Dual-power photovoltaic module laminating machine and laminating method

Abstract

The invention aims at providing a dual-power photovoltaic module laminating machine and a laminating method.The dual-power photovoltaic module laminating machine and the laminating method.The dual-power photovoltaic module laminating machine and the laminating method aim at solving the technical problem that in the prior art, a laminated board of a photovoltaic module laminating machine is prone to deformation after being heated, and laminating on a photovoltaic module is nonuniform, the dual-power photovoltaic module laminating machine comprises an upper box and a lower heating plate, and the upper box is located above the lower heating plate; when the cover is closed under driving of the upper box jacking subassembly, the upper box body and the lower heating plate are sealed through the second sealing assembly to form a main vacuum cavity, the dual-power photovoltaic module laminating method comprises an exhaust stage and a laminating and curing stage, in the exhaust stage, the photovoltaic module is heated and pressurized to melt mucilage glue of the photovoltaic module, gas in the photovoltaic module is exhausted, and then the photovoltaic module is solidified through the second sealing assembly. With the adoption of the dual-power photovoltaic module laminating machine and the laminating method, a laminated plate is smooth in the whole laminating process, the pressure applied to the photovoltaic module is uniform, and the yield and the quality of the laminated photovoltaic module can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic module lamination, and in particular to photovoltaic module lamination equipment and a lamination method. Background Art

[0002] Photovoltaic module lamination technology is rapidly evolving, and the requirements for module production capacity and quality are constantly increasing. Currently, high-end laminators are trending towards plate-type laminators. Plate-type laminators consist of a laminate and a lower heating table located below the laminate. The laminate is located within a sealed lamination chamber formed by an upper box and a lower heating table. The photovoltaic module is placed on the lower heating table. A power unit drives the laminate to apply pressure to the module on the lower heating table, squeezing out the gas trapped within the module and completing the lamination process. However, if the laminate is too thick, it requires a high driving force and consumes a lot of material, increasing manufacturing costs. If the laminate is too thin, it will warp due to the heat during the lamination process. In particular, the edges of the laminate will deform due to thermal stress, resulting in uneven pressure on the photovoltaic module and low yield. To address these technical issues, new laminators and lamination methods have been developed to address these technical issues. Summary of the Invention

[0003] The purpose of the present invention is to provide a dual-power photovoltaic module laminator and a lamination method to address the technical problem that the laminating plates of the existing photovoltaic module laminator are easily deformed when heated, resulting in uneven lamination of photovoltaic modules.

[0004] The technical solution of the present invention to solve the technical problem is as follows: A dual-power photovoltaic module laminating machine comprises an upper box and a lower heating plate, wherein the upper box is located above the lower heating plate, and when the upper box lifting portion is driven to close the lower cover, the upper box body and the lower heating plate are sealed by two sealing assemblies to form a main vacuum chamber, and further comprises a laminate, a laminate adjusting device, and a laminate laminating driving device, wherein the laminate is located between the upper box body and the lower heating plate, the main body of the laminate adjusting device is fixedly connected to the upper box body, the laminate is connected to the output end of the laminate adjusting device, the laminate adjusting device is used to adjust the distance between the laminate and the lower heating plate, and during the lamination process, a force is applied to the edge of the photovoltaic module to offset the edge deformation caused by the heating of the photovoltaic module, and the output end of the laminate laminating driving device is fixedly connected to the laminate and is used to apply lamination pressure to the photovoltaic module; Applying pressure to the photovoltaic module by the weight of the laminate to remove the gas inside the photovoltaic module; Two or more laminates are arranged in the upper box body, each laminate has an independent laminate adjustment device and a laminate lamination drive device, each laminate has a plurality of laminate adjustment devices arranged along the long side of the laminate, the laminate adjustment device includes a cylinder or an electric cylinder, the output end of the cylinder or electric cylinder is fixedly connected to the laminate, the cylinder or electric cylinder body is fixedly arranged on the outside of the top of the upper box body, and the gap between the output end of the laminate adjustment 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 sealed and fixedly connected to the output end of the cylinder or electric cylinder, and the lower end is sealed and fixedly connected to the top of the upper box body through a bellows seat; The laminated plate lamination drive device is a pneumatic drive device, which moves the laminated plate downward or upward by inflating and deflating air and adjusts the applied pressure by adjusting the amount of air inflated; The air drive device includes a plate-shaped high-temperature resistant elastic air seal, which is fixedly arranged above the laminate through a sealing component. The laminate, the plate-shaped high-temperature resistant elastic air seal, and the sealing component constitute a laminated sealing cavity. The laminated sealing cavity is provided with inflation and deflation channels. When air is inflated into the laminated sealing cavity, the plate-shaped high-temperature resistant elastic air seal expands upward and meets the inner side of the top of the upper box body, driving the laminate to move downward to apply pressure to the photovoltaic module. The lamination pressure is adjusted by adjusting the amount of gas in the laminated sealing cavity. A heating plate is fixedly provided above the laminate and on the inner side of the laminated sealing cavity. The system further includes a pre-vacuum chamber, which is connected to a main vacuum chamber via a pipeline. A control valve is provided on the pipeline to control the on-off state between the pre-vacuum chamber and the main vacuum chamber. Before evacuating the main vacuum chamber, the pre-vacuum chamber reaches a set vacuum degree. When evacuating the main vacuum chamber, the control valve between the pre-vacuum chamber and the main vacuum chamber opens to connect the two. The pre-vacuum chamber is located outside the top of the upper box body; and / or the volume of the pre-vacuum chamber is 1.5-4 times the volume of the main vacuum chamber; The photovoltaic module laminator is multi-layered, and each layer includes a laminator as described in any one of claims 1-6. The lower heating plate of the upper laminator is located above the upper box body of the lower laminator and is fixedly connected. The conveyor belt installed in the component transmission part surrounds the lower heating plate of the upper laminator and the upper box body of the lower laminator.

[0005] A dual-power photovoltaic module lamination method includes an exhaust phase and a lamination curing phase. In the exhaust phase, the photovoltaic module is heated and pressurized to melt the adhesive of the photovoltaic module and expel gas from the photovoltaic module. In the lamination curing phase, the photovoltaic module is heated to cure the adhesive bonding the layers of the photovoltaic module and apply lamination pressure. Using the dual-power photovoltaic module laminator described above, in the lamination curing phase, a laminate driving device applies a force to the laminate, so that the laminate and the lower heating plate together provide an extrusion force on the photovoltaic module to complete the lamination. A laminate adjusting device applies a counteracting force to at least four corners of the laminate, wherein the counteracting force is equal to the stress generated by thermal deformation of the laminate. During the exhaust stage, the laminate gradually loses the supporting force of the laminate adjustment device until it completely loses the force of the laminate adjustment device after meeting the photovoltaic module, and uses its own gravity to exert pressure on the photovoltaic module to exhaust the gas; and / or when the main vacuum chamber is evacuated, the control valve between the pre-vacuum chamber and the main vacuum chamber is opened to connect the two, and part of the gas in the main vacuum chamber enters the pre-vacuum chamber, and the other part is extracted by the vacuum device; the photovoltaic module is heated by the lower heating plate and the heating plate at the same time.

[0006] The advantages and beneficial effects of the present invention are: The dual-power photovoltaic module laminating machine and laminating method using the structure of the present invention adopts a laminate adjusting device to adjust the distance between the laminate and the lower heating plate, and during lamination, the laminate laminating driving device provides a force to the laminate so that the laminate and the lower heating plate squeeze the photovoltaic module. The laminate adjusting device provides a force to the edge of the laminate to resist the deformation of the edge of the laminate. Therefore, the laminate is flat during the entire lamination process, and the pressure on the photovoltaic module is uniform, which can improve the yield and quality of the laminated photovoltaic modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 A schematic front view of the overall structure of the photovoltaic module laminator of the present invention; Figure 2 for Figure 1 Schematic top view; Figure 3 for Figure 2 AA cross-sectional view schematic diagram; Figure 4 for Figure 2 BB cross-sectional view.

[0008] Description of Reference Numerals 1- Upper box lifting part installation; 2- Component transmission part installation 4- Components; 100-Laminate lamination drive device 101-Plate-shaped high temperature resistant elastic air seal 102-Lower pressure frame 103 -Sealing strip 104 - Upper pressing frame 105 - Laminated sealing cavity 200-Laminate adjustment device; 206-Bellows seat; 207-Cylinder / electric cylinder 208-Lifting plate 209-Guide connecting shaft 210-Bellows 211-Laminate 212-Felt pad 300-upper box 301-main vacuum chamber 302-heating plate 303-heating plate fixing plate 304-pressing frame 306-elastic sealing strip 400-lower box 401-lower heating plate 501-Pre-vacuum chamber 502-Filling and degassing channels DETAILED DESCRIPTION

[0009] The present invention will be further described in detail below through specific examples. The following examples are only illustrative and not restrictive, and the scope of protection of the present invention cannot be limited thereto.

[0010] like Figure 1-4As shown, the main structure of the laminating machine of the embodiment of the present invention includes an upper box 300, a lower box 400, and a laminate 211. The lower box includes a lower heating plate 401, and the upper box includes an upper box body. A sealing assembly consisting of a pressure frame 304 and an elastic sealing strip 306 is fixedly provided at the lower end of the upper box body. When the upper box and the lower box are closed, the upper box and the lower box form a main vacuum chamber 301 through the sealing assembly. The laminate 211 is arranged below the upper box and above the lower heating plate 401. The lower surface of the laminate is arranged opposite to the lower heating plate, and at least two oppositely arranged edges of the upper surface of the laminate are fixedly connected to the output ends of multiple laminate adjustment devices 200. The laminate adjustment device is located outside the top of the upper box body. In this way, the laminate adjustment device can output a force to the edge of the laminate, and at the same time, the laminate is fixed in the upper box body. Multiple laminate adjustment devices are arranged at least along the long side of the laminate. The laminate lamination drive device 100 is a drive device that applies extrusion pressure to the photovoltaic module by the laminate and the lower heating plate. This extrusion pressure is the lamination pressure of the photovoltaic module. In the present invention, the laminate lamination drive device can be a mechanical drive device, preferably a pneumatic drive device. The pneumatic drive device moves the laminate downward or upward by inflating and deflating and adjusts the applied pressure by adjusting the amount of inflation. In the present invention, the preferred laminate lamination drive device adopts the following structure, including a plate-like high-temperature resistant elastic air seal 101. The plate-like high-temperature resistant elastic air seal is located above the laminate and is sealed to the top of the laminate through a sealing assembly 2 composed of an upper pressing frame 102, a lower pressing frame 104 and a sealing strip 103. The peripheral fixing clamp of the plate-like high-temperature resistant elastic air seal is provided between the upper pressing frame and the lower pressing frame, so that a sealed lamination sealing cavity 105 is formed between the plate-like high-temperature resistant elastic air seal and the laminate. There is a certain gap between the plate-shaped high-temperature resistant elastic air seal and the inner side of the top of the upper box body, or the plate-shaped high-temperature resistant elastic air seal is in contact with the inner side of the top of the upper box body. When gas is injected into the laminate sealing cavity, the plate-shaped high-temperature resistant elastic air seal can generate an interaction force with the top of the upper box body, causing the laminate to move downward. When the laminate sealing cavity is evacuated, the interaction force between the plate-shaped high-temperature resistant elastic air seal and the top of the upper box body is weakened or lost, causing the laminate to move upward. The pressure applied to the photovoltaic module is adjusted by adjusting the amount of gas injected into the laminate sealing cavity. When the laminate sealing cavity is inflated, the laminate adjustment device does not provide support for the laminate. In the present invention, the preferred laminate adjustment device includes a cylinder / electric cylinder 207, a lifting plate 208, a guide connecting shaft 209 and a sealing device, wherein the lower end of the guide connecting shaft is fixedly connected to the upper surface of the laminate, and the output end of the cylinder / electric cylinder is fixedly connected to the upper end of the guide connecting shaft, thereby adjusting the upper and lower positions of the laminate through the extension and retraction stroke of the output end of the cylinder / electric cylinder, and sealing the gap between the guide connecting shaft and the top of the upper box body through the sealing device.It is best to use the following sealing device including a bellows 210 and a bellows seat 206. The bellows is sleeved on the outside of the guide connecting shaft, sealed at the top by a lifting plate 208, and the lower end is located above the bellows seat 206. It is sealed and fixedly connected to the upper box body through the bellows seat. Preferably, a laminate adjustment device includes two electric cylinders / pneumatic cylinders. The two electric cylinders / pneumatic cylinders are respectively arranged on both sides of the guide connecting shaft and are connected to the lifting plate. This is conducive to the smoothness of the up and down movement of the laminate. In addition, since the deformation of the laminate is small or basically no deformation, the laminate has good uniformity in the pressure applied to the photovoltaic module, which can prevent excessive glue overflow due to excessive pressure at a certain corner position, making the glue overflow more uniform. Since the glue overflow is uniform, its position is basically the same for battery modules of the same batch specification, thus preventing contamination of the battery modules.

[0011] During operation, the cylinder / electric cylinder lifts the lifting plate 208 so that the guide connecting shaft 209 drives the laminate 205 to move upward, so that the laminate is in a lifted state, and the component 4 is transmitted to the specified position below the laminate through the component transmission part 2, and the upper box is driven downward by the upper box lifting part to close the upper box and the lower box, forming a main vacuum chamber 301 between the lower heating plate and the upper box body. After closing, the main vacuum chamber is evacuated to a predetermined vacuum degree, so that the laminate adjustment device gradually loses its support force on the laminate, and the laminate moves downward under the action of gravity. When it falls on the photovoltaic module, it completely loses its support force, and the laminate applies gravity force to the photovoltaic module. The laminate has a predetermined gravity, which is consistent with the pressure required for exhaust of the photovoltaic module, and can discharge the gas in the photovoltaic module. Since the support force of the laminate adjustment device on the laminate is gradually reduced until it completely loses its support after meeting the photovoltaic module. The supporting force causes the laminate to not fall freely but fall gently, so it will not cause impact to the photovoltaic module. The lower heating plate heats the photovoltaic module. After the exhaust is completed, the laminate adjusting device and the laminate laminating drive device both apply force to the laminate. During this process, the force applied by the laminate adjusting device acts on the edge of the laminate to overcome the deformation force caused by the heating of the laminate. The force applied by the laminate laminating drive device acts on the photovoltaic module to apply lamination pressure to the photovoltaic module. Since the laminate adjusting device has been applying force to overcome the deformation of the laminate during the lamination and curing process, the edge of the laminate will not warp or deform. Since the upper surface of the laminate is subjected to gas pressure, the lamination pressure is evenly distributed. After the lamination and curing is completed, since the laminate has not deformed during the lamination and curing process, it will not deform during the entire production process and will remain flat. The force applied by the laminate adjusting device is adjusted according to the lamination time, so that its force is equivalent to the edge warping force generated during the heating process, so as to ensure that no additional pressure is caused to the photovoltaic module. In the present invention, the laminate is lifted and fed out of position by the laminate adjusting device, and pressure is applied to the corners of the photovoltaic module during lamination and the lamination distance is controlled, thereby adjusting the thickness of the glue overflow at the corners of the module. In the present invention, since the laminate adjusting device controls the deformation of the corners of the laminate during lamination, the laminate does not deform or deforms very little during the lamination process, and the glue overflows evenly, thereby reducing the unevenness of the glue overflow.

[0012] A pre-vacuum chamber 501 can also be provided for pre-vacuuming, providing an alternative channel for exhausting the main vacuum chamber 301, shortening the main vacuum chamber's exhaust time and improving overall production efficiency. The pre-vacuum chamber is connected to the main vacuum chamber via a pipeline, and a control valve is provided on the pipeline to control the flow between the pre-vacuum chamber and the main vacuum chamber. The volume of the pre-vacuum chamber is at least 1 times the volume of the main vacuum chamber, preferably 2-4 times. The main vacuum chamber is connected to a vacuum pump, and the main vacuum chamber and the pre-vacuum chamber are connected in parallel. Before lamination, the pre-vacuum chamber is evacuated. Before evacuating the pre-vacuum chamber, the control valve between the two is closed to prevent the two from being connected, so that the vacuum in the pre-vacuum chamber reaches the process vacuum degree of the main vacuum chamber. When evacuating the main vacuum chamber, the control valve between the two is opened to connect the two, and the main vacuum chamber is evacuated at the same time. Since the main vacuum chamber and the pre-vacuum chamber are connected in parallel, when evacuating the main vacuum chamber, part of the gas in the main vacuum chamber is drawn away by the vacuum device, and part flows into the pre-vacuum chamber. In addition, the volume of the pre-vacuum chamber is more than 1 times that of the main vacuum chamber. Therefore, the gas in the main vacuum chamber The speed of removal is significantly improved, especially when the volume of the pre-vacuum chamber is more than twice that of the main vacuum chamber. When the inner cavity of the pre-vacuum chamber is connected to the main vacuum chamber, it is equivalent to reducing the vacuum degree of the main vacuum chamber by more than half. Therefore, the main vacuum chamber can reach the required vacuum degree more quickly. When the vacuum degrees in the main vacuum chamber and the pre-vacuum chamber reach a relative balance, the control valve between the two is closed, and the pre-vacuum chamber is evacuated before the main vacuum chamber is evacuated next time. When the main vacuum chamber is evacuated next time, the control valve between the two is opened. Repeating this operation can enable the main vacuum chamber to reach a certain vacuum degree in advance when evacuating. The pre-vacuum chamber is preferably fixed above the top of the upper box body and between the spaces surrounded by the laminate adjustment devices, almost covering the entire top space of the upper box body. Such an arrangement can effectively reduce the overall height of the pre-vacuum chamber, facilitate the laminator of the present invention to adopt a multi-layer structure, and does not occupy space outside the laminator. At the same time, since the pre-vacuum chamber is located at the top of the upper box body and is always in a vacuum state or a state with very scarce gas, it can reduce the heat dissipation on the top of the upper box body and improve the thermal insulation effect of the entire upper box. The height of the pre-vacuum chamber is preferably consistent with the overall height of the laminate adjustment device, so that the space can be more intensive and more fully utilized.

[0013] Preferably, a heater 302, typically an electric heater, is fixedly mounted on the upper surface of the laminate 211 via a heater fixture 303. Ideally, the heaters are evenly positioned along the laminate surface, with direct contact between the heaters and the laminate. This allows the heaters to heat the laminate more quickly to the desired temperature, resulting in more uniform heating of the photovoltaic module, faster temperature rise, and improved temperature uniformity.

[0014] The laminator of the present invention can be equipped with multiple laminates in the upper box body, and the multiple laminates are distributed in a single row or multiple rows along the running direction of the photovoltaic module. Each laminate is independently provided with a laminate adjustment device and a laminate lamination drive device, and a heating plate is provided on each laminate. The laminate adjustment device, laminate lamination drive device and heating control device of each laminate can be connected to the control system respectively. In this way, the pressurization pressure and heating temperature of each laminate can be individually controlled, and photovoltaic modules of different specifications or processes can be pressurized at the same time, thereby improving the applicability of the photovoltaic module laminator.

[0015] Typically, in order to reduce the impact force between the laminate and the photovoltaic modules during lamination, a flexible pad such as a felt pad 212 is provided on the lower surface of the laminate to reduce the possibility of damage to the photovoltaic modules.

[0016] The laminator of the present invention can be single-layer or multi-layer with two or more layers. In the case of a multi-layer laminator, two or more single-layer laminators are stacked, with the lower heating plate of the lower layer located above the upper box body. When the pre-block cavity is located above the upper box body, the two are located above the pre-vacuum chamber to form a whole. The conveyor belt of the component transport unit 2 surrounds the lower heating plate of the upper laminator and the upper box body of the lower laminator. The plate-shaped high-temperature resistant elastic air seal is preferably made of silicone sheet, rubber sheet, etc.

[0017] Now, the working process will be described by taking the laminating machine of the present invention as an example in which both the heating plate and the pre-vacuum device are provided. Before lamination, the pre-vacuum chamber is first evacuated to reach a predetermined vacuum degree. The laminate adjustment device is in a jacking state, so that the laminate is in a jacking state. The conveyor belt installed by the component transmission part drives the photovoltaic component to the designated position on the heating plate. The laminate adjustment device drives the laminate to descend, so that the upper box and the lower heating plate are sealed by the sealing component to form the main vacuum chamber. The control valve between the main vacuum chamber and the pre-vacuum chamber is opened to connect the main vacuum chamber and the pre-vacuum chamber. At the same time, the main vacuum chamber is evacuated by the vacuum device. The vacuum channel of the main vacuum chamber and the connecting channel with the pre-vacuum chamber are connected in parallel. Therefore, part of the gas in the main vacuum chamber is extracted by the vacuum device, and part of it enters the main vacuum chamber. In the pre-vacuum chamber, the main vacuum chamber is made to reach the predetermined vacuum degree at a faster speed. When the predetermined vacuum degree is reached, the cylinder / electric cylinder of the laminate adjustment device is switched to a non-powered output state, causing the laminate to move downward under the action of its own weight. However, since the supporting force of the laminate adjustment device gradually decreases during the conversion from powered to non-powered, the laminate does not lose its supporting force all at once, but gradually loses its supporting force. Therefore, it encounters the photovoltaic module at a preset speed and time, and relies on the gravity of the laminate to pressurize and exhaust the module 4 through the felt pad 206. The electric heating plate 302 set on the laminate 205 heats the laminate. After the exhaust stage is completed, the laminate adjustment device switches to output downward pressure on the laminate, applying pressure to the corners of the laminate to resist deformation of the corners of the laminate. The lamination state of the corners of the module can be adjusted and improved by adjusting the pressure of the power source of the laminate adjustment device; the lamination sealing chamber 105 is inflated to provide lamination pressure to the module to laminate the module 4. After lamination is completed, close the control valve between the main vacuum chamber and the pre-vacuum chamber, evacuate the lamination sealing chamber to make it lose pressure on the laminate, and the laminate adjustment device drives the laminate to move up, open the upper box cover, complete the lamination, and evacuate the pre-vacuum chamber.

Claims

1. A dual-power photovoltaic module laminator, comprising an upper box and a lower heating plate, wherein the upper box is located above the lower heating plate. When the upper box lifting portion is driven to close the lower cover, the upper box body and the lower heating plate are sealed by a sealing assembly to form a main vacuum chamber, characterized in that: It also includes a laminate, a laminate adjustment device, and a laminate lamination drive device. The laminate is located between the upper box body and the lower heating plate. The main body of the laminate adjustment device is fixedly connected to the upper box body. The laminate is connected to the output end of the laminate adjustment device. The laminate adjustment device is used to adjust the distance between the laminate and the lower heating plate. During the lamination process, a force is applied to the edge of the photovoltaic module to offset the edge deformation caused by the heat of the photovoltaic module. The output end of the laminate lamination drive device is fixedly connected to the laminate and is used to apply lamination pressure to the photovoltaic module.

2. A dual-power photovoltaic module laminator according to claim 1, characterized in that: The weight of the laminate is used to apply pressure to the photovoltaic module to remove the gas inside the photovoltaic module.

3. A dual-power photovoltaic module laminator according to claim 1 or 2, characterized in that: Two or more laminates as described above are arranged in the upper box body, each laminate has an independent laminate adjustment device and a laminate lamination drive device, each laminate has multiple laminate adjustment devices arranged along the long side of the laminate, the laminate adjustment device includes a cylinder or an electric cylinder, the output end of the cylinder or electric cylinder is fixedly connected to the laminate, the cylinder or electric cylinder body is fixedly arranged on the outside of the top of the upper box body, and the gap between the output end of the laminate adjustment 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 sealed and fixedly connected to the output end of the cylinder or electric cylinder, and the lower end is sealed and fixedly connected to the top of the upper box body through the bellows seat.

4. The dual-power photovoltaic module laminator according to claim 1, characterized in that: The laminated board laminating drive device is a pneumatic drive device, which moves the laminated board downward or upward by inflating and deflating air and adjusts the applied pressure by adjusting the amount of inflation.

5. The dual-power photovoltaic module laminator according to claim 4, characterized in that: The air drive device includes a plate-shaped high-temperature resistant elastic air seal, which is fixedly arranged above the laminate through a sealing component. The laminate, the plate-shaped high-temperature resistant elastic air seal, and the sealing component constitute a laminated sealing cavity. The laminated sealing cavity is provided with inflation and deflation channels. When air is inflated into the laminated sealing cavity, the plate-shaped high-temperature resistant elastic air seal expands upward and meets the inner side of the top of the upper box body, and then drives the laminate to move downward to apply pressure to the photovoltaic module. The lamination pressure is adjusted by adjusting the amount of gas in the laminated sealing cavity. A heating plate is fixedly provided on the inner side of the laminated sealing cavity above the laminate.

6. The dual-power photovoltaic module laminator according to claim 1, characterized in that: The system also includes a pre-vacuum chamber, which is connected to the main vacuum chamber through a pipeline. A control valve is provided on the pipeline to control the on-off state between the pre-vacuum chamber and the main vacuum chamber. Before the main vacuum chamber is evacuated, the pre-vacuum chamber reaches a set vacuum degree. When the main vacuum chamber is evacuated, the control valve between the pre-vacuum chamber and the main vacuum chamber is opened to connect the two.

7. A dual-power photovoltaic module laminator according to claim 6, characterized in that: The pre-vacuum chamber is located outside the top of the upper box body; and / or the volume of the pre-vacuum chamber is 1.5-4 times the volume of the main vacuum chamber.

8. The dual-power photovoltaic module laminator according to claim 1, characterized in that: The photovoltaic module laminator is multi-layered, and each layer includes a laminator as described in any one of claims 1-6. The lower heating plate of the upper laminator is located above the upper box body of the lower laminator and is fixedly connected. The conveyor belt installed in the component transmission part surrounds the lower heating plate of the upper laminator and the upper box body of the lower laminator.

9. A dual-power photovoltaic module lamination method, comprising a degassing stage and a lamination and curing stage, wherein the photovoltaic module is heated and pressurized in the degassing stage to melt the adhesive of the photovoltaic module and expel the gas in the photovoltaic module, and the lamination and curing stage is heated to cure the adhesive bonding the layers of the photovoltaic module and apply lamination pressure, characterized in that: A dual-power photovoltaic module laminator as described in any one of claims 1-8 is used, and during the lamination curing stage, a laminate driving device applies a force to the laminate, so that the laminate and the lower heating plate together provide an extrusion force to the photovoltaic module to complete the lamination, and a laminate adjusting device applies a counteracting force to at least four corners of the laminate, and the counteracting force is equal to the stress generated by the laminate due to thermal deformation.

10. A dual-power photovoltaic module lamination method according to claim 9, characterized in that: During the exhaust stage, the laminate gradually loses the supporting force of the laminate adjustment device until it completely loses the force of the laminate adjustment device after meeting the photovoltaic module, and uses its own gravity to exert pressure on the photovoltaic module to exhaust the gas; and / or when the main vacuum chamber is evacuated, the control valve between the pre-vacuum chamber and the main vacuum chamber is opened to connect the two, and part of the gas in the main vacuum chamber enters the pre-vacuum chamber, and the other part is extracted by the vacuum device; the photovoltaic module is heated by the lower heating plate and the heating plate at the same time.

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