Energy Storage Science and Technology ›› 2021, Vol. 10 ›› Issue (6): 2363-2372.doi: 10.19799/j.cnki.2095-4239.2021.0207

• Energy Storage Test: Methods and Evaluation • Previous Articles     Next Articles

Simulation model advances in vanadium redox flow battery energy storage and monitoring method for state of charge

Kehuan XIE1(), Chuanchang LI1(), Jian CHEN1, Longhai YU2,3, zhun TAN2, Weihai QIN2   

  1. 1.School of Energy and Power Engineering, Changsha University of Science and Technology, Changsha 410114, Hunan, China
    2.Hunan Vanadium Valley New Energy Technology Co. Ltd. , Changsha 410116, Hunan, China
    3.Big Power Electrical Technology Xiangyang Co. Ltd. , Xiangyang 441057, Hubei, China
  • Received:2021-05-13 Revised:2021-09-04 Online:2021-11-05 Published:2021-11-03
  • Contact: Chuanchang LI E-mail:kehuanxie@126.com;chuanchangli@126.com

Abstract:

As an electrochemical energy storage technology, the all-vanadium redox flow battery (VRB) is the most promising large-scale energy storage technology with long life and low cost due to its high safety and flexible layout. This article summarizes the simulation model of all-VRB energy storage in two types of models, namely, circuit and electrochemical. Circuit models mainly comprise fixed circuit elements that simulate battery loops in series and parallel, while electrochemical mathematical models describe the internal battery parameters. At the same time, this article summarizes commonly used state of charge (SOC) monitoring methods for all-vanadium redox flow batteries, including the basic principles and usage methods of the open-circuit voltage method, current integration method, and Kalman filter algorithm. The SOC monitoring method supplements simulation models to build a complete all-VRB energy storage system.

Key words: vanadium redox flow battery, simulation model, SOC monitoring

CLC Number: