Preparation method and preparation system of solar photovoltaic backboard

A photovoltaic backplane and preparation system technology, applied in the field of solar photovoltaic backplanes, can solve problems such as difficult control of product curing humidity, product peeling force needs to be improved, and product production is not stable enough, so as to achieve a high degree of automation, reduce labor costs, and process simple effect

Pending Publication Date: 2021-07-20
ZHONGTIAN PHOTOVOLTAIC MATERIALS +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The technical effect of this new technology described for making solar panels involves replacing traditional methods involving organics or volatile chemicals that are harmful to healthy environments such as acetone on workers' skin. This innovative solution uses no solvent like water but instead relies heavily on an adhesion agent called Solvay® (solidifying agents). By controlling processes during production, it can match well with different materials used together without leaving any residues behind after use. Additionally, its stability makes it less expensive than other alternatives while still being effective at absorbing light from sunlight. Overall, these improvements make manufacturing safer and easier compared to current technologies.

Problems solved by technology

This patented technical problem addressed by this patents relates to improving the efficiency and reliability of producing green solar cells on an organopolymer film (OPF) substrate made from polyvinyl butyral resin(PVB). Current methods involve applying adhesion agents like epoxy or acrylic acid esters onto PVB films before they go into curing processes at temperatures between 200°C-350°C. However, these conventional compositions have several drawbacks including long cure time required during manufacturing, excessive evaporation of volatile components after heat treatment, difficulty controlling temperature and moistness levels, and potential health hazards associated with chemical reactions involving certain compounds.

Method used

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  • Preparation method and preparation system of solar photovoltaic backboard
  • Preparation method and preparation system of solar photovoltaic backboard
  • Preparation method and preparation system of solar photovoltaic backboard

Examples

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preparation example Construction

[0047] see figure 1 , a method for preparing a solar photovoltaic backplane, comprising the following steps:

[0048] Step S1: Set the tension parameters of the substrate and the film, and control their continuous running speed to 10-600m / s.

[0049]In a specific embodiment, the unwinding tension of the substrate and the film is controlled to be 10-500N, the tension of the upper bridge is 10-500N, and the tension of the upper bridge is a preset initial tension value or a compensation force value that keeps the tension constant . Described substrate comprises polypropylene film (PP film), polyethylene terephthalate film (PET film), one or more composite films in polyimide film (PI film), wherein composite film It can be a multi-layer film composed of multiple layers of films of different materials, or a single-layer or multi-layer film composed of multiple materials. The covering film includes white polyvinylidene fluoride film (PVDF film), black polyvinylidene fluoride film,

Embodiment 5

[0073] Example 5: On the basis of Example 2, the white PVDF / PET composite film is also obtained by compounding this process, that is, the obtained product structure is white PVDF+solvent-free glue+PET composite film+solvent-free glue+O Film, the The unilateral initial peeling force of the product and the peeling force after PCT48h are all equivalent to Example 2.

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Abstract

The invention provides a preparation method and a preparation system of a solar photovoltaic backboard. The method comprises the following steps: setting tension parameters of a base material and a covering film, and controlling the continuous operation speed of the base material and the covering film to be 10-600m/s; coating a solvent-free adhesive with the solid content of 100% to one surface of the base material or the covering film through an adhesive melting roller and a transfer roller in sequence to form a gummed base material; and attaching the side, containing the solvent-free adhesive, of the adhesive-coated base material and the non-adhesive-coated covering film or the base material to each other through a composite roller, and then winding and curing to obtain the photovoltaic backboard. According to the preparation method, the solvent-free adhesive is adopted as an adhesive, good matching with a base material and a covering film is achieved through process control, multiple layers are bonded permanently and firmly, the composite process is stable, solvent evaporation is not needed, environment friendliness and energy conservation are better achieved, and the working procedure is simpler.

Description

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Claims

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Application Information

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Owner ZHONGTIAN PHOTOVOLTAIC MATERIALS
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