CN205016609U - Laminate polymer battery utmost point ear switching structure - Google Patents

Laminate polymer battery utmost point ear switching structure Download PDF

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Publication number
CN205016609U
CN205016609U CN201520802542.0U CN201520802542U CN205016609U CN 205016609 U CN205016609 U CN 205016609U CN 201520802542 U CN201520802542 U CN 201520802542U CN 205016609 U CN205016609 U CN 205016609U
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CN
China
Prior art keywords
positive pole
lug
pole ear
current carrying
utmost point
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.)
Expired - Fee Related
Application number
CN201520802542.0U
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Chinese (zh)
Inventor
李爱明
任宁
孙延先
冯凯
佘一红
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Zhejiang Chaowei Chuangyuan Industrial Co Ltd
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Zhejiang Chaowei Chuangyuan Industrial Co Ltd
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Priority to CN201520802542.0U priority Critical patent/CN205016609U/en
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Publication of CN205016609U publication Critical patent/CN205016609U/en
Expired - Fee Related legal-status Critical Current
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    • 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

Abstract

The utility model discloses a laminate polymer battery utmost point ear switching structure aims at solving the anodal utmost point ear of soft packet of current lithium cell for aluminium utmost point ear, and aluminium utmost point ear very difficult and soldering dish, the assembly of nickel solder connection in assembling process use soldering, resistance to weld in assembling process when aluminium material utmost point ear, the easy bad phenomenons such as welding unstability, dummy solder joint, rosin joint that appear, and product quality can not effectually control, and aluminium utmost point ear switching reliability is poor moreover, switchovers and operates the not enough of inconvenience. The utility model discloses an including cell ontology, last anodal utmost point ear, the negative pole utmost point ear of being equipped with of cell ontology, the welding has nickel current -carrying piece on the anodal utmost point ear, can dismantle between nickel current -carrying piece and the anodal utmost point ear and be connected with electrically conductive the clamp.

Description

Soft-package battery lug exchanging structure
Technical field
The utility model relates to a kind of lithium ion battery, and more particularly, it relates to the reliable soft-package battery lug exchanging structure of a kind of connection.
Background technology
Lithium-ion-power cell, with the function of its excellence and characteristic, is widely used in every field.Combined by monomer battery core with the lithium ion battery of Soft Roll shape, be assembled into large-capacity battery pack, be applied to the fields such as electric bicycle, electric automobile and UPS gradually.And soft-package battery carries out serial or parallel connection with single battery core, carry out being assembled into rectangular configuration battery pack; It is aluminium material current carrying lug that the positive pole of each single-unit battery core in battery pack exports lug; the baffle pad of battery is generally soldering dish, nickel pad; the fusing point of aluminium is more much lower than the fusing point of nickel; so that aluminium pole ears is difficult to be linked and packed with soldering dish, nickel pad in assembling process; when aluminium material lug uses soldering, electric resistance welding in assembling process; the bad phenomenon such as easy appearance welding instability, dry joint, rosin joint, product quality can not effectively control.Also the structure of aluminum ear nickel-converting lug is had at present, but these anatomical connectivity poor reliability, attended operation inconvenience, inefficiency.
Chinese patent notification number CN201540912U, disclose a kind of aluminum ear nickel-converting structure, comprise a cpp aluminium pole ears group and a nickel lug group, cpp aluminium pole ears group and nickel lug group are fixed into the equal row of spacing with fixture respectively, and after each aluminium pole ears in cpp aluminium pole ears group aligns to corresponding nickel lug in nickel lug group, laser welding is fixed.This aluminum ear nickel-converting structure processing work efficiency is high, but connection reliability is poor, attended operation inconvenience.
Utility model content
It is aluminium pole ears that the utility model overcomes existing soft package lithium battery positive pole ear, aluminium pole ears is difficult to and soldering dish in assembling process, nickel pad is linked and packed, when aluminium material lug uses soldering in assembling process, electric resistance welding, easy appearance welding is unstable, dry joint, the bad phenomenon such as rosin joint, product quality can not effectively control, and aluminium pole ears switching poor reliability, the deficiency of switch over operation inconvenience, provide a kind of soft-package battery lug exchanging structure, soft package lithium battery positive pole ear is easy and soldering dish in assembling process, nickel pad is linked and packed, lug uses soldering in assembling process, electric resistance welding, not easily occur that welding is unstable, dry joint, the bad phenomenon such as rosin joint, product quality can be controlled effectively, aluminium pole ears switching good reliability, switch over operation is convenient.
In order to solve the problems of the technologies described above, the utility model is by the following technical solutions: a kind of soft-package battery lug exchanging structure, comprise battery body, battery body is provided with positive pole ear, negative lug, positive pole ear is welded with nickel current carrying lug, between nickel current carrying lug and positive pole ear, is removably connected with conductive clip.
The positive pole ear of aluminium material welds nickel current carrying lug, nickel current carrying lug, as cathode output end, can effectively be connected with soldering dish, nickel pad during assembling, connect internal resistance low, weld reliable and stable, drastically increase production quality and production efficiency, be more conducive to follow-up assembly working.Metallic conduction is clamped in the link position of nickel current carrying lug and positive pole ear, makes the connection of nickel current carrying lug and positive pole ear more steadily reliable, serves protective effect simultaneously, prevent Joint failure to link position.And the conductive energy of conductive fixture, the electric conductivity between nickel current carrying lug and positive pole ear can be improved further.Soft package lithium battery positive pole ear in assembling process easily and soldering dish, nickel pad be linked and packed, positive pole ear uses soldering, electric resistance welding in assembling process, not easily there is the bad phenomenon such as welding instability, dry joint, rosin joint, product quality can be controlled effectively, aluminium pole ears switching good reliability, switch over operation is convenient.
As preferably, nickel current carrying lug is zigzag step structure, and nickel current carrying lug comprises output terminal part, transition part, weld part, and positive pole ear end abutment is on transition part.Positive pole ear front end is connected on transition part, makes the lap position of nickel current carrying lug and positive pole ear more accurate, convenient location.
As preferably, output terminal part and transition part link position are provided with elastic clipping strip, and positive pole ear is arranged between weld part and elastic clipping strip.Elastic clipping strip is connected to positive pole ear thus realizes the connection location of nickel current carrying lug and positive pole ear, facilitates follow-up welding.
Another kind of scheme, weld part upper surface both sides are equipped with the flange of fold inward, and the A/F between two flange upper ends is less than the width of positive pole ear, and the both sides of positive pole ear are connected between flange and weld part.Nickel current carrying lug is clamped on positive pole ear by flange, realizes the reliable connection of nickel current carrying lug and positive pole ear, and grafting location is convenient.
As preferably, two flange are equipped with the elasticity staking punch be inwardly stamped to form, positive pole ear both sides are equipped with clip slot, and elasticity staking punch is connected in clip slot.Elasticity staking punch on nickel current carrying lug is stuck in clip slot, effectively prevents play before and after between nickel current carrying lug and positive pole ear.
As preferably, positive pole ear is provided with several up big and down small welding holes in cone structure, and welding hole sidewall is provided with cannelure, and nickel current carrying lug is provided with several and welding hole pedestal one to one, and pedestal is arranged in welding hole.Pedestal is arranged in the welding hole of taper, and during laser welding, pedestal is together with welding hole fusion weld, and the welding hole of taper and the setting of cannelure, connect more firm after making both fusion weld.
As preferably, conductive clip comprises upper clamp and lower clamp, lower clamp is provided with two joint pins, upper clamp is provided with two spliced eyes corresponding with two joint pins, the joint pin in outside runs through nickel current carrying lug and is connected with the superolateral spliced eye of upper clamp, and inner side joint pin runs through nickel current carrying lug successively, positive pole ear is connected with the spliced eye of inner side on upper clamp.Joint pin on lower clamp is plugged into the interior clamping realized nickel current carrying lug and positive pole ear of spliced eye of upper clamp, and joint pin improves the electric conductivity connected between nickel current carrying lug and positive pole ear further as conductor simultaneously.
Compared with prior art, the beneficial effects of the utility model are: (1) soft package lithium battery positive pole ear in assembling process easily and soldering dish, nickel pad be linked and packed, lug uses soldering, electric resistance welding in assembling process, not easily there is the bad phenomenon such as welding instability, dry joint, rosin joint, product quality can be controlled effectively, aluminium pole ears switching good reliability, switch over operation is convenient; (2) nickel current carrying lug and positive pole ear welding operation are convenient, and welding process location is reliable, precisely, nickel current carrying lug with weld between positive pole ear reliable, weld strength with conduct electricity very well.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment 1 of the present utility model;
Fig. 2 is confined explosion's schematic diagram of embodiment 1 of the present utility model;
Fig. 3 is confined explosion's schematic diagram of embodiment 2 of the present utility model;
In figure: 1, battery body, 2, positive pole ear, 3, negative lug, 4, nickel current carrying lug, 5, conductive clip, 6, output terminal part, 7, transition part, 8, weld part, 9, location notch, 10, elastic clipping strip, 11, flange, 12, elasticity staking punch, 13, clip slot, 14, welding hole, 15, cannelure, 16, pedestal, 17, upper clamp, 18, lower clamp, 19, joint pin, 20, spliced eye.
Embodiment
Below by specific embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is further described specifically:
Embodiment 1: a kind of soft-package battery lug exchanging structure (see accompanying drawing 1, accompanying drawing 2), comprise battery body 1, battery body is provided with positive pole ear 2, negative lug 3, positive pole ear is aluminium material lug, positive pole ear is welded with nickel current carrying lug 4, between nickel current carrying lug and positive pole ear, is removably connected with metallic conduction folder 5.Nickel current carrying lug is zigzag step structure, and nickel current carrying lug comprises output terminal part 6, transition part 7, weld part 8, and weld part upper surface is provided with location notch 9, and positive pole ear is plugged in location notch, and positive pole ear end abutment is on transition part.Output terminal part and transition part link position are provided with elastic clipping strip 10, and 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 the up big and down small welding hole 14 in cone structure of a row, and welding hole sidewall is provided with cannelure 15, and nickel current carrying lug is provided with several and welding hole pedestal 16 one to one, and pedestal is arranged in welding hole.Conductive clip comprises upper clamp 17 and lower clamp 18, lower clamp is provided with two joint pins 19, upper clamp is provided with two spliced eyes 20 corresponding with two joint pins, the joint pin in outside runs through nickel current carrying lug and is connected with the superolateral spliced eye of upper clamp, and inner side joint pin runs through nickel current carrying lug successively, positive pole ear is connected with the spliced eye of inner side on upper clamp.
The positive pole ear of aluminium material welds nickel current carrying lug, nickel current carrying lug, as cathode output end, can effectively be connected with soldering dish, nickel pad during assembling, connect internal resistance low, weld reliable and stable, drastically increase production quality and production efficiency, be more conducive to follow-up assembly working.Metallic conduction is clamped in the link position of nickel current carrying lug and positive pole ear, makes the connection of nickel current carrying lug and positive pole ear more steadily reliable, serves protective effect simultaneously, prevent Joint failure to link position.And the conductive energy of conductive fixture, the electric conductivity between nickel current carrying lug and positive pole ear can be improved further.Soft package lithium battery positive pole ear in assembling process easily and soldering dish, nickel pad be linked and packed, positive pole ear uses soldering, electric resistance welding in assembling process, not easily there is the bad phenomenon such as welding instability, dry joint, rosin joint, product quality can be controlled effectively, aluminium pole ears switching good reliability, switch over operation is convenient.
The welding step of soft-package battery lug exchanging structure is: the first step, cut out out the nickel current carrying lug of suitable dimension, positive pole ear bores row's taper welding hole, and process cannelure on welding hole sidewall, nickel current carrying lug stamps out the pedestal of a row and welding hole one_to_one corresponding adaptation; Second step, snaps on positive pole ear by nickel current carrying lug, and pedestal is aimed at welding hole and is also plugged in welding hole, then clamps nickel current carrying lug with locating clip and positive pole ear positions; 3rd step, loads onto high temperature resistant protective cover at the lap position of nickel current carrying lug and positive pole ear, exposes welding hole and pedestal; 4th step, adopt laser welder to weld, the laser beam of laser welder aims at pedestal successively, makes pedestal and welding hole fusion weld together; 5th step, after having welded, withdraws laser welder, unloads protective cover and locating clip, between nickel current carrying lug and positive pole ear, then connect metallic conduction folder.The first step, while the punching of nickel current carrying lug, strikes out the step structure of zigzag and stamps out location notch at nickel current carrying lug and positive pole ear overlap, then on zigzag nickel current carrying lug, transition face stamping out elastic clipping strip by nickel current carrying lug; Second step, positive pole ear is plugged between elastic clipping strip and nickel current carrying lug, and positive pole ear front end is connected on zigzag nickel current carrying lug transition face.This welding manner is easy to operate, nickel current carrying lug and positive pole ear welding reliable, weld strength and conducting electricity very well.
Embodiment 2: a kind of soft-package battery lug exchanging structure (see accompanying drawing 3), its structure is similar to embodiment 1, main difference point is that in the present embodiment, weld part upper surface location notch both sides are equipped with the flange 11 of fold inward, A/F between two flange upper ends is less than the width of positive pole ear, and the both sides of positive pole ear are connected between flange and weld part.Two flange are equipped with the elasticity staking punch 12 be inwardly stamped to form, positive pole ear both sides are equipped with clip slot 13, and elasticity staking punch is connected in clip slot.Other structure is identical with embodiment 1.Nickel current carrying lug is clamped on positive pole ear by flange, realizes the reliable connection of nickel current carrying lug and positive pole ear, and grafting location is convenient.Elasticity staking punch on nickel current carrying lug is stuck in clip slot, effectively prevents play before and after between nickel current carrying lug and positive pole ear.
The welding step of soft-package battery lug exchanging structure is: the first step, cut out out the nickel current carrying lug of suitable dimension, positive pole ear bores row's taper welding hole, and process cannelure on welding hole sidewall, nickel current carrying lug stamps out the pedestal of a row and welding hole one_to_one corresponding adaptation; Second step, snaps on positive pole ear by nickel current carrying lug, and pedestal is aimed at welding hole and is also plugged in welding hole, then clamps nickel current carrying lug with locating clip and positive pole ear positions; 3rd step, loads onto high temperature resistant protective cover at the lap position of nickel current carrying lug and positive pole ear, exposes welding hole and pedestal; 4th step, adopt laser welder to weld, the laser beam of laser welder aims at pedestal successively, makes pedestal and welding hole fusion weld together; 5th step, after having welded, withdraws laser welder, unloads protective cover and locating clip, between nickel current carrying lug and positive pole ear, then connect metallic conduction folder.The first step, while the punching of nickel current carrying lug, nickel current carrying lug struck out the step structure of zigzag and stamp out the flange of fold inward at nickel current carrying lug and positive pole ear overlap both sides, then on flange, inwardly stamp out elasticity staking punch, then process the corresponding adaptive clip slot with elasticity staking punch in positive pole ear both sides; Second step, positive 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, and elasticity staking punch is connected in clip slot.
Above-described embodiment is two kinds of preferably schemes of the present utility model, not does any pro forma restriction to the utility model, also has other variant and remodeling under the prerequisite not exceeding the technical scheme described in claim.

Claims (7)

1. a soft-package battery lug exchanging structure, comprises battery body, and battery body is provided with positive pole ear, negative lug, it is characterized in that, positive pole ear is welded with nickel current carrying lug, is removably connected with conductive clip between nickel current carrying lug and positive pole ear.
2. soft-package battery lug exchanging structure according to claim 1, is characterized in that, nickel current carrying lug is zigzag step structure, and nickel current carrying lug comprises output terminal part, transition part, weld part, and positive pole ear end abutment is on transition part.
3. soft-package battery lug exchanging structure according to claim 2, is characterized in that, output terminal part and transition part link position are provided with elastic clipping strip, and positive pole ear is arranged between weld part and elastic clipping strip.
4. soft-package battery lug exchanging structure according to claim 2, it is characterized in that, weld part upper surface both sides are equipped with the flange of fold inward, and the A/F between two flange upper ends is less than the width of positive pole ear, and the both sides of positive pole ear are connected between flange and weld part.
5. soft-package battery lug exchanging structure according to claim 4, is characterized in that, two flange are equipped with the elasticity staking punch be inwardly stamped to form, positive pole ear both sides are equipped with clip slot, and elasticity staking punch is connected in clip slot.
6. soft-package battery lug exchanging structure according to claim 1, it is characterized in that, positive pole ear is provided with several up big and down small welding holes in cone structure, and nickel current carrying lug is provided with several and welding hole pedestal one to one, and pedestal is arranged in welding hole.
7. the soft-package battery lug exchanging structure according to claim 1 to 6 any one, it is characterized in that, conductive clip comprises upper clamp and lower clamp, lower clamp is provided with two joint pins, upper clamp is provided with two spliced eyes corresponding with two joint pins, the joint pin in outside runs through nickel current carrying lug and is connected with the superolateral spliced eye of upper clamp, and inner side joint pin runs through nickel current carrying lug successively, positive pole ear is connected with the spliced eye of inner side on upper clamp.
CN201520802542.0U 2015-10-13 2015-10-13 Laminate polymer battery utmost point ear switching structure Expired - Fee Related CN205016609U (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105261726A (en) * 2015-10-13 2016-01-20 浙江超威创元实业有限公司 Positive tab connection structure of battery and welding method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105261726A (en) * 2015-10-13 2016-01-20 浙江超威创元实业有限公司 Positive tab connection structure of battery and welding method

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160203

Termination date: 20201013

CF01 Termination of patent right due to non-payment of annual fee