High-efficiency solar packaging film

A solar energy encapsulation and high-efficiency technology, applied in the direction of adhesives, film/sheet adhesives, non-polymer adhesive additives, etc., can solve the problems of increasing the cost of solar cell components, unsatisfactory photoelectric conversion efficiency, and poor use effect Ideal and other issues, to achieve the effect of improving photoelectric conversion efficiency, reducing requirements, and avoiding damage

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AI Technical Summary

Problems solved by technology

The photoelectric conversion efficiency of existing solar cell modules is not ideal, and because the existing encapsulation film has poor function of blocking ultraviolet rays and reflecting sunlight, in order to prevent the rapid aging of the backplane, it is necessary to install a UV-blocking film on the backplane. Composite or coated film, the composite or coated film mainly includes three-layer composite or coated film of fluorine film / polyester film / fluorine film, three-layer composite or coated film of fluorine film / polyester film / non-fluorine film lamination
However, although the composite or coating film can block ultraviolet rays, it degrades quickly under the irradiation of ultraviolet light. The degradation of the composite or coating film will make the performance of the backplane drop sharply and increase the risk of component failure.
Moreover, the setting of the composite or coating film also increases the cost of the solar cell module, and the use effect is not ideal

Method used

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  • High-efficiency solar packaging film

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Embodiment 1

[0015] Embodiment 1: A high-efficiency solar energy encapsulation adhesive film, including an upper adhesive film and a lower adhesive film, the thickness of the upper adhesive film is 200 μm, and the thickness of the lower adhesive film is 300 μm. Wherein the upper adhesive film mainly includes 100 parts by mass of EVA resin, 2-ethylhexyl peroxide tert-butyl carbonate, 1.5 parts of 2-ethylhexyl tert-butyl oxide, and 1 part of trimethylolpropane trimethacrylate. 1 part, 1 part of γ-methacryloxypropyl trimethoxysilane coupling agent and 0.5 part of stability aid, the upper layer of adhesive film can further include one or more conventional additives in this field as required, the Conventional additives include, but are not limited to, processing aids and flame retardants. The lower film mainly includes 100 parts by mass of EVA resin, 1.5 parts of tert-butyl peroxide 2-ethylhexyl carbonate, 1 part of trimethylolpropane trimethacrylate, 10 parts of titanium dioxide and 1 part of ...

Embodiment 2

[0017] Embodiment 2: A high-efficiency solar energy encapsulation adhesive film, including an upper adhesive film and a lower adhesive film, the thickness of the upper adhesive film is 100 μm, and the thickness of the lower adhesive film is 450 μm. The upper film mainly includes 100 parts by mass of EVA resin, 1.2 parts of tert-butyl peroxide 2-ethylhexyl carbonate, 0.6 parts of trimethylolpropane trimethacrylate, γ-methacryloxypropane 0.8 parts of trimethoxysilane coupling agent, 0.8 parts of bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate and tetrakis[β-(3,5-di-tert-butyl Base-4-hydroxyphenyl) propionate] 0.8 part of pentaerythritol ester, the upper film can further include one or more conventional additives in the field according to needs, the conventional additives include but not limited to processing aids and flame retardant agent. The lower film mainly includes 100 parts by mass of EVA resin, 1.2 parts of tert-butyl peroxide 2-ethylhexyl carbonate, 0.6 parts of trimeth...

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Abstract

The invention discloses a high-efficiency solar packaging film. The film comprises an upper layer film and a lower layer film, wherein the upper layer film comprises, by mass, 100 parts of ethylene-vinyl acetate (EVA) resin, 0.1-10 parts of peroxide, 0.1-5 parts of assistant crosslinkers, 0.1-5 parts of silane coupling agents and 0.1-15 parts of stable assistants; the lower layer film comprises, by mass, 100 parts of ethylene-vinyl acetate (EVA) resin, 0.1-10 parts of peroxide, 0.1-5 parts of assistant crosslinkers and 0.1-15 parts of stable assistants; and the lower layer film also comprises, by mass, one type or more types of titanium pigment, zinc oxide, calcium carbonate, barium sulfate, ferric oxide and carbon black. The film has good sunlight reflection capability and can prevent ultraviolet rays of sunlight effectively. The photoelectric conversion efficiency of solar assemblies is improved, the cost of solar assemblies is reduced and the service life of solar assemblies is prolonged.

Description

technical field [0001] The invention relates to a solar energy encapsulation adhesive film, in particular to a solar energy encapsulation adhesive film composed of an upper layer adhesive film and a lower layer adhesive film with high photoelectric conversion efficiency. Background technique [0002] Solar energy is an excellent choice to replace the increasingly depleted petroleum energy. In recent years, crystalline silicon solar cells have received great attention and development. The main body of a typical crystalline silicon solar cell module is a laminate of multi-layer materials. The structure of the laminate is a layer of glass, a layer of encapsulation film, and a layer of solar cells from top to bottom. , a layer of packaging film and a layer of backplane. In the current commercial crystalline silicon solar modules, the encapsulation film is mainly made of ethylene-vinyl acetate copolymer (hereinafter referred to as EVA), and the upper and lower layers of encapsu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/00C09J123/08C09J11/04C09J11/06H01L31/048
CPCY02E10/50
Inventor 李秋明付婷婷
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