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Solar cell back plane and preparation method thereof

A solar cell and backplane technology, applied in chemical instruments and methods, circuits, photovoltaic power generation, etc., can solve problems such as difficult to reach the service life, and achieve the effects of low cost, long service life, and outstanding support and protection

Active Publication Date: 2014-07-23
合肥长阳新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Even so, the service life of the backsheet using PET as the structural reinforcement layer is theoretically 25 years, but it is found in the PCT aging experiment that it is actually difficult to reach this service life

Method used

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  • Solar cell back plane and preparation method thereof
  • Solar cell back plane and preparation method thereof
  • Solar cell back plane and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0037] The preparation method of the solar battery back plate provided by the invention comprises the following steps:

[0038] (1) Biaxially stretched polyester film is produced on a biaxially stretching machine by extrusion casting method. The temperatures of each section of the extruder are 180°C, 220°C, 275°C, 275°C, 275°C, and 280°C. The cooling drum speed is controlled at 30r / min, the cooling drum temperature is 60°C, and the temperature difference range is 1°C; the longitudinal stretching temperature is controlled between 90°C-120°C, the stretching ratio is controlled at 3.8-4.0, and the transverse stretching temperature is 120°C-140°C, the stretch ratio is controlled at 3.8-4.0, and the temperature error range is 0.5°C.

[0039] (2) The biaxially stretched polyester film obtained in step (1) is rolled and placed on the coating line for off-line coating. Under the condition of heat curing for 30min-40min, after heat curing, the degree of crosslinking of the adhesive re...

Embodiment 1

[0050] The solar backsheet was prepared according to the above method, wherein the thickness of the weather-resistant layer was 25 μm, the thickness of the structural reinforcement layer was 150 μm, and the thickness of the adhesive layer was 5 μm. The relevant properties of the obtained backsheet are shown in Table 1.

Embodiment 2

[0052] The solar backsheet was prepared according to the above method, wherein the thickness of the weather-resistant layer was 30 μm, the thickness of the structural reinforcement layer was 200 μm, and the thickness of the adhesive layer was 10 μm. The relevant properties of the obtained backsheet are shown in Table 1.

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Abstract

The present invention relates to the technical field of solar photovoltaic cells, in particular to a solar cell back plate and a preparation method thereof. In order to further improve the weather resistance of the solar cell back plate and prolong its service life, the present invention provides a solar cell back plate and its Preparation. The solar battery back sheet provided by the present invention includes a weather-resistant layer and a structural reinforcement layer, and the material of the weather-resistant layer is polyetherimide; both sides of the structural reinforcement layer are provided with weather-resistant layers. The solar battery back plate has simple structure, easy-to-obtain material, excellent performance, simple preparation method and process, and is easy to operate.

Description

technical field [0001] The invention relates to the technical field of solar photovoltaic cells, in particular to a solar cell backboard and a preparation method thereof. Background technique [0002] As a green and inexhaustible energy source, solar energy is undoubtedly the best choice to replace traditional thermal power generation. Since solar cells need to be exposed to outdoors for a long time, the cells in photovoltaic modules must be protected to prevent the influence and erosion of environmental factors such as water vapor, oxygen, and ultraviolet rays in the atmosphere. The solar backsheet is one of the accessories of the whole solar cell. It mainly plays the role of mechanical support and protection of the cell from the penetration of environmental factors. Therefore, how to improve the weather resistance of the backsheet has always been the research focus of the industry. [0003] Solar battery backplanes in the prior art mainly include the following types: [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/049B32B27/08B32B7/12
CPCY02E10/50
Inventor 不公告发明人
Owner 合肥长阳新材料科技有限公司
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