Testing system and method of thermoelectric module

Abstract

The invention provides a testing system and a testing method of a thermoelectric module. The testing system comprises an electrical property testing unit, a thermal flux detecting unit and a processor; the electrical property testing unit is electrically connected with the thermoelectric module at the power generation operation state so as to test the output power of the thermoelectric module as well as current and internal resistance during the operation with the output power; the thermal flux detecting unit comprises a heat flux sensor which is arranged at the cold end of the thermoelectric module and is used for detecting the heat flux of the cold end of the thermoelectric module; the processor is electrically connected with the electrical property testing unit so as to receive information detected by the electrical property testing unit; the processor is electrically connected with the heat flux detecting unit so as to receive the heat flux Qc1 of the cold end of the thermoelectric module, which is detected by the flux testing unit, and is used for calculating the thermoelectric conversion efficiency of the thermoelectric module according to the formula Eta=P / (Qc1+P-1 / 2I2R). By adopting the technical scheme provided by the invention, the thermoelectric conversion efficiency of the thermoelectric module is detected.

Description

technical field [0001] The invention relates to the field of thermoelectric module testing, and more specifically, to a thermoelectric module testing system and a thermoelectric module testing method. Background technique [0002] Existing test systems generally can only test the electrical output performance of the thermoelectric module under a certain temperature condition, but cannot obtain the thermoelectric conversion efficiency. [0003] The mechanical pressure when the thermoelectric module is fixed may affect its performance, and the most suitable pressure conditions for different thermoelectric modules are generally different. This is an important but often overlooked factor in testing. Existing test setups are usually fixed clamping force. [0004] The parallelism of the upper and lower contact surfaces of the thermoelectric module will have a great impact on the quality of the thermal contact, which will determine the accuracy of the temperature test results. E...

AI Technical Summary

Problems solved by technology

[0005] Existing test devices are generally water-cooled, and the lowest test temperature at the cold end can only be controlled at about 10 degrees above room temperature.

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