A grid-like double-layer structure photovoltaic module encapsulation film and preparation method thereof

A photovoltaic module encapsulation, double-layer structure technology, applied in lamination devices, photovoltaic power generation, chemical instruments and methods, etc., can solve problems such as the inability to use the entire layer of high-reflection white encapsulation film, and the inability to generate electricity on the back of double-sided cells. Achieve the effect of improving photoelectric conversion efficiency, simple structure and beautiful appearance

Active Publication Date: 2019-08-02
福斯特(滁州)新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is not possible to use a whole layer of highly reflective white packaging film on the packaging of the double-sided battery module, because it will completely cover the incident light on the back of the module, resulting in the failure of the back of the double-sided battery to generate electricity.

Method used

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  • A grid-like double-layer structure photovoltaic module encapsulation film and preparation method thereof
  • A grid-like double-layer structure photovoltaic module encapsulation film and preparation method thereof
  • A grid-like double-layer structure photovoltaic module encapsulation film and preparation method thereof

Examples

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Effect test

Embodiment 1

[0039] A method for preparing a grid-like double-layer structure photovoltaic module encapsulation adhesive film, comprising the following steps:

[0040] 1. Use 60wt% ethylene-vinyl acetate copolymer (EVA) and 25wt% ethylene-octene copolymer as the resin substrate, select 5wt% titanium dioxide and 5wt% hollow glass microspheres as high-reflective fillers, and add 5wt% of modification aid vinyltrimethoxysilane, 2wt% of crosslinking aid trimethylolpropane triacrylate and 3wt% of anti-thermal oxygen aging agent 2,2'-methylene-bis-( 4-methyl-6-tert-butylphenol) mixed evenly, extruded at 60-90°C, cast into a film, and fully cooled, such as image 3 As shown, through a pair of knife rolls 22 and the first concave roll 23 that are engaged with each other, the linear speed of the knife roll 22 and the first concave roll 23 is the same as that of the adhesive film production line. Such as Figure 4 As shown, the outer circumference of the knife roller 22 has a plurality of fully enc...

Embodiment 2

[0045] A method for preparing a grid-like double-layer structure photovoltaic module encapsulation adhesive film, comprising the following steps:

[0046] 1. Use 70wt% ethylene-methyl methacrylate copolymer as the substrate, select 5wt% barium sulfate, 5wt% aluminum oxide, and 5wt% talcum powder as high-reflective fillers, and add 10wt% modification additive 3 - (methacryloyl chloride) propyltrimethoxysilane, 1wt% crosslinking aid triallyl isocyanurate and 1wt% crosslinking aid trimethylolpropane triacrylate and 3wt% % of anti-thermal oxygen aging agent 1,3,5-tris(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)-1,3,5-triazine-2,4, 6-(1H, 3H, 5H)-triketone is mixed uniformly and then extruded at 60-90°C, cast into a film, and fully cooled, such as Figure 6 As shown, first pass through a pair of pin rolls 24 and the second concave roll 25 that are engaged with each other, and the linear speed of the pin roll 24 and the second concave roll 25 is the same as the speed of the film pro...

Embodiment 3

[0051] A method for producing a grid-like double-layer structure photovoltaic module encapsulation film, comprising the following steps:

[0052] 1. Use 40wt% polyethylene (PE), 30wt% polypropylene (PP) and 10wt% ethylene-α-olefin copolymer as the substrate, select 10wt% silica as a high-reflective filler, and add 5wt% Modified auxiliary agent 3-(methacryloyl chloride) propyl trimethyloxysilane, 2wt% crosslinking auxiliary agent triallyl cyanurate and 3wt% anti-thermal oxygen aging agent three (2, 4-Di-tert-butylphenyl) phosphite is mixed evenly and melted, such as Figure 10 As shown, first through the first set of die nozzles 11 and the second set of die nozzles 12 to inject into the mold 13 that circulates and rolls, as Figure 13 As shown, the first set of die head nozzles 11 are 7 continuous spray nozzles arranged in a line along the film width direction, and the edge nozzles 19 on both sides have a width of 5cm; the width of the five middle nozzles 20 is 0.3cm, and the ...

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Abstract

The invention discloses a grid-shaped double-layer photovoltaic component package glue film and a preparation method thereof. The grid-shaped double-layer photovoltaic component package glue film is composed of a high-light-reflective glue film layer and a transparent glue film layer through hot melt adhesion or adhesive adhesion. The high-light-reflective glue film layer has a grid-shaped hollowed shape, wherein the shape, size and position of meshes therein are one-to-one corresponded to the shape, size and position of battery pieces in a photovoltaic component. The grid-shaped double-layer package glue film can be used for packaging various photovoltaic components. By means of complete reflection of light in the gaps between the battery pieces, the photovoltaic component is improved in photoelectric conversion efficiency and is increased in generated energy. Meanwhile, material cost of the product is saved and application of a high-light-reflective glue film is developed.

Description

technical field [0001] The invention relates to a photovoltaic module, in particular to a grid-shaped double-layer structure encapsulating adhesive film and a preparation method thereof. Background technique [0002] With the aggravation of a series of economic and social problems such as energy shortage and environmental deterioration caused by the continuous use of conventional energy, solar energy, as an inexhaustible renewable clean energy, has been paid more and more attention. Among the many technologies that effectively utilize solar energy, photovoltaic technology is gradually penetrating people's lives. As the core part of solar power generation, photovoltaic modules have attracted more and more attention in terms of cost and efficiency. [0003] In the prior art, taking EVA as an encapsulation film as an example, the structure of a conventional photovoltaic module is tempered glass, EVA encapsulation film, battery sheet, EVA encapsulation film, glass or polymer ba...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B37/06B32B37/12B32B27/28B32B27/32B32B27/06B32B27/08B32B3/24C08L23/08C08K13/04C08K3/22C08K7/28C08K5/103H01L31/048
CPCY02E10/50
Inventor 王梁桑燕熊曦曹明杰彭瑞群侯宏兵
Owner 福斯特(滁州)新材料有限公司
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