CN105680100A - Lithium-ion battery and manufacturing method thereof - Google Patents
Lithium-ion battery and manufacturing method thereof Download PDFInfo
- Publication number
- CN105680100A CN105680100A CN201610170295.6A CN201610170295A CN105680100A CN 105680100 A CN105680100 A CN 105680100A CN 201610170295 A CN201610170295 A CN 201610170295A CN 105680100 A CN105680100 A CN 105680100A
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- Prior art keywords
- barrier film
- positive plate
- plate
- ion battery
- lithium ion
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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
- H01M10/04—Construction or manufacture in general
- H01M10/0459—Cells or batteries with folded separator between plate-like electrodes
-
- 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
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention relates to a lithium-ion battery and a manufacturing method thereof. The lithium-ion battery comprises a battery core assembly, wherein the battery core assembly comprises a plurality of positive plates and a plurality of negative plates; the plurality of negative plates and the plurality of positive plates are alternately arranged; the positive plates and the negative plates are stacked at intervals; and the positive plates are separated from the negative plates through a membrane. The lithium-ion battery and the manufacturing method thereof provided by the invention have the production efficiency of a wound battery; and a laminated battery has better battery performance than the wound battery. Meanwhile, the positive plates and the negative plates are fixed on the membrane, so that the interface stability and the safety of the battery are improved.
Description
Technical field
The present invention relates to technical field of lithium batteries, be specifically related to a kind of lithium ion battery and preparation method thereof.
Background technology
Lithium rechargeable battery is high due to its voltage, and the life-span is long, specific energy high, since the commercialization of last century end, along with consumption electronic product such as mobile phone, notebook computer, developing rapidly of digital camera. Obtain large-scale application, the energy that recent years meaning increases the weight of and environmental problem, make lithium rechargeable battery begin at automobile is widely applied as power resources and come, this higher requirement also lithium secondary battery proposed, wherein essential point is that a little in groups after concordance.
The existing takeup type structure of electrokinetic cell being applied on automobile at present, has again lamination. Coiled battery is compared to laminated batteries, advantage is in that the efficiency produced is high, operation is simple and easy to control, but coiled battery is due to internal structure heterogeneity, cyclic process causes inevitable deformation owing to its each position tension force is inconsistent, cause that its concordance is poor, even there is very big potential safety hazard. Although laminated batteries significantly can be promoted compared to coiled battery on battery performance, but operation is loaded down with trivial details, and production efficiency is low, particularly stacks gradually the stage at single pole piece, and the time is longer.
Provided by the inventionNovelThe battery of structure, has taken into account the high efficiency of coiled battery and the excellent battery performance of laminated batteries, simultaneously because both positive and negative polarity pole piece is fixed on barrier film, interface stability and the safety of battery are all improved.
Summary of the invention
It is an object of the invention to provide a kind of lithium ion battery and preparation method thereof, the battery of this structure has taken into account the high efficiency of coiled battery and the excellent battery performance of laminated batteries, simultaneously because both positive and negative polarity pole piece is fixed on barrier film, interface stability and the safety of battery are all improved.
For achieving the above object, present invention employs techniques below scheme: a kind of lithium ion battery, including battery core assembly, described battery core assembly includes multiple positive plate and the multiple negative plates being arranged alternately with multiple positive plates, described positive plate and negative plate are that interval stacking is arranged, and are spaced from each other by barrier film between described positive plate and negative plate.
Described barrier film includes the first barrier film and the second barrier film, and described battery core assembly is stacked gradually winding by positive plate, the first barrier film, negative plate and the second barrier film and forms, and the outer end of described first barrier film and the second barrier film is fixed by adhesive tape.
Described positive plate and negative plate are fixed on the surface of the first barrier film, the second barrier film respectively through the mode of hot compound or concora crush.
Described first barrier film and the second barrier film are by hot compoiste adhering together.
The surface of described first barrier film and the second barrier film is coated with polymeric binder.
The thickness of described polymeric binder is 0.5～30 μm.
Described polymeric binder is polyvinylidene fluoride-co-hexafluoropropene, polyvinylidene fluoride-co-trifluoro-ethylene, polymethyl methacrylate, butyl polyacrylate, polyacrylonitrile, cellulose acetate-butyrate, polyvinylpyrrolidone, poly(ethylene oxide), cyanoethyl pullulan, any one or the two or more mixture in cyanoethyl polyvinylalcohol, cyanethyl cellulose, cyanoethyl sucrose, carboxymethyl cellulose.
The manufacture method of a kind of lithium ion battery, comprises the following steps:
(1) choose the first barrier film, the second barrier film, multiple positive plate and multiple negative plate, positive plate is sequentially arranged on first barrier film being coated with polymeric binder, negative plate is sequentially arranged on the second barrier film being coated with polymeric binder;
(2) the first barrier film of positive plate will be posted and post the second barrier film of negative plate and be fixed respectively through hot pressing;
(3) barrier film of two positive plates after fixing with negative plate is overlapped mutually, is then wound, after its end is fixing by adhesive tape, obtains battery core assembly.
Hot pressing pressure described in step (2) is 1000Kg, and hot pressing time is 2s.
Described positive plate is superimposed upon the top of negative plate, and the distance between first positive plate and second positive plate of winding start point is the thickness sum of positive plate width, the thickness of positive plate, the thickness of negative plate, the thickness of the first barrier film and the second barrier film.
As shown from the above technical solution, lithium ion battery of the present invention and preparation method thereof, both there is the production efficiency of winding battery, there is again laminated batteries relative to the better battery performance of winding battery. Simultaneously because both positive and negative polarity pole piece is fixed on barrier film, interface stability and the safety of battery are all improved.
Accompanying drawing explanation
Fig. 1It it is the structural representation of the present inventionFigure;
Fig. 2It it is the positive plate of the present invention vertical view that is arranged on the first barrier filmFigure;
Fig. 3It it is the negative plate of the present invention vertical view that is arranged on the second barrier filmFigure;
Fig. 4It isFig. 3It is superimposed uponFig. 4On vertical viewFigure;
Fig. 5It isFig. 3It is superimposed uponFig. 4On side-lookingFigure。
Detailed description of the invention
Below in conjunction withAccompanying drawingThe present invention will be further described:
Such as Fig. 1Shown in, the lithium ion battery of the present embodiment, including battery core assembly, battery core assembly includes multiple positive plate 3 and the multiple negative plates 4 being arranged alternately with multiple positive plates 3, positive plate 3 and negative plate 4 are arranged in interval stacking, are spaced from each other by barrier film between positive plate 3 and negative plate 4. In the present embodiment, barrier film is made up of the first barrier film 1 and the second barrier film 2, and battery core assembly is by being stacked gradually winding formed by positive plate the 3, first barrier film 1, negative plate 4 and the second barrier film 2, and the outer end of the first barrier film 1 and the second barrier film 2 is fixed by adhesive tape 5.
Positive plate 3 and negative plate 4 are fixed on the surface of first barrier film the 1, second barrier film 2 respectively through the mode of hot compound or concora crush. Together with first barrier film 1 passes through hot compoiste adhering with the second barrier film 2. The surface of the first barrier film 1 and the second barrier film 2 is coated with polymeric binder. The thickness of this polymeric binder is 0.5～30 μm. In the present embodiment, polymeric binder is polyvinylidene fluoride-co-hexafluoropropene, polyvinylidene fluoride-co-trifluoro-ethylene, polymethyl methacrylate, butyl polyacrylate, polyacrylonitrile, cellulose acetate-butyrate, polyvinylpyrrolidone, poly(ethylene oxide), cyanoethyl pullulan, any one or the two or more mixture in cyanoethyl polyvinylalcohol, cyanethyl cellulose, cyanoethyl sucrose, carboxymethyl cellulose.
The manufacture method of the lithium ion battery of the present embodiment: choose multiple positive plate 3 and negative plate 4, positive plate 3 is to be prepared from conductive current collector by positive active material even application, here conductive current collector is preferably aluminium foil, negative plate 4 is for negative electrode active material and is coated in being prepared from conductive current collector, here conductive current collector is preferably Copper Foil, positive plate 3 and negative plate 4 is cut into according to fixing sizeAs Fig. 3,4Shown shape. Wherein, ledge respectively exposes aluminium foil outside and Copper Foil for coating positive pole and negative electrode active material. Through vision-based detection, positive plate 3 is sequentially arranged on the first barrier film 1 being coated with polymeric binder, negative plate 4 is sequentially arranged on the second barrier film 2 being coated with polymeric binder, in order to prevent the both positive and negative polarity when winding from directly contacting and cause short circuit, the distance between first positive plate and second positive plate of winding start point should be the thickness sum of positive plate width, the thickness of positive plate, the thickness of negative plate, the thickness of the first barrier film and the second barrier film. Through hot pressing after arrangement, hot pressing pressure is 1000Kg, and the time is 2s, and after hot pressing, positive plate 3 and negative plate 4 have been separately fixed on the first barrier film 1 and the second barrier film 2.Such as Fig. 2Shown in. The barrier film securing positive plate 3 and negative plate 4 by two is overlapped mutually,As Fig. 4,5Shown in, it is ensured that the aluminium foil that each positive plate 3 is prominent after winding is perpendicular to coiling direction alignment, and the Copper Foil that each negative plate 4 highlights is perpendicular to coiling direction alignment. After superposition, according toFig. 5The direction of arrow is wound, the structure obtainedSuch as Fig. 1Shown in.
Embodiment described above is only that the preferred embodiment of the present invention is described, not the scope of the present invention is defined, under the premise designing spirit without departing from the present invention, various deformation that technical scheme is made by those of ordinary skill in the art and improvement, all should fall into the present inventionClaimIn the protection domain that book is determined.
Claims (10)
1. a lithium ion battery, it is characterized in that: include battery core assembly, described battery core assembly includes multiple positive plate and the multiple negative plates being arranged alternately with multiple positive plates, and described positive plate and negative plate are that interval stacking is arranged, and are spaced from each other by barrier film between described positive plate and negative plate.
2. lithium ion battery according to claim 1, it is characterized in that: described barrier film includes the first barrier film and the second barrier film, described battery core assembly is stacked gradually winding by positive plate, the first barrier film, negative plate and the second barrier film and forms, and the outer end of described first barrier film and the second barrier film is fixed by adhesive tape.
3. lithium ion battery according to claim 1, it is characterised in that: described positive plate and negative plate are fixed on the surface of the first barrier film, the second barrier film respectively through the mode of hot compound or concora crush.
4. lithium ion battery according to claim 1, it is characterised in that: described first barrier film and the second barrier film are by hot compoiste adhering together.
5. lithium ion battery according to claim 1, it is characterised in that: the surface of described first barrier film and the second barrier film is coated with polymeric binder.
6. lithium ion battery according to claim 4, it is characterised in that: the thickness of described polymeric binder is 0.5～30 μm.
7. the lithium ion battery according to claim 4 or 5, it is characterized in that: described polymeric binder is polyvinylidene fluoride-co-hexafluoropropene, polyvinylidene fluoride-co-trifluoro-ethylene, polymethyl methacrylate, butyl polyacrylate, polyacrylonitrile, cellulose acetate-butyrate, polyvinylpyrrolidone, poly(ethylene oxide), cyanoethyl pullulan, any one or the two or more mixture in cyanoethyl polyvinylalcohol, cyanethyl cellulose, cyanoethyl sucrose, carboxymethyl cellulose.
8. the manufacture method of a lithium ion battery, it is characterised in that comprise the following steps:
(1) choose the first barrier film, the second barrier film, multiple positive plate and multiple negative plate, positive plate is sequentially arranged on first barrier film being coated with polymeric binder, negative plate is sequentially arranged on the second barrier film being coated with polymeric binder;
(2) the first barrier film of positive plate will be posted and post the second barrier film of negative plate and be fixed respectively through hot pressing;
(3) barrier film of two positive plates after fixing with negative plate is overlapped mutually, is then wound, after its end is fixing by adhesive tape, obtains battery core assembly.
9. the manufacture method of battery according to claim 7, it is characterised in that: the hot pressing pressure described in step (2) is 1000Kg, and hot pressing time is 2s.
10. the manufacture method of battery according to claim 7, it is characterized in that: described positive plate is superimposed upon the top of negative plate, the distance between first positive plate and second positive plate of winding start point is the thickness sum of positive plate width, the thickness of positive plate, the thickness of negative plate, the thickness of the first barrier film and the second barrier film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610170295.6A CN105680100A (en) | 2016-03-23 | 2016-03-23 | Lithium-ion battery and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610170295.6A CN105680100A (en) | 2016-03-23 | 2016-03-23 | Lithium-ion battery and manufacturing method thereof |
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| CN105680100A true CN105680100A (en) | 2016-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610170295.6A Pending CN105680100A (en) | 2016-03-23 | 2016-03-23 | Lithium-ion battery and manufacturing method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106129482A (en) * | 2016-08-17 | 2016-11-16 | 惠州市豪鹏科技有限公司 | A kind of coiled battery structure, the secondary battery including it and battery module |
| CN108336357A (en) * | 2017-12-14 | 2018-07-27 | 合肥国轩高科动力能源有限公司 | A kind of ultralight affluxion body in lithium ion batteries and preparation method thereof |
| CN109004260A (en) * | 2018-07-02 | 2018-12-14 | 浙江衡远新能源科技有限公司 | A kind of preparation method for cutting lamination winding type soft package lithium ion battery battery core |
| CN110911734A (en) * | 2019-12-09 | 2020-03-24 | 天津市捷威动力工业有限公司 | Soft package lithium ion battery |
| CN112968221A (en) * | 2021-01-16 | 2021-06-15 | 珠海冠宇电池股份有限公司 | High-safety lithium ion battery cell, battery and manufacturing method of battery cell |
| CN113571756A (en) * | 2021-07-26 | 2021-10-29 | 珠海冠宇电池股份有限公司 | Battery cell manufacturing method and battery cell |
| CN115275366A (en) * | 2022-08-26 | 2022-11-01 | 楚能新能源股份有限公司 | Production process and equipment for laminated winding battery cell |
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| CN102208679A (en) * | 2011-05-09 | 2011-10-05 | 上海唐一新能源科技有限公司 | Wound continuous laminated square lithium ion power battery |
| CN102576912A (en) * | 2009-10-07 | 2012-07-11 | Sk新技术株式会社 | Electrode assembly for a battery and method for manufacturing same |
| CN102683742A (en) * | 2012-06-12 | 2012-09-19 | 东莞新能源科技有限公司 | Lithium ion battery cell and preparation method thereof |
| CN103746144A (en) * | 2014-01-20 | 2014-04-23 | 深圳市吉阳自动化科技有限公司 | Coiled laminated battery cell and battery |
| CN205985229U (en) * | 2016-03-23 | 2017-02-22 | 合肥国轩高科动力能源有限公司 | Lithium ion battery |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102576912A (en) * | 2009-10-07 | 2012-07-11 | Sk新技术株式会社 | Electrode assembly for a battery and method for manufacturing same |
| CN102208679A (en) * | 2011-05-09 | 2011-10-05 | 上海唐一新能源科技有限公司 | Wound continuous laminated square lithium ion power battery |
| CN102683742A (en) * | 2012-06-12 | 2012-09-19 | 东莞新能源科技有限公司 | Lithium ion battery cell and preparation method thereof |
| CN103746144A (en) * | 2014-01-20 | 2014-04-23 | 深圳市吉阳自动化科技有限公司 | Coiled laminated battery cell and battery |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106129482A (en) * | 2016-08-17 | 2016-11-16 | 惠州市豪鹏科技有限公司 | A kind of coiled battery structure, the secondary battery including it and battery module |
| CN108336357A (en) * | 2017-12-14 | 2018-07-27 | 合肥国轩高科动力能源有限公司 | A kind of ultralight affluxion body in lithium ion batteries and preparation method thereof |
| CN109004260A (en) * | 2018-07-02 | 2018-12-14 | 浙江衡远新能源科技有限公司 | A kind of preparation method for cutting lamination winding type soft package lithium ion battery battery core |
| CN110911734A (en) * | 2019-12-09 | 2020-03-24 | 天津市捷威动力工业有限公司 | Soft package lithium ion battery |
| CN112968221A (en) * | 2021-01-16 | 2021-06-15 | 珠海冠宇电池股份有限公司 | High-safety lithium ion battery cell, battery and manufacturing method of battery cell |
| CN113571756A (en) * | 2021-07-26 | 2021-10-29 | 珠海冠宇电池股份有限公司 | Battery cell manufacturing method and battery cell |
| CN115275366A (en) * | 2022-08-26 | 2022-11-01 | 楚能新能源股份有限公司 | Production process and equipment for laminated winding battery cell |
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Application publication date: 20160615 |