Automatic series welding equipment applied to photovoltaic cell and working method thereof

Abstract

The application provides an automatic series welding equipment applied to photovoltaic cells and a working method thereof, which comprises a rack, a feeding device, a carrying device, a circulating conveying device and two or more welding strip supply devices, a series welding conveying mechanism and a cutting device. The feeding device and the circulating conveying device are arranged at two ends of the rack, the welding strip supply devices are arranged at two sides of the feeding device, the carrying device is arranged between the feeding device and the circulating conveying device, the feeding device is arranged at two sides of the circulating conveying device, the feeding device and the circulating conveying device convey the cells and the jig to the carrying device in opposite directions respectively, the carrying device synchronously grabs and transfers the cells and the jig to the series welding conveying mechanism, the welding strip supply devices convey the welding strips to the cells of the series welding conveying mechanism, the carrying device places the jig on the cells to press the welding strips, the series welding conveying mechanism welds the cells, and the cutting device cuts the cell series with a preset length.

Description

Technical Field

[0001] This invention relates to the field of solar cell technology, and more specifically to an automatic stringing equipment and its working method for photovoltaic solar cells. Background Technology

[0002] With the widespread application of solar energy, the solar photovoltaic panel industry has also flourished. In the production of solar panels, multiple cells and welding strips need to be stacked on a welding conveyor line in a predetermined stacking manner. The welding conveyor line then transports the cells to the welding position for welding into a cell string, and then the cell string is assembled with other components into one unit.

[0003] For example, Chinese patent application number 202010038706.2, published on May 22, 2020, discloses an automatic feeding IBC half-cell solar cell welding equipment and welding method, including a cell arrangement module, a cell welding module, a discharge conveyor and a cell string transfer module. The output end of the cell arrangement module is connected to the input end of the cell welding module. The cell arrangement module includes a feeding conveyor, a cell feeding device, a first cell conveyor and a second cell conveyor. The cell welding module includes a welding ribbon feeding device, a welding ribbon transfer device, a photowelding device, a fixture return device, a third cell conveyor, a fixture conveyor and a pressing and positioning fixture.

[0004] The aforementioned literature describes a fully automated process for solar cell string welding: a cell arrangement module for automatic cell arrangement and a cell welding module for adding and welding solder strips. However, high-efficiency string welding requires the solder strips, cells, and fixtures to work together during transport. If solder strip entanglement or asynchronous transport of cells and fixtures occurs, efficient welding becomes impossible. Furthermore, the cutting process lacks the capability to detect whether cutting has occurred, compromising cutting reliability. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic stringing equipment and working method for photovoltaic cells, which enables the welding ribbon, cells and fixtures to work together during the conveying process, thereby improving the stringing efficiency of cells and ensuring good cutting reliability.

[0006] To achieve the above objectives, the present invention provides an automatic stringing equipment for photovoltaic cells, comprising a frame, a feeding device, a conveying device, a circulating conveying device, two or more welding strip feeding devices, a stringing conveying mechanism, and a cutting device. The feeding device and the circulating conveying device are located at both ends of the frame, the welding strip feeding devices are located on both sides of the feeding device, and the conveying device is located between the feeding device and the circulating conveying device. The feeding device is located on both sides of the circulating conveying device. The feeding device and the circulating conveying device respectively convey the solar cells and the fixture to the conveying device in opposite directions. The device is equipped with two or more adsorption elements 1 and two or more adsorption elements 2 at its end. There is a gap between adsorption elements 1 and adsorption elements 2. The adsorption elements 1 and adsorption elements 2 on the conveying device simultaneously grab and transfer the battery cells and the fixture to the string welding conveying mechanism. After the conveying device places the battery cells on the string welding conveying mechanism, the welding strip feeding device conveys the welding strip to the battery cells on the string welding conveying mechanism. The conveying device places the fixture on the battery cells to press the welding strip. After the string welding conveying mechanism welds the battery cells, the cutting device cuts the battery cell strings of a preset length and detects whether the cutting device has cut the battery cell strings.

[0007] The aforementioned structure allows the battery cells and fixtures to be loaded separately from both ends of the frame, ensuring that the loading processes of the battery cells and fixtures do not interfere with each other and preventing confusion during transport. After the battery cells and fixtures are transported to the conveying device, they can be simultaneously gripped by the first and second adsorption components of the conveying device and transferred to the string welding conveyor. During the transfer, the welding ribbon is simultaneously transported to the string welding conveyor via the welding ribbon feeding device. This allows the welding ribbon to be transported onto the battery cells after they are placed on the string welding conveyor, and then the fixture is pressed onto the battery cells. This ensures that the welding ribbon, battery cells, and fixtures work together during transport, preventing confusion that could affect the string welding efficiency of the battery cells. At the same time, the cutting device cuts the battery cell strings and can also check whether cutting has been completed to ensure the cutting effect of the battery cell strings.

[0008] Another aspect of the present invention provides a method for operating an automatic stringing equipment for photovoltaic cells, comprising the following steps: S01 drives the material roll to tilt and rotate via the drive device, which facilitates the winding of the welding strip in the material roll and allows the welding strip to pass through the guide wheel assembly located on the lower left side of the material roll assembly. Since the material rolls in the two adjacent discharge groups are on the same vertical line, and the vertical line forms an angle with the line containing the center of the guide wheel corresponding to the material rolls in the two adjacent groups that are on the same vertical line, the direction of the welding strip winding out in each discharge group can be adjusted by the guide wheel assembly, so that the welding strips in the adjacent discharge groups are wound out in different directions into the dip welding mechanism. S1 conveys the battery cell-filled box to a preset position near the first conveying mechanism via the box conveying assembly and then stops. At the same time, the third conveying module drives the third conveying assembly to move laterally, thereby driving the third conveying gripping assembly to move onto the string welding conveying mechanism. Then, through the action of the third conveying assembly, the third conveying gripping assembly moves vertically and grips the fixture on the string welding conveying mechanism, and then moves the fixture to the fourth conveying mechanism. S2 drives the first conveying module to drive the first conveying gripping component to grip the battery cells in the material box, and then drives the first conveying module to drive the first conveying gripping component to move towards the second conveying mechanism onto the second conveyor belt. Then, the second conveying drive motor drives the second conveyor belt to transport the battery cells towards the transport device. At the same time, the fourth conveying mechanism drives the fixture to transport towards the transport device, so that the battery cells are transported to the transport device in opposite directions via the second conveyor belt and the fixture via the fourth conveying mechanism. S3 uses a robotic arm to move the first fixed frame above the second conveyor belt and simultaneously moves the second fixed frame above the fourth conveyor mechanism. After the robotic arm descends to a preset height, the two actions of suction component one picking up the battery cell and suction component two picking up the fixture are performed simultaneously. After suction, the robotic arm moves the battery cell and fixture to the top of the stringing conveyor mechanism. S4 first places the battery cell on the string welding conveyor via adsorption component one, then the welding strip from the dip welding mechanism is conveyed to the battery cell. After the welding strip reaches the preset length, the welding strip is cut by the welding strip cutting device. Then, the fixture is placed on the battery cell via adsorption component two, so that the fixture presses the welding strip. Then, the battery cell and welding strip are string welded together by the welding equipment set in the string welding conveyor to form a battery cell string. The welded battery cell string is conveyed to the cutting device for cutting.

[0009] Furthermore, step S0 also includes immersing the welding strip in a dip welding mechanism, and then shearing the immersed welding strip by a shearing device and conveying it to a string welding conveying mechanism. Step S1 also includes: After the battery cells in the hopper are picked up, the hopper conveying assembly continues to transport the hopper to the transmission assembly. Then, the hopper lifting cylinder drives the hopper on the transmission assembly to descend to the same height as the hopper recycling assembly. Next, the transmission assembly drives the hopper to the hopper recycling assembly for recycling. During this process, the conveying direction of the hopper is opposite to the recycling direction of the hopper. This allows the hopper to be recycled again at the loading point, improving the efficiency of reloading the battery cells into the hopper.

[0010] The above method allows for the separate transport of battery cells and fixtures from both ends of the frame, ensuring that the transport of battery cells and fixtures does not interfere with each other. This enables rapid retrieval of the battery cell loading bins during battery cell transport, allowing the bins to be directly returned to the loading point, thus improving the efficiency of battery cell reloading. During fixture transport, the fixtures placed on the stringing conveyor mechanism can be recycled and directly transported to the handling device, saving time and costs. This allows the handling device to simultaneously grab battery cells from the second conveyor mechanism and fixtures from the fourth conveyor mechanism and transfer them to the stringing conveyor mechanism, thereby improving the synchronous transport efficiency of battery cells and fixtures, and facilitating the next stringing process. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the conveying device in the invention.

[0012] Figure 2 This is a structural schematic diagram of the conveying device in the invention from another angle.

[0013] Figure 3 for Figure 1 Enlarged view of point A in the middle.

[0014] Figure 4 for Figure 2 Enlarged view of section B in the middle.

[0015] Figure 5 This is a schematic diagram of the structure of the present invention.

[0016] Figure 6 This is a schematic diagram of the material box conveying mechanism, material box recycling mechanism, and material box lifting mechanism in this invention.

[0017] Figure 7 This is a schematic diagram of the structure of the first conveying mechanism in this invention.

[0018] Figure 8 This is a schematic diagram of the structure of the second conveying mechanism in this invention.

[0019] Figure 9 This is a structural schematic diagram of the present invention from another angle.

[0020] Figure 10 This is a schematic diagram of the circulating conveying device in this invention.

[0021] Figure 11 This is a schematic diagram of the circulating conveying device in this invention from another angle.

[0022] Figure 12 for Figure 5 Enlarged view of point C in the middle.

[0023] Figure 13 for Figure 6 Enlarged view of point D in the middle.

[0024] Figure 14 for Figure 10 Enlarged view of point E in the middle.

[0025] Figure 15 This is a schematic diagram of the structure where the material roll is placed on the discharge mechanism.

[0026] Figure 16 This is the front view of the discharge mechanism.

[0027] Figure 17 for Figure 15 Enlarged view of section A1 in the middle.

[0028] Figure 18 for Figure 15 Enlarged view at B1 in the middle.

[0029] Figure 19 for Figure 15 Enlarged view of point C1.

[0030] Figure 20 This is the front view of the dip welding mechanism.

[0031] Figure 21 This is a bottom view of the dip welding mechanism.

[0032] Figure 22 This is a top view of the dip welding mechanism.

[0033] Figure 23 This is the front view of the cutting device.

[0034] Figure 24 for Figure 23 Enlarged view of section H in the middle.

[0035] Figure 25 for Figure 24 Enlarged view of section J in the middle.

[0036] Figure 26 This is a schematic diagram of the cutting device from another perspective.

[0037] Figure 27 An exploded view of the adjustment component and the first drive component.

[0038] Figure 28 Partial explosion of the cutting device Figure 1 .

[0039] Figure 29 Partial explosion of the cutting device Figure 2 . Detailed Implementation

[0040] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0041] like Figures 1 to 29 As shown, an automatic stringing equipment for photovoltaic cells includes a frame e7, a feeding device, a conveying device, a circulating conveying device, two or more welding strip feeding devices, a stringing conveying mechanism, and a cutting device. The feeding device and the circulating conveying device are located at both ends of the frame, and the conveying device is located between the feeding device and the circulating conveying device. The feeding device includes a first conveying mechanism e1 and two or more material box conveying mechanisms e2, a material box recycling mechanism e3, a material box lifting mechanism e4, and a second conveying mechanism e5. The material box conveying mechanism e2 is located above the material box recycling mechanism e3. The material box conveying mechanism e2 includes a material box conveying base e6 and a material box conveying assembly. The bottom of the material box conveying assembly is connected to the frame e7 through the material box conveying base e6. The material box conveying assembly includes a material box conveying drive shaft e8, a material box conveying drive motor (not shown in the figure), and two or more... The system includes a material box conveying drive wheel e9, a material box conveying driven wheel (not shown in the figure), and a material box conveying transmission belt e10. The material box conveying drive wheel e9 and the material box conveying driven wheel are respectively located at both ends of the material box conveying base e6. The material box conveying drive wheel e9 and the material box conveying driven wheel are connected by the material box conveying transmission belt e10. The two ends of the material box conveying transmission shaft e8 are respectively connected to the material box conveying drive wheel e9. The output end of the material box conveying drive motor located on one side of the material box conveying base e6 is connected to the material box conveying transmission shaft e8. In this embodiment, each material box conveying base e6 is provided with a material box conveying transmission shaft e8, a material box conveying drive motor, two material box conveying drive wheels e9, two material box conveying driven wheels (not shown in the figure), and a material box conveying transmission belt e10. The width between the material box conveying transmission belts e10 matches the width of the material box e11.

[0042] The hopper recycling mechanism e3 includes a hopper recycling base e12 and a hopper recycling assembly. The bottom of the hopper recycling assembly is connected to the frame via the hopper recycling base e12. The hopper recycling assembly includes a hopper recycling drive shaft e13, a hopper recycling drive motor (not shown in the figure), two or more hopper recycling drive wheels e15, hopper recycling driven wheels (not shown in the figure), and a hopper recycling transmission belt e16. The hopper recycling drive wheels e15 and the hopper recycling driven wheels are respectively located at both ends of the hopper recycling base e12. The hopper recycling drive wheels e15 and the hopper recycling driven wheels are connected via... The material box recycling drive belt e16 is connected to the material box recycling drive shaft e14. Both ends of the material box recycling drive shaft e14 are connected to the material box recycling drive wheel e15 respectively. The output end of the material box recycling drive motor located on one side of the material box recycling base e12 is connected to the material box recycling drive shaft e12. In this embodiment, each material box recycling base e12 is provided with a material box recycling drive shaft e12, a material box recycling drive motor, two material box recycling drive wheels e15, a material box recycling driven wheel, and a material box recycling drive belt e16. The width between the material box recycling drive belts e16 matches the width of the material box e11.

[0043] The material box lifting mechanism e4 is located at one end of the material box conveying mechanism e2 and the material box recycling mechanism e3. The material box lifting mechanism e4 includes a material box lifting cylinder e17, a material box lifting fixed seat e18, and a transmission assembly. The material box lifting cylinder e17 is connected to the frame e7 via the material box lifting fixed seat e18. The material box lifting fixed seat e18 is equipped with a material box lifting slide rail e19, and a material box lifting slider e20 is movably sleeved on the material box lifting slide rail e19. The transmission assembly is located on the base e24 and includes a transmission shaft e21, a drive motor, two or more drive wheels e22, driven wheels, and a transmission belt e23. The drive wheels e22 and driven wheels are respectively located at both ends of the base e24 and are connected by the transmission belt e23. The two ends of the transmission shaft e21 are... The drive motor output end, located on one side of the base e24, is connected to the transmission shaft e21. The material box lifting slider e20 is connected to the base e24. The output end of the material box lifting cylinder e17 is connected to the extension end of the material box lifting slider e20. In this embodiment, each base e24 is provided with a transmission shaft e21, a drive motor, two drive wheels e22, a driven wheel, and a transmission belt e23. The width between the transmission belts e23 matches the width of the material box e11, and the length of the transmission belts e23 matches the length of the material box e11, ensuring that a material box e11 is just delivered to the material box lifting mechanism e4. Limit sensors e25 are provided at both the upper and lower ends of the material box lifting slide rail e19 to prevent the material box lifting slider e20 from disengaging from the material box lifting slide rail e19.

[0044] With the above structural configuration, the material box e11 can be conveyed to a preset position by the material box conveying component and then stopped. After the battery cells e111 in the material box e11 are picked up, the material box conveying component continues to convey the material box e11 to the transmission component. Then, the material box lifting cylinder e17 drives the material box e11 on the transmission component to descend to the same height as the material box recycling component. Then, the transmission component drives the material box e11 to the material box recycling component for recycling. During this process, the conveying direction of the material box e11 is opposite to the recycling direction of the material box e11. This allows the material box to be recycled again at the material box loading point, improving the efficiency of reloading the battery cells into the material box.

[0045] One end of the first conveying mechanism e1 is located above the material box conveying mechanism e2. The first conveying mechanism e1 includes a first conveying fixed base e26, a first conveying drive motor e27, a first conveying module e28, and two or more first conveying gripping components. The first conveying fixed base e26 is connected to the frame e7. The first conveying module e28 is disposed on the first conveying fixed base e26. The output end of the first conveying drive motor e27 is connected to the first conveying module e28. The first conveying module e28 is provided with a first conveying slider that is slidably connected to the first conveying module e28. The first conveying gripping components are symmetrically arranged. The first conveying gripping assembly, located on both sides of the first conveying module e28, includes a first conveying drive cylinder e30, a first conveying connecting plate e31, and a first conveying connecting frame e32. One end of the first conveying connecting plate e31 is connected to the first conveying slider, and the first conveying drive cylinder e30 is located at the other end of the first conveying connecting plate e31. The output end of the first conveying drive cylinder e30 is connected to the first conveying connecting frame e32. The first conveying connecting frame e32 is provided with two or more first conveying suction cups e33 arranged side by side. The first conveying suction cups e33 are connected to an external air pipe, and the air pipe is connected to a vacuum pump.

[0046] The second conveying mechanism e5 is symmetrically arranged below the first conveying mechanism e1 about the first conveying mechanism e1. The second conveying mechanism e5 includes a second conveying fixed seat e34, a second conveying drive motor e35, a second conveying belt e36, a second conveying drive wheel e37, a second conveying driven wheel e38, a second conveying transmission belt e39, and two or more second conveying rotating shafts e40. The second conveying fixed seat e34 is connected to the frame e7. The second conveying rotating shafts e40 are located at both ends of the second conveying fixed seat e34, and the two ends of the second conveying rotating shafts e40 are rotatably connected to the second conveying fixed seat e34 through second conveying bearings. The second conveyor belt e36 is sleeved on the second conveyor shaft e40. One end of the second conveyor shaft e40 is connected to the second conveyor driven wheel e38. The second conveyor driving wheel e37 is connected to the output end of the second conveyor drive motor e35 located on one side of the second conveyor fixed seat e34. The second conveyor driving wheel e37 is connected to the second conveyor driven wheel e38 through the second conveyor transmission belt e39. In this embodiment, the second conveyor belt e36 is provided with vacuum adsorption holes for adsorbing the battery cells e111 placed on the second conveyor belt, preventing the battery cells e111 from swinging and deviating from the second conveyor belt e36 during the conveying process.

[0047] With the above structure, the first conveying gripping component can grip the battery cell in the material box, and then the first conveying drive motor e27 drives the first conveying module e28, causing the first conveying slider to slide in the first conveying module e28 and drive the first conveying gripping component to move. The first conveying drive cylinder e30 can adjust the height of the gripped battery cell in the vertical direction, so that the first conveying gripping component can transfer the battery cell e111 onto the second conveyor belt e36, and then the second conveyor belt e36 can transport the battery cell e111 to the handling device.

[0048] The conveying device is positioned between the feeding device and the circulating conveying device, and includes a robotic arm mounted on a support base z1. The robotic arm has a connecting rod mounted on its end furthest from the support base z1. The robotic arm includes a fixed arm z2, a rotating arm z3, and a connecting arm z4. One end of the fixed arm z2 is fixed to the support base z1, one end of the rotating arm z3 is rotatably connected to the fixed arm z2, and the other end of the rotating arm z3 is rotatably connected to the connecting arm z4. A drive motor (not shown in the figure) is installed inside the connecting arm z4. In this embodiment, the upper end of the connecting rod is a lead screw z5, and the lower end of the connecting rod is a cylinder z6. The end of arm z4 away from the rotating arm z3 is provided with a lead screw nut z7. The output end of the drive motor is connected to the lead screw nut z7 through a transmission belt. The lead screw nut z7 is sleeved on one end of the lead screw z5. The other end of the lead screw z5 is embedded in the cylinder z6 and rotatably connected to the cylinder z6. The bottom of the cylinder z6 is fixedly connected to the first fixed frame z8. In this way, the drive motor can drive the lead screw nut z7 to rotate, thereby making the lead screw z5 rise and fall in the vertical direction, thereby adjusting the height of the fixed frame. This allows the first adsorption component z11 and the second adsorption component z12 on the fixed frame to pick up the battery cell e111 and the fixture e22 respectively after adjusting to a suitable height.

[0049] In this embodiment, the device also includes a fixing frame, two or more adsorption components z11 and adsorption components z12. The fixing frame includes a fixing frame z8 and a fixing frame z9. The fixing frame z8 is located below the fixing frame z9 and is connected to the fixing frame z9 to form an integral unit. The middle part of the fixing frame z9 is a hollow structure. The bottom of the cylinder z6 passes through the hollow structure of the fixing frame z9 and is fixedly connected to the fixing frame z8, so that the cylinder z6, the fixing frame z8 and the fixing frame z9 are connected to form an integral unit. A step z10 is provided on the fixing frame z8 below the connection between the fixing frame z8 and the fixing frame z9. Specifically, one side of the bottom of the fixing frame z8 is recessed from the lower end of the fixing frame towards the upper end of the fixing frame to form a step z10. The width of the step z10 matches the width of the fixture e22. The step z10 is used to accommodate the fixture e22 sucked up by the adsorption component z12.

[0050] like Figure 1As shown, the first adsorption element z11 is connected to the bottom of the first fixing frame z8. Specifically, the first adsorption element z11 is fixedly connected to the other side of the bottom of the first fixing frame z8, and the ends of the first adsorption element z11 are in the same plane. The second adsorption element z12 is disposed at both ends of the second fixing frame z9. The two ends of the second fixing frame z9 located above the step z10 extend outward in the horizontal direction to form fixed ends z91. The second adsorption element z12 is disposed on the fixed ends z91. In this embodiment, two adsorption elements are disposed on each fixed end z91. Two adsorption components, z12 and z12, are arranged side by side along the width of the fixing frame z9. A proximity sensor z15 is provided between the two adsorption components z12. The lower end of the adsorption component z12 and the lower end of the proximity sensor z15 are in the same plane. When the proximity sensor z15 detects the fixture, the fixture e22 can be picked up by the adsorption component z12, so that the fixture e22 just stops in the step z10. In this embodiment, the first adsorption component z11 is a vacuum suction cup and the second adsorption component z12 is an electromagnet.

[0051] In this embodiment, since the fourth conveying mechanism for conveying the fixture and the second conveying mechanism for conveying the battery cells are at different positions and heights, in order to meet the requirement of synchronously picking up the battery cells e111 and the fixture e22, the plane where the lower end of the second adsorption member z12 is located is set higher than the plane where the lower end of the first adsorption member z11 is located. The height difference between the lower end of the second adsorption member z12 and the lower end of the first adsorption member z11 matches the height difference between the fourth conveying mechanism and the second conveying mechanism, thereby achieving simultaneous picking up. After the second adsorption member z12 picks up the fixture e22, the fixture e22 is accommodated in the step z10, and the battery cells e111 and the fixture e22 do not interfere with each other after being picked up.

[0052] The circulating conveying device includes two or more third conveying mechanisms e41 and fourth conveying mechanisms e42. The fourth conveying mechanism e42 is located at the bottom of the third conveying mechanism e41. Both the fourth conveying mechanism e42 and the third conveying mechanism e41 are symmetrically arranged about the conveying device. A welding conveying mechanism e43 is provided on one side of the fourth conveying mechanism e42. There are two third conveying mechanisms e41, symmetrically arranged. Each third conveying mechanism e41 includes a third conveying fixed base e44, a first third conveying module e45, a first third conveying drive motor e46, a third conveying assembly, a second third conveying module e47, a second third conveying drive motor e48, and a third conveying gripping assembly. The third conveying fixed base e44 is connected to the machine... On frame e7, a third conveying module e45 is mounted on a third conveying fixed base e44. The output end of a third conveying drive motor e46 is connected to the third conveying module e45. A third conveying slider e45 is slidably connected to the third conveying module e45. The third conveying slider e45 is connected to a third conveying assembly. The third conveying assembly includes a third conveying drive cylinder e49, a third conveying fixed base e50, a third conveying connecting plate e51, and a third conveying slider e52. The third conveying fixed base e50 is connected to the third conveying slider e44. The third conveying drive cylinder e49 is mounted on the third conveying fixed base e50. The output end of the third conveying drive cylinder e49 is connected to the third conveying connecting plate e44. 51. A third conveying fixed base 3e50 is provided with a third conveying slide rail 3e53. A third conveying slider 3e52 is slidably connected to the third conveying slide rail 3e53. A third conveying connecting plate 3e51 is connected to the third conveying slider 3e52. A third conveying module 2e47 is connected to the third conveying connecting plate 3e51 via a third conveying connecting plate 2e54. The output end of the third conveying drive motor 2e48 is connected to the third conveying module 2e47. A third conveying slider 2e57 is provided on the third conveying module 2e47 and is slidably connected to it. A third conveying gripping assembly is connected to the third conveying slider 2e57. The third conveying gripping assembly includes a third conveying connecting frame e55 and two or more third conveying fixed frames. The upper end of the third conveying connecting frame e55 is connected to the second third conveying slider e57. The lower ends of the third conveying connecting frame e55 are connected to the third conveying fixed frame e56 on both sides. The third conveying fixed frame e56 is equipped with two or more third conveying suction cups e58. The third conveying suction cups e58 are connected to external air pipes, which are connected to a vacuum pump. This allows the third conveying module e45 to drive the third conveying assembly to move laterally, thereby causing the third conveying gripping assembly to move between the fourth conveying mechanism e42 and the string welding conveying mechanism e43. The movement of the third conveying assembly also drives the third conveying gripping assembly to move vertically, adjusting the height difference between the fourth conveying mechanism e42 and the string welding conveying mechanism e43.The third conveying module e47 can drive the third conveying gripper component to move longitudinally. This movement in three different dimensions allows the third conveying gripper component to accurately grip the jig e22 on the welding conveyor mechanism and transfer it to the fourth conveyor mechanism for reuse. This eliminates the need for manual handling and re-transferring the jig to the welding conveyor mechanism, thus improving efficiency.

[0053] The fourth conveyor e42 is configured as two, and the two fourth conveyor mechanisms e42 are symmetrically arranged below the third conveyor fixed seat e44. The fourth conveyor mechanism e42 has the same structure as the material box conveyor mechanism e2 mentioned above, and will not be described again here.

[0054] The welding strip feeding device is located on both sides of the feeding device. The welding strip feeding device includes a discharging mechanism and a welding dip mechanism. The discharging mechanism includes a hanging plate 1, a support wheel assembly, a tensioning wheel assembly, and two or more discharging groups 2. Two hanging plates 1 are provided, each with a discharging area 3. Two adjacent discharging groups 2 are arranged parallel to each other within the discharging area 3. Each discharging group 2 includes two or more welding strip unwinding assemblies. In this embodiment, as shown... Figure 2 As shown, the discharge area 3 is equipped with three discharge groups 2, and each discharge group 2 has four welding strip unwinding assemblies. The welding strip unwinding assembly includes a guide wheel assembly 5 and a material roll assembly 6. The guide wheel assembly 5 is located on the lower left side of the material roll assembly 6, as shown. Figure 3 As shown, the guide wheel assembly 5 includes a guide wheel 51, a mounting base 52, a fixed shaft 53, and two limiting blocks 54. The mounting base 52 is fixed to one side of the hanging plate 1. One end of the fixed shaft 53 is fixed to the mounting base 52, and the other end of the fixed shaft 53 extends outward perpendicularly to the hanging plate 1 to form a free end. The guide wheel 51 is sleeved on the fixed shaft 53, and the two limiting blocks 54 are respectively sleeved on both ends of the guide wheel 51. This allows the welding strip to adjust the direction of its winding from the material roll assembly 6 through the guide wheel 51, so that it can be wound around the support wheel without tangling with the welding strip of the adjacent material roll assembly 6. At the same time, the limiting blocks 54 can restrict the movement of the guide wheel 51 in the axial direction of the fixed shaft 53.

[0055] The material roll assembly 6 includes a material roll 61, a drive device, a fixed shaft 62, and two limiting blocks 63. The drive device is fixed on the other side of the hanging plate 1. The drive device includes a drive motor 64 and a motor mounting base 65. The motor mounting base 65 is fixed on the other side of the hanging plate 1, and the drive motor 64 is fixed on the motor mounting base 65. The output end of the drive motor 64 is fixedly connected to one end of the fixed shaft 62. The other end of the fixed shaft 62 extends outward perpendicularly to the hanging plate 1 to form a free end. The material roll 61 is sleeved on the fixed shaft 62. A welding strip monitor 66 is provided above the material roll 61 to monitor whether there is welding strip on the material roll 61. This allows for timely replacement when there is no welding strip on the material roll 61. The two limiting blocks 63 are respectively sleeved on both ends of the material roll 61, which facilitates the drive device to drive the material roll 61 to rotate, so that the welding strip can be wound out of the material roll 61. The limiting blocks 63 can restrict the movement of the material roll in the axial direction of the fixed shaft 62.

[0056] In a vertical plane parallel to the hanging plate 1, the straight line L1 passing through the center of all guide wheels 51 in the same discharge group 2 is set parallel to the straight line L2 passing through the center of all material rolls 61. The straight line L1 passing through the center of all guide wheels 51 in the same discharge group 2 and the horizontal line L3 passing through the center of the guide wheels 51 are set downwards. In this embodiment, the angle formed by the straight line L1 and the horizontal line L3 is α, and the value of α ranges from 5° to 10°. The material rolls 61 in two adjacent discharge groups 2 are located on the same vertical line L4. The vertical line L4 is parallel to the straight line L2 passing through the center of the guide wheels 51 in the same discharge group 2. In group 2, the straight line L5 at the center of the guide wheel 51 corresponding to the material roll 2 located on the same vertical line is inclined inward. In this embodiment, the angle formed by the vertical line L4 and the straight line L5 is b, and the value of b is in the range of 5°~10°. This allows the discharge group 2 to be inclined with the horizontal line L3, making it easier for the welding strip to be wound out of the material roll assembly 6. The direction of the welding strip winding out can be adjusted by the guide wheel assembly 5, so that the winding out direction of the welding strip in adjacent discharge groups 2 is different, thereby effectively preventing the welding strip from getting tangled during the process of winding out to the support wheel assembly 7.

[0057] The support wheel assembly 7 has two or more components, which are arranged on the same straight line to form the welding strip support area 8. In this embodiment, there are four support wheel assemblies 7, which are located below the discharge area 2. Each support wheel assembly 7 includes a mounting base 71, a fixed shaft 72, and a support wheel 73. The mounting base 71 is fixedly mounted on one side of the hanging plate 1. One end of the fixed shaft 72 is fixed to the mounting base 71, and the other end of the fixed shaft 72 extends outward perpendicularly to the hanging plate 1 to form a free end. The support wheel 73 is sleeved on the fixed shaft 72. The support wheel 73 has two or more welding strip grooves 74 that match the welding strip, thereby preventing the welding strips wound from different welding strip unwinding assemblies from getting tangled when passing through the same support wheel 73. At the same time, it facilitates the welding strips wound from the welding strip unwinding assembly 6 to pass through the support wheel 73, which guides the welding strips, changes the direction of the welding strips, and allows the welding strips to enter the next process through the support wheel 73.

[0058] A fixing plate 11 is provided on one side of the hanging plate 1. The fixing plate 11 is located on one side of the welding strip support area 8. The fixing plate 11 is provided with two or more tensioning wheel assemblies 9. The tensioning wheel assembly 9 is arranged along the length direction of the fixing plate 11. The tensioning wheel assembly 9 includes a second mounting base 91, a second fixing shaft 92, and a tensioning wheel 93. The second mounting base 91 is fixedly mounted on the fixing plate 11. One end of the second fixing shaft 92 is fixed to the second mounting base 91. The other end of the second fixing shaft 92 extends outward perpendicularly to the fixing plate 11 to form a free end. The tensioning wheel 93 is sleeved on the second fixing shaft 92. The tensioning wheel 93 is provided with two or more receiving grooves 94 that match the welding strip. This can prevent the welding strip coming from different support wheel assemblies 7 from getting tangled when passing through the same tensioning wheel 93. At the same time, it is convenient for the welding strip to change direction after passing through the welding strip support area 8 and then be tensioned by the tensioning wheel assembly 9 on the fixing plate 11 to prevent the welding strip from becoming loose.

[0059] The dip soldering mechanism includes a support 2D and a material tank (not shown in the figure). An immersion tank 1D is mounted on the support 2D, containing flux. The material tank (not shown in the figure) stores the flux. The immersion tank 1D is equipped with a circulation assembly, which includes a circulation outlet 12D and a circulation inlet 11D. The circulation outlet 12D is located on one side of the bottom of the immersion tank 1D, and the circulation inlet 11D is located on the outer side of the wall of the immersion tank 1D. The circulation outlet 12D is connected to the material tank (not shown in the figure). A circulation device, including a circulation pump 2, is located on one side of the support 2D. 1D, the circulating pump 21D is equipped with a circulating pump inlet 212D and a circulating pump outlet 211D. The circulating pump inlet 212D is connected to the material tank (not shown in the figure), and the circulating pump outlet 211D is connected to the circulating inlet 11D. The immersion tank 1D contains flux, and the solder strip comes into contact with the flux through the immersion tank 1D to complete the processing of the solder strip. As the solder strip is processed, the flux in the immersion tank 1D will decrease. Therefore, it is necessary to connect the immersion tank 1D to the material tank (not shown in the figure) so that the flux in the immersion tank 1D can be replenished or replaced in time. A circulation outlet 12D is provided at the bottom of the soaking tank 1D, and a circulation inlet 11D is provided on the outer side of the wall of the soaking tank 1D. A circulation pump 21D is provided on one side of the support 2D. The circulation pump 21D is provided with a circulation pump inlet 212D and a circulation pump outlet 211D. The circulation outlet 12D is connected to the material tank (not shown in the figure), the circulation pump inlet 212D is connected to the material tank (not shown in the figure), and the circulation pump outlet 211D is connected to the circulation inlet 11D. When the solder strip is processed in the soaking tank 1D, a circulation component and circulation device are provided to prevent the flux from settling in the soaking tank 1D. When the flux is circulating, it first flows back to the material tank (not shown in the figure) through the circulation outlet 12D, and then the circulation pump works to make the flux flow from the material tank (not shown in the figure) into the circulation pump inlet 212D. This allows the flux to flow within the container (not shown in the diagram), preventing sedimentation at the bottom and promoting flux uniformity. This also prevents changes in the flux's chemical composition during storage, which could shorten its lifespan. The flux in the immersion tank 1D flows back to the container (not shown in the diagram) and then reaches the circulation pump 21D. The circulation pump outlet 211D connects to the circulation inlet 11D, allowing the flux to flow back into the immersion tank 1D. Therefore, the flux flows out and then back into the immersion tank 1D, preventing it from remaining stagnant at the bottom and forming sediment. This ensures the flux is in optimal working condition, improving the processing efficiency and quality of the solder strip.

[0060] The bottom of the soaking tank 1D is also equipped with a water outlet 13D, a flux inlet 14D, and a first discharge outlet 15D. The water outlet 13D is located at the bottom of the soaking tank 1D. When cleaning the soaking tank 1D is required, flux is discharged through the water outlet 13D, thus cleaning the soaking tank 1D. A flux inlet 14D is located on one side of the bottom of the soaking tank 1D. The flux inlet 14D is connected to a material tank (not shown in the figure). After cleaning the soaking tank 1D, when flux needs to be injected into the soaking tank 1D... Flux is injected into the immersion tank 1D through the replenishment port 14D. A first discharge port 15D is provided on the other side of the bottom of the immersion tank 1D. The first discharge port 15D is connected to the material tank (not shown in the figure). When there is too much flux in the immersion tank 1D, the flux can be flowed back to the material tank (not shown in the figure) through the first discharge port 15D, so that the flux concentration in the immersion tank 1D is maintained at the proper level, and the flux can play an effective role when the solder strip is processed in the immersion tank 1D.

[0061] A second discharge port 16D is provided on one side of the circulation inlet 11D. The second discharge port 16D is connected to the material tank (not shown in the figure). When adjusting the flux concentration, the flux can flow out to the material tank (not shown in the figure) through the second discharge port 16D.

[0062] The interior of the soaking tank 1 is recessed along the direction of the water outlet 13D. This recess in the interior of the soaking tank 1D along the water outlet direction allows the flux to be removed more quickly when the soaking tank 1D needs to be cleaned.

[0063] A front guide wheel 3D is installed at one end of the immersion tank 1D, a middle guide wheel 4D is provided in the middle of the length direction of the immersion tank 1D, and a rear guide wheel 5D is provided at the end of the immersion tank 1D away from the front guide wheel 3D. The welding strip moves in the immersion tank 1D under the traction of the front guide wheel 3D, the middle guide wheel 4D and the rear guide wheel 5D, so that the welding strip comes into contact with the flux, and then the welding strip moves to the outside of the immersion tank 1D.

[0064] Pressure rods 31D are provided at both ends above the front guide wheel 3D and the rear guide wheel 5D. The pressure rods 31D limit the height of the welding strip entering and exiting the immersion tank 1D so as to complete the immersion smoothly.

[0065] A detector 6D is installed between the rear guide wheel 5D and the middle guide wheel 4D. The detector 6D is installed between the rear guide wheel 5D and the middle guide wheel 4D in the immersion tank 1D. It can check the depth of flux in the immersion tank 1D and add or remove flux in time to meet the immersion depth of the solder strip.

[0066] A handle 7D is installed on one side of the soaking tank 1D along its length, which facilitates the installation and subsequent maintenance of the soaking tank 1D.

[0067] The flux tank (not shown in the figure), as described in CN 215624286 U, is used to store flux. The flux tank is equipped with connection points to the circulation outlet of the immersion tank, the replenishment port, the first discharge port, the second discharge port, and the circulation pump inlet, so that the flux can reach the flux tank through the circulation outlet, the first discharge port, and the second discharge port, and so that the flux can reach the replenishment port and the circulation pump inlet through the flux tank.

[0068] In this embodiment, the welding equipment and the welding strip shearing device installed in the string welding conveying mechanism are both existing technologies and will not be described in detail here.

[0069] The cutting device includes a frame 1B, with a front guide mechanism 2B and a rear guide mechanism 4B respectively arranged on both sides of the frame 1B. A middle guide mechanism 3B is arranged between the front guide mechanism 2B and the rear guide mechanism 4B. The middle guide mechanism 3B includes a movable base 35B, and a moving component 5B is arranged between the movable base 35B and the frame 1B. A conveyor belt 6B is sleeved between the front guide mechanism 2B, the middle guide mechanism 3B, and the rear guide mechanism 4B. A movable frame 31B and an adjusting component 33B are arranged on the middle guide mechanism 3B. A cutting blade device 3 is arranged on the movable frame 31B. 2B and a detection device, the detection device including a receiver and a transmitter, are respectively arranged on both sides of the moving frame 31B, forming a detection channel. A cutting device 32B is arranged above the detection channel. The cutting device 32B includes a drive cylinder 321B and a cutting assembly. The cutting assembly is connected to the output shaft of the drive cylinder 321B. A front guide mechanism 2B, a middle guide mechanism 3B and a rear guide mechanism 4B are respectively arranged on the frame 1B. A transmission mechanism is sleeved on the front guide mechanism 2B, the middle guide mechanism 3B and the rear guide mechanism 4B. The conveyor belt 6B, when the welding strip moves to the front guide mechanism 2B, can sequentially move the welding strip from the front guide mechanism 2B to the middle guide mechanism 3B and the rear guide mechanism 4B, and complete the cutting of the welding strip in the middle guide mechanism 3B. The segmented guide mechanism makes maintenance and replacement of parts easier. The middle guide mechanism 3B is equipped with a moving component 5B and a moving frame 31B. The moving component 5B can help adjust the tension of the conveyor belt 6B, and the moving frame 31B has a receiver and a transmitter on both sides, forming a detection channel. Above the detection channel, there is a drive cylinder 321B and a cutting blade assembly. The cutting blade assembly is connected to the output shaft of the drive cylinder 321B. The transmitter emits a beam of light, which passes through the detection channel and is received by the receiver. When the drive cylinder 321B moves the cutting blade assembly and blocks the light, the receiver receives a change in the light signal, thus knowing that the cutting blade assembly has reached the preset position, and thus knowing the status of the cutting of the welding strip and that cutting has been carried out. Then, the cutting device can be moved upward by controlling it. Specifically, the drive motor of the cutting device can be manually started to move upward.

[0070] In this embodiment, the transmitter is an infrared transmitter and the receiver is an infrared receiver. The infrared transmitter emits laser light, which is then received by the receiver to form a detection channel. The transmitter and receiver are located diagonally opposite each other on the moving frame, and the positions of the light emitted by the transmitter and receiver correspond to the upper surface of the fabric to be cut on the cutting device and the conveyor belt, so as to accurately detect the cutting situation. The emission principle of the transmitter and the reception principle of the receiver are existing technologies and will not be described in detail here.

[0071] The movable frame 31B includes a cutting table 313B, a front plate 312B, and an upper plate 311B. The cutting table 313B is positioned above the base 34B. The upper plate 311B is equipped with a drive cylinder 321B, the output shaft of which passes through the upper plate 311B. Guide rails 3121B are located on both sides of the front plate 312B, respectively, on both sides of the output shaft of the drive cylinder 321B. The cutting blade assembly includes a cutting blade holder 322B and a cutting blade body 323B. The upper part of the cutter holder 322B is connected to the output shaft of the drive cylinder 321B, and the lower part of the cutter holder 322B is connected to the cutter body 323B. The detection channel is located above the cutting table 313B. When the output shaft of the drive cylinder 321B drives the cutter holder 322B to move, the cutter holder 322B drives the cutter body 323B to move, so that the cutter body 323B can cut the welding strip. When the cutter body 323B completely cuts the welding strip, it will completely block the light in the detection channel.

[0072] The output shaft of the drive cylinder 321B is provided with a first disc 3211B and a second disc 3212B. The cutter holder 322B is provided with a notch 3221B, and a protrusion 3222B is provided above the notch 3221B. The first disc 3211B is fitted inside the notch 3221B, and the second disc 3212B abuts against the upper surface of the protrusion 3222B. The output shaft of the drive cylinder 321B is provided with a first disc 3211B and a second disc 3212B. The cutter holder 322B is provided with a notch 3221B. The 221B is fitted with a first disc 3211B. The lower surface of the first disc 3211B abuts against the lower surface of the notch 3221B, the upper surface of the first disc 3211B abuts against the lower surface of the protrusion 3222B, and the lower surface of the second disc 3212B abuts against the upper surface of the protrusion 3222B. The arrangement of the first disc 3211B, the second disc 3212B, and the notch 3221B makes the output shaft of the drive cylinder 321B firmly connected to the cutter holder 322B, thereby better driving the movement of the cutter holder 322B.

[0073] The cutter holder 322B is provided with first sliding members 3223B on both sides. The first sliding members 3223B are slidably connected to the guide rail 3121B. When the output shaft of the drive cylinder 321B drives the cutter holder 322B to move, the cutter holder 322B moves along the direction of the guide rail 3121B.

[0074] Adjustment assembly 33B includes an adjustment rod 332B and an adjustment bolt 332B. The adjustment bolt 332B abuts against the upper surface of the base 34B and is threadedly connected to the adjustment rod 332B. The base 34B has a groove 343B, and a fourth roller 341B is disposed within the groove 343B. The adjustment rod 332B is fixedly connected to the fourth roller 341B. A tensioning wheel is rotatably mounted on the fourth roller 341B, and a conveyor belt 6B is disposed outside the tensioning wheel. The adjustment bolt 332B and the adjustment rod 332B are connected. The 2B threaded connection is used. The adjusting rod 332B is fixedly connected to the fourth roller 341B. When the adjusting bolt 332B is rotated, the adjusting rod 332B can move up or down relative to the adjusting bolt 332B. When the adjusting rod 332B moves, it drives the fourth roller 341B to move within the groove 343B. If the conveyor belt 6B becomes loose during long-term use, the position of the fourth roller 341B can be adjusted by rotating the adjusting bolt 332B, thereby making the conveyor belt 6B tensioned.

[0075] The front guide mechanism 2B includes a front guide seat 21B, a first drive assembly 22B, a first transmission shaft, a second roller 24B, and a third roller 25B. The front guide seat 21B is respectively disposed on both sides of the frame 1B. A first sleeve seat 211B is disposed above the front guide seat 21B. The first transmission shaft is sleeved between the first sleeve seats 211B. The first drive assembly 22B is drively connected to the first transmission shaft. In this embodiment, the first drive assembly 22B and the first transmission shaft are connected by a belt. The second roller 24B is disposed below the first transmission shaft, and the third roller 25B is disposed below the second roller 24B. The middle guide mechanism 3B includes a base 34B, a fourth roller 341B, and a fifth roller 342B. The base 34B is respectively disposed on both sides of the movable seat 35B. The fourth roller 341B is disposed in the middle of the base 34B. The fifth roller 342B is disposed on both sides above the fourth roller 341B. The rear guide mechanism 4B includes a rear guide seat 21B, a first drive assembly 22B, a first transmission shaft, a second roller 24B, and a third roller 342B. Guide seat 41B, sixth roller 42B, and seventh roller 43B are respectively arranged on both sides of frame 1B. The sixth roller 42B is sleeved above the rear guide seat 41B, and the seventh roller 43B is arranged below the sixth roller 42B. The first rotating shaft 24B is rotatably connected to the first sleeve seat 211B. The inner side of the conveyor belt 6B passes through the first rotating shaft 24B to the fifth roller 342B, and then the outer side of the conveyor belt 6B passes through the fourth roller 341B. Then the inner side of the conveyor belt 6B passes through another fifth roller 342B from top to bottom, passing through the sixth roller 42B and the seventh roller 43B to the third roller 25B. Then the outer side of the conveyor belt 6B reaches the second roller 24B, and then the inner side of the conveyor belt 6B reaches the first drive shaft, completing the closed-loop rotation of the conveyor belt 6B, so that the conveyor belt 6B can rotate between the front guide mechanism 2B, the middle guide mechanism 3B, and the rear guide mechanism 4B.

[0076] The first drive assembly 22B includes a first drive body 221B, a first belt 223B, and a first gear 222B. The first gear 222B is connected to a first transmission shaft. The first belt 223B is sleeved between the first drive body 221B and the first gear 222B. The first drive body 221B drives the first gear 222B to rotate through the first belt 223B. The first gear 222B is fixedly connected to a first rotating shaft 24B. That is, the rotation of the first gear 222B can drive the first rotating shaft 24B to rotate, thereby driving the transmission belt to rotate.

[0077] The moving assembly 5B includes a second motor 51B, a lead screw 53B, and a second sleeve seat 52B. The second sleeve seats 52B are respectively disposed on both sides of the frame 1B. The output shaft of the second motor 51B is connected to the lead screw 53B. The lead screw 53B is sleeved between the two second sleeves. The moving seat 35B is sleeved on the lead screw 53B. The lead screw 53B is rotatably connected to the second sleeves, and the moving seat 35B is rotatably connected to the lead screw 53B. The second motor 51B can drive the lead screw 53B to rotate, thereby causing the lead screw 53B to rotate within the moving seat 35B, forming a lead screw and nut structure, which in turn causes the moving seat 35B to move relative to the lead screw 53B.

[0078] The lead screw 53B is provided with second guide rails 3121 on both sides, and the bottom of the movable seat 35B is provided with second sliding parts on both sides. The second sliding parts are slidably connected to the second guide rails 3121. A stop is also provided on one side of the movable seat 35B. A second sensor 11B is provided on the side of the frame 1B corresponding to the stop. The second sensor 11B is a photoelectric switch sensor. When the second motor 51B drives the movable seat 35B to move, the movable seat 35B moves along the direction of the second guide rails 3121. When the stop on the movable seat 35B moves to the corresponding position of the photoelectric switch sensor, the photoelectric sensor provides the second motor 51B with the position information of the movable seat 35B, and adjusts the working condition of the second motor 51B through this position information, such as speeding up or slowing down the rotation speed.

[0079] A method for operating an automated stringing equipment for photovoltaic cells includes the following specific steps: S01 drives the material roll 61 to tilt and rotate via the drive device, which facilitates the winding of the welding strip in the material roll 61 and allows the welding strip to pass through the guide wheel assembly 5 located on the lower left side of the material roll assembly. Since the material rolls in the two adjacent groups of discharge groups are on the same vertical line, and the vertical line forms an angle with the line containing the center of the guide wheel corresponding to the material rolls in the two adjacent groups that are on the same vertical line, in this embodiment, the first material roll assembly 6 of each of the three groups of discharge groups is on the same vertical line, and the guide wheel assembly 5 corresponding to the first material roll assembly 6 of each of the three groups of discharge groups is also on the same vertical line. An angle is formed between the two lines, and the direction of the welding strip winding out in each group of discharge groups can be adjusted by the guide wheel assembly, so that the welding strips in the adjacent groups of discharge groups are wound out in different directions to the dip welding mechanism. The welding strip is dipped by the dip welding mechanism, and the dipped welding strip is cut by the shearing device and then conveyed to the string welding conveying mechanism. S1 transports the battery cell-filled box e11 to a preset position near the first conveying mechanism e1 via the box conveying assembly and then stops. At the same time, the third conveying module e45 drives the third conveying assembly to move laterally, thereby driving the third conveying gripping assembly to move onto the string welding conveying mechanism e43. Then, through the action of the third conveying assembly, the third conveying gripping assembly moves vertically and grips the fixture on the string welding conveying mechanism e43. The fixture is then transferred to the fourth conveying mechanism e42. S2 drives the first conveying module e28 to drive the first conveying gripping component to grip the battery cell in the material box e11. Then, the first conveying module e28 drives the first conveying gripping component to move towards the second conveying mechanism e5 onto the second conveyor belt e36. Then, the second conveying drive motor e35 drives the second conveyor belt e36 to convey the battery cell e111 towards the transport device. At the same time, the fourth conveying mechanism drives the fixture to move towards the transport device. Thus, the battery cell e11 is conveyed to the transport device in opposite directions via the second conveyor belt e36 and the fixture e22 via the fourth conveying mechanism e42. S3 moves the first fixed frame z8 above the second conveyor belt e36 via the robotic arm, and simultaneously moves the second fixed frame z9 above the fourth conveyor mechanism e42. After the robotic arm descends to the preset height, the two actions of the first adsorption component z11 picking up the battery cell e111 and the second adsorption component z12 picking up the fixture e22 are performed simultaneously. After adsorption, the robotic arm moves the battery cell e111 and the fixture e22 to the top of the string welding conveyor mechanism e43. S4 first places the battery cell e111 on the string welding conveyor e43 through the adsorption component z11, and then the welding strip that has passed through the dip welding mechanism is conveyed to the battery cell e111. After the welding strip reaches the preset length, the welding strip is cut by the welding strip cutting device. Then, the fixture e22 is placed on the battery cell e111 through the adsorption component z12, so that the fixture e22 presses the welding strip. Then, the welding equipment set in the string welding conveyor e43 is used to string the battery cell e111 and the welding strip to form a battery cell string. The welded battery cell string is conveyed to the cutting device for cutting.

[0080] Step S1 also includes: After the solar cells in the material box e11 are picked up, the material box conveying assembly continues to convey the material box e11 to the transmission assembly. Then, the material box lifting cylinder e17 drives the material box e11 on the transmission assembly to descend to the same height as the material box recycling assembly. Then, the transmission assembly drives the material box e11 to the material box recycling assembly for recycling. During this process, the conveying direction of the material box e11 is opposite to the recycling direction of the material box e11. This allows the material box to be recycled again at the material box loading point, improving the efficiency of reloading solar cells into the material box.

[0081] The above method allows for the separate transport of battery cells and fixtures from both ends of the frame, ensuring that the transport of battery cells and fixtures does not interfere with each other. This enables rapid retrieval of the battery cell loading bins during battery cell transport, allowing the bins to be directly returned to the loading point, thus improving the efficiency of battery cell reloading. During fixture transport, the fixtures placed on the stringing conveyor mechanism can be recycled and directly transported to the handling device, saving time and costs. This allows the handling device to simultaneously grab battery cells from the second conveyor mechanism and fixtures from the fourth conveyor mechanism and transfer them to the stringing conveyor mechanism, thereby improving the synchronous transport efficiency of battery cells and fixtures, and facilitating the next stringing process.

[0082] In step S4 of this embodiment, the process of cutting the battery cell string by the cutting device is as follows: A front guide mechanism 2B, a middle guide mechanism 3B and a rear guide mechanism 4B are provided on the frame 1B and a conveyor belt 6B is fitted on it. When the welding strip moves to the front guide mechanism 2B, the conveyor belt 6B can move the welding strip from the front guide mechanism 2B to the middle guide mechanism 3B and the rear guide mechanism 4B in sequence, and the cutting of the welding strip is completed in the middle guide mechanism 3B. When the welding strip moves to the predetermined position and needs to be cut, the conveyor belt 6B stops rotating, and the drive cylinder 321B drives the cutter body 323B to move downward, thereby completing the cutting of the welding strip. The cut part is moved out of the frame 1B by the conveyor belt 6B on the rear guide mechanism 4B. The next part of the welding strip to be cut is moved through the area of ​​the middle guide mechanism 3B by the conveyor belt 6B on the front guide mechanism 2B to the area of ​​the conveyor belt 6B on the rear guide mechanism 4B, and then the cutting of the welding strip continues. On both sides of the movable frame 31B, there are corresponding receivers and transmitters, which form a detection channel. Above the detection channel, there is a drive cylinder 321B and a cutting blade assembly. The cutting blade assembly is connected to the output shaft of the drive cylinder 321B. The transmitter emits a beam of light, which passes through to be received by the receiver. When the drive cylinder 321B moves the cutting blade assembly and blocks the light, the receiver receives a change in the light signal, thereby knowing whether the cutting blade assembly has reached the preset position, and thus knowing the cutting status of the welding strip.

Claims

1. An automatic stringing equipment for photovoltaic cells, characterized in that: The system includes a frame, a feeding device, a conveying device, a circulating conveyor, two or more welding strip feeding devices, a string welding conveyor mechanism, and a cutting device. The feeding device and the circulating conveyor are located at both ends of the frame, the welding strip feeding devices are located on both sides of the feeding device, and the conveying device is located between the feeding device and the circulating conveyor. The feeding device and the circulating conveyor convey the battery cells and the fixture to the conveying device in opposite directions. The end of the conveying device is equipped with two or more adsorption elements 1 and two or more adsorption elements 2, with a gap between the adsorption elements 1 and adsorption elements 2. The adsorption elements 1 and adsorption elements 2 on the conveying device simultaneously grab and transfer the battery cells and the fixture to the string welding conveyor mechanism. After the conveying device places the battery cells on the string welding conveyor mechanism, the welding strip feeding device conveys the welding strip to the battery cells on the string welding conveyor mechanism. The conveying device places the fixture on the battery cells and presses the welding strip. After the string welding conveyor mechanism welds the battery cells, the cutting device cuts the battery cell strings of a preset length and detects whether the cutting device has cut the battery cell strings. The feeding device includes a first conveying mechanism and two or more material box conveying mechanisms, a material box recycling mechanism, a material box lifting mechanism, and a second conveying mechanism. After the battery cells in the material box are picked up, the material box conveying component continues to convey the material box to the transmission component. Then, the material box lifting cylinder drives the material box on the transmission component to descend to the same height as the material box recycling component. Then, the transmission component drives the material box to be conveyed to the material box recycling component for recycling. The circulating conveying device includes two or more third conveying mechanisms and a fourth conveying mechanism. The fourth conveying mechanism is located at the bottom of the third conveying mechanism. Both the fourth conveying mechanism and the third conveying mechanism are symmetrically arranged about the conveying device. The plane where the lower end of the second adsorption component is located is set higher than the plane where the lower end of the first adsorption component is located. The height difference between the lower end of the second adsorption component and the lower end of the first adsorption component matches the height difference between the fourth conveying mechanism and the second conveying mechanism, so that they can be picked up at the same time. After the second attachment picks up the fixture, the fixture is contained in the step, and the battery cell and the fixture do not interfere with each other after being picked up. The welding strip feeding device includes a discharging mechanism and a welding dip mechanism. The discharging mechanism includes a hanging plate, a support wheel assembly, a tension wheel assembly, and two or more discharging groups. The hanging plate has a discharging area, and two adjacent discharging groups are arranged parallel to each other within the discharging area. Each discharging group includes two or more welding strip unwinding assemblies. The welding strip unwinding assembly includes a guide wheel assembly and a strip roll assembly. The guide wheel assembly is located on the lower left side of the strip roll assembly. The guide wheel assembly includes guide wheels, and the strip roll assembly includes strip rolls. In a vertical plane parallel to the hanging plate, a straight line passing through the center of all guide wheels and passing through the center of all strip rolls in the same discharging group... The straight lines are set parallel to each other. The straight line passing through the center of all guide wheels in the same discharge group is inclined downwards from the horizontal straight line of the hanging plate. The material rolls in the discharge groups of two adjacent groups are on the same vertical line. The vertical line is inclined inwards from the straight line passing through the center of the guide wheel corresponding to the material rolls in the two adjacent groups that are on the same vertical line. Two or more support wheel assemblies are on the same straight line to form a welding strip support area. A tensioning wheel assembly is set on one side of the welding strip support area. The height of one end of the welding strip support area is higher than that of the tensioning wheel assembly. After the welding strip changes direction after passing through the welding strip support area, it is tensioned by the tensioning wheel assembly. The detection device in the cutting device includes a receiver and a transmitter, which are respectively arranged on both sides of the moving frame. The transmitter and receiver form a detection channel. A drive cylinder and a cutting blade assembly are arranged above the detection channel. The cutting blade assembly is connected to the output shaft of the drive cylinder. The transmitter emits a beam of light, which passes through the detection channel and is received by the receiver. When the drive cylinder moves the cutting blade assembly and blocks the light, the receiver receives a change in the light signal, indicating that the cutting blade assembly has reached the preset position, and thus the cutting status of the welding strip is known.

2. The automatic stringing equipment for photovoltaic cells according to claim 1, characterized in that: The material box lifting mechanism is located at one end of the material box conveying mechanism and the material box recycling mechanism. One end of the first conveying mechanism is located above the material box conveying mechanism, and the second conveying mechanism is symmetrically located below the first conveying mechanism. The bottom of the box conveying assembly is connected to the frame via a box conveying base. The box conveying assembly includes a box conveying drive shaft, a box conveying drive motor, two or more box conveying drive wheels, a box conveying driven wheel, and a box conveying transmission belt. The box conveying drive wheels and the box conveying driven wheels are respectively located at both ends of the box conveying base. The box conveying drive wheels and the box conveying driven wheels are connected by the box conveying transmission belt. Both ends of the box conveying drive shaft are respectively connected to the box conveying drive wheels. The output end of the box conveying drive motor located on one side of the box conveying base is connected to the box conveying drive shaft. The material box lifting mechanism includes a material box lifting cylinder, a material box lifting fixed base, and a transmission assembly. The material box lifting cylinder is connected to the frame through the material box lifting fixed base. The material box lifting fixed base is equipped with a material box lifting slide rail, and a material box lifting slider is movably sleeved on the material box lifting slide rail. The transmission assembly includes a transmission shaft, a drive motor, two or more drive wheels, driven wheels, and a transmission belt. The drive wheels and driven wheels are respectively located at both ends of the base and are connected by the transmission belt. Both ends of the transmission shaft are connected to the drive wheels. The output end of the drive motor located on one side of the base is connected to the transmission shaft. The material box lifting slider is connected to the base. The output end of the material box lifting cylinder is connected to the extension end of the material box lifting slider. The bin recycling mechanism includes a bin recycling base and a bin recycling assembly. The bottom of the bin recycling assembly is connected to the frame via the bin recycling base. The bin recycling assembly includes a bin recycling drive shaft, a bin recycling drive motor, two or more bin recycling drive wheels, a bin recycling driven wheel, and a bin recycling transmission belt. The drive wheels and driven wheels are respectively located at both ends of the bin recycling base and are connected by the bin recycling transmission belt. Both ends of the bin recycling drive shaft are connected to the drive wheels. The output end of the bin recycling drive motor, located on one side of the bin recycling base, is connected to the bin recycling drive shaft.

3. The automatic stringing equipment for photovoltaic cells according to claim 1, characterized in that: The first conveying mechanism includes a first conveying fixed base, a first conveying drive motor, a first conveying module, and two or more first conveying gripping components. The first conveying fixed base is connected to the frame, the first conveying module is disposed on the first conveying fixed base, the output end of the first conveying drive motor is connected to the first conveying module, the first conveying module is provided with a first conveying slider that is slidably connected to the first conveying module, the first conveying gripping components are symmetrically disposed on both sides of the first conveying module, and the first conveying gripping component includes a first conveying drive cylinder, a first conveying connecting plate, and a first conveying connecting frame. One end of the first conveying connecting plate is connected to the first conveying slider, the first conveying drive cylinder is disposed at the other end of the first conveying connecting plate, the output end of the first conveying drive cylinder is connected to the first conveying connecting frame, and the first conveying connecting frame is provided with two or more first conveying suction cups. The second conveying mechanism includes a second conveying fixed base, a second conveying drive motor, a second conveying belt, a second conveying drive wheel, a second conveying driven wheel, a second conveying transmission belt, and two or more second conveying shafts. The second conveying fixed base is connected to the frame, and the second conveying shafts are located at both ends of the second conveying fixed base. The two ends of the second conveying shafts are rotatably connected to the second conveying fixed base through second conveying bearings. The second conveying belt is sleeved on the second conveying shafts, and one end of the second conveying shafts is connected to the second conveying driven wheel. The second conveying drive wheel is connected to the output end of the second conveying drive motor located on one side of the second conveying fixed base, and the second conveying drive wheel is connected to the second conveying driven wheel through the second conveying transmission belt.

4. The automatic stringing equipment for photovoltaic cells according to claim 1, characterized in that: The handling device also includes a robotic arm and a fixed frame. The robotic arm is mounted on a support base and has a connecting rod. The fixed frame includes a fixed frame one and a fixed frame two. Fixed frame one is located below fixed frame two and is connected to fixed frame two to form an integral unit. The connecting rod passes through fixed frame two and is fixedly connected to fixed frame one. Adsorption element one is connected to the bottom of fixed frame one, and adsorption element two is located at both ends of fixed frame two. There is a gap between adsorption element one and adsorption element two.

5. An automatic stringing equipment for photovoltaic cells according to claim 1, characterized in that: The third conveying mechanism includes a third conveying fixed base, a third conveying module one, a third conveying drive motor one, a third conveying assembly, a third conveying module two, a third conveying drive motor two, and a third conveying gripping assembly. The third conveying fixed base is connected to the frame. The third conveying module one is mounted on the third conveying fixed base. The output end of the third conveying drive motor one is connected to the third conveying module one. The third conveying module one is equipped with a third conveying slider one that is slidably connected to the third conveying module one. The third conveying slider one is connected to the third conveying assembly. The third conveying assembly includes a third conveying drive cylinder three, a third conveying fixed base three, a third conveying connecting plate three, and a third conveying slider three. The output end of the third conveying drive cylinder three is connected to the third conveying connecting plate three. The third conveying fixed base three is connected to the third conveying slider one. The third conveying drive cylinder three is mounted on the third conveying fixed base three. On the third conveying fixed base three, there is a third conveying slide rail three, a third conveying slider three slidably connected to the third conveying slider three, a third conveying connecting plate three connected to the third conveying slider three, a third conveying module two connected to the third conveying connecting plate two through the third conveying connecting plate two, the output end of the third conveying drive motor two connected to the third conveying module two, a third conveying slider two slidably connected to the third conveying module two on the third conveying module two, a third conveying gripping assembly connected to the third conveying slider two, the third conveying gripping assembly includes a third conveying connecting frame and two or more third conveying fixed frames, the upper end of the third conveying connecting frame is connected to the third conveying slider two, the lower ends of the third conveying connecting frame are respectively connected to the third conveying fixed frames on both sides, and two or more third conveying suction cups are provided on the third conveying fixed frames.

6. An automatic stringing equipment for photovoltaic cells according to claim 1, characterized in that: The dip soldering mechanism includes a support frame and a material tank. The support frame is equipped with a dip tank containing flux. The material tank is used to store flux. The dip tank is equipped with a circulation component, which includes a circulation outlet and a circulation inlet. The circulation outlet is located on one side of the bottom of the dip tank, and the circulation inlet is located on the outer side of the dip tank wall. The circulation outlet is connected to the material tank. A circulation device is provided on one side of the support frame. The circulation device includes a circulation pump, which has a circulation pump inlet and a circulation pump outlet. The circulation pump inlet is connected to the material tank, and the circulation pump outlet is connected to the circulation inlet.

7. An automatic stringing equipment for photovoltaic cells according to claim 1, characterized in that: The cutting device includes a frame, with a front guide mechanism and a rear guide mechanism respectively arranged on both sides of the frame. A middle guide mechanism is arranged between the front guide mechanism and the rear guide mechanism. The middle guide mechanism includes a movable seat. A movable component is arranged between the movable seat and the frame. A conveyor belt is sleeved between the front guide mechanism, the middle guide mechanism and the rear guide mechanism. A movable frame is arranged on the movable seat. A cutting device and a detection device are arranged on the movable frame. The cutting device is arranged along the extension direction of the detection channel.

8. A method for operating an automatic stringing equipment for photovoltaic cells according to any one of claims 1 to 7, characterized in that: Includes the following steps: S1 drives the material roll to tilt and rotate via a drive device, which facilitates the winding of the welding strip from the material roll. The welding strip passes through the guide wheel assembly located on the lower left side of the material roll assembly. Since the material rolls in two adjacent discharge groups are on the same vertical line, and the vertical line forms an angle with the line containing the center of the guide wheel corresponding to the material rolls in the two adjacent groups that are on the same vertical line, the height of one end of the welding strip support area is higher than the tension wheel assembly. After the welding strip changes direction after passing through the welding strip support area, it is tensioned by the tension wheel assembly. The guide wheel assembly can then adjust the direction of the welding strip winding out in each discharge group, so that the welding strips in adjacent discharge groups are wound out in different directions into the dip welding mechanism. The welding strip is dipped in the dip welding mechanism, and after being dipped, the welding strip is cut by a shearing device and then conveyed to the string welding conveyor mechanism. S2 uses a material box conveying assembly to transport a material box filled with battery cells towards a preset position near the first conveying mechanism and then stops. Simultaneously, the third conveying module drives the third conveying assembly to move laterally, which in turn moves the third conveying gripping assembly onto the stringing conveying mechanism. Then, through the movement of the third conveying assembly, the third conveying gripping assembly moves vertically and grips the fixture on the stringing conveying mechanism, and then moves the fixture to the fourth conveying mechanism. After all the battery cells in the material box have been gripped, the material box conveying assembly continues to transport the material box to the transmission assembly. Then, the material box lifting cylinder drives the material box on the transmission assembly to descend to the same height as the material box recycling assembly. Then, the transmission assembly drives the material box to the material box recycling assembly for recycling. During this process, the conveying direction of the material box and the recycling direction of the material box are opposite. S3 uses the first conveying module to drive the first conveying gripping component to grip the battery cells in the material box, and then uses the first conveying module to drive the first conveying gripping component to move towards the second conveying mechanism onto the second conveyor belt. Then, the second conveying drive motor drives the second conveyor belt to transport the battery cells towards the transport device. At the same time, the fourth conveying mechanism drives the fixture to transport towards the transport device, so that the battery cells are transported to the transport device in opposite directions via the second conveyor belt and the fixture via the fourth conveying mechanism. S4 uses a robotic arm to move the first fixed frame above the second conveyor belt, and at the same time moves the second fixed frame above the fourth conveyor mechanism. After the robotic arm descends to a suitable height, the two actions of suction device 1 picking up the battery cell and suction device 2 picking up the fixture are performed simultaneously. After suction, the robotic arm moves the battery cell and fixture to the top of the stringing conveyor mechanism. S5 first places the battery cell on the string welding conveyor via adsorption component one, then the welding strip that has passed through the dip welding mechanism is conveyed to the battery cell. After the welding strip reaches the preset length, the welding strip is cut by the welding strip cutting device. Then, the fixture is placed on the battery cell via adsorption component two, so that the fixture presses the welding strip. Then, the battery cell and welding strip are string welded together by the welding equipment set in the string welding conveyor to form a battery cell string. The welded battery cell string is conveyed to the cutting device for cutting.

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