Pre-crosslinked photovoltaic module and photovoltaic module packaging system

Abstract

The utility model discloses a pre-crosslinking photovoltaic assembly, which belongs to the technical field of photovoltaic assemblies and comprises a battery piece, a glue film glass pre-crosslinking layer is laid on the front face of the battery piece, and a glue film backboard pre-crosslinking layer is laid on the back face of the battery piece. Through holes are evenly distributed in the glue film backboard pre-crosslinking layer. The utility model further discloses a photovoltaic module packaging system which comprises the pre-crosslinking photovoltaic module, a crosslinking layer feeding machine, a typesetting machine and a series welding machine. By adopting the adhesive film glass pre-crosslinking layer and the adhesive film backboard pre-crosslinking layer, the adhesive film laying step in the photovoltaic module production process is omitted, and the effects of accelerating the production takt and reducing waste generated in the production process are achieved; after the backboard with the pre-crosslinking layer is used, the size of the backboard can be reduced, the water vapor permeation resistance of the assembly is improved, meanwhile, the perforation rate in the assembly manufacturing process is greatly improved, the improved packaging system can avoid the bad problem caused by adhesive film laying, the assembly production efficiency is improved, and then the productivity and the yield are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic modules, in particular to a pre-crosslinked photovoltaic module. Background Art

[0002] A photovoltaic module, also called a solar panel, is the most important component in a solar power generation system.

[0003] Currently, the structure of a photovoltaic module is usually as Figure 1 shown, successively including a glass layer 1, a first adhesive film layer 2, a battery cell 3, a second adhesive film layer 4, and a backplane layer 5. The production is carried out using the encapsulation system as Figure 2 shown. The encapsulation system is as follows: glass is loaded through a glass loader 61, the adhesive film is cut by an adhesive film cutting machine 62 and then the adhesive film is laid through an adhesive film laying machine 63, the battery cells are automatically welded by a welding robot, typesetting is carried out through a typesetting machine 64, and the bus bar is welded through a string welding machine 65. Then, the following operations are carried out in sequence: backplane / adhesive film laying, backplane / glass laying, pre-layer inspection, and lamination process.

[0004] In the existing photovoltaic module encapsulation production system, the adhesive film laying link requires the cooperation of an adhesive film cutting machine 62 for adhesive film cutting operation. After the bus bar is welded, the second adhesive film layer 4 needs to be laid, and then the backplane is laid. The two adhesive film laying operations have high precision requirements for the adhesive film laying machine 63. The inventor believes that such a photovoltaic module encapsulation production system will first generate waste in the laying process of the first adhesive film layer 2, affecting the working environment of the photovoltaic module encapsulation workshop; secondly, due to the delamination of the adhesive film and the glass, problems such as laying deviation, adhesive film bulging, adhesive film missing are likely to occur in the laying process of the first adhesive film layer 2, and when using POE material, adhesive film slipping is extremely likely to occur; due to the large gap between the glass and the adhesive film, there will also be a problem of blurring when taking EL and appearance inspection pictures. These problems will all lead to defective products in the photovoltaic module encapsulation production process, affecting the production capacity and production cost of photovoltaic module encapsulation. Summary of the Utility Model

[0005] In order to overcome the defects in the prior art that in the photovoltaic module encapsulation production process, the working environment of the photovoltaic module encapsulation workshop and product quality are affected due to the adhesive film laying process, and the production capacity and production cost of photovoltaic module encapsulation are affected.

[0006] In view of at least one of the above technical problems, the utility model provides a pre-crosslinked photovoltaic module and a photovoltaic module encapsulation system. By pre-crosslinking the glass and the adhesive film, and pre-crosslinking the adhesive film and the backplane, the adhesive film laying step in the production process of the photovoltaic module can be reduced, achieving the effect of accelerating the production rhythm and reducing the generation of waste during the production process. The specific technical solutions are as follows:

[0007] A pre-crosslinked photovoltaic module includes solar cells, and a pre-crosslinked layer of glass film is laid on the front side of the solar cells, and a pre-crosslinked layer of backplane film is laid on the back side of the solar cells; through holes are evenly distributed in the pre-crosslinked layer of backplane film.

[0008] In some embodiments of the present disclosure, the pre-crosslinked layer of glass film is a pre-crosslinked layer of POE glass.

[0009] In some embodiments of the present disclosure, the pre-crosslinked layer of backplane film is a pre-crosslinked layer of POE backplane.

[0010] In some embodiments of the present disclosure, the backplane of the pre-crosslinked layer of POE backplane is a polymer film.

[0011] In some embodiments of the present disclosure, the through holes are round holes.

[0012] In some embodiments of the present disclosure, the diameter of the through holes is 8-10 mm.

[0013] A photovoltaic module encapsulation system includes the above-mentioned pre-crosslinked photovoltaic module, a feeding machine for the pre-crosslinked layer is arranged for the pre-crosslinked layer of glass film, a typesetting machine is arranged on one side of the feeding machine for the pre-crosslinked layer, and a string welding machine is arranged on one side of the typesetting machine.

[0014] Compared with the prior art, the above-mentioned pre-crosslinked photovoltaic module and photovoltaic module encapsulation system have the following beneficial effects:

[0015] In this solution, by adopting the pre-crosslinked layer of glass film and the pre-crosslinked layer of backplane film, the step of laying the film in the production process of the photovoltaic module is reduced, so as to speed up the production rhythm and reduce the generation of waste in the production process; after using the backplane with a pre-crosslinked layer, the size of the backplane opening can be reduced, the ability of the module to resist water vapor infiltration can be increased, and at the same time, the perforation rate in the module manufacturing process can be greatly improved. The improved encapsulation system can avoid the defective problems caused by film laying, improve the production efficiency of the module and thus improve the production capacity, and improve the yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an exploded schematic view of the structure of a conventional photovoltaic module;

[0017] Figure 2 It is a schematic diagram of the composition of a conventional photovoltaic module encapsulation system;

[0018] Figure 3 It is an exploded schematic view of the structure of a photovoltaic module in an embodiment of the present invention;

[0019] Figure 4 It is a schematic diagram of the composition of a photovoltaic module encapsulation system in an embodiment of the present invention;

[0020] Description of reference numerals in the figure: 1. Glass layer; 2. Adhesive film layer I; 3. Solar cell; 4. Adhesive film layer II; 5. Backsheet layer; 61. Glass loader; 62. Adhesive film cutter; 63. Adhesive film placer; 64. Typesetter; 65. Stringer welder; 7. Adhesive film - glass pre - crosslinked layer; 8. Adhesive film - backsheet pre - crosslinked layer; 9. Pre - crosslinked layer loader. Detailed implementation mode

[0021] In order to better understand the purpose, structure and function of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below. The serial numbers assigned to the components herein are only used to distinguish the objects described, and do not have any sequential or technical meaning.

[0022] As shown in the attached drawings Figures 3 to 4 As shown, this embodiment designs a pre - crosslinked photovoltaic module, including a solar cell 3. A adhesive film - glass pre - crosslinked layer 7 is laid on the front side of the solar cell 3, and a adhesive film - backsheet pre - crosslinked layer 8 is laid on the back side of the solar cell 3; the adhesive film - backsheet pre - crosslinked layer is evenly distributed with through - holes; the through - holes are round holes, and the diameter of the through - holes can be 8 - 10 mm.

[0023] Among them, the adhesive film - glass pre - crosslinked layer 7 can be a POE - glass pre - crosslinked layer, and the adhesive film - backsheet pre - crosslinked layer 8 can be a POE - backsheet pre - crosslinked layer. Using a POE encapsulant has significant advantages, including excellent volume resistivity and reduced permeability to moisture and sodium ions in the module; the backsheet of the POE - backsheet pre - crosslinked layer is a polymer film, and the polymer film can be a film made of polymers such as polyvinyl fluoride (PVF), polyethylene terephthalate (PET) or polyamide (PA).

[0024] A photovoltaic module encapsulation system is also designed, including the above - mentioned pre - crosslinked photovoltaic module. The adhesive film - glass pre - crosslinked layer 7 is equipped with a pre - crosslinked layer loader 9. A typesetter 64 is arranged on one side of the pre - crosslinked layer loader 9, and a stringer welder 65 is arranged on one side of the typesetter 64.

[0025] This solution adopts the adhesive film - glass pre - crosslinked layer 7 and the adhesive film - backsheet pre - crosslinked layer 8 to eliminate the adhesive film laying step in the production process of the photovoltaic module, achieving the effects of accelerating the production beat and reducing the generation of waste during production; after using a backsheet with a pre - crosslinked layer, the size of the backsheet opening can be reduced, increasing the ability of the module to resist water vapor infiltration, and at the same time greatly improving the perforation rate during the module manufacturing process. The improved encapsulation system can avoid the defective problems caused by adhesive film laying, improve the production efficiency of the module and thus increase the production capacity, and improve the yield.

[0026] It can be understood that the above description is only for explaining the specific implementation manners of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application should be covered within the disclosure scope of the present application.

Claims

1. A pre-crosslinked photovoltaic module, comprising a cell (3), characterized in that: The front side of the cell (3) is paved with a pre-crosslinked adhesive film glass layer (7), and the back side of the cell (3) is paved with a pre-crosslinked adhesive film backplane layer (8); the pre-crosslinked adhesive film backplane layer is evenly distributed with through holes.

2. The pre-crosslinked photovoltaic module according to claim 1, characterized in that: The adhesive film glass pre-crosslinking layer (7) is a POE glass pre-crosslinking layer.

3. The pre-crosslinked photovoltaic module according to claim 1, characterized in that: The adhesive film backplane pre-crosslinked layer (8) is a POE backplane pre-crosslinked layer.

4. The pre-crosslinked photovoltaic module according to claim 3, characterized in that: The back sheet of the POE back sheet pre-crosslinking layer is a polymer film.

5. The pre-crosslinked photovoltaic module according to claim 1, characterized in that: The through hole is a round hole.

6. The pre-crosslinked photovoltaic module according to claim 5, characterized in that: The diameter of the through hole is 8-10 mm.

7. A photovoltaic module packaging system, characterized in that: A pre-cross-linked photovoltaic module comprising the pre-cross-linked layer (7) of the adhesive film glass is provided with a pre-cross-linked layer feeder (9), a typesetting machine (64) is provided on one side of the pre-cross-linked layer feeder (9), and a stringing machine (65) is provided on one side of the typesetting machine (64).

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