width direction of the cooling medium inlet communication hole 32a.
- a plurality of outlet grooves 146b are formed over the cooling medium outlet communication hole 32b over the width direction of the cooling medium outlet communication hole 32b.
- the oxidant gas inlet communication hole 30a and the oxidant gas flow path 84 of the first electrolyte membrane / electrode structure 124 communicate with each other.
- An oxidant gas connection flow path 150a and an oxidant gas connection flow path 150b communicating the oxidant gas inlet communication hole 30a and the oxidant gas flow path 84 of the second electrolyte membrane / electrode structure 128 are formed.
- an oxidant gas connection channel that connects the oxidant gas outlet communication hole 30b and the oxidant gas channel 84 is similarly formed between the frame portions 132a and 132b.
- the oxidant gas connection channels 150a and 150b are disposed at different positions when the outer seal member 48 and the inner seal member 50 of the frame portion 132a and the outer seal member 74 and the inner seal member 76 of the frame portion 132b are viewed from the stacking direction. Is formed.
- the oxidant gas connection channel 150b is formed on the surface of the frame portion 132b, and has an inlet convex portion (first groove portion) 54a extending along the separator surface direction, and an inlet groove portion formed on the surface of the frame portion 132b. 56a and an inlet groove portion (second groove portion) 87a formed on the surface of the first separator 126 and communicating with the groove between the inlet convex portions 54a and extending along the separator surface direction. The end portions of the inlet groove portion 56a and the inlet groove portion 87a communicate with each other.
- the oxidant gas connection channel 150a is formed on the surface of the frame portion 132a, and has an inlet convex portion 36a provided along the separator surface direction, and an inlet groove portion 37a.
- a fuel gas connection channel 152 that connects the fuel gas inlet communication hole 34a and the fuel gas channel 86 is formed between the frame portions 132a and 132b adjacent in the stacking direction.
- a fuel gas connection channel that connects the fuel gas outlet communication hole 34b and the fuel gas channel 86 is similarly formed between the frame portions 132a and 132b.
- the outer seal member 48 and the inner seal member 50 of the frame portion 132a, and the outer seal member 74 and the inner seal member 76 of the frame portion 132b are arranged at different positions when viewed from the stacking direction. It is formed by.
- the fuel gas connection channel 152 is formed in the frame portion 132b of the second electrolyte membrane / electrode structure 128, and has inlet groove portions 62a and 72a extending along the separator surface direction and the outer peripheral edge portion of the first separator 126. And a hole 92a penetrating in the stacking direction.
- the inlet groove 62 a may be formed in the frame portion 132 a of the first electrolyte membrane / electrode structure 124.
- the frame portion 132b is provided with an inlet hole portion 64a and an inlet hole portion 66a, and inlet groove portions 62a and 72a formed on both surfaces of the frame portion 132b communicate with each other via the inlet hole portion 64a.
- the inlet hole 66a is disposed coaxially or offset in the stacking direction with respect to the hole 92a, and the inlet grooves 62a and 72a are connected to the fuel of the first separator 126 from the hole 92a through the inlet hole 66a. It communicates with the gas flow path 86.
- the inlet groove 72 a communicates directly with the fuel gas flow path 86 of the second separator 130.
- a cooling medium connection channel 154 that connects the cooling medium inlet communication hole 32a and the cooling medium channel 88 of the second separator 130 is formed. Is done.
- a cooling medium connection channel that connects the cooling medium outlet communication hole 32b and the cooling medium channel 88 is similarly formed between the frame portions 132a and 132b.
- the outer seal member 48 and the inner seal member 50 of the frame portion 132a and the outer seal member 74 and the inner seal member 76 of the frame portion 132b are arranged at different positions when viewed from the stacking direction. It is formed by.
- the cooling medium connection channel 154 includes inlet grooves 138a and 140a provided along the separator surface direction, inlet holes (first holes) 134a formed in the stacking direction in the frame portion 132a, and the metal plate 142a. And a hole (second hole) 144a formed in the stacking direction.
- the end portions of the inlet groove portion 138a and the inlet groove portion 140a communicate with each other.
- the operation of the fuel cell 120 will be schematically described below.
- each cell unit 122 as shown in FIGS. 15 and 25, the oxidant gas supplied to the oxidant gas inlet communication hole 30a passes between the inlet convex portion 36a of the first electrolyte membrane / electrode structure 124 and the second.
- the electrolyte membrane / electrode structure 128 is introduced into the inlet groove portion 56a from between the inlet convex portions 54a.
- the oxidant gas introduced into the inlet convex part 36a is supplied to the oxidant gas flow path 84 of the second separator 130 through the inlet groove part 37a. After the oxidant gas supplied to the oxidant gas flow path 84 is supplied to the cathode side electrode 24 of the first electrolyte membrane / electrode structure 124, the remaining oxidant gas passes through between the outlet convex portions 36b. It is discharged to the gas outlet communication hole 30b.
- the oxidant gas introduced between the inlet grooves 56 a passes through the inlet groove 87 a between the second electrolyte membrane / electrode structure 128 and the first separator 126, and the oxidant gas flow path of the first separator 126. 84.
- the oxidant gas supplied to the oxidant gas flow path 84 is supplied to the cathode electrode 24 of the second electrolyte membrane / electrode structure 128, the remaining oxidant gas is discharged from the outlet grooves 87b and 56b.
- the gas passes through the portion 54b and is discharged to the oxidant gas outlet communication hole 30b.
- the fuel gas supplied to the fuel gas inlet communication hole 34a is introduced into the inlet groove 62a of the second electrolyte membrane / electrode structure 128 as shown in FIGS.
- the fuel gas moves from the inlet groove 62a to the anode side through the inlet hole 64a, and a part thereof is supplied from the inlet groove 72a to the fuel gas flow path 86 of the second separator 130.
- the remaining portion of the fuel gas is introduced between the first separator 126 and the first electrolyte membrane / electrode structure 124 through the inlet hole 66 a and the hole 92 a of the first separator 126, and the first separator 126. Is supplied to the fuel gas passage 86.
- the spent fuel gas that has flowed through the fuel gas flow path 86 of the second separator 130 is discharged to the outlet groove 72b, and further discharged from the outlet hole 64b through the outlet groove 62b to the fuel gas outlet communication hole 34b.
- the spent fuel gas flowing through the fuel gas flow path 86 of the first separator 126 is discharged from the hole 92b through the outlet hole 66b to the outlet groove 72b, and similarly discharged to the fuel gas outlet communication hole 34b. Is done.
- the electrode catalyst layer it is consumed by an electrochemical reaction to generate electricity.
- the cooling medium supplied to the cooling medium inlet communication hole 32a is introduced into the inlet groove 138a of the first electrolyte membrane / electrode structure 124, and is then introduced from the inlet groove 140a. Supplied to the unit 134a.
- the cooling medium is introduced into the second separator 130 from the inlet hole 134 a through the hole 144 a of the second separator 130.
- the cooling medium flows through the second separator 130 along the inlet groove 146a, is supplied to the cooling medium flow path 88, and then is discharged from the second separator 130 from the outlet groove 146b through the hole 144b. Further, the cooling medium is discharged from the outlet hole part 134b to the cooling medium outlet communication hole 32b through the outlet groove parts 140b and 138b.
- first electrolyte membrane / electrode structure 124 and the second electrolyte membrane / electrode structure 128 are thinned and cooled by the cooling medium flowing through the cooling medium flow path 88 in the second separator 130.
- the first separator 126 and the second separator 130 can be easily reduced in size and weight, the manufacturing cost can be effectively reduced, and the entire fuel cell 120 can be manufactured economically.
- the same effect as the first embodiment can be obtained.
- FIG. 28 is an exploded perspective view of a fuel cell 160 according to the third embodiment of the present invention.
- the cell unit 162 includes the first electrolyte membrane / electrode structure 14, the first separator 164, the second electrolyte membrane / electrode structure 18, and the second separator. 20.
- the first separator 164 includes two metal plates 82a and 82b. The metal plates 82a and 82b circulate around the outer peripheral edges, and are integrated and sealed, for example, by welding or adhesion. Form.
- a plurality of holes 92a and 92b are formed through the metal plates 82a and 82b. Between the two metal plates 82a and 82b, the holes 92a and 92b are circulated so that the metal plates 82a and 82b are integrated with each other by, for example, welding or bonding. Junction portions 166a and 166b that close from the space (cooling medium flow path 88) are provided.
- the same effect as in the first and second embodiments can be obtained.
- the joint portions 166a and 166b that surround and close the holes 92a and 92b are provided, the fuel gas enters between the metal plates 82a and 82b (inside the first separator 164) from the holes 92a and 92b. Can be prevented as much as possible.
- FIG. 31 is an explanatory cross-sectional view of a fuel cell 170 according to a fourth embodiment of the present invention.
- the first separator 16 is not provided with the inlet groove 87a and the outlet groove 87b. For this reason, the structure of the 1st separator 16 is simplified especially and it is economical.
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Abstract
Description
Claims (21)
- 電解質(22)の両側に一対の電極(24、26)を配設した電解質・電極構造体(14、18)を、第1セパレータ(16)及び第2セパレータ(20)で挟持するセルユニット(12)を備える燃料電池であって、
前記電解質・電極構造体(14、18)の外周には、高分子材料で形成される枠部材(28a、28b)が一体に設けられ、前記枠部材(28a、28b)には、反応ガス入口連通孔(30a、34a)、反応ガス出口連通孔(30b、34b)、冷却媒体入口連通孔(32a)及び冷却媒体出口連通孔(32b)を含む流体連通孔が積層方向に貫通して形成されるとともに、前記積層方向に隣接する前記枠部材(28a、28b)間には、前記流体連通孔及び反応面外周を周回して密封するシール部材(48、50)が介装され、
少なくとも前記第1セパレータ(16)又は前記第2セパレータ(20)は、外形が同一形状を有して互いに接合される2枚のプレート(82a、82b)を備えるとともに、
前記第1セパレータ(16)及び前記第2セパレータ(20)の外周端は、前記流体連通孔よりも内側に配置されることを特徴とする燃料電池。 - 請求項1記載の燃料電池において、前記第1セパレータ(16)及び前記第2セパレータ(20)の外周端縁面に接する内側シールライン(50)と、
前記第1セパレータ(16)及び前記第2セパレータ(20)の外周端外方に配置される外側シールライン(48)と、
を設けることを特徴とする燃料電池。 - 請求項1又は2記載の燃料電池において、前記セルユニット(12)は、第1の前記電解質・電極構造体(14)、前記第1セパレータ(16)、第2の前記電解質・電極構造体(18)及び前記第2セパレータ(20)を備え、
前記第1セパレータ(16)及び前記第2セパレータ(20)は、それぞれ2枚の前記プレート(82a、82b、102a、102b)を接合して構成されるとともに、
2枚の前記プレート(82a、82b、102a、102b)間には、冷却媒体をセパレータ面方向に流通させる冷却媒体流路(88)が形成されることを特徴とする燃料電池。 - 請求項1又は2記載の燃料電池において、前記セルユニット(122)は、第1の前記電解質・電極構造体(124)、前記第1セパレータ(126)、第2の前記電解質・電極構造体(128)及び前記第2セパレータ(130)を備え、
前記第1セパレータ(126)は、一方の面側に一方の反応ガスである燃料ガスをセパレータ面方向に流通させる燃料ガス流路(86)が形成され、且つ他方の面側に他方の反応ガスである酸化剤ガスをセパレータ面方向に流通させる酸化剤ガス流路(84)が形成される単一のプレート部材で構成され、
前記第2セパレータ(130)は、2枚の前記プレート(142a、142b)を接合して構成されるとともに、
2枚の前記プレート(142a、142b)間には、冷却媒体をセパレータ面方向に流通させる冷却媒体流路(88)が形成されることを特徴とする燃料電池。 - 電解質(22)の両側に一対の電極(24、26)を配設した電解質・電極構造体(14、18)を、第1セパレータ(16)及び第2セパレータ(20)で挟持するセルユニット(12)を備える燃料電池であって、
前記電解質・電極構造体(14、18)の外周には、高分子材料で形成される枠部材(28a、28b)が一体に設けられ、前記枠部材(28a、28b)には、反応ガス入口連通孔(30a、34a)、反応ガス出口連通孔(30b、34b)、冷却媒体入口連通孔(32a)及び冷却媒体出口連通孔(32b)を含む流体連通孔が積層方向に貫通して形成されるとともに、前記積層方向に隣接する前記枠部材(28a、28b)間には、前記流体連通孔及び反応面外周を周回して密封するシール部材(48、50)が介装され、
前記第1セパレータ(16)及び前記第2セパレータ(20)の外周端は、前記流体連通孔よりも内側に配置され、且つ、前記第1セパレータ(16)及び前記第2セパレータ(20)には、前記電解質・電極構造体(14、18)を挟んでそれぞれ異なる反応ガスをセパレータ面方向に流通させる第1反応ガス流路(84)及び第2反応ガス流路(86)が形成される一方、
前記反応ガス入口連通孔(30a)及び前記反応ガス出口連通孔(30b)と前記第1反応ガス流路(84)とを連通する連結流路(113a、113b)が形成されるとともに、
前記連結流路(113b)は、前記枠部材(28b)の表面に形成され、前記セパレータ面方向に沿って延在する溝部(56a)を有することを特徴とする燃料電池。 - 請求項5記載の燃料電池において、前記第1セパレータ(16)の表面には、前記溝部(56a)に連通して前記セパレータ面方向に沿って延在する溝部(87a)が設けられることを特徴とする燃料電池。
- 請求項5又は6記載の燃料電池において、前記枠部材(28a、28b)は、セパレータ面外に外側シールライン(48、74)を有し且つセパレータ面内に内側シールライン(50、76)を有する2重シールラインを設けるとともに、
互いに隣接する一方の前記枠部材(28a)の前記2重シールラインの一部と他方の前記枠部材(28b)の前記2重シールラインの一部とは、前記積層方向から見て異なる位置に配置されることにより、前記連結流路(113a、113b)を形成することを特徴とする燃料電池。 - 請求項5記載の燃料電池において、少なくとも前記第1セパレータ(16)又は前記第2セパレータ(20)は、同一外形形状を有する2枚のプレート(82a、82b)を接合して構成されるとともに、
2枚の前記プレート(82a、82b)間には、冷却媒体流路(88)が形成されることを特徴とする燃料電池。 - 電解質(20)の両側に一対の電極(24、26)を配設した電解質・電極構造体(14、18)を、第1セパレータ(16)及び第2セパレータ(20)で挟持するセルユニット(12)を備える燃料電池であって、
前記電解質・電極構造体(14、18)の外周には、高分子材料で形成される枠部材(28a、28b)が一体に設けられ、前記枠部材(28a、28b)には、反応ガス入口連通孔(30a、34a)、反応ガス出口連通孔(30b、34b)、冷却媒体入口連通孔(32a)及び冷却媒体出口連通孔(32b)を含む流体連通孔が積層方向に貫通して形成されるとともに、前記積層方向に隣接する前記枠部材(28a、28b)間には、前記流体連通孔及び反応面外周を周回して密封するシール部材(48、50)が介装され、
前記第1セパレータ(16)及び前記第2セパレータ(20)の外周端は、前記流体連通孔よりも内側に配置され、且つ、前記第1セパレータ(16)及び前記第2セパレータ(20)には、前記電解質・電極構造体(14、18)を挟んでそれぞれ異なる反応ガスをセパレータ面方向に流通させる第1反応ガス流路(86)及び第2反応ガス流路(84)が形成される一方、
前記反応ガス入口連通孔(34a)及び前記反応ガス出口連通孔(34b)と前記第1反応ガス流路(86)とを連通する連結流路(114)が形成されるとともに、
前記連結流路(114)は、前記枠部材(28b)に形成され、前記セパレータ面方向に沿って延在する溝部(62a、72a)と、
前記溝部(62a、72a)に連通し、前記第1セパレータ(16)又は前記第2セパレータ(20)を前記積層方向に貫通する孔部(92a)と、
を有することを特徴とする燃料電池。 - 請求項9記載の燃料電池において、前記枠部材(28a、28b)は、セパレータ面外に外側シールライン(48、74)を有し且つセパレータ面内に内側シールライン(50、76)を有する2重シールラインを設けるとともに、
互いに隣接する一方の前記枠部材(28b)の前記2重シールラインの一部と他方の前記枠部材(28a)の前記2重シールラインの一部とは、前記積層方向から見て異なる位置に配置されることにより、前記連結流路(114)を形成することを特徴とする燃料電池。 - 請求項9又は10記載の燃料電池において、一方の前記枠部材(28b)に前記溝部(62a、72a)、第1貫通孔(64a)及び第2貫通孔(66a)が設けられ、
前記第1貫通孔(64a)を介して一方の前記枠部材(28b)の両面に形成された前記溝部(62a、72a)が互いに連通するとともに、
前記第2貫通孔(66a)を介して前記溝部(62a、72a)が前記孔部(92a)から前記第1反応ガス流路(86)に連通することを特徴とする燃料電池。 - 請求項11記載の燃料電池において、前記セルユニット(12)は、第1の前記電解質・電極構造体(14)、前記第1セパレータ(16)、第2の前記電解質・電極構造体(18)及び前記第2セパレータ(20)を備え、
第2の前記電解質・電極構造体(18)の前記枠部材(28b)に前記溝部(62a、72a)、前記第1貫通孔(64a)及び前記第2貫通孔(66a)が形成されるとともに、
前記溝部(62a、72a)は、前記第2貫通孔(66a)を介して前記第1セパレータ(16)に形成された前記孔部(92a)から該第1セパレータ(16)の前記第1反応ガス流路(86)に連通する一方、
前記溝部(62a、72a)は、前記第2セパレータ(20)の前記第1反応ガス流路(86)に直接連通することを特徴とする燃料電池。 - 請求項9記載の燃料電池において、少なくとも前記第1セパレータ(16)又は前記第2セパレータ(20)は、外形が同一形状を有する2枚のプレート(82a、82b)を接合して構成されるとともに、
2枚の前記プレート(82a、82b)間には、冷却媒体流路(88)が形成されることを特徴とする燃料電池。 - 請求項13記載の燃料電池において、2枚の前記プレート(82a、82b)は、外周縁部同士を周回して接合することにより、内部空間を形成するとともに、
前記連結流路(114)を構成する前記孔部(92a)を周回して2枚の前記プレート(82a、82b)同士を接合することにより、前記孔部(92a)を前記内部空間から閉塞する接合部(166a)が設けられることを特徴とする燃料電池。 - 電解質(22)の両側に一対の電極(24、26)を配設した電解質・電極構造体(14、18)を、第1セパレータ(16)及び第2セパレータ(20)で挟持するセルユニット(12)を備える燃料電池であって、
前記電解質・電極構造体(14、18)の外周には、高分子材料で形成される枠部材(28a、28b)が一体に設けられ、前記枠部材(28a、28b)には、反応ガス入口連通孔(30a、34a)、反応ガス出口連通孔(30b、34b)、冷却媒体入口連通孔(32a)及び冷却媒体出口連通孔(32b)を含む流体連通孔が積層方向に貫通して形成される一方、
前記第1セパレータ(16)及び前記第2セパレータ(20)の外周端は、前記流体連通孔よりも内側に配置されるとともに、少なくとも前記第1セパレータ(16)又は前記第2セパレータ(20)は、内部に冷却媒体をセパレータ面方向に流通させる冷却媒体流路(88)が形成される2枚のプレート(102a、102b)を備え、
前記積層方向に隣接する前記枠部材(28a、28b)間には、前記流体連通孔及び反応面外周を周回して密封するシール部材(48、50)が介装され、且つ、前記冷却媒体入口連通孔(32a)及び前記冷却媒体出口連通孔(32b)と前記冷却媒体流路(88)とを連通する連結流路(116a)が形成されることを特徴とする燃料電池。 - 請求項15記載の燃料電池において、前記枠部材(28a、28b)は、セパレータ面外に外側シールライン(48、74)を有し且つセパレータ面内に内側シールライン(50、76)を有する2重シールラインを設けるとともに、
互いに隣接する一方の前記枠部材(28a)の前記2重シールラインの一部と他方の前記枠部材(28b)の前記2重シールラインの一部とは、前記積層方向から見て異なる位置に配置されることにより、一方の前記枠部材(28a)と他方の前記枠部材(28b)との間に前記連結流路(116a)を形成することを特徴とする燃料電池。 - 請求項15又は16記載の燃料電池において、2枚の前記プレート(102a、102b)は、互いに外形が同一形状を有することを特徴とする燃料電池。
- 請求項15記載の燃料電池において、前記連結流路(116a)は、前記積層方向に隣接する前記枠部材(28a、28b)間に前記セパレータ面方向に沿って設けられる溝部(58a)と、
一方の前記枠部材(28a)に前記積層方向に形成され、前記溝部(58a)に連通する第1孔部(40a)と、
一方の前記枠部材(28a)に隣接する一方の前記プレート(102a)に前記積層方向に形成され、前記第1孔部(40a)と前記冷却媒体流路(88)とを連通する第2孔部(106a)と、
を有することを特徴とする燃料電池。 - 請求項18記載の燃料電池において、前記溝部は、一方の前記枠部材(28a)に設けられる第1溝部(42a)と、
一方の前記枠部材(28a)に積層される他方の前記枠部材(28b)に設けられる第2溝部(58a)と、
を有するとともに、
前記第1溝部(42a)と前記第2溝部(58a)とは、端部同士が連通することを特徴とする燃料電池。 - 請求項18記載の燃料電池において、一方の前記枠部材(28a)と一方の前記プレート(102a)との間には、前記第1孔部(40a)を周回するシール部材(52a)が介装されることを特徴とする燃料電池。
- 請求項18記載の燃料電池において、互いに隣接する前記枠部材(28a、28b)の前記第1孔部(40a、60a)同士及び前記第2孔部(90a、106a)同士は、前記積層方向から見て対して互いに重なり合わない位置に設定されることを特徴とする燃料電池。
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JP5227543B2 (ja) * | 2007-06-28 | 2013-07-03 | 本田技研工業株式会社 | 燃料電池 |
JP5438918B2 (ja) * | 2008-05-22 | 2014-03-12 | 本田技研工業株式会社 | 燃料電池用電解質・電極構造体及び燃料電池 |
KR100949423B1 (ko) * | 2008-05-28 | 2010-03-24 | 파나소닉 주식회사 | 연료전지 |
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2011
- 2011-09-05 JP JP2012539637A patent/JP5543610B2/ja not_active Expired - Fee Related
- 2011-09-05 WO PCT/JP2011/070130 patent/WO2012053288A1/ja active Application Filing
- 2011-09-05 CN CN201180050089.7A patent/CN103168382B/zh active Active
- 2011-09-05 CA CA2815344A patent/CA2815344C/en active Active
- 2011-09-05 EP EP11834130.4A patent/EP2631976B1/en not_active Not-in-force
- 2011-09-05 US US13/880,919 patent/US9660276B2/en active Active
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JPH08222237A (ja) | 1995-02-14 | 1996-08-30 | Aisin Aw Co Ltd | 燃料電池用セパレータ |
JP2003197221A (ja) * | 2001-12-26 | 2003-07-11 | Honda Motor Co Ltd | 燃料電池 |
JP2009009838A (ja) * | 2007-06-28 | 2009-01-15 | Honda Motor Co Ltd | 燃料電池 |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103427097A (zh) * | 2012-05-25 | 2013-12-04 | 本田技研工业株式会社 | 燃料电池 |
JP2013258107A (ja) * | 2012-06-14 | 2013-12-26 | Honda Motor Co Ltd | 燃料電池 |
JP2018092773A (ja) * | 2016-12-01 | 2018-06-14 | トヨタ自動車株式会社 | 燃料電池の製造方法 |
US10615430B2 (en) | 2017-10-11 | 2020-04-07 | Honda Motor Co., Ltd. | Joint separator for fuel cell, and fuel cell stack |
Also Published As
Publication number | Publication date |
---|---|
CN103168382B (zh) | 2015-12-02 |
JP5543610B2 (ja) | 2014-07-09 |
CA2815344C (en) | 2016-06-07 |
CA2815344A1 (en) | 2012-04-26 |
JPWO2012053288A1 (ja) | 2014-02-24 |
US9660276B2 (en) | 2017-05-23 |
US20130209909A1 (en) | 2013-08-15 |
CN103168382A (zh) | 2013-06-19 |
EP2631976A1 (en) | 2013-08-28 |
EP2631976A4 (en) | 2014-08-20 |
EP2631976B1 (en) | 2016-05-25 |
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