Laminated board suitable for double-glass photovoltaic module

Abstract

The utility model discloses a laminated board suitable for a double-glass photovoltaic assembly, which comprises a laminated board body, and a plurality of groups of laminated assemblies used for preventing the double-glass photovoltaic assembly from deviating or fracturing are arranged in the middle of the laminated board at intervals. And the laminating assembly comprises a plurality of groups of rectangular-ambulatory-plane adhesive tapes which are arranged at intervals. According to the device, the double-glass photovoltaic module is stressed step by step in the laminating process due to the design of the rectangular-ambulatory-plane adhesive tape, and EVA (Ethylene Vinyl Acetate) adhesive fully circulates in the module, so that the sealing uniformity is improved, and the problem of adhesive overflow is reduced or avoided; the rectangular-ambulatory-plane rubber strip corner opening design prevents the four corners of the glass from being stressed, and the fracturing risk is reduced; a plurality of groups of rectangular-ambulatory-plane adhesive tapes are arranged, so that the double-glass photovoltaic modules with various sizes can be met, and the applicability is high; the device is simple in structure, the arrangement of a laminated frame is omitted, the production cost is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to an assembly tool for a solar photovoltaic module, in particular to a laminate suitable for a double-glass photovoltaic module. Background Art

[0002] The double-glass photovoltaic module is composed of two layers of glass, with a heat-conducting gas sandwiched in the middle as a heat-insulating layer, forming a channel for air isolation, sound insulation and heat insulation. Therefore, it has excellent functions such as heat insulation, sound insulation, heat preservation, anti-fogging, anti-freezing and safety protection, which can better solve the interference of the atmospheric temperature on the room temperature, and at the same time can achieve the purpose of energy conservation and emission reduction, and is widely used in modern buildings. In the production process of photovoltaic modules, the lamination process is an important process, and the lamination effect affects the appearance and encapsulation effect of the product. Before entering the lamination process, the front glass, EVA front film, battery pack, EVA back film and back glass will be stacked neatly in sequence and enter the lamination equipment through the conveyor belt. The high temperature in the lamination equipment will melt the EVA film into a liquid state. At the same time, the laminate presses the upper and lower glasses downward so that the two glasses are closely attached, and the liquid EVA will fill the gap between the two glasses, and the excess EVA glue will overflow from the edge of the glass. In traditional lamination equipment, a laminate about 9m long and 3m wide is arranged at the top and bottom of the equipment respectively, and then the two laminates simultaneously press the glass inward to complete the lamination process. Since both the upper and lower sides of the double-glass photovoltaic module are glass, displacement, uneven glue pressing and corner cracking often occur during the lamination process. To solve the above problems, the traditional method is to lay a lamination frame with a height slightly higher than the module around the module. The lamination frame can share part of the pressure and reduce the risk of glass cracking. This method reduces the risk of glass hidden cracks to a certain extent, but at the same time increases labor and material consumption and reduces production efficiency. In addition, the lamination frame needs to be adapted to the size of the double-glass photovoltaic module, and different sizes of products require multiple sizes of equipment, increasing the production cost. Summary of the Utility Model

[0003] Purpose of the Utility Model: The purpose of the utility model is to improve the lamination effect of double-glass photovoltaic modules and provide a laminate suitable for double-glass photovoltaic modules.

[0004] Technical Solution: The laminate suitable for double-glass photovoltaic modules described in the utility model includes a laminate body, and multiple groups of lamination components for preventing the double-glass photovoltaic module from shifting or cracking are arranged at intervals in the laminate; the lamination components include multiple groups of spaced-out square-ring-shaped rubber strips.

[0005] Further, at least three groups of the square-loop-shaped rubber strips are arranged at intervals from the inside to the outside. The number of groups of the square-loop-shaped rubber strips can be set according to the size of the double-glass photovoltaic. The horizontal length of the square-loop-shaped rubber strip is 500 - 1300 mm, and the vertical length is 800 - 2500 mm. The distance between adjacent square-loop-shaped rubber strips is 40 - 100 mm, and the width of the square-loop-shaped rubber strip is 5 - 10 mm. Multiple groups of square-loop-shaped rubber strips apply pressure step by step, enabling the EVA glue for sealing to be evenly and slowly filled between the two pieces of glass from the inside to the outside, avoiding the pollution and waste of materials caused by uneven glue pressing and excessive local glue, and at the same time enabling more EVA glue to be filled between the two pieces of glass to increase the sealing performance of the double-glass photovoltaic module.

[0006] Further, the corners of the square-loop-shaped rubber strip are open, reducing the force on the four corners of the double-glass photovoltaic module and preventing the reduction or scrapping of the performance of the double-glass photovoltaic module caused by the cracking of the four corners.

[0007] Further, the height of the square-loop-shaped rubber strip is 2 - 6 mm, and the height decreases gradually from the inside to the outside, with a decreasing gradient of 0.2 - 0.4 mm. The liquid EVA glue starts to slowly spread and fill the gap between the two pieces of glass from the place where the inner-layer rubber strip of the lamination component is compacted, avoiding uneven glue pressing, and then enabling the two pieces of glass of the double-glass photovoltaic module to be closely attached and sealed, enabling more EVA glue to be filled between the two pieces of glass to increase the sealing performance of the double-glass photovoltaic module, and further avoiding the problem of uneven EVA glue pressing and excessive local glue overflowing from the edge and being unable to effectively seal the double-glass photovoltaic module.

[0008] Further, the square-loop-shaped rubber strip has elasticity, is resistant to high temperatures of 200 - 300 °C, and has chemical stability. Fluorine-containing rubber is preferably used to ensure that it does not change during the lamination process and avoid polluting the photovoltaic module. At the same time, the elastic material can make the laminating plate contact the double-glass photovoltaic module flexibly, further avoiding damage to the double-glass photovoltaic module caused by hard contact.

[0009] Beneficial effects: Compared with the prior art, the present utility model has the following advantages: 1. The design of the square-loop-shaped rubber strip enables the double-glass photovoltaic module to be stressed step by step during lamination, allowing the EVA glue to fully circulate within the module, improving the encapsulation uniformity and reducing or avoiding the problem of glue overflow; 2. The open design of the corners of the square-loop-shaped rubber strip avoids the stress on the four corners of the glass and reduces the risk of cracking; 3. The multiple groups of square-loop-shaped rubber strips can meet double-glass photovoltaic modules of various sizes, with high applicability; 4. The device has a simple structure, eliminates the setting of the lamination frame, reduces the production cost, and improves the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic structural diagram of the present utility model;

[0011] Figure 2 This is a three-dimensional schematic diagram of the figure-eight-shaped rubber strip of the present utility model. Specific embodiments

[0012] The technical solution of the present utility model will be further described below with reference to the accompanying drawings.

[0013] As Figure 1 shown, a laminate suitable for a double-glass photovoltaic module includes a laminate 1, and multiple groups of laminating components 2 for preventing the double-glass photovoltaic module from shifting or being fractured are arranged at intervals in the middle of the laminate 1. As Figure 2 shown, the laminating component 2 includes 3 groups of figure-eight-shaped rubber strips arranged at intervals (more than 3 groups of figure-eight-shaped rubber strips can also be set according to the size of the double-glass photovoltaic module), and the corners of the figure-eight-shaped rubber strips are provided with openings. The spacing between the 3 groups of figure-eight-shaped rubber strips is 50 mm (it can also be set to 40 - 100 mm according to the size of the double-glass photovoltaic module), the width of the rubber strip is 8 mm (it can also be set to 5 - 10 mm according to the width of the EVA glue of the double-glass photovoltaic module), the length and width of the 3 groups of figure-eight-shaped rubber strips increase in sequence from the inside to the outside, and their height decreases in sequence from the inside to the outside, with a decreasing gradient of 0.2 - 0.4 mm. The transverse dimension of the innermost rubber strip 2-3 of the 3 groups of figure-eight-shaped rubber strips is 500 mm, the vertical dimension is 800 mm, and the height is 6 mm. The transverse dimension of the middle-layer rubber strip 2-2 is 100 mm, the vertical dimension is 1500 mm, and the height is 5.6 mm. The transverse dimension of the outermost rubber strip 2-1 is 1300 mm, the vertical dimension is 2500 mm, and the height is 5.2 mm (the height of the rubber strip can also be set to 2 - 6 mm according to the width of the EVA glue of the double-glass photovoltaic module, and the decreasing gradient from the inside to the outside is set to 0.2 - 0.4 mm). The 3 groups of figure-eight-shaped rubber strips are made of fluorine-containing rubber with stable chemical properties, resistant to high temperatures of 200 - 300 °C and having a certain elasticity.

[0014] During use, the upper and lower two laminates 1 are fixed to the top and bottom of the laminating equipment. A layer of laminating cloth is arranged on the laminate 1. The front glass, EVA front film, battery pack, EVA back film, and back glass are stacked neatly in sequence and enter the laminating equipment through the conveyor belt. The high temperature inside the laminating equipment will melt the EVA film into a liquid state. Each laminating component 2 corresponds to a double-glass photovoltaic module. The upper and lower two laminates 1 press down on the glass, and the two glasses of the double-glass photovoltaic module are stressed step by step from the contact point of the inner rubber strip 2-3 of the laminating component 2. The opening design at the corner of the loop-shaped rubber strip reduces the stress on the four corners of the double-glass photovoltaic module while ensuring the gradual application of pressure, avoiding cracking at the four corners; the liquid EVA glue slowly diffuses outward from the place where the inner rubber strip 2-3 of the laminating component 2 is compacted to fill the gap between the two glasses, avoiding uneven glue pressing, and then making the two glasses of the double-glass photovoltaic module fit tightly and seal. More EVA glue is filled between the two glasses to increase the sealing performance of the double-glass photovoltaic module, avoiding uneven EVA glue pressing, excessive local overflow from the edge, which cannot effectively seal the double-glass photovoltaic module, while causing waste of EVA glue and pollution to the photovoltaic module.

Claims

1. A laminate applicable to double-glass photovoltaic modules, comprising a laminate (1) body, characterized in that, In the laminate (1) described above, multiple groups of laminating components (2) for preventing the offset or fracturing of the double-glass photovoltaic module are arranged at intervals in the middle; the laminating components (2) include multiple groups of U-shaped rubber strips arranged at intervals.

2. The laminate applicable to a double-glass photovoltaic module according to claim 1, characterized in that, At least 3 groups of the U-shaped rubber strips are arranged at intervals from the inside to the outside.

3. The laminate for a double-glass photovoltaic module according to claim 1, characterized in that, The corners of the U-shaped rubber strips are provided with openings.

4. The laminate applicable to a double-glass photovoltaic module according to claim 1 or 3, characterized in that, The horizontal length of the U-shaped rubber strip is 500 - 1300 mm, the vertical length is 800 - 2500 mm, and the distance between adjacent U-shaped rubber strips is 40 - 100 mm.

5. The laminate for a double-glass photovoltaic module according to claim 1 or 3, characterized in that The width of the U-shaped rubber strip is 5 - 10 mm.

6. The laminate applicable to a double-glass photovoltaic module according to claim 1 or 3, characterized in that, The height of the U-shaped rubber strip is 2 - 6 mm.

7. The laminate for a double-glass photovoltaic module according to claim 6, characterized in that, The height of the U-shaped rubber strip decreases successively from the inside to the outside, and the decreasing gradient is 0.2 - 0.4 mm.

8. The laminate for a double-glass photovoltaic module according to claim 1, characterized in that, The U-shaped rubber strip has elasticity and can withstand high temperatures of 200 - 300 °C.

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