长寿命空间遥感器大功率电控箱热设计  

Thermal Design of High-power Electric Cabinet for Long-Life Space Camera

作　　者：王凤丽[1] 郑洪波 孙丽崴[1] WANG Feng-li;ZHENG Hong-bo;SUN Li-wai(CAS Key Laboratory of Infrared System Detection and Imaging Technology,CAS Shanghai Institute of Technical Physics,Shanghai 20008,China)

机构地区：[1]中国科学院上海技术物理研究所红外探测与成像技术重点实验室,上海200083

出　　处：《计算机仿真》2021年第9期35-39,共5页Computer Simulation

基　　金：国家重点研发计划项目(2016YFB0500600)。

摘　　要：依据指标要求(结温不超过85℃)对长寿命空间遥感器大功率电控箱进行热设计。统计电控箱内所有功率大于200mW的元器件,逐级建立有限元模型进行热分析,得出各大功率元器件的壳温,优化散热路径,热分析迭代,再辅以热试验的验证,从而得出一种高效地热设计方案。经热分析优化后,在60℃的环境温度下,电控箱内元器件壳温最高到73.4℃(结温80.6℃)。实物在等温度环境条件的热试验,元器件表面最高温度为74.142℃。结果证实设计的方法满足设计指标要求。A thermal design of a high-power electric cabinet for a long-life space camera was performed according to the index requirements(junction temperature<85℃).All components in the electric cabinet with power greater than 200 mW were counted.Through the step-by-step finite element simulation analysis(FEA),the shell temperature of each high-power component was obtained,the thermal analysis iteration was carried out,the heat dissipation path was optimized,and the thermal test verification was supplemented to obtain an efficient geothermal design scheme.At the ambient temperature of 60℃,the shell temperature of the component FEA was 73.4℃(junction temperature 80.6℃).The real object was subjected to a thermal test under isothermal environmental conditions,and the maximum shell temperature of the component was 74.142°C.The results confirm that the design method meets the design index requirements.

关 键 词：空间遥感器 电控箱 热设计 

分 类 号：V443[航空宇航科学与技术—飞行器设计] TP391.9[自动化与计算机技术—计算机应用技术]