CN206558602U - Battery core pole piece and battery core - Google Patents
Battery core pole piece and battery core Download PDFInfo
- Publication number
- CN206558602U CN206558602U CN201720271062.5U CN201720271062U CN206558602U CN 206558602 U CN206558602 U CN 206558602U CN 201720271062 U CN201720271062 U CN 201720271062U CN 206558602 U CN206558602 U CN 206558602U
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- CN
- China
- Prior art keywords
- battery core
- pole piece
- lug
- core pole
- invayination
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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
Abstract
The utility model discloses a kind of battery core pole piece, including：Lug body, lug invayination, battery core pole piece foil area；Battery core pole piece foil area specific bit is equipped with the cutting mouth of designated shape, and the foil area that the cutting mouth is surrounded is lug body, and the rectilinear connecting sections of the Origin And Destination of the cutting mouth are lug invayination；The lug body forms cell polar ear along after lug invayination reflexed.Lug in the utility model is without welding, avoid the negative effect that bad welded bands are come, the problem of conveyance capacity caused by the increase of weld resistance is limited is solved simultaneously, while also improving the charge and discharge consistency of performance of battery core, and then improves the overall performance of the battery using this lug.
Description
Technical field
The utility model is related to new energy field, especially relates to battery core pole piece and battery core.
Background technology
With the popularization of new-energy automobile, electrokinetic cell also gradually comes into huge numbers of families as the heart of new-energy automobile
Daily life in.The power type battery of high current is generally several or even hundreds of thousands of battery cores carry out connection in series-parallel group as desired
Dress is formed, the output requirement of high current, and new demand, especially battery tab structure are proposed to battery structure.Battery uses process
In potential safety hazard more appear in lug position, the conveyance capacity of lug directly affects the quality and service life of battery.
Nowadays people gradually strengthen the interest of the fast mold filling formula of battery, but this requires the conveyance capacity of battery core pole piece very
By force.Existing lug is that the aluminium flake or nickel plating copper sheet added in the foil region of pole piece by super weldering (corresponds to positive and negative electrode respectively
Piece) realize；Typically aluminium flake or nickel plating copper sheet are ultrasonically welded on foil using needle-like soldering tip, dynamics is bad to be held, and is held
Easy burn-through or not prison welding, the bottleneck of restriction pole piece conveyance capacity is exactly at tab welding.
Therefore, prior art could be improved.
Utility model content
Main purpose of the present utility model is a kind of battery core pole piece without by soldering polar ear technique soldering polar ear of offer,
Aiming to solve the problem that easily influences the conveyance capacity problem of whole lug at existing tab welding.
The utility model proposes a kind of battery core pole piece, including：Lug body, lug invayination, battery core pole piece foil area；
Battery core pole piece foil area specific bit is equipped with the cutting mouth of designated shape, and the foil area that the cutting mouth is surrounded is
Lug body, the rectilinear connecting sections of the Origin And Destination of the cutting mouth are lug invayination；
The lug body forms cell polar ear along after lug invayination reflexed.
Preferably, the battery core pole piece also includes battery core pole piece dressing area, and the lug invayination is perpendicular to battery core pole piece
The termination border in dressing area.
Preferably, the battery core pole piece also includes battery core pole piece dressing area, and the lug invayination is parallel to battery core pole piece
The termination border in dressing area.
Preferably, the cell polar ear and the overlapping region in the battery core pole piece foil area are bonded by viscose.
Preferably, the viscose is conducting resinl.
Preferably, the cutting mouth of the lug body is laser cutting mouth.
Preferably, the material in the battery pole piece foil area is one kind in fine aluminium or fine copper.
Preferably, the lug body is square shape.
The utility model also proposes a kind of battery core, including above-mentioned battery core pole piece.
The utility model effect：The utility model passes through the pole directly on foil with laser cutting specified size, shape
Ear body, then inverse folding draw lug beyond pole piece border, it is and overlapping with pole piece foil by the lug body in inverse folding
Region coat conducting resinl, further fix lug.Lug in the utility model is without welding, it is to avoid bad welded bands are come
Negative effect, while the problem of conveyance capacity caused by the increase of weld resistance is limited is solved, while also improving battery core
Charge-discharge performance uniformity, and then improve using this lug battery overall performance.And the lug in the utility model
Extra aluminium flake or nickel plating copper sheet is not needed, cost is saved；Welding procedure step is eliminated simultaneously, reduces soldering polar ear work
Sequence, improves production efficiency.
Brief description of the drawings
Battery core pole piece structure schematic diagram in the embodiment of Fig. 1 the utility model one；
Battery core pole piece structure schematic diagram in another embodiment of Fig. 2 the utility model；
Fig. 3 conventional bonding technique battery core pole piece structure schematic diagrames.
Realization, functional characteristics and the advantage of the utility model purpose will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
It should be appreciated that specific embodiment described herein is not used to limit this only to explain the utility model
Utility model.
Reference picture 1, the utility model embodiment proposes a kind of battery core pole piece, including：Lug body 1, lug invayination 21,
Battery core pole piece foil area 3；
The specific bit of battery core pole piece foil area 3 is equipped with the cutting mouth of designated shape, the foil area that the cutting mouth is surrounded
For lug body 1, the rectilinear connecting sections of the Origin And Destination of the cutting mouth are lug invayination 21；
The lug body 1 forms cell polar ear along after the reflexed of lug invayination 21.
Above-mentioned lug invayination 21 is the lug invayination that border 5 is terminated perpendicular to battery core pole piece dressing area 4, and this practicality is new
Lug invayination 22 in another embodiment of type is the lug invayination that border 5 is terminated parallel to battery core pole piece dressing area 4.
Lug is a connection, conductive, seal.Connection refers to inside and outside connection battery that conduction refers to electricity by lug
Draw and form loop, sealing refers to the sealing between the sealing between adhesive tape and metal tape and adhesive tape and plastic-aluminum packaging film.Pole
The pole piece in packaging bag that one end of ear metal tape is constituted with plastic-aluminum packaging film is connected, and the other end is extended to outside packaging sack,
One section of lug metal tape at packaging sack is coated by a glue sheet polymer composite, is answered in lug metal tape and macromolecule
Condensation material is coated and the intersection of packaging bag is also coated with one layer of liquid adhesive, the adhesive it is coatable outside packaging sack or
Interior or inside and outside coating simultaneously, a kind of cured film is formed after liquid adhesive solidification.Prevent between metal tape and aluminum plastic film
Short circuit, and be bonded together when encapsulating by heating (140 DEG C or so) and aluminum plastic film hot-melting sealed and prevent leakage.
The utility model embodiment is cut by laser the lug body 1 of specified size, shape by being used directly on foil, so
Inverse folding draws lug beyond pole piece border afterwards, and passes through the lug body 1 in inverse folding and the overlapping region in pole piece foil area 3
Conducting resinl is coated, further fixed lug body 1.Lug in the utility model is without welding, it is to avoid bad welded bands are come
Negative effect, while the problem of conveyance capacity caused by the increase of weld resistance is limited is solved, while also improving battery core
Charge and discharge consistency of performance, and then improve using this lug battery overall performance.
Further, above-mentioned battery core pole piece also includes battery core pole piece dressing area 4, and above-mentioned lug invayination 21 is perpendicular to battery core
The termination border 5 in pole piece dressing area 4, direction of the lug along the termination border 5 parallel to battery core pole piece dressing area 4 is drawn, such as Fig. 1
It is shown.
Further, above-mentioned battery core pole piece also includes battery core pole piece dressing area 4, and above-mentioned lug invayination 22 is parallel to battery core
The termination border 5 in pole piece dressing area 4, direction of the lug along the termination border 5 perpendicular to battery core pole piece dressing area 4 is drawn, such as Fig. 2
It is shown.
Lug lead direction is designed according to core strueture, and existing battery core both positive and negative polarity lug can be drawn with one end, can also be distinguished
Drawn in opposite end.Above-mentioned lug invayination 21 is perpendicular to the termination border 5 in battery core pole piece dressing area 4, and lug is along parallel to deposited
Expect that the direction on the termination border 5 in area 4 is drawn, be applicable to cylindrical core strueture；Above-mentioned lug invayination 22 is parallel to battery
The termination border 5 in pole piece dressing area 4, direction of the lug along the termination border 5 perpendicular to dressing area 4 is drawn, and is applicable to square
Core strueture, meets the demand of different battery core designs.
Further, above-mentioned lug body 1 is along after the reflexed of lug invayination 21 or 22, the lug body 1 and the electricity
The overlapping region in core pole piece foil area 3 is bonded by viscose.
Further, the viscose is conducting resinl.
Above-mentioned conducting resinl secures the position of lug body 1, prevents lug body 1 from misplacing, and prevents lug body 1 and institute
The junction for stating battery core pole piece foil area 3 is further torn, while conducting resinl is also beneficial to reduce the resistance of bonding part.
Further, the cutting mouth of above-mentioned lug body 1 is laser cutting mouth.
By being cut by laser lug body 1 in the utility model embodiment, the edge of lug body 1 is reduced to greatest extent
Burr, it is to avoid produce burr and puncture barrier film and cause short circuit.
Further, the material in above-mentioned battery pole piece foil area 3 is one kind in fine aluminium or fine copper.
It is all that also relatively common, price is more honest and cleaner because both good conductivities, quality is softer to do collector using both
Valency, while surface both can form one layer of oxide film, prevents corrosion.And the category insulation of aluminium surface oxide layer aluminum oxide
Body, oxide layer can not be conductive, but because it is very thin, electronic conductance is realized by tunnel-effect, if oxide layer is thicker, and aluminium foil is conductive
Property it is differential, or even insulation.Therefore, general collector is using being preceding desirable to, by surface clean, on the one hand wash away greasy dirt, simultaneously
Thick oxide layer can be removed.But aluminium foil cannot act as that lithium-aluminium alloy can occur under negative pole, low potential, so negative current collector is pure
Copper.Collector requires that material is high, and the composition of aluminium is impure to be caused skin covering of the surface not fine and close and occur spot corrosion, more very due to table
The destruction of facial mask causes to generate lithium-aluminium alloy.
Further, above-mentioned lug body 1 is shaped as square shape.
Above-mentioned lug body 1 is square shape, and the lug of convenient use this battery core pole piece is welded with battery core manager to be connected
Connect.
Above-mentioned cell polar ear can be used for battery core both positive and negative polarity pole piece, reference picture 1 and Fig. 3, and this lug is saved compared with traditional lug
The solder contacts 6 between lug and pole piece are omited, it is possible to increase the consistent controllability of pole piece, have improved the electric current handling capacity of lug, fitted
For large current density battery core, while also improving the lot stability between battery core, be conducive to extending making for connection in series-parallel assembling battery core
Use the life-span.
The utility model embodiment also proposes a kind of battery core, including above-mentioned battery core pole piece.
Contact resistance in above-mentioned battery core at lug is only 0.3 milliohm or so, hence it is evident that less than connecing for conventional soldering polar ear
Get an electric shock and hinder, while battery core is compared with the identical capacity of conventional soldering techniques, the battery core of size in the utility model embodiment, thickness
Significantly reduce, with uniformity and charge/discharge capacity, the voltage change of the static properties such as the internal resistance between batch battery core, open-circuit voltage
Uniformity significantly improve.
The utility model embodiment effect：The utility model embodiment with laser cutting directly on foil by specifying chi
Very little, shape lug body, then inverse folding draw lug beyond pole piece border, and by the lug body of inverse folding and pole
Conducting resinl is coated in the overlapping region of piece foil, further fixed lug body.Lug body in the utility model embodiment without
Need welding, it is to avoid the negative effects that bad welded bands are come, at the same solve conveyance capacity caused by the increase of weld resistance by
The problem of limit, while also improving the charge and discharge consistency of performance of battery core, and then improve the overall performance of the battery of this practical lug.
And the lug in the utility model embodiment does not need extra aluminium flake or nickel plating copper sheet, and eliminate welding procedure step
Suddenly, cost is saved, while reducing process, production efficiency is improved.
Preferred embodiment of the present utility model is the foregoing is only, the scope of the claims of the present utility model is not thereby limited,
Equivalent structure or equivalent flow conversion that every utilization the utility model specification and accompanying drawing content are made, or directly or indirectly fortune
Used in other related technical fields, similarly it is included in scope of patent protection of the present utility model.
Claims (9)
1. a kind of battery core pole piece, it is characterised in that including：Lug body, lug invayination, battery core pole piece foil area；
Battery core pole piece foil area specific bit is equipped with the cutting mouth of designated shape, and the foil area that the cutting mouth is surrounded is lug
Body, the rectilinear connecting sections of the Origin And Destination of the cutting mouth are lug invayination；
The lug body forms cell polar ear along after lug invayination reflexed.
2. battery core pole piece according to claim 1, it is characterised in that also including battery core pole piece dressing area, the lug is anti-
Termination border of the folding part perpendicular to battery core pole piece dressing area.
3. battery core pole piece according to claim 1, it is characterised in that also including battery core pole piece dressing area, the lug is anti-
Termination border of the folding part parallel to battery core pole piece dressing area.
4. battery core pole piece according to claim 1, it is characterised in that the cell polar ear and the battery core pole piece foil area
Overlapping region bonded by viscose.
5. battery core pole piece according to claim 4, it is characterised in that the viscose is conducting resinl.
6. battery core pole piece according to claim 1, it is characterised in that the cutting mouth of the lug body is laser cutting
Mouthful.
7. battery core pole piece according to claim 1, it is characterised in that the material in the battery pole piece foil area be fine aluminium or
One kind in fine copper.
8. battery core pole piece according to claim 1, it is characterised in that the lug body is square shape.
9. a kind of battery core, it is characterised in that including the battery core pole piece any one of claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720271062.5U CN206558602U (en) | 2017-03-20 | 2017-03-20 | Battery core pole piece and battery core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720271062.5U CN206558602U (en) | 2017-03-20 | 2017-03-20 | Battery core pole piece and battery core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206558602U true CN206558602U (en) | 2017-10-13 |
Family
ID=60365836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720271062.5U Active CN206558602U (en) | 2017-03-20 | 2017-03-20 | Battery core pole piece and battery core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206558602U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108531118A (en) * | 2018-03-29 | 2018-09-14 | 深圳瑞隆新能源科技有限公司 | A kind of conduction glue caking agent and preparation method thereof, soft-package battery plate lug connecting method |
| CN109888161A (en) * | 2018-09-11 | 2019-06-14 | 拓迪化学(上海)有限公司 | A kind of electrode plates and battery battery core |
| CN114583410A (en) * | 2022-03-15 | 2022-06-03 | 新余赣锋电子有限公司 | Conductive adhesive tab, preparation method of conductive adhesive tab and lithium ion battery cell |
-
2017
- 2017-03-20 CN CN201720271062.5U patent/CN206558602U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108531118A (en) * | 2018-03-29 | 2018-09-14 | 深圳瑞隆新能源科技有限公司 | A kind of conduction glue caking agent and preparation method thereof, soft-package battery plate lug connecting method |
| CN109888161A (en) * | 2018-09-11 | 2019-06-14 | 拓迪化学(上海)有限公司 | A kind of electrode plates and battery battery core |
| CN109888161B (en) * | 2018-09-11 | 2022-03-29 | 拓迪化学(上海)有限公司 | Electrode plate and battery cell |
| CN114583410A (en) * | 2022-03-15 | 2022-06-03 | 新余赣锋电子有限公司 | Conductive adhesive tab, preparation method of conductive adhesive tab and lithium ion battery cell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181113 Address after: 518000 1-2 Floor, Building A, Xinwangda Industrial Park, No. 18 Tangjianan Road, Gongming Street, Guangming New District, Shenzhen City, Guangdong Province Patentee after: SUNWODA ELECTRIC VEHICLE BATTERY Co.,Ltd. Address before: 518000, 1st floor, 2nd floor, A-B area, 2nd floor, D area-9th floor, Yihe Road, Shiyan Street, Baoan District, Shenzhen City, Guangdong Province Patentee before: SUNWODA ELECTRONICS Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518000 1-2 Floor, Building A, Xinwangda Industrial Park, No. 18 Tangjianan Road, Gongming Street, Guangming New District, Shenzhen City, Guangdong Province Patentee after: Xinwangda Power Technology Co.,Ltd. Address before: 518000 1-2 Floor, Building A, Xinwangda Industrial Park, No. 18 Tangjianan Road, Gongming Street, Guangming New District, Shenzhen City, Guangdong Province Patentee before: SUNWODA ELECTRIC VEHICLE BATTERY Co.,Ltd. |