电动汽车锂电池灭火技术研究

为了预防和减少电动汽车锂电池火灾造成的危害，分析了电动汽车发生火灾的现状，对近年来电动汽车起火案例进行了调查，针对电芯和动力锂电池组结构，分别对动力锂电池中的单颗电芯和电池模组中间的电芯进行加热试验。结果表明，动力锂电池不会发生剧烈爆炸，但具有火势猛烈、蔓延迅速的特点。通过对动力锂电池系统的热失控机制和起火过程的分析，对电动汽车动力锂电池火灾的灭火技术进行了研究，结合实际工作提出了灭火技术与方法建议。

Research on fire extinguishing technology of lithium battery in electric vehicle

In order to prevent and reduce the harm caused by the lithium battery fire of electric vehicles,this paper analyzes the current situation of the fire in electric vehicles,investigates the cases of the fire in electric vehicles in recent years,and conducts the heating test for the single cell and the cell in the middle of the battery module in the power lithium battery according to the structure of the cell and the power lithium battery group.The results show that the power lithium battery will not explode violently,but it has the characteristics of violent fire and rapid spread.Based on the analysis of the thermal runaway mechanism and fire process of the power lithium battery system,the fire extinguishing technology of the power lithium battery fire of electric vehicle is studied,and the fire extinguishing technology and method suggestions are put forward in combination with the actual work.