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Heat-conducting weatherable solar cell packaging material

A technology for solar cells and packaging materials, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of accelerated aging and degradation of EVA film, affecting the service life of battery components, and reducing photoelectric conversion efficiency, and can extend the service life. Conducive to component heat dissipation and improved compatibility

Active Publication Date: 2012-09-12
SUZHOU FIRST PV MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, although the ethylene-vinyl acetate copolymer (EVA) film used as the packaging material for solar cell modules has a good packaging effect, its thermal conductivity is poor, which makes it difficult for the module to dissipate heat during use.
The temperature rise of the module will not only reduce its photoelectric conversion efficiency, but also accelerate the aging and degradation of the EVA film, which will eventually affect the service life of the battery module

Method used

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  • Heat-conducting weatherable solar cell packaging material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] In terms of parts by mass, add 5 parts of sodium bentonite with an average size of 50 μm to 100 parts of water, stir ultrasonically until uniformly dispersed, heat to 50°C, stir and add 100 parts of cetyl trimethyl with a concentration of 0.5% dropwise The ammonium bromide aqueous solution was stirred at constant temperature for 2 hours, suction filtered, and the filtrate was washed with deionized water until the silver nitrate solution was no longer precipitated. After the filter cake was dried, it was ground into powder and passed through a 100-mesh sieve to obtain treated bentonite.

[0033]Add 10 parts of treated sodium bentonite to 100 parts of absolute ethanol, stir ultrasonically until the filler is evenly dispersed, then add dropwise a solution containing 100 parts of methyl methacrylate and 10 parts of azobisisobutyronitrile, and heat to 80°C , after stirring and reacting at constant temperature for 6 hours, suction filtration, drying, grinding into powder, and ...

Embodiment 2

[0037] In terms of parts by mass, add 20 parts of sodium montmorillonite with an average size of 50 μm to 100 parts of water, stir ultrasonically until uniformly dispersed, heat to 80°C, stir and add 100 parts of hexadecyl bromide with a concentration of 3% dropwise Pyridine aqueous solution, stirred at constant temperature for 4 hours, suction filtered, washed with deionized water until the silver nitrate solution no longer precipitated, the filter cake was dried, ground into powder, passed through a 200-mesh sieve to obtain processed montmorillonite.

[0038] Add 20 parts of treated montmorillonite to 100 parts of absolute ethanol, stir ultrasonically until the filler is evenly dispersed, then add dropwise a solution containing 200 parts of butyl acrylate and 20 parts of azobisisobutyronitrile, heat to 90°C, and keep the temperature constant After stirring and reacting for 8 hours, suction filter, dry, grind into powder, and pass through a 200-mesh sieve to obtain butyl acryl...

Embodiment 3

[0042] In terms of parts by mass, add 30 parts of sodium bentonite with an average size of 100 μm to 100 parts of water, stir ultrasonically until uniformly dispersed, heat to 90°C, stir and add 100 parts of octadecyltrimethyl chloride with a concentration of 5% dropwise The ammonium chloride aqueous solution was stirred at constant temperature for 6 hours, suction filtered, and the filtrate was washed with deionized water until the silver nitrate solution was no longer precipitated. After the filter cake was dried, it was ground into powder and passed through a 200-mesh sieve to obtain treated bentonite.

[0043] Add 5 parts of treated bentonite to 100 parts of absolute ethanol, stir ultrasonically until the filler is evenly dispersed, then add dropwise a solution containing 50 parts of butyl methacrylate and 1 part of azobisisoheptanonitrile, heat to 70°C, and keep the temperature constant After stirring and reacting for 2 hours, suction filter, dry, grind into powder, and pa...

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Abstract

The invention provides a heat-conducting weatherable solar cell packaging material. The heat-conducting weatherable solar cell packaging material is a packaging resin film which has the thickness of 0.1 to 0.8mm and is prepared by mixing, melt extrusion, film tape-casting formation and cutting rolling of raw materials of 80 to 100 parts by weight of ethylene vinyl acetate, 0 to 20 parts by weight of one or more vinyl copolymers, 0.5 to 30 parts by weight of an acrylate-modified silicate filler, 0.1 to 10 parts by weight of one or more peroxide cross-linking agents as auxiliaries, 0.05 to 5 parts by weight of one or more phenol or phosphite ester antioxygens as auxiliaries, and 0.01 to 5 parts by weight of one or more hindered amine light stabilizers as auxiliaries. Through addition of the acrylate-modified silicate filler in the matrix resins, filler dispersity, assembly heat dissipation, assembly photoelectric conversion efficiency and packaging material weatherability are improved.

Description

technical field [0001] The invention relates to a heat-conducting and weather-resistant solar cell packaging material, which belongs to the field of new energy. Background technique [0002] In recent years, with the constant thirst for clean energy around the world, the solar photovoltaic industry has flourished. Among them, crystalline silicon solar cells are the most widely used solar cells. At present, under standard test conditions (STC, the battery operating temperature is 25±2°C, and the light source irradiance is 1000W / m 2 , and have AM 1.5 solar irradiance distribution conditions), the photoelectric conversion efficiency of the crystalline silicon solar cell module can reach more than 20%. However, only when the operating temperature of the battery is 25±2°C in sunny winter, the irradiance of the light source in summer can reach 1000W / m 2 , the distribution of solar irradiance in spring is only AM 1.5. Therefore, the actual working conditions of the solar cell m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J123/08C09J11/06C09J11/04C09J7/00H01L31/048
CPCY02E10/50
Inventor 桑燕周光大候宏兵张恒林建华
Owner SUZHOU FIRST PV MATERIAL CO LTD
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