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.
关键词
磷酸铁锂电池/热失控传播/传热/温度变化/电压响应/质量变化
Key words
lithium iron phosphate battery/thermal runaway propagation/heat transfer/temperature variation/voltage re-sponse/mass variation
维普
万方数据