CN220017940U - Positive plate processing device - Google Patents
Positive plate processing device Download PDFInfo
- Publication number
- CN220017940U CN220017940U CN202321033388.6U CN202321033388U CN220017940U CN 220017940 U CN220017940 U CN 220017940U CN 202321033388 U CN202321033388 U CN 202321033388U CN 220017940 U CN220017940 U CN 220017940U
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- CN
- China
- Prior art keywords
- positive plate
- electrode sheet
- positive electrode
- heater
- dryer
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- 238000012545 processing Methods 0.000 title claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 239000002274 desiccant Substances 0.000 claims description 18
- 238000007789 sealing Methods 0.000 claims description 17
- 229920001296 polysiloxane Polymers 0.000 claims 1
- 238000001035 drying Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 9
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000009489 vacuum treatment Methods 0.000 description 6
- 239000012535 impurity Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229910001415 sodium ion Inorganic materials 0.000 description 5
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 239000001569 carbon dioxide Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 229910000314 transition metal oxide Inorganic materials 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000000741 silica gel Substances 0.000 description 3
- 229910002027 silica gel Inorganic materials 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 239000007774 positive electrode material Substances 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- DLYUQMMRRRQYAE-UHFFFAOYSA-N tetraphosphorus decaoxide Chemical compound O1P(O2)(=O)OP3(=O)OP1(=O)OP2(=O)O3 DLYUQMMRRRQYAE-UHFFFAOYSA-N 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 1
- 241000519995 Stachys sylvatica Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910000365 copper sulfate Inorganic materials 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- DCYOBGZUOMKFPA-UHFFFAOYSA-N iron(2+);iron(3+);octadecacyanide Chemical class [Fe+2].[Fe+2].[Fe+2].[Fe+3].[Fe+3].[Fe+3].[Fe+3].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] DCYOBGZUOMKFPA-UHFFFAOYSA-N 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 229920000447 polyanionic polymer Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- HUAUNKAZQWMVFY-UHFFFAOYSA-M sodium;oxocalcium;hydroxide Chemical compound [OH-].[Na+].[Ca]=O HUAUNKAZQWMVFY-UHFFFAOYSA-M 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Drying Of Solid Materials (AREA)
Abstract
The utility model belongs to the technical field of secondary batteries, and particularly relates to a positive plate processing device which comprises a containing box body, a dryer, a heater and a vacuum device, wherein the dryer is communicated with the containing box body, the containing box body is provided with a containing cavity for containing a positive plate and a door body for covering the containing cavity, the dryer is communicated with the containing cavity, the vacuum device is used for vacuumizing the containing cavity, and the heater is used for heating the positive plate in the containing cavity. The positive plate treatment device can carry out drying treatment on the positive plate, improves the stability of the positive plate in air, and avoids the influence on electrochemical performance caused by quality change in the manufacturing, transporting and application processes.
Description
Technical Field
The utility model belongs to the technical field of secondary batteries, and particularly relates to a positive plate processing device.
Background
With the global growing demand for efficient, clean energy, energy storage technologies are facing tremendous opportunities and challenges. The sodium ion battery has the advantages of economy, safety, environmental protection and the like, so that the sodium ion battery has great development advantages on the surface in the large-scale energy storage direction.
Currently, the positive electrode materials of sodium ion batteries mainly comprise polyanion materials, prussian blue analogues, organic compounds, layered transition metal oxides and the like. Among them, layered transition metal oxides are attracting attention due to their simple structure, easy synthesis, high operating potential, and the like.
In the layered transition metal oxide, sodium ions in the material are easily exchanged with water molecules in the air, thereby causing insulating NaOH and Na to appear on the surface of the positive electrode material 2 CO 3 Is a cumulative sum of (a) and (b). Under the influence of water molecules, CO in the air 2 Formation of CO in the TM layer 3 2- Resulting in poor stability in air. This not only compromises electrochemical performance, but also presents challenges for its manufacture, transportation and application. And the instability still exists after pole pieces are pressed by materials, coating and rollers, and the existing production process is consistent with the lithium-ion technology and does not consider H 2 O and CO 2 To lamellar transitionThe influence of the stability of the metal oxide host material, therefore, development of a production apparatus adapted to the layered transition metal oxide is urgent.
Disclosure of Invention
The utility model aims at: aiming at the defects of the prior art, the positive plate treatment device is provided, so that the stability of the positive plate in the air is effectively improved, and the quality of the positive plate is prevented from being poor in the manufacturing, transporting and application processes, and the electrochemical performance is prevented from being influenced.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the utility model provides an anodal piece processing apparatus, includes holds the box, with hold the desicator, heater and the vacuum apparatus that the box communicates, hold the box be provided with be used for placing the positive plate hold the chamber and be used for the lid to close hold the door body in chamber, the desicator with hold the chamber intercommunication, the vacuum apparatus is used for carrying out the evacuation to holding the chamber, the heater is used for carrying out heating treatment to holding intracavity anodal piece.
Wherein, the desicator sets up in one lateral wall that holds the chamber.
Wherein the volume ratio of the dryer to the accommodating cavity is 1-2:8-15. The volume ratio of the dryer to the receiving chamber may be 1:8, 1:9, 1:10, 1:11, 1:12, 1:13, 1:14, 1:15,2:9, 2:10, 2:11, 2:12, 2:13, 2:14, 2:15. The drying effect can be improved by setting a certain volume ratio.
Wherein, the drier is arranged in the drier. The drying agent is arranged to absorb moisture in the accommodating cavity, and the drying effect of the dryer can be prolonged by changing the drying agent, so that the drying device is convenient and efficient to use.
Wherein the drying agent is granular drying agent or powdery drying agent. The granular drying agent has better drying effect and longer drying duration than the powdery drying agent. Preferably, the components of the drying agent are one of calcium sulfate, phosphorus pentoxide, anhydrous copper sulfate, solid caustic soda, soda lime, anhydrous calcium chloride, anhydrous magnesium sulfate, silica gel and active alumina.
Wherein, the heater is one of a heating rod, an infrared heater and an electromagnetic heater. When the heater works, electric energy is converted into heat, so that the heating effect is achieved.
Wherein, the vacuum device is a vacuum pump.
Wherein, the edge that the door body and holding the chamber lid were closed is provided with the sealing strip. Sealing performance of holding the chamber can be increased to the sealing strip, avoids external moisture to get into, improves the drying effect.
Wherein, the sealing strip is provided with two. The sealing effect can be improved by the two sealing strips, so that certain vacuum property can be ensured, and external moisture can be prevented from entering.
Wherein, the sealing strip is a silica gel sealing strip.
Compared with the prior art, the utility model has the beneficial effects that: the utility model relates to a positive plate processing device, which is provided with a containing cavity, a heater, a vacuum device and a dryer, wherein a positive plate is placed in the containing cavity, a door body covers the containing cavity, so that the positive plate is processed in a relatively sealed space, the vacuum device is used for vacuumizing the containing cavity, moisture and air in the containing cavity are discharged, the heater heats the air in the containing cavity, the positive plate is enabled to evaporate and remove moisture at a higher temperature, a dryer contains a drying agent, moisture and carbon dioxide in the containing cavity can be absorbed and removed, and the vacuum device, the heater and the dryer are matched for use, so that the residual moisture and impurities in the positive plate are removed, the stability of the positive plate is improved, and the quality stability of the positive plate can be maintained in the air for a long time. Wherein, vacuum device, heater and desicator can be controlled alone respectively, also perhaps simultaneous working, when needs need be to the positive plate when removing moisture fast, vacuum device, heater and desicator simultaneous working make the positive plate detach moisture fast, when needs to preserve for a long time, just can start vacuum device and desicator or just use the desicator just can carry out sealed save, can very big energy saving and cost like this.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a capacity comparison chart of the positive electrode sheets of comparative example 1 and example 1.
Wherein: 1. a housing case; 2. a dryer; 3. a heater; 4. a vacuum device; 5. a door body.
Detailed Description
Certain terms are used throughout the description and claims to refer to particular components. Those of skill in the art will appreciate that a hardware manufacturer may refer to the same component by different names. The description and claims do not take the form of an element differentiated by name, but rather by functionality. As used throughout the specification and claims, the word "comprise" is an open-ended term, and thus should be interpreted to mean "include, but not limited to. By "substantially" is meant that within an acceptable error range, a person skilled in the art is able to solve the technical problem within a certain error range, substantially achieving the technical effect.
In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
The present utility model will be described in further detail below with reference to the drawings, but is not limited thereto.
Example 1
As shown in fig. 1, the positive plate processing device of the utility model comprises a containing box body 1, a dryer 2 communicated with the containing box body 1, a heater 3 for heating the containing box body 1 and a vacuum device 4 for vacuumizing the containing box body 1, wherein the containing box body 1 is provided with a containing cavity for placing a positive plate and a door body 5 for covering the containing cavity, and the dryer 2 is communicated with the containing cavity. When the vacuum device works, the positive plate is placed in the accommodating cavity, the door body 5 is covered with the accommodating cavity, the positive plate is located in an opposite space, the vacuum device 4 works, water and gas in the accommodating cavity are pumped out of the accommodating cavity, and an opposite negative pressure is formed in the accommodating cavity. The heating device works to heat, so that residual moisture and impurities are evaporated and discharged from the positive plate at a higher temperature, the drier in the drier 2 absorbs the moisture, carbon dioxide and other impurities discharged from the positive plate, and the positive plate removes the residual moisture, carbon dioxide and other impurities in the positive plate under the combined action of vacuum, high temperature and the drier 2, so that the stability is improved, the positive plate can be kept in the air for a longer time, and the electrochemical stability is kept.
Wherein, the dryer 2 sets up in the lateral wall that holds the chamber, and the dryer 2 of being convenient for is to the absorption of impurity such as moisture and carbon dioxide, improves drying capacity.
Wherein the volume ratio of the dryer 2 to the accommodating cavity is 1:10.
The dryer 2 of the present embodiment is provided with a desiccant therein. The drying agent is granular drying agent. The powdery drying agent is easy to agglomerate after absorbing moisture, can not be dried continuously, and the granular drying agent is not easy to agglomerate after absorbing moisture, so that the effective drying time is long, and the drying effect is good.
The heater 3 of the present embodiment is a heating rod capable of converting electric energy into heat energy, thereby raising the temperature of the positive electrode sheet. The heater 3 may be one of a heating rod, an infrared heater 3, and an electromagnetic heater 3.
The vacuum device 4 of the present embodiment is a vacuum pump.
The edge of the door body 5 and the accommodating cavity are covered with sealing strips. The sealing strip can make the door body 5 more inseparable with hold the chamber lid and close the back, avoids external air to get into and holds the chamber, influences the quality that the positive plate handled. Preferably, the sealing strips are provided with two strips. Preferably, the sealing strip is a silica gel sealing strip.
Comparative example 1: a conventional positive electrode sheet was used.
The positive plate which is not subjected to high-temperature vacuum or airtight treatment, namely the positive plate of the comparative example 1, is placed for less than 24 hours under a low-humidity environment (the dew point is less than or equal to minus 40 ℃) to generate pitting&White spots. Indicating that under the conventional environment, the catalyst absorbs CO in the air under the promotion of higher moisture 2 Leading to the surface formation of Na 2 CO 3 The collapse of the layered material structure and the degradation of the electrochemical properties are exacerbated.
The positive plate of the example 1 is subjected to high-temperature vacuum or airtight treatment and placed for 20 days in the same low-humidity environment (the dew point is less than or equal to minus 40 ℃), and the surface of the pole piece is still unchanged obviously. Indicating that the high-temperature vacuum treatment can effectively avoid CO in the air 2 Adverse effect is caused on the sodium ion positive pole piece, and the stability of the pole piece is further improved (no pock is generated on the surface of the pole piece placed for 20 days).
As shown in fig. 2 below, the battery was assembled by synchronizing the electrode sheet (negative electrode sheet of example 1) with which no pocks had been formed on the surface thereof by high-temperature vacuum treatment with the electrode sheet (negative electrode sheet of comparative example 1) with which no pocks had been formed on the surface thereof by high-temperature vacuum treatment, and it was found that the battery assembled by the electrode sheet with high-temperature vacuum treatment had an increase in battery capacity of about 2% compared with the battery assembled by the electrode sheet without high-temperature vacuum treatment. This shows that the high temperature vacuum treatment of the pole piece after the slitting process can effectively slow down the CO in the air 2 Embedding in layered oxide, avoiding damage to cell capacity and cycle life.
While the foregoing description illustrates and describes several preferred embodiments of the present utility model, it is to be understood that the utility model is not limited to the forms disclosed herein, but is not to be construed as limited to other embodiments, and is capable of numerous other combinations, modifications and environments and is capable of changes or modifications within the scope of the inventive concept as described herein, either as a result of the foregoing teachings or as a result of the knowledge or technology in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the utility model are intended to be within the scope of the appended claims.
Claims (10)
1. The utility model provides a positive plate processing apparatus, its characterized in that, including holding the box, with hold the desicator, heater and the vacuum apparatus of box intercommunication, hold the box and be provided with the chamber that holds that is used for placing the positive plate and be used for the lid to close hold the door body in chamber, the desicator with hold the chamber intercommunication, the vacuum apparatus is used for carrying out the evacuation to holding the chamber, the heater is used for carrying out heating treatment to holding intracavity positive plate.
2. The positive electrode sheet processing apparatus according to claim 1, wherein the dryer is provided at a side wall of the housing chamber.
3. The positive electrode sheet treatment apparatus according to claim 1, wherein a volume ratio of the dryer to the accommodating chamber is 1 to 2:8 to 15.
4. The positive electrode sheet processing apparatus according to claim 1, wherein a desiccant is provided in the dryer.
5. The positive electrode sheet treatment apparatus according to claim 4, wherein the desiccant is a granular desiccant or a powdery desiccant.
6. The positive electrode sheet processing apparatus according to claim 1, wherein the heater is one of a heating rod, an infrared heater, and an electromagnetic heater.
7. The positive electrode sheet processing apparatus according to claim 1, wherein the vacuum apparatus is a vacuum pump.
8. The positive electrode sheet processing apparatus according to claim 1, wherein a sealing strip is provided at an edge of the door body which is covered with the accommodating chamber.
9. The positive electrode sheet processing apparatus according to claim 8, wherein the sealing strip is provided with two strips.
10. The positive electrode sheet processing apparatus according to claim 8, wherein the sealing tape is a silicone sealing tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321033388.6U CN220017940U (en) | 2023-05-04 | 2023-05-04 | Positive plate processing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321033388.6U CN220017940U (en) | 2023-05-04 | 2023-05-04 | Positive plate processing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220017940U true CN220017940U (en) | 2023-11-14 |
Family
ID=88685151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321033388.6U Active CN220017940U (en) | 2023-05-04 | 2023-05-04 | Positive plate processing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220017940U (en) |
-
2023
- 2023-05-04 CN CN202321033388.6U patent/CN220017940U/en active Active
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