Battery slurry demagnetizing device

Abstract

The utility model discloses a battery slurry demagnetizing device which comprises a lower cylinder body, a cover plate and a rotating shaft, the cover plate is detachably connected with the lower cylinder body, and the middle part of the cover plate is connected with the rotating shaft through a bearing; the rotating shaft is arranged in the lower cylinder body, the rotating shaft is provided with a stirring assembly, the connecting rod is provided with a first mounting part, and the first mounting part is used for mounting a magnetic bar. According to the utility model, the plurality of stirring components are arranged on the rotating shaft, and the plurality of stirring components are provided with the first mounting parts for mounting the magnetic bars, so that the number and the distribution range of the magnetic bars are increased, the slurry at different liquid levels can be demagnetized, and the demagnetizing efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to the field of new energy battery processing technology, and in particular to a battery slurry demagnetization device. Background Technology

[0002] A battery is a device that converts chemical energy into electrical energy. Its applications are extremely wide, ranging from portable electronic devices (such as mobile phones, laptops, and cameras) to large-scale equipment (such as electric vehicles and energy storage systems). In battery production, slurry is a crucial component, typically composed of a mixture of active materials, conductive agents, binders, and solvents. The slurry is uniformly coated onto the current collector using processes such as coating to form the positive and negative electrodes of the battery, thus achieving electrode fabrication.

[0003] Currently, the preparation, demagnetization, and transfer processes of the slurry in the electrode section often face the problem of contamination by metallic substances, posing a significant challenge to the safety and reliability of lithium-ion batteries. Existing technologies have significant shortcomings in slurry demagnetization. Many traditional demagnetization devices have low demagnetization efficiency for magnetic materials in the slurry, failing to remove most small-diameter metallic magnetic materials. This results in some fine magnetic materials being difficult to intercept and directly coated onto the current collector surface. When the finished electrode roll is transferred to the subsequent stages for cell assembly, testing, and charging, the active materials are activated. Under the influence of current, the magnetic materials inside the slurry migrate to the surfaces of the positive and negative electrodes at a certain voltage, piercing the cell separator layer and causing abnormal cell performance, such as high self-discharge and cell bulging. In severe cases, it can even lead to battery fires and explosions.

[0004] Therefore, this application aims to propose a novel battery slurry demagnetization device to solve the above-mentioned problems. Utility Model Content

[0005] The main purpose of this utility model is to provide a battery slurry demagnetizing device, which aims to solve the technical problems of low demagnetizing efficiency and poor demagnetizing effect in the existing battery slurry demagnetizing devices.

[0006] To achieve the above-mentioned utility model objectives, this utility model proposes a battery slurry demagnetizing device, comprising a lower cylinder, a cover plate, and a rotating shaft. The cover plate and the lower cylinder are detachably connected, and the middle part of the cover plate is connected to the rotating shaft via a bearing. The rotating shaft is disposed within the lower cylinder and is provided with a stirring assembly. The stirring assembly is provided with a first mounting part, which is used to mount a magnetic rod.

[0007] Furthermore, multiple stirring components are spaced apart along the axial direction of the rotating shaft.

[0008] Furthermore, multiple stirring components are spaced apart along the circumferential direction of the rotating shaft.

[0009] Furthermore, the stirring assembly includes a connecting rod and a guide plate, the connecting rod is connected to the rotating shaft, and the guide plate is disposed on the connecting rod, and the connecting rod is provided with the first mounting part.

[0010] Furthermore, the stirring assembly also includes a stirring paddle, which is connected to the end of the guide plate away from the rotating shaft.

[0011] Furthermore, the stirring paddle is provided with a second mounting part, which is arranged along the length direction of the stirring paddle, and the second mounting part is used to mount a magnetic rod.

[0012] Furthermore, the cover plate is also provided with multiple mounting holes and at least one observation hole.

[0013] Furthermore, a feed pipe is provided at the bottom of the lower cylinder, and a discharge pipe is provided at the top of the lower cylinder; both the feed pipe and the discharge pipe are connected to the receiving cavity of the lower cylinder.

[0014] Furthermore, the lower cylinder body is also provided with a base.

[0015] Furthermore, the lower cylinder is provided with a water inlet below the discharge pipe, and the bottom of the lower cylinder is provided with a water outlet. A cooling channel is provided inside the cavity wall of the receiving cavity, and both the water inlet and the water outlet are connected to the cooling channel.

[0016] Furthermore, the cover plate is provided with multiple limiting grooves along its edge, and the top outer edge of the lower cylinder is provided with multiple locking grooves accordingly. The limiting grooves and locking grooves are connected by locking blocks.

[0017] Beneficial effects:

[0018] Compared with the prior art, a battery slurry demagnetizing device according to an embodiment of this application includes a lower cylinder, a cover plate, and a rotating shaft. The cover plate and the lower cylinder are detachably connected, and the middle part of the cover plate is connected to the rotating shaft via a bearing. The rotating shaft is disposed in the lower cylinder and is equipped with multiple stirring components. Each stirring component is provided with a first mounting part for mounting magnetic rods. This technical solution increases the number and distribution range of magnetic rods by setting stirring components on the rotating shaft and providing first mounting parts on the stirring components for mounting magnetic rods, thus enabling demagnetization of slurries at different liquid levels and improving demagnetization efficiency. Attached Figure Description

[0019] Figure 1 This is an exploded schematic diagram of a battery slurry demagnetizing device according to an embodiment of the present invention;

[0020] Figure 2 This is a three-dimensional schematic diagram of the connection between the cover plate and the demagnetizing mechanism according to an embodiment of the present invention;

[0021] Figure 3 This is a three-dimensional schematic diagram of the connection between the cover plate and the demagnetizing mechanism in another embodiment of the present invention.

[0022] Figure 4 This is a side view of the lower cylinder body according to an embodiment of the present invention;

[0023] Figure 5 for Figure 4 Schematic diagram of section AA;

[0024] Figure 6 This is a schematic diagram of the lower cylinder body according to an embodiment of the present invention.

[0025] in:

[0026] 1. Lower cylinder body; 10. Feed pipe; 11. Discharge pipe; 12. Water inlet; 13. Water outlet; 14. Base; 15. Locking groove; 16. Cooling channel; 17. Receiving cavity; 2. Cover plate; 20. Mounting hole; 21. Observation hole; 22. Limiting groove; 3. Rotating shaft; 30. Stirring assembly; 4. Connecting rod; 40. First mounting part; 41. Guide plate; 5. Stirring paddle.

[0027] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention.

[0029] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," 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. They 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 or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly and specifically defined.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction 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.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the 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 the 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" the 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.

[0032] A battery slurry demagnetization device is a piece of equipment that uses a specific mechanical structure and working principle to stir and demagnetize the battery slurry during preparation and transportation. It typically includes a stirring mechanism and a demagnetization mechanism, effectively adsorbing magnetic substances from the slurry and allowing the normal slurry to flow out through the outlet, thus ensuring the quality of the slurry during transportation.

[0033] Through long-term observation and disassembly of various defective batteries during battery production, the inventors discovered that the separator layer of the battery cell could be punctured by magnetic materials such as iron, cobalt, and nickel particles. Analysis of battery production processes and equipment revealed that existing battery slurry demagnetization devices typically employ either a stirring rod directly connected to the stirring paddle at the stirring center, or multiple magnetic rods vertically inserted into the lower cylinder to simultaneously stir and adsorb magnetic materials. However, the magnetic rods positioned at the stirring center are too far from the inner wall of the lower cylinder; even if the lower cylinder itself can adsorb magnetic materials, those in the space between them cannot be completely adsorbed. Furthermore, multiple magnetic rods vertically inserted into the lower cylinder, being perpendicular to the slurry surface, hinder horizontal flow of the slurry, resulting in low stirring efficiency and slow slurry transport and mixing. Consequently, the magnetic rods' adsorption efficiency for magnetic materials is also low, leading to relatively poor demagnetization.

[0034] To address the problems of low demagnetization efficiency and poor demagnetization effect of the aforementioned battery slurry demagnetizing devices in actual use, this application provides a battery slurry demagnetizing device. The following will describe the battery slurry demagnetizing device in this application in detail with reference to the accompanying drawings.

[0035] Please see Figures 1 to 6 In this embodiment, a battery slurry demagnetizing device is provided, including a lower cylinder 1, a cover plate 2, and a rotating shaft 3. The cover plate 2 and the lower cylinder 1 are detachably connected, and the middle part of the cover plate 2 is connected to the rotating shaft 3 via a bearing. The rotating shaft 3 is disposed inside the lower cylinder 1 and is equipped with a stirring assembly 30. The stirring assembly 30 is provided with a first mounting part 40 for mounting a magnetic rod. Specifically, the battery can be a lithium battery.

[0036] In this embodiment, the lower cylinder 1 is the main body of the demagnetizing device, primarily providing a receiving cavity 17 for the slurry, used to hold and process the battery slurry. Additionally, the lower cylinder 1 supports other components, such as the cover plate 2 and the rotating shaft 3, and ensures the stability and sealing of the entire device. The cover plate 2 is located above the lower cylinder 1 and is detachably connected to it, mainly serving to seal the receiving cavity 17, preventing slurry leakage during processing. Simultaneously, the middle part of the cover plate 2 is connected to the rotating shaft 3 via a bearing, allowing the rotating shaft 3 to rotate freely within the cover plate 2, ensuring both the device's sealing and the normal operation of the rotating shaft 3. The rotating shaft 3 is one of the core components of the demagnetizing device in this application, penetrating the cover plate 2 and extending into the lower cylinder 1. The portion of the rotating shaft 3 located outside the lower cylinder 1 is used to connect to the drive unit to provide rotational power to the rotating shaft 3. When the drive unit is activated, the rotating shaft 3 drives the connecting rod 4 and the magnetic rod on it to rotate together, thereby generating a magnetic field and adsorbing magnetic impurities in the slurry. For example, the drive component connected to the external part of the rotating shaft 3 in this application can be a geared motor. This application does not impose specific limitations on the drive component, as long as it can provide controllable rotational power to the rotating shaft 3. The stirring assembly 30 is disposed on the part of the rotating shaft 3 located inside the lower cylinder 1, and arranged in multiple parallel layers. The main function of the stirring assembly 30 is to serve as a carrier for the magnetic rod, fixing the magnetic rod in a specific position. When the rotating shaft 3 rotates, the stirring assembly 30 will drive the magnetic rod to move together, thereby ensuring that the magnetic field can fully cover the area through which the slurry flows. The magnetic rod is a key component of the demagnetizing device. It is installed on the first mounting part 40 of the stirring assembly 30 and can generate a strong magnetic field. When the battery slurry flows near the magnetic rod, the metallic magnetic impurities in it will be adsorbed and separated after the slurry is discharged. The first mounting part 40 is used to install and fix the magnetic rod. For example, the first mounting part 40 can be a groove, a locking block structure, or a hollow cavity structure that starts along the length direction of the stirring assembly 30. This application does not make specific limitations. It is necessary to ensure that the magnetic rod can be fixed on the first mounting part 40. This application preferably sets the first mounting part 40 as a hollow structure, that is, the stirring assembly 30 is hollow inside and the wall thickness should be less than 3mm. The surface of the magnetic rod installed inside the stirring assembly 30 should be seamless with the inner wall surface of the stirring assembly 30 to ensure the effectiveness of installing and fixing the magnetic rod. This can avoid the magnetic rod from directly contacting the slurry, avoid friction between the two, and ensure the demagnetization effect of the magnetic rod.

[0037] In some embodiments, a plurality of stirring components 30 are spaced apart along the axial direction of the rotating shaft 3. That is, a plurality of stirring components 30 are spaced apart along the length direction of the rotating shaft 3. When the rotating shaft 3 is placed vertically, the plurality of stirring components 30 are located at different heights in the vertical direction, which can stir the battery slurry at different heights in the lower cylinder 1 and adsorb metallic magnetic impurities in the battery slurry by magnetic rods.

[0038] In some embodiments, a plurality of the stirring components 30 are spaced apart along the circumferential direction of the rotating shaft 3.

[0039] It should be noted that this application arranges multiple stirring components 30 from multiple angles on each layer. Preferably, three stirring components 30 are arranged at 120-degree angles to each other on the same layer, and three layers are arranged consecutively. The arrangement of multiple stirring components 30 at different angles ensures that the magnetic field can more evenly cover the area through which the slurry flows. This reduces the magnetic field blind zone, allowing metallic magnetic impurities to be effectively adsorbed regardless of their location. When the slurry flows through the device, it will come into contact with multiple stirring components 30 and their magnetic rods multiple times, increasing the number of times metallic magnetic impurities are adsorbed and further improving the demagnetization efficiency. At the same time, multiple stirring components 30 support the rotating shaft 3 from multiple angles, which helps to disperse the force generated when the rotating shaft 3 rotates, thereby enhancing the structural stability of the entire device.

[0040] In the above embodiments, by setting a stirring assembly 30 on the rotating shaft 3, and setting a first mounting part 40 on the stirring assembly 30 to mount magnetic rods, the number and distribution range of magnetic rods are increased, which can demagnetize slurries at different liquid levels and improve demagnetization efficiency. At the same time, the multi-layer stirring assemblies 30 are arranged in parallel with each other. When the stirring assembly 30 is arranged in parallel with the liquid surface of the slurry, it is beneficial to promote the flow of the slurry in the horizontal direction, improve stirring efficiency, further improve demagnetization efficiency, and enhance the demagnetization effect of the demagnetization device.

[0041] Please see Figures 1 to 6 In one embodiment, the stirring assembly 30 includes a connecting rod 4 and a guide plate 41. The connecting rod 4 is connected to the rotating shaft 3, and the guide plate 41 is disposed on the connecting rod 4. A first mounting portion 40 is disposed on the connecting rod 4.

[0042] In this embodiment, the guide plate 41, through its specific shape and position, effectively guides the flow path of the battery slurry within the device. This helps ensure that the slurry flows uniformly and stably near the magnetic rod, thereby increasing the chance of contact between metallic magnetic impurities and the magnetic field. It is understood that without the guide plate 41, the slurry may form eddies or accumulate in dead zones during flow. Slurry in these areas is difficult to treat effectively, potentially leading to poor demagnetization. The design of the guide plate 41 effectively reduces the formation of eddies and dead zones, making the slurry flow smoother and more uniform.

[0043] In the above embodiment, the guide plate 41 and the magnetic rod work together. The magnetic rod generates a magnetic field to attract metallic magnetic impurities, while the guide plate 41 guides the slurry flow to ensure that the impurities are fully exposed to the magnetic field. This combined effect of the magnetic field and the flow enables efficient demagnetization. Specifically, the magnetic range of the magnetic rod is 8000-12000 Gauss.

[0044] Please see Figure 3 For example, the guide plate 41 of this application has a structure in which the front end is inclined on both the upper and lower sides and the tail end is connected to the connecting rod 4 in a flat shape. This structure can reduce the resistance when stirring the slurry and increase the contact area to ensure that impurities can be fully exposed in the magnetic field and adsorbed.

[0045] Please see Figures 1 to 6 In one embodiment, the length of the guide plate 41 is less than the length of the connecting rod 4, and the end of the guide plate 41 away from the rotating shaft 3 is flush with the end of the connecting rod 4.

[0046] In this embodiment, a gap is maintained between the guide plate 41 and the rotating shaft 3, making it easier to access and clean the entire area of ​​the rotating shaft 3 during cleaning and maintenance. This helps to keep the device clean and extend its service life.

[0047] Please see Figures 1 to 6 In one embodiment, the stirring assembly 30 further includes a stirring paddle 5, which is connected to the end of the guide plate 41 away from the rotating shaft 3. Multiple stirring paddles 5 may be provided.

[0048] In this embodiment, the agitator 5 is used to agitate the slurry, making it more evenly distributed within the device. This helps ensure that metallic magnetic impurities in the slurry are fully exposed to the magnetic field, thereby improving demagnetization efficiency. The agitation of the agitator 5 prevents metallic magnetic impurities from depositing or accumulating within the device, thus reducing dead zones and blind spots and ensuring comprehensive slurry treatment. Simultaneously, the connection design between the agitator and the guide plate 41 makes the entire device more compact. This integrated design not only saves space but also helps improve the operational stability and reliability of the device.

[0049] Please see Figures 1 to 6 In one embodiment, the stirring paddle 5 is provided with a second mounting part, which is arranged along the length direction of the stirring paddle, and the second mounting part is used to mount a magnetic rod.

[0050] In this embodiment, by providing a second mounting part on the stirring paddle 5 and installing a magnetic rod, the magnetic field can more evenly cover the slurry while the stirring paddle 5 agitates the slurry. This further improves the demagnetization efficiency of the demagnetizing device. The second mounting part can be a fixing groove, a cavity inside the stirring paddle, or the magnetic rod can be installed on the second mounting part by bolts or other fasteners. This application does not impose specific limitations.

[0051] Please see Figures 1 to 6 In one embodiment, the cover plate 2 is also provided with a plurality of mounting holes 20 and at least one observation hole 21.

[0052] In this embodiment, the mounting holes 20 are used to install sensors. For example, multiple mounting holes 20 may be used to install one or more temperature monitors, stirrer accessories, and liquid level sensors, etc. The observation hole 21 is used to observe the internal condition of the lower cylinder 1.

[0053] In the above embodiments, the design of multiple mounting holes 20 not only facilitates the installation of sensors but also provides a guarantee for subsequent upgrades and expansions of the equipment, for example, if additional sensors, valves, or other accessories need to be added. The design of the observation hole 21 allows operators to intuitively observe the state of the battery slurry inside the demagnetizing device, which is beneficial for monitoring the entire process.

[0054] Please see Figures 1 to 6 In one embodiment, a feed pipe 10 is provided at the bottom of the lower cylinder 1, and a discharge pipe 11 is provided at the upper part of the lower cylinder 1; both the feed pipe 10 and the discharge pipe 11 are connected to the receiving cavity 17 of the lower cylinder 1.

[0055] In this embodiment, the feed pipe 10 is used for feeding materials, and the discharge pipe 11 is used for discharging materials.

[0056] In the above embodiments, the feed pipe 10 is located below the lower cylinder 1, and the discharge pipe 11 is located above the lower cylinder 1. This ensures that the slurry makes full contact with the connecting rod 4 and the magnetic rod on the stirring paddle during feeding, thereby ensuring the effective removal of magnetic materials. It is understood that at least one feed pipe 10 and one discharge pipe 11 are provided. This application provides multiple feed pipes 10 and discharge pipes 11 to improve feeding efficiency and to expedite the discharge of the slurry from the lower cylinder 1 during discharge.

[0057] Please see Figures 1 to 6 In one embodiment, the lower cylinder 1 is further provided with a base 14.

[0058] In the above embodiment, the base 14 is the supporting structure for the lower cylinder 1, including multiple support rods and support seats at the bottom of the support rods. The support seats firmly fix the device to the ground or other foundation, significantly enhancing the stability of the entire demagnetizing device. During equipment operation, stirring, demagnetizing, and slurry flow all generate vibrations and impacts. The base 14 effectively absorbs and disperses these forces, preventing the lower cylinder 1 from shaking or shifting, ensuring stable equipment operation.

[0059] Please see Figures 1 to 6 In one embodiment, the lower cylinder 1 is provided with an inlet 12 below the discharge pipe 11, and an outlet 13 is provided at the bottom of the lower cylinder 1. A cooling channel 16 is provided in the cavity wall of the receiving cavity 17, and the inlet 12 and the outlet 13 are both connected to the cooling channel 16.

[0060] It should be noted that the temperature of the battery slurry may change during demagnetization due to stirring, chemical reactions, or the influence of the external environment. Excessively high temperatures may lead to a decrease in slurry performance and a reduction in the magnetic strength of the magnetic rods. Therefore, by connecting the inlet 12 and outlet 13 to the cooling channel 16, cooling water or other cooling media can be introduced to cool the slurry, thereby maintaining its operation within a suitable temperature range. At a suitable temperature, the fluidity, viscosity, and other physical properties of the battery slurry will be at their optimal state, which helps to improve demagnetization efficiency. Temperature control of the slurry through the cooling channel 16 ensures that the chemical properties of the slurry remain stable during demagnetization, thereby improving the demagnetization effect and product quality.

[0061] In this embodiment, when the cooling water enters the cooling channel 16 from above, it can exchange heat more fully with the higher-temperature battery slurry, ensuring that the slurry is demagnetized at room temperature. Since heat exchange is based on temperature difference, the indirect contact between the cooling water and the high-temperature slurry can more effectively reduce the temperature of the slurry. As the cooling water flows in the cooling channel 16 and absorbs heat, its temperature gradually increases, and finally, when it is discharged from the lower outlet 13, it carries away a large amount of heat.

[0062] Please see Figures 1 to 6 In one embodiment, the cover plate 2 is provided with a plurality of limiting grooves 22 along its edge, and the lower cylinder 1 is provided with a plurality of locking grooves 15 corresponding to the top outer edge. The limiting grooves 22 and the locking grooves 15 are connected by locking blocks.

[0063] In this embodiment, the limiting groove 22 is used to cooperate and fix with the locking groove 15 in the lower cylinder 1 to prevent the cover plate 2 from rotating or shaking. The locking groove 15 is used to fix the limiting block. Specifically, the bottom of the locking groove 15 is provided with a structure for fixing the locking block, such as a through hole or groove structure. After the limiting block is aligned with the corresponding position of the locking groove 15, the locking block passes through the limiting groove 22 and is fixed in the locking groove 15 to achieve the purpose of fixing the limiting groove 22 and the locking groove 15.

[0064] The operation process of the battery slurry demagnetization device is as follows: After checking and setting the equipment parameters, the prepared raw materials are fed into the receiving cavity 17 of the lower cylinder 1 through the feed pipe 10 in a specific order. The motor drives the rotating shaft 3 to rotate, and the stirring paddle and connecting rod 4, driven by the rotating shaft 3, perform mixing operations such as turning, kneading, and shearing on the slurry. During the mixing process, the temperature of the slurry is controlled by the cooling water in the cooling channel 16 to ensure that the slurry operates within a suitable temperature range, avoiding performance degradation or equipment damage due to excessive temperature. During the stirring process, the magnetic force of the magnetic rod removes magnetic substances from the slurry. The demagnetization effect can be controlled by adjusting the parameters of the demagnetization equipment (such as magnetic field strength and demagnetization time). After demagnetization, the slurry is collected through the discharge pipe 11 and enters the next production process.

[0065] In summary, the battery slurry demagnetizing device according to an embodiment of this application includes a lower cylinder 1, a cover plate 2, and a rotating shaft 3. The cover plate 2 and the lower cylinder 1 are detachably connected, and the middle part of the cover plate 2 is connected to the rotating shaft 3 via a bearing. The portion of the rotating shaft 3 located outside the lower cylinder 1 is used to connect to a driving component, and the portion located inside the lower cylinder 1 is provided with parallel stirring components 30. The stirring components 30 are provided with a first mounting part 40 for mounting magnetic rods. This technical solution provides stirring components 30 on the rotating shaft 3 and a first mounting part 40 on the connecting rod 4 for mounting magnetic rods, increasing the number and distribution range of magnetic rods, enabling demagnetization of slurries at different liquid levels, and improving demagnetization efficiency. Furthermore, the parallel arrangement of the stirring components 30, when the connecting rod 4 is parallel to the slurry surface, facilitates the horizontal flow of the slurry, improving stirring efficiency and further enhancing demagnetization efficiency, thus strengthening the demagnetizing effect of the demagnetizing device.

[0066] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A battery slurry demagnetizing device, characterized in that, include: The lower cylinder body, cover plate, and rotating shaft are provided. The cover plate and the lower cylinder body are detachably connected. The middle part of the cover plate is connected to the rotating shaft through a bearing. The rotating shaft is disposed in the lower cylinder body and is provided with multiple stirring components. Each stirring component is provided with a first mounting part for mounting a magnetic rod.

2. The battery slurry demagnetizing device according to claim 1, characterized in that, Multiple stirring components are spaced apart along the axial direction of the rotating shaft.

3. The battery slurry demagnetizing device according to claim 1, characterized in that, Multiple stirring components are spaced apart along the circumferential direction of the rotating shaft.

4. The battery slurry demagnetizing device according to claim 1, characterized in that, The stirring assembly includes a connecting rod and a guide plate. The connecting rod is connected to the rotating shaft, and the guide plate is disposed on the connecting rod. The connecting rod is provided with the first mounting part.

5. The battery slurry demagnetizing device according to claim 4, characterized in that, The stirring assembly also includes a stirring paddle, which is connected to the end of the guide plate away from the rotating shaft.

6. The battery slurry demagnetizing device according to claim 5, characterized in that, The stirring paddle is provided with a second mounting part, which is arranged along the length of the stirring paddle, and is used to mount a magnetic rod.

7. The battery slurry demagnetizing device according to claim 1, characterized in that, The cover plate is also provided with multiple mounting holes and at least one observation hole.

8. The battery slurry demagnetizing device according to claim 1, characterized in that, The bottom of the lower cylinder is provided with a feeding pipe, and the upper part of the lower cylinder is provided with a discharging pipe; both the feeding pipe and the discharging pipe are connected to the receiving cavity of the lower cylinder.

9. The battery slurry demagnetizing device according to claim 1, characterized in that, The lower cylinder body is also provided with a base.

10. The battery slurry demagnetizing device according to claim 8, characterized in that, The lower cylinder is located below the discharge pipe and has an inlet. The bottom of the lower cylinder has an outlet. The cavity wall of the receiving chamber has a cooling channel. Both the inlet and outlet are connected to the cooling channel.

11. The battery slurry demagnetizing device according to claim 1, characterized in that, The cover plate is provided with multiple limiting grooves along its edge, and the lower cylinder body is provided with multiple locking grooves on its top outer edge. The limiting grooves and locking grooves are connected by locking blocks.

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