Thermoelectric generator

Abstract

The invention discloses a thermoelectric generator, which comprises a plurality of cooling passages, a hot flow passage, a plurality of heat conduction plates and a plurality of thermoelectric power generation pieces, wherein each heat conduction plate penetrates through the hot flow passage to longitudinally separate the hot flow passage, the corresponding heat conduction plate in the hot flow passage is an inner fin, the corresponding heat conduction plate at the exterior of the hot flow passage is an outer fin, each cooling passage is arranged between the two corresponding outer fins, each thermoelectric power generation piece is arranged between the corresponding outer fin and the corresponding cooling passage, the thermoelectric power generation pieces are electrically connected, and then positive electrodes and negative electrodes are led out by conducting wires. The thermoelectric generator has the advantages that the hot flow passage and the cooling passages through which a heat source passes are arranged in a longitudinal and transverse stereo way, and the thermoelectric power generation pieces are simultaneously in contact with the hot flow passage and the cooling passages, and are positioned at different sides of a thermoelectric power generation assembly, so the thermoelectric power generation function is realized; the energy of the heat source is sufficiently utilized, the output power is increased, and the cost is reduced; the thermoelectric generator can be applied to compact thermoelectric conversion devices, and the requirement of higher-power density is met.

Description

technical field [0001] The invention relates to the field of energy technology, in particular to a thermoelectric generator. Background technique [0002] Thermoelectric generators are based on three physical effects related to thermoelectric conversion. Thermoelectric electrodes made of thermoelectric materials are used to directly convert thermal energy into electrical energy by using the temperature difference in the circuit. The efficiency of thermoelectric conversion depends on the performance of the material of the thermode, the temperature difference formation and the performance of the control system. The latter depends on the form of heat source and cold source, heat transfer method, heat exchanger structure, circuit connection form and control. [0003] Existing thermoelectric heat exchangers can be mainly divided into flat plate type, cylindrical type, ring plate type, etc. according to their shapes. Power is limited. Contents of the invention [0004] Based o...

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Problems solved by technology

[0003] Existing thermoelectric heat exchangers can be mainly divided into flat plate type, cylindrical type, and ring fin type according to their shapes. The heating area and cooling area of ​​the above-mentioned thermoelectric heat exchangers are the same, the structure is loose, and the heat source cannot be fully utilized. limited power

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