A premixing device for lithium-ion battery anode materials

Abstract

This utility model relates to the field of battery anode material premixing technology and discloses a lithium-ion battery anode material premixing device, including a stirring tank and a drive motor. By controlling the lower stirring rod to connect with the upper stirring rod, and further controlling the drive motor to make the upper and lower stirring rods rotate synchronously, the second scraper will scrape the material on the filter plate, and the material will be crushed by the roller. The material falling off the filter plate will enter the interior of the stirring tank. When the hopper is opened, the material will be stirred by the first scraper and scraped out of the hopper, thereby increasing the mixing degree of the material. By controlling the matching of the buckle and the buckle seat, and making the stirring tank, filter plate and expansion tank stacked in sequence, the device can be assembled. In use, by pulling the buckle to release the buckle from the buckle seat, the expansion tank can be removed from the stirring tank. Furthermore, the internal components of the device can be disassembled, which facilitates the cleaning and maintenance of the device.

Description

Technical Field

[0001] This utility model relates to the field of battery anode material premixing technology, specifically a lithium-ion battery anode material premixing device. Background Technology

[0002] A lithium-ion battery anode material premixing device is a piece of equipment used to mix anode materials. It aims to improve mixing efficiency and uniformity, and ensure the stability and consistency of battery performance. It is a special equipment for uniformly mixing anode raw materials before battery production. Its core function is to solve problems such as material agglomeration and uneven density, and to ensure the stability of subsequent processes and the consistency of battery performance.

[0003] Chinese patent CN218339641U discloses a premixing device for lithium-ion battery anode materials, comprising a mixing device. The upper end of the mixing device is connected to a feed pipe. Two symmetrically arranged conveying pipes are installed on the side wall of the feed pipe. Each conveying pipe has a hopper at its upper end. A motor is installed at the upper end of the feed pipe, and a rotating rod is installed at the output end of the motor. The rotating rod passes through the upper side wall of the feed pipe and is rotatably connected to it. Multiple stirring rods are installed on the rotating rod, and a spiral conveying blade is installed below the stirring rods. An anti-clogging mechanism is installed on the rotating rod. This invention not only premixes raw materials but also prevents clogging during conveying into the mixing device, thereby improving the mixing efficiency of the device.

[0004] The above-mentioned device can improve the mixing efficiency of the mixing equipment. However, the negative electrode material in the existing device falls down quickly during use and has less contact with the stirring rod. Therefore, the material may accumulate or be mixed unevenly. In addition, the material may adhere to the inside of the device, and it is difficult to open the existing device to clean its interior. Therefore, there is a need to provide a lithium-ion battery negative electrode material premixing device. Utility Model Content

[0005] The purpose of this invention is to provide a premixing device for lithium-ion battery negative electrode materials, so as to solve the problems of poor stirring effect of existing devices and difficulty in disassembling the devices for component replacement or cleaning.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a lithium-ion battery negative electrode material premixing device, comprising a mixing tank and a drive motor, wherein hoppers are fixedly installed on both sides of the mixing tank, and a stirring mechanism is provided on the drive motor; the stirring mechanism comprises a lower stirring rod, an upper stirring rod, and a filter plate, wherein the lower stirring rod is rotatably installed inside the mixing tank, the upper stirring rod is fixedly installed on the output end of the drive motor, a first scraper is fixedly installed on both sides of the lower stirring rod, a second scraper is fixedly installed on both sides of the upper stirring rod, and a grinding wheel is rotatably installed on the other two sides of the upper stirring rod.

[0007] Preferably, the bottom of the mixing tank is a cone, and the lower stirring rod is rotatably mounted on the upper part of the cone, and the first scraper is in close contact with the cone, while the second scraper and the grinding wheel are both adapted to the filter plate.

[0008] Preferably, a square block is fixedly installed at one end of the lower stirring rod, and the upper stirring rod is adapted to the square block.

[0009] Preferably, the mixing tank is provided with a loading and unloading mechanism, the loading and unloading mechanism includes an expansion tank, the expansion tank is fixedly installed on the drive motor, and fasteners are fixedly installed on both sides of the expansion tank. Limiting seats are fixedly installed on both sides of the mixing tank. A buckle is slidably installed inside the limiting seat. Two buffer springs are fixedly installed side by side between the buckle and the limiting seat.

[0010] Preferably, a protrusion is fixedly installed on the lower part of the buckle, and a small hole is opened on the buckle frame, with the protrusion and the small hole being adapted to each other.

[0011] Preferably, the inner diameters of the mixing tank and the expansion tank are the same, and the filter plate is sandwiched between the mixing tank and the expansion tank.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1) This device for premixing lithium-ion battery anode materials controls the lower stirring rod to connect with the upper stirring rod, and further controls the drive motor to make the upper and lower stirring rods rotate synchronously. At this time, the second scraper will scrape the material on the filter plate, and the material will be crushed by the roller. The material falling off the filter plate will enter the mixing tank. Benefiting from the conical bottom of the mixing tank and the first scraper being close to the inner wall of the mixing tank, when the hopper is opened, the material will be scraped out of the hopper by the first scraper, thereby increasing the mixing degree of the material.

[0014] 2) This device for premixing lithium-ion battery negative electrode materials can be assembled by controlling the matching of the buckle and the buckle seat, and stacking the mixing tank, filter plate and expansion tank in sequence. In use, by pulling the buckle to release the buckle from the buckle seat, the expansion tank can be taken off the mixing tank. Furthermore, the internal components of the device can be disassembled, which facilitates the cleaning and maintenance of the device. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of a lithium-ion battery negative electrode material premixing device according to an embodiment of the present invention;

[0016] Figure 2 This is a cross-sectional view of the mixing tank in an embodiment of the present invention;

[0017] Figure 3 This is a cross-sectional view of the lower stirring rod and the upper stirring rod in an embodiment of the present invention;

[0018] Figure 4 This is a cross-sectional view of the limiting seat in an embodiment of the present utility model.

[0019] In the diagram: 1. Mixing tank; 2. Drive motor; 3. Hopper; 4. Mixing mechanism; 401. Lower mixing rod; 402. Upper mixing rod; 403. Filter plate; 404. First scraper; 405. Second scraper; 406. Roller; 5. Loading and unloading mechanism; 501. Expansion tank; 502. Buckle seat; 503. Limiting seat; 504. Buckle frame; 505. Buffer spring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1

[0022] Combination Figures 1-3A lithium-ion battery negative electrode material premixing device includes a mixing tank 1 and a drive motor 2. Hoppers 3 are fixedly installed on both sides of the mixing tank 1. A stirring mechanism 4 is provided on the drive motor 2. The stirring mechanism 4 includes a lower stirring rod 401, an upper stirring rod 402, and a filter plate 403. The lower stirring rod 401 is rotatably installed inside the mixing tank 1, and the upper stirring rod 402 is fixedly installed on the output end of the drive motor 2. First scrapers 404 are fixedly installed on both sides of the lower stirring rod 401, and second scrapers 405 are fixedly installed on both sides of the upper stirring rod 402. Rollers 406 are rotatably installed on the other two sides of the upper stirring rod 402.

[0023] The bottom of the mixing tank 1 is conical, and the lower mixing rod 401 is rotatably mounted on the upper part of the cone. The first scraper 404 is in close contact with the cone, and the second scraper 405 and the grinding wheel 406 are both adapted to the filter plate 403. A square block is fixedly installed at one end of the lower mixing rod 401, and the upper mixing rod 402 is adapted to the square block. In use, the upper mixing rod 402 is rotated by controlling the drive motor 2. When the material is put into the upper part of the filter plate 403, the grinding wheel 406 will crush the material. Meanwhile, under the action of the second scraper 405, the material falls from the filter plate 403 into the mixing tank 1. Benefiting from the matching of the lower stirring rod 401 and the upper stirring rod 402, the lower stirring rod 401 will rotate synchronously with the upper stirring rod 402, thereby causing the first scraper 404 to rotate to achieve material mixing. The bottom of the mixing tank 1 is a cone, which can ensure that the material is dispersed on the edge of the mixing tank 1, making it easy for the first scraper 404 to discharge the material into and out of the hopper 3. When in use, simply open the hopper 3.

[0024] Example 2

[0025] See Figure 4 The mixing tank 1 is equipped with a loading and unloading mechanism 5, which includes an expansion tank 501. The expansion tank 501 is fixedly installed on the drive motor 2, and fasteners 502 are fixedly installed on both sides of the expansion tank 501. Limiting seats 503 are fixedly installed on both sides of the mixing tank 1. A buckle 504 is slidably installed inside the limiting seat 503. Two buffer springs 505 are fixedly installed side by side between the buckle 504 and the limiting seat 503.

[0026] A protrusion is fixedly installed on the lower part of the buckle 502, and a small hole is opened on the buckle 504, with the protrusion and the small hole being compatible. The inner diameters of the mixing tank 1 and the expansion tank 501 are the same. The filter plate 403 is clamped between the mixing tank 1 and the expansion tank 501. In use, the filter plate 403 and the expansion tank 501 are stacked on the mixing tank 1 in sequence, so that the buckle 502 and the buckle 504 are matched and connected. Under the action of the buffer spring 505, the buckle 504 is embedded in the buckle 502, thereby realizing the connection between the mixing tank 1 and the expansion tank 501. Benefiting from the support effect of the buffer spring 505 on the buckle 504, the buckle 504 can be controlled to release the restriction on the buckle 502 during use, thereby separating the mixing tank 1 and the expansion tank 501, making the device easy to clean or replace internal parts.

[0027] In actual operation, the upper stirring rod 402 is rotated by controlling the drive motor 2. When the material is put into the upper part of the filter plate 403, the grinding wheel 406 will crush the material. At the same time, under the action of the second scraper 405, the material falls from the filter plate 403 into the mixing tank 1. Thanks to the matching of the lower stirring rod 401 and the upper stirring rod 402, the lower stirring rod 401 will rotate synchronously with the upper stirring rod 402, thereby causing the first scraper 404 to rotate to realize the mixing of the material. The bottom of the mixing tank 1 is a cone, which can ensure that the material is dispersed on the edge of the mixing tank 1, making it easy for the first scraper 404 to put the material into and out of the hopper 3. When in use, the hopper 3 can be opened.

[0028] The filter plate 403 and the expansion tank 501 are stacked on the mixing tank 1 in sequence, so that the buckle 502 and the buckle frame 504 are matched and connected. Under the action of the buffer spring 505, the buckle frame 504 is embedded in the buckle 502, thereby realizing the connection between the mixing tank 1 and the expansion tank 501. Benefiting from the support effect of the buffer spring 505 on the buckle frame 504, the buckle frame 504 can be controlled to release the restriction on the buckle 502 during use, thereby separating the mixing tank 1 from the expansion tank 501, making the device easy to clean or replace internal parts.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lithium-ion battery negative electrode material premixing device, comprising a stirring tank (1) and a drive motor (2), wherein hoppers (3) are fixedly installed on both sides of the stirring tank (1), characterized in that: The drive motor (2) is equipped with a stirring mechanism (4); The stirring mechanism (4) includes a lower stirring rod (401), an upper stirring rod (402), and a filter plate (403). The lower stirring rod (401) is rotatably installed inside the stirring tank (1). The upper stirring rod (402) is fixedly installed on the output end of the drive motor (2). A first scraper (404) is fixedly installed on both sides of the lower stirring rod (401). A second scraper (405) is fixedly installed on both sides of the upper stirring rod (402). A grinding wheel (406) is rotatably installed on the other two sides of the upper stirring rod (402).

2. The lithium-ion battery anode material premixing device according to claim 1, characterized in that: The bottom of the mixing tank (1) is a cone, and the lower stirring rod (401) is rotatably installed on the upper part of the cone. The first scraper (404) is in close contact with the cone, and the second scraper (405) and the roller (406) are both adapted to the filter plate (403).

3. The lithium-ion battery anode material premixing device according to claim 1, characterized in that: A square block is fixedly installed at one end of the lower stirring rod (401), and the upper stirring rod (402) is adapted to the square block.

4. The lithium-ion battery anode material premixing device according to claim 2, characterized in that: The mixing tank (1) is provided with a loading and unloading mechanism (5). The loading and unloading mechanism (5) includes an expansion tank (501). The expansion tank (501) is fixedly installed on the drive motor (2). Both sides of the expansion tank (501) are fixedly installed with buckles (502). Both sides of the mixing tank (1) are fixedly installed with limit seats (503). The limit seats (503) are slidably installed with buckles (504) inside. Two buffer springs (505) are fixedly installed side by side between the buckles (504) and the limit seats (503).

5. A lithium-ion battery anode material premixing device according to claim 4, characterized in that: The lower part of the buckle (502) is fixedly installed with a protrusion, and the buckle frame (504) has a small hole, and the protrusion is adapted to the small hole.

6. A lithium-ion battery anode material premixing device according to claim 4, characterized in that: The inner diameters of the mixing tank (1) and the expansion tank (501) are the same, and the filter plate (403) is sandwiched between the mixing tank (1) and the expansion tank (501).

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