CN102816955A - Aluminum alloy plate for battery case and battery case made from that alloy plate - Google Patents
Aluminum alloy plate for battery case and battery case made from that alloy plate Download PDFInfo
- Publication number
- CN102816955A CN102816955A CN2012102913195A CN201210291319A CN102816955A CN 102816955 A CN102816955 A CN 102816955A CN 2012102913195 A CN2012102913195 A CN 2012102913195A CN 201210291319 A CN201210291319 A CN 201210291319A CN 102816955 A CN102816955 A CN 102816955A
- Authority
- CN
- China
- Prior art keywords
- quality
- battery case
- alloy plate
- aluminium alloy
- manufacture
- 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.)
- Granted
Links
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 41
- 239000000956 alloy Substances 0.000 title description 11
- 229910045601 alloy Inorganic materials 0.000 title description 10
- 239000012535 impurity Substances 0.000 claims abstract description 9
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 27
- 238000000137 annealing Methods 0.000 claims description 17
- 238000005266 casting Methods 0.000 claims description 15
- 238000005097 cold rolling Methods 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 238000005096 rolling process Methods 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000000265 homogenisation Methods 0.000 claims 1
- 238000003466 welding Methods 0.000 abstract description 14
- 229910052802 copper Inorganic materials 0.000 abstract description 9
- 229910052749 magnesium Inorganic materials 0.000 abstract description 9
- 229910052748 manganese Inorganic materials 0.000 abstract description 4
- 229910052726 zirconium Inorganic materials 0.000 abstract description 4
- 229910052719 titanium Inorganic materials 0.000 abstract description 3
- 229910052742 iron Inorganic materials 0.000 abstract description 2
- 230000008018 melting Effects 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 10
- 238000010409 ironing Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 7
- 239000011159 matrix material Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 4
- 230000032683 aging Effects 0.000 description 4
- 238000005275 alloying Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 229910001416 lithium ion Inorganic materials 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 229910052804 chromium Inorganic materials 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 229910000765 intermetallic Inorganic materials 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000005030 aluminium foil Substances 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 229910018575 Al—Ti Inorganic materials 0.000 description 1
- 229910018580 Al—Zr Inorganic materials 0.000 description 1
- QYEXBYZXHDUPRC-UHFFFAOYSA-N B#[Ti]#B Chemical compound B#[Ti]#B QYEXBYZXHDUPRC-UHFFFAOYSA-N 0.000 description 1
- 229910017818 Cu—Mg Inorganic materials 0.000 description 1
- 229910000737 Duralumin Inorganic materials 0.000 description 1
- 229910017639 MgSi Inorganic materials 0.000 description 1
- 229910033181 TiB2 Inorganic materials 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000012768 molten material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 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
-
- 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
-
- 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
-
- 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
- H01M50/147—Lids or covers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B2003/001—Aluminium or its alloys
-
- 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
An aluminium alloy plate and a battery case made of the same are provided to offer proof pressure and laser welding at the same time by controlling the amount of Cu and Mg appropriately corresponding to a melting enhancement element. An aluminium alloy plate for a battery case includes Si of 0.10-0.60wt%, Fe of 0.05-0.60wt%, Cu 0.70-1.0wt%, Mn of 0.10-1.80wt%, Zr of 0.70-1.50wt%, Ti of 0.03-0.25wt%, Al and residue of essential impurities. The battery case is made of the aluminium alloy plate which has a thickness of 4-7mm, a width of 20-30mm, and a height of 40-60mm. The case is a drawn and ironed container.
Description
Technical field
The present invention relates to be used to make the good aluminium alloy plate for battery case of resistance to pressure (withstand pressure) of lithium-ion secondary cell shell etc., and the battery case of processing by this alloy sheets.
Background technology
For weight reduction, has the shell that excellent formability and the manufacturing of high-intensity A3003 alloy are installed in the lithium-ion secondary cell among mobile telephone, the PC etc. through being widely used.Through compacting thickness is that aluminium alloy plate about 0.6mm is made battery case (battery case).Known shell normally size (interior dimensions) is drawing pull and stretch (ironed) container of thickness 4-7mm, width 20-30mm and height 40-60mm.Battery component places in the shell, hides the opening of shell then through the aluminium foil lid (aluminum lid) that provides the electrolyte solution pour spout, and adopts method of laser welding through welding periphery to be sealed.Aluminium foil lid can be to form different aluminum alloy materials by processing with the shell identical materials, perhaps can be based on the material of JISA1000.Sometimes also provide explosion-proof parts (explosion proofing part) in the lid.
Nearest PC, mobile telephone and other electronic installations are increasing on capacity.The lithium-ion secondary cell of installing also becomes increasingly high on performance.And it is more and more stricter that environment utilization (usage environment) also becomes.Therefore, battery case also need have increasingly high resistance to pressure.That is, lithium-ion secondary cell charges at short notice.And they will discharge and the directly proportional big electric current of battery size.Therefore, according to the difference of charging environment, the temperature of battery case itself can be increased to 60-90 ℃ sometimes.And according to the operation to mobile telephone, if for example under the weather of sweltering heat, this device is placed in the car, then temperature also can exceed many.
When battery case reached aforesaid high temperature, the pressure of enclosure raise, and the housing of battery case can expand.In order to prevent that this expansible from taking place, the plate thickness of side wall of outer shell can be processed bigger, but considers that from the angle of using duraluminum to reduce weight this has not just conformed with original intention.Therefore, in order under the situation that does not increase plate thickness, to prevent to expand, consider to make the resistance to pressure of aluminium alloy plate itself become higher.
And, in the manufacturing processed of battery case, consider high productivity, the weldability of the excellence of the high-rate laser welding of therefore simultaneously also will considering to give security.
Japanese Patent open (A) has proposed the preferable aluminium alloy plate that contains Si, Fe, Cu, Mn, Mg, Zr, Ti and B of resistance to pressure (expansibility resistance) for 2006-169574 number.
Promptly; Disclosed technology is the method for manufacture that is used for the high-strength aluminium alloy plate of secondary cell in the Japanese Patent open (A) 2006-169574 number; This method comprises containing Cu: surpass 1.0-2.0%, Mn:0.2-1.0%, Mg:0.1-0.9% and the Al of Zr:0.05-0.2% as required and Cr:0.05-0.2% and surplus and the aluminium alloy plate of unavoidable impurities and handle; Above-mentioned processing is carried out through following process: keep 20-180 second down at 480-560 ℃; Anneal with 20-200 ℃/second rate of cooling then; Weather aging was worn out to it or after annealing, it was carried out cold rollingly in 7 days then, and promptly the final cold rolling reduction (final cold rolling reduction) through 10-60% carries out final cold rolling and/or it is kept down wearing out in 2-24 hour at 100-220 ℃.
But the shortcoming of disclosed technology is that Cu content is very big in Japanese Patent open (A) 2006-169574 number, therefore can not obtain very high weldability, and can not adopt the high-rate laser welding.
On the other hand, Japanese Patent open (A) discloses laser weldability and the preferable aluminium alloy plate that contains Mn, Cu, Mg, Zr and Cr of resistance to pressure (expansibility resistance) for 2005-336540 number.
Promptly; Disclosed technology is the method for manufacture that is used for the HS aluminium sheet of secondary cell shell in Japanese Patent open (A) 2005-336540 number; This method comprises containing Mn:0.6-1.5%, Cu:0.51-1.0%, Mg:0.21-0.7%, Si: less than 0.2%, the aluminium alloy plate of Zr:0.05-0.2% and Cr:0.05-0.2% and surplus Al and unavoidable impurities carries out cold rolling; During this time with 10-250 ℃/second temperature rise rate, carry out process annealing (process annealing) at least once, and carry out cold rolling with the final rolling deflection of 10-60% in the RT of 420-550 ℃ of following 5-60 second and 20-200 ℃/second rate of cooling.
But the shortcoming of disclosed technology is that Mg content is too low in Japanese Patent open (A) 2005-336540 number, so aluminium sheet is relatively poor aspect resistance to pressure.
Like this, in the disclosed technology, resistance to pressure and laser weldability can not be satisfied simultaneously in Japanese Patent open (A) 2006-169574 number and Japanese Patent open (A) 2005-336540 number.
Summary of the invention
An object of the present invention is to provide a kind of aluminium alloy plate for battery case that improves resistance to pressure and laser weldability simultaneously, and the battery case of processing by this alloy sheets.
In order to achieve the above object, according to the invention provides a kind of aluminium alloy plate for battery case, it comprises:
Si:0.10-0.60 quality %,
Fe:0.05-0.60 quality %,
Cu: greater than 0.70 less than 1.0 quality %,
Mn:0.10-1.80 quality %,
Mg: greater than 0.70 smaller or equal to 1.50 quality %,
Zr: greater than 0.10 less than 0.20 quality %,
Ti:0.03-0.25 quality % with
The Al of surplus and unavoidable impurities.
And according to the invention provides the battery case of being processed by aluminium alloy plate, this battery case comprises the aluminium alloy plate with above-mentioned chemical constitution, and after moulding burin-in process.
Aluminium alloy plate of the present invention has been optimized chemical constitution, especially makes Cu and Mg with suitable quantity coexistence, therefore can be through the aging Al based on Al-Cu-Mg that forms sufficient amount
2The CuMg intermediate phase can be realized very high resistance to pressure like this.Simultaneously, it makes Cu content remain on very low level relatively, has therefore improved weldability, and makes it possible to produce the required high-rate laser welding of battery case.
Through adopting the aluminium alloy plate of the present invention that has improved resistance to pressure and weldability in this way; Might be to be higher than productivity electrogenesis in the next life pond shell of high-rate laser welding; Use the battery table of the battery case of being produced to reveal very high resistance to pressure (expansibility resistance); Can bear harsh charging environment, and the electronic installation that this battery is installed can guarantee very high safety.
Make aluminium alloy plate in enhanced newly discovered simultaneously aspect resistance to pressure and the laser weldability according to Cu and Mg (both is the solution strengthening element) with suitable amount coexistence, accomplished the present invention.
Embodiment
To explain the reason of the chemical constitution that limits aluminium alloy plate of the present invention below.
At first, explain necessary alloying constituent of the present invention.
(1) Cu: greater than 0.70 less than 1.0 quality %
Cu especially exists with Mg through the intensity of solution strengthening effect raising aluminium alloy plate jointly, in the manufacturing processed of aluminium alloy plate, forms Al
2The wild phase of CuMg intermediate phase, the intensity that is produced by dispersion-strengthened with further raising also improves resistance to pressure.If Cu content is 0.70 quality % or still less, then when coexisting, form Al with Mg
2The quantity not sufficient of CuMg intermediate phase, the effect that improves intensity is very little.And if Cu content is 1.0 quality % or higher, then the high-rate laser welding is easy to the generation crack in the weld metal zone.Preferably, Cu content is 0.72 quality %-0.98 quality %.
(2) Mg: greater than 0.70 smaller or equal to 1.50 quality %
Mg especially exists with Cu through the intensity of solution strengthening effect raising aluminium alloy plate jointly, in the manufacturing processed of aluminium alloy plate, forms Al
2The wild phase of CuMg intermediate phase, the intensity that is produced by dispersion-strengthened with further raising also improves resistance to pressure.If Mg content is 0.70 quality % or still less, then when coexisting, form Al with Cu
2The quantity not sufficient of CuMg intermediate phase, the effect that improves intensity is very little.And if Mg content is 1.5 quality % or higher, then the high-rate laser welding is easy to the generation crack in the weld metal zone.Preferably, Mg content is 0.75 quality %-1.25 quality %.
(3) Si:0.10-0.60 quality %
(4) Fe:0.05-0.60 quality %
(5) Mn:0.0-1.80 quality %
These elements can provide intensity for aluminium alloy plate; And form fine and closely woven dispersive Al-Fe-base, basic, the Al-(Fe of Al-Mn-; Mn)-Si-base and other intermetallic compounds; Thereby make the grain pattern of recrystallize trickleer, and give the ability of its drawing (drawing) and ironing (ironing).If the content of these elements is lower than above-mentioned lower limit, then their effect is very little, and expansibility resistance becomes relatively poor.And, if surpass the upper limit, then form coarse compound, draw and the reduction of ironing ability, weldability also can variation.
(6) Zr: greater than 0.10 less than 0.20 quality %
(7) Ti:0.03-0.25 quality %
(8) as required, B:0.02 quality % or lower
Add these elements, cause forming the intermetallic compound of the formation freezing nuclei of a large amount of types, prevent when cooling off fast and solidifying to take place the crack, and make it possible to carry out more high speed pulse type laser welding at the bead place through its coexistence.If the content of these elements is less than lower limit numerical value, then effect is very little, is easy to occur the crack.And, if surpass the upper limit, then form coarse compound, and formability descends.Preferred Zr:0.13-0.19 quality %.Can add Zr and Ti through matrix alloy.
Above-mentioned is necessary alloying constituent among the present invention.
Next step explains optional alloying constituent among the present invention, that is, and and B and Cr.
(9) B:0.02 quality % or still less
If the B that adds is 0.02 quality % or still less, the effect of Zr then above-mentioned and Ti can strengthen.If use the material returned very big as the ratio of molten material, then the content of B becomes higher.In common operation, contain 10ppm or still less.For further interpolation, can wait and add through Al-Ti-B matrix alloy, Al-B matrix alloy.If the B that adds, then forms compound between the textured metal that TiB2 and other contain B greater than 0.02 quality %, be easy to take place edge crack outside casing forming the time.Preferably, the add-on of B is 0.01 quality % or still less.
(10) Cr:0.35 quality % or still less
If the Cr that adds is 0.35 quality % or still less, then the crystal grain of recrystallize is prepared into finer and closely wovenly, and the crust of container obtains covering with paint attractive in appearance.Be noted that Cr derives from salvage material etc. inevitably.In common operation, its content is 0.01 quality % or still less, in order to obtain to add the effect of Cr, its content is necessary greater than 0.01 quality %.This content is preferably Cr0.1 quality % or more, more preferably Cr 0.15 quality % or more.If surpassed the upper limit, promptly 0.35 quality % then produces coarse intermetallic compound, and formability descends.
(11) unavoidable impurities
Unavoidable impurities is the element outside the span of control, and they get into from raw metal, salvage material etc. inevitably.Typical unavoidable impurities is, for example, Zn:0.25 quality % or still less, Ga and V:0.05 quality % or still less and other elements: 0.05 quality % or still less.In this scope,, can not suppress effect of the present invention even comprised the element outside the span of control yet.
Next step, with the method for explaining use aluminium alloy plate manufacturing of the present invention battery case, but the method for manufacture of battery case is not contained in the present invention, therefore also is not limited.
Aluminium alloy melt by said composition is formed is cast through semicontinuous casting method (DC casting), to produce ingot casting, then ingot casting is soaked (soak).Ingot casting is carried out facing cut (face milled).This step can be carried out before soaking, and perhaps after soaking, at room temperature carried out.Immersion can be carried out as follows: ingot casting was remained on 500-600 ℃ * 1 hour or longer, to eliminate the segregation of ingot casting, make its homogeneous.
Leave the ingot casting that soaks stove and begin under its residing temperature, to carry out hot rolling, or be reduced to 430-560 ℃ temperature a little, to obtain hot-rolled sheet.
Then with the cold rolling one-tenth thin plate of the hot-rolled sheet that obtains (thin-gauge plate).In order to make recrystallization texture finer and closely woven because of the process annealing of back; Make crust attractive in appearance because of drawing and ironing; Rolling reduction in cold rolling (%) [{ (thickness before rolling-rolling thickness afterwards)/rolling thickness before } * 100] preferably sets very highly, especially sets 50% or higher for.
Then will be with 50% or the higher cold rolling cold-reduced sheet process annealing of rolling reduction.The purpose of this process annealing is to the recrystallize of processing structure and dissolving again of alloying element.The condition of process annealing is; Use batch annealing; Plate was kept 1 hour down or the longer time at 300-400 ℃, and use continuous annealing, with 10 ℃/second or higher heating rate heating; Keep 10 minutes or less time down at 450-550 ℃, and with 10 ℃/second or higher rate of cooling cooling.Hold-time is set longly more, then keeps temperature low more, and the former is short more, and then the latter is high more.After this process annealing, weather aging was carried out along with the time.Form GP through Cu, Mg, Si and other elements and bring raising intensity.And the raising of this intensity has the effect that improves drawing and ironing ability.
At last, through the final cold rolling aluminium alloy plate that comes rolling process annealing.Rolling reduction is preferably 10-60% in this case.Be in order to provide suitable work hardening to draw and the ironing ability like this with improving.
Consequent aluminium alloy plate is drawn and ironing, obtain battery case.This drawing and ironing comprise, for example, in a plurality of stages, draw and in final technology ironing, to produce very thin, the highly very high battery case of sidewall thickness.The aluminium alloy plate of the present invention that is used for producing this shell has fully dissolved Cu, Mg and Si, therefore will be aging by the battery case that this aluminium alloy plate is processed through the artificially, just formed GP band and S'-Al
2CuMg intermediate phase or MgSi
2Intermediate phase, the GP further growth, and can obtain the battery case that intensity is very high, expansibility resistance is very high.
Embodiment
Next step will explain specific embodiment of the present invention.
Produce aluminium alloy melt through semi-continuous process, and be cast as thickness 530mm under the condition below, width 1100mm: 2.5-3.0 liter/cm-min water coolant from mold, ingot casting drawing speed is 40-60mm/min.Use the Al-Zr matrix alloy to add Zr, use the Al-Ti matrix alloy to add Ti, and use the Al-Ti-B matrix alloy to add B.Moity is shown in table 1.
Table 1
Annotate 1: underscore representes to exceed scope of the present invention.
Annotate 2: the Al of surplus and other unavoidable impurities.
"-" mark of notes 3:Cr representes 0.01 quality % or still less, "-" of B represents 10ppm or lower
Annotate 4: file 1=Japanese Patent open (A) 2006-169574 number
Annotate 5: file 2=Japanese Patent open (A) 2005-336540 number
Next step with the ingot casting facing cut and the immersion that obtain, kept 3 hours down at 590 ℃.After the hold, begin to carry out hot rolling from 500 ℃, under 400 ℃ outlet temperature, obtaining thickness is the hot-rolled sheet of 6mm.Next step, it is the cold-reduced sheet of 1.0mm that this plate is become thickness through four cold rollings.Through temperature rise rate heating the carry out process annealing of electromagnetic induction heating with 50 ℃/second.This plate keeps several seconds down at 520 ℃, carries out the water quenching then.After the water quenching, this plate is through final cold rolling being rolled, and obtaining thickness is the milled sheet of 0.6mm.Final cold rolling reduction is 40%.
The milled sheet that obtains is used for level Four and draws operation.With the plate ironing of processing, the acquisition interior dimensions is the drawing pull and stretch container of 6mm * wide 25mm.Cut away lug (ear) part, obtain evenly highly being the battery case of 50mm.The plate thickness of body skin is 0.25mm.This battery case is handled, worn out 1 hour down at 160 ℃.
And identical with shell lid is formed in preparation, is placed on the opening portion of aged battery case, and carries out laser welding herein.With the fissured existence in 40 * reading lens visual inspection weld metal zone.To there not being fissured intact shell to observe, to detect the degrees of expansion under the following condition.The result is presented in the table 2.
< swell increment >
Shell and lid are sealed together through laser welding under following condition, obtain test sample.This test sample is at 2kgf/cm
2Internal pressure held 100 ℃ * 1 hour, be cooled to room temperature, measure the swell increment of housing parts then through calipers.Swell increment is big more, shows more easily to expand.
Swell increment=(detecting the original thickness at the Hou Du – case body center at rear casing housing center) * 1/2
Be noted that " the housing " center " is meant cornerwise point of crossing, surface, long limit.
< laser welding >
Weldrate: 30mm/ second
1 subpulse time: 0.3ms
Output: 2.5J/ point
Defocus distance: being adjusted to width is 1mm
Frequency: 100Hz
Table 2
Annotate 1: underscore representes to exceed scope of the present invention.
Annotate 2: file 1=Japanese Patent open (A) 2006-169574 number
Annotate 3: file 2=Japanese Patent open (A) 2005-336540 number
Can find out that from the result of table 2 1-6 sample according to the present invention does not have the crack, and swell increment is very little.On the other hand, can find out that the big comparative example of Cu content (No. 7 samples) has weld crack, and little comparative example (the 8 and No. 10 samples) swell increment of Mg content is very big.And, can find out that the little comparative example of Cu content (No. 9 samples) swell increment is also very big.The comparative example that is noted that No. 7 samples has weld crack, so this sample heats and slow down the weldrate of welding to shell when carrying out swell test, to prevent that weld crack from occurring and confirming not having the crack to exist.
Claims (5)
1. the method for manufacture of an aluminium alloy plate for battery case may further comprise the steps:
The molten aluminium that preparation is made up of following component:
Si:0.10-0.60 quality %,
Fe:0.05-0.60 quality %,
Cu:0.72-0.98 quality %,
Mn:0.10-1.80 quality %,
Mg:0.85-1.50 quality %,
Zr: greater than 0.10 less than 0.20 quality %,
Ti:0.03-0.25 quality % and
The Al of surplus and unavoidable impurities;
Through the semicontinuous casting method said aluminium alloy melt is cast as ingot casting;
Said ingot casting was carried out homogenization treatment 1 hour or longer at 500-600 ℃; And subsequently,, said ingot casting is rolled into thin plate with the starting temperature of 430-560 ℃ said ingot casting;
With 50% or the higher cold rolling said thin plate of rolling reduction; And subsequently,
Said thin plate is carried out process annealing; And
Final rolling reduction with 10-60% becomes final specification with said cold rolled thin plate.
2. the method for manufacture of aluminium alloy plate for battery case according to claim 1 is characterized in that
Said molten aluminium also contains B:0.02 quality % or still less.
3. the method for manufacture of aluminium alloy plate for battery case according to claim 1 is characterized in that
Said molten aluminium also contains Cr:0.35 quality % or still less.
4. according to the method for manufacture of each described aluminium alloy plate for battery case among the claim 1-3, it is characterized in that
Through batch annealing, under 300-400 ℃ temperature, kept 1 hour or longer, carry out said process annealing.
5. according to the method for manufacture of each described aluminium alloy plate for battery case among the claim 1-3, it is characterized in that
Through continuous annealing,, under 450-550 ℃ temperature, kept 10 minutes or shorter, and, carry out said process annealing with 10 ℃/second or higher rate of cooling with 10 ℃/second or higher heating rate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007215908A JP5396701B2 (en) | 2007-08-22 | 2007-08-22 | Aluminum alloy plate battery case |
| JP2007-215908 | 2007-08-22 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100045581A Division CN101373818B (en) | 2007-08-22 | 2008-01-22 | Aluminium alloy plate for battery case and battery case made thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102816955A true CN102816955A (en) | 2012-12-12 |
| CN102816955B CN102816955B (en) | 2015-05-20 |
Family
ID=40447844
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100045581A Active CN101373818B (en) | 2007-08-22 | 2008-01-22 | Aluminium alloy plate for battery case and battery case made thereof |
| CN201210291319.5A Active CN102816955B (en) | 2007-08-22 | 2008-01-22 | Aluminum alloy plate for battery case and battery case made from that alloy plate |
| CN201210290781.3A Active CN102828072B (en) | 2007-08-22 | 2008-01-22 | Aluminum alloy plate for battery case and battery case made from same |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100045581A Active CN101373818B (en) | 2007-08-22 | 2008-01-22 | Aluminium alloy plate for battery case and battery case made thereof |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210290781.3A Active CN102828072B (en) | 2007-08-22 | 2008-01-22 | Aluminum alloy plate for battery case and battery case made from same |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5396701B2 (en) |
| KR (2) | KR20090020458A (en) |
| CN (3) | CN101373818B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103981401A (en) * | 2014-04-30 | 2014-08-13 | 苏州有色金属研究院有限公司 | High-strength aluminum alloy used for lithium ion battery shell and having excellent laser welding performance |
| CN105886975A (en) * | 2015-02-16 | 2016-08-24 | 波音公司 | Method for manufacturing anodized aluminum alloy parts without surface discoloration |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5276419B2 (en) * | 2008-12-01 | 2013-08-28 | 住友軽金属工業株式会社 | Aluminum alloy plate for square container |
| CN101851715A (en) * | 2009-03-31 | 2010-10-06 | 株式会社神户制钢所 | Aluminium alloy plate for battery case and battery case |
| JP5542472B2 (en) * | 2010-02-17 | 2014-07-09 | 株式会社東芝 | Battery component, battery pack, and battery pack manufacturing method |
| JP2012045570A (en) * | 2010-08-26 | 2012-03-08 | Kobe Steel Ltd | Method for manufacturing aluminum joined body |
| US9890443B2 (en) * | 2012-07-16 | 2018-02-13 | Arconic Inc. | 6XXX aluminum alloys, and methods for producing the same |
| JP5527369B2 (en) * | 2012-07-27 | 2014-06-18 | 日本軽金属株式会社 | Aluminum alloy plate for battery case and manufacturing method thereof |
| CN102899541B (en) * | 2012-08-29 | 2014-07-02 | 东北轻合金有限责任公司 | 5A06H14 sheet metal with thickness of 8.5mm, and preparation method thereof |
| JP5954099B2 (en) * | 2012-10-12 | 2016-07-20 | 日本軽金属株式会社 | Aluminum alloy sheet for battery cases with excellent formability, heat dissipation and weldability |
| CN102925758A (en) * | 2012-10-25 | 2013-02-13 | 苏州有色金属研究院有限公司 | Aluminum alloy for lithium ion battery cases |
| CN103898379B (en) * | 2012-12-29 | 2016-03-09 | 比亚迪股份有限公司 | A kind of lithium ion battery aluminium alloy burst disk |
| JP5929855B2 (en) * | 2013-08-02 | 2016-06-08 | 日本軽金属株式会社 | Aluminum alloy sheet for battery cases with excellent formability, heat dissipation and weldability |
| 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 |
| CN106282692B (en) * | 2016-08-26 | 2018-01-19 | 山东诺维科轻量化装备有限公司 | A kind of preparation method of the vehicle body of railway vehicle aluminium section bar of high bending property |
| CN106876615A (en) * | 2017-02-27 | 2017-06-20 | 中国东方电气集团有限公司 | A kind of sodium-sulphur battery anti-corrosion method |
| 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 |
| CN107393718B (en) * | 2017-08-16 | 2019-09-20 | 韶关东阳光电容器有限公司 | High temperature resistant aluminium electrolutic capacitor |
| CN108385000B (en) * | 2018-02-09 | 2019-08-23 | 深圳市华加日西林实业有限公司 | The processing technology and application of aluminium alloy and aluminium alloy extrusions |
| CN112063895A (en) * | 2020-09-10 | 2020-12-11 | 江苏鼎胜新能源材料股份有限公司 | Aluminum material for producing capacitor shell by cast-rolling blank and preparation method thereof |
| CN115341082B (en) * | 2022-08-01 | 2023-11-17 | 浙江永杰铝业有限公司 | Preparation method of aluminum alloy strip and aluminum alloy strip |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0593238A (en) * | 1991-09-25 | 1993-04-16 | Kobe Steel Ltd | High strength aluminum alloy for dc butt seam welding for aluminum wheel and welding method therefor |
| JP2001003131A (en) * | 1999-06-17 | 2001-01-09 | Furukawa Electric Co Ltd:The | Aluminum alloy material excellent in low temperature creep characteristics, its manufacture, and aluminum alloy product |
| JP2005336540A (en) * | 2004-05-26 | 2005-12-08 | Mitsubishi Alum Co Ltd | Aluminum alloy sheet for secondary battery case and its production method |
| JP2006104580A (en) * | 2005-11-09 | 2006-04-20 | Nippon Light Metal Co Ltd | Aluminum alloy sheet having excellent pulse laser weldability |
| JP2006169574A (en) * | 2004-12-15 | 2006-06-29 | Mitsubishi Alum Co Ltd | Aluminum alloy sheet for secondary battery case and producing method therefor |
| CN1955326A (en) * | 2002-12-19 | 2007-05-02 | 日本轻金属株式会社 | Aluminum alloy plate for rectangular cross section battery case |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11310842A (en) * | 1998-04-28 | 1999-11-09 | Nippon Steel Corp | Aluminum alloy sheet for fuel tank, excellent in seam weldability, and its manufacture |
| JP4053181B2 (en) * | 1999-05-27 | 2008-02-27 | 古河スカイ株式会社 | Aluminum alloy case material for sealed prismatic battery and method of manufacturing aluminum alloy case for sealed prismatic battery |
| KR100688764B1 (en) * | 2004-03-31 | 2007-03-02 | 가부시키가이샤 고베 세이코쇼 | Aluminum alloy plate, process for producing the same, and battery case made of aluminum alloy |
| JP4290165B2 (en) * | 2005-06-22 | 2009-07-01 | 住友軽金属工業株式会社 | Aluminum alloy plate for battery case and manufacturing method thereof |
| JP2007211290A (en) * | 2006-02-09 | 2007-08-23 | Sumitomo Light Metal Ind Ltd | Aluminum alloy sheet for battery case, and its manufacturing method |
| JP4888177B2 (en) * | 2007-03-19 | 2012-02-29 | 日本軽金属株式会社 | Method for manufacturing rectangular cross-section battery container using aluminum alloy plate |
-
2007
- 2007-08-22 JP JP2007215908A patent/JP5396701B2/en active Active
-
2008
- 2008-01-21 KR KR1020080006005A patent/KR20090020458A/en active Search and Examination
- 2008-01-22 CN CN2008100045581A patent/CN101373818B/en active Active
- 2008-01-22 CN CN201210291319.5A patent/CN102816955B/en active Active
- 2008-01-22 CN CN201210290781.3A patent/CN102828072B/en active Active
-
2014
- 2014-12-22 KR KR1020140185935A patent/KR101798278B1/en active IP Right Grant
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0593238A (en) * | 1991-09-25 | 1993-04-16 | Kobe Steel Ltd | High strength aluminum alloy for dc butt seam welding for aluminum wheel and welding method therefor |
| JP2001003131A (en) * | 1999-06-17 | 2001-01-09 | Furukawa Electric Co Ltd:The | Aluminum alloy material excellent in low temperature creep characteristics, its manufacture, and aluminum alloy product |
| CN1955326A (en) * | 2002-12-19 | 2007-05-02 | 日本轻金属株式会社 | Aluminum alloy plate for rectangular cross section battery case |
| JP2005336540A (en) * | 2004-05-26 | 2005-12-08 | Mitsubishi Alum Co Ltd | Aluminum alloy sheet for secondary battery case and its production method |
| JP2006169574A (en) * | 2004-12-15 | 2006-06-29 | Mitsubishi Alum Co Ltd | Aluminum alloy sheet for secondary battery case and producing method therefor |
| JP2006104580A (en) * | 2005-11-09 | 2006-04-20 | Nippon Light Metal Co Ltd | Aluminum alloy sheet having excellent pulse laser weldability |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103981401A (en) * | 2014-04-30 | 2014-08-13 | 苏州有色金属研究院有限公司 | High-strength aluminum alloy used for lithium ion battery shell and having excellent laser welding performance |
| CN105886975A (en) * | 2015-02-16 | 2016-08-24 | 波音公司 | Method for manufacturing anodized aluminum alloy parts without surface discoloration |
| US10415128B2 (en) | 2015-02-16 | 2019-09-17 | The Boeing Company | Method for manufacturing anodized aluminum alloy parts without surface discoloration |
| CN105886975B (en) * | 2015-02-16 | 2020-03-27 | 波音公司 | Method for producing anodized aluminum alloy parts free from surface discoloration |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102828072A (en) | 2012-12-19 |
| CN102816955B (en) | 2015-05-20 |
| CN101373818B (en) | 2013-05-29 |
| KR20150013408A (en) | 2015-02-05 |
| CN101373818A (en) | 2009-02-25 |
| JP5396701B2 (en) | 2014-01-22 |
| CN102828072B (en) | 2015-02-04 |
| JP2009046743A (en) | 2009-03-05 |
| KR20090020458A (en) | 2009-02-26 |
| KR101798278B1 (en) | 2017-11-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102816955B (en) | Aluminum alloy plate for battery case and battery case made from that alloy plate | |
| CN110551924B (en) | Aluminum alloy and preparation method and application thereof | |
| EP3722446B1 (en) | Aluminum alloy sheet for battery lids for molding integrated explosion-prevention valve, and method for producing same | |
| CN107502787B (en) | A kind of new energy battery cover explosion-proof valve aluminium alloy strips and preparation method thereof | |
| JP5004007B2 (en) | Aluminum alloy plate for battery lid and manufacturing method thereof | |
| KR100682593B1 (en) | Aluminum alloy plate for rectanglar cross section battery case | |
| CN101538665B (en) | Aluminum alloy plate for battery box and manufacturing method thereof | |
| JP3843368B2 (en) | Aluminum alloy plate for battery case with excellent resistance to high temperature blistering and method for producing the same | |
| CN105714155B (en) | A kind of electrokinetic cell shell aluminium sheet, aluminium strip and its production method | |
| CN109082566B (en) | 6-series alloy aluminum plate strip for mobile phone frame and preparation method thereof | |
| CN106967894A (en) | A kind of 6010 aluminum alloy melt casting techniques | |
| CN107937775A (en) | A kind of high-strength duralumin, hard alumin ium alloy for mobile phone shell and preparation method thereof | |
| EP3872203A1 (en) | Aluminum alloy sheet for battery lid for forming integrated explosion prevention valve, and method for producing same | |
| EP3842558A1 (en) | Aluminum alloy sheet for battery lid for molding integrated explosion-proof valve and production method therefor | |
| JP5527369B2 (en) | Aluminum alloy plate for battery case and manufacturing method thereof | |
| CN103255323A (en) | Al-Mg-Zn-Cu alloy and preparation method thereof | |
| EP3842559A1 (en) | Aluminum alloy sheet for battery lid for molding integrated explosion-proof valve and production method therefor | |
| EP3842557A1 (en) | Aluminum alloy sheet for battery lid for molding integrated explosion-proof valve and production method therefor | |
| CN108913925B (en) | 6-series alloy anodized aluminum plate strip for mobile phone frame and preparation method thereof | |
| JP5233568B2 (en) | Aluminum alloy plate excellent in heat resistance and formability and manufacturing method thereof | |
| JP2008223054A (en) | Aluminum alloy sheet for forming-work having excellent deep drawability and burning/softening resistance, and producing method therefor | |
| EP3862449A1 (en) | Aluminum alloy plate for battery lid for use in molding of integral explosion-proof valve, and method for producing same | |
| CN103409668B (en) | Al-Mn alloy for lithium-ion battery shell | |
| JP2007194221A (en) | Method of manufacturing rectangular-cross-sectional battery container using aluminum alloy plate | |
| US20210363616A1 (en) | Aluminum alloy sheet for battery lid use for forming integrated explosion-proof valve and method of production of same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |