半封闭空间内电动自行车锂离子电池热失控研究
Research on thermal runaway of lithium-ion batteries for electric bicycles in semi enclosed spaces
荣建忠 1吕银华 2张林志 1林桑3
作者信息
- 1. 应急管理部四川消防研究所,四川 成都 610036
- 2. 杭州银湖安全科技有限公司,浙江 杭州 311402
- 3. 宁波市消防救援支队,浙江 宁波 315012
- 折叠
摘要
制作了阻燃防护幕布覆盖的鞍座支架模型,基于ISO 9705试验平台,搭建了电动自行车热失控装置,研究了电动自行车20 Ah/48 V磷酸铁锂电池、35 Ah/60 V三元锂电池在197.0 L半封闭空间内的热失控特性.结果表明,在试验条件下,磷酸铁锂电池热释放速率峰值为151.40 kW,泄压口外侧30 cm处测得的火焰温度最高,为597.5℃;三元锂电池的热释放速率峰值可达 0.86 MW,泄压口外侧 30 cm处测得的火焰温度最高,为630.3℃.
Abstract
This article presents a saddle bracket model covered with flame-retardant protective curtains,based on the ISO 9705 test platform,a thermal runaway device for electric bicycles was constructed.The thermal runaway characteristics of 20 Ah/48 V LFP battery and 35 Ah/60 V NCM battery for electric bicycles were studied in a semi enclosed space of 197.0 L.The results showed that under experimental conditions,the peak heat release rate of LFP batteries battery was 151.40 kW,and the highest flame temperature measured at 30 cm outside the pressure relief port was 597.5℃;The peak heat release rate of NCM battery can reach 0.86 MW,and the highest flame temperature measured at 30 cm outside the pressure relief port is 630.3℃.
关键词
锂离子电池/半封闭空间/热失控/电动自行车/热释放速率峰值Key words
lithium-ion batteries/semi-enclosed spaces/thermal runaway/electric bicycles/the peak heat release rate引用本文复制引用
基金项目
应急管理部四川消防研究所基科费研究项目(Z20248806)
出版年
2024
NETL
NSTL
万方数据