Surface modification device for a positive electrode material

Abstract

The utility model relates to battery material processing technical field discloses a kind of surface modification devices of positive electrode material, including modification box, modification box top is fixedly connected with fixed frame, the fixed frame bottom is provided with deflection mechanism, modification box inside is provided with fixed frame, the fixed frame is connected with deflection mechanism, the fixed frame inside slidingly connected with placing box, the fixed frame side wall is provided with fixed mechanism;The deflection mechanism includes pivot, pivot side wall rotationally connected in the fixed frame inside, the fixed frame top is fixedly connected with motor.In the utility model, through motor drives bent plate rotation, and then push link frame moves, and through fixed block drives pivot repeatedly deflects, so that connecting column drives fixed frame synchronous movement, so that material is back and forth in modification solution, to contact modification solution sufficiently, effectively promote modification reaction to carry out fully, to enhance the performance uniformity and modification effect of positive electrode material.

Description

Technical Field

[0001] This utility model relates to the field of battery material processing technology, and in particular to a surface modification device for cathode materials. Background Technology

[0002] Cathode materials play a crucial role in energy storage components such as lithium-ion batteries and capacitors, and their electrochemical performance directly determines the energy density, rate capability, and cycle life of the entire device. To enhance the intrinsic activity of cathode materials, suppress interfacial side reactions, and improve conductivity and structural stability, the industry commonly performs surface modification treatment on the powder before it leaves the factory. Surface modification devices typically integrate multiple unit modules such as heating, coating, encapsulation, mixing, and drying. They can uniformly deposit conductive carbon, metal oxides, solid electrolytes, or functional polymers onto the surface of cathode material particles under controlled atmosphere, temperature, and environment, thereby forming a dense and continuous protective layer while maintaining the integrity of the particle's bulk lattice.

[0003] Existing surface modification devices for cathode materials mostly employ equipment such as rotary kilns, fluidized beds, and spray dryers to achieve modification processes such as heating coating, reaction deposition, or drying molding. However, in existing technologies, cathode materials are mostly in static contact with the modification solution during the modification process, resulting in limited contact efficiency and uniformity between the material and the modification medium. This leads to insufficient modification of some particles, thereby affecting the overall performance consistency. Therefore, a surface modification device for cathode materials is proposed to solve the above problems. Summary of the Invention

[0004] To overcome the above shortcomings, this utility model provides a surface modification device for cathode materials, which aims to improve the problem that the limited contact efficiency and uniformity between the material and the modification medium in the prior art leads to insufficient modification of some particles.

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

[0006] A surface modification device for a positive electrode material includes a modification box, a fixing frame fixedly connected to the top of the modification box, a deflection mechanism provided at the bottom of the fixing frame, a fixing frame provided inside the modification box, the fixing frame being connected to the deflection mechanism, a placement box being slidably connected inside the fixing frame, and a fixing mechanism provided on the side wall of the fixing frame.

[0007] The deflection mechanism includes a rotating shaft, the side wall of which is rotatably connected to the inside of a fixed frame. A motor is fixedly connected to the top of the fixed frame. The output end of the motor passes through the fixed frame and is fixedly connected to a bent plate. A fixed block is fixedly connected to the side wall of the rotating shaft. A connecting frame is rotatably connected to the side wall of the fixed block. One side of the bent plate is rotatably connected to the side wall of the fixed block. A connecting column is fixedly connected to the side wall of the rotating shaft. The bottom of the connecting column is fixedly connected to the side wall of the fixed frame.

[0008] As a further description of the above technical solution:

[0009] The fixing mechanism includes a fixing bolt and a recessed hole inside the placement box. A rotating column is rotatably connected to the side wall of the fixing frame, and a side plate is rotatably connected to the side wall of the rotating column. The side wall of the fixing bolt is slidably connected inside the side plate and inside the recessed hole.

[0010] As a further description of the above technical solution:

[0011] A connecting ring is fixedly connected to the side wall of the fixing bolt, and a spring is sleeved on the outside of the fixing bolt.

[0012] As a further description of the above technical solution:

[0013] One end of the spring is fixedly connected to the side wall of the connecting ring, and the other end of the spring is fixedly connected to the side wall of the side plate.

[0014] As a further description of the above technical solution:

[0015] A baffle is fixedly connected to the side wall of the fixed frame, and the baffle is in contact with the placement box.

[0016] As a further description of the above technical solution:

[0017] A guide frame is fixedly connected to the top of the modification box, and a slider is slidably connected to the side wall of the guide frame, with the bottom of the slider in contact with the modification box.

[0018] As a further description of the above technical solution:

[0019] The top of the slider and the side wall of the fixed frame are both fixedly connected to hinge frames, and the hinge frames are rotatably connected to each other.

[0020] As a further description of the above technical solution:

[0021] The modified box is provided with a hydraulic rod on its side wall, and the output end of the hydraulic rod is fixedly connected to a side lug. The side lug is fixedly connected to the side wall of the fixing frame.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the bending plate is driven to rotate by the motor, which in turn pushes the connecting frame to move. The rotating shaft is driven to deflect repeatedly by the fixing block, so that the connecting column drives the fixing frame to move synchronously, causing the material to sway back and forth in the modification solution, thereby fully contacting the modification solution. Through the cooperation between the above structures, the modification reaction is effectively promoted, thereby improving the uniformity of the cathode material's performance and the modification effect.

[0024] 2. In this utility model, after the material modification is completed, the fixed frame can be moved upward by starting the hydraulic rod, so that the placement box is moved out of the modification box. Then, the fixing bolt is pulled to compress the spring, so that the fixing bolt is disengaged from the concave hole, thereby releasing the restriction on the placement box. Then, the placement box can be pulled out of the fixed frame by the handle, which is convenient for collecting the modified material. Through the cooperation between the above structures, the placement box can be easily disassembled, reducing the difficulty of material collection. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of a surface modification device for a cathode material proposed in this utility model.

[0026] Figure 2 This is a schematic diagram of the fixing frame of a surface modification device for positive electrode materials proposed in this utility model.

[0027] Figure 3 This is a schematic diagram of the fixing frame of a surface modification device for positive electrode materials proposed in this utility model.

[0028] Figure 4 This is a schematic diagram of the placement box of a surface modification device for positive electrode materials proposed in this utility model.

[0029] Figure 5 for Figure 3 Enlarged view of point A in the middle.

[0030] Figure 6 This is a side view of a surface modification device for a cathode material proposed in this utility model.

[0031] Legend:

[0032] 1. Modification box; 2. Fixing frame; 3. Motor; 4. Bend plate; 5. Rotating shaft; 6. Fixing block; 7. Connecting frame; 8. Connecting column; 9. Fixing frame; 10. Baffle; 11. Placement box; 12. Recessed hole; 13. Rotating column; 14. Side plate; 15. Fixing bolt; 16. Connecting ring; 17. Spring; 18. Hydraulic rod; 19. Side lug; 20. Guide frame; 21. Slider; 22. Hinge frame; 23. Connecting rod. Detailed Implementation

[0033] 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.

[0034] Reference Figure 1 , Figure 2 and Figure 6 This utility model provides an embodiment of a surface modification device for positive electrode materials, including a modification box 1. A fixing frame 2 is fixedly connected to the top of the modification box 1, and a deflection mechanism is provided at the bottom of the fixing frame 2. A fixing frame 9 is provided inside the modification box 1, and the fixing frame 9 is connected to the deflection mechanism. The deflection mechanism can drive the fixing frame 9 to shake inside the modification box 1, so that the positive electrode material can fully contact the modification solution. A placement box 11 is slidably connected inside the fixing frame 9. The placement box 11 is used to hold the positive electrode material to be modified, which facilitates the unified processing and replacement of the material. The side wall of the fixing frame 9 is provided with... A fixing mechanism is provided to stabilize the placement box 11 and prevent it from shaking during movement. The deflection mechanism includes a rotating shaft 5, whose side wall is rotatably connected to the inside of the fixing frame 2, used to drive the rotation of the fixing frame 9. A motor 3 is fixedly connected to the top of the fixing frame 2, and the output end of the motor 3 passes through the fixing frame 2 and is fixedly connected to a bent plate 4. A fixing block 6 is fixedly connected to the side wall of the rotating shaft 5, and the fixing block 6 serves as a rotation fulcrum. A connecting frame 7 is rotatably connected to the side wall of the fixing block 6. One side of the bent plate 4 is rotatably connected to the side wall of the fixing block 6. After the motor 3 is started, the motor 3 drives the bent plate 4 to rotate. The rotating motion drives the connecting frame 7 to reciprocate in a deflecting manner at one end of the bending plate 4. A connecting column 8 is fixedly connected to the side wall of the rotating shaft 5, and the bottom of the connecting column 8 is fixedly connected to the side wall of the fixed frame 9. When the rotating shaft 5 deflects, the connecting column 8 will drive the fixed frame 9 to move synchronously, allowing the material placed inside to repeatedly sway in the modification solution, improving the contact efficiency and permeability between the material and the solution, thereby enhancing the modification effect. A guide frame 20 is fixedly connected to the top of the modification box 1, and a slider 21 is slidably connected to the side wall of the guide frame 20. The bottom of the slider 21 is in contact with the modification box 1, and the top of the slider 21 is in contact with... Hinged frames 22 are fixedly connected to the side walls of the fixed frame 2. Connecting rods 23 are rotatably connected between the hinged frames 22. A hydraulic rod 18 is provided on the side wall of the modification box 1. A side ear 19 is fixedly connected to the output end of the hydraulic rod 18. The side wall of the side ear 19 is fixedly connected to the side wall of the fixed frame 2. After the modification treatment is completed, the hydraulic rod 18 is pushed upward by controlling it, so that the fixed frame 2 and all the upper structures connected to it move upward as a whole, driving the slider 21 to slide smoothly along the guide frame 20. The connecting rod 23 supports and guides the movement trajectory, ensuring the stability and overall structural coordination during the operation of the device.

[0035] Reference Figure 3 , Figure 4 and Figure 5The fixing mechanism includes a fixing bolt 15 and a recess 12 opened inside the placement box 11. A rotating column 13 is rotatably connected to the side wall of the fixing frame 9, and a side plate 14 is rotatably connected to the side wall of the rotating column 13. The side plate 14 can rotate on the fixing frame 9 through the rotating column 13. The side wall of the fixing bolt 15 is slidably connected to the inside of the side plate 14 and the side wall of the fixing bolt 15 is slidably connected to the inside of the recess 12. By inserting the fixing bolt 15 into the inside of the recess 12, the placement box 11 is restricted, preventing it from detaching from the inside of the fixing frame 9 while shaking. A connecting ring 16 is fixedly connected to the side wall of the fixing bolt 15, and a spring 17 is sleeved on the outside of the fixing bolt 15. One end of the spring 17 is fixedly connected to the side wall of the connecting ring 16, and the other end of the spring 17 is fixedly connected to the side wall of the side plate 14. The spring 17 serves to support the fixing bolt 15. A baffle 10 is fixedly connected to the side wall of the fixing frame 9. The baffle 10 fits against the placement box 11 to ensure the accuracy of the position of the placement box 11.

[0036] Working principle: When using this equipment to modify the positive electrode material, the material can be placed inside the placement box 11, and then a modification solution is added to the modification box 1 to immerse the material in the modification solution. Then, the motor 3 is started to drive the bending plate 4 to rotate, which in turn drives the connecting frame 7 to move. When the connecting frame 7 moves, it will first drive the rotating shaft 5 to deflect through the fixing block 6. Then the connecting frame 7 will rotate on the surface of the fixing block 6, and finally drive the rotating shaft 5 to reset. As the bending plate 4 continues to rotate, the rotating shaft 5 deflects back and forth, which in turn drives the fixing frame 9 to move synchronously through the connecting column 8, so that the material shakes inside the modification solution and fully releases the modification solution.

[0037] After the material modification is completed, the side ear 19 can be moved upward by activating the hydraulic rod 18, and the fixing frame 2 can be moved upward simultaneously. While the fixing frame 2 is moving, the slider 21 will slide along the guide frame 20, and the connecting rod 23 will also deflect between the hinge frame 22 to ensure the stability of the fixing frame 2. When the placement box 11 is removed from the modification box 1, the fixing bolt 15 can be pulled to compress the spring 17, so that the fixing bolt 15 is disengaged from the concave hole 12, and the placement box 11 is unrestricted. At this time, the placement box 11 can be pulled out from the inside of the fixing frame 9 by the handle, which is convenient for collecting the modified material.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A surface modification device for a positive electrode material, comprising a modification box (1), characterized in that: The top of the modified box (1) is fixedly connected to a fixed frame (2), the bottom of the fixed frame (2) is provided with a deflection mechanism, the inside of the modified box (1) is provided with a fixed frame (9), the fixed frame (9) is connected to the deflection mechanism, the inside of the fixed frame (9) is slidably connected to a placement box (11), and the side wall of the fixed frame (9) is provided with a fixing mechanism. The deflection mechanism includes a rotating shaft (5), the side wall of which is rotatably connected to the inside of a fixed frame (2), a motor (3) is fixedly connected to the top of the fixed frame (2), the output end of the motor (3) passes through the fixed frame (2) and is fixedly connected to a bent plate (4), a fixed block (6) is fixedly connected to the side wall of the rotating shaft (5), a connecting frame (7) is rotatably connected to the side wall of the fixed block (6), one side of the bent plate (4) is rotatably connected to the side wall of the fixed block (6), a connecting column (8) is fixedly connected to the side wall of the rotating shaft (5), and the bottom of the connecting column (8) is fixedly connected to the side wall of the fixed frame (9).

2. The surface modification device for a cathode material according to claim 1, characterized in that: The fixing mechanism includes a fixing bolt (15) and a recess (12) opened inside the placement box (11). The side wall of the fixing frame (9) is rotatably connected to a rotating column (13). The side wall of the rotating column (13) is rotatably connected to a side plate (14). The side wall of the fixing bolt (15) is slidably connected inside the side plate (14). The side wall of the fixing bolt (15) is slidably connected inside the recess (12).

3. The surface modification device for a positive electrode material according to claim 2, characterized in that: The fixing bolt (15) is fixedly connected to the side wall with a connecting ring (16), and a spring (17) is sleeved on the outside of the fixing bolt (15).

4. The surface modification device for a cathode material according to claim 3, characterized in that: One end of the spring (17) is fixedly connected to the side wall of the connecting ring (16), and the other end of the spring (17) is fixedly connected to the side wall of the side plate (14).

5. The surface modification device for a cathode material according to claim 1, characterized in that: A baffle (10) is fixedly connected to the side wall of the fixed frame (9), and the baffle (10) is in contact with the placement box (11).

6. The surface modification device for a positive electrode material according to claim 1, characterized in that: The top of the modified box (1) is fixedly connected to a guide frame (20), and a slider (21) is slidably connected to the side wall of the guide frame (20). The bottom of the slider (21) is in contact with the modified box (1).

7. The surface modification device for a cathode material according to claim 6, characterized in that: The top of the slider (21) and the side wall of the fixed frame (2) are both fixedly connected to the hinge frame (22), and the hinge frame (22) is rotatably connected to the connecting rod (23).

8. The surface modification device for a cathode material according to claim 1, characterized in that: The modified box (1) is provided with a hydraulic rod (18) on its side wall. The output end of the hydraulic rod (18) is fixedly connected to a side ear (19). The side wall of the side ear (19) is fixedly connected to the side wall of the fixed frame (2).

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