Differential homogenizing device for lithium battery slurry

Abstract

The utility model relates to the technical field of homogenizing equipment, and discloses a lithium battery slurry differential homogenizing device which comprises a homogenizing tank, an upper plate and a lifting plate, a main stirring rod is rotatably mounted in the middle of the bottom of the lifting plate, and auxiliary stirring rods are rotatably mounted at the bottom of the lifting plate on two sides of the main stirring rod. An annular rail is fixed to the outer circle of the bottom of the lifting plate in a surrounding mode, an annular plate is rotatably inserted into the annular rail, an annular fluted disc is fixed to the bottom of the annular plate, and scraping pieces are vertically fixed to the two sides of the lower portion of the annular fluted disc. According to the technical scheme, the main stirring rod and the auxiliary stirring rod are arranged at the bottom of the lifting plate, differential transmission is achieved between the main stirring rod and the auxiliary stirring rod through the driving teeth and the driven teeth, in addition, the fluted disc is arranged and can be further driven in a decelerating mode, and only a single motor is used for driving; and the purposes of efficiently homogenizing and mixing the slurry at different stirring speeds and driving the scraping blade to continuously scrape the inner wall of the homogenizing tank so as to reduce the adhesion of the slurry to the inner wall can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of homogenization equipment, in particular to a lithium battery slurry differential homogenization device. Background Art

[0002] Lithium battery is a kind of battery that uses lithium metal or lithium alloy as positive / negative electrode material and non-aqueous electrolyte solution. The positive and negative electrode materials of lithium-ion batteries are mainly a mixture of active materials, conductive agents, binders and solvents. Homogenization is to mix these components evenly in a certain proportion to ensure the stability and consistency of battery performance. It mainly uses high-speed rotating blades or stirring rods to provide higher shear force to the slurry, so that the various components in the slurry are fully mixed.

[0003] The efficiency of stirring and homogenizing by high-speed paddles or stirring rods alone is low, and the viscosity of lithium battery slurry is relatively high. During the homogenization process, the slurry is easily coated on the inner wall of the tank, affecting the homogenization effect. Therefore, we propose a lithium battery slurry differential homogenization device. Utility Model Content

[0004] The purpose of the utility model is to provide a lithium battery slurry differential homogenization device, by arranging a main stirring rod and an auxiliary stirring rod at the bottom of the lifting plate, and differential transmission between the two is achieved through driving teeth and driven teeth. In addition, a gear plate is also provided which can be driven by further reducing speed. Only a single motor is used for driving, and efficient homogenization mixing of the slurry can be achieved by utilizing different stirring speeds, driving the scraper to continuously scrape the inner wall of the homogenization tank to reduce the slurry sticking to the inner wall, thereby solving the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lithium battery slurry differential homogenization device, comprising a homogenization tank, an upper plate and a lifting plate, a support plate is fixed around the outer ring of the homogenization tank, the upper plate is supported and fixed above the homogenization tank and the support plate, electric push rods are installed on both sides of the surface of the upper plate, the lifting plate cover is placed above the homogenization tank, and the ends of the electric push rods are fixed on both sides of the surface of the lifting plate; a main stirring rod is rotatably installed in the middle of the bottom of the lifting plate, and the main stirring rod is connected to the motor installed on the surface of the lifting plate above it. Auxiliary stirring rods are rotatably installed at the bottom of the lifting plate on both sides of the main stirring rod, and driving teeth are installed on the upper outer ring of the main stirring rod. The driving teeth are meshed with driven teeth installed on the outer ring of the auxiliary stirring rod, and the diameter of the driving teeth is smaller than the diameter of the driven teeth; a ring rail is fixed around the outer ring of the bottom of the lifting plate, and a ring plate is rotatably inserted inside the ring rail. An annular gear disk is fixed at the bottom of the ring plate, and the inner ring of the annular gear disk is meshed with the driven teeth. The outer diameter of the driven teeth is smaller than the inner diameter of the annular gear disk. Scrapers are vertically fixed on both sides of the lower side of the annular gear disk, and the scrapers are in contact with the inner wall of the homogenization tank.

[0006] By adopting the above technical solution, after the slurry is placed inside the homogenizing tank, the motor is started to drive the main stirring rod and the auxiliary stirring rod to rotate in opposite directions at high speed and low speed respectively, so as to efficiently stir the slurry for homogenization. At the same time, the driving teeth are used to cooperate with the annular gear disk to drive the scraping blade to rotate at a lower speed, scrape the inner wall of the homogenizing tank, reduce the slurry adhered to the inner wall, and ensure the homogenization effect.

[0007] Optionally, a through hole is provided at the middle position of the surface of the upper plate, and the inner diameter of the through hole is larger than the outer diameter of the motor.

[0008] By adopting the above technical solution, when the lifting plate is driven to rise, the motor can be placed in the through hole to avoid the motor blocking the normal rising of the lifting plate.

[0009] Optionally, both the main stirring rod and the auxiliary stirring rod are rotatably installed at the bottom of the lifting plate through bearings, and the bearings are embedded in the bottom surface of the lifting plate.

[0010] Optionally, rolling grooves are provided on the upper and lower surfaces inside the ring rail and on the upper and lower surfaces of the ring plate, and a plurality of balls are evenly supported between the rolling grooves of the ring plate and the rolling grooves of the ring rail.

[0011] By adopting the above technical solution, the balls are used to roll in the rolling grooves, so that the ring plate can rotate smoothly in the ring rail.

[0012] Optionally, a plurality of supporting feet are vertically supported and fixed on the outer circle at the bottom of the support plate, and the supporting feet are equidistantly arranged.

[0013] By adopting the above technical solution, the support plate and the homogenizing tank are evenly supported and fixed through the supporting feet.

[0014] Optionally, the horizontal rods on the outer circles of the main stirring rod and the auxiliary stirring rod are staggered at different heights.

[0015] By adopting the above technical solution, the horizontal rods of the main stirring rod and the auxiliary stirring rod that are staggered in distribution will not affect each other during rotation.

[0016] Compared with the prior art, the beneficial effects of the technical solution of the present application are as follows:

[0017] 1. In the technical solution of the present application, a main stirring rod and an auxiliary stirring rod are provided at the bottom of the lifting plate, and the two are differentially driven through driving teeth and driven teeth. In addition, a gear disk is provided and can be further decelerated and driven. Only a single motor is used for driving, which can realize the efficient homogenization and mixing of the slurry at different stirring speeds, and drive the scraping blade to continuously scrape the inner wall of the homogenizing tank to reduce the adhesion of the slurry to the inner wall.

[0018] 2. The technical solution of this application drives the driven gear to rotate by reducing the speed of the driving gear, and then drives the annular gear disk to further reduce the speed of rotation by the driven gear, so that the scraping blade rotates at a low speed, ensuring that there is sufficient scraping force to scrape off the slurry. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] By reading the following detailed description of the non-limiting embodiments with reference to the accompanying drawings, other features, objects and advantages of the present utility model will become more apparent:

[0020] Figure 1 It is a schematic diagram of the overall structure of the differential homogenizing device for lithium battery slurry of the present utility model;

[0021] Figure 2 It is a schematic diagram of the internal structure of the homogenizing tank of the differential homogenizing device for lithium battery slurry of the present utility model;

[0022] Figure 3 It is a schematic diagram of the detailed structure at A of the differential homogenizing device for lithium battery slurry of the present utility model.

[0023] In the figure: 1, homogenizing tank; 11, support plate; 2, upper plate; 21, through hole; 22, electric push rod; 3, lifting plate; 31, main stirring rod; 311, driving gear; 32, auxiliary stirring rod; 321, driven gear; 33, motor; 34, ring track; 4, annular gear disk; 41, scraping blade; 42, ring plate; 5, rolling groove; 51, ball. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Please refer to Figures 1-3 , the present utility model provides a technical solution: a differential homogenizing device for lithium battery slurry, including a homogenizing tank 1, an upper plate 2 and a lifting plate 3. A support plate 11 is fixedly surrounded above the outer circle of the homogenizing tank 1. The outer circle of the bottom of the support plate 11 is vertically supported and fixed with support feet. A plurality of support feet are arranged at equal intervals. Through the support feet, the support plate 11 and the homogenizing tank 1 are stably supported on the ground. The upper plate 2 is horizontally placed above the homogenizing tank 1. The outer circle of the lower part of the upper plate 2 is vertically supported by support rods between the support plate 11, so that the upper plate 2 is placed parallel above the homogenizing tank 1.

[0025] Electric push rods 22 are installed on both sides of the surface of the upper plate 2. The extending ends of the electric push rods 22 penetrate to the lower part of the upper plate 2, and the lifting plate 3 is fixed at the lower end of the electric push rods 22. The lifting plate 3 is driven by the electric push rods 22 to cover above the homogenizing tank 1, and the lifting plate 3 can also be driven by the electric push rods 22 to raise the height.

[0026] The main stirring rod 31 is rotatably installed at the middle position of the bottom of the lifting plate 3 through a bearing. At the middle position of the surface of the lifting plate 3 above the main stirring rod 31, a motor 33 is installed. The motor 33 is in transmission connection with the main stirring rod 31. When starting, it can drive the main stirring rod 31 to rotate in the homogenizing tank 1 for stirring. A through hole 21 is opened at the middle position of the surface of the upper plate 2. The inner diameter of the through hole 21 is larger than the outer diameter of the motor 33. When the lifting plate 3 is driven to rise to the highest position, the motor 33 is placed in the through hole 21 to avoid affecting the normal rising height of the lifting plate 3.

[0027] Auxiliary stirring rods 32 are rotatably installed at both bottoms of the lifting plate 3 on both sides of the main stirring rod 31 through bearings. A driving gear 311 is installed on the outer ring above the main stirring rod 31. At the same height above the auxiliary stirring rod 32, a driven gear 321 is installed. The driving gear 311 meshes with the driven gear 321 installed on the outer ring of the auxiliary stirring rod 32. The diameter of the driving gear 311 is smaller than the diameter of the driven gear 321. When the main stirring rod 31 rotates, it will drive the auxiliary stirring rod 32 to rotate at a slightly lower speed. The horizontal rods on the outer rings of the main stirring rod 31 and the auxiliary stirring rod 32 are staggered at different heights to achieve full and efficient stirring and homogenization of the slurry.

[0028] A ring track 34 is fixedly surrounded at the outer ring of the bottom of the lifting plate 3. A ring plate 42 is rotatably inserted inside the ring track 34. Rolling grooves 5 are opened on the upper and lower surfaces inside the ring track 34 and on the upper and lower surfaces of the ring plate 42. A plurality of balls 51 are evenly supported between the rolling grooves 5 of the ring plate 42 and the rolling grooves 5 of the ring track 34. The ring plate 42 can be smoothly guided to rotate under the action of the balls 51 rolling in the rolling grooves 5. A ring gear 4 is fixed at the bottom of the ring plate 42. The inner ring of the ring gear 4 meshes with the driven gear 321. The outer diameter of the driven gear 321 is smaller than the inner diameter of the ring gear 4. The driven gear 321 will drive the ring gear 4 to rotate at an even lower speed. Two vertical scraping blades 41 are fixed on both sides below the ring gear 4. The scraping blades 41 are in contact with the inner wall of the homogenizing tank 1 and continuously scrape the inner wall of the homogenizing tank 1 during the stirring process to scrape off the adhered slurry.

[0029] During use, both the motor 33 and the electric push rod 22 are connected to the control device and powered on. First, the electric push rod 22 drives the lifting plate 3 and its bottom structure to rise. Then, the lithium battery slurry to be homogenized is placed inside the homogenizing tank 1. Next, the electric push rod 22 is controlled again to drive the lifting plate 3 to lower and cover the top of the homogenizing tank 1. After that, the motor 33 is started, and it directly drives the main stirring rod 31 to rotate. The driving teeth 311 on its outer ring drive the driven teeth 321 to drive the secondary stirring rod 32 to rotate. The main stirring rod 31 rotates at a high speed in the middle position, while the secondary stirring rod 32 rotates at a low speed on the outside, achieving efficient stirring and homogenization of the slurry. At the same time, the rotation of the driven teeth 321 on the outer ring above the secondary stirring rod 32 acts on the inner ring of the annular gear disk 4 to drive the annular gear disk 4 to rotate. The ring plate 42 is placed in the ring track 34 and rotates by rolling in the rolling groove 5 through the balls 51, realizing the guidance of the rotation of the annular gear disk 4, so that the annular gear disk 4 drives the scraping blade 41 to rotate at a lower speed, scraping off the slurry adhering to the inner wall of the homogenizing tank 1 and continuing to be stirred. When the stirring and homogenization are completed, the electric push rod 22 is started to drive the lifting plate 3 and its underlying structure to rise, and the rotation of the motor 33 is stopped. Tools can be used to extract the homogenized slurry from the homogenizing tank 1.

Claims

1. A lithium battery slurry differential homogenization device, comprising a homogenization tank (1), an upper plate (2) and a lifting plate (3), characterized in that: A support plate (11) is fixed around the outer ring of the homogenizing tank (1), the upper plate (2) is supported and fixed above the homogenizing tank (1) and the support plate (11), electric push rods (22) are installed on both sides of the surface of the upper plate (2), the lifting plate (3) cover is placed above the homogenizing tank (1), and the ends of the electric push rods (22) are fixed on both sides of the surface of the lifting plate (3); A main stirring rod (31) is rotatably mounted at the middle of the bottom of the lifting plate (3), and the main stirring rod (31) is drivingly connected to a motor (33) mounted on the surface of the lifting plate (3) above the main stirring rod (31). Auxiliary stirring rods (32) are rotatably mounted at the bottom of the lifting plate (3) on both sides of the main stirring rod (31), and a driving tooth (311) is mounted on the upper outer ring of the main stirring rod (31), and the driving tooth (311) is meshed with a driven tooth (321) mounted on the outer ring of the auxiliary stirring rod (32), and the diameter of the driving tooth (311) is smaller than the diameter of the driven tooth (321); A ring rail (34) is fixed around the outer ring of the bottom of the lifting plate (3), a ring plate (42) is rotatably inserted inside the ring rail (34), an annular gear disk (4) is fixed at the bottom of the ring plate (42), the inner ring of the annular gear disk (4) is meshed with driven teeth (321), the outer diameter of the driven teeth (321) is smaller than the inner diameter of the annular gear disk (4), scrapers (41) are vertically fixed on both sides below the annular gear disk (4), and the scrapers (41) are in contact with the inner wall of the homogenizing tank (1).

2. A lithium battery slurry differential homogenization device according to claim 1, characterized in that: A through hole (21) is provided in the middle of the surface of the upper plate (2), and the inner diameter of the through hole (21) is larger than the outer diameter of the motor (33).

3. The lithium battery slurry differential homogenization device according to claim 1, characterized in that: The main stirring rod (31) and the auxiliary stirring rod (32) are both rotatably mounted on the bottom of the lifting plate (3) via bearings, and the bearings are embedded in the bottom surface of the lifting plate (3).

4. The lithium battery slurry differential homogenization device according to claim 1, characterized in that: The upper and lower surfaces inside the ring rail (34) and the upper and lower surfaces of the ring plate (42) are both provided with rolling grooves (5), and a plurality of balls (51) are evenly supported and arranged between the rolling grooves (5) of the ring plate (42) and the rolling grooves (5) of the ring rail (34).

5. The lithium battery slurry differential homogenization device according to claim 1, characterized in that: The bottom outer ring of the support plate (11) is vertically supported and fixed with support feet, and a plurality of support feet are arranged at equal intervals.

6. The lithium battery slurry differential homogenization device according to claim 1, characterized in that: The transverse rod bodies of the outer circles of the main stirring rod (31) and the auxiliary stirring rod (32) are staggered and distributed at different heights.

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