Uniform dispersing device for lithium battery positive electrode material mixing

Abstract

The utility model relates to the technical field of lithium battery processing, in particular to a uniform dispersing device for mixing lithium battery positive electrode materials, which comprises a uniform dispersing barrel for mixing the lithium battery positive electrode materials, and a stirring mechanism is mounted at the bottom in the uniform dispersing barrel. According to the utility model, a space foundation for mixing is provided through the arranged uniform dispersing barrel, and the servo motor in the center of the bottom of the uniform dispersing barrel can provide a power source for the stirring mechanism; a support at the edge of the bottom surface of the uniform dispersion barrel ensures the overall stability of the device, a stirring chassis in the stirring mechanism is composed of rotating ring seats and rotating shafts which are different in diameter and are coaxially arranged, multiple groups of stirring vertical shafts improve the stirring efficiency and effect, and connecting cross frames between the adjacent rotating ring seats enhance the structural strength of the stirring chassis; a connecting screw hole in the outer wall of the top of the rotating ring seat is matched with a threaded connector at the bottom of the stirring vertical shaft, so that the stirring vertical shaft can be replaced, and a proper stirring vertical shaft combination can be selected according to different mixing requirements.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery processing technology, specifically to a uniform dispersion device for mixing lithium battery cathode materials. Background Technology

[0002] Lithium-ion batteries, widely used energy storage devices in modern society, have performance closely related to the quality of their cathode materials. The uniformity of cathode material mixing directly affects key indicators of lithium-ion batteries, such as electrochemical performance, charge / discharge efficiency, and lifespan. Therefore, developing efficient and precise lithium-ion battery cathode material mixing technology is of great significance for improving lithium-ion battery quality and promoting the development of the new energy industry. Traditional lithium-ion battery cathode material mixing equipment often uses simple stirring blades, which makes it difficult to achieve comprehensive and uniform dispersion of materials during the mixing process. Especially for raw materials with large differences in particle size and flowability, local agglomeration or stratification can easily occur, resulting in a final mixture that fails to meet the production requirements of high-performance lithium-ion batteries. Different types of lithium-ion battery cathode materials (such as lithium iron phosphate and ternary materials) differ in particle size, density, and viscosity, and fixed stirring components cannot be flexibly adapted, affecting mixing effects and production efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a uniform dispersion device for mixing lithium battery cathode materials, so as to solve the problem of insufficient uniformity in the mixing of existing lithium battery cathode materials mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A uniform dispersion device for mixing lithium battery cathode materials includes a uniform dispersion cylinder for mixing lithium battery cathode materials. A stirring mechanism is installed at the bottom of the uniform dispersion cylinder, a servo motor is installed at the center of the bottom of the uniform dispersion cylinder, and at least three sets of uniformly and equidistantly arranged supports are installed on the bottom edge of the uniform dispersion cylinder.

[0006] The stirring mechanism includes a stirring base and several sets of replaceable stirring vertical shafts. The stirring base includes several sets of rotating ring seats of different diameters and coaxially arranged, and a rotating shaft located at the center. Adjacent sets of rotating ring seats are connected by at least three sets of connecting crossbars. Several sets of evenly spaced connecting screw holes are opened on the top outer wall of each set of rotating ring seats. The bottom of the stirring vertical shaft is coaxially installed with a threaded connector that matches the size of the connecting screw holes and is threadedly connected.

[0007] Preferably, the rotating shaft is also connected to the innermost rotating ring seat by at least three sets of connecting crossbars.

[0008] Preferably, a sealed bearing for fixing the rotating shaft is embedded in the center of the bottom surface of the uniform dispersion cylinder.

[0009] Preferably, the bottom surface of the rotating shaft has a plug hole at its center, and the size of the motor shaft of the servo motor is compatible with the size of the plug hole on the bottom surface of the rotating shaft and they are plugged in.

[0010] Preferably, the top of the motor shaft and the bottom of the shaft have square cross-sections for their insertion holes.

[0011] Preferably, the servo motor is equipped with a connecting plate for connecting to the outer wall of the bottom of the uniform dispersion cylinder.

[0012] Preferably, a sealing cap is installed on the top of the uniform dispersion cylinder, and a pull ring is installed at the center of the top surface of the sealing cap.

[0013] Compared with existing technologies, the beneficial effects of this utility model are:

[0014] 1. In this uniform dispersion device for mixing lithium battery cathode materials, a uniform dispersion cylinder provides the spatial foundation for mixing, and a servo motor at the bottom center provides the power source for the stirring mechanism. The support at the bottom edge of the uniform dispersion cylinder ensures the overall stability of the device. The stirring base in the stirring mechanism consists of rotating ring seats of different diameters and coaxially arranged rotating shafts. Multiple sets of stirring shafts improve stirring efficiency and effect, and the connecting crossbar between adjacent rotating ring seats enhances the structural strength of the stirring base. The connecting screw holes on the top outer wall of the rotating ring seats are compatible with the threaded connectors at the bottom of the stirring shafts, allowing for the replacement of the stirring shafts. This enables the selection of appropriate stirring shaft combinations according to different mixing requirements, allowing the device to efficiently and uniformly mix lithium battery cathode materials, meeting the needs of different production scenarios and improving the practicality and flexibility of the device.

[0015] 2. In this uniform dispersion device for mixing lithium battery cathode materials, the rotating shaft and the innermost rotating ring seat are also connected by at least three sets of connecting crossbars. Through the setting of the connecting crossbars, a stable connection structure is formed between the rotating shaft and the innermost rotating ring seat. During the mixing process, it can ensure that the power of the rotating shaft is better transmitted to the innermost rotating ring seat, which enhances the stability of the overall structure of the mixing chassis and the effectiveness of power transmission, and avoids the situation of loose structure or poor power transmission during the mixing process.

[0016] 3. In this uniform dispersion device for mixing lithium battery cathode materials, a sealing cap is installed on the top of the uniform dispersion cylinder, and a pull ring is installed at the center of the top surface of the sealing cap. The sealing cap creates a relatively closed space in the uniform dispersion cylinder during the mixing process, preventing materials from splashing out during stirring, and also preventing external impurities from entering the cylinder and affecting the mixing quality. The pull ring makes it convenient for operators to open and close the sealing cap, improving the ease of operation. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are explained in detail together with the embodiments of the present invention, but do not constitute a limitation thereof.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a cross-sectional exploded view of the present invention;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the mixing base of this utility model;

[0021] 10. Uniform dispersion cylinder; 11. Sealed bearing;

[0022] 20. Bracket;

[0023] 30. Sealing cap; 31. Pull ring;

[0024] 40. Mixing base; 41. Mixing vertical shaft; 42. Threaded connector; 43. Rotating shaft; 44. Rotating ring seat; 45. Connecting crossbar; 46. Connecting screw hole;

[0025] 50. Servo motor; 51. Connecting plate; 52. Motor shaft. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments and accompanying drawings. 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.

[0027] In the description of this utility model, it should be understood that the terms "center", "vertical", "horizontal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of this utility model and to simplify the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] A uniform dispersion device for mixing lithium battery cathode materials, such as Figures 1-3 As shown, the device includes a uniform dispersion cylinder 10 for mixing lithium battery cathode materials. A stirring mechanism is installed at the bottom of the uniform dispersion cylinder 10, and a servo motor 50 is installed at the center of the bottom of the uniform dispersion cylinder 10. At least three sets of evenly spaced supports 20 are installed on the bottom edge of the uniform dispersion cylinder 10. The stirring mechanism includes a stirring base 40 and several sets of replaceable stirring shafts 41. The stirring base 40 includes several sets of rotating ring seats 44 of different diameters and coaxially arranged, and a rotating shaft 43 located at the center. Adjacent sets of rotating ring seats 44 are connected by at least three sets of connecting crossbars 45. Several sets of evenly spaced connecting screw holes 46 are opened on the top outer wall of each set of rotating ring seats 44. The bottom of the stirring shaft 41 is coaxially installed with a threaded connector 42 that matches the size of the connecting screw holes 46 and is threadedly connected. The uniform dispersion cylinder 10 provides a spatial basis for mixing materials, and the servo motor 50 at the center of its bottom can provide a power source for the stirring mechanism. The supports 20 on the bottom edge of the uniform dispersion cylinder 10 ensure the overall stability of the device. The mixing base 40 in the mixing mechanism consists of rotating ring seats 44 of different diameters and coaxially arranged rotating shafts 43. Multiple sets of mixing vertical shafts 41 improve mixing efficiency and effect. The connecting crossbars 45 between adjacent rotating ring seats 44 enhance the structural strength of the mixing base 40. The connecting screw holes 46 on the top outer wall of the rotating ring seats 44 are adapted to the threaded connectors 42 at the bottom of the mixing vertical shafts 41, which allows the mixing vertical shafts 41 to be replaced. This enables the selection of appropriate combinations of mixing vertical shafts 41 according to different mixing requirements, allowing the device to efficiently and uniformly mix lithium battery cathode materials, meet the needs of different production scenarios, and improve the practicality and flexibility of the device.

[0029] It is worth noting that the rotating shaft 43 is also connected to the innermost rotating ring seat 44 by at least three sets of connecting crossbars 45. The connecting crossbars 45 ensure a stable connection between the rotating shaft 43 and the innermost rotating ring seat 44. During the mixing process, this ensures that the power of the rotating shaft 43 is better transmitted to the innermost rotating ring seat 44, thereby enhancing the stability of the overall structure of the mixing chassis 40 and the effectiveness of power transmission. This prevents the structure from becoming loose or the power transmission from being poor during the mixing process.

[0030] Furthermore, a sealed bearing 11 for fixing the rotating shaft 43 is embedded in the center of the bottom surface of the uniform dispersion cylinder 10. The sealed bearing 11 ensures that the rotating shaft 43 can be stably supported and positioned when rotating, reducing shaking and friction loss during the rotation process.

[0031] Specifically, a plug-in hole is provided at the center of the bottom surface of the rotating shaft 43. The size of the motor shaft 52 of the servo motor 50 is compatible with the plug-in hole on the bottom surface of the rotating shaft 43 and they are plugged in. The top of the motor shaft 52 and the bottom surface of the plug-in hole of the rotating shaft 43 are both square. Through the plug-in connection method and the square cross-section design, the power of the servo motor 50 can be accurately and efficiently transmitted to the rotating shaft 43, avoiding slippage during power transmission and ensuring the reliability and stability of the stirring mechanism rotation, thereby contributing to the uniform dispersion of lithium battery cathode materials.

[0032] The servo motor 50 is equipped with a connecting plate 51 for connecting to the bottom outer wall of the uniform dispersion cylinder 10, so that the servo motor 50 can be firmly installed at the bottom of the uniform dispersion cylinder 10, ensuring the stability of the servo motor 50 during operation and preventing the motor from loosening due to vibration or other reasons during operation, which would affect the stirring effect and the normal operation of the equipment.

[0033] In addition, a sealing cover 30 is installed on the top of the uniform dispersion cylinder 10, and a pull ring 31 is installed at the center of the top surface of the sealing cover 30. The sealing cover 30 makes the uniform dispersion cylinder 10 form a relatively closed space during the mixing process, preventing the material from splashing out during the stirring process, and also preventing external impurities from entering the cylinder and affecting the mixing quality. The pull ring 31 makes it convenient for operators to open and close the sealing cover 30, improving the ease of operation.

[0034] The working principle of this uniform dispersion device for mixing lithium battery cathode materials is as follows:

[0035] First, based on the characteristics of the lithium battery cathode material and the mixing requirements, select an appropriate number and specification of stirring shafts 41, and thread the threaded connector 42 at the bottom of the shaft to the connecting screw hole 46 on the top outer wall of the rotating ring seat 44 on the stirring base 40 to complete the assembly of the stirring mechanism.

[0036] Next, the sealing cap 30 at the top of the uniform dispersion cylinder 10 is opened by pulling ring 31, and the lithium battery positive electrode material to be mixed is placed into the uniform dispersion cylinder 10; then, the sealing cap 30 is put back on the top of the uniform dispersion cylinder 10 to ensure the sealing of the mixing process.

[0037] Then, the servo motor 50 is started. The motor shaft 52 of the servo motor 50 and the rotating shaft 43 are connected through the square cross-section insertion hole to transmit power to the stirring base 40, which drives the rotating ring seat 44 and the stirring vertical shaft 41 to rotate, and stir and disperse the material in the cylinder. During the stirring process, the sealed bearing 11 at the center of the bottom surface of the uniform dispersion cylinder 10 can fix the rotating shaft 43, reducing friction and shaking during rotation.

[0038] After mixing is complete, turn off the servo motor 50, open the sealing cover 30 again through the pull ring 31, and take out the mixed lithium battery positive electrode material. If it is necessary to replace the stirring shaft 41 to adapt to different mixing requirements, it can be removed from the stirring base 40 for replacement. Throughout the process, the bracket 20 provides stable support for the uniform dispersion cylinder 10.

[0039] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A uniform dispersion device for lithium battery positive electrode material mixing, comprising a uniform dispersion cylinder (10) for lithium battery positive electrode material mixing, characterized in that: The uniform dispersion cylinder (10) is provided with a stirring mechanism at the bottom, a servo motor (50) is installed at the center of the bottom of the uniform dispersion cylinder (10), and at least three groups of uniformly equidistantly arranged supports (20) are installed at the bottom edge of the uniform dispersion cylinder (10). The stirring mechanism comprises a stirring base plate (40) and a plurality of groups of replaceable stirring vertical shafts (41), the stirring base plate (40) comprises a plurality of groups of rotating ring seats (44) with different diameters and coaxially arranged and a rotating shaft (43) at the center, at least three groups of connecting cross frames (45) are arranged between two adjacent groups of rotating ring seats (44), a plurality of groups of uniformly equidistantly arranged connecting screw holes (46) are formed in the top outer wall of each group of rotating ring seats (44), and a threaded connector (42) with a size matched with that of the connecting screw hole (46) and in threaded connection is coaxially installed at the bottom of the stirring vertical shaft (41).

2. The uniform dispersion device for mixing lithium battery positive electrode material according to claim 1, characterized in that: The rotating shaft (43) and the innermost rotating ring seat (44) are also connected by at least three groups of connecting cross frames (45).

3. The uniform dispersion device for mixing lithium battery positive electrode material according to claim 1, characterized in that: A sealing bearing (11) for fixing the rotating shaft (43) is embedded at the center of the bottom of the uniform dispersion cylinder (10).

4. The uniform dispersion device for mixing lithium battery positive material according to claim 1, characterized in that: A plug-in hole is formed at the center of the bottom of the rotating shaft (43), and a motor rotating shaft (52) of the servo motor (50) is matched in size with the bottom plug-in hole of the rotating shaft (43) and is in plug-in cooperation.

5. The uniform dispersion device for mixing lithium battery positive electrode material according to claim 4, characterized in that: The top of the motor rotating shaft (52) and the bottom plug-in hole of the rotating shaft (43) are both square in cross section.

6. The uniform dispersion device for mixing lithium battery cathode material according to claim 1, wherein: A connecting disc (51) for being connected to the bottom outer wall of the uniform dispersion cylinder (10) is installed on the servo motor (50).

7. The uniform dispersion device for mixing lithium battery cathode material according to claim 1, wherein: A sealing cover (30) is installed at the top of the uniform dispersion cylinder (10), and a pull ring (31) is installed at the center of the top of the sealing cover (30).

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