CN202221792U - Electrode of power battery - Google Patents
Electrode of power battery Download PDFInfo
- Publication number
- CN202221792U CN202221792U CN2011201608020U CN201120160802U CN202221792U CN 202221792 U CN202221792 U CN 202221792U CN 2011201608020 U CN2011201608020 U CN 2011201608020U CN 201120160802 U CN201120160802 U CN 201120160802U CN 202221792 U CN202221792 U CN 202221792U
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- CN
- China
- Prior art keywords
- electrode
- ears
- ear
- utility
- electrokinetic cell
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- 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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- 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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Abstract
The utility model belongs to the field of electrochemical materials and discloses an electrode of a power battery. The electrode comprises one or more than two electrode slices with same structures, wherein electrode ears are arranged on the electrode slices, and the surfaces of the electrode ears are provided with conducting layers. The electrode ears are provided with silver conductive adhesives or conductive polymers to increase the thickness of the electrode ears, then ultrasonic waves are welded or rivets are riveted with the electrode ears to form the electrode, and therefore the possibility of fracture of the electrode ears is avoided.
Description
Technical field
The utility model relates to the electrochemical material field, relates in particular to a kind of electrode of electrokinetic cell.
Background technology
Along with continuous progress in science and technology, new forms of energy constantly develop, and people are also increasing to the demand of lithium ion battery.Square lithium ion battery has that energy density is big, power density is done, has extended cycle life, applied range, memory-less effect isopreference are used new forms of energy energy storage and power vehicle aspect widely.Because lithium ion battery uses more and more widely in our daily life, people are also increasingly high to the requirement of the fail safe of this battery and reliability.
The main composition of the square lithium ion battery of current main-stream is following: positive pole, barrier film, negative pole, electrolyte, metal shell etc.Positive pole is the aluminium foil surface coating positive active material in certain size and surface roughness; Negative pole is the copper foil surface coating negative electrode active material in certain size and surface roughness; Separate with barrier film between the both positive and negative polarity, lamination, welding, fluid injection is sealed then, makes battery.But electrokinetic cell especially afterwards, but a kind of hidden danger below the existence of this electrokinetic cell:
1, electrokinetic cell shakes in the process of using easily, because copper foil of affluxion body or aluminum foil thickness are thinner, ruptures easily, causes copper foil of affluxion body or aluminium foil to rupture, and causes battery capacity on the low side, causes the integral battery door group to be scrapped;
2, when slight crack appears in copper foil of affluxion body or aluminium foil lug edge, in follow-up use, quicken the fracture lug along slight crack easily, the lug of fracture can further destroy the fracture of other collector lugs;
3, traditional built-in multilayer lug is in the process of welding, and outer lug ruptures easily.
The common method that addresses the above problem at present is that the shape that adopts ultrasonic bonding perhaps to change lug solves this problem, but effect is little, is difficult to fundamentally clear up problem, especially the 2nd problem above determining; Therefore, finding a kind of lug that solves is vital because of the reliability that vibrations fracture method improves electrokinetic cell.
The utility model content
The purpose of the utility model is to provide a kind of electrode that can effectively prevent the electrokinetic cell of electrode ear fracture.
The technical scheme of the utility model is following:
A kind of electrode of electrokinetic cell; This electrode electrode slice that comprise one or more, that have identical square structure; One jiao of end of electrode slice is provided with the electrode ear that is used for external wire; And the conductive layer that thickness is 10～40um is set on one or two surface of electrode ear, in order to increase the thickness of electrode ear, can avoid preventing the further possibility of fracture of electrode ear; Wherein, the material of conductive layer is conductive silver glue or conducting polymer.
Above-mentioned electrode is provided with the barrier film that thickness is 10～40um between each electrode slice.
If above-mentioned electrode is that then the electrode ear is riveted each other or supersonic welding is connected together through being provided with between the electrode slice when superposeing formation through plural square-shaped electrode sheet with same structure.
The electrode of the electrokinetic cell of the utility model, through at the electrode ear conductive silver glue or conducting polymer being set, once to power up the thickness of lug, ultrasonic bonding or rivet electrode ear form electrode then, thereby reach the possibility of avoiding the fracture of electrode ear.
Description of drawings
The electrode structure sketch map of Fig. 1 electrokinetic cell that to be the utility model be made up of a plurality of electrode slices;
Fig. 2 is the cutaway view of electrode ear in the electrode of the utility model electrokinetic cell.
Embodiment
Below in conjunction with accompanying drawing, further explain is done in the preferred embodiment of the utility model.
The electrode of a kind of electrokinetic cell that the utility model provides; As illustrated in fig. 1 and 2; This electrode electrode slice 1 that comprise one or more, that have identical square structure, one jiao of end of electrode slice is provided with the electrode ear 2 that is used for external wire, and this electrode ear 2 also is square; Also can be circular or oval or other shapes; The conductive layer 21 that thickness is 10～40um is set on one or two surface of electrode ear 2 simultaneously,, can avoids preventing the further possibility of fracture of electrode ear in order to increase the thickness of electrode ear 2; Wherein, the material of conductive layer is conductive silver glue or conducting polymer.
Above-mentioned conductive layer 21 is to be prepared on the electrode ear 2 through dipping process, needs through dip-coating, drying, dip-coating, dry again, and repeated multiple times, could obtain thickness is the conductive layer 21 of 10～40um.
Above-mentioned electrode, being provided with thickness between each electrode slice 1 is the barrier film 11 of 10～40um.
If above-mentioned electrode is that then electrode ear 2 is riveted each other or supersonic welding is connected together through being provided with between the electrode slice when superposeing formation through plural square-shaped electrode sheet 1 with same structure.
The electrode of the electrokinetic cell of the utility model, through at the electrode ear conductive silver glue or conducting polymer being set, once to power up the thickness of lug, ultrasonic bonding or rivet electrode ear form electrode then, thereby reach the possibility of avoiding the fracture of electrode ear; Help improving the reliability in the battery use like this, the life-span of too high battery.
Should be understood that above-mentioned statement to the utility model preferred embodiment is comparatively detailed, can not therefore think the restriction to the utility model scope of patent protection, the scope of patent protection of the utility model should be as the criterion with accompanying claims.
Claims (2)
1. the electrode of an electrokinetic cell; This electrode electrode slice that comprise one or more, that have same structure; One jiao of end of said electrode slice is provided with the electrode ear that is used for external wire; It is characterized in that be provided with conductive layer on one or two surface of said electrode ear, said conductive layer thickness is 10～40um; Said electrode slice is square.
2. electrode according to claim 1 is characterized in that, is provided with barrier film between the said electrode slice, and said membrane thicknesses is 10～40um.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201608020U CN202221792U (en) | 2011-05-18 | 2011-05-18 | Electrode of power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201608020U CN202221792U (en) | 2011-05-18 | 2011-05-18 | Electrode of power battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202221792U true CN202221792U (en) | 2012-05-16 |
Family
ID=46043813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201608020U Expired - Fee Related CN202221792U (en) | 2011-05-18 | 2011-05-18 | Electrode of power battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202221792U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106450157A (en) * | 2016-11-14 | 2017-02-22 | 深圳拓邦股份有限公司 | Pole piece component, electric core and battery |
-
2011
- 2011-05-18 CN CN2011201608020U patent/CN202221792U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106450157A (en) * | 2016-11-14 | 2017-02-22 | 深圳拓邦股份有限公司 | Pole piece component, electric core and battery |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120516 Termination date: 20190518 |