摘要
随着空间探测需求提高,卫星载荷增加,设备精密程度提高,要求热控技术具备更高的控制精度和响应速度,同时消耗更少的重量、功率资源。本文提出一种基于热智能材料的智能热控技术,利用热智能材料热导率可智能调控的特点实现对被控对象与外界从隔热到良好导热的自主调控,响应速度在毫秒量级,可精确调控被控对象温度并显著降低资源消耗。文中基于大功率锂离子蓄电池的在轨热分析结果研究了该智能热控技术的应用效果,结果表明采用智能热控部件可实现对蓄电池的自适应控制并改善温度均匀性,同时加热器功率需求降低15%以上。
With the increasing of space exploration demands, the payload of satellite and precision of the equipment increase, which requires the thermal control technology to have higher control precision and response speed, consuming less weight and power resources. In this paper, a smart thermal control technology based on the thermal smart material, whose thermal conductivity can be smartly controlled, is presented. With the technology, the heat transfer relationship between the controlled object and the external environment can be regulated automatically from heat insulation to good heat conduction with the response speed of milliseconds, so that the temperature of the object can be accurately controlled and the resource consumption can be significantly reduced. The advantage of the smart thermal control technology is explored based on the on-orbit thermal analysis of the satellite lithium ion battery. The results show that the self-adaptive control of the battery is realized by using the smart thermal control technology. Meanwhile, the temperature uniformity is improved while the heater power demand is reduced by more than 15%.
作者
胡帼杰
曹桂兴
乔德山
曹炳阳
HU Guo-Jie;CAO Gui-Xing;QIAO De-Shang;CAO Bing-Yang(Institute of Telecommunication Satellite, China Academy of Space Technology, Beijing 100094, China;Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China)
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2019年第6期1380-1388,共9页
Journal of Engineering Thermophysics
基金
国家自然科学基金(No.51676108)
关键词
卫星热控技术
热智能材料
智能热控
有限元分析
thermal control technology
thermal smart material
smart thermal control
finite element analysis
