A lithium battery processing coating equipment

Abstract

This utility model relates to the field of lithium battery processing technology, specifically disclosing a lithium battery processing coating equipment, including a fixed frame, an unwinding roller installed inside the fixed frame, a fastening assembly installed outside the unwinding roller, two limiting grooves inside the fixed frame, limiting rods fixedly connected inside the limiting grooves, tensioning rods slidably connected outside the two limiting rods, two rack plates fixedly connected to the bottom of the tensioning rods, a motor fixedly connected outside the fixed frame, a rotating column fixedly connected to the output end of the motor, and two gears fixedly connected outside the rotating column. In use, starting the motor drives the rotating column and gears to rotate, causing the meshing rack plates to drive the tensioning rods upward to push the current collector material. The limiting rods limit the tensioning rods, allowing for flexible adjustment of the tension of the current collector material, ensuring the current collector remains flat and taut, and preventing wrinkles due to insufficient or uneven tension.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery processing technology, specifically to a lithium battery processing coating equipment. Background Technology

[0002] Lithium-ion batteries are a type of rechargeable battery that primarily relies on the movement of lithium ions between the positive and negative electrodes to function. In the structure of a lithium battery, the separator is one of the key internal components. The separator material is non-conductive, and its physical and chemical properties have a significant impact on the battery's performance. Existing separators are often produced by coating and spraying slurry. Slurry coating involves applying a slurry with good stability, viscosity, and fluidity to the positive and negative current collectors.

[0003] In existing technology, the current collector material is installed on the unwinding roller, and after passing through the coating mechanism, it is pulled by the take-up roller at a constant speed, so that the current collector passes through the coating area at a uniform speed. During this process, the coating head sprays the mixed positive and negative electrode slurry evenly onto the surface of the current collector. However, if the tension between the current collector material is not adjusted when it is placed on the unwinding roller and connected to the take-up roller, the tension will be too small or uneven. This makes it impossible for the current collector to maintain a flat and taut state. Under the pressure of the coating head, wrinkles are easily generated. These wrinkles will not only destroy the continuity of the coating and cause uneven distribution of active materials, but may also form permanent defects in the subsequent rolling process, causing micro-short circuit risks inside the battery. To address this, we propose a lithium battery processing coating equipment. Utility Model Content

[0004] The purpose of this invention is to provide a lithium battery processing and coating equipment to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a lithium battery processing and coating equipment, comprising a fixed frame, an unwinding roller installed inside the fixed frame, a fastening assembly installed outside the unwinding roller, two limiting grooves opened inside the fixed frame, limiting rods fixedly connected inside the limiting grooves, tensioning rods slidably connected outside the two limiting rods, two rack plates fixedly connected to the bottom of the tensioning rods, a motor I fixedly connected outside the fixed frame, a rotating column fixedly connected to the output end of the motor I, two gears fixedly connected outside the rotating column, a fixed column fixedly connected inside the fixed frame, a limiting column rotatably connected outside the fixed column, two limiting plates fixedly connected outside the fixed column, a spraying assembly fixedly connected inside the fixed frame, a smoothing assembly fixedly connected inside the fixed frame, a mounting plate fixedly connected inside the fixed frame, multiple hot air blowers fixedly connected inside the mounting plate, a second motor fixedly connected outside the fixed frame, and a take-up roller fixedly connected to the output end of the second motor.

[0006] The unwinding roller has two limit rings connected to its external thread, and multiple rotating rods are fixedly connected to the outside of the limit rings.

[0007] The spraying assembly has multiple delivery pipes fixedly connected inside, and nozzles are fixedly connected to the bottom of the delivery pipes.

[0008] Among them, scraper one is fixedly connected to the bottom of the smoothing component, a fixing plate is fixedly connected inside the fixing frame, and scraper two is fixedly connected to the bottom of the fixing plate.

[0009] The winding roller is externally rotatably connected to the inside of the fixed frame, and the limiting post is externally rotatably connected to the inside of the fixed frame.

[0010] The rotating column is rotatably connected to the inside of the fixed frame, and the gear is meshed with the rack plate.

[0011] The tensioning rod is externally slidably connected to the inside of the limiting groove, and the rotating column is externally rotatably connected to the inside of the fixed frame.

[0012] This utility model has at least the following beneficial effects:

[0013] In use, this invention starts the motor, which drives the rotating column and gear to rotate. This causes the meshing rack plate to drive the tension rod upward, pushing the current collector material upward. The limiting rod limits the tension rod, allowing for flexible adjustment of the current collector material's tension. This ensures the current collector remains flat and taut, preventing wrinkles caused by insufficient or uneven tension, which could lead to coating continuity issues, uneven distribution of active materials, and defects in subsequent rolling processes. This improves the quality of the lithium battery. The spraying component, in conjunction with the conveying pipe and nozzle, sprays the slurry. A hot air blower dries the slurry, ensuring adhesion and drying. The smoothing component uses scraper one and scraper two to smooth the slurry sequentially, with scraper two being slightly longer than scraper one, further ensuring uniform and smooth slurry. This comprehensively improves the coating quality and production process level of lithium battery processing, reducing potential battery performance issues caused by coating problems. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the fastening component structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the tensioning rod structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the spraying component structure of this utility model;

[0018] In the diagram: 1. Fixed frame; 2. Unwinding roller; 201. Fastening assembly; 202. Limiting ring; 203. Rotating rod; 3. Limiting groove; 301. Limiting rod; 302. Tensioning rod; 303. Rack plate; 304. Motor 1; 305. Rotating column; 306. Gear; 4. Fixed column; 401. Limiting column; 402. Limiting piece; 5. Spraying assembly; 501. Conveying pipe; 502. Nozzle; 6. Smoothing assembly; 601. Scraper 1; 602. Fixed plate; 603. Scraper 2; 7. Mounting plate; 701. Hot air blower; 8. Motor 2; 801. Rewinding roller. Detailed Implementation

[0019] 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.

[0020] Example 1

[0021] Please see Figures 1 to 4This utility model provides a technical solution: a lithium battery processing and coating equipment, including a fixed frame 1, an unwinding roller 2 installed inside the fixed frame 1, a fastening assembly 201 installed outside the unwinding roller 2, two limiting grooves 3 inside the fixed frame 1, limiting rods 301 fixedly connected inside the limiting grooves 3, tensioning rods 302 slidably connected outside the two limiting rods 301, the tensioning rods 302 slidably connected outside the limiting grooves 3, a rotating column 305 rotatably connected outside the fixed frame 1, two rack plates 303 fixedly connected to the bottom of the tensioning rods 302, a motor 304 fixedly connected outside the fixed frame 1, a rotating column 305 fixedly connected to the output end of the motor 304, two gears 306 fixedly connected outside the rotating column 305, the rotating column 305 rotatably connected outside the fixed frame 1, the gears 306 meshing with the rack plates 303, a fixed column 4 fixedly connected inside the fixed frame 1, and the fixed column 4 rotating outside... A limiting post 401 is connected to the outside of a fixed frame 1, which is rotatably connected to the inside of the fixed frame 1. Two limiting plates 402 are fixedly connected to the outside of the fixed post 401. A spraying component 5 and a smoothing component 6 are fixedly connected inside the fixed frame 1. A mounting plate 7 is fixedly connected inside the fixed frame 1, and multiple hot air blowers 701 are fixedly connected inside the mounting plate 7. During the winding and coating process of the current collector material, if it is necessary to adjust the tension, the motor 304 is started. The motor 304 drives the rotating post 305 to rotate, and the rotating post 305 drives the gear 306 to rotate. The gear 306 meshes with the rack plate 303. When the gear 306 rotates, it drives the rack plate 303 to slide upward. The rack plate 303 pushes the tension rod 302 to move upward. During the upward movement of the tension rod 302, it is limited by the limiting post 301, which applies a top force to the current collector material, thereby adjusting the tension of the material and ensuring that the current collector maintains a suitable tension during the coating process.

[0022] A motor 8 is fixedly connected to the outside of the fixed frame 1. A take-up roller 801 is fixedly connected to the output end of the motor 8. The take-up roller 801 is externally rotatably connected to the inside of the fixed frame 1. When the motor 8 is started, the take-up roller 801 is driven to rotate slowly. The rotation of the take-up roller 801 pulls the current collector material to move inside the equipment.

[0023] The unwinding roller 2 has two limit rings 202 connected to its external thread. Multiple rotating rods 203 are fixedly connected to the outside of the limit rings 202. After the current collector material is placed on the unwinding roller 2, the limit rings 202 are reinstalled and tightened by the rotating rods 203 to fix the position of the current collector material.

[0024] Multiple conveying pipes 501 are fixedly connected inside the spraying assembly 5, and nozzles 502 are fixedly connected to the bottom of the conveying pipes 501. When the current collector material passes through the spraying assembly 5, the conveying pipes 501 inside the spraying assembly 5 convey the slurry to the nozzles 502, and the nozzles 502 spray the slurry evenly on the surface of the current collector material.

[0025] The bottom of the smoothing component 6 is fixedly connected to a scraper 601, and the inside of the fixed frame 1 is fixedly connected to a fixed plate 602. The bottom of the fixed plate 602 is fixedly connected to a scraper 603. The scraper 601 performs the initial smoothing of the slurry, removes excess slurry, and initially adjusts the thickness. Then, the current collector passes through the scraper 603 at the bottom of the fixed plate 602, and the scraper 603 performs the secondary smoothing. Since the scraper 603 is slightly longer than the scraper 601, it can more fully smooth the slurry, further improve the uniformity and smoothness of the slurry distribution on the surface of the current collector, and ensure the coating quality.

[0026] The working principle of this utility model is as follows: When coating the outside of the collector, the collector material is first placed outside the unwinding roller 2. When placing it, the limiting ring 202 on one side needs to be slid out from the outside of the unwinding roller 2 with the fastening component 201. Then, the collector material is sleeved on the outside of the unwinding roller 2 and reinstalled. Then, one side of the collector material passes through the top of the limiting rod 301 and the bottom of the limiting post 401 in sequence, and is finally fixedly connected to the outside of the take-up roller 801. Then, the take-up roller 801 can be slowly rotated by the motor 8. Then, the spraying component 5 and the conveying pipe 501 spray the slurry to the outside of the collector through the nozzle 502. Then, when passing through the mounting plate 7 and the bottom of the hot air blower 701, the hot air blower 701 dries the slurry sprayed on the top of the collector with hot air, so that the collector is dried. Finally, the take-up roller 801 performs the subsequent winding.

[0027] When the current collector material is wound and coated, in order to prevent insufficient tension of the current collector material, it is necessary to start motor 304, so that motor 304 drives rotating column 305 to rotate, and then rotating column 305 drives gear 306 to rotate. When gear 306 rotates, it drives rack plate 303, which meshes with it, to slide upward, so that rack plate 303, together with tensioning rod 302, pushes the current collector material upward. When tensioning rod 302 moves upward, it is limited by limit rod 301. At this time, the tension of current collector material can be adjusted.

[0028] Example 2

[0029] Please see Figure 1 and Figure 4 In this second embodiment, the other structures remain unchanged. The difference from the first embodiment is that after the spraying component 5 sprays the top of the collector, the collector and the sprayed slurry are leveled by the scraper 601 at the bottom of the smoothing component 6, and then leveled again by the scraper 603 at the bottom of the fixing plate 602. At the same time, the scraper 603 is slightly longer than the scraper 601.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] 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 processing coating apparatus comprising a fixed frame (1), characterized in that: The fixed frame (1) is equipped with an unwinding roller (2), and a fastening assembly (201) is installed on the outside of the unwinding roller (2). The fixed frame (1) has two limiting grooves (3), and limiting rods (301) are fixedly connected inside the limiting grooves (3). Tensioning rods (302) are slidably connected to the outside of the two limiting rods (301). Two rack plates (303) are fixedly connected to the bottom of the tensioning rods (302). A motor (304) is fixedly connected to the outside of the fixed frame (1). A rotating column (305) is fixedly connected to the output end of the motor (304). Two gears are fixedly connected to the outside of the rotating column (305). 306), a fixed column (4) is fixedly connected inside the fixed frame (1), a limit column (401) is rotatably connected outside the fixed column (4), two limit plates (402) are fixedly connected outside the fixed column (4), a spraying component (5) is fixedly connected inside the fixed frame (1), a smoothing component (6) is fixedly connected inside the fixed frame (1), an installation plate (7) is fixedly connected inside the fixed frame (1), multiple hot air blowers (701) are fixedly connected inside the installation plate (7), a second motor (8) is fixedly connected outside the fixed frame (1), and a take-up roller (801) is fixedly connected to the output end of the second motor (8).

2. The coating apparatus for processing lithium batteries according to claim 1, wherein: The unwinding roller (2) has two limiting rings (202) externally threadedly connected, and multiple rotating rods (203) are fixedly connected to the outside of the limiting rings (202).

3. The coating apparatus for processing lithium batteries according to claim 1, wherein: The spraying assembly (5) has multiple delivery pipes (501) fixedly connected inside, and a nozzle (502) is fixedly connected to the bottom of the delivery pipe (501).

4. The coating apparatus for processing lithium batteries according to claim 1, wherein: The bottom of the smoothing component (6) is fixedly connected to a scraper (601), the inside of the fixed frame (1) is fixedly connected to a fixed plate (602), and the bottom of the fixed plate (602) is fixedly connected to a scraper (603).

5. The coating apparatus for processing lithium batteries according to claim 1, wherein: The take-up roller (801) is externally rotatably connected to the inside of the fixed frame (1), and the limiting post (401) is externally rotatably connected to the inside of the fixed frame (1).

6. The coating apparatus for processing lithium batteries according to claim 1, wherein: The rotating column (305) is externally rotatably connected to the inside of the fixed frame (1), and the gear (306) is externally meshed with the rack plate (303).

7. The coating apparatus for processing lithium batteries according to claim 1, wherein: The tensioning rod (302) is externally slidably connected to the inside of the limiting groove (3), and the rotating column (305) is externally rotatably connected to the inside of the fixed frame (1).

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