主管：中华人民共和国应急管理部
主办：应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU
消防科学与技术

消防科学与技术 ›› 2023, Vol. 42 ›› Issue (2): 236-240.

• • 上一篇    下一篇

全氟己酮和细水雾抑制三元锂离子电池火灾有效性研究

周 洁1，何骁龙2   

  1. （1.北京市天安门地区消防救援支队，北京 100035； 2.中国科学技术大学 火灾科学国家重点实验室，安徽 合肥 230026）
  • 出版日期:2023-02-15 发布日期:2023-02-17
  • 作者简介:作者简介：周 洁(1987- )，女，江苏靖江人，北京市天安门地区消防救援支队工程师，硕士，主要从事建筑防火、消防监督管理方面的研究，北京市东城区前门东大街5号，100035。

Study on the effectiveness of C6F12O and water mist in suppressing thermal runaway fire of NCM lithium-ion battery

Zhou Jie1, He Xiaolong2   

  1. (1. Beijing Tiananmen District Fire and Rescue Division, Beijing 100035, China; 2. State Key Laboratory of Fire Science, University of Science and Technology of China, Anhui Hefei 230026, China)
  • Online:2023-02-15 Published:2023-02-17

摘要： 锂离子电池热失控是造成电动汽车火灾事故的首要因素。文章概述了车用锂离子电池热失控火灾危险性及抑制方法，并开展了全氟己酮、细水雾对车用三元锂离子电池热失控火灾的灭火试验。结果表明，三元锂离子电池热失控时表面最高温度超过500 ℃，表面最大升温速率达到18.93 ℃/s；全氟己酮灭火剂和细水雾均能有效扑灭电池初期明火，但在灭火后数分钟内电池发生复燃。两种灭火剂均能有效降低电池表面最高温度和最大升温速率。

Abstract: Thermal runaway of lithium-ion battery is the primary factor causing electric vehicle fire accidents. In this paper, the risk of thermal runaway fire of automotive Lithium-ion battery and its suppression and extinguishing methods are summarized, and the fire extinguishing experiments of C6F12O and water mist on thermal runaway fire of ternary lithium-ion battery are carried out. The results show that the maximum surface temperature exceeds 500 ℃ and the maximum surface temperature rise rate reaches 18.93 ℃/s when the ternary lithium battery is thermally out of control; Both C6F12O and water mist can effectively extinguish the initial open fire of the battery, but the battery reignited within a few minutes after the fire was extinguished. The two extinguishing agents can effectively reduce the maximum surface temperature and the maximum heating rate of the battery.

Key words: electric vehicle, lithium-ion battery, thermal runaway, C6F12O, water mist