Open Access

ARTICLE

Analysis of the Thermal Behavior of a Lithium Cell Undergoing Thermal Runaway

Qifei Du¹, Zhigang Fang^2,3,*
1 National Demonstration Center for Experimental Engineering Training Education, Tiangong University, Tianjin, 300387, China
2 School of Automotive Engineering, Wuhan University of Technology, Wuhan, China
3 Hubei Key Laboratory of Advanced Technology of Automotive Components, Wuhan University of Technology, Wuhan, China
* Corresponding Author: Zhigang Fang. Email:
(This article belongs to this Special Issue: EFD and Heat Transfer III)

Fluid Dynamics & Materials Processing 2021, 17(5), 887-898. https://doi.org/10.32604/fdmp.2021.016265

Received 21 February 2021; Accepted 13 April 2021; Issue published 05 July 2021

Abstract

This study examines the thermal runaway of a lithium ion battery caused by poor heat dissipation performances. The heat transfer process is analyzed on the basis of standard theoretical concepts. Water mist additives are considered as a tool to suppress the thermal runaway process. The ensuing behaviour of the battery in terms of surface temperature and heat generation is analyzed for different charge and discharge rates. It is found that when the remaining charge is 100%, the heat generation rate of the battery is the lowest, and the surface temperature with a 2C charge rate is higher than that obtained for a 0.5C charge rate. The experimental results show that when the additive concentration is 20% NaCl, its ability to inhibit the thermal runaway is the strongest.

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Keywords

Lithium ion battery; thermal runaway; discharge rate; heat generating rate; water mist

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