WO2004038840A1 - 燃料電池 - Google Patents
燃料電池 Download PDFInfo
- Publication number
- WO2004038840A1 WO2004038840A1 PCT/JP2003/013755 JP0313755W WO2004038840A1 WO 2004038840 A1 WO2004038840 A1 WO 2004038840A1 JP 0313755 W JP0313755 W JP 0313755W WO 2004038840 A1 WO2004038840 A1 WO 2004038840A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- communication hole
- cooling medium
- outlet
- inlet
- flow path
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0247—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the form
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
- H01M8/0263—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant having meandering or serpentine paths
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/02—Details
- H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
- H01M8/0267—Collectors; Separators, e.g. bipolar separators; Interconnectors having heating or cooling means, e.g. heaters or coolant flow channels
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/241—Grouping of fuel cells, e.g. stacking of fuel cells with solid or matrix-supported electrolytes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2457—Grouping of fuel cells, e.g. stacking of fuel cells with both reactants being gaseous or vaporised
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2465—Details of groupings of fuel cells
- H01M8/2483—Details of groupings of fuel cells characterised by internal manifolds
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04007—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids related to heat exchange
- H01M8/04029—Heat exchange using liquids
-
- 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
-
- 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
- H01M8/1007—Fuel cells with solid electrolytes with both reactants being gaseous or vaporised
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Definitions
- the present invention relates to a fuel cell having an electrolyte-electrode assembly in which an electrolyte is sandwiched between an anode electrode and a cathode electrode, wherein the electrolyte-electrode assembly and the separator are alternately stacked.
- a polymer electrolyte fuel cell employs a polymer electrolyte membrane composed of a polymer ion exchange membrane.
- This fuel cell is composed of an electrolyte membrane and an electrode structure, which are provided on both sides of a solid polymer electrolyte membrane with an anode electrode and a power sword electrode each consisting of an electrode catalyst and a porous carbon. (Bipolar plate).
- a fuel cell stack in which a predetermined number of such fuel cells are stacked is used.
- a fuel gas (reaction gas) supplied to the anode electrode for example, a gas mainly containing hydrogen (hereinafter also referred to as a hydrogen-containing gas) is ionized on the electrode catalyst. Then, it moves to the cathode electrode side through the electrolyte membrane. The electrons generated during that time are taken out to an external circuit and used as DC electric energy.
- an oxidizing gas (reactive gas) for example, a gas mainly containing oxygen or air (hereinafter also referred to as an oxygen-containing gas) is supplied to the force source electrode. Hydrogen ions, electrons and oxygen react to produce water.
- a fuel gas flow path for flowing a fuel gas is provided in the plane of the anode-side separator so as to flow the fuel gas in opposition to the anode electrode.
- An oxidizing gas flow path (reactive gas flow path) for flowing the oxidizing gas is provided facing the cathode electrode.
- the anode side separator A cooling medium flow path for flowing a cooling medium is provided between the evening and the force side separator in a plane direction of the separator.
- This type of separation is usually made of a carbon-based material, but it has been pointed out that the carbon-based material cannot be made thinner due to factors such as strength. Therefore, recently, a metal plate separator (hereinafter, also referred to as a metal separator) that has higher strength and is easily thinner than this type of carbon separator is used, and the metal separator is pressed.
- a metal plate separator hereinafter, also referred to as a metal separator
- JP-A-8-222 a device for reducing the size and weight of the entire fuel cell has been devised (JP-A-8-222). See No. 237).
- the fuel cell 1 shown in FIG. 28 includes an electrolyte membrane / electrode structure 5 in which an electrolyte membrane 4 is interposed between an anode electrode 2 and a force source electrode 3, and the electrolyte membrane / electrode structure 5 It has a pair of metal separators 6a and 6b to be sandwiched.
- a fuel gas flow path 7a for supplying a fuel gas for example, a hydrogen-containing gas
- a fuel gas for example, a hydrogen-containing gas
- An oxidizing gas channel 7 b for supplying an oxidizing gas for example, an oxygen-containing gas such as air
- the metal separators 6a and 6b are provided with flat portions 8a and 8b which are in contact with the anode electrode 2 and the force sword electrode 3, and the back surfaces of the flat portions 8a and 8b (the contact surfaces).
- the cooling medium passages 9a and 9b for flowing the cooling medium are formed on the side opposite to the surface).
- the cooling medium flow paths 9a when the flow path shapes of the fuel gas flow path 7a and the oxidizing gas flow path 7b are set, the cooling medium flow paths 9a, The flow path shape of 9b is determined.
- the cooling medium flow path 9a , 9b the flow path shape is significantly restricted.
- the cooling medium cannot flow uniformly over the entire surface of the metal separators 6a and 6b in the plane direction, and it becomes difficult to uniformly cool the electrode surfaces and obtain stable power generation performance. Therefore, for example, Japanese Patent Application Laid-Open No.
- 2000-753995 discloses that two metal plates composed of a metal separator and formed with irregularities to form a gas flow path, and between the two metal plates There is disclosed a separator for a fuel cell, which has an intermediate metal plate formed on the front and back surfaces of the metal plate with irregularities formed therebetween.
- a metal separator is formed between two metal plates forming a gas flow path, and is cooled between the two metal plates. It has a total of three metal plates, including one intermediate metal plate that forms the drainage flow path. Therefore, especially when a large number of metal separators are stacked to form a fuel cell stack, the number of parts is considerably increased, and the size of the metal separators in the stacking direction is increased. However, there is a problem that the size is increased. Disclosure of the invention
- the present invention solves this kind of problem, and provides a fuel cell capable of uniformly flowing a cooling medium in the plane of a separator with a simple configuration and ensuring good power generation performance.
- the purpose is to do.
- the separator laminated alternately with the electrolyte electrode structure includes at least first and second metal plates laminated to each other.
- the first metal plate provides an oxidizing gas flow path including a flow path that supplies and bends the oxidizing gas along the cathode electrode, while the second metal plate supplies a fuel gas along the anode electrode.
- a fuel gas flow path including a supply and bending flow path is provided.
- the cooling medium is divided and supplied from the cooling medium inlet communication hole to the two or more inlet puffers, and then the two or more outlets pass through the linear flow channel. It is introduced into the buffer section and discharged to the cooling medium outlet communication hole. Therefore, the cooling medium can flow uniformly in the separator surface, And stable power generation performance can be obtained.
- the separator which is alternately stacked with the electrolyte electrode structure includes at least first and second metal plates stacked with each other, and the first and second metal plates are stacked.
- a cooling medium passage is formed between the metal plates.
- the cooling medium passage has two or more inlet buffers communicating with the cooling medium inlet communication hole via the inlet communication passage, and two or more outlets communicating with the cooling medium outlet communication hole via the outlet communication passage.
- first and second inlet communication passages connecting the at least two inlet buffer portions to the cooling medium inlet communication holes have different numbers of respective flow channels, while the at least two outlet buffer portions are connected to the cooling medium outlet communication holes.
- the first and second outlet communication flow paths connected to each other have different numbers of flow paths.
- the cooling medium is balanced in pressure in the cooling medium flow path, avoids stagnation of the flow, can maintain a desired flow velocity and a desired flow state, and can flow uniformly in the separator plane. become. Therefore, stable power generation performance can be obtained by uniformly cooling the entire electrode surface.
- FIG. 1 is an exploded perspective view of a main part of a fuel cell according to a first embodiment of the present invention.
- FIG. 2 is a partially sectional explanatory view of the fuel cell.
- FIG. 3 is an explanatory front view of one surface of the first metal plate.
- FIG. 4 is an explanatory perspective view of a cooling medium passage formed in the separator.
- FIG. 5 is an explanatory front view of the other surface of the first metal plate.
- FIG. 6 is an explanatory front view of the second metal plate.
- FIG. 7 is a cross-sectional view taken along a line VII-VII in FIG.
- FIG. 8 is a cross-sectional view taken along the line VIII-VIII in FIG.
- FIG. 9 is an explanatory front view of the other surface of the second metal plate.
- FIG. 10 is an exploded perspective view of a main part of a fuel cell according to a second embodiment of the present invention.
- FIG. 11 is an explanatory front view of a first metal plate constituting the fuel cell.
- FIG. 12 is an explanatory front view of a second metal plate constituting the fuel cell.
- FIG. 13 is an explanatory front view of a cooling medium passage formed in a separator constituting the fuel cell.
- FIG. 14 is an explanatory front view of a first metal plate constituting the fuel cell according to the third embodiment of the present invention.
- FIG. 15 is an explanatory front view of a second metal plate constituting the fuel cell.
- FIG. 16 is an explanatory front view of a cooling medium passage formed between the first and second metal plates.
- FIG. 17 is an explanatory front view of a first metal plate constituting the fuel cell according to the fourth embodiment of the present invention.
- FIG. 18 is an explanatory front view of a second metal plate constituting the fuel cell.
- FIG. 19 is an explanatory front view of a cooling medium flow path formed between the first and second metal plates.
- FIG. 20 is an explanatory front view of a first metal plate constituting the fuel cell according to the fifth embodiment of the present invention.
- FIG. 21 is an explanatory front view of a second metal plate constituting the fuel cell.
- FIG. 22 is an explanatory front view of a cooling medium passage formed between the first and second metal plates.
- FIG. 23 is an exploded perspective view of a main part of a fuel cell according to a sixth embodiment of the present invention.
- FIG. 24 is an explanatory perspective view of a cooling medium passage formed in the separator.
- FIG. 25 is an explanatory diagram of each measurement position in the cooling medium flow path.
- FIG. 26 is an explanatory diagram showing the relationship between the measurement positions and the flow rates in the sixth embodiment and the comparative example.
- FIG. 27 is an explanatory diagram showing the relationship between each measurement position and the temperature in the sixth embodiment and the comparative example.
- FIG. 28 is a partial cross-sectional explanatory view of a fuel cell according to a conventional technique.
- FIG. 1 is an exploded perspective view of a main part of a fuel cell 10 according to a first embodiment of the present invention
- FIG. 2 is a partially sectional explanatory view of the fuel cell 10.
- the fuel cell 10 is configured by laminating the electrolyte membrane / electrode structure 12 and the separator 13 horizontally and alternately, and the separator 13 has a horizontally long shape that is laminated to each other.
- the first and second metal plates 14 and 16 are provided.
- one end of fuel cell 10 in the direction of arrow B communicates with each other in the direction of arrow A (horizontal direction), which is a stacking direction, to form an oxidizing gas, for example, an oxygen-containing gas.
- the gas outlet communication holes 24b are arranged in the direction of arrow C (vertical direction).
- the other end of fuel cell 10 in the direction of arrow B communicates with each other in the direction of arrow A to provide fuel gas inlet communication hole 24a for supplying fuel gas, and cooling for discharging the cooling medium.
- a medium outlet communication hole 22b and an oxidizing gas outlet communication hole 20b for discharging the oxidizing gas are arranged in the direction of arrow C.
- the electrolyte membrane / electrode structure 12 includes, for example, a solid polymer electrolyte membrane 26 in which a perfluorosulfonic acid thin film is impregnated with water, and an anode electrode 2 sandwiching the solid polymer electrolyte membrane 26. 8 and a force source electrode 30.
- the anode electrode 28 and the force sword electrode 30 are uniformly coated on the surface of the gas diffusion layer with a gas diffusion layer composed of a pressure gasper, and porous carbon particles having a platinum alloy supported on the surface. Electrode catalyst layer. The electrode catalyst layers are bonded to both surfaces of the solid polymer electrolyte membrane 26.
- an oxidizing gas flow path 32 is provided on a surface 14 a of the first metal plate 14 facing the electrolyte membrane / electrode structure 12, and the oxidizing agent
- the gas passage 32 communicates with the oxidizing gas inlet communication hole 20a and the oxidizing gas outlet communication hole 20b.
- the oxidizing gas passage 32 is provided with an inlet buffer 34 provided near the oxidizing gas inlet communicating hole 20a and the oxidizing gas outlet communicating hole 20b and an outlet.
- a buffer section 36 is provided, and the entrance buffer section 34 and the exit buffer section 36 are constituted by a plurality of embosses 34 a and 36 a.
- the oxidizing gas passage grooves 38a to 38c meander in the direction of arrow B and move in the direction of arrow C, and specifically have two return portions T1 and T2.
- a one-and-a-half reciprocating bending channel is formed in the direction of arrow B.
- the surface 14a of the first metal plate 14 covers the oxidizing gas inlet communication hole 20a, the oxidizing gas outlet communication hole 20b, and the oxidizing gas flow path 32 to seal the oxidizing gas seal.
- a linear seal 40 to be performed is provided.
- a cooling medium flow path 42 is integrally formed on the opposing surfaces 14 b and 16 a of the first metal plate 14 and the second metal plate 16. As shown in FIG. 4, the cooling medium flow path 42 is provided near both ends of the cooling medium inlet communication hole 22 a in the direction of the arrow C.
- two cooling medium buffers 44, 46 are provided.
- two outlet buffer portions 48 and 50 are provided near both ends of the outlet communication hole 22 b in the direction of arrow C.
- the inlet buffer sections 44, 46 and the outlet buffer sections 48, 50 are constituted by a plurality of embosses 44a, 46a, 48a and 50a.
- the cooling medium inlet communication hole 22a and the inlet buffer sections 44, 46 communicate with each other through two inlet flow grooves 52, 54, respectively, while the cooling medium outlet communication hole 22b, and the outlet.
- the buffer sections 48 and 50 communicate with each other via two outlet flow channels 56 and 58, respectively.
- the inlet buffer section 44 and the outlet buffer section 48 communicate with each other via linear flow grooves 60, 62, 64 and 66 extending in the direction of arrow B, and also communicate with the inlet buffer section 46.
- the outlet buffer section 50 communicates with the outlet buffer section 50 through linear flow grooves 68, 70, 72 and 74 extending in the direction of arrow B. Between the linear flow grooves 66, 68, linear flow grooves 76, 78 are provided extending a predetermined length in the direction of arrow B.
- the straight flow grooves 60 to 74 communicate with each other via straight flow grooves 80 and 82 extending in the direction of arrow C.
- the straight flow channel grooves 62 to 72 are straight flow channels extending in the direction of arrow C. While communicating with the grooves 84, 86, the linear flow grooves 64, 66, and 76 and the linear flow grooves 68, 70, and 78 intermittently in the direction of arrow C. It communicates via the extending straight channel grooves 88 and 90.
- the cooling medium flow path 42 is divided into a first metal plate 14 and a second metal plate 16, and the first and second metal plates 14, 16 are overlapped with each other, whereby A cooling medium flow path 42 is formed.
- the cooling medium flow path 4 2 is formed on the surface 14 b of the first metal plate 14 so as to avoid the oxidizing gas flow path 32 formed on the surface 14 a side. Is formed.
- the oxidizing gas channel 32 formed on the surface 14 a protrudes in a convex shape on the surface 14 b.
- the convex shape is used. Parts are not shown.
- the portion where the fuel gas flow channel 96 formed on the surface 16b protrudes from the surface 16a is omitted.
- the surface 14 b has an inlet buffer portion 44 communicating with the cooling medium inlet communication hole 22 a through two inlet flow grooves 52, and a cooling medium outlet communication hole 2.
- 2b is provided with an outlet buffer section 50 that communicates through two outlet flow grooves 58.
- the grooves 60 a, 62 a, and 64 a are formed so as to avoid the return section T 2 and the outlet buffer section 36 of the oxidizing gas passage grooves 38 a to 38 c.
- And 66a are provided intermittently and at a predetermined length along arrow B direction.
- the outlet buffer section 50 is provided with grooves 68a, 70a, 72 so as to avoid the return section T1 and the inlet buffer section 34 of the oxidizing gas passage grooves 38a to 38c.
- a and 74a are provided at predetermined positions along the arrow B direction.
- the groove portions 60 a to 78 a constitute a part of the linear flow channel grooves 60 to 78, respectively.
- the grooves 80a to 90a constituting the linear flow grooves 80 to 90 are respectively predetermined in the direction of arrow C so as to avoid the meandering oxidizing agent gas flow grooves 38a to 38c. Over the length of
- a part of the cooling medium flow path 42 is formed on the surface 16a of the second metal plate 16 so as to avoid a fuel gas flow path 96 described later.
- An outlet buffer portion 48 communicating with the communication hole 22b is provided.
- the inlet buffer portion 46 has grooves 68 b to 74 b forming linear flow grooves 68 to 74 communicating with a predetermined length and intermittently in the direction of arrow B, and the outlet.
- Grooves 60 b to 66 b constituting the linear flow grooves 60 to 66 are set in a predetermined shape and communicate with the buffer portion 48.
- grooves 80b to 90b constituting the linear flow grooves 80 to 90 are provided so as to extend in the arrow C direction.
- the cross-sectional area of the flow channel is enlarged twice as large as that of the other parts to form the main flow channel (see Figs. 4 and 7).
- the straight channel grooves 80 to 94 are partially overlapped and distributed to the first and second metal plates 14 and 16, respectively (see FIG. 8). Between the surface 14a of the first metal plate 14 and the surface 16a of the second metal plate 16, a linear seal 40a surrounds the cooling medium flow path 42. Is equipped.
- a fuel gas channel 96 is provided on a surface 16 b of the second metal plate 16 facing the electrolyte membrane / electrode structure 12.
- the fuel gas flow path 96 has an inlet buffer 98 provided near the fuel gas inlet communication hole 24a, and an outlet buffer 100 provided near the fuel gas outlet communication hole 24b.
- the inlet buffer section 98 and the outlet buffer section 100 are constituted by a plurality of embosses 98 a and 100 a, for example, three fuel gas flow grooves 100 2 a and 102 b And through 102c.
- the fuel gas flow grooves 10 2 a to 10 2 c meander in the direction of the arrow B and move in the direction of the arrow C.
- substantially one and a half It constitutes a bent channel.
- a linear seal 40b is provided on the surface 16b so as to surround the fuel gas flow path 96.
- an oxidant gas such as an oxygen-containing gas is supplied to the oxidant gas inlet communication hole 20a, and a fuel gas such as a hydrogen-containing gas is supplied to the fuel gas inlet communication hole 24a. Supplied. Further, a cooling medium such as pure water, ethylene glycol, or oil is supplied to the cooling medium inlet communication hole 22a.
- the oxidizing gas is introduced into the oxidizing gas passage 32 of the first metal plate 14 from the oxidizing gas inlet communication hole 20a. In the oxidizing gas passage 32, as shown in FIG.
- the oxidizing gas is first introduced into the inlet buffer 34, and then dispersed in the oxidizing gas passage grooves 38a to 38c. . Therefore, the oxidizing gas moves along the force electrode 30 of the electrolyte membrane / electrode structure 12 while meandering through the oxidizing gas flow grooves 38a to 38c.
- the fuel gas is introduced into the fuel gas passage 96 of the second metal plate 16 from the fuel gas inlet communication hole 24a.
- this fuel gas flow channel 96 as shown in FIG. 9, after the fuel gas is once introduced into the inlet buffer portion 98, it is dispersed in the fuel gas flow channel grooves 102a to 102c. Further, the fuel gas meanders through the fuel gas flow grooves 102 a to 102 c and moves along the anode electrode 28 of the electrolyte membrane / electrode structure 12.
- the oxidizing gas supplied to the force electrode 30 and the fuel gas supplied to the anode 28 are subjected to an electrochemical reaction in the electrode catalyst layer. Is consumed and power is generated.
- the oxidizing gas supplied to and consumed by the force source electrode 30 is discharged from the outlet buffer 36 to the oxidizing gas outlet communication hole 20b.
- the fuel gas supplied to the anode electrode 28 and consumed is discharged from the outlet buffer section 100 to the fuel gas outlet communication hole 24b.
- the cooling medium supplied to the cooling medium inlet communication hole 22 a is introduced into the cooling medium flow path 42 formed between the first and second metal plates 14 and 16.
- the cooling medium flow path 42 has an inlet buffer section 44 through inlet flow grooves 52, 54 extending in the direction of arrow C from the cooling medium inlet communication hole 22a. , 46, a cooling medium is once introduced.
- the cooling medium introduced into the inlet buffer sections 44, 46 is dispersed in the linear flow channels 60 to 66 and 68 to 74 and moves in the horizontal direction (the direction of arrow B). A part is supplied to the straight channel grooves 80-90 and 76,78. Therefore, after the cooling medium is supplied over the entire power generation surface of the electrolyte membrane / electrode structure 12, the cooling medium is The liquid is once introduced into the buffer sections 48 and 50, and further discharged to the cooling medium outlet communication holes 22b through the outlet flow channels 56 and 58.
- the cooling medium flow path 42 formed between the first and second metal plates 14 and 16 has two inlets communicating with the cooling medium inlet communication holes 22 a. Buffer portions 44 and 46 and two output buffer portions 48 and 50 communicating with the cooling medium outlet communication holes 22b are provided.
- the cooling medium branches from the cooling medium inlet communication hole 22 a in the direction of arrow C and is once introduced into the inlet buffers 44, 46, and then flows through the linear flow grooves 60 to 90.
- the cooling medium can flow uniformly along the entire surface of the separator 13, uniformly cooling the power generation surface of the electrolyte membrane / electrode structure 12, and as a whole the fuel cell 10. Stable power generation performance can be obtained.
- a part of the cooling medium flow path 42 is formed corresponding to a position avoiding the oxidizing gas flow path 32 pressed from the surface 14a side.
- an inlet buffer section 44 is provided below the cooling medium inlet communication hole 22 a avoiding the inlet buffer section 34, and cooling is performed avoiding the outlet buffer section 36.
- An outlet buffer section 50 is provided above the medium outlet communication hole 22b.
- grooves 60 a to 90 a each having a predetermined shape are formed avoiding the meandering oxidizing gas flow grooves 38 a to 38 c (see FIGS. 3 and 5). ).
- the oxidizing gas flow path 32 and the cooling medium flow path 42 can be formed on both surfaces 14 a and 14 of the first metal plate 14, respectively.
- a part of the cooling medium flow path 42 is formed on the surface 16a of the second metal plate 16 so as to avoid the fuel gas flow path 96 formed on the surface 16b.
- an inlet buffer 46 is provided above the cooling medium inlet communication hole 22a so as to avoid the outlet buffer 100, and the inlet buffer 98 is evaded.
- An outlet buffer section 48 is provided below the cooling medium outlet communication hole 22b.
- the grooves 60b to 90b are set in a predetermined shape so as to avoid the meandering fuel gas flow grooves 102a to 102c (see FIGS. 6 and 9).
- the first A cooling medium flow path 42 and a fuel gas flow path 96 can be formed on both surfaces 16 a and 16 b of the two metal plates 16 respectively.
- the first and second metal plates 14 and 16 are provided with the oxidizing gas channel 32 and the fuel gas channel 96, respectively, so that the channel shape of the cooling medium channel 42 is formed.
- the restricted parts can complement each other. Therefore, it is possible to reliably form the cooling medium flow path 42 having a desired shape in the separator 13 with a simple configuration.
- FIG. 10 is an exploded perspective view of a main part of a fuel cell 110 according to a second embodiment of the present invention. Note that the same components as those of the fuel cell 10 according to the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. Similarly, detailed descriptions of the third to sixth embodiments described below are omitted.
- the electrolyte membrane / electrode structure 12 and the separator 112 are alternately stacked, and the separator 112 is a first and second metal plate 1 that are stacked on each other. 14 and 1 16 are provided.
- An oxidizing gas inlet communication hole 20a, a cooling medium inlet communication hole 22a, and an oxidizing gas outlet communication hole 2Ob are provided at one edge of the fuel cell 10 in the direction of arrow B.
- a fuel gas inlet communication hole 24a, a cooling medium outlet communication hole 22b, and a fuel gas outlet communication hole 24b are provided at the other end of the fuel cell 10 in the direction of arrow B.
- an oxidizing gas channel 118 is provided on a surface 114 a of the first metal plate 114 facing the force source electrode 30.
- the oxidizing gas flow path 1 18 has an inlet buffer section 34 communicating with the oxidizing gas inlet communication hole 20 a via two inlet flow grooves 120, and an oxidizing gas outlet communication hole 2.
- 0b is provided with an outlet buffer section 36 that communicates with two outlet flow channels 1 2 2.
- the inlet buffer section 34 and the outlet buffer section 36 are close to each other, and are formed through oxidizing gas flow grooves 1 24 a, 124 b, and 124 c that are bent in a substantially U shape. Communicate.
- a cooling medium flow path 126 is formed between the first and second metal plates 114, 116, and a surface 1 of the second metal plate 116 facing the anode electrode 28 is formed.
- a fuel gas channel 125 is formed in 16a. As shown in FIG. 12, the fuel gas passage 125 has an inlet buffer 98 communicating with the fuel gas inlet communication hole 24a via two inlet passage grooves 127, and a fuel gas outlet communication hole 24b.
- An outlet buffer unit 100 communicating with two outlet flow channels 129 is provided. The inlet buffer section 98 and the outlet buffer section 100 are close to each other and communicate with each other through fuel gas flow grooves 131a, 131b, and 131c that are bent in a substantially U shape.
- the cooling medium flow path 126 includes inlet buffer sections 44 and 46 provided near the cooling medium inlet communication hole 22a, and an outlet buffer provided near the cooling medium outlet communication hole 22b. Parts 48 and 50 are provided.
- the inlet buffer section 44 and the outlet buffer section 48 communicate with each other via linear flow grooves 128, 130 extending in the direction of arrow B, while the inlet buffer section 46 and the outlet buffer section 50 similarly communicate with the arrow. They communicate with each other via straight channel grooves 132 and 134 extending in the direction of mark B.
- straight flow grooves 136 and 138 are formed, and between the straight flow grooves 130 and 132, a straight flow groove 140 is formed. Is formed.
- the straight flow grooves 128 to 140 communicate with the straight flow grooves 142 and 144 extending in the direction of arrow C.
- the straight flow grooves 128 to 134 and 140 extend in the direction of arrow C.
- the straight flow grooves 130, 132, and 140 communicate with each other via straight flow grooves 150, 152 extending in the direction of arrow C.
- outlet buffers 48, 50 communicating with the cooling medium outlet communication holes 22b are provided on the surface 114b of the first metal plate 114 facing the second metal plate 116.
- grooves 128a to 140a forming linear flow grooves 128 to 140 are provided.
- straight channel grooves 146, 148, and 152 are formed along the arrow C direction.
- the surface 116b of the second metal plate 116 facing the first metal plate 114 has an inlet buffer portion 4 close to the cooling medium inlet communication hole 22a. 4, 46 are provided.
- grooves 1 28b to 140b constituting the linear flow grooves 1 28 to 140b are provided with fuel gas flow grooves 13 1a to 13 1c. It is formed avoiding the bent part of.
- linear flow grooves 14 2, 1 46, and 150 are formed extending in the direction of arrow C.
- Linear seals 40c and 40d are provided on the surfaces 114a and 116a, and a linear seal (not shown) is provided between the surfaces 114b and 116b. Is provided.
- the surface 114a of the first metal plate 114 is provided with an oxidizing gas flow path in which an input buffer portion 34 and an outlet buffer portion 36 are bent in a substantially U-shape.
- An oxidizing gas flow path 1 18 communicating with the grooves 1 2 4 a to l 2 4 c is provided, while the surface 1 16 a of the second metal plate 1 16 a has an inlet buffer section 9.
- a fuel gas flow path 125 is provided for communicating the fuel gas flow path 13 and the outlet buffer section 100 through fuel gas flow grooves 13 1 a to l 31 c bent in a substantially U-shape.
- a cooling medium flow path 126 is formed between the first and second metal plates 114, 116.
- cooling medium flow path 1 26 two inlet buffers 44, 46 communicating with the cooling medium inlet communication hole 22a, and two outlet buffers communicating with the cooling medium outlet communication hole 22b, respectively.
- Sections 48 and 50 can be provided. This makes it possible to uniformly flow the cooling medium along the surface of the separator 112, and to uniformly cool the electrode surface of the electrolyte membrane / electrode structure 12 to achieve stable battery performance. For example, the same effects as those of the first embodiment can be obtained.
- FIG. 14 is an explanatory front view of the first metal plate 160 constituting the fuel cell according to the third embodiment of the present invention.
- the surface 160 a of the first metal plate 160 faces the force source electrode 30 and communicates with the oxidizing gas inlet communication hole 20 a and the oxidizing gas outlet communication hole 20 b.
- a gas flow channel 16 2 is provided.
- the oxidizing gas flow path 1 6 2 has three oxidizing gas flow grooves 1 6 4 a to l 6 4 communicating the inlet buffer section 3 4 and the outlet buffer section 36. c, and the oxidizing gas passage grooves 1664 a to 1664 c extend in the direction of arrow C while meandering in the direction of arrow B.
- the oxidizing gas channel grooves 1664 a to l64 c are provided with four return portions and are set to have a two-and-a-half reciprocating channel structure in the direction of arrow B.
- FIG. 15 is an explanatory front view of a surface 1666a of the second metal plate 166 laminated on the first metal plate 160, which faces the anode electrode 28.
- FIG. 15 is an explanatory front view of a surface 1666a of the second metal plate 166 laminated on the first metal plate 160, which faces the anode electrode 28.
- the fuel gas passage 168 includes three fuel gas passage grooves 170a to 170c that communicate the inlet buffer 98 and the outlet buffer 100.
- the fuel gas flow channel grooves 170a to 170c extend in the direction of arrow C while meandering in the direction of arrow B, and are configured in a two-and-a-half reciprocating flow channel structure having four return portions. You.
- the cooling medium flow path 17 2 has an inlet buffer section 44, 46 communicating with the cooling medium inlet communication hole 22 a, and an outlet communicating with the cooling medium outlet communication hole 22 b.
- the buffer section 48, 50 is provided.
- the inlet buffer section 44 and the outlet buffer section 48 communicate with each other via four linear flow grooves 1 74 extending in the direction of arrow B, and the inlet buffer section 46 and the outlet buffer section 50. Communicates with four linear flow grooves 1 76 extending in the direction of arrow B.
- the cooling medium flow path 17 2 is distributed to the first and second metal plates 160, 166.
- the surface 16 O b of the first metal plate 160 has an inlet buffer portion 4 4 at a position avoiding the inlet buffer portion 34 and the outlet buffer portion 36. And an exit buffer unit 50 are provided.
- On this surface 1600b Grooves 1 74 a to 1 78 a forming the linear flow grooves 1 74 to 1 78 extending in the direction of arrow B are formed, and the linear flow grooves extending in the direction of arrow C.
- Groove portions 180a to l84a constituting 180 to 184 are formed.
- the grooves 174a to 184a are formed within a predetermined range in order to avoid the meandering oxidant gas flow grooves 164a to 164c.
- the surface 1666b of the second metal plate 1666 has an inlet buffer portion 46 and an outlet buffer portion avoiding the outlet buffer portion 100 and the inlet buffer portion 98. 4 8 are provided.
- grooves 17 4 b to 18 4 b which constitute a part of the linear flow grooves 17 4 to 18 4, are provided with fuel gas flow grooves 1 70 a to 1 It is formed at a position that does not interfere with 70 c.
- linear seals 40e and 40f are provided, and between the surfaces 160b and 166b, a linear seal (not shown) is provided. .
- first and second metal plates 16 0 and 16 6 can complement each other where the flow path shape is restricted, and the cooling medium flow path 17 as a whole has a desired flow path structure. 2, the same effects as in the first and second embodiments can be obtained.
- FIG. 17 is an explanatory front view of a first metal plate 190 of the fuel cell according to the fourth embodiment of the present invention.
- FIG. 18 is a plan view of the first metal plate 190 stacked on the first metal plate 190.
- FIG. 4 is an explanatory front view of a second metal plate 192 to be formed.
- An oxidant gas flow path 194 is formed on a surface 190a of the first metal plate 190 facing the cathode electrode 30.
- the oxidizing gas flow path 1994 has an inlet buffer 196 communicating with the oxidizing gas inlet communicating hole 20a, and an outlet buffer 1198 communicating with the oxidizing gas outlet communicating hole 20b. Is provided.
- the inlet buffer section 196 and the outlet buffer section 198 are formed by a plurality of embossments 196a and 198a, and are set to be long in the direction of arrow C.
- Six oxidizing gas flow grooves 200 communicate with the inlet buffer section 196, and the oxidizing gas flow grooves 200 extend in the direction of arrow B and then extend in the direction of arrow C.
- Each of the oxidizing gas flow grooves 202 is further branched into two, thereby obtaining six oxidizing gas flow grooves 204.
- the oxidizing gas flow grooves 204 are indicated by arrows C After bending in the direction of arrow B from the direction, it communicates with the outlet buffer section 198.
- a fuel gas flow path 206 is formed on a surface 192a of the second metal plate 192 facing the anode electrode 28.
- the fuel gas flow path 206 includes an inlet buffer portion 208 communicating with the fuel gas inlet communication hole 24a, and an outlet buffer portion 210 communicating with the fuel gas outlet communication hole 24b.
- the inlet buffer unit 208 and the outlet buffer unit 210 are formed by a plurality of embossments 208 a and 210 a, and are set to be long in the direction of arrow C.
- Six fuel gas flow grooves 2 12 communicate with the inlet buffer section 208, and after the fuel gas flow grooves 2 12 extend in the direction of arrow B, they are bent in the direction of arrow C.
- Two fuel gas flow grooves 2 14 are formed by joining two fuel gas flow grooves. After extending in the direction of the arrow B, the fuel gas flow grooves 2 14 branch into two fuel gas flow grooves 2 16 to form six fuel gas flow grooves 2 16. After 6 extends in the direction of arrow C, it bends in the direction of arrow B and communicates with the outlet buffer 210.
- a cooling medium flow path 218 is formed between the surface 190 b of the first metal plate 190 and the surface 192 b of the second metal plate 192. As shown in FIG. 19, the cooling medium flow path 2 18 communicates with the cooling medium inlet communication hole 22 a, and each of the two inlet buffer sections 2 20, 2 22 long in the direction of arrow C.
- the cooling medium outlet communication holes 22b are provided with outlet buffer portions 222, 222 elongated in the direction of the arrow C, respectively.
- the inlet buffer section 220, 222 and the outlet buffer section 222, 226 are composed of a plurality of embossments 220, 222, 222, and 222, respectively. ing.
- the inlet buffer sections 220, 222 and the outlet buffer sections 224, 226 directly communicate with each other in the direction of arrow B via six linear flow grooves 22'8, respectively.
- the surface 190 a is provided with four linear flow grooves 230 open at both ends and extending in the direction of arrow B. You.
- the cooling medium flow path 2 18 is distributed to the first and second metal plates 190, 192. As shown in FIG. 17, on the surface 190 b of the first metal plate 190, an inlet buffer portion 220 and an outlet buffer portion 226 are formed, and a linear flow channel 2 is formed. Grooves 228a, 238 and 236 &, 238a which form part of 238, 230 and 236, 238 are formed.
- an inlet buffer portion 23 and an outlet buffer portion 24 are formed on the surface 19 2 b of the second metal plate 19 2, and the linear flow channel 2 Grooves 228b, 230b and 236b, 238b, which form part of 238, 230 and 236, 238, are formed.
- Linear seals 40g and 40h are provided on the surfaces 190a and 192a, while a linear seal (not shown) is provided between the surfaces 190b and 192b.
- the number of grooves in the oxidizing gas flow path 194 and the fuel gas flow path 206 is changed from six to three, and further to six. Therefore, the inlet buffer section 208 and the outlet buffer section 210 for the oxidizing gas, the inlet buffer section 220 and the outlet buffer section 222 for the fuel gas, and the inlet buffer section for the cooling medium 22 0, 22 2 and the outlet buffer sections 2 24, 2 26 are respectively elongated in the direction of arrow C. Therefore, the oxidizing gas, the fuel gas, and the cooling medium can be more uniformly and smoothly supplied along the electrode surface.
- FIG. 20 is an explanatory front view of a first metal plate 240 constituting a fuel cell according to a fifth embodiment of the present invention
- FIG. FIG. 4 is an explanatory front view of a second metal plate 242 to be used.
- An oxidant gas channel 244 is formed on a surface 240a of the first metal plate 240 facing the cathode electrode. This oxidizing gas flow path 2 4 4 The oxidizing gas passage groove 2464 is meandering one and a half rounds in the direction of arrow B to communicate the inlet buffer section 34 and the outlet buffer section 36.
- a fuel gas channel 248 is formed on a surface 242 a of the second metal plate 242 facing the anode electrode 28.
- the fuel gas flow channel 248 includes three fuel gas flow channels 250, and the fuel gas flow channels 250 meander two and a half times in the direction of arrow B to form the inlet buffer portion 98. It communicates with the exit buffer unit 100.
- a cooling medium flow passage 2552 is formed between the first and second metal plates 240, 242, a cooling medium flow passage 2552 is formed.
- the cooling medium flow path 25 2 communicates with the cooling medium inlet communication hole 22 a
- the inlet buffer section includes a plurality of embosses 25 4 a and 25 56 a, respectively.
- 25 4 and 25 6 and an outlet buffer section 2 58 and 260 which communicates with the cooling medium outlet communication hole 2 2 b and is composed of a plurality of embosses 2 58 a and 260 a, respectively.
- the inlet buffer sections 254, 256 and the outlet buffer sections 258, 260 are in direct communication with each other by four linear flow grooves 262 extending in the direction of arrow B.
- One end communicates with the inlet buffer section 256, the other end terminates near the outlet buffer section 260, and two straight flow channel grooves 264, and one end connects to the outlet buffer section 258.
- a channel groove 268 is provided.
- a linear flow channel 270 elongated in the direction of arrow C is provided in the vicinity of the inlet buffer sections 254, 256 and the vicinity of the outlet buffer sections 258, 260.
- eight linear flow grooves 272 each having a predetermined length in the direction of arrow C are formed between the linear flow grooves 270.
- the cooling medium flow path 252 is distributed to the opposing surfaces 240b, 242b of the first and second metal plates 240, 242.
- an inlet buffer portion 2454 and an outlet buffer portion 260 are provided on the surface 240 b of the first metal plate 240, and the linear flow channel 26 Grooves 2 62 2 a to 2 72 a forming a part of 2-27 2 are formed.
- an inlet buffer portion 256 and an outlet buffer portion 258 are formed on the surface 242 b of the second metal plate 242, and the linear flow channel 2 Grooves 262-2b-2727b that form a part of 62-2272 are formed.
- linear seals 40i and 40j are provided, while between the surfaces 240b and 242b, a linear seal (not shown) is provided. .
- the first and second metal plates 240 and 242 have oxidizing gas channels 244 and fuel gas channels 248 having different channel shapes, respectively. However, even when the cooling medium flow path 25 2 having a predetermined shape can be reliably formed between the first and second metal plates 240 and 24 2. can get.
- FIG. 23 is an exploded perspective view of a main part of a fuel cell 300 according to the sixth embodiment of the present invention.
- the electrolyte membrane / electrode structure 12 and the separator 302 are alternately laminated, and the separator 302 is composed of a first and a second metal plate laminated on each other. It has 304,306.
- the cooling medium inlet communication hole 22 a and the inlet buffer portions 44, 46 communicate with each other via the first and second inlet communication flow paths 308, 310.
- the cooling medium outlet communication hole 22b and the outlet buffer sections 48, 50 communicate with each other via the first and second outlet communication flow paths 312, 314.
- the first inlet communication channel 3108 has, for example, two channel grooves
- the second inlet communication channel 310 has, for example, six channel grooves.
- the first outlet communication channel 3 12 has six channel grooves
- the second outlet communication channel 3 14 has two channel grooves.
- the first inlet communication channel 3 08 and the second inlet communication channel 3 110 are set so that the number of respective channels is different, and it is not limited to two and six. Absent. The same applies to the first and second outlet communication channels 312 and 314.
- the first and second inlet communication passages 3 08, 3 10 that connect the cooling medium inlet communication hole 22 a with the inlet buffer portions 44, 46 are provided.
- the first inlet communication channel 308 is constituted by, for example, two channel grooves.
- the second inlet communication channel 310 is constituted by, for example, six channel grooves.
- the flow path 312 is formed of, for example, six flow grooves, while the second outlet communication flow path 314 is formed of, for example, two flow grooves.
- the position P 1 near the inlet buffer section 44 and the position P 2 near the inlet buffer section 46 the position P The flow path resistance leading to 1 becomes larger than the flow path resistance leading from the cooling medium inlet communication hole 22a to the position P2. Therefore, when the pressure of the cooling medium at the position P2 is higher than the pressure of the cooling medium at the position P1, the cooling medium can flow from the position P2 toward the position P1, and the cooling medium is stagnated. And the flow of the cooling medium from the position P2 to the position P1 in the cooling medium flow path 42 can be induced.
- the first and second inlet communication passages 3 08 and 3 10 are set to have the same number of flow grooves, and the first and second outlet communication passages 3 1 2 and 3 14 are the same.
- the flow velocity and temperature distribution in the cooling medium flow path 42 were confirmed. Confirmation was made in the area centered on the positions Pa, Pb, Pc and Pd set along the center line T connecting the cooling medium inlet communication hole 22a and the cooling medium outlet communication hole 22b. I went in.
- the positions Pa and Pd are the end positions of the cooling medium flow path 42, the distance (H) between the positions Pb and Pa, and the positions Pc and P
- the distance (H) to d is the total flow path ⁇ of the cooling medium flow path 42;
- the cooling medium can flow smoothly and reliably in the cooling medium flow path 42, and the entire power generation surface of the electrolyte membrane / electrode structure 12 can be more evenly and more reliably. It becomes possible to cool.
- the number of the channel grooves of the first inlet communication channel 310 is set to be smaller than the number of the channel grooves of the second inlet communication channel 310.
- the number of the channel grooves of the first inlet communication channel 308 may be set larger than the number of the channel grooves of the second inlet communication channel 310.
- the number of flow channel grooves is described as 2 and 6, respectively.
- the present invention is not limited to this, and it is only necessary that the number of flow channel grooves be different. Combinations are selectable.
- the present invention is not limited to the above-described first to sixth embodiments.
- three or more of the cooling medium inlet communication holes 22a and the cooling medium outlet communication holes 22b each communicate with each other.
- An inlet buffer unit and an outlet buffer unit may be provided.
- the fuel cell in the fuel cell according to the present invention, after the cooling medium is divided and supplied from the cooling medium inlet communication hole to the two or more inlet buffers between the first and second metal plates constituting the separator, the fuel cell is linearized.
- the gas is introduced into the two or more outlet buffers through the flow channel, and further discharged to the cooling medium outlet communication hole. Therefore, the cooling medium can flow uniformly in the separator surface, and the electrode surface can be uniformly cooled to obtain stable power generation performance.
- the cooling medium is provided within the cooling medium flow path as desired.
- the flow velocity and the desired flow state can be ensured.
- the cooling medium can flow uniformly within the separation surface, and the entire electrode surface can be cooled uniformly. It is possible to obtain stable power generation performance.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/533,182 US7745062B2 (en) | 2002-10-28 | 2003-10-28 | Fuel cell having coolant inlet and outlet buffers on a first and second side |
CA002497258A CA2497258C (en) | 2002-10-28 | 2003-10-28 | Fuel cell |
EP03758972A EP1557893B1 (en) | 2002-10-28 | 2003-10-28 | Fuel cell |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002-313242 | 2002-10-28 | ||
JP2002313242A JP4344513B2 (ja) | 2002-10-28 | 2002-10-28 | 燃料電池 |
JP2002333742A JP4268400B2 (ja) | 2002-11-18 | 2002-11-18 | 燃料電池 |
JP2002-333742 | 2002-11-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004038840A1 true WO2004038840A1 (ja) | 2004-05-06 |
Family
ID=32179121
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/013755 WO2004038840A1 (ja) | 2002-10-28 | 2003-10-28 | 燃料電池 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7745062B2 (ja) |
EP (1) | EP1557893B1 (ja) |
CA (1) | CA2497258C (ja) |
WO (1) | WO2004038840A1 (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2353022C1 (ru) | 2005-01-13 | 2009-04-20 | Тойота Джидоша Кабушики Кайша | Топливный элемент и сепаратор топливного элемента |
JP5082467B2 (ja) * | 2007-01-29 | 2012-11-28 | トヨタ自動車株式会社 | 燃料電池、および、燃料電池を構成するセパレータ |
KR101240976B1 (ko) * | 2010-11-12 | 2013-03-11 | 현대자동차주식회사 | 차량용 연료전지의 냉각 시스템 |
CN103907233B (zh) * | 2011-11-02 | 2016-05-04 | 日本特殊陶业株式会社 | 燃料电池 |
US9350029B2 (en) * | 2012-11-21 | 2016-05-24 | Honda Motor Co., Ltd. | Fuel cell stack |
JP5749703B2 (ja) * | 2012-12-10 | 2015-07-15 | 本田技研工業株式会社 | 燃料電池スタック |
KR101959460B1 (ko) | 2015-05-27 | 2019-03-18 | 주식회사 엘지화학 | 분리판 및 이를 포함하는 연료 전지 스택 |
CN114628721B (zh) * | 2020-12-14 | 2024-05-07 | 中国科学院大连化学物理研究所 | 一种燃料电池电堆 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000031815A1 (en) * | 1998-11-25 | 2000-06-02 | Gas Technology Institute | Sheet metal bipolar plate design for polymer electrolyte membrane fuel cells |
JP2000164230A (ja) * | 1998-11-27 | 2000-06-16 | Aisin Seiki Co Ltd | 燃料電池用セパレータ及び燃料電池 |
JP2000323149A (ja) * | 1999-05-07 | 2000-11-24 | Mitsubishi Heavy Ind Ltd | 燃料電池用セパレータ及び製造装置 |
JP2001118588A (ja) * | 1999-10-15 | 2001-04-27 | Fuji Electric Co Ltd | 固体高分子電解質型燃料電池 |
JP2002075395A (ja) | 2000-08-24 | 2002-03-15 | Toyota Motor Corp | 燃料電池用セパレータおよびそれを用いた固体高分子型燃料電池 |
US20020055031A1 (en) * | 2000-11-09 | 2002-05-09 | Honda Giken Kogyo Kabushiki Kaisha | Fuel cell |
JP2003530836A (ja) | 2000-04-12 | 2003-10-21 | ユニバーシティー オブ ロチェスター | 標的化ワクチン送達システム |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5230966A (en) * | 1991-09-26 | 1993-07-27 | Ballard Power Systems Inc. | Coolant flow field plate for electrochemical fuel cells |
JPH08222237A (ja) | 1995-02-14 | 1996-08-30 | Aisin Aw Co Ltd | 燃料電池用セパレータ |
JP3713912B2 (ja) | 1996-08-08 | 2005-11-09 | アイシン精機株式会社 | 燃料電池のガス通路板 |
CA2256276C (en) * | 1997-12-18 | 2003-04-08 | Toyota Jidosha Kabushiki Kaisha | Fuel cell and separator for the same |
US6410178B1 (en) | 1998-05-08 | 2002-06-25 | Aisin Takaoka Co., Ltd. | Separator of fuel cell and method for producing same |
JP4590047B2 (ja) | 1999-08-13 | 2010-12-01 | 本田技研工業株式会社 | 燃料電池スタック |
JP2001250569A (ja) | 2000-03-06 | 2001-09-14 | Toyota Motor Corp | 燃料電池及びその集電板 |
JP3648128B2 (ja) * | 2000-05-02 | 2005-05-18 | 本田技研工業株式会社 | 燃料電池 |
CN1293661C (zh) | 2000-12-05 | 2007-01-03 | 松下电器产业株式会社 | 高分子电解质型燃料电池及其运行方法 |
JP4516229B2 (ja) | 2001-03-06 | 2010-08-04 | 本田技研工業株式会社 | 固体高分子型セルアセンブリ |
JP4344500B2 (ja) * | 2002-01-07 | 2009-10-14 | 本田技研工業株式会社 | 燃料電池 |
-
2003
- 2003-10-28 WO PCT/JP2003/013755 patent/WO2004038840A1/ja active Application Filing
- 2003-10-28 CA CA002497258A patent/CA2497258C/en not_active Expired - Fee Related
- 2003-10-28 US US10/533,182 patent/US7745062B2/en not_active Expired - Fee Related
- 2003-10-28 EP EP03758972A patent/EP1557893B1/en not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000031815A1 (en) * | 1998-11-25 | 2000-06-02 | Gas Technology Institute | Sheet metal bipolar plate design for polymer electrolyte membrane fuel cells |
JP2000164230A (ja) * | 1998-11-27 | 2000-06-16 | Aisin Seiki Co Ltd | 燃料電池用セパレータ及び燃料電池 |
JP2000323149A (ja) * | 1999-05-07 | 2000-11-24 | Mitsubishi Heavy Ind Ltd | 燃料電池用セパレータ及び製造装置 |
JP2001118588A (ja) * | 1999-10-15 | 2001-04-27 | Fuji Electric Co Ltd | 固体高分子電解質型燃料電池 |
JP2003530836A (ja) | 2000-04-12 | 2003-10-21 | ユニバーシティー オブ ロチェスター | 標的化ワクチン送達システム |
JP2002075395A (ja) | 2000-08-24 | 2002-03-15 | Toyota Motor Corp | 燃料電池用セパレータおよびそれを用いた固体高分子型燃料電池 |
US20020055031A1 (en) * | 2000-11-09 | 2002-05-09 | Honda Giken Kogyo Kabushiki Kaisha | Fuel cell |
Non-Patent Citations (1)
Title |
---|
See also references of EP1557893A4 |
Also Published As
Publication number | Publication date |
---|---|
EP1557893B1 (en) | 2012-03-07 |
EP1557893A4 (en) | 2008-03-12 |
EP1557893A1 (en) | 2005-07-27 |
US7745062B2 (en) | 2010-06-29 |
CA2497258A1 (en) | 2004-05-06 |
US20060003206A1 (en) | 2006-01-05 |
CA2497258C (en) | 2009-05-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4598287B2 (ja) | 燃料電池スタックおよび燃料電池スタックの運転方法 | |
JP4516229B2 (ja) | 固体高分子型セルアセンブリ | |
JP4344484B2 (ja) | 固体高分子型セルアセンブリ | |
JP5694117B2 (ja) | 燃料電池 | |
JP2000231929A (ja) | 燃料電池 | |
JP4268536B2 (ja) | 燃料電池 | |
JP2011113725A (ja) | 燃料電池 | |
JP5042507B2 (ja) | 燃料電池 | |
JP5297990B2 (ja) | 燃料電池 | |
JP4473598B2 (ja) | 燃料電池 | |
JP4081433B2 (ja) | 燃料電池 | |
WO2004038840A1 (ja) | 燃料電池 | |
JP4268400B2 (ja) | 燃料電池 | |
JP4031952B2 (ja) | 燃料電池 | |
JP4344513B2 (ja) | 燃料電池 | |
JP5274908B2 (ja) | 燃料電池スタック | |
JP2007207570A (ja) | 燃料電池 | |
JP4185734B2 (ja) | 燃料電池スタック | |
JP2002100380A (ja) | 燃料電池および燃料電池スタック | |
JP5583824B2 (ja) | 燃料電池 | |
JP4304955B2 (ja) | 固体高分子電解質形燃料電池 | |
JP2010165692A (ja) | 固体高分子型セルアセンブリ | |
JP2009054597A (ja) | 燃料電池スタックおよび燃料電池スタックの反応ガス供給方法 | |
JP5123824B2 (ja) | 燃料電池スタックおよび燃料電池スタックの運転方法 | |
JP4422505B2 (ja) | 燃料電池 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): CA US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2003758972 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2497258 Country of ref document: CA |
|
ENP | Entry into the national phase |
Ref document number: 2006003206 Country of ref document: US Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 10533182 Country of ref document: US |
|
WWP | Wipo information: published in national office |
Ref document number: 2003758972 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 10533182 Country of ref document: US |