Lithium battery bus bar welding device

Abstract

The utility model discloses a lithium battery bus bar welding device which comprises a machining base and a fixing frame fixedly connected to the top of the machining base, a motor is fixedly connected to one side of an inner cavity of the fixing frame, a rotating rod is fixedly connected to an output shaft of the motor through a coupler, and a rotating frame is fixedly connected to one end of the rotating rod. The utility model relates to the technical field of lithium batteries. According to the lithium battery bus piece welding device, after a clamping mechanism is controlled to drive two limiting plates to clamp and fix a lithium battery, a first electric telescopic rod is controlled to extend to drive a welding head to downwards weld a bus piece, then a motor is controlled to drive a rotating rod to rotate by 180 degrees, and the rotating rod can drive a rotating frame to rotate; the rotating frame can drive the lithium battery to turn over through the two limiting plates, so that the lithium battery can be well and directly turned over, the clamping mechanism does not need to be opened and then combined, the welding time can be effectively saved, and the welding efficiency of the lithium battery bus bar is improved.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery technology, specifically to a lithium battery busbar welding device. Background Technology

[0002] Lithium batteries are a clean and efficient energy source. They can be composed of a positive electrode, a negative electrode, a separator, and an electrolyte. In the production process of lithium batteries, it is necessary to laser weld busbars on the positive and negative electrodes. A laser welding machine is required to weld the busbars of the positive and negative electrodes of the lithium battery.

[0003] Currently, when laser welding busbars onto the positive and negative electrodes of lithium batteries, the lithium batteries need to be clamped and fixed in advance to prevent them from shifting and affecting the welding quality. However, after welding the busbars on the positive or negative electrodes of the lithium battery, the clamping mechanism needs to be opened, the lithium battery flipped over, and clamped and fixed again before welding the busbars onto the other electrode of the lithium battery. This manual operation takes a lot of time and affects the efficiency of lithium battery busbar welding. Furthermore, manually operating the clamping mechanism to fix the lithium battery is too time-consuming and laborious. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a lithium battery busbar welding device, which solves the problem that opening the clamping mechanism, flipping the lithium battery, and then clamping and fixing it before welding the other electrode of the lithium battery to the busbar requires a lot of time and manual operation of the clamping mechanism to fix the lithium battery, making the operation too time-consuming and labor-intensive.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a lithium battery busbar welding device, comprising a processing base and a fixed frame fixedly connected to the top of the processing base. A motor is fixedly connected to one side of the inner cavity of the fixed frame, and a rotating rod is fixedly connected to the output shaft of the motor via a coupling. A rotating frame is fixedly connected to one end of the rotating rod, and a rotating rod is fixedly connected to one side of the rotating frame. One end of the rotating rod is rotatably connected to the fixed frame via a bearing. Limit plates are provided on both sides inside the rotating frame, and a clamping mechanism adapted to the limit plates is provided at the rear of the rotating frame. A first electric telescopic rod is fixedly connected to the top of the inner cavity of the fixed frame, and a laser welding machine is fixedly connected to the telescopic end of the first electric telescopic rod. A welding head is provided at the bottom of the laser welding machine.

[0006] Preferably, the clamping mechanism includes a second electric telescopic rod, which is fixedly connected to the rear of the rotating frame via a fixing block. Sliding slots are provided on both sides of the rear of the rotating frame, and sliding blocks are slidably connected inside the sliding slots. A sliding plate is fixedly connected to the rear of the sliding blocks, and the telescopic end of the second electric telescopic rod is fixedly connected to the right sliding plate.

[0007] Preferably, a first toothed pressure plate and a second toothed pressure plate are fixedly connected to opposite sides of the two sliding plates, and a gear adapted to the first toothed pressure plate and the second toothed pressure plate is rotatably connected to the rear of the rotating frame via a bearing. A movable plate is fixedly connected to the front of the sliding block, and one side of the movable plate is installed with a limiting plate by bolts.

[0008] Preferably, extrusion cylinders are fixedly connected to both sides of the bottom of the laser welding machine, an extrusion rod is slidably connected inside the extrusion cylinder, and a spring is fixedly connected between the top of the inner cavity of the extrusion cylinder and one end of the extrusion rod.

[0009] Preferably, the other end of the extrusion rod is fixedly connected to a mounting plate, and an extrusion ring is fixedly connected between the two mounting plates on opposite sides.

[0010] Preferably, the top of the processing base is provided with a strip groove, and a support block is slidably connected to the strip groove via a slider.

[0011] Beneficial effects

[0012] This invention provides a lithium battery busbar welding device. Compared with existing technologies, it has the following advantages:

[0013] (1) This utility model controls the clamping mechanism to drive two limiting plates to clamp and fix the lithium battery, then controls the first electric telescopic rod to extend and drive the welding head downward to weld the busbar, and then controls the motor to drive the rotating rod to rotate 180 degrees. The rotating rod will drive the rotating frame to rotate, and the rotating frame will drive the lithium battery to flip through the two limiting plates. Thus, the lithium battery can be flipped directly without opening the clamping mechanism and then closing it. This effectively saves welding time and improves the efficiency of lithium battery busbar welding.

[0014] (2) This utility model controls the extension of the second electric telescopic rod to drive the right sliding plate to move towards the middle. The first toothed pressure plate on the right sliding plate will drive the second toothed pressure plate to move towards the middle through the gear. The second toothed pressure plate will drive the left sliding plate to move towards the middle, so that the two sliding plates move towards the middle at the same time. The two sliding plates will drive the two limiting plates to move towards the middle at the same time through the sliding block and the moving plate, so that the lithium battery can be clamped and fixed quickly, ensuring the quality of the lithium battery busbar welding. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0016] Figure 2 This is a rear view of the structure of this utility model;

[0017] Figure 3This is a structural schematic diagram of the rotating frame, rotating rod, limiting plate, sliding groove, sliding block and moving plate of this utility model;

[0018] Figure 4 This is a schematic diagram of the internal structure of the extrusion cylinder, extrusion rod, spring, mounting plate, and extrusion ring of this utility model.

[0019] In the diagram: 1. Machining base; 2. Fixed frame; 3. Motor; 4. Rotating rod; 5. Rotating frame; 6. Rotating rod; 7. Limiting plate; 8. Clamping mechanism; 9. First electric telescopic rod; 10. Laser welding machine; 11. Welding head; 12. Extrusion cylinder; 13. Extrusion rod; 14. Spring; 15. Mounting plate; 16. Extrusion ring; 17. Strip groove; 18. Support block; 81. Second electric telescopic rod; 82. Sliding through groove; 83. Sliding block; 84. Sliding plate; 85. First toothed pressure plate; 86. Second toothed pressure plate; 87. Gear; 88. Moving plate. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] Please see Figure 1-4 This utility model provides a technical solution: a lithium battery busbar welding device, including a processing base 1 and a fixed frame 2 fixedly connected to the top of the processing base 1. A motor 3 is fixedly connected to one side of the inner cavity of the fixed frame 2. The motor 3 is a servo motor, electrically connected to an external power source, and controlled by a control switch. The output shaft of the motor 3 is fixedly connected to a rotating rod 4 through a coupling. A rotating frame 5 is fixedly connected to one end of the rotating rod 4. A rotating rod 6 is fixedly connected to one side of the rotating frame 5. One end of the rotating rod 6 is rotatably connected to the fixed frame 2 through a bearing. Limit plates 7 are provided on both sides inside the rotating frame 5. A clamping mechanism 8 adapted to the limit plates 7 is provided at the rear of the rotating frame 5. A first electric telescopic rod 9 is fixedly connected to the top of the inner cavity of the fixed frame 2. The first electric telescopic rod 9 is electrically connected to an external power source and controlled by a control switch. A laser welding machine 10 is fixedly connected to the telescopic end of the first electric telescopic rod 9. The laser welding machine 10 is controlled by a control switch. A welding head 11 is provided at the bottom of the laser welding machine 10.

[0022] Furthermore, in order to quickly clamp and fix the lithium battery, the clamping mechanism 8 includes a second electric telescopic rod 81. The second electric telescopic rod 81 is electrically connected to the battery installed at the rear of the rotating frame 5 and is controlled by a control switch. The second electric telescopic rod 81 is fixedly connected to the rear of the rotating frame 5 by a fixing block. Sliding slots 82 are provided on both sides of the rear of the rotating frame 5. Sliding blocks 83 are slidably connected inside the sliding slots 82. A sliding plate 84 is fixedly connected to the rear of the sliding block 83. The telescopic end of the second electric telescopic rod 81 is fixedly connected to the right sliding plate 84. A first toothed pressure plate 85 and a second toothed pressure plate 86 are fixedly connected to opposite sides of the two sliding plates 84, respectively. A gear 87 that is adapted to the first toothed pressure plate 85 and the second toothed pressure plate 86 is rotatably connected to the rear of the rotating frame 5 through a bearing. A moving plate 88 is fixedly connected to the front of the sliding block 83. One side of the moving plate 88 is installed with a limiting plate 7 by bolts.

[0023] It should be noted that after welding a batch of lithium battery busbars, when welding other specifications of lithium batteries is required, multiple bolts on the moving plate 88 are removed by rotating them and replaced with a limiting plate 7 that is compatible with the specifications of the lithium batteries.

[0024] Furthermore, in order to facilitate the limiting and fixing of the busbar on the lithium battery, extrusion cylinders 12 are fixedly connected to both sides of the bottom of the laser welding machine 10. An extrusion rod 13 is slidably connected inside the extrusion cylinder 12. A spring 14 is fixedly connected between the top of the inner cavity of the extrusion cylinder 12 and one end of the extrusion rod 13. An installation plate 15 is fixedly connected to the other end of the extrusion rod 13. An extrusion ring 16 is fixedly connected between the opposite sides of the two installation plates 15.

[0025] Furthermore, in order to facilitate support when clamping the lithium battery, a strip groove 17 is provided on the top of the processing base 1. A support block 18 is slidably connected to the strip groove 17 via a slider, and a handle is fixedly connected to the front of the support block 18.

[0026] In use, the lithium battery is placed on the support block 18. By controlling the extension of the second electric telescopic rod 81, the right sliding plate 84 is moved towards the center. The right sliding plate 84 then moves the first toothed pressure plate 85 towards the center. The first toothed pressure plate 85, through the gear 87, moves the second toothed pressure plate 86 towards the center. The second toothed pressure plate 86 then moves the left sliding plate 84 towards the center, causing both sliding plates 84 to move towards the center simultaneously. The two sliding plates 84, through the sliding block 83, move the two moving plates 88 towards the center. The two moving plates 88 then move the two limiting plates 7 towards the center simultaneously, clamping and fixing the lithium battery. The busbar is then placed above the lithium battery. By controlling the extension of the first electric telescopic rod 9, the laser welding machine 10 is moved downwards. The laser welding machine 10 will... The welding head 11 moves downward, and the laser welding machine 10 moves downward through the two extrusion cylinders 12. The two extrusion cylinders 12 move downward through the extrusion rod 13 and the mounting plate 15, causing the extrusion ring 16 to move downward. The extrusion ring 16 is below the welding head 11. The extrusion ring 16 first contacts the busbar. The first electric telescopic rod 9 extends and drives the laser welding machine 10 to move downward. The laser welding machine 10 drives the welding head 11 to gradually insert into the extrusion ring 16. At the same time, the extrusion rod 13 compresses the spring 14 and retracts into the extrusion cylinder 12. The force of the spring 14 pushes the extrusion rod 13. The extrusion rod 13 compresses and limits the busbar on the lithium battery through the mounting plate 15 and the extrusion ring 16. Then, the welding head 11 on the laser welding machine 10 is controlled to perform laser welding on the busbar.

[0027] After laser welding of the busbar on the lithium battery, the support block 18 is moved to the left, and the first electric telescopic rod 9 is retracted to move the laser welding machine 10 and welding head 11 upwards to reset. The motor 3 is controlled to rotate the rotating rod 4 180 degrees, which in turn rotates the rotating frame 5. The rotating frame 5 rotates the lithium battery through the two rotating rods 6, turning the unwelded part to the top. The new busbar is then placed on the lithium battery. The first electric telescopic rod 9 is extended again to move the laser welding machine 10 downwards, so that the welding head 11 performs laser welding on the busbar on the lithium battery. After laser welding of the busbar on the lithium battery, the support block 18 is moved to the middle position, and the second electric telescopic rod 81 is retracted to move the two sliding plates 84 to the sides to reset. The two sliding plates 84 move the two limiting plates 7 to the sides through the sliding block 83, so that the two limiting plates 7 do not limit or fix the lithium battery. The lithium battery falls onto the support block 18, and the lithium battery can be removed for replacement.

Claims

1. A lithium battery busbar welding device, comprising a processing base (1) and a fixing frame (2) fixedly connected to the top of the processing base (1), characterized in that: A motor (3) is fixedly connected to one side of the inner cavity of the fixed frame (2). The output shaft of the motor (3) is fixedly connected to a rotating rod (4) via a coupling. A rotating frame (5) is fixedly connected to one end of the rotating rod (4). A rotating rod (6) is fixedly connected to one side of the rotating frame (5). One end of the rotating rod (6) is rotatably connected to the fixed frame (2) via a bearing. Limiting plates (7) are provided on both sides inside the rotating frame (5). A clamping mechanism (8) adapted to the limiting plate (7) is provided at the rear of the rotating frame (5). A first electric telescopic rod (9) is fixedly connected to the top of the inner cavity of the fixed frame (2). A laser welding machine (10) is fixedly connected to the telescopic end of the first electric telescopic rod (9). A welding head (11) is provided at the bottom of the laser welding machine (10).

2. The lithium battery busbar welding device according to claim 1, characterized in that: The clamping mechanism (8) includes a second electric telescopic rod (81), which is fixedly connected to the rear of the rotating frame (5) by a fixing block. Sliding slots (82) are provided on both sides of the rear of the rotating frame (5). A sliding block (83) is slidably connected inside the sliding slot (82). A sliding plate (84) is fixedly connected to the rear of the sliding block (83). The telescopic end of the second electric telescopic rod (81) is fixedly connected to the right sliding plate (84).

3. The lithium battery busbar welding device according to claim 2, characterized in that: The two sliding plates (84) are respectively fixedly connected to a first toothed pressure plate (85) and a second toothed pressure plate (86) on opposite sides. The rear of the rotating frame (5) is rotatably connected to a gear (87) that is compatible with the first toothed pressure plate (85) and the second toothed pressure plate (86) via a bearing. The front of the sliding block (83) is fixedly connected to a moving plate (88). One side of the moving plate (88) is installed with a limiting plate (7) via bolts.

4. The lithium battery busbar welding device according to claim 1, characterized in that: The laser welding machine (10) has extrusion cylinders (12) fixedly connected to both sides of its bottom. An extrusion rod (13) is slidably connected inside the extrusion cylinder (12). A spring (14) is fixedly connected between the top of the inner cavity of the extrusion cylinder (12) and one end of the extrusion rod (13).

5. The lithium battery busbar welding device according to claim 4, characterized in that: The other end of the extrusion rod (13) is fixedly connected to an installation plate (15), and an extrusion ring (16) is fixedly connected between the two opposite sides of the installation plates (15).

6. The lithium battery busbar welding device according to claim 1, characterized in that: The top of the processing base (1) is provided with a strip groove (17), and a support block (18) is slidably connected to the strip groove (17) by a slider.

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