A lithium ion battery high-nickel ternary material pretreatment device
By combining stirring with hot air drying as a pretreatment method and using vibrating sieving technology, the problem of moisture absorption in high-nickel ternary materials for lithium-ion batteries during stirring was solved, improving material purity and battery performance, and ensuring battery safety and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEBI NXE ELECTRONIC CO LTD
- Filing Date
- 2025-05-10
- Publication Date
- 2026-06-02
AI Technical Summary
Existing lithium-ion battery high-nickel ternary material pretreatment devices are prone to absorbing moisture from the air during the stirring process, leading to agglomeration and the generation of harmful gases, which affects the safety and stability of the battery and reduces the purity and stability of the materials.
Pretreatment is carried out by a combination of stirring and hot air drying. Heated hot air is sent into the mixing box by a blower. Combined with the stirring of the spiral stirring blades, the moisture in the material is removed, and materials of different particle sizes are separated by a vibrating screen device.
It effectively removes moisture from the material, prevents agglomeration, improves the purity and stability of the material, enhances battery safety, and ensures the consistency of material particle size and battery performance.
Smart Images
Figure CN224308925U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of lithium-ion battery production equipment, specifically to a pretreatment device for high-nickel ternary materials in lithium-ion batteries. Background Technology
[0002] With the rapid development of the new energy vehicle industry, the performance requirements for lithium-ion batteries are increasing. High-nickel ternary materials, due to their high energy density, have become a research hotspot and development direction for lithium-ion battery cathode materials.
[0003] However, existing pretreatment devices for high-nickel ternary materials in lithium-ion batteries still have certain problems:
[0004] An existing lithium-ion battery high-nickel ternary material pretreatment device, such as the one with application number CN202121439770.8, includes a first metering chamber, a second metering chamber, a mixing cylinder, a heating device, and a high-speed mixer. The mixing cylinder contains a mixing chamber. The first metering chamber and the second metering chamber are both connected to the top of the mixing cylinder. The heating device is connected to the middle of the mixing cylinder. The high-speed mixer is located below the mixing cylinder, and the bottom of the mixing cylinder is connected to the high-speed mixer.
[0005] Existing lithium-ion battery high-nickel ternary material pretreatment devices, although they have a mixing and stirring mechanism for the materials during pretreatment, will cause the materials to absorb moisture from the air during stirring. This will not only cause the materials to agglomerate easily during stirring, but may also produce electrolytic reactions, generating harmful gases, affecting the safety and stability of the battery, and reducing the purity and stability of the materials.
[0006] Therefore, we propose a pretreatment device for high-nickel ternary materials in lithium-ion batteries to solve the problems mentioned above. Utility Model Content
[0007] The purpose of this invention is to provide a pretreatment device for high-nickel ternary materials for lithium-ion batteries, in order to solve the problem that, although the pretreatment device for high-nickel ternary materials for lithium-ion batteries mentioned in the background art has a mixing and stirring mechanism for the materials, the materials absorb moisture from the air during stirring, which not only makes the materials prone to agglomeration during the stirring process, but may also produce electrolytic reactions, generating harmful gases, affecting the safety and stability of the battery, and reducing the purity and stability of the materials.
[0008] To achieve the above objectives, this utility model provides the following technical solution: a pretreatment device for high-nickel ternary materials for lithium-ion batteries, comprising a fixing frame and a conveying box:
[0009] A conveyor box is welded to the upper end of the fixed frame. A mixing box is arranged above the conveyor box. A feed hopper is fixedly installed on the upper end face of the mixing box. A first motor is bolted to the upper end face of the mixing box. A mixing shaft is rotatably connected to the output end of the first motor and located inside the mixing box. Several mixing blades are fixedly installed on the outer surface of the mixing shaft. An air inlet pipe is connected to one side of the mixing box. An electric heating cylinder is connected to the outer flange of the air inlet pipe. An electric heating tube is connected to the top flange of the electric heating cylinder and extends into the electric heating cylinder. A connecting pipe is connected to the top flange of the electric heating tube. A fan is connected to the top flange of the connecting pipe. A controller is fixedly installed on the outer surface of the electric heating cylinder.
[0010] Using the above technical solution, high-nickel ternary materials enter the mixing chamber from the feed hopper. The first motor drives the stirring shaft and stirring blades to stir the materials. The fan sends air to the electric heating cylinder through the connecting pipe. The electric heating tube heats the air and then enters the mixing chamber through the air inlet pipe. This method can pre-treat high-nickel ternary materials by combining stirring and hot air drying, effectively removing moisture from the materials, preventing agglomeration, improving material purity, stability and battery performance, and enhancing safety.
[0011] Preferably, the stirring blades are designed in a spiral shape, and the stirring blades are arranged in three layers along the outer surface of the stirring shaft.
[0012] Using the above technical solution, the stirring blades are spiral-shaped and arranged in three layers along the stirring axis. The spiral shape propels the material to move axially and radially when rotating, and the three layers act simultaneously from different heights, causing the material to form a complex and comprehensive tumbling and mixing motion in the mixing tank, which significantly improves the mixing uniformity, allows all parts of the high-nickel ternary material to fully contact each other, and ensures the pretreatment effect.
[0013] Preferably, the conveying box and the mixing box are connected in a continuous structure. A second motor is bolted to the outer end of the conveying box, and a drive shaft is movably connected to the output end of the second motor. A spiral blade is fixedly installed on the outer surface of the drive shaft. A bearing is fixedly installed at the other end of the conveying box, and the other end of the drive shaft is rotatably connected to the middle of the bearing. A discharge port is connected to the bottom of the conveying box.
[0014] Using the above technical solution, the second motor drives the drive shaft to rotate, which in turn drives the spiral blades fixed on the outer surface to rotate. Since the conveying box is connected to the mixing box, the pre-treated high-nickel ternary material in the mixing box is pushed into the conveying box under the action of the spiral blades, realizing the efficient conveying of the pre-treated material in the mixing box. The material is pushed to the discharge port by the spiral blades, which facilitates the transfer of the treated material to the subsequent process, ensuring the continuity and efficiency of the entire pretreatment process.
[0015] Preferably, a base is provided on one side of the fixing frame, a screening box is provided above the base, and the discharge port is located directly above the screening box.
[0016] Using the above technical solution, the pre-treated high-nickel ternary material falling from the discharge port of the conveyor box falls vertically into the screening box located on the base below. The screening box is used to screen the pre-treated and conveyed material, separating out materials that do not meet the particle size requirements, ensuring that the particle size of the material entering the subsequent stages meets the standards, and improving product quality.
[0017] Preferably, six sets of springs are installed in a ring between the base and the screening box, a vibration motor is bolted to the bottom of the screening box, a screen is embedded inside the screening box, an upper discharge pipe is connected to the outer surface of the screening box, and a lower discharge pipe is connected to the outer surface of the screening box.
[0018] Using the above technical solution, the vibrating motor causes the screening box to vibrate at high frequency under the support of springs. The pre-treated high-nickel ternary material vibrates on the screen. Material that meets the screen aperture passes through the screen, while material that does not meet the aperture remains above the screen. With the help of vibrating screening, materials of different particle sizes are efficiently separated. The upper discharge pipe and the lower discharge pipe discharge materials of different specifications respectively, ensuring that the particle size of the high-nickel ternary material is accurate and controllable, improving product consistency and battery performance.
[0019] Compared with the prior art, the beneficial effects of this utility model are:
[0020] 1. While stirring, the blower sends air into the electric heating cylinder through the connecting pipe. The electric heating tube heats the air under the control of the controller. The hot air enters the mixing box through the air inlet pipe to dry the material being stirred. By combining stirring with hot air drying, the moisture in the material is effectively removed, agglomeration is prevented, the purity, stability and battery performance of the material are improved, safety is enhanced, the pretreatment effect of high-nickel ternary materials is effectively improved, and the material quality is guaranteed.
[0021] 2. The pre-treated material conveyed by the conveyor box can fall directly into the screening box. Six sets of springs are installed in a ring between the base and the screening box. In conjunction with the vibrating motor bolted to the bottom of the screening box, the vibrating motor causes the screening box to vibrate at high frequency after it is started. The screen embedded inside the screening box screens the material falling into it. The material that meets the screen mesh size passes through the screen and is discharged through the lower discharge pipe; the material that does not meet the size requirement stays above the screen and is discharged through the upper discharge pipe. By using the principle of vibrating screening, high-nickel ternary materials of different particle sizes can be separated efficiently and accurately, ensuring that the particle size of the material entering the subsequent stages meets the standards, greatly improving the consistency of the product and the performance of the final battery. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the external structure of this utility model from the front view;
[0023] Figure 2 This is a schematic diagram of the internal structure of the mixing tank of this utility model;
[0024] Figure 3 This is a schematic diagram of the hot air conveying structure of this utility model;
[0025] Figure 4 This is a schematic diagram of the spiral conveyor structure of the material of this utility model;
[0026] Figure 5 This is a schematic diagram of the vibrating screen structure of this utility model.
[0027] In the diagram: 1. Fixed frame; 2. Conveying box; 3. Mixing box; 4. Feed hopper; 5. First motor; 6. Mixing shaft; 7. Mixing blades; 8. Air inlet pipe; 9. Heating cylinder; 10. Heating tube; 11. Connecting pipe; 12. Fan; 13. Controller; 14. Second motor; 15. Drive shaft; 16. Spiral blades; 17. Bearing; 18. Discharge port; 19. Base; 20. Screening box; 21. Spring; 22. Vibrating motor; 23. Screen; 24. Upper discharge pipe; 25. Lower discharge pipe. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0029] Please see Figures 1-5 This utility model provides a technical solution: a pretreatment device for high-nickel ternary materials of lithium-ion batteries, including a fixed frame 1 and a conveying box 2. The conveying box 2 is welded to the upper end of the fixed frame 1. A mixing box 3 is arranged above the conveying box 2. A feed hopper 4 is fixedly installed on the upper end face of the mixing box 3. A first motor 5 is bolted to the upper end face of the mixing box 3. A stirring shaft 6 is rotatably connected to the output end of the first motor 5 and located inside the mixing box 3. Several stirring blades 7 are fixedly installed on the outer surface of the stirring shaft 6. An air inlet pipe 8 is connected to one side of the mixing box 3. An electric heating cylinder 9 is connected to the outer flange of the air inlet pipe 8. An electric heating tube 10 is connected to the top flange of the electric heating cylinder 9 and extends into the interior of the electric heating cylinder 9. A connecting pipe 11 is connected to the top flange of the electric heating tube 10. A fan 12 is connected to the top flange of the connecting pipe 11. A controller 13 is fixedly installed on the outer surface of the electric heating cylinder 9. The stirring blades 7 are spirally designed, and the stirring blades 7 are arranged in three layers along the outer surface of the stirring shaft 6.
[0030] The material enters the mixing chamber 3 through the feed hopper 4. The first motor 5 starts, driving the stirring shaft 6 to rotate. The outer surface of the stirring shaft 6 is designed in a spiral shape, and three layers of stirring blades 7 arranged along its upper and lower sides rotate accordingly. The spiral shape propels the material to move axially and radially during rotation. The three layers act simultaneously from different heights, allowing the material to tumble and mix thoroughly in the mixing chamber 3, achieving uniform mixing. At the same time, the blower 12 sends air through the connecting pipe 11 to the electric heating cylinder 9. The electric heating tube 10 heats the air under the control of the controller 13. The hot air enters the mixing chamber 3 through the air inlet pipe 8 to dry the material being mixed. By combining mixing with hot air drying, the moisture in the material is effectively removed, agglomeration is prevented, the purity, stability, and battery performance of the material are improved, safety is enhanced, the pretreatment effect of high-nickel ternary materials is effectively improved, and the material quality is guaranteed.
[0031] The conveying box 2 and the mixing box 3 are connected. The outer end of the conveying box 2 is bolted to a second motor 14. The output end of the second motor 14 is movably connected to a drive shaft 15. The outer surface of the drive shaft 15 is fixedly mounted with a spiral blade 16. The other end of the conveying box 2 is fixedly mounted with a bearing 17, and the other end of the drive shaft 15 is rotatably connected to the middle of the bearing 17. The bottom of the conveying box 2 is connected to a discharge port 18.
[0032] After the pretreatment is completed in the mixing tank 3, the second motor 14 starts because the conveying tank 2 and the mixing tank 3 are connected. Its output end drives the drive shaft 15 to rotate, and the spiral blades 16 fixedly installed on the outer surface of the drive shaft 15 rotate accordingly. The other end of the drive shaft 15 rotates in the middle of the bearing 17 to ensure the stability of the rotation. Under the action of the rotation of the spiral blades 16, the pretreated high-nickel ternary material in the mixing tank 3 is pushed into the conveying tank 2 and moves towards the discharge port 18, and is finally discharged from the discharge port 18. This achieves efficient conveying of the pretreated material in the mixing tank 3, ensures the continuity and efficiency of the entire pretreatment process, and facilitates the transfer of the treated material to the subsequent process.
[0033] A base 19 is provided on one side of the fixed frame 1, and a screening box 20 is provided above the base 19, with the discharge port 18 located directly above the screening box 20. Six sets of springs 21 are installed in a ring between the base 19 and the screening box 20. A vibration motor 22 is bolted to the bottom of the screening box 20. A screen 23 is embedded inside the screening box 20. An upper discharge pipe 24 and a lower discharge pipe 25 are connected to the outer surface of the screening box 20.
[0034] The base 19 on one side of the fixed frame 1 supports the screening box 20 above it, and the discharge port 18 at the bottom of the conveyor box 2 is located directly above the screening box 20. The pre-treated material conveyed by the conveyor box 2 can fall directly into the screening box 20. Six sets of springs 21 are installed in a ring between the base 19 and the screening box 20. In conjunction with the vibration motor 22 bolted to the bottom of the screening box 20, the vibration motor 22 causes the screening box 20 to vibrate at high frequency after it is started. The screen 23 embedded inside the screening box 20 screens the material falling into it. The material that meets the aperture of the screen 23 passes through the screen 23 and is discharged through the lower discharge pipe 25; the material that does not meet the aperture remains above the screen 23 and is discharged through the upper discharge pipe 24. By using the principle of vibration screening, high-nickel ternary materials of different particle sizes can be separated efficiently and accurately, ensuring that the particle size of the material entering the subsequent stage meets the standard, greatly improving the consistency of the product and the performance of the final battery.
[0035] Working principle: For this type of lithium-ion battery high-nickel ternary material pretreatment device, the material enters the mixing tank 3 from the feed hopper 4. The first motor 5 drives the mixing shaft 6 and the spiral-shaped mixing blades 7 in three layers to rotate, so as to achieve uniform mixing. At the same time, the blower 12 blows air through the electric heating tube 10 and then enters the mixing tank 3 through the air inlet pipe 8 to dry the material. The pretreated material in the mixing tank 3 is connected to the conveying box 2. The second motor 14 drives the drive shaft 15 and the spiral blades 16 to push it to the discharge port 18 for discharge. Finally, the material falling through the discharge port 18 of the conveying box 2 enters the screening box 20. Under the high-frequency vibration generated by the vibrating motor 22 and the spring 21, the screen 23 screens the material. The material that meets the aperture size is discharged through the lower discharge pipe 25, and the material that does not meet the aperture size is discharged through the upper discharge pipe 24.
[0036] This completes a series of tasks. The contents not described in detail in this specification are existing technologies known to those skilled in the art.
[0037] Although the present invention 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 invention should be included within the protection scope of the present invention.
Claims
1. A pretreatment device for high-nickel ternary materials for lithium-ion batteries, comprising a fixing frame (1) and a conveying box (2), characterized in that: The upper end of the fixed frame (1) is welded with a conveying box (2), and a mixing box (3) is set above the conveying box (2). A feeding hopper (4) is fixedly installed on the upper end face of the mixing box (3). A first motor (5) is bolted to the upper end face of the mixing box (3). A stirring shaft (6) is rotatably connected to the output end of the first motor (5) and located inside the mixing box (3). Several stirring blades (7) are fixedly installed on the outer surface of the stirring shaft (6). An air inlet pipe (8) is connected to one side of the mixing box (3). An electric heating cylinder (9) is connected to the outer flange of the air inlet pipe (8). An electric heating tube (10) is connected to the top flange of the electric heating cylinder (9), and the electric heating tube (10) extends into the interior of the electric heating cylinder (9). A connecting pipe (11) is connected to the top flange of the electric heating tube (10). A fan (12) is connected to the top flange of the connecting pipe (11). A controller (13) is fixedly installed on the outer surface of the electric heating cylinder (9).
2. The pretreatment device for high-nickel ternary materials for lithium-ion batteries according to claim 1, characterized in that: The stirring blades (7) are designed in a spiral shape, and the stirring blades (7) are arranged in three layers along the outer surface of the stirring shaft (6).
3. The pretreatment device for high-nickel ternary materials in lithium-ion batteries according to claim 1, characterized in that: The conveying box (2) and the mixing box (3) are connected in a connected structure. The outer end of the conveying box (2) is bolted to a second motor (14). The output end of the second motor (14) is movably connected to a drive shaft (15). The outer surface of the drive shaft (15) is fixedly mounted with a spiral blade (16). The other end of the conveying box (2) is fixedly mounted with a bearing (17), and the other end of the drive shaft (15) is rotatably connected to the middle of the bearing (17). The bottom of the conveying box (2) is connected to a discharge port (18).
4. The pretreatment device for high-nickel ternary materials for lithium-ion batteries according to claim 1, characterized in that: A base (19) is provided on one side of the fixed frame (1), and a screening box (20) is provided above the base (19), with the discharge port (18) located directly above the screening box (20).
5. The lithium-ion battery high-nickel ternary material pretreatment device according to claim 4, characterized in that: Six sets of springs (21) are installed in a ring between the base (19) and the screening box (20). A vibration motor (22) is bolted to the bottom of the screening box (20). A screen (23) is embedded inside the screening box (20). An upper discharge pipe (24) is connected to the outer surface of the screening box (20). A lower discharge pipe (25) is connected to the outer surface of the screening box (20).