Lithium battery graphite negative electrode material shaping device

Abstract

The utility model discloses a lithium battery graphite cathode material shaping device which comprises a supporting frame, a tank body is arranged above the supporting frame, a first motor is arranged in the middle of the upper portion of the tank body, a rotating shaft of the first motor penetrates through the tank body and is fixedly connected with a shaft rod, and a first grinding roller shaft is arranged at the upper end, located in the tank body, of the shaft rod. A first grinding barrel matched with the first grinding roller shaft is arranged below the tank body, the lower portion of the shaft rod is fixedly connected with a second grinding roller shaft, a second grinding barrel matched with the second grinding roller shaft is arranged below the second grinding roller shaft, and four guide rods arranged in a matrix mode are connected to the outer side of the second grinding barrel in an inserted mode; a first filter screen is arranged above the guide rod, and a second filter screen is arranged below the guide rod. The graphite reshaping device is simple in structure, convenient to operate and good in grinding effect, ground graphite can be filtered for multiple times, and the graphite reshaping quality is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of preparation of graphite negative electrode materials for lithium batteries, in particular to a shaping device for graphite negative electrode materials for lithium batteries. Background Art

[0002] Graphite powder is widely used in various fields of industrial production. Graphite powder has the advantages of good electrical conductivity, large lithium ion diffusion coefficient, small volume before and after embedding, high embedding capacity and low embedding potential, making it an important negative electrode material for lithium batteries. General graphite powder is formed after mechanical crushing. The surface of such graphite powder particles is more angular, which is not conducive to the improvement of graphite cycle stability and specific capacity. Therefore, for graphite powder used in lithium batteries, it is also necessary to perform shaping treatment to reduce the edges and corners on the surface of graphite particles so that they can form spherical or quasi-spherical particles. At present, the above purpose is mainly achieved by grinding graphite powder. Due to the lack of screening function, the ground graphite powder is still doped with a part of graphite particles with larger particle size that cannot be effectively shaped, which affects the quality of the shaped graphite powder. For this reason, we propose a shaping device for lithium battery graphite negative electrode materials. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a lithium battery graphite negative electrode material shaping device. The utility model solves the problem that the above purpose is achieved mainly by grinding graphite powder, but due to the lack of screening function, the ground graphite powder is still mixed with a part of graphite particles with larger particle size that cannot be effectively shaped, which affects the quality of the shaped graphite powder.

[0004] A lithium battery graphite negative electrode material shaping device in the utility model comprises a support frame, the support frame, a tank body is arranged above the support frame, a first motor is arranged in the middle part above the tank body, a rotating shaft of the first motor passes through the tank body and is fixedly connected to a shaft rod, the shaft rod is located in the tank body and is provided with a first grinding roller at the upper end, a first grinding cylinder matching the first grinding roller is arranged below the tank body, the shaft rod is fixedly connected to the second grinding roller below, a second grinding cylinder matching the second grinding roller is arranged below the second grinding roller, four guide rods arranged in a matrix are inserted on the outer side of the second grinding cylinder, a first filter is arranged above the guide rod, and a second filter is arranged below the guide rod.

[0005] In the above solution, a feeding assembly is provided on one side above the tank body.

[0006] In the above scheme, the feed assembly includes a feed pipe, which is connected to the tank body, a cover body is provided above the feed pipe, two symmetrical fixed plates are provided on one side of the upper end of the feed pipe, the two fixed plates are movably connected to the pressure plate through a pin shaft, the middle part of the pressure plate is fixedly connected to the cover body, the side of the pressure plate away from the fixed plate is fixedly connected to the clamping plate, a U-shaped seat is provided on the upper end of the feed pipe away from the fixed plate, the middle part of the U-shaped seat is movably connected to the threaded rod through a pin shaft, and the threaded rod is provided with a clamping ring above the clamping plate.

[0007] In the above scheme, a shell is provided on one side below the first grinding cylinder, a second motor is provided in the shell, a turntable is provided on the rotating shaft of the second motor, the outer side of the turntable is movably connected to the first connecting rod, a through groove is provided below the shell, the first connecting rod passes through the through groove and is movably connected to the second connecting rod, and the second connecting rod is movably connected to the first filter screen below.

[0008] In the above scheme, a discharge pipe is provided in the middle of the lower part of the tank body, and a sealing cover is provided below the discharge pipe.

[0009] In the above solution, anti-slip grooves are provided on the outer side of the sealing cover.

[0010] In the above solution, the tank body is provided with manholes on both the first filter screen and the second filter screen.

[0011] The advantages and beneficial effects of the utility model are as follows: the utility model provides a shaping device for graphite negative electrode materials of lithium batteries, through the mutual cooperation between the first grinding roller and the first grinding cylinder and the second grinding roller and the second grinding cylinder, the shaping device can grind the graphite multiple times, the first filter screen and the second filter screen can filter the graphite ground by the first grinding roller and the second grinding roller respectively, and through the movement of the first filter screen and the second filter screen, the filtering effect of the first filter screen and the second filter screen on the graphite is effectively accelerated. The shaping device has a simple structure, is easy to operate, has a good grinding effect, and the ground graphite can be filtered multiple times, which effectively improves the shaping quality of the graphite. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0013] Figure 1 It is a cross-sectional view of the utility model;

[0014] Figure 2This is a schematic diagram of the structure of part A of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the feed assembly of the utility model.

[0016] In the figure: 1, support frame 2, tank body 3, first motor 4, shaft 5, first grinding roller 6, first grinding cylinder 7, second grinding roller 8, second grinding cylinder 9, first filter 10, second filter 11, guide rod 12, feed assembly 121, feed pipe 122, cover body 123, fixing plate 124, pressure plate 125, clamping plate 126, U-shaped seat 127, threaded rod 128, clamping ring 13, shell 14, second motor 15, turntable 16, first connecting rod 17, through groove 18, second connecting rod 19, discharge pipe 20, sealing cover. DETAILED DESCRIPTION

[0017] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0018] like Figure 1-3 As shown, the utility model is a lithium battery graphite negative electrode material shaping device, including a support frame 1, the support frame 1, a tank body 2 is arranged above the support frame 1, a first motor 3 is arranged in the middle of the tank body 2, the rotating shaft of the first motor 3 passes through the tank body 2 and is fixedly connected with a shaft rod 4, the shaft rod 4 is located in the tank body 2 and is provided with a first grinding roller shaft 5 at the upper end, a first grinding cylinder 6 matching the first grinding roller shaft 5 is arranged below the tank body 2, the shaft rod 4 is fixedly connected with a second grinding roller shaft 7 below, a second grinding cylinder 8 matching the second grinding roller shaft 7 is arranged below the second grinding roller shaft 7, and the outer side of the second grinding cylinder 8 is inserted It is connected to four guide rods 11 arranged in a matrix, a first filter screen 9 is provided above the guide rods 11, and a second filter screen 10 is provided below the guide rods 11. When the first motor 3 is working, the first motor 3 drives the shaft 4 to rotate, and through the transmission of the shaft 4, the first grinding roller 5 and the second grinding roller 7 rotate at the same time. Through the mutual cooperation between the first grinding roller 5 and the first grinding cylinder 6 and the second grinding roller 7 and the second grinding cylinder 8, the shaping device can grind the graphite multiple times, and the first filter screen 9 and the second filter screen 10 can filter the graphite ground by the first grinding roller 5 and the second grinding roller 7 respectively.

[0019] A feeding assembly 12 is disposed on one side above the tank body 2 .

[0020] The feed assembly 12 includes a feed pipe 121, the feed pipe 121 is connected to the tank body 2, a cover body 122 is provided above the feed pipe 121, two symmetrical fixed plates 123 are provided on one side of the upper end of the feed pipe 121, the two fixed plates 123 are movably connected to a pressure plate 124 through a pin shaft, the middle part of the pressure plate 124 is fixedly connected to the cover body 122, the side of the pressure plate 124 away from the fixed plate 123 is fixedly connected to a clamping plate 125, a U-shaped seat 126 is provided on the upper end of the side of the feed pipe 121 away from the fixed plate 123, and the middle part of the U-shaped seat 126 is movably connected to a threaded rod 127 through a pin shaft. The threaded rod 127 is provided with a clamping ring 128 above the clamping plate 125. The clamping plate 125 can be clamped on the outside of the threaded rod 127. The pressing plate 124 can rotate around the fixed plate 123. The cover body 122 can rotate around the feed pipe 121 through the cooperation between the pressing plate 124 and the fixed plate 123. The clamping ring 128 is threadedly connected to the threaded rod 127. When the clamping ring 128 is rotated, the clamping ring 128 squeezes the clamping plate 125. Through the cooperation between the clamping ring 128 and the clamping plate 125, the cover body 122 can seal the feed pipe 121.

[0021] A shell 13 is provided on one side below the first grinding cylinder 6, and a second motor 14 is provided in the shell 13. A turntable 15 is provided on the rotating shaft of the second motor 14. The outer side of the turntable 15 is movably connected with the first connecting rod 16. A through slot 17 is provided below the shell 13. The first connecting rod 16 penetrates the through slot 17 and is movably connected with the second connecting rod 18. The second connecting rod 18 is movably connected with the first filter screen 9 below. When the second motor 14 is working, the second motor 14 drives the turntable 15 to rotate. Through the transmission of the turntable 15, the first connecting rod 16 and the second connecting rod 18 can drive the first filter screen 9 and the second filter screen 10 to move in the vertical direction. Through the movement of the first filter screen 9 and the second filter screen 10, the filtering effect of the first filter screen 9 and the second filter screen 10 on graphite is effectively accelerated.

[0022] A discharge pipe 19 is provided at the middle of the lower part of the tank body 2 , and a sealing cover 20 is provided below the discharge pipe 19 . The ground graphite can be discharged through the discharge pipe 19 , and the sealing cover 20 can seal the discharge pipe 19 .

[0023] The outer side of the sealing cover 20 is provided with anti-slip grooves.

[0024] The tank body 2 is provided with a manhole 21 on the first filter screen 9 and the second filter screen 10 , through which the graphite filtered by the first filter screen 9 and the second filter screen 10 can be taken out.

[0025] Specifically, in the utility model, the first motor 3 drives the shaft 4 to rotate, and through the transmission of the shaft 4, the first grinding roller 5 and the second grinding roller 7 rotate at the same time, and through the mutual cooperation between the first grinding roller 5 and the first grinding cylinder 6 and the second grinding roller 7 and the second grinding cylinder 8, the shaping device can grind the graphite multiple times, and the first filter screen 9 and the second filter screen 10 can filter the graphite ground by the first grinding roller 5 and the second grinding roller 7 respectively. At the same time, the second motor 14 drives the turntable 15 to rotate, and through the transmission of the turntable 15, the first connecting rod 16 and the second connecting rod 18 can drive the first filter screen 9 and the second filter screen 10 to move in the vertical direction. Through the movement of the first filter screen 9 and the second filter screen 10, the filtering effect of the first filter screen 9 and the second filter screen 10 on graphite is effectively accelerated.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lithium battery graphite negative electrode material shaping device, comprising a support frame (1), characterized in that: The support frame (1) is provided with a tank body (2) above the support frame (1), a first motor (3) is provided in the middle of the tank body (2), a rotating shaft of the first motor (3) passes through the tank body (2) and is fixedly connected to a shaft (4), the shaft (4) is located inside the tank body (2) and is provided with a first grinding roller (5) at its upper end, a first grinding cylinder (6) matching the first grinding roller (5) is provided below the tank body (2), the shaft (4) is fixedly connected to a second grinding roller (7) below, a second grinding cylinder (8) matching the second grinding roller (7) is provided below the second grinding roller (7), four guide rods (11) arranged in a matrix are inserted on the outer side of the second grinding cylinder (8), a first filter (9) is provided above the guide rod (11), and a second filter (10) is provided below the guide rod (11).

2. A lithium battery graphite negative electrode material shaping device according to claim 1, characterized in that: A feeding assembly (12) is provided on one side above the tank body (2).

3. A lithium battery graphite negative electrode material shaping device according to claim 2, characterized in that: The feed assembly (12) comprises a feed pipe (121), the feed pipe (121) being connected to the tank body (2), a cover body (122) being provided above the feed pipe (121), two symmetrical fixing plates (123) being provided on one side of the upper end of the feed pipe (121), the two fixing plates (123) being movably connected to a pressure plate (124) via a pin shaft, the middle part of the pressure plate (124) being fixedly connected to the cover body (122), the side of the pressure plate (124) away from the fixing plate (123) being fixedly connected to a clamping plate (125), the upper end of the feed pipe (121) away from the fixing plate (123) being provided with a U-shaped seat (126), the middle part of the U-shaped seat (126) being movably connected to a threaded rod (127) via a pin shaft, and the threaded rod (127) being provided with a clamping ring (128) above the clamping plate (125).

4. A lithium battery graphite negative electrode material shaping device according to claim 1, characterized in that: A shell (13) is provided at one side below the first grinding cylinder (6), a second motor (14) is provided in the shell (13), a turntable (15) is provided on the rotating shaft of the second motor (14), the outer side of the turntable (15) is movably connected to the first connecting rod (16), a through groove (17) is provided below the shell (13), the first connecting rod (16) passes through the through groove (17) and is movably connected to the second connecting rod (18), and the second connecting rod (18) is movably connected to the first filter screen (9) below.

5. A lithium battery graphite negative electrode material shaping device according to claim 1, characterized in that: A discharge pipe (19) is provided at the middle portion of the lower portion of the tank body (2), and a sealing cover (20) is provided below the discharge pipe (19).

6. A lithium battery graphite negative electrode material shaping device according to claim 5, characterized in that: The outer side of the sealing cover (20) is provided with anti-slip grooves.

7. A lithium battery graphite negative electrode material shaping device according to claim 1, characterized in that: The tank body (2) is provided with manholes (21) on both the first filter screen (9) and the second filter screen (10).

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