Abstract
The jet fire caused by thermal runaway in lithium-ion batteries can be regarded as typical hazard, severely threatening human life. To study the inhibitory effect of water mist containing additives on thermal runaway-induced jet fire in lithium-ion batteries, an experimental test device employing water mist to suppress fire in lithium-ion batteries was developed. In this work, water mist containing additives was used to extinguish the thermal runaway-induced jet fire. The optimal composition of the additive-containing water mist was as follows by mass: 0.22% FC4430, 0.2% TEOA, 0.32% urea, and 2% KCl. The four-factor and three-level orthogonal methods were employed to explore the inhibitory effect of additive-containing water mist on thermal runaway-induced jet fire in lithium-ion batteries. The optimal composition of mist as determined from these methods was: 0.17% FC-4430, 0.2% TEOA, 0.32% urea, and 2.5% KCl. The results show that the synergistic effects of the physical and chemical additives can significantly improve the ability of water mist to suppress jet fires in lithium-ion batteries. In addition, the additive-containing water mist could be used as a new type of extinguishing agent.
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