摘要
新能源锂离子电池,由于能量密度大,在滥用或受外界环境影响时,易产生热失控行为,引发火灾甚至爆炸。锂电池生产过程中,化成分容工序的电池充放电引发的火灾事故较为频繁。为有效处置化成分容工序中的火灾事故,研究设计了N-1230气体自动灭火系统。通过模拟预测分析,在喷嘴喷射5 s时间,保护区内灭火剂喷放量4.2 kg,其浓度达到设计灭火浓度16%。同时,灭火试验验证,该系统成功在10 s内明显压制明火。该系统具有快速响应、防误喷、经济环保等优点,可有效压制初期锂电池火灾,可靠控制火势扩大。
New energy lithium ion battery, due to its high energy density, is prone to thermal runaway behavior, fire and even explosion when abused or affected by the external environment. In the process of lithium battery production, fire accidents caused by battery charge and discharge are frequent. N-1230 gas automatic extinguishing system is designed to effectively deal with the fire accidents in chemical components. Through simulation and prediction analysis, the spray amount of fire extinguishing agent in the protection area is 4.2 kg in 5 seconds of spraying with the nozzle, and its concentration can reach the designed extinguishing concentration of 16%. In the fire test, the system successfully extinguishes the open flame in 10 s. The system has the advantages of rapid response, spraying mis-operation prevention, economic and environmental protection, etc., which can effectively suppress the initial lithium battery fire, and reliably control the expansion of the fire.
作者
张贤凯
宋小林
王帅
李珍
ZHANG Xiankai;SONG Xiaolin;WANG Shuai;LI Zhen(China University of Geosciences(Wuhan),Wuhan 430074;不详)
出处
《工业安全与环保》
2020年第5期10-15,共6页
Industrial Safety and Environmental Protection
关键词
锂离子电池
化成分容
火灾
自动灭火系统
模型预测
lithium ion battery
chemical composition
fire
automatic fire extinguishing system
model prediction
