Lithium battery positive electrode raw material mixing device

Abstract

The utility model discloses a lithium battery positive electrode raw material mixing device which comprises a material mixing barrel, a feeding port is formed in the top of the material mixing barrel, a discharging port is formed in the bottom of the material mixing barrel, a stirring barrel is rotationally connected into the material mixing barrel, and integrated stirring blades which are arranged in a spiral rising mode are arranged on the inner wall of the stirring barrel. The spirally-rising stirring blades can convey materials upwards to a high position in the stirring process, and then the materials fall into the stirring barrel to be split under the impact effect, so that the caking phenomenon is avoided, and the mixing efficiency is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of lithium battery positive electrode material production, and particularly relates to a lithium battery positive electrode raw material mixing device. BACKGROUND

[0002] With the development of electric vehicles, electronic products and the like, the performance of lithium batteries is increasingly important, and the demand for lithium batteries is also increasing. As one of the important components, the production efficiency and product quality of lithium battery positive electrodes are also increasingly important.

[0003] In the production process of lithium battery positive electrodes, lithium sources and metal oxides need to be proportioned according to a certain ratio and then placed in a mixer for uniform mixing to improve the quality in subsequent production. The existing material mixing device is mostly a stirrer, that is, a rotating stirring blade is used to mix various materials together. In actual use, since the raw materials have a certain humidity, clumping or clumping is easy to occur during stirring, and a long time of stirring is required to achieve complete and uniform mixing, which is relatively low in efficiency.

[0004] Therefore, a new lithium battery positive electrode raw material mixing device is needed to solve the above problems. CONTENT OF THE INVENTION

[0005] In order to solve the problems of the prior art, the application provides a lithium battery positive electrode raw material mixing device, which discards the traditional stirring blade and can lift the raw materials upward to break the clumped raw materials, thereby achieving sufficient mixing.

[0006] The technical effects achieved by the application are realized by the following scheme:

[0007] According to a first aspect of the application, a lithium battery positive electrode raw material mixing device is provided, which comprises a mixing cylinder, a feeding port is arranged at the top of the mixing cylinder, a discharging port is arranged at the bottom of the mixing cylinder, a stirring cylinder is rotatably connected in the mixing cylinder, and stirring blades arranged in a spiral upward manner are arranged on the inner wall of the stirring cylinder.

[0008] Through the scheme, the stirring blades arranged in a spiral upward manner can convey the materials upward to a high position during stirring, and then drop into the stirring cylinder to be broken under the impact, thereby avoiding clumping and improving the mixing efficiency.

[0009] Preferably, a guide block is arranged in the middle of the bottom of the stirring cylinder, and the guide block is conical or hemispherical.

[0010] Through the scheme, the guide block can collide with the dropped materials and guide the materials to the stirring blades on both sides, thereby avoiding the accumulation of materials in the middle and the failure to stir.

[0011] Preferably, the bottom of the mixing barrel is hinged with a discharge door for blocking the discharge port, and the guide block is fixed to the middle of the discharge door.

[0012] Through the scheme, the area of the discharge door is increased, so that the material can be quickly and completely discharged.

[0013] Preferably, the inner wall of the mixing barrel is hung with an impact block which extends to the middle position of the stirring barrel.

[0014] Through the scheme, the dropped material can be broken by impacting the impact block during the feeding and mixing process, further improving the mixing and breaking effect.

[0015] Preferably, the impact block is semispherical or conical.

[0016] Through the scheme, the effect of guiding is achieved, avoiding the accumulation of material on the impact block affecting the mixing effect.

[0017] Preferably, the stirring blade in the upper half of the stirring barrel is more downwardly inclined as it goes upward.

[0018] Through the scheme, the material transported to the top can fall down to achieve the purpose of breaking and caking.

[0019] Preferably, the outer wall of the stirring barrel is rotationally connected with the inner wall of the mixing barrel through a bearing.

[0020] Through the scheme, the friction between the stirring barrel and the mixing barrel is reduced.

[0021] Preferably, the top of the stirring barrel is provided with a gear ring, and a driving motor is fixed to the outer wall of the mixing barrel and engaged with the gear ring through a gear.

[0022] Through the scheme, the driving motor drives the stirring barrel to rotate from the outside, avoiding the influence of high temperature on the internal material, and improving the service life of the driving motor.

[0023] According to one embodiment of the present application, the lithium battery positive electrode raw material mixing device has the beneficial effects that the vertical spiral stirring blade is creatively used to transport the material to a high place and then drop it to break the caking, avoiding the clumping during the stirring process, and greatly improving the stirring efficiency compared with the traditional stirring blade. BRIEF DESCRIPTION OF DRAWINGS

[0024] To more clearly illustrate the embodiments of this application or the existing technical solutions, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of a lithium battery cathode raw material mixing device according to an embodiment of this application;

[0026] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure of the mixing device for positive electrode raw materials of lithium batteries;

[0027] Figure 3 for Figure 2 Schematic diagram of the intermediate mixing cylinder;

[0028] Figure 4 for Figure 2 Schematic diagram of the structure of the stirring drum;

[0029] Figure 5 for Figure 4 A schematic diagram of the cross-sectional structure of the stirring blades. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] like Figures 1 to 5 As shown, a lithium battery cathode raw material mixing device in one embodiment of this application includes a mixing cylinder 100, a feed inlet 110 at the top of the mixing cylinder 100, a discharge outlet at the bottom of the mixing cylinder 100, a stirring cylinder 200 rotatably connected in the mixing cylinder 100, and a spirally arranged and integral stirring blade 210 on the inner wall of the stirring cylinder 200.

[0032] In this embodiment, the spirally rising stirring blades 210 can transport the material upward to a high place during the stirring process, and then drop it into the stirring drum 200 so that it breaks under the impact, avoiding the occurrence of agglomeration and improving the mixing efficiency.

[0033] The upper surface of the cross section of the stirring blade 210 is wavy, or the stirring blade 210 is directly bent into a wavy blade, which can improve the friction with the raw materials, and the bottom raw materials are transported to the top and then dropped down to complete the crushing process under the premise of improving the bottom stirring effect.

[0034] In an embodiment of the present application, a guide block 121 is arranged in the middle of the bottom of the stirring cylinder 200, and the guide block 121 is conical or hemispherical. The guide block 121 can collide with the falling materials and guide the materials to the stirring blades 210 on both sides to avoid the materials from piling up in the middle and being unable to be stirred.

[0035] In an embodiment of the present application, a discharge door 120 is hinged to the bottom of the mixing cylinder 100, the discharge door 120 is used to block the discharge port, and the guide block 121 is fixed to the middle of the discharge door 120. The area of the discharge door 120 is increased, so that the materials can be quickly and completely discharged.

[0036] In an embodiment of the present application, a collision block 130 is hung on the inner wall of the mixing cylinder 100, and the collision block 130 extends to the middle position of the stirring cylinder 200. During the feeding and mixing process, the falling materials can collide with the collision block 130 to complete the crushing, and the mixing and crushing effect is further improved. The collision block 130 is installed through a hanger arm, the hanger arm fixes the collision block 130, and the collision and crushing effect is improved.

[0037] In an embodiment of the present application, the collision block 130 is hemispherical or conical, and in this embodiment, it is hemispherical, and the surface is smooth, which plays a guiding role and avoids the materials from piling up on the collision block 130 to affect the mixing effect.

[0038] In an embodiment of the present application, the stirring blades 210 located in the upper half of the stirring cylinder 200 are more inclined downward as they go upward. The materials transported to the top can fall down to achieve the purpose of crushing and caking.

[0039] In an embodiment of the present application, the outer wall of the stirring cylinder 200 is rotationally connected with the inner wall of the mixing cylinder 100 through a bearing 230. The friction between the stirring cylinder 200 and the mixing cylinder 100 is reduced.

[0040] In an embodiment of the present application, a gear ring 220 is arranged at the top of the stirring cylinder 200, and a driving motor 240 is fixed to the outer wall of the mixing cylinder 100 and meshes with the gear ring 220 through a gear. The driving motor 240 drives the stirring cylinder 200 to rotate on the outside, avoids the influence of high temperature on the internal materials, and can improve the service life of the driving motor 240.

[0041] According to the embodiment, the lithium battery positive electrode raw material mixing device has the beneficial effect of using vertical spiral stirring blades to transport the material to a high position and then drop it to break the clumps, thereby avoiding clumping during the stirring process and greatly improving the stirring efficiency compared to traditional stirring blades.

[0042] It should be noted that the foregoing detailed description is illustrative, and is not to be taken as limiting the application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The entirety of any patent or non-patent literature cited herein, including U.S. Patents, U.S. Patent Publications, U.S. Patent Application Publications, U.S. Patent Applications, foreign Patents, foreign Patent Publications, and non-patent literature, is incorporated herein by reference in their entirety.

[0043] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting, unless otherwise indicated. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0044] It should be noted that the terms "first", "second", and the like, herein do not necessarily have an either chronological or spatial relation to each other, but are used merely to distinguish between two separate entities. It should be understood that the terms so used in the description are interchangeable under appropriate circumstances and embodiments of the application described herein are capable of operating in other sequences than the one explicitly described or shown.

[0045] Moreover, the terms "comprising", "having", "including", and "containing" are to be construed open-ended terms (i.e., meaning "including, but not limited to") unless otherwise noted. As such, these terms each merely indicate the presence of the referenced item "in combination with" at least one other item, and do not exclude the presence of additional one or more items.

[0046] For purposes of the description hereinafter, the terms "upper", "lower", "right", "left", "rear", "front", "vertical", "horizontal", and derivatives thereof shall relate to the application as oriented in the drawing figures. However, it is to be understood that the application can assume various alternative orientations and, accordingly, such terms are not to be taken as limitations of the present application. All such modifications and variations are considered to be within the scope of the present application.

[0047] In the detailed description above, reference is made to the accompanying drawings, which form a part hereof. In the drawings, similar symbols typically identify similar components, unless context dictates otherwise. The illustrative embodiments described in the detailed description, drawings, and claims are not meant to be limiting. Other embodiments can be used, and other changes can be made, without departing from the spirit or scope of the subject matter presented herein.

[0048] The above merely provides preferred embodiments of the present application and is not intended to limit the present application. The present application can have various modifications and changes, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A lithium battery positive electrode raw material mixing device, comprising a mixing cylinder, a feeding port is arranged at the top of the mixing cylinder, and a discharging port is arranged at the bottom of the mixing cylinder, characterized in that, The mixing barrel is rotationally connected with a stirring barrel, and the inner wall of the stirring barrel is provided with helically arranged and integrated stirring blades.

2. The lithium battery cathode material mixing device according to claim 1, characterized in that, A guide block is arranged in the middle of the bottom of the stirring barrel, and the guide block is conical or hemispherical.

3. The lithium battery cathode material mixing device according to claim 2, characterized in that, A discharge door is hingedly connected to the bottom of the mixing barrel, the discharge door is used to block the discharge port, and the guide block is fixed to the middle of the discharge door.

4. The lithium battery cathode material mixing device according to claim 1, characterized in that, A striking block is hung on the inner wall of the mixing barrel, and the striking block extends into the middle position of the stirring barrel.

5. The lithium battery cathode material mixing device according to claim 4, wherein, The striking block is hemispherical or conical.

6. The lithium battery cathode material mixing device according to claim 4, characterized in that, The stirring blades located in the upper half of the stirring barrel are more inclined downward as they go upward.

7. The lithium battery cathode material mixing device according to claim 1, characterized in that, The outer wall of the stirring barrel is rotationally connected with the inner wall of the mixing barrel through a bearing.

8. The lithium battery cathode material mixing device according to claim 7, characterized in that, The top of the stirring barrel is provided with a gear ring, and a driving motor is fixed to the outer wall of the mixing barrel and engaged with the gear ring through a gear.

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