Lithium battery material feeding device, feeding mechanism and homogenizing system

Abstract

The embodiment of the utility model provides a lithium battery material supply device, a supply mechanism and a homogenizing system. The lithium battery material feeding device comprises a rotation driving device, a feeding device and a discharging device, the magnetic attraction part is connected to a rotating shaft of the rotary driving device, and a magnetic attraction surface used for capturing magnetic substances in the powder is arranged on the periphery of the magnetic attraction part; and the scraping plate is connected to a rotating shaft of the rotary driving device and is used for scraping powder particles on the screen. According to the lithium battery material feeding device, active magnetic attraction and dynamic scraping modes are adopted, the demagnetizing effect and the blanking anti-blocking effect can be remarkably improved, the feeding efficiency is improved, the lithium battery performance is improved, and the production cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage equipment, and in particular to a lithium battery material feeding device, a feeding mechanism, and a homogenizing system. Background Art

[0002] Homogenization is the first step in lithium battery production, and its accuracy will directly affect the quality of lithium batteries. The feeding accuracy will affect the homogenization accuracy, and thus affect the slurry quality.

[0003] At present, the feeding devices on the market mainly use gravity feeding and vacuum negative pressure feeding to feed. When the feeding equipment is working, it uses multiple parallel magnetic rods in the trough to absorb the magnetic material in the powder, statically filters out foreign matter in the powder through the screen at the bottom of the trough, and shakes off the powder through the vibrating screen to accelerate the feeding, thereby realizing feeding.

[0004] However, the demagnetization solution of multiple magnetic rods connected in parallel in the feeding device has poor demagnetization effect and is costly. The static filtration of a gauze with a certain mesh size is inefficient at the feeding port. When the powder agglomerates to form larger particles, the mesh holes will be blocked, causing blockage. Utility Model Content

[0005] The embodiments of the present application provide a lithium battery material feeding device, a feeding mechanism, and a slurry system, which can significantly improve the effect of preventing falling materials from blocking, increase feeding efficiency, improve lithium battery performance, and reduce production costs.

[0006] In a first aspect, an embodiment of the present application provides a lithium battery material feeding device, comprising:

[0007] A rotary drive device including a rotary shaft;

[0008] A magnetic member connected to the rotating shaft of the rotary drive device, wherein the outer periphery of the magnetic member is provided with a magnetic surface for capturing magnetic substances in the powder;

[0009] The scraper is connected to the rotating shaft of the rotary drive device and is used to scrape off the powder particles on the screen.

[0010] In a possible implementation, the magnetic attraction component includes:

[0011] A first ring, mounted on and fixedly connected to the rotating shaft;

[0012] A magnetic rod having a magnetic surface on its periphery for capturing magnetic substances in the powder;

[0013] A first fastener connects the magnetic rod and the first ring.

[0014] In a possible embodiment, the magnetic surface includes two convex contour surfaces provided in the middle, two rounded contour surfaces provided at the left and right ends of the convex contour surface, and four connecting contour surfaces respectively connecting the two convex contour surfaces and the two rounded contour surfaces on both sides;

[0015] It also includes an end surface arranged at the free end of the magnetic rod.

[0016] In a possible implementation, the magnetic attraction surface is symmetrically arranged relative to a central cross section of the magnetic rod.

[0017] In a possible implementation, the angle between the tangent lines on both sides of the rounded contour surface is 30° to 60°.

[0018] In a possible implementation, the rotating shaft is connected to a plurality of magnetic rods, at least two of the magnetic rods are circumferentially distributed along the same depth of the rotating shaft, and at least two of the magnetic rods are axially distributed along different depths of the rotating shaft.

[0019] In one possible implementation, the scraper includes a second ring, a base plate, and a scraper;

[0020] The second sleeve is sleeved on the rotating shaft; the base plate is fixedly connected to the outer periphery of the second sleeve, a mounting groove is provided at the lower part of the base plate, and the scraper is fixed in the mounting groove.

[0021] In a possible implementation, the base plate is distributed obliquely relative to a central longitudinal section of the second ring, and an angle between a central plane of the base plate and the central longitudinal section ranges from 5° to 45°.

[0022] In a second aspect, the present application further provides a feeding mechanism, comprising a barrel and any one of the above-mentioned lithium battery material feeding devices;

[0023] The lithium battery material feeding device is installed in the barrel and is used to stir the material in the inner cavity of the barrel.

[0024] In a third aspect, the present application further provides a homogenization system, comprising a homogenization mechanism and any one of the feeding mechanisms described above, wherein the feeding mechanism is used to feed the homogenization mechanism.

[0025] The lithium battery material feeding device, feeding mechanism, and homogenization system provided in the embodiments of the present application adopt active demagnetization and dynamic scraping methods. When feeding, the rotating drive device drives the demagnetization part and the scraper to rotate stably around the rotating axis. During rotation, the magnetic surface on the periphery of the magnetic part dynamically absorbs the magnetic substance in the powder. At the same time, the scraper dynamically scrapes off the powder particles attached to the screen, which can avoid blockage during the feeding process and improve the accuracy of the blanking. In addition, by adjusting the speed of the rotating drive device, the movement frequency of the magnetic part and the scraping frequency of the scraper can be adjusted. Compared with traditional static demagnetization and static filtration solutions, the active demagnetization and scraping solution in the present application has better impurity removal effect and better blanking anti-blocking effect, which can effectively improve production efficiency and save production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0027] Figure 1 A schematic diagram of a lithium battery material feeding device provided in a specific embodiment of the present application;

[0028] Figure 2 This is a schematic diagram of the assembly of the rotary drive device and the magnetic attraction member provided in a specific embodiment of the present application;

[0029] Figure 3 A schematic cross-sectional view of a magnetic rod in a magnetic attraction member provided in a specific embodiment of the present application;

[0030] Figure 4 A schematic structural diagram of a scraper provided in a specific embodiment of the present application;

[0031] Figure 5 for Figure 4 Schematic diagram of the cross section of the middle scraper;

[0032] Figure 6 This is a cross-sectional view of the feeding mechanism provided in a specific embodiment of the present application.

[0033] Among them, 1-feeding mechanism;

[0034] 10-Lithium battery material feeding device;

[0035] 11-rotation drive device; 111-driving end;

[0036] 12-magnetic element; 121-first ring; 122-magnetic rod; 123-magnetic surface; 124-first fastener; 1231-rounded contour surface; 1232-connecting contour surface; 1233-convex contour surface; 1234-end surface;

[0037] 13-scraper; 131-second ring; 132-base plate; 133-scraper; 1321-mounting groove;

[0038] 14-rotation axis;

[0039] 15- sieve;

[0040] 20-barrel; 201-feed port; 202-discharge port; 203-inner cavity.

[0041] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0042] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0043] This application is based on the technical defects of the static demagnetization and scraping scheme currently used in the feeding station, which results in long feeding time, low feeding efficiency, poor feeding accuracy, low production efficiency, inability to adapt to the automated production environment and limited application scope. A lithium battery material feeding device is proposed, which drives the magnetic suction part to rotate by a rotary drive device. While stirring the powder, the contact area between the magnetic suction part and the powder is increased, thereby actively capturing and adsorbing the magnetic impurities in the powder. The contact between the magnetic suction part and the powder is more complete, the impurity removal effect is better, the feeding accuracy can be improved, smooth discharge is ensured, and blockage is prevented. At the same time, the scraper is driven to move by the rotary drive device to dynamically stir and crush the clumps attached to the surface of the gauze, thereby further preventing material blockage and improving the feeding efficiency.

[0044] The following specific embodiments describe in detail the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0045] Please refer to Figure 1 and Figure 2 The lithium battery material feeding device provided in this application mainly includes a rotary drive device 11 , a magnetic attraction member 12 and a scraper 13 .

[0046] The rotary drive device 11 provides a rotational driving force to the magnetic member 12 and the scraper 13, causing them to rotate about the rotation axis of the rotary drive device 11. The rotary drive device 11 includes a rotary shaft 14, and the magnetic member 12 is connected to the rotary shaft 14 of the rotary drive device 11. The magnetic member 12 is provided with a magnetic surface 123 on its outer periphery. The magnetic surface 123 is magnetic. The magnetic member 12 can stir the powder under the rotation drive of the rotary drive device 11, and utilize the magnetic properties of the magnetic surface 123 to attract magnetic substances in the powder, thereby attracting the magnetic substances to the magnetic surface 123 of the magnetic member 12.

[0047] The fixed end of the magnetic element 12 can be directly fixedly mounted on the rotating shaft 14 through a locking member. The rotating shaft 14 is coaxially connected to the driving end 111 of the rotating drive device 11 through a coupling. It can also be fixedly connected to the rotating shaft 14 through a connecting member and a locking member to achieve synchronous or asynchronous rotation.

[0048] Specifically, the magnetic element 12 integrally extends from its fixed end to the non-fixed end. The magnetic element 12, mounted on the rotating shaft 14, is generally perpendicular to the rotation axis. The rotating magnetic element 12 rotates around the central rotation axis and moves generally on the same circumferential surface. The magnetic surface 123 on the outer periphery of the rotating magnetic element 12 captures and absorbs magnetic impurities in the powder, thereby adsorbing the magnetic impurities on the outer periphery of the magnetic element 12, thereby removing the magnetic impurities in the powder and improving the purity of the feed. In addition, this rotary impurity removal solution does not occupy blanking space and can prevent material accumulation above the magnetic element 12, effectively preventing material blockage.

[0049] The scraper 13 can be but is not limited to a plate-like structure. For example, it can also be strip-shaped, rod-shaped, etc. The fixed end of the scraper 13 is connected to the rotating shaft 14, and its non-fixed end extends radially from the fixed end to the rotating plane to form a scraping structure that rotates around the rotation axis of the rotating drive device 11.

[0050] In order to ensure the scraping effect, the scraper 13 can be set close to the surface of the screen 15, so that the scraper 13 is close to the screen 15 under the rotating motion, and the agglomerated powder particles attached to the surface of the screen 15 are crushed, so that the crushed powder falls from the mesh of the screen 15, preventing the powder particles from accumulating on the surface of the screen 15.

[0051] Under rotational drive, the scraper 13 and the magnetic element 12 can move synchronously or asynchronously. The two can be connected as one body or separately. For example, they can be independently installed on the rotating shaft 14. The two can be distributed vertically and / or circumferentially.

[0052] Regarding the arrangement of the magnetic element 12 and scraper 13, in a first embodiment, the magnetic element 12 is positioned above the scraper 13, coaxially spaced and spaced a certain distance apart to prevent interference between the magnetic element 12 and the scraper 13 during their magnetic attraction and scraping operations. The scraper 13 is positioned above and near the screen 15 to ensure that any powder adhering to the screen 15 is scraped off.

[0053] Optionally, the scraper 13 is arranged directly below the magnetic component 12, that is, the scraper 13 is located in the orthographic projection plane of the magnetic component 12 projected directly downward, and the two perform demagnetization and scraping work synchronously during rotation to ensure that the powder in the demagnetization area is stirred and crushed at the same time, thereby ensuring the synchronization of demagnetization, stirring and powder particle crushing operations and improving anti-blocking efficiency and anti-blocking effect.

[0054] Regarding the distribution structure of the magnetic element 12 and the scraper 13, in the second specific embodiment, the magnetic element 12 and the scraper 13 are coaxially distributed and circumferentially distributed in different planes. The magnetic element 12 can be optionally arranged in front of the scraper 13 along the rotation direction. Such an arrangement allows the powder to be free of magnetic impurities first, and then the clean area is stirred and blanked, which can avoid the scraper 13 interfering with the demagnetization operation and improve the demagnetization efficiency.

[0055] Regarding the distribution structure of the magnetic member 12 and the scraper 13, in the third specific embodiment, the scraper 13 can be integrated on the magnetic member 12. Specifically, the magnetic member 12 is connected to the rotating shaft 14, and the scraper 13 is fixedly arranged at the bottom of the magnetic member 12. While removing impurities from the powder, it simultaneously stirs and scrapes the material, and the layout is more compact and saves more space.

[0056] The lithium battery material feeding device provided in this application provides power to the magnetic suction part 12 and the scraper 13 through the rotating drive device 11, so as to realize active capture and demagnetization and dynamic scraping of the powder particles on the screen 15, thereby fundamentally solving the problem of material blockage during the stirring process of the lithium battery material.

[0057] refer to Figure 1 In a specific embodiment, the magnetic component 12 mainly includes: a first ring 121, a first fastener 124 and a magnetic rod 122. The first ring 121 is an annular structure, and its inner ring is sleeved on the rotating shaft 14. The two can be fixedly connected by the first fastener 124 or a key and the first fastener 124. The fixed end of the magnetic rod 122 is connected to the outer peripheral surface of the first ring 121, and the outer periphery of the magnetic rod 122 forms a magnetic surface 123. The magnetic rod 122 rotates along the horizontal rotation plane under the action of the rotation driving force, and the magnetic surface 123 adsorbs magnetic impurities.

[0058] The magnetic member 12 in this embodiment adopts a split mounting structure, fixedly connected to the rotating shaft 14 via a first collar 121, and a magnetic surface 123 disposed on the outer circumference of a magnetic rod 122. The split structure of the magnetic member 12 simplifies the structure of the magnetic member 12, facilitates the removal and replacement of the magnetic rod 122, and facilitates processing.

[0059] Considering that most magnetic parts on the market use cylindrical magnetic rods 122, which have a small adsorption area and an unsatisfactory adsorption effect, in order to improve the magnetic attraction performance of existing magnetic parts, the magnetic rods 122 in this application use uniform cross-section magnetic rods, and the cross-section of the magnetic rods 122 is an oblate structure with a bulging middle and flat ends.

[0060] refer to Figure 3 . Specifically, the magnetic surface 123 includes the outer peripheral surface of the magnetic rod 122 and the end surface 1234 located at the free end of the magnetic rod 122 away from the fixed end. Among them, the outer peripheral surface mainly includes two convex contour surfaces 1233 arranged in the middle, two rounded contour surfaces 1231 respectively arranged at the left and right ends of the convex contour surface 1233 and four connecting contour surfaces 1232 respectively connecting the two convex contour surfaces 1233 and the two rounded contour surfaces 1231 on both sides. The curvature of the rounded contour surface 1231 is much smaller than the curvature of the convex contour surface 1233. The rounded contour surface 1231, the connecting contour surface 1232 and the convex contour surface 1233 transition smoothly in sequence, and are connected to form a convex magnetic outer peripheral surface distributed in the middle of the outer peripheral surface of the magnetic rod 122, which is narrow at both ends. The magnetic outer peripheral surface is connected to the free end surface to form a magnetic outer peripheral surface, which can realize the adsorption of magnetic materials. Furthermore, the adsorption area of ​​the magnetic surface 123 can be adjusted by adjusting the curvature of the outer convex contour surface 1233 and the length of the connecting contour surface 1232 .

[0061] Compared with the cylindrical magnetic rod 122, the adsorption area of ​​the magnetic rod 122 in this embodiment is larger. Combined with the dynamic active capture adsorption solution, the adsorption area and adsorption force are effectively increased, the resistance is reduced, the demagnetization efficiency is higher, and the effect is better. At the same time, the number of magnetic rods 122 can be reduced, reducing costs.

[0062] Optionally, the magnetic surface 123 is symmetrically arranged relative to the central cross section O of the magnetic rod 122, such as Figure 3 As shown. Furthermore, the angle θ between the tangent lines on both sides of the rounded contour surface 1231 can be, but is not limited to, 30° to 60°, and can be, for example, 35°, 45°, or 55°. When the angle between the tangent lines on both sides of the rounded contour surface 1231 is less than 30°, the angle is too small, equivalent to a sharp-angle structure, which is prone to stress concentration. When the angle between the tangent lines on both sides is greater than 60°, the arc formed by the rounded contour surface 1231 is large, and the arc surface formed by connecting the contour surface 1232 and the convex contour surface 1233 is equivalent to a circular cross-section, resulting in a smaller outer contour area.

[0063] It should be noted that the structure of the magnetic surface 123 is not limited to Figure 1 and Figure 2 The drum shape can also be any shape that helps to increase the adsorption area, which is not limited in this article.

[0064] The number of magnetic components 12 is two or more, and each magnetic component 12 can be provided in one layer or multiple layers. When distributed in multiple layers, each magnetic component 12 is distributed axially. Optionally, magnetic components 12 in different layers are distributed at intervals along the circumferential direction.

[0065] Specifically, the rotating shaft 14 is connected to multiple magnetic bars 122 , at least two magnetic bars 122 are arranged at the same depth position, the magnetic bars 122 at the same depth position are distributed circumferentially along the rotating shaft 14 , and the magnetic bars 122 at different depth positions are distributed axially along the rotating shaft 14 .

[0066] More specifically, the magnetic rods 122 of the magnetic attraction component 12 are distributed on the outer circumference of the first ring 121 and are connected to the rotating shaft 14 through the first ring 121. Optionally, the magnetic rods 122 are evenly distributed along the outer circumference of the first ring 121. In order to prevent the magnetic rods 122 from attracting each other, a certain distance should be maintained between adjacent magnetic rods 122. Therefore, an arrangement structure in which two or more magnetic rods 122 are arranged in a week and the magnetic rods 122 of different heights are circumferentially spaced apart can be adopted to avoid mutual interference between adjacent magnetic rods 122 in the same layer and between magnetic rods 122 in different layers, thereby ensuring the magnetic attraction effect. It should be noted that the magnetic rods 122 of different layers in this embodiment should at least ensure that the magnetic rods 122 of adjacent layers are arranged circumferentially spaced apart. It can also be that the magnetic rods 122 of some layers or all layers are arranged circumferentially spaced apart. In addition, the magnetic attraction surface 123 can be as follows Figure 3 The horizontal distribution shown can also be distributed vertically.

[0067] Combine Figure 4 and Figure 5 . In a specific embodiment, the scraper 13 includes a second ring 131, a base plate 132 and a scraper 133. The second ring 131 is an annular structure, which is mounted on the driving end 111. The base plate 132 is a plate-shaped, strip-shaped or block-shaped structure, and its fixed end is fixedly connected to the outer peripheral surface of the second ring 131. The lower part of the base plate 132 is provided with a mounting groove 1321, and the mounting groove 1321 can be a U-shaped groove or an L-shaped groove. The mounting groove 1321 can accommodate the scraper 133, and at least one side retaining wall of the mounting groove 1321 forms the mounting surface of the scraper 133. The scraper 133 is arranged in the mounting groove 1321 of the base plate 132 and is fastened by screws and other locking parts to ensure the firmness of the installation and easy replacement of the scraper 133.

[0068] like Figure 4 To enhance the stirring and scraping effects, the substrates 132 are arranged obliquely relative to the central longitudinal section of the second ring 131. Specifically, the central plane of the substrates 132 and the central longitudinal section form a certain angle, which can range from, but is not limited to, 5° to 45°. Furthermore, the number of substrates 132 can be, but is not limited to, two, and each substrate 132 is evenly distributed circumferentially around the outer surface of the second ring.

[0069] The rotary drive device 11 in the present application can be a motor or a driving mechanism including a motor. The driving end 111 of the rotary drive device 11 is specifically the motor output shaft, which is coaxially connected to the rotating shaft 14. The magnetic attraction part 12 is connected to the motor output shaft through the rotating shaft 14.

[0070] To facilitate the adjustment of the motor speed, a frequency converter can be used to control the motor speed. However, the motor speed should not be too fast and can be controlled between 10 and 20 rpm / min to prevent dust from being generated due to excessive speed. In addition, the rotating shaft 14 and the magnetic rod 122 are made of stainless steel and mirror-polished, and the scraper 133 is made of Teflon. This can not only prevent metal debris from friction with the mesh surface, but also facilitate the replacement of worn scrapers 133, resulting in lower operating costs.

[0071] In summary, the lithium battery material feeding device provided by this application has the following technical effects:

[0072] 1. The magnetic rod 122 can fully contact with the powder, has a large adsorption area and small rotational resistance, has a better demagnetization effect, and has a higher demagnetization efficiency, thereby solving the shortcoming of the poor demagnetization effect of the traditional magnetic rod 122.

[0073] 2. The magnetic rod 122 is driven to rotate by the rotary drive device 11, actively capturing magnetic substances in the powder during rotation to achieve active demagnetization.

[0074] 3. The scraper 13 is driven to rotate by the rotary drive device 11 and is arranged close to the screen 15, which increases the fluidity of the powder. The scraper 13 can also crush agglomerated powder particles to prevent accumulation and blockage.

[0075] This solution can fundamentally solve the problem of material blockage during the mixing process of lithium battery materials, improve production efficiency and reduce production costs.

[0076] like Figure 6The present application also provides a feeding mechanism, comprising a barrel 20 and a lithium battery material feeding device 10. The barrel 20 is provided with an inner cavity 203, an inlet 201 at the top and an outlet 202 at the bottom, the inlet 201 and the outlet 202 being connected to the inner cavity 203. The lithium battery material feeding device 10 is mounted on the barrel 20, and its rotary drive device 11 is disposed outside the barrel 20. A portion of the drive end 111 of the rotary drive device 11 extends vertically into the inner cavity 203. The magnetic element 12 and the scraper 13 are disposed in the inner cavity 203 of the barrel 20. The powder enters the inner cavity 203 through the feed port 201. Driven by the rotary drive device 11, the magnetic element 12 absorbs the magnetic material and stirs the powder. The scraper 13 stirs the powder and scrapes off the powder particles attached to the screen 15, thereby achieving stirring, impurity removal and filtration of the powder. The filtered powder is discharged through the discharge port 202 and fed to the homogenization mechanism.

[0077] The feeding mechanism has the above-mentioned lithium battery material feeding device, so the feeding accuracy is high, the feeding efficiency is high, the feeding is smooth, and the anti-blocking performance is good.

[0078] The present application also provides a homogenization system, which includes a homogenization mechanism and the above-mentioned feeding mechanism 1, wherein the feeding mechanism 1 feeds the homogenization mechanism. The homogenization system in the present application has high homogenization accuracy and produces lithium batteries with good performance.

[0079] Finally, it should be noted that those skilled in the art will readily conceive of other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. It is not limited to the precise structure described above and illustrated in the drawings, and various modifications and variations may be made without departing from the scope of the invention. The scope of the invention is limited solely by the appended claims.

Claims

1. A lithium battery material feeding device, characterized in that: include: A rotary drive device (11) comprising a rotary shaft (14); A magnetic attraction member (12) is connected to the rotating shaft (14) of the rotary drive device (11), and a magnetic attraction surface (123) is provided on the periphery of the magnetic attraction member (12) for capturing magnetic substances in the powder; The scraper (13) is connected to the rotating shaft (14) of the rotating drive device (11) and is used to scrape off the powder particles on the screen (15).

2. The lithium battery material feeding device according to claim 1, characterized in that: The magnetic attraction member (12) comprises: A first sleeve ring (121) is sleeved on and fixedly connected to the rotating shaft (14); A magnetic rod (122) is provided with a magnetic surface (123) on its outer periphery for capturing magnetic substances in the powder; A first fastener (124) connects the magnetic rod (122) and the first ring (121).

3. The lithium battery material feeding device according to claim 2, characterized in that: The magnetic attraction surface (123) comprises two convex contour surfaces (1233) provided in the middle, two rounded contour surfaces (1231) provided at the left and right ends of the convex contour surface (1233), and four connecting contour surfaces (1232) respectively connecting the two convex contour surfaces (1233) and the two rounded contour surfaces (1231) on both sides; It also includes an end surface (1234) provided at the free end of the magnetic bar (122).

4. The lithium battery material feeding device according to claim 3, characterized in that: The magnetic attraction surface (123) is symmetrically arranged relative to the central cross section of the magnetic rod (122).

5. The lithium battery material feeding device according to claim 4, characterized in that: The angle between the tangent lines on both sides of the rounded contour surface (1231) is 30° to 60°.

6. The lithium battery material feeding device according to claim 2, characterized in that: The rotating shaft (14) is connected to a plurality of magnetic rods (122), at least two of the magnetic rods (122) are circumferentially distributed along the same depth position of the rotating shaft (14), and at least two of the magnetic rods (122) are axially distributed along different depth positions of the rotating shaft (14).

7. The lithium battery material feeding device according to any one of claims 1 to 6, characterized in that: The scraper (13) comprises a second ring (131), a base plate (132) and a scraper (133); The second sleeve ring (131) is sleeved on the rotating shaft (14); the base plate (132) is fixedly connected to the outer periphery of the second sleeve ring (131); a mounting groove (1321) is provided at the lower portion of the base plate (132); and the scraper (133) is fixedly arranged in the mounting groove (1321).

8. The lithium battery material feeding device according to claim 7, characterized in that: The base plate (132) is distributed obliquely relative to the central longitudinal section of the second ring (131), and the angle between the central plane of the base plate (132) and the central longitudinal section ranges from 5° to 45°.

9. A feeding mechanism, characterized in that: It comprises a barrel (20) and a lithium battery material feeding device (10) according to any one of claims 1 to 8; The lithium battery material feeding device (10) is installed in the barrel (20) and is used to stir the material in the inner cavity of the barrel (20).

10. A homogenization system, characterized in that: It comprises a homogenizing mechanism and the feeding mechanism (1) according to claim 9, wherein the feeding mechanism (1) is used to feed the homogenizing mechanism.

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