CN202076366U - Positive-negative connecting tab for in-series connection of adjacent electric cores in lithium-ion power battery - Google Patents
Positive-negative connecting tab for in-series connection of adjacent electric cores in lithium-ion power battery Download PDFInfo
- Publication number
- CN202076366U CN202076366U CN2011201604570U CN201120160457U CN202076366U CN 202076366 U CN202076366 U CN 202076366U CN 2011201604570 U CN2011201604570 U CN 2011201604570U CN 201120160457 U CN201120160457 U CN 201120160457U CN 202076366 U CN202076366 U CN 202076366U
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- China
- Prior art keywords
- positive
- lithium
- electric core
- adjacent electric
- tab
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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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- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model discloses a positive-negative connecting tab for in-series connection of adjacent electric cores in a lithium-ion power battery. The positive-negative connecting tab comprises a main body made of aluminum, wherein one end of the main body is covered by a nickel-plated coating based on the aluminum. According to the utility model, the main body of the tab is made of the aluminum, so that the electric conductivity is high, the temperature rise for the tab is low when high current passes through, and meanwhile, the hardness of the aluminum tab is low with less possibility of piercing a separating film or an adjacent electric core, and the safety performance of the power battery is enhanced; and positive poles and negative poles of the adjacent electric cores can be together connected by using one tab, therefore, the workload is reduced, the cost for raw materials and labor is reduced, and the problems of difficulty in top sealing, possibility of liquid leakage and the like are avoided.
Description
Technical field
The utility model relates to a kind of lithium ion cell polar ear as electrokinetic cell, and series connection connects lug with both positive and negative polarity between the inner adjacent electric core of particularly a kind of lithium-ion-power cell.
Background technology
Along with the pay attention to day by day of country to the new forms of energy industry, ev industry as new industry by people's extensive concern.Lithium ion battery is because advantages such as energy density and power density height, long service life, environmental protection become the first-selection of the required battery of electric automobile.
Lithium-ion-power cell need satisfy high power density and two kinds of requirements of high-energy-density, mainly contains two kinds of realization means at present: a kind of is large capacity single body battery, and the output voltage of large capacity single body battery is not high, but its electric current output greatly; Another kind of for the series connection of low capacity baby battery, by the mode of low capacity baby battery series connection, can export by higher voltage and obtain higher power density.From the security performance angle, lithium-ion-power cell producer adopts the mode of low capacity baby battery series connection more at present.The series connection of low capacity baby battery can be by being together in series it in the cell outside; Also a plurality of electric cores can be composed in series a macrocell bag at inside battery.At the latter's connected mode, inevitably positive and negative lead wires between adjacent electric core need be coupled together.Electric core negative pole adopts the nickel lug to connect in the prior art, but because the conductivity of nickel is low, when using as electrokinetic cell, the temperature of lug self raises violent, causes the electric core membrane fusion when serious, causes internal short-circuit of battery; Nickel lug hardness is higher relatively simultaneously, punctures adjacent electric core easily; Connection between last adjacent cell polar ear can expend more man-hour, also can cause closedtop difficulty, problems such as easy-to-leak liquid.
The utility model content
The technical problems to be solved in the utility model provides to connect between the inner adjacent electric core of a kind of lithium-ion-power cell and connects lug with both positive and negative polarity, this lug conductivity height, big electric current by the time temperature rise lower, hardness is relatively low simultaneously, to connect simple, the cell integrated security performance of technology better.
The technical solution of the utility model is: connecting between adjacent electric core in a kind of lithium-ion-power cell connects lug with both positive and negative polarity, comprises the main body that aluminium constitutes, and wherein, an end of this main body is coated with nickel coating on the basis of aluminium.
Series connection is a strip with both positive and negative polarity connection lug between the inner adjacent electric core of described lithium-ion-power cell.
The end that described lug main body is coated with nickel coating cooperates with the negative wire welding of an electric core, and the other end cooperates with the positive wire welding of another electric core.
Series connection connects lug with both positive and negative polarity between the inner different electric cores of described lithium-ion-power cell, and its length and width coca is carried out the arbitrary proportion design according to the specific requirement of battery pole ear, and nickeliferous end length and nickel coating thickness require to design according to reality.
The utlity model has following advantage: the lug main body adopts metallic aluminium, the conductivity height, and when big electric current passed through, the lug temperature rise was lower, and the hardness of aluminium pole ears is less, is not easy to pierce through barrier film or adjacent electric core, has improved the security performance of electrokinetic cell; Adopt a lug just can connect the both positive and negative polarity of adjacent electric core in the lump simultaneously, reduced workload, reduced cost of material and labor cost, avoided problems such as closedtop difficulty and easy-to-leak liquid.
Description of drawings
Accompanying drawing is an overall schematic of the present utility model.
Among the figure, 1. electric core; 2. another electric core; 3. negative wire; 4. lug; 5. positive wire; 6. nickel crosses layer.
Embodiment
Below in conjunction with accompanying drawing structural principle of the present utility model and operation principle are described in further detail.
As shown in the figure, the utility model is that series connection connects lug 4 with both positive and negative polarity between the inner adjacent electric core of a kind of lithium-ion-power cell, this lug comprises the body layer that aluminium constitutes, this body layer one end is simple metallic aluminium, and the other end also is coated with nickel coating 6 on the basal layer of metallic aluminium, and the lug shape becomes strip.
As shown in the figure, what two electric cores 1 and 2 both positive and negative polarities were staggered is stacked together, for graphic representation clear, two electric cores electric core lead that all only draws, another electric core lead omits, 1 in the electric core negative plate negative wire 3 that draws, 2 in the electric core positive plate positive wire 5 that draws.In use,, the metallic aluminium end of lug 4 and the positive wire 5 of electric core 2 are welded together, the nickel plating end of lug 4 and the negative wire 3 of electric core 1 are welded together by ultra-sonic welded or electric welding mode.
In concrete implementation process, can choose like this and carry out:
1. cathode pole piece uses 9 μ m Copper Foils, and the anode pole piece used thickness is the aluminium foil of 16 μ m, and the lug position is reserved to jump and is coated with the district during coating sizing-agent, and dry, roll-in are cut in flakes;
2. the aluminium flake of spot welding 5mm and nickel sheet on positive plate and negative plate respectively are as positive wire 5 and negative wire 3;
3. with the both positive and negative polarity pole piece, barrier film overlaps and is wound into electric core 1 and 2;
4. electric core is put into aluminum plastic film, carry out closedtop and side seal, fluid injection changes into, degasification, partial volume with shelve;
5. get staggered being stacked together of two electric cores 1 and 2 both positive and negative polarities, the metallic aluminium end of lug 4 and the positive wire 5 of electric core 2 are welded together, the nickel plating end of lug 4 and the negative wire 3 of electric core 1 are welded together;
6. the electric core of the whole series is put into aluminum plastic film, carry out closedtop and side seal, finally obtain the electrokinetic cell bag that adopts lug that this utility model is described to connect.
The above only is the utility model better embodiment, and every any trickle modification, equivalent variations and modification of above execution mode being done according to the technical solution of the utility model all belongs in the scope of technical solutions of the utility model.
Claims (3)
- In the lithium-ion-power cell between adjacent electric core series connection connect lug with both positive and negative polarity, it is characterized in that: comprise the main body that aluminium constitutes, wherein, an end of this main body is coated with nickel coating on the basis of aluminium.
- 2. connecting between adjacent electric core in the lithium-ion-power cell according to claim 1 connects lug with both positive and negative polarity, and it is characterized in that: described lug is a strip.
- 3. connect between adjacent electric core in the lithium-ion-power cell according to claim 1 and connect lug with both positive and negative polarity, it is characterized in that: the end that described lug main body is coated with nickel coating cooperates with the negative wire welding of an electric core, and the other end cooperates with the positive wire welding of another electric core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201604570U CN202076366U (en) | 2011-05-19 | 2011-05-19 | Positive-negative connecting tab for in-series connection of adjacent electric cores in lithium-ion power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201604570U CN202076366U (en) | 2011-05-19 | 2011-05-19 | Positive-negative connecting tab for in-series connection of adjacent electric cores in lithium-ion power battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202076366U true CN202076366U (en) | 2011-12-14 |
Family
ID=45114454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201604570U Expired - Fee Related CN202076366U (en) | 2011-05-19 | 2011-05-19 | Positive-negative connecting tab for in-series connection of adjacent electric cores in lithium-ion power battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202076366U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113889718A (en) * | 2020-07-02 | 2022-01-04 | 本田技研工业株式会社 | Battery with a battery cell |
-
2011
- 2011-05-19 CN CN2011201604570U patent/CN202076366U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113889718A (en) * | 2020-07-02 | 2022-01-04 | 本田技研工业株式会社 | Battery with a battery cell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20111214 Termination date: 20190519 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |