带自动灭火装置的车用锂电池箱盖系统开发与验证

作者：Liu Dexing; Lan Fengchong; Chen Jiqing^*; Liu Mengmeng

来源：China Safety Science Journal, 2019, 29(3): 39-44.

DOI：10.16265/j.cnki.issn1003-3033.2019.03.007

• automatic extinguisher
• battery cover system
• combustion characteristics
• electric vehicle
• lithium battery
• passive safety

In view of the shortcomings in the measures for monitoring and preventing the thermal runaway of vehicle lithium battery, a lithium battery cover system with an automatic extinguishing device was developed.For developing the system, combustion characteristics of a single ternary lithium-ion battery and its main components were measured by carrying out combustion tests, and corresponding temperature and heat release rate curves were obtained. Based on this, the overall design scheme of the cover system was determined, and the fire detection module and fire extinguishing module were selected and designed. Finally, combined with Semenov thermal runaway principle, heat transfer theory and the design requirements of GB50084-2017, the fire extinguishing effect of the cover system applied to a battery pack of an electric vehicle is verified. The results show that the cover system can effectively monitor and extinguish the early local fire of battery pack, and keep cooling to prevent the fire from re-igniting, which has a strong marketing potential. ? 2019 China Safety Science Journal

• 单位
  华南理工大学