CN212142570U - Lithium cell cathode material washing cladding cauldron - Google Patents
Lithium cell cathode material washing cladding cauldron Download PDFInfo
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- CN212142570U CN212142570U CN201922435308.XU CN201922435308U CN212142570U CN 212142570 U CN212142570 U CN 212142570U CN 201922435308 U CN201922435308 U CN 201922435308U CN 212142570 U CN212142570 U CN 212142570U
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- dispersion
- auxiliary material
- shaft
- kettle
- stirring
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- 238000005406 washing Methods 0.000 title claims abstract description 38
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 13
- 238000005253 cladding Methods 0.000 title claims abstract description 9
- 239000010406 cathode material Substances 0.000 title claims description 7
- 239000000463 material Substances 0.000 claims abstract description 65
- 239000006185 dispersion Substances 0.000 claims abstract description 64
- 238000003756 stirring Methods 0.000 claims abstract description 54
- 238000000576 coating method Methods 0.000 claims abstract description 26
- 239000011248 coating agent Substances 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 230000008676 import Effects 0.000 claims abstract description 4
- 229910000619 316 stainless steel Inorganic materials 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 2
- 239000007774 positive electrode material Substances 0.000 claims 6
- 230000001174 ascending effect Effects 0.000 claims 1
- 239000007788 liquid Substances 0.000 abstract description 8
- 239000010405 anode material Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 18
- 229910052759 nickel Inorganic materials 0.000 description 14
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000003513 alkali Substances 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 2
- 229910052808 lithium carbonate Inorganic materials 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
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- Battery Electrode And Active Subsutance (AREA)
Abstract
The utility model discloses a lithium battery anode material washing coating kettle, which comprises a kettle body, a feed inlet, a water inlet, a discharge port, a stirring shaft, a stirring motor and a U-shaped stirring paddle; a dispersion shaft parallel to the stirring shaft is arranged in the inner cavity of the kettle body, the dispersion shaft is connected with a dispersion motor, and a dispersion disc is arranged on the dispersion shaft; the upper portion of the cauldron body is equipped with the auxiliary material import, the auxiliary material access connection has the auxiliary material filling tube, the auxiliary material filling tube is close to dispersion axis and with dispersion axis parallel arrangement at cauldron internal chamber. The utility model discloses an auxiliary material filling tube and dispersion axle parallel arrangement, and be close to the dispersion axle, during the auxiliary material filling tube gos deep into the material, the export of auxiliary material filling tube and dispersion impeller are at same horizontal position or a little more than dispersion impeller, consequently wash or cladding in-process, treat to wash material or auxiliary material and add in the liquid after promptly by dispersion impeller stirring dissolved in liquid, improved the dispersibility of adding back material greatly.
Description
Technical Field
The utility model relates to a washing cladding equipment, especially a lithium cell cathode material washing cladding cauldron.
Background
In recent years, the new energy automobile industry in China is developed vigorously along with policy warm air, the market space of the power battery is wide, and the high-specific-energy power battery is the key point of future research and development and industrialization; a large number of researches show that the high-nickel anode material (Ni is more than or equal to 80 percent), has higher reversible specific capacity (more than 200mAh/g) and better cycle stability, and is suitable to be used as the anode material for the high-specific-energy power battery. Although the high nickel material has a high specific discharge capacity, the material has the disadvantages of high total alkali on the surface (lithium carbonate and lithium hydroxide remained on the surface), relatively unstable structure and the like, and the application and development of the material are limited.
The improvement direction of the existing high-nickel material battery material mainly focuses on alkali reduction by water washing and coating of the material, the high-nickel ternary material is subjected to a water washing process after being sintered for one time, residual alkali on the surface of the high-nickel ternary material is removed, the water washing process is usually completed by a stirring kettle, but the high-nickel ternary material is afraid of water and causes loss to the material by water washing, so the time, solid-to-liquid ratio, stirring strength and the like in the water washing process are closely related to the water washing effect. The material is coated after being washed by water, and because the surface of the high-nickel ternary material is highly sensitive to humidity and carbon dioxide, in order to improve the surface stability of the material, a layer of material with a stable structure needs to be coated on the surface of the material, the wet coating is carried out in a stirring kettle, liquid can be contacted with the ternary material in the wet coating process, and if the time control is improper, the liquid can also react with the ternary material body, so that the decomposition of the trivalent nickel is caused. Therefore, the washing effect and the coating uniformity of the high-nickel ternary material influence the performance of the material, and most of the existing washing coating kettles have the problems of uncontrollable reaction temperature, poor material dispersibility, incomplete washing, uneven coating and the like. Therefore, if the dispersibility of the material is improved to make the water washing complete or the coating uniform, the stirring time needs to be increased, but the increased stirring time will cause the high-nickel ternary material body to react with the water to cause the decomposition of the trivalent nickel. Therefore, a water-washing coating kettle with good dispersibility and controllable temperature is needed to be found.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a washing cladding cauldron that the dispersibility is good, the temperature is controllable.
The utility model provides a technical scheme that its technical problem adopted is: a lithium battery anode material washing coating kettle comprises a kettle body, wherein a heat-insulating jacket is coated outside the kettle body, a feed inlet and a water inlet are formed in the upper part of the kettle body, a discharge outlet is formed in the bottom of the kettle body, a stirring shaft is arranged at the central axis of an inner cavity of the kettle body, the stirring shaft extends out of the kettle body and is connected with a stirring motor, and a U-shaped stirring paddle is arranged at the bottom of the stirring shaft; a dispersion shaft parallel to the stirring shaft is arranged in the inner cavity of the kettle body, the dispersion shaft extends out of the kettle body and is connected with a dispersion motor, and a dispersion disc is arranged on the dispersion shaft; the upper portion of the cauldron body is equipped with the auxiliary material import, the auxiliary material access connection has the auxiliary material filling tube, the auxiliary material filling tube be close to dispersion axle and with dispersion axle parallel arrangement at cauldron internal chamber, the export of auxiliary material filling tube and dispersion impeller are at same horizontal position or be a little higher than the dispersion impeller.
Preferably, dispersion epaxial from the epaxial equidistance of axle bottom upward is provided with two at least dispersion impeller, the distance of the first dispersion impeller in bottom and auxiliary material filling pipe export is 1 ~ 3 cm. The dispersion disc may include a dispersion screw or a dispersion blade, the dispersion disc may include a disc fixedly connected to the lower end of the dispersion shaft, and blades arranged at intervals in the circumferential direction of the disc, or at least two blades may be directly connected to the lower end of the dispersion shaft.
Preferably, the kettle body is U-shaped and is matched with the U-shaped stirring paddle, and the distance between the stirring paddle and the bottom of the kettle body is less than 1 cm. The U-shaped stirring paddle can avoid incomplete washing or uneven coating of materials due to large specific gravity and bottom sinking to the utmost extent, and improve the washing effect and the coating uniformity.
Preferably, the heat-insulating jacket is provided with an inlet and an outlet which are communicated with the inside of the heat-insulating jacket, and the inlet and the outlet are respectively used for inputting and outputting heating or cooling media. The temperature in the coating kettle can be adjusted to meet the temperature requirement of the water washing or coating process.
Preferably, the kettle body is covered with a kettle cover, and the stirring motor and the dispersion motor are both fixed on the kettle cover. Stirring motor and dispersion motor be different motors, consequently can select the starter motor according to the difference of demand, when not advancing the auxiliary material in the auxiliary material inlet pipe promptly, can select only to open stirring motor, can select to open dispersion motor or increase the stirring rate of dispersion axle when advancing the auxiliary material.
Preferably, the upper part of the kettle body is provided with an observation port.
Preferably, the kettle body, the stirring shaft, the stirring paddle, the dispersing shaft and the dispersing disc are made of 316 stainless steel materials.
The utility model has the advantages that: the utility model discloses an auxiliary material filling tube and dispersion axle parallel arrangement, and be close to the dispersion axle, the auxiliary material filling tube is deep into in the material, and the auxiliary material filling tube export is at same horizontal position or a little higher than the dispersion impeller with the dispersion impeller, so in washing or cladding process, after washing material or auxiliary material add in liquid promptly by the dispersion impeller stirring evenly dissolve in liquid, improved the dispersibility after the material gets into liquid greatly; meanwhile, the U-shaped stirring paddle is close to the bottom of the kettle body, so that incomplete washing or uneven coating caused by the fact that materials with higher specific gravity in the kettle sink to the bottom is prevented; the synergistic effect of the dispersing shaft and the stirring shaft greatly improves the washing effect and the coating effect, and further improves the surface stability of the high-nickel ternary cathode material.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
labeled as: 1-heat preservation jacket, 2-kettle body, 3-observation opening, 4-feeding opening, 5-motor, 6-water inlet, 7-auxiliary material feeding pipe, 8-dispersing shaft, 9-dispersing disc, 10-discharging opening, 11-stirring paddle and 12-stirring shaft.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
Example (b):
as shown in fig. 1, a lithium battery anode material washing coating kettle comprises a U-shaped kettle body, wherein a heat-insulating jacket is coated outside the kettle body, a feed inlet, a water inlet and an observation port are formed in the upper part of the kettle body, a discharge port is formed in the bottom of the kettle body, a stirring shaft is arranged at the central axis of an inner cavity of the kettle body, the stirring shaft extends out of the kettle body and is connected with a stirring motor, a U-shaped stirring paddle is arranged at the bottom of the stirring shaft, the U-shaped stirring paddle is matched with the U-shaped kettle body, the distance between the U-shaped stirring paddle and the bottom of the U-shaped kettle body is 0.8cm, and the distance between the U-shaped stirring paddle and the side wall of the U; a dispersion shaft parallel to the stirring shaft is arranged in the inner cavity of the kettle body, the dispersion shaft extends out of the kettle body and is connected with a dispersion motor, and a dispersion disc is arranged at the bottom of the dispersion shaft; the upper portion of the cauldron body is equipped with the auxiliary material import, the auxiliary material access connection has the auxiliary material filling tube, the auxiliary material filling tube be close to dispersion axle and with dispersion axle parallel arrangement at cauldron internal chamber, the dispersion impeller constitute by four dispersion blades, during the dispersion blade stirring with the nearest distance of auxiliary material filling tube export is 3 cm.
The heat-insulating jacket is provided with an inlet and an outlet which are communicated with the inside of the heat-insulating jacket, and the inlet and the outlet are respectively used for inputting and outputting heating or cooling media. The kettle body covers the kettle cover, and the stirring motor and the dispersion motor are both fixed on the kettle cover. The kettle body, the stirring shaft, the stirring paddle, the dispersing shaft and the dispersing disc are made of 316 stainless steel.
Compared with the high-nickel ternary cathode material which is coated by a water washing coating kettle and only has one stirring shaft and no dispersion shaft under the same condition, the high-nickel ternary cathode material which is coated by the water washing coating kettle and is washed by water by adopting the water washing coating device has the advantages that the residual alkali amount is obviously reduced, and the capacity retention rate is improved by 4% for 100 times.
TABLE 1 comparison of the properties of the NCM811 materials after washing with water in different washing tanks
| LiOH/％ | Li2CO3/％ | Discharge capacity/mAh/g | Retention ratio of 100% | |
| Comparative example | 0.32 | 0.12 | 200 | 86 |
| This example | 0.21 | 0.09 | 203 | 90 |
Claims (7)
1. The utility model provides a lithium cell cathode material washing cladding cauldron, includes the cauldron body, the outside cladding of the cauldron body has the heat preservation to press from both sides the cover, the upper portion of the cauldron body is equipped with feed inlet, water inlet, the bottom of the cauldron body is provided with discharge gate, its characterized in that: a stirring shaft is arranged at the central axis of the inner cavity of the kettle body, extends out of the kettle body and is connected with a stirring motor, and the bottom of the stirring shaft is provided with a U-shaped stirring paddle; a dispersion shaft parallel to the stirring shaft is arranged in the inner cavity of the kettle body, the dispersion shaft extends out of the kettle body and is connected with a dispersion motor, and a dispersion disc is arranged on the dispersion shaft; the upper portion of the cauldron body is equipped with the auxiliary material import, the auxiliary material access connection has the auxiliary material filling tube, the auxiliary material filling tube is close to dispersion axle and with dispersion axle parallel arrangement at cauldron internal chamber, the export and the dispersion impeller of auxiliary material filling tube are at same horizontal position or be higher than the dispersion impeller.
2. The lithium battery positive electrode material water-washing coating kettle according to claim 1, characterized in that: the epaxial ascending equidistance of follow shaft bottom of dispersion is provided with two at least dispersion impeller, the distance of the first dispersion impeller in bottom and auxiliary material filling tube export is 1 ~ 3 cm.
3. The lithium battery positive electrode material water-washing coating kettle as claimed in claim 1 or 2, wherein: the kettle body is U-shaped and is matched with the U-shaped stirring paddle, and the distance between the stirring paddle and the bottom of the kettle body is less than 1 cm.
4. The lithium battery positive electrode material water-washing coating kettle according to claim 1, characterized in that: the heat-insulating jacket is provided with an inlet and an outlet which are communicated with the inside of the heat-insulating jacket, and the inlet and the outlet are respectively used for inputting and outputting heating or cooling media.
5. The lithium battery positive electrode material water-washing coating kettle according to claim 1, characterized in that: the kettle body covers the kettle cover, and the stirring motor and the dispersion motor are both fixed on the kettle cover.
6. The lithium battery positive electrode material water-washing coating kettle according to claim 1, characterized in that: an observation port is arranged at the upper part of the kettle body.
7. The lithium battery positive electrode material water-washing coating kettle according to claim 1, characterized in that: the kettle body, the stirring shaft, the stirring paddle, the dispersing shaft and the dispersing disc are made of 316 stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922435308.XU CN212142570U (en) | 2019-12-30 | 2019-12-30 | Lithium cell cathode material washing cladding cauldron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922435308.XU CN212142570U (en) | 2019-12-30 | 2019-12-30 | Lithium cell cathode material washing cladding cauldron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212142570U true CN212142570U (en) | 2020-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922435308.XU Active CN212142570U (en) | 2019-12-30 | 2019-12-30 | Lithium cell cathode material washing cladding cauldron |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212142570U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114011795A (en) * | 2021-09-30 | 2022-02-08 | 宜宾锂宝新材料有限公司 | Lithium battery material washing method and device |
| WO2024000881A1 (en) * | 2022-06-30 | 2024-01-04 | 宜昌邦普循环科技有限公司 | Coating device and coating system for positive electrode material of lithium battery |
-
2019
- 2019-12-30 CN CN201922435308.XU patent/CN212142570U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114011795A (en) * | 2021-09-30 | 2022-02-08 | 宜宾锂宝新材料有限公司 | Lithium battery material washing method and device |
| WO2024000881A1 (en) * | 2022-06-30 | 2024-01-04 | 宜昌邦普循环科技有限公司 | Coating device and coating system for positive electrode material of lithium battery |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 644000 No. 2, east section of Xinggang Road, Cuiping District, Yibin City, Sichuan Province Patentee after: Yibin Lithium Treasure New Materials Co.,Ltd. Country or region after: China Address before: No. 2 Xinggang Road East Section, Cuiping District, Yibin City, Sichuan Province Patentee before: Yibin Libao New Materials Co.,Ltd. Country or region before: China |