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Solar photovoltaic battery assembly transparent backboard composite film and preparation method thereof

A technology of photovoltaic cells and composite films, applied in the field of composite films, can solve the problems of shortened service life, pollution and high import price of battery components, and achieve the effects of good water vapor transmission rate, good chemical stability and excellent performance.

Active Publication Date: 2016-03-23
MING CROWN ADVANCED MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because the fluorine film has been in a monopoly position and the import price is expensive, coupled with the influence of the fluorine film itself and external conditions, water vapor easily permeates the back plate, making the battery components vulnerable to water vapor erosion and shortening the service life; in addition, Fluorine film pollutes the environment during the production process. Therefore, finding a low-cost, high-performance or even fluorine-free backsheet has become the appeal of many backsheet manufacturers.

Method used

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  • Solar photovoltaic battery assembly transparent backboard composite film and preparation method thereof

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Embodiment 1

[0056] like figure 1 As shown, the solar photovoltaic cell module transparent backboard composite film of this embodiment includes the first weather-resistant layer, the second weather-resistant layer and the base layer in sequence from top to bottom, between the first weather-resistant layer and the second weather-resistant layer, the second weather-resistant layer An adhesive layer is arranged between the second weather-resistant layer and the base layer, and the two adhesive layers are transparent glue adhesive layers 4, and the thickness of the two transparent glue adhesive layers 4 is 11 μm; the first weather-resistant layer is transparent weather-resistant PC (polycarbonate) film 1 with a thickness of 25 μm; the second weather-resistant layer is transparent weather-resistant PET (polyethylene terephthalate) film 2 with a thickness of 150 μm; the base layer is transparent linear low-density LLDPE ( Polyethylene) film 3 with a thickness of 50 μm;

[0057] The two transpar...

Embodiment 2

[0066] The difference between this embodiment and Embodiment 1 is that: the thickness of the two transparent glue bonding layers 4 of this embodiment is 14 μm; the thickness of the transparent weather-resistant PC film 1 is 100 μm; the thickness of the transparent weather-resistant PET film 2 is 300 μm; the thickness of the transparent linear low-density LLDPE film 3 is 150 μm.

[0067] The two transparent glue bonding layers 4 both include 0.5 part of ultraviolet absorber UV-326.

[0068] The preparation method of the transparent backplane composite film of the solar photovoltaic cell module of the present embodiment comprises the following preparation steps:

[0069] a, the modified polymer resin LLDPE-g of 95 parts of polycarbonate, 5 parts of UV absorber UV-326, 5 parts of ZnO, 0.4 parts of light hindered amine light stabilizer 770, 3 parts by weight - MAH is mixed and stirred evenly to obtain a modified PC mixture, and the modified PC mixture is prepared by a casting met...

Embodiment 3

[0077] The difference between this embodiment and Embodiment 1 is that: the thickness of the two transparent glue bonding layers 4 of this embodiment is 12.5 μm; the thickness of the transparent weather-resistant PC film 1 is 50 μm; the thickness of the transparent weather-resistant PET film 2 The thickness is 250 μm; the thickness of the transparent linear low-density LLDPE film 3 is 90 μm.

[0078] Both transparent glue bonding layers 4 include 1 part of UV absorber UV-1577.

[0079] The preparation method of the transparent backplane composite film of the solar photovoltaic cell module of the present embodiment comprises the following preparation steps:

[0080] a, the parts by weight are 100 parts of polycarbonate, 1 part of UV absorber UV-1577, 1 part of TiO 2 , 0.6 parts of light hindered amine light stabilizer 622, 5 parts of modified polymer resin DBAE-g-PE are mixed and stirred evenly to obtain a modified PC mixture, and the modified PC mixture is prepared by casting...

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Abstract

The invention relates to the technical field of a composite film, and particularly to a solar photovoltaic battery assembly transparent backboard composite film and a preparation method thereof. The solar photovoltaic battery assembly transparent backboard composite film comprises a first weather-resistant layer, a second weather-resistant layer and a substrate layer, wherein the first weather-resistant layer, the second weather-resistant layer and the substrate layer are successively arranged from top to bottom. The first weather-resistant layer is a transparent weather-resistant polycarbonate (PC) film and has a thickness of 25-100 [mu]m. The second weather-resistant layer is a transparent weather-resistant polyester (PET) film and has a thickness of 150-300 [mu]m. The substrate layer is a transparent linear low-density polyethylene (LLDPE) film and has a thickness of 50-150 [mu]m. According to the solar photovoltaic battery assembly transparent backboard composite film, a traditional poly(vinylidene fluoride) (PVDF) film is replaced by the transparent weather-resistant PC film, and weather resistance and light transmittance of the back board on which the solar photovoltaic battery assembly transparent backboard composite film is applied. Not only is cost reduced, but also environment pollution caused by a fluoride film is greatly reduced. Furthermore the solar photovoltaic battery assembly transparent backboard composite film has excellent binding property with a polyethylene vinylacetate (EVA) film.

Description

technical field [0001] The invention relates to the technical field of composite films, in particular to a composite film for a transparent back plate of a solar photovoltaic cell module and a preparation method thereof. Background technique [0002] As the international traditional energy is increasingly scarce, the global demand for new energy has become the focus of worldwide attention. As a new energy, solar energy is not only inexhaustible and inexhaustible, but also has the characteristics of clean, pollution-free, safe and pollution-free. It has attracted global attention and realized the industrialization of energy photovoltaic conversion. [0003] The solar photovoltaic cell backsheet film is an important part of the solar photovoltaic cell assembly. It is used to protect the solar cell from the corrosion of the atmospheric environment and ensure that the solar cell assembly can last up to 25-30 years outdoors. At present, the most commonly used in China is the TPT...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/049H01L31/18B32B27/08B32B27/36B32B33/00
CPCY02E10/50Y02P70/50
Inventor 方艳张鹏纪孝熹吴松
Owner MING CROWN ADVANCED MATERIAL CO LTD
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