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Single-layer adhesive film, multi-layer co-extrusion adhesive film and photovoltaic cell module

A multi-layer co-extrusion, film technology, applied in photovoltaic power generation, electrical components, circuits, etc., can solve the problem of reduced light transmittance of photovoltaic modules, and achieve the effect of improving photoelectric conversion rate, utilization rate, and performance.

Active Publication Date: 2021-01-26
常州汉韦聚合物有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above existing technical solutions have the following defects: during the use of the prepared adhesive film and photovoltaic modules, due to the presence of the first active group and / or the second active group, the light transmittance of the photovoltaic module is reduced

Method used

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  • Single-layer adhesive film, multi-layer co-extrusion adhesive film and photovoltaic cell module
  • Single-layer adhesive film, multi-layer co-extrusion adhesive film and photovoltaic cell module
  • Single-layer adhesive film, multi-layer co-extrusion adhesive film and photovoltaic cell module

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Such as figure 1 and figure 2 As shown, a single-layer adhesive film includes: a key functional layer 1 , in which a number of pores 2 are formed by physical or chemical foaming. Among them, the key functional layer 1 is made of electrical insulating resin, which can be but not limited to polyolefin, ethylene-vinyl acetate copolymer, polyvinyl butyral, ionomer, polyurethane, silica gel, epoxy resin, etc. One or more of resin and EPDM rubber. In this embodiment, transparent polyolefin is selected as the base material for the key functional layer 1 .

[0034] The chemical method is to add a foaming agent inside, and then foam to form pores 2 . The diameter of the pores 2 is 1-10 microns, and the thickness of the key functional layer 1 is 500 microns.

[0035] Wherein, the key functional layer 1 is cured by UV curing or heat curing. UV curing is UV curing. Thermal curing uses high temperature to cure the electrical insulating resin.

Embodiment 2

[0037] Such as image 3 and Figure 4 As shown, a multi-layer co-extruded adhesive film includes at least one layer of the above-mentioned single-layer adhesive film and at least one layer of conventional adhesive film 3; the conventional adhesive film 3 is made of transparent polyolefin material. The conventional adhesive film 3 is prepared by a film preparation method for photovoltaics.

Embodiment 3

[0039] A photovoltaic cell assembly, which is obtained by encapsulating the single-layer adhesive film obtained in Example 1 or the multi-layer co-extruded adhesive film obtained in Example 2.

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Abstract

The invention belongs to the technical field of photovoltaic cells, and particularly relates to a single-layer adhesive film, a multi-layer co-extrusion adhesive film and a photovoltaic cell module, and the single-layer adhesive film, the multi-layer co-extrusion adhesive film and the photovoltaic cell module comprise key function layers; the key function layer is provided with a plurality of airholes. And the diameters of the air holes are 1-10 microns. The key functional layer is composed of an electrically insulating resin. The electrical insulating resin is composed of one or more of polyolefin, an ethylene- vinyl acetate copolymer, polyvinyl butyral, an ionomer, polyurethane, silica gel, epoxy resin and ethylene propylene diene monomer. The single-layer adhesive film, the multi-layerco-extrusion adhesive film and the photovoltaic cell module have the effects that the sunlight utilization rate of the photovoltaic module is improved, so that the photoelectric conversion rate of the photovoltaic module is improved, and the performance of the photovoltaic module is improved.

Description

technical field [0001] The invention belongs to the technical field of photovoltaic cells, and in particular relates to a single-layer adhesive film, a multi-layer co-extruded adhesive film and a photovoltaic cell assembly. Background technique [0002] Solar photovoltaic cells (photovoltaic cells for short) are used to directly convert the sun's light energy into electrical energy. At present, silicon solar cells based on silicon are widely used in terrestrial photovoltaic systems, which can be divided into monocrystalline silicon, polycrystalline silicon, and amorphous silicon solar cells. [0003] Photovoltaic cells are usually encapsulated under the front glass by adhesive film, so the optical properties of the adhesive film play a crucial role in the light absorption and conversion rate of photovoltaic cells. [0004] The existing Chinese patent with the notification number CN111560228A discloses a single-layer packaging adhesive film, a composition for preparing it, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18B32B27/06B32B27/32B32B3/24B32B27/30B32B27/40B32B27/38B32B25/08B32B25/14B32B33/00H01L31/048C08L23/02C08L23/08C08L29/14C08L75/04C08L83/04C08L63/00C08L23/16
CPCH01L31/0481C08J5/18B32B3/266B32B5/18B32B27/32B32B27/065B32B25/08B32B33/00C08J2323/02C08J2323/08C08J2329/14C08J2375/04C08J2383/04C08J2363/00C08J2323/16B32B2266/025B32B2266/0221B32B2266/0278B32B2266/0271B32B2266/0207B32B2457/12B32B2457/10B32B2307/41Y02E10/50
Inventor 林金汉陈玲施瑕玉林俊良
Owner 常州汉韦聚合物有限公司
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