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 ›› 2021, Vol. 40 ›› Issue (12): 1711-1714.

• • 上一篇    下一篇

受限空间锂离子电池热解气体燃烧释能研究

张青松,翟祺悦,赵子恒   

  1. (中国民航大学 民航热灾害防控与应急重点实验室,天津 300300)
  • 出版日期:2021-12-15 发布日期:2021-12-15
  • 作者简介:张青松(1977-),男,河北晋州人,中国民航大学民航热灾害防控与应急重点实验室教授,博士,主要从事空运锂电池火灾防控理论与技术研究,天津市东丽区津北公路2898号,300300。
  • 基金资助:
    国家自然科学基金民航联合基金重点支持项目(U2033204)

Study of energy release from pyrolysis gas combustion of li-ion battery in confined space

ZHANG Qing-song, ZHAI Qi-yue,ZHAO Zi-heng   

  1. (Key Laboratory of Civil Aviation Thermal Disaster Prevention and Emergency, Civil Aviation University of China, Tianjin 300300,China)
  • Online:2021-12-15 Published:2021-12-15

摘要: 为量化100%荷电状态的18650型锂离子电池热解气体燃烧对受限空间环境温度产生的影响,建立了受限空间内锂离子电池热解气体燃烧的产热模型,基于火焰高度估算热解气体燃烧热释放速率,使用Fluent软件模拟受限空间内热解气体燃烧导致环境温度变化并进行实验验证。结果表明:热解气体燃烧热释放速率峰值为(312.26±23.41) W,产生的热量为(1 610.01±176.24) J,对受限空间造成的温度升高为254.74 K,仿真结果与实验数据基本吻合,验证了模型的可靠性。

关键词: 锂离子电池, 热解气体燃烧, 火焰高度, 热释放速率, Fluent仿真

Abstract: In order to quantify the influence of pyrolysis gas combustion of 18650 li-ion battery with 100% state of charge on the ambient temperature of confined space, a heat generation model of pyrolysis gas combustion of li-ion battery in confined space was established. The heat release rate of pyrolysis gas combustion was estimated based on the flame height, and the ambient temperature change caused by pyrolysis gas combustion in confined space was simulated by Fluent software. The results showed that the peak heat release rate of pyrolysis gas combustion is (312.26±23.41) W, the heat generated is (1 610.01±176.24) J,and the temperature rise in the confined space is 254.74 K. The simulation results are basically consistent with the experimental data, which verifies the reliability of the model.

Key words: li-ion battery, pyrolysis gas combustion, flame height, heat release rate, Fluent simulation