Lithium battery positive pole material mixing stirrer

Abstract

The utility model belongs to lithium battery technical field relates to a kind of lithium battery positive pole batching mixing stirrer, including vacuum stirring drum, cylinder cover, stirring device, motor and filter box, stirring drum bottom has support, top has cylinder cover, stirring device is built-in, motor is located bottom and is connected stirring device, stirring device includes stirring roller, roll shaft, bottom disc and wall scraping rod, all with stirring drum coaxial installation, stirring drum top has baffle and temperature and humidity detector, cylinder cover has handle and vacuum interface, filter box is equipped with 120 mesh replaceable filter membrane, the utility model not only improves production efficiency, reduces cost, and effectively reduces the oxidation and moisture content of material under the stirring in vacuum environment, to improve the purity and performance of lithium battery positive material, since stirring is more uniform, the performance stability and reliability of battery have been enhanced, this is important for improving the overall performance of lithium battery.

Description

Technical Field

[0001] This utility model belongs to the field of lithium battery technology, specifically relating to a mixing and stirring device for lithium battery positive electrode materials. Background Technology

[0002] A lithium-ion battery is a rechargeable battery that primarily functions by the movement of lithium ions between the positive and negative electrodes. The positive electrode material is a component of the lithium-ion battery and directly affects its performance.

[0003] In the preparation of lithium battery cathode materials, various ingredients need to be mixed and stirred. Traditional mixers can only scrape the sides and bottom of the cylinder during stirring intervals to ensure uniform dispersion of the slurry, but this is inefficient and requires intermittent stirring, which affects the mixing efficiency of the ingredients. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a lithium battery positive electrode mixing and stirring device.

[0005] To achieve the above technical objectives, the present invention adopts the following technical solution:

[0006] A lithium battery cathode material mixing and stirring device includes a vacuum stirring drum, a drum cover, a stirring device, a motor, and a filter box. The vacuum stirring drum has a support at its bottom and a drum cover at its top. The stirring device is located inside the vacuum stirring drum, and the motor is installed at the bottom of the vacuum stirring drum. The power output end of the motor is connected to the power input end of the stirring device. A discharge pipe is opened at the bottom of the side wall of the vacuum stirring drum, and the filter box is installed at the outlet of the discharge pipe. The stirring device includes a stirring roller, a roller shaft, a base, and a scraper rod. The stirring roller is coaxially mounted to the vacuum stirring drum via the roller shaft. A scraper arm is provided at the top of the roller shaft, and the bottom surface of the scraper arm is tangent to the upper surface of the base. The base and the roller shaft are mounted via bearings. The scraper rod is mounted on the base and is tangent to the inner wall of the vacuum stirring drum.

[0007] Furthermore, a partition is provided at the top of the vacuum stirring cylinder, a temperature and humidity detector is provided above the partition, and through holes are provided on the partition.

[0008] Furthermore, the cylinder cover is provided with a handle, and a vacuum port is provided next to the handle.

[0009] Furthermore, the stirring roller is equipped with helical stirring blades via a connecting rod.

[0010] Furthermore, the filter box is equipped with a replaceable filter membrane.

[0011] Furthermore, the filter membrane has a mesh size of 120.

[0012] According to the above technical solution, the beneficial effects of this utility model are as follows: This utility model not only improves production efficiency and reduces costs, but also effectively reduces the oxidation and moisture content of materials by stirring in a vacuum environment, and improves the dispersion of materials during the stirring process, thereby improving the purity and performance of lithium battery cathode materials. Due to the more uniform stirring, the performance stability and reliability of the battery are enhanced, which is crucial for improving the overall performance of lithium batteries. Attached Figure Description

[0013] Figure 1 A schematic diagram of the overall structure of a mixing and stirring device for lithium battery cathode materials;

[0014] Figure 2 A schematic diagram of the internal structure of a mixing and stirring device for lithium battery cathode materials;

[0015] 1-Vacuum mixing drum; 11-Support; 12-Discharge pipe; 13-Baffle; 14-Temperature and humidity detector; 2-Cylinder cover; 21-Handle; 22-Vacuum interface; 3-Mixing device; 31-Mixing roller; 32-Roller shaft; 33-Base; 34-Scraper rod; 35-Scraper arm; 4-Motor; 5-Filter box; 51-Filter membrane. Detailed Implementation

[0016] To more clearly illustrate the technical solution of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and embodiments.

[0017] See Figure 1-2 A lithium battery cathode material mixing and stirring device includes a vacuum stirring drum 1, a drum cover 2, a stirring device 3, a motor 4, and a filter box 5.

[0018] See Figure 1-2 The vacuum mixing drum 1 has a support 11 at the bottom and a cover 2 at the top. A stirring device 3 is installed inside the vacuum mixing drum 1, and a motor 4 is installed at the bottom of the vacuum mixing drum 1. The power output end of the motor 4 is connected to the power input end of the stirring device 3. A discharge pipe 12 is opened at the bottom of the side wall of the vacuum mixing drum 1, and a filter box 5 is installed at the outlet of the discharge pipe 12. The support 11 supports the vacuum mixing drum 1 to ensure its stable placement and prevent tilting or movement during the stirring process. The cover 2 covers the top of the vacuum mixing drum 1 to ensure airtightness. The stirring device 3 is used to stir the lithium battery positive electrode material, and the motor 4 provides stirring power to the stirring device 3. The discharge pipe 12 is used to export the stirred material from the vacuum mixing drum into the filter box 5 to filter the stirred material.

[0019] See Figure 1-2The stirring device 3 includes a stirring roller 31, a roller shaft 32, a base 33, and a scraper rod 34. The stirring roller 31 is coaxially mounted to the vacuum stirring cylinder 1 via the roller shaft 32. A scraper arm 35 is provided at the top of the roller shaft 32, and the bottom surface of the scraper arm 35 is tangent to the upper surface of the base 33. The base 33 and the roller shaft 32 are mounted via bearings. The scraper rod 34 is mounted on the base 33 and is tangent to the inner wall of the vacuum stirring cylinder 1. The stirring roller 31 directly participates in the stirring process, mixing the materials evenly through rotation. The roller shaft 32 supports the stirring roller 31 and is coaxially mounted with the vacuum stirring cylinder 1, ensuring that the rotation center of the stirring roller 31 is consistent with the center of the stirring cylinder 1. The base 33 serves as the bottom support structure of the stirring device and is mounted to the roller shaft 32 via bearings, ensuring the stable rotation of the stirring roller 31. The scraper rod 34 is mounted on the base 33 and is tangent to the inner wall of the stirring cylinder 1, used to scrape off the material on the inner wall, ensuring that there are no dead corners in the stirring.

[0020] See Figure 1-2 The vacuum mixing drum 1 has a partition 13 at the top, and a temperature and humidity detector 14 is installed above the partition 13. The partition 13 has through holes. The partition 13 divides the internal space of the vacuum mixing drum 1 to prevent the material from directly contacting the temperature and humidity detector 14. The temperature and humidity detector 14 monitors the temperature and humidity inside the mixing drum 1 to ensure that the mixing process is carried out under suitable temperature and humidity conditions. This plays an important role in improving material performance and preventing material deterioration. The through holes are used for vacuuming, exhausting and ventilation inside the mixing drum 1.

[0021] See Figure 1-2 The cylinder cover 2 is provided with a handle 21, and a vacuum interface 22 is provided next to the handle 21. The handle 21 makes it convenient for operators to lift or move the cylinder cover, improving the convenience of operation. The vacuum interface 22 is used to connect to the vacuum system to ensure that the inside of the mixing cylinder can reach the required vacuum level.

[0022] See Figure 1-2 The stirring roller 31 is equipped with a spiral stirring blade 36 via a connecting rod. The stirring blade 36 is used to mix and stir the lithium battery cathode material, so as to evenly mix the components in the material. The stirring blade 36 is connected to the stirring roller 31 via the connecting rod, so that the stirring range of the stirring blade 36 is expanded and the stirring dead zone is avoided.

[0023] See Figure 1-2 The filter box 5 is equipped with a replaceable filter membrane 51; the replaceable filter membrane 51 is used to filter the material after stirring to ensure the purity of the material, and the replaceable design makes maintenance and cleaning more convenient.

[0024] See Figure 1-2 The filter membrane 51 has a mesh size of 120 mesh; this type of filter membrane can effectively filter out larger particles of impurities while allowing sufficiently small particles to pass through, ensuring that the filtered material meets the fineness requirements of lithium battery cathode materials.

[0025] According to the above embodiments, the working process of this utility model is as follows:

[0026] First, the lithium battery positive electrode material is added to the vacuum stirring drum 1. Then, the stirring roller 31 in the stirring device 3 is driven to rotate by the motor 4. The stirring roller is coaxially installed with the vacuum stirring drum via the roller shaft 32. At the same time, the scraper rod 34 is tangential to the inner wall of the stirring drum to ensure that there are no dead corners or uneven mixing during the stirring process. During the stirring process, the temperature and humidity detector 14 monitors the environment inside the drum to ensure suitable temperature and humidity conditions. After the stirring is completed, the material is discharged through the discharge pipe 12 and filtered through the 120-mesh filter membrane 51 in the filter box 5 to remove impurities and obtain pure positive electrode material. Throughout the process, the vacuum interface 22 on the drum cover 2 is connected to the vacuum system. After the ingredients are added to the vacuum stirring drum 1, the vacuum is drawn. When the vacuum degree inside the drum reaches the target value, the connection pipe between the vacuum interface 22 and the vacuum system is sealed by the vacuum valve. During the stirring process, the vacuum degree inside the drum is monitored at all times to ensure that the inside of the stirring drum is kept in a vacuum state, reduce material oxidation, and improve material dispersion.

[0027] The above-disclosed embodiments of the present invention are only for illustrating the present invention. The preferred embodiments do not describe all details exhaustively, nor do they limit the present invention to the specific implementations described. Many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A mixing and stirring device for lithium battery positive electrode materials, characterized in that: Includes a vacuum mixing drum (1), a drum cover (2), a mixing device (3), a motor (4), and a filter box (5); The vacuum mixing drum (1) is provided with a support (11) at the bottom, a drum cover (2) is provided at the top of the vacuum mixing drum (1), a stirring device (3) is provided inside the vacuum mixing drum (1), a motor (4) is installed at the bottom of the vacuum mixing drum (1), the power output end of the motor (4) is connected to the power input end of the stirring device (3), a discharge pipe (12) is provided at the bottom of the side wall of the vacuum mixing drum (1), and a filter box (5) is installed at the outlet of the discharge pipe (12). The stirring device (3) includes a stirring roller (31), a roller shaft (32), a base plate (33), and a scraper rod (34). The stirring roller (31) is coaxially installed with the vacuum stirring cylinder (1) via the roller shaft (32). A scraper arm (35) is provided at the top of the roller shaft (32). The bottom surface of the scraper arm (35) is tangent to the upper surface of the base plate (33). The base plate (33) and the roller shaft (32) are installed through bearings. The scraper rod (34) is installed on the base plate (33) and is tangent to the inner wall of the vacuum stirring cylinder (1).

2. The lithium battery positive electrode mixing and stirring device according to claim 1, characterized in that: The vacuum stirring cylinder (1) is provided with a detachable partition (13) at the top, and a temperature and humidity detector (14) is provided above the partition (13). The partition (13) has through holes.

3. The lithium battery positive electrode mixing and stirring device according to claim 1, characterized in that: The cap (2) is provided with a handle (21), and a vacuum port (22) is provided next to the handle (21).

4. The lithium battery positive electrode mixing and stirring device according to claim 1, characterized in that: The stirring roller (31) is equipped with spiral stirring blades (36) via a connecting rod.

5. The lithium battery positive electrode mixing and stirring device according to claim 1, characterized in that: The filter box (5) is equipped with a replaceable filter membrane (51).

6. The lithium battery positive electrode mixing and stirring device according to claim 5, characterized in that: The filter membrane (51) has a mesh size of 120.

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