Grid solar cell back film

Abstract

The utility model relates to the technical field of solar cell back films, in particular to a grid solar cell back film which comprises a grid back film body and release paper, the release paper is attached to the side, away from grids, of the grid back film body, and a lamination layer is arranged on the side, close to the grid back film body, of the release paper. One side, far away from the lamination layer, of the release paper is connected with the plastic sheet layer through the bonding layer; the grid back film body and the release paper are jointly placed in a groove in the upper end face of the protection box, the inner wall of the bottom end of the groove is fixedly connected with an anti-skid pad, taking grooves for the grid back film body are formed in the two ends of the protection box, and a cover plate is buckled to the upper end face of the protection box. The upper and lower groups of protection boxes are stacked and connected through a positioning rod; and the lower part of the positioning piece penetrates through the cover plate and is positioned in the groove. The plastic sheet layer is a plastic sheet with certain elasticity and strength, and through the design of the plastic sheet layer on one side of the release paper, the hardness and flatness of the grid back film body can be improved, and creases caused by bending of the grid back film body are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of solar cell back films, in particular to a grid solar cell back film. Background Art

[0002] A solar backsheet is a component of a solar panel, located on the back of the solar cells and providing protection and support for the cells. Backsheets are typically composed of one or more layers of thin film materials, such as polymers, metals, or fiberglass. Solar cell backsheets are a key encapsulation material used in solar cell modules, primarily composed of a fluorine-based material with excellent weather resistance and PET, a material with excellent electrical insulation properties.

[0003] The solar cell backsheet is located on the outer layer of the module. After bonding to the EAV, it blocks the atmosphere and creates a vacuum seal around the core cells. The primary function of this seal is to block water. Existing grid-type solar cell backsheets have poor weather resistance and are prone to creases from bending when not in use.

[0004] To this end, we propose a grid solar cell back film. Utility Model Content

[0005] The main purpose of the present utility model is to provide a grid solar cell back film, in which the plastic sheet layer is a plastic sheet with certain elasticity and strength. Through the design of the plastic sheet layer on one side of the release paper, the hardness and flatness of the grid back film body can be improved, and the grid back film body can be prevented from having creases due to bending, which can effectively solve the problems in the background technology.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A grid solar cell back film, comprising a grid back film body and release paper, wherein one side of the grid back film body is provided with a grid, the side of the grid back film body away from the grid is adhered to the release paper, the side of the release paper close to the grid back film body is provided with a coating layer, and the side of the release paper away from the coating layer is connected to a plastic sheet layer via an adhesive layer;

[0008] The mesh backing film body and the release paper are placed together in a groove on the upper end surface of the protection box. The inner wall of the bottom end of the groove is fixedly connected with an anti-slip pad. Both ends of the protection box are provided with a taking groove for the mesh backing film body. The upper end surface of the protection box is buckled with a cover plate.

[0009] The protection box and the cover plate are both horizontally arranged rectangular plate structures, and the upper and lower groups of the protection boxes are stacked and connected by positioning rods.

[0010] By adopting the above technical solution, the grid back film body and the release paper are placed together in the groove on the upper end face of the protection box, and a cover plate is fastened on the upper end face of the protection box. The upper and lower groups of protection boxes are stacked and connected by a positioning rod, which can achieve the purpose of protecting the grid back film body. At the same time, it is also convenient for transporting multiple grid back film bodies. The lower part of the positioning piece on the cover passes through the cover plate and is located in the groove. The rubber strip at the bottom end of the positioning piece contacts the side of the grid back film body away from the release paper, thereby limiting the position of the grid back film body in the protective box and avoiding the movement of the grid back film body.

[0011] Specifically, positioning holes adapted to the positioning rods are provided at the four corners of the upper end surface of the protection box.

[0012] Specifically, a thread groove that matches the thread of the positioning hole is provided on the outer side of the lower part of the positioning rod.

[0013] Specifically, L-shaped positioning pieces are fixedly inserted at the four corners of the upper end surface of the cover plate.

[0014] Specifically, the lower portion of the positioning member passes through the cover plate and is located in the groove.

[0015] Specifically, a rubber strip is fixedly glued to the bottom end of the positioning piece, and the rubber strip at the bottom end of the positioning piece contacts the side of the grid backing film body away from the release paper.

[0016] Beneficial effects of the utility model:

[0017] (1) The utility model discloses a grid solar cell back film, wherein the plastic sheet layer is a plastic sheet having a certain elasticity and strength. The design of the plastic sheet layer on one side of the release paper can improve the hardness and flatness of the grid back film body, thereby preventing the grid back film body from being creased due to bending;

[0018] (2) The utility model describes a grid solar cell back film, wherein the grid back film body and the release paper are placed together in a groove on the upper end face of the protection box, and a cover plate is fastened to the upper end face of the protection box. The upper and lower sets of protection boxes are stacked and connected by a positioning rod, which can achieve the purpose of protecting the grid back film body and also facilitate the transportation of multiple grid back film bodies. The lower part of the positioning member on the cover plate passes through the cover plate and is located in the groove. The rubber strip at the bottom end of the positioning member contacts the side of the grid back film body away from the release paper, thereby limiting the position of the grid back film body in the protection box and preventing the grid back film body from moving. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 This is a three-dimensional diagram of the grid back film body of the present utility model;

[0022] Figure 3 This is a three-dimensional diagram of the positioning rod of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the grid back film body of the utility model;

[0024] In the figure: 1. Grid back film body; 2. Protective box; 3. Groove; 4. Positioning hole; 5. Positioning rod; 6. Anti-slip pad; 7. Pick-up slot; 8. Cover; 9. Positioning piece; 10. Threaded groove; 11. Release paper; 1101. Coating layer; 1102. Adhesive layer; 1103. Plastic sheet layer. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0026] As an embodiment of the present invention, Figures 1-4 As shown, the grid solar cell back film of the present invention includes a grid back film body 1 and a release paper 11. A grid is provided on one side of the grid back film body 1. The release paper 11 is attached to the side of the grid back film body 1 away from the grid. A coating layer 1101 is provided on the side of the release paper 11 close to the grid back film body 1. The side of the release paper 11 away from the coating layer 1101 is connected to a plastic sheet layer 1103 via an adhesive layer 1102.

[0027] The mesh backing film body 1 and the release paper 11 are placed together in the groove 3 on the upper end surface of the protection box 2. The inner wall of the bottom end of the groove 3 is fixedly connected to the anti-slip pad 6. Both ends of the protection box 2 are provided with a taking groove 7 for the mesh backing film body 1. The upper end surface of the protection box 2 is buckled with a cover plate 8;

[0028] The protection box 2 and the cover plate 8 are both horizontally arranged rectangular plate structures. The upper and lower groups of the protection boxes 2 are stacked and connected by a positioning rod 5.

[0029] When in use, the grid back film body 1 and the release paper 11 are placed together in the groove 3 on the upper end face of the protection box 2. The upper end face of the protection box 2 is buckled with a cover plate 8. The upper and lower groups of protection boxes 2 are stacked and connected by a positioning rod 5. The four corners of the upper end face of the cover plate 8 are fixedly plugged with L-shaped positioning parts 9. The lower part of the positioning part 9 passes through the cover plate 8 and is located in the groove 3. The rubber strip at the bottom end of the positioning part 9 contacts the side of the grid back film body 1 away from the release paper 11, thereby limiting the position of the grid back film body 1 in the protection box 2 to prevent the grid back film body 1 from moving.

[0030] The present invention also includes positioning holes 4 adapted to the positioning rods 5 , which are provided at the four corners of the upper end surface of the protection box 2 .

[0031] The utility model further comprises that a thread groove 10 is provided on the outer side of the lower portion of the positioning rod 5 and is threadably matched with the positioning hole 4 .

[0032] The present invention further comprises that L-shaped positioning members 9 are fixedly inserted at the four corners of the upper end surface of the cover plate 8 .

[0033] The present invention further comprises that the lower portion of the positioning member 9 passes through the cover plate 8 and is located in the groove 3 .

[0034] The present invention further comprises that a rubber strip is fixedly glued to the bottom end of the positioning member 9 , and the rubber strip at the bottom end of the positioning member 9 contacts the side of the grid backing film body 1 away from the release paper 11 .

[0035] When the present invention is in use, a grid is provided on one side of the grid back film body 1, and a release paper 11 is attached to the side of the grid back film body 1 away from the grid, and a coating layer 1101 is provided on the side of the release paper 11 close to the grid back film body 1, and the side of the release paper 11 away from the coating layer 1101 is connected to the plastic sheet layer 1103 through an adhesive layer 1102; the grid back film body 1 and the release paper 11 are placed together in the groove 3 on the upper end face of the protection box 2, and a cover plate 8 is buckled on the upper end face of the protection box 2. The upper and lower groups of protection boxes 2 are stacked and connected by a positioning rod 5, and L-shaped positioning parts 9 are fixedly inserted at the four corners of the upper end face of the cover plate 8. The lower part of the positioning part 9 passes through the cover plate 8 and is located in the groove 3. The rubber strip at the bottom end of the positioning part 9 contacts with the side of the grid back film body 1 away from the release paper 11, thereby limiting the position of the grid back film body 1 in the protection box 2 to prevent the grid back film body 1 from moving.

[0036] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A grid solar cell back film, characterized in that: The invention comprises a grid backing film body (1) and a release paper (11), wherein a grid is provided on one side of the grid backing film body (1), the release paper (11) is attached to the side of the grid backing film body (1) away from the grid, the release paper (11) is provided with a coating layer (1101) on the side close to the grid backing film body (1), and the side of the release paper (11) away from the coating layer (1101) is connected to a plastic sheet layer (1103) via an adhesive layer (1102); The grid backing film body (1) and the release paper (11) are placed together in a groove (3) on the upper end surface of the protection box (2); an anti-slip pad (6) is fixedly connected to the inner wall of the bottom end of the groove (3); both ends of the protection box (2) are provided with a taking groove (7) for the grid backing film body (1); and a cover plate (8) is buckled on the upper end surface of the protection box (2); The protection box (2) and the cover plate (8) are both horizontally arranged rectangular plate structures, and the upper and lower groups of the protection boxes (2) are stacked and connected by a positioning rod (5).

2. The grid solar cell back film according to claim 1, characterized in that: Positioning holes (4) adapted to the positioning rods (5) are provided at the four corners of the upper end surface of the protection box (2).

3. The grid solar cell back film according to claim 2, characterized in that: The outer side of the lower portion of the positioning rod (5) is provided with a thread groove (10) that is threadably matched with the positioning hole (4).

4. The grid solar cell back film according to claim 1, characterized in that: L-shaped positioning pieces (9) are fixedly inserted at the four corners of the upper end surface of the cover plate (8).

5. The grid solar cell back film according to claim 4, characterized in that: The lower portion of the positioning member (9) passes through the cover plate (8) and is located in the groove (3).

6. The grid solar cell back film according to claim 5, characterized in that: A rubber strip is fixedly glued to the bottom end of the positioning member (9), and the rubber strip at the bottom end of the positioning member (9) contacts the side of the grid back film body (1) away from the release paper (11).

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