Compression force calculation of redox flow battery

doi:10.19799/j.cnki.2095-4239.2021.0378

Abstract

Abstract:

The application scenario for redox flow battery (RFB) systems is large-scale energy storage, which aims at integrating renewable energy into national grids. RFBs are also used as a backup power source to provide energy on an hourly basis. The engineering advantages of this technical route are a flexible arrangement of system-rated power and storage capacity, as well as an effective method of improving electricity quality and transmission stability. Hook's Law was used to establish a force analysis model to determine the stack compression load. Since the application of this numerical simulation, a decrement logarithmic trendline of the model stiffness with an increased number of cells was discovered. During the battery assembly process, an increasing quadratic curve demonstrated self-weight-induced height decline. This mathematical approach was validated due to computational outputs of a full-scale stack consisting of 100 cells matched with recorded values in real assembly. Meanwhile, this battery stack passed tests evaluating its sealing properties.

Key words: energy storage, redox flow batteries, compression force, seal, numerical simulation

CLC Number:

TM 912

Ang LI, Xiaomeng LI, Lin YANG, Han WANG, Junfan XIANG, Yuhan LIU. Compression force calculation of redox flow battery[J]. Energy Storage Science and Technology, 2022, 11(2): 609-614.

Figures/Tables 8

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References 6

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