Hard-carbon negative electrode material preparation device for sodium-ion battery

Abstract

A hard-carbon negative electrode material preparation device for a sodium-ion battery, the preparation device relating to the technical field of battery preparation. The preparation device comprises feeding parts, a crushing module, a mixing module and a final processing module. The feeding parts can drive hard-carbon raw materials to sequentially pass through the crushing module, the mixing module and the final processing module. After the feeding parts feed the hard-carbon raw materials into the crushing module, the crushing module can crush the hard-carbon raw materials, and possible magnetic impurities in the hard-carbon raw materials are removed by means of a first demagnetization part. A first mixing part can thoroughly mix the crushed hard-carbon raw materials, and a second mixing part can mix the hard-carbon raw materials in batches, so as to further make the hard-carbon raw materials unform in content. A first screening part and a second screening part can perform multiple instances of screening on the hard-carbon raw materials, such that the hard-carbon raw materials are screened more thoroughly; and a second demagnetization part can perform demagnetization on the hard-carbon raw materials again, thereby further reducing the magnetic impurities in the hard-carbon raw materials.

Description

Sodium ion battery hard carbon negative electrode material preparation device Technical Field

[0001] The present application relates to a device for preparing a hard carbon negative electrode material for a sodium ion battery, and belongs to the field of battery technology. Background Art

[0002] Currently, hard carbon negative electrode materials for sodium ion batteries are prepared using spiral ribbon mixing machinery during the crushing, coating, carbonization and finished product processing processes. The hard carbon negative electrode materials prepared by spiral ribbon mixing have a high impurity content and poor mixing effect, especially the high content of magnetic foreign matter in the material, which leads to poor quality of the final product. Summary of the Invention

[0003] The present application provides a device for preparing hard carbon negative electrode materials for sodium ion batteries, which solves the problem of low purity of hard carbon negative electrode materials for sodium ion batteries prepared in related technologies.

[0004] The present application provides a device for preparing a hard carbon negative electrode material for a sodium ion battery, comprising: a plurality of feeding parts; a plurality of packaging parts;

[0005] A crushing module comprises a crushing part and a first demagnetizing part, wherein the crushing part is connected to the first demagnetizing part, the feeding part is connected to the crushing part, and the packaging part is connected to the first demagnetizing part;

[0006] A mixing module includes a first mixing part, one end of which is connected to the feeding part, and the other end of which is connected to the packaging part;

[0007] The finished product module includes a second mixing section, a first screening section, a second screening section, and a second demagnetization section, wherein the second mixing section, the first screening section, the second demagnetization section, and the second screening section are connected in sequence, the second mixing section is further connected to the feeding section, and the second screening section is further connected to the packaging section;

[0008] a plurality of conveying parts, the conveying part is provided between the crushing module and the mixing module, and the conveying part is provided between the crushing module and the finished product module, and the conveying part is used to transport the bagged hard carbon raw material;

[0009] a plurality of detection members distributed along a conveying direction of the conveying portion, the detection members comprising a detection portion and an irradiation portion, the detection portion and the irradiation portion being configured to be opposite to the conveying portion, the detection portion having a detection end, the detection end of the detection portion being opposite to the bagged hard carbon raw material, the irradiation portion being configured to stroboscopically irradiate the bagged hard carbon raw material, and the detection portion being configured to detect conditions on the surface of the bagged hard carbon raw material; a processing module being electrically connected to the plurality of detection members, the processing module determining the type of contaminants in the bagged hard carbon raw material based on conditions on the surface of the bagged hard carbon raw material detected by the detection members;

[0010] The feeding part includes an air storage bag, a valve assembly, an air control component, an air supply component, an electromagnetic control valve and a material storage barrel. The valve assembly includes a first shell and a valve body. The valve body is movably arranged in the first shell. The first shell has a valve inlet and a valve outlet that can be communicated. The valve inlet is communicated with the air storage bag, and the valve outlet is communicated with the material storage barrel. The valve body is made of non-metallic material, and the first shell is made of corrosion-resistant material.

[0011] The air control is connected to the valve body, and the air control is configured to drive the valve body to switch the valve assembly between a first state and a second state. When the valve assembly is in the first state, the valve body blocks at least one of the valve inlet and the valve outlet. When the valve assembly is in the second state, the valve inlet is communicated with the valve outlet.

[0012] The air supply component is connected to the air control component;

[0013] The electromagnetic control valve is arranged between the air supply component and the air control component.

[0014] In some embodiments, the first screening section and the second screening section are double-layer screeners, and the first screening section and the second screening section are configured to screen out hard carbon raw materials with a size of not less than 325 mesh; the crushing section is a jet mill, and the first mixing section and the second mixing section are vacuum mixers.

[0015] In some embodiments, there are multiple feeding parts, the first demagnetizing part and the first mixing part are connected through the feeding parts, and the first mixing part and the second mixing part are also connected through the feeding parts.

[0016] In some embodiments, the valve body is rotatably disposed in the first shell, and the valve body is provided with an air path passage passing through the valve body. When the valve body is in the second state, both ends of the air path passage are respectively connected to the valve inlet and the valve outlet.

[0017] In some embodiments, the valve body is a sphere, the air passage is arranged along the axis of the valve body, and the valve body is configured to rotate around a direction perpendicular to the axis of the valve body.

[0018] In some embodiments, the valve body is made of a non-metal composite material, and the first shell is made of at least one of stainless steel and carbon steel.

[0019] In some embodiments, the air control unit includes a second shell and a valve stem, the second shell has an air channel therein, the air channel is connected to the air supply component, the valve stem is movably disposed in the air channel, and the valve stem is connected to the valve body.

[0020] In some embodiments, the air control unit further includes a slider, which is movably disposed in the air channel, the slider divides the air channel into an outer cavity and an inner cavity, the air supply member is connected to the outer cavity, the valve stem is provided with an outer tooth portion circumferentially arranged around the valve stem, and the slider is provided with a rack portion that cooperates with the outer tooth portion.

[0021] In some embodiments, there are two sliders, and the two sliders are arranged opposite to each other. There are two outer cavities, and the two outer cavities are located on opposite sides of the two sliders. The inner cavity is located between the two sliders. The valve stem is arranged in the inner cavity, the air supply part is connected to the inner cavity, and the air supply part is also connected to any one of the outer cavities.

[0022] In some embodiments, the rack portions of the two sliders are respectively engaged with opposite sides of the outer tooth portion, and the moving directions of the two sliders are parallel;

[0023] The feeding part further includes a first pipeline and a second pipeline, the first pipeline and the second pipeline are connected to the electromagnetic control valve, the first pipeline is also communicated with the inner cavity, and the second pipeline is also communicated with the outer cavity.

[0024] The present invention proposes a device for preparing hard carbon anode materials for sodium-ion batteries. The feeding section drives the hard carbon raw material through a pulverizing module, a mixing module, and a finished product module. The feeding section feeds the hard carbon raw material into the pulverizing module, where it pulverizes the hard carbon raw material. A first demagnetizing section removes any magnetic impurities that may be present. The first mixing section thoroughly mixes the pulverized hard carbon raw material, while the second mixing section batch-mixes the hard carbon raw material to further uniformize its content. The first and second screening sections screen the hard carbon raw material multiple times, ensuring more thorough screening. The second demagnetizing section further demagnetizes the hard carbon raw material to further reduce magnetic impurities. The packaging section packages the hard carbon raw material after it has passed through the pulverizing, mixing, and finished product modules into bags for transport via multiple conveying sections. This prevents the hard carbon raw material from being transported within pipelines, preventing wear and tear between the hard carbon raw material and the inner walls of the pipeline, which could cause the pipeline's own material to fall into the hard carbon raw material and contaminate it.

[0025] The irradiation part can flash the bagged hard carbon raw material, so that the irradiation part can have different irradiation effects by adjusting the flash frequency of the irradiation part, so that various types of damage and defects on the bagged hard carbon raw material can be relatively clearly displayed under the different flash illumination of the irradiation part. In this way, when the detection part detects that the bagged hard carbon raw material is damaged during transportation on the conveying part and there is a risk of contamination, the conveying part can be controlled to stop and the damaged bagged hard carbon raw material can be unloaded to prevent the bagged hard carbon raw material from entering the mixing module and the finished product module and contaminating other materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and other objects, features and advantages of the embodiments of the present application will become more readily understood through the following detailed description with reference to the accompanying drawings, in which various embodiments of the present application are illustrated by way of example and not limitation, wherein:

[0027] FIG1 is a schematic diagram of a device for preparing a hard carbon negative electrode material for a sodium ion battery according to an embodiment of the present application;

[0028] FIG2 is a schematic diagram of a pulverization module of a device for preparing a hard carbon negative electrode material for a sodium ion battery according to an embodiment of the present application;

[0029] FIG3 is a schematic diagram of a mixing module of a device for preparing a hard carbon negative electrode material for a sodium ion battery according to an embodiment of the present application;

[0030] FIG4 is a schematic diagram of a finished product module of a device for preparing a hard carbon negative electrode material for a sodium ion battery according to an embodiment of the present application;

[0031] FIG5 is a schematic diagram of a loading portion of a device for preparing a hard carbon negative electrode material for a sodium ion battery according to an embodiment of the present application;

[0032] FIG6 is a schematic diagram of the internal structure of a valve assembly of a device for preparing a hard carbon negative electrode material for a sodium ion battery according to an embodiment of the present application;

[0033] FIG7 is a schematic diagram of a gas control unit of a device for preparing a hard carbon negative electrode material for a sodium ion battery according to an embodiment of the present application in one state;

[0034] FIG8 is a schematic diagram of a gas control unit of the apparatus for preparing a hard carbon negative electrode material for a sodium ion battery according to an embodiment of the present application in another state;

[0035] FIG9 is a schematic diagram showing the connection between a detection component and a processing module of a device for preparing a hard carbon negative electrode material for a sodium ion battery according to an embodiment of the present application;

[0036] FIG10 is a schematic diagram of a detection component of a device for preparing a hard carbon negative electrode material for a sodium ion battery according to an embodiment of the present application;

[0037] FIG11 is a schematic diagram showing the positions of a detection component and a conveying part of a device for preparing hard carbon negative electrode materials for sodium ion batteries according to an embodiment of the present application.

[0038] Reference numerals: 100 - feeding part, 110 - air storage bag, 120 - valve assembly, 121 - first housing, 121a - valve inlet, 121b - valve outlet, 122 - valve body, 122a - air passage, 130 - air control unit, 131 - second housing, 131a - outer cavity, 131b - inner cavity, 132 - valve stem, 132a - outer tooth portion, 133 - slider, 133a - rack portion, 134 - elastic member, 140 - air supply member, 150 - electromagnetic control valve, 160 - first pipeline, 170 - second pipeline , 180-intake valve, 190-storage barrel, 200-crushing module, 210-crushing section, 220-first demagnetization section, 300-mixing module, 310-first mixing section, 400-finished product module, 410-second mixing section, 420-first screening section, 430-second screening section, 440-second demagnetization section, 500-packaging section, 600-transmission section, 700-detection piece, 710-detection section, 720-irradiation section, 721-first irradiation sub-section, 722-second irradiation sub-section, 800-processing module. Implementation Method

[0039] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0040] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0042] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0043] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0044] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0045] Currently, hard carbon negative electrode materials for sodium ion batteries are prepared using spiral ribbon mixing machinery during the crushing, coating, carbonization and finished product processing processes. The hard carbon negative electrode materials prepared by spiral ribbon mixing have a high impurity content and poor mixing effect, especially the high content of magnetic foreign matter in the material, which leads to poor quality of the final product.

[0046] The present invention proposes a device for preparing hard carbon negative electrode materials for sodium-ion batteries. The feeding section drives the hard carbon raw material through a pulverizing module, a mixing module, and a finished product module. After the feeding section feeds the hard carbon raw material into the pulverizing module, the pulverizing module pulverizes the hard carbon raw material, and a first demagnetization section removes any magnetic impurities that may be present in the hard carbon raw material. The mixing section thoroughly mixes the pulverized hard carbon raw material. The first and second screening sections screen the hard carbon raw material multiple times, ensuring more thorough screening. The second demagnetization section further demagnetizes the hard carbon raw material, further reducing the amount of magnetic impurities in the hard carbon raw material.

[0047] The valve assembly of the feed section is disposed between the air storage bag and the storage barrel, enabling the valve assembly to control the flow of air between the air storage bag and the storage barrel, thereby enabling the storage barrel device utilizing the feed section to be opened or closed. The valve body is constructed of a non-metallic material, and the first housing is constructed of a corrosion-resistant material, ensuring that the valve assembly will not generate magnetic foreign matter even after long-term use. This prevents the feed section from introducing magnetic foreign matter into the hard carbon raw material during transport, thereby ensuring that the magnetic foreign matter content of the hard carbon raw material does not exceed the specified level. The electromagnetic control valve controls the air supply element to supply air to the air control element, which in turn controls the opening and closing of the valve assembly. This allows for precise and rapid control of the flow of air between the feed section and the storage barrel device utilizing the feed section. Therefore, the present invention's sodium-ion battery hard carbon negative electrode material preparation device can effectively reduce the content of magnetic foreign matter in the sodium-ion battery hard carbon negative electrode material during preparation, resulting in a higher purity of the sodium-ion battery hard carbon negative electrode material.

[0048] The packaging department can pack the hard carbon raw materials that have passed the crushing module, mixing module and finished product module into bagged hard carbon raw materials and transport them through multiple conveying parts. This can avoid the transportation of hard carbon raw materials in the pipeline to a certain extent, and prevent the hard carbon raw materials from being worn against the inner wall of the pipeline, causing the pipeline's own materials to fall into the hard carbon raw materials and contaminate the hard carbon raw materials.

[0049] The irradiation part can flash the bagged hard carbon raw material, so that the irradiation part can have different irradiation effects by adjusting the flash frequency of the irradiation part, so that various types of damage and defects on the bagged hard carbon raw material can be relatively clearly displayed under the different flash illumination of the irradiation part. In this way, when the detection part detects that the bagged hard carbon raw material is damaged during transportation on the conveying part and there is a risk of contamination, the conveying part can be controlled to stop and the damaged bagged hard carbon raw material can be unloaded to prevent the bagged hard carbon raw material from entering the mixing module and the finished product module and contaminating other materials.

[0050] The following describes in detail the device for preparing the hard carbon negative electrode material for sodium ion batteries provided in this application in conjunction with specific embodiments.

[0051] The present application provides a device for preparing hard carbon negative electrode materials for sodium ion batteries, as shown in Figures 1 to 5, 9, and 11, comprising a plurality of feeding sections 100, a crushing module 200, a mixing module 300, a finished product module 400, a plurality of packaging sections, a plurality of conveying sections 600, a plurality of detection elements 700, and a processing module 800. The crushing module 200 comprises a crushing section 210 and a first demagnetization section 220, the crushing section 210 and the first demagnetization section 220 being connected, one of the plurality of feeding sections 100 being connected to the crushing section 210, and one of the plurality of packaging sections 500 being connected to the first demagnetization section 220. The mixing module 300 comprises a first mixing section 310, one end of the first mixing section 310 being connected to one of the plurality of feeding sections 100, and the other end of the first mixing section 310 being connected to one of the plurality of packaging sections 500. The finished product module 400 includes a second mixing section 410, a first screening section 420, a second screening section 430 and a second demagnetization section 440. The first screening section 420, the second demagnetization section 440 and the second screening section 430 are connected in sequence. The second screening section 430 is also connected to one of the multiple loading sections 100, and the second demagnetization section 440 is also connected to one of the multiple packaging sections 500.

[0052] One of the plurality of conveying parts 600 may be disposed between the crushing module 200 and the mixing module 300 , and another of the plurality of conveying parts 600 may be disposed between the mixing module 300 and the finished product module 400 .

[0053] The loading section 100 drives the bagged hard carbon raw material through the pulverizing module 200, the mixing module 300, and the finished product module 400 in sequence. The pulverizing section 210 is used to pulverize the hard carbon raw material. Specifically, the relatively large particles of the hard carbon raw material can be pulverized into smaller particles through the pulverizing section 210. Any magnetic impurities in the hard carbon raw material can be removed by the first demagnetizing section 220. After demagnetization by the first demagnetizing section 220, the hard carbon raw material is repackaged into bags by the packaging section 500 and transported via the conveyor section 600 to the loading section 100 connected to the first mixing section 310. After the bags are unpacked, they are transported to the first mixing section 310 through the loading section 100 and then repackaged into bags by the packaging section 500. The bagged hard carbon raw material is then transported via the conveyor section 600 to the loading section 100 connected to the second mixing section 410, where they are unpacked and then transported to the second mixing section 410. After the hard carbon raw material is processed by the finished product module 400, it can be packaged again by the packaging unit 500 to form a prepared bagged sodium ion battery hard carbon negative electrode material.

[0054] By packaging the hard carbon raw materials with multiple packaging parts 500 and then transporting them, pipeline transportation of the hard carbon raw materials can be replaced. This can prevent the material on the inner wall of the pipeline from falling off and mixing into the hard carbon raw materials due to pipeline transportation, thereby preventing the hard carbon raw materials from being mixed with magnetic foreign matter during transportation.

[0055] As shown in Figures 9-11 , multiple inspection elements 700 are arranged along the conveying direction of the conveyor 600 . The bagged hard carbon material can be arranged in a rectangular structure. As the bagged hard carbon material is transported along the conveyor 600 , the inspection elements 700 can inspect the surface of the bagged hard carbon material. Specifically, the inspection element 700 includes an inspection unit 710 and an illumination unit 720 . The inspection unit 710 can detect the condition of the bagged hard carbon material through image recognition. The illumination unit 720 can illuminate the bagged hard carbon material, clearly showing the surface of the bagged hard carbon material. This ensures that the surface image captured by the inspection unit 710 is adequately exposed, resulting in a clear image. The illumination unit 720 can illuminate the bagged hard carbon material using a stroboscopic method. By adjusting the stroboscopic frequency of the illumination unit 720 , the illumination unit 720 can achieve different illumination effects, thereby enabling various types of damage and defects on the bagged material to be clearly displayed under the different stroboscopic illumination frequencies of the illumination unit 720 . Specifically, the irradiation unit 720 irradiates the bagged hard carbon raw material with different stroboscopic frequencies, so that the number of reflections and the emission frequency of the irradiated light on the bagged hard carbon raw material are different. Different types of damage have relatively clearer display effects under different light reflection times and reflection frequencies.

[0056] The number of the detection members 700 can be set to be multiple, and the multiple detection members 700 can be specifically arranged around the conveying part 600. In this way, when the bagged hard carbon raw material is located on the conveying part 600, the multiple detection members 700 can detect the six sides of the bagged hard carbon raw material to fully detect the surface of the bagged hard carbon raw material.

[0057] Specifically, the detection unit 710 can be a camera, and the illumination unit 720 can include a first illumination sub-unit 721 and a second illumination sub-unit 722. The first illumination sub-unit 721 and the second illumination sub-unit 722 can illuminate the bagged hard carbon raw material with different stroboscopic ranges, thereby providing the illumination unit 720 with a larger stroboscopic range. When the first illumination sub-unit 721 illuminates the surface of the bagged hard carbon raw material, the detection unit 710 can capture an image of the surface. When the second illumination sub-unit 722 illuminates the surface of the bagged hard carbon raw material, the detection unit 710 can capture another image of the surface. If defects such as damage or scratches appear on the surface of the bagged hard carbon raw material, the processing module 800 can record them, allowing users to understand the transportation status of the bagged hard carbon raw material. Multiple detection parts 700 can detect the surface condition of the bagged hard carbon raw material in real time while the bagged hard carbon raw material is being transported on the conveying part 600. When the surface of the bagged hard carbon raw material is damaged, the bagged hard carbon raw material may be contaminated. In this way, the location of the damaged bagged hard carbon raw material can be determined based on the location of the detection part 700 where the damage on the surface of the bagged hard carbon raw material is detected.

[0058] The processing module 800 is electrically connected to the plurality of detection members 700. The processing module 800 may be configured to store information on pollutants corresponding to the environments in which the plurality of detection members 700 are located. In this way, the processing module 800 may determine the type of pollutants that may be mixed into the bagged hard carbon raw material based on the detection member 700 that detects damage on the surface of the bagged hard carbon raw material.

[0059] The first mixing section 310 thoroughly mixes the pulverized hard carbon raw material, ensuring a more uniform and thorough mixing of granular hard carbon raw materials of varying outer diameters. The second mixing section 410 batch mixes the hard carbon raw material. The first screening section 420 and the second screening section 430 screen the hard carbon raw material multiple times, ensuring a more thorough screening of the hard carbon raw material and obtaining granular hard carbon raw material that meets composite requirements. The second demagnetization section 440 further demagnetizes the hard carbon raw material, further reducing the amount of magnetic impurities in the hard carbon raw material.

[0060] The loading portion 100 includes a material storage barrel 190 , an air storage bag 110 , a valve assembly 120 , an air control unit 130 , an air supply unit 140 and an electromagnetic control valve 150 .

[0061] The storage barrel 190 is used to store the hard carbon raw material, and the gas bag 110 is the power source for the feed section 100. The gas bag 110 is a container assembly containing compressed gas. The gas bag 110 has excellent structural strength and sealing properties, thereby maintaining the high pressure of the gas within the gas bag 110. Specifically, the gas bag 110 can be constructed of a corrosion-resistant metal canister, which provides excellent structural strength and prevents the accumulation of impurities and foreign matter within the gas tank due to corrosion. Alternatively, the gas bag 110 can be constructed of a rubber member, which also prevents the accumulation of impurities and foreign matter within the gas bag 110 and allows for easy storage and transportation after the gas within the rubber member is emptied.

[0062] 5 and 6 , the valve assembly 120 is in communication with the gas bag 110 and the material storage barrel 190. Specifically, the valve assembly 120 has a valve inlet 121a and a valve outlet 121b. The valve inlet 121a is in communication with the gas bag 110, and the valve outlet 121b is in communication with the material storage barrel 190. Therefore, the compressed gas in the gas bag 110 can enter the valve assembly 120 through the valve inlet 121a and enter the material storage barrel 190 from the valve assembly 120 through the valve outlet 121b. The valve assembly 120 specifically includes a first housing 121 and a valve body 122. The first housing 121 is a structural member having a cavity therein. The valve inlet 121a and the valve outlet 121b are both disposed in the first housing 121 and are in communication with the cavity within the first housing 121. The valve body 122 is movably disposed in the cavity within the first housing 121.

[0063] By moving the valve body 122 relative to the first housing 121, the valve assembly 120 can be switched between a first state and a second state. When the valve assembly 120 is in the first state, the valve body 122 can block the opening in the inner cavity of the first housing 121 corresponding to at least one of the valve inlet 121a and the valve outlet 121b, thereby disconnecting the valve inlet 121a and the valve outlet 121b. At this time, the compressed gas in the gas storage bag 110 cannot enter the storage barrel 190 through the valve assembly 120. When the valve assembly 120 is in the second state, the valve body 122 no longer blocks the opening in the inner cavity of the first housing 121 corresponding to the valve inlet 121a and the valve outlet 121b, thereby allowing the gas in the gas storage bag 110 to enter the inner cavity of the first housing 121 through the valve inlet 121a and be input from the inner cavity of the first housing 121 to the storage barrel 190 through the valve outlet 121b. After entering the storage barrel 190, the gas can act on the hard carbon raw material in the storage barrel 190 to push the hard carbon raw material to move, thereby achieving the above purpose. In summary, by adjusting the relative position relationship between the valve body 122 and the first housing 121, the open and closed state of the valve assembly 120 can be adjusted.

[0064] In addition, the gas storage bag 110 can also be connected to the air intake valve 180, and the air intake valve 180 can be connected to the air intake end of the gas storage bag 110. The gas storage bag 110 can replenish compressed gas through the air intake end, and the air intake valve 180 can control the opening and closing of the air intake end.

[0065] The pneumatic control 130 is a driving mechanism powered by compressed gas. It is connected to the valve assembly 120. Specifically, the pneumatic control 130 is connected to the valve body 122 of the valve assembly 120. Thus, the pneumatic control 130 can drive the valve body 122 to move relative to the first housing 121, thereby switching the valve assembly 120 between a first state and a second state. The pneumatic supply member 140 is connected to the pneumatic control 130. The pneumatic supply member 140 contains compressed gas, which can be input into the pneumatic control 130, thereby providing a power source for the pneumatic control 130. The electromagnetic control valve 150 is disposed between the gas supply member 140 and the gas control member 130. Specifically, the electromagnetic control valve 150 is disposed on the pipeline between the gas supply member 140 and the gas control member 130. The electromagnetic control valve 150 controls the opening and closing of the pipeline between the gas supply member 140 and the gas control member 130. When the electromagnetic control valve 150 is opened, the pipeline between the gas supply member 140 and the gas control member 130 is in a flow state, so that the gas supply member 140 can input gas into the gas control member 130, so that the gas control member 130 can drive the valve assembly 120 to switch between the first state and the second state. By controlling the flow of gas between the gas supply member 140 and the gas control member 130 through the electromagnetic valve, the flow of gas between the gas supply member 140 and the gas control member 130 can be accurately and quickly controlled, thereby accurately and quickly adjusting the state of the valve assembly 120, and ultimately accurately and quickly controlling the opening or closing of the gas storage bag 110.

[0066] In the feeding section 100 of the present application, the valve assembly 120 is disposed between the air storage bag 110 and the storage barrel 190, so that the valve assembly 120 can control the air flow between the air storage bag 110 and the storage barrel 190, thereby enabling the feeding section 100 to be opened or closed. The valve body 122 is made of a non-metallic material, and the first shell 121 is made of a corrosion-resistant material. This ensures that the valve assembly 120 will not produce magnetic foreign matter even after long-term use. This prevents magnetic foreign matter from entering the hard carbon raw material, thereby ensuring that the magnetic foreign matter content of the hard carbon raw material does not exceed the standard. The electromagnetic control valve 150 controls the air supply component 140 to supply air to the air control unit 130, and the air control unit 130 controls the opening and closing of the valve assembly 120. This allows for precise and rapid control of the air flow of the feeding section 100 of the present application, thereby enabling precise and rapid control of the opening and closing of the feeding section 100 of the present application.

[0067] In some embodiments, referring to FIG. 5 , to enable the valve body 122 to switch the valve assembly 120 between the first state and the second state by moving relative to the first housing 121, the valve body 122 is specifically rotatably disposed within the first housing 121. Specifically, the valve body 122 defines an air passage 122a, which is a through hole extending through the valve body 122. Thus, both ends of the air passage 122a communicate with the inner cavity of the first housing 121. When the air control 130 controls the rotation of the valve body 122, the air passage 122a of the valve body 122 rotates with the valve body 122. When the valve assembly 120 is in the first state, the valve body 122 blocks at least one of the valve inlet 121a and the valve outlet 121b, disconnecting the air passage 122a from at least one of the valve inlet 121a and the valve outlet 121b, thereby preventing compressed gas from passing through the valve assembly 120. When the valve assembly 120 is in the second state, the two ends of the air path channel 122a of the valve body 122 are respectively connected to the valve inlet 121a and the valve outlet 121b, so that the valve inlet 121a, the air path channel 122a and the valve outlet 121b form a passage structure, and the compressed gas in the air storage bag 110 can be input into the storage barrel 190 through the valve inlet 121a, the air path channel 122a and the valve outlet 121b in turn.

[0068] Specifically, when the valve assembly 120 is in the first state, the valve body 122 can be rotated until the outer wall of the valve body 122 is opposite to at least one of the valve inlet 121a and the valve outlet 121b, so that at least one of the valve inlet 121a and the valve outlet 121b can be blocked by the valve body 122; when the valve assembly 120 is in the second state, the valve body 122 can be rotated to the two ends of the air path 122a respectively docking with the valve inlet 121a and the valve outlet 121b.

[0069] Of course, it should be understood that in other embodiments, the valve body 122 of the present application can also switch the valve assembly 120 between the first state and the second state by moving relative to the first housing 121. Specifically, the air control 130 can drive the valve body 122 to move until the outer wall of the valve body 122 is opposite to at least one of the valve inlet 121a and the valve outlet 121b to block the valve inlet 121a and / or the valve outlet 121b, or the air control 130 can drive the valve body 122 to move until the air passage 122a of the valve body 122 is in communication with the valve inlet 121a and the valve outlet 121b.

[0070] In some embodiments, referring to Figure 5, the valve body 122 of the present application can specifically adopt a spherical structure. Accordingly, the inner cavity of the first shell 121 is a spherical cavity that cooperates with the valve body 122 of the spherical structure. Therefore, the valve body 122 can be rotated in multiple directions to the outer wall of the valve body 122 to block the valve inlet 121a and / or the valve outlet 121b, or the valve body 122 can be rotated in multiple directions to the two ends of the air path 122a to communicate with the valve inlet 121a and the valve outlet 121b. In addition, when the inner cavity of the first shell 121 is a spherical cavity, there is no need to set up redundant space in the first shell 121 for the valve body 122 to move in a linear direction. This can make the structure of the first shell 121 more compact, and thus the structure of the valve assembly 120 can be more compact.

[0071] The air path channel 122a of the valve body 122 can be set to be set in the same direction as the axis of the valve body 122. Therefore, the air path channel 122a of the valve body 122 can be a straight channel, and the valve body 122 is configured to rotate along the axis of the valve body 122. Specifically, the valve inlet 121a and the valve outlet 121b of the first shell 121 can be relatively arranged on both sides of the first shell 121, and the valve body 122 can rotate around the direction perpendicular to the axis of the air path channel 122a. In this way, when the two ends of the air path channel 122a are respectively connected to the valve inlet 121a and the valve outlet 121b, the valve body 122 can be deflected by a small angle so that the two ends of the air path channel 122a are respectively misaligned with the valve inlet 121a and the valve outlet 121b, thereby making the valve assembly 120 switch between the first state and the second state faster.

[0072] Of course, in other embodiments, the valve body 122 can also adopt a cylindrical structural component. Accordingly, the inner cavity of the first shell 121 can be a cylindrical cavity, and the air path 122a of the valve body 122 is arranged in a direction perpendicular to the axis of the valve body 122. Therefore, the valve body 122 can rotate around the axis of the valve body 122 to quickly switch the state of the valve assembly 120.

[0073] In some embodiments, the valve body 122 of the present application can be made of a non-metallic composite material. Specifically, the valve body 122 can be made of polytetrafluoroethylene or homopolypropylene, which can provide the valve body 122 with excellent structural strength and stable chemical properties. The first shell 121 can be made of stainless steel or carbon steel, which can make the first shell 121 corrosion-resistant. At the same time, using stainless steel or carbon steel to make the first shell 121 easier to manufacture and form.

[0074] In some embodiments, referring to Figures 7 and 8, in order to enable the air control 130 of the present application to control the valve body 122 to rotate relative to the first housing 121, the air control 130 may include a second housing 131 and a valve stem 132. The second housing 131 further includes an air passage, which is further connected to the air supply member 140. The valve stem 132 is movably disposed within the air passage of the second housing 131 and further connected to the valve body 122. Therefore, when the electromagnetic control valve 150 controls the pipeline between the air supply member 140 and the air passage to be open, compressed gas within the air supply member 140 can be input into the air passage, thereby pushing the valve stem 132 to move, thereby causing the valve body 122 connected to the valve stem 132 to move. This achieves the purpose of changing the relative position of the valve body 122 and the first housing 121, thereby allowing the valve assembly 120 to switch between the first state and the second state.

[0075] When the valve body 122 is rotatably disposed in the first shell 121 , the compressed gas in the air supply member 140 enters the air passage of the second shell 131 and drives the valve stem 132 to rotate, thereby making the valve body 122 connected to the valve stem 132 rotatable.

[0076] The air control 130 further includes a slider 133 and an elastic member 134. The slider 133 is movably disposed within the air passage of the second housing 131, with the outer wall of the slider 133 sealingly contacting the inner wall of the air passage. Thus, the slider 133 can separate the air passage into an outer chamber 131a and an inner chamber 131b. The outer chamber 131a and the inner chamber 131b are located on opposite sides of the slider 133. Therefore, as the slider 133 moves within the air passage, the spaces between the outer chamber 131a and the inner chamber 131b can increase or decrease accordingly. The air supply member 140 can be specifically connected to the outer chamber 131a. When the air supply member 140 inputs compressed gas into the outer chamber 131a, the compressed gas can propel the slider 133 toward the inner chamber 131b. The valve stem 132 is provided with an external tooth portion 132a arranged around the circumference of the valve stem 132, and a tooth portion is provided on the external tooth portion 132a. The slider 133 is provided with a rack portion 133a that cooperates with the external tooth portion 132a. Therefore, when the external tooth portion 132a is engaged with the rack portion 133a, the slider 133 moves to drive the rack portion 133a to move, so that the external tooth portion 132a engaged with the rack portion 133a can rotate, and finally the valve stem 132 connected to the external tooth portion 132a can rotate, so that the valve stem 132 can drive the valve body 122 to rotate.

[0077] The elastic member 134 is arranged in the second shell body 131. One end of the elastic member 134 can be connected to the inner wall of the second shell body 131, and the other end of the elastic member 134 can be connected to the slider 133. When the slider 133 moves, the elastic member 134 can be deformed by force. In this way, when the slider 133 is no longer affected by the compressed gas, or the force of the compressed gas on the slider 133 is reduced, the restoring deformation force of the elastic member 134 can drive the slider 133 to move in the opposite direction, so that the slider 133 can be reset more conveniently.

[0078] When it is necessary to reverse the movement of the slider 133, the air supply member 140 can be used to extract the air in the outer chamber 131a, thereby reducing the pressure in the outer chamber 131a and causing the slider 133 to move toward the outer chamber 131a. This allows the valve stem 132, which is engaged with the slider 133, to rotate in the opposite direction, thereby causing the valve body 122 connected to the valve stem 132 to rotate in the opposite direction. In addition, the air supply member 140 can also be configured to communicate with both the outer chamber 131a and the inner chamber 131b. In this way, the air supply member 140 can inject compressed air into the outer chamber 131a and the inner chamber 131b respectively, so that the slider 133 can move toward the inner chamber 131b or the outer chamber 131a, thereby causing the valve stem 132 to rotate forward and reverse.

[0079] In some embodiments, referring to Figures 7 and 8 , the number of sliders 133 can be two. The two sliders 133 can be positioned relative to each other within the air passage of the second housing 131 , such that the area between the two sliders 133 constitutes the inner chamber 131b, and the opposite sides of the two sliders 133 constitute the outer chamber 131a. The valve stem 132 is positioned within the inner chamber 131b between the two sliders 133, with the racks 133a of both sliders 133 mating with the outer teeth 132a of the valve stem 132. The air supply member 140 can communicate with the inner chamber 131b and at least one of the two outer chambers 131a. When the air supply member 140 injects compressed gas into the inner chamber 131b, the compressed gas acts on the sidewalls of the two sliders 133 within the inner chamber 131b, causing the two sliders 133 to move in opposite directions. This allows both sliders 133 to simultaneously drive the valve stem 132 to rotate in one direction, ensuring more stable and reliable rotation of the valve stem 132. When the gas supply member 140 inputs compressed gas into any outer cavity 131a, the compressed gas can act on the outer wall of the slider 133, so that the slider 133 can move toward the inner cavity 131b, thereby allowing the valve stem 132 to rotate in the other direction.

[0080] Of course, the air supply component 140 can also be connected to both outer cavities 131a, so that the air supply component 140 can simultaneously input compressed gas into the two outer cavities 131a, so that the two sliders 133 can be simultaneously forced to move toward the inner cavity 131b, so that the valve stem 132 can rotate more reliably and efficiently.

[0081] In some embodiments, the rack portions 133a of the two sliders 133 in the present application can respectively cooperate with the opposite sides of the outer tooth portion 132a, and the moving directions of the two sliders 133 are parallel, so that the two rack portions 133a can relatively clamp the outer tooth portion 132a between the two rack portions 133a, thereby making the outer tooth portion 132a and the two rack portions 133a cooperate stably.

[0082] In some embodiments, the loading part 100 of the present application also includes a first pipeline 160 and a second pipeline 170, both of which are connected to the electromagnetic control valve 150, the first pipeline 160 is also connected to the outer cavity 131a, and the second pipeline 170 is also connected to the inner cavity 131b, and the electromagnetic control valve 150 can control the opening and closing of the first pipeline 160 and the second pipeline 170.

[0083] When it is necessary to allow the compressed gas in the gas storage bag 110 to pass through the valve assembly 120 and be discharged from the valve outlet 121b, the second pipeline 170 can be opened by the electromagnetic control valve 150, and the first pipeline 160 can be closed by the electromagnetic control valve 150, so that the compressed gas in the gas supply component 140 can be input into the inner cavity 131b of the second shell 131, so that the two sliders 133 move in opposite directions, so that the valve stem 132 can drive the valve body 122 to rotate in the first direction, so that the two ends of the gas path 122a of the valve body 122 are respectively connected to the valve inlet 121a and the valve outlet 121b of the first shell 121. When it is necessary to prevent the compressed gas in the air storage bag 110 from passing through the valve assembly 120, the first pipeline 160 can be opened by the electromagnetic control valve 150, and the second pipeline 170 can be closed by the electromagnetic control valve 150, so that the compressed gas in the air supply component 140 can be input into the outer cavity 131a of the second shell 131, so that the two sliders 133 move in opposite directions, so that the valve stem 132 can drive the valve body 122 to rotate in a second direction opposite to the first direction, so that the two ends of the air path 122a of the valve body 122 are respectively misaligned with the valve inlet 121a and the valve outlet 121b of the first shell 121, and the outer wall of the valve body 122 is blocked at the valve inlet 121a and the valve outlet 121b.

[0084] In some embodiments, as shown in FIG4 , the first screening section 420 and the second screening section 430 are double-layered screeners, configured to screen out hard carbon raw materials with a mesh size of no less than 325 mesh. The crushing section 210 is a jet mill, and the first mixing section 310 and the second mixing section 410 are vacuum mixers. The use of a double-layered screener allows for better screening of the hard carbon raw materials required for preparing hard carbon anode materials for sodium-ion batteries. Hard carbon raw materials with a mesh size greater than 325 mesh are more suitable for use as hard carbon anode materials for sodium-ion batteries.

[0085] In some embodiments, multiple feeding sections 100 are provided. The first demagnetizing section 220 and the first mixing section 310 are connected via a feeding section 100, and the first mixing section 310 and the second mixing section 410 are also connected via a feeding section 100. Providing multiple feeding sections 100 allows the hard carbon raw material to flow more smoothly through the crushing module 200, the mixing module 300, and the finished product module 400, preventing blockage of the hard carbon raw material. Furthermore, a feeding section 100 may be provided between the crushing section 210 and the first demagnetizing section 220, and a feeding section 100 may be provided between the first screening section 420, the second demagnetizing section 440, and the second screening section 430.

[0086] Finally, it should be noted that the above implementation modes are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned implementation modes, ordinary technicians in this field should understand that they can still modify the technical solutions described in the aforementioned implementation modes, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the implementation modes of the present application.

Claims

1. A device for preparing hard carbon negative electrode materials for sodium ion batteries, It is characterized in that include: A plurality of loading sections (100); a plurality of packaging sections (500); The crushing module (200) comprises a crushing part (210) and a first demagnetization part (220), wherein the crushing part (210) and the first demagnetization part (220) are connected, the feeding part (100) is connected to the crushing part (210), and the packaging part (500) is connected to the first demagnetization part (220); A mixing module (300) comprising a first mixing portion (310), wherein one end of the first mixing portion (310) is connected to the feeding portion (100), and the other end of the first mixing portion (310) is connected to the packaging portion (500); A finished product module (400) comprises a second mixing section (410), a first screening section (420), a second screening section (430) and a second demagnetization section (440), wherein the second mixing section (410), the first screening section (420), the second demagnetization section (440) and the second screening section (430) are connected in sequence, the second mixing section (410) is also connected to the feeding section (100), and the second screening section (430) is also connected to the packaging section (500); a plurality of conveying parts (600), wherein the conveying part (600) is arranged between the crushing module (200) and the mixing module (300), and the conveying part (600) is arranged between the crushing module (200) and the finished product module (400), and the conveying part (600) is used to convey the bagged hard carbon raw material; A plurality of detection members (700) are arranged in a distributed manner along the conveying direction of the conveying portion (600); the detection member (700) comprises a detection portion (710) and an irradiation portion (720); the detection portion (710) and the irradiation portion (720) are arranged to be opposite to the conveying portion (600); the detection portion (710) has a detection end; the detection end of the detection portion (710) is opposite to the bagged hard carbon raw material; the irradiation portion (720) is arranged to strobe-irradiate the bagged hard carbon raw material; and the detection portion (710) is arranged to detect the surface condition of the bagged hard carbon raw material; a processing module (800) electrically connected to the plurality of detection elements (700), wherein the processing module (800) determines the type of pollutants in the bagged hard carbon raw material according to the surface conditions of the bagged hard carbon raw material detected by the detection elements (700); The feeding part (100) comprises an air storage bag (110), a valve assembly (120), an air control part (130), an air supply part (140), an electromagnetic control valve (150) and a material storage barrel (190); the valve assembly (120) comprises a first shell (121) and a valve body (122); the valve body (122) is movably arranged in the first shell (121); the first shell (121) has a valve inlet (121a) and a valve outlet (121b) which are connected or disconnected; the valve inlet (121a) is connected to the air storage bag (110); the valve outlet (121b) is connected to the material storage barrel (190); the valve body (122) is made of a non-metallic material; and the first shell (121) is made of a corrosion-resistant material. The air control unit (130) is connected to the valve body (122), and the air control unit (130) is configured to drive the valve body (122) to switch the valve assembly (120) between a first state and a second state. When the valve assembly (120) is in the first state, the valve body (122) blocks at least one of the valve inlet (121a) and the valve outlet (121b). When the valve assembly (120) is in the second state, the valve inlet (121a) is in communication with the valve outlet (121b). The air supply component (140) is connected to the air control component (130); The electromagnetic control valve (150) is arranged between the air supply component (140) and the air control component (130).

2. The device for preparing hard carbon negative electrode material for sodium ion battery according to claim 1, It is characterized in that The first screening part (420) and the second screening part (430) are double-layer screeners, and the first screening part (420) and the second screening part (430) are configured to screen out hard carbon raw materials with a size of not less than 325 mesh; The pulverizing section (210) is a jet pulverizer, and the first mixing section (310) and the second mixing section (410) are vacuum mixers.

3. The device for preparing hard carbon negative electrode material for sodium ion battery according to claim 2, It is characterized in that There are multiple loading parts (100), the first demagnetization part (220) and the first mixing part (310) are connected through the loading part (100), and the first mixing part (310) and the second mixing part (410) are also connected through the loading part (100).

4. The device for preparing hard carbon negative electrode material for sodium ion battery according to claim 3, It is characterized in that The valve body (122) is rotatably disposed in the first housing (121); the valve body (122) is provided with an air passage (122a) penetrating the valve body (122); when the valve body (122) is in the second state, two ends of the air passage (122a) are respectively connected to the valve inlet (121a) and the valve outlet (121b).

5. The device for preparing hard carbon negative electrode material for sodium ion battery according to claim 4, It is characterized in that The valve body (122) is a sphere, the gas path channel (122a) is arranged along the axis of the valve body (122), and the valve body (122) is configured to rotate around a direction perpendicular to the axis of the valve body (122).

6. The device for preparing hard carbon negative electrode material for sodium ion battery according to claim 5, It is characterized in that The material of the valve body (122) is a non-metal composite material, and the material of the first shell (121) is at least one of stainless steel and carbon steel.

7. The device for preparing hard carbon negative electrode material for sodium ion battery according to claim 6, It is characterized in that The air control unit (130) comprises a second shell (131) and a valve stem (132); the second shell (131) has an air passage therein, the air passage is in communication with the air supply member (140); the valve stem (132) is movably disposed in the air passage, and the valve stem (132) is connected to the valve body (122).

8. The device for preparing hard carbon negative electrode material for sodium ion battery according to claim 7, It is characterized in that The air control unit (130) further comprises a slider (133), the slider (133) being movably arranged in the air passage, the slider (133) dividing the air passage into an outer cavity (131a) and an inner cavity (131b), the air supply member (140) being in communication with the outer cavity (131a), the valve stem (132) being provided with an outer tooth portion (132a) circumferentially arranged around the valve stem (132), and the slider (133) being provided with a rack portion (133a) cooperating with the outer tooth portion (132a).

9. The device for preparing hard carbon negative electrode material for sodium ion battery according to claim 8, It is characterized in that There are two sliders (133), the two sliders (133) are arranged opposite to each other, there are two outer chambers (131a), and the two outer chambers (131a) are located on opposite sides of the two sliders (133), the inner chamber (131b) is located between the two sliders (133), the valve stem (132) is arranged in the inner chamber (131b), the air supply component (140) is connected to the inner chamber (131b), and the air supply component (140) is also connected to any one of the outer chambers (131a).

10. The device for preparing hard carbon negative electrode material for sodium ion battery according to claim 9, It is characterized in that The rack parts (133a) of the two sliders (133) respectively cooperate with opposite sides of the outer tooth part (132a), and the moving directions of the two sliders (133) are parallel; The feeding part (100) further comprises a first pipeline (160) and a second pipeline (170), wherein the first pipeline (160) and the second pipeline (170) are connected to the electromagnetic control valve (150), the first pipeline (160) is also connected to the inner cavity (131b), and the second pipeline (170) is also connected to the outer cavity (131a).

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