CN105261726B - Cell positive pole ear exchanging structure and welding method - Google Patents

Cell positive pole ear exchanging structure and welding method Download PDF

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Publication number
CN105261726B
CN105261726B CN201510670289.2A CN201510670289A CN105261726B CN 105261726 B CN105261726 B CN 105261726B CN 201510670289 A CN201510670289 A CN 201510670289A CN 105261726 B CN105261726 B CN 105261726B
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Prior art keywords
positive pole
pole ear
current carrying
carrying lug
nickel current
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CN105261726A (en
Inventor
任宁
孙延先
冯凯
佘红
佘一红
李爱明
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Zhejiang Chaowei Chuangyuan Industrial Co Ltd
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Zhejiang Chaowei Chuangyuan Industrial Co Ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/531Electrode connections inside a battery casing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20Bonding
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/543Terminals
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

The invention discloses a kind of cell positive pole ear exchanging structure and welding method, it is aluminium pole ears to aim to solve the problem that existing soft package lithium battery positive pole ear, aluminium pole ears are difficult to be linked and packed with soldering disk, nickel pad in assembling process, when aluminium material lug uses soldering, electric resistance welding in assembling process, easily occur welding the bad phenomenons such as unstable, dry joint, rosin joint, product quality can not be controlled effectively, and aluminium pole ears switching poor reliability, the deficiency of switch over operation inconvenience.The invention includes battery body, and battery body is provided with positive pole ear, negative lug, positive pole ear and is welded with nickel current carrying lug, and metallic conduction folder is removably connected between nickel current carrying lug and positive pole ear.

Description

Cell positive pole ear exchanging structure and welding method
Technical field
The present invention relates to a kind of lithium ion battery, more specifically, it relates to a kind of reliable cell positive pole ear of connection Exchanging structure and welding method.
Background technology
Lithium-ion-power cell is widely used in every field with its excellent function and characteristic.With the lithium of Soft Roll shape from Sub- battery is combined by single battery core, is assembled into large-capacity battery pack, gradually applied to electric bicycle, electric automobile and The fields such as UPS.And soft-package battery is to carry out serial or parallel connection with single branch battery core, progress is assembled into rectangular configuration battery pack;Battery The positive pole output lug of each single-unit battery core in group is aluminium material current carrying lug, and the protection board pad of battery is generally soldering disk, nickel Pad, the fusing point of aluminium is more much lower than the fusing point of nickel, so that aluminium pole ears are difficult to be connected dress with soldering disk, nickel pad in assembling process Match somebody with somebody, when aluminium material lug uses soldering, electric resistance welding in assembling process, the unstable, dry joint of welding, rosin joint etc. easily occur bad Phenomenon, product quality can not be controlled effectively.Also there is the structure of aluminum ear nickel-converting lug at present, but the connection of these structures is reliable Property it is poor, attended operation inconvenience, inefficiency.
Chinese patent notification number CN201540912U, discloses a kind of aluminum ear nickel-converting structure, including a cpp aluminium pole ears groups With a nickel lug group, cpp aluminium pole ears group and nickel lug group are fixed into the equal row of spacing, cpp aluminium pole ears with fixture respectively Laser welding is fixed after each aluminium pole ears nickel lug corresponding to nickel lug group in group aligns.This aluminum ear nickel-converting structure adds Work operating efficiency is high, but connection reliability is poor, attended operation inconvenience.
The content of the invention
Instant invention overcomes existing soft package lithium battery positive pole ear be aluminium pole ears, aluminium pole ears in assembling process be difficult with Soldering disk, nickel pad are linked and packed, and when aluminium material lug uses soldering, electric resistance welding in assembling process, easily occur welding not The bad phenomenons such as stabilization, dry joint, rosin joint, product quality can not be controlled effectively, and aluminium pole ears switching poor reliability, switching behaviour Make a kind of the not enough there is provided cell positive pole ear exchanging structure and welding method of inconvenience, soft package lithium battery positive pole ear is in dress Easily it is linked and packed during matching somebody with somebody with soldering disk, nickel pad, lug uses soldering, electric resistance welding in assembling process, is less prone to The bad phenomenons such as unstable, dry joint, rosin joint are welded, product quality can be controlled effectively, aluminium pole ears switching good reliability, Switch over operation is convenient.
In order to solve the above-mentioned technical problem, the present invention uses following technical scheme:A kind of cell positive pole ear exchanging structure, Including battery body, battery body is provided with positive pole ear, negative lug, positive pole ear and is welded with nickel current carrying lug, nickel current-carrying Metallic conduction folder is removably connected between piece and positive pole ear.
Upper nickel current carrying lug is welded on the positive pole ear of aluminium material, nickel current carrying lug is as cathode output end, during assembling and soldering Disk, nickel pad can be connected effectively, and connection internal resistance is low, welded reliable and stable, drastically increased production quality and production efficiency, It is more beneficial for follow-up assembly working.Metallic conduction is clamped in the link position of nickel current carrying lug and positive pole ear, makes nickel current-carrying The connection of piece and positive pole ear is more steady reliable, while serving protective effect to link position, prevents Joint failure.And Conductive fixture has conductivity, and can further improve the electric conductivity between nickel current carrying lug and positive pole ear.Soft package lithium battery Positive pole ear is easily linked and packed in assembling process with soldering disk, nickel pad, positive pole ear in assembling process using soldering, Electric resistance welding, is less prone to the bad phenomenons such as the unstable, dry joint of welding, rosin joint, and product quality can be controlled effectively, aluminium pole Ear switching good reliability, switch over operation is convenient.
Preferably, nickel current carrying lug is in zigzag step structure, nickel current carrying lug includes output terminal part, transition part, welding Portion, weld part upper surface is provided with locating slot, and positive pole ear is plugged in locating slot, and positive pole ear end abutment is in transition part On.Before nickel current carrying lug is welded with positive pole ear, locating slot is plugged on positive pole ear, and positive pole ear front end is connected to transition part On, make the lap position of nickel current carrying lug and positive pole ear more accurate, convenient positioning.
Preferably, output terminal part and transition part link position are provided with elastic clipping strip, positive pole ear is arranged on weld part Between elastic clipping strip.Elastic clipping strip is connected to positive pole ear to realize the connection positioning of nickel current carrying lug and positive pole ear, side Continuous welding after an action of the bowels.
Another scheme, weld part upper surface locating slot both sides are equipped between the flange of fold inward, two flange upper ends A/F be less than positive pole ear width, the both sides of positive pole ear are connected between flange and weld part.Nickel current carrying lug leads to Cross flange to be clamped on positive pole ear, realize being reliably connected for nickel current carrying lug and positive pole ear, grafting positioning is convenient.
Preferably, being equipped with the elastic staking punch being inwardly stamped to form on two flange, positive pole ear both sides are equipped with folder Groove, elastic staking punch is connected in clip slot.Elastic staking punch on nickel current carrying lug is stuck in clip slot, effectively prevent nickel current carrying lug and Play before and after between positive pole ear.
Preferably, positive pole ear is provided with the welding hole of several up big and down small tapered structures, welding hole side wall Provided with annular groove, nickel current carrying lug is arranged on welding provided with several and the one-to-one pedestal of welding hole, pedestal In hole.Pedestal is arranged in the welding hole of taper, during laser welding, pedestal together with welding hole fusion weld, The setting of the welding hole and annular groove of taper, makes to connect more firm after both fusion welds.
Preferably, conductive clip include upper clamp and lower clamp, lower clamp be provided with two connecting poles, upper clamp be provided with and Corresponding two spliced eye of two connecting poles, the connecting pole in outside is connected through nickel current carrying lug with the superolateral spliced eye of upper clamp, interior Side connecting pole sequentially passes through the spliced eye connection of inner side on nickel current carrying lug, positive pole ear and upper clamp.Connecting pole on lower clamp The clamping realized in the spliced eye of upper clamp to nickel current carrying lug and positive pole ear is plugged into, while connecting pole is further as conductor Improve the electric conductivity connected between nickel current carrying lug and positive pole ear.
A kind of welding method of cell positive pole ear exchanging structure, the first step is cut out the nickel current carrying lug of suitable dimension, Row's taper welding hole is bored on positive pole ear, and annular groove is processed on the wall of welding hole side, one is stamped out on nickel current carrying lug Row and welding hole correspond the pedestal of adaptation;Second step, nickel current carrying lug is snapped on positive pole ear, pedestal pair Quasi- welding hole is simultaneously plugged in welding hole, then clamps nickel current carrying lug with locating clip and positive pole ear is positioned;3rd step, High temperature resistant protective cover is loaded onto in the lap position of nickel current carrying lug and positive pole ear, exposes welding hole and pedestal;4th step, is adopted Welded with laser welder, the laser beam of laser welder is directed at pedestal successively, melt pedestal and welding hole Weld together;5th step, after the completion of welding, withdraws laser welder, unloads protective cover and locating clip, then in nickel current carrying lug and Upper metallic conduction folder is connected between positive pole ear.
Before laser welding, taper welding hole and annular groove are processed on nickel current carrying lug, is processed on positive pole ear Pedestal, pedestal is together with welding hole fusion weld when welding, the welding hole of taper and setting for annular groove Put, make to connect more firm after both fusion welds.Protective cover carries out insulation blocking to non-solder position, prevents non-solder position Damaged by laser.This welding manner is easy to operate, and nickel current carrying lug and positive pole ear welding are reliable, weld strength and conduction Performance is good.
Preferably, the first step, while nickel current carrying lug punching, nickel current carrying lug is struck out the stepped knot of zigzag Structure simultaneously stamps out locating slot in nickel current carrying lug and positive pole ear overlap, is then rushed on zigzag nickel current carrying lug on transition face Extrude elastic clipping strip;Second step, positive pole ear is plugged between elastic clipping strip and nickel current carrying lug, and positive pole ear front end is connected to Z On font nickel current carrying lug transition face.
Before nickel current carrying lug is welded with positive pole ear, locating slot is plugged on positive pole ear, and positive pole ear is plugged on elasticity Between card article and nickel current carrying lug, positive pole ear front end is connected on transition part, makes the lap position of nickel current carrying lug and positive pole ear More precisely, convenient positioning.
Nickel current carrying lug while nickel current carrying lug punching, is struck out the stepped of zigzag by another scheme, the first step Structure simultaneously stamps out the flange of fold inward in nickel current carrying lug and positive pole ear overlap both sides, is then inwardly rushed on flange Extrude elastic staking punch, then process in positive pole ear both sides and the corresponding adaptation of elasticity staking punch clip slot;Second step, positive pole pole Ear is plugged between flange and nickel current carrying lug, and positive pole ear front end is connected on zigzag nickel current carrying lug transition face, elastic staking punch It is connected in clip slot.
Nickel current carrying lug is clamped on positive pole ear by flange, realizes being reliably connected for nickel current carrying lug and positive pole ear, together When elastic staking punch be connected in clip slot, make nickel current carrying lug and positive pole ear connect positioning more facilitate, it is accurate.
Compared with prior art, the beneficial effects of the invention are as follows:(1)Soft package lithium battery positive pole ear holds in assembling process Easily be linked and packed with soldering disk, nickel pad, lug in assembling process use soldering, electric resistance welding, be less prone to welding it is unstable, The bad phenomenons such as dry joint, rosin joint, product quality can be controlled effectively, aluminium pole ears switching good reliability, switch over operation side Just;(2)Nickel current carrying lug is convenient with positive pole ear welding operation, and welding process positioning is reliable, accurate, nickel current carrying lug and positive pole ear Between weld reliable, weld strength and conduct electricity very well.
Brief description of the drawings
Fig. 1 is the structural representation of embodiments of the invention 1;
Fig. 2 is confined explosion's schematic diagram of embodiments of the invention 1;
Fig. 3 is confined explosion's schematic diagram of embodiments of the invention 2;
In figure:1st, battery body, 2, positive pole ear, 3, negative lug, 4, nickel current carrying lug, 5, conductive clip, 6, lead-out terminal Portion, 7, transition part, 8, weld part, 9, locating slot, 10, elastic clipping strip, 11, flange, 12, elastic staking punch, 13, clip slot, 14, weldering Connect hole, 15, annular groove, 16, pedestal, 17, upper clamp, 18, lower clamp, 19, connecting pole, 20, spliced eye.
Embodiment
Below by specific embodiment, and with reference to accompanying drawing, technical scheme is further described specifically:
Embodiment 1:A kind of cell positive pole ear exchanging structure(Referring to accompanying drawing 1, accompanying drawing 2), including battery body 1, battery Body is provided with positive pole ear 2, negative lug 3, and positive pole ear is to be welded with nickel current carrying lug 4 on aluminium material lug, positive pole ear, Metallic conduction folder 5 is removably connected between nickel current carrying lug and positive pole ear.Nickel current carrying lug is in zigzag step structure, and nickel is carried Flow includes output terminal part 6, transition part 7, weld part 8, and weld part upper surface is provided with locating slot 9, and positive pole ear is plugged on In locating slot, positive pole ear end abutment is on transition part.Output terminal part and transition part link position are provided with elastic clipping strip 10, Positive pole ear is arranged between weld part and elastic clipping strip.Elastic clipping strip is provided with two, is stamped to form.Positive pole ear is provided with one The welding hole 14 of up big and down small tapered structure is arranged, welding hole side wall is provided with annular groove 15, and nickel current carrying lug is provided with several With the one-to-one pedestal of welding hole 16, pedestal is arranged in welding hole.Conductive clip includes upper clamp 17 and lower folder Body 18, lower clamp is provided with two connecting poles 19, and upper clamp is provided with two spliced eye 20 corresponding with two connecting poles, the connection in outside Post is connected through nickel current carrying lug with the superolateral spliced eye of upper clamp, and inner side connecting pole sequentially passes through nickel current carrying lug, positive pole ear It is connected with the spliced eye of inner side on upper clamp.
Upper nickel current carrying lug is welded on the positive pole ear of aluminium material, nickel current carrying lug is as cathode output end, during assembling and soldering Disk, nickel pad can be connected effectively, and connection internal resistance is low, welded reliable and stable, drastically increased production quality and production efficiency, It is more beneficial for follow-up assembly working.Metallic conduction is clamped in the link position of nickel current carrying lug and positive pole ear, makes nickel current-carrying The connection of piece and positive pole ear is more steady reliable, while serving protective effect to link position, prevents Joint failure.And Conductive fixture has conductivity, and can further improve the electric conductivity between nickel current carrying lug and positive pole ear.Soft package lithium battery Positive pole ear is easily linked and packed in assembling process with soldering disk, nickel pad, positive pole ear in assembling process using soldering, Electric resistance welding, is less prone to the bad phenomenons such as the unstable, dry joint of welding, rosin joint, and product quality can be controlled effectively, aluminium pole Ear switching good reliability, switch over operation is convenient.
A kind of welding method of cell positive pole ear exchanging structure, the first step is cut out the nickel current carrying lug of suitable dimension, Row's taper welding hole is bored on positive pole ear, and annular groove is processed on the wall of welding hole side, one is stamped out on nickel current carrying lug Row and welding hole correspond the pedestal of adaptation;Second step, nickel current carrying lug is snapped on positive pole ear, pedestal pair Quasi- welding hole is simultaneously plugged in welding hole, then clamps nickel current carrying lug with locating clip and positive pole ear is positioned;3rd step, High temperature resistant protective cover is loaded onto in the lap position of nickel current carrying lug and positive pole ear, exposes welding hole and pedestal;4th step, is adopted Welded with laser welder, the laser beam of laser welder is directed at pedestal successively, melt pedestal and welding hole Weld together;5th step, after the completion of welding, withdraws laser welder, unloads protective cover and locating clip, then in nickel current carrying lug and Upper metallic conduction folder is connected between positive pole ear.The first step, while nickel current carrying lug punching, Z-shaped is struck out by nickel current carrying lug The step structure of shape simultaneously stamps out locating slot in nickel current carrying lug and positive pole ear overlap, then in zigzag nickel current carrying lug Stamp out elastic clipping strip on upper transition face;Second step, positive pole ear is plugged between elastic clipping strip and nickel current carrying lug, positive pole ear Front end is connected on zigzag nickel current carrying lug transition face.This welding manner is easy to operate, and nickel current carrying lug and positive pole ear welding can Lean on, weld strength and conduct electricity very well.
Embodiment 2:A kind of cell positive pole ear exchanging structure(Referring to accompanying drawing 3), its structure is similar to Example 1, mainly Difference is that weld part upper surface locating slot both sides in the present embodiment are equipped with the flange 11 of fold inward, two flange upper ends it Between A/F be less than positive pole ear width, the both sides of positive pole ear are connected between flange and weld part.On two flange The elastic staking punch 12 being inwardly stamped to form is equipped with, positive pole ear both sides are equipped with clip slot 13, and elastic staking punch is connected to folder In groove.Other structures are same as Example 1.Nickel current carrying lug is clamped on positive pole ear by flange, realizes nickel current carrying lug and just Pole lug is reliably connected, and grafting positioning is convenient.Elastic staking punch on nickel current carrying lug is stuck in clip slot, effectively prevents nickel current-carrying Play before and after between piece and positive pole ear.
A kind of welding method of cell positive pole ear exchanging structure, the first step is cut out the nickel current carrying lug of suitable dimension, Row's taper welding hole is bored on positive pole ear, and annular groove is processed on the wall of welding hole side, one is stamped out on nickel current carrying lug Row and welding hole correspond the pedestal of adaptation;Second step, nickel current carrying lug is snapped on positive pole ear, pedestal pair Quasi- welding hole is simultaneously plugged in welding hole, then clamps nickel current carrying lug with locating clip and positive pole ear is positioned;3rd step, High temperature resistant protective cover is loaded onto in the lap position of nickel current carrying lug and positive pole ear, exposes welding hole and pedestal;4th step, is adopted Welded with laser welder, the laser beam of laser welder is directed at pedestal successively, melt pedestal and welding hole Weld together;5th step, after the completion of welding, withdraws laser welder, unloads protective cover and locating clip, then in nickel current carrying lug and Upper metallic conduction folder is connected between positive pole ear.The first step, while nickel current carrying lug punching, Z-shaped is struck out by nickel current carrying lug The step structure of shape simultaneously stamps out the flange of fold inward in nickel current carrying lug and positive pole ear overlap both sides, is then turning over Elastic staking punch is inwardly stamped out on side, then processes in positive pole ear both sides the clip slot of adaptation corresponding with elastic staking punch;The Two steps, positive pole ear is plugged between flange and nickel current carrying lug, and positive pole ear front end is connected to zigzag nickel current carrying lug transition face On, elastic staking punch is connected in clip slot.
Embodiment described above is two kinds of preferably schemes of the present invention, not makees any formal to the present invention Limitation, also has other variants and remodeling on the premise of without departing from the technical scheme described in claim.

Claims (9)

1. a kind of cell positive pole ear exchanging structure, including battery body, battery body are provided with positive pole ear, negative lug, It is characterized in that, nickel current carrying lug is welded with positive pole ear, metallic conduction is removably connected between nickel current carrying lug and positive pole ear Folder;Nickel current carrying lug is in zigzag step structure, and nickel current carrying lug includes output terminal part, transition part, weld part, weld part upper table Face is provided with locating slot, and positive pole ear is plugged in locating slot, and positive pole ear end abutment is on transition part.
2. cell positive pole ear exchanging structure according to claim 1, it is characterized in that, output terminal part and transition part connection Position is provided with elastic clipping strip, and positive pole ear is arranged between weld part and elastic clipping strip.
3. cell positive pole ear exchanging structure according to claim 1, it is characterized in that, weld part upper surface locating slot both sides The A/F being equipped between the flange of fold inward, two flange upper ends is less than the width of positive pole ear, the two of positive pole ear Checkpost is connected between flange and weld part.
4. cell positive pole ear exchanging structure according to claim 3, it is characterized in that, inside punching press is equipped with two flange Elastic staking punch, positive pole ear both sides are equipped with clip slot, and elastic staking punch is connected in clip slot.
5. the cell positive pole ear exchanging structure according to claim 1 any one, it is characterized in that, positive pole ear is provided with The welding hole of several up big and down small tapered structures, welding hole side wall is provided with annular groove, and nickel current carrying lug is provided with several With the one-to-one pedestal of welding hole, pedestal is arranged in welding hole.
6. the cell positive pole ear exchanging structure according to claim 1 to 5 any one, it is characterized in that, conductive clip includes Upper clamp and lower clamp, lower clamp are provided with two connecting poles, and upper clamp is provided with two spliced eyes corresponding with two connecting poles, outside Connecting pole be connected through nickel current carrying lug with the superolateral spliced eye of upper clamp, inner side connecting pole sequentially passes through nickel current carrying lug, just Pole lug is connected with the spliced eye of inner side on upper clamp.
7. a kind of welding method of the cell positive pole ear exchanging structure described in claim 1 to 6 any one, it is characterized in that, The first step, is cut out the nickel current carrying lug of suitable dimension, and row's taper welding hole is bored on positive pole ear, and on the wall of welding hole side Annular groove is processed, a row is stamped out on nickel current carrying lug and welding hole corresponds the pedestal of adaptation;Second step, by nickel Current carrying lug is snapped on positive pole ear, and pedestal alignment welding hole is simultaneously plugged in welding hole, is then clamped with locating clip Nickel current carrying lug and positive pole ear are positioned;3rd step, loads onto high temperature resistant in the lap position of nickel current carrying lug and positive pole ear and protects Shield, exposes welding hole and pedestal;4th step, is welded using laser welder, and the laser beam of laser welder is right successively Quasi- pedestal, makes pedestal and welding hole fusion weld together;5th step, after the completion of welding, withdraws laser welder, Protective cover and locating clip are unloaded, then metallic conduction is pressed from both sides in connection between nickel current carrying lug and positive pole ear.
8. the welding method of cell positive pole ear exchanging structure according to claim 7, it is characterized in that, the first step, in nickel While current carrying lug punching, nickel current carrying lug is struck out into the step structure of zigzag and overlapped in nickel current carrying lug and positive pole ear Part stamps out locating slot, then stamps out elastic clipping strip on transition face on zigzag nickel current carrying lug;Second step, positive pole ear It is plugged between elastic clipping strip and nickel current carrying lug, positive pole ear front end is connected on zigzag nickel current carrying lug transition face.
9. the welding method of cell positive pole ear exchanging structure according to claim 7, it is characterized in that, the first step, in nickel While current carrying lug punching, nickel current carrying lug is struck out into the step structure of zigzag and overlapped in nickel current carrying lug and positive pole ear Part both sides stamp out the flange of fold inward, and elastic staking punch is then inwardly stamped out on flange, then in positive pole ear two Side processes the clip slot of adaptation corresponding with elastic staking punch;Second step, positive pole ear is plugged between flange and nickel current carrying lug, just Pole lug front end is connected on zigzag nickel current carrying lug transition face, and elastic staking punch is connected in clip slot.
CN201510670289.2A 2015-10-13 2015-10-13 Cell positive pole ear exchanging structure and welding method Active CN105261726B (en)

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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107369853B (en) * 2016-05-13 2023-08-11 宁德时代新能源科技股份有限公司 Electrochemical energy storage device
CN106825959B (en) * 2017-03-21 2018-12-07 无锡奥特维智能装备有限公司 Battery pole ear welding equipment
CN107971622A (en) * 2017-11-22 2018-05-01 中山市电赢科技有限公司 A kind of soft package lithium battery cathode tab welding lengthening auxiliary device and its application method
CN109623060A (en) * 2018-12-03 2019-04-16 合肥晶澳太阳能科技有限公司 A kind of welding method of photovoltaic component terminal box
CN111755657B (en) * 2019-03-29 2022-02-15 宁德新能源科技有限公司 Electrode assembly
CN110061177A (en) * 2019-05-05 2019-07-26 昆山长盈精密技术有限公司 Battery modules connection system
CN112518119A (en) * 2020-11-23 2021-03-19 浙江霖润新能源科技有限公司 Tab welding process of nickel-based high-energy battery

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002037584A1 (en) * 2000-11-01 2002-05-10 Sony Corporation Cell, cell production method, welded article production method and pedestal
CN201556658U (en) * 2009-07-23 2010-08-18 东莞新能源科技有限公司 Lithium ion battery anode adapter structure
CN202217720U (en) * 2011-08-17 2012-05-09 上海中兴派能能源科技有限公司 Parallel connection structure applied to packaging of soft packaged monomer batteries
CN203733874U (en) * 2014-03-18 2014-07-23 宁德时代新能源科技有限公司 Soft-packed battery pack and battery cell tab connecting structure
CN104201300B (en) * 2014-07-10 2017-01-04 浙江努奥罗新能源科技有限公司 A kind of lithium battery
CN205016609U (en) * 2015-10-13 2016-02-03 浙江超威创元实业有限公司 Laminate polymer battery utmost point ear switching structure

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