A laminated structure of a photovoltaic module

Abstract

The present invention discloses a laminated structure for photovoltaic modules, comprising a frame, a horizontally arranged working hole formed through the side wall of the frame, a workbench formed on the lower wall of the working hole, a support platform formed on the upper wall of the working hole, a plurality of guide posts fixed between the workbench and the support platform, a pressing plate disposed between the workbench and the support platform capable of rising and falling along all of the guide posts, a support plate for carrying photovoltaic panels disposed on the workbench, a telescopic sleeve disposed on the lower wall of the pressing plate, a negative pressure chamber disposed within the telescopic sleeve capable of covering the photovoltaic panels and the support plate, the negative pressure chamber being connected to a negative pressure device. The present invention employs an integrally covered lamination process to prevent glass deformation, ensure product quality, and significantly improve production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field, in particular to a laminated structure of a photovoltaic module. Background Art

[0002] Photovoltaic modules are made of crystalline silicon cells, tempered glass, and encapsulation materials (such as EVA backsheets) stacked in a specific order. The process of laminating and achieving the desired results through specific methods and parameters is called photovoltaic module lamination technology. The lamination process of photovoltaic modules is a key step in module production. The traditional lamination process is divided into three parts: vacuuming, heating the components, and curing. The production process begins by transporting the stacked components to the laminator for vacuuming. The components are then heated on the laminator's lower heating plate, melting the solid EVA inside the components into a liquid state. The liquid then flows into the gaps between the cells, backsheet, and glass inside the module, bonding the three together before solidifying and cross-linking.

[0003] In the above-mentioned traditional lamination process, high temperature can improve the cross-linking effect and avoid delamination and breakage, but it will cause deformation of the glass. Low temperature will cause insufficient cross-linking, which will easily cause EVA delamination and breakage, affecting the quality of the product. Therefore, in practical applications, lowering the temperature is often used to avoid glass warping. However, there are also some shortcomings, which cause EVA empty glue and wrinkles in the middle position of the laminated component, resulting in a large number of unqualified products and affecting the production efficiency of the lamination process.

[0004] Therefore, there is an urgent need for a photovoltaic module laminate structure that can prevent glass deformation and ensure product quality. Summary of the Invention

[0005] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide a laminated structure of a photovoltaic module with an overall covering lamination process to prevent glass deformation, ensure product quality, and greatly improve production efficiency.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions.

[0007] The present invention provides a laminated structure of a photovoltaic module, comprising a frame, a horizontally arranged working hole is opened through the side wall of the frame, the lower wall of the working hole is a working table, the upper wall of the working hole is a supporting table, a plurality of guide columns are fixed between the working table and the supporting table, a pressing plate that can be raised and lowered along all the guide columns is provided between the working table and the supporting table, a supporting plate for carrying a photovoltaic panel is provided on the working table, a telescopic sleeve is provided on the lower wall of the pressing plate, a negative pressure cavity that can cover the photovoltaic panel and the supporting plate is provided in the telescopic sleeve, The negative pressure chamber is connected to the negative pressure device; the caliber of the telescopic sleeve is not larger than the size of the pressing plate, and the pressing plate can completely cover the support plate; a hydraulic rod is provided between the upper wall of the pressing plate and the lower wall of the support platform, and the hydraulic rod is vertically and centrally provided on the upper wall of the pressing plate; the negative pressure device is installed in the frame, and an air hole is provided on the workbench on one side of the support plate, and the air hole is connected to the negative pressure chamber through an air duct; when the telescopic sleeve is in contact with the workbench, the air hole is located in the negative pressure chamber; an electric heating wire is provided on the lower wall of the support plate.

[0008] Preferably, the negative pressure device is an air pump.

[0009] Preferably, the lower port of the telescopic sleeve is made of rubber.

[0010] The beneficial effects of the laminated structure of a photovoltaic module of the present invention are specifically as follows:

[0011] 1. The present invention completely covers the photovoltaic modules through the pressing plate, so that the photovoltaic modules on the support plate are evenly stressed, thus preventing the glass from being deformed.

[0012] 2. Under the action of the negative pressure device and the heated support plate, the present invention generates negative pressure through the negative pressure chamber, and the support plate melts the EVA at high temperature, quickly achieving vacuuming, heating and curing. The stamping process is completed in one go, greatly improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 The main view of the embodiment of the present invention Figure 1 ;

[0015] Figure 2 The main view of the embodiment of the present invention Figure 2 ;

[0016] Figure 3is a cross-sectional view of an embodiment of the present invention;

[0017] Figure 4 for Figure 3 Enlarged view of part A in the middle.

[0018] Description of reference numerals:

[0019] 1. Base, 2. Frame, 3. Working hole, 4. Workbench, 5. Support table, 6. Guide column, 7. Press plate, 8. Support plate, 9. Hydraulic rod, 10. Telescopic sleeve, 11. Negative pressure chamber, 12. Air hole, 13. Air guide tube, 14. Air pump, 15. Heating wire, 16. Touch screen, 17. Slider, 18. Photovoltaic panel. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Example:

[0022] like Figures 1 to 4 As shown, the present invention provides a laminated structure of a photovoltaic module, including a base 1, a frame 2 is fixed on the base 1, and a rectangular working hole 3 is horizontally opened on the frame 2, that is, the cross-section of the frame 2 is a hole-shaped arrangement; the lower wall of the working hole 3 is a working table 4, and the upper wall of the working hole 3 is a support table 5, and a number of vertically arranged guide columns 6 are fixed between the work table 4 and the support table 5, and a pressing plate 7 is arranged between the work table 4 and the support table 5, and the pressing plate 7 is slidably arranged on the guide column 6 through a slider 17. The function of the guide column 6 is to limit the pressing plate 7 to always rise and fall along the vertical direction of the guide column 6, and during the lifting process, the pressing plate 7 always remains horizontal; a horizontally arranged support plate 8 for carrying the photovoltaic panel 18 is provided on the work table to ensure that the pressing plate 7 applies uniform force to the support plate 8.

[0023] Specifically, a hydraulic rod 9 is provided between the upper wall of the pressing plate 7 and the lower wall of the support platform 5 , and the hydraulic rod 9 is vertically and centrally provided on the upper wall of the pressing plate 7 .

[0024] Among them, the diameter of the telescopic sleeve 10 is not larger than the size of the pressing plate 7, and the pressing plate 7 can completely cover the support plate 8, further ensuring that the pressing plate 7 applies uniform force to the edge of the support plate 8, wherein the photovoltaic panel 18 can be completely placed on the support plate 8.

[0025] In order to quickly vacuum the photovoltaic panel 18 before stamping, a telescopic sleeve 10 is provided on the lower wall of the pressing plate 7, and a negative pressure chamber 11 capable of covering the photovoltaic panel 18 and the support plate 8 is provided in the telescopic sleeve 10. The negative pressure device is installed in the frame 2, and an air hole 12 is provided on the workbench 4 on one side of the support plate 8. The air hole 12 is connected to the negative pressure chamber 11 through an air duct 13.

[0026] Among them, when the telescopic sleeve 10 contacts the workbench 4, the air hole 12 is located in the negative pressure chamber 11, and the lower end of the telescopic sleeve 10 is made of rubber material, so that the negative pressure chamber 11 can be sealed and connected to the workbench 4 to ensure the normal use of the negative pressure chamber 11.

[0027] The negative pressure device is an air pump 14 capable of suction and exhaust. The air pump 14 suctions air and creates a vacuum. After the stamping is completed, the air pump 14 exhausts air to reduce the negative pressure, thereby facilitating the separation of the negative pressure chamber 11 from the workbench 4.

[0028] In order to quickly heat-treat the photovoltaic panel 18 before stamping, a heating wire 15 is provided on the lower wall of the support plate 8. Under the action of the heating wire 15, the support plate 8 heats the photovoltaic panel 18, melting the solid EVA inside the component into liquid, which flows into the gaps between the battery cells, back panel and glass inside the component, and bonds the three together.

[0029] The side wall of the frame 2 is also provided with a control module electrically connected to an external power supply. The control module includes a touch screen 16 and a controller, wherein the controller is electrically connected to the air pump 14, the hydraulic rod 9, the heating wire 15, and the touch screen 16. The operation of the present invention is controlled by the touch screen 16. This is the prior art and will not be described in detail.

[0030] During specific use, the user places the photovoltaic panel 18 (cells, backplane, glass) in the center on the upper wall of the support plate 8, and the user presses the touch screen 16, which sends an electrical signal to the controller. The controller controls the heating wire 15 to be energized and heated. The heating wire 15 transfers heat to the photovoltaic panel 18 through the support plate 8, melting the solid EVA inside the photovoltaic panel 18 into liquid, which flows and fills the gaps between the cells, backplane, and glass inside the component; the user presses the touch screen 16, which sends an electrical signal to the controller, and the controller controls the hydraulic rod 9 to be energized and work. The hydraulic rod 9 extends, and the pressing plate 7 moves downward along the direction of the guide column 6. When the telescopic sleeve 10 contacts the workbench 4 and seals the lower end of the negative pressure chamber 11, the user presses the touch screen 16, and the touch screen 16 sends an electrical signal to the air pump 14. The air pump 14 sucks air and extracts the air in the negative pressure chamber 11 through the air guide tube 13, that is, vacuuming, and expelling the air between the battery cell, back plate, and glass, so that the liquid EVA bonds the battery cell, back plate, and glass together; the hydraulic rod 9 continues to extend, and the pressing plate 7 applies force to the photovoltaic panel 18 for solidification and cross-linking.

[0031] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A laminated structure of a photovoltaic module, characterized in that: The invention comprises a frame (2), a horizontally arranged working hole (3) is opened through the side wall of the frame (2), the lower wall of the working hole (3) is a working table (4), the upper wall of the working hole (3) is a supporting table (5), a plurality of guide columns (6) are fixed between the working table (4) and the supporting table (5), a pressing plate (7) capable of rising and falling along all the guide columns (6) is provided between the working table (4) and the supporting table (5), a supporting plate (8) for carrying a photovoltaic panel (18) is provided on the working table (4), a telescopic sleeve (10) is provided on the lower wall of the pressing plate (7), a negative pressure cavity (11) capable of covering the photovoltaic panel (18) and the supporting plate (8) is provided in the telescopic sleeve (10), and the negative pressure cavity (11) is connected to the negative pressure cavity (11) and the negative pressure cavity (11). The devices are connected; the caliber of the telescopic sleeve (10) is not larger than the size of the pressing plate (7), and the pressing plate (7) can completely cover the support plate (8); a hydraulic rod (9) is provided between the upper wall of the pressing plate (7) and the lower wall of the support platform (5), and the hydraulic rod (9) is vertically and centrally provided on the upper wall of the pressing plate (7); the negative pressure device is installed in the frame (2), and an air hole (12) is provided on the workbench (4) on one side of the support plate (8), and the air hole (12) is connected to the negative pressure chamber (11) through an air guide tube (13); when the telescopic sleeve (10) contacts the workbench (4), the air hole (12) is located in the negative pressure chamber (11); the lower wall of the support plate (8) is provided with an electric heating wire (15).

2. The laminated structure of a photovoltaic module according to claim 1, characterized in that: The negative pressure device is an air pump (14).

3. The laminated structure of a photovoltaic module according to claim 1, characterized in that: The lower end of the telescopic sleeve (10) is made of rubber.

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