CN116393343B - Lithium battery pole piece drying equipment - Google Patents
Lithium battery pole piece drying equipment Download PDFInfo
- Publication number
- CN116393343B CN116393343B CN202310387512.7A CN202310387512A CN116393343B CN 116393343 B CN116393343 B CN 116393343B CN 202310387512 A CN202310387512 A CN 202310387512A CN 116393343 B CN116393343 B CN 116393343B
- Authority
- CN
- China
- Prior art keywords
- pole piece
- drying
- shell
- blower
- piece coating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001035 drying Methods 0.000 title claims abstract description 49
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 23
- 239000011248 coating agent Substances 0.000 claims abstract description 39
- 238000000576 coating method Methods 0.000 claims abstract description 39
- 238000005422 blasting Methods 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 8
- 230000033001 locomotion Effects 0.000 claims description 7
- 230000033228 biological regulation Effects 0.000 claims description 5
- 230000005684 electric field Effects 0.000 claims description 5
- 238000005336 cracking Methods 0.000 abstract description 5
- 210000001787 dendrite Anatomy 0.000 abstract description 4
- 239000002245 particle Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/04—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
- B05D3/0406—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being air
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The application belongs to the technical field of drying, and particularly relates to lithium battery pole piece drying equipment. The occurrence of dry cracks during drying affects the quality of the product. The application provides lithium battery pole piece drying equipment which comprises a conveying assembly and a drying assembly which are matched with each other, wherein a pole piece coating is placed on the conveying assembly, and the drying assembly comprises a uniform component and a plurality of drying components which are sequentially arranged. The lithium dendrite is reduced by more effectively and uniformly drying, and the drying process does not generate dry cracking, so that the performance and the safety of the lithium battery pole piece are improved.
Description
Technical Field
The application belongs to the technical field of drying, and particularly relates to lithium battery pole piece drying equipment.
Background
Along with the requirement of energy-saving technology, the application of the lithium ion battery is more and more extensive, and the drying quality of the lithium battery pole piece directly influences the performance and the safety of the battery. The existing drying equipment mainly has two problems in the process of completing the drying of the lithium battery electrode, namely one is the problem of lithium dendrite caused by uneven solid particles, and the other is the problem of cracking and falling of coating materials in the drying process.
The lithium dendrite problem can be reduced by oscillating solid particles, and the solid particles are in viscous liquid because of small mass, and the common inertial oscillation method is difficult to work.
The occurrence of dry cracks during drying affects the quality of the product.
Disclosure of Invention
1. Technical problem to be solved
The application provides lithium battery pole piece drying equipment based on the problem that the quality of products is affected by dry cracking in the drying process.
2 technical proposal
In order to achieve the above purpose, the application provides lithium battery pole piece drying equipment which comprises a conveying assembly and a drying assembly which are matched with each other, wherein a pole piece coating is placed on the conveying assembly, and the drying assembly comprises a uniform component and a plurality of drying components which are sequentially arranged.
Another embodiment provided by the application is: the conveying assembly comprises a plurality of rollers which are sequentially arranged, and the pole piece coating rolls on the rollers.
Another embodiment provided by the application is: the uniform component comprises an electromagnetic uniform cavity and an oscillator which are connected with each other, and the pole piece coating passes through the electromagnetic uniform cavity.
Another embodiment provided by the application is: the electromagnetic uniform cavity comprises an insulating shell, a cathode plate and a first magnetic pole piece which are sequentially stacked are arranged at one end in the insulating shell, a second magnetic pole piece and an anode plate which are sequentially stacked are arranged at the other end in the insulating shell, the cathode plate is connected with a power supply, the anode plate is connected with the power supply, and when the pole piece coating passes through the insulating shell, a magnetic field and an electric field are formed in the insulating shell to uniformly treat the pole piece coating.
Another embodiment provided by the application is: the drying component is an adjustable air blower, the adjustable air blower is arranged above the pole piece coating, and the adjustable air blower dries the pole piece coating.
Another embodiment provided by the application is: the adjustable blower comprises a blower housing, a regulating plate is arranged in the blower housing, the regulating plate is connected with the blower housing through a fixing assembly, and the fixing assembly is arranged on the blower housing.
Another embodiment provided by the application is: the adjustable blower comprises a rectangular air duct and an arc-shaped air duct which are connected with each other.
Another embodiment provided by the application is: the fixing assembly comprises a first supporting block and a second supporting block, the first supporting block is arranged at one end of the air blasting shell, the first supporting block is connected with the air blasting shell through a first bolt, the second supporting block is arranged at the other end of the air blasting shell, and the second supporting block is connected with the air blasting shell through a second bolt.
Another embodiment provided by the application is: the regulation and control board will the blast housing divide into impact air flow district and drainage district, along the direction of pole piece coating motion, impact air flow district reduces gradually, the drainage district increases gradually.
Another embodiment provided by the application is: the regulation and control board is connected with the blast shell through a fixed angle.
3. Advantageous effects
Compared with the prior art, the lithium battery pole piece drying equipment provided by the application has the beneficial effects that:
the lithium battery pole piece drying equipment provided by the application can be used for more effectively and uniformly drying, reducing lithium dendrites, and preventing the drying process from cracking, so that the performance and the safety of the lithium battery pole piece are improved.
The lithium battery pole piece drying equipment provided by the application has the advantage of adjustable wind pressure, and can regulate and control wind pressure at different positions at any time according to the external temperature and humidity environment so as to adapt to the change of the environment.
Drawings
FIG. 1 is a schematic diagram of the working principle of the lithium battery pole piece drying equipment of the application;
FIG. 2 is a schematic illustration of the electromagnetic uniformity chamber structure of the present application;
FIG. 3 is a schematic view of an adjustable blower configuration of the present application;
FIG. 4 is a schematic diagram of a regulatory board of the present application;
FIG. 5 is a schematic diagram of the working principle of the electromagnetic uniform cavity of the application;
fig. 6 is a schematic diagram of the working principle of the adjustable blower of the present application.
Detailed Description
Hereinafter, specific embodiments of the present application will be described in detail with reference to the accompanying drawings, and according to these detailed descriptions, those skilled in the art can clearly understand the present application and can practice the present application. Features from various embodiments may be combined to obtain new implementations, or substituted for certain features from certain embodiments to obtain further preferred implementations, without departing from the principles of the application.
Referring to fig. 1 to 6, the application provides a lithium battery pole piece drying device, which comprises a conveying assembly and a drying assembly which are matched with each other, wherein a pole piece coating 1 is placed on the conveying assembly, and the drying assembly comprises a uniform component and a plurality of drying components which are sequentially arranged.
In the working process, the pole piece coating 1 firstly passes through the uniform component and then passes through the plurality of drying components under the drive of the conveying component, thereby completing the drying process
Further, the conveying assembly comprises a plurality of rollers 4 which are arranged in sequence, and the pole piece coating 1 rolls on the rollers 4.
Further, the uniform component comprises an electromagnetic uniform cavity 2 and an oscillator 5 which are connected with each other, and the pole piece coating 1 passes through the electromagnetic uniform cavity 2.
Further, the electromagnetic uniform cavity 2 comprises an insulating shell 2-1, a cathode plate 2-4 and a first magnetic plate 2-2 which are sequentially stacked are arranged at one end in the insulating shell 2-1, a second magnetic plate 2-3 and an anode plate 2-5 which are sequentially stacked are arranged at the other end in the insulating shell 2-1, the cathode plate 2-4 is connected with a power supply, the anode plate 2-5 is connected with the power supply, and when the pole piece coating 1 passes through the insulating shell 2-1, a magnetic field and an electric field are formed in the insulating shell 2-1 to uniformly treat the pole piece coating 1.
As shown in fig. 5, in the working process, the roller 4 drives the pole piece coating 1 to pass through the electromagnetic uniform cavity 2, the electromagnetic uniform cavity 2 can generate vertical upward electric field and magnetic field under the condition of electrifying, solid particles in the pole piece coating 1 can generate polarized charges on the upper and lower surfaces of the particles under the action of the electric field, and as the electromagnetic uniform cavity 2 is placed on the oscillator 5 (the oscillation direction of the oscillator 5 is parallel to the movement direction of the pole piece coating 1), after the oscillator 5 moves, the upper and lower charged positions of the particles can form cutting magnetic field movement, and according to the charge cutting direction, the particles can be judged to receive opposite acting forces up and down, and the stress directions face the inside of paper and the outside of the paper respectively. Under the action of this force, the particles in the vertical direction will be flattened. The particles after being flattened can also receive the action of magnetic force, but the moment is relatively small at the moment, so that the state of the particles is not influenced. In the reciprocating motion process of the oscillator 5, the stress direction is continuously changed, and the stability of particles is facilitated.
Further, the drying component is an adjustable air blower 3, the adjustable air blower 3 is arranged above the pole piece coating 1, and the adjustable air blower 3 is used for drying the pole piece coating 1.
Further, the adjustable blower 3 comprises a blower housing 3-1, a regulating plate 3-2 is arranged in the blower housing 3-1, the regulating plate 3-2 is connected with the blower housing 3-1 through a fixing component, and the fixing component is arranged on the blower housing 3-1.
Further, the adjustable blower 3 comprises a rectangular air duct and an arc-shaped air duct which are connected with each other. The direction of the wind can be changed by changing the arc of the arcuate tunnel, where the arcuate tunnel portion is adjustable.
Further, the fixing assembly comprises a first supporting block 3-3 and a second supporting block, the first supporting block 3-3 is arranged at one end of the air blasting shell 3-1, the first supporting block 3-3 is connected with the air blasting shell 3-1 through a first bolt 3-4, the second supporting block is arranged at the other end of the air blasting shell 3-1, and the second supporting block is connected with the air blasting shell 3-1 through a second bolt.
Further, the regulation and control plate 3-2 divides the blower housing into an impact air flow area and a drainage area, the impact air flow area gradually decreases and the drainage area gradually increases along the moving direction of the pole piece coating 1.
As shown in FIG. 6, the air blast shell 3-1 is internally divided into an impact air flow area and a drainage area by the control plate 3-2, the air in the impact air flow area directly acts on the upper part of the pole piece coating 1, the air in the drainage area directly flows away through the flow guide of the control plate 3-2 and does not act on the upper part of the pole piece coating 1, the fluid movement of the drainage area drives the air in the lower part of the drainage area to flow, so that a low-pressure area is formed, and the low-pressure area can attract the air in the impact air flow area, so that the impact force of the air in the low-impact air flow area on the pole piece coating 1 is reduced, and the probability of pole piece cracking is reduced. At the same time, the presence of the low pressure region facilitates the evaporation of the gas inside the pole piece coating 1.
Further, the regulating plate 3-2 is connected to the blower housing 3-1 through a fixing angle 3-2-1.
In the working process, a plurality of adjustable blowers 3 are arranged along the moving direction of the pole piece coating 1, the impact airflow area is gradually reduced, and the drainage area is gradually increased. The reason for this distribution is: in the initial stage of drying, the interior of the pole piece coating 1 has more liquid and good fluidity, can receive larger airflow impact, and the large airflow is beneficial to accelerating the evaporation speed. Along the movement direction, the liquid in the pole piece coating 1 is reduced along with the evaporation of the gas, and the volume of the impact airflow area is reduced at the moment, so that the impact airflow can be reduced and prevented. The increase of the drainage area is also beneficial to forming a larger low-pressure area on the upper surface of the pole piece coating 1, and the drying uniformity is facilitated through the alternate action of the impact and the low-pressure area.
Although the application has been described with reference to specific embodiments, those skilled in the art will appreciate that many modifications are possible in the construction and detail of the application disclosed within the spirit and scope thereof. The scope of the application is to be determined by the appended claims, and it is intended that the claims cover all modifications that are within the literal meaning or range of equivalents of the technical features of the claims.
Claims (3)
1. A lithium battery pole piece drying device is characterized in that: the pole piece coating device comprises a conveying assembly and a drying assembly which are matched with each other, wherein a pole piece coating is placed on the conveying assembly, and the drying assembly comprises a uniform component and a plurality of drying components which are sequentially arranged; the uniform component comprises an electromagnetic uniform cavity and an oscillator which are connected with each other, and the pole piece coating passes through the electromagnetic uniform cavity; the electromagnetic uniform cavity comprises an insulating shell, wherein a cathode plate and a first magnetic pole piece which are sequentially stacked are arranged at one end in the insulating shell, a second magnetic pole piece and an anode plate which are sequentially stacked are arranged at the other end in the insulating shell, the cathode plate is connected with a power supply, the anode plate is connected with the power supply, and when the pole piece coating passes through the insulating shell, a magnetic field and an electric field are formed in the insulating shell to uniformly treat the pole piece coating; the drying component is an adjustable blower, the adjustable blower is arranged above the pole piece coating, and the adjustable blower is used for drying the pole piece coating; the adjustable blower comprises a blower shell, a regulating plate is arranged in the blower shell, the regulating plate is connected with the blower shell through a fixing component, and the fixing component is arranged on the blower shell; the adjustable blower comprises a rectangular air duct and an arc-shaped air duct which are connected with each other; the fixing assembly comprises a first supporting block and a second supporting block, the first supporting block is arranged at one end of the air blasting shell, the first supporting block is connected with the air blasting shell through a first bolt, the second supporting block is arranged at the other end of the air blasting shell, and the second supporting block is connected with the air blasting shell through a second bolt; the regulation and control board will the blast housing divide into impact air flow district and drainage district, along the direction of pole piece coating motion, impact air flow district reduces gradually, the drainage district increases gradually.
2. The lithium battery pole piece drying apparatus of claim 1, wherein: the conveying assembly comprises a plurality of rollers which are sequentially arranged, and the pole piece coating rolls on the rollers.
3. The lithium battery pole piece drying apparatus according to claim 1 or 2, characterized in that: the regulation and control board is connected with the blast shell through a fixed angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310387512.7A CN116393343B (en) | 2023-04-12 | 2023-04-12 | Lithium battery pole piece drying equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310387512.7A CN116393343B (en) | 2023-04-12 | 2023-04-12 | Lithium battery pole piece drying equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116393343A CN116393343A (en) | 2023-07-07 |
| CN116393343B true CN116393343B (en) | 2023-11-07 |
Family
ID=87007124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310387512.7A Active CN116393343B (en) | 2023-04-12 | 2023-04-12 | Lithium battery pole piece drying equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116393343B (en) |
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|---|---|---|---|---|
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| Publication number | Publication date |
|---|---|
| CN116393343A (en) | 2023-07-07 |
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