The thermal stability evaluation of materials in a soft-pack commercial cell is tested using C80 calorimeter, including anode, cathode, separator and full cell (mixing of the three materials including additional electrolyte). Thermal runaway characteristic of the commercial cell is tested on the accelerating rate calorimeter (ARC) with two heating modes, including internal heating mode and external heating mode. The results show that the thermal stability of internal material for tested cell follows the below order: anode < separator < cathode. The voltage drop is influenced by the consumption of cathode and separator, while the effect of anode consumption on the voltage can be negligible. Both onset temperature and critical temperature in external heating mode are larger than that in internal heating mode. Thermal runaway induced by high temperature of the tested cell can be divided into three stages: 1) the cell can work under normal mode and all the internal exothermal reaction can be ignorable, 2) the exothermal of anode which can be detected and the thermal runaway can be stopped by effective heat dissipation, and 3) the cathode reaction and separator melting which cause the cell voltage drop and thermal runaway of the cell is inevitable in this stage.

使用C80量热计（包括阳极，阴极，隔板和全电池）（包括附加电解质的三种材料混合），测试了软包装商用电池中材料的热稳定性评估。商业电池的热失控特性在加速量热仪（ARC）上以两种加热模式进行了测试，包括内部加热模式和外部加热模式。结果表明，用于测试电池的内部材料的热稳定性遵循以下顺序：阳极<隔板<阴极。压降受阴极和隔板消耗的影响，而阳极消耗对电压的影响可以忽略不计。外部加热模式下的起始温度和临界温度均大于内部加热模式下的起始温度和临界温度。