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Solar cell rear panel, preparation method of solar cell rear panel and solar cell module

A solar cell and backplane technology, which is applied in the field of solar cells, can solve the problems that solar cell backplanes are difficult to ensure high insulation and weather resistance and low cost at the same time, and achieve the effects of protecting the internal structure, improving insulation and weather resistance, and reducing costs

Inactive Publication Date: 2013-04-24
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention solves the technical problem that it is difficult to ensure high insulation and weather resistance and low cost at the same time in the solar battery backplane existing in the prior art

Method used

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  • Solar cell rear panel, preparation method of solar cell rear panel and solar cell module
  • Solar cell rear panel, preparation method of solar cell rear panel and solar cell module

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preparation example Construction

[0026] The present invention also provides a method for preparing the solar cell backsheet, comprising the following steps:

[0027] A. Carry out anodic oxidation on one surface of the metal aluminum layer, or, coat a fluorocarbon coating on one surface of the metal aluminum layer, and form a back protection layer on this surface of the metal aluminum layer;

[0028] B. Coating an adhesive on one side of the PET polyester film layer, and after drying, thermally pressing the side coated with the adhesive and the surface of the metal aluminum layer without the back protective layer to obtain the solar battery back sheet.

[0029] Preferably, in step B, the drying temperature is 70-100° C., and the drying time is 3-5 minutes. More preferably, the drying temperature is 80-90° C., and the drying time is 3-5 minutes. The temperature of thermoforming is 70-100°C, preferably 80-90°C.

[0030] As the common knowledge of those skilled in the art, before coating the adhesive on one sid...

Embodiment 1

[0038] (1) Mix PET resin 45kg, PVDF resin 35kg, PEN resin 18kg, TiO 2 Powder 1kg, antioxidant 168 1kg were mixed evenly, followed by drying, heating extrusion, forming, longitudinal stretching, transverse stretching, trimming and coiling to obtain the PET polyester film of this embodiment, with a film thickness of 150 μm;

[0039] (2) The PET polyester film obtained in step (1) is first degreased and corona treated, and then one side is coated with an adhesive (polyurethane-based heat-curing adhesive, polyurethane The mass ratio of isocyanic acid to isocyanic acid is 100:30), and dried at 90°C for 5 minutes, and the thickness of the adhesive layer formed after drying is 1 μm;

[0040] (3) The adhesive-coated side of the PET polyester film obtained in step (2) and the non-anodized side of the single-sided anodized aluminum foil (the thickness of the aluminum foil is 200 μm, and the thickness of the anodized layer is 20 μm) are press-molded at 90°C , to obtain the solar battery...

Embodiment 2

[0042] (1) Put 35kg of PET resin, 45kg of PTFE resin, 17kg of PEN resin, TiO 2 Powder 2kg, antioxidant 1010 1kg were mixed evenly, followed by drying, heating extrusion, forming, longitudinal stretching, transverse stretching, trimming and coiling to obtain the PET polyester film of this embodiment, with a film thickness of 200 μm;

[0043] (2) The PET polyester film obtained in step (1) is first degreased and corona treated, and then one side is coated with an adhesive (polyurethane-based heat-curing adhesive, polyurethane The mass ratio of isocyanic acid to isocyanic acid is 100:30), and dried at 80°C for 5 minutes, and the thickness of the adhesive layer formed after drying is 2 μm;

[0044] (3) The adhesive-coated side of the PET polyester film obtained in step (2) and the non-anodized side of the single-sided anodized aluminum foil (the thickness of the aluminum foil is 150 μm, and the thickness of the anodized layer is 15 μm) are press-molded at 80°C , to obtain the sol...

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Abstract

The invention provides a solar cell rear panel which sequentially comprises a back protection layer, a metal foil layer, an adhesive layer and a polyethylene terephthalate (PET) polyester film layer from bottom to top. The back protection layer is an anodic oxidation layer or a fluorocarbon coating. The invention further provides a preparation method for the solar cell rear panel and a solar cell module with the solar cell rear panel. The solar cell rear panel can guarantee high insulation and weather resistance and greatly reduces cost.

Description

technical field [0001] The invention belongs to the field of solar cells, and in particular relates to a solar cell backboard, a preparation method thereof, and a solar cell component. Background technique [0002] Solar cell modules are directly exposed to the atmosphere during use, and are subject to temperature changes, ultraviolet radiation and water vapor erosion. If it cannot resist the influence of environmental factors, its photoelectric conversion performance will be easily attenuated and lose its practical value. Therefore, the research on solar cell packaging materials is very important. Packaging materials include glass, film, backplane, aluminum frame and silicone. Among them, since the main material of the backplane has been monopolized by foreign companies, the supply was once in short supply, so the backplane has become the packaging material that attracts the most attention. [0003] In order to improve weather resistance and effectively block ultraviolet ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/048H01L31/18H01L31/042B32B15/09B32B15/04B32B15/20H01L31/049
CPCY02E10/50
Inventor 袁永乐秦世嵘关敬波
Owner BYD CO LTD
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