US20100068598A1 - Media supply plate for a fuel cell stack - Google Patents

Media supply plate for a fuel cell stack Download PDF

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Publication number
US20100068598A1
US20100068598A1 US12/522,084 US52208408A US2010068598A1 US 20100068598 A1 US20100068598 A1 US 20100068598A1 US 52208408 A US52208408 A US 52208408A US 2010068598 A1 US2010068598 A1 US 2010068598A1
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United States
Prior art keywords
fuel cell
cell stack
media supply
supply plate
cell system
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
US12/522,084
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English (en)
Inventor
Stefan Kaeding
Rainer Grube
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SunFire GmbH
Original Assignee
Enerday GmbH
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 Enerday GmbH filed Critical Enerday GmbH
Assigned to ENERDAY GMBH reassignment ENERDAY GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GRUBE, RAINER, KAEDING, STEFAN
Publication of US20100068598A1 publication Critical patent/US20100068598A1/en
Assigned to WEBASTO AG reassignment WEBASTO AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ENERDAY GMBH
Assigned to STAXERA GMBH reassignment STAXERA GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WEBASTO AG
Assigned to SUNFIRE GMBH reassignment SUNFIRE GMBH MERGER (SEE DOCUMENT FOR DETAILS). Assignors: STAXERA GMBH
Abandoned legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
    • 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
    • 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
    • H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
    • H01M8/2404—Processes or apparatus for grouping fuel cells
    • 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
    • H01M8/24—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
    • 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
    • H01M8/2485—Arrangements for sealing external manifolds; Arrangements for mounting external manifolds around a stack
    • 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
    • H01M8/12—Fuel cells with solid electrolytes operating at high temperature, e.g. with stabilised ZrO2 electrolyte
    • H01M2008/1293—Fuel cells with solid oxide 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
    • H01M8/241—Grouping of fuel cells, e.g. stacking of fuel cells with solid or matrix-supported electrolytes
    • H01M8/2425—High-temperature cells with solid 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
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49108—Electric battery cell making

Definitions

  • the invention relates to a media supply plate for a fuel cell stack comprising at least one anode gas terminal and comprising at least one cathode gas terminal.
  • the invention further relates to a fuel cell system and a method for its production.
  • the fuel cell stack is frequently stacked on a base plate when it is produced to ensure the stability during the production process.
  • the system provided for the operation of the fuel cell stacks also has to be produced so that it is per se stable enough to accommodate the fuel cell stack. This frequently results in the fuel cell stack being positioned on two base plates, its own base plate and a so-called fuel cell adapter plate of the system. This leads to a high weight and high costs.
  • the invention is based on the object to enable a simple integration of the fuel cell stacks into the systems provided for their operation.
  • the media supply plate according to the invention is based on the generic state of the art in that it still comprises at least one anode waste gas terminal and at least one cathode waste gas terminal.
  • a media supply plate comprises all the terminals required for the supply and release of the process gasses, preferably in the form of a defined interface which may, for example, comprise a flange joint comprising set-on pipes and which may readily be reused by the respective operator of the system.
  • the media supply plate may, in particular, advantageously be designed so that the fuel cell stack can be directly stacked onto and joined on the media supply plate during its production so that it is no longer required to provide two base plates. Another advantage is achieved by the interface provided for the supply and discharge of the process gasses being independent of the respective height of the fuel cell stacks.
  • the terminals are connected to gas passages each of which opens towards at least one orifice provided on an upper surface of the media supply plate.
  • all the terminals are connected to at least one orifice in the upper surface of the media supply plate.
  • at least the orifices provided for the anode gas supply may be aligned with gas passages formed inside the fuel cell stack in its stacking direction during the production of the fuel cell stack.
  • the media supply plate comprises at least one groove provided adjacent to at least one orifice.
  • a groove may, for example, be provided adjacent to the orifice provided for the supply of the cathode air, which is cooler as compared to the operating temperature of the fuel cell stack.
  • the groove is provided for increasing the heat resistance between the cathode air supply area and the active area of the fuel cell stack so that as little heat as possible is transferred to the cathode air supply area.
  • the area of the orifice provided for discharging the cathode air at least one groove may be provided in a similar manner so that as little heat as possible is transferred to the cathode air discharge area.
  • the media supply plate comprises an upper plate comprising the orifices and a lower plate at least contributing to the formation of the gas passages.
  • the upper plate may, in this case serve as a base plate for stacking the fuel cell stack, and the lower plate may be an underlying sheet metal part which forms the gas passages due to a corresponding design, preferably in cooperation with the upper plate.
  • the media supply plate it may also be contemplated that it comprises at least one aperture provided for the passage of at least one fuel cell stack clamping element.
  • the fuel cell stack clamping element may, for example, be a steel strip the one end portion of which is attached to the media supply plate, and it may embrace the fuel cell stack and possibly a cap disposed on it so that the other end portion of the steel strip may be preliminarily retained after having been passed through the aperture. Said preliminary restraint may take place as early as during the production of the fuel cell stack, i.e. during the joining process, and then be maintained during the service life of the fuel cell stack. Thus, a temporary setting which is frequently provided in the state of the art and replaced by a final setting after the integration of the fuel cell stack into the system provided for its operation may be omitted.
  • the fuel cell system according to the invention is characterised in that it comprises a media supply plate of the type explained above and a fuel cell stack stacked directly onto the media supply plate.
  • a media supply plate of the type explained above and a fuel cell stack stacked directly onto the media supply plate.
  • glass solder melting on during the joining of the fuel cell stack may be used without that excluding the additional or alternative use of other sealing elements. Since the media supply plate serves as a base plate of the fuel cell stack as well as a system adapter plate in this case the intricate use of two separate base plates is no longer required.
  • the fuel cell stack comprises a plurality of identically designed repetitive units.
  • repetitive units are per se known and may, for example, comprise a bipolar plate and a MEA (Membrane Electrode Assembly) as well as possibly other sealing and/or gas distribution devices.
  • MEA Membrane Electrode Assembly
  • the fuel cell stack comprises at least two gas passages extending in the stacking direction of the fuel cell stack, each of said gas passages being connected to at least one orifice.
  • Said two gas passages may, in particular, be an anode gas and an anode exhaust or waste gas passage.
  • the fuel cell stack is stacked onto the media supply plate so that at least two orifices are disposed adjacent to the fuel cell stack.
  • This solution is particularly convenient if the fuel cell stack is a fuel cell stack having an open cathode.
  • the fuel cell stack is preferably disposed under a first cap, the two orifices disposed adjacent to the fuel cell stack opening into the space under the first cap.
  • Said first cap may, for example, be manufactured from a ceramic material also serving to ensure the electric insulation of the fuel cell stack.
  • the space under the first cap is divided into a first space and a second space by the fuel cell stack, the one orifice among the orifices disposed adjacent to the fuel cell stack opening into the first space while the other orifice among the orifices disposed adjacent to the fuel cell stack opening into the second space.
  • the cathode supply air and the cathode exhaust air side are separated from each other so that the air provided for supplying the cathodes cannot flow past the fuel cell stack but actually has to penetrate it.
  • the fuel cell stack comprises a cathode gas interface opening into the first space and a cathode waste gas interface opening into the second space.
  • the invention is not limited thereto. It is rather also possible to provide further gas passages in the fuel cell stack via which the cathode air is supplied or discharged. Said other gas passages are then preferably also aligned with orifices in the upper surface of the media supply plate.
  • a particularly preferred embodiment of the fuel cell system according to the invention is characterised in that a fuel cell stack clamping device is provided which clamps at least the fuel cell stack and the media supply plate in the stacking direction.
  • the fuel cell stack clamping device provides for the required clamping during the production of the fuel cell stacks as well as during its operation so that a restraint provided exclusively for the production and possibly for the transportation of the fuel cell stack may be dispensed with.
  • the fuel cell stack clamping device preferably comprises a strip-like fuel cell stack clamping element surrounding at least the fuel cell stack.
  • Said strip may, for example, be a steel strip or any other strip capable of withstanding the temperatures occurring during the operation of the fuel cell system. Without being limited thereto flat strips are particularly preferred.
  • the strip-like fuel cell stack clamping element is kept pre-strained with the aid of at least one elastic element are considered particularly advantageous.
  • the elastic element for example, a coil spring will qualify, it being advantageous if the biasing of said element itself may have different intensities irrespective of the particular embodiment of the elastic element.
  • another restraint may be optimum than during its regular operation.
  • the fuel cell stack is disposed under a second cap.
  • the second cap which may, for example, be formed of a metal, may be supplemented by a base plate so that a metal shell is obtained.
  • an encapsulation of the module is possible which may, for example, serve to block the way of reformate possibly leaking from the fuel cell stack out of the system and to, for example, force said leaking reformate into the cathode exhaust air passage.
  • the fuel cell stack is surrounded by an insulating material. If a second cap (or a complete shell) is provided it is preferably provided between a first cap and the insulation. Theoretically it is of course also possible to provide the second cap or the shell outside of the insulation.
  • the method according to the invention for producing a fuel cell system comprises the following steps:
  • the step of heating comprises a supply or discharge of at least one hot gas via at least two terminals.
  • the hot gasses are supplied via the anode as well as via the cathode path for heating the fuel cell stack.
  • air can be guided over the cathode, and from a certain temperature below the ignition temperature of hydrogen a hydrogen/water/nitrogen mixture can be guided over the anode.
  • Said temperature could, for example, be in the range of 400° C. to 500° C.
  • a final restraint of the fuel cell stacks is effected with the aid of the fuel cell stack clamping device when it is still in its hot state due to the joining.
  • the final restraint can be ensured simply by maintaining the restraint effected for joining the fuel cell stacks. If necessary it may, however, also be advantageous to subsequently adjust the biasing force bringing about the final restraint.
  • the invention enables a simple integration of the fuel cell stack into a system since the insulation and the restraint are preferably already present. Therefore an additional transportation restraint may usually also be omitted.
  • the system interfaces may be variably defined in accordance with the requirements of the client, and a (subsequently) provided seal between the fuel cell stack and the system may be omitted whereby a very low safety risk is obtained.
  • the use of a single common base plate will result in a lower weight, lower costs and to a shorter start-up time.
  • a metal housing a second cap
  • it may be ensured that no reformate flows into the system in an undesired manner even in the event of a lack of tightness of an anode. Thermal losses due to a transfer of heat from the fuel cell stack into the media supply plate may be at least reduced by supplying one or more grooves in the media supply plate since such grooves aggravate heat conduction.
  • FIG. 1 is a perspective representation of an embodiment of the media supply plate according to the invention as viewed from below;
  • FIG. 2 is a perspective cross sectional view of an embodiment of the fuel cell system according to the invention produced in accordance with the method according to the invention;
  • FIG. 3 is a perspective representation of the fuel cell system shown in FIG. 2 ;
  • FIG. 4 is a perspective representation of the fuel cell system according to FIG. 3 with the first cap installed and the clamping strip applied;
  • FIG. 5 is a perspective representation of the fuel cell systems according to FIG. 4 comprising an insulation surrounding the first cap;
  • FIG. 6 is a schematic cross sectional view of a fuel cell system according to the invention which, in particular, schematically shows a possible type of restraint.
  • the media supply plate 10 recognisable particularly in FIGS. 1 to 4 comprises an upper plate 44 and a lower plate 46 .
  • the lower plate 46 is formed so that in cooperation with the upper plate 44 gas passages 22 , 24 , 26 , 28 are provided of which the gas passage 22 is connected to an anode gas terminal 14 , the gas passage 22 is connected to a cathode gas terminal 16 , the gas passage 26 is connected to an anode waste gas terminal 18 and the gas passage 28 is connected to a cathode waste gas terminal 20 .
  • the anode gas terminal 14 , the cathode gas terminal 16 , the anode waste gas terminal 18 and the cathode waste gas terminal 20 are respectively designed in a tubular form and attached to a flange plate 74 arranged vertically to the upper plate 44 and the lower plate 46 .
  • the upper plate 44 , the lower plate 46 and the flange plate 74 are, in this case, connected, for example, by means of welding or soldering so that the terminals 14 , 16 , 18 , 20 are connected to the gas passages 22 , 24 , 26 , 28 in a gastight manner.
  • the gas passages 22 , 24 , 26 , 28 respectively open towards an orifice 30 , 32 , 34 , 36 provided on the upper side 38 , i.e. in the upper plate 44 , of the media supply plate 10 .
  • the fuel cell stack 12 comprises a plurality of repetitive units 54 comprising, in a per se known manner, a bipolar plate, a MEA as well as possibly other gas distribution devices and sealing means.
  • the repetitive units 54 comprise apertures forming gas passages 56 , 58 in the stacking direction of the fuel cell stack 12 , the gas passage 56 being connected to the gas passage 22 and therefore to the anode gas terminal 14 via the orifice 30 .
  • the gas passage 58 is connected to the gas passage 26 and therefore to the anode waste gas terminal 18 via the orifice 34 .
  • a hydrogenous anode gas may thus be supplied to and removed from the anode sides of the individual fuel cells via the terminals 14 and 18 .
  • a cover plate 76 is provided which, on the one hand, closes the gas passages 56 and 58 and is, on the other hand, used for a voltage or current tap.
  • a contact rod 78 is connected to the cover plate 76 in an electrically conductive manner.
  • the electrically insulated contact rod 78 may be lead out downwards through an orifice in the media supply plate 10 .
  • Another contact rod 80 is, in an electrically conductive manner, connected to the media supply plate 10 which, in the illustrated case, represents the mass and is therefore also used as a voltage or current tap.
  • the illustrated example is a fuel cell stack 12 comprising an open cathode, i.e. a cathode gas interface 62 and a cathode waste gas interface 64 are provided.
  • the cathode gas interface 62 is disposed adjacent to the orifice 32 connected to the cathode gas terminal 16 via the gas passage 24 .
  • the cathode waste gas interface 64 is disposed adjacent to the orifice 36 connected to the cathode waste gas terminal 20 via the gas passage 28 .
  • a groove 40 or 42 is provided, respectively, so that as little heat as possible is transferred from the fuel cell stack 12 to the cathode gas supply area or to the cathode gas discharge area.
  • the grooves 40 , 42 bring about an increased heat resistance so that the removal of heat is at least rendered more difficult. This is of particular importance in connection with the cathode gas supply since the supplied cathode gas, generally air, usually has a lower temperature than the operating temperature of the fuel cell stacks which may, in particular, be a SOFC fuel cell stack.
  • a first cap 60 is arranged above the fuel cell stack so that the two orifices 24 , 28 disposed adjacent to the fuel cell stack 12 open into the space below the first cap 60 .
  • the space below the first cap 60 is, in this case, divided into a first space and a second space by the fuel cell stack 12 , the one orifice 24 opening into the first space and the other orifice 28 opening into the second space. Therefore the cathode gas terminal 16 and the cathode waste gas terminal 20 are only connected via the fuel cell stack 12 .
  • One end of the fuel cell stack clamping element 50 provided in the form of a clamping strip comprises an orifice (not shown) so that it can be fixed to a protrusion 82 formed by the lower plate 46 .
  • the clamping strip 50 surrounds the fuel cell stack 12 as well as the first cap 60 which is dimensioned and mounted so that it can apply a force to the fuel cell stack 12 from above.
  • the other end of the clamping strip 50 extends through an aperture 48 in the media supply plate 10 and cooperates with a fuel cell stack clamping device 66 (not shown in FIGS. 1 to 5 ).
  • the allocation of the terminals 14 , 16 , 18 , 20 also decides whether the fuel cell stack 12 is driven in the unidirectional flow mode or in the counter-flow mode with respect to the cathode gas and the anode gas flow during the joining process of the fuel cell stack 12 , a counter-flow mode being obtained with the illustrated allocation.
  • cathode air is supplied via the cathode gas terminal 16 , said air being discharged via the cathode waste gas terminal 20 .
  • a hydrogen/water/nitrogen mixture is supplied via the anode gas terminal 14 and discharged via den anode waste gas terminal 18 after having been discharged by the fuel cell stack 12 .
  • a force acting from the top to the bottom is applied to the fuel cell stack 12 via the clamping strip 50 and the first cap 60 .
  • the fuel cell stack 12 is surrounded by insulation material 72 provided outside of the first cap 60 to ensure the best possible thermal insulation.
  • a metal housing (not shown in FIGS. 1 to 5 ) comprising a second cap may be provided to prevent reformate leaking from the fuel cell stack 12 from flowing into other areas of the system in an undesired manner. Instead such reformate possibly leaking in an undesirable manner may be forced into the cathode exhaust air passage.
  • a second cap is disposed between the insulation 72 and the first cap 60 as well as embodiments in which the insulation 72 is surrounded by a second cap are feasible, the second cap respectively being completed by a corresponding bottom to form a complete housing.
  • the height of the fuel cell stack 12 (also) changes slightly during joining or during the subsequent operation due to the relatively high temperature variation experienced, for example, in SOFC systems. Even in such cases the tightness between the first cap 60 and the media supply plate 10 should generally be given. With respect to the representation shown in FIG. 4 the left (recognisable in FIG. 4 ), the rear and the right wall of the first cap 60 surround the media supply plate 10 in an abutting and therefore sealing manner for this purpose so that a slight upwards or downwards movement of the first cap 60 will not result in any untightness.
  • a heat resistant, elastically deformable seal (not shown) may be provided between the front wall and the media supply plate 10 if required.
  • a seal may, for example, be a gas-tight fibre mat having the corresponding heat resistance. Should unforeseen problems relating to the tightness occur in other positions comparable seals may, of course, also be employed in these positions.
  • FIG. 6 shows a schematic cross sectional view of a fuel cell system according to the invention which, in particular, schematically illustrates a possible type of retainment.
  • a fuel cell stack 12 disposed on a media supply plate 10 is surrounded by a first cap 60 .
  • the fuel cell stack 12 and the first cap 60 are embraced by a clamping strip 50 the one end of which catches a fuel cell stack clamping device 66 while the other end is attached to the media supply plate 10 .
  • the fuel cell stack clamping device 66 comprises a pin 84 connected to the clamping strip 50 and pressed down by a spring 68 so that a retainment of the fuel cell stack 12 is obtained which is determined by the spring 68 .
  • a stopper 86 may be turned or screwed into or out of the pin 84 like a screw.
  • the fuel cell stack clamping device 66 may be employed in connection with the fuel cell stack clamping element 50 during the production (joining) of the fuel cell stack 12 as well as during its regular operation. It is obvious that the fuel cell stack clamping device 66 shown in FIG. 6 is depicted in a very schematic manner and in an unfavourable position. In realistic embodiments a fuel cell stack clamping device 66 rotated by 90° may be disposed flatly on the bottom side of the media supply plate 10 and/or accommodated in a corresponding recess. Preferably the overall arrangement is so that the media supply plate 10 has a flat bottom surface.

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  • 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)
US12/522,084 2007-01-16 2008-01-14 Media supply plate for a fuel cell stack Abandoned US20100068598A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102007002286A DE102007002286B4 (de) 2007-01-16 2007-01-16 Brennstoffzellensystem und Verfahren zu dessen Herstellung
DE102007002286.9 2007-01-16
PCT/DE2008/000057 WO2008086781A2 (de) 2007-01-16 2008-01-14 Medienversorgungsplatte für einen brennstoffzellenstapel

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2008/000057 A-371-Of-International WO2008086781A2 (de) 2007-01-16 2008-01-14 Medienversorgungsplatte für einen brennstoffzellenstapel

Related Child Applications (1)

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US13/741,213 Division US9508997B2 (en) 2007-01-16 2013-01-14 Media supply plate for a fuel cell stack

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US20100068598A1 true US20100068598A1 (en) 2010-03-18

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US12/522,084 Abandoned US20100068598A1 (en) 2007-01-16 2008-01-14 Media supply plate for a fuel cell stack
US13/741,213 Active 2028-02-20 US9508997B2 (en) 2007-01-16 2013-01-14 Media supply plate for a fuel cell stack

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US (2) US20100068598A1 (de)
EP (1) EP2111668A2 (de)
JP (1) JP5322950B2 (de)
CN (1) CN101601161B (de)
AU (1) AU2008207241A1 (de)
CA (1) CA2674278A1 (de)
DE (1) DE102007002286B4 (de)
EA (1) EA200970561A1 (de)
WO (1) WO2008086781A2 (de)

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DE102008018630B4 (de) * 2008-04-14 2013-05-29 Staxera Gmbh Brennstoffzellenstapel, Brennstoffzellensystem und Verfahren zur Herstellung eines Brennstoffzellenstapels
AU2010264424A1 (en) * 2009-06-26 2012-01-19 Corning Incorporated Low mass solid oxide fuel device array monolith
JP5962847B2 (ja) * 2013-03-08 2016-08-03 日産自動車株式会社 燃料電池、燃料電池の配流装置、および燃料電池を備えた車両
DE102013020434B4 (de) * 2013-12-06 2024-03-28 Cellcentric Gmbh & Co. Kg Brennstoffzellenanordnung sowie Medienverteilereinheit und Gehäuse für eine Brennstoffzellenanordnung
US9516995B2 (en) 2013-12-17 2016-12-13 Biovision Technologies, Llc Surgical device for performing a sphenopalatine ganglion block procedure
US9694163B2 (en) 2013-12-17 2017-07-04 Biovision Technologies, Llc Surgical device for performing a sphenopalatine ganglion block procedure
US9510743B2 (en) 2013-12-17 2016-12-06 Biovision Technologies, Llc Stabilized surgical device for performing a sphenopalatine ganglion block procedure
US10016580B2 (en) 2013-12-17 2018-07-10 Biovision Technologies, Llc Methods for treating sinus diseases
KR20160120301A (ko) * 2014-02-05 2016-10-17 엘코겐 오와이 전지 시스템용 조립 방법과 배열체
WO2017190088A1 (en) * 2016-04-29 2017-11-02 Fuelcell Energy, Inc. Modular enclosures for fuel cell stacks that allow for individual installation and replacement of a fuel cell stack in the field
DE102016122442A1 (de) 2016-11-22 2018-05-24 Audi Ag Pressvorrichtung zum Pressen eines Brennstoffzellenstapels und Brennstoffzellenvorrichtung mit Pressvorrichtung
WO2020005910A1 (en) 2018-06-28 2020-01-02 Sandler Scientific, Llc Sino-nasal rinse delivery device with agitation, flow-control and integrated medication management system
KR102140468B1 (ko) * 2018-12-26 2020-08-03 한국과학기술연구원 스택 내부의 열분포가 개선된 연료전지
DE102020119021B3 (de) 2020-07-17 2021-07-29 kraftwerk TUBES GmbH Brennstoffzellenstapel, Brennstoffzellenvorrichtung sowie Brennstoffzellen-Fahrzeug
CN219419115U (zh) * 2023-02-14 2023-07-25 埃尔克根公司 固体氧化物电池堆叠的模块构造

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5993987A (en) * 1996-11-19 1999-11-30 Ballard Power Systems Inc. Electrochemical fuel cell stack with compression bands
US6372372B1 (en) * 2000-02-11 2002-04-16 Plug Power Inc. Clamping system for a fuel cell stack
US6541148B1 (en) * 2000-10-31 2003-04-01 Plug Power Inc. Manifold system for a fuel cell stack
US20030235751A1 (en) * 2002-06-24 2003-12-25 Kelly Sean M. Solid-oxide fuel cell system having an integrated air/fuel manifold
US20040121216A1 (en) * 2002-12-24 2004-06-24 Scott Blanchet Fuel cell stack compressive loading system
US20040197630A1 (en) * 2003-04-03 2004-10-07 Wilson Mahlon S. Direct methanol fuel cell stack
US20050170235A1 (en) * 2004-01-31 2005-08-04 Liqing Hu Integral multi-stack system of fuel cell

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5897271A (ja) * 1981-12-02 1983-06-09 Hitachi Ltd 燃料電池
JPH01232669A (ja) * 1988-03-11 1989-09-18 Hitachi Ltd 溶融炭酸塩型燃料電池
JP2944141B2 (ja) * 1990-04-27 1999-08-30 東燃株式会社 高温型燃料電池
DE59403940D1 (de) * 1993-02-15 1997-10-09 Herrmann Klaus Ag Verfahren und vorrichtung zur umwandlung von chemischer energie eines brennstoffs in thermische energie und gleichzeitig direkt in elektrische energie
US5484666A (en) * 1994-09-20 1996-01-16 Ballard Power Systems Inc. Electrochemical fuel cell stack with compression mechanism extending through interior manifold headers
US6653008B1 (en) * 1999-10-08 2003-11-25 Toyota Jidosha Kabushiki Kaisha Fuel cell apparatus
JP2002050391A (ja) * 2000-08-02 2002-02-15 Honda Motor Co Ltd 燃料電池システム
DE10308382B3 (de) * 2003-02-27 2004-11-11 Forschungszentrum Jülich GmbH Verspannung eines Hochtemperatur-Brennstoffzellenstapels
DE10334129B4 (de) * 2003-07-25 2010-04-08 Staxera Gmbh Verfahren und Vorrichtung zur Herstellung eines Brennstoffzellenstapels
AT413009B (de) * 2004-02-19 2005-09-26 Avl List Gmbh Brennstoffzellenstapel aus mittel- oder hochtemperaturbrennstoffzellen
US7704626B2 (en) * 2004-07-29 2010-04-27 Gm Global Technology Operations, Inc. Isolated and insulated stack end unit inlet/outlet manifold headers
WO2006024124A1 (en) * 2004-08-30 2006-03-09 Hydrogenics Corporation Apparatus for removably attaching an electrochemical cell stack to its operating system
DE102004060526A1 (de) * 2004-12-16 2006-06-22 Daimlerchrysler Ag Brennstoffzellenstapel aus einer Anzahl von einzelnen Brennstoffzellen

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5993987A (en) * 1996-11-19 1999-11-30 Ballard Power Systems Inc. Electrochemical fuel cell stack with compression bands
US6372372B1 (en) * 2000-02-11 2002-04-16 Plug Power Inc. Clamping system for a fuel cell stack
US6541148B1 (en) * 2000-10-31 2003-04-01 Plug Power Inc. Manifold system for a fuel cell stack
US20030235751A1 (en) * 2002-06-24 2003-12-25 Kelly Sean M. Solid-oxide fuel cell system having an integrated air/fuel manifold
US20040121216A1 (en) * 2002-12-24 2004-06-24 Scott Blanchet Fuel cell stack compressive loading system
US20040197630A1 (en) * 2003-04-03 2004-10-07 Wilson Mahlon S. Direct methanol fuel cell stack
US20050170235A1 (en) * 2004-01-31 2005-08-04 Liqing Hu Integral multi-stack system of fuel cell

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