Fully-optimized photovoltaic and optothermal cogeneration module

Abstract

The invention provides a fully-optimized photovoltaic and optothermal cogeneration module, comprising glass plates, a first plastic package layer, an ultraviolet light absorbing layer, a solar cell plate, a second plastic package layer, a bearing plate, a heat collection part and a housing, wherein the glass plates are sequentially overlapped, the first plastic package layer is used for packagingthe front of the solar cell plate, the ultraviolet light absorbing layer and the solar cell plate are arranged on the first plastic package layer, the second plastic package layer is used for packaging the back of the solar cell plate, the bearing plate and the heat collection part are used for bearing the solar cell plate, and the housing is used for sealing edges and preserving heat; a heat preservation cavity layer is arranged between the glass plates and the first plastic package layer and is used for preventing thermal energy from being lost from a light-facing surface through the glass plates; the heat preservation cavity layer is a vacuum layer or is filled with gas for heat preservation. The heat preservation cavity layer is arranged for preventing heat from being lost from the front of the module, thus being beneficial to improvement of heat-collecting efficiency of the module. Plastic is used for replacing tempered glass in the prior art as package layers of the solar cell plate, so that the total weight of the module is also effectively reduced while the solar cell plate is protected from moisture and oxygen damage and failure.

Description

technical field [0001] The invention relates to the technical field of solar photovoltaic photothermal equipment, in particular to a fully optimized photovoltaic photothermal cogeneration assembly. Background technique [0002] Photovoltaic power generation technology is a technology that uses solar photovoltaic modules to directly convert solar energy into electrical energy. Since the development in the 1950s, although the photoelectric conversion efficiency of solar photovoltaic modules is generally low, it has also increased year by year. In 2017, the photoelectric conversion efficiency of 85 GW of newly installed solar photovoltaic modules in the world was 15-18%. The above data reflect the fact that most of the absorbed solar energy is converted into heat energy and dissipated. However, heat energy will cause the photovoltaic module to heat up and the efficiency of the cell to decrease. For example, the temperature of the crystalline silicon photovoltaic module can incr...

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Problems solved by technology

[0003] The purpose of the existing photovoltaic thermal cogeneration module design is to suppress the photovoltaic operating temperature and optimize the photovoltaic power generation efficiency by outputting the heat energy generated by the photovoltaic module under sunlight. It is because the design does not take into account the heat loss from the light-facing surface of the photovoltaic module

For example, the two patents with the patent publication numbers CN203722577U and CN205723571U each provide a photovoltaic combined heat and heat assembly. Both of the two photovoltaic heat and heat combined supply assemblies are equipped with heat collecting components on the back of the solar cells to collect heat and provide The solar cell cools down, but most of the heat energy is lost from the facing surface of the photovoltaic module during use, resulting in a significant reduction in heat collection efficiency

[0004] And in the patent with the patent publication number CN205723571U, the photovoltaic solar thermal cogeneration module includes three glass plates. According to the patent description and the photovoltaic market, 3.2mm glass plates are generally used for estimation, and three glass plates are used to form the photovoltaic solar thermal integrated module. The total weight per square meter should be about 27 to 35 kilograms, and it is technically difficult to carry the load during installation and after installation

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