In fire extinguishing tests the single cell was heated up to a temperature of about 650°C and then the extinguishing agent was applied. Carbon dioxide, foam, dry powder, pure water, and water mist were used to extinguish the Li-ion cell fires. For the battery pack fire, water was used as extinguisher.
Therefore, based on this article, it is worth developing a new type of lithium-ion battery fire extinguishing agent that improves this fire extinguishing agent to have both good fire extinguishing effect and cooling performance. Gang Zhou: Supervision, Project administration, Funding acquisition, Conceptualization.
German motor vehicle inspection association (DEKRA) reported several kinds of water-based fire-extinguishing agents such as water, F-500 and a gelling agent used in extinguishing lithium-ion traction batteries fires. The flame of power LIBs was rapidly extinguished by 1% F-500 within merely 7 s.
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.
Screening tests for battery fire extinguishing agents were also performed. The effectiveness of an agent was evaluated through experiments on the cooling effect of fire extinguishing agents. Among the various agents, water and foam were found to be the most effective. 1. Introduction
Although fire extinguishing agents for LIBs are generally insulated, in practice, this aspect is almost meaningless if the LIBs have already burned . Due to the TR and high temperature of burning LIBs, effective cooling is needed to prevent reburning.