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 ›› 2024, Vol. 43 ›› Issue (8): 1138-1144.

• • 上一篇    下一篇

抑制锂离子电池火灾的新型灭火剂研究进展

张淇厚1, 李思成2, 刘佳玲1   

  1. (1.中国人民警察大学 研究生院,河北 廊坊 065000;2.中国人民警察大学 防火工程学院,河北 廊坊 065000)
  • 收稿日期:2024-01-22 修回日期:2024-03-13 出版日期:2024-08-19 发布日期:2024-08-15
  • 作者简介:张淇厚(2001- ),男,辽宁凌源人,中国人民警察大学在读研究生,主要从事锂电池安全、防排烟等方面的研究,河北省廊坊市安次区西昌路220号,065000。
  • 基金资助:
    基金项目:河北省重点研发计划项目(22375418D)

Research progress of new fire extinguishing agents for suppressing lithium battery fires

Zhang Qihou1, Li Sicheng2, Liu Jialing1   

  1. (1. Graduate School, China People's Police University, Hebei Langfang 065000, China; 2. Department of Fire Engineering, China People's Police University, Hebei Langfang 065000, China)
  • Received:2024-01-22 Revised:2024-03-13 Online:2024-08-19 Published:2024-08-15

摘要: 介绍锂离子电池的基本结构与工作原理,分析锂离子电池热失控的触发方式,重点分析3种新型锂离子电池灭火剂,即水凝胶灭火剂、全氟己酮灭火剂以及干水灭火剂的灭火机理、灭火剂制备以及灭火性能,并且对其他正处于研究初期的新型灭火剂进行了概括与展望。在此基础上,对3种灭火剂的优缺点进行总结和归纳,并为今后灭火剂灭火效果的提高和性能的完善提供思路,提升锂离子电池的安全性,促进电化学储能技术的发展与应用。

关键词: 锂离子电池, 热失控, 灭火机理, 水凝胶, 全氟己酮, 干水

Abstract: Based on the flux chamber test model developed by the United States Environmental Protection Agency, this study investigates the impact of several factors, such as expansion, foam thickness, and drainage time, on the sealing performance of synthetic foam extinguishing agents. The investigation is conducted under the production mode of compressed air foam. Additionally, the study compares and analyzes the sealing performance of compressed air foam and aspirated foam, aiming to elucidate the mechanisms that influence foam sealing performance. The results indicate that the foam stability of the synthetic foam extinguishing agent does not necessarily increase with expansion. It is found that the inhibition of the liquid film on oil vapor in the foam plays a crucial role in foam sealing performance. Specifically, lower foaming ratios result in higher liquid content in the foam, ultimately enhancing the sealing performance against oil vapor. Based on these findings, it is recommended to employ foam with a expansion of less than 10 for tackling 120# solvent oil leakage accidents. Furthermore, the study shows that, under the same expansion, compressed air foam exhibits superior stability, higher liquid content, and better sealing performance compared to aspirated foam.

Key words: expansion, foam thickness, flux chamber, explosion limit, compressed air foam