Device for dispersing battery slurry

Abstract

The utility model provides a device for dispersing battery slurry, and relates to the technical field of battery manufacturing. The utility model discloses a device for dispersing battery slurry. The device comprises a rotating shaft; the dispersing disc is fixedly connected with the rotating shaft; the flow guide plate is arranged on the dispersion disc and is rotationally connected with the dispersion disc; wherein the guide plate can rotate relative to the dispersion disc, one of the guide plate and the dispersion disc is provided with a coil, the other one is provided with a magnet, and a magnetic field generated after the coil is electrified interacts with a magnetic field of the magnet to push the guide plate to deflect relative to the dispersion disc. The size of coil electrifying current is adjusted according to the rotating speed of the rotating shaft, so that the guide plate can correspondingly adjust the deflection angle of the guide plate relative to the dispersion disc according to the rotating speed of the rotating shaft, namely the stirring speed, thereby realizing dynamic guide of the flowing direction of the slurry, and facilitating the uniform distribution of the slurry on the dispersion disc; the dispersion time is shortened, and the dispersion efficiency and uniformity are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to battery manufacturing technical field, concretely relates to a device for battery slurry dispersion. BACKGROUND

[0002] Lithium ion battery is widely used in electric vehicle, energy storage device, electric aircraft, aviation and other fields. Lithium ion battery gradually receives the favor of market due to its advantages such as good safety performance, long cycle life, abundant raw material reserves and relatively small environmental pollution.

[0003] The existing lithium battery slurry is stirred by using a dispersing disc and a stirring kettle, and the stirring dispersing disc used is a single dispersing disc or multiple dispersing discs with single structure. For the slurry with large agglomerated viscosity, the stirring effect is not very good, and mostly only the stirring time can be increased to make it disperse uniformly. The slurry needs a long time to disperse uniformly in the stirring process, which is very unfavorable for large-scale production of battery cells.

[0004] At present, the dispersion device for lithium ion battery slurry is mostly simple and optimized in the shape of dispersing disc or dispersing sheet. This measure has limited improvement in improving the dispersion effect. Or the number of dispersing discs is increased. This measure has certain improvement in the dispersion of slurry, but the structure is complex, and the slurry needs to be scraped to the cylinder every time the stirring is completed, which increases the time for scraping the slurry. Therefore, a slurry dispersion device with uniform dispersion and shorter time consumption is needed to improve the production efficiency. SUMMARY

[0005] The utility model aims at the above-mentioned problems existing in prior art, and provides a device for battery slurry dispersion.

[0006] The utility model discloses the purpose can be realized through the following technical scheme: a device for battery slurry dispersion, comprising: a rotating shaft, a dispersing disc, the dispersing disc is fixedly connected with the rotating shaft, a guide plate, the guide plate is arranged on the dispersing disc and is rotatably connected with the dispersing disc, wherein the guide plate can rotate relative to the dispersing disc, and the deflection angle of the guide plate relative to the dispersing disc is changed correspondingly according to the different rotating speed of the rotating shaft.

[0007] As a further improvement of the utility model, a plurality of dispersing tables are arranged on the dispersing disc, the guide plates are arranged as a plurality of guide plates, the corresponding guide plates are arranged on each dispersing table, and the guide plates are rotatably connected with the dispersing tables.

[0008] As a further improvement of the utility model, the dispersion platform is arranged at the edge position close to the surface of the dispersion disc, the opposite surfaces of the dispersion disc are provided with dispersion platforms, the plurality of dispersion platforms are uniformly distributed along the circumference of the dispersion disc, the dispersion platform is provided with a threaded hinge, and the flow guide plate is rotationally connected with the dispersion platform through the threaded hinge.

[0009] As a further improvement of the utility model, the dispersion platform is arranged at the edge position close to the surface of the dispersion disc, the dispersion disc is provided with dispersion platforms on opposite surfaces, the plurality of dispersion platforms are uniformly distributed along the circumference of the dispersion disc, the dispersion platform is provided with a threaded hinge, and the flow guide plate is rotationally connected with the dispersion platform through the threaded hinge.

[0010] As a further improvement of the utility model, the deflection direction of the flow guide plate relative to the dispersion disc is the same as the rotation direction of the rotating shaft.

[0011] As a further improvement of the utility model, the center of the dispersion disc is provided with a slurry hole, and a supporting rod is arranged in the slurry hole in the radial direction, and the dispersion disc is connected with the rotating shaft through the supporting rod.

[0012] As a further improvement of the utility model, the first dispersion gear is sleeved on the rotating shaft, and the first dispersion gear is provided with dispersion pieces on the side surface in the circumferential direction.

[0013] As a further improvement of the utility model, the second dispersion gear is provided with dispersion pieces on the side surface in the circumferential direction, and the second dispersion gear is arranged between the first dispersion gear and the dispersion disc.

[0014] As a further improvement of the utility model, the diameter of the first dispersion gear is greater than the diameter of the second dispersion gear.

[0015] As a further improvement of the utility model, the first dispersion gear and the second dispersion gear are both arranged as two and symmetrically arranged on the opposite sides of the dispersion disc.

[0016] Based on the above technical scheme, the utility model can at least produce the following technical effects:

[0017] 1. The size of the coil current is adjusted according to the rotating speed of the rotating shaft, so that the deflection angle of the flow guide plate relative to the dispersion disc can be adjusted according to the rotating speed of the rotating shaft, that is, the stirring speed, thereby realizing dynamic guidance of the slurry flow direction, helping to improve the uniform distribution of the slurry on the dispersion disc, shortening the dispersion time, and improving the dispersion efficiency and uniformity.

[0018] 2、In the dispersion disc, a plurality of dispersion platforms are arranged, and corresponding flow guide plates are arranged on each dispersion platform, so that the plurality of flow guide plates can work cooperatively to guide the slurry to flow to the slurry hole from multiple directions, enhance the uniformity and efficiency of dispersion, and avoid the problems of local accumulation or uneven dispersion.

[0019] 3、By arranging a magnet in the dispersion platform and a magnetic core with a coil in the flow guide plate, the automatic deflection of the flow guide plate is realized by the magnetic force action between the energized coil and the magnet, so that the angle of the flow guide plate can be intelligently adjusted according to the stirring speed of the slurry, the automation degree and adaptability of the device are improved, and the flow path and dispersion effect of the slurry are further optimized.

[0020] 4、The dispersion platform is arranged at the edge position of the dispersion disc and is symmetrically distributed on both sides of the dispersion disc, so that the slurry can be effectively guided on the upper and lower surfaces of the dispersion disc, and the overall dispersion efficiency is improved.

[0021] 5、By arranging the deflection direction of the flow guide plate consistent with the rotation direction of the rotating shaft, the flow guide plate can more naturally conform to the flow direction of the slurry, reduce the flow resistance, improve the guiding efficiency and dispersion uniformity of the slurry, and avoid the flow field disorder caused by reverse deflection.

[0022] 6、By arranging a second dispersion gear with a dispersion piece between the first dispersion gear and the dispersion disc, a multi-stage dispersion structure is formed, the slurry is further refined and dispersed before the first dispersion gear, the breaking and uniform distribution effect of particles in the slurry is enhanced, and the dispersion quality is improved.

[0023] 7、The diameter of the first dispersion gear is designed to be larger than that of the second dispersion gear, so that the slurry flow speed near the first dispersion gear is faster, thereby forming a gradient flow path from the second dispersion gear to the first dispersion gear, enhancing the flowability of the slurry during the dispersion process, and improving the dispersion efficiency and uniformity. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings described below 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.

[0025] Figure 1 It is a schematic diagram of a device for dispersing battery slurry.

[0026] Figure 2 It is a front view of a device for dispersing battery slurry.

[0027] Figure 3 It is a schematic diagram of a dispersion disc and a rotating shaft.

[0028] Figure 4 is a schematic view of the dispersion platform and the flow guide plate.

[0029] Figure 5 is a schematic view of the first dispersion gear.

[0030] Figure 6 is a schematic view of the second dispersion gear.

[0031] Figure 7 is a schematic view of the magnetic core and the coil in the flow guide plate.

[0032] In the figure, 100, rotating shaft; 200, dispersion disc; 210, dispersion platform; 211, magnet; 220, slurry hole; 221, support rod; 300, flow guide plate; 310, magnetic core; 320, coil; 330, threaded hinge; 400, first dispersion gear; 410, dispersion piece; 500, second dispersion gear. DETAILED DESCRIPTION

[0033] It should be noted that the directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications also change accordingly. In addition, the descriptions such as "first", "second", "one", etc. in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited. In the present application, unless otherwise specifically defined and limited, the terms "connection", "fixation", etc. should be understood broadly, for example, "fixation" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled persons in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, the technical solutions of each embodiment of the present application can be combined with each other, but it must be based on the fact that the ordinary skilled person in the art can realize it, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the scope of protection required by the present application.

[0034] The following is a specific embodiment of the present application, and the specific embodiments of the present application are described in detail in combination with the accompanying drawings. Figures 1-7, the technical solution of the utility model is further described, but the utility model is not limited to the following embodiments.

[0035] like Figures 1 to 7 As shown, the present invention provides a device for dispersing battery slurry, including a rotating shaft 100, a dispersion plate 200, a guide plate 300, a dispersion gear and other components, which can achieve efficient and uniform dispersion of the slurry, thereby improving the production efficiency and quality of the battery slurry.

[0036] The rotating shaft 100 in the device serves as a power input component, connected to an external drive device to drive the entire dispersion device in rotation. The dispersion disc 200 is fixedly mounted on the rotating shaft 100 and rotates synchronously with the rotating shaft 100. The deflector 300 is disposed on the dispersion disc 200 and is rotatably connected thereto, allowing the deflector 300 to rotate relative to the dispersion disc 200. The deflector 300 is provided with a coil 320, and the dispersion disc is provided with a magnet 211. In other embodiments, the magnet 211 may be provided in the deflector 300 and the dispersion disc may be provided in the coil 320. When energized, the coil 320 generates a magnetic field that interacts with the magnetic field of the magnet 211, pushing the deflector 300 relative to the dispersion disc 200. In this embodiment, the current flowing through the coil 320 is adjusted based on the rotational speed of the rotating shaft 100. In other embodiments, the current flowing through the coil 320 may also be adjusted based on other conditions. The specific correspondence between the magnitude of the current flowing through the coil 320 and the rotational speed of the shaft 100 is affected by various factors, such as the slurry composition and the device size, and can be adjusted according to actual conditions, without limitation. Since the deflection angle of the guide plate 300 relative to the dispersion disk 200 is positively correlated with the magnitude of the current flowing through the coil 320, by adjusting the magnitude of the current flowing through the coil 320 according to the rotational speed of the shaft 100, the deflection angle of the guide plate 300 relative to the dispersion disk 200 can be adjusted in accordance with the rotational speed of the shaft 100, i.e., the stirring speed, thereby dynamically guiding the flow direction of the slurry, helping to improve the uniform distribution of the slurry on the dispersion disk 200, shorten the dispersion time, and improve dispersion efficiency and uniformity.

[0037] In this embodiment, a plurality of dispersion tables 210 are provided at the edge of the dispersion disk 200. The plurality of dispersion tables 210 are evenly distributed along the circumference of the dispersion disk 200. Each dispersion table 210 is rotatably connected to a guide plate 300 via a threaded hinge 330, and the guide plate 300 is rotatable relative to the dispersion table 210. In other embodiments, the guide plate 300 may be provided directly on the dispersion disk 200 without the dispersion table 210. Alternatively, multiple guide plates 300 may be provided on a single dispersion table 210.

[0038] By setting multiple dispersion platforms 210 on the dispersion disc 200 and corresponding flow guide plates 300 on each dispersion platform 210, the multiple flow guide plates 300 can work together to guide the slurry to flow towards the slurry hole 220 from multiple directions, enhancing the uniformity and efficiency of dispersion and avoiding the problems of local accumulation or uneven dispersion.

[0039] To realize automatic adjustment of the deflection angle of the flow guide plate 300, a magnet 211 is embedded in each dispersion platform 210, a magnetic core 310 is arranged inside the flow guide plate 300, and a coil 320 is wound on the magnetic core 310. In this embodiment, the magnetic core 310 is a permanent magnet, and in other embodiments, the magnetic core 310 can also be made of other magnetic materials. By controlling the system to adjust the current of the coil 320 in real time according to the rotation speed of the shaft 100, the magnetic field generated by the energized coil 320 interacts with the magnet 211 to push the flow guide plate 300 to deflect. This structure realizes dynamic adjustment of the angle of the flow guide plate 300, allowing the flow guide plate 300 to automatically adapt to different stirring speeds, optimizing the slurry flow path, and improving the dispersion efficiency and uniformity. At the same time, this system has the advantages of fast response, high adjustment precision, and strong automation, and is suitable for battery slurries of different viscosities and particle sizes.

[0040] Preferably, the deflection direction of the dispersion disc 200 is the same as the rotation direction of the shaft 100. By setting the deflection direction of the flow guide plate 300 consistent with the rotation direction of the shaft 100, the flow guide plate 300 can more naturally conform to the slurry flow direction, reducing flow resistance, improving slurry guiding efficiency and dispersion uniformity, and avoiding flow field disorder caused by reverse deflection.

[0041] Preferably, in this embodiment, a slurry hole 220 is arranged at the center of the dispersion disc 200 for vertical slurry flow to reduce dead zones. A plurality of radially arranged support rods 221 are arranged in the slurry hole 220, and in this embodiment, two support rods 221 are arranged in a cross shape and connected to the shaft 100. The dispersion disc 200 is connected to the shaft 100 through the support rods 221, which not only ensures the stability of the structure, but also facilitates the flow and circulation of the slurry in the central area.

[0042] To further improve the dispersion effect of particles in the slurry, a first dispersion gear 400 and a second dispersion gear 500 are arranged on the shaft 100, the second dispersion gear 500 is arranged axially between the dispersion disc 200 and the first dispersion gear 400, and the diameter of the first dispersion gear 400 is greater than that of the second dispersion gear 500. A plurality of dispersion pieces 410 are arranged on the side surfaces of the first dispersion gear 400 and the second dispersion gear 500 in the circumferential direction. When the shaft 100 rotates, the two dispersion gears rotate synchronously, and when the slurry passes between the two gears, it is first dispersed by the second dispersion gear 500 and then subjected to high-intensity shearing and dispersion by the first dispersion gear 400, forming a multi-stage dispersion structure.

[0043] Since the first dispersion gear 400 has a large diameter, its linear speed is higher, so that the slurry flow rate near the first dispersion gear 400 is faster, thereby forming a gradient flow path from the second dispersion gear 500 to the first dispersion gear 400, enhancing the flowability and mixing effect of the slurry during dispersion.

[0044] To further improve the dispersion efficiency, the dispersion disc 200 is provided with a dispersion table 210 on the opposite upper and lower surfaces, and the second dispersion gear 500 and the first dispersion gear 400 are correspondingly arranged, and the second dispersion gear 500 and the first dispersion gear 400 are arranged as two, symmetrically distributed on the upper and lower sides of the dispersion disc 200. This structure enables the slurry to be subjected to dispersion on the upper and lower sides of the device, improving the overall dispersion efficiency and uniformity, and is particularly suitable for high-viscosity or high-solid-content battery slurry, ensuring that the slurry reaches the ideal dispersion state in a short time.

[0045] The working process of the device is as follows: first, the external driving device drives the rotating shaft 100 to rotate, and then drives the dispersion disc 200 and the dispersion gear to rotate; then, the deflector 300 automatically adjusts the deflection angle according to the stirring speed of the slurry, guides the slurry to flow to the slurry hole 220 at the center of the dispersion disc 200, and at the same time reduces the flow resistance, improves the dispersion efficiency and uniformity; then, the slurry passes through the multi-stage dispersion structure composed of the second dispersion gear 500 and the first dispersion gear 400, and experiences the process from preliminary dispersion to high-strength shearing.

[0046] In summary, the utility model discloses a deflector 300 that can automatically adjust the deflection angle, a multi-stage dispersion gear structure and a dispersion structure symmetrically distributed on the upper and lower sides, realize the efficient and uniform dispersion of battery slurry, significantly shorten the dispersion time, improve the production efficiency, and have good industrial application prospect.

[0047] The specific embodiments described herein are merely illustrative of the spirit of the utility model. Those skilled in the art to which the utility model belongs can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the utility model or exceed the scope defined by the attached claims.

Claims

1. A device for dispersing battery slurry, characterized in that: include: Rotating shaft (100); a dispersion disc (200), wherein the dispersion disc (200) is fixedly connected to the rotating shaft (100); a guide plate (300), the guide plate (300) being disposed on the dispersion disk (200) and being rotatably connected to the dispersion disk (200); The guide plate (300) is rotatable relative to the dispersion disk (200); one of the guide plate (300) and the dispersion disk (200) is provided with a coil (320), and the other is provided with a magnet (211); when the coil (320) is energized, it generates a magnetic field that interacts with the magnetic field of the magnet (211) to push the guide plate (300) to deflect relative to the dispersion disk (200).

2. The device for dispersing battery slurry according to claim 1, characterized in that: The magnitude of the current flowing through the coil (320) is adjusted according to the rotation speed of the rotating shaft (100).

3. The device for dispersing battery slurry according to claim 1, characterized in that: A plurality of dispersion tables (210) are provided on the dispersion disk (200), the magnet (211) is provided in the dispersion table (210), a plurality of guide plates (300) are provided, a magnetic core (310) is provided in the guide plate (300), the coil (320) is wound around the magnetic core (310), each dispersion table (210) is provided with a corresponding guide plate (300), and the guide plate (300) is rotatably connected to the dispersion table (210).

4. The device for dispersing battery slurry according to claim 3, characterized in that: The dispersion table (210) is arranged at an edge position close to the surface of the dispersion disk (200), and the dispersion tables (210) are arranged on two opposite surfaces of the dispersion disk (200). A plurality of the dispersion tables (210) are evenly distributed along the circumference of the dispersion disk (200). A threaded hinge (330) is provided on the dispersion table (210), and the guide plate (300) is rotatably connected to the dispersion table (210) via the threaded hinge (330).

5. The device for dispersing battery slurry according to claim 1, characterized in that: The deflection direction of the guide plate (300) relative to the dispersion disk (200) is the same as the rotation direction of the rotating shaft (100).

6. The device for dispersing battery slurry according to claim 1, characterized in that: A slurry hole (220) is provided at the center of the dispersion disk (200), a support rod (221) is radially provided in the slurry hole (220), and the dispersion disk (200) is connected to the rotating shaft (100) via the support rod (221).

7. The device for dispersing battery slurry according to claim 1, characterized in that: The invention also comprises a first dispersing gear (400), wherein the first dispersing gear (400) is sleeved on the rotating shaft (100), and a dispersing sheet (410) is circumferentially arranged on the side surface of the first dispersing gear (400).

8. The device for dispersing battery slurry according to claim 7, characterized in that: The invention also comprises a second dispersing gear (500), a dispersing sheet (410) being circumferentially arranged on the side surface of the second dispersing gear (500), and the second dispersing gear (500) being arranged between the first dispersing gear (400) and the dispersing disk (200).

9. The device for dispersing battery slurry according to claim 8, characterized in that: The diameter of the first dispersion gear (400) is greater than the diameter of the second dispersion gear (500).

10. The device for dispersing battery slurry according to claim 8, characterized in that: The number of the first dispersing gear (400) and the number of the second dispersing gear (500) are both two, and both are symmetrically arranged on opposite sides of the dispersing disc (200).

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