不同体系中18650型锂离子电池热失控传播过程研究  

Thermal runaway extension of 18650 Lithiumion battery under different systems

作　　者：邓志彬 韩旭[1] 刘全义[1] 贺元骅[1] DENG Zhi-bin;HAN Xu;LIU Quan-yi;HE Yuan-hua(Civil Aviation Flight University of China, Sichuan Guanghan 618307, China)

机构地区：[1]中国民用航空飞行学院,四川广汉618307

出　　处：《消防科学与技术》2018年第2期246-249,共4页Fire Science and Technology

基　　金：中国民用航空局科技创新引导重大专项项目"高高原航空燃油火灾机理及灭火有效性研究"(MHRD20130103);中国民用航空飞行学院科研基金面上项目"航空运输条件下锂电池热失控规律研究"(BJ2016-07)

摘　　要：使用自主设计搭建的锂离子电池热失控实验平台,在敞开体系与半封闭体系条件下对18650型锂离子电池开展热失控及传播实验,研究荷电量(SOC)为50%的锂离子电池热失控连锁反应的特征。对热失控发生时间、温度变化趋势、峰值温度、热失控传播特性等进行记录分析。结果表明:敞开体系中单个锂离子电池在173℃时开始发生热失控,最高温度达到689℃;不同体系热失控传播实验中,敞开体系未发生热失控传播,金属包装的半封闭体系发生热失控传播。Experimental study on the thermal runaway and its extension of18650Lithium-ion battery under open system and semiclosed system was carried out using the experiment platform designed by ourselves.The characteristics of chain reaction of Lithium-ion battery which SOC is50%were studied.The occurrence time,temperature trends,peak temperature,extension characteristics of thermal runaway were recorded and analyzed.The results showed that single Lithium-ion battery thermal runaway occurs at173℃in open system,and the maximum temperature reached689℃.In the thermal runaway extension experiments under different system conditions,thermal runaway extension had not happened in open system,while happened in semi-closed system of metal packaging.

关 键 词：锂离子电池 敞开体系 半封闭体系 热失控 热失控传播 

分 类 号：X924.4[环境科学与工程—安全科学] TM911[电气工程—电力电子与电力传动]