Anti-deviation guide wheel for winding lithium battery cell

Abstract

The utility model relates to the field of lithium battery production, and discloses an anti-deviation guide wheel for winding a lithium battery cell, which comprises a support table, the left side of the front end of the support table is rotatably connected with an unwinding wheel, the right side of the front end of the support table is rotatably connected with a guide wheel, and the front end of the support table is provided with an electrostatic eliminating mechanism; the static electricity removing mechanism comprises a motor, a supporting block is fixedly connected to the front end of the supporting table, a guiding piece is arranged at the front end of the supporting table, the outer arc face of a rotating column is in transmission connection with a rotating roller through a belt, a static electricity brush is arranged at the bottom end of the rotating column, and an adjusting mechanism is arranged at the front end of a clamping plate. According to the utility model, the motor is started to promote the two groups of static brushes to move horizontally, and when the static brushes move horizontally, the gears and the racks are meshed, so that the static brushes can rotate when moving, static removal operation is carried out on a lithium battery cell, and the offset condition caused by static factors is reduced.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery production technology, and in particular to an anti-deviation guide wheel for winding lithium battery cells. Background Technology

[0002] Lithium-ion battery cells are the core components of lithium-ion batteries. They are the basic units that convert chemical energy into electrical energy and are typically composed of a positive electrode, a negative electrode, a separator, and an electrolyte. To improve energy density, they need to be wound.

[0003] A search revealed Chinese Patent Publication No. CN222088676U, which discloses a fully automatic battery cell winding machine. The machine includes a base with supporting legs fixedly connected to its bottom wall. It also includes: a tensioning component housed within a transmission component; an offset component fixedly connected to the top wall of the base; a guide component fixedly connected to the top wall of the base; an adjustment component fixedly connected to the top wall of the base; and a transmission component located on the top wall of the base. The transmission component includes a motor bracket fixedly connected to the top wall of the base, a drive motor fixedly connected to the top wall of the motor bracket, a pulley assembly fixedly connected to the output end of the drive motor, a support frame fixedly connected to the top wall of the base, a winding seat rotatably connected to the side wall of the support frame, a driven wheel fixedly connected to the side wall of the winding seat, a roller frame fixedly connected to the top wall of the base, and a carrying roller rotatably connected to the inner wall of the roller bracket. The carrying roller and the winding seat cooperate with each other. This invention prevents electrode sheet misalignment during winding and allows for adjustment of the electrode sheet's conveying length at any time.

[0004] While the aforementioned technology offers some improvements, it remains highly susceptible to static electricity interference during the winding process. During the unwinding and transport of the battery cell material, static electricity is inevitably generated due to friction between materials and contact / separation with equipment components. This static electricity attracts dust and impurity particles from the surrounding environment. These impurities adhere to the battery cell surface, altering the force distribution on the cell during winding and preventing it from following the predetermined path and direction, thus causing deviation. Therefore, an anti-deviation guide wheel for lithium battery cell winding is proposed to address this problem. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an anti-deviation guide wheel for winding lithium battery cells, which aims to improve the problem that static electricity can cause deviation when winding lithium battery cells in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a guide wheel for anti-deviation of lithium battery cell winding, comprising a support platform, an unwinding wheel rotatably connected to the left front end of the support platform, a guide wheel rotatably connected to the right front end of the support platform, and an anti-static mechanism provided at the front end of the support platform.

[0007] The static elimination mechanism includes a motor. A support block is fixedly connected to the front end of the support platform. A threaded rod is rotatably connected to the inner wall of the support block. A movable block is threadedly connected to the outer wall of the threaded rod. A rotating column is rotatably connected to the inner wall of the movable block. A gear is fixedly connected to the outer arc surface of the rotating column. A rack is fixedly connected to the front end of the support platform. A clamping plate is rotatably connected to the bottom end of the rotating column. A guide is provided at the front end of the support platform. A rotating roller is connected to the outer arc surface of the rotating column via a belt drive. An electrostatic brush is provided at the bottom end of the rotating column. An adjustment mechanism is provided at the front end of the clamping plate.

[0008] As a further description of the above technical solution:

[0009] The guide component includes a guide plate, the rear end of which is fixedly connected to the front end of the support platform, and the rear inner wall of the clamping plate is slidably connected to the outer wall of the guide plate.

[0010] As a further description of the above technical solution:

[0011] The rear end of the gear meshes with the front end of the rack, and the inner wall of the movable block is slidably connected to the rear end of the rack.

[0012] As a further description of the above technical solution:

[0013] The base of the motor is fixedly connected to the front end of the support platform, and the outer arc surface of the rotating roller is rotatably connected to the inner wall of the clamping plate.

[0014] As a further description of the above technical solution:

[0015] The output end of the motor is fixedly connected to the right end of the threaded rod.

[0016] As a further description of the above technical solution:

[0017] The adjustment mechanism includes a positioning plate, the rear end of which is fixedly connected to the front end of the clamping plate. A bidirectional threaded rod is rotatably connected to the inner wall of the positioning plate. A moving block is threadedly connected to the outer wall of the bidirectional threaded rod. A support hook is fixedly connected to the outer wall of the moving block. A circular plate is in contact with the outer wall of the support hook.

[0018] As a further description of the above technical solution:

[0019] The positioning plate is provided in two sets, and the two sets of positioning plates are fixedly connected by positioning columns. The inner wall of the moving block is slidably connected to the outer arc surface of the positioning columns.

[0020] As a further description of the above technical solution:

[0021] The side of the circular plate away from the threaded surface of the bidirectional threaded rod is fixedly connected to the bottom end of the rotating column, and the side of the circular plate near the threaded surface of the bidirectional threaded rod is fixedly connected to the outer wall of the electrostatic brush.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, through the cooperation between the supporting platform, unwinding wheel, guide wheel and its static elimination mechanism, the motor is started to cause the two sets of static brushes to move horizontally. When the static brushes move horizontally, due to the meshing of the gear and rack, the static brushes will also rotate during the movement, thereby performing static elimination on the lithium battery cell and reducing the occurrence of displacement due to static factors.

[0024] 2. In this utility model, through the mutual cooperation between the set adjustment mechanism and other structures, when the thickness of the lithium battery cell changes, the bidirectional threaded rod can be rotated to cause the electrostatic brush to move closer or further apart, so as to better adapt to cells of different thicknesses and enhance the flexibility of the overall device. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of an anti-deviation guide wheel for winding lithium battery cells proposed in this utility model;

[0026] Figure 2 This is a cross-sectional internal schematic diagram of the movable block of an anti-deviation guide wheel for winding lithium battery cells proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the internal cross-section of the clamp plate of the anti-deviation guide wheel for winding lithium battery cells proposed in this utility model;

[0028] Figure 4 This is a three-dimensional schematic diagram of the positioning post of an anti-deviation guide wheel for winding lithium battery cells proposed in this utility model.

[0029] Figure 5 This invention relates to a support hook and its circular plate for an anti-deviation guide wheel used in the winding of lithium battery cells.

[0030] Legend:

[0031] 1. Support platform; 2. Unwinding roller; 3. Guide roller; 4. Static elimination mechanism; 401. Motor; 402. Support block; 403. Movable block; 404. Gear; 405. Rack; 406. Guide plate; 407. Clamping plate; 408. Rotating column; 409. Belt; 410. Rotating roller; 411. Static brush; 412. Threaded rod; 5. Adjustment mechanism; 501. Positioning plate; 502. Bidirectional threaded rod; 503. Moving block; 504. Positioning column; 505. Support hook; 506. Circular plate. Detailed Implementation

[0032] 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.

[0033] Reference Figures 1-2 This utility model provides an embodiment of an anti-deviation guide wheel for winding lithium battery cells, including a support platform 1. An unwinding wheel 2 is rotatably connected to the left front end of the support platform 1, which unwinds the lithium battery cells. A guide wheel 3 is rotatably connected to the right front end of the support platform 1, which winds the lithium battery cells. The unwinding wheel 2 and guide wheel 3 are existing technologies and will not be explained in detail here. An antistatic mechanism 4 is provided at the front end of the support platform 1; the antistatic mechanism 4 is used to remove static electricity from the lithium battery cells, thereby reducing dust adhesion and achieving an anti-deviation effect.

[0034] Reference Figures 2-3The static eliminator 4 includes a motor 401. A support block 402 is fixedly connected to the front end of the support platform 1. A threaded rod 412 is rotatably connected to the inner wall of the support block 402. Two sets of support blocks 402 are provided to support the threaded rod 412. A movable block 403 is threadedly connected to the outer wall of the threaded rod 412. The rotation of the threaded rod 412 drives the movable block 403 to move horizontally. A rotating column 408 is rotatably connected to the inner wall of the movable block 403. A gear 404 is fixedly connected to the outer arc surface of the rotating column 408. The rotation of the gear 404 drives the rotating column 408 to rotate. A rack 405 is fixedly connected to the front end of the support platform 1. The rack 405 is concave in shape. A clamping plate 407 is rotatably connected to the bottom end of the 408. The clamping plate 407 is concave. A guide is provided at the front end of the support platform 1. The guide is designed to prevent the clamping plate 407 from swinging or rotating when it moves. The outer arc surface of the rotating column 408 is connected to a rotating roller 410 via a belt 409. The rotation of the rotating column 408 drives the rotating roller 410 to rotate synchronously. An electrostatic brush 411 is provided at the bottom end of the rotating column 408. The electrostatic brush 411 is used to remove static electricity from the lithium battery cell. Two sets of electrostatic brushes 411 are provided. An adjustment mechanism 5 is provided at the front end of the clamping plate 407. The adjustment mechanism 5 is used to remove static electricity from lithium battery cells of different thicknesses.

[0035] Reference Figures 2-3 The guide component includes a guide plate 406, the rear end of which is fixedly connected to the front end of the support platform 1. The support platform 1 provides support for the guide plate 406. The inner wall of the rear end of the clamping plate 407 is slidably connected to the outer wall of the guide plate 406. The guide plate 406 is concave and has a certain gap between it and the support platform 1. The rear end of the gear 404 meshes with the front end of the rack 405. The meshing of the two allows the rotating column 408 to rotate when it moves horizontally. The inner wall of the movable block 403 is slidably connected to the rear end of the rack 405. At the end, the front tooth surface of the rack 405 does not contact the inner wall of the movable block 403, while the rear plane contacts the inner wall of the movable block 403. The base of the motor 401 is fixedly connected to the front end of the support platform 1. The motor 401 is located on the right side of the right support block 402. The outer arc surface of the rotating roller 410 is rotatably connected to the inner wall of the clamping plate 407. The rotating roller 410 plays a transmission role. The output end of the motor 401 is fixedly connected to the right end of the threaded rod 412. The rotation of the output end of the motor 401 drives the threaded rod 412 to rotate.

[0036] Reference Figures 3-5The adjusting mechanism 5 includes a positioning plate 501. The rear end of the positioning plate 501 is fixedly connected to the front end of the clamping plate 407. Two sets of positioning plates 501 are provided, and the clamping plate 407 provides support for the two sets of positioning plates 501. A bidirectional threaded rod 502 is rotatably connected to the inner wall of the positioning plate 501. A moving block 503 is threadedly connected to the outer wall of the bidirectional threaded rod 502. The rotation of the bidirectional threaded rod 502 drives the two sets of moving blocks 503 to move towards the center. A support hook 505 is fixedly connected to the outer wall of the moving block 503. A circular plate 506 is in contact with the outer wall of the support hook 505. An annular groove matching the support hook 505 is opened on the inner wall of the circular plate 506. The support hook 505 provides support for the circular plate 506, but the circular plate 506 does not interfere with the movement of the support hook 505 when it rotates.

[0037] Reference Figures 2-4 The positioning plates 501 are provided in two sets, and the two sets of positioning plates 501 are fixedly connected by positioning columns 504. The inner wall of the moving block 503 is slidably connected to the outer arc surface of the positioning column 504. The positioning column 504 can guide the moving block 503. The side of the circular plate 506 away from the threaded surface of the bidirectional threaded rod 502 is fixedly connected to the bottom end of the rotating column 408. The side of the circular plate 506 near the threaded surface of the bidirectional threaded rod 502 is fixedly connected to the outer wall of the electrostatic brush 411. When the rotating column 408 rotates, it will drive the electrostatic brush 411 and the circular plate 506 to rotate together. There are two sets of circular plates 506. The two sets of electrostatic brushes 411 can clean the upper and lower sides of the lithium battery cell simultaneously. There are two sets of rotating columns 408. The upper rotating column 408 and the lower rotating column 408 have different lengths, but the other functions are the same.

[0038] Working Principle: The lithium battery cell is placed on the unwinding roller 2. The rotation of the unwinding roller 2 releases the cell material. The cell material passes through the guide roller 3, which initially guides the cell to ensure its basic orientation during transport, preparing it for subsequent processes. The motor 401 is started, and its output drives the threaded rod 412 to rotate. The rotation of the threaded rod 412 drives the movable block 403 to move horizontally along the axial direction of the threaded rod 412. When the movable block 403 moves, the rotating column 408, which is rotatably connected to its inner wall, moves synchronously. The gear 404, which is fixedly connected to the outer arc surface of the rotating column 408, meshes with the rack 405, which is fixedly connected to the front end of the support platform 1. When the rotating column 408 moves horizontally, the gear 404 rolls along the rack 405, thereby causing the rotating column 408 to rotate. The rotating column 408 is connected to the rotating roller 410 via a belt 409. The rotation of the rotating column 408 drives the rotating roller 410 to rotate synchronously. The rotating roller 410 rotates within the clamping plate 407, serving as an auxiliary transmission mechanism. An electrostatic brush 411 is installed at the bottom of the rotating column 408. When the rotating column 408 rotates, it drives the electrostatic brush 411 to rotate as well. The electrostatic brush 411 contacts the lithium battery cell, discharging the static charge from the cell surface, thus achieving the static removal operation. Two sets of electrostatic brushes 411 can simultaneously remove static electricity from both the top and bottom sides of the lithium battery cell, effectively reducing the impact of static electricity on the cell winding process and lowering the risk of cell misalignment due to dust adsorption caused by static electricity.

[0039] When static electricity removal is required for lithium battery cells of different thicknesses, the bidirectional threaded rod 502 is rotated. The rotation of the bidirectional threaded rod 502 drives two sets of moving blocks 503 to move towards the center or to the sides. Support hooks 505, fixedly connected to the outer wall of each moving block 503, contact a circular plate 506. An annular groove matching the support hook 505 is formed on the inner wall of the circular plate 506. The support hook 505 supports the circular plate 506, and the rotation of the circular plate 506 does not interfere with the movement of the support hook 505. When the moving block 503 moves, it drives the circular plate 506 to move via the support hook 505, thereby adjusting the distance between the static brush 411 and the battery cell to accommodate the static electricity removal needs of batteries of different thicknesses.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A deviation preventing guide wheel for winding a lithium battery cell, comprising a support table (1), characterized in that: The front end left side of the support table (1) is rotationally connected with a unwinding wheel (2), the front end right side of the support table (1) is rotationally connected with a guide wheel (3), and the front end of the support table (1) is provided with an electrostatic elimination mechanism (4). The electrostatic elimination mechanism (4) comprises a motor (401), the front end of the support table (1) is fixedly connected with a support block (402), the inner wall of the support block (402) is rotationally connected with a threaded rod (412), the outer wall of the threaded rod (412) is threadedly connected with a movable block (403), the inner wall of the movable block (403) is rotationally connected with a rotating column (408), the outer arc surface of the rotating column (408) is fixedly connected with a gear (404), the front end of the support table (1) is fixedly connected with a rack (405), the bottom end of the rotating column (408) is rotationally connected with a clamping plate (407), the front end of the support table (1) is provided with a guide piece, the outer arc surface of the rotating column (408) is drivingly connected with a rotating roller (410) through a belt (409), the bottom end of the rotating column (408) is provided with an electrostatic brush (411), and the front end of the clamping plate (407) is provided with an adjusting mechanism (5).

2. The offset-preventing guide wheel for winding a lithium battery cell according to claim 1, characterized in that: The guide piece comprises a guide plate (406), and the rear end of the guide plate (406) is fixedly connected to the front end of the support table (1).

3. The anti-deviation guide wheel for winding a lithium battery cell according to claim 1, characterized in that: The rear end of the gear (404) is engaged on the front end of the rack (405), and the inner wall of the movable block (403) is slidingly connected to the rear end of the rack (405).

4. The anti-deviation guide wheel for winding a lithium battery cell according to claim 1, characterized in that: The bottom of the motor (401) is fixedly connected to the front end of the support table (1), and the outer arc surface of the rotating roller (410) is rotationally connected to the inner wall of the clamping plate (407).

5. The anti-offset guide wheel for winding a lithium battery cell according to claim 1, characterized in that: The output end of the motor (401) is fixedly connected to the right end of the threaded rod (412).

6. The anti-offset guide wheel for winding a lithium battery cell according to claim 1, characterized in that: The adjusting mechanism (5) comprises a positioning plate (501), the rear end of the positioning plate (501) is fixedly connected to the front end of the clamping plate (407), the inner wall of the positioning plate (501) is rotationally connected with a bidirectional threaded rod (502), the outer wall of the bidirectional threaded rod (502) is threadedly connected with a moving block (503), the outer wall of the moving block (503) is fixedly connected with a support hook (505), and the outer wall of the support hook (505) is in contact with a circular plate (506).

7. The anti-offset guide wheel for winding a lithium battery cell according to claim 6, characterized in that: The positioning plate (501) is provided with two groups, and the two groups of positioning plates (501) are fixedly connected through a positioning column (504), and the inner wall of the moving block (503) is slidingly connected to the outer arc surface of the positioning column (504).

8. The anti-offset guide wheel for winding a lithium battery cell according to claim 6, characterized in that: The side, away from the threaded surface of the bidirectional threaded rod (502), of the circular plate (506) is fixedly connected to the bottom end of the rotating column (408), and the side, close to the threaded surface of the bidirectional threaded rod (502), of the circular plate (506) is fixedly connected to the outer wall of the electrostatic brush (411).

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