计量学报2026，Vol.47Issue(1)：111-121,11.DOI:10.3969/j.issn.1000-1158.2026.01.14
软包锂电池在挤压工况下热失控的实验研究
Experimental Study on Thermal Runaway of Soft-pack Lithium Battery Under Extrusion Condition
摘要
Abstract
The short circuit failure caused by local squeeze of soft-pack batteries is a typical operating condition in a car crash,and it is also the most dangerous loading form.The experiment took a domestic commercial soft-pack battery as the research object,and conducted an extrusion experiment under the mechanical abuse experimental platform.By observing and recording the parameters of stress,temperature and voltage during the experiment,the characteristics of thermal runaway occur in the battery are analyzed.The results show that in the extrusion experiment,the process of thermal runaway in the battery can be divided into different stages at different angles,and each stage has its own characteristics;the state of charge has little impact on the mechanics,thermal and electrical aspects of the soft-pack battery under the extrusion conditions;with the increase of the loading speed,the battery limit load becomes smaller,the battery temperature changes faster,and the voltage short-circuit time becomes shorter;with the change of the loading angle of the head,the limit load and temperature both increase with the increase of the extrusion angle,and the battery short-circuit time is not much different;the larger the radius of the cylindrical head,the greater the battery limit load,and the temperature and the short-circuit time are not correlated with the size of the head.关键词
电学计量/软包锂电池/荷电状态/机械滥用/挤压测试/热失控Key words
electrical measurement/soft-pack lithium battery/state of charge/mechanical abuse/extrusion test/thermal runaway分类
通用工业技术引用本文复制引用
李杰,赵鸿祥,程乐,汤元会,何永全..软包锂电池在挤压工况下热失控的实验研究[J].计量学报,2026,47(1):111-121,11.基金项目
国家市场监督管理总局科技计划(2021MK104) （2021MK104）
陕西省重点研发计划(2022GY-178) （2022GY-178）
