CN202601797U - Quasi-bipolar battery with multiple wound cores and tabs - Google Patents
Quasi-bipolar battery with multiple wound cores and tabs Download PDFInfo
- Publication number
- CN202601797U CN202601797U CN2012202477416U CN201220247741U CN202601797U CN 202601797 U CN202601797 U CN 202601797U CN 2012202477416 U CN2012202477416 U CN 2012202477416U CN 201220247741 U CN201220247741 U CN 201220247741U CN 202601797 U CN202601797 U CN 202601797U
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- volume core
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- core
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- battery
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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 quasi-bipolar battery with multiple wound cores and tabs. The quasi-bipolar battery comprises a shell and a wound core set mounted in the shell. The wound core set comprises a first wound core and at least one second wound core, the first wound core is connected with the second wound cores in parallel, a cathode plate, a diaphragm and an anode plate are stacked and wound to form the first wound core, an anode tab is welded on the anode plate of the first wound core, a plastic block is arranged at the upper end of the anode tab, a cathode tab is welded on the cathode plate of the first wound core, and a plastic block is arranged at the upper end of the cathode tab; a cathode plate, a diaphragm and an anode plate are stacked and wound to form each second wound core, an anode connecting strip is welded on the anode plate of each second wound core, and a cathode connecting strip is welded on the cathode plate of each second wound core; and all the anode connecting strips are connected with the anode tab, and all the cathode connecting strips are connected with the cathode tab. The quasi-bipolar battery has the advantages that the internal resistance of the battery is reduced, the safety performance and the cycle performance of the battery are improved, the tabs are low in material wastage, and cost of the battery can be effectively reduced.
Description
[technical field]
The utility model relates to lithium ion battery, more particularly relates to a kind of architecture advances of high power capacity high-power lithium ion battery.
[background technology]
In the manufacture process of polymer Li-ion battery; All there are certain limitation in traditional pure winding process or pure lamination technology; The lithium battery of high power capacity requires pole piece length very long; Long in process of production pole piece is not easy coiling, occurs the positive and negative plate dislocation in the coiling easily and causes battery short circuit; Compare with winding process, the cycle performance of battery of lamination is not fine, and the production efficiency of lamination is lower.In the present lithium electricity manufacturing process, adopt lamination to add comprehensively the two advantage of winding process, disclose a kind of among the CN1787271A through adopting the volume core parallel connection that a plurality of height and width is all identical; With the security performance of raising battery and the technology of cycle performance; But in process implementing, CN 1787271A adopts all volume core anode ears are welded together again and is drawn by an aluminium nickel strap, the negative electrode lug of all volume cores is welded together again drawn by an aluminium nickel strap; Technological operation is comparatively complicated; Be unfavorable for the lifting of production efficiency, and because the material of positive and negative lug is different with the aluminium nickel strap, the internal resistance that also can increase battery; The existence of these drawbacks has limited the further lifting of battery performance greatly.
[utility model content]
The purpose of the utility model solves the problems of the prior art exactly, proposes the accurate bipolar ear battery of a kind of multireel core, not only can improve the security performance and the cycle performance of battery, and can simplified structure, reduces the production difficulty, enhances productivity.
For realizing above-mentioned purpose; The utility model provides the accurate bipolar ear battery of a kind of multireel core, comprise shell and the volume core group of installing in the enclosure, said volume core group comprises a first volume core and at least one second volume core; The said first volume core and the second volume core are connected in parallel; First volume core is stacked to reel by negative plate, barrier film, positive plate and forms, and is welded with positive pole ear on the positive plate of first volume core, and the upper end of positive pole ear is provided with blob of viscose; Be welded with negative lug on the negative plate of first volume core, the upper end of negative lug is provided with blob of viscose; The second volume core is stacked to reel by negative plate, barrier film, positive plate and forms, and is welded with anodal intercell connector on the positive plate of the second volume core, is welded with the negative pole intercell connector on the negative plate of the second volume core; All anodal intercell connectors are connected with positive pole ear, and all negative pole intercell connectors are connected with negative lug.
As preferably, the said second volume core equates with the width of first volume core, and is highly unequal.
As preferably, being connected between said anodal intercell connector and the positive pole ear is welded to connect, and being connected between negative pole intercell connector and the negative lug is welded to connect.
The beneficial effect of the utility model: each electric in-core of the utility model adopts two kinds of volume cores to be formed in parallel, and after a plurality of electric core parallel connections, the anodal intercell connector of drawing on the second volume core is welded on the positive pole ear of drawing on the first volume core; The negative pole intercell connector of drawing on the second volume core is welded on the negative lug of drawing on the first volume core, and this structure can make intercell connector adopt identical material with lug, thereby has reduced the internal resistance of battery greatly; The security performance and the cycle performance of battery have been improved; And the implementation procedure of this structure is easy, and production efficiency is high; The intercell connector consumptive material is few, can effectively reduce the battery cost.
Characteristic of the utility model and advantage will combine accompanying drawing to be elaborated through embodiment.
[description of drawings]
Fig. 1 is the volume core group structural representation of the accurate bipolar ear battery of a kind of multireel core of the utility model;
Fig. 2-the 1st, the structural representation of first volume core in the volume core group of the accurate bipolar ear battery of a kind of multireel core of the utility model;
Fig. 2-the 2nd, the structural representation of the second volume core in the volume core group of the accurate bipolar ear battery of a kind of multireel core of the utility model;
Fig. 3-the 1st, the structural representation of anode ear in the volume core group of the accurate bipolar ear battery of a kind of multireel core of the utility model;
Fig. 3-the 2nd, the structural representation of negative electrode lug in the volume core group of the accurate bipolar ear battery of a kind of multireel core of the utility model;
Fig. 4-the 1st, the structural representation of anodal intercell connector in the volume core group of the accurate bipolar ear battery of a kind of multireel core of the utility model;
Fig. 4-the 2nd, the structural representation of negative pole intercell connector in the volume core group of the accurate bipolar ear battery of a kind of multireel core of the utility model.
[embodiment]
Consult Fig. 1,2-1,2-2,3-1,3-2,4-1,4-2; The accurate bipolar ear battery of multireel core comprises shell and the volume core group of installing in the enclosure, and said volume core group comprises a first volume core 6 and at least one second volume core 10; The said first volume core 6 and the second volume core 10 are connected in parallel; First volume core 6 is stacked to reel by negative plate 7, barrier film 8, positive plate 9 and forms, and is welded with positive pole ear 1 on the positive plate 9 of first volume core 6, and the upper end of positive pole ear 1 is provided with blob of viscose 3; Be welded with negative lug 2 on the negative plate 7 of first volume core 6, the upper end of negative lug 2 is provided with blob of viscose 3; The second volume core 10 is stacked to reel by negative plate 7, barrier film 8, positive plate 9 and forms, and is welded with on the positive plate 9 of the second volume core 10 on the negative plate 7 of anodal intercell connector 4, the second volume cores 10 and is welded with negative pole intercell connector 5; All anodal intercell connectors 4 are connected with positive pole ear 1, and all negative pole intercell connectors 5 are connected with negative lug 2.The said second volume core 10 equates with the width of first volume core 6, and is highly unequal.Being connected between said anodal intercell connector 4 and the positive pole ear 1 is welded to connect, and being connected between negative pole intercell connector 5 and the negative lug 2 is welded to connect.
Make the process of this polymer Li-ion battery, may further comprise the steps:
A, confirm the sum of inside battery volume core, thereby confirm the sheet number of the second volume core 10 according to the needs of battery capacity;
B, on positive plate 9, negative plate 7, weld positive pole ear 1 and negative lug 2 respectively, be wound into first volume core 6 after successively negative plate 7, barrier film 8 and positive plate 9 being stacked;
C, on positive plate 9, negative plate 7, weld aluminum strip (anodal intercell connector 4) and nickel bar (negative pole intercell connector 5) respectively, will bear successively and be wound into the second volume core 10 after negative plate 7, barrier film 8 and positive plate 9 stack;
D, according to the needs of battery capacity with a first volume core 6 and several second volume core, 10 parallel connections, with aluminum strip (anodal intercell connector 4) and positive pole ear 1 welding; Nickel bar (negative pole intercell connector 5) and negative lug 2 welding; Process volume core group;
E, the volume core group that will process are put into battery case, and encapsulation obtains finished product.
Wherein, The manufacture method of first volume core 6 is: welding positive pole ear 1 on positive plate 9; Welding negative lug 2 on negative plate 7, blob of viscose 3 adopts the CPP blob of viscose, and CPP is the polypropylene of producing through the curtain coating extrusion process in the plastic cement industry (PP); The CPP blob of viscose is positioned at the lug upper end, is wound into first volume core 6 after successively negative plate 7, barrier film 8 and positive plate 9 being stacked.
The manufacture method of the second volume core 10 is: the anodal intercell connector 4 of welding on positive plate 9, welding negative pole intercell connector 5 on negative plate 7 is wound into the second volume core 10 after successively negative plate 7, barrier film 8 and positive plate 9 being stacked.
Except that CPP blob of viscose 3 positions, the material of positive pole ear 1 is identical with the material of anodal intercell connector 4, is aluminum strip; Except that CPP blob of viscose 3 positions, the material of negative lug 2 is identical with the material of negative pole intercell connector 5, is the nickel bar.
Confirm the sum of inside battery volume core according to the needs of battery capacity, thereby confirm the sheet number of the second volume core 10; According to the needs of battery capacity with a first volume core 6 and several second volume core, 10 parallel connections, with aluminum strip (anodal intercell connector 4) and anode ear 1 welding; Nickel bar (negative pole intercell connector 5) and negative electrode lug 2 welding; Process volume core group; The volume core group of processing is put into battery case, encapsulation.
The foregoing description is the explanation to the utility model, is not the qualification to the utility model, any protection range that scheme after the utility model simple transformation is all belonged to the utility model.
Claims (3)
1. the accurate bipolar ear battery of a multireel core; Comprise shell and the volume core group of installing in the enclosure; It is characterized in that: said volume core group comprises a first volume core (6) and at least one second volume core (10), and said first volume core (6) is connected in parallel with the second volume core (10), and first volume core (6) is stacked to reel by negative plate (7), barrier film (8), positive plate (9) and forms; Be welded with positive pole ear (1) on the positive plate (9) of first volume core (6); The upper end of positive pole ear (1) is provided with blob of viscose (3), is welded with negative lug (2) on the negative plate (7) of first volume core (6), and the upper end of negative lug (2) is provided with blob of viscose (3); The second volume core (10) is stacked to reel by negative plate (7), barrier film (8), positive plate (9) and forms; Be welded with anodal intercell connector (4) on the positive plate (9) of the second volume core (10), be welded with negative pole intercell connector (5) on the negative plate (7) of the second volume core (10); All anodal intercell connectors (4) are connected with positive pole ear (1), and all negative pole intercell connectors (5) are connected with negative lug (2).
2. the accurate bipolar ear battery of a kind of multireel core as claimed in claim 1 is characterized in that: the said second volume core (10) equates with the width of first volume core (6), and is highly unequal.
3. according to claim 1 or claim 2 the accurate bipolar ear battery of a kind of multireel core; It is characterized in that: being connected between said anodal intercell connector (4) and the positive pole ear (1) is welded to connect, and being connected between negative pole intercell connector (5) and the negative lug (2) is welded to connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202477416U CN202601797U (en) | 2012-05-25 | 2012-05-25 | Quasi-bipolar battery with multiple wound cores and tabs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202477416U CN202601797U (en) | 2012-05-25 | 2012-05-25 | Quasi-bipolar battery with multiple wound cores and tabs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202601797U true CN202601797U (en) | 2012-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012202477416U Expired - Fee Related CN202601797U (en) | 2012-05-25 | 2012-05-25 | Quasi-bipolar battery with multiple wound cores and tabs |
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| Country | Link |
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| CN (1) | CN202601797U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103035954A (en) * | 2012-12-28 | 2013-04-10 | 常州华科新能源科技有限公司 | Winding lithium ion battery and fabrication method thereof |
| CN106450497A (en) * | 2016-12-08 | 2017-02-22 | 东莞市迈科新能源有限公司 | Multi-roll-core double-lug soft-package battery and production method thereof |
-
2012
- 2012-05-25 CN CN2012202477416U patent/CN202601797U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103035954A (en) * | 2012-12-28 | 2013-04-10 | 常州华科新能源科技有限公司 | Winding lithium ion battery and fabrication method thereof |
| CN103035954B (en) * | 2012-12-28 | 2016-04-06 | 常州华科新能源科技有限公司 | A kind of coiled lithium ion battery and preparation method thereof |
| CN106450497A (en) * | 2016-12-08 | 2017-02-22 | 东莞市迈科新能源有限公司 | Multi-roll-core double-lug soft-package battery and production method thereof |
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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: 20121212 Termination date: 20150525 |
|
| EXPY | Termination of patent right or utility model |