Fire Extinguishing Test of Lithium-Ion Battery Case in Electric Bus

In order to study the fire characteristics and fire extinguishing methods of lithium-ion battery case in electric bus, fire test model has been built using hard case prismatic LiFePO4 cells. Based on this, fire extinguishing test of lithium ion battery case in electric bus is conducted using perfluorohexanone extinguishing agent. The test results show that the agent of perfluorohexanone could put out the flame of battery cell and it has a certain cooling effect on battery which plays a certain role in blocking thermal runaway prorogation. The research results are vital to the perfluorohexanone engineering application in electric bus and the special fire extinguishing system research for lithium-on batteries. All of these provide security for the further promotion of new energy technologies.