冷源结构对汽车尾气热电转换装置性能的影响

为了最大化建立汽车尾气热电转换装置的温差，在相同热源条件下通过测试整体式、单列式和独立式3种冷源结构下不同发动机负荷时的开路电压和最大输出功率，分析了3种冷源结构对系统输出性能的影响.结果表明：优化冷源结构可以明显提高汽车尾气热电转换装置的性能；独立式冷源结构的效果最好，单列式其次，整体式最差；单个热电器件的冷面采用独立式的小型化冷源结构可以保证它们之间有更好的接触和更大的温差.

The Effect of Cooling Structure on the Output Performance of Automobile Exhaust Thermoelectric Generator

To maximize the temperature difference of automobile exhaust thermoelectric generator(AETEG), based on the same hot source and different loads of engine, the open circuit voltage and maximum power of AETEG with unitary, single column and independent cold source structure were experimented, the effect of those different cold source structures on the output performance of AETEG was compared and analyzed. The results indicate that the output performance can be greatly enhanced with the optimized cold source structure, the effect of independent cold source structure is the most superior, single column cold source structure takes the second place, while the unitary cold source structure is the worst, the contact between the cold side of single thermoelectric module and its corresponding cold source is tighter, and the temperature difference is much larger when cold source structure is of independent miniaturization.