CN101838805B - Rust-proof treatment method of lithium battery steel shell - Google Patents
Rust-proof treatment method of lithium battery steel shell Download PDFInfo
- Publication number
- CN101838805B CN101838805B CN2010101819483A CN201010181948A CN101838805B CN 101838805 B CN101838805 B CN 101838805B CN 2010101819483 A CN2010101819483 A CN 2010101819483A CN 201010181948 A CN201010181948 A CN 201010181948A CN 101838805 B CN101838805 B CN 101838805B
- Authority
- CN
- China
- Prior art keywords
- battery
- steel shell
- cleaning
- water
- rust
- 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.)
- Expired - Fee Related
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 16
- 239000010959 steel Substances 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 12
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title abstract description 5
- 229910052744 lithium Inorganic materials 0.000 title abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000004140 cleaning Methods 0.000 claims abstract description 14
- 238000002161 passivation Methods 0.000 claims abstract description 14
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000003085 diluting agent Substances 0.000 claims abstract description 5
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 4
- TVXXNOYZHKPKGW-UHFFFAOYSA-N sodium molybdate (anhydrous) Chemical compound [Na+].[Na+].[O-][Mo]([O-])(=O)=O TVXXNOYZHKPKGW-UHFFFAOYSA-N 0.000 claims abstract description 4
- XMVONEAAOPAGAO-UHFFFAOYSA-N sodium tungstate Chemical compound [Na+].[Na+].[O-][W]([O-])(=O)=O XMVONEAAOPAGAO-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000000243 solution Substances 0.000 claims description 6
- 239000008151 electrolyte solution Substances 0.000 claims description 5
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 4
- 229910001416 lithium ion Inorganic materials 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract 2
- 238000007605 air drying Methods 0.000 abstract 1
- 239000003792 electrolyte Substances 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 abstract 1
- 235000015393 sodium molybdate Nutrition 0.000 abstract 1
- 239000011684 sodium molybdate Substances 0.000 abstract 1
- 238000005096 rolling process Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000007772 electroless plating Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009413 insulation 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
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention discloses a rust-proof treatment method of a lithium battery steel shell, comprising the following steps: cleaning residual electrolyte on the battery surface with clean water; immersing cleaned battery in passivated diluent for 1-1.5min, taking out and cleaning the batter by cleaning water after forming a layer of passivation protective film on the surface of the battery steel shell; and immersing the battery in alcohol, cleaning and air-drying. The passivation liquid is prepared from the following components by weight percent: 1-3% of sodium tungstate, 1-3% of sodium molybdate, 5-9% of phosphoric acid and the balance of water, and when in use, the passivation liquid and water are further diluted according to the volume ratio of 1:5-7. The invention has the advantages of greatly improving rust-proof effect on the battery steel shell, prolonging the service life of the battery steel shell and increasing the battery production efficiency by large-scale rust-proof treatment on the battery steel shell.
Description
Technical field
The invention belongs to the technical field that lithium ion battery is produced, relate in particular to the antirusting treating method of a kind of li battery shell behind slot rolling.
Background technology
Existing lithium battery structure mainly includes columniform box hat, be arranged on the battery inner core in the box hat, the battery inner core comprises positive pole, the negative pole of battery and is arranged on insulation diaphragm between the positive and negative electrode, and the lug that is connected with positive and negative electrode respectively, the anodal lug links to each other with block, the lug of negative pole links to each other with box hat, the top of box hat is provided with an explosion-proof combined block, explosion-proof combined block is fixedly installed in the groove at box hat top by the slot rolling operation, play the electrolytic solution that prevents inside battery and flow out, and the stationary battery inner core.The box hat of battery generally all passes through coating and handles, and is used to prevent box hat outside surface generation corrosion.Because battery steel shell must be through slot rolling processing when explosion-proof combined block is installed, therefore very easily the coating on box hat surface is destroyed, thereby influence the rust-proof effect of box hat, and then influence the work-ing life of battery.The antirusting treating method that adopts mainly is to be coated with one deck slushing oil at the box hat outside surface of being crossed by slot rolling at present.But this treatment process rust-proof effect is poor, and work-ing life is short, and production efficiency is low.
Summary of the invention
The object of the present invention is to provide and a kind ofly can effectively improve battery steel shell outside surface rust-proof effect, and handle the antirusting treating method of lithium battery steel shell easily.
For realizing purpose of the present invention, a kind of antirusting treating method of lithium ion battery box hat comprises with the residual electrolytic solution of clear water with battery surface cleaning up; Battery after cleaning was immersed in the passivation diluent 1 minute to 1 minute and 30 seconds, treat that the surface of battery steel shell forms one deck passivation protection film, battery is taken out clean up with clear water once more; At last battery is immersed in the alcohol and dry up after the cleaning; Aforesaid preparation of passivation solution adopts: sodium wolframate 1-3% weight ratio; Sodium orthomolybdate 1-3%; Phosphoric acid 5-9%; All the other are water, during use with this passivating solution and water are by volume again 1 further to dilute than the ratio of 5-7.
Advantage of the present invention is: carry out large-scale antirust processing by the box hat to battery, can obviously improve the battery steel shell rust-proof effect, prolong its long service life, and can improve the production efficiency of battery.
Embodiment
A kind of antirusting treating method of lithium ion battery box hat comprises with the residual electrolytic solution of clear water with battery surface cleaning up; Battery after cleaning was immersed in the passivation diluent 1 minute to 1 minute and 30 seconds, treat that the surface of battery steel shell forms one deck passivation protection film, battery is taken out clean up with clear water once more; At last battery is immersed in the alcohol and dry up after the cleaning; Aforesaid preparation of passivation solution adopts: sodium wolframate 1-3% weight ratio; Sodium orthomolybdate 1-3%; Phosphoric acid 5-9%; All the other are water, during use with this passivating solution and water are by volume again 1 further to dilute than the ratio of 5-7.
Concrete principle is: adopt the method for electroless plating, form the passivation protection film on the surface of battery steel shell by reaction, reduce the possibility that notch gets rusty.
Concrete technological process: for
Battery steel shell is clean with flushing with clean water, wash away the residual electrolytic solution on box hat surface.
Battery after cleaning is immersed taking-up after 1-1.5 minute in the passivation diluent.
Go out battery about 2 minutes, embathe about 2 minutes with running water again with a large amount of flushing with clean water.
Battery is immersed back taking-up about 30 seconds in the alcohol, disperse to be positioned on the clean dried cloth, dry up with exhaust fan.
Claims (1)
1. the antirusting treating method of a lithium ion battery box hat comprises with the residual electrolytic solution of clear water with battery surface cleaning up; Battery after cleaning was immersed in the passivation diluent 1 minute to 1 minute and 30 seconds, treat that the surface of battery steel shell forms one deck passivation protection film, battery is taken out clean up with clear water once more; At last battery is immersed in the alcohol and dry up after the cleaning; Aforesaid preparation of passivation solution adopts: sodium wolframate 1-3% weight ratio, and Sodium orthomolybdate 1-3%, phosphoric acid 5-9%, all the other are water, during use with this passivating solution and water are by volume again 1 further to dilute than the ratio of 5-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101819483A CN101838805B (en) | 2010-05-25 | 2010-05-25 | Rust-proof treatment method of lithium battery steel shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101819483A CN101838805B (en) | 2010-05-25 | 2010-05-25 | Rust-proof treatment method of lithium battery steel shell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101838805A CN101838805A (en) | 2010-09-22 |
| CN101838805B true CN101838805B (en) | 2011-10-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101819483A Expired - Fee Related CN101838805B (en) | 2010-05-25 | 2010-05-25 | Rust-proof treatment method of lithium battery steel shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101838805B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105618413A (en) * | 2016-01-25 | 2016-06-01 | 浙江钱江锂电科技有限公司 | Cleaning technique for surface of metal-cased cell |
| CN107858674A (en) * | 2017-11-14 | 2018-03-30 | 蚌埠市嘉实机电设备制造有限公司 | A kind of inorganic acid passivating solution |
| CN108048828A (en) * | 2017-12-08 | 2018-05-18 | 马鞍山合力仪表有限责任公司 | A kind of surface treatment method of stress metal watch shell |
| CN109668958A (en) * | 2018-12-10 | 2019-04-23 | 江苏天鹏电源有限公司 | Wall coating detection method in a kind of li battery shell |
| WO2021046719A1 (en) * | 2019-09-10 | 2021-03-18 | 深圳先进技术研究院 | Method for preparing secondary battery |
| CN111748809A (en) * | 2020-07-07 | 2020-10-09 | 天科新能源有限责任公司 | Passivator for preventing surface of steel shell of lithium battery from rusting and application method thereof |
| CN114094247A (en) * | 2021-09-30 | 2022-02-25 | 陕西蓝湾进平新能源有限公司 | Process method for improving salt mist resistance of electroplated steel shell lithium battery |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1213410A (en) * | 1996-02-05 | 1999-04-07 | 新日本制铁株式会社 | Corrosion-resistant surface-treated metal material and surface treatment agent thereof |
| CN1234455A (en) * | 1998-03-18 | 1999-11-10 | 株式会社日立制作所 | Magnesium alloy structural member and use |
| US6582530B1 (en) * | 2002-09-05 | 2003-06-24 | United Technologies Corporation | Non-chromate protective coating for iron and iron alloys and coating solution |
| CN101587943A (en) * | 2009-06-25 | 2009-11-25 | 彩虹集团电子股份有限公司 | Battery-shell surface rust prevention method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100585004C (en) * | 2008-02-28 | 2010-01-27 | 武汉钢铁(集团)公司 | The chromium-free passivation liquid that is used for galvanized steel sheet surface |
| CN201247785Y (en) * | 2008-07-25 | 2009-05-27 | 雷天电池技术有限公司 | Composite structure lithium ion battery shell |
| CN100594263C (en) * | 2008-11-21 | 2010-03-17 | 常熟华冶薄板有限公司 | chromium-less passivation liquid used for continuous hot dip of galvanized sheet steel |
-
2010
- 2010-05-25 CN CN2010101819483A patent/CN101838805B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1213410A (en) * | 1996-02-05 | 1999-04-07 | 新日本制铁株式会社 | Corrosion-resistant surface-treated metal material and surface treatment agent thereof |
| CN1234455A (en) * | 1998-03-18 | 1999-11-10 | 株式会社日立制作所 | Magnesium alloy structural member and use |
| US6582530B1 (en) * | 2002-09-05 | 2003-06-24 | United Technologies Corporation | Non-chromate protective coating for iron and iron alloys and coating solution |
| CN101587943A (en) * | 2009-06-25 | 2009-11-25 | 彩虹集团电子股份有限公司 | Battery-shell surface rust prevention method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101838805A (en) | 2010-09-22 |
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Granted publication date: 20111019 Termination date: 20170525 |