Photovoltaic assembly, lamination structure thereof and preparation method of lamination structure

Abstract

The invention discloses a photovoltaic assembly, a lamination structure thereof and a preparation method of the lamination structure. The lamination structure comprises first and second packaging layers, the first packaging layer is prepared from 30-50 parts of fiber cloth and 50-70 parts of a first packaging powdery paint by weight, and the first packaging powdery paint coats the fiber cloth uniformly; the second packaging layer is prepared from 30-50 parts of fiber cloth and 50-70 parts of a second packaging powdery paint by weight, and the second packaging powdery paint coats the fiber cloth uniformly; and the first packaging powdery paint includes a acrylic acid powdery paint or an extra-weather-proof polyester powdery paint, and the second packaging powdery paint includes extra-weather-proof polyester powdery paint. According to the invention, the cost is low, the packaging material of the photovoltaic assembly is light on the premise that technical requirements for anti-ultraviolet, age-proof, impact-resistant, fireproof and insulation performances in the photovoltaic industry are met, and the structure and assembly can be popularized and applied widely in the photovoltaic field.

Description

technical field [0001] The invention belongs to the photovoltaic field, and in particular relates to a laminated structure of a photovoltaic module and a preparation method thereof, and also relates to a photovoltaic module using the laminated structure. 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. The research and development of various functional components with high reliability, high power and low installation cost has become a direction for the development of photovoltaic components. [0003] Solar photovoltaic power generation relies on solar cells to convert light energy directly into electricity. ...

AI Technical Summary

Problems solved by technology

[0004] As a packaging material used in the photovoltaic field, it is required to have anti-ultraviolet, anti-aging and other properties, such as figure 1 As shown, the existing typical laminated structure of photovoltaic modules (also called laminates) is made by sequentially combining ultra-clear tempered patterned glass 21, first EVA film 22, solar cell string 23, second EVA film 24 and The back panel is laminated by 25 layers, among which: the density of ultra-clear tempered embossed 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

At the same time, the existing photovoltaic module packaging structure has a single appearance and is not easy to change to meet the requirements of different architectural appearances.

[0005] At present, there are some technical solutions that try to solve the problem of lightweight photovoltaic modules by changing the packaging materials, that is, using high-transmittance films and transparent backplanes instead of tempered glass. Most of the boards only use EVA, POE and other adhesive films. Such encapsulated photovoltaic modules cannot meet the technical standards of the photovoltaic industry in terms of impact resistance and fire resistance.

[0006] There are also some technical solutions disclosed for reducing the weight of photovoltaic modules. For example, the Chinese invention patent with the publication number CN102516852A discloses a weather-resistant, high-t

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