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Solar cell backplane and manufacturing method thereof

A solar cell and backplane technology, which is applied in chemical instruments and methods, circuits, photovoltaic power generation, etc., can solve the problems of lack of water vapor barrier film on the backplane, lack of solar battery backplane, high water vapor barrier performance, etc., to achieve improved water vapor Barrier performance, cost reduction, and the effect of improving elastic modulus

Inactive Publication Date: 2014-06-04
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The backsheet uses HPF base cloth layer and PTFE film, which improves the rigidity of the backsheet compared with PET and PVF films; however, the backsheet uses two layers of expensive PTFE film, resulting in no cost advantage , in addition, the backsheet lacks a film with excellent water vapor barrier performance, which cannot guarantee that the entire backsheet has high water vapor barrier performance
[0008] In summary, there is still a lack of a solar cell backsheet with high modulus and excellent comprehensive performance.

Method used

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  • Solar cell backplane and manufacturing method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1. Preparation of materials:

[0032] Prepare chlorotrifluoroethylene resin coating, PET film with a thickness of 25 μm, polyurethane glue, and glass fiber cloth with a thickness of 200 μm.

[0033] 2. Preparation of the backplate:

[0034] (1) Surface cleaning and plasma treatment of PET film and glass fiber cloth. After treatment, the surface energy of the PET film was measured to be 48 dynes.

[0035] (2) Coat the outer surface of the PET film and the two surfaces of the glass fiber cloth with fluororesin, the coating thickness is 50 microns, and then the Dry for 5 seconds respectively to obtain a fluororesin film / PET film two-layer composite film and a fluororesin film / glass fiber cloth / fluororesin film three-layer composite film. By measurement, the thickness of the fluororesin film was 25 micrometers.

[0036] (3) The two sides of the three-layer composite film of fluororesin film / glass fiber cloth / fluororesin film prepared in step (2) are coated with glue, an...

Embodiment 2

[0041] 1. Preparation of materials:

[0042] Prepare Chlorotrifluoroethylene resin coating, PET film with a thickness of 50 μm, acrylic glue, and glass fiber cloth with a thickness of 300 μm.

[0043] 2. Preparation of the backplate:

[0044] (1) Pretreat the PET film and glass fiber cloth; the pretreatment process includes surface cleaning and surface corona treatment. The surface energy of the PET film was measured to be 49 dynes.

[0045] (2) Coat the outer surface of the PET film and the two surfaces of the glass fiber cloth with fluororesin with a coating thickness of 20 microns, and then dry them at 120°C, 180°C, 260°C, 220°C, and 100°C for 5 Seconds, the fluororesin film / PET film two-layer composite film and the fluororesin film / glass fiber cloth / fluororesin film three-layer composite film were respectively obtained. By measurement, the thickness of the fluororesin film was 10 micrometers.

[0046] (3) The two sides of the three-layer composite film of fluororesin...

Embodiment 3

[0051] 1. Preparation of materials:

[0052] Prepare tetrafluoroethylene resin coating, PET film with a thickness of 30 μm, acrylic glue, and glass fiber cloth with a thickness of 100 μm.

[0053] 2. Preparation of the backplate:

[0054] (1) Pretreat the PET film and glass fiber cloth; the pretreatment process includes surface cleaning and surface corona treatment. The surface energy of the PET film was measured to be 49 dynes.

[0055] (2) Coat the outer surface of the PET film and the two surfaces of the glass fiber cloth with fluororesin, the coating thickness is 20 microns, and then the Dry for 5 seconds respectively to obtain a fluororesin film / PET film two-layer composite film and a fluororesin film / glass fiber cloth / fluororesin film three-layer composite film. By measurement, the thickness of the fluororesin film was 11 micrometers.

[0056] (3) The two sides of the three-layer composite film of fluororesin film / glass fiber cloth / fluororesin film prepared in step...

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Abstract

The invention discloses a solar cell backplane and a manufacturing method of the solar cell backplane; and the solar cell backplane comprises a glass fiber cloth base body layer, four fluororesin film layers, two polyethylene terephthalate (PET) film layers and two adhesive layers, wherein a fluororesin film, a PET film, the adhesive layer, a fluororesin film, glass fiber cloth, a fluororesin film, the adhesive layer, a PET film and a fluororesin film are sequentially arranged. After the multiple layers of fluororesin films are adopted by the solar cell backplane, the weather fastness of the backplane is greatly improved; after the glass fiber cloth is adopted as base material, the solar cell backplane has high voltage resistance, high strength, high modulus and extremely high flame retardant property; and the backplane is guaranteed to have extremely high water vapor separation performance by adopting a double-layer PET structure.

Description

technical field [0001] The invention relates to a solar cell backboard. technical background [0002] Traditional energy sources such as coal and petroleum are still the main energy sources in today's society. However, with the daily consumption of conventional energy and the resulting global pollution and climate problems, people are turning their attention to renewable energy, and hope that renewable energy can change the current energy structure of mankind to maintain human sustainable development. Continuous development. Among them, solar energy has become the focus of attention due to its unique advantages. At present, the main ways for humans to use solar energy are: light-to-heat conversion, light-to-heat conversion to electricity, and light-to-electricity conversion (ie, photovoltaic power generation). Among them, photovoltaic power generation is favored for its cleanliness and safety, and has achieved considerable development in recent years. Governments of vari...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/049B32B27/08H01L31/18
CPCY02E10/50
Inventor 杨卫国项宏福
Owner JIANGSU UNIV OF SCI & TECH