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
  • H01M8/0254—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the form corrugated or undulated
• • 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
  • H01M8/0267—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
  • H01M8/0297—Arrangements for joining electrodes, reservoir layers, heat exchange units or bipolar separators to each other
• • 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
  • H01M8/242—Grouping of fuel cells, e.g. stacking of fuel cells with solid or matrix-supported electrolytes comprising framed electrodes or intermediary frame-like gaskets
• • 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
  • H01M8/247—Arrangements for tightening a stack, for accommodation of a stack in a tank or for assembling different tanks
  • H01M8/2475—Enclosures, casings or containers of fuel cell stacks
• • 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
  • H01M8/247—Arrangements for tightening a stack, for accommodation of a stack in a tank or for assembling different tanks
  • H01M8/248—Means for compression of the fuel cell stacks
• • 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
  • H01M8/10—Fuel cells with solid electrolytes
  • H01M2008/1095—Fuel cells with polymeric electrolytes
• • 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 stack.
• a fuel cell which directly converts chemical energy to electric energy by utilizing electrochemical reaction of reaction gases including an anode gas such as hydrogen and a cathode gas such as oxygen, has been well known.
• Japanese Unexamined Patent Application Publication No. 2006-92924 discloses a solid polymer electrolyte fuel cell stack including a plurality of single cells.
• Each of the single cells includes a membrane electrode assembly (hereinafter referred to as "MEA") and separators disposed on both sides of the MEA.
• MEA membrane electrode assembly
• the MEA has an anode electrode and a cathode electrode sandwiching an electrolyte membrane therebetween.
• insulating resin members are formed so that the stacked single cells can be joined to each other and insulation from the outside can be ensured.
• Japanese Unexamined Patent Application Publication No. 2006-92924 discloses a solid polymer electrolyte fuel cell stack including a plurality of single cells.
• Each of the single cells includes a membrane electrode assembly (hereinafter referred to as "MEA") and separators disposed on both sides of the MEA.
• MEA membrane electrode assembly
• the MEA has an anode electrode and a cathode electrode sandwiching an
• the plurality of single cells and the resin members are integrally formed. Therefore, when the electrolyte membranes of the MEAs swell and the fuel cell stack expands in the direction in which the single cells are stacked (hereinafter referred to as "the stacking direction"), the resin members cannot follow displacement of the fuel cell stack, or in other words, displacements between the plurality of MEAs. This may cause resin members to crack. If the resin members crack, water vapor generated in the MEAs may leak out from the inside of the fuel cell stack to the outside, a liquid junction may be generated, and insulation performance of the fuel cell stack may deteriorate.
• the present invention provides a fuel cell stack in which insulation performance is restrained from deteriorating.
• a fuel cell stack in which a plurality of single cells each including a membrane electrode assembly are stacked in a stacking direction.
• the fuel cell stack includes a plurality of insulation members each connected to an outer peripheral portion of a corresponding one of the membrane electrode assemblies.
• the plurality of insulation members are electrically insulating.
• the fuel cell stack further includes a first displacement absorbing member disposed between each insulation member and an adjacent insulation member.
• a fuel cell stack in which a plurality of single cells are stacked in a stacking direction.
• the fuel cell includes a plurality of membrane electrode assemblies each including an electrolyte membrane and outer peripheral members configured and arranged to absorb displacement between the plurality of membrane electrode assemblies.
• Each of the outer peripheral members is connected to an outer peripheral portion of a corresponding one of the plurality of membrane electrode assemblies.
• a fuel cell stack including a plurality of membrane electrode assemblies and displacement absorbing means for absorbing displacements between each of the membrane electrode assembly and an adjacent membrane electrode assembly and for supporting the plurality of membrane electrode assemblies at outer peripheral portions thereof.
• the first displacement absorbing members, the outer peripheral members, or the displacement absorbing means deform so that the insulation members can follow displacement of the fuel cell stack in the stacking direction, whereby the insulation members are prevented from cracking.
• Fig. 1 is a schematic view of a fuel cell stack of a first embodiment
• Fig. 2 is a partial sectional view of adjacent single cells in the stacking direction
• Figs. 3 A and 3B illustrate the relationship between the thickness of a single cell in the stacking direction and the thickness of a protruding portion of an insulation member in the stacking direction;
• Figs. 4A and 4B illustrate the sealing ability of the fuel cell stack against water vapor generated in an MEA
• Figs. 5 A to 5E illustrate states of insulation members when the fuel cell stack expands in the stacking direction
• Fig. 6 is a partial sectional view of single cells of a fuel cell stack of a second embodiment in the stacking direction.
• Fig. 7 is a partial sectional view of single cells of a fuel cell stack of a third embodiment in the stacking direction..
• a fuel cell system directly converts chemical energy of fuel to electric energy.
• an electrolyte membrane is sandwiched between an anode electrode and a cathode electrode.
• the anode electrode is supplied with anode gas including hydrogen
• the cathode electrode is supplied with cathode gas including oxygen.
• the following electrochemical reactions occur on the surfaces of the anode electrode and the cathode electrode in contact with the electrolyte membrane, so that electric energy is obtained from the electrodes.
• Fig. 1 shows a fuel cell stack 100, which is a fuel cell system used for a mobile vehicle such as an automobile.
• the fuel cell stack 100 includes a plurality of single cells 10, a pair of collector plates 20, a pair of insulation plates 30, a pair of end plates 40, and nuts 50 screwed into tension rods (not shown).
• the single cells 10, which generate electromotive force, are unit cells of a solid polymer electrolyte membrane fuel cell type.
• the fuel cell stack 100 includes a stack of the single cells 10. The structure of the single cell 10 is described below in detail with reference to Fig. 2.
• Each of the pair of collector plates 20 is disposed on an outer surface of the stack of the single cells 10.
• the collector plates 20 are made of gas-impermeable electroconductive material such as compact carbon.
• Each of the collector plates 20 has an output terminal 21 on an upper side thereof.
• the fuel cell stack 100 outputs electrons generated in the single cells 10 through the output terminals 21.
• Each of the pair of insulation plates 30 is disposed on an outer surface of a corresponding one of the collector plates 20.
• the insulation plates 30 are made of insulating rubber.
• Each of the pair of end plates 40 is disposed on an outer surface of a corresponding one of the insulation plates 30.
• the end plates 40 are made of metal or resin material having rigidity.
• One of the end plates 40 includes a cooling water inlet 4 IA, a cooling water outlet 4 IB, an anode gas inlet 42A, an anode gas outlet 42B, a cathode gas inlet 43 A, and a cathode gas outlet 43 B.
• the nuts 50 are disposed on outer surfaces of the pair of end plates 40 at positions near the four corners of each of the end plates 40.
• the nuts 50 are screwed into ends of each of the tension rods extending through the fuel cell stack 100.
• the fuel cell stack 100 is fastened in the stacking direction by the tension rods and the nuts 50.
• the surfaces of the tension rods are insulated.
• the fuel cell stack 100 may be fastened in the stacking direction by using tension plates.
• FIG. 2 is a partial sectional view of adjacent single cells 10 in the stacking direction.
• Each of the single cells 10 includes an MEA 60, an anode separator 71 and a cathode separator 72 sandwiching the MEA 60 therebetween, and an insulation member 80 integrally formed with the MEA 60.
• the MEA 60 is a layered stack including an electrolyte membrane 61, an anode electrode 62 disposed on one surface of the electrolyte membrane 61, and a cathode electrode 63 disposed on the other surface of the electrolyte membrane 61.
• the electrolyte membrane 61 is a proton-conductive ion exchange membrane made of fluorocarbon resin.
• the electrolyte membrane 61 is larger than the anode electrode 62 and the cathode electrode 63, so that the electrolyte membrane 61 has an outer edge 61 A which extends past the outer edges of the anode electrode 62 and the cathode electrode 63. Because the electrolyte membrane 61 conducts electricity well in a wet condition, the anode gas and the cathode gas are humidified in the fuel cell stack 100.
• the anode electrode 62 is a stack of layers including an electrode catalyst layer made of an alloy including platinum or the like, a water-repellent layer made of fluorocarbon resin or the like, and a gas diffusion layer made of a carbon cloth or the like, which are stacked on the electrolyte membrane 61 in this order.
• the cathode electrode 63 is a stack of layers including an electrode catalyst layer, a water-repellent layer, and a gas diffusion layer, which are stacked on the electrolyte membrane 61 in this order.
• the anode separator 71 is a corrugated panel of electroconductive material such as metal.
• the anode separator 71 is larger than the MEA 60.
• an anode gas passage 71 A for supplying anode gas to the anode electrode 62 is formed between the anode separator 71 and the anode electrode 62.
• a cooling water channel 7 IB through which cooling water for cooling the fuel cell stack 100 flows, is formed between the anode separator 71 and the cathode separator 72.
• the cathode separator 72 is a corrugated panel made of electroconductive material such as metal.
• the cathode separator 72 is larger than the MEA 60.
• a cathode gas passage 72 A for supplying the cathode gas to the cathode electrode 63 is formed between the cathode separator 72 and the cathode electrode 63.
• the cooling water channel 7 IB which is formed by the anode separator 71 of one of a pair of adjacent single cells 10, and the cooling water channel 72B, which is formed by the cathode separator 72 of the other one of the pair of adjacent single cells 10, face each other.
• the cooling water channels 71B and 72B constitute a cooling water channel 73.
• the insulation member 80 which is made of electrically insulating resin, is a frame- shaped member disposed along the outer periphery of the MEA 60. The insulation member
• the 80 includes a frame portion 81 integrally formed with the outer periphery of the MEA 60, and a protruding portion 82 protruding from the frame portion 81 in the stacking direction.
• the protruding portions 82 of the insulation member 80 jut out from an end of the frame portion 81 both ways in the stacking direction (vertical directions in Fig. 2).
• the protruding portion 82 of the insulation member 80 of one of a pair of adjacent single cells 10 and the protruding portion 82 of the insulation member 80 of the other one of the pair of single cells 10 are bonded to each other via a first displacement absorbing member 90.
• the first displacement absorbing members 90 are bonding members.
• a slot 83 is formed so that the outer edge 61 A of the electrolyte membrane 61 can be inserted therein.
• the 81 is sandwiched between the anode separator 71 and the cathode separator 72 of the single cell 10, and bonded to the anode separator 71 and the cathode separator 72 via second displacement absorbing members 92.
• the second displacement absorbing member 92 are bonding members.
• the first displacement absorbing members 90 with which the space between the insulation members 80 is filled, and the second displacement absorbing members 92, with which the insulation member 80 is bonded to the separators 71 and 72, can be adhesives having a Young's modulus lower than that of the insulation member 80 when the adhesives are cured. It is preferable that the Young's modulus of the first displacement absorbing members 90 and the second displacement absorbing members 92 is equal to or lower than 20 MPa.
• the fuel cell stack 100 includes the insulation members 80 covering the outer peripheries of the single cells 10, insulation between the inside and the outside of the fuel cell stack 100 can be ensured.
• the thickness tl of the protruding portion 82 of the insulation member 80 of the single cell 10 in the stacking direction is smaller than the thickness t2 of the single cell 10 in the stacking direction.
• the thickness t2 of the single cell 10 in the stacking direction is the sum of the thickness of the MEA 60 in the stacking direction, the thickness of the anode separator 71 in the stacking direction, and the thickness of the cathode separator 72 in the stacking direction.
• Figs. 4A and 4B illustrate the sealing ability of a fuel cell stack against water vapor generated in an MEA.
• Fig. 4A shows the fuel cell stack 100 of the present embodiment
• Fig. 4B shows a fuel cell stack 200 of a comparative example.
• insulation members 80 are disposed so as to sandwich an outer edge 61 A of an electrolyte membrane 61 of a single cell 10 therebetween, whereby the outer periphery of an electrolyte membrane 61 is exposed to the outside.
• water vapor generated in an MEA 60 can be easily released to the outside from between the electrolyte membrane 61 and the insulation members 80.
• rubber gaskets 74 are disposed between the insulation members 80 and the separators 71 and 72. Because the rubber gaskets 74 are permeable to water vapor, water vapor generated in the MEA 60 may leak to the outside from between the insulation members 80 and the separators 71 and 72 as shown by the arrow B.
• the outer edge 61 A of the electrolyte membrane 61 of the single cell 10 is inserted into the slot 83 of the frame portion 81 of the insulation member 80, and the frame portion 81 is bonded to the separators 71 and 72 via the second displacement absorption members 92, whereby water vapor generated in the MEA 60 is restrained from passing between the insulation member 80 and the separators 71 and 72.
• the space between the protruding portions 82 of the insulation members 80 of adjacent single cells 10 is filled with the first absorption displacement member 90, so that the inside of the fuel cell stack 100 is separated from the outside by the insulation members 80 and the first displacement absorbing members 90.
• Figs. 5A to 5E illustrate states of an insulation member when the fuel cell stack expands in the stacking direction.
• Fig. 5C shows a fuel cell stack 300, which is a comparative example of the fuel cell stack 100.
• protruding portions 82 of insulation members 80 of adjacent single cells 10 are connected to each other via a first displacement absorbing member 90 having a Young's modulus higher than that of the insulation members 80.
• Fig. 5D shows a fuel cell stack 300, which is a comparative example of the fuel cell stack 100.
• protruding portions 82 of insulation members 80 of single cells 10 are integrally formed with each other.
• the insulation members 80 and the first displacement absorbing members 90 may not be able to follow displacement of the fuel cell stack (displacements between a plurality of MEAs 60) in the stacking direction, which may occur during power generation or on other occasions.
• Causes of displacement include, but are not limited to, swelling of the MEAs 60 and vibration of the fuel cell stack 300 for example in a moving automotive vehicle subjected to unevenness in the road. Therefore, the protruding portion 82 of the insulation member 80, for example, may crack as shown in Fig. 5E.
• the protruding portions 82 of the insulation members 80 of adjacent single cells 10 are bonded to each other via the first displacement absorbing member 90 having a lower Young's modulus than the insulation members 80.
• the first displacement absorbing member 90 deforms so that the insulation member 80 can follow displacement of the fuel cell stack in the stacking direction, whereby the insulation member 80 is restrained from cracking.
• the fuel cell stack 100 of the present embodiment has the following advantages.
• the space between the protruding portions 82 of the insulation members 80 of adjacent single cells 10 is filled with the first displacement absorbing member 90.
• the first displacement absorbing member 90 deforms so that the insulation member 80 can follow the displacement of the fuel cell in the stacking direction, whereby the insulation member 80 is restrained from cracking. Therefore, water vapor generated in the fuel cell stack 100 does not leak to the outside and generation of a liquid junction is suppressed, whereby the insulation performance of the fuel cell stack 100 is restrained from deteriorating.
• the frame portion 81 of the insulation member 80 is integrally formed with the outer periphery of the MEA 60.
• the area of the electrolyte membrane 61 that swells can be decreased. Therefore, with the fuel cell stack 100, the displacement of the fuel cell stack in the stacking direction due to swelling of the electrolyte membrane 61 can be reduced as compared with the fuel cell stack 200, whereby the insulation member 80 is more securely restrained from cracking.
• the space between the protruding portions 82 of the insulation members 80 of adjacent single cells 10 is filled with the first displacement absorbing member 90, so that the inside of the fuel cell stack 100 is separated from the outside.
• water vapor generated in the MEA 60 does not leak out of the fuel cell stack 100.
• the outer edge 61 A of the electrolyte membrane 61 of the single cell 10 is inserted into the slot 83 of the frame portion 81 of the insulation member 80, and the frame portion 81 of the insulation member 80 is bonded to the separators 71 and 72 via the second displacement absorbing member 92.
• water vapor generated in the MEA 60 is restrained from passing between the insulation member 80 and the separators 71 and 72. In this manner, water vapor is restrained from leaking to the outside without using gaskets or the like, whereby the number of components and the size of the fuel cell stack 100 can be reduced.
• Fig. 6 is a partial sectional view of single cells 10 of a fuel cell stack 100 of a second embodiment in the stacking direction.
• the fuel cell stack 100 of the second embodiment which is similar to that of the first embodiment, differs from that of the first embodiment in that the stacked state of the single cells 10 is firmly held in the second embodiment.
• the difference is mainly described below.
• the fuel cell stack 100 includes a stack of the single cells 10 each including an insulation member 80, and the stack of the single cells are sandwiched between end plates 40 in the stacking direction.
• the rigidity of the fuel cell stack 100 in a direction perpendicular to the stacking direction is lower than the rigidity of the fuel cell stack 100 in the stacking direction. Therefore, when a force is applied to the fuel cell stack 100 from the outside in a direction perpendicular to the stacking direction, the single cells 10 may be moved in the direction perpendicular to the stacking direction.
• the fuel cell stack 100 includes a pair of tie rods 84 so that the single cell 10 can be restrained from moving.
• the tie rods 84 extend in the stacking direction along the outer peripheral surfaces of the protruding portions 82 of the insulation members 80 of the stack of the single cells 10.
• the tie rods 84 are fixed to the end plates 40.
• the pair of tie rods 84 are disposed so as to face each other and sandwich the single cells 10 therebetween from outer sides of the insulation members 80.
• the fuel cell stack 100 of the second embodiment includes the pair tie rods 84, which are disposed on the outer sides of the stack of the single cells 10 and extend in the stacking direction.
• the single cells 10 are restrained from moving in the direction perpendicular to the stacking direction.
• the first displacement absorbing member 90 can deform so that the insulation members 80 can follow movement of the single cells 10.
• the insulation members 80 and the first displacement absorbing members 90 are restrained from cracking. Therefore, water vapor generated in the fuel cell stack 100 does not leak to the outside, generation of a liquid junction is suppressed, and the insulation performance of the fuel cell stack 100 is restrained from deteriorating.
• Fig. 7 is a partial sectional view of single cells 10 of a fuel cell stack 100 of a third embodiment in the stacking direction.
• the fuel cell stack 100 of the third embodiment which is similar to that of the first embodiment, differs from that of the first embodiment in the structure of insulation members 80 of the single cells 10. The difference is mainly described below.
• a protruding portion 82 of the insulation member 80 of the single cell 10 protrudes from an end of the frame portion 81 one way in the stacking direction (upward in Fig. 7).
• a space between the protruding portion 82 of the insulation member 80 of one of a pair of adjacent single cells 10 and an end of the frame portion 81 of the insulation member 80 of the other one of the pair of adjacent single cells 10 is filled with a first displacement absorbing member 90.
• the first displacement absorbing member 90 deforms so that the insulation member 80 can follow the displacement of the fuel cell stack in the stacking direction, whereby the advantage similar to that of the first embodiment can be gained.
• the first displacement absorbing member 90 which deforms in accordance with the displacement of the fuel cell stack, is disposed farther from ends of the anode separator 71 and the cathode separator 72 in the stacking direction than in the first embodiment.
• the insulation member 80 and the ends of the separators 71 and 72 are prevented from colliding with or shifting with respect to each other, whereby the insulation member 80 is restrained from cracking.
• the advantages of the above-described embodiments can be obtained by using displacement absorbing means such as an elastic member made from rubber or other like material instead of the bonding member as the first displacement absorbing 90.
• the fuel cell stack 100 is made by simultaneously stacking all the single cells 10.
• some of the single cells 10 may be stacked beforehand to form a cell module, and a plurality of cell modules may be stacked so as to form the fuel cell stack 100.
• the number of man-hours required for assembling the fuel cell stack can be reduced. Accordingly, it is intended that the invention not be limited to the described embodiments, but that it have the full scope defined by the language of the following claims.

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)

Priority Applications (5)

Applications Claiming Priority (2)

Related Child Applications (2)

Publications (1)

Family

ID=42197872

Family Applications (1)

Country Status (6)

Cited By (4)

Families Citing this family (16)

Citations (12)

Family Cites Families (11)

• 2008
  • 2008-11-19 JP JP2008295450A patent/JP5412804B2/ja active Active
• 2009
  • 2009-11-13 EP EP09827241.2A patent/EP2347464B1/en active Active
  • 2009-11-13 US US13/127,842 patent/US9005838B2/en active Active
  • 2009-11-13 WO PCT/IB2009/007457 patent/WO2010058258A1/en active Application Filing
  • 2009-11-13 CA CA2744361A patent/CA2744361C/en active Active
  • 2009-11-13 CN CN201510957010.9A patent/CN105576275B/zh active Active
  • 2009-11-13 CN CN2009801460620A patent/CN102217127A/zh active Pending
• 2015
  • 2015-02-24 US US14/630,258 patent/US9093697B2/en active Active

Patent Citations (12)

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events