High-reflectivity solar cell back film

Abstract

The utility model discloses a high-reflectivity solar cell back film, which comprises a high-reflectivity back film body, a polyester plate A, a rib frame mechanism, a polyvinyl chloride substrate A, a polyester plate B and a polyvinyl chloride substrate B, a polyester plate A, a rib frame mechanism, a polyvinyl chloride substrate A, a polyester plate B and a polyvinyl chloride substrate B are outwards adhered to a high-reflectivity back film body for an existing solar cell layer by layer. A polyester plate A, a rib frame mechanism, a polyvinyl chloride substrate A, a polyester plate B and a polyvinyl chloride substrate B on the back surface of the high-reflectivity back film body can provide a high-strength composite sheet plate layer structure to resist force, so that the high-reflectivity back film body is not easily damaged by collision when encountering external collision force; and the problem that the solar cell is influenced by the external environment due to the damage of the sheet plate of the high-reflectivity back film body is solved.

Description

Technical Field

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

[0002] Highly reflective solar cell back films are specially designed films designed to increase the light reflectivity of solar cells, thereby improving their efficiency and performance. These films are typically made from highly reflective materials, such as polyethylene terephthalate (PET) film, using specific techniques to enhance their ability to reflect sunlight. The design and application of highly reflective solar cell back films aim to address the efficiency issues faced by solar cells when receiving sunlight. By reflecting more light back to the solar cell surface, the utilization of light energy is increased, thereby improving photoelectric conversion efficiency.

[0003] The main function of the solar cell back film is to protect the solar cell and prevent it from being affected by the external environment, while providing the necessary mechanical strength to resist external pressure and impact. However, the existing high-reflective solar cell back film lacks good strength in practical application, which makes the high-reflective solar cell back film easily damaged by external force, thereby affecting its high reflectivity. It is also easy for the solar cell back film to be affected by the external environment after being damaged. For this reason, we propose a high-reflective solar cell back film. Utility Model Content

[0004] The main purpose of the utility model is to provide a high-reflectivity solar cell back film, in which a polyester board A, a rib frame mechanism, a polyvinyl chloride based sheet A, a polyester board B and a polyvinyl chloride based sheet B are bonded outwardly layer by layer on a high-reflectivity back film body used for an existing solar cell. When the high-reflectivity back film body encounters an external collision force, the polyester board A, the rib frame mechanism, the polyvinyl chloride based sheet A, the polyester board B and the polyvinyl chloride based sheet B on the back of the high-reflectivity back film body can provide a high-strength composite sheet layer structure to resist the force, so that the high-reflectivity back film body is not easily damaged by the impact when encountering an external collision force; and the composite sheet layer composed of the polyester board A, the rib frame mechanism, the polyvinyl chloride based sheet A, the polyester board B and the polyvinyl chloride based sheet B has high strength and is not easily damaged, so that the high-reflectivity back film body is not easily affected by the problem of the external environment affecting the solar cell due to the damage of the sheet, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A highly reflective solar cell back film comprises a highly reflective back film body, and further comprises a polyester board A, a rib structure, a polyvinyl chloride based sheet A, a polyester board B and a polyvinyl chloride based sheet B. The back of the highly reflective back film body is bonded with the polyester board A, the polyvinyl chloride based sheet A, the polyester board B and the polyvinyl chloride based sheet B in layers, and the polyester board A and the polyvinyl chloride based sheet A are bonded with the rib structure. The rib structure comprises a core board, a circular frame and an insulating rubber pad. The core board is provided with a circular frame in layers, and the insulating rubber pads are bonded between the frame bodies of the circular frames. The insulating rubber pads are bonded between the core board and the core frame body of the circular frame. Concave rib block grooves are provided on the frame board surface of the circular frame and the board body surface of the core board.

[0007] Furthermore, the surfaces of the polyester board A and the polyester board B are concavely provided with concave rib grooves, and the concave rib grooves of the polyester board A are arranged along the length direction of the board, and the concave rib grooves of the polyester board B are arranged along the width direction of the board;

[0008] By adopting the above technical solution, the surface of polyester board A and polyester board B is provided with concave rib grooves to improve the strength of the board itself, and the concave rib grooves of polyester board A and polyester board B are in different directions, so that polyester board A and polyester board B can maintain a good strength resistance position when subjected to force.

[0009] Furthermore, the thickness of the multi-layer frame board of the circular frame is the same as the thickness of the core board and the pad body of the insulating rubber pad;

[0010] By adopting the above technical solution, the multi-layer frame plates of the circular frame can be well connected by bonding the insulating rubber pads, and the core frame of the circular frame is adaptively bonded to the core plates by bonding the insulating rubber pads.

[0011] Furthermore, the outermost frame edge of the circular frame is bonded to the edge of the polyester board A and the polyvinyl chloride sheet A, and the multi-layer frame surface of the circular frame is bonded to the surface of the polyester board A and the polyvinyl chloride sheet A;

[0012] By adopting the above technical solution, the multi-layer frame of the circular frame can be well bonded between the ester board A and the polyvinyl chloride sheet A to provide support.

[0013] Furthermore, the concave rib block grooves are dispersedly opened on the four side wall surfaces of the circular frame;

[0014] By adopting the above technical solution, the frame strength is improved by arranging concave rib block grooves on the four-sided frame walls of the circular frame.

[0015] Furthermore, the concave rib block grooves are arranged on the surface of the core plate along the length direction of the plate body;

[0016] By adopting the above technical solution, multiple groups of concave rib blocks and grooves are provided on the surface of the core plate to enhance the strength of the plate itself.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The utility model adheres a polyester plate A, a rib structure, a polyvinyl chloride based sheet A, a polyester plate B and a polyvinyl chloride based sheet B to the high-reflectivity back film body used in existing solar cells. When the high-reflectivity back film body encounters an external impact force, the polyester plate A, the rib structure, the polyvinyl chloride based sheet A, the polyester plate B and the polyvinyl chloride based sheet B on the back of the high-reflectivity back film body can provide a high-strength composite sheet layer structure to resist the force, so that the high-reflectivity back film body is not easily damaged by the impact when encountering an external impact force.

[0019] In addition, the composite sheet layer composed of polyester board A, rib structure, PVC based sheet A, polyester board B and PVC based sheet B has high strength and is not easy to be damaged, so that the high reflective back film body is not prone to the problem of external environment affecting solar cells due to sheet damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a highly reflective solar cell back film of the present utility model.

[0021] Figure 2 This is an exploded view of a highly reflective solar cell back film of the present utility model.

[0022] In the figure: 1. Highly reflective back film body; 2. Polyester board A; 3. Rib frame mechanism; 4. PVC backing sheet A; 5. Polyester board B; 6. PVC backing sheet B; 7. Concave rib groove; 8. Core board; 9. Reciprocating frame; 10. Insulating rubber pad; 11. Concave rib block groove. DETAILED DESCRIPTION

[0023] 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.

[0024] like Figure 1-2As shown, a high-reflectivity solar cell back film includes a high-reflectivity back film body 1, and also includes a polyester board A2, a rib structure 3, a polyvinyl chloride based sheet A4, a polyester board B5 and a polyvinyl chloride based sheet B6. The back of the high-reflectivity back film body 1 is bonded with polyester board A2, polyvinyl chloride based sheet A4, polyester board B5 and polyvinyl chloride based sheet B6 layer by layer, and the polyester board A2 and the polyvinyl chloride based sheet A4 are bonded with a rib structure 3. The rib structure 3 includes a core board 8, a circular frame 9 and an insulating rubber pad 10. The outer plate body of the core board 8 is provided with a circular frame 9 layer by layer, and the insulating rubber pads 10 are bonded between the frame bodies of the circular frame 9. The insulating rubber pads 10 are bonded between the core board 8 and the core frame body of the circular frame 9. The frame plate surface of the circular frame 9 and the plate body surface of the core board 8 are provided with concave rib block grooves 11.

[0025] The surfaces of the polyester boards A2 and B5 are concavely provided with concave rib grooves 7, and the concave rib grooves 7 of the polyester board A2 are arranged along the length direction of the board, while the concave rib grooves 7 of the polyester board B5 are arranged along the width direction of the board;

[0026] By adopting the above technical solution, the surface of polyester board A2 and polyester board B5 is provided with concave rib grooves 7 to improve the strength of the board itself, and the concave rib grooves 7 of polyester board A2 and polyester board B5 are in different directions, so that polyester board A2 and polyester board B5 can maintain a good strength resistance position when subjected to force.

[0027] The thickness of the multi-layer frame board of the circular frame 9 is the same as the thickness of the core board 8 and the pad body of the insulating rubber pad 10;

[0028] By adopting the above technical solution, the multi-layer frame plates of the circular frame 9 can be well bonded with the insulating rubber pads 10 for connection, and the core frame of the circular frame 9 is adaptively bonded with the core plate 8 by bonding the insulating rubber pads 10 .

[0029] The outermost frame edge of the circular frame 9 is bonded to the edge of the polyester board A2 and the polyvinyl chloride sheet A4, and the multi-layer frame surface of the circular frame 9 is bonded to the surface of the polyester board A2 and the polyvinyl chloride sheet A4;

[0030] By adopting the above technical solution, the multi-layer frame of the circular frame 9 can be well bonded between the ester board A2 and the polyvinyl chloride sheet A4 to provide support.

[0031] The concave rib block grooves 11 are dispersedly opened on the four side wall surfaces of the circular frame 9;

[0032] By adopting the above technical solution, the frame strength is improved by providing the concave rib block grooves 11 on the four-sided frame wall of the circular frame 9 .

[0033] The concave rib block grooves 11 are arranged on the surface of the core plate 8 along the length direction of the plate body;

[0034] By adopting the above technical solution, multiple groups of concave rib block grooves 11 are provided on the surface of the core plate 8 to enhance the strength of the plate itself.

[0035] It should be noted that the present invention is a highly reflective solar cell back film. After the polyester board A2, the polyvinyl chloride sheet A4, the polyester board B5 and the polyvinyl chloride sheet B6 are bonded outward layer by layer on the high reflective back film body 1 used for existing solar cells, the circular frame 9, the core plate 8 and the insulating rubber pad 10 of the rib frame mechanism 3 can be bonded and fixed between the polyester board A2 and the polyvinyl chloride sheet A4, and the multiple groups of frame plates of the circular frame 9 are bonded with the insulating rubber pad 10. At the same time, the core plate 8 and the circular frame 9 are also bonded with the insulating rubber pad 10 for connection. When the highly reflective back film body 1 encounters an external collision force, the polyester board A2, the rib frame mechanism 3, the polyvinyl chloride sheet A4 and the polyester board B5 on the back of the highly reflective back film body 1 are bonded and fixed. Vinyl chloride sheet A4, polyester board B5 and polyvinyl chloride sheet B6 can provide high-strength composite sheet layers to resist force. The structural strength of polyester board A2 and polyester board B5 with concave rib grooves 7 is improved, and the circular frame 9 and core board 8 of the rib frame mechanism 3 are also provided with concave rib block grooves 11 to improve the strength of the board body, so that the high-reflective back film body 1 is not easily damaged by impact when encountering external collision force. At the same time, the composite sheet layer composed of polyester board A2, rib frame mechanism 3, polyvinyl chloride sheet A4, polyester board B5 and polyvinyl chloride sheet B6 has high strength and is not easy to be damaged, so that the high-reflective back film body 1 is not easily encountered. The problem of external environment affecting solar cells due to sheet damage.

[0036] It should be noted that the present invention is a highly reflective solar cell back film. The components in the present invention are all components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0037] 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 this invention is defined by the appended claims and their equivalents.

Claims

1. A highly reflective solar cell back film, comprising a highly reflective back film body (1), characterized in that: It also includes a polyester board A (2), a rib structure (3), a polyvinyl chloride based sheet A (4), a polyester board B (5) and a polyvinyl chloride based sheet B (6); the back of the high-reflective back film body (1) is bonded with the polyester board A (2), the polyvinyl chloride based sheet A (4), the polyester board B (5) and the polyvinyl chloride based sheet B (6) in layers, and the polyester board A (2) and the polyvinyl chloride based sheet A (4) are bonded with the rib structure (3); the rib structure (3) includes a core board (8), a circular frame (9) and an insulating rubber pad (10); the plate body of the core board (8) is covered with the circular frame (9) in layers, and the insulating rubber pad (10) is bonded between the frame bodies of the circular frame (9); the insulating rubber pad (10) is bonded between the core board (8) and the core frame body of the circular frame (9); the frame plate surface of the circular frame (9) and the plate body surface of the core board (8) are provided with concave rib block grooves (11).

2. The highly reflective solar cell back film according to claim 1, characterized in that: The surfaces of the polyester board A (2) and the polyester board B (5) are concavely provided with concave rib grooves (7), and the concave rib grooves (7) of the polyester board A (2) are arranged along the length direction of the board, while the concave rib grooves (7) of the polyester board B (5) are arranged along the width direction of the board.

3. The highly reflective solar cell back film according to claim 1, characterized in that: The thickness of the multi-layer frame board of the circular frame (9) is the same as the thickness of the core board (8) and the pad body of the insulating rubber pad (10).

4. The highly reflective solar cell back film according to claim 1, wherein: The outermost frame edge of the circular frame (9) is bonded to the edge of the polyester board A (2) and the polyvinyl chloride based sheet A (4), and the multi-layer frame surface of the circular frame (9) is bonded to the surface of the polyester board A (2) and the polyvinyl chloride based sheet A (4).

5. The highly reflective solar cell back film according to claim 1, characterized in that: The concave rib block grooves (11) are dispersedly opened on the four side wall surfaces of the circular frame (9).

6. The highly reflective solar cell back film according to claim 1, characterized in that: The concave rib block grooves (11) are arranged on the surface of the core plate (8) along the length direction of the plate body.

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