An Equivalent Circuit Model for Redox Flow Battery Stack

Authors

Dong-jiang YOU, The 718th Research Institute of CSIC, 056027, Handan, China;Follow
Hua-min ZHANG, Dalian Institute of Chemical Physics, CAS, 116023, Dalian, China

Corresponding Author

Dong-jiang YOU(youdj718@163.com)

Abstract

This paper introduces an equivalent circuit model for a redox flow battery stack. The model combines the electrochemical reaction of the battery cell and the shunt current of the battery stack. An all-vanadium redox flow battery stack of 1kW rated output power is tested through transient response and self-discharge experiments. All the parameters used for the modeling are obtained. Calculated shunt current and distribution of calculated battery voltage are shown in the results. It is concluded that the impedance of the battery stack can be obtained by the experimental results of the transient response and self-discharge measurements. The capacity lose of about 60% for the battery system is caused by the shunt current.

Graphical Abstract

Keywords

equivalent circuit model, transient response, shunt current

DOI Link

https://doi.org/10.13208/j.electrochem.130417

Publication Date

2014-04-28

Online Available Date

2014-04-17

Revised Date

2013-07-08

Received Date

2013-04-17

Recommended Citation

Dong-jiang YOU, Hua-min ZHANG. An Equivalent Circuit Model for Redox Flow Battery Stack[J]. Journal of Electrochemistry, 2014 , 20(2): 130417.
DOI: 10.13208/j.electrochem.130417
Available at: https://jelectrochem.xmu.edu.cn/journal/vol20/iss2/17