Battery slurry stirrer

Abstract

The battery slurry stirring machine comprises a barrel body, a top cover is sealed at an opening of the barrel body, the top cover is connected with a planetary box, the planetary box is connected with a dispersing disc through a first rotating shaft, and a plurality of turbulent flow columns are arranged on the inner surface of the barrel body. A planetary box and a first rotating shaft in the barrel body are connected with the dispersing disc, battery slurry can be stirred, the multiple turbulent flow columns are arranged on the inner surface of the barrel body, so that the battery slurry convects and diffuses in the stirring process, the battery slurry is promoted to be mixed uniformly, the battery slurry is prevented from being accumulated on the inner wall of the barrel body, and the stirring efficiency of the battery slurry is improved. The technical problems that in the prior art, battery slurry is prone to precipitation in the homogenizing and stirring process and is adsorbed on the inner wall of equipment, homogenizing and mixing are insufficient, and the quality of a battery finished product is affected are solved.

Description

Technical Field

[0001] This application relates to the field of lithium battery production equipment, specifically to a battery slurry mixer. Background Technology

[0002] As living standards gradually improve, people have an increasing demand for batteries with high power density and high cycle stability. Among these, battery slurry preparation is a key process in battery manufacturing.

[0003] In related technologies, battery slurry is prone to sedimentation during homogenization and mixing, and it is adsorbed onto the inner wall of the equipment, resulting in insufficient homogenization and affecting the quality of the finished battery product.

[0004] Therefore, it is necessary to design a new battery slurry mixer to overcome the above problems. Utility Model Content

[0005] This application provides a battery slurry mixer, which can solve the technical problem in the related art that battery slurry is prone to sedimentation during homogenization and mixing, and adsorbs onto the inner wall of the equipment, resulting in insufficient homogenization and affecting the quality of the finished battery product.

[0006] In a first aspect, embodiments of this application provide a battery slurry mixer, which includes: a barrel body, an opening of the barrel body sealed with a top cover, the top cover connected to a planetary box, the planetary box connected to a dispersion disc via a first rotating shaft, and a plurality of turbulence columns provided on the inner surface of the barrel body.

[0007] The volume of the barrel can be set as needed. During the testing phase, the volume of the barrel can be set to 10-50L, and during the production phase, the volume of the barrel can be set to 500-600L. The planetary gearbox drives the first rotating shaft to rotate, which in turn drives the dispersion disc to rotate. The dispersion disc is used to stir the battery slurry in the barrel and to perform fine shearing and dispersion operations on the battery slurry. The turbulence columns can be set as protrusions or edges. Multiple turbulence columns can disturb the flowing battery slurry, so that the battery slurry convection and diffusion can be achieved, promote the uniform mixing of the battery slurry, prevent the battery slurry from accumulating on the inner wall of the barrel, and improve the performance and consistency of the battery slurry.

[0008] In conjunction with the first aspect, in one embodiment, a plurality of the turbulence columns are evenly distributed along the circumferential direction on the inner surface of the barrel.

[0009] The plurality of the turbulence columns can be set to two, four or more. Preferably, the plurality of the turbulence columns are set to four turbulence columns, which are evenly distributed along the circumferential direction of the inner surface of the barrel to form a stable turbulence field in a large space.

[0010] In conjunction with the first aspect, in one embodiment, the ratio of the length to the width d of each of the turbulence columns is set to 4 to 5, wherein the length direction is along the axis of the barrel.

[0011] The length-to-width ratio (d) of each of the turbulence columns can be set to 4-5, wherein the length direction of the turbulence column is along the axis of the barrel body, so that each turbulence column can fully contact the battery slurry while ensuring the effect of each turbulence column in disturbing the battery slurry. For example, the length of each turbulence column along the axis of the barrel body is set to 750 mm, the width (d) of each turbulence column is set to 170 mm, and the length-to-width ratio (d) of each turbulence column is set to 4.4, so that the turbulence column is located in the critical flow area of ​​the battery slurry without affecting the stability of the stirring.

[0012] In conjunction with the first aspect, in one embodiment, each of the turbulence-disrupting columns protrudes in an arc-shaped surface toward the center of the barrel.

[0013] The arc-shaped surface can forcibly shear, fold, and tear the substances in the flowing battery slurry, causing turbulence or eddies in the battery slurry, thereby increasing the energy loss and resistance of the battery slurry. At the same time, the arc-shaped surface disrupts the local equilibrium state of the battery slurry, making the battery slurry mix evenly. The arc-shaped surface pushes the battery slurry from the inner wall of the barrel towards the dispersion disk, effectively preventing the battery slurry from accumulating on the inner wall of the barrel.

[0014] In conjunction with the first aspect, in one embodiment, each of the turbulence-disrupting columns protrudes towards the center of the barrel to form a sharp angle.

[0015] The sharp corners can forcefully shear, fold, and tear the substances in the flowing battery slurry, causing turbulence or eddies in the slurry, thereby increasing energy loss and resistance. At the same time, the sharp corners disrupt the local equilibrium state of the battery slurry, making the slurry more uniformly mixed. The sharp corners also push the battery slurry from the inner wall of the container towards the dispersion plate, effectively preventing the battery slurry from accumulating on the inner wall of the container.

[0016] In conjunction with the first aspect, in one embodiment, the planetary box is further connected to a second rotating shaft, which is connected to a stirring paddle via a support member.

[0017] The planetary gearbox drives the second rotating shaft to rotate, which in turn drives the stirring paddle to rotate. The support member can be configured as a support rod or a support disk. The stirring paddle can be configured as a blade shape to provide a gentle stirring force, ensuring that materials in different areas can be fully mixed while avoiding damage to the molecular structure of the binder. The blades of the stirring paddle can be configured as an irregular shape and spirally wound around the support member to improve the dispersion and turbulence effect of the stirring paddle.

[0018] In conjunction with the first aspect, in one embodiment, the first rotating shaft and the second rotating shaft are arranged in parallel, and the length of the first rotating shaft is less than the length of the second rotating shaft.

[0019] The length of the first rotating shaft is less than the length of the second rotating shaft, so that the dispersion disk is close to the planetary box relative to the support member, while the dispersion disk and the support member can rotate at different heights without interfering with each other.

[0020] In conjunction with the first aspect, in one embodiment, the axis of the second rotating shaft is located at the center of the support and fixed to the support, and the end of the support is connected to the stirring paddle.

[0021] The dispersion disk can be circular, the stirring paddle is located on the outer periphery of the dispersion disk, and multiple turbulence columns are evenly distributed on the inner wall of the barrel. This causes the battery slurry flowing through the dispersion disk to disperse to the surrounding area under the action of centrifugal force, and generates initial turbulence under the action of the stirring paddle. Then, further turbulence is generated under the action of the multiple turbulence columns. The axis of the second rotating shaft passes through the center of the support member, and the stirring paddle is located at the end of the support member to optimize the stirring effect of the stirring paddle during high-speed rotation. The rotation of the support member drives the stirring paddle to rotate, thus stirring the battery slurry.

[0022] In conjunction with the first aspect, in one embodiment, the barrel body includes an upper barrel body and a lower barrel body, the upper barrel body and the lower barrel body are fixed by fasteners, the top cover is installed on the upper barrel body, and a plurality of the turbulence columns are provided on the inner surface of the lower barrel body.

[0023] The fastener can be a bolt or a clamp. When the battery slurry in the barrel needs to be stirred, the upper barrel and the lower barrel are fixed by the fastener. When the battery slurry in the barrel needs to be transferred, the upper barrel can be opened by loosening the fastener.

[0024] In conjunction with the first aspect, in one embodiment, the ratio of the length of the upper barrel along its axial direction to the length of the lower barrel along its axial direction is set to 0.9 to 1.

[0025] The ratio of the length of the upper bucket along its axis to the length of the lower bucket along its axis can be set to 0.9 to 1. For example, the length of the upper bucket along its axis is set to 875 mm, the length of the lower bucket along its axis is set to 940 mm, and the ratio of the length of the upper bucket along its axis to the length of the lower bucket along its axis is set to 0.93.

[0026] The beneficial effects of the technical solutions provided in this application include:

[0027] The dispersion disc is connected to the planetary box and the first rotating shaft inside the barrel, which can be used to stir the battery slurry. By setting multiple turbulence columns on the inner surface of the barrel, the battery slurry is convected and diffused during the stirring process, which promotes uniform mixing of the battery slurry and prevents the battery slurry from accumulating on the inner wall of the barrel. This solves the technical problem in related technologies where the battery slurry is prone to sedimentation during homogenization and agitation and is adsorbed on the inner wall of the equipment, resulting in insufficient homogenization and affecting the quality of the finished battery product. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 A side view of a battery slurry mixer provided in an embodiment of this application;

[0030] Figure 2 This is a top view of a battery slurry mixer provided in an embodiment of this application.

[0031] In the diagram: 1. Barrel body; 11. Upper barrel body; 12. Lower barrel body; 2. Top cover; 3. Planetary box; 4. First rotating shaft; 5. Dispersion disc; 6. Baffle column; 7. Second rotating shaft; 8. Support component; 9. Stirring paddle. Detailed Implementation

[0032] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0033] This application provides a battery slurry mixer, which can solve the technical problem that battery slurry is prone to sedimentation during homogenization and mixing, and adsorbs onto the inner wall of the equipment, resulting in insufficient homogenization and affecting the quality of the finished battery product.

[0034] See Figure 1 and Figure 2As shown, this application embodiment provides a battery slurry mixer, which includes: a barrel 1, a top cover 2 sealed at the opening of the barrel 1, a planetary box 3 connected to the top cover 2, a dispersion disk 5 connected to the planetary box 3 through a first rotating shaft 4, and a plurality of turbulence columns 6 provided on the inner surface of the barrel 1.

[0035] In this embodiment, the volume of the barrel 1 can be set as needed. During the testing phase, the volume of the barrel 1 can be set to 10-50L, and during the production phase, the volume of the barrel 1 can be set to 500-600L. The planetary box 3 drives the first rotating shaft 4 to rotate, which in turn drives the dispersion disk 5 to rotate. The dispersion disk 5 is used to stir the battery slurry in the barrel 1. The turbulence column 6 can be set as a protrusion or an edge. Multiple turbulence columns 6 can disturb the flowing battery slurry, so that the battery slurry convection and diffusion can be achieved, promote the uniform mixing of the battery slurry, prevent the battery slurry from accumulating on the inner wall of the barrel 1, and improve the performance and consistency of the battery slurry.

[0036] In this embodiment, the dispersion disk 5 is connected to the planetary box 3 and the first rotating shaft 4 inside the barrel 1 to stir the battery slurry. By setting multiple turbulence columns 6 on the inner surface of the barrel 1, the battery slurry is disturbed, causing convection and diffusion during the stirring process, promoting uniform mixing of the battery slurry, and preventing the battery slurry from accumulating on the inner wall of the barrel 1. This solves the technical problem in related technologies where battery slurry easily precipitates during homogenization and is adsorbed on the inner wall of the equipment, resulting in insufficient homogenization and affecting the quality of the finished battery product.

[0037] Further, see Figure 1 and Figure 2 As shown, in some embodiments, a plurality of the turbulence columns 6 are evenly distributed along the circumference of the inner surface of the barrel 1.

[0038] In this embodiment, the plurality of the turbulence-disrupting columns 6 can be set to two, four or more. Preferably, the plurality of the turbulence-disrupting columns 6 are set to four turbulence-disrupting columns 6, which are evenly distributed along the circumferential direction of the inner surface of the barrel 1 to form a stable turbulence field in a large space.

[0039] Further, see Figure 1 and Figure 2 As shown, in some embodiments, the length-to-width ratio of each of the turbulence columns 6 is set to 4 to 5, wherein the length direction is along the axis of the barrel body 1.

[0040] In this embodiment, the length-to-width ratio d of each of the turbulence columns 6 can be set to 4-5, wherein the length direction of the turbulence column 6 is along the axis of the barrel 1, so that each turbulence column 6 can fully contact the battery slurry while ensuring the effect of each turbulence column 6 in disturbing the battery slurry. Exemplarily, the length of each turbulence column 6 along the axis of the barrel 1 is set to 750 mm, the width d of each turbulence column 6 is set to 170 mm, and the length-to-width ratio d of each turbulence column 6 is set to 4.4, so that the turbulence column 6 is located in the critical flow area of ​​the battery slurry without affecting the stability of the stirring.

[0041] Further, see Figure 1 and Figure 2 As shown, in some embodiments, each of the turbulence-disrupting columns 6 protrudes in an arc shape toward the center of the barrel 1.

[0042] In this embodiment, the arc-shaped surface can forcibly shear, fold, and tear the substances in the flowing battery slurry, causing turbulence or eddies in the battery slurry, thereby increasing the energy loss and resistance of the battery slurry. At the same time, the arc-shaped surface disrupts the local equilibrium state of the battery slurry, making the battery slurry mix evenly. The arc-shaped surface pushes the battery slurry from the inner wall of the barrel 1 towards the dispersion disk 5, effectively preventing the battery slurry from accumulating on the inner wall of the barrel 1.

[0043] Further, see Figure 1 and Figure 2 As shown, in some embodiments, each of the turbulence-disrupting columns 6 protrudes towards the center of the barrel 1 to form a sharp angle.

[0044] In this embodiment, the sharp corner can forcibly shear, fold, and tear the substances in the flowing battery slurry, causing turbulence or eddies in the battery slurry, thereby increasing the energy loss and resistance of the battery slurry. At the same time, the sharp corner disrupts the local equilibrium state of the battery slurry, making the battery slurry mix evenly. The sharp corner pushes the battery slurry from the inner wall of the barrel 1 towards the dispersion disk 5, effectively preventing the battery slurry from accumulating on the inner wall of the barrel 1.

[0045] Further, see Figure 1 As shown, in some embodiments, the planetary box 3 is also connected to a second rotating shaft 7, which is connected to a stirring paddle 9 via a support member 8.

[0046] In this embodiment, the planetary box 3 drives the second rotating shaft 7 to rotate, which in turn drives the stirring paddle 9 to rotate, stirring the battery slurry and further improving the mixing uniformity of the battery slurry. The support member 8 can be configured as a support rod or a support disk, and the stirring paddle 9 can be configured as a blade shape to provide a gentle stirring force, ensuring that materials in different areas can be fully mixed, while avoiding damage to the molecular structure of the binder. The blades of the stirring paddle 9 can be configured as an irregular shape and spirally wound around the support member 8 to improve the dispersion and turbulence effect of the stirring paddle 9.

[0047] Further, see Figure 1 As shown, in some embodiments, the first rotating shaft 4 and the second rotating shaft 7 are arranged in parallel, and the length of the first rotating shaft 4 is less than the length of the second rotating shaft 7.

[0048] In this embodiment, the length of the first rotating shaft 4 is less than the length of the second rotating shaft 7, so that the dispersion disk 5 is close to the planetary box 3 relative to the support member 8, and at the same time, the dispersion disk 5 and the support member 8 can rotate at different heights without interfering with each other.

[0049] Further, see Figure 1 As shown, in some embodiments, the axis of the second rotating shaft 7 is located at the center of the support member 8 and is fixed to the support member 8, and the end of the support member 8 is connected to the stirring paddle 9.

[0050] In this embodiment, the dispersion disk 5 can be circular, the stirring paddle 9 is disposed on the outer periphery of the dispersion disk 5, and multiple turbulence columns 6 are evenly distributed on the inner wall of the barrel 1, so that the battery slurry flowing through the dispersion disk 5 is dispersed to the periphery of the dispersion disk 5 under the action of centrifugal force, and generates initial turbulence under the action of the stirring paddle 9, and then generates further turbulence under the action of multiple turbulence columns 6. The axis of the second rotating shaft 7 passes through the center of the support member 8, and the stirring paddle 9 is disposed at the end of the support member 8, so that the stirring paddle 9 has the best stirring effect during high-speed rotation. The rotation of the support member 8 drives the stirring paddle 9 to rotate, thereby stirring the battery slurry.

[0051] Further, see Figure 1 As shown, in some embodiments, the barrel 1 includes an upper barrel 11 and a lower barrel 12, the upper barrel 11 and the lower barrel 12 are fixed by fasteners, the upper barrel 11 is fitted with the top cover 2, and the inner surface of the lower barrel 12 is provided with a plurality of the baffle columns 6.

[0052] In this embodiment, the fastener can be a bolt or a clamp. When the battery slurry in the barrel 1 needs to be stirred, the upper barrel 11 and the lower barrel 12 are fixed by the fastener. When the battery slurry in the barrel 1 needs to be transferred, the upper barrel 11 can be opened by loosening the fastener.

[0053] Further, see Figure 1 As shown, in some embodiments, the ratio of the length of the upper barrel 11 along its axial direction to the length of the lower barrel 12 along its axial direction is set to 0.9 to 1.

[0054] In this embodiment, the ratio of the length of the upper bucket 11 along its axial direction to the length of the lower bucket 12 along its axial direction can be set to 0.9 to 1. Exemplarily, the length of the upper bucket 11 along its axial direction is set to 875 mm, the length of the lower bucket 12 along its axial direction is set to 940 mm, and the ratio of the length of the upper bucket 11 along its axial direction to the length of the lower bucket 12 along its axial direction is set to 0.93.

[0055] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0056] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0057] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A battery slurry agitator characterized by, It includes: The barrel (1) is sealed with a top cover (2) at the opening, the top cover (2) is connected with a planetary box (3), the planetary box (3) is connected with a dispersion disc (5) through a first rotating shaft (4), and the inner surface of the barrel (1) is provided with a plurality of turbulence columns (6).

2. The battery slurry stirrer according to claim 1, wherein The inner surface of the barrel (1) is uniformly distributed with a plurality of turbulence columns (6) along the circumferential direction thereof.

3. The battery slurry mixer of claim 1, wherein, The length to width d ratio of each turbulence column (6) is set to 4-5, wherein the length direction is along the axis direction of the barrel (1).

4. The battery slurry mixer of claim 1, wherein, Each turbulence column (6) protrudes in the direction close to the center of the barrel (1) to form an arc surface.

5. The battery slurry mixer of claim 1, wherein, Each turbulence column (6) protrudes in the direction close to the center of the barrel (1) to form a sharp corner.

6. The battery slurry mixer of claim 1, wherein, The planetary box (3) is also connected with a second rotating shaft (7), and the second rotating shaft (7) is connected with a stirring paddle (9) through a support (8).

7. The battery slurry mixer of claim 6, wherein, The first rotating shaft (4) and the second rotating shaft (7) are arranged in parallel, and the length of the first rotating shaft (4) is less than the length of the second rotating shaft (7).

8. The battery slurry mixer of claim 6, wherein, The axis of the second rotating shaft (7) is located at the center of the support (8) and is fixed with the support (8), and the end of the support (8) is connected with the stirring paddle (9).

9. The battery slurry mixer of claim 1, wherein, The barrel (1) includes an upper barrel (11) and a lower barrel (12), the upper barrel (11) and the lower barrel (12) are fixed by fasteners, the upper barrel (11) is installed with the top cover (2), and the inner surface of the lower barrel (12) is provided with a plurality of turbulence columns (6).

10. The battery slurry mixer of claim 9, wherein, The length along the axis direction of the upper barrel (11) to the length along the axis direction of the lower barrel (12) is set to 0.9-1.

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