An investigation of the influencing factors on the thermal runaway propagation characteristics of lithium iron phosphate batteries
The main factors affecting the thermal runaway propa-gation of LiFePO4 batteries are studied experimentally,and the thermal runaway propagation experiments are carried out by de-signing battery modules with different states of charge,spacing and electrical connections.The influence of different factors on the thermal runaway propagation is analyzed according to the pa-rameters of the battery surface temperature,the change of the bat-tery voltage and the mass.The results show that the influence of different factors on thermal runaway propagation is in the follow-ing order:state of charge,cell spacing,and electrical connections.Meanwhile,it is also obtained that the main heat transfer mode leading to thermal runaway propagation is heat conduction,with heat transfer to the downstream battery as the main heat transfer path.
lithium iron phosphate batterythermal runaway propagationheat transfertemperature variationvoltage re-sponsemass variation
万方数据
维普
