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Preparation method of solar cell back plate

A technology for solar cells and backsheets, applied in the field of preparation of solar cell backsheets, can solve problems such as complex processes, and achieve the effects of increased tensile fracture strength and excellent mechanical strength

Inactive Publication Date: 2017-10-03
NANTONG QIANGSHENG PHOTOVOLATIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Its process is too complicated

Method used

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  • Preparation method of solar cell back plate
  • Preparation method of solar cell back plate
  • Preparation method of solar cell back plate

Examples

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Embodiment 1

[0038] This embodiment relates to the preparation of a solar battery back sheet, comprising the following steps:

[0039] 1. Large-scale preparation of graphene oxide (optimized Hummers method for large-scale preparation of graphene oxide, washing 3 to 5 times and then ultrasonicating under acidic conditions, which simplifies the washing process, greatly reduces the degree of pollution and reduces the cost);

[0040] The method for preparing graphene oxide by Hummers method after optimization is:

[0041] 1) Add 460mL of concentrated sulfuric acid into a 2L beaker, and the temperature of the ice bath is 0°C;

[0042] 2) Add graphite powder, and add 60g of KMnO after the dispersion is uniform 4 , during which the temperature is kept below 10°C;

[0043]3) Raise the temperature of the solution to 35°C. After 2h, add another 920mL of distilled water for another 1.5h (add 30mL in equal portions to keep the temperature below 50°C, that is, add in batches, add 30mL in each batch),...

Embodiment 2

[0052] This embodiment relates to the preparation of a solar battery back sheet, comprising the following steps:

[0053] 1. Large-scale preparation of graphene oxide (optimized Hummers method for large-scale preparation of graphite oxide, washing 3 to 5 times and then ultrasonicating under acidic conditions, which simplifies the washing process, greatly reduces the degree of pollution and reduces the cost);

[0054] 2. The acidic graphene oxide dispersion and modifiers (such as silane coupling agent, titanate coupling agent, aluminate coupling agent, phosphate ester coupling agent, dodecyl dimethyl oxide, etc.) Amine, cetyl dimethyl amine oxide, octadecyl dimethyl amine oxide, dodecyl bromide, hexadecane bromide, octadecyl bromide, octadecyl ammonium bromide, imidazole morpholine, morpholine guanidine, triazine derivatives, etc.) molecules for reaction grafting, under acidic conditions, the grafting of the above-mentioned modifiers on graphene oxide sheets can be catalyzed, a...

Embodiment 3

[0058] This embodiment relates to the preparation of a solar battery back sheet, comprising the following steps:

[0059] 1. Large-scale preparation of graphene oxide (optimized Hummers method for large-scale preparation of graphite oxide, washing 3 to 5 times and then ultrasonicating under acidic conditions, which simplifies the washing process, greatly reduces the degree of pollution and reduces the cost);

[0060] 2. The acidic graphene oxide dispersion and modifiers (such as silane coupling agent, titanate coupling agent, aluminate coupling agent, phosphate ester coupling agent, dodecyl dimethyl oxide, etc.) Amine, cetyl dimethyl amine oxide, octadecyl dimethyl amine oxide, dodecyl bromide, hexadecane bromide, octadecyl bromide, octadecyl ammonium bromide, imidazole morpholine, morpholine guanidine, triazine derivatives, etc.) molecules for reaction grafting, under acidic conditions, the grafting of the above-mentioned modifiers on graphene oxide sheets can be catalyzed, a...

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Abstract

The invention provides a preparation method of a solar cell back plate. The method comprises the following steps of uniformly mixing a graphene filler and resin sections, performing mixing, extrusion, drum sizing and bidirectional stretching in sequence to obtain a solar cell back plate, carrying out the low-temperature plasma treatment on the surface of the solar cell back plate, coating the surface of the back plate of the solar cell by using a coating, and drying and solidifying to obtain the product. Compared with the same type of patents, through the grapheme modification of the PET slice, the invention can realize thermal stability, self-cleaning performance, anti-aging performance, gas / water resistance, and ultraviolet resistance of the PET substrate of the back plate of the solar cell.

Description

technical field [0001] The invention relates to a method for preparing a solar cell backboard, belonging to the field of photovoltaic technology. Background technique [0002] Photovoltaic power generation is a new energy source. Through the photovoltaic effect, solar energy can be converted into electrical energy, which can be used as a green solution to replace traditional electrical energy. Photovoltaic cell modules are assembled from various semiconductor components, and are generally made of glass, battery silicon wafers, EVA, and backsheet materials by hot pressing, so they must be protected to reduce the impact of environmental effects such as moisture, oxygen, and ultraviolet rays. and destruction. Therefore, backsheets with excellent electrical insulation, interlayer bond strength, weather resistance, UV resistance, and moisture barrier properties play an important protective role in photovoltaic cell modules. [0003] Patent CN104231701A introduces a method for p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/049
CPCY02E10/50H01L31/049
Inventor 拜永孝沙嫣沙晓林高文生
Owner NANTONG QIANGSHENG PHOTOVOLATIC TECH
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