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 ›› 2020, Vol. 39 ›› Issue (2): 161-164.

• • 上一篇    下一篇

三元锂离子电池低氧环境热失控特性研究

张少禹，董海斌，羡学磊，伊程毅，李毅，刘连喜，于东兴，盛彦锋，马建琴，赵青松   

  1. （应急管理部天津消防研究所，天津300382）
  • 收稿日期:2019-09-26 出版日期:2020-02-15 发布日期:2020-02-15
  • 作者简介:张少禹，男，应急管理部天津消防研究所检测中心副主任，研究员，主要从事消防产品检测技术及消防标准化等研究，天津市西青区津涞公路富兴路2号，300382。
  • 基金资助:
    国家重点研发计划项目（2018YFB0104000）

Research on thermal runaway characteristics of ternary lithium ion battery in low oxygen environment

ZHANG Shao-yu, DONG Hai-bin, XIAN Xue-lei,YI Cheng-yi, LI Yi, LIU Lian-xi,YU Dong-xing, SHENG Yan-feng,MA Jian-qin, ZHAO Qing-song   

  1. (Tianjin Fire Research Institute of MEM, Tianjin 300382, China)
  • Received:2019-09-26 Online:2020-02-15 Published:2020-02-15

摘要： 研究了NCM811三元软包锂离子电池在封闭空间中氧气体积分数为21%和10.64%环境下的热失控特性。实体实验结果表明，氧气体积分数为21%下电池热失控时，先喷射连续火焰再喷射火星，而氧气体积分数为10.64%低氧环境下电池热失控时，电池始终喷射火星，火星未形成连续火焰。电池热失控时喷射的火星在低氧环境中能够短暂燃烧，但火星不能形成连续火焰，表明NCM811三元锂离子电池热失控是一个释氧过程，但电池释放的氧气不足以维持火星的连续燃烧。

关键词: 三元锂离子电池, 热失控, 低氧, 火焰, 火星

Abstract: The thermal runaway characteristics of NCM811ternary soft-packed lithium ion battery in closed space with oxygen concentration of 21% and 10.64% were studied. The experimental results show that when the oxygen concentration is 21%, continuous flame and then mars is sprayed. When the oxygen concentration is down to 10.64% , continuous flame is not formed on mars. The fact that the mars ejected during the thermal runaway of the battery can burn briefly in a low-oxygen environment, but the mars cannot form a continuous flame indicates that the thermal runaway of NCM811ternary lithium ion battery is a process of releasing oxygen, but the oxygen released by the battery is not enough to sustain the continuous combustion of mars.

Key words: ternary lithium ion battery, thermal runaway, low oxygen concentration, flame, mars