青岛大学学报（自然科学版）2025，Vol.38Issue(1)：67-72,78,7.DOI:10.3969/j.issn.1006-1037.2025.01.10
21700型NCA锂离子电池过放电循环老化后的热失控特性分析
Analysis of Thermal Runaway Characteristicsin 21700 NCA Lithium-ion Batteries after Over-discharge Cycling Aging
摘要
Abstract
To reveal and quantify the impact of over-discharge cycling on the thermal sta-bility and thermal safety risks of lithium-ion batteries,adiabatic thermal runaway experi-ments were conducted on 21700-type NCA lithium-ion batteries aged through over-dis-charge cycling.The variations in characteristic thermal runaway temperatures,including the onset temperature of self-heating,the triggering temperature of thermal runaway,the maximum thermal runaway temperature,and others,as well as the changes in the kinetic parameters of the self-heating phase,were analyzed.The results showed that the changes in thermal runaway characteristics reflected a decline in the thermal stability of the batter-ies,and the reduction in activation energy indicated an increased thermal safety risk for batteries subjected to over-discharge cycling.关键词
锂离子电池/过放电循环/热失控/动力学参数Key words
lithium-ion batteries/over-discharge cycling/thermal runaway/kinetic param-eters分类
信息技术与安全科学引用本文复制引用
王敬豪,李希超,贺群,戴作强,郑莉莉..21700型NCA锂离子电池过放电循环老化后的热失控特性分析[J].青岛大学学报（自然科学版）,2025,38(1):67-72,78,7.基金项目
山东省重点研发计划(科技型中小企业创新能力提升工程)(批准号:2024TSGC0190)资助. （科技型中小企业创新能力提升工程）
