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作 者:聂泽森 杨志甫 张威[2] 彭方汉[3] 周振华 NIE Zesen;YANG Zhifu;ZHANG Wei;PENG Fanghan;ZHOU Zhenhua(Beijing Research Institute of Telemetry,Beijing 100076,China;Beijing University of Civil Engineering&Architecture,Beijing 100044,China;Beijing Institute of Spacecraft System Engineering Beijing Key Laboratory of Space Thermal Control Technology,Beijing 100094,China;Beijing Institute of Space Mechanics&Electricity,Beijing 100094,China)
机构地区:[1]北京遥测技术研究所,北京100076 [2]北京建筑大学,北京100044 [3]北京空间飞行器总体设计部空间热控技术北京市重点实验室,北京100094 [4]北京空间机电研究所,北京100094
出 处:《遥测遥控》2019年第5期47-55,共9页Journal of Telemetry,Tracking and Command
基 金:航天预研项目
摘 要:针对某车载机箱的散热需求,根据发热器件的热流密度确定了强迫风冷的散热形式,并对机箱进行了详细的散热设计和结构改造。为了验证和改进散热设计,利用DM和Icepak对原始模型进行了简化处理,并计算得出了印制板各向热导率,并通过RSO驱动Icepak对散热器的肋片数量和肋片厚度进行参数化仿真。最后得出并分析了散热器重量和印制板最高温度的变化规律,从而确定了最优设计方案。设计方案不仅满足了该车载机箱的散热需求,同时降低了产品的重量和成本,对风冷散热设计具有一定的参考价值和指导意义。Aiming at the heat dissipation requirement of a certain vehicle-mounted chassis,this paper chooses the forced air cooling form and carries out detailed thermal design and structure retrofitting according to the heat flux of heating devices.In order to verify and improve the heat dissipation method,original model is simplified with DM and Icepak,and the anisotropic thermal conductivity of PCB is calculated out.After that,the fin count and thickness are chosen for parametric design simulation which is conducted with RSO driving Icepak.The variations of the heat sink weight and the maximum temperature in PCB are obtained and discussed,and the optimal solution is determined based on the simulation results.This thermal design can not only meet the heat dissipation requirement,but reduce the weight and cost of this vehicle-mounted chassis,and it could provide some reference and guidance for air cooling design.
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