大功率电子器件的自驱动散热系统技术研究  

Research on self-driven heat dissipation system technology for high power electronic devices

作　　者：陈永华 酒晨霄 张文斌[1] 吴文东 CHEN Yonghua;JIU Chenxiao;ZHANG Wenbin;WU Wendong(Faculty of Mechanical and Electrical Engineering,Kunming University of Science and Technology,Kunming 650504,China;Xi’an Institute of Flight Automatic Control,Aviation Industry Corporation of China,Xi’an 710076,China)

机构地区：[1]昆明理工大学机电工程学院,昆明650504 [2]中国航空工业集团公司西安飞行自动控制研究所,西安710076

出　　处：《兵器装备工程学报》2024年第9期307-313,共7页Journal of Ordnance Equipment Engineering

基　　金：中国航空工业集团公司西安飞行自动控制研究所项目(HZ2023K0074A)。

摘　　要：针对武器装备中的电池组、电子设备、电机等大功率发热器件在运行过程中会产生大量热能影响其工作效率的问题,优化设计了一种自驱动散热系统,该系统以液态镓合金作为介质,通过热电转换的方式对产生的废热进行回收利用,从而驱动液态金属的泵以实现大功率器件的高效散热。通过对该系统进行仿真和实验分析,结果表明系统在温差达到30℃时,热电模块输出0.12 W驱使泵进入工作状态,模拟发热源的温度下降了7.6℃。当温差增至90℃时,输出电能1.1 W,液态金属在系统中的流速达到0.31 m/s,热源温度降至36.2℃。本系统的散热在无外界供能和控制的前提下,实现散热的自启动,散热效率较于自然冷却提升了116%。Aiming at the problem that high-power heat-generating devices such as battery packs,electronic devices and motors in weapons and equipment generate a lot of heat energy during operation,a self-driven heat dissipation system is optimally designed,which takes liquid gallium alloy as the medium,recycles the waste heat generated by means of thermoelectric conversion,and then drives the pump of the liquid metal in order to achieve the high efficiency of heat dissipation of the high-power devices.Through the simulation and experimental analysis of the system,the results show that the system in the temperature difference of 30℃,the output of the thermoelectric module 0.12 W to drive the pump into the working state,the simulation of the temperature of the heat source decreased by 7.6℃.When the temperature difference increases to 90℃,the output power 1.1 W,liquid metal in the system flow rate of 0.31 m/s,the temperature of the heat source down to 36.2℃.The heat dissipation of this system is self-starting without external energy supply and control,and the heat dissipation efficiency is 116%higher than that of natural cooling.

关 键 词：液态金属 自驱动 热电转换 散热 大功率器件 

分 类 号：TK115[动力工程及工程热物理—热能工程]