Light photovoltaic single-glass assembly

Abstract

The utility model discloses a light photovoltaic single-glass assembly, which belongs to the technical field of photovoltaic assemblies and comprises a frame and a photovoltaic laminated piece. An annular sinking table is arranged on the inner ring of the outer surface of the frame and matched with the photovoltaic laminated piece, and the outer surface of the photovoltaic laminated piece is flush with the outer surface of the frame. And the photovoltaic laminated piece and the frame are sealed and fixed through double-component silica gel. According to the photovoltaic single-glass assembly, the sinking table is arranged on the outer side of the frame to place the photovoltaic laminated piece, so that the outer surface of the photovoltaic laminated piece is flush with the outer surface of the frame, the outer surface of the photovoltaic single-glass assembly is free of steps on the basis of ensuring the load resistance of the photovoltaic single-glass assembly, and the purpose of preventing the outer surface of the photovoltaic single-glass assembly from being accumulated with dust and water is achieved.

Description

Technical Field

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

[0002] A photovoltaic module, also known as a solar panel or a photovoltaic panel, is the core part of a solar power generation system. A single-glass module mainly includes a frame 1, tempered glass, a glue film, a single-sided cell, a backsheet, and a junction box. The back of the single-glass cell is usually printed with aluminum paste and covered by a full aluminum layer. The cell is encapsulated by relying on the frame and the tempered glass to ensure the load-bearing capacity of the single-glass photovoltaic module. Currently, the commonly used frame 1 structure is as Figure 1 shown. A semi-surrounding card slot 11 is provided on the inner circle of the outer side of the frame 1. During use, after the laminated tempered glass, glue film, and single-sided cell assembly are aligned and fixed, they are installed in this card slot 11, and then sealed and fixed with glue to achieve the encapsulation of the photovoltaic module. The inventor believes that this encapsulation structure forms a stepped surface at the part where the glass surface contacts the outer edge of the card slot 11. It is extremely difficult to thoroughly clean the step, and it is easy to accumulate dust and water. At least, it affects the efficiency of the photovoltaic module in absorbing solar photons, and at worst, it will affect the service life of the photovoltaic module due to the intrusion of water vapor. Therefore, it is necessary to design a single-glass photovoltaic module without steps on the outer surface after encapsulation. Summary of the Utility Model

[0003] In order to overcome the defects in the prior art that there is a stepped surface at the part where the glass surface contacts the outer edge of the card slot in the encapsulation structure, dust and water accumulate at the step, which at least affects the efficiency of the photovoltaic module in absorbing solar photons, and at worst, it will affect the service life of the photovoltaic module due to the intrusion of water vapor.

[0004] In view of at least one of the above technical problems, the utility model provides a lightweight single-glass photovoltaic module. By arranging a sunken step on the outer side of the frame and placing the laminated module into it, while ensuring the load-bearing capacity of the single-glass photovoltaic module, the outer surface of the single-glass photovoltaic module has no steps, achieving the purpose of preventing dust and water from accumulating on the outer surface of the single-glass photovoltaic module. The specific technical solutions are as follows:

[0005] A lightweight single-glass photovoltaic module includes a frame and a photovoltaic laminate; an annular sunken platform is provided on the inner circle of the outer surface of the frame, the sunken platform cooperates with the photovoltaic laminate, and the outer surface of the photovoltaic laminate is flush with the outer surface of the frame; the photovoltaic laminate and the frame are sealed and fixed by two-component silicone.

[0006] In some embodiments of the present disclosure, the frame is made of steel.

[0007] In some embodiments of the present disclosure, the frame is a solid frame.

[0008] In some embodiments of the present disclosure, the thickness of the frame is 17 mm.

[0009] In some embodiments of the present disclosure, the bottom surface of the sunk platform is a plane and is parallel to the bottom surface of the photovoltaic laminate.

[0010] In some embodiments of the present disclosure, a glue groove is provided on the bottom surface of the sunk platform.

[0011] In some embodiments of the present disclosure, a hook member for clamping the back plate is provided on the inner circumference of the inner surface of the frame.

[0012] In some embodiments of the present disclosure, the hook member is a semi-enclosed rectangular groove structure.

[0013] In some embodiments of the present disclosure, the photovoltaic laminate sequentially includes a tempered glass layer, an encapsulant layer, and a cell layer from outside to inside.

[0014] In some embodiments of the present disclosure, the thickness of the tempered glass layer is 1.1 mm.

[0015] Compared with the prior art, the above-mentioned lightweight photovoltaic single-glass module has the following beneficial effects:

[0016] By disposing the sunk platform on the outer side of the frame to place the photovoltaic laminate, the outer surface of the photovoltaic laminate is flush with the outer surface of the frame, so as to ensure the anti-load capacity of the photovoltaic single-glass module and make the outer surface of the photovoltaic single-glass module have no steps, achieving the purpose of preventing dust and water accumulation on the outer surface of the photovoltaic single-glass module;

[0017] By making the outer surface of the photovoltaic single-glass module have no steps, an automatic dust wiping or dust removing device can be configured on the outer surface of the lightweight photovoltaic single-glass module without considering the interference of the protruding frame on the operation of the automatic wiping device, providing a new technical idea for the structural design of the photovoltaic module;

[0018] The designed structure is intuitive, the assembly is convenient, and the use cost and maintenance cost are low. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a semi-sectional schematic view of an existing frame structure;

[0020] Figure 2 It is a semi-sectional schematic view of the frame structure in the structure of the present invention;

[0021] Figure 3 It is the outer surface of the lightweight photovoltaic single-glass module in the structure of the present invention;

[0022] Figure 4 It is the inner surface of the lightweight photovoltaic single-glass module in the structure of the present invention;

[0023] Description of reference numerals in the figure: 1. Frame; 11. Card slot; 2. Frame border; 21. Counterbore; 22. Hook member. Detailed implementation manners

[0024] 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.

[0025] It should be noted that, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used herein in this application are only for the purpose of describing specific embodiments, and are not intended to limit this application. The terms "including" and "provided with" and any variations thereof in this application are open-ended expressions, intended to cover non-exclusive inclusion.

[0026] 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. The "connection" mentioned in this disclosure, unless otherwise specifically described, includes both direct and indirect "connections". In the description of this application, it should be understood that the orientation terms such as "inside" and "outside" indicate the orientation or positional relationship based on the Figure 2 orientation or positional relationship shown in the attached drawings. It is only for the convenience of description, rather than indicating or implying that the device or unit referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to this application.

[0027] As shown in the attached drawing part Figures 2 to 4As shown in the figure, a lightweight photovoltaic single-glass module is designed, which includes a frame 2 and a photovoltaic laminate. The frame 2 is a rectangular structure. The photovoltaic laminate mainly includes a tempered glass layer, an encapsulant layer, and a cell layer from outside to inside in sequence. In this embodiment, the thickness of the tempered glass layer is 1.1 mm. By replacing the 30-mm or 35-mm thick aluminum profile frame of the existing structure with a 17-mm steel frame, during use, the frame 2 is preferably a solid frame, which can achieve the purpose of reducing the weight of the module. An annular counterbore 21 is provided on the inner circle of the outer surface of the frame 2. The depth of the counterbore 21 is not greater than 1.5 mm. The counterbore 21 cooperates with the photovoltaic laminate. The bottom surface of the counterbore 2 is a plane and is parallel to the bottom surface of the photovoltaic laminate, so that the photovoltaic laminate can be smoothly attached to the counterbore 21, increasing the stability. The outer surface of the photovoltaic laminate is flush with the outer surface of the frame 2. The photovoltaic laminate and the frame 2 are sealed and fixed by two-component silicone. The two-component liquid silicone is an existing type of adhesive, mostly a colorless and transparent liquid, divided into two components, A and B. As a type of room temperature vulcanizing silicone rubber, each component of the two-component liquid silicone ab is fully dried, a crosslinking agent and a catalyst are added, and after mixing, it is immediately filled into the encapsulation part, and chain extension and crosslinking reaction occur immediately when contacting with moisture. Two liquid-type crosslinking agents such as tetraethyl orthosilicate and polysilicic acid ethyl ester can be used, and tin compounds such as dibutyltin dilaurate and stannous octoate can be used as the catalyst, and there are also fillers such as silica white treated with silazane, diatomite, precipitated calcium silicate, etc. Preferably, a glue groove is provided on the bottom surface of the counterbore 2 to increase the contact area of the glue surface and make the bonding more stable. By arranging the counterbore 21 on the outer side of the frame 2 to place the photovoltaic laminate, the outer surface of the photovoltaic laminate is flush with the outer surface of the frame 2, so as to ensure the anti-load capacity of the photovoltaic single-glass module and make the outer surface of the photovoltaic single-glass module have no steps, achieving the purpose of preventing dust and water accumulation on the outer surface of the photovoltaic single-glass module. By making the outer surface of the photovoltaic single-glass module have no steps, an automatic dust wiping or dust removing device can be configured on the outer surface of the lightweight photovoltaic single-glass module, without considering the interference of the protruding frame 2 on the operation of the automatic wiping device, providing a new technical idea for the structural design of the photovoltaic module. The designed structure is intuitive, the assembly is convenient, and the use cost and maintenance cost are low.

[0028] Among them, a hook member 22 for clamping a backsheet is provided on the inner circle of the inner surface of the frame 2. The hook member 22 can be several hook plates evenly distributed. The hook plates can be right-angled L plates. The backsheet is fixed by the hook plates. Or as shown in this embodiment, it is a semi-enclosed rectangular groove structure, and the backsheet is assembled in this rectangular groove structure.

[0029] 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 lightweight photovoltaic single-glass module, characterized in that: It comprises a frame (2) and a photovoltaic laminate; the inner circle of the outer surface of the frame (2) is provided with an annular sink (21), the sink (21) cooperates with the photovoltaic laminate, and the outer surface of the photovoltaic laminate is flush with the outer surface of the frame (2); the photovoltaic laminate and the frame (2) are sealed and fixed by a two-component silicone rubber.

2. The lightweight photovoltaic single-glass component according to claim 1, characterized in that: The frame (2) is made of steel.

3. The lightweight photovoltaic single-glass component according to claim 2, characterized in that: The frame (2) is a solid frame.

4. The lightweight photovoltaic single-glass component according to claim 2, characterized in that: The thickness of the frame (2) is 17 mm.

5. The lightweight photovoltaic single-glass component according to claim 1, characterized in that: The bottom surface of the sink (21) is a plane and is parallel to the bottom surface of the photovoltaic laminate.

6. The lightweight photovoltaic single-glass component according to claim 1, characterized in that: The bottom surface of the sink (21) is provided with a glue groove.

7. The lightweight photovoltaic single-glass component according to claim 1, characterized in that: The inner circle of the inner surface of the frame (2) is provided with a hook piece (22) for the card back plate.

8. The lightweight photovoltaic single-glass component according to claim 7, characterized in that: The hook member (22) is a semi-enclosed rectangular groove structure.

9. The lightweight photovoltaic single-glass component according to claim 1, characterized in that: The photovoltaic laminate comprises a tempered glass layer, an adhesive film layer and a battery sheet layer in sequence from the outside to the inside.

10. The lightweight photovoltaic single-glass component according to claim 9, characterized in that: The thickness of the tempered glass layer is 1.1 mm.

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