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WO2019175013A1 - Structure de distribution pour une plaque bipolaire d'une pile à combustible - Google Patents

Structure de distribution pour une plaque bipolaire d'une pile à combustible Download PDF

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Publication number
WO2019175013A1
WO2019175013A1 PCT/EP2019/055695 EP2019055695W WO2019175013A1 WO 2019175013 A1 WO2019175013 A1 WO 2019175013A1 EP 2019055695 W EP2019055695 W EP 2019055695W WO 2019175013 A1 WO2019175013 A1 WO 2019175013A1
Authority
WO
WIPO (PCT)
Prior art keywords
layers
distribution structure
layer
dimensional
distribution
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.)
Ceased
Application number
PCT/EP2019/055695
Other languages
German (de)
English (en)
Inventor
Franz Wetzl
Helerson Kemmer
Philipp Scheiner
Elmar Kroner
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of WO2019175013A1 publication Critical patent/WO2019175013A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H01M8/023—Porous and characterised by the material
    • 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
    • H01M8/023—Porous and characterised by the material
    • H01M8/0232—Metals or alloys
    • 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
    • H01M8/023—Porous and characterised by the material
    • H01M8/0234—Carbonaceous material
    • 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
    • H01M8/023—Porous and characterised by the material
    • H01M8/0236—Glass; Ceramics; Cermets
    • 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
    • H01M8/023—Porous and characterised by the material
    • H01M8/0241—Composites
    • H01M8/0245—Composites in the form of layered or coated products
    • 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
    • H01M8/1004—Fuel cells with solid electrolytes characterised by membrane-electrode assemblies [MEA]
    • 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 is based on a distribution structure for a bipolar plate according to the species of the independent device claim and a
  • Fuel cells are electrochemical energy converters in which hydrogen (H2) and oxygen (0 2 ) are converted into water, electrical energy and heat.
  • a stack of this construction forms a fuel cell stack.
  • the reaction gases hydrogen and oxygen (in or from the air) and the cooling liquid are passed through a distribution structure in the cell.
  • This distribution structure is realized either as a channel or as an electrically conductive porous layer.
  • the functions of the anode and cathode distribution structure are to uniformly distribute the reaction gas over the active area, to conduct electrons into the next cell, to transport water produced out of the cell during the reaction, and to transfer the heat from the catalyst layer to the coolant derive. For optimal flow guidance in the reaction layer or for the removal of the water produced during the reaction complex and production-consuming structures are known.
  • open-cell foams are a suitable alternative to channel-like structures and, in particular, have no possible accumulation points for product water, the foams are very expensive to produce.
  • the pore structure of the foams is arbitrary, so that no directional structure can be given, which allows a flow guide. Therefore, compared to channel-like structures, the foams have high pressure losses, which in turn leads to increased demands on the air compressor, which conveys the air into the cells.
  • the invention is a distribution structure for a bipolar plate with the features of the independent device claim and a bipolar plate for a fuel cell with the features of the independent device claim. Further features and details of the invention will become apparent from the respective dependent claims, the description and the drawings. In this case, features and details that are described in connection with the distribution structure according to the invention apply, of course, also in connection with the bipolar plate according to the invention and in each case vice versa, so that with respect to the disclosure of the individual aspects of the invention always reciprocal reference is or can be.
  • the distribution structure according to the invention according to the main claim is used in addition to an improvement of the gas distribution and flow guidance in fuel cells in particular an improved thermal and electrical conductivity.
  • the advantage of the present distribution structure is to be seen in particular that over known distribution structures a simpler and more flexible adaptation to desired properties with respect to the Gasver distribution, flow control and the thermal and electrical conductivity can be achieved.
  • Distribution structure a particularly simple and inexpensive to produce
  • the distribution structure is preferably a bipolar plate distribution structure of a fuel cell or electrolysis cell, in particular one Bipolar plate distribution structure of a PEM fuel cell or PEM electrolysis cell (Note: PEM - Proton Exchange Membrane).
  • the distribution structure is formed in multiple layers and comprises at least a first and a second layer.
  • the second layer is objectively arranged directly on the first layer and electrically conductively connected to it.
  • the distribution structure is formed in one piece and both layers of the distribution structure are formed from a metal material having three-dimensional textile.
  • This three-dimensional textile has both a flat extension in width and length and a height.
  • the height of the textile comprises at least a multiple of the thickness (or the cross section) of a thread of the textile.
  • the desired height can be achieved by deforming the fabric in the direction of height (e.g., by undulating, embossing, or folding, etc.) or directly by shaping it
  • one-piece is to be understood macroscopically for the distribution structure. Microscopically very different threads or yarns can be arranged, intertwined, soldered together, etc.
  • the first layer according to the invention is formed as an open layer, with a wide-meshed branch, whereas the second layer is formed as a dense layer and has a close-knit branching.
  • an open layer with a wide-meshed branching is understood as meaning a layer which has a high permeability, at least for hydrogen, air and water, so that these substances can consequently be transported through the layer essentially without resistance.
  • a dense layer with a close-knit branch is understood to mean a layer which has a lower, preferably significantly lower, permeability, at least for hydrogen, air and water, so that the substances mentioned only under resistance, in particular under high resistance the layer can be transported.
  • the permeability through the closed layer is technically negligible. Concerning.
  • the density of the branching, the dense layer in this case preferably at least five times the branching density, more preferably at least ten times the branching density, in particular at least twenty times the branching density of the open layer.
  • the branching density of the layers of the distribution structure in this case is measured as the number of branches per unit length.
  • Distribution structure here may be both homogeneously formed and composed exclusively of fibers of the same material, as well as formed inhomogeneous and then be composed accordingly of fibers of different materials.
  • an inhomogeneous distribution structure can not only be two, but also more than two different
  • the textiles can be constituted objectively in a variety of ways, for example in the form of woven, knitted, knitted, embroidered, braided, stitchbonded, nonwoven or felted fabrics and the like. These structures may further be composed of individual fibers and / or yarns and / or threads and / or wires and the like.
  • An inventive distribution structure formed from a three-dimensional textile is characterized not only by a simple and cost-effective
  • the distribution structure according to the invention comprises more than two layers, preferably at least five layers, which are arranged alternately one above the other in terms of layer density (thus forming a certain height).
  • These layers can have a three-dimensional shape, in particular with a defined height (also called layer thickness).
  • a defined height also called layer thickness.
  • the layer density arranged alternately one above the other means that a open layer is not immediately adjacent to another open layer and a dense layer is not located immediately adjacent to another dense layer, but between two open layers is always arranged a dense layer or between two dense layers is always arranged an open layer.
  • all provided layers can be formed from a three-dimensional textile having a metal material, which are each arranged directly adjacent to one another and electrically conductively connected to one another.
  • the individual open and the individual dense layers with respect to the layer density can also vary.
  • the layers of the distribution structure according to the invention are consequently connected to one another.
  • the layers can be connected to one another in a form-fitting and / or non-positive and / or materially bonded manner.
  • the different types of connection can also be combined with each other.
  • a interlocking connection the layers of the distribution structure according to the invention, for example, via a tongue and groove connection, a dovetail connection or a toothed coupling can be interconnected.
  • a non-positive connection can, for example, be wedged or clamped, in particular screwed.
  • layers can, for example, also be connected to one another via an adhesive connection, preferably via a welded connection, in particular via a solder connection.
  • the layers may in particular be gas-welded, arc-welded,
  • the layers can be high temperature brazed, preferably brazed, in particular soft soldered.
  • connecting means preferably electrically conductive wires or the like may be provided, so that the connecting means not only the one-piece design of
  • Connecting means preferably designed such that they can be performed by each layer of the manifold structure at least once, preferably multiple times, so that the individual layers can be effectively intertwined with each other.
  • the layers can also be objectively woven, put together, co-knitted, knitted together, embroidered or crocheted together by means of the connecting means.
  • Electrolyzers are subject to special technical requirements.
  • the structures not only have to have a high electrical and thermal conductivity, but also have to be robust against chemical influences in the cell as well as the high mechanical contact pressures in the cell can withstand.
  • it is particularly suitable for use in
  • the layers of the distribution structure according to the invention are at least partially made of a metal material, preferably at least partially made of a copper material and / or a nickel material and / or a silver material and / or a gold material.
  • Distribution structure at least partially made of a titanium material and / or steel and / or made of an aluminum material and / or a non-metallic material, in particular a plastic and / or a ceramic.
  • a non-metal material may be provided for this purpose with a corresponding electrically conductive coating.
  • the layers formed as three-dimensional textiles are composed of at least two, preferably more than two different materials, wherein preferably the material and the form of the materials used can be combined with one another depending on the desired properties of the distribution structure.
  • a first layer of the distribution structure at least partially from a
  • Copper material may be formed, while a second layer may be formed at least partially from an aluminum material.
  • an i.d.R. be made of lightweight construction having a greater weight dense layer, while still ensuring a high electrical conductivity of both parts.
  • the layers of the distribution structure according to the invention are formed at least partially from a non-metal material, preferably from a plastic and / or from glass and / or from a ceramic and / or from a carbon compound.
  • a non-metal material preferably from a plastic and / or from glass and / or from a ceramic and / or from a carbon compound.
  • the metal material can be introduced to or into the layer of the distribution structure formed from a non-metal material in various ways.
  • an introduction can take place via a coating of the non-metal material, or, for example, in the form of threads or particles and the like can be introduced into the non-metal material.
  • the latter can be coated with the metal material (s) either before or after the production of the distribution structure, with a coating being produced prior to manufacture of the metal material
  • the subject distribution structure may at least partially made of a plastic, preferably a polystyrene, a polyester, a polyethylene, a polyethylene terephthalate, a polyamide or a
  • Polybuthylene terephthalate may be formed. Furthermore, the structure may be the same
  • the wires or fibers can be formed at least partially from electrically conductive material, in particular metal, such as copper, aluminum or iron, and be provided with the coating. This coating can also be thermally fusible.
  • the layers of the distribution structure formed as three-dimensional textiles are at least partially woven and / or embroidered and / or knitted and / or knitted and / or braided and / or buffed or pressed and / or crocheted or may be made by another textile process which appears to be suitable to a person skilled in the art.
  • Such a structure allows effective, in particular targeted gas distribution and flow guidance along the
  • interconnected layers can also be integrated as part of a textile manufacturing process, e.g. by the creation of spacer fabrics or the like be made, with which
  • layers of the distribution structure according to the invention beyond at least partially made of a non-metal material, preferably plastic and / or glass and / or ceramic and / or carbon.
  • a non-metal material preferably plastic and / or glass and / or ceramic and / or carbon.
  • Distribution structure for example, at least partially be provided with a plastic sheath, in particular a thermoplastic sheath or the like, so that can be dispensed with a subsequent corrosion coating of the distribution structure.
  • At least the first layer is sealed laterally in the same way as the second layer. This can be tlw. Or all layers laterally sealed in the same shape with the same sealing elements, whereby a simplified structure is achieved.
  • Distribution structure are formed at least partially from a solder material, preferably a brazing filler, particularly preferably a soft solder, in particular a diffusion solder, wherein the solder material preferably locally or over the entire surface in the layers formed as three-dimensional textiles is incorporated.
  • a solder material preferably a brazing filler, particularly preferably a soft solder, in particular a diffusion solder, wherein the solder material preferably locally or over the entire surface in the layers formed as three-dimensional textiles is incorporated.
  • solder material can advantageously also be provided for sealing the distribution structure to the outside. Therefore, it is proposed according to the invention that the solder material is preferably arranged on the edge regions of the layers of the distribution structure. That way, that seals
  • the solder material may at least partially combinsilberartig and / or nickel silver or brass-based and / or phosphorus-based and / or aluminum-based and / or nickel-based and or be formed on an iron basis.
  • the solder material may meanwhile be formed at least partially based on tin and / or antimony-based and / or leaded and / or lead-free.
  • a reflow soldering method may be used, in which the solder paste used is preferably applied to one, in particular to both parts to be joined.
  • the brazing material formed from diffusion solder the solder material formed from diffusion solder
  • solder material in particular alloys, include a
  • the use of diffusion solder is characterized in particular by the low temperatures that are used for joining, whereby a particularly gentle material joining is made possible.
  • An incorporation of the soldering material may in this case preferably take place in the form of wires, which may preferably be incorporated locally into the layers of the distribution structure, so that the layers of the distribution structure formed as three-dimensional textiles can be connected to one another in a materially cohesive manner by thermal treatment.
  • a sealing of the distribution structure can also be effected by means of the
  • Coating for example, by local heating or chemical treatment or the like.
  • the layers of the distribution structure according to the invention which are formed as three-dimensional textiles, have defined channels for
  • the channels can vary in particular with respect to their size and distribution over the layers, so that in this way a controlled flow guidance is made possible.
  • solder-bridge-like structures or the like can also be provided as additional direction sensors for controlling the flow.
  • a bipolar plate for a fuel cell comprising a distribution structure according to the invention.
  • FIG. 1 is a schematic representation of a fuel cell stack with a plurality of fuel cells
  • Fig. 2 is a schematic representation of an inventive
  • Distribution structure according to a first embodiment in a three-dimensional view
  • FIG. 3 shows a sectional view of the distribution structure according to the invention from FIG. 2 along the section line A-A ', FIG.
  • Fig. 4 is a schematic representation of an inventive
  • Distribution structure according to a second embodiment in a three-dimensional view
  • FIG. 5 shows a sectional view of the distribution structure according to the invention from FIG. 4 along the section line A - A ', FIG.
  • Fig. 6a is a schematic representation of a partial section of a dense
  • Fig. 6b is a schematic representation of a partial section of a dense
  • FIG. 1 shows a schematic representation of a fuel cell stack 5 with a plurality of fuel cells 2.
  • Each fuel cell 2 has a membrane electrode unit 10 which comprises a first electrode 21, a second electrode 22 and a membrane 18.
  • the two electrodes 21, 22 are arranged on mutually opposite sides of the membrane 18 and thus separated from each other by the membrane 18.
  • the first electrode 21 is also referred to below as the anode 21, the second electrode 22 is also referred to below as the cathode 22.
  • the membrane is designed as a polymer electrolyte membrane 18.
  • Each fuel cell 2 also has two bipolar plates 40 which are connected to the membrane electrode unit 10 on both sides. At the shown here
  • each of the bipolar plates 40 may be regarded as belonging to two fuel cells 2 arranged adjacent to each other.
  • the bipolar plates 40 each include a first layer 50 for distributing a fuel facing the anode 21.
  • the bipolar plates 40 also each comprise a second layer 1 for distributing the oxidant, which faces the cathode 22.
  • the second layer 1 serves at the same time for the derivation of water formed during a reaction in the fuel cell 2.
  • the bipolar plates 40 further include a third layer 70 disposed between the first layer 50 and the second layer 1.
  • the third layer 70 serves to pass a coolant through the bipolar plate 40 and thus to cool the fuel cells 2 and the fuel cell stack 5.
  • the first layer 50 and the third layer 70 are separated by a first inner separation layer 85.
  • the second layer 1 and the third layer 70 are separated from each other by a second inner separation layer 86.
  • the inner separating layers 85,86 of the bipolar plate 40 are formed fluid-tight.
  • fuel is conducted via the first layer 50 to the anode 21.
  • oxidizing agent is via the second
  • Hydrogen is catalytically oxidized at the anode 21 with the emission of electrons to protons.
  • the protons pass through the membrane 18 to the cathode 22.
  • the emitted electrons flow through the layers 50, 70, 1 to the cathode 22 of the adjacent fuel cell 2, or from the anode 21 of the peripheral fuel cell 2 via an external circuit the cathode 22 located at the other edge
  • Fuel cell 2 The oxidizing agent, in the present case atmospheric oxygen, reacts by taking up the thus conducted electrons and the protons, which through the
  • FIG. 2 shows a schematic representation of the invention
  • Distribution structure 40 'of a bipolar plate 40 which is here shown rotated by 180 ° with respect to the illustration of FIG. 1 ..
  • the top layer 4 is similar to the layer 1 of FIG. 1, the underlying layer 6 of the layer 86, which thereon down following layer 4 of the layer 70, the further down subsequent thereto layer 6 of the layer 85, and the lowermost layer 4 of the layer 50th
  • Bipolar plate 40 shows the layer structure of the present five different layers (4, 6, 4, 6, 4). With regard to the layer densities, these are arranged alternately one above the other so that an open layer 4 is arranged between two dense layers 6 both from the top side 9 and from the underside 9 'of the bipolar plate 40 and is surrounded by two further open layers 4.
  • the layers 4 and 6 of the distribution structure 40 ' are in this case a one
  • Formed metal material having three-dimensional textile and electrically conductively connected together.
  • the open layers 4 are formed in the form of a wide-meshed branch, whereas the dense layers 6 are formed in the form of a close-meshed branch.
  • the open layers 4 with a wide-meshed branching are formed in such a way that they have a significantly higher permeability than the dense layers 6, at least for hydrogen, air and water, so that via the layers 4 and channels arranged within the layers 4 a defined and controllable flow guidance through the
  • Distribution structure 40 'of a bipolar plate 40 can be ensured therethrough.
  • the density of the branch in this case preferably at least five times the branching density, more preferably at least ten times the branching density, in particular at least twenty times the branching density of the open layer.
  • the branching density of the layers of the distribution structure in this case is measured as the number of branches per unit length.
  • integrally formed distribution structure 40 'of a bipolar plate 40 the layers 4 and 6 are interconnected.
  • the layers 4, 6 can be positively connected to one another in a form-fitting and / or non-positive and / or material-locking manner.
  • connection means 12 it can be provided according to the invention-as illustrated here-that the individual layers of the distribution structure 40 'are connected via connecting means 12
  • Connecting means 12 presently formed as electrically conductive wires, which not only serve to connect the individual layers 4, 6 of the distribution structure 40 ', but also ensure improved electrical conductivity between the individual layers 4, 6.
  • FIG. 3 shows a sectional view of the distribution structure 40 'according to the invention from FIG. 2 along the section line A-A', from which the layer structure according to the invention clearly appears. Visible here are, in addition to the individual layers 4, 6, also the connecting means 12 which are presently in the form of wires and which, alternatively or in addition to a form-fitting,
  • Fig. 4 shows a schematic representation of an inventive
  • FIG. 2 shows the distribution structure 40 'according to FIG. 4 additionally within the layers of the distribution structure 40'.
  • solder wires solder material 8 for connecting the individual layers 4, 6.
  • the solder material 8 can advantageously also for Seal these layers may be provided with each other, for example, to improve the sealing effect of the dense layers 6. Therefore, the solder material 8 in the present case is preferably also arranged only in the layers 6 or at the edge regions of the layers 4 of the distribution structure 40 ', so that in this way upon heating and subsequent hardening of the solder material 8, the layers 6 and the interfaces between the Layers 4 and 6 are sealed.
  • FIG. 5 shows a sectional view of the distribution structure 40 'according to the invention from FIG. 4 along the section line A - A', from which the layer structure according to the invention clearly appears. It can be seen here in addition to the individual layers 4, 6 and the present in the form of solder wires solder material 8 for connecting the layers 4, 6 and for additional sealing of the dense layers 6 against the media-carrying open layers 4. According to the embodiment shown in Fig. 5 the solder material 8 has not yet been heated, so that the layers 4, 6 in the present case are not yet connected to each other.
  • solder material according to FIGS. 4 and 5 is only within the dense
  • Layers 6 arranged. This can be advantageous if the layer density of the open layers 4, for example, is very small, so that the solder material 8 can not be held sufficiently firmly within the layers. Otherwise, however, the solder material may as well also be arranged within the open layers 4. Likewise, it can also be provided that the solder material is distributed over its entire surface within the layers 4, 6.
  • FIG. 6a shows a schematic representation of a partial section of a dense layer 6 of the distribution structure 40 'according to the invention from FIG. 4 before a seal.
  • the solder material 8 is arranged here in the form of a solder wire within the dense layer 6 and has not yet been heated.
  • Fig. 6b shows a schematic representation of a partial section of a dense layer 6 of the distribution structure according to the invention 40 'of FIG. 4 after a successful sealing, in which the solder material 8 is melted as a result of heating and then solidified again and now as shown in FIG. 6b recognizable the Layer 6 to the outside and to the open layers 4 seals.
  • a seal can also by means of the melting of already incorporated within the layers of plastics, for example.
  • thermoplastic in the form of thermoplastic

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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 structure de distribution multicouche (40') pour une plaque bipolaire (40) d'une pile à combustible (2), comportant au moins une première couche (4) et une deuxième couche (6) disposée directement sur la première couche (4) et reliée électriquement à la première couche (4), la structure de distribution (40') étant formée d'une seule pièce et les deux couches (4, 6) étant formées d'un textile tridimensionnel comprenant un matériau métallique, la première couche (4) étant formée comme une couche ouverte, pourvue d'une ramification à larges mailles et la deuxième couche (6) comme une couche dense, pourvue d'une ramification à mailles étroites.
PCT/EP2019/055695 2018-03-14 2019-03-07 Structure de distribution pour une plaque bipolaire d'une pile à combustible Ceased WO2019175013A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018203825.2 2018-03-14
DE102018203825.2A DE102018203825A1 (de) 2018-03-14 2018-03-14 Verteilstruktur für eine Bipolarplatte einer Brennstoffzelle

Publications (1)

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WO2019175013A1 true WO2019175013A1 (fr) 2019-09-19

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PCT/EP2019/055695 Ceased WO2019175013A1 (fr) 2018-03-14 2019-03-07 Structure de distribution pour une plaque bipolaire d'une pile à combustible

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WO (1) WO2019175013A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114551928A (zh) * 2021-12-25 2022-05-27 安徽明天氢能科技股份有限公司 一种燃料电池用双电堆并联装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013223776A1 (de) * 2013-11-21 2015-05-21 Robert Bosch Gmbh Separatorplatte für einen Brennstoffzellenstapel
DE102015224189A1 (de) * 2015-12-03 2017-06-08 Bayerische Motoren Werke Aktiengesellschaft Herstellungsverfahren für eine Bipolarplatte für Brennstoffzellen
DE102017217901A1 (de) * 2017-10-09 2019-04-11 Robert Bosch Gmbh Gasverteilerplatte für eine Brennstoffzelle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013223776A1 (de) * 2013-11-21 2015-05-21 Robert Bosch Gmbh Separatorplatte für einen Brennstoffzellenstapel
DE102015224189A1 (de) * 2015-12-03 2017-06-08 Bayerische Motoren Werke Aktiengesellschaft Herstellungsverfahren für eine Bipolarplatte für Brennstoffzellen
DE102017217901A1 (de) * 2017-10-09 2019-04-11 Robert Bosch Gmbh Gasverteilerplatte für eine Brennstoffzelle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114551928A (zh) * 2021-12-25 2022-05-27 安徽明天氢能科技股份有限公司 一种燃料电池用双电堆并联装置
CN114551928B (zh) * 2021-12-25 2024-02-20 安徽明天氢能科技股份有限公司 一种燃料电池用双电堆并联装置

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