Photovoltaic encapsulating material with high light transmittance

A packaging material, high light transmittance technology, applied in photovoltaic power generation, film/sheet without carrier, non-polymer adhesive additives, etc., can solve the problem of tarnishing, reduce the mechanical properties of materials, and reduce the UV resistance of EVA materials and other problems, to achieve the effect of reducing optical loss, reducing interface light reflection and light scattering, and improving photoelectric conversion efficiency

Inactive Publication Date: 2018-09-11
HANGZHOU FIRST APPLIED MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ultraviolet rays usually cause the aging of polymer materials, making them lose their luster and reduce the mechanical properties of materials. It is also because there is no UV absorber added that it is easy to reduce the UV resistance of EVA materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] This embodiment provides a packaging material, a photovoltaic packaging material with high light transmittance.

[0019] In this example, in terms of mass fraction, 100 parts by mass of ethylene-vinyl acetate copolymer with a mass content of VA (vinyl acetate) of 28%, add 10 parts by mass of polymethyl methacrylate, 1 part by mass of tert-butyl Isopropyl peroxycarbonate, 5 parts by mass of pentaerythritol triacrylate, 1 part by mass of KH550, 0.1 parts by mass of 2-hydroxy-4-n-octyloxybenzophenone, 0.1 parts by mass of bis-2 sebacate, 2,6,6-Tetramethylpiperidinol ester. Mix evenly, and the above mixture is pre-mixed, melt-extruded, cast into a film, cooled, slitting and winding to obtain the photovoltaic encapsulation material, which is denoted as E-1.

Embodiment 2

[0021] This embodiment provides a packaging material, a photovoltaic packaging material with high light transmittance.

[0022] In this example, in terms of mass fraction, 100 parts by mass of ethylene-1-hexane copolymer, 5 parts by mass of polyurethane resin, 1 part by mass of 2,5-dimethyl 2,5-bis( tert-butylperoxy) hexane, 5 parts by mass of pentaerythritol tetraacrylate, 1 part by mass of KH550, 0.1 part by mass of 2-hydroxyl-4-n-octyloxybenzophenone, 0.1 part by mass of sebacic acid bis- 2,2,6,6-Tetramethylpiperidinol ester. Mix evenly, and the above mixture is pre-mixed, melt-extruded, cast into a film, cooled, slitting and winding to obtain the photovoltaic packaging material, which is designated as E-2.

Embodiment 3

[0024] This embodiment provides a packaging material, a photovoltaic packaging material with high light transmittance.

[0025] In this example, in terms of mass fraction, 100 mass parts of ethylene-methyl methacrylate copolymer, 5 mass parts of polydiene diglycol dipropylene carbonate, 1 mass part of 1-bis(tertiary peroxide Butyl)-3,3,5-trimethylcyclohexane, 5 parts by mass of ethoxylated pentaerythritol tetraacrylate, 0.5 parts by mass of KH570, 0.5 parts by mass of KH550, 0.1 parts by mass of 2-hydroxyl-4-n-octyl Oxybenzophenone, 0.1 parts by mass of bis-2,2,6,6-tetramethylpiperidinol sebacate. Mix evenly, and the above mixture is pre-mixed, melt-extruded, cast into a film, cooled, slitting and winding to obtain the photovoltaic packaging material, which is marked as E-3.

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Abstract

The invention relates to a photovoltaic encapsulating material with high light transmittance. The photovoltaic encapsulating material is prepared by premixing 100 parts by weight of matrix resin or grafting modified matrix resin of the photovoltaic encapsulating material, 0.01 to 20 parts by weight of highly transparent resin with high light transmittance and/or high refractive index, and other auxiliary agents, and then carrying out melting, extruding, tape casting, film forming, cooling, cutting, and rolling. By introducing the highly transparent resin with high light transmittance and/or high refractive index into the encapsulating material system, the refractive indexes of glass, the front-layer encapsulating material, and a battery sheet can be perfectly matched; the light transmittance of the photovoltaic encapsulating material is increased; the intensity of light projected on the battery sheet is enhanced, thus the utilization rate of solar light is increased; the current and output power of the battery are increased; and the photovoltaic conversion efficiency is optimized and increased.

Description

technical field [0001] The invention belongs to the field of packaging materials for photovoltaic modules, and in particular relates to a photovoltaic packaging material with high light transmittance. Background technique [0002] Solar cells generate electricity using the photovoltaic effect that occurs when semiconductor materials such as silicon are irradiated by sunlight, directly converting solar radiation into electrical energy. Solar cells can only convert a small part of solar energy into electrical energy, because there are electrical losses and optical losses in the process of energy conversion in solar cells, which means that increasing the power of photovoltaic modules requires silicon wafers to absorb solar radiation in the largest range, and sunlight must be reduced The light loss when passing through the glass and the encapsulation film, so as the only "barrier" between the silicon wafer and the outer glass, in order to ensure the high photoelectric conversion...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J123/08C09J183/04C09J151/06C09J133/12C09J175/04C09J169/00C09J155/02C09J167/02C09J181/06C09J125/06C09J145/00C09J171/02C09J11/06C09J7/10H01L31/048H01L31/054
CPCC08L2205/03C08L2205/035C09J7/10C09J11/06C09J123/0815C09J123/0853C09J123/0869C09J151/06C09J183/04C09J2203/33C09J2301/408H01L31/0481H01L31/0543C08L33/12C08K5/132C08K5/3435C08L75/04C08L69/00C08L55/02C08L67/02C08L81/06C08L25/06C08L45/00C08L23/0815C08L71/02Y02E10/52
Inventor 魏梦娟桑燕侯宏兵熊曦
Owner HANGZHOU FIRST APPLIED MATERIAL CO LTD
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