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 ›› 2021, Vol. 40 ›› Issue (6): 779-782.

• •    下一篇

钛酸锂电池模组热失控扩展抑制技术研究

董海斌1，尹国瑞2，安普春2，羡学磊1，伊程毅1   

  1. 1. 应急管理部天津消防研究所，天津300381；2. 中车青岛四方机车车辆股份有限公司，山东青岛266111
  • 出版日期:2021-06-15 发布日期:2021-06-15
  • 作者简介:董海斌（1977-），男，宁夏人，应急管理部天津消防研究所副研究员，硕士，主要从事新能源锂离子电池火灾防控技术研究，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 propagationsuppression tech nology of lithium titanate battery module

DONG Hai-bin1, YIN Guo-rui2, AN Pu-chun2, XIAN Xue-lei1,YI Cheng-yi1   

  1. 1. Tianjin Fire Science and Technology Research Institute of MEM, Tianjin 300381，China; 2. CRRC Qingdao Sifang Co., Ltd., Shandong Qingdao 266111, China
  • Online:2021-06-15 Published:2021-06-15

摘要： 以20 Ah 方形钛酸锂电池为研究对象，研究过充工况下电池单体的热失控特性，获取钛酸锂电池在100%SOC 工况下的温度、电压及气体成分和含量的变化规律及参数。实验证明，钛酸锂电池热失控后喷射火焰的程度比较剧烈。为有效抑制电池热失控在模组内的扩展，提出了使用全氟己酮抑制剂在电池爆喷前对使用空间进行惰化的解决思路。通过实体实验，验证了提前释放抑制剂可以有效抑制电池模组的热失控扩展，并获取了抑制剂释放时机、惰化浓度等关键技术参数。

关键词: 钛酸锂电池, 热失控, 模组, 热失控扩展, 抑制剂, 惰化

Abstract: The thermal runaway characteristics of 20 Ah square lithium titanate battery under overcharge condition were studied, and the variation rules and parameters of temperature, voltage, gas composition and content of lithium titanate battery under 100% SOC condition were obtained. Experiments showed that the jet flame of lithium titanate battery is more severe after thermal runaway. In order to restrain the propagation of thermal runaway of lithium titanate battery in modules effectively, a solution of using perfluoroh exanone inhibitor to inert the use space of lithium titanate battery before thermal runaway wasproposed. Through the experiments, it is verified that the early release inhibitor can inhibit the thermal runaway expansion of the battery moduleeffectively, and the key technical parameters such as the release time and inerting concentration of the inhibitor were obtained.

Key words: lithium titanate battery, thermal runaway, module, thermal runaway propagation, inhibitor, inert