Abstract: Lithium-ion batteries are increasingly widely used in many fields such as electronic products, electric vehicles and energy storage power stations. However, the safety problems of lithium-ion batteries cannot be ignored. Un鄄 der abuse conditions such as overcharging, overheating and mechanical extrusion, lithium-ion batteries are high鄄 ly prone to thermal runaway (TR), which may in turn cause serious fires and even explosion accidents. This paper reviews the research progress in fire prevention and control technologies for lithium-ion batteries in recent years. It discusses gaseous, water-based, foam, dry powder and novel fire extinguishing agents, as well as fire suppres鄄 sion strategies for lithium-ion batteries. The prospects of fire prevention and control technologies for lithium-ion batteries are also discussed. It is pointed out that future research urgently needs to develop novel composite fire extinguishing agents that combine high fire extinguishing efficiency and cooling performance with low toxicity and environmental friendliness. Fire extinguishing strategies should be further optimized so as to improve the suppression effects on thermal runaway and fire propagation in lithium-ion battery systems

Key words: lithium-ion battery safety, thermal runaway, fire prevention and control, fire extinguishing agent, fire extin原
guishing strategy