CN103928651B - Preparation metal structure lug monomer, row's formula lug and manufacture method - Google Patents
Preparation metal structure lug monomer, row's formula lug and manufacture method Download PDFInfo
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- CN103928651B CN103928651B CN201310015758.8A CN201310015758A CN103928651B CN 103928651 B CN103928651 B CN 103928651B CN 201310015758 A CN201310015758 A CN 201310015758A CN 103928651 B CN103928651 B CN 103928651B
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- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
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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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Abstract
The present invention relates to preparation metal structure lug monomer, row's formula lug and manufacture method, this lug monomer is strip lamellar, integral thickness is 0.05～0.3mm, including the aluminium substrate of strip and aluminium substrate one end or the easy weld part in centre position, wherein, described easy weld part is the recess formation physics metallurgy layer of the easy weld layer that rolling is combined in the recess of described aluminium substrate, the sidepiece of easy weld layer and whole bottom and aluminium substrate, and the thickness of easy weld layer accounts for the 1%～95% of lug monomer gross thickness.This row's formula lug is combined by a plurality of above-mentioned lug monomer tabs.This manufacture method includes being embedded in the groove on aluminium strip surface easy welding metal strips, rolling；To the composition metal band continuous bright annealing after rolling and rolling；Shear and prepare lug monomer；Lug monomer is carried out surface degreasing, passivation and drying and processing.This lug bond strength is high, and contact resistance is little.The method low cost, it is easy to accomplish.
Description
Technical field
The present invention relates to battery pole ear, more particularly, it relates to polymer, liquid flexible packing, lithium ion battery with hard shell are electric
Core lug, and relate to its manufacture method.
Background technology
At present, polymer, liquid flexible packing, lithium ion battery with hard shell battery core anode ear mostly use aluminium pole ears, many institutes
Known, lug needs to weld with battery management route protection plate or electric wire, but aluminum cannot with the stannum on protection board or electric wire
Realize good seam.For solving this problem, the existing process program overwhelming majority uses Laser Welding or ultra-sonic welded by one section of nickel sheet
Turn the exposed junction being welded to aluminium pole ears with overlapping mode, carry out with the stannum on route protection plate or electric wire again by turning the nickel sheet welded
Connect.This turn of weldering overlapping mode brings again following four aspect problems: 1, the concavo-convex vestige shadow that laser or ultrasonic solder joint are formed
Ring the outward appearance of battery core；2, between weldering node real contact area and both (aluminum and the nickel) between aluminum and nickel overlap joint formed folded
It is less that the conjunction gross area compares ratio, it is meant that contact resistance is unfavorable for that greatly battery core internal resistance reduces；3, the increase meaning of welder's sequence is turned
The production cost increase that battery core makes, quality unstability increases simultaneously；4, the lug of postwelding is turned near lap-joint easily
Rosin joint, sealing-off even breakage phenomenon occurs.
In addition to above-mentioned aluminium pole ears turns weldering nickel sheet mode, there have been developed several other technical sides both at home and abroad in same field
Case.Mainly there is following several big class.
One, aluminium pole ears plating ni-type.As Chinese invention patent application 201010241631.4,200810236321.6,
201110308950.7 belong to this type of, and they can save the operation turning weldering nickel, but plating technic on the one hand exist plating or
It is unreliable, insecure, the thinnest impact of coating final scolding tin effect that the coating that electroless plating technology is inherently present is combined with base material
Serious problems；On the other hand during plating, substantial amounts of chemical waste fluid uses and discharge can pollute difficulty to surrounding enviroment, because of
This such technical scheme does not really obtain batch popularization and application.
Two, bridging type turns bit copper, such as Chinese utility model patent 201120357203.8, equally exists above-mentioned bridging type and turns
The defect of weldering nickel.
Three, integration is formed at al and ni overlapping position hot melt material.As, Chinese invention patent application
200510122316.9 use the hot melt material of organic polymer type that at folded position, aluminium pole ears is carried out packaging type with nickel melts
Closing, this mode actually can only ensure the fusion of hot melt material itself, and the al and ni inside hot melt is due to the most mutually
Plastic deformation thus be difficult to really form mutual strong bonded, aluminum nickel contact resistance between the two is obviously the biggest, causes whole
Body battery core internal resistance increases, and the integrated beauty of battery product at battery core anode ear bared end prominent hot melt block physical breakdown
The property seen.
Four, special-shaped compound metal type lug.United States Patent (USP) US2011/0274964 provides a kind of special-shaped compound metal type
Lug solution, the program is to produce the aluminum/copper composite metal material of composite construction of appearing (such as a portion in Fig. 1 by composite algorithm
Shown in point), then use etching, planing, mechanical-moulded mode to remove the layers of copper part of local, finally prepare special-shaped compound gold
Genotype lug (as shown in the b part in Fig. 1), the part that in Fig. 1, dotted line represents is the layers of copper removed.This lug one end (
In battery core packaging bag) be aluminum, the other end (exposing battery core part) be then be compounded with on the basis of aluminium base for improve with
One layer of copper material of wiring board welding, i.e. lug two-end thickness is different and material is the most different.But, lithium ion cell polar ear is overall
Thickness is typically in 0.05～0.3mm scope, it is clear that again will accurate removing office on the basis of the thinnest face sandwich
The realizability of the copper composite bed of position, portion is the least, cost is the highest, thus and unrealistic.
Summary of the invention
It is an object of the invention to provide a kind of composite metal structures lug and manufacture method thereof, to solve the existence of existing lug
Above-mentioned contact resistance big, process cost is high, bond strength is low, poor reliability, affect the problems such as product is attractive in appearance.
For reaching above-mentioned purpose, inventor uses the professional standing and experience that it is abundant, through studying for a long period of time and putting into practice, and innovation
Property propose and use roll-bonding method to prepare the process program of aluminum base preparation structural metallic materials, and then propose this
Bright technical scheme.
The invention provides a kind of preparation metal structure lug monomer exempting to turn weldering, this lug monomer is strip sheet
Shape, integral thickness is 0.05～0.3mm, this lug monomer include strip aluminium substrate and be arranged at this aluminium substrate one end or in
Between the easy weld part of position, wherein, at least one side in described aluminium substrate one end or centre position has recess, described easy weld part
It is the recess formation physics of the easy weld layer rolling and being combined in described recess, the sidepiece of easy weld layer and whole bottom and aluminium substrate
Metallurgy layer, the thickness of easy weld layer accounts for the 1%～95% of lug monomer gross thickness, and this lug monomer has the part of easy weld layer and do not has
The thickness having the part of easy weld layer is equal.
Preferably, described easy weld layer is the nickel dam that purity is not less than 99.80%.
Preferably, described easy weld layer is layers of copper.
Present invention also offers a kind of row's formula lug, it includes a plurality of above-mentioned lug monomer, a plurality of lug monomers
Arranging the most side by side and with interval, on the aluminium substrate of a plurality of lug monomers, at easy weld layer, hot paste closes lug
These a plurality of lug monomers are linked as a whole by glue.
Present invention also offers a kind of manufacture method exempting to turn the preparation metal structure lug monomer of weldering, the method bag
Include following steps:
S1, easy welding metal strips is embedded in the groove on aluminium strip surface, rolling, is combined into aluminum base and inlays easy welding metal strips
Composition metal band；
S2, to described composition metal band continuous bright annealing and rolling so that it is meet final lug monomer hardness and thickness
Degree requirement；
S3, shear according to the length and width of lug monomer, prepare lug monomer；
S4, lug monomer is carried out surface degreasing, passivation and drying and processing.
Preferably, described easy welding metal strips is the nickel strap that purity is not less than 99.80%, and in step S1, described rolling is in room
Temperature is carried out at 350 DEG C, and rolling deformation rate is 30%～takes antiseized aluminum measure in 70%, and the operation of rolling.
Preferably, described easy welding metal strips is copper strips, and in step S1, described rolling is carried out at room temperature to 300 DEG C, rolls
Deformation rate processed is 30%～takes antiseized aluminum measure in 70%, and the operation of rolling.
Preferably, in step S2, the process conditions of continuous bright annealing are that reducing atmosphere or inert atmosphere, annealing temperature are
500～630 DEG C, annealing speed be 0.5～6 m/min, and the deformation rate of the rolling carried out between twice annealing is not more than 50%.
Preferably, described antiseized aluminum measure is that local oiling, cooling, work roll surface cladding anti-stick coating and roller-cleaning device are clear
At least one in four kinds of modes of brush.
Preferably, locally the antiseized aluminum measure of oiling includes arranging oiling station and oil baffle, and oil baffle is with certain pressure
Tangent with work roll surface of revolution contacting, and its position is relative with easy welding metal strips, oiling station is arranged on oil baffle
And between the outlet of work roll.
The easy weld layer of lug of the present invention and aluminium substrate use rolling mill practice to be complex as a whole, the side of easy weld layer and whole
Individual bottom surface forms physics metallurgy layer with the recess of aluminium substrate, and not only making the two be securely joined with is an entirety, and bond strength is high,
Good reliability, and contact resistance is little.Meanwhile, it does not has pad, the hot melt material etc. of cladding, and integral thickness is identical, table
Face is smooth, does not interferes with the attractive in appearance of battery.
Manufacture method process cost of the present invention is low, and is easily achieved.Compared with the prior art using plating technic, it is achieved
Environmental protection production.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the preparation process of existing special-shaped compound metal type lug；
Fig. 2 is the schematic diagram that other metal composite process inlayed by the aluminum base in the case of overall work lubricating rollers；
Fig. 3 is the side-looking structural representation of some embodiments of the invention local oiling antiseized aluminum device；
Fig. 4 be Fig. 3 local oiling antiseized aluminum device face structural representation；
Fig. 5 is the structural representation of row's formula lug that some embodiments of the invention prepare；
Fig. 6 is that the A-A of Fig. 5 is to sectional view；
Fig. 7 is the structural representation of row's formula lug that other embodiments of the present invention prepare；
Fig. 8 is that the B-B of Fig. 7 is to sectional view.
Detailed description of the invention
What the present invention constructed exempts to turn a preparation metal structure lug for weldering, can be used for lithium-ion electric core.This preparation
The base material of metal structure lug is aluminum, and inlay on aluminium base one end or the two sides in centre position or one side easy weld layer (as nickel,
Copper etc.), aluminium base forms physics metallurgy layer strong bonded with easy weld layer in side and bottom surface, and easily welding sheet accounts for lug gross thickness
Ratio can be 1%～95%.Lug gross thickness can be 0.05～0.3mm.
Its manufacture method is as follows: S1, easy welding metal strips be embedded in the groove on aluminium strip surface, rolling, is combined into aluminum base
Inlay the composition metal band of easy welding metal strips；S2, to described composition metal band continuous bright annealing and rolling so that it is full
The final lug monomer hardness of foot and thickness requirement；S3, shear according to the length and width of lug monomer, prepare lug monomer；S4、
Lug monomer is carried out surface degreasing, passivation and drying and processing.
When aluminum combines with other common metal (such as copper, nickel etc.), there is big, the easy formation of physical property difference and change between metal
The many such as compound is unfavorable for preparing the factor of composite metal product, it is necessary to considers and is solved.Theoretical according to material foundation:
Metal purity is the highest, and recrystallization softening temperature is the lowest, and vice versa.When selecting nickel strap to do easy welded bands, in order to ensure nickel sheet
With the strong bonded of aluminium flake, the purity of nickel strap must assure that at 99.80%(percentage by weight) more than, now compound after continuous
The complete softening temperature of its nickel constituent element of bright annealing is less than the fusing point 660 DEG C of aluminum so that nickel and aluminum constituent element are at overall composition metal
In can realize the effect that simultaneously softens completely.When nickel material purity is at 95%～99.79%, in follow-up continuous bright soft annealing
Process and will be unable to when being machined to finished product realizes constituent element al and ni material in composition metal and reaches the effect of complete soft state simultaneously, and aluminum and
It is to make necessary to they strong bonded that nickel reaches complete soft state simultaneously.
When selecting nickel strap to do easy welded bands, in the composite technique for rolling of step S1, if temperature is too high, the most easily
Make aluminium roll banding cause being combined unsuccessfully, and by between aluminum/nickel interface generate considerable damage combined strength bination brittle metal between
Compound layer；Meanwhile, critical composite deformation rate may not reached cause being combined unsuccessfully if Rolling compund deformation rate is too low, if
Rolling compund deformation rate is too high, causes residual stress between the two to destroy combined strength bination because aluminum nickel deformation mechanics performance difference is excessive.
The process conditions of rolling in step S1, through deep theoretical research and experiment, are defined as: enter at room temperature to 350 DEG C by inventor
OK, rolling deformation rate is 30%～70%, and, in order to prevent from working in the operation of rolling, Kun glues aluminum, also takes antiseized aluminum and arranges
Execute.
When selecting copper strips to do easy welded bands, owing to recrystallization (softening) temperature contrast between copper/aluminum is far beyond aluminum/nickel
Little, when being therefore combined pairing, the purity to copper material does not has particular/special requirement.Accordingly, in step S1, the process conditions of rolling determine
For: carrying out at room temperature to 300 DEG C, rolling deformation rate is 30%～70%, and, in order to prevent from working in the operation of rolling, Kun glues
Aluminum, also takes antiseized aluminum measure.
Above-mentioned antiseized aluminum measure, can use local oiling, cooling, work roll surface cladding antiseized aluminized coating, clear roller
Any one in four kinds of modes cleaned with water by device, it would however also be possible to employ combinations thereof.It is pointed out that the antiseized aluminum of local oiling
Measure is an innovation of inventor.For aluminium rolling, adding lubricating oil on whole work roll face antiseized is conventional hands
Section.Whole face is carried out to the Rolling compund of aluminium and other metal material being combined, due to lubricating oil exist only in roll surface with
Compound interface can't be penetrated between aluminium, aluminum and other intermetallic combined strength bination will not be destroyed, use work roll to add profit
The antiseized means of lubricating oil are also feasible.But for aluminum base preparation material, use this work roll to add lubrication
The antiseized mode of oil is then fatal, and reason is: as in figure 2 it is shown, the temperature that lubricating oil is formed in the Rolling compund process
Under pressure condition, it is very easy to be treated by aluminium base 31 and other metal 33 side of preparation from the roll surface of work roll 32
(as shown by arrows in FIG.) is penetrated in position, thus causes the compound interface of neighbouring fresh clean to be formed, and causes and is combined unsuccessfully.
Visible, can guarantee that again while how overcoming anti-aluminum roll banding that aluminum is roll-bonding method with the contradiction of other intermetallic combined strength bination
The technical barrier that must solve when preparing aluminum base preparation metal.Fig. 3 and Fig. 4 schematically illustrates the present invention, and some are implemented
The structure of the local oiling antiseized aluminum device that example uses, in figure, 31 is aluminium base, and 32 is work roll, and 33 is that other metal is (easy
Welding metal strips), 34 is oil baffle, and 36 is oiling station.As shown in Figure 3 and Figure 4, this local oiling antiseized aluminum device includes being coated with
Oil device 36 and oil baffle 34, oil baffle 34 is in rectangular bulk, with certain pressure (available compressed air or hydraulic pressure adjust)
Tangent with work roll 32 surface of revolution contacting, and its position is relative with easy welding metal strips 33, oiling station 36 is arranged on
Between oil baffle 34 and work roll 32 outlet.Oil baffle 34 determines oil-blocking action district along the corresponding size of roll surface length direction
The size in territory, this size is larger than the width of easy welding metal strips 33, so can ensure that roll rotates from band outlet and reply
To rolling porch, roll surface is through oiling station 36 local oiling and oil baffle 34 oil-blocking action, roll surface and aluminium base
The positions of 31 contacts have remained oil lubrication and not roll banding, in guaranteeing the groove that oil does not penetrates into again aluminium base 31 simultaneously, because of
And realize aluminum and be combined with the firm of easy welding metal strips 33.The end preferably contacted with work roll 32 at oil baffle 34 is arranged by force
Power oil absorbent material.
During continuous annealing, band temperature retention time is typically below 5 minutes, and the long term annealing more than 5 minutes belongs at present
Discontinuous annealing process (as with bell furnace or well furnace), it is well known that discontinuous annealing production efficiency is low and very
The rare band good to stable performance concordance, more fatal is the longer easy fragility forming destruction combined strength bination of annealing time
Intermetallic compounds layer.Having and borrow in this, manufacture method of the present invention have employed continuous bright annealing technique in step s 2.Continuous light
Bright annealing can realize aluminum-base composite sheet metal strip efficiently, stable performance, produce to any surface finish, wherein, annealing temperature and annealing
The selection emphasis of speed considers: 1) guaranteeing that the brittle intermetallic layer without destroying combined strength bination occurs, now temperature is unsuitable
Too high, speed is unsuitable too low；2) meet and while constituent element entirely reaches bating effect, realize energy-efficient production, improve temperature easy
Reach full bating effect but power consumption can increase accordingly；3) thickness of strip size, the thinnest then annealing speed is the fastest, and vice versa.Combine
Close above principle and select concrete suitable parameter and annealing.
The composition metal band of nickel (or copper), in step s 2, the technique of continuous bright annealing is inlayed for aluminium based metal
Condition be reducing atmosphere or inert atmosphere, annealing temperature be 500～630 DEG C, annealing speed be 0.5～6 m/min.
About the rolling process in step S2, it is different from the rolling between twice annealing of the conventional single metal.Single metal
The deformation rate of the rolling between twice annealing is general all more than 60%, and aluminium based metal inlays twice of nickel composite metal band
Between annealing, rolling deformation rate is no more than 50%, otherwise there is bigger deformation mechanics performance difference with nickel, along with passage due to aluminum
Between the increase of rolling deformation rate be very easy to cause residual stress to increase until rolling crack, the phenomenon such as composite layered.
Surface degreasing, passivation and drying and processing in step S4 is all the necessary operation in lug preparation process, Er Qieqi
Technique is the most highly developed, does not repeats them here.
After prepared lug monomer, a plurality of lug monomers are arranged, the most side by side and with interval at lug
Correct position heat-sealing the patch tab, the i.e. row's of preparing formula lug on the aluminum surface (i.e. without nickel or the position of copper) of monomer.For aluminum base
Inlaying the composite metal structures lug of nickel, selecting at aluminum surface heat sealing label tab is to use nickel amount in lug to save as far as possible.
For the composite metal structures lug of aluminum base damascene copper, selecting at aluminum surface heat sealing label tab is in order to avoid heat seal process will
Copper aoxidizes.
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
Embodiment 1: Fig. 5 schematically illustrates a kind of aluminum base exempting to turn weldering and inlays row's formula pole of nickel composite metal structure
Ear, can be used for lithium-ion electric core.Fig. 6 shows its A-A cross-section structure.As it can be seen in figures 5 and 6, this row formula lug is by a plurality of poles
Ear monomer 1 is arranged the most side by side and with interval, by welding near easy on the aluminium substrate 11 of a plurality of lug monomers 1
Connect hot paste conjunction tab 2 at layer 12 to be linked as a whole by these a plurality of lug monomers 1 and prepare.Wherein, lug monomer 1 in
Strip lamellar, a size of 0.1 mm (thick) × 4 mm(width) × 70 mm(length), this lug monomer 1 includes the aluminium substrate 11 of strip
And it being arranged at the easy weld part of this aluminium substrate 11 one end, the two sides of aluminium substrate 11 one end is respectively provided with recess 13, described easy welding
Portion is the easy weld layer (nickel dam) 12 that rolling is combined in this recess 13, the sidepiece of easy weld layer 12 and whole bottom and aluminium substrate 11
Recess 13 form physics metallurgy layer, the thickness of the easy weld layer 12 of every accounts for the 25% of lug monomer 1 gross thickness.Tab 2 is wide
4mm, thick 0.1mm.During use, one end of the compound easy weld layer 12 of lug is exposed outside battery core aluminium plastic packaging bag, the length exposed
It is about 16mm.Its preparation method is described below.
S1, the selection trade mark 1060, thick 1.5mm, the aluminium strip of wide 150mm, purity is 99.95%, thick 0.3mm, the height of wide 30mm
Pure nickel band, is combined as raw material.Along the long side direction of aluminium strip, all dig in the centre position on aluminium strip two sides deep 0.3 mm,
The rectangular channel of wide 30 mm.High-purity nickel strap is embedded in the rectangular channel on aluminium strip surface, rolling, is combined into aluminum base and inlays nickel strap
Composition metal band.Rolling compund temperature is 150 DEG C, and rolling exit thickness is 0.75mm (i.e. rolling deformation rate is 50%).Rolling
Operation have employed the antiseized aluminum measure of local oiling, so that while antiseized aluminum, it is to avoid oil is from treating preparation nickel and aluminum
Side recombination site penetrate into interface, it is ensured that aluminium strip and nickel strap are firmly combined, and obtain aluminum base and inlay nickel strap composition metal band.
S2, aluminum base is inlayed nickel strap composition metal band continuous bright annealing and rolling so that it is meet final lug monomer
Hardness and thickness requirement.Band after compound is passed through insulation 600 DEG C, the continuous bright annealing of annealing speed 3 ms/min, so
After carry out continuous bright annealing again through 5 passes to 0.4mm, proceed rolling.Continuous bright annealing is (altogether the most repeatedly
3 times) and multi-pass rolling, during the parameter of continuous bright annealing be: be incubated 600 DEG C, annealing speed 5 ms/min, finish to gauge
Carrying out continuous bright annealing to finished size 0.1mm, finished product continuous bright annealing parameter is: be incubated 600 DEG C, annealing speed 6
M/min.So composite strip had both met the performance requirement that hardness is soft state of final lug, met again the final institute of lug
Need the requirement of gauge.
S3, shear according to the length and width of lug monomer, prepare lug monomer.Aluminum base preparation after finished products
Band is sheared with the most longitudinally (i.e. the long side direction of aluminium strip) cut mode, obtains the arrowband of two wide 70mm, this narrow-band feature
For: substrate is aluminum, and is all inlaid with the nickel dam 12 that width is 15mm in the one end on aluminium substrate 11 two sides along strip width direction, nickel
The side of layer 12 and whole bottom surface and aluminum strong bonded, nickel dam 12 thickness of every accounts for total thickness ratio about 25%.Such arrowband is full
The foot requirement of lug final Len req size.Then, with accurate-shearing machine, arrowband is carried out lateral shear, obtain a plurality of width
Degree is the lug monomer of 4mm.
The lug monomer that S4, Transverse Shear cut sends into ultrasonic waves for cleaning degreasing tank oil removing, passivation liquid bath passivation, finally sends into
Temperature is that 80 DEG C of drying bakers carry out drying and processing.
S5, on aluminium substrate two surface of lug monomer without nickel position (exposing at the about 16mm of termination away from cell polar ear) seal
0.1mm(is thick for patch) tab 2 of × 4mm (wide), thus prepare high-quality and arrange formula lug.
Embodiment 2: a kind of row's formula lug exempting to turn the aluminum base damascene copper composite metal structures of weldering, can be used for lithium-ion electric
Core, its structure is as it can be seen in figures 5 and 6, arranged the most side by side and with interval by a plurality of lug monomers 1, by multiple
On the aluminium substrate 11 of several lug monomers 1, at easy weld layer 12, these a plurality of lug monomers 1 are linked by hot paste conjunction tab 2
It is that an entirety prepares.Wherein, lug monomer 1 in strip lamellar, a size of 0.2 mm (thick) × 5 mm(width) × 60 mm
(length), this lug monomer 1 includes the aluminium substrate 11 of strip and is arranged at the easy weld part of this aluminium substrate 11 one end, aluminium substrate 11
The two sides of one end is respectively provided with recess 13, and described easy weld part is the easy weld layer (layers of copper) 12 that rolling is combined in this recess 13, easily
The recess 13 of the sidepiece of weld layer 12 and whole bottom and aluminium substrate 11 forms physics metallurgy layer, the thickness of the easy weld layer 12 of every
Degree accounts for the 25% of lug monomer 1 gross thickness.The wide 4mm of tab 2, thick 0.1mm.During use, the one of the compound easy weld layer 12 of lug
End exposes outside battery core aluminium plastic packaging bag, and the length exposed is about 15mm.Its preparation method is described below.
S1, the selection trade mark 1060, thick 2.0mm, the aluminium strip of wide 130mm, trade mark C10200, thick 0.3mm, the red copper of wide 26mm
Band, is combined as raw material.Along the long side direction of aluminium strip, all dig deep 0.3 mm, wide by 26 in the centre position on aluminium strip two sides
The rectangular channel of mm.Copper belt is embedded in the rectangular channel on aluminium strip surface, rolling, is combined into aluminum base and inlays the composition metal of copper strips
Band.Rolling compund temperature is 100 DEG C, and rolling exit thickness is 0.60mm (i.e. rolling deformation rate is 70%).Rolling process uses
The antiseized aluminum measure of local oiling, so that while antiseized aluminum, it is to avoid oil is from treating that preparation copper is multiple with the side of aluminum
Close infiltration interface, position, it is ensured that aluminium strip and copper strips are firmly combined, and obtain aluminum base and inlay copper strips composite metal belt material.
S2, aluminum base is inlayed copper strips composite metal belt material continuous bright annealing and rolling so that it is meet final lug monomer
Hardness and thickness requirement.Band after compound is passed through insulation 550 DEG C, the continuous bright annealing of annealing speed 3 ms/min, so
After carry out finished product continuous bright annealing through 8 passes to 0.2mm, finished product continuous bright annealing parameter is: be incubated 600 DEG C,
Annealing speed 6 ms/min.So composite strip had both met the performance requirement that hardness is soft state of final lug, met again
The requirement of lug final desired thickness size.
S3, shear according to the length and width of lug monomer, prepare lug monomer.Aluminum base preparation after finished products
Band is sheared in double longitudinal shear mode, obtains the arrowband of two wide 60mm, and this narrow-band feature is: substrate is aluminum, and along band
Material width is all inlaid with the layers of copper 12 that width is 13mm, the whole bottom surface of layers of copper 12 and side in the one end on aluminium substrate 11 two sides
Face and aluminum strong bonded, layers of copper 12 thickness of every accounts for total thickness ratio about 25%.It is finally required long that such arrowband meets lug
The requirement of degree size.Then, with accurate-shearing machine, arrowband is carried out lateral shear, prepare the lug monomer that a plurality of width is 5mm.
The lug monomer that S4, Transverse Shear cut sends into ultrasonic waves for cleaning degreasing tank oil removing, passivation liquid bath passivation, finally sends into
Temperature is that 80 DEG C of drying bakers carry out drying and processing.
On aluminium substrate two surface of lug monomer, the position (exposing at the about 15mm of termination away from cell polar ear) without copper seals patch
0.1mm(is thick) tab 2 of × 4mm (wide), thus prepare high-quality and arrange formula lug.
Embodiment 3: a kind of row's formula lug exempting to turn the aluminum base damascene copper composite metal structures of weldering, can be used for lithium-ion electric
Core, its structure as shown in Figure 7 and Figure 8, is arranged the most side by side and with interval by a plurality of lug monomers 4, by
On the aluminium substrate 41 of a plurality of lug monomers 4, at easy weld layer 42, hot paste closes tab 2 by these a plurality of lug monomers 4 even
Become an entirety and prepare.Wherein, lug monomer 4 in strip lamellar, a size of 0.2 mm (thick) × 5 mm(width) × 120
Mm(length), this lug monomer 4 includes the aluminium substrate 41 of strip and is arranged at the easy weld part in this aluminium substrate 41 centre position, aluminum
The two sides in substrate 41 centre position is respectively provided with recess 43, and described easy weld part is the easy weld layer that rolling is combined in this recess 43
The recess 43 of (layers of copper) 42, the sidepiece of easy weld layer 42 and whole bottom and aluminium substrate 41 forms physics metallurgy layer, every easy
The thickness of weld layer 42 accounts for the 25% of lug monomer 4 gross thickness.The wide 4mm of tab 2, thick 0.1mm.When being specifically assembled to battery core, need
Row's formula lug of structure as shown in Figure 7 is cut (being i.e. divided into two) along its centrage (dotted line in Fig. 7), the most just
Applied effect as repeated faithfully in Example 2.
The preparation process of embodiment 3 row's formula lug is substantially the same manner as Example 2, and its difference is cutting operation (step S3)
Difference, in example 2, cutting operation includes shearing aluminum base preparation band in double longitudinal shear mode；And in reality
Executing in example 3, cutting operation does not include shearing aluminum base preparation band in double longitudinal shear mode.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned enforcement
Example, all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that, for the art
Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications are also
Should be regarded as protection scope of the present invention.
Claims (2)
1. exempt to turn the manufacture method of the preparation metal structure lug monomer of weldering, it is characterised in that comprise the following steps:
S1, easy welding metal strips is embedded in the groove on aluminium strip surface, rolling, is combined into aluminum base and inlays answering of easy welding metal strips
Close sheet metal strip；Described easy welding metal strips is nickel strap or the copper strips that purity is not less than 99.80%, when described easy welding metal strips
For purity not less than 99.80% nickel strap time, described rolling is carried out at room temperature to 350 DEG C, rolling deformation rate be 30%～
70%, and the operation of rolling take the antiseized aluminum measure of local oiling；When described easy welding metal strips is copper strips, described in roll
System is carried out at room temperature to 300 DEG C, and rolling deformation rate is 30%～takes the antiseized of local oiling in 70%, and the operation of rolling
Aluminum measure；The antiseized aluminum measure of described local oiling includes arranging oiling station and oil baffle, and oil baffle is with certain pressure and work
Making the contact of roller rotational plane tangent, and its position is relative with easy welding metal strips, oil baffle is along work roll roll surface length
The width being slightly larger in dimension than easy welding metal strips in direction, the end that oil baffle contacts with work roll arranges strength oil absorbent material,
Oiling station is arranged between oil baffle and the outlet of work roll, each work roll corresponding with two oiling stations and this two
Individual oiling station is arranged along the axially spaced-apart of this work roll；
S2, to described composition metal band continuous bright annealing and rolling so that it is meet final lug monomer hardness and thickness and want
Ask, the process conditions of continuous bright annealing be reducing atmosphere or inert atmosphere, annealing temperature be 500～630 DEG C, annealing speed be
0.5～6 m/min, and the deformation rate of the rolling carried out between twice annealing is not more than 50%；
S3, shear according to the length and width of lug monomer, prepare lug monomer；
S4, lug monomer is carried out surface degreasing, passivation and drying and processing.
2. exempt to turn the preparation metal structure lug monomer of weldering, it is characterised in that this lug monomer uses described in claim 1
Method prepares, and this lug monomer is strip lamellar, and integral thickness is 0.05～0.3mm, and this lug monomer includes the aluminum base of strip
Sheet and be arranged at the easy weld part in this aluminium substrate one end or centre position, described aluminium substrate one end or at least the one of centre position
Mask has recess, described easy weld part to be the easy weld layers that rolling is combined in described recess, the sidepiece of easy weld layer and the whole end
Portion forms physics metallurgy layer with the recess of aluminium substrate, and the thickness of easy weld layer accounts for the 1%～95% of lug monomer gross thickness, this pole
Ear monomer has the part of easy weld layer and does not has the thickness of part of easy weld layer equal, and described easy weld layer is that purity is not less than
The nickel dam of 99.80% or layers of copper.
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| CN201310015758.8A CN103928651B (en) | 2013-01-16 | 2013-01-16 | Preparation metal structure lug monomer, row's formula lug and manufacture method |
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| CN201310015758.8A CN103928651B (en) | 2013-01-16 | 2013-01-16 | Preparation metal structure lug monomer, row's formula lug and manufacture method |
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Families Citing this family (9)
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| CN104795529A (en) * | 2015-04-15 | 2015-07-22 | 谢振华 | Lithium batterypositive ear and processing method thereof |
| CN105552292B (en) * | 2016-01-31 | 2018-07-03 | 宜兴市惠华复合材料有限公司 | A kind of production technology of lithium battery pole ear |
| CN105810874B (en) * | 2016-04-21 | 2018-11-09 | 格远电子科技（上海）有限公司 | A kind of preparation method of lithium battery overload self-shield lug |
| WO2018123865A1 (en) * | 2016-12-27 | 2018-07-05 | 日立金属株式会社 | Lead material for negative electrodes and method for producing lead material for negative electrodes |
| CN106803564B (en) * | 2017-02-16 | 2023-07-07 | 广西卓能新能源科技有限公司 | Pole piece tape splicing tool and pole piece tape splicing method |
| CN108172748A (en) * | 2017-12-30 | 2018-06-15 | 惠州亿纬锂能股份有限公司 | Lug and manufacturing method, the lithium battery and manufacturing method with the lug |
| CN109346657A (en) * | 2018-09-18 | 2019-02-15 | 深圳市鑫越新材料科技有限公司 | A kind of lightweight aluminium nickel composite bus-bar wire processing method |
| CN109967437A (en) * | 2018-11-26 | 2019-07-05 | 深圳市德惠电池材料有限公司 | A kind of easy welding electrode connection sheet blank treatment process |
| CN112072432B (en) * | 2020-09-17 | 2021-12-14 | 松山湖材料实验室 | Copper flexible connection structure, lithium ion battery cathode copper tab structure and preparation method |
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