A welding apparatus

Abstract

The present application relates to the technical field of battery manufacturing, and specifically discloses a welding device. The welding device comprises a welding mechanism, a conveying mechanism and an AGV transplanting trolley. The welding mechanism is used for top welding or side welding work of a workpiece, and a top welding station one, a side welding station and a top welding station two are arranged around the welding mechanism. The top welding station one, the side welding station and the top welding station two are respectively provided with a pressing mechanism one, a pressing mechanism two and a pressing mechanism three for pressing the workpiece. The conveying mechanism is used for conveying the workpiece to be top welded to the top welding station one and conveying the workpiece to be side welded to the side welding station. The AGV transplanting trolley is used for conveying the workpiece to be top welded to the top welding station two. Different pressing mechanisms are arranged, and different welding requirements of different modules can be realized by using one welding device, and the welding requirements and process routes of different processes such as side welding, top welding and CTP are compatible.

Description

Technical Field

[0001] This invention relates to the field of battery manufacturing technology, and in particular to a welding device. Background Technology

[0002] In the manufacturing process of lithium battery cells, after completing processes such as winding or stacking, casing, and electrolyte injection, the cell casing and cover plate need to be permanently sealed by welding to form a completely sealed battery unit. Laser welding has become a key process for sealing the cover plates of cells such as square aluminum-cased batteries, blade batteries, and CTP (Cell to Pack) large batteries due to its concentrated energy, large weld depth-to-width ratio, good sealing performance, and small deformation.

[0003] However, with the diversification of battery forms (such as square hard-shell, long thin blade, and large-size CTP batteries) and the increasing demand for flexible and intelligent production, existing cover plate laser welding equipment faces severe challenges, mainly due to the following technical defects: The equipment is highly specialized, resulting in a severe lack of production line flexibility: most existing production lines are designed for a single product. Specialized machines for welding the top covers of square battery cells cannot accommodate the long side covers of blade batteries that require side seam welding, nor can they handle the special dimensions and welding paths of large CTP batteries. Producing different products necessitates frequent replacements or resets of the entire production line, leading to large equipment investments, large floor space requirements, and long changeover times, making it impossible to respond to rapidly changing market demands.

[0004] Consistent welding quality presents significant challenges, with clamping and dust removal being key bottlenecks: Cover plate sealing welding demands extremely high standards for weld continuity, airtightness, and appearance. Existing equipment lacks an adaptive, high-precision, flexible clamping system when handling cover plates of different sizes and welding positions (top or side). Uneven clamping force or positioning deviations can easily lead to micro-gaps between the cover plate and the housing during welding, causing burn-through, explosion points, or poor sealing. Simultaneously, welding spatter and fumes adhering to the cell surface, especially potentially contaminating critical areas such as explosion-proof valves (MTPs), pose serious safety hazards. Traditional equipment often separates welding and dust removal, failing to achieve in-situ, real-time cleaning, impacting yield and safety. Summary of the Invention

[0005] Based on this, the purpose of this invention is to provide a welding equipment that allows welding stations on the same production line to perform different welding requirements, such as top welding of square shell modules, side welding of blade modules, and top welding of CTP modules, using different clamping mechanisms and the same set of lasers and galvanometers. Simultaneously, in AGV conveyor mode, the product process sequence can be adjusted according to requirements, reducing the requirements for factory space and equipment placement.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: This invention provides a welding device, comprising a welding mechanism, a conveying mechanism, and an AGV transfer trolley; the welding mechanism is used to perform top welding or side welding operations on workpieces and is surrounded by a top welding station one, a side welding station, and a top welding station two, respectively. Each of the top welding station one, side welding station, and top welding station two is equipped with a clamping mechanism one, a clamping mechanism two, and a clamping mechanism three for clamping the workpieces; the conveying mechanism is used to convey workpieces to be top welded to the top welding station one and to convey workpieces to be side welded to the side welding station; the AGV transfer trolley is used to convey workpieces to be top welded to the top welding station two.

[0007] As a further improvement to the above-mentioned solution of the present invention, the welding mechanism includes a linear module, a robot, and a laser galvanometer assembly. The linear module is used to drive the robot to perform linear reciprocating movement, and the laser galvanometer assembly is installed at the end of the robot.

[0008] As a further improvement of the above-described solution of the present invention, the workpiece to be top-welded is placed on a pallet and conveyed by the conveying mechanism; the clamping mechanism includes a frame and a transfer assembly, two side-pressure assemblies, a moving assembly, and two top-welding pressure head assemblies mounted on the frame. The transplanting assembly includes a linear module and a hook. The linear module is mounted on a frame, and the hook is mounted on a slider of the linear module and can hook onto the tray. The two side-pressure components are arranged opposite each other and respectively on both sides of the linear module. The side-pressure component includes a slide rail, a movable seat, a cylinder one, a cylinder two, a pressure plate one, and a pressure plate two. The slide rail is mounted on the frame one and is perpendicular to the linear module. The movable seat is mounted on the slider of the slide rail. The cylinder one is mounted on the movable seat. The pressure plate one is located on the side of the cylinder one facing the linear module and is connected to the telescopic end of the cylinder one. The pressure plate two is located on the side of the pressure plate one facing the linear module. The cylinder two is located on the side of the pressure plate one away from the linear module and its telescopic end is connected to the pressure plate two. The moving component one includes a mounting frame one, a linear module two, two brackets one, two linear modules nine, and two linear modules three. The mounting frame one is mounted on the frame one. The linear module two is mounted on the mounting frame one and is parallel to the linear module. The two linear modules nine are both vertically mounted on the sliders of the linear module two. The two brackets one are respectively vertically mounted on the sliders of the linear modules nine. The two linear modules three are respectively horizontally mounted at the bottom of the two brackets one and are perpendicular to the linear modules nine. The two top welding pressure head assemblies one are respectively mounted on the sliders of the two linear modules three.

[0009] As a further improvement of the above-mentioned solution of the present invention, the top welding head assembly includes a mounting plate 1, a mounting plate 2, multiple pressure head seats 1, and multiple top welding heads 1; the mounting plate 1 is fixed on the slider of the linear module 3, and the mounting plate 2 is slidably connected to the mounting plate 1; the multiple pressure head seats 1 are arranged side by side at the bottom of the mounting plate 2 and the line direction connecting the multiple pressure head seats 1 is perpendicular to the linear module 3; the pressure head seats 1 are connected to the mounting plate 2 through an elastic element 1, the pressure head seats 1 have a dust suction channel 1 and a dust suction port 1 connected to the dust suction channel 1; the multiple top welding heads 1 are respectively fitted onto the bottom of the multiple pressure head seats 1, and an annular gas channel 1 coaxial with the dust suction channel 1 is formed between the top welding heads 1 and the bottom of the corresponding pressure head seats 1, and an air nozzle 1 connected to the gas channel 1 is installed on the pressure head seats 1.

[0010] As a further improvement of the above-described solution of the present invention, the workpiece to be side-welded is placed on a tray and conveyed by the conveying mechanism; two clamping mechanisms are provided, and the two clamping mechanisms are arranged side by side; the clamping mechanism includes a lifting assembly, a moving assembly, and two side-welding pressure head assemblies; The lifting assembly is used to lift and position the pallet on the conveying mechanism upwards. The lifting assembly includes a lifting base, a lifting platform, and a lifting cylinder. The lifting base is installed on the ground, and the lifting platform is located above the lifting base. The top surface of the lifting base is provided with several guide sleeves, and the bottom of the lifting platform is provided with several guide shafts, which are slidably connected to the guide sleeves. The top surface of the lifting base is also slidably connected with a guide wedge, and the guide wedge is provided with a guide slope. The bottom of the lifting platform is provided with rollers, and the rollers are in rolling contact with the guide slope. The lifting cylinder is installed on the lifting base, and its telescopic end is connected to the guide wedge. The top surface of the lifting platform is provided with several lifting columns, and the top of the lifting columns is provided with a positioning pin. The movable component two includes a mounting frame two, a linear module four, two brackets two, two linear modules ten, and two linear modules five. The mounting frame two is installed on the ground, the linear module four is horizontally installed on the mounting frame two, the two linear modules ten are both installed on the sliders of the linear module four, the two brackets two are vertically installed on the sliders of the linear modules ten, and the two linear modules five are horizontally installed at the bottom of the two brackets two and perpendicular to the linear modules four. The two side welding pressure head assemblies are respectively installed on the sliders of the two linear modules five.

[0011] As a further improvement of the above-mentioned solution of the present invention, the side welding pressure head assembly includes a mounting plate three, multiple pressure head seats two, and multiple side welding pressure heads; the mounting plate three is mounted on the slider of the linear module five; multiple pressure head seats two are arranged side by side on one side of the mounting plate three and the line direction connecting the multiple pressure head seats two is perpendicular to the linear module five; the pressure head seats two are connected to the mounting plate three through elastic elements two, the pressure head seats two have a dust suction channel two and a dust suction port two connected to the dust suction channel two are provided on the pressure head seats two; multiple side welding pressure heads are respectively fitted on the ends of multiple pressure head seats two away from the mounting plate three, and an annular gas channel two coaxial with the dust suction channel two is formed between the side welding pressure head and the corresponding end of the pressure head seat two, and an air nozzle two connected to the gas channel two is installed on the pressure head seat two.

[0012] As a further improvement to the above-mentioned solution of the present invention, the conveying mechanism adopts a mesh logistics line, which includes two parallel conveyor lines for conveying pallets. A transfer conveyor line is provided between the two conveyor lines, and a lifting and transferring component is provided on the conveyor line at a position corresponding to the transfer conveyor line. The lifting and transferring component is used to lift and transfer the pallets on the conveyor line to the transfer conveyor line or to receive the pallets on the transfer conveyor line. A pallet stopper is provided on the conveyor line downstream of the lifting and transferring component.

[0013] As a further improvement to the above-described solution of the present invention, the workpiece to be top-welded is placed on a pallet and transported by the AGV transfer trolley; the AGV transfer trolley includes a submerged AGV and a transfer vehicle that follows the submerged AGV; positioning components for positioning and fixing the transfer vehicle and a power supply for charging the submerged AGV are provided at the two top-welding stations. The present invention features an AGV transfer method, allowing for route adjustments according to process changes and compatibility with different processes.

[0014] As a further improvement of the above-described solution of the present invention, the clamping mechanism three includes two frames two, a moving component three, and two top welding pressure head components two; the two frames two are arranged opposite to each other and are both installed on the ground; the moving component three includes two linear modules six, a mounting frame three, a linear module seven, two brackets three, and two linear modules eight; Two linear modules six are respectively installed on the top of the two frames two; the two ends of the mounting bracket three are respectively connected to the sliders of the two linear modules six; the linear module seven is installed on the mounting bracket three; the two linear modules eight are both vertically installed on the sliders of the linear modules seven; the two brackets three are respectively vertically installed on the sliders of the two linear modules eight; the two top welding pressure head assemblies two are respectively installed at the bottom of the two brackets three.

[0015] As a further improvement of the above-mentioned solution of the present invention, the top welding head assembly 2 includes a mounting plate 4, a mounting plate 5, multiple pressure head seats 3, and multiple top welding heads 2; the mounting plate 4 is fixed to the bottom of the bracket 3, and the mounting plate 5 is slidably connected to the mounting plate 4; multiple pressure head seats 3 are arranged side by side at the bottom of the mounting plate 5, and the line direction connecting the multiple pressure head seats 3 is perpendicular to the linear module 8; the pressure head seats 3 are connected to the mounting plate 5 through elastic elements 3, and the pressure head seats 3 have a dust suction channel 3 and a dust suction port 3 connected to the dust suction channel 3; multiple top welding heads 2 are respectively fitted onto the bottom of multiple pressure head seats 3, and an annular gas channel 3 coaxial with the dust suction channel 3 is formed between the top welding heads 2 and the bottom of the corresponding pressure head seats 3, and an air nozzle 3 connected to the gas channel 3 is installed on the pressure head seats 3.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The welding equipment provided by this invention, by setting different clamping mechanisms, can meet the welding needs of different modules with a single welding device. It can satisfy the top welding of square shell modules, the side welding of blade modules, and the top welding of CTP modules. It is compatible with the welding requirements and process routes of different processes such as side welding, top welding, and CTP. As the core equipment of the production line, the welding station meets the compatibility requirements of the production line. At the same time, in AGV conveying mode, the product process sequence can be adjusted according to needs, reducing the requirements for factory area and equipment placement sequence.

[0017] The present invention uses a pallet to carry the module and move it on the line. The pallet can move in various flow directions through the mesh logistics line. It can support two side welding points at the same time to meet the process side welding requirements. The line is equipped with two top welding stations. When welding the square shell top welding, the pallet is separated from the line for welding, which meets the requirements of square shell top welding.

[0018] In this invention, CTP module welding requires the modules to be placed into the housing before welding. Since the process is at the rear end, it is not performed on the front-end line. Instead, an AGV transfer cart transports the PACKs to be welded to the top welding station two for welding. The AGV route can be adjusted as needed, making it highly adaptable to different factory sizes and process routes. Furthermore, the AGVs, pallets, and transfer carts are all separate, allowing for temporary manual handling in addition to transfer via intermediate equipment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a welding device provided in an embodiment of the present invention; Figure 2 A top view of a welding device provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the welding mechanism in a welding device provided in an embodiment of the present invention; Figure 4This is a schematic diagram of the structure of a conveying mechanism in a welding device according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of a lifting and transferring assembly in a welding device according to an embodiment of the present invention; Figure 6 This is a schematic diagram of a clamping mechanism in a welding device according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of a transfer component in a welding device according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of a side pressure assembly in a welding device according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the structure of a top welding head assembly in a welding equipment according to an embodiment of the present invention; Figure 10 This is a cross-sectional view of a top welding head assembly in a welding device provided in an embodiment of the present invention; Figure 11 This is a schematic diagram of the structure of a clamping mechanism two in a welding device according to an embodiment of the present invention; Figure 12 This is a schematic diagram of the structure of a lifting and positioning assembly in a welding device according to an embodiment of the present invention; Figure 13 This is a schematic diagram of the structure of a moving component two in a welding device according to an embodiment of the present invention; Figure 14 This is a schematic diagram of the structure of a side welding pressure head assembly in a welding equipment according to an embodiment of the present invention; Figure 15 This is a cross-sectional view of a side welding pressure head assembly in a welding device provided in an embodiment of the present invention; Figure 16 This is a schematic diagram of the structure of a clamping mechanism three in a welding device according to an embodiment of the present invention; Figure 17 This is a schematic diagram of the structure of an AGV transfer trolley in a welding equipment according to an embodiment of the present invention; Figure 18 This is a schematic diagram of the structure of a top welding pressure head assembly 2 in a welding equipment according to an embodiment of the present invention; Figure 19 A cross-sectional view of a top welding head assembly 2 in a welding equipment provided in an embodiment of the present invention. Figure 20 This is a schematic diagram of the structure of a positioning component in a welding device according to an embodiment of the present invention; Figure 21 This is another perspective view of an AGV transfer trolley in a welding equipment provided in an embodiment of the present invention.

[0020] Figure label: 100. Welding mechanism; 101. Linear module one; 102. Robot; 103. Laser galvanometer assembly; 200. Conveying mechanism; 201. Mesh logistics line; 202. Transfer conveyor line; 203. Lifting and transplanting assembly; 2031. Lifting cylinder; 2032. Line base; 2033. Transplanting conveyor line; 204. Stopper; 300. AGV transfer trolley; 301. Hidden AGV; 302. Transfer vehicle; 303. Power supply; 304. Positioning frame; 305. Pin positioning assembly; 306. Forklift gear; 400. Clamping Mechanism 1; 401. Frame 1; 402. Linear Module; 403. Hook; 404. Slide Rail; 405. Moving Seat; 406. Cylinder 1; 407. Cylinder 2; 408. Pressure Plate 1; 409. Pressure Plate 2; 410. Mounting Frame 1; 411. Linear Module 2; 412. Bracket 1; 413. Linear Module 3; 414. Mounting Plate 1; 415. Mounting Plate 2; 416. Pressure Head Seat 1; 417. Top Welding Pressure Head 1; 418. Elastic Component 1; 419. Dust Suction Channel 1; 420. Dust Suction Port 1; 421. Gas Channel 1; 422. Air Nozzle 1; 423. Linear Module 9; 500. Clamping Mechanism II; 501. Lifting Base; 502. Lifting Platform; 503. Lifting Cylinder; 504. Guide Sleeve; 505. Guide Shaft; 506. Guide Wedge; 507. Roller; 508. Lifting Column; 509. Positioning Pin; 510. Mounting Frame II; 511. Linear Module IV; 512. Bracket II; 513. Linear Module V; 514. Mounting Plate III; 515. Pressure Head Seat II; 516. Side-Welded Pressure Head; 517. Elastic Component II; 518. Dust Suction Channel II; 519. Dust Suction Port II; 520. Gas Channel II; 521. Air Nozzle II; 522. Linear Module X; 600. Pressing Mechanism Three; 601. Frame Two; 602. Linear Module Six; 603. Mounting Frame Three; 604. Linear Module Seven; 605. Bracket Three; 606. Linear Module Eight; 607. Mounting Plate Four; 608. Mounting Plate Five; 609. Pressing Head Seat Three; 610. Top Welding Pressing Head Two; 611. Elastic Component Three; 612. Dust Suction Channel Three; 613. Dust Suction Port Three; 614. Gas Channel Three; 615. Air Nozzle Three; 700. Tray. Detailed Implementation

[0021] To facilitate understanding of the present invention, a more comprehensive description will be given below with reference to specific embodiments. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of the present invention.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0023] In response to the technical problems of existing welding equipment being highly specialized, having insufficient production line flexibility, and mostly being designed for single products, this embodiment provides a welding equipment that can accommodate different welding requirements such as top welding of square shell modules, side welding of blade modules, and top welding of CTP modules.

[0024] Reference Figure 1 , Figure 2 This embodiment proposes a welding device, which includes a welding mechanism 100, a conveying mechanism 200, an AGV transfer trolley 300, a first pressing mechanism 400, a second pressing mechanism 500, and a third pressing mechanism 600.

[0025] The welding mechanism 100 is used for top welding of the shell module, side welding of the blade module, or top welding of the CTP module. A top welding station one, a side welding station, and a top welding station two are arranged around the welding mechanism 100. (Combined with...) Figure 3 The welding mechanism 100 in this embodiment includes a linear module 101, a robot 102, and a laser galvanometer assembly 103. The linear module 101 is fixed to the ground and drives the robot 102 to perform linear reciprocating movement. In this embodiment, the robot 102 is a conventional six-axis robot. The laser galvanometer assembly 103 is installed at the end of the robot 102, and its working range can be expanded through the linear module 101 and the six-axis robot 102. Referring to the figures, the laser galvanometer assembly 103 in this embodiment uses existing technology, which will not be elaborated here. The laser galvanometer assembly 103 determines the distance using a distance displacement sensor and emits a laser through the galvanometer system to perform laser welding on the workpiece. The optical fiber is fixed by a fiber optic bracket to prevent bending during movement.

[0026] The conveying mechanism 200 is used to convey the pallet 700 carrying the square shell module to be top-welded to the top welding station, and the pallet 700 carrying the blade module to be side-welded to the side welding station. Combined with... Figure 4In this embodiment, the conveying mechanism 200 adopts a mesh logistics line 201 from the prior art. The mesh logistics line 201 includes two parallel conveyor lines for conveying pallets 700. One conveyor line is used for conveying, and the other conveyor line can be used for storing pallets, and can hold different pallets. A transfer conveyor line 202 is provided between the two conveyor lines, and a lifting and transferring assembly 203 is provided on the conveyor line corresponding to the transfer conveyor line 202. The lifting and transferring assembly 203 is used to lift and transfer the pallets 700 on the conveyor line to the transfer conveyor line 202 or to receive the pallets 700 on the transfer conveyor line 202. A stopper 204 for stopping the pallets 700 is provided on the conveyor line downstream of the lifting and transferring assembly 203. The lifting and transferring assembly 203 and the stopper 204 used in this embodiment are both existing mature technologies, and will not be described in detail here. Among them, combined with Figure 5 The lifting and transferring assembly 203 is mainly used for changing the flow direction of the pallet 700 on the production line. The lifting cylinder 2031 pushes the line seat 2032 upwards, causing the pallet 700 to detach from the original flow direction of the production line. The pallet 700 is then moved via the transfer conveyor line 2033, completing the multi-directional movement of the pallet 700 on the mesh logistics line. When the conveyor mechanism 200 delivers the pallet 700 to its destination, the stopper 294 stops the pallet. At this time, the pallet 700 rests on the lifting and transferring assembly 203. The lifting and transferring assembly 203 then transports the pallet 700 to the transfer conveyor line 202, which then transports the pallet 700 to another conveyor line. The mesh logistics line 201 allows for flexible transport, meeting the requirements of dual-station operations. It can also be used to store pallets during product switching, facilitating pallet changeover with a single click.

[0027] A clamping mechanism 400 is installed at the top welding station 1 to clamp the square shell module to be welded at the top welding station 1. In this embodiment, two clamping mechanisms 400 are provided and are respectively installed on both sides of the robot. Figure 6 In this embodiment, the clamping mechanism 400 includes a frame 401 and a transfer assembly, two side pressure assemblies, a moving assembly, and two top welding head assemblies mounted on the frame 401.

[0028] Combination Figure 7 The transfer assembly includes a linear module 402 and a hook 403. The linear module 402 is mounted on the frame 401, and the hook 403 is mounted on the slider of the linear module 402 and can hook onto the tray 700. The linear module 402 drives the hook 403 to move linearly to the mesh logistics line 201. When the mesh logistics line 201 conveys the square shell module to be top-welded to the top welding station, the lifting transfer assembly 202 at that location lifts the tray 700, the hook 403 hooks onto the hole on the tray 700, and then the linear module 402 drives the hook 403 to move back.

[0029] Two side-pressure components are arranged opposite each other and respectively on both sides of the linear module 402, combined with Figure 8 The side-pressure assembly includes a slide rail 404, a movable seat 405, a first cylinder 406, a second cylinder 407, a first pressure plate 408, and a second pressure plate 409. The slide rail 404 is mounted on a frame 401 and is perpendicular to the linear module 402. The movable seat 405 is mounted on a slider of the slide rail 404. The first cylinder 406 is mounted on the movable seat 405. The first pressure plate 408 is located on the side of the first cylinder 406 facing the linear module 402 and is connected to the telescopic end of the first cylinder 406. The second pressure plate 409 is located on the side of the first pressure plate 408 facing the linear module 402. The second cylinder 407 is mounted on the side of the first pressure plate 408 away from the linear module 402, and its telescopic end is connected to the second pressure plate 409. When the tow hook 403 moves the tray 700 between the two side-pressure components, the cylinders 406 of the two side-pressure components extend, causing the pressure plate 408 to press against the side of the module to secure it and maintain its shape. When the module is relatively small, the cylinder 407 drives the pressure plate 409 to press against the side of the module. A buffer can be installed on the frame 401 to limit the forward and backward travel of the moving seat.

[0030] The moving component includes a mounting bracket 410, a linear module 411, two supports 412, two linear modules 423, and two linear modules 413. The mounting bracket 410 is mounted on a frame 401. The linear module 411 is mounted on the mounting bracket 410 and parallel to the linear module 402. Both linear modules 423 are vertically mounted on the sliders of the linear module 411. The two supports 412 are vertically mounted on the sliders of the two linear modules 423, respectively. The two linear modules 413 are horizontally mounted at the bottom of the two supports 412 and perpendicular to the linear module 411. Two top-welding head assemblies are mounted on the sliders of the two linear modules 413, respectively. Linear module 2 drives linear module 9 423 to move linearly, linear module 9 423 drives bracket 1 to move vertically, and linear module 3 drives top welding head assembly 1 to move horizontally, thereby adjusting the position of top welding head assembly 1 in the XYZ directions so that top welding head assembly 1 can press the welding position of the module and adapt to modules of different sizes.

[0031] Combination Figure 9-10The top welding pressure head assembly includes a mounting plate 414, a mounting plate 415, multiple pressure head seats 416, and multiple top welding pressure heads 417. The mounting plate 414 is fixed to the slider of the linear module 413, and the mounting plate 415 is slidably connected to the mounting plate 414. Multiple pressure head seats 416 are arranged side-by-side at the bottom of the mounting plate 415, and the line connecting the multiple pressure head seats 416 is perpendicular to the linear module 413. The pressure head seats 416 are connected to the mounting plate 415 via an elastic element 418. Each pressure head seat 416 has a dust suction channel 419 and a dust suction port 420 connected to the dust suction channel 419. Multiple top welding heads 417 are respectively fitted onto the bottom of multiple head holders 416, forming an annular gas channel 421 coaxial with the dust suction channel 419 between the top welding heads 417 and the bottom of the corresponding head holders 416. A nozzle 422 connected to the gas channel 421 is installed on the head holder 416. Protective gas is supplied into the gas channel through the nozzle, ensuring uniform protection of the welding surface from oxidation. The annular protective gas channel is closer to the welding surface, ensuring the welding surface is fully filled with protective gas. The dust suction port is used for external negative pressure equipment for dust removal. The separate structure design of the head holder 416 and the top welding head facilitates the formation of the dust suction channel 419 and the gas channel. The independent design of the dust suction port and the protective gas port reduces mutual disturbance between the dust removal airflow and the protective airflow.

[0032] It should be noted that the elastic element 418 in this embodiment adopts the existing connecting rod plus spring structure, combined with Figure 10 The connecting rod passes through the mounting plate 415 and slides with the mounting plate 415. The connecting rod is provided with a head to prevent it from falling off. The connecting rod is provided with a threaded section that is threaded to the pressure head seat 416. The spring is sleeved at one end of the connecting rod located between the pressure head seat 416 and the mounting plate 415. When the top welding pressure head 417 contacts the workpiece to be welded, it squeezes the spring, so that the entire pressure head can move up and down to relieve pressure.

[0033] The clamping mechanism 2500 is located at the side welding station and is used to clamp the blade module to be top-welded at the side welding station. Combined with... Figure 11 In this embodiment, two clamping mechanisms 500 are provided, and the two clamping mechanisms 500 are arranged side by side. The clamping mechanism 500 includes a lifting assembly, a moving assembly 2, and a side welding pressure head assembly.

[0034] The lifting assembly is used to lift and position the pallet 700 on the conveyor mechanism 200, in conjunction with... Figure 12The lifting assembly includes a lifting base 501, a lifting platform 502, and a lifting cylinder 503. The lifting base 501 is installed on the ground, and the lifting platform 502 is located above the lifting base 501. Several guide sleeves 504 are provided on the top surface of the lifting base 501, and several guide shafts 505 are provided on the bottom of the lifting platform 502, with each guide shaft 505 slidably connected to one of the guide sleeves 504. A guide wedge 506 with a guide slope is also slidably connected to the top surface of the lifting base 501. Rollers 507 are provided on the bottom of the lifting platform 502, and the rollers 507 roll in contact with the guide slope. The lifting cylinder 503 is installed on the lifting base 501, and its telescopic end is connected to the guide wedge 506. Several lifting columns 508 are provided on the top surface of the lifting platform 502, and locating pins 509 are provided at the top of each lifting column 508. Once the pallet 700 carrying the module to be side-welded is in place, the lifting cylinder 503 extends, the roller 507 moves upward along the guide slope, the lifting platform 502 is lifted, and the positioning pin 509 of the lifting column 508 is inserted into the positioning hole at the bottom of the pallet 700, thus completing the lifting and positioning of the pallet 700.

[0035] The second movable component includes a mounting bracket 2 510, a linear module 4 511, two supports 2 512, two linear modules 10 522, and two linear modules 513. The mounting bracket 2 510 is installed on the ground. The linear module 4 511 is horizontally installed on the mounting bracket 2 510. Both linear modules 10 522 are installed on the sliders of the linear module 4 511. The two supports 2 512 are vertically installed on the sliders of the two linear modules 10 522, respectively. The two linear modules 513 are horizontally installed at the bottom of the two supports 2 512 and perpendicular to the linear module 4 511. Two side-welding pressure head assemblies are respectively installed on the sliders of the two linear modules 513. Linear module 4 511 drives linear module 10 522 to move horizontally, linear module 10 522 drives bracket 2 512 to move vertically, and linear module 5 513 drives the side welding head assembly to move horizontally, thereby adjusting the position of the side welding head assembly in the XYZ directions so that the side welding head assembly can press the module's welding position.

[0036] Combination Figure 14-15The side-welding pressure head assembly includes a mounting plate 3 514, multiple pressure head seats 2 515, and multiple side-welding pressure heads 516. The mounting plate 3 514 is mounted on the slider of the linear module 513. Multiple pressure head seats 2 515 are arranged side-by-side on one side of the mounting plate 3 514, and the line connecting the multiple pressure head seats 2 515 is perpendicular to the linear module 513. Pressure head seats 2 515 are connected to the mounting plate 3 514 via elastic elements 2 517. Each pressure head seat 2 515 has a dust suction channel 2 518 and a dust suction port 2 519 connected to the dust suction channel 2 518. Multiple side-welding pressure heads 516 are respectively fitted onto the ends of multiple pressure head seats 515 away from the mounting plate 514, and an annular gas channel 520 coaxial with the dust suction channel 518 is formed between the side-welding pressure head 516 and the corresponding pressure head seat 515. A nozzle 521 communicating with the gas channel 520 is installed on the pressure head seat 515. Protective gas is supplied into the gas channel 520 through the nozzle 521 to ensure uniform protection of the welding surface from oxidation. The annular protective gas channel 520 is closer to the welding surface, ensuring the welding surface is filled with protective gas. The dust suction port 519 is used for external negative pressure equipment for dust removal. The separate structure design of the pressure head seat 515 and the side-welding pressure head 516 facilitates the formation of the dust suction channel and the gas channel. The dust suction port and the protective gas port are designed independently to reduce mutual disturbance between the dust removal airflow and the protective airflow.

[0037] It should be noted that the elastic element 517 in this embodiment adopts the existing connecting rod plus spring structure, combined with Figure 15 The connecting rod passes through the mounting plate 3 514 and slides with the mounting plate 3 514. The connecting rod is provided with a head to prevent it from falling off. The connecting rod is provided with a threaded section that is threaded to the pressure head seat 2 515. The spring is sleeved at one end of the connecting rod located between the pressure head seat 2 515 and the mounting plate 3 514. When the side welding pressure head 516 contacts the workpiece to be welded, it squeezes the spring, so that the entire side welding pressure head 516 can move up and down to relieve pressure.

[0038] The clamping mechanism 3600 is located at the top welding station 2 and is used to clamp the CTP module to be welded at the top welding station 2. Combined with... Figure 16In this embodiment, the clamping mechanism 600 includes two frames 601, a moving assembly 601, and two top welding head assemblies 602. The two frames 601 are arranged opposite each other and are both mounted on the ground. The moving assembly 601 includes two linear modules 602, a mounting frame 603, a linear module 604, two supports 605, and two linear modules 606. The two linear modules 602 are respectively mounted on the top of the two frames 601. Both ends of the mounting frame 603 are connected to the sliders of the two linear modules 602. The linear module 604 is mounted on the mounting frame 603. The two linear modules 606 are both vertically mounted on the sliders of the linear module 604. The two supports 605 are respectively mounted on the sliders of the two linear modules 606. The two top welding head assemblies 605 are respectively mounted on the bottom of the two supports 605. The linear module 602 drives the mounting bracket 3 603 to move horizontally, the linear module 7 604 drives the linear module 8 606 to move horizontally, and the linear module 8 606 drives the bracket 3 605 to move vertically, thereby adjusting the position of the top welding head assembly 2 in the XYZ directions so that the top welding head assembly 2 can press the module's welding position.

[0039] Combination Figure 17-18 The top welding pressure head assembly includes a mounting plate 4 607, a mounting plate 5 608, multiple pressure head seats 3 609, and multiple top welding pressure heads 2 610. Mounting plate 4 607 is fixed to the slider of linear module 8 606, and mounting plate 5 608 is slidably connected to mounting plate 4 607. Multiple pressure head seats 3 609 are arranged side-by-side at the bottom of mounting plate 5 608, and the line connecting the multiple pressure head seats 3 609 is perpendicular to linear module 8 606. Pressure head seats 3 609 are connected to mounting plate 5 608 via elastic element 3 611. Pressure head seats 3 609 have a dust suction channel 3 612 and a dust suction port 3 613 connected to the dust suction channel 3 612. Multiple top welding heads 610 are respectively fitted onto the bottom of multiple head seats 609, and an annular gas channel 614, coaxial with the dust suction channel 612, is formed between the top welding heads 610 and the bottom of the corresponding head seats 609. A nozzle 615, communicating with the gas channel 614, is installed on the head seat 609. Protective gas is supplied to the gas channel 614 through the nozzle 615, ensuring uniform protection of the welding surface from oxidation. The annular protective gas channel 614 is closer to the welding surface, ensuring the welding surface is filled with protective gas. The dust suction port 613 is used for external negative pressure equipment for dust removal. The separate structure design of the head seat 609 and the top welding head 610 facilitates the formation of the dust suction channel 612 and the gas channel 614. The dust suction port and the protective gas port are designed independently, reducing mutual disturbance between the dust removal airflow and the protective airflow.

[0040] It should be noted that the elastic element 611 in this embodiment adopts the existing connecting rod plus spring structure, combined with Figure 18The connecting rod passes through the mounting plate 5 608 and slides with the mounting plate 5 608. The connecting rod is provided with a head to prevent it from falling off. The connecting rod is provided with a threaded section that is threaded to the pressure head seat 3 609. The spring is sleeved at one end of the connecting rod located between the pressure head seat 3 609 and the mounting plate 5 608. When the top welding pressure head contacts the workpiece to be welded, it squeezes the spring, so that the entire top welding pressure head can move up and down to relieve pressure.

[0041] The AGV transfer trolley 300 is used to transport the pallet 700 carrying the CTP module to be top-welded to the top-welding station two. Combined with... Figure 19 In this embodiment, the AGV transfer vehicle includes a submerged AGV 301 and a transfer vehicle 302 that moves with the submerged AGV 301. Positioning components for positioning and fixing the transfer vehicle 302 and a power supply 303 for charging the submerged AGV 301 are provided at two locations on the top welding station. Combined with... Figure 20 The positioning assembly includes two opposing positioning frames 304. A power supply 303 is mounted on one of the positioning frames 304. A pin positioning assembly 305 is installed on each positioning frame 304 to position the pallet 700. After the submersible AGV 301 moves the pallet 700 between the two positioning frames 304, the pallet 700 lands precisely on top of the two positioning frames, and the pin of the pin positioning assembly 305 extends to position the pallet 700. The pin positioning assembly 305 here uses an existing cylinder-driven pin mechanism, which will not be elaborated upon here. Combined with... Figure 21 The pallet 700 used for transporting CTP battery cell modules can be equipped with forklift teeth 306, allowing forklifts to lift the pallet 700 and place it onto the transfer vehicle 302, or it can be placed manually. The transfer vehicle can move with the submersible AGV or transfer independently. The transfer vehicle has two drawers at the front and rear for easy installation of tools and materials. The pallet is positioned and supported by positioning pins and positioning seats.

[0042] The working principle of the welding equipment in this embodiment will be explained next.

[0043] When performing top welding on the square-shell battery cell module: Pallet 700 carrying the square-shell battery cell module arrives at the mesh logistics line of top welding station one. The lifting and transfer component on the conveyor line lifts pallet 700, hook 403 hooks pallet 700, and linear module 402 drives hook 403 to move, dragging pallet 700 to the working position. Two side pressure components press the two sides of the square-shell battery cell module on pallet 700. Moving component one adjusts the position of top welding head component one and drives top welding head component one to move down. Top welding head one 41 7. The pressing mechanism 100 presses down on the welding position of the square-shell battery cell module. The linear module 101 drives the six-axis robot 102 to move to the appropriate position. The six-axis robot 102 then drives the laser galvanometer assembly 103 to the appropriate position. The laser galvanometer assembly 103 determines the distance to the square-shell battery cell module and adjusts its position accordingly. The laser galvanometer assembly 103 emits light and performs welding sequentially. After welding is completed, the transfer assembly pushes the tray 700 back to the mesh logistics line and lifts the transfer assembly, allowing it to continue flowing along the line. Welding is then complete. In this embodiment, two pressing mechanisms 400 are provided. The welding mechanism 100 can alternately perform top welding on the square-shell battery cell modules pressed by the two pressing mechanisms 400.

[0044] Side welding process: The pallet 700 carrying the bladed battery cell module arrives at the mesh logistics line of the side welding station. The lifting component positions and lifts the pallet 700. The moving component 2 moves the side welding pressure head 516 component to the appropriate position. Multiple side welding pressure heads 516 press the side welding module to be welded. The linear module 101 drives the six-axis robot 102 to the appropriate position. The six-axis robot 102 drives the laser galvanometer component 103 to the appropriate position. The laser galvanometer component 103 judges the distance to the square battery cell module and adjusts the appropriate position. The laser galvanometer component 103 emits light and welds sequentially. After welding one side, the other side is welded. In this embodiment, two clamping mechanisms 500 are set. The welding mechanism 100 can alternately perform side welding on the modules clamped by the two clamping mechanisms 500.

[0045] CTP welding process: The AGV transfer trolley carries the tray 700 containing the CTP cell module to the top welding station 2. The positioning component positions the tray 700, the submerged AGV 301 drops down, and the tray 700 lands on two positioning frames. The pin positioning mechanism inserts into the positioning tray 700. The moving component 3 carries the top welding head component 2 to the working position and presses the module. The linear module 101 drives the six-axis robot 102 to move to the appropriate position. The six-axis robot 102 drives the laser galvanometer component 103 to move to the appropriate position. The laser galvanometer component 103 judges the distance to the square-shell cell module and adjusts the appropriate position. The laser galvanometer component 103 emits light and welds sequentially.

[0046] It should be noted that when a component is said to be "installed on" another component, it can be directly on the other component or it may be in a component that is centered on it. When a component is said to be "set on" another component, it can be directly set on the other component or it may also be in a component that is centered on it. When a component is said to be "fixed to" another component, it can be directly fixed to the other component or it may also be in a component that is centered on it.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0048] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A welding device, characterized in that, It includes a welding mechanism, a conveying mechanism, and an AGV transfer trolley; the welding mechanism is used to perform top welding or side welding operations on the workpiece, and a top welding station one, a side welding station, and a top welding station two are arranged around the welding mechanism. A clamping mechanism one, a clamping mechanism two, and a clamping mechanism three for clamping the workpiece are respectively arranged at the top welding station one, the side welding station, and the top welding station two; the conveying mechanism is used to transport the workpiece to be top welded to the top welding station one and to transport the workpiece to be side welded to the side welding station; the AGV transfer trolley is used to transport the workpiece to be top welded to the top welding station two; The workpiece to be top-welded is placed on a pallet and conveyed by the conveying mechanism; the clamping mechanism includes a frame and a transfer assembly, two side-pressure assemblies, a moving assembly, and two top-welding pressure head assemblies mounted on the frame; The transfer assembly includes a linear module and a hook. The linear module is mounted on a frame, and the hook is mounted on a slider of the linear module and can hook onto the tray. The two side-pressure components are arranged opposite each other and respectively on both sides of the linear module. The side-pressure component includes a slide rail, a movable seat, a cylinder one, a cylinder two, a pressure plate one, and a pressure plate two. The slide rail is mounted on the frame one and is perpendicular to the linear module. The movable seat is mounted on the slider of the slide rail. The cylinder one is mounted on the movable seat. The pressure plate one is located on the side of the cylinder one facing the linear module and is connected to the telescopic end of the cylinder one. The pressure plate two is located on the side of the pressure plate one facing the linear module. The cylinder two is located on the side of the pressure plate one away from the linear module and its telescopic end is connected to the pressure plate two. The moving component one includes a mounting frame one, a linear module two, two brackets one, two linear modules nine, and two linear modules three. The mounting frame one is mounted on the frame one. The linear module two is mounted on the mounting frame one and is parallel to the linear module. The two linear modules nine are both vertically mounted on the sliders of the linear module two. The two brackets one are respectively vertically mounted on the sliders of the linear modules nine. The two linear modules three are respectively horizontally mounted at the bottom of the two brackets one and perpendicular to the linear module two. The two top welding pressure head assemblies one are respectively mounted on the sliders of the two linear modules three.

2. The welding equipment according to claim 1, characterized in that, The welding mechanism includes a linear module, a robot, and a laser galvanometer assembly. The linear module is used to drive the robot to perform linear reciprocating movement, and the laser galvanometer assembly is installed at the end of the robot.

3. The welding equipment according to claim 1, characterized in that, The top welding head assembly includes a mounting plate 1, a mounting plate 2, multiple pressure head seats 1, and multiple top welding heads 1. The mounting plate 1 is fixed on the slider of the linear module 3, and the mounting plate 2 is slidably connected to the mounting plate 1. The multiple pressure head seats 1 are arranged side by side at the bottom of the mounting plate 2, and the line connecting the multiple pressure head seats 1 is perpendicular to the linear module 3. The pressure head seats 1 are connected to the mounting plate 2 through an elastic element 1. The pressure head seats 1 have a dust suction channel 1 and a dust suction port 1 connected to the dust suction channel 1. The multiple top welding heads 1 are respectively fitted onto the bottom of the multiple pressure head seats 1, and an annular gas channel 1 coaxial with the dust suction channel 1 is formed between the top welding heads 1 and the bottom of the corresponding pressure head seats 1. An air nozzle 1 connected to the gas channel 1 is installed on the pressure head seats 1.

4. The welding equipment according to claim 1, characterized in that, The workpiece to be side-welded is placed on a pallet and conveyed by the conveying mechanism; two clamping mechanisms are provided, and the two clamping mechanisms are arranged side by side; the clamping mechanism includes a lifting assembly, a moving assembly, and a side-welding pressure head assembly; The lifting assembly is used to lift and position the pallet on the conveying mechanism upwards. The lifting assembly includes a lifting base, a lifting platform, and a lifting cylinder. The lifting base is installed on the ground, and the lifting platform is located above the lifting base. The top surface of the lifting base is provided with several guide sleeves, and the bottom of the lifting platform is provided with several guide shafts, which are slidably connected to the guide sleeves. The top surface of the lifting base is also slidably connected with a guide wedge, and the guide wedge is provided with a guide slope. The bottom of the lifting platform is provided with rollers, and the rollers are in rolling contact with the guide slope. The lifting cylinder is installed on the lifting base, and its telescopic end is connected to the guide wedge. The top surface of the lifting platform is provided with several lifting columns, and the top of the lifting columns is provided with a positioning pin. The movable component two includes a mounting frame two, a linear module four, two brackets two, two linear modules ten, and two linear modules five. The mounting frame two is installed on the ground, the linear module four is horizontally installed on the mounting frame two, the two linear modules ten are both installed on the sliders of the linear module four, the two brackets two are vertically installed on the sliders of the linear modules ten, and the two linear modules five are horizontally installed at the bottom of the two brackets two and perpendicular to the linear modules four. The two side welding pressure head assemblies are respectively installed on the sliders of the two linear modules five.

5. The welding equipment according to claim 4, characterized in that, The side welding head assembly includes a mounting plate three, multiple head seats two, and multiple side welding heads; the mounting plate three is mounted on the slider of the linear module five; multiple head seats two are arranged side by side on one side of the mounting plate three, and the line direction connecting the multiple head seats two is perpendicular to the linear module five; the head seats two are connected to the mounting plate three through elastic elements two, and the head seats two have a dust suction channel two and a dust suction port two connected to the dust suction channel two; multiple side welding heads are respectively fitted on the ends of multiple head seats two away from the mounting plate three, and an annular gas channel two coaxial with the dust suction channel two is formed between the side welding head and the corresponding head seat two ends; an air nozzle two connected to the gas channel two is installed on the head seat two.

6. The welding equipment according to claim 1, characterized in that, The conveying mechanism adopts a mesh logistics line, which includes two parallel conveyor lines for conveying pallets. A transfer conveyor line is provided between the two conveyor lines, and a lifting and transferring component is provided on the conveyor line at a corresponding position to the transfer conveyor line. The lifting and transferring component is used to lift and transfer pallets on the conveyor line to the transfer conveyor line or to receive pallets on the transfer conveyor line. A pallet stop is provided on the conveyor line downstream of the lifting and transferring component.

7. The welding equipment according to claim 1, characterized in that, The workpiece to be welded is placed on a pallet and transported by the AGV transfer trolley; the AGV transfer trolley includes a lurking AGV and a transfer vehicle that moves with the lurking AGV. The two welding stations are equipped with positioning components for positioning and fixing the transfer vehicle and a power supply for charging the lurking AGV.

8. The welding equipment according to claim 1, characterized in that, The clamping mechanism three includes two frames two, a moving component three, and two top welding head components two; the two frames two are arranged opposite each other and are both installed on the ground; the moving component three includes two linear modules six, a mounting frame three, a linear module seven, two brackets three, and two linear modules eight; Two linear modules six are respectively installed on the top of the two frames two; the two ends of the mounting bracket three are respectively connected to the sliders of the two linear modules six; the linear module seven is installed on the mounting bracket three; the two linear modules eight are both vertically installed on the sliders of the linear modules seven; the two brackets three are respectively vertically installed on the sliders of the two linear modules eight; the two top welding pressure head assemblies two are respectively installed at the bottom of the two brackets three.

9. The welding equipment according to claim 8, characterized in that, The top welding head assembly 2 includes a mounting plate 4, a mounting plate 5, multiple head seats 3, and multiple top welding heads 2; the mounting plate 4 is fixed to the bottom of the bracket 3, and the mounting plate 5 is slidably connected to the mounting plate 4; multiple head seats 3 are arranged side by side at the bottom of the mounting plate 5, and the line direction connecting the multiple head seats 3 is perpendicular to the linear module 8; the head seats 3 are connected to the mounting plate 5 through elastic elements 3, and the head seats 3 have a dust suction channel 3 and a dust suction port 3 connected to the dust suction channel 3; multiple top welding heads 2 are respectively fitted onto the bottom of multiple head seats 3, and an annular gas channel 3 coaxial with the dust suction channel 3 is formed between the top welding heads 2 and the bottom of the corresponding head seats 3, and an air nozzle 3 connected to the gas channel 3 is installed on the head seats 3.

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