Liquid metal-cooling cascading semiconductor thermoelectric power generation device

Abstract

The invention relates to a cascading semiconductor thermoelectric power generation device cooled by liquid metal, comprising a cascading semiconductor thermoelectric power generation module and a liquid metal radiator positioned at one side of the module, wherein the liquid metal radiator comprises heat conduction plain films directly touching with the low-temperature end of the power generation module and an electromagnetic pump installed in a conduit in the substrate of the electromagnetic pump. The electromagnetic pump is composed of a pair of permanent magnetic sheets laid on the upper surface and the lower surface of the substrate of the electromagnetic pump and a pair of electrode plates installed on the two opposite walls of the conduit in the substrate of the electromagnetic pump. The planes of the electrode plates are vertical to the planes of the permanent magnetic sheets, and the lead wires of the electrode plates are electrically connected with batteries. Flowing liquid metal are filled in the hollow channels in the communicated heat conduction plain films, the conduit in the substrate of the electromagnetic pump and the hollow channel in the heat dissipation substrate of the fin-type radiator. The power generation device is a self-maintenance adaptive type high-efficiency low-grade thermal power generation device without a moving part and has the advantages of simple structure, high reliability, convenient maintenance, low noise, energy saving and environmental protection.

Description

technical field [0001] The invention relates to a thermoelectric power generation device, in particular to a cascaded semiconductor thermoelectric power generation device cooled by liquid metal. Background technique [0002] At present, due to energy shortage, the utilization of low-grade energy such as factory waste heat and automobile exhaust heat, as well as renewable energy such as solar energy and wind energy, has received unprecedented attention. However, there are still many technical obstacles restricting its large-scale practical application. One of the most critical links is the development of a highly efficient, economical, and self-sufficient energy generation system. [0003] Under the action of residual heat or solar radiation, the object will generate a corresponding temperature gradient between the heated surface and the back heated surface; it is very meaningful to efficiently use this part of the free temperature gradient to generate electricity. In this r...

AI Technical Summary

Problems solved by technology

However, thermoelectric power generation technology has been neglected for a long time, mainly due to low efficiency and low yield.

Usually, it is not easy to maintain a specific temperature gradient on both sides of the semiconductor thermoelectric element, that is, even under the action of high heat flow, if the two sides of the semiconductor thermoelectric element do not take reasonable heat dissipation, it is difficult to achieve the ideal power generation temperature level and temperature difference

In response to this problem, traditional air cooling or liquid cooling is not very convenient to achieve this goal

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