中国安全科学学报 ›› 2019, Vol. 29 ›› Issue (3): 27-31.doi: 10.16265/j.cnki.issn1003-3033.2019.03.005

• 安全工程技术科学 • 上一篇    下一篇

动力锂离子电池穿刺试验安全性研究

彭波1,2 助理研究员, 罗琼瑶1 工程师, 张怡1,2 助理研究员, 王立芬1,2 助理研究员, 赵长征1,2 研究员   

  1. 1 公安部四川消防研究所,四川 成都 610036;
    2 公安部消防局 四川火灾物证鉴定中心,四川 成都 610036
  • 收稿日期:2018-12-05 修回日期:2019-02-16 发布日期:2020-11-26
  • 作者简介:彭 波 (1975—),男,湖北京山人,硕士,助理研究员,主要从事火灾调查、火灾物证鉴定和锂离子电池火灾风险及防护技术研究。E-mail:184966457@qq.com。
  • 基金资助:
    公安部技术研究计划项目(2016JSYJC43);公安部四川消防研究所基本科研业务费专项项目(20168803Z)。

Study on safety of power Li-ion battery based on puncturing experiments

PENG Bo1,2, LUO Qiongyao1, ZHANG Yi1,2, WANG Lifen1,2, ZHAO Changzheng1,2   

  1. 1 Sichuan Fire Research Institute of MPS, Chengdu Sichuan 610036, China;
    2 Sichuan Fire Evidence Identification Center of Fire Department of MPS, Chengdu Sichuan 610036, China
  • Received:2018-12-05 Revised:2019-02-16 Published:2020-11-26

摘要: 为研究动力锂离子电池受到物理穿刺时的火灾和爆炸安全性能,针对3种常规18650型锂离子电池(其中2种为钴酸锂正极,1种为三元材料正极),开展不同穿刺速度和穿刺深度条件下的安全性能试验,以锂离子电池正极表面温度来评价电池的火灾和爆炸安全性。研究表明:锂离子电池穿刺深度越深,正极表面温度升高越快,火灾安全风险越高;当穿刺深度达到100%时,2种正极材料电池的温度升高受穿刺速度影响较小,同一电池的升降温速率基本一致;相同穿刺速度下,相比于三元材料正极电池,钴酸锂正极电池升温更快,达到的最高温度更高。

关键词: 锂离子电池, 穿刺, 安全性, 正极温度, 火灾

Abstract: In order to study the safety performance of power Li-ion battery in puncturing, puncturing experiments of different depths and speeds were carried out on three kinds of common 18650-type Li-ion batteries (two kinds of them are positive cobalt acid lithium materials and the other ternary materials). During the puncturing process, surface temperature of the positive electrode of the battery was monitored to evaluate its risks for fire and explosion. The results show that the deeper the puncturing depth is, the higher the temperature-rise rate of Li-ion battery and fire risk will be, that when the puncturing depth is 100%, puncturing speed has little effect on the temperature rise of these two kinds of batteries using a cathode material, that the temperature-rise rates of the same kind of batteries are almost the same under different puncturing speeds, and that temperature of LiCoO2 Li-ion battery rises faster and reaches higher than that of ternary materials Li-ion battery under the same puncturing speed.

Key words: Li-ion battery, puncturing, safety, temperature of positive electrode, fire

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