激光能量传输用砷化镓电池温控技术研究

Research on Thermal Control Technology of GaAs Cell Used in Laser Energy Transmission

激光能量传输是能量无线传输的一种方式,研究了激光能量传输的能源转换端砷化镓电池的温控技术,通过COMSOL多物理场仿真软件结合试验测试方法,对比了封装电池片自然散热、翅片、加翅片和风扇方式,在1 W热源情况下仿真结果显示砷化镓电池片温度分别为153.4℃,46.8℃,39.4℃。另外,研究了热管对砷化镓电池散热效果,测试了激光无线传能的光电转换效率,研究发现通过温控技术,能有效降低激光光伏电池工作温度,大幅提升激光光伏电池的光电转换效率,在激光功率1.4 W时,达到59%,高出不经温控时的7.3%;当功率为6.2 W时,热管散热情况为55.9%,提高了不加温控技术时的18.9%。

Laser energy transmission is one way of wireless energy transmission,and the thermal control technology of GaAs cell used in laser energy transmission was researched in this paper.COMSOL multiphysics and experiment test were used to discuss the heat dissipation results by natural cooling radiator,fin type radiator,and fin⁃air forced type radiator.The temperature of GaAs cell was 153.4℃、46.8℃、39.4℃at the condition of 1 W heat source sink with the stimulation.What’more,heat pipe was used to cool the heat of GaAs cell,and photovoltaic conversion efficiency of this laser energy transmission system was tested,which showed the value of photovoltaic conversion efficiency can be increased with the temperature of GaAs cell reduced by thermal control technology.The value of photovoltaic conversion efficiency was 59%at the power of laser 1.4 W with heat pipe radiator,which was higher 7.3%than that of with natural cooling radiator.When the power of laser was 6.2 W,the value was 55.9%,which was higher 18.9%than that of with natural cooling radiator.