Electric hydraulic compaction device for sodium ion positive electrode material sagger

Abstract

The utility model relates to an electric hydraulic compaction device for a sodium ion positive electrode material sagger. The electric hydraulic compaction device comprises a vibration platform, the sagger and a compaction device, the vibration platform comprises a vibration frame, an eccentric block and a vibration motor; the vibration motor and the eccentric block are both located in the vibration frame, the vibration frame is fixedly connected with the vibration motor, the eccentric block is fixedly connected with an output shaft of the vibration motor, and the point, connected with the vibration motor, of the eccentric block is not located on a center shaft of the eccentric block. And the saggar is mounted on the vibrating frame. The pressing device comprises a telescopic pressing column, the pressing column is located above the saggar, and one end of the pressing column can stretch into the saggar. The eccentric block is driven by the vibration motor to rotate, centrifugal force generated when the eccentric block rotates along with the shaft is converted into reciprocating force perpendicular to the direction of the rotating shaft, and therefore the vibration frame starts to vibrate, directional high-frequency vibration is generated, the fluidity of materials in the sagger can be improved, internal particles are promoted to be rearranged, gaps are reduced, and the compaction density is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of sodium battery material preparation technology, and in particular to an electro-hydraulic compaction device for sodium ion cathode material crucible. Background Technology

[0002] In the field of sodium-ion battery material preparation technology, sodium-ion battery materials must undergo sintering in a high-temperature furnace. During the sintering process, sodium-ion battery materials need to be placed in a crucible. Sodium-ion battery cathode materials, such as layered oxides, typically possess different physical and chemical properties. Compared to lithium-ion battery cathode materials, they may require adjustments to compaction conditions to accommodate their larger ionic radii. This includes selecting binders and conductive agents suitable for sodium ion transport and optimizing compaction parameters to maintain structural stability and electrochemical activity. The compaction degree of the material after crucible placement has a significant impact on the product performance of the cathode material. Appropriate compaction degree is crucial for improving the specific capacity, cycle stability, and rate performance of sodium-ion batteries. In existing technologies for compacting sodium-ion cathode materials, the uneven material distribution within the crucible makes it difficult to ensure uniformity and consistency in compaction. Therefore, precise control of the compaction process is necessary to achieve optimal compaction degree, pressing method, and pressure distribution to improve material compaction and uniformity, reduce voids, and optimize battery performance. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] This invention provides an electro-hydraulic compaction device for sodium ion cathode materials in a sagger, which aims to solve the technical problem of uneven material distribution in the sagger during the compaction process of sodium ion cathode materials in the prior art.

[0005] (II) Technical Solution

[0006] To solve the above problems, this utility model provides an electro-hydraulic compaction device for sodium ion cathode material crucibles, which includes: a vibration platform, a crucible, and a compaction device.

[0007] The vibration platform includes: a vibration frame, an eccentric block, and a vibration motor; the vibration motor and the eccentric block are both located inside the vibration frame, the vibration frame is fixedly connected to the vibration motor, the eccentric block is fixedly connected to the output shaft of the vibration motor, and the point on the eccentric block that is connected to the vibration motor is not on the central axis of the eccentric block;

[0008] The sagger is mounted on the vibration frame;

[0009] The clamping device includes a telescopic clamping column located above the sagger, with one end of the clamping column extending into the sagger.

[0010] Preferably, the clamping device includes a clamping plate and a clamping hydraulic cylinder;

[0011] One end of the clamping hydraulic cylinder is fixedly mounted on the clamping plate, and the piston rod of the clamping hydraulic cylinder is constructed as the clamping column.

[0012] Preferably, the clamping device further includes multiple support columns;

[0013] One end of the support column is mounted on the vibration frame, and the clamping plate is mounted on the other end of the support column.

[0014] Preferably, the oil inlet of the clamping hydraulic cylinder is connected to the hydraulic pump via a pipeline, and a pressure gauge is installed on the pipeline connecting the clamping hydraulic cylinder and the hydraulic pump.

[0015] Preferably, the vibration frame is provided with four support columns.

[0016] Preferably, the vibration platform further includes a reinforcing plate;

[0017] The reinforcing plate protrudes from the vibration frame, and the sagger is mounted on the reinforcing plate.

[0018] Preferably, a pressure head is provided on the end of the clamping column facing the crucible.

[0019] (III) Beneficial Effects

[0020] This invention uses a vibrating motor to drive an eccentric block to rotate. The centrifugal force generated by the eccentric block rotating with the shaft is converted into a reciprocating force perpendicular to the shaft, thus initiating vibration of the vibrating frame. This improves the flowability of the material inside the crucible, promotes the rearrangement of internal particles, reduces voids, and enhances compaction density. Furthermore, the control system can adjust the motor speed, thereby changing the rotational speed of the eccentric block and achieving the purpose of regulating the vibration frequency and amplitude. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the sodium ion cathode material crucible electro-hydraulic compaction device of this utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of the vibration platform in this utility model.

[0023] [Explanation of Labels in the Attached Image]

[0024] 1: Vibration platform; 11: Vibration frame; 12: Eccentric block; 13: Vibration motor; 14: Reinforcing plate; 2: Sagger; 3: Clamping device; 31: Clamping column; 32: Clamping plate; 33: Support column; 34: Clamping head. Detailed Implementation

[0025] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0027] Furthermore, in this utility model, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] This invention provides an electro-hydraulic compaction device for a sodium-ion cathode material crucible 2. The device includes a vibration platform 1, a crucible 2, and a clamping device 3. The vibration platform 1 includes a vibration frame 11, an eccentric block 12, and a vibration motor 13. Both the vibration motor 13 and the eccentric block 12 are located within the vibration frame 11. The vibration frame 11 is fixedly connected to the vibration motor 13, and the eccentric block 12 is fixedly connected to the output shaft of the vibration motor 13. The connection point between the eccentric block 12 and the vibration motor 13 is not on the central axis of the eccentric block 12. The crucible 2 is mounted on the vibration frame 11. The clamping device 3 includes a retractable clamping column 31 located above the crucible 2, with one end of the column extending into the crucible 2.

[0030] This invention uses a vibrating motor 13 to drive an eccentric block 12 to rotate. The centrifugal force generated by the rotation of the eccentric block 12 is converted into a reciprocating force perpendicular to the axis of rotation, thereby causing the vibrating frame 11 to vibrate and generating directional high-frequency vibration. This can improve the flowability of the material in the crucible 2, promote the rearrangement of internal particles, reduce voids, and enhance compaction density. Furthermore, the motor speed can be adjusted by the control system, thereby changing the rotational speed of the eccentric block 12 and achieving the purpose of adjusting the vibration frequency and amplitude.

[0031] Furthermore, the clamping device 3 includes a clamping plate 32 and a clamping hydraulic cylinder. One end of the clamping hydraulic cylinder is fixedly mounted on the clamping plate 32, and the piston rod of the clamping hydraulic cylinder is constructed as a clamping column 31. In this solution, the clamping hydraulic cylinder is used as a power source to compact the material inside the crucible 2, ensuring stable and controllable power output. By precisely controlling the pressure and compaction process, high uniformity and consistent compaction of the internal structure of the material can be achieved. This reduces the uneven compaction caused by human factors, thereby improving the performance and reliability of the cathode material.

[0032] In a preferred embodiment, the clamping device 3 further includes multiple support columns 33. One end of each support column 33 is mounted on the vibrating frame 11, and the clamping plate 32 is mounted on the other end of the support column 33.

[0033] Furthermore, the oil inlet of the clamping hydraulic cylinder is connected to the hydraulic pump via a pipeline, and a pressure gauge is installed on the pipeline connecting the clamping hydraulic cylinder and the hydraulic pump. A variable displacement piston pump or a fixed displacement vane pump is typically used, driven by an electric motor, to convert mechanical energy into the potential and kinetic energy of the hydraulic oil. The variable displacement pump can adjust the output flow rate and pressure according to actual needs to adapt to the force and speed requirements at different stages of the compaction process. For cathode materials with different particle size distributions and physical properties, parameters can be adjusted to better adapt to the material characteristics and ensure the compaction effect. Compared with existing technologies, this invention provides a more uniform, efficient, safe, and repeatable compaction process for cathode materials, offering significant advantages for improving the overall performance and production efficiency of sodium-ion batteries.

[0034] Finally, four support columns 33 are provided on the vibration frame 11. The vibration platform 1 also includes a reinforcing plate 14. The reinforcing plate 14 protrudes from the vibration frame 11, and the sagger 2 is mounted on the reinforcing plate 14. A pressure head 34 is provided on the end of the clamping column 31 facing the sagger 2. The shape of the pressure head 34 is the same as the cross-section of the cavity inside the sagger 2, so that the pressure head 34 can smoothly enter the sagger 2 and compact the material inside the sagger 2.

[0035] It should be understood that the above description of the specific embodiments of this utility model is only for illustrating the technical route and features of this utility model, and its purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. However, this utility model is not limited to the specific embodiments described above. All changes or modifications made within the scope of the claims of this utility model should be covered by the protection scope of this utility model.

Claims

1. A sodium ion cathode material crucible electro-hydraulic compaction device, characterized in that, The electro-hydraulic compaction device for the sodium ion cathode material crucible (2) includes: a vibration platform (1), a crucible (2), and a compaction device (3); The vibration platform (1) includes: a vibration frame (11), an eccentric block (12), and a vibration motor (13); the vibration motor (13) and the eccentric block (12) are both located inside the vibration frame (11), the vibration frame (11) is fixedly connected to the vibration motor (13), the eccentric block (12) is fixedly connected to the output shaft of the vibration motor (13), and the point on the eccentric block (12) connected to the vibration motor (13) is not on the central axis of the eccentric block (12); The sagger (2) is mounted on the vibration frame (11); The clamping device (3) includes a telescopic clamping column (31) located above the sagger (2), and one end of the clamping column (31) can extend into the sagger (2); The vibration platform (1) also includes a reinforcing plate (14); The reinforcing plate (14) protrudes from the vibration frame (11), and the sagger (2) is disposed on the reinforcing plate (14).

2. The sodium ion cathode material crucible electro-hydraulic compaction device as described in claim 1, characterized in that, The clamping device (3) includes a clamping plate (32) and a clamping hydraulic cylinder; One end of the clamping hydraulic cylinder is fixedly mounted on the clamping plate (32), and the piston rod of the clamping hydraulic cylinder is constructed as the clamping column (31).

3. The sodium ion cathode material crucible electro-hydraulic compaction device as described in claim 2, characterized in that, The clamping device (3) also includes multiple support columns (33); One end of the support column (33) is mounted on the vibration frame (11), and the clamping plate (32) is mounted on the other end of the support column (33).

4. The sodium ion cathode material crucible electro-hydraulic compaction device as described in claim 3, characterized in that, The oil inlet of the clamping hydraulic cylinder is connected to the hydraulic pump via a pipeline, and a pressure gauge is installed on the pipeline connecting the clamping hydraulic cylinder and the hydraulic pump.

5. The sodium ion cathode material crucible electro-hydraulic compaction device as described in claim 3, characterized in that, The vibration frame (11) is provided with four support columns (33).

6. The electro-hydraulic compaction device for the sodium ion cathode material crucible (2) as described in any one of claims 1 to 5, characterized in that, A pressure head (34) is provided on one end of the clamping column (31) facing the sagger (2).

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