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A transparent backplane of solar photovoltaic cell module for double-sided power generation

A photovoltaic cell and double-sided power generation technology, applied in electrical components, photovoltaic power generation, circuits, etc., can solve the problems of poor wear resistance, failure of the coating backplane, aging and thinning of the weather-resistant layer, water vapor penetration, etc., and achieve high adhesion Effects of strength, high barrier properties and heat resistance

Active Publication Date: 2020-06-09
CHANGZHOU HUITIAN NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the wear resistance of the coated backsheet is poor, and the barrier property is not ideal. It is prone to the risk of the aging and thinning of the weather-resistant layer and the risk of water vapor penetration, which will reduce the power generation efficiency of the module and fail. And the coated backsheet based on PET is transparent. The light rate is not particularly high

Method used

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  • A transparent backplane of solar photovoltaic cell module for double-sided power generation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] Such as figure 1 As shown, the PET film of the transparent weather-resistant layer of the solar cell transparent back sheet in this embodiment has a thickness of 80 μm; the first adhesive layer and the second adhesive layer are both transparent acrylic glues with a thickness of 8 μm; the transparent weather-resistant The thickness of the PMMA film is 150 μm; the thickness of the transparent barrier COC film is 100 μm. Wherein the formula of PET film is as follows:

[0086] 90.8 parts of polyethylene terephthalate

[0087] Modified resin PC 4 parts

[0088] Plasticizer DOP 3 parts

[0089] Nucleating agent sarin resin 0.2 parts

[0090] Anti-hydrolysis agent carbodiimide 2 parts

[0091] The formula of PMMA film is as follows:

[0092] 71.5 parts of polymethyl methacrylate

[0093] Toughening agent MBS 15 parts

[0094] Plasticizer DOP 10 parts

[0095] UV absorber UV-360 2 parts

[0096] Light stabilizer 325 1 part

[0097] Antioxidant 1010 / 168 0.3 / 0.2 parts ...

Embodiment 2

[0106] Such as figure 1 As shown, the PET film of the transparent weather-resistant layer of the solar cell transparent back sheet in this embodiment has a thickness of 60 μm; the first adhesive layer and the second adhesive layer are both transparent acrylic glues with a thickness of 8 μm; the transparent weather-resistant The thickness of the PMMA film is 160 μm; the thickness of the transparent barrier COC film is 110 μm. Wherein the formula of PET film is as follows:

[0107] 94.8 parts of polyethylene terephthalate

[0108] Plasticizer DOP 3 parts

[0109] Nucleating agent sarin resin 0.2 parts

[0110] Anti-hydrolysis agent carbodiimide 2 parts

[0111] The formula of PMMA film is as follows:

[0112] 71.5 parts of polymethyl methacrylate

[0113] Toughening agent MBS 15 parts

[0114] Plasticizer TOTM 10 parts

[0115] Ultraviolet absorber UV-234 2 parts

[0116] Light stabilizer 325 1 part

[0117] Antioxidant 1010 / 168 0.3 / 0.2 parts

[0118] The formula of t...

Embodiment 3

[0126] Such as figure 1 As shown, the PET film of the transparent weather-resistant layer of the solar cell transparent back sheet in this embodiment has a thickness of 108 μm; the first adhesive layer and the second adhesive layer are both transparent acrylic glue, and the thickness is 6 μm; the transparent weather-resistant The thickness of the PMMA film is 110 μm; the thickness of the transparent barrier COC film is 150 μm. Wherein the formula of PET film is as follows:

[0127] 94.8 parts of polyethylene terephthalate

[0128] Plasticizer DOP 3 parts

[0129] Nucleating agent sarin resin 0.2 parts

[0130] Anti-hydrolysis agent carbodiimide 2 parts

[0131] The formula of PMMA film is as follows:

[0132] 76.5 parts of polymethyl methacrylate

[0133] Toughening agent MBS 15 parts

[0134] Plasticizer TOTM 5 parts

[0135] Ultraviolet absorber UV-234 2 parts

[0136] Light stabilizer 325 1 part

[0137] Antioxidant 1010 / 168 0.3 / 0.2 parts

[0138] The formula of ...

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Abstract

The invention relates to the technical field of a solar photovoltaic cell back sheet film, and more particularly relates to a transparent backboard of a solar photovoltaic cell pack for double-sided power generation. The transparent backboard is composed of a weather resistant layer, a first adhesive layer, a base layer, a second adhesive layer and a high-permeability barrier layer from top to bottom in sequence; the weather-resistant layer is a transparent weather-resistant PET film having a thickness of 30-180 [mu]m; the first adhesive layer and the second adhesive layer are one of a polyurethane, acrylate or epoxy resin system having a thickness of 5 to 15 [mu]m; the base layer is a transparent weather-resistant PMMA film having a thickness of 120 to 200 [mu]m; and the high-permeabilitybarrier layer is a cyclic polyolefin COC film having a thickness of 50 to 150 [mu]m. The invention combines three transparent films into a novel weather-resistant backboard, which has high light transmission performance and is suitable for the requirements of double-sided photovoltaic power generation components.

Description

technical field [0001] The invention relates to the field of solar cell back plates, in particular to a transparent back plate of a solar photovoltaic cell module for double-sided power generation. Background technique [0002] As an important packaging material for solar cells, solar backsheets play a vital role in protecting battery life. With the rapid development of photovoltaic power generation technology, people pay more and more attention to the power generation efficiency of solar cells. Under the condition of ensuring the basic electrical insulation, moisture barrier and weather resistance of the backplane, the backplane with higher power generation gain has become a concern. Some backplanes that improve reflectivity have been widely used. With the improvement of battery technology, double-sided power generation batteries have also attracted attention. Traditional double-glass components are fragile, heavy and difficult to install. restricted. The emergence of tra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/048H01L31/049
CPCH01L31/048H01L31/0481H01L31/049Y02E10/50
Inventor 周俊黄欢李建
Owner CHANGZHOU HUITIAN NEW MATERIALS