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Processing method for improving the qualification rate of white eva film for photovoltaic modules

A photovoltaic module and processing method technology, applied in sustainable manufacturing/processing, photovoltaic power generation, electrical components, etc., can solve the problems of low pass rate of white film modules and restrict the market proportion of white film modules, so as to reduce production costs, The effect of improving the pass rate

Active Publication Date: 2020-11-06
杭州东光科技有限公司
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0003] White film is a new type of packaging material with high reflection function, which can effectively improve the utilization of light by cells, reduce the packaging loss of components, and improve the photoelectric conversion efficiency of solar cells. However, white films are often used to prepare solar cell modules. It is a conventional EVA production process, and the qualification rate of white film modules is not high, which is 7% lower than that of conventional EVA modules, which seriously restricts the market proportion of white film modules

Method used

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Embodiment Construction

[0016] The preferred embodiments of the present invention are described in detail below, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0017] A processing method for improving the qualified rate of preparation of white EVA adhesive film for photovoltaic modules, comprising the steps of:

[0018] (1) Cutting and standing: first select the weight range K of the white film, 400≧K (g / 10cm 2 )≧380; the white film matches the glass size when cutting, the width ratio H of the white film to the glass is: 99.6%≥H≥99.3%, the longitudinal length ratio L of the white film to the glass is: 99.7%≥L≥99.5%; Before cutting and stacking on the line, keep the material placed horizontally without wrinkles, the interval between cutting and use is less than 2 hours, and the stacking height is less than 30 layers;

[0019] (2) Anti-static treatment:...

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Abstract

The invention relates to a processing method for improving the preparation qualification rate of a white EVA adhesive film of a photovoltaic module, and comprises the processes: cutting and standing,anti-static treatment, lamination treatment, lamination module transfer and lamination packaging, so that the qualification rate of the EVA module is greatly improved, and the production cost of an enterprise is greatly reduced.

Description

technical field [0001] The invention relates to the field of photovoltaic materials, in particular to a processing method for improving the qualified rate of white EVA adhesive film for photovoltaic modules. Background technique [0002] White EVA is commonly known as white film. White film components include crystalline silicon solar cells, photovoltaic tempered glass and photovoltaic backplanes. There is a layer of transparent EVA with high light transmittance on the upper surface of the solar cell, and a layer of white film on the lower surface. The surface is provided with photovoltaic glass, and the lower surface of the white film layer is provided with a layer of photovoltaic backplane. [0003] White film is a new type of packaging material with high reflection function, which can effectively improve the utilization of light by cells, reduce the packaging loss of components, and improve the photoelectric conversion efficiency of solar cells. However, white films are o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/18H01L31/048
CPCH01L31/048H01L31/18Y02E10/50Y02P70/50
Inventor 谈秋一陈卫王怀峰
Owner 杭州东光科技有限公司