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A kind of adhesive-free and heat and humidity resistant solar battery back sheet and its manufacturing method

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, deterioration of solar battery performance, pulverization and cracking, etc., and achieves good interlayer connection and is conducive to environmental protection , The effect of productivity improvement

Active Publication Date: 2016-10-05
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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  • A kind of adhesive-free and heat and humidity resistant solar battery back sheet and its manufacturing method
  • A kind of adhesive-free and heat and humidity resistant solar battery back sheet and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-2、4-6

[0055] Such as 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.

[0056] 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 inorganic materials is first made of fluorine material alloy and then modified by inorganic materials. Specifically, in Examples 4 and 6, polyvinylidene fluoride (PVDF), polymethyl methyl acrylate (PMMA) and titanium dioxide (TiO 2 ) blended.

[0057] The first connecting layer 4 is modified by blending a silane coupling agent and an ethylene acrylate copolymer, and the weight ratio of the silane coupling agent and the ethylene acrylate copolymer is 0.05-5:100, more specifically 0.1- 4:100.

[0058] Th...

Embodiment 3

[0063] Such as figure 2 As shown, an adhesive-free and heat and humidity resistant solar cell backsheet differs from Embodiments 1-2 and 4-6 in that:

[0064] 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.

[0065] The weather-resistant layer 14 is a polyvinyl fluoride (PVF) film.

[0066] The structural reinforcement layer 18 is made of modified polypropylene, which is modified by blending polypropylene, thermal stabilizers and inorganic fillers.

[0067] 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.

[0068] 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 backplane are 25um, 40um, 150um, and 150um, respect...

Embodiment 1-6

[0069] See Table 1 for the specific parameters of the solar backboards of Examples 1-6.

[0070] A kind of manufacturing method of the present invention is described below with the manufacturing method of embodiment 1-3 solar back plate, and this method comprises the following steps:

[0071] (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 for backup; the fluorine film used as a weather-resistant layer is prepared by a common method in the industry for use.

[0072] (2) The plastic particles of the first and second connection layers, the plastic particles of the structural reinforcement layer and the plastic particles of the reflective layer pr...

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Abstract

The invention relates to a solar battery backplate free of adhesive and resistant to damp and heat. The solar battery backplate comprises a weather-resistant layer, a connecting layer, a structure reinforcing layer and a reflection layer which are all sequentially compounded. The connecting layer is formed by a silane coupling agent and ethylene acrylate copolymer by blending modification, and the weight proportion of the silane coupling agent and ethylene acrylate copolymer is (0.05-5):100. The structure reinforcing layer is made of polypropylene, modified polypropylene or alloy. The alloy is alloy of polypropylene and engineering plastics or alloy of modified polypropylene and the engineering plastics. On one hand, the solar battery backplate is has connecting firmness and is high in resistance to damp and heat and aging; on the other hand, the traditional adhesive is omitted according to a manufacturing method for the solar battery backplate, the productivity is improved, and the manufacturing method is favorable for environmental protection.

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 Patents(China)
IPC IPC(8): H01L31/049H01L31/18
CPCH01L31/049Y02E10/50
Inventor 赵若飞蔡书义黄伟
Owner DSM SUNSHINE SOLAR TECH (SUZHOU) CO LTD
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