Study on fire suppression of power lithium-ion battery by water mist with composite additives

He Wang; Shunbing Zhu; Weiqiang Zhuang

doi:10.1117/12.2634891

25 April 2022 Study on fire suppression of power lithium-ion battery by water mist with composite additives

He Wang, Shunbing Zhu, Weiqiang Zhuang

Proceedings Volume 12244, 2nd International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2022); 122443X (2022) https://doi.org/10.1117/12.2634891
Event: 2nd International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2022), 2022, Guilin, China

Abstract

Through the self-built lithium-ion battery combustion and fire extinguishing platform, with lithium iron phosphate battery as the research object, two parts of the test of thermal runaway of lithium-ion battery and water mist fire extinguishing were carried out. Analyze temperature changes and harmful gas products of battery thermal runaway, and further analyze the fire extinguishing effect of water mist with composite additives, providing technical support for fighting lithium-ion battery fires. The results show that with the increase of SOC, the earlier the thermal runaway time is triggered, the higher the surface temperature of the battery, and the harmful gases such as CO and NO will also increase. Among them, the maximum concentration of CO produced by the thermal runaway combustion of a 100%SOClithiumion battery can reach 3638 ppm, and the amount of NO is very small and does not change much. Comprehensive analysis of the fire extinguishing mechanism and effect of the ternary composite solution from the aspects of battery temperature change, fire extinguishing time and cooling rate, it is found that the SDBS-FC4430-Na2CO3 solution with a mass ratioof1:2:1.5 has the highest fire extinguishing efficiency, and EL90 is the second additive when used as an additive.

Citation Download Citation

He Wang, Shunbing Zhu, and Weiqiang Zhuang "Study on fire suppression of power lithium-ion battery by water mist with composite additives", Proc. SPIE 12244, 2nd International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2022), 122443X (25 April 2022); https://doi.org/10.1117/12.2634891

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