Slurry stirring device

Abstract

The utility model relates to a manufacturing technology of battery slurry, in particular to a slurry stirring device which comprises a tank body, the scraping plate assembly is arranged on the side wall, close to the tank body, of the inner cavity and driven by a revolution mechanism to move along the side wall of the inner cavity, and the scraping plate assembly comprises a rotating shaft and at least two scraping plates; wherein the inner side of the scraper is connected with the rotating shaft, and when the rotating shaft drives the scraper to rotate, the outer side of the scraper is close to the side wall of the inner cavity. According to the wall scraping mechanism, the scraping plate assembly is arranged in the tank body, and a plurality of scraping plates rotate and revolve in the tank body, so that the scraping plates can be in more comprehensive contact with the tank wall, battery slurry is more effectively pushed to be mixed, the cleaning efficiency of the wall scraping mechanism is improved, all components are ensured to be uniformly mixed, and the performance and the safety of a battery are ensured.

Description

Technical Field

[0001] The utility model relates to a manufacturing technology of battery slurry, in particular to a slurry stirring device. Background Art

[0002] In the lithium battery manufacturing process, the lithium battery cell slurry stirring process is to evenly disperse the positive and negative active material powders, conductive agent powders, polymer binders and additives in the solvent to form a stable suspension. In the continuous production process, the inner wall of the stirring tank will stick to the powder or suspended liquid, which will affect the stability and dispersibility of the slurry. Therefore, the inner wall must be scraped during the slurry preparation process to make the powder or suspended liquid mixed and dispersed more evenly. The current scraper assembly mostly uses a single scraper, which not only cannot cover all areas of the tank body, but also may take more time to cover the entire tank body during cleaning and stirring, resulting in poor efficiency of the scraper assembly, which in turn leads to uneven distribution of components such as active materials, conductive agents and adhesives in the slurry, affecting battery performance and stirring efficiency.

[0003] Therefore, in order to solve the technical problem of uneven stirring and distribution of battery cell slurry blocks caused by poor efficiency of the scraper assembly, it is necessary to design a slurry stirring device. Utility Model Content

[0004] In order to solve the technical problems mentioned in the background technology, the utility model provides a slurry stirring device, comprising:

[0005] Tank;

[0006] The scraper assembly is arranged on the inner cavity side wall close to the tank body and is driven by a revolution mechanism to move along the inner cavity side wall. The scraper assembly includes a rotating shaft and at least two scrapers;

[0007] The inner side of the scraper is connected to the rotating shaft. When the rotating shaft drives the scraper to rotate, the outer side of the scraper is close to the side wall of the inner cavity.

[0008] Furthermore, the scraper is a long plate-like structure, and its length direction is arranged parallel to the height direction of the tank body.

[0009] Furthermore, the scraper is connected to the rotating shaft through a plurality of scraper connecting members.

[0010] Furthermore, the surface of the scraper is coated with a Teflon coating.

[0011] Furthermore, the scraper assembly also includes a motor;

[0012] The motor is drivingly connected with the rotating shaft, and the rotating shaft penetrates and extends into the tank body from the top.

[0013] Furthermore, it also includes:

[0014] A dispersion assembly, which is close to the inner cavity side wall of the tank body;

[0015] The scraper assembly is located between the dispersion assembly and the side wall of the inner cavity, and the front end of the dispersion assembly extends downward beyond the scraper assembly.

[0016] Further, the dispersion assembly includes: a dispersion disc and a dispersion shaft;

[0017] The upper end of the dispersion shaft is connected to the top of the inner cavity of the tank body, and the lower end is connected to a plurality of dispersion disks with teeth-like edge structures, and the plurality of dispersion disks are connected up and down through the dispersion shaft.

[0018] Furthermore, the diameter of the dispersion disk is not less than 300 mm.

[0019] Furthermore, it also includes:

[0020] stirring paddle;

[0021] The stirring paddle is arranged in the tank body along the vertical direction.

[0022] Furthermore, the stirring paddle is a twisted frame paddle.

[0023] The beneficial effect of the utility model is that, by means of a scraper assembly arranged in the tank body, the scraper assembly can quickly clean the battery cell slurry blocks adhering to the tank wall through the self-rotation and revolution movements of multiple scrapers in the tank body. The simultaneous operation of multiple scrapers can increase the scraping and circulation effects on the battery cell slurry, improve the stirring efficiency of the scraping mechanism, and make the battery cell slurry on the inner wall less likely to clump and fall off, thereby ensuring that all components are evenly mixed to ensure the performance and safety of the battery.

[0024] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by practicing the utility model. The purpose and other advantages of the utility model are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1A schematic structural diagram of a slurry stirring device according to some embodiments is shown;

[0028] Figure 2 A partial enlarged view of a slurry stirring device according to some embodiments is shown;

[0029] In the figure:

[0030] 100 tank body, 101, revolution mechanism, 200 scraper assembly, 300 dispersion assembly, 400 stirring paddle, 301 dispersion disk, 302 dispersion shaft, 201 rotating shaft, 202 scraper, 203 motor, 204 scraper connecting piece. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0032] like Figure 1 and Figure 2 As shown, at least one embodiment provides a slurry stirring device, including a tank body 100; a scraper assembly 200, which is arranged on the inner cavity side wall close to the tank body 100 and is driven by a revolution mechanism 101 to move along the inner cavity side wall, and the scraper assembly 200 includes a rotating shaft 201 and at least two scrapers 202; wherein the inner side of the scraper 202 is connected to the rotating shaft 201, and when the rotating shaft drives the scraper to rotate, the outer side of the scraper is close to the inner cavity side wall. This composite motion mode combining rotation and revolution enables the scraper to better handle viscous or difficult-to-mix materials, improves the efficiency of cleaning and stirring, ensures the uniformity of the material, and reduces dead angles and wear.

[0033] In some embodiments, the scraper 202 is a long strip-shaped structure, and its length direction is parallel to the height direction of the tank body. The scraper can cover a larger area inside the tank body by adopting the long strip-shaped structure. The design of keeping the scraper parallel to the inner wall of the tank body allows the scraper to effectively remove the attachments or accumulations on the inner wall, thereby improving the efficiency of cleaning or stirring. The scraper 202 is connected to the rotating shaft 201 through a plurality of scraper connectors 204. The use of connectors between the scraper and the rotating shaft can ensure that the scraper remains stable during the rotation process, reduce the vibration and swing caused by centrifugal force or other external forces, and the connector can evenly transfer the load on the scraper to the rotating shaft to avoid local overload, thereby improving the durability and service life of the scraper and the rotating shaft. The surface of the scraper 202 is coated with a Teflon coating to improve the wear resistance and heat resistance of the scraper, not easy to deform, and protect the scraper from erosion by corrosive materials or cleaning agents.

[0034] In some embodiments, the scraper assembly further includes a motor 203; the motor 203 is in transmission connection with the rotating shaft 201, and the rotating shaft 201 extends through the top of the tank body 100. In some embodiments, the rotation of the motor can drive the scraper to rotate, and the rotation speed of the scraper can be changed by adjusting the speed of the motor, thereby achieving cleaning or stirring of the inner wall of the tank body.

[0035] The slurry stirring device further includes: a dispersion component 300, which is close to the inner cavity side wall of the tank body 100; the scraper component 200 is located between the dispersion component 300 and the inner cavity side wall, and the front end of the dispersion component 300 exceeds the scraper component 200 and extends downward.

[0036] In some embodiments, the dispersion assembly 300 includes: a dispersion disc 301 and a dispersion shaft 302; the upper end of the dispersion shaft 302 is connected to the top of the inner cavity of the tank, and the lower end is connected to multiple dispersion discs 301 with teeth-like edges, and multiple dispersion discs 301 are connected up and down through the dispersion shaft. The diameter of the dispersion disc 301 is not less than 300 mm, and the dispersion disc is used for high-speed dispersion in the slurry making process, so that the material is subjected to strong shearing and dispersion.

[0037] The slurry stirring device further includes a stirring paddle 400, which is vertically arranged in the tank 100. The stirring paddle 400 is a twisted frame paddle.

[0038] In some embodiments, the scraper assembly is driven by the revolution mechanism 101 to move along the side wall of the inner cavity. The revolution mechanism 101 can be, but not limited to, a stepper motor, and the specific driving operations are all within the scope of the prior art. This solution does not make any improvements to the above procedures. For those skilled in the art, according to the description of the revolution mechanism and the motor solution in the embodiment, relevant hardware can be selected to implement it. Therefore, the above description is a clear and achievable solution for those skilled in the art.

[0039] In summary, the utility model provides a scraper assembly in the tank body. The scraper assembly can quickly clean the battery cell slurry blocks adhering to the tank wall through the rotation and revolution of multiple scrapers in the tank body. The multiple scrapers work simultaneously, which can increase the scraping and circulation effect on the battery cell slurry, improve the stirring efficiency of the scraping mechanism, and make the battery cell slurry on the inner wall less likely to clump and fall off, thereby ensuring that all components are evenly mixed to ensure the performance and safety of the battery.

[0040] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0042] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. With the above-mentioned ideal embodiments of the utility model as inspiration, through the above-mentioned description, relevant staff can make various changes and modifications without departing from the scope of the technical idea of ​​the utility model. The technical scope of the utility model is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A slurry stirring device, characterized in that: include: Tank (100); The scraper assembly (200) is arranged on the inner cavity side wall close to the tank body (100) and is driven by a revolution mechanism to move along the inner cavity side wall. The scraper assembly (200) comprises a rotating shaft (201) and at least two scrapers (202); wherein The inner side of the scraper (202) is connected to the rotating shaft (201), and when the rotating shaft drives the scraper to rotate, the outer side of the scraper is close to the side wall of the inner cavity; The revolution mechanism is a stepping motor.

2. The slurry stirring device according to claim 1, characterized in that: The scraper (202) is a long strip-shaped structure, and its length direction is arranged parallel to the height direction of the tank body.

3. The slurry stirring device according to claim 1, characterized in that: The scraper (202) is connected to the rotating shaft (201) via a plurality of scraper connecting members (204).

4. The slurry stirring device according to claim 1, characterized in that: The surface of the scraper (202) is coated with a Teflon coating.

5. The slurry stirring device according to claim 1, characterized in that: The scraper assembly also includes a motor (203); The motor (203) is drivingly connected to the rotating shaft (201), and the rotating shaft (201) extends through the top of the tank body (100).

6. The slurry stirring device according to claim 1, characterized in that: Also includes: A dispersion assembly (300) close to the inner cavity side wall of the tank body (100); The scraper assembly (200) is located between the dispersion assembly (300) and the inner cavity side wall, and the front end of the dispersion assembly (300) extends downward beyond the scraper assembly (200).

7. The slurry stirring device according to claim 6, characterized in that: The dispersion component (300) comprises: a dispersion disk (301) and a dispersion shaft (302); The upper end of the dispersion shaft (302) is connected to the top of the inner cavity of the tank body (100), and the lower end is connected to a plurality of dispersion discs (301) whose edges are toothed structures. The plurality of dispersion discs (301) are connected up and down through the dispersion shaft.

8. The slurry stirring device according to claim 7, characterized in that: The dispersion disk (301) has a diameter of not less than 300 mm.

9. The slurry stirring device according to claim 1, characterized in that: Also includes Stirring paddle (400); The stirring paddle (400) is arranged in the tank body (100) along the vertical direction.

10. The slurry stirring device according to claim 9, characterized in that: The stirring paddle (400) is a twisted frame type paddle.

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