CN1270393C - Method for processnig column type stainless steel lithium cell outer case - Google Patents
Method for processnig column type stainless steel lithium cell outer case Download PDFInfo
- Publication number
- CN1270393C CN1270393C CNB2004100514834A CN200410051483A CN1270393C CN 1270393 C CN1270393 C CN 1270393C CN B2004100514834 A CNB2004100514834 A CN B2004100514834A CN 200410051483 A CN200410051483 A CN 200410051483A CN 1270393 C CN1270393 C CN 1270393C
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- stainless steel
- outer shell
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- annealing
- minutes
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- 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
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- Sealing Battery Cases Or Jackets (AREA)
Abstract
The present invention relates to a method for processing a cylindrical stainless steel outer shell of a lithium battery, which comprises: A, a stainless steel outer shell formed by stamping and stretching is annealed and reduced under the protection of reducing atmosphere, wherein an annealing temperature is from 950 to 1150 DEG C, a gas flow rate is from 0.9 to 1.5M<3>/H, and annealing time is from 8 to 11 minutes; B, a temperature of the outer shell is cooled to a room temperature, and cooling time is from 16 to 19 minutes; C, a finished product is obtained by ironing, shaping and cleaning. The present invention adopts gas to protect high temperature anneal. When stress is eliminated, the surface of the outer shell can not be oxidized, and the natural color of materials can be reduced. Moreover, the cylindrical stainless steel outer shell of the lithium battery obtained by the method of the present invention has the advantages of bright surface, natural color, homogeneous stress and ideal dimension control. Moreover, the present invention is environment friendly and reduces environmental pollution caused by a large amount of pickling.
Description
Technical field
The present invention relates to the method that a kind of cylindrical stainless steel li battery shell is handled.
Background technology
Therefore the cylindrical stainless steel li battery shell needs through annealing in process owing to can produce stress after punching stretch shapes.Traditional processing method be stretch once, annealing and pickling once, and to that is to say that generally each shell will can get finished product through four annealing and pickling operations through four stretch process.Thus, the stainless steel casing finished product causes the piece surface oxide layer to come off because of annealing and pickling repeatedly easily, and overpickling also can cause its blemish comparatively serious, needs remedy by the sanding and polishing operation, also the therefore size of difficult control part; And a large amount of pickle liquors can pollute environment.
Summary of the invention
The objective of the invention is at the problems referred to above, a kind of new cylindrical stainless steel li battery shell processing method is provided, to remedy the weak point of existing processing method.
For achieving the above object; technical scheme of the present invention is as follows: cylindrical stainless steel li battery shell processing method; form by following steps: A, will under protection of reducing atmosphere, carry out high annealing through the stainless steel casing that punching stretch is shaped and reduction is handled; annealing temperature is 950～1150 ℃, and gas flow is 0.9～1.5M
3/ H, annealing time are 8～11 minutes; B, be cooled to room temperature, be 16～19 minutes cooling time; C, ironing, shaping, clean finished product.
Above-mentioned reducing atmosphere can adopt hydrogen reducing atmosphere, or ammonia decomposition-reduction atmosphere.
The present invention adopts continous way brightness heat treatment resistance furnace to finish the A step.
The present invention adopts the Buchholz protection high annealing, and case surface can oxidation when eliminating stress, and can the reducing material true qualities; And the cylindrical stainless steel li battery shell that adopts the inventive method to obtain, its surface-brightening, the color and luster nature, stress is even, the size Control ideal; Environmental protection of the present invention has in addition reduced the environmental pollution that causes because of a large amount of pickling.
Embodiment
After the SUS 304 stainless steel materials punching stretch of employing 0.25～0.5mm thickness become the cylindricality li battery shell; under ammonia decomposition-reduction atmosphere protection, it is carried out high annealing, reduction processing through continous way brightness heat treatment resistance furnace; annealing temperature is 950～1150 ℃, and gas flow is 0.9～1.5M
3/ H, annealing time are 8～11 minutes; Rapidly it is inserted in the cooling jacket then it is reduced to room temperature, to eliminate stress that produces and the true qualities of reducing its stainless steel material after punching stretch processing, be 16～19 minutes cooling time; At last with stainless steel casing through conventional ironing, shaping, matting get final product finished product.
Claims (3)
1, cylindrical stainless steel li battery shell processing method is characterized in that being made up of following steps:
A, will carry out high annealing through the stainless steel casing that punching stretch is shaped and reduction is handled under protection of reducing atmosphere, annealing temperature is 950～1150 ℃, and gas flow is 0.9～1.5M
3/ H, annealing time are 8～11 minutes;
B, be cooled to room temperature, be 16～19 minutes cooling time;
C, ironing, shaping, clean finished product.
2, cylindrical stainless steel li battery shell processing method according to claim 1 is characterized in that: described reducing atmosphere is hydrogen or ammonia decomposition-reduction atmosphere.
3, cylindrical stainless steel li battery shell processing method according to claim 1 is characterized in that: described shell adopts the SUS 304 stainless steel materials punching stretch of 0.25～0.5mm thickness to form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100514834A CN1270393C (en) | 2004-09-15 | 2004-09-15 | Method for processnig column type stainless steel lithium cell outer case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100514834A CN1270393C (en) | 2004-09-15 | 2004-09-15 | Method for processnig column type stainless steel lithium cell outer case |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1588670A CN1588670A (en) | 2005-03-02 |
| CN1270393C true CN1270393C (en) | 2006-08-16 |
Family
ID=34602458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100514834A Expired - Fee Related CN1270393C (en) | 2004-09-15 | 2004-09-15 | Method for processnig column type stainless steel lithium cell outer case |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1270393C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4307503B2 (en) * | 2007-12-21 | 2009-08-05 | パナソニック株式会社 | Battery can, manufacturing method thereof, and battery |
| CN107858488A (en) * | 2017-11-28 | 2018-03-30 | 安徽零度新能源科技有限公司 | A kind of processing method of lithium battery stainless steel casing |
| CN117680551A (en) * | 2023-12-11 | 2024-03-12 | 东莞市创明电池技术有限公司 | Manufacturing process of cylindrical steel shell and application of cylindrical steel shell |
-
2004
- 2004-09-15 CN CNB2004100514834A patent/CN1270393C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1588670A (en) | 2005-03-02 |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |