Solar cell rear panel and production method thereof

A solar cell and backplane technology, applied in chemical instruments and methods, circuits, photovoltaic power generation, etc., can solve the problems of low service life and unfavorable processing of solar battery backplanes, and achieve improved overall mechanical properties, good adhesion, Good electrical insulation effect

Inactive Publication Date: 2013-07-03
吉林省东能电力工程有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the existing solar battery backplane has a l

Method used

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  • Solar cell rear panel and production method thereof

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Example Embodiment

[0024] Such as figure 1 As shown, a solar cell back sheet includes a PET substrate 1. The front surface of the PET substrate 1 is coated with a fluorine coating layer 4, and the reverse surface of the PET substrate 1 is provided with a modified adhesive layer 2 The polyvinyl chloride film layer 3, the thickness of the modified polyvinyl chloride film layer 3 is 23-28 μm, which provides the backplane with better mechanical properties, electrical insulation properties, water vapor barrier properties and weather resistance. The fluorine coating The thickness of the layer 4 is 20-30μm, it has good light resistance and weather resistance, and can block moisture and air from entering. The thickness of the adhesive layer 2 is 8-12μm, which is convenient for bonding, has good bonding effect, and is reliable. The PET substrate 1 has a thickness of 245-265 μm, and has good reliability and practical performance. The adhesive layer 2 is made of polyurethane and has a good adhesion effect. ...

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Abstract

The invention relates to a solar cell rear panel which comprises a PET (polyester) substrate, wherein a fluorine coating layer is applied to the front surface of the PET substrate; and a modified polyvinyl chloride film layer pasted by an adhesive layer is arranged on the rear surface of the PET substrate. The solar cell rear panel is produced by the steps of stirring the fluorine coating, applying the fluorine coating, drying the fluorine coating, stirring the adhesive, applying the adhesive, stirring and drying the adhesive, compounding the modified polyvinyl chloride film, winding, slitting and checking. The solar cell rear panel has the advantages as follows: the modified polyvinyl chloride film is taken as an outer protection layer of the solar cell rear panel as the modified polyvinyl chloride film has the characteristics of good mechanical property, heat resistance, self-extinguishing property, wear resistance, chemical resistance, penetration resistance, oxygen and carbon dioxide barrier property, boiling resistance and electric insulativity, so that the overall mechanical property, the electric insulativity and the scratch resistance of the rear panel are improved; the real panel is easy to process; and the service life of the rear panel is prolonged.

Description

technical field [0001] The invention relates to a solar cell backboard and a production method. Background technique [0002] The role of the solar battery backsheet is to provide excellent UV resistance, aging resistance, weather resistance and electrical insulation properties for the battery components, which play a key role in the service life, output power, safety and reliability of the battery, and determine the quality of the backsheet The key lies in the characteristics of the outer protective layer. Among the backplanes currently used on the market, most of the outer protective layers use fluorine coating or fluorine film. The widely used fluorine coatings mainly include PTFE and FEVE. The fluorine film mainly There are two types of PVF and PVDF. China Patent No. 201110385024X discloses a solar battery backsheet. The outer protective layer is made of PVDF film layer. The fluorine content directly affects the performance indicators of the backsheet. Traditional fluori...

Claims

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Application Information

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IPC IPC(8): B32B27/08H01L31/048B32B37/12H01L31/049
CPCY02E10/50
Inventor 顾建平
Owner 吉林省东能电力工程有限公司
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