CN201956411U - Lug connection structure of laminated square lithium ion battery - Google Patents
Lug connection structure of laminated square lithium ion battery Download PDFInfo
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- CN201956411U CN201956411U CN2011200709645U CN201120070964U CN201956411U CN 201956411 U CN201956411 U CN 201956411U CN 2011200709645 U CN2011200709645 U CN 2011200709645U CN 201120070964 U CN201120070964 U CN 201120070964U CN 201956411 U CN201956411 U CN 201956411U
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- same parents
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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 relates to a lug connection structure of a laminated square lithium ion battery. The lug connection structure comprises battery core cells formed by laminating n positive plates and n+1 negative plates, wherein the positive plates and the negative plates are partitioned by diaphragms. The lug connection structure is characterized in that: a positive lug region and a negative lug region are respectively preserved at one sides of the positive plates and the negative plates; positive lugs and negative lugs respectively and symmetrically extend out of two sides of the core cells when the core cells are formed through lamination; a battery core integer is formed by symmetrically connecting two core cells in parallel; negative poles of the two core cells are connected together through a negative connecting sheet; and positive poles of the two core cells are connected together through a positive connecting sheet. In the utility model, the two core cells are symmetrically connected in parallel to form the battery core integer, and the capacity of the battery can be doubled; through the stable connection of the positive connecting sheet and the negative connecting sheet, the positive lugs and the negative lugs are processed to have same direction inside the battery so that the operation is simpler, and an external connecting line can be shortened when the battery is assembled, the stability is enhanced, the welding thickness of each lug is 1/2 of the thickness of the whole battery, and the welding difficulty of multiple lugs is greatly reduced.
Description
Technical field
The utility model relates to the lug syndeton of the high-power stacked square lithium ion battery of a kind of big capacity.
Background technology
At present the lug of the stacked square lithium-ion power battery of uses such as electric tool, electric bicycle, battery-operated motor cycle, vehicle using motor and automobile prolongs mode and have two kinds: the one, and positive and negative lug homonymy prolongs, the method is adopted by most of manufacturer, because of positive and negative lug then only need be provided with a covering plate structure for the battery that covering system is arranged in the same way, and the used connecting line of outside batteries is short when assembling in the later stage, help reliable and stable, the disadvantage of the method is between positive and negative lug suitable gap to be arranged, the lug width setup is restricted, and is unfavorable for high power discharge.The 2nd, positive and negative lug prolongs respectively in both sides up and down, and the setting of the favourable lug width of the method helps high power discharge, the disadvantage of the method is that positive and negative lug is in electric core both sides, the used connection line length of outside batteries when assembling in the later stage, the connected mode complexity is unfavorable for reliable and stable.Above dual mode also has common shortcoming: battery capacity requires high, electric core thickening, and laminated pole piece is many, and lug is many, and the lug welding is difficult, even can't firmly weld together; When adopting hard shell body such as box hat or aluminum hull if battery does not adopt Soft Roll, lug is many is unfavorable for more that lug is whole and welds together with the cover plate system.
The utility model content
The utility model purpose is to overcome the shortcoming of prior art, and a kind of lug syndeton of stacked square lithium ion battery is provided.Battery capacity doubled realizing, to reduce the lug throat thickness, reduce the welding difficulty of multipole ear greatly.
The utility model comprises by n sheet positive plate and n+1 sheet negative plate lamination forms the battery born of the same parents, separate with barrier film between the positive/negative plate, it is characterized in that, side at positive and negative plate is reserved with the positive and negative electrode ear field respectively, positive and negative lug stretches out from core born of the same parents bilateral symmetry respectively when building up the core born of the same parents, electricity core integral body is composed in parallel by two core born of the same parents symmetries, and two core born of the same parents' negative pole links together by the negative pole brace, and two core born of the same parents' positive pole links together by positive strap.
Be welded with Extendible flake on the described both positive and negative polarity brace,,, constitute the Soft Roll mode as an electric core integral body with two core born of the same parents symmetrical folds.
Described both positive and negative polarity brace is welded on the cover plate system, then with two core born of the same parents symmetrical folds, as an electric core integral body, constitutes duricrust plate mode with cover.
The utility model composes in parallel an electric core integral body with two core born of the same parents symmetries, battery capacity can be doubled; Two core born of the same parents' negative pole links together by the negative pole brace, and two core born of the same parents' positive pole links together by positive strap; By the stable connection of both positive and negative polarity brace, at inside battery positive and negative lug is processed into equidirectionally, make operation simpler, external connection line in the time of can shortening simultaneously the battery assembling, enhanced stability, and the lug throat thickness is entire cell half, greatly reduces the welding difficulty of multipole ear.In each welding stage, welding manner can adopt variety of way and Combination Welding modes thereof such as super weldering, electric resistance welding or Laser Welding, can once weld, but also multiple welding.Can be widely used in electric tool, electric bicycle, battery-operated motor cycle, vehicle using motor and automobile etc.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment 1;
Fig. 2 is the structural representation of the utility model embodiment 2;
Fig. 3 is the front schematic view of Fig. 1 after folding;
Fig. 4 is the side schematic view of Fig. 3.
Embodiment
The utility model is described in further detail below in conjunction with embodiment.
With reference to accompanying drawing:
The present embodiment battery is a duricrust plate mode with cover, form battery born of the same parents 3 by n sheet positive plate 2 and n+1 sheet negative plate 1 lamination, side at positive and negative plate is reserved with the positive and negative electrode ear field respectively, among the same core born of the same parents, the negative lug district of all negative plates whole formation negative pole 1, the whole formation positive pole 2 in the positive pole ear district of all positive plates,, positive pole 2 and negative pole 1 stretch out from core born of the same parents bilateral symmetry respectively when building up the core born of the same parents; Electricity core integral body is composed in parallel by two core born of the same parents 3 symmetries, two core born of the same parents' 3 negative pole 1 links together by conducting electricity good negative pole brace 4, two core born of the same parents' positive pole 2 links together by conducting electricity good positive strap 5, negative pole brace 4 and positive strap 5 are connected on the cover plate system 6, and each connects by super weldering or electric resistance welding or Laser Welding or Combination Welding mode welds at welding region 7.
Embodiment 2:
Present embodiment is as different from Example 1: battery is the Soft Roll mode, does not have the cover plate system, extends negative pole Extendible flake 8 from negative pole brace 4, extends anodal Extendible flake 9 from positive strap 5.With two core born of the same parents symmetrical folds,, constitute the Soft Roll mode as an electric core integral body.
Claims (3)
1. the lug syndeton of a stacked square lithium ion battery, comprise by n sheet positive plate and n+1 sheet negative plate lamination and form the battery born of the same parents, separate with barrier film between the positive/negative plate, it is characterized in that, side at positive and negative plate is reserved with the positive and negative electrode ear field respectively, positive and negative lug stretches out from core born of the same parents bilateral symmetry respectively when building up the core born of the same parents, electricity core integral body is composed in parallel by two core born of the same parents symmetries, two core born of the same parents' negative pole links together by the negative pole brace, and two core born of the same parents' positive pole links together by positive strap.
2. the lug syndeton of stacked square lithium ion battery according to claim 1 is characterized in that, is welded with Extendible flake on the described both positive and negative polarity brace, with two core born of the same parents symmetrical folds, as an electric core integral body, constitutes the Soft Roll mode.
3. the lug syndeton of stacked square lithium ion battery according to claim 1 is characterized in that, described both positive and negative polarity brace is welded on the cover plate system, then with two core born of the same parents symmetrical folds, as an electric core integral body, constitutes duricrust plate mode with cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200709645U CN201956411U (en) | 2011-03-17 | 2011-03-17 | Lug connection structure of laminated square lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200709645U CN201956411U (en) | 2011-03-17 | 2011-03-17 | Lug connection structure of laminated square lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201956411U true CN201956411U (en) | 2011-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200709645U Expired - Fee Related CN201956411U (en) | 2011-03-17 | 2011-03-17 | Lug connection structure of laminated square lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201956411U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103178292A (en) * | 2013-02-05 | 2013-06-26 | 中聚电池研究院有限公司 | Lithium ion battery and assembly method thereof |
| CN110400959A (en) * | 2019-08-26 | 2019-11-01 | 桑德新能源技术开发有限公司 | A kind of winding double-core packet, winding double-core pack the method for making and lithium ion battery |
-
2011
- 2011-03-17 CN CN2011200709645U patent/CN201956411U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103178292A (en) * | 2013-02-05 | 2013-06-26 | 中聚电池研究院有限公司 | Lithium ion battery and assembly method thereof |
| CN103178292B (en) * | 2013-02-05 | 2015-05-20 | 中聚电池研究院有限公司 | Lithium ion battery and assembly method thereof |
| CN110400959A (en) * | 2019-08-26 | 2019-11-01 | 桑德新能源技术开发有限公司 | A kind of winding double-core packet, winding double-core pack the method for making and lithium ion 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: 20110831 Termination date: 20190317 |