为了验证真空壳体用于热电池的保温效果，将相同的电堆分别采用不锈钢双层壁真空壳体与不锈钢壳体加玻璃纤维保温结构两种方式装配成单元电池，在60 mA/cm²电流密度下激活工作，进行了电性能及壳体典型位置的表面温度测试。结果显示：与普通壳体保温装配的单元电池相比，真空壳体装配的单元电池在高温、低温及常温下的平均工作时间延长了623 s，输出能量提升45%；壳体侧表面最高温度由221℃降至140℃，且最高温度的出现时刻由315 s延后至540 s。这些数据表明真空壳体用于热电池具有高效的保温效果，该结论有望为长寿命热电池的设计开发提供参考。

In order to vertify the thermal insulation effect of vacuum shell used in thermal battery,the same thermal battery stack were assembled with stainless steel double-walled vacuum shell and stainless steel shell with glass fiber insulation structure respectively,which were activated at a current density of 60 mA/cm²,and then the electrical properties and surface temperature of the shell were tested.The results showed that the average working time of vacuum shell at high,low and normal temperature was 624 s longer than that of the thermal battery assembled by ordinary shell insulation,and output energy increased by 45%.The maximum temperature on the side surface of the shell decreased from221℃ to 140 ℃,and the timing of the maximum temperature delayed from 315 s to 540 s,indicating that the vacuum shell has high insulation effect when uesd in thermal battery.This conclusion is expected to provide a reference for the design and development of long life thermal batteries.