Experimental study on fire extinguishing of large-capacity ternary lithium-ion battery by perfluorohexanone and water mist fire extinguishing device

doi:10.19799/j.cnki.2095-4239.2021.0402

Abstract

Abstract:

This work built a lithium-ion battery combustion-inhibition experimental platform, took a ternary aluminum shell power lithium-ion battery monomer with a rated capacity of 150 A·h as the research object, induced thermal runaway by electric heating, and studied the fire suppression and cooling effect of the perfluorohexanone and water mist extinguishing device on the thermal runaway lithium-ion battery. The fire extinguishing time, maximum temperature, quality loss, and fire extinguishing efficiency were measured under different working conditions. The experimental results show that the standard design of the perfluorophanketone fire extinguishing device can quickly extinguish the fire, with a maximum cooling rate of -15.4 ℃/s. However, as the concentration of the fire extinguishing agent in the test box decreases, the lithium-ion battery refires in 60 s after the fire extinguishing, and the water mist fire extinguishing device can effectively extinguish the fire. After the spray, the temperature of the lithium-ion battery drops to about 78.8 ℃?, and the maximum cooling rate is -26.9 ℃/s. However, it is difficult to carry out practical application because of its large water consumption. This experiment can provide experimental support for further research on fire suppression technology of ternary lithium-ion batteries.

Key words: lithium-ion battery safety, perfluorohexanone, water mist, suppression effect

CLC Number:

TM 911.3

Zhuoheng XIE, Ziyang WANG, Gang ZHANG, Zhenning GU, Xiaolong SHI, Bin YAO. Experimental study on fire extinguishing of large-capacity ternary lithium-ion battery by perfluorohexanone and water mist fire extinguishing device[J]. Energy Storage Science and Technology, 2022, 11(2): 652-659.

Figures/Tables 9

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