Battery slurry demagnetizing device and battery production equipment

Abstract

The utility model belongs to the technical field of battery production equipment, and particularly relates to a battery slurry demagnetizing device and battery production equipment. The demagnetizing device for the battery slurry comprises a pipe body assembly used for introducing the battery slurry; the demagnetizing assembly is arranged on the outer side of the pipe body assembly in a sleeving mode, and the demagnetizing assembly comprises a plurality of magnetic rings; and the stirring and conveying mechanism is arranged in the pipe body assembly in a penetrating manner. According to the utility model, the battery slurry can move in the circumferential direction while flowing in the axial direction through stirring operation, so that the battery slurry at different positions in the pipe body assembly can be in contact with a high-intensity magnetic field area generated by the magnetic ring, the demagnetizing operation is more uniform, the overall demagnetizing effect is improved, and the demagnetizing efficiency is improved. And the battery slurry in the pipe body assembly can be conveyed, so that the trafficability of the battery slurry can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery production equipment, and in particular relates to a battery slurry demagnetization device and battery production equipment. Background Art

[0002] During the battery manufacturing process, magnetic foreign matter in the battery slurry can cause the battery to self-discharge or even short-circuit, thus affecting battery safety. Therefore, after the positive and negative electrode materials are combined with conductive agents, binders, solvents and other materials to form battery slurry, the battery slurry needs to be demagnetized to remove the magnetic foreign matter, and then the battery slurry is applied to the surface of the positive and negative electrode foils to form electrodes.

[0003] In the existing process, permanent magnet bars are usually connected in series or in parallel to form a demagnetization device. The demagnetization device is connected to a pipeline, so that the battery slurry flows through the magnetic bar, so as to use the magnetic attraction of the magnetic bar to absorb the magnetic foreign matter in the slurry. However, due to the uneven distribution of magnetic field strength at different positions on the surface of the magnetic bar, the magnetic field strength decays rapidly with the increase of distance. Therefore, the local magnetic field around the magnetic bar is weak or even has a zero magnetic field area, resulting in insufficient magnetic force on the slurry far away from the magnetic bar, making it difficult to effectively absorb the magnetic foreign matter; if the interval between the magnetic bars is reduced, it will affect the passability of the battery slurry, and will cause the pressure in the demagnetization space to increase, so that the already absorbed magnetic foreign matter will be impacted and enter the battery slurry again. Therefore, the existing demagnetization device has the above-mentioned defects, the demagnetization effect is not good, and the performance of the battery product is affected. Utility Model Content

[0004] In view of this, in order to improve at least one of the above-mentioned problems existing in the prior art, the utility model provides a battery slurry demagnetization device and a battery production equipment.

[0005] The first technical solution of the utility model provides a battery slurry demagnetization device, including: a tube body assembly, used to pass battery slurry; a demagnetization assembly, sleeved on the outside of the tube body assembly, the demagnetization assembly includes multiple magnetic rings; a stirring and conveying mechanism, penetrated into the tube body assembly.

[0006] In a feasible implementation, the demagnetization assembly includes multiple first magnetic rings and multiple second magnetic rings arranged along the axial direction of the tube body assembly; wherein the magnetic pole direction of the first magnetic ring is arranged along the axial direction of the tube body assembly, and the magnetic pole direction of the second magnetic ring is arranged along the radial direction of the tube body assembly.

[0007] In a feasible implementation, the magnetic poles of any two adjacent first magnetic rings are in opposite directions, and a second magnetic ring is provided between any two adjacent first magnetic rings; and / or

[0008] The magnetic poles of any two adjacent second magnetic rings are in opposite directions, and a first magnetic ring is provided between any two adjacent second magnetic rings.

[0009] In a feasible implementation, the plurality of first magnetic rings and the plurality of second magnetic rings are configured as a Halbach annular magnet array.

[0010] In a feasible implementation, the inner diameter of the first magnetic ring and the inner diameter of the second magnetic ring are both the same as the outer diameter of the tube assembly; and / or

[0011] The thickness of the first magnetic ring is in the range of 2 mm to 10 mm; and / or

[0012] The thickness of the second magnetic ring is in the range of 2 mm to 10 mm.

[0013] In a feasible implementation, the stirring and conveying mechanism includes: a screw rod, axially arranged in the tube body assembly; a connecting rod, connected to one end of the screw rod in the axial direction, and the end of the connecting rod away from the screw rod extends axially out of the tube body assembly; a drive joint, connected to the end of the connecting rod away from the screw rod.

[0014] In a feasible implementation, the tube body assembly includes: a support tube; a feed structure connected to one end of the support tube in the axial direction, a first center hole and a feed port are provided on the feed structure, and the feed port is eccentrically arranged relative to the first center hole; a discharge structure connected to the other end of the support tube in the axial direction, a discharge structure is provided on the discharge port; wherein, a plurality of magnetic rings are arranged on the outer side of the support tube.

[0015] In a feasible implementation, the tube body assembly also includes: a sealing rubber ring, which is sleeved on the connecting rod, and at least a portion of the sealing rubber ring is located in the first center hole; a pressing member, which is sleeved on the connecting rod and presses the sealing rubber ring in the axial direction.

[0016] In a feasible implementation, the tube body assembly also includes: a first sealing ring, arranged between the feed structure and the support tube, and arranged along the circumference of the support tube; a second sealing ring, arranged between the discharge structure and the support tube, and arranged along the circumference of the support tube.

[0017] The technical solution of the second aspect of the utility model provides a battery production equipment, including the battery slurry demagnetization device in any one of the above-mentioned first aspects.

[0018] The beneficial effects of the above technical solution of the utility model are embodied in:

[0019] Through the stirring operation, the battery slurry can be made to move circumferentially while flowing in the axial direction, so that the battery slurry at different positions in the tube body assembly can contact the strong magnetic field area generated by the magnetic ring, and the demagnetization operation is more uniform, which is beneficial to improving the overall demagnetization effect. The battery slurry in the tube body assembly can also be transported, which is beneficial to improving the passability of the battery slurry. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Shown is a schematic diagram of a battery slurry demagnetization device provided by an embodiment of the utility model.

[0021] Figure 2 Shown is a cross-sectional view of a battery slurry demagnetization device provided by an embodiment of the utility model.

[0022] Figure 3 Shown is a schematic diagram of magnetic field distribution of a demagnetization component of a battery slurry demagnetization device provided by an embodiment of the utility model.

[0023] Figure 4 Shown is a schematic diagram of a first magnetic ring and a second magnetic ring of a battery slurry demagnetization device provided by an embodiment of the utility model.

[0024] Figure 5 Shown is a schematic diagram of the magnetic pole direction of the first magnetic ring provided in one embodiment of the utility model.

[0025] Figure 6 Shown is a schematic diagram of the magnetic pole direction of the second magnetic ring provided in one embodiment of the utility model.

[0026] Figure 7 Shown is a schematic diagram of a decomposed state of a battery slurry demagnetization device provided by an embodiment of the utility model.

[0027] Figure 8 Shown is a schematic diagram of a stirring and conveying mechanism provided by an embodiment of the utility model.

[0028] Fig. 9 Shown is a schematic diagram of a material feeding structure provided by an embodiment of the utility model.

[0029] Among them, Figure 3 , Figure 5 and Figure 6 In the figure, the arrow inside the magnetic ring indicates the direction of the magnetic pole, and the arrow outside the magnetic ring indicates the direction of the magnetic field lines.

[0030] Description of reference numerals:

[0031] 1 pipe body assembly, 11 support pipe, 111 limit structure, 12 feed structure, 121 first center hole, 122 feed port, 13 discharge structure, 131 discharge port, 132 boss structure, 141 first sealing ring, 142 second sealing ring, 151 sealing rubber ring, 152 pressing member;

[0032] 2 demagnetization component, 21 first magnetic ring, 22 second magnetic ring;

[0033] 3 stirring and conveying mechanism, 31 screw rod, 32 connecting rod, 33 driving joint. DETAILED DESCRIPTION

[0034] In the description of the application, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise clearly and specifically limited. In the embodiment of the present application, all directional indications (such as up, down, left, right, front, back, top, bottom ...) are only used to explain the relative position relationship, motion conditions, etc. between the components under a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their deformations are intended to cover non-exclusive inclusions. For example, the process, method, system, product or equipment comprising a series of steps or units are not limited to the steps or units listed, but optionally also include the steps or units not listed, or optionally also include other steps or units inherent to these processes, methods, products or equipment.

[0035] In addition, reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0036] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0037] Application Overview

[0038] In recent years, with the rapid development of battery technology, power batteries have been widely used in many fields. For example, in electric vehicles and other fields, power batteries are common energy supply equipment, and their safety and reliability play a vital role for electrical equipment. In the battery production process, magnetic foreign matter in the battery slurry will cause the battery self-discharge to increase or even short-circuit, thereby affecting battery safety. For this reason, in the existing production process, after the positive and negative electrode materials are combined with conductive agents, binders, solvents and other materials to form battery slurry, the battery slurry needs to be demagnetized to remove the magnetic foreign matter, and then the battery slurry is applied to the surface of the positive and negative electrode foils to form electrodes.

[0039] In the existing process, permanent magnet bars are usually connected in series or in parallel to form a demagnetization device. The demagnetization device is connected to a pipeline, so that the battery slurry flows through the magnetic bar, so as to use the magnetic attraction of the magnetic bar to absorb the magnetic foreign matter in the slurry. However, due to the uneven distribution of magnetic field strength at different positions on the surface of the magnetic bar, the magnetic field strength decays rapidly with the increase of distance. Therefore, the local magnetic field around the magnetic bar is weak or even has a zero magnetic field area, resulting in insufficient magnetic force on the slurry far away from the magnetic bar, making it difficult to effectively absorb the magnetic foreign matter; if the interval between the magnetic bars is reduced, it will affect the passability of the battery slurry, and will cause the pressure in the demagnetization space to increase, so that the already absorbed magnetic foreign matter will be impacted and enter the battery slurry again. Therefore, the existing demagnetization device has the above-mentioned defects, the demagnetization effect is not good, and the performance of the battery product is affected.

[0040] Some embodiments of the battery slurry demagnetization device and battery production equipment in the technical solution of the utility model are provided below.

[0041] In an embodiment of the first aspect of the present utility model, a battery slurry demagnetization device is provided, such as Figure 1 and Figure 2 As shown, the battery slurry demagnetization device includes a tube body assembly 1, a demagnetization assembly 2 and a stirring and conveying mechanism 3. The tube body assembly 1 is the main structure of the battery slurry demagnetization device, and the battery slurry can pass into the tube body assembly 1 and flow along the axial direction of the tube body assembly 1; the demagnetization assembly 2 is sleeved on the outside of the tube body assembly 1, and the demagnetization assembly 2 includes a plurality of magnetic rings, which can generate a magnetic field inside the tube body assembly 1 and demagnetize the battery slurry in the tube body assembly 1 by using the magnetic field; the stirring and conveying mechanism 3 is penetrated in the tube body assembly 1, and can stir and convey the battery slurry in the tube body assembly 1.

[0042] In production applications, one end of the tube body assembly 1 in the axial direction is connected to the feed pipeline, and the other end is connected to the discharge pipeline. After the battery slurry enters the tube body assembly 1, it flows in the axial direction. The stirring and conveying mechanism 3 can make the battery slurry flow in the axial direction while moving circumferentially along the tube body assembly 1 through the stirring and conveying operation. On the one hand, it can improve the passability of the battery slurry, and on the other hand, it can also make the battery slurry in the tube body assembly 1 be stirred evenly, so that the battery slurry at different positions can all contact the strong magnetic area in the magnetic field, so that the demagnetization operation is more uniform.

[0043] It can be understood that in the existing process, permanent magnet rods are generally used to demagnetize battery slurry. Since the strength of the magnetic field is different with the distance from the permanent magnet rod, the demagnetization is uneven. The battery slurry that is relatively far away from the permanent magnet rod in the pipeline is subjected to a weaker magnetic field. On the one hand, the demagnetization operation of the magnetic foreign matter in the battery slurry is not thorough. On the other hand, some of the adsorbed magnetic foreign matter may fall off under the impact of the battery slurry, causing pollution to the battery slurry and affecting the overall demagnetization effect.

[0044] The battery slurry demagnetization device in this embodiment can make the battery slurry move circumferentially while flowing axially through stirring operation, so that the battery slurry at different positions in the tube body assembly 1 can contact the strong magnetic field area generated by the magnetic ring, and the demagnetization operation is more uniform, which is beneficial to improving the overall demagnetization effect. It can also transport the battery slurry in the tube body assembly 1, which is beneficial to improving the passability of the battery slurry.

[0045] It should be noted that the batteries described in the present invention include but are not limited to lithium batteries.

[0046] In a further embodiment of the present invention, Figure 2 , Figure 3 As shown, the multiple magnetic rings of the demagnetization component 2 specifically include multiple first magnetic rings 21 and multiple second magnetic rings 22, and the first magnetic rings 21 and the second magnetic rings 22 are arranged along the axial direction of the tube body component 1. Among them, the magnetic pole direction of the first magnetic ring 21 is arranged along the axial direction of the tube body component 1, and the magnetic pole direction of the second magnetic ring 22 is arranged along the radial direction of the tube body component 1. Since the magnetic field state is adapted to the magnetic pole direction of the magnetic ring, the combination of the first magnetic ring 21 and the second magnetic ring 22 with different magnetic pole directions can strengthen the magnetic field in the tube body component 1, thereby enhancing the demagnetization ability. Specifically, the structure of the first magnetic ring 21 and the second magnetic ring 22 can be as follows Figure 4 , Figure 5 and Figure 6 In the example, through a special structural design, the magnetic pole direction of the first magnetic ring 21 is set in the axial direction, and the magnetic pole direction of the second magnetic ring 22 is set in the radial direction to meet the requirements of the demagnetization operation.

[0047] It should be noted that the number of the first magnetic ring 21 and the second magnetic ring 22 can be set according to the specific demagnetization operation requirements and the length of the tube assembly 1, and the number of the first magnetic ring 21 and the second magnetic ring 22 is at least two. Figure 3 In the example, the first magnetic ring 21 and the second magnetic ring 22 are sequentially arranged in the axial direction and arranged from one end to the other end of the pipe body assembly 1 to form a magnetic pipe structure to enhance the magnetic field strength as much as possible. In a specific implementation, the number of the first magnetic ring 21 and the second magnetic ring 22 is 100.

[0048] Furthermore, in a specific implementation, Figure 3 As shown, among the plurality of first magnetic rings 21, the magnetic poles of any two adjacent first magnetic rings 21 are in opposite directions, that is, the magnetic poles opposite to each other in the axial direction have the same polarity, for example Figure 3 In the example, any two adjacent first magnetic rings 21 are arranged with N poles facing N poles or S poles facing S poles, forming a same-pole relative arrangement. In the axial direction, a second magnetic ring 22 is arranged between any two adjacent first magnetic rings 21. The above arrangement can make the magnetic fields of all the first magnetic rings 21 uniformly and regularly arranged, which is conducive to improving the uniformity of the demagnetization operation.

[0049] In another specific implementation, Figure 3 As shown, among the plurality of second magnetic rings 22, the magnetic pole directions of any two adjacent second magnetic rings 22 are opposite, that is, the polarities in the radial direction are different, such as Figure 3 In the example, of any two adjacent second magnetic rings 22, the N pole of one second magnetic ring 22 is located radially inside and the S pole is located radially outside, while the N pole of the other second magnetic ring 22 is located radially outside and the S pole is located radially inside, forming a same-pole but different-pole arrangement. In the axial direction, a first magnetic ring 21 is arranged between any two adjacent second magnetic rings 22. The above arrangement can make the magnetic fields of all the second magnetic rings 22 uniform and regular, which is conducive to improving the uniformity of the demagnetization operation.

[0050] Preferably, if Figure 3In the example, a plurality of first magnetic rings 21 and a plurality of second magnetic rings 22 are arranged as a Halbach annular magnet array. Specifically, a plurality of first magnetic rings 21 and a plurality of second magnetic rings 22 are arranged alternately in the axial direction, that is, a second magnetic ring 22 is arranged between any two adjacent first magnetic rings 21, a first magnetic ring 21 is arranged between any two adjacent second magnetic rings 22, and the magnetic poles of any two adjacent first magnetic rings 21 are opposite, and the magnetic poles of any two adjacent second magnetic rings 22 are opposite. Through the above arrangement, the demagnetization component 2 forms a Halbach annular magnet array, and forms a magnetic pipeline structure coaxially arranged with the tube body component 1. On the one hand, the magnetic field strength in the tube body component 1 can be enhanced, and on the other hand, the magnetic field distribution in the tube body component 1 can be made more uniform, and the battery slurry at different positions in the tube body component 1 can more easily contact the strong magnetic area in the magnetic field, and the adsorption capacity of magnetic foreign matter is stronger, which can prevent the magnetic foreign matter from being washed off and contaminating the battery slurry, and can further improve the demagnetization effect, which is conducive to enhancing the battery performance.

[0051] In a further embodiment of the present invention, Figure 2 and Figure 3 As shown, the inner diameter of the first magnetic ring 21 and the inner diameter of the second magnetic ring 22 are the same, and are the same as the outer diameter of the tube assembly 1, so that the first magnetic ring 21 and the second magnetic ring 22 can be stably assembled with the tube assembly 1 to prevent the magnetic field distribution from being affected by shaking. Preferably, the inner diameter of the first magnetic ring 21 and the outer diameter of the second magnetic ring 22 are both 10 cm, and the outer diameter is both 15 cm. Correspondingly, the outer diameter of the tube assembly 1 is also 10 cm.

[0052] Furthermore, the thickness of the first magnetic ring 21 is in the range of 2 mm to 10 mm.

[0053] Furthermore, the thickness of the second magnetic ring 22 is in the range of 2 mm to 10 mm.

[0054] It should be noted that, according to specific demagnetization requirements, the first magnetic ring 21 and the second magnetic ring 22 can have the same thickness or different thicknesses. Figure 3 In the example, in the axial direction, the thickness of the first magnetic ring 21 is greater than the thickness of the second magnetic ring 22, the thickness of the first magnetic ring 21 is 10 mm, and the thickness of the second magnetic ring 22 is 5 mm.

[0055] In a further embodiment of the present invention, Figure 2 , Figure 7 and Figure 8As shown, the stirring and conveying mechanism 3 includes a screw rod 31, a connecting rod 32 and a driving joint 33. The screw rod 31 is arranged in the tube body assembly 1 and extends in the axial direction of the tube body assembly 1; the connecting rod 32 is connected to one end of the screw rod 31 in the axial direction, and the end of the connecting rod 32 away from the screw rod 31 extends out of the tube body assembly 1 in the axial direction; the driving joint 33 is connected to the end of the connecting rod 32 away from the screw rod 31. When used, the driving joint 33 can be connected to the driving mechanism in a transmission manner to transmit the power output by the driving mechanism to the screw rod 31 through the driving joint 33 and the connecting rod 32, and drive the screw rod 31 to rotate, so as to stir and convey the battery slurry in the tube body assembly 1.

[0056] It can be understood that the spiral rod 31 has a spiral structure. When the spiral rod 31 rotates, it can drive the battery slurry to move in the axial and circumferential directions at the same time, that is, it produces a spiral motion, that is, it can enable the battery slurry at different radial positions of the tube body assembly 1 to be stirred and mixed, and more evenly contact the strong magnetic area in the magnetic field. It can also promote the axial transportation of the battery slurry, prevent blockage in local areas, and improve the passability of the battery slurry in the tube body assembly 1.

[0057] Furthermore, if Figure 2 , Figure 7 and Fig. 9 As shown, the tube assembly 1 includes a support tube 11, an inlet structure 12 and an outlet structure 13. The support tube 11 is the main structure of the tube assembly 1, and adopts a cylindrical tube structure; the battery slurry can pass into the support tube 11, and the magnetic ring of the magnetic assembly 2 is sleeved on the outside of the support tube 11, so as to isolate the battery slurry from the magnetic ring through the support tube 11 to prevent secondary pollution. The feed structure 12 is connected to one end of the support tube 11 in the axial direction, and the discharge structure 13 is connected to the other end of the support tube 11 in the axial direction, so that one end of the support tube 11 connected to the feed structure 12 forms a feed end, and one end of the support tube 11 connected to the discharge structure 13 forms a discharge end; the feed structure 12 blocks the feed end of the support tube 11, and a first center hole 121 and a feed port 122 eccentrically arranged relative to the first center hole 121 are provided on the feed structure 12; the discharge structure 13 blocks the discharge end of the support tube 11, and a discharge port 131 is provided on the discharge structure 13.

[0058] When in use, the feed port 122 is connected to the feed pipeline, and the discharge port 131 is connected to the discharge pipeline. The connecting rod 32 of the stirring and conveying mechanism 3 passes through the first center hole 121 of the feed structure 12, so that the drive joint 33 can be connected to the drive mechanism outside the support tube 11. Preferably, the outer diameter of the support tube 11 is the same as the inner diameter of the magnetic ring, both of which are 10 cm, and the wall thickness of the support tube 11 is 1 mm to 5 mm; the diameter of the screw rod 31 is 3 cm to 6 cm, which can be specifically set according to the diameter of the support tube 11 and the required slurry flow rate. The diameter of the connecting rod 32 is slightly smaller than the end diameter of the screw rod 31, and the size of the drive joint 33 is set according to the size required by the matching drive mechanism.

[0059] It should be noted that the connection methods between the feed structure 12, the discharge structure 13 and the support tube 11 include but are not limited to threaded connection, lock-and-clip connection, sleeve connection or bolt connection.

[0060] Preferably, the support tube 11 is made of non-ferromagnetic material, such as aluminum, aluminum alloy, and copper, to prevent interference with the magnetic field formed by the magnetic ring and affect the magnetic field distribution and magnetic field strength.

[0061] Preferably, if Figure 2 and Figure 7 In the example in FIG. 1 , the two ends of the support tube 11 in the axial direction may be provided with a limiting structure 111 extending radially outward to axially limit the magnetic ring sleeved on the outer side of the support tube 11. The limiting structure 111 may specifically be Figure 7 The circular ring structure in the embodiment can also adopt other structural forms according to assembly requirements.

[0062] In a specific implementation, Figure 2 In the example, a boss structure 132 protruding axially outward is provided on the outer side of the discharge structure 13, the boss structure 132 is located at the center of the discharge structure 13, and adopts a truncated cone structure; the discharge port 131 is arranged on the boss structure 132, so as to utilize the trumpet-shaped space formed inside the boss structure 132 to provide a buffer space for the discharge, which can buffer and guide the battery slurry and prevent the battery slurry from being blocked at the discharge port 131.

[0063] Furthermore, if Figure 2 and Figure 7 As shown, the pipe assembly 1 further includes a sealing rubber ring 151 and a pressing member 152. The sealing rubber ring 151 is sleeved on the connecting rod 32 of the stirring and conveying mechanism 3, and at least a portion of the sealing rubber ring 151 is inserted into the first central hole 121 of the feeding structure 12 to seal the gap between the connecting rod 32 and the first central hole 121. Preferably, the sealing rubber ring 151 can be made of Figure 2 and Figure 7The structural form shown in the figure is that the two ends of the sealing rubber ring 151 in the axial direction are provided with protruding structures extending radially outward, one end of the sealing rubber ring 151 extends into the inner side of the feeding structure 12, and the other end is located outside the feeding structure 12, and the protruding structures at both ends form a snap fit with the edge of the first center hole 121 to improve the assembly stability. The pressing member 152 is sleeved on the connecting rod 32 and is located outside the feeding structure 12. The pressing member 152 presses the sealing rubber ring 151 in the axial direction to make the sealing rubber ring 151 fit tightly with the feeding structure 12, so as to prevent the battery slurry from leaking due to the loosening of the sealing rubber ring 151.

[0064] In order to ensure that the stirring and conveying mechanism 3 can rotate normally, a rotation connection can be formed between the connecting rod 32 and the pressing member 152, so that the connecting rod 32 can rotate relative to the pressing member 152. For example, a bearing structure can be provided to achieve the rotation connection between the connecting rod 32 and the pressing member 152. The pressing member 152 and the feeding structure 12 can be connected and fixed by means of screws, locks, etc., which will not be repeated here.

[0065] Furthermore, if Figure 2 and Figure 7 As shown, the tube body assembly 1 also includes a first sealing ring 141 and a second sealing ring 142. The first sealing ring 141 is arranged between the feed structure 12 and the support tube 11, and is arranged along the circumference of the support tube 11 to seal the gap between the feed structure 12 and the end surface of the support tube 11. The second sealing ring 142 is arranged between the discharge structure 13 and the support tube 11, and is arranged along the circumference of the support tube 11 to seal the gap between the discharge structure 13 and the end surface of the support tube 11. In practical applications, corresponding assembly grooves can be machined on the end surfaces at both ends of the support tube 11 and on the feed structure 12 and the discharge structure 13 to provide assembly space for the first sealing ring 141 and the second sealing ring 142 during assembly.

[0066] The battery slurry demagnetization device in the above embodiment of the utility model can be arranged according to the specific production process in production applications. The battery slurry demagnetization device can be specifically arranged in a horizontal manner, for example Figure 1 The state shown in the figure can of course be arranged longitudinally (i.e. arranged in the axial direction vertically) or inclined as required. Since the battery slurry demagnetization device is provided with a stirring and conveying mechanism, the battery slurry can be effectively conveyed regardless of the arrangement, thereby preventing material blockage.

[0067] In an embodiment of the second aspect of the utility model, a battery production device is provided, including the battery slurry demagnetization device in any of the embodiments of the first aspect. The battery slurry required for the battery is passed into the tube body assembly 1 of the battery slurry demagnetization device, and the battery slurry in the tube body assembly 1 is stirred and conveyed by using the stirring and conveying mechanism 3 of the battery slurry demagnetization device, so that the battery slurry can move along the axial and circumferential directions of the tube body assembly 1 at the same time, and the battery slurry is demagnetized by using the magnetic field formed by the magnetic ring of the demagnetization assembly 2. Among them, the stirring and conveying mechanism 3 can stir the battery slurry evenly, so that the battery slurry at different positions can contact the strong magnetic area in the magnetic field, so that the demagnetization operation is more uniform, and at the same time it can also improve the passability of the battery slurry and prevent blockage.

[0068] The battery slurry after the demagnetization operation of the battery production equipment in this embodiment can effectively remove the magnetic foreign matter therein, and can effectively improve the battery performance.

[0069] It should be noted that, according to actual production needs, the battery production equipment may also include a feed pipeline, a discharge pipeline, a drive mechanism, etc.

[0070] In addition, the battery production equipment in this embodiment also has all the beneficial effects of the battery slurry demagnetization device in any embodiment of the first aspect mentioned above, which will not be repeated here.

[0071] The basic principle of the present invention is described above in conjunction with specific embodiments. However, it should be pointed out that the advantages, strengths, effects, etc. mentioned in the present invention are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present invention. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not limitation, and the above details do not limit the present invention to being implemented by adopting the above specific details.

[0072] The block diagrams of the devices, apparatuses, equipment and systems involved in the present utility model are only illustrative examples and are not intended to require or imply that they must be connected, arranged and configured in the manner shown in the block diagrams. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment and systems can be connected, arranged and configured in any manner. Words such as "including", "comprising", "having" and the like are open words, referring to "including but not limited to" and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to" and can be used interchangeably with them. It should also be noted that in the apparatus and equipment of the present utility model, each component can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent schemes of the present utility model.

[0073] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize some variations, modifications, changes, additions and sub-combinations thereof. The above description of the disclosed aspects is provided to enable any technician in the field to make or use the utility model. Various modifications to these aspects are very obvious to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of the utility model. Therefore, the utility model is not intended to be limited to the aspects shown herein, but in accordance with the widest range consistent with the principles and novel features of this utility model.

[0074] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery slurry demagnetization device, characterized in that: include: A tube assembly (1) for introducing battery slurry; A demagnetization component (2) is sleeved on the outside of the tube component (1), and the demagnetization component (2) comprises a plurality of magnetic rings; The stirring and conveying mechanism (3) is arranged inside the tube body component (1).

2. The battery slurry demagnetization device according to claim 1, characterized in that: The demagnetization component (2) comprises a plurality of first magnetic rings (21) and a plurality of second magnetic rings (22) arranged along the axial direction of the tube component (1); The magnetic pole direction of the first magnetic ring (21) is arranged along the axial direction of the tube body assembly (1), and the magnetic pole direction of the second magnetic ring (22) is arranged along the radial direction of the tube body assembly (1).

3. The battery slurry demagnetization device according to claim 2, characterized in that: The magnetic poles of any two adjacent first magnetic rings (21) are in opposite directions, and a second magnetic ring (22) is provided between any two adjacent first magnetic rings (21); and / or The magnetic poles of any two adjacent second magnetic rings (22) are in opposite directions, and one of the first magnetic rings (21) is provided between any two adjacent second magnetic rings (22).

4. The battery slurry demagnetization device according to claim 3, characterized in that: The plurality of first magnetic rings (21) and the plurality of second magnetic rings (22) are arranged as a Halbach annular magnet array.

5. The battery slurry demagnetization device according to claim 2, characterized in that: The inner diameter of the first magnetic ring (21) and the inner diameter of the second magnetic ring (22) are both the same as the outer diameter of the tube assembly (1); and / or The thickness of the first magnetic ring (21) is in the range of 2 mm to 10 mm; and / or The thickness of the second magnetic ring (22) is in the range of 2 mm to 10 mm.

6. The battery slurry demagnetization device according to any one of claims 1 to 5, characterized in that: The stirring and conveying mechanism (3) comprises: A spiral rod (31) is axially arranged inside the tube body assembly (1); A connecting rod (32) connected to one end of the spiral rod (31) in the axial direction, and one end of the connecting rod (32) away from the spiral rod (31) extends out of the tube body assembly (1) in the axial direction; A driving joint (33) is connected to an end of the connecting rod (32) away from the spiral rod (31).

7. The battery slurry demagnetization device according to claim 6, characterized in that: The pipe body assembly (1) comprises: Support tube (11); A feed structure (12) connected to one end of the support tube (11) in the axial direction, the feed structure (12) being provided with a first center hole (121) and a feed port (122), the feed port (122) being eccentrically arranged relative to the first center hole (121); A discharge structure (13) connected to the other end of the support tube (11) in the axial direction, and a discharge port (131) is provided on the discharge structure (13); Wherein, a plurality of magnetic rings are sleeved on the outer side of the support tube (11).

8. The battery slurry demagnetization device according to claim 7, characterized in that: The pipe body assembly (1) further comprises: A sealing rubber ring (151) is sleeved on the connecting rod (32), and at least a portion of the sealing rubber ring (151) is located in the first central hole (121); The pressing member (152) is sleeved on the connecting rod (32) and presses the sealing rubber ring (151) in the axial direction.

9. The battery slurry demagnetization device according to claim 7, characterized in that: The pipe body assembly (1) further comprises: A first sealing ring (141) is arranged between the feed structure (12) and the support tube (11), and is arranged along the circumference of the support tube (11); The second sealing ring (142) is arranged between the discharge structure (13) and the support tube (11), and is arranged along the circumference of the support tube (11).

10. A battery production device, characterized in that: include: A battery slurry demagnetization device as claimed in any one of claims 1 to 9.

Images