Solar photovoltaic and photo-thermal integrated device

By designing a zigzag partition and a thermal transition layer in the photovoltaic photothermal integrated device, the problem of reducing photoelectric conversion efficiency caused by the increase in the photovoltaic plate temperature is solved, and efficient heat recovery and photoelectric conversion are achieved, which is suitable for household hot water supply.

CN120357845APending Publication Date: 2025-07-22HUNAN RED SOLAR NEW ENERGY SCI & TECH CO LTD
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Patent Information

Application Number
CN202510557221.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-04-29
Publication Date
2025-07-22

AI Technical Summary

Technical Problem

The temperature of traditional photovoltaic panels increases under light, resulting in a significant reduction in the photoelectric conversion efficiency. The existing photovoltaic photothermal integrated components have problems such as large thermal resistance, poor thermal conductivity, slow heat transfer and low thermal energy recovery.

Method used

A solar photovoltaic integrated photovoltaic device is designed, including a photovoltaic layer, a thermal transition layer, a photothermal conversion layer and a thermal insulation layer stacked from top to bottom. A zigzag partition is provided inside the photothermal conversion layer, a heat exchange working fluid is passed into the runner, and the closed cavity is filled with insulating gas. The polymer back plate is replaced by a thermal transition layer to achieve integrated production and improve thermal conductivity.

Benefits of technology

It has achieved compact structure, good thermal conductivity, high photoelectric conversion efficiency, stable water outlet temperature between 50℃ and 70℃, meeting household hot water needs, longer service life, and wide application range.

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Abstract

The invention discloses a solar photovoltaic and photo-thermal integrated device which comprises a photovoltaic layer, a heat conduction transition layer, a photo-thermal conversion layer and a heat preservation layer which are sequentially stacked from top to bottom. A sawtooth-shaped partition plate is arranged in the photothermal conversion layer; a flow channel is defined by the front face of the partition plate and the heat conduction transition layer, and a heat exchange working medium is introduced into the flow channel so as to absorb heat generated by the photovoltaic layer. A closed cavity is defined by the back face of the partition plate and the heat preservation layer and filled with heat insulation gas. The device has the advantages of being compact in structure, good in heat conduction effect, high in photoelectric conversion efficiency and the like, heat generated by a photovoltaic layer can be absorbed to the maximum extent, heat of a working medium in a flow channel can be dissipated to the minimum extent, the water outlet temperature can be stabilized within the range of 50-70 DEG C, and the household hot water requirement is met.
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