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Solar battery back plate

A solar cell and backplane technology, applied in the field of solar cells, can solve problems such as low reflectivity, yellowing and brittleness, and high heat generation, and achieve good heat dissipation, improved module power, and good long-term aging resistance

Inactive Publication Date: 2017-06-20
CYBRID TECHNOLOGIES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the existing solar backsheets have low reflectivity and excessive heat generation during use, resulting in yellowing and brittleness, which affects the service life of solar cell modules

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] refer to figure 1 , a solar battery back sheet, comprising a PET base layer 1, a weather-resistant film layer 2, a transparent adhesive layer 3 and an adhesive layer 4 for bonding with an encapsulation adhesive film;

[0024] The above-mentioned PET matrix layer 1 provided by the present invention is a highly reflective foamed polyethylene terephthalate film with a thickness of 50 to 500 microns, and a specific thickness of 250 microns; the weather-resistant film layer 2 is a weather-resistant polyethylene terephthalate film. One of ethylene glycol formate or polyvinylidene fluoride film, with a thickness of 20-50 microns, specifically 22.5 microns; transparent adhesive 3 is a transparent polyester adhesive, with a thickness of 5-30 microns , the specific thickness is 10 microns; the adhesive layer 4 that is bonded to the encapsulation film includes organic resin, curing agent, and inorganic seasoning, and its thickness is 1-30 microns, preferably 5 microns. The organi...

Embodiment 2

[0028] refer to figure 1 , a solar battery back sheet, comprising a PET base layer 1, a weather-resistant film layer 2, a transparent adhesive layer 3 and an adhesive layer 4 for bonding with an encapsulation adhesive film;

[0029] The above-mentioned PET matrix layer 1 provided by the present invention is a highly reflective foamed polyethylene terephthalate film, with a thickness of 50 to 1000 microns, and a specific thickness of 150 microns; the weather-resistant film layer 2 is a weather-resistant polyethylene terephthalate film. One of ethylene glycol formate or polyvinylidene fluoride film, with a thickness of 20-50 microns, specifically 22.5 microns; transparent adhesive 3 is a transparent polyester adhesive with a thickness of 5-30 microns micron, the specific thickness is 10 microns; the bonding layer 4 which is bonded to the encapsulation film includes organic resin, curing agent, and inorganic seasoning, and its thickness is 1-30 microns, preferably 5 microns. The...

Embodiment 3

[0032] refer to figure 1 , a solar battery back sheet, comprising a PET base layer 1, a weather-resistant film layer 2, a transparent adhesive layer 3 and an adhesive layer 4 for bonding with an encapsulation adhesive film;

[0033] The above-mentioned PET matrix layer 1 provided by the present invention is a highly reflective foamed polyethylene terephthalate film with a thickness of 50 to 1000 microns, and a specific thickness of 125 microns; the weather-resistant film layer 2 is a weather-resistant polyethylene terephthalate film. One of ethylene glycol formate or polyvinylidene fluoride film, with a thickness of 20-50 microns, specifically 38 microns; transparent adhesive 3 is a transparent polyester adhesive with a thickness of 5-30 microns micron, the specific thickness is 10 microns; the bonding layer 4 which is bonded to the encapsulation film includes organic resin, curing agent, and inorganic seasoning, and its thickness is 1-30 microns, preferably 5 microns. The or...

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PUM

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Abstract

The invention discloses a solar battery back plate. The solar battery back plate comprises a PET base body layer, a weather-proof thin film layer, an adhesive layer and a binding layer, wherein the weather-proof thin film layer with long-term weather-proof property is arranged on one side of the PET base body layer; the PET base body layer and the weather-proof thin film layer are glued through the adhesive layer; and the binding layer used for gluing a packaging adhesive film is arranged on the other side of the PET base body layer. The super-high-reflectivity solar battery back plate provided by the invention has the advantages of high binding force with EVA, high long-term aging resistance, and the like; and meanwhile, the reflectivity of the solar battery back plate in a wavelength range of 400-1,100nm is greater than 97%, so that assembly efficiency can be obviously improved.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a solar cell backboard. Background technique [0002] A solar cell is a device that directly converts solar energy into electrical energy. The wavelength range of the sunlight it mainly uses is 400-1100nm, but the reflectivity of the general backplane is low, and the reflectivity of 400-1100nm is about 70%, which makes Part of the sunlight that reaches the back of the solar cell module passes through the solar backplane and reaches the outside of the module, resulting in the loss of solar energy, thereby reducing the light energy conversion efficiency of the solar cell module. Experimental data proves that for a 250W battery module, every 10% increase in the reflectivity of the back plate can increase the power generation of the battery by 0.3%. At the same time, the existing solar backsheets have low reflectivity and excessive heat generation during use, resulting in yellow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/049H01L31/056
CPCY02E10/52H01L31/049H01L31/056
Inventor 刘源李新军夏修旸吴小平陈洪野宇野敬一
Owner CYBRID TECHNOLOGIES INC
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