用于星载高功率电子设备的增材制造平板热管设计与验证  

Design and Verification on Additive Manufacturing Vapor Chamber for High-power Spaceborne Electronic Devices

作　　者：徐亚威 黄金印[1] 张万明 张红星[1] 苗建印[1] XU Yawei;HUANG Jinyin;ZHANG Wanming;ZHANG Hongxing;MIAO Jianyin(National Key Laboratory of Spacecraft Thermal Control,Beijing Institute of Spacecraft System Engineering,Beijing 100094,China;Beijing Institute of Spacecraft System Engineering,Beijing 100094,China)

机构地区：[1]北京空间飞行器总体设计部航天器热控全国重点实验室,北京100094 [2]北京空间飞行器总体设计部,北京100094

出　　处：《航天器工程》2024年第4期137-143,共7页Spacecraft Engineering

摘　　要：针对未来星载高功率电子设备大功率、高热流、高集成的散热需求,解决传统槽道或丝网毛细芯平板热管逆重力传热量小、极限热流密度低的问题,文章提出了一种基于增材制造技术的新型平板热管,利用增材制造技术在成型复杂构型方面的优点,设计出一种基于复合毛细芯的平板热管构型,采用扫描电子显微镜(SEM)和显微断层扫描(MicroCT)对毛细芯微结构进行分析,结果表明:毛细芯结构成型完整、孔隙分布均匀。传热性能试验结果显示:二维平板热管极限热流密度高达88 W/cm~2,传热热阻仅为0.024℃/W,三维平板热管在不同姿态下传热能力和传热热阻变化显著,相关数据可为星载高功率电子设备热控设计和验证提供参考。The future spaceborne high-power electronic devices exhibit characteristics of high power,high thermal flux and high integration.This paper introduces a novel vapor chamber based on additive manufacturing(AM)technology to solve the problems of poor anti-gravity capability and low ultimate heat flux density due to the inferior property of traditional groove wick or mesh wick.By leveraging the advantages of AM in forming complex geometries,a vapor chamber configuration based on composite capillary wick is designed.The microstructure has been analyzed using SEM(Scanning Electron Microscopy)and Micro-CT(Micro-Computed Tomography).The results indicate that a continuous,interconnected porous structure is obtained.The thermal performance tests show that 3D printed capillary wick can significantly enhance the heat transfer capability and ultimate heat flux density of vapor chamber.The 2D vapor chamber can accommodate a heat flux density of 88W/cm 2 with a thermal resistance of only 0.024℃/W.The 3D vapor chamber exhibits significant changes in thermal resistance under different orientations.Relevant data can provide guidance for the thermal design and experiment of spaceborne high-power electronic equipment.

关 键 词：卫星 增材制造 复合毛细芯 平板热管 

分 类 号：V476.2[航空宇航科学与技术—飞行器设计]