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Solar cell packaging film

A technology for solar cells and packaging films, applied in circuits, photovoltaic power generation, electrical components, etc., to achieve high weather resistance, improve conversion efficiency, and reduce temperature

Active Publication Date: 2015-12-16
LUCKY HUAGUANG GRAPHICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the incident light management technology of solar cells focuses on improving the optical path of sunlight and reducing light reflection on the surface of the cell. There is no published technical literature on how to selectively block infrared light beyond the cut-off wavelength that is harmful to the cell itself.

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0040] Preparation steps of the present invention:

[0041] Step 1, carrying out corona treatment on both sides of the transparent support;

[0042] Step 2: prepare a wear-resistant filter coating solution, apply the coating solution on the surface of a transparent support, control the thickness of the coated film through the selection of vehicle speed and anilox roller, and perform UV curing after drying to obtain a wear-resistant filter Floor;

[0043] Step 3: Carry out vacuum coating on the other side of the transparent support, and obtain a gas barrier layer by controlling the speed of the vehicle and the film forming process.

Embodiment 1

[0046] ETFE film with a thickness of 50 μm is selected, after surface cleaning and pretreatment, corona treatment is carried out;

[0047] Prepare a wear-resistant coating solution, use an anilox roller to coat a wear-resistant filter coating on the surface of the ETFE film, the thickness of the coating is controlled to 3 μm, and after drying at 80°C, use ultraviolet light to cure.

[0048] After curing, PECVD is used to deposit a silicon oxide film with a thickness of 300 nm on the surface of the uncoated ETFE film to obtain the required solar cell front-side packaging film material.

[0049] The coating liquid composition as shown in embodiment 1 is:

[0050] A wear-resistant filter coating solution is composed of ITO nanoparticles with a diameter of 10 nanometers and a transparent wear-resistant coating solution, wherein the mass percentage of ITO in the wear-resistant filter coating solution is 10%;

[0051] The transparent wear-resistant coating solution is an ultraviole...

Embodiment 2

[0054] In Example 1, the mass percentage of ITO nanoparticles in the wear-resistant filter coating solution is 5%, and the thickness of the deposited silicon oxide film is 400nm. Except for this, the same operation as Example 1 is performed. The optical transmittance test and characterization of the obtained solar cell encapsulation film were carried out, and the results were as follows: figure 2 shown.

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Abstract

The invention discloses a solar cell packaging film. The solar cell packaging film comprises a transparent support wear-resistant filtering layer and a gas barrier layer. The optical transmittance of the packaging film is 80%-95%. The transmittance of the packaging film over solar light with the wavelength of 380-1200 nm is 90%-95%, the transmittance over the solar light with the wavelength of 1400-2500 nm is 30%-80%, and the water vapor transmittance is 1*10<-4>-1*10<-1> g / m2*day. According to the invention, the solar cell packaging film is simple in structure and convenient to produce and machine; the surface density is low, installation and transportation are facilitated; the water air barrier property and the weather fastness are good, and the lifetime requirement of more than 25 years is met for a solar cell; in addition, the solar cell packaging film is also provided with a wear-resistant function and an optical filtering function, so that the practical power generation capability of a packaged cell assembly is further improved.

Description

technical field [0001] The invention belongs to the technical field of thin films, in particular to a solar cell packaging thin film. Background technique [0002] The solar cell front side encapsulation film is a new type of encapsulation material used to replace the solar cell front plate glass, and is an essential part of lightweight and flexible solar cell modules. The solar cell module is directly exposed to the atmosphere when in use, and the weather resistance and stability of its packaging material directly affect the service life of the solar cell module. Therefore, in addition to satisfying high optical transmittance, the solar cell front-side encapsulation film should also have friction resistance and high water vapor barrier performance. However, looking at the existing patented technologies and high-barrier products in the market, most of the research and development objects are solar cell backsheets, and there are few solar cell front film packaging technologi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/048
CPCY02E10/50H01L31/0481
Inventor 宋鑫赵伟涛李丽霍弘黄尚鸿钟新鸣刘贤豪
Owner LUCKY HUAGUANG GRAPHICS
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