CN202308135U - Negative pole piece and lug structure for power battery - Google Patents
Negative pole piece and lug structure for power battery Download PDFInfo
- Publication number
- CN202308135U CN202308135U CN2011203725029U CN201120372502U CN202308135U CN 202308135 U CN202308135 U CN 202308135U CN 2011203725029 U CN2011203725029 U CN 2011203725029U CN 201120372502 U CN201120372502 U CN 201120372502U CN 202308135 U CN202308135 U CN 202308135U
- Authority
- CN
- China
- Prior art keywords
- negative
- copper foil
- pole piece
- negative pole
- lug
- 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 - Lifetime
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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 negative pole piece and lug structure for a power battery, which is used for increasing current collectors of a battery pole piece and reasonably distributing lug welding positions. The negative pole piece and lug structure comprises negative lugs and a negative pole piece. The negative pole piece comprises a copper foil and negative powder layers coated on the upper and lower surfaces of the copper foil. The negative pole piece and lug structure is characterized in that the copper foil comprises negative lug welding areas, a negative powder coating area and a blank area uncoated with negative powder; the negative lug welding areas are positioned at both left and right ends of the copper foil; the negative lugs are welded in the negative lug welding areas; and the blank area is positioned between a left lug welding area and the negative powder coating area on the upper surface of the copper foil.
Description
Technical field
The utility model belongs to the manufacturing process of electrokinetic cell, relates in particular to a kind of power battery cathode sheet extreme ear structure.
Background technology
Along with the development of lithium ion battery industry, the maturation of electric vehicle engineering and perfect day by day, the application of power lithium-ion battery also more and more widely, the thing followed is the concerns of people to the lithium ion battery power-performance.
For existing pole piece of power battery lug; Generally all adopt the single lug of a plurality of utmost point groups to connect, when high current charge-discharge, battery is caused great damage and influences the high-power efficient that discharges and recharges owing to the collector cross section causes the battery caloric value to increase for a short time.
The utility model content
The technical problem that the utility model will solve provides a kind of battery pole piece collector, reasonable distribute power battery cathode sheet extreme ear structure of lug welding position of increasing.
For addressing the above problem; A kind of power battery cathode sheet extreme ear structure of the utility model; Comprise negative electrode lug and negative plate, the negative pole bisque that said negative plate comprises Copper Foil and is coated on the Copper Foil upper and lower surfaces is characterized in that: comprise negative electrode lug weld zone, negative pole powder coating area and the uncoated clear area that the negative pole powder is arranged on the said Copper Foil; The negative electrode lug weld zone is positioned at the Copper Foil right ends, and negative electrode lug is welded in the negative electrode lug weld zone; Said clear area is between Copper Foil upper surface lug weld zone, left side and utmost point powder coating area.
The length of said clear area is greater than the length of lug weld zone.
The length of said clear area is seven times of lug weld zone length.
Adopt the power battery cathode sheet extreme ear structure of the utility model structure, can effectively reduce the internal resistance of cell, can improve comprehensive electrochemical properties such as electrokinetic cell high rate charge-discharge pond performance, be fit to requirements of large-scale industrial production.
Description of drawings
Fig. 1 is the sketch map of the utility model power battery cathode sheet extreme ear structure.。
Fig. 2 is the vertical view of Fig. 1.
Embodiment
In order to make those skilled in the art person understand the utility model technical scheme better, the utility model is done further to specify below in conjunction with accompanying drawing and execution mode.
Like Fig. 1, shown in 2, a kind of power battery cathode sheet extreme ear structure of the utility model comprises negative electrode lug 1, by Copper Foil 2 and be coated on the negative plate that the negative pole bisque 3 of Copper Foil 2 upper and lower surfaces is formed.
Comprise negative electrode lug weld zone 10, negative pole powder coating area 30 and the uncoated clear area 40 that the negative pole powder is arranged on the said Copper Foil 2.
Negative electrode lug weld zone 10 is positioned at Copper Foil 2 right ends, and negative electrode lug 1 is welded in the negative electrode lug weld zone 10.
Said clear area 40 is between Copper Foil 2 upper surfaces negative electrode lug weld zone 10, left side and negative pole powder coating area 30.
The length of said clear area 40 is seven times of negative electrode lug weld zone 10 length.
Claims (3)
1. power battery cathode sheet extreme ear structure; Comprise negative electrode lug and negative plate; The negative pole bisque that said negative plate comprises Copper Foil and is coated on the Copper Foil upper and lower surfaces; It is characterized in that: comprise negative electrode lug weld zone, negative pole powder coating area and the uncoated clear area that the negative pole powder is arranged on the said Copper Foil, the negative electrode lug weld zone is positioned at the Copper Foil right ends, and negative electrode lug is welded in the negative electrode lug weld zone; Said clear area is between Copper Foil upper surface lug weld zone, left side and utmost point powder coating area.
2. power battery cathode sheet extreme ear structure according to claim 1, it is characterized in that: the length of said clear area is greater than the length of lug weld zone.
3. like the said power battery cathode sheet of claim 2 extreme ear structure, it is characterized in that: the length of said clear area is seven times of lug weld zone length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203725029U CN202308135U (en) | 2011-09-27 | 2011-09-27 | Negative pole piece and lug structure for power battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203725029U CN202308135U (en) | 2011-09-27 | 2011-09-27 | Negative pole piece and lug structure for power battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202308135U true CN202308135U (en) | 2012-07-04 |
Family
ID=46376967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203725029U Expired - Lifetime CN202308135U (en) | 2011-09-27 | 2011-09-27 | Negative pole piece and lug structure for power battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202308135U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104659340A (en) * | 2015-02-16 | 2015-05-27 | 徐象华 | Production process of nickel-based high-energy battery pole plate |
| CN108183264A (en) * | 2017-12-22 | 2018-06-19 | 力神电池（苏州）有限公司 | A kind of preparation method of cylindrical lithium ion battery pole group and its battery pole group |
-
2011
- 2011-09-27 CN CN2011203725029U patent/CN202308135U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104659340A (en) * | 2015-02-16 | 2015-05-27 | 徐象华 | Production process of nickel-based high-energy battery pole plate |
| CN108183264A (en) * | 2017-12-22 | 2018-06-19 | 力神电池（苏州）有限公司 | A kind of preparation method of cylindrical lithium ion battery pole group and its battery pole group |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120704 |