Photovoltaic module servicing and cleaning device

Abstract

The present application relates to a kind of photovoltaic module maintenance cleaning device in photovoltaic module preparation technical field, mainly used for the frame of each mechanism, the maintenance module for detecting repair of junction box on photovoltaic module, and the cleaning module for wiping and cleaning the excess glue liquid of the corner of photovoltaic module and other dirt.The photovoltaic module maintenance cleaning device of the present application, by integrating design of the virtual soldering detection of the wire in junction box and the edge cleaning mechanism of photovoltaic panel, so that photovoltaic module can simultaneously clean, detect and repair in the same area, greatly improve production efficiency.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic module manufacturing technology, and more specifically, to a photovoltaic module maintenance and cleaning device. Background Technology

[0002] Photovoltaic power generation is a technology that directly converts light energy into electrical energy using the photovoltaic effect at the semiconductor interface. It is a clean energy source with a very promising future. During the assembly of photovoltaic modules, the photovoltaic panels need to be placed within a frame coated with adhesive for bonding and fixing. After the photovoltaic panels are bonded to the frame, excess adhesive may appear at the four corners. To address this issue, the conventional practice is to have one person on each side of the photovoltaic module wipe the corners clean with a lint-free cloth. Additionally, before packaging the photovoltaic modules, it is necessary to inspect the soldering of the wiring inside the junction box for defects such as cold solder joints and the proper conduction of diodes. Traditionally, this is done manually using a testing pen to check each connection wire and terminal solder joint individually. This method is not only inefficient but also prone to omissions due to operator negligence.

[0003] In existing technologies, the commonly used method is to test and clean the photovoltaic modules through an assembly line process involving multiple steps, which is inefficient. Summary of the Invention

[0004] In view of the deficiencies in the prior art, the purpose of this invention is to provide a photovoltaic module maintenance and cleaning device.

[0005] A photovoltaic module maintenance and cleaning device according to the present invention includes: The frame includes a frame body and a material conveying mechanism. The material conveying mechanism is located inside the frame body and conveys the photovoltaic module to be inspected from the inlet of the frame body to a predetermined position. The inspection module is suspended and connected to the upper structural beam of the frame body. It includes a weld point detection unit, which includes a detection mechanism, a clamping mechanism, a support frame, and a lifting mechanism. The detection mechanism and the clamping mechanism are installed on the support frame. The detection mechanism includes a fork, a conductive block, and a first drive unit. The lower end of the fork is provided with a tooth. The conductive block is connected to the inner surface of the tooth. The inner surface of the tooth refers to the side that moves the weld point in the direction of contact after the tooth contacts the weld point to be inspected. The upper end of the fork is driven and connected to the first drive unit. The lifting mechanism includes a lifting drive motor and a support frame. The support frame is suspended and connected to the support frame through the lifting motor. The lifting motor drives the support frame to descend to a predetermined position. The clamping mechanism is used to clamp the junction box to be inspected. The top of the teeth is used to contact the solder joints of the wiring inside the junction box to be inspected. The first drive unit is used to drive the fork to move horizontally. The top of the teeth is used to move the solder joints. When there is a poor solder joint, the end of the solder wire that is moved and lifted by the teeth contacts the conductive block and conducts electricity. The cleaning module includes a sliding frame and a cleaning unit slidably connected to the sliding frame. Two sets of the sliding frames are slidably connected to the structural beams of the frame body, and the two sets of sliding frames are located on both sides of the material conveying mechanism. The cleaning unit is used to wipe and clean the edges and corners of the photovoltaic panel.

[0006] In some embodiments, the support frame includes multiple support columns, and a first platform, a second platform, and a third platform spaced apart from bottom to top on the support columns. The second platform is suspended and connected to the third platform by a hanger rod. The second platform is slidably connected to the support columns. The first drive unit is connected to the first platform. The first platform is provided with a through hole for the teeth to pass through. The clamping mechanism includes a second drive motor and clamping plates. The second drive motor is suspended and connected to the second platform. The two clamping plates are driven and connected to both sides of the telescopic shaft of the second drive motor. The lower end of the clamping plate is a clamping foot. The teeth are located between the two clamping feet. The two clamping feet are used to clamp the junction box to be inspected.

[0007] In some embodiments, the first drive unit includes a first drive motor, a drive arm, and elastic elements. The drive arm is horizontally D-shaped and includes a straight arm and an arc arm. The first drive motor drives and connects to the arc arm. The shift fork is slidably connected to the straight arm. The two elastic elements are respectively sleeved on the straight arm and pressed between the shift fork and the end of the arc arm.

[0008] In some embodiments, the shift fork includes a fixed slider and a movable slider. The fixed slider is connected to the drive arm, and the movable slider is vertically slidable along the fixed slider. The shift tooth is located at the lower end of the movable slider, and a hook is provided at the upper end of the movable slider. The hook is engaged with the upper end of the fixed slider, and a displacement sensor is provided at the upper end of the fixed slider. The displacement sensor is used to obtain the distance the hook moves upward.

[0009] In some embodiments, the maintenance module further includes a cold solder joint repair unit, which includes a cold solder joint repair mechanism and a lifting drive assembly; The faulty weld repair mechanism includes a welding component and a weld crimping component. The lifting drive component includes a lifting drive cylinder and a drive plate. The lifting drive cylinder is fixedly connected to the side of the support frame and drives the drive plate to move up and down. The welding component and the weld crimping component are connected to the drive plate. The weld crimping component presses down the wire end that has been lifted up by the push. The welding component is used for re-welding and repairing the wire end.

[0010] In some embodiments, the inspection module further includes a probe, the upper part of which is connected to the side of the fork, and the lower end of which is located outside the tooth. The probe is used to make contact with the connecting piece of the diode that is electrically connected to the ribbon cable in the junction box to be inspected.

[0011] In some embodiments, the cleaning unit includes: A material supply mechanism used to supply nonwoven fabrics for cleaning purposes; A side wiping mechanism is located on the side of the feeding mechanism. The side wiping mechanism includes a side wiping drum. The non-woven fabric output by the feeding mechanism rotates with the side wiping drum. The outer surface of the rotating non-woven fabric is attached to the side edge of the photovoltaic module to be cleaned for cleaning. A guide is located below the side of the side wiping drum. The non-woven fabric that rotates out of the side wiping drum is wrapped around the guide, and the outer surface of the non-woven fabric faces the opposite direction after passing through the guide. The bottom wiping mechanism includes a bottom wiping rotating cylinder, which is located below the side wiping rotating cylinder. The axis of the bottom wiping rotating cylinder is perpendicular to the central axis of the side wiping rotating cylinder. The outer surface of the non-woven fabric that rotates out through the guide member is attached to the surface of the bottom wiping rotating cylinder and rotates synchronously. The inner surface of the rotating non-woven fabric is attached to the bottom edge of the photovoltaic module to be cleaned for cleaning.

[0012] Mounting frame, the feeding mechanism, the side wiping mechanism, the guide member and the bottom wiping mechanism are mounted on the mounting frame; A carriage, comprising a slide rail and a displacement drive motor, wherein a mounting bracket is slidably connected to the slide rail, and the displacement drive motor drives the mounting bracket to move linearly along the slide rail.

[0013] In some embodiments, the side wiping mechanism further includes a first pressing assembly, which includes a first pressure roller, a second pressure roller, and a first telescopic unit. The first pressure roller and the second pressure roller are arranged side by side at intervals on the side of the side wiping drum. The first telescopic unit drives the first pressure roller and the second pressure roller to move horizontally synchronously. The nonwoven fabric is wrapped around the surface of the side wiping drum from the first pressure roller and then wrapped out through the second pressure roller. The bottom wiping mechanism further includes a second pressing component, which includes a third pressure roller, a fourth pressure roller, and a second telescopic unit. The third pressure roller and the fourth pressure roller are arranged side by side at intervals below the bottom wiping drum. The second telescopic unit drives the third pressure roller and the fourth pressure roller to move vertically synchronously. The non-woven fabric is wrapped around the surface of the bottom wiping drum from the third pressure roller and then wrapped out from the fourth pressure roller.

[0014] In some embodiments, the cleaning unit further includes a rotary drum drive mechanism, which includes a rotary drum drive motor, a main drive shaft, and a driven shaft. One end of the main drive shaft is driven and connected to the rotary drum drive motor, and the other end of the main drive shaft is connected to the side wiping rotary drum. One end of the driven shaft is rotatably connected to the middle of the main drive shaft, and the bottom wiping rotary drum is rotatably connected to the driven shaft.

[0015] In some embodiments, the cleaning unit further includes a blowing assembly located on the outer side of the bottom wiping mechanism. The blowing assembly includes a bracket and a blowing rod, the blowing rod being connected to the bracket and having air holes. After external high-pressure gas is connected to the blowing rod, high-pressure airflow is sent out through the air holes and blown toward the edges of the photovoltaic module to be cleaned.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The photovoltaic module inspection and cleaning device of the present invention integrates the detection of poor soldering of wiring in junction box with the edge cleaning mechanism of photovoltaic panel, so that photovoltaic modules can be cleaned, inspected and repaired in the same area at the same time, which greatly improves production efficiency.

[0017] 2. The photovoltaic module inspection and cleaning device of the present invention adopts a conductive block with current conduction above the picking teeth near the picking solder joint, so that the poor solder joint condition can be confirmed after the end of the picked wire comes into contact with the conductive block. The structure is simple and easy to operate. It solves the problems of complex mechanism, cumbersome calculation and judgment process and high cost caused by the use of visual equipment for poor solder joint detection in the prior art through physical means. It greatly improves the detection accuracy and response rate of the detection mechanism, while reducing the overall cost of the detection device.

[0018] 3. The photovoltaic module maintenance and cleaning device of the present invention, by offsetting the side wiping drum and the bottom wiping drum and setting the drum bodies at a 90° angle, and by using a guide to flip the wiping surfaces of the non-woven fabric used for wiping the sides and bottom, not only can the sides and bottom be cleaned simultaneously, but also the front and back of the same non-woven fabric are used, which improves cleaning efficiency and ensures cleaning quality. More importantly, it makes efficient use of consumable non-woven fabric, which reduces the cost of consumables by 50%, and has outstanding energy-saving and consumption-reducing functions, achieving significant economic benefits.

[0019] 4. The photovoltaic module maintenance and cleaning device of the present invention sets an elastic element in the drive mechanism to replace the direct fastening connection between the straight arm and the fork. The flexible drive reduces the damage of the teeth to the solid weld joints. Furthermore, by setting a pressure sensor, the applied force to the weld joint can be preset and the destructive force that the poor weld joint can withstand can be recorded. This facilitates effective information feedback to the upstream welding process and improves the production efficiency and product qualification rate of the production line.

[0020] 5. The photovoltaic module inspection and cleaning device of the present invention optimizes the design of the fork into a relatively sliding split structure and sets a corresponding displacement sensor at the upper end. On the one hand, the vertical sliding makes the contact between the fork and the solder joint a soft contact. On the other hand, the vertical movement distance can determine whether to perform a toggle action, reducing damage to the wiring solder joint and effectively improving the detection efficiency.

[0021] 6. The photovoltaic module inspection and cleaning device of the present invention, by setting up a linkage cold solder joint repair mechanism on the basis of the cold solder joint detection unit, enables the detected cold solder joints to be repaired in a timely manner, avoiding the problem of low efficiency caused by the whole photovoltaic module being removed for repair, and further improving the production efficiency of the production line.

[0022] 7. The photovoltaic module inspection and cleaning device of the present invention, by setting probes in the inspection module for detecting the continuity of diodes in the junction box, moves the inspection process of diodes in the photovoltaic panel junction box forward, realizing the simultaneous detection of cold solder joints and diodes, avoiding the cumbersome process of multiple rework and modification caused by inspection one by one.

[0023] 8. The photovoltaic module maintenance and cleaning device of the present invention optimizes the design of the driving mechanism of the side wiping drum and the bottom wiping drum into an integrated structure, which improves the synchronization of the rotation of the non-woven fabric on the two drums, while making the overall structure of the device more compact and effectively reducing the cost of the device.

[0024] 9. The photovoltaic module maintenance and cleaning device of the present invention, by adding a blowing component, blows the edges and corners of the photovoltaic panel with high-pressure airflow before wiping and cleaning, thereby removing contaminants such as colloids dripping from the edges and corners of the photovoltaic panel, which can effectively improve the cleaning quality. Attached Figure Description

[0025] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the overall structure of the photovoltaic module maintenance and cleaning device of the present invention; Figure 2 This is a schematic diagram of the rear-side structure of the main display mechanism of the photovoltaic module maintenance and cleaning device of the present invention; Figure 3 This is a schematic diagram of the front side structure of the main display mechanism of the photovoltaic module maintenance and cleaning device of the present invention; Figure 4 This is a schematic diagram of the maintenance module of the present invention; Figure 5 for Figure 4 A partially enlarged structural diagram; Figure 6 This is a schematic diagram of the structure of a single inspection component in the maintenance module of the present invention; Figure 7 This is a schematic diagram of the inspection mechanism of the present invention; Figure 8 This is a schematic diagram of the connection structure between the shift fork and the conductive block of the present invention; Figure 9 This is another schematic diagram of the connection structure between the shift fork and the conductive block of the present invention; Figure 10 This is a schematic diagram of the clamping mechanism of the present invention; Figure 11 This is a schematic diagram of the cleaning module of the present invention; Figure 12 This is a schematic diagram of the main structure of the cleaning module of the present invention from the front view. Figure 13 This is a schematic diagram of the main structure of the cleaning module of the present invention from the rear view. Figure 14 A schematic diagram of the main structure of the cleaning module of the present invention, which includes a blowing component; Figure 15 This is a schematic diagram from another perspective showing the main structure of the cleaning module of the present invention, which includes a blowing component. Detailed Implementation

[0026] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0027] Example 1 This embodiment provides a photovoltaic module maintenance and cleaning device, referring to... Figure 1-15 As shown, the main components include a frame 1 for supporting various mechanisms, a maintenance module 2 for inspecting and repairing junction boxes on photovoltaic modules, and a cleaning module 3 for wiping away excess adhesive and other contaminants from the edges and corners of photovoltaic modules.

[0028] Reference Figure 1-3As shown, frame 1 includes a frame body 11 and a material conveying mechanism 12. The frame body 11 is a rectangular frame structure composed of crossbeams, columns, and reinforcing beams, and is equipped with adaptable structures for the installation of various mechanisms. The material conveying mechanism 12 is located inside the frame body 11 and mainly consists of a conveyor belt and a conveyor drive mechanism. The two sides of the photovoltaic panels of the photovoltaic module are supported on the conveyor belt. The conveyor drive mechanism transports the photovoltaic modules from the inlet of the frame body 11 to a predetermined position inside the frame body 11 and from the outlet of the frame body 11.

[0029] Reference Figure 4-10 As shown, the inspection module 2 includes a solder joint detection unit for detecting whether the solder joints inside the junction box on the photovoltaic module are faulty. The solder joint detection unit mainly includes a detection mechanism 21, a clamping mechanism 22, a support frame 23, and a lifting mechanism 24. The detection mechanism 21 mainly includes a shift fork 211, a conductive block 212, and a first drive unit 213. The overall structure of the shift fork 211 can be a rod, a plate, or a column. In this embodiment, the shift fork 211 is described as a column structure. The lower end of the shift fork 211 forms a wedge-shaped shift tooth 2110. The top of the shift tooth 2110 is used to contact the solder joint and perform a shifting action on the solder joint. In a preferred embodiment, there are two shift teeth 2110 at the lower end of the shift fork 211, which are arranged opposite each other and spaced apart by a predetermined distance. When two teeth 2110 are provided at the lower end of the same fork 211, the detection of the solder joints on both sides of the ribbon cable in the junction box to be inspected can be achieved by driving the fork 211 to move left and right, thus improving the detection efficiency. The conductive block 212 is a structure made of metals such as copper, aluminum, and iron. The conductive block 212 is connected to the inner surface of the teeth 2110. The inner surface of the teeth 2110 refers to the side of the teeth 2110 that moves the solder joint after contacting it. The connection of the conductive block 212 to the inner surface of the teeth 2110 includes the entire conductive block 212 being located on the inner surface of the teeth 2110, as well as a portion of the conductive block 212 being located on the inner surface of the teeth 2110. When the lower end of the shift fork 211 is provided with two opposing teeth 2110, the structure of the conductive block 212 is preferably an L-shaped plate. The vertical structural plate of the conductive block 212 is attached to the side panel of the shift fork 211, and its horizontal structural plate is located between the teeth 2110.

[0030] The first drive unit 213 mainly includes a first drive motor 2131 and a drive arm 2132. (Refer to...) Figure 7-9As shown, in this embodiment, the drive arm 2132 is a horizontal D-shaped structure, including a semi-circular arc arm 21322 and a straight arm 21321 connected to the open side of the arc arm 21322. The drive shaft of the first drive motor 2131 is drivenly connected to the arc arm 21322. The upper end of the shift fork 211 is connected to the straight arm 21321 and moves with the horizontal movement of the straight arm 21321. The drive arm 2132 adopts a horizontal D-shaped structure, which can easily drive the shift fork 211 to move horizontally in both left and right directions. The structure is simple, reliable, and stable in operation. In this embodiment, the first drive unit 213 also includes a sliding support block 2135 with an overall L-shaped structure. The first drive motor 2131 sits on the horizontal structural block of the sliding support block 2135. The vertical structural block of the sliding support block 2135 is provided with a cross-shaped protrusion 21351, and the shift fork 211 is engaged with the horizontal plate of the protrusion 21351 through a slot on the main body. At this point, the protrusion 21351 can both support the shift fork 211 and provide a track for the shift fork 211 to slide. With this structural design, there is no need to design other support structures for the shift fork 211. The structure is compact and can improve the accuracy of the welding point tossing action.

[0031] The support frame 23 mainly includes a first platform 231, a second platform 232, a third platform 233 for load-bearing, and support columns 234 for support. The first platform 231, second platform 232, and third platform 233 are all plate structures, connected parallel to each other and spaced at predetermined intervals from bottom to top to the support columns 234, forming a multi-layered platform structure. The first platform 231 is located at the bottom and is securely connected to the support columns 234. The lifting mechanism 24 includes a lifting drive motor 241 and a support frame 242. The third platform 233 is suspended from the support frame 242 via the lifting drive motor 241. The two ends of the support frame 242 are slidably connected to the two side beams above the frame body 11. (Refer to...) Figure 4As shown, this embodiment provides a structure that simultaneously drives multiple sets of support frames 23 via a lifting mechanism. Multiple sets of support frames 23 are slidably connected to the same sliding crossbeam. The sliding crossbeam is driven and connected to a support frame 242 via a lifting drive motor 241, thereby enabling the multiple sets of support frames 23 to move synchronously up and down. Each set of support frames 23 is driven horizontally along the slide by an independent drive cylinder. Correspondingly, each set of support frames 23 is equipped with a detection mechanism 21 and a clamping mechanism 22. The detection mechanism 21 is mounted on a first platform 231, specifically a first drive motor 2131 connected to the first platform 231, with a drive arm 2132 located above the first drive motor 2131. The first platform 231 has through holes for the prying teeth 2110 to pass through. Preferably, two sets of detection mechanisms 21 are connected and mounted on the first platform 231, and the two sets of D-shaped drive arms 2132 are arranged with their openings facing each other on the first platform 231, with the two prying forks 211 spaced apart by a predetermined distance. By setting two sets of inspection mechanisms 21 on the first platform 231, the detection efficiency for poor solder joints in junction boxes can be effectively improved. Furthermore, the two sets of inspection mechanisms 21 are connected to the positioning slide plate, and the distance between them can be adjusted to accommodate the different distances between the solder joints on both sides of the junction box in different models.

[0032] The clamping mechanism 22 mainly includes a second drive motor 221 and a clamping plate 222, as shown in the figure. Figure 10As shown, two clamping plates 222 are driven to be connected to both sides of the telescopic drive shaft of the second drive motor 221, and the telescopic drive shaft drives the two clamping plates 222 to move closer or further apart. The second drive motor 221 is suspended and connected to the second platform 232, and the two clamping plates 222 are located on the opening side of the D-shaped drive arm 2132, with the teeth 2110 located between the clamping feet 2221 at the lower end of the two clamping plates 222. When the first platform 231 is provided with two sets of detection mechanisms 21, the two clamping plates 222 are located between the D-shaped openings of the two sets of drive arms 2132, and the two sets of teeth 2110 on the two sets of detection mechanisms 21 are located between the clamping feet 2221 at the lower end of the two clamping plates 222. In this embodiment, the second platform 232 is slidably connected to the support column 234 and suspended and connected to the third platform 233 by multiple hanging rods 235, and the second platform 232 and the hanging rods 235 are slidably connected. By configuring the second platform 232 to float up and down along the supporting column 234 and the hanger 235, and using the hanger 235 to limit the minimum height of the second platform 232, the clamping feet 2221 of the clamping plate 222 can freely contact the junction box under inspection, achieving soft contact and avoiding damage to the junction box caused by hard contact. The clamping plate 222 is a long, strip-shaped I-beam structure plate, with its upper end connected to the telescopic drive shaft of the second drive motor 221, and its lower end equipped with clamping feet 2221 for holding the junction box under inspection. The teeth 2110 are located between the two opposing clamping feet 2221. In a preferred embodiment, first rubber blocks 2222 are respectively connected to the opposing surfaces of the two clamping feet 2221, and the first rubber blocks 2222 are used to hold the junction box under inspection. By using rubber material to hold the junction box under inspection, contact damage to the junction box is avoided. Furthermore, each clamping foot 2221 has a second rubber block 2223 on its outer side, and the lower end of the second rubber block 2223 extends below the first rubber block 2222. The height difference between the second rubber block 2223 and the first rubber block 2222 allows the second rubber block 2223 to release from the bottom of the junction box first when clamping the junction box on the photovoltaic panel. This effectively prevents the first rubber block 2222 from contacting the adhesive on the bottom of the junction box and contaminating the clamped junction box, thus preventing contamination of the outer surface of the clamped junction box.

[0033] The working principle of the solder joint detection unit in the inspection module 2 for detecting cold solder joints is as follows: the lifting drive motor 241 drives the support frame 23 to descend to the predetermined position, and the second drive motor 221 drives the two clamping plates 222 to clamp and fix the junction box to be inspected. At this time, the top of the pick tooth 2110 contacts the solder joint of the wiring inside the junction box to be inspected. The first drive motor 2131 drives the arc arm 21322 to move horizontally. The shift fork 211 moves horizontally with the straight arm 21321, and then moves the solder joint through the top of the shift tooth 2110: if the solder joint is solid, the force applied to the side of the solder joint by the top of the shift tooth 2110 cannot move the solder joint; if the solder joint is cold, the force applied to the side of the solder joint by the top of the shift tooth 2110 will make the solder joint move. The end of the wire after the solder joint is broken is lifted up by the horizontal movement of the shift tooth 2110. After the end of the wire is lifted to a predetermined height, it comes into contact with the conductive block 212 located above the shift tooth 2110. The detection equipment connected to the outside through the conductive block 212 can be used to determine that the solder joint is cold. The solder joint detection unit provided in this embodiment uses a conductive block with current conduction above the pick teeth near the solder joint. Once the end of the picked wire comes into contact with the conductive block, the solder joint condition can be confirmed. The structure is simple and the operation is convenient. It solves the problems of complex mechanism, cumbersome calculation and discrimination process and high cost caused by the use of vision equipment for solder joint detection in the prior art through physical means. It greatly improves the detection accuracy and response rate of the detection mechanism, while reducing the overall cost of the detection device.

[0034] Reference Figure 11-15 As shown, the cleaning module 3 is mainly used to clean excess adhesive and other contaminants squeezed out from the four corners of the photovoltaic panel of the photovoltaic module. It mainly includes a sliding frame 30 and cleaning units slidably connected to the sliding frame 30. Two sets of sliding frames 30 are slidably connected to the structural beams of the frame body 11, and are located on both sides of the material conveying mechanism 12. In this embodiment, each sliding frame 30 has two sets of cleaning units slidably connected to it, and the four sets of cleaning units are located at the four corners of the photovoltaic panel. (Refer to...) Figure 2-3 As shown in Figure 11, the cleaning unit includes a feeding mechanism 31 for supplying non-woven fabric for wiping and cleaning, a side wiping mechanism 32 for wiping the edges and sides of the photovoltaic panel, a guide 33 for changing the orientation of the inner and outer surfaces of the non-woven fabric, a bottom wiping mechanism 34 for wiping the bottom of the edges or corners of the photovoltaic panel, a mounting frame 37 for mounting the feeding mechanism 31, the side wiping mechanism 32, the guide 33 and the bottom wiping mechanism 34, and a slide 38 for providing sliding for the mounting frame 37.

[0035] Reference Figure 12As shown, the mounting frame 37 mainly consists of a first support plate 371, a second support plate 372, and support columns 373. The second support plate 372 and the first support plate 371 are sequentially and spaced apart from bottom to top on four support columns 373. The first support plate 371 and the second support plate 372 below it are arranged parallel vertically. In this embodiment, both the first support plate 371 and the second support plate 372 are rectangular structural plates. In some preferred embodiments, the mounting frame 37 is also provided with a lifting drive unit 374. In this case, the first support plate 371 and the support columns 373 are slidably arranged, and the main body of the lifting drive unit 374 is connected to the middle slotted structure of the second support plate 372. The end of its drive shaft is connected to the lower surface of the first support plate 371. The height of the first support plate 371 can be adjusted by the lifting drive unit 374, thereby adjusting the height of the corresponding structure connected to the first support plate 371. The slide 38 mainly includes a slide rail 381 and a displacement drive motor 382. The second support plate 372 of the mounting bracket 37 is slidably disposed on the slide rail 381. The displacement drive motor 382 drives the second support plate 372 to drive the mounting bracket 37 and the components mounted thereon to move linearly along the slide rail 381. Preferably, the mounting bracket 37 is further provided with a third support plate 375, which is connected to the support column 373 and located below the slide rail 381. With this structure, the mounting bracket 37 can be stably slid linearly on the slide rail 381.

[0036] The feeding mechanism 31 mainly consists of a support base 311 and a tray 312 rotatably connected to the support base 311. The support base 311 is fastened to the outer right angle of the first support plate 371, and the tray 312 is rotatably connected to the support column of the support base 311. The tray 312 has a receiving groove in the middle for installing and placing a non-woven fabric roll for wiping and cleaning, and the tray 312 also has an opening for the end of the non-woven fabric to extend out. When the non-woven fabric is pulled out, the non-woven fabric roll can rotate within the tray 312 to continuously supply non-woven fabric.

[0037] The side wiping mechanism 32 includes a side wiping drum 321, a side drum drive motor for driving the side wiping drum 321 to rotate, and a first pressing assembly 322 for bringing the non-woven fabric into contact with the surface of the side wiping drum 321 and rotating it with it. The side wiping drum 321 is rotatably connected to the upper surface of a first mounting plate 3711 extending outward from one side of the first support plate 371. The side wiping drum 321 and the tray 312 are located on opposite sides of the length of the first support plate 371. The body of the side drum drive motor is fastened to the lower surface of the first mounting plate 3711 and located below the side wiping drum 321. The drive shaft of the side drum drive motor extends to the first mounting plate 3711, forms a through hole, and drives the side wiping drum 321. The side wiping drum 321 rotates in a horizontal plane under the drive of the side drum drive motor. Rotation in a horizontal plane means that its rotating surface is substantially parallel to the surface of the first support plate 371. The first pressing assembly 322 mainly includes a first pressure roller 3221 and a second pressure roller 3222. Both the first pressure roller 3221 and the second pressure roller 3222 are short cylindrical structures, located on the sides of the side wiping drum 321. Preferably, to increase the length of the non-woven fabric attached to the surface of the side wiping drum 321 and improve the wiping cleaning effect, the first pressure roller 3221 and the second pressure roller 3222 are arranged adjacent to each other on the sides of the side wiping drum 321. The first pressure roller 3221 and the second pressure roller 3222 are connected to the first mounting plate 3711 by a fixed and rotating manner. Preferably, the first pressing assembly 322 also includes a first telescopic unit 3223, which includes a first telescopic motor 32231 for driving and a first support frame 22232. The first pressure roller 3221 and the second pressure roller 3222 are rotatably connected to one end of the first support frame 32232. The other end of the first support frame 32232 is driven by the first telescopic motor 32231, which is connected to the upper surface of the first support plate 371. The first telescopic motor 32231 drives the first support frame 32232 to move the first pressure roller 3221 and the second pressure roller 3222 closer to or further away from the side of the rotating drum 321 to wipe its surface.

[0038] The guide member 33 is a plate structure with a guide groove 331 in its middle. The guide groove 331 is rectangular in shape, and its edges are smoothed to reduce damage to the non-woven fabric passing through it. The guide member 33 is suspended and connected to the lower surface of the second support plate 372 on one side, with the guide groove 331 located on the outside of the second support plate 372. The guide member 33 connected to the second support plate 372 and the side wiping rotary cylinder 321 are located on the same side below the mounting bracket 37 along its length.

[0039] The bottom wiping mechanism 34 mainly includes a bottom wiping drum 341, a bottom drum drive motor for rotating the bottom wiping drum 341, and a second pressing assembly 342 that brings the non-woven fabric into contact with the surface of the bottom wiping drum 341 and causes it to rotate with the drum. The bottom wiping drum 341 is rotatably connected to the outside of the first mounting plate 3711 via a support structure, and the bottom drum drive motor drives the bottom wiping drum 341 to rotate. The central axis of the connected bottom wiping drum 341 is perpendicular to the central axis of the side wiping drum 321, and the rotating surface of the bottom wiping drum 341 is a vertical surface, which means that the rotating surface of the bottom wiping drum 341 is basically perpendicular to the plane of the first support plate 371. The second pressing assembly 342 mainly includes a third pressure roller 3421 and a fourth pressure roller 3422. Both the third pressure roller 3421 and the fourth pressure roller 3422 are short cylindrical structures, located below the bottom wiping drum 341. Similarly, to increase the length of the non-woven fabric attached to the surface of the bottom wiping drum 341 and improve the wiping cleaning effect, the third pressure roller 3421 and the fourth pressure roller 3422, located below the bottom wiping drum 341, are arranged adjacent to each other. The third pressure roller 3421 and the fourth pressure roller 3422 can be connected to the first mounting plate 3711 by a fixed and rotating method, for example, by a support rod. Preferably, the second pressing assembly 342 further includes a second telescopic unit 3423, which includes a second telescopic motor 34231 for driving and a second support frame 34232. The third pressure roller 3421 and the fourth pressure roller 3422 are rotatably connected to one end of the second support frame 34232. The other end of the second support frame 34232 is driven by the second telescopic motor 34231. The second support frame 34232 and the second telescopic motor 34231 are fixedly connected to the second mounting plate 3712, which is a structural plate connected to the side of the first support plate 371. The second telescopic motor 34231 drives the second support frame 34232 to move the third pressure roller 3421 and the fourth pressure roller 3422 closer to or further away from the bottom surface to wipe the surface of the rotating drum 341.

[0040] The working principle of the cleaning unit in this embodiment is as follows: The non-woven fabric roll for cleaning is rotatably connected to the receiving cavity of the tray 312, and the end of the rolled non-woven fabric is led out from the notch opened in the tray 312. The end of the non-woven fabric pulled out from the tray 312 enters from the side of the first pressure roller 3221 and wraps around the circumference of the side wiping drum 321, and then its end is led out from the side of the second pressure roller 3222. The end of the non-woven fabric led out from the side of the second pressure roller 3222 is pulled downward to the position of the guide member 33. The end of the non-woven fabric passes through the guide groove 331 from bottom to top from the edge outside the guide groove 331 and is pulled upward. At this time, the inner surface of the non-woven fabric that contacts the circumference of the side wiping drum 321 is flipped into the outer surface, while the outer surface that contacts and wipes the edge of the photovoltaic panel to be cleaned is flipped into the inner surface. After being pulled upwards to a certain height, the non-woven fabric end enters through the third pressure roller 422 and wraps around the circumference of the bottom wiping drum 341. At this time, the outer surface that was in contact with and wiped the edge of the photovoltaic panel to be cleaned is flipped into the inner surface and comes into contact with the circumference of the bottom wiping drum 341. Meanwhile, the uncontaminated inner surface that was in contact with the circumference of the side wiping drum 321 is flipped into the outer surface and comes into contact with the bottom edge of the photovoltaic panel for wiping and cleaning. The wiping and cleaning of the sides and bottom of the photovoltaic panel's corners is performed simultaneously. This is achieved by the displacement drive motor 382 driving the mounting bracket 37 to slide on the slide rail 381 and by the slide rail 381 sliding on the crossbeam of the frame body 11, thereby realizing the wiping operation of the sides and bottom of the photovoltaic panel's corners.

[0041] The cleaning unit provided in this embodiment, by offsetting the side wiping drum and the bottom wiping drum and setting the drum bodies at a 90° angle, and by using a guide to flip the wiping surfaces of the non-woven fabric wiping the sides and bottom, not only can the sides and bottom be wiped clean simultaneously, but also the front and back of the same non-woven fabric are used, which improves cleaning efficiency and ensures cleaning quality. More importantly, it makes efficient use of consumable non-woven fabric, which reduces the cost of consumables by 50%, with outstanding energy-saving and consumption-reducing functions, and achieves significant economic benefits.

[0042] Example 2 This embodiment 2 is based on embodiment 1. An elastic element is installed in the first drive unit to replace the direct fastening connection between the straight arm and the shift fork. Flexible drive reduces damage to the weld joints caused by the shift teeth. Furthermore, by installing a pressure sensor, the applied force to the weld joint is preset while simultaneously recording the destructive force that the weak weld joint can withstand. This facilitates effective feedback to upstream welding processes, improving production line efficiency and product qualification rate. Specifically: Reference Figure 7As shown, the first drive unit 213 also includes elastic elements 2133, which are compression springs in this embodiment. Two elastic elements 2133 are sleeved on the straight arm 21321 and located on both sides of the shift fork 211. One end of the elastic element 2133 is fastened to the end face of the arc arm 21322, and the other end is connected to the side of the shift fork 211. The elastic element 2133 located between the ends of the shift fork 211 and the arc arm 21322 is in a compressed state. The shift fork 211 is kept in a balanced state by the two elastic elements 2133 located on both sides. At this time, the connection between the shift fork 211 and the straight arm 21321 changes from a fixed connection to a sliding connection. After the elastic elements 2133 are provided on the first drive unit 213, when the first drive motor 2131 drives the arc arm 21322 to move horizontally left and right, the shift fork 211, which is slidably connected to the straight arm 21321, is displaced horizontally by the elastic force applied by the elastic elements 2133. By adjusting the degree of compression of the elastic element 2133, the force driving the shift fork 211 can reach a predetermined range, thereby ensuring that the force applied to the weld point after the shift tooth 2110 contacts the weld point to be inspected reaches a predetermined range, thus avoiding damage or destruction to the actual weld point under hard contact.

[0043] Furthermore, the first drive unit 213 also includes pressure sensors 2134. There are two sets of pressure sensors 2134, each sleeved onto the straight arm 21321. An elastic element 2133 is pressed between the pressure sensors 2134 and the shift fork 211, which remains slidably connected to the straight arm 21321. The pressure sensors 2134 can directly obtain the horizontal thrust applied by the elastic element 2133 to the shift fork 211. This allows for adjustment of the elastic force of the elastic element 2133 according to preset requirements, and also enables real-time acquisition of the destructive force when a weak weld point is dislodged, facilitating effective feedback to the upstream welding process.

[0044] Example 3 This embodiment 3 is based on embodiment 1 or 2. By optimizing the design of the shift fork into a relatively sliding split structure and installing a corresponding displacement sensor at the upper end, it achieves two advantages: firstly, vertical sliding ensures soft contact between the shift teeth and the solder joint; secondly, the vertical movement distance determines whether a shifting action is required, reducing damage to the cable solder joint and effectively improving detection efficiency. Specifically: Reference Figure 8-9As shown, the shift fork 211 mainly consists of a fixed slider 2111 and a movable slider 2112. The fixed slider 2111 is a rectangular prism with a slot on one side that slides with the protrusion 21351, and a vertically open groove with a convex cross-section on the opposite side. The movable slider 2112 has a vertically sliding strip with a convex cross-section. The movable slider 2112 is slidably connected to the vertical groove of the fixed slider 2111 via the vertical strip, achieving a sliding connection. The fixed slider 2111 is suspended from the straight arm 221. When the elastic element 2133 is present, the fixed slider 2111 is slidably connected to the straight arm 221. The lower end of the movable slider 2112 forms a shift tooth 2110, while its upper end has an L-shaped hook 1121. The horizontal plate of the L-shaped hook 1121 is engaged with the upper end face of the fixed slider 2111. This structural design allows the movable slider 2112 to slide upward automatically after the tip of the pick tooth 2110 contacts the solder joint to be inspected, thus avoiding excessive pressure on the solder joint and causing damage.

[0045] Furthermore, a displacement sensor 2113 is provided at the upper end of the fixed slider, and the displacement sensor 2113 is located on one or both sides of the hook head 1121. When the pick tooth 2110 contacts the welding point, the movable slider 2112 will slide upward due to the contact with the welding point. When the displacement sensor 2113 detects that the movable slider 2112 has moved upward a predetermined distance, it can determine that the contact is in place, and then the welding point agitation detection will begin.

[0046] Example 4 This embodiment 4 is formed based on any one of embodiments 1-3. By setting up a linked solder joint repair mechanism on the basis of the solder joint detection unit, the detected solder joints can be repaired in a timely manner, avoiding the low efficiency problem caused by repairing after the entire photovoltaic module is removed, and further improving production efficiency. Specifically: Reference Figure 5 As shown, the cold solder joint repair unit includes a cold solder joint repair mechanism 25 and a lifting drive assembly 26. The lifting drive assembly 26 includes a lifting drive cylinder 261 and a drive plate 262. The lifting drive cylinder 261 is fixedly connected to the side of the support frame 23. The lifting drive cylinder 261 drives the drive plate 262 to move up and down. The welding assembly 251 and the weld point pressing assembly 252 are connected to the drive plate 262.

[0047] The cold solder joint repair mechanism 25 includes a welding assembly 251 and a solder joint crimping assembly 252. The welding assembly 251 is used for re-welding and repairing the wire end, and includes a welding torch 2511 and a wire feed rod 2512. The solder joint crimping assembly 252 presses down the wire end that has been lifted up by the welding torch. The solder joint crimping assembly 252 includes a pressure plate 2521, a reset component 2522, a drive rod 2523, and a guide seat 2524. The guide seat 2524 has an L-shaped structure, with one structural block connected to the drive plate 262, and the other structural block having a guide hole. The lower end of the drive rod 2523 slides through the guide hole and is slidably connected to the guide seat 2524, and one end of the pressure plate 2521 is connected to the lower end of the drive rod 2523. The reset component 2522 is sleeved on the drive rod 2523 and pressed between the pressure plate 2521 and the guide seat 2524. The pressure plate 2521 and the wire feed rod 2512 are located on both sides of the welding torch 2511.

[0048] When the inspection mechanism 21 detects a faulty solder joint in the junction box, the photovoltaic module is moved to the faulty solder joint repair station. The lifting drive cylinder 261 drives the welding component 251 and the solder joint pressing component 252 to move down through the drive plate 262. During the downward movement, the pressure plate 2521 first contacts the end of the lifted wire and presses it down to the welding point. After moving down to a predetermined distance, the end of the wire is pressed into the welding point by the pressure plate under the action of the reset component 2522. The welding gun 2511 re-welds the welding point with the help of the wire feeder 2512 to feed out the welding wire, thus completing the detection and repair of the faulty solder joint.

[0049] By setting up a linked welding repair mechanism on the basis of the cold solder joint detection mechanism, the detected cold solder joints can be repaired in a timely manner, avoiding the low efficiency caused by the whole photovoltaic module being removed before repair, and further improving the production efficiency of the production line.

[0050] Example 5 This embodiment 5 is based on any one of embodiments 1-4. By setting a probe in the maintenance module to detect the continuity of diodes in the junction box, the diode testing process in the photovoltaic panel junction box is moved forward, realizing simultaneous testing of cold solder joints and diodes, avoiding the cumbersome process of multiple rework caused by testing one by one. Specifically: Reference Figure 7As shown, the inspection module 2 also includes a probe 27, which is a rod-shaped structure. The upper part of the rod is connected to the side of the shift fork 211. The probe 27 can be fixed to the main structure of the shift fork 211 using a fixing block or similar structure. In this embodiment, when the conductive block 212 is an L-shaped structure, the probe 27 and the vertical structural plate of the conductive block 212 are located on opposite sides of the shift tooth 2110. The probe portion of the lower end of the probe 27, which contacts the electrical connection piece of the diode, is located on the outer side of the shift tooth 2110. In this embodiment, the end face of the probe portion of the probe 27 is located below the top of the shift tooth 2110. Of course, the position of the probe portion of the probe 27 on the shift fork 211 can be adjusted according to the specific conditions inside the junction box to be inspected, so that the specific height of the probe portion is adapted to the position of the diode.

[0051] The lifting drive motor 241 drives the support frame 23 to descend to a predetermined position, and the second drive motor 221 drives the two clamping plates 222 to clamp and fix the junction box to be inspected. At this time, the probe part of the probe 27 contacts the connecting piece of the diode inside the junction box, which is used for electrical connection with the ribbon cable, so as to detect the continuity of the diode. It should be noted that when the tooth 2110 detects whether the solder joint is cold by moving the tooth 2110, the horizontal movement distance of the fork 211 is basically within 2mm. When the probe 27 moves horizontally with the fork 211, there is some friction between it and the electrical connecting piece of the diode due to contact, but this friction does not affect the detection of the probe 27 or the continuity performance of the diode electrical connecting piece.

[0052] Example 6 This embodiment 2 is based on any one of embodiments 1-5. By optimizing the drive mechanism of the side wiping drum and the bottom wiping drum into an integrated structure, the synchronicity of the nonwoven fabric rotating on the two drums is improved, making the overall structure of the device more compact and effectively reducing the cost of the device. Specifically: Reference Figure 15As shown, a rotary drum drive mechanism 35 is provided to simultaneously drive the synchronous rotation of the side wiping rotary drum 321 and the bottom wiping rotary drum 341. The rotary drum drive mechanism 35 mainly includes a rotary drum drive motor 351, a main drive shaft 352, and a driven shaft 353, and also includes a housing 354 for mounting. The housing 354 includes a vertical housing 3541 and a horizontal housing 3542, both of which are rectangular structures. The vertical housing 3541 is suspended and connected to the lower surface of the first mounting plate 3711, and the rotary drum drive motor 351 is disposed inside the vertical housing 3541. The horizontal housing 3542 lies horizontally on the upper surface of the first mounting plate 3711, the main drive shaft 352 is arranged perpendicular to the first mounting plate 3711, and the driven shaft 353 is arranged parallel to the first mounting plate 3711. The lower end of the main drive shaft 352 is rotatably connected to the rotary drum drive motor 351, and its upper end is rotatably connected to the shaft of the side wiping rotary drum 321, which is located on the upper surface of the horizontal housing 3542. In this embodiment, the driven shaft 353 is a T-shape formed by two drive shafts. One shaft of the driven shaft 353 is rotatably connected to the middle of the main drive shaft 352 via two meshing bevel gears. The bottom wiping rotary drum 341 is rotatably connected to the shaft head of the driven shaft 353 and is located on the side of the horizontal housing 3542. A single rotary drum drive motor 351 can simultaneously drive both the side wiping rotary drum 321 and the bottom wiping rotary drum 341 via the main drive shaft 352 and the driven shaft 353.

[0053] Example 7 This embodiment 7 is formed based on any one of embodiments 1-6. By adding a blowing component to the cleaning unit, a high-pressure airflow is used to blow away contaminants such as colloids adhering to the edges of the photovoltaic panel before wiping and cleaning, effectively improving the cleaning quality. Specifically: Reference Figure 14-15As shown, the purging assembly 36 is mounted on the mounting bracket 37 and located outside the bottom wiping mechanism 34. The purging assembly 36 mainly includes a bracket 361 and a blowing rod 362. The bracket 361 mainly consists of a vertical plate and a column connected to the vertical plate. One end of the vertical plate is connected to the side of the first mounting plate 3711, and the other end is located outside the first mounting plate 3711 and is suspended. The lower end of the column is connected to the vertical plate, and its upper end is used to support and connect the blowing rod 362. The blowing rod 362 is horizontal, and its central axis is parallel to the central axis of the bottom wiping rotating cylinder 341. The blowing rod 362 is located outside the bottom wiping rotating cylinder 341. The blowing rod 362 is a hollow rod. One end is used to connect with the external high-pressure gas, and the other end is provided with an air hole 3621. The external high-pressure gas is blown into the corners of the photovoltaic panel to be cleaned through the air hole 3621. Preferably, the purging assembly 36 is further provided with a collection box 363, which is connected to the upright plate of the bracket 361 and located below the air hole 3621, for collecting the colloids and other contaminants that are blown away.

[0054] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0055] Specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A photovoltaic module maintenance and cleaning device, characterized in that, include: The frame (1) includes a frame body (11) and a material conveying mechanism (12). The material conveying mechanism (12) is located inside the frame body (11) and the material conveying mechanism (12) delivers the photovoltaic module to be inspected from the inlet of the frame body (11) to a predetermined position. The inspection module (2) is suspended and connected to the upper structural beam of the frame body (11). It includes a weld point detection unit. The weld point detection unit includes a detection mechanism (21), a clamping mechanism (22), a support frame (23), and a lifting mechanism (24). The detection mechanism (21) and the clamping mechanism (22) are installed on the support frame (23). The detection mechanism (21) includes a fork (211), a conductive block (212), and a first drive unit (213). The lower end of the fork (211) is provided with a tooth (2110). The conductive block (212) is connected to the inner surface of the tooth (2110). The inner surface of the tooth (2110) refers to the side of the direction in which the tooth (2110) moves after contacting the weld point to be inspected. The upper end of the fork (211) is driven and connected to the first drive unit (213). The lifting mechanism (24) includes a lifting drive motor (241) and a support frame (242). The support frame (23) is suspended and connected to the support frame (242) by the lifting drive motor (241). The lifting drive motor (241) drives the support frame (23) to descend to a predetermined position. The clamping mechanism (22) is used to clamp the junction box to be inspected. The top of the tooth (2110) is used to contact the wiring solder joint inside the junction box to be inspected. The first drive unit (213) is used to drive the fork (211) to move horizontally. The top of the tooth (2110) is used to move the solder joint. When there is a poor solder joint, the end of the solder wire that is moved and lifted by the tooth (2110) contacts the conductive block (212) and conducts a connection. The cleaning module (3) includes a sliding frame (30) and a cleaning unit slidably connected to the sliding frame (30). The two sets of sliding frames (30) are slidably connected to the structural beams of the frame body (11). The two sets of sliding frames (30) are located on both sides of the material conveying mechanism (12). The cleaning unit is used to wipe and clean the edges and corners of the photovoltaic panel. The first drive unit (213) includes a first drive motor (2131), a drive arm (2132), and elastic elements (2133). The drive arm (2132) is horizontally D-shaped and includes a straight arm (21321) and an arc arm (21322). The first drive motor (2131) drives and connects to the arc arm (21322). The shift fork (211) is slidably connected to the straight arm (21321). The two elastic elements (2133) are respectively sleeved on the straight arm (21321). The elastic elements (2133) are pressed between the shift fork (211) and the end of the arc arm (21322).

2. The photovoltaic module maintenance and cleaning device according to claim 1, characterized in that, The support frame (23) includes multiple support columns (234), and a first platform (231), a second platform (232) and a third platform (233) arranged at intervals from bottom to top on the support columns (234). The second platform (232) is suspended and connected to the third platform (233) by a hanger (235). The second platform (232) is slidably connected to the support columns (234). The first drive unit (213) is connected to the first platform (231). The first platform (231) is provided with a through hole for the prying teeth (2110) to pass through. The clamping mechanism (22) includes a second drive motor (221) and clamping plates (222). The second drive motor (221) is suspended and connected to the second platform (232). The two clamping plates (222) are driven and connected to both sides of the telescopic shaft of the second drive motor (221). The lower end of the clamping plate (222) is a clamping foot (2221). The pick tooth (2110) is located between the two clamping feet (2221). The two clamping feet (2221) are used to clamp the junction box to be inspected.

3. The photovoltaic module maintenance and cleaning device according to claim 1, characterized in that, The shift fork (211) includes a fixed slider (2111) and a movable slider (2112). The fixed slider (2111) is connected to the drive arm (2132). The movable slider (2112) is vertically slidable along the fixed slider (2111). The shift tooth (2110) is located at the lower end of the movable slider (2112). The upper end of the movable slider (2112) is provided with a hook (21121). The hook (21121) is engaged with the upper end of the fixed slider (2111). A displacement sensor (2113) is provided at the upper end of the fixed slider (2111). The displacement sensor (2113) is used to obtain the distance that the hook (21121) moves upward.

4. The photovoltaic module maintenance and cleaning device according to claim 1, characterized in that, The maintenance module (2) also includes a cold solder joint repair unit, which includes a cold solder joint repair mechanism (25) and a lifting drive assembly (26). The weld repair mechanism (25) includes a welding component (251) and a weld crimping component (252). The lifting drive component (26) includes a lifting drive cylinder (261) and a drive plate (262). The lifting drive cylinder (261) is fixedly connected to the side of the support frame (23). The lifting drive cylinder (261) drives the drive plate (262) to move up and down. The welding component (251) and the weld crimping component (252) are connected to the drive plate (262). The weld crimping component (252) presses down the wire end that has been lifted up by the push. The welding component (251) is used for re-welding and repairing the wire end.

5. The photovoltaic module maintenance and cleaning device according to claim 1, characterized in that, The inspection module (2) also includes a probe (27), the upper part of which is connected to the side of the fork (211), and the lower end of which is located outside the tooth (2110). The probe (27) is used to make contact with the connecting piece of the diode that is electrically connected to the ribbon cable in the junction box to be inspected.

6. The photovoltaic module maintenance and cleaning device according to any one of claims 1-5, characterized in that, The cleaning unit includes: The feeding mechanism (31) is used to supply nonwoven fabric for cleaning. The side wiping mechanism (32) is located on the side of the feeding mechanism (31). The side wiping mechanism (32) includes a side wiping drum (321). The non-woven fabric output by the feeding mechanism (31) rotates with the side wiping drum (321). The outer surface of the rotating non-woven fabric is attached to the side edge of the photovoltaic module to be cleaned for cleaning. Guide (33), the guide (33) is located below the side of the side wiping drum (321), the non-woven fabric that rotates out of the side wiping drum (321) is wrapped around the guide (33), and the outer surface of the non-woven fabric faces the opposite direction after passing through the guide (33); The bottom wiping mechanism (34) includes a bottom wiping rotating cylinder (341), which is located below the side wiping rotating cylinder (321). The axis of the bottom wiping rotating cylinder (341) is perpendicular to the central axis of the side wiping rotating cylinder (321). The outer surface of the non-woven fabric that rotates out through the guide (33) is attached to the surface of the bottom wiping rotating cylinder (341) and rotates synchronously. The inner surface of the rotating non-woven fabric is attached to the bottom edge of the photovoltaic module to be cleaned for cleaning. Mounting frame (37), the feeding mechanism (31), the side wiping mechanism (32), the guide (33) and the bottom wiping mechanism (34) are mounted on the mounting frame (37); The slide (38) includes a slide rail (381) and a displacement drive motor (382). The mounting bracket (37) is slidably connected to the slide rail (381), and the displacement drive motor (382) drives the mounting bracket (37) to move linearly along the slide rail (381).

7. The photovoltaic module maintenance and cleaning device according to claim 6, characterized in that, The side wiping mechanism (32) further includes a first pressing assembly (322), which includes a first pressure roller (3221), a second pressure roller (3222), and a first telescopic unit (3223). The first pressure roller (3221) and the second pressure roller (3222) are arranged side by side at intervals on the side of the side wiping drum (321). The first telescopic unit (3223) drives the first pressure roller (3221) and the second pressure roller (3222) to move horizontally synchronously. The non-woven fabric is wrapped around the surface of the side wiping drum (321) from the first pressure roller (3221) and then wrapped out through the second pressure roller (3222). The bottom wiping mechanism (34) further includes a second pressing assembly (342), which includes a third pressure roller (3421), a fourth pressure roller (3422), and a second telescopic unit (3423). The third pressure roller (3421) and the fourth pressure roller (3422) are arranged side by side at intervals below the bottom wiping drum (341). The second telescopic unit (3423) drives the third pressure roller (3421) and the fourth pressure roller (3422) to move vertically synchronously. The nonwoven fabric is wrapped around the surface of the bottom wiping drum (341) from the third pressure roller (3421) and then wrapped out through the fourth pressure roller (3422).

8. The photovoltaic module maintenance and cleaning device according to claim 7, characterized in that, The cleaning unit also includes a rotary drum drive mechanism (35), which includes a rotary drum drive motor (351), a main drive shaft (352), and a driven shaft (353). One end of the main drive shaft (352) is connected to the rotary drum drive motor (351), and the other end of the main drive shaft (352) is connected to the side wiping rotary drum (321). One end of the driven shaft (353) is rotatably connected to the middle of the main drive shaft (352), and the bottom wiping rotary drum (341) is rotatably connected to the driven shaft (353).

9. The photovoltaic module maintenance and cleaning device according to claim 6, characterized in that, The cleaning unit also includes a blowing assembly (36), which is located on the outer side of the bottom wiping mechanism (34). The blowing assembly (36) includes a bracket (361) and a blowing rod (362). The blowing rod (362) is connected to the bracket (361) and has an air hole (3621). After the external high-pressure gas is connected to the blowing rod (362), the high-pressure airflow is sent out through the air hole (3621) and blown towards the edge of the photovoltaic module to be cleaned.

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