Stitch welding machine and welding method

Abstract

The invention relates to the field of photovoltaic manufacturing, in particular to a stitch welding machine and a welding method. A conveying mechanism of the stitch welding machine is used for bearing a photovoltaic panel, a welding platform is provided with a welding station used for supporting and welding a battery piece welding strip and a bus bar, and the welding platform responds to control of a controller to weld the battery piece welding strip and the bus bar; and the carrying mechanism is at least partially arranged above the conveying mechanism, and the carrying mechanism is used for separating the battery piece from the glass plate, carrying the battery piece to the welding platform, enabling a welding strip of the battery piece to be in contact with the bus bar, and carrying the welded battery piece to the conveying mechanism to be combined with the glass plate. According to the stitch welding machine, the battery piece and the glass plate can be separated, the welded battery piece and the glass plate are combined, manual separation and combination operation on the battery piece and the glass plate is not needed, the labor cost is reduced, one-stop operation of battery piece machining is achieved, the intelligent degree is high, and the production efficiency of the battery piece is effectively improved.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic manufacturing, and relates to an overlapping welding machine and a welding method. Background Art

[0002] The photovoltaic industry is one of the core industries in the field of new energy, which directly converts light energy into electrical energy through solar cells. In recent years, with the acceleration of the global energy transformation and the decline of technology costs, the photovoltaic industry has shown explosive growth, driving the rapid development of photovoltaic module manufacturing. Cell welding is one of the core processes in photovoltaic module manufacturing. Its function is to connect the electrodes (front and back) of individual cells into a series / parallel circuit through conductive materials to form a cell string, and finally package it into a photovoltaic panel module. The welding quality directly affects the output power, reliability and life of the module.

[0003] In the prior art, an overlapping welding machine is usually used for cell welding. The overlapping welding machine is a comprehensive automated welding device, which at least has a welding platform and a mechanism for transporting cells. The cells are automatically transported to the welding platform for welding to complete the repetitive operation of cell processing. However, the current overlapping welding machine only operates on the cells. Since the cells and the glass plates are set in a set, it is also necessary to manually separate the cells from the glass plates, and it is necessary to manually combine the cells and the glass plates after the cell welding is completed. This increases the procedures of the welding operation and raises the labor cost, which is not conducive to improving the working efficiency of cell welding. Summary of the Invention

[0004] In order to solve or at least partially solve the above technical problems, the present application provides an overlapping welding machine for photovoltaic panel welding, including:

[0005] A conveying mechanism for carrying the photovoltaic panel and extending from one side of the overlapping welding machine to the other side; the photovoltaic panel includes a glass plate and cells laid on the surface of the glass plate;

[0006] A welding platform having a welding station for supporting and welding the cell solder tapes and busbars, and the welding platform welds the cell solder tapes and the busbars in response to the control of a controller;

[0007] A transfer mechanism for transferring the busbars to the welding station;

[0008] A handling mechanism is at least partially disposed above the conveying mechanism. The handling mechanism is used to contact the cells and perform the following steps in response to the control of the controller:

[0009] Separate the cells from the glass plates;

[0010] Transfer the cell to the welding platform so that the welding tape of the cell contacts the bus bar;

[0011] Transfer the welded cell to the combination of the conveying mechanism and the glass plate.

[0012] Optionally, the conveying mechanism includes:

[0013] A carrier for carrying the photovoltaic panel;

[0014] A conveyor belt assembly is arranged below the carrier, and the conveyor belt assembly extends from the input port to the output end of the laminator;

[0015] The carrier is connected to the conveyor belt assembly for conveying the glass plate of the photovoltaic panel from one side of the laminator to the other side.

[0016] Optionally, the handling mechanism includes:

[0017] A lifting device that moves in the vertical direction in response to the control of the controller;

[0018] A fixing frame is connected to the lifting device, and the fixing frame moves in the vertical direction along with the lifting device;

[0019] An adsorption assembly is arranged on the fixing frame at intervals, and the adsorption assembly moves in the vertical direction along with the fixing frame; the adsorption assembly sucks and releases the cell in response to the control of the controller.

[0020] Optionally, the adsorption assembly includes:

[0021] A plurality of brackets are evenly distributed on the fixing frame;

[0022] A plurality of rotating components, the rotating components correspond to the brackets, and the rotating components are fixed on the brackets;

[0023] A plurality of first adsorption heads correspond to the brackets, at least two of the first adsorption heads are symmetrically distributed on both sides of the bracket, the first adsorption heads are connected to the rotating components, and the postures of the first adsorption heads are adjustable under the drive of the rotating components.

[0024] Optionally, the handling mechanism further includes:

[0025] An image acquisition module is communicatively connected to the controller. The image acquisition module captures an image of the photovoltaic panel and transmits the captured image into the controller.

[0026] Optionally, the handling mechanism includes:

[0027] The first handling mechanism is used to separate the cell from the glass plate and transport the cell to the welding platform, so that the welding tape of the cell contacts the bus bar;

[0028] The second handling mechanism is used to transport the welded cell to the combination of the conveying mechanism and the glass plate;

[0029] The first handling mechanism and the second handling mechanism operate synchronously in response to the control of the controller.

[0030] Optionally, the welding platform includes:

[0031] A bracket, which extends and is arranged in a preset direction to form the welding station for supporting the bus bar;

[0032] A welding mechanism, which is arranged adjacent to one side of the bracket and can heat the bus bar located on the bracket;

[0033] A pressing mechanism, which is arranged on one side of the bracket and can move towards the bracket in response to the control of the controller to press the welding tape of the cell against the heating area of the bus bar.

[0034] Optionally, the welding platform further includes:

[0035] A support assembly, which is arranged between the paired columns and is slidably connected to the guide rails on the columns;

[0036] A plurality of second suction heads, which are installed on the support assembly, and the suction ports of the second suction heads are arranged upwards for sucking and supporting the cell;

[0037] A driving mechanism, which is connected to the support assembly and drives the support assembly to move along the guide rail in response to the control of the controller.

[0038] Optionally, the transfer mechanism includes:

[0039] A support seat, which is slidably connected to the frame of the stack welding machine;

[0040] A mounting seat, which is slidably connected to the support seat, and the sliding direction of the mounting seat is perpendicular to the sliding direction of the support seat;

[0041] A plurality of third suction heads, which are installed on the mounting seat for sucking or releasing the bus bar.

[0042] This application provides a welding method, including:

[0043] Separating the glass plate of the photovoltaic panel from the cell string arranged on the glass plate;

[0044] Feed the solar cell into the welding station along the first path.

[0045] Feed the glass plate into the combination station along the second path.

[0046] Weld the solder strip of the solar cell at the welding station to the bus bar.

[0047] Feed the welded solar cell into the combination station along the third path and combine it with the glass plate.

[0048] Optionally, the step of separating the glass plate of the photovoltaic panel from the solar cell string disposed on the glass plate includes:

[0049] In response to the matching signal, adjust the position and pose of the adsorption assembly so that the position of the adsorption assembly and the pose of the adsorption head of the adsorption assembly match the corresponding solar cell string placed on the glass plate.

[0050] In response to the adsorption signal, control each adsorption assembly to move towards the solar cell string so that the adsorption head of the adsorption assembly closely adheres to the solar cell string and adsorbs the corresponding solar cell string.

[0051] In response to the separation signal, lift the adsorption assembly to synchronously lift the solar cell string so that it is separated from the glass plate.

[0052] Optionally, the step of feeding the welded solar cell into the combination station along the third path includes:

[0053] In response to the first in-position signal, control each adsorption assembly to adjust its pose and drive the adsorbed solar cell string to jointly adjust its pose so that the poses of the solar cell strings match the glass plate.

[0054] In response to the movement signal, move the adsorption assembly, and the adsorption assembly drives the adjusted solar cell string to move towards the glass plate.

[0055] In response to the second in-position signal, drive each solar cell string to descend and place the solar cell string on the glass plate.

[0056] Optionally, the step of welding the solder strip of the solar cell at the welding station to the bus bar includes:

[0057] Form a heating area on the surface of the bus bar through electromagnetic induction generated by high-frequency current.

[0058] Arrange magnetic focusing components at intervals along the extension direction of the bus bar on both sides of the high-frequency current, and gather the electromagnetic eddy current on the surface of the bus bar through the magnetic focusing components.

[0059] Optionally, the step of feeding the glass plate into the combination station along the second path further includes:

[0060] Control the moving speed of the glass plate along the second path so that the welded solar cell is exactly corresponding to the glass plate when being fed into the combination station along the third path.

[0061] The stack welding machine provided by the present application includes a conveying mechanism for carrying a photovoltaic panel and extending from one side of the stack welding machine to the other side; a welding platform having a welding station for supporting and welding the welding tape and the bus bar of the solar cell, and the welding platform welds the welding tape and the bus bar of the solar cell in response to the control of a controller; a transfer mechanism for transferring the bus bar to the welding station; a handling mechanism at least partially disposed above the conveying mechanism, the handling mechanism is used to contact the solar cell, separate the solar cell from the glass plate in response to the control of the controller, carry the solar cell to the welding platform, make the welding tape of the solar cell contact with the bus bar, and also carry the welded solar cell to the combination of the conveying mechanism and the glass plate. This stack welding machine not only realizes the automatic welding of the solar cell and the bus bar, but also can separate the solar cell from the glass plate and combine the welded solar cell with the glass plate. During operation, only the photovoltaic panel needs to be integrally placed into the stack welding machine, without manual separation and combination operations on the solar cell and the glass plate, reducing the labor cost, realizing the one-stop operation of solar cell processing, with high intelligence and effectively improving the production efficiency of solar cells.

[0062] The welding method provided by the present application also has the same advantages as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] In order to more clearly illustrate the embodiments of the present application, the relevant drawings will be briefly introduced below. It can be understood that the drawings described below are only used to illustrate some embodiments of the present application, and those of ordinary skill in the art can also obtain many other technical features and connection relationships not mentioned herein according to these drawings.

[0064] Figure 1 is a schematic structural diagram of the stack welding machine of the present application;

[0065] Figure 2 is a schematic structural diagram of the stack welding machine of the present application from another angle;

[0066] Figure 3 is a schematic structural diagram of the handling mechanism of the present application;

[0067] Figure 4 is a partially enlarged schematic diagram of the handling mechanism of the present application;

[0068] Figure 5 is a schematic structural diagram of the welding platform of the present application;

[0069] Figure 6 is Figure 5 an enlarged view of part A in

[0070] Figure 7 It is a schematic cross-sectional view of the welding platform of the present application;

[0071] Figure 8 It is a partially enlarged schematic view of the welding platform of the present application;

[0072] Figure 9 is Figure 8 The cross-sectional view from the B perspective in;

[0073] Figure 10 It is a schematic structural view of the first moving module of the present application;

[0074] Figure 11 It is a schematic structural view of the pressing mechanism of the present application;

[0075] Figure 12 Figure 11 The enlarged view of part C in;

[0076] Figure 13 It is a schematic structural view of the support component of the present application;

[0077] Figure 14 It is a partially enlarged schematic view of the support component of the present application;

[0078] Figure 15 It is a schematic structural view of the support component of the present application from another perspective;

[0079] Figure 16 is Figure 14 The enlarged view of part D in;

[0080] Figure 17 is Figure 15 The enlarged view from the E perspective in;

[0081] Figure 18 It is a schematic structural view of the comb belt structure of the present application;

[0082] Figure 19 It is a schematic cross-sectional view of an embodiment of the comb belt structure of the present application;

[0083] Figure 20 It is a schematic cross-sectional view of an embodiment of the comb belt structure of the present application;

[0084] Figure 21 It is a schematic cross-sectional view of an embodiment of the comb belt structure of the present application;

[0085] Figure 22 It is a schematic enlarged cross-sectional view of an embodiment of the comb belt structure of the present application;

[0086] Figure 23 It is a schematic structural view of an embodiment of the comb belt structure of the present application;

[0087] Figure 24 The structural schematic diagram of an embodiment of the comb belt structure of the present application;

[0088] Figure 25 The structural schematic diagram of an embodiment of the comb belt structure of the present application;

[0089] Figure 26 The structural schematic diagram of the transfer mechanism of the present application;

[0090] Figure 27 is Figure 26 The enlarged view of part F in k

[0091] Figure 28 The partial structural schematic diagram of an embodiment of the transfer mechanism of the present application;

[0092] Figure 29 The step flow chart of the welding method of the present application.

[0093] Explanation of reference numerals:

[0094] 1. Stack welding machine; 10. Machine shell; 11. Inlet end; 12. Outlet end;

[0095] 20. Conveying mechanism; 21. Carrying table; 22. Conveyor belt assembly;

[0096] 30. Welding platform; 310. Bracket; 311. Leg; 312. Support plate; 3121. Suction hole; 3122. Flow guide groove; 313. Connector; 320. Welding mechanism; 321. Welding circuit; 3211. First circuit; 3212. Second circuit; 322. Magnetic focusing component; 3221. First magnetic focusing block; 3222. Second magnetic focusing block; 3223. Third magnetic focusing block; 323. High-frequency power supply; 330. Pressing mechanism; 331. Extrusion block; 332. Second moving module; 3321. Second frame; 3322. Cross beam; 3323. First mounting bracket; 3324. Second mounting bracket; 3325. Mounting plate; 340. Platform body; 350. First moving module; 351. First frame; 352. Connecting frame; 353. First driving mechanism; 360. Guiding structure; 3601. First conductor; 3602. Second conductor; 361. Comb tooth block; 3611. First side wall; 3612. Second side wall; 3612a. First wall section; 3612b. Second wall section; 3613. Third side wall; 3614. Fourth side wall; 370. Column; 371. Lifting guide rail; 380. Support component; 381. Support beam; 3811. First mounting rib; 3812. First adjustment hole; 382. Moving frame; 3821. Mobile end plate; 3822. Slide block; 3823. Fixed block; 3824. Connecting rod; 3825. Limit block; 383. Second adsorption head; 390. Second driving mechanism; 391. Driving motor; 392. Fixed seat; 393. Synchronous belt; 394. Locking part; 395. Drag chain;

[0097] 40. Transfer mechanism; 410. Transfer frame; 411. First guide rail; 412. Support slide rail; 420. Bracket; 421. Second cross beam; 422. Rib column; 423. First lifting part; 424. Second lifting part; 425. Second guide rail; 430. First mounting seat; 431. Third guide rail; 440. Second mounting seat; 441. Connecting plate; 442. Mounting plate; 4421. Mounting hole; 4422. Rib; 443. Support part; 450. Third adsorption head; 460. First driving device; 470. Second driving device; 480. Third driving device;

[0098] 50. Handling mechanism; 51. Lifting device; 52. Fixed frame; 53. Adsorption component; 531. Adsorption bracket; 532. Rotating part; 533. First adsorption head; 534. Second mounting rib; 535. Second adjustment hole;

[0099] 6. Welding tape;

[0100] 7. Bus bar. Detailed implementation method

[0101] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0102] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the accompanying drawings. These are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0103] In the description of the embodiments of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0104] The following will detail the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application.

[0105] Embodiment 1

[0106] This embodiment provides a laminating and welding machine for welding photovoltaic panels. The photovoltaic panel includes a glass plate and solar cells laid on the surface of the glass plate. The laminating and welding machine is used to weld the welding tape 6 of the solar cells to the bus bar 7.

[0107] As Figure 1 and Figure 2As shown in the figure, the laminating and welding machine 1 has a casing 10, and inside the casing 10, there are a conveying mechanism 20, a welding platform 30, a transfer mechanism 40, and a handling mechanism 50. The conveying mechanism 20 is used to carry photovoltaic panels and extends from the inlet end 11 to the outlet end 12 of the laminating and welding machine 1. The welding platform 30 has a welding station for supporting and welding the cell solder tape 6 and the bus bar 7, and the welding platform 30 welds the cell solder tape 6 and the bus bar 7 in response to the control of the controller. The transfer mechanism 40 is used to transfer the bus bar 7 to the welding station. The handling mechanism 50 is at least partially disposed above the conveying mechanism 20, and the handling mechanism 50 is used to contact the cells and perform the following steps in response to the control of the controller:

[0108] Separate the cells from the glass plate;

[0109] Carry the cells to the welding platform so that the cell solder tape 6 contacts the bus bar 7;

[0110] Carry the welded cells to the conveying mechanism 20 for combination with the glass plate.

[0111] As Figure 1 and Figure 2 shown, the conveying mechanism 20 of this embodiment includes a carrying platform 21 and a conveyor belt assembly 22. The carrying platform 21 is used to carry photovoltaic panels; the conveyor belt assembly 22 is disposed below the carrying platform 21, and the conveyor belt assembly 22 extends from the inlet end 11 to the outlet end 12 of the laminating and welding machine; the carrying platform 21 is connected to the conveyor belt assembly 22 and is used to convey the glass plate of the photovoltaic panel from one side of the laminating and welding machine to the other side.

[0112] The conveying mechanism 20 of this laminating and welding machine can transport the glass plate from the inlet end 11 to the outlet end 12 of the laminating and welding machine, waiting for combination with the welded cells. The handling mechanism 50 realizes the separation of the cells from the glass plate, the welding movement of the cells, and the combination of the cells and the glass plate. During operation, only the photovoltaic panel needs to be put into the laminating and welding machine as a whole, without the need for manual separation and combination operations of the cells and the glass plate, reducing the labor cost, realizing one-stop operation of cell processing, with high intelligence and effectively improving the production efficiency of cells.

[0113] Refer to Figure 1 shown, the handling mechanism of this embodiment includes: a lifting device 51, a fixing frame 52, an adsorption assembly 53, and a controller. The fixing frame 52 is connected to the lifting device 51, and the fixing frame 52 moves along the vertical direction with the lifting device 51. The adsorption assemblies 53 are arranged at intervals on the fixing frame 52, and the adsorption assemblies 53 move along the vertical direction with the fixing frame 52. The controller is communicatively connected to the lifting device 51 and the adsorption assemblies 53, and the controller controls the operation of the lifting device 51 and the adsorption assemblies 53.

[0114] The lifting device 51 can precisely control the movement of the fixing frame 52, and the adsorption assembly 53 is installed on the fixing frame 52. Therefore, the adsorption assembly 53 can move synchronously with the movement of the fixing frame 52. The controller is communicatively connected to the lifting device 51 and can control the operation of the lifting device 51 in real time according to the received instructions, so as to realize the approach or separation between the adsorption assembly 53 and the photovoltaic panel.

[0115] Specifically, when it is necessary to separate the battery string on the photovoltaic panel from the glass plate, first, the controller sends an instruction to the lifting device 51 to drive the adsorption assembly 53 to approach the photovoltaic panel. After the adsorption assembly 53 approaches the photovoltaic panel, it will adsorb each battery string in turn. When all the battery strings are firmly adsorbed by the adsorption assembly 53, the controller will send an instruction again to drive the adsorption assembly 53 away from the photovoltaic panel, thus realizing the separation of the battery string from the glass plate.

[0116] In addition, as Figure 3 shown, the adsorption assembly 53 includes: a plurality of adsorption brackets 531, a plurality of rotating components 532 and a plurality of first adsorption heads 533. The plurality of adsorption brackets 531 are evenly distributed on the fixing frame 52. The plurality of rotating components 532, the rotating components 532 correspond to the adsorption brackets 531, and the rotating components 532 are fixed on the adsorption brackets 531. The plurality of first adsorption heads 533 correspond to the adsorption brackets 531, at least two first adsorption heads 533 are symmetrically distributed on both sides of the adsorption bracket 531, the first adsorption heads 533 are connected to the rotating components 532, and the first adsorption heads 533 synchronously adjust their postures under the drive of the rotating components 532.

[0117] When each battery string is adsorbed by the adsorption assembly 53, due to the influence of external interference, its posture may show an inconsistent state. Therefore, during the adsorption process, the adsorption assembly 53 needs to adjust the postures of the plurality of first adsorption heads 533 to the same state as the corresponding battery string to achieve the precise matching between the first adsorption heads 533 and the battery string. The rotating components 532 can control the corresponding first adsorption heads 533 to rotate in direction, so that the postures of the first adsorption heads 533 match the battery string to be adsorbed. At the same time, when each first adsorption head 533 successfully adsorbs the battery string, in order to ensure that the posture of the battery string can match the requirements of the string welding machine, the rotating components 532 will control the corresponding first adsorption heads 533 to adjust their postures again, so as to drive the battery string to complete the posture adjustment to meet the working requirements of the string welding machine. In addition, the first adsorption heads 533 arranged on both sides of the adsorption bracket 531 in a counter-supporting manner can make the target battery string evenly stressed when adsorbing the corresponding battery string, avoiding the change of the posture of the battery string caused by unilateral adsorption, thus ensuring the adsorption effect and the stability of the battery string.

[0118] Specifically, referring to Figure 4As shown, the adsorption assembly 53 further includes: a plurality of second mounting rib plates 534. One end of the second mounting rib plate 534 is connected to the corresponding first adsorption head 533, and the other end of the second mounting rib plate 534 is connected to the rotating member 532. The rotating member 532 rotates to drive the second mounting rib plate 534 to swing, thereby changing the attitude of the first adsorption head 533 connected to the second mounting rib plate 534.

[0119] When the rotating member 532 rotates, the second mounting rib plate 534 will be driven to rotate together. At this time, the first adsorption head 533 at the other end of the second mounting rib plate 534 will also adjust its attitude accordingly. Since the offset problem of the battery string usually stems from the angular error, by driving the rotation of the second mounting rib plate 534 by the rotating member 532, the attitude of the corresponding first adsorption head 533 can be changed, thereby achieving precise adjustment of the battery string.

[0120] In addition, referring to Figure 4 As shown, a second adjustment hole 535 is provided along the length direction of the second mounting rib plate 534. The first adsorption head 533 is clamped in the second adjustment hole 535 and can slide along the second adjustment hole 535 to change the distance between the first adsorption head 533 and the adsorption bracket 531.

[0121] The widths of different battery strings vary. Therefore, by sliding the first adsorption head 533 along the second adjustment hole 535, the distance between the first adsorption heads 533 can be flexibly adjusted to adapt to battery strings of different widths. This design not only improves the adaptability of the adsorption assembly 53 but also ensures that the first adsorption heads 533 with matching specifications can provide a more stable adsorption effect, thereby enhancing the reliability and efficiency of the entire system.

[0122] Moreover, the adsorption assembly 53 further includes: a base. The base is provided on the adsorption bracket 531. A waist-shaped hole is provided along the length direction of the adsorption bracket 531 on the base, and a part of the rotating member 532 is arranged in the waist-shaped hole. When the connection between the rotating member 532 and the base is relaxed, the rotating member 532 can move along the waist-shaped hole and change the distance between two adjacent cylinder suction cups on the same side of the adsorption bracket 531.

[0123] By changing the distance between two first adsorption heads 533 on the same side, the adsorption assembly 53 can flexibly adapt to battery strings of different lengths. This design not only significantly improves the adaptability of the adsorption assembly 53 but also enhances the stability of the battery string during the adsorption process, thereby ensuring the reliability and operating efficiency of the entire system.

[0124] Furthermore, the battery string separation mechanism further includes: an image acquisition module. The image acquisition module is communicatively connected to the controller. The image acquisition module captures an image of the photovoltaic panel and transmits the captured image to the controller.

[0125] The image acquisition module can perform real-time shooting on the photovoltaic panel, so as to accurately extract the attitude information of each battery string on the photovoltaic panel. The controller quickly adjusts the attitude of the first suction head 533 of each adsorption component 53 according to the extracted attitude data, so that it perfectly matches the battery string. This precise attitude matching not only ensures the perfect alignment of the first suction head 533 with the battery string, but also provides a reliable guarantee for the accurate separation between the subsequent battery string and the glass plate.

[0126] Finally, the battery string separation mechanism further includes: a cylinder. The cylinder is connected to the adsorption component 53; the cylinder provides air pressure for the adsorption component 53 to form an adsorption force.

[0127] The cylinder drives the first suction head 533 to firmly adsorb the battery string by providing a stable suction force. Specifically, the use of cylinder adsorption technology can achieve fast and efficient material grasping and placing operations. This design not only improves the operation efficiency, but also simplifies the structure of the equipment to a certain extent. The first suction head 533 driven by the cylinder can achieve high-precision positioning operations, ensuring that the adsorbed battery string remains accurately aligned during the adsorption and separation processes. By reducing the yaw phenomenon of the battery string, the error during the separation process is effectively reduced, and the reliability and precision of the operation are improved.

[0128] In one embodiment, the handling mechanism includes a first handling mechanism and a second handling mechanism. The first handling mechanism is used to separate the battery chip from the glass plate and transport the battery chip to the welding platform 30, so that the welding tape 6 of the battery chip contacts the bus bar 7; the second handling mechanism is used to transport the welded battery chip to the conveying mechanism 20 for combination with the glass plate; the first handling mechanism and the second handling mechanism operate synchronously in response to the control of the controller. That is, when the second handling mechanism combines the welded battery chip with the glass plate, the first handling mechanism is performing the work of separating the next photovoltaic panel. Therefore, the continuous division of labor between the first handling mechanism and the second handling mechanism improves the welding efficiency.

[0129] As Figure 5 shown, the welding platform of this embodiment is used for the automatic welding of the welding tape 6 of the battery chip and the bus bar 7. The welding platform has a platform body 340, and a bracket 310 and a welding mechanism 320 are arranged on the platform body 340. The welding of the welding tape 6 of the battery chip and the bus bar 7 is realized through the mutual cooperation of the bracket 310 and the welding mechanism 320.

[0130] As Figure 5 and Figure 6As shown, the bracket 310 is mounted on the platform body 340. The bracket 310 extends along a preset direction, which is the extension direction of the bus bar 7. The design of the bracket 310 is to enable the bus bar 7 to be directly placed on the bracket 310 to support the bus bar 7.

[0131] In this embodiment, the bracket 310 is mounted on the platform body 340 and forms a gap with the platform body 340. The side where the gap is located is defined as the first side of the bracket 310, that is, the lower side after the bracket 310 is fixedly installed. The side of the bracket 310 away from the platform body 340 is defined as the second side of the bracket 310, that is, the upper side after the bracket 310 is fixedly installed. The bus bar 7 is placed on the surface of the second side of the bracket 310.

[0132] Please refer to Figure 6 , the welding mechanism 320 of this embodiment is disposed adjacent to the first side of the bracket 310 and can heat the bus bar 7 located on the second side of the bracket 310.

[0133] It should be noted that the welding mechanism 320 of this embodiment is a high-frequency welding device, which is a process of using the resistance heat generated by high-frequency current (usually with a frequency of 100 - 500 kHz) to connect metal materials. Its core advantages are fast heating speed, high efficiency, and can achieve local precise heating, especially suitable for welding thin-walled materials. The welding mechanism 320 of this embodiment realizes non-contact welding on one side of the bracket 310 to the other side through the proximity effect in high-frequency welding, which can overcome the layout obstacles of the equipment structure and directly heat the surface of the bus bar 7. The specific explanation of the proximity effect belongs to the common knowledge in this field and will not be elaborated in this embodiment.

[0134] This embodiment also has a pressing mechanism 330. The pressing mechanism 330 is at least partially disposed on the second side of the bracket 310. The pressing mechanism 330 is connected to the control mechanism and moves towards the bracket 310 in response to the control of the control mechanism to press the battery cell solder tape 6 against the heating area of the bus bar 7. As the welding mechanism 320 heats the surface of the bus bar 7, the battery cell solder tape 6 always remains in contact with the bus bar 7, thereby realizing the welding of the battery cell solder tape 6 and the bus bar 7.

[0135] In the welding platform of this embodiment, a bracket 310 extending along a preset direction is provided to form a welding station. The entire bus bar 7 to be welded can be placed on the bracket 310, and then all the solder tapes 6 on one side of the battery cell can be brought into contact with the bus bar 7, quickly achieving the positioning of the solder tapes 6. The welding mechanism 320 is disposed adjacent to the first side of the bracket 310, and heats one surface of the bus bar 7 by high-frequency non-contact welding. The pressing mechanism 330 moves from one side of the bracket 310 towards the bracket 310 to press the battery cell solder tape 6 onto the heated area of the bus bar 7, so that the solder tape 6 is welded to the bus bar 7. The welding platform of this embodiment realizes the fast, accurate, and efficient welding of the battery cell solder tape 6, effectively improving the production efficiency of the battery cell.

[0136] As Figure 6 shown, in this embodiment, the welding mechanism 320 includes a welding circuit 321 and a magnetic focusing component 322.

[0137] The welding circuit 321 is arranged along the extending direction of the bracket 310, so that the welding circuit 321 corresponds to the placed bus bar 7. The welding circuit 321 is connected to a high-frequency power supply 323, generates a magnetic field through high-frequency current, and then generates welding heat to heat the bus bar 7.

[0138] In this embodiment, the magnetic focusing component 322 is mainly made of materials with high magnetic permeability that can effectively guide and concentrate the magnetic field, such as ferrite, silicon steel, amorphous alloy, neodymium iron boron, alnico, etc. The magnetic focusing component 322 is disposed on one side of the welding circuit 321. The magnetic focusing component 322 can guide the eddy current of the magnetic field formed by the welding circuit 321 through its magnetic conduction performance, thereby concentrating the magnetic field formed by the welding circuit 321 and concentrating the welding heat in a partial area of the bus bar 7. Thus, directional welding heat conduction is achieved, which is beneficial to improving the welding efficiency and reducing energy consumption. Thereby, the high-frequency current requirement of the welding circuit 321 can be appropriately reduced, or in other words, the same high-frequency current can weld more solder tapes 6, increasing the welding length of the battery cell and improving the welding efficiency.

[0139] As Figure 6 shown, in this embodiment, the magnetic focusing component 322 includes multiple groups of magnetic focusing blocks, and each group of magnetic focusing blocks can be made of magnetic conduction materials such as ferrite, silicon steel, amorphous alloy, neodymium iron boron, alnico, etc. The magnetic focusing blocks are arranged at intervals along the extending direction of the welding circuit 321, and each group of magnetic focusing blocks forms a heating sub-region on the surface of the bus bar 7. The multiple heating sub-regions are arranged at intervals along the extending direction of the bus bar 7 to correspond to each battery cell solder tape 6.

[0140] In this embodiment, the magnetic focusing component 322 is divided into groups of magnetic focusing blocks along the extending direction of the welding circuit 321. Each group of magnetic focusing blocks separately forms a heating sub-region on the surface of the bus bar 7. In this way, the heating region on the surface of the bus bar 7 is also segmented. Thereby, only the surface of the bus bar 7 in contact with the solder strip 6 can be heated, avoiding heating the entire surface of the bus bar 7, effectively reducing the energy consumption. The saved energy can be used to weld more solder strips 6, improving the welding efficiency. And to a certain extent, the heating temperature is reduced, preventing the temperature from being too high and affecting the solar cell.

[0141] Please refer to Figure 7 , in an embodiment, the welding circuit 321 includes a first circuit 3211 and a second circuit 3212 arranged at intervals. Each group of magnetic focusing blocks at least includes a first magnetic focusing block 3221 located between the first circuit 3211 and the second circuit 3212, a second magnetic focusing block 3222 located at the outer edge of the first circuit 3211, and a third magnetic focusing block 3223 located at the outer edge of the second circuit 3212. The three magnetic focusing blocks are respectively located in the middle and on both sides of the first circuit 3211 and the second circuit 3212, thereby effectively guiding the magnetic field lines generated by the first circuit 3211 and the second circuit 3212, and concentrating the magnetic field eddy current on the surface of the bus bar 7 to form a heating sub-region.

[0142] The arrangement manner of the magnetic focusing blocks in this embodiment is not limited to this. In some embodiments, the magnetic focusing blocks may also be other different arrangement manners, as long as the welding heat can be concentrated on the surface of the bus bar 7.

[0143] Such as Figure 8 shown, in an embodiment, a guiding structure 360 is provided on the bracket 310. Each guiding structure 360 corresponds to each group of magnetic focusing blocks. The guiding structure 360 is arranged on one side of the bracket 310, and is used to guide the solder strip 6 of the solar cell close to the bus bar 7 to the heating sub-region. In this way, when the solder strip 6 of the solar cell approaches the bus bar 7, it will first contact the guiding structure 360 and enter the heating sub-region through the guidance of the guiding structure 360 to contact the bus bar 7, ensuring that the solder strip 6 of the solar cell is in the welding station when it moves and contacts the bus bar 7, and avoiding the phenomena of missed welding and false welding caused by the offset of the solder strip 6 of the solar cell.

[0144] Furthermore, as Figure 8 shown, the guiding structure 360 in this embodiment includes a plurality of guiding blocks arranged at intervals along the extending direction of the bracket 310. Two opposite surfaces between adjacent guiding blocks form two guiding side walls arranged at intervals along the extending direction of the bracket 310, that is, the inner walls of the grooves are formed between adjacent guiding blocks. The middle or bottom of each guiding block groove corresponds to each heating sub-region.

[0145] Moreover, the distance between the two guiding sidewalls gradually increases from the bracket 310 towards the second side direction of the bracket 310. Thus, when the solder tape 6 moves from the second side of the bracket 310 into the groove of the guiding block and contacts the guiding sidewalls, the guiding sidewalls guide the cell solder tape 6 close to the heating sub-region, and finally contact the bus bar 7 within the heating sub-region. The guiding sidewalls effectively achieve the guiding and positioning of the solder tape 6, improve the alignment efficiency of the solder tape 6 and the bus bar 7, prevent the solder tape 6 from moving out of position, and ensure the subsequent welding quality.

[0146] Preferably, in one embodiment, as Figure 8 shown, the guiding structures 360 are arranged in pairs on both sides of the bracket 310, which enables the bracket 310 to perform welding operations on the cells on both sides simultaneously.

[0147] As a further improvement, in one embodiment, as Figure 9 shown, the surface of the guiding structure 360 has a first conductor 3601 that can contact the cell solder tape 6, and the surface of the bracket 310 has a second conductor 3602 that can contact the bus bar 7.

[0148] Please refer to Figure 9 . Among them, the first conductor 3601 is embedded on the guiding sidewall of the guiding structure 360 or arranged at the bottom of the groove of the guiding structure 360, ensuring that when the solder tape 6 contacts the bus bar 7, it just contacts the first conductor 3601. The second conductor 3602 is embedded on the upper surface of the bracket 310. When the bus bar 7 is placed on the upper surface of the bracket 310, the bus bar 7 will contact the second conductor 3602.

[0149] In this embodiment, the first conductor 3601 and the second conductor 3602 are insulated. That is, when the solder tape 6 does not contact the bus bar 7, the first conductor 3601 and the second conductor 3602 are insulated. The first conductor 3601 and the second conductor 3602 are respectively connected to corresponding detection circuits. When the solder tape 6 moves to contact the bus bar 7, at this time, the first conductor 3601 and the second conductor 3602 form a loop through the solder tape 6 and the bus bar 7, and the detection circuit generates a feedback signal for feeding back the contact and positioning of the cell solder tape 6 and the bus bar 7.

[0150] This feedback signal is sent to the processor of the welding platform. When the processor receives the feedback signal, it indicates that the solder tape 6 is in the welding station. At this time, the processor can control the welding mechanism 320 to start and realize the welding and heating of the solder tape 6 and the bus bar 7.

[0151] In this embodiment, by providing the first conductor 3601 and the second conductor 3602, rapid feedback on the movement and positioning of the solder strip 6 is achieved. This not only allows for the determination or verification of the positioning of the solder strip 6 but also enables the automated initiation of the welding process, saving on manual inspection and time costs, realizing the automation of welding, and further enhancing the welding efficiency of the battery cells.

[0152] In one embodiment, the guiding structure 360 is slidably arranged relative to the magnetic concentrating block along the extending direction of the bracket 310. Alternatively, the magnetic concentrating block has a slot, and the magnetic concentrating block is slidably arranged relative to the guiding structure 360 within the slot along the extending direction of the welding circuit 321, so that the relative position between the magnetic concentrating block and the guiding structure 360 is adjustable, thereby enabling the control of the position of the heating sub-region for adjustment according to the position of the bus bar 7 or the solder strip 6 to determine the optimal welding point.

[0153] In one embodiment, as Figure 7 shown, the bracket 310 includes legs 311 located on both sides of the welding mechanism 320 and a support plate 312 connecting the two legs 311; the support plate 312 is used to support the bus bar 7, and the legs 311 are supported on the surface of the platform body 340, forming a gap between the support plate 312 and the surface of the platform body 340. The legs 311 are fixed to the surface of the platform body 340 through connectors 313, and by adjusting the connectors 313, the legs 311 can also slide on the surface of the platform body 340 to adjust the position of the bracket 310.

[0154] As Figure 6 shown, in one embodiment, the surface of the bracket 310 has suction holes 3121 that penetrate from the first side to the second side. The suction holes 3121 are located at the part of the bracket 310 that supports the bus bar 7 and are specifically provided on the support plate 312, and when the bus bar 7 is placed on the bracket 310, the suction holes 3121 can be covered.

[0155] A certain gap is left between the first side of the bracket 310 and the welding mechanism 320. A negative pressure device is arranged within this gap, and the negative pressure device is connected to the suction holes 3121 for generating negative pressure to tightly hold the bus bar 7, thereby fixing the bus bar 7 on the bracket 310 and preventing the bus bar 7 from shifting.

[0156] Specifically, the negative pressure device can be a gas pipe. One end of the gas pipe is connected to the suction holes 3121, and the other end extends out of the welding platform to connect to the corresponding air pressure source. The air pressure source generates negative pressure in response to the control of an external controller to tightly hold the bus bar 7.

[0157] Furthermore, this air pressure source can be connected to the second conductor 3602 mentioned above. When the bus bar 7 is placed on the bracket 310, the air pressure source forms a circuit with the bus bar 7 and the second conductor 3602, and the air pressure source automatically generates negative pressure to tightly hold the bus bar 7.

[0158] As Figure 6 shown, in one embodiment, the second side surface of the bracket 310 has a diversion groove 3122, that is, the support plate 312 of the bracket 310 is provided with a diversion groove 3122. The diversion groove 3122 extends to the edge of the support plate 312 of the bracket 310, and is used to receive and divert the melt flowing out after the bus bar 7 is heated, so as to prevent the melt from accumulating on the surface of the bracket 310 and affecting the flatness of the bus bar 7.

[0159] The diversion groove 3122 is arranged perpendicular to the extending direction of the bracket 310. A plurality of diversion grooves 3122 are arranged at intervals along the extending direction of the bracket 310 and correspond to the area where the welding mechanism 320 heats the bus bar 7, so as to ensure that the melt after welding in each heating sub-region can be smoothly discharged.

[0160] As Figure 5 shown, in this embodiment, the welding mechanism 320 and the bracket 310 are respectively arranged on the platform body 340 along a straight line. At least part of the bracket 310 covers the welding mechanism 320, and a gap is formed between the bracket 310 and the welding mechanism 320. First moving modules 350 are respectively arranged at both ends of the platform body 340. The first moving module 350 is used to drive the platform body 340 to move, so as to adjust the position of the welding platform in the entire laminator.

[0161] As Figure 10 shown, in one embodiment, the first moving module 350 includes a first frame 351, a connecting frame 352 and a first driving mechanism 353. The first frame 351 is arranged at an angle to the extending direction of the platform body 340, which is a right angle in the figure. A guide rail is arranged on the first frame 351; the connecting frame 352 is arranged at the end of the platform body 340 and is slidably connected to the guide rail; the first driving mechanism 353 is connected to the connecting frame 352 and is used to drive the connecting frame 352 to slide along the guide rail so as to realize the position adjustment of the welding platform.

[0162] As Figure 11 shown, the pressing mechanism 330 of this embodiment includes a plurality of pressing blocks 331 and a second moving module 332. The plurality of pressing blocks 331 are arranged at intervals along the extending direction of the bracket 310 so as to correspond to the bus bar 7. The second moving module 332 is connected to the plurality of pressing blocks 331 and is used to drive the pressing blocks 331 to move towards the bracket 310, so that each pressing block 331 corresponds to the solder tape 6 in each heating sub-region, and then presses the solder tape 6 and the bus bar 7 to fully weld the solder tape 6 and the bus bar 7.

[0163] Specifically, the second moving module 332 includes two second racks 3321 arranged in parallel. A cross beam 3322 is disposed between the two second racks 3321. The cross beam 3322 is hoisted on the second racks 3321 by a hoisting member, and a guide rail is provided on the second racks 3321. The cross beam 3322 is slidably arranged along the guide rail by the hoisting member. One end of the second rack 3321 is provided with a driving motor for driving the cross beam 3322 to move along the guide rail of the second rack 3321.

[0164] A first mounting bracket 3323 is provided on the cross beam 3322, and a guide rail arranged along its extending direction is also provided on the cross beam 3322. The first mounting bracket 3323 is slidably arranged along the guide rail of the cross beam 3322 by another driving mechanism.

[0165] A second mounting bracket 3324 is provided on the first mounting bracket 3323, and a corresponding guide rail is also provided on the first mounting bracket 3323. The second mounting bracket 3324 is slidably arranged along the guide rail by another driving mechanism.

[0166] As Figure 12 shown, a mounting plate 3325 is mounted on the second mounting bracket 3324. The mounting plate 3325 is in line with the extending direction of the bracket 310. A plurality of extrusion blocks 331 are arranged at intervals in sequence on the mounting plate 3325 for extruding the welding tape 6.

[0167] In this embodiment, the guide rails on the second rack 3321, the cross beam 3322, and the first mounting bracket 3323 are perpendicular to each other to realize the adjustment of the extrusion block 331 in multiple degrees of freedom directions. Among them, the guide rail on the first mounting bracket 3323 is preferably arranged vertically to facilitate controlling the extrusion block 331 to descend to extrude the welding tape 6. Of course, in one embodiment, the first mounting bracket 3323 or the second mounting bracket 3324 can be a telescopic mechanism to realize the descending movement of the extrusion block 331.

[0168] The welding platform of this embodiment further has a welding support platform, which includes a support assembly 380, a second suction head 383, and a second driving mechanism 390. The support assembly 380 is arranged between the paired columns 370 and is slidably connected to the lifting track 371 on the columns 370. A plurality of second suction heads 383 are mounted on the support assembly 380. The suction ports of the second suction heads 383 are arranged upward for sucking and supporting the battery cells. The second driving mechanism 390 is connected to the support assembly 380 and drives the support assembly 380 to move along the lifting track 371 in response to the control of the controller.

[0169] Specifically, as Figure 13As shown, the welding platform provided in this embodiment has at least one set of paired columns 370, and a support assembly 380 is arranged between the two columns 370 of each group. A lifting track 371 is provided on each column 370, and both ends of the support assembly 380 are slidably connected to the lifting track 371 on the column 370, so that displacement adjustment in the direction of the lifting track 371 can be achieved.

[0170] In this embodiment, the support assembly 380 is used to support the solar cell from below. A plurality of second suction heads 383 are provided on the support assembly 380. The suction ports of the second suction heads 383 are arranged upward, and at least part of the second suction heads 383 protrude from the upper surface of the support assembly 380 for sucking and supporting the solar cell.

[0171] In this embodiment, in order to meet the requirement of the horizontal placement of the solar cell, the support assembly 380 is horizontally arranged and perpendicular to the column 370. The plurality of second suction heads 383 are arranged on the same horizontal plane, and the suction ports of the second suction heads 383 are horizontally arranged to suck the solar cell to ensure the horizontal state of the solar cell. Since the solar cell is relatively thin, the second suction heads 383 can achieve flexible support for the solar cell, and the second suction heads 383 have an adaptive curved surface compensation function, which can better cope with the micron-level warping of the solar cell caused by thermal expansion or slight deformation, and ensure stable support for the solar cell.

[0172] As Figure 13 shown, in this embodiment, at least part of the second suction heads 383 are located on one side of the support assembly 380 adjacent to the side where the column 370 is located. That is to say, the two ends of the support assembly 380 are columns 370, and at least one end of the other two ends is vacant. At this vacant end, the second suction heads 383 protrude outside the support assembly 380. In this way, when the solar cell is placed on the support assembly 380, the end portion of the solar cell with the welding tape 6 can protrude from the support assembly 380, so as to be extended into the welding station for welding with the bus bar.

[0173] This embodiment is provided with a second driving mechanism 390. The second driving mechanism 390 is connected to the support assembly 380 and is used to drive the support assembly 380 to move along the lifting track 371. The lifting track 371 is consistent with the extending direction of the column 370 and is vertically arranged. Therefore, the second driving mechanism 390 can drive the support assembly 380 to move up and down, thereby realizing the adjustment of the vertical position of the solar cell.

[0174] In one embodiment, the second driving mechanism 390 can be controlled by a computer program to achieve precise displacement adjustment and meet the requirements of automatic control.

[0175] The battery cell welding support platform provided in this embodiment is provided with a support assembly 380 for supporting the battery cell. A plurality of second suction heads 383 are arranged on the support assembly 380, and the suction ports of the second suction heads 383 are arranged upward to suck and support the battery cell from below the battery cell, so that the battery cell can be stably placed on the platform for welding, avoiding the instability of the traditional hoisting mechanism for hoisting the battery cell for welding.

[0176] The support assembly 380 is arranged between two columns 370 in each group. At least part of the second suction heads 383 are located on one side of the support assembly 380 adjacent to the side where the column 370 is located. When the battery cell is placed on the second suction heads 383, the welding tape 6 at one end of the battery cell can extend out of the support assembly 380, so that the welding tape 6 at one end of the battery cell can enter the welding station, ensuring that the welding tape 6 is in contact with and welded to the bus bar.

[0177] The support assembly 380 of this embodiment is slidably connected to the lifting track 371 on the column 370, and the support assembly 380 is connected to a second driving mechanism 390. The second driving mechanism 390 can drive the support assembly 380 to move up and down along the lifting track 371 to drive the battery cell to adjust its position in the vertical direction. During the welding process of the battery cell, it is necessary to place the welding tape 6 of the battery cell on the bus bar and make a certain displacement adjustment to whether the welding tape 6 is placed in good contact with the bus bar. The traditional support platform cannot be adjusted and thus cannot adjust the position of the welding tape 6, so it is impossible to determine the contact situation between the welding tape 6 and the bus bar, which easily leads to virtual soldering or missed soldering. In this embodiment, after the battery cell is placed, that is, after the battery cell is placed on the second suction heads 383, the support assembly 380 can move up and down along the lifting track 371, thereby driving the battery cell to adjust its position in the vertical direction, aligning the welding tape 6 with the bus bar, making the two in full contact, and improving the welding quality.

[0178] The battery cell welding support platform of this embodiment can receive the battery cell to be welded transported by the handling mechanism and provide stable support during the welding of the battery cell, avoiding the unstable problem of the traditional hoisting of the battery cell for welding. Moreover, the welding support platform realizes stable displacement adjustment through the paired columns 370 and the driving mechanism, realizes the alignment adjustment of the welding tape 6 of the battery cell and the bus bar, and meets the high-precision welding requirements of the photovoltaic module.

[0179] As Figure 14 and Figure 15 shown, the support assembly 380 of this embodiment includes a plurality of support beams 381 arranged at intervals. The second suction heads 383 are installed on the support beams 381. Moving frames 382 are arranged at both ends of the support beams 381. The moving frames 382 are slidably connected to the lifting track 371, and the second driving mechanism 390 drives the moving frames 382 to slide on the lifting track 371 to realize the up and down adjustment of the support beams 381.

[0180] In this embodiment, a plurality of support beams 381 are arranged in parallel and at intervals. The support beams 381 are perpendicular to the column 370 and in a horizontal state. A plurality of second suction heads 383 are installed at the gaps between the support beams 381, which is convenient for installation and the routing of the air circuit of the second suction heads 383. The arrangement of the plurality of support beams 381 reduces the material consumption compared with the traditional integral support platform, reduces the overall weight of the platform, simplifies the structure, and facilitates the installation of the equipment.

[0181] Moreover, during the welding operation of the battery cells, heat is easily generated during welding. The conventional metal platform has too high a thermal conductivity, and the integral support platform has weak ventilation ability and poor heat dissipation effect, which is very likely to cause a relatively high local temperature of the platform, affecting the battery cells and causing deformation or damage to the battery cells. In this embodiment, a plurality of support beams 381 are arranged in parallel and at intervals, and sufficient space is left between the support beams 381 for heat dissipation, improving the heat dissipation efficiency and preventing the local temperature of the platform from being too high and affecting the battery cells.

[0182] In this embodiment, the second suction heads 383 are respectively arranged on both sides of the support beam 381 and arranged at intervals along the extending direction of the support beam 381. The number of the second suction heads 383 can be set according to actual needs to ensure effective support for each battery cell.

[0183] The second suction heads 383 of this embodiment are connected with an air circuit. The air circuit includes air pipes, control valves and vacuum generators. The air pipes are arranged in the gaps between the support beams 381 and at the bottom of the support beams 381. Each air pipe branch is correspondingly connected to each second suction head 383 to provide negative pressure for the second suction heads 383 to suck the battery cells. The control valves and vacuum generators are installed in the air circuit and can be controlled by a remote controller to provide vacuum conditions for the air circuit and the second suction heads 383 to realize the suction or release of the second suction heads 383.

[0184] In one embodiment, as Figure 14 shown, drag chains 395 are also arranged on both sides of the support beam 381. The drag chains 395 are connected to the support beam 381 and move along with the support beam 381. The drag chains 395 have accommodation spaces. Since the number of the second suction heads 383 required to support the battery cells is large, there are naturally many air circuits mentioned above. Therefore, multiple groups of air circuits can be routed in the accommodation spaces of the drag chains 395. In this way, multiple groups of air circuits are reasonably routed and sorted out to avoid the air circuits being messy and affecting the movement of the support assembly 380.

[0185] As Figure 16As shown, in one embodiment, a first mounting rib plate 3811 is provided on the support beam 381. The first mounting rib plate 3811 is perpendicular to the support beam 381. Both ends of the first mounting rib plate 3811 extend to both sides of the support beam 381. The second suction head 383 is mounted on the first mounting rib plate 3811, and at least two second suction heads 383 are mounted on each first mounting rib plate 3811.

[0186] The first mounting rib plate 3811 is detachably connected to the support beam 381. Wherein, an installation groove arranged along the extending direction of the support beam 381 can be provided on the upper surface of the support beam 381. The first mounting rib plate 3811 can be connected in the installation groove through a connecting piece and can also adjust its position in the installation groove, so that the position of the second suction head 383 is adjustable in the extending direction of the support beam 381.

[0187] In one embodiment, a first adjusting hole 3812 is provided on the first mounting rib plate 3811. The second suction head 383 is installed in the first adjusting hole 3812. The first adjusting hole 3812 is a long strip hole, and the position is adjustable through the first adjusting hole 3812. The extending direction of the long strip hole forms an angle with the extending direction of the above-mentioned moved installation groove, preferably a perpendicular relationship. In this way, the position of the second suction head 383 is adjustable in the transverse direction of the support beam 381.

[0188] As Figure 17 shown, in this embodiment, the moving frame 382 includes a mobile end plate 3821. The mobile end plate 3821 is parallel to the column 370 or the lifting track 371. The mobile end plate 3821 is slidably connected to the lifting track 371 through a slider 3822. A fixed block 3823 is provided on one side of the mobile end plate 3821 and is connected to the connecting rod 3824 through the fixed block 3823. The connecting rod 3824 is horizontally arranged, and the connecting rod 3824 connects a plurality of support beams 381 to ensure that the plurality of support beams 381 are in a horizontal state.

[0189] Specifically, an installation hole is provided at the end of each support beam 381. The connecting rod 3824 passes through the installation holes of each support beam 381 to connect the plurality of support beams 381 in series. Limit blocks 3825 are sleeved on the connecting rod 3824 on both sides of the support beam 381. The limit blocks 3825 are used to limit the support beam 381 to prevent the support beam 381 from moving relative to the connecting rod 3824 and ensure the stability of the distance between adjacent support beams 381.

[0190] As Figure 13As shown, in this embodiment, four columns 370 are provided, and the four columns 370 are arranged in pairs on both sides of the support assembly 380; the four columns 370 ensure the stability of the support assembly 380. Among them, each movable end plate 3821 slides with the lifting rails 371 on the two columns 370; the movable end plate 3821 is connected to the two columns 370 to ensure its stability during movement.

[0191] The second driving mechanism 390 of this embodiment is connected to the movable end plate 3821 between the two columns 370. The second driving mechanism 390 applies a push-pull force from the middle of the movable end plate 3821 to ensure that the sliders 3822 on both sides of the movable end plate 3821 slide smoothly with the lifting rail 371, thereby ensuring the stability of the battery cell's up and down movement process.

[0192] Specifically, the second driving mechanism 390 of this embodiment adopts a synchronous belt matching mechanism, which includes a synchronous belt assembly and a drive motor 391. The synchronous belt assembly is arranged along the extension direction of the lifting track 371, and the synchronous belt 393 of the synchronous belt assembly is fixedly connected to the movable end plate 3821.

[0193] The synchronous belt assembly includes two fixed bases 392 fixed relative to the column 370. Pulleys are installed within the bases 392. The two bases 392 are arranged one above the other. The synchronous belt 393 is looped between the pulleys of the two bases 392, keeping the synchronous belt 393 in a vertical position. The output end of the drive motor 391 is connected to one of the pulleys, which drives the synchronous belt 393. The up and down movement of the synchronous belt 393 drives the support assembly 380 along the lifting track 371, thereby achieving the vertical adjustment of the battery cell at the welding station.

[0194] like Figure 14 As shown, a locking member 394 is provided on the synchronous belt 393 , and the locking member 394 is fixed on the movable end plate 3821 . The movement of the synchronous belt 393 drives the movable end plate 3821 to move through the locking member 394 .

[0195] This embodiment adopts the driving mode of the synchronous belt 393, which can realize the smooth movement of the support assembly 380, meet the requirements of fine-tuning the battery cell, and improve stability.

[0196] Of course, in some embodiments, a drive method such as a screw rod may also be used, and this embodiment does not limit it.

[0197] like Figure 18 As shown, the welding platform of this embodiment also has a comb belt structure composed of multiple comb tooth blocks 361. The multiple comb tooth blocks 361 are arranged in a straight line at intervals, and a guide groove is formed between two adjacent comb tooth blocks 361. The multiple comb tooth blocks 361 can share a long strip base to maintain relative fixation between the comb tooth blocks 361.

[0198] When the battery cell combing tape structure of this embodiment is placed horizontally, the opening of the guiding groove faces upward, and both the left and right sides of the guiding groove are through. When the soldering tape 6 of the battery cell approaches the guiding groove, the guiding groove contacts the soldering tape 6, and the guiding groove can squeeze the soldering tape 6, thereby deforming the soldering tape 6 to a certain extent to adjust the soldering tape 6.

[0199] The relative positions between multiple comb teeth blocks 361 are fixed. By designing the reasonable dimensions between the comb teeth blocks 361, that is, controlling the width of the guiding groove, when multiple soldering tapes 6 on one side of the battery cell are placed into the guiding groove (the arrow in the figure indicates the placing direction), the comb teeth blocks 361 arranged according to the expected dimensions or positions squeeze the soldering tape 6, and the guiding groove guides the soldering tape 6, so as to arrange the soldering tape 6 according to the expected requirements.

[0200] In this way, the soldering tapes 6 with irregular arrangement, or bending, or not in the expected positions are sorted out, so that the soldering tapes 6 on one side of the battery cell are neatly arranged. Furthermore, when the soldering tape 6 is welded to the bus bar 7, the soldering tape 6 and the bus bar 7 are in the expected contact positions, which can improve the welding quality of the two, avoid phenomena such as virtual soldering and missed soldering, and thus improve the product quality and processing efficiency of the battery cell.

[0201] It is worth mentioning that the combing tape structure of this embodiment can be the same structure as the guiding structure 360 mentioned in the above embodiment. That is to say, the guiding structure 360 mentioned in the above embodiment not only guides the soldering tape 6 into the welding station, but also can sort out the soldering tape 6 before it enters the welding station.

[0202] As Figure 19 shown, on one side of the comb teeth block 361 facing the guiding groove, there is a first side wall 3611, and the opposite sides of the comb teeth block 361 respectively have the first side wall 3611. The distance between the two opposite first side walls 3611 of adjacent comb teeth blocks 361 gradually decreases in the direction from the top to the bottom of the guiding groove. That is to say, the comb teeth block 361 is a tapered structure with a smaller upper part and a larger lower part, and the guiding groove is a flared groove with an upward opening. When the soldering tape 6 is placed into the guiding groove from top to bottom, the soldering tape 6 contacts the inclined first side wall 3611, and under the guidance of the first side wall 3611, the soldering tape 6 moves towards the bottom of the guiding groove. At this time, the deflected soldering tape 6 can be corrected.

[0203] Furthermore, in one embodiment, on one side of the comb teeth block 361 facing the guiding groove, there is a second side wall 3612. The second side wall 3612 is connected to the first side wall 3611, and the second side wall 3612 is closer to the bottom of the guiding groove than the first side wall 3611. The second side wall 3612 is also arranged in pairs like the first side wall 3611.

[0204] In this embodiment, the distance between two opposite first side walls 3611 is greater than the distance between two opposite second side walls 3612, and the distance between the two second side walls 3612 is greater than the width of the solder strip 6. When the solder strip 6 is placed into the guiding groove from top to bottom, the solder strip 6 first contacts the first side wall 3611, moves towards the second side wall 3612 under the guidance of the first side wall 3611, and falls to one side of the second side wall 3612, that is, falls between the two second side walls 3612.

[0205] It should be noted that the first side wall 3611 in this embodiment has a large opening range for contacting the skewed solder strip 6. Then, as the solder strip 6 continues to move downward, the solder strip 6 is guided to one side of the second side wall 3612. The range involved by the first side wall 3611 only needs to be able to collect the skewed solder strip 6. The positions or distances of multiple first side walls 3611 can be irregular; while the second side wall 3612 is set at the expected position where the solder strip 6 needs to be arranged. When the first side wall 3611 guides the solder strip 6 to the second side wall 3612, the solder strip 6 is corrected.

[0206] In one embodiment, as Figure 19 shown, the second side wall 3612 extends towards the bottom direction of the guiding groove, and two opposite second side walls 3612 between adjacent comb-shaped blocks 361 intersect. In this way, when the solder strip 6 moves downward to contact the two second side walls 3612, it is supported and fixed by the two second side walls 3612, so as to ensure that the solder strip 6 is in a fixed state after being corrected and prevent the solder strip 6 from deforming. This state can be maintained until the solder strip 6 is welded to the bus bar 7, which can play a role in maintaining the position of the solder strip 6 in the state of being heated or extruded during welding and prevent it from deforming again during the welding process and affecting the welding quality.

[0207] In the above embodiment, the two second side walls 3612 intersect, realizing the limitation of solder strips 6 with different widths and ensuring the stability of the solder strip 6 between the second side walls 3612.

[0208] As Figure 19 shown, the surfaces of the second side wall 3612 and the first side wall 3611 are both flat surfaces, ensuring that the solder strip 6 can be guided smoothly. The slopes of the second side wall 3612 and the first side wall 3611 are different and can be freely set according to actual needs. Among them, the larger the angle between the first side wall 3611 and the vertical plane, the larger its opening angle, which is convenient for collecting the skewed solder strip 6. The smaller the angle between the second side wall 3612 and the vertical plane, the more stable it is to fix the solder strip 6.

[0209] Of course, in one embodiment, the slope of the second sidewall 3612 is the same as that of the first sidewall 3611, that is, the second sidewall 3612 and the first sidewall 3611 are in the same plane. At this time, as in the case of only the first sidewall 3611 mentioned above, since the effects are the same, it will not be elaborated here.

[0210] As Figure 20 shown, in one embodiment, the second sidewall 3612 extends to the bottom of the guiding groove. The distances between two opposite second sidewalls 3612 of adjacent comb-shaped blocks 361 are equal, and the distance between the two second sidewalls 3612 is greater than the width of the welding tape 6. In this embodiment, the distance between the two second sidewalls 3612 is slightly greater than the width of the welding tape 6, which is required to ensure that the welding tape 6 can fall between the two second sidewalls 3612. At the same time, the two second sidewalls 3612 limit the welding tape 6 and keep the welding tape 6 at the expected position after correction.

[0211] As Figure 21 shown, in one embodiment, the second sidewall 3612 is divided into upper and lower ends, including a first wall segment 3612a and a second wall segment 3612b; the first wall segment 3612a is connected to the first sidewall 3611, and the second wall segment 3612b extends from the first wall segment 3612a to the bottom of the guiding groove. Two opposite second wall segments 3612b of adjacent comb-shaped blocks 361 intersect, and the second wall segment 3612b is arranged at an angle with the first wall segment 3612a.

[0212] In this embodiment, the first wall segment 3612a plays the same role as the first sidewall 3611 mentioned above, and can guide the welding tape 6 to the second wall segment 3612b. The second wall segment 3612b plays the role of the two intersecting second sidewalls 3612 mentioned in the above embodiment Figure 2 and will not be elaborated here.

[0213] Further, as Figure 21As shown, the distances between two opposite first wall segments 3612a of adjacent comb teeth blocks 361 are equal to each other, and the distance between the two first wall segments 3612a is greater than the width of the solder tape 6. In this embodiment, the gaps between the two first wall segments 3612a and the gaps between the two second wall segments 3612b also play a role in limiting the corrected solder tape 6. Since multiple solder tapes 6 are arranged in a row on one side of the battery cell, it is difficult to make all the solder tapes 6 be on the same horizontal line when moving or welding the battery cell. Therefore, when allowing the solder tape 6 to have a small amplitude of up-and-down undulation, the first wall segments 3612a and the second wall segments 3612b respectively play a role in limiting the solder tapes 6 that are not on the same horizontal line. Among them, the distance between the two first wall segments 3612a is slightly wider than the width of the solder tape 6, and the solder tape 6 is not stuck between the two first wall segments 3612a, and its small-amplitude left-and-right movement is within the expected position of the curve of the solder tape 6, which also plays a role in limiting.

[0214] In some embodiments, as Figure 21 shown, a first positioning groove is provided at the bottom of the guiding groove. The width of the first positioning groove is less than the minimum width of the guiding groove and greater than the width of the solder tape 6. The guiding groove is used to guide the solder tape 6 into the first positioning groove. The first positioning groove plays a role in positioning the solder tape 6.

[0215] Further, a second positioning groove is provided at the bottom of the first positioning groove. The first positioning groove is used to guide the solder tape 6 into the second positioning groove. The width of the second positioning groove is at least partially less than the width of the solder tape 6 to limit the solder tape 6.

[0216] The inner wall of the first positioning groove in this embodiment can be understood as the above two first wall segments 3612a, and the inner wall of the second positioning groove can be understood as the above two second wall segments 3612b. Therefore, the first positioning groove and the second positioning groove have the same effect as the first wall segments 3612a and the second wall segments 3612b described above.

[0217] Of course, the inner walls of the first positioning groove and the second positioning groove are not limited to being planar, and can also be other shapes, as long as they play a role in guiding and limiting the solder tape 6.

[0218] The battery cell combing tape structure provided in this embodiment guides the welding tape 6 through the first side wall 3611 and the second side wall 3612, as well as the first wall segment 3612a and the second wall segment 3612b respectively to arrange the welding tape 6. The battery cell combing tape structure is arranged on one side of the welding station, and the guiding groove is located at the expected station of the welding tape 6 during welding. When the battery cell moves close to the welding station, the welding tape 6 of the battery cell is combed through the guidance of the above side walls, and the originally bent or misaligned welding tape 6 is combed to be neatly arranged, so that the welding tape 6 can be neatly arranged on the bus bar 7, ensuring the welding quality of the welding tape 6 and the bus bar 7, improving the welding efficiency, and playing a significant role in the welding operation of the welding tape 6 and the bus bar 7.

[0219] This embodiment also provides a combing tape structure, which is the same as the structure in the above embodiment and has further improvements on the basis of the above embodiment.

[0220] The inventor found that since the welding tape 6 is vertically placed into the battery cell combing tape structure by the handling mechanism, if the stroke of the handling mechanism is too short, the welding tape 6 will not be placed at the bottom of the guiding groove, resulting in poor correction effect; if the stroke of the handling mechanism is too long, the welding tape 6 will overly squeeze the bottom of the guiding groove, causing the welding tape 6 to bend and affecting welding. In order to accurately determine whether the welding tape 6 has moved to contact the bottom of the guiding groove and achieve the best correction effect of the welding tape 6, this embodiment further improves the inner wall of the guiding groove.

[0221] As Figure 22 shown, in one embodiment, the second side wall 3612 is made of a conductor material, and the two second side walls 3612 opposite to each other between adjacent comb teeth blocks 361 are insulated; at the same time, the two second side walls 3612 are connected to a controller or a feedback mechanism through a circuit. When the welding tape 6 descends and contacts the two second side walls 3612 at the same time, the welding tape 6 reaches the expected position and is supported by the two second side walls 3612. The two second side walls 3612 are electrically connected through the welding tape 6 to form a circuit, and the circuit generates a feedback signal. The feedback signal is sent to the controller through the circuit to feedback that the welding tape 6 is arranged in place. The controller can control the feedback mechanism, such as the handling mechanism, to indicate that the handling mechanism has reached the ideal position, stop running, and keep the welding tape 6 at this position, effectively avoiding the problems that the welding tape 6 is not corrected due to not contacting the second side wall 3612 and the welding tape 6 is bent due to overly descending, and realizing the intelligent control of the handling of the welding tape 6.

[0222] In some embodiments, the second side wall 3612 with conductive properties can be such as Figure 21The second wall segment 3612b shown can also be the first side wall 3611 near the bottom of the guiding groove. In some embodiments where only the first side wall 3611 is provided, the bottom portion of the first side wall 3611 has a conductive function. The welding tape 6 is guided by the first side wall 3611 to the bottom of the first side wall 3611, supported by the bottom portion of the first side wall 3611, and a circuit is formed.

[0223] Furthermore, the feedback signal can also be sent to the welding system. After receiving the feedback signal, the welding system determines that the welding tape 6 has entered the welding station and waits for welding. At this time, the welding system is activated to weld the bus bar 7 and the welding tape 6, thereby improving the welding efficiency.

[0224] In this embodiment, the scheme of forming a circuit by contacting the welding tape 6 with two second side walls 3612 and generating a feedback signal provides feedback on the correction and welding positioning of the welding tape 6 simultaneously, making the handling process and welding process of the battery cell correlated and improving the processing efficiency of the battery cell.

[0225] In some embodiments, an induction device can also be provided at the bottom of the guiding groove or on the surface of the second side wall 3612. When the welding tape 6 is guided to the bottom of the guiding groove or the surface of the second side wall 3612, the induction device is triggered, thereby determining that the welding tape 6 has moved into place and generating a feedback signal. The induction device is electrically connected to a corresponding controller or feedback mechanism to control the corresponding actions of the feedback mechanism or activate the welding system for welding.

[0226] This embodiment provides that the battery cell combing tape structure can be further improved based on the above embodiments.

[0227] In the above embodiments, the opening direction of the first side wall 3611 faces upward, and the welding tape 6 is placed into the guiding groove from above the guiding groove. In this embodiment, as Figure 23 shown, the comb tooth block 361 further has a third side wall 3613. The third side wall 3613 is provided on one side in the extending direction of the guiding groove and is connected to the first side wall 3611. The distance between two adjacent third side walls 3613 that are close to each other between adjacent comb tooth blocks 361 gradually increases in the direction from the inside of the guiding groove to the outside of the guiding groove.

[0228] That is to say, the two third side walls 3613 open towards the horizontal side of the guiding groove. The third side wall 3613 is located on one side of the guiding groove and is inclined. Please refer to Figure 23, when the solder strip 6 moves horizontally from outside the guiding groove towards the guiding groove (in the direction indicated by the arrow in the figure), the head of the solder strip 6 contacts the third side wall 3613 and is guided by the third side wall 3613 to the first side wall 3611, playing a preliminary rectifying and combing role. Subsequently, the solder strip 6 continues to descend and is corrected by the first side wall 3611. The correction process regarding the first side wall 3611 is as described in the above embodiment and will not be elaborated here.

[0229] In this embodiment, the setting of the third side wall 3613 enables the solder strip 6 not only to move vertically downward from above towards the comb teeth block 361, but also to move horizontally. By moving horizontally, the solder strip 6 is inserted into the guiding groove and then moves downward. Such a setting reduces the positioning requirement of the handling mechanism in the vertical direction. As long as the solder strip 6 is moved close to the vicinity of the comb teeth block 361, the handling mechanism can achieve the combing operation through horizontal or vertical adjustment, improving the fault tolerance rate of the handling mechanism and making the movement adjustment of the solder strip 6 more flexible.

[0230] In one embodiment, the battery cell combing structure includes two sets of comb teeth assemblies arranged in pairs, and each set of comb teeth assemblies includes a plurality of comb teeth blocks 361 arranged at intervals along a straight line. This battery cell combing structure can comb the solder strips 6 of different battery cells on both sides.

[0231] As Figure 24 and Figure 25 shown, a plurality of comb teeth blocks 361 are arranged in two rows along a straight line, and the two rows of comb teeth blocks 361 are arranged in parallel, with a gap formed therebetween. A support plate is arranged between the two rows of comb teeth blocks 361. The support plate is a strip-shaped plate and is used to support the bus bar 7.

[0232] As Figure 24 shown, one side of each comb teeth block 361 close to the other row of comb teeth assemblies has a fourth side wall 3614, and the distance between the two fourth side walls 3614 opposite to each other between the two rows of comb teeth assemblies gradually decreases in the direction from the top to the bottom of the comb teeth block 361 for guiding the bus bar 7 onto the support plate.

[0233] In this embodiment, the support plate is located at a position close to the bottom of the guiding groove. When the solder strip 6 moves close to the bottom of the guiding groove, the part of the solder strip 6 extending out of the guiding groove just overlaps the bus bar 7 and waits for welding in this state.

[0234] Preferably, anti-slip grooves are provided on the support plate to prevent the movement of the bus bar 7.

[0235] In this embodiment, the bottom of the comb tooth block 361 has a base, and the base fixedly connects multiple comb tooth blocks 361. A connecting seat is arranged on one side of the base. The connecting seat is in a strip structure and is arranged on one side of the base along the arrangement direction of the comb tooth blocks 361. Both sides of the battery cell comb strip structure of this embodiment have connecting seats and are detachably installed on an external platform through connecting pieces.

[0236] As Figure 24 shown, in one embodiment, the connecting piece is a buckle structure. The connecting piece is installed on the external platform and buckles the connecting seat on the platform surface. Since the connecting seat adopts a long strip structure, the connecting seat can slide and adjust its position along the arrangement direction of the comb tooth blocks 361 on the platform surface to fix the battery cell comb strip structure at the required position.

[0237] The stack welding machine 1 of this embodiment has a transfer mechanism 40. The bus bar transfer mechanism 40 is used to transport the bus bar 7 from the processing station to the welding station to realize the welding of the welding tape of the battery cell and the bus bar 7.

[0238] The bus bar transfer mechanism of this embodiment includes two transfer racks 410 arranged in parallel. The two transfer racks 410 can be set separately or can be shared racks on the stack welding machine. The transfer racks 410 are fixedly installed on the stack welding machine and are the support structure of the entire bus bar transfer mechanism.

[0239] The bus bar transfer mechanism also has a transfer bracket 420. The transfer bracket 420 extends from one transfer rack 410 to the other transfer rack 410. Both ends of the transfer bracket 420 are slidably connected to the transfer racks 410. In this embodiment, the extension direction of the transfer rack 410 is the first direction, and the transfer bracket 420 can slide along the first direction along the transfer rack 410, so as to realize the displacement adjustment of the transfer bracket 420.

[0240] Specifically, as Figure 26 and Figure 27 shown, the two transfer racks 410 are horizontally arranged, and horizontal first guide rails 411 are respectively arranged on their surfaces. Both ends of the transfer bracket 420 are suspended on the first guide rails 411 through lifting members. In the figure, the lifting member is the first lifting member 423. The first lifting member 423 is in an L shape and hangs above the transfer rack 410. The first lifting member 423 cooperates with the first guide rail 411 and can slide along the first guide rail 411.

[0241] In one embodiment, the lifting member can also be a slider. Both ends of the transfer bracket 420 are connected to the first guide rails 411 of the two transfer racks 410 through sliders.

[0242] As Figure 26As shown, this embodiment has a first driving device 460 for driving the transfer bracket 420 to slide along the first guide rail 411. The first driving device 460 is installed at the end of each transfer rack 410 and is coupled to the first lifting member 423. The first driving device 460 can be a servo motor, which drives the first lifting member 423 to move through a lead screw installed inside the transfer rack 410 to achieve the movement of the transfer bracket 420 in the first direction. The first driving device 460 using a servo motor has the characteristics of high precision and fast response. It is connected to the corresponding lifting member through a transmission mechanism (such as a ball screw or a rack and pinion), and can achieve precise position control.

[0243] In this embodiment, the transfer bracket 420 is connected between two transfer racks 410. The preferred connection method is that the transfer bracket 420 is vertically connected between the two transfer racks 410, so that the movement of the transfer bracket 420 in the vertical direction can be achieved. Of course, it is also possible to connect the transfer bracket 420 to the transfer rack 410 at other angles, and this is not uniquely limited here.

[0244] As Figure 26 shown, in this embodiment, a first mounting seat 430 is installed on the transfer bracket 420. The first mounting seat 430 is slidably connected to the transfer bracket 420 in the second direction along the extension direction of the transfer bracket 420 and is connected to a second driving device 470 for driving the first mounting seat 430.

[0245] Specifically, a second guide rail 425 is provided on the surface of the transfer bracket 420. The second guide rail 425 is in line with the extension direction of the transfer bracket 420. The first mounting seat 430 is installed on the second guide rail 425. Under the push of the second driving device 470, the first mounting seat 430 can slide on the transfer bracket 420 along the second guide rail 425.

[0246] In this embodiment, a mounting seat is provided above the transfer bracket 420. The second driving device 470 is installed on the mounting seat above the transfer bracket 420. The second guide rail 425 is provided on the side of the transfer bracket 420. Thus, the first mounting seat 430 is also located on the side of the transfer bracket 420. An extension block extending above the transfer bracket 420 is provided above the first mounting seat 430. The second driving device 470 is connected to the extension block and drives the first mounting seat 430 to slide by pushing the extension block.

[0247] The second driving device 470 of this embodiment can be a servo motor or a cylinder. Its transmission principle can be the same as that of the first driving device 460 or different. Since the driving principle of the second driving device 470 belongs to the common knowledge in the field, it will not be elaborated in this embodiment.

[0248] In this embodiment, a plurality of first mounting seats 430 are provided on the transfer bracket 420, and the plurality of first mounting seats 430 are arranged at intervals along the extending direction of the transfer bracket 420.

[0249] Since there are certain requirements for the load-bearing of the transfer bracket 420, in one embodiment, the transfer bracket 420 is a double-layer structure. As Figure 27 and Figure 28 shown, the transfer bracket 420 includes two second cross beams 421 that are parallel and arranged vertically, and the two second cross beams 421 are fixedly connected by rib columns 422. Second guide rails 425 are respectively provided on the two second cross beams 421, and the first mounting seat 430 is installed on the two second cross beams 421 through the two second guide rails 425 to improve stability.

[0250] The first lifting member 423 mentioned above connects the edges of the two second cross beams 421 and is hoisted on the transfer frame 410.

[0251] Furthermore, as Figure 26 shown, support slide rails 412 are respectively arranged in the directions of the two transfer frames 410, and the support slide rails 412 are parallel to the transfer frames 410. A second lifting member 424 is further provided below the first lifting member 423, and the second lifting member 424 is fixedly connected to the first lifting member 423 or the end of the lower second cross beam 421. Among them, the second lifting member 424 is hoisted on the support slide rail 412 and can slide along the support slide rail 412.

[0252] In this embodiment, the support slide rail 412 and the second lifting member 424 have the same cooperation principle as the transfer frame 410 and the first lifting member 423, and their functions are also the same. Moreover, the support slide rail 412 and the second lifting member 424 share the load-bearing of the transfer frame 410, thereby improving the load-bearing capacity of the transfer frame 410 and further enhancing the overall stability of the transfer mechanism, which is beneficial to resisting vibration.

[0253] As Figure 26 shown, in this embodiment, a second mounting seat 440 is installed on the first mounting seat 430, and is slidably connected to the first mounting seat 430 in the third direction, and is connected with a third driving device 480 for driving the second mounting seat 440.

[0254] Specifically, as Figure 27 shown, the first mounting seat 430 is in a rectangular frame shape, and the first mounting seat 430 has two vertically arranged third guide rails 431. The second mounting seat 440 is installed on the two third guide rails 431 and slides along the third guide rails 431 under the push of the third driving device 480.

[0255] In this embodiment, the extending direction of the third guide rail 431 is taken as the third direction. According to the description of the above embodiment, the first direction and the second direction can be used as the X-axis and Y-axis directions on the horizontal plane, and the third direction is perpendicular to the first direction and the second direction and can be used as the Z-axis direction. Under the action of the above first driving device 460, second driving device 470 and third driving device 480, the second mounting seat 440 can realize free movement in the X-axis, Y-axis and Z-axis directions.

[0256] The third driving device 480 in this embodiment is the same as the second driving device 470 and can be a servo motor or a cylinder, which will not be elaborated here.

[0257] The second mounting seat 440 is provided with at least one set of suction head assemblies. The suction head assemblies include a plurality of third suction heads 450 arranged along the second direction. The third suction heads 450 face the third direction. The arrangement of the plurality of third suction heads 450 corresponds to the bus bar 7 and can move above the bus bar 7 for sucking or releasing the bus bar 7.

[0258] The third suction head 450 in this embodiment is a suction cup device. Each third suction head 450 is connected with an air circuit, and an electromagnetic valve and an air pump are arranged inside, which can adjust the magnitude and frequency of the suction force as required. The main function of the third suction head 450 is to adsorb and release the bus bar 7 and complete precise position movement under the action of the driving device. By controlling the suction and exhaust of the air circuit of the third suction head 450, the third suction head 450 can grasp and release the bus bar 7.

[0259] In some embodiments, the third suction head 450 can be replaced with other types of gripping devices, such as clamping jaws or vacuum suction cups, to adapt to the needs of different workpieces.

[0260] The bus bar transfer mechanism in this embodiment connects the transfer bracket 420 between two transfer racks 410. The transfer bracket 420 can be slidably connected to the transfer rack 410 in the first direction along the extending direction of the transfer rack 410. The first mounting seat 430 is slidably connected to the transfer bracket 420 in the second direction along the extending direction of the transfer bracket 420. The second mounting seat 440 is slidably connected to the first mounting seat 430 in the third direction. Thereby, the movement of the third suction head 450 in the horizontal plane and the vertical direction is realized. Compared with the traditional transmission structure of a single rack or track, this bus bar transfer mechanism can be compatible with the work of transferring bus bars with a larger length, can better adapt to the vibration situation of the equipment, reduce the vibration influence received by the suction head, and has higher stability.

[0261] A plurality of third suction heads 450 are arranged along the second direction on the second mounting seat 440, and the third suction heads 450 face the third direction. The third driving device 480 directly drives the second mounting seat 440 to move vertically to suck or release the bus bar 7. During the process of sucking or releasing the bus bar, there is no need to move the transfer bracket 420 and the first mounting seat 430, which ensures the overall stability of the mechanism, further reduces the influence of vibration on the suction cup, ensures the accurate positioning of the suction cup and the bus bar 7, improves the transfer accuracy of the bus bar 7, and also improves the welding quality of the bus bar 7.

[0262] In one embodiment, the second mounting seat 440 includes a connecting plate 441 and a mounting plate 442. The connecting plate 441 is slidably connected to the first mounting seat 430. Specifically, the connecting plate 441 is connected to two third guide rails 431. The third driving device 480 is installed on the first mounting seat 430, and the output end of the third driving device 480 is connected to the connecting plate 441.

[0263] The mounting plate 442 is detachably connected to the connecting plate 441. The mounting plate 442 is perpendicular to the connecting plate 441. A plurality of mounting holes 4421 are formed in the mounting plate 442. The third suction heads 450 are installed in the mounting holes 4421, and the third suction heads 450 protrude from the surface of the mounting plate 442 to ensure that the third suction heads 450 in each group are flush and in contact with the bus bar 7 simultaneously.

[0264] As Figure 27 and Figure 28 shown, the mounting plate 442 is arranged parallel to the transfer bracket 420. The mounting holes 4421 extend in the extending direction of the mounting plate 442. At least two third suction heads 450 are arranged in each mounting hole 4421 so that the position of the third suction heads 450 in the mounting holes 4421 is adjustable.

[0265] As Figure 28 shown, in one embodiment, the mounting plate 442 is a single long strip-shaped plate. A plurality of third suction heads 450 are arranged on the long strip-shaped plate. All the third suction heads 450 on the long strip-shaped plate form a set of suction head components, which correspond to a bus bar 7 to suck the bus bar 7. This structure is used for the case where only one bus bar 7 needs to be carried at a time, generally for the welding and handling of the bus bars on both sides of the battery.

[0266] As Figure 27 shown, in one embodiment, the mounting plate 442 is two long strip-shaped plates arranged flush. The two long strip-shaped plates are arranged in parallel and connected by a rib plate 4422. A set of suction head components is arranged on each long strip-shaped plate. This structure is used for the case where two bus bars 7 need to be carried at a time, generally for the welding and handling of the bus bars at the edge and in the middle of the battery.

[0267] Of course, in some embodiments, when it is necessary to carry multiple busbars 7 at one time, the mounting plate 442 can be set as a corresponding plurality of long strip plates. Therefore, the shape of the mounting plate 442 is not uniquely defined either.

[0268] As Figure 27 shown, a support member 443 is provided on one side of the connecting plate 441. The support member 443 is connected to the rib plate 4422, which is arranged at the included angle between the connecting plate 441 and the mounting plate 442, and plays a role of connecting and supporting, improving the structural strength of the second mounting seat 440.

[0269] Embodiment 2

[0270] As Figure 29 shown, this embodiment provides a welding method, including the following steps:

[0271] S1: Separate the glass plate of the photovoltaic panel and the battery string arranged on the glass plate;

[0272] S2: Feed the battery cells into the welding station along the first path,

[0273] S3: Feed the glass plate into the combination station along the second path;

[0274] S4: Weld the solder tape of the battery cells and the busbar at the welding station;

[0275] S5: Feed the welded battery cells into the combination station along the third path and combine them with the glass plate.

[0276] Please refer to Figure 1 and Figure 2 shown, the handling mechanism 50 sucks the battery panel and moves it from the upper space inside the machine housing 10, and places it on the welding platform 30 for welding. The first path is located above the welding platform 30, and the conveying mechanism 20 serves as the second path and is located below the welding platform 30.

[0277] Among them, step S1 includes:

[0278] In response to the matching signal, adjust the pose of the adsorption component so that the position of the adsorption component and the pose of the adsorption head of the adsorption component match the corresponding battery string placed on the glass plate;

[0279] In response to the adsorption signal, control each of the adsorption components to move towards the battery string, so that the adsorption head of the adsorption component closely adheres to the battery string and adsorbs the corresponding battery string;

[0280] In response to the separation signal, lift the adsorption component to synchronously lift the battery string, so as to separate it from the glass plate.

[0281] Specifically, during the production process of photovoltaic panels, when it is necessary to separate the battery string from the glass plate, due to the influence of jitter or error during the transportation or placement of the battery string, its attitude may change. Therefore, it is necessary to adjust the attitude of the adsorption component 53 provided on the glass plate to ensure that its first adsorption head 533 can accurately match the actual attitude of each battery string. In this way, the first adsorption head 533 of the adsorption component 53 can act uniformly on each battery string during adsorption, thereby ensuring that each battery string can be accurately lifted. After the attitude adjustment of the adsorption component 53 is completed, the control system will command the adsorption component 53 to gradually descend until the first adsorption head 533 is in full contact with the surface of the battery string. Since the first adsorption head 533 has made physical contact with the battery string, the vibration generated during the adsorption process will be greatly reduced, avoiding secondary vibration of the battery string and ensuring that the attitude of the battery string when it is adsorbed is the same as when it is placed on the glass plate. When the adsorption component 53 is lifted, the adsorbed battery string will also rise smoothly, thereby realizing the smooth separation of the battery string from the glass plate. The separated battery string and glass plate are respectively transported to different production lines for subsequent processing operations. This separation method not only avoids the mutual interference between the battery string and the glass plate, but also ensures the quality of the battery string in the subsequent stack welding process, thereby improving the overall production efficiency and product reliability of the photovoltaic module.

[0282] Furthermore, the steps of adjusting the position and attitude of the adsorption component 53 include:

[0283] S11. In response to the start signal, lift the carrier table 21 so that the carrier table 21 carries the photovoltaic panel and moves in the direction close to the adsorption component 53.

[0284] S12. In response to the stop signal, obtain the positioning points of the glass plate located on the carrier table 21, and adjust the position of the adsorption component 53 according to the position of the photovoltaic panel expressed by the obtained positioning points, so that the adsorption component 53 is located directly above the photovoltaic panel.

[0285] S13. Obtain the image of the photovoltaic panel placed on the carrier table 21 and extract the attitudes of the respective battery strings located on the glass plate.

[0286] S14. Control the adsorption component 53 to adjust its attitude so that the attitude of the first adsorption head 533 of the adsorption component 53 matches the attitudes of the respective battery strings extracted.

[0287] In the process of photovoltaic panel production, the separation of the battery string from the glass plate is a key step. To achieve this goal, the adsorption assembly 53 needs to gradually approach the carrier table 21 until it contacts the battery string located on the glass plate, facilitating the adsorption operation of the adsorption assembly 53 on the battery string. However, since the photovoltaic panel may be affected by external factors when placed on the carrier table 21, such as vibrations during transportation or operation errors, each photovoltaic panel cannot be accurately positioned at the same location on the carrier table. In addition, the adsorption assembly 53 not only needs to complete the adsorption and separation task of the battery string but also transport the adsorbed battery string to the stacking and soldering table, making it impossible for the position of the adsorption assembly 53 to always remain aligned directly above the carrier table 21.

[0288] Therefore, in actual operation, it is necessary to accurately identify the photovoltaic panels on the carrier table 21 to ensure that the adsorption assembly 53 can be accurately positioned above the carrier table, thus smoothly performing the adsorption operation on the battery string. This process usually relies on a visual recognition system or laser positioning technology, which can capture the position information of the photovoltaic panel in real time and adjust the position of the adsorption assembly 53 through the control system to ensure that the contact point with the battery string is accurate.

[0289] Further analysis reveals that even if the battery string has been preliminarily adapted on the glass plate, due to the possible jitter of the photovoltaic panel during transportation, the postures of the individual battery strings may still not be guaranteed to always be in the standard stacking and soldering posture. Therefore, before the adsorption assembly 53 adsorbs each battery string, it is first necessary to adjust the posture of the first adsorption head 533 so that it can match the posture of the corresponding battery string. This posture adjustment process is usually achieved through high-precision sensors and intelligent algorithms, which can monitor and correct the posture of the first adsorption head 533 in real time to ensure that it does not change the initial posture of the battery string during the adsorption process.

[0290] When each first adsorption head 533 successfully matches the corresponding battery string, the adsorption assembly 53 can smoothly adsorb the battery string, avoiding a secondary change in its posture. Subsequently, the adsorption assembly 53 will further adjust the posture of each first adsorption head 533, and the adsorbed battery string will also adjust its posture accordingly to fully match the posture requirements of the stacking and soldering machine. This fine posture adjustment not only ensures the stability of the battery string during the stacking and soldering process but also significantly improves the quality and consistency of the stacking and soldering, thus providing a strong guarantee for the overall performance of the photovoltaic module.

[0291] Meanwhile, in the step of acquiring the image of the photovoltaic panel placed on the carrier table 21 and extracting the postures of the individual battery strings located on the glass plate, it specifically includes:

[0292] S21, photograph the image of the photovoltaic panel placed on the carrier table 21 and map the obtained image of the photovoltaic panel into a preset coordinate system.

[0293] S22. Read the coordinate values of the endpoints at both ends of each battery string in a preset coordinate system, and connect the endpoints at both ends of each battery string to form a connecting line segment in the preset coordinate system.

[0294] S23. Calculate the angles between each connecting line segment and the same coordinate axis in the preset coordinate system, and infer the offset between two adjacent battery strings based on the angles between two adjacent connecting line segments.

[0295] During the production process of a photovoltaic panel, due to the influence of external factors such as transportation vibration and human operation error during the placement of battery strings, the position or attitude of the battery strings may shift. To ensure the accuracy and consistency of the battery strings in subsequent processing, it is necessary to identify the offset of each battery string and correct it during the adsorption process. Presetting the image of the photovoltaic panel in a coordinate system can project the attitudes of each battery string placed on the glass plate into a unified coordinate system. With the aid of the calibration reference of the coordinate system, the errors between each battery string can be calculated and corrected. A battery string is a long strip-shaped string body formed by connecting multiple solar cells. By generating the line segment formed by connecting the two endpoints of the battery string, the position and attitude of the battery string in the preset coordinate system can be determined with reference to the generated line segment.

[0296] Specifically, since the battery strings are usually arranged closely adjacent to each other during the layout and are all located in the same coordinate system after projection, it is only necessary to calculate the angles between each connecting line segment and a certain coordinate axis in the preset coordinate system, such as the horizontal coordinate axis, and infer the offset of the battery string based on the angles between two adjacent connecting line segments. For example, when each connecting line segment is in a horizontal state in the preset coordinate system, the angle between it and the horizontal coordinate axis can be calculated, and the offset can be inferred based on the size of the angle between adjacent connecting line segments. When it is necessary to correct the battery string, the first suction head 533 only needs to rotate the offset angle to achieve the attitude correction of the adsorbed battery string. Through this calculation method, only the coordinates of both ends of the connecting line segment and the horizontal coordinate need to be obtained to quickly complete the calculation.

[0297] Furthermore, calculating the angle between two adjacent battery strings is more conducive to the extraction of image recognition. During the image extraction process, it is necessary to distinguish the battery strings from the glass plate. Since the glass plate is transparent and the edges of the solar cells that make up the battery string are usually semi-transparent, directly extracting the edges of the solar cells is difficult, which may cause the edges of the recognized battery strings to be mixed with the glass plate. By identifying the two ends of the battery string and performing calculations, the complex recognition of the edges of the solar cells can be avoided, which not only reduces the difficulty of image extraction but also simplifies the correction steps of the battery string.

[0298] The method of this embodiment enables the separation of the battery strings on the photovoltaic panel from the glass plate. Meanwhile, during the separation process, the attitude of the battery strings will be corrected to ensure that the battery strings can be perfectly adapted to the string welding machine during the string welding process. After successfully separating the battery strings from the glass plate, it is necessary to transport the battery strings for the next string welding operation.

[0299] In view of this, this embodiment also provides a conveying method for a photovoltaic panel for string welding of battery strings on the photovoltaic panel. The method includes the above-mentioned photovoltaic panel separation method. After the separation of the battery strings, the conveying method further includes:

[0300] S31. In response to the first in-place signal, control each adsorption component 53 to adjust its attitude, and drive the adsorbed battery strings to jointly adjust their attitudes so that the attitudes of the battery strings match the string welding table.

[0301] S32. In response to the movement signal, move the adsorption component 53, and the adsorption component 53 drives the battery strings with adjusted attitudes to move towards the string welding table.

[0302] S33. In response to the second in-place signal, drive each battery string to descend and place the battery string on the string welding table.

[0303] During the production process of the photovoltaic panel, after the separation of the battery strings from the glass plate, it is necessary to precisely adjust the attitudes of the battery strings to ensure that they perfectly match the attitude requirements of the string welding machine. This step is crucial because the accuracy of the string welding machine directly affects the quality and performance of the subsequent photovoltaic modules. After the attitudes of the battery strings are adjusted, drive the adsorption component 53 to drive these battery strings to move until they are smoothly moved above the string welding machine. During this process, the adsorption component 53 needs to maintain high stability and accuracy to prevent the battery strings from shaking or shifting in attitude during transportation. When the adsorption component 53 lowers each battery string onto the string welding machine, these battery strings can be perfectly adapted to the string welding machine. In this way, the string welding machine can smoothly perform the string welding operation on each battery string to ensure the welding quality and efficiency. Ultimately, this series of operations can not only improve the production efficiency of the photovoltaic module but also significantly improve the overall quality of the module.

[0304] In addition, in the step of driving each battery string to descend and placing the battery string on the string welding table, it specifically includes:

[0305] S41. Control the suction cup base to move towards the adsorption component 53 so that the suction cup of the suction cup base is in virtual contact with the battery string.

[0306] S42. In response to the conversion signal, control the suction cup of the suction cup base to start working and close the first suction head 533 of the adsorption component 53 so that the suction cup of the suction cup base adsorbs each battery cell.

[0307] S43. Control the sucker base to return to its original position so that both ends of each battery string are in contact with the stacking soldering table.

[0308] During the process of stacking and soldering the battery strings, both ends of each battery string will come into contact with the bus bar arranged on the stacker, while the other parts of the battery string need to be supported by the sucker base to ensure that each battery string can maintain a fixed posture during the stacking and soldering process.

[0309] Therefore, when it is necessary to stack and solder the battery strings, the sucker base will first move towards the battery strings adsorbed by each adsorption component 53 until a virtual contact is achieved between the sucker of the sucker base and the battery string. Virtual contact means that there is a slight contact state between the sucker of the sucker base and the surface of the battery string, which can not only limit the position of the battery string but also avoid damaging the battery string due to pressure. After the virtual contact is achieved between the sucker of the sucker base and the battery string, the sucker of the sucker base can limit the position of the battery string while avoiding mechanical damage to it. Subsequently, the sucker of the sucker base is turned on to start adsorbing each battery string. After the sucker of the sucker base has adsorbed all the corresponding battery strings, the upper and lower surfaces of the battery string are respectively supported by the sucker of the sucker base and the first adsorption head 533 of the adsorption component 53. At this time, the first adsorption head 533 of the adsorption component 53 is turned off, so that a virtual contact state is formed between the first adsorption head 533 and the battery string, which only plays a role of supporting and limiting the position and will not generate additional adsorption force on the battery string. The sucker of the sucker base will fix each battery string through the adsorption function, reducing the risk of the battery string changing its posture. When the sucker base descends, each battery string will descend together with the sucker base until both ends of the battery string are in contact with the stacker.

[0310] During the whole conversion process, since there is always the first adsorption head 533 or the sucker acting on the battery string, the posture of the battery string will not shift or shake due to the conversion, thus ensuring the stability of the posture of the battery string. When each battery string is completely transferred to the sucker base, the sucker base will descend until both ends of each battery string are in contact with the bus bar on the stacker, preparing for the subsequent stacking and soldering work.

[0311] In the method of this embodiment, the steps of welding the battery tab solder tape and the bus bar at the welding station include:

[0312] Form a heating area on the surface of the bus bar through electromagnetic induction generated by high-frequency current;

[0313] Arrange magnetic focusing components at intervals along the extension direction of the bus bar on both sides of the high-frequency current, and gather the electromagnetic eddy current on the surface of the bus bar through the magnetic focusing components.

[0314] Specifically, the method includes the following steps:

[0315] S51: Place the bus bar 7 on the bracket 310 arranged in a straight line.

[0316] In this step, by setting up the welding platform as mentioned in the above embodiment, the bus bar 7 is placed entirely on the bracket 310 of the welding platform through the moving mechanism or manipulator. At this time, the bus bar 7 is in place.

[0317] S52: Move the solder tape 6 of the battery cell to contact the surface of the bus bar 7.

[0318] In this step, the battery cell is transported by the moving mechanism or manipulator. The solder tape 6 to be welded on one side of the battery cell faces the welding platform. The solder tape 6 of the battery cell is moved closer to the welding platform through the moving mechanism or manipulator. Specifically, the solder tape 6 of the battery cell is moved closer to the guiding structure 360 beside the bracket 310, and each solder tape 6 of the battery cell enters each heating area correspondingly under the guidance of the guiding structure 360 and contacts the surface of the bus bar 7.

[0319] S53: Extrude the solder tape 6 of the battery cell and the bus bar 7.

[0320] In this step, the pressing mechanism 330 mentioned in the above embodiment descends, so that the pressing block 331 descends to extrude the solder tape 6 and press the solder tape 6 against the surface of the bus bar 7. While pressing, step S54 is started.

[0321] S54: Perform electromagnetic induction heating on the surface of the bus bar 7 to weld the solder tape 6 of the battery cell and the bus bar 7.

[0322] In this step, a heating area is formed on the surface of the bus bar 7 through electromagnetic induction generated by high-frequency current. The solder tape 6 and the bus bar 7 are both in the heating area and are heated and welded.

[0323] In this step, the heating area can also be divided into a plurality of heating sub-areas arranged at intervals along the extension direction of the bus bar 7, and each heating sub-area corresponds to heating one solder tape 6.

[0324] Specifically, the step of dividing the heating area into a plurality of heating sub-areas arranged at intervals along the extension direction of the bus bar 7 includes: arranging magnetic focusing components 322 at intervals along the extension direction of the bus bar 7 on both sides of the high-frequency current, and gathering the electromagnetic eddy current on the surface of the bus bar 7 through the magnetic focusing components 322. In this way, the heating area on the surface of the bus bar 7 is also segmented, so that only the surface of the bus bar 7 in contact with the solder tape 6 can be heated, avoiding heating the entire surface of the bus bar 7, effectively reducing the energy consumption. The saved energy can be used to weld more solder tapes 6, improving the welding efficiency; and to a certain extent, reducing the heating temperature to prevent the temperature from being too high and affecting the battery cell.

[0325] In one embodiment, the step of feeding the glass plate into the combination station along the second path further includes:

[0326] Controlling the speed of the glass plate moving along the second path so that the welded solar cells fed into the combination station along the third path exactly correspond to the glass plate. In this way, by setting the corresponding speed, the welded solar cells exactly correspond to the moving glass plate, and thus they can be directly combined without pausing and waiting for one of them, reducing unnecessary processes and also improving the docking accuracy between the solar cells and the glass plate.

[0327] In the embodiments of the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0328] In the description of this specification, the descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without conflict, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples.

[0329] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A stack welding machine for welding photovoltaic panels, characterized in that, Including: A conveying mechanism for carrying the photovoltaic panel and extending from one side of the stack welding machine to the other side; the photovoltaic panel includes a glass plate and solar cells laid on the surface of the glass plate; A welding platform having a welding station for supporting and welding the solder tapes of the solar cells and the bus bars, and the welding platform welds the solder tapes of the solar cells and the bus bars in response to the control of a controller; A transfer mechanism for transferring the bus bars to the welding station; A handling mechanism, at least partially disposed above the conveying mechanism, the handling mechanism is used to contact the solar cells and execute the following steps in response to the control of the controller: Separate the solar cells from the glass plate; Carry the solar cells to the welding platform so that the solder tapes of the solar cells contact the bus bars; Carry the welded solar cells to the combination of the conveying mechanism and the glass plate.

2. The stack welding machine according to claim 1, wherein, The conveying mechanism includes: A carrier for carrying the photovoltaic panel; A conveyor belt assembly disposed below the carrier, and the conveyor belt assembly extends from the input port of the stack welding machine to the output end; The carrier is connected to the conveyor belt assembly for conveying the glass plate of the photovoltaic panel from one side of the stack welding machine to the other side.

3. The stack welding machine according to claim 1, wherein The handling mechanism includes: A lifting device that moves in the vertical direction in response to the control of the controller; A fixing frame connected to the lifting device, and the fixing frame moves in the vertical direction along with the lifting device; An adsorption assembly spaced apart on the fixing frame, and the adsorption assembly moves in the vertical direction along with the fixing frame; the adsorption assembly sucks and releases the solar cells in response to the control of the controller.

4. The stack welding machine according to claim 3, characterized in that, The adsorption assembly includes: A plurality of brackets evenly distributed on the fixing frame; A plurality of rotating members corresponding to the brackets, and the rotating members are fixed on the brackets; A plurality of first adsorption heads corresponding to the brackets, at least two of the first adsorption heads are symmetrically distributed on both sides of the brackets, the first adsorption heads are connected to the rotating members, and the postures of the first adsorption heads are adjustable under the drive of the rotating members.

5. The stack welding machine according to claim 1, characterized in that The handling mechanism further includes: An image acquisition module communicatively connected to the controller, the image acquisition module captures an image of the photovoltaic panel and transmits the captured image into the controller.

6. The stack welding machine according to any one of claims 1 to 5, characterized in that The handling mechanism includes: A first handling mechanism for separating the solar cells from the glass plate and carrying the solar cells to the welding platform so that the solder tapes of the solar cells contact the bus bars; A second handling mechanism for carrying the welded solar cells to the combination of the conveying mechanism and the glass plate; The first handling mechanism and the second handling mechanism operate synchronously in response to the control of the controller.

7. The stack welding machine according to any one of claims 1 to 5, characterized in that The welding platform includes: A bracket extending along a preset direction to form the welding station for supporting the bus bars; A welding mechanism disposed adjacent to one side of the bracket and capable of heating the bus bars located on the bracket; A pressing mechanism is provided on one side of the bracket and can move towards the bracket in response to the control of the controller to press the cell solder tape against the heating area of the bus bar.

8. The stack welding machine according to any one of claims 1 to 5, characterized in that The welding platform further includes: A support assembly is disposed between the pair of arranged columns and is slidably connected to the guide rails on the columns; A plurality of second suction heads are mounted on the support assembly, and the suction ports of the second suction heads are arranged upward for sucking and supporting the cells; A driving mechanism is connected to the support assembly and drives the support assembly to move along the guide rails in response to the control of the controller.

9. The stack welding machine according to any one of claims 1 to 5, characterized in that, The transfer mechanism includes: A support base is slidably connected to the frame of the stack welding machine; A mounting base is slidably connected to the support base, and the sliding direction of the mounting base is perpendicular to the sliding direction of the support base; A plurality of third suction heads are mounted on the mounting base for sucking or releasing the bus bars.

10. A welding method, characterized in that, It includes: Separating the glass plate of the photovoltaic panel and the cell string provided on the glass plate; Feeding the cells along a first path into the welding station; Feeding the glass plate along a second path into the combination station; Welding the cell solder tape and the bus bar at the welding station; Feeding the welded cells along a third path into the combination station and combining them with the glass plate.

11. The welding method according to claim 10, characterized in that, The step of separating the glass plate of the photovoltaic panel and the cell string provided on the glass plate includes: In response to a matching signal, adjusting the position and pose of the suction assembly so that the position of the suction assembly and the pose of the suction heads of the suction assembly match the corresponding cell string placed on the glass plate; In response to a suction signal, controlling each of the suction assemblies to move towards the cell string so that the suction heads of the suction assemblies closely adhere to and suck the corresponding cell string; In response to a separation signal, lifting the suction assembly to synchronously lift the cell string so that it is separated from the glass plate.

12. The welding method according to claim 10, wherein The step of feeding the welded cells along a third path into the combination station includes: In response to a first in-place signal, controlling each of the suction assemblies to adjust the pose and driving the sucked cell strings to jointly adjust the pose so that the poses of the cell strings match the glass plate; In response to a movement signal, moving the suction assembly, and the suction assembly drives the cell strings with adjusted poses to move towards the glass plate; In response to a second in-place signal, driving each of the cell strings to descend and placing the cell strings on the glass plate.

13. The welding method according to claim 10, characterized in that, The step of welding the cell solder tape and the bus bar at the welding station includes: Forming a heating area on the surface of the bus bar through electromagnetic induction generated by high-frequency current; Providing magnetic focusing assemblies arranged at intervals along the extension direction of the bus bar on both sides of the high-frequency current, and gathering the electromagnetic eddy current on the surface of the bus bar through the magnetic focusing assemblies.

14. The welding method according to claim 10, characterized in that, The step of feeding the glass plate along a second path into the combination station further includes: Controlling the speed of the glass plate moving along the second path so that the welded cells are exactly corresponding to the glass plate when being fed into the combination station along the third path.

Images