EP 3516722 A1 20190731 - DETERMINING THE STATE OF CHARGE OF AN ALL-VANADIUM REDOX FLOW BATTERY USING UV/VIS MEASUREMENT
Title (en)
DETERMINING THE STATE OF CHARGE OF AN ALL-VANADIUM REDOX FLOW BATTERY USING UV/VIS MEASUREMENT
Title (de)
BESTIMMUNG DES LADUNGSZUSTANDES EINER ALL-VANADIUM REDOX-FLOW BATTERIE MITTELS UV/VIS-MESSUNG
Title (fr)
DÉTERMINATION DE L'ÉTAT DE CHARGE D'UNE BATTERIE REDOX VANADIUM À L'AIDE D'UNE MESURE UV/VIS
Publication
Application
Priority
- DE 102016117604 A 20160919
- EP 2017072547 W 20170908
Abstract (en)
[origin: WO2018050547A1] The invention relates to a method for determining the state of charge of a vanadium redox flow cell, in which the concentrations of V4+ and V5+ in the positive electrolyte are determined indirectly by mixing the positive and the negative electrolyte together in specific proportions in order to reduce the V5+ contained in the positive electrolyte. CT complexes of V4+/V5+, the concentration of which cannot be determined directly due to strong UV/Vis absorption, are thus avoided. The method therefore makes it possible to determine the concentrations of the negative and the positive electrolyte by means of UV/Vis absorptions, which allows a simple monitoring of the state of charge of a vanadium redox flow battery. The invention further relates to a method for operating a vanadium redox flow battery and to devices suitable for implementing said method.
IPC 8 full level
H01M 8/04186 (2016.01); H01M 8/0444 (2016.01); H01M 8/18 (2006.01)
CPC (source: EP KR US)
G01N 21/31 (2013.01 - EP KR US); G01N 21/94 (2013.01 - KR); H01M 8/04186 (2013.01 - EP KR US); H01M 8/04201 (2013.01 - US); H01M 8/04477 (2013.01 - EP KR US); H01M 8/188 (2013.01 - EP KR US); G01N 21/94 (2013.01 - EP US); G01N 2021/3129 (2013.01 - EP KR US); Y02E 60/50 (2013.01 - EP KR US)
Citation (search report)
See references of WO 2018050547A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2018050547 A1 20180322; WO 2018050547 A8 20180607; CA 3036798 A1 20180322; CN 109716572 A 20190503; DE 102016117604 A1 20180322; EP 3516722 A1 20190731; JP 2019530159 A 20191017; KR 20190055176 A 20190522; US 2019267648 A1 20190829
DOCDB simple family (application)
EP 2017072547 W 20170908; CA 3036798 A 20170908; CN 201780057280 A 20170908; DE 102016117604 A 20160919; EP 17765412 A 20170908; JP 2019514727 A 20170908; KR 20197011241 A 20170908; US 201716333292 A 20170908