Pre-vacuum type solar cell module laminating machine

Abstract

The utility model aims to provide a forevacuum type solar cell module laminating machine, which aims at solving the technical problems that a photovoltaic module laminating machine in the prior art is long in evacuation time and low in production efficiency, and comprises an upper box, a lower box and an upper box jacking subassembly, the upper box comprises an upper box body, and the lower box comprises a lower box body; the upper box comprises an upper heating plate, the lower box comprises a lower heating plate, the upper box jacking subassembly is connected with the upper box body and drives the upper box body and the lower heating plate to meet or be far away from each other, and the forevacuum type solar cell module laminating machine and the photovoltaic module laminating machine are multi-layer. It can be ensured that the emptying efficiency of the main vacuum cavity is not lost. Besides, by adopting the laminating machine with the structure, the space occupied by a mechanical power device can be fully utilized, and the height between two adjacent laminating machines is not increased.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic module lamination technology, and in particular to photovoltaic module lamination equipment and lamination method. Background Technology

[0002] A solar cell module laminator, also known as a photovoltaic module laminator, is a device used to laminate solar cell modules (photovoltaic modules). With the continuous development of the photovoltaic industry, it is constantly evolving. Currently, photovoltaic modules are developing towards larger sizes, and to maintain production capacity, the specifications of photovoltaic module laminators are also continuously expanding. A photovoltaic module laminator consists of an upper chamber and a lower chamber. When the upper and lower chambers are closed, they form a sealed lamination chamber. During lamination, the lamination chamber needs to be evacuated to provide a vacuum environment for the photovoltaic modules and to remove air bubbles from within the modules. As the size of photovoltaic modules continues to increase, the volume of the photovoltaic module lamination chamber also increases, and the power requirements for the vacuum equipment during evacuation become increasingly higher. Currently, domestic laminators commonly use a 2X-70 type rotary vane oil pump as the vacuum pump, with an evacuation rate of 70L / S. It takes 40-60 seconds to reduce the vacuum pressure in the lamination chamber to the required pressure. As the volume of the lamination chamber continues to increase, the evacuation time will also increase, thus increasing the lamination time. Utility Model Content

[0003] The purpose of this invention is to address the technical problem of long evacuation time in existing photovoltaic module laminators, which reduces production efficiency, by providing a pre-vacuum solar cell module laminator.

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

[0005] A pre-vacuum solar cell module laminator includes an upper box, a lower box, and an upper box lifting assembly. The upper box includes an upper box body, and the lower box includes a lower heating plate. The upper box lifting assembly is connected to the upper box body and drives the upper box body and the lower heating plate to meet or move away. When they meet and close, the upper box body and the lower heating plate form a sealed main vacuum chamber. When they move away, space is made for the module to enter above the lower heating plate and below the upper box body. The laminator also includes a pre-vacuum chamber. The main vacuum chamber and the pre-vacuum chamber are connected by a filling and venting channel. A control valve is installed on the filling and venting channel. Both the main vacuum chamber and the pre-vacuum chamber are equipped with a vacuum degree detection device. When the main vacuum chamber is vented, the control valve opens. When the vacuum degree between the main vacuum chamber and the pre-vacuum chamber reaches equilibrium, the control valve closes. When the upper box body leaves the lower heating plate, the pre-vacuum chamber is evacuated. After the set vacuum degree is reached, the vacuum device stops evacuating the pre-vacuum chamber.

[0006] The pre-vacuum chamber is located above the top of the upper chamber.

[0007] The control device is connected with the input end of the vacuum degree detecting device, and the control valve is connected with the output end of the control device. The control device controls the opening and closing of the control valve according to the process flow of the laminating machine and the pressure in the pre-vacuum cavity. When the main vacuum cavity is exhausted, the control device controls the control valve to open, so that the main vacuum cavity and the pre-vacuum cavity are communicated. When the vacuum degree detecting device detects that the pressure in the main vacuum cavity and the pre-vacuum cavity reaches balance, the control device controls the control valve to close, so that the communication between the main vacuum cavity and the pre-vacuum cavity is cut off. When the main vacuum cavity starts to be vacuumized, the control device controls the control valve to open, so that the main vacuum cavity and the pre-vacuum cavity are communicated.

[0008] The volume of the pre-vacuum cavity is 1.5-4 times of the volume of the main vacuum cavity.

[0009] The laminating device of the laminating machine is a rigid laminating plate. The laminating plate is located above the lower heating plate and below the upper box body in the main vacuum cavity. The laminating plate is fixed and supported by the mechanical power device of the laminating plate driving device. At least one mechanical power device is arranged at a position corresponding to each end or each side of the laminating plate. The mechanical power device is located above the top of the upper box body. The output end of the mechanical power device of the laminating plate driving device is connected with the side of the laminating plate. The pre-vacuum cavity is located inside the area where the mechanical power device is located. There is at least one pre-vacuum cavity.

[0010] The laminating plate driving device includes the laminating plate laminating driving device and the laminating plate adjusting device as the mechanical power device. The main body of the laminating plate adjusting device is fixedly connected with the upper box body. The laminating plate adjusting device is used for adjusting the distance between the laminating plate and the lower heating plate. The laminating plate adjusting device exerts force on the edge of the photovoltaic module to offset the edge deformation of the photovoltaic module caused by heating during the laminating process. The output end of the laminating plate laminating driving device is fixedly connected with the laminating plate and is used for exerting laminating pressure on the photovoltaic module.

[0011] The gravity of the laminating plate is equal to the pressure exerted on the photovoltaic module. The gravity of the laminating plate is used to exert pressure on the photovoltaic module to remove the gas in the photovoltaic module during the laminating process.

[0012] Two or more laminating plates are arranged in the upper box body. Each laminating plate has independent laminating plate adjusting device and laminating plate laminating driving device. Each laminating plate has a plurality of laminating plate adjusting devices arranged along the long side of the laminating plate. The laminating plate adjusting device includes a pneumatic cylinder or an electric cylinder. The output end of the pneumatic cylinder or the electric cylinder is fixedly connected with the laminating plate. The cylinder body of the pneumatic cylinder or the electric cylinder is fixedly arranged on the outside of the top of the upper box body. The gap between the output end of the laminating plate adjusting device and the top of the upper box body is sealed by a sealing device. The sealing device includes a bellows. The upper end of the bellows is fixedly and sealingly connected with the output end of the pneumatic cylinder or the electric cylinder. The lower end of the bellows is fixedly and sealingly connected with the top of the upper box body through a bellows seat.

[0013] The laminated plate lamination driving device is a gas-driven device. The gas-driven device moves the laminated plate down or up by inflating and deflating it, and adjusts the applied pressure by adjusting the amount of gas inflated. The gas-driven device includes a plate-shaped high-temperature resistant elastic gas seal. The plate-shaped high-temperature resistant elastic gas seal is fixedly installed above the laminated plate by a sealing assembly. The laminated plate, the plate-shaped high-temperature resistant elastic gas seal, and the sealing assembly constitute a laminated sealing cavity. The laminated sealing cavity is provided with inflation and deflation channels. When gas is inflated into the laminated sealing cavity, the plate-shaped high-temperature resistant elastic gas seal expands upward and meets the inner side of the top of the upper box body, driving the laminated plate to move down and apply pressure to the photovoltaic module. The lamination pressure is adjusted by adjusting the amount of gas in the laminated sealing cavity. A heating element is fixedly installed above the laminated plate on the inner side of the laminated sealing cavity.

[0014] The pre-vacuum solar cell module laminator is multi-layered, with each layer including the aforementioned laminator. The lower heating plate of the upper laminator is located above and fixedly connected to the upper box of the lower laminator. The conveyor belt of the module transport unit surrounds the lower heating plate of the upper laminator and the upper box of the lower laminator.

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

[0016] The pre-vacuum solar cell module laminator with the structure of this utility model has the pre-vacuum device and the vacuum pump simultaneously venting the main vacuum chamber during vacuuming, which improves the gas removal efficiency of the main vacuum chamber and reduces the lamination process time. Furthermore, since the pressure in the pre-vacuum chamber is already lower than the pressure in the main vacuum chamber before it is connected to the main vacuum chamber, and the connection between the two is interrupted when the pressures between them reach equilibrium, the venting efficiency of the main vacuum chamber can be ensured without loss.

[0017] In addition, since the pre-vacuum chamber of the laminator using the structure of this utility model is located above the top of the upper chamber, it will not occupy additional production space and save space resources. This structure is particularly advantageous for multi-layer laminators, as it can make full use of the space occupied by the mechanical power unit without increasing the height between two adjacent laminators. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the photovoltaic module laminator of this utility model;

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

[0020] Figure 3 for Figure 2 A schematic diagram of the AA cross-sectional view;

[0021] Figure 4 for Figure 2B-B sectional view of the figure.

[0022] Explanation of reference signs

[0023] 1 - upper box top lifting part; 2 - assembly conveying part 4 - assembly

[0024] 100 - laminated board laminating driving device 101 - plate-shaped high-temperature-resistant elastic air seal 102 - lower pressing frame 103 - sealing strip 104 - upper pressing frame 105 - laminated sealing cavity

[0025] 200 - laminated board adjusting device; 206 - bellows seat; 207 - air cylinder / electric cylinder 208 - lifting plate 209 - guide connecting shaft 210 - bellows 211 - laminated board 212 - felt pad

[0026] 300 - upper box 301 - main vacuum cavity 302 - heating sheet 303 - heating sheet fixing plate 304 - pressing frame 306 - elastic sealing strip 306 - upper box body

[0027] 400 - lower box 401 - lower heating plate

[0028] 501 - pre-vacuum cavity 502 - gas filling and discharging channel DETAILED DESCRIPTION

[0029] The utility model will be further described in detail through specific embodiments below, the following embodiments are only descriptive, not restrictive, and cannot limit the protection scope of the utility model.

[0030] As Figures 1-4As shown, the laminating machine main body of the embodiment structure comprises a laminating device, an upper box 300 and a lower box 400. The upper box comprises an upper box body 306, and the lower box comprises a lower heating plate 401. The upper box body and the lower heating plate can meet and close to form a sealed cavity under the drive of the upper box jacking device, and constitute a main vacuum cavity 301. The upper box body and the lower heating plate can also move away under the drive of the upper box jacking device, and leave space for the transmission of the photovoltaic module. The laminating machine further comprises a pre-vacuum cavity 501. The main vacuum cavity is used for accommodating the photovoltaic module during laminating, and provides a sealed environment for the photovoltaic module. The pre-vacuum cavity is evacuated to a vacuum state before laminating the photovoltaic module, and obtains a preset vacuum degree, thereby providing another channel for the exhaust of the main vacuum cavity 301. The pre-vacuum cavity and the main vacuum cavity are communicated through a gas charging and discharging channel, and a control valve is arranged on the gas charging and discharging channel to control the on-off state between the pre-vacuum cavity and the main vacuum cavity. The volume of the pre-vacuum cavity is preferably greater than 1 times, and more preferably 2-4 times of the volume of the main vacuum cavity, so that the exhaust efficiency of the main vacuum cavity is appropriately improved without significantly increasing the overall volume of the laminating machine. The main vacuum cavity is communicated with a vacuum device, and the pre-vacuum cavity and the vacuum device for evacuating the main vacuum cavity are arranged in parallel when the main vacuum cavity is evacuated. The pre-vacuum cavity is one of the exhaust devices of the main vacuum cavity, and the two simultaneously exhaust the main vacuum cavity. The pre-vacuum cavity is evacuated before laminating, and the control valve between the two is closed before the pre-vacuum cavity is evacuated, so that the two are not communicated. The vacuum degree in the pre-vacuum cavity is higher than the process vacuum degree of the main vacuum cavity. When the main vacuum cavity is evacuated, the control valve between the two is opened to communicate the two, and the vacuum device is used to evacuate the main vacuum cavity. Since the vacuum device for evacuating the main vacuum cavity and the pre-vacuum cavity are arranged in parallel, when the main vacuum cavity is evacuated, part of the gas in the main vacuum cavity is evacuated by the vacuum device, and part of the gas diffuses into the pre-vacuum cavity. In addition, the volume of the pre-vacuum cavity is more than 1 times of the volume of the main vacuum cavity. After the two are communicated, since the vacuum degree in the pre-vacuum cavity is lower than the vacuum degree in the main vacuum cavity, the gas in the main vacuum cavity naturally diffuses into the pre-vacuum cavity and exists in the pre-vacuum cavity until the vacuum degrees of the two reach equilibrium. The speed of removing the gas in the main vacuum cavity is obviously improved, especially when the volume of the pre-vacuum cavity is more than 2 times of the volume of the main vacuum cavity. Since the space at the end of the pre-vacuum cavity is large and the gas pressure is lower than that of the main vacuum cavity, the gas quickly diffuses into the pre-vacuum cavity, and the vacuum degree of the main vacuum cavity is reduced by more than half in a very short time. Therefore, the main vacuum cavity can reach the required vacuum degree faster. When the vacuum degrees in the main vacuum cavity and the pre-vacuum cavity reach a relative balance, the control valve between the two is closed, and the pre-vacuum cavity is evacuated before the main vacuum cavity is evacuated next time. When the main vacuum cavity is evacuated next time, the control valve between the two is opened, and the operation is repeated. The main vacuum cavity can reach a certain vacuum degree in advance when being evacuated.

[0031] Pre-vacuum cavity 301 is preferably fixedly arranged above the top of the upper box body. A plurality of communication channels can be arranged between the two to improve the speed of gas diffusion from the main vacuum cavity to the pre-vacuum cavity. A control valve is arranged on each communication channel to control the on-off state of the two. A single channel can also be arranged. When a single channel is used, the single channel needs to have a large enough cross-sectional area to ensure that the gas in the main vacuum cavity disperses into the pre-vacuum cavity at a predetermined speed. The main vacuum cavity and the pre-vacuum cavity are each provided with a vacuum gauge to detect the vacuum degree. The vacuum gauges are connected to the input end of the control system, and the control valves are connected to the output end of the control system. The vacuum gauges feed back the detected vacuum degree to the control system, which controls the opening and closing of the control valves according to the vacuum degrees of the two and the settings of the vacuuming process. When the main vacuum cavity is being vacuumed, the control valve between the two is open. When the vacuum degrees of the two reach a stable state, the control valve between the two is closed. The pre-vacuum cavity is vacuumed after the control valve between the two is closed and before the control valve between the two is opened. The main structure of the laminator of the present application can adopt any structure of the prior art.

[0032] The working process of the laminator of the present application is as follows: Before lamination, the control valve between the main vacuum cavity and the pre-vacuum cavity is kept closed, and the control valve between the pre-vacuum cavity and the vacuuming device is opened. The pre-vacuum cavity is vacuumed by the vacuuming device, and the control valve between the vacuuming device and the pre-vacuum cavity is closed after the pre-vacuum cavity reaches a predetermined vacuum degree. After the upper box and the lower box are closed under the action of the upper box lifting part, the control valve between the main vacuum cavity and the pre-vacuum cavity is opened to connect the two, and the main vacuum cavity is connected to the vacuuming device. The main vacuum cavity is simultaneously exhausted by the pre-vacuum cavity and the vacuuming device. Since the pre-vacuum cavity has reached a vacuum state in advance, the gas in the main vacuum cavity diffuses to the pre-vacuum cavity at the same time and is exhausted by the vacuuming device, thereby improving the efficiency of vacuuming. When the vacuum pressures in the main vacuum cavity and the pre-vacuum cavity reach a stable state, the control valve between the main vacuum cavity and the pre-vacuum cavity is closed. The main vacuum cavity continues to be vacuumed until it reaches a predetermined vacuum degree.

[0033] The main body of the laminator preferably has the following structure: the laminating device adopts a rigid laminating plate, further comprising a laminating plate driving device connected with the laminating plate to provide support for the laminating plate, drive the laminating plate to rise and fall, and apply force to the laminating plate to generate extrusion pressure between the laminating plate and the lower heating plate to press the photovoltaic module located between the lower heating plate and the laminating plate. The mechanical power device of the laminating plate driving device, such as a pneumatic cylinder or an electric cylinder, is two or more, and is arranged above the top of the upper box body and corresponds to the positions of the opposite ends of the laminating plate or the four peripheral positions of the laminating plate. The output end of the mechanical power device is fixedly connected with the edge of the laminating plate, and the pre-vacuum cavity is located in the space surrounded by the mechanical power device of the laminating plate driving device. The pre-vacuum cavity can be one or two or more. In this way, the pre-vacuum cavity does not occupy extra external space of the area where the laminator is located, which is particularly advantageous for multi-layer laminators. More specifically, the laminating plate driving device comprises a laminating plate laminating driving device 100 and a laminating plate adjusting device 200. A sealing assembly one composed of a pressing frame 304 and an elastic sealing strip 306 is fixedly arranged at the lower end of the upper box body. When the upper box and the lower box are closed and covered, the upper box and the lower box form a main vacuum cavity 301 through the sealing assembly. The laminating plate 211 is arranged below the upper box body and above the lower heating plate 401. The lower surface of the laminating plate is arranged opposite to the lower heating plate, and at least two opposite edges of the upper surface of the laminating plate are fixedly connected with the output ends of a plurality of laminating plate adjusting devices 200. The laminating plate adjusting device is located outside the top of the upper box body, so that the laminating plate adjusting device can output force to the edge of the laminating plate and fix the laminating plate in the upper box body at the same time. A plurality of laminating plate adjusting devices are arranged along at least the long edge of the laminating plate. The laminating plate adjusting device is the mechanical power of the laminating plate driving device mentioned above, which supports and fixes the laminating plate. The laminating plate laminating driving device 100 is a driving device for the laminating plate and the lower heating plate to apply extrusion pressure to the photovoltaic module. This extrusion pressure is the laminating pressure of the photovoltaic module. In the present application, the laminating plate laminating driving device can be a mechanical driving device, preferably a pneumatic driving device. The pneumatic driving device drives the laminating plate to move down or up by inflating or deflating and adjusts the pressure by adjusting the amount of inflation.The utility model discloses a laminated board laminating driving device adopts the following structure, including board high temperature resistance elastic air seal 101, board high temperature resistance elastic air seal is located above laminated board and is sealed with the upper side of laminated board through the sealing assembly two of upper pressure frame 102, lower pressure frame 104 and sealing strip 103, and the periphery of board high temperature resistance elastic air seal is fixedly clamped between upper pressure frame and lower pressure frame, so that board high temperature resistance elastic air seal and laminated board constitute a sealed laminated sealing cavity 105, and board high temperature resistance elastic air seal has certain gap or contact with the inner side of the top of upper box body, when filling gas into laminated sealing cavity, board high temperature resistance elastic air seal can produce mutual force with the top of upper box body and make laminated board move down, when exhausting laminated sealing cavity, the force between board high temperature resistance elastic air seal and the top of upper box body weakens or loses force, and laminated board moves up, and the pressure on photovoltaic module is adjusted by adjusting the amount of filling gas into laminated sealing cavity. When filling gas into laminated sealing cavity, laminated board adjusting device does not provide support force to laminated board. In the utility model, the preferred laminated board adjusting device includes air cylinder / electric cylinder 207, lifting plate 208, guide connecting shaft 209 and sealing device, and the lower end of guide connecting shaft is fixedly connected with the upper surface of laminated board, and the output end of air cylinder / electric cylinder is fixedly connected with the upper end of guide connecting shaft, so as to adjust the up-down position of laminated board through the extension and retraction stroke of the output end of air cylinder / electric cylinder, and the gap between guide connecting shaft and the top of upper box body is sealed through sealing device. Preferably, the sealing device includes bellows 210 and bellows seat 206, the bellows is sleeved on the outer side of guide connecting shaft, is sealed through lifting plate 208 at the top, and the lower end is located above bellows seat 206, and is fixedly connected with upper box body through bellows seat. Preferably, one laminated board adjusting device includes two electric cylinders / air cylinders, and the two electric cylinders / air cylinders are arranged on the two sides of guide connecting shaft and are connected with lifting plate, so as to facilitate the stability of the up-down movement of laminated board. In addition, since laminated board has little or no deformation, the uniformity of the pressure on photovoltaic module is good, and the overflow of glue can be prevented, so that the overflow of glue is more uniform, and since the overflow of glue is uniform, the position of the battery module of the same batch is basically consistent, so that pollution to the battery module can be prevented.

[0034] The pre-vacuum cavity is located between the spaces surrounded by the laminated board adjusting devices, and covers almost the entire top space of the upper box body, so that the overall height of the pre-vacuum cavity can be effectively reduced, the laminating machine of the utility model adopts a multi-layer structure, and no space position outside the laminating machine is occupied. At the same time, since the pre-vacuum cavity is located at the top of the upper box body and is always in a vacuum state or a state of very few gases, the heat dissipation of the top of the upper box body can be reduced, and the heat preservation effect of the entire upper box is improved. The height of the pre-vacuum cavity is preferably consistent with the overall height of the laminated board adjusting device, so that the space can be more intensive and more fully utilized. The laminating machine with the utility model structure can shorten the exhaust time of the main vacuum cavity and improve the entire production efficiency.

[0035] In operation, the lifting plate 208 is lifted by the cylinder / electric cylinder to drive the guiding connecting shaft 209 to lift the laminated plate 205, so that the laminated plate is in the lifting state, the assembly 4 is transmitted to the designated position below the laminated plate through the assembly transmission part 2, the upper box is driven to move downward by the upper box lifting part to make the upper box and the lower box close, the main vacuum cavity 301 is formed between the lower heating plate and the upper box body, after the main vacuum cavity is evacuated to the predetermined vacuum degree, the laminated plate adjusting device gradually loses the supporting force to the laminated plate, the laminated plate is lowered under the action of gravity and loses the supporting force completely when falling on the photovoltaic assembly, the laminated plate applies the gravity force to the photovoltaic assembly, the laminated plate has the predetermined gravity, the gravity is consistent with the pressure required by the photovoltaic assembly exhaust, and the gas in the photovoltaic assembly can be exhausted, since the supporting force of the laminated plate adjusting device to the laminated plate is gradually reduced until the laminated plate completely loses the supporting force after meeting the photovoltaic assembly, the laminated plate does not fall freely but falls gently, and therefore, the photovoltaic assembly is not impacted, the lower heating plate heats the photovoltaic assembly, after the exhaust is completed, the laminated plate adjusting device and the laminated plate laminating driving device apply the force to the laminated plate, in the process, the laminated plate adjusting device applies the force to the edge position of the laminated plate to overcome the deformation force generated due to the heating of the laminated plate, and the laminated plate laminating driving device applies the force to the photovoltaic assembly to apply the laminating force to the photovoltaic assembly, since the force overcoming the deformation of the laminated plate is applied by the laminated plate adjusting device during the laminating and curing process, the edge of the laminated plate does not warp and deform, since the laminated plate upper surface is subjected to the pressure of the gas, the laminating pressure is uniformly distributed, and after the laminating and curing are completed, since the laminated plate does not deform during the laminating and curing process, the laminated plate is not deformed and remains flat during the whole production process. The force of the laminated plate adjusting device is adjusted according to the laminating time, so that the force is equivalent to the edge warping force generated during the heating process, and therefore, the photovoltaic assembly is not subjected to additional pressure. In the utility model, the laminated plate is lifted by the laminated plate adjusting device to make room for feeding, the edge of the photovoltaic assembly is subjected to the pressure during the laminating, and the laminating distance is controlled, so that the overflow thickness of the assembly edge is adjusted. In the utility model, since the deformation of the edge of the laminated plate is controlled by the laminated plate adjusting device during the laminating, the laminated plate does not deform or has a small deformation amount during the laminating process, the glue overflow is uniform, and therefore, the non-uniformity of the glue overflow amount can be reduced.

[0036] Preferably, the heating sheet 302 is fixed on the upper surface of the laminated plate 211 by the heating sheet fixing device 303, and the heating sheet is usually an electric heating sheet. The heating sheet is preferably uniformly arranged on the surface of the laminated plate and directly contacts the laminated plate, so that the heating plate can be heated faster, the photovoltaic assembly can be heated more uniformly, the temperature can be raised faster, and the temperature uniformity is better.

[0037] The laminating machine can set multiple laminating plates in the upper box body, the multiple laminating plates are distributed in single row or multiple rows along the running direction of the photovoltaic module, the laminating plate adjusting device and the laminating plate laminating driving device are independently arranged on each laminating plate, the heating piece is arranged on each laminating plate, the laminating plate adjusting device, the laminating plate laminating driving device and the heating control device of the heating piece of each laminating plate can be connected with the control system respectively, and therefore the pressing pressure and the heating temperature of each laminating plate can be controlled individually, the photovoltaic modules of different specifications or processes can be simultaneously pressed, and the applicability of the laminating machine for the photovoltaic module is improved.

[0038] Generally, in order to reduce the impact force between the laminating plate and the photovoltaic module during laminating, the flexible gasket such as felt pad 212 is arranged on the lower surface of the laminating plate, so as to reduce the possibility of damaging the photovoltaic module.

[0039] The laminating machine can be single-layer or multi-layer (more than two layers). When it is a multi-layer laminating machine, two or more single-layer laminating machines are stacked, the lower heating plate of the lower layer is located above the upper box body, when the pre-vacuum cavity is located above the upper box body, the two constitute a whole, and the transmission belt of the component transmission part 2 surrounds the lower heating plate of the upper laminating machine and the upper box body of the lower laminating machine. The plate-shaped high-temperature-resistant elastic air-tight sealing piece is preferably a silica gel plate, a rubber plate or the like.

[0040] Now the laminator of the utility model simultaneously has heating sheet and pre-vacuum device as an example to illustrate the working process. Before laminating, the pre-vacuum cavity is first evacuated to reach the predetermined vacuum degree, the laminating plate adjusting device is in the jacking state, the photovoltaic module is driven by the transmission belt of the assembly transmission part to enter the specified position on the heating plate, the laminating plate adjusting device drives the laminating plate to descend, the upper box and the lower heating plate are sealed to form the main vacuum cavity through the sealing assembly, the control valve between the main vacuum cavity and the pre-vacuum cavity is opened to make the main vacuum cavity and the pre-vacuum cavity communicate, and the main vacuum cavity is evacuated through the vacuum device at the same time. The evacuation channel of the main vacuum cavity and the communication channel of the pre-vacuum cavity are in parallel, so part of the gas in the main vacuum cavity is evacuated by the vacuum device, and part of the gas enters the pre-vacuum cavity, so that the main vacuum cavity reaches the predetermined vacuum degree at a faster speed. When the predetermined vacuum degree is reached, the cylinder / electric cylinder of the laminating plate adjusting device is converted to the unpowered output state, so that the laminating plate moves downward under the action of gravity, but because the supporting force of the laminating plate adjusting device gradually decreases during the conversion from powered to unpowered, the laminating plate does not lose the supporting force at once, but gradually loses the supporting force, so that it meets the photovoltaic module at the preset speed and time, and the laminating plate performs pressure exhaust on the module 4 through the felt pad 206, and the electric heating sheet 302 arranged on the laminating plate 205 heats the laminating plate. After the exhaust stage is completed, the laminating plate adjusting device is converted to output downward pressure to the laminating plate, and the edge of the laminating plate is subjected to pressure resisting the deformation of the edge of the laminating plate. The laminating state of the edge of the module can be adjusted and improved by adjusting the pressure of the power source of the laminating plate adjusting device; the laminating sealing cavity 105 is inflated to provide laminating pressure to the module 4. After laminating, the control valve between the main vacuum cavity and the pre-vacuum cavity is closed, and the laminating sealing cavity is evacuated to lose the pressure on the laminating plate, the laminating plate adjusting device drives the laminating plate to move upward, the upper box is opened, the laminating is completed, and the pre-vacuum cavity is evacuated.

Claims

1. A pre-vacuum solar cell module laminator, comprising an upper box and a lower box and an upper box jacking assembly, the upper box comprising an upper box body, the lower box comprising a lower heating plate, the upper box jacking assembly being connected with the upper box body and driving the upper box body and the lower heating plate to meet or to be away from each other, when meeting, the upper box body and the lower heating plate constituting a sealed main vacuum cavity, when being away, leaving out space for a module to enter above the lower heating plate and below the upper box body, characterized in that, The pre-vacuum cavity is located above the top of the upper box body.

2. A pre-vacuum solar cell module laminator as claimed in claim 1, characterized in that: The control device is connected with the input end of the vacuum degree detection device, and the control valve is connected with the output end of the control device.

3. A pre-vacuum solar cell module laminator as claimed in claim 1, wherein: The volume of the pre-vacuum cavity is 1.5-4 times of the volume of the main vacuum cavity.

4. A pre-vacuum solar cell module laminator as claimed in claim 1, wherein: The laminating device of the laminating machine is a rigid laminating plate.

5. A pre-vacuum solar cell module laminator as claimed in claim 1, wherein: The laminating plate driving device includes a laminating plate laminating driving device and a laminating plate adjusting device as a mechanical power device.

6. A pre-vacuum solar cell module laminator as claimed in claim 5, characterized in that: The laminating plate driving device includes a laminating plate laminating driving device and a laminating plate adjusting device as a mechanical power device.

7. A pre-vacuum solar cell module laminator as claimed in claim 6, characterized in that: The laminating plate driving device includes a laminating plate laminating driving device and a laminating plate adjusting device as a mechanical power device.

8. A pre-vacuum solar cell module laminator as claimed in claim 6, wherein: The upper box body is provided with two or more than two laminated plates, each laminated plate has independent laminated plate adjusting device and laminated plate laminating driving device, each laminated plate has a plurality of laminated plate adjusting devices arranged along the long side of the laminated plate, the laminated plate adjusting device comprises a pneumatic cylinder or an electric cylinder, the output end of the pneumatic cylinder or the electric cylinder is fixedly connected with the laminated plate, the cylinder body of the pneumatic cylinder or the electric cylinder is fixedly arranged on the top outside of the upper box body, the gap between the output end of the laminated plate adjusting device and the top of the upper box body is sealed by a sealing device, and the sealing device comprises a bellows, the upper end of the bellows is sealingly and fixedly connected between the output end of the pneumatic cylinder or the electric cylinder, and the lower end is sealingly and fixedly connected with the top of the upper box body through a bellows seat.

9. A pre-vacuum solar cell module laminator as claimed in claim 6, wherein: The laminated plate laminating driving device is a gas driving device, which makes the laminated plate move down or up by inflating or deflating, and adjusts the applied pressure by adjusting the amount of inflation, the gas driving device comprises a plate-shaped high-temperature-resistant elastic air seal, which is fixedly arranged above the laminated plate through a sealing assembly one, the laminated plate, the plate-shaped high-temperature-resistant elastic air seal and the sealing assembly one constitute a laminated sealing cavity, the laminated sealing cavity is provided with an inflation and deflation channel, when the laminated sealing cavity is inflated, the plate-shaped high-temperature-resistant elastic air seal expands upward and meets the inner side of the top of the upper box body, then drives the laminated plate to move down and applies pressure to the photovoltaic module, the laminated pressure is adjusted by adjusting the amount of gas in the laminated sealing cavity, and a heating sheet is fixedly arranged above the laminated plate and on the inner side of the laminated sealing cavity.

10. A pre-vacuum solar cell module laminator characterized by: The pre-vacuum solar cell module laminating machine is multi-layered, each layer comprises the laminating machine according to any one of claims 1-9, the lower heating plate of the upper laminating machine is located above the upper box body of the lower laminating machine and is fixedly connected, and the transmission belt of the component transmission part is arranged around the lower heating plate of the upper laminating machine and the upper box body of the lower laminating machine.

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