安全、健康和环境2024，Vol.24Issue(5)：7-12,6.DOI:10.3969/j.issn.1672-7932.2024.05.002
软包型高能量密度三元锂离子电池热失控特性研究
Study on Thermal Runaway Characteristics of Soft-packing High Energy Density Ternary Li-ion Battery
摘要
Abstract
In order to fully understand the conditions and consequences of thermal runaway of soft-packing high energy density ternary lithium ion battery,the runaway reaction characteristics of different types of Ni-Co-Mn ternary soft-packing lithium ion battery were investigated by battery adiabatic calorimeter.The variation features of thermal safety parameters such as initial heat release temperature of thermal runaway,trigger temperature of thermal runaway,ad-iabatic temperature rise and time to reach the maxi-mum reaction rate of batteries were obtained.The conditions and mechanism of thermal runaway in soft-packing lithium-ion batteries with high energy density were discussed,and the safety criterion to character-ize the dangerous characteristics of thermal runaway was proposed.High energy density soft-packing lithi-um-ion batteries can occur at a minimum of about 50 ℃ self-reaction heat release,120～180℃ irre-versible thermal runaway,the process produced a large amount of gas leading to bulge,rupture,the maximum temperature after the combustion of battery materials can reach 600 ℃.The key calorimetric pa-rameters and laws of the battery can provide basic da-ta and theoretical basis for the risk assessment,moni-toring and early warning and safety protection of the power battery and energy storage system.关键词
锂离子电池/热失控/火灾/爆炸/安全判据/绝热量热Key words
lithium-ion batteries/thermal runaway/fire/explosion/safety criteria/adiabatic heat分类
信息技术与安全科学引用本文复制引用
刘静如..软包型高能量密度三元锂离子电池热失控特性研究[J].安全、健康和环境,2024,24(5):7-12,6.基金项目
中国石化科技项目(218025-8),动力锂离子电池安全性评价. （218025-8）
