CN102760905A - High-capacity lithium battery - Google Patents
High-capacity lithium battery Download PDFInfo
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- CN102760905A CN102760905A CN2011101084570A CN201110108457A CN102760905A CN 102760905 A CN102760905 A CN 102760905A CN 2011101084570 A CN2011101084570 A CN 2011101084570A CN 201110108457 A CN201110108457 A CN 201110108457A CN 102760905 A CN102760905 A CN 102760905A
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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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Abstract
The invention discloses a high-capacity lithium battery which is in a package structure covering an anode plate, a cathode plate, an isolation film and electrolyte solution. The anode plate, the cathode plate and the isolation film are elongated respectively and are respectively provided with first long sides and second long sides parallel to the first long sides. The first long side of the anode plate forms an anode welding area, and other parts of the anode plate form an anode area. The second long side of the cathode plate forms a cathode welding area, and other parts of the cathode plate form a cathode area. The isolation film is sandwiched between the anode area and the cathode area. When the anode plate, the isolation film and the cathode plate are wound simultaneously, multiple layers of wound anode lugs are formed in the anode welding area, and multiple layers of wound cathode lugs are formed in the cathode welding area. Therefore, requirements for a high-capacity and high-rate battery pack can be met, and automatic production can be achieved so as to reduce cost.
Description
Technical field
The relevant a kind of lithium battery of the present invention refers to a kind ofly can satisfy big capacity, powerful battery pack reload request especially, and can the high power capacity lithium battery of automated production to reduce cost.
Background technology
Lithium battery mainly is the fit that adopts laminate patch or coiling at present; Wherein, as shown in Figure 5, insert and put barrier film a3 between the positive plate a1 of laminate patch fit and the negative plate a2; Each positive plate a1 welds with a positive pole ear a4 respectively; With after the negative lug a5 welding, each positive pole ear a4 is welded on the positive pole of lithium battery to each negative plate a2 more simultaneously respectively, and each negative lug a5 is welded on the negative pole of lithium battery more simultaneously.And it is as shown in Figure 6; The positive plate b1 of coiling fit, negative plate b2 and barrier film b3 are elongated respectively; The corner of positive plate b1 is provided with a small pieces positive pole ear b4 on the long limit of protrusion positive plate b1, and the corner of negative plate b2 then is a small pieces negative lug b5 who is provided with the long limit of protrusion negative plate b2.When barrier film b3 is folded between positive plate b1 and the negative plate b2; And after positive plate b1 one on top of another, barrier film b3 and negative plate b2 reeled simultaneously; Positive pole ear b4 is connected to the positive pole of lithium battery; Negative lug b5 is connected to the negative pole of lithium battery, and positive plate b1, barrier film b3 and the negative plate b2 of rolling is seated in the encapsulating structure that accommodates electrolyte solution, can form a lithium battery.
The positive plate b1 of above-mentioned winding method only is provided with a positive pole ear b4; Negative plate b2 only is provided with a negative lug b5, and the laminate patch mode then is provided with a plurality of positive pole ear a4 and negative lug a5, therefore; When current discharge, but the laminate patch mode obviously has the advantage of heavy-current discharge than winding method.But owing to the stack architecture of laminate patch has easy dislocation, production efficiency is low and the high shortcoming of investment goods cost, this then is to utilize the mode of coiling to overcome partly.Therefore, the lithium battery that winding method is lower for capacity, multiplying power discharging property is less demanding is comparatively suitable, and the laminate patch mode is applicable to high power capacity and powerful lithium battery.
Adopt the parallel connection of multireel core and also have at present, also be about to the mode of the battery parallel connection of several coilings, so that on the higher lithium battery of the capacity that is used in.Yet with the mode of production of multireel core parallel connection, its packaging efficiency is still not high, and can't satisfy the requirement of fully-automatic production.
In view of this, in order to provide a kind of improvement above-mentioned shortcoming, make the high power capacity lithium battery not only can satisfy big capacity, powerful battery pack reload request; And can automation produce in a large number; To reduce cost, long-pending experience and the constantly research and development improvement for many years of inventor has generation of the present invention then.
Summary of the invention
Main purpose of the present invention is providing a kind of high power capacity lithium battery; By with reeling behind positive plate, barrier film and the negative plate storehouse, make on one side of positive plate and form several positive pole ears, and form the structure of several negative lug at the another side of negative plate; In order to do satisfying big capacity, powerful battery pack reload request; Being useful on the big machinery, and can directly produce in a large number, to reduce cost with the automation mode.
For reaching the purpose of foregoing invention; The high power capacity lithium battery that the present invention designed with encapsulating structure clad anode sheet, negative plate, barrier film and electrolyte solution in wherein; This positive plate, negative plate, barrier film are distinguished elongated; So that positive plate, negative plate, barrier film have the second long limit on the first long limit and the parallel first long limit respectively, and this barrier film is folded between positive plate and the negative plate, and reels simultaneously with positive plate, negative plate; Its major technology characteristics are: the first long limit of this positive plate forms anodal weld zone, and other of positive plate partly forms positive polar region; And the second long limit of negative plate forms the negative pole weld zone, and other of negative plate partly forms the negative pole district, and this barrier film is folded between the negative pole district of positive polar region and negative plate of positive plate.
During enforcement, after positive plate, barrier film and negative plate were reeled simultaneously, anodal weld zone comprised the positive pole ear of several layers of coiling, and the negative pole weld zone comprises the negative lug of several layers of coiling.
During enforcement; The present invention more comprises a positive pole ear brace and a negative lug brace; One end of positive pole ear brace is welded on one deck positive pole ear of anodal weld zone, and an end of negative lug brace is welded on one deck negative lug of negative pole weld zone.
For ease of more deep understanding being arranged, after being specified in now to the present invention.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is positive plate, barrier film and the preceding assembly exploded view of negative plate combination of the present invention's one preferred embodiment.
Three-dimensional appearance sketch map when Fig. 2 makes up with negative plate for the positive plate of the present invention's one preferred embodiment, barrier film;
Fig. 3 is the end view after positive plate, barrier film and the negative plate of the present invention's one preferred embodiment makes up;
Fig. 4 is the generalized section of the present invention's one preferred embodiment;
Fig. 5 is positive plate, barrier film and the preceding assembly exploded view of negative plate combination of laminate patch fit in the prior art;
Fig. 6 is positive plate, barrier film and the negative plate assembly exploded view before the combination of reeling of coiling fit in the prior art.
[primary clustering symbol description] high power capacity lithium battery 1; Encapsulating structure 2; Positive plate 3; The first long limit 31,41,51; The second long limit 32,42,52; First minor face 33,43,53; Second minor face 34,44,54; Extendible flake 35; Anodal weld zone 36; Positive pole ear 361; Positive polar region 37; Negative plate 4; Negative pole weld zone 45; Negative lug 451; Negative pole district 46; Barrier film 5; Electrolyte solution 6; Positive pole ear brace 7; Anodal 71; Negative lug brace 8; Negative pole 81; Positive plate a1, b1; Negative plate a2, b2; Barrier film a3, b3; Positive pole ear a4, b4; Negative lug a5, b5.
Embodiment
See also Fig. 1, shown in 4, it is the preferred embodiment of high power capacity lithium battery 1 of the present invention, with encapsulating structure 2 clad anode sheets 3, negative plate 4, barrier film 5 and electrolyte solution 6.Wherein, This positive plate 3, negative plate 4 and barrier film 5 are elongated respectively, so that positive plate 3, negative plate 4 and barrier film 5 have second minor face (34,44,54) of second long limit (32,42,52), one first minor face (33,43,53) and parallel this first minor face (33,43,53) on one first long limit (31,41,51), parallel this first long limit (31,41,51) respectively.
During enforcement; This positive plate 3 is the aluminium foil of strip; This positive plate 3 also can be the positive electrode collector of other metal material, and this positive plate 3 forms an Extendible flake 35 near a side of first minor face 33, forms the anodal weld zone 36 and a positive polar region 37 of a strip near a side of second minor face 34.This positive pole weld zone 36 is for being formed on the aluminium foil near 31 positions, the first long limit; And other partly; That is on the aluminium foil of anodal weld zone 36; Then be anode sizing agent at coating layer of mixing positive electrode, conductive agent, adhesive agent and solvent, and at anode sizing agent after oven dry and spreading program, form this positive polar region 37.
This negative plate 4 is the Copper Foil of strip; This negative plate 4 also can be the negative electrode collector of other metal material, and this negative plate 4 comprises a negative pole weld zone 45 and a negative pole district 46, wherein; This negative pole weld zone 45 is for being formed on the Copper Foil of 42 positions, the second long limit; Other of Copper Foil partly then is the cathode size at coating layer of mixing negative material, conductive agent, adhesive agent and solvent, and at cathode size after oven dry and spreading program, form this negative pole district 46.
And this barrier film 5 is an insulating material, can be polyethylene (PE), polypropylene (PP) or above-mentioned sandwich construction such as PE/PP/PE.During enforcement; When negative plate 4 is placed in the top of positive plate 3; This barrier film 5 is provided with two, and wherein a slice barrier film 5 is folded between the negative pole district 46 of positive polar region 37 and negative plate 4 of positive plate 3, and another sheet barrier film 5 then is 46 tops, negative pole district that are seated in negative plate 4.
By this; Shown in Fig. 2～4, when positive plate 3, barrier film 5 and negative plate 4 are reeled simultaneously, and after coating fully with the Extendible flake 35 of positive plate 3; All can be intercepted between the positive polar region 37 of positive plate 3 and the negative pole district 46 of negative plate 4 by barrier film 5; And behind coiling, this positive pole weld zone 36 will form the several layers of positive pole ear 361 one on top of another of reeling, and negative pole weld zone 45 then can form the several layers of negative lug 451 one on top of another of reeling.And when the positive pole 71 that is welded on positive pole ear 361 and battery with the two ends of a positive pole ear brace 7 respectively; And be welded on respectively with the two ends of a negative lug brace 8 81 last times of negative pole of negative lug 451 and battery; Add electrolyte solution 6 in encapsulating structure 2, can be combined into a lithium battery.
During enforcement, this positive pole weld zone 36 also can be 361 compositions of several positive pole ears that are interrupted, and negative pole weld zone 45 also can be 451 compositions of several negative lug of being interrupted.By this, after positive plate 3, barrier film 5 are reeled with negative plate 4 simultaneously, can let several positive pole ears 361 and several negative lug 451 be state one on top of another respectively equally.
Thus; Because positive plate of the present invention, barrier film are wound on negative plate simultaneously; And behind coiling; Let positive plate form the number positive polar region and the positive pole ears that change layer by layer, and let negative plate form negative pole district and negative lug that number changes layer by layer so that each positive polar region one on top of another and each negative pole one on top of another district respectively via each positive pole ear one on top of another and negative lug with the positive and negative electrode conducting of battery.Promptly can improve the shortcoming of coiling and laminate patch; And effective advantage that combines coiling and laminate patch, make and not only can satisfy big capacity, powerful battery pack reload request, to be useful on the big machinery; And can directly produce in a large number with the automation mode, to reduce cost.
In sum; According to the content that preceding text disclosed; The present invention really can reach the intended purposes of invention, and a kind of not only can satisfy big capacity, powerful battery pack reload request are provided, and can automation produce the high power capacity lithium battery to reduce cost in a large number; Have the value of utilizing on the industry, the whence proposes application for a patent for invention in accordance with the law.
Claims (5)
1. high power capacity lithium battery; With encapsulating structure clad anode sheet, negative plate, barrier film and electrolyte solution; This positive plate, negative plate, barrier film are elongated respectively, so that positive plate, negative plate, barrier film have the second long limit on the first long limit and parallel this first long limit respectively, and this barrier film is folded between positive plate and the negative plate; And reel simultaneously with positive plate, negative plate, it is characterized in that:
The first long limit of this positive plate forms an anodal weld zone, and other of this positive plate partly forms a positive polar region; And the second long limit of this negative plate forms a negative pole weld zone, and other of this negative plate partly forms a negative pole district, and this barrier film is folded between the negative pole district of positive polar region and negative plate of positive plate.
2. high power capacity lithium battery as claimed in claim 1, wherein, after positive plate, barrier film and negative plate were reeled simultaneously, this positive pole weld zone comprised the positive pole ear of several layers of coiling.
3. according to claim 1 or claim 2 high power capacity lithium battery, wherein, after positive plate, barrier film and negative plate were reeled simultaneously, this negative pole weld zone comprised the negative lug of several layers of coiling.
4. high power capacity lithium battery as claimed in claim 3; More comprise a positive pole ear brace and a negative lug brace; One end of positive pole ear brace is welded on one deck positive pole ear of anodal weld zone, and an end of negative lug brace is welded on one deck negative lug of negative pole weld zone.
5. high power capacity lithium battery as claimed in claim 1, wherein, a side of this strip positive plate forms an Extendible flake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101084570A CN102760905A (en) | 2011-04-28 | 2011-04-28 | High-capacity lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101084570A CN102760905A (en) | 2011-04-28 | 2011-04-28 | High-capacity lithium battery |
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| Publication Number | Publication Date |
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| CN102760905A true CN102760905A (en) | 2012-10-31 |
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| CN2011101084570A Pending CN102760905A (en) | 2011-04-28 | 2011-04-28 | High-capacity lithium battery |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104221201A (en) * | 2013-02-15 | 2014-12-17 | 株式会社Lg化学 | Electrode assembly and polymer secondary battery cell comprising same |
| CN104247127A (en) * | 2013-02-15 | 2014-12-24 | 株式会社Lg化学 | Electrode assembly and polymer secondary battery cell comprising same |
| CN108807810A (en) * | 2017-05-05 | 2018-11-13 | 迪吉亚节能科技股份有限公司 | Solid union lithium cell core pole piece and the lithium cell core for using the pole piece |
| CN109273757A (en) * | 2017-07-17 | 2019-01-25 | 通用汽车环球科技运作有限责任公司 | The increased battery unit in tab region and its manufacturing method and equipment |
| CN113363486A (en) * | 2021-05-28 | 2021-09-07 | 东莞维科电池有限公司 | Soft package lithium ion battery |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080305393A1 (en) * | 2007-06-11 | 2008-12-11 | Hitachi Vehicle Energy, Ltd. | Lithium-ion secondary battery |
| CN201478376U (en) * | 2009-09-04 | 2010-05-19 | 嘉卓远东企业有限公司 | Pole plate of lithium series secondary battery and lithium series secondary battery |
| CN201536135U (en) * | 2009-06-17 | 2010-07-28 | 广州丰江电池新技术股份有限公司 | Lithium battery |
| CN201725845U (en) * | 2010-08-03 | 2011-01-26 | 唐菊香 | Cell of coiled lithium ion battery and coiled lithium ion battery |
-
2011
- 2011-04-28 CN CN2011101084570A patent/CN102760905A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080305393A1 (en) * | 2007-06-11 | 2008-12-11 | Hitachi Vehicle Energy, Ltd. | Lithium-ion secondary battery |
| CN201536135U (en) * | 2009-06-17 | 2010-07-28 | 广州丰江电池新技术股份有限公司 | Lithium battery |
| CN201478376U (en) * | 2009-09-04 | 2010-05-19 | 嘉卓远东企业有限公司 | Pole plate of lithium series secondary battery and lithium series secondary battery |
| CN201725845U (en) * | 2010-08-03 | 2011-01-26 | 唐菊香 | Cell of coiled lithium ion battery and coiled lithium ion battery |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104221201A (en) * | 2013-02-15 | 2014-12-17 | 株式会社Lg化学 | Electrode assembly and polymer secondary battery cell comprising same |
| CN104247127A (en) * | 2013-02-15 | 2014-12-24 | 株式会社Lg化学 | Electrode assembly and polymer secondary battery cell comprising same |
| CN104221201B (en) * | 2013-02-15 | 2016-08-31 | 株式会社Lg化学 | Electrode assemblies and include the polymer secondary battery unit of this electrode assemblies |
| CN104247127B (en) * | 2013-02-15 | 2016-09-14 | 株式会社Lg化学 | Electrode assemblies and include the polymer secondary battery unit of this electrode assemblies |
| US9947909B2 (en) | 2013-02-15 | 2018-04-17 | Lg Chem. Ltd. | Electrode assembly and polymer secondary battery cell including the same |
| US10418609B2 (en) | 2013-02-15 | 2019-09-17 | Lg Chem, Ltd. | Electrode assembly and polymer secondary battery cell including the same |
| US10615392B2 (en) | 2013-02-15 | 2020-04-07 | Lg Chem, Ltd. | Electrode assembly and polymer secondary battery cell including the same |
| US10804520B2 (en) | 2013-02-15 | 2020-10-13 | Lg Chem, Ltd. | Electrode assembly and polymer secondary battery cell including the same |
| US11476546B2 (en) | 2013-02-15 | 2022-10-18 | Lg Energy Solution, Ltd. | Electrode assembly and polymer secondary battery cell including the same |
| CN108807810A (en) * | 2017-05-05 | 2018-11-13 | 迪吉亚节能科技股份有限公司 | Solid union lithium cell core pole piece and the lithium cell core for using the pole piece |
| CN109273757A (en) * | 2017-07-17 | 2019-01-25 | 通用汽车环球科技运作有限责任公司 | The increased battery unit in tab region and its manufacturing method and equipment |
| 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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Application publication date: 20121031 |