Photovoltaic module laminating machine

Abstract

The invention provides a photovoltaic module laminating machine which comprises n laminating units, each laminating unit comprises a hot pressing plate, a downward pressing driving part and a pressing plate, a laminating cavity with a downward opening is formed in each hot pressing plate, the downward pressing driving parts are installed on the hot pressing plates and located above the laminating cavities, and the pressing plates are arranged on the hot pressing plates; the pressing plate is connected to the movable part of the downward pressing driving part and is positioned in the laminating cavity; the lamination driving mechanism is used for driving the n lamination units to synchronously lift so as to close or open two adjacent lamination units; and when two adjacent laminating units are covered, the pressing driving piece drives the pressing plate to descend so as to drive the pressing plate to laminate the photovoltaic module. According to the photovoltaic module laminating machine, the hot pressing plate of each laminating unit is provided with the downward pressing driving piece for driving the pressing plate to ascend and descend, and after the adjacent laminating units are covered, the downward pressing driving piece can drive the pressing plate to descend by the preset height according to the laminating requirement, so that the laminating force is flexibly adjusted, and the laminating effect on the photovoltaic module is ensured.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic cell production, and in particular to a photovoltaic module laminating machine. Background Art

[0002] The encapsulation of photovoltaic modules is a crucial step in the production process, ensuring their weather resistance. The most common equipment used for this process is a laminator, which uses vacuum to remove air from the module. Heat is then applied to melt the EVA adhesive, bonding the cells, cover glass, and backsheet together. Finally, atmospheric pressure is applied to the laminator, securing the cover glass, cells, and backsheet together.

[0003] In traditional photovoltaic module laminating machines, after the adjacent laminating units are closed, the pressing plates cannot continue to press down toward the photovoltaic modules, and the laminating pressure on the photovoltaic modules cannot be flexibly adjusted, resulting in the photovoltaic module laminating machine being unable to meet the different laminating requirements for different models of photovoltaic modules. Summary of the Invention

[0004] In response to the above-mentioned problems existing in traditional photovoltaic module laminators, this application provides a photovoltaic module laminator, and its detailed technical solution is as follows:

[0005] A photovoltaic module laminating machine, comprising:

[0006] n laminating units spaced apart in a vertical direction, the laminating units comprising a hot press plate, a downward-opening laminating cavity formed in the hot press plate, a fixed component of the downward-pressing driver mounted on the hot press plate and located above the laminating cavity, the pressing plate being horizontally connected to a movable component of the downward-pressing driver, and the pressing plate being located within the laminating cavity;

[0007] A laminating drive mechanism is used to drive n laminating units to rise and fall synchronously, so that two adjacent laminating units can be closed or opened;

[0008] When two adjacent lamination units are closed, the downward driving member drives the pressing plate to descend, so as to drive the pressing plate to laminate the photovoltaic components located in the lamination cavity.

[0009] The photovoltaic module laminating machine provided in the present application is provided with a downward pressure driving component for driving the pressure plate to rise and fall on the hot pressing plate of each laminating unit. After the adjacent laminating units are closed, the downward pressure driving component can drive the pressure plate to descend to a predetermined height according to the lamination requirements, thereby implementing flexible adjustment of the lamination pressure to ensure the lamination effect of the photovoltaic modules.

[0010] In some embodiments, a mounting hole is provided on the hot pressing plate, and the downward pressing driving component is a servo hydraulic cylinder, wherein the cylinder body of the servo hydraulic cylinder is installed in the mounting hole, the driving rod of the servo hydraulic cylinder is downwardly inserted into the lamination cavity, and the pressing plate is connected to the lower end of the driving rod.

[0011] The installation holes on the hot press plate provide ample space for the downward pressure actuator. The use of a servo hydraulic cylinder as the downward pressure actuator ensures that the downward pressure actuator can apply sufficient lamination pressure to the photovoltaic module, further ensuring the lamination effect.

[0012] In some embodiments, at least two downward pressing driving members are provided, and the two downward pressing driving members synchronously drive the pressing plate to rise and fall.

[0013] The two downward driving parts cooperate to drive the pressure plate to rise and fall from different positions, so that the pressure plate can be kept in a horizontal state while pressing down, thereby improving the lamination uniformity of the photovoltaic modules and preventing the photovoltaic modules from being deformed due to uneven force.

[0014] In some embodiments, the photovoltaic module laminator further includes a flexible pad adsorbed on the lower surface of the pressing plate.

[0015] Flexible lamination of photovoltaic modules is achieved, reducing the risk of laminated modules being damaged by compression.

[0016] In some embodiments, an adsorption hole is provided on the pressing plate, and the adsorption port of the adsorption hole is located on the lower surface of the pressing plate; the laminating unit also includes a first exhaust hole connected to the adsorption hole, and the first exhaust hole is used to exhaust the adsorption hole so that the flexible pad is adsorbed on the lower surface of the pressing plate.

[0017] The flexible pad is adsorbed and fixed on the lower surface of the pressing plate, which facilitates the disassembly, assembly and maintenance of the flexible pad.

[0018] In some embodiments, among two adjacent laminating units, a second exhaust hole is provided on the hot pressing plate of the laminating unit located below, and the second exhaust hole has an exhaust port located on the upper surface of the hot pressing plate; when the two adjacent laminating units are covered, the second exhaust hole is used to vacuum the laminating cavity of the laminating unit located above.

[0019] As two adjacent laminating units press the photovoltaic module between them from above and below, an exhaust device evacuates the laminating chamber of the upper laminating unit through a second exhaust hole, and heats the photovoltaic module via a hot press. This melts the EVA inside the heated photovoltaic module. Finally, under the continued pressure of the press, the melted EVA bonds and solidifies the solar cells, cover glass, and backsheet together.

[0020] In some embodiments, a sealing ring is provided at the bottom of the hot pressing plate, which surrounds the periphery of the lamination cavity; when two adjacent lamination units are closed, the sealing ring elastically presses against the hot pressing plate of the lamination unit located below.

[0021] By providing a sealing ring, after two adjacent laminating units are covered, the sealing performance of the laminating cavity therebetween meets the vacuuming requirement.

[0022] In some embodiments, a heating module is provided on the lower surface of the hot pressing plate, and the heating module is used to heat the hot pressing plate.

[0023] By arranging a heating module on the lower surface of the hot pressing plate, the hot pressing plate has heating performance.

[0024] In some embodiments, the photovoltaic module laminator also includes a heating base located below the n lamination units; when the lamination drive mechanism drives the n lamination units to rise and fall synchronously, the lamination unit located at the bottom is closed or opened with the heating base, and when the lamination unit located at the bottom is closed with the heating base, the heating base heats and laminates the photovoltaic modules in the lamination cavity of the bottom lamination unit.

[0025] By providing a heating base, the laminating unit at the bottom cooperates with the hot base to implement the lamination of photovoltaic modules, further improving the processing capacity of the photovoltaic module laminator.

[0026] In some embodiments, the lamination drive mechanism is provided in two groups, and the two groups of lamination drive mechanisms are located on opposite sides of the n lamination units, and the two groups of lamination drive mechanisms synchronously drive the n lamination units to rise and fall synchronously from both sides.

[0027] Two sets of lamination drive mechanisms drive n lamination units to rise and fall synchronously from both sides, which can improve the stability of the lamination units during the lifting process and ensure that adjacent lamination units can be covered smoothly.

[0028] In some embodiments, the lamination drive mechanism includes a lifting drive device and a telescopic connection member, the upper end of the telescopic connection member is connected to the lamination unit located at the top, the lower end of the telescopic connection member is connected to the lamination unit located at the bottom, and the remaining lamination units are all connected to the telescopic connection member; the lifting drive device is used to drive the telescopic connection member to extend and retract in the vertical direction to drive n lamination units to rise and fall synchronously.

[0029] The invention provides a laminating drive mechanism with simple structure and stable driving, and can ensure synchronous lifting and lowering of n laminating units. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 Schematic diagram of the cross-sectional structure of a photovoltaic module laminator in an embodiment of the present application;

[0031] Figure 2 for Figure 1 A partial enlarged view of area A in FIG;

[0032] Figures 1 to 2 Included are:

[0033] Laminating unit 1: hot pressing plate 11, pressing drive 12, pressing plate 13, laminating chamber 14, flexible pad 15, first air extraction hole 16, second air extraction hole 17, sealing ring 18, heating module 19, fixed part 121, movable part 122, adsorption hole 131,

[0034] Lamination drive mechanism 2: lifting drive device 21, telescopic connecting member 22. DETAILED DESCRIPTION

[0035] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0036] like Figure 1 As shown, the photovoltaic module laminating machine in the embodiment of the present application includes:

[0037] n vertically spaced lamination units 1, wherein n are at least Figure 1 The laminating unit 1 includes a hot press plate 11, a downward-opening laminating chamber 14, a fixed component 121 of the downward-pressing driver 12 is mounted on the hot press plate 11 and is located above the laminating chamber 14, and the pressing plate 13 is horizontally connected to the movable component 122 of the downward-pressing driver 12. The pressing plate 13 is located in the laminating chamber 14.

[0038] The lamination drive mechanism 2 is used to drive n lamination units 1 to rise and fall synchronously, so that two adjacent lamination units 1 can be closed or opened.

[0039] When two adjacent laminating units 1 are closed, the downward driving member 2 drives the pressing plate 13 to descend, so as to drive the pressing plate 13 to laminate the photovoltaic components 100 located in the laminating cavity 14 .

[0040] The working process of the photovoltaic module laminator in the embodiment of the present application is as follows:

[0041] The laminating drive mechanism 2 drives n laminating units 1 to rise synchronously, so that adjacent laminating units 1 are opened. The pressing drive member 2 drives the pressing plate 13 to rise to a high position.

[0042] The photovoltaic module 100 is transported to adjacent lamination units 1 .

[0043] Next, the lamination drive mechanism 2 drives n lamination units 1 to descend synchronously, so that adjacent lamination units 1 are covered, and the photovoltaic assembly 100 enters the lamination cavity 14 located above.

[0044] Next, the downward driving members 2 in each lamination cavity 14 drive the pressing plate 13 to descend until the pressing plate 13 is pressed against the photovoltaic module 100 with a predetermined pressing force, thereby laminating the photovoltaic module 100 .

[0045] In the photovoltaic module laminating machine of the embodiment of the present application, each laminating unit 1 is provided with a downward pressing drive 12 on the hot pressing plate 11 for driving the pressing plate 13 to rise and fall. After the adjacent laminating units 1 are closed, the downward pressing drive 12 of the laminating unit 1 located above can drive the pressing plate 13 to a predetermined height according to the lamination requirements, thereby ensuring that the pressing plate 13 laminates the photovoltaic modules with a predetermined pressing force, ultimately ensuring the lamination effect of the photovoltaic modules.

[0046] Optionally, the hot press plate 11 is provided with a mounting hole, and the downward pressure driving member 12 is a servo hydraulic cylinder. The cylinder body (i.e., fixed component 121) of the servo hydraulic cylinder is installed in the mounting hole, and the driving rod (i.e., movable component 122) of the servo hydraulic cylinder is downwardly inserted into the lamination chamber 14. The pressing plate 13 is connected to the lower end of the driving rod. Using a servo hydraulic cylinder as the downward pressure driving member 12 ensures that the downward pressure driving member 12 can apply sufficient lamination pressure to the photovoltaic module, further ensuring the lamination effect.

[0047] Optional, such as Figure 1 As shown, two downward-pressing driving members 12 are provided, and the two downward-pressing driving members 12 synchronously drive the pressing plate 13 up and down. The two downward-pressing driving members 12 cooperate to drive the pressing plate 13 up and down from two different positions, allowing the pressing plate 13 to maintain a horizontal state during pressing, thereby improving the lamination uniformity of the photovoltaic modules and preventing deformation of the photovoltaic modules due to uneven force. Of course, other numbers of downward-pressing driving members 12, such as three or four, can also be provided.

[0048] Optionally, the photovoltaic module laminator in the embodiment of the present application further includes a flexible pad 15 adsorbed on the lower surface of the pressing plate 13. During the lamination process, the flexible pad 15 can achieve buffered contact between the pressing plate 13 and the photovoltaic module, allowing the pressing plate 13 to perform flexible lamination of the photovoltaic module, reducing the risk of damage to the laminated module.

[0049] Optionally, the pressing plate 13 is provided with suction holes 131, the suction ports of which are located on the lower surface of the pressing plate 13. The laminating unit 1 also includes a first air extraction hole 16 in communication with the suction holes 131. The first air extraction hole 16 is used to evacuate the suction holes 131, thereby securing the flexible pad 15 to the lower surface of the pressing plate by suction. The flexible pad 15 is attached to the lower surface of the pressing plate 13 by suction, making it easy to disassemble, install, and maintain the flexible pad 15.

[0050] Optionally, in two adjacent laminating units 1, the hot pressing plate 11 of the laminating unit 1 located below is provided with a second exhaust hole 17, wherein the second exhaust hole 17 has an exhaust port located on the upper surface of the hot pressing plate 11. When the two adjacent laminating units 1 are closed, the second exhaust hole 17 is used to evacuate the laminating chamber 114 of the laminating unit 1 located above.

[0051] As two adjacent laminating units 1 press the photovoltaic module 100 between them from above and below, an exhaust device evacuates the laminating chamber 14 of the upper laminating unit 1 through the second exhaust hole 17, and heats the photovoltaic module via the hot press plate 11. This melts the EVA within the heated photovoltaic module. Finally, under the continued pressure of the press plate 13, the melted EVA bonds and solidifies the solar cells, cover glass, and backsheet together.

[0052] Optionally, a sealing ring 18 is provided at the bottom of the hot pressing plate 11, which surrounds the circumference of the laminating chamber 14. When two adjacent laminating units 1 are closed, the sealing ring 18 elastically presses against the hot pressing plate 11 of the laminating unit 1 located below, thereby ensuring that the sealing of the laminating chamber 14 meets the vacuum requirements.

[0053] Optionally, a heating module 19 is provided on the lower surface of the hot pressing plate 11, and the heating module 19 is used to heat the hot pressing plate 11, so that the hot pressing plate 11 has heating performance. The heating module 19 can be, for example, an electromagnetic heating element, a resistance heating element, or an oil heating element.

[0054] like Figure 1 As shown, the photovoltaic module laminating machine in the embodiment of the present application optionally further includes a heating base located below the n laminating units 1. When the laminating drive mechanism 2 drives the n laminating units 1 to rise and fall synchronously, the bottom laminating unit 1 is closed or opened with the heating base. When the bottom laminating unit 1 is closed with the heating base, the heating base cooperates with the bottom laminating unit 1 to laminate the photovoltaic modules within the laminating cavity 14 of the bottom laminating unit 1.

[0055] By providing a heating base, the laminating unit 1 located at the bottom cooperates with the heating base to implement lamination of the photovoltaic modules, thereby improving the processing capacity of the photovoltaic module laminator in the embodiment of the present application.

[0056] Continue to refer Figure 1 As shown, optionally, the lamination drive mechanism 2 is provided in two groups, and the two groups of lamination drive mechanisms 2 are located on opposite sides of the n lamination units 1, and the two groups of lamination drive mechanisms 2 synchronously drive the n lamination units 1 to rise and fall synchronously from both sides.

[0057] The two sets of lamination drive mechanisms 2 drive n lamination units 1 synchronously from both sides to rise and fall synchronously, which can improve the stability of the lamination units 1 during the lifting process and ensure that adjacent lamination units 1 can be smoothly closed.

[0058] Optionally, the laminating drive mechanism 2 includes a lifting drive device 21 and a telescopic connector 22. The upper end of the telescopic connector 22 is connected to the uppermost laminating unit 1, and the lower end of the telescopic connector 22 is connected to the lowermost laminating unit 1. The remaining laminating units 1 are all connected to the telescopic connector 22. The lifting drive device 21 is used to drive the telescopic connector 22 to extend and retract in the vertical direction, thereby driving the n laminating units 1 to rise and fall synchronously.

[0059] When the lifting drive 21 drives the telescopic connector 22 to extend upward, the n laminating units 1 are synchronously raised under the drive of the telescopic connector 22, and the adjacent laminating units 1 are opened. When the lifting drive 21 drives the telescopic connector 22 to retract downward, the n laminating units 1 are synchronously lowered under the drive of the telescopic connector 22, and the adjacent laminating units 1 are closed.

[0060] The lifting drive device 21 may be a hydraulic cylinder, for example.

[0061] The present application has been described above in sufficient detail with certain specificity. Those skilled in the art will understand that the descriptions in the examples are merely illustrative, and that all modifications made without departing from the true spirit and scope of the present application are intended to be within the scope of protection of the present application. The scope of protection claimed in the present application is defined by the claims, not by the description in the examples.

Claims

1. A photovoltaic module laminating machine, characterized in that: The photovoltaic module laminator comprises: n laminating units spaced apart in a vertical direction, each of the laminating units comprising a hot press plate, a downward-opening laminating cavity formed in the hot press plate, a fixed component of the downward-pressing driver mounted on the hot press plate and located above the laminating cavity, the pressing plate being horizontally connected to a movable component of the downward-pressing driver, and the pressing plate being located in the laminating cavity; a laminating drive mechanism, the laminating drive mechanism being used to drive n laminating units to rise and fall synchronously, so that two adjacent laminating units are closed or opened; When two adjacent laminating units are closed, the downward driving member drives the pressing plate to descend, so as to drive the pressing plate to laminate the photovoltaic components located in the laminating cavity.

2. The photovoltaic module laminating machine according to claim 1, characterized in that: A mounting hole is provided on the hot pressing plate, and the downward pressing driving component is a servo hydraulic cylinder, wherein the cylinder body of the servo hydraulic cylinder is installed in the mounting hole, the driving rod of the servo hydraulic cylinder is downwardly inserted into the lamination cavity, and the pressing plate is connected to the lower end of the driving rod.

3. The photovoltaic module laminator according to claim 1, characterized in that: At least two downward-pressing driving members are provided, and the two downward-pressing driving members synchronously drive the pressing plate to rise and fall.

4. The photovoltaic module laminating machine according to claim 1, wherein: The photovoltaic module laminator further includes a flexible pad adsorbed on the lower surface of the pressing plate.

5. The photovoltaic module laminating machine according to claim 4, characterized in that: The pressing plate is provided with adsorption holes, and the adsorption ports of the adsorption holes are located on the lower surface of the pressing plate; The laminating unit further includes a first air extraction hole communicated with the adsorption hole, and the first air extraction hole is used to extract air from the adsorption hole so that the flexible pad is adsorbed on the lower surface of the pressing plate.

6. The photovoltaic module laminating machine according to claim 1, wherein: Among the two adjacent laminating units, the hot pressing plate of the laminating unit located below is provided with a second air extraction hole, and the second air extraction hole has an air extraction port located on the upper surface of the hot pressing plate; When two adjacent laminating units are closed, the second air extraction hole is used to evacuate the laminating cavity of the laminating unit located above.

7. The photovoltaic module laminating machine according to claim 1, wherein: A sealing ring is provided at the bottom of the hot pressing plate, and the sealing ring surrounds the circumference of the lamination cavity; When two adjacent laminating units are closed, the sealing ring is elastically pressed against the hot pressing plate of the laminating unit located below.

8. The photovoltaic module laminating machine according to claim 1, wherein: A heating module is provided on the lower surface of the hot pressing plate, and the heating module is used to heat the hot pressing plate.

9. The photovoltaic module laminating machine according to claim 1, wherein: The photovoltaic module laminator further comprises a heating base located below the n laminating units; When the lamination drive mechanism drives n lamination units to rise and fall synchronously, the lamination unit located at the bottom is closed or opened with the heating base. When the lamination unit located at the bottom is closed with the heating base, the heating base heats and laminates the photovoltaic components in the lamination cavity of the lamination unit at the bottom.

10. The photovoltaic module laminating machine according to claim 1, wherein: The lamination drive mechanisms are provided in two groups, and the two groups of lamination drive mechanisms are located on opposite sides of the n lamination units. The two groups of lamination drive mechanisms synchronously drive the n lamination units to rise and fall synchronously from both sides.

11. The photovoltaic module laminating machine according to claim 1, wherein: The laminating drive mechanism includes a lifting drive device and a telescopic connection member, wherein the upper end of the telescopic connection member is connected to the laminating unit located at the top, and the lower end of the telescopic connection member is connected to the laminating unit located at the bottom, and the remaining laminating units are all connected to the telescopic connection member; The lifting drive device is used to drive the telescopic connection member to extend and retract in the vertical direction, so as to drive the n lamination units to rise and fall synchronously.

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