Vibrating screen device for battery cathode materials

Abstract

This utility model discloses a vibrating screen device for battery cathode materials, comprising: a housing with a cavity inside suitable for accommodating materials, the housing also being provided with a screening assembly having a screening port communicating with the cavity; a vibration assembly adapted to drive at least a portion of the materials in the cavity through the screening port; and an antistatic assembly adapted to eliminate the charge carried by the materials in the cavity. The vibrating screen device for battery cathode materials designed according to this utility model includes an antistatic assembly, which can eliminate static electricity on the surface of the materials, thereby improving the screening efficiency of the vibrating screen device and the production capacity of cathode materials.

Description

Technical Field

[0001] This utility model relates to the field of industrial processing equipment, and in particular to a vibrating screen device for battery cathode materials. Background Technology

[0002] Lithium-ion batteries are the most widely used rechargeable batteries on the market today, and the material on the positive electrode is one of the key factors determining battery performance. The production of positive electrode materials generally employs a secondary sintering process, with vibrating sieving being a crucial step in this process. Vibrating sieving efficiency and capacity play a vital role in the smooth operation of subsequent manufacturing processes. However, during vibrating sieving, charged materials may agglomerate, posing a risk of clogging the vibrating sieving structure and thus affecting its screening efficiency and the production capacity of the positive electrode material.

[0003] In some existing technologies, vibrating screen structures can work in conjunction with ultrasonic structures to achieve material screening by combining mechanical and ultrasonic vibration. Mechanical vibrating screens can achieve uniform dispersion, rapid stratification, and graded screening of materials, while ultrasonic vibrations convert electrical energy into mechanical energy to break the surface tension of materials through high-frequency mechanical vibration, thereby reducing electrostatic adsorption. However, this method has limited effectiveness in eliminating static electricity on the material surface and is inefficient. There is still a risk of charged materials agglomerating and clumping, as well as the risk of clumped materials clogging the vibrating screen structure. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide a vibrating screen device for battery cathode materials. The vibrating screen device for battery cathode materials designed according to this invention includes an antistatic component, which can eliminate static electricity on the material surface, thereby improving the screening efficiency of the vibrating screen device and the production capacity of cathode materials.

[0005] The vibrating sieve device for battery positive electrode materials according to the present invention includes: a housing, wherein the housing has a cavity formed inside suitable for accommodating materials, and the housing is further provided with a screening assembly having a screening port communicating with the cavity; a vibration assembly adapted to drive at least a portion of the materials in the cavity through the screening port; and an antistatic assembly adapted to eliminate the charge carried by the materials in the cavity.

[0006] The vibrating screen device for battery cathode materials according to this utility model is designed with an antistatic component. The antistatic component is used to eliminate the charge carried by the material, minimize the static electricity on the surface of the material, and avoid the problem of material agglomeration due to static electricity on the surface, thereby avoiding agglomeration and clogging of the screen opening. Moreover, the method of eliminating static electricity on the surface of the material to prevent material agglomeration by using the antistatic component is simple and convenient to operate, has better antistatic effect, higher efficiency, and can improve the screening efficiency of the vibrating screen device and the production capacity of cathode materials.

[0007] According to some embodiments of the present invention, the static eliminator is disposed in the housing and at least partially located in the receiving cavity, and the static eliminator is adapted to ionize the gaseous medium in the receiving cavity to neutralize the charge carried by the material in the receiving cavity.

[0008] According to some embodiments of the present invention, the box body includes: a box body, one end of which is open and the screening assembly is disposed inside; a cover, which covers the open end of the box body and together with the box body defines the receiving cavity; wherein the static elimination assembly includes an ion rod, which is disposed on the cover and at least part of the ion rod passes through the cover and is located in the receiving cavity, and the ion rod is adapted to ionize the gas medium in the receiving cavity after being energized.

[0009] According to some embodiments of the present invention, the static eliminator is connected to the receiving cavity through a pipeline, and the static eliminator is adapted to introduce the ionized gas medium into the receiving cavity through the pipeline in order to neutralize the charge carried by the material in the receiving cavity.

[0010] According to some embodiments of the present invention, the vibration assembly includes: a driving member connected to the housing; wherein the driving member is adapted to drive at least a portion of the material in the receiving cavity to vibrate; and / or the driving member is adapted to drive the housing and / or the screening assembly to vibrate.

[0011] According to some embodiments of the present invention, the driving component includes a driving motor, the driving motor having a driving end, the driving end being connected to the housing to drive the housing and / or the screening assembly to vibrate.

[0012] According to some embodiments of the present invention, the vibrating screen device for battery positive electrode materials further includes: a base, the base being located at the bottom of the housing in the height direction and connected to the housing, and the drive motor being disposed on the base; wherein the drive end is configured as a drive block, the drive block being movably disposed on the housing, and the drive block being adapted to move under the drive of the drive motor.

[0013] According to some embodiments of the present invention, the driving component further includes a blower structure having a communication port communicating with the receiving cavity. The blower structure is adapted to introduce a high-speed airflow into the receiving cavity through the communication port to drive at least a portion of the material in the receiving cavity to vibrate.

[0014] According to some embodiments of the present invention, the vibration assembly further includes an ultrasonic component, which is connected to the housing and adapted to drive at least a portion of the material to vibrate.

[0015] According to some embodiments of the present invention, the ultrasonic component includes: an ultrasonic generator adapted to emit an electrical signal; a transducer communicatively connected to the ultrasonic generator and having a movable vibrating end connected to the housing; the transducer being adapted to receive the electrical signal and convert the electrical signal into a driving signal to drive the transducer to move relative to the housing through the vibrating end.

[0016] In summary, the vibrating screen device for battery cathode materials according to this utility model is designed with an antistatic component, which can eliminate the charge carried by the material and avoid the problem of material agglomeration due to static electricity on the surface, thereby avoiding agglomeration and clogging of the screen opening. Moreover, it is simple and convenient to operate, has a better antistatic effect, and is more efficient, which can improve the screening efficiency of the vibrating screen device and the production capacity of cathode materials.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic diagram of a vibrating screen device for battery cathode materials according to an embodiment of the present invention.

[0020] Figure label:

[0021] 1. Vibrating screen device; 2. Box body; 3. Cover; 4. Ion bar; 5. Base; 6. Ultrasonic generator; 7. Transducer; 8. Vibrating end. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0027] Lithium-ion batteries are the most widely used rechargeable batteries on the market today, and the material on the positive electrode is one of the key factors determining battery performance. The production of positive electrode materials generally employs a secondary sintering process, with vibrating sieving being a crucial step in this process. Vibrating sieving efficiency and capacity play a vital role in the smooth operation of subsequent manufacturing processes. However, during vibrating sieving, charged materials may agglomerate, posing a risk of clogging the vibrating sieving structure and thus affecting its screening efficiency and the production capacity of the positive electrode material.

[0028] In some existing technologies, vibrating screen structures can work in conjunction with ultrasonic structures to achieve material screening by combining mechanical and ultrasonic vibration. Mechanical vibrating screens can achieve uniform dispersion, rapid stratification, and graded screening of materials, while ultrasonic vibrations convert electrical energy into mechanical energy to break the surface tension of materials through high-frequency mechanical vibration, thereby reducing electrostatic adsorption. However, this method has limited effectiveness in eliminating static electricity on the material surface and is inefficient. There is still a risk of charged materials agglomerating and clumping, as well as the risk of clumped materials clogging the vibrating screen structure.

[0029] The following is for reference. Figure 1 This invention describes a vibrating sieve device 1 for battery positive electrode materials according to an embodiment of the present invention.

[0030] like Figure 1 As shown, the vibrating sieve device 1 for battery positive electrode materials according to this utility model includes: a housing, a vibrating component, and an antistatic component. The housing has an internal cavity suitable for accommodating materials. The housing also includes a screening component with a screening port communicating with the cavity. The vibrating component is adapted to drive at least a portion of the materials in the cavity through the screening port. The antistatic component is adapted to eliminate the charge carried by the materials in the cavity. Specifically, the vibrating component can vibrate to uniformly disperse and rapidly stratify the materials in the cavity. Smaller particles in the materials can pass through the screening port of the screening component, while larger particles remain in the cavity. Furthermore, the housing also has a discharge port communicating with the cavity, and the larger particles remaining in the cavity move towards the discharge port, thereby achieving graded screening of the materials.

[0031] According to this utility model, the vibrating screen device 1 for battery cathode materials is designed with an antistatic component. The antistatic component is used to eliminate the charge carried by the material, minimize the static electricity on the surface of the material, and avoid the problem of material agglomeration due to static electricity on the surface, thereby avoiding agglomeration and clogging of the screen opening. Moreover, the method of eliminating static electricity on the surface of the material to prevent material agglomeration by using the antistatic component is simple and convenient to operate, has better antistatic effect, and higher efficiency, which can improve the screening efficiency of the vibrating screen device 1 and the production capacity of cathode materials.

[0032] In some embodiments, the static eliminator can generate a large number of positively and negatively polarized gaseous ions by ionizing a gaseous medium, and then transport them to the surface of charged material molecules to neutralize the surface charge, thereby achieving the purpose of efficiently and reliably eliminating static electricity from the object's surface. The placement and specific structure of the static eliminator can be designed according to actual conditions.

[0033] According to some embodiments of this utility model, the antistatic component is disposed in the housing and at least partially located in the receiving cavity. The antistatic component is adapted to ionize the gaseous medium in the receiving cavity to neutralize the charge carried by the material in the receiving cavity. That is, the antistatic component is disposed in the housing and at least partially located in the receiving cavity, at which time the antistatic component can contact the gaseous medium in the receiving cavity. Here, the gaseous medium can refer to the air in the receiving cavity. The antistatic component can ionize air molecules, generate a large number of positive and negative polarity air ions, and transport them to the surface of the electrostatically charged material molecules to neutralize the positive and negative electrostatic charges.

[0034] Furthermore, such as Figure 1 As shown, the enclosure includes a main body 2 and a cover 3. One end of the main body 2 is open, and a screening assembly is installed inside. The cover 3 covers the open end of the main body 2 and, together with the main body 2, defines a receiving cavity. The static eliminator includes an ion rod 4, which is disposed on the cover 3, with at least a portion of the ion rod 4 passing through the cover 3 and located within the receiving cavity. The ion rod 4 is adapted to ionize the gaseous medium in the receiving cavity after being energized. In some embodiments, the ion rod 4 can be mounted on the cover 3 using mounting brackets. The ion rod 4 uses a DC high-voltage power supply and employs tungsten electrodes. Positive and negative DC high voltages are alternately applied to the coupled electrode needle, i.e., the DC high-voltage source uses AC to act on the electrode needle through the coupling device to generate corona discharge, thereby ionizing the gaseous medium in the receiving cavity. The static eliminator, in the form of an ion rod 4, is inexpensive, easy to install, and has good applicability.

[0035] According to some embodiments of this utility model, the static eliminator is connected to the receiving cavity via a pipeline. The static eliminator is suitable for introducing ionized gaseous media into the receiving cavity through the pipeline to neutralize the charge carried by the material in the receiving cavity. That is, the static eliminator can be installed within the housing or exist independently of the housing, as long as it can be connected to the receiving cavity of the housing through the pipeline. The specific location of the static eliminator is not limited. The static eliminator can introduce ionized gaseous media into the receiving cavity through the pipeline. The static eliminator can ionize the gaseous media, generating a large number of positive and negative polarity gaseous media ions, and introduce these ions into the receiving cavity through the pipeline, allowing the gaseous media ions to contact the electrostatically charged material molecules, thereby neutralizing the positive and negative electrostatic charges of the material molecules.

[0036] According to some embodiments of this utility model, the vibration assembly includes a driving member connected to the housing. The driving member is adapted to drive at least a portion of the material within the receiving cavity to vibrate; and / or, the driving member is adapted to drive the housing and / or the screening assembly to vibrate. Here, the driving member can directly drive at least a portion of the material within the receiving cavity to vibrate via methods such as blowing air, so that at least a portion of the material passes through the screening port. Alternatively, the driving member can drive the housing and / or the screening assembly to vibrate, thereby causing the material within the receiving cavity to vibrate and allowing at least a portion of the material to pass through the screening port. The specific driving form and method of the driving member can be designed according to actual conditions and are not limited here.

[0037] According to some embodiments of this utility model, such as Figure 1 As shown, the driving component includes a drive motor with a drive end connected to the housing to drive the housing and / or the screening assembly to vibrate. In other words, the drive motor can indirectly drive material vibration by driving the housing and / or the screening assembly to vibrate. In some embodiments, the drive motor can be located inside or outside the housing and connected to the housing to drive the housing to vibrate, thereby causing the material to vibrate. Alternatively, the drive motor can be connected to the screening assembly to drive the screening assembly to vibrate, thereby causing the material to vibrate. The choice can be made according to actual needs and is not limited here.

[0038] According to some embodiments of this utility model, such as Figure 1 As shown, the vibrating sieve device 1 for battery positive electrode materials also includes a base 5, which is located at the bottom of the housing in the height direction and connected to the housing. A drive motor is disposed on the base 5. The drive end is constructed as a drive block, which is movably disposed in the housing and adapted to move under the drive of the drive motor. Specifically, the housing can be fixedly connected to the base 5, and the drive motor can drive the housing to vibrate through the drive end. The housing can then transmit the vibration to the material, allowing the material to pass through the sieve opening. The drive end is a drive block. In some embodiments, the drive block is eccentrically disposed on the surface of the housing and adapted to rotate at high speed along the axis, thereby driving the housing and the screening assembly to vibrate, and further driving the material to vibrate. Further, the drive block is constructed as two distributed at the top and bottom of the housing in the height direction.

[0039] According to some embodiments of this utility model, the driving component further includes a blower structure. The blower structure has a communication port communicating with the receiving cavity. The blower structure is adapted to introduce a high-speed airflow into the receiving cavity through the communication port to drive at least a portion of the material in the receiving cavity to vibrate. That is, the blower structure can directly drive at least a portion of the material in the receiving cavity to vibrate by blowing air, so that at least a portion of the material passes through the sieve opening. In some embodiments, the vibrating screen device 1 only uses the blower structure to blow air to directly drive at least a portion of the material to vibrate. In other embodiments, the vibrating screen device 1 can simultaneously use the blower structure to blow air to directly drive the material to vibrate and the driving component to drive the housing and / or the screening assembly to vibrate to indirectly drive the material to vibrate. The choice can be made according to actual needs and is not limited here.

[0040] According to some embodiments of this utility model, such as Figure 1 As shown, the vibration assembly also includes an ultrasonic component, which is connected to the housing and adapted to drive at least a portion of the material to vibrate. Specifically, the ultrasonic component converts ordinary current into a high-frequency (typically 18–40 kHz) electrical signal, and then converts the high-frequency electrical signal into mechanical vibration. The ultrasonic component is connected to the housing to transmit the mechanical vibration to the housing, causing the housing to generate high-frequency micro-amplitude vibrations (amplitude approximately 1–5 μm). The driving component and the ultrasonic component work together; the driving component disperses the material, making it evenly spread and layered, while the ultrasonic component further vibrates the material through high-frequency micro-amplitude vibration. Furthermore, the high-frequency vibration of the ultrasonic component can disrupt the surface tension of the material, reduce electrostatic adsorption, prevent fine powder from clogging the sieve opening, and improve the fine powder penetration rate. The antistatic component combined with the ultrasonic component ensures the cleanliness of the screening assembly and extends the service life of the vibrating screen device 1.

[0041] According to some embodiments of this utility model, such as Figure 1 As shown, the ultrasonic component includes an ultrasonic generator 6 and a transducer 7. The ultrasonic generator 6 is adapted to emit electrical signals. The transducer 7 is communicatively connected to the ultrasonic generator 6 and has a movable vibrating end 8. The vibrating end 8 is connected to the housing. The transducer 7 is adapted to receive electrical signals and convert them into drive signals to drive relative movement between the transducer 7 and the housing via the vibrating end 8. Specifically, the transducer 7 converts the high-frequency electrical energy generated by the ultrasonic generator 6 into high-frequency sinusoidal vibration waves, which are transmitted to the housing via the vibrating end 8. This further achieves material screening through high-frequency micro-amplitude vibration. It can also disrupt the surface tension of the material through high-frequency vibration, reducing electrostatic adsorption. Combined with an anti-static component, it can prevent fine powder from clogging the sieve opening, improve the fine powder penetration rate, and ensure the cleanliness of the screening component.

[0042] In summary, the vibrating screen device 1 for battery cathode materials according to this utility model is designed with an antistatic component, which can eliminate the charge carried by the material and avoid the problem of material agglomeration due to static electricity on the surface, thereby avoiding agglomeration and clogging of the screen opening. Moreover, it is simple and convenient to operate, has a better antistatic effect, and is more efficient, which can improve the screening efficiency of the vibrating screen device 1 and the production capacity of cathode materials.

[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0044] Although embodiments of the present invention have been shown and described above, variations, modifications, substitutions and alterations can be made to the above embodiments.

Claims

1. A vibrating sieve device (1) for battery positive electrode materials, characterized in that, include: The box body has an internal cavity suitable for containing materials, and the box body is also provided with a screening assembly, which has a screening port communicating with the cavity. A vibration assembly adapted to drive at least a portion of the material within the receiving cavity through the sieve opening; An antistatic assembly, the antistatic assembly being adapted to eliminate the charge carried by the material within the receiving cavity.

2. The vibrating sieve device (1) for battery positive electrode materials according to claim 1, characterized in that, The static eliminator is disposed in the housing and at least partially located in the containment cavity, and the static eliminator is adapted to ionize the gaseous medium in the containment cavity to neutralize the charge carried by the material in the containment cavity.

3. The vibrating sieve device (1) for battery positive electrode materials according to claim 2, characterized in that, The enclosure includes: The box body (2) has one open end and the screening assembly is provided inside; A cover (3) is provided on the open end of the box body (2) and together with the box body (2) defines the receiving cavity; wherein The static eliminator includes an ion rod (4), which is disposed on the cover (3) and at least part of the ion rod (4) passes through the cover (3) and is located in the receiving cavity. The ion rod (4) is adapted to ionize the gas medium in the receiving cavity after being energized.

4. The vibrating sieve device (1) for battery positive electrode materials according to claim 1, characterized in that, The static eliminator is connected to the containment cavity via a pipeline. The static eliminator is adapted to introduce the ionized gaseous medium into the containment cavity through the pipeline to neutralize the charge carried by the material in the containment cavity.

5. The vibrating sieve device (1) for battery positive electrode materials according to claim 1, characterized in that, The vibration assembly includes: A driving component, which is connected to the housing; wherein The drive element is adapted to drive at least a portion of the material within the receiving cavity to vibrate; and / or The drive unit is adapted to drive the housing and / or the screening assembly to vibrate.

6. The vibrating sieve device (1) for battery positive electrode materials according to claim 5, characterized in that, The driving component includes a drive motor, which has a drive end connected to the housing to drive the housing and / or the screening assembly to vibrate.

7. The vibrating sieve device (1) for battery positive electrode materials according to claim 6, characterized in that, Also includes: A base (5) is located at the bottom of the housing in the height direction and connected to the housing; the drive motor is disposed on the base (5); wherein The drive end is constructed as a drive block, which is movably disposed in the housing and is adapted to move under the drive of the drive motor.

8. The vibrating sieve device (1) for battery positive electrode materials according to claim 5 or 6, characterized in that, The driving component further includes a blower structure having a communication port communicating with the receiving cavity. The blower structure is adapted to introduce a high-speed airflow into the receiving cavity through the communication port to drive at least a portion of the material in the receiving cavity to vibrate.

9. The vibrating sieve device (1) for battery positive electrode materials according to claim 5, characterized in that, The vibration assembly also includes: An ultrasonic component, the ultrasonic component being connected to the housing and adapted to drive at least a portion of the material to vibrate.

10. The vibrating sieve device (1) for battery positive electrode materials according to claim 9, characterized in that, The ultrasonic component includes: An ultrasonic generator (6) is adapted to emit an electrical signal; A transducer (7) is communicatively connected to the ultrasonic generator (6) and has a movable vibrating end (8). The vibrating end (8) is connected to the housing. The transducer (7) is adapted to receive the electrical signal and convert the electrical signal into a driving signal so as to drive the transducer (7) to move relative to the housing through the vibrating end (8).

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