CN1610168A - Electric core structure of lithium battery and producing method thereof - Google Patents
Electric core structure of lithium battery and producing method thereof Download PDFInfo
- Publication number
- CN1610168A CN1610168A CNA200410052454XA CN200410052454A CN1610168A CN 1610168 A CN1610168 A CN 1610168A CN A200410052454X A CNA200410052454X A CN A200410052454XA CN 200410052454 A CN200410052454 A CN 200410052454A CN 1610168 A CN1610168 A CN 1610168A
- Authority
- CN
- China
- Prior art keywords
- positive
- pole piece
- lithium battery
- negative
- barrier film
- 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.)
- Granted
Links
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000004888 barrier function Effects 0.000 claims description 19
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 239000003792 electrolyte Substances 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical group [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005213 imbibition Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- 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
Abstract
The present invention is the structure and making process of lithium cell core. The lithium cell core includes positive pole plate, negative pole plate and diaphragm in between, and they are in the same length and width and folded into zigzag. The positive pole plates and the negative pole plates are interpenetrated and arranged alternately in the angle of 90 deg. The present invention has homogeneous electrolyte distribution, fast electrolyte adsorbing speed and may be used in producing high quality lithium cell.
Description
Technical field
The present invention relates to a kind of core strueture and manufacture method thereof of lithium battery, refer in particular to folded system structure between both positive and negative polarity and folded system method in a kind of lithium battery electric core.
Background technology
Because the advantage of all many-sides such as capacity and discharge time, present lithium battery mostly is lithium ion/lithium polymer battery, and along with the development of lithium-ion electric pool technology, its cost performance improves constantly, cause it by all trades and professions extensive use, and the requirement of all trades and professions constantly promotes lithium battery and develops to big capacity, and big capacity just requires lithium battery to have bigger storage volume, and this has caused the increase of thickness.For lithium battery, its basic structure is for constituting battery by the electric core of mutual superposition, and battery battery core is made of overlapped pole piece, and it is promptly stacked that being combined as substantially of pole piece just reaches the negative plate cyclic overlap, neither is provided with insulation diaphragm between the pole piece of the same sex; The limit of each pole piece is provided with lug, and the lug of same polarity is overlapped, ties up after the welding and outer lug welding again; The structure of pole piece then comprises substrate and is coated in polarity dope layer on the substrate surface, in order to increase the capacity of battery, substrate and on coating all very thin.So positive plate, diaphragm, negative plate circulation are added to after the number of plies of regulation, through the enlacement packaging of tying up welding, pole piece of lug, the outer lug of burn-oning is again just made electric core.Because pole piece is very thin, cause the combination after the stack very to throw pine, be difficult to tie up and tie up back two ends perk, neither attractive in appearancely influenced integral thickness again, and caused difficulty to next procedure; Separate between the homopolarity pole piece simultaneously, the course of processing of pole piece wastes time and energy.Therefore " monolithic " type takeup type electricity core on stacked basis, occurred, be about to after overlapping three layers of positive pole, barrier film, negative pole and be wound to design load around the volume core together, but the winding method wasting space be more, lug draw also comparatively complexity.It is contemplated that the collapsible electric core of a kind of " monolithic " type so?
Summary of the invention
Problem to be solved by this invention is to propose folded system structure and the folded system method between both positive and negative polarity in a kind of lithium battery electric core, to realize the collapsible core strueture of " monolithic " type.
Designed a kind of core strueture of lithium battery according to the problems referred to above, comprise positive plate, negative plate and the barrier film between both positive and negative polarity, described strip positive plate, negative plate and barrier film each one, pole piece and barrier film are continuous M or W type after folding, positive and negative electrode alternates one by one mutually and is nested with and circulates by positive and negative, positive and negative mode.Wherein, the width of positive and negative plate is identical, length is also identical, and the mutual angle between the strip positive and negative plate is 90 °.
Designed a kind of manufacture method of electric core structure of lithium battery according to the problems referred to above, its step is as follows:
Get earlier strip positive plate, negative plate and barrier film each one, and positive and negative plate is isolated with barrier film;
Again an end of positive and negative plate is formed 90 ° of vertical angles between overlapped and two pole pieces mutually;
Then, after the underlapped part of pole piece that will be in the below upwards turns down 180 ° and the fully overlapping lap that covers in position different in nature pole piece thereon, the underlapped part of different in nature pole piece that will now be in the below more upwards turns down 180 ° and the overlapping fully lap that covers in position pole piece thereon, so move in circles, finish until the strip pole piece of setting is folding.When folding, be in that overlapped sideline is that broken line upwards turns down between the underlapped above inferior pole piece of part of the pole piece of below.
The present invention need not punching in producing, and the production efficiency height is particularly useful for blue tooth and makes; Interlayer electricity liquid is evenly distributed in the core strueture, phenomenons such as the voltage platform that causes because of electric liquid skewness is low, sinker, cyclicity difference have been reduced, and heat evenly distributes and is easy to heat radiation between the layer, can reduce because of external short circuit, overshoot, cross the phenomenons such as making the too high aerogenesis that causes of electric in-core local temperature, burning, blast of putting, puncture; Because core strueture imbibition of the present invention is fast, and when bleeding, electric in-core portion gas evenly can be extracted out, improved production efficiency and product quality; Draw no toe of weld because of lug by the pole piece individual layer, reduced and repaiied the toe of weld operation, the toe of weld top can not occur and wear the phenomenon of leakage that barrier film causes.
Description of drawings
Accompanying drawing 1 is the anodal and cathode pole piece shape schematic diagram of the present invention; Accompanying drawing 2～4th, lamination process schematic diagram of the present invention; Accompanying drawing 5 is the compression effectiveness schematic diagrames after the present invention finishes lamination; Accompanying drawing 6 is drawing effect schematic diagrames of accompanying drawing 5.
Embodiment
Core strueture disclosed by the invention and manufacture method thereof, the method that is a kind of efficient quick of proposing from electric core at liquid flexible packing or polymer lithium, adapts with suitability for industrialized production, try hard to the superimposed sheets structure after traditional punching is combined with the volume cored structure, in actual production, simplify the speed that production technology is accelerated continuous productive process, improve the packing and the seal quality of the electric core that is shaped.
Below in conjunction with accompanying drawing embodiments of the present invention are described in further detail.
The present invention has eliminated the punching operation of traditional stack pole piece type lithium battery indispensability, adopt the strip pole piece of volume core pattern lithium battery type, so need with positive plate 1, negative plate 2 and be clipped in each one in barrier film between the positive/negative plate, only need leave anode ear trough 11 or negative electrode lug trough 21 at an end of strip pole piece.
Add man-hour, can cut the positive and negative plate of specific width and length according to the designing requirement of battery, barrier film is the diaphragm that positive and negative plate is isolated mutually fully, and this diaphragm can coat a pole piece, perhaps diaphragm is made the diaphragm bag of an end opening, a pole piece places bag fully.The width of barrier film is by 2.05～2.1 times of calculating that are the battery design width, and length can be decided according to the length that pole piece is reserved behind the lug, and as adopting the diaphragm bag mode, the deburring that needs to cut edge after the other end heat-sealing with barrier film is handled; After finishing the barrier film making, an optional both positive and negative polarity wherein utmost point coats or puts into diaphragm bag with barrier film; When carrying out folding operation, one side can select in the both positive and negative polarity arbitrary pole piece be flanging, it is folding to desired thickness along X-axis and Y-axis that another side is a conduplication side.Now concrete folding process is described below:
An end of positive and negative plate of having finished each other isolation processing is overlapped and form 90 ° of vertical angles between two mutually, be similar to crossing X-axis and Y-axis; After the underlapped part of pole piece that will be in the below upwards turns down 180 ° and the fully overlapping lap that covers in position different in nature pole piece thereon, the underlapped part of different in nature pole piece that will now be in the below more upwards turns down 180 ° and the overlapping fully lap that covers in position pole piece thereon, so move in circles, finish until the strip pole piece of setting is folding, draw the laggard row of lug at the different directions of lug trough then and irritate liquid, sealing, then finished the making of electric core.During turnover, be in that overlapped sideline is that broken line upwards turns down between the underlapped above inferior pole piece of part of pole piece of below.The electric core of making can connection in series-parallel in unified system, finishes final battery manufacturing.
Claims (7)
1, a kind of core strueture of lithium battery comprises positive plate (1), negative plate (2) and the barrier film between both positive and negative polarity, it is characterized in that
Strip positive plate, negative plate and barrier film each one, pole piece and barrier film are continuous M or W type after folding, positive and negative electrode alternates one by one mutually and is nested with and circulates by positive and negative, positive and negative mode.
2, the core strueture of lithium battery according to claim 1 is characterized in that barrier film is the diaphragm that positive and negative plate is isolated mutually fully.
3, the core strueture of lithium battery according to claim 2 is characterized in that diaphragm can coat a pole piece, perhaps diaphragm is made the diaphragm bag of an end opening, and a pole piece places bag fully.
4, the core strueture of lithium battery according to claim 3 is characterized in that the mutual angle between positive and negative plate is 90 °.
5, the core strueture of lithium battery according to claim 4 is characterized in that a end at the strip positive and negative plate leaves lug and draws trough (11,21).
6, a kind of manufacture method of electric core structure of lithium battery is characterized in that
Get strip positive plate, negative plate and barrier film each one, and positive and negative plate is isolated with barrier film;
One end of positive and negative plate is overlapped and mutually form 90 ° of vertical angles between two;
After the underlapped part of pole piece that will be in the below upwards turns down 180 ° and the fully overlapping lap that covers in position different in nature pole piece thereon, the underlapped part of different in nature pole piece that will now be in the below more upwards turns down 180 ° and the overlapping fully lap that covers in position pole piece thereon, so move in circles, finish until the strip pole piece of setting is folding.
7, the manufacture method of electric core structure of lithium battery according to claim 4 is characterized in that being in that overlapped sideline is that broken line upwards turns down between the underlapped above inferior pole piece of part of the pole piece of below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410052454XA CN1297033C (en) | 2004-11-25 | 2004-11-25 | Electric core structure of lithium battery and producing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410052454XA CN1297033C (en) | 2004-11-25 | 2004-11-25 | Electric core structure of lithium battery and producing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1610168A true CN1610168A (en) | 2005-04-27 |
| CN1297033C CN1297033C (en) | 2007-01-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200410052454XA Active CN1297033C (en) | 2004-11-25 | 2004-11-25 | Electric core structure of lithium battery and producing method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN1297033C (en) |
Cited By (16)
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| WO2008074239A1 (en) * | 2006-12-19 | 2008-06-26 | Byd Company Limited | Stacked-type lithium ion battery |
| US8007935B2 (en) | 2006-10-30 | 2011-08-30 | Byd Co., Ltd. | Plate assembly, core and lithium ion battery |
| CN102299268A (en) * | 2010-06-23 | 2011-12-28 | 深圳市比克电池有限公司 | Lithium ion battery cover board and battery |
| US8092936B2 (en) | 2007-12-25 | 2012-01-10 | Byd Co. Ltd. | Electrochemical cell having a coiled core |
| US8178230B2 (en) | 2007-12-18 | 2012-05-15 | Byd Co., Ltd. | Battery pack |
| US8178225B2 (en) | 2007-11-29 | 2012-05-15 | Byd Co., Ltd. | Battery and preparation method thereof |
| US8193770B2 (en) | 2007-12-25 | 2012-06-05 | BYD Co. Ltd | Battery system for a vehicle having an over-current/over-temperature protective feature |
| US8276695B2 (en) | 2007-12-25 | 2012-10-02 | Byd Co. Ltd. | Battery electrode sheet |
| US8420254B2 (en) | 2007-12-25 | 2013-04-16 | Byd Co. Ltd. | End cover assembly for an electrochemical cell |
| WO2015100414A1 (en) * | 2013-12-27 | 2015-07-02 | Arizona Board Of Regents On Behalf Of Arizona State University | Deformable origami batteries |
| CN109301348A (en) * | 2017-07-24 | 2019-02-01 | 丰田自动车株式会社 | The manufacturing method of layered type electrode body |
| US10390698B2 (en) | 2016-06-16 | 2019-08-27 | Arizona Board Of Regents On Behalf Of Arizona State University | Conductive and stretchable polymer composite |
| US10418664B2 (en) | 2014-09-26 | 2019-09-17 | Arizona Board Of Regents On Behalf Of Arizona State University | Stretchable batteries |
| US10502991B2 (en) | 2015-02-05 | 2019-12-10 | The Arizona Board Of Regents On Behalf Of Arizona State University | Origami displays and methods for their manufacture |
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| JP3428452B2 (en) * | 1998-08-27 | 2003-07-22 | 三菱電機株式会社 | Battery with spiral electrode body and method of manufacturing the same |
| CN2569353Y (en) * | 2002-09-06 | 2003-08-27 | 华南理工大学 | Lithium ion power accumulator core |
| CN2645251Y (en) * | 2003-09-28 | 2004-09-29 | 惠州Tcl金能电池有限公司 | Coiled lithium battery electric core |
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- 2004-11-25 CN CNB200410052454XA patent/CN1297033C/en active Active
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| US8007935B2 (en) | 2006-10-30 | 2011-08-30 | Byd Co., Ltd. | Plate assembly, core and lithium ion battery |
| WO2008074239A1 (en) * | 2006-12-19 | 2008-06-26 | Byd Company Limited | Stacked-type lithium ion battery |
| US8178225B2 (en) | 2007-11-29 | 2012-05-15 | Byd Co., Ltd. | Battery and preparation method thereof |
| US8178230B2 (en) | 2007-12-18 | 2012-05-15 | Byd Co., Ltd. | Battery pack |
| US8420254B2 (en) | 2007-12-25 | 2013-04-16 | Byd Co. Ltd. | End cover assembly for an electrochemical cell |
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| US8193770B2 (en) | 2007-12-25 | 2012-06-05 | BYD Co. Ltd | Battery system for a vehicle having an over-current/over-temperature protective feature |
| US8202644B2 (en) | 2007-12-25 | 2012-06-19 | Byd Co. Ltd. | Protection cover for an end cap assembly of a battery cell |
| US8276695B2 (en) | 2007-12-25 | 2012-10-02 | Byd Co. Ltd. | Battery electrode sheet |
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| US8092936B2 (en) | 2007-12-25 | 2012-01-10 | Byd Co. Ltd. | Electrochemical cell having a coiled core |
| US8865335B2 (en) | 2007-12-25 | 2014-10-21 | Byd Co. Ltd. | Electrochemical storage cell |
| US10147930B2 (en) | 2007-12-25 | 2018-12-04 | Shenzhen Byd Auto R&D Company Limited | Construction of electrochemical storage cell with conductive block |
| US9741996B2 (en) | 2007-12-25 | 2017-08-22 | Byd Co. Ltd. | Construction of electrochemical storage cell |
| CN102299268B (en) * | 2010-06-23 | 2016-04-27 | 深圳市比克电池有限公司 | A kind of lithium ion battery cover board and battery |
| CN102299268A (en) * | 2010-06-23 | 2011-12-28 | 深圳市比克电池有限公司 | Lithium ion battery cover board and battery |
| WO2015100414A1 (en) * | 2013-12-27 | 2015-07-02 | Arizona Board Of Regents On Behalf Of Arizona State University | Deformable origami batteries |
| US10153519B2 (en) | 2013-12-27 | 2018-12-11 | Arizona Board Of Regents On Behalf Of Arizona State University | Deformable origami batteries |
| US10418664B2 (en) | 2014-09-26 | 2019-09-17 | Arizona Board Of Regents On Behalf Of Arizona State University | Stretchable batteries |
| US10660200B2 (en) | 2015-01-02 | 2020-05-19 | Arizona Board Of Regents On Behalf Of Arizona State University | Archimedean spiral design for deformable electronics |
| US10502991B2 (en) | 2015-02-05 | 2019-12-10 | The Arizona Board Of Regents On Behalf Of Arizona State University | Origami displays and methods for their manufacture |
| US10390698B2 (en) | 2016-06-16 | 2019-08-27 | Arizona Board Of Regents On Behalf Of Arizona State University | Conductive and stretchable polymer composite |
| CN109301348A (en) * | 2017-07-24 | 2019-02-01 | 丰田自动车株式会社 | The manufacturing method of layered type electrode body |
| CN114122313A (en) * | 2021-10-25 | 2022-03-01 | 西北工业大学 | Ultrathin organic composite power supply and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1297033C (en) | 2007-01-24 |
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Address after: 516006 63 District, Hui Tai Industrial Park, Zhongkai hi tech Zone, Huizhou, Guangdong Patentee after: Huizhou Yiwei Energy Battery Co.,Ltd. Address before: 516006 63 District, Hui Tai Industrial Park, Zhongkai hi tech Zone, Huizhou, Guangdong Patentee before: HUIZHOU JINNENG BATTERY Co.,Ltd. |
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Effective date of registration: 20230918 Address after: 516000 No. 38, Huifeng 7th Road, Zhongkai High-tech Zone, Huizhou City, Guangdong Province Patentee after: EVE ENERGY Co.,Ltd. Address before: 516006 63 District, Hui Tai Industrial Park, Zhongkai hi tech Zone, Huizhou, Guangdong Patentee before: Huizhou Yiwei Energy Battery Co.,Ltd. |