CN106636775A - Aluminum alloy strip used for powder battery shell and preparation method of aluminum alloy strip - Google Patents
Aluminum alloy strip used for powder battery shell and preparation method of aluminum alloy strip Download PDFInfo
- Publication number
- CN106636775A CN106636775A CN201611180263.0A CN201611180263A CN106636775A CN 106636775 A CN106636775 A CN 106636775A CN 201611180263 A CN201611180263 A CN 201611180263A CN 106636775 A CN106636775 A CN 106636775A
- Authority
- CN
- China
- Prior art keywords
- aluminium alloy
- aluminum alloy
- alloy strip
- alloy strips
- electrokinetic cell
- 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.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
-
- 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
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/116—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material
-
- 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
Abstract
The invention belongs to the field of aluminum alloy strip manufacturing, and particularly relates to an aluminum alloy strip used for a power battery shell and a preparation method of the aluminum alloy strip. The aluminum alloy strip is composed of, by weight, 0.2-0.3% of Si, 0.4-0.6% of Fe, 0.06-0.12% of Cu, 1.05-1.15% of Mn, smaller than 0.05% of Mg, 0.01-0.03% of Ti, and the balance Al, wherein the ration of Fe to Si is 2-3. Conversion from an Al6(Fe,Mn) phase to an alpha-Al(Fe,Mn)Si phase is controlled through chemical component optimization design and homogenization heat treatment, diffusate can be conveniently separated out through a certain temperature fall rate, and meanwhile, a compound is crushed and refined by increasing the machining rates of all passes of hot rolling and total passes; and excellent matching of material strength, plasticity and deep drawability is finally achieved, and the preparation method is economical and easy to popularize.
Description
Technical field
The invention belongs to the preparation field of aluminium alloy strips, and in particular to a kind of electrokinetic cell shell aluminium alloy strips and its
Preparation method.
Background technology
The punching process deflection of electrokinetic cell shell is big, punching passage is more, production process is complicated, the combination property to material
Particularly deep drawability, laser weldability propose very high request, do not require nothing more than material and have little thickness deviation, good
Surface quality, while also needing to the low and excellent laser weldability of good plasticity, little yield tensile ratio, earing rate to protect
Security during demonstrate,proving battery under arms.At present to there is poor deep drawability, earing rate height and laser welding bad etc. for the material
Defect.
The present invention carries out optimizing components design to aluminium alloy strips, based on the control of the aspects such as texture, compound and crystal grain
Technical research processed, realizes the good fitting of the strength of materials, plasticity and deep drawability so that the aluminium alloy strips can meet well
Deep drawability, can realize good laser welding with cover plate again, be preparation method that is a kind of not only economic but also easily promoting.
By homogenizing Heat Treatment Control Al6The transformation of (Fe, Mn) opposite α-Al (Fe, Mn) Si phases, and necessarily to lower the temperature
The precipitation of speed control dispersion so that tissue is separated out fully, is evenly distributed；Increase the processing of each passage of hot rolling and total passage
Rate, is conducive to the broken of compound；By hot rolling finishing temperature and thickness, cold processing ratio, finished products technology controlling and process, make
Obtain material cubic texture to be balanced with deformation texture.The good fitting of the strength of materials, plasticity and deep drawability is finally realized, is made
Obtaining the aluminium alloy strips can meet good deep drawability, can realize good laser welding with cover plate again, be a kind of both Jing
The preparation method that Ji is easily promoted again.
The content of the invention
Present invention aims to the existing material is present, deep drawability is poor, earing rate is high and laser welding is bad etc.
A kind of defect, there is provided electrokinetic cell shell aluminium alloy strips and preparation method thereof.Aluminium alloy strips obtained by the present invention can
Meet good deep drawability, can realize good laser welding with cover plate again, be preparation that is a kind of not only economic but also easily promoting
Method.
To realize the purpose of the present invention, adopt the following technical scheme that：
A kind of electrokinetic cell shell aluminium alloy strips, its constituent is：0.2 ~ 0.3wt% of Si, Fe 0.4 ~ 0.6wt%, Cu
1.05 ~ 1.15wt% of 0.06 ~ 0.12wt%, Mn, Mg ＜ 0.05wt%, 0.01 ~ 0.03wt% of Ti, Fe/Si=2 ~ 3, balance of Al.
A kind of method for preparing electrokinetic cell shell aluminium alloy strips as above, concretely comprises the following steps：
（1）By the composition of aluminium alloy strips, by aluminium alloy stock is smelting, refining, degasification is later half is continuously cast into for online slagging-off
Aluminium alloy flat bloom；
（2）Slab ingot jagsaw is cut, behind milling face, 580 ~ 620 DEG C and the homogenization heat treatment for being incubated 4 ~ 10 hours are carried out, then with 20
DEG C/h speed be cooled to 510 DEG C of hot rolling start rolling temperature；
（3）Then come out of the stove hot rolling, 3.0 ~ 8.0mm of hot rolled thickness, 320 ~ 360 DEG C of hot rolling finishing temperature；
（4）Hot rolled plate is rolled to into finished product thickness on cold-rolling mill, while ensureing more than cold processing ratio >=65%；
（5）By Jing steps（4）The material of process is cleaned, aligning, trimming；
（6）By Jing steps（5）Band after process is placed on annealing furnace and carries out finished products, 340 ~ 400 DEG C of annealing temperature, during insulation
Between according to volume weight depending on, be finally made a kind of electrokinetic cell shell aluminium alloy strips.
The present invention has compared with the prior art advantages below：
1）The tensile strength of the aluminium alloy strips obtained by the present invention reaches 100 ~ 120MPa, and yield strength reaches 40 ~ 60MPa,
Earing rate ＜ 3%；Good deep drawability can be met, good laser welding can be realized with cover plate again；
2）The present invention carries out optimizing components design on the basis of 3003 alloys to aluminium alloy strips, by controlling Fe/Si ratios
With homogenization Heat Treatment Control Al6The transformation of (Fe, Mn) opposite α-Al (Fe, Mn) Si phases, and controlled more with certain rate of temperature fall
The precipitation of scattered thing so that tissue is separated out fully, is evenly distributed；Increase the working modulus of each passage of hot rolling and total passage, being conducive to
Compound it is broken；By hot rolling finishing temperature and thickness, cold processing ratio, finished products technology controlling and process so that cubic texture
It is balanced with deformation texture.Finally realize the good fitting of the strength of materials, plasticity and deep drawability so that the aluminium alloy strips
Good deep drawability can be met, good laser welding can be realized with cover plate again, be a kind of not only economical but also easily popularization
Preparation method.
The preparation method of traditional aluminium alloy strips, is first annealing trimming of carry out afterwards, and so trimming is held after the annealing of O states
Easy alice, trimming quality is bad.And the present invention is using first cleaning, aligning, trimming after cold rolling, after annealing, the technological operation is avoided
Trimming quality bad problem.
Specific embodiment
For the further open rather than restriction present invention, below in conjunction with example, the present invention is described in further detail.
Embodiment 1
A kind of electrokinetic cell shell aluminium alloy strips, its constituent is：Si 0.2wt%, Fe 0.4wt%, Cu 0.06wt%, Mn
1.05wt%, Mg 0.02wt%, Ti 0.01wt%, Fe/Si=2, balance of Al.
A kind of method for preparing electrokinetic cell shell aluminium alloy strips as above, concretely comprises the following steps：
（1）By the composition of aluminium alloy strips, by aluminium alloy stock is smelting, refining, degasification is later half is continuously cast into for online slagging-off
Aluminium alloy flat bloom；
（2）Slab ingot jagsaw is cut, behind milling face, 580 DEG C and the homogenization heat treatment for being incubated 4 hours are carried out, then with 20 DEG C/h
Speed is cooled to 510 DEG C of hot rolling start rolling temperature；
（3）Then come out of the stove hot rolling, hot rolled thickness 3.0mm, 320 DEG C of hot rolling finishing temperature；
（4）Hot rolled plate is rolled to into finished product thickness 1.0mm on cold-rolling mill；
（5）By Jing steps（4）The material of process is cleaned, aligning, trimming；
（6）By Jing steps（5）Band after process is placed on annealing furnace and carries out finished products, 340 DEG C of annealing temperature, temperature retention time root
Depending on according to volume weight, a kind of electrokinetic cell shell aluminium alloy strips are finally made.
The tensile strength of aluminium alloy strips obtained in Jing the method is 100MPa, and yield strength reaches 60MPa, and earing rate is
2.5%。
Embodiment 2
A kind of electrokinetic cell shell aluminium alloy strips, its constituent is：Si 0.2wt%, Fe 0.5wt%, Cu 0.10wt%, Mn
1.10wt%, Mg 0.04wt%, Ti 0.02wt%, Fe/Si=2.5, balance of Al.
A kind of method for preparing electrokinetic cell shell aluminium alloy strips as above, concretely comprises the following steps：
（1）By the composition of aluminium alloy strips, by aluminium alloy stock is smelting, refining, degasification is later half is continuously cast into for online slagging-off
Aluminium alloy flat bloom；
（2）Slab ingot jagsaw is cut, behind milling face, 600 DEG C and the homogenization heat treatment for being incubated 8 hours are carried out, then with 20 DEG C/h
Speed is cooled to 510 DEG C of hot rolling start rolling temperature；
（3）Then come out of the stove hot rolling, hot rolled thickness 5.0mm, 340 DEG C of hot rolling finishing temperature；
（4）Hot rolled plate is rolled to into finished product thickness 1.5mm on cold-rolling mill；
（5）By Jing steps（4）The material of process is cleaned, aligning, trimming；
（6）By Jing steps（5）Band after process is placed on annealing furnace and carries out finished products, 380 DEG C of annealing temperature, temperature retention time root
Depending on according to volume weight, a kind of electrokinetic cell shell aluminium alloy strips are finally made.
The tensile strength of aluminium alloy strips obtained in Jing the method is 110MPa, and yield strength reaches 50MPa, and earing rate is
1.5%。
Embodiment 3
A kind of electrokinetic cell shell aluminium alloy strips, its constituent is：Si 0.2wt%, Fe 0.6wt%, Cu 0.12wt%, Mn
1.15wt%, Mg 0.01wt%, Ti 0.03wt%, Fe/Si=3, balance of Al.
A kind of method for preparing electrokinetic cell shell aluminium alloy strips as above, concretely comprises the following steps：
（1）By the composition of aluminium alloy strips, by aluminium alloy stock is smelting, refining, degasification is later half is continuously cast into for online slagging-off
Aluminium alloy flat bloom；
（2）Slab ingot jagsaw is cut, behind milling face, 620 DEG C and the homogenization heat treatment for being incubated 10 hours are carried out, then with 20 DEG C/h
Speed be cooled to 510 DEG C of hot rolling start rolling temperature；
（3）Then come out of the stove hot rolling, hot rolled thickness 8.0mm, 360 DEG C of hot rolling finishing temperature；
（4）Hot rolled plate is rolled to into finished product thickness 2.0mm on cold-rolling mill；
（5）By Jing steps（4）The material of process is cleaned, aligning, trimming；
（6）By Jing steps（5）Band after process is placed on annealing furnace and carries out finished products, 400 DEG C of annealing temperature, temperature retention time root
Depending on according to volume weight, a kind of electrokinetic cell shell aluminium alloy strips are finally made.
The tensile strength of aluminium alloy strips obtained in Jing the method is 120MPa, and yield strength reaches 40MPa, and earing rate is
1.0%。
The foregoing is only presently preferred embodiments of the present invention, all impartial changes done according to scope of the present invention patent with
Modification, should all belong to the covering scope of the present invention.
Claims (2)
1. a kind of electrokinetic cell shell aluminium alloy strips, it is characterised in that：Its constituent is：0.2 ~ 0.3wt% of Si, Fe 0.4
1.05 ~ 1.15wt% of 0.06 ~ 0.12wt% of ~ 0.6wt%, Cu, Mn, Mg ＜ 0.05wt%, 0.01 ~ 0.03wt% of Ti, Fe/Si=2 ~
3, balance of Al.
2. a kind of method for preparing electrokinetic cell shell aluminium alloy strips as claimed in claim 1, it is characterised in that：Concrete step
Suddenly it is：
（1）By the composition of aluminium alloy strips, by aluminium alloy stock is smelting, refining, degasification is later half is continuously cast into for online slagging-off
Aluminium alloy flat bloom；
（2）Slab ingot jagsaw is cut, behind milling face, 580 ~ 620 DEG C and the homogenization heat treatment for being incubated 4 ~ 10 hours are carried out, then with 20
DEG C/h speed be cooled to 510 DEG C of hot rolling start rolling temperature；
（3）Then come out of the stove hot rolling, 3.0 ~ 8.0mm of hot rolled thickness, 320 ~ 360 DEG C of hot rolling finishing temperature；
（4）Hot rolled plate is rolled to into finished product thickness on cold-rolling mill, while ensureing more than cold processing ratio >=65%；
（5）By Jing steps（4）The material of process is cleaned, aligning, trimming；
（6）By Jing steps（5）Band after process is placed on annealing furnace and carries out finished products, 340 ~ 400 DEG C of annealing temperature, during insulation
Between according to volume weight depending on, be finally made a kind of electrokinetic cell shell aluminium alloy strips.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611180263.0A CN106636775A (en) | 2016-12-20 | 2016-12-20 | Aluminum alloy strip used for powder battery shell and preparation method of aluminum alloy strip |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611180263.0A CN106636775A (en) | 2016-12-20 | 2016-12-20 | Aluminum alloy strip used for powder battery shell and preparation method of aluminum alloy strip |
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| CN106636775A true CN106636775A (en) | 2017-05-10 |
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| CN201611180263.0A Pending CN106636775A (en) | 2016-12-20 | 2016-12-20 | Aluminum alloy strip used for powder battery shell and preparation method of aluminum alloy strip |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107130146A (en) * | 2017-06-07 | 2017-09-05 | 中铝瑞闽股份有限公司 | A kind of capacitor case aluminium alloy strips and preparation method thereof |
| CN107502787A (en) * | 2017-08-15 | 2017-12-22 | 中铝瑞闽股份有限公司 | A kind of new energy battery cover explosion-proof valve aluminium alloy strips and preparation method thereof |
| CN107604212A (en) * | 2017-09-12 | 2018-01-19 | 中铝瑞闽股份有限公司 | Integrated battery cover board aluminium alloy strips and preparation method thereof |
| CN108559878A (en) * | 2018-03-08 | 2018-09-21 | 常州常发制冷科技有限公司 | Battery case aluminum alloy strip and preparation method thereof |
| CN108998701A (en) * | 2018-08-09 | 2018-12-14 | 广西柳州银海铝业股份有限公司 | IH electric cooker lid aluminum alloy base material production method |
| CN109097637A (en) * | 2018-09-10 | 2018-12-28 | 招商局铝业(重庆)有限公司 | The preparation method of one bulb kettle type pot gallbladder aluminum alloy materials |
| CN109097636A (en) * | 2018-09-10 | 2018-12-28 | 招商局铝业(重庆)有限公司 | A kind of baking utensil aluminium alloy and preparation method thereof |
| CN109487132A (en) * | 2018-12-20 | 2019-03-19 | 广西柳州银海铝业股份有限公司 | Power battery shell aluminium alloy strips and its manufacturing method |
| CN110453110A (en) * | 2019-09-03 | 2019-11-15 | 南通恒金复合材料有限公司 | A kind of housing of power cell aluminium alloy strips and preparation method thereof |
| CN111647775A (en) * | 2020-05-08 | 2020-09-11 | 银邦金属复合材料股份有限公司 | New energy power battery case, aluminum alloy and manufacturing method thereof |
| CN114921737A (en) * | 2022-05-12 | 2022-08-19 | 天津忠旺铝业有限公司 | High-efficiency annealing process of aluminum alloy strip for lithium battery of electric vehicle |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107130146A (en) * | 2017-06-07 | 2017-09-05 | 中铝瑞闽股份有限公司 | A kind of capacitor case aluminium alloy strips and preparation method thereof |
| CN107502787A (en) * | 2017-08-15 | 2017-12-22 | 中铝瑞闽股份有限公司 | A kind of new energy battery cover explosion-proof valve aluminium alloy strips and preparation method thereof |
| CN107502787B (en) * | 2017-08-15 | 2019-02-22 | 中铝瑞闽股份有限公司 | A kind of new energy battery cover explosion-proof valve aluminium alloy strips and preparation method thereof |
| CN107604212A (en) * | 2017-09-12 | 2018-01-19 | 中铝瑞闽股份有限公司 | Integrated battery cover board aluminium alloy strips and preparation method thereof |
| CN108559878A (en) * | 2018-03-08 | 2018-09-21 | 常州常发制冷科技有限公司 | Battery case aluminum alloy strip and preparation method thereof |
| CN108998701A (en) * | 2018-08-09 | 2018-12-14 | 广西柳州银海铝业股份有限公司 | IH electric cooker lid aluminum alloy base material production method |
| CN109097637A (en) * | 2018-09-10 | 2018-12-28 | 招商局铝业(重庆)有限公司 | The preparation method of one bulb kettle type pot gallbladder aluminum alloy materials |
| CN109097636A (en) * | 2018-09-10 | 2018-12-28 | 招商局铝业(重庆)有限公司 | A kind of baking utensil aluminium alloy and preparation method thereof |
| CN109487132A (en) * | 2018-12-20 | 2019-03-19 | 广西柳州银海铝业股份有限公司 | Power battery shell aluminium alloy strips and its manufacturing method |
| CN110453110A (en) * | 2019-09-03 | 2019-11-15 | 南通恒金复合材料有限公司 | A kind of housing of power cell aluminium alloy strips and preparation method thereof |
| CN111647775A (en) * | 2020-05-08 | 2020-09-11 | 银邦金属复合材料股份有限公司 | New energy power battery case, aluminum alloy and manufacturing method thereof |
| CN114921737A (en) * | 2022-05-12 | 2022-08-19 | 天津忠旺铝业有限公司 | High-efficiency annealing process of aluminum alloy strip for lithium battery of electric vehicle |
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Application publication date: 20170510 |