CN109487132A - Power battery shell aluminium alloy strips and its manufacturing method - Google Patents
Power battery shell aluminium alloy strips and its manufacturing method Download PDFInfo
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- CN109487132A CN109487132A CN201811564127.0A CN201811564127A CN109487132A CN 109487132 A CN109487132 A CN 109487132A CN 201811564127 A CN201811564127 A CN 201811564127A CN 109487132 A CN109487132 A CN 109487132A
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- aluminium alloy
- temperature
- power battery
- alloy strips
- battery shell
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims abstract description 12
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 10
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 9
- 229910052802 copper Inorganic materials 0.000 claims abstract description 9
- 229910052742 iron Inorganic materials 0.000 claims abstract description 9
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 9
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 9
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 9
- 238000005097 cold rolling Methods 0.000 claims abstract description 7
- 238000005098 hot rolling Methods 0.000 claims abstract description 7
- 238000003801 milling Methods 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims description 12
- 239000004615 ingredient Substances 0.000 claims description 9
- 239000010936 titanium Substances 0.000 claims description 8
- 229910045601 alloy Inorganic materials 0.000 claims description 7
- 239000000956 alloy Substances 0.000 claims description 7
- 238000000265 homogenisation Methods 0.000 claims description 7
- -1 aluminium titanium boron Chemical compound 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000007872 degassing Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 238000004321 preservation Methods 0.000 claims description 6
- 238000007670 refining Methods 0.000 claims description 6
- 238000009966 trimming Methods 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000004080 punching Methods 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 8
- 239000002994 raw material Substances 0.000 abstract description 6
- 229910001334 3003 aluminium alloy Inorganic materials 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000003723 Smelting Methods 0.000 abstract 1
- 238000005266 casting Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 238000005457 optimization Methods 0.000 abstract 1
- 239000011572 manganese Substances 0.000 description 7
- 238000003825 pressing Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
-
- 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
- C22F1/047—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 of alloys with magnesium as the next major constituent
-
- 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
- H01M50/116—Primary casings; Jackets or wrappings 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Conductive Materials (AREA)
Abstract
The present invention discloses a kind of power battery shell aluminium alloy strips and its manufacturing method, technical field of aluminum alloy technology, use raw material for Si 0.50~0.60%, Fe < 0.50%, Cu is 0.20~0.40%, Mn < 0.05%, Mg 1.05~1.20%, Cr 0.15~0.35%, Zn < 0.02%, Ti < 0.05%, surplus is Al, wherein it is divided by according to metal quality percentage, Mg/Si is 1.75-2.40, pass through optimization composition proportion on the basis of 3003 aluminium alloy, control Mg/Si ratio, it is smelting, casting, homogenizing cast ingot, milling face, hot rolling, cold rolling, it is heat-treated with finishing and completes, aluminium alloy strips surface quality of the invention is good, punching performance is excellent, its manufacturer Method is simple, and power battery shell surface strength and hardness significantly improve after punching forming.
Description
Technical field
The present invention relates to technical field of aluminum alloy technology, especially a kind of power battery shell aluminium alloy strips and its manufacturer
Method.
Background technique
Power battery shell requires the square power battery high, especially the country dominates at present to the comprehensive performance of material
Shell belongs to asymmetric punching press, and in asymmetric punching press, deflection is big, flushing technology is complicated and changeable, the rectangular shell of different size
Required punching passage is different.Common 3003 aluminium alloy currently on the market, common state are O, H12, H14 state, at
It point is calculated by mass percentage as, Mn 1.0%~1.5%, Cu 0.05%~0.2%, Fe 0.7%, Si 0.60%, Zn 0.10%,
Surplus is Al, and using above-mentioned original manufactured aluminium alloy strips, tensile strength is substantially in 100-155MPa, although can satisfy
The punching of power battery shell shapes, though its intensity increase is more slow because of the increase of 3003 alloy cold deformations, leads to punching
Intensity and lower hardness after forming, tensile strength are only capable of reaching 150-200MPa, and faucal position easily deforms, and is unfavorable for electricity
Core assembly, can not effectively seal when carrying out cover board welding；On the other hand manganese segregation is serious when 3003 aluminium alloys are cast, at heat
Reason process is easy to appear coarse grains problem, so need to carry out Homogenization Treatments at high temperature before rolling, energy consumption compared with
Greatly, social cost is caused to increase.
Summary of the invention
The problem to be solved by the invention is to provide a kind of power battery shell aluminium alloy strips and its manufacturing methods, it can
To solve the good lower hardness of existing power battery shell intensity, the larger problem of production process energy consumption.
In order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is that: power battery shell aluminium alloy strips
It is made of the raw material of following mass percent:
Si 0.50~0.60%, Fe < 0.50%, Cu be 0.20~0.40%, Mn < 0.05%, Mg 1.05~
1.20%, Cr 0.15~0.35%, Zn < 0.02%, Ti < 0.05%, surplus Al, wherein according to metal quality percentage
It is divided by, Mg/Si 1.75-2.40；
Its manufacturing step are as follows:
(a) above-mentioned aluminium alloy stock is added aluminium titanium boron wire online and is cast as aluminium after ingredient, melting, refining, degasification slagging-off
Alloy flat bloom；
(b) slab ingot is heated to 530-550 DEG C and keeps the temperature 6-10h, after carrying out homogenization heat treatment, by sawing and milling face；
(c) it is heated to 450-480 DEG C and keeps the temperature 4-8h, hot rolling of coming out of the stove, hot finishing thickness 6.0-10.0mm, hot finishing finishing temperature
280~360 DEG C；
(d) hot rolled coil is rolled to finished product thickness on cold-rolling mill, through over cleaning；
(e) then cold-strip is heated to 380-440 DEG C and keeps the temperature 2-6h, finished products are carried out, with little after heat preservation
It is come out and cooled down after the cooling velocity of 30 DEG C/h cools to 230 DEG C with the furnace；
(f) band after cooling is subjected to trimming, bundling, is fabricated to aluminium alloy strips.
Since present invention employs above-mentioned technical proposals, compared with prior art, have the following beneficial effects:
The present invention is directed to the alloy characteristic of 3003 aluminium alloys, by adding Mg, Cr and Ti, controls the ratio of Mg/Si, and to them
Content be defined, so that the aluminium alloy strips tensile strength manufactured is reached 130-150MPa, earing rate < 3.0%, cupping
Value > 10.0mm, tensile strength just reaches 240MPa or more after punching forming, and yield strength reaches 220MPa or more, punching forming
Surface of shell intensity and hardness afterwards is obviously improved.
2, preparation method is simple, easy to control, easy popularization.
Specific embodiment
Below in conjunction with specific embodiment, the invention will be further described, but technical scope of the invention is not implemented by these
Example limits.
Embodiment 1:
The present embodiment takes the raw material based on metal mass percent as follows:
Si 0.57%, Fe 0.45%, Cu 0.24%, Mn 0.04%, Mg 1.13%, Cr 0.25%, Zn 0.01%, Ti
0.01%, surplus Al;It is divided by according to metal quality percentage, Mg/Si 1.98；
Its manufacturing step are as follows:
(a) above-mentioned aluminium alloy stock is added aluminium titanium boron wire online and is cast as aluminium after ingredient, melting, refining, degasification slagging-off
Alloy flat bloom；
(b) slab ingot is heated to 550 DEG C and keeps the temperature 5h, after carrying out homogenization heat treatment, by sawing and milling face；
(c) 460 DEG C are heated to and keeps the temperature 4h, hot rolling of coming out of the stove, hot finishing thickness 10.0mm, 350 DEG C of hot finishing finishing temperature；
(d) hot rolled coil is rolled to finished product thickness on cold-rolling mill, through over cleaning；
(e) then cold-strip is heated to 400 DEG C and keeps the temperature 3h, finished products are carried out, with the cold of 15 DEG C/h after heat preservation
But speed comes out and cools down after cooling to 230 DEG C with the furnace；
(f) band after cooling is subjected to trimming, bundling, is fabricated to aluminium alloy strips.
Aluminium alloy strips the tensile strength 135-138MPa, earing rate 1.0-1.2%, Erichsen number 10.6- prepared through this method
11.1mm, tensile strength just reaches 250MPa after punching forming, and yield strength reaches 240MPa.
Embodiment 2:
The present embodiment takes the raw material based on metal mass percent as follows:
Si 0.58%, Fe 0.45%, Cu 0.39%, Mn 0.04%, Mg 1.20%, Cr 0.26%, Zn 0.01%, Ti
0.015%, surplus Al;It is divided by according to metal quality percentage, Mg/Si 2.07；
Its manufacturing step are as follows:
(a) ingredient for pressing aluminium alloy strips is added online by aluminium alloy stock after ingredient, melting, refining, degasification slagging-off
Aluminium titanium boron wire is cast as aluminium alloy flat bloom；
(b) slab ingot is heated to 530 DEG C and keeps the temperature 7h, after carrying out homogenization heat treatment, by sawing and milling face；
(c) 460 DEG C are heated to and keeps the temperature 4h, hot rolling of coming out of the stove, hot finishing thickness 6.0mm, 320 DEG C of hot finishing finishing temperature；
(d) hot rolled coil is rolled to finished product thickness on cold-rolling mill, through over cleaning；
(e) then cold-strip is heated to 410 DEG C and keeps the temperature 3h, finished products are carried out, with the cold of 25 DEG C/h after heat preservation
But speed comes out and cools down after cooling to 230 DEG C with the furnace；
(f) band after cooling is subjected to trimming, bundling, is fabricated to aluminium alloy strips.
Aluminium alloy strips the tensile strength 141-144MPa, earing rate 1.3-1.6%, Erichsen number 10.2- prepared through this method
10.6mm, tensile strength just reaches 260MPa after punching forming, and yield strength reaches 245MPa.
Embodiment 3:
The present embodiment takes the raw material based on metal mass percent as follows:
Si 0.50%, Fe 0.49%, Cu 0.40%, Mn 0.04%, Mg 1.05%, Cr 0.15%, Zn 0.015%, Ti
0.045%, surplus Al;It is divided by according to metal quality percentage, Mg/Si 2.1；
Its manufacturing step are as follows:
(a) ingredient for pressing aluminium alloy strips is added online by aluminium alloy stock after ingredient, melting, refining, degasification slagging-off
Aluminium titanium boron wire is cast as aluminium alloy flat bloom；
(b) slab ingot is heated to 530 DEG C and keeps the temperature 6h, after carrying out homogenization heat treatment, by sawing and milling face；
(c) 450 DEG C are heated to and keeps the temperature 8h, hot rolling of coming out of the stove, hot finishing thickness 7.0mm, 280 DEG C of hot finishing finishing temperature；
(d) hot rolled coil is rolled to finished product thickness on cold-rolling mill, through over cleaning；
(e) then cold-strip is heated to 380 DEG C and keeps the temperature 2h, finished products are carried out, with the cold of 29 DEG C/h after heat preservation
But speed comes out and cools down after cooling to 230 DEG C with the furnace；
(f) band after cooling is subjected to trimming, bundling, is fabricated to aluminium alloy strips.
Aluminium alloy strips tensile strength 130-132MPa through this method preparation, earing rate 1.03-1.26%, Erichsen number
10.3-10.8mm, tensile strength just reaches 245MPa after punching forming, and yield strength reaches 225MPa.
Embodiment 4:
The present embodiment takes the raw material based on metal mass percent as follows:
Si 0.60%, Fe 0.40%, Cu 0.20%, Mn 0.03%, Mg 1.05%, Cr 0.35%, Zn 0.015%, Ti
0.03%, surplus Al;It is divided by according to metal quality percentage, Mg/Si 1.75；
Its manufacturing step are as follows:
(a) ingredient for pressing aluminium alloy strips is added online by aluminium alloy stock after ingredient, melting, refining, degasification slagging-off
Aluminium titanium boron wire is cast as aluminium alloy flat bloom；
(b) slab ingot is heated to 540 DEG C and keeps the temperature 10h, after carrying out homogenization heat treatment, by sawing and milling face；
(c) 480 DEG C are heated to and keeps the temperature 5h, hot rolling of coming out of the stove, hot finishing thickness 7.0mm, 360 DEG C of hot finishing finishing temperature；
(d) hot rolled coil is rolled to finished product thickness on cold-rolling mill, through over cleaning；
(e) then cold-strip is heated to 380 DEG C and keeps the temperature 6h, finished products are carried out, with the cold of 26 DEG C/h after heat preservation
But speed comes out and cools down after cooling to 230 DEG C with the furnace；
(f) band after cooling is subjected to trimming, bundling, is fabricated to aluminium alloy strips.
Aluminium alloy strips the tensile strength 133-136MPa, earing rate 1.2-1.4%, Erichsen number 10.1- prepared through this method
10.6mm, tensile strength just reaches 240MPa after punching forming, and yield strength reaches 220MPa.
Claims (2)
1. a kind of power battery shell aluminium alloy strips, it is characterised in that its component is made of following materials in percentage by mass:
Si 0.50~0.60%, Fe < 0.50%, Cu be 0.20~0.40%, Mn < 0.05%, Mg 1.05~
1.20%, Cr 0.15~0.35%, Zn < 0.02%, Ti < 0.05%, surplus Al, wherein according to metal quality percentage
It is divided by, Mg/Si 1.75-2.40.
2. a kind of manufacturing method of power battery shell aluminium alloy strips, it is characterised in that using the original of following mass percent
Material:
Si 0.50~0.60%, Fe < 0.50%, Cu be 0.20~0.40%, Mn < 0.05%, Mg 1.05~
1.20%, Cr 0.15~0.35%, Zn < 0.02%, Ti < 0.05%, surplus Al, wherein according to metal quality percentage
It is divided by, Mg/Si 1.75-2.40,
Its manufacturing step are as follows:
(a) above-mentioned aluminium alloy stock is added aluminium titanium boron wire online and is cast as aluminium after ingredient, melting, refining, degasification slagging-off
Alloy flat bloom；
(b) slab ingot is heated to 530-550 DEG C and keeps the temperature 6-10h, after carrying out homogenization heat treatment, by sawing and milling face；
(c) it is heated to 450-480 DEG C and keeps the temperature 4-8h, hot rolling of coming out of the stove, hot finishing thickness 6.0-10.0mm, hot finishing finishing temperature
280~360 DEG C；
(d) hot rolled coil is rolled to finished product thickness on cold-rolling mill, through over cleaning；
(e) then cold-strip is heated to 380-440 DEG C and keeps the temperature 2-6h, finished products are carried out, with little after heat preservation
It is come out and cooled down after the cooling velocity of 30 DEG C/h cools to 230 DEG C with the furnace；
(f) band after cooling is subjected to trimming, bundling, is fabricated to aluminium alloy strips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811564127.0A CN109487132A (en) | 2018-12-20 | 2018-12-20 | Power battery shell aluminium alloy strips and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811564127.0A CN109487132A (en) | 2018-12-20 | 2018-12-20 | Power battery shell aluminium alloy strips and its manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109487132A true CN109487132A (en) | 2019-03-19 |
Family
ID=65711141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811564127.0A Pending CN109487132A (en) | 2018-12-20 | 2018-12-20 | Power battery shell aluminium alloy strips and its manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109487132A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58167757A (en) * | 1982-03-29 | 1983-10-04 | Nippon Light Metal Co Ltd | Preparation of al-mg-si alloy for processing excellent in corrosion resistance, weldability and hardenability |
| JPH06158244A (en) * | 1992-11-25 | 1994-06-07 | Kobe Steel Ltd | Manufacture of low grain-oriented can body material |
| JP2004211176A (en) * | 2003-01-07 | 2004-07-29 | Nippon Steel Corp | Aluminum alloy sheet superior in formability, paint baking hardenability and corrosion resistance, and manufacturing method therefor |
| CN100586639C (en) * | 2008-06-06 | 2010-02-03 | 中国铝业股份有限公司 | Production process of ABS valve body material for cars |
| CN106086532A (en) * | 2016-06-20 | 2016-11-09 | 中铝瑞闽股份有限公司 | A kind of capacitor case aluminium alloy strips and preparation method thereof |
| CN106636775A (en) * | 2016-12-20 | 2017-05-10 | 中铝瑞闽股份有限公司 | Aluminum alloy strip used for powder battery shell and preparation method of aluminum alloy strip |
| 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 |
-
2018
- 2018-12-20 CN CN201811564127.0A patent/CN109487132A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58167757A (en) * | 1982-03-29 | 1983-10-04 | Nippon Light Metal Co Ltd | Preparation of al-mg-si alloy for processing excellent in corrosion resistance, weldability and hardenability |
| JPH06158244A (en) * | 1992-11-25 | 1994-06-07 | Kobe Steel Ltd | Manufacture of low grain-oriented can body material |
| JP2004211176A (en) * | 2003-01-07 | 2004-07-29 | Nippon Steel Corp | Aluminum alloy sheet superior in formability, paint baking hardenability and corrosion resistance, and manufacturing method therefor |
| CN100586639C (en) * | 2008-06-06 | 2010-02-03 | 中国铝业股份有限公司 | Production process of ABS valve body material for cars |
| CN106086532A (en) * | 2016-06-20 | 2016-11-09 | 中铝瑞闽股份有限公司 | A kind of capacitor case aluminium alloy strips and preparation method thereof |
| CN106636775A (en) * | 2016-12-20 | 2017-05-10 | 中铝瑞闽股份有限公司 | Aluminum alloy strip used for powder battery shell and preparation method of aluminum alloy strip |
| 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 |
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Application publication date: 20190319 |
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