Panel pressing type photovoltaic module laminating machine and laminated board pressurization driving device used by same

Abstract

In order to solve the technical problem that a photovoltaic module laminating machine in the prior art is uneven in lamination of a photovoltaic module, the invention provides a plate pressing type photovoltaic module laminating machine and a laminated plate pressurization driving device used by the same, and the laminated plate pressurization driving device used by 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. According to the laminated board pressurization driving device and the board pressing type photovoltaic module laminating machine, the pressing pressure of the laminated board pressurization driving device is more balanced, all the driving devices are controlled through the same air source, the stretching amount of the elastic air sealing piece is consistent, the time difference between the elastic air sealing piece and a photovoltaic module is small, and the pressing uniformity is good; the stroke of each drive device has a smaller difference than that of a mechanical drive device.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic module lamination equipment, and particularly to a rigid plate-pressing type photovoltaic module laminator and a laminate pressing drive device used therefor. Background Art

[0002] At present, due to the increasing size of photovoltaic modules, the previously widely used silicone plate type photovoltaic module laminator has the problem that when laminating, under the action of vacuum, the silicone plate wraps the edges of the module, and the extrusion force received by the periphery of the module is greater than that of other parts, resulting in the thickness of the periphery of the module being thinner than that of other parts. This is more obvious in the lamination of large-sized photovoltaic modules. Although the rigid plate-pressing type photovoltaic module laminator is theoretically a planar press and the pressure on the photovoltaic module is uniform, many problems have also occurred in actual tests. For example, it cannot withstand a relatively large pressure, resulting in insufficient pressure on the module and low production efficiency. Mechanical drive devices such as hydraulic cylinders are used as pressure sources to provide driving force to the laminate to squeeze the photovoltaic module. However, the mechanical drive device itself has a certain size and height. Therefore, it is difficult to be actually used in a multi-layer photovoltaic module laminator. More importantly, as the size of the photovoltaic module increases, the surface area of the laminate also increases, and multiple mechanical drive devices are required for driving. The adjustment of the force output of mechanical devices is relatively complex, and it is difficult for multiple mechanical drive devices to be in step, and the adjustment of pressure is also relatively difficult. Therefore, it only stays in the theoretical design and test stage and has not been widely applied. For this reason, our unit has conducted in-depth technical research on photovoltaic module laminators and achieved technological innovation and breakthroughs. Summary of the Invention

[0003] The purpose of the present invention is to provide a plate-pressing type photovoltaic module laminator and a laminate pressing drive device used therefor in view of the technical problem of uneven lamination of photovoltaic modules by existing photovoltaic module laminators.

[0004] The technical solution for the present invention to solve the technical problem is as follows: A laminate pressing drive device for a photovoltaic module laminator, comprising a sealed chamber housing. An airtight elastic member is arranged in the sealed chamber housing. The outer periphery of the airtight elastic member is fixedly connected to the side of the airtight chamber housing, and divides the sealed chamber into a non-communicating upper sealed chamber and a lower sealed chamber. A bellows is arranged in the lower sealed chamber. One end of the bellows is fixedly connected to the airtight elastic member in a sealed manner, and the other end is fixedly connected to the lower end of the sealed chamber housing. A fixed shaft is located inside the bellows. One end of the fixed shaft is fixedly connected to the airtight elastic member, and the other end is used for fixedly connecting to the laminate. Gas channels communicating with a vacuum device and an inflation device are provided in both the upper sealed chamber and the lower sealed chamber; The described airtight elastic component includes a flexible airtight elastic component and a moving plate. The moving plate is located below the flexible airtight elastic component and the two are fixedly connected. The flexible airtight elastic component divides the sealing chamber into the upper sealing chamber and the lower sealing chamber which are not connected up and down, and is fixedly connected to the sealing chamber housing. There is a gap between the moving plate and the sealing chamber housing that enables the moving plate to move within the sealing chamber housing. The described flexible airtight elastic component is annular, and its inner periphery is fixedly connected to the periphery of the moving plate. The flexible airtight elastic component is a silica gel plate. An upper fixing plate is arranged above the flexible airtight elastic component. The upper fixing plate and the moving plate clamp and fix the flexible airtight elastic component. The periphery of the upper fixing plate is located inside the periphery of the moving plate. The upper end and the lower end of the corrugated pipe are respectively hermetically and fixedly connected to the airtight elastic component and the sealing chamber housing through corrugated pipe seats.

[0005] A plate-pressing type photovoltaic module laminator, the photovoltaic module laminator includes a rigid laminating plate. The rigid laminating plate is located below the top of the upper box body and above the laminating workbench. The laminating plate is driven by a laminating plate pressing drive device to move towards or away from the laminating workbench. Using the above laminating plate pressing drive device, the laminating plate is fixedly arranged at the other end of the fixed shaft. The described laminating plate pressing drive device is located above the top of the upper box body. The fixed shaft passes through a through hole provided in the top of the upper box body. One end is located inside the upper box body and the other end is located outside the upper box body. The through hole provided in the upper box body for the fixed shaft to pass through is sealed by an upper box sealing and fixing structure between the lower part of the sealing chamber housing and the upper box body. The laminating workbench is a heating plate, and a heating device is built in the heating plate. When the upper box body and the laminating workbench are closed, the upper box body forms a sealed laminating working cavity with the laminating workbench through a sealing component and a second sealing ring arranged below it. A flexible gasket is arranged on the lower surface of the laminating plate. The photovoltaic module laminator is a multi-layer photovoltaic module laminator, including at least two or more upper box bodies and laminating workbenches. The laminating workbench of the photovoltaic module laminator located above is supported by the upper box body of the photovoltaic module laminator located below.

[0006] The advantages and beneficial effects of the present invention are: The laminate pressing drive device and the plate pressing type photovoltaic module laminator adopting the structure of the present invention are provided with upper and lower sealing chambers. The pressure difference generated by inflating the upper sealing chamber and evacuating the lower sealing chamber is used to drive the laminate to move downward to press the photovoltaic module. Since 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, the same compressed air supply source and the same vacuum pumping device can be adopted among the drive devices to supply air and pump air simultaneously, so that the pressing pressure of the laminate pressing drive device is more balanced. In addition, for the photovoltaic module laminator and its laminate pressing drive device adopting the structure of the present invention, the force supporting the laminate is mainly gas, which can realize flexible pressing and prevent the problem that the airtight elastic components are easily damaged. Compared with the drive of cylinders and hydraulic cylinders, the laminate pressing drive device adopting the structure of the present invention has a certain amount of shaking during the downward movement of the laminate because the fixed shaft is not provided with a guiding device. Therefore, when the laminate contacts the module, it is a flexible contact. When multiple drive devices are provided, the drive devices are controlled by the same air source, and the telescopic amounts of the elastic airtight members are the same. Therefore, the time difference when meeting the photovoltaic module is small, the pressing uniformity is good, and the stroke differences of the drive devices are smaller than those of mechanical types. Description of the Drawings

[0007] Figure 1 It is a schematic structural diagram of an embodiment of the upward view of the upper box of the photovoltaic module laminator of the present invention; Figure 2 It is a schematic front view of the overall structure of the photovoltaic module laminator of the present invention.

[0008] Figure 3 It is Figure 2 a schematic top view; Figure 4 It is Figure 3 a schematic A-A sectional view of; Figure 5 It is a schematic structural diagram of an embodiment of a multi-layer photovoltaic module laminator; Figure 6 It is Figure 5 a B-B sectional view of; Figure 7 It is Figure 4 a schematic enlarged view of C of; Figure 8 It is Figure 4 a schematic enlarged view of D of.

[0009] Description of the Reference Numerals 1 - Photovoltaic module 100 - Component transmission unit 200 - Laminate Pressing Drive Device 201 - Sealed Chamber Housing 202 - Gas - tight Elastic Component 203 - Upper Fixed Plate 204 - Gas Channel 205 - Corrugated Sealing Tube 206 - Upper Sealed Chamber 207 - Lower Sealed Chamber 208 - Bellows Fixed Seat 209 - Fixed Shaft 210 - Movable Plate 300 - Upper Box Housing 301 - Upper Box Sealing and Fixing Structure 302 - Sealing Assembly 303 - Laminating Working Chamber 305 - Second Sealing Ring 400 - Lower Box 401 - Laminating Workbench 500 - Pressing Component 501 - Laminate Plate 502 - Flexible Gasket Specific Embodiment

[0010] The present invention will be further described in detail below through specific embodiments. The following embodiments are only descriptive and not restrictive, and the protection scope of the present invention cannot be limited thereby.

[0011] As Figures 1-6As shown in the figure, the laminate pressing drive device for a photovoltaic module laminator with the structure of the embodiment of the present invention includes a sealed chamber housing 201. An airtight elastic member 202 is arranged in the cavity of the sealed chamber housing. The periphery of the airtight elastic member 202 is fixedly connected to the sealed chamber housing, dividing the sealed chamber housing into an upper sealed chamber 206 and a lower sealed chamber 207 that are hermetically separated from each other. Gas channels 204 are respectively arranged in the upper sealed chamber and the lower sealed chamber and are communicated with a vacuum pumping device and an inflation device. A sealed bellows is arranged in the lower sealed chamber. The upper and lower ends of the sealed bellows are respectively hermetically and fixedly connected to the lower surface of the airtight elastic member 202 and the bottom of the sealed chamber housing through bellows seats, so that the lower sealed chamber is not communicated with the inner cavity of the bellows. A fixed shaft 209 is fixedly arranged on the lower surface of the airtight elastic member 202. The fixed shaft 209 is located in the inner cavity of the bellows, and the lower end of the fixed shaft is used for fixedly connecting with the laminate 501. With the laminate pressing drive device having the above structure of the present invention, the airtight elastic member 202 is used to isolate the upper sealed chamber and the lower sealed chamber. By inflating and evacuating the upper sealed chamber and the lower sealed chamber, a pressure difference is generated on both sides of the airtight elastic member to drive the airtight elastic member to move upward or downward, thereby driving the laminate to move upward or downward, squeezing or disengaging from the photovoltaic module. The adjustment of the gas pressure is convenient, accurate, and the increase in pressure is linearly variable. The pressure application is gentle and easy to control, which is more conducive to the control of the pressure on the photovoltaic module. Multiple laminate pressing drive devices can be connected to the same compressed gas source. Therefore, the pressure application of multiple laminate pressing drive devices has good coordination and consistency and is easy to control. In the structure of the present invention, the airtight elastic member can be flexible or semi-flexible. When a flexible airtight member is adopted, a planar structure made of one or more of a silica gel plate, a high-airtightness bio-based aromatic polyester elastomer material, a thermoplastic elastomer with an airtight layer, and a high-airtightness bio-based thiophene polyester elastomer material can be used. When a semi-flexible airtight elastic member is adopted, a structure combining a flexible airtight elastic member and a rigid member can be used. For example, the periphery of the flexible airtight elastic member is fixedly connected to the inner periphery of the sealed chamber housing, dividing the sealed chamber into an upper sealed chamber and a lower sealed chamber. A moving plate 210 is fixedly arranged on the lower surface of the flexible airtight elastic member. The upper end of the fixed shaft is fixedly connected to the lower surface of the moving plate 210. There is a gap between the periphery of the moving plate and the inner periphery of the sealed chamber housing that allows the moving plate to move. In this way, the flexible airtight elastic member is supported by the moving plate. When the upper sealed chamber is inflated, the flexible airtight elastic member deforms and elongates but does not form a bladder-like expansion, which is beneficial to the stable up and down movement of the laminate. In order to increase the firmness of the connection between the flexible airtight elastic member and the moving plate, an upper fixing plate 203 is provided. The flexible airtight elastic member is located between the upper fixing plate and the moving plate and is clamped and fixed by the two, so as to prevent the flexible airtight elastic member from disengaging from the moving plate under the action of the pressure difference. For example, the upper fixing plate and the moving plate are fastened by bolts.Preferably, the periphery of the upper fixing plate is shorter than that of the moving plate, so that the flexible airtight elastic component has a part that is not pressed by the upper fixing plate above the moving plate. In this way, the flexible airtight elastic component can be supported over a larger area and has sufficient elastic deformation space for vertical movement. It can also be that the flexible airtight component is annular, arranged around the periphery of the moving plate, its outer periphery is fixedly connected to the sealing chamber housing, and its inner periphery is fixedly connected to the outer periphery of the moving plate. The upper fixing plate can be annular and is fixedly pressed above the inner periphery of the flexible airtight component through fastening devices such as bolts, and together with the moving plate, clamps and fixes the flexible airtight component. Similarly, the outer periphery of the upper fixing plate can be located inside the outer periphery of the moving plate. Or the fixed part of the flexible airtight component has a certain distance from the outer periphery of the moving plate, so that the flexible airtight component has an extendable annular part.

[0012] During use, this laminate pressing and driving device can be arranged on the outer side of the top of the lamination working chamber, or can also be arranged inside the lamination working chamber, depending on the specific working conditions. Now, taking the laminate pressing and driving device arranged on the outer side of the upper box body as an example, the technical content of the present invention will be further described in detail.

[0013] The plate-pressing type photovoltaic module laminator of the structure of the embodiment of the present invention includes an upper box body, a lamination workbench, a laminate 501 and the laminate pressing and driving device 200 of the foregoing structure. The laminate is a rigid high-temperature resistant plate-like structure. The lamination workbench is supported by the lower box body. The laminate is horizontally arranged and located inside the upper box body. The lamination workbench is located below the laminate. The lamination workbench serves as a device for supporting the photovoltaic module 1, and together with the laminate, it acts on the photovoltaic module to apply pressure. Driven by the upper box lifting driving device (not shown in the figure), the upper box body can rise or fall, so as to adjust the distance between the laminate and the workbench, enabling the laminate pressing and driving device to perform lamination within a smaller stroke. This process is also called the opening and closing process of the photovoltaic module laminator. The laminate pressing and driving device is integrally located on the outer side of the top of the upper box and is supported and fixed by the top of the upper box. There is a through hole on the top of the upper box for the fixed shaft to pass through. A fixed sealing structure 301 is also arranged outside the top of the upper box body or outside the lamination working chamber for fixedly accommodating the sealing chamber housing. The fixed sealing structure is hermetically fixedly connected to the sealing chamber housing, forming a structure in which the lamination working chamber communicates with the inner cavity of the bellows and the inner cavity of the fixed sealing structure 301, so that the upper box body will not leak air at the through hole for the fixed shaft to pass through, making the seal of the upper box body firm and reliable. The laminate pressing and driving device 200 is used to drive the laminate to move towards or away from the lamination workbench, so that the laminate and the lamination workbench act on the photovoltaic module together to apply pressure or come into contact with the photovoltaic module without applying pressure.

[0014] The plate-pressing type photovoltaic module laminator of the present invention can be used for vacuum lamination, can also be used for non-vacuum lamination, can be used for vacuum or non-vacuum lamination curing, and can also be used for non-vacuum cooling and pressurization. When working in a vacuum state, the lamination working chamber composed of the upper box and the lamination workbench needs to be a sealed chamber that can be evacuated and inflated. When the lamination working chamber is a sealed chamber, a sealing component 302 is provided at the lower end of the upper box body, and is sealed through a second sealing chamber provided under the sealing component.

[0015] One laminating plate can be arranged in each laminating working chamber, and at least one laminating plate pressurizing driving device is correspondingly equipped for each laminating plate. Usually, in order to ensure the stable operation of the laminating plate, 4-8 laminating plate pressurizing driving devices are arranged. Such a design can reduce the driving force of each laminating plate pressurizing driving device, and can reduce the length, width and thickness of the flexible gas seal elastic component, and can improve the service life of the flexible gas seal elastic component. In addition, when a certain flexible gas seal elastic component is damaged, it can be replaced separately, reducing the difficulty of maintenance work and saving production costs.

[0016] The working process of the laminating machine and its laminating plate pressurizing and driving device of the present invention will be described below by taking vacuum lamination as an example: In the initial state, the upper box body is located at the open cover position, the upper sealing chamber is in a vacuum state, the lower sealing chamber is in an inflated state, and the optical component enters the designated position of the laminating workbench through the component transmission part 100. When laminating, the upper box body is driven to move downward, and its second sealing ring meets the laminating workbench to close the cover, forming a sealed laminating working cavity. After closing the cover, the upper and lower spaces of the laminating plate communicate with each other and are under the same air pressure. The laminating working cavity is evacuated to a certain vacuum degree, the upper sealing chamber starts to be inflated, and the lower sealing chamber starts to be evacuated to make the flexible air seal deform elastically downward. The moving plate and the fixed shaft drive the laminating plate to move downward together, so that the laminating plate contacts the component to laminate it. At the same time, as the pressure in the vacuum chamber increases, the laminating pressure will increase until the process pressure is reached. After laminating, the laminating working cavity is inflated, the lower sealing chamber is inflated, and the upper sealing chamber is evacuated. The pressure above the flexible air seal decreases and the pressure below increases. When the pressure below is greater than the pressure above, its deformation amount decreases until it returns to the initial state. Stop evacuating the upper sealing chamber and inflating the lower sealing chamber, open the cover, and transmit the component out of the laminating working cavity. For the photovoltaic module laminator with the structure of the present invention, since the magnitude of the driving force of the laminating plate is determined by the inflation pressure in the upper sealing chamber and the vacuum degree in the lower sealing chamber, continuous pressurization and decompression can be applied to the laminating plate. Moreover, more than two laminating plate pressurizing and driving devices can be set for one laminating plate. Therefore, high laminating pressure can be provided, and the increase in the laminating pressure is continuous, making the laminating uniformity of the component better, with less air residue, and better improving the problems of bubbles formed due to air residue and uneven laminating of the component. This structure is an independent laminating structure, and the independent laminating plate can laminate one or more components. During the entire laminating process, the elastic air seal is supported by the gas and is only affected by its own tension, so it is not easily damaged.

[0017] For the photovoltaic module laminator of the present invention, since mechanical devices such as cylinders or hydraulic cylinders are not provided, the height of its laminating plate pressurizing and driving device can be greatly reduced, which is beneficial for multi-layer photovoltaic module laminators.

[0018] The present invention provides a multi-layer photovoltaic module laminator, and the structure of the single-layer photovoltaic module laminator described above is adopted for each layer of the photovoltaic module laminator. Two adjacent single-layer photovoltaic module laminators (the single-layer photovoltaic module laminator is abbreviated as the photovoltaic module laminator) are arranged vertically. A support frame is provided at the top of the upper box body. The lower box of the upper and lower layer photovoltaic module laminators is supported by the support frame of the upper layer photovoltaic module laminator, and the upper box of each layer of photovoltaic module laminator is supported by the upper box body driving device.

[0019] A flexible gasket is preferably provided on the lower surface of the laminate. When laminating, the flexible gasket contacts the photovoltaic module, so that the impact between the rigid laminate and the photovoltaic module can be reduced, and the breakage of the photovoltaic module can be reduced or prevented.

[0020] The flexible high-temperature resistant elastic sealing member can be a thin sheet member made of one of an elastic airtight fabric, a high-airtightness bio-based aromatic polyester elastomer material, a thermoplastic elastomer with an airtight layer, a high-airtightness bio-based thiophene polyester elastomer material, or two or more of these materials.

Claims

1. A laminate pressing drive device for a photovoltaic module laminator, characterized in that: It includes a sealed chamber housing, in which a gas-sealing elastic component is arranged. The outer periphery of the gas-sealing elastic component is fixedly connected to the side part of the gas-sealing chamber housing, and divides the sealed chamber into a non-communicating upper sealed chamber and a lower sealed chamber. A bellows is arranged in the lower sealed chamber. One end of the bellows is fixedly and sealingly connected to the gas-sealing 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, one end of which is fixedly connected to the gas-sealing elastic component, and the other end is used for fixedly connecting to a laminate. Both the upper sealed chamber and the lower sealed chamber are provided with gas channels communicating with a vacuum device and an inflation device.

2. The laminate pressing drive device for a photovoltaic module laminator according to claim 1, characterized in that: The gas-sealing elastic component includes a flexible gas-sealing elastic component and a movable plate. The movable plate is located below the flexible gas-sealing elastic component and the two are fixedly connected. The flexible gas-sealing elastic component divides the sealed chamber into the upper sealed chamber and the lower sealed chamber that are not communicated with each other up and down and is fixedly connected to the sealed chamber housing. There is a gap between the movable plate and the sealed chamber housing that enables the movable plate to move inside the sealed chamber housing.

3. The laminating plate pressing drive device for a photovoltaic module laminator according to claim 2, characterized in that: The flexible gas-sealing elastic component is annular, and its inner periphery is fixedly connected to the periphery of the movable plate. The flexible gas-sealing elastic component is a silica gel plate.

4. The laminate pressing drive device for a photovoltaic module laminator according to claim 2 or 3, characterized in that: An upper fixing plate is arranged above the flexible gas-sealing elastic component. The upper fixing plate and the movable plate clamp and fix the flexible gas-sealing elastic component. The periphery of the upper fixing plate is located inside the periphery of the movable plate.

5. The laminate pressing drive device for a photovoltaic module laminator according to claim 1, characterized in that: The upper end and the lower end of the bellows are respectively fixedly and sealingly connected to the gas-sealing elastic component and the sealed chamber housing through bellows seats.

6. A plate-pressing type photovoltaic module laminator, the photovoltaic module laminator comprising a rigid laminate plate, the rigid laminate plate being located below the top of the upper box body and above the lamination workbench, and the laminate plate being driven by a laminate plate pressing drive device to move towards or away from the lamination workbench, characterized in that: Adopt the laminate pressing and driving device according to any one of claims 1-5, and the laminate is fixedly arranged at the other end of the fixed shaft.

7. The plate-pressing type photovoltaic module laminator according to claim 6, characterized in that: The laminate pressing and driving device is located above the top of the upper box body. The fixed shaft passes through a through hole provided in 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 through hole provided in the upper box body for the fixed shaft to pass through is sealed by an upper box sealing and fixing structure located between the lower part of the sealed chamber housing and the upper box body. The laminating workbench is a heating plate, and a heating device is arranged inside the heating plate.

8. The plate-pressing type photovoltaic module laminator according to claim 6, wherein: When the upper box body and the laminating workbench are closed, the upper box body forms a sealed laminating working cavity with the laminating workbench through a sealing component and a second sealing ring arranged below it.

9. The plate-pressing type photovoltaic module laminator according to claim 6, wherein: A flexible gasket is arranged on the lower surface of the laminate.

10. A plate-pressing type photovoltaic module laminator according to claim 1, characterized in that: The photovoltaic module laminator is a multi-layer photovoltaic module laminator, including at least two or more upper box bodies and laminating workbenches. The laminating workbench of the photovoltaic module laminator located above is supported by the upper box body of the photovoltaic module laminator located below.

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