油气电综合能源站电动车热失控危害试验研究
Experimental Study on Thermal Runaway Hazard of Electric Vehicle in Oil-gas Power Station
毕晓蕾1
作者信息
- 1. 化学品安全全国重点实验室,山东青岛 266104;中石化安全工程研究院有限公司,山东青岛 266104
- 折叠
摘要
针对电动车热失控风险与危害,搭建电动车锂离子电池热失控模拟试验平台,开展了锂离子电池热失控后的温升、产气和火灾特性等规律试验研究.试验表明,在安全阀打开之前,锂离子电池会逸出少量H2和CO,H2的浓度比CO浓度更大.当电池热失控安全阀打开后,H2、CO和VOCs气体均快速排出,通过对比探测器的响应时间,H2和VOCs的响应更快,且H2最大峰值浓度可达57×10-6,超过CO最大浓度.60 Ah锂离子电池从热失控产气开始到燃烧完全,共耗时1 221 s,锂离子电池燃烧剧烈、温度高,单体电池火焰最高温度达550 ℃,存在爆炸风险.
Abstract
In view of the risks and hazards of thermal runaway of electric vehicles,a simulation test plat-form for thermal runaway of electric vehicles with lith-ium-ion batteries was built,and experimental studies on the temperature rise,gas production and fire char-acteristics of lithium-ion batteries after thermal runa-way were carried out.The test showed that before the safety valve was opened,the lithium-ion battery would escape a small amount of H2 and CO,and the concentration of H2 was larger than the concentration of CO.When the thermal runaway safety valve of the battery was opened,H2,CO and VOCs gas were quickly discharged.By comparing the response time of the detector,the response of H2 and VOCs was fas-ter,and the maximum peak concentration of H2 can reach 57 × 10-6,exceeding the maximum concentra-tion of CO.The total time from thermal runaway gas production to complete combustion of the 60 Ah lithi-um-ion battery was 1 221 s.The lithium-ion battery burned violently and had a high temperature.The maximum flame temperature of a single battery reached 550 ℃,which led to the risk of explosion.
关键词
综合能源站/电动车/锂离子电池/热失控/充换电Key words
integrated energy station/electric vehi-cle/lithium-ion battery/thermal runaway/charge and replace引用本文复制引用
基金项目
中国石化科技部项目(322787)
中国石化科技部项目(323012)
出版年
2024
国家科技期刊平台
NSTL
万方数据