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
陈永华 1酒晨霄 2张文斌 1吴文东1
作者信息
- 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
- 折叠
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%.
Abstract
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Key words
liquid metals/self-driving/thermoelectric conversion/heat dissipation/high-power devices引用本文复制引用
基金项目
中国航空工业集团公司西安飞行自动控制研究所项目(HZ2023K0074A)
出版年
2024
NETL
NSTL
万方数据