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Light-conversion EVA (Ethylene Vinyl-Acetate Copolymer) adhesive film for solar battery and preparation method thereof

A solar cell and film technology, applied in circuits, adhesives, photovoltaic power generation, etc., can solve problems such as reducing power generation efficiency, accelerating the aging of component materials, heating solar cell components, etc., to achieve the effect of improving power generation efficiency

Inactive Publication Date: 2013-03-13
WUXI LIANGZI GUXIN MATERIAL SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The photoelectric response range of silicon-based solar cells encapsulated with this EVA film is about 400-1000nm. Ultraviolet light below 400nm in the solar spectrum can not be absorbed by silicon-based solar cells to generate electricity, but also heats solar cell components to reduce power generation. efficiency, accelerated aging of component materials

Method used

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  • Light-conversion EVA (Ethylene Vinyl-Acetate Copolymer) adhesive film for solar battery and preparation method thereof
  • Light-conversion EVA (Ethylene Vinyl-Acetate Copolymer) adhesive film for solar battery and preparation method thereof
  • Light-conversion EVA (Ethylene Vinyl-Acetate Copolymer) adhesive film for solar battery and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] In terms of parts by weight, 0.1 part of luminescent complex, 0.2 part of antioxidant, 1.5 part of crosslinking agent and 0.1 part of accelerator are added to 100 parts of ethylene-vinyl acetate copolymer (EVA) with a VA content of 33%.

[0038] The luminescent complex is a rare earth europium complex, the crosslinking agent is dibenzoyl peroxide, and the antioxidant is 1, 3, 5-tris(4-tert-butyl-3-hydroxy-2, 6-dimethylbenzene Methyl)-1,3,5-triazine-2,4,6-(1H,3H,5H)-trione / tris(2,4-di-tert-butylphenyl)phosphite complex, The accelerator is triallyl triisocyanate.

[0039] (1) First mix the above raw materials evenly;

[0040] (2) Pour the mixture obtained in step (1) into a twin-screw extrusion granulator for mixing and granulation. The twin-screw extruder is divided into three sections, namely, the entrance section, the middle section and the exit section. : 81~84℃, 85~90℃, 84~86℃;

[0041] (3) The granulated particles can be passed through the film-forming system to ...

Embodiment 2

[0043] In terms of parts by weight, 1 part of luminescent complex, 0.2 part of antioxidant, 1.5 part of crosslinking agent and 0.1 part of accelerator are added to 100 parts of ethylene-vinyl acetate copolymer (EVA) with a VA content of 33%.

[0044] The luminescent complex is a rare earth europium complex, the crosslinking agent is dibenzoyl peroxide, and the antioxidant is 1, 3, 5-tris(4-tert-butyl-3-hydroxy-2, 6-dimethylbenzene Methyl)-1,3,5-triazine-2,4,6-(1H,3H,5H)-trione / tris(2,4-di-tert-butylphenyl)phosphite complex, The accelerator is triallyl triisocyanate.

[0045] (1) First mix the above raw materials evenly;

[0046] (2) Pour the mixture obtained in step (1) into a twin-screw extrusion granulator for mixing and granulation. The twin-screw extruder is divided into three sections, namely, the entrance section, the middle section and the exit section. : 81~84℃, 85~90℃, 84~86℃;

[0047] (3) The granulated particles can be passed through the film-forming system to ob...

Embodiment 3

[0049] In parts by weight, 2 parts of luminescent complex, 0.2 part of antioxidant, 1.5 part of crosslinking agent and 0.1 part of accelerator are added to 100 parts of ethylene-vinyl acetate copolymer (EVA) with VA content of 33%.

[0050] The luminescent complex is a rare earth europium complex, the crosslinking agent is dibenzoyl peroxide, and the antioxidant is 1, 3, 5-tris(4-tert-butyl-3-hydroxy-2, 6-dimethylbenzene Methyl)-1,3,5-triazine-2,4,6-(1H,3H,5H)-trione / tris(2,4-di-tert-butylphenyl)phosphite complex, The accelerator is triallyl triisocyanate.

[0051] (1) First mix the above raw materials evenly;

[0052] (2) Pour the mixture obtained in step (1) into a twin-screw extrusion granulator for mixing and granulation. The twin-screw extruder is divided into three sections, namely, the entrance section, the middle section and the exit section. : 81~84℃, 85~90℃, 84~86℃;

[0053] (3) The granulated particles can be passed through the film-forming system to obtain the s...

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Abstract

The invention relates to an EVA (Ethylene Vinyl-Acetate Copolymer) adhesive film for packaging a solar battery and a preparation method thereof, in particular to a light-conversion EVA adhesive film with a light conversion property for the solar battery and a preparation method thereof. The light-conversion EVA adhesive film is prepared from EVA, a cross-linking agent, an antioxidant, an accelerator and a luminous complex through the steps of mixing and extruding. According to the light-conversion EVA adhesive film for the solar battery, provided by the invention, the rare earth europium luminous complex with reaction activity is used to replace an ultraviolet absorber and a stabilizer which are commonly used in the EVA adhesive film, so that the EVA adhesive film is capable of converting ultraviolet light in a solar spectrum, which cannot be responded by the solar battery, into red light of 612nm, which can be utilized; and therefore, a light conversion synergic effect can be achieved, damage of ultraviolet rays to the solar battery can be shielded effectively, and the power generation efficiency of the solar battery is enhanced further.

Description

technical field [0001] The invention relates to an EVA (ethylene-vinyl acetate copolymer) adhesive film for solar cell packaging and a preparation method thereof, in particular to a solar cell light-converting EVA adhesive film with light conversion characteristics and a preparation method thereof. Background technique [0002] The silicon-based solar cell of monocrystalline silicon or polycrystalline silicon is composed of an EVA (ethylene-vinyl acetate copolymer) film, an upper protective glass, and a lower protective material TPT (polyvinyl fluoride composite film) backplane bonded together to form a solar cell module. . The commonly used EVA film for encapsulating solar cells uses EVA resin with a vinyl acetate content of 28-33% as the main raw material, adding cross-linking curing agent, ultraviolet absorber, antioxidant, ultraviolet stabilizer, plasticizer, After adding various additives such as adhesives, it is a product that is extruded by heating. [0003] The pho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/00C09J123/08H01L31/048
CPCY02E10/50
Inventor 彭子飞唐峰
Owner WUXI LIANGZI GUXIN MATERIAL SCI & TECH DEV
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