Transparent back plate for solar cell module

A technology of solar cells and components, applied in electrical components, circuits, semiconductor devices, etc., can solve problems such as high product cost and backplane delamination, and achieve the effects of lower backplane cost, high light transmittance, and excellent weather resistance

Active Publication Date: 2014-12-10
HANGZHOU FIRST APPLIED MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The prior art publication number is CN201979775U. The fluorine-containing coating is coated on the surface of the transparent PET substrate, and the obtained transparent backboard has the advantages of good weather resistance and high light transmittance, but its product cost is high, and it is easy to occur during use. Backplane delamination and other defects

Method used

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  • Transparent back plate for solar cell module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The coating formula of the weather-resistant layer is as follows (parts by mass):

[0023] Fluorine-containing resin GK570 (Dakin Paint) 100;

[0024] Modified resin 4701 (Dow Chemical) 20;

[0025] Curing agent TPA-90SB (Asahi Kasei, Japan) 10;

[0026] Curing accelerator Dibutyltin dilaurate 0.5;

[0027] UV absorber BYK3812 (German BYK Chemicals) 1;

[0028] Solvent ethyl acetate 10.

[0029] The coating formulation of the adhesive layer is as follows (parts by mass):

[0030] Acrylic resin LR7765 (Mitsubishi, Japan) 100;

[0031] Modified resin 4701 (Dow Chemical) 30;

[0032] Curing agent TPA-90SB (Asahi Kasei, Japan) 10;

[0033] Curing accelerator Dibutyltin dilaurate 2;

[0034] UV absorber BYK3812 (German BYK chemical) 2;

[0035] Solvent ethyl acetate 20.

[0036] The process of making the back sheet: select a transparent PET film with a thickness of 250 μm, and use a corona device to corona to 50~60dyne / cm. First, coat the surface layer of PET a...

Embodiment 2

[0039] The coating formula of the weather-resistant layer is as follows (parts by mass):

[0040] Fluorine-containing resin GK570 (Dakin Paint) 100;

[0041] Modified resin ST5790 (Toyobo, Japan) 50;

[0042] Curing agent N3390 (Bayer, Germany) 20;

[0043] Curing accelerator Dibutyltin dilaurate 1;

[0044] Anti-hydrolysis stabilizer P200 (Rheinland Stabaxol series) 0.5;

[0045] UV absorber / light stabilizer UV-531 / UV-292 2 / 2;

[0046] Matting powder C803 (made in Grace, USA) 10;

[0047] Solvent propylene glycol methyl ether acetate 100.

[0048] The coating formulation of the adhesive layer is as follows (parts by mass):

[0049] Acrylic resin ACR6730 (Gaoming Tongde Chemical) 100;

[0050] Modified resin ST5790 (Toyobo, Japan) 50;

[0051] Curing agent N3390 (Bayer, Germany) 15;

[0052] Curing accelerator Dibutyltin dilaurate 1;

[0053] UV absorber / light stabilizer UV-531 / UV-292 2 / 2;

[0054] Solvent butyl acetate 40.

[0055] The process of making the bac...

Embodiment 3

[0058] The coating formula of the weather-resistant layer is as follows (parts by mass):

[0059] Fluorine-containing resin GK570 (Dakin Paint) 100;

[0060] Modified resin GK680 (Toyobo, Japan) 100;

[0061] Curing agent Desmodur Z4470 (Bayer, Germany) 30;

[0062]Curing accelerator dibutyltin dilaurate 2;

[0063] Mica powder 20;

[0064] Matting powder C803 (American Grace) 20;

[0065] Anti-hydrolysis stabilizer P200 (Rheinland Stabaxol series) 2;

[0066] UV absorber / light stabilizer UV-196 / UV-292 4 / 4;

[0067] Solvent Xylene / Propylene Glycol Methyl Ether Acetate 100 / 150.

[0068] The coating formulation of the adhesive layer is as follows (parts by mass):

[0069] Acrylic resin LR7765 (Mitsubishi, Japan) 100;

[0070] Modified resin GK680 (Japan Toyo Textile) 100;

[0071] Curing agent Desmodur Z4470 (Bayer, Germany) 25;

[0072] Curing accelerator dibutyltin dilaurate 2;

[0073] Matting powder C803 (American Grace) 20;

[0074] UV absorber / light stabiliz...

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Abstract

The invention discloses a transparent back plate for a solar cell module. The transparent back plate for the solar cell module is composed of a base layer, a weather-proof coating coated to the surface of the base layer, and an adhesive layer coated to the other surface of the base layer. The weather-proof coating is 30 mu m-50 mu m in thickness and composed of fluorine-containing resin, a curing agent, modified resin, a curing agent accelerator, fillers, an additive and solvent. The adhesive layer is 5 mu m-10 mu m in thickness and composed of matrix resin, a curing agent, a modified resin, a curing agent accelerator, fillers, an additive and solvent. The transparent back plate can ensure the high light transmittance and adjust the degree of haze as needed as well as can meet the needs of building-integrated photovoltaic (BIPV) and bifacial photovoltaic power generation components.

Description

technical field [0001] The invention relates to a transparent back plate for a solar battery module. Background technique [0002] With the rapid development of building-integrated photovoltaics and double-sided photovoltaic power generation modules, the application of transparent solar cell backsheets is becoming more and more extensive, and its performance requirements are also getting higher and higher. In addition to the electrical insulation, moisture resistance and weather resistance of conventional backsheets, transparent solar backsheets also need to have excellent UV resistance and high light transmittance. [0003] The existing transparent backsheet products are mainly transparent PET type backsheets, but after a period of humid heat aging (85°C*85%RH), this type of backsheet will have increased yellowing value, PET cracks and brittleness, etc. In this case, there is a defect of poor weather resistance. [0004] The film-coated transparent backsheet is made of we...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/049C09D127/12C09D7/12C09J133/00C09J175/04C09J11/06C09J11/04B32B27/20B32B27/08
CPCC09D7/61C09D7/65C09D127/12C09J133/00Y02B10/10
Inventor 梅云宵林维红王广志林建华
Owner HANGZHOU FIRST APPLIED MATERIAL CO LTD
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