Special mixing tank for sodium ion battery positive electrode material
By introducing deblocking and stirring components into the sodium ion battery positive electrode material mixing tank, the mixing uniformity and thoroughness problems caused by raw material agglomeration are solved, and a better mixing effect is achieved.
Patent Information
- Application Number
- CN202421238681.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-03
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-06-03
AI Technical Summary
The raw materials of the positive electrode material of sodium ion battery are prone to agglomeration after a long storage time, resulting in the need to improve mixing uniformity and thoroughness.
A special mixing tank for the positive electrode material of sodium ion battery was designed, including a deblocking assembly and a stirring assembly. The deblocking assembly is crushed through the high-speed rotating deblocking plate and the collision plate. After filtering, the filter is entered into the stirring assembly for stirring and mixing, and the spiral agitator realizes cyclic stirring.
Through the synergy between the unblocking and the stirring assembly, the mixing uniformity and thoroughness of the raw materials with the conductive agent and the binder are significantly improved, and the agglomeration problem is solved.
Smart Images
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Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sodium ion battery production, in particular to a special mixing tank for positive electrode materials of sodium ion batteries. Background Art
[0002] The positive electrode of a sodium ion battery usually uses sodium compounds as materials, commonly used ones include sodium oxide, sodium phosphate, etc. The raw materials are evenly mixed with a conductive agent and a binder to form a mixture of positive electrode materials, the mixture is coated on a conductive substrate to form a positive electrode sheet, and then the positive electrode sheet is dried. After drying, it can be cut into the required size. When mixing the raw materials with the conductive agent and the binder, a mixing tank is required. The raw materials are added to the mixing tank and stirred and mixed by a stirring structure in the mixing tank, so that the raw materials are mixed with the conductive agent and the binder to finally form a mixture for making the positive electrode.
[0003] When the common special mixing tank for sodium-ion battery positive electrode materials is in use, the raw materials, conductive agent and binder are added into the mixing tank for stirring and mixing. However, the raw materials are in powder form and are prone to agglomeration after being stored for a long time. The agglomerated raw materials are mixed with the conductive agent and binder in the mixing tank without being deagglomerated. The uniformity and thoroughness of the mixing need to be improved. Utility Model Content
[0004] The utility model provides a special mixing tank for positive electrode materials of sodium ion batteries, which has the advantage of more uniform and thorough mixing, so as to solve the problems raised in the background technology.
[0005] In order to achieve the purpose of more uniform and thorough mixing, the utility model provides the following technical solution: a special mixing tank for sodium ion battery positive electrode materials, including a stirring drum, and also including:
[0006] A deblocking assembly, wherein an upper cylinder is fixed on the mixing cylinder, and the deblocking assembly comprises a deblocking motor fixed on the upper cylinder, a rotating shaft is fixed to the output shaft of the deblocking motor, a deblocking plate and a collision plate are respectively fixed to the side of the rotating shaft, and a filter screen is fixed to the inner wall of the upper cylinder, and the filter screen is used to filter the deblocked raw materials;
[0007] A stirring component is arranged in the stirring barrel and is used for stirring and mixing the raw materials after being filtered by the filter screen.
[0008] As a preferred technical solution of the utility model, the deblocking plate includes a square plate fixed on the side of the rotating shaft, on which a crushing bar for crushing the agglomerated raw materials is fixed, and the square plate is also provided with a long groove for the crushed raw materials to pass through.
[0009] As a preferred technical solution of the utility model, the square plate is located above the collision plate, and the square plate and the collision plate are perpendicular to each other.
[0010] As a preferred technical solution of the utility model, the crushing bar is in the shape of an isosceles triangle, and the tip of the crushing bar faces the rotation direction of the deblocking motor.
[0011] As a preferred technical solution of the utility model, the stirring assembly includes a stirring motor fixed at the bottom of the stirring drum, a spiral stirrer for stirring and mixing the filtered raw materials is fixed at the end of the output shaft of the stirring motor, a partition cover is fixed to the inner wall of the stirring drum through a connecting column, and the spiral stirrer is located inside the partition cover.
[0012] As a preferred technical solution of the utility model, a paddle is fixed on the side of the spiral agitator, and the bottom of the paddle is movably connected to the bottom of the inner wall of the mixing drum.
[0013] As a preferred technical solution of the utility model, the bottom of the inner wall of the mixing drum is a downwardly curved surface, and the shape of the paddle is adapted to the shape of the mixing drum.
[0014] Compared with the prior art, the utility model provides a special mixing tank for positive electrode materials of sodium ion batteries, which has the following beneficial effects:
[0015] 1. The special mixing tank for positive electrode materials of sodium ion batteries adds raw materials, conductive agents and binders into the upper cylinder through the setting of the deblocking component. The deblocking plate and the collision plate of the deblocking component rotate at high speed to realize the collision, crushing and dispersion of the agglomerated raw materials, and then enter the mixing cylinder below for stirring and mixing after being filtered through the filter. At the same time, the smaller agglomerated materials trapped above the filter are further collided, crushed and dispersed by the collision plate, so that the dispersion of the agglomerated materials is more comprehensive and thorough, so that the mixing of the raw materials, the conductive agent and the binder is more uniform and thorough.
[0016] 2. The special mixing tank for positive electrode materials of sodium ion batteries is provided with a stirring component. The raw materials, conductive agent and binder enter the stirring component and are stirred and mixed by the stirring component. Meanwhile, during the stirring and mixing process, the spiral stirrer is used to realize cyclic stirring, so that the mixing is further more complete and uniform. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0018] Figure 2 This is a schematic diagram of the structure of the rotating shaft of the utility model;
[0019] Figure 3 This is a schematic diagram of the structure of the deblocking component of the utility model;
[0020] Figure 4 It is a structural schematic diagram of the spiral agitator of the utility model.
[0021] In the figure: 1. mixing drum; 2. upper drum; 3. deblocking assembly; 31. deblocking motor; 32. rotating shaft; 33. deblocking plate; 331. square plate; 332. crushing bar; 34. collision plate; 35. filter screen; 4. stirring assembly; 41. stirring motor; 42. partition cover; 43. spiral stirrer; 44. paddle plate. DETAILED DESCRIPTION
[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0023] See also Figure 1-4 The utility model discloses a special mixing tank for positive electrode materials of sodium ion batteries, comprising a mixing drum 1, and also comprising:
[0024] A deblocking assembly 3, wherein an upper cylinder 2 is fixed on the mixing cylinder 1, and the deblocking assembly 3 comprises a deblocking motor 31 fixed on the upper cylinder 2, the deblocking motor 31 is powered by an external power supply, a rotating shaft 32 is fixed to the output shaft of the deblocking motor 31, and a deblocking plate 33 and a collision plate 34 are respectively fixed to the sides of the rotating shaft 32, and the deblocking motor 31 drives the deblocking plate 33 and the collision plate 34 to rotate through the rotating shaft 32 to achieve the crushing of the agglomerated raw materials, a filter screen 35 is fixed to the inner wall of the upper cylinder 2, and the raw materials larger than the mesh diameter of the filter screen 35 are retained on the filter screen 35, and the collision plate 34 further deblocks and crushes the raw materials on the filter screen 35 during the rotation process, and the filter screen 35 is used to filter the deblocked raw materials;
[0025] The stirring component 4 is arranged in the stirring drum 1, and is used for stirring and mixing the raw materials after being filtered by the filter screen 35. The stirring component 4 can realize the circulation stirring of the raw materials, the conductive agent and the binder, so that the stirring and mixing are more uniform, sufficient and thorough. A discharge pipe is installed at the bottom of the stirring drum 1, and a valve is installed at the discharge pipe. When the valve is opened, the mixture composed of the raw materials, the conductive agent and the binder in the stirring drum 1 can be discharged from the discharge pipe, and the valve can be closed to prevent it from being discharged.
[0026] Specifically, the deagglomerating plate 33 includes a square plate 331 fixed to the side of the rotating shaft 32, on which a crushing bar 332 for crushing the agglomerated raw materials is fixed, and the square plate 331 is also provided with a long groove for the crushed raw materials to pass through.
[0027] In this implementation plan, please refer to Figure 3The rotating shaft 32 drives the square plate 331 and the crushing bars 332 on the square plate 331 to rotate. The crushing bars 332 first contact the agglomerated raw materials, and the crushed raw materials pass through the long grooves on the square plate 331.
[0028] Specifically, the square plate 331 is located above the collision plate 34 , and the square plate 331 and the collision plate 34 are perpendicular to each other.
[0029] In this implementation plan, please refer to Figure 3 The square plates 331 and the collision plates 34 are arranged alternately. The square plates 331 break up the agglomerated raw materials in the falling process, and the collision plates 34 break up the raw materials accumulated on the filter screen 35.
[0030] Specifically, the crushing bar 332 is in the shape of an isosceles triangle, and the tip of the crushing bar 332 faces the rotation direction of the deblocking motor 31 .
[0031] In this implementation plan, please refer to Figure 3 The tip of the isosceles triangle faces the rotation direction of the deagglomerating motor 31, so that when the square plate 331 drives the crushing bar 332 to rotate, the tip of the crushing bar 332 first contacts the agglomerated raw materials, thereby achieving the crushing and deagglomerating processing of the agglomerated materials.
[0032] Specifically, the stirring assembly 4 includes a stirring motor 41 fixed at the bottom of the stirring drum 1, and a spiral stirrer 43 for stirring and mixing the filtered raw materials is fixed at the end of the output shaft of the stirring motor 41. A partition cover 42 is fixed to the inner wall of the stirring drum 1 through a connecting column, and the spiral stirrer 43 is located inside the partition cover 42.
[0033] In this implementation plan, please refer to Figure 2 and Figure 4 The stirring motor 41 is powered by an external power supply. The stirring motor 41 drives the spiral stirrer 43 to rotate. The spiral stirrer 43 stirs the raw material and drives the conductive agent and the binder to surge upward. The surging raw material then flows downward from the outside of the partition cover 42 to the bottom position of the inner wall of the stirring drum 1, and then is driven by the spiral stirrer 43 to surge upward again, thereby realizing the cyclic stirring and mixing of the raw material, the conductive agent and the binder, so that the mixing is more sufficient and thorough.
[0034] Specifically, a paddle 44 is fixed to the side of the spiral agitator 43 , and the bottom of the paddle 44 is movably connected to the bottom of the inner wall of the mixing drum 1 .
[0035] In this implementation plan, please refer to Figure 2 During the rotation of the paddle 44, the mixture is moved to the discharge pipe to achieve the dropping of the mixture.
[0036] Specifically, the bottom of the inner wall of the mixing drum 1 is a curved surface that bends downward, and the shape of the paddle 44 is adapted to the shape of the mixing drum 1 .
[0037] In this implementation plan, please refer to Figure 2 , to gather the mixture, and during the rotation of the paddle 44, the mixture can be pushed to the discharge pipe at the bottom of the mixing drum 1 for discharge.
[0038] The working principle and use process of the utility model are as follows: open the lid of the feed port at the top of the upper cylinder 2, add the raw materials, the conductive agent and the binder into the upper cylinder 2, then tighten the lid on the feed port, start the deblocking motor 31, the deblocking motor 31 drives the deblocking plate 33 and the collision plate 34 to rotate at high speed through the rotating shaft 32, and the deblocking plate 33 and the collision plate 34 cooperate to realize the collision, crushing and dispersion of the agglomerated raw materials, and then the agglomerated raw materials are filtered through the filter screen 35 and enter the mixing cylinder 1 below for stirring and mixing, and at the same time, the smaller agglomerated materials trapped above the filter screen 35 are further collided, crushed and dispersed by the collision plate 34, so that the dispersion of the agglomerated materials is more comprehensive and thorough;
[0039] The deblocked raw materials, together with the conductive agent and the binder, enter the mixing drum 1, and the mixing motor 41 drives the spiral stirrer 43 to rotate. The spiral stirrer 43 stirs the raw materials and drives the conductive agent and the binder to surge upward. The surging raw materials then flow downward from the outside of the partition cover 42 to the bottom position of the inner wall of the mixing drum 1, and then are driven by the spiral stirrer 43 to surge upward again, thereby realizing the cyclic stirring and mixing of the raw materials, the conductive agent and the binder, so that the mixing is more sufficient and thorough. After the stirring and mixing is completed, the discharge pipe at the bottom of the mixing drum 1 is opened to allow the mixture to fall from the discharge pipe. Then, during the dropping process, the paddle 44 still rotates with the spiral stirrer 43, so as to push the mixture at other positions to the discharge pipe for dropping.
[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A special mixing tank for sodium ion battery positive electrode materials, comprising a mixing drum (1), characterized in that: Also includes: A deagglomeration assembly (3), wherein an upper cylinder (2) is fixed on the mixing cylinder (1), and the deagglomeration assembly (3) comprises a deagglomeration motor (31) fixed on the upper cylinder (2), a rotating shaft (32) is fixed to the output shaft of the deagglomeration motor (31), a deagglomeration plate (33) and a collision plate (34) are respectively fixed to the side of the rotating shaft (32), and a filter screen (35) is fixed to the inner wall of the upper cylinder (2), and the filter screen (35) is used to filter the deagglomerated raw materials; A stirring component (4) is arranged in the stirring drum (1) and is used to stir and mix the raw materials after being filtered through the filter screen (35).
2. A special mixing tank for sodium ion battery positive electrode materials according to claim 1, characterized in that: The deagglomerating plate (33) comprises a square plate (331) fixed to the side of the rotating shaft (32), a crushing bar (332) for crushing agglomerated raw materials is fixed on the square plate (331), and a long groove for the crushed raw materials to pass through is also provided on the square plate (331).
3. A special mixing tank for sodium ion battery positive electrode materials according to claim 2, characterized in that: The square plate (331) is located above the collision plate (34), and the square plate (331) and the collision plate (34) are perpendicular to each other.
4. A special mixing tank for sodium ion battery positive electrode materials according to claim 2, characterized in that: The crushing bar (332) is in the shape of an isosceles triangle, and the tip of the crushing bar (332) faces the rotation direction of the deblocking motor (31).
5. A special mixing tank for sodium ion battery positive electrode materials according to claim 1, characterized in that: The stirring assembly (4) comprises a stirring motor (41) fixed at the bottom of the stirring drum (1); a spiral stirrer (43) for stirring and mixing the filtered raw materials is fixed at the end of the output shaft of the stirring motor (41); a partition cover (42) is fixed to the inner wall of the stirring drum (1) via a connecting column; and the spiral stirrer (43) is located inside the partition cover (42).
6. A special mixing tank for sodium ion battery positive electrode materials according to claim 5, characterized in that: A paddle (44) is fixed to the side of the spiral stirrer (43), and the bottom of the paddle (44) is movably connected to the bottom of the inner wall of the stirring drum (1).
7. A special mixing tank for sodium ion battery positive electrode materials according to claim 6, characterized in that: The bottom of the inner wall of the mixing drum (1) is a curved surface that bends downward, and the shape of the paddle (44) is compatible with the shape of the mixing drum (1).