摘要
为深入揭示民航运输过程中锂离子电池热失控引发燃爆的致灾机理,基于受限空间压力容器设计并搭建了锂离子电池燃爆多参量实验系统,在96和61kPa的不同初始压力条件下,电加热触发荷电量(state of charge,SOC)为100%的18650型锂离子电池发生燃爆,记录与分析燃爆压力、燃爆响应温度及燃爆释放气体浓度等参数变化规律。结果表明:初始环境压力与电池数量对锂离子电池燃爆灾害规律具有关键影响,96kPa条件下,锂离子电池燃爆剧烈,释放能量高;61kPa条件下,锂离子电池燃爆时间较长,燃爆响应温度较高,且初始低压条件下锂离子电池燃爆需O2量高,产生更多CO2与CO。
In order to further investigate the mechanism of the fire and explosion hazards of lithium-ion batteries caused by thermal runaway during civil aviation transportation,this paper presents the design and construction of a confined-vessel-based multi-parameter experimental platform for lithium-ion battery explosion.Under the different initial pressures of 96 and 61 kPa,the electric heating technology was utilized to trigger the explosion of the 18650 lithium-ion batteries with 100%SOC.The typical parameters such as explosion pressure,response temperature,gas components and concentration,were measured and analyzed.The results show that the initial environmental pressure and the number of batteries have a key effect on the fire and explosion disaster of lithium-ion batteries.Under 96 kPa,the explosion was more intensive and more heat was released.Under 61 kPa,the explosion time was longer and the response temperature was higher.Besides,more oxygen was required for the explosion of lithium-ion batteries and as a result more carbon dioxide and carbon monoxide concentration accumulated.
作者
刘全义
伊笑莹
韩旭
李泽锟
王东辉
LIU Quanyi;YI Xiaoying;HAN Xu;LI Zekun;WANG Donghui(College of Civil Aviation Safety Engineering,Civil Aviation Flight University of China,Guanghan,Sichuan 618307,China)
出处
《山东科技大学学报（自然科学版）》
CAS
北大核心
2020年第6期56-62,共7页
Journal of Shandong University of Science and Technology(Natural Science)
基金
国家重点研发计划项目(2018YFC0809500)
国家自然科学基金项目(U1633203,U1733126)
四川省科技计划项目(2018GZYZF0069)
中国民航飞行学院基金项目(J2018-36)
灭火救援技术公安部重点实验室开放课题(KF201807)。
关键词
民航安全
初始环境压力
锂离子电池
响应温度
燃爆压力
civil aviation safety
initial environmental pressure
lithium-ion battery
response temperature
explosion pressure
