CN217796580U

CN217796580U - Lithium battery negative electrode material production device

Info

Publication number: CN217796580U
Application number: CN202221986225.5U
Authority: CN
Inventors: 朱建
Original assignee: Hunan University Chongqing Research Institute
Current assignee: Hunan University Chongqing Research Institute
Priority date: 2022-07-29
Filing date: 2022-07-29
Publication date: 2022-11-15
Anticipated expiration: 2032-07-29

Abstract

The utility model discloses a lithium battery negative electrode material production device, which belongs to the technical field of power production, comprising a feeding box and a crushing mechanism, wherein the outlet of the feeding box is connected with the inlet of the crushing mechanism, the outlet of the crushing mechanism is connected with a grinding mechanism, the grinding mechanism is provided with a first outlet, the first outlet is connected with a mixing mechanism, the mixing mechanism comprises a mixing box, a high-pressure air pump, a heating box and an argon tank, the lower end of the mixing box is provided with a discharge port, the side wall and the top plate of the mixing box are provided with two air inlets and one air outlet, one air outlet of the mixing box is connected with the inlet of the argon tank, the outlet of the argon tank is connected with the inlet of the heating box, the outlet of the heating box is connected with the inlet of the high-pressure air pump, and the outlet of the high-pressure air pump is connected with the two air inlets of the mixing box; the utility model discloses use high-temperature high-speed argon gas to mix negative electrode material, mix effectual and efficient.

Description

Lithium battery negative electrode material production device

Technical Field

The utility model belongs to the technical field of power production, specifically a lithium cell negative electrode material apparatus for producing.

Background

The negative electrode refers to the end of the power supply with lower potential (potential), in the primary battery, it refers to the electrode with oxidation function, and from physical point of view, it is the electrode from which electrons flow out in the circuit, and the negative electrode material refers to the raw material constituting the negative electrode in the battery, and the common negative electrode materials at present include carbon negative electrode material, tin-based negative electrode material, lithium-containing transition metal nitride negative electrode material, alloy negative electrode material and nano-grade negative electrode material. Among the prior art, the device of production cathode material exists when cathode material need adopt multiple material to mix the preparation in proportion, and multiple material mixes incompletely, if not totally mix need take out remixing, comparatively wasted time and energy.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lithium cell cathode material apparatus for mix inhomogeneous shortcoming during the cathode material production that exists among the solution prior art, the utility model provides a following technical scheme:

the utility model provides a lithium cell cathode material apparatus for producing, including feeding case and rubbing crusher structure, the exit linkage rubbing crusher structure's of feeding case entry, rubbing crusher structure's exit linkage has grinding mechanism, grinding mechanism is provided with first export, first exit linkage has mixing mechanism, mixing mechanism contains the mixing box, high compression pump, heating cabinet and argon gas jar, the lower extreme of mixing box is provided with the discharge gate, be provided with two air inlets and a gas outlet on the lateral wall of mixing box and the roof altogether, the entry linkage of a gas outlet and the argon gas jar of mixing box, the export of argon gas jar and the entry linkage of heating cabinet, the export of heating cabinet and the entry linkage of high compression pump, the export of high compression pump and two air inlets of mixing box are connected.

As a further aspect of the present invention: the crushing mechanism comprises a crushing box, crushing rotating wheels and a first motor, wherein the crushing rotating wheels are arranged in the crushing box, the crushing rotating wheels are a pair and are mutually meshed, and the crushing rotating wheels are driven by the first motor.

As a further aspect of the present invention: the grinding mechanism further comprises a grinding box, a second outlet and a transmission shaft, a second motor is mounted at the top in the grinding box, the output end of the second motor is connected with a grinding block through the transmission shaft, the grinding block is arranged in the grinding box, the first outlet and the second outlet are both arranged at the bottom of the grinding box, a first filter plate is arranged on the first outlet, the second outlet is connected with the inlet of the grinding mechanism through a return pipe, and a powder suction pump is mounted on the return pipe.

As a further aspect of the present invention: the transmission shaft can be telescopically adjusted.

As a further aspect of the present invention: the grinding box and the grinding block are both in an inverted frustum shape, the gap between the inner wall of the grinding box and the outer wall of the grinding block is gradually reduced from top to bottom, and when the transmission shaft is adjusted to the lowest end, the gap between the grinding block and the bottom of the grinding box is zero.

As a further aspect of the present invention: and a second filter plate is arranged on the air outlet of the mixing box.

As a further aspect of the present invention: and a one-way valve is arranged on an air outlet of the mixing box.

As a further aspect of the present invention: and a drying box is arranged on a pipeline connected between the gas outlet of the mixing box and the inlet of the argon tank.

As a further aspect of the present invention: the two first outlets are symmetrically arranged on two sides of the bottom of the grinding box respectively, and the second outlet is arranged in the middle of the bottom of the grinding box.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the high-temperature and high-speed argon is used for mixing the cathode material, so that the mixing effect is good, the efficiency is high, and the time and the energy are saved;

2. high-temperature argon is used as protective gas, so that the cathode material cannot react with water, oxygen and the like and cannot be adhered to the inner wall of the device, and the quality and the manufacturing efficiency of the cathode material are improved;

3. the cathode raw material which cannot pass through the first filter plate is circularly ground until the cathode raw material can pass through the first filter plate, so that the particle size is uniform, and the quality of the lithium battery is improved;

4. the minimum gap between the grinding block and the grinding box is adjustable, and the grinding box is suitable for grinding various particle sizes.

Drawings

To facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic structural diagram of a lithium battery negative electrode material production apparatus;

FIG. 2 is an enlarged view of a part A of an apparatus for producing a negative electrode material for a lithium battery;

FIG. 3 is an enlarged view of a part B of a production apparatus for a negative electrode material for a lithium battery.

In the figure: 1. a feeding box; 2. a crushing mechanism; 201. a crushing box; 202. a crushing rotating wheel; 203. a first motor; 3. a grinding mechanism; 301. grinding a box; 302. grinding blocks; 303. a first outlet; 3031. a first filter plate; 304. a second outlet; 305. a drive shaft; 306. a second motor; 307. a powder suction pump; 308. a return pipe; 4. a mixing mechanism; 401. a mixing box; 4011. a second filter plate; 4012. a one-way valve; 4013. a discharge port; 402. a high pressure air pump; 403. a heating box; 404. an argon tank; 405. and (7) a drying box.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

Please refer to fig. 1-3, in an embodiment of the present invention, an apparatus for producing a lithium battery negative electrode material, including a feeding box 1 and a crushing mechanism 2, an outlet of the feeding box 1 is connected to an inlet of the crushing mechanism 2, an outlet of the crushing mechanism 2 is connected to a grinding mechanism 3, the grinding mechanism 3 is provided with a first outlet 303, the first outlet 303 is connected to a mixing mechanism 4, the mixing mechanism 4 includes a mixing box 401, a high pressure air pump 402, a heating box 403 and an argon tank 404, a lower end of the mixing box 401 is provided with a discharge port 4013, two air inlets and one air outlet are provided on a side wall and a top plate of the mixing box 401, an air outlet of the mixing box 401 is connected to an inlet of the argon tank 404, an outlet of the argon tank 404 is connected to an inlet of the heating box 403, an outlet of the heating box 403 is connected to an inlet of the high pressure air pump 402, an outlet of the high pressure air pump 402 is connected to two air inlets of the mixing box 401.

In one embodiment, referring to fig. 1-3, the transmission shaft 305 is adjusted to adjust the gap between the lowest end of the grinding block 302 and the grinding box 301 to the desired particle size of the negative electrode material, then the negative electrode material is fed into the feeding box 1, the negative electrode material enters the grinding mechanism 2 through a pipeline and reaches the meshing position of the grinding wheel 202 in the grinding box 201, the grinding wheel 202 is driven by the first motor 203 to rotate, at this time, the negative electrode material is primarily ground and enters the grinding mechanism 3 from the outlet of the grinding mechanism 2 and reaches the gap between the grinding box 301 and the grinding block 302 along the pipeline, the grinding block 302 is driven by the second motor 306 through the transmission shaft 305 to rotate, at this time, the negative electrode material is ground into powder with the desired size, enters the first outlet 303 through the first filter plate 3031, then enters the mixing mechanism 4 and enters the mixing box 401 through the pipeline, the air inlet of the mixing box 401 is provided with dry high-temperature high-speed argon gas from the argon tank 404, which is dried by the drying box 405, heated by the heating box 403 and accelerated by the high-pressure gas pump 402, and finally the discharge outlet 4013. If the filtering speed of the cathode material passing through the first filter plate 3031 is slower than the grinding speed, so that the redundant cathode material is accumulated at the first outlet 303, or the cathode material with the filtering holes larger than the filtering holes of the first filter plate 3031 falls to the first outlet 303, the cathode material is sucked to the inlet of the grinding mechanism 3 from the second outlet 304 through the return pipe 308 by the powder suction pump 307, and is ground again until the cathode material completely enters the first outlet 303 through the first filter plate 3031, and then enters the mixing mechanism 4, and the subsequent steps are the same as above.

In this embodiment, the number of the first outlets 303 may be two or four, and the number of the outlets is not limited.

In this embodiment, the anode material to be ground may be one material or a mixture of several materials.

In this embodiment, the output end of the first motor 203 rotates clockwise, so that the meshing position of the crushing rotating wheel 202 moves downwards, and the crushing effect is better.

In the embodiment, each step is protected and dried by dry high-temperature argon, so that the cathode material is free from chemical reaction and agglomeration, and the efficiency and the quality are improved.

In this embodiment, the two air inlets of the mixing box 401 are respectively disposed on the top plate and the side wall and are not disposed on the same side, so that the mixing is more sufficient.

In this embodiment, the check valve 4012 is behind the second filter plate 4011, so that the negative electrode material does not enter the check valve 4012, which may block the pipeline.

In this embodiment, the second filter plate 4011 functions to prevent the anode material from entering the argon tank 404.

In this embodiment, check valve 4012 functions to prevent backflow of undried argon gas into mixing box 401.

In this embodiment, the first filter plate 3031 can be replaced as required, so that the device can be applied to various particle sizes.

The working principle is as follows:

use the utility model provides a pair of during lithium cell cathode material apparatus for producing, adjust transmission shaft 305 earlier, make the gap between grinding block 302 bottommost end and grinding box 301 transfer to required cathode material particle diameter, put cathode material to feeding box 1 again, cathode material passes through in the pipeline gets into rubbing crusher constructs 2, reach the meshing department of grinding runner 202 in the grinding box 201, grinding runner 202 rotates under the drive of first motor 203, cathode material is by preliminary grinding this moment, get into grinding mechanism 3 from rubbing crusher constructs 2's export, in the gap between grinding box 301 and grinding block 302 is reachd along the pipeline, grinding block 302 rotates under the drive of second motor 306 through transmission shaft 305, cathode material is ground into the powder of required size this moment, get into first export 303 through first filter 3031, then get into mixing mechanism 4, get into mixing box 401 through the pipeline, the air inlet of mixing box 401 has come from the gas pitcher 404 and passes through drying box 405 drying, heating box 403 heats and the dry high-temperature argon gas of high pressure with high-speed with high pressure, under the effect of high-speed argon gas, cathode material is by mixing box 401, the final discharge gate 4013 goes out. If the filtering speed of the cathode material passing through the first filter plate 3031 is slower than the grinding speed, so that the redundant cathode material is accumulated at the first outlet 303, or the cathode material with the filtering holes larger than those of the first filter plate 3031 falls to the first outlet 303, the cathode material is sucked to the inlet of the grinding mechanism 3 from the second outlet 304 through the return pipe 308 by the powder suction pump 307, and is ground again until the cathode material completely passes through the first filter plate 3031 and enters the first outlet 303, and then enters the mixing mechanism 4, and the subsequent steps are the same as above.

The foregoing is illustrative and explanatory of the structure of the invention, and it is intended that those skilled in the art who have the structure described herein be able to make various modifications, additions or substitutions thereto, without departing from the scope of the invention as defined in the claims.

Claims

1. The utility model provides a lithium cell anode material apparatus for producing, includes feeding case (1) and rubbing crusher structure (2), its characterized in that: the entry of exit linkage rubbing crusher mechanism (2) of feeding case (1), the exit linkage of rubbing crusher mechanism (2) grinds mechanism (3), it is provided with first export (303) to grind mechanism (3), first export (303) are connected with mixing mechanism (4), mixing mechanism (4) contain mixing box (401), high compression pump (402), heating cabinet (403) and argon gas jar (404), the lower extreme of mixing box (401) is provided with discharge gate (4013), be provided with two air inlets and one gas outlet on the lateral wall of mixing box (401) and the roof altogether, a gas outlet of mixing box (401) and the access connection of argon gas jar (404), the export of argon gas jar (404) and the access connection of heating cabinet (403), the export of heating cabinet (403) and the access connection of high compression pump (402), the export of high compression pump (402) and two air inlets of mixing box (401) are connected.

2. The lithium battery negative electrode material production device according to claim 1, wherein the crushing mechanism (2) comprises a crushing box (201), crushing rotating wheels (202) and a first motor (203), the crushing rotating wheels (202) are arranged in the crushing box (201), the crushing rotating wheels (202) are in a pair and are meshed with each other, and the crushing rotating wheels (202) are driven by the first motor (203).

3. The lithium battery negative electrode material production device according to claim 1, wherein the grinding mechanism (3) further comprises a grinding box (301), a second outlet (304) and a transmission shaft (305), a second motor (306) is installed at the top inside the grinding box (301), the output end of the second motor (306) is connected with a grinding block (302) through the transmission shaft (305), the grinding block (302) is arranged inside the grinding box (301), the first outlet (303) and the second outlet (304) are both arranged at the bottom of the grinding box (301), the first outlet (303) is provided with a first filter plate (3031), the second outlet (304) is connected with the inlet of the grinding mechanism (3) through a return pipe (308), and the return pipe (308) is provided with a powder suction pump (307).

4. The apparatus for producing a negative electrode material for a lithium battery as claimed in claim 3, wherein said drive shaft (305) is telescopically adjustable.

5. The lithium battery negative electrode material production apparatus as claimed in claim 4, wherein the grinding box (301) and the grinding block (302) are both in the shape of an inverted circular truncated cone, the gap between the inner wall of the grinding box (301) and the outer wall of the grinding block (302) is gradually reduced from top to bottom, and when the transmission shaft (305) is adjusted to the lowermost end, the gap between the grinding block (302) and the bottom of the grinding box (301) is zero.

6. The lithium battery negative electrode material production device as claimed in claim 1, wherein a second filter plate (4011) is disposed on the air outlet of the mixing box (401).

7. The lithium battery negative electrode material production device as claimed in claim 1 or 6, wherein a one-way valve (4012) is arranged on an air outlet of the mixing box (401).

8. The apparatus for producing a negative electrode material for a lithium battery according to claim 7, wherein a drying chamber (405) is provided in a pipe connecting between an outlet of the mixing chamber (401) and an inlet of the argon gas tank (404).

9. The apparatus for producing a negative electrode material for a lithium battery as claimed in claim 3, wherein said first outlet (303) is provided in two and symmetrically disposed at two sides of the bottom of the grinding chamber (301), and said second outlet (304) is disposed at a middle position of the bottom of the grinding chamber (301).