CN103531848A - Overlapping winding preparation method of lithium ion secondary battery - Google Patents
Overlapping winding preparation method of lithium ion secondary battery Download PDFInfo
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- CN103531848A CN103531848A CN201310416046.7A CN201310416046A CN103531848A CN 103531848 A CN103531848 A CN 103531848A CN 201310416046 A CN201310416046 A CN 201310416046A CN 103531848 A CN103531848 A CN 103531848A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0583—Construction or manufacture of accumulators with folded construction elements except wound ones, i.e. folded positive or negative electrodes or separators, e.g. with "Z"-shaped electrodes or separators
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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
Abstract
The invention discloses an overlapping winding preparation method of a lithium ion secondary battery. The overlapping winding preparation method comprises the following steps of: respectively continuously coating an aluminum foil or copper foil with prepared positive pole slurry and prepared negative pole slurry in a single-surface or dual-surface manner, drying to form a positive pole and a negative pole; after the positive pole and the negative pole are rolled, dried and compacted, cutting a blank aluminum foil or blank copper foil on the coated positive pole edge and the coated negative pole edge to form a lug positive pole and a lug negative pole of a positive lug and a negative lug with different distances, sequentially overlapping the lug positive lug, diaphragm paper and the lug negative pole into rolls, rolling into a battery cell and jointing glue on a tail part of the lug negative pole; respectively welding the lugs on lug welding parts of the battery cell, respectively welding a flexible package aluminum lug and a copper plated nickel lug on the positive lug welded part and the negative lug welded part and respectively jointing high-temperature gummed paper; and manufacturing into a flexible package lithium ion secondary battery by a processing subsequence procedure. According to the battery prepared by adopting the method, the normal-temperature charge and discharge properties are improved, the battery heat yield is reduced, and the service life of the battery is prolonged.
Description
Technical field
The present invention relates to electronic technology field, relate in particular to the folded takeup type preparation method of a kind of lithium rechargeable battery.
Background technology
In recent years, lithium rechargeable battery is as high power heavy-current discharge battery, applies more and more extensively, to the properties of battery, requires also more and more higher.Current known lithium rechargeable battery universal architecture has two kinds: winding-structure and lamination.
The battery production efficiency of tradition winding-structure is high, and pole piece corner area is little, is easy to effective control of mass production and pole piece burrs on edges, shedding; The charging, discharging electric batteries multiplying power of tradition lamination is higher, and quantity of heat production is little, adapts to the use under the high power discharge condition under certain limit; But pole piece corner area is larger, and production efficiency is relatively low, be unfavorable for the control of mass production and pole piece burrs on edges, shedding.
In recent years, lithium rechargeable battery because operating voltage is high, large, the memory-less effect of energy density, have extended cycle life, the advantage such as pollution-free, be applied to more and more widely, in consumption, power, energy storage and special cells, progressively replace the major product that traditional rechargeable battery becomes field of batteries.Along with the expansion in market, high power density power equipment is also increasing to the demand of lithium rechargeable battery, as all there is very large demand in the markets such as electric motor car power supply, electronic class instrument, model plane.Require battery at-20 ℃～+ 60 ℃, under (15-30) C discharge-rate, still can work, its conventional lithium rechargeable battery has the defect that is difficult to go beyond.Be mainly reflected in:
1) discharge-rate is little, is generally suitable for the continuous discharge of the following electric current of normal temperature 3C, the required power requirement in the time of cannot meeting high-power equipment work;
2) internal resistance of cell is large, and for example 10Ah battery 1KHz AC impedance is conventionally more than 3m Ω;
3) under the large electric current charge and discharge of battery condition, temperature rise is higher, has a strong impact on the cycle life of battery.
Therefore, urgently a kind of lithium rechargeable battery is folded takeup type preparation side, to address the above problem.
Summary of the invention
The object of the present invention is to provide the folded takeup type of a kind of lithium rechargeable battery preparation side, to address the above problem.
To achieve these goals, technical scheme of the present invention is: provide a kind of lithium rechargeable battery to fold takeup type preparation method, comprise the following steps: divide single, double surface to be coated on continuously on aluminium foil the anode sizing agent preparing, be dried to positive plate, by the cathode size preparing, divide single, double surface to be coated on continuously on Copper Foil, be dried to negative plate; After the dry compacting of positive plate rolling, the blank aluminium foil Partial Resection at coated positive plate edge is made to some not equidistant anode ears, thereby make lug positive plate, after the dry compacting of negative plate rolling, the blank Copper Foil Partial Resection at coated negative plate edge is made to some not equidistant negative electrode lugs, thereby make lug negative plate; Lug positive plate, diaphragm paper, lug negative plate are superposeed after rolling successively, be wound into battery and stick colloid in lug negative plate ending place; Respectively at place, the tab welding position soldering polar ear of battery, in anode ear welding position and the place, negative pole lug welding position of battery, weld respectively flexible package aluminium pole ears and copper nickel plating lug and stick respectively high tempreture tape; The battery that welds lug is packed in advance in die-cut good plastic-aluminum combined putamina, top, side seal, dry dewatering, injects after high power function electrolyte, by common processes processing subsequent handling, is made into flexible packing lithium ion secondary battery.
Divide single, double surface to be coated on continuously on aluminium foil by one side coater the anode sizing agent preparing; Divide single, double surface to be coated on Copper Foil continuously by one side coater the cathode size preparing.
The laser of controlling by the PLC programming is in advance made some not equidistant anode ears by the blank aluminium foil Partial Resection at coated positive plate edge; The laser of controlling by the PLC programming is in advance made some not equidistant negative electrode lugs by the blank Copper Foil Partial Resection of scheming the edge of coated negative plate.Spacing on spacing on the laser control lug positive plate that PLC controls between each anode ear and lug negative plate between each negative electrode lug, has solved the problem of cell core lug contraposition difficulty after coiling; Laser cutting solves the problem of pole piece burrs on edges and dry linting; Winding-structure has solved the low and large problem of pole piece corner area of lamination efficiency.
Compared with prior art, the folded takeup type preparation method of lithium rechargeable battery of the present invention by lug parallel connection to reduce the internal resistance of battery, the porosity that adopts special high magnification formula and applicable pole piece heavy-current discharge by high power function electrolyte, anode and cathode slurry to be to reduce the migration distance of ion and to improve its migration rate, thus improve the quick charge and discharge performance of normal temperature and large current discharging capability, reduce battery quantity of heat production, improve lithium rechargeable battery fail safe, extend battery.
By following description also by reference to the accompanying drawings, it is more clear that the present invention will become, and these accompanying drawings are used for explaining embodiments of the invention.
Accompanying drawing explanation
Fig. 1 is the positive plate schematic diagram that in the folded takeup type preparation method of lithium rechargeable battery of the present invention, first step is made.
Fig. 2 is the negative plate schematic diagram that in the folded takeup type preparation method of lithium rechargeable battery of the present invention, first step is made.
Fig. 3 is the lug positive plate schematic diagram that in the folded takeup type preparation method of lithium rechargeable battery of the present invention, second step is made.
Fig. 4 is the lug negative plate schematic diagram that in the folded takeup type preparation method of lithium rechargeable battery of the present invention, second step is made.
Fig. 5 is the structural representation of the battery forming process of third step in the folded takeup type preparation method of lithium rechargeable battery of the present invention.
Fig. 6 is the structural representation of battery after the 4th step in the folded takeup type preparation method of lithium rechargeable battery of the present invention.
Fig. 7 is the structural representation that lithium rechargeable battery of the present invention is folded the lithium rechargeable battery making after takeup type preparation method the 5th step.
Fig. 8 is the folded takeup type preparation method's of lithium rechargeable battery of the present invention process principle figure.
Embodiment
Referring to figs. 1 to Fig. 8, lithium rechargeable battery of the present invention is folded takeup type preparation method comprise the following steps: first step s1,10 minutes single, double surfaces of the anode sizing agent preparing are coated on aluminium foil 15 continuously, be dried to positive plate 20(as shown in Figure 1), by the cathode size preparing 30, divide single, double surface to be coated on continuously on Copper Foil 35, be dried to negative plate 40(as shown in Figure 2); Second step s2, after the dry compacting of positive plate 20 rolling, blank aluminium foil 151 Partial Resections at coated positive plate 20 edges are made to some not equidistant anode ears 25, thereby make lug positive plate 20 ' (as shown in Figure 3), after the dry compacting of negative plate 40 rolling, blank Copper Foil 351 Partial Resections at coated negative plate 40 edges are made to some not equidistant negative electrode lugs 45, thereby make lug negative plate 40 ' (as shown in Figure 4); Third step s3, superposes lug positive plate 20 ', diaphragm paper 50, lug negative plate 40 ' after rolling successively, is wound into battery 55 and sticks colloid 60(as shown in Figures 5 and 6 in lug negative plate 40 ' ending place); The 4th step s4, at the tab welding position of battery 55 551 place's soldering polar ears 552, in anode ear welding position 553 and 554 places, negative pole lug welding position of battery 55, weld respectively flexible package aluminium pole ears 555 and copper nickel plating lug 556 and stick respectively high tempreture tape (as shown in Figure 6) respectively; The 5th step s5, packs the battery 55 that welds lug in advance in die-cut good plastic-aluminum combined putamina 65 top, side seal, dry dewatering, inject after high power function electrolyte, by common processes processing subsequent handling, be made into flexible packing lithium ion secondary battery (as shown in Figure 7).
Preferably, is coated on 10 minutes single, double surfaces of the anode sizing agent preparing on aluminium foil 15 continuously by one side coater; 30 minutes single, double surfaces of the cathode size preparing are coated on Copper Foil 35 continuously by one side coater.The laser of controlling by the PLC programming is in advance made some not equidistant anode ears 25 by 151 excisions of the blank aluminium foil at coated positive plate edge; The laser of controlling by the PLC programming is in advance made some not equidistant negative electrode lugs 45 by blank Copper Foil 351 Partial Resections of scheming the edge of coated negative plate.Spacing on spacing on the laser control lug positive plate that PLC controls between each anode ear and lug negative plate between each negative electrode lug, has solved the problem of cell core lug contraposition difficulty after coiling; Laser cutting solves the problem of pole piece burrs on edges and dry linting; Winding-structure has solved the low and large problem of pole piece corner area of lamination efficiency.
The flexible packing lithium ion secondary battery making by the folded takeup type preparation method of lithium rechargeable battery of the present invention, normal temperature AC impedance is less than 0.8m Ω; Normal temperature 2C charging constant current ratio is greater than 94%, the 0.5C charging 1C discharge cycles life-span more than 1500 times, and 20C/0.5C discharge capacity ratio is more than 95%.
The folded takeup type preparation method of lithium rechargeable battery of the present invention by lug parallel connection to reduce the internal resistance of battery, the porosity that adopts special high magnification formula and applicable pole piece heavy-current discharge by high power function electrolyte, anode and cathode slurry to be to reduce the migration distance of ion and to improve its migration rate, thus improve the quick charge and discharge performance of normal temperature and large current discharging capability, reduce battery quantity of heat production, improve lithium rechargeable battery fail safe, extend battery.
Present invention is described for above combination most preferred embodiment, but the present invention is not limited to the embodiment of above announcement, and should contain the various modifications of carrying out according to the essence of the present embodiment, equivalent combinations.
Claims (3)
1. the folded takeup type preparation method of lithium rechargeable battery, is characterized in that, comprises the following steps:
Divide single, double surface to be coated on continuously on aluminium foil the anode sizing agent preparing, be dried to positive plate, by the cathode size preparing, a minute single, double surface is coated on Copper Foil continuously, is dried to negative plate;
After the dry compacting of positive plate rolling, the blank aluminium foil Partial Resection at coated positive plate edge is made to some not equidistant anode ears, thereby make lug positive plate, after the dry compacting of negative plate rolling, the blank Copper Foil Partial Resection at coated negative plate edge is made to some not equidistant negative electrode lugs, thereby make lug negative plate;
Lug positive plate, diaphragm paper, lug negative plate are superposeed after rolling successively, be wound into battery and stick colloid in lug negative plate ending place;
Respectively at place, the tab welding position soldering polar ear of battery, in anode ear welding position and the place, negative pole lug welding position of battery, weld respectively flexible package aluminium pole ears and copper nickel plating lug and stick respectively high tempreture tape;
The battery that welds lug is packed in advance in die-cut good plastic-aluminum combined putamina, top, side seal, dry dewatering, injects after high power function electrolyte, by common processes processing subsequent handling, is made into flexible packing lithium ion secondary battery.
2. the folded takeup type preparation method of lithium rechargeable battery as claimed in claim 1, is characterized in that: divide single, double surface to be coated on continuously on aluminium foil by one side coater the anode sizing agent preparing; Divide single, double surface to be coated on Copper Foil continuously by one side coater the cathode size preparing.
3. the folded takeup type preparation method of lithium rechargeable battery as claimed in claim 1, is characterized in that: the laser of controlling by the PLC programming is in advance made some not equidistant anode ears by the blank aluminium foil Partial Resection at coated positive plate edge; The laser of controlling by the PLC programming is in advance made some not equidistant negative electrode lugs by the blank Copper Foil Partial Resection of scheming the edge of coated negative plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310416046.7A CN103531848A (en) | 2013-09-13 | 2013-09-13 | Overlapping winding preparation method of lithium ion secondary battery |
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| CN201310416046.7A CN103531848A (en) | 2013-09-13 | 2013-09-13 | Overlapping winding preparation method of lithium ion secondary battery |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104600250A (en) * | 2014-11-21 | 2015-05-06 | 天津力神电池股份有限公司 | Preparation method of lithium ion battery multi-pole-ear pole piece, preparation method of pole group and battery |
| CN105390657A (en) * | 2015-11-28 | 2016-03-09 | 西安瑟福能源科技有限公司 | Manufacturing method for micro soft package lithium ion battery |
| CN105489825A (en) * | 2015-12-01 | 2016-04-13 | 西安瑟福能源科技有限公司 | Manufacturing method for power type flexibly-packaged lithium ion battery cell |
| CN108711641A (en) * | 2018-08-29 | 2018-10-26 | 深圳易新能源科技有限公司 | The production method of pure tertiary cathode material battery core |
| CN112510325A (en) * | 2020-10-28 | 2021-03-16 | 天津空间电源科技有限公司 | Cylindrical battery with die-cut tabs and manufacturing process thereof |
| CN112614965A (en) * | 2020-11-27 | 2021-04-06 | 惠州市豪鹏科技有限公司 | Preparation method of battery pole piece |
| CN114050324A (en) * | 2021-10-19 | 2022-02-15 | 惠州锂威新能源科技有限公司 | Multi-tab battery cell winding process, multi-tab battery cell, battery and electronic product |
| CN116706090A (en) * | 2022-12-30 | 2023-09-05 | 荣耀终端有限公司 | Battery cell, battery and electronic equipment |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103187593A (en) * | 2011-12-30 | 2013-07-03 | 万向电动汽车有限公司 | Preparation method of flexible-package high-power lithium ion power battery |
| CN203071158U (en) * | 2013-02-27 | 2013-07-17 | 湖南桑顿新能源有限公司 | Low-temperature aluminum casing lithium ion battery with multi-tab winding structure |
-
2013
- 2013-09-13 CN CN201310416046.7A patent/CN103531848A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103187593A (en) * | 2011-12-30 | 2013-07-03 | 万向电动汽车有限公司 | Preparation method of flexible-package high-power lithium ion power battery |
| CN203071158U (en) * | 2013-02-27 | 2013-07-17 | 湖南桑顿新能源有限公司 | Low-temperature aluminum casing lithium ion battery with multi-tab winding structure |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104600250A (en) * | 2014-11-21 | 2015-05-06 | 天津力神电池股份有限公司 | Preparation method of lithium ion battery multi-pole-ear pole piece, preparation method of pole group and battery |
| CN105390657A (en) * | 2015-11-28 | 2016-03-09 | 西安瑟福能源科技有限公司 | Manufacturing method for micro soft package lithium ion battery |
| CN105489825A (en) * | 2015-12-01 | 2016-04-13 | 西安瑟福能源科技有限公司 | Manufacturing method for power type flexibly-packaged lithium ion battery cell |
| CN105489825B (en) * | 2015-12-01 | 2018-07-03 | 西安瑟福能源科技有限公司 | A kind of manufacturing method of power-type flexible packing lithium ion battery battery core |
| CN108711641A (en) * | 2018-08-29 | 2018-10-26 | 深圳易新能源科技有限公司 | The production method of pure tertiary cathode material battery core |
| CN112510325A (en) * | 2020-10-28 | 2021-03-16 | 天津空间电源科技有限公司 | Cylindrical battery with die-cut tabs and manufacturing process thereof |
| CN112614965A (en) * | 2020-11-27 | 2021-04-06 | 惠州市豪鹏科技有限公司 | Preparation method of battery pole piece |
| CN114050324A (en) * | 2021-10-19 | 2022-02-15 | 惠州锂威新能源科技有限公司 | Multi-tab battery cell winding process, multi-tab battery cell, battery and electronic product |
| CN116706090A (en) * | 2022-12-30 | 2023-09-05 | 荣耀终端有限公司 | Battery cell, battery and electronic equipment |
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Application publication date: 20140122 |