Laminated plate pressurization driving device for photovoltaic module laminating machine and photovoltaic module laminating machine

Abstract

The utility model aims to provide a laminated board pressurizing driving device for a photovoltaic module laminating machine and the photovoltaic module laminating machine, aiming at the technical problem that the photovoltaic module laminating machine in the prior art is non-uniform in lamination of photovoltaic modules, the laminated board pressurizing driving device for the photovoltaic module laminating machine comprises a sealed chamber shell, an air-tight sealing elastic component is arranged in the sealing chamber shell, the outer periphery of the air-tight sealing elastic component is fixedly connected with the side portion of the air-tight sealing chamber shell, the sealing chamber is divided into an upper sealing chamber and a lower sealing chamber which are not communicated with each other, and a corrugated pipe is arranged in the lower sealing chamber. By adopting the laminated board pressurization driving device and the photovoltaic module laminating machine, the pressure applied by the laminated board pressurization driving device is more balanced, the problem that an air-tight sealing elastic part is easy to damage can be solved while flexible pressure application is realized, the difference between time when the laminated board pressurization driving device meets a photovoltaic module is small, the pressure application uniformity is good, and the production efficiency is high. The stroke of each drive device has a smaller difference than that of a mechanical drive device.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic module lamination equipment technology, and in particular to a rigid lamination plate pressure driving device for a photovoltaic module laminator and a photovoltaic module laminator. Background Technology

[0002] Currently, due to the increasing size of photovoltaic modules, the previously widely used silicone plate photovoltaic module laminators, which use a vacuum during lamination to cover the edges of the module, result in a thinner periphery than other areas. This is particularly noticeable in the lamination of large-size photovoltaic modules. While rigid photovoltaic module laminators theoretically provide uniform pressure on the photovoltaic modules through planar pressing, they have encountered numerous problems in actual testing. For example, they cannot withstand high pressure, leading to insufficient pressure on the modules and low production efficiency. Mechanical drive devices, such as hydraulic cylinders, provide driving force to the laminator to compress the photovoltaic modules. However, these mechanical drive devices themselves have a certain height, making them difficult to use in multi-layer photovoltaic module laminators. More importantly, as photovoltaic modules become larger, the surface area of ​​the laminator also increases, requiring multiple mechanical drive devices. Adjusting the force output of these mechanical devices is complex, and it is difficult for multiple drive devices to synchronize their movements and adjust the pressure. Therefore, these methods remain only in the theoretical design and testing stage and have not been widely applied. To this end, our company has conducted in-depth technical research on photovoltaic module laminators and achieved technological innovations and breakthroughs. Utility Model Content

[0003] The purpose of this invention is to address the technical problem of uneven lamination of photovoltaic modules in existing photovoltaic module laminators by providing a laminator pressurizing drive device and a photovoltaic module laminator.

[0004] The technical solution to the technical problem solved by this utility model is as follows:

[0005] A laminator pressurization drive device for a photovoltaic module laminator includes a sealed chamber housing. An airtight elastic component is disposed inside the sealed chamber housing. The outer periphery of the airtight elastic component is fixedly connected to the side of the airtight chamber housing, dividing the sealed chamber into an upper sealed chamber and a lower sealed chamber that are not interconnected. A bellows is disposed inside the lower sealed chamber. One end of the bellows is sealed and fixedly connected to the airtight elastic component, and the other end is fixedly connected to the lower end of the sealed chamber housing. A fixed shaft is located inside the bellows, with one end fixedly connected to the airtight elastic component and the other end used for fixed connection to the laminator. Both the upper and lower sealed chambers are provided with gas channels that communicate with a vacuum device and a gas filling device.

[0006] The gas-tight elastic component includes a flexible gas-tight elastic component and a movable plate. The movable plate is located below the flexible gas-tight elastic component and the two are fixedly connected. The flexible gas-tight elastic component divides the sealing chamber into an upper sealing chamber and a lower sealing chamber that are not connected vertically, and is fixedly connected to the sealing chamber shell. There is a gap between the movable plate and the sealing chamber shell that allows the movable plate to move within the sealing chamber shell.

[0007] The flexible airtight elastic component is ring-shaped, and its inner periphery is fixedly connected to the periphery of the moving plate. The flexible airtight elastic component is a silicone plate.

[0008] An upper fixing plate is provided above the flexible gas-tight elastic component. The upper fixing plate and the moving plate clamp and fix the flexible gas-tight elastic component. The periphery of the upper fixing plate is located inside the periphery of the moving plate.

[0009] The upper and lower ends of the bellows are respectively sealed and fixedly connected to the gas-tight elastic component and the sealing chamber shell through the bellows seat.

[0010] A photovoltaic module laminator includes a rigid laminator plate located below the top of the upper chamber and above the lamination worktable. The laminator plate is driven to move toward or away from the lamination worktable by a laminator plate pressurization drive device. The laminator plate is fixedly mounted at the other end of a fixed shaft using the aforementioned laminator plate pressurization drive device.

[0011] The laminate pressurizing drive device is located above the top of the upper box body. The fixed shaft passes through a through hole provided on the top of the upper box body, with one end inside the upper box body and the other end outside the upper box body. The upper box sealing and fixing structure located between the lower part of the sealing chamber shell and the upper box body seals the through hole opened on the upper box body for the fixed shaft to pass through. The lamination worktable is a heating plate, and the heating plate has a built-in heating device.

[0012] When the upper box body is closed with the lamination worktable, the upper box body forms a sealed lamination work chamber with the lamination worktable through the sealing component and sealing ring II located below it;

[0013] A flexible pad is provided on the lower surface of the laminate;

[0014] The photovoltaic module laminator is a multi-layer photovoltaic module laminator, which includes at least two upper chambers and lamination worktables. The lamination worktable of the upper photovoltaic module laminator is supported by the upper chamber of the lower photovoltaic module laminator.

[0015] The advantages and beneficial effects of this utility model are as follows:

[0016] The laminate pressurizing drive device and photovoltaic module laminator of this invention feature two sealed chambers, upper and lower. The pressure difference created by inflating the upper chamber and evacuating the lower chamber drives the laminate downwards, compressing the photovoltaic module. Because the evacuation and inflation pressures can be linearly adjusted, the pressure is easier to control. When multiple drive devices are used to drive the same laminate, all drive devices can share the same compressed air supply source and the same vacuum device for simultaneous air supply and evacuation, resulting in more balanced pressure application from the laminate pressurizing drive device. Furthermore, the photovoltaic module laminator and its laminate pressurizing drive device of this invention primarily use gas to support the laminate, achieving flexible pressure application while preventing damage to the gas-sealed elastic components. Compared to pneumatic and hydraulic cylinders, the laminate pressurizing drive device using the structure of this utility model has a certain amount of swaying during the downward movement of the laminate because the fixed shaft does not have a guiding device. Therefore, the laminate makes flexible contact with the module. When multiple drive devices are set, they are controlled by the same air source, and the expansion and contraction of the elastic gas seal is consistent. Therefore, the time difference of contact with the photovoltaic module is small, the pressure uniformity is good, and the stroke of each drive device is less different compared to mechanical types. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the upper box structure of the photovoltaic module laminator of this utility model;

[0018] Figure 2 This is a schematic diagram of the main structure of the photovoltaic module laminator of this utility model.

[0019] Figure 3 for Figure 2 Top view diagram;

[0020] Figure 4 for Figure 3 -A sectional view schematic diagram;

[0021] Figure 5 This is a schematic diagram of the structure of an embodiment of a multilayer photovoltaic module laminator;

[0022] Figure 6 for Figure 5 BB cross-sectional view;

[0023] Figure 7 for Figure 4 A magnified diagram of C;

[0024] Figure 8 for Figure 4 A magnified D-shaped diagram.

[0025] Explanation of reference numerals in the attached figures

[0026] 1- Photovoltaic Modules

[0027] 100-Component Transmission Assembly

[0028] 200-Laminated plate pressurization drive device; 201-Sealing chamber shell; 202-Air-tight elastic component; 203-Upper fixed plate; 204-Gas passage; 205-Belled sealing pipe; 206-Upper sealing chamber; 207-Lower sealing chamber; 208-Belled pipe fixing seat; 209-Fixed shaft; 210-Moving plate

[0029] 300 - Upper box body; 301 - Upper box sealing and fixing structure; 302 - Sealing assembly; 303 - Lamination working chamber; 305 - Sealing ring II

[0030] 400-Lower Box 401-Laminating Workbench

[0031] 500 - Pressure Application Component; 501 - Laminate; 502 - Flexible Gasket Detailed Implementation

[0032] The present invention will be further described in detail below through specific embodiments. The following embodiments are only descriptive and not limiting, and should not be used to limit the protection scope of the present invention.

[0033] like Figure 1-6As shown in the embodiment of this utility model, the pressurizing drive device for the photovoltaic module laminator includes a sealed chamber housing 201. An airtight elastic component 202 is provided inside the sealed chamber housing. The periphery of the airtight elastic component 202 is fixedly connected to the sealed chamber housing, dividing the sealed chamber housing into two sealed and non-communicating upper sealed chambers 206 and lower sealed chambers 207. Both the upper and lower sealed chambers are provided with gas channels 204 that are connected to a vacuum pump and an inflation device, respectively. A sealing bellows is provided inside the lower sealed chamber. The upper and lower ends of the sealing bellows are respectively sealed and fixedly connected to the lower surface of the airtight elastic component 202 and the bottom of the sealed chamber housing through bellows seats, so that the lower sealed chamber is not connected to the inner cavity of the bellows. A fixed shaft 209 is fixedly provided on the lower surface of the airtight elastic component 202. The fixed shaft 209 is located inside the inner cavity of the bellows, and the lower end of the fixed shaft is used to fixally connect to the laminator 501. The laminate pressurizing drive device of this invention employs an airtight elastic component 202 to isolate the upper and lower sealing chambers. By inflating and deflating the upper and lower sealing chambers, a pressure difference is created on both sides of the airtight elastic component, driving it to move upwards or downwards, thereby driving the laminate upwards or downwards. This compresses or detaches the photovoltaic module. The gas pressure adjustment is convenient and accurate, and the pressure increase is linear, resulting in gentle pressure application and easy control, which is beneficial for controlling the pressure on the photovoltaic module. Multiple laminate pressurizing drive devices can be connected to the same compressed gas source; therefore, the pressure applied by multiple laminate pressurizing drive devices is well-coordinated and easy to control. In this invention, the airtight elastic component can be flexible or semi-flexible. When a flexible airtight component is used, it can be a planar structure made of one or more of the following materials: silicone sheet, high airtight bio-based aromatic polyester elastomer, thermoplastic elastomer with an airtight layer, and high airtight bio-based thiophene polyester elastomer. When using a semi-flexible gas-tight elastic component, a structure combining a flexible gas-tight elastic component and a rigid component can be adopted. For example, the periphery of the flexible gas-tight elastic component is fixedly connected to the inner circumference of the sealing chamber shell, dividing the sealing chamber into an upper sealing chamber and a lower sealing chamber. A movable plate 210 is fixedly installed on the lower surface of the flexible gas-tight elastic component, and the upper end of a fixed shaft is fixedly connected to the lower surface of the movable plate 210. There is a gap between the periphery of the movable plate and the inner circumference of the sealing chamber shell, allowing the movable plate to move. In this way, the flexible gas-tight elastic component is supported by the movable plate. When air is filled into the upper sealing chamber, the flexible gas-tight elastic component deforms and elongates but does not form a bladder-like expansion, which is beneficial for the stable up-and-down movement of the laminate. To increase the firmness of the connection between the flexible gas-tight elastic component and the movable plate, an upper fixed plate 203 is provided. The flexible gas-tight elastic component is located between the upper fixed plate and the movable plate and is clamped and fixed by the two, which can prevent the flexible gas-tight elastic component from separating from the movable plate under the action of pressure difference. For example, the upper fixed plate and the movable plate can be fastened with bolts.Ideally, the perimeter of the upper fixed plate should be shorter than that of the moving plate, so that the flexible gas-tight elastic component has a portion above the moving plate that is not pressed down by the upper fixed plate. This allows the flexible gas-tight elastic component to be supported over a larger area while having sufficient elastic deformation space for vertical movement. Alternatively, the flexible gas-tight component can be annular, surrounding the perimeter of the moving plate. Its outer perimeter is fixedly connected to the sealing chamber shell, and its inner perimeter is fixedly connected to the outer perimeter of the moving plate. The upper fixed plate can also be annular, pressed and fixed above the inner perimeter of the flexible gas-tight component by bolts or other fastening devices, clamping and fixing the flexible gas-tight component together with the moving plate. Similarly, the outer perimeter of the upper fixed plate can be located inside the outer perimeter of the moving plate. Alternatively, the fixed part of the flexible gas-tight component is a certain distance from the outer perimeter of the moving plate, allowing the flexible gas-tight component to have an extendable annular portion.

[0034] In use, this laminating plate pressurizing drive device can be installed on the top outer side of the laminating working chamber or on the inner side of the laminating working chamber, depending on the specific working conditions. The technical content of this utility model will now be described in further detail, taking the example of the laminating plate pressurizing drive device being installed on the outer side of the upper chamber.

[0035] The photovoltaic module laminator of this embodiment includes an upper housing, a lamination worktable, a lamination plate 501, and a lamination plate pressurizing drive device 200. The lamination plate is a rigid, high-temperature resistant plate structure. The lamination worktable is supported by a lower housing. The lamination plate is horizontally positioned within the upper housing, with the lamination worktable located below it. The lamination worktable serves as a support for the photovoltaic module 1, and together with the lamination plate, it presses the photovoltaic module. Driven by the upper housing lifting drive device (not shown in the figure), the upper housing can rise or fall, thereby adjusting the distance between the lamination plate and the worktable. This allows the lamination plate pressurizing drive device to perform lamination within a short stroke, a process also known as the opening and closing process of the photovoltaic module laminator. The laminate pressurizing drive device is located on the outer side of the top of the upper chamber and is supported and fixed by the top of the upper chamber. A through hole is provided on the top of the upper chamber for the fixed shaft to pass through. A fixed sealing structure 301 is also provided on the top of the upper chamber or outside the lamination working chamber to fix and accommodate the sealing chamber shell. The fixed sealing structure and the sealing chamber shell are sealed and fixedly connected, forming a structure in which the lamination working chamber, the inner cavity of the bellows, and the inner cavity of the fixed sealing structure 301 are all connected. This prevents air leakage from the upper chamber at the through hole through which the fixed shaft passes, making the seal of the upper chamber firm and reliable. The laminate pressurizing drive device 200 is used to drive the laminate to move toward or away from the lamination working table, so that the laminate and the lamination working table together apply pressure to the photovoltaic module or make contact with the photovoltaic module without applying pressure.

[0036] This photovoltaic module laminator can be used for vacuum lamination as well as non-vacuum lamination. It can be used for vacuum or non-vacuum lamination curing, and also for non-vacuum cooling and pressurization. When operating under vacuum, the lamination working chamber, consisting of the upper chamber and the lamination worktable, must be a sealed chamber capable of being evacuated and pressurized. When the lamination working chamber is a sealed chamber, a sealing component 302 is installed at the lower end of the upper chamber, and the seal is achieved through a second sealing chamber located below the sealing component.

[0037] Each lamination chamber can contain one lamination plate, and each lamination plate is equipped with at least one lamination plate pressurization drive device. Typically, 4-8 lamination plate pressurization drive devices are used to ensure stable operation of the lamination plates. This design reduces the driving force of each device and also reduces the length, width, and thickness of the flexible gas-tight elastic components, thus extending their service life. Furthermore, when a flexible gas-tight elastic component is damaged, it can be replaced individually, reducing maintenance difficulty and saving production costs.

[0038] The following describes the working process of the laminating element and its pressurizing drive device of this utility model, taking vacuum lamination as an example: In the initial state, the upper box is in the open position, the upper sealing chamber is in a vacuum state, and the lower sealing chamber is in a gas-filled state. The optical component enters the designated position of the lamination worktable through the component transmission unit 100. When laminating, the upper box is driven to move downward, and its sealing ring 2 meets and closes with the lamination worktable to form a sealed lamination working chamber. After the cover is closed, the upper space and the lower space of the lamination plate are interconnected and under the same air pressure. The lamination working chamber is evacuated to a certain vacuum degree, the upper sealing chamber begins to be filled with gas, and the lower sealing chamber begins to be evacuated, causing the flexible gas seal to deform downward elastically. The moving plate and the fixed shaft move downward with the lamination plate to make the lamination plate contact the component for lamination. At the same time, as the vacuum chamber pressure increases, the lamination pressure will increase until the process pressure is reached. After lamination is complete, the lamination working chamber is inflated, the lower sealing chamber is inflated, and the upper sealing chamber is evacuated. The flexible gas seal's elasticity decreases the pressure above and increases the pressure below. When the pressure below exceeds the pressure above, its deformation decreases until it returns to its initial state. Then, evacuation of the upper sealing chamber and inflation of the lower sealing chamber are stopped, the cover is opened, and the module is transferred out of the lamination working chamber. The photovoltaic module laminator using this novel structure allows for continuous pressurization and depressurization of the laminator because the driving force of the laminator is determined by the inflation pressure in the upper sealing chamber and the vacuum level in the lower sealing chamber. Furthermore, one laminator can be equipped with two or more pressurization drive devices, thus providing high lamination pressure. The pressure increase is continuous, resulting in better module lamination uniformity, less residual air, and improved performance in addressing air bubbles and uneven lamination caused by residual air. This structure is an independent lamination structure; one or more modules can be laminated using an independent laminator. Throughout the lamination process, the elastic gas seal is supported by gas and is only subjected to its own tension, thus it is not easily damaged.

[0039] The photovoltaic module laminator of this invention does not have mechanical devices such as cylinders or hydraulic cylinders. Therefore, the height of its laminator pressurization drive device can be greatly reduced, which is beneficial for use in multi-layer photovoltaic module laminators.

[0040] This utility model provides a multi-layer photovoltaic module laminator, in which each layer of photovoltaic module laminator adopts the structure of the aforementioned single-layer photovoltaic module laminator. Two adjacent single-layer photovoltaic module laminators (single-layer photovoltaic module laminators are referred to as photovoltaic module laminators) are arranged one above the other. A support frame is provided on the top of the upper box. The lower box of the upper and lower photovoltaic module laminators is supported by the support frame of the upper photovoltaic module laminator, and the upper box of each layer of photovoltaic module laminator is supported by the upper box drive device.

[0041] It is best to place a flexible pad on the underside of the laminate. During lamination, the flexible pad will contact the photovoltaic module, which can reduce the impact between the rigid laminate and the photovoltaic module and reduce or prevent damage to the photovoltaic module.

[0042] Flexible high-temperature resistant elastic sealing components can be sheet-like components made of one or more of the following materials: elastic gas-tight fabric, high-airtightness bio-based aromatic polyester elastomer material, thermoplastic elastomer with an airtight layer, and high-airtightness bio-based thiophene polyester elastomer material.

Claims

1. A lamination plate pressurization driving device for a photovoltaic module laminator, characterized by: The application relates to a laminated plate pressurizing driving device, which comprises a sealed chamber shell, a gas seal elastic component arranged in the sealed chamber shell, a periphery of the gas seal elastic component fixedly connected with the side of the gas seal chamber shell, and the sealed chamber divided into an upper sealed chamber and a lower sealed chamber which are not communicated with each other, a bellows arranged in the lower sealed chamber, one end of the bellows fixedly connected with the gas seal elastic component, the other end fixedly connected with the lower end of the sealed chamber shell, a fixed shaft arranged in the bellows, one end of the fixed shaft fixedly connected with the gas seal elastic component, and the other end used for being fixedly connected with a laminated plate.

2. A laminate pressing drive apparatus for a photovoltaic module laminator as defined in claim 1, wherein: The gas seal elastic component comprises a flexible gas seal elastic component and a moving plate, the moving plate is arranged below the flexible gas seal elastic component and fixedly connected with the flexible gas seal elastic component, the flexible gas seal elastic component divides the sealed chamber into the upper sealed chamber and the lower sealed chamber which are not communicated with each other and is fixedly connected with the sealed chamber shell, and a gap is arranged between the moving plate and the sealed chamber shell so that the moving plate can move in the sealed chamber shell.

3. A laminate pressing drive apparatus for a photovoltaic module laminator as defined in claim 2, wherein: The flexible gas seal elastic component is annular, the inner periphery of the flexible gas seal elastic component is fixedly connected with the periphery of the moving plate, and the flexible gas seal elastic component is a silica gel plate.

4. A laminate pressing drive apparatus for a photovoltaic module laminator as claimed in claim 2 or 3, characterized in that: An upper fixed plate is arranged above the flexible gas seal elastic component, the upper fixed plate and the moving plate clamp and fix the flexible gas seal elastic component, and the periphery of the upper fixed plate is located in the inner side of the periphery of the moving plate.

5. A laminate pressing drive apparatus for a photovoltaic module laminator as defined in claim 1, wherein: The upper end and the lower end of the bellows are fixedly connected with the gas seal elastic component and the sealed chamber shell through bellows bases respectively.

6. A photovoltaic module laminator comprising a rigid laminating plate, the rigid laminating plate being located above a lamination table below the top of an upper box housing, the laminating plate being driven by a laminating plate pressurized drive to move towards or away from the lamination table, characterized in that: The laminated plate pressurizing driving device is arranged above the top of the upper box body, one end of the fixed shaft is located in the upper box body and the other end is located outside the upper box body, the through hole for the fixed shaft to pass through is arranged on the upper box body, the upper box is sealed by the upper box sealing fixed structure arranged between the lower part of the sealed chamber shell and the upper box body, the laminated workbench is a heating plate, and the heating plate is internally provided with a heating device.

7. A photovoltaic module laminator as defined in claim 6, wherein: When the upper box body is closed with the laminated workbench, the upper box body and the laminated workbench form a sealed laminated work cavity through the sealing assembly and the sealing ring two arranged below the upper box body.

8. A photovoltaic module laminator as defined in claim 6, wherein: The lower surface of the laminated plate is provided with a flexible gasket.

9. A photovoltaic module laminator as defined in claim 6, wherein: The photovoltaic module laminating machine is a multi-layer photovoltaic module laminating machine, which comprises at least two upper box bodies and laminated workbenches, the laminated workbench of the photovoltaic module laminating machine arranged above is supported by the upper box body of the photovoltaic module laminating machine arranged below.

10. A photovoltaic module laminator as defined in claim 6, wherein: ​

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