Tab welding device

Abstract

This application belongs to the technical field of welding devices and provides an ear tab combined welding device, which includes a disk dividing mechanism, including a disk and a base. The disk is rotatably connected to the base, and the base is provided with a number of workstations, and the number of workstations are spaced apart on the circumferential side of the disk; a fixture mechanism, and the number of fixture mechanisms are installed on the disk and are arranged corresponding to the number of workstations; a number of open fixture mechanisms, which are arranged corresponding to some of the fixture mechanisms; a pole ear searching mechanism, an adjustment mechanism, and a welding mechanism are sequentially arranged at the number of workstations; a positioning mechanism, and the positioning mechanism and the pole ear searching mechanism are respectively located on both sides of the fixture mechanism corresponding to the pole ear searching mechanism and are both installed on the base. The above-mentioned ear tab combined welding device can solve the technical problems in the prior art that the linear assembly line working mode has low space utilization rate, poor flexibility, and it is difficult to coordinate the positions of the ear tabs and the welding structure, which easily leads to the failure of ear tab combined welding.

Description

Technical Field

[0001] This application belongs to the technical field of welding devices. More specifically, it relates to an ear welding device. Background Art

[0002] The ear is a metal conductor led out from the positive and negative electrodes of the battery cell. In the prior art, the ear welding is usually carried out in a linear assembly line working mode. Before the ear welding, defective battery cells are detected and excluded. In the subsequent welding process of the qualified battery cells, it is difficult to coordinate the positions of the ears and the welding structure, which easily leads to the failure of ear welding. In addition, the linear assembly line working mode has low space utilization rate and poor flexibility.

[0003] Therefore, a technical solution is needed to solve the above technical problems. Summary of the Invention

[0004] The purpose of the embodiments of this application is to provide an ear welding device to solve the technical problems in the prior art that the linear assembly line working mode has low space utilization rate, poor flexibility, and it is difficult to coordinate the positions of the ears and the welding structure, which easily leads to the failure of ear welding.

[0005] To achieve the above purpose, the technical solution adopted in this application is: to provide an ear welding device, including a disk dividing mechanism, including a disk and a base, the disk is rotatably connected to the base, the base is provided with a number of workstations, and the number of workstations are spaced on the circumference of the disk; a jig mechanism, the number of jig mechanisms are installed on the disk and are arranged corresponding to the number of workstations, the jig mechanism is used to accommodate the ears to be welded and the battery cells to be welded; a number of jig opening mechanisms, arranged corresponding to some of the jig mechanisms, used to open the jig mechanism; a ear seeking mechanism, an adjustment mechanism, and a welding mechanism are arranged in sequence at the number of workstations, the ear seeking mechanism is used to adjust the position of the battery cell to be welded, the adjustment mechanism is used to adjust the position and shape of the ear to be welded, and the welding mechanism is used to weld the ears to be welded together; a positioning mechanism, the positioning mechanism and the ear seeking mechanism are respectively located on both sides of the jig mechanism corresponding to the ear seeking mechanism and are both installed on the base.

[0006] Optionally, the ear welding device further includes a detection mechanism, the detection mechanism is installed on the base and is arranged between the adjustment mechanism and the welding mechanism, and the detection mechanism is used to detect the position of the ear to be welded.

[0007] Optionally, the detection mechanism is provided with a detection fiber optic sensor, and the detection fiber is arranged along the displacement path of the ear to be welded.

[0008] Optionally, the tab welding device further includes a signal receiving mechanism, which is installed on the base and arranged between the tab searching mechanism and the adjustment mechanism, and is used for receiving the signal emitted by the detection mechanism.

[0009] Optionally, the tab welding device further includes a transfer mechanism, which is used for moving the welded battery cell out of the tab welding device; the plurality of stations further include a starting station, which is located between the tab searching mechanism and the transfer mechanism; the plurality of stations further include an idle station, which is located between the welding mechanism and the transfer mechanism.

[0010] Optionally, the positioning mechanism is arranged in the middle of the disc, and the positioning mechanism includes a positioning component and a positioning cylinder. The positioning component is connected to the positioning cylinder and is arranged at one end of the positioning mechanism close to the fixture mechanism.

[0011] Optionally, the tab searching mechanism is provided with a tab searching cylinder, a stepping motor, a calibration wheel, and tab searching opposed fibers. The stepping motor is power-connected to the calibration wheel, and the stepping motor is used for driving the calibration wheel to drive the battery cell to rotate; the tab searching opposed fibers include a first opposed fiber and a second opposed fiber, and are respectively aligned with the calibration wheel and the battery cell to be welded; the tab searching cylinder is used for driving the calibration wheel to generate displacement.

[0012] Optionally, the adjustment mechanism includes an adjustment cylinder and a shaping component. The adjustment cylinder is connected to the shaping component and drives the shaping component to generate displacement.

[0013] Optionally, the fixture mechanism includes a fixture centering clamp, a tension spring, and an opening block. The tension spring is connected to the fixture centering clamp, and the displacement of the opening block can drive the fixture centering clamp to open. The fixture centering clamp is tightened by the pulling force of the tension spring to hold the battery cell to be welded; the opening fixture mechanism is arranged at the starting station, the transfer mechanism, and the tab searching mechanism. The opening fixture mechanism includes an opening fixture cylinder and an opening fixture ejector rod. The opening fixture cylinder is connected to the opening fixture ejector rod and drives the opening fixture ejector rod to generate displacement. The opening fixture ejector rod is arranged corresponding to the opening block.

[0014] Optionally, the welding mechanism includes a welding cylinder and a welding head. The welding cylinder is connected to and drives the welding head to generate displacement.

[0015] The beneficial effects of the tab welding device provided by the present application are as follows: compared with the prior art, the tab welding device of the present application adopts a disc dividing mechanism, sets several workstations on the circumference of the disc of the disc dividing mechanism, and transports the battery cells and tabs to be welded to each workstation for processing and welding by rotating the disc, thereby improving space utilization and high flexibility; by setting a tab-finding mechanism to adjust the position of the battery cells to be welded, and by setting an adjustment mechanism and a detection mechanism, the tabs to be welded are sequentially straightened, and the position of the tabs to be welded is detected to coordinate the position of the tabs and the welding structure, thereby improving the success rate of welding. This solves the technical problems of the prior art in that the linear assembly line working method has low space utilization, poor flexibility, and difficulty in coordinating the position of the tabs and the welding structure, which easily leads to tab welding failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 A schematic diagram of the structure of the tab welding device provided in this application;

[0018] Figure 2 for Figure 1 Schematic diagram of the structure of the middle disc dividing mechanism;

[0019] Figure 3 for Figure 1 Schematic diagram of the structure of the middle clamp mechanism;

[0020] Figure 4 for Figure 1 Schematic diagram of the structure of the center-opening clamp mechanism;

[0021] Figure 5 for Figure 1 Schematic diagram of the structure of the Zhongxun pole ear mechanism;

[0022] Figure 6 for Figure 1 Structural diagram of the positioning mechanism;

[0023] Figure 7 for Figure 1 Schematic diagram of the structure of the adjustment mechanism;

[0024] Figure 8 for Figure 1 Structural diagram of the welding mechanism;

[0025] Figure 9 for Figure 1Schematic diagram of the structure of the detection mechanism in

[0026] Figure 10 is Figure 1 Schematic diagram of the structure of the signal receiving mechanism in

[0027] Figure 11 is Figure 1 Schematic diagram of the structure of the transfer mechanism in

[0028] Among them, each reference numeral in the figure:

[0029] 10. Disc dividing mechanism; 101. Disc; 102. Divider; 103. Dividing stepping motor;

[0030] 104. Base; 105. Dividing solenoid valve; 20. Fixture mechanism; 201. Fixed seat; 202. Fixed plate; 203. Fixture centering clamp; 204. Calibration roller; 205. Linear bearing; 206. Guide shaft; 207. Retaining plate; 208. Spring fixing bolt; 209. Pull spring; 210. Linear guide rail; 211. Clamp opening block; 212. Stop block; 30. Positioning mechanism; 301. Positioning cylinder; 302. Positioning induction switch; 303. Positioning speed control valve; 304. Positioning component; 40. Clamp opening mechanism; 401. Clamp opening cylinder; 402. Clamp opening induction switch; 403. Clamp opening speed control valve; 404. Clamp opening ejector rod; 405. Floating joint; 406. Linking head; 407. Clamp opening slide rail; 408. Clamp opening slide block; 50. Pole ear seeking mechanism; 501. First pole ear seeking cylinder; 502. First pole ear fixing part; 503. First pole ear speed control valve; 504. Second pole ear speed control valve; 505. Pole ear seeking cylinder seat; 506. Pole ear seeking panel; 507. Pole ear seeking linking block; 508. Pole ear seeking fixed plate; 509. First pole ear slide rail; 510. First pole ear slide block; 511. Second pole ear slide rail; 512. Second pole ear slide block; 513. Pole ear seeking sliding plate; 514. Pole ear seeking pressure wheel seat; 515. Pole ear seeking fixed arm; 516. Pole ear seeking stepping motor; 517. Pole ear seeking protective cover; 518. Pole ear seeking synchronous belt; 519. Pole ear seeking calibration wheel; 520. Second pole ear cylinder; 521. Second pole ear fastener; 522. Third pole ear speed control valve; 523. Fourth pole ear speed control valve; 524. Pole ear seeking floating joint; 525. Pole ear seeking sliding seat; 526. Third pole ear slide block; 527. Third pole ear slide rail; 528. Pole ear seeking optical electric seat; 5291. First pole ear opposed fiber optic; 5292. Second pole ear opposed fiber optic; 60. Adjustment mechanism; 601. First adjustment cylinder; 602. First adjustment speed control valve; 603. First adjustment fastener; 604. Second adjustment speed control valve; 605. First adjustment cylinder seat; 606. First adjustment floating joint; 607. First adjustment pushing block; 608. Adjustment limit block; 609. First adjustment track slide block; 610. First adjustment slide block; 611. Second adjustment cylinder seat; 612. Second adjustment cylinder; 613. Third adjustment speed control valve; 614. Fourth adjustment speed control valve; 615. Adjustment fixed seat; 616. Adjustment shaping block; 617. Adjustment centering clamp; 618. Third adjustment cylinder; 619. Fifth adjustment speed control valve; 620. Second adjustment fastener; 621. Sixth adjustment speed control valve for adjustment; 622. Second adjustment floating joint; 623. Second pushing block; 624. Second adjustment slide block; 625. Second adjustment track slide block; 626. Adjustment linear guide rail; 627. Adjustment support plate; 70. Detection mechanism; 701. Detection fiber optic sensor; 80. Signal receiving mechanism; 801. Track piece; 802. Card seat; 803. Amplifier;90. Welding mechanism; 901. First welding cylinder; 902. First welding speed control valve; 903. First welding cylinder connecting seat; 904. Lower welding head bottom plate; 905. Bottom film fixing seat; 906. Lower welding head; 907. Welding limit stop; 908. Welding limit seat; 909. First welding slider group; 910. First welding slide rail; 911. Second welding slide rail; 912. Upper welding head; 913. Upper welding head bottom plate; 914. Second welding slider group; 915. Welding connecting seat; 916. Second welding speed control valve; 917. Second welding cylinder; 918. Welding upper bottom plate; 919. Welding support plate; 920. Welding reinforcement plate; 921. Welding adjustment block; 922. Welding lower bottom plate; 100. Transfer mechanism; 10001. First transfer speed control valve; 10002. First transfer induction switch; 10003. First transfer cylinder; 10004. Transfer mounting seat; 10005. Second transfer induction switch; 10006. Second transfer speed control valve; 10007. First transfer connecting block; 10008. First transfer slide rail; 10009. First transfer slider; 10010. Transfer limit block; 10011. Transfer optical seat; 10012. Third transfer speed control valve; 10013. Transfer cylinder seat; 10014. Second transfer cylinder; 10015. Fourth transfer speed control valve; 10016. Second transfer connecting seat; 10017. Second transfer limit block group 10017; 10018. Second transfer slide rail; 10019. Second transfer slider; 10020. First transfer fixing seat; 10021. Third transfer cylinder; 10022. Transfer optical fiber; 10023. Transfer jaw group; 10024. Fifth transfer speed control valve; 10025. Sixth transfer speed control valve; 10026. Second transfer fixing seat.; Specific embodiments

[0031] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0032] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0033] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, "a plurality of" means two or more unless otherwise specifically defined.

[0034] It should also be noted that in the embodiments of this application, the same reference numeral is used to represent the same component or the same part. For the same parts in the embodiments of this application, only one of the parts or components may be marked with a reference numeral in the figure. It should be understood that the reference numeral also applies to other identical parts or components.

[0035] In the existing tab welding technology, a linear assembly line working mode is usually adopted. However, the linear assembly line working mode has low space utilization rate and poor flexibility; moreover, it is difficult to coordinate the positions of the tabs and the welding structure, which easily leads to the failure of tab welding. In the technical solution provided by this application, by setting a disk dividing mechanism and adopting a rotation processing method, the space utilization rate is increased and the flexibility is improved; and by setting a tab searching mechanism to adjust the position of the battery cell to be welded, and by setting an adjusting mechanism and a detecting mechanism to straighten and detect the tab to be welded in sequence, the position of the tab to be welded and the welding structure is coordinated to solve the technical problems existing in the prior art.

[0036] Please refer to the accompanying drawings of the specification to describe the tab welding device provided by the embodiments of this application. A tab welding device is used for welding tabs to be welded, as Figure 1 shown, the tab welding device includes:

[0037] A disk dividing mechanism 10, including a disk 101 and a base 104. The disk 101 is rotatably connected to the base 104, and the disk 101 can rotate relative to the base. The base 104 is provided with a plurality of stations, and the plurality of stations are spaced on the circumference of the disk 101. The disk 101 can rotate to transfer the battery cell and tabs on the disk 101 to each station for processing, so as to improve the space utilization rate and flexibility.

[0038] A jig mechanism 20, a plurality of jig mechanisms 20 are installed on the disk 101 and are arranged corresponding to the plurality of stations. The jig mechanism 20 is used to accommodate the tabs to be welded and the battery cell to be welded. The jig mechanism 20 is arranged on the disk 101 to fix the battery cell to be welded and the tabs, and ensure that when the disk 101 drives the jig mechanism 20 and the battery cell to be welded and the tabs to rotate, the battery cell to be welded and the tabs can just be located at the positions corresponding to each station, so as to facilitate other mechanisms to process and manufacture the battery cell to be welded and the tabs.

[0039] A plurality of clamp opening mechanisms 40 are provided corresponding to some of the clamp mechanisms 20 and are used to open the clamp mechanisms 20. The clamp opening mechanisms 40 open the clamp mechanisms 20 to facilitate the placement, removal or adjustment of the battery cells and the tabs to be welded.

[0040] The tab-finding mechanism 50, the adjustment mechanism 60, and the welding mechanism 90 are sequentially arranged at several workstations. The tab-finding mechanism 50 is used to adjust the position of the battery cell to be welded, the adjustment mechanism 60 is used to adjust the position and shape of the tab to be welded, and the welding mechanism 90 is used to weld the battery cell to be welded. That is, they are sequentially arranged at the tab-finding station, the adjustment station, and the welding station. The tab-finding mechanism 50 is used to adjust the position of the battery cell to be welded so that the tab to be welded is located at the end face of the cross-sectional circle of the battery cell side; the adjustment mechanism 60 further adjusts the position of the tab and straightens the tab to be welded, coordinating the position of the battery cell to be welded with the welding structure to improve the success rate of the tab welding; then the welding mechanism 90 welds the tab to be welded.

[0041] The positioning mechanism 30 and the pole-finding lug mechanism 50 are respectively located on both sides of the clamp mechanism 20 corresponding to the pole-finding lug mechanism 50 and are both mounted on the base 104. The positioning mechanism 30 and the pole-finding lug mechanism 50 work together to adjust the position of the battery cell to be welded.

[0042] The above-mentioned tab welding device adopts a disc dividing mechanism 10, and sets several workstations on the side of the disc 101 of the disc dividing mechanism 10. The disc 101 rotates to transport the battery cells and tabs to be welded to each workstation for processing and welding, thereby improving space utilization and high flexibility. By setting a tab-finding mechanism 50 to adjust the position of the battery cells to be welded, and by setting an adjustment mechanism 60 and a detection mechanism 70, the tabs to be welded are sequentially straightened and the position of the tabs to be welded is detected to coordinate the position of the tabs and the welding structure, thereby improving the success rate of welding. This solves the technical problems of low space utilization and poor flexibility of the linear assembly line working method in the prior art, and the difficulty in coordinating the position of the tabs and the welding structure, which easily leads to tab welding failure.

[0043] The structures of the disc dividing mechanism 10 , the clamping mechanism 20 , the clamping opening mechanism 40 , the pole ear finding mechanism 50 , the adjusting mechanism 60 , the welding mechanism 90 , and the positioning mechanism 30 in this embodiment are further described in detail.

[0044] like Figure 2As shown in the figure, the disk dividing mechanism 10 further includes a divider 102 and a dividing stepping motor 103. The divider 102 is disposed between the disk 101 and the base 104 and is used for high-speed intermittent division when the disk 101 rotates; the dividing stepping motor 103 is disposed on the side of the base 104 away from the disk 101 and is drivingly connected to the disk 101 to provide power for the rotation of the disk 101. The disk dividing mechanism 10 further includes a dividing solenoid valve 105 and a dividing speed regulating valve 106. The dividing solenoid valve 105 and the dividing speed regulating valve 106 are both installed on the base 104 and are used to control and adjust the components in the welding mechanism 90.

[0045] As Figure 1 and Figure 3 As shown in the figure, the fixture mechanism 20 includes a plurality of fixture centering clamps 203, a tension spring 209, and an open clamp block 211. The tension spring 209 connects the plurality of fixture centering clamps 203. The displacement of the open clamp block 211 can drive the plurality of fixture centering clamps 203 to open. The plurality of fixture centering clamps 203 are tightened by the pulling force of the tension spring 209 to accommodate the battery cell to be welded.

[0046] Specifically, the fixture mechanism 20 further includes a fixed seat 201, two fixing plates 202, a retaining piece 207, a linear bearing 205, a guide shaft 206, a tension spring fixing bolt 208, a linear guide rail 210, a stop block 212, and a calibration roller 204; the stop block 212 is connected to the open clamp block 211. The open clamp block 211 is provided with oblong holes on both sides and is disposed on the linear guide rail 210. The two oblong holes are not parallel to each other and are in a shape of an eight-character. Round wheels are respectively provided in the two oblong holes and are respectively connected to the two fixing plates 202; the linear bearing 205 is assembled in cooperation with the guide shaft 206. The two ends of the tension spring 209 are connected to the tension spring fixing bolts 208 on the fixing plates 202. The two fixing plates 202 are connected by the guide shaft 206 and the tension spring 209. The two fixing plates 202 can move away from or close to each other through the guide shaft 206 and the tension spring 209. The two fixing plates 202 are respectively provided with fixture centering clamps 203. The retaining piece 207 is disposed between the two fixing plates 202 and the fixture centering clamps 203 and is located at one end away from the center of the disk 101. The fixing plates 202 are installed on the base 104 through the fixed seat 201. The calibration roller 204 is located in the space formed by the fixed seat 201 and the fixing plates 202. Due to the pushing effect, the stop block 212 moves linearly along the slide rail together with the open clamp block 211. The round wheels move in the oblong holes of the open clamp block 211. Due to the limiting effect of the eight-character oblong holes, the round wheels drive the fixing plates 202 to move away from each other along the guide shaft 206, and the tension spring 209 stretches to store potential energy, and the fixture centering clamps 203 open to place the battery cell. After the placement is completed, the tension spring 209 releases the potential energy, the fixing plates 202 move towards each other along the guide shaft 206, and the fixture centering clamps 203 clamp the battery cell.

[0047] The open fixture mechanisms 40 are respectively arranged at the starting station, the pole ear searching mechanism 50, and the transfer mechanism 100. AsFigure 4 As shown, the clamp opening mechanism 40 includes a clamp opening cylinder 401 and a clamp opening push rod 404. The clamp opening cylinder 401 is connected to the clamp opening push rod 404 and drives the clamp opening push rod 404 to move. The clamp opening push rod 404 is arranged corresponding to the clamp opening block 211. The clamp opening push rod 404 moves against and moves together with the clamp opening block 211. The displacement of the clamp opening block 211 can drive the multiple clamp straightening clamps 203 to open to allow the battery cells to be welded to be placed.

[0048] Specifically, the clamp opening mechanism 40 also includes a floating joint 405, a link joint 406, a clamp opening slide rail 407, a clamp opening induction switch 402, and a clamp opening speed control valve 403; the clamp opening cylinder 401 is provided with a clamp opening speed control valve 403 and one end is connected to the floating joint 405, the floating joint 405 is connected to the vertical part of the link joint 406, the clamp opening slider 408 is provided with the horizontal part of the link joint 406 on one side, and the clamp opening push rod 404 is provided on the other side, the clamp opening slide rail 407 is provided below the clamp opening slider 408, and the clamp opening slider 408 can move along the clamp opening slide rail 407; the clamp opening push rod 404 can push against the stop block 212 in the clamp mechanism 20, and is used to move the stop block 212 and thus open the clamp mechanism 40. The clamp opening sensing switch 402 is used to detect the extended positions of the clamp opening cylinder 401 and the floating joint 405 to determine whether the clamp opening cylinder 401 is actuated, thereby controlling the extension or return of the floating joint 405.

[0049] like Figure 5 As shown, the pole-seeking ear mechanism 50 includes a number of pole-seeking ear cylinders, a pole-seeking ear stepper motor 516, a pole-seeking ear correction wheel 519, a first pole-seeking ear corresponding optical fiber 5291, and a second pole-seeking ear corresponding optical fiber 5292. The pole-seeking ear cylinder drives the pole-seeking ear correction wheel 519 to move to the battery cell to be welded; the pole-seeking ear stepper motor 516 and the pole-seeking ear correction wheel 519 are power-connected, and the pole-seeking ear stepper motor 516 drives the pole-seeking ear correction wheel 519 to rotate, thereby driving the battery cell to be welded to rotate until the pole ear to be welded is at the end face of the cross-sectional circle of the side of the battery cell; the first pole-seeking ear corresponding optical fiber 5291 and the second pole-seeking ear corresponding optical fiber 5292 are respectively aligned with the pole-seeking ear correction wheel 519 and the battery cell to be welded, for detecting whether the battery cell to be welded is in the ideal position, and whether the pole-seeking ear correction wheel 519 returns to its position after adjusting the battery cell position. As another embodiment, the seeker lug mechanism 50 may further include a plurality of seeker lug speed regulating valves for further accurately regulating the seeker lug correction wheel 519 to reach the position of the battery cell to be welded.

[0050] Specifically, the pin-seeking ear cylinder includes a first pin-seeking ear cylinder 501 and a second pin-seeking ear cylinder 520 ; the pin-seeking ear speed regulating valve includes a first pin-seeking ear speed regulating valve 503 , a second pin-seeking ear speed regulating valve 504 , a third pin-seeking ear speed regulating valve 522 , and a fourth pin-seeking ear speed regulating valve 523 .

[0051] The pole finding ear mechanism 50 further includes a first pole finding ear firmware 502, a pole finding ear cylinder seat 505, a pole finding ear panel 506, a pole finding ear link block 507, a pole finding ear fixing plate 508, a first pole finding ear slide rail 509, a first pole finding ear slide block 510, a second pole finding ear slide rail 511, a second pole finding ear slide block 512, a pole finding ear sliding plate 513, a pole finding ear pressure wheel seat 514, a pole finding ear fixing arm 515, a pole finding ear cover 517, a pole finding ear synchronous belt 518, a second pole finding ear fastener 521, a pole finding ear floating joint 524, a pole finding ear sliding seat 525, a third pole finding ear slide block 526, a third pole finding ear slide rail 527, and a pole finding ear optoelectronic seat 528.

[0052] The pole finding ear fixing plate 508 is installed on the base 104. One side of the pole finding ear fixing plate 508 is connected to a first pole finding ear cylinder 501 through the pole finding ear cylinder seat 505. A first pole finding ear speed regulating valve 503 and a second pole finding ear speed regulating valve 504 are respectively installed at both ends of the first pole finding ear cylinder 501. The firmware is installed in the middle of the first pole finding ear cylinder 501. One end of the first pole finding ear cylinder 501 is connected to the pole finding ear panel 506. The pole finding ear panel 506 is connected to the pole finding ear link 409. The pole finding ear link 409 passes through the pole finding ear fixing plate 508 through a long hole and is connected to the pole finding ear sliding plate 513. First pole finding ear slide blocks 510, a first pole finding ear slide rail 509, second pole finding ear slide blocks 512, and a second pole finding ear slide rail 511 are respectively arranged below both sides of the pole finding ear sliding plate 513. The pole finding ear sliding plate 513 is connected to the pressure wheel plate. A pole finding ear stepping motor 516 is arranged above the pressure wheel plate. One side of the pole finding ear synchronous belt 518 is connected to the pole finding ear stepping motor 516, and the other side is connected to the pole finding ear calibration wheel 519. One side of the pole finding ear pressure wheel plate is connected to the pole finding ear calibration wheel 519 through the pole finding ear fixing arm 515. A third pole finding ear slide rail 527 is arranged on the pole finding ear fixing plate 508 below the pole finding ear sliding plate 513. A third pole finding ear slide block 526 is arranged above the third pole finding ear slide rail 527. The third pole finding ear slide block 526 is connected to the pole finding ear sliding seat 525 above. One side of the pole finding ear sliding seat 525 is connected to the pole finding ear floating joint 524. The pole finding ear floating joint 524 is connected to the second pole finding ear cylinder 520. Third pole finding ears 522 and a fourth pole finding ear speed regulating valve 523 are installed at both ends of the second pole finding ear cylinder 520. A pole finding ear optoelectronic seat 528 is installed on the upper part of the pole finding ear sliding seat 525. First pole finding ear opposed fibers 5291 and second pole finding ear opposed fibers 5292 are arranged at the upper and lower ends of the pole finding ear optoelectronic seat 528.

[0053] When the clamp mechanism 20 moves to the pole-seeking ear station, the opening clamp mechanism 40 acts to open and close the clamp mechanism 20, and the positioning cylinder mechanism 30 drives the positioning block 306 to extend against one side of the battery cell to be welded, and the other side of the battery cell to be welded contacts the baffle 207; the first pole-seeking ear cylinder 501 in the rear pole-seeking ear mechanism 50 is driven, and the pole-seeking ear sliding plate 513 moves along the first pole-seeking ear slide rail 509 and the second pole-seeking ear slide rail 511, and the pole-seeking ear correction wheel 519 moves downward, and the pole-seeking ear stepping motor 516 drives the pole-seeking ear stepping motor 516 through the synchronous pole-seeking ear. The ear belt 518 drives the pole-finding ear correction wheel 519 to rotate, and then drives the battery cell to be welded to rotate until the two pole ears to be welded are at the highest point of the cross-sectional circle of the side of the battery cell to be welded; the second pole-finding ear cylinder 520 drives, and the pole-finding ear sliding plate 513 moves along the third pole-finding ear slide rail 527. The second pole-finding ear corresponding optical fiber 5292 is used to detect whether the battery cell to be welded is in the ideal position, and the first pole-finding ear corresponding optical fiber 5291 is used to detect whether the pole-finding ear correction wheel 519 moves upward after the position of the battery cell to be welded is adjusted.

[0054] The positioning mechanism 30 is located in the middle of the disc 101. Figure 6 As shown, the positioning mechanism 30 includes a positioning component 304 and a positioning cylinder 301. The positioning component 304 is connected to the positioning cylinder 301 and is disposed at one end of the positioning mechanism 30 close to the clamping mechanism 20. Figure 1 As shown, when the battery cell to be welded is transferred to the electrode-finding station, the positioning cylinder 301 drives the positioning component 304 to extend, and the positioning component 304 abuts against the battery cell, and cooperates with the baffle 207 of the electrode-finding mechanism 50 to jointly limit and fix the position of the battery cell to prevent the battery cell from falling out. After the electrode-finding mechanism 50 adjusts the position of the battery cell to be welded, the positioning cylinder 301 drives the positioning component 304 to return to its original position. As other embodiments, the positioning mechanism 30 may further include a positioning speed regulating valve 303 and a positioning sensing switch 302 for further precise control of the positioning component 304. The positioning sensing switch 302 is used to detect whether the positioning component 304 has returned to its original position, so as to control the positioning component 304 to retract back to its original position.

[0055] like Figure 7 As shown, the adjustment mechanism 60 includes an adjustment cylinder and a shaping component. The adjustment cylinder is connected to the shaping component and drives the shaping component to produce a displacement to reach above the electrode tab to be welded, thereby adjusting the position and shape of the electrode tab to be welded. Specifically, as another embodiment, the adjustment mechanism 60 also includes a plurality of adjustment speed regulating valves and an adjustment track slider. The adjustment component includes a shaping block 616 and an adjustment straightening clamp 617. The adjustment cylinder drives the adjustment shaping block 616 and the adjustment straightening clamp 617. The adjustment shaping block 616 and the adjustment straightening clamp 617 enclose a receiving space. During adjustment, the electrode tab to be welded is placed in the receiving space, the adjustment track slider approaches the electrode tab to be welded, and is adjusted to above the electrode tab to be welded, and then the position and shape of the electrode tab to be welded are adjusted.

[0056] Specifically, the adjustment cylinder includes a first adjustment cylinder 601, a second adjustment cylinder 612, and a third adjustment cylinder 618; the adjustment speed control valve includes a first adjustment speed control valve 602, a second adjustment speed control valve 604, a third adjustment speed control valve 613, a fourth adjustment speed control valve 614, a fifth adjustment speed control valve 619, and an adjustment sixth speed control valve 621; the track slider includes a first adjustment track slider 609 and a second adjustment track slider 625.

[0057] The adjustment mechanism 60 further includes a first adjustment fastener 603, a first adjustment cylinder seat 605, a first adjustment floating joint 606, a first adjustment push block 607, an adjustment limit block 608, a first adjustment slider 610, a second adjustment cylinder seat 611, an adjustment fixing seat 615, a second adjustment fastener 620, a second adjustment floating joint 622, a second adjustment push block 623, a second adjustment slider 624, an adjustment linear guide rail 626, and an adjustment support plate 627.

[0058] The adjustment support plate 627 in the adjustment mechanism 60 is fixed to the bottom plate 104 of the disc dividing mechanism 10. The adjustment support plate 627 is provided with an adjustment linear guide 626 on the side close to the clamp disc 101. The adjustment linear guide 626 has a first adjustment track slider 609 at the bottom and a second adjustment track slider 625 at the top at both ends. The first adjustment track slider 609 at the bottom is installed with the first adjustment slider 610. The vertical part of the first adjustment cylinder seat 605 is connected to the bottom of one side of the first adjustment slider 610. An adjustment shaping block 616 is provided above the same side of the first adjustment slider 610. The second adjustment cylinder seat 605 is installed with a second adjustment cylinder 612 on the horizontal part. The second adjustment cylinder 612 is provided with a third adjustment speed regulating valve 613 and a fourth adjustment speed regulating valve 614 on the side. Two adjustment fixing seats 615 are provided in the installation groove of the second adjustment cylinder 612. The adjustment fixing seats 615 are provided with a plurality of adjustment fixing seats. An adjustment straightening clamp 617 is installed at the end, and the side of the first adjustment slider 610 is connected to the first push block 607. An adjustment limit block 608 is provided on the adjustment support plate 627 above the first push block 607. The first push block 607 is connected to the adjustment floating joint 622, and then connected to the first adjustment cylinder 601. The first adjustment cylinder 601 is fixed on the adjustment support plate 627 through the first adjustment cylinder seat 605. The first adjustment cylinder 601 and the second adjustment cylinder 612 are provided on both sides of the first adjustment cylinder 601, and the first adjustment fastener 603 is provided in the middle. A second adjustment slider 624 is installed on the upper second adjustment track slider 625. The second adjustment slider 624 has an adjustment fixing seat 615 with an adjustment shaping block 616 on one side, and is connected to a second push block 623 on the same side. The second push block 623 is connected to the second adjustment floating joint 622, and then connected to the third adjustment cylinder 618. The fifth adjustment speed control valve 619 and the sixth adjustment speed control valve 621 are installed on both sides of the third adjustment cylinder 618, and there is a second adjustment fastener 620 in the middle.

[0059] When the fixture mechanism 20 reaches the adjustment station, the first adjustment cylinder 601 drives the first adjustment slider 610 to move upward along the linear slide rail to a predetermined position, i.e., below the to-be-welded tab; the second adjustment cylinder 612 drives the adjustment fixing seat 615 and the adjustment centering clamp 617, and the two to-be-welded tabs are located in the space formed by the adjustment shaping block 616 and the adjustment centering clamp 617; the third adjustment cylinder 618 drives the second adjustment track slider 625 to move downward to a predetermined position, i.e., above the tab, to adjust the position and shape of the to-be-welded tab; then the adjustment shaping block 616 moves upward or downward to return to its original position.

[0060] As Figure 8 shown, the welding mechanism 90 includes a plurality of welding cylinders and a plurality of welding heads. The welding cylinders drive the plurality of welding heads to move to the to-be-welded tab and weld the two to-be-welded tabs together, and then the plurality of welding heads return to their original positions. As other embodiments, the welding mechanism 90 further includes a plurality of welding speed control valves for further precisely controlling the position of the welding heads reaching the to-be-welded tab.

[0061] Specifically, the welding cylinders include a first welding cylinder 901 and a second welding cylinder 917; the welding speed control valves include a first welding speed control valve 902 and a second welding speed control valve 916; the welding heads include an upper welding head 912 and a lower welding head 906.

[0062] The welding mechanism 90 further includes a first welding cylinder connecting seat 903, a lower welding head bottom plate 904, a bottom film fixing seat 905, a welding limit stop 907, a welding limit seat 908, a first welding slider group 909, a first welding slide rail 910, a second welding slide rail 911, an upper welding head bottom plate 913, a second welding slider group 914, a second welding cylinder 917, a welding connecting seat 915, a welding upper bottom plate 918, a welding support plate 919, a welding reinforcement plate 920, a welding adjustment block 921, and a welding lower bottom plate 922. The first welding cylinder 901 and the second welding cylinder 917 respectively drive the first welding slider group 909 and the second welding slider group 914 to move upward and downward along the first welding slide rail 910 and the second welding slide rail 911 respectively, and the upper welding head 912 and the lower welding head 906 weld the pole piece together.

[0063] The lower welding bottom plate 922 is installed on the base plate of the disc dividing mechanism 10, and the welding adjustment block 921 cooperates with the bolt to adjust the position of the welding mechanism 90. The first welding cylinder 901 is installed at one end above the welding bottom plate 922, and the welding support plate 919 is installed vertically to the welding lower bottom plate 922. The welding reinforcement plate 920 is installed on both sides of one side of the welding support plate 919. The first welding speed regulating valve 902 is installed on the side of the first welding cylinder 901, and the first welding cylinder connecting seat 903, the lower welding head bottom plate 904, the welding bottom membrane fixing seat 905, and the lower welding head 906 are connected in sequence above; the other side of the welding support plate 919 on which the welding reinforcement plate 920 is installed is provided with a first welding slide rail 910, a second welding slide rail 910, a second welding slide rail 911, and a second welding slide rail 912. The welding slide rail 911, the first welding slide rail 910, and the other side of the second welding slide rail 911 are correspondingly provided with the first welding slider group 909 and the second welding slider group 914. The first welding slider group 909 and the second welding slider group 914 are respectively installed with the lower welding base plate and the upper welding base plate. The welding limit block 907 is installed below the lower welding base plate, and the welding limit block 907 is provided with a welding limit seat 908; the upper welding base plate is installed with an upper welding head 912, and the upper part is connected to the second welding cylinder 917 and the welding connection seat 915, and then connected to the second welding cylinder 917. The second welding cylinder 917 is provided with a second welding speed regulating valve group 916, and the second welding cylinder 917 is installed on the welding upper base plate 918.

[0064] When the clamping mechanism 20 moves to the welding station, the first welding cylinder 901 is driven, and the first welding slider group 909 moves upward along the first welding slide rail 910 and the second welding slide rail 911, and the lower welding head 906 moves to the bottom of the electrode ear to be welded; the second welding cylinder 917 drives the second welding slider group 914 to move along the first welding slide rail 910 and the first welding slide rail 910 moves downward, and the upper welding head 912 moves accordingly and welds the two electrode ears to be welded together with the lower welding head 906; then the upper welding head 912 moves upward; the lower welding head 906 moves downward.

[0065] Furthermore, the tab welding device further includes a detection mechanism 70 and a signal receiving mechanism 80 .

[0066] The detection mechanism 70 is mounted on the base 104 and disposed between the adjustment station and the welding station. The detection mechanism 70 is used to detect whether the tab to be welded is in the ideal position. The detection mechanism 70 is located after the adjustment station and performs further inspection on the tab to be welded after it is straightened. Only after confirming that the tab to be welded is in the correct position can the tab to be welded be welded at the welding station, further improving the success rate of the tab welding.

[0067] like Figure 9As shown, the detection mechanism 70 is provided with a detection fiber optic sensor 701. The fiber optic sensor 701 is arranged along the displacement path of the to-be-welded tab to detect whether the to-be-welded tab is in the correct position before welding. When the detection result is normal, it enters the next station for welding.

[0068] The signal receiving mechanism 80 is installed on the base 104 and is arranged between the positioning station and the adjustment station to receive the signals emitted by the tab searching mechanism 50 and the detection mechanism 70. The signal receiving mechanism 80 receives the signals emitted by the tab searching mechanism 50 and the detection mechanism 70 to assist in adjusting the position of the battery cell and the position and state of the tab.

[0069] As Figure 10 shown, the signal receiving mechanism 80 is provided with a track piece 801, a card seat 802, and an amplifier 803. The track piece 801 is fixed to the amplifier 803 through the card seat 802; it is installed on the base 104 and is arranged between the positioning station and the adjustment station to receive the signals emitted by the tab searching mechanism 50 and the detection mechanism 70, such as fiber optic signals, to provide a judgment basis for adjustment, and is transferred to the next station in time after the adjustment is completed.

[0070] As Figure 1 shown, the tab combined welding device further includes a transfer mechanism 100, which is arranged at the transfer station. The base 104 is further provided with a starting station, and the starting station is between the tab searching station and the transfer station, and is used to initially place the to-be-welded tab and the to-be-welded battery cell into the tab combined welding device. The starting station is also correspondingly provided with a fixture mechanism 20 for accommodating the to-be-welded tab and the to-be-welded battery cell. The base 104 is further provided with an idle station, and the idle station is between the welding station and the transfer station, playing a buffering role. The battery cell and the tab after welding can be left to cool at the idle station for a period of time and then transferred to the transfer station.

[0071] As Figure 11 shown, the transfer mechanism 100 includes a number of transfer cylinders and a transfer jaw group 10023, a transfer cylinder, and a transfer speed regulating valve. The transfer cylinder drives the jaws to move to the battery cell after welding, and is speed-regulated through the transfer speed regulating valve. The fixture alignment clamp 203 of the fixture mechanism 20 is opened, and the jaw group 10023 grabs the battery cell after welding and transfers it out of the tab combined welding device.

[0072] Specifically, the transfer cylinder includes a first transfer cylinder 10003, a second transfer cylinder 10014, and a third transfer cylinder 10021; the transfer speed regulating valve includes a first transfer speed regulating valve 10001, a second transfer speed regulating valve 10006, a third transfer speed regulating valve 10012, a fourth transfer speed regulating valve 10015, a fifth transfer speed regulating valve 10024, and a sixth transfer speed regulating valve 10025. The first transfer cylinder 10003 and the second transfer cylinder drive the up-and-down, left-and-right movement, and the third transfer cylinder 10021 drives the gripper to grasp the battery cell, which is used to grasp the battery cell and move it out of the tab welding device. The transfer cylinder seat 10013 and the second transfer cylinder seat 10014 are used to fix the transfer cylinder.

[0073] The transfer mechanism 100 further includes a first transfer induction switch 10002, a transfer mounting seat 10004, a second transfer induction switch 10005, a first transfer connecting block 10007, a first transfer slide rail 10008, a first transfer slider 10009, a transfer limit block 10010, a transfer photoelectric seat 10011, two upper and lower cylinder seats 10013, a second transfer connecting seat 10016, a second transfer limit block group 10017, a second transfer slide rail 10018, a second transfer slider 10019, a first transfer fixing seat 10020, a transfer optical fiber 10022, a transfer gripper group 10023, and a second transfer fixing seat 10026.

[0074] In the transfer mechanism 100, the moving first transfer fixing base 10020 is installed in the bottom plate. The upper end of the moving first transfer fixing base 10020 is provided with a transfer mounting seat 10004. One side edge of the transfer mounting seat 10004 is provided with a transfer limiting block 10010, and a fixing piece is provided at the corresponding middle position. The first transfer slide rail 10008 is installed thereon, and a first transfer slider 10009 is on the first transfer slide rail 10008. On the other side of the transfer mounting seat 10004, there is a first transfer cylinder 10003, and the first transfer speed regulating valve 10001 and the second transfer speed regulating valve 10006 are installed at both ends. Inductive switches, namely the first transfer inductive switch 10002 and the second transfer inductive switch 10005, are provided on the first transfer cylinder 10003 beside the first transfer speed regulating valve 10001 and the second transfer speed regulating valve 10006. One side of the first transfer slider 10009 is connected to one side of the fixing piece, and a second transfer slide rail 10018 is installed on the other side of the fixing piece. A second transfer slider 10019 is installed on the second transfer slide rail 10018, and second transfer limiting seat groups 10017 are provided at both ends. The second transfer slider 10019 is connected to one end of the first transfer fixing base 10020. The other end of the first transfer fixing base 10020 is connected to a third transfer cylinder 10021. An opposed fiber optic is provided on the upper part of the third transfer cylinder 10021 for monitoring whether the transfer gripper group 10023 acts. A transfer gripper group 10023 is provided on the lower part of the third transfer cylinder 10021 for gripping the battery cell. A fifth transfer speed regulating valve 10024 and a sixth transfer speed regulating valve 10025 are provided on one side of the third transfer cylinder 10021. The first transfer fixing base 10020 is connected to the second transfer connecting seat 10016 on the horizontal back surface. The other end of the second transfer connecting seat 10016 is connected to the hollow block. The second transfer cylinder 10014 passes through the hollow block, and the hollow block can move along the second transfer cylinder 10014. The third transfer speed regulating valve 10012 and the fourth transfer speed regulating valve 10015 are provided at both ends of the second transfer cylinder 10014. The second transfer cylinder 10014 is installed on the fixing piece through the first transfer fixing bases 10020 on both sides.

[0075] When the ear clamp group reaches the transfer station, the opening and closing fixture mechanism 40 acts on the opening and closing fixture mechanism 20. Driven by the first transfer cylinder 10003, the first transfer slider 10009 moves rightward along the first transfer slide rail 10008; driven by the second transfer cylinder 10014, the second transfer slider 10019 moves downward along the second transfer slide rail 10018, and at the same time the hollow groove moves downward along the second transfer cylinder 10014; driven by the third transfer cylinder 10021, the transfer gripper group 10023 grips the welded battery cell; driven by the second transfer cylinder 10014, the second transfer slider 10019 moves upward along the second transfer slide rail 10018; driven by the first transfer cylinder 10003, the first transfer slider 10009 moves leftward along the first transfer slide rail 10008 to transfer the welded battery cell out of the ear welding device.

[0076] like Figure 1 As shown, the processing process of the tab welding device includes:

[0077] Initial workstation processing: open the clamp mechanism 40, move the clamp push rod 404 to push the block 212 to open the clamp mechanism 40, place the battery cell and tab to be welded into the clamp mechanism 20, open the clamp mechanism 40 and return it to its original position, the clamp mechanism 20 clamps the battery cell and tab to be welded and transfers them to the tab-finding workstation.

[0078] Processing of the pole ear station: open the clamp mechanism 40 to open the clamp mechanism 40, the baffle 207 of the pole ear mechanism 50 cooperates with the positioning component 304 of the positioning mechanism 30 to fix the battery cell to be welded, and the pole ear correction wheel 519 of the pole ear mechanism 50 rotates and drives the battery cell to be welded to move until the pole ear to be welded is located on the side cross-sectional circular end face of the battery cell to be welded, when the pole ear shooting optical fiber 505 detects that the battery cell to be welded has moved to the appropriate position, the pole ear opening clamp mechanism 40 returns to its position, and the clamp mechanism 20 clamps the battery cell and the pole ear to be welded and transfers them to the adjustment station.

[0079] Adjustment station processing: The adjustment mechanism 60 adjusts the position and shape of the electrode ear to be welded by adjusting the straightening clamp 617 and the shaping block 603, and then transfers it to the welding station. During the transfer process, the detection optical fiber of the detection mechanism 70 detects the position of the electrode ear to be welded.

[0080] Welding station processing: Several welding heads of the welding tooling cooperate with each other to weld the two tabs to be welded together, and then transfer them to the idle station.

[0081] Idle station processing: The battery cells after welding are placed at the idle station and then transferred to the transfer station.

[0082] Transfer station processing: open the clamp mechanism 40, move the clamp push rod 404, push the blocking block 212 to open the clamp mechanism 40, transfer and rotate to grab the welded battery cell and move it out of the tab welding device, open the clamp mechanism 40 and return it to its original position, and reset the clamp straightening clamp 203 of the clamp mechanism 20.

[0083] Compared with the prior art, the tab welding device of the present application adopts a disc dividing mechanism 10, and sets several workstations on the side of the disc 101 of the disc dividing mechanism 10. The disc 101 rotates to transport the battery cells and tabs to be welded to each workstation for processing and welding, thereby improving space utilization and high flexibility. The position of the battery cells to be welded is adjusted by setting a tab finding mechanism 50, and the adjustment mechanism 60 and the detection mechanism 70 are set to sequentially straighten the tabs to be welded, detect the position of the tabs to be welded to coordinate the position of the tabs and the welding structure, and improve the success rate of welding. This solves the technical problems of the linear assembly line working mode in the prior art, such as low space utilization, poor flexibility, and difficulty in coordinating the position of the tabs and the welding structure, which easily leads to tab welding failure.

[0084] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A tab welding device, characterized in that: include The disc dividing mechanism comprises a disc and a base, wherein the disc is rotatably connected to the base, and the base is provided with a plurality of workstations, and the plurality of workstations are spaced apart on the circumference of the disc; A plurality of fixture mechanisms, mounted on the disc and arranged corresponding to the plurality of workstations, the fixture mechanisms being used to accommodate the tabs to be welded and the battery cells to be welded; A plurality of clamp opening mechanisms, correspondingly provided with some of the clamp mechanisms, for opening the clamp mechanisms; The tab-finding mechanism, the adjustment mechanism, and the welding mechanism are sequentially arranged at the plurality of workstations. The tab-finding mechanism is used to adjust the position of the battery cell to be welded, the adjustment mechanism is used to adjust the position and shape of the tab to be welded, and the welding mechanism is used to weld the tab to be welded. A positioning mechanism, wherein the positioning mechanism and the pole-finding lug mechanism are respectively located on both sides of the clamp mechanism corresponding to the pole-finding lug mechanism and are both installed on the base; the positioning mechanism and the pole-finding lug mechanism work together to adjust the position of the battery cell to be welded; The pole-seeking ear mechanism is provided with a pole-seeking ear cylinder, a stepper motor, a correction wheel, and a pole-seeking ear-receiving optical fiber. The stepper motor and the correction wheel are power-connected. The stepper motor is used to drive the correction wheel to drive the battery cell to rotate, and then drive the battery cell to be welded to rotate until the pole ear to be welded is on the end face of the cross-sectional circle of the battery cell side; the pole-seeking ear-receiving optical fiber includes a first reflecting optical fiber and a second reflecting optical fiber, and is respectively aligned with the correction wheel and the battery cell to be welded, and is used to detect whether the battery cell to be welded is in an ideal position, and whether the pole-seeking ear correction wheel returns to its position after adjusting the battery cell position; the pole-seeking ear cylinder is used to drive the correction wheel to produce displacement, and the pole-seeking ear mechanism also includes a number of pole-seeking ear speed regulating valves, which are used to regulate the pole-seeking ear correction wheel to reach the position of the battery cell to be welded.

2. The tab welding device according to claim 1, wherein: The tab welding device further includes a detection mechanism, which is mounted on the base and disposed between the adjustment mechanism and the welding mechanism, and is used to detect the position of the tab to be welded.

3. The tab welding device according to claim 2, wherein: The detection mechanism is provided with a detection optical fiber sensor, and the detection optical fiber is arranged along the displacement path of the tab to be welded.

4. The tab welding device according to claim 2 or 3, characterized in that: The tab welding device further includes a signal receiving mechanism, which is mounted on the base and disposed between the tab-finding mechanism and the adjustment mechanism, and is configured to receive a signal emitted by the detection mechanism.

5. The tab welding device according to claim 1, wherein: It also includes a transfer mechanism, which is used to move the welded battery cells out of the tab welding device; The plurality of workstations further includes a starting workstation, which is located between the pole-finding mechanism and the transfer mechanism; The plurality of workstations further include an idle workstation, which is located between the welding mechanism and the transfer mechanism.

6. The tab welding device according to claim 1, wherein: The positioning mechanism is arranged at the middle of the disc, and comprises a positioning component and a positioning cylinder. The positioning component is connected to the positioning cylinder and is arranged at one end of the positioning mechanism close to the clamp mechanism.

7. The tab welding device according to claim 1, wherein: The adjustment mechanism includes an adjustment cylinder and a shaping component. The adjustment cylinder is connected to the shaping component and drives the shaping component to generate displacement.

8. The tab welding device according to claim 1, wherein: The clamp mechanism includes a clamp straightening clamp, a tension spring, and a clamp opening block. The tension spring is connected to the clamp straightening clamp. The clamp opening block is displaced to drive the clamp straightening clamp to open. The clamp straightening clamp is tightened by the tension of the tension spring to accommodate the battery cell to be welded. The clamp opening mechanism is arranged at the starting position, the transfer mechanism, and the pole-finding ear mechanism. The clamp opening mechanism includes a clamp opening cylinder and a clamp opening push rod. The clamp opening cylinder is connected to the clamp opening push rod and drives the clamp opening push rod to produce displacement. The clamp opening push rod is arranged corresponding to the clamp opening block.

9. The tab welding device according to claim 1, wherein: The welding mechanism includes a welding cylinder and a welding head, and the welding cylinder is connected to and drives the welding head to generate displacement.

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