An edge cleaning device, edge cleaning system

Abstract

The application provides an edge cleaning device and an edge cleaning system, and relates to the technical field of photovoltaics, to solve the technical problem that residual glue cannot be effectively cleaned at the edge part after photovoltaic laminates are laminated, resulting in poor photovoltaic modules. The edge cleaning device comprises a heating structure, an edge trimming knife, and a glue cleaning knife arranged at a first included angle with the edge trimming knife; at least a first blade part of the edge trimming knife is used to fit and clean the side surface of the photovoltaic laminate; the glue cleaning knife is used to fit and clean the surface edge part of the photovoltaic laminate; the heating structure is used to heat at least a second blade part of the glue cleaning knife to a preset temperature, and the preset temperature is greater than the melting temperature of the glue film in the photovoltaic laminate. The edge cleaning device is used for simultaneous cleaning of the surface edge part and the side surface of the photovoltaic laminate, so that a good glue line is formed in the framing process of the photovoltaic laminate, the sealing property of the photovoltaic module is ensured, and the edge cleaning device has a simple structure.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic technology, and in particular to an edge cleaning device and edge cleaning system. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] During the production of photovoltaic modules, silicone is applied to the backplate after the photovoltaic laminate is framed for sealing, in order to prevent moisture from seeping into the interior of the photovoltaic module from the edges.

[0004] During the lamination of photovoltaic (PV) laminates, poor precision in the application of the encapsulating film and misalignment within the laminator cavity can lead to residual encapsulating film on the sides and edges of the backsheet. Related technologies typically use edge trimming to clean the residual film on the sides of the PV laminate, but this method is ineffective in cleaning the residual film at the edges of the backsheet. This residual film at the edges of the backsheet can cause defects in the silicone sealant lines during framing, resulting in the silicone sealant scraping against the cover glass and causing contamination. Summary of the Invention

[0005] The purpose of this invention is to provide an edge cleaning device and system to solve the technical problem that residual adhesive at the edges of photovoltaic laminates cannot be effectively cleaned after lamination, leading to defects in photovoltaic modules.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] In a first aspect, the present invention provides an edge cleaning device for simultaneously cleaning the surface edge and side of a photovoltaic laminate. The edge cleaning device includes a heating structure, an edge trimming blade, and a glue removal blade arranged at a first angle to the edge trimming blade.

[0008] At least the first cutting edge of the beveling tool is used to adhere to and clean the side of the photovoltaic laminate;

[0009] The adhesive removal knife is used to adhere to and clean the surface edges of the photovoltaic laminate. The heating structure is used to heat at least the second blade portion of the adhesive removal knife to a preset temperature, which is greater than the melting temperature of the adhesive film in the photovoltaic laminate.

[0010] According to at least one embodiment of the present invention, the portion of the adhesive removal knife that removes the second blade from the surface of the photovoltaic laminate has a smooth layer.

[0011] According to at least one embodiment of the present invention, the smooth layer is a Teflon coating or a ceramic coating.

[0012] According to at least one embodiment of the present invention, the adhesive removal knife is an adhesive removal knife with a cavity, and the heating structure includes a heating element arranged in the cavity; or,

[0013] The adhesive removal knife is a solid metal structure, and the heating structure is an electromagnetic induction heating structure sleeved on the outside of the adhesive removal knife.

[0014] According to at least one embodiment of the present invention, when the cleaning knife is a cleaning knife with a cavity, the heating part includes either an electrode distributed in a serpentine pattern or a resistance wire distributed in a serpentine pattern.

[0015] According to at least one embodiment of the present invention, the beveling blade is disposed parallel to the side surface of the photovoltaic laminate; or,

[0016] The beveling blade is set at a second included angle with the side of the photovoltaic laminate.

[0017] According to at least one embodiment of the present invention, the edge cleaning device further includes a pressure sensor disposed on the side of the adhesive removal knife away from the photovoltaic laminate, and the pressure sensor is used to detect the pressure when the adhesive removal knife is bonded to the photovoltaic laminate.

[0018] According to at least one embodiment of the present invention, the edge clearing device further includes a linear motion mechanism and a mounting portion provided on the telescopic portion of the linear motion mechanism, the edge trimming blade is detachably connected to the mounting portion, and the adhesive removal blade is provided on the edge trimming blade;

[0019] The edge cleaning device also includes a slide rail, and the fixed part of the linear motion mechanism is slidably mounted on the slide rail via a slider. The extension direction of the slide rail is consistent with the extension direction of the side of the photovoltaic laminate to be cleaned.

[0020] According to at least one embodiment of the present invention, the edge clearing device further includes a stabilizing part disposed on the edge trimming knife and located on the side of the edge clearing knife away from the photovoltaic laminate;

[0021] The stabilizing portion has at least one plane, which is in contact with the surface of the adhesive remover that is away from the photovoltaic laminate.

[0022] According to at least one embodiment of the present invention, the edge clearing device further includes an image acquisition device disposed on the slider, wherein at least a portion of the image acquisition device is opposite to the side of the photovoltaic laminate.

[0023] In a second aspect, the present invention also provides an edge cleaning system, the edge cleaning system comprising at least one edge cleaning device as described in the first aspect.

[0024] In one or more technical solutions provided in the exemplary embodiments of the present invention, at least one of the following beneficial effects can be achieved.

[0025] The edge-cleaning device of the exemplary embodiment of the present invention is configured such that the edge-cutting blade and the adhesive-removing blade are arranged at a first included angle, and a heating structure is provided on the adhesive-removing blade. This heating structure can heat at least the second blade portion of the adhesive-removing blade, so that the temperature exceeds the melting temperature of the adhesive film in the photovoltaic laminate, that is, the melting temperature of the residual adhesive. The edge-cutting blade has at least the first blade portion attached to the side of the photovoltaic laminate, and the adhesive-removing blade is attached to the surface edge of the photovoltaic laminate. When the edge-cleaning device and the photovoltaic laminate move relative to each other, the edge-cutting blade cleans the residual adhesive on the side of the photovoltaic laminate, and the adhesive-removing blade melts the residual adhesive on the surface of the photovoltaic laminate under the action of high temperature, thus completing the adhesion cleaning work. Compared with scraping with a scraper, the adhesive-removing blade of the exemplary embodiment of the present invention can reduce the probability of scratching the surface of the photovoltaic laminate. Based on this, the edge cleaning device of the exemplary embodiment of the present invention, with its simple structure, can simultaneously clean the surface edge and side of the photovoltaic laminate, so that there is no residual adhesive blocking the silicone overflow stage during the frame assembly process of the photovoltaic laminate, thereby forming a good overflow effect and ensuring good sealing of the photovoltaic module. Attached Figure Description

[0026] The accompanying drawings illustrate exemplary embodiments of the invention and, together with the description thereof, serve to explain the principles of the invention. These drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification.

[0027] Figure 1 This is a schematic diagram of the edge-cleaning device according to an embodiment of the present invention;

[0028] Figure 2 This is an exploded structural diagram of the edge clearing device according to an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of the front view structure of the edge clearing device according to an embodiment of the present invention;

[0030] Figure 4 This is a side view of the edge-cleaning device according to an embodiment of the present invention;

[0031] Figure 5 This is a front structural diagram of a beveling tool according to an embodiment of the present invention;

[0032] Figure 6 This is a schematic diagram of the back structure of a beveling tool according to an embodiment of the present invention.

[0033] Figure label:

[0034] 10. Edge trimmer; 11. First cutting edge; 20. Glue removal knife; 30. Mounting part; 31. Clamping plate; 32. Clamping block; 40. Image acquisition device; 50. Linear motion mechanism; 51. Fixing part; 52. Telescopic part; 61. Slide rail; 62. Slider; 70. Stabilizing part; 71. First hole; 80. Pressure sensor; 81. Second hole; 90. Third hole. Detailed Implementation

[0035] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0036] After the photovoltaic (PV) module laminates are framed, the back panel (the back side) needs to be sealed with silicone to prevent moisture from entering the laminate through the edges of the PV module and causing damage. Before framing, during the lamination process, the adhesive film in the PV laminate melts to bond the layers together. During lamination, due to poor adhesive film laying accuracy or misalignment of the laminate within the laminator cavity, the melted adhesive film may overflow, leaving residue. In related technologies, the residual adhesive on the laminated PV modules cannot be effectively cleaned, leading to poor silicone adhesive lines during framing. This can cause the silicone to rub against the cover glass, resulting in dirt and requiring extensive rework of the PV modules, severely impacting production line capacity.

[0037] To address the aforementioned issues, the edge cleaning device provided in the exemplary embodiment of the present invention sets the edge trimmer and the adhesive removal blade at a first included angle. When the edge cleaning device moves relative to the photovoltaic laminate, it can simultaneously and thoroughly clean the side and surface edges of the photovoltaic laminate, thereby preventing poor sealing caused by poor adhesive lines during subsequent frame assembly. Moreover, the edge cleaning device has a simple structure.

[0038] It should be noted that the edge cleaning device provided in the exemplary embodiments of the present invention is not only applicable to cleaning photovoltaic laminates, but also applicable to other workpieces that need to be cleaned at the same time as the side and the edge of the surface.

[0039] It should also be noted that a photovoltaic laminate typically includes, in sequence, a cover glass, an encapsulating film, a photovoltaic cell, another encapsulating film, and a backsheet. After the photovoltaic laminate is laminated, a frame is installed around its edges to support and protect it, thus forming a photovoltaic module. The "back side" of the photovoltaic laminate mentioned below refers to the backsheet side; it can be understood that the surface of the photovoltaic laminate can be either the cover glass side or the backsheet side. The aforementioned backsheet can be a standard photovoltaic backsheet or a glass backsheet. When the backsheet is a glass backsheet, a double-glass photovoltaic module is formed. The following description assumes the photovoltaic laminate has a rectangular structure as a whole, meaning it has four sides, with the surface being the backsheet side. However, this should not be construed as a structural limitation on the photovoltaic laminate.

[0040] Figure 1 This is a schematic diagram of the edge-cleaning device according to an embodiment of the present invention; Figure 2 This is a three-dimensional exploded view of the edge-cleaning device according to an embodiment of the present invention; Figure 3 This is a front view structural diagram of an edge-cleaning device according to an embodiment of the present invention.

[0041] like Figures 1-3 As shown, the edge cleaning device provided in the exemplary embodiment of the present invention is used to simultaneously clean the surface edge and side of a photovoltaic laminate. The edge cleaning device includes a heating structure, an edge trimming blade 10, and a de-adhesive blade 20 arranged at a first angle to the edge trimming blade 10. At least the first blade 11 of the edge trimming blade 10 is used to adhere to and clean the side of the photovoltaic laminate. The de-adhesive blade 20 is used to adhere to and clean the surface edge of the photovoltaic laminate. The heating structure is used to heat at least the second blade of the de-adhesive blade 20 to a preset temperature, which is greater than the melting temperature of the adhesive film in the photovoltaic laminate.

[0042] In practical applications, the edge-trimming blade 10 and the adhesive-removing blade 20 are arranged at a first included angle. For example, when the surface and side of the photovoltaic laminate are perpendicular, the edge-trimming blade 10 and the adhesive-removing blade 20 are also perpendicular to each other, so that the edge-trimming blade 10 and the adhesive-removing blade 20 form a space that can accommodate the edge of the photovoltaic laminate, allowing the adhesive-removing blade 20 to adhere to the surface edge of the photovoltaic laminate, with at least the first cutting edge 11 of the edge-trimming blade 10 adhering to the corresponding side of the photovoltaic laminate. Exemplarily, when the surface and side of the photovoltaic laminate are not perpendicular, but arranged at a first included angle other than 90°, the edge-trimming blade 10 and the adhesive-removing blade 20 are also arranged at a first included angle other than 90°, so that the adhesive-removing blade 20 adheres to the surface, with at least the first cutting edge 11 of the edge-trimming blade 10 adhering to the side. That is, when the first cutting edge 11 of the edge-trimming blade 10 makes good contact with the side of the photovoltaic laminate, the adhesive-removing blade 20 can also effectively contact the surface of the photovoltaic laminate. Based on this, the edges of photovoltaic laminates can be thoroughly cleaned: residual adhesive on the peripheral edges and sides of the surface can be cleaned at the same time.

[0043] Furthermore, the adhesive removal blade 20 is heated by a heating structure, ensuring that at least the second blade portion of the blade 20, i.e., the portion before the blade 20 contacts the residual adhesive on the back of the photovoltaic laminate, reaches a preset temperature. This preset temperature needs to be higher than the melting temperature of the adhesive film in the photovoltaic laminate. For example, the heating structure can instantaneously heat the second blade portion to 250°C, far exceeding the melting temperature of the adhesive film, thereby enabling the adhesive removal blade 20 to instantly and effectively contact the residual adhesive on the back and complete the adhesive removal work. Based on this, the method of using a high-temperature adhesive removal blade 20 to melt and remove adhesive residue is less likely to scratch the backsheet compared to the prior art of directly using a knife. This is especially important for photovoltaic laminates with glass backsheets, where scratches can severely affect the power generation performance of photovoltaic modules. The adhesive removal blade of this exemplary embodiment reduces the adverse effects caused by scratches.

[0044] In some embodiments, the portion of the adhesive removal blade 20 in the edge-cleaning apparatus of the exemplary embodiment of the present invention that removes the second cutting edge from the surface of the photovoltaic laminate has a smooth layer. During the process of removing adhesive from the surface (i.e., the back side) of the photovoltaic laminate using the adhesive removal blade 20, in addition to using a heating structure to heat the adhesive removal blade 20 at high temperature to reduce scratches on the back side of the photovoltaic laminate, a smooth layer can be provided on the surface of the adhesive removal blade 20 to further reduce the probability of scratching the back side of the photovoltaic laminate by the adhesive removal blade 20, thereby reducing the roughness of the adhesive removal blade 20. Exemplarily, the smooth layer can be provided on any part of the adhesive removal blade 20 except for the second cutting edge, or it can be provided only on the portion of the adhesive removal blade 20 that is in contact with the surface of the photovoltaic laminate, excluding the portion with the second cutting edge.

[0045] For example, the smooth layer can be a Teflon coating or a ceramic coating. Both coatings not only provide a smooth surface for the adhesive removal knife 20, but also have high wear resistance, ensuring the service life of the adhesive removal knife 20. The Teflon coating itself is a metal surface treatment process that can increase the smoothness of the material surface and avoid the problem of excessive roughness of the adhesive removal knife 20 material causing scratches due to sharp points contacting the back plate.

[0046] For example, the aforementioned adhesive removal knife 20 can be made of titanium alloy. Combined with the Teflon coating or ceramic coating, this ensures that the heating structure can quickly and evenly transfer heat to the second blade and the blade body. Furthermore, it ensures that the adhesive removal knife 20 has sufficient hardness and strength to withstand repeated adhesive removal cycles. It is understood that the adhesive removal knife 20 can also be made of a high-hardness aluminum alloy, such as 7021 aluminum alloy, or other metals with high thermal conductivity, such as copper alloys.

[0047] The heating structure described above can be configured in various ways to heat the adhesive removal knife 20 to a high temperature.

[0048] For example, the adhesive removal blade 20 is a blade with a cavity, and the heating structure includes a heating element arranged in the cavity. By distributing the heating element throughout the cavity of the adhesive removal blade 20, the entire blade can be heated quickly and evenly, ensuring that the temperature of the blade, especially the second blade, is high enough during the adhesive removal process, thereby quickly and smoothly removing the adhesion between the photovoltaic laminate backsheet and the residual adhesive.

[0049] For example, the heating element includes either electrodes or resistance wires distributed in a serpentine pattern. By employing the aforementioned serpentine electrodes or resistance wires distributed throughout the cavity of the adhesive removal blade 20, uniform heating of the adhesive removal blade 20 can be achieved to ensure effective adhesive removal. It should be noted that the cavity of the adhesive removal blade 20 can be in the form of a serpentine channel, allowing the electrodes or resistance wires to pass through. Simultaneously, the walls of the channel also serve a heat transfer function, rapidly conducting heat to the surface of the adhesive removal blade 20 and the second cutting edge, thus improving adhesive removal efficiency. For example, the cavity of the adhesive removal blade 20 can also be a completely hollow cavity.

[0050] Figure 5 This is a front structural diagram of a beveling tool according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the back structure of a beveling tool according to an embodiment of the present invention. Figure 6 As shown, in an exemplary embodiment of the present invention, a third hole 90 is provided on the back side of the beveling blade 10, that is, on the side facing away from the photovoltaic laminate. The electrodes or resistance wires of the aforementioned heating element are wound and stored in the third hole 90. The third hole 90 is connected to the cavity of the descaling blade 20. The third hole 90 may not be connected to the front side of the beveling blade 10, that is, the third hole 90 is a blind hole, and the third hole 90 is located above the descaling blade 20. When the beveling blade 10 moves relative to the side of the photovoltaic laminate, the electrodes or resistance wires stored in the third hole 90 provide a certain buffering effect to avoid breaking the electrodes or resistance wires in the cavity of the descaling blade 20, thus ensuring the heating effect and the descaling effect.

[0051] When the adhesive removal blade 20 is a cavity-type adhesive removal blade 20, it can be heated by resistance wire or by electrode. For example, pulsed DC heating can be used. This heating method can achieve an instantaneous heating temperature of over 250°C, which is much higher than the melting temperature of the adhesive film (residual adhesive). This ensures that the adhesive removal blade 20 makes effective contact with the adhesive film at the moment of contact with the photovoltaic laminate backsheet, and completes the adhesion removal work at the same time, making the cleaning more thorough. For example, the adhesive film can be a polyethylene-polyvinyl acetate copolymer (EVA) film, a polyolefin elastomer (POE) film, an EVA / POE laminated film, an EVA / POE / EVA laminated film, or a POE / EVA / POE laminated film.

[0052] In another optional embodiment, the adhesive removal knife 20 is a solid metal structure, and the heating structure is an electromagnetic induction heating structure sleeved outside the adhesive removal knife 20. This electromagnetic induction heating structure can efficiently and rapidly heat the metal adhesive removal knife 20 without direct contact with it. Specifically, electromagnetic induction heating is based on Faraday's law of electromagnetic induction and Lenz's law. When a changing magnetic field passes through a closed conductive loop, an electromotive force is generated in the loop, which in turn generates a current. This principle also applies to non-closed conductors (such as metal blocks), where a changing magnetic field generates closed current paths, i.e., eddy currents, inside the metal. The generation of eddy currents leads to an increase in energy within the metal, manifested as a rise in temperature. Based on this, this electromagnetic induction heating structure can not only rapidly heat the adhesive removal knife 20 to a preset temperature, but also eliminates the need for a cavity inside the adhesive removal knife 20. Therefore, the manufacturing cost is low and the manufacturing process is simple. At the same time, since the adhesive removal knife 20 is a solid metal structure, even if the length of the adhesive removal knife 20 is long, it can maintain the required strength and rigidity. Thus, when removing residual adhesive on the back sheet of the photovoltaic laminate, the fatigue life will not be reduced, ensuring its service life and saving costs.

[0053] To clean the sides of the photovoltaic laminate as thoroughly as possible, the edge-cutting blade 10 is set parallel to the side of the photovoltaic laminate, meaning that the edge-cutting blade 10 is completely attached to the side of the photovoltaic laminate to clean the residual adhesive on the side. This cleaning method also allows the edge-cutting blade 10 to cut off the back plate portion protruding from the side of the photovoltaic laminate, making the side of the photovoltaic laminate flat.

[0054] In some embodiments, the beveling blade 10 is positioned at a second angle to the side of the photovoltaic laminate. That is, the beveling blade 10 has its first cutting edge 11 attached to the side of the photovoltaic laminate, while the remaining portion of the beveling blade 10 is not attached to the side. The angle of the second angle is greater than 0° and less than 5°. This inclined arrangement of the beveling blade 10 prevents it from completely adhering to the side of the photovoltaic laminate, thus avoiding blade jumping during operation and allowing for more thorough cleaning of residual adhesive on the side. Simultaneously, this arrangement of the beveling blade 10 can also cut away the backplate portion extending from the side of the photovoltaic laminate, resulting in a flatter side surface.

[0055] like Figure 5 and Figure 6 As shown, the first cutting edge 11 of the aforementioned beveling cutter 10 can be a cutting edge formed by a groove. In the direction of movement of the beveling cutter 10, the groove is located on the front side of the beveling cutter 10. The height of the groove gradually decreases from the front side to the rear side of the beveling cutter 10. For example, the groove consists of an upper section and a lower section, both of which are arc-shaped and symmetrically arranged with respect to the central axis of the groove. The upper and lower sections form the first cutting edge 11. The height of the opening formed by the groove on the front side of the beveling cutter 10 is greater than or equal to the height of the side surface of the photovoltaic laminate.

[0056] In another alternative embodiment, the first cutting edge 11 of the aforementioned beveling blade 10 may be a cutting edge formed on the front side of the beveling blade 10, and the height of the entire first cutting edge 11 is greater than the height of the side of the photovoltaic laminate.

[0057] For example, the aforementioned beveling blade 10 can be heated by a heating device to more quickly clean the residual adhesive formed on the side of the photovoltaic laminate. The structure and connection relationship between the heating device and the beveling blade 10 are the same as the structure and connection relationship between the heating structure and the adhesive removal blade 20, and will not be repeated here. The beveling blade 10 can also be cleaned without a heating device, using only the aforementioned beveling blade 10 with the first cutting edge 11. When the beveling blade 10 with the first cutting edge 11 made of metal is used for cleaning without heating, the manufacturing and maintenance costs are lower. Furthermore, the first cutting edge 11 of the beveling blade 10 is adjacent to and above the adhesive removal blade 20. Since the adhesive removal blade 20 is connected to a heating structure, and the beveling blade 10 is also made of metal which is easy to conduct heat, when the first cutting edge 11 of the aforementioned beveling blade 10 is adjacent to the adhesive removal blade 20, the temperature of the first cutting edge 11 is sufficient to clean the residual adhesive on the side of the photovoltaic laminate at a high temperature.

[0058] It should be noted that, for the photovoltaic laminate targeted by the aforementioned edge-cleaning device, after lamination and before framing, the cover glass of the photovoltaic laminate is generally located at the bottom, while the back plate is located at the top. Therefore, in the edge-cleaning device of the exemplary embodiment of the present invention, the adhesive removal blade 20 is located above the first cutting edge of the edge-cutting blade.

[0059] Considering that the adhesive removal knife 20 needs to be attached to the edge of the backsheet of the photovoltaic laminate when cleaning residual adhesive, on the one hand, the pressure of the adhesive removal knife 20 needs to overcome the problem of excessive force scraping the backsheet, and on the other hand, it also needs to overcome the problem of insufficient force failing to effectively and thoroughly clean the residual adhesive on the edge of the backsheet.

[0060] like Figure 2 and Figure 3 As shown, the edge cleaning device of the exemplary embodiment of the present invention further includes a pressure sensor 80, which is disposed on the side of the adhesive removal knife 20 away from the photovoltaic laminate. The pressure sensor 80 is used to detect the pressure when the adhesive removal knife 20 is bonded to the photovoltaic laminate.

[0061] For example, the adhesive removal blade 20 is positioned on the edge trimming blade 10 in the form of a cantilever beam, on the side of the adhesive removal blade 20 facing away from the photovoltaic laminate. Specifically, a pressure sensor 80 is fixedly installed on the second hole 81 of the edge trimming blade 10. When the adhesive removal blade 20 is in contact with the backsheet of the photovoltaic laminate, the pressure sensor 80 can effectively detect the pressure between them. For example, when the pressure sensor 80 detects that the pressure value of the adhesive removal blade 20 is greater than 2.5 MPa, an alarm can be triggered by an alarm device communicatively connected to the pressure sensor 80, so that the relative position between the adhesive removal blade 20 and the backsheet of the photovoltaic laminate can be adjusted to restore it to an acceptable pressure range. This setting of the pressure sensor 80 not only prevents the adhesive removal blade 20 from scraping the backsheet due to excessive force during operation, but also controls the working intensity of the adhesive removal blade 20 to ensure its service life; on the other hand, by adjusting the pressure between the adhesive removal blade 20 and the backsheet of the photovoltaic laminate, it can also prevent the situation where the cleaning effect is poor due to insufficient pressure.

[0062] Figure 4 This is a side view of the edge-cleaning device according to an embodiment of the present invention. Figures 1-4 As shown, the edge cleaning device of the exemplary embodiment of the present invention further includes a linear motion mechanism 50 and a mounting part 30 provided on the telescopic part 52 of the linear motion mechanism. The edge trimming blade 10 is detachably connected to the mounting part 30, and the adhesive removal blade 20 is provided on the edge trimming blade 10. The edge cleaning device also includes a slide rail 61. The fixing part 51 of the linear motion mechanism 50 is slidably provided on the slide rail 61 through the slider 62. The extension direction of the slide rail 61 is consistent with the extension direction of the side of the photovoltaic laminate to be cleaned.

[0063] In practical applications, the edge cleaning device detachably connects the edge-trimming blade 10 to the mounting part 30, with the adhesive removal blade 20 mounted on the edge-trimming blade 10. Specifically, the mounting part 30 comprises a clamping block 32 with a groove and a clamping plate 31 that matches the groove. The two are detachably connected by bolts. A portion of the edge-trimming blade 10 is embedded in the groove and fixed to the mounting part 30 by the clamping action of the clamping plate 31 and the bottom wall of the groove. The adhesive removal blade 20 can be directly mounted on the clamping block 32 or mounted on the edge-trimming blade 10. When the adhesive removal blade 20 is mounted on the edge-trimming blade 10, the height of the portion of the edge-trimming blade 10 between the clamping plate 31 and the clamping block 32 can be adjusted to achieve the height adjustment of the adhesive removal blade 20. Furthermore, based on the information from the pressure sensor 80, the pressure between the adhesive removal blade 20 and the backsheet of the photovoltaic laminate can be adjusted.

[0064] When the mounting part 30 is mounted on the telescopic part 52 of the linear motion mechanism 50, the mounting part can be moved away from or closer to the side of the photovoltaic laminate to be cleaned. For example, when cleaning the side to be cleaned, the telescopic part 52 of the linear motion mechanism 50 extends, and the mounting part 30 moves toward the side of the photovoltaic laminate to be cleaned, so that the edge trimmer 10 is at least partially attached to the side of the photovoltaic laminate to be cleaned, and the adhesive removal blade 20 is attached to the back plate of the photovoltaic laminate. After the adhesive removal on this side is completed, the telescopic part 52 of the linear motion mechanism 50 retracts, and the mounting part 30 moves away from the side of the photovoltaic laminate to be cleaned, after which the entire mounting part 30 and the linear motion mechanism 50 return to their initial positions.

[0065] In order to achieve relative movement between the edge-trimming blade 10 and the side of the photovoltaic laminate to be cleaned, thereby completing the cleaning of the entire side, the photovoltaic laminate can be placed on a conveyor belt and moved relative to the edge-trimming blade 10 along the extension direction of the side, while the mounting part 30 and the linear motion mechanism 50 remain stationary.

[0066] Considering the stability of the linear motion of the mounting part 30 under the drive of the linear motion mechanism 50, and thus maintaining the operational stability of the edge-trimming blade 10 and the adhesive-removing blade 20, a guide rail is also provided on the fixing part 51 of the linear motion mechanism 50. A base is slidably mounted on the guide rail, and the mounting part 30 is fixedly connected to the base. That is, the mounting part 30 is simultaneously fixed on the telescopic part 52 of the linear motion mechanism 50 and the base. Based on this, the cooperation between the telescopic part 52 of the linear motion mechanism 50 and the guide rail base can maintain the stability of the mounting part 30 during linear motion, thereby ensuring that the edge-trimming blade 10 and the adhesive-removing blade 20 can be accurately attached to the corresponding positions of the photovoltaic laminate, ensuring the adhesive removal effect.

[0067] In another optional embodiment, the fixing part 51 of the linear motion mechanism 50 is disposed on the slider 62, that is, the entire mounting part 30 and the linear motion mechanism 50 are fixedly connected to the slider 62, and the slider 62 is slidably disposed on the slide rail 61, thereby enabling the entire mounting part 30 and the linear motion mechanism 50 to move along the extension direction of the side of the photovoltaic laminate to be cleaned. The adhesive removal knife 20 and the edge trimming knife 10 fixed on the mounting part 30 can clean the residual adhesive on the entire side of the photovoltaic laminate and an edge of the back plate.

[0068] For example, the linear motion mechanism 50 described above can be one of an electric cylinder, a pneumatic cylinder, or a hydraulic cylinder, and the telescopic rod is formed as a telescopic part 52. The mounting part 30 is fixedly connected to the end of the telescopic rod away from the fixing part 51.

[0069] like Figure 3 and Figure 4 As shown, the edge clearing device of the exemplary embodiment of the present invention further includes a stabilizing part 70, which is disposed on the edge trimming knife 10 and located on the side of the adhesive clearing knife 20 away from the photovoltaic laminate. The stabilizing part 70 has at least one plane, which is in contact with the surface of the adhesive clearing knife 20 away from the photovoltaic laminate.

[0070] When the adhesive removal blade 20 is mounted on the edge trimmer 10, the two are arranged vertically. Because the edge trimmer 10 is relatively thin, the adhesive removal blade 20 extends from one or both sides of the edge trimmer 10 in a cantilever beam configuration. This causes the adhesive removal blade 20 to fluctuate up and down when cleaning residual adhesive on the backsheet of the photovoltaic laminate, making it difficult to completely remove the adhesive. To prevent this, a stabilizing part 70 is provided on the side of the adhesive removal blade 20 facing away from the photovoltaic laminate. For example, the stabilizing part 70 is fixed in a first hole 71, which is a through hole penetrating the edge trimmer 10. The portion of the stabilizing part 70 extending out of the first hole 71 has at least one flat surface that can fit against the surface of the adhesive removal blade 20 facing away from the photovoltaic laminate, using torque-fixed characteristics to keep the adhesive removal blade 20 stable. For example, the portion of the stabilizing part 70 that extends out of the first hole 71 is a structure similar to a hexagonal nut. The stabilizing part 70 can be a structure with hexagonal nuts at both ends, and has a plane forming a stabilizing cleaning knife 20 on both sides of the edge-cutting knife 10.

[0071] like Figures 1-4 As shown, the edge clearing device of the exemplary embodiment of the present invention further includes an image acquisition device 40 disposed on the slider 62, and at least a portion of the image acquisition device 40 is opposite to the side of the photovoltaic laminate.

[0072] For example, the image acquisition device 40 can be one of a camera, a CCD camera, or a video camera. The image acquisition device 40 is connected to the slider 62 and moves with the slider 62 to acquire images of the edge of the photovoltaic laminate. The control system uses AI to intelligently identify whether the edge trimming effect meets the standard requirements, so that if the edge trimming effect is poor, the part can be cleaned repeatedly.

[0073] As can be seen from the above, existing technologies cannot simultaneously address residual adhesive on the backsheet and sides of photovoltaic laminates, and there is a technical problem that the backsheet of the photovoltaic laminate is easily damaged. The edge cleaning device of the exemplary embodiment of the present invention adopts a combination of a simple high-temperature adhesive cleaning knife and an edge trimming knife, which is not only convenient to use and low in manufacturing cost, but also can simultaneously clean residual adhesive on the backsheet and sides of photovoltaic laminates, and the cleaning effect is more thorough, allowing for normal subsequent framing. During the framing process, it does not affect the overflow of silicone adhesive, maintaining the good condition of the adhesive line, thereby ensuring the sealing of the photovoltaic module.

[0074] An exemplary embodiment of the present invention also provides an edge cleaning system, including at least one of the above-described edge cleaning devices.

[0075] In some embodiments, the edge cleaning system includes an edge cleaning device, and the photovoltaic laminate rotates the side to be cleaned to one side of the edge cleaning device through a rotating structure, thereby cleaning the residual adhesive on multiple sides and the edge of the back sheet in sequence. This embodiment uses an edge cleaning device, resulting in low investment costs.

[0076] In other embodiments, the edge cleaning system includes multiple edge cleaning devices. For example, when the photovoltaic laminate is rectangular, it has four sides and requires four edge cleaning devices. Each edge cleaning device corresponds to one of the four sides and together they clean the residual adhesive on each side of the photovoltaic laminate and the edge of the back sheet, resulting in high production efficiency.

[0077] The other advantages of the edge cleaning system compared to the prior art are the same as those of the edge cleaning device described above, and will not be repeated here.

[0078] Those skilled in the art should understand that the above embodiments are merely for illustrating the present invention and are not intended to limit the scope of the invention. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present invention.

Claims

1. An edge-cleaning device, characterized in that, For simultaneous cleaning of the surface edges and sides of photovoltaic laminates, the edge cleaning device includes a heating structure, an edge-cutting blade, and a glue-removing blade positioned at a first angle to the edge-cutting blade; the glue-removing blade is mounted on the edge-cutting blade. At least the first cutting edge of the beveling tool is used to adhere to and clean the side of the photovoltaic laminate; The adhesive removal knife is used to adhere to and clean the surface edge of the photovoltaic laminate. The heating structure is used to heat at least the second blade portion of the adhesive removal knife to a preset temperature, which is greater than the melting temperature of the adhesive film in the photovoltaic laminate. The portion of the adhesive-removing blade facing the surface of the photovoltaic laminate, excluding the second cutting edge, has a smooth layer; The edge cleaning device also includes a stabilizing part, which is disposed on the edge trimming knife and located on the side of the adhesive removal knife away from the photovoltaic laminate. The stabilizing portion has at least one plane, which is in contact with the surface of the adhesive remover that is away from the photovoltaic laminate.

2. The edge-cleaning device according to claim 1, characterized in that, The smooth layer is either a Teflon coating or a ceramic coating.

3. The edge-cleaning device according to claim 1, characterized in that, The adhesive removal knife is an adhesive removal knife with a cavity, and the heating structure includes a heating element arranged within the cavity; or... The adhesive removal knife is a solid metal structure, and the heating structure is an electromagnetic induction heating structure sleeved on the outside of the adhesive removal knife.

4. The edge-cleaning device according to claim 3, characterized in that, When the cleaning knife is a cleaning knife with a cavity, the heating part includes either an electrode distributed in a serpentine pattern or a resistance wire distributed in a serpentine pattern.

5. The edge-cleaning device according to any one of claims 1-4, characterized in that, The edge-cutting blade is arranged parallel to the side of the photovoltaic laminate.

6. The edge-cleaning device according to any one of claims 1-4, characterized in that, The edge cleaning device also includes a pressure sensor, which is located on the side of the adhesive removal knife away from the photovoltaic laminate. The pressure sensor is used to detect the pressure when the adhesive removal knife is in contact with the photovoltaic laminate.

7. The edge-cleaning device according to any one of claims 1-4, characterized in that, The edge cleaning device also includes a linear motion mechanism and a mounting part provided on the telescopic part of the linear motion mechanism. The edge trimming knife is detachably connected to the mounting part, and the adhesive removal knife is provided on the edge trimming knife.

8. The edge-cleaning device according to claim 7, characterized in that, The edge clearing device also includes an image acquisition device disposed on the slider, at least a portion of which is opposite to the side of the photovoltaic laminate.

9. An edge-clearing system, characterized in that, The edge cleaning system includes at least one edge cleaning device as described in any one of claims 1-8.

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