论文部分内容阅读
氢镍蓄电池电解液在轨流动特性是影响其工作性能和使用寿命的重要因素,对蓄电池设计与优化具有重要意义。针对高轨通信卫星使用的80 Ah氢镍蓄电池,建立了电解液流动运动的三维仿真模型,采用计算流体动力学(CFD)数值仿真方法,对氢镍蓄电池单体内的电解液在轨微重力条件下的流动特性和分布特点进行了仿真研究。通过对比分析不同边界条件下的仿真结果,提出了在蓄电池极堆与壳体两端之间增加电解液流动路径可以提高电解液回流速度,并改进卫星氢镍蓄电池在轨工作性能,研究结果可为卫星蓄电池和电源系统设计提供参考。
Ni-MH battery electrolyte flow characteristics in the rail is an important factor affecting its performance and service life, battery design and optimization is of great significance. In this paper, a three-dimensional simulation model of the flow of electrolyte was established for the 80 Ah Ni-MH battery used in high-altitude orbit communication satellites. The computational fluid dynamics (CFD) numerical simulation method was used to simulate the electrolyte in orbit and microgravity Under the flow characteristics and distribution characteristics of the simulation study. By comparing and analyzing the simulation results under different boundary conditions, it is proposed that increasing the electrolyte flow path between the battery stack and both ends of the housing can increase the electrolyte backflow speed and improve the on-orbit performance of the satellite Ni-MH battery. Provide reference for satellite battery and power system design.