Pseudo-passive heat removal system for thermal safety of power battery

被引：0
|
作者：
Deng J. [1 ]
Li Z. [1 ]
Chen J. [1 ]
机构：
[1] School of Electric Power, South China University of Technology, Guangdong, Guangzhou
来源：
Huagong Xuebao/CIESC Journal | 2023年 / 74卷 / 11期
关键词：
dynamics; heat removed; power battery; pseudo-passive; thermal safety; thermodynamic process; thermodynamics;
D O I：
10.11949/0438-1157.20230786
中图分类号：
学科分类号：
摘要：
The development of power battery thermal runaway propagation passive suppression technology is of great significance to solve the spontaneous combustion accident of electric vehicles in the static state. Existing passive technologies are based on thermal barrier mechanisms, but the resulting large thermal resistance will seriously affect the daily battery thermal management performance. This paper proposes a pseudo-passive power battery heat removal system based on pump drive cooling and thermoelectric conversion, which converts part of the heat generated by the battery system into electrical energy to achieve pseudo-passive heat removal. On this basis, it is combined with a thermal barrier to reduce the thermal resistance required to block the spread of thermal runaway. This article develops a test prototype, conducts experiments to analyze the heat removal process under different battery system heating power conditions, and explores the impact of heating power distribution. When the heating power is reduced by 33%, the steady-state values of dissipation in the cooling process of the pump drive, heat absorption in the thermoelectric conversion process, and electric energy generation are reduced by 30%, 27%, and 15%, respectively. The research in this paper will help to significantly improve the safety performance of electric vehicles. © 2023 Chemical Industry Press. All rights reserved.
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页码：4679 / 4687
页数：8
相关论文
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