Abstract: Li-ion battery energy storage technology is one of the most promising technologies in the field of energy storage, but the safety problem has always been the main challenge for its large-scale popularization and application. By understanding the?characteristics of different batteries, focusing on the fire characteristics of li-ion batteries, the author summarizes the latest progress in the fire safety research of li-ion battery electric energy storage system, and analyzes the current fire safety status of li-ion battery energy storage system from the aspects of applicability of fire extinguishing agent and development process of fire extinguishing device. This study can provide support of prevention and emergency response to li-ion battery fire accidents.

Key words: fire safety, battery characteristics, li-ion battery, energy storage power station