CN110085798A - A kind of special-shaped positive and negative anodes tab and lithium ion battery avoiding large current charge - Google Patents
A kind of special-shaped positive and negative anodes tab and lithium ion battery avoiding large current charge Download PDFInfo
- Publication number
- CN110085798A CN110085798A CN201910475613.3A CN201910475613A CN110085798A CN 110085798 A CN110085798 A CN 110085798A CN 201910475613 A CN201910475613 A CN 201910475613A CN 110085798 A CN110085798 A CN 110085798A
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- CN
- China
- Prior art keywords
- negative anodes
- narrows
- tab
- special
- large current
- 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.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Materials Engineering (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The present invention discloses a kind of special-shaped positive and negative anodes tab and lithium ion battery for avoiding large current charge, and the abnormal shape positive and negative anodes tab is that narrowed areas is arranged on conventional positive and negative anodes tab, and the vacancy that narrows by the narrowed areas is electrically connected with switching diode.The present invention is by allowing tab locally to narrow, a concave notch is cut in normal positive and negative anodes tab side, a switching diode is connected in concave indentation, there, when being charged, switching diode is in reverse-conducting, switching diode cannot allow electric current to pass through, and the electric current area that can only locally narrow from tab passes through；And when discharging, switching diode is in forward conduction, and electric current can flow through switching diode and the local area that narrows simultaneously, does not influence aluminum-shell battery normal work；Electric current can only pass through from the local area that narrow when due to charging, and tab locally narrows, and battery polarization increases, and large current charge can be rapidly achieved upper limit voltage, into constant voltage charging phase until completely filling end, it is avoided that aluminum-shell battery is by large current charge.
Description
Technical field
The present invention relates to technical field of lithium ion, in particular to a kind of special-shaped positive and negative anodes pole for avoiding large current charge
Ear and the lithium ion battery being made from it.
Background technique
Fig. 1 is the existing conventional positive and negative anodes tab 1 used, wherein positive pole ear material is metallic aluminium, negative lug material
For metallic nickel, the prior art is to make circular through hole at conventional positive and negative anodes tab center, after punching positive and negative anodes tab forms battery, into
Electric current can may only limit simultaneously charging and discharging currents and play protection to battery by non-perforated area when row high current charge-discharge
Effect, but this method is exactly not have selectivity for charging and discharging currents, while limiting and putting there are larger drawback
Electric current can only be discharged by low current, and normal use will receive influence in subsequent production.
Summary of the invention
In view of the problems of the existing technology, the present invention provide a kind of special-shaped positive and negative anodes tab for avoiding large current charge and
The lithium ion battery being made from it.The present invention is only selective to charging current, plays a protective role to battery, while can be just
It is often large current discharge, is not influenced its discharge performance.
To achieve the above object, the specific technical solution of the present invention is as follows:
A kind of special-shaped positive and negative anodes tab avoiding large current charge, on conventional positive and negative anodes tab be arranged narrowed areas and its
The vacancy that narrows left, the vacancy that narrows by the narrowed areas are electrically connected with several switching diodes in the same direction, and connection is not
The both ends to narrow, when its forward conduction, the vacancy that narrows can be worked normally, and when its reverse-conducting, the vacancy that narrows is in disconnected
Line state.
Preferably, the switching diode quantity is 1, is welded in the vacancy that narrows.
Preferably, the switching diode quantity is 2 or more, and parallel connection in the same direction is welded on the vacancy that narrows.
Preferably, the narrowed areas is band concave relief configuration, and the vacancy that narrows is indentation, there.
The present invention also provides a kind of lithium ion batteries, are prepared by above-mentioned special-shaped positive and negative anodes tab.
The present invention is a concave notch to be cut in normal positive and negative anodes tab side, recessed by allowing tab locally to narrow
Type indentation, there connects a switching diode, and when being charged, switching diode is in reverse-conducting, and switching diode cannot
Electric current is allowed to pass through, the electric current area that can only locally narrow from tab passes through；And when discharging, switching diode is in forward conduction, electric current
Switching diode and the local area that narrows can be flowed through simultaneously, do not influence aluminum-shell battery normal work；Electric current can only when due to charging
Pass through from the local area that narrows, tab locally narrows, and battery polarization increases, and large current charge can be rapidly achieved upper limit voltage, enters
Constant voltage charging phase is until completely fill end, it is avoided that aluminum-shell battery is by large current charge.
Detailed description of the invention
Fig. 1 is the positive and negative anodes tab main view of the prior art；
Fig. 2 is the special-shaped positive pole ear main view of the present invention；
Fig. 3 is that the special-shaped positive pole ear of the present invention makes schematic diagram；
Fig. 4 is the special-shaped negative lug main view of the present invention；
Fig. 5 is that the special-shaped negative lug of the present invention makes schematic diagram.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further described.
Referring to Fig. 2 to Fig. 5, the present invention provides the positive and negative anodes tab that a kind of abnormal shape avoids large current charge, conventional positive and negative
The vacancy that narrows that narrowed areas is arranged on the tab of pole and its leaves, the vacancy that narrows by the narrowed areas is electrically connected with several
Switching diode 204,304 in the same direction connects the both ends not narrowed, and when its forward conduction, the vacancy that narrows can carry out normal work
Make, when its reverse-conducting, the vacancy that narrows is in off state.
The narrowed areas is band concave relief configuration, and the vacancy that narrows is indentation, there.
In the present invention, the switching diode can be welded on the vacancy that narrows for multiple parallel connections in the same direction, or and 1,
It is illustrated below with 1 for specific embodiment.
Referring to figs. 2 to Fig. 3, special-shaped positive pole ear is connected by first connecting portion 202, second connecting portion 203, third in the present invention
Socket part 206 and switching diode 204 form；It locally cuts out a concave notch in conventional cathode ear to narrow by its part, office
The area that narrows, portion is half that 203 width of second connecting portion is former tab；The positive pole ear indentation, there of concave notch will be had
Upper switch diode 204 is welded, after the completion of welding, one layer of protection of neoprene 205 is coated in 204 outer layer of switching diode and applies
Layer, it is therefore an objective to prevent electrolytic corrosion switching diode 204, special-shaped positive pole ear of the invention completes；
With reference to Fig. 4 to Fig. 5, special-shaped negative lug is mainly by first connecting portion 302, second connecting portion 303, the in the present invention
Three interconnecting pieces 306 and switching diode 304 form；A concave notch is locally cut out in conventional anode ear locally to become by it
Narrow, the area that locally narrows is the half that 303 width of second connecting portion is former tab；Negative lug with concave notch is lacked
Upper switch diode 304 is welded at mouthful, after the completion of welding, is coated one layer of protection of neoprene 305 in switching diode outer layer and is applied
Layer, it is therefore an objective to prevent electrolytic corrosion switching diode 304, special-shaped negative lug of the invention completes；
The special-shaped positive and negative anodes tab of the invention made of above-mentioned technology, according to normal manufacture craft, by above-mentioned abnormal shape
Positive and negative anodes tab is assembled into aluminum-shell battery, and when carrying out large current charge to aluminum-shell battery, switching diode 204,304 is reversely led
Logical, internal resistance is larger, is off state, electric current can only pass through from special-shaped positive and negative anodes tab second connecting portion 203,303, due to abnormal shape
Positive and negative anodes tab second connecting portion 203,303 narrows, and compared with the normal positive and negative anodes tab of Fig. 1, locally narrows and increases battery core
Polarization, aluminum-shell battery can be rapidly achieved upper limit voltage, into constant voltage charging phase, until completely filling end；So this part narrows
The positive and negative anodes tab of outside connected switch diode 204,304 can play the protective effect to battery to avoid by large current charge；When
When being discharged, switching diode 204,304 is in forward conduction, and internal resistance is smaller, and electric current can flow through switching diode simultaneously
204,304 and second connecting portion 203,303, it will not influence aluminum-shell battery normal work.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all at this
Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly
It is included in other related technical areas in scope of patent protection of the invention.
Claims (5)
1. a kind of special-shaped positive and negative anodes tab for avoiding large current charge, which is characterized in that be arranged on conventional positive and negative anodes tab and become
Narrow region and its vacancy that narrows left, the vacancy that narrows by the narrowed areas are electrically connected with several two poles of switch in the same direction
Pipe connects the both ends not narrowed, and when its forward conduction, the vacancy that narrows can be worked normally, and when its reverse-conducting, narrow sky
Position is in off state.
2. the special-shaped positive and negative anodes tab according to claim 1 for avoiding large current charge, which is characterized in that the switch two
Pole pipe quantity is 1, is welded in the vacancy that narrows.
3. the special-shaped positive and negative anodes tab according to claim 1 for avoiding large current charge, which is characterized in that the switch two
Pole pipe quantity is 2 or more, and parallel connection in the same direction is welded on the vacancy that narrows.
4. the special-shaped positive and negative anodes tab according to claim 2 or 3 for avoiding large current charge, which is characterized in that the change
Narrow region is band concave relief configuration, and the vacancy that narrows is indentation, there.
5. a kind of lithium ion battery, which is characterized in that it uses the described in any item special-shaped positive and negative anodes tab systems of claim 1-4
It is standby.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910475613.3A CN110085798A (en) | 2019-05-31 | 2019-05-31 | A kind of special-shaped positive and negative anodes tab and lithium ion battery avoiding large current charge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910475613.3A CN110085798A (en) | 2019-05-31 | 2019-05-31 | A kind of special-shaped positive and negative anodes tab and lithium ion battery avoiding large current charge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110085798A true CN110085798A (en) | 2019-08-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910475613.3A Pending CN110085798A (en) | 2019-05-31 | 2019-05-31 | A kind of special-shaped positive and negative anodes tab and lithium ion battery avoiding large current charge |
Country Status (1)
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| CN (1) | CN110085798A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204375830U (en) * | 2014-12-10 | 2015-06-03 | 山东精工电子科技有限公司 | A kind of lithium ion battery |
| CN105489826A (en) * | 2015-11-30 | 2016-04-13 | 江门市拓联电子科技有限公司 | Lithium battery tab with overcurrent automatic-fusing function |
| CN106252577A (en) * | 2016-08-31 | 2016-12-21 | 襄阳艾克特电池科技股份有限公司 | A kind of explosion-proof lug of lithium battery |
| CN109616608A (en) * | 2018-12-14 | 2019-04-12 | 宁德新能源科技有限公司 | Battery, electronic equipment and battery pack |
-
2019
- 2019-05-31 CN CN201910475613.3A patent/CN110085798A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204375830U (en) * | 2014-12-10 | 2015-06-03 | 山东精工电子科技有限公司 | A kind of lithium ion battery |
| CN105489826A (en) * | 2015-11-30 | 2016-04-13 | 江门市拓联电子科技有限公司 | Lithium battery tab with overcurrent automatic-fusing function |
| CN106252577A (en) * | 2016-08-31 | 2016-12-21 | 襄阳艾克特电池科技股份有限公司 | A kind of explosion-proof lug of lithium battery |
| CN109616608A (en) * | 2018-12-14 | 2019-04-12 | 宁德新能源科技有限公司 | Battery, electronic equipment and battery pack |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190802 |