Citation

Deng K, Zhang Y, Xu B, Ma C, Niu Y. China Saf. Sci. J. 2019; 29(11): 83-88.

Copyright

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

DOI

10.16265/j.cnki.issn1003-3033.2019.11.014

PMID

unavailable

Abstract

In order to clarify the fire hazard of lithium batteries, the combustion characteristics parameters of different quantities of lithium-ion batteries, such as cell surface temperature, flame shape, flame temperature, heat release rate, mass loss rate and flammable gas volume fraction, were studied by experiment. The results show that the thermal runaway temperature of lithium iron phosphate battery pack is around 200-300 ℃, showing concentrated combustion, and the gas flame temperature can reach 1100 ℃, that the fire environment of lithium iron phosphate battery pack has multiple spray flames with the increase of the number of batteries, and the peak of heat release rate is closely related to the spray flame, that the maximum mass loss rate of lithium iron phosphate battery pack changes in a power function with the increase of the number of batteries, and that the amount of heat released is proportional to the 1.28 power of the number of batteries. © 2019 China Safety Science Journal. All rights reserved.

Language: zh