CN203895532U - Lithium battery positive tab - Google Patents
Lithium battery positive tab Download PDFInfo
- Publication number
- CN203895532U CN203895532U CN201420139076.8U CN201420139076U CN203895532U CN 203895532 U CN203895532 U CN 203895532U CN 201420139076 U CN201420139076 U CN 201420139076U CN 203895532 U CN203895532 U CN 203895532U
- Authority
- CN
- China
- Prior art keywords
- lug
- thickness
- lithium battery
- anode ear
- tab
- 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
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 38
- 239000004411 aluminium Substances 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 230000007704 transition Effects 0.000 description 9
- 239000002131 composite material Substances 0.000 description 5
- 210000000959 ear middle Anatomy 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 150000002736 metal compounds Chemical group 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- KRLDNBXEMNGJGG-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[AlH3].[Cu] KRLDNBXEMNGJGG-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000013021 overheating Methods 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 239000002905 metal composite material Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 230000002459 sustained effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- UOPKUBWYNRRQFZ-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[AlH3].[Cu].[Cu].[Cu] UOPKUBWYNRRQFZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- -1 nickel-aluminium-copper-aluminium-nickel Chemical compound 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
Classifications
-
- 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 lithium battery positive tab, which aims at solving the problem of the safety accident caused by the continuous short circuit of the lithium battery because the thickness of the positive tab of the existing lithium battery is identical in the length direction and the tab cannot be fused when the short circuit happens outside the lithium battery. The lithium battery positive tab is characterized in that a positive tab main body is divided into an upper tab, a middle tab and a lower tab along the length direction, wherein the thickness of the middle tab or the thickness of the lower tab is smaller than that of the upper tab. When the short circuit happens outside the lithium battery, the tab can be automatically fused, so that the safety performance of the lithium battery can be improved.
Description
Technical field
The utility model belongs to lithium battery field, is specifically related to a kind of lithium battery anode ear, and the design by structure can improve lithium battery fail safe.
Background technology
World energy sources and Environmental Protection Situation day are becoming tight, and battery is more and more subject to people's favor as power source.Lithium ion battery is because its energy density is high, and volume is little, lightweight, environment friendly and pollution-free, and the remarkable advantages such as memory-less effect progressively become the first-selection of energy field.In the economic policy of carrying out at present, one of energy supply system that new-energy automobile adopts is exactly lithium ionic cell module, and the development of lithium ion battery more and more highlights in the importance of energy field.
The utility model patent that for example application number is 201220089016.0 discloses a kind of anode ear of lithium battery of aluminum-plastic composite membrane packing, it is characterized in that, it is metal compound belt, the exposed skin of metal compound belt is aluminium lamination, metal compound belt is three layers of composite band of aluminium-copper-aluminium, and its intermediate course is copper layer.
Application number is anode ear and the method for manufacturing technology thereof that 201210062344.6 patent of invention discloses a kind of novel lithium battery, this anode ear comprises metal compound belt, metal composite band body comprises two ends, and two ends are three layers of composite band of one section of aluminium-copper-aluminium and another section of copper-aluminium-copper-aluminium-copper or five layers of composite band of nickel-aluminium-copper-aluminium-nickel; One section of exposed outside of described metal composite band body be aluminium lamination, all the other one section is exposed to outside is copper layer or nickel dam; Described copper layer or nickel dam are compound in the skin of three layers of composite band of aluminium-copper-aluminium.
Yet lithium battery exists certain hidden danger aspect fail safe, safety problem has hindered the development of dynamic lithium battery.Thickness is identical in the longitudinal direction for existing lithium battery anode ear, and when outside batteries is short-circuited, lug can not fuse, thereby short circuit continues to cause battery persistently overheating, even causes blast on fire.Based on above reason, main purpose of the present utility model is to provide the lug of the lithium battery that a kind of security performance is high.
Utility model content
The utility model is in order to solve existing lithium battery anode ear because thickness on length direction is identical, when lithium battery outside is short-circuited, the problem that lug can not fuse and cause continuing lithium battery short circuit and cause security incident, and provide a kind of lithium battery anode ear, when lithium battery external short circuit, lug can fuse automatically, thereby improves the security performance of lithium battery.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is:
A lithium battery anode ear, comprises anode ear main body, it is characterized in that, described anode ear main body is divided into top lug, middle part lug and bottom lug along its length, and the thickness of the Thickness Ratio top lug of described middle part lug or bottom lug is little.
Further, transition arc between described anode ear main body and middle part lug or bottom lug.
Further, the thickness of described middle part lug or bottom lug thinnest part is 10%-80% of top lug thickness.
Further, the thickness of described middle part lug or bottom lug thinnest part is 40%～60% of top lug thickness.
Further, described anode ear main body is made by aluminium.
Compared with prior art, the utlity model has following beneficial effect:
The thickness of the Thickness Ratio top lug of the middle part lug of anode ear of the present utility model or bottom lug is little, and the middle part of anode ear main body or bottom have local slim structure, and middle part lug or bottom lug are less than the thickness at other positions of anode ear.When short circuit appears in lithium battery, the partially thin place of anode ear Joule heat is large, and meeting is prior to anode ear main body fusing open circuit, thus the fail safe that improves lithium battery.Prevent that lithium battery from causing the persistently overheating appearance that causes blast on fire because of sustained short-circuit.
Transition arc between anode ear main body of the present utility model and middle part lug or bottom lug, when working as the thinner thickness of middle part lug, transition arc between top lug, bottom lug and middle part lug, in the time of the thinner thickness of bottom lug, transition arc between middle part lug and bottom lug; Other position transition arcs of the local thin type structure of anode ear and anode ear, make to there will not be the concentrated situation of stress between the utility model local slim and anode ear main body, thus the useful life of raising anode ear.
If thickness is too thin, lithium battery is the discharge capability deviation of large electric current in normal operation; If thickness is too thick, during short circuit, lug is not easy fusing.The thickness of middle part of the present utility model lug or bottom lug thinnest part is 10%-80% of anode ear body thickness; As the preferred mode of the utility model, the thickness of middle part lug or bottom lug thinnest part is 40%～60% of anode ear body thickness, the discharge capability that can both guarantee anode ear main body, while guaranteeing short circuit again, lug can fuse, and improves practicality of the present utility model.
As the mode of a kind of selection of the present utility model, anode ear main body is made by aluminium.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model one embodiment, and the thickness of the bottom lug of the present embodiment is less than the thickness of anode ear main body;
Fig. 2 is the structural representation of another embodiment of the utility model, and the thickness of the middle part lug of the present embodiment is less than the thickness of anode ear main body;
Mark in figure: 1, anode ear main body, 2, top lug, 3, middle part lug, 4, transition arc, 5, bottom lug.
Embodiment
Below in conjunction with embodiment, the utility model will be further described, and described embodiment is only the utility model part embodiment, is not whole embodiment.Embodiment based in the utility model, those of ordinary skill in the art, not making other embodiment used that obtain under creative work prerequisite, belongs to protection range of the present utility model.
The thickness of the Thickness Ratio top lug of the middle part lug of anode ear of the present utility model or bottom lug is little, the middle part or the bottom that are anode ear main body have local slim structure, when there is short circuit in lithium battery, the partially thin place of anode ear Joule heat is large, meeting is prior to anode ear main body fusing open circuit, thus the fail safe that improves lithium battery.Prevent that lithium battery from causing the persistently overheating appearance that causes blast on fire because of sustained short-circuit.For the length of the local thin type structure of anode ear main body, the length of middle part lug, bottom lug does not have special requirement, and those skilled in the art can understand, the length of anode ear can be made according to practical application.
Transition arc between anode ear main body of the present utility model and middle part lug or bottom lug, when working as the thinner thickness of middle part lug, transition arc between top lug, bottom lug and middle part lug, in the time of the thinner thickness of bottom lug, transition arc between middle part lug and bottom lug.Make to there will not be the concentrated situation of stress between the utility model local slim and anode ear main body, thus the useful life of raising anode ear.
If thickness is too thin, lithium battery is the discharge capability deviation of large electric current in normal operation; If thickness is too thick, during short circuit, lug is not easy fusing.The thickness of middle part of the present utility model lug or bottom lug thinnest part is 10%-80% of top lug thickness; As the preferred mode of the utility model, the thickness of middle part lug or bottom lug thinnest part is 40%～60% of top lug thickness, should guarantee the discharge capability of anode ear main body, while guaranteeing short circuit again, lug can fuse, need to do a large amount of calculation and tests, for a person skilled in the art, be not apparent, need to pay creative work.
As the mode of a kind of selection of the present utility model, anode ear main body is made by aluminium.
Below in conjunction with embodiment, the utility model is described further.
Embodiment mono-
Battery capacity is 20Ah, and anode ear body thickness is 0.3mm, and thin place, anode ear middle part thickness is 0.25mm, and the thin place of lug partial-length is 2～4mm;
Embodiment bis-
Battery capacity is 20Ah, and positive pole ear body thickness is 0.3mm, and anode ear bottom thin place thickness is 0.25mm, and the thin place of lug partial-length is 2～4mm;
Embodiment tri-
Battery capacity is 20Ah, and positive pole ear body thickness is 0.3mm, and thin place, anode ear middle part thickness is 0.20mm, and the thin place of lug partial-length is 2～4mm;
Embodiment tetra-
Battery capacity is 20Ah, and positive pole ear body thickness is 0.3mm, and anode ear bottom thin place thickness is 0.20mm, and the thin place of lug partial-length is 2～4mm;
Embodiment five
Battery capacity is 20Ah, and positive pole ear body thickness is 0.3mm, and thin place, anode ear middle part thickness is 0.15mm, and the thin place of lug partial-length is 2～4mm;
Embodiment six
Battery capacity is 20Ah, and positive pole ear body thickness is 0.3mm, and anode ear bottom thin place thickness is 0.15mm, and the thin place of lug partial-length is 2～4mm;
Embodiment seven
Battery capacity is 20Ah, and positive pole ear body thickness is 0.3mm, and thin place, anode ear middle part thickness is 0.10mm, and the thin place of lug partial-length is 2～4mm;
Embodiment eight
Battery capacity is 20Ah, and positive pole ear body thickness is 0.3mm, and anode ear bottom thin place thickness is 0.10mm, and the thin place of lug partial-length is 2～4mm;
Embodiment nine
Battery capacity is 20Ah, and positive pole ear body thickness is 0.3mm, and thin place, anode ear middle part thickness is 0.05mm, and the thin place of lug partial-length is 2～4mm;
Embodiment ten
Battery capacity is 20Ah, and positive pole ear body thickness is 0.3mm, and anode ear bottom thin place thickness is 0.05mm, and the thin place of lug partial-length is 2～4mm;
Contrast groups:
Battery capacity is 20Ah, and anode ear main body everywhere thickness is 0.3mm;
In all tests, battery is except positive pole ear structure difference, and battery is all identical.
Above-described embodiment is of the present utility model enumerating, and is not of the present utility modelly all to enumerate, and is not departing under thought main body of the present utility model, and the improvement of having done all belongs to protection range of the present utility model.
Claims (4)
1. a lithium battery anode ear, comprise anode ear main body (1), it is characterized in that, described anode ear main body (1) is divided into top lug (2), middle part lug (3) and bottom lug (5) along its length, the thickness of the Thickness Ratio top lug (2) of described middle part lug (3) or bottom lug (5) is little.
2. lithium battery anode ear according to claim 1, is characterized in that, the thickness of described middle part lug (3) or bottom lug (5) thinnest part is 10%-80% of top lug (2) thickness.
3. lithium battery anode ear according to claim 1 and 2, is characterized in that, the thickness of described middle part lug (3) or bottom lug (5) thinnest part is 40%～60% of top lug thickness.
4. lithium battery anode ear according to claim 3, is characterized in that, described anode ear main body (1) is made by aluminium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420139076.8U CN203895532U (en) | 2014-03-24 | 2014-03-24 | Lithium battery positive tab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420139076.8U CN203895532U (en) | 2014-03-24 | 2014-03-24 | Lithium battery positive tab |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203895532U true CN203895532U (en) | 2014-10-22 |
Family
ID=51721893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420139076.8U Expired - Fee Related CN203895532U (en) | 2014-03-24 | 2014-03-24 | Lithium battery positive tab |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203895532U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428590A (en) * | 2015-12-18 | 2016-03-23 | 山东精工电子科技有限公司 | Treatment method for cathode lug of lithium battery |
| CN108123091A (en) * | 2016-11-30 | 2018-06-05 | 宝山钢铁股份有限公司 | A kind of nearly cross-section gradually modification lug |
| CN114069165A (en) * | 2021-11-16 | 2022-02-18 | 远景动力技术(江苏)有限公司 | Battery core tab and battery core |
-
2014
- 2014-03-24 CN CN201420139076.8U patent/CN203895532U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428590A (en) * | 2015-12-18 | 2016-03-23 | 山东精工电子科技有限公司 | Treatment method for cathode lug of lithium battery |
| CN108123091A (en) * | 2016-11-30 | 2018-06-05 | 宝山钢铁股份有限公司 | A kind of nearly cross-section gradually modification lug |
| CN108123091B (en) * | 2016-11-30 | 2021-02-19 | 宝山钢铁股份有限公司 | Nearly equal sectional area gradual change formula utmost point ear |
| CN114069165A (en) * | 2021-11-16 | 2022-02-18 | 远景动力技术(江苏)有限公司 | Battery core tab and battery core |
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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: 20141022 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |