+

WO1995028010A1 - Empilement de piles a combustible comprenant un mecanisme de compression compact central - Google Patents

Empilement de piles a combustible comprenant un mecanisme de compression compact central Download PDF

Info

Publication number
WO1995028010A1
WO1995028010A1 PCT/CA1995/000182 CA9500182W WO9528010A1 WO 1995028010 A1 WO1995028010 A1 WO 1995028010A1 CA 9500182 W CA9500182 W CA 9500182W WO 9528010 A1 WO9528010 A1 WO 9528010A1
Authority
WO
WIPO (PCT)
Prior art keywords
compression bars
fuel cell
cell stack
compression
electrochemical fuel
Prior art date
Application number
PCT/CA1995/000182
Other languages
English (en)
Inventor
Clarence Y. Chow
Boguslav M. Wozniczka
Original Assignee
Ballard Power Systems Inc.
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 Ballard Power Systems Inc. filed Critical Ballard Power Systems Inc.
Priority to AU21076/95A priority Critical patent/AU2107695A/en
Publication of WO1995028010A1 publication Critical patent/WO1995028010A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/24—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
    • H01M8/0267—Collectors; Separators, e.g. bipolar separators; Interconnectors having heating or cooling means, e.g. heaters or coolant flow channels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
    • H01M8/2465—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
    • 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
    • H01M2300/00—Electrolytes
    • H01M2300/0017—Non-aqueous electrolytes
    • H01M2300/0065—Solid electrolytes
    • H01M2300/0082—Organic polymers
    • 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 electrochemical fuel cells. More particularly, the present invention relates to an electrochemical fuel cell stack in which the mechanism for securing the stack in its compressed, assembled state includes compact, centrally disposed compression members, rather than peripherally disposed tie rods as in conventional stack designs.
  • Solid polymer electrochemical fuel cells convert fuel and oxidant to electricity and reaction product.
  • Solid polymer electrochemical fuel cells generally employ a membrane electrode assembly (“MEA") consisting of a solid polymer electrolyte or ion exchange membrane disposed between two electrodes formed of porous, electrically conductive sheet material, typically carbon fiber paper.
  • MEA membrane electrode assembly
  • the MEA contains a layer of catalyst, typically in the form of finely comminuted platinum, at each membrane/electrode interface to induce the desired electrochemical reaction.
  • the electrodes are electrically coupled to provide a path for conducting electrons between the electrodes to an external load.
  • the fuel permeates the porous electrode material and reacts at the catalyst layer to form cations, which migrate through the membrane to the cathode.
  • the oxygen- containing gas supply reacts at the catalyst layer to form anions.
  • the anions formed at the cathode react with the cations to form a reaction product.
  • the catalyzed reaction at the anode produces hydrogen cations (protons) from the fuel supply.
  • the ion exchange membrane facilitates the migration of hydrogen ions from the anode to the cathode.
  • the membrane isolates the hydrogen-containing fuel stream from the oxygen-containing oxidant stream.
  • oxygen reacts at the catalyst layer to form anions.
  • the anions formed at the cathode react with the hydrogen ions that have crossed the membrane to form liquid water as the reaction product.
  • the MEA is disposed between two electrically conductive plates, each of which has at least one flow passage engraved or milled therein.
  • These fluid flow field plates are typically formed of graphite.
  • the flow passages direct the fuel and oxidant to the respective electrodes, namely, the anode on the fuel side and the cathode on the oxidant side.
  • fluid flow field plates are provided on each of the anode and cathode sides. The plates act as current collectors, provide support for the electrodes, provide access channels for the fuel and oxidant to the respective anode and cathode surfaces, and provide channels for the removal of water formed during operation of the cell.
  • Two or more fuel cells can be connected together, generally in series but sometimes in parallel, to increase the overall power output of the assembly.
  • one side of a given plate serves as an anode plate for one cell and the other side of the plate can serve as the cathode plate for the adjacent cell.
  • Such a series connected multiple fuel cell arrangement is referred to as a fuel cell stack, and is usually held together in its assembled state by tie rods and end plates.
  • the stack typically includes manifolds and inlet ports for directing the fuel (substantially pure hydrogen, ethanol reformate or natural gas reformate) and the oxidant
  • the stack also usually includes a manifold and inlet port for directing the coolant fluid, typically water, to interior channels within the stack to absorb heat generated by the exothermic reaction of hydrogen and oxygen within the fuel cells.
  • the stack also generally includes exhaust manifolds and outlet ports for expelling the unreacted fuel and oxidant gases, each carrying entrained water, as well as an exhaust manifold and outlet port for the coolant water exiting the stack. It is generally convenient to locate all of the inlet and outlet ports at the same end of the stack .
  • the plates which make up each conventional fuel cell assembly are compressed and maintained in their assembled states by tie rods.
  • the tie rods extend through holes formed in the peripheral edge portion of the plates and have associated nuts or other fastening means assembling the tie rods to the fuel cell assembly and compressing the end plates of the fuel cell assembly toward each other.
  • the reason for employing a peripheral edge location for the tie rods in conventional designs is to avoid the introduction of openings or otherwise interfering with the central, electrochemically active portion of the fuel cell.
  • the peripheral edge location of the tie rods in conventional fuel cell designs has inherent disadvantages.
  • the peripheral location of the tie rods requires that the thickness of the end plates be substantial in order to transmit the compressive force across the entire area of the plate. End plates having insufficient thickness to transmit such compressive force will not adequately compress the center region of the end plates and the various interior humidification and active section plates interposed between the end plates. Inadequate compressive forces can compromise the seals associated with the manifolds and flow fields in the central regions of the interior plates, and also compromise the electrical contact required along the surfaces of the plates to provide the serial electrical connection among the fuel cells which make up the stack.
  • end plates of substantial thickness contribute significantly to the overall weight and volume of the fuel cell stack, both of which are preferable to minimize, particularly in motive fuel cell applications.
  • the peripheral location of the tie rods induces deflection of the end plates over time, thereby distorting the end plates so as to render them convex, the distance between the peripheral edges of the end plates being less than the distance between the centers of the end plates.
  • Such distortion produces a nonuniform and unpredictable distribution of compressive forces across the area of the end plates, thereby further compromising the seals associated with the manifolds and flow fields in the central regions of the interior plates which make up the stack, as well as the electrical contact required between the serially arranged fuel cell plates.
  • a structure for incorporating a fuel cell, which includes centrally disposed compression bars, is described and illustrated as prior art in U.S. Patent No. 4,997,728, specifically Fig. 2.
  • That prior art design also has inherent disadvantages, namely, the two sets of compression pads 14 between the end ("pressing") plate 10 and the upper bars 13 have different thicknesses because of the differing elevations of the upper bars from the end plate.
  • Such variances in thicknesses are disadvantageous in terms of ease of assembling the fuel cell structure and the need to maintain an inventory of at least two distinct thicknesses of compression pads.
  • the crossed configuration of the upper bars 13 in the '728 patent necessarily renders the elevation of one of the upper bars from the end plate greater than the elevation of the other upper bar, thereby increasing the overall length (and volume) of the fuel cell assembly.
  • an electrochemical fuel cell stack comprising: a. a first end plate; b. a second end assembly; c. at least one electrochemical fuel cell interposed between the first end plate and the second end assembly, the at least one fuel cell comprising an anode layer, a cathode layer and an electrolyte interposed between the anode layer and the cathode layer, each of the anode layer and cathode layer having a central, catalytically active region; d. a compression assembly comprising:
  • each of the plurality of compression bars extending across a central portion of the first end plate, the central portion corresponding to the central, catalytically active region of the anode and the cathode; and 2. compressive means for fastening each of the plurality of compression bars to the second end assembly.
  • the compressive fastening means urges the plurality of compression bars against the first end plate so as to correspondingly urge the first end plate toward the second end assembly, thereby applying compressive force to the at least one fuel cell.
  • the compressive fastening means comprises a tie rod having first and second ends.
  • the first end extends through an opening formed in one of the plurality of compression bars and the second end extends through an opening in the second end assembly.
  • a first fastener retains the first end against the compression bar and a second fastener retains the second end against the second end assembly.
  • each of the plurality of compression bars has a cavity formed on the side facing the first end plate.
  • the compression assembly further comprises compressive means mounted within the cavity for urging each of the plurality of compression bars away from the first end plate.
  • the compressive urging means preferably comprises at least one disc-spring washer.
  • the compressive urging means most preferably comprises a plurality of stacked disc-spring washers.
  • the compressive urging means can also comprise a coiled spring.
  • each of the plurality of compression bars has a longitudinal axis and the longitudinal axis of each of the plurality of compression bars is oriented in parallel with the longitudinal axes of the remainder of the plurality of compression bars.
  • the plurality of compression bars consists of a pair of compression bars.
  • the plurality of compression bars is a plurality of first compression bars
  • the second end assembly preferably comprises a second end plate and a plurality of non-intersecting second compression bars.
  • Each of the plurality of second compression bars extends across a central region of the second end plate. The central region corresponds to the central, catalytically active region of the anode layer and the cathode layer.
  • the compressive fastening means preferably comprises a tie rod having first and second ends.
  • the first end extends through an opening formed in one of the plurality of first compression bars and the second end extends through an opening in one of the plurality of second compression bars.
  • a first fastener retains the first end against the first compression bar and a second fastener retains the second end against the second compression bar.
  • FIG. 1 is a perspective view of a preferred embodiment of an electrochemical fuel cell stack with a compact, centrally disposed compression mechanism.
  • FIG. 2 is an front end elevation view of the electrochemical fuel cell stack illustrated in FIG. 1.
  • FIG. 3 is a sectional view of the electrochemical fuel cell stack taken in the direction of arrows A-A in FIG. 2.
  • FIG. 4 is a rear end elevation view of the electrochemical fuel cell stack illustrated in FIGS. 1-3, showing the end opposite that illustrated in FIG. 2.
  • FIG. 5 is a partial top view, partially in section of the electrochemical fuel cell stack illustrated in FIGS. 2-4.
  • FIG. 6 is a bottom view of the compression bar employed in the electrochemical fuel cell stack illustrated in FIGS. 1-5, showing the side of the compression bar facing the adjacent end plate.
  • FIG. 7 is a side sectional view of the compression bar illustrated in FIG. 7.
  • FIG. 8 is a perspective view of another embodiment of an electrochemical fuel cell stack with a compact, centrally disposed compression mechanism at each end of the stack.
  • FIG. 9 is a rear end elevation view of the electrochemical fuel cell stack illustrated in FIG. 8, showing the end corresponding to that illustrated in FIG. 4. Detailed Description Of The Preferred Periodjments
  • an electrochemical fuel cell stack 30 has a humidification section 32 located upstream from the electrochemically active section 34.
  • Stack 30 is a modular plate and frame design, and includes a compression end plate 42 and a fluid end plate 44.
  • Compression end plate 42 has a pneumatic bladder (not shown) mounted on its surface facing active section 34, which compresses the plates which make up fuel cell stack 30, thereby promoting sealing and electrical contact between the plates of the stack.
  • Bus plates 46 and 48 which are located on opposite ends of active section 34, provide the negative and positive contacts, respectively, to draw current generated by the assembly to a load (not shown in FIG. 1) .
  • Tie rods 54 extend between fluid end plate 44 and compression bars 50 to retain and secure stack 30 in its assembled state with fastening nuts 52.
  • fluid end plate 44 has extending therefrom the six inlet and outlet ports for connecting the incoming and outgoing reactant and coolant streams to the stack.
  • the ports are inlet fuel stream port 62, outlet fuel stream port 64, inlet oxidant stream port 66, outlet oxidant stream port 68, inlet coolant stream port 70, and outlet coolant stream port 72.
  • FIG. 2 is a front end elevation view of the electrochemical fuel cell stack illustrated in FIG. 1.
  • FIG. 2 shows fluid end plate 44 and compression bars 50 retaining and securing stack 30 in its assembled state with fastening nuts 52.
  • Inlet fuel stream port 62, outlet fuel stream port 64, inlet oxidant stream port 66, outlet oxidant stream port 68, inlet coolant stream port 70, and outlet coolant stream port 72 extend from fluid end plate 44.
  • Ports 74 and support channel member 76 are described in more detail below in connection with FIGS. 3 and 4.
  • FIG. 3 is a sectional view of the stack 30 taken in the direction of arrows A-A in FIG. 2.
  • active section 34 includes, in addition to bus plates 46 and 48, a plurality of recurring fuel cell units. Each cell consists of a membrane electrode assembly 96 interposed between two reactant flow field plates 94. A coolant flow field plate 98 is inserted at regular intervals to provide a cooling cell or jacket 98 for removing heat generated by the electrochemical reaction occurring in the cells of t e active section 34.
  • the cells of the active section 34 are electrically coupled in series by virtue of the contact between the electrically conductive sheets that form the layers of the cells.
  • humidification section 32 includes a plurality of humidification cells, one of which is designated in FIG. 3 as humidification cell 92.
  • Each humidification cell 92 consists of a reactant fluid flow field plate (not shown in FIG. 3) , a water flow field plate (not shown) , and a water vapor transport membrane (not shown) interposed between the reactant fluid flow field plate and the water flow field plate.
  • water vapor is imparted to the fuel and oxidant streams prior to introducing the reactant streams to active section 34.
  • each compression bar 50 has a plurality of disc-spring washers 80 stacked in a cavity formed in its underside to urge the compression bar 50 away from the remainder of stack 30, thereby compressing the layers to promote sealing of the stack.
  • Compression end plate 42 has a pneumatic piston 84 positioned within it to apply uniform pressure to the assembly, thereby promoting sealing.
  • Support channel member 76 extends the length of humidification section 32 and active section 34 in order to preserve the alignment and prevent the sagging of the plates which make up stack 30.
  • FIG. 4 is a rear end elevation view of stack 30 illustrated in FIG. 1, showing the end opposite that illustrated in FIG. 2.
  • Compression end plate 42 is retained and secured to the remainder of stack 30 by bolt heads 82 located at the end of tie rods 54 opposite fastening nuts 52 (not shown in FIG. 4).
  • Ports 74 also shown in FIG. 2, allow the introduction of pressurized fluid to the bladder between pneumatic piston 84 and compression end plate 42 (see FIG. 3) , thereby promoting sealing and electrical contact between the plates which make up stack 30.
  • FIG. 5 is a partial top view, partially in section, of stack 30 illustrated in FIGS. 1-4. A portion of the humidification section, which includes humidification cell 92, is illustrated in FIG. 5.
  • FIG. 5 also shows compression bars 50 secured to stack 30 by nuts 52 at the end of tie rods 54.
  • FIG. 6 is a bottom view of the compression bar employed in the electrochemical fuel cell stack illustrated in FIGS. 1-5. In particular, FIG. 6 shows the side of the compression bar 50 which faces the adjacent end plate (not shown in FIG. 6 but shown, for example, as end plate 44 in FIGS. 2, 3 and 5) . As shown in FIG.
  • compression bar 50 preferably includes a pair of oppositely disposed recessed portions 352a and 352b, into which a first pair of holes 354a and 354b is formed to accommodate the insertion of tie rods, such as the one shown as tie rod 54 in FIG. 3, through the holes 354a and 354b.
  • a second pair of holes 356a and 356b is formed in the recessed portions 352a and 352b of compression bar 50.
  • Holes 356a and 356b accommodate the insertion of fasteners (not shown in FIG. 6) to attach compression bar 50 to the adjacent end plate.
  • compression bar 50 also has a pair of cylindrical cavities or bores 362a and 362b formed therein.
  • Each of the cavities 362a and 362b can accommodate a plurality of disc-spring washers (not shown in FIG. 6 but shown in FIG. 3 as disc-spring washers 80) .
  • the disc-spring washers urge the compression bar 50 away from the adjacent end plate, thereby compressing the plates to promote sealing and electrical contact.
  • a recess 358 is also formed in compression bar 50 to reduce its weight.
  • FIG. 7 is a side sectional view of the compression bar 50 illustrated in FIG. 6, showing recesses 352a and 352b, first pair of holes 354a and 354b, second pair of holes 356a and 356b, cavities 362a and 362b, and weight-reducing recess 358.
  • FIG. 8 shows another embodiment of the fuel cell stack in which a compact, centrally disposed compression mechanism is configured at each end of the stack 430.
  • the humidification section 432 and active section 434 are substantially identical to humidification section 32 and active section 34 of stack 30 shown in FIGS. 1-3 and 5.
  • Stack 430 includes a compression end plate 442 and a fluid end plate 444.
  • Compression end plate 442 is significantly thinner than compression end plate 42 of stack 30 shown in FIGS. 1-3 and 5, because plate 442 does not include a pneumatic bladder on the surface of plate 442 facing the active section.
  • Bus plates 446 and 448 located on opposite ends of active section 434, are substantially identical to bus plates 446 and 448 in FIG. 1, and provide the negative and positive contacts, respectively, to draw current generated by the assembly to a load
  • tie rods 454 extend between corresponding ones of compression bars 450 and compression bars 480 to retain and secure stack 430 in its assembled state with fastening nuts 452.
  • Each of the compression bars 480 are substantially identical to each of the compression bars 450, which are in turn substantially identical to each of the compression bars 50 shown in FIGS. 1-3 and 5.
  • each compression bar 458 has a plurality of disc ⁇ spring washers (not shown) stacked in a cavity formed in its underside to urge each compression bar 480 away from plate 442, thereby compressing the layers to promote sealing of stack 430. As shown in FIG.
  • fluid end plate 444 has extending therefrom the six inlet and outlet ports for connecting the incoming and outgoing reactant and coolant streams to stack 430.
  • the ports are inlet fuel stream port 462, outlet fuel stream port 464, inlet oxidant stream port 466, outlet oxidant stream port 468, inlet coolant stream port 470, and outlet coolant stream port 472.
  • FIG. 9 is a rear end elevation view of stack 430 illustrated in FIG. 8, showing the end corresponding to the end of stack 30 illustrated in FIG. 4.
  • Compression bars 480 are retained and secured to plate 442 by bolt heads 482 located at the end of tie rods 454 opposite fastening nuts 452 (not shown in FIG. 9) .
  • the urging together of compression bars 450 and 480 by the tie rods 454, bolt heads 482 and fastening nuts 452 promotes sealing and electrical contact between the plates which make up stack 430.
  • Support channel member 476 extends the length of humidification section 432 and active section 434 in order to preserve the alignment and prevent the sagging of the plates which make up stack 430.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Fuel Cell (AREA)

Abstract

Empilement (30) de piles à combustible comprenant un ensemble de compression comportant plusieurs barres de compression (50) non sécantes. Chaque barre de compression (50) s'étend au-dessus d'une partie centrale de la première plaque (44) terminale adjacente. La partie centrale correspond à la zone centrale catalytiquement active de la couche d'anode et de la couche de cathode des piles à combustible qui forment l'empilement. L'ensemble de compression comprend également un dispositif compresseur qui fixe chacune des barres de compression à un deuxième ensemble (42) terminal situé à l'extrémité opposée de l'empilement. Le dispositif de fixation compresseur pousse les barres de compression contre la première plaque d'extrémité afin de pousser la première plaque terminale vers le deuxième ensemble terminal, ceci ayant pour effet d'appliquer une force de compression sur les piles à combustible qui améliore l'étanchéité et le contact électrique entre les couches formant l'empilement de piles à combustible.
PCT/CA1995/000182 1994-04-06 1995-04-06 Empilement de piles a combustible comprenant un mecanisme de compression compact central WO1995028010A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU21076/95A AU2107695A (en) 1994-04-06 1995-04-06 Electrochemical fuel cell stack with compact, centrally disposed compression mechanism

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US22363294A 1994-04-06 1994-04-06
US223,632 1994-04-06

Publications (1)

Publication Number Publication Date
WO1995028010A1 true WO1995028010A1 (fr) 1995-10-19

Family

ID=22837359

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA1995/000182 WO1995028010A1 (fr) 1994-04-06 1995-04-06 Empilement de piles a combustible comprenant un mecanisme de compression compact central

Country Status (2)

Country Link
AU (1) AU2107695A (fr)
WO (1) WO1995028010A1 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999027602A1 (fr) * 1997-11-25 1999-06-03 Ballard Power Systems Inc. Ensemble de compression pour un empilement de cellules electrochimiques
EP0981174A2 (fr) * 1998-08-19 2000-02-23 Matsushita Electric Industrial Co., Ltd. Cellule à combustible ayant un électrolyte polymère
US6159629A (en) * 1998-12-17 2000-12-12 Ballard Power Systems Inc. Volume effecient layered manifold assembly for electrochemical fuel cell stacks
WO2001056104A3 (fr) * 2000-01-27 2001-12-20 Siemens Ag Element intermediaire pour empilement de piles a combustible et empilement de piles a combustible correspondant
WO2005008825A2 (fr) * 2003-07-11 2005-01-27 Stefan Nettesheim Dispositif de serrage destine a une pile d'une pluralite de cellules electrochimiques et procede de montage d'un tel dispositif
WO2005045982A2 (fr) * 2003-10-31 2005-05-19 3M Innovative Properties Company Ensemble de plaques d'extremite de pile a combustible
US7163761B2 (en) 2002-11-14 2007-01-16 3M Innovative Properties Company Fuel cell stack
US7297428B2 (en) 2003-10-31 2007-11-20 3M Innovative Properties Company Registration arrangement for fuel cell assemblies
US7776488B2 (en) 2003-02-23 2010-08-17 Tribecraft Ag End plate for a stack of fuel cells
WO2011128705A1 (fr) * 2010-04-16 2011-10-20 Itm Power (Research) Limited Bloc de piles électrochimiques
JP2014175169A (ja) * 2013-03-08 2014-09-22 Honda Motor Co Ltd 燃料電池
WO2019012134A1 (fr) * 2017-07-14 2019-01-17 Elringklinger Ag Dispositif formant pile à combustible

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3573104A (en) * 1968-05-09 1971-03-30 Gen Electric Fuel cell unit with novel fluid confining and directing features
US4310605A (en) * 1980-09-22 1982-01-12 Engelhard Minerals & Chemicals Corp. Fuel cell system
EP0082516A2 (fr) * 1981-12-21 1983-06-29 Energy Research Corporation Dispositif et méthode de compression de piles à combustible
JPS6093765A (ja) * 1983-10-28 1985-05-25 Toshiba Corp 燃料電池
JPS60225370A (ja) * 1984-04-20 1985-11-09 Sanyo Electric Co Ltd 燃料電池スタツクの締付装置
US4615107A (en) * 1984-11-16 1986-10-07 Sanyo Electric Co., Ltd. Method and device for assembling a fuel cell stack
JPS61248368A (ja) * 1985-04-25 1986-11-05 Mitsubishi Electric Corp 積層形燃料電池の締付装置
US4642274A (en) * 1984-11-12 1987-02-10 Sanyo Electric Co., Ltd. Fuel cell system
US4692391A (en) * 1984-01-10 1987-09-08 Fuji Electric Company, Ltd. Cell stack assembly structure for fuel cell
JPS62264570A (ja) * 1986-05-13 1987-11-17 Toshiba Corp 燃料電池
JPS62271364A (ja) * 1986-05-19 1987-11-25 Yamaha Motor Co Ltd 燃料電池
JPS6343270A (ja) * 1986-08-09 1988-02-24 Sanyo Electric Co Ltd 燃料電池スタツクの締付装置
EP0575178A1 (fr) * 1992-06-18 1993-12-22 Honda Giken Kogyo Kabushiki Kaisha Empilement de piles à combustible et méthode de serrage
EP0620609A1 (fr) * 1993-03-26 1994-10-19 Daimler-Benz Aktiengesellschaft Batterie électromachimique à structure multicellulaire
US5382478A (en) * 1992-11-03 1995-01-17 Ballard Power Systems Inc. Electrochemical fuel cell stack with humidification section located upstream from the electrochemically active section

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3573104A (en) * 1968-05-09 1971-03-30 Gen Electric Fuel cell unit with novel fluid confining and directing features
US4310605A (en) * 1980-09-22 1982-01-12 Engelhard Minerals & Chemicals Corp. Fuel cell system
EP0082516A2 (fr) * 1981-12-21 1983-06-29 Energy Research Corporation Dispositif et méthode de compression de piles à combustible
JPS6093765A (ja) * 1983-10-28 1985-05-25 Toshiba Corp 燃料電池
US4692391A (en) * 1984-01-10 1987-09-08 Fuji Electric Company, Ltd. Cell stack assembly structure for fuel cell
JPS60225370A (ja) * 1984-04-20 1985-11-09 Sanyo Electric Co Ltd 燃料電池スタツクの締付装置
US4642274A (en) * 1984-11-12 1987-02-10 Sanyo Electric Co., Ltd. Fuel cell system
US4615107A (en) * 1984-11-16 1986-10-07 Sanyo Electric Co., Ltd. Method and device for assembling a fuel cell stack
JPS61248368A (ja) * 1985-04-25 1986-11-05 Mitsubishi Electric Corp 積層形燃料電池の締付装置
JPS62264570A (ja) * 1986-05-13 1987-11-17 Toshiba Corp 燃料電池
JPS62271364A (ja) * 1986-05-19 1987-11-25 Yamaha Motor Co Ltd 燃料電池
JPS6343270A (ja) * 1986-08-09 1988-02-24 Sanyo Electric Co Ltd 燃料電池スタツクの締付装置
EP0575178A1 (fr) * 1992-06-18 1993-12-22 Honda Giken Kogyo Kabushiki Kaisha Empilement de piles à combustible et méthode de serrage
US5382478A (en) * 1992-11-03 1995-01-17 Ballard Power Systems Inc. Electrochemical fuel cell stack with humidification section located upstream from the electrochemically active section
EP0620609A1 (fr) * 1993-03-26 1994-10-19 Daimler-Benz Aktiengesellschaft Batterie électromachimique à structure multicellulaire

Non-Patent Citations (6)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 010, no. 079 (E - 391) 28 March 1986 (1986-03-28) *
PATENT ABSTRACTS OF JAPAN vol. 011, no. 095 (E - 492) 25 March 1987 (1987-03-25) *
PATENT ABSTRACTS OF JAPAN vol. 012, no. 150 (E - 606) 10 May 1988 (1988-05-10) *
PATENT ABSTRACTS OF JAPAN vol. 012, no. 158 (E - 608) 13 May 1988 (1988-05-13) *
PATENT ABSTRACTS OF JAPAN vol. 12, no. 256 (E - 635)<3103> 19 July 1988 (1988-07-19) *
PATENT ABSTRACTS OF JAPAN vol. 9, no. 244 (E - 346)<1967> 30 September 1985 (1985-09-30) *

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6057053A (en) * 1997-11-25 2000-05-02 Ballard Power Systems Inc. Compression assembly for an electrochemical fuel cell stack
WO1999027602A1 (fr) * 1997-11-25 1999-06-03 Ballard Power Systems Inc. Ensemble de compression pour un empilement de cellules electrochimiques
EP0981174A2 (fr) * 1998-08-19 2000-02-23 Matsushita Electric Industrial Co., Ltd. Cellule à combustible ayant un électrolyte polymère
EP0981174A3 (fr) * 1998-08-19 2000-07-12 Matsushita Electric Industrial Co., Ltd. Cellule à combustible ayant un électrolyte polymère
US6210823B1 (en) 1998-08-19 2001-04-03 Matsushita Electric Industrial Co. Ltd. Polymer electrolyte fuel cell
US6159629A (en) * 1998-12-17 2000-12-12 Ballard Power Systems Inc. Volume effecient layered manifold assembly for electrochemical fuel cell stacks
WO2001056104A3 (fr) * 2000-01-27 2001-12-20 Siemens Ag Element intermediaire pour empilement de piles a combustible et empilement de piles a combustible correspondant
US7163761B2 (en) 2002-11-14 2007-01-16 3M Innovative Properties Company Fuel cell stack
US7776488B2 (en) 2003-02-23 2010-08-17 Tribecraft Ag End plate for a stack of fuel cells
WO2005008825A2 (fr) * 2003-07-11 2005-01-27 Stefan Nettesheim Dispositif de serrage destine a une pile d'une pluralite de cellules electrochimiques et procede de montage d'un tel dispositif
WO2005008825A3 (fr) * 2003-07-11 2006-01-05 Stefan Nettesheim Dispositif de serrage destine a une pile d'une pluralite de cellules electrochimiques et procede de montage d'un tel dispositif
WO2005045982A3 (fr) * 2003-10-31 2006-07-27 3M Innovative Properties Co Ensemble de plaques d'extremite de pile a combustible
US7297428B2 (en) 2003-10-31 2007-11-20 3M Innovative Properties Company Registration arrangement for fuel cell assemblies
WO2005045982A2 (fr) * 2003-10-31 2005-05-19 3M Innovative Properties Company Ensemble de plaques d'extremite de pile a combustible
WO2011128705A1 (fr) * 2010-04-16 2011-10-20 Itm Power (Research) Limited Bloc de piles électrochimiques
EA027473B1 (ru) * 2010-04-16 2017-07-31 Айтиэм Пауэр (Рисерч) Лимитед Блок электрохимических ячеек
US10026987B2 (en) 2010-04-16 2018-07-17 Itm Power (Research) Limited Electrochemical cell stack
US10516183B2 (en) 2010-04-16 2019-12-24 Itm Power (Research) Limited Electrochemical cell stack
JP2014175169A (ja) * 2013-03-08 2014-09-22 Honda Motor Co Ltd 燃料電池
WO2019012134A1 (fr) * 2017-07-14 2019-01-17 Elringklinger Ag Dispositif formant pile à combustible
CN110915046A (zh) * 2017-07-14 2020-03-24 爱尔铃克铃尔股份公司 燃料电池装置
US11469436B2 (en) 2017-07-14 2022-10-11 Elringklinger Ag Fuel cell device

Also Published As

Publication number Publication date
AU2107695A (en) 1995-10-30

Similar Documents

Publication Publication Date Title
US5484666A (en) Electrochemical fuel cell stack with compression mechanism extending through interior manifold headers
US5382478A (en) Electrochemical fuel cell stack with humidification section located upstream from the electrochemically active section
EP1070361B1 (fr) Ensemble pile a combustible du type a membrane d&#39;echange de protons dote de sous-empilages de pile a combustible paralleles multiples utilisant des ensembles de plaques d&#39;ecoulement de fluide partages et des ensembles d&#39;electrodes a membrane partages
US5252410A (en) Lightweight fuel cell membrane electrode assembly with integral reactant flow passages
KR100482419B1 (ko) 고분자 전해질형 연료전지
EP0721674B1 (fr) Cellule electrochimique a oxydant selectif integre
US5514487A (en) Edge manifold assembly for an electrochemical fuel cell stack
AU773563B2 (en) Fuel cell and bipolar plate for use with same
EP1107339B1 (fr) Des canaux d&#39;écoulement dans des plaques de collecteur de courant pour piles à combustible
US5527363A (en) Method of fabricating an embossed fluid flow field plate
JP2000231929A (ja) 燃料電池
US7851105B2 (en) Electrochemical fuel cell stack having staggered fuel and oxidant plenums
WO1994011912A1 (fr) Plaques de champ d&#39;ecoulement d&#39;eau de piles a combustible presentant des voies d&#39;ecoulement d&#39;eau discontinues
JP4585737B2 (ja) 燃料電池
EP2235778B1 (fr) Ensemble pile à combustible à éléments modulaires
JP3913573B2 (ja) 燃料電池
WO1996020509A1 (fr) Ensemble collecteur externe integre destine a un empilement de cellules electrochimiques
WO1995028010A1 (fr) Empilement de piles a combustible comprenant un mecanisme de compression compact central
JP4174022B2 (ja) 燃料電池スタック
US20060051645A1 (en) Fuel cell stack with high output current and low output voltage
JP3945136B2 (ja) ガス流路を有する固体高分子電解質型燃料電池
CA2146332C (fr) Electrode a membrane legere a passages de reactif pour cellule a combustible
JP2004014299A (ja) 燃料電池
EP1146584A2 (fr) Ensemble électrodes-membrane pour cellule électrochimique de faible poids, avec passages pour flux de reactifs intégrés
JPS61193369A (ja) 燃料電池

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AU CA JP

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: CA

点击 这是indexloc提供的php浏览器服务，不要输入任何密码和下载