Grinding device for lithium battery negative electrode material production

Abstract

The utility model relates to the technical field of lithium battery processing, and discloses a grinding device for lithium battery cathode material production, which comprises a grinding cylinder, a grinding cavity is formed in the grinding cylinder, filtering holes which are densely distributed and communicate with the grinding cavity are formed in the bottom of the grinding cylinder, a discharging pipe communicating with the filtering holes is installed at the bottom of the grinding cylinder, and a grinding piece located in the grinding cavity and a driving piece used for driving the grinding piece to rotate are installed on the grinding cylinder; a discharging opening is formed in the side face of the discharging pipe, and a reciprocating dispersing part which shakes materials in a reciprocating mode and discharges the materials from the discharging opening is installed in the discharging pipe. The utility model provides a grinding device for producing a negative electrode material of a lithium battery, and solves the problems that the agglomeration phenomenon among particles of the negative electrode material is possibly aggravated and the dispersity of the material is influenced in the grinding process of the negative electrode material.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery processing, in particular to a grinding device for producing negative electrode materials of lithium batteries. Background Art

[0002] Lithium battery negative electrode material is one of the key components of lithium batteries, which determines the performance, life and safety of the battery. The main function of the negative electrode material is to provide a place for lithium ion embedding and de-embedding during the battery charging and discharging process, and to store and release electrical energy. In the production process of lithium battery negative electrode materials, grinding the raw materials is an important step. The purpose of grinding is to increase the specific surface area of ​​the raw material particles and improve the diffusion efficiency of lithium ions, thereby improving the battery's charging and discharging speed and cycle performance. Grinding can also improve the particle size distribution of the raw materials, making it more uniform, which helps to improve the performance and stability of the battery.

[0003] During the grinding process of the negative electrode material, the agglomeration phenomenon between the negative electrode material particles may be intensified, affecting the dispersion of the material, thereby affecting the filling performance and electrochemical performance of the electrode.

[0004] In order to solve the above problems, the present application proposes a grinding device for producing negative electrode materials for lithium batteries. Utility Model Content

[0005] Based on the technical problems existing in the background technology, the utility model proposes a grinding device for producing negative electrode materials for lithium batteries.

[0006] The utility model provides a grinding device for producing negative electrode materials for lithium batteries, comprising a grinding cylinder;

[0007] The grinding cylinder has a grinding chamber formed therein, the bottom of the grinding cylinder has densely arranged filter holes connected to the grinding chamber, the bottom of the grinding cylinder is provided with a discharge pipe connected to the filter holes, and the grinding cylinder has a grinding piece located in the grinding chamber and a driving piece for driving the grinding piece to rotate.

[0008] A discharge port is provided on the side of the discharge pipe, and a reciprocating dispersing member is installed in the discharge pipe for reciprocatingly shaking the material and discharging the material from the discharge port.

[0009] Preferably, the reciprocating dispersion member includes a first servo motor, which is installed on the outer periphery of the discharge pipe, and the output end of the first servo motor is connected to a turntable located in the discharge pipe, an eccentrically arranged connecting rod is rotatably connected to the turntable, a U-shaped block is rotatably sleeved on the top end of the connecting rod, a piston cone head slidably connected to the inner wall of the discharge pipe is installed on the top of the U-shaped block, and an inclined surface is formed on the outer periphery of the top of the piston cone head.

[0010] Preferably, the grinding member comprises a grinding disc, which is disposed in the grinding chamber and driven to rotate by a driving member, and a plurality of circumferentially arranged grinding heads are mounted on the grinding disc.

[0011] Preferably, the driving member comprises a second servo motor, the second servo motor is mounted on the back side of the grinding cylinder, and the output end of the second servo motor is connected to the axis of the grinding disc.

[0012] Preferably, a material guiding hose communicating with a material discharge port is connected to the side of the grinding cylinder.

[0013] Preferably, a feed hopper connected to the grinding chamber is connected to the top of the grinding cylinder.

[0014] The above technical solution of the utility model has the following beneficial technical effects:

[0015] Through the reciprocating dispersing member, the negative electrode material to be ground can be poured into the grinding cylinder, and then the grinding member can be driven to rotate by the driving member to grind the negative electrode material. The ground powder can be filtered through the filter hole and enter the discharge pipe. The material can be reciprocated by the reciprocating dispersing member to disperse the material and be discharged from the discharge port during the shaking process. This structure can effectively disperse the agglomerated particles by reciprocatingly shaking the ground negative electrode material through the reciprocating dispersing member, thereby improving the dispersion and uniformity of the negative electrode material, thereby improving the filling performance of the electrode. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a schematic structural diagram of a grinding device for producing negative electrode materials for lithium batteries.

[0017] Figure 2 This is a rear view of a grinding device for producing negative electrode materials for lithium batteries proposed by the utility model.

[0018] Figure 3 The utility model discloses a schematic diagram of the internal structure of a discharge pipe in a grinding device for producing negative electrode materials for lithium batteries.

[0019] Figure numerals: 1. Grinding cylinder; 2. Discharge pipe; 3. Filter hole; 4. Grinding piece; 41. Grinding disc; 42. Grinding head; 5. Reciprocating dispersion piece; 51. First servo motor; 52. Turntable; 53. Connecting rod; 54. U-shaped block; 55. Piston cone head; 6. Discharge port; 7. Second servo motor; 8. Material guide hose; 9. Feed hopper. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0021] like Figure 1-3 As shown, the present invention provides a grinding device for producing negative electrode materials for lithium batteries, comprising a grinding cylinder 1;

[0022] In this embodiment, a grinding chamber is provided in the grinding cylinder 1, and densely arranged filter holes 3 are provided at the bottom of the grinding cylinder 1 and communicated with the grinding chamber. A discharge pipe 2 communicating with the filter holes 3 is installed at the bottom of the grinding cylinder 1, and a grinding member 4 located in the grinding chamber and a driving member for driving the grinding member 4 to rotate are installed on the grinding cylinder 1. The grinding member 4 includes a grinding disc 41, which is arranged in the grinding chamber and driven to rotate by the driving member, and a plurality of circumferentially arranged grinding heads 42 are installed on the grinding disc 41. The driving member includes a second servo motor 7, which is installed on the back of the grinding cylinder 1, and the output end of the second servo motor 7 is connected to the axis of the grinding disc 41.

[0023] In this embodiment, a discharge port 6 is provided on the side of the discharge pipe 2, and a reciprocating dispersing member 5 is installed in the discharge pipe 2 to reciprocate and shake the material and discharge the material from the discharge port 6. The reciprocating dispersing member 5 includes a first servo motor 51, which is installed on the outer periphery of the discharge pipe 2, and the output end of the first servo motor 51 is connected to a turntable 52 located in the discharge pipe 2, and an eccentrically arranged connecting rod 53 is rotatably connected to the turntable 52, and a U-shaped block 54 is rotatably sleeved on the top of the connecting rod 53, and a piston cone head 55 slidably connected to the inner wall of the discharge pipe 2 is installed on the top of the U-shaped block 54, and an inclined surface is formed on the outer periphery of the top of the piston cone head 55.

[0024] In a specific embodiment, a feed hopper 9 connected to the grinding chamber is connected to the top of the grinding cylinder 1. The feed hopper 9 is provided to facilitate pouring the negative electrode material into the grinding cylinder 1.

[0025] It should be noted that: in order to prevent the ground negative electrode material from agglomerating together, the negative electrode material to be ground can be poured into the grinding cylinder 1 through the feed hopper 9, and then the grinding disc 41 can be driven by the second servo motor 7 to drive the grinding head 42 to rotate to grind the negative electrode material. The ground powder can be filtered through the filter hole 3 and enter the discharge pipe 2. At this time, the turntable 52 is driven by the first servo motor 51 to drive the connecting rod 53 to move circumferentially, and the top of the connecting rod 53 reciprocates in the U-shaped block 54, and the piston cone head 55 is reciprocated. The piston cone head 55 can move up and down in the discharge pipe 2, and the piston cone head 55 is shaken and dispersed. When the piston cone head 55 moves upward through the discharge port 6, the material can be discharged from the discharge port 6 along the inclined surface of the piston cone head 55. This structure reciprocates and shakes the ground negative electrode material through the reciprocating dispersion member 5, which can effectively disperse the agglomerated particles, improve the dispersion and uniformity of the negative electrode material, and thus improve the filling performance of the electrode.

[0026] In a specific embodiment, a material guiding hose 8 communicating with the material discharge port 6 is connected to the side of the grinding cylinder 1 .

[0027] It should be noted that the material guide hose 8 is provided to facilitate guiding the material discharged from the discharge port 6 to the corresponding place.

[0028] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation on the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the claims attached to the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the attached claims, or the equivalent forms of such scope and boundaries.

Claims

1. A grinding device for producing negative electrode materials for lithium batteries, comprising a grinding cylinder (1), Features: The grinding cylinder (1) has a grinding chamber formed therein, the bottom of the grinding cylinder (1) has densely arranged filter holes (3) in communication with the grinding chamber, the bottom of the grinding cylinder (1) is provided with a discharge pipe (2) in communication with the filter holes (3), and the grinding cylinder (1) has a grinding element (4) in the grinding chamber and a driving element for driving the grinding element (4) to rotate. A discharge port (6) is provided on the side of the discharge pipe (2), and a reciprocating dispersing member (5) is installed in the discharge pipe (2) for reciprocatingly shaking the material and discharging the material from the discharge port (6).

2. A grinding device for producing negative electrode materials for lithium batteries according to claim 1, It is characterized in that The reciprocating dispersing member (5) comprises a first servo motor (51), which is mounted on the outer periphery of the discharge pipe (2); the output end of the first servo motor (51) is connected to a turntable (52) located in the discharge pipe (2); an eccentrically arranged connecting rod (53) is rotatably connected to the turntable (52); a U-shaped block (54) is rotatably sleeved on the top end of the connecting rod (53); a piston cone head (55) slidably connected to the inner wall of the discharge pipe (2) is mounted on the top of the U-shaped block (54); an inclined surface is formed on the outer periphery of the top of the piston cone head (55).

3. A grinding device for producing negative electrode materials for lithium batteries according to claim 2, It is characterized in that The grinding member (4) comprises a grinding disc (41), which is arranged in a grinding chamber and driven to rotate by a driving member, and a plurality of grinding heads (42) arranged circumferentially are mounted on the grinding disc (41).

4. A grinding device for producing negative electrode materials for lithium batteries according to claim 3, It is characterized in that The driving member comprises a second servo motor (7), the second servo motor (7) is mounted on the back of the grinding cylinder (1), and the output end of the second servo motor (7) is connected to the axis of the grinding disc (41).

5. A grinding device for producing negative electrode materials for lithium batteries according to claim 1, It is characterized in that A material guiding hose (8) which is in communication with a material discharge port (6) is connected to the side of the grinding cylinder (1).

6. A grinding device for producing negative electrode materials for lithium batteries according to claim 1, It is characterized in that The top of the grinding cylinder (1) is connected to a feed hopper (9) which is in communication with the grinding chamber.

Images