摘要
研究电解液的火灾危险性有助于定量评估电池的安全性。分析了环境压力、碳酸酯溶剂质量比(碳酸亚乙酯(EC)/碳酸丙烯酯(PC)/碳酸甲乙酯(EMC))等因素对电解液的火焰中心线温度、质量损失速率、热释放速率等燃烧特性相关参量的影响。结果表明电解液的稳定燃烧阶段占燃烧过程的主要部分;火焰中心线温度随着压力的降低而升高;增加PC在体系中的比重在提升电解液低温性能的同时,会导致火灾危险性的升高。
Investigating the fire hazard of electrolyte would be conducive to the quantitative evaluation of battery safety.In this paper,the impact of ambient pressure and mass ratio of carbonate solvents ethylene carbonate(EC)/propylene carbonate(PC)/ethyl methyl carbonate(EMC)on the parameters associated with combustion characteristics such as flame centerline temperature,mass loss rate,heat release rate for two kinds of electrolyte was studied and analyzed.The experimental results showed that the stable combustion stage of electrolyte was the main part during the whole combustion processing.The flame centerline temperature increased with the decrease of the pressure.The gain of PC content would improve the low-temperature performance of the electrolyte,while which would also lead to an increase in fire risk.
作者
郑开汇
汪箭
陈钦佩
孟晓凯
刘长城
黄鹊
ZHENG Kai-hui;WANG Jian;CHEN Qin-pei;MENG Xiao-kai;LIU Chang-cheng;HUANG Que;无(School of Environment and Safety Engineering,North University of China,Shanxi Taiyuan 030051,China;State Key Laboratory of Fire Science,University of Science and Technology of China,Anhui Hefei 230026,China;Tianjin Fire Science and Technology Research Institute of MEM,Tianjin 300381,China;State Grid Shanxi Electric Power Research Institute,Shanxi Taiyuan 030051,China)
出处
《消防科学与技术》
CAS
北大核心
2021年第6期793-797,共5页
Fire Science and Technology
基金
应急管理部消防救援局科技计划项目(2020XFCX33)
火灾科学国家重点实验室开放课题(HZ2020-KF04)
山西省高等学校科技创新项目(2019L050)
中北大学2019年自然科学基金(XJJ201912)
国家自然科学基金(51906238)。
关键词
锂离子电池
电解液
碳酸丙烯酯
燃烧特性
lithium-ion batteries
electrolyte
propylene carbonate
combustion characteristic
