WO2013042283A1 - 高分子電解質形燃料電池及びそれを備える燃料電池システム - Google Patents
高分子電解質形燃料電池及びそれを備える燃料電池システム Download PDFInfo
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- WO2013042283A1 WO2013042283A1 PCT/JP2012/001469 JP2012001469W WO2013042283A1 WO 2013042283 A1 WO2013042283 A1 WO 2013042283A1 JP 2012001469 W JP2012001469 W JP 2012001469W WO 2013042283 A1 WO2013042283 A1 WO 2013042283A1
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- separator
- fuel cell
- flow region
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- electrode
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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
- H01M8/1016—Fuel cells with solid electrolytes characterised by the electrolyte material
- H01M8/1018—Polymeric electrolyte materials
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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
- H01M8/0202—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
- H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
- H01M8/0263—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant having meandering or serpentine paths
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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
- H01M8/2465—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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- 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 polymer electrolyte fuel cell and a fuel cell system including the polymer electrolyte fuel cell, and more particularly to a separator structure of a polymer electrolyte fuel cell.
- a polymer electrolyte fuel cell (hereinafter referred to as PEFC) generates electric power and heat simultaneously by causing an electrochemical reaction between a fuel gas containing hydrogen and an oxidant gas containing oxygen such as air.
- PEFC unit cell (cell) is composed of a polymer electrolyte membrane and a pair of gas diffusion electrodes (anode and cathode), a MEA (Membrane-Electrode-Assembly), a gasket, a conductive plate-like separator, have.
- a manifold hole for forming a manifold for supplying and discharging fuel gas or oxidant gas (these are called reaction gas) is provided on the main surface of the separator.
- a reaction gas flow path formed in a serpentine shape in a groove shape through which the reaction gas flows is provided on the main surface in contact with the gas diffusion electrode so as to communicate with these manifold holes.
- a recessed portion for mixing the power generation gas is provided at the folded portion of the flow path, and a plurality of island-shaped protrusions erected from the bottom surface of the recessed portion are disposed.
- a fuel cell separator and a fuel cell are known (see, for example, Patent Document 1).
- the power generation gas can be properly mixed by arranging the protrusions on the extension of the flow channel.
- the reaction gas when the reaction gas is low-humidified, the reaction is performed at the portion (rib) that contacts the gas diffusion layer of the separator where water generated by power generation tends to stay.
- the area of contact with the gas diffusion layer is smaller in the protrusion of the recess than in other regions (for example, ribs). For this reason, power generation concentrates in the projections of the depressions as compared with other regions.
- the power generation concentration increases and the amount of heat generation increases especially in the portion where the recess provided in one separator overlaps the recess provided in the other separator. As a result, the polymer electrolyte membrane may be deteriorated.
- the present invention has been made in view of such problems, and reduces the electrical contact resistance between the separator and the electrode and suppresses the deterioration of the polymer electrolyte membrane, as compared with the conventional fuel cell. It is an object of the present invention to provide a polymer electrolyte fuel cell that can be used and a fuel cell system including the same.
- a polymer electrolyte fuel cell comprises an electrolyte layer and an electrode-electrode assembly having a pair of electrodes sandwiching the electrolyte layer, and a plate-like electrolyte layer-electrode.
- One of the pair of electrodes of the joined body is disposed so as to be in contact with one electrode, and a plurality of groove-shaped first straight portions and one or more first folded portions are provided on one main surface in contact with the electrodes.
- a conductive first separator formed in a bent shape and provided with a first reactive gas flow region through which the first reactive gas flows, and a plate-like shape of the electrolyte layer-electrode assembly.
- One of the pair of electrodes is disposed so as to be in contact with the other electrode, and has a plurality of groove-shaped second linear portions and one or more second folded portions on one main surface that contacts the electrode, and is bent And a second reaction gas flow region through which the second reaction gas flows is provided.
- a first separator, and at least one of the first folded portions includes at least a first recessed portion and a bottom surface of the first recessed portion.
- a plurality of first protrusions standing from the first separator are provided, and the second separator includes at least one second folded portion including at least one second folded portion and the second recess.
- a plurality of second protrusions provided upright from the bottom surface of the two depressions, and the first depressions provided in the first separator as viewed from the thickness direction of the first separator, and the second
- the overlapping area which is the sum of the areas where the second depressions provided in the separator overlap with each other, is the area of all the first depressions provided in the first separator and the second separator.
- Of all the second recesses provided. Is the area of the sum of the product, less than 5% of the total area.
- the electrical contact resistance between the separator and the electrode in the folded portion provided with the recess and the protrusion can be reduced.
- the fuel cell system includes the polymer electrolyte fuel cell, and a first reaction gas supplier configured to supply the first reaction gas to the first reaction gas flow region.
- a second reaction gas supply unit configured to supply the second reaction gas to the second reaction gas flow region; and a structure configured to supply the cooling medium to the cooling medium flow region.
- a controller that controls the first reaction gas supply device, the second reaction gas supply device, and the cooling medium supply device so as to be lower than the temperature of the cooling medium supplied to the flow region. .
- the gap between the separator and the electrode in the folded portion provided with the recess and the protrusion is provided. Electrical contact resistance can be reduced.
- the electrical contact resistance between the separator and the electrode in the folded portion provided with the recess and the protrusion is lower than that of the conventional fuel cell. It becomes possible to reduce.
- FIG. 1 is a perspective view schematically showing a schematic configuration of a fuel cell stack including the polymer electrolyte fuel cell according to the first embodiment.
- FIG. 2 is a cross-sectional view schematically showing a schematic configuration of the fuel cell in the fuel cell stack shown in FIG.
- FIG. 3 is a schematic diagram showing a schematic configuration of the inner surfaces of the anode separator and the cathode separator in the polymer electrolyte fuel cell shown in FIG.
- FIG. 4 is a perspective view of the polymer electrolyte fuel cell shown in FIG. 2 as viewed from the thickness direction of the anode separator.
- FIG. 1 is a perspective view schematically showing a schematic configuration of a fuel cell stack including the polymer electrolyte fuel cell according to the first embodiment.
- FIG. 2 is a cross-sectional view schematically showing a schematic configuration of the fuel cell in the fuel cell stack shown in FIG.
- FIG. 3 is a schematic diagram showing a schematic configuration of the inner surfaces of the anode
- FIG. 5 is a schematic diagram showing a schematic configuration of the inner surfaces of the anode separator and the cathode separator in the polymer electrolyte fuel cell of Modification 1 of Embodiment 1.
- FIG. 6 is a block diagram schematically showing a schematic configuration of the fuel cell system according to the second embodiment.
- the polymer electrolyte fuel cell according to Embodiment 1 includes an electrolyte layer and an electrode layer-electrode assembly having a pair of electrodes sandwiching the electrolyte layer, and a pair of electrodes of the electrolyte layer-electrode assembly in a plate shape Are arranged so as to be in contact with one of the electrodes, and have a plurality of groove-shaped first straight portions and one or more first folded portions on one main surface in contact with the electrodes, and are formed in a bent shape.
- a conductive first separator provided with a first reaction gas flow region through which the first reaction gas flows, and a plate-like contact with the other electrode of the pair of electrodes of the electrolyte layer-electrode assembly And has a plurality of groove-like second straight portions and one or more second folded portions on one main surface that is in contact with the electrode, is formed in a bent shape, and allows the second reaction gas to pass therethrough.
- a conductive second separator provided with a second reaction gas flow region for flowing, and a first separator
- the at least one first folded portion among the one or more first folded portions is provided with a first recess and a plurality of first protrusions erected from the bottom surface of the first recess, Of the one or more second folded portions, the second separator has at least one second folded portion having a second recessed portion and a plurality of second protrusions erected from the bottom surface of the second recessed portion.
- the first recess portion provided in the first separator and the second recess portion provided in the second separator are the sum of the areas where they overlap each other.
- the overlapping area is 5% of the total area, which is the total area of the areas of all the first depressions provided in the first separator and the areas of all the second depressions provided in the second separator.
- the overlapping area is set to 5% or less of the total area from the viewpoint of facilitating the design change of the first reactive gas flow region or the second reactive gas flow region.
- the overlapping area is preferably as low as possible in the total area from the viewpoint of further reducing the electrical contact resistance between the separator and the electrode in the folded portion.
- the overlapping area is 4% or less, 3% Hereinafter, it can be appropriately set to 2% or less and 1% or less.
- the first recess may be provided in the upstream portion of the first reaction gas flow region.
- the second recess may be provided in the upstream portion of the second reaction gas flow region.
- the first reaction gas flow region and the second reaction gas flow region are the parallel flow and as viewed from the thickness direction of the first separator.
- the first reactive gas flowing through the first linear portion that first overlaps with the electrode and when traveling from the upstream to the downstream of the second reactive gas flow region The second reaction gas that flows through the second linear portion that first overlaps the electrode is configured to face each other, and the first recess portion is configured to allow the first reaction gas flow when viewed in the thickness direction of the first separator.
- the second reaction gas flow region is provided in the first folded portion that first overlaps one of the electrodes when the flow region is traced from the upstream to the downstream, as viewed in the thickness direction of the second separator.
- the second fold that first overlaps the other electrode when traversing from upstream to downstream It may be provided to be part.
- the number of the second depressions may be larger than that of the first depressions.
- the cooling medium passage through which the cooling medium flows is provided on the other main surface that does not contact the electrode of at least one of the first separator and the second separator.
- a flow region may be provided.
- FIG. 1 is a perspective view schematically showing a schematic configuration of a fuel cell stack including a polymer electrolyte fuel cell (hereinafter simply referred to as a fuel cell) according to the first embodiment.
- a fuel cell a polymer electrolyte fuel cell (hereinafter simply referred to as a fuel cell) according to the first embodiment.
- the vertical direction of the fuel cell stack is shown as the vertical direction in the figure.
- the fuel cell stack 61 has a cell stack 62.
- the cell stack 62 is formed by stacking a plurality of fuel cells 100 in the thickness direction.
- End plates 63 and 64 are disposed at both ends of the cell stack 62, respectively.
- a current collector plate and an insulating plate are disposed between the end plate 63 and the cell stack 62 and between the end plate 64 and the cell stack 62 (not shown).
- the fuel gas penetrates in the stacking direction of the fuel cell 100 of the cell stack 62 in the upper part of one side portion (the left side in the drawing: hereinafter referred to as the first side portion) of the cell stack 62.
- a supply manifold 131 is provided, and an oxidant gas discharge manifold 134 is provided below the supply manifold 131.
- a cooling medium is inserted inside the upper part of the cell stack 62 where the fuel gas supply manifold 131 is disposed, so as to penetrate the cell stack 62 in the stacking direction of the fuel cells 100.
- a supply manifold 135 is provided.
- the upper part of the other side part (the right side part of the drawing: hereinafter referred to as the second side part) in the cell stack 62 is oxidized so as to penetrate in the stacking direction of the fuel cell 100 of the cell stack 62.
- An agent gas supply manifold 133 is provided, and a fuel gas discharge manifold 132 is provided below the agent gas supply manifold 133 so as to penetrate the cell stack 62 in the stacking direction of the fuel cells 100.
- a cooling medium is inserted inside the lower portion of the cell stack 62 where the fuel gas discharge manifold 132 is disposed so as to penetrate the cell stack 62 in the stacking direction of the fuel cells 100.
- a discharge manifold 136 is provided.
- the fuel cell 100 employs a so-called internal manifold type fuel cell stack, but is not limited thereto, and an external manifold type fuel cell stack may be employed.
- FIG. 2 is a cross-sectional view schematically showing a schematic configuration of the fuel cell in the fuel cell stack shown in FIG.
- the fuel cell 100 according to Embodiment 1 includes an MEA (Membrane-Electrode-Assembly) 5, a gasket 7, an anode separator (first separator) 6A, A cathode separator (second separator) 6B.
- MEA Membrane-Electrode-Assembly
- first separator anode separator
- second separator cathode separator
- the MEA 5 includes a polymer electrolyte membrane 1 that selectively transports hydrogen ions, an anode electrode 4A, and a cathode electrode 4B.
- the polymer electrolyte membrane 1 has a substantially quadrangular (here, rectangular) shape, and an anode electrode 4A and a cathode are positioned on both sides of the polymer electrolyte membrane 1 so as to be located inward from the peripheral edge thereof. Electrodes 4B are provided respectively.
- manifold holes such as a fuel gas supply manifold hole 31 and a cooling medium supply manifold hole 35 are provided in the peripheral edge portion of the polymer electrolyte membrane 1 so as to penetrate in the thickness direction.
- the anode electrode 4A is provided on one main surface of the polymer electrolyte membrane 1, and is attached to a catalyst-supporting carbon made of carbon powder (conductive carbon particles) supporting a platinum-based metal catalyst (electrode catalyst) and to the catalyst-supporting carbon.
- the anode catalyst layer 2A containing the polymer electrolyte and the anode gas diffusion layer 3A having both gas permeability and conductivity are provided.
- the anode catalyst layer 2 ⁇ / b> A is disposed so that one main surface is in contact with the polymer electrolyte membrane 1.
- An anode gas diffusion layer 3A is disposed on the other main surface of the anode catalyst layer 2A.
- the cathode electrode 4B is provided on the other main surface of the polymer electrolyte membrane 1, and comprises a catalyst-carrying carbon and a catalyst-carrying carbon made of carbon powder (conductive carbon particles) carrying a platinum-based metal catalyst (electrode catalyst).
- a cathode catalyst layer 2B containing a polymer electrolyte attached to carbon and a cathode gas diffusion layer 3B provided on the cathode catalyst layer 2B and having both gas permeability and conductivity are provided.
- the cathode catalyst layer 2B is disposed such that one main surface is in contact with the polymer electrolyte membrane 1, and the cathode gas diffusion layer 3B is disposed on the other main surface of the cathode catalyst layer 2B.
- the anode catalyst layer 2A when viewed from the thickness direction of the anode separator 6A, has an outer end located outside the outer end of the anode gas diffusion layer 3A (so that it protrudes).
- the cathode catalyst layer 2B is formed so that the outer end thereof is located outward from the outer end of the cathode gas diffusion layer 3B.
- the layer 2A may be formed such that the outer end thereof is positioned inward of the anode gas diffusion layer 3A, and the cathode catalyst layer 2B is positioned inward of the cathode gas diffusion layer 3B. It may be formed as follows.
- a gasket 7 is provided around the anode electrode 4A and the cathode electrode 4B (more precisely, the anode gas diffusion layer 3A and the cathode gas diffusion layer 3B) of the MEA 5.
- a pair of fluororubber made of doughnut-shaped with the polymer electrolyte membrane 1 interposed therebetween.
- manifold holes such as a fuel gas supply manifold hole 31 and a cooling medium supply manifold hole 35 including through holes in the thickness direction are provided.
- a conductive anode separator 6A and a cathode separator 6B are disposed so as to sandwich the MEA 5 and the gasket 7.
- MEA 5 is mechanically fixed, and when a plurality of fuel cells 100 are stacked in the thickness direction, MEA 5 is electrically connected.
- the anode separator 6A and the cathode separator 6B can be made of a metal having excellent thermal conductivity and conductivity, graphite, or a mixture of graphite and a resin, such as carbon powder and a binder (solvent). A mixture prepared by injection molding or a plate of titanium or stainless steel plated with gold can be used.
- a fuel gas flow region 8 through which fuel gas (first reaction gas) flows is provided on one main surface (hereinafter referred to as an inner surface) of the anode separator 6A that is in contact with the anode electrode 4A.
- the other main surface (hereinafter referred to as an outer surface) is provided with a groove-like cooling medium flow region 10 through which the cooling medium flows.
- an oxidant gas flow region 9 for flowing an oxidant gas (second reaction gas) is provided on one main surface (hereinafter referred to as an inner surface) that contacts the cathode electrode 4B of the cathode separator 6B.
- the other main surface (hereinafter referred to as the outer surface) is provided with a groove-like cooling medium flow region 10 through which the cooling medium flows.
- manifold holes such as a fuel gas supply manifold hole 31 and a cooling medium supply manifold hole 35 are provided in the peripheral portions of the main surfaces of the anode separator 6A and the cathode separator 6B.
- shape of the cooling medium flow region 10 is arbitrary, and for example, it may be formed in a so-called straight shape, may be formed in a serpentine shape, or may be formed in a spiral shape.
- the cooling medium flow region 10 may be provided on the outer surface of at least one of the anode separator 6A and the cathode separator 6B in one fuel cell 100.
- the fuel gas and the oxidant gas are respectively supplied to the anode electrode 4A and the cathode electrode 4B, and these gases react to generate electricity and heat to generate water. Further, the generated heat is recovered by flowing a cooling medium such as cooling water through the cooling medium flow area 10.
- the fuel cell 100 configured as described above may be used as a single cell (cell), or a plurality of fuel cells 100 may be stacked and used as the fuel cell stack 61.
- FIG. 3 is a schematic diagram showing a schematic configuration of the inner surfaces of the anode separator and the cathode separator in the polymer electrolyte fuel cell shown in FIG. 4 is a perspective view of the polymer electrolyte fuel cell shown in FIG. 2 viewed from the thickness direction of the anode separator.
- the vertical direction in the separator is represented as the vertical direction in the figure, and the groove through which the reaction gas flows is indicated by a single thick line.
- the anode separator 6A has a plate shape and is substantially rectangular.
- a plurality of through holes are formed in the peripheral portion of the main surface of the anode separator 6 ⁇ / b> A, and these through holes constitute manifold holes such as the fuel gas supply manifold hole 31.
- a fuel gas supply manifold hole 31 is provided in an upper portion of one side portion (hereinafter referred to as a first side portion) of the anode separator 6A, and an oxidant gas discharge manifold is provided in the lower portion thereof.
- a hole 34 is provided.
- a cooling medium supply manifold hole 35 is provided inside the upper portion of the fuel gas supply manifold hole 31.
- an oxidant gas supply manifold hole 33 is provided in the upper part of the other side part (hereinafter referred to as the second side part) of the anode separator 6A, and a fuel gas discharge manifold hole 32 is provided in the lower part thereof. Is provided.
- a cooling medium discharge manifold hole 36 is provided inside the lower portion of the fuel gas discharge manifold hole 32.
- the cathode separator 6B has a plate shape and is substantially rectangular.
- a plurality of through holes are formed in the peripheral portion of the main surface of the cathode separator 6B, and these through holes constitute manifold holes such as the fuel gas supply manifold hole 31 and the like.
- manifold holes such as the fuel gas supply manifold hole 31 and the like.
- a bent fuel gas flow region 8 is provided on the inner surface of the anode separator 6A so as to connect the fuel gas supply manifold hole 31 and the fuel gas discharge manifold hole 32.
- the fuel gas flow region 8 is formed in a serpentine shape as a whole when viewed from the thickness direction of the anode separator 6A.
- the fuel gas flow region 8 has a plurality of groove-shaped first straight portions 18 and one or more (here, four) first folded portions 28.
- the first straight portion 18 is formed by a flow channel and is configured so that fuel gas flows (divides).
- the first folded portion 28 is configured to reverse (turn back) the fuel gas flowing through the first straight portion 18.
- at least one of the one or more first folded portions 28 (two in the first embodiment) includes a first recessed portion 48A and a first recessed portion 48B (hereinafter referred to as a first recessed portion 48B). (Sometimes referred to as a recess 48).
- a first recess 48 is provided in each of the first folded portions 28 that first overlap the anode electrode 4A.
- the first recess 48A is provided in the first first folded portion 28 when the fuel gas flow region 8 is traced from the upstream side to the downstream side as viewed from the thickness direction of the anode separator 6A.
- the first recess 48B is provided in the fourth first turn-back portion 28 when the fuel gas flow region 8 is traced from the upstream side to the downstream side as viewed from the thickness direction of the anode separator 6A.
- the position where the first dent portion 48 is provided is the sum of the areas where the first dent portion 48 and a second dent portion 49 described later overlap, as viewed from the thickness direction of the anode separator 6A. 5% or less of the total area, which is the total area of the areas of all the first depressions 48 provided in the anode separator 6A and the areas of all the second depressions 49 provided in the cathode separator 6B. If it is, it can be provided at an arbitrary position, and the number provided can also be set arbitrarily.
- the first recess 48 may be provided only in the upstream portion of the fuel gas flow region 8.
- the upstream portion of the fuel gas flow region 8 has one end as the upstream end of the fuel gas flow region 8 and the other end as a portion satisfying the formula: L1 ⁇ ⁇ (1/2) ⁇ L2 ⁇ .
- L1 indicates the flow path length of the upstream portion of the fuel gas flow area 8
- L2 indicates the total flow path length of the fuel gas flow area 8.
- the other end of the upstream portion is more preferably a portion satisfying the formula: L1 ⁇ ⁇ (1/3) ⁇ L2 ⁇ .
- the first recess 48 is formed so as to communicate with the flow channel that forms the first straight portion 18.
- the first recess 48 is provided with a plurality of first protrusions 58.
- the first protrusion 58 is provided so as to extend from the bottom surface of the first recess 48 in the thickness direction of the anode separator 6A, and is formed in a columnar shape (precisely, a true columnar shape).
- the part between the flow-path groove which comprises the some 1st linear part 18 and a flow-path groove forms the 1st rib part 11 contact
- the portion between the channel grooves constituting the plurality of first straight portions 18 is defined as the first rib portion 11 that contacts the anode electrode 4A.
- the first protrusion 58 is formed in a substantially cylindrical shape, but is not limited thereto, and may be formed in a triangular prism shape or a quadrangular prism shape.
- the first protrusion 58 has a true circular cross section perpendicular to the thickness direction of the anode separator 6A.
- the first protrusion 58 is not limited to this and may have an elliptical shape.
- an oxidant gas flow region 9 formed in a bent shape so as to connect the oxidant gas supply manifold hole 33 and the oxidant gas discharge manifold hole 34 is formed on one main surface of the cathode separator 6B. Is provided.
- the oxidant gas flow region 9 is formed in a serpentine shape as a whole when viewed from the thickness direction of the cathode separator 6B.
- the oxidant gas flow region 9 has a plurality of groove-like second linear portions 19 and one or more (here, two) second folded portions 29.
- the second straight portion 19 is formed by a flow channel and is configured so that an oxidizing gas flows (divides).
- the second folding part 29 is configured to reverse (turn back) the oxidant gas flowing through the second linear part 19. Further, at least one (one in the first embodiment) second folded portion 29 of the one or more second folded portions 29 is provided with a second recessed portion 49.
- the second folded portion 29 that overlaps the cathode electrode 4B first that is, 1
- a second recess 49 is provided in the second folded portion 29.
- the position where the second depression 49 is provided is the sum of the areas where the first depression 48 and the second depression 49 overlap as viewed from the thickness direction of the anode separator 6A. 5% or less of the total area, which is the total area of the areas of all the first depressions 48 provided in the separator 6A and the areas of all the second depressions 49 provided in the cathode separator 6B.
- it can be provided at an arbitrary position, and the number provided can be arbitrarily set.
- the second depression 49 may be provided only in the upstream portion of the oxidant gas flow region 9.
- the upstream portion of the oxidant gas flow region 9 has one end as the upstream end of the oxidant gas flow region 9 and the other end as a portion satisfying the formula: L3 ⁇ ⁇ (1/2) ⁇ L4 ⁇ The part between them.
- L3 indicates the flow path length of the upstream portion of the oxidant gas flow area 9
- L4 indicates the total flow path length of the oxidant gas flow area 9.
- the other end of the upstream portion is more preferably a portion satisfying the formula: L3 ⁇ ⁇ (1/3) ⁇ L4 ⁇ .
- the second recess 49 is formed so as to communicate with the flow channel that forms the second straight part 19.
- a plurality of second protrusions 59 are provided in the second depression 49.
- the second protrusion 59 is provided so as to extend from the bottom surface of the second depression 49 in the thickness direction of the cathode separator 6B, and is formed in a columnar shape (precisely, a true columnar shape).
- the part between the flow-path groove which comprises the some 2nd linear part 19 and a flow-path groove forms the 2nd rib part 12 contact
- the portion between the channel grooves constituting the plurality of second linear portions 19 is defined as the second rib portion 12 that contacts the cathode electrode 4B.
- the second protrusion 59 is formed in a substantially cylindrical shape, but is not limited thereto, and may be formed in a triangular prism shape or a quadrangular prism shape.
- the second protrusion 59 has a true circular cross section perpendicular to the thickness direction of the cathode separator 6B.
- the second protrusion 59 is not limited to this, and may have an elliptical shape.
- the fuel gas flow region 8 and the oxidant gas flow region 9 are so-called parallel flows.
- the parallel flow means that the fuel gas flow region 8 and the oxidant gas flow region 9 have a portion in which the fuel gas and the oxidant gas flow so as to face each other.
- it means that the directions of the overall flow of the fuel gas and the oxidant gas from the upstream to the downstream in a macroscopic manner (as a whole) coincide with each other.
- the fuel gas flow region 8 and the oxidant gas flow region 9 follow from the upstream to the downstream of the fuel gas flow region 8 when viewed from the thickness direction of the anode separator 6A.
- the oxidant gas flowing through 19 is configured to face each other.
- the first dent 48 and the second dent 49 are disposed so as to have a portion S1 that overlaps each other when viewed from the thickness direction of the anode separator 6A. More specifically, the first dent portion 48 and the second dent portion 49 are configured such that the area (overlapping area) of the portion S1 is equal to all the first dent portions 48 (the first dent portion 48A and the first dent portion 48A provided in the anode separator 6A). 1 depression 48B) and the area of all the second depressions 49 provided in the cathode separator 6B are arranged so as to be 5% or less of the total area S. ing.
- the first recess 48 is provided in the upstream portion.
- the dew point of the fuel cell 100 in the low humidification conditions (the fuel gas flowing through the fuel gas flow region 8 and the oxidant gas flowing through the oxidant gas flow region 9 are
- a cooling medium in this case, under a temperature lower than the temperature of the cooling medium
- the water generated by the reaction of the reaction gas blocks one of the flow paths.
- the reaction gas can be supplied also to the downstream side of the blocked flow path by mixing and distributing the fuel gas in the first recess 48. For this reason, it is possible to avoid a state where power generation is not possible due to insufficient supply of fuel gas.
- the fuel cell 100 since the second recess 49 is provided in the upstream portion, the fuel cell 100 is generated by the reaction of the reaction gas when the fuel cell 100 is operated under low humidification conditions. Even when a certain channel among the plurality of channels is clogged by the generated water, the oxidant gas is mixed and distributed in the second depression 49 so that the clogged channel is blocked. The reaction gas can also be supplied to the downstream side. For this reason, it is possible to avoid a state where power generation cannot be performed due to insufficient supply of the oxidant gas.
- the fuel gas flow region 8 has a flow path downstream of the first recess 48 (the first linear portion 18 downstream of the first recess 48). ) Has a smaller number of flow paths (first straight portions 18) than the flow paths upstream of the first hollow portions 48 (first straight portions 18 upstream of the first hollow portions 48). It is formed to become. For this reason, as mentioned above, when obstruction
- the fuel gas flow region 8 and the oxidant gas flow region 9 are configured to be in parallel flow, the above-described effects are remarkable.
- the first separator is the anode separator 6A
- the second separator is the cathode separator 6B
- the first reaction gas flow region is the fuel gas flow region 8
- the second reaction gas is used.
- the flow path is the oxidant gas flow region 9, it is not limited to this.
- the first separator is a cathode separator 6B
- the second separator is an anode separator 6A
- the first reaction gas flow region is an oxidant gas flow region 9
- the second reaction gas flow region is a fuel gas flow region. It may be 8.
- the number of first depressions 48 and the number of second depressions 49 are different from each other.
- the present invention is not limited to this, and the first depression 48 and the second depression 48 are not limited thereto.
- the same number of portions 49 may be provided.
- the number of the oxidant gas flow regions 9 in the flow path on the upstream side of the second dent portion 49 (the second straight portion 19 on the upstream side of the second dent portion 49).
- the number of flow paths downstream of the second depression 49 (the second straight line portion 19 downstream of the second depression 49) is the same, but is not limited thereto.
- the flow path on the downstream side of the second dent part 49 (the second linear part 19 on the downstream side of the second dent part 49) is more than the second dent part 49.
- the number of flow paths (second straight portions 19) may be smaller than that of the upstream flow paths (second straight portions 19 upstream of the second depressions 49).
- the polymer electrolyte fuel cell of Modification 1 in Embodiment 1 is provided in all the first recesses provided in the first separator and the second separator as viewed from the thickness direction of the first separator. All the 2nd hollow parts which are currently illustrated illustrate the aspect arrange
- FIG. 5 is a schematic diagram showing a schematic configuration of the inner surfaces of the anode separator and the cathode separator in the polymer electrolyte fuel cell of Modification 1 of Embodiment 1. As shown in FIG.
- the basic configuration of the fuel cell 100 according to the first modification is the same as that of the fuel cell 100 according to the first embodiment, but the configuration of the oxidant gas flow region 9 is different.
- the oxidant gas flow region 9 is different in that it has a plurality of groove-like second linear portions 19 and four second folded portions 29.
- the two second folded portions 29 are different in that a second recessed portion 49A and a second recessed portion 49B are provided.
- the second recessed portion 49A is provided in the second folded portion 29 that first overlaps the cathode electrode 4B when the oxidant gas flow region 9 is traced from the upstream side to the downstream side as viewed from the thickness direction of the cathode separator 6B. It has been.
- the second depression 49B is provided in the second folded portion 29 that first overlaps the cathode electrode 4B when the oxidant gas flow region 9 is traced from the downstream side to the upstream side.
- the second recessed portion 49A is provided in the first second folded portion 29 when the oxidant gas flow region 9 is traced from the upstream side to the downstream side as viewed from the thickness direction of the cathode separator 6B.
- the second recessed portion 49B is provided in the fourth second folded portion 29 when the oxidant gas flow region 9 is traced from the upstream side to the downstream side.
- all the 1st hollow parts 48A and the 1st hollow part 48B (and 1st projection part 58) which are provided in the anode separator 6A, and all the cathode parts 6B are provided.
- the second dent 49A and the second dent 49B (and the second protrusion 59) are arranged so as not to overlap each other when viewed from the thickness direction of the anode separator 6A.
- the area where the cathode separator 6B and the cathode electrode 4B and the anode separator 6A and the anode electrode 4A are not in contact with each other is further reduced as compared with the conventional fuel cell. Accordingly, it is possible to further reduce electric contact resistance and reduce power generation concentration.
- the oxidant gas flow region 9 is a flow path downstream of the second recess 49 (the second linear portion 19 downstream of the second recess 49).
- the number of flow paths (second straight portions 19) is smaller than the flow paths upstream of the second hollow portions 49 (second straight portions 19 upstream of the second hollow portions 49). It is formed as follows. For this reason, as mentioned above, when obstruction
- the fuel cell system according to the second embodiment includes the polymer electrolyte fuel cell according to the first embodiment and a first reaction configured to supply the first reaction gas to the first reaction gas flow region.
- the aspect provided with the controller which controls a 1st reaction gas supply device, a 2nd reaction gas supply device, and a cooling medium supply device so that it may become lower than the temperature of the cooling medium to be performed is illustrated.
- FIG. 6 is a block diagram schematically showing a schematic configuration of the fuel cell system according to the second embodiment.
- the fuel cell system 200 includes a fuel cell stack 61 including the fuel cell 100 according to the first embodiment, a fuel gas supplier 201, and an oxidant gas supplier 202. And a coolant supply unit 203 and a controller 210.
- the controller 210 supplies the fuel gas flowing through the fuel gas flow region 8 and the oxidant gas flowing through the oxidant gas flow region 9.
- the fuel gas supply device 201, the oxidant gas supply device 202, and the cooling medium supply device 203 are configured to be controlled such that the dew point is lower than the temperature of the cooling medium flowing through the cooling medium flow region 10. ing.
- the fuel gas supply unit 201 may have any configuration as long as the fuel gas (hydrogen gas) can be supplied to the fuel cell stack 61 (fuel cell 100) while adjusting the flow rate and the humidification amount.
- the fuel gas supply device 201 for example, a device configured to supply hydrogen gas such as a hydrogen cylinder or a hydrogen storage alloy, a humidifier that humidifies water stored in a tank or the like as water vapor, or total heat exchange Or a hydrogen generator that generates a hydrogen gas by reforming a raw material such as methane and water.
- the fuel gas supply device 201 may be configured with a single hydrogen generator, or may be configured with a hydrogen generator and a humidifier or a total heat exchanger. Also good.
- the total heat exchanger may be in any form as long as the fuel gas supplied to the fuel gas flow region 8 can be humidified, for example, a separator through which the primary fluid flows, a water vapor permeable membrane, Alternatively, a static total heat exchanger in which a plurality of cells each having a separator through which a secondary fluid flows may be stacked.
- the humidification amount of the fuel gas supplied to the fuel gas flow region 8 may be reduced by reducing the area of the water vapor permeable membrane or reducing the number of stacked cells. As a result, the dew point of the fuel gas flowing through the fuel gas flow region 8 can be made lower than the temperature of the cooling medium flowing through the cooling medium flow region 10.
- a fuel cell stack 61 (an inlet of the fuel gas supply manifold 131) is connected to the fuel gas supply unit 201 via a fuel gas supply channel 71.
- the fuel gas is supplied from the fuel gas supply device 201 to the fuel gas flow region 8 via the fuel gas supply passage 71 and the fuel gas supply manifold 131.
- the oxidant gas supply unit 202 may be in any form as long as the oxidant gas (air) can be supplied to the fuel cell stack 61 (fuel cell 100) while adjusting the flow rate and the humidification amount.
- the oxidant gas supply unit 202 may be configured by a fan such as a fan or a blower and a humidifier, or may be configured by a fan or a total heat exchanger.
- the total heat exchanger may have any form as long as the oxidant gas supplied to the oxidant gas flow region 9 can be humidified, for example, a separator through which the primary fluid flows, water vapor transmission
- a static total heat exchanger in which a plurality of cells having a membrane and a separator through which a secondary fluid flows is stacked may be used.
- the humidification amount of the oxidant gas supplied to the oxidant gas flow region 9 may be reduced by reducing the area of the water vapor permeable membrane or reducing the number of stacked cells. Thereby, the dew point of the oxidant gas flowing through the oxidant gas flow region 9 can be made lower than the temperature of the cooling medium flowing through the cooling medium flow region 10.
- a fuel cell stack 61 (an inlet of the oxidant gas supply manifold 133) is connected to the oxidant gas supply unit 202 via an oxidant gas supply channel 72.
- the oxidant gas is supplied from the oxidant gas supply device 202 to the oxidant gas flow region 9 through the oxidant gas supply passage 72 and the fuel gas discharge manifold 132.
- the cooling medium supply unit 203 may be in any form as long as the cooling medium can be supplied to the cooling medium flow area 10 with its flow rate and temperature adjusted.
- the cooling medium supply unit 203 may include, for example, a flow rate regulator that adjusts the flow rate of water and a temperature regulator.
- the flow rate regulator may be constituted by a single pump or a combination of a pump and a flow rate regulating valve.
- a temperature regulator you may be comprised with the electric heater, for example.
- the fuel cell stack 61 (cooling medium supply manifold 135) is connected to the cooling medium supply unit 203 via the cooling medium supply channel 73.
- the cooling medium is supplied from the cooling medium supply unit 203 to the cooling medium flow region 10 via the cooling medium supply channel 73 and the cooling medium supply manifold 135.
- the controller 210 may be in any form as long as it is a device that controls each device constituting the fuel cell system 200.
- the controller 210 includes an arithmetic processing unit exemplified by a microprocessor, a CPU, and the like, and a storage unit configured by a memory or the like that stores a program for executing each control operation. Then, in the controller 210, the arithmetic processing unit reads out a predetermined control program stored in the storage unit and executes it, thereby processing the information and the fuel cell system 200 including these controls. Various controls are performed.
- controller 210 is not only configured as a single controller, but also configured as a controller group in which a plurality of controllers cooperate to execute control of the fuel cell system 200. I do not care.
- the controller 210 may be configured by a micro control, and may be configured by an MPU, a PLC (Programmable Logic Controller), a logic circuit, or the like.
- the controller 210 controls (reduces) the operation amount of the flow rate regulator of the cooling medium supply unit 203 to reduce the flow rate of the cooling medium flowing through the cooling medium flow region 10, thereby reducing the fuel.
- the dew point of the fuel gas flowing through the gas flow region 8 and the oxidant gas flowing through the oxidant gas flow region 9 are made lower than the temperature of the cooling medium flowing through the cooling medium flow region 10. May be.
- the controller 210 controls (increases) the operation amount of the temperature regulator to increase the temperature of the cooling medium flowing through the cooling medium flow area 10, thereby reducing the fuel gas flow area 8.
- the dew point of the flowing fuel gas and the oxidizing gas flowing through the oxidizing gas flowing region 9 may be lower than the temperature of the cooling medium flowing through the cooling medium flowing region 10.
- the fuel cell system 200 according to the second embodiment configured as described above includes the fuel cell 100 according to the first embodiment, the same operational effects as the fuel cell 100 according to the first embodiment are exhibited.
- the fuel cell system 200 according to Embodiment 2 is configured to operate the fuel cell 100 under a low humidification condition, so that its operational effects become significant.
- the form including the fuel cell 100 according to the first embodiment is adopted.
- a form including the fuel cell 100 according to the first modification of the first embodiment may be adopted.
- the polymer electrolyte fuel cell of the present invention and the fuel cell system including the same are electrically contacted between the separator and the electrode in the folded portion provided with the recess and the protrusion as compared with the conventional fuel cell. Since resistance can be reduced, it is useful in the technical field of fuel cells.
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Abstract
Description
本実施の形態1に係る高分子電解質形燃料電池は、電解質層と該電解質層を挟む一対の電極を有する電解質層-電極接合体と、板状で、電解質層-電極接合体の一対の電極のうち一方の電極と接触するように配設され、電極と接触する一方の主面に溝状の複数の第1直線部と1以上の第1折り返し部とを有し、屈曲状に形成され、第1反応ガスが通流する第1反応ガス通流領域が設けられている導電性の第1セパレータと、板状で、電解質層-電極接合体の一対の電極のうち他方の電極と接触するように配設され、電極と接触する一方の主面に溝状の複数の第2直線部と1以上の第2折り返し部とを有し、屈曲状に形成され、第2反応ガスが通流する第2反応ガス通流領域が設けられている導電性の第2セパレータと、を備え、第1セパレータには、1以上の第1折り返し部のうち、少なくとも1の第1折り返し部には、第1窪み部と該第1窪み部の底面から立設された複数の第1突起部が設けられ、第2セパレータには、1以上の第2折り返し部のうち、少なくとも1の第2折り返し部には、第2窪み部と該第2窪み部の底面から立設された複数の第2突起部が設けられ、第1セパレータの厚み方向から見て、第1セパレータに設けられている第1窪み部と、第2セパレータに設けられている第2窪み部と、が互いに重なる面積の合計である、重なり面積が、第1セパレータに設けられている全ての第1窪み部の面積と第2セパレータに設けられている全ての第2窪み部の面積との合計の面積である、総面積の5%以下である態様を例示するものである。
[燃料電池スタックの構成]
図1は、本実施の形態1に係る高分子電解質形燃料電池(以下、単に燃料電池という)を備える、燃料電池スタックの概略構成を模式的に示す斜視図である。なお、図1において、燃料電池スタックの上下方向を図における上下方向として表している。
次に、本実施の形態1に係る高分子電解質形燃料電池の構成について、図2を参照しながら説明する。
次に、アノードセパレータ6A及びカソードセパレータ6Bの構成について、図2乃至図4を参照しながら、さらに詳細に説明する。
次に本実施の形態1における変形例について、説明する。
図5は、本実施の形態1における変形例1の高分子電解質形燃料電池におけるアノードセパレータ及びカソードセパレータの内面の概略構成を示す模式図である。
本実施の形態2に係る燃料電池システムは、実施の形態1に係る高分子電解質形燃料電池と、第1反応ガスを第1反応ガス通流領域に供給するように構成されている第1反応ガス供給器と、第2反応ガスを第2反応ガス通流領域に供給するように構成されている第2反応ガス供給器と、冷却媒体を冷却媒体通流領域に供給するように構成されている冷却媒体供給器と、第1反応ガス通流領域に供給される第1反応ガスの露点及び第2反応ガス通流領域に供給される第2反応ガスの露点を冷却媒体通流領域に供給される冷却媒体の温度よりも低くなるように、第1反応ガス供給器、第2反応ガス供給器、及び冷却媒体供給器を制御する制御器と、を備える態様を例示するものである。
図6は、本実施の形態2に係る燃料電池システムの概略構成を模式的に示すブロック図である。
2A アノード触媒層
2B カソード触媒層
3A アノードガス拡散層
3B カソードガス拡散層
4A アノード電極(電極)
4B カソード電極(電極)
5 MEA(Membrane-Electrode-Assembly:電解質層-電極接合体)
6A アノードセパレータ(第1セパレータ)
6B カソードセパレータ(第2セパレータ)
7 ガスケット
8 燃料ガス通流領域
9 酸化剤ガス通流領域
10 冷却媒体通流領域
11 第1リブ部
12 第2リブ部
18 第1直線部
19 第2直線部
28 第1折り返し部
29 第2折り返し部
31 燃料ガス供給マニホールド孔
32 燃料ガス排出マニホールド孔
33 酸化剤ガス供給マニホールド孔
34 酸化剤ガス排出マニホールド孔
35 冷却媒体供給マニホールド孔
36 冷却媒体排出マニホールド孔
48 第1窪み部
49 第2窪み部
58 第1突起部
59 第2突起部
61 燃料電池スタック
62 セル積層体
63 端板
64 端板
71 燃料ガス供給流路
72 酸化剤ガス供給流路
73 冷却媒体供給流路
100 燃料電池
131 燃料ガス供給マニホールド
132 燃料ガス排出マニホールド
133 酸化剤ガス供給マニホールド
134 酸化剤ガス排出マニホールド
135 冷却媒体供給マニホールド
136 冷却媒体排出マニホールド
200 燃料電池システム
201 燃料ガス供給器
202 酸化剤ガス供給器
203 冷却媒体供給器
210 制御器
Claims (8)
- 電解質層と該電解質層を挟む一対の電極を有する電解質層-電極接合体と、
板状で、前記電解質層-電極接合体の前記一対の電極のうち一方の電極と接触するように配設され、前記電極と接触する一方の主面に溝状の複数の第1直線部と1以上の第1折り返し部とを有し、屈曲状に形成され、第1反応ガスが通流する第1反応ガス通流領域が設けられている導電性の第1セパレータと、
板状で、前記電解質層-電極接合体の前記一対の電極のうち他方の電極と接触するように配設され、前記電極と接触する一方の主面に溝状の複数の第2直線部と1以上の第2折り返し部とを有し、屈曲状に形成され、第2反応ガスが通流する第2反応ガス通流領域が設けられている導電性の第2セパレータと、を備え、
前記第1セパレータには、1以上の前記第1折り返し部のうち、少なくとも1の第1折り返し部には、第1窪み部と該第1窪み部の底面から立設された複数の第1突起部が設けられ、
前記第2セパレータには、1以上の前記第2折り返し部のうち、少なくとも1の第2折り返し部には、第2窪み部と該第2窪み部の底面から立設された複数の第2突起部が設けられ、
前記第1セパレータの厚み方向から見て、前記第1セパレータに設けられている前記第1窪み部と、前記第2セパレータに設けられている前記第2窪み部と、が互いに重なる面積の合計である重なり面積が、前記第1セパレータに設けられている全ての前記第1窪み部の面積と前記第2セパレータに設けられている全ての前記第2窪み部の面積との合計の面積である総面積の5%以下である、高分子電解質形燃料電池。 - 前記第1セパレータの厚み方向から見て、前記第1セパレータに設けられている全ての前記第1窪み部と、前記第2セパレータに設けられている全ての前記第2窪み部と、が互いに重ならないように配置されている、請求項1に記載の高分子電解質形燃料電池。
- 前記第1窪み部は、前記第1反応ガス通流領域の上流部分に設けられている、請求項1又は2に記載の高分子電解質形燃料電池。
- 前記第2窪み部は、前記第2反応ガス通流領域の上流部分に設けられている、請求項1~3のいずれか1項に記載の高分子電解質形燃料電池。
- 前記第1反応ガス通流領域と前記第2反応ガス通流領域は、並行流となるように、かつ、前記第1セパレータの厚み方向から見て、前記第1反応ガス通流領域の上流から下流に辿った場合に前記電極と最初に重なる前記第1直線部を通流する前記第1反応ガスと、前記第2反応ガス通流領域の上流から下流に辿った場合に前記電極と最初に重なる前記第2直線部を通流する前記第2反応ガスと、が、互いに対向するように構成され、
前記第1窪み部は、前記第1セパレータの厚み方向から見て、前記第1反応ガス通流領域の上流から下流に辿った場合に、前記一方の電極と最初に重なる前記第1折り返し部に設けられ、
前記第2窪み部は、前記第2セパレータの厚み方向から見て、前記第2反応ガス通流領域の上流から下流に辿った場合に、前記他方の電極と最初に重なる前記第2折り返し部に設けられている、請求項1~4のいずれか1項に記載の高分子電解質形燃料電池。 - 前記第2窪み部の方が、前記第1窪み部よりも設けられている数が多い、請求項1~5のいずれか1項に記載の高分子電解質形燃料電池。
- 前記第1セパレータ及び前記第2セパレータの少なくとも一方のセパレータの前記電極と接触しない他方の主面には、冷却媒体が通流する冷却媒体通流領域が設けられている、請求項1~6のいずれか1項に記載の高分子電解質形燃料電池。
- 請求項7に記載の高分子電解質形燃料電池と、
前記第1反応ガスを前記第1反応ガス通流領域に供給するように構成されている第1反応ガス供給器と、
前記第2反応ガスを前記第2反応ガス通流領域に供給するように構成されている第2反応ガス供給器と、
前記冷却媒体を前記冷却媒体通流領域に供給するように構成されている冷却媒体供給器と、
前記第1反応ガス通流領域に供給される前記第1反応ガスの露点及び前記第2反応ガス通流領域に供給される前記第2反応ガスの露点を前記冷却媒体通流領域に供給される前記冷却媒体の温度よりも低くなるように、前記第1反応ガス供給器、前記第2反応ガス供給器、及び前記冷却媒体供給器を制御する制御器と、を備える、燃料電池システム。
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CN201280001552.3A CN103119767B (zh) | 2011-09-21 | 2012-03-02 | 高分子电解质型燃料电池及具备其的燃料电池系统 |
US13/701,796 US9287574B2 (en) | 2011-09-21 | 2012-03-02 | Polymer electrolyte fuel cell and fuel cell system including the same |
JP2012552187A JP5204932B1 (ja) | 2011-09-21 | 2012-03-02 | 高分子電解質形燃料電池及びそれを備える燃料電池システム |
EP12790778.0A EP2760072B1 (en) | 2011-09-21 | 2012-03-02 | Polymer electrolyte fuel cell and fuel cell system provided with same |
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PCT/JP2012/001469 WO2013042283A1 (ja) | 2011-09-21 | 2012-03-02 | 高分子電解質形燃料電池及びそれを備える燃料電池システム |
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US (1) | US9287574B2 (ja) |
EP (1) | EP2760072B1 (ja) |
JP (1) | JP5204932B1 (ja) |
CN (1) | CN103119767B (ja) |
WO (1) | WO2013042283A1 (ja) |
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KR101806620B1 (ko) * | 2015-09-23 | 2017-12-07 | 현대자동차주식회사 | 연료전지 스택 |
RU2018130819A (ru) * | 2016-02-11 | 2020-03-11 | Клингенбург Гмбх | Перекрестноточный пластинчатый тепло- и/или влагообменник |
DE102016121954A1 (de) * | 2016-11-15 | 2018-05-17 | Audi Ag | Bipolarplatte, Brennstoffzellenstapel und ein Kraftfahrzeug |
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- 2012-03-02 CN CN201280001552.3A patent/CN103119767B/zh active Active
- 2012-03-02 EP EP12790778.0A patent/EP2760072B1/en active Active
- 2012-03-02 WO PCT/JP2012/001469 patent/WO2013042283A1/ja active Application Filing
- 2012-03-02 US US13/701,796 patent/US9287574B2/en active Active
- 2012-03-02 JP JP2012552187A patent/JP5204932B1/ja active Active
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See also references of EP2760072A4 |
Also Published As
Publication number | Publication date |
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CN103119767A (zh) | 2013-05-22 |
US9287574B2 (en) | 2016-03-15 |
US20130122397A1 (en) | 2013-05-16 |
JPWO2013042283A1 (ja) | 2015-03-26 |
EP2760072B1 (en) | 2017-09-06 |
JP5204932B1 (ja) | 2013-06-05 |
EP2760072A1 (en) | 2014-07-30 |
EP2760072A4 (en) | 2015-02-25 |
CN103119767B (zh) | 2016-11-09 |
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