CN203787523U - Novel winding structure for high-rate power lithium ion battery electrode piece - Google Patents
Novel winding structure for high-rate power lithium ion battery electrode piece Download PDFInfo
- Publication number
- CN203787523U CN203787523U CN201420187170.0U CN201420187170U CN203787523U CN 203787523 U CN203787523 U CN 203787523U CN 201420187170 U CN201420187170 U CN 201420187170U CN 203787523 U CN203787523 U CN 203787523U
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- white area
- negative plate
- stays
- head
- welded
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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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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The utility model relates to a novel winding structure for a high-rate power lithium ion battery electrode piece, and relates to the technical field of a lithium battery. A first aluminum tab is welded in a head blank area of a positive electrode piece, a second aluminum tab is welded in an intermediate blank area of the positive electrode piece, a first copper-nickel composite tab is welded in a head blank area on the back surface of a negative electrode piece, a second copper-nickel composite tab is welded in a tail blank area on the back surface of the negative electrode piece, the first aluminum tab is arranged on one side of an inner ring of a core, the first copper-nickel composite tab is arranged on the other side of the inner ring of the core, the first aluminum tab is welded in the head blank area of the positive electrode piece, the second aluminum tab is welded in the intermediate blank area of the positive electrode piece, so that the internal resistance of the battery can be reduced, the rate capability and the cycling performance of a cell can be improved, and the problem that heat in the heating areas of the positive tab and the negative tab is difficult to radiate can be avoided.
Description
Technical field
The utility model relates to technical field of lithium batteries, is specifically related to a kind of novel high-multiplying power lithium ion battery pole piece coiling structure.
Background technology
Tradition rate battery often adopts positive/negative plate to be the structure of monopole ear or anodal monopole ear negative pole Double-pole lug, this structure battery is when large multiplying power discharging, lug heating is serious, cell integrated excess Temperature, make the easy thermal runaway of battery, thereby cause battery multiplying power discharging property and cycle performance variation.
Normal two copper or the two nickel lug of adopting of tradition rate battery cathode sheet, when some back welding, due to the contact resistance of copper and copper, be significantly less than the contact resistance of copper and box hat nickel dam, easy like this while causing welding energy distribution inhomogeneous and cause copper and box hat nickel dam to cross weldering, the phenomenon of copper and copper layer rosin joint occurs, and negative pole adopts two nickel lugs can not play again the effect that reduces internal resistance.
Summary of the invention
The purpose of this utility model is to provide a kind of novel high-multiplying power lithium ion battery pole piece coiling structure, it from structural design reduced battery internal resistance, improve battery core multiplying power and cycle performance, solve the inhomogeneous or higher problem of internal resistance of employing copper polar ear or nickel tab welding energy, avoided positive and negative lug hot zone heat radiation difficult problem simultaneously.
In order to solve the existing problem of background technology, the utility model is by the following technical solutions: it comprises positive plate, negative plate, it also comprises the first aluminium pole ears, the second aluminium pole ears, positive plate head and stays white area, the compound lug of the first bronze medal nickel, the compound lug of the second bronze medal nickel, negative plate front head to stay white area, negative plate front run-out to stay white area, negative plate back side head to stay white area, negative plate back side afterbody to stay white area and volume core in the middle of staying white area, positive plate, one end of positive plate and centre are respectively equipped with positive plate head and stay white area, in the middle of positive plate, stay white area, the first aluminium pole ears is welded on positive plate head and stays on white area, the second aluminium pole ears stays on white area in the middle of being welded on positive plate, the two ends of negative plate are respectively equipped with negative plate front head and stay white area, negative plate front run-out stays white area, negative plate front head stays white area, negative plate front run-out stays the outside in white area to be respectively equipped with negative plate back side head and stays white area, negative plate back side afterbody stays white area, the compound tab welding of the first bronze medal nickel stays on white area at negative plate back side head, the compound tab welding of the second bronze medal nickel stays on white area at negative plate back side afterbody, the first aluminium pole ears is arranged on a side of volume in-core circle, the compound lug of the first bronze medal nickel is arranged on the opposite side of volume in-core circle.
The utility model adopts the compound lug of copper nickel, has solved the inhomogeneous or higher problem of internal resistance of employing copper polar ear or nickel tab welding energy, and copper nickel negative electrode lug has good electric conductivity, and its conductivity approaches the conductivity of fine copper; Coiling first enters to roll up negative plate two circles and reenters volume positive plate, be conducive to the heat radiation of negative electrode lug, to a certain degree also reduced the use length of barrier film simultaneously, saved the cost that barrier film is used, after coiling completes, negative plate length direction head lug is in volume in-core circle one side, positive plate length direction head lug is at volume in-core circle opposite side, avoided battery core when work during especially large multiplying power work the positive and negative lug heating region of inner ring concentrate and the difficult situation of dispelling the heat, improved the security performance of battery core.
The utlity model has following beneficial effect: it from structural design reduced battery internal resistance, improve battery core multiplying power and cycle performance, solve the inhomogeneous or higher problem of internal resistance of employing copper polar ear or nickel tab welding energy, avoided positive and negative lug hot zone heat radiation difficult problem simultaneously.
Accompanying drawing explanation:
Fig. 1 is the utility model structural representation;
Fig. 2 is the structural representation of positive plate in the utility model;
Fig. 3 is the structural representation of negative plate in the utility model.
Embodiment:
Referring to Fig. 1 to Fig. 3, this embodiment by the following technical solutions: it comprises positive plate 1, negative plate 2, it also comprises the first aluminium pole ears 11, the second aluminium pole ears 12, positive plate head and stays white area 14, the compound lug 21 of the first bronze medal nickel, the compound lug 22 of the second bronze medal nickel, negative plate front head to stay white area 23, negative plate front run-out to stay white area 24, negative plate back side head to stay white area 25, negative plate back side afterbody to stay white area 26 and volume core 3 in the middle of staying white area 13, positive plate, one end of positive plate 1 and centre are respectively equipped with positive plate head and stay white area 13, in the middle of positive plate, stay white area 14, the first aluminium pole ears 11 is welded on positive plate head and stays on white area 13, the second aluminium pole ears 12 stays on white area 14 in the middle of being welded on positive plate, the two ends of negative plate 2 are respectively equipped with negative plate front head and stay white area 23, negative plate front run-out stays white area 24, negative plate front head stays white area 23, negative plate front run-out stays the outside in white area 24 to be respectively equipped with negative plate back side head and stays white area 25, negative plate back side afterbody stays white area 26, the compound lug 21 of the first bronze medal nickel is welded on negative plate back side head and stays on white area 25, the compound lug 22 of the second bronze medal nickel is welded on negative plate back side afterbody and stays on white area 26, the first aluminium pole ears 11 is arranged on a side of volume core 3 inner rings, the compound lug 21 of the first bronze medal nickel is arranged on the opposite side of volume core 3 inner rings.
This embodiment adopts the compound lug of copper nickel, has solved the inhomogeneous or higher problem of internal resistance of employing copper polar ear or nickel tab welding energy, and copper nickel negative electrode lug has good electric conductivity, and its conductivity approaches the conductivity of fine copper; Coiling first enters to roll up negative plate two circles and reenters volume positive plate, be conducive to the heat radiation of negative electrode lug, to a certain degree also reduced the use length of barrier film simultaneously, saved the cost that barrier film is used, after coiling completes, negative plate length direction head lug is in volume in-core circle one side, positive plate length direction head lug is at volume in-core circle opposite side, avoided battery core when work during especially large multiplying power work the positive and negative lug heating region of inner ring concentrate and the difficult situation of dispelling the heat, improved the security performance of battery core.
This embodiment has following beneficial effect: it from structural design reduced battery internal resistance, improve battery core multiplying power and cycle performance, solve the inhomogeneous or higher problem of internal resistance of employing copper polar ear or nickel tab welding energy, avoided positive and negative lug hot zone heat radiation difficult problem simultaneously.
Claims (1)
1. a novel high-multiplying power lithium ion battery pole piece coiling structure, it comprises positive plate (1), negative plate (2), it is characterized in that it also comprises the first aluminium pole ears (11), the second aluminium pole ears (12), positive plate head and stays white area (14), the compound lug of the first bronze medal nickel (21), the compound lug of the second bronze medal nickel (22), negative plate front head to stay white area (23), negative plate front run-out to stay white area (24), negative plate back side head stay white area (25), negative plate back side afterbody to stay white area (26) and roll up core (3) in the middle of staying white area (13), positive plate, one end of positive plate (1) and centre are respectively equipped with positive plate head and stay white area (13), in the middle of positive plate, stay white area (14), the first aluminium pole ears (11) is welded on positive plate head and stays on white area (13), the second aluminium pole ears (12) stays on white area (14) in the middle of being welded on positive plate, the two ends of negative plate (2) are respectively equipped with negative plate front head and stay white area (23), negative plate front run-out stays white area (24), negative plate front head stays white area (23), negative plate front run-out stays the outside in white area (24) to be respectively equipped with negative plate back side head and stays white area (25), negative plate back side afterbody stays white area (26), the compound lug of the first bronze medal nickel (21) is welded on negative plate back side head and stays on white area (25), the compound lug of the second bronze medal nickel (22) is welded on negative plate back side afterbody and stays on white area (26), the first aluminium pole ears (11) is arranged on a side of volume core (3) inner ring, the compound lug of the first bronze medal nickel (21) is arranged on the opposite side of volume core (3) inner ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420187170.0U CN203787523U (en) | 2014-04-17 | 2014-04-17 | Novel winding structure for high-rate power lithium ion battery electrode piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420187170.0U CN203787523U (en) | 2014-04-17 | 2014-04-17 | Novel winding structure for high-rate power lithium ion battery electrode piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203787523U true CN203787523U (en) | 2014-08-20 |
Family
ID=51323678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420187170.0U Expired - Fee Related CN203787523U (en) | 2014-04-17 | 2014-04-17 | Novel winding structure for high-rate power lithium ion battery electrode piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203787523U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110729445A (en) * | 2018-07-16 | 2020-01-24 | 深圳先进技术研究院 | Tab with coating, preparation method thereof, battery cell, battery and electric tool |
| CN114335662A (en) * | 2021-12-16 | 2022-04-12 | 瑞浦能源有限公司 | Method and structure for welding lithium ion pole piece and battery cell |
-
2014
- 2014-04-17 CN CN201420187170.0U patent/CN203787523U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110729445A (en) * | 2018-07-16 | 2020-01-24 | 深圳先进技术研究院 | Tab with coating, preparation method thereof, battery cell, battery and electric tool |
| CN114335662A (en) * | 2021-12-16 | 2022-04-12 | 瑞浦能源有限公司 | Method and structure for welding lithium ion pole piece and battery cell |
| CN114335662B (en) * | 2021-12-16 | 2024-04-09 | 瑞浦兰钧能源股份有限公司 | Method and structure for welding lithium ion pole piece and 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: 20140820 Termination date: 20180417 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |