Stirring tank for mixing battery materials
By using a tilted mixing tank and dispersion disc, combined with a scraper on the tank wall and an air inlet, the problem of material accumulation during battery mixing is solved, resulting in a more uniform mixing effect.
Patent Information
- Application Number
- CN202520280747.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-20
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-02-20
AI Technical Summary
In existing technologies, material accumulation occurs during the mixing process of battery materials, leading to uneven mixing.
The inclined mixing tank and dispersing disc, combined with the tank wall scraper and movable air inlet, ensure that the material moves under the action of gravity by controlling the difference in the rotation speed of the mixing tank and the dispersing disc as well as the tilt angle of the bottom of the tank, thus avoiding accumulation and improving the uniformity of mixing.
It effectively avoids material accumulation, improves mixing effect and uniformity, and reduces dispersion time.
Smart Images
Figure CN223846778U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of stirring tank for mixing battery material. BACKGROUND
[0002] The production of battery includes the preparation of positive and negative active material layer, including using stirring tank to mix material (active material, polymer binder, conductive agent etc.), there is the problem of material accumulation in the current mixing process, and the material in the accumulated area is difficult to circulate, and it is not easy to mix uniformly. SUMMARY
[0003] In view of the problems in the related art, the utility model aims to provide a stirring tank for mixing battery material, which at least improves the uniformity of mixing.
[0004] To achieve the above object, the utility model provides a kind of stirring tank for mixing battery material, comprising: stirring barrel, around the first rotation axis rotation, stirring barrel includes cylinder bottom and the cylinder wall connected in the circumferential side of cylinder bottom;Dispersion disc, it is set in stirring barrel, and around the second rotation axis rotation;Cylinder wall scraper, it is set in stirring barrel, for scraping battery material on cylinder wall, cylinder bottom includes the first area between dispersion disc and scraper, and the second area opposite to the first area about the first rotation axis, in the working process of the stirring tank, at least part of time first area is higher than the second area along gravity direction.
[0005] In some embodiments, the angle between the cylinder bottom and the horizontal plane is greater than 0° and less than or equal to 45°, or varies within a range of greater than or equal to 0° and less than or equal to 45°, and the horizontal plane is perpendicular to the direction of gravity.
[0006] In some embodiments, the cylinder wall, the first rotation axis and the second rotation axis are perpendicular to the cylinder bottom.
[0007] In some embodiments, the second rotation axis is parallel to the direction of gravity, and the cylinder wall, the first rotation axis and the cylinder bottom are perpendicular.
[0008] In some embodiments, the cylinder wall, the first rotation axis, the second rotation axis and the direction of gravity are parallel.
[0009] In some embodiments, the stirring tank further comprises: a turning platform carrying the stirring barrel, the dispersion disc and the cylinder wall scraper and driving the stirring barrel, the dispersion disc and the cylinder wall scraper to turn, so that the angle between the cylinder bottom and the horizontal plane varies within a range of greater than or equal to 0° and less than or equal to 45°.
[0010] In some embodiments, the stirring tank further comprises: a blowing pipeline, and the blowing port of the blowing pipeline is movably arranged above the cylinder bottom.
[0011] In some embodiments, the diameter of the blowhole ranges from 1mm to 50mm, and the blowhole speed ranges from 1m / s to 30m / s.
[0012] In some embodiments, the rotation speed of the dispersion disc is greater than the rotation speed of the stirring barrel.
[0013] In some embodiments, the stirring tank is used in a dry mixing process.
[0014] The beneficial technical effects of the present application are as follows:
[0015] In the embodiments of the present application, the bottom of the barrel includes a first region between the dispersion disc and the barrel wall scraper, and a second region opposite the first region about the first rotation axis, and at least part of the time, the first region is higher than the second region in the direction of gravity, so that the first region where the material is easy to accumulate becomes a high point, which will move to the low point under the action of gravity, avoiding the accumulation of material in the first region, improving the dispersion effect and mixing uniformity of the material, and reducing the dispersion time. BRIEF DESCRIPTION OF DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.
[0017] Figure 1 And Figure 2 The prior art stirring tank is shown, Figure 2 Each component is drawn as transparent to show the blocked structure.
[0018] Figure 3 The simulation result when only the dispersion disc rotates is shown.
[0019] Figure 4 The simulation result when only the stirring barrel rotates is shown.
[0020] Figure 5 The simulation result when the dispersion disc and the stirring barrel both rotate is shown.
[0021] Figure 6 A perspective view of a stirring tank for mixing battery material according to the first embodiment of the present application is shown.
[0022] Figure 7 A perspective view of a stirring tank for mixing battery material according to the second embodiment of the present application is shown.
[0023] Figure 8A perspective view of a mixing tank for mixing battery material according to a third embodiment of the present application is shown.
[0024] Figures 9 to 11 A perspective view of a mixing tank for mixing battery material according to a fourth embodiment of the present application in different states is shown.
[0025] Figure 12 A perspective view of a mixing tank for mixing battery material according to a fifth embodiment of the present application is shown. DETAILED DESCRIPTION
[0026] For a better understanding of the spirit of the embodiments of the present application, the following further describes the same in conjunction with some preferred embodiments of the present application.
[0027] Embodiments of the present application will be described in detail below. Throughout the specification, the same or similar components and components having the same or similar functions are denoted by like reference numerals. The embodiments described herein with reference to the accompanying drawings are illustrative in nature, diagrammatic in nature, and serve to provide a basic understanding of the present application. The embodiments of the present application should not be construed as limiting the present application.
[0028] As used herein, the terms "approximately," "substantially," "about," and "generally" are used to describe and account for small variations. When used in connection with an event or circumstance, the terms can refer to instances in which the event or circumstance occurs exactly, as well as instances in which the event or circumstance occurs with a minor approximation.
[0029] In this specification, relative terms such as "central," "longitudinal," "lateral," "forward," "rearward," "rightward," "leftward," "internal," "external," "lower," "higher," "horizontal," "vertical," "above," "below," "top," "bottom," and derivatives thereof (e.g., "horizontally," "downwardly," "upwardly," etc.) should be construed to refer to the orientation as then described or as shown in the drawing under discussion. These relative terms are for convenience of description only and do not require that the application be practiced with the particular orientation described or shown.
[0030] For ease of description, "first," "second," "third," etc. can be used herein to distinguish between different components of a figure or series of figures. The "first," "second," "third," etc. are not intended to describe the corresponding components.
[0031] Figure 1 and Figure 2 A prior art mixing tank 1 is shown, comprising a mixing bowl 2, a dispersing disc 3, a cylinder wall scraper 4 and a bottom scraper 5, Figure 2The components are drawn transparent to show the obstructed structures. Figure 3 The simulation result is shown when only the dispersing disc rotates. It can be seen that the material 6 accumulates at the periphery of the dispersing disc. Figure 4 The simulation result is shown when only the stirring barrel 2 rotates. It can be seen that the material 6 accumulates at the edge of the scraping plate (the cylinder wall scraper 4). Figure 5 The simulation result is shown when both the dispersing disc 3 and the stirring barrel 2 rotate. It can be seen that the material 6 accumulates most seriously between the dispersing disc 3 and the scraping plate 4 (for example, the part indicated by the arrow A).
[0032] Figure 6 A perspective view of the stirring tank 100 for mixing battery material according to the first embodiment of the present application is shown. Figure 7 A perspective view of the stirring tank 100 for mixing battery material according to the second embodiment of the present application is shown. Figure 8 A perspective view of the stirring tank 100 for mixing battery material according to the third embodiment of the present application is shown. Figures 9 to 11 A perspective view of the stirring tank 100 for mixing battery material according to the fourth embodiment of the present application is shown. Figure 12 A perspective view of the stirring tank 100 for mixing battery material according to the fifth embodiment of the present application is shown. Figures 6 to 12 The components are drawn transparent to show the obstructed structures.
[0033] In the first to fifth embodiments, the stirring tank 100 is used for a dry mixing process (including dry mixing of active materials, conductive agents, and adhesives, etc.; adding an appropriate amount of solvent to wet; adding solvent to disperse and break; dilution to adjust viscosity), and the stirring tank 100 includes a stirring barrel 10, a dispersing disc 20, a cylinder wall scraper 30, and a cylinder bottom scraper (not shown). The stirring barrel 10 rotates around a first rotation axis 12, and includes a cylinder bottom 16 and a cylinder wall 14 connected to the periphery of the cylinder bottom 16. The dispersing disc 20 is arranged in the stirring barrel 10 and rotates around a second rotation axis 22. The rotation speed of the dispersing disc 20 is greater than that of the stirring barrel 10. The stirring barrel 10 rotates slowly, and the dispersing disc 20 rotates at high speed to break the material as much as possible and improve the uniformity of mixing. The cylinder wall scraper 30 is arranged in the stirring barrel 10 to scrape the battery material on the cylinder wall 14.
[0034] In the first to fourth embodiments, the cylinder bottom 16 includes a first region 161 between the dispersing disc 20 and the cylinder wall scraper 30, and a second region 162 opposite the first region 161 with respect to the first rotation axis 12. At least part of the time, the first region 161 is higher than the second region 162 in the direction of gravity g, so that the first region 161, where the material is prone to accumulate, becomes a high point during the operation of the stirring tank 100, and moves to a low point (for example, the second region 162 is at the low point) under the action of gravity (for example,Figure 6 The material moving direction d) is shown to avoid the material accumulation in the first area 161, improve the dispersion effect and mixing uniformity of the material, and reduce the dispersion time.
[0035] In the first to fourth embodiments, the angle between the cylinder bottom 16 and the horizontal plane is greater than 0° and less than or equal to 45°, or varies in the range of greater than or equal to 0° and less than or equal to 45°, and the horizontal plane is perpendicular to the direction of gravity g. The embodiments of the present application make the first area 161 where the material is easy to accumulate become a high point by tilting the cylinder bottom 16 at least at some time, so that the material moves to a low point to reduce the accumulation.
[0036] In the first embodiment, please refer to Figure 6 , the angle between the cylinder bottom 16 and the horizontal plane is greater than 0° and less than or equal to 45°, and the cylinder wall 14, the first rotating shaft 12 and the second rotating shaft 22 are perpendicular to the cylinder bottom 16, that is, the angle between the cylinder wall 14, the first rotating shaft 12 and the second rotating shaft 22 and the direction of gravity g is greater than 0° and less than or equal to 45°. During the working process of the stirring tank 100, the positions of the dispersion disc 22 and the cylinder wall scraper 30 do not change. The first embodiment changes the whole stirring tank 100 from flat to inclined placement, and the stirring barrel 10, the dispersion disc 20 and the cylinder wall scraper 30 are inclined at the same time. After the inclination, the first area 161 where the material is easy to accumulate becomes a high point, and the material falls downward under the action of gravity to avoid accumulation in the first area 161, improve the dispersion effect, and reduce the dispersion time.
[0037] In the second embodiment, please refer to Figure 7 , the second rotating shaft 22 is parallel to the direction of gravity g, and the cylinder wall 14 and the first rotating shaft 12 are perpendicular to the cylinder bottom 16, that is, the angle between the cylinder wall 14 and the first rotating shaft 12 and the direction of gravity g is greater than 0° and less than or equal to 45°. The second embodiment changes the stirring barrel 10 from flat to inclined placement, and the cylinder wall scraper 30 is inclined at the same time. The dispersion disc 20 still remains vertical, and the second rotating shaft 22 of the dispersion disc 20 and the first rotating shaft 12 of the stirring barrel 10 have a certain angle (greater than 0° and less than or equal to 45°). In this way, not only the first area 161 where the material is easy to accumulate becomes a high point, but also moves downward under the action of gravity. While the dispersion disc 20 rotates, the dispersion disc linear velocity component v also brings the material horizontal direction velocity component vx(parallel to the cylinder bottom 16) and vertical direction velocity component vy(perpendicular to the cylinder bottom 16) at the same time, wherein the vertical direction velocity component vyaccelerates the mixing effect of the powder (material) in the vertical direction, which is difficult to achieve in the mixing tank of the prior art.
[0038] In the third embodiment, please refer to Figure 8, the cylinder wall 14, the first rotating shaft 12, the second rotating shaft 22 and the direction of gravity g are parallel. In the third embodiment, the cylinder wall, the dispersion disc 20 and the cylinder wall scraper 30 are all placed vertically, and the cylinder bottom is changed into an inclined plane, so that the first area 161 where the material is prone to accumulate is undulating, and when the first area 161 changes between the high point and the low point, the material moves from the high point to the low point under the action of gravity, reducing the accumulation effect.
[0039] The fourth embodiment is optimized on the basis of the first embodiment, and the stirring tank 100 further comprises a turning platform 40, which carries and turns the stirring barrel 10, the dispersion disc 20 and the cylinder wall scraper 30, so that the angle between the cylinder bottom 16 and the horizontal plane changes within a range of greater than or equal to 0° and less than or equal to 45°. In the fourth embodiment, the stirring barrel 10, the dispersion disc 20, the cylinder wall scraper 30 and the auxiliary structure are placed on the turning platform 40 as a whole, Figure 10 The state when the turning platform 40 is placed horizontally is shown, and the turning platform 40 is below a turnable main shaft 42, which can be turned within a range of 45° to the left (as shown by the arrow Figure 11 and 45° to the right (as shown by the arrow Figure 9 The total turning range is 90°. The fourth embodiment includes two technical optimizations: the characteristics of different materials are different, resulting in different heights and positions of accumulation, and the turning platform can be adjusted in time according to the characteristics of the material to adjust the turning angle, so that the material accumulation position is always at a higher point inside the stirring barrel 10, thereby ensuring the effect of eliminating material accumulation; after stirring for a few minutes, the turning direction of the turning platform 40 can be changed, so that the material is displaced in the vertical direction, so that its position in the vertical direction changes, thereby enhancing the mixing effect of the material in the vertical direction.
[0040] In the fifth embodiment, the stirring tank 100 further comprises a blowing pipe, and a blowing port 50 of the blowing pipe is movably arranged above the cylinder bottom 16. The fifth embodiment sets the blowing port 50 above the material accumulation point, the diameter of the blowing port 50 ranges from 1 mm to 50 mm, and the blowing speed of the blowing port 50 ranges from 1 m / s to 30 m / s, so that the material at the accumulation point can be directly blown away, reducing material accumulation and enhancing the mixing effect; the position and orientation of the blowing port 50 are not fixed, and can be adjusted according to the actual material accumulation position and characteristics, and the blowing pipe is arranged as a movable pipe. Figure 12 The fifth embodiment of the stirring tank 100 is shown as being placed horizontally, but the embodiments of the present application are not limited thereto, and the fifth embodiment can be implemented on the basis of the first to fourth embodiments, i.e., the blowing pipe is further arranged on the basis of the inclined cylinder bottom 16 of the stirring barrel 10, further improving the uniformity of the mixture.
[0041] The embodiments of the present application solve the material accumulation problem during dry mixing by tilting the barrel bottom 16 of the stirring barrel 10 (optionally, simultaneously tilting the barrel wall 14 and the barrel wall scraper, the dispersing disc 20), and by setting the air blowing port 50 above the point where the material is prone to accumulate, thereby improving the uniformity of the mixing.
[0042] The above is only the preferred embodiment of the present application, and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A stirred tank for mixing battery material, characterized by, Comprising: a stirring bucket rotating around a first rotation axis, the stirring bucket comprising a bucket bottom and a bucket wall connected to the bucket bottom; a dispersing disc arranged in the stirring bucket and rotating around a second rotation axis; a bucket wall scraper arranged in the stirring bucket for scraping the battery material on the bucket wall, the bucket bottom comprising a first area between the dispersing disc and the bucket wall scraper and a second area opposite to the first area with respect to the first rotation axis, the first area being higher than the second area along the direction of gravity at least at some time during the operation of the stirring tank.
2. The stirring tank for mixing battery material according to claim 1, wherein an angle between the bucket bottom and a horizontal plane is greater than 0° and less than or equal to 45°, or varies in a range of greater than or equal to 0° and less than or equal to 45°, the horizontal plane being perpendicular to the direction of gravity.
3. The stirring tank for mixing battery material according to claim 2, wherein the bucket wall, the first rotation axis and the second rotation axis are perpendicular to the bucket bottom.
4. The stirring tank for mixing battery material according to claim 2, wherein the second rotation axis is parallel to the direction of gravity, and the bucket wall, the first rotation axis and the bucket bottom are perpendicular.
5. The stirring tank for mixing battery material according to claim 2, wherein the bucket wall, the first rotation axis, the second rotation axis and the direction of gravity are parallel.
6. The mixing tank for mixing battery material according to claim 2, wherein Further comprising: a turning platform carrying and turning the stirring bucket, the dispersing disc and the bucket wall scraper, so that the angle between the bucket bottom and a horizontal plane varies in a range of greater than or equal to 0° and less than or equal to 45°.
7. The mixing tank for mixing battery material according to claim 1, wherein Further comprising: a blowing pipe, a blowing port of the blowing pipe being movably arranged above the bucket bottom.
8. The stirring tank for mixing battery material according to claim 7, wherein a diameter of the blowing port ranges from 1 mm to 50 mm, and a blowing speed of the blowing port ranges from 1 m / s to 30 m / s.
9. The stirring tank for mixing battery material according to claim 1, wherein a rotation speed of the dispersing disc is greater than a rotation speed of the stirring bucket.
10. The stirring tank for mixing battery material according to claim 1, wherein the stirring tank is used in a dry mixing process.