空间氢镍电池的热设计研究

Thermal design of nickel hydrogen battery for space application

为进一步改善空间用氢镍电池的热设计,降低电池组的轴向温差,对电池壳体以及卡套的结构进行了设计改进,同时引入新的结构件材料(镁合金)来提高电池组散热能力;对改进后的电池组件进行了热学仿真分析、经验公式的定性分析、低真空温差试验和电池组热真空试验验证,验证结果表明,电池组轴向温差与改进前相比降低了39%,电池组的热设计得到了大幅度改善。

In order to improve the thermal design of nickel hydrogen battery, the cell vessel and sleeve design was optimized, and at the same time a new material also was introduced to the battery mechanical structures to obtain a high rate of heat dissipation. The thermal simulation soft ware and an empiristic equation were used to analyze the improved battery module, and the analysis result shows that the thermal design methods were feasible. The final low vacuum temperature distribution test and the high vacuum cycle test further validate that all the battery thermal design is improved remarkably, and the battery temperature difference decreases 39% comparing with the traditional battery.