Fine constant-speed stirring device for positive electrode material of lithium ion battery

Abstract

The utility model discloses a fine constant-speed stirring device for a positive electrode material of a lithium ion battery, relates to the technical field of preparation of electrode materials, and aims to solve the problem that a stirring assembly at a fixed position cannot uniformly stir a material at the top of slurry when the material is added while stirring in the prior art. A supporting platform is arranged on the top of the barrel body, a driving motor is arranged on the supporting platform, a conveying barrel is arranged in the barrel body, the bottom of the conveying barrel is a slope, a notch is formed in the slope, an auger shaft is arranged in the conveying barrel and rotationally connected to the bottom of the barrel body, the other end of the auger shaft is connected with an output shaft of the driving motor, and auger blades are arranged on the auger shaft. According to the utility model, the forward and reverse rotation of the auger shaft is controlled, so that the slurry at the bottom of the barrel body is conveyed to the upper part, the circulation of the slurry at the upper layer and the slurry at the lower layer is realized, and the reverse rotation assists in discharging the slurry from the discharge hole.

Description

Technical Field

[0001] The utility model relates to the technical field of electrode material preparation, in particular to a fine and uniform stirring device for positive electrode materials of lithium ion batteries. Background Art

[0002] In the production process of lithium batteries, the mixing of lithium battery cell slurry is an important link in the entire production process of lithium-ion batteries that affects the quality of products. The quality of slurry dispersion directly affects the quality of subsequent lithium-ion battery production and the performance of its products. The lithium-ion battery positive electrode material mixing device is mainly used in the process of mixing positive and negative electrode materials of batteries, replacing the automatic adjustment device for long-term manual mixing. After the device is used, the machine can be responsible for uniform mixing while manual materials are added to prevent adhesion and agglomeration caused by uneven mixing, and bubbles and other phenomena.

[0003] Chinese patent CN220657257U discloses a battery slurry stirring device, which adopts a technical solution including a stirring barrel, through which the slurry enters the stirring barrel, and a driving component drives the stirring barrel to rotate in both positive and negative directions. The stirring barrel includes a stirring component and a scraper component. The stirring component is used to stir the slurry in the barrel, and the scraper rotates and then stirs to achieve stirring of the slurry. This technical solution also has the following shortcomings. During the process of mixing the positive and negative electrode materials of the battery, since it is necessary to stir and add materials at the same time, the stirring component in a fixed position may not be able to evenly stir the material on the top of the slurry. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a fine and uniform stirring device for positive electrode materials of lithium ion batteries, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above-mentioned purpose, the utility model discloses a lithium-ion battery positive electrode material fine uniform stirring device, which adopts a technical solution comprising a barrel body. The bottom of the barrel body is provided with an inclined surface, the top of the barrel body is provided with a support platform, the support platform is provided with a driving motor, a conveying barrel is provided inside the barrel body, the bottom of the conveying barrel is a slope, a notch is provided on the slope, an auger shaft is provided inside the conveying barrel, the auger shaft is rotatably connected to the bottom of the barrel body, the other end of the auger shaft is connected to the output shaft of the driving motor, the auger shaft is provided with auger blades, the auger shaft is provided with a stirring mechanism, the stirring mechanism includes a stabilizing ring, the stabilizing ring is located below the stirring mechanism, and is rotatably connected to the outer wall of the conveying barrel.

[0006] As a preferred technical solution of the utility model, a discharge port is provided at the bottom of the barrel body, and a valve is provided on the discharge port. Discharge is achieved by opening the valve and reversing the auger blades.

[0007] As a preferred technical solution of the utility model, a support frame is provided on the inclined surface outside the barrel body, which is used to support the barrel body on a platform or the ground to leave a discharge height.

[0008] As a preferred technical solution of the utility model, the auger shaft is rotatably connected to the barrel body via a bearing seat, which assists the rotation of the auger shaft and improves rotation stability.

[0009] As an optimal technical solution of the utility model, the stirring mechanism includes a scraper, which is fixedly connected to the auger shaft and is provided with a stirring paddle. The stabilizing ring is connected to the scraper through the stirring paddle. The scraper is used to scrape off the slurry stuck to the inner wall of the barrel body, the stirring paddle is used to stir the slurry at the bottom of the barrel body, and the stabilizing ring is used to stabilize the bottom of the stirring device to prevent shaking.

[0010] As a preferred technical solution of the utility model, the inner side of the stabilizing ring is rotatably connected to a rotating wheel, and the rotating wheel is tangent to the outer wall of the conveying barrel. The rotating wheel assists the rotation to improve stability.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the utility model controls the forward and reverse rotation of the auger shaft to transport the slurry at the bottom of the barrel to the top, realizes the circulation of the upper and lower slurries, and realizes more refined stirring; the reverse rotation assists the slurry to be discharged from the discharge port; the stirring mechanism is fixed to the auger shaft, so that the scraper and the stirring paddle of the auger shaft work synchronously during operation; the structure is simple and not prone to failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 This is the front view of the structure of the utility model;

[0014] Figure 3 This is a cross-sectional view of the structure of the utility model Figure 1 ;

[0015] Figure 4 This is a cross-sectional view of the structure of the utility model Figure 2

[0016] Figure 5 This is a cross-sectional view of the structure of the utility model Figure 3 ;

[0017] Figure 6 This is a cross-sectional view of the structure of the utility model Figure 4 .

[0018] In the figure: 1. barrel body; 101. support frame; 102. inclined plane; 103. support platform; 104. discharge port; 105. valve; 2. conveying barrel; 201. slope; 202. notch; 3. bearing seat; 4. auger shaft; 401. auger blade; 5. drive motor; 6. stirring mechanism; 601. scraper; 602. stirring paddle; 603. stabilizing ring; 604. rotor. DETAILED DESCRIPTION

[0019] 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. Example 1

[0020] like Figures 1 to 6 As shown, the utility model discloses a fine uniform stirring device for positive electrode materials of lithium ion batteries, and the technical scheme adopted is that it comprises a barrel body 1, the bottom of the barrel body 1 is an inclined surface 102, a discharge port 104 is provided at the bottom of the barrel body 1, a valve 105 is provided on the discharge port 104, a support frame 101 is provided on the inclined surface 102 at the bottom of the barrel body 1, a support platform 103 is provided on the top of the barrel body 1, a driving motor 5 is provided on the support platform 103, a bearing seat 3 is provided at the middle of the bottom of the barrel body 1, a conveying barrel 2 is provided in the barrel body 1, a slope 201 is provided at the bottom of the conveying barrel 2, a notch 202 is provided on the slope 201, there are four notches 202, and the notches 202 are arranged in a ring array on the slope 201, and the conveying barrel 2 is provided with a plurality of grooves 202. There is an auger shaft 4, on which an auger blade 401 is provided. The auger shaft 4 is rotatably connected to the barrel body 1 through the bearing seat 3. The other end of the auger shaft 4 is connected to the output shaft of the drive motor 5. There is a stirring mechanism 6 on the auger shaft 4. The stirring mechanism 6 includes a scraper 601. There are four groups of scrapers 601, which are arranged in a circular array on the auger shaft 4. The scraper 601 fits the inner wall of the barrel body 1. The scraper 601 is connected to a stirring paddle 602, and the stirring paddle 602 is connected to a stabilizing ring 603. The stabilizing ring 603 is concentric with the conveying barrel 2. The inner ring of the stabilizing ring 603 is rotatably connected to a rotating wheel 604. There are four rotating wheels 604, which are arranged in a circular array to the inner side of the stabilizing ring 603.

[0021] The working principle of the utility model is as follows: when stirring the lithium battery slurry, first put the slurry into the barrel body 1, start the drive motor 5, and the slurry flows into the conveying barrel 2 through the inclined surface 102 and the notch 202. The drive motor 5 drives the auger shaft 4 and the auger blade 401 to rotate, and the slurry is transported to the top of the conveying barrel 2 through the auger blade 401 and then falls. During this process, the slurry inside the conveying barrel 2 is stirred, and the slurry at the bottom of the barrel body 1 is transported to the top to make it more uniform. The stirring paddle 602 of the stirring mechanism 6 stirs the slurry at the bottom of the barrel body 1, and the scraper 601 sticks to the slurry scraper 601 on the inner wall of the barrel body 1 to make the stirring more uniform. When the slurry is discharged, first open the valve 105, and then rotate the auger shaft 4 in the opposite direction to move the slurry downward, so that it is squeezed out from the discharge port 104.

[0022] The circuits and mechanical connections involved in the present utility model are conventional means used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments, which belong to common knowledge.

[0023] Components not described in detail herein are prior art.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for finely stirring positive electrode materials of lithium-ion batteries at a uniform speed, comprising a barrel (1), characterized in that: The bottom of the barrel body (1) is provided with an inclined surface (102), the top of the barrel body (1) is provided with a support platform (103), the support platform (103) is provided with a drive motor (5), a conveying barrel (2) is provided inside the barrel body (1), the bottom of the conveying barrel (2) is a slope (201), a notch (202) is provided on the slope (201), an auger shaft (4) is provided inside the conveying barrel (2), the auger shaft (4) is rotatably connected to the bottom of the barrel body (1), the other end of the auger shaft (4) is connected to the output shaft of the drive motor (5), the auger shaft (4) is provided with an auger blade (401), the auger shaft (4) is provided with a stirring mechanism (6), the stirring mechanism (6) comprises a stabilizing ring (603), the stabilizing ring (603) is located below the stirring mechanism (6) and is rotatably connected to the outer wall of the conveying barrel (2).

2. A lithium-ion battery positive electrode material fine uniform stirring device according to claim 1, characterized in that: A discharge port (104) is provided at the bottom of the barrel body (1), and a valve (105) is provided on the discharge port (104).

3. A lithium-ion battery positive electrode material fine uniform stirring device according to claim 2, characterized in that: A support frame (101) is provided on the inclined surface (102) outside the barrel body (1).

4. The device for fine and uniform stirring of positive electrode materials for lithium-ion batteries according to claim 1, characterized in that: The auger shaft (4) is rotatably connected to the barrel body (1) via a bearing seat (3).

5. The device for fine and uniform stirring of positive electrode materials for lithium-ion batteries according to claim 1, characterized in that: The stirring mechanism (6) comprises a scraper (601), the scraper (601) is fixedly connected to the auger shaft (4), a stirring paddle (602) is provided on the scraper (601), and the stabilizing ring (603) is connected to the scraper (601) via the stirring paddle (602).

6. A lithium-ion battery positive electrode material fine uniform stirring device according to claim 5, characterized in that: The inner side of the stabilizing ring (603) is rotatably connected to a rotating wheel (604), and the rotating wheel (604) is tangent to the outer wall of the conveying barrel (2).

Images