A busbar feeding mechanism for stacked grid solar cells

Abstract

This invention provides a busbar feeding mechanism for stacked-grid solar cells, comprising: a feeding assembly including an adjustable upper conveying mechanism and a lower conveying mechanism fixed to the substrate; the upper conveying mechanism includes an upper floating plate and an upper correction wheel and a driven wheel disposed on the upper floating plate; the lower conveying mechanism includes a lower correction wheel and a driving wheel; a pulling assembly including a pulling moving mechanism, a gripper mechanism disposed at the moving end of the pulling moving mechanism, and a clamping drive for controlling the closing or opening of the gripper mechanism; the gripper mechanism includes an upper gripper embedded with a first conductive sheet and a lower gripper embedded with a second conductive sheet; and a cutting assembly including a cutting table, a cutting blade, and a cutting lifting unit for driving the cutting blade to move up and down. It has a high degree of automation, with precise and stable feeding of the busbars by the feeding and pulling assemblies, and can also detect incoming materials, providing quality assurance for automated welding.

Description

Technical Field

[0001] This utility model relates to the field of battery processing technology, and in particular to a busbar feeding mechanism for stacked grid solar cells. Background Technology

[0002] As an emerging process for photovoltaic cells, stacked grid cells require rapid and stable feeding and welding of busbars and conductive wires in automated production. Traditional busbar welding methods involve manual feeding and welding of busbars and conductive wires, but this feeding and welding method is inefficient and easily leads to unstable welding quality. Inaccurate and unstable manual or traditional machine feeding can also easily damage the cells on the cell string. Utility Model Content

[0003] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a busbar feeding mechanism for stacked grid solar cells. This mechanism is highly automated, featuring a feeding component and a pulling component that accurately and stably deliver the busbars. It can also detect incoming materials, providing quality assurance for automated welding.

[0004] The embodiments of this utility model are achieved through the following technical solutions:

[0005] A busbar feeding mechanism for a stacked grid solar cell includes:

[0006] The feeding assembly includes an upper conveying mechanism that can be adjusted up and down and a lower conveying mechanism fixed to the substrate. The upper conveying mechanism includes an upper floating plate and an upper correcting wheel and a driven wheel disposed on the upper floating plate. The lower conveying mechanism includes a lower correcting wheel corresponding to the upper correcting wheel and a driving wheel corresponding to the driven wheel.

[0007] A material pulling assembly includes a material pulling moving mechanism, a gripper mechanism disposed at the moving end of the material pulling moving mechanism, and a clamping drive for controlling the closing or opening of the gripper mechanism; the gripper mechanism includes an upper gripper with a first conductive sheet embedded in it and a lower gripper with a second conductive sheet embedded in it.

[0008] The cutting assembly includes a cutting table, a cutting blade, and a cutting lifting unit for driving the cutting blade to move up and down.

[0009] According to a preferred embodiment, the upper floating plate is further provided with a guide wheel, the guide wheel being located on the side of the upper correction wheel away from the driven wheel.

[0010] According to a preferred embodiment, the upper floating plate is provided with a distance adjustment mechanism for adjusting the distance between the upper floating plate and the substrate, the outer wall of the substrate is provided with a first threaded hole, and the distance adjustment mechanism includes a distance adjustment screw for matching the first threaded hole.

[0011] According to a preferred embodiment, the adjusting screw is fitted with an elastic element.

[0012] According to a preferred embodiment, the system further includes at least two carrier assemblies, a pressing assembly disposed above one of the carrier assemblies, a laser assembly located above the pressing assembly, and a first turntable. The at least two carriers are evenly distributed on the first turntable. The pressing assembly includes a pressing plate connected to a pressing lifting member and a pressing bracket, and the pressing bracket is disposed on one side of the first turntable.

[0013] The carrier assembly includes a carrier plate and a clamping block disposed above the carrier plate, and a clamping telescopic member that causes the clamping block to press down on the busbar.

[0014] According to a preferred embodiment, it further includes a fine-tuning component and a cell delivery component located on one side of the fine-tuning component;

[0015] The fine-tuning component includes a multi-axis adjustment base, and the first turntable and the pressing bracket are both disposed on the top of the multi-axis adjustment base;

[0016] The cell delivery assembly includes a second turntable and a plurality of fixtures evenly distributed on the second turntable; the second turntable causes the fixtures to move closer to the carrier plate, and some of the cells located on the fixtures extend onto the carrier plate;

[0017] The laser assembly includes a laser support and a laser welding unit. The laser support is located on one side of the first turntable, and the laser welding unit is located on the top of the laser support.

[0018] According to a preferred embodiment, the top surface of the carrier plate is provided with a plurality of adsorption holes and a positioning structure, wherein the positioning structure is located on one side of the adsorption holes.

[0019] According to a preferred embodiment, the multi-axis adjustment base includes an X-axis moving unit, a Y-axis moving unit, and an adjustment platform. The X-axis moving unit is used to adjust the position of the adjustment platform in the X-axis direction, and the Y-axis moving unit is used to adjust the position of the adjustment platform in the Y-axis direction.

[0020] According to a preferred embodiment, at least two of the upper correction wheels and at least two of the lower correction wheels are arranged in an alternating vertical distribution.

[0021] According to a preferred embodiment, the first conductive sheet and the second conductive sheet are not on the same vertical plane.

[0022] The technical solution of this utility model embodiment has at least the following advantages and beneficial effects:

[0023] This invention features a high degree of automation, with a feeding assembly and a pulling assembly for precise and stable conveying of the busbars. The drive wheel provides traction, while the upper and lower correction wheels correct and convey the busbars. Finally, the pulling assembly further provides traction to ensure the busbars enter precisely. The first and second conductive sheets simultaneously detect the incoming material, and the cutter precisely cuts the busbars based on the detection, providing quality assurance for automated welding. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of the feeding assembly provided in an embodiment of the present utility model;

[0026] Figure 2 A three-dimensional structural schematic diagram of the feeding assembly provided in an embodiment of this utility model;

[0027] Figure 3 This is a schematic diagram of the material pulling assembly provided in an embodiment of the present utility model;

[0028] Figure 4 A three-dimensional structural diagram of the gripper mechanism provided in an embodiment of this utility model;

[0029] Figure 5 A schematic diagram of the busbar feeding mechanism for a stacked grid solar cell provided in this embodiment of the present invention;

[0030] Figure 6 Another three-dimensional structural schematic diagram of a busbar feeding mechanism for a stacked grid solar cell provided in this embodiment of the present invention;

[0031] Figure 7 A three-dimensional structural schematic diagram of the vehicle assembly provided in an embodiment of this utility model;

[0032] Figure 8 for Figure 7 A partial structural diagram;

[0033] Figure 9 This is a rear view structural schematic diagram of a busbar feeding mechanism for a stacked grid solar cell provided in an embodiment of the present utility model.

[0034] Icons: 1. Upper floating plate; 2. Upper alignment wheel; 3. Driven wheel; 4. Base plate; 5. Lower alignment wheel; 6. Drive wheel; 7. Upper gripper; 71. First conductive sheet; 8. Lower gripper; 81. Second conductive sheet; 9. Clamping drive unit; 10. Cutting table; 11. Cutting blade; 12. Cutting lifting unit; 13. Guide wheel; 14. Adjusting screw; 15. Elastic element; 16. First turntable; 17. Pressing lifting unit; 18. Pressing plate; 19. Pressing bracket; 20. Carrier plate; 21. Pressing block; 22. Pressing telescopic component; 23. Multi-axis adjustment base; 24. Second turntable; 25. Fixture; 26. Laser bracket; 27. Laser welding unit; 28. Adsorption hole; 29. ​​Material pulling and moving mechanism; 30. Positioning structure. Detailed Implementation

[0035] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0036] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0038] Example

[0039] Please refer to Figures 1 to 9 A busbar feeding mechanism for stacked grid solar cells, comprising:

[0040] The feeding assembly includes an upper conveying mechanism that can be adjusted up and down and a lower conveying mechanism fixed to the base plate 4. The upper conveying mechanism includes an upper floating plate 1 and an upper correcting wheel 2 and a driven wheel 3 disposed on the upper floating plate 1. The lower conveying mechanism includes a lower correcting wheel 5 corresponding to the upper correcting wheel 2 and a driving wheel 6 corresponding to the driven wheel 3.

[0041] The material pulling assembly includes a material pulling moving mechanism 29, a gripper mechanism disposed at the moving end of the material pulling moving mechanism 29, and a gripping drive 9 for controlling the closing or opening of the gripper mechanism; the gripper mechanism includes an upper gripper 7 with a first conductive sheet 71 embedded in it and a lower gripper 8 with a second conductive sheet 81 embedded in it.

[0042] The cutting assembly includes a cutting table 10, a cutting blade 11, and a cutting lifting unit 12 for driving the cutting blade 11 to move up and down.

[0043] Preferably, it also includes a guide wheel 13 disposed on the upper floating plate 1, the guide wheel 13 being disposed on the side of the upper correction wheel 2 away from the driven wheel 3.

[0044] Preferably, the upper floating plate 1 is provided with a distance adjustment mechanism for adjusting the distance between the upper floating plate 1 and the substrate 4, the outer wall of the substrate 4 is provided with a first threaded hole, and the distance adjustment mechanism includes a distance adjustment screw 14 for matching the first threaded hole.

[0045] Preferably, the adjusting screw 14 is fitted with an elastic element 15.

[0046] Preferably, it further includes at least two carrier assemblies, a pressing assembly disposed above one of the carrier assemblies, a laser assembly located above the pressing assembly, and a first turntable 16, with at least two carriers evenly distributed on the first turntable 16; the pressing assembly includes a pressing plate 18 connected to a pressing lifting member 17 and a pressing bracket 19, with the pressing bracket 19 disposed on one side of the first turntable 16;

[0047] The vehicle assembly includes a carrier plate 20 and a clamping block 21 disposed above the carrier plate 20, and a clamping telescopic member 22 that causes the clamping block 21 to press down on the busbar.

[0048] Preferably, it also includes a fine-tuning component and a cell delivery component located on one side of the fine-tuning component;

[0049] The fine-tuning assembly includes a multi-axis adjustment base 23, with the first turntable 16 and the pressing bracket 19 both located on top of the multi-axis adjustment base 23;

[0050] The cell delivery assembly includes a second turntable 24 and a plurality of fixtures 25 evenly distributed on the second turntable 24; the second turntable 24 causes the fixtures 25 to approach the carrier plate 20, and some of the cells located on the fixtures 25 extend to the carrier plate 20.

[0051] The laser assembly includes a laser support 26 and a laser welding unit 27. The laser support 26 is located on one side of the first turntable 16, and the laser welding unit 27 is located on the top of the laser support 26.

[0052] Preferably, the top surface of the carrier plate 20 is provided with a plurality of adsorption holes 28 and a positioning structure 30, wherein the positioning structure 30 is located on one side of the adsorption holes 28.

[0053] Preferably, the multi-axis adjustment base 23 includes an X-axis moving unit, a Y-axis moving unit, and an adjustment platform. The X-axis moving unit is used to adjust the position of the adjustment platform in the X-axis direction, and the Y-axis moving unit is used to adjust the position of the adjustment platform in the Y-axis direction.

[0054] Preferably, at least two upper correction wheels 2 and at least two lower correction wheels 5 are arranged in an alternating vertical distribution.

[0055] Preferably, the first conductive sheet 71 and the second conductive sheet 81 are not on the same vertical plane.

[0056] The working principle of this utility model:

[0057] In this embodiment, a second conveying mechanism with the same structure as the upper conveying mechanism may also be provided. The second conveying mechanism is symmetrically arranged about the substrate 4, such as... Figure 5 As shown, the upper conveying mechanism engages with the top of the substrate 4, and the second conveying mechanism engages with the bottom of the substrate 4. Therefore, the substrate 4 is provided with at least two lower correction wheels 5 and two drive wheels 6. One lower correction wheel 5 and one drive wheel 6 engage with the upper conveying mechanism, and the other lower correction wheel 5 and the other drive wheel 6 engage with the second conveying mechanism, forming two converging strip conveying paths. The second conveying mechanism is not shown by a label. In addition, the substrate 4 may be connected to a lifting mechanism, which drives the feeding assembly to move up and down to adjust its vertical height.

[0058] Figure 1 As shown, the busbar is first guided and conveyed by guide wheel 13 to the space between the upper and lower correction wheels 2 and 5, which are arranged in a staggered manner. Finally, it passes through the gap between driven wheel 3 and driving wheel 6 and is output to the top of the cutting table 10. In this embodiment, the distance between the upper and lower correction wheels 2 and 5, and the distance between the driven wheel 3 and driving wheel 6 are adjusted by adjusting the screw and the first threaded hole on the top of the substrate 4, thereby ensuring the guiding and conveying of the busbar. The busbar passing through the cutting table 10 is clamped and pulled by the material pulling assembly. The material pulling and moving mechanism 29 can be a linear module or a cylinder or other mechanism with a moving end. The material pulling and moving mechanism 29 drives the upper clamp 7 and lower clamp 8 to move closer to or away from the feeding assembly. When the upper clamp 7 and lower clamp 8 are in the closed state to clamp the busbar, the moving end of the material pulling and moving mechanism 29 can drive the upper clamp 7 and lower clamp 8 to move away from the feeding assembly synchronously, thereby further pulling the busbar to move towards the carrier plate 20 (in the same direction as the busbar conveyed by the driving wheel 6). Figure 3As shown, the clamping drive component 9 may include a cylinder and a movable connecting component. The telescopic end of the cylinder can drive the movable connecting component to swing, causing the upper clamping jaw 7 to engage with the lower clamping jaw 8. One end of the upper clamping jaw 7 is movably connected to one end of the lower clamping jaw 8, and the other end of the upper clamping jaw 7 swings towards the other end of the lower clamping jaw 8. The upper clamping jaw 7 is embedded with a first conductive sheet 71, and the lower clamping jaw 8 is embedded with a second conductive sheet 81. In this embodiment, the first conductive sheet 71 and the second conductive sheet 81 are not on the same vertical plane, and are not limited to being on the same vertical plane. When the upper clamping jaw 7 and the lower clamping jaw 8 clamp the busbar, the first conductive sheet 71 and the second conductive sheet 81 are connected to the busbar and the circuit can be connected to an external detection circuit to realize incoming material detection. After the material pulling assembly pulls the busbar onto the carrier plate 20, it controls the pressing telescopic component 22 to drive the pressing block 21 to press the busbar on the carrier plate 20. The cutting lifting unit 12 can drive the cutter 11 to cut the busbar passing through the cutting table 10. The first turntable 16 can rotate the cut and pressed busbar to below the pressing plate 18. The second turntable 24 can drive the battery cell portion on the fixture 25 to extend above the busbar. The pressing lifting component 17 drives the pressing plate 18 to press the busbar and part of the battery cell structure (conductive wire) on the carrier plate 20. The pressing plate 18 is provided with slots to facilitate the laser welding unit 27 to pass through and weld the busbar and part of the battery cell structure (conductive wire). The multi-axis adjustment base 23 can be equipped with an X-axis motor for adjusting the X-axis position and a Y-axis motor for adjusting the Y-axis position, thereby adjusting the position of the first turntable 16 and the material pulling assembly. The pressing plate 18 has a heating element. Furthermore, the pressing plate 18 may also have an embedded energized structure or a connected closed circuit. The heating element can be an electrothermal structure, which heats the pressing plate 18 through heat transfer. The pressing plate 18 heats and energizes the pressed busbars and conductive wires, improving the welding effect. Alternatively, the busbars and conductive wires can also be externally energized. Figure 2 In the middle, A represents the busbar.

[0059] In this embodiment, the first conductive sheet 71 and the second conductive sheet 81 are not on the same vertical plane, which can reduce inaccurate material detection caused by poor contact. In addition, the bottom of the pressing plate 18 is provided with pressing protrusions, which can cooperate with the positioning structure 30 to protect the busbar and the cell structure (conductive wire). The positioning structure 30 may be provided with positioning protrusions, and the carrier plate 20 is provided with multiple adsorption holes 28 to adsorb and adhere the busbar, ensuring that the busbar adheres to the carrier and cooperates with the positioning structure 30 for accurate positioning.

[0060] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A busbar feeding mechanism of a stacked gate solar cell sheet, characterized by, include: The feeding assembly includes an upper conveying mechanism that can be adjusted up and down and a lower conveying mechanism fixed to the substrate. The upper conveying mechanism includes an upper floating plate and an upper correcting wheel and a driven wheel disposed on the upper floating plate. The lower conveying mechanism includes a lower correcting wheel corresponding to the upper correcting wheel and a driving wheel corresponding to the driven wheel. A material pulling assembly includes a material pulling moving mechanism, a gripper mechanism disposed at the moving end of the material pulling moving mechanism, and a clamping drive for controlling the closing or opening of the gripper mechanism; the gripper mechanism includes an upper gripper with a first conductive sheet embedded in it and a lower gripper with a second conductive sheet embedded in it. The cutting assembly includes a cutting table, a cutting blade, and a cutting lifting unit for driving the cutting blade to move up and down.

2. The busbar feeding mechanism for stacked grid solar cells according to claim 1, characterized in that, It also includes a guide wheel disposed on the upper floating plate, the guide wheel being disposed on the side of the upper correction wheel away from the driven wheel.

3. The busbar feeding mechanism for stacked grid solar cells according to claim 1, characterized in that, The upper floating plate is provided with a distance adjustment mechanism for adjusting the distance between the upper floating plate and the base plate. The outer wall of the base plate is provided with a first threaded hole. The distance adjustment mechanism includes a distance adjustment screw for matching the first threaded hole.

4. The busbar feeding mechanism for stacked grid solar cells according to claim 3, characterized in that, The adjustable screw is fitted with an elastic element.

5. The busbar feeding mechanism for stacked-grid solar cells according to claim 1, characterized in that, It also includes at least two carrier assemblies, a pressing assembly disposed above one of the carrier assemblies, a laser assembly located above the pressing assembly, and a first turntable, wherein at least two of the carriers are evenly distributed on the first turntable; the pressing assembly includes a pressing plate connected to a pressing lifting component and a pressing bracket, wherein the pressing bracket is disposed on one side of the first turntable; The carrier assembly includes a carrier plate and a clamping block disposed above the carrier plate, and a clamping telescopic member that causes the clamping block to press down on the busbar.

6. The busbar feeding mechanism for stacked-grid solar cells according to claim 5, characterized in that, It also includes a fine-tuning component and a cell delivery component located on one side of the fine-tuning component; The fine-tuning component includes a multi-axis adjustment base, and the first turntable and the pressing bracket are both disposed on the top of the multi-axis adjustment base; The cell delivery assembly includes a second turntable and a plurality of fixtures evenly distributed on the second turntable; the second turntable causes the fixtures to move closer to the carrier plate, and some of the cells located on the fixtures extend onto the carrier plate; The laser assembly includes a laser support and a laser welding unit. The laser support is located on one side of the first turntable, and the laser welding unit is located on the top of the laser support.

7. The busbar feeding mechanism for stacked-grid solar cells according to claim 5, characterized in that, The top surface of the carrier plate is provided with a plurality of adsorption holes and a positioning structure, wherein the positioning structure is located on one side of the adsorption holes.

8. The busbar feeding mechanism for stacked grid solar cells according to claim 6, characterized in that, The multi-axis adjustment base includes an X-axis moving unit, a Y-axis moving unit, and an adjustment platform. The X-axis moving unit is used to adjust the position of the adjustment platform in the X-axis direction, and the Y-axis moving unit is used to adjust the position of the adjustment platform in the Y-axis direction.

9. The busbar feeding mechanism for stacked grid solar cells according to claim 1, characterized in that, At least two of the upper correction wheels and at least two of the lower correction wheels are arranged in an alternating vertical distribution.

10. The busbar feeding mechanism for stacked-grid solar cells according to claim 1, characterized in that, The first conductive sheet and the second conductive sheet are not on the same vertical plane.

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