A photovoltaic panel welding device

Abstract

The present invention discloses a welding device for a photovoltaic panel, which includes a welding and cutting device, a clamping device, a welding device, and a conveying device. The welding and cutting device is arranged upstream of the conveying device, and the clamping device is arranged above the conveying surface of the conveying device. The welding and cutting device includes a solder tape supply unit and a pulling device. The solder tape supply unit is used for conveying the solder tape, and the pulling device includes a pulling housing, a pressing cylinder, a pressing plate support frame, and a pressing plate. In the present invention, the pressing cylinder drives the pressing plate to move towards or away from the pressing plate support frame, causing the pressing plate to press or release the solder tape against the pressing plate support frame. The clamping device can slide relative to the pulling device, causing the solder tape to be tightened, straightening the solder tape before cutting the solder tape, preventing the phenomenon of multiple points of virtual soldering during welding, buffering the pressure of the pressing belt wheel through a spring, reducing damage to the battery panel, and also preventing the solder tape from being misaligned during subsequent welding.

Description

Technical Field

[0001] The present invention relates to the technical field of solar panel welding, and more specifically to a photovoltaic solar panel welding device. Background Art

[0002] Photovoltaic panel welding technology is a method of connecting photovoltaic ribbons to single-cell batteries to connect the cells in series or in parallel, thereby solving the problem that simple topological connections cannot meet the needs of high-intensity, high-power power generation scenarios. It is an important photovoltaic module production technology.

[0003] The solar panel welding production line has important theoretical research value and practical application value. Since the 20th century, the global photovoltaic industry has shown a rapid and rapid development trend. All this rapid development is inseparable from the support of the solar panel welding production line. However, the following outstanding problems still exist in the field of solar panel welding production line equipment:

[0004] (1) The soldering tape is not laid neatly, the soldering is poor, and the flux is not evenly applied;

[0005] (2) The production rate of existing solar panel welding production lines needs to be improved;

[0006] In view of the current status of this equipment, domestic and foreign scholars have conducted a lot of design research work in the structural process and welding process of the core components of the welding production line (i.e. welding equipment), which has promoted the improvement of automated production efficiency and production process level to a certain extent. However, there are still outstanding problems such as production quality and processing production efficiency that need to be further enhanced. However, photovoltaic panel welding technology is limited by the panel welding production equipment, the production quality is not high, the processing production efficiency is low, and the safety needs to be improved.

[0007] The patent document with the existing patent announcement number CN103962671A discloses a semi-automatic welding machine for solar panels, which belongs to the semi-automatic welding device for solar panels. The welding machine uses 1-3 welding guns to cooperate with the solar panels placed on the automatically moving workbench to complete automatic welding. The welding machine can realize the automatic welding of small batches and multi-variety welded parts, adopts numerical control control, realizes program preheating, and performs numerical control control on the length, welding point, and welding conditions of the welding strip to ensure the fixed length output and fixed length cutting of the welding strip, improve work efficiency, ensure quality accuracy, and avoid the low efficiency caused by manual welding. The equipment adopts a preheating system, which can be preheated in advance without considering changes in the working environment. The welding efficiency and quality are guaranteed during winter operations, and the work of tinning, drying, and welding workpieces of the welding strip is realized in the same equipment at the same time. The flux on the surface of the welding strip is heated and dried by infrared heating, which is conducive to the welding operation of the welding strip and the solar panel.

[0008] However, there are still problems such as multiple cold solder joints, uneven laying of the solder ribbon, uneven application of flux and low efficiency. Summary of the invention

[0009] The technical problem to be solved by the present invention is how to improve the welding effect between the photovoltaic cell panel and the welding strip.

[0010] The present invention solves the above technical problems through the following technical means: a photovoltaic panel welding device, including a welding and cutting device, a clamping device, a welding device, and a conveying device, wherein the welding and cutting device is arranged upstream of the conveying device, the clamping device is arranged above the conveying surface of the conveying device, the welding and cutting device includes a welding strip supply device and a pulling device, the welding strip supply device is used to convey the welding strip, the pulling device includes a pulling shell, a belt pressing cylinder, a pressure plate support frame, and a pressure plate, the belt pressing cylinder is fixedly arranged on the top of the pulling shell, and Its output end is connected to the pressure plate transmission, and drives the pressure plate to move toward or away from the pressure plate support frame and causes the pressure plate and the pressure plate support frame to press or loosen the welding strip; the pulling device can move relative to the welding strip and cause the welding strip to be tightened or relaxed; the clamping device is used to clamp the welding strip, and can slide relative to the pulling device and cause the welding strip to be tightened; the conveying device is used to convey the welding strip, and the welding device is located at the top of the conveying surface of the conveying device, and the welding device includes a welding box and a belt pressing roller arranged in the welding box, and the welding box is elastically connected to the belt pressing roller through a spring.

[0011] The pressing plate is driven by the pressing cylinder to move toward or away from the pressing plate support frame and the pressing plate and the pressing plate support frame to press or loosen the welding strip. The clamping device can slide relative to the pulling device and cause the welding strip to be tightened. The welding strip is straightened before cutting it to prevent the phenomenon of multiple cold welds during welding. The pressure of the pressing wheel can be buffered by the spring to reduce damage to the battery panel. The welding strip can be pressed by the pressing wheel to prevent the welding strip from being misplaced during subsequent welding, thereby improving the welding effect of the battery panel and the welding strip.

[0012] As an optimal technical solution, it also includes a frame, and the pulling device also includes a pushing cylinder, a pushing guide rail, and a pushing guide block. The top of the frame is fixedly connected with the pushing cylinder and the pushing guide rail, the bottom of the pulling device is fixedly connected with the pushing guide block, the telescopic end of the pushing cylinder is fixedly connected to the pushing guide block, and the clamping device is slidably connected above the conveying surface of the conveying device.

[0013] As a preferred technical solution, it further includes a feeding mechanism, and the feeding mechanism includes a motor driving device and a battery panel gripping device. The motor driving device includes X, Y, and Z-direction driving devices. Both X and Y are screw linear driving modules. The Z-direction driving device is fixedly connected to the moving end of the Y-direction driving device. The X-direction driving device is fixedly connected to the output end of the Z-direction driving device. The battery panel gripping device is fixedly connected to the output end of the X-direction driving device, and a sensor is provided at the gripping end of the battery panel gripping device.

[0014] As a preferred technical solution, the welding and cutting device further includes a coating device. The coating device includes a solder tape conveying gantry, a solder tape conveying cover plate, a flux bottle, rollers, and a brush. The solder tape conveying cover plate and the solder tape conveying gantry enclose and are fixedly formed into a coating cavity. The flux bottle is fixedly provided at the top of the solder tape conveying cover plate, and a brush is provided at its bottom end. The brush penetrates through the solder tape conveying cover plate and extends to the top of the coating cavity, causing the flux bottle to supply materials to the coating cavity.

[0015] As a preferred technical solution, a first groove is opened at the top of the solder tape conveying gantry, and a second groove is opened inside one end of the solder tape conveying cover plate facing the solder tape conveying gantry. A roller is rotatably connected to the inner wall of the second groove.

[0016] As a preferred technical solution, the welding and cutting device further includes a solder tape cutting device. The solder tape cutting device includes a cutting frame and upper and lower cutting mechanisms symmetrically arranged inside the cutting frame. The cutting mechanism includes a cylinder, a cutter, and a bracket. The cylinder is fixedly connected to the top of the cutting frame. One bracket is fixedly connected to the output end of the cylinder, and a cutter is provided on the bracket. The two cutters are symmetrical about the plane where the bottom of the first groove is located. A solder tape support piece is further provided inside the cutting frame, and the solder tape support piece is coplanar with the plane where the bottom of the first groove is located.

[0017] As a preferred technical solution, the clamping device includes a fixture device and a fixture moving device. The fixture moving device includes a screw driving module capable of driving the fixture device. The moving end of the screw driving module is fixedly connected to the fixture device through a clamping device bottom plate and drives the fixture device to linearly move along its arrangement direction.

[0018] As a preferred technical solution, the fixture device includes a fixture support, a cylinder seat, a clamping cylinder, a clamping plate, a fixture bracket, a clamping piece, a clamping plate, a clamping plate beam, and a fixture connecting shaft. The fixture support is fixedly connected to the top of the bottom plate of the clamping device. The clamping plate beam is fixedly connected to the front end of the bottom plate of the clamping device, and the height of the front end of the bottom plate of the clamping device is lower than the height of the rear end of the bottom plate of the clamping device. The front end of the bottom plate of the clamping device is fixedly connected with a clamping plate. The front end of the bottom plate of the clamping device is also rotatably connected with a fixture bracket. The fixture bracket is L-shaped, one end of which is connected with a clamping piece, and the other end is rotatably connected with a clamping plate. A clamping cylinder is also arranged on the bottom plate of the clamping device, and the output end of the clamping cylinder is in transmission connection with the clamping piece to drive the clamping piece to rotate relative to the clamping plate and cause the clamping piece and the clamping plate to clamp the welding tape. The rear end of the bottom plate of the clamping device is fixedly connected with a fixture support, and its free end is rotatably connected with the clamping cylinder. The output end of the clamping cylinder is fixedly connected with the clamping plate.

[0019] As a preferred technical solution, the welding device further includes a welding moving device, which includes a horizontal moving mechanism and a vertical moving structure. Both the horizontal moving mechanism and the vertical moving mechanism are lead screw driving mechanisms. The vertical moving mechanism is fixedly connected to the output end of the horizontal moving mechanism, and the output end of the vertical moving mechanism is fixed to the welding box.

[0020] As a preferred technical solution, an opening is provided at the bottom of the welding box. A pressure belt wheel mounting plate is fixedly connected to the inner wall of the bottom of the welding box. The pressure belt wheel mounting frame is elastically connected to the pressure belt wheel mounting plate through a compression spring. A plurality of pressure belt wheels are provided at the bottom of the pressure belt wheel mounting frame, and the pressure belt wheels can move towards the conveying surface of the conveying device.

[0021] The advantages of the present invention are as follows:

[0022] (1) In the present invention, the pressing belt cylinder drives the pressing plate to move towards or away from the pressing plate support frame, causing the pressing plate and the pressing plate support frame to clamp or loosen the welding tape. The clamping device can slide relative to the pulling device, causing the welding tape to be tightened, straightening the welding tape before cutting the welding tape, preventing the phenomenon of multiple virtual welds during welding. The spring can buffer the pressure of the pressure belt wheel, reducing damage to the battery panel. The pressure belt wheel can press the welding tape, preventing the welding tape from being misaligned during subsequent welding, and improving the welding effect between the battery panel and the welding tape.

[0023] (2) In the present invention, by providing a flux coating device in the welding tape cutting device to coat the electrode plate with flux, the welding quality and production efficiency of the battery chip can be effectively improved, and the fragment rate can be reduced.

[0024] (3) In the present invention, by providing a sensor on the battery panel grasping device to check whether the photovoltaic battery panel is damaged after the previous processing process and detect whether the battery panel is complete after the previous process and suitable for welding, the yield can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 FIG. 1 is a schematic diagram of the overall structure of a photovoltaic panel welding device provided by an embodiment of the present invention;

[0026] Figure 2 FIG. 2 is a schematic diagram of the frame structure of a photovoltaic panel welding device provided by an embodiment of the present invention;

[0027] Figure 3 FIG. 3 is a schematic diagram of the feeding device structure of a photovoltaic panel welding device provided by an embodiment of the present invention;

[0028] Figure 4 FIG. 4 is a schematic diagram of the motor drive device structure of a photovoltaic panel welding device provided by an embodiment of the present invention;

[0029] Figure 5 FIG. 5 is a partial enlarged schematic diagram of a photovoltaic panel welding device provided by an embodiment of the present invention Figure 4 ;

[0030] Figure 6 FIG. 6 is a schematic diagram of the battery panel feeding device structure of a photovoltaic panel welding device provided by an embodiment of the present invention;

[0031] Figure 7 FIG. 7 is a partial enlarged schematic diagram of a photovoltaic panel welding device provided by an embodiment of the present invention Figure 6 ;

[0032] Figure 8 FIG. 8 is a schematic diagram of the solder tape cutting device structure of a photovoltaic panel welding device provided by an embodiment of the present invention;

[0033] Figure 9 FIG. 9 is a schematic diagram of the solder tape supply device structure of a photovoltaic panel welding device provided by an embodiment of the present invention;

[0034] Figure 10 FIG. 10 is a schematic diagram of the flux coating and tape pressing device structure of a photovoltaic panel welding device provided by an embodiment of the present invention;

[0035] Figure 11 FIG. 11 is a schematic diagram of the internal structure of the flux coating device of a photovoltaic panel welding device provided by an embodiment of the present invention;

[0036] Figure 12 FIG. 12 is a schematic diagram of the cutting device structure of a photovoltaic panel welding device provided by an embodiment of the present invention;

[0037] Figure 13 FIG. 13 is a schematic diagram of the clamping device structure of a photovoltaic panel welding device provided by an embodiment of the present invention;

[0038] Figure 14 Schematic structural diagram of a fixture device of a photovoltaic panel welding device provided by an embodiment of the present invention;

[0039] Figure 15 Schematic structural diagram of a clamping and moving device of a photovoltaic panel welding device provided by an embodiment of the present invention;

[0040] Figure 16 Schematic structural diagram of a welding device of a photovoltaic panel welding device provided by an embodiment of the present invention;

[0041] Figure 17 Schematic structural diagram of a welding moving device of a photovoltaic panel welding device provided by an embodiment of the present invention;

[0042] Figure 18 Schematic structural diagram of a welding box device of a photovoltaic panel welding device provided by an embodiment of the present invention;

[0043] Figure 19 Schematic structural diagram of the bottom of a welding box device of a photovoltaic panel welding device provided by an embodiment of the present invention;

[0044] Figure 20 Schematic structural diagram of a conveyor belt device of a photovoltaic panel welding device provided by an embodiment of the present invention;

[0045] Reference numerals: 1, loading device; 101, motor driving device; 102, battery panel grasping device; 10101, loading bracket; 10102, left bearing seat; 10103, second lead screw nut; 10104, first guide rail; 10105, lead screw; 10106, second lead screw mounting base plate; 10107, right bearing seat; 10108, first driving motor; 10109, coupling; 10110, locking nut; 10111, bearing end cover; 10112, angular contact bearing; 10201, second guide rail support; 10202, first guide block; 10203, second guide rail; 10204, second guide block; 10205, third guide rail support; 10206, X-direction loading motor; 10207, third guide rail; 10208, third guide block; 10209, X-direction loading motor support; 10210, synchronous belt; 10211, synchronous belt pulley; 10212, sensor; 10213, first guide rail support; 10214, vacuum suction cup; 10215, sensor mounting plate; 10216, Z-direction loading cylinder; 10217, Z-direction cylinder mounting plate; 10218, loading cylinder shaft; 10219, first connecting pin;

[0046] 2. Welding and cutting device; 21. Frame; 201. Welding tape supply device; 202. Pressing and pulling device; 203. Welding tape cutting device; 20101. Drum mounting plate; 20102. Drum shaft; 20103. Drum shaft cover; 20104. Drum limit ring; 20105. First rolling bearing; 20106. Drum shaft; 20107. Welding tape mounting bracket; 20108. Tape supply motor base; 20109. Tape supply motor; 20110. Tape supply wheel coupling; 20111. Tape supply wheel; 20112. Welding tape wheel; 20201. Pushing cylinder; 20202. Welding tape conveying gantry; 20203. Welding tape conveying cover plate; 20204. Flux bottle; 20205. Upper cover plate of tape pressing device; 20206. Tape pressing cylinder seat; 20207. Tape pressing cylinder; 20208. Tape pressing cylinder shaft; 20209. Connecting shaft; 20210. Pressing plate; 20211. Lower frame of tape pressing device; 20212. Pressing plate support frame; 20213. Pushing guide rail; 20124. Pushing guide block; 20215. Roller; 20216. Brush; 20301. Upper shearing cylinder; 20302. Upper bracket; 20303. Upper tool; 20304. Lower bracket; 20305. Lower tool; 20306. Second connecting pin; 20307. Lower shearing cylinder; 20308. Shearing cylinder shaft; 20309. Lower tool holder; 20310. Guide rod; 20311. Upper tool holder;

[0047] 3. Clamping device; 301. Fixture device; 302. Fixture moving device; 30101. Fixture support; 30102. Second rolling bearing; 30103. Cylinder seat; 30104. Clamping cylinder; 30105. Connecting plate; 30106. Fixture support bracket; 30107. Clip; 30108. Clamping plate; 30109. Clamping plate beam; 30110. Fixture connecting shaft; 30201. First bearing seat; 30202. Lead screw; 30203. Ball screw support; 30204. Lead screw nut; 30205. First coupling; 30206. Motor support; 30207. Fixture moving motor; 30208. Fixture guide block; 30209. Fixture bottom plate; 30210. Fixture guide rail;

[0048] 4. Welding device; 401. Welding moving device; 402. Welding box; 40101. Welding motor; 40102. Motor mounting base; 40103. Second bearing seat; 40104. First slide rail; 40105. Slide rail mounting base; 40106. Lead screw; 40107. First slider; 40108. Slider connection plate; 40109. Welding frame; 40110. Second slide rail; 40111. Second slider; 40112. Second coupling; 40113. Third bearing seat; 40114. Lateral movement motor; 40115. Base gasket; 40116. Nut seat; 40117. Lateral lead screw; 40201. Temperature sensor; 40202. Welding gun; 40203. Welding box cover; 40204. Welding box body; 40205. Laser welding nozzle; 40206. Pressure belt roller; 40207. Pressure belt wheel mounting bracket; 40208. Compression spring; 40209. Spring shaft;

[0049] 5. Conveyor belt device; 501. Tailstock; 502. Conveyor belt mounting bracket; 503. Driven tensioning seat; 504. Mounting bracket; 505. Belt; 506. Driving tensioning seat; 507. First synchronous pulley; 509. Reducer; 511. Motor mounting plate; 512. Conveyor belt driving motor; 513. Driven shaft; 514. Welding slide rail mounting plate; 517. Welding support plate. Detailed implementation manners

[0050] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0051] Refer to Figure 1 、 Figure 2, a photovoltaic panel welding device, comprising a feeding device 1, a welding and cutting device 2, a clamping device 3, a welding device 4, a conveyor belt device 5, and a controller; the welding and cutting device 2 is arranged upstream of the conveyor belt device 5, and the feeding device 1, the clamping device 3, and the welding device 4 are arranged in sequence along the conveying direction of the conveyor belt device 5. Among them, the feeding device 1 is used to move the photovoltaic panel from the initial station to the conveyor belt device 5; the welding and cutting device 2 is used to straighten, cut, and convey the welding tape, and apply welding flux to the photovoltaic welding tape; the clamping device 3 is used to clamp the welding tape; the welding device 4 is used for welding the welding tape to the photovoltaic panel, and laser welding is adopted, using laser as a heat source to heat the solder to the molten state to complete the welding operation; the conveyor belt device 5 is used to convey the photovoltaic panel and transport it to the initial position of the next process after the welding of the photovoltaic panel and the welding tape. It should be noted that the controller is electrically connected to the drive structures in the feeding device 1, the welding and cutting device 2, the clamping device 3, the welding device 4, and the conveyor belt device 5, such as the lead screw drive motor, the cylinder, etc.;

[0052] Refer to Figure 2 , Figures 3 - 7 , Figure 20 , the feeding device 1 includes a motor drive device 101 (not shown in the figure) and a panel gripping device 102 (not shown in the figure). The clamping device 3 is fixed on the conveyor belt mounting bracket 502 through the welding slide rail mounting plate 514, and the welding device 4 is fixed on the conveyor belt mounting bracket 502 through the welding slide rail mounting plate 514. The welding and cutting device 2 is fixed on the welding tape cutting device frame 21, and the feeding device 1 is fixed on the feeding bracket 10101. The panel is sent to the conveyor belt device 5 by the feeding device 1. The welding tape is cut and straightened by the welding and cutting device 2 and conveyed to the appropriate position by the clamping device 3. Both the panel and the welding tape are conveyed to the welding device 4 by the conveyor belt device 5 for welding. After welding, the welding box 40204 moves upward, and the welded panel is transported to the initial position of the next process by the conveyor belt device 5.

[0053] Refer to Figures 3 - 7 , the feeding device 1 includes a motor drive device 101 and a panel gripping device 102;

[0054] Among them, the motor drive device 101 in the feeding device 1 includes an X-direction drive device, and the X-direction drive device includes a feeding bracket 10101, a left bearing seat 10102, a second lead screw nut 10103, a first guide rail 10104, a second lead screw 10105, a second lead screw mounting base 10106, a right bearing seat 10107, a first drive motor 10108, a coupling 10109, a locking nut 10110, a bearing end cover 10111, and an angular contact bearing 10112. The feeding bracket 10101 is a gantry type, including a horizontal section and a vertical section, and the two ends of the horizontal section are respectively fixed The fixed connection has a vertical section, wherein the vertical section is used for support, and the horizontal section is used for installing the driving structure that causes the photovoltaic panel to move. The installation of the lead screw, cylinder, etc. in the X-direction, Y-direction, and Z-direction driving devices is based on a feeding bracket 10101 welded from a rectangular tube and a square stabilizing plate. The feeding bracket 10101 is fixed to the ground by bolts to reduce the vibration and displacement error of the overall feeding mechanism. The outer ring of the angular contact bearing 10112 is connected with the center hole of the right bearing seat 10107 by transition fit, and the locking nut 10110 (with a threaded hole on the oblique side) is fixedly connected to the lead screw by bolts (not shown in the figure);

[0055] The left bearing seat 10102, the first guide rail 10104, and the right bearing seat 10107 are all fixedly connected to the second lead screw mounting base plate 10106 by screws or bolts. The second lead screw mounting base plate 10106 is fixedly connected to the horizontal section of the feeding bracket 10101 by screws or bolts. The right end of the right bearing seat 10107 is fixedly connected to the bearing end cover 10111. The second lead screw 10105 is rotatably connected between the left bearing seat 10102 and the right bearing seat 10107. The second lead screw nut 10103 is screwed on the second lead screw 10105. The horizontal section of the feeding bracket 10101 is also fixedly connected to the first drive motor 10 108, the output end of the first drive motor 10108 is connected to the second lead screw 10105 through a coupling 10109. In this embodiment, the first drive motor 10108 is located at the right end of the second lead screw mounting base plate 10106. The first drive motor 10108 drives the second lead screw 10105 to rotate through the coupling 10109, so that the second lead screw nut 10103 moves horizontally (in the Y direction) along the second lead screw mounting base plate 10106. Two first guide rails 10104 are fixedly connected to the second lead screw mounting base plate 10106, and two first guide rails 10104 are fixedly connected to the second lead screw nut 10103;

[0056] A second guide rail support 10201 is fixedly connected to the second lead screw nut 10103, and two first guide blocks 10202 are fixedly connected to one end of the second guide rail support 10201 facing the second lead screw nut 10103, and the two first guide blocks 10202 are respectively slidably matched with the first guide rail 10104, wherein the first guide rail 10104 is an I-shaped to achieve vertical limiting, and prevent the first guide blocks 10202 from slipping off the first guide rail 10104; a Z-direction drive device is provided at one end of the second guide rail support 10201 away from the second lead screw nut 10103, and the Z-direction drive device includes the second guide rail support 10201, the second guide rail 10203, a Z-direction feeding cylinder 10216, and a Z-direction cylinder mounting plate 1 0217, feeding cylinder shaft 10218, X upward feeding motor support 10209, the second guide rail 10203, Z upward feeding cylinder 10216, Z cylinder mounting plate 10217, feeding cylinder shaft 10218, X upward feeding motor support 10209 are all located at the end of the second guide rail support 10201 away from the second lead screw nut 10103, the top of the second guide rail support 10201 is fixedly connected with the Z cylinder mounting plate 10217, the top of the Z cylinder mounting plate 10217 is fixedly connected with the Z upward feeding cylinder 10216, the feeding cylinder shaft 10218 of the Z upward feeding cylinder 10216 is fixedly connected with the third guide rail support 10205, and two The second guide rail 10203, it should be noted that a limit is provided at the bottom of the second guide rail 10203 to prevent the third guide rail support 10205 from falling and slipping; the third guide rail support 10205 is fixedly connected to one end of the second guide rail 10203 with a second guide block 10204 adapted to the second guide rail 10203, the third guide rail support 10205 includes a vertically fixed vertical section and a horizontal section, the vertical section is fixed to the feeding cylinder shaft 10218 by a first connecting pin 10219, and an X-direction driving mechanism is arranged on the horizontal section, the X-direction driving device includes an X-direction feeding motor 10206, a third guide rail 10207, a third guide block 10208, an X-direction feeding motor support 10209, a synchronous belt 10210, and a synchronous belt 10211. Step pulley 10211, battery panel grabbing device 102; the top of the horizontal section of the third guide rail support 10205 is fixedly connected with an X-upward feeding motor support 10209, and the X-upward feeding motor support 10209 is fixedly connected with an X-upward feeding motor 10206, and the X-upward feeding motor 10206 is connected to an X-direction screw drive assembly through a synchronous belt 10210 and a synchronous pulley 10211. The X-direction screw drive assembly is a linear drive module in the prior art, and its output end is drivingly connected with the battery panel grabbing device 102, and the X-upward feeding motor 10206 drives the output shaft of the X-direction screw drive assembly to rotate through the synchronous belt 10210 and the synchronous pulley 10211 to realize the movement of the battery panel grabbing device 102 in the X direction;

[0057] The solar panel gripping device 102 includes a sensor 10212, a first guide rail support 10213, a vacuum suction cup 10214, and a sensor mounting plate 10215. The first guide rail support 10213 is located at the bottom of the sensor mounting plate 10215 and is fixedly formed into a three-dimensional frame structure through a vertical connecting frame in sequence. A vacuum suction cup 10214 is provided at the bottom of the first guide rail support 10213. The vacuum suction cup 10214 is connected to an external air source and provides a negative pressure environment for it. A sensor 10212 is provided at the free end of the sensor mounting plate 10215. The sensor 10212 is electrically connected to a controller. The sensor 10212 can be a commercially available infrared imager. Under the condition of a simulated light source, the infrared imager acquires the surface image of the photovoltaic panel, and successively acquires the surface infrared images of the photovoltaic panels with the four types of defects: normal photovoltaic panel, debris defect, crack defect, broken grid defect, and black sheet defect, and saves the surface temperature data of the acquired images. Finally, data such as images and temperatures are transmitted and identified. The sensor 10212 is directly above the midline connecting the two vacuum suction cups 10214 to check whether the photovoltaic panel has been damaged after the previous processing step and detect whether the panel is intact after the previous process and suitable for welding, thereby improving the yield rate.

[0058] Refer to Figure 8 、 Figure 9 The welding and cutting device 2 includes a frame 21, a solder tape supply device 201 (not shown in the figure), a pressing and pulling device 202 (not shown in the figure), and a solder tape cutting device 203 (not shown in the figure). The frame 21 is fixedly connected to the front end of the conveyor belt device 5. The solder tape supply device 201, the pressing and pulling device 202, and the solder tape cutting device 203 are arranged in sequence along the arrangement direction of the frame 21.

[0059] The solder tape supply device 201 includes a roller mounting plate 20101, a roller 20102, a roller shaft cover 20103, a roller limiting ring 20104, a first rolling bearing 20105, a roller shaft 20106, a solder tape mounting frame 20107, a tape supply motor seat 20108, a tape supply motor 20109, a tape supply wheel coupling 20110, a tape supply wheel 20111, and a solder tape wheel 20112. The solder tape mounting frame 20107 and the roller mounting plate 20101 are fixedly connected to the frame 21. A tape supply motor 20109 is fixedly connected to the top of the solder tape mounting frame 20107 through the tape supply motor seat 20108. The output shaft of the tape supply motor 20109 is rotationally connected to a rotating shaft through the tape supply wheel coupling 20110. Two groups of solder tape wheels 20112 are fixedly connected to the rotating shaft. Each group of solder tape wheels 20112 includes two solder tape wheels 20112. After being fixed to the rotating shaft, they form a tape supply wheel 20111, which are respectively used for the rotation and supply of the two groups of solder tapes. The tape supply motor 20109 drives the solder tape wheels 20112 to rotate as a power source.

[0060] Three groups of rollers 20102 are fixedly connected to the roller mounting plate 20101, namely the front, middle, and rear rollers. The structures of the three groups of rollers 20102 are the same, but their heights are different. Among them, the front and rear rollers have the same height, and the height of the middle roller is lower than that of the front and rear rollers. The rollers 20102 are rotatably connected to the top of the roller mounting plate 20101. Two groups of roller limit rings 20104 are fixedly connected to the roller mounting plate 20101. One group of roller limit rings 20104 consists of two coaxially arranged roller limit rings 20104, and the two roller limit rings 20104 form a limiting part. The limiting part is used to limit and straighten the welding tape. The welding tape passes through the outer walls of the front, middle, and rear rollers in sequence by the welding tape wheel 20112, forms a U shape, and extends to the pressing and pulling device 202.

[0061] Refer to Figure 8 , Figure 9 , Figure 10 , Figure 11 , the pressing and pulling device 202 includes a coating device and a pulling device. The coating device includes a welding tape conveying gantry 20202, a welding tape conveying cover plate 20203, a flux bottle 20204, a roller 20215, and a brush 20216. The welding tape conveying gantry 20202 is fixedly connected to the top of the frame 21. A first groove is opened at the top of the welding tape conveying gantry 20202. A welding tape conveying cover plate 20203 is also fixedly connected to the top of the welding tape conveying gantry 20202. A second groove is opened inside one end of the welding tape conveying cover plate 20203 facing the welding tape conveying gantry 20202. The inner wall of the second groove is rotatably connected to the roller 20215. The first groove and the second groove enclose a coating cavity. A flux bottle 20204 is fixedly connected to the top of the welding tape conveying cover plate 20203. A brush 20216 is provided at the bottom of the flux bottle 20204. The brush 20216 penetrates through the welding tape conveying cover plate 20203 and extends to the top of the coating cavity, so that the flux bottle 20204 can continuously supply materials to the coating cavity through the brush 20216. For example, the flux can drip to the bottom of the first groove through the brush 20216, facilitating the contact between the top of the welding tape and the roller 20215, so that both the top and bottom of the welding tape are coated with flux; the flux can play a role in promoting the welding process, such as assisting heat conduction, removing surface oxides, reducing surface tension, and improving welding quality.

[0062] The pulling device includes a pushing cylinder 20201, an upper cover plate 20205 of the tape pressing device, a tape pressing cylinder seat 20206, a tape pressing cylinder 20207, a tape pressing cylinder shaft 20208, a connecting shaft 20209, a pressing plate 20210, a lower frame 20211 of the tape pressing device, a pressing plate support frame 20212, a pushing guide rail 20213, and a pushing guide block 20124. The lower frame 20211 of the tape pressing device is slidably connected to the top of the machine frame 21. Two pushing guide rails 20213 are fixedly connected to the top of the machine frame 21. A pushing guide block 20124 adapted to the pushing guide rail 20213 is fixedly connected to the bottom of the lower frame 20211 of the tape pressing device. The lower frame 20211 of the tape pressing device is U-shaped, and its top is fixedly connected to the upper cover plate 20205 of the tape pressing device, enclosing a double-square structure. A tape pressing cylinder 20207 is fixedly connected to the top of the upper cover plate 20205 of the tape pressing device through the tape pressing cylinder seat 20206. The tape pressing cylinder shaft 20208 (i.e., the output end) of the tape pressing cylinder 20207 extends into the double-square structure and is fixedly connected to the pressing plate 20210. The top of the pressing plate 20210 is connected and fastened to the tape pressing cylinder shaft 20208 through the connecting shaft 20209. A pressing plate support frame 20212 is fixedly connected to the inner wall of the bottom of the lower frame 20211 of the tape pressing device. The plane where the top of the pressing plate support frame 20212 is located is coplanar with the plane where the bottom of the first groove is located. The tape pressing cylinder 20207 can drive the pressing plate 20210 to abut against the pressing plate support frame 20212 and clamp the welding tape.

[0063] A pushing cylinder 20201 is also fixedly connected to the top of the machine frame 21. The output shaft of the pushing cylinder 20201 is fixedly connected to the pressing plate support frame 20212. By means of the pushing cylinder 20201, the pressing plate support frame 20212 can be pushed to move along the pushing guide rail 20213. After clamping the welding tape, the welding tape can be straightened to prevent problems such as virtual soldering and uneven laying of the welding tape caused by curling of the welding tape during welding.

[0064] Refer to Figure 8 、 Figure 12, in the welding and cutting device 2, the tape cutting device 203 of the welding tape cutting device 2 includes an upper shearing cylinder 20301, an upper bracket 20302, an upper cutter 20303, a lower bracket 20304, a lower cutter 20305, a second connecting pin 20306, a lower shearing cylinder 20307, a shearing cylinder shaft 20308, a lower tool holder 20309, a guide rod 20310, and an upper tool holder 20311. The lower bracket 20304 and the upper bracket 20302 are enclosed and fixed to form a rectangular cutting frame. Two guide rods 20310 are fixedly connected to the bottom of the upper bracket 20302. The lower tool holder 20309 and the upper tool holder 20311 are slidably connected to the two guide rods 20310. The lower cutter 20305 and the upper cutter 20303 are respectively fixedly connected to the lower tool holder 20309 and the upper tool holder 20311. A welding tape support piece is also welded inside the rectangular structure to support the welding tape. The welding tape support piece has two sections, respectively supporting two welding tapes, and the plane where the top of the pressing plate support frame 20212 is located is coplanar with the plane where the bottom of the first groove is located. The welding tape support piece is arranged in a staggered manner with the lower tool holder 20309 and the upper tool holder 20311 to prevent the lower tool holder 20309 and the upper tool holder 20311 from conflicting with the welding tape support piece when cutting the tape;

[0065] The connection methods of the upper shearing cylinder 20301 and the upper tool holder 20311, and the lower shearing cylinder 20307 and the lower tool holder 20309 are the same as the connection method of the pressing belt cylinder 20207 and the pressing plate 20210, and both are connected to the output end of their corresponding driving parts, which will not be elaborated here. In this embodiment, preferably, the upper shearing cylinder 20301 and the lower shearing cylinder 20307 drive the upper cutter 20303 and the lower cutter 20305 at the same time to cut the welding tape. When the welding tape is pulled forward by the previous pulling device, due to the flexibility of the welding tape itself, it will produce a large sag and bend. Therefore, in the embodiment, a welding tape support piece is designed between the tape cutting device 203 and the pressing and pulling device 202 and welded to the lower bracket 20304.

[0066] Refer to Figure 13 , Figure 14 , Figure 15, the fixture moving device 302 includes a first bearing block 30201, a lead screw 30202, a ball screw support 30203, a lead screw nut 30204, a first coupling 30205, a motor support 30206, a fixture moving motor 30207, a gripper device guide block 30208, a gripper device bottom plate 30209, and a gripper device guide rail 30210. A fixture moving motor 30207 is fixedly connected to the motor support 30206. The output end of the fixture moving motor 30207 is in transmission connection with the lead screw 30202 through the first coupling 30205. A lead screw nut 30204 is screwed onto the lead screw 30202. A ball screw support 30203 is fixedly connected to the outside of the lead screw nut 30204. A gripper device guide rail 30210 is provided on each side of the belt device 5. A gripper device guide block 30208 is slidably connected to the gripper device guide rail 30210. The tops of the two gripper device guide blocks 30208 are fixedly connected to a gripper device bottom plate 30209. One end of the gripper device bottom plate 30209 is fixedly connected to the ball screw support 30203. The lead screw nut 30204 is driven by the fixture moving motor 30207 to move, thereby driving the gripper device bottom plate 30209 to reciprocate along the length direction of the conveyor belt device 5. Connection brackets are fixedly connected to both sides of the conveyor belt device 5, and the connection brackets are used to support the gripper device guide rail 30210 and the first bearing block 30201.

[0067] Refer to Figure 11 , Figure 12 , Figure 13 , in the gripper device 3, the fixture device 301 includes a fixture support 30101, a second rolling bearing 30102, a cylinder seat 30103, a gripper cylinder 30104, a connecting plate 30105, a fixture bracket 30106, gripper plates 30107, clamping plates 30108, a clamping plate beam 30109, and a fixture connecting shaft 30110;

[0068] The clamp support 30101 is fixed to the top of the clamping device bottom plate 30209 by screws or bolts, and the clamp beam 30109 is fixed to the front end of the clamping device bottom plate 30209 by screws or bolts. The front end height of the clamping device bottom plate 30209 is lower than the rear end height of the clamping device bottom plate 30209. The front end of the clamping device bottom plate 30209 is fixedly connected with a clamp plate 30108. The front end of the clamping device bottom plate 30209 is also rotatably connected with a clamp bracket 30106. The clamp bracket 30106 is L-shaped, with a clamp 30107 connected at one end and a connecting plate 30107 rotatably connected at the other end. 05, the clip 30107 can be clamped with the clamping plate 30108 to clamp the welding strip, and a clamping cylinder 30104 is also provided on the bottom plate 30209 of the clamping device. The output end of the clamping cylinder 30104 is transmission-connected with the clip 30107 to drive the clip 30107 to rotate relative to the clamping plate 30108. The rear end of the bottom plate 30209 of the clamping device is fixedly connected with a clamp support 30101, the top of the clamp support 30101 is inclined, and its free end is rotationally connected with the clamping cylinder 30104, and the output end of the clamping cylinder 30104 is fixedly connected with the connecting plate 30105;

[0069] The clamping cylinder 30104 serves as the power source of the clamp device 301. The clamp bracket 30106 is pushed by the cylinder shaft to clamp and release the welding strip. Both ends of the clamping cylinder 30104 are mounted in a bearing rotation manner so that the direction of the cylinder shaft can be effectively adjusted when the cylinder pushes the clamp.

[0070] See also Figure 16 , Figure 17 The welding device 4 includes a welding mobile device 401 (not shown) and a welding box 402 (not shown), wherein the welding mobile device 401 includes a lateral movement mechanism and a vertical movement structure, the lateral movement mechanism and the vertical movement mechanism are both screw drive mechanisms or linear modules in the prior art, the vertical movement mechanism is fixedly connected to the output end of the lateral movement mechanism to achieve lateral movement, and the output end of the vertical movement mechanism is connected to the welding box 402, thereby achieving lateral and vertical adjustment of the welding box 402;

[0071] The lateral movement mechanism includes a welding frame 40109, a second slide rail 40110, a second slider 40111, a second coupling 40112, a third bearing block 40113, a lateral movement motor 40114, a base gasket 40115, a nut seat 40116, and a lateral lead screw 40117. The welding frame 40109 is slidably connected to both sides of the conveyor belt conveying device. A lateral lead screw 40117 is rotatably connected between two third bearing blocks 40113. A nut seat 40116 is screwed onto the lateral lead screw 40117. A base gasket 40115 is fixedly connected to the top of the nut seat 40116. The output shaft of the lateral movement motor 40114 is drivingly connected to the lateral lead screw 40117 through a second coupling 40112 to drive the nut seat 40116 to move laterally. Connecting brackets are fixed to both sides of the conveyor belt device 5. The connecting brackets are L-shaped. One of the connecting brackets is used to support the lateral movement motor 40114 and the third bearing block 40113. The lateral movement motor 40114 and the third bearing block 40113 are both fixedly connected to the connecting bracket. Second slide rails 40110 are respectively fixedly connected to the two connecting brackets. Second sliders 40111 are respectively slidably connected to the second slide rails 40110. The welding frame 40109 is a portal frame. The two bottoms of the welding frame 40109 are respectively fixedly connected to a second slider 40111. One of the second sliders 40111 is fixedly connected to the base gasket 40115, thereby driving the welding frame 40109 to move laterally;

[0072] The vertical movement mechanism includes a welding motor 40101, a motor mounting seat 40102, a second bearing block 40103, a first slide rail 40104, a slide rail mounting seat 40105, a vertical lead screw 40106, a first slider 40107, and a slider connection plate 40108. A slide rail mounting seat 40105 is fixedly connected to the top of the welding frame 40109. A motor mounting seat 40102 is arranged on the top of the slide rail mounting seat 40105. A welding motor 40101 is fixedly connected to the motor mounting seat 40102. A second bearing block 40103 is arranged on the slide rail mounting seat 40105. A vertical lead screw 40106 is rotatably connected to the second bearing block 40103. The vertical lead screw 40106 is drivingly connected to the output end of the welding motor 40101. A screw nut adapted to it is screwed onto the vertical lead screw 40106. The screw nut is fixedly connected to a slider connection plate 40108. The slider connection plate 40108 is also slidably engaged with a first slide rail 40104 fixed on the slide rail mounting seat 40105 through a first slider 40107. A welding box 402 is fixedly connected to the slider connection plate 40108.

[0073] The welding moving device 401 moves horizontally and vertically through the same roller screw pair and slider rail pair as described above, and has good accuracy and synchronization. In this embodiment, the screw drive mechanism can be a commercially available linear module or ball screw pair.

[0074] Refer to Figure 16 、 Figure 18 、 Figure 19 , in the welding device 4, the welding box device 402 includes a temperature sensor 40201, a welding gun 40202, a welding box cover 40203, a welding box 40204, a laser welding nozzle 40205, a pressure belt roller 40206, a pressure belt wheel mounting bracket 40207, a compression spring 40208, and a spring shaft 40209. The welding box cover 40203 is fixed on the top of the welding box 402.

[0075] The bottom of the welding box 402 is provided with an opening, and a temperature sensor 40201, a welding gun 40202, and a pressure belt wheel mounting plate are sequentially fixed on the top. The pressure belt wheel mounting bracket 40207 can also be directly connected to the welding box cover 40203 through the compression spring 40208. The welding gun 40202 is inclined, and the welding gun is inclined 30° after being perpendicular to the welding tape to achieve the best welding effect. A laser welding nozzle 40205 is provided at its end. Two spring shafts 40209 are fixedly connected to the bottom of the pressure belt wheel mounting plate. The pressure belt wheel mounting bracket 40207 is slidably connected to the spring shafts 40209. The pressure belt wheel mounting bracket 40207 is elastically connected to the pressure belt wheel mounting plate through the compression spring 40208. A plurality of pressure belt rollers 40206 are provided at the bottom of the pressure belt wheel mounting bracket 40207. In this embodiment, four are taken as an example, but it is not limited thereto. The temperature sensor 40201 faces the weld seam. The welding gun 40202 is a fiber laser welder. The temperature sensor 40201 and the welding gun 40202 are both electrically connected to the controller.

[0076] The pressure belt wheel mounting bracket 40207 is fixedly connected to the welding box cover 40203 through the spring shaft 40209. The compression spring 40208 can play a certain buffering role when the pressure belt roller presses the welding tape. In this example, in order to prevent the welding wheel from damaging the weld seam, in this embodiment, the laser welding nozzle 40205 is arranged in the front, the pressure belt rollers 40206 are arranged in the back, and a temperature sensor 40201 is provided at the top of the weld seam. The welding gun is inclined 30° after being perpendicular to the welding tape to achieve the best welding effect.

[0077] Refer to Figure 2 、 Figure 20The conveyor belt device 5 includes a tailstock 501, a conveyor belt mounting bracket 502, a driven tensioning seat 503, a mounting bracket 504, a belt 505, an active tensioning seat 506, a first synchronous wheel 507, a reducer 509, a flange 510, a motor mounting plate 511, a conveyor belt driving motor 512, and a driven shaft 513 (not shown in the figure). The entire conveyor belt device 5 is supported by the conveyor belt mounting bracket 502. The tailstock 501, the mounting bracket 504, and the active tensioning seat 506 are fixed on the top of the conveyor belt mounting bracket 502 in sequence. The active tensioning seat 506 is rotatably connected with the active shaft 507. The motor mounting plate 511 is located at the bottom of the mounting bracket 504, and a conveyor belt driving motor 512 is fixed on the motor mounting plate 511. The output end of the conveyor belt driving motor 512 is connected to the first synchronous wheel 507 through a synchronous sprocket and a synchronous chain belt to drive the entire belt 505 to move. The conveying surface of the conveyor belt device 5 is coplanar with the plane where the bottom of the first groove is located.

[0078] The conveyor belt drive motor 512 is fixedly connected to the motor mounting plate 511 by screws, and the motor mounting plate 511 is fixedly connected to the conveyor belt mounting bracket 502 by screws. The conveyor belt drive motor 512 is connected to the reducer 509 in a transmission manner, which plays a role in reducing speed and increasing torque. The gear chain 508 is connected to the belt 505 in a transmission manner, so that the driving shaft 507 and the driven shaft 513 rotate, thereby driving the battery cell to move. The belt 505 is fixedly connected to the active tensioning seat 506 and the driven tensioning seat 503 by screws. A welding support plate 517 is provided below the welding station to adjust the tightness of the belt and provide support during welding.

[0079] Working principle: The battery panel grasping device 102 is pushed by the Z upward feeding cylinder 10216 to make the vacuum suction cup 10214 approach the battery cell. After reaching the predetermined position, the vacuum suction cup 10214 starts to absorb. The Z upward feeding cylinder 10216 drives the vacuum suction cup 10214 to move upward. The Y-direction driving device moves the entire mechanism along the Y direction toward the conveyor belt device 5. After reaching the predetermined position, the output end of the Z upward feeding cylinder 10216 moves downward, and the vacuum suction cup 10214 detaches the battery cell from the belt 505. Then the battery panel grasping device 102 returns to its original position.

[0080] At this time, the solder tape is driven by the solder tape supply device 201, and the solder tape is transported to the coating device through the limitation of the roller limiting ring 20104. The pressing belt cylinder 20207 of the pulling device presses down tightly. The solder tape coated with the welding agent is pushed forward by 20 mm by the pushing cylinder 20201. The fixture device 301 clamps the photovoltaic solder tape. At this time, the pressing belt cylinder 20207 is relaxed, and the fixture moving device 302 clamps the solder tape and moves forward by 200 mm. At this time, the pressing belt cylinder 20207 presses down tightly again, and the fixture moving device 302 moves forward by 1 mm again to straighten the solder tape. Subsequently, the solder tape cutting device 203 moves down to cut the photovoltaic solder tape. The fixture moving device 302 lays the solder tape on the top of the battery panel. The battery panel is transported to a suitable position under the welding box 402 through the conveyor belt 505. The welding gun 40202 follows the welding box 402 and moves down to a predetermined position. The welding box 402 drives the pressing belt roller 40206 to contact the solder tape under the drive of the vertical moving mechanism, providing a small pressure to make it not easy to deviate. At this time, the welding box 402 drives the welding gun 40202 to move backward as a whole to complete the welding. After the welding is completed, the welding box 402 moves up to return to the original working position, and is transported through the conveyor belt device 5 to the position where the next process starts, and then the process actions are repeated from the beginning.

[0081] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A photovoltaic panel welding device, comprising a welding and cutting device, a clamping device, and a conveying device. The conveying device is used for conveying welding tapes. The welding and cutting device is arranged upstream of the conveying device. The clamping device is arranged above the conveying surface of the conveying device. The welding and cutting device includes a pulling device. The pulling device includes a pulling housing, a tape pressing cylinder, a pressing plate support frame, and a pressing plate. The tape pressing cylinder is fixedly arranged at the top of the pulling housing, and its output end is in transmission connection with the pressing plate, and drives the pressing plate to move towards or away from the pressing plate support frame, so as to cause the pressing plate to press or release the welding tape against the pressing plate support frame; characterized in that, It also includes a welding device. The welding and cutting device further includes a solder tape supply device, a solder tape cutting device, and a coating device. The solder tape cutting device is arranged downstream of the pulling device. The solder tape cutting device includes a cutting frame, and a solder tape support piece is also arranged inside the cutting frame. The solder tape supply device is used for conveying the solder tape. The pulling device can move relative to the solder tape and cause the solder tape to be tightened or relaxed. The clamping device is used for clamping the solder tape and can slide relative to the pulling device to cause the solder tape to be tightened. The welding device is located at the top of the conveying surface of the conveying device. The welding device includes a welding box and a pressure belt roller arranged inside the welding box. The welding box is elastically connected to the pressure belt roller through a spring. The welding box includes a pressure belt wheel mounting frame. An opening is provided at the bottom of the welding box, and a temperature sensor, a welding gun, and a pressure belt wheel mounting plate are sequentially fixed at the top. The temperature sensor faces the weld seam. The welding gun is inclined. The welding gun is inclined 30° after being perpendicular to the solder tape. The pressure belt wheel mounting frame is elastically connected to the pressure belt wheel mounting plate through a compression spring. A plurality of pressure belt rollers are provided at the bottom of the pressure belt wheel mounting frame. A laser welding nozzle is provided at the end of the welding gun. The laser welding nozzle is arranged in front, and the pressure belt rollers are arranged behind. The solder tape supply device includes a drum mounting plate. Three groups of drums are fixedly connected to the drum mounting plate, namely the front, middle, and rear drums. Two groups of drum limit rings are fixedly connected to the drum mounting plate. One group of drum limit rings consists of two coaxially arranged drum limit rings. The two drum limit rings form a limiting part. The limiting part is used for limiting and straightening the solder tape. The solder tape passes through the outer walls of the front, middle, and rear drums, forms a U shape, and extends to the pressing and pulling device. The coating device includes a solder tape conveying gantry, a solder tape conveying cover plate, rollers, and a brush. The solder tape conveying cover plate and the solder tape conveying gantry are enclosed and fixed to form a coating cavity. The flux bottle is fixedly arranged on the top of the solder tape conveying cover plate, and a brush is provided at the bottom end. The brush penetrates through the solder tape conveying cover plate and extends to the top of the coating cavity, and causes the flux bottle to supply materials to the coating cavity.

2. The photovoltaic panel welding device according to claim 1, characterized in that, It also includes a frame. The pulling device further includes a pushing cylinder, a pushing guide rail, and a pushing guide block. The pushing cylinder and the pushing guide rail are fixedly connected to the top of the frame. The pulling device is fixedly connected with the pushing guide block at the bottom. The telescopic end of the pushing cylinder is fixedly connected with the pushing guide block. The clamping device is slidably connected above the conveying surface of the conveying device.

3. The welding device for a photovoltaic panel according to claim 1, characterized in that, It also includes a loading mechanism. The loading mechanism includes a motor driving device and a battery panel gripping device. The motor driving device includes X, Y, and Z-direction driving devices. Both X and Y are screw linear driving modules. The Z-direction driving device is fixedly connected to the moving end of the Y-direction driving device. The X-direction driving device is fixedly connected to the output end of the Z-direction driving device. The battery panel gripping device is fixedly connected to the output end of the X-direction driving device. A sensor is provided at the gripping end of the battery panel gripping device.

4. A photovoltaic panel welding device according to claim 2, characterized in that, A first groove is provided at the top of the solder tape conveying gantry. A second groove is provided inside one end of the solder tape conveying cover plate facing the solder tape conveying gantry. A roller is rotatably connected to the inner wall of the second groove.

5. The welding device for a photovoltaic panel according to claim 4, wherein, The solder strip cutting device includes an upper shearing cylinder, an upper bracket, an upper tool, a lower bracket, a lower tool, and a lower shearing cylinder. The lower bracket and the upper bracket are enclosed and fixed to form a rectangular cutting frame. Two guide rods are fixedly connected to the bottom of the upper bracket. The lower tool holder and the upper tool holder are slidably connected to the two guide rods. The lower tool and the upper tool are fixedly connected to the lower tool holder and the upper tool holder respectively. The solder strip support piece is arranged inside the rectangular structure. The solder strip support piece has two sections, which support two solder strips respectively and are coplanar with the plane where the bottom of the first groove is located. The upper tool and the lower tool are symmetric about the plane where the bottom of the first groove is located.

6. The photovoltaic cell panel welding device according to claim 2, characterized in that, The clamping device includes a fixture device and a fixture moving device. The fixture moving device includes a lead screw driving module capable of driving the fixture device. The moving end of the lead screw driving module is fixedly connected to the fixture device through a clamping device bottom plate and drives the fixture device to linearly move along its arrangement direction.

7. A photovoltaic panel welding device according to claim 6, characterized in that, The fixture device includes a fixture support, a cylinder seat, a clamping cylinder, a clamping plate, a fixture bracket, a clamping piece, a clamping plate, a clamping plate beam, and a fixture connecting shaft. The fixture support is fixedly connected to the top of the clamping device bottom plate. The clamping plate beam is fixedly connected to the front end of the clamping device bottom plate, and the height of the front end of the clamping device bottom plate is lower than the height of the rear end of the clamping device bottom plate. A clamping plate is fixedly connected to the front end of the clamping device bottom plate. A fixture bracket is also rotatably connected to the front end of the clamping device bottom plate. The fixture bracket is L-shaped, one end of which is connected to a clamping piece, and the other end is rotatably connected to a clamping plate. A clamping cylinder is also arranged on the clamping device bottom plate, and the output end of the clamping cylinder is in transmission connection with the clamping piece to drive the clamping piece to rotate relative to the clamping plate and cause the clamping piece and the clamping plate to clamp the solder strip. A fixture support is fixedly connected to the rear end of the clamping device bottom plate, and its free end is rotatably connected to the clamping cylinder. The output end of the clamping cylinder is fixedly connected to the clamping plate.

8. A photovoltaic panel welding device according to claim 1, characterized in that, The welding device further includes a welding moving device. The welding moving device includes a horizontal moving mechanism and a vertical moving structure. Both the horizontal moving mechanism and the vertical moving structure are lead screw driving mechanisms. The vertical moving structure is fixedly connected to the output end of the horizontal moving mechanism. The output end of the vertical moving structure is fixed to the welding box.

9. The welding device for a photovoltaic panel according to claim 8, characterized in that, The pressure belt wheel can move towards the conveying surface of the conveying device.

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