CN202339959U - Multi-winding core lithium ion battery - Google Patents
Multi-winding core lithium ion battery Download PDFInfo
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- CN202339959U CN202339959U CN201120526608XU CN201120526608U CN202339959U CN 202339959 U CN202339959 U CN 202339959U CN 201120526608X U CN201120526608X U CN 201120526608XU CN 201120526608 U CN201120526608 U CN 201120526608U CN 202339959 U CN202339959 U CN 202339959U
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- lithium ion
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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
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Abstract
The utility model discloses a multi-winding core lithium ion battery, which comprises at least two winding cores. Each winding core comprises a positive plate, a negative plate and a diaphragm. An aluminum tab is welded on each positive plate, and a nickel tab is welded on each negative plate. A positive current collector and a negative current collector are welded to the tail parts of each positive plate and each negative plate respectively. The positive current collectors of adjacent winding cores are welded in parallel, and the negative current collectors of adjacent winding cores are welded in parallel. Due to the adoption of a multi-winding core design in the battery, winding efficiency and the advantages of lamination are combined, and the battery is packaged like an ordinary single-winding core battery, and is convenient to operate, easy to package and low in internal resistance.
Description
Technical field
The utility model relates to the improvement technology to multireel core lithium ion battery.
Background technology
Existing lithium ion battery generally adopts both positive and negative polarity diaphragm, barrier film to assemble through coiling, lamination technology, goes into shell welding or heat-seal then, adds electrolyte; Conventional winding process battery adopts the monovolume core more, and when requiring the big capacity of monomer, long being difficult to of pole piece reels; The internal resistance of cell is excessive when requiring multiplying power too high; Lamination technology can realize, but production efficiency is very low, and the application of multireel core is arranged for the soft-package battery that adopts heat-seal; But adopt the parallel connection outside mode, encapsulation acquires a certain degree of difficulty and potential safety hazard.
The utility model content
In view of this, the utility model technical problem that will solve provides a kind of internal resistance of cell multireel core lithium ion battery low, easy for installation.
The utility model adopts following scheme to realize:
A kind of multireel core lithium ion battery; Comprise at least two volume cores, each is rolled up core and comprises positive plate, negative plate, barrier film, on positive plate, is welded with aluminium pole ears; On negative plate, be welded with the nickel lug; Be welded with plus plate current-collecting body, negative current collector respectively at positive plate and negative plate afterbody, adjacent volume core plus plate current-collecting body welding parallel connection, adjacent volume core negative current collector welding parallel connection.
As the improvement of such scheme, described plus plate current-collecting body is aluminium foil or aluminium strip, and described negative current collector is Copper Foil or nickel strap, and the anode ear, the negative electrode lug that connect external circuit are installed on the same volume core.
The utility model adopts inner multireel core design, takes into account the efficient of coiling and the performance advantage of lamination, and it is the same with normal monovolume core battery that envelope is changeed, and is convenient to operation, and encapsulation is simple, and the internal resistance of cell is low.
Description of drawings
Fig. 1 has the positive plate structural representation of anode ear and collector for utility model embodiment.
Fig. 2 only has the positive plate structural representation of collector for present embodiment.
Fig. 3 has the battery roll core structural representation of anode ear and collector for present embodiment.
Fig. 4 only has the battery roll core structural representation of collector for present embodiment.
Fig. 5 is two volume core assembled state structural representations among Fig. 3, Fig. 4.
Embodiment
Below will combine accompanying drawing and embodiment that the utility model is described in further detail for the ease of it will be appreciated by those skilled in the art that:
Shown in accompanying drawing 1～5.The multireel core lithium ion battery of present embodiment design comprises two volume cores 1, and one of them volume core comprises positive plate 2, negative plate 3, barrier film 4 and is welded in positive plate 2 respectively and the plus plate current-collecting body 21 of negative plate 3 afterbodys, negative current collector 31.Another volume core also is welded with anode ear 22, negative electrode lug 32 respectively on positive plate 2 and negative plate 3 except that comprising said structure.The plus plate current-collecting body 21 of two volume cores is welded to connect, and plus plate current-collecting body 31 is welded to connect, 32 both positive and negative polarities that connect external circuit as entire cell of anode ear 22 and negative electrode lug.
The plus plate current-collecting body that this programme adopts is aluminium foil or aluminium strip, and negative current collector is Copper Foil or nickel strap.
Negative plate structure in this programme and Fig. 1, Fig. 2 structure are consistent.
Except that the battery that two volume cores of foregoing description are formed, can also comprise 3 or a plurality of volume cores, each structure connected mode of rolling up core is all consistent with above-mentioned two volume core connected modes.
During making; At first will with positive and negative plate, the membrane coil rolling core of other band collectors, utilize ultrasonic bond again with positive and negative plate, the membrane coil rolling core of anode ear, negative electrode lug lug and plus plate current-collecting body, negative current collector with the collector parallel connection welding successively on each volume core; Form volume core string; Adopt OPP glue or high-temp glue to be fixed as the multireel core, adopt the aluminum-plastic composite membrane encapsulation in whole multireel core appearance then, perfusion electrolyte is processed multireel core lithium ion battery.
The design adopts inner multireel core design, takes into account the efficient of coiling and the performance advantage of lamination, and it is the same with normal monovolume core battery that envelope is changeed, and is convenient to operation, and encapsulation is simple, and the internal resistance of cell is low.
More than be the wherein concrete implementation of the utility model, it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these conspicuous replacement forms all belong to the protection range of the utility model.
Claims (2)
1. multireel core lithium ion battery; Comprise at least two volume cores (1); Each is rolled up core and comprises positive plate (2), negative plate (3), barrier film (4); It is characterized in that: be welded with plus plate current-collecting body (21), negative current collector (31) respectively at positive plate and negative plate afterbody, adjacent volume core plus plate current-collecting body welding parallel connection, adjacent volume core negative current collector welding parallel connection.
2. multireel core lithium ion battery according to claim 1; It is characterized in that: described plus plate current-collecting body is aluminium foil or aluminium strip; Described negative current collector is Copper Foil or nickel strap, and the anode ear (22), the negative electrode lug (32) that connect external circuit are installed on the same volume core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120526608XU CN202339959U (en) | 2011-12-16 | 2011-12-16 | Multi-winding core lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120526608XU CN202339959U (en) | 2011-12-16 | 2011-12-16 | Multi-winding core lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202339959U true CN202339959U (en) | 2012-07-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120526608XU Expired - Lifetime CN202339959U (en) | 2011-12-16 | 2011-12-16 | Multi-winding core lithium ion battery |
Country Status (1)
| Country | Link |
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| CN (1) | CN202339959U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102916156A (en) * | 2012-10-30 | 2013-02-06 | 浙江振龙电源股份有限公司 | Multi-winding core quasi-bipolar lug battery and manufacturing method thereof |
| CN103022553A (en) * | 2012-12-27 | 2013-04-03 | 天津力神电池股份有限公司 | Overlapped type lithium ion battery |
-
2011
- 2011-12-16 CN CN201120526608XU patent/CN202339959U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102916156A (en) * | 2012-10-30 | 2013-02-06 | 浙江振龙电源股份有限公司 | Multi-winding core quasi-bipolar lug battery and manufacturing method thereof |
| CN103022553A (en) * | 2012-12-27 | 2013-04-03 | 天津力神电池股份有限公司 | Overlapped type lithium ion battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Aerospace Science and Technology Industrial Park, 51 No. 516008 Guangdong province Huizhou City Zhongkai Road No. 3 Patentee after: Huizhou Hengtai Polytron Technologies Inc Address before: Aerospace Science and Technology Industrial Park, 51 No. 516008 Guangdong province Huizhou City Zhongkai Road No. 3 Patentee before: HUIZHOU HENGTAI TECHNOLOGY CO., LTD. |
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| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120718 |
|
| CX01 | Expiry of patent term |