BiTe-based flexible film thermoelectric cell

Abstract

The invention relates to a BiTe-based flexible film thermoelectric cell. The cell comprises a cold end insulation substrate, a plurality of cold end conducting layers and two cold end conducting layer output ports from bottom to top. One N-type thermoelectricity monomer and one P-type thermoelectricity monomer are arranged on each cold end conducting layer. A hot end conducting layer and a hot surface insulating layer are arranged. A cold and hot end conducting interlayer insulating layer is arranged between each N-type thermoelectricity monomer and the adjacent P-type thermoelectricity monomer. The cell is characterized in that the cold end insulation substrate and the hot surface insulating layer are a polyimide film; and a thickness of each layer is a micron-grade film. In the invention, the polyimide film with a micron-grade thickness is selected to manufacture the cold end insulation substrate and the hot surface insulating layer; each layer manufactured between the cold end insulation substrate and the hot surface insulating layer is with the micron-grade thickness; the cold and hot end conducting interlayer insulating layer is arranged between each N-type thermoelectricity monomer and the adjacent P-type thermoelectricity monomer so that flexibility and an integration level of the cell are effectively increased and cell power output performance is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of thermoelectricity, in particular to a BiTe-based flexible film thermoelectric battery. Background technique [0002] Thermoelectric battery is a solid-state energy conversion device that uses the Seebeck effect of thermoelectric materials to directly convert heat energy into electrical energy. It is composed of P-N thermoelectric elements. Harsh environment and other advantages, it has broad application prospects in fields such as space exploration, deep sea exploration, medicine, and polar safety protection. [0003] In order to further highlight the advantages of the thermoelectric battery and make the battery have good flexibility, technical personnel in the field have carried out a lot of research and development. The thermoelectric battery with a three-dimensional structure and a square block in the past has been developed into a quasi-two-dimensional thin film structure, which can significantly enha...

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Problems solved by technology

But its disadvantage is: the battery made by this invention patent has only one P-N junction, not only the integration of the battery is low, but also because the resistance of the thin film battery itself is very large, the electric power of the flexible thin film thermoelectric battery made by this method can only reach nanometer Watt level

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