Lithium battery solvent feeding device

Abstract

The utility model discloses a feeding device for a lithium battery solvent, and belongs to the technical field of battery electrolyte batching. Comprising a solvent tank with a feeding pipe and a feeding pipe, a driving mechanism is fixed to the top of the solvent tank, a stirring paddle is rotationally connected into the solvent tank, and a plurality of moving type stirring assemblies are arranged in the solvent tank; a driving shaft of the driving mechanism drives the stirring paddle to rotate; the shifting type stirring assembly comprises a screen plate rotating along with the driving shaft, and the screen plate moves and stirs along a track set by the driving shaft, dynamic shear force is formed on a solvent through meshes by means of vertical movement of the screen plate, and when the screen plate moves up and down, turbulent flow is formed in the process that the solvent passes through the meshes, so that the mass transfer process of the solvent can be accelerated; the mixing and stirring time is shortened, a combined flow field can be formed through linkage control of rotation and vertical movement of the screen plate, radial and axial shearing force is generated at the same time, the contact area of a solvent and a material is remarkably increased, and uniform mixing in a three-dimensional space is achieved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of battery electrolyte batching, in particular to a lithium battery solvent feeding device. BACKGROUND

[0002] A lithium ion battery is a kind of secondary battery, which mainly relies on lithium ions to move between the positive electrode and the negative electrode to work. During charging and discharging, Li+ embeds and de-embeds between the two electrodes: when charging, Li+ de-embeds from the positive electrode, embeds into the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state; when discharging, it is the opposite. As a clean energy source, electricity is increasingly widely used with the development of new energy, and the application of lithium battery, the energy storage medium of electricity, is more comprehensive in the society. During the processing of lithium batteries, the lithium battery electrolyte often needs to be batched and stirred.

[0003] The device disclosed in the patent application with the publication number "CN 220176557 U" can drive the bottom transmission gear to move by driving the motor to rotate the circular plate, so that the transmission gear is also in a rotating state during rotation, the transmission gear drives the side shaft to rotate the spiral blade, the spiral blade drives the material solution from bottom to top, the rotating shaft drives the stirring frame to rotate to stir the inside of the spiral blade, the stirring frame separates and scatters the raw materials, so that the device as a whole can convey the solution from bottom to top during stirring, and the raw materials can be quickly scattered, which can promote the rapid up-and-down rolling and mixing of the solution in the stirring tank, improve the efficiency of the overall stirring process of the device, and the electrolyte after stirring can be discharged by starting the discharge valve.

[0004] The prior art in the above has the following defects: the device can only drive the material solution from bottom to top in one direction by the spiral blade during stirring, so the solvent can only move in one direction, which results in poor rolling intensity of the solvent and low mixing efficiency.

[0005] In view of this, we propose a lithium battery solvent feeding device. CONTENT OF THE INVENTION

[0006] 1. Technical problem to be solved

[0007] The purpose of the present application is to provide a lithium battery solvent feeding device, which solves the technical problems in the above background technology and achieves the technical effect of driving the solvent in the solvent tank in both upward and downward directions, increasing the rolling intensity of the solvent and improving the mixing efficiency.

[0008] 2. Technical solution

[0009] The technical scheme of the present application provides a feeding device for lithium battery solvent, which comprises a solvent tank with a feeding pipe and a feeding pipe, a driving mechanism is fixed on the top of the solvent tank, a stirring paddle is rotatably connected in the solvent tank, and a plurality of groups of shifting stirring assemblies are arranged in the solvent tank.

[0010] The driving shaft of the driving mechanism drives the stirring paddle to rotate.

[0011] The shifting stirring assembly comprises a mesh plate rotating with the driving shaft, and the mesh plate moves along the track set on the driving shaft to stir.

[0012] As an optional scheme of the technical scheme of the present application, a plurality of annular stirring plates are fixed on the mesh plate.

[0013] As an optional scheme of the technical scheme of the present application, the mesh plate is a circular plate structure, a hexagonal sleeve is coaxially fixed on the mesh plate, a plurality of hexagonal shafts matched with the hexagonal sleeve are coaxially fixed on the driving shaft, springs are fixed between the hexagonal sleeve and the driving shaft, and the solvent tank is fixed with a motor whose output shaft is coaxially fixed with the driving shaft.

[0014] A circular ring is coaxially fixed in the solvent tank, and a plurality of annular lifting slope blocks are fixed on the circular ring.

[0015] The mesh plate comprises a flat portion.

[0016] As an optional scheme of the technical scheme of the present application, a reinforcing frame is fixed on the upper surface of the mesh plate.

[0017] As an optional scheme of the technical scheme of the present application, the mesh holes of a plurality of mesh plates are staggered.

[0018] As an optional scheme of the technical scheme of the present application, the upper lifting slope blocks are staggered with the lower lifting slope blocks.

[0019] 3. Beneficial effects

[0020] One or more technical schemes provided in the embodiments of the present application have at least the following technical effects or advantages:

[0021] 1. The vertical movement of the mesh plate through the mesh holes forms a dynamic shearing force on the solvent, and when the mesh plate moves up and down, the solvent forms a turbulent flow in the process of passing through the mesh holes, which can accelerate the mass transfer process of the solvent, shorten the mixing and stirring time, and the linkage control of the rotation and vertical movement of the mesh plate can form a composite flow field, simultaneously generating radial and axial shearing forces, significantly improving the contact area of the solvent and the material, and realizing uniform mixing in three-dimensional space.

[0022] 2. The application can accelerate the diffusion of solvent to the edge of the container by the centrifugal force generated during stirring rotation when the screen plate follows the rotation of the drive shaft, avoiding local accumulation, while enhancing the suspension ability of small particles and reducing sedimentation or stratification;

[0023] 3. The application can guide the solvent to produce complex turbulent flow through the staggered arrangement of the mesh holes of the upper and lower screen plates, thereby improving the mixing effect;

[0024] 4. The application can reduce the load during the lifting action of the drive shaft by staggered arrangement of the upper and lower lifting blocks to realize the alternating lifting of the screen plate. At the same time, the alternating rotating and lifting screen plate ensures that the solvent is always in a complex flow field stirring state. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 The overall structure of a lithium battery solvent feeding device is disclosed in a preferred embodiment of the application.

[0026] Figure 2 The overall structure of a lithium battery solvent feeding device is disclosed in a preferred embodiment of the application.

[0027] Figure 3 The overall structure of a lithium battery solvent feeding device is disclosed in a preferred embodiment of the application.

[0028] Figure 4 The overall structure of a lithium battery solvent feeding device is disclosed in a preferred embodiment of the application.

[0029] Figure 5 The overall structure of a lithium battery solvent feeding device is disclosed in a preferred embodiment of the application.

[0030] Figure legend: 10, solvent tank; 11, feeding pipe; 12, feeding pipe; 13, circular ring; 14, lifting block; 20, stirring paddle; 30, shifting stirring assembly; 31, screen plate; 311, flat part; 32, stirring plate; 33, hexagonal sleeve; 34, reinforcing frame; 40, driving mechanism; 41, drive shaft; 42, hexagonal shaft; 43, spring; 44, motor. DETAILED DESCRIPTION

[0031] The application will be further described in detail below in conjunction with the drawings.

[0032] As Figure 1 - Figure 5As shown, a kind of lithium battery solvent feeding device, including the solvent tank 10 with feeding pipe 11 and feeding pipe 12, feeding pipe 12 with valve, by the opening and closing of valve, the feeding of stirring of feeding pipe 12 is realized, feeding pipe 11 is used to add raw material solvent, the top of solvent tank 10 is fixed with driving mechanism 40, stirring paddle 20 is rotatably connected in solvent tank 10, and multiple groups of movable stirring assemblies 30 are arranged in solvent tank 10;

[0033] The driving shaft 41 of driving mechanism 40 drives the rotation of stirring paddle 20, and the driving shaft 41 is rotatably connected to the solvent tank 10 by bearing, and the rotation of stirring paddle 20 is driven by driving shaft 41 to stir the solvent in the solvent tank 10 radially;

[0034] The movable stirring assembly 30 includes the mesh plate 31 following the rotation of the driving shaft 41, and when the driving shaft 41 drives the rotation of the stirring paddle 20, the mesh plate 31 moves vertically along the track set by the driving shaft 41, and the solvent is stirred through the mesh hole of the vertically moving mesh plate 31.

[0035] The vertical movement of the mesh plate 31 forms a dynamic shear force on the solvent through the mesh hole, and when the mesh plate 31 moves up and down, a turbulent flow is formed in the process of the solvent passing through the mesh hole, which can accelerate the mass transfer process of the solvent, shorten the mixing and stirring time, and the linkage control of the rotation and vertical movement of the mesh plate 31 can form a composite flow field, and radial and axial shear forces are generated, which can significantly increase the contact area of the solvent and the material, and realize uniform mixing in three-dimensional space.

[0036] As shown in the drawings, Figure 5 The mesh plate 31 is fixed with multiple annularly distributed stirring plates 32.

[0037] When the mesh plate 31 follows the rotation of the driving shaft 41, the centrifugal force generated by the rotation of the stirring plate 32 can accelerate the diffusion of the solvent to the edge of the container, avoid local accumulation, and at the same time, enhance the suspension ability of the micro-particles, and reduce the precipitation or stratification phenomenon.

[0038] As shown in the drawings, Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 The mesh plate 31 is a circular plate structure, the mesh plate 31 is coaxially fixed with a hexagonal sleeve 33, the driving shaft 41 is coaxially fixed with multiple hexagonal shafts 42 matched with the hexagonal sleeve 33, the spring 43 is fixed between the upper end of the hexagonal sleeve 33 and the driving shaft 41, and the motor 44 is fixed with the output shaft coaxially with the driving shaft 41;

[0039] The inside of the solvent tank 10 is coaxially fixed with a circular ring 13, the outer diameter of the mesh plate 31 is matched with the outer diameter of the circular ring 13, so that the mesh plate 31 can be placed on the circular ring 13, and multiple annularly distributed lifting slope blocks 14 are fixed on the circular ring 13, and the slope surface of the lifting slope block 14 smoothly rises along the clockwise direction.

[0040] The net plate 31 comprises a flat portion 311, the outer edge of the flat portion 311 is flat, and the straight side of the flat portion 311 is longer than the length of the lifting slope block 14;

[0041] Therefore, the driving shaft 41 is driven to rotate clockwise by the motor 44 after being powered on, and the hexagonal sleeve 33 and the net plate 31 are driven to rotate clockwise under the action of the hexagonal shaft 42, and when the net plate 31 passes through the lifting slope block 14, the slope surface of the lifting slope block 14 lifts the net plate 31 in rotation, compresses the spring 43 and makes it generate an elastic rebounding force, and when the net plate 31 rotates and is separated from the lifting slope block 14 (that is, the flat portion 311 is close to but does not contact the lifting slope block 14), at this time, the net plate 31 can realize rotation and descent under the elastic rebounding force of the spring 43.

[0042] As shown in Figure 5 , the strength of the net plate 31 can be improved by fixing the reinforcing frame 34 on the upper surface of the net plate 31, so as to avoid the problem of bending deformation of the net plate 31 when the lifting slope block 14 supports the net plate 31.

[0043] As shown in Figure 2 , the mesh holes of the upper net plate 31 and the mesh holes of the lower net plate 31 are staggered, and the multidirectional flow channels formed by the staggered mesh holes can guide the solvent to produce complex turbulent flow and improve the mixing effect.

[0044] As shown in Figure 3 , the upper lifting slope block 14 and the lower lifting slope block 14 are staggered to realize the alternating lifting of the net plate 31, so as to reduce the load of the driving shaft 41 during the lifting action, and the alternating rotating and lifting net plate 31 ensures that the solvent is always in a complex flow field stirring state.

[0045] Working principle: liquid solvent is added into the solvent tank 10 through the feeding pipe 11, then the motor 44 is started, and the stirring paddle 20 is driven to rotate by the driving shaft 41, and the net plate 31 is driven to rotate clockwise by the cooperation of the hexagonal shaft 42 and the hexagonal sleeve 33, when the net plate 31 passes through the lifting slope block 14, the slope surface of the lifting slope block 14 lifts the net plate 31 in rotation, compresses the spring 43 and makes it generate an elastic rebounding force, when the net plate 31 rotates and is separated from the lifting slope block 14, the net plate 31 is lowered by the elastic rebounding of the spring 43, and in this process, the stirring paddle 32 rotates with the net plate 31 to stir the net plate.

Claims

1. A lithium battery solvent feeding device comprising a solvent tank (10) having a dosing pipe (11) and a feeding pipe (12), characterized in that: The driving mechanism (40) is fixed on the top of the solvent tank (10), the stirring paddle (20) is rotatably connected in the solvent tank (10), and the plurality of groups of the shifting stirring assemblies (30) are arranged in the solvent tank (10); The driving shaft (41) of the driving mechanism (40) drives the stirring paddle (20) to rotate; The shifting stirring assembly (30) comprises the mesh plate (31) rotating along with the driving shaft (41), and the mesh plate (31) moves the stirring along the track set on the driving shaft (41).

2. The feeding device of a solvent for lithium batteries according to claim 1, characterized in that: The mesh plate (31) is fixed with a plurality of annularly distributed stirring plates (32).

3. The feeding device of a solvent for lithium batteries according to claim 1, characterized in that: The mesh plate (31) is a circular plate structure, the mesh plate (31) is coaxially fixed with the hexagonal sleeve (33), the driving shaft (41) is coaxially fixed with a plurality of hexagonal shafts (42) matched with the hexagonal sleeve (33), the spring (43) is fixed between the hexagonal sleeve (33) and the driving shaft (41), and the solvent tank (10) is fixed with the motor (44) coaxially fixed with the driving shaft (41); The solvent tank (10) is coaxially fixed with the circular ring (13), and the circular ring (13) is fixed with a plurality of annularly distributed lifting slope blocks (14); The mesh plate (31) comprises the plane part (311).

4. The feeding device of a solvent for lithium batteries according to claim 1, characterized in that: The upper surface of the mesh plate (31) is fixed with the reinforcing frame (34).

5. The feeding device of a solvent for lithium batteries according to claim 1, characterized in that: The mesh holes of the plurality of mesh plates (31) are staggered.

6. The feed device of a solvent for lithium batteries according to claim 3, characterized in that: The upper lifting slope block (14) and the lower lifting slope block (14) are staggered.

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