Fire test and extinguish tests with CO 2, HFC-227ea and water mist on lithium-ion battery are conducted. Flashover and a jet fire are observed in the test without extinguishing agent. Water mist can effectively extinguish the battery fire, compared to CO 2 and HFC-227ea. Water mist reduces the max temperature of the cell by 133 °C.
The thermal runaway of a lithium-ion battery (LIB) often results in fires or even explosions. Thus, finding a proper, effective and clean extinguishing agent is imperative. In this paper, fire and extinguishing tests on commercially available large-scale LIBs with LiNi x Co y Mn z O 2 (NCM)/graphite electrodes are investigated.
Cold Cut Systems used a cutting extinguisher (Standard Cobra lance) in the pilot study with good results. It was determined there was enough evidence to motivate further studies and tests to develop guidelines for offensive extinguishing efforts of lithium-ion battery fires. This demonstration is an activity within the scope of this work.
The results show that the ABC dry powder fire extinguishing agent modified by microcapsule has a certain cooling effect on the lithium-ion battery with thermal runaway, and the cooling effect is good. Fig. 11. Temperature profile of lithium-ion battery (a) Without any fire extinguishing agent (b) N group (c) NA group (d) NAM group.
Based on this, the three-phase synergistic extinguishing mechanism of gas, liquid and solid under the NAM method is revealed, which provides an important reference for the design of extinguishing agents and extinguishing methods for lithium-ion batteries. 1. Introduction
Therefore, in order to quickly and effectively suppress lithium-ion battery fire, this paper adopts microcapsule technology to break the traditional external protection mechanism of fire extinguishing agent and transform the liquid fire extinguishing agent into a solid fire extinguishing agent.
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Fire test and extinguish tests with CO 2, HFC-227ea and water mist on lithium-ion battery are conducted. Flashover and a jet fire are observed in the test without extinguishing agent. Water mist can effectively extinguish the battery fire, compared to CO 2 and HFC-227ea. Water mist reduces the max temperature of the cell by 133 °C.
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Cui et al. selected water and compressed air foam as the fire extinguishing agent to extinguish the battery pack fire, and proposed the electric vehicle fire enclosure fire extinguishing method. Their experimental results showed that 0.743 m 3 /kWh of foam could inhibit the full-size LIB TR.
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Her research topics are battery safety issues, safer battery materials and design, battery fire extinguishing and explosion suppression. She is Scientific Committee member of the International Symposium on Lithium Battery Fire Safety (ISLBFS). For her work on the battery safety, she received the Public Safety Science and Technology Award (First Prize) and Science and …
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