Citation

Zhang Q, Liu T, Bai W. China Saf. Sci. J. 2021; 31(9): 44-51.

Copyright

(Copyright © 2021, China Occupational Safety and Health Association, Publisher Gai Xue bao)

DOI

10.16265/j.cnki.issn1003-3033.2021.09.007

PMID

unavailable

Abstract

In order to investigate safety of lithium-ion batteries under different heating conditions in the process of transportation and use, thermal runaway of battery was caused by a cylindrical heating rod and a spring heating ring at a temperature rise rate of 5 and 10 ℃ / min respectively, and experimental phenomenon and data were studied. Thermal runaway gas was sampled and gas composition was analyzed. The results show that thermal runaway process of battery all goes through heat storage stage, exhaust stage and thermal runaway stage. At 5 and 10 ℃ / min, time of thermal runaway caused by spring heating ring is 18.3% and 40. 2% faster than that of heating rod, respectively, and the maximum temperature in the thermal runaway stage decreased by 11.2 and 24.6 ℃, respectively. When battery is heated by heating rod, combustion is more sufficient, and the maximum thermal runaway temperature of battery decreases with the increase of temperature rising rate of heating device. © 2021 China Safety Science Journal. All rights reserved.

Language: zh