中文摘要：

空间近日等强辐照造成的高温严重影响光伏电池的转化效率,同时造成辐射能量的浪费。以单晶Si光伏电池和Bi2Te3热电电池为基本单元,构建Si-Bi2Te3光热耦合电源器件模型。采用有限元分析法分析特定辐射条件下Si-Bi2Te3光热耦合电源器件的热分布情况,并结合光伏电池与热电电池的温度特性进一步计算了器件的转化效率。结果显示,Bi2Te3热电池的存在一定程度上降低了Si光伏电池的工作温度,在空间环境下Si-Bi2Te3光热耦合电源器件的转化效率相对于单一的Si光伏电池有2%~3%的提高。最后讨论了该器件Si光伏电池和Bi2Te3热电池的功率输出方式。

英文摘要：

The conversion efficiencies of photovoltaic cells were serious depressed at elevated temperatures under high solar radiation in space,also causing radiation energy waste. A model of Si-Bi2Te3 photovoltaic thermoelectric coupling power device was built based on Si photovoltaic cell and Bi2Te3 thermoelectric cell. The thermal distribution of Si-Bi2Te3 thermal coupling power devices with specific radiation conditions were analyzed by finite element analysis method. And the conversion efficiency of the devices was further calculated according to the temperature performance of the photovoltaic cell and the thermoelectric cell. The results indicate that the working temperature of Si photovoltaic cells could be lowered when Bi2Te3 thermoelectric cells are coupled into the device. And the conversion efficiency of Si-Bi2Te3 photovoltaic thermoelectric coupling power device is 2%-3% higher than single Si photovoltaic cell in space environment. Finally,the power output mode of the Si-Bi2Te3 photovoltaic thermoelectric coupling power devices was discussed.