Solar cell module laminating machine driven by gas

Abstract

The utility model aims to provide a gas-driven solar cell module laminating machine, which aims at solving the technical problem that a laminating machine in the prior art is non-uniform in lamination of a photovoltaic module, and comprises an upper box, a lower box and a laminated board, the upper box comprises an upper box body, the lower box comprises a laminating workbench, and the laminated board is arranged on the laminating workbench. The upper box body is driven by the upper box lifting driving device to ascend and descend so as to be close to or far away from the laminating worktable, and the pneumatic laminating machine adopting the structure has the advantages that the uniformity of the stress on the surface of a laminated plate is good, and the condition that the point-shaped pressure is relatively large is avoided; the rigid laminated board driving device adopts a gas driving structure, is positioned on the inner side of the upper box body and is not provided with a mechanical driving device, so that the vertical space can be saved, and the technical problem that a single-layer laminating machine in a multi-layer laminating machine in the prior art occupies a large space due to a driving device can be solved.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic module lamination equipment technology, and in particular to a plate laminator with a rigid laminating plate as the pressure-applying component. Background Technology

[0002] Currently, photovoltaic module laminators are classified into sheet laminators and plate laminators based on the different pressure-applying components. Sheet laminators are widely used, but during sheet lamination, the force exerted by the silicone sheet on the edges of the photovoltaic module is greater than that on other parts, resulting in thinner edges for the photovoltaic module. In plate lamination, as photovoltaic module sizes increase, the required driving force also increases, leading to a greater number of driving devices for the laminator. Currently, hydraulic cylinders are commonly used as driving devices, making synchronization of these devices increasingly difficult. Furthermore, due to the increasing surface area of ​​the laminator, the pressure in the area directly driven by the driving device is greater than that in other parts, causing point-like lamination unevenness, which also fails to solve the technical problem of uneven lamination. Therefore, our organization has conducted technical research on laminators to solve this existing technical challenge in this field. Utility Model Content

[0003] The purpose of this invention is to address the technical problem of uneven lamination of photovoltaic modules in existing laminators by providing a gas-driven laminator.

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

[0005] A gas-driven solar cell module laminator includes an upper chamber, a lower chamber, and a laminator plate. The upper chamber includes an upper chamber body, and the lower chamber includes a lamination worktable. An upper chamber lifting drive device moves the upper chamber body up and down to move it closer to or away from the lamination worktable. The laminator plate is disposed within the upper chamber body, located between the top of the upper chamber and the lamination worktable. The laminator plate also includes a laminator plate driving device that drives the laminator plate up and down and applies extrusion pressure to the photovoltaic module, and a laminator plate fixing support device that fixes the laminator plate within the upper chamber body. The laminator plate driving device includes an elastic high-temperature resistant gas-tight seal located above the laminator plate. The elastic high-temperature resistant gas seal is fixedly installed above the laminate through its periphery. The laminate and the elastic high-temperature resistant gas seal form a sealing cavity. The sealing cavity has a channel communicating with the inflation device and the vacuum device. The laminate is installed in the upper box through the laminate fixing support device, and is supported by the laminate fixing support device and the upper box body. When the upper box body and the lower box are closed, when air is injected into the sealing cavity, the elastic high-temperature resistant gas seal expands and can meet the inner side of the top of the upper box. The top of the upper box exerts a reverse force on the laminate, causing the laminate to move down, so that it can meet the photovoltaic module and apply a compressive force to the photovoltaic module.

[0006] The laminate fixing support device includes a fixing component, an elastic support component, and a guide column. The fixing component is fixedly installed on the side wall of the upper box and / or the inner side of the top of the upper box. The guide column is vertically fixed on the fixing component through its bottom. At least one pair of oppositely arranged edges of the laminate are movably connected to the guide column. The laminate can move parallel up and down along the guide column. The elastic support component is located between the guide column and the laminate.

[0007] The fastener is arranged around the lower end of the side wall of the upper box and protrudes into the upper box. The lower end of the guide column is fixedly arranged on the inner convex surface of the fastener. A frame flange is fixedly arranged on the lower end face of the fastener. A sealing ring is arranged on the lower end face of the frame flange to realize that the upper box and the lamination workbench are closed to form a sealed lamination cavity.

[0008] One or more laminates are installed in the upper box. When two or more laminates are installed, each laminate is equipped with a laminate driving device and an elastic high-temperature resistant gas sealing element. The laminates are fixedly installed in the upper box by a laminate fixing support device. The elastic high-temperature resistant gas sealing element and the laminate form a sealing cavity. Each sealing cavity has a channel that communicates with the inflation device and the vacuum device.

[0009] Each laminate drive unit operates independently;

[0010] A cushioning pad is provided on the lower surface of the laminate;

[0011] The lamination worktable is a heating plate, and the heating plate has a built-in heating device;

[0012] The laminator is a multi-layer laminator, including at least two upper chambers, which are stacked one on top of the other. The upper chamber of the laminator located in the middle layer also serves as the lamination worktable of the laminator located in the adjacent upper layer.

[0013] The upper box body and the lamination workbench are closed to form a sealed lamination cavity, and the sealed cavity is equipped with a channel connected to a vacuum device and an inflation device.

[0014] The peripheral seal of the elastic high-temperature resistant gas seal is sandwiched between the upper pressure frame and the lower pressure frame.

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

[0016] The pneumatic laminator with the structure of this utility model uses a rigid laminar plate as the pressure-applying component. The driving device for applying pressure to the laminar plate is gas. The gas flows above the laminar plate, and the pressure applied to the laminar plate is uniform. Therefore, the surface of the laminar plate is subjected to good uniformity of pressure, and there will be no situation where there is a large point pressure.

[0017] In addition, the photovoltaic module laminator of this utility model adopts a gas-driven structure for its rigid laminator drive device. The laminator drive device is located inside the upper box and has no mechanical drive device, thus saving vertical space. This can solve the technical problem of large space occupation of the drive device in single-layer laminators in multi-layer laminators in the prior art. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the upper chamber of the laminator according to an embodiment of the present invention;

[0019] Figure 2 for Figure 1 Top view diagram.

[0020] Figure 3 for Figure 2 A schematic diagram of the AA cross-section, which omits the component transmission assembly;

[0021] Figure 4 To adopt Figure 1 The diagram shows a schematic representation of a multi-layer laminator with an upper box structure.

[0022] Figure 5 for Figure 4 A schematic diagram of the BB cross-section.

[0023] Figure 6 This is a schematic diagram of another embodiment of the upper chamber of the laminator, and it is a bottom view of the upper chamber.

[0024] Figure 7 for Figure 3 Enlarged view of M.

[0025] Explanation of reference numerals in the attached figures

[0026] 1-Photovoltaic module 2-Module transmission assembly

[0027] 100-Laminated sheet fixing support device; 101-Fixed component; 102-Elastic support component; 103-Guide column

[0028] 200-Laminated plate drive device; 201-Elastic high-temperature resistant gas seal; 202-Sealing cavity; 203-Upper pressure frame; 204-Lower pressure frame; 205-Sealing ring 1

[0029] 300 - Upper Box Body; 301 - Top of Upper Box; 302 - Side Wall of Upper Box; 303 - Lamination Chamber; 304 - Frame-type Sealing Flange; 305 - Sealing Ring II

[0030] 400-Lower Box 401-Laminating Workbench

[0031] 500 - Pressure Application Component; 501 - Laminate; 502 - Cushion Pad; 503 - Cushion Pad Fixing Plate 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 1-6 As shown, the gas-driven solar cell module laminator of this utility model embodiment is an improvement on the existing plate laminator. It includes an upper chamber, a lower chamber 400, a rigid laminator plate 501, a laminator plate fixing support device 100, and a laminator plate driving device 200. The upper chamber includes an upper chamber body 300, and the lower chamber includes a lamination worktable 401. The lamination worktable supports the photovoltaic module 1 during lamination and, together with the upper chamber body, forms a lamination cavity 303. The upper chamber body is driven to rise or fall by an upper chamber lifting drive device (not shown in the figure), thereby opening or closing the lamination cavity. The laminate 501, acting as a pressure-applying component, is positioned opposite the lamination worktable 401 and is fixed inside the upper housing via a laminate fixing support device. Its upper surface faces the inner side of the upper housing top 301, and its lower surface faces the lamination worktable. The laminate driving device 200 drives the laminate towards the lamination worktable or towards the top of the upper housing, thereby applying pressure to the assembly or detaching the laminate from the assembly. The laminate fixing support device includes a fixing member 101 fixedly mounted on the inner side wall 302 of the upper housing and an elastic support member 102. At least two opposite sides of the laminate are movably connected to the fixing member 101 via guide posts. An elastic support member is positioned between the laminate and the fixing member, surrounding a guide shaft. When the elastic support member is a spring, the spring is fitted outside the guide shaft. The guide posts are vertically positioned, and the laminate is horizontally positioned, allowing the laminate to move horizontally up and down along the guide posts. The laminate driving device includes an elastic high-temperature resistant gas-tight component 201, an upper pressure frame 203, and a lower pressure frame 204 for fixing the elastic high-temperature resistant gas-tight component above the upper surface of the laminate. The elastic high-temperature resistant gas-tight component is clamped and fixed between the upper and lower pressure frames. A sealing ring 205 is provided between the lower pressure frame and the upper surface of the laminate, thus forming a sealed cavity 202 with the elastic high-temperature resistant gas-tight component, the laminate, and the lower pressure frame. The sealed cavity 202 can be connected to an inflation device and an exhaust device installed outside the upper chamber through a sealed pipeline, so that the inflation device inflates the sealed cavity and the exhaust device releases the air from the sealed cavity. When the lamination cavity is in the closed state and the laminate is in the non-lamination position, the distance between the laminate and the lamination worktable is greater than or equal to the height of the photovoltaic module, and the stroke of the laminate on the guide column is greater than or equal to the distance between the lower surface of the laminate and the upper surface of the photovoltaic module. The fixing member 101 can also be fixedly installed inside the top of the upper chamber.

[0034] In the initial state, the laminate is supported and fixed in the upper box by the elastic support. The elastic support provides the laminate with a support force greater than its weight in order to support the laminate, the elastic high-temperature resistant gas seal, and the upper and lower pressure frames that fix the elastic high-temperature resistant gas seal. There is no gas in the sealing cavity, and the upper pressure frame is in a state with a gap with the top of the upper box or just in contact with the top of the upper box. During lamination, the photovoltaic modules are placed on the lamination worktable. The upper chamber lifting drive device drives the upper chamber to descend and meet the lamination worktable. The upper chamber and the lamination worktable form the lamination chamber. The inflation device inflates the sealed chamber with gas. When the sealed chamber is full of gas, the elastic high-temperature resistant gas seal begins to expand towards the top of the upper chamber. As the inflation volume increases, the elastic high-temperature resistant gas seal meets the top of the upper chamber. During further inflation, the upward expansion of the elastic high-temperature resistant gas seal is hindered. Under the reaction force from the top of the upper chamber, the lamination plate begins to descend along the guide column, and the elastic support is compressed. When the lamination plate meets the photovoltaic modules, it applies pressure to the photovoltaic modules. The pressure applied to the photovoltaic modules depends on the amount of gas injected into the sealed chamber and the gas pressure. After the first lamination or trial run is completed, a certain amount of gas can be left in the sealed chamber to reduce the amount and time of subsequent inflation and the amount and time of venting.

[0035] The laminator employing this novel structure utilizes a rigid laminating plate as its laminating component. The laminating plate driving device is a gas-sealed system within an elastic, high-temperature resistant gas seal. When the gas is introduced into the sealed cavity, it diffuses evenly, resulting in uniform pressure distribution across the entire effective laminating surface of the laminating plate. Therefore, it avoids point-like uneven stress and prevents the photovoltaic module from being thinner at the edges than other parts. Furthermore, the use of a gas-pressurization method makes pressure adjustment easier, allowing for continuous pressure control.

[0036] In this invention, during lamination production, it is best to first fill the sealing cavity with an appropriate amount of gas so that the top of the elastic high-temperature resistant gas seal is in contact with the top of the upper chamber. This saves inflation time, and because the elastic high-temperature resistant gas seal is already in contact with the top of the upper chamber, the gas pressure distributed within the sealing cavity is more uniform. When gas is further added to expand the elastic high-temperature resistant gas seal, the parallelism of the laminating plate downwards is better. It is also preferable to use multiple inflation holes to inflate the laminating plate upwards, as this provides better gas dispersion and promotes more uniform lamination pressure.

[0037] To withstand high lamination pressure and prevent the laminators from bending and deforming under high pressure, thereby further improving the quality of photovoltaic modules, two or more laminators can be installed in a single lamination chamber. Each laminator is secured with a flexible, high-temperature resistant gas-tight seal via upper and lower pressure frames. The laminators are fixedly connected to the top or side wall of the upper chamber via fasteners. This arrangement, with two or more laminators and a laminator drive device within a single lamination chamber, allows for the placement of only a small number of photovoltaic modules or even just one module under each laminator during photovoltaic module lamination. This significantly reduces the length and width of the laminators. The dimensions and elastic high-temperature resistant gas seals reduce the deformation of the laminate itself during lamination, making lamination quality easier to control. Furthermore, the inflation devices for each sealing cavity can be independently controlled, allowing for different gas pressures to be injected into each cavity. This enables the simultaneous lamination of photovoltaic modules of different specifications and / or process requirements, facilitating the batch production of photovoltaic modules with varying specifications and process requirements. Replacement of each elastic high-temperature resistant gas seal is more convenient and faster; it can be transported out via a replacement trolley, eliminating the need to replace a large single elastic high-temperature resistant gas seal, saving costs and reducing replacement difficulty. Using multiple small-sized laminates is also relatively cheaper than using a single large elastic high-temperature resistant gas seal, further reducing costs. The laminates can be arranged in a single row or multiple rows along the length of the upper housing, with equidistant or unequal spacing between rows. The laminate sizes can also be equal or unequal. The suction and inflation devices connecting each laminate and its high-temperature resistant elastic seal to the sealing cavity can be controlled as a whole or individually.

[0038] The lamination chamber can be sealed or unsealed, depending on whether the laminator uses vacuum lamination or non-vacuum lamination. When vacuum lamination is required, a sealing ring is installed between the upper chamber and the lamination worktable to ensure a seal after closure. The process for vacuum lamination is as follows: The upper chamber lifting drive lowers the upper chamber, closing the gap between it and the lamination worktable to form a sealed lamination chamber. This process is commonly referred to as closing the lid. After closing, the upper and lower spaces of the lamination plate are connected and under the same pressure. A vacuum is then drawn into the lamination chamber. Once the process vacuum level is reached, air is introduced into the sealed chamber, causing the elastic high-temperature resistant gas seal to expand upwards. When the elastic high-temperature resistant gas seal encounters the top of the upper chamber, the lamination plate descends under the reaction force of the top of the upper chamber, applying pressure to the photovoltaic modules upon contact. During this process, since the lower part of the elastic high-temperature resistant gas seal is a sealing cavity, and it is fixed by the upper and lower pressure frames, only the upper part of the elastic high-temperature resistant gas seal is a vacuum space. When the sealing cavity contains compressed gas, the elastic high-temperature resistant gas seal will expand upwards even without inflating the sealing cavity, thus saving lamination time. Preferably, the fixing member is arranged around the lower end of the side wall of the upper box and protrudes into the upper box. The lower end of the guide column is fixedly set on the inner convex surface of the fixing member. A frame flange is fixedly set on the lower end face of the fixing member, and a sealing ring is set on the lower end face of the frame flange. In this way, after the upper box and the lamination worktable are closed, a sealed lamination cavity is formed.

[0039] The gas-driven solar cell module laminator employing the structure of this invention features an elastic, high-temperature resistant gas-sealing component, upper frame, and lower frame, all located within the lamination chamber as the laminator's driving device. The chamber is filled with compressed gas, resulting in a relatively small height and minimal vertical space occupation within the laminator, making it particularly suitable for multi-layer laminators. Figure 4 and Figure 5 As shown, the upper chamber of the lower laminator can also serve as the lower chamber of the upper laminator. The lamination worktable is located on top of the upper chamber of the lower laminator. In this way, the heat from the lamination worktable can simultaneously heat the gas in the sealed cavity, giving the gas in the sealed cavity a certain temperature and reducing the heating time of the entire lamination cavity.

[0040] High-temperature resistant elastic gas-tight seals typically use silicone sheets, but other elastic, high-temperature resistant gas-tight materials such as cloth or sheets can also be used. Ideally, a buffer pad should be placed on the underside of the laminate to cushion the contact between the laminate and the photovoltaic module, avoiding the adverse effects of direct contact between the rigid laminate and the photovoltaic module. The buffer pad can be made of felt or silicone. The buffer pad is fixed to the underside of the laminate by buffer pad fixing plates located around the perimeter of the laminate.

[0041] When the laminator is used for lamination and curing, the lamination worktable is a heating plate with a built-in heating device.

[0042] High-temperature resistant elastic sealing components can be planar structures 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 gas-driven solar cell module laminator, comprising an upper chamber, a lower chamber, and a laminating plate, wherein the upper chamber includes an upper chamber body, and the lower chamber includes a laminating worktable, and the upper chamber body is raised or lowered by an upper chamber lifting drive device to move closer to or further away from the laminating worktable, characterized in that: The laminate is disposed inside the upper chamber, between the top of the upper chamber and the lamination worktable. It also includes a laminate driving device that drives the laminate to rise and fall and applies pressure to the photovoltaic modules, and a laminate fixing support device that fixes the laminate inside the upper chamber. The laminate driving device includes an elastic high-temperature resistant gas seal located above the laminate. The elastic high-temperature resistant gas seal is fixed above the laminate through its periphery, forming a sealed cavity between the laminate and the elastic high-temperature resistant gas seal. The sealed cavity has a channel communicating with an inflation device and a vacuum device. The laminate is movable up and down inside the upper chamber via the laminate fixing support device and is supported by the laminate fixing support device and the upper chamber. When the upper and lower chambers are closed, and air is injected into the sealed cavity, the elastic high-temperature resistant gas seal expands and meets the inner side of the top of the upper chamber. The top of the upper chamber exerts a reverse force on the laminate, causing it to move downwards, thus meeting the photovoltaic modules and applying pressure to them.

2. The gas-driven solar cell module laminator as described in claim 1, characterized in that: The laminate fixing support device includes a fixing component, an elastic support component, and a guide column. The fixing component is fixedly installed on the inner side wall of the upper box and / or the top of the upper box. The guide column is vertically fixed on the fixing component through its bottom. At least one pair of oppositely arranged edges of the laminate are movably connected to the guide column. The laminate can move parallel up and down along the guide column. The elastic support component is located between the guide column and the laminate.

3. The gas-driven solar cell module laminator as described in claim 2, characterized in that: The fastener is arranged around the lower end of the side wall of the upper box and protrudes into the upper box. The lower end of the guide column is fixedly arranged on the inner convex surface of the fastener. A frame flange is fixedly arranged on the lower end face of the fastener, and a sealing ring is arranged on the lower end face of the frame flange to realize that the upper box and the lamination workbench are closed to form a sealed lamination cavity.

4. A gas-driven solar cell module laminator as described in claim 1 or 2, characterized in that: One or more laminates are installed inside the upper box. When two or more laminates are installed, each laminate is equipped with a laminate driving device and an elastic high-temperature resistant gas sealing element. The laminates are fixedly installed inside the upper box by a laminate fixing support device. The elastic high-temperature resistant gas sealing element and the laminate form a sealing cavity. Each sealing cavity has a channel that communicates with the inflation device and the vacuum device.

5. The gas-driven solar cell module laminator as described in claim 4, characterized in that: Each laminate drive unit operates independently.

6. The gas-driven solar cell module laminator as described in claim 1, characterized in that: A cushioning pad is provided on the lower surface of the laminate.

7. The gas-driven solar cell module laminator as described in claim 1, characterized in that: The lamination worktable is a heating plate, and the heating plate has a built-in heating device.

8. The gas-driven solar cell module laminator as described in claim 1, characterized in that: The laminator is a multi-layer laminator, comprising at least two upper chambers stacked one on top of the other. The upper chamber of the laminator located in the middle layer also serves as the lamination worktable of the laminator located in the adjacent upper layer.

9. A gas-driven solar cell module laminator as described in claim 1, characterized in that: The upper box body and the lamination workbench are closed to form a sealed lamination cavity, and the sealed cavity is equipped with a channel connected to the vacuum device and the gas filling device.

10. A gas-driven solar cell module laminator as described in claim 1, characterized in that: The peripheral seal of the elastic high-temperature resistant gas seal is sandwiched between the upper pressure frame and the lower pressure frame.

Images