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1. EP3565046 - REDOX FLOW BATTERY SYSTEM AND REDOX FLOW BATTERY OPERATION METHOD

Office
European Patent Office
Application Number 17885714
Application Date 25.12.2017
Publication Number 3565046
Publication Date 06.11.2019
Publication Kind A4
IPC
H01M 8/18
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
18Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells
H01M 8/04
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
04Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
H01M 8/04186
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
04Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
04082Arrangements for control of reactant parameters, e.g. pressure or concentration
04186of liquid-charged or electrolyte-charged reactants
CPC
H01M 8/188
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
18Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells
184Regeneration by electrochemical means
188by recharging of redox couples containing fluids; Redox flow type batteries
Y02E 60/10
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
60Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
10Energy storage using batteries
Y02E 60/50
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
60Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
30Hydrogen technology
50Fuel cells
H01M 8/04186
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
8Fuel cells; Manufacture thereof
04Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
04082Arrangements for control of reactant parameters, e.g. pressure or concentration
04186of liquid-charged or electrolyte-charged reactants
H01M 10/0585
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
058Construction or manufacture
0585of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
H01M 10/0587
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
058Construction or manufacture
0587of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
Applicants SHOWA DENKO KK
Inventors TOMITA MIYUKI
Designated States
Priority Data 2016256178 28.12.2016 JP
Title
(DE) REDOX-FLOW-BATTERIESYSTEM UND BETRIEBSVERFAHREN FÜR REDOX-FLOW-BATTERIE
(EN) REDOX FLOW BATTERY SYSTEM AND REDOX FLOW BATTERY OPERATION METHOD
(FR) SYSTÈME DE BATTERIE RÉDOX ET PROCÉDÉ DE FONCTIONNEMENT DE SYSTÈME DE BATTERIE RÉDOX
Abstract
(EN)
Provided is a redox flow battery system capable of, even when a high concentration vanadium electrolyte is used, achieving high charge/discharge efficiency and suppression of corrosion with a simple configuration by dissolving and removing a precipitate and by adjusting the balance of the electrolyte. The redox flow battery system is provided with: a positive-electrode electrolyte tank 11 in which a positive-electrode electrolyte containing tetravalent and/or pentavalent vanadium is stored; a positive-electrode electrolyte outgoing pipe 13 and positive-electrode electrolyte return pipe 14 for circulating the positive-electrode electrolyte between the positive-electrode electrolyte tank 11 and a battery cell 2; a negative-electrode electrolyte tank 21 in which a negative-electrode electrolyte containing divalent and/or trivalent vanadium is stored; a negative-electrode electrolyte outgoing pipe 23 and a negative-electrode electrolyte return pipe 24 for circulating the negative-electrode electrolyte between the negative-electrode electrolyte tank 21 and the battery cell 2; a maintenance tank 40 in which a cleaning liquid containing sulfuric acid is stored; and a cleaning liquid outgoing pipe 41 and a cleaning liquid return pipe 42 for circulating the cleaning liquid between the maintenance tank 40 and the battery cell 2.

(FR)
La présente invention concerne un système de batterie rédox capable, même lorsqu’une solution électrolytique de vanadium à concentration élevée est utilisée, d’obtenir une efficacité de charge/décharge élevée et une suppression de la corrosion avec une configuration simple par dissolution et élimination d’un précipité et par ajustement de l’équilibre de la solution électrolytique. Le système de batterie rédox comprend : un réservoir de solution électrolytique d’électrode positive 11 dans lequel une solution électrolytique d’électrode positive contenant du vanadium tétravalent et/ou pentavalent est stockée ; un tuyau de sortie de solution électrolytique d’électrode positive 13 et un tuyau de retour de solution électrolytique d’électrode positive 14 pour faire circuler la solution électrolytique d’électrode positive entre le réservoir de solution électrolytique d’électrode positive 11 et une cellule de batterie 2 ; un réservoir de solution électrolytique d’électrode négative 21 dans lequel une solution électrolytique d’électrode négative contenant du vanadium divalent et/ou trivalent est stockée ; un tuyau de sortie de solution électrolytique d’électrode négative 23 et un tuyau de retour de solution électrolytique d’électrode négative 24 pour faire circuler la solution électrolytique d’électrode négative entre le réservoir de solution électrolytique d’électrode négative 21 et la cellule de batterie 2 ; un réservoir de maintien 40 dans lequel un liquide de nettoyage contenant de l’acide sulfurique est stocké ; et un tuyau de sortie de liquide de nettoyage 41 et un tuyau de retour de liquide de nettoyage 42 pour faire circuler le liquide de nettoyage entre le réservoir de maintenance 40 et l’élément de batterie 2.