中文摘要：

建立了温差发电器件的数学模型,通过理论分析与推导得到了经过优化后的热电臂尺寸结构使温差发电器达到最大转换效率。采用数值模拟方法比较了传统式和尺寸优化式温差发电器件的电学性能。结果表明：相对于传统式结构,尺寸优化式结构的输出电压、输出功和效率均会呈现出不同程度的提高;输出电压随外阻的增加而增加,输出功和转换效率随外阻的增加呈现出先增大后减小的趋势。

英文摘要：

A mathematical model of thermoelectric generator （TEG） was established to get dimensional optimized arm to achieve the maximmn conversion efficiency by the theoretical analysis. Then, numerical simulation was used to compare the electrical properties between traditional TEG and the dimensional optimized TEG. The experimental results show that with respect to the traditional structure,the output voltage, the output power,and the efficiency of the dimensional opti mized TEG all increase more or less. The output voltage increases with the increasing external resistance,and the output power and energy conversion efficiency increase first and then decrease with the increasing external resistance.