CN217490478U - Lithium battery anode material precursor production device - Google Patents
Lithium battery anode material precursor production device Download PDFInfo
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- CN217490478U CN217490478U CN202220443746.XU CN202220443746U CN217490478U CN 217490478 U CN217490478 U CN 217490478U CN 202220443746 U CN202220443746 U CN 202220443746U CN 217490478 U CN217490478 U CN 217490478U
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Abstract
The application provides a lithium cell cathode material precursor apparatus for producing, including the device body that has feed inlet, discharge gate and working chamber, be used for stirring and the stirring subassembly of transmission material, drive arrangement, heating device and cooling device, during the working chamber was located to the stirring subassembly, drive arrangement and stirring subassembly drive were connected, and heating device and cooling device install respectively in the device body. During operation, the material is added into the working cavity through the feeding hole, and the stirring assembly is driven to work through the driving device, so that the material passes through the working cavity. The materials are fully reacted by means of the temperature generated by the heating device to generate a precursor of the lithium battery anode material, and the liquid phase material can be dried while the heating reaction is carried out. And the cooling device cools the generated lithium battery anode material precursor. Under the stirring effect of stirring subassembly, can also prevent that the problem of caking clot from appearing in the material, break up the material continuously.
Description
Technical Field
The application belongs to the technical field of positive electrode material production devices, and particularly relates to a lithium battery positive electrode material precursor production device.
Background
The lithium iron manganese phosphate precursor is a commonly used lithium battery anode material, and in the existing production method of the lithium iron manganese phosphate precursor, a prepared lithium source, a prepared ferric iron source, a prepared manganese dioxide, a prepared phosphorus source and a prepared carbon source are usually placed in a ball milling tank, a dispersing agent and a prepared complexing agent are added, then ball milling is carried out on a ball mill, the ball milling is carried out on the ball mill, the ball milling is then placed in a dryer for drying, and the drying and the grinding process are carried out, so that the lithium iron manganese phosphate precursor can be obtained. The existing production process has complex flow and can not complete the processes of mixing, heating, drying, cooling, scattering and the like of the raw materials of the materials in the same equipment.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the application is to provide a lithium battery positive electrode material precursor production device, so as to solve the technical problem that in a lithium battery positive electrode material precursor production method in the prior art, a device capable of achieving processes of mixing, heating, drying, cooling, scattering and the like of raw materials in the same equipment is lacked.
In order to achieve the purpose, the technical scheme adopted by the application is as follows:
the utility model provides a lithium cell cathode material precursor apparatus for producing, including the device body that has feed inlet, discharge gate and working chamber, be used for stirring and the stirring subassembly of transmission material, drive arrangement, heating device and cooling device, the stirring subassembly is located in the working chamber, drive arrangement with the stirring subassembly drive is connected, heating device and cooling device install respectively in the device body.
As a further improvement of the above technical solution:
optionally, the stirring subassembly is followed lithium cell cathode material precursor apparatus for producing's material direction of delivery is equipped with first stirring section, second stirring section and third stirring section in proper order, the working chamber is including corresponding the mixing stirring chamber, the heating chamber and the cooling chamber of first stirring section, second stirring section and third stirring section.
Optionally, the stirring assembly comprises a stirring shaft, the first stirring section, the second stirring section and the third stirring section are arranged on the stirring shaft, the first stirring section and the third stirring section are thread sections, and the second stirring section comprises a plurality of stirring teeth arranged at intervals along the circumferential direction of the stirring shaft.
Optionally, the second stirring section is provided with a plurality of groups of stirring teeth along the axial direction, and each group of stirring teeth comprises a plurality of stirring teeth arranged along the circumferential direction of the stirring shaft at intervals.
Optionally, the stirring teeth are arc-shaped teeth, and the arc-shaped teeth extend along the circumferential direction of the stirring shaft in a bending manner.
Optionally, the second stirring section extends into the mixing stirring cavity along one axial end of the stirring shaft, and/or the second stirring section extends into the cooling cavity along the other axial end of the stirring shaft.
Optionally, the number of the stirring shafts is more than one.
Optionally, the heating device is a resistance heating device.
Optionally, the cooling device is a cooling pipe through which a cooling medium flows.
Optionally, the device body is further provided with an air inlet and an air outlet which are communicated with the working cavity.
The application provides a lithium cell cathode material precursor apparatus for producing's beneficial effect lies in:
the application provides a lithium cell cathode material precursor apparatus for producing, including the device body that has feed inlet, discharge gate and working chamber, be used for stirring and the stirring subassembly of transmission material, drive arrangement, heating device and cooling device, during the working chamber was located to the stirring subassembly, drive arrangement and stirring subassembly drive were connected, and heating device and cooling device install respectively in the device body.
During operation, the material is added into the working cavity through the feeding hole, and the stirring assembly is driven to work through the driving device, so that the material passes through the working cavity. The materials are fully reacted by means of the temperature generated by the heating device to generate a precursor of the lithium battery anode material, and the liquid phase material can be dried while the heating reaction is carried out. And the cooling device cools the generated lithium battery anode material precursor. Under the stirring effect of stirring subassembly, can also prevent that the problem of caking clot from appearing in the material, break up the material continuously. The lithium battery anode material precursor production device can meet the process requirements of mixing, stirring, heating, cooling, scattering and the like of materials, and the preparation of the lithium battery anode material precursor is completed in the device.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic perspective view of a lithium battery positive electrode material precursor production device provided by the present application;
fig. 2 is a schematic diagram of a partially enlarged structure of a lithium battery positive electrode material precursor production device provided by the present application;
fig. 3 is a schematic diagram of a partially enlarged structure of a lithium battery positive electrode material precursor production device provided by the present application;
fig. 4 is a schematic front view of a stirring assembly of the lithium battery positive electrode material precursor production device provided by the present application;
fig. 5 is a schematic perspective view of a second apparatus for producing a precursor of a positive electrode material of a lithium battery provided in the present application.
Wherein, in the figures, the respective reference numerals:
1. a device body; 11. A feed inlet;
12. a discharge port; 13. A working chamber;
131. a mixing and stirring chamber; 132. A heating cavity;
133. a cooling chamber; 2. A stirring assembly;
21. a first stirring section; 22. A second stirring section;
23. a third stirring section; 24. stirring shaft
25. Stirring teeth; 3. A drive device;
4. a heating device; 5. A cooling device;
6. an air inlet; 7. An air outlet;
8. a vacuum pump; 9. An absorption tower.
Detailed Description
The lithium iron manganese phosphate precursor is a commonly used lithium battery anode material, and in the existing production method of the lithium iron manganese phosphate precursor, a prepared lithium source, a prepared ferric iron source, a prepared manganese dioxide, a prepared phosphorus source and a prepared carbon source are usually placed in a ball milling tank, a dispersing agent and a prepared complexing agent are added, then ball milling is carried out on a ball mill, the ball milling is carried out on the ball mill, the ball milling is then placed in a dryer for drying, and the drying and the grinding process are carried out, so that the lithium iron manganese phosphate precursor can be obtained. The existing production process is complex in flow and cannot complete the processes of mixing, heating and drying, cooling, scattering and the like of raw materials of the materials in the same equipment.
As shown in fig. 1 to fig. 3, the present embodiment provides a lithium battery positive electrode material precursor production apparatus, which includes an apparatus body 1 having a feeding port 11, a discharging port 12 and a working chamber 13, a stirring assembly 2 for stirring and transporting materials, a driving device 3, a heating device 4 and a cooling device 5, wherein the stirring assembly 2 is disposed in the working chamber 13, the driving device 3 is in driving connection with the stirring assembly 2, and the heating device 4 and the cooling device 5 are respectively mounted on the apparatus body 1.
During operation, the material is added into the working chamber 13 through the feed inlet 11, and the stirring assembly 2 is driven to work through the driving device 3, so that the material passes through the working chamber 13. The materials are fully reacted by means of the temperature generated by the heating device 4 to generate a precursor of the lithium battery anode material, and the liquid phase materials can be dried while the heating reaction is carried out. The cooling device 5 cools the generated lithium battery positive electrode material precursor. Under stirring assembly 2's stirring effect, can also prevent that the problem of caking clot from appearing in the material, break up the material continuously. The lithium battery anode material precursor production device can meet the process requirements of mixing, stirring, heating, cooling, scattering and the like of materials, and the preparation of the lithium battery anode material precursor is completed in the device.
The driving device 3 may be an electric motor, a hydraulic motor, or the like.
As shown in fig. 1 to 3, in one embodiment, the stirring assembly 2 is provided with a first stirring section 21, a second stirring section 22 and a third stirring section 23 in sequence along a material conveying direction of the lithium battery positive electrode material precursor production apparatus, and the working chamber 13 includes a mixing stirring chamber 131, a heating chamber 132 and a cooling chamber 133 corresponding to the first stirring section 21, the second stirring section 22 and the third stirring section 23.
It should be noted that the correspondence relationship between the "first stirring segment 21, the second stirring segment 22 and the third stirring segment 23" and the "mixing and stirring chamber 131, the heating chamber 132 and the cooling chamber 133" is limited to the correspondence relationship in spatial arrangement, and is not limited to the specific case that the first stirring segment 21 is only disposed in the mixing and stirring chamber 131, the second stirring segment 22 is only disposed in the heating chamber 132, and the third stirring segment 23 is only disposed in the cooling chamber 133.
In the mixing and stirring cavity 131, the materials are uniformly stirred by the stirring component 2; in the heating cavity 132, the materials are fully reacted by means of the temperature generated by the heating device 4 to generate a precursor of the lithium battery anode material, and the liquid-phase material can be dried while the reaction is heated; in the cooling chamber 133, the cooling device 5 cools the generated lithium battery positive electrode material precursor.
It can be understood that the material conveying direction of the lithium battery anode material precursor production device specifically refers to: the direction of the materials passing through the feed inlet 11, the working chamber 13 and the discharge outlet 12 in sequence, that is, the direction of the materials passing through the feed inlet 11, the mixing and stirring chamber 131, the heating chamber 132, the cooling chamber 133 and the discharge outlet 12 in sequence.
Specifically, the heating device 4 may be installed inside the heating cavity 132, or installed on the cavity wall of the heating cavity 132, or installed outside the heating cavity 132. Similarly, the cooling device 5 may be installed inside the cooling cavity 133, or installed on the wall of the cooling cavity 133, or installed outside the cooling cavity 133.
As shown in fig. 1, in one embodiment, the heating device 4 is mounted on an outside cavity wall of the heating cavity 132. The outside cavity wall of the heating cavity 132 can be filled with a thermal insulation material to realize the thermal insulation effect on the heating cavity 132.
As shown in fig. 2 and 4, in one embodiment, the stirring assembly 2 includes a stirring shaft 24, the first stirring segment 21, the second stirring segment 22 and the third stirring segment 23 are disposed on the stirring shaft 24, the first stirring segment 21 and the third stirring segment 23 are screw segments, and the second stirring segment 22 includes a plurality of stirring teeth 25 disposed at intervals along a circumferential direction of the stirring shaft 24.
When the driving device 3 drives the stirring shaft 24 to rotate, the stirring and mixing of the materials are realized through the axial surface friction, the thread surface friction and the like of the first stirring section 21 and the third stirring section 23, and the materials are conveyed along the conveying direction through the thread structure. The stirring teeth 25 of the second stirring section 22 have a larger contact area than the thread structures of the first stirring section 21 and the third stirring section 23, so that the uniform mixing of the materials is facilitated; and also helps to increase the heated area of the material in the heating chamber 132 and to facilitate the drying and curing of the material. The rabble teeth 25 can also collide with the material to prevent the material from agglomerating and coagulating. The spacing between the stirring teeth 25 can slow down the material conveying speed, so that the material is sufficiently stirred in the second stirring section 22, and the material is sufficiently dried and solidified in the heating cavity 132.
As shown in fig. 2 and 4, in one embodiment, the second stirring segment 22 is provided with a plurality of stirring tooth sets along the axial direction, and each stirring tooth set comprises a plurality of stirring teeth 25 spaced along the circumferential direction of the stirring shaft 24. Along the multiunit stirring tooth group of axial setting can carry out intensive mixing and collision with the material along direction of delivery, further guarantees the misce bene of material.
As shown in fig. 2 and 4, in one embodiment, the rabble teeth 25 are arcuate teeth that extend curvedly in the circumferential direction of the rabble shaft 24 to better match the circumferential configuration of the rabble shaft 24. The arc tooth is more smooth with the atress when material contact, and stress concentration is little, avoids stress too concentrated, leads to stirring tooth 25 to collapse.
As shown in fig. 3, in one embodiment, the second stirring section 22 extends into the mixing stirring chamber 131 along one axial end of the stirring shaft 24, and/or the second stirring section 22 extends into the cooling chamber 133 along the other axial end of the stirring shaft 24.
In order to meet the requirements of different preparation processes, the second stirring section 22 can extend into the mixing and stirring cavity 131 along one axial end of the stirring shaft 24, or the second stirring section 22 extends into the cooling cavity 133 along the other axial end of the stirring shaft 24, or both the second stirring section 22 and the mixing and stirring cavity 131 and the cooling cavity 133.
As shown in fig. 4, in one embodiment, the number of stirring shafts 24 is two. The two stirring shafts 24 are respectively provided with a first stirring section 21, a second stirring section 22 and a third stirring section 23, the two stirring shafts 24 are in meshed transmission, and the materials are fully mixed through the stirring of the two stirring shafts 24. When the two stirring shafts 24 are in meshing transmission, the meshing position generates shearing force on the materials, which is beneficial to crushing the materials, thereby being beneficial to refining the granularity of the materials. In other embodiments, the number of stirring shafts 24 may also be one, three, four, etc.
In one embodiment, the heating device 4 is a resistive heating device.
Compared with the traditional steam heating mode, the resistance heating device has the advantages of large power, small occupied volume, quick reaction, small heat loss, easy adjustment of heating temperature and the like. Specifically, the resistance heating device is a nickel alloy resistance wire heater, a ceramic heater, a resistance coil heater, a quartz tube heater, and the like. In other embodiments, the heating device 4 may also be an electromagnetic heater device, an infrared heating device, or the like.
In one embodiment, the cooling device 5 is a cooling pipe through which a cooling medium flows. Through the heat exchange effect of the cooling pipe, the heat in the cooling cavity 133 is discharged, so that the material cooling effect is achieved.
As shown in fig. 1, in one embodiment, the device body 1 is further provided with an air inlet 6 and an air outlet 7 which are communicated with the working chamber 13.
As shown in fig. 5, wherein, the reaction gas or the protective gas can be introduced into the working chamber 13 through the gas inlet 6; the air outlet 7 can be connected with a vacuum pump 8, and the vacuum pump 8 can pump out the gas in the working cavity 13 through the air outlet 7 to generate a vacuum condition for the working cavity 13; or is connected with the tail gas absorption tower 9 and is used for absorbing the tail gas generated by the reaction of the materials in the working cavity 13.
Through the application, the lithium iron manganese phosphate precursor production device for the lithium battery anode material can be used for preparing a lithium iron manganese phosphate precursor.
Before the raw materials are added, protective gas such as hydrogen, nitrogen, argon and the like can be introduced into the working cavity 13 through the air inlet 6 to remove residual air in the working cavity 13, and the protective gas is continuously introduced when the device works to avoid oxidation of the raw materials and products.
A lithium source, an iron source, manganese dioxide, a phosphorus source, and a carbon source in liquid phase are fed into the working chamber 13 from the feed port 11. And then the driving device 3 is started to drive the stirring assembly 2 to stir the materials. The stirring assembly 2 comprises two stirring shafts 24, and the two stirring shafts 24 are in meshing transmission and are respectively provided with a first stirring section 21, a second stirring section 22 and a third stirring section 23. The materials are sequentially conveyed through the mixing and stirring cavity 131, the heating cavity 132 and the cooling cavity 133 in the working cavity 13 by the stirring conveying action of the first stirring section 21, the second stirring section 22 and the third stirring section 23.
Wherein, the first stirring section 21 is a screw thread section, and the liquid phase raw material is uniformly mixed in the mixing and stirring cavity 131 through the friction between the raw material and the stirring shaft 24, the friction between the first stirring sections 21 of the two stirring shafts 24 and the friction between the stirring shaft 24 and the wall of the mixing and stirring cavity 131, and is conveyed to the heating cavity 132.
The liquid phase raw material starts to react after reaching the heating cavity 132, and the lithium iron manganese phosphate is gradually generated. And the liquid phase raw materials are all converted into the lithium iron manganese phosphate under the stirring, conveying and scattering actions of the second stirring section 22. The lithium iron manganese phosphate is dried and solidified by heating temperature in the reaction process. The tail gas generated by the reaction is pumped into an absorption tower 9 through a vacuum pump 8 to absorb toxic and harmful gases such as nitrogen dioxide, nitric oxide and the like, and the purified tail gas reaching the standard is discharged into the atmosphere.
The dried lithium manganese iron phosphate is sent to the cooling cavity 133 for cooling, and is output through the discharge port 12 after being cooled. The third stirring section 23 is a threaded section, and when the lithium manganese iron phosphate is in the cooling cavity 133, the friction between the lithium manganese iron phosphate and the stirring shaft 24, the friction between the third stirring sections 23 of the two stirring shafts 24, and the friction between the stirring shaft 24 and the wall of the cooling cavity 133 contribute to further crushing the lithium manganese iron phosphate into smaller particles.
The lithium battery anode material precursor production device can also be used for preparing other anode materials such as lithium iron phosphate and iron phosphate.
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating 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 the present application, "a plurality" means two or more unless specifically limited otherwise.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. The utility model provides a lithium cell cathode material precursor apparatus for producing, its characterized in that, including device body (1) that has feed inlet (11), discharge gate (12) and working chamber (13), stirring subassembly (2), drive arrangement (3), heating device (4) and cooling device (5) that are used for stirring and transmit the material, stirring subassembly (2) are located in working chamber (13), drive arrangement (3) with stirring subassembly (2) drive is connected, heating device (4) and cooling device (5) install respectively in device body (1).
2. The lithium battery positive electrode material precursor production device according to claim 1, wherein the stirring assembly (2) is provided with a first stirring section (21), a second stirring section (22) and a third stirring section (23) in sequence along a material conveying direction of the lithium battery positive electrode material precursor production device, and the working chamber (13) comprises a mixing stirring chamber (131), a heating chamber (132) and a cooling chamber (133) corresponding to the first stirring section (21), the second stirring section (22) and the third stirring section (23).
3. The lithium battery positive electrode material precursor production apparatus according to claim 2, wherein the stirring assembly (2) includes a stirring shaft (24), the first stirring section (21), the second stirring section (22), and the third stirring section (23) are provided on the stirring shaft (24), the first stirring section (21) and the third stirring section (23) are screw segments, and the second stirring section (22) includes a plurality of stirring teeth (25) provided at intervals in a circumferential direction of the stirring shaft (24).
4. The lithium battery positive electrode material precursor production apparatus according to claim 3, wherein the second stirring section (22) is provided with a plurality of sets of stirring teeth in an axial direction, each set of stirring teeth including a plurality of stirring teeth (25) arranged at intervals in a circumferential direction of the stirring shaft (24).
5. The lithium battery positive electrode material precursor production device according to claim 3, wherein the stirring teeth (25) are arc-shaped teeth that extend in a curved manner in a circumferential direction of the stirring shaft (24).
6. The lithium battery positive electrode material precursor production apparatus according to claim 3, wherein the second stirring section (22) protrudes into the mixing stirring chamber (131) along one axial end of the stirring shaft (24), and/or the second stirring section (22) protrudes into the cooling chamber (133) along the other axial end of the stirring shaft (24).
7. The lithium battery positive electrode material precursor production apparatus as claimed in any one of claims 3 to 6, wherein the number of the stirring shafts (24) is one or more.
8. The lithium battery positive electrode material precursor production apparatus according to claim 1, wherein the heating device (4) is a resistance heating device.
9. The lithium battery positive electrode material precursor production apparatus as defined in claim 1, wherein the cooling device (5) is a cooling pipe through which a cooling medium flows.
10. The lithium battery positive electrode material precursor production apparatus according to any one of claims 1 to 6, wherein the apparatus body (1) is further provided with a gas inlet (6) and a gas outlet (7) which are communicated with the working chamber (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220443746.XU CN217490478U (en) | 2022-03-01 | 2022-03-01 | Lithium battery anode material precursor production device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220443746.XU CN217490478U (en) | 2022-03-01 | 2022-03-01 | Lithium battery anode material precursor production device |
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| Publication Number | Publication Date |
|---|---|
| CN217490478U true CN217490478U (en) | 2022-09-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220443746.XU Active CN217490478U (en) | 2022-03-01 | 2022-03-01 | Lithium battery anode material precursor production device |
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| CN (1) | CN217490478U (en) |
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- 2022-03-01 CN CN202220443746.XU patent/CN217490478U/en active Active
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