Screening equipment for sulfide solid electrolyte powder material

Abstract

The utility model discloses screening equipment for sulfide solid electrolyte powder materials. A vacuum glove box and screening equipment arranged in the vacuum glove box are adopted. The screening technology specifically comprises the following steps that S1, a stable air environment is formed in a vacuum glove box, and then sulfide powder to be screened is put into the vacuum glove box; s2, sulfide powder to be screened is subjected to grading and batch screening of powder of 1-250 microns in the stable air environment of a vacuum glove box through special screening equipment; s3, collecting and packaging the sulfide powder subjected to graded screening; the vacuum glove box and the high-precision screening equipment are technically combined, a stable processing environment can be provided for sulfide powder, batch screening preparation of the sulfide powder is achieved while the air stability is guaranteed, the overall processing efficiency is improved, and the overall processing quality is guaranteed; and an important basis for preparing a high-performance sulfide all-solid-state lithium battery is formed.

Description

Technical Field

[0001] The utility model belongs to the technical field of sulfide powder preparation, and relates to screening equipment for sulfide solid electrolyte powder materials. Background Art

[0002] Solid-state batteries with high energy density and safety are recognized as the most promising next-generation power batteries, and sulfide solid electrolytes have the advantages of high ionic conductivity, good thermal stability, and moderate mechanical properties, making them one of the most promising solid electrolytes.

[0003] However, the low air stability and low production of sulfide solid electrolyte materials and the interface problems between many positive and negative electrode materials have hindered the industrialization of sulfide all-solid-state batteries. Utility Model Content

[0004] In order to solve the implementation technical problems, the utility model adopts the following technical solutions:

[0005] A screening device for sulfide solid electrolyte powder material, comprising: a vacuum glove box and a screening device arranged in the vacuum glove box;

[0006] The screening equipment includes: a screening box, a mesh screen and an ultrasonic vibrator;

[0007] A feed inlet is provided at the top of the screening box, and a mesh screen is provided at the feed inlet position for screening; an ultrasonic vibrator is connected and cooperated with the mesh screen, and a high-frequency vibration effect of the mesh screen is achieved through the ultrasonic vibrator;

[0008] A discharge pipe is provided at the bottom of the screening machine box, and the end of the discharge pipe is connected to the collection bucket;

[0009] The vacuum glove box includes: a vacuum box body capable of forming a stable air environment and a gas generating device for realizing the air environment inside the vacuum box body: the vacuum box body is provided with a plurality of operating ports connected to the vacuum box body, and the operating ports are equipped with mounting rings for mounting rubber gloves.

[0010] As a further solution of the utility model: a matching chassis top cover is movably installed on the top of the screening chassis of the screening equipment.

[0011] As a further solution of the utility model: the mesh screen adopts an adhesive mesh screen structure.

[0012] As a further solution of the utility model: a base support platform is arranged at the lower end of the screening machine box, and the screening machine box is lifted up by the base support platform to separate the discharge pipe from the supporting plane.

[0013] As a further solution of the utility model: the vacuum box of the vacuum glove box is further provided with a plurality of transition cabins communicated with the interior of the vacuum box, and both ends of the transition cabins are respectively provided with transition cabin doors which can be opened and closed independently.

[0014] The beneficial effects of the utility model are as follows: by combining the technologies of the vacuum glove box and the high-precision screening equipment, a stable processing environment can be provided for the sulfide powder, and batch screening and preparation of the sulfide powder can be achieved while ensuring air stability, thereby improving the overall processing efficiency and ensuring the overall processing quality, forming an important foundation for the preparation of high-performance sulfide all-solid-state lithium batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the vacuum glove box in the utility model.

[0016] Figure 2 It is a structural schematic diagram of the screening equipment in the utility model. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. It should be understood that the present application is not limited to the example embodiments disclosed herein. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0018] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 cannot be understood as a limitation on the present invention.

[0019] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0020] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] The utility model provides Figures 1-2 In an embodiment of the utility model, a screening device for sulfide solid electrolyte powder material comprises: a vacuum glove box 1 and a screening device 7 arranged in the vacuum glove box 1;

[0022] When performing screening work, it includes the following processing steps:

[0023] S1: forming a stable air environment inside the vacuum glove box 1 to ensure the stability of the screening process, and the stable air environment can be formed by filling the vacuum glove box 1 with nitrogen or argon; and then placing the sulfide powder to be screened into the vacuum glove box 1;

[0024] S2: The sulfide powder to be screened is subjected to graded batch screening of 1um-250um powders in a stable air environment of a vacuum glove box 1 through a dedicated screening device 7;

[0025] S3: Collect and package the graded and screened sulfide powders, and keep the ionic conductivity of the powders between ≥45% and ≥95%, and the ionic conductivity of the powders at room temperature between ≥2mS / cm and 25mS / cm.

[0026] Furthermore, the screening device 7 includes: a screening box 10, a mesh screen 12 and an ultrasonic vibrator 9;

[0027] The top of the screening box 10 is provided with a feed port (not shown), and a mesh screen 12 is provided at the feed port position for implementing the screening work; the ultrasonic vibrator 9 is connected and cooperated with the mesh screen 12, and the high-frequency vibration effect of the mesh screen 12 is achieved by the ultrasonic vibrator 9, and the screening effect of the sulfide powder is achieved by continuously vibrating the mesh screen 12. In order to achieve a better screening effect, the mesh screen 12 can be used with an adhesive mesh screen structure;

[0028] A discharge pipe 13 is provided at the bottom of the screening machine box 10 , and the end of the discharge pipe 13 is connected to a collection barrel 14 . The sulfide powder that has been screened is sent from the discharge pipe 13 to the collection barrel 14 for collection.

[0029] Furthermore, a matching chassis top cover 8 is movably installed on the top of the screening chassis 10 of the screening device 7. When the screening device 7 performs screening work, the feeding port of the screening device 7 is sealed by the chassis top cover 8 to improve processing stability.

[0030] Furthermore, a base support platform 11 is provided at the lower end of the screening box 10, and the screening box 10 is lifted up by the base support platform 11, so that the discharge pipe 13 is separated from the supporting plane.

[0031] Furthermore, the vacuum glove box 1 includes: a vacuum box 6 capable of forming a stable air environment and a gas generating device 5 (for the generation and filling of nitrogen or argon) for achieving the air environment in the vacuum box 6; a plurality of operating ports 2 connected to the vacuum box 6 are provided in the vacuum box 6, and a mounting ring 21 for mounting rubber gloves is installed on the operating port 2. During the screening process, the operator performs processing work inside the vacuum box 6 through the operating port 2.

[0032] In order to realize the feeding work of the vacuum box 6, a plurality of transition cabins 4 connected with the interior of the vacuum box 6 are further arranged on the vacuum box 6 of the vacuum glove box. In order to meet the feeding work of adapting to products of different quantities, the plurality of transition cabins 4 adopt transition cabins 4 of multiple size structures; and the two ends of the transition cabin 4 are respectively provided with independently opened and closed transition cabin doors. When feeding, the outer transition cabin door is opened for feeding, and the inner transition cabin door is closed. Similarly, when taking materials, the inner transition cabin door is opened for taking materials, and the outer transition cabin door is closed to ensure that the air environment inside the vacuum box 6 is not affected during the feeding process.

[0033] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "including a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0034] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A screening device for sulfide solid electrolyte powder material, characterized in that: include: A vacuum glove box and a screening device arranged in the vacuum glove box; The screening equipment includes: a screening box, a mesh screen and an ultrasonic vibrator; A feed inlet is provided at the top of the screening box, and a mesh screen is provided at the feed inlet position for screening; an ultrasonic vibrator is connected and cooperated with the mesh screen, and a high-frequency vibration effect of the mesh screen is achieved through the ultrasonic vibrator; A discharge pipe is provided at the bottom of the screening machine box, and the end of the discharge pipe is connected to the collection bucket; The vacuum glove box includes: a vacuum box body capable of forming a stable air environment and a gas generating device for realizing the air environment inside the vacuum box body: the vacuum box body is provided with a plurality of operating ports connected to the vacuum box body, and the operating ports are equipped with mounting rings for mounting rubber gloves.

2. The screening device for sulfide solid electrolyte powder material according to claim 1, characterized in that: A matching chassis top cover is movably installed on the top of the screening chassis of the screening equipment.

3. The screening device for sulfide solid electrolyte powder material according to claim 1, characterized in that: The mesh screen adopts an adhesive mesh screen structure.

4. The screening device for sulfide solid electrolyte powder material according to claim 1, characterized in that: A base support platform is arranged at the lower end of the screening machine box, and the screening machine box is lifted up by the base support platform to separate the discharge pipe from the supporting plane.

5. The screening device for sulfide solid electrolyte powder material according to claim 1, characterized in that: The vacuum box of the vacuum glove box is also provided with a plurality of transition cabins communicated with the interior of the vacuum box, and both ends of the transition cabins are respectively provided with transition cabin doors that open and close independently.

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