Gas-driven photovoltaic module laminating machine

Abstract

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

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic module laminating equipment, and particularly to a plate pressing laminator with a rigid laminate as a pressing component. Background Art

[0002] At present, photovoltaic module laminators are divided into rubber plate pressing laminators and plate pressing laminators according to different pressing components. Rubber plate pressing laminators are widely used. However, when laminating with a rubber plate, the force of the silicone rubber plate on the edge of the photovoltaic module is greater than that on other parts. Therefore, the edge of the photovoltaic module will be thin. In plate pressing lamination, as the size of the photovoltaic module is getting larger and larger, the required driving force is getting larger and larger, and there are more and more driving devices for driving the laminate. At present, hydraulic cylinders are mostly used as driving devices, and it is more and more difficult to synchronize each driving device. Moreover, since the surface area of the laminate is getting larger and larger, the pressure in the directly driven area of the driving device is greater than that in other parts, resulting in uneven dot lamination and still unable to solve the technical problem of uneven lamination. Therefore, our unit has carried out technical research on laminators to solve the technical problems existing in this field. Summary of the Invention

[0003] The purpose of the present invention is to provide a gas-driven laminator for solving the technical problem of uneven lamination of photovoltaic modules by existing laminators.

[0004] The technical solution for the present invention to solve the technical problem is as follows: A gas-driven photovoltaic module laminator includes an upper box, a lower box, and a laminate. The upper box includes an upper box body, and the lower box includes a lamination workbench. The upper box body is driven by an upper box lifting drive device to lift and approach or move away from the lamination workbench. The laminate is arranged in the upper box body and located between the top of the upper box and the lamination workbench. It also includes a laminate drive device for driving the laminate to lift and applying an extrusion force to the photovoltaic module, and a laminate fixed support device for fixedly arranging the laminate in the upper box body. The laminate drive device includes a high-temperature resistant elastic airtight component located above the laminate. The high-temperature resistant elastic airtight component is fixedly arranged above the laminate through its periphery. A sealed cavity is formed between the laminate and the high-temperature resistant elastic airtight component. The sealed cavity has channels communicating with an inflation device and a vacuum device. The laminate is movably arranged in the upper box body through the laminate fixed support device. The upper box body fixedly supports the laminate fixed support device. When the upper box body is closed with the lower box, when inflating into the sealed cavity, the elastic high-temperature resistant airtight member expands and can meet the inner side of the top of the upper box. The top of the upper box gives a reverse force to the laminate, causing the laminate to compress the elastic support member and move downward, so as to meet the photovoltaic module and apply an extrusion force to the photovoltaic module; The laminate fixing and supporting device includes a fixing member, an elastic supporting member and a guiding column. The fixing member is fixedly arranged on the side wall of the upper box and / or the inner side of the top of the upper box. The guiding column is vertically fixedly arranged on the fixing member through its bottom. At least a pair of opposite side edges of the laminate are movably connected to the guiding column up and down. The laminate can move up and down parallel along the guiding column. The elastic supporting member is located between the guiding column and the laminate; The fixing member is arranged around the lower end of the side wall of the upper box body and protrudes into the upper box body. The lower end of the guiding column is fixedly arranged on the inner convex surface of the fixing member. A frame-type flange is fixedly arranged on the lower end surface of the fixing member. A second sealing ring is arranged on the lower end surface of the frame-type flange to form a sealed laminating cavity after the upper box body and the laminating workbench are closed; One or more laminates are arranged in the upper box body. When two or more laminates are arranged, each laminate is correspondingly provided with a laminate driving device and an elastic high-temperature gas seal. And it is fixedly arranged in the upper box body through the laminate fixing and supporting device. A sealed cavity is formed between the elastic high-temperature gas seal and the laminate. Each sealed cavity has a channel communicated with an inflation device and a vacuum device; Each laminate driving device operates independently; A buffer pad is arranged on the lower surface of the laminate; The laminating workbench is a heating plate, and a heating device is arranged inside the heating plate; The laminator is a multi-layer laminator, including at least two or more upper box bodies. The upper box bodies are stacked up and down. The upper box body of the laminator in the middle layer also serves as the laminating workbench of the laminator in the adjacent upper layer; The elastic high-temperature gas seal is clamped between the upper pressing frame and the lower pressing frame, and its periphery is fixedly and sealedly connected with the periphery of the laminate through the upper pressing frame and the lower pressing frame to form a sealed cavity between the laminate and the high-temperature elastic gas seal component; A sealed laminating cavity is formed after the upper box body and the laminating workbench are closed. The sealed cavity is provided with a channel communicated with a vacuum pumping device and an inflation device.

[0005] The advantages and beneficial effects of the present invention are as follows: For the pneumatic laminator adopting the structure of the present invention, since the pressing member adopts a rigid laminate and the driving device for driving the laminate to press is gas, and the gas flows above the laminate, the pressure on the laminate is uniform. Therefore, the uniformity of the pressure on the surface of the laminate is good, and the situation of large dot pressure will not occur.

[0006] In addition, for the laminator of the photovoltaic module of the present invention, the rigid laminate driving device adopts a gas-driven structure. The laminate driving device is located inside the upper box body and there is no mechanical driving device, so the vertical space can be saved, and the technical problem that the single-layer laminator in the multi-layer laminator in the prior art occupies a large space due to the driving device can be solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 FIG. is a schematic structural diagram of an embodiment of the upper box of the laminator of the present invention; Figure 2 is Figure 1 a schematic top view.

[0008] Figure 3 is Figure 2 a schematic A-A cross-sectional view of, in which the component transmission subassembly is omitted; Figure 4 is a multi-layer laminator using Figure 1 the upper box structure shown in; Figure 5 is Figure 4 a schematic B-B cross-sectional view of.

[0009] Figure 6 FIG. is a schematic structural diagram of another embodiment of the upper box of the laminator, which is a schematic bottom view of the upper box; Figure 7 is Figure 3 an enlarged view of M of.

[0010] DESCRIPTION OF THE REFERENCE NUMERALS 1 - Photovoltaic module 2 - Component transmission subassembly 100 - Laminate fixing and supporting device 101 - Fixing member 102 - Elastic support member 103 - Guide post 200 - Laminate driving device 201 - Elastic high-temperature air seal 202 - Sealing cavity 203 - Upper pressing frame 204 - Lower pressing frame 205 - First sealing ring 300 - Upper box body 301 - Upper box top 302 - Upper box side wall 303 - Laminating cavity 304 - Frame-type sealing flange 305 - Second sealing ring 400 - Lower box 401 - Laminating workbench 500 - Pressing component 501 - Laminate 502 - Buffer pad 503 - Buffer pad fixing plate DETAILED DESCRIPTION OF THE EMBODIMENTS

[0011] The present invention will be further described in detail below through specific embodiments. The following embodiments are only descriptive and not restrictive, and the protection scope of the present invention cannot be limited thereby.

[0012] As Figures 1-6As shown in the figure, the gas-driven photovoltaic module laminator of the embodiment of the present invention is an improvement on the existing plate press laminator. It includes an upper box, a lower box 400, a rigid laminate 501, a laminate fixing and supporting device 100, and a laminate driving device 200. The upper box includes an upper box body 300, and the lower box includes a laminating workbench 401. The laminating workbench is used to support the photovoltaic module 1 during lamination and forms a lamination cavity 303 with the upper box body. The upper box body is driven by an upper box lifting driving device (not shown in the figure) to rise or fall, so as to realize the opening or closing of the lamination cavity. The laminate 501, as a pressing component, is arranged opposite to the laminating workbench 401, and is fixedly arranged inside the upper box body through the laminate fixing and supporting device. Its upper surface is opposite to the inner side of the top 301 of the upper box, and its lower surface is opposite to the laminating workbench. The laminate driving device 200 is used to drive the laminate to move towards the laminating workbench or towards the top of the upper box, so as to press the component by the laminate or make the laminate separate from the component. The laminate fixing and supporting device includes a fixing member 101 fixedly arranged on the inner side of the side wall 302 of the upper box and an elastic support member 102. At least two opposite side edges of the laminate are movably connected with the fixing member 101 through guide columns. An elastic support member is arranged between the laminate and the fixing member. The elastic support member is arranged around the guide shaft. When the elastic support member is a spring, the spring is sleeved outside the guide shaft. The guide columns are arranged vertically, and the laminate is arranged horizontally. The laminate can move up and down parallel along the guide columns. The laminate driving device includes an elastic high-temperature resistant airtight seal 201, an upper pressing frame 203 and a lower pressing frame 204 for fixing the elastic high-temperature resistant airtight seal above the upper surface of the laminate. The elastic high-temperature resistant airtight seal is clamped and fixed between the upper pressing frame and the lower pressing frame. A first sealing ring 205 is arranged between the lower pressing frame and the upper surface of the laminate, so that the elastic high-temperature resistant airtight seal and the laminate and the lower pressing frame form a sealed cavity 202. The sealed cavity 202 can be communicated with an inflation device and an air extraction device arranged outside the upper box body through a sealing pipeline, so as to inflate the sealed cavity by the inflation device and deflate the sealed cavity by the air extraction device. When the lamination cavity is in a closed state and the laminate is in a non-laminating position, the distance between the laminate and the laminating workbench is greater than or equal to the height of the photovoltaic module, and the stroke of the laminate on the guide column is greater than or equal to the distance between the lower surface of the laminate and the upper surface of the photovoltaic module. The fixing member 101 can also be fixedly arranged on the inner side of the top of the upper box.

[0013] In the initial state, the laminate is supported and fixed in the upper box body by elastic support parts. The elastic support parts provide the laminate with a supporting force greater than its gravity so as to support the laminate, the elastic high-temperature resistant air seal and the upper and lower pressure frames that fix the elastic high-temperature resistant air seal. There is no gas in the sealing cavity, and the upper pressure frame is in a state with a gap between it and the top of the upper box or in a state of just contacting with the top of the upper box. When laminating, the photovoltaic module is placed on the laminating workbench, and the upper box lifting drive device drives the upper box to descend and meet the laminating workbench. The upper box and the laminating workbench form a laminating cavity, and the inflating device inflates the sealed cavity. When the sealed cavity is filled with gas, the elastic high-temperature resistant gas seal begins to expand toward the top of the upper box. As the amount of inflation increases, the elastic high-temperature resistant gas seal meets the top of the upper box. When inflated again, the elastic high-temperature resistant gas seal is blocked from expanding upward. Under the reaction force of the top of the upper box, the laminate begins to move downward along the guide column, and the elastic support is compressed. When the laminate meets the photovoltaic module, it applies pressure to the photovoltaic module. The pressure applied to the photovoltaic module depends on the amount of gas filled into the sealed cavity and the pressure of the gas. After the first lamination is completed or the machine is tested, a certain amount of gas can be retained in the sealed cavity to reduce the amount and time of the next inflation and reduce the amount and time of exhaust.

[0014] The laminating machine using the structure of the present invention has a rigid laminated board as the laminating component, and the laminating board driving device is a gas sealed in an elastic high temperature resistant gas seal. When the gas is filled into the sealed cavity, it diffuses evenly, and the pressure distribution on the effective laminating surface of the entire laminate is even, so there will be no point-like uneven force, and there will be no situation where the edge of the photovoltaic module is thinner than other parts. Since the inflation pressurization method is adopted, the pressure is easier to adjust, and continuous pressure adjustment can be achieved.

[0015] In the present invention, when laminating, it is best to first fill the sealed cavity with an appropriate amount of gas so that the top of the elastic high temperature resistant gas seal is in a state of conflict with the top of the upper box, which can save the time of inflation, and because the elastic high temperature resistant gas seal has been in conflict with the top of the upper box, the gas pressure distributed in the sealed cavity is more uniform, and when the gas is filled inward to further expand the elastic high temperature resistant gas seal, the parallelism of the laminate is better. It is best to use multiple inflation holes to inflate the top of the laminate, so that the gas dispersion is better and it is more conducive to uniform lamination pressure.

[0016] In order to adapt to large lamination pressures, prevent the laminates from bending and deforming under high pressure, and further improve the quality of photovoltaic modules, more than two laminates can be provided in a lamination chamber. Above each laminate, an elastic high-temperature resistant airtight seal is fixedly arranged through an upper pressing frame and a lower pressing frame. The laminate is fixedly connected to the top or side wall of the upper box through a fixing member. In this way, there are more than two laminates and laminate driving devices in a lamination chamber. When laminating photovoltaic modules, only a small amount of photovoltaic modules or only one photovoltaic module can be placed under each laminate. In this way, the length and width dimensions of the laminate and the length and width dimensions of the elastic high-temperature resistant airtight seal can be greatly reduced. The deformation amount of the laminate itself during lamination will be reduced, the lamination quality is easy to control, and the inflation devices of each sealing chamber can be set to be independently controlled, and gases with different pressures can be filled into each sealing chamber. Photovoltaic modules with different specifications and / or different process requirements can be laminated simultaneously, suitable for batch production of photovoltaic modules with different specification process requirements. The replacement of each elastic high-temperature resistant airtight seal is more convenient and fast. The elastic high-temperature resistant airtight seal can be sent out through a replacement cart, without replacing a large elastic high-temperature resistant airtight seal, saving costs and reducing the replacement difficulty. The cost of using multiple small-sized rubber plates is also relatively low compared to that of a large-sized elastic high-temperature resistant airtight seal, which can save costs. The laminates can be arranged in a row along the length direction of the upper box body, or can be arranged in multiple rows along the length direction. The distance between each row can be equal or unequal, and the sizes of the laminates can be equal or unequal. The air extraction device and inflation device connected to the sealing chamber formed by each laminate and its high-temperature resistant elastic seal can be controlled integrally or separately.

[0017] The lamination chamber can be sealed or unsealed, mainly depending on whether the lamination process used by the laminator is vacuum lamination or non-vacuum lamination. When vacuum lamination is required, a second sealing ring is provided between the upper box body and the lamination workbench for sealing after they are closed. When used for vacuum lamination, its working process is as follows: The upper box lifting drive device drives the upper box to descend so that the upper box body and the lamination workbench are closed to form a sealed lamination chamber. This process is usually called closing the cover. After closing the cover, the upper and lower spaces of the laminate are connected and at the same air pressure. The lamination chamber is evacuated. When the process vacuum degree is reached in the lamination chamber, gas is filled into the sealed chamber, causing the elastic high-temperature resistant air seal to expand upward. When the elastic high-temperature resistant air seal meets the top of the upper box body, the laminate descends under the action of the reaction force on the top of the upper box and presses on the photovoltaic module after contacting it. During this process, since the lower part of the elastic high-temperature resistant air seal is the sealed chamber, which is fixed by the upper pressing frame and the lower pressing frame around it, only the upper part of the elastic high-temperature resistant air seal is the vacuum space. When the sealed chamber is filled with compressed gas, even if gas is not filled into the sealed chamber, the elastic high-temperature resistant air seal will also expand upward. Therefore, the lamination time can be saved. Preferably, the fixing member is arranged around the lower end of the side wall of the upper box body and protrudes into the upper box body. The lower end of the guiding column is fixedly arranged on the inner protruding surface of the fixing member. A frame-type flange is fixedly arranged on the lower end surface of the fixing member, and a second sealing ring is arranged on the lower end surface of the frame-type flange. In this way, a sealed lamination chamber is formed after the upper box body and the lamination workbench are closed.

[0018] For the gas-driven photovoltaic module laminator adopting the structure of the present invention, the elastic high-temperature resistant air seal serving as the laminate drive device, the upper frame and the lower frame are all located in the lamination chamber, and the sealed chamber is filled with compressed gas. Therefore, the height of the sealed chamber is relatively small, so the vertical space occupied by the laminator is small, which is particularly suitable for multi-layer laminators. As Figure 4 and Figure 5 shown, the upper box of the lower-layer laminator can also serve as the lower box of the upper-layer laminator, and the lamination workbench is located on the top of the upper box of the lower-layer laminator. In this way, the heat generated by heating the lamination workbench can simultaneously heat the gas in the sealed chamber, so that the gas in the sealed chamber has a certain temperature, reducing the heating time of the entire lamination chamber.

[0019] The elastic high-temperature resistant air seal is usually made of a silica gel plate, or it can also be made of a cloth or plate of other elastic high-temperature resistant air sealing materials. Preferably, a buffer pad is arranged on the lower surface of the laminate to buffer the contact between the laminate and the photovoltaic module, avoiding the adverse effects caused by the direct contact between the rigid laminate and the photovoltaic module. The buffer pad can be made of felt material or silica gel material. The buffer pad is fixed on the lower surface of the laminate through a buffer pad fixing plate located around the laminate.

[0020] When the laminator is used for lamination and curing, the lamination workbench is a heating plate with a heating device built in.

[0021] The high-temperature resistant elastic sealing component can be a planar structure made of one of an elastic airtight fabric, a highly airtight bio-based aromatic polyester elastomer material, a thermoplastic elastomer with an airtight layer, a highly airtight bio-based thiophene polyester elastomer material, or more than two of the materials.

Claims

1. A gas-driven photovoltaic module laminator, comprising an upper box, a lower box, and a laminate, wherein the upper box comprises an upper box body, and the lower box comprises a laminating workbench, and the upper box body is driven to move up and down by an upper box lifting drive device so as to move closer to or away from the laminating workbench, characterized in that: The laminate is arranged in the upper box body, between the top of the upper box and the lamination workbench, and also includes a laminate driving device for driving the laminate to rise and fall and applying a squeezing force to the photovoltaic module and a laminate fixing support device for fixing the laminate in the upper box body. The laminate driving device includes a high-temperature resistant elastic air sealing component located above the laminate, and the high-temperature resistant elastic air sealing component is fixedly arranged above the laminate through its periphery. A sealed cavity is formed between the laminate and the high-temperature resistant elastic air sealing component, and the sealed cavity has a channel connected to the inflation device and the vacuum device. The laminate is movably arranged in the upper box body through the laminate fixing support device. The upper box body fixes and supports the laminate fixing support device. When the upper box body and the lower box are closed and the sealed cavity is inflated, the elastic high-temperature resistant air sealing component expands and can meet the inner side of the upper box top. The upper box top applies a reverse force to the laminate, causing the laminate to compress the elastic support component and move downward, so that it can meet the photovoltaic module and apply a squeezing force to the photovoltaic module.

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

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

4. A gas-driven photovoltaic module laminator as claimed in claim 1 or 2, characterized in that: More than one laminate is arranged in the upper box body. When more than two laminates are arranged, each laminate is provided with a laminate driving device and an elastic high-temperature resistant air sealing member, and is fixed in the upper box body by a laminate fixing support device. A sealed cavity is formed between the elastic high-temperature resistant air sealing member and the laminate, and each sealed cavity has a channel connected to the inflation device and the vacuum device.

5. A gas-driven photovoltaic module laminator as claimed in claim 4, characterized in that: Each laminate drive operates independently.

6. A gas-driven photovoltaic module laminator as claimed in claim 1, characterized in that: A buffer pad is provided on the lower surface of the laminate.

7. A gas-driven photovoltaic module laminator as claimed in claim 1, characterized in that: The laminating workbench is a heating plate, and the heating plate is equipped with a heating device.

8. The gas-driven photovoltaic module laminator according to claim 1, characterized in that: The laminator is a multi-layer laminator, comprising at least two upper box bodies, each of which is stacked up and down, and the upper box body of the laminator located in the middle layer also serves as a laminating workbench for the laminator located in the adjacent upper layer.

9. The gas-driven photovoltaic module laminator according to claim 1, characterized in that: The elastic high temperature resistant air sealing member is sandwiched between the upper pressing frame and the lower pressing frame, and its periphery is fixedly sealed and connected to the periphery of the laminate through the upper pressing frame and the lower pressing frame to form a sealed cavity between the laminate and the high temperature resistant elastic air sealing member.

10. The gas-driven photovoltaic module laminator according to claim 1, characterized in that: The upper box body and the laminating workbench are closed to form a sealed laminating cavity, and the sealed cavity is provided with a channel connected to the vacuum device and the inflation device.

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