Photovoltaic cell stringer convenient to adapt to different sizes and method thereof

Abstract

The application discloses a photovoltaic cell string welding machine convenient for adapting to photovoltaic cells of different sizes and a method thereof, and belongs to the technical field of photovoltaic cells. The photovoltaic cell string welding machine comprises a rack, a welding device, a plate material feeding device and a welding strip feeding device. The welding device is installed on the left side of the rack. The plate material feeding device is installed on the middle side of the rack. The welding strip feeding device is installed on the right side of the rack. The plate material feeding device comprises a hollow rotating platform, a rotating disc, a cam, a first linear module, a second linear module, a suction cup and a double-rod cylinder. The fixed end of the hollow rotating platform is fixedly installed on the middle side of the rack. The rotating disc is fixedly installed on the output end of the hollow rotating platform. A circular opening is formed in the middle side of the rotating disc. Through the above mode, the photovoltaic cell can be aligned in multiple directions while being fed, and the standard position feeding can be facilitated, and the distance between the guide grooves of the special-shaped support can be quickly adjusted.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic cell technology, specifically to a photovoltaic cell string welding machine and method that are easy to adapt to different sizes. Background Technology

[0002] Photovoltaic cell string welding machines are key equipment in the production process of photovoltaic modules. Their main function is to connect individual photovoltaic cells into a cell string by welding. The principle is to use high-precision welding technology, such as infrared heating welding and laser welding, to tightly bond the solder strip to the main grid lines of the cell. For example, in the process of infrared heating welding, infrared light emitted by an infrared lamp irradiates the solder strip and the main grid lines of the cell, causing the solder (usually a tin alloy) of the solder strip to melt, thereby welding the cells together.

[0003] Chinese patent CN115070149B discloses a photovoltaic energy storage cell string welding machine, comprising a wire drawing area, a feeding area, and a welding area. The wire drawing area includes a feeding platform for placing welding strips. A winding component is arranged above the feeding platform, and the welding strip is wound around the surface of the winding component. The winding component includes threaded rods and threaded sleeves. There are several threaded rods, and the center lines of the threaded rods coincide. Adjacent threaded rods are connected by threaded sleeves. A winding roller is fixedly arranged in the middle of the threaded rod, and the welding strip is wound around the surface of the winding roller. One end of the threaded rod at both ends is a fixed end, and the other end is a movable end. The fixed end of the threaded rod is connected to the feeding platform through a fixed block, and the movable end of the threaded rod is connected to the feeding platform through a support rod. The upper end of the support rod and the fixed block are provided with a rotating shaft, and the rotating shaft is rotatably connected to the corresponding threaded rod. Through the cooperation of the threaded sleeve, the rotating roller, and the support rod, the spacing between adjacent winding rollers is always maintained, thereby changing the number and spacing of welding strips in the working area.

[0004] However, the technical solution of this patent has the following problems:

[0005] This patent uses a combination of threaded sleeves, rotating rollers, and support rods to ensure that adjacent winding rollers always maintain an equal spacing, thereby changing the number and spacing of welding strips in the working area. However, it cannot quickly adjust the spacing between the welding wire guide grooves, nor can it perform multi-directional calibration of the battery cells while feeding materials.

[0006] Based on this, the present invention designs a photovoltaic cell string welding machine and method that are easy to adapt to different sizes to solve the above problems. Summary of the Invention

[0007] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a photovoltaic cell string welding machine and method that are easy to adapt to different sizes.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A photovoltaic cell string welding machine adaptable to different sizes includes a frame, and further includes: a welding device, a plate feeding device, and a welding strip feeding device. The welding device is installed on the left side of the frame, the plate feeding device is installed on the middle side of the frame, and the welding strip feeding device is installed on the right side of the frame. The plate feeding device includes: a hollow rotating platform, a rotating disk, a cam, a first linear module, a second linear module, a suction cup, a double-rod cylinder, and a lifting mechanism. The fixed end of the hollow rotating platform is fixedly installed on the middle side of the frame, and the rotating disk is fixedly installed on the output end of the hollow rotating platform. A circular opening is formed on the middle side of the rotating disk, and the cam passes through the circular opening and is fixedly installed on the middle side of the frame. The left and rear sides of the cam... The side is a raised position. The first linear module is fixedly installed on the middle side of the frame by a bracket. The second linear module is fixedly installed on the output end of the first linear module. Multiple suction cups are fixedly installed on the output end of the second linear module by a bracket. The double-rod cylinder is fixedly installed on the middle side of the frame. The lifting mechanism is installed on the left side of the rotating disk. The rotating disk has four slots arranged in a circular array along the center of the rotating disk. The double-rod cylinder is located at the slot position on the left side of the rotating disk. The plate feeding device also includes: a horizontal alignment device and a vertical alignment device. The four horizontal alignment devices are arranged in a circular array along the central axis of the rotating disk on the upper side of the rotating disk. The vertical alignment device is installed on the horizontal alignment devices.

[0010] Furthermore, the lateral alignment device includes: an L-shaped fixing plate, a first bracket, a first sliding rod, a lateral baffle, a first limiting plate, and a first spring. The L-shaped fixing plate is fixedly installed on the outer ring of the upper side of the rotating disk. Multiple first brackets are fixedly installed on the inner ring of the upper side of the rotating disk. Each first bracket is slidably connected to two first sliding rods. The lateral baffle is fixedly installed on the end of the first sliding rod away from the center of the rotating disk. The first limiting plate is fixedly installed on the end of the first sliding rod close to the center of the rotating disk. The first spring is disposed on the first sliding rod, with one end of the first spring in close contact with the first bracket and the other end of the first spring in close contact with the first limiting plate.

[0011] Furthermore, the lateral alignment device also includes a pushing device, which is installed on the side wall of the lateral baffle on the left and rear sides of the rotating disk near the center of the rotating disk. The pushing device includes a support frame and guide wheels. The support frame is fixedly installed on the side wall of the lateral baffle near the center of the rotating disk. A plurality of guide wheels are rotatably connected to the support frame through a rotating shaft. The guide wheels are in close contact with the left and rear side walls of the cam.

[0012] Furthermore, the longitudinal alignment device includes: a second bracket, a second sliding rod, a longitudinal baffle, a second limiting plate, and a second spring. Multiple second brackets are fixedly installed on the side wall of the transverse baffle away from the center of the rotating disk. The second sliding rod is slidably connected to the second bracket. The longitudinal baffle is fixedly installed at one end of the second sliding rod near the L-shaped fixed plate. The second limiting plate is fixedly installed at one end of the second sliding rod away from the L-shaped fixed plate. The second spring is disposed on the second sliding rod, with one end of the second spring in close contact with the second bracket and the other end in close contact with the second limiting plate.

[0013] Furthermore, the welding strip feeding device includes: a third linear module, a third bracket, a first cylinder, a first pressure plate, a fourth bracket, a second cylinder, a cutter, a third cylinder, and a second pressure plate. The third linear module is fixedly installed on the right side of the frame, the third bracket is fixedly installed on the right side of the frame, the first cylinder is fixedly installed on the upper side of the third bracket, the first pressure plate is fixedly installed at the output end of the first cylinder, the fourth bracket is fixedly installed on the right side of the frame and located on the left side of the third bracket, the second cylinder is fixedly installed on the left side of the fourth bracket, the cutter is fixedly installed at the output end of the second cylinder, the third cylinder is fixedly installed on the right side of the fourth bracket, and the second pressure plate is fixedly installed at the output end of the third cylinder.

[0014] Furthermore, the welding strip feeding device also includes: an adjustable limiting device, with multiple adjustable limiting devices installed on the right side of the frame. Each adjustable limiting device includes: a fifth bracket, a guide rail, a slider, a shaped bracket, a reduction motor, and a lead screw. The fifth bracket is fixedly installed on the right side of the frame, located to the right of the third bracket. The guide rail is fixedly installed on the upper side of the fifth bracket. Multiple sliders are slidably connected to the guide rail. The shaped bracket is fixedly installed on the upper side of the slider. The reduction motor is fixedly installed on the front side wall of the fifth bracket. The lead screw is fixedly connected to the output shaft of the reduction motor via a coupling. The shaped bracket near the lead screw... The support is threaded to the end of the lead screw away from the geared motor. The upper side of the slider on the middle side of the guide rail is fixedly installed on the fifth support. Adjacent irregular supports are connected to each other by a connecting device. The connecting device includes: a first rotating plate, a second rotating plate, a third rotating plate, and a fourth rotating plate. The front sides of the first and second rotating plates are rotatably connected to the irregular supports by a rotating shaft. The rear sides of the third and fourth rotating plates are rotatably connected to the irregular supports by a rotating shaft. The rear side of the first rotating plate is rotatably connected to the front side of the third rotating plate by a rotating shaft. The rear side of the second rotating plate is rotatably connected to the front side of the fourth rotating plate by a rotating shaft.

[0015] The irregularly shaped bracket has a guide groove on its upper side.

[0016] Furthermore, the welding strip feeding device also includes: a fourth linear module, a fourth cylinder, a sixth bracket, a fifth cylinder, and a third pressure plate. Two fourth linear modules are fixedly installed on the middle side of the frame. The fourth cylinder is fixedly installed on the output end of the fourth linear module through the bracket. The sixth bracket is fixedly installed on the output end of the fourth cylinder. Multiple fifth cylinders are fixedly installed on the upper side of the sixth bracket. The third pressure plate is fixedly installed on the output end of the fifth cylinder.

[0017] Furthermore, the welding device includes: a fifth linear module, a vacuum belt conveyor, and infrared lamps. Two fifth linear modules are symmetrically fixedly installed in the middle of the frame, the vacuum belt conveyor is fixedly installed on the left side of the frame, and multiple infrared lamps are fixedly installed at the output end of the fifth linear module through brackets.

[0018] To better achieve the objectives of this invention, this invention also provides a method for easily adapting to photovoltaic cell string welding machines of different sizes, comprising the following steps:

[0019] Step 1: The output shaft of the geared motor rotates, which drives the lead screw to rotate. The rotation of the lead screw allows the irregular brackets close to the lead screw to move back and forth. The back and forth movement of the irregular brackets causes the parallelogram formed by the first rotating plate, the second rotating plate, the third rotating plate, and the fourth rotating plate to deform, so that each irregular bracket moves the same distance. The spacing between the welding wires is adjusted according to the specifications of the battery cell.

[0020] Step 2: Stack the battery cells on the side of the L-shaped fixing plate closest to the center of the rotating disk. The output end of the hollow rotating platform rotates, causing the rotating disk to rotate. The rotation of the rotating disk causes the horizontal alignment device and the vertical alignment device to rotate. The guide wheel of the horizontal alignment device behind the cam contacts the cam, causing the guide wheel to move away from the cam. The movement of the guide wheel away from the cam causes the support frame to move closer to the L-shaped fixing plate. The movement of the support frame closer to the L-shaped fixing plate causes the horizontal baffle to move closer to the L-shaped fixing plate, aligning the battery cells in the length direction. The output end of the double-rod cylinder extends, triggering both the horizontal alignment device and the vertical alignment device on the left side of the cam. The vertical baffle of the vertical alignment device contacts the output end of the double-rod cylinder, causing the vertical baffle to move towards the L-shaped fixing plate, aligning the battery cells in the length and width directions.

[0021] Step 3: Next, the output end of the second linear module moves downward, causing the suction cup to move downward to pick up the battery cell. The output end of the second linear module moves upward, causing the suction cup and battery cell to move upward. The output end of the first linear module moves to the left, causing the second linear module, suction cup, and battery cell to move to the left. The output end of the second linear module moves downward, causing the suction cup to move downward to place the battery cell on the vacuum belt conveyor of the welding device.

[0022] Step 4: The welding wire is guided by the guide groove on the irregular bracket. The output end of the first cylinder of the welding strip feeding device moves downward, causing the first pressure plate to move downward and clamp the welding wire. The output end of the third linear module moves to the left, causing the welding wire to move to the left. The output end of the third cylinder moves downward, causing the second pressure plate to move downward and clamp the welding wire. The output end of the fourth cylinder moves downward, causing the sixth bracket to move downward. The sixth bracket moves downward, causing the fifth cylinder and the third pressure plate to move downward. The output end of the fourth linear module moves to the right, allowing the welding wire to enter between the third pressure plate and the sixth bracket. The output end of the fifth cylinder moves downward, causing the third pressure plate to move downward and clamp the welding wire. The output end of the second cylinder moves downward, causing the cutter to move downward and cut the welding wire. The output end of the fourth cylinder moves upward, causing the sixth bracket to move upward and lift the welding wire a preset distance. The output end of the fourth linear module moves to the left, causing the welding wire to move to the left onto the battery cell of the vacuum belt conveyor.

[0023] Step 5: The battery cells and welding wire are laid flat on the vacuum belt conveyor of the welding device and slowly conveyed to the left by the vacuum belt conveyor until they stop under the infrared lamp. The output end of the fifth linear module moves downward, causing the infrared lamp to move downward. The infrared lamp starts to weld the battery cells and welding wire. After welding for a certain period of time, the vacuum belt conveyor continues to slowly convey to the left.

[0024] Compared with the prior art, the beneficial effects of the present invention are: 1. The present invention places multiple stacked battery cells between the horizontal alignment device and the vertical alignment device of the plate feeding device. The output end of the hollow rotating platform rotates to drive the rotating disk to rotate. The rotation of the rotating disk drives the horizontal alignment device and the vertical alignment device to rotate, so that the horizontal alignment device behind the cam is triggered to align the battery cells in the direction of length. The horizontal alignment device and the vertical alignment device on the left side of the cam are both triggered to align the battery cells in the direction of length and width. This is beneficial for aligning the battery cells in multiple directions while feeding, which is convenient for subsequent standard position feeding.

[0025] 2. The output shaft of the geared motor rotates, driving the lead screw to rotate. The rotation of the lead screw allows the irregularly shaped brackets close to the lead screw to move back and forth. The back and forth movement of the irregularly shaped brackets causes the parallelogram formed by the first rotating plate, the second rotating plate, the third rotating plate, and the fourth rotating plate to deform, so that each irregularly shaped bracket moves the same distance. Adjusting the spacing between the welding wires according to the specifications of the battery cells facilitates the rapid adjustment of the spacing between the guide grooves of the irregularly shaped brackets. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0028] Figure 2 This is a front view of the present invention;

[0029] Figure 3 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0030] Figure 4 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 3 ;

[0031] Figure 5 This is a side view of the present invention;

[0032] Figure 6 This is a top view of the present invention;

[0033] Figure 7 For along Figure 6 A partial structural schematic diagram of the cross-sectional view along the AA direction;

[0034] Figure 8 This is a partial structural schematic diagram of the welding strip feeding device of the present invention;

[0035] Figure 9 This is a top view of a partial structural schematic diagram of the welding strip feeding device of the present invention;

[0036] Figure 10 This is a schematic diagram of the structure of the sixth support of the present invention;

[0037] Figure 11 This is a partial structural schematic diagram of the sheet metal feeding device of the present invention;

[0038] Figure 12 This is a partial structural schematic diagram of the sheet metal feeding device of the present invention in an unclamped and aligned state;

[0039] Figure 13 This is a partial structural schematic diagram of the sheet material feeding device of the present invention, showing the clamping and alignment state.

[0040] The labels in the diagram represent:

[0041] 1. Frame; 2. Welding device; 21. Fifth linear module; 22. Vacuum belt conveyor; 23. Infrared lamp; 3. Sheet material feeding device; 31. Hollow rotary platform; 32. Rotary disc; 33. Cam; 34. First linear module; 35. Second linear module; 36. Suction cup; 37. Double-rod cylinder; 38. L-shaped fixing plate; 39. First bracket; 310. First sliding rod; 311. Transverse baffle; 312. First limiting plate; 313. First spring; 314. Support frame; 315. Guide wheel; 316. Second bracket; 317. Second sliding rod; 318. Longitudinal baffle; 319. Second limiting plate; 320. Second spring 321. Lifting mechanism; 4. Welding strip feeding device; 41. Third linear module; 42. Third bracket; 43. First cylinder; 44. First pressure plate; 45. Fourth bracket; 46. Second cylinder; 47. Cutter; 48. Third cylinder; 49. Second pressure plate; 410. Fifth bracket; 411. Guide rail; 412. Slider; 413. Irregular bracket; 414. Gear motor; 415. Lead screw; 416. First rotating plate; 417. Second rotating plate; 418. Third rotating plate; 419. Fourth rotating plate; 420. Fourth linear module; 421. Fourth cylinder; 422. Sixth bracket; 423. Fifth cylinder; 424. Third pressure plate. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0043] The present invention will be further described below with reference to embodiments.

[0044] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0045] Example 1: In some examples, please refer to Figures 1-13A photovoltaic cell string welding machine adaptable to different sizes includes a frame 1, and further includes a welding device 2, a plate feeding device 3, and a welding strip feeding device 4. The welding device 2 is installed on the left side of the frame 1, the plate feeding device 3 is installed on the middle side of the frame 1, and the welding strip feeding device 4 is installed on the right side of the frame 1. The plate feeding device 3 includes a hollow rotating platform 31, a rotating disk 32, a cam 33, a first linear module 34, a second linear module 35, a suction cup 36, a double-rod cylinder 37, and a lifting mechanism 321. The fixed end of the hollow rotating platform 31 is fixedly installed on the middle side of the frame 1, and the rotating disk 32 is fixedly installed on the output end of the hollow rotating platform 31. A circular opening is provided on the middle side of the rotating disk 32, and the cam 33 passes through the circular opening and is fixedly installed on the middle side of the frame 1. The left and rear sides of the cam 33 are protruding positions. The first linear module 34 is fixedly installed on the middle side of the frame 1 by a bracket. The second linear module 35 is fixedly installed on the output end of the first linear module 34. Multiple suction cups 36 are fixedly installed on the output end of the second linear module 35 by a bracket. The double-rod cylinder 37 is fixedly installed on the middle side of the frame 1. The lifting mechanism 321 is installed on the left side of the rotating disk 32. The rotating disk 32 has four slots arranged in a circular array along the center of the rotating disk 32. The double-rod cylinder 37 is located at the slot on the left side of the rotating disk 32. The plate feeding device 3 also includes: a transverse alignment device and a longitudinal alignment device. The four transverse alignment devices are arranged in a circular array along the central axis of the rotating disk 32 on the upper side of the rotating disk 32. The longitudinal alignment device is installed on the transverse alignment device. The lifting mechanism 321 can be configured as a ball screw lifting mechanism.

[0046] The sheet material feeding device 3 feeds the battery cells, the welding wire feeding device 4 feeds the welding wire, and the welding device 2 welds the battery cells together using the welding wire.

[0047] Multiple stacked battery cells are placed between the horizontal alignment device and the vertical alignment device of the sheet material feeding device 3. The output end of the hollow rotating platform 31 rotates, driving the rotating disk 32 to rotate. The rotation of the rotating disk 32 drives the horizontal alignment device and the vertical alignment device to rotate. The left and rear sides of the cam 33 are raised, which triggers the horizontal alignment device on the rear side of the cam 33 to align the battery cells along their length. This triggers both the horizontal alignment device and the vertical alignment device on the left side of the cam 33 to align the battery cells along their length and width. Then, the output end of the second linear module 35 moves downward, driving the suction cup 36 to... The downward movement picks up the battery cell, and the lifting mechanism 321 intermittently lifts the battery cell. The output end of the second linear module 35 moves upward, driving the suction cup 36 and the battery cell to move upward. The output end of the first linear module 34 moves to the left, driving the second linear module 35, the suction cup 36, and the battery cell to move to the left. The output end of the second linear module 35 moves downward, driving the suction cup 36 to move downward and place the battery cell on the welding device 2. The welding wire feeding device 4 feeds the welding wire. The welding device 2 welds the battery cells together with the welding wire, which is beneficial for feeding and aligning the battery cells in multiple directions at the same time, making it easier for subsequent standard position feeding.

[0048] The lateral alignment device includes: an L-shaped fixing plate 38, a first bracket 39, a first sliding rod 310, a lateral baffle 311, a first limiting plate 312, and a first spring 313. The L-shaped fixing plate 38 is fixedly installed on the outer ring of the upper side of the rotating disk 32. Multiple first brackets 39 are fixedly installed on the inner ring of the upper side of the rotating disk 32. Each first bracket 39 is slidably connected to two first sliding rods 310. The lateral baffle 311 is fixedly installed on the end of the first sliding rod 310 away from the center of the rotating disk 32. The first limiting plate 312 is fixedly installed on the end of the first sliding rod 310 close to the center of the rotating disk 32. The first spring 313 is disposed on the first sliding rod 310. One end of the first spring 313 is in close contact with the first bracket 39, and the other end of the first spring 313 is in close contact with the first limiting plate 312.

[0049] The transverse baffle 311 of the transverse alignment device moves toward the L-shaped fixing plate 38 to align the battery cells along their length, and the first spring 313 undergoes elastic deformation.

[0050] The lateral alignment device further includes a pushing device, which is installed on the side wall of the lateral baffle 311 on the left and rear sides of the rotating disk 32 near the center of the rotating disk 32. The pushing device includes a support frame 314 and guide wheels 315. The support frame 314 is fixedly installed on the side wall of the lateral baffle 311 near the center of the rotating disk 32. A plurality of guide wheels 315 are rotatably connected to the support frame 314 through a rotating shaft. The guide wheels 315 are in close contact with the left and rear side walls of the cam 33.

[0051] The guide wheel 315 contacts the cam 33, causing the guide wheel 315 to move away from the cam 33. The movement of the guide wheel 315 away from the cam 33 drives the support frame 314 to move away from the cam 33. The movement of the support frame 314 away from the cam 33 drives the transverse baffle 311 to move away from the cam 33.

[0052] The longitudinal alignment device includes: a second bracket 316, a second sliding rod 317, a longitudinal baffle 318, a second limiting plate 319, and a second spring 320. Multiple second brackets 316 are fixedly installed on the side wall of the transverse baffle 311 away from the center of the rotating disk 32. The second sliding rod 317 is slidably connected to the second bracket 316. The longitudinal baffle 318 is fixedly installed on one end of the second sliding rod 317 near the L-shaped fixing plate 38. The second limiting plate 319 is fixedly installed on one end of the second sliding rod 317 away from the L-shaped fixing plate 38. The second spring 320 is disposed on the second sliding rod 317, with one end of the second spring 320 in close contact with the second bracket 316 and the other end in close contact with the second limiting plate 319.

[0053] The output end of the double-rod cylinder 37 extends, and the longitudinal baffle 318 of the longitudinal alignment device contacts the output end of the double-rod cylinder 37, causing the longitudinal baffle 318 to move toward the L-shaped fixed plate 38. The second spring 320 undergoes elastic deformation to align the width direction of the battery cell.

[0054] Example 2: In some embodiments, such as Figures 1-13 As shown, in a preferred embodiment of the present invention, the welding strip feeding device 4 includes: a third linear module 41, a third bracket 42, a first cylinder 43, a first pressure plate 44, a fourth bracket 45, a second cylinder 46, a cutter 47, a third cylinder 48, and a second pressure plate 49. The third linear module 41 is fixedly installed on the right side of the frame 1, the third bracket 42 is fixedly installed on the right side of the frame 1, the first cylinder 43 is fixedly installed on the upper side of the third bracket 42, the first pressure plate 44 is fixedly installed at the output end of the first cylinder 43, the fourth bracket 45 is fixedly installed on the right side of the frame 1, and the fourth bracket 45 is located on the left side of the third bracket 42. The second cylinder 46 is fixedly installed on the left side of the fourth bracket 45, the cutter 47 is fixedly installed at the output end of the second cylinder 46, the third cylinder 48 is fixedly installed on the right side of the fourth bracket 45, and the second pressure plate 49 is fixedly installed at the output end of the third cylinder 48.

[0055] The output end of the first cylinder 43 of the welding wire feeding device 4 moves downward, causing the first pressure plate 44 to move downward and clamp the welding wire. The output end of the third linear module 41 moves to the left, causing the welding wire to move to the left. The output end of the third cylinder 48 moves downward, causing the second pressure plate 49 to move downward and clamp the welding wire. The output end of the second cylinder 46 moves downward, causing the cutter 47 to move downward and cut the welding wire to the appropriate length.

[0056] The welding strip feeding device 4 further includes: an adjustable limiting device. Multiple adjustable limiting devices are installed on the right side of the frame 1. Each adjustable limiting device includes: a fifth bracket 410, a guide rail 411, a slider 412, a shaped bracket 413, a reduction motor 414, and a lead screw 415. The fifth bracket 410 is fixedly installed on the right side of the frame 1, located to the right of the third bracket 42. The guide rail 411 is fixedly installed on the upper side of the fifth bracket 410. Multiple sliders 412 are slidably connected to the guide rail 411. The shaped bracket 413 is fixedly installed on the upper side of the sliders 412. The reduction motor 414 is fixedly installed on the front side wall of the fifth bracket 410. The lead screw 415 is fixedly connected to the output shaft of the reduction motor 414 via a coupling. The shaped bracket 413 near the lead screw 415 is screwed... A threaded connection is made to the end of the lead screw 415 away from the reduction motor 414. The upper side of the slider 412 on the middle side of the guide rail 411 is fixedly mounted on the fifth bracket 410. Adjacent irregular brackets 413 are connected to each other by a connecting device. The connecting device includes: a first rotating plate 416, a second rotating plate 417, a third rotating plate 418, and a fourth rotating plate 419. The front sides of the first rotating plate 416 and the second rotating plate 417 are rotatably connected to the irregular bracket 413 by a rotating shaft. The rear sides of the third rotating plate 418 and the fourth rotating plate 419 are rotatably connected to the irregular bracket 413 by a rotating shaft. The rear side of the first rotating plate 416 is rotatably connected to the front side of the third rotating plate 418 by a rotating shaft. The rear side of the second rotating plate 417 is rotatably connected to the front side of the fourth rotating plate 419 by a rotating shaft.

[0057] The irregularly shaped bracket 413 has a guide groove on its upper side for guiding the welding wire.

[0058] The output shaft of the geared motor 414 rotates, causing the lead screw 415 to rotate. The rotation of the lead screw 415 allows the irregularly shaped bracket 413 near the lead screw 415 to move back and forth. The back and forth movement of the irregularly shaped bracket 413 causes the parallelogram formed by the first rotating plate 416, the second rotating plate 417, the third rotating plate 418, and the fourth rotating plate 419 to deform, so that each irregularly shaped bracket 413 moves the same distance, which is beneficial for quickly adjusting the spacing between the guide grooves of the irregularly shaped bracket 413.

[0059] The welding strip feeding device 4 further includes: a fourth linear module 420, a fourth cylinder 421, a sixth bracket 422, a fifth cylinder 423, and a third pressure plate 424. Two fourth linear modules 420 are fixedly installed on the middle side of the frame 1. The fourth cylinder 421 is fixedly installed on the output end of the fourth linear module 420 through the bracket. The sixth bracket 422 is fixedly installed on the output end of the fourth cylinder 421. Multiple fifth cylinders 423 are fixedly installed on the upper side of the sixth bracket 422. The third pressure plate 424 is fixedly installed on the output end of the fifth cylinder 423.

[0060] The sixth bracket 422 is equipped with adjustable limiting devices on both the left and right sides.

[0061] The output end of the fourth cylinder 421 moves downward, causing the sixth bracket 422 to move downward. The downward movement of the sixth bracket 422 causes the fifth cylinder 423 and the third pressure plate 424 to move downward. The output end of the fourth linear module 420 moves to the right, causing the welding wire to enter between the third pressure plate 424 and the sixth bracket 422. The output end of the fifth cylinder 423 moves downward, causing the third pressure plate 424 to move downward, clamping the cut welding wire. The output end of the fourth cylinder 421 moves upward, causing the sixth bracket 422 to move upward, raising the welding wire by a preset distance. The output end of the fourth linear module 420 moves to the left, causing the welding wire to move to the left to the position of welding device 2.

[0062] The welding device 2 includes: a fifth linear module 21, a vacuum belt conveyor 22, and infrared lamps 23. Two fifth linear modules 21 are symmetrically fixedly installed on the middle side of the frame 1, the vacuum belt conveyor 22 is fixedly installed on the left side of the frame 1, and multiple infrared lamps 23 are fixedly installed on the output end of the fifth linear module 21 by brackets.

[0063] The battery cells and welding wire are laid flat on the vacuum belt conveyor 22 of the welding device 2. They are slowly conveyed to the left by the vacuum belt conveyor 22 and stop under the infrared lamp tube 23. The output end of the fifth linear module 21 moves downward, which drives the infrared lamp tube 23 to move downward. The infrared lamp tube 23 starts to weld the battery cells and welding wire. After welding for a certain period of time, the vacuum belt conveyor 22 continues to slowly convey to the left.

[0064] Example 3: In some embodiments, such as Figures 1-13 As shown, in a preferred embodiment of the present invention, a method for easily adapting photovoltaic cell string welding machines of different sizes includes the following steps:

[0065] Step 1: The output shaft of the geared motor 414 rotates, driving the lead screw 415 to rotate. The rotation of the lead screw 415 allows the irregular bracket 413 near the lead screw 415 to move back and forth. The back and forth movement of the irregular bracket 413 causes the parallelogram formed by the first rotating plate 416, the second rotating plate 417, the third rotating plate 418, and the fourth rotating plate 419 to deform, so that each irregular bracket 413 moves the same distance. The spacing between the welding wires is adjusted according to the specifications of the battery cell.

[0066] Step 2: Stack the battery cells on the side of the L-shaped fixing plate 38 closest to the center of the rotating disk 32. The output end of the hollow rotating platform 31 rotates, causing the rotating disk 32 to rotate. The rotation of the rotating disk 32 causes the horizontal alignment device and the vertical alignment device to rotate. The guide wheel 315 of the horizontal alignment device on the rear side of the cam 33 contacts the cam 33, causing the guide wheel 315 to move away from the cam 33. The movement of the guide wheel 315 away from the cam 33 causes the support frame 314 to move closer to the L-shaped fixing plate 38. The support frame 314 moves toward the L-shaped fixing plate 38, causing the transverse baffle 311 to move toward the L-shaped fixing plate 38, aligning the position of the battery cell in the length direction. The output end of the double-rod cylinder 37 extends, triggering both the transverse alignment device and the longitudinal alignment device on the left side of the cam 33. The longitudinal baffle 318 of the longitudinal alignment device contacts the output end of the double-rod cylinder 37, causing the longitudinal baffle 318 to move toward the L-shaped fixing plate 38, aligning the position of the battery cell in the length and width directions.

[0067] Step 3: Next, the output end of the second linear module 35 moves downward, causing the suction cup 36 to move downward to pick up the battery cell. The output end of the second linear module 35 moves upward, causing the suction cup 36 and the battery cell to move upward. The output end of the first linear module 34 moves to the left, causing the second linear module 35, the suction cup 36 and the battery cell to move to the left. The output end of the second linear module 35 moves downward, causing the suction cup 36 to move downward to place the battery cell on the vacuum belt conveyor 22 of the welding device 2.

[0068] Step 4: The welding wire is guided by the guide groove on the irregular bracket 413. The output end of the first cylinder 43 of the welding strip feeding device 4 moves downward, causing the first pressure plate 44 to move downward, clamping the welding wire. The output end of the third linear module 41 moves to the left, causing the welding wire to move to the left. The output end of the third cylinder 48 moves downward, causing the second pressure plate 49 to move downward, clamping the welding wire. The output end of the fourth cylinder 421 moves downward, causing the sixth bracket 422 to move downward. The downward movement of the sixth bracket 422 causes the fifth cylinder 423 and the third pressure plate 424 to move downward. The output end of the four linear module 420 moves to the right, causing the welding wire to enter between the third pressure plate 424 and the sixth bracket 422. The output end of the fifth cylinder 423 moves downward, causing the third pressure plate 424 to move downward, clamping the welding wire. The output end of the second cylinder 46 moves downward, causing the cutter 47 to move downward, cutting the welding wire. The output end of the fourth cylinder 421 moves upward, causing the sixth bracket 422 to move upward, raising the welding wire a preset distance. The output end of the fourth linear module 420 moves to the left, causing the welding wire to move to the left onto the battery cell of the vacuum belt conveyor 22.

[0069] Step 5: The battery cells and welding wire are laid flat on the vacuum belt conveyor 22 of the welding device 2. The vacuum belt conveyor 22 slowly conveys them to the left until they stop under the infrared lamp tube 23. The output end of the fifth linear module 21 moves downward, causing the infrared lamp tube 23 to move downward. The infrared lamp tube 23 starts to weld the battery cells and welding wire. After welding for a certain period of time, the vacuum belt conveyor 22 continues to slowly convey them to the left.

[0070] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A photovoltaic cell string welding machine that is easy to adapt to different sizes, comprising a frame (1), characterized in that, Also includes: The welding device (2), plate feeding device (3), and strip feeding device (4) are provided. The welding device (2) is installed on the left side of the frame (1), the plate feeding device (3) is installed on the middle side of the frame (1), and the strip feeding device (4) is installed on the right side of the frame (1). The plate feeding device (3) includes: a hollow rotating platform (31), a rotating disk (32), a cam (33), a first linear module (34), a second linear module (35), a suction cup (36), a double-rod cylinder (37), and a lifting mechanism (321). The fixed end of the hollow rotating platform (31) is fixedly installed on the middle side of the frame (1), and the rotating disk (32) is fixedly installed on the output end of the hollow rotating platform (31). A circular opening is provided on the middle side of the rotating disk (32), and the cam (33) is fixedly installed on the middle side of the frame (1) through the circular opening. The left and rear sides of the cam (33) are... At the protruding position, the first linear module (34) is fixedly installed on the middle side of the frame (1) by a bracket, the second linear module (35) is fixedly installed on the output end of the first linear module (34), a plurality of suction cups (36) are fixedly installed on the output end of the second linear module (35) by a bracket, the double-rod cylinder (37) is fixedly installed on the middle side of the frame (1), the lifting mechanism (321) is installed on the left side of the rotating disk (32), the rotating disk (32) has four slots arranged in a circular array along the center of the rotating disk (32), the double-rod cylinder (37) is set at the slot position on the left side of the rotating disk (32), the plate feeding device (3) further includes: a horizontal alignment device and a vertical alignment device, the four horizontal alignment devices are arranged in a circular array along the central axis of the rotating disk (32) on the upper side of the rotating disk (32), and the vertical alignment device is installed on the horizontal alignment device; wherein, The lateral alignment device includes: an L-shaped fixing plate (38), a first bracket (39), a first sliding rod (310), a lateral baffle (311), a first limiting plate (312), and a first spring (313). The L-shaped fixing plate (38) is fixedly installed on the upper outer ring of the rotating disk (32). Multiple first brackets (39) are fixedly installed on the upper inner ring of the rotating disk (32). Each first bracket (39) is slidably connected to two first sliding rods (310). The lateral baffle (311) is fixedly installed at the end of the first sliding rod (310) away from the center of the rotating disk (32). The first limiting plate (312) is fixedly installed at the end of the first sliding rod (310) close to the center of the rotating disk (32). The first spring (313) is disposed on the first sliding rod (310). One end of the first spring (313) is in close contact with the first bracket (39), and the other end of the first spring (313) is in close contact with the first limiting plate (312). The lateral alignment device further includes a pushing device, which is installed on the sidewall of the lateral baffle (311) on the left and rear sides of the rotating disk (32) near the center of the rotating disk (32). The pushing device includes a support frame (314) and guide wheels (315). The support frame (314) is fixedly installed on the sidewall of the lateral baffle (311) near the center of the rotating disk (32). A plurality of guide wheels (315) are rotatably connected to the support frame (314) via a rotating shaft. The guide wheels (315) are in close contact with the left and rear sidewalls of the cam (33). The longitudinal alignment device includes: a second bracket (316), a second sliding rod (317), a longitudinal baffle (318), a second limiting plate (319), and a second spring (320). A plurality of second brackets (316) are fixedly installed on the side wall of the transverse baffle (311) away from the center of the rotating disk (32). The second sliding rod (317) is slidably connected to the second bracket (316). The longitudinal baffle (318) is fixedly installed on one end of the second sliding rod (317) near the L-shaped fixing plate (38). The second limiting plate (319) is fixedly installed on one end of the second sliding rod (317) away from the L-shaped fixing plate (38). The second spring (320) is disposed on the second sliding rod (317). One end of the second spring (320) is in close contact with the second bracket (316), and the other end of the second spring (320) is in close contact with the second limiting plate (319).

2. The photovoltaic cell string welding machine according to claim 1, which is easy to adapt to different sizes, is characterized in that, The welding strip feeding device (4) includes: a third linear module (41), a third bracket (42), a first cylinder (43), a first pressure plate (44), a fourth bracket (45), a second cylinder (46), a cutter (47), a third cylinder (48), and a second pressure plate (49). The third linear module (41) is fixedly installed on the right side of the frame (1), the third bracket (42) is fixedly installed on the right side of the frame (1), and the first cylinder (43) is fixedly installed on the upper side of the third bracket (42). The pressure plate (44) is fixedly installed at the output end of the first cylinder (43), the fourth bracket (45) is fixedly installed on the right side of the frame (1), the fourth bracket (45) is located on the left side of the third bracket (42), the second cylinder (46) is fixedly installed on the left side of the fourth bracket (45), the cutter (47) is fixedly installed at the output end of the second cylinder (46), the third cylinder (48) is fixedly installed on the right side of the fourth bracket (45), and the second pressure plate (49) is fixedly installed at the output end of the third cylinder (48).

3. The photovoltaic cell string welding machine according to claim 2, which is easy to adapt to different sizes, is characterized in that, The welding strip feeding device (4) further includes: an adjustable limiting device. Multiple adjustable limiting devices are installed on the right side of the frame (1). The adjustable limiting device includes: a fifth bracket (410), a guide rail (411), a slider (412), a special-shaped bracket (413), a geared motor (414), and a lead screw (415). The fifth bracket (410) is fixedly installed on the right side of the frame (1). The fifth bracket (410) is located on the right side of the third bracket (42). The guide rail (411) is fixedly installed on the upper side of the fifth bracket (410). Multiple sliders (412) are slidably connected to the guide rail (411). The special-shaped bracket (413) is fixedly installed on the upper side of the slider (412). The geared motor (414) is fixedly installed on the front side wall of the fifth bracket (410). The lead screw (415) is fixedly connected to the output shaft of the geared motor (414) through a coupling. The special-shaped bracket (413) near the lead screw (415) is fixedly connected to the output shaft of the geared motor (414). 3) The threaded connection is located at the end of the lead screw (415) away from the geared motor (414). The upper side of the slider (412) on the middle side of the guide rail (411) is fixedly installed on the fifth bracket (410). The adjacent irregular brackets (413) are connected to each other by a connecting device. The connecting device includes: a first rotating plate (416), a second rotating plate (417), a third rotating plate (418), and a fourth rotating plate (419). The front sides of the first rotating plate (416) and the second rotating plate (417) are rotatably connected to the irregular bracket (413) by a rotating shaft. The rear sides of the third rotating plate (418) and the fourth rotating plate (419) are rotatably connected to the irregular bracket (413) by a rotating shaft. The rear side of the first rotating plate (416) is rotatably connected to the front side of the third rotating plate (418) by a rotating shaft. The rear side of the second rotating plate (417) is rotatably connected to the front side of the fourth rotating plate (419) by a rotating shaft.

4. The photovoltaic cell string welding machine according to claim 3, which is easy to adapt to different sizes, is characterized in that, The welding strip feeding device (4) further includes: a fourth linear module (420), a fourth cylinder (421), a sixth bracket (422), a fifth cylinder (423), and a third pressure plate (424). Two of the fourth linear modules (420) are fixedly installed on the middle side of the frame (1). The fourth cylinder (421) is fixedly installed on the output end of the fourth linear module (420) through the bracket. The sixth bracket (422) is fixedly installed on the output end of the fourth cylinder (421). Multiple fifth cylinders (423) are fixedly installed on the upper side of the sixth bracket (422). The third pressure plate (424) is fixedly installed on the output end of the fifth cylinder (423).

5. The photovoltaic cell string welding machine according to claim 4, which is easy to adapt to different sizes, is characterized in that, The welding device (2) includes: a fifth linear module (21), a vacuum belt conveyor (22) and infrared lamps (23). Two fifth linear modules (21) are symmetrically fixedly installed in the middle of the frame (1), the vacuum belt conveyor (22) is fixedly installed on the left side of the frame (1), and multiple infrared lamps (23) are fixedly installed at the output end of the fifth linear module (21) by a bracket.

6. A method for easily adapting to photovoltaic cell string bonding machines of different sizes, used in the photovoltaic cell string bonding machine of claim 5, characterized in that, Includes the following steps: Step 1: The output shaft of the geared motor (414) rotates, driving the lead screw (415) to rotate. The rotation of the lead screw (415) allows the irregular bracket (413) near the lead screw (415) to move back and forth. The back and forth movement of the irregular bracket (413) causes the parallelogram formed by the first rotating plate (416), the second rotating plate (417), the third rotating plate (418), and the fourth rotating plate (419) to deform, so that each irregular bracket (413) moves the same distance. The spacing between the welding wires is adjusted according to the specifications of the battery cell. Step 2: Stack the battery cells on the side of the L-shaped fixing plate (38) near the center of the rotating disk (32). The output end of the hollow rotating platform (31) rotates, causing the rotating disk (32) to rotate. The rotation of the rotating disk (32) causes the horizontal alignment device and the vertical alignment device to rotate. The guide wheel (315) of the horizontal alignment device on the rear side of the cam (33) contacts the cam (33), causing the guide wheel (315) to move away from the cam (33). The movement of the guide wheel (315) away from the cam (33) causes the support frame (314) to move closer to the L-shaped fixing plate (38). The direction of movement causes the support frame (314) to move towards the L-shaped fixing plate (38), which in turn causes the horizontal baffle (311) to move towards the L-shaped fixing plate (38), aligning the orientation of the battery cell in the length direction. The output end of the double-rod cylinder (37) extends, triggering both the horizontal alignment device and the vertical alignment device on the left side of the cam (33). The vertical baffle (318) of the vertical alignment device contacts the output end of the double-rod cylinder (37), causing the vertical baffle (318) to move towards the L-shaped fixing plate (38), aligning the orientation of the battery cell in the length and width directions. Step 3: Next, the output end of the second linear module (35) moves downward, driving the suction cup (36) to move downward to pick up the battery cell. The lifting mechanism (321) intermittently lifts the battery cell. The output end of the second linear module (35) moves upward, driving the suction cup (36) and the battery cell to move upward. The output end of the first linear module (34) moves to the left, driving the second linear module (35), the suction cup (36) and the battery cell to move to the left. The output end of the second linear module (35) moves downward, driving the suction cup (36) to move downward to place the battery cell on the vacuum belt conveyor (22) of the welding device (2). Step 4: The welding wire is guided by the guide groove on the irregular bracket (413). The output end of the first cylinder (43) of the welding strip feeding device (4) moves downward, driving the first pressure plate (44) to move downward and clamp the welding wire. The output end of the third linear module (41) moves to the left, driving the welding wire to move to the left. The output end of the third cylinder (48) moves downward, driving the second pressure plate (49) to move downward and clamp the welding wire. The output end of the fourth cylinder (421) moves downward, driving the sixth bracket (422) to move downward. The sixth bracket (422) moves downward, driving the fifth cylinder (423) and the third pressure plate (424) to move downward. The output end of the fourth linear module (420) moves to the right, causing the welding wire to enter between the third pressure plate (424) and the sixth bracket (422). The output end of the fifth cylinder (423) moves downward, causing the third pressure plate (424) to move downward, clamping the welding wire. The output end of the second cylinder (46) moves downward, causing the cutter (47) to move downward, cutting the welding wire. The output end of the fourth cylinder (421) moves upward, causing the sixth bracket (422) to move upward, raising the welding wire a preset distance. The output end of the fourth linear module (420) moves to the left, causing the welding wire to move to the left onto the battery cell of the vacuum belt conveyor (22). Step 5: The battery cells and welding wire are laid flat on the vacuum belt conveyor (22) of the welding device (2). The vacuum belt conveyor (22) slowly conveys them to the left until they stop under the infrared lamp tube (23). The output end of the fifth linear module (21) moves downward, driving the infrared lamp tube (23) to move downward. The infrared lamp tube (23) starts to weld the battery cells and welding wire. After welding for a certain period of time, the vacuum belt conveyor (22) continues to slowly convey them to the left.

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