Silicon-carbon negative electrode material preparation device

Abstract

The utility model discloses a silicon carbon negative electrode material preparation device which comprises a U-shaped frame, a ball mill body is rotatably installed on the inner side of the U-shaped frame, a feeding machine body is arranged on the outer wall of one side of the U-shaped frame, a discharging machine body is arranged on the outer wall of the side, away from the feeding machine body, of the U-shaped frame, and a rack is arranged on the outer side of the end, away from the ball mill body, of the feeding machine body. A material storage box is arranged at the top of the rack, a material falling opening is formed in the bottom end of the material storage box, the bottom end of the material falling opening communicates with the top end of the feeding machine body, a first spiral roller is rotationally installed in the feeding machine body, one end of the first spiral roller is connected with one end of the ball mill body, and a second spiral roller is rotationally installed in the discharging machine body; a discharging port is formed in one side of the bottom end of the discharging machine body. According to the preparation device, the purpose of automatic feeding and discharging is achieved, so that the labor intensity of personnel is reduced, the convenience of the preparation device in use is improved, the silicon-carbon negative electrode material can be easily subjected to ball-milling preparation, and the phenomenon that the blanking port is blocked is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium-ion batteries, in particular to a preparation device for a silicon-carbon negative electrode material. Background Technique

[0002] With the rapid development of fields such as electric vehicles and portable electronic devices, the requirements for the energy density and cycle stability of lithium-ion batteries are increasing day by day. Silicon-based negative electrode materials have become a research hotspot due to their high theoretical specific capacity. However, silicon materials have serious volume expansion problems during charge and discharge processes, resulting in the destruction of the electrode structure and a decline in cycle performance. By compounding silicon with carbon materials and utilizing the good electrical conductivity and stability of carbon materials, the volume expansion of silicon can be effectively alleviated, and the comprehensive performance of silicon-based negative electrode materials can be improved. During the processing of carbon-silicon composite negative electrode materials, the negative electrode materials generally need to be ball-milled, so a corresponding preparation device for silicon-carbon negative electrode materials is required.

[0003] A preparation device for a carbon-silicon composite negative electrode material with a reference publication number of CN215783797U includes a base. A motor group is fixedly connected to the top of the base. A ball mill is movably connected to the top of the base. A gear ring is fixedly connected to the outer wall of the ball mill. A limiting wheel is fixedly connected to the outer wall of the ball mill. A support is fixedly connected to the top of the base. A rotating shaft is movably connected to one side of the support. A support wheel is fixedly connected to the outer wall of the rotating shaft. A discharge barrel is fixedly connected to the discharge port of the ball mill. A storage box is fixedly connected to one side of the base. Compared with general preparation devices for carbon-silicon composite negative electrode materials, the obtained finished silicon-carbon raw materials are finer during use, and there will be no agglomeration phenomenon, which is more convenient for subsequent use and avoids the problem of people performing secondary processing, greatly improving the processing efficiency of silicon-carbon raw materials. According to the above, although this device can be well applied, it is necessary for personnel to use external instruments to perform the feeding operation on the silicon-carbon negative electrode material. Since it is not convenient to automatically feed the material, the labor intensity of personnel is increased, and the labor cost is relatively high, which often troubles users. Content of the Utility Model

[0004] The purpose of the utility model is to provide a preparation device for a silicon-carbon negative electrode material, so as to solve the problem proposed in the above background technique that although the device can be well applied, it is necessary for personnel to use external instruments to perform the feeding operation on the silicon-carbon negative electrode material. Since it is not convenient to automatically feed the material, the labor intensity of personnel is increased, and the labor cost is relatively high.

[0005] To achieve the above object, the utility model provides the following technical solution: A preparation device for silicon-carbon anode materials, including a U-shaped frame, a ball mill body is rotatably installed inside the U-shaped frame, a feeding machine body is provided on the outer wall of one side of the U-shaped frame, a discharging machine body is provided on the outer wall of the side of the U-shaped frame away from the feeding machine body, a frame is provided on the outer side of the end of the feeding machine body away from the ball mill body, a storage bin is provided on the top of the frame, a blanking port is provided at the bottom end of the storage bin, and the bottom end of the blanking port is communicated with the top end of the feeding machine body. A first spiral roller is rotatably installed inside the feeding machine body, one end of the first spiral roller is connected to one end of the ball mill body, a second spiral roller is rotatably installed inside the discharging machine body, and one end of the second spiral roller is connected to the other end of the ball mill body. An outlet is provided on one side of the bottom end of the discharging machine body.

[0006] Preferably, a second gear is fixed on the outer wall of the ball mill body near the discharging machine body end, and a second rotation driving member is installed on the outer wall of the U-shaped frame on one side of the second gear through a bracket. Through the setting of the second rotation driving member, the first gear can be driven to rotate.

[0007] Preferably, a first gear is provided at one end of the second rotation driving member, and the first gear meshes with the second gear. Through the mutual meshing of the first gear and the second gear, when the first gear rotates, the ball mill body can be driven to rotate through the second gear.

[0008] Preferably, a crushing machine body is provided above the storage bin, the outer walls on both sides of the crushing machine body are connected to the outer wall of the storage bin through brackets, and a bearing seat is provided on the outer wall of one side of the crushing machine body. Through the setting of the crushing machine body, the first crushing roller and the second crushing roller can be placed and processed.

[0009] Preferably, a first auxiliary cutter roller is provided on the inner wall of one side of the crushing machine body, a second auxiliary cutter roller is provided on the inner wall of the other side of the crushing machine body, a first crushing roller and a second crushing roller are respectively rotatably installed in the crushing machine body between the second auxiliary cutter roller and the first auxiliary cutter roller. One end of the first crushing roller extends to the outside of the crushing machine body and is provided with a driven gear, one end of the second crushing roller extends to the outside of the crushing machine body and is provided with a driving gear, and the driving gear meshes with the driven gear. Through the setting of the first crushing roller and the second crushing roller, the silicon-carbon anode material can be crushed into small particles.

[0010] Preferably, a first rotation driving member is installed on the top end of the bearing seat through a bracket, and one end of the first rotation driving member is connected to one end of the second crushing roller. Through the setting of the first rotation driving member, the second crushing roller can be driven to rotate.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: The preparation device for the silicon-carbon negative electrode material not only achieves the purpose of automatic loading and unloading, reduces the labor intensity of personnel, and improves the convenience during the use of the preparation device, but also is easy to carry out ball milling preparation on the silicon-carbon negative electrode material, and effectively reduces the phenomenon of blockage at the material dropping port;

[0012] (1) By injecting the silicon-carbon negative electrode material into the storage bin, due to gravity, the silicon-carbon negative electrode material falls into the feeding body through the material dropping port. When the second rotation driving member drives the first gear to rotate, the first gear drives the ball mill body to rotate through the second gear, and the ball mill body drives the first spiral roller to rotate synchronously, so as to convey the silicon-carbon negative electrode material on the left side inside the feeding body to the ball mill body in a spiral manner, achieving the purpose of automatic feeding, thereby reducing the labor intensity of personnel and improving the convenience during the use of the preparation device;

[0013] (2) When the ball mill body rotates, it drives the second spiral roller to rotate. When the ball-milled material inside the ball mill body gradually accumulates and flows into the discharging body, the second spiral roller conveys the material to the right side inside the discharging body in a spiral manner, so that the ball-milled material is discharged through the discharge port, thereby achieving the purpose of automatically discharging the ball-milled silicon-carbon negative electrode material;

[0014] (3) By adding the silicon-carbon negative electrode material to the crushing body, since the first rotation driving member drives the second crushing roller to rotate, the second crushing roller drives the first crushing roller to rotate in opposite directions through the driving gear and the driven gear in sequence, so that the second crushing roller cooperates with the first crushing roller to crush the silicon-carbon negative electrode material, and the second crushing roller and the first crushing roller cooperate with the first auxiliary cutting roller and the second auxiliary cutting roller to crush the silicon-carbon negative electrode material falling on both sides inside the crushing body, so that the silicon-carbon negative electrode material can be crushed into small particles and fall into the storage bin, thereby being easy to carry out subsequent ball milling preparation on the silicon-carbon negative electrode material and effectively reducing the phenomenon of blockage at the material dropping port. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a front view structural schematic diagram of the present utility model;

[0016] Figure 2 is a top view sectional structural schematic diagram of the feeding body and the discharging body of the present utility model;

[0017] Figure 3 is the present utility model Figure 2 is an enlarged structural schematic diagram at position A in;

[0018] Figure 4 is a top view structural schematic diagram of the crushing body of the present utility model.

[0019] In the figure: 1. U-shaped frame; 2. Ball mill body; 3. Feeding body; 4. Discharging body; 5. Frame; 6. Storage bin; 7. Feeding port; 8. Crushing body; 9. Bearing seat; 10. First rotation driving member; 11. Driving gear; 12. Second rotation driving member; 13. First gear; 14. Second gear; 15. Discharge port; 16. First spiral roller; 17. Second spiral roller; 18. Driven gear; 19. First auxiliary cutter roller; 20. First crushing roller; 21. Second crushing roller; 22. Second auxiliary cutter roller. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1-4 , an embodiment provided by the present invention: A device for preparing silicon-carbon anode material, including a U-shaped frame 1, a ball mill body 2 is rotatably installed inside the U-shaped frame 1, and a second gear 14 is fixed on the outer wall of the ball mill body 2 near one end of the discharging body 4. A second rotation driving member 12 is installed on the outer wall of the U-shaped frame 1 on one side of the second gear 14 through a bracket;

[0022] During use, through the setting of the second rotation driving member 12, the first gear 13 is driven to rotate;

[0023] One end of the second rotation driving member 12 is provided with a first gear 13, and the first gear 13 meshes with the second gear 14;

[0024] During use, through the meshing of the first gear 13 and the second gear 14, when the first gear 13 rotates, the ball mill body 2 is driven to rotate through the second gear 14;

[0025] A feeding body 3 is provided on the outer wall of one side of the U-shaped frame 1, a discharging body 4 is provided on the outer wall of the U-shaped frame 1 away from the feeding body 3, a frame 5 is provided outside one end of the feeding body 3 away from the ball mill body 2, a storage bin 6 is provided on the top of the frame 5, a crushing body 8 is provided above the storage bin 6, the outer walls on both sides of the crushing body 8 are connected to the outer wall of the storage bin 6 through brackets, and a bearing seat 9 is provided on the outer wall of one side of the crushing body 8;

[0026] During use, through the setting of the crushing body 8, the first crushing roller 20 and the second crushing roller 21 are placed and processed;

[0027] On the inner wall of one side of the crushing body 8, a first auxiliary cutter roller 19 is provided. On the inner wall of the other side of the crushing body 8, a second auxiliary cutter roller 22 is provided. Inside the crushing body 8 between the second auxiliary cutter roller 22 and the first auxiliary cutter roller 19, a first crushing roller 20 and a second crushing roller 21 are respectively rotatably installed. One end of the first crushing roller 20 extends to the outside of the crushing body 8 and is provided with a driven gear 18. One end of the second crushing roller 21 extends to the outside of the crushing body 8 and is provided with a driving gear 11. The driving gear 11 and the driven gear 18 are meshed with each other;

[0028] During use, through the arrangement of the first crushing roller 20 and the second crushing roller 21, the silicon-carbon anode material is crushed into small particles;

[0029] At the top of the bearing seat 9, a first rotary drive member 10 is installed through a bracket. One end of the first rotary drive member 10 is connected to one end of the second crushing roller 21;

[0030] During use, through the arrangement of the first rotary drive member 10, the second crushing roller 21 is driven to rotate;

[0031] At the bottom end of the storage bin 6, a material dropping port 7 is provided. The bottom end of the material dropping port 7 is communicated with the top end of the feeding body 3. Inside the feeding body 3, a first spiral roller 16 is rotatably installed. One end of the first spiral roller 16 is connected to one end of the ball mill body 2. Inside the discharging body 4, a second spiral roller 17 is rotatably installed. One end of the second spiral roller 17 is connected to the other end of the ball mill body 2. On one side of the bottom end of the discharging body 4, a discharging port 15 is provided.

[0032] When the embodiment of the present application is in use, first, the silicon-carbon anode material is added to the crushing body 8. Since the first rotation driving member 10 drives the second crushing roller 21 to rotate, the second crushing roller 21 drives the first crushing roller 20 to rotate towards each other in sequence through the driving gear 11 and the driven gear 18, so that the second crushing roller 21 cooperates with the first crushing roller 20 to crush the silicon-carbon anode material, and the second crushing roller 21 and the first crushing roller 20 cooperate with the first auxiliary cutting roller 19 and the second auxiliary cutting roller 22 to crush the silicon-carbon anode material falling on both sides inside the crushing body 8, and part of the massive silicon-carbon anode material can be crushed into small particles and fall into the storage bin 6 for storage, which is easy for subsequent ball milling preparation of the silicon-carbon anode material. Then, due to the gravity factor, the silicon-carbon anode material inside the storage bin 6 falls into the feeding body 3 through the feeding port 7. When the second rotation driving member 12 drives the first gear 13 to rotate, the first gear 13 drives the ball mill body 2 to rotate through the second gear 14, and the ball mill body 2 drives the first spiral roller 16 to rotate synchronously, so that the silicon-carbon anode material on the left side inside the feeding body 3 can be spirally conveyed into the ball mill body 2 to achieve the purpose of automatic feeding, and the ball mill body 2 performs ball milling preparation on the silicon-carbon anode material. The technology of the ball mill body 2 for the silicon-carbon anode material belongs to the prior art, so it will not be described in detail here. Finally, when the ball mill body 2 rotates, it drives the second spiral roller 17 to rotate. When the ball-milled material inside the ball mill body 2 gradually accumulates and flows into the discharging body 4, the second spiral roller 17 will spirally convey the material to the right side inside the discharging body 4, and the ball-milled material is discharged through the discharging port 15. Just place the receiving box below the discharging port 15 to collect the ball-milled material, so as to achieve the purpose of automatically discharging and collecting the material, and thus complete the use of the preparation device.

Claims

1. A preparation device for a silicon-carbon negative electrode material, characterized in that: It includes a U-shaped frame (1). A ball mill body (2) is rotatably installed inside the U-shaped frame (1). A feeding body (3) is provided on the outer wall of one side of the U-shaped frame (1). A discharging body (4) is provided on the outer wall of the side of the U-shaped frame (1) away from the feeding body (3). A frame (5) is provided on the outer side of the end of the feeding body (3) away from the ball mill body (2). A storage bin (6) is provided on the top of the frame (5). A blanking port (7) is provided at the bottom of the storage bin (6). The bottom end of the blanking port (7) is communicated with the top end of the feeding body (3). A first spiral roller (16) is rotatably installed inside the feeding body (3). One end of the first spiral roller (16) is connected to one end of the ball mill body (2). A second spiral roller (17) is rotatably installed inside the discharging body (4). One end of the second spiral roller (17) is connected to the other end of the ball mill body (2). An outlet (15) is provided on one side of the bottom end of the discharging body (4).

2. The preparation device for a silicon-carbon anode material according to claim 1, characterized in that: A second gear (14) is fixed on the outer wall of the end of the ball mill body (2) close to the discharging body (4). A second rotation driving member (12) is installed on the outer wall of the U-shaped frame (1) on one side of the second gear (14) through a bracket.

3. The preparation device for a silicon-carbon anode material according to claim 2, characterized in that: A first gear (13) is provided at one end of the second rotation driving member (12). The first gear (13) meshes with the second gear (14).

4. A preparation device for a silicon-carbon anode material according to claim 1, characterized in that: A crushing body (8) is provided above the storage bin (6). The outer walls on both sides of the crushing body (8) are connected to the outer wall of the storage bin (6) through brackets. A bearing seat (9) is provided on the outer wall of one side of the crushing body (8).

5. The preparation device for a silicon-carbon anode material according to claim 4, characterized in that: A first auxiliary cutter roller (19) is provided on the inner wall of one side of the crushing body (8). A second auxiliary cutter roller (22) is provided on the inner wall of the other side of the crushing body (8). A first crushing roller (20) and a second crushing roller (21) are respectively rotatably installed inside the crushing body (8) between the second auxiliary cutter roller (22) and the first auxiliary cutter roller (19). One end of the first crushing roller (20) extends to the outside of the crushing body (8) and is provided with a driven gear (18). One end of the second crushing roller (21) extends to the outside of the crushing body (8) and is provided with a driving gear (11). The driving gear (11) meshes with the driven gear (18).

6. The preparation device for a silicon-carbon anode material according to claim 5, characterized in that: A first rotation driving member (10) is installed on the top end of the bearing seat (9) through a bracket. One end of the first rotation driving member (10) is connected to one end of the second crushing roller (21).

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