航空运输环境中锂离子电池热失控研究  

Research on Thermal Runaway of Lithium-ion Battery in Aviation Transportation Environment

作　　者：李明浩 黎桂树 谢松 LI Minghao;LI Guishu;XIE Song(College of Civil Aviation Safety Engineering,Civil Aviation Flight University of China,Guanghan 618307,China)

机构地区：[1]中国民用航空飞行学院民航安全工程学院,广汉618307

出　　处：《电源学报》2024年第6期253-259,268,共8页Journal of Power Supply

基　　金：国家重点研发计划资助项目(2018YFC0809500);四川省科技计划资助项目(2021YFSY0001);民机火灾科学与安全工程四川省重点实验室自主资助项目(MZ2022JB02);中国民用航空飞行学院面上资助项目(J2021-098)。

摘　　要：针对民用航空运输过程中的锂离子电池热失控事故,通过模拟民机飞行过程中的低温低压环境,使用外部热源接触加热的方式触发锂离子电池热失控,探究变压变温环境下锂离子电池热失控特性。实验结果表明:锂离子电池热失控时间随飞行高度的升高而提前;在一定温度区间内,温度对热失控时间的影响大于气压;当环境温度降低到一定程度时,不会再对热失控峰值温度产生影响;CO体积分数随飞行高度的升高而增加;热失控产生的固体颗粒物以0℃为界限存在差异,飞行高度为8km(80kPa、10℃)时热失控产物燃烧性更强。Aimed at the thermal runaway accident of lithium-ion batteries in the process of civil aviation transportation,through the simulation of a low-temperature and low-pressure environment during the civil aircraft flight,the thermal runaway of a lithium-ion battery is triggered by contact heating of an external heat source,and the thermal runaway characteristics of lithium-ion battery in a variable pressure and variable temperature environment are explored.Results show that the thermal runaway time of lithium-ion battery advances with an increase in the flight altitude.Within a certain temperature range,temperature has a greater impact on the thermal runaway time than air pressure.When the ambient temperature decreases to a certain extent,it will no longer affect the peak temperature of thermal runaway.The CO concentration increases with an increase in the flight altitude.The solid particles produced by thermal runaway are different at a limit of 0℃.When the flight altitude is 8 km(80 kPa,10℃),the combustion of thermal runaway products is stronger.

关 键 词：锂离子电池 热失控 燃烧产物 低温 低气压 

分 类 号：X932[环境科学与工程—安全科学] TM912[电气工程—电力电子与电力传动]