Flexible driving photovoltaic module laminating machine

Abstract

The utility model provides a flexible driving photovoltaic module laminating machine, which aims at solving the technical problem that a laminating machine in the prior art is non-uniform in lamination of photovoltaic modules, and comprises an upper box, a laminating table and a rigid laminated board, the upper box is positioned above the laminating table, the upper box and the laminating table form a laminating cavity capable of being opened and closed, and the rigid laminated board is positioned above the laminating table. The laminated board is fixedly arranged in the upper box and is positioned above the laminating table, and the laminated board is fixedly connected with the output end of the laminated board pressure applying power device. Inflation and deflation of all the gas springs can be controlled in an overall mode or in a grouped mode, adjustment of gas pressure is easy to control, synchronism of all the gas springs is good, and pressure applying uniformity of the photovoltaic module is good.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic module lamination equipment technology, and in particular to a photovoltaic module laminator that uses rigid plate-shaped parts to laminate photovoltaic modules. Background Technology

[0002] Currently, with the increasing quality requirements and evolving specifications of photovoltaic modules, the demands on photovoltaic module laminators are rising. It has been recognized that sheet-type laminators, which use silicone sheets as laminating components and form sealed chambers above the silicone sheets, cannot meet the requirements for large-size modules. The market is shifting towards using laminates as the pressure-applying component. More and more companies are developing and producing sheet-type laminators that use rigid laminates as the pressure-applying component. For example, Chinese invention patent application CN202311088152.7, entitled "Laminator and Lamination Method of Laminator," discloses a sheet-type laminator, including a laminate and a laminator drive component. The drive component includes a housing and a piston rod, the housing forming a cavity; the piston rod includes a rod body. One end of the rod is fixedly connected to the laminate, and the other end is provided with a sealing part. The sealing part is located inside the cavity and divides the cavity into a first cavity and a second cavity. The first cavity and the second cavity are distributed along the height direction of the laminator. The laminator also includes a control system, which is used to adjust the pressure of the first cavity and the second cavity to drive the piston rod to move relative to the housing along the height direction of the laminator. The control system is connected to a pump body and an electro-hydraulic servo control valve. The pump body controls the pressure in the first cavity and the second cavity. In order to make the stroke of each driving component consistent, it is equipped with a position sensor to detect the position of the piston rod, and the controller controls the stroke of the piston rod. With the above structure, it is difficult for the control system to achieve synchronization of the piston rod control, and the piston rod has a guiding function. Therefore, when the laminate contacts the component, the contact time is difficult to be consistent, resulting in uneven pressure on the component. 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 flexible drive photovoltaic module laminator.

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

[0005] A flexible-drive photovoltaic module laminator includes an upper box, a laminating platform, and a rigid laminating plate. The upper box is located above the laminating platform, and the two together form a laminating chamber that can be opened and closed. The laminating plate is fixedly installed inside the upper box above the laminating platform. The laminating plate is fixedly connected to the output end of a laminating plate pressure power device. The laminating plate pressure power device includes a gas spring, a fixed plate, a connecting shaft, and an upper cover plate. The upper cover plate is fixedly installed on the upper box, and the gas spring is fixedly installed between the fixed plate and the upper cover plate. A support spring is installed below the fixed plate between the upper box and the fixed plate. One end of the connecting shaft is fixedly connected to the lower end face of the fixed plate, and the other end extends into the upper box through a through hole and is fixedly connected to the laminating plate. Under the tension of the support spring, the laminating plate is suspended in the upper box by the connecting shaft.

[0006] The connecting shaft is connected to the upper box through hole with a clearance fit, and the connecting shaft moves upward and downward without guidance.

[0007] The upper box is provided with a lower fixed frame sealing assembly at the lower end. When the upper box and the laminating table meet, the upper box, the lower fixed frame sealing assembly and the laminating table form a sealed vacuum lamination sealing cavity. The sealing cover is set outside the periphery of the through hole. Its lower end is fixedly and sealed to the upper box, and its upper end is fixedly and sealed to the upper cover plate to form the inner cavity of the sealing cover. The gas spring, the fixed plate, the connecting shaft and the support spring are all located inside the inner cavity of the sealing cover.

[0008] At least two laminates are provided in the upper box, and each laminate is provided with at least one set of laminate pressure power device;

[0009] Each laminate's pressure-applying power unit operates independently;

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

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

[0012] The laminator is a multi-layer laminator, comprising at least two single-layer laminators, with the laminating chambers of each single-layer laminator stacked vertically, and the upper chamber of the lower laminator supporting the lower chamber of the upper laminator.

[0013] The advantages and beneficial effects of this utility model are as follows:

[0014] The flexible drive photovoltaic module laminator with the structure of this utility model uses gas springs as the driving device to move the laminator. The inflation and deflation of each gas spring can be controlled as a whole or in groups. The gas pressure is easy to adjust and control. The synchronization of each gas spring is good, and the pressure applied to the photovoltaic module is uniform. Attached Figure Description

[0015] Figure 1This is a schematic diagram of an embodiment of the upper box structure of the laminator of this utility model;

[0016] Figure 2 for Figure 1 Top view diagram.

[0017] Figure 3 for Figure 2 A schematic diagram of the AA cross-sectional view.

[0018] Explanation of reference numerals in the attached figures

[0019] 1- Laminating table; 2- Drive unit; 203- Sealing ring A; 204- Sealing cover; 205- Sealing ring B; 206- Top cover plate; 207- Connecting shaft; 208- Gas spring; 209- Gas connector; 210- Fixing plate; 211- Support spring;

[0020] 3-Upper box; 301-Lower fixed frame sealing assembly; 302-Through hole

[0021] 4-Laminated board; 401-Felt fixing plate; 402-Felt pad;

[0022] 5-Components; 6-Transfer assembly; 7-Laminating cavity Detailed Implementation

[0023] 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.

[0024] like Figure 1-3As shown in the figure, the flexible-drive photovoltaic module laminator of this utility model includes an upper box 3, a lower box, a rigid laminating plate 4, and a laminating plate pressing power device. The lower box includes a laminating table 1, which is used to receive photovoltaic modules and, together with the laminating plate, squeeze the photovoltaic modules during lamination. Another function is that when the upper box descends and meets the lower box, the two form a lamination cavity 7. The laminating plate pressing power device is used to raise and lower the laminating plate so that the laminating plate and the laminating table move closer to or further away from the laminating table. The laminar plate pressurizing device includes a fixedly mounted upper cover plate 206, a gas spring 208, a connecting shaft 207, and a fixing plate 210. The gas spring is fixedly mounted below the cover plate and above the fixing plate. The connecting shaft is fixedly mounted below the fixing plate, and its lower end extends into the upper box through a through hole 302 provided on the upper box and is fixedly connected to the laminar plate. The gas spring is connected to an inflation and deflation device through its gas connector 209. The upper box and the connecting shaft can be a sealed sliding fit connection or a clearance fit movable connection. A support spring 211 is provided between the fixing plate and the top of the upper box, and both ends of the support spring are fixedly connected to the fixing plate and the upper box, respectively. In the non-laminated state, the laminar plate is supported by the support spring, and the upper box provides fixed support for the support spring. When gas is added to the gas spring, the gas spring expands upward and, after encountering the upper cover plate, continues to expand upward. When the expansion is blocked, it pushes the fixing plate downward, compressing the support spring and causing the laminar plate to move downward to perform lamination. Ideally, the connecting shaft and the upper box should be connected movably, with no guiding mechanism when the laminate moves downwards. This way, the laminate's direction is not limited to vertical downwards during its descent, but rather allows for a slight amount of swaying. When the laminate contacts the photovoltaic module, the contact is soft, minimizing impact on the photovoltaic module. Filling each gas spring or a group of gas springs with the same amount of gas, ensuring equal expansion heights, allows the laminate to maintain full contact with the photovoltaic module and apply the same pressure. The simplest way to maintain equal expansion of the gas springs is to use gas springs of the same specifications, equidistant from the horizontally positioned laminate, and with equal amounts of gas in each spring. Other methods are possible but more complex. The key is that as long as the laminate is initially horizontal, and the gas springs are inflated to pressurize the photovoltaic module, the expansion and deformation of the supporting springs remain equal. When the connecting shaft and the upper box are movably connected with a clearance fit, a sealing cover 204 is installed outside the laminating plate pressure device. This sealing cover is fixedly and sealed to the upper cover plate to form a sealed chamber. The bottom of the sealing cover surrounds the through hole at the top of the upper box through which the connecting shaft passes and is sealed to the top of the upper box. In this way, a communicating chamber is formed between the laminating chamber and the inner cavity of the sealing cover. The sealing cover is sealed to the top of the upper box by a sealing ring A203, and the sealing cover is sealed to the upper cover plate by a sealing ring B205.

[0025] During non-vacuum lamination: Initially, the upper chamber is open. The laminating plate 201, supported by the support springs, is horizontally suspended above the laminating table inside the lamination chamber by the connecting shaft 207. Component 5 enters the designated position on the laminating table 1 via the transfer unit 6. During lamination, the entire upper chamber is driven downwards to close with the laminating table, forming the lamination chamber 7. Each air spring 208 is inflated, expanding and compressing the support spring 211. The connecting shaft 207 drives the laminating plate 201 downwards, bringing it into contact with component 5 for lamination. Simultaneously, the lamination pressure increases as the air spring pressure rises. During inflation, each air spring expands synchronously, keeping the laminating plate horizontally downwards.

[0026] Multiple laminating plates can be installed within the lamination chamber, each laminating plate being equipped with a set of lamination drive devices. Each set of lamination drive devices has at least one lamination drive device, and multiple gas springs can share a single sealing cover. The gas springs of each set of laminating plate pressure power devices can be independently controlled or multiple sets can be linked and controlled uniformly.

[0027] When vacuum lamination is required, a lower fixing frame sealing assembly is fixedly installed below the upper chamber. When the upper chamber with the lower fixing frame sealing assembly is closed with the lamination table, a sealed vacuum lamination chamber is formed. During vacuum lamination, the vacuum lamination chamber must first be evacuated, and then the gas springs are inflated. After lamination is complete, the gas springs are deflated, causing them to contract, and the lamination plate is then reset under the action of the supporting springs. The laminator using this invention has a simple process for inflating and deflating the gas springs, and the amount of inflation and deflation is easy to control. Therefore, the pressure from the gas springs on all parts of the lamination plate can be uniform, thus improving the pressure uniformity on the modules. Furthermore, each lamination plate can be equipped with a set of lamination plate pressure applying power devices, allowing for individual control of different lamination plates and simultaneous lamination of photovoltaic modules with different lamination pressure requirements, improving equipment utilization. Furthermore, since the inner cavity of the sealing cover is connected to the vacuum lamination chamber, when the vacuum lamination chamber is evacuated, the inside of the sealing cover is also in a vacuum state. Therefore, the expansion speed of the gas spring can be increased, the lamination response speed of the lamination plate can be increased, which is beneficial to extending the overall lamination time and improving the lamination quality.

[0028] To prevent the rigid laminate from scratching the photovoltaic module, a flexible pad such as a felt pad is fixedly installed on the lower end face of the laminate. The felt pad is fixedly connected to the laminate through a felt fixing plate 402.

Claims

1. A flexible-drive photovoltaic module laminator, comprising an upper chamber, a laminating table, and a rigid laminating plate, wherein the upper chamber is located above the laminating table, and the two constitute an openable and closable laminating chamber; the laminating plate is fixedly disposed within the upper chamber above the laminating table; and the laminating plate is fixedly connected to the output end of a laminating plate pressurizing power device, characterized in that: The pressurizing power device for the laminate includes a gas spring, a fixed plate, a connecting shaft, and an upper cover plate. The upper cover plate is fixedly mounted on the upper box, and the gas spring is fixedly mounted between the fixed plate and the upper cover plate. A support spring is provided below the fixed plate between the upper box and the fixed plate. One end of the connecting shaft is fixedly connected to the lower end face of the fixed plate, and the other end extends into the upper box through a through hole and is fixedly connected to the laminate. Under the tension of the support spring, the laminate is suspended in the upper box by the connecting shaft.

2. The flexible driven photovoltaic module laminator as described in claim 1, characterized in that: The connecting shaft is connected to the upper box through hole with a clearance fit, and the connecting shaft moves upward and downward without guidance.

3. The flexible driven photovoltaic module laminator as described in claim 1, characterized in that: The upper box is provided with a lower fixed frame sealing assembly at its lower end. When the upper box and the laminating platform meet, the upper box, the lower fixed frame sealing assembly and the laminating platform form a sealed vacuum lamination sealing cavity. The sealing cover is set outside the periphery of the through hole. Its lower end is fixedly and sealed to the upper box, and its upper end is fixedly and sealed to the upper cover plate to form the inner cavity of the sealing cover. The gas spring, the fixed plate, the connecting shaft and the support spring are all located inside the inner cavity of the sealing cover.

4. A flexible-drive photovoltaic module laminator as described in claim 1 or 2, characterized in that: At least two laminates are provided inside the upper box, and each laminate is provided with at least one set of laminate pressure power devices.

5. The flexible driven photovoltaic module laminator as described in claim 4, characterized in that: Each laminate's pressure-applying power unit operates independently.

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

7. The flexible driven photovoltaic module laminator as described in claim 1, characterized in that: The laminating platform is a heating plate, and the heating plate has a built-in heating device.

8. The flexible driven photovoltaic module laminator as described in claim 1, characterized in that: The laminator is a multi-layer laminator, comprising at least two single-layer laminators, with the laminating chambers of each single-layer laminator stacked vertically, and the upper chamber of the lower laminator supporting the lower chamber of the upper laminator.

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