船电技术2025，Vol.45Issue(5)：7-13,7.
低温循环老化锂离子电池热失控特性研究
Analysis of thermal runaway characteristics of lithium ion battery in low temperature cycle aging
李冠华 1乔光毅 1李苏琪 1仲淳 1高语声 1闫伟1
作者信息
摘要
Abstract
This paper explored the thermal runaway characteristics of lithium-ion batteries after low-temperature cycling aging,so as to lay the foundation for further exploration of their related thermal runaway mechanisms.The experiment was carried out to conduct cyclic aging treatment on lithium batteries at different temperatures in a constant temperature chamber,and then subject the resulting aged lithium batteries to heating thermal runaway testing.Finally,the starting time,starting temperature,and maximum temperature of thermal runaway,as well as the voltage changes and percentage of mass loss before and after the thermal runaway process were measured.After comparing the thermal runaway characteristics of lithium-ion batteries under different experimental conditions,it was found that batteries with the same degree of cyclic aging under different low-temperature environments have a lower ambient temperature with a later onset time of thermal runaway and a higher maximum temperature of thermal runaway with a higher onset temperature of thermal runaway,.However,compared with batteries with the same degree of aging at room temperature,the thermal runaway time is generally earlier,and the onset temperature and maximum temperature of thermal runaway are generally lower.This paper experimentally analyzed the thermal runaway characteristics of batteries under different states of charge,and found that the lower the load,the later the onset time of thermal runaway,the higher the onset temperature of thermal runaway,and the lower the maximum temperature of thermal runaway.The research results contribute to the development of the application prospects and improvement of safety performance of lithium-ion batteries at low temperatures.关键词
锂离子电池/低温/循环老化/热失控/荷电状态Key words
lithium-ion batteries/low temperature/cyclic aging/thermal runaway/state of charge分类
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李冠华,乔光毅,李苏琪,仲淳,高语声,闫伟..低温循环老化锂离子电池热失控特性研究[J].船电技术,2025,45(5):7-13,7.
