CN208256797U - A kind of lithium ionic cell positive pole ear - Google Patents
A kind of lithium ionic cell positive pole ear Download PDFInfo
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- CN208256797U CN208256797U CN201820986957.1U CN201820986957U CN208256797U CN 208256797 U CN208256797 U CN 208256797U CN 201820986957 U CN201820986957 U CN 201820986957U CN 208256797 U CN208256797 U CN 208256797U
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- welding
- positive pole
- aluminium strip
- pole ear
- cell positive
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Battery Electrode And Active Subsutance (AREA)
- Secondary Cells (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model discloses a kind of lithium ionic cell positive pole ear, including main part and switching aluminium strip, and main part is aluminium strip or nickel strap, and is provided with gel；Switching aluminium strip is V-arrangement, and two edge lengths of V-arrangement are consistent, and the v-shaped opening angle is 30 °~150 ° and main part is by being welded to connect composition Y shape.The lithium ionic cell positive pole ear of the utility model is in welding, the switching aluminium strip welding of V-arrangement is directly coated on to the two sides of aluminium foil, it is not required to overturn, not will cause pulling force makes aluminium foil lead to the problem of part or tear to shreds, bonding area is identical as packet welding structure, pulling force >=20N/5mm is conducive to the firmness for improving welding.
Description
Technical field
The utility model relates to battery technology field more particularly to a kind of lithium ionic cell positive pole ears.
Background technique
Tab is the important component of lithium ion battery, is the channel of electric current output and input, at present lithium ion battery
New energy field is had been widely used for, occupation rate of market significantly improves.Lithium ion cell polar ear shape is sold generally on the market
For "-" type, positive pole ear mainly has aluminium pole ears and aluminium-to-nickel tab, and welding manner mainly has straight weldering and packet weldering two ways.Such as
There is the inadequate risk of welding tension intensity there are tab and aluminium foil contact area are smaller in Fig. 1, straight welding structure.Such as Fig. 2, packet weldering
It is increased after structure lug bending with aluminium foil contact area, but packet postwelding needs to flip up tab about 180 degree, there are easy
Lead to the risk of aluminium foil part.
Patent CN201410827778.X provides a kind of soft-package battery pole ear welding method, first carries out prewelding to battery core,
It will be turned over again and be turn 90 degrees so that with glue after cutting with being ultrasonically bonded in cell foil with 90 degree of glue tab welding end bending again
Tab is parallel with battery core.This method, which shifts to an earlier date, deforms band glue tab bending, is then welded, is cut, is not easy to tear foil to shreds, easily
It is automated in realizing.Such as Fig. 3, but there is still a need for turn over to turn 90 degrees so that, welding parallel with battery core with glue tab after welding for this patent
Area is also not big enough, affects the firmness of welding to a certain extent.
Utility model content
Purpose of the utility model is to solve bonding areas in the prior art less to influence firm welding degree, band glue
The problem of causing pulling force in tab switching process, leading to aluminium foil part or tear to shreds.
The utility model provides a kind of lithium ionic cell positive pole ear, including main part and switching aluminium strip, the main body
Part is aluminium strip or nickel strap, and is provided with gel, and the switching aluminium strip is V-arrangement, and the switching aluminium strip and main part pass through
It is welded to connect.
Further, the one side of the position of the welding on the outside of the V-arrangement vertex, the main part and the V-arrangement
Switching aluminium strip form Y shape.
Further, the overlapping region width of the welding is 2~20mm.
Further, the weldering print of the welding is 2 rows or more.
Further, the thickness of the switching aluminium strip is identical as the thickness of main part.
Further, two edge lengths of V-arrangement are consistent, and the v-shaped opening angle is 30 °~150 °.
The utility model has the beneficial effects that
When welding, the switching aluminium strip welding of V-arrangement is directly coated on to the two sides of aluminium foil, gel and battery core are flat at this time
Row is compared with packet welding structure is not required to overturning tab, not will cause pulling force, aluminium foil will not be made to lead to the problem of part or tear to shreds.
Since switching aluminium strip welding is coated on the two sides of aluminium foil, bonding area is identical as packet welding structure, is straight welding structure
Twice, welding tension intensity gets a promotion, pulling force >=20N/5mm, is conducive to the firmness for improving welding.
2 times with a thickness of al zone thickness of weld tab simultaneously are theoretically reduced to originally by the heat that internal resistance generates
Half, be conducive to extend the service life of tab.
The lithium ionic cell positive pole ear of the utility model makes moderate progress to the problems such as tension intensity, heat production, part.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the straight welding structure schematic diagram of the prior art；
Fig. 2 is prior art packet welding structure schematic diagram；
Fig. 3 is a kind of soft-package battery pole ear welding method to the schematic diagram after tab welding；
Fig. 4 is the utility model lithium ionic cell positive pole ear and aluminium foil schematic diagram to be welded；
Fig. 5 is the utility model lithium ionic cell positive pole ear side schematic view；
Fig. 6 is that the utility model lithium ionic cell positive pole ear makes schematic diagram
Appended drawing reference in above-mentioned figure:
1, main part, 2, gel, 3, switching aluminium strip, 4, aluminium foil to be welded, 5, weldering print.
Specific embodiment
Utility model is further illustrated with reference to the accompanying drawing, but is not intended to limit the scope of the present invention.
As shown in Figure 4, Figure 5, the utility model provides a kind of lithium ionic cell positive pole ear, including main part 1 and turns
Aluminium strip 3 is connect, the main part 1 is aluminium strip or nickel strap, and is provided with gel 2, and the switching aluminium strip 3 is V-arrangement, the switching
Aluminium strip 3 and main part 1 pass through welded connecting.
As a preferred embodiment, the one side of the position of the welding on the outside of the V-arrangement vertex, 1 He of main part
The switching aluminium strip 3 of the V-arrangement forms Y shape.
As a preferred embodiment, the overlapping region width of the welding is 2~20mm.
As a preferred embodiment, the weldering print 5 of the welding is more than 2 row.
As a preferred embodiment, the thickness of the switching aluminium strip 3 is identical as the thickness of main part 1.
As a preferred embodiment, two edge lengths of V-arrangement are consistent, and the v-shaped opening angle is 30 °~150 °.
When lithium ionic cell positive pole ear welds, the switching aluminium strip 3 of V-arrangement is directly coated on to the two sides of aluminium foil 4 to be welded,
Gel 2 is parallel with battery core at this time, is then welded to the two sides for aluminium strip 3 of transferring using laser welding or ultrasonic bonding to be welded
It connects on aluminium foil 4, that is, completes the welding of lithium ionic cell positive pole ear.
The utility model and packet welding structure are compared, and are not required to overturning tab, not will cause pulling force, aluminium foil will not be made to generate part
Or the problem of tearing to shreds；Since the switching welding of aluminium strip 3 is coated on the two sides of aluminium foil 4 to be welded, bonding area is identical as packet welding structure,
It is twice of straight welding structure, welding tension intensity gets a promotion, pulling force >=20N/5mm, is conducive to the firmness for improving welding；
2 times with a thickness of switching 3 thickness of aluminium strip of weld tab simultaneously, are theoretically reduced to original two by the heat that internal resistance generates
/ mono-, it is conducive to extend the service life of tab.The lithium ionic cell positive pole ear of the utility model is to tension intensity, heat production, disconnected
The problems such as piece, makes moderate progress.
Lithium ionic cell positive pole ear manufacturing process such as Fig. 6, the utility model is as follows: by the main body where gel 2
The aluminium strip or nickel strap of part 1 are Chong Die with switching aluminium strip 3, and in 5mm, overlapping region is located in switching aluminium strip 3 overlapping region width
Portion region, two sides are symmetrical after need to guaranteeing the switching bending of aluminium strip 3；Spot welding, 5 points of weldering print are carried out with laser or ultrasonic spot welder
2 rows are welded, the spacing that 2 rows weld print 5 is 2.0 ± 0.1mm, and it is 1.0 ± 0.1mm that same row, which welds 5 spot pitch of print,.After the completion of spot welding,
To be fulcrum close to the first row of 2 side of gel weldering print 5, switching aluminium strip 3 is bent into forming V-shape, V-arrangement angle is 90 °, aluminium of transferring
3 two sides of band are symmetrical, obtain a kind of lithium ionic cell positive pole ear.
The foregoing describe basic principles, main features, and advantages of the present invention.The skill of the industry
Art personnel it should be appreciated that the present utility model is not limited to the above embodiments, what is described in the above embodiment and the description is only
Illustrate the principles of the present invention, the utility model also has various on the premise of not departing from the spirit and scope of the utility model
Changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The requires of the utility model protection
Range is defined by appended claims and its equivalent.
Claims (6)
1. a kind of lithium ionic cell positive pole ear, which is characterized in that including main part and switching aluminium strip, the main part is
Aluminium strip or nickel strap, and it is provided with gel, the switching aluminium strip is that V-arrangement, the switching aluminium strip and main part are connected by welding
It connects.
2. lithium ionic cell positive pole ear according to claim 1, which is characterized in that the position of the welding is in the V
The switching aluminium strip of one side on the outside of shape vertex, the main part and the V-arrangement forms Y shape.
3. lithium ionic cell positive pole ear according to claim 1, which is characterized in that the overlapping region width of the welding
For 2~20mm.
4. lithium ionic cell positive pole ear according to claim 1, which is characterized in that the weldering of welding print be 2 rows with
On.
5. lithium ionic cell positive pole ear according to claim 1, which is characterized in that the thickness of the switching aluminium strip and master
The thickness of body portion is identical.
6. lithium ionic cell positive pole ear according to claim 1, which is characterized in that two edge lengths of V-arrangement are consistent, institute
Stating v-shaped opening angle is 30 °~150 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820986957.1U CN208256797U (en) | 2018-06-26 | 2018-06-26 | A kind of lithium ionic cell positive pole ear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820986957.1U CN208256797U (en) | 2018-06-26 | 2018-06-26 | A kind of lithium ionic cell positive pole ear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208256797U true CN208256797U (en) | 2018-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820986957.1U Active CN208256797U (en) | 2018-06-26 | 2018-06-26 | A kind of lithium ionic cell positive pole ear |
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| Country | Link |
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| CN (1) | CN208256797U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113466033A (en) * | 2021-05-28 | 2021-10-01 | 曙鹏科技（深圳）有限公司 | Lithium battery tab welding tension testing method |
| CN114535796A (en) * | 2021-11-02 | 2022-05-27 | 万向一二三股份公司 | Method for welding electrode lugs on two sides of battery cell |
| CN114535775A (en) * | 2022-03-16 | 2022-05-27 | 万向一二三股份公司 | Battery welding method and battery |
-
2018
- 2018-06-26 CN CN201820986957.1U patent/CN208256797U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113466033A (en) * | 2021-05-28 | 2021-10-01 | 曙鹏科技（深圳）有限公司 | Lithium battery tab welding tension testing method |
| CN114535796A (en) * | 2021-11-02 | 2022-05-27 | 万向一二三股份公司 | Method for welding electrode lugs on two sides of battery cell |
| CN114535796B (en) * | 2021-11-02 | 2023-08-15 | 万向一二三股份公司 | Method for welding tabs on two sides of battery cell |
| CN114535775A (en) * | 2022-03-16 | 2022-05-27 | 万向一二三股份公司 | Battery welding method and battery |
| CN114535775B (en) * | 2022-03-16 | 2024-08-02 | 万向一二三股份公司 | Battery welding method and battery |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20230426 Granted publication date: 20181218 |