WO2023193878A1 - Ensemble cellule électrochimique avec ensemble plaque d'étanchéité - Google Patents

Ensemble cellule électrochimique avec ensemble plaque d'étanchéité Download PDF

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Publication number
WO2023193878A1
WO2023193878A1 PCT/EP2022/058877 EP2022058877W WO2023193878A1 WO 2023193878 A1 WO2023193878 A1 WO 2023193878A1 EP 2022058877 W EP2022058877 W EP 2022058877W WO 2023193878 A1 WO2023193878 A1 WO 2023193878A1
Authority
WO
WIPO (PCT)
Prior art keywords
gasket
end plate
sealing
assembly
repeat units
Prior art date
Application number
PCT/EP2022/058877
Other languages
English (en)
Inventor
Andrew Ballard
Original Assignee
Ceres Intellectual Property Company Limited
Robert Bosch Gesellschaft mit beschränkter Haftung
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 Ceres Intellectual Property Company Limited, Robert Bosch Gesellschaft mit beschränkter Haftung filed Critical Ceres Intellectual Property Company Limited
Priority to PCT/EP2022/058877 priority Critical patent/WO2023193878A1/fr
Priority to TW112112919A priority patent/TW202408060A/zh
Publication of WO2023193878A1 publication Critical patent/WO2023193878A1/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
    • H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
    • H01M8/2465—Details of groupings of fuel cells
    • H01M8/2484—Details of groupings of fuel cells characterised by external manifolds
    • H01M8/2485—Arrangements for sealing external manifolds; Arrangements for mounting external manifolds around a stack
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
    • H01M8/2465—Details of groupings of fuel cells
    • H01M8/247—Arrangements for tightening a stack, for accommodation of a stack in a tank or for assembling different tanks
    • H01M8/248—Means for compression of the fuel cell stacks

Definitions

  • the invention relates to electrochemical cell assemblies and to end plate assemblies for use in an electrochemical cell assembly, as well as to methods of manufacturing an electrochemical cell assembly. More specifically, the invention relates to the field of fuel cells and electrolyser cells and stacks thereof, including metal-supported solid oxide cells and stacks thereof.
  • Fuel cells and electrolyser cells are examples of electrochemical cells.
  • Fuel cells are energy conversion devices that allow for conversion of electrochemical fuel to electricity.
  • Electrolyser cells are fuels cells running in reverse mode, i.e. using electricity to generate chemicals. Reversible cells are capable of operating in both modes.
  • multiple of such cell units are stacked upon one another to form a "stack" of cell repeat units.
  • Said stack may be held in a compressed state between two end plates provided on opposite sides of the stack, thus forming an electrochemical cell assembly.
  • the end plates in addition to said compression function, typically serve as access points for supplying the cell stack with fuel and/or for electrically contacting the cell stack.
  • an insulation plate may be provided between the end plate and the stack of cell repeat units in order to electrically insulate the end plate from the cell stack.
  • Said insulation plate may comprise through-holes to form fluid pathways for supplying fluid, in particular fuel, to the cell stack.
  • said through-holes may be sealed against the stack of cell repeat units by respective gaskets
  • the insulation plate and the sealing gaskets may cause unfavourable mechanical stresses in the stack of cell repeat units, which may lead to deformation of stack components. It is an object of the present invention to improve sealing and load distribution in an electrochemical cell assembly.
  • an electrochemical cell assembly comprises a first end plate assembly, a stack of cell repeat units, and a second end plate assembly.
  • the stack of cell repeat units comprises a plurality of cell repeat units stacked upon one another along a stacking direction.
  • the stack of cell repeat units is held in a compressed state between said first end plate assembly and said second end plate assembly.
  • the end plate assembly may comprise additional compression means for tensioning said first end plate assembly and said second end plate assembly towards each other along the stacking direction.
  • Such compression means are known in the art, and may e.g. include tension rods, compression springs or bolts, clamps or other means for compression.
  • the first and the second end plate assemblies preferably are provided on opposite sides of the stack of cell repeat units.
  • the first end plate assembly and/or the second end plate assembly each comprise an areally extending end plate and an areally extending sealing device located between said end plate and the stack of cell repeat units.
  • the sealing device preferably is configured to seal the end plate against the stack of cell repeat units and/or to electrically insulate the end plate from the stack of cell repeat units.
  • the sealing device comprises a plurality of sealing repeat units stacked upon one another along the stacking direction, said sealing repeat units preferably being areally extending perpendicular to the stacking direction.
  • the sealing repeat units each comprise an insulation plate, at least one first gasket, and at least one second gasket.
  • the end plate and the insulation plates both areally extend in a direction perpendicular to the stacking direction and in parallel to each other. That is to say, the insulation plates of the sealing device may be stacked upon the end plate along the stacking direction.
  • at least one, preferably two or more, through-holes are provided in said insulation plate to form a fluid pathway along the stacking direction, preferably for supplying fuel to the stack of cell repeat units.
  • the sealing repeat units are stacked upon another along the stacking direction such that the through-holes of the insulation plates of the sealing device together form a fluid channel along the stacking direction.
  • the at least one first gasket is configured to seal the at least one through-hole against an adjacent sealing repeat unit or against the stack of cell repeat units.
  • the at least one second gasket is an areally extending flat (planar) gasket. The at least one second gasket is stacked upon the insulation plate along the stacking direction. Thus, the at least one second gasket and the insulation plate are overlying one another.
  • the proposed configuration allows for improved sealing of the electrochemical cell assembly without causing undue compression on the cell stack that may lead to damage to the cell repeat units.
  • the multilayer (sandwich) configuration allows for better load distribution in the sealing device and, thus, to a more homogeneous load transfer from the end plate to the stack of cell repeat units.
  • mechanical stresses that may lead to bending or deformation of the stack of cell repeat units e.g. a deformation of a current collection (monopole) plate located adjacent to the insulation plate
  • monopole current collection
  • the at least one second gasket is areally extending perpendicular to the stacking direction and in parallel to the insulation plate.
  • flat (second) gaskets and insulation plates are stacked upon one another along the stacking direction in an alternating fashion.
  • each of the sealing repeat units comprises only one second (flat) gasket.
  • the cell repeat units may be fuel cell units, electrolyser cell units or reversible cell units.
  • the cell repeat units may be metal-supported electrochemical cell units.
  • the cell repeat units may be solid oxide fuel cell units or solid oxide electrolyser cell units.
  • the cell units each may comprise multiple layers, including a mechanical support layer, electrochemically active layers, and, optionally, a spacer or interconnector.
  • the electrochemically active layers may comprise a fuel electrode layer, an electrolyte layer and an air or oxidant electrode layer.
  • the electrochemically active layers may be deposited (e.g. as thin coatings or films) on and supported by the mechanical support layer, e.g. by a metal support plate, such as a metal foil.
  • the stack of cell repeat units in addition to said cell repeat units, may comprise further components, such as electrical connectors, electrical contact plates (e.g. monopole plates) or sealing gaskets.
  • the cell repeat units may comprise at least one, preferably two or more, through- holes, said through-holes being in fluid communication with the active layers of the cell units allowing for fluid entering and exiting the cell units (e.g. via respective fluid channels).
  • the through-holes in the cell units may form fluid e.g. fuel ports of the cell units.
  • the stack of cell repeat units may further comprise gaskets, preferably sealing rings, configured to seal said fluid ports of the cell repeat units.
  • the column of fluid ports of the stacked cell repeat units and the optional gaskets of the stack of cell repeat units together form a fluid pathway (or chimney) extending along the stacking direction, said fluid pathway serving as an internal manifold for distributing fluid inside the stack of cell repeat units.
  • the stack of cell repeat units in addition to the cell repeat units, may comprise further components, such as electrical connectors, electrical contact (or current collection) plates (e.g. monopole or endpole plates) or additional sealing gaskets.
  • the at least one first gasket and the at least one second gasket are arranged on the same side of the insulation plate.
  • Said side may be the side of the insulation plate that is facing the stack of cell repeat units or the side that is facing the end plate.
  • the at least one first gasket and the at least one second gasket are arranged next to each other in the same plane. That is to say, the at least one first gasket and the at least one second gasket preferably do not overlap.
  • the at least one first gasket and/or the at least one second gasket may be in direct contact with the insulation plate.
  • the at least one first gasket and/or the at least one second gasket may at least partially cover the surface of the insulation plate.
  • the at least one first gasket and the at least one second gasket of a sealing repeat unit are arranged such that a surface of the at least one first gasket, said surface facing away from the insulation plate (that is facing the stack of cell repeat units), is positioned flush with a surface of the at least one second gasket, said surface facing away from the insulation plate.
  • there is provided levelled support for the stack of cell repeat units thus reducing mechanical stresses that may lead to bending or deformation of the stack of cell repeat units.
  • air bypass may be reduced.
  • the at least one first gasket and the at least one second gasket may have the same thickness along the stacking direction.
  • the at least one second (flat) gasket may provide a flat surface for the stack of cell repeat units by accounting for the thickness of the at least one first gasket.
  • the at least one first gasket and the at least one second gasket are arranged in direct contact with a surface of the insulation plate, said surface facing the stack of cell repeat units, wherein the at least one first gasket and the at least one second gasket do not overlap, and wherein the at least one first gasket and the at least one second gasket have the same thickness along the stacking direction.
  • the insulation plate comprises four through-holes.
  • the insulation plate may comprise four through-holes being arranged diagonally opposite each other with respect to a center point of the insulation plate.
  • at least one first gasket is provided for each of said through- holes (that is through-holes forming a fluid pathway for supplying fluid, in particular fuel, to the stack of cell repeat units).
  • each of said through-holes forming a fluid pathway preferably is assigned a first gasket.
  • the insulation plate may comprise additional through-holes that fulfill different purpose and are not sealed by a gasket.
  • the first gasket is provided around the through-hole assigned to it.
  • the first gasket may be a sealing sheet.
  • the sealing sheet may comprise at least one through-hole complementary to the shape, in particular to the diameter, of the through-hole.
  • the gasket is a sealing ring.
  • the first gasket, in particular the sealing ring is arranged coaxially to the corresponding through-hole in the insulation plate.
  • the at least one second gasket preferably at least partially is located in an area defined between the through-holes. That is to say, an area of the insulation plate located between the through-holes may at least partially be covered with the at least one second gasket.
  • the second gasket is designed and arranged such that the second gasket at least partially surrounds the at least one through-hole in the insulation plate.
  • the second gasket may be designed and arranged such that the second gasket at least partially surrounds the first gaskets.
  • the at least one second gasket is a sealing sheet or sealing plate.
  • the second gasket may be a mica plate.
  • the at least one second gasket may be a sealing plate or sealing sheet, said sealing sheet or sealing plate having local through-holes at positions locally corresponding to the through-holes in the insulation plate.
  • the at least one through-hole may have a shape complementary to the shape of the at least one through-hole in the insulation plate (e.g. to a diameter of a through- hole).
  • the through-hole or through-holes in the insulation plate each are surrounded by a first gasket (e.g. by a sealing ring)
  • the through- hole or through-holes in the second gasket may have a shape complementary to the shape of the first gasket (e.g. complementary to an outer diameter of a sealing ring).
  • the at least one second gasket of a sealing repeat unit covers more than 50 %, more preferably more than 60 %, more preferably more than 70%, more preferably more than 80%, of a surface of the insulation plate of said sealing repeat unit, said surface of the insulation plate facing the stack of cell repeat units or facing the end plate.
  • the sealing repeat unit being located adjacent to the end plate and/or the sealing repeat unit being located adjacent to the stack of cell repeat units may each comprise at least one first gasket and at least one second gasket provided on a first side of the respective insulation plate, said first side facing the stack of cell units, and at least one first gasket and at least one second gasket provided on an opposite second side of said insulation plate, said second side facing the end plate.
  • at least one first gasket and/or at least one second gasket are provided on both the top side of the sealing device, said top side facing the stack of cell repeat units, and the opposite bottom side of the sealing device, said bottom side facing the end plate.
  • the insulation plate and the at least one first gasket and/or the at least one second gasket may be bonded to form a single piece, in particular prior to the assembly of the electrochemical cell assembly. That is to say, the insulation plate and the at least one first gasket and/or the at least one second gasket may form a sub-assembly that can be handled as a single piece. This allows for ease of manufacture since the number of individual parts is reduced.
  • the insulation plate and the gaskets may be bonded by gluing.
  • the insulation plate may be formed from an electrically insulating material.
  • the insulation plate is formed from mica.
  • a component "formed from” a specific material may mean that said component is mainly composed (for the most part consists of said material) of said specific material or consists of said specific material.
  • the component may be produced with said specific material being the main source material for constructing it.
  • the at least one first gasket and/or the at least one second gasket preferably are formed from a mechanically compressible material, thus allowing for adjustment to potential irregularities in the surface of the insulation plate.
  • the at least one first gasket and/or the at least one second gasket preferably are formed from an electrically insulating material, thus allowing for electrical insulation of the fluid pathways.
  • the at least one first gasket and/or the at least one second gasket may be formed from a mechanically compressible and electrically insulating material.
  • the at least one first gasket is formed from Thermiculite (registered trademark of the Flexitalic group).
  • the at least one through-hole in the end plate to form a fluid connection for the electrochemical cell assembly.
  • the at least one through-hole in the end plate is arranged in fluid communication with, more preferably coaxially to, the at least one through-hole in the insulation.
  • the end plate and the insulation plate each comprise a plurality of through-holes, wherein each through-hole in the insulation plate is assigned a corresponding through-hole in the end plate, said through-hole in the end plate and said corresponding through-hole in the insulation plate being arranged in fluid communication with, more preferably coaxially to, each other.
  • the end plate may be provided with at least one additional through- hole forming an air or oxidant port.
  • the insulation plate may be designed and arranged such that the insulation plate at least partially surrounds the at least one additional through-hole, allowing for improved sealing of the at least one additional through-hole.
  • the invention also relates to an end plate assembly, preferably for use in an electrochemical cell assembly as discussed above.
  • the features and advantages explained above in connection with the first and second end plate assemblies of the electrochemical cell assembly are also applicable to the end plate assembly according to claim 22.
  • the end plate assembly comprises an end plate and a sealing device, said sealing device being stacked upon said end plate along a stacking direction, said stacking direction preferably equating the stacking direction of the cell repeat units in the electrochemical cell assembly.
  • the sealing device comprises a plurality of sealing repeat units stacked upon one another along the stacking direction.
  • the sealing repeat units each comprise an insulation plate, at least one first gasket, and at least one second gasket.
  • At least one through-hole is provided in said insulation plate to form a fluid pathway along the stacking direction, preferably for supplying fuel to the stack of cell repeat units.
  • the sealing repeat units are stacked upon one another along the stacking direction such that the through-holes of the insulation plates together form a fluid channel along the stacking direction.
  • the at least one first gasket is configured to seal the at least one through-hole against an adjacent sealing repeat unit or against the stack of cell repeat units.
  • the at least one second gasket is a flat (planar) gasket. In each sealing repeat unit, the at least one second gasket is stacked upon the insulation plate along the stacking direction.
  • the invention also relates to a method of manufacturing an electrochemical cell assembly.
  • the method comprises a step of providing a first end plate assembly, a plurality of cell repeat units, and a second end plate assembly, at least one of said first and second end plate assemblies, preferably both end plate assemblies, being constituted as described above. That is to say, the first and/or the second end plate assembly each comprises an end plate and a sealing device as described above.
  • the method further comprises a step of positioning the cell repeat units in a stacked order along a stacking direction between the first end plate assembly and the second end plate assembly to form a stack of cell repeat units.
  • the method further comprises a step of compressing said cell repeat units along the stacking direction by tensioning said first end plate assembly and said second end plate assembly towards each other along the stacking direction.
  • Fig. 1 shows a perspective view of an embodiment of an electrochemical cell assembly
  • Fig. 2a shows a cross-sectional view of the electrochemical cell assembly according to Fig. 1 ; and Fig. 2b shows a detail of Fig. 2a; Fig. 3a shows a perspective section of the electrochemical cell assembly according to Fig. 1 ; and Fig. 3b shows a detail of Fig 3a;
  • Fig. 4 shows a perspective view of an end plate assembly according to a first embodiment
  • Fig. 5 shows an exploded perspective view of the end plate assembly according to Fig. 4;
  • Fig. 6 shows a perspective view of a further design of an end plate assembly
  • Fig. 7 shows an exploded perspective view of the end plate assembly according to Fig. 6;
  • Fig. 8a shows a top view of the end plate assembly according to Fig. 6;
  • Fig. 8b shows a section through the end plate assembly according to Fig. 8a along the section line VI I lb - VI 11 b drawn in Fig.8a; and
  • Fig. 8c shows a detail of Fig. 8b.
  • FIG 1 schematically shows an outline of an exemplary embodiment of an electrochemical cell assembly 10.
  • the electrochemical cell assembly 10 comprises a first end plate assembly 12, a stack 14 of cell repeat units and a second end plate assembly 16 (see also Fig. 2 and Fig. 3).
  • the stack 14 of cell repeat units is held in a compressed state between the first end plate assembly 12 and the second end plate assembly 16.
  • the electrochemical cell assembly 10 may comprise optional compression means known in the art (not shown), such as tension rods, compression springs or bolts.
  • the stack 14 of cell repeat units comprises a plurality of cell repeat units 18, said cell repeat units 18 being stacked upon each other along a stacking direction 20 (see Fig. 2a and 3b).
  • the cell repeat units 18 may be fuel cell units, electrolyser cell units or reversible cell units comprising electrochemically active layers (not shown).
  • each cell repeat unit 18 preferably comprises two or more, in the example four, through-holes 22, said through-holes 22 being in fluid communication with the active layers of the cell unit 18, e.g. via respective fluid channels (not shown).
  • the through-holes 22 form fuel ports 24 of the respective cell repeat unit 18.
  • the stack 14 of cell repeat units 18 further comprises optional sealing gaskets 26 located between the individual cell repeat units 18 and configured to seal the fluid ports 24 against adjacent cell repeat units 18 (see Fig. 2b and 3b).
  • the column of fluid ports 24 and gaskets 26 together form a fluid pathway 28 extending throughout the stack of cell repeat units 18 along the stacking direction 20.
  • the fluid pathway 28 serves as an internal manifold 30 for distributing fuel to the individual cell repeat units 18.
  • first end plate assembly 12 and the second end plate assembly 16 are configured identically.
  • the structure of the end plate assemblies 12, 16 is described by way of example using the first end plate assembly 12.
  • Fig. 4 shows a perspective view of the first end plate assembly 12.
  • the end plate assembly 12 comprises an end plate 32 and a sealing device 34.
  • the sealing device 34 is arranged on a surface 36 of the end plate 32, said surface 36 facing the stack 14 of cell repeat units 18.
  • the sealing device 34 comprises a plurality of sealing repeat units 38 stacked upon one another along the stacking direction 20 (see also Fig. 2b).
  • each sealing repeat unit 38 comprises an insulation plate 40, a plurality of first sealing gaskets 42, and a second (flat) gasket 44 (see e.g. Fig. 5).
  • the insulation plate 40 of each sealing repeat unit 38 comprises a plurality of through-holes 46 extending along the stacking direction 20, thus forming a fluid pathway 48 along the stacking direction 20 (see Fig. 2b and 5).
  • the insulation plate 40 comprises four through-holes 46, said through-holes 46 being arranged coaxially to the fluid ports 24 of the cell repeat units 18 in the electrochemical cell assembly 10 (see e.g. Fig. 3b).
  • the insulation plate 40 is preferably formed from mica.
  • the end plate 32 also comprises a plurality of, in the example four, through-holes 50 extending along the stacking direction 20 and arranged at positions locally corresponding to the positions of the through-holes 46 in the insulation plates 40 (see Fig. 1 and 2a).
  • the through-holes 50 in the end plate 32 preferably are arranged coaxially to the through-holes 46 in the insulation plates 40 and, thus, coaxially to the through-holes 22 in the cell repeat units 18.
  • each through-hole 46 in the insulation plate 40 is assigned a first gasket 42.
  • the first gaskets 42 preferably are sealing rings.
  • the sealing rings 42 are configured to seal the corresponding through-hole 46 against an adjacent insulation plate 40 or against the stack 14 of cell repeat units 18 (see Fig. 3b).
  • the first gaskets 42 preferably are arranged coaxially to the through-holes 46 in the insulation plate 40 (and thus coaxially to the fluid ports 24 and the through-holes 50 in the end plates 32).
  • the first gaskets 42 preferably are formed from an electrically insulating material, e.g. from Thermiculite.
  • each column of through-holes 46 and corresponding first gaskets 42 of the sealing device 34 forms a fluid channel 52 extending throughout the sealing device 34 along the stacking direction 20.
  • the through-holes 50 in the end plates 32, the through-holes 46 (fluid pathways 48) in the insulation plates 40 and the first gaskets 42 of the sealing devices 34 (fluid channels 52), and the fluid ports 24 and gaskets 26 of the stack 14 of cell repeat units 18 (fluid pathway 281 manifold 30) are arranged coaxially to each other, thus forming a chimney 55 extending along the stacking direction 20 and, preferably, throughout the entire thickness of the electrochemical cell assembly 10.
  • the electrochemical cell assembly comprises four of such chimneys 55 (see Fig. 1).
  • Each sealing repeat unit 38 further comprises an areally extending second gasket 44 in the form of a sealing plate or sealing sheet.
  • the first sealing gaskets 42 and the second gasket 44 are arranged on the same side of the insulation plate 40 of a sealing repeat unit 38.
  • the first sealing gaskets 42 and the second gasket 44 are arranged on the side 53 of the insulation plate 40 that is facing the end plate 32.
  • the first sealing gaskets 42 and the second gasket 44 are arranged on the side 54 facing the stack 14 of cell repeat units 18.
  • first and second gaskets 42, 44 are in direct contact with the respective insulation plate 40.
  • the second gasket 44 (sealing plate or sealing sheet 44) comprises a plurality of through-holes 56 at positions locally corresponding to the through-holes 46 in the insulation plate 40.
  • the through-holes 56 have a shape complementary to the outer dimensions of the first gaskets 42 positioned around said through-holes 46.
  • the through-holes 56 are circularshaped having a diameter essentially corresponding to the outer diameter of the first gaskets 42 (see Fig. 5).
  • the first gaskets 42 and the second gasket 44 of a respective sealing repeat unit 38 preferably have the same thickness along the stacking direction 20.
  • a respective surface 58 of the first gaskets 42 of a sealing repeat unit 38, said surface 58 preferably facing away from the insulation plate 40 is positioned flush with a surface 60 of the second gasket 44 of said sealing repeat unit 38, said surface 60 preferably facing away from the insulation plate 40 (see e.g. Fig. 2b and 8c).
  • Figures 6 to 8c show a further example of the end plate assembly 12, 16, essentially corresponding to the end plate assembly according to Fig. 4 and 5, but differing in the shape of the second gasket 44.
  • the second gasket 44 does not comprise circular through-holes 56 as described in connection with Fig. 5, but has a central rectangular portion 62 and two tongue portions 64, said tongue portions 64 extending between adjacent through-holes 46.
  • the central portion 62 and the tongue portions 64 are integrally formed.
  • the sealing device 34 may, optionally, comprise additional gaskets 42, 44.
  • additional first gaskets 42 and an additional second gasket 44 are arranged on a bottom side 53 of the insulation plate 40 of the lower most sealing repeat unit 38 (that is, the additional gaskets 42, 44 are located between the end plate 32 and the insulation plate 40 of the lower most sealing unit 38).
  • the additional gaskets 42, 44 are located between the end plate 32 and the insulation plate 40 of the lower most sealing unit 38.

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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)
  • Sealing Battery Cases Or Jackets (AREA)
  • Fuel Cell (AREA)

Abstract

L'invention concerne un ensemble cellule électrochimique (10) comprenant un premier ensemble plaque d'extrémité (12), une pile (14) d'unités de répétition de cellules (18), et un second ensemble plaque d'extrémité (16), ledit premier et/ou ledit second ensemble plaque d'extrémité comprenant chacun une plaque d'extrémité (32), un dispositif d'étanchéité (34) situé entre ladite plaque d'extrémité (32) et ladite pile (14) d'unités de répétition de cellules (18), le dispositif d'étanchéité (34) comprenant une pluralité d'unités de répétition d'étanchéité empilées les unes sur les autres le long d'une direction d'empilement (20), lesdites unités de répétition d'étanchéité comprenant chacune une plaque d'isolation (40), au moins un premier joint d'étanchéité (42) et au moins un second joint d'étanchéité (44), le ou les seconds joints d'étanchéité étant un joint d'étanchéité plat et étant empilés sur la plaque d'isolation le long de la direction d'empilement. L'invention concerne également un ensemble plaque d'extrémité et un procédé de fabrication d'un ensemble cellule électrochimique.
PCT/EP2022/058877 2022-04-04 2022-04-04 Ensemble cellule électrochimique avec ensemble plaque d'étanchéité WO2023193878A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/EP2022/058877 WO2023193878A1 (fr) 2022-04-04 2022-04-04 Ensemble cellule électrochimique avec ensemble plaque d'étanchéité
TW112112919A TW202408060A (zh) 2022-04-04 2023-04-06 具有密封板總成之電化學電池總成

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2022/058877 WO2023193878A1 (fr) 2022-04-04 2022-04-04 Ensemble cellule électrochimique avec ensemble plaque d'étanchéité

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050186462A1 (en) * 2004-01-12 2005-08-25 Raymond Belanger PEM fuel cell stack with floating current collector plates
US20200161690A1 (en) * 2017-06-26 2020-05-21 Ceres Intellectual Property Company Limited Fuel cell stack assembly
WO2022043085A1 (fr) * 2020-08-26 2022-03-03 Ceres Intellectual Property Company Limited Connexion d'alimentation pour empilement de cellules électrochimiques

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050186462A1 (en) * 2004-01-12 2005-08-25 Raymond Belanger PEM fuel cell stack with floating current collector plates
US20200161690A1 (en) * 2017-06-26 2020-05-21 Ceres Intellectual Property Company Limited Fuel cell stack assembly
WO2022043085A1 (fr) * 2020-08-26 2022-03-03 Ceres Intellectual Property Company Limited Connexion d'alimentation pour empilement de cellules électrochimiques

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