WO2008050816A1 - Pile à combustible - Google Patents

Pile à combustible Download PDF

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Publication number
WO2008050816A1
WO2008050816A1 PCT/JP2007/070765 JP2007070765W WO2008050816A1 WO 2008050816 A1 WO2008050816 A1 WO 2008050816A1 JP 2007070765 W JP2007070765 W JP 2007070765W WO 2008050816 A1 WO2008050816 A1 WO 2008050816A1
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WO
WIPO (PCT)
Prior art keywords
reaction gas
air
hydrogen
hole
fuel cell
Prior art date
Application number
PCT/JP2007/070765
Other languages
English (en)
Inventor
Yasuo Kuwabara
Original Assignee
Toyota Jidosha Kabushiki Kaisha
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyota Jidosha Kabushiki Kaisha filed Critical Toyota Jidosha Kabushiki Kaisha
Publication of WO2008050816A1 publication Critical patent/WO2008050816A1/fr

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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
    • H01M8/04—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
    • H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
    • H01M8/04156—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying with product water removal
    • H01M8/04179—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying with product water removal by purging or increasing flow or pressure of 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
    • H01M8/24—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
    • H01M8/02—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
    • H01M8/0267—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
    • H01M8/02—Details
    • H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
    • H01M8/0273—Sealing or supporting means around electrodes, matrices or membranes with sealing or supporting means in the form of a frame
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
    • H01M8/0276—Sealing means characterised by their form
    • 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
    • H01M8/04119—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying
    • H01M8/04156—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants with simultaneous supply or evacuation of electrolyte; Humidifying or dehumidifying with product water removal
    • 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
    • H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
    • H01M8/2465—Details of groupings of fuel cells
    • H01M8/2484—Details of groupings of fuel cells characterised by external manifolds
    • 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 the structure of a fuel cell.
  • a fuel cell may be configured as a cell stack capable of providing a predetermined voltage by stacking a plurality of unit cells, each of which is composed by holding between separators a membrane electrode assembly (MEA) constructed by oppositely disposing fuel-side and oxidant-side electrodes having catalyst layers on one and the other sides of an electrolyte comprised of a polymer ion-exchange membrane.
  • MEA membrane electrode assembly
  • a fuel gas for example, hydrogen is supplied to a fuel-side electrode and an oxidant gas, for example, an oxygen gas or air is supplied to the oxidant-side electrode.
  • Hydrogen in the fuel gas supplied to the fuel-side electrode after being ionized in the catalyst layer, moves to the oxidant-side electrode through the properly humidified electrolyte. Electrons produced during this process are extracted to an external circuit and utilized as direct-current electrical energy.
  • the hydrogen ions, electrons and oxygen react with one another to produce water.
  • the electrolyte comprised of the polymer ion-exchange membrane in order to retain ion permeability.
  • the fuel cell is configured so that the electrolyte is humidified by humidifying the oxidant gas and fuel gas using a gas humidifier provided external to the fuel cell and feeding them to the fuel cell stack as steam.
  • a temperature of approximately 80°C is the optimum operating temperature of the fuel cell; if the temperature of the fuel cell is lower than this temperature," then moisture introduced to the fuel cell stack as steam or moisture produced by reaction changes to water droplets at gas flow passages within the fuel cell stack, thereby possibly clogging some of the fuel gas and oxidant gas flow passages. If some of the gas flow passages within the fuel cell stack are clogged with water droplets in this way, the oxidant gas and fuel gas are not sufficiently supplied to each unit cell of the fuel cell stack and, therefore, the - diffusivity of the fuel and oxidant gases, which are reaction gases, into the catalyst electrode layers degrades, thus resulting in the problem that the performance of electric power generation deteriorates.
  • Japanese Patent Laid-Open Publication No. 2004-327059 proposes a method wherein the inlet of a draining part connected with the internal fuel gas exhaust manifold of a fuel cell stack is positioned at a height equal to or less than the height of the lower-most part of the internal fuel gas exhaust manifold and the draining part is made to extend downwards from the inlet, so that water droplets discharged to the internal fuel gas exhaust manifold are smoothly drained out of the fuel cell stack, thereby preventing the water droplets from staying inside the unit cells (power generating cells) of the fuel cell.
  • Japanese Patent Laid-Open Publication No. 2000-90954 proposes providing an expanded part in the fuel gas or oxidant gas feed piping so that the step part thereof projecting downwards prevents droplets of water condensed inside the piping from entering gas flow passages inside the fuel cell stack.
  • Japanese Patent Laid-Open Publication No. 2003-178791 proposes a method wherein water pool portions projecting downward for temporarily storing condensed water or formed water condensed or formed in a fuel gas feeding pipe, a fuel gas discharging pipe, an air feeding pipe or an air exhaust pipe, or from a fuel cell stack, are provided at respective parts of connection of these pipes to an end plate of a fuel cell, and a drain pipe is connected to each water pool portion through an electromagnetic valve that is a drain valve opening and closing according to electric signals to drain water stored in the water pool portion out of the fuel cell.
  • Japanese Patent Laid-Open Publication Nos. 2000-90954 and 2003-178791 disclose a method wherein a stepped part projecting downwards is provided in the fuel gas or oxidant gas feed piping outside the fuel cell or water pool portions are provided at parts of connection to the end plate of the fuel cell, thereby preventing droplets of water condensed inside the piping from entering gas flow passages inside the fuel cell stack.
  • this method is problematic in that, because additional components for storing water droplets must be provided outside the fuel cell stack, the structure of the flow passages is complex and the pressure loss is large.
  • the pressure of each gas flow passage is lowered to reduce the motive energy of an auxiliary machine, such as a compressor. For this reason, it is desired that flow passage pressure loss of the fuel gas or oxidant gas be reduced as much as possible.
  • the fuel cell of the present invention comprises a cell stack formed by stacking a plurality of unit cells including a membrane electrode assembly and separators respectively disposed in contact with two surfaces of the membrane electrode assembly, and having reaction gas flow passages to direct reaction gas to be supplied to the respective surfaces of the membrane electrode assembly, and inlet ports connected to the reaction gas flow passages; a reaction gas supply passage formed by each of the inlet ports and penetrating through the cell stack; end cells disposed at the ends of the cell stack; a plurality of end members stacked on at least one end side of the cell stack; a reaction gas supply hole provided in each of the end members and connected with the reaction gas supply passage; a first member which is one of the end cells and the plurality of end members; and a second member, among the plurality of end members, which is positioned upstream of the reaction gas to the first member, wherein the circumference of the reaction gas supply hole of the second member is wider perpendicular to the flow direction of the reaction gas than the circumference of the inlet port or the
  • the bottom of the reaction gas supply hole of the second member be positioned lower, in the gravitational direction, than the bottom of the inlet port or the reaction gas supply hole of the first member. It is also preferable that the first member and the second member be adjacent to each other.
  • the second member be a fastening plate for fastening the cell stack and the first member be an insulating plate disposed between an current-collecting plate for deriving generated power from the cell stack and the fastening plate. It is also preferable that the second member be the insulating plate and the first member be the current-collecting plate. Alternatively, it is preferable that the second member be the current-collecting plate and the first member be the end cell.
  • a fuel cell of the present invention may also be configured such that it comprises a cell stack formed by stacking a plurality of unit cells including a membrane electrode assembly and separators respectively disposed in contact with two surfaces of the membrane electrode assembly, and having reaction gas flow passages which direct reaction gas to be supplied to the respective surfaces of the membrane electrode assembly, and inlet ports and outlet ports connected to the reaction gas flow passages; a reaction gas supply passage formed by each of the inlet ports and penetrating through the cell stack; a reaction gas exhaust passage formed by each of the outlet ports and penetrating through the cell stack; fastening plates attached to one and the other ends of the cell stack; a reaction gas inlet hole provided in one of the fastening plates and connected with the reaction gas supply passage; and a reaction gas outlet hole provided in either one of the fastening plates and connected with the reaction gas exhaust passage, wherein the bottom of the reaction gas inlet hole of the fastening plate is positioned lower, in the direction in which the gravitational force acts, than the bottom of the reaction gas inlet port, and
  • an current-collecting plate disposed between the cell stack and the fastening plate and having a reaction gas lead-in hole for connecting the reaction gas inlet hole with the reaction gas supply passage and a reaction gas lead-out hole for connecting the reaction gas outlet hole with the reaction gas exhaust passage, wherein the bottom of the reaction gas lead-in hole of the current-collecting plate is positioned level with or lower, in the direction in which the gravitational force acts, than the bottom of the reaction gas inlet port, and the bottom of the reaction gas lead-out hole of the current-collecting plate is positioned level with or lower, gravity-wise, than the bottom of the reaction gas outlet port.
  • an insulating plate disposed between the current-collecting plate and the fastening plate and having a reaction gas lead-in hole for communicating the reaction gas inlet hole with the reaction gas supply passage and a reaction gas lead-out hole for communicating the reaction gas outlet hole with the reaction gas exhaust passage, wherein the bottom of the reaction gas lead-in hole of the insulating plate is positioned level with or lower, in the direction in which the gravitational force acts, than the bottom of the reaction gas inlet port, and the bottom of the reaction gas lead-out hole of the insulating plate is positioned level with or lower, gravity-wise, than the bottom of the reaction gas outlet port.
  • the present invention has the advantageous effect that it is possible to prevent condensed water from flowing into the fuel cell by means of a simple configuration.
  • FIG. 1 is an elevational view of a fuel cell according to a first embodiment of the present invention
  • FIG. 2 is an air-side side view of a fuel cell according to the first embodiment of the present invention
  • FIG. 3 is a hydrogen-side side view of a fuel cell according to the first embodiment of the present invention
  • FIG. 4 is a cross-sectional plan view of the air-side fastening plate, insulating plate and current-collecting plate, the air-side separator, the membrane electrode assembly, and the hydrogen-side separator of a fuel cell according to the first embodiment of the present invention
  • FIG. 5 is a schematic view illustrating the side face of the air flow passage of the air-side separator of a fuel cell according to the first embodiment of the present invention
  • FIG. 6 is a schematic view illustrating the side face of the hydrogen flow passage of the hydrogen-side separator of a fuel cell according to the first embodiment of the present invention
  • FIG. 7A is a cross-sectional plan view of the air-side fastening plate, insulating plate and current-collecting plate, the air-side separator, the membrane electrode assembly, and the hydrogen-side separator on the air inlet- side of a fuel cell according to a second embodiment of the present invention
  • FIG. 7B is an air inlet-side side view of a fuel cell according to the second embodiment of the present invention
  • FIG. 8A is a cross-sectional plan view of the air-side fastening plate, insulating plate and current-collecting plate, the air-side separator, the membrane electrode assembly, and the hydrogen-side separator on the air outlet-side of a fuel cell, and an air-side side view of a fuel cell according to the second embodiment of the present invention
  • FIG. 8B is an air outlet-side side view of a fuel cell according to the second embodiment of the present invention.
  • FIG. 9 is a hydrogen-side side view of a fuel cell according to the second embodiment of the present invention.
  • FIG. 1OA is a cross-sectional plan view of the air- side fastening plate, insulating plate and current- collecting plate, the air-side separator, the membrane electrode assembly, and the hydrogen-side separator on the air inlet-side of a fuel cell according to a third embodiment of the present invention
  • FIG. 1OB is an air inlet-side side view of a fuel cell according to the third embodiment of the present invention
  • FIG. HA is a cross-sectional plan view of the air- side fastening plate, insulating plate and current- collecting plate, the air-side separator, the membrane electrode assembly, and the hydrogen-side separator on the air outlet-side of a fuel cell, and an air-side side view of a fuel cell according to the third embodiment of the present invention
  • FIG. HB is an air outlet-side side view of a fuel cell according to the third embodiment of the present invention
  • FIG. 12 is a hydrogen-side side view of a fuel cell according to the third embodiment of the present invention.
  • FIG. 13 is an air-side side view of a fuel cell according to a fourth embodiment of the present invention.
  • a fuel cell 11 is configured by integrally fastening a cell stack 14 constructed by stacking a plurality of unit cells 13, each of which is composed by holding between separators a membrane electrode assembly (MEA) , so as to be able to obtain a predetermined voltage, current-collecting plates 15 and 16 for deriving generated power disposed on one and the other sides of the cell stack 14, and insulating plates 17 and 18 respectively disposed on one and the other sides of the current- collecting plates, with an air-side fastening plate 19 disposed on the oxidant-side electrode side and a hydrogen- side fastening plate 20 disposed on the fuel-side electrode side.
  • MEA membrane electrode assembly
  • the current-collecting plates 15 and 16, the insulating plates 17 and 18, the air-side fastening plate 19 and the hydrogen-side fastening plate 20 are the end members of the cell stack 14.
  • Each unit cell 13 is provided with an air inlet port 30 and an air outlet port 32 penetrating through each unit cell.
  • the air-side current-collecting plate 15 and insulating plate 17 are provided with air lead-in holes 30aa and 30a and air lead-out holes 32aa and 32a the same in shape as the air inlet port 30 and the air outlet port 32 of each unit cell 13.
  • Each air inlet port 30 and each air outlet port 32 of each unit cell 13 are of approximately the same size and are disposed at the same height respectively, and respective unit cells 13 are stacked to form an air supply passage 29 and an air exhaust passage 31 extending in the direction in which the unit cells 13 are stacked.
  • the air supply passage 29 is connected with the air lead-in holes 30aa and 30a provided in the current-collecting plate 15 and the insulating plate 17 and with the an air inlet hole 25 provided in the air- side fastening plate 19, and the air exhaust passage 31 is connected with the air lead-out holes 32aa and 32a provided in the current-collecting plate 15 and the insulating plate 17 and with an air outlet hole 27 provided in the air-side fastening plate 19.
  • an air inlet pipe 21 connected with the air inlet hole 25 and an air outlet pipe 23 connected with the air outlet hole 27.
  • the orientation of stacking is approximately horizontal and that the side of the air inlet p ' ort 30 is the top above the earth, while the side of the air outlet port 32 is the bottom, nearer the ground. That is, the force of gravity pulls from the air inlet port 30 towards the air outlet port 32.
  • the air lead-in holes 30a and 30aa and the air inlet hole 25 constitute an air supply hole which is a reaction gas supply hole connected with the air inlet port 31, whereas the air lead-out holes 32a and 32aa and the air outlet hole 27 constitute an air exhaust hole which is a reaction gas exhaust hole connected with the air outlet port 32.
  • the circumference of the air inlet hole 25 in the air- side fastening plate 19 is wider perpendicular to the direction of gas flow than the circumference of each air inlet port 30 of each unit cell 13, and the air inlet hole 25 is arranged so that the bottom thereof is positioned lower, gravity-wise, than either the bottom of each air inlet hole 30 of each unit cell 13 or the bottoms of the respective air lead-in holes 30aa and 30a of the current- collecting plate 15 and the insulating plate 17.
  • This arrangement provides a step between the bottom of the air inlet hole 25 in the air-side fastening plate 19 and the bottom of the air lead-in hole 30a in the insulating plate 17.
  • the air outlet hole 27 of the air-side fastening plate 19 is arranged in such a manner that the bottom thereof is approximately level with the bottom of each air outlet hole 32 of each unit cell 13 and with the bottoms of the respective air lead-out holes 32aa and 32a of the current-collecting plate 15 and the insulating plate 17, while the fuel cell is structured so that no steps are provided between the bottom of the air outlet hole 27 in the air-side fastening plate 19 and the bottom of the air lead-out hole 32a in the insulating plate 17.
  • a hydrogen inlet port 46 and a hydrogen outlet port 48 are provided penetrating through each unit cell 13.
  • the hydrogen-side current-collecting plate 16 and insulating plate 18 are provided with a hydrogen lead-in hole 46a and a hydrogen lead-out hole 48a having the same shape as the hydrogen inlet port 46 and the hydrogen outlet port 48, respectively, of each unit cell 13.
  • Each hydrogen inlet port 46 and each hydrogen outlet port 48 of each unit cell 13 are of approximately the same size and are disposed at the same height respectively, wherein respective unit cells 13. are stacked to form a hydrogen supply passage 45 and a hydrogen exhaust passage 47 extending in the direction in which the unit cells 13 are stacked.
  • the hydrogen supply passage 45 is connected with hydrogen lead- in holes 46aa and 46a respectively provided in the current- collecting plate 16 and the insulating plate 18 and with a hydrogen inlet hole 26 provided in the hydrogen-side fastening plate 20, whereas the hydrogen exhaust passage 47 is connected with hydrogen lead-out holes 48aa and 48a respectively provided in the current-collecting plate 16 and the insulating plate 18 and with a hydrogen outlet hole 28 provided in the hydrogen-side fastening plate 20.
  • the hydrogen lead-in holes 46a and 46aa and the hydrogen inlet hole 26 constitute a hydrogen supply hole which is a reaction gas supply hole connected with the hydrogen inlet port 46, whereas the hydrogen lead-out holes 48a and 48aa and the hydrogen outlet hole 28 constitute a hydrogen exhaust hole which is a reaction gas exhaust hole connected with the hydrogen outlet port 48.
  • the hydrogen inlet hole 26 of the hydrogen-side fastening plate 20 is arranged in such a manner that the bottom thereof is positioned lower, gravity-wise, than the bottom of each hydrogen inlet port 46 of each unit cell 13 and than the bottoms of the respective hydrogen lead-in holes 46aa and 46a of the current-collecting plate 16 and the insulating plate 18. This arrangement provides a step between the bottom of the hydrogen inlet hole 26 in the hydrogen-side fastening plate 20 and the bottom of the hydrogen lead-in hole 46a in the insulating plate 18.
  • FIG. 2 is a view from the air side side of a fuel cell 11. As shown in FIG.
  • the air inlet hole 25 and the air outlet hole 27 provided in the air-side fastening plate 19 are circular, whereas the air inlet port 30 and the air outlet port 32 of each unit cell 13 and the air lead-in holes 30aa and 30a and the air lead-out holes 32aa and 32a of the current-collecting plate 15 and the insulating plate 17 are equally of horizontally elongated elliptical shape, wherein an air flow passage 41 for flowing air from the air inlet port 30 to the air outlet port 32 is provided in the air-side separator.
  • the diameter of the air inlet hole 25 is larger than the vertical widths, i.e., the widths parallel to the gravitational force, of the air inlet port 30 and the air lead-in holes 30aa and 30a, while the air inlet hole 25 is arranged so that the center position thereof and the center positions in the direction of gravitational force of the air inlet port 30 and the air lead-in holes 30aa and 30a are approximately level with each other, and the bottom of the air inlet hole 25 is positioned lower in the direction of gravitational force than the bottoms of the air inlet port 30 and the air lead- in holes 30aa and 30a.
  • the center position in the direction of gravitational force of the air inlet hole 25 and the center positions in the direction of gravitational force of the air inlet port 30 and the air lead-in holes 30aa and 30a need not necessarily be level with each other.
  • the air outlet hole 27 While the diameter of the air outlet hole 27 is larger than the vertical widths, i.e., the widths in the direction of gravitational force, of the air outlet port 32 and the air lead-out holes 32aa and 32a, the air outlet hole 27 is arranged so that the bottom thereof is approximately level with the bottoms of the air outlet port 32 and the air lead-out holes 32aa and 32a.
  • FIG. 3 is a hydrogen-side side view of a fuel cell 11.
  • the hydrogen inlet hole 26 and the hydrogen outlet hole 28 provided in the hydrogen-side fastening plate 20 are circular, whereas the hydrogen inlet port 46 and the hydrogen outlet port 48 of each unit cell 13 and the hydrogen lead-in holes 46aa and 46a and the hydrogen lead-out holes 48aa and 48a of the current- collecting plate 16 and the insulating plate 18 are of elongated rectangular shape, wherein a hydrogen flow passage 43 for flowing hydrogen from the hydrogen inlet port 46 to the hydrogen outlet port 48 is provided in the hydrogen-side separator.
  • the hydrogen inlet hole 26 is arranged in such a manner that the bottom thereof is positioned lower in the direction of gravitational force than the bottoms of the hydrogen inlet port 46 and the hydrogen air lead-in holes 46aa and 46a positioned lower in the direction of gravitational force.
  • the hydrogen outlet hole 28 is disposed at such a position that the bottom thereof is approximately level with the bottoms of the hydrogen outlet port 48 and the hydrogen lead-out holes 48aa and 48a positioned lower, gravity-wise.
  • FIG. 4 shows a cross-section of the fuel cell 11 around the air-side fastening plate 19 thereof.
  • each unit cell 13 is configured by holding two sides of a membrane electrode assembly 35 constructed by oppositely disposing a fuel-side electrode and an oxidant- side electrode having catalyst layers on two sides of an electrolyte comprised of a polymer ion-exchange membrane, between an air-side separator 33 and a hydrogen-side separator 37.
  • the air-side separator 33 is disposed on the oxidant-side electrode side of the membrane electrode assembly and the hydrogen-side separator 37 is disposed on the fuel-side electrode side.
  • the air-side separator 33 is provided with an air flow passage 41 for flowing air from the air inlet port 30 to the air outlet port 32 on the separator' s face in contact with the membrane electrode assembly 35 and with a cooling water flow passage 39 provided on the separator' s face opposite to the face whereon the air flow passage 41.
  • the air flow passage 41 is configured with a multitude of parallel flow passages for flowing air from the air inlet port 30 positioned upper in the direction of gravitational force to the air outlet port 32 positioned lower in the direction of gravitational force.
  • the hydrogen-side separator 37 is provided with, ' on the lengthwise sides thereof, an elongated rectangular hydrogen inlet port 46 and hydrogen outlet port 48 and with a hydrogen flow passage 43 for flowing hydrogen from the hydrogen inlet port 46 to the hydrogen outlet port 48 on the separator' s face in contact with the membrane electrode assembly 35.
  • the hydrogen flow passage 43 is connected, approximately horizontally, to the hydrogen inlet port 46 and the hydrogen outlet port 48 and, like the air flow passage, comprises a multitude of parallel passages at the central part of the fuel cell 11 wherein hydrogen flows downwards, gravity-wise.
  • the air-side separator 33 and the hydrogen-side separator 37 are equally provided with a cooling water inlet port 51 and a cooling water outlet port 53 which constitutes the supply and exhaust passages of cooling water.
  • air introduced from the air inlet pipe 21 provided in the air-side fastening plate 19 contains water condensed inside the air inlet pipe 21 in a state of water droplets. Because the specific gravity of these water droplets is greater than that of the air, they flow along the bottom of the air inlet pipe 21 toward the fuel cell 11.
  • the water droplets introduced together with air from the air inlet pipe 21 flow through the bottom of the air inlet hole 25 of the air-side fastening plate 19, with which the bottom of the air inlet pipe 21 is approximately level, toward the unit cells 13 of the fuel cell 11.
  • the bottom of the air lead-in hole 30a of the insulating plate 17 provided in contact with the downstream side in the direction of air flow of the air- side fastening plate 19 is positioned upper in the direction of gravitational force than the bottom of the air inlet hole 25.
  • the fuel cell 11 is configured such that the contact face of the insulating plate 17 provided adjacent to the air-side fastening plate 19, wherewith the contact face is in contact, is exposed to the end face of the air inlet hole 25 of the air-side fastening plate 19.
  • the fuel cell 11 is configured such that the wall surfaces of reaction gas flow passages are out of alignment between adjacent members.
  • moisture in a state of steam, together with air travels from the air inlet hole 25 of the air-side fastening plate 19 through the air lead-in holes 30a and 30aa respectively provided in the insulating plate 17 and the current-collecting plate 15, and is caused by the air inlet ports 30 respectively provided in the air- side separator 33 and the hydrogen-side separator 37 to go into the air supply passage 29 formed in the direction of stacking. Then, the moisture flows from the air inlet port 30 of the air-side separator 33 constituting the air supply passage 29 into the air flow passage 41, and flows downwards in the direction of gravitational force.
  • This exhaust air contains a large amount of moisture and, therefore, the moisture may flow through the bottom of the air exhaust passage 31 in a state of water droplets; however, because the bottom of the air outlet hole 27 of the air-side fastening plate 19; the bottoms of the air outlet ports 32, which form the air exhaust passage 31, respectively provided in the air-side separator 33 and the hydrogen-side separator 37; and the bottoms of the air lead-out holes 32aa and 32a respectively provided in the current-collecting plate 15 and the insulating plate 17 are arranged so as to be approximately level with one another, it is possible to allow water droplets to drain out of the fuel cell 11 without collecting in the air exhaust passage 31 and the air lead-out holes 32aa and 32a.
  • the flow of hydrogen is the same as the flow of air.
  • water droplets contained in hydrogen introduced from the hydrogen inlet pipe 22 provided in the hydrogen-side fastening plate 20 flow along the bottom of the hydrogen inlet pipe 22 toward the fuel cell 11.
  • the water droplets introduced together with hydrogen from the hydrogen inlet pipe 22 flow through the bottom of the hydrogen inlet hole 26 of the hydrogen-side fastening plate 20, wherewith the bottom of the hydrogen inlet pipe 22 is approximately level, towards the unit cells 13 of the fuel cell 11.
  • moisture in a state of steam, together with hydrogen travels from the hydrogen inlet hole 26 of the hydrogen-side fastening plate 20 through the hydrogen lead-in holes 46a and 46aa respectively provided in the insulating plate 18 and the current-collecting plate 16, where the hydrogen inlet ports 46 respectively provided in the air-side separator and the hydrogen-side separator direct the moisture into the hydrogen supply passage 45 formed in the direction of stacking. Then, as shown in FIG.
  • the exhaust hydrogen travels from the hydrogen exhaust passage 47 through the hydrogen lead-out holes 48a and 48aa to be exhausted from the hydrogen outlet hole 28 of the hydrogen- side fastening plate 20 to outside the fuel cell 11.
  • This exhaust hydrogen contains moisture and, therefore, the moisture may flow through the bottom of the hydrogen exhaust passage 47 in a state of water droplets; however, because the bottom of the hydrogen outlet hole 28 of the hydrogen-side fastening plate 20, the bottoms of the hydrogen outlet ports 48 respectively provided in the hydrogen-side separator and the like forming the hydrogen exhaust passage 47, and the bottoms of the hydrogen lead- out holes 48a and 48aa are arranged so as to be approximately level with one another, it is possible for water droplets to drain out of the fuel cell 11 without collecting in the hydrogen exhaust passage 47 and the hydrogen lead-out holes 48a and 48aa.
  • the embodiment heretofore described has the advantageous effect that, by employing a simple structure in which the bottoms of the air inlet hole 25 and the hydrogen inlet hole 26 provided in the respective fastening plates 19 and 20 are positioned lower, gravity-wise, than the bottoms of the air lead-in holes 30a and 30aa and the hydrogen lead-in holes 4 ⁇ a and 46aa respectively provided in the insulating plates 17 and 18 and the current- collecting plates 15 and 16 and the bottoms of the air inlet ports 30 and the hydrogen inlet ports 46 respectively provided in the air-side separator 33 and the hydrogen-side separator 37, it is possible to prevent water condensing in the portions of the inlet piping and the like from flowing into the air supply passage 29 or the hydrogen supply passage 45 inside the fuel cell 11.
  • the embodiment also has the advantageous effect that, by employing a simple structure wherein the bottoms of the air outlet hole 27 and the hydrogen outlet hole 28 provided in the respective fastening plates 19 and 20 are positioned approximately level with the bottoms of the air lead-out holes 32a and 32aa and the hydrogen lead-out holes 48a and 48aa respectively provided in the insulating plates 17 and 18 and the current-collecting plates 15 and 16 and the bottoms of the air outlet port 32 and the hydrogen outlet port 48 respectively provided in the air-side separator 33 and the hydrogen-side separator 37, it is possible for water droplets to drain out of the fuel cell 11 without collecting in the air exhaust passage 31, the air lead-out holes 32a and 32aa, the hydrogen exhaust passage 47, or the hydrogen lead-in holes 48a and 48aa inside the fuel cell 11.
  • the general fuel cell 11 is provided with the air-side fastening plate 19 including the air inlet hole 25 and the air outlet hole 27, the hydrogen-side fastening plate 20 including the hydrogen inlet hole 26 and the hydrogen outlet hole 28, the air lead-in holes 30a and 30aa, the air lead-out holes 32a and 32aa, the hydrogen lead-in holes 46a and 46aa, and the hydrogen lead-out holes 48a and 48aa respectively provided in the insulating plates 17 and 18 and the current-collecting plates 15 and 16, and the air inlet port 30, the air outlet port 32, the hydrogen inlet port 46, and the hydrogen outlet port 48 respectively- provided in the air-side separator 33 and the hydrogen-side separator 37, and has the advantageous effect that by applying a simple structure requiring no additional members for preventing the inflow of condensed water, it is possible to effectively prevent condensed water from flowing into the fuel cell 11. Furthermore, the fuel cell 11 has the advantageous effect that, because there is no need for additional members, it is possible to reduce the increase of pressure loss due to a structure applied
  • the vertical circumferential widths of the air lead-in holes 30a and 30aa provided in the insulating plate 17 and the current-collecting plate 15 are larger than the circumferential widths of the air inlet ports 30 respectively provided in the air-side separator 33 and the hydrogen-side separator 37, whereas the bottoms of the air lead-in holes 30a and 30aa are approximately level with the bottom of the air inlet hole 25 of the air-side fastening plate 19.
  • the bottoms of the air lead-in holes 30a and 30aa provided in the insulating plate 17 and the current-collecting plate 15 are disposed so as to be lower in the direction of gravitational force than the bottoms of the air inlet ports 30 respectively provided in the air-side separator 33 and the hydrogen-side separator 37.
  • condensed water flowing in from the air inlet pipe 21 is made to flow through the bottom of the air inlet hole 25 to the bottoms of the air lead-in holes 30a and 30aa of the insulating plate 17 and the current-collecting plate 15; on the other hand, the bottom of the air inlet port 30 of the air-side separator 33 is disposed above, gravity-wise, the bottom of the air inlet hole 25 through to the bottoms of the air lead-in holes 30a and 30aa of the insulating plate 17 and the current-collecting plate 15.
  • the fuel cell 11 is configured in such a manner that the contact face of the air-side separator 33 provided adjacent to the current-collecting plate 15, with which the contact face is in contact, is exposed to the end face of the air lead-in hole 30aa of the current-collecting plate 15.
  • the fuel cell 11 is configured such that the wall surfaces of reaction gas flow passages are out of alignment between adjacent members.
  • the vertical widths of the air lead-out holes 32a and 32aa provided in the insulating plate 17 and the current- collecting plate 15 are larger than the widths of the air outlet ports 32 respectively provided in the air-side separator 33 and the hydrogen-side separator 37, whereas the bottoms of the air lead-out holes 32a and 32aa are approximately level with the bottom of the air inlet hole 25 of the air-side fastening plate 19.
  • the bottoms of the air lead-out holes 32a and 32aa provided in the insulating plate 17 and the current-collecting plate 15 are disposed so as to be lower, gravity-wise, than the bottoms of the air outlet ports 32 respectively provided in the air-side separator 33 and the hydrogen-side separator 37.
  • the moisture of exhaust air exhausted from the air flow passage 41 to the air exhaust passage 31 may be made to flow through the bottom of the air exhaust passage 31 in the form of water droplets; however, because the bottom of the air outlet hole 27 of the air-side fastening plate 19 and the bottoms of the air lead-out holes 32aa and 32a respectively provided in the current-collecting plate 15 and the insulating plate 17 are disposed so as to be lower, gravity-wise, than the bottoms of the air outlet ports 32 respectively provided in the air-side separator 33 and the hydrogen-side separator 37 to constitute the air exhaust passage 31, it is possible for water droplets to drain out of the fuel cell 11 without collecting in the air exhaust passage 31 and the air lead-out holes 32a and 32aa.
  • the hydrogen-side configuration of the fuel cell 11, including the flow of moisture, is the same as the air-side configuration thereof.
  • the vertical widths of the hydrogen lead-in holes 46a and 46aa provided in the insulating plate 18 and the current-collecting plate 16 are larger on the hydrogen side than the widths of the hydrogen inlet ports 46 respectively provided in the air- side separator 33 and the hydrogen-side separator 37, while the bottoms of the hydrogen lead-in holes 46a and 46aa are approximately level with the bottom of the hydrogen inlet hole 26 of the hydrogen-side fastening plate 20.
  • the bottoms of the hydrogen lead-in holes 46a and 46aa provided in the insulating plate 18 and the current- collecting plate 16 are disposed so as to be lower, gravity wise, than the bottoms of the hydrogen inlet ports 46 respectively provided in the air-side separator 33 and the hydrogen-side separator 37.
  • the vertical widths of the hydrogen lead- out holes 48a and 48aa provided in the insulating plate 18 and the current-collecting plate 16 are larger than the widths of the air outlet ports 32 respectively provided in the air-side separator 33 and the hydrogen-side separator 37, while the bottoms of the hydrogen lead-out holes 48a and 48aa are approximately level with the bottom of the hydrogen outlet hole 28 of the hydrogen-side fastening plate 20.
  • the bottoms of the hydrogen lead- out holes 48a and 48aa provided in the insulating plate 18 and the current-collecting plate 16 are disposed so as to be lower, gravity-wise, than the bottoms of the hydrogen outlet ports 48 respectively provided in the air-side separator 33 and the hydrogen-side separator 37.
  • the embodiment heretofore described also has the advantageous effect that it is possible to prevent the inflow of condensed water by applying a simple configuration, thereby- reducing pressure loss and improving the efficiency of the fuel cell 11.
  • a third embodiment of the present invention will be described with reference to FIGS. 1OA to 12. Components corresponding to those of FIGS. 1 to 9 described above are denoted by the same numerals and will not be explained again. As shown in FIGS.
  • the air lead-in holes 30bb and 30b respectively provided in the current-collecting plate 15 and the insulating plate 17 are made to be the same in shape as the air inlet ports 30 respectively provided in the air-side separator 33 and the hydrogen-side separator 37, wherein the air lead-in holes 30bb and 30b are disposed so that the bottoms thereof are positioned between the bottom of the air inlet port 30 and the bottom of the air inlet hole 25, gravity-wise. Also as shown in FIGS.
  • the air lead-out holes 32bb and 32b respectively provided in the current-collecting plate 15 and the insulating plate 17 are made to be the same in shape as the air outlet ports 32 respectively provided in the air-side separator 33 and the hydrogen-side separator 37, wherein the air lead-out holes 32bb and 32b are arranged so that the bottoms thereof are positioned, gravity-wise, between the bottom of the air outlet port 32 and the bottom of the air outlet hole 27.
  • condensed water flowing in from the air inlet pipe 21 is blocked by a step formed between the bottom of the air inlet hole 25 and the bottom of the air lead-in hole 30b of the insulating plate 17 and by a step formed between the bottom of the air lead-in hole 30bb of the current- collecting plate 15 and the bottom of the air inlet port 30 of the air-side separator 33, such that the condensed water does not enter the air supply passage 29 of the fuel cell 11, thereby making it possible to reduce the likelihood of the air flow passage 41 being clogged by water droplets. It is also possible to enable water droplets discharged from the air flow passage 41 to drain out of the fuel cell 11 without collecting in the air exhaust passage 31 and the air lead-out holes 32b and 32bb.
  • the hydrogen-side configuration of the fuel cell 11 is the same as the air-side configuration thereof.
  • the configuration of the present embodiment isarranged such that the hydrogen lead-in holes 46bb and 46b respectively provided in the current-collecting plate 16 and the insulating plate 18 are made to be the same in shape as the hydrogen inlet ports 46 respectively provided in the air-side separator 33 and the hydrogen-side separator 37; the positions in the direction of gravitational force of the bottoms of the hydrogen lead-in holes 46bb and 46b are set between the positions of the bottoms of the hydrogen inlet port 46 and the hydrogen inlet hole 26; the hydrogen lead-out holes 48bb and 48b respectively provided in the current-collecting plate 16 and the insulating plate 18 are made to be the same in shape as the hydrogen outlet ports 48 respectively provided in the air-side separator 33 and the hydrogen-side separator 37; and the positions, gravity-wise, of the bottoms of the hydrogen lead-out holes 48bb and 48b are set between the positions of the bottoms of the hydrogen outlet port 48 and the
  • condensed water flowing in from the hydrogen inlet pipe 22 is blocked by a step formed between the bottom of the hydrogen inlet hole 26 and the bottom of the hydrogen lead- in hole 46b of the insulating plate 18 and by a step formed between the bottom of the hydrogen lead-in hole 46bb of the current-collecting plate 16 and the bottom of the hydrogen inlet port 46 of the hydrogen-side separator 37, such that the condensed water does not enter the hydrogen supply passage 45 of the fuel cell 11, thereby making it possible to reduce the likelihood of the hydrogen flow passage 43 being clogged with water droplets. It is also possible for water droplets discharged from the hydrogen flow passage 43 to drain out of the fuel cell 11 without collecting in the hydrogen exhaust passage 47 and the hydrogen lead-out holes 48b and 48bb.
  • the present embodiment also has the advantageous effect that it is possible to prevent the inflow of condensed water by employing a simple configuration.
  • the abovementioned holes may not be provided in the same positions since it is possible to prevent the ingress of condensed water and to drain water droplets without allowing them to collect the fuel cell 11 as long as the positions of the bottoms of the respective holes in the insulating plate 17 are set lower, in the direction in which the gravitational force acts, than the positions of the bottoms of the respective holes in the current- collecting plates 15 and 16.
  • a fourth embodiment of the present invention will be described with reference to FIG. 13. Components corresponding to those of FIGS. 1 to 12 described above are denoted by the same numerals and will not be explained again. As shown in FIG.
  • the air inlet hole 25 and the air outlet hole 27 provided in the air-side fastening plate 19 are circular and the air inlet port 30 and the air outlet port 32 of each unit cell 13 and the air lead-in holes 30aa and 30a and the air lead- out holes 32 and 32aa of the current-collecting plate 15 and the insulating plate 17 are equally of horizontally elongated rectangular shape, while the air flow passage 41 for flowing air from the air inlet port 30 to the air outlet port 32 is provided in the air-side separator 33.
  • the circumference of the air inlet hole 25 is wider, perpendicular to the direction of gas flow, than the circumferences of the air inlet port 30 and the air lead-in holes 30aa and 30a, such that the width of the air inlet hole 25 is greater than the width of the air inlet port 30 and the air lead-in holes 30aa and 30a.
  • the air outlet hole 28 is arranged in such a position that the bottom thereof is approximately level, gravity-wise, with the bottoms of the air outlet port 32 and the air lead-out holes 32aa and 32a.
  • the air inlet hole 25 of the air-side fastening plate 19 is not arranged in such a manner that the bottom thereof is positioned lower, in the direction in which the gravitational force acts, than the bottom of each air inlet port 30 of each unit cell 13 or the bottom of each of the air lead-in holes 30aa and 30a of the current-collecting plate 15 and the insulating plate 17, like in the first to third embodiments.
  • the present embodiment also has the advantageous effect that it makes it possible to prevent the inflow of condensed water by employing a simple configuration.
  • the description was based on an example structure in which the air inlet hole 25 and the air outlet hole 27 are provided in the air-side fastening plate 19 and the hydrogen inlet hole 26 and the hydrogen outlet hole 28 are provided in the hydrogen-side fastening plate 20.
  • the present invention is similarly applicable to a fuel cell having no outlet holes, such as a dead-end type fuel cell, and to a fuel cell wherein each inlet hole and each outlet hole are not provided in the same fastening plate but provided in mutually opposite fastening plates.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
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  • Sustainable Energy (AREA)
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Abstract

Dans une pile à combustible (11), le fond d'un orifice d'admission de l'air (25) d'une plaque de fixation côté air (19) est positionné en-dessous, par gravité, du fond d'un orifice d'admission de l'air (30), et le fond de l'orifice de sortie de l'air (27) d'une plaque de fixation côté air (19) est positionné au niveau ou en-desssous, par gravité, du fond d'un orifice de sortie de l'air (32). De plus, le fond d'un orifice d'entrée de l'hydrogène d'une plaque de fixation côté hydrogène (26) est positionné en dessous du fond de l'orifice d'entrée de l'hydrogène (46), et le fond de l'orifice de sortie de l'hydrogène (28) d'une plaque de fixation côté hydrogène (20) est positionné au niveau ou en dessous d'un orifice de sortie de l'hydrogène (48). Par conséquent, l'arrivée de l'eau condensée est empêchée.
PCT/JP2007/070765 2006-10-20 2007-10-18 Pile à combustible WO2008050816A1 (fr)

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JP2006286088A JP2008103241A (ja) 2006-10-20 2006-10-20 燃料電池

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EP2026401A1 (fr) 2007-08-06 2009-02-18 L'AIR LIQUIDE, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Procédé de fabrication d'embase pour système à pile à combustible, embase et système obtenus par un tel procédé
EP2919308A4 (fr) * 2012-11-06 2015-11-25 Panasonic Ip Man Co Ltd Pile à combustible du type à polyélectrolyte
EP2654113A4 (fr) * 2010-12-17 2016-04-20 Nissan Motor Pile à combustible
CN105529487A (zh) * 2014-10-14 2016-04-27 丰田自动车株式会社 燃料电池
US20180145352A1 (en) * 2016-11-22 2018-05-24 Toyota Shatai Kabushiki Kaisha Fuel cell
CN111799495A (zh) * 2020-07-15 2020-10-20 新地能源工程技术有限公司 固体氧化物燃料电池电堆的歧管及包括其的固体氧化物燃料电池
US11108058B2 (en) 2014-04-07 2021-08-31 Audi Ag Bipolar plate and fuel cell
EP4135082A1 (fr) * 2021-06-08 2023-02-15 Bloom Energy Corporation Plénum de carburant et pile à combustible le comprenant

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CN110797550B (zh) * 2019-10-01 2022-04-22 深圳市世椿智能装备股份有限公司 一种氢燃料电池复合板的点胶方法
CN115447405A (zh) * 2022-10-17 2022-12-09 质子汽车科技有限公司 车辆的氢燃料电池堆安装结构

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JP2003178791A (ja) * 2001-12-12 2003-06-27 Nissan Motor Co Ltd 燃料電池システム
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EP2026401A1 (fr) 2007-08-06 2009-02-18 L'AIR LIQUIDE, Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude Procédé de fabrication d'embase pour système à pile à combustible, embase et système obtenus par un tel procédé
EP2654113A4 (fr) * 2010-12-17 2016-04-20 Nissan Motor Pile à combustible
EP2919308A4 (fr) * 2012-11-06 2015-11-25 Panasonic Ip Man Co Ltd Pile à combustible du type à polyélectrolyte
US10164271B2 (en) 2012-11-06 2018-12-25 Panasonic Intellectual Property Management Co., Ltd. Polymer electrolyte fuel cell with a recess is formed downstream of a gas lead-out port
US11108058B2 (en) 2014-04-07 2021-08-31 Audi Ag Bipolar plate and fuel cell
CN105529487A (zh) * 2014-10-14 2016-04-27 丰田自动车株式会社 燃料电池
US9673477B2 (en) 2014-10-14 2017-06-06 Toyota Jidosha Kabushiki Kaisha Fuel cell
DE102015116645B4 (de) 2014-10-14 2024-03-14 Toyota Jidosha Kabushiki Kaisha Brennstoffzelle
DE102017125928B4 (de) 2016-11-22 2022-03-03 Toyota Jidosha Kabushiki Kaisha Brennstoffzelle mit verbessertem Wassermanagement
US10840522B2 (en) 2016-11-22 2020-11-17 Toyota Shatai Kabushiki Kaisha Fuel cell
CN108091899B (zh) * 2016-11-22 2021-03-30 丰田车体株式会社 燃料电池
CN108091899A (zh) * 2016-11-22 2018-05-29 丰田车体株式会社 燃料电池
US20180145352A1 (en) * 2016-11-22 2018-05-24 Toyota Shatai Kabushiki Kaisha Fuel cell
CN111799495A (zh) * 2020-07-15 2020-10-20 新地能源工程技术有限公司 固体氧化物燃料电池电堆的歧管及包括其的固体氧化物燃料电池
CN111799495B (zh) * 2020-07-15 2024-04-30 新地能源工程技术有限公司 固体氧化物燃料电池电堆的歧管及包括其的固体氧化物燃料电池
EP4135082A1 (fr) * 2021-06-08 2023-02-15 Bloom Energy Corporation Plénum de carburant et pile à combustible le comprenant

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