Lithium battery raw material mixing and stirring device

Abstract

The utility model discloses a lithium battery raw material mixing and stirring device which comprises a stirring box and a stirring mechanism, the stirring mechanism comprises a driving motor, an output shaft of the driving motor extends into the containing cavity of the stirring box, a square sleeve is fixedly arranged at one end of the output shaft, first stirring blades are fixedly arranged on one set of opposite side faces of the square sleeve, and second stirring blades are slidably connected to the other set of opposite side faces of the square sleeve. When the output shaft of the driving motor rotates, the square sleeve is driven to rotate, and then the first stirring blade and the second stirring blade are driven to rotate. Meanwhile, a second stirring blade is in sliding connection with a square sleeve, and when the square sleeve rotates, the second stirring blade moves up and down, so that the upper-layer raw material and the lower-layer raw material are mixed and stirred, the battery raw materials are stirred more sufficiently, and the problem of insufficient stirring caused by a traditional stirring tool is effectively solved; and the raw materials can be uniformly mixed in the whole stirring process, so that the quality and the performance of the lithium battery are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, in particular to a lithium battery raw material mixing and stirring device. Background Art

[0002] In the manufacture of lithium-ion battery electrodes, the positive electrode slurry is composed of a binder, a conductive agent, a positive electrode material, etc.; the negative electrode slurry is composed of a binder, graphite carbon powder, etc. The preparation of both positive and negative electrode slurries includes a series of process steps such as mixing, dissolving, and dispersing liquids and liquids and solid materials. Therefore, in the production of lithium-ion batteries, mixing and stirring lithium battery raw materials is a key step. Its main purpose is to mix the electrode materials and electrolytes to form a uniform slurry, thereby improving the dispersion and plasticity of the electrode materials. Through mixing and stirring, the electrolyte can better penetrate into the electrode, thereby improving the energy density and cycle life of the battery.

[0003] In the existing lithium battery raw material mixing and stirring device, the rotating shaft rotates to drive the stirring blade to rotate, thereby realizing the stirring blade stirring the lithium battery raw material. However, this makes the stirring blade always work on a horizontal plane, and it is impossible to effectively mix the upper layer raw material with the lower layer raw material, which will cause the raw material distribution in the whole mixture to be uneven. Therefore, a lithium battery raw material mixing and stirring device is proposed. Utility Model Content

[0004] The utility model aims to provide a lithium battery raw material mixing and stirring device to solve the technical problem that the stirring blades of the existing lithium battery raw material mixing and stirring device are all located on a horizontal plane and cannot effectively mix the upper layer raw materials and the lower layer raw materials, resulting in uneven distribution of the raw materials in the entire mixture.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A lithium battery raw material mixing and stirring device, comprising:

[0007] A mixing box, the mixing box comprising a box body and an upper cover;

[0008] The stirring mechanism includes a driving motor arranged on the upper cover, the output shaft of the driving motor extends into the accommodating cavity of the box body, a square sleeve is fixedly arranged at one end of the output shaft, a first stirring blade is fixedly arranged on a group of opposite sides of the square sleeve, and a second stirring blade is slidably connected to another group of opposite sides of the square sleeve. When the output shaft rotates, the second stirring blade rotates and moves up and down at the same time to achieve stirring of the upper and lower layers of lithium battery raw materials.

[0009] Optionally, a guide rail groove is provided on a group of opposite sides of the square sleeve, and the guide rail groove is provided with a slider, the slider can slide on the guide rail groove, and the second stirring blade is arranged on the slider.

[0010] Optionally, a threaded rod is provided on the bottom wall of the box body, the square sleeve is sleeved on the threaded rod, the slider passes through the guide rail grooves on two sides of the square sleeve, and the slider is provided with an internal threaded hole corresponding to the threaded rod.

[0011] Optionally, a groove is provided on the inner wall of one end of the square sleeve close to the driving motor, and one end of the threaded rod away from the bottom wall of the box body is inserted into the groove.

[0012] Optionally, the drive motor is a bidirectional rotating motor.

[0013] Optionally, a discharge pipe is provided on the outer peripheral surface of the box body, and a valve is provided on the discharge pipe.

[0014] Optionally, a fixing frame for fixing the driving motor and a pull rod for taking and placing the upper cover are provided on the upper cover.

[0015] Optionally, the lithium battery raw material mixing and stirring device further comprises a bracket, and the stirring box is arranged on the bracket.

[0016] Compared with the prior art, the utility model has the following beneficial effects: when stirring the lithium battery raw materials, the square sleeve is rotated by driving the motor to rotate the output shaft, thereby driving the first stirring blade and the second stirring blade to rotate. At the same time, the second stirring blade is slidably connected to the square sleeve, and when the square sleeve rotates, the second stirring blade moves up and down to achieve mixing and stirring of the upper layer raw materials and the lower layer raw materials, so that the battery raw materials are stirred more fully. Compared with the existing lithium battery raw material mixing and stirring devices, the lithium battery raw material mixing and stirring device provided by the utility model can achieve mixing and stirring of the upper layer raw materials and the lower layer raw materials, effectively solve the problem of insufficient stirring caused by traditional stirring tools, and ensure that the raw materials can be evenly mixed during the entire stirring process, thereby improving the quality and performance of lithium batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0019] Figure 1 This is a schematic diagram of the structure of the lithium battery raw material mixing and stirring device of the utility model;

[0020] Figure 2 It is a perspective view of the cross-sectional structure of the stirring mechanism of the utility model;

[0021] Figure 3 It is a partial structural schematic diagram of the stirring mechanism of the utility model.

[0022] Illustrations: 10. Bracket; 20. Mixing box; 21. Box body; 22. Upper cover; 30. Mixing mechanism; 31. Driving motor; 32. Square sleeve; 33. First mixing blade; 34. Second mixing blade; 35. Guide groove; 36. Slider; 37. Threaded rod; 38. Groove; 41. Discharge pipe; 42. Valve; 51. Fixed bracket; 52. Pull rod. DETAILED DESCRIPTION

[0023] In order to make the purpose, features and advantages of the invention of the utility model more obvious and easy to understand, the technical scheme in the embodiment of the utility model will be clearly and completely described below in combination with the drawings in the embodiment of the utility model. Obviously, the embodiment described below is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment 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.

[0024] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", 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 a limitation on the present invention. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.

[0025] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0026] Reference Figures 1 to 3 , an embodiment of the utility model provides a lithium battery raw material mixing and stirring device, comprising a bracket 10, a stirring box 20 and a stirring mechanism 30. The stirring box 20 is arranged on the bracket 10, and the stirring box 20 is used to accommodate lithium battery raw materials. Optionally, the stirring box 20 is cylindrical, and the cross-section of the inner cavity of the stirring box 20 is circular. The stirring box 20 includes a box body 21 and an upper cover 22, and the upper cover 22 is covered on the box body 21 to prevent the battery raw materials from splashing out of the stirring box 20 when stirring the lithium battery raw materials. The upper cover 22 is provided with a pull rod 52 for taking and placing the upper cover 22. A discharge pipe 41 is provided on the outer peripheral surface of the box body 21, and a valve 42 is provided on the discharge pipe 41. By opening the valve 42, the battery raw materials are discharged from the discharge pipe 41.

[0027] The stirring mechanism 30 includes a driving motor 31 disposed on the upper cover 22. Specifically, a motor mounting hole is provided on the upper cover 22, and the driving motor 31 passes through the motor mounting hole and is installed on the upper cover 22, and a fixing frame 51 is provided on the upper surface of the upper cover 22 for fixing the driving motor 31. The output shaft of the driving motor 31 extends into the accommodating cavity of the box body 21. The stirring mechanism 30 also includes a square sleeve 32 disposed in the inner cavity of the stirring box 20. One end of the square sleeve 32 is fixedly disposed on one end of the output shaft of the driving motor 31. A threaded rod 37 is fixedly disposed on the bottom wall surface of the box body 21, and the other end of the square sleeve 32 is sleeved on the threaded rod 37. When the output shaft of the driving motor 31 rotates to drive the square sleeve 32 to rotate, the square sleeve 32 rotates around the threaded rod 37. A groove 38 is provided on the inner wall of one end of the square sleeve 32 close to the driving motor 31, and one end of the threaded rod 37 away from the bottom wall of the box body 21 is inserted into the groove 38, that is, the threaded rod 37 passes through the inner cavity of the square sleeve 32, and both ends of the square sleeve 32 are sleeved on the threaded rod 37 to increase the stability of the square sleeve 32 when rotating around the threaded rod 37.

[0028] Specifically, when the output shaft of the driving motor 31 rotates, since one end of the square sleeve 32 is fixedly connected to one end of the output shaft of the driving motor 31, the square sleeve 32 can be driven to rotate by the driving motor 31; both ends of the square sleeve 32 are sleeved on the threaded rod 37, so that the square sleeve 32 and the threaded rod 37 are rotatably connected, that is, the square sleeve 32 can rotate around the threaded rod 37. The threaded rod 37 is fixed to the bottom wall of the box body 21, that is, the threaded rod 37 is fixed.

[0029] A first stirring blade 33 is fixedly provided on a group of opposite sides of the square sleeve 32, and a second stirring blade 34 is slidably connected to another group of opposite sides of the square sleeve 32. When the output shaft rotates, the first stirring blade 33 and the second stirring blade 34 rotate under the drive of the square sleeve 32, and the second stirring blade 34 moves up and down synchronously to achieve stirring of the upper and lower layers of lithium battery raw materials.

[0030] Specifically, a guide groove 35 is provided on a group of opposite sides of the square sleeve 32, and the guide grooves 35 on both sides pass through the inner cavity of the square sleeve 32. The guide groove 35 is provided with a slider 36, and the slider 36 can slide on the guide groove 35, and the slider 36 passes through the guide grooves 35 on both sides of the square sleeve 32. The slider 36 is provided with an internal threaded hole corresponding to the threaded rod 37, and the threaded rod 37 passes through the internal threaded hole. When the slider 36 rotates around the threaded rod 37, the slider 36 moves up and down on the threaded rod 37. The second stirring blade 34 is provided on the slider 36, and the second stirring blade 34 moves up and down driven by the up and down movement of the slider 36.

[0031] It should be noted that the driving motor 31 is a bidirectional rotating motor, that is, the output shaft of the driving motor 31 can periodically rotate forward and reverse, so that the slider 36 can periodically move up and down on the guide groove 35 .

[0032] The utility model discloses a lithium battery raw material mixing and stirring device, and the specific implementation method is as follows: when stirring the lithium battery raw material, the square sleeve 32 is driven to rotate by driving the motor 31, thereby driving the first stirring blade 33 and the second stirring blade 34 to rotate. At the same time, the second stirring blade 34 is slidably connected to the square sleeve 32. When the square sleeve 32 rotates, the second stirring blade 34 moves up and down to achieve mixing and stirring of the upper layer raw material and the lower layer raw material, so that the battery raw material is stirred more fully. Compared with the existing lithium battery raw material mixing and stirring device, the lithium battery raw material mixing and stirring device provided by the utility model can achieve mixing and stirring of the upper layer raw material and the lower layer raw material, effectively solve the problem of insufficient stirring caused by traditional stirring tools, and ensure that the raw materials can be evenly mixed during the entire stirring process, thereby improving the quality and performance of lithium batteries.

[0033] As described above, the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A lithium battery raw material mixing and stirring device, characterized in that: include: A mixing box (20), the mixing box (20) comprising a box body (21) and an upper cover (22); The stirring mechanism (30) comprises a driving motor (31) arranged on the upper cover (22), the output shaft of the driving motor (31) extending into the accommodating cavity of the box body (21), a square sleeve (32) being fixedly arranged at one end of the output shaft, a first stirring blade (33) being fixedly arranged on a group of opposite side surfaces of the square sleeve (32), and a second stirring blade (34) being slidably connected to another group of opposite side surfaces of the square sleeve (32), and when the output shaft rotates, the second stirring blade (34) simultaneously rotates and moves up and down, so as to achieve stirring of the upper and lower layers of lithium battery raw materials.

2. The lithium battery raw material mixing and stirring device according to claim 1, characterized in that: A guide groove (35) is provided on a group of opposite side surfaces of the square sleeve (32), and a slider (36) is provided on the guide groove (35). The slider (36) can slide on the guide groove (35), and the second stirring blade (34) is arranged on the slider (36).

3. The lithium battery raw material mixing and stirring device according to claim 2, characterized in that: A threaded rod (37) is provided on the bottom wall surface of the box body (21), the square sleeve (32) is sleeved on the threaded rod (37), the slider (36) passes through the guide rail grooves (35) on two side surfaces of the square sleeve (32), and the slider (36) is provided with an internal threaded hole corresponding to the threaded rod (37).

4. The lithium battery raw material mixing and stirring device according to claim 3, characterized in that: A groove (38) is provided on the inner wall of one end of the square sleeve (32) close to the drive motor (31), and one end of the threaded rod (37) away from the bottom wall of the box body (21) is inserted into the groove (38).

5. The lithium battery raw material mixing and stirring device according to claim 1, characterized in that: The driving motor (31) is a bidirectional rotating motor.

6. The lithium battery raw material mixing and stirring device according to claim 1, characterized in that: A discharge pipe (41) is provided on the outer peripheral surface of the box body (21), and a valve (42) is provided on the discharge pipe (41).

7. The lithium battery raw material mixing and stirring device according to claim 1, characterized in that: The upper cover (22) is provided with a fixing frame (51) for fixing the driving motor (31) and a pull rod (52) for taking and placing the upper cover (22).

8. The lithium battery raw material mixing and stirring device according to claim 1, characterized in that: It also comprises a bracket (10), and the stirring box (20) is arranged on the bracket (10).

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