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Photovoltaic packaging adhesive film, photovoltaic module and preparation method of photovoltaic module

A technology for encapsulating adhesive film and photovoltaics, which is applied in photovoltaic power generation, electrical components, semiconductor devices, etc., can solve the problems of complex structure and inability to adapt the compound wire film, and achieve the effect of simple structure and good adaptability

Active Publication Date: 2021-01-29
RISEN ENERGY (CHANGZHOU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above method uses a composite wire film with a special structure to package the battery sheet. The structure of the composite wire film is complex, and when the photovoltaic module is produced, the structure of the composite wire film cannot adapt to the existing multi-busbar equipment.

Method used

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  • Photovoltaic packaging adhesive film, photovoltaic module and preparation method of photovoltaic module
  • Photovoltaic packaging adhesive film, photovoltaic module and preparation method of photovoltaic module
  • Photovoltaic packaging adhesive film, photovoltaic module and preparation method of photovoltaic module

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preparation example Construction

[0053] As an example, the method for preparing the photovoltaic encapsulation adhesive film 110 provided in the embodiment of the present application includes: relatively moving the adhesive film body relative to the electron cathode ray gun emitting electron beams along a preset path, so that the electron beams penetrate The body on the path is set so that the area where the film body is in contact with the electron beam is cross-linked to form a target pre-cross-linked area.

[0054] It can be understood that, in the embodiment of the present application, the distribution form of the first area 111 and the second area 112 is not limited, as long as the photovoltaic encapsulation adhesive film 110 is applied to the photovoltaic module 100, the welding ribbon 130 can be connected with the second area respectively. The abutment between the first area 111 and the second area 112 enables the area of ​​the soldering ribbon 130 corresponding to the first area 111 to be better packag...

Embodiment 1

[0066] A photovoltaic encapsulation adhesive film 110, such as image 3 As shown, the photovoltaic encapsulation adhesive film 110 is composed of an adhesive film body. Wherein, the adhesive film body is composed of three first regions 111 and two second regions 112 .

[0067] Wherein, the extension directions of the opposite two sets of edges of the adhesive film body are respectively a first preset direction and a second preset direction, and the first preset direction and the second preset direction are perpendicular to each other. Each first area 111 and each second area 112 extend along the first predetermined direction from one side edge of the adhesive film body to the other side edge, and the distance between two adjacent second areas 112 is A , the width of the second region 112 is B, and B / A is 1 / 9. A plurality of first regions 111 and a plurality of second regions 112 are alternately arranged in a second predetermined direction, and the edge of the adhesive film b...

Embodiment 2

[0069] A photovoltaic module 100 includes a surface glass, a first encapsulation film, a plurality of first soldering strips 130 , a battery sheet 120 , a plurality of second soldering strips 130 , a second encapsulation film and a back plate 150 arranged in sequence.

[0070]Wherein, both the first encapsulating adhesive film and the second encapsulating adhesive film are the photovoltaic encapsulating adhesive film 110 provided in the first embodiment. A plurality of fine grid lines 121 are provided on the upper surface of the battery sheet 120 close to the first encapsulant film and the back surface close to the second encapsulant film. On each surface of the battery sheet 120 , each thin grid line 121 extends along a first preset direction, and a plurality of thin grid lines 121 are distributed at intervals along a second preset direction. The plurality of first welding strips 130 are distributed alternately along the first predetermined direction, and the plurality of sec...

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Abstract

The embodiment of the invention provides a photovoltaic packaging adhesive film, a photovoltaic module and a preparation method of the photovoltaic module, and belongs to the technical field of photovoltaic power generation. The photovoltaic packaging adhesive film comprises an adhesive film body, the adhesive film body is provided with a first region and a plurality of second regions distributedin the first area at intervals, the crosslinking degree of the first region is not higher than 20%, and the crosslinking degree of the second regions is not lower than 50%. The photovoltaic module comprises a battery piece, a solder strip and the photovoltaic packaging adhesive film, and fine grid lines are arranged on the surface of the battery piece. One side of the solder strip abuts against the fine grid lines, and the other side of the solder strip abuts against the first region and the second region. Under the condition that the connection reliability of the welding strip and the grid lines is ensured, the Ag slurry consumption of a heterojunction cell can be reduced, and the packaging adhesive film is simple in structure and good in adaptability to existing multi-main-grid equipment.

Description

technical field [0001] The present application relates to the technical field of photovoltaic power generation, and in particular, to a photovoltaic encapsulation adhesive film, a photovoltaic module and a preparation method thereof. Background technique [0002] Heterojunction cells have significant advantages such as high efficiency, simple manufacturing steps, good temperature coefficient, and superior power generation performance. Under the circumstance that the growth rate of the efficiency of rear emitter passivation technology (PERC) cells is slowing down, the heterojunction cell technology has become a new research hotspot. In the manufacturing process of heterojunction cells, cells with metal grid lines on the front and back surfaces are used, and the series connection between the cells is realized through copper soldering strips coated with tin. In the current industry, multi-bar technology such as 9 busbars (9BB), 12 busbars (12BB) or 18 busbars (18BB) is used at...

Claims

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Application Information

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IPC IPC(8): H01L31/048H01L31/18
CPCH01L31/048H01L31/0481H01L31/18Y02E10/50Y02P70/50
Inventor 黄强
Owner RISEN ENERGY (CHANGZHOU) CO LTD
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