磷酸铁锂电池组燃烧特性研究*

doi:10.16265/j.cnki.issn1003-3033.2019.11.014

中国安全科学学报 ›› 2019, Vol. 29 ›› Issue (11): 83-88.doi: 10.16265/j.cnki.issn1003-3033.2019.11.014

磷酸铁锂电池组燃烧特性研究^*

邓康¹, 张英¹ 副教授, 徐伯乐² 研究员, 马出原¹, 牛奕^**1 讲师

1 武汉理工大学安全科学与工程系,湖北武汉 430070;
2 中国舰船研究设计中心,湖北武汉 430064

收稿日期:2019-08-10 修回日期:2019-10-11 发布日期:2020-10-30
通讯作者: ** 牛奕(1986 —),河南安阳人,博士,讲师,主要从事火蔓延机制和安全模拟方面的研究。E-mail:niuyi@whut.edu.cn。
作者简介:邓康 (1996—),男,湖北武汉人,硕士研究生,主要研究方向为锂电池安全和相关灭火技术。E-mail:268339@whut.edu.cn。
基金资助:
国家重点研发计划项目(2017YFC0804705);国家自然科学基金资助(51706164)。

Study on combustion characteristics of lithium iron phosphate battery pack

DENG Kang¹, ZHANG Ying ¹, XU Bole ², MA Chuyuan ¹, NIU Yi ¹

1 Department of Safety Science and Engineering, Wuhan University of Technology, Wuhan Hubei 430070, China;
2 China Ship Research and Design Center, Wuhan Hubei 430070, China

Received:2019-08-10 Revised:2019-10-11 Published:2020-10-30

摘要/Abstract

摘要： 为明确锂电池的火灾危险性,对不同数量磷酸铁锂电池组火灾时的电池表面温度、火焰形态、火焰温度、热释放速率、质量损失损率以及可燃气体体积分数等燃烧特性参数进行试验研究。结果表明:磷酸铁锂电池组的热失控温度约200～300 ℃,呈现集中燃烧,气相火焰温度可达1 100 ℃;磷酸铁锂电池组电池数量增加,喷射火焰出现的次数增多,热释放速率峰值相应出现;电池组最大质量损失速率随电池数量的增加呈幂函数变化,放热量与电池数量的1.28次方成正比。

关键词: 锂电池, 热失控温度, 喷射火焰, 最大质量损失速率, 放热量

Abstract: In order to clarify the fire hazard of lithium batteries, the combustion characteristics parameters of different quantities of lithium-ion batteries, such as cell surface temperature, flame shape, flame temperature, heat release rate, mass loss rate and flammable gas volume fraction, were studied by experiment. The results show that the thermal runaway temperature of lithium iron phosphate battery packis around 200-300 ℃, showing concentrated combustion, and the gas flame temperature can reach 1 100 ℃,that the fire environment of lithium iron phosphate battery pack has multiple spray flames with the increase of the number of batteries, and the peak of heat release rate is closely related to the spray flame, that the maximum mass loss rate of lithium iron phosphate battery pack changes in a power function with the increase of the number of batteries, and that the amount of heat released is proportional to the 1.28 power of the number of batteries.

Key words: lithium battery, thermal runaway temperature, jet flame, maximum mass loss rate, heat release

中图分类号:

X932

邓康, 张英, 徐伯乐, 马出原, 牛奕. 磷酸铁锂电池组燃烧特性研究^*[J]. 中国安全科学学报, 2019, 29(11): 83-88.

DENG Kang, ZHANG Ying, XU Bole, MA Chuyuan, NIU Yi. Study on combustion characteristics of lithium iron phosphate battery pack[J]. China Safety Science Journal, 2019, 29(11): 83-88.

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磷酸铁锂电池组燃烧特性研究^*

Study on combustion characteristics of lithium iron phosphate battery pack

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