A lithium battery winding machine core pressing device

Abstract

The utility model discloses a lithium cell winding machine electric core pressure device, including air cylinder and setting the connecting frame of air cylinder output end, be provided with electric core pressure roller on the connecting frame, be provided with cleaning subassembly on the connecting frame, the cleaning subassembly includes pressure cleaning spare and auxiliary cleaning spare, the auxiliary cleaning spare sets up on pressure cleaning spare, pressure cleaning spare is used for scraping off the impurity of winding electric core surface, the impurity of cleaning on pressure cleaning spare is cleaned by the auxiliary cleaning spare. The utility model discloses through the setting of cleaning subassembly makes the fusion of connecting frame " elasticity pressure - on - line scraping - automatic sweep falls " three in one structure, has realized pressure force self - adaptation, impurity on - line cleaning and cleaning spare self - maintenance, has reduced the electric core scrapping and shutdown cleaning frequency of the impurity winding in - cause, to simple mechanical linkage replaces complex pneumatic, vacuum dust removal system to improve electric core security and yield rate.

Description

Technical Field

[0001] This utility model belongs to the field of lithium battery production technology, and in particular relates to a cell pressing device for a lithium battery winding machine. Background Technology

[0002] The cell pressing device in a lithium battery winding machine is a crucial component in the lithium battery production process, used to press the battery cells firmly. Its main function is to ensure that the battery cells (positive and negative electrode materials and separator) maintain a certain pressure during the winding process, thereby guaranteeing the morphological stability of the cells and the consistency of the battery. Specifically, this device applies pressure to the cells during winding to prevent problems such as loosening, misalignment, or uneven thickness, thus improving the overall performance and safety of the battery. The pressing device can adjust the pressure as needed to adapt to the production requirements of different battery models and specifications.

[0003] Currently, most existing clamping mechanisms use rigid rollers for direct pressing, which has a single function and cannot remove powder, dust, and burrs from the battery cell surface online. If impurities enter the battery cell through the winding needle, they can cause problems such as diaphragm puncture and electrode short circuits. In addition, the cleaning components require frequent shutdowns for manual wiping after impurities accumulate, reducing the overall line uptime.

[0004] Therefore, we propose a cell pressing device for lithium battery winding machines. Utility Model Content

[0005] To address the aforementioned problems, the purpose of this invention is to provide a lithium battery winding machine cell pressing device.

[0006] To achieve the above objectives, this utility model proposes a lithium battery winding machine cell pressing device, including a cylinder and a connecting frame disposed at the output end of the cylinder. The connecting frame is provided with a cell pressing roller and a cleaning component. The cleaning component includes a pressing cleaning component and an auxiliary cleaning component. The auxiliary cleaning component is disposed on the pressing cleaning component. The pressing cleaning component is used to scrape off impurities from the surface of the wound cell, and the auxiliary cleaning component cleans the impurities cleaned on the pressing cleaning component.

[0007] Preferably, the clamping cleaning component includes a fixing frame, a helical spring, a crossbar, a scraper, and a positioning screw. The fixing frame has a reinforcing rod on its inner side, and multiple reinforcing rods are evenly spaced. The fixing frame is connected to the connecting frame by a rotating connecting block.

[0008] Preferably, the helical spring is disposed on the side wall opposite to the fixed frame and the connecting frame, and the end of the helical spring away from the fixed frame is connected to the connecting frame. The crossbar is disposed inside the fixed frame and away from the connecting frame. The scraper is disposed on the crossbar, and the end of the scraper away from the crossbar is pointed. The crossbar has a triangular cross-section. Threaded holes are provided at both ends of the crossbar. The positioning screws are disposed on both sides of the fixed frame, and one end of each positioning screw passes through the fixed frame and is threaded into the threaded hole on the crossbar.

[0009] Preferably, the auxiliary cleaning component includes a limiting groove, a threaded rod, a drive motor, a moving plate, and a cleaning brush. The limiting groove is formed on the crossbar and is located on one side of the scraper.

[0010] Preferably, the threaded rod is disposed inside the limiting groove, the drive motor is disposed on the crossbar, and the output end of the drive motor is connected to one end of the threaded rod. One end of the moving plate is slidably disposed inside the limiting groove, and the threaded rod passes through the moving plate through the thread. The cleaning brush is disposed at the other end of the moving plate and is attached to the scraper.

[0011] Preferably, the cylinder is equipped with a control unit, which is connected to the cylinder via an electrical signal.

[0012] Preferably, the cross-section of the connecting frame is U-shaped, and a set of mounting plates is provided at both ends of the connecting frame. Each set of mounting plates has two plates, and the two mounting plates are connected by bolts to fix the two ends of the battery cell pressing roller.

[0013] The lithium battery winding machine cell pressing device proposed in this utility model can bring the following beneficial effects: Compared to traditional devices, the cleaning components in this solution integrate a three-in-one structure of "elastic clamping - online scraping - automatic sweeping" on the connecting frame. This achieves adaptive clamping force, online removal of impurities, and self-maintenance of the cleaning components, significantly reducing the number of battery cell scraps and downtime cleaning caused by impurities. It replaces complex pneumatic and vacuum dust removal systems with simple mechanical linkage, thereby improving battery cell safety and yield. Attached Figure Description

[0014] The accompanying drawings, which are provided to further illustrate the present invention and constitute a part of the present invention, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0015] In the attached diagram: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2This is an exploded view of the connecting frame and the battery cell pressing roller of this utility model; Figure 3 This is an exploded view of the cleaning component of this utility model; Figure 4 This is a cross-sectional view of the crossbar of this utility model.

[0016] In the picture: 1. Cylinder; 100. Control unit; 2. Connecting frame; 200. Mounting plate; 3. Battery cell pressing roller; 4. Cleaning assembly; 41. Pressing cleaning component; 411. Fixing frame; 412. Helical spring; 413. Crossbar; 414. Scraper; 415. Positioning screw; 42. Auxiliary cleaning component; 421. Limiting groove; 422. Threaded rod; 423. Drive motor; 424. Moving plate; 425. Cleaning brush. Detailed Implementation

[0017] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0018] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "a solution," "some solutions," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that solution or example is included in at least one solution or example of this invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same solution or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more solutions or examples.

[0022] like Figures 1-4 As shown in the figure, an embodiment of this utility model proposes a cell pressing device for a lithium battery winding machine, including a cylinder 1 and a connecting frame 2 disposed at the output end of the cylinder 1. The cylinder 1 is a slide cylinder. A cell pressing roller 3 is disposed on the connecting frame 2. A cleaning component 4 is disposed on the connecting frame 2. The cleaning component 4 includes a pressing cleaning component 41 and an auxiliary cleaning component 42. The auxiliary cleaning component 42 is disposed on the pressing cleaning component 41. The pressing cleaning component 41 is used to scrape off impurities on the surface of the wound cell. The auxiliary cleaning component 42 cleans the impurities cleaned on the pressing cleaning component 41.

[0023] The clamping cleaning component 41 includes a fixing frame 411, a spiral spring 412, a crossbar 413, a scraper 414, and a positioning screw 415. The fixing frame 411 has a reinforcing rod on its inner side, and multiple reinforcing rods are evenly spaced. The fixing frame 411 is connected to the connecting frame 2 by a rotating connecting block.

[0024] The helical spring 412 is disposed on the side wall of the fixed frame 411 opposite to the connecting frame 2. The end of the helical spring 412 away from the fixed frame 411 is connected to the connecting frame 2. The crossbar 413 is disposed inside the fixed frame 411 and away from the connecting frame 2. The scraper 414 is disposed on the crossbar 413. The end of the scraper 414 away from the crossbar 413 is pointed. The cross section of the scraper 414 is triangular. Threaded holes are provided at both ends of the crossbar 413. The positioning screws 415 are disposed on both sides of the fixed frame 411. One end of each positioning screw 415 passes through the fixed frame 411 and is threaded into the threaded hole on the crossbar 413.

[0025] While the cell pressing roller 3 provides continuous pressing force, the scraper 414 removes surface impurities online, preventing foreign objects from being rolled into the cell and reducing the risk of short circuit. The helical spring 412 forms a floating buffer between the fixing frame 411 and the connecting frame 2. The pressing force is automatically adjusted according to the cell thickness to prevent overpressure from damaging the electrode.

[0026] The auxiliary cleaning component 42 includes a limiting groove 421, a threaded rod 422, a drive motor 423, a moving plate 424, and a cleaning brush 425. The limiting groove 421 is formed on the crossbar 413 and is located on one side of the scraper 414.

[0027] The threaded rod 422 is disposed inside the limiting groove 421. The drive motor 423 is disposed on the crossbar 413, and the output end of the drive motor 423 is connected to one end of the threaded rod 422. One end of the moving plate 424 is slidably disposed inside the limiting groove 421, and the threaded rod 422 passes through the moving plate 424 by threads. The cleaning brush 425 is disposed at the other end of the moving plate 424, and the cleaning brush 425 is attached to the scraper block 414.

[0028] The auxiliary cleaning component 42 uses the cleaning brush 425 to reciprocate to clean the scraper 414, preventing impurities from accumulating. This eliminates the need for frequent machine shutdowns for manual wiping, thus improving continuous operation capability.

[0029] It should be noted that a controller is installed on the crossbar 413, and the controller is electrically connected to the drive motor 423. In this way, the operation and operating status of the drive motor 423 can be controlled by the controller. A power source (which can be a storage battery or a lithium battery) is installed inside the crossbar 413 to provide electrical energy for the operation of the drive motor 423.

[0030] The cylinder 1 is equipped with a control unit 100, which is connected to the cylinder 1 via an electrical signal.

[0031] The cross-section of the connecting frame 2 is U-shaped. A set of mounting plates 200 is provided at both ends of the connecting frame 2. There are two mounting plates 200 in each set. The two mounting plates 200 are connected by bolts and the two mounting plates 200 fix the two ends of the battery cell pressing roller 3.

[0032] Working principle: Under the command of the control unit 100, cylinder 1 pushes the connecting frame 2 forward, and the battery cell pressing roller 3 then elastically presses the moving wound battery cell. At the same time, under the pre-compression of the helical spring 412, the fixed frame 411 keeps the triangular scraper 414 at the front end of the crossbar 413 in constant contact with the battery cell surface. Impurities on the moving battery cell surface are continuously scraped off and temporarily stored at the tip of the scraper 414. When the impurities accumulate to a set level, the drive motor 423 on the crossbar 413 is started under control, driving the threaded rod 422 to rotate. The moving plate 424 slides back and forth along the limiting groove 421, and the cleaning brush 425 attached to the inclined surface of the scraper 414 sweeps off the accumulated impurities in real time, realizing a closed loop of pressing-scraping-sweeping. Throughout the process, the battery cell pressing force is automatically compensated by the helical spring 412, without the need for additional adjustment.

[0033] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0034] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A cell pressing device for a lithium battery winding machine, comprising a cylinder (1) and a connecting frame (2) disposed at the output end of the cylinder (1), wherein a cell pressing roller (3) is disposed on the connecting frame (2), characterized in that, The connecting frame (2) is provided with a cleaning component (4), which includes a pressing cleaning component (41) and an auxiliary cleaning component (42). The auxiliary cleaning component (42) is disposed on the pressing cleaning component (41). The pressing cleaning component (41) is used to scrape off impurities on the surface of the wound battery cell, and the auxiliary cleaning component (42) cleans the impurities cleaned on the pressing cleaning component (41).

2. The lithium battery winding machine cell pressing device according to claim 1, characterized in that, The clamping cleaning component (41) includes a fixing frame (411), a spiral spring (412), a crossbar (413), a scraper (414), and a positioning screw (415). The fixing frame (411) has a reinforcing rod on its inner side, and multiple reinforcing rods are evenly spaced. The fixing frame (411) is connected to the connecting frame (2) by a rotating connecting block.

3. The lithium battery winding machine cell pressing device according to claim 2, characterized in that, The helical spring (412) is disposed on the side wall opposite to the connecting frame (2) of the fixed frame (411). The end of the helical spring (412) away from the fixed frame (411) is connected to the connecting frame (2). The crossbar (413) is disposed inside the fixed frame (411) and away from the connecting frame (2). The scraper (414) is disposed on the crossbar (413). The end of the scraper (414) away from the crossbar (413) is pointed. The cross section of the scraper (414) is triangular. Threaded holes are provided at both ends of the crossbar (413). The positioning screw (415) is disposed on both sides of the fixed frame (411). One end of the positioning screw (415) passes through the fixed frame (411) and is threaded into the threaded hole on the crossbar (413).

4. The lithium battery winding machine cell pressing device according to claim 2, characterized in that, The auxiliary cleaning component (42) includes a limiting groove (421), a threaded rod (422), a drive motor (423), a moving plate (424), and a cleaning brush (425). The limiting groove (421) is opened on the crossbar (413) and is located on one side of the scraper (414).

5. A lithium battery winding machine cell pressing device according to claim 4, characterized in that, The threaded rod (422) is disposed inside the limiting groove (421), the drive motor (423) is disposed on the crossbar (413), and the output end of the drive motor (423) is connected to one end of the threaded rod (422). One end of the moving plate (424) is slidably disposed inside the limiting groove (421), and the threaded rod (422) passes through the moving plate (424) through the thread. The cleaning brush (425) is disposed at the other end of the moving plate (424), and the cleaning brush (425) is attached to the scraper (414).

6. The lithium battery winding machine cell pressing device according to claim 1, characterized in that, The cylinder (1) is equipped with a control unit (100), which is connected to the cylinder (1) via an electrical signal.

7. The lithium battery winding machine cell pressing device according to claim 1, characterized in that, The cross-section of the connecting frame (2) is U-shaped. A set of mounting plates (200) is provided at both ends of the connecting frame (2). There are two mounting plates (200) in each set. The two mounting plates (200) are connected by bolts. The two mounting plates (200) fix the two ends of the battery cell pressing roller (3).

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