Thermoelectric modules and thermoelectric generators

Abstract

The invention provides a thermoelectric module and a thermoelectric generator. The thermoelectric module includes: a thermoelectric arm, including alternately arranged P-type thermoelectric arms and N-type thermoelectric arms, and each P-type thermoelectric arm and each N-type thermoelectric arm are connected in series; an electrode, including a first electrode connected to the low-temperature end of the thermoelectric arm. electrode, and a second electrode connected to the high-temperature end of the thermoelectric arm. The second electrode is embedded with a flexible conductive material, and the high-temperature end of the thermoelectric arm is cooperatively connected to the flexible conductive material. In the present invention, a flexible conductive material is embedded inside the second electrode, and the high-temperature end of the thermoelectric arm is cooperatively connected with the flexible conductive material, thereby alleviating the problem caused by mismatch of high-temperature thermal expansion coefficient without affecting the electrical contact performance. Thermal Stress. Furthermore, the present invention achieves a radiation shielding effect by extending the welding tab, which significantly reduces the radiation heat transfer without basically increasing the cost or process difficulty, and does not significantly affect the temperature distribution between the transverse thermoelectric arms.

Description

technical field [0001] The invention relates to the field of thermoelectricity, in particular to a thermoelectric module and a thermoelectric generator. Background technique [0002] Thermoelectric devices refer to a type of electronic components that can directly realize the mutual conversion of electric energy and thermal energy. Its core is a thermoelectric module composed of multiple groups of thermoelectric materials with different carrier types connected in series and parallel. The application of thermoelectric devices has a history of more than one hundred years. In the early days, they were mainly used to detect temperature, such as thermocouples. Later, with the development of high-performance thermoelectric materials, they were used in electronic temperature control, waste heat power generation and aerospace battery packs and other fields. In the past 20 years, the miniaturization technology of thermoelectric modules has received more and more attention because of...

AI Technical Summary

Problems solved by technology

[0007] The main purpose of the present invention is to provide a thermoelectric module and a thermoelectric generator to solve the problem in the prior art that the connection between the thermoelectric material at the high temperature end and the electrode is prone to failure

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