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Solar battery piece packaging glue structure and preparation method thereof

A technology of solar cells and encapsulation adhesives, which is applied in the direction of chemical instruments and methods, circuits, adhesives, etc., can solve the problems of reducing the reflection effect of reflective materials, increasing the optical path of incident light, and high cost, so as to reduce the water vapor transmission rate and reduce the Material cost, effect of avoiding equipment investment

Active Publication Date: 2014-06-18
仇桂芬
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can also avoid overflow very well, but the disadvantage is that, on the one hand, non-woven fabrics are made of polymers processed into fibers and then processed later, the cost is relatively high, and most non-woven fabric fibers are easy to bend. It is easy to deform when pulled, and it is difficult to avoid the generation of lines or patterns when laminating
In addition, a layer of transparent EVA film is added on the surface of the non-woven fabric to increase the optical path of the incident light. ) reduces the reflective effect of the reflective material
In addition, non-woven fabrics are highly crystalline materials, which are difficult to integrate with encapsulants and will introduce weak links

Method used

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  • Solar battery piece packaging glue structure and preparation method thereof
  • Solar battery piece packaging glue structure and preparation method thereof
  • Solar battery piece packaging glue structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A solar cell sheet encapsulation adhesive structure sequentially includes an encapsulation adhesive layer and a barrier film layer. The barrier film and the encapsulation adhesive layer are combined together. When laminating, the barrier film surface is close to the battery sheet, and the encapsulation adhesive layer is close to the backplane side. The fluidity of the barrier film is lower than that of the encapsulation adhesive layer, and the encapsulation adhesive layer is made of white EVA, and the entire body composed of the barrier film and the encapsulation adhesive is used as the whole of the back encapsulation adhesive.

[0039] preparation:

[0040] In terms of parts by mass, 100 parts of vinyl acetate content is 32wt%, MI is 40g / 10min of EVA pellets, 6 parts of rutile titanium dioxide (DuPont R105), 0.5 parts of γ-methacryloxypropyl trimethoxy silane, 1.5 parts tert-butyl-(2-ethylhexyl) monoperoxycarbonate, 1 part triallyl isocyanurate, 0.2 parts 2-hydroxy-4-...

Embodiment 2

[0046] A solar cell sheet encapsulation adhesive structure, comprising a layer of barrier film on the side close to the cell sheet and an encapsulation adhesive layer on the side close to the back plate or glass. The barrier film is combined with the encapsulation adhesive layer. The fluidity of the barrier film is less than that of the encapsulation adhesive layer. The encapsulation adhesive layer is made of white EVA. The overall glue is selected from the transparent EVA film on the market, such as Foster F806. The barrier film side is close to the cell sheet during lamination.

[0047] preparation:

[0048] In terms of parts by mass, 100 parts of vinyl acetate content is 32wt%, MI is 40g / 10min of EVA pellets, 6 parts of rutile titanium dioxide, 0.5 parts of γ-methacryloxypropyltrimethoxysilane, 1.5 Parts of tert-butyl-(2-ethylhexyl) monoperoxycarbonate, 1 part of triallyl isocyanurate, 0.2 parts of 2-hydroxy-4-n-octyloxybenzophenone after mixing machine to mix evenly, as...

Embodiment 3

[0054] A solar cell encapsulation adhesive structure, comprising a barrier film on the side of the cell, an encapsulation adhesive layer on the side of the back plate or glass, and an adhesive layer distributed on the side of the barrier film close to the cell. The barrier film is combined with the encapsulation adhesive layer and the adhesive layer. The fluidity of the barrier film is less than that of the encapsulation adhesive layer and the adhesive layer. The encapsulation adhesive layer is made of white EVA. With the barrier film, the adhesive layer and the The package formed by the package is used as the whole of the package on the back, and the package on the light-facing side is made of transparent EVA film on the market, such as Foster F806. The adhesive layer is placed close to the cells during lamination.

[0055] preparation:

[0056] In terms of parts by mass, add 6 parts of rutile titanium dioxide (DuPont R-105) and 0.5 parts of γ-methacryloxypropane to 100 part...

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Abstract

The invention relates to a solar battery piece packaging glue structure and a preparation method thereof. The structure comprises a packaging glue layer and at least one partitioning membrane layer, or comprises a packaging glue layer, at least one layer of partitioning membrane and at least one adhesive layer distributed on one side, which is close to a battery piece, of the partitioning membrane, wherein the partitioning membrane is compounded with the packaging glue layer, or the partitioning membrane is compounded with the packaging glue layer and the adhesive layer; the flowability of the partitioning membrane is smaller than that of the packaging glue layer. According to the solar battery piece packaging glue structure, as one layer of the partitioning membrane with very low flowability is compounded with the packaging glue and the flowability of the partitioning membrane self is lower than that of the packaging glue, the packaging glue is harder to overflow, and moreover a good partitioning function is achieved for overflowing of the packaging glue with high flowability. When the structure is laminated, the packaging glue of a cross-linking system with high flowability at a lower layer can be fused with the partitioning membrane with low flowability at an upper layer at high temperature, so that sufficient binding force can be still maintained.

Description

technical field [0001] The invention relates to an adhesive film structure, in particular to an adhesive structure for encapsulating solar cells and a preparation method thereof. Background technique [0002] Since the encapsulant on the back of the solar cell does not require high light transmission performance, an adhesive film with a low light transmission rate can be used, or some fillers can be added to increase the function and reduce the cost. For example, use glue with lower light transmittance to reduce costs while protecting the backplane and reduce the damage of ultraviolet rays to the backplane; add fillers with high reflectivity, such as TiO 2 The filler improves its reflectivity, thereby reflecting sunlight and being reabsorbed by the battery, increasing the power of the solar cell; adding thermally conductive fillers to improve the thermal conductivity of the backside encapsulant, reducing the impact of temperature on the efficiency of the battery, and so on. ...

Claims

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Application Information

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IPC IPC(8): C09J7/02H01L31/048
CPCY02E10/50B32B27/32B32B7/12B32B27/304B32B27/306B32B2457/12H01L31/0481
Inventor 仇桂芬
Owner 仇桂芬
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