Slurry recovery apparatus and battery production system

Abstract

Embodiments of the present application provide a slurry recovery device and a battery production system. The slurry recovery device is used for processing recovered slurry with magnetic impurities. The slurry recovery device comprises a viscosity processing device and an impurity removal device. The viscosity processing device comprises a processing cavity and a processing assembly. The processing assembly is arranged in the processing cavity and is used for reducing the viscosity of the recovered slurry in the processing cavity. The impurity removal device comprises a magnetic removal cavity and a magnetic member. The magnetic removal cavity is in communication with the processing cavity and receives the slurry processed by the viscosity processing device. The magnetic member is arranged in the magnetic removal cavity and is used for adsorbing the magnetic impurities in the recovered slurry in the magnetic removal cavity. The present application is beneficial to reducing the production cost of the battery monomer.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more specifically, to a slurry recycling device and a battery production system. Background Technology

[0002] Battery cells are widely used in electronic devices such as mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, and power tools, etc.

[0003] In the development of battery technology, how to reduce the production cost of individual battery cells is a technical problem that urgently needs to be solved. Utility Model Content

[0004] In view of the above problems, this application provides a slurry recycling device and a battery production system, which helps to reduce the production cost of battery cells.

[0005] In a first aspect, this application provides a slurry recovery device for recovering slurry containing magnetic impurities. The slurry recovery device includes a viscosity treatment device and a purification device. The viscosity treatment device includes a treatment chamber and a treatment assembly, the treatment assembly being disposed in the treatment chamber to reduce the viscosity of the recovered slurry within the treatment chamber. The purification device includes a demagnetizing chamber and a magnetic element, the demagnetizing chamber being connected to the treatment chamber and receiving the slurry processed by the viscosity treatment device. The magnetic element is disposed within the demagnetizing chamber to adsorb magnetic impurities in the recovered slurry within the demagnetizing chamber.

[0006] In some embodiments of the first aspect, by first reducing the viscosity of the recycled slurry and increasing its fluidity, the possibility of the recycled slurry adhering to the magnetic component is reduced. Then, the magnetic component adsorbs magnetic impurities in the recycled slurry, thereby reducing the content of metal impurities in the recycled slurry so that the content of metal impurities in the recycled slurry meets the production standards, so as to facilitate the recycling and reuse of the recycled slurry and reduce the production cost of the battery cell.

[0007] In some embodiments, the demagnetizing cavity includes a plurality of openings, including a first opening, which is used to allow recycled slurry in the processing cavity to flow into the demagnetizing cavity. Along a first direction and on the same projection plane, the projection of the magnetic element is located outside the projection of the first opening, and the first direction is parallel to the axial direction of the first opening.

[0008] In the above technical solution, since the first opening is used to receive the recycled slurry after the viscosity treatment device has processed it, the flow direction of the recycled slurry after entering the demagnetization chamber can be parallel to the placement direction of the magnetic component (i.e. the flow direction is parallel to the first direction), thereby reducing the possibility of the recycled slurry adhering to the magnetic component and reducing the possibility of the magnetic component blocking the first opening due to excessive magnetic impurities. This reduces the maintenance frequency of the impurity removal device and improves the recycling efficiency.

[0009] In some embodiments, the number of magnetic elements includes multiple magnetic elements, which are spaced apart and arranged in the same projection plane. The projections of the multiple magnetic elements along the first direction surround the projection of the first opening along the first direction.

[0010] In the above technical solution, by setting multiple magnetic components, the flexibility of their arrangement and the flexibility and precision of magnetic field strength control are improved. The arrangement of multiple magnetic components, with their central region overlapping the area where the recycled slurry enters the demagnetization cavity, allows the magnetic fields of these components to superimpose and merge in the central region. This creates a high-strength and uniformly distributed magnetic field cavity, ensuring that magnetic impurities in the recycled slurry will experience sufficiently strong magnetic force whenever they pass through the cavity. This improves the reliability of the magnetic components in adsorbing magnetic impurities and enhances the thoroughness of demagnetization.

[0011] In some embodiments, the plurality of openings includes two first openings disposed opposite to each other along a first direction, the two first openings being respectively connected to the processing chamber, and at least one of the two first openings being used to allow the recycled slurry in the processing chamber to flow into the demagnetizing chamber.

[0012] In the above technical solution, the above settings help to improve the flexibility of the slurry flow direction design, thereby increasing the applicability to different types of recycled slurry.

[0013] In some embodiments, within the same projection plane, the projections of the two first openings along the first direction at least partially overlap.

[0014] In the above technical solution, with the above configuration, when both first openings are used to allow the recycled slurry in the processing chamber to flow into the demagnetizing chamber, it is beneficial to increase the collision area of ​​the opposing feeds, further increase the diffusion uniformity of the recycled slurry, and improve the demagnetization efficiency; when one of the two openings is used to allow the recycled slurry in the processing chamber to flow into the demagnetizing chamber, the other of the two openings serves as a connection port for transporting the demagnetized slurry to the processing chamber, so that the recycled slurry circulates between the processing chamber and the demagnetizing chamber, increasing the number of times the recycled slurry is demagnetized and improving the thoroughness of demagnetization.

[0015] In some embodiments, the impurity removal device further includes a tank, the tank including a demagnetizing cavity, the magnetic component including a magnetic body and a connecting portion connected to each other, the magnetic body being disposed inside the demagnetizing cavity, and the connecting portion being detachably connected to the tank.

[0016] In the above technical solution, by detachably connecting the connecting part and the tank, the magnetic body can be removed from the demagnetizing chamber after a period of use, so as to remove the magnetic impurities attached to the magnetic body. This helps to reduce the maintenance difficulty of the magnetic parts and improve the demagnetizing efficiency.

[0017] In some embodiments, the slurry recovery equipment further includes a circulation component, the processing chamber being connected to the demagnetizing chamber via the circulation component, and the circulation component being capable of driving the recovered slurry to circulate between the processing chamber and the demagnetizing chamber.

[0018] In the above technical solution, by setting up a circulation component, the number of times the recycled slurry is demagnetized in the demagnetization chamber is increased, thereby further reducing the content of magnetic impurities in the recycled slurry and improving the recycling quality of the recycled slurry.

[0019] In some embodiments, the impurity removal device includes a plurality of demagnetizing groups, each demagnetizing group including a demagnetizing cavity and a magnetic element located within the demagnetizing cavity, and the demagnetizing cavities of the plurality of demagnetizing groups are connected in series and / or in parallel to the processing cavity.

[0020] The above technical solution is conducive to improving the flexibility of the demagnetizing group design, thereby increasing the applicability of the slurry recovery equipment.

[0021] In some embodiments, each demagnetizing group includes multiple demagnetizing cavities connected in series and / or in parallel.

[0022] The above technical solution is conducive to improving the flexibility of the demagnetizing cavity design within the demagnetizing group, thereby increasing the applicability of the slurry recovered by the slurry recovery equipment.

[0023] In some embodiments, the slurry recovery equipment further includes a feeding device, which includes a feeding chamber that communicates with a processing chamber, and a filter element is provided between the feeding chamber and the processing chamber.

[0024] In the above technical solution, the filter element can perform preliminary filtration of magnetic impurities in the recycled slurry, thereby reducing the possibility of larger impurities clogging the circulation pipeline, reducing maintenance frequency, and improving the overall impurity removal efficiency of the slurry recycling equipment.

[0025] In some embodiments, the filter element includes at least one of a filter screen and a filter pump.

[0026] In the above technical solution, the above settings facilitate the preliminary filtration of the recycled slurry, improve the overall demagnetization efficiency of the slurry recycling equipment, reduce the cost of using the filter elements, and increase the design flexibility of the filter elements.

[0027] Secondly, this application provides a battery production system, including electrode production equipment and slurry recycling equipment according to any embodiment of the first aspect. The electrode production equipment includes a demagnetizing device and a coating device. The demagnetizing device is used to demagnetize the slurry to form a demagnetized slurry and a recycled slurry. The coating device is used to coat the demagnetized slurry onto the surface of the current collector of the electrode. The slurry recycling equipment is used to recycle the recycled slurry.

[0028] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0030] Figure 1 Schematic diagram of a battery production system provided for some embodiments of this application; Figure 2 This is a schematic diagram of the structure of a slurry recovery device provided in some embodiments of this application; Figure 3 This is a top view of the impurity removal device in a slurry recovery apparatus provided in some embodiments of this application; Figure 4 A schematic diagram of the axial structure of the impurity removal device in the slurry recovery equipment provided in some embodiments of this application; Figure 5 Schematic diagram of the slurry recovery equipment provided in some embodiments of this application; Figure 6 A schematic diagram of the axial structure of the impurity removal device in a slurry recovery device provided in some embodiments of this application.

[0031] The reference numerals in the accompanying drawings for the specific embodiments are as follows: 100. Demagnetizing device; 200. Coating device; 300. Slurry recovery equipment; 10. Viscosity treatment device; 11. Treatment chamber; 12. Stirring device; 20. Impurity removal device; 21. Demagnetizing chamber; 211. Inlet; 212. Outlet; 22. Magnetic component; 221. Magnetic body; 222. Connecting part; 23. Tank; G. Demagnetizing assembly; 30. Circulation component; 31. Circulation pipeline; 311. First pipeline; 312. Second pipeline; 313. Third pipeline; 32. Drive unit; 33. Recycling pipeline; 40. Feeding device; 41. Feeding chamber; 50. Filter element; 51. Filter screen; 52. Filter pump; 61. First valve; 62. Second valve; 63. Third valve; X, the first direction; Y, the second direction. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0034] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0035] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" 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 direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0037] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0038] In this application, "multiple" means two or more (including two).

[0039] Currently, judging from market trends, the application of battery devices is becoming increasingly widespread. Battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely applied in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of battery device applications, market demand is also constantly increasing.

[0040] In this embodiment of the application, the battery cell can be a secondary battery, which refers to a battery cell that can be recharged to activate the active materials and continue to be used after the battery cell has been discharged.

[0041] The battery cell can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0042] In the production process of electrode sheets, electrode slurry needs to be coated onto the current collector surface of the electrode sheet using coating equipment to form a coating layer. After the slurry is prepared, it needs to undergo demagnetization treatment. Demagnetization treatment can reduce the presence of impurities such as iron filings and magnetic impurities in the slurry, reduce the possibility of magnetic impurity contamination of electrode materials and other processes, improve the quality and purity of the slurry, and improve the reliability and efficiency of the battery cell manufacturing process.

[0043] Demagnetization typically involves placing magnetic rods in the slurry pipeline to adsorb metal particles in the slurry. However, due to the high viscosity of the slurry, some slurry without metal particles adheres to the magnetic rods during the adsorption process. When cleaning the magnetic rods, this portion of qualified battery slurry and metal particles is also discarded, leading to an increase in the production cost of battery cells.

[0044] Based on the above-mentioned technical problems, this application provides a slurry recycling device. By first reducing the viscosity of the recycled slurry and increasing its fluidity, the device reduces the possibility of the recycled slurry adhering to magnetic components. Then, the magnetic components adsorb magnetic impurities in the recycled slurry, thereby reducing the content of metal impurities in the recycled slurry. This ensures that the content of metal impurities in the recycled slurry meets production standards, facilitating the recycling and reuse of the slurry and reducing the production cost of battery cells.

[0045] Figure 1 This is a schematic diagram of a battery production system provided for some embodiments of this application.

[0046] Please see Figure 1 According to some embodiments of this application, this application provides a battery production system, which includes electrode production equipment and slurry recycling equipment 300. The electrode production equipment includes a demagnetizing device 100 and a coating device 200. The demagnetizing device 100 is used to demagnetize the slurry to form a demagnetized slurry and a recycled slurry. The coating device 200 is used to coat the demagnetized slurry onto the surface of the current collector of the electrode. The slurry recycling equipment 300 is used to recycle the recycled slurry.

[0047] The electrode production process typically includes the following steps: First, a slurry is prepared by mixing and stirring active materials, conductive agents, and binders in a solvent to form a uniform slurry. Then, a demagnetization treatment is performed, allowing the slurry to flow through a demagnetizing device 100 to remove magnetic impurities. Finally, coating is performed by applying the demagnetized slurry to the surface of the current collector, followed by drying to form the electrode. For ease of understanding, the slurry used for coating the current collector surface after demagnetization is called demagnetizing slurry, and the slurry adhering to the demagnetizing device 100 and discarded is called recycled slurry. The slurry recycling equipment 300 in this embodiment is used to re-demagnetize and recycle the discarded slurry from the demagnetizing device 100.

[0048] Optionally, the electrode includes a positive electrode and a negative electrode.

[0049] For example, the positive electrode includes a positive current collector and a positive active material layer disposed on the surface of the positive current collector. The positive active material layer is formed by preparing a positive electrode slurry. Optionally, the slurry recovery device 300 in this embodiment can recover the slurry that has been demagnetized and discarded from the positive electrode slurry.

[0050] For example, the negative electrode sheet includes a negative current collector and a negative active material layer disposed on the surface of the negative current collector. The negative active material layer is formed by preparing a negative electrode slurry. Optionally, the slurry recovery device 300 in this embodiment can recover the slurry that has been demagnetized and discarded from the negative electrode slurry.

[0051] Optionally, the slurry may include a positive electrode slurry and a negative electrode slurry.

[0052] For example, the positive electrode slurry includes a positive electrode active material, a positive electrode conductive agent, a positive electrode binder, and a positive electrode solvent.

[0053] For example, the negative electrode slurry includes a negative electrode active material, a negative electrode conductive agent, a negative electrode binder, and a negative electrode solvent.

[0054] Figure 2 This is a schematic diagram of the slurry recovery equipment provided in some embodiments of this application.

[0055] Please refer to the following: Figure 1 and Figure 2 According to some embodiments of this application, this application provides a slurry recovery device for recovering slurry containing magnetic impurities. The slurry recovery device includes a viscosity treatment device 10 and a removal device 20. The viscosity treatment device 10 includes a treatment chamber 11 and a treatment assembly. The treatment assembly is disposed in the treatment chamber 11 and is used to reduce the viscosity of the recovered slurry in the treatment chamber 11. The removal device 20 includes a demagnetizing chamber 21 and a magnetic element 22. The demagnetizing chamber 21 is connected to the treatment chamber 11 and receives the slurry processed by the viscosity treatment device 10. The magnetic element 22 is disposed in the demagnetizing chamber 21 and is used to adsorb magnetic impurities in the recovered slurry in the demagnetizing chamber.

[0056] Slurry recovery equipment can remove magnetic impurities from recycled slurry, ensuring that the magnetic impurity content is completely removed or meets production standards. Recycled slurry meeting production standards can then be collected and transported back to slurry production equipment for reuse.

[0057] The viscosity treatment device 10 includes a treatment chamber 11 and a treatment assembly. The treatment chamber 11 can be used to contain recycled slurry and provide processing space for the treatment assembly to reduce the viscosity of the recycled slurry. This application embodiment does not limit the shape or size of the treatment chamber 11, as long as it can provide sufficient processing space.

[0058] The processing component is used to reduce the viscosity of the recycled slurry. The processing component may include a diluent. After the diluent is mixed with the recycled slurry, the diluent can reduce the viscosity of the recycled slurry by chemical solvation or by physical dilution.

[0059] For example, the diluent reduces the viscosity of the recycled slurry through chemical solvation. The diluent can dissolve the binder in the recycled slurry, reducing the aggregates formed by the binder and increasing the free space for movement of solid particles (such as active materials and conductive agents) in the recycled slurry, thereby reducing the viscosity of the recycled slurry. Optionally, the diluent includes a solvent, and the solvent is of the same type as the solvent in the recycled slurry. Understandably, when the recycled slurry is a positive electrode slurry, the diluent may include a positive electrode solvent, such as N-methylpyrrolidone (NMP). When the recycled slurry is a negative electrode slurry, the diluent may include a negative electrode solvent, such as deionized water. Optionally, the mixing ratio of the recycled slurry and the diluent can be in the range of 1:0.8 to 3:2. Further, the mixing ratio of the recycled slurry and the diluent can be in the range of 1:1.1 to 13:10. It should be noted that when the processing component includes the diluent, the processing component being placed in the processing chamber can be understood as the processing component (diluent) being added to the processing chamber, rather than being installed in the processing chamber.

[0060] Optionally, the processing assembly may also include a stirring device 12 disposed within the processing chamber 11. The stirring device 12 can fully mix the diluted material and the recycled slurry to keep the mixed slurry in a suspended state, thereby increasing the dispersion uniformity of the mixed slurry and maintaining its suspended state.

[0061] The impurity removal device 20 includes a demagnetizing chamber 21, which is connected to the processing chamber 11. When the viscosity of the recycled slurry in the processing chamber 11 decreases, the recycled slurry can flow into the demagnetizing chamber 21, where magnetic components 22 adsorb the magnetic impurities in the slurry after the viscosity reduction. The likelihood of the slurry adhering to the magnetic components 22 after the viscosity reduction is reduced, thus decreasing the possibility of the recycled slurry being discarded again after adhering to the magnetic components 22, thereby improving the recycling rate. Optionally, the recycled slurry adhering to the magnetic components 22 can be collected and reintroduced into the processing chamber 11 for repeated viscosity reduction and demagnetization processes, thereby achieving recycling and reuse.

[0062] Optionally, the demagnetizing chamber 21 and the processing chamber 11 can be unidirectionally connected, meaning that the recovered slurry with reduced viscosity in the processing chamber 11 can only flow into the demagnetizing chamber 21. Alternatively, the demagnetizing chamber 21 and the processing chamber 11 can be bidirectionally connected, meaning that the recovered slurry with reduced viscosity in the processing chamber 11 can flow into the demagnetizing chamber 21 for demagnetization, and the demagnetized recovered slurry can flow back into the processing chamber 11.

[0063] Optionally, the number of magnetic elements 22 may include one or more.

[0064] Optionally, the material of the magnetic component 22 may include iron(III) oxide (Fe3O4) or rare earth permanent magnet materials (i.e., materials formed from rare earth metal elements and transition elements). Optionally, the surface of the magnetic component 22 may be provided with a corrosion-resistant layer. For example, the surface of the magnetic component 22 may be provided with a chromium (Cr) plating.

[0065] The shape of the magnetic component 22 is not limited in this application embodiment. For example, the shape of the magnetic component 22 can be a cylinder, a cuboid, or other shapes.

[0066] Optionally, the magnetic component 22 can form a demagnetizing channel in the demagnetizing cavity 21, through which the recycled slurry flows.

[0067] In the slurry recycling equipment provided in this application embodiment, the viscosity of the recycled slurry is first reduced to increase its fluidity, thereby reducing the possibility of the recycled slurry adhering to the magnetic component 22. Then, the magnetic component 22 adsorbs magnetic impurities in the recycled slurry, thereby reducing the content of metal impurities in the recycled slurry. This ensures that the content of metal impurities in the recycled slurry meets the production standards, facilitating the recycling and reuse of the recycled slurry and reducing the production cost of battery cells.

[0068] In other examples, the impurity removal device 20 may also include an impurity removal chamber, for example, an impurity removal chamber that can separate and collect materials that reduce the viscosity of the recycled slurry from the recycled slurry.

[0069] Figure 3 This is a top view of the impurity removal device in a slurry recovery apparatus provided in some embodiments of this application. Figure 4 This is a schematic diagram of the axonal structure of the impurity removal device in a slurry recovery device provided in some embodiments of this application.

[0070] Please see Figures 2 to 4 In some optional embodiments, the demagnetizing cavity 21 includes a plurality of openings, including a first opening, which is used to allow the recycled slurry in the processing cavity 11 to flow into the demagnetizing cavity 21. Along a first direction and on the same projection plane, the projection of the magnetic element 22 is located outside the projection of the first opening, and the first direction X is parallel to the axial direction of the first opening.

[0071] Optionally, the multiple openings may include one or more first openings.

[0072] The first opening refers to the structure inside the demagnetizing cavity that is used to communicate with the outside world. In this application embodiment, the shape and size of the opening are not limited, as long as the recovered slurry in the processing cavity can flow into the demagnetizing cavity.

[0073] The first direction X is parallel to the axial direction of the first opening, where the axial direction of the first opening refers to the direction of the central axis through which the opening structure passes or extends, and the first direction X is parallel to this central axis direction.

[0074] Along the first direction X and on the same projection plane, the projection of the magnetic element 22 is located outside the projection of the first opening. In other words, the projection of the magnetic element 22 onto the first plane along the first direction is located outside the projection of the first opening onto the first plane along the first direction. Here, "outside" means that the projection of the magnetic element onto the first plane and the projection of the first opening onto the first plane are spaced apart. Optionally, the projection of the magnetic element onto the first plane can be arranged around at least a portion of the circumference of the projection of the first opening onto the first plane. The first plane is a plane perpendicular to the first direction. Since the first opening is for the recovery slurry in the processing chamber 11, the flow direction of the recovery slurry after entering the demagnetizing chamber 21 can be parallel to the placement direction of the magnetic element 22 (i.e., the flow direction is parallel to the first direction X), thereby reducing the possibility of the recovery slurry adhering to the magnetic element 22, and at the same time reducing the possibility of the magnetic element 22 clogging the first opening due to excessive magnetic impurities, thereby reducing the maintenance frequency of the impurity removal device 20 and improving the recovery efficiency.

[0075] like Figure 3 As shown, in some optional embodiments, the number of magnetic elements 22 includes multiple magnetic elements 22, which are spaced apart. In the same projection plane, the projections of multiple magnetic elements 22 along the first direction X are arranged around the projection of the first opening along the first direction X.

[0076] For example, within the same projection plane, the projections of multiple magnetic elements 22 along the first direction X are located around the projection of the first opening in the first direction X, and are spaced apart. Optionally, the line connecting the projection centers of the multiple magnetic elements 22 along the first direction X can form a circle, an arc, a wave, or other shape.

[0077] This embodiment of the application, by setting multiple magnetic components 22, improves the flexibility of their arrangement and the flexibility and precision of magnetic field strength control. By arranging multiple magnetic components 22 as described above, their central region overlaps with the region where the recycled slurry enters the demagnetizing cavity 21. The magnetic fields of the multiple magnetic components 22 are superimposed and merged in the central region, forming a high-strength and uniformly distributed magnetic field cavity. This ensures that magnetic impurities in the recycled slurry will experience sufficiently strong magnetic force when passing through any position within the magnetic field cavity, thereby improving the reliability of the magnetic components 22 in adsorbing magnetic impurities and enhancing the thoroughness of demagnetization.

[0078] Figure 5 This is a schematic diagram of the structure of a slurry recovery device provided in some embodiments of this application. Figure 6 A schematic diagram of the axial structure of the impurity removal device in a slurry recovery device provided in some embodiments of this application.

[0079] Please refer to the following: Figure 2 , Figures 4 to 6 In some alternative embodiments, the plurality of openings includes two first openings disposed opposite to each other along a first direction X, the two first openings being respectively connected to the processing chamber 11, and at least one of the two first openings being used to allow the recycled slurry in the processing chamber 11 to flow into the demagnetizing chamber 21.

[0080] Optionally, the first direction X is parallel to the vertical direction.

[0081] In some examples, one of the two first openings is used to allow the recycled slurry in the processing chamber 11 to flow into the demagnetizing chamber 21.

[0082] For example, such as Figure 2 and Figure 4 As shown, the two first openings can be inlet 211 and outlet 212, respectively.

[0083] For example, the recycled slurry with reduced viscosity after being processed in the processing chamber 11 can enter the demagnetizing chamber 21 through the inlet 211. After passing through the magnetic element 22, the magnetic element 22 adsorbs magnetic impurities in the recycled slurry to demagnetize it. The demagnetized recycled slurry can then flow back into the processing chamber 11 through the outlet 212, allowing the recycled slurry to circulate between the processing chamber 11 and the demagnetizing chamber 21, thereby performing multiple demagnetizations. Optionally, the recycled slurry can flow from top to bottom into the demagnetizing chamber 21, i.e., the inlet 211 of the demagnetizing chamber 21 is located on the vertically upward side of the demagnetizing chamber 21, and the outlet 212 of the demagnetizing chamber 21 is located on the vertically downward side of the demagnetizing chamber 21. Alternatively, the recycled slurry can flow from bottom to top into the demagnetizing chamber 21, i.e., the inlet 211 of the demagnetizing chamber 21 is located on the vertically downward side of the demagnetizing chamber 21, and the outlet 212 of the demagnetizing chamber 21 is located on the vertically upward side of the demagnetizing chamber 21.

[0084] In some examples, both first openings are used to allow the recycled slurry in the processing chamber 11 to flow into the demagnetizing chamber 21.

[0085] Optional. For example... Figure 5 and Figure 6 As shown, the two first openings can be two inlets 211. Optionally, the demagnetizing cavity 21 can also have an outlet 212, which can be located on one side of the demagnetizing cavity 21 along the first direction X, or on one side of the demagnetizing cavity 21 along the second direction Y. The first direction X and the second direction Y are intersecting.

[0086] For example, the recycled slurry with reduced viscosity after being processed by the processing chamber 11 can enter the demagnetizing chamber 21 through two inlets 211. After passing through the magnetic element 22, the slurry with reduced viscosity adsorbs magnetic impurities in the recycled slurry to demagnetize it. The demagnetized recycled slurry can flow out through the outlet 212, allowing the recycled slurry to enter the demagnetizing chamber 21 from two opposite directions. The recycled slurry will collide, agitate, and change direction, allowing it to fully diffuse into all areas of the demagnetizing chamber 21. At the same time, the turbulence and mixing generated by the opposing feed can disrupt laminar flow, increasing the probability that all the recycled slurry and its contained magnetic impurities approach the magnetic element 22 at close range, thereby improving demagnetizing efficiency. Optionally, the outlet 212 can be connected to the processing chamber 11. The outlet 212 can also be connected to other devices, such as a collection device. Optionally, the space between the two inlets 211 can be connected or completely separated.

[0087] It is understandable that, within the same projection plane, the two first openings can at least partially overlap in projection along the first direction X, or they can be spaced apart in projection along the first direction X.

[0088] In these alternative embodiments, the above-described configuration facilitates greater flexibility in the design of the slurry flow direction, thereby expanding its applicability to different types of recycled slurries.

[0089] Please continue reading. Figure 6 In some alternative embodiments, the projections of the two first openings along the first direction X are at least partially overlapping within the same projection plane.

[0090] In some examples, the projection of one of the two first openings onto the first plane along the first direction X coincides with the projection of the other onto the first plane along the first direction X; in other examples, the projection of one of the two openings onto the first plane along the first direction X lies within the projection of the other onto the first plane along the first direction X; in still other examples, a portion of the projection of one of the two openings onto the first plane along the first direction X overlaps with a portion of the projection of the other onto the first plane along the first direction X.

[0091] In this embodiment, the above-described configuration allows for increased collision area between opposing feeds when both openings are used to allow the recycled slurry from the processing chamber to flow into the demagnetizing chamber, thereby increasing the uniformity of the recycled slurry's diffusion and improving demagnetization efficiency. When one of the two openings is used to allow the recycled slurry from the processing chamber to flow into the demagnetizing chamber, the other opening serves as a connection port for transporting the demagnetized slurry to the processing chamber 11, allowing the recycled slurry to circulate between the processing chamber 11 and the demagnetizing chamber 21, increasing the number of times the recycled slurry is demagnetized and improving the thoroughness of demagnetization.

[0092] Please see Figure 4 and Figure 6 In some optional embodiments, the impurity removal device 20 further includes a tank 23, which includes a demagnetizing cavity 21. The magnetic component 22 includes a magnetic body 221 and a connecting part 222 connected to each other. The magnetic body 221 is disposed in the demagnetizing cavity 21, and the connecting part 222 is detachably connected to the tank 23.

[0093] Optionally, the tank body 23 includes multiple walls that enclose a demagnetizing cavity 21.

[0094] Optionally, the magnetic body 221 and the connecting portion 222 can be connected along a first direction X. The connecting portion 222 is detachably connected to at least one side of the tank 23 along the first direction X. For example, there is one connecting portion 222, located on one side of the magnetic body 221 along the first direction X. Alternatively, there are two connecting portions 222, located on opposite sides of the magnetic body 221 along the first direction X. Of course, the magnetic body 221 and the connecting portion 222 can also be connected along a second direction Y. This application embodiment does not limit the connection orientation of the magnetic body 221 and the connecting portion 222, as long as the magnetic body 221 and the connecting portion 222 are connected and the connecting portion 222 is detachably connected to the tank 23.

[0095] A magnetic body 221 is disposed within the demagnetizing cavity 21. The magnetic body 221 is used to adsorb magnetic impurities in the recycled slurry. The magnetic body 221 can extend along the first direction X. Optionally, the magnetic body 221 can be a magnetic rod.

[0096] Optionally, the connecting part 222 can be detachably connected to the tank body 23 by means of bolt connection, snap-fit ​​connection or other means.

[0097] Optionally, the connecting part 222 can be detachably connected to the wall part where the first opening is provided.

[0098] In these alternative embodiments, by detachably connecting the connecting part 222 and the tank body 23, the magnetic component 22 can be removed from the demagnetizing cavity 21 by disassembly after a period of use, so as to remove the magnetic impurities attached to the magnetic component 221. This helps to reduce the maintenance difficulty of the magnetic component 22 and improve the demagnetizing efficiency.

[0099] Please continue reading. Figure 2 and Figure 5 In some alternative embodiments, the slurry recovery device further includes a circulation component 30, through which the processing chamber 11 is connected to the demagnetizing chamber 21, and the circulation component 30 is at least capable of driving the recovered slurry to circulate between the processing chamber 11 and the demagnetizing chamber 21.

[0100] Optionally, the circulation assembly 30 may include a circulation conduit 31. The circulation conduit 31 connects the processing chamber 11 and the demagnetizing chamber 21. Further, the circulation assembly 30 may also include a drive member 32, which drives the slurry in the circulation conduit 31 to flow between the processing chamber 11 and the demagnetizing chamber 21. Optionally, the drive member 32 may include a pneumatic pump.

[0101] Optionally, such as Figure 2 As shown, when only one of the two first openings is used to allow the recycled slurry in the processing chamber to flow into the demagnetizing chamber, the circulation pipeline 31 may include two parts, one part of which connects one opening of the processing chamber 11 and the demagnetizing chamber 21, and the other part connects the other opening of the processing chamber 11 and the demagnetizing chamber 21.

[0102] Optionally, such as Figure 5 As shown, when both openings are used to allow the recycled slurry in the processing chamber to flow into the demagnetizing chamber, the demagnetizing chamber 21 is also provided with an outlet 212. The circulation pipeline 31 may include three parts (e.g., a first pipeline 311, a second pipeline 312, and a third pipeline 313). The first pipeline 311 connects the processing chamber 11 and one opening of the demagnetizing chamber 21 (that is, the inlet 211 of the demagnetizing chamber 21). The second pipeline 312 connects the processing chamber 11 and the other opening of the demagnetizing chamber 21 (that is, the other inlet 211 of the demagnetizing chamber 21). The third pipeline 313 connects the processing chamber 11 and the outlet 212.

[0103] Optionally, the cycle time can be in the range of 6-12 hours. Further, the cycle time can be in the range of 6-8 hours.

[0104] Optionally, the circulation component 30 may further include a recovery pipeline 33 connected to the circulation pipeline 31. A first valve 61 may be provided between the recovery pipeline 33 and the circulation pipeline 31. When the recovered slurry is circulating, the first valve 61 may be closed to reduce the possibility of leakage of the recovered slurry during the demagnetization process. When the magnetic impurity content in the recovered slurry is reduced to meet the production standards, the first valve 61 may be opened to allow the demagnetized recovered slurry to flow through the recovery pipeline 33 and be collected into the slurry production device. Optionally, the slurry recovery equipment may further include a detection device, which may be installed in either the recovery pipeline 33 or the circulation pipeline 31. The detection device may be used to detect the magnetic impurity content in the recovered slurry in real time.

[0105] This embodiment of the application sets up a circulation component 30 to increase the number of times the recycled slurry is demagnetized in the demagnetization chamber 21, thereby further reducing the content of magnetic impurities in the recycled slurry and improving the recycling quality of the recycled slurry.

[0106] Please see Figure 2 In some optional embodiments, the impurity removal device 20 includes a plurality of demagnetizing groups G, each demagnetizing group G including a demagnetizing cavity 21 and a magnetic element 22 located in the demagnetizing cavity 21, and the demagnetizing cavities 21 of the plurality of demagnetizing groups G are connected in series and / or in parallel to the processing cavity 11.

[0107] For example, each demagnetizing group G includes one or more demagnetizing cavities 21, and each demagnetizing cavity 21 may be provided with one or more magnetic elements 22.

[0108] Optionally, the demagnetizing groups G are connected in parallel via circulation pipes 31. Circulation pipes 31 include a main pipe and branch pipes. The main pipe connects to the processing chamber 11, and there are multiple branch pipes connected side-by-side to the main pipe. Each branch pipe connects to one demagnetizing group G. Optionally, each branch pipe may be equipped with a second valve 62, which controls whether the branch pipe is connected to the main pipe.

[0109] Optionally, multiple demagnetizing groups G are connected in series via circulation pipe 31, and the multiple demagnetizing groups can be arranged sequentially along a single direction. For example, multiple demagnetizing groups G are arranged and connected in series along a first direction X; or, multiple demagnetizing groups G are arranged and connected in series along a second direction.

[0110] In some examples, a portion of the multiple demagnetizing groups G are connected in series, while another portion is connected in parallel; in other examples, all the multiple demagnetizing groups G are connected in series; and in still other examples, all the multiple demagnetizing groups G are connected in parallel.

[0111] In the above embodiment, by setting up multiple parallel demagnetizing groups G, the recovered slurry is diverted when multiple demagnetizing groups G work together, thereby shortening the demagnetization time and improving the demagnetization efficiency. Simultaneously, it is advantageous to activate a corresponding number of demagnetizing groups G based on the total amount of recovered slurry, reducing redundant arrangements and improving applicability. Furthermore, each demagnetizing group G can perform demagnetization independently and can be maintained separately, improving the continuity and stability of production.

[0112] In the above embodiments, by setting multiple demagnetizing groups G connected in series, the demagnetization purity of the recovered slurry can be improved. This also improves the design flexibility of the demagnetizing groups G, thereby expanding the applicability of the recovered slurry recovered by the slurry recovery equipment.

[0113] Please continue reading. Figure 2 In some alternative embodiments, each demagnetizing group G includes a plurality of demagnetizing cavities 21 connected in series and / or in parallel.

[0114] In some examples, each demagnetizing group G includes multiple demagnetizing cavities 21 connected in series.

[0115] For example, in the demagnetizing group G, a plurality of demagnetizing cavities 21 are arranged and connected sequentially along a first direction X, so that the recycled slurry passes sequentially through each demagnetizing cavity 21 in the demagnetizing group G. The first direction X can be the overall direction of flow of the recycled slurry in the demagnetizing group G.

[0116] Optionally, in the demagnetizing group G, the magnetic field strength in the multiple demagnetizing cavities 21 can be the same or different.

[0117] For example, in the demagnetizing group G, the recycled slurry flows into the demagnetizing group G from the first demagnetizing chamber 21 and then flows out of the demagnetizing group G from the last demagnetizing chamber 21. The magnetic field strength in the first demagnetizing chamber 21 can be less than that in the last demagnetizing chamber 21. The magnetic field strength of the demagnetizing chambers 21 between the first and last demagnetizing chambers 21 can be progressively increased. The magnetic element 22 in the demagnetizing chamber 21 with the lower magnetic field strength can adsorb impurities with larger particle size and stronger magnetism, while the magnetic element 22 in the demagnetizing chamber 21 with the higher magnetic field strength can adsorb impurities with smaller particle size and weaker magnetism. This allows for the graded removal of different impurities in the demagnetizing group G, thereby improving the demagnetizing efficiency.

[0118] In some examples, each demagnetizing group G includes multiple demagnetizing cavities 21 connected in parallel.

[0119] For example, in the demagnetizing group G, a plurality of demagnetizing cavities 21 are arranged sequentially and connected along a second direction so that the recycled slurry is diverted to each demagnetizing cavity 21 in the demagnetizing group G.

[0120] In some examples, the recycled slurry can be demagnetized using a parallel demagnetizing group G combined with multiple demagnetizing cavities 21 connected in series within the demagnetizing group G. In other examples, the recycled slurry can be demagnetized using only the parallel demagnetizing group G, i.e., the demagnetizing group G includes only one demagnetizing cavity 21. In still other examples, the recycled slurry can be demagnetized using only multiple demagnetizing cavities 21 connected in series.

[0121] In these alternative embodiments, it is advantageous to increase the flexibility of the demagnetizing cavity design within the demagnetizing group, thereby expanding the applicability of the slurry recovery equipment to recover slurry.

[0122] Please see Figure 2 and Figure 5 In some optional embodiments, the slurry recovery equipment further includes a feeding device 40, which includes a feeding chamber 41 that is connected to a processing chamber 11, and a filter element 50 is provided between the feeding chamber 41 and the processing chamber 11.

[0123] The feed chamber 41 can serve as the input port of the slurry recovery equipment. The recovered slurry discarded from the demagnetizing device enters the processing chamber 11 through the feed chamber 41. Optionally, when it is necessary to feed the recovered slurry into the feed chamber 41, the feed port of the feed chamber 41 can be opened. After all the recovered slurry has been fed into the feed chamber 41, the feed port of the feed chamber 41 is closed, thereby reducing the amount of gas mixed in when the viscosity treatment device 10 processes the recovered slurry and reducing the impact on the adsorption efficiency of magnetic impurities.

[0124] The filter element 50 can perform preliminary filtration of magnetic impurities in the recycled slurry, thereby reducing the possibility of larger impurities clogging the circulation pipeline 31, reducing maintenance frequency, and improving the overall impurity removal efficiency of the slurry recycling equipment.

[0125] Optionally, a third valve 63 may be provided between the feed chamber 41 and the processing chamber 11. When it is necessary to feed the recycled slurry into the feed chamber 41, the third valve 63 can be opened to allow the recycled slurry to enter the processing chamber 11 from the feed chamber 41. When the recycled slurry circulates between the processing chamber 11 and the demagnetizing chamber 21, the second valve 62 can be closed to reduce the possibility of the recycled slurry returning from the processing chamber 11 to the feed chamber 41.

[0126] Please see Figure 2 and Figure 5 In some alternative embodiments, the filter element 50 includes at least one of a filter screen 51 and a filter pump 52.

[0127] Optionally, the filter screen 51 may include a filtration device composed of multiple layers of filter screens 51. The filter screen 51 can perform preliminary filtration of magnetic impurities in the recycled slurry. Optionally, the filter pump 52 may include a diaphragm pneumatic pump. The filter pump 52 may be equipped with a diaphragm, which can filter the recycled slurry. Optionally, the shape of the diaphragm may include a cylindrical rod, a flat plate, or other shapes. The filter pump 52 can generate suction force on the recycled slurry fed into the feed chamber 41, so that the recycled slurry in the feed chamber 41 enters the processing chamber 11.

[0128] The embodiments of this application, through the above-described settings, facilitate the preliminary filtration of the recycled slurry, improve the overall demagnetization efficiency of the slurry recycling equipment, reduce the usage cost of the filter element 50, and enhance the design flexibility of the filter element 50.

[0129] According to some embodiments of this application, this application provides a battery production system, which includes electrode production equipment and slurry recycling equipment provided in any of the above embodiments. The electrode production equipment includes a demagnetizing device and a coating device. The demagnetizing device is used to demagnetize the slurry to form a demagnetized slurry and a recycled slurry. The coating device is used to coat the demagnetized slurry onto the surface of the current collector of the electrode. The slurry recycling equipment is used to recycle the recycled slurry.

[0130] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application.

[0131] Please refer to the following: Figures 1 to 4 This application provides a slurry recovery device for recovering slurry containing magnetic impurities. The slurry recovery device includes a viscosity treatment device 10 and a removal device 20. The viscosity treatment device 10 includes a treatment chamber 11 and a treatment assembly. The treatment assembly is disposed in the treatment chamber 11 and is used to reduce the viscosity of the recovered slurry in the treatment chamber 11. The removal device 20 includes a demagnetizing chamber 21 and a magnetic element 22. The demagnetizing chamber 21 is connected to the treatment chamber 11 and receives the recovered slurry processed by the viscosity treatment device 10. The magnetic element 22 is disposed in the demagnetizing chamber 21 and is used to adsorb magnetic impurities in the recovered slurry in the demagnetizing chamber.

[0132] The demagnetizing cavity 21 includes two first openings arranged opposite each other along the first direction X. The two first openings are respectively connected to the processing cavity 11, and one of the two openings is used to allow the recycled slurry in the processing cavity to flow into the demagnetizing cavity. Along the first direction X and on the same projection plane, the projection of the magnetic element 22 is located outside the projection of the first opening. The number of magnetic elements 22 includes multiple magnetic elements 22, which are spaced apart. On the same projection plane, the projections of the multiple magnetic elements 22 along the first direction X surround the projections of the first openings along the first direction X. On the same projection plane, the projections of the two first openings along the first direction X at least partially overlap.

[0133] The impurity removal device 20 also includes a tank 23, which includes a demagnetizing cavity 21. The magnetic component 22 includes a magnetic body 221 and a connecting part 222 connected to each other. The magnetic body 221 is disposed in the demagnetizing cavity 21, and the connecting part 222 is detachably connected to the tank 23.

[0134] The slurry recovery equipment also includes a circulation component 30. The processing chamber 11 is connected to the demagnetizing chamber 21 through the circulation component 30. The circulation component 30 is capable of driving the recovered slurry to circulate between the processing chamber 11 and the demagnetizing chamber 21. The impurity removal device 20 includes multiple demagnetizing groups G. Each demagnetizing group G includes a demagnetizing chamber 21 and a magnetic element 22 located within the demagnetizing chamber 21. The demagnetizing chambers 21 of the multiple demagnetizing groups G are connected in parallel to the processing chamber 11. Each demagnetizing group G includes multiple demagnetizing chambers 21 connected in series along a first direction X.

[0135] The slurry recovery equipment also includes a feeding device 40, which includes a feeding chamber 41 that is connected to a processing chamber 11. A filter element 50 is provided between the feeding chamber 41 and the processing chamber 11. The filter element 50 includes a filter screen 51 and a filter pump 52.

[0136] This application also provides a battery production system, which includes electrode production equipment and slurry recycling equipment. The electrode production equipment includes a demagnetizing device 100 and a coating device 200. The demagnetizing device 100 is used to demagnetize the slurry to form a demagnetized slurry and a recycled slurry. The coating device 200 is used to coat the demagnetized slurry onto the surface of the current collector of the electrode. The slurry recycling equipment 300 is used to recycle the recycled slurry.

[0137] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0138] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. However, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A slurry recycling device, characterized in that, The slurry recovery equipment is used to process recycled slurry containing magnetic impurities, and includes: A viscosity treatment device includes a treatment chamber and a treatment component, wherein the treatment component is disposed in the treatment chamber and is used to reduce the viscosity of the recycled slurry in the treatment chamber; The impurity removal device includes a demagnetizing chamber and a magnetic component. The demagnetizing chamber is connected to the processing chamber and receives the recovered slurry after being processed by the viscosity treatment device. The magnetic component is provided inside the demagnetizing chamber and is used to adsorb magnetic impurities in the recovered slurry inside the demagnetizing chamber.

2. The slurry recovery equipment according to claim 1, characterized in that, The demagnetizing cavity includes multiple openings, including a first opening. The first opening is used to allow the recycled slurry in the processing cavity to flow into the demagnetizing cavity. Along a first direction and on the same projection plane, the projection of the magnetic element is located outside the projection of the first opening. The first direction is parallel to the axial direction of the first opening.

3. The slurry recovery equipment according to claim 2, characterized in that, The number of magnetic components includes multiple magnetic components, which are spaced apart and arranged in the same projection plane. The projections of the multiple magnetic components along the first direction surround the projection of the first opening along the first direction.

4. The slurry recovery equipment according to claim 2, characterized in that, The plurality of openings includes two first openings arranged opposite to each other along a first direction, the two first openings being respectively connected to the processing chamber, and at least one of the two first openings being used to allow the recycled slurry in the processing chamber to flow into the demagnetizing chamber.

5. The slurry recovery equipment according to claim 4, characterized in that, Within the same projection plane, the projections of the two first openings along the first direction at least partially overlap.

6. The slurry recovery equipment according to any one of claims 1 to 5, characterized in that, The impurity removal device also includes a tank, the tank including the demagnetizing cavity, the magnetic component including a magnetic body and a connecting part connected to each other, the magnetic body being disposed inside the demagnetizing cavity, and the connecting part being detachably connected to the tank.

7. The slurry recovery equipment according to any one of claims 1 to 5, characterized in that, The slurry recovery equipment also includes a circulation component. The processing chamber is connected to the demagnetizing chamber through the circulation component. The circulation component is at least capable of driving the recovered slurry to circulate between the processing chamber and the demagnetizing chamber.

8. The slurry recovery equipment according to claim 7, characterized in that, The impurity removal device further includes multiple demagnetization groups, each of which includes a demagnetization cavity and a magnetic element located within the demagnetization cavity. The demagnetization cavities of the multiple demagnetization groups are connected in series and / or in parallel to the processing cavity.

9. The slurry recovery equipment according to claim 8, characterized in that, Each of the demagnetizing groups includes a plurality of demagnetizing cavities connected in series and / or in parallel.

10. The slurry recovery equipment according to any one of claims 1 to 5, characterized in that, The slurry recovery equipment also includes a feeding device, which includes a feeding chamber that is connected to the processing chamber, and a filter element is provided between the feeding chamber and the processing chamber.

11. The slurry recovery equipment according to claim 10, characterized in that, The filter element includes at least one of a filter screen and a filter pump.

12. A battery production system, characterized in that, include: Electrode production equipment includes a demagnetizing device and a coating device. The demagnetizing device is used to demagnetize the slurry to form a demagnetized slurry and a recycled slurry. The coating device is used to coat the demagnetized slurry onto the surface of the current collector of the electrode. Includes a slurry recovery device as described in any one of claims 1 to 11, wherein the slurry recovery device is used to recover the recovered slurry.

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