Abstract: To study the prevention and control effect of water and low-temperature nitrogen on lithium-ion battery fire caused by puncture, different battery models, different types of fire extinguishing agents and different action time of fire extinguishing agents were selected to carry out lithium-ion battery fire extinguishing experiments. The results show that water agent can be used to extinguish the fire of lithium-ion battery, but it cannot completely block the internal reaction. It needs to be released for a long time to avoid reignition. Low temperature nitrogen cannot effectively cool the battery within the same action time, and the battery has a great risk of reignition during the action period of low temperature, so it has poor applicability for lithium-ion battery fire.

Key words: lithium-ion battery, low temperature nitrogen, thermal runaway, fire extinguishing test