CN102916156A - Multi-winding core quasi-bipolar lug battery and manufacturing method thereof - Google Patents
Multi-winding core quasi-bipolar lug battery and manufacturing method thereof Download PDFInfo
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- CN102916156A CN102916156A CN2012104260583A CN201210426058A CN102916156A CN 102916156 A CN102916156 A CN 102916156A CN 2012104260583 A CN2012104260583 A CN 2012104260583A CN 201210426058 A CN201210426058 A CN 201210426058A CN 102916156 A CN102916156 A CN 102916156A
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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 invention discloses a multi-winding core quasi-bipolar lug battery and a manufacturing method thereof. The multi-winding core quasi-bipolar lug battery comprises a shell and a winding core group installed inside the shell, wherein the winding core group comprises a first winding core and at least one second winding core; the first winding core and the second winding core are connected in parallel; the first winding core is formed by overlapping and winding a negative electrode plate, a diaphragm and a positive electrode plate; a positive electrode lug is welded on the positive electrode plate of the first winding core; a rubber block is arranged at the upper end of the positive electrode lug; a negative electrode lug is welded on the negative electrode plate of the first winding core; a rubber block is arranged at the upper end of the negative electrode lug; the second winding core is formed by overlapping and winding a negative electrode plate, a diaphragm and a positive electrode plate; aluminum connecting strips are welded on the positive electrode plate of the second winding core; the thickness of the aluminum connecting strip is 0.2mm; nickel connecting strips are welded on the negative electrode plate of the second winding core; the thickness of the nickel connecting strip is 0.2mm; the upper ends of all the aluminum connecting strips are welded on the positive electrode lug; the upper ends of the nickel connecting strips are welded on the negative electrode lug; the rubber block on the positive electrode lug is positioned above the aluminum connecting strips; and the rubber block on the negative electrode lug are positioned above the nickel connecting strip. The internal resistance of the multi-winding core quasi-bipolar lug battery is reduced; the safety performance and the cycle performance of the multi-winding core quasi-bipolar lug battery are improved; and the electrode lugs consume few materials, so that the cost of the multi-winding core quasi-bipolar lug battery can be effectively reduced.
Description
[technical field]
The present invention relates to lithium ion battery, more particularly relate 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 process, the lithium battery of high power capacity requires pole piece length very long, long pole piece is not easy coiling in process of production, easily occurs the positive and negative plate dislocation in the coiling 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 among the CN1787271A that a kind of all identical volume core is in parallel with a plurality of height and width by adopting, with the security performance of raising battery and the technique of cycle performance, but in process implementing, the CN1787271A employing welds together all volume core anode ears is again drawn by an aluminium nickel strap, the negative pole lug welding of all volume cores is drawn by an aluminium nickel strap together again, technological operation is comparatively complicated, be unfavorable for the lifting of production efficiency, and because the material of positive and negative lug is different from the aluminium nickel strap, also can increase the internal resistance of battery, the existence of these drawbacks has limited the further lifting of battery performance greatly.
[summary of the invention]
Purpose of the present invention solves the problems of the prior art exactly, proposes the accurate Double-pole lug Battery And Its Manufacturing Methods of a kind of multi-winding-core, not only can improve security performance and the cycle performance of battery, and can simplified structure, reduces production difficulty, enhances productivity.
For achieving the above object, the present invention proposes the accurate Double-pole lug battery of a kind of multi-winding-core, comprise shell and installation volume core group in the enclosure, described volume core group comprises a first volume core and at least one volume Two core, described first volume core and volume Two core are connected in parallel, first volume core is stacked to reel by negative plate, barrier film, positive plate and forms, be welded with positive pole ear on the positive plate of first volume core, 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 volume Two core is stacked to reel by negative plate, barrier film, positive plate and forms, and is welded with the aluminium intercell connector on the positive plate of volume Two core, and the thickness of aluminium intercell connector is 0.2mm, is welded with the nickel intercell connector on the negative plate of volume Two core, and the thickness of nickel intercell connector is 0.2mm; The upper end of all aluminium intercell connectors is welded on the positive pole ear, and the upper end of nickel intercell connector is welded on the negative lug, and the blob of viscose on the positive pole ear is positioned at the top of aluminium intercell connector, and the blob of viscose on the negative lug is positioned at the top of nickel intercell connector.
As preferably, described volume Two core equates with the width of first volume core, and is highly unequal.
For achieving the above object, the invention allows for the manufacture method of the accurate Double-pole lug battery of a kind of multi-winding-core, may further comprise the steps successively:
A, determine the sum of inside battery volume core according to the needs of battery capacity, thereby determine the sheet number of volume Two core;
B, weld positive pole ear and negative lug at positive plate, negative plate respectively, be wound into first volume core after successively negative plate, barrier film and positive plate being stacked;
C, respectively welding of aluminum intercell connector and nickel intercell connector on positive plate, negative plate will be born successively and be wound into the volume Two core after negative plate, barrier film and positive plate stack;
D a, first volume core and several volume Two cores is in parallel according to the needs of battery capacity is with upper end and the positive pole ear welding of aluminium intercell connector; The upper end of nickel intercell connector and negative lug welding; Make volume core group;
E, the volume core group that will make are put into battery case, and encapsulation obtains the accurate Double-pole lug battery of multi-winding-core finished product.
As preferably, weld positive pole ear at positive plate in the described b step, weld negative lug at negative plate, be stained with blob of viscose at positive pole ear and negative lug respectively, blob of viscose adopts the CPP blob of viscose.
Beneficial effect of the present invention: adopt two kinds of volume cores to be formed in parallel in each battery core of the present invention, after a plurality of battery core parallel connections, the aluminium intercell connector of drawing on the volume Two core is welded on the positive pole ear of drawing on the first volume core, the nickel intercell connector of drawing on the volume Two core is welded on the negative lug of drawing on the first volume core, this structure can make intercell connector adopt identical material with lug, thereby reduced greatly the internal resistance of battery, security performance and the cycle performance of battery have been improved, and, the implementation procedure of this structure is easy, production efficiency is high, and the intercell connector consumptive material is few, can effectively reduce the battery cost.
Feature of the present invention and advantage will be elaborated by reference to the accompanying drawings by embodiment.
[description of drawings]
Fig. 1 is the volume core group structural representation of the accurate Double-pole lug battery of a kind of multi-winding-core of the present invention;
Fig. 2-the 1st, the structural representation of first volume core in the volume core group of the accurate Double-pole lug battery of a kind of multi-winding-core of the present invention;
Fig. 2-the 2nd, the structural representation of volume Two core in the volume core group of the accurate Double-pole lug battery of a kind of multi-winding-core of the present invention;
Fig. 3-the 1st, the structural representation of anode ear in the volume core group of the accurate Double-pole lug battery of a kind of multi-winding-core of the present invention;
Fig. 3-the 2nd, the structural representation of negative electrode lug in the volume core group of the accurate Double-pole lug battery of a kind of multi-winding-core of the present invention;
Fig. 4-the 1st, the structural representation of aluminium intercell connector in the volume core group of the accurate Double-pole lug battery of a kind of multi-winding-core of the present invention;
Fig. 4-the 2nd, the structural representation of nickel intercell connector in the volume core group of the accurate Double-pole lug battery of a kind of multi-winding-core of the present invention.
[embodiment]
Consult Fig. 1,2-1,2-2,3-1,3-2,4-1,4-2, the accurate Double-pole lug battery of multi-winding-core, comprise shell and installation volume core group in the enclosure, described volume core group comprises a first volume core 6 and at least one volume Two core 10, described first volume core 6 is connected in parallel with volume Two core 10, 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, 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; Volume Two core 10 is stacked to reel by negative plate 7, barrier film 8, positive plate 9 and forms, and is welded with aluminium intercell connector 4 on the positive plate 9 of volume Two core 10, is welded with nickel intercell connector 5 on the negative plate 7 of volume Two core 10; All aluminium intercell connectors 4 are connected with positive pole ear 1, and all nickel intercell connectors 5 are connected with negative lug 2.Described volume Two core 10 equates with the width of first volume core 6, and is highly unequal.Being connected between described aluminium intercell connector 4 and the positive pole ear 1 is welded to connect, and being connected between nickel 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, determine the sum of inside battery volume core according to the needs of battery capacity, thereby determine the sheet number of volume Two core 10;
B, weld positive pole ear 1 and negative lug 2 at positive plate 9, negative plate 7 respectively, be wound into first volume core 6 after successively negative plate 7, barrier film 8 and positive plate 9 being stacked;
C, respectively welding of aluminum intercell connector 4 and nickel intercell connector 5 on positive plate 9, negative plate 7 will be born successively and be wound into volume Two 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 volume Two core 10 parallel connections, with aluminium intercell connector 4 and positive pole ear 1 welding; Nickel intercell connector 5 and negative lug 2 welding; Make volume core group;
E, the volume core group that will make are put into battery case, and encapsulation obtains finished product.
Wherein, the manufacture method of first volume core 6 is: at positive plate 9 welding positive pole ears 1, in negative plate 7 welding negative lug 2, blob of viscose 3 adopts the CPP blob of viscose, CPP is the polypropylene (PP) of producing by the curtain coating extrusion process in the plastic cement industry, and 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, blob of viscose 3 on the positive pole ear 1 is positioned at the top of aluminium intercell connector 4, and the blob of viscose 3 on the negative lug 2 is positioned at the top of nickel intercell connector 5.
The manufacture method of volume Two core 10 is: welding of aluminum intercell connector 4 on positive plate 9 at negative plate 7 welding nickel intercell connectors 5, is wound into volume Two core 10 after successively negative plate 7, barrier film 8 and positive plate 9 being stacked.
Except CPP blob of viscose 3 positions, the material of positive pole ear 1 is identical with the material of aluminium intercell connector 4, is the aluminium intercell connector; Except CPP blob of viscose 3 positions, the material of negative lug 2 is identical with the material of nickel intercell connector 5, is the nickel bar.
Determine the sum of inside battery volume core according to the needs of battery capacity, thereby determine the sheet number of volume Two core 10; According to the needs of battery capacity with a first volume core 6 and several volume Two core 10 parallel connections, with aluminium intercell connector 4 and anode ear 1 welding; Nickel intercell connector 5 and negative electrode lug 2 welding; Make volume core group; The volume core group of making is put into battery case, encapsulation.
Above-described embodiment is to explanation of the present invention, is not limitation of the invention, any scheme after the simple transformation of the present invention is all belonged to protection scope of the present invention.
Claims (4)
1. accurate Double-pole lug battery of multi-winding-core, comprise shell and installation volume core group in the enclosure, it is characterized in that: described volume core group comprises a first volume core (6) and at least one volume Two core (10), described first volume core (6) is connected in parallel with volume Two core (10), first volume core (6) is by negative plate (7), barrier film (8), positive plate (9) stacks to reel 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), 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); Volume Two core (10) is stacked to reel by negative plate (7), barrier film (8), positive plate (9) and forms, be welded with aluminium intercell connector (4) on the positive plate (9) of volume Two core (10), the thickness of aluminium intercell connector (4) is 0.2mm, be welded with nickel intercell connector (5) on the negative plate (7) of volume Two core (10), the thickness of nickel intercell connector (5) is 0.2mm; The upper end of all aluminium intercell connectors (4) is welded on the positive pole ear (1), the upper end of nickel intercell connector (5) is welded on the negative lug (2), blob of viscose (3) on the positive pole ear (1) is positioned at the top of aluminium intercell connector (4), and the blob of viscose (3) on the negative lug (2) is positioned at the top of nickel intercell connector (5).
2. the accurate Double-pole lug battery of a kind of multi-winding-core as claimed in claim 1, it is characterized in that: described volume Two core (10) equates with the width of first volume core (6), and is highly unequal.
3. the manufacture method of the accurate Double-pole lug battery of multi-winding-core is characterized in that: may further comprise the steps successively:
A, determine the sum of inside battery volume core according to the needs of battery capacity, thereby determine the sheet number of volume Two core (10);
B, weld upper positive pole ear (1) and negative lug (2) at positive plate (9), negative plate (7) respectively, be wound into first volume core (6) after successively negative plate (7), barrier film (8) and positive plate (9) being stacked;
C, respectively at the upper welding of aluminum intercell connector (4) of positive plate (9), negative plate (7) and nickel intercell connector (5), will bear successively and be wound into volume Two 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 volume Two core (10) parallel connections, with upper end and positive pole ear (1) welding of aluminium intercell connector (4); The upper end of nickel intercell connector (5) and negative lug (2) welding; Make volume core group;
E, the volume core group that will make are put into battery case, and encapsulation obtains the accurate Double-pole lug battery of multi-winding-core finished product.
4. the manufacture method of the accurate Double-pole lug battery of a kind of multi-winding-core as claimed in claim 3, it is characterized in that: weld positive pole ear (1) at positive plate (9) in the described b step, in negative plate (7) welding negative lug (2), be stained with blob of viscose (3) at positive pole ear (1) and negative lug (2) respectively, blob of viscose (3) adopts the CPP blob of viscose.
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| CN201210426058.3A CN102916156B (en) | 2012-10-30 | 2012-10-30 | Multi-winding core quasi-bipolar lug battery and manufacturing method thereof |
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| CN201210426058.3A CN102916156B (en) | 2012-10-30 | 2012-10-30 | Multi-winding core quasi-bipolar lug battery and manufacturing method thereof |
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| CN102916156A true CN102916156A (en) | 2013-02-06 |
| CN102916156B CN102916156B (en) | 2015-03-25 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN107742692A (en) * | 2017-11-10 | 2018-02-27 | 上海卡耐新能源有限公司 | A kind of power battery module and electric car |
| CN108390106A (en) * | 2018-02-28 | 2018-08-10 | 北京国能电池科技股份有限公司 | A kind of battery and preparation method thereof |
| CN108963175A (en) * | 2018-06-23 | 2018-12-07 | 深圳市创景新能源科技有限公司 | The production method of the pole piece structure of battery, battery roll core and battery roll core |
| CN109301144A (en) * | 2018-10-30 | 2019-02-01 | 邦泰宏图（深圳）科技有限责任公司 | A kind of lithium ion battery and battery pack |
| CN113363486A (en) * | 2021-05-28 | 2021-09-07 | 东莞维科电池有限公司 | Soft package lithium ion battery |
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| CN102916156B (en) | 2015-03-25 |
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Effective date of registration: 20160304 Address after: 313000 Changxin economic and Technological Development Zone, Zhejiang, Huzhou Patentee after: CHANGXING TIANHONG LITHIUM-ION BATTERY TECHNOLOGY CO., LTD. Address before: 313000 No. four, No. 199, Changxing County economic and Technological Development Zone, Huzhou, Zhejiang Patentee before: Zhejiang Zhenlong Battery Co., Ltd. |
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Address after: 313100 2-3 floor of No. 2 workshop, No. 559 the Great Wall Road, Changxing County Taihu street, Huzhou, Zhejiang. Patentee after: Zhejiang Tianhong lithium battery Limited by Share Ltd Address before: 313000 Changxin economic and Technological Development Zone, Huzhou, Zhejiang Patentee before: CHANGXING TIANHONG LITHIUM-ION BATTERY TECHNOLOGY CO., LTD. |
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