Laminated packaging film for solar batteries

A solar cell and encapsulation film technology, which is applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of high thermal conductivity and water vapor transmission rate, unfavorable power generation efficiency, and no reflection function, so as to achieve high barrier properties and improve Effects of photoelectric conversion efficiency and high reflectivity

Inactive Publication Date: 2012-12-19
CYBRID TECHNOLOGIES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the current encapsulation materials for solar cell modules have good encapsulation functions, they have no reflective function as encapsulation materials on the back of solar cells, and have high thermal conductivity and water vapor transmission rate, which is not conducive to improving power generation efficiency, and cannot be used according to Coloring is required; if a single layer of solar cell backside encapsulation material containing functional fillers is used, the encapsulation material containing functional fillers often overflows to the front of the solar cell during the lamination process to block sunlight

Method used

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  • Laminated packaging film for solar batteries

Examples

Experimental program
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Effect test

Embodiment 1

[0025]Embodiment 1: The transparent layer 1 is EVA resin (purchased from DuPont Company of the United States, brand 150, VA content is 33%), and the thickness is 100 microns. The functional layer 2 is based on the transparent layer 1 resin with 5% titanium dioxide (purchased from DuPont, USA, TS-6200) added. A double-layer structure film containing the transparent layer 1 material and the functional layer 2 material was prepared by a co-extrusion casting process, wherein the thickness of the transparent layer 1 was 100 um, and the thickness of the functional layer 2 was 400 um. The upper protective material glass whiteboard (manufactured by Asahi Glass Co., Ltd., trade name Solyte), EVA adhesive film (Mitsui Chemicals Co., Ltd.), solar cell monomer, double-layer packaging adhesive film according to the present invention, and the lower protective material glass whiteboard (Asahi Glass Co., Ltd. Co., Ltd., trade name Solyte) are sequentially laminated and laminated to form a sol...

Embodiment 2

[0027] In Example 1, the resin of the transparent layer 1 and the functional layer 2 was changed to PVB, and it was the same as that of Example 1.

Embodiment 3

[0029] Change the transparent layer 1 resin in Example 1 to polyolefin POE (Mitsui Chemicals DF740), the functional layer 2 resin is to add 3% titanium black on the basis of the A layer resin, and the lower protective material in the solar cell module is changed It is a photovoltaic backplane (Suzhou Saiwu Applied Technology Co., Ltd., Cynagard121), except that it is the same as Embodiment 1.

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Abstract

The invention discloses a laminated packaging film for solar batteries. A solar battery rear panel using the packaging film and a solar battery module are used. The laminated packaging film for the solar batteries is characterized by comprising a transparent layer (1) and a functional layer (2) and has one or more of following functions: a light reflection function or/and a water-vapor blocking function or/and a radiating function. The laminated packaging film has good packaging function, enables the packaging material to have functions such as high reflectance, high barrier, high heat conduction and high insulating performance, and is capable of improving the photoelectric conversion efficiency of the solar battery.

Description

technical field [0001] The invention belongs to the field of photovoltaic power generation, and in particular relates to a laminated packaging film for solar cells. Background technique [0002] Finding new energy sources that can replace petroleum fuels is an urgent problem that mankind needs to solve. Solar energy is an inexhaustible and non-polluting energy source. At present, the utilization of solar energy mainly converts light energy into electrical energy through solar cells. A plurality of solar cells are interconnected and packaged to form a solar module. Its general structure is: use transparent materials (commonly used glass / light-transmitting solar cells) as the upper protective material to cover the surface on the side irradiated by sunlight, and use thermoplastic An encapsulation material made of plastic such as ethylene-vinyl acetate copolymer fills the gap and protects its backside using a backside encapsulation sheet (backsheet) as a lower protective materi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/048
CPCY02E10/50
Inventor 都佩华宇野敬一吴小平陈洪野李燚周强
Owner CYBRID TECHNOLOGIES INC
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