An automated assembly equipment for anti-deformation of current collectors for all-tab cylindrical batteries.

Abstract

This invention discloses an automated assembly device for preventing deformation of a cylindrical battery current collector with all tabs, relating to the field of battery current collector assembly technology. The device includes a top plate and a top disk. A longitudinal adjustment frame is installed inside the top plate, and a transverse adjustment frame is provided at the bottom of the longitudinal adjustment frame. This automated assembly device for preventing deformation of a cylindrical battery current collector with all tabs achieves multi-dimensional precise alignment between the transfer component and the CCD camera through the coordinated design of the longitudinal and transverse adjustment frames and the drive component. Combined with real-time positioning calibration by the CCD camera, it ensures the accuracy of current collector gripping and transfer. The transfer component uses a vacuum suction cup with multi-point uniform adsorption, effectively avoiding warping deformation of the current collector caused by single-point adsorption. The flexible pressing design driven by the hydraulic rod, combined with real-time pressure monitoring by the pressure detection plate, achieves a tight fit between the current collector and the battery cell's all tabs, avoiding localized overpressure or incomplete fit, thus achieving automated assembly to prevent deformation.

Description

Technical Field

[0001] This invention relates to the field of battery current collector assembly technology, specifically to an automated assembly device for anti-deformation of a cylindrical battery current collector with all tabs. Background Technology

[0002] As all-tab cylindrical batteries rapidly develop towards higher power and thinner designs, the current collector, as a core conductive component connecting the cell to the external circuit, directly affects the battery's internal resistance, temperature rise characteristics, and cycle life due to its assembly precision and welding quality. Assembly deviations can easily lead to problems such as poor contact and localized overheating, severely limiting the battery's rate discharge capability and long-term reliability, thus placing higher demands on process control.

[0003] However, current traditional assembly equipment is unable to achieve precise coaxial alignment between the current collector and the battery cell tabs. The pressure cannot be monitored in real time during the pressing process, which can easily lead to local overpressure collapse or poor fit, resulting in assembly deformation. Summary of the Invention

[0004] The purpose of this invention is to provide an automated assembly device for anti-deformation of current collectors for all-tab cylindrical batteries, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automated assembly device for anti-deformation of a cylindrical battery current collector with full tabs, comprising a top plate and a top plate. A longitudinal adjustment frame is installed inside the top plate, and a transverse adjustment frame is provided at the bottom of the longitudinal adjustment frame. An auxiliary frame is installed at the bottom of the transverse adjustment frame, and a CCD camera is provided on one side of the bottom of the auxiliary frame. A transfer assembly for assisting assembly is installed on one side inside the CCD camera, and the transfer assembly includes a vacuum pump, a vacuum tube, a hydraulic rod, a vacuum suction cup, a connecting plate, and a positioning component. A vacuum tube is installed at the input end of the vacuum pump, and a vacuum suction cup is provided at the bottom of the vacuum tube. The middle part of the vacuum suction cup... The device is equipped with a hydraulic rod, and a connecting plate is provided on one outer surface of the vacuum suction cup. A positioning component is rotatably mounted on the bottom of the connecting plate. An adjustment assembly is provided on the outer side of the positioning component. The adjustment assembly includes a drive motor, a drive gear, a placement seat, a transmission gear, and a pressure detection plate. The output end of the drive motor is equipped with a drive gear, and the outer surface of the drive gear is meshed with a transmission gear. A placement seat is installed in the middle of the transmission gear, and the middle of the placement seat is electrically connected to the pressure detection plate through a pressure sensor. The top plate is located at the bottom of the drive gear. Both the longitudinal adjustment frame and the transverse adjustment frame are equipped with drive components for auxiliary movement.

[0006] Furthermore, a chassis is rotatably mounted on the bottom of the top plate, and a forward and reverse motor is mounted on the lower center of the chassis.

[0007] Furthermore, connecting plates are installed on both sides of the bottom of the chassis, and the connecting plates are fixed to the bottom plate by bolts.

[0008] Furthermore, a welding base is provided on one side of the base plate, and a hydraulic cylinder is installed inside the welding base.

[0009] Furthermore, the output end of the hydraulic cylinder is provided with an adapter plate, and a laser welding machine is installed on one side of the adapter plate.

[0010] Furthermore, the drive assembly includes a servo motor, a lead screw, and a slide block, and the output end of the servo motor is equipped with a lead screw, the outer surface of the lead screw is threaded with a lead screw, and the bottom of the lead screw is fixedly connected to the lead screw.

[0011] Furthermore, a connecting frame is installed on one side of the top plate, and the connecting frame is vertically arranged on one side of the bottom plate.

[0012] Furthermore, a conveyor belt is provided on one side of the outer surface of the base plate, and the conveyor belt is located below the transfer assembly.

[0013] Furthermore, the lower adsorption surface of the vacuum suction cup is provided with multiple independent adsorption holes. Furthermore, these multiple adsorption holes are connected to the vacuum tube through a gas distribution structure to achieve multi-point uniform adsorption of the collector plate.

[0014] This invention provides an automated assembly device for anti-deformation of current collectors for full-tab cylindrical batteries, which has the following advantages: 1. This invention achieves multi-dimensional precise alignment between the transfer component and the CCD camera through the coordinated design of the longitudinal adjustment frame, the transverse adjustment frame and the drive component. With the real-time positioning calibration of the CCD camera, the accuracy of the current collector gripping and transfer is ensured. The transfer component adopts a vacuum suction cup with multi-point uniform adsorption, which effectively avoids the warping and deformation of the current collector caused by single-point adsorption. The flexible pressing design driven by the hydraulic rod, combined with the real-time pressure monitoring of the pressure detection plate, achieves a tight fit between the current collector and the full tab of the battery cell, avoiding local overpressure or poor fit, and realizing anti-deformation automated assembly.

[0015] 2. After the pressing and fixing of the present invention is completed, the adjustment component starts the work position switching, the drive motor drives the active gear to rotate, the meshing drives the transmission gear to rotate synchronously, and then drives the placement seat and the battery cell in the middle to rotate. The battery cell and the current collector will be kept in a fixed position while keeping the axis aligned with the positioning component. The bottom of the top plate cooperates with the forward and reverse motor to rotate the entire top plate and the adjustment component, which is convenient for adjusting the current collector to be welded, and convenient for automatically changing to the next set of assembly welding parts after the current current collector has finished welding a battery cell. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the overall structure of an automated assembly equipment for preventing deformation of a multi-tab cylindrical battery current collector according to the present invention. Figure 2 This is a schematic diagram of the adjustment component structure of an automated assembly equipment for preventing deformation of a multi-tab cylindrical battery current collector according to the present invention. Figure 3 This is a schematic diagram of the drive component structure of an automated assembly equipment for preventing deformation of a multi-tab cylindrical battery current collector according to the present invention. Figure 4 This is a schematic diagram of the transfer component structure of an automated assembly equipment for anti-deformation of a multi-tab cylindrical battery current collector according to the present invention. Figure 5 This is a schematic diagram of the welding base and laser welding machine unfolded structure of an automated assembly equipment for anti-deformation of a multi-tab cylindrical battery current collector plate according to the present invention. Figure 6 This is a schematic diagram of the chassis connection structure of an automated assembly equipment for anti-deformation of a multi-tab cylindrical battery current collector according to the present invention.

[0017] In the diagram: 1. Connecting frame; 2. Top plate; 3. Conveyor belt; 4. Bottom plate; 5. Connecting plate; 6. Welding base; 7. Adjustment assembly; 701. Drive motor; 702. Drive gear; 703. Placement seat; 704. Transmission gear; 705. Pressure detection plate; 8. Longitudinal adjustment frame; 9. Lateral adjustment frame; 10. Drive assembly; 1001. Servo motor; 1002. Lead screw; 1003. Slide; 11. CCD camera; 12. Auxiliary frame; 13. Transfer assembly; 1301. Vacuum pump; 1302. Vacuum tube; 1303. Hydraulic rod; 1304. Vacuum suction cup; 1305. Connecting plate; 1306. Positioning component; 14. Laser welding machine; 15. Adapter plate; 16. Hydraulic cylinder; 17. Forward and reverse motor; 18. Chassis; 19. Top plate. Detailed Implementation

[0018] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0019] like Figures 1-6As shown, an automated assembly device for anti-deformation of a cylindrical battery current collector with full tabs includes a connecting frame 1, a top plate 2, a conveyor belt 3, a bottom plate 4, a connecting plate 5, a welding base 6, an adjusting assembly 7, a drive motor 701, a drive gear 702, a placement seat 703, a transmission gear 704, a pressure detection plate 705, a longitudinal adjusting frame 8, a transverse adjusting frame 9, a drive assembly 10, a servo motor 1001, a lead screw 1002, a slide 1003, a CCD camera 11, an auxiliary frame 12, a transfer assembly 13, a vacuum pump 1301, a vacuum tube 1302, a hydraulic rod 1303, a vacuum suction cup 1304, a connecting plate 1305, a positioning component 1306, a laser welding machine 14, an adapter plate 15, a hydraulic cylinder 16, a forward and reverse motor 17, a chassis 18, and... The top plate 19 has a longitudinal adjustment frame 8 installed inside the top plate 2, and a transverse adjustment frame 9 is provided at the bottom of the longitudinal adjustment frame 8. A connecting frame 1 is installed on one side of the top of the top plate 2, and the connecting frame 1 is vertically arranged on one side of the bottom plate 4. An auxiliary frame 12 is installed at the bottom of the transverse adjustment frame 9, and a CCD camera 11 is provided on one side of the bottom of the auxiliary frame 12. A transfer assembly 13 for auxiliary assembly is installed on one side inside the CCD camera 11, and the transfer assembly 13 includes a vacuum pump 1301, a vacuum tube 1302, a hydraulic rod 1303, a vacuum suction cup 1304, a connecting plate 1305, and a positioning component 1306. A vacuum tube 1302 is installed at the input end of the vacuum pump 1301, and a vacuum suction cup 1304 is provided at the bottom of the vacuum tube 1302. A hydraulic rod 1303 is installed in the middle of the vacuum suction cup 1304, and a connecting plate 1305 is provided on one outer surface of the vacuum suction cup 1304. A positioning component 1306 is rotatably installed on the bottom of the connecting plate 1305. An adjustment assembly 7 is provided on the outer side of the positioning component 1306. The adjustment assembly 7 includes a drive motor 701, a drive gear 702, a placement seat 703, a transmission gear 704, and a pressure detection plate 705. The output end of the drive motor 701 is equipped with the drive gear 702, and the outer surface of the drive gear 702 is meshed with the transmission gear 704. The placement seat 703 is installed in the middle of the transmission gear 704, and the middle of the placement seat 703 is electrically connected to the pressure detection plate 705 through a pressure sensor. The top plate 19 is located on the drive gear 702. At the bottom, a chassis 18 is rotatably mounted on the bottom of the top plate 19, and a forward / reverse motor 17 is mounted on the lower center of the chassis 18. Connecting plates 5 are mounted on both sides of the bottom of the chassis 18, and a base plate 4 is fixed to the connecting plates 5 by bolts. A conveyor belt 3 is provided on one side of the outer surface of the base plate 4, and the conveyor belt 3 is positioned below the transfer assembly 13. A welding base 6 is provided on one side of the base plate 4, and a hydraulic cylinder 16 is installed inside the welding base 6. An adapter plate 15 is provided at the output end of the hydraulic cylinder 16, and a laser welding machine 14 is mounted on one side of the adapter plate 15. Drive components 10 for auxiliary movement are installed inside both the longitudinal adjustment frame 8 and the transverse adjustment frame 9. After the CCD camera 11 completes positioning calibration, the transfer assembly 13 starts to perform the collection plate gripping and transfer operation.Vacuum pump 1301 starts to generate negative pressure, which is transmitted to vacuum suction cup 1304 through vacuum tube 1302. Vacuum suction cup 1304 adopts a multi-point uniform adsorption structure to achieve stable adsorption of the thin manifold over the entire area, avoiding warping and deformation of the manifold caused by single-point adsorption. Hydraulic rod 1303 drives vacuum suction cup 1304 to move up and down, and with the lateral and longitudinal adjustment displacement, the firmly adsorbed manifold is accurately transferred and placed on top of the battery cell tab, completing the initial bonding. The battery cell tab is placed inside the size-matched placement seat 703, using the formed groove for pre-positioning and limiting. After the manifold is placed in place, vacuum suction cup 1304... 304 disconnects the negative pressure and retracts slightly. The positioning component 1306 at the bottom of the connecting plate 1305 moves to the top of the current collector and the full tab of the battery cell to be spot welded using the design of the drive assembly 10. Then, it presses down synchronously to limit the current collector. With the support of the placement seat 703, the current collector and the battery cell are coaxially positioned. Then, the hydraulic rod 1303 presses down slightly, and the vacuum suction cup 1304 applies uniform and flexible pressure to the current collector and holds the pressure briefly. The pressure detection plate 705 monitors the pressing pressure in real time to ensure that the pressure is within the preset anti-deformation range, so that the current collector and the end face of the full tab are tightly fitted without gaps or local pressure deformation. After the pressing and fixing process is completed, the adjustment component 7 starts the station switching. The drive motor 701 drives the drive gear 702 to rotate, which in turn drives the transmission gear 704 to rotate synchronously. This, in turn, drives the placement seat 703 in the middle and the battery cell to rotate. The battery cell and the current collector plate will remain constrained while maintaining the alignment of the axis with the positioning component 1306. The base plate 18 at the bottom of the top plate 19 cooperates with the forward and reverse motor 17 to rotate the entire top plate 19 and the adjustment component 7. This facilitates the adjustment of the current collector plate to be welded and allows for automatic replacement of the next set of components to be assembled and welded after the current current collector plate has finished welding a battery cell. An angle encoder is installed at the top plate 19 to monitor the rotation angle. When the preset angle is reached, the controller will control the start and stop of the forward and reverse motor 17, and the hydraulic cylinder 16 inside the welding base 6 will start, driving the adapter plate 15 and the laser welding machine 14 to adjust their height. The laser welding head is aligned with the contact point between the current collector and the full electrode tab, and a circular welding trajectory is used to weld the contact area in segments, firmly connecting the current collector and the full electrode tab of the battery cell. At the same time, it avoids the problem of thermal deformation and warping of the current collector caused by continuous welding heat accumulation. During the welding process, the equipment controls the laser power and welding speed in a closed loop throughout the process to ensure welding strength and assembly accuracy.

[0020] like Figure 1 and Figure 3As shown, the drive assembly 10 includes a servo motor 1001, a lead screw 1002, and a slide block 1003. The lead screw 1002 is mounted on the output end of the servo motor 1001. The lead screw 1002 is threaded onto the outer surface of its outer surface, and its bottom is fixedly connected to the slide block 1003. Multi-dimensional precise adjustment of the feeding and welding stations is achieved through the longitudinal adjustment frame 8, the transverse adjustment frame 9, and the drive assembly 10. The servo motor 1001 within the drive assembly 10 drives the lead screw 1002 to rotate. This causes the slide block 1003 to reciprocate linearly along the lead screw 1002, simultaneously driving the auxiliary frame 12 connected to the bottom to complete the lateral displacement adjustment. The longitudinal adjustment frame 8 adapts to drive the lateral adjustment frame 9 to complete the longitudinal displacement adjustment, achieving precise alignment between the transfer component 13 and the CCD camera 11. The CCD camera 11 on one side of the bottom of the auxiliary frame 12 is used to precisely align the all-tab cylindrical battery current collector placed on the surface of the conveyor belt 3, ensuring that the transfer component 13 is accurately aligned with the all-tab cylindrical battery current collector.

[0021] In summary, the anti-deformation automated assembly equipment for the current collector of this all-tab cylindrical battery firstly... Figures 1-6The structure shown, in use, achieves multi-dimensional precise adjustment of the feeding and welding stations through the longitudinal adjustment frame 8, the transverse adjustment frame 9, and the drive assembly 10. The servo motor 1001 within the drive assembly 10 drives the lead screw 1002 to rotate, thereby causing the slide block 1003 to reciprocate linearly along the lead screw 1002, simultaneously driving the auxiliary frame 12 connected to the bottom to complete transverse displacement adjustment. The longitudinal adjustment frame 8 adapts to drive the transverse adjustment frame 9 to complete longitudinal displacement adjustment, achieving precise alignment of the transfer assembly 13 and the CCD camera 11 at the workstation. The CCD camera 11 on one side of the bottom of the auxiliary frame 12 is used to precisely align the all-tab cylindrical battery current collector placed on the surface of the conveyor belt 3, ensuring that the transfer assembly 13 is accurately aligned with the all-tab cylindrical battery current collector. After the CD camera 11 completes its positioning and calibration, the transfer assembly 13 starts to perform the current collector plate gripping and transfer operation. The vacuum pump 1301 starts to generate negative pressure, which is transmitted to the vacuum suction cup 1304 through the vacuum tube 1302. The vacuum suction cup 1304 adopts a multi-point uniform adsorption structure to achieve stable adsorption of the thin current collector plate over the entire area, avoiding warping and deformation of the current collector plate caused by single-point adsorption. The hydraulic rod 1303 drives the vacuum suction cup 1304 to move up and down, and with the lateral and longitudinal adjustment displacement, the firmly adsorbed current collector plate is accurately transferred and placed on top of the battery cell tab, completing the initial bonding. The battery cell tab is placed inside the size-matched placement seat 703, and the formed groove is used for pre-positioning and limiting. After the current collector plate is placed in place, the vacuum suction cup 1304 disconnects the negative pressure. The pressure is applied and slightly retracted. The positioning component 1306 at the bottom of the connecting plate 1305 moves to the top of the current collector and the battery cell tabs to be spot welded using the design of the drive assembly 10. Then, it presses down synchronously to limit the current collector, and with the support of the placement seat 703, the current collector and the battery cell are coaxially positioned. Then, the hydraulic rod 1303 presses down slightly, and the vacuum suction cup 1304 applies uniform and flexible pressure to the current collector and holds the pressure briefly. The pressure detection plate 705 monitors the pressing pressure in real time to ensure that the pressure is within the preset anti-deformation range, so that the current collector and the tab end face are tightly fitted without gaps or local pressure deformation, completing the pressing and fixing process. After the pressing and fixing is completed, the adjustment assembly 7 starts the station switching, and the drive motor 701 drives the drive gear 702 to rotate. The meshing drives the transmission gear 704 to rotate synchronously, which in turn drives the central placement seat 703 and the battery cell to rotate. The battery cell and the current collector plate will remain confined while maintaining the alignment of the axes around the positioning component 1306. The base plate 18 at the bottom of the top plate 19 cooperates with the forward and reverse motor 17 to rotate the entire top plate 19 and the adjustment component 7, which facilitates the adjustment of the current collector plate to be welded and allows for automatic replacement of the current collector plate with the next set of components to be assembled after the current current collector plate has been welded. An angle encoder is installed at the top plate 19 to monitor the rotation angle. When the preset angle is reached, the controller will control the forward and reverse motor 17 to start and stop, and the hydraulic cylinder 16 inside the welding base 6 will start, driving the adapter plate 15 and the laser welding machine 14 to lift and adjust.The laser welding head is aligned with the contact point between the current collector and the full tab. A circular welding trajectory is used to weld the contact area in segments, firmly connecting the current collector and the full tab of the battery cell. This avoids thermal deformation and warping of the current collector caused by continuous welding heat accumulation. During the welding process, the equipment uses closed-loop control of laser power and welding speed to ensure welding strength and assembly accuracy. After assembly and welding are completed, the assembled full-tab cylindrical battery current collector can be adsorbed and transferred to the unused area of ​​the base plate 4 using the design of the longitudinal adjustment frame 8, the transverse adjustment frame 9, the drive component 10, and the transfer component 13.

[0022] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. An automated assembly equipment for anti-deformation of a current collector for a cylindrical battery with all tabs, comprising a top plate (2) and a top plate (19), characterized in that, The top plate (2) is equipped with a longitudinal adjustment frame (8), and a transverse adjustment frame (9) is provided at the bottom of the longitudinal adjustment frame (8). An auxiliary frame (12) is installed at the bottom of the transverse adjustment frame (9), and a CCD camera (11) is provided on one side of the bottom of the auxiliary frame (12). A transfer assembly (13) for auxiliary assembly is installed on one side inside the CCD camera (11). The transfer assembly (13) includes a vacuum pump (1301), a vacuum tube (1302), a hydraulic rod (1303), a vacuum suction cup (1304), a connecting plate (1305), and a positioning component (1306). The vacuum tube (1302) is installed at the input end of the vacuum pump (1301), and a vacuum suction cup (1304) is provided at the bottom of the vacuum tube (1302). A hydraulic rod (1303) is installed in the middle of the vacuum suction cup (1304), and a connecting plate is provided on one side of the outer surface of the vacuum suction cup (1304). 1305), a positioning component (1306) is rotatably mounted on the bottom of the connecting plate (1305). An adjustment assembly (7) is provided on the outer side of the positioning component (1306). The adjustment assembly (7) includes a drive motor (701), a drive gear (702), a placement seat (703), a transmission gear (704), and a pressure detection plate (705). The output end of the drive motor (701) is equipped with the drive gear (702), and the outer surface of the drive gear (702) is meshed with the transmission gear (704). The middle part of the transmission gear (704) is equipped with the placement seat (703), and the middle part of the placement seat (703) is electrically connected to the pressure detection plate (705) through a pressure sensor. The top plate (19) is located at the bottom of the drive gear (702). The interior of the longitudinal adjustment frame (8) and the transverse adjustment frame (9) are equipped with drive assemblies (10) for auxiliary movement.

2. The anti-deformation automated assembly equipment for a full-tab cylindrical battery current collector as described in claim 1, characterized in that, The bottom of the top plate (19) is rotatably mounted with a chassis (18), and a forward and reverse motor (17) is mounted on the lower center of the chassis (18).

3. The anti-deformation automated assembly equipment for a full-tab cylindrical battery current collector as described in claim 2, characterized in that, Both sides of the bottom of the chassis (18) are equipped with connecting plates (5), and the connecting plates (5) are fixed to the bottom plate (4) by bolts.

4. The anti-deformation automated assembly equipment for a full-tab cylindrical battery current collector as described in claim 3, characterized in that, A welding base (6) is provided on one side of the base plate (4), and a hydraulic cylinder (16) is installed inside the welding base (6).

5. The anti-deformation automated assembly equipment for a full-tab cylindrical battery current collector as described in claim 4, characterized in that, The output end of the hydraulic cylinder (16) is provided with an adapter plate (15), and a laser welding machine (14) is installed on one side of the adapter plate (15).

6. The anti-deformation automated assembly equipment for a full-tab cylindrical battery current collector as described in claim 1, characterized in that, The drive assembly (10) includes a servo motor (1001), a lead screw (1002) and a slide (1003), and the output end of the servo motor (1001) is equipped with a lead screw (1002). The lead screw (1002) is threaded on the outer surface of the lead screw (1002), and the bottom of the lead screw (1002) is fixedly connected to the lead screw (1002).

7. The anti-deformation automated assembly equipment for a full-tab cylindrical battery current collector as described in claim 3, characterized in that, A connecting frame (1) is installed on one side of the top plate (2), and the connecting frame (1) is vertically set on one side of the bottom plate (4).

8. The anti-deformation automated assembly equipment for a full-tab cylindrical battery current collector as described in claim 3, characterized in that, A conveyor belt (3) is provided on one side of the outer surface of the base plate (4), and the conveyor belt (3) is located below the transfer assembly (13).

9. The anti-deformation automated assembly equipment for a full-tab cylindrical battery current collector as described in claim 1, characterized in that, The lower adsorption surface of the vacuum suction cup (1304) is provided with multiple independent adsorption holes.

10. The anti-deformation automated assembly equipment for a full-tab cylindrical battery current collector according to claim 9, characterized in that, The multiple adsorption pores are connected to the vacuum tube (1302) through the gas distribution structure to achieve multi-point uniform adsorption of the collector plate.

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