三元锂电池电动自行车火灾燃烧特性研究  

Study on combustion characteristics of ternary lithium battery-electric bicycle fires

作　　者：何学超 刘振飞 何瑾 He Xuechao;Liu Zhenfei;He Jin(Sichuan Fire Science and Technology Research Institute of MEM,Sichuan Chengdu 610036,China)

机构地区：[1]应急管理部四川消防研究所,四川成都610036

出　　处：《消防科学与技术》2024年第5期722-725,共4页Fire Science and Technology

基　　金：基本科研业务费项目(20218803Z,20238812Z)。

摘　　要：通过对三元锂电池电动自行车开展实体燃烧试验,研究了电动自行车火灾的发展和蔓延过程,分析了燃烧现象、温度及烟气变化等典型特征。试验结果表明,电动自行车火灾发展迅速,燃烧过程中伴随射流火和爆炸现象。在距地面1 m处,测得的火羽流温度最高可达730℃,此时对应的最大热释放速率为1 290 kW。通过对烟气毒性进行评估,计算得到有效剂量百分数FED值为1.8,表明在此火灾环境中大约一半人员会因烟气毒气危害而丧生。此外,产生的烟气中还包含大量易燃易爆气体,其中H2含量最高为2 300μL/L。The development and spreading process of electric bike fire is studied by carrying out physical combustion test on a ter-nary lithium battery-electric bicycle,and typical features such as combustion phenomenon,temperature and smoke change are ana-lyzed.The test results show that the e-bike fire develops rapidly,and the combustion process is accompanied by jet fire and explo-sion phenomena.The fire plume temperature measured at 1 m above the ground could reach up to 730℃,which corresponds to a maximum heat release rate of 1290 kW.By evaluating the toxic-ity of the smoke,an effective dose percentage(FED)value of 1.8 is calculated,which indicates that about half of the people in this fire environment would be killed due to smoke toxicity hazards.In addition,the generated smoke contains a large amount of flam-mable and explosive gases,among which H2 content is highest at 2300μL/L.

关 键 词：三元锂电池 电动自行车火灾 火蔓延 烟气毒性 

分 类 号：U492.83[交通运输工程—交通运输规划与管理] X928.7[交通运输工程—道路与铁道工程]