CN113369264A - Cleaning method for lithium battery steel shell - Google Patents
Cleaning method for lithium battery steel shell Download PDFInfo
- Publication number
- CN113369264A CN113369264A CN202110636960.7A CN202110636960A CN113369264A CN 113369264 A CN113369264 A CN 113369264A CN 202110636960 A CN202110636960 A CN 202110636960A CN 113369264 A CN113369264 A CN 113369264A
- Authority
- CN
- China
- Prior art keywords
- steel shell
- cleaning
- lithium battery
- modified alcohol
- oil
- 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.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 55
- 239000010959 steel Substances 0.000 title claims abstract description 55
- 238000004140 cleaning Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 27
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 15
- 150000001298 alcohols Chemical class 0.000 claims abstract description 16
- 238000005406 washing Methods 0.000 claims abstract description 14
- 239000012459 cleaning agent Substances 0.000 claims abstract description 12
- 238000001035 drying Methods 0.000 claims abstract description 10
- 230000003068 static effect Effects 0.000 claims description 8
- 238000001291 vacuum drying Methods 0.000 claims description 6
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 238000010407 vacuum cleaning Methods 0.000 claims description 3
- 239000004215 Carbon black (E152) Substances 0.000 abstract description 8
- 229930195733 hydrocarbon Natural products 0.000 abstract description 8
- 150000002430 hydrocarbons Chemical class 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 3
- 239000012535 impurity Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000012797 qualification Methods 0.000 abstract description 2
- 238000005202 decontamination Methods 0.000 description 2
- 230000003588 decontaminative effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/08—Cleaning containers, e.g. tanks
- B08B9/093—Cleaning containers, e.g. tanks by the force of jets or sprays
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
- C23G5/02—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents
- C23G5/032—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents containing oxygen-containing compounds
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
- H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
- H01M50/222—Inorganic material
- H01M50/224—Metals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/691—Arrangements or processes for draining liquids from casings; Cleaning battery or cell casings
-
- 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
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
The invention discloses a cleaning method of a lithium battery steel shell, which mainly comprises the steps of cleaning and deoiling by a modified alcohol cleaning agent at one time, washing the outer bottom and the inner bottom of the steel shell at a high speed, and drying the washed steel shell. The invention optimizes the hydrocarbon three-step cleaning and oil removal, not only can obtain better cleaning and oil removal effects, but also simplifies the working procedures, greatly shortens the CT time and obviously improves the production efficiency. The high-speed washing process is adopted, the inner bottom black circle printing dirt and the outer bottom yellow spot are efficiently removed, the appearance of the steel shell is cleaner, and the qualification rate is remarkably improved. All the working procedures in the method are in a vacuum environment, so that impurity pollution is avoided, and harmful gas volatilization is avoided.
Description
Technical Field
The invention belongs to the technical field of cleaning of battery steel shells, and particularly relates to a cleaning method of a lithium battery steel shell.
Background
The existing lithium battery is wrapped with a cylindrical steel shell outside a battery inner core, and the battery steel shell needs to be cleaned before use. In the prior art, a hydrocarbon cleaning agent is generally adopted, and drying is carried out after hydrocarbon rough washing for removing oil (100-200 s), hydrocarbon fine washing for removing oil (100-200 s) and hydrocarbon bath washing (150-200 s). And yellow spot-shaped stains on the outer bottom of the steel shell and black circle stains on the inner bottom are common stubborn problems in the field, and the existing cleaning technology is difficult to clean and affects subsequent use.
Disclosure of Invention
The invention aims to overcome the defects, and provides the method for cleaning the steel shell of the lithium battery, which has the advantages of good cleaning effect, simple process and high efficiency, can remove stubborn stains on the inner bottom and the outer bottom of the steel shell, and improves the product percent of pass.
In order to realize the purpose, the invention is realized by the following technical scheme:
a cleaning method of a lithium battery steel shell mainly comprises the following steps:
placing the steel shell in a vacuum cleaning chamber, cleaning and removing oil by using a modified alcohol cleaning agent, wherein the steel shell rotates clockwise in the cleaning process;
placing the opening part of the steel shell upwards and keeping the steel shell static, adopting a modified alcohol cleaning agent to reversely flush the opening part of the steel shell, placing the bottom part of the steel shell upwards and keeping the steel shell static, adopting the modified alcohol cleaning agent to flush the bottom part of the steel shell, wherein the flushing speed is 38-60 m3/h；
And drying the washed steel shell.
Preferably, the cleaning and oil removing time of the modified alcohol is 150-300 s, and compared with the existing three-step hydrocarbon cleaning method, the cleaning and oil removing time is greatly shortened.
Preferably, the temperature for cleaning and removing the oil by the modified alcohol is 80-90 ℃, the vacuum degree is 80-85 Kpa, and the oil stain removing capability is strongest under the condition.
Preferably, the static washing time of the steel shell is 50-60 s, so that the cleaning agent can be used for washing at a high speed in a targeted manner, and stubborn dirt can be effectively removed.
Preferably, the static washing temperature of the steel shell is 90-100 ℃, so that the decontamination capability is enhanced on one hand, and a foundation can be provided for the next drying procedure on the other hand.
Preferably, the drying treatment adopts a vacuum drying mode, the vacuum degree of the vacuum drying is 100Kpa, and the temperature is 90-100 ℃.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention optimizes the hydrocarbon three-step cleaning and oil removal, not only can obtain better cleaning and oil removal effects, but also simplifies the working procedures, greatly shortens the CT time and obviously improves the production efficiency.
(2) The invention adopts a high-speed washing process, efficiently removes the inner bottom black circle printing dirt and the outer bottom yellow spot-shaped dirt, so that the appearance of the steel shell is cleaner, and the qualification rate is obviously improved.
(3) All the working procedures in the method are in a vacuum environment, so that impurity pollution is avoided, and harmful gas volatilization is avoided.
Drawings
FIG. 1 is a flow chart of the cleaning method of the present invention.
FIG. 2 is a schematic diagram of the state of the steel shell in the oil cleaning stage.
Fig. 3 is a schematic view of the state of the steel shell in the flushing stage according to the invention.
Detailed Description
Preferred embodiments of the present invention will be described in more detail with reference to specific examples.
Examples
A cleaning method of a lithium battery steel shell mainly comprises the following steps:
placing the steel shell in a vacuum cleaning chamber, cleaning and removing oil by using a modified alcohol cleaning agent, wherein the steel shell rotates clockwise in the cleaning process;
placing the opening of the steel shell upwards and standing, adopting a modified alcohol cleaning agent to reversely flush the opening of the steel shell, placing the bottom of the steel shell upwards and standing, and adopting the modified alcohol cleaning agentWashing the bottom of the steel shell at a speed of 38-60 m3/h；
And drying the washed steel shell.
In the embodiment, the cleaning and oil removing time of the modified alcohol is 150-300 s, the cleaning and oil removing temperature of the modified alcohol is 80-90 ℃, the vacuum degree is 80-85 Kpa, the oil stain removing capability is strongest under the condition, and the cleaning and oil removing time is greatly shortened compared with that of the existing hydrocarbon three-step cleaning method.
According to the embodiment, the static washing time of the steel shell is 50-60 s, so that the cleaning agent can be used for washing at a high speed in a targeted manner, and stubborn dirt can be effectively removed; the washing temperature is 90-100 ℃, so that the decontamination capability is enhanced on one hand, and a foundation can be provided for the next drying procedure on the other hand.
In this embodiment, the drying process adopts a vacuum drying mode, the vacuum degree of the vacuum drying is 100Kpa, and the temperature is 90-100 ℃.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and technical principles of the described embodiments, and such modifications and variations should also be considered as within the scope of the present invention.
Claims (7)
1. A cleaning method of a lithium battery steel shell is characterized by comprising the following steps:
placing the steel shell in a vacuum cleaning chamber, cleaning and removing oil by using a modified alcohol cleaning agent, wherein the steel shell rotates clockwise in the cleaning process;
placing the opening part of the steel shell upwards and keeping the steel shell static, adopting a modified alcohol cleaning agent to reversely flush the opening part of the steel shell, placing the bottom part of the steel shell upwards and keeping the steel shell static, adopting the modified alcohol cleaning agent to flush the bottom part of the steel shell, wherein the flushing speed is 38-60 m3/h；
And drying the washed steel shell.
2. The method for cleaning the steel shell of the lithium battery as recited in claim 1, wherein the time for cleaning and removing the oil with the modified alcohol is 150-300 s.
3. The method for cleaning the steel shell of the lithium battery as claimed in claim 1, wherein the temperature for cleaning and removing the oil by the modified alcohol is 80-90 ℃ and the vacuum degree is 80-85 Kpa.
4. The method for cleaning the steel shell of the lithium battery as recited in claim 1, wherein the static washing time of the steel shell is 50-60 s.
5. The method for cleaning the steel shell of the lithium battery as recited in claim 1, wherein the temperature for statically washing the steel shell is 90-100 ℃.
6. The method for cleaning the steel shell of the lithium battery as recited in claim 1, wherein the drying process is performed in a vacuum drying manner.
7. The cleaning method for the steel shell of the lithium battery as claimed in claim 6, wherein the vacuum degree of the vacuum drying is 100Kpa, and the temperature is 90-100 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110636960.7A CN113369264A (en) | 2021-06-08 | 2021-06-08 | Cleaning method for lithium battery steel shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110636960.7A CN113369264A (en) | 2021-06-08 | 2021-06-08 | Cleaning method for lithium battery steel shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113369264A true CN113369264A (en) | 2021-09-10 |
Family
ID=77576589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110636960.7A Pending CN113369264A (en) | 2021-06-08 | 2021-06-08 | Cleaning method for lithium battery steel shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113369264A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050252526A1 (en) * | 2004-05-12 | 2005-11-17 | Sony Corporation | Single wafer cleaning apparatus and cleaning method thereof |
| CN102580951A (en) * | 2012-03-02 | 2012-07-18 | 山东常林机械集团股份有限公司 | Cleaning process of hydraulic parts |
| CN209139317U (en) * | 2018-10-25 | 2019-07-23 | 苏州市洁力美工业设备有限公司 | A kind of improved cleaning rust-cleaning integrating machine |
-
2021
- 2021-06-08 CN CN202110636960.7A patent/CN113369264A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050252526A1 (en) * | 2004-05-12 | 2005-11-17 | Sony Corporation | Single wafer cleaning apparatus and cleaning method thereof |
| CN102580951A (en) * | 2012-03-02 | 2012-07-18 | 山东常林机械集团股份有限公司 | Cleaning process of hydraulic parts |
| CN209139317U (en) * | 2018-10-25 | 2019-07-23 | 苏州市洁力美工业设备有限公司 | A kind of improved cleaning rust-cleaning integrating machine |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210910 |