A welding device for sealing a cylindrical battery cell

Abstract

This utility model discloses a welding device for sealing cylindrical battery cells, including a battery cell rotating device, a feeding device, a cylindrical battery cell, a robotic arm, and a welding torch. The battery cell rotating device includes a supporting chassis, a supporting frame fixedly connected to the outer bottom of the supporting chassis, a second servo motor fixedly installed in the middle of the supporting frame, and a rotating disk rotatably connected to the top of the supporting chassis. A limit bracket is fixedly installed in the middle of the top of the rotating disk, and limit slots are evenly formed on the outer side of the limit bracket. The limit slots match the outer diameter of the cylindrical battery cell. This utility model achieves automatic positioning and cyclic transfer of the cylindrical battery cell through the linkage design of the rotating disk and the limit slots. Combined with the synergistic effect of the outer ring limit rod and the feeding lever, it ensures accurate positioning and automatic feeding of the battery cell during rotation, significantly improving welding efficiency.

Description

Technical Field

[0001] This utility model relates to the field of battery processing and welding, specifically a welding device for sealing cylindrical battery cells. Background Technology

[0002] Welding for sealing cylindrical battery cells is a key process that achieves a sealed connection and electrical conduction between the casing and top cover of a cylindrical battery through high-precision welding. It mainly uses technologies such as laser welding, resistance welding, or ultrasonic welding and is a core link to ensure battery safety performance. Traditional cell transfer mechanisms often use fixed clamps or single conveyor belt designs, which cannot achieve continuous cycle operation. Moreover, the clamps are prone to shaking, resulting in unstable welding quality and requiring frequent stops to adjust the clamps. Therefore, there is an urgent need for a welding device for sealing cylindrical battery cells to solve the above problems. Utility Model Content

[0003] The purpose of this invention is to provide a welding device for sealing cylindrical battery cells, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a welding device for sealing cylindrical battery cells, comprising a battery cell operating device, a feeding device, a cylindrical battery cell, a robotic arm, and a welding torch. The battery cell operating device includes a supporting chassis, a supporting frame fixedly connected to the outer side of the bottom end of the supporting chassis, a second servo motor fixedly installed in the middle of the supporting frame, a rotating disk rotatably connected to the top end of the supporting chassis, a limit bracket fixedly installed in the middle of the top end of the rotating disk, and limit slots evenly formed on the outer side of the limit bracket, the limit slots matching the outer diameter of the cylindrical battery cell.

[0005] Preferably, an outer ring limiting rod is fixedly installed on the outer side of the top of the supporting chassis, and a feeding plate is fixedly connected to the outer side of the supporting chassis. The end of the outer ring limiting rod near the feeding plate is fixedly installed on the top of the feeding plate, and a guide rod is fixedly installed on the top side of the feeding plate away from the outer ring limiting rod. A feeding lever is fixedly connected to the end of the guide rod near the supporting chassis.

[0006] Preferably, the feeding device includes a transport frame, a transfer roller is uniformly rotatably mounted on the inner side of the transport frame, a conveyor belt is driven to the outer side of the transfer roller, a first servo motor is fixedly mounted on one end of the outer side of the transport frame, and the drive end of the first servo motor is fixedly mounted on the end of the transfer roller near the first servo motor.

[0007] Preferably, two limiting rails are symmetrically fixedly installed at the top of the transport frame, and the distance between the two limiting rails is the same as the outer diameter of the cylindrical battery cell.

[0008] Preferably, the end of the transport frame away from the first servo motor is located outside the rotating disk, and the top of the conveyor belt is higher than the top of the rotating disk.

[0009] Preferably, the robotic arm is disposed on the outside of the supporting chassis and is located on the opposite side of the transport frame.

[0010] Preferably, the welding torch is fixedly mounted on the mechanical gripper of the robotic arm, and a control host is provided at the bottom of the robotic arm. The control host is wiredly connected to the robotic arm, the welding torch, the second servo motor, and the first servo motor.

[0011] Preferably, the drive end of the second servo motor is fixedly installed at the middle of the bottom end of the rotating disk.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention achieves automatic positioning and cyclic transfer of cylindrical battery cells through the linkage design of the rotating disk and the limiting slot. Combined with the synergistic effect of the outer ring limiting rod and the unloading lever, it ensures that the battery cells are accurately aligned and automatically unloaded during rotation, significantly improving welding efficiency. The intermittent indexing control driven by the servo motor allows the battery cells to stop at the welding station at a preset angle. With the precise operation of the robotic arm and welding gun, the consistency of the sealing welding is ensured. The whole system is integrated and controlled by the control host to realize feeding, welding, and unloading, which combines high precision, high efficiency and high reliability. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main three-dimensional structure of the present utility model;

[0015] Figure 2 This is a schematic diagram of the battery cell operation device in this utility model;

[0016] Figure 3 This is a schematic diagram of the battery cell operation device in this utility model;

[0017] Figure 4 This is a schematic diagram of the feeding device in this utility model.

[0018] In the diagram: 1-Cell operating device; 2-Feeding device; 3-Cylindrical cell; 4-Robot arm; 5-Welding gun; 6-Transport frame; 7-Transfer roller; 8-Conveyor belt; 9-First servo motor; 10-Limit rail; 11-Support chassis; 12-Support base frame; 13-Second servo motor; 14-Outer ring limit rod; 15-Unloading plate; 16-Guide rod; 17-Unloading lever; 18-Rotating disk; 19-Limit bracket; 20-Limit slot; 21-Control host. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-4 This utility model provides an embodiment of a welding device for sealing cylindrical battery cells, comprising a battery cell operating device 1, a feeding device 2, a cylindrical battery cell 3, a robotic arm 4, and a welding torch 5. The battery cell operating device 1 includes a supporting chassis 11, a supporting frame 12 fixedly connected to the outer side of the bottom end of the supporting chassis 11, a second servo motor 13 fixedly mounted in the middle of the supporting frame 12, and a rotating disk 18 rotatably connected to the top end of the supporting chassis 11. The drive end of the second servo motor 13 is fixedly mounted in the middle of the bottom end of the rotating disk 18, and a limit bracket 19 is fixedly mounted in the middle of the top end of the rotating disk 18. Limit slots 20 are evenly formed on the outer side of the limit bracket 19, and the limit slots 20 match the outer diameter of the cylindrical battery cell 3. The drive end of the second servo motor 13 drives the rotating disk 18 to rotate, and the rotation of the rotating disk 18 drives the limit bracket 19 to rotate. The limiting bracket 19 rotates the cylindrical battery cell 3 by wrapping it in the limiting slot 20. An outer ring limiting rod 14 is fixedly installed on the outer side of the top of the supporting chassis 11, and the cylindrical battery cell 3 is always located inside the limiting slot 20 by the surrounding of the outer ring limiting rod 14. A feeding plate 15 is fixedly connected to the outer side of the supporting chassis 11. The end of the outer ring limiting rod 14 near the feeding plate 15 is fixedly installed on the top of the feeding plate 15. A guide rod 16 is fixedly installed on the side of the top of the feeding plate 15 away from the outer ring limiting rod 14. A feeding lever 17 is fixedly connected to the end of the guide rod 16 near the supporting chassis 11. The feeding lever 17 peels the cylindrical battery cell 3 located inside the limiting slot 20 out of the inner side of the limiting slot 20, and the cylindrical battery cell 3 moves away from the top of the rotating disk 18 and moves to the top of the feeding plate 15 by the guidance of the guide rod 16.

[0021] The feeding device 2 includes a transport frame 6. A transfer roller 7 is uniformly rotated and installed on the inner side of the transport frame 6. A conveyor belt 8 is connected to the outer side of the transfer roller 7. A first servo motor 9 is fixedly installed at one end of the outer side of the transport frame 6. The drive end of the first servo motor 9 is fixedly installed at the end of the transfer roller 7 near the first servo motor 9. Two limit rails 10 are symmetrically fixedly installed at the top of the transport frame 6. The distance between the two limit rails 10 is the same as the outer diameter of the cylindrical battery cell 3. The cylindrical battery cell 3 is limited and kept moving in a straight line by the limit rails 10 on both sides.

[0022] The end of the transport frame 6 away from the first servo motor 9 is located on the outside of the rotating disk 18, and the top of the conveyor belt 8 is higher than the top of the rotating disk 18. When the cylindrical battery cell 3 moves to the end of the conveyor belt 8, it falls on the top of the rotating disk 18. The cylindrical battery cell 3 that moves to the top of the rotating disk 18 is squeezed to the inside of the limiting slot 20 by the subsequent cylindrical battery cell 3 that moves closer to the rotating disk 18. The robot arm 4 is set on the outside of the support chassis 11, and the robot arm 4 is located on the opposite side of the transport frame 6.

[0023] The welding torch 5 is fixedly mounted on the mechanical gripper of the robot arm 4. The bottom of the robot arm 4 is equipped with a control host 21. The control host 21 is electrically connected to the robot arm 4, the welding torch 5, the second servo motor 13 and the first servo motor 9 through its internal control module. The control host 21 sets the control program to control the operation of the equipment.

[0024] Working principle: During use, the second servo motor 13 is first set to rotate intermittently by the control host 21, and the rotation angle of the second servo motor 13 is set each time so that when the second servo motor 13 stops, the center of the opening end of the limit slot 20 is located on the center line of the conveyor belt 8 and the robot arm 4. The time interval between each rotation is the time for the robot arm 4 to drive the welding gun 5 to weld the cylindrical battery cell 3. Then, the first servo motor 9 and the second servo motor 13 are started, and the cylindrical battery cell 3 is placed at the top of the conveyor belt 8 with the welding end of the cylindrical battery cell 3 at the top. The drive end of the first servo motor 9 drives the transfer roller 7 to rotate slowly. The rotation of the transfer roller 7 drives the conveyor belt 8 to move, thereby moving the cylindrical battery cell 3 at the top of the conveyor belt 8 closer to the rotating disk 18. When the cylindrical battery cell 3 moves to the end of the conveyor belt 8, the cylindrical battery cell 3 is pushed to the top of the rotating disk 18. The drive end of the second servo motor 13 drives the rotating disk 18 to rotate intermittently. The rotating disk 18 drives the limiting bracket 19 to rotate synchronously. The cylindrical battery cell 3 moves to the inside of the limiting slot 20. The subsequent cylindrical battery cell 3 abuts against the outside of the cylindrical battery cell 3 inside the limiting slot 20. When the second servo motor 13 starts to rotate again, the limiting bracket 19 wraps the cylindrical battery cell 3 through the limiting slot 20 and rotates it to the inside of the outer ring limiting rod 14. When the cylindrical battery cell 3 rotates to the robot arm 4, the robot arm 4 controls the welding gun 5 to perform welding operation on the cylindrical battery cell 3. After the welding is completed, the second servo motor 13 continues to drive the rotating disk 18 to rotate. When the welded cylindrical battery cell 3 moves to the unloading lever 17, the cylindrical battery cell 3 is peeled off the inside of the limiting slot 20 by the unloading lever 17 and moved to the top of the unloading plate 15. At this time, the operator can remove the cylindrical battery cell 3 from the top of the unloading plate 15.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding device for sealing cylindrical battery cells, comprising a battery cell operating device (1), a feeding device (2), a cylindrical battery cell (3), a robotic arm (4), and a welding torch (5), characterized in that: The cell operating device (1) includes a support chassis (11), a support frame (12) is fixedly connected to the outer side of the bottom end of the support chassis (11), a second servo motor (13) is fixedly installed in the middle of the support frame (12), a rotating disk (18) is rotatably connected to the top end of the support chassis (11), a limit bracket (19) is fixedly installed in the middle of the top end of the rotating disk (18), and limit slots (20) are evenly opened on the outer side of the limit bracket (19), and the limit slots (20) match the outer diameter of the cylindrical cell (3).

2. The welding device for sealing a cylindrical battery cell according to claim 1, wherein: An outer ring limiting rod (14) is fixedly installed on the outer side of the top of the support chassis (11). A feeding plate (15) is fixedly connected to the outer side of the support chassis (11). One end of the outer ring limiting rod (14) near the feeding plate (15) is fixedly installed on the top of the feeding plate (15). A guide rod (16) is fixedly installed on the side of the top of the feeding plate (15) away from the outer ring limiting rod (14). A feeding lever (17) is fixedly connected to one end of the guide rod (16) near the support chassis (11).

3. The welding device for sealing a cylindrical battery cell according to claim 1, wherein: The feeding device (2) includes a transport frame (6), a transfer roller (7) is uniformly rotated and installed on the inner side of the transport frame (6), a conveyor belt (8) is connected to the outer side of the transfer roller (7), a first servo motor (9) is fixedly installed at one end of the outer side of the transport frame (6), and the drive end of the first servo motor (9) is fixedly installed at the end of the transfer roller (7) near the first servo motor (9).

4. The welding device for sealing a cylindrical battery cell according to claim 3, wherein: Two limiting rails (10) are symmetrically fixedly installed at the top of the transport frame (6), and the distance between the two limiting rails (10) is the same as the outer diameter of the cylindrical battery cell (3).

5. The welding device for sealing a cylindrical battery cell according to claim 4, wherein: The end of the transport frame (6) away from the first servo motor (9) is located outside the turntable (18), and the top of the conveyor belt (8) is higher than the top of the turntable (18).

6. The welding device for sealing a cylindrical battery cell according to claim 5, wherein: The robotic arm (4) is located on the outside of the supporting chassis (11) and on the opposite side of the transport frame (6).

7. The welding device for sealing cylindrical battery cells according to claim 5, characterized in that: The welding torch (5) is fixedly mounted on the mechanical claw of the robotic arm (4). The bottom end of the robotic arm (4) is provided with a control host (21). The control host (21) is electrically connected to the robotic arm (4), the welding torch (5), the second servo motor (13), and the first servo motor (9).

8. The welding device for sealing a cylindrical battery cell according to claim 1, wherein: The drive end of the second servo motor (13) is fixedly installed in the middle of the bottom end of the rotating disk (18).

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