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Reflective film protective layer with acid and alkali resistance for photovoltaic module and manufacturing method thereof

A technology of photovoltaic modules and manufacturing methods, which is applied in the field of solar power generation, can solve problems such as reducing the utilization rate of light energy of cells, reducing the life of reflective films, and corrosion of plated metals, so as to improve utilization rates, increase power generation, and prevent corrosion. Effect

Active Publication Date: 2018-09-28
ZHONGTIAN PHOTOVOLTAIC MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are 2-3 solder strips with a width of about 2-3mm on each of the existing solar cells, and this part of the light is lost, because the main material of the solder ribbons on the solar cell is metal tin, due to the influence of metal tin on sunlight Reflection belongs to diffuse reflection, so the utilization of sunlight is very low, so a reflective film attached to the welding belt came into being
However, under the perennial sunlight, the EVA as the packaging material will decompose and produce acetic acid, which will corrode the microstructure of the reflective film and the coating metal on the surface of the microstructure, thereby making the reflective film invalid; in addition, the microstructure and surface of the reflective film Under the perennial irradiation of ultraviolet rays, the coated metal will also be oxidized and degraded, which greatly reduces the life of the reflective film and reduces the utilization rate of light energy of the battery sheet.

Method used

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  • Reflective film protective layer with acid and alkali resistance for photovoltaic module and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Preparation of reflective film protective layer for photovoltaic modules with acid and alkali resistance

[0036] The preparation method of the reflective film protective layer for photovoltaic modules with acid and alkali resistance is as follows:

[0037] 1. Precision coating process: use PET substrate as the base layer, and use laminating equipment to coat UV-curable glue on the PET substrate through a mold roller with microstructure. The UV curing glue is acrylate UV curing glue, the coating speed of UV curing glue is 25m / min, the temperature of UV curing glue is room temperature, and the molding pressure is 3kg / cm 2 , choose H-type electrodeless lamp as the UV curing light source, so as to form a prism structure on the PET substrate and form a microstructure layer;

[0038] 2. Aluminum plating: Vacuum coating is used to evaporate metal aluminum on the surface of PET after forming a prism structure. The evaporation method is metal wire evaporation. The aluminum raw...

Embodiment 2

[0045] Preparation of reflective film protective layer for photovoltaic modules with acid and alkali resistance

[0046] The preparation method of the reflective film protective layer for photovoltaic modules with acid and alkali resistance is as follows:

[0047] 1. Precision coating process: Use laminating equipment to coat the PET substrate as the base layer, and use laminating equipment to coat the UV-curable glue on the PET substrate through a mold roller with a microstructure. The UV curing glue is acrylate UV curing glue, the coating speed of UV curing glue is 25m / min, the glue temperature is room temperature, and the molding pressure is 3kg / cm 2 , choose H-type electrodeless lamp as the UV curing light source, so as to form a prism structure on the PET substrate and form a microstructure layer;

[0048] 2. Aluminum plating: Vacuum coating is used to evaporate metal aluminum on the surface of PET after forming a prism structure. The evaporation method is metal wire eva...

Embodiment 3

[0055] Preparation of reflective film protective layer for photovoltaic modules with acid and alkali resistance

[0056] The preparation method of the reflective film protective layer for photovoltaic modules with acid and alkali resistance is as follows:

[0057] 1. Precision coating process: Use laminating equipment to coat the PET substrate as the base layer, and use laminating equipment to coat the UV-curable glue on the PET substrate through a mold roller with a microstructure. The UV curing glue is acrylate UV curing glue. The coating speed of UV curing glue is 25m / min, the glue temperature is room temperature, and the molding pressure is 3kg / cm2. Forming a prism structure, forming a microstructure layer;

[0058] 2. Aluminum plating: Vacuum coating is used to evaporate metal aluminum on the surface of PET after forming a prism structure. The evaporation method is metal wire evaporation. The aluminum raw material is high-purity aluminum strip with a purity of 99.99%. No...

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Abstract

The invention discloses a reflective film protective layer with acid and alkali resistance for a photovoltaic module and a manufacturing method thereof, belongs to the field of solar power generation,and relates to a functional protective layer of a reflective film used on a photovoltaic welding tape. The functional protective layer having acid and alkali resistance and an ultraviolet shielding effect, which is applied to the microstructure surface of the reflective film, resists acid and alkali corrosion while shielding and absorbing ultraviolet to a certain extent, thereby prolonging the service life of the reflective film, reducing light waste and improving the photovoltaic power generation efficiency. The reflective film protective layer comprises the adhesive layer, the base layer, the microstructure layer, the reflective layer and the functional acid-alkali protective layer, wherein the adhesive layer is arranged below the base layer, the reflective film protective layer with acid and alkali resistance for a photovoltaic module is bonded to the photovoltaic module through the adhesive layer, the microstructure layer is arranged on the base layer, the reflective layer is arranged on the microstructure layer, and the functional acid-alkali protective layer is arranged on the reflective layer.

Description

technical field [0001] The invention discloses a protective layer of a reflective film for a photovoltaic module with an acid and alkali resistance function and a manufacturing method thereof, belonging to the field of solar power generation, and relates to a functional protective layer of a reflective film used on a photovoltaic ribbon. Apply a functional protective layer on the surface of the microstructure of the reflective film that is resistant to acid and alkali and has ultraviolet shielding effect. Photovoltaic power generation efficiency. Background technique [0002] With the continuous development of the economy, the demand for energy to support economic development is also increasing year by year, and the environmental pollution caused by the extraction and use of traditional fossil energy has become an increasingly serious problem with the rapid economic development. Therefore, finding a kind of clean and efficient energy has become the direction of energy refor...

Claims

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Application Information

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IPC IPC(8): H01L31/0216H01L31/18C09J7/29C09J7/30C09J123/08
CPCC09J7/29C09J7/30C09J123/08C09J2203/322C09J2301/122C09J2301/16C09J2301/30C09J2400/10C09J2423/04C09J2467/006H01L31/02168Y02E10/50Y02P70/50
Inventor 王同心刘文韬殷镭城薛群山沈一春
Owner ZHONGTIAN PHOTOVOLTAIC MATERIALS
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