Composite packaging material and photovoltaic module packaged by same

A technology of encapsulation materials and polymer materials, applied in the field of photovoltaic modules, can solve problems such as low resistivity, long lamination cycle, and long POE curing time

Active Publication Date: 2020-10-02
JINKO GREEN ENERGY SHANGHAI MANAGEMENT CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing packaging material POE has problems such as long curing time, long lamination cycle, and low capacity utilization, which increases the packaging cost
In addition, limited by conventional packaging materials such as EVA and other materials with low resistivity and poor insulation, a certain width distance between the charged body inside the module and the fixed frame (metal frame) needs to be maintained, thereby increasing the photovoltaic module. Material consumption and weight

Method used

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  • Composite packaging material and photovoltaic module packaged by same
  • Composite packaging material and photovoltaic module packaged by same
  • Composite packaging material and photovoltaic module packaged by same

Examples

Experimental program
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Effect test

preparation example Construction

[0090]The preparation process and various manufacturing processes of the photovoltaic module may be known common manufacturing procedures of the photovoltaic module, and the embodiment of the present invention makes no special limitation on the preparation of the photovoltaic module. Exemplarily, the preparation process of the photovoltaic module can be:

[0091] (1) Cell laser slicing: Process the entire cell into slices according to the set specifications.

[0092] (2) Welding: Automatic string welding cuts, shapes and welds the welding materials into certain strings according to the set spacing requirements.

[0093] (3) Laying: Conventional laying of glass, composite packaging materials, backplane / glass, etc.

[0094] (4) Lamination: set the appropriate temperature and time to cross-link the film material.

[0095] (5) Frame curing.

[0096] (6) Power test and classification.

[0097] Based on the above description, it can be seen that the photovoltaic module provided ...

Embodiment 1

[0100] A composite packaging material includes improved polyimide and EVA materials, and the composite packaging adhesive film is prepared by co-extruding the improved polyimide and EVA materials. Wherein, improved polyimide comprises the raw material of following mass parts:

[0101] 70-80 parts of polyimide, 2-3 parts of polyperfluoroethylene propylene, 2 parts of fluorine-containing linear polyimide and 2-4 parts of tetramethyldisiloxane.

[0102] The edge body resistivity of the composite packaging material is 1.5-1.8×10 17 Ω·cm, the breakdown voltage strength is 80-100KV / mm.

[0103] The improved polyimide in the composite packaging material has a width of 20-30mm and a thickness of 0.2mm; it can meet the requirement of shortening the blank width of the edge of the composite packaging adhesive film component glass and battery sheet from 15mm to 12mm, reducing component glass, Film material consumption reduces component weight by about 0.4%.

Embodiment 2

[0105] A composite packaging material includes improved polyimide and EVA materials, and the composite packaging adhesive film is prepared by co-extruding the improved polyimide and EVA materials. Wherein, improved polyimide comprises the raw material of following mass parts:

[0106] 80-92 parts of polyimide, 1-3 parts of polyperfluoroethylene propylene, 4-6 parts of fluorine-containing linear polyimide and 3-5 parts of tetramethyldisiloxane.

[0107] The edge body resistivity of the composite packaging material is 3.2-4.7×10 17 Ω·cm, the breakdown voltage strength is 120-180KV / mm.

[0108] The width of the improved polyimide in the composite packaging material is greater than the width of the internal EVA material, and the thickness is 0.1mm; it can meet the requirement of shortening the blank width of the composite packaging film module glass and the edge of the cell from 15mm to 10mm, reducing the component glass , Film material consumption, reduce component weight by ab...

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Abstract

The invention provides a composite packaging material and a photovoltaic module packaged by the same, and relates to the technical field of photovoltaic modules. At least part of the area of the composite packaging material comprises a high-insulation-performance material, and the high-insulation-performance material comprises polyimide, a modifier and modified polyimide. According to the invention, the insulation performance of the packaging material can be improved, the blank area of the module edge is reduced, the weight of the photovoltaic module is reduced, and the comprehensive cost of the photovoltaic module is further reduced.

Description

technical field [0001] The present application relates to the technical field of photovoltaic components, in particular to a composite packaging material and a photovoltaic component packaged with it. Background technique [0002] Solar energy is a clean energy. The working principle of photovoltaic modules is to convert solar energy into electrical energy based on the photovoltaic effect. Existing crystalline silicon photovoltaic modules are generally stacked sequentially in the order of front tempered glass, front adhesive film layer or front encapsulation film layer, cell sheet layer, rear adhesive film layer or rear encapsulation film layer, back plate or rear tempered glass. Laminate encapsulation. Wherein, the packaging film layer is generally made of polyolefin elastomer (Polyolefin elastomer, POE) or ethylene-vinyl acetate copolymer (ethylene-vinyl acetate copolymer, EVA) material. [0003] However, the existing packaging material POE has problems such as long curi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/30C09J179/08C09J11/06C09J11/08C09J7/10C09J123/08H01L31/048
CPCC09J7/30C09J179/08C09J11/06C09J11/08C09J7/10C09J123/0853H01L31/0481C08L2205/025C08L2205/03C08L2201/10C08L2203/206C08L2203/204C09J2203/33C09J2423/04C08L79/08C08L27/18C08K5/5419Y02E10/50H01L31/048C09J7/245C09J7/38C09J2301/408C09J2301/414C09J2203/322C09J2423/046C09J2479/08
Inventor 于琨刘长明张昕宇高贝贝麻增智
Owner JINKO GREEN ENERGY SHANGHAI MANAGEMENT CO LTD
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