WO2012073364A1 - 燃料電池モジュール - Google Patents
燃料電池モジュール Download PDFInfo
- Publication number
- WO2012073364A1 WO2012073364A1 PCT/JP2010/071567 JP2010071567W WO2012073364A1 WO 2012073364 A1 WO2012073364 A1 WO 2012073364A1 JP 2010071567 W JP2010071567 W JP 2010071567W WO 2012073364 A1 WO2012073364 A1 WO 2012073364A1
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- WIPO (PCT)
- Prior art keywords
- separator
- deep groove
- groove portion
- disposed
- fuel cell
- Prior art date
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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
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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
- H01M8/0202—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
- H01M8/026—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant characterised by grooves, e.g. their pitch or depth
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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
- 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
- H01M8/04—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
- H01M8/24—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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- 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
- H01M8/10—Fuel cells with solid electrolytes
- H01M2008/1095—Fuel cells with polymeric 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
- H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
- H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
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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
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells
Definitions
- the present invention relates to a fuel cell module having a plurality of fuel cells.
- a fuel cell In a fuel cell, electrical energy generated in a structure including an electrolyte and a pair of electrodes (anode and cathode) disposed so as to sandwich the electrolyte is collected in a current collector (outside of the structure) (for example, it is taken out through a separator.
- a polymer electrolyte fuel cell hereinafter, sometimes referred to as “PEFC”
- PEFC has attracted attention as a power source for electric vehicles, mobile phones, and the like because it exhibits high energy conversion efficiency, has a short start-up time, and is small and lightweight.
- the PEFC single cell includes an electrolyte membrane, a cathode and an anode including at least a catalyst layer, and has a theoretical electromotive force of 1.23V.
- a hydrogen-containing gas is supplied to the anode, and an oxygen-containing gas is supplied to the cathode.
- the hydrogen supplied to the anode is separated into protons and electrons on the catalyst contained in the catalyst layer of the anode (hereinafter referred to as “anode catalyst layer”), and the protons generated from the hydrogen are separated from the anode catalyst layer and the electrolyte. It reaches the cathode catalyst layer (hereinafter referred to as “cathode catalyst layer”) through the membrane.
- Patent Document 1 As a technique related to such a fuel cell, for example, in Patent Document 1, a plurality of fuel cells are stacked, and a plurality of stacked membrane electrode assemblies and gaskets integrally formed on the periphery of the porous body are formed.
- a fuel cell module is disclosed in which a single laminated body composed of fuel cells is formed and a plurality of laminated bodies are laminated.
- a plurality of manifolds are formed in a fuel cell, separators are disposed at both ends of the stacked body, and the manifolds are surrounded between the separators of adjacent stacked bodies.
- a form in which an endless first sealing material is interposed is disclosed.
- Patent Document 1 endless concave grooves are formed at the corresponding positions on the opposing surfaces of the separators of the adjacent laminated bodies around the manifolds, and the adjacent laminated bodies are separated from each other. Also disclosed is a form in which a part or all of the first sealing material is accommodated in an endless space defined by both concave grooves in a stacked posture.
- Patent Document 2 includes at least first and second electrolyte / electrode structures in which a pair of electrodes are disposed on both sides of an electrolyte, and includes a first metal separator, a first electrolyte / electrode structure, and a second electrode.
- a fuel cell including a plurality of power generation units laminated in the order of a metal separator, a second electrolyte / electrode structure, and a third metal separator, and a cooling medium flow path through which a cooling medium flows between the power generation units.
- the first separator has a smaller outer dimension than the second separator, and the outer peripheral edge of the second separator is at a position protruding outward from the outer edge of the first separator.
- a fuel cell is disclosed in which fluid communication holes including at least a fuel gas inlet communication hole, a fuel gas outlet communication hole, an oxidant gas inlet communication hole, and an oxidant gas outlet communication hole penetrate in the stacking direction.
- Patent Document 4 a gas introduction manifold is provided, and a gas flow path penetrating in a strip shape is provided on the battery side surface over the electrode area, and is opposite to the battery side surface.
- a small fuel cell separator in which a gas groove for introducing gas is formed so as to connect the manifold and the gas channel, and an O-ring groove is formed so as to surround the gas channel and the gas groove.
- an object of the present invention is to provide a fuel cell module capable of easily ensuring an appropriate sealing function even when the single cell is thinned.
- the present invention takes the following means. That is, The present invention provides a laminate comprising an electrolyte layer and a structure including a pair of electrodes disposed so as to sandwich the electrolyte layer, and a pair of separators disposed so as to sandwich the structure, A separator is disposed at at least one end in the stacking direction of the laminate, and the separator disposed at the end has a groove portion on which a seal member can be disposed on a surface not facing the structure, and at least One groove part is a deep groove part whose depth is more than the thickness of the separator which has this groove part, It is a fuel cell module characterized by the above-mentioned.
- the “stacking direction of the laminate” refers to the direction in which the electrolyte layers, electrodes, separators, and the like constituting the laminate are laminated, and can also be expressed as the thickness direction of the separator.
- the “separator disposed at the end” means at least one separator among the separators disposed at both ends when the separator is disposed at both ends in the stacking direction of the laminate.
- the “separator disposed at the end” A separator disposed at one end in the stacking direction.
- the “surface not facing the structure” means the lower surface (upper surface) of the separator when the upper surface (lower surface) of the separator is facing the laminate.
- the “thickness of the separator having a groove” refers to the thickness at the portion of the separator that faces the structure in the stacking direction of the stack.
- the fuel cell module of the present invention has one laminated body or two or more laminated bodies laminated.
- the height of the convex portion formed on the surface having no deep groove portion of the separator having the deep groove portion may be higher than the thickness of the structure in contact with the separator.
- the “surface of the separator having the deep groove portion on the side not having the deep groove portion” refers to the lower surface (upper surface) of the separator.
- the convex portion formed on the surface of the separator having the deep groove portion on the side not having the deep groove portion means that the deep groove portion is provided on the upper surface (lower surface) of the separator, so that the lower surface (upper surface) of the separator. Refers to the protrusions formed on the surface.
- At least one of the separators having no deep groove portion has a concave portion that can absorb at least a part of the height of the convex portion. You may have.
- At least one of the separators not having a deep groove has a recess capable of absorbing at least part of the height of the protrusion” means that a separator having no recess and a separator having a protrusion are overlapped. It means that at least one of the separators not having the deep groove portion has a recess that makes the total thickness when the two separators overlap each other rather than the total thickness at the time.
- At least one of the separators having no deep groove portion has a smaller surface area with the stacking direction as the normal direction than the separator having the deep groove portion, and the periphery of the separator having a smaller area.
- the separator having the small area and the separator having the deep groove part are disposed so that the outer edge of the separator having the deep groove part is positioned, and the deep groove part is provided on the outer edge of the separator having the deep groove part positioned on the periphery of the separator having the small area. It may be provided.
- the separator having the deep groove portion has a fluid introduction path that penetrates through the thickness thereof, and the depth of the groove portion provided in the portion having the fluid introduction path has the fluid introduction path. It is preferable that the depth is at least shallower than the depth of at least one groove provided in the portion not to be used.
- the groove portion provided in the portion having the fluid introduction path means that the separator having the groove portion is viewed at the section where the fluid introduction path is present, with the thickness direction of the separator being the vertical direction.
- it refers to a groove provided on the upper or lower side of the fluid introduction path, in other words, a groove provided so as to straddle the fluid introduction path.
- the groove and the fluid introduction path are not in communication.
- the separator disposed at the end of the laminate in the stacking direction has a flow path for circulating a refrigerant or an oxygen-containing gas on a surface on the side not facing the structure, and the flow path.
- a seal member for preventing outflow of the refrigerant or oxygen-containing gas to be circulated can be disposed, and the gas manifold, the refrigerant manifold, and the flow path that are supplied to the structure are provided by the groove. It is preferable that the groove
- the gas supplied to the laminate means a hydrogen-containing gas and an oxygen-containing gas.
- the fuel cell module of the present invention includes a separator having a deep groove portion.
- a separator having a deep groove portion By forming a separator having a deep groove portion, even if the single cell is thinned, it is formed to a depth necessary for disposing sealing materials such as O-rings, gaskets, and adhesives. A deep groove portion can be secured. By securing the deep groove portion having a depth necessary for disposing the sealing material, an appropriate sealing function can be easily secured. Therefore, according to the present invention, it is possible to provide a fuel cell module capable of easily ensuring an appropriate sealing function even when the single cell is thinned.
- the present invention even if the height of the convex portion formed on the surface having no deep groove portion of the separator having the deep groove portion is higher than the thickness of the structure in contact with the separator.
- the height of the convex portion is higher than the thickness of the structure contacting the separator, and at least one of the separators having no deep groove portion has a concave portion capable of absorbing at least a part of the height of the convex portion.
- the single cell is thin while ensuring an appropriate sealing function by adopting a form in which the deep groove portion is provided on the outer edge of the separator having the deep groove portion positioned on the periphery of the separator having a small area. It becomes easy to realize.
- the depth of the groove provided in the part having the fluid introduction path is shallower than the depth of at least one groove provided in the part not having the fluid introduction path. Since the thickness can be effectively used, it is easy to realize a thin single cell while ensuring an appropriate sealing function.
- the structure includes a channel through which the refrigerant or the oxygen-containing gas flows, and a groove in which a seal member for preventing outflow of the refrigerant or the oxygen-containing gas through the channel can be disposed.
- a groove is provided so as to surround the gas manifold, the refrigerant manifold, and the flow path that are present on the surface of the non-opposing separator and are supplied to the structure. It is possible to reduce the useless space of the fuel cell module.
- FIG. 1 is a cross-sectional view illustrating a fuel cell module 100.
- FIG. 1 is a cross-sectional view illustrating a fuel cell module 100.
- FIG. 3 is a cross-sectional view illustrating a structure 5.
- FIG. 3 is a top view of the separator 1.
- FIG. It is a figure explaining the conventional seal
- 3 is a cross-sectional view illustrating a laminated body 30.
- 3 is a top view of a separator 40.
- FIG. 4 is a cross-sectional view of a separator 40.
- FIG. 4 is a cross-sectional view of a separator 40.
- FIG. 4 is a cross-sectional view of a separator 40.
- FIG. 1 is a cross-sectional view illustrating a fuel cell module 100.
- FIG. 3 is a cross-sectional view illustrating a structure 5.
- FIG. 1 is a cross-sectional view illustrating a fuel cell module 100 of the present invention.
- FIG. 1 shows a partial cross section of the fuel cell module 100.
- a hydrogen gas introduction path that connects the hydrogen manifold 7 and the hydrogen gas flow paths 1b and 3a
- an air introduction path that connects the air manifold (not shown) and the air flow paths 2a and 4b
- a refrigerant manifold (not shown)
- the description of the refrigerant introduction path that connects the refrigerant flow paths 1a, 4a, and 11 is omitted.
- the fuel cell module 100 functions as a structure 5 and 5, separators 1, 2, 3, and 4 disposed so as to sandwich the structures 5 and 5, and a hydrogen manifold.
- a laminated body 10 including the holes 7 and an air manifold and a refrigerant manifold (not shown) is provided.
- the laminated body 10 is provided with the separator 1 and the separator 4 at both ends in the laminating direction (vertical direction in FIG. 1).
- Adhesives 6, 6 are disposed on the outer edges of the structures 5, 5, and the outer edges of the separators 1, 3, 4 and the end face of the separator 2 are fixed using the adhesives 6, 6.
- the separator 1 has deep groove portions 1x and 1y in which O-rings 8 and 9 as seal members can be disposed on the surface not facing the structure 5. Further, the separator 4 has deep groove portions 4x and 4y in which O-rings 8 and 9 as seal members can be disposed on the surface not facing the structure 5.
- the fuel cell module 100 is used in a state where a plurality of laminated bodies 10, 10,... Are accommodated in a case (not shown).
- FIG. 2 is a cross-sectional view illustrating a state where a plurality of stacked bodies 10 and 10 are stacked.
- a hydrogen gas introduction path that connects the hydrogen manifold 7 and the hydrogen gas flow paths 1b and 3a
- an air introduction path that connects the air manifold (not shown) and the air flow paths 2a and 4b
- a refrigerant manifold (not shown)
- the description of the refrigerant introduction path that connects the refrigerant flow paths 1a, 4a, 11, and 12 is omitted. As shown in FIG.
- an O-ring 8 is disposed in a space defined by the deep groove portion 1x and the deep groove portion 4x, and the deep groove portion 1y and the deep groove portion 4y
- An O-ring 9 is disposed in the defined space.
- the total depth of the deep groove portion 1x and the deep groove portion 4x is smaller than the diameter of the O-ring 8, and the hydrogen flowing through the hydrogen manifold 7 by the O-ring 8 thus arranged is provided. Leakage is prevented.
- the total depth of the deep groove portion 1y and the deep groove portion 4y is smaller than the diameter of the O-ring 9, and the refrigerant flow path 12 is defined by the O-ring 9 thus arranged. Leakage of the circulating refrigerant is prevented.
- FIG. 3 is an enlarged cross-sectional view showing a part of the structure 5.
- the structure 5 includes a solid polymer electrolyte membrane 5a (hereinafter simply referred to as “electrolyte membrane 5a”), an anode electrode 5b and a cathode arranged so as to sandwich the electrolyte membrane 5a.
- An MEA 5x including the electrode 5c, and a gas diffusion layer 5d and a gas diffusion layer 5e disposed so as to sandwich the MEA 5x are provided.
- the gas diffusion layer 5d is disposed on the anode electrode 5b side
- the gas diffusion layer 5e is disposed on the cathode electrode 5c side.
- the fuel cell module 100 will be described with reference to FIGS.
- the air supplied to the structure 5 via the air flow path 2a passes through the gas diffusion layer 5e and reaches the cathode electrode 5c. Then, protons and electrons that have moved from the anode electrode 5b react with oxygen contained in the air supplied to the cathode electrode 5c in the cathode electrode 5c, thereby generating water.
- the reaction in which water is generated at the cathode electrode 5c can be expressed by the following formula 2. O 2 + 4H + + 4e ⁇ ⁇ 2H 2 O (Formula 2)
- the fuel cell module 100 includes a separator 1 having deep groove portions 1x and 1y and a separator 4 having deep groove portions 4x and 4y.
- the deep groove portions 1x and 1y and the deep groove portions 4x and 4y can be formed by a known method represented by, for example, press molding, drawing, resin molding, or the like. That is, even if the thickness of the separator is reduced as the single cell is made thinner, the deep groove portion in the fuel cell module of the present invention can be easily formed.
- By securing the deep groove it is possible to ensure an appropriate sealing function (sealing) using not only gaskets and adhesives but also easy-to-replace and inexpensive O-rings, even if the single cell is made thin. It becomes possible. Therefore, according to the present invention, it is possible to provide the fuel cell module 100 capable of easily ensuring an appropriate sealing function even when the single cell is thinned.
- FIG. 4 is a top view of the separator 1.
- the separator 1 has hydrogen manifold holes 7 and 13, air manifold holes 14 and 15, and refrigerant manifold holes 16 and 18.
- the holes 16 and 18 are separators. 1 are connected via a linear refrigerant flow path 17 formed on the upper surface of 1.
- the separator 1 has a plurality of convex objects 17 a, 17 a,... Between the hole 16 and the refrigerant flow path 17, and a plurality of convex objects 17 b, 17 b between the refrigerant flow path 17 and the hole 18. ,...have. As shown in FIG.
- the O-ring 9 is disposed on the outer edge of the separator 1 so as to surround them.
- FIG. 5 is a diagram for explaining a conventional seal configuration.
- the same components as those in the separator 1 are denoted by the same reference numerals as those used in FIG. 4, and description thereof will be omitted as appropriate.
- the conventional separator 91 when sealing the refrigerant flowing through the hole 16, the refrigerant flow path 17, and the hole 18, the outer periphery of the hole 16, the refrigerant flow path 17, and the hole 18.
- the sealing material 92 was disposed along the line. When the sealing material 92 is provided in this manner, the area of the region surrounded by the sealing material 92 can be reduced.
- the sealing material 92 shown in FIG. 5 is more complicated in shape than the sealing material 9 shown in FIG.
- the gasket can be replaced. Therefore, even if the gasket is damaged when the laminate 10 is removed, it can be replaced with a new gasket.
- the gasket is more expensive than the O-ring, even if the gasket is used as the sealing material 92, the replacement cost is likely to increase as compared with the case where the O-ring is used.
- the separator 1 surrounds the O-ring 19, the hole 16, the O-ring 20, the refrigerant flow path 17, the O-ring 8, the hole 18, and the O-ring 21.
- an O-ring 9 is disposed on the outer edge of the separator 1.
- the cost for assembling the fuel cell module 100 again by exchanging a part of the laminates 10 can be reduced.
- the O-ring 9 is easier to remove than the gasket, it is possible to increase the efficiency of the replacement work.
- the O-ring does not have a projection as provided in the gasket, the surface of the laminated body to be laminated can be flattened, and as a result, the efficiency of the exchange operation can be increased. Is possible.
- the present invention is not limited to the form.
- a sealing material for example, an adhesive or a gasket
- an O-ring should be used as the sealing material from the standpoint of reducing the cost of replacing the laminate and making it easier to increase the work efficiency so that an appropriate sealing function can be easily secured. Is preferred.
- the deep groove portions 1x and 1y having a depth equal to or greater than the thickness of the portion of the separator 1 facing the structure 5 in the stacking direction of the stacked body 10 are provided.
- part of the separator 4 which opposes the structure 5 in the lamination direction of the laminated body 10 were illustrated, this book The invention is not limited to this form.
- the fuel cell module of the present invention may be configured such that the separator having the deep groove portion is disposed only on one end side in the stacking direction of the laminate, and the separator having no deep groove portion is disposed on the other end side. is there.
- separator 1 in which the height of the convex portion formed on the surface on the side not having the deep groove portions 1 x and 1 y is higher than the thickness of the structure 5.
- this invention is not limited to the said form.
- separators having deep groove portions whose height of the convex portion is higher than the thickness of the structural body may be respectively disposed on both end sides of the laminate, and the height of the convex portion is the structure.
- a separator having a deep groove portion higher than the thickness of the body may be in a form not provided in the laminate.
- the outer edge of the separator 1 is positioned on the peripheral edge of the separator 2 whose surface area is normal to the stacking direction.
- the separator 1 and the separator 2 are arrange
- the fuel cell module of the present invention includes a separator in which the height of the convex portion formed on the back side of the surface provided with the deep groove portion is higher than the thickness of the structure
- the height of the convex portion May not be absorbed by reducing the area of the separator 2 as in the fuel cell module 100, but may be absorbed by devising a shape in the thickness direction of the separator having no deep groove portion.
- FIG. 6 shows an example of a laminated body that absorbs the height of the convex portion by devising the shape in the thickness direction of the separator having no deep groove portion.
- FIG. 6 is a cross-sectional view for explaining the form of the laminate 30.
- FIG. 6 shows a partial cross section of the stacked body 30.
- a hydrogen gas introduction path connecting the hydrogen manifold 7 and the hydrogen gas flow paths 31b and 33a an air introduction path connecting the air manifold (not shown) and the air flow paths 32a and 34b, and a refrigerant manifold (not shown)
- the description of the refrigerant introduction path that connects the refrigerant flow paths 31a, 34a, and 11 is omitted.
- the same components as those of the fuel cell module 100 are denoted by the same reference numerals as those used in FIG. 1, and the description thereof is omitted as appropriate. As shown in FIG.
- the stacked body 30 includes structural bodies 5, 5, separators 31, 32, 33, 34 disposed so as to sandwich the structural bodies 5, 5, and holes that function as hydrogen manifolds. 7 and an air manifold and a refrigerant manifold (not shown).
- the laminated body 30 is provided with a separator 31 and a separator 34 at both ends in the lamination direction (up and down direction in FIG. 6).
- Adhesives 6, 6, 6 are disposed on the outer edges of the structures 5, 5 and the outer edges of the separators 31, 32, 33, 34 are fixed using the adhesives 6, 6, 6. .
- the separator 31 has deep groove portions 31x and 31y in which O-rings 8 and 9 as seal members can be disposed on the surface not facing the structure 5.
- the separator 34 has deep groove portions 34x and 34y in which O-rings 8 and 9 as seal members can be disposed on the surface that does not face the structure 5.
- the deep groove portions 31x and 31y and the deep groove portions 34x and 34y can be formed by a known method represented by, for example, press molding, drawing processing, resin molding, or the like.
- FIG. 7 is a cross-sectional view illustrating a state in which a plurality of stacked bodies 30 and 30 are stacked.
- a hydrogen gas introduction path that connects the hydrogen manifold 7 and the hydrogen gas flow paths 31b and 33a
- an air introduction path that connects the air manifold (not shown) and the air flow paths 32a and 34b
- a refrigerant manifold (not shown)
- the description of the refrigerant introduction path connecting the refrigerant flow paths 31a, 34a, 11, and 12 is omitted.
- the same components as those of the fuel cell module 100 are denoted by the same reference numerals as those used in FIG. 2, and the description thereof is omitted as appropriate. As shown in FIG.
- the O-ring 8 is disposed in the space defined by the deep groove portion 31x and the deep groove portion 34x, and the deep groove portion 31y and the deep groove portion 34y
- An O-ring 9 is disposed in the defined space.
- the total depth of the deep groove portion 31x and the deep groove portion 34x is smaller than the diameter of the O-ring 8, and the hydrogen flowing through the hydrogen manifold 7 by the O-ring 8 arranged in this way. Leakage is prevented.
- the total depth of the deep groove portion 31y and the deep groove portion 34y is smaller than the diameter of the O-ring 9, and the refrigerant flow path 12 is defined by the O-ring 9 thus arranged. Leakage of the circulating refrigerant is prevented.
- the separator 32 having no deep groove portion is devised in the thickness direction (up and down direction in FIG. 6), and a recess 32x is formed on the upper surface side of the separator 32 (upper side in FIG. 6).
- a part of the height of the convex portion formed on the back surface side (the lower side in the drawing of FIG. 6) of the deep groove portions 31x and 31y is absorbed.
- the separator 33 having no deep groove portion is devised in the thickness direction (up and down direction in FIG. 6), and a recess 33x is formed on the lower surface side of the separator 33 (lower side in FIG. 6).
- the battery module is not limited to this form.
- the fuel cell module of the present invention can be configured to include a separator having a plurality of grooves having different depths. Then, the form which comprises the separator which has several groove parts from which depth differs is demonstrated below.
- FIG. 8 is a top view of the laminate 40 provided in the fuel cell module of the present invention.
- a separator 41 is disposed at one end in the stacking direction of the stacked body 40.
- the separator 41 has hydrogen manifold holes 46, 47, air manifold holes 48, 49, and refrigerant manifold holes 50, 51.
- the holes 50 and 51 are formed on the surface of the separator 41.
- the separator 41 has a plurality of convex objects 41c, 41c,... Between the hole 50 and the refrigerant channel 41a, and a plurality of convex objects 41d, 41d between the refrigerant channel 41a and the hole 51. ,...have.
- an O-ring 52 is provided around the hole 46
- an O-ring 53 is provided around the hole 47
- an O-ring 54 is provided around the hole 48
- an O-ring 55 is provided around the hole 49.
- An O-ring 56 having a larger diameter than the O-rings 52, 53, 54, and 55 is disposed on the outer edge of the separator 41 so as to surround them.
- FIG. 9 is an enlarged view showing the IX-IX cross section of FIG.
- the illustration of the O-ring 55 disposed in the groove portion 41x is omitted in FIG.
- FIG. 10 is an enlarged view of the XX section of FIG.
- the illustration of the O-ring 53 disposed in the groove 41z is omitted in FIG.
- the laminate 40 includes the structures 5, 5, separators 41, 42, 43, 44 disposed so as to sandwich the structures 5, 5, and a hydrogen manifold. It has a hole 47 that functions, and a hole 49 that functions as an air manifold.
- the laminated body 40 is provided with a separator 41 and a separator 44 at both ends in the laminating direction (up and down direction in FIG. 9 and FIG. 10).
- Adhesives 45, 45, 45 are arranged on the outer edges of the structures 5, 5, and the outer edges of the separators 41, 42, 43, 44 are fixed using the adhesives 45, 45, 45. .
- a deep groove portion 41 y in which the O-ring 56 is disposed, a groove portion 41 x in which the O-ring 55 is disposed, and an O-ring 53 are disposed on the surface not facing the structure 5. Groove portion 41z.
- the separator 44 has a coolant channel 44a, a deep groove portion 44y in which an O-ring 56 can be disposed, a groove portion 44x in which an O-ring 55 can be disposed, And a groove portion 44z in which the O-ring 53 can be disposed.
- the groove portions 41x, 41z, 44x, 44z and the deep groove portions 41y, 44y are formed by a known method represented by, for example, press molding, drawing processing, resin molding, or the like.
- the separator 41 is provided with a fluid introduction path 41p (hereinafter referred to as “hydrogen introduction path 41p”) that connects the hole 47 and the hydrogen gas flow path 41b.
- the fluid introduction path 43x that connects the hole 47 and the hydrogen gas flow path 43a is provided.
- the separator 42 is provided with a fluid introduction path 42x that connects the hole 49 and the air flow path 42a, and the separator 44 has a fluid that connects the hole 49 and the air flow path 44b.
- An introduction path 44p (hereinafter referred to as “air introduction path 44p”) is provided. As shown in FIGS.
- the depth of the groove 41z provided so as to straddle the hydrogen introduction path 41p is shallower than the groove 41x that does not straddle the fluid introduction path, and straddles the air introduction path 44p.
- the depth of the provided groove 44x is shallower than the groove 44z that does not straddle the fluid introduction path.
- the refrigerant channels 1a, 4a, and the separators 1 and 4 disposed at the ends of the stack 10 in the stacking direction are provided on the surfaces of the separators 1 and 4 that do not face the structures 5 and 5;
- the embodiment in which the deep groove portions 1y and 4y in which the O-ring 9 for preventing the refrigerant flowing out through the refrigerant flow paths 1a and 4a is provided is illustrated, the present invention is limited to the embodiment. It is not something.
- a fuel cell module includes a separator disposed at an end in a stacking direction of a stacked body, a flow path for circulating air on a surface of the separator that does not face the structure, and air flowing through the flow path It is also possible to adopt a form in which a groove part in which a seal member for preventing the outflow of the gas is provided is provided.
- the fuel cell module of the present invention includes a flow path for allowing fluid to flow on a surface of the separator disposed at the end of the stack in the stacking direction and not facing the structure, and the flow path. It is also possible to adopt a form in which a groove portion for arranging a seal member corresponding to the circulating fluid is not provided.
- the separator disposed at the end in the stacking direction of the stacked body may have a flow path through which the refrigerant or air flows and a groove in which a seal member that prevents the refrigerant or air flowing through the flow path is disposed.
- the groove for the seal member provided on the surface not facing the structure is provided at the end of the stack in the stacking direction. It is preferably provided at the outer edge of the separator, and an O-ring is preferably provided in this groove.
- the present invention when a flow path for the refrigerant or air is provided on the surface of the separator disposed at the end of the stack in the stacking direction that does not face the structure, although the embodiment in which the seal member for preventing the flowing refrigerant or air from flowing out is arranged on the surface not facing the structure is mentioned, the present invention is not limited to the embodiment.
- the fuel cell module of the present invention is provided with a coolant or air flow path on the surface of the separator disposed at the end in the stacking direction of the stack, the side not facing the structure. It is also possible to adopt a configuration in which the seal member for preventing the refrigerant or air flowing out of the flow path from flowing out is not disposed on the surface that does not face the structure. In this case, it is considered that refrigerant or air flows out of the laminated body.
- the fuel cell module of the present invention is used in a state where the laminated body is accommodated in the case. If it does not flow outside the case, it is considered that there is no impact on the external environment.
- a separator disposed at the end of the laminate in the stacking direction is provided with a seal member that prevents the outflow of refrigerant or air flowing on the surface that does not face the structure on the side that does not face the structure.
- the case that accommodates the laminated body may have a sealing function for preventing the refrigerant or air from flowing out.
- a plurality of stacked laminates are accommodated in a first case in which one side of a rectangular parallelepiped shape is opened, and the openings of the first case are closed with a plate-like member, thereby a plurality of stacked laminates. Is considered to be housed in a case.
- the opening of the first case containing the plurality of laminates is formed into a plate-like shape.
- a sealing function that prevents the refrigerant or air from flowing out.
- Deep groove part 32a, 34b ... Air flow path 32x, 33x ... Recessed part DESCRIPTION OF SYMBOLS 40 ... Laminated body 41, 42, 43, 44 ... Separator 41a ... Refrigerant flow path 41b, 43a ... Hydrogen gas flow path 41p ... Hydrogen introduction path (fluid introduction path) 41x, 41z ... groove 41y ... deep groove 42a, 44b ... air flow path 42x, 43x ... fluid introduction path 44a ... refrigerant flow path 44p ... air introduction path (fluid introduction path) 44x, 44z ... groove 44y ... deep groove 45 ... adhesive 46, 47 ... hole (hydrogen manifold) 48, 49 ... holes (air manifold) 50, 51 ... holes (refrigerant manifold) 52, 53, 54, 55, 56 ... O-ring (seal member) 100: Fuel cell module
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Abstract
Description
本発明は、電解質層及び該電解質層を挟持するように配設された一対の電極を含む構造体と、該構造体を挟持するように配設された一対のセパレータとを具備する積層体、を備え、積層体の積層方向の少なくとも一端にセパレータが配設され、端に配設されたセパレータは、構造体に対向しない側の面に、シール部材を配設可能な溝部を有し、少なくとも一つの溝部は、その深さが該溝部を有するセパレータの厚さ以上の深溝部であることを特徴とする、燃料電池モジュールである。
H2 → 2H+ + 2e- …(式1)
アノード電極5bで生じたプロトンは、電解質膜5aを通ってカソード電極5cへと達し、アノード電極5bで生じた電子は、電解質膜5aが電子伝導性を有しないため、外部回路を経由してカソード電極5cへと達する。
O2 + 4H+ + 4e- → 2H2O …(式2)
1a、4a、11、12、17…冷媒流路
1b、3a…水素ガス流路
1x、1y、4x、4y…深溝部
2a、4b…空気流路
5…構造体
6…接着剤
7、13…孔(水素マニホールド)
8、9、19、20、21…O-リング(シール部材)
10…積層体
14、15…孔(空気マニホールド)
16、18…孔(冷媒マニホールド)
30…積層体
31、32、33、34…セパレータ
31a、34a…冷媒流路
31b、33a…水素ガス流路
31x、31y、34x、34y…深溝部
32a、34b…空気流路
32x、33x…凹部
40…積層体
41、42、43、44…セパレータ
41a…冷媒流路
41b、43a…水素ガス流路
41p…水素導入路(流体導入路)
41x、41z…溝部
41y…深溝部
42a、44b…空気流路
42x、43x…流体導入路
44a…冷媒流路
44p…空気導入路(流体導入路)
44x、44z…溝部
44y…深溝部
45…接着剤
46、47…孔(水素マニホールド)
48、49…孔(空気マニホールド)
50、51…孔(冷媒マニホールド)
52、53、54、55、56…O-リング(シール部材)
100…燃料電池モジュール
Claims (6)
- 電解質層及び該電解質層を挟持するように配設された一対の電極を含む構造体と、該構造体を挟持するように配設された一対のセパレータとを具備する積層体、を備え、
前記積層体の積層方向の少なくとも一端に前記セパレータが配設され、
端に配設されたセパレータは、前記構造体に対向しない側の面に、シール部材を配設可能な溝部を有し、
少なくとも一つの前記溝部は、その深さが該溝部を有するセパレータの厚さ以上の深溝部であることを特徴とする、燃料電池モジュール。 - 前記深溝部を有するセパレータの、前記深溝部を有しない側の面に形成されている凸部の高さは、該セパレータと接触する構造体の厚さよりも高いことを特徴とする、請求の範囲第1項に記載の燃料電池モジュール。
- 前記深溝部を有しないセパレータの少なくとも一つが、前記凸部の高さの少なくとも一部を吸収可能な凹部を有することを特徴とする、請求の範囲第2項に記載の燃料電池モジュール。
- 前記深溝部を有しないセパレータの少なくとも一つは、前記深溝部を有するセパレータよりも、前記積層方向を法線方向とする面の面積が小さく、且つ、
面積が小さいセパレータの周縁に、前記深溝部を有するセパレータの外縁が位置するように、面積が小さい前記セパレータ及び前記深溝部を有するセパレータが配設され、
面積が小さい前記セパレータの周縁に位置する、前記深溝部を有するセパレータの前記外縁に、前記深溝部が設けられていることを特徴とする、請求の範囲第1項~請求の範囲第3項のいずれか1項に記載の燃料電池モジュール。 - 前記深溝部を有するセパレータは、その厚さ内を貫通する流体導入路を有し、
前記流体導入路を有する部位に設けられた前記溝部の深さは、前記流体導入路を有しない部位に設けられた少なくとも一つの前記溝部の深さよりも浅いことを特徴とする、請求の範囲第1項~請求の範囲第4項のいずれか1項に記載の燃料電池モジュール。 - 前記積層体の積層方向の端に配設されている前記セパレータの、前記構造体に対向しない側の面に、冷媒又は酸素含有気体を流通させる流路、及び、該流路を流通させる冷媒又は酸素含有気体の流出を防止するためのシール部材を配設可能な溝を有し、
前記溝によって、前記構造体へと供給される気体のマニホールド、前記冷媒のマニホールド、及び、前記流路が囲まれるように、前記溝が前記セパレータの外縁に設けられていることを特徴とする、請求の範囲第1項~請求の範囲第5項のいずれか1項に記載の燃料電池モジュール。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
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CN2010800096907A CN102640337A (zh) | 2010-12-02 | 2010-12-02 | 燃料电池模组 |
DE112010006046T DE112010006046T5 (de) | 2010-12-02 | 2010-12-02 | Brennstoffzellenmodul |
CA2756905A CA2756905A1 (en) | 2010-12-02 | 2010-12-02 | Fuel cell module |
PCT/JP2010/071567 WO2012073364A1 (ja) | 2010-12-02 | 2010-12-02 | 燃料電池モジュール |
US13/202,925 US20130236803A1 (en) | 2010-12-02 | 2010-12-02 | Fuel cell module |
JP2011517696A JPWO2012073364A1 (ja) | 2010-12-02 | 2010-12-02 | 燃料電池モジュール |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2010/071567 WO2012073364A1 (ja) | 2010-12-02 | 2010-12-02 | 燃料電池モジュール |
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WO2012073364A1 true WO2012073364A1 (ja) | 2012-06-07 |
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PCT/JP2010/071567 WO2012073364A1 (ja) | 2010-12-02 | 2010-12-02 | 燃料電池モジュール |
Country Status (6)
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US (1) | US20130236803A1 (ja) |
JP (1) | JPWO2012073364A1 (ja) |
CN (1) | CN102640337A (ja) |
CA (1) | CA2756905A1 (ja) |
DE (1) | DE112010006046T5 (ja) |
WO (1) | WO2012073364A1 (ja) |
Cited By (1)
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JP2014107228A (ja) * | 2012-11-29 | 2014-06-09 | Toyota Motor Corp | 燃料電池スタック |
Families Citing this family (2)
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JP5780326B2 (ja) * | 2013-09-30 | 2015-09-16 | ブラザー工業株式会社 | 燃料電池及びセパレータ |
WO2023232236A1 (en) * | 2022-05-31 | 2023-12-07 | Ceres Intellectual Property Company Limited | Cell unit with securely fixed seal around manifold opening |
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JP2004319279A (ja) * | 2003-04-16 | 2004-11-11 | Honda Motor Co Ltd | 燃料電池 |
JP2005149748A (ja) * | 2003-11-11 | 2005-06-09 | Nitta Ind Corp | セパレータ |
JP2005339891A (ja) * | 2004-05-25 | 2005-12-08 | Mitsubishi Electric Corp | 固体高分子形燃料電池 |
JP2006244765A (ja) * | 2005-03-01 | 2006-09-14 | Toyota Motor Corp | 燃料電池スタック |
JP2008547183A (ja) * | 2005-06-28 | 2008-12-25 | プジョー シトロエン オートモビル | シール性を改善したバイポーラプレート、およびこれを用いた燃料電池セル |
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JP4934243B2 (ja) | 2000-08-08 | 2012-05-16 | 株式会社 ケミックス | 小型燃料電池用セパレータ及びセルスタック |
US7344798B2 (en) * | 2003-11-07 | 2008-03-18 | General Motors Corporation | Low contact resistance bonding method for bipolar plates in a pem fuel cell |
JP4981400B2 (ja) | 2006-05-01 | 2012-07-18 | 本田技研工業株式会社 | 燃料電池 |
JP5235351B2 (ja) | 2007-08-10 | 2013-07-10 | 本田技研工業株式会社 | 燃料電池 |
JP5181969B2 (ja) | 2008-09-25 | 2013-04-10 | トヨタ自動車株式会社 | 燃料電池 |
-
2010
- 2010-12-02 US US13/202,925 patent/US20130236803A1/en not_active Abandoned
- 2010-12-02 JP JP2011517696A patent/JPWO2012073364A1/ja active Pending
- 2010-12-02 WO PCT/JP2010/071567 patent/WO2012073364A1/ja active Application Filing
- 2010-12-02 DE DE112010006046T patent/DE112010006046T5/de not_active Withdrawn
- 2010-12-02 CA CA2756905A patent/CA2756905A1/en not_active Abandoned
- 2010-12-02 CN CN2010800096907A patent/CN102640337A/zh active Pending
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JP2004319279A (ja) * | 2003-04-16 | 2004-11-11 | Honda Motor Co Ltd | 燃料電池 |
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CA2756905A1 (en) | 2012-06-02 |
CN102640337A (zh) | 2012-08-15 |
JPWO2012073364A1 (ja) | 2014-05-19 |
US20130236803A1 (en) | 2013-09-12 |
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