Color photovoltaic module and preparation method thereof

Abstract

The invention discloses a color photovoltaic module and a preparation method thereof. The color photovoltaic module comprises a lamination structure which is formed by laminating a first packaging part, a first packaging adhesive film layer, a solar cell string and a second packaging part. The first packaging part comprises a transparent film layer which is prepared from a color thermoplastic high-molecular polymer, and the relative molecular mass of the color thermoplastic high-molecular polymer is greater than 20000. The color photovoltaic module costs low and is light. Under the premise that the technical standard requirements for ultraviolet resistance, aging resistance, impact resistance, fire prevention and insulation resistance in the photovoltaic industry are satisfied, the packaging material of the photovoltaic module is light, the installation cost of the photovoltaic module is reduced on the whole, and the photovoltaic module is very suitable for large-scale promotion and application in the field of photovoltaic building materials. Moreover, the appearance color of the photovoltaic module can be freely selected and changed, and the photovoltaic module looks more beautiful.

Description

technical field [0001] The invention belongs to the photovoltaic field, and in particular relates to a colored photovoltaic module, and also relates to a preparation method of the colored photovoltaic module. Background technique [0002] In the current society, energy conflicts and environmental problems are becoming more and more prominent, and the development of various types of clean energy is an inevitable trend. In recent years, the photovoltaic industry has developed rapidly, and technological updates have been gradually accelerated. At present, the photovoltaic industry is developing towards product diversification, and building photovoltaics is one of the most important markets in the field of photovoltaic power generation applications in the world. [0003] The color of the mainstream solar cells in the prior art is dark blue. After the components are packaged, because the EVA layer and the tempered glass layer are superimposed, the overall display of the photovolt...

AI Technical Summary

Problems solved by technology

[0004] In order to meet the market demand for photovoltaic modules with different colors, some technical solutions have been disclosed for the production of colored photovoltaic modules. The active layer on the electrode layer and the filter layer arranged on the active layer, due to the patented technology, the filter layer is set in the active layer, and the filter layer modulates the reflected light on the battery surface in a narrow band in the full color gamut, so that the battery surface appears Different colors, the process conditions of this technical solution are very complicated, only exist in laboratory research, and it is difficult to industrialize at present

[0005] For example, the Chinese utility model patent with the publication number CN203536452U discloses a color solar cell module, which includes a transparent surface layer, a photovoltaic cell sheet and a back sheet laminated on top and bottom planes in sequence. The transparent surface layer is made of a colored epoxy resin layer, and then the thermosetting The color epoxy resin layer has insufficient weather resistance. Even if the surface of the color epoxy resin layer is coated with fluoroplastic coating, there are still disadvantages such as insufficient weather resistance and high cost.

[0006] For example, the Chinese utility model patent with the publication number CN205050850U discloses a color photovoltaic module. Specifically, a film layer with a characteristic color is provided on the front surface of the ribbon body of the solar cell string, and at the same time, the transparent adhesive layer and the transparent front plate can View the film layer with characteristic color, and then realize the selectivity of the color of the photovoltaic module; because this technology only achieves the color effect by setting the color film layer on the ribbon, it is very limited, and the process steps of this method are cumbersome , low efficiency, not suitable for popularization and application, and still use transparent glass front plate, heavy weight, not conducive to the installation and construction of photovoltaic modules

[0007] Another example is the Chinese utility model patent with the publication number CN203967102U disclosing a color solar cell module, the front of the solar cell is covered with a layer of transparent active color-developing film, and the transparent active color-developing film includes a plurality of transparent LED or OLED light-emitting elements. Control the driving voltage to control the luminous color of multiple transparent LEDs or OLEDs, but there will be color distortion and defects caused by LED or OLED light attenuation, and the power generation efficiency will be reduced due to temperature rise during the working process of LEDs or OLEDs.

[0008] Another example is that Chinese patents such as CN203347123U, CN103367549B, and CN102790124A all disclose color solar cell components, and all adopt colored solar cells, but the manufacturing process of colored solar cells is complicated and the cost is high, so it is difficult to popularize and use them on a large scale.

Not only that, because the color solar cell modules disclosed in the above-mentioned patents all use traditional toughened glass as the packaging material, there are still disadvantages such as heavy weight, labor-intensive installation, and difficulty in implementation.

[0009] like figure 1 As shown, the laminated structure of the existing typical color photovoltaic modules (usually also called laminates) is made by sequentially combining ultra-clear tempered patterned glass 21, the first EVA film 22, the color solar cell string 23, the second EVA film 24 and the back plate 25 are superimposed and laminated, among which: the density of the ultra-clear tempered patterned glass reaches 2.5g / cm 3 , and its common thickness is 3.2mm, so the weight of the tempered glass glass is as high as 8Kg per square meter. The photovoltaic modules assembled by the laminated structure of the photovoltaic modules are usually of high quality, and their weight reaches more than 10Kg per square meter. Then install the supporting structure, the weight of the photovoltaic module per square meter is at least 12Kg or more. When it is applied to the top of the building or the wall, etc., it puts forward higher requirements for the supporting structure of the photovoltaic module, which increases the difficulty of engineering construction and The cost of installation is specifically manifested in: during the installation process on the top of the building or on the wall, there are heavy weights, labor-intensive installation, and difficult implementation; especially in some occasions, due to the limitation of building load-bearing loads, it is impossible to install photovoltaic modules

[0010] Therefore, the market urgently needs to find a way to solve the problems of heavy weight and high cost of packaging materials in existing color photovoltaic modules, and at the same time meet the requirements of photovoltaic industry technical standards such as anti-ultraviolet, anti-aging, impact resistance, fire prevention, and insulation resistance. , and can effectively realize the free choice and transformation of the appearance color of photovoltaic modules, and enhance the aesthetics of photovoltaic modules

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