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 (5): 641-650.

• • 上一篇    下一篇

磷酸铁锂电池热失控传播特性的影响因素研究

宋来丰, 田佳敏, 刘勇, 王青松   

  1. (中国科学技术大学 火灾科学国家重点实验室,安徽 合肥 230026)
  • 收稿日期:2024-02-01 修回日期:2024-03-23 出版日期:2024-05-15 发布日期:2024-05-15
  • 作者简介:宋来丰(1999- ),男,山东临清人,中国科学技术大学火灾科学国家重点实验室硕士研究生,主要从事磷酸铁锂电池热失控传播及火焰蔓延研究,安徽省合肥市蜀山区黄山路443号中国科学技术大学西校区,230031。
  • 基金资助:
    国家重点研发计划项目(2021YFB2402001 );国家消防救援局科技计划项目(2023XFZD01)

An investigation of the influencing factors on the thermal runaway propagation characteristics of lithium iron phosphate batteries

Song Laifeng, Tian Jiamin, Liu Yong, Wang Qingsong   

  1. (State Key Laboratory of Fire Science, University of Science and Technology of China, Anhui Hefei 230026, China)
  • Received:2024-02-01 Revised:2024-03-23 Online:2024-05-15 Published:2024-05-15

摘要: 以试验方式探究影响磷酸铁锂电池热失控传播的主要因素,设计了不同荷电状态、电池间距以及电气连接方式的电池模组开展热失控传播试验,根据温度、电压以及质量等参数,分析了不同因素对热失控传播的影响程度。结果表明,3种因素对热失控传播的影响程度依次为:荷电状态、电池间距、电气连接方式。同时得到导致热失控传播的主要传热路径是向下游电池传热。

关键词: 磷酸铁锂电池, 热失控传播, 传热, 温度变化, 电压响应, 质量变化

Abstract: The main factors affecting the thermal runaway propagation of LiFePO4 batteries are studied experimentally, and the thermal runaway propagation experiments are carried out by designing battery modules with different states of charge, spacing and electrical connections. The influence of different factors on the thermal runaway propagation is analyzed according to the parameters of the battery surface temperature, the change of the battery voltage and the mass. The results show that the influence of different factors on thermal runaway propagation is in the following order: state of charge, cell spacing, and electrical connections. Meanwhile, it is also obtained that the main heat transfer mode leading to thermal runaway propagation is heat conduction, with heat transfer to the downstream battery as the main heat transfer path.

Key words: tactile sensing technology, energy storage safety, lithium-ion batteries, thermal runaway, swelling force