CN210646413U - Synthesizer of lithium ion battery cathode material precursor - Google Patents
Synthesizer of lithium ion battery cathode material precursor Download PDFInfo
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- CN210646413U CN210646413U CN201921601536.3U CN201921601536U CN210646413U CN 210646413 U CN210646413 U CN 210646413U CN 201921601536 U CN201921601536 U CN 201921601536U CN 210646413 U CN210646413 U CN 210646413U
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- 239000002243 precursor Substances 0.000 title claims abstract description 42
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 39
- 239000010406 cathode material Substances 0.000 title claims abstract description 13
- 238000003756 stirring Methods 0.000 claims abstract description 68
- 239000003381 stabilizer Substances 0.000 claims abstract description 67
- 239000010405 anode material Substances 0.000 claims abstract description 20
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 17
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 230000002194 synthesizing effect Effects 0.000 claims description 10
- 239000007774 positive electrode material Substances 0.000 claims description 9
- 238000002156 mixing Methods 0.000 abstract description 11
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- 239000006185 dispersion Substances 0.000 description 8
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- 239000000463 material Substances 0.000 description 8
- 238000009792 diffusion process Methods 0.000 description 4
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- 239000004698 Polyethylene Substances 0.000 description 2
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- 229920000573 polyethylene Polymers 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
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Abstract
The utility model provides a synthesizer of lithium ion battery cathode material precursor, relate to chemical industry equipment technical field, the reactor comprises a kettle, drive arrangement and set up in the internal (mixing) shaft of cauldron, agitator and stabilizer, the cauldron body is that the top has open-ended hollow cylinder type structure, the cauldron is internal to be provided with a plurality of first baffles that are the rectangle and radially to be provided with and to be annular second baffle of circle along the axial, and first baffle is located cauldron body middle part, the second baffle is located cauldron body top, drive arrangement is connected with stirring shaft transmission, it is internal that the (mixing) shaft stretches into the cauldron from the opening, and pass second baffle towards cauldron body bottom, the agitator cover is located on the (mixing) shaft, the stabilizer sets up in the agitator bottom, a horizontal impact force for weaken the (mixing) shaft and receive, agitator and stabilizer are in respectively between a plurality of first baffles and are located under the second baffle. The synthesis device of the lithium ion battery anode material precursor can effectively control the homogeneous composition, morphology and particle size of the lithium ion battery anode material precursor.
Description
Technical Field
The utility model relates to a chemical industry equipment technical field particularly, relates to a synthesizer of lithium ion battery cathode material precursor.
Background
The lithium ion battery is a green high-energy battery, has the outstanding advantages of high voltage, large energy density, good cycle performance, small self-discharge, no memory effect and the like, is widely applied to various portable electric tools, electronic instruments, mobile phones, notebook computers, video cameras, weaponry and the like, and is also widely used in the fields of electric automobiles and various energy storage. The positive electrode material is an important component of the lithium ion battery, and the performance of the precursor of the positive electrode material basically determines the quality of the positive electrode material. In the production process of the precursor of the anode material, the synthesis of the precursor is a core process, wherein the internal structure, the liquid inlet mode and the stirring mode of the synthesis equipment have important influence on various performance indexes of the precursor of the anode material.
The synthesis equipment currently used has many disadvantages: the feed liquid in the synthesis equipment can form a vortex or laminar state along with stirring, and meanwhile, the fluid can flow to the kettle cover at the top of the kettle body along the inner wall of the kettle body, the rotating speed of the stirring shaft is too low, the dispersing effect is poor, the rotating speed of the stirring shaft is high, the operation is not stable, and the like.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a synthesizer of lithium ion battery cathode material precursor can effectively control the production of homogeneous phase constitution, appearance and particle diameter of lithium ion battery cathode material precursor.
The embodiment of the utility model is realized like this:
the embodiment of the utility model provides a synthesizer of lithium ion battery cathode material precursor, the reactor comprises a kettle, drive arrangement and set up in the internal (mixing) shaft of cauldron, agitator and stabilizer, the cauldron body is that the top has open-ended hollow cylinder type structure, the cauldron is internal to be provided with a plurality of first baffles that are the rectangle and to be the annular second baffle of circle along the axial and along radially being provided with, and first baffle is located cauldron body middle part, the second baffle is located cauldron body top, drive arrangement is connected with shaft drive, it is internal that the (mixing) shaft stretches into the cauldron from the opening, and pass the second baffle towards cauldron body bottom, the agitator cover is located on the (mixing) shaft, the stabilizer sets up in the agitator bottom, a horizontal impact force for weaken the (mixing) shaft and receive, agitator and stabilizer are in respectively between a plurality of first baffles and are located under the second baffle. The synthesis device of the lithium ion battery anode material precursor can effectively control the homogeneous composition, morphology and particle size of the lithium ion battery anode material precursor.
Optionally, in a preferred embodiment of the present invention, the stirrer includes a paddle stirrer located in the middle of the stirring shaft and a turbine stirrer located on one side of the stirring shaft facing the bottom of the kettle body.
Optionally, in a preferred embodiment of the present invention, the stabilizer includes a first stabilizer disposed under the paddle of the paddle agitator and a second stabilizer disposed under the paddle of the turbine agitator, and the first stabilizer and the second stabilizer are both circular ring type.
Optionally, in a preferred embodiment of the present invention, the paddle stirrer includes a three-blade stirrer, a ratio of a diameter of the three-blade stirrer to a diameter of the kettle body is in a range of 1/6 to 2/3, and a ratio of a width of the blade of the three-blade stirrer to the diameter of the blade is in a range of 1/16 to 1/8.
Optionally, in a preferred embodiment of the present invention, a ratio of the diameter of the first stabilizer to the diameter of the three-folding blade stirrer ranges from 1/2 to 4/5, a ratio of the height of the first stabilizer to the height of the three-folding blade stirrer ranges from 3/5 to 8/5, and a ratio of a product of the diameter and the height of the first stabilizer to a product of the diameter and the height of the three-folding blade stirrer ranges from 1/2 to 6/5.
Optionally, in a preferred embodiment of the present invention, the turbine agitator includes a six-straight-blade disc turbine agitator, a ratio of a diameter of the six-straight-blade disc turbine agitator to a diameter of the kettle body is in a range of 1/5 to 3/4, and a ratio of a width of the blades of the six-straight-blade disc turbine agitator to the diameter of the blades is in a range of 1/16 to 1/4.
Optionally, in a preferred embodiment of the present invention, a ratio of the diameter of the second stabilizer to the diameter of the six straight blade disc turbine agitator ranges from 1/2 to 4/5, a ratio of the height of the second stabilizer to the height of the six straight blade disc turbine agitator ranges from 3/5 to 8/5, and a ratio of a product of the diameter and the height of the second stabilizer to a product of the diameter and the height of the six straight blade disc turbine agitator ranges from 1/2 to 6/5.
Optionally, in a preferred embodiment of the present invention, a ratio of the width of the first baffle to the diameter of the kettle body is in a range of 1/40 to 3/20, and a ratio of the length of the first baffle to the height of the kettle body is in a range of 2/3 to 5/6.
Optionally, in a preferred embodiment of the present invention, a ratio of a radial width of the second baffle to a kettle diameter of the kettle body ranges from 1/16 to 1/8.
Optionally, in a preferred embodiment of the present invention, a distance between the second baffle and the first baffle along the axial direction of the kettle body ranges from 10cm to 30 cm.
The utility model discloses beneficial effect includes:
this synthesizer of lithium ion battery cathode material precursor includes the cauldron body, drive arrangement and sets up (mixing) shaft, agitator and the stabilizer in the cauldron body, and wherein, the cauldron body is open-top's hollow cylinder type structure to can let in the material to the cauldron is internal through the opening, and put into the cauldron internally through opening (mixing) shaft, agitator and stabilizer etc.. Still be provided with a plurality of first baffles that are the rectangle along the axial in the cauldron body and radially be provided with and be annular second baffle of circle, first baffle is located cauldron body middle part and is fixed in on the internal wall of cauldron, and the second baffle is located cauldron body top and is fixed in on the internal wall of cauldron, and wherein, first baffle can break up the swirl or the laminar flow state that the feed liquid formed because of the stirring, breaks the turbulent flow for fluid is unordered homogenization more, and the second baffle can effectively block the fluid and flow to the kettle cover at cauldron body top along cauldron internal wall, breaks the axial flow. The driving device is in transmission connection with the stirring shaft, the stirring shaft penetrates through the second baffle and extends to the bottom of the kettle body, and the stirrer is sleeved on the stirring shaft, so that the driving device can drive the stirring shaft and the stirrer to rotate. Generally, the low rotating speed of the stirring shaft can lead to poor dispersion effect, so that the rotating speed of the stirring shaft needs to be increased to improve the dispersion effect, but the increase of the rotating speed of the stirring shaft can lead to increase of deflection of the stirring shaft, so that the synthesis device of the lithium ion battery anode material precursor can reduce the deflection of the stirring shaft to enable the stirring shaft to run stably, so that feed liquid can be dispersed quickly and well after entering the kettle body, and the synthesis device of the lithium ion battery anode material precursor can effectively control the generation of homogeneous composition, morphology and particle size of the lithium ion battery anode material precursor.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a synthesizing apparatus for a precursor of a positive electrode material of a lithium ion battery provided by an embodiment of the present invention;
FIG. 2 is an assembly diagram of the kettle body, the second baffle and the stirring shaft provided by the embodiment of the present invention;
fig. 3 is an assembly schematic diagram of a stirring shaft, a stirrer and a stabilizer provided by the embodiment of the present invention.
Icon: 100-a synthesis device of a precursor of the lithium ion battery anode material; 10-kettle body; 20-a drive device; 30-a stirring shaft; 40-a stirrer; 41-paddle stirrer; 42-turbine agitator; 50-a stabilizer; 51-a first stabilizer; 52-a second stabilizer; 60-a first baffle; 70-second baffle.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "horizontal", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which the products of the present invention are usually placed in when they are used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which they refer must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the term "horizontal" and the like do not mean that the components are required to be absolutely horizontal, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be internal to both elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 3, the present embodiment provides a synthesis apparatus 100 for a lithium ion battery anode material precursor, which includes a kettle 10, a driving device 20, and a stirring shaft 30, a stirrer 40 and a stabilizer 50 disposed in the kettle 10, wherein the kettle 10 is in a hollow cylindrical structure with an opening at the top, a plurality of rectangular first baffles 60 and a plurality of annular second baffles 70 are axially disposed in the kettle 10, the first baffle 60 is positioned in the middle of the kettle body 10, the second baffle 70 is positioned at the top of the kettle body 10, the driving device 20 is in transmission connection with the stirring shaft 30, the stirring shaft 30 extends into the kettle body 10 from the opening, and passes through the second baffle 70 toward the bottom of the kettle body 10, the stirrer 40 is sleeved on the stirring shaft 30, the stabilizer 50 is arranged at the bottom of the stirrer 40, for attenuating the horizontal impact force to which the stirring shaft 30 is subjected, the stirrer 40 and the stabilizer 50 are respectively located between the plurality of first baffles 60 and below the second baffle 70. The synthesis device 100 for the lithium ion battery anode material precursor can effectively control the homogeneous composition, morphology and particle size of the lithium ion battery anode material precursor.
First, the apparatus 100 for synthesizing a precursor of a positive electrode material for a lithium ion battery includes a reactor 10, a driving device 20, and a stirring shaft 30, a stirrer 40, and a stabilizer 50 disposed in the reactor 10, wherein the reactor 10 has a hollow cylindrical structure with an open top, so that a material can be introduced into the reactor 10 through the opening, and the stirring shaft 30, the stirrer 40, the stabilizer 50, and the like can be placed into the reactor 10 through the opening. Still be provided with a plurality of first baffles 60 that are the rectangle along the axial in the cauldron body 10 and radially be provided with and be annular second baffle 70, first baffle 60 is located cauldron body 10 middle part and is fixed in on the internal wall of cauldron 10, second baffle 70 is located cauldron body 10 top and is fixed in on the internal wall of cauldron 10, wherein, first baffle 60 can break up the swirl or the laminar flow state that the feed liquid formed because of the stirring, break the turbulent flow for the fluid is more unordered homogenization, second baffle 70 can effectively block the fluid and flow to the kettle cover at cauldron body 10 top along cauldron body 10 inner wall, break axial flow.
Secondly, the driving device 20 is in transmission connection with the stirring shaft 30, the stirring shaft 30 passes through the second baffle 70 and extends to the bottom of the kettle body 10, and the stirrer 40 is sleeved on the stirring shaft 30, so that the driving device 20 can drive the stirring shaft 30 and the stirrer 40 to rotate. Generally, the rotational speed of the stirring shaft 30 is too low, which results in poor dispersion effect, so that the rotational speed of the stirring shaft 30 needs to be increased to improve the dispersion effect, but generally, during the rotation of the stirring shaft 30, the fluid generates horizontal impact force on the stirring shaft 30, and therefore, the deflection of the stirring shaft 30 increases when the rotational speed of the stirring shaft 30 increases, so the synthesis apparatus 100 for the lithium ion battery anode material precursor also reduces the deflection of the stirring shaft 30 through the stabilizer 50 additionally arranged at the bottom of the stirrer 40, so that the stirring shaft 30 runs smoothly.
Thirdly, specifically, since the stabilizer 50 is disposed at the bottom of the stirrer 40, the stabilizer 50 can rotate together with the stirring shaft 30, when the stabilizer 50 rotates together with the stirring shaft 30, the stabilizer 50 can generate centrifugal forces at the inner ring and the outer ring of the circular ring-shaped stabilizer 50 respectively due to its own circular motion, at this time, when a horizontal impact force impacts the stabilizer 50, the horizontal impact force interacts with the centrifugal forces of the inner ring and the outer ring of the stabilizer 50 to weaken the horizontal impact force, so that the resultant force of the horizontal direction acting force acting on the stirring shaft 30 is reduced, and further, the stirring shaft 30 can operate stably.
As described above, the synthesis apparatus 100 for the lithium ion battery anode material precursor can break up the vortex or laminar state of the feed liquid formed by stirring through the first baffle 60, break down the turbulent flow, make the fluid more disordered and uniform, can effectively block the fluid from flowing to the kettle cover at the top of the kettle 10 along the inner wall of the kettle 10 through the second baffle 70, break down the axial flow, and can also improve the rotation speed of the stirring shaft 30 and reduce the deflection of the stirring shaft 30 through the mutual cooperation of the driving device 20, the stirring shaft 30, the stirrer 40 and the stabilizer 50, so that the stirring shaft 30 can stably run, the feed liquid can be dispersed fast and well after entering the kettle 10, and further the synthesis apparatus 100 for the lithium ion battery anode material precursor can effectively control the appearance and particle size of the lithium ion battery anode material precursor.
Referring to fig. 1 to 3, in order to improve the dispersion efficiency of the liquid, in the present embodiment, two sets of stirrers 40 are sleeved on the stirring shaft 30, including a paddle stirrer 41 located in the middle of the stirring shaft 30 and a turbine stirrer 42 located on a side of the stirring shaft 30 facing the bottom of the kettle 10, so that the fluid circulates in the kettle 10 through the paddle stirrer 41. Generally, the material deposition phenomenon inevitably occurs at the bottom of the kettle body 10 during the dispersion of the feed liquid, and therefore, the fluid circulation at the bottom of the kettle body 10 is further enhanced by the turbine-type stirrer 42, and the shearing force generated by the turbine-type stirrer 42 is large, so that the fluid dispersion effect is better, and the material deposition at the bottom of the kettle body 10 can be effectively avoided. The two groups of stirrers 40 can realize diffusion circulation of materials in the axial direction and the radial direction to form a relatively uniform and stable reaction area, and the adoption of the two groups of stirrers 40 is beneficial to suspension of precursors generated by high viscosity and high density, and has good heat transfer, dispersion and other effects. Of course, in other embodiments, the number of agitators 40 may be provided in three, four, etc. groups.
Referring to fig. 1 to 3, in accordance with the number of the stirrers 40, in the present embodiment, the number of the stabilizers 50 is also two, and the stabilizers include a first stabilizer 51 disposed below the blades of the paddle stirrer 41 and a second stabilizer 52 disposed below the blades of the turbine stirrer 42, and the first stabilizer 51 and the second stabilizer 52 are both circular.
Optionally, the paddle stirrer 41 comprises a three-blade stirrer to reduce power consumption and production cost, the ratio of the diameter of the three-blade stirrer to the diameter of the kettle 10 is 1/6-2/3, and the ratio of the width of the blades of the three-blade stirrer to the diameter of the blades is 1/16-1/8.
Optionally, the ratio of the diameter of the first stabilizer 51 to the diameter of the three-fold blade agitator ranges from 1/2 to 4/5, the ratio of the height of the first stabilizer 51 to the height of the three-fold blade agitator ranges from 3/5 to 8/5, and the ratio of the product of the diameter and the height of the first stabilizer 51 to the product of the diameter and the height of the three-fold blade agitator ranges from 1/2 to 6/5.
Optionally, the turbine agitator 42 includes a six-straight-blade disc turbine agitator, and since the six-straight-blade disc turbine agitator belongs to a mixed flow agitator, strong axial flow diffusion can be mainly generated above the six-straight-blade disc turbine agitator during agitation, and a radial flow diffusion circulation is formed below the six-straight-blade disc turbine agitator, so that fluid can be rapidly subjected to axial diffusion circulation, and thus material deposition at the bottom of the kettle body 10 can be effectively avoided, the ratio of the blade diameter of the six-straight-blade disc turbine agitator to the kettle diameter of the kettle body 10 ranges from 1/5 to 3/4, and the ratio of the blade width to the blade diameter of the six-straight-blade disc turbine agitator ranges from 1/16 to 1/4.
Optionally, the ratio of the diameter of the second stabilizer 52 to the diameter of the six straight blade disc turbine agitator ranges from 1/2 to 4/5, the ratio of the height of the second stabilizer 52 to the height of the six straight blade disc turbine agitator ranges from 3/5 to 8/5, and the ratio of the product of the diameter and the height of the second stabilizer 52 to the product of the diameter and the height of the six straight blade disc turbine agitator ranges from 1/2 to 6/5.
First, the specific values of the lengths of the blade diameters and the widths of the blades of the two sets of stirrers 40 are selected according to the quantity and viscosity of the stirring slurry. Specifically, when the slurry has small viscosity, small liquid-solid ratio, low density of precipitates in the slurry and small quantity of the slurry, a better stirring effect can be achieved by selecting a smaller paddle diameter and a narrower paddle, and the energy consumption can be reduced; when the slurry is high in viscosity, high in liquid-solid ratio, high in density of precipitates in the slurry and large in quantity of the slurry, the blades with larger blade diameters and wider blade diameters can be adopted, so that the slurry can be stirred when the rotating speed of the stirring shaft 30 is lower, the slurry is prevented from settling, but if the blade diameters are too long and the blades are too wide, the resistance received during stirring is increased, the energy consumption is increased, stronger turbulence is easily formed, and the stirring effect is not ideal. Therefore, in the present embodiment, only some preferable value ranges are provided, and no specific limitation is made, and the specific values of the lengths of the blade diameters and the widths of the blades of the two sets of stirrers 40 need to be further selected according to practical situations.
Secondly, since the horizontal impact force of the fluid on different positions of the stirring shaft 30 is related to the stirring paddles of the two sets of stirrers 40, and the two stabilizers 50 are respectively installed at the bottoms of the blades of the two sets of stirrers 40, the specific values of the diameters, the heights, and the product of the diameters and the heights of the two stabilizers 50 are all related to the stirring paddles of the stirrers 40. Therefore, in the present embodiment, only some preferable value ranges are provided, and not limited specifically, and the specific values of the diameters, the heights, and the product of the diameters and the heights of the two stabilizers 50 should be further selected according to practical situations.
Optionally, the number of the first baffle 60 may be 2 to 4, and the number of the first baffle 60 is related to the volume of the kettle body 10, specifically, 2 kettle bodies 10 with smaller volume may meet the use requirement, while 3 to 4 kettle bodies 10 with larger volume may need to use more than 3 to 4 to better disturb the turbulent flow. The ratio of the width of the first baffle 60 to the kettle diameter of the kettle body 10 is 1/40-3/20, the ratio of the length of the first baffle 60 to the height of the kettle body 10 is 2/3-5/6, and preferably, the ratio of the length of the first baffle 60 to the height of the kettle body 10 is 3/4.
Optionally, the ratio of the kettle diameter to the height of the kettle body 10 ranges from 1/2 to 2/1, and the numerical range of the volume is 0.01m3～15m3Illustratively, the ratio of the diameter to the height of the kettle body 10 is 1/2, 1/1, 2/1, etc., and the volume of the kettle body 10 is 2m3、5m3、7m3、10m3、 13m3And the like.
Optionally, in order to enable the stirring shaft 30, the stirrer 40, the stabilizer 50 and the like to be smoothly placed into the kettle body 10, the ratio of the radial width of the second baffle 70 to the kettle diameter of the kettle body 10 ranges from 1/16 to 1/8, and since the fluid flows to the opening at the top of the kettle body 10 along the inner wall of the kettle body 10, the radial width of the second baffle 70 does not need to be too large, and the fluid can be effectively prevented from flowing to the kettle cover at the top of the kettle body 10 along the inner wall of the kettle body 10, so that the axial flow is broken.
Alternatively, the distance between the second baffle 70 and the first baffle 60 along the axial direction of the kettle body 10 may range from 10cm to 30cm, and illustratively, the distance between the second baffle 70 and the first baffle 60 along the axial direction of the kettle body 10 may range from 15cm, 20cm, 25cm, and so on.
In this embodiment, the apparatus 100 for synthesizing a precursor of a positive electrode material of a lithium ion battery further includes a kettle cover disposed at an opening at the top of the kettle 10, so as to prevent heat generated during mixing of the material and the liquid in the kettle 10 from being dissipated outwards, resulting in a decrease in temperature of the slurry. A Polyethylene (PE) plastic layer is further disposed on the inner wall of the kettle 10, and a thermal insulation sleeve is further disposed on the outer wall of the kettle 10. The synthesis device 100 for the lithium ion battery anode material precursor further comprises a feed inlet, a heating pipe, a temperature sensor, a pH meter electrode, an air inlet, an air outlet and the like which are arranged on the kettle cover, and a discharge port is further arranged at the bottom of the kettle body 10 so as to meet the requirements of temperature measurement, pH measurement, feeding, discharging and the like in the preparation process of the lithium ion battery anode material precursor.
In order to make the heat conduction faster and thus to make the temperature of the slurry in the kettle body 10 stable and consistent, optionally, the number of the heating pipes may be 2-4, and the distance between one end of each heating pipe facing the bottom of the kettle body 10 and the six-straight-blade disc turbine stirrer ranges from 10cm to 20 cm.
In order to ensure that the feeding is more uniform in the material preparation process and the slurry in the reaction system is more rapidly and uniformly dispersed, optionally, the number of the feeding pipes can be 2-6, and the distance between one end of each feeding pipe facing the bottom of the kettle body 10 and the six-straight-blade disc turbine stirrer ranges from 5cm to 40 cm.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A synthesis device of a precursor of a lithium ion battery anode material is characterized by comprising a kettle body, a driving device, a stirring shaft, a stirrer and a stabilizer which are arranged in the kettle body, the kettle body is of a hollow cylindrical structure with an opening at the top, a plurality of rectangular first baffles and a plurality of annular second baffles are arranged in the kettle body along the axial direction, the first baffle is positioned in the middle of the kettle body, the second baffle is positioned at the top of the kettle body, the driving device is in transmission connection with the stirring shaft, the stirring shaft extends into the kettle body from the opening, and passes through the second baffle plate and faces the bottom of the kettle body, the stirrer is sleeved on the stirring shaft, the stabilizer is arranged at the bottom of the stirrer, the stirrer and the stabilizer are respectively positioned between the first baffles and below the second baffles.
2. The device for synthesizing the precursor of the lithium ion battery cathode material according to claim 1, wherein the stirrer comprises a paddle stirrer positioned in the middle of the stirring shaft and a turbine stirrer positioned on one side of the stirring shaft facing the bottom of the kettle body.
3. The apparatus according to claim 2, wherein the stabilizer comprises a first stabilizer disposed under the paddle of the paddle agitator and a second stabilizer disposed under the paddle agitator, and the first stabilizer and the second stabilizer are both ring-shaped.
4. The device for synthesizing the precursor of the lithium ion battery positive electrode material according to claim 3, wherein the paddle stirrer comprises a three-folded-blade stirrer, the ratio of the diameter of the three-folded-blade stirrer to the diameter of the kettle body is 1/6-2/3, and the ratio of the width of the three-folded-blade stirrer to the diameter of the three-folded-blade stirrer is 1/16-1/8.
5. The device for synthesizing the precursor of the lithium ion battery positive electrode material according to claim 4, wherein the ratio of the diameter of the first stabilizer to the diameter of the three-folding blade stirrer ranges from 1/2 to 4/5, the ratio of the height of the first stabilizer to the height of the three-folding blade stirrer ranges from 3/5 to 8/5, and the ratio of the product of the diameter and the height of the first stabilizer to the product of the diameter and the height of the three-folding blade stirrer ranges from 1/2 to 6/5.
6. The device for synthesizing the precursor of the lithium ion battery cathode material according to claim 3, wherein the turbine stirrer comprises a six-straight-blade disc turbine stirrer, the ratio of the blade diameter of the six-straight-blade disc turbine stirrer to the kettle diameter of the kettle body is 1/5-3/4, and the ratio of the blade width of the six-straight-blade disc turbine stirrer to the blade diameter is 1/16-1/4.
7. The synthesis device of the lithium ion battery positive electrode material precursor, according to claim 6, characterized in that the ratio of the diameter of the second stabilizer to the diameter of the six straight-blade disc turbine stirrer ranges from 1/2 to 4/5, the ratio of the height of the second stabilizer to the height of the six straight-blade disc turbine stirrer ranges from 3/5 to 8/5, and the ratio of the product of the diameter and the height of the second stabilizer to the product of the diameter and the height of the six straight-blade disc turbine stirrer ranges from 1/2 to 6/5.
8. The device for synthesizing the precursor of the lithium ion battery cathode material according to claim 1, wherein the ratio of the width of the first baffle plate to the diameter of the autoclave body is in a range of 1/40 to 3/20, and the ratio of the length of the first baffle plate to the height of the autoclave body is in a range of 2/3 to 5/6.
9. The device for synthesizing the precursor of the cathode material of the lithium ion battery according to claim 1, wherein the ratio of the radial width of the second baffle plate to the kettle diameter of the kettle body is in a range of 1/16 to 1/8.
10. The device for synthesizing the precursor of the lithium ion battery cathode material according to claim 1, wherein the distance between the second baffle and the first baffle along the axial direction of the autoclave body ranges from 10cm to 30 cm.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114534542A (en) * | 2022-02-28 | 2022-05-27 | 华东理工大学 | Stirring paddle, stirring system, anode material, precursor of anode material and preparation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114534542A (en) * | 2022-02-28 | 2022-05-27 | 华东理工大学 | Stirring paddle, stirring system, anode material, precursor of anode material and preparation method |
| CN114534542B (en) * | 2022-02-28 | 2024-01-26 | 华东理工大学 | Stirring paddle, stirring system, positive electrode material, precursor of positive electrode material and preparation method of precursor |
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Assignee: Guangzhou shunyao Energy Technology Co.,Ltd. Assignor: Institute of resource utilization and rare earth development, Guangdong Academy of Sciences Contract record no.: X2024980006118 Denomination of utility model: A synthesis device for precursor of lithium-ion battery cathode material Granted publication date: 20200602 License type: Common License Record date: 20240523 Assignee: Guangzhou Zhuoyue Power Technology Co.,Ltd. Assignor: Institute of resource utilization and rare earth development, Guangdong Academy of Sciences Contract record no.: X2024980006061 Denomination of utility model: A synthesis device for precursor of lithium-ion battery cathode material Granted publication date: 20200602 License type: Common License Record date: 20240522 Assignee: GUANGZHOU ZHUOYUE POWER NEW ENERGY Co.,Ltd. Assignor: Institute of resource utilization and rare earth development, Guangdong Academy of Sciences Contract record no.: X2024980006026 Denomination of utility model: A synthesis device for precursor of lithium-ion battery cathode material Granted publication date: 20200602 License type: Common License Record date: 20240522 |