基于ANSYS的热电池激活过程模拟研究

Simulation investigation on activation of thermal battery based on ANSYS

基于ANSYS对电激活热电池的激活过程进行了模拟,给出了该类热电池激活时间的模拟计算方法,并简要分析了激活过程热电池内部温度分布特性。将该类热电池激活过程分解为点火头着火、引燃纸与加热片燃烧和电解质吸热熔融三个过程,点火头着火用时通过实验获得,引燃纸和加热片燃烧用时通过测试两种材料燃速来计算,电解质吸热熔融过程则通过ANSYS模拟来获取其用时及温度分布。模拟了两款热电池的激活时间,并将其与实测值进行了对比,结果表明该模拟方法能够在一定程度上表征热电池的激活过程,对预测热电池激活时间有一定指导意义。

The activation process of the electric activation thermal battery was simulated based on ANSYS. The simulation method of the activation time of the thermal battery was given, and the temperature distribution characteristics of thermal battery in the activation process were also analyzed. The activation of the thermal battery was separated into three processes: the ignition of electric match, combustion of the fuse strip and heat source pellet and decalescence and melting of the electrolyte. The spending time of the first process was obtained through experiment, and the spending time of the second process was achieved by measuring the burning rate of the fuse strip and heat source pellet, and the spending time and temperature distribution of the third process were investigated by ANSYS simulation. The activation time of two thermal batteries was simulated and compared with the testing value, and the results show that the simulation method can represent the activation of thermal battery to some extent,having some guidance significance for estimating the activation time of thermal battery.