Soft package lithium battery lamination positioning mechanism

Abstract

The utility model relates to a soft package lithium battery lamination positioning mechanism, which belongs to the technical field of lithium battery lamination positioning and comprises a supporting piece and a positioning piece. The supporting piece is a supporting ring, and a plurality of evenly-distributed positioning pieces are fixed to the supporting ring. The positioning piece comprises a first motor and a second motor, a top plate is arranged between the first motor and the second motor, and the first motor and the second motor are located below the two ends of the top plate respectively. The output end of the second motor is connected with a second connecting shaft, the second motor is fixedly connected with the rotating plate through the second connecting shaft, the two opposite sides of the rotating plate are provided with an electric push rod and a moving rod respectively, and the free end of the moving rod is connected with a moving plate. The lamination positioning mechanism disclosed by the utility model not only can position the lithium battery with a regular shape, but also can position the special-shaped lithium battery, and can be adjusted according to the specification of the lithium battery, so that the application range of the lamination device is widened.

Description

Technical Field

[0001] This utility model belongs to the field of lithium battery stacking positioning technology, specifically relating to a soft-pack lithium battery stacking positioning mechanism. Background Technology

[0002] The statements herein provide only background information related to this invention and do not necessarily constitute prior art.

[0003] In the manufacturing process of pouch lithium batteries, stacking is a crucial step that directly affects the cell's performance, safety, and production cost. Stacking involves precisely stacking key materials such as the positive electrode, negative electrode, and separator in a predetermined order and position to form the basic structure of the cell. This process places extremely high demands on parameters such as material positioning accuracy, stacking order, and stacking pressure. Traditional stacking processes rely heavily on manual labor. To improve stacking efficiency, automated equipment has emerged. During automated stacking, a positioning mechanism is needed to ensure stable stacking of the batteries. However, the inventors discovered that existing battery stacking positioning devices still have some technical problems, such as:

[0004] A battery stacking positioning device, patent application number CN212303735U, achieves secondary positioning of the electrode group located at the bottom through a positioning groove, positions the electrode tabs on one side of the electrode group through a second fastening bolt and a positioning plate, and fixes and presses the two ends of the electrode group and the electrode tabs through a pressure plate, pressure block, positioning seat, first fastening bolt and positioning groove. The current collector is positioned and fixed through the positioning plate, groove and magnet. Although this device can position batteries, in practical use it can only be used for positioning batteries with regular shapes and cannot be applied to irregularly shaped batteries, therefore it can only be used in fixed application scenarios.

[0005] Similarly, a lithium battery cell stacking positioning platform with patent application number CN216958161U uses a servo motor to drive a cam mechanism, which in turn drives a lifting mechanism to move up and down reciprocally. While stacking the cells, the lifting mechanism pushes the first positioning component and the second positioning component to move laterally and longitudinally along the side of the cell tray, respectively, so that the edges of the lithium battery cell electrodes are neat when stacked. This device is the same as the one mentioned above. In use, it can only be used for positioning batteries with regular shapes and cannot be used for irregularly shaped batteries. Therefore, it can only be used in fixed application scenarios and has a limited scope of application. Utility Model Content

[0006] The purpose of this invention is to provide a pouch lithium battery stacking and positioning mechanism that can be adjusted according to the specifications of the lithium battery to achieve the positioning of irregularly shaped lithium batteries and increase the applicability of the stacking mechanism.

[0007] A pouch lithium battery stacking positioning mechanism includes: a support member and a positioning member;

[0008] The support member is a support ring, and multiple evenly distributed positioning members are fixed on the support ring;

[0009] The positioning component includes a first motor and a second motor, with a top plate between the first motor and the second motor, and the first motor and the second motor are respectively located below the two ends of the top plate; the output end of the second motor is connected to a second connecting shaft, and the second motor is fixedly connected to the rotating plate through the second connecting shaft; electric push rods and moving rods are respectively provided on opposite sides of the rotating plate, and a moving plate is connected to the free end of the moving rod.

[0010] As a further technical solution, the output end of the first motor is connected to a first connecting shaft, and the free end of the first connecting shaft passes through the support ring upward.

[0011] As a further technical solution, the top end of the first connecting shaft is fixedly connected to the second motor via a top plate.

[0012] As a further technical solution, the second motor is fixedly connected to the rotating plate via a second connecting shaft. Specifically, the free end of the second connecting shaft passes upward through the top plate and is fixedly connected to the rotating plate.

[0013] As a further technical solution, the support ring is circular in shape, specifically, a through hole is formed along the axis of the support ring.

[0014] As a further technical solution, a suction cup is provided at the bottom of the support ring.

[0015] As a further technical solution, the positioning elements are placed at intervals on the suction cup.

[0016] As a further technical solution, the suction cup is fixedly connected to the bottom of the first motor in the positioning component.

[0017] As a further technical solution, the bottom of the suction cup is recessed to form a negative pressure cavity.

[0018] As a further technical solution, an arc-shaped pad is adhered to the side of the movable plate away from the movable rod.

[0019] The beneficial effects of one or more of the above technical solutions:

[0020] This invention provides a positioning mechanism for stacking soft-pack lithium batteries, including a support member and positioning members. The positioning members include a first motor and a second motor. The first motor drives a top plate to rotate; subsequently, the second motor drives a rotating plate and a moving plate to rotate around the top plate, finely adjusting the angle of the moving plate. After fine-tuning, an electric push rod is driven to sequentially move the moving rod and the moving plate until the moving plate moves the arc-shaped pad against the outside of the lithium battery. Thus, the arc-shaped pads on multiple evenly distributed positioning members firmly hold the lithium battery in place. Simultaneously, each positioning member is independent, meaning each member can be advanced to different lengths depending on the actual situation. Therefore, this invention can be adjusted according to the specifications of the lithium battery, achieving positioning of irregularly shaped lithium batteries and increasing the applicability of the stacking mechanism. Attached Figure Description

[0021] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute a limitation thereof.

[0022] Figure 1 This is a schematic diagram of the overall structure of a soft-pack lithium battery stacking positioning mechanism according to an embodiment of the present invention.

[0023] Figure 2 This is a bottom view of the overall structure of a soft-pack lithium battery stacking positioning mechanism according to an embodiment of the present invention.

[0024] Figure 3 This is a schematic diagram of the support ring in an embodiment of the present invention.

[0025] Figure 4 This is a schematic diagram of the support member in an embodiment of the present utility model.

[0026] Figure 5 This is a first-view schematic diagram of the overall structure of the positioning component in an embodiment of this utility model.

[0027] Figure 6 This is a second-view schematic diagram of the overall structure of the positioning component in an embodiment of this utility model.

[0028] Figure 7 This is a third-view schematic diagram of the overall structure of the positioning component in an embodiment of this utility model.

[0029] In the figure, 1 is the support component; 11 is the suction cup; 12 is the through hole; 13 is the support ring; 14 is the negative pressure chamber; 2 is the positioning component; 21 is the first motor; 22 is the first connecting shaft; 23 is the top plate; 24 is the second motor; 25 is the moving plate; 26 is the arc-shaped pad; 27 is the moving rod; 28 is the rotating plate; and 29 is the electric push rod. Detailed Implementation

[0030] The specific implementation of this embodiment will now be described with reference to the accompanying drawings.

[0031] Reference Figures 1-4 This utility model embodiment provides a soft-pack lithium battery stacking positioning mechanism, including: a support member 1 and a positioning member 2; wherein, the support member 1 is a support ring 13, and a plurality of evenly distributed positioning members 2 are fixed on the support ring 13.

[0032] Furthermore, the support ring 13 is circular in shape, and specifically, a through hole 12 is provided along the axis of the support ring 13; the through hole 12 provides space for fixing the battery stack, that is, when positioning the battery stack, the battery stack is placed in the through hole 12.

[0033] Furthermore, a suction cup 11 is provided at the bottom of the support ring 13, and the positioning components 2 are placed at intervals on the suction cup 11, that is, the suction cup 11 is fixedly connected to the bottom of the first motor 21 in the positioning component 2. Specifically, N independently operable positioning components 2 are arranged in a circular array at equal intervals on the support component 1, where N≥3, and a positioning space for positioning the lithium battery is formed between the support component 1 and the N positioning components 2; more specifically, the multiple suction cups 11 at the bottom of the support ring 13 are also arranged at equal intervals, and the number of suction cups is twice the number of positioning components.

[0034] Furthermore, the bottom of the suction cup 11 is recessed to form a negative pressure cavity 14. When fixing the battery stack, the negative pressure cavity 14 formed by the suction cup 11 can adsorb the support member 1 onto other objects, thereby fixing the support ring 13 at the position required by the personnel.

[0035] Reference Figures 5-7 The positioning component 2 includes a first motor 21 and a second motor 24, with a top plate 23 positioned between the first motor 21 and the second motor 24. The first motor 21 and the second motor 24 are located below both ends of the top plate 23. Specifically, the output end of the first motor 21 is connected to a first connecting shaft 22, the free end of which passes upward through a support ring 13. The top end of the first connecting shaft 22 is fixedly connected to the second motor 24 via the top plate 23. Therefore, when battery stacking positioning is required, the first motor 21 drives the first connecting shaft to rotate, which in turn causes the top plate to rotate left and right, i.e., the second motor and the top plate rotate relative to the first motor.

[0036] The output end of the second motor 24 is connected to a second connecting shaft. The second motor 24 is fixedly connected to the rotating plate 28 via the second connecting shaft. Specifically, the free end of the second connecting shaft extends upward through the top plate 23 and is fixedly connected to the rotating plate 28. Therefore, when battery stacking and positioning are required, the second motor 24 drives the second connecting shaft to rotate, which in turn drives the rotating plate to rotate left and right. That is, the second motor drives the rotating plate and the moving plate to rotate relative to the top plate.

[0037] Furthermore, the first motor 21 has a larger power and is used for large-amplitude rotation; while the second motor 24 has a relatively smaller power and is used for secondary fine-tuning of the angle after the position adjustment by the first motor 21.

[0038] Reference Figure 6 The rotating plate 28 is provided with an electric push rod 29 and a moving rod 27 on opposite sides, and a moving plate 25 is connected to the free end of the moving rod 27; the electric push rod 29 is used to drive the moving rod to move back and forth.

[0039] Reference Figure 7 The movable plate 25 has an arc-shaped pad 26 attached to the side away from the movable rod 27, and the arc-shaped pad is used to contact the battery.

[0040] The first motor 21 drives the first connecting shaft 22 and the top plate 23 to rotate, thereby adjusting the position of the rotating plate 28 and the moving plate 25. Then, the second motor 24 drives the second rotating shaft and the rotating plate 28 to rotate, causing the rotating plate 28 to drive the electric push rod 29 and the moving plate 25 to rotate, thereby adjusting the angle of the moving plate 25 so that the moving plate 25 is aligned with the lithium battery. The electric push rod 29 drives the moving rod 27 and the moving plate 25 to move until the moving plate 25 touches the lithium battery. This completes the lithium battery stacking and positioning. The battery stacking mechanism can not only position regularly shaped lithium batteries, but also irregularly shaped lithium batteries, and can be adjusted according to the specifications of the lithium batteries, increasing the applicability of the battery stacking mechanism.

[0041] Working principle:

[0042] When using the device, place the support ring 13 at the desired location, then press the support ring 13 to allow the negative pressure chamber on the suction cup 11 to attract other objects, thus fixing the support ring 13 in the desired location. After the support ring 13 is installed, the first motor 21 operates, driving the first connecting shaft 22 to rotate. The first connecting shaft 22 then drives the top plate 23 to rotate, which in turn drives the second motor 24, the rotating plate 28, the electric push rod 29, and the moving plate 25 to rotate. When the first motor 21 stops rotating... Then, the second motor 24 drives the rotating plate 28 and the moving plate 25 to rotate around the top plate 23, thereby fine-tuning the angle of the moving plate 25. After the angle of the moving plate 25 is adjusted, the electric push rod 29 works, which in turn drives the moving rod 27 to move, and the moving rod 27 drives the moving plate 25 to move until the moving plate 25 drives the arc-shaped pad 26 to contact the outside of the lithium battery. By adjusting all the moving plates 25 according to the above steps, the lithium battery can be positioned, making it easier for operators to stack the lithium batteries.

[0043] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. A soft package lithium battery lamination positioning mechanism, characterized in that, include: Support components and positioning components; The support member is a support ring, and multiple evenly distributed positioning members are fixed on the support ring; The positioning component includes a first motor and a second motor, with a top plate between the first motor and the second motor, and the first motor and the second motor are respectively located below the two ends of the top plate; the output end of the second motor is connected to a second connecting shaft, and the second motor is fixedly connected to the rotating plate through the second connecting shaft; electric push rods and moving rods are respectively provided on opposite sides of the rotating plate, and a moving plate is connected to the free end of the moving rod.

2. The soft-pack lithium battery lamination positioning mechanism of claim 1, wherein, The output end of the first motor is connected to a first connecting shaft, and the free end of the first connecting shaft passes through the support ring upwards.

3. The soft-pack lithium battery lamination positioning mechanism of claim 2, wherein, The top end of the first connecting shaft is fixedly connected to the second motor via a top plate.

4. The soft-pack lithium battery lamination positioning mechanism of claim 1, wherein, The second motor is fixedly connected to the rotating plate via a second connecting shaft. Specifically, the free end of the second connecting shaft passes upward through the top plate and is fixedly connected to the rotating plate.

5. The soft-pack lithium battery lamination positioning mechanism of claim 1, wherein, The support ring is circular in shape, and specifically, a through hole is formed along the axis of the support ring.

6. The soft-pack lithium battery lamination positioning mechanism of claim 1, wherein, The bottom of the support ring is equipped with a suction cup.

7. The soft-pack lithium battery lamination positioning mechanism of claim 6, wherein, The positioning elements are placed at intervals on the suction cup.

8. The soft-pack lithium battery lamination positioning mechanism of claim 7, wherein, The suction cup is fixedly connected to the bottom of the first motor in the positioning component.

9. The soft-pack lithium battery lamination positioning mechanism of claim 7, wherein, The bottom of the suction cup is recessed to form a negative pressure cavity.

10. The soft-pack lithium battery lamination positioning mechanism of claim 1, wherein, The movable plate has an arc-shaped pad adhered to the side away from the movable rod.

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