CN103928651A - Pole lug single body with embedded composite metal structure, row type pole lug, and manufacturing method of pole lug single body - Google Patents
Pole lug single body with embedded composite metal structure, row type pole lug, and manufacturing method of pole lug single body Download PDFInfo
- Publication number
- CN103928651A CN103928651A CN201310015758.8A CN201310015758A CN103928651A CN 103928651 A CN103928651 A CN 103928651A CN 201310015758 A CN201310015758 A CN 201310015758A CN 103928651 A CN103928651 A CN 103928651A
- Authority
- CN
- China
- Prior art keywords
- aluminium
- lug
- rolling
- pole lug
- monomer
- 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
Classifications
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Metal Rolling (AREA)
Abstract
The invention relates to a pole lug single body with an embedded composite metal structure, a row type pole lug, and a manufacturing method of the pole lug single body. The pole lug single body is in a strip sheet shape, the whole thickness is 0.05-0.3mm, and the pole lug single body comprises a strip-shaped aluminium substrate and an easily-welded part at one end or the middle position of the aluminium substrate, wherein the easily-welded part is an easily-welded layer rolled and combined with a concave part of the aluminium substrate, the side part and the whole bottom part of the easily-welded layer and the concave part of the aluminum substrate form a physical metallurgy layer, and the thickness of the easily-welded layer is 1-95% of the total thickness of the pole lug single body. The row type pole lug is formed by combining a plurality of the pole lug single bodies through pole lug glue. The manufacturing method comprises: inlaying an easily-welded metal belt in a groove on an aluminium belt surface, and rolling; performing continuous bright annealing and rolling on the rolled composite metal belt; shearing to obtain the pole lug single body; and performing surface de-oiling, passivation and drying processing on the pole lug single body. The pole lug is high in combination strength and small in contact resistance. The method is low in cost and easy to realize.
Description
Technical field
The present invention relates to battery pole ear, more particularly, relate to polymer, liquid flexible packing, lithium ion battery with hard shell battery core lug, and relate to its manufacture method.
Background technology
At present; polymer, liquid flexible packing, lithium ion battery with hard shell battery core mostly adopt aluminium pole ears with anode ear; as everyone knows, lug need to weld with battery management route protection plate or electric wire, but tin on aluminium and baffle or electric wire cannot be realized good seam.For head it off, one section of nickel sheet is turned the exposed junction that is welded to aluminium pole ears with overlapping mode by most Laser Welding or the ultra-sonic welded of adopting of existing process program, is connected by turning the nickel sheet welding with the tin on route protection plate or electric wire again.This weldering overlapping mode that turns brings again following four aspect problems: the concavo-convex vestige that 1, laser or ultrasonic solder joint form affects the outward appearance of battery core; 2, compared with the superimposed gross area that the weldering node real contact area between aluminium and nickel forms with overlap joint between both (aluminium and nickel), ratio is less, means that contact resistance is unfavorable for that greatly battery core internal resistance reduces; 3, the increase that turns welder's order means that the production cost that battery core is made increases, and quality unsteadiness increases simultaneously; Near lap-joint, very easily there is rosin joint, the sealing-off phenomenon that even fractures in the lug that 4, turns postwelding.
Except above-mentioned aluminium pole ears turns weldering nickel sheet mode, several other technical schemes are also developed both at home and abroad in same field.Mainly contain following several large class.
One, aluminium pole ears plated nickel type.As Chinese invention patent application 201010241631.4,200810236321.6,201110308950.7 all belongs to this type of, they can save the operation that turns weldering nickel, but plating technic exist on the one hand electroplate or electroless plating technology the coating of intrinsic existence be combined serious problems unreliable, insecure, the final scolding tin effect of the partially thin impact of coating with base material; In plating process, a large amount of chemical waste fluids uses and discharge meeting pollutes difficulty to surrounding enviroment on the other hand, and therefore such technical scheme does not really obtain applying in batches.
Two, bridging type turns bit copper, as Chinese utility model patent 201120357203.8, exists equally above-mentioned bridging type to turn the defect of weldering nickel.
Three, form integrated at the superimposed position of al and ni hot melt material.As, Chinese invention patent application 200510122316.9 adopts the hot melt material of organic polymer type that aluminium pole ears and nickel are carried out to packaging type fusion in superimposed position, in fact this mode can only ensure the fusion of hot melt material itself, and the al and ni of hot melt the inside is owing to there is no mutual plastic deformation thereby being difficult to really form mutual strong bonded, aluminium nickel contact resistance is between the two obviously very large, cause overall battery core internal resistance to increase, and destroyed the overall aesthetics of battery product in the outstanding hot melt piece profile of battery core anode ear bared end.
Four, special-shaped compound metal type lug.US Patent No. 2011/0274964 provides a kind of special-shaped compound metal type lug solution, this scheme is to produce aluminium/copper composite metal material (as shown in a part in Fig. 1) of the composite construction of appearing by composite algorithm, adopt etching, planing, mechanical-moulded mode to remove local copper layer segment again, finally prepare special-shaped compound metal type lug (as shown in the b part in Fig. 1), the part that in Fig. 1, dotted line represents is the copper layer of removing.This lug one end (in battery core packaging bag) is aluminium, and the other end (exposing battery core part) is on the basis of aluminium base, to be compounded with one deck copper material welding with wiring board for improving, that is, lug two-end thickness difference and material are also different.But lithium ion cell polar ear integral thickness is generally in 0.05～0.3mm scope, the realizability of the obvious copper composite bed that will accurately remove again local location on the basis of so thin face sandwich is very little, cost is very high, thereby and unrealistic.
Summary of the invention
The object of this invention is to provide a kind of composite metal structures lug and manufacture method thereof, to solve, the above-mentioned contact resistance that existing lug exists is large, 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 its abundant professional standing and experience, through studying for a long period of time and putting into practice, propose innovatively to adopt roll-bonding method to prepare the process program of aluminium base preparation structural metallic materials, and then proposed technical scheme of the present invention.
The invention provides a kind of preparation metal structure lug monomer of exempting to turn weldering, this lug monomer is rectangular sheet, integral thickness is 0.05～0.3mm, this lug monomer comprises the aluminium substrate of strip and is arranged at the easy weld part in this aluminium substrate one end or centre position, wherein, at least one mask in described aluminium substrate one end or centre position has recess, described easy weld part is the easy weld layer that rolling is combined in described recess, easily the sidepiece of weld layer and the recess of whole bottom and aluminium substrate form physics metallurgy layer, easily the thickness of weld layer accounts for 1%～95% of lug monomer gross thickness, this lug monomer has the part of easy weld layer and does not have the thickness of the part of easy weld layer to equate.
Preferably, described easy weld layer is that purity is not less than 99.80% nickel dam.
Preferably, described easy weld layer is copper layer.
The present invention also provides a kind of row's formula lug, it comprises a plurality of above-mentioned lug monomers, a plurality of lug monomer broad wayss arrange side by side and with interval, close tab these a plurality of lug monomers are linked as a whole on the aluminium substrate of a plurality of lug monomers near easy weld layer place hot paste.
The present invention also provides a kind of manufacture method of exempting from the preparation metal structure lug monomer that turns weldering, and the method comprises the following steps:
S1, easy weld metal band is embedded in the groove on aluminium strip surface, rolling, is combined into the aluminium base composition metal band of inlaying easy weld metal band;
S2, to described composition metal band continuous bright annealing and rolling, make it meet final lug monomer hardness and thickness requirement;
S3, shear according to the length of lug monomer and width, make lug monomer;
S4, lug monomer is carried out to surface degreasing, passivation and drying and processing.
Preferably, described easy weld metal band is that purity is not less than 99.80% nickel strap, and in step S1, described rolling is carried out at room temperature to 350 DEG C, and rolling deformation rate is 30%～70%, and in the operation of rolling, has taked antiseized aluminium measure.
Preferably, described easy weld metal band is copper strips, and in step S1, described rolling is carried out at room temperature to 300 DEG C, and rolling deformation rate is 30%～70%, and in the operation of rolling, has taked antiseized aluminium measure.
Preferably, in step S2, the process conditions of continuous bright annealing are that reducing atmosphere or inert atmosphere, annealing temperature are that 500～630 DEG C, annealing speed are 0.5～6 m/min, and the deformation rate of the rolling of carrying out between twice annealing is not more than 50%.
Preferably, described antiseized aluminium measure is local oiling, cooling, work roll surface is coated anti-stick coating and roller-cleaning device is cleaned at least one in four kinds of modes with water.
Preferably, the antiseized aluminium measure of local oiling comprises oiling station and oil baffle is set, oil baffle contacts with work roll surface of revolution is tangent with certain pressure, and its position is relative with easy weld metal band, and oiling station is arranged between oil baffle and the outlet of work roll.
The easy weld layer of lug of the present invention and aluminium substrate adopt rolling mill practice to be complex as a whole, easily the side of weld layer and the recess of whole bottom surface and aluminium substrate form physics metallurgy layer, not only make the two securely in conjunction with as a whole, and bond strength is high, good reliability, and contact resistance is little.Meanwhile, it does not have the hot melt material etc. of pad, coated use, and integral thickness is identical, and surfacing can not affect the attractive in appearance of battery.
Manufacture method process cost of the present invention is low, and is easy to realize.Compared with adopting the prior art of plating technic, realize environmental protection production.
Brief description of the drawings
Fig. 1 is the schematic diagram of the preparation process of existing special-shaped compound metal type lug;
Fig. 2 is the aluminium base schematic diagram of inlaying other metal composite process in overall work lubricating rollers situation;
Fig. 3 is the side-looking structural representation of the antiseized aluminium device of the local oiling of some embodiments of the invention;
Fig. 4 is the structural representation of facing of the antiseized aluminium device of the local oiling of Fig. 3;
Fig. 5 is the structural representation of row's formula lug of making of some embodiments of the invention;
Fig. 6 is that the A-A of Fig. 5 is to cutaway view;
Fig. 7 is the structural representation of row's formula lug of making of other embodiment of the present invention;
Fig. 8 is that the B-B of Fig. 7 is to cutaway view.
Embodiment
The preparation metal structure lug of exempting to turn weldering of the present invention's structure, can be used for lithium-ion electric core.The base material of this preparation metal structure lug is aluminium, and inlay easy weld layer (as nickel, copper etc.) at two sides or the one side in aluminium base one end or centre position, aluminium base with easy weld layer in side and bottom surface form physics metallurgy layer strong bonded, easily to account for lug gross thickness ratio can be 1%～95% to bonding pad.Lug gross thickness can be 0.05～0.3mm.
Its manufacture method is as follows: S1, easy weld metal band is embedded in the groove on aluminium strip surface, rolling, is combined into the aluminium base composition metal band of inlaying easy weld metal band; S2, to described composition metal band continuous bright annealing and rolling, make it meet final lug monomer hardness and thickness requirement; S3, shear according to the length of lug monomer and width, make lug monomer; S4, lug monomer is carried out to surface degreasing, passivation and drying and processing.
When aluminium and other common metal (as copper, nickel etc.) combination, exist physical property difference greatly, easily to form many factors that are unfavorable for preparing composition metal product such as intermetallic compound, must consider and be solved.According to material foundation theory: metal purity is higher, and recrystallization softening temperature is lower, and vice versa.In the time selecting nickel strap to make easy welding band, in order to ensure the strong bonded of nickel sheet and aluminium flake, the purity of nickel strap must ensure the percentage by weight at 99.80%() more than, the complete softening temperature of its nickel constituent element of continuous bright annealing after now compound, lower than 660 DEG C of the fusing points of aluminium, makes nickel and aluminium constituent element in overall composition metal, can realize simultaneously softening effect completely.When nickel material purity is 95%～99.79% time, in cannot realizing composition metal in follow-up continuous bright softening annealing process and while being machined to finished product, constituent element al and ni material reaches the effect of complete soft state simultaneously, is to make their strong bonded necessary and al and ni reaches complete soft state simultaneously.
In the time selecting nickel strap to make easy welding band, in the composite technique for rolling of step S1, if excess Temperature not only easily makes aluminium roll banding cause compound failure, and by compound layer between the brittle metal generating considerable damage combined strength bination between aluminium/nickel interface; Meanwhile, may not reach critical composite deformation rate and cause compound failure if rolling composite deformation rate is too low, if rolling composite deformation rate is too high, cause residual stress between the two to destroy combined strength bination because aluminium nickel deformation mechanics performance difference is excessive.Inventor, through deep theoretical research and experiment, is defined as the process conditions of rolling in step S1: at room temperature to 350 DEG C, carry out, rolling deformation rate is 30%～70%, and, in order to prevent the sticky aluminium of Kun of working in the operation of rolling, also take antiseized aluminium measure.
In the time selecting copper strips to make easy welding band, because the recrystallization between copper/aluminium (softening) temperature contrast is little far beyond aluminium/nickel, therefore the purity of copper material is not had to particular/special requirement when compound pairing.Accordingly, in step S1, the process conditions of rolling are defined as: at room temperature to 300 DEG C, carry out, rolling deformation rate is 30%～70%, and, in order to prevent the sticky aluminium of Kun of working in the operation of rolling, also take antiseized aluminium measure.
Above-mentioned antiseized aluminium measure, can adopt local oiling, the coated antiseized aluminized coating of cooling, work roll surface, roller-cleaning device to clean any one in four kinds of modes with water, also can adopt their combination.The antiseized aluminium measure that it is pointed out that local oiling is inventor's a innovation.For aluminium rolling, on whole work roll face apply oil antiseized be conventional means.Other metal material of rolling carry out compound aluminium and to(for) whole face is compound, because being only present between roll surface and aluminium, lubricating oil can't infiltrate compound interface, can not destroy aluminium and other intermetallic combined strength bination, it is also feasible adopting the antiseized means of work roll apply oil.But for the aluminium base preparation material of rolling, it is fatal adopting the antiseized mode of this work roll apply oil, reason is: as shown in Figure 2, under the temperature, pressure condition that lubricating oil forms in rolling recombination process, be very easy to treat by aluminium base 31 and other metal 33 from the roll surface of work roll 32 the lateral location infiltration (as shown by arrows in FIG.) of preparation, thereby near causing, fresh clean compound interface cannot form, and causes compound failure.Visible, the contradiction that can ensure again aluminium and other intermetallic combined strength bination when how overcoming anti-aluminium roll banding is the technical barrier that roll-bonding method must solve while preparing aluminium base preparation metal.Fig. 3 and Fig. 4 have schematically shown the structure of the antiseized aluminium device of local oiling of some embodiments of the invention employings, and in figure, 31 is aluminium base, and 32 is work roll, and 33 is other metal (easily weld metal band), and 34 is oil baffle, and 36 is oiling station.As shown in Figure 3 and Figure 4, the antiseized aluminium device of this part oiling comprises oiling station 36 and oil baffle 34, oil baffle 34 is rectangular bulk, with certain pressure (available compressed air or hydraulic pressure adjustment) and tangent contact of work roll 32 surface of revolution, and its position is with easily weld metal band 33 is relative, and oiling station 36 is arranged between oil baffle 34 and work roll 32 outlets.Oil baffle 34 has determined the size in oil-blocking action region along the corresponding size of roll surface length direction, this size is larger than the width of easy weld metal band 33, can ensure that like this roll returns back to the process of rolling porch from band outlet rotation, roll surface is through the local oiling of oiling station 36 and oil baffle 34 oil-blocking actions, the position that roll surface contacts with aluminium base 31 has remained oil lubrication and roll banding not, guarantee that oil can not penetrate in the groove of aluminium base 31 again simultaneously, thereby realize the firmly compound of aluminium and easy weld metal band 33.The end preferably contacting with work roll 32 at oil baffle 34 arranges powerful oil absorbent material.
When continuous annealing, band temperature retention time is generally below 5 minutes, exceed the long term annealing of 5 minutes and all belong at present discontinuous formula annealing process (as with bell furnace or well furnace), as everyone knows, discontinuous formula annealing production efficiency is low and be difficult to obtain the band of stable performance high conformity, and more fatal is annealing time is long easily forms compound layer between the brittle metal that destroys combined strength bination.Have and borrow in this, manufacture method of the present invention has adopted continuous bright annealing technique in step S2.Continuous bright annealing can realize that aluminum-base composite sheet metal strip is efficient, stable performance, produce to any surface finish, wherein, the selection emphasis of annealing temperature and annealing speed is considered: 1) guarantee to occur without compound layer between the brittle metal of destruction combined strength bination, now temperature is unsuitable too high, speed is unsuitable too low; 2) meet when constituent element all reaches bating effect and realize energy-efficient production, improve temperature and easily reach full bating effect but the corresponding increase of power consumption meeting; 3) thickness of strip size, thinner annealing speed is faster, and vice versa.Comprehensive above principle is selected concrete suitable parameter and annealing.
Inlay the composition metal band of nickel (or copper) for aluminium based metal, in step S2, the process conditions of continuous bright annealing are that reducing atmosphere or inert atmosphere, annealing temperature are that 500～630 DEG C, annealing speed are 0.5～6 m/min.
About the rolling process in step S2, be different from the rolling of conventional single metal between twice annealing.Single metal in the deformation rate of the rolling between twice annealing generally all more than 60%, and aluminium based metal is inlayed rolling deformation rate between the twice annealing of nickel composite metal band and should not be exceeded 50%, otherwise because aluminium and nickel exist larger deformation mechanics performance difference, along with the increase of rolling deformation rate between passage is 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, and its technique is also very ripe at present, does not repeat them here.
Making after lug monomer, a plurality of lug monomer broad wayss are arranged side by side and with interval, on the aluminium surface of lug monomer, tab, the i.e. row's of making formula lug are pasted in the correct position heat-sealing of the position of nickel or copper (without).For the aluminium base composite metal structures lug of inlaying nickel, to be chosen in aluminium surface heat sealing label tab and to be in order to save as far as possible and in lug, use nickel amount.For the composite metal structures lug of aluminium base damascene copper, being chosen in aluminium surface heat sealing label tab is for fear of heat seal process, copper to be oxidized.
Below in conjunction with drawings and Examples, the present invention is further described.
Embodiment 1: Fig. 5 has schematically shown a kind of aluminium base row's formula lug of inlaying nickel composite metal structure of exempting to turn weldering, can be used for lithium-ion electric core.Fig. 6 shows its A-A cross-section structure.As illustrated in Figures 5 and 6, this row formula lug is arranged side by side and with interval by a plurality of lug monomer 1 broad wayss, by closing tab 2 near easy weld layer 12 place's hot pastes on the aluminium substrate 11 at a plurality of lug monomers 1, these a plurality of lug monomers 1 is linked as a whole and is made.Wherein, lug monomer 1 is rectangular sheet, be of a size of 0.1 mm (thick) × 4 mm(wide) × 70 mm(length), this lug monomer 1 comprises the aluminium substrate 11 of strip and is arranged at the easy weld part of these aluminium substrate 11 one end, the two sides of aluminium substrate 11 one end all has recess 13, described easy weld part is the easy weld layer (nickel dam) 12 that rolling is combined in this recess 13, easily the sidepiece of weld layer 12 and the recess 13 of whole bottom and aluminium substrate 11 form physics metallurgy layer, and the thickness of the easy weld layer 12 of every accounts for 25% of lug monomer 1 gross thickness.The wide 4mm of tab 2, thick 0.1mm.When use, expose outside battery core aluminium plastic packaging bag one end of the compound easy weld layer 12 of lug, and the length of exposing is about 16mm.The following describes its preparation method.
S1, select that the aluminium strip of the trade mark 1060, thick 1.5mm, wide 150mm, purity are 99.95%, high-purity nickel strap of thick 0.3mm, wide 30mm, carry out compound as raw material.Along the long side direction of aluminium strip, all dig the rectangular channel of dark 0.3 mm, wide 30 mm in the centre position on aluminium strip two sides.High-purity nickel strap is embedded in the rectangular channel on aluminium strip surface, rolling, is combined into the aluminium base composition metal band of inlaying nickel strap.Rolling combined temp is 150 DEG C, and rolling exit thickness is 0.75mm (being that rolling deformation rate is 50%).Rolling process has adopted the antiseized aluminium measure of local oiling, to make in antiseized aluminium, avoids oil to infiltrate interface from the side recombination site for the treatment of preparation nickel and aluminium, ensures that aluminium strip and nickel strap are firmly compound, obtains the aluminium base nickel strap composition metal band of inlaying.
S2, inlay nickel strap composition metal band continuous bright annealing and rolling to aluminium base, make it meet final lug monomer hardness and thickness requirement.Continuous bright annealing by the band after compound through 600 DEG C of insulations, 3 ms/min of annealing speed, is then rolling to 0.4mm through 5 passages and carries out continuous bright annealing again, proceeds rolling.Continuous bright annealing (totally 3 times) and multi-pass rolling so repeatedly, in process, the parameter of continuous bright annealing is: be incubated 5 ms/min of 600 DEG C, annealing speed, after being finally rolled to finished size 0.1mm, carry out continuous bright annealing, finished product continuous bright annealing parameter is: be incubated 6 ms/min of 600 DEG C, annealing speed.Composite strip had both met the performance requirement that the hardness of final lug is soft state like this, had met again the requirement of the final desired thickness size of lug.
S3, shear according to the length of lug monomer and width, make lug monomer.Aluminium base preparation band after finished products is with half-and-half longitudinally (being the long side direction of aluminium strip) cut mode shearing, obtain the arrowband of two wide 70mm, this arrowband is characterized as: substrate is aluminium, and be 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, the side of nickel dam 12 and whole bottom surface and aluminium strong bonded, nickel dam 12 thickness of every account for total thickness ratio approximately 25%.Such arrowband has met the requirement of the final Len req size of lug.Then, arrowband is carried out to lateral shear with accurate-shearing machine, obtaining many width is the lug monomer of 4mm.
The lug monomer that S4, Transverse Shear cut is sent into the oil removing of Ultrasonic Cleaning degreasing tank, the passivation of passivation liquid bath, and finally sending into temperature is that 80 DEG C of drying bakers carry out drying and processing.
S5, to paste 0.1mm(on aluminium substrate two surfaces of lug monomer without position (exposing about 16mm place, termination apart from the cell polar ear) heat-sealing of nickel thick) tab 2 of × 4mm (wide), so just make high-quality row formula lug.
Embodiment 2: a kind of row's formula lug of exempting from the aluminium base damascene copper composite metal structures that turns weldering, can be used for lithium-ion electric core, its structure as illustrated in Figures 5 and 6, arranged side by side and with interval by a plurality of lug monomer 1 broad wayss, by closing tab 2 near easy weld layer 12 place's hot pastes on the aluminium substrate 11 at a plurality of lug monomers 1, these a plurality of lug monomers 1 are linked as a whole and made.Wherein, lug monomer 1 is rectangular sheet, be of a size of 0.2 mm (thick) × 5 mm(wide) × 60 mm(length), this lug monomer 1 comprises the aluminium substrate 11 of strip and is arranged at the easy weld part of these aluminium substrate 11 one end, the two sides of aluminium substrate 11 one end all has recess 13, described easy weld part is the easy weld layer (copper layer) 12 that rolling is combined in this recess 13, easily the sidepiece of weld layer 12 and the recess 13 of whole bottom and aluminium substrate 11 form physics metallurgy layer, and the thickness of the easy weld layer 12 of every accounts for 25% of lug monomer 1 gross thickness.The wide 4mm of tab 2, thick 0.1mm.When use, expose outside battery core aluminium plastic packaging bag one end of the compound easy weld layer 12 of lug, and the length of exposing is about 15mm.The following describes its preparation method.
The aluminium strip of S1, the selection trade mark 1060, thick 2.0mm, wide 130mm, the copper belt of trade mark C10200, thick 0.3mm, wide 26mm, carries out compound as raw material.Along the long side direction of aluminium strip, all dig the rectangular channel of dark 0.3 mm, wide 26 mm in the centre position on aluminium strip two sides.Copper belt is embedded in the rectangular channel on aluminium strip surface, rolling, is combined into the aluminium base composition metal band of inlaying copper strips.Rolling combined temp is 100 DEG C, and rolling exit thickness is 0.60mm (being that rolling deformation rate is 70%).Rolling process has adopted the antiseized aluminium measure of local oiling, to make in antiseized aluminium, avoids oil to infiltrate interface from the side recombination site for the treatment of preparation copper and aluminium, ensures that aluminium strip and copper strips are firmly compound, obtains the aluminium base copper strips composite metal belt material of inlaying.
S2, inlay copper strips composite metal belt material continuous bright annealing and rolling to aluminium base, make it meet final lug monomer hardness and thickness requirement.Continuous bright annealing by band after compound through 550 DEG C of insulations, 3 ms/min of annealing speed, is then rolling to 0.2mm through 8 passages and carries out finished product continuous bright annealing, and finished product continuous bright annealing parameter is: be incubated 6 ms/min of 600 DEG C, annealing speed.Composite strip had both met the performance requirement that the hardness of final lug is soft state like this, had met again the requirement of the final desired thickness size of lug.
S3, shear according to the length of lug monomer and width, make lug monomer.Aluminium base preparation band after finished products is sheared in double longitudinal shear mode, obtain the arrowband of two wide 60mm, this arrowband is characterized as: substrate is aluminium, and be all inlaid with the copper layer 12 that width is 13mm in the one end on aluminium substrate 11 two sides along strip width direction, the whole bottom surface of copper layer 12 and side and aluminium strong bonded, copper layer 12 thickness of every account for total thickness ratio approximately 25%.Such arrowband has met the requirement of the final Len req size of lug.Then, arrowband is carried out to lateral shear with accurate-shearing machine, making many width is the lug monomer of 5mm.
The lug monomer that S4, Transverse Shear cut is sent into the oil removing of Ultrasonic Cleaning degreasing tank, the passivation of passivation liquid bath, and finally sending into temperature is that 80 DEG C of drying bakers carry out drying and processing.
Paste 0.1mm(on aluminium substrate two surfaces of lug monomer without position (exposing about 15mm place, termination apart from the cell polar ear) heat-sealing of copper thick) tab 2 of × 4mm (wide), so just make high-quality row formula lug.
Embodiment 3: a kind of row's formula lug of exempting from the aluminium base damascene copper composite metal structures that turns weldering, can be used for lithium-ion electric core, its structure as shown in Figure 7 and Figure 8, arranged side by side and with interval by a plurality of lug monomer 4 broad wayss, by closing tab 2 near easy weld layer 42 place's hot pastes on the aluminium substrate 41 at a plurality of lug monomers 4, these a plurality of lug monomers 4 are linked as a whole and made.Wherein, lug monomer 4 is rectangular sheet, be of a size of 0.2 mm (thick) × 5 mm(wide) × 120 mm(length), this lug monomer 4 comprises the aluminium substrate 41 of strip and is arranged at the easy weld part in these aluminium substrate 41 centre positions, the two sides in aluminium substrate 41 centre positions all has recess 43, described easy weld part is the easy weld layer (copper layer) 42 that rolling is combined in this recess 43, easily the sidepiece of weld layer 42 and the recess 43 of whole bottom and aluminium substrate 41 form physics metallurgy layer, and the thickness of the easy weld layer 42 of every accounts for 25% of lug monomer 4 gross thickness.The wide 4mm of tab 2, thick 0.1mm.While being specifically assembled to battery core, row's formula lug of structure as shown in Figure 7 need to be cut to (being divided into two) along its center line (dotted line in Fig. 7), in fact just can obtain effect as repeated faithfully in Example 2.
Embodiment 3 arranges that the preparation process of formula lug is substantially the same manner as Example 2, and its difference is cutting operation (step S3) difference, and in embodiment 2, cutting operation comprises to be sheared in double longitudinal shear mode aluminium base preparation band; And in embodiment 3, cutting operation does not comprise to be sheared in double longitudinal shear mode aluminium base preparation band.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is also not only confined to above-described embodiment, and all technical schemes belonging under thinking of the present invention all belong to protection scope of the present invention.It should be pointed out that for those skilled in the art, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. exempt to turn the preparation metal structure lug monomer of weldering, be rectangular sheet, integral thickness is 0.05～0.3mm, this lug monomer comprises the aluminium substrate of strip and is arranged at the easy weld part in this aluminium substrate one end or centre position, it is characterized in that: at least one mask in described aluminium substrate one end or centre position has recess, described easy weld part is the easy weld layer that rolling is combined in described recess, easily the sidepiece of weld layer and the recess of whole bottom and aluminium substrate form physics metallurgy layer, easily the thickness of weld layer accounts for 1%～95% of lug monomer gross thickness, this lug monomer has the part of easy weld layer and does not have the thickness of the part of easy weld layer to equate.
2. the preparation metal structure lug monomer of exempting to turn weldering according to claim 1, is characterized in that: described easy weld layer is that purity is not less than 99.80% nickel dam.
3. the preparation metal structure lug monomer of exempting to turn weldering according to claim 1, is characterized in that: described easy weld layer is copper layer.
4. row's formula lug, it is characterized in that: comprise the lug monomer described in a plurality of claims 1 to 3 any one, a plurality of lug monomer broad wayss arrange side by side and with interval, close tab these a plurality of lug monomers are linked as a whole on the aluminium substrate of a plurality of lug monomers near easy weld layer place hot paste.
5. the manufacture method of exempting from the preparation metal structure lug monomer that turns weldering, is characterized in that, comprises the following steps:
S1, easy weld metal band is embedded in the groove on aluminium strip surface, rolling, is combined into the aluminium base composition metal band of inlaying easy weld metal band;
S2, to described composition metal band continuous bright annealing and rolling, make it meet final lug monomer hardness and thickness requirement;
S3, shear according to the length of lug monomer and width, make lug monomer;
S4, lug monomer is carried out to surface degreasing, passivation and drying and processing.
6. manufacture method according to claim 5, it is characterized in that: described easy weld metal band is that purity is not less than 99.80% nickel strap, in step S1, described rolling is carried out at room temperature to 350 DEG C, rolling deformation rate is 30%～70%, and in the operation of rolling, has taked antiseized aluminium measure.
7. manufacture method according to claim 5, is characterized in that: described easy weld metal band is copper strips, and in step S1, described rolling is carried out at room temperature to 300 DEG C, and rolling deformation rate is 30%～70%, and in the operation of rolling, has taked antiseized aluminium measure.
8. manufacture method according to claim 5, it is characterized in that: in step S2, the process conditions of continuous bright annealing are that reducing atmosphere or inert atmosphere, annealing temperature are that 500～630 DEG C, annealing speed are 0.5～6 m/min, and the deformation rate of the rolling of carrying out between twice annealing is not more than 50%.
9. according to the manufacture method described in claim 6 or 7, it is characterized in that: described antiseized aluminium measure is local oiling, cooling, work roll surface is coated anti-stick coating and roller-cleaning device is cleaned at least one in four kinds of modes with water.
10. manufacture method according to claim 9, it is characterized in that: the antiseized aluminium measure of local oiling comprises oiling station and oil baffle are set, oil baffle contacts with work roll surface of revolution is tangent with certain pressure, and its position is with easily weld metal band is relative, and oiling station is arranged between oil baffle and the outlet of work roll.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310015758.8A CN103928651B (en) | 2013-01-16 | 2013-01-16 | Preparation metal structure lug monomer, row's formula lug and manufacture method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310015758.8A CN103928651B (en) | 2013-01-16 | 2013-01-16 | Preparation metal structure lug monomer, row's formula lug and manufacture method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103928651A true CN103928651A (en) | 2014-07-16 |
| CN103928651B CN103928651B (en) | 2016-10-19 |
Family
ID=51146796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310015758.8A Expired - Fee Related CN103928651B (en) | 2013-01-16 | 2013-01-16 | Preparation metal structure lug monomer, row's formula lug and manufacture method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103928651B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104795529A (en) * | 2015-04-15 | 2015-07-22 | 谢振华 | Lithium batterypositive ear and processing method thereof |
| CN105552292A (en) * | 2016-01-31 | 2016-05-04 | 谢振华 | Production technology of lithium battery tab |
| CN105810874A (en) * | 2016-04-21 | 2016-07-27 | 格远电子科技（上海）有限公司 | Overload self-protection tabs for lithium battery and preparation method thereof |
| CN106803564A (en) * | 2017-02-16 | 2017-06-06 | 广西卓能新能源科技有限公司 | A kind of pole piece tape splicing instrument 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 |
| CN110140236A (en) * | 2016-12-27 | 2019-08-16 | 日立金属株式会社 | The manufacturing method of cathode lead material and cathode lead material |
| CN112072432A (en) * | 2020-09-17 | 2020-12-11 | 松山湖材料实验室 | Copper flexible connection structure, lithium ion battery cathode copper tab structure and preparation method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1586751A (en) * | 2004-08-27 | 2005-03-02 | 东北大学 | Hot roller rolling method for stainless steel/aluminium composite plate |
| CN101402100A (en) * | 2008-11-04 | 2009-04-08 | 安徽省鑫源达有色金属材料有限公司 | Method for producing nickel-aluminum composite belt |
| CN201259904Y (en) * | 2008-03-25 | 2009-06-17 | 谢振华 | Lithium-ion electric core and positive pole lug for manufacturing the electric core |
| CN201450079U (en) * | 2009-06-05 | 2010-05-05 | 珠海汉格能源科技有限公司 | Cylinder type lithium ion battery core |
| CN202218478U (en) * | 2011-08-30 | 2012-05-09 | 徐卓辉 | Composite metal connecting piece capable of being mounted on PCB |
| CN102625102A (en) * | 2011-12-22 | 2012-08-01 | 北京航空航天大学 | A rate-distortion mode selection method for H.264/SVC MGS coding |
| CN202523784U (en) * | 2012-02-24 | 2012-11-07 | 李震祺 | Positive pole lug of lithium battery |
-
2013
- 2013-01-16 CN CN201310015758.8A patent/CN103928651B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1586751A (en) * | 2004-08-27 | 2005-03-02 | 东北大学 | Hot roller rolling method for stainless steel/aluminium composite plate |
| CN201259904Y (en) * | 2008-03-25 | 2009-06-17 | 谢振华 | Lithium-ion electric core and positive pole lug for manufacturing the electric core |
| CN101402100A (en) * | 2008-11-04 | 2009-04-08 | 安徽省鑫源达有色金属材料有限公司 | Method for producing nickel-aluminum composite belt |
| CN201450079U (en) * | 2009-06-05 | 2010-05-05 | 珠海汉格能源科技有限公司 | Cylinder type lithium ion battery core |
| CN202218478U (en) * | 2011-08-30 | 2012-05-09 | 徐卓辉 | Composite metal connecting piece capable of being mounted on PCB |
| CN102625102A (en) * | 2011-12-22 | 2012-08-01 | 北京航空航天大学 | A rate-distortion mode selection method for H.264/SVC MGS coding |
| CN202523784U (en) * | 2012-02-24 | 2012-11-07 | 李震祺 | Positive pole lug of lithium battery |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104795529A (en) * | 2015-04-15 | 2015-07-22 | 谢振华 | Lithium batterypositive ear and processing method thereof |
| CN105552292A (en) * | 2016-01-31 | 2016-05-04 | 谢振华 | Production technology of lithium battery tab |
| 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 |
| CN105810874A (en) * | 2016-04-21 | 2016-07-27 | 格远电子科技（上海）有限公司 | Overload self-protection tabs for lithium battery and preparation method thereof |
| CN110140236A (en) * | 2016-12-27 | 2019-08-16 | 日立金属株式会社 | The manufacturing method of cathode lead material and cathode lead material |
| CN106803564A (en) * | 2017-02-16 | 2017-06-06 | 广西卓能新能源科技有限公司 | A kind of pole piece tape splicing instrument and pole piece tape splicing method |
| 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 |
| CN112072432A (en) * | 2020-09-17 | 2020-12-11 | 松山湖材料实验室 | Copper flexible connection structure, lithium ion battery cathode copper tab structure and preparation method |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103928651B (en) | 2016-10-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103928651A (en) | Pole lug single body with embedded composite metal structure, row type pole lug, and manufacturing method of pole lug single body | |
| CN102189382B (en) | Preparation method of embedded copper-aluminum-copper composite plate | |
| CN205050907U (en) | Piece that converges that many group batteries were used | |
| US20130071738A1 (en) | Soft package lithium battery tab material and its method of plating and application | |
| CN101414673B (en) | Positive tab for polymer or liquid flexible package lithium ion battery cell and production method thereof | |
| CN203288679U (en) | Terminal lead and electrochemistry equipment adopting same | |
| CN104638265B (en) | Battery conductive connecting piece and preparation method thereof | |
| CN204361114U (en) | A kind of hot dip welding that can improve cell piece power output | |
| CN102544420B (en) | Cathode lug for novel lithium battery and manufacturing process method for cathode lug | |
| CN104600235B (en) | A kind of composite metal structures anode ear and manufacture method for soft package lithium battery | |
| CN102610779A (en) | Anode tab, soft packing lithium ion battery and method for manufacturing anode tab | |
| CN203674299U (en) | Connection structure of laminated pole piece foils and tab of lithium battery | |
| CN204516831U (en) | A kind of lug | |
| CN104103335A (en) | Metal wire for solar energy battery back electrode and preparation method thereof, solar energy battery sheet and preparation thereof, and solar energy battery assembly | |
| CN203631644U (en) | Composite metal structure anode lug and composite metal belt material for soft package lithium battery | |
| CN203056007U (en) | Polar lug single body and row type polar lug with embedded compound metal structure | |
| CN104183295A (en) | Aluminum-based inlaying composite metal strip and manufacturing method thereof | |
| KR20100023488A (en) | Welding method for aluminum sheets | |
| CN101950603B (en) | Interlinked strip/busbar for solar energy photovoltaic module and manufacturing method thereof | |
| CN104752543A (en) | Photovoltaic solder strip, photovoltaic battery and photovoltaic battery component | |
| CN203659898U (en) | Micro-condensation photovoltaic welding strip | |
| CN204441381U (en) | Secondary cell conductive connecting piece and multicomponent composition metal band | |
| CN108448043A (en) | A kind of composition metal lug and its soft pack cell | |
| CN201323215Y (en) | Anode tab for polymer or liquid state soft-package lithium-ion cell | |
| RU2421550C2 (en) | Procedure for production of terminal strips for electrolysers |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161019 Termination date: 20220116 |