Citation

Liu D, Lan F, Chen J, Liu M. China Saf. Sci. J. 2019; 29(3): 39-44.

Copyright

(Copyright © 2019, China Occupational Safety and Health Association, Publisher Gai Xue bao)

DOI

10.16265/j.cnki.issn1003-3033.2019.03.007

PMID

unavailable

Abstract

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

Language: zh