A raw material demagnetizing device

Abstract

This utility model discloses a demagnetizing device for raw materials, relating to the field of lithium-ion battery manufacturing technology. The device includes a demagnetizing bottle capable of rotating a magnetic rod containing the material to be demagnetized. It comprises a housing and a roller assembly. The roller assembly includes multiple rollers spaced horizontally, rotatably connected to the housing. The distance between adjacent rollers is less than the outer diameter of the demagnetizing bottle. At least one demagnetizing bottle is supported between adjacent rollers, and at least one roller between adjacent rollers is a drive roller. This demagnetizing device ensures thorough mixing of the electrode slurry, allows all metal debris to be adsorbed by the magnetic rod, reduces operator workload, and improves efficiency.

Description

Technical Field

[0001] This utility model relates to the field of lithium-ion battery manufacturing technology, and in particular to a demagnetizing device for raw materials. Background Technology

[0002] Lithium-ion battery electrode slurry coating involves uniformly coating the positive and negative electrode sheets with a slurry that has good stability, viscosity, and flowability. Since some metal debris inevitably exists in the electrode slurry, if the magnetic debris particles are large, they can easily cause internal short circuits in the battery. Magnetic debris is a critical factor in the control of raw materials and processes during lithium-ion battery manufacturing.

[0003] Due to the nature of the raw materials, the metal debris in the electrode slurry consists of magnetic materials such as nickel, cobalt, and iron. Currently, the industry standard for demagnetization involves inserting a magnetic rod into the bottle containing the electrode slurry and stirring to adsorb the metal debris. However, manually stirring with a magnetic rod results in uneven mixing, making it impossible to completely remove the metal debris from the electrode slurry. Furthermore, this method is labor-intensive and inefficient. Utility Model Content

[0004] The purpose of this invention is to provide a demagnetizing device for raw materials, which can ensure the full mixing of electrode slurry, so that all metal debris is attracted by the magnetic rod, and can also reduce the workload of operators and improve efficiency.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A demagnetizing device for raw materials, capable of rotating a demagnetizing bottle containing a magnetic rod and the material to be demagnetized, the demagnetizing device comprising:

[0007] shell;

[0008] The roller assembly includes multiple rollers spaced apart in a horizontal direction. The multiple rollers are rotatably connected to the outer casing, and the distance between two adjacent rollers is less than the outer diameter of the demagnetizing bottle. At least one demagnetizing bottle is carried between two adjacent rollers, and at least one of the two adjacent rollers is an active roller.

[0009] As an optional solution for the demagnetizing device of the above-mentioned raw materials, a flexible sleeve is provided on the outer side of the roller.

[0010] As an optional solution for the demagnetizing device for the aforementioned raw materials, at least one of the two adjacent rollers of the roller assembly has a spacer cam protruding from its side wall, and both sides of the spacer cam can support the demagnetizing bottle.

[0011] As an optional solution for the demagnetizing device for the above-mentioned raw materials, each of the two adjacent rollers of the roller assembly is provided with a spacer cam, and the spacer cams of the two rollers are staggered, and the spacer cams of the two rollers can support one demagnetizing bottle.

[0012] As an optional demagnetizing device for the aforementioned raw materials, at least two of the aforementioned spaced cams are provided on the roller shaft.

[0013] As an optional demagnetizing device for the aforementioned raw materials, the position of the spacer cam is adjustable along the axial direction of the roller.

[0014] As an optional solution for the demagnetizing device for the above-mentioned raw materials, the demagnetizing device further includes a driving assembly, which includes a driving component and a transmission component. The transmission component is connected to the drive roller in a driving connection, and the driving component drives the drive roller to rotate through the transmission component.

[0015] As an optional solution for the demagnetizing device for the above-mentioned raw materials, the transmission component includes a first worm gear, the driving component is connected to the first worm gear, and the driving roller is fitted with a first worm wheel, which meshes with the first worm gear.

[0016] As an optional solution for the demagnetizing device of the above-mentioned raw materials, all the rollers of the roller assembly are active rollers, and all the rollers rotate in the same direction.

[0017] As an optional solution for the demagnetizing device for the aforementioned raw materials, the demagnetizing device includes at least two sets of the roller assemblies, and the at least two sets of the roller assemblies are arranged at intervals in the vertical direction.

[0018] The beneficial effects of this utility model are:

[0019] This invention provides a demagnetizing device for raw materials. In this device, the roller assembly includes multiple rollers spaced horizontally. Since the distance between two adjacent rollers is smaller than the outer diameter of the demagnetizing bottle, the demagnetizing bottle can be placed between two adjacent rollers, and the axial direction of the demagnetizing bottle is aligned with the axial direction of the rollers. When the drive roller rotates, it drives the demagnetizing bottle and another roller to rotate, causing the electrode slurry inside the demagnetizing bottle to tumble and stir with the magnetic rod. This ensures that metal debris comes into full contact with the magnetic rod and is attracted by it. After the demagnetizing device stops, the operator can remove the magnetic rod.

[0020] The demagnetizing device for this raw material can ensure that the electrode slurry is fully stirred, so that all metal debris is attracted by the magnetic rod. It can also reduce the workload of operators and improve efficiency. Attached Figure Description

[0021] Figure 1This is a schematic diagram of the structure of a demagnetizing device for raw materials provided in one embodiment of this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of a demagnetizing device for raw materials to remove the outer shell according to an embodiment of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of a roller assembly provided in one embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of a roller assembly provided in one embodiment of the present invention.

[0025] In the picture:

[0026] 100. Demagnetizing bottle;

[0027] 1. Outer shell; 11. Housing; 12. Cover plate; 13. First vertical partition; 14. Second vertical partition; 15. Horizontal partition; 16. Drive chamber; 17. Demagnetizing chamber; 18. Transmission chamber;

[0028] 2. Roller assembly; 21. Roller; 22. Spacer cam;

[0029] 3. Drive assembly; 31. Drive component; 32. First worm; 33. First worm wheel; 34. Second worm; 35. Second worm wheel; 36. Bevel gear. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0031] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0032] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and connections within two components or interactions between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] Unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of a second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0035] Lithium-ion battery electrode slurry coating involves uniformly coating the positive and negative electrode sheets with a slurry that has good stability, viscosity, and flowability. Since some metal debris inevitably exists in the electrode slurry, if the magnetic debris particles are large, they can easily cause internal short circuits in the battery. Magnetic debris is a critical factor in the control of raw materials and processes during lithium-ion battery manufacturing.

[0036] Due to the nature of the raw materials, the metal debris in the electrode slurry consists of magnetic materials such as nickel, cobalt, and iron. Currently, the industry standard for demagnetization involves inserting a magnetic rod into the bottle containing the electrode slurry and stirring to adsorb the metal debris. However, manually stirring with a magnetic rod results in uneven mixing, making it impossible to completely remove the metal debris from the electrode slurry. Furthermore, this method is labor-intensive and inefficient.

[0037] This embodiment provides a demagnetizing device for raw materials, such as... Figures 1-4 As shown, the demagnetizing device includes a housing 1 and a roller assembly 2. The housing 1 serves as the support and protection structure for the demagnetizing device. The roller assembly 2 includes multiple rollers 21 spaced apart in the horizontal direction. The multiple rollers 21 are rotatably connected to the housing 1, and the distance between two adjacent rollers 21 is less than the outer diameter of the demagnetizing bottle 100. At least one demagnetizing bottle 100 is carried between two adjacent rollers 21, and at least one of the two adjacent rollers 21 is an active roller.

[0038] In this demagnetizing device, the roller assembly 2 includes multiple rollers 21 spaced horizontally. Since the distance between two adjacent rollers 21 is smaller than the outer diameter of the demagnetizing bottle 100, the demagnetizing bottle 100 can be placed between two adjacent rollers 21, and the axial direction of the demagnetizing bottle 100 is consistent with the axial direction of the rollers 21. When the drive roller rotates, it can drive the demagnetizing bottle 100 and another roller 21 to rotate, causing the electrode slurry in the demagnetizing bottle 100 to tumble and stir with the magnetic rod, so that the metal debris can fully contact the magnetic rod and be attracted by the magnetic rod. After the demagnetizing device is stopped, the operator can remove the magnetic rod.

[0039] The demagnetizing device for this raw material can ensure that the electrode slurry is fully stirred, so that all metal debris is attracted by the magnetic rod. It can also reduce the workload of operators and improve efficiency.

[0040] Understandably, the roller 21 has a large axial dimension, and two or more demagnetizing bottles 100 can be placed between two adjacent rollers 21 to improve efficiency. To prevent the demagnetizing bottles 100 from colliding with each other, at least one of the two adjacent rollers 21 in the roller assembly 2 has a spacer cam 22 protruding from its side wall. Both sides of the spacer cam 22 can support the demagnetizing bottles 100 to separate the two demagnetizing bottles 100.

[0041] In some embodiments, only one of two adjacent rollers 21 in the roller assembly 2 is provided with a spacer cam 22. That is, in the roller assembly 2, the rollers 21 provided with the spacer cam 22 and the rollers 21 without the spacer cam 22 are arranged alternately. This structure can reduce the overall weight of the demagnetizing device and also reduce material costs.

[0042] like Figure 3 and Figure 4 As shown, in this embodiment, each of the two adjacent rollers 21 of the roller assembly 2 is provided with a spacer cam 22. That is, all roller assemblies 2 are provided with spacer cams 22 to ensure that each of the two adjacent rollers 21 can block the demagnetizing bottle 100.

[0043] like Figure 3 As shown, the spacer cams 22 of two adjacent rollers 21 are staggered, and a demagnetizing bottle 100 can be supported between the spacer cams 22 of the two rollers 21. This structure ensures that the spacer cams 22 of two adjacent rollers 21 do not interfere with each other, thereby allowing for a smaller distance between the two adjacent rollers 21, which is suitable for small-sized demagnetizing bottles 100.

[0044] like Figure 4As shown, the positions of the spacer cams 22 on two adjacent rollers 21 correspond one-to-one. That is, the number of spacer cams 22 on two adjacent rollers 21 is equal, and the positions of the spacer cams 22 on the corresponding rollers 21 are also the same.

[0045] In this embodiment, at least two spacer cams 22 are provided on the roller 21, which divide the roller 21 into three parts, meaning that three demagnetizing bottles 100 can be supported between two adjacent rollers 21. In addition, to prevent the demagnetizing bottles 100 from colliding with the outer casing 1, spacer cams 22 are also provided at both ends of the roller 21.

[0046] Understandably, the height of the demagnetizing bottle 100 is also variable. To accommodate demagnetizing bottles 100 of different heights, the position of the spacer cam 22 along the axial direction of the roller shaft 21 is adjustable. It is worth noting that, to simplify the structure, the spacer cam 22 is interference-fitted onto the roller shaft 21, allowing the operator to directly slide the position of the spacer cam 22 along the axial direction of the roller shaft 21.

[0047] In some embodiments, fastening screws or the like can be used to lock the relative position between the spacer cam 22 and the roller 21 to improve stability.

[0048] In this embodiment, a flexible sleeve is provided on the outer side of the roller 21. The flexible sleeve can provide a buffer for the demagnetizing bottle 100, ensure the smooth rotation of the demagnetizing bottle 100, prevent the demagnetizing bottle 100 from being damaged by collision between the demagnetizing bottle 100 and the roller 21, and also prevent the magnetic material attached to the outer surface of the demagnetizing bottle 100 from adsorbing onto the outer surface of the roller 21, reducing the difficulty of cleaning.

[0049] like Figure 2 As shown, the demagnetizing device also includes a drive assembly 3, which includes a drive component 31 and a transmission component. The transmission component is connected to the drive roller, and the drive component 31 drives the drive roller to rotate through the transmission component. The drive component 31 can drive the drive roller to rotate through the transmission component, thereby causing the demagnetizing bottle 100 to rotate.

[0050] like Figures 2-4 As shown, the transmission component includes a first worm gear 32, a driving component 31 is connected to the first worm gear 32, and a first worm wheel 33 is sleeved on the drive roller, which meshes with the first worm gear 32. The first worm gear 32 has a relatively long threaded section, and the first worm wheels 33 of multiple drive rollers all mesh with the threaded section of the first worm gear 32, so that when the first worm gear 32 rotates, the drive rollers rotate together with it.

[0051] Furthermore, the first worm gear 32 is arranged perpendicular to the roller shaft 21, and the first worm wheels 33 of the multiple active rollers are on the same straight line to ensure that the first worm gear 32 can drive the multiple active rollers to rotate simultaneously.

[0052] In this embodiment, all rollers 21 of the roller assembly 2 are active rollers, and all rollers 21 rotate in the same direction. That is, all rollers 21 are fitted with a first worm gear 33, and all rollers 21 are powered by a first worm 32. Since all rollers 21 rotate in the same direction, the demagnetizing bottle 100 is subjected to uniform force and can rotate smoothly.

[0053] In this embodiment, the demagnetizing device includes at least two sets of roller shaft assemblies 2, and the at least two sets of roller shaft assemblies 2 are arranged at intervals along the vertical direction. The at least two sets of roller shaft assemblies 2 can increase the number of demagnetizing bottles 100 rotating simultaneously, thereby greatly improving efficiency.

[0054] To simplify the structure, the transmission component also includes a second worm 34 and a second worm wheel 35. The first worm 32 corresponding to at least two sets of roller shaft assemblies 2 are all fitted with the second worm wheel 35. The second worm 34 meshes with at least two second worm wheels 35 to ensure that the second worm 34 can drive at least two first worm 32 to rotate simultaneously.

[0055] Furthermore, the driving component 31 is a drive motor, and the transmission component also includes two bevel gears 36. The output shaft of the drive motor is connected to one bevel gear 36, and the second worm 34 is connected to the other bevel gear 36. The two bevel gears 36 mesh with each other, and the drive motor is connected to the second worm 34 through the two bevel gears 36.

[0056] like Figures 1-4 As shown, the outer casing 1 includes a housing 11 and a cover plate 12. The roller assembly 2 and the drive assembly 3 are both disposed inside the housing 11. The housing 11 has an opening at the top, and the cover plate 12 can be fastened to the housing 11 to close the opening, so as to prevent metal debris and other dust attached to the side wall of the demagnetizing bottle 100 from spreading outside the outer casing 1.

[0057] Specifically, a first vertical partition 13 is provided inside the housing 11, which divides the housing 11 into a driving chamber 16 and a driven chamber. The driving component 31 is disposed in the driving chamber 16, the roller assembly 2 is disposed in the driven chamber, and the transmission component passes through the first vertical partition 13 to transmit power.

[0058] Furthermore, the housing 11 also includes a second vertical partition 14, which divides the driven chamber into a demagnetizing chamber 17 and a transmission chamber 18. Most of the structure of the roller 21 is located in the demagnetizing chamber 17. One end of the roller 21 passes through the second vertical partition 14 into the transmission chamber 18 and is connected to the corresponding first worm gear 33. The first worm 32 meshes with the first worm gear 33 in the transmission chamber 18.

[0059] Furthermore, the housing 11 also includes a transverse partition 15, which is disposed in the drive chamber 16. The drive component 31 is located below the transverse partition 15. The transverse partition 15 can prevent dust from covering the drive component 31, ensuring the working environment of the drive component 31 and extending its service life.

[0060] In this embodiment, the partition 15 is also located between the two sets of roller assemblies 2 to separate the two sets of roller assemblies 2, avoid mutual interference, and also prevent metal debris attached to the demagnetizing bottle 100 on the upper roller assembly 2 from falling onto the lower roller assembly 2.

[0061] In some embodiments, the transmission component includes a transmission belt and a transmission pulley sleeved on the roller 21. The transmission belt is tensioned on the transmission pulley to drive the transmission pulley to rotate. To avoid slippage, the transmission belt is a synchronous belt, the transmission pulley is a synchronous pulley, and the transmission belt meshes with the transmission pulley.

[0062] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A demagnetizing device for raw materials, capable of rotating a demagnetizing bottle (100) containing a magnetic rod and the material to be demagnetized, characterized in that, The demagnetizing device includes: Outer shell (1); The roller assembly (2) includes multiple rollers (21) spaced apart in the horizontal direction. The multiple rollers (21) are rotatably connected to the outer shell (1), and the distance between two adjacent rollers (21) is less than the outer diameter of the demagnetizing bottle (100). At least one of the demagnetizing bottles (100) is carried between two adjacent rollers (21), and at least one of the two adjacent rollers (21) is an active roller.

2. The raw material demagnetizing device according to claim 1, characterized by The roller (21) is fitted with a flexible sleeve on its outer side.

3. The raw material demagnetizing device according to claim 1, characterized by In the roller assembly (2), at least one of the two adjacent rollers (21) has a spacer cam (22) protruding from its side wall, and both sides of the spacer cam (22) can support the demagnetizing bottle (100).

4. The demagnetizing device for raw materials according to claim 3, characterized in that, The roller assembly (2) has two adjacent rollers (21) each provided with a spacer cam (22), and the spacer cams (22) of the two rollers (21) are staggered, and the spacer cams (22) of the two rollers (21) can support one demagnetizing bottle (100).

5. The raw material demagnetizing device according to claim 4, characterized by At least two of the spacer cams (22) are provided on the roller (21).

6. The raw material demagnetizing device according to claim 4, characterized by The position of the spacer cam (22) is adjustable along the axial direction of the roller (21).

7. The raw material demagnetizing device according to claim 1, wherein The demagnetizing device further includes a drive assembly (3), which includes a drive member (31) and a transmission member. The transmission member is connected to the active roller, and the drive member (31) drives the active roller to rotate through the transmission member.

8. The raw material demagnetizing device according to claim 7, characterized by The transmission component includes a first worm (32), the driving component (31) is connected to the first worm (32) in a transmission connection, and the active roller is fitted with a first worm wheel (33), which meshes with the first worm (32).

9. The raw material demagnetizing device according to claim 1, wherein All the rollers (21) of the roller assembly (2) are active rollers, and all the rollers (21) rotate in the same direction.

10. The demagnetizing device for raw materials according to claim 1, characterized in that, The demagnetizing device includes at least two sets of roller assemblies (2), and the at least two sets of roller assemblies (2) are arranged at intervals in the vertical direction.

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