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1. WO2020089042 - BIPOLAR PLATE FOR A HALF-CELL OF AN ELECTROCHEMICAL APPARATUS

Publication Number WO/2020/089042
Publication Date 07.05.2020
International Application No. PCT/EP2019/079080
International Filing Date 24.10.2019
IPC
H01M 8/0245 2016.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
02Details
0202Collectors; Separators, e.g. bipolar separators; Interconnectors
023Porous and characterised by the material
0241Composites
0245in the form of layered or coated products
H01M 8/0247 2016.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
02Details
0202Collectors; Separators, e.g. bipolar separators; Interconnectors
0247characterised by the form
H01M 8/0265 2016.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
02Details
0202Collectors; Separators, e.g. bipolar separators; Interconnectors
0258characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
0265the reactant or coolant channels having varying cross sections
H01M 8/0232 2016.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
02Details
0202Collectors; Separators, e.g. bipolar separators; Interconnectors
023Porous and characterised by the material
0232Metals or alloys
H01M 8/1018 2016.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
10Fuel cells with solid electrolytes
1016characterised by the electrolyte material
1018Polymeric electrolyte materials
CPC
H01M 2008/1095
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
10Fuel cells with solid electrolytes
1095Fuel cells with polymeric electrolytes
H01M 8/0232
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
02Details
0202Collectors; Separators, e.g. bipolar separators; Interconnectors
023Porous and characterised by the material
0232Metals or alloys
H01M 8/0245
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
02Details
0202Collectors; Separators, e.g. bipolar separators; Interconnectors
023Porous and characterised by the material
0241Composites
0245in the form of layered or coated products
H01M 8/0247
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
02Details
0202Collectors; Separators, e.g. bipolar separators; Interconnectors
0247characterised by the form
H01M 8/0265
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
02Details
0202Collectors; Separators, e.g. bipolar separators; Interconnectors
0258characterised by the configuration of channels, e.g. by the flow field of the reactant or coolant
0265the reactant or coolant channels having varying cross sections
Applicants
  • ROBERT BOSCH GMBH [DE]/[DE]
Inventors
  • HOLZ, Dieter
  • FISCHER, Arne Stephen
Priority Data
10 2018 218 573.530.10.2018DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) BIPOLARPLATTE FÜR EINE HALBZELLE EINER ELEKTROCHEMISCHEN VORRICHTUNG
(EN) BIPOLAR PLATE FOR A HALF-CELL OF AN ELECTROCHEMICAL APPARATUS
(FR) PLAQUE BIPOLAIRE POUR UNE DEMI-CELLULE D’UN DISPOSITIF ÉLECTROCHIMIQUE
Abstract
(DE)
Bipolarplatte (1) für eine Halbzelle einer elektrochemischen Vorrichtung, aufweisend: eine erste elektrisch leitfähige Fluidverteilungsschicht (2) zum Transport eines ersten Fluidstroms (5a), die einseitig offene Kanalstrukturen mit zumindest abschnittsweise freien Querschnitten aufweist, und eine zweite elektrisch leitfähige Fluidverteilungsschicht (7) zum Transport eines zweiten Fluidstroms (5b), die Leitelemente (3a, 3b) aufweist, wobei die offenen Seiten der Kanalstrukturen an einer ersten Seite der zweiten Fluidverteilungsschicht (7) angeordnet ist; die Leitelemente (3a, 3b) dergestalt innerhalb der zweiten Fluidverteilungsschicht (7) angeordnet sind, dass ein Fluidaustausch (6a, 6b) der beiden Fluidströmen (5a, 5b) mit einer Gasdiffusionslage (4), die an eine zweite Seite der zweiten Fluidverteilungsschicht (7) angrenzt, gefördert wird; und wobei Querschnitte der Leitelemente (3a, 3b) in Richtung des ersten Fluidstroms (5a), zumindest abschnittsweise über die Länge der Kanalstrukturen hinweg, größer werden.
(EN)
The invention relates to a bipolar plate (1) for a half-cell of an electrochemical apparatus, comprising a first electrically conductive fluid distribution layer (2) for transport of a first fluid stream (5a), which layer has channel structures open on one side having free cross-sections at least in some portions, and a second electrically conductive fluid distribution layer (7) for transport of a second fluid stream (5b), which layer has guide elements (3a, 3b), the open sides of the channel structures being arranged on a first side of the second fluid distribution layer (7). The guide elements (3a, 3b) are arranged inside the second fluid distribution layer (7) in such a way as to promote a fluid exchange (6a, 6b) of the two fluid streams (5a, 5b) with a gas diffusion layer (4), which borders a second side of the second fluid distribution layer (7). Cross-sections of the guide elements (3a, 3b) are greater in the direction of the first fluid stream (5a), at least in portions beyond the length of the channel structures.
(FR)
La présente invention concerne une plaque bipolaire (1) pour une demi-cellule d’un dispositif électrochimique. Ledit dispositif comprend : une première couche de distribution de fluide électroconductrice (2) pour le transport d’un premier écoulement de fluide (5a), qui comprend des structures de conduites ouvertes sur un côté ayant au moins par secteurs des coupes transversales libres ; et une seconde couche de distribution de fluide électroconductrice (7) pour le transport d’un second écoulement de fluide (5b), qui comprend des éléments de guidage (3a, 3b), les côtés ouverts des structures de conduites étant disposés sur un premier côté de la seconde couche de distribution de fluide (7). Les éléments de guidage (3a, 3b) sont disposés à l’intérieur de la seconde couche de distribution de fluide (7) de manière à favoriser un échange de fluide (6a, 6b) des deux écoulements de fluide (5a, 5b) avec un site de diffusion de gaz (4) qui est contigu à un second côté de la seconde couche de distribution de fluide (7). Des coupes transversales des éléments de guidage (3a, 3b) deviennent plus grandes en direction du premier écoulement de fluide (5a), au moins par secteurs sur la longueur des structures de conduites.
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