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Humidity-resisting solar cell backplate without adhesive and manufacturing method thereof

A solar cell and adhesive-free technology, which is applied in the field of solar backplanes, can solve the problems of poor UV resistance of AAA backplanes, solar cell performance degradation, pulverization and cracking, etc., and achieves good interlayer connection and is conducive to environmental protection , The effect of productivity improvement

Inactive Publication Date: 2014-04-16
DSM SUNSHINE SOLAR TECH (SUZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the AAA backsheet has poor resistance to ultraviolet radiation, and it will be powdered and cracked in outdoor environments, resulting in deterioration or failure of solar cell performance.

Method used

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  • Humidity-resisting solar cell backplate without adhesive and manufacturing method thereof
  • Humidity-resisting solar cell backplate without adhesive and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1、3-4

[0051] like figure 1 As shown, an adhesive-free and heat-resistant solar cell backsheet is composed of a weather-resistant layer 2 , a first connection layer 4 , a structural reinforcement layer 6 , a second connection layer 8 and a reflective layer 12 sequentially compounded.

[0052] The weather-resistant layer 2 is a polyvinylidene fluoride (PVDF) film, or a fluorine material alloy layer modified with an inorganic material. The fluorine material alloy layer modified by the inorganic material is formed by first making the fluorine material alloy from the fluorine material and then modifying the inorganic material. Specifically, the weather-resistant layer 2 is a polyvinylidene fluoride (PVDF) film, or made of polyvinylidene fluoride (PVDF), polymethyl methacrylate (PMMA) and titanium dioxide (TiO 2 ) blended.

[0053] The first connection layer 4 includes component A and component B in any proportion and capable of cross-linking. Component A is an ethylene copolymer or bl...

Embodiment 2

[0059] like figure 2 As shown, an adhesive-free and heat and humidity resistant solar cell backsheet differs from Embodiments 1 and 3-4 in that:

[0060] It consists of a weather-resistant layer 14, a first connection layer 16, a structural reinforcement layer 18 and a reflective layer 22 that are sequentially compounded.

[0061] Reflective layer 22 is made of low density polyethylene (LLDPE), ethylene propylene diene monomer (EPDM), anti-ultraviolet stabilizer and titanium dioxide (TiO 2 ) blended and modified.

[0062] The thicknesses of the weather-resistant layer 14, the first connection layer 16, the structural reinforcement layer 18 and the reflective layer 22 of the back plate are 30um, 15um, 300um and 20um respectively.

Embodiment 1-4

[0063] See Table 1 for the specific parameters of the solar back panels of Examples 1-4.

[0064] A kind of manufacturing method of the present invention is described below with the manufacturing method of embodiment 1-2 solar back panel, and this method comprises the following steps:

[0065] (1) The materials of the first and second connection layers, the material of the structural reinforcement layer and the material of the reflective layer are respectively granulated by an extruder to obtain the plastic particles of the first and second connection layers, the plastic particles of the structural reinforcement layer and the reflective layer The plastic particles are used as spare; the fluorine film used as the weather-resistant layer is prepared according to the formula of the weather-resistant layer by the common method in this industry.

[0066] (2) The plastic particles of the first and second connection layers, the plastic particles of the structural reinforcement layer ...

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Abstract

The invention discloses a humidity-resisting solar cell backplate without an adhesive. The humidity-resisting solar cell backplate comprises a weather-proof layer, a connecting layer, a structure enhancement layer and a reflecting layer, wherein the weather-proof layer, the connecting layer, the structure enhancement layer and the reflecting layer are successively compound. The humidity-resisting solar cell backplate is characterized in that the connecting layer comprises a component A and a component B according to any matching ratio, the component A and the component B can generate the cross bonding, the component A is vinyl copolymer or a mixing material and contains a carboxylic acid group, and the component B is vinyl copolymer or a mixing material and contains an epoxy group; the structure enhancement layer is composed of polypropylene, modified polypropylene or an alloy, the alloy is the alloy of polypropylene and engineering plastic or the alloy of the modified polypropylene and the engineering plastic. The solar cell backplate provided by the invention has the advantages that one hand, the connection is firm, the humidity and aging resistance property is strong, the other hand, according to the preparation method, the traditional adhesive can be omitted, the production rate is improved, and the solar cell backplate is environment-friendly.

Description

technical field [0001] The invention relates to the field of photovoltaic power generation, in particular to a solar backboard. Background technique [0002] The human demand for energy continues to grow, and the current situation of coal and oil as the main energy sources will not be sustainable. The use of renewable energy is the only way to solve human energy challenges. Solar photovoltaic power generation is the most important type of renewable energy. All countries in the world are scrambling to develop solar photovoltaic power generation, and formulate and implement a road map for photovoltaic power generation. The global solar photovoltaic industry has grown at a rate of more than 50% in the past five years, and it is predicted that it will continue to develop at a rate of more than 30% in the next ten years. [0003] Solar backsheets are widely used in solar cell (photovoltaic) components. They are located on the back of solar panels and protect and support the cel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B27/30B32B27/28H01L31/049B29C47/06
CPCY02E10/50H01L31/049
Inventor 赵若飞蔡书义黄伟
Owner DSM SUNSHINE SOLAR TECH (SUZHOU) CO LTD
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