Pole piece rolling device for lithium battery production

Abstract

The utility model discloses a pole piece rolling device for lithium battery production, which comprises a base, the top of the base is fixedly connected with a fixed frame I, and the outer side wall of the fixed frame I is fixedly connected with a pair of inclined rods. In the actual use process, the first motor is fixed to the fixing block and drives the two-way threaded rod to rotate, the two-way threaded rod rotates to drive the connecting block to move reversely, the connecting block further pushes the connecting column to move reversely, and the rotating column on the connecting column moves along with the connecting column; the pole piece can smoothly move on the first rotating rod on the inclined plate, the problems of inaccurate positioning and correction of the pole piece in the winding process are solved through precise matching of the assemblies, the position of the pole piece can be automatically corrected through the adjusting function of the two-way threaded rod and the first connecting frame, and it is ensured that the pole piece can stably and accurately move under guiding of the shell and the inclined plate; therefore, the condition of irregularity during winding is avoided, and the pole piece processing precision and efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, in particular to a pole piece rolling device for lithium battery production. Background Art

[0002] A pole piece rolling device for lithium battery production is a device specifically designed for pressing lithium battery pole pieces. In the lithium battery manufacturing process, pole pieces are key components, including positive and negative pole pieces. These pole pieces require a rolling process to ensure their surface flatness and thickness consistency. The working principle of this device is to apply uniform pressure to the pole pieces through one or more pairs of rollers, thereby achieving the purpose of compaction and improving the pole piece performance.

[0003] After searching, the Chinese patent with the announcement number CN215745519U discloses a pole piece rolling device for lithium battery production. The patent records that by setting a slider, a slide groove, a connecting shaft, a transmission plate, a transmission screw, a fixed plate, a fixed frame and a first stepper motor, the upper pressing roller can be adjusted in height conveniently and accurately, and the spacing between the upper pressing roller and the lower pressing roller can be adjusted conveniently and accurately according to the thickness of the pole piece and the thickness of the pole piece to be rolled. It is very practical and solves the problem that the rolling spacing of the existing pole piece rolling device for lithium battery production is difficult to adjust conveniently according to the thickness of the pole piece and the thickness of the pole piece to be rolled. The problem of insufficient practicality; and the utility model is provided with a fixed sleeve and a pressure sensor, and the pressure sensor can sense the downward pressure of the upper pressing roller in real time and provide feedback to the external control device of the device, so that the external control device can adjust the height of the upper pressing roller in real time according to the rolling processing requirements of the pole piece and the feedback data of the pressure sensor, so that the device can roll the lithium battery pole piece with appropriate pressure, ensuring the rolling processing quality of the pole piece, and solving the problem that the existing pole piece rolling device for lithium battery production cannot adjust the rolling pressure in real time according to the pole piece processing requirements, and it is difficult to ensure the rolling processing quality of the pole piece.

[0004] In this solution, although the rolling pressure can be quickly adjusted according to requirements, the device does not have a positioning structure, which causes the electrode to move forward during discharge. As a result, when winding after the pressing is completed, the position of the electrode will change, resulting in the electrode and the winding device being misaligned, resulting in uneven winding, thereby reducing work efficiency. In order to solve this technical problem, the utility model proposes a electrode rolling device for lithium battery production. Utility Model Content

[0005] (1) Technical problems solved

[0006] In this solution, although the rolling pressure can be quickly adjusted according to requirements, the device does not have a positioning structure, which causes the electrode to move forward during discharge. As a result, when winding after the pressing is completed, the position of the electrode will change, resulting in the electrode and the winding device being misaligned, resulting in uneven winding, thereby reducing work efficiency. In order to solve this technical problem, the utility model proposes a electrode rolling device for lithium battery production.

[0007] (2) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a pole piece rolling device for lithium battery production, comprising a base, the top of the base is fixedly connected to a fixing frame 1, the outer side wall of the fixing frame 1 is fixedly connected to a pair of oblique rods, the other end of the oblique rods is fixedly connected to a shell, the top of the shell is fixedly connected to a pair of fixing blocks, the outer wall of the fixing block on one side is fixedly connected to a motor 1, and at the same time, the output end of the motor 1 is fixedly connected to a bidirectional threaded rod, and the outer walls of both ends of the bidirectional threaded rod are threadedly connected to connecting blocks, each of the bottom walls of the connecting blocks is fixedly connected to a connecting column, and the outer side wall of each connecting column is rotatably connected to a rotating column, and the rotating column is slidably connected in the shell, and the outer side wall of the shell is fixedly connected to a pair of oblique plates, and a rotating rod 1 is rotatably connected between the oblique plates on both sides.

[0009] Preferably, the top of the base is fixedly connected to a fixing frame 2, the top of the fixing frame 2 is fixedly connected to a support frame, three sliding rods are slidably connected inside the top of the support frame, the outer wall of each sliding rod is fixedly connected to a limiting ring, and a spring is fixedly connected between the limiting ring and the support frame, and the bottom end of the sliding rod is fixedly connected to a connecting frame 1, and the connecting frame 1 is rotatably connected to a rotating rod 2 inside.

[0010] Preferably, the outer side wall of the second fixing frame is fixedly connected to the second motor, the output end of the second motor is fixedly connected to the first rotating shaft, and the outer side wall of the first rotating shaft is fixedly connected to the winding roller, and the second rotating rod corresponds to the winding roller.

[0011] Preferably, the spring is sleeved on the outer wall of the slide rod, and the slide rod is slidably connected to the inside of the support frame, and the connecting frame is slidably connected to the inside of the support frame.

[0012] Preferably, the outer wall of the fixed frame 1 is fixedly connected to the motor 3, the output end of the motor 3 is fixedly connected to the rotating shaft 2, and the outer wall of the rotating shaft 2 is fixedly connected to the lower pressure roller, and the upper pressure roller is arranged inside the fixed frame 1, and the upper pressure roller corresponds to the lower pressure roller.

[0013] Preferably, an electric push rod is fixedly connected to the top of the fixing frame 1, and the output end of the electric push rod is fixedly connected to the connecting frame 2. At the same time, the upper pressure roller is rotatably connected to the bottom of the connecting frame 2, and a pair of limit rods are fixedly connected to the top of the connecting frame 2, and the limit rods are slidably connected to the fixing frame 1.

[0014] (3) Beneficial effects

[0015] The utility model provides a pole piece rolling device for lithium battery production. It has the following beneficial effects:

[0016] (1) Motor 1 is fixed on the fixed block and drives the bidirectional threaded rod to rotate. The rotation of the bidirectional threaded rod drives the connecting block to move in the opposite direction. The connecting block further pushes the connecting frame 1 to move upward. The connecting block further pushes the connecting column to move in the opposite direction. The rotating column on the connecting column also moves accordingly. Through the movement of the rotating column, the pole piece is guided by the rotating column inside the shell, so that the pole piece moves smoothly on the rotating rod 1 on the inclined plate. The precise coordination of these components solves the problem of inaccurate positioning and correction of the pole piece during the processing process. The adjustment function of the bidirectional threaded rod and the connecting frame 1 can automatically correct the position of the pole piece, ensuring that it moves smoothly and accurately under the guidance of the shell and the inclined plate, thereby avoiding unevenness during winding and improving the accuracy and efficiency of pole piece processing.

[0017] (2) Motor 2 is fixed on the support frame and drives the rotating shaft 1 to rotate. The winding roller on the rotating shaft 1 starts to run under the action of motor 2 to wind up the pole piece. The rotating rod 2 is connected to the spring through the slide bar. When the thickness of the pole piece gradually increases, the rotating rod 2 will move up with the increase of thickness, pushing the slide bar to move upward, thereby tightening the spring. The rebound force of the spring increases the pressure on the rotating rod 2, prompting the pole piece to be wound more tightly on the winding roller. This coordination solves the problem of loose pole piece winding in the existing device and ensures that the pole piece always remains tight during the winding process, thereby improving the winding quality and work efficiency.

[0018] (3) Motor 3 is installed on fixed frame 1, driving rotating shaft 2 to rotate. Rotating shaft 2 is connected to the lower pressure roller, and the downward pressure of the electrode is achieved through its rotation. The electric push rod is connected to the connecting frame 2. The up and down movement of the upper pressure roller is controlled by adjusting the position of the electric push rod, thereby achieving the pressing of electrode sheets of different thicknesses. The limit rod is fixed on fixed frame 1, providing precise positioning support for the electric push rod and the upper pressure roller, ensuring that the upper pressure roller always maintains a stable pressure during the movement. The adjustment mechanism of the electric push rod can change the pressure of the upper pressure roller as needed, so that it cooperates with the lower pressure roller to achieve effective extrusion and pressing of the electrode sheet. This precise coordination solves the problem of uneven electrode sheet pressing in the existing device. By dynamically adjusting the pressure of the upper pressure roller, it is ensured that the electrode sheet reaches a consistent thickness and quality during the pressing process, thereby improving the overall production stability and product uniformity. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the overall top view of the structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the internal structure of the shell of the utility model;

[0022] Figure 4 This is a schematic diagram of the top structure of the second fixing frame of the utility model.

[0023] In the figure: 1. Base; 2. Fixed frame 1; 3. Inclined rod; 4. Fixed block; 5. Motor 1; 6. Bidirectional threaded rod; 7. Connecting block; 8. Connecting frame 1; 9. Connecting column; 10. Rotating column; 11. Housing; 12. Inclined plate; 13. Rotating rod 1; 14. Fixed frame 2; 15. Support frame; 16. Sliding rod; 17. Limiting ring; 18. Spring; 19. Rotating rod 2; 20. Motor 2; 21. Rotating shaft 1; 22. Winding roller; 23. Motor 3; 24. Rotating shaft 2; 25. Lower pressure roller; 26. Electric push rod; 27. Connecting frame 2; 28. Upper pressure roller; 29. ​​Limiting rod. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0025] See also Figure 1-4 , the utility model provides a technical solution:

[0026] Embodiment 1: A pole piece rolling device for lithium battery production includes a base 1, a fixing frame 2 is fixedly connected to the top of the base 1, a pair of inclined rods 3 are fixedly connected to the outer wall of the fixing frame 2, the other end of the inclined rod 3 is fixedly connected to the shell 11, a pair of fixed blocks 4 are fixedly connected to the top of the shell 11, a motor 5 is fixedly connected to the outer wall of one side of the fixing block 4, and a two-way threaded rod 6 is fixedly connected to the output end of the motor 5, and the outer walls of both ends of the two-way threaded rod 6 are threadedly connected to the connecting blocks 7, each connecting block 7 is fixedly connected to the bottom wall of each connecting block 7, each connecting column 9 is rotatably connected to the outer wall of the connecting column 9, and the rotating column 10 is slidably connected in the shell 11, a pair of inclined plates 12 are fixedly connected to the outer wall of the shell 11, and a rotating rod 13 is rotatably connected between the inclined plates 12 on both sides.

[0027] The pole piece after rolling will be transported through the outer shell 11 on the inclined rod 3. At this time, the motor 15 outside the fixed block 4 is started, and the motor 15 drives the bidirectional threaded rod 6 to rotate. The rotation of the bidirectional threaded rod 6 drives the connecting blocks 7 at both ends to move in the opposite direction. The movement of the connecting block 7 further pushes the rotating column 10 on the connecting column 9, causing the rotating columns 10 on both sides to move in the opposite direction. This reverse movement corrects the pole piece so that it moves smoothly under the guidance of the rotating rod 13 on the inclined plate 12. Through this series of movements and coordination, the device can achieve precise correction and positioning of the pole piece, prevent the problem of unevenness of the pole piece in the subsequent winding process, thereby ensuring the neatness and quality of the winding.

[0028] Embodiment 2: The difference between this embodiment and embodiment 1 is that, the top of the base 1 is fixedly connected to a fixing frame 2 14, the top of the fixing frame 2 14 is fixedly connected to a support frame 15, and three sliding rods 16 are slidably connected to the top of the support frame 15. The outer wall of each sliding rod 16 is fixedly connected to a limiting ring 17, and a spring 18 is fixedly connected between the limiting ring 17 and the support frame 15. At the same time, the bottom end of the sliding rod 16 is fixedly connected to a connecting frame 1 8, and the connecting frame 1 8 is rotatably connected to a rotating rod 2 19 inside. The outer wall of the fixing frame 2 14 is fixedly connected to a motor 2 20, and the output end of the motor 20 is fixedly connected to a rotating shaft 1 21. At the same time, the outer wall of the rotating shaft 1 21 is fixedly connected to a winding roller 22, and the rotating rod 2 19 corresponds to the winding roller 22. The spring 18 is sleeved on the outer wall of the sliding rod 16. At the same time, the sliding rod 16 is slidably connected to the inside of the support frame 15, and the connecting frame 1 8 is slidably connected inside the support frame 15.

[0029] When the motor 20 on the fixed frame 2 14 is started, the motor 20 drives the winding roller 22 on the rotating shaft 1 21 to start rotating, thereby winding the pole piece. During this process, the pole piece moves downward through the rotating rod 2 19. When the thickness of the pole piece gradually increases, the rotating rod 2 19 will rise and move upward through the connecting frame 1 8. The upward movement of the connecting frame 1 8 will tighten the spring 18 between the support frame 15 and the limit ring 17, so that the rebound force of the spring 18 increases the pressure on the rotating rod 2 19. The increased pressure further prompts the pole piece to be tightly wound on the winding roller 22, thereby preventing the pole piece from becoming loose during the winding process. This precise pressure adjustment mechanism not only ensures the tight winding of the pole piece, but also significantly improves work efficiency and winding quality.

[0030] Embodiment 3: This embodiment differs from Embodiment 1 and Embodiment 2 in that, the outer side wall of the fixed frame 2 is fixedly connected to a motor 3 23, the output end of the motor 3 23 is fixedly connected to a rotating shaft 24, and the outer side wall of the rotating shaft 24 is fixedly connected to a lower pressure roller 25, an upper pressure roller 28 is provided inside the fixed frame 2, the upper pressure roller 28 corresponds to the lower pressure roller 25, an electric push rod 26 is fixedly connected to the top of the fixed frame 2, the output end of the electric push rod 26 is fixedly connected to a connecting frame 2 27, and at the same time, the upper pressure roller 28 is rotatably connected to the bottom of the connecting frame 2 27, a pair of limit rods 29 are fixedly connected to the top of the connecting frame 27, and the limit rods 29 are slidably connected in the fixed frame 2.

[0031] When the electrode is placed on the lower pressure roller 25, the electric push rod 26 on the top of the fixed frame 1 2 is started. At this time, the electric push rod 26 moves the connecting frame 2 27 downward, and the connecting frame 2 27 ensures that the movement range is limited under the action of the limit rod 29. As the connecting frame 2 27 moves downward, the upper pressure roller 28 is also pressed down. At this time, the gap between the upper pressure roller 28 and the lower pressure roller 25 can be precisely adjusted according to the thickness of the electrode to accommodate electrode sheets of different thicknesses. Next, the motor 3 23 is started, which rotates the lower pressure roller 25 by turning the rotating shaft 2 24. The rotation of the lower pressure roller 25 cooperates with the upper pressure roller 28 to complete the rolling operation of the electrode. The precise coordination of this system makes it possible to quickly and accurately adjust the rolling gap when processing electrode sheets of different thicknesses, thereby realizing an efficient and flexible electrode sheet rolling process, significantly improving the convenience of operation and processing accuracy.

[0032] Working principle: the electrode for lithium battery production is placed on the lower pressure roller 25, and then the electric push rod 26 on the top of the fixed frame 2 is started. Under the action of the electric push rod 26, the connecting frame 2 27 is driven to move downward, and the connecting frame 2 27 is limited by the limit rod 29, and the upper pressure roller 28 is driven to move downward through the connecting frame 27 to adjust according to the thickness of the electrode. At this time, the motor 3 23 is started again, and the rotating shaft 24 is driven to rotate under the action of the motor 3 23. The rotation of the rotating shaft 24 will drive the lower pressure roller 25 to rotate, and cooperate with the upper pressure roller 28 to roll the electrode. Through their cooperation, rapid adjustment is achieved when rolling electrode sheets of different thicknesses. The rolled electrode passes through the outer shell 11 on the inclined rod 3, and the motor 1 5 outside the fixed block 4 is started. Under the action of the motor 1 5, the bidirectional threaded rod 6 is driven to rotate. When the bidirectional threaded rod 6 rotates, it will drive the connecting blocks 7 at both ends to move in opposite directions, and the movement of the connecting block 7 will drive the connecting column 9 The rotating column 10 on the upper part moves, and the pole piece will be corrected when the rotating columns 10 on both sides move in opposite directions. The pole piece moves through the rotating rod 13 on the inclined plate 12, and through the cooperation between them, the pole piece is quickly corrected and positioned, thereby preventing unevenness during later winding and ensuring the neatness during winding. By starting the motor 20 on the fixed frame 21, the winding roller 22 on the rotating shaft 1 is driven to rotate under the action of the motor 20, and the winding is carried out through the winding roller 22. At this time, the pole piece will move down through the rotating rod 219. When the thickness gradually increases, the rotating rod 21 will move up, and the rotating rod 219 will move upward through the connecting frame 18. When the connecting frame 18 moves upward, it will pull the spring 18 between the support frame 15 and the limit ring 17. The resilience of the spring 18 will prompt the rotating rod 219 to increase the pressure on the pole piece, thereby making the pole piece tighter on the winding roller 22, avoiding looseness during winding, and improving work efficiency.

[0033] It should be noted that, in this document, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

Claims

1. A pole piece rolling device for lithium battery production, characterized by: The invention comprises a base (1), wherein the top of the base (1) is fixedly connected to a fixing frame (2), the outer side wall of the fixing frame (2) is fixedly connected to a pair of inclined rods (3), the other end of the inclined rods (3) is fixedly connected to a shell (11), the top of the shell (11) is fixedly connected to a pair of fixing blocks (4), the outer wall of the fixing block (4) on one side is fixedly connected to a motor (5), and the output end of the motor (5) is fixedly connected to a bidirectional threaded rod (6), and the outer walls of both ends of the bidirectional threaded rod (6) are threadedly connected to connecting blocks (7), the bottom wall of each connecting block (7) is fixedly connected to a connecting column (9), the outer side wall of each connecting column (9) is rotatably connected to a rotating column (10), and the rotating column (10) is slidably connected in the shell (11), the outer side wall of the shell (11) is fixedly connected to a pair of inclined plates (12), and a rotating rod (13) is rotatably connected between the inclined plates (12) on both sides.

2. The pole piece rolling device for lithium battery production according to claim 1, characterized in that: The top of the base (1) is fixedly connected to a second fixing frame (14), the top of the second fixing frame (14) is fixedly connected to a support frame (15), the top of the support frame (15) is internally slidably connected to three slide rods (16), the outer side wall of each slide rod (16) is fixedly connected to a limiting ring (17), and a spring (18) is fixedly connected between the limiting ring (17) and the support frame (15), and the bottom end of the slide rod (16) is fixedly connected to a first connecting frame (8), and the first connecting frame (8) is internally rotatably connected to a second rotating rod (19).

3. The pole piece rolling device for lithium battery production according to claim 2, characterized in that: The outer wall of the second fixed frame (14) is fixedly connected to the second motor (20), the output end of the second motor (20) is fixedly connected to the first rotating shaft (21), and the outer wall of the first rotating shaft (21) is fixedly connected to the winding roller (22), and the second rotating rod (19) corresponds to the winding roller (22).

4. The pole piece rolling device for lithium battery production according to claim 3, characterized in that: The spring (18) is sleeved on the outer wall of the slide rod (16), and the slide rod (16) is slidably connected to the inside of the support frame (15), and the connecting frame (8) is slidably connected to the inside of the support frame (15).

5. The pole piece rolling device for lithium battery production according to claim 1, characterized in that: The outer wall of the fixed frame 1 (2) is fixedly connected to the motor 3 (23), the output end of the motor 3 (23) is fixedly connected to the rotating shaft 2 (24), and the outer wall of the rotating shaft 2 (24) is fixedly connected to the lower pressure roller (25), and an upper pressure roller (28) is provided inside the fixed frame 1 (2), and the upper pressure roller (28) corresponds to the lower pressure roller (25).

6. The pole piece rolling device for lithium battery production according to claim 1, characterized in that: The top of the fixed frame 1 (2) is fixedly connected to an electric push rod (26), and the output end of the electric push rod (26) is fixedly connected to the connecting frame 2 (27). At the same time, the upper pressure roller (28) is rotatably connected to the bottom of the connecting frame 2 (27). The top of the connecting frame 2 (27) is fixedly connected to a pair of limiting rods (29), and the limiting rods (29) are slidably connected in the fixed frame 1 (2).

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