A lithium battery electrode coating edge positioning device

Abstract

This utility model relates to the field of lithium battery electrode coating and discloses a lithium battery electrode coating edge positioning device, including a concave block. A guide shaft is rotatably mounted on the inner side of the concave block. Two movable structures are provided at the bottom of the concave block. A connecting block is fixedly installed at one end of each of the two movable structures. Two edge guide shafts are installed at the ends of the two connecting blocks that are close to each other. The device achieves high positioning accuracy and effectively ensures coating quality. A positioning gap is formed by the symmetrically arranged edge guide shafts on both sides. After the electrode edge is embedded in the gap, it can be stably limited, preventing lateral displacement of the electrode due to tension fluctuations, equipment vibration, etc. during high-speed transport. This ensures that the coating area in the middle of the electrode remains regular and the width of the blank area at the edge is uniform. This completely solves the problems of coating area misalignment and slurry overflow to the edge in traditional positioning methods, improving the consistency and reliability of lithium battery products.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery electrode coating, specifically to a lithium battery electrode coating edge positioning device. Background Technology

[0002] As a core component of lithium batteries, the coating quality of lithium battery electrodes directly affects the battery's energy density, cycle life, and safety performance. In the electrode coating process, it is usually only necessary to coat the electrode evenly and at equal intervals in the central area, while leaving blanks on both sides to avoid risks such as electrode short circuits and electrolyte leakage during subsequent assembly. Therefore, the precise positioning and guidance of the electrode edges is a key step in ensuring coating accuracy.

[0003] Traditional electrode coating edge positioning methods often employ fixed-spacing guide structures or rely on manual adjustment of the positioning component spacing. Fixed-spacing structures cannot accommodate the width differences of electrodes of different specifications, resulting in poor versatility; manual adjustment methods are not only inefficient but also prone to insufficient positioning accuracy due to operational errors, causing problems such as electrode edge misalignment and coating area misalignment, which in turn affect the consistency and reliability of lithium batteries.

[0004] Meanwhile, during high-speed transport, the electrode sheet is susceptible to lateral displacement or wrinkling due to factors such as tension fluctuations and equipment vibration. If the stability of the positioning and guiding structure is insufficient, it will further aggravate the electrode sheet posture deviation, resulting in uneven width of the blank area at the edge, and even the coating slurry overflowing to the edge. In severe cases, it needs to be scrapped, increasing production costs. To address this, we have proposed a lithium battery electrode sheet coating edge positioning device. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a lithium battery electrode coating edge positioning device, which solves the aforementioned problems.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solution: a lithium battery electrode coating edge positioning device, comprising a concave block, a guide shaft rotatably mounted on the inner side of the concave block, two movable structures provided at the bottom of the concave block, a connecting block fixedly mounted at one end of each of the two movable structures, and two edge guide shafts mounted at the ends of the two connecting blocks that are close to each other.

[0007] Preferably, the bottom of the concave block is integrally formed with an L-shaped protrusion with an L-shaped cross-section, and the movable structure is disposed on the L-shaped protrusion.

[0008] Preferably, the moving structure includes a motor structure and a slide table, the motor structure is mounted on the slide table, the slide table is slidably mounted on the L-shaped protrusion, and the slide table is fixedly connected to the connecting block.

[0009] Preferably, the L-shaped protrusion has a T-shaped groove, and the slide has a T-shaped protrusion integrally formed at the position corresponding to the T-shaped groove, and the T-shaped protrusion and the T-shaped groove are slidably engaged together.

[0010] Preferably, the inner side of the L-shaped protrusion is integrally formed with multiple sets of teeth at equal intervals, and the motor structure meshes with the multiple sets of teeth.

[0011] Preferably, the motor structure includes a motor and gears. The motor is fixedly mounted on a slide, and the gear is fixedly mounted on one end of the motor's rotating shaft through the slide. The gear meshes with multiple sets of teeth.

[0012] Compared with the prior art, this utility model provides a lithium battery electrode coating edge positioning device, which has the following beneficial effects:

[0013] The beneficial effects of this lithium battery electrode coating edge positioning device are as follows:

[0014] High positioning accuracy effectively ensures coating quality. A positioning gap is formed by symmetrically arranged edge guide shafts on both sides. Once the electrode edge is embedded in the gap, it is stably positioned, preventing lateral displacement of the electrode due to tension fluctuations and equipment vibration during high-speed transport. This ensures that the coating area in the center of the electrode remains regular, and the width of the blank area at the edge is uniform. This completely solves the problems of coating area misalignment and slurry overflow to the edges in traditional positioning methods, improving the consistency and reliability of lithium battery products.

[0015] It is highly versatile and adaptable to the processing of various electrode sizes. Utilizing a moving structure driven by a motor and meshing gears, the spacing of the guide shafts on both sides can be flexibly adjusted, enabling it to quickly adapt to lithium battery electrode sizes of different widths without the need to replace dedicated positioning components. Compared to traditional fixed-spacing structures or manual adjustment methods, this significantly expands the applicability of the equipment and reduces equipment debugging and time costs when producing multiple sizes.

[0016] Stable and reliable operation, reducing electrode damage. The device uses an integrated molded concave block and L-shaped protrusion as the load-bearing base, combined with the precise sliding fit of the T-slot and T-shaped protrusion, to ensure smooth and unbiased movement of the slide table driving the edge guide shaft, and uniform stress on the structure; at the same time, the rotation design of the guide shaft and the edge guide shaft can reduce the friction during the electrode conveying process, avoid problems such as scratches on the electrode surface and edge wrinkles, and ensure the integrity of the electrode.

[0017] High degree of automation improves production efficiency. The positioning spacing is automatically adjusted via a motor, eliminating the need for manual operation. This not only reduces the labor intensity of operators but also avoids errors caused by manual adjustments, significantly shortening equipment debugging time. It adapts to the high-speed operation requirements of automated coating production lines, effectively improving overall production efficiency.

[0018] The structural design is simple and reasonable, and maintenance is convenient. The connections between the components are solid, the transmission links are clear, and there are no complex and redundant structures. This reduces the manufacturing difficulty and cost of the equipment, facilitates daily inspection, maintenance, and component replacement, reduces equipment downtime for maintenance, and ensures the continuity of the production process. Attached Figure Description

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

[0020] Figure 2 This is a side view of the present invention;

[0021] Figure 3 for Figure 2 AA section view diagram;

[0022] Figure 4 for Figure 3 A magnified view of part B in the diagram.

[0023] In the diagram: 1. Concave block; 2. Guide shaft; 3. Connecting block; 4. Edge guide shaft; 5. L-shaped protrusion; 6. T-slot; 7. Slide table; 8. T-shaped protrusion; 9. Motor; 10. Gear; 11. Teeth. Detailed Implementation

[0024] 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.

[0025] Please see Figure 1-4 A lithium battery electrode coating edge positioning device includes a concave block 1, a guide shaft 2 rotatably mounted on the inner side of the concave block 1, and two movable structures at the bottom of the concave block 1. A connecting block 3 is fixedly mounted at one end of each of the two movable structures, and two edge guide shafts 4 are mounted at the ends of the two connecting blocks 3 that are close to each other. When coating lithium battery electrodes is required, it is necessary to guide them. During the coating process, coating is generally only performed in the middle area of ​​the electrode at equal intervals, and the edge areas on the sides are not coated. Therefore, when guiding the electrode, it is guided through the guide shaft 2. Then, according to the width of the electrode, the positions of the movable structures on both sides are adjusted. Subsequently, the side of the electrode will be located in the gap between the two edge guide shafts 4 on the same side, which simultaneously plays a positioning and guiding role.

[0026] Furthermore, the bottom of the concave block 1 is integrally formed with an L-shaped protrusion 5 with an L-shaped cross-section, and the movable structure is set on the L-shaped protrusion 5.

[0027] Furthermore, the moving structure includes a motor structure and a slide 7. The motor structure is mounted on the slide 7, and the slide 7 is slidably mounted on the L-shaped protrusion 5. The slide 7 is fixedly connected to the connecting block 3.

[0028] Furthermore, a T-shaped groove 6 is provided on the L-shaped protrusion 5, and a T-shaped protrusion 8 is integrally formed on the slide table 7 at the position corresponding to the T-shaped groove 6. The T-shaped protrusion 8 and the T-shaped groove 6 are slidably engaged together.

[0029] Furthermore, the inner side of the L-shaped protrusion 5 is integrally formed with multiple sets of teeth 11 at equal intervals, and the motor structure meshes with the multiple sets of teeth 11.

[0030] Furthermore, the motor structure includes a motor 9 and a gear 10. The motor 9 is fixedly mounted on the slide table 7. The rotation shaft of the motor 9 passes through one end of the slide table 7 and the gear 10 is fixedly mounted thereon. The gear 10 meshes with multiple sets of teeth 11. According to the width of the pole piece, the gap between the two edge guide shafts 4 needs to be sufficient for the edge of the pole piece to pass through. When the motor 9 starts, it drives the gear 10 to rotate. Then, under the action of meshing, it drives the slide table 7 to move laterally, and synchronously drives the connecting block 3 and the edge guide shaft 4 to move.

[0031] Working principle: When coating lithium battery electrodes, they need to be guided. During the coating process, coating is generally only done in the middle area of ​​the electrode at equal intervals, and the edge areas on the sides are not coated. Therefore, when guiding the electrode, it is guided through the guide shaft 2. Then, according to the width of the electrode, the position of the moving structures on both sides is adjusted. The side of the electrode will then be located in the gap between the two edge guide shafts 4 on the same side, which serves both positioning and guiding functions.

[0032] The structure is as follows:

[0033] Concave Block 1

[0034] The concave block 1 is the basic load-bearing structure of the entire positioning device. It has an overall concave design. Its inner area is used to rotate and install the guide shaft 2, providing an installation carrier for the initial guidance of the electrode. The bottom is integrally formed with an L-shaped protrusion 5 with an L-shaped cross-section. The integrated structure enhances the load-bearing stability and provides an installation reference surface for the moving structure. The whole block plays the role of supporting and connecting the core components, ensuring the integrity and stress stability of the overall structure of the device.

[0035] Guide shaft 2

[0036] The guide shaft 2 is rotatably mounted on the inner side of the concave block 1. Its core function is to guide the lithium battery electrode through the device and provide initial guidance for the electrode to enter the subsequent positioning stage. Its rotational characteristics can reduce the friction during electrode transport, avoid damage to the electrode surface, and ensure that the electrode smoothly transitions to the edge positioning area. It is a key component in the pre-coating process of the electrode.

[0037] Connector Block 3

[0038] Connecting block 3 serves as an intermediate connecting structure, with one end fixedly connected to the slide 7 in the movable structure and the other end fixedly installed to the two edge guide shafts 4, forming a transmission link of "movable structure - connecting block 3 - edge guide shaft 4". Its core function is to transmit the lateral movement power of the slide 7, drive the edge guide shaft 4 to adjust its position synchronously, and at the same time provide stable installation support for the edge guide shaft 4, ensuring the accurate realization of the positioning and guiding function.

[0039] Edge guide shaft 4

[0040] Each connecting block 3 has two edge guide shafts 4 installed at one end near the electrode sheet, with the two sets of edge guide shafts 4 corresponding to the two sides of the electrode sheet respectively. During the electrode sheet guidance process, its side will be embedded in the gap between the two edge guide shafts 4 on the same side. By utilizing the close contact between the shaft and the edge of the electrode sheet, a dual function is achieved: first, positioning, limiting the lateral displacement of the electrode sheet and ensuring precise alignment of the coating area in the middle of the electrode sheet; second, guiding, assisting in the smooth transport of the electrode sheet and avoiding edge wrinkles or displacement that would affect the coating quality.

[0041] L-shaped protrusion 5

[0042] The L-shaped protrusion 5 is an integrally formed structure at the bottom of the concave block 1, with an L-shaped cross-section, and serves as a key mounting base for the moving structure. Its surface has a T-shaped groove 6, and its inner side has multiple sets of teeth 11 integrally formed at equal intervals. These teeth engage with the T-shaped protrusion 8 of the slide table 7 and the gears 10 of the motor structure, providing both a sliding track for the slide table 7 and a power engagement foundation for the motor structure. This integrated design ensures the stability and precision of the moving structure's operation.

[0043] T-groove 6

[0044] The T-slot 6 is formed on the surface of the L-shaped protrusion 5, and it forms a matching structure with the T-shaped protrusion 8 of the slide table 7. The "T-shaped" snap-fit ​​design achieves a sliding fit. Its core function is to restrict the movement direction of the slide table 7, allowing the slide table 7 to move smoothly only in the lateral direction (the width direction of the electrode sheet), while preventing the slide table 7 from falling off or shifting during movement, and providing a precise guide track for the position adjustment of the edge guide shaft 4.

[0045] Slide 7

[0046] The slide table 7 is the core actuator of the moving structure. It is slidably mounted on the L-shaped protrusion 5 and is slidably engaged with the T-shaped groove 6 via the T-shaped protrusion 8. A motor 9 is fixedly mounted on its top, with one end fixedly connected to the connecting block 3, forming a power transmission path of "motor 9 - slide table 7 - connecting block 3 - edge guide shaft 4". When the motor 9 starts, the slide table 7 moves laterally along the T-shaped groove 6 under the meshing action of the gear 10 and teeth 11, simultaneously driving the connecting block 3 and the edge guide shaft 4 to adjust their spacing to accommodate pole pieces of different widths.

[0047] T-shaped protrusion 8

[0048] The T-shaped protrusion 8 is an integrally formed structure at the position of the slide table 7 corresponding to the T-shaped groove 6, forming a precise sliding engagement with the T-shaped groove 6. Its "T-shaped" structure can fully fit the inner wall of the T-shaped groove 6, ensuring the smooth movement of the slide table 7 while limiting the vertical displacement of the slide table 7 through the engagement relationship, preventing the slide table 7 from loosening or tilting during force or movement, and ensuring the accuracy of the slide table 7 when driving the edge guide shaft 4 to adjust its position.

[0049] Motor 9

[0050] Motor 9 is the power source for the moving structure. It is fixedly installed on the top of slide 7, and its rotation shaft passes through slide 7 and extends to the inner area of ​​L-shaped protrusion 5. The core function of motor 9 is to output rotational power after starting, which drives gear 10 to rotate synchronously through the rotation shaft, providing power support for the lateral movement of slide 7. It can control the start and stop according to the pole width requirements, and realize the flexible adjustment of the spacing of edge guide shaft 4.

[0051] Gear 10

[0052] Gear 10 is fixedly mounted at the end of the rotating shaft of motor 9, located below slide 7, and meshes with the teeth 11 of L-shaped protrusion 5. Its core function is to convert the rotational power of motor 9 into the lateral movement power of slide 7: when motor 9 drives gear 10 to rotate, the meshing relationship between gear 10 and teeth 11 generates lateral thrust (or pull), driving slide 7 to move smoothly along T-slot 6, thereby realizing the position adjustment of edge guide shaft 4. It is a key conversion component for power transmission.

[0053] Teeth 11

[0054] The teeth 11 are multiple sets of integrally formed structures with equal spacing on the inner side of the L-shaped protrusion 5, evenly distributed along the length direction (lateral direction) of the L-shaped protrusion 5. They mesh with the gear 10, and the multiple sets of equidistant designs ensure the uniformity of speed and positional accuracy of the slide table 7 during movement, providing a stable meshing support surface for the gear 10, so that the rotational power of the motor 9 can be continuously and smoothly converted into the lateral displacement of the slide table 7, and ensuring the controllability of the spacing adjustment of the edge guide shaft 4.

[0055] 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 lithium battery electrode coating edge positioning device, comprising a concave block (1), a guide shaft (2) rotatably mounted on the inner side of the concave block (1), two movable structures provided at the bottom of the concave block (1), a connecting block (3) fixedly mounted at one end of each of the two movable structures, and two edge guide shafts (4) mounted at the ends of the two connecting blocks (3) that are close to each other.

2. The lithium battery pole piece coating edge positioning device according to claim 1, wherein: The bottom of the concave block (1) is integrally formed with an L-shaped protrusion (5) with an L-shaped cross section, and the movable structure is disposed on the L-shaped protrusion (5).

3. The lithium battery pole piece coating edge positioning device according to claim 2, wherein: The moving structure includes a motor structure and a slide (7). The motor structure is mounted on the slide (7), which is slidably mounted on the L-shaped protrusion (5). The slide (7) is fixedly connected to the connecting block (3).

4. The lithium battery pole piece coating edge positioning device according to claim 3, characterized in that: The L-shaped protrusion (5) has a T-shaped groove (6), and the slide (7) has a T-shaped protrusion (8) integrally formed at the position corresponding to the T-shaped groove (6). The T-shaped protrusion (8) and the T-shaped groove (6) are slidably engaged together.

5. The lithium battery electrode coating edge positioning device according to claim 3, characterized in that: The inner side of the L-shaped protrusion (5) is integrally formed with multiple sets of teeth (11) at equal intervals, and the motor structure meshes with the multiple sets of teeth (11).

6. The lithium battery electrode coating edge positioning device according to claim 5, characterized in that: The motor structure includes a motor (9) and a gear (10). The motor (9) is fixedly mounted on a slide (7). The rotation shaft of the motor (9) passes through one end of the slide (7) and the gear (10) is fixedly mounted thereon. The gear (10) meshes with multiple sets of teeth (11).

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