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A double-sided photovoltaic module using a transparent plastic backsheet and its preparation process

A technology of photovoltaic modules and transparent plastics, applied in photovoltaic power generation, electrical components, semiconductor devices, etc., can solve the problems of poor weather resistance and anti-aging performance, easy bending deformation, delamination, and cracking of components, so as to improve weather resistance and durability. The effect of anti-aging ability, anti-oxidation improvement, and improvement of tolerance ability

Active Publication Date: 2021-08-06
ECONESS ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Photovoltaic modules are devices that directly convert light energy into electrical energy through the photoelectric effect. In the photovoltaic industry, various researches have been carried out on its components. The solar backsheet is located on the back of the photovoltaic module, which protects and supports the cells. Double-sided photovoltaic modules generally use glass as the backsheet. When there is no frame, the module is easy to bend and deform, resulting in cell cracks and glass bursts, and yellowing, delamination, and fragmentation. Transparent plastic backsheets and glass Compared with the backsheet, its weather resistance and aging resistance are poor

Method used

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  • A double-sided photovoltaic module using a transparent plastic backsheet and its preparation process
  • A double-sided photovoltaic module using a transparent plastic backsheet and its preparation process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Take n-butanol, cetyltrimethylammonium bromide and cyclohexane, mix and stir for 10min, add titanium chloride solution, add lanthanum chloride and cerium chloride, the molar ratio of titanium chloride to titanium chloride is 1:0.01, Stir for 30 minutes, then add 4 mol / L ammonia water to adjust the pH value of the solution to 8, stir for 2 hours, let stand and age for 36 hours to obtain precipitate A; take 0.4 mol / L ammonia solution, add the precipitate A produced by aging in the above operation , fully washed to obtain precipitate B, another acetone was added to absolute ethanol to make a solution, added to the above operation to obtain precipitate B, fully washed, and finally washed with deionized water to obtain precipitate C; platinum, silane , mixed evenly with the above precipitate C, at this time the molar ratio of titanium ions to platinum and silicon ions is 1:0.010:0.001, and after vacuum drying at 60°C for 30min, put it into a furnace and roast at 600°C in an a...

Embodiment 2

[0078] Mix n-butanol, cetyltrimethylammonium bromide and cyclohexane and stir for 15 minutes, add titanium chloride solution, add lanthanum chloride and cerium chloride, the molar ratio of titanium chloride to titanium chloride is 1:0.03, Stir for 38 minutes, then add 5 mol / L ammonia water to adjust the pH value of the solution to 8.5, stir for 4 hours, let stand and age for 36 hours to obtain precipitate A; take 0.5 mol / L ammonia solution, add the precipitate A produced in the above operation , fully washed to obtain precipitate B, another acetone was added to absolute ethanol to make a solution, added to the above operation to obtain precipitate B, fully washed, and finally washed with deionized water to obtain precipitate C; platinum, silane , mixed evenly with the above precipitate C, at this time the molar ratio of titanium ions to platinum and silicon ions is 1:0.03:0.006, and after vacuum drying at 70°C for 45min, put it into a furnace and bake at 700°C in an ammonia atm...

Embodiment 3

[0089] Take n-butanol, cetyltrimethylammonium bromide and cyclohexane, mix and stir for 10-20min, add titanium chloride solution, add lanthanum chloride and cerium chloride, and the molar ratio to titanium chloride is 1: 0.04, stirred for 45 minutes, then added 6mol / L ammonia water to adjust the pH value of the solution to 9, stirred for 5 hours, left to age for 36 hours, and obtained precipitate A; took 0.6mol / L ammonia solution, and added the precipitate produced by aging in the above operation Substance A is fully washed to obtain precipitate B, and another acetone is added to absolute ethanol to make a solution, which is added to the above operation to obtain precipitate B, fully washed, and finally washed with deionized water to obtain precipitate C; , silane, mixed evenly with the above precipitate C, at this time the molar ratio of titanium ions to platinum and silicon ions is 1:0.05:0.010, and after vacuum drying at 80°C for 60min, put it into a furnace at 800°C in an a...

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Abstract

The invention discloses a double-sided photovoltaic module adopting a transparent plastic backboard and a preparation process thereof, which comprises a coated glass, a battery sheet and a backboard, the battery sheet is located between the coated glass and the backboard, and the coated glass The lower side of the battery sheet is connected to the battery sheet through the first EVA adhesive film, and the lower part of the battery sheet is connected to the back plate through the second EVA adhesive film. The present invention can improve the surface energy of the PET layer through the surface treatment process, so that the PET layer and the fluorine-containing PVDF layer and the PVF layer are bonded more closely, and the PET layer contains aluminum silicate and silicon dioxide and the coating on the PVDF layer, which can Improve the tolerance of the backsheet to external stimuli, effectively improve its strength and anti-aging ability, prolong the service life, and at the same time improve the ability to block ions, prevent ions from migrating in the module, alleviate the PID effect in the photovoltaic module, and improve the backplane The ability to suppress the PID effect is suitable for widespread promotion and use.

Description

technical field [0001] The invention relates to the field of photovoltaics, in particular to a double-sided photovoltaic module using a transparent plastic back plate and a preparation process thereof. Background technique [0002] Photovoltaic modules are devices that directly convert light energy into electrical energy through the photoelectric effect. In the photovoltaic industry, various researches have been carried out on its components. The solar backsheet is located on the back of the photovoltaic module, which protects and supports the cells. Double-sided photovoltaic modules generally use glass as the backsheet. When there is no frame, the module is easy to bend and deform, resulting in cell cracks and glass bursts, and yellowing, delamination, and fragmentation. Transparent plastic backsheets and glass Compared with the backsheet, its weather resistance and aging resistance are poor. Therefore, we propose a double-sided photovoltaic module with a transparent plast...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/048H01L31/049H01L31/18B32B27/36B32B27/08B32B27/30B32B27/18B32B33/00
CPCB32B17/00B32B17/06B32B27/08B32B27/18B32B27/304B32B27/36B32B33/00H01L31/048H01L31/1876H01L31/049Y02E10/50
Inventor 赵卫东徐进陶杰顾彬王志强张天品
Owner ECONESS ENERGY
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