WO2015150524A1 - Plaque bipolaire, pile à combustible et véhicule automobile - Google Patents

Plaque bipolaire, pile à combustible et véhicule automobile Download PDF

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Publication number
WO2015150524A1
WO2015150524A1 PCT/EP2015/057325 EP2015057325W WO2015150524A1 WO 2015150524 A1 WO2015150524 A1 WO 2015150524A1 EP 2015057325 W EP2015057325 W EP 2015057325W WO 2015150524 A1 WO2015150524 A1 WO 2015150524A1
Authority
WO
WIPO (PCT)
Prior art keywords
recesses
plates
bipolar plate
fuel cell
flow
Prior art date
Application number
PCT/EP2015/057325
Other languages
German (de)
English (en)
Inventor
Benno Andreas-Schott
Markus Ritter
Christian Martin ZILLICH
Original Assignee
Volkswagen Ag
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 Volkswagen Ag filed Critical Volkswagen Ag
Publication of WO2015150524A1 publication Critical patent/WO2015150524A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—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
    • H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
    • H01M8/026—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant characterised by grooves, e.g. their pitch or depth
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
    • H01M8/0258—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
    • H01M8/0263—Collectors; Separators, e.g. bipolar separators; Interconnectors characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant having meandering or serpentine paths
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/02—Details
    • H01M8/0202—Collectors; Separators, e.g. bipolar separators; Interconnectors
    • H01M8/0267—Collectors; Separators, e.g. bipolar separators; Interconnectors having heating or cooling means, e.g. heaters or coolant flow channels
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
    • H01M8/2465—Details of groupings of fuel cells
    • H01M8/2483—Details of groupings of fuel cells characterised by internal manifolds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells

Definitions

  • the invention relates to a bipolar plate for a fuel cell, a fuel cell and a motor vehicle.
  • Fuel cells use the chemical transformation of a fuel with oxygen to water to generate electrical energy.
  • fuel cells contain as a core component the so-called membrane-electrode assembly (MEA for membrane electrode assembly), which is a composite of a proton-conducting membrane and in each case an electrode disposed on both sides of the membrane (anode and cathode).
  • MEA membrane-electrode assembly
  • the fuel in particular hydrogen H 2 or a hydrogen-containing gas mixture
  • the fuel in particular hydrogen H 2 or a hydrogen-containing gas mixture
  • an electrochemical oxidation takes place with emission of electrons
  • Via the membrane which separates the reaction spaces gas-tight from each other and electrically isolated, takes place (water-bound or anhydrous) transport of protons H + from the anode compartment in the cathode compartment.
  • the electrons provided at the anode are supplied to the cathode via an electrical line.
  • the cathode is supplied with oxygen or an oxygen-containing gas mixture, so that a reduction of the oxygen takes place with absorption of the electrons
  • these oxygen anions react with the protons transported through the membrane to form water.
  • the cathode reaction represents u. a. due to the lower compared to hydrogen diffusion rate of oxygen is the rate-limiting element of the fuel cell reaction.
  • the fuel cell is formed by a multiplicity of stacked membrane-electrode arrangements whose electrical powers add up.
  • bipolar plates are arranged, which has channels for supplying the process gases to the anode or cathode of the adjacent membrane-electrode assemblies and cooling channels for dissipating heat.
  • Bipolar plates are made of an electrically conductive material to make the electrical connection. They thus have the triple function of Process gas supply to the membrane electrode assemblies, the cooling and the electrical connection.
  • Bipolar plates have different areas in a main flow direction
  • the main channels or fluid ports via which the reactants and / or the coolant are supplied. This is followed by an inflow region, which leads to a distribution structure.
  • the distribution structure distributes the fluids, which are then fed to a flow field where the chemical reactions take place.
  • WO 2008024400 A1 discloses a metallic bipolar plate which, however, has a considerable pressure loss in the distribution structure. Although the flow field is already experiencing a high pressure drop, here the distribution structure accounts for about 80% of the bipolar plate pressure drop.
  • DE 101 63 631 A1 discloses a bipolar plate for a fuel cell with a
  • Distribution structure of several adjacent rows in a row arranged elongated webs Distribution structure of several adjacent rows in a row arranged elongated webs.
  • the invention is based on the object to reduce the pressure loss of a bipolar plate.
  • the bipolar plate according to the invention designed for use in fuel cells, comprises a structure of two plates arranged with one another. In this case, each of the two plates in the
  • the distributor structure which may also be referred to as a collector downstream of the flow field, is preferably arranged directly on or next to the flow field.
  • the pressure loss is significantly reduced by improving the hydraulic diameter of the flow cross sections.
  • the length and width ratio of the formed channel cross sections can now tend to the ideal ratio of 1: 1.
  • the uniform distribution in the flow field is significantly improved, since now the flow field and not the distribution area causes the largest part of the pressure loss.
  • the invention also ensures a support or clamping of the membrane electrode assembly with the bipolar plate in the distribution area.
  • plates are thus used for the construction of the bipolar plate, which have no channel-like, continuous recesses as in the prior art, but partially overlapping, periodic structures with recesses.
  • recess is understood to mean a bulge or embossing of an otherwise flat plate which has a continuous circumferential contour with respect to the flat background of the plate.
  • the recesses allow not only the longitudinal main flow but also a transversely or perpendicularly extending transverse or secondary flow, which the
  • the recesses are preferably rounded cross or rhombic structures.
  • Rounded or rounded cross or rhombic structures are particularly suitable for generating the coordinated longitudinal and transverse flow of the coolant.
  • the pressure loss of the coolant and the reactants in the longitudinal and transverse directions can be influenced by the length, width and the intersection of the recesses or stampings.
  • the discharge of water, critical for a frost start, is favored by the rounded structures.
  • the rounding consists of rounding sharp corners and / or forming straight side regions of the structures concave, that is, inwards into the structure.
  • an oval shape or ellipse is suitable, wherein an oval or round shape represents a maximum rounded structure or contour.
  • such forms can become a recess or structure be combined. This can be realized for example by two orthogonal and penetrating ellipse shapes.
  • the recesses of the two plates are in edge regions and / or in corner regions of the recesses
  • the recesses can be made identical on both plates.
  • the recesses of the two plates can be arranged offset by half a recess, for example, a half width or length. A smaller offset is also possible, which is then unbalanced.
  • the recesses may have a height between half the height and the total height of the structure. This optimizes flow and minimizes pressure loss as the height of the channel is maximized.
  • the wall thicknesses or thicknesses of the plates of the plates or the plates can be disregarded.
  • a recess may have half the height or the full height of the total flow volume. The full height will be in the area
  • the recesses are embossed in the plates.
  • a deep drawing process can also be used.
  • the provision of the two plates to a bipolar plate is preferably carried out by welding the two plates. This is preferably done in the form of continuous welds, whereby a seal of the coolant channels formed by the recesses is obtained.
  • a particularly suitable welding process is the laser welding.
  • the recesses partially overlap along the main flow direction and along a transverse flow direction.
  • the Oberschneidung in two preferably mutually perpendicular directions simultaneously optimizes the longitudinal and transverse flow.
  • the invention further relates to a fuel cell comprising a stack of a plurality of previously described bipolar plates and a plurality of membrane-electrode assemblies, the bipolar plates and the membrane-electrode assemblies
  • the membrane electrode units rest on the recesses.
  • the recesses thus act - as well as their function for coolant channel formation - as
  • the passage of the anode and / or the cathode operating medium flow takes place parallel to the coolant flow within the channels formed by the recesses.
  • the main flow directions or the longitudinal flows are parallel or substantially parallel. This can be done in cocurrent or countercurrent.
  • the fuel cell can be used for mobile or stationary applications. In particular, it serves to supply power to an electric motor for driving a vehicle.
  • another aspect of the invention relates to a vehicle having a fuel cell as described above. The advantages and modifications described above apply.
  • FIG. 1 shows a plan view of a schematized bipolar plate according to the invention
  • Figure 2 is a schematic representation of a detail of the distribution structure »
  • Figure 3 is a schematic representation of a detail of the distribution structure with hidden
  • FIG. 4 shows a sectional view along section A-A according to FIG. 1
  • FIG. 5 shows a sectional view along section B-B according to FIG. 1, FIG.
  • FIG. 6 shows a schematic illustration of a detail of a rounded distribution structure
  • 7 shows a schematic representation of a detail of the rounded distribution structure with hidden edges of the underlying plate
  • FIG. 8 shows a perspective view of the bipolar plate according to the invention
  • FIG. 9 shows a perspective view of a section of the bipolar plate from FIG. 8, FIG.
  • the bipolar plate 10 usually has a rectangular extent, wherein the longitudinal direction in a
  • Main flow direction X runs and the transverse side parallel to a direction Y of
  • Cathode main gas channel 14 and a coolant main gas channel 16 are located. Above the channels 12, 14 and 16, the respective fluids of the bipolar plate 10 are supplied. Further downstream is the distribution area or manifold structure 18, which will be described in more detail below.
  • the flow field 20 of the bipolar plate 10 adjoins the distributor structure 18. Between the channels 12, 14 and 16 and the distributor structure 18, one or more inflow regions 22 are provided, via which the respective fluid passes from the corresponding channel into the distributor structure.
  • the distributor structure 18 has the task of distributing the fluids from the width of the associated channel in the Y direction to the entire width of the flow field 20, in order to enable surface-wide chemical reactions or cooling. For this purpose, a plurality of recesses 24 are arranged in the distributor structure 18.
  • the recesses 24 are formed in a periodic structure 26.
  • the recesses 24 have a diamond-shaped structure, with the diamonds being arranged with their longitudinal axis parallel to the main flow direction X.
  • the recesses 24 are arranged relatively close to each other, so that a plurality of recesses 24 are provided in the distributor structure 18.
  • the distance between two recesses 24 corresponds approximately to 3 to 7 times, preferably 5 times, an outer edge or side of the recess 24.
  • the recesses 24 are also offset such that the distances between the recesses 24 are approximately equal are.
  • the recesses 24 may be arranged in rows, wherein the rows are each offset by the dimension of half a recess 24 to each other.
  • the rows may be formed in the longitudinal flow direction X and / or in the transverse flow direction Y.
  • the periodic structure 26 of FIG. 2 is extended by a further periodic structure 26, which is arranged below the periodic structure 26 shown in FIG.
  • recesses 24a of a first plate corresponding to the recesses 24 of FIG. 2 are shown in full.
  • Recesses 24b of an underlying second plate are shown hatched. As can be seen, the two plates are offset from each other so that the recesses 24a of the first plate and the recesses 24b of the second plate partially overlap. Since the recesses 24a and 24b are formed symmetrically, a symmetrical overlapping structure results.
  • each diamond-shaped recess 24 has four
  • the two recesses 24a and 24b lie one above the other, so that here a relatively high flow cross-section is formed.
  • Figure 4 shows the sectional view of the bipolar plate 10 along the line AA in Figure 1.
  • the first plate 32 and the second plate 34 form a cooling channel or
  • Coolant flow region 36 in the example of the coolant flow 38 in
  • Main flow direction X is shown. As can be seen, the two plates 32 and 34 are arranged to each other such that the recesses 24a and 24b are arranged facing away from each other. In other words, the two plates 32 and 34 are with their
  • Coolant flow region 36 is designated.
  • the structure of the first plate 32 and the associated second plate 34 has a total height H.
  • the height of a recess 24, calculated from an inner side of the plate to an outer side of the plate in the areas of the recess 24 is h, wherein the height of the recess h corresponds to half the height H of the structure.
  • Manifold 18 a high height h for the coolant flow area 36, which leads to a favorable hydraulic cross section and thus low pressure drop. Also, the flow volumes or channels for the reactants have a height that corresponds to half the total height H. These flow areas are formed on the outer sides of the two plates 32 and 34 between the recesses 24, respectively. There is then in a stack of a complete Brennstoffelleelle a membrane-electrode assembly on the recesses 24.
  • FIG. 5 shows a cross section according to the line BB in FIG. 1 of the bipolar plate 10. Analogous to FIG. 4, here too the first plate 32 and the second plate 34 are shown, which with their respective recesses 24a and 24b one between the two plates
  • Coolant in the coolant flow area 36 is also shown. While the flow profile in the longitudinal direction X is shown in FIG. 4, the flow profile in the transverse direction Y or the transverse component of the coolant flow is shown here in FIG.
  • the coolant path 38 thus has a longitudinal component as well as a transverse component in a continuous flow space which is interrupted by the support regions 30.
  • Flow region or coolant channel 36 has due to the large height h and the formation and the arrangement of the recesses 24 has a favorable hydraulic diameter.
  • FIGS. 6 and 7 a periodic structure 26 of the recesses 24 is shown analogously to FIGS. 2 and 3. While in Figures 2 and 3, the recesses 24 have the shape or contour of a rhombus, the recesses 24 are formed in Figure 6 and 7 as a rounded cross pattern. This embodiment can also be used as a rounded cross or
  • Diamond structure are called. As shown in Figure 8, the side surfaces of the recesses 24 are now concave, so curved inward. As a result, the cathode and / or anode course takes a wave-shaped or meandering course, which is the
  • Recess 24b is formed.
  • Figure 9 shows a perspective view of the bipolar plate 10.
  • the top of Figure 1 is shown below.
  • the first one Plate 32 arranged below, while the second plate 34 is arranged at the top.
  • a plurality of recesses 24 are arranged in the distributor structure 18
  • FIG. 9 shows a detail according to section C of FIG. 8.
  • the recesses 24b are formed outwardly in the second plate 34, so that the outer walls of the recesses 24b project as protrusions from the plane of the second plate 34.
  • the recesses 24a of the first plate 32 are formed.
  • the staggered recesses 24a and 24b form the
  • Coolant flow region 36 in which the coolant flows controlled by the shape and arrangement of the recesses 24 in a favorable hydraulic diameter or cross-section in the longitudinal and transverse directions. This causes the pressure loss across the manifold structure 18 to be low.
  • a plurality of the bipolar plates 10 are stacked alternately with a membrane-electrode assembly. That is, each membrane-electrode assembly is sandwiched by two bipolar plates 10. Likewise, each bipolar plate 10 is sandwiched by two membrane-electrode assemblies.
  • Each membrane-electrode assembly may comprise a polymer electrolyte membrane sandwiched between two electrodes, namely an anode and a cathode.
  • the polymer electrolyte membrane may be a per se conductive polymer, for example, the polymer known under the trade name Nafion, or a polymer by
  • Doping with an electrolyte receives its proton conductivity.
  • An example of the latter embodiment is phosphoric acid doped polybenzimidazole (PBI).
  • the electrodes typically comprise a particulate supported catalytically active noble metal. Externally to the electrodes each includes a diffusion layer, which is a porous, gas-permeable and electrically conductive medium.
  • the catalytic layers of the electrodes may either be applied directly to the polymer electrolyte membrane or to the gas diffusion layer.
  • the plate 10 is made of an electrically conductive material, for example a metal or a carbon-based material or a composite material of such. LIST OF REFERENCE NUMBERS

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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)

Abstract

L'invention concerne une plaque bipolaire (10) pour une pile à combustible. Ladite plaque bipolaire comprend une structure composée de deux plaques (32, 34) assemblées l'une à l'autre. Chacune des deux plaques (32, 34), en coupe transversale, présente respectivement une structure périodique comprenant des évidements (24), les creux des évidements (24) des deux plaques (32, 34) étant écartés les uns des autres de manière à former une zone d'écoulement de réfrigérant (36). Selon l'invention, les évidements (24) sont formés exclusivement dans une structure de distribution (18) de la plaque bipolaire (10), ladite structure étant disposée devant un champ de flux (20) dans la direction principale d'écoulement (X), et les évidements (24) des deux plaques (32, 34) se chevauchent en partie, de sorte que cela forme une zone d'écoulement de réfrigérant (36) permettant un écoulement longitudinal et transversal. L'invention concerne en outre une pile à combustible comprenant une plaque bipolaire (10) de ce type.
PCT/EP2015/057325 2014-04-02 2015-04-02 Plaque bipolaire, pile à combustible et véhicule automobile WO2015150524A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014206336.1A DE102014206336A1 (de) 2014-04-02 2014-04-02 Bipolarplatte, Brennstoffzelle und ein Kraftfahrzeug
DE102014206336.1 2014-04-02

Publications (1)

Publication Number Publication Date
WO2015150524A1 true WO2015150524A1 (fr) 2015-10-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/057325 WO2015150524A1 (fr) 2014-04-02 2015-04-02 Plaque bipolaire, pile à combustible et véhicule automobile

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WO (1) WO2015150524A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016121954A1 (de) 2016-11-15 2018-05-17 Audi Ag Bipolarplatte, Brennstoffzellenstapel und ein Kraftfahrzeug

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015223930A1 (de) 2015-12-01 2017-06-01 Volkswagen Aktiengesellschaft Bipolarplatte sowie Brennstoffzelle
DE102016205010A1 (de) 2016-03-24 2017-09-28 Volkswagen Aktiengesellschaft Bipolarplatte, Brennstoffzelle und ein Kraftfahrzeug
DE102018203406A1 (de) * 2018-03-07 2019-09-12 Robert Bosch Gmbh Gasverteilerstruktur für eine Brennstoffzelle
CN110931820A (zh) * 2019-12-10 2020-03-27 张国胜 双极板的整体错位组装方法及包含该双极板的燃料电池电堆和发电***
DE102020205871A1 (de) * 2020-05-11 2021-11-11 Siemens Aktiengesellschaft Brennstoffzellenkühlung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009043211A1 (de) * 2008-10-03 2010-04-22 GM Global Technology Operations, Inc., Detroit Bipolare Platte mit Merkmalen, um einer Austrittswasserrückhaltung entgegenzuwirken
EP2296213A1 (fr) * 2008-06-27 2011-03-16 Honda Motor Co., Ltd. Pile de cellules à combustible
EP2381521A1 (fr) * 2009-01-16 2011-10-26 Honda Motor Co., Ltd. Empilage de piles à combustible
EP2639868A1 (fr) * 2012-03-13 2013-09-18 Siemens Aktiengesellschaft Plaque bipolaire ainsi que cellule électrochimique dotée d'une telle plaque bipolaire

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10163631A1 (de) 2001-12-21 2003-07-10 Forschungszentrum Juelich Gmbh Bipolare Platte für eine Brennstoffzelle
DE10323882A1 (de) * 2003-05-26 2004-12-23 Siemens Ag Brennstoffzelle und Heizeinrichtung einer Brennstoffzelle
DE102005057045B4 (de) 2005-11-30 2015-06-03 Daimler Ag Bipolarplatte und deren Verwendung in einer Brennstoffzelleneinheit
US20080050639A1 (en) 2006-08-23 2008-02-28 Michael Medina Bipolar flow field plate assembly and method of making the same
JP4412395B2 (ja) * 2007-11-27 2010-02-10 トヨタ自動車株式会社 燃料電池および燃料電池用ガスセパレータ
WO2010114556A1 (fr) * 2009-04-03 2010-10-07 Utc Power Corporation Pile a combustible et plaque de champ d'ecoulement a guides d'ecoulement

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2296213A1 (fr) * 2008-06-27 2011-03-16 Honda Motor Co., Ltd. Pile de cellules à combustible
DE102009043211A1 (de) * 2008-10-03 2010-04-22 GM Global Technology Operations, Inc., Detroit Bipolare Platte mit Merkmalen, um einer Austrittswasserrückhaltung entgegenzuwirken
EP2381521A1 (fr) * 2009-01-16 2011-10-26 Honda Motor Co., Ltd. Empilage de piles à combustible
EP2639868A1 (fr) * 2012-03-13 2013-09-18 Siemens Aktiengesellschaft Plaque bipolaire ainsi que cellule électrochimique dotée d'une telle plaque bipolaire

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016121954A1 (de) 2016-11-15 2018-05-17 Audi Ag Bipolarplatte, Brennstoffzellenstapel und ein Kraftfahrzeug

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