EP4584835A2 - Plaque bipolaire et cellule électrochimique - Google Patents

Plaque bipolaire et cellule électrochimique

Info

Publication number
EP4584835A2
EP4584835A2 EP23720762.6A EP23720762A EP4584835A2 EP 4584835 A2 EP4584835 A2 EP 4584835A2 EP 23720762 A EP23720762 A EP 23720762A EP 4584835 A2 EP4584835 A2 EP 4584835A2
Authority
EP
European Patent Office
Prior art keywords
sheet
embossed structures
bipolar plate
area
fluid
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.)
Pending
Application number
EP23720762.6A
Other languages
German (de)
English (en)
Inventor
Sebastian Zwahr
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.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co KG
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 Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of EP4584835A2 publication Critical patent/EP4584835A2/fr
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/02—Hydrogen or oxygen
    • C25B1/04—Hydrogen or oxygen by electrolysis of water
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B13/00—Diaphragms; Spacing elements
    • C25B13/02—Diaphragms; Spacing elements characterised by shape or form
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/17—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof
    • C25B9/19—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/60—Constructional parts of cells
    • C25B9/65—Means for supplying current; Electrode connections; Electric inter-cell connections
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/70—Assemblies comprising two or more cells
    • C25B9/73—Assemblies comprising two or more cells of the filter-press type
    • C25B9/75—Assemblies comprising two or more cells of the filter-press type having bipolar electrodes
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/70—Assemblies comprising two or more cells
    • C25B9/73—Assemblies comprising two or more cells of the filter-press type
    • C25B9/77—Assemblies comprising two or more cells of the filter-press type having diaphragms
    • 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
    • H01M8/0271—Sealing or supporting means around electrodes, matrices or membranes
    • 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]
    • 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
    • H01M8/1016—Fuel cells with solid electrolytes characterised by the electrolyte material
    • H01M8/1018—Polymeric electrolyte materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/10—Fuel cells with solid electrolytes
    • H01M2008/1095—Fuel cells with polymeric electrolytes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
    • 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 comprising a first half sheet and a second half sheet, which are firmly connected to one another, the bipolar plate having a plurality of fluid passage openings comprising fluid inlet openings and fluid outlet openings, a first distribution field for distributing a fluid, an active field and a second distribution field for distributing the fluid are arranged on both sides of the bipolar plate, and with at least one seal on each side of the bipolar plate, with a transition region being formed between a fluid passage opening and an adjacent distribution field.
  • DE 10 2014 225 160 A1 describes a metal separator, that is, a bipolar plate, for a fuel cell stack with an anode separator and a cathode separator.
  • DE 10 2014 225 160 A1 describes an embodiment of a transition region which is formed in the metal separator between a fluid passage opening and an active region, not shown in detail, in which electrochemical reactions take place.
  • the metal separator has a seal on both sides, with the seals being arranged offset from one another. At the inlet and outlet of the metal separator, support elements embossed into the separators are also arranged, which form channels for the fluids for operating the fuel cell stack.
  • a further object of the invention is to provide an electrochemical cell with such improved bipolar plates.
  • the second half-sheet starting from the fluid inlet opening in the area of the first stage, is provided with a third step in the direction of the first half-sheet and in the area of the second stage is provided with a fourth step, which is directed away from the first half-sheet,
  • the first half-sheet has, in an area between the first stage and the second stage, parallel, elongated, three-dimensional first embossed structures which are curved in the direction of the second half-sheet,
  • the second half sheet in an area between the third stage and the fourth stage has elongated, three-dimensional second embossed structures which are aligned parallel to one another, which are curved in the direction of the first half sheet, are arranged in alignment with the first embossed structures and are supported against the first embossed structures,
  • the first half sheet has a first sealing area, which is formed in the area of the first embossed structures on the side of the first half sheet facing away from the second half sheet and runs transversely to the first embossed structures and is arranged to decay
  • - the second half-sheet has a second sealing area, which is arranged in the area of the second embossed structures on the side of the second half-sheet facing away from the first half-sheet transversely to the second embossed structures and decaying, the first sealing area and the second sealing area being perpendicular to one of the plane spanned by the bipolar plate are arranged congruently one above the other, and
  • the second half-sheet has an opening slot which is arranged between the fourth stage and the adjacent distribution field, with three-dimensional third embossed structures being present which are curved in the direction of the first half-sheet, are arranged in alignment with the second embossing structures in a fluid flow direction and are against the Support the first half sheet, the opening slot being arranged such that the third embossed structures arranged in the second half sheet are intersected by it.
  • the second half-sheet starting from the fluid outlet opening in the area of the third stage in the first half-sheet, is provided with a first step in the direction of the first half-sheet and in the area of the fourth step in the first half-sheet is provided with a second step, which is directed away from the first half-sheet,
  • the first half-sheet in a region between its third stage and its fourth stage has elongated, three-dimensional further first embossed structures which are aligned parallel to one another and which are curved in the direction of the second half-sheet
  • - the second half-sheet in a region between its first stage and its second stage has further second embossed structures aligned parallel to one another, elongated three-dimensional, which are curved in the direction of the first half sheet, are arranged in alignment with the further first embossed structures and are supported against the further first embossed structures
  • the first half sheet has a third sealing area, which is formed in the area of the further first embossed structures on the side of the first half sheet facing away from the second half sheet and runs transversely to the further first embossed structures and is arranged to decay,
  • the second half-sheet has a further opening slot, which is arranged between its second stage and the adjacent distribution field, with three-dimensional further third embossed structures being present, which are curved in the direction of the first half-sheet, are arranged in alignment with the further second embossed structures in a fluid flow direction and are supported against the first half sheet, the further opening slot being arranged in such a way that the further third embossed structures arranged in the second half sheet are intersected by it.
  • the advantages of this arrangement in the area of a fluid outlet opening are analogous to those described above for the fluid inlet opening.
  • “congruent” means that the center lines of the third and fourth sealing areas lie one above the other when viewed perpendicular to the plane spanned by the bipolar plate.
  • the width of the third seal area and the fourth seal area may differ slightly.
  • the first embossed structures and the second embossed structures are preferably aligned with their longitudinal axes in the direction of a fluid flow direction between the fluid passage opening and the adjacent distribution field.
  • the first and second embossed structures are preferably elongated in a straight line and have a constant width and length, so that they optimally support each other.
  • a first fluid inlet opening for supplying and a first fluid outlet opening for removing oxidizing gas is preferably set up on a first side of the bipolar plate.
  • a second fluid inlet opening for supplying and a second fluid outlet opening for discharging fuel gas is preferably set up on a second side of the bipolar plate.
  • each half sheet of the bipolar plate is structured three-dimensionally in the area of the first distribution field, the active field and the second distribution field to form fluid conduction paths.
  • Such a structuring is formed in particular by embossing the half sheets.
  • the structuring can take place through the formation of channels, locally limited elevations or depressions and the like.
  • a fluid conduction path for a coolant is preferably formed between the first half sheet and the second half sheet of the bipolar plate. This is fed via a fluid inlet opening. A fluid outlet opening serves to drain the coolant.
  • the electrochemical cell is preferably an electrolysis cell for the electrolysis of water or a polymer electrolyte fuel cell for the decomposition of water into hydrogen as fuel and oxygen as oxidation gas.
  • FIG. 4 shows a side view of the section of the bipolar plate according to FIG. 2 seen from the side of the fluid inlet opening
  • FIG. 5 shows a side view of the section of the bipolar plate according to FIG. 2 seen from the side of the distribution field
  • FIG. 6 shows a three-dimensional view of the section of the bipolar plate according to FIG. 2 without showing the seal 6 ',
  • Figure 9 is a schematic three-dimensional representation of a stack arrangement of electrochemical cells.
  • Figure 1 shows a rectangular bipolar plate 1 in a top view from one side B.
  • the bipolar plate 1 comprises a first half-sheet 1a and a second half-sheet 1b (see Figure 2), which are firmly connected to one another, for example by welding, gluing or the like .
  • the bipolar plate 1 also has a plurality of fluid passage openings 2, which are arranged at both ends of the rectangular bipolar plate 1.
  • the fluid passage openings 2 include fluid inlet openings 2a, 2c, 2e and fluid outlet openings 2b, 2d, 2f. Between the fluid passage openings 2 there is a first distribution field 3 for distributing a fluid, an active field 4 and a second distribution field 5 for distributing the fluid.
  • the first half sheet 1 a is provided, starting from the fluid inlet opening 2c, with a first step 8a and a second step 8b in the direction of the second half sheet 1 b.
  • the second half sheet 1 b is provided, starting from the fluid inlet opening 2c in the area of the first stage 8a, with a third step 8c in the direction of the first half sheet 1 a and in the area of the second step 8b with a fourth step 8c, which is provided by the first half sheet 1 a is directed away.
  • the second half-sheet 1 b has a second sealing area 6b with two parallel sealing beads 10a, 10b, which in the area of the second embossed structures 9b on the side of the second half-sheet 1 b facing away from the first half-sheet 1 a runs transversely to the second embossed structures 9b and this is arranged to expire.
  • the second embossed structures 9b are therefore also filled with sealing compound and stiffened.
  • the first sealing area 6a and the second sealing area 6b lie congruently one above the other when viewed perpendicular to a plane spanned by the bipolar plate 1 and thus run parallel on side A and side B of the bipolar plate 1.
  • the second half sheet 1 b has an opening slot 11, which is arranged between the fourth stage 8d and the adjacent distribution field 5, with three-dimensional third embossed structures 9c being present which are curved in the direction of the first half sheet 1 a.
  • the third embossed structures 9c are arranged in alignment with the second embossed structures 9b in a fluid flow direction S and are supported against the first half sheet 1a.
  • the opening slot 11 is arranged in such a way that the third embossed structures 9c arranged in the second half sheet 1b are intersected by it. Accordingly, when the opening slot 11 was formed, a part of the second half sheet 1b was cut out, which contained part of the previously formed third embossed structures 9c.
  • Figure 4 shows a side view of the section of the bipolar plate 1 according to Figure 2 seen from the side of the fluid inlet opening 2c.
  • the same reference numbers as in Figure 2 indicate the same elements.
  • the first embossed structures 9a and the second embossed structures 9b can now be clearly seen, which are supported on one another and form a flow channel for a fluid between the two half-sheets 1a, 1b.
  • the flow channel runs towards the opening slot 11.
  • Figure 5 shows a side view of the section of the bipolar plate 1 according to Figure 2 seen from the side of the distribution panel 5.
  • the same reference numbers as in Figure 2 indicate the same elements.
  • the third embossed structures 9c and the opening slot 11 can now be clearly seen, which allows fluid to flow between the two half-sheets 1a, 1b.
  • Figure 6 shows a three-dimensional view of the section of the bipolar plate 1 according to Figure 2 without showing the seal 6 'or the second sealing area 6b.
  • the elongated second embossed structures 9b and the third embossed structures 9c can be seen, which are arranged one behind the other in alignment in the fluid flow direction S.
  • the first pre- Structures 9a in the first half sheet 1a cannot be seen here.
  • the same reference numbers as in Figure 2 indicate the same elements.
  • Figure 7 shows a three-dimensional view of the section of the bipolar plate 1 according to Figure 2 with the seal 6 'or the second seal section 6b.
  • the first embossed structures 9a in the first half sheet 1 a and the third embossed structures 9c in the second half sheet 1 b can be seen here.
  • the second embossed structures 9b in the second half sheet 1b cannot be seen here and are covered by the seal 6 '.
  • the same reference numbers as in Figure 2 indicate the same elements.
  • Figure 8 shows a cross section III-IH' through the bipolar plate 1 from Figure 1 in the area of a fluid outlet opening 2d for unused fuel.
  • the first half-sheet 1a has a third step 8c' and a fourth step 8d' in the direction of the second half-sheet 1b, starting from the fluid outlet opening 2d.
  • the second half sheet 1 b is provided with a first step 8a' in the direction of the first half sheet 1 a, starting from the fluid outlet opening 2d in the area of the third stage 8c 'in the first half sheet 1 a and in the area of the fourth step 8d' in the first half sheet 1 a provided with a second step 8b ', which is directed away from the first half sheet 1a.
  • the first half-sheet 1a has, in an area between its third step 8c' and its fourth step 8d', parallel, elongated, three-dimensional further first embossed structures 9a', which are curved in the direction of the second half-sheet 1b.
  • the second half sheet 1 b has in an area between its first step 8a 'and its second step 8b' parallel, elongated, three-dimensional further second embossed structures 9b', which are curved in the direction of the first half sheet 1 a, with the further first embossed structures 9a' are arranged in alignment and are supported against the further first embossed structures 9a'.
  • the first half sheet 1 a has a third sealing area 6c, which is formed in the area of the further first embossed structures 9a 'on the side of the first half sheet 1 a facing away from the second half sheet 1 b and runs transversely to the further first embossed structures 9a' and these is arranged to decay.
  • the other first embossed structures 9a' are therefore filled with sealing compound and stiffened.
  • the second half-sheet 1 b has a fourth sealing area 6d, which is arranged in the area of the further second embossed structures 9b 'on the side of the second half-sheet 1 b facing away from the first half-sheet 1a, running transversely to the further second embossed structures 9b' and filling them.
  • the further second embossed structures 9b' are therefore filled with sealing compound and stiffened.
  • the third sealing area 6c in the form of a flat seal and the fourth sealing area 6d comprising two sealing beads 10a, 10b running parallel to one another run congruently one above the other when viewed perpendicular to a plane spanned by the bipolar plate 1 and thus run parallel on side A and side B of the bipolar plate 1 .
  • the second half-sheet 1b has a further opening slot 11 ', which is arranged between its second step 8b' and the adjacent distribution field 3, with three-dimensional further third embossed structures 9c' being present, which are curved in the direction of the first half-sheet 1a.
  • the further second embossed structures 9b' and the further third embossed structures 9c' are arranged aligned in a fluid flow direction S and are supported against the first half sheet 1a.
  • the further opening slot 11 ' is arranged in such a way that the further third embossed structures 9c' arranged in the second half sheet 1 b are intersected by it.
  • a fluid in the form of an oxidizing agent such as in particular in the form of air or oxygen.
  • the oxidizing agent flows via the fluid inlet opening 2a onto side A of the bipolar plate 1 and thus via an analogous arrangement as in the transition region 7 on side B of the bipolar plate 1 via an opening slot in the first half plate 1a into a distribution field, onto the active field further distribution field and another opening slot in the first half plate 1a in Direction of the fluid outlet opening 2b.
  • the name of the half plates should be used in reverse.
  • the basic design for the oxidizer inlet and outlet corresponds to that for the fuel inlet and outlet on the side B of the bipolar plate 1.
  • the fluid inlet opening 2e (see FIG. 1) is set up for the supply of coolant into a fluid guide path or flow space, not shown, between the two half-plates 1a, 1b of the bipolar plate 1.
  • the coolant flows along the rectangular bipolar plate 1 and into the fluid outlet opening 2f, the geometry of the fluid conduction path being predetermined by the two structured half-sheets 1a, 1b.
  • the area between the fluid outlet opening 2f at the transition into the fluid conduction path between the half plates 1a, 1b is not subject to any design specifications and can be designed in any way.
  • the geometric design of the fluid passage openings 2, the distribution fields 3, 5 and the active field 4 can be changed within wide limits and does not have to be designed as shown in FIGS. 1 to 8.
  • FIG. 9 shows a schematic three-dimensional representation of a stack arrangement 20 of several electrochemical cells 12.
  • An electrochemical cell 12 comprises several bipolar plates 1, 1 'and, arranged between two bipolar plates 1, 1', a membrane electrode unit 13, each with one here on both sides fluid transport layer not shown separately is occupied.
  • the distribution fields between the fluid passage openings 2 and the active field 4 have also been omitted.
  • the cross section of the fluid passage openings 2 was circular here.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • Fuel Cell (AREA)
  • Cell Electrode Carriers And Collectors (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)

Abstract

L'invention concerne une plaque bipolaire (1) et une cellule électrochimique (12) comprenant une pluralité de plaques bipolaires (1, 1') de ce type. La plaque bipolaire (1) comprend une première demi-tôle (1a) et une deuxième demi-tôle (1b) qui sont reliées de manière fixe l'une à l'autre, la plaque bipolaire (1) comportant plusieurs ouvertures de passage de fluide (2) comprenant des ouvertures d'entrée de fluide (2a, 2c, 2e) et des ouvertures de sortie de fluide (2 b, 2 d, 2f), un premier champ de distribution (3) pour la distribution d'un fluide, un champ actif (4) et un deuxième champ de distribution (5) pour la distribution du fluide étant disposés de part et d'autre sur la plaque bipolaire (1), et au moins un joint d'étanchéité (6, 6') sur chaque côté de la plaque bipolaire (1), dans au moins une zone de transition (7) entre une ouverture de passage de fluide (2) et un champ de distribution (3, 5) adjacent, les joints d'étanchéité (6, 6') étant superposés de manière congruente, lorsqu'ils sont observés perpendiculairement à un plan tendu par la plaque bipolaire (1), et sont renforcés par des structures d'estampage (9a, 9b).
EP23720762.6A 2022-09-07 2023-04-25 Plaque bipolaire et cellule électrochimique Pending EP4584835A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022122717.0A DE102022122717B3 (de) 2022-09-07 2022-09-07 Bipolarplatte und elektrochemische Zelle
PCT/DE2023/100296 WO2024051876A2 (fr) 2022-09-07 2023-04-25 Plaque bipolaire et cellule électrochimique

Publications (1)

Publication Number Publication Date
EP4584835A2 true EP4584835A2 (fr) 2025-07-16

Family

ID=86286094

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23720762.6A Pending EP4584835A2 (fr) 2022-09-07 2023-04-25 Plaque bipolaire et cellule électrochimique

Country Status (7)

Country Link
US (1) US20260088313A1 (fr)
EP (1) EP4584835A2 (fr)
JP (1) JP2025528202A (fr)
KR (1) KR20250037774A (fr)
CN (1) CN119604997A (fr)
DE (1) DE102022122717B3 (fr)
WO (1) WO2024051876A2 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102024111490A1 (de) 2024-04-24 2025-10-30 Schaeffler Technologies AG & Co. KG Bipolarplatte, Plattenanordnung und Elektrolyseur

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20110013963A (ko) * 2009-08-04 2011-02-10 현대자동차주식회사 연료전지용 분리판
JP5236024B2 (ja) * 2011-01-12 2013-07-17 本田技研工業株式会社 燃料電池
KR101601382B1 (ko) 2013-12-31 2016-03-08 현대자동차주식회사 연료전지 스택의 금속분리판
DE102015211930A1 (de) * 2015-06-26 2016-12-29 Bayerische Motoren Werke Aktiengesellschaft Separatorplatte für eine Brennstoffzelle
CN208722997U (zh) 2018-08-30 2019-04-09 北京新研创能科技有限公司 一种燃料电池双极板
DE102020202075A1 (de) 2020-02-19 2021-08-19 Robert Bosch Gesellschaft mit beschränkter Haftung Elektrochemische Zelle mit Zuführungsvorrichtung

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Publication number Publication date
DE102022122717B3 (de) 2023-08-03
CN119604997A (zh) 2025-03-11
JP2025528202A (ja) 2025-08-26
WO2024051876A2 (fr) 2024-03-14
KR20250037774A (ko) 2025-03-18
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US20260088313A1 (en) 2026-03-26

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