Citation

Li L, Chen H, Liu H, Zhang Y, Li Y, Chen Y. China Saf. Sci. J. 2022; 32: 111-117.

Copyright

(Copyright © 2022, China Occupational Safety and Health Association, Publisher Gai Xue bao)

DOI

10.16265/j.cnki.issn1003-3033.2022.S2.0126

PMID

unavailable

Abstract

In order to solve the fire safety issue of energy storage system caused by thermal runaway of lithium iron phosphate battery, the fire extinguishing mechanism and performance characteristics of several common extinguishants were studied, and a more effective fire extinguishing method was explored and practiced. Firstly, the thermal runaway process and combustion characteristics of lithium iron phosphate battery were summarized. Then, the fire extinguishing mechanisms of extinguishants such as heptafluoropropane, gas⁃liquid composite extinguishant, perfluorohexone, aerosol and water mist, as well as the effects of fire extinguishing and reignition suppression on the fire accidents of lithium iron phosphate battery were analyzed. Finally, based on the typical fire fighting system case of prefabricated cabin type lithium iron phosphate battery energy storage system in actual work, the system composition and control logic were introduced. The results show that the fire of lithium iron phosphate battery is a comprehensive fire of category A, B and C. Heptafluoropropane, gas⁃liquid composite extinguishant, perfluorohexanone, aerosol and water mist have their own advantages and disadvantages in terms of fire extinguishing effect including cooling effect, inhibition of reignition and technological maturity, but none of them can simultaneously extinguish open fire and inhibit battery reignition. It is more effective to use the fire extinguishing method of combining perfluorohexone and water. © 2022 China Safety Science Journal

Language: zh