Abstract: In order to study the rapid extinguishing of electric vehicle fires, the author designed an electric vehicle fire extinguishing device based on practical work experience. The performance of the extinguishing device was tested by different water pressures of the fire truck. Select electric vehicles for combustion tests and observe the effectiveness of the firefighting device in extinguishing electric vehicles. The results show that the electric vehicle fire extinguishing device has significantly better water flow rate and impact force than the multifunctional water gun under the conditions of 0.5 MPa and 0.7 MPa water output from the fire truck. In the actual combustion test, the firefighting device effectively cools down and controls the fire of the burning vehicle.

Key words: electric vehicles, fire, fire extinguishing and rescue, firefighting equipment