CN105977543A - Flexible battery - Google Patents
Flexible battery Download PDFInfo
- Publication number
- CN105977543A CN105977543A CN201610524733.4A CN201610524733A CN105977543A CN 105977543 A CN105977543 A CN 105977543A CN 201610524733 A CN201610524733 A CN 201610524733A CN 105977543 A CN105977543 A CN 105977543A
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- CN
- China
- Prior art keywords
- negative
- positive
- battery
- plate
- electrode active
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
-
- 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
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides a flexible battery which comprises a battery cell, wherein the battery cell is formed by winding a positive electrode, a negative electrode and a diaphragm for isolating the positive electrode and the negative electrode; the positive electrode comprises a positive plate not coated with a positive electrode active material; the negative electrode comprises a negative plate not coated with a negative electrode active material; one side surface, facing towards the negative plate, of the diaphragm is coated with the negative electrode active material, and the other side surface, facing towards the positive plate, of the diaphragm is coated with the positive electrode active material. According to the flexible battery, the diaphragm is coated with both the positive electrode active material and the negative electrode active material and is softer than the positive plate and the negative plate, so that the battery cell can be wound and formed more easily, the battery is favorably prepared to be thinner and softer and is suitable for being prepared into a flexible battery, and the flexible battery is applicable to wearable electronic equipment; a situation that the positive electrode active material and the negative electrode active material are broken to fall off is avoided, so that the stability of battery cell performance is improved; furthermore, the passing effect of ions in the battery cell is relatively smooth, the internal resistance of the battery is reduced, and the safety of the battery is improved.
Description
Technical field
The present invention relates to technical field of lithium batteries, particularly relate to the flexible battery that a kind of flexibility is high.
Background technology
Along with the development of science and technology, the thickness of smart mobile phone and wearable electronic does thinner and thinner,
Requirement to the battery for these power electronic equipment is more and more higher.At present, the battery core structure of lithium battery
Become to be usually by being coated with the positive plate of positive electrode active materials, being coated with the negative plate of negative active core-shell material
Form with the membrane winding of isolation both positive and negative polarity, and owing to positive plate and negative plate are firmly a lot of relative to barrier film,
After positive electrode active materials and negative active core-shell material are respectively coated with positive plate and negative plate, virtually increase
Positive plate and the thickness of negative plate and hardness, cause battery core to be difficult to coiling and molding, also increase volume simultaneously
Around thickness, it is unfavorable for reducing battery integral thickness or hardness, causes battery not make flexible soft
Property battery, be unsuitable in wearable electronic equipment use；And, when positive plate or negative plate are rolled up
Qu Shi, the anode material of coating or negative material are easily broken situation about coming off, cause the battery produced
Electric conductivity is deteriorated, and causes battery to scrap, and improves production cost.
Summary of the invention
The present invention is directed to the disappearance of prior art existence, it is provided that a kind of flexible battery, it can greatly drop
Low cell thickness and hardness, be beneficially made battery thinner, softer, be suitable to set at wearable electronic
Standby upper use.
For achieving the above object, the present invention uses such as purgation technical scheme:
A kind of flexible battery, including by positive pole, negative pole and the electricity of the membrane winding of isolation both positive and negative polarity
Core, described positive pole includes the positive plate not coated by positive electrode active materials, and described negative pole includes not born
The negative plate of pole active material coating, described barrier film has negative pole to live towards the side surface-coated of negative plate
Property material, has positive electrode active materials towards the opposite side surface-coated of positive plate.
As a kind of preferred version, the coating thickness of described positive electrode active materials is 50-500 μm, coating
Surface density is 20-400g/m2；The coating thickness of described negative active core-shell material is 50-500 μm, coated side
Density is 20-400g/m2。
As a kind of preferred version, between described positive plate and barrier film, it is provided with positive pole tack coat, described negative
Negative pole tack coat it is provided with between pole piece and barrier film.
As a kind of preferred version, described positive plate is aluminium foil.
As a kind of preferred version, described negative plate is Copper Foil.
As a kind of preferred version, described positive electrode active materials is cobalt acid lithium.
As a kind of preferred version, described negative active core-shell material is graphite.
The present invention compared with prior art has clear advantage and beneficial effect, specifically, passes through
Positive electrode active materials and negative active core-shell material being coated with on barrier film, barrier film is than positive plate and negative plate
More soft, make battery core be easier to coiling and molding, beneficially battery is made thinner, softer, is suitable to
Make flexible battery, be suitable to use in wearable electronic；Meanwhile, by by positive-active material
Material and negative active core-shell material are coated with on barrier film, it is to avoid when positive plate and negative plate bending, positive pole is lived
Property material and negative active core-shell material break situation about coming off, thus improve the stability of battery core performance,
Improve battery quality；And positive electrode active materials and negative active core-shell material are coated on barrier film and can make
Obtain the ion in battery core more smooth by effect, reduce the resistance of inside battery, reduce battery
Thermal discharge in charge and discharge process, improves the safety of battery；It addition, by by positive-active
Material and negative active core-shell material are coated with on barrier film so that it is solid that negative plate and barrier film are more prone to bonding
Fixed, improve the stability of battery structure, add battery life.
By more clearly illustrating the architectural feature of the present invention, technological means and the specific purposes reached thereof
And function, with specific embodiment, the present invention is described in further detail below in conjunction with the accompanying drawings:
Accompanying drawing explanation
Fig. 1 is the battery core schematic cross-section of embodiments of the present invention.
Accompanying drawing identifier declaration:
1, negative plate, 2, barrier film, 3, positive plate,
4, negative active core-shell material, 5, positive electrode active materials.
Detailed description of the invention
As it is shown in figure 1, a kind of flexible battery, including by the barrier film 2 of positive pole, negative pole and isolation both positive and negative polarity
The battery core of winding, described positive pole includes the positive plate 3 not coated by positive electrode active materials, described negative
Pole includes the negative plate 1 not coated by negative active core-shell material, and described barrier film 2 is towards the side table of negative plate 1
Topcoating is covered with negative active core-shell material 4, has positive electrode active materials towards the opposite side surface-coated of positive plate 3
5.The coating thickness of described positive electrode active materials 5 is 50-500 μm, and coated side density is 20-400g/m2；
The coating thickness of described negative active core-shell material 4 is 50-500 μm, and coated side density is 20-400g/m2.Institute
State and between positive plate 3 and barrier film 2, be provided with positive pole tack coat, be provided with negative between described negative plate 1 and barrier film 2
Pole tack coat.
In the present invention, described positive plate 3 is aluminium foil, and described negative plate 1 is Copper Foil, described positive-active
Material 5 is cobalt acid lithium, and described negative active core-shell material 4 is graphite.
In sum, the present invention is by being coated with positive electrode active materials and negative active core-shell material in barrier film
On, barrier film is more soft than positive plate and negative plate, makes battery core be easier to coiling and molding, and being conducive to will
Battery is made thinner, softer, is suitable to make flexible battery, is suitable to use in wearable electronic；
Meanwhile, by positive electrode active materials and negative active core-shell material are coated with on barrier film, it is to avoid positive pole
When sheet and negative plate bending, positive electrode active materials and negative active core-shell material break situation about coming off, thus carry
The high stability of battery core performance, improves battery quality；And positive electrode active materials and negative pole are lived
Property material be coated on barrier film the ion in battery core can be made more smooth by effect, reduce battery
Internal resistance, reduces battery thermal discharge in charge and discharge process, improves the safety of battery；
It addition, by positive electrode active materials and negative active core-shell material are coated with on barrier film so that negative plate
It is more prone to be adhesively fixed with barrier film, improves the stability of battery structure, add battery life.
The above, be only presently preferred embodiments of the present invention, not in order to limit the present invention, therefore
Any amendment, equivalent that above example is made by every technology reality according to the present invention, change
Enter, all still fall within the range of technical solution of the present invention.
Claims (7)
1. a flexible battery, it is characterised in that: include by positive pole, negative pole and isolation both positive and negative polarity every
Film roll around battery core, described positive pole includes the positive plate not coated by positive electrode active materials, described
Negative pole includes the negative plate not coated by negative active core-shell material, and described barrier film is towards the side table of negative plate
Topcoating is covered with negative active core-shell material, has positive electrode active materials towards the opposite side surface-coated of positive plate.
Flexible battery the most according to claim 1, it is characterised in that: described positive electrode active materials
Coating thickness be 50-500 μm, coated side density is 20-400g/m2；Described negative active core-shell material
Coating thickness is 50-500 μm, and coated side density is 20-400g/m2。
Flexible battery the most according to claim 2, it is characterised in that: described positive plate and barrier film
Between be provided with positive pole tack coat, be provided with negative pole tack coat between described negative plate and barrier film.
Flexible battery the most according to claim 1, it is characterised in that: described positive plate is aluminium foil.
Flexible battery the most according to claim 1, it is characterised in that: described negative plate is Copper Foil.
Flexible battery the most according to claim 1 and 2, it is characterised in that: described positive-active material
Material is cobalt acid lithium.
Flexible battery the most according to claim 1 and 2, it is characterised in that: described negative electrode active material
Material is graphite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610524733.4A CN105977543A (en) | 2016-07-05 | 2016-07-05 | Flexible battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610524733.4A CN105977543A (en) | 2016-07-05 | 2016-07-05 | Flexible battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105977543A true CN105977543A (en) | 2016-09-28 |
Family
ID=56953689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610524733.4A Pending CN105977543A (en) | 2016-07-05 | 2016-07-05 | Flexible battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105977543A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106410266A (en) * | 2016-10-28 | 2017-02-15 | 珠海市鹏辉电池有限公司 | Ultra-thin lithium ion battery and preparation method thereof |
| CN108232110A (en) * | 2017-02-21 | 2018-06-29 | 深圳市格瑞普电池有限公司 | Laminated lithium ion battery and its pole piece |
| CN109638357A (en) * | 2018-11-23 | 2019-04-16 | 浙江衡远新能源科技有限公司 | A kind of integrated preparation method of electrodes of lithium-ion batteries/diaphragm |
| CN109804486A (en) * | 2016-10-11 | 2019-05-24 | 世倍特集团有限责任公司 | Method for producing a lithium-ion galvanic cell and lithium-ion galvanic cell |
| CN111208136A (en) * | 2020-01-16 | 2020-05-29 | 东莞维科电池有限公司 | Method and device for on-line checking orientation of coating diaphragm |
Citations (6)
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| JPH0521069A (en) * | 1991-07-12 | 1993-01-29 | Sanyo Electric Co Ltd | Nonaqueous electrolytic battery and electrode therefor |
| CN102088086A (en) * | 2010-12-30 | 2011-06-08 | 奇瑞汽车股份有限公司 | High-voltage lithium ion battery anode, lithium ion battery using same and preparation method of high-voltage lithium ion battery anode |
| CN102460772A (en) * | 2009-05-26 | 2012-05-16 | 奥普图多特公司 | Battery utilizing electrodes coated directly on nanoporous separators |
| CN103700863A (en) * | 2013-12-10 | 2014-04-02 | 中山市电赢科技有限公司 | High-multiplying-power flexibly-packaged lithium ion secondary battery and preparation method thereof |
| CN104577191A (en) * | 2014-12-30 | 2015-04-29 | 东莞市西特新能源科技有限公司 | Polymer lithium-ion battery and preparation method thereof |
| CN205810978U (en) * | 2016-07-05 | 2016-12-14 | 东莞市卓高电子科技有限公司 | Flexible battery |
-
2016
- 2016-07-05 CN CN201610524733.4A patent/CN105977543A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0521069A (en) * | 1991-07-12 | 1993-01-29 | Sanyo Electric Co Ltd | Nonaqueous electrolytic battery and electrode therefor |
| CN102460772A (en) * | 2009-05-26 | 2012-05-16 | 奥普图多特公司 | Battery utilizing electrodes coated directly on nanoporous separators |
| CN102460776A (en) * | 2009-05-26 | 2012-05-16 | 奥普图多特公司 | Battery using anode coating directly on nanoporous separator |
| CN102088086A (en) * | 2010-12-30 | 2011-06-08 | 奇瑞汽车股份有限公司 | High-voltage lithium ion battery anode, lithium ion battery using same and preparation method of high-voltage lithium ion battery anode |
| CN103700863A (en) * | 2013-12-10 | 2014-04-02 | 中山市电赢科技有限公司 | High-multiplying-power flexibly-packaged lithium ion secondary battery and preparation method thereof |
| CN104577191A (en) * | 2014-12-30 | 2015-04-29 | 东莞市西特新能源科技有限公司 | Polymer lithium-ion battery and preparation method thereof |
| CN205810978U (en) * | 2016-07-05 | 2016-12-14 | 东莞市卓高电子科技有限公司 | Flexible battery |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109804486A (en) * | 2016-10-11 | 2019-05-24 | 世倍特集团有限责任公司 | Method for producing a lithium-ion galvanic cell and lithium-ion galvanic cell |
| CN109804486B (en) * | 2016-10-11 | 2022-04-15 | 世倍特集团有限责任公司 | Method for producing a lithium-ion galvanic cell and lithium-ion galvanic cell |
| CN106410266A (en) * | 2016-10-28 | 2017-02-15 | 珠海市鹏辉电池有限公司 | Ultra-thin lithium ion battery and preparation method thereof |
| CN108232110A (en) * | 2017-02-21 | 2018-06-29 | 深圳市格瑞普电池有限公司 | Laminated lithium ion battery and its pole piece |
| CN109638357A (en) * | 2018-11-23 | 2019-04-16 | 浙江衡远新能源科技有限公司 | A kind of integrated preparation method of electrodes of lithium-ion batteries/diaphragm |
| CN111208136A (en) * | 2020-01-16 | 2020-05-29 | 东莞维科电池有限公司 | Method and device for on-line checking orientation of coating diaphragm |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160928 |