Composite adhesive film, preparation method thereof and photovoltaic module

A photovoltaic module and composite adhesive technology, applied in photovoltaic power generation, adhesives, electrical components, etc., can solve the problems of high POE price, cell deviation, and difficult POE film.

Active Publication Date: 2022-02-11
RISEN ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in terms of performance, because the POE material is relatively slippery, it is easy to cause the cells to deviate during lamination, and the time required for lamination is 30% longer than that of EVA. This is one of the main reasons why the production capacity of double-glass modules is lower than that of single-glass modules.
Moreover, the price of POE is higher than that of EVA, and the price of POE per square meter is almost twice that of EVA, which makes it difficult for POE film to replace the use of EVA film in photovoltaic modules.

Method used

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  • Composite adhesive film, preparation method thereof and photovoltaic module
  • Composite adhesive film, preparation method thereof and photovoltaic module
  • Composite adhesive film, preparation method thereof and photovoltaic module

Examples

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preparation example Construction

[0036] According to a second aspect of the present invention, the preparation method of the composite film comprises the steps of:

[0037] (1) Stirring of raw materials, stirring the EVA film raw materials and their corresponding additives in the mixing equipment to form evenly stirred EVA film ingredients, stirring the POE film raw materials and their corresponding additives in the mixing equipment to form Stir the POE film ingredients evenly;

[0038] (2) extrusion molding, the uniformly stirred EVA film ingredients are extruded by extrusion equipment to form EVA colloids, and the stirred POE film ingredients are extruded by extrusion equipment to form POE colloids, wherein the EVA colloid and the The POE colloid is in a semi-fluid state, and the EVA colloid and the POE colloid are respectively cut into POE sheets and EVA sheets of the required size, wherein the width of the EVA sheet is smaller than the width of the POE sheet, and the POE The thickness of the sheet is gre...

Embodiment 1

[0049] A preparation method for a composite adhesive film, comprising the steps of:

[0050] (1) Stirring of raw materials, stirring the EVA film raw materials and their corresponding additives in the mixing equipment to form evenly stirred EVA film ingredients, stirring the POE film raw materials and their corresponding additives in the mixing equipment to form Stir the POE film ingredients evenly;

[0051] (2) extrusion molding, the uniformly stirred EVA film ingredients are extruded by extrusion equipment to form EVA colloids, and the stirred POE film ingredients are extruded by extrusion equipment to form POE colloids, wherein the EVA colloid and the The POE colloid is in a semi-fluid state, and the EVA colloid and the POE colloid are respectively cut into POE sheets and EVA sheets of the required size, wherein the width of the EVA sheet is smaller than the width of the POE sheet, and the POE The thickness of the sheet is greater than that of the EVA sheet, the thickness ...

Embodiment 2

[0059] A preparation method for a composite adhesive film, comprising the steps of:

[0060] (1) Stirring of raw materials, stirring the EVA film raw materials and their corresponding additives in the mixing equipment to form evenly stirred EVA film ingredients, stirring the POE film raw materials and their corresponding additives in the mixing equipment to form Stir the POE film ingredients evenly;

[0061] (2) extrusion molding, the uniformly stirred EVA film ingredients are extruded by extrusion equipment to form EVA colloids, and the stirred POE film ingredients are extruded by extrusion equipment to form POE colloids, wherein the EVA colloid and the The POE colloid is in a semi-fluid state, and the EVA colloid and the POE colloid are respectively cut into POE sheets and EVA sheets of the required size, wherein the width of the EVA sheet is smaller than the width of the POE sheet, and the POE The thickness of the sheet is greater than that of the EVA sheet, the thickness ...

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Abstract

The invention discloses a composite adhesive film, a preparation method thereof and a photovoltaic module. The composite adhesive film comprises an inner film layer and an outer film layer, the surface layer of the inner film layer is attached to a battery piece, the outer film layer wraps the inner film layer, the outer film layer is provided with a containing groove, the inner film layer is embedded in the containing groove, the inner film layer is an EVA layer, and the outer film layer is a POE layer. Therefore, through embedded composite molding of the inner film layer and the outer film layer, the POE layer is coated on the outer surface of the EVA layer, the performance of the adhesive film is improved, the adhesive film has the advantages of a POE adhesive film and an EVA adhesive film, the service life of a photovoltaic module is prolonged, and meanwhile, the laminating efficiency and quality of the adhesive film on a battery piece are improved.

Description

technical field [0001] The invention relates to the technical field of photovoltaic components, in particular to a composite adhesive film, a preparation method thereof, and a photovoltaic component. Background technique [0002] In the photovoltaic industry chain, photovoltaic adhesive film is mainly used in the packaging of photovoltaic modules, and is one of the key materials of photovoltaic modules. Photovoltaic adhesive film is made of resin as the main material. It is suitable for the inner packaging material of photovoltaic power generation components such as crystalline silicon cells, thin film cells, double-glass components, and double-sided cells. It plays a role in packaging and protecting solar cell components, and extends the components. service life. Since the packaging process of photovoltaic cells is irreversible, and the operating life of battery components is usually required to be more than 25 years, once the film of the module turns yellow and cracks, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/10H01L31/048
CPCC09J7/10H01L31/0481C09J2301/208C09J2423/04C09J2203/326Y02E10/50
Inventor 胡剑鸣刘亚锋黄晓蔡后敏张凌翔
Owner RISEN ENERGY
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