CN1953243B - Electrode segment of lithium ion cell and its manufacture method and lithium ion cell including the same - Google Patents
Electrode segment of lithium ion cell and its manufacture method and lithium ion cell including the same Download PDFInfo
- Publication number
- CN1953243B CN1953243B CN200510100621A CN200510100621A CN1953243B CN 1953243 B CN1953243 B CN 1953243B CN 200510100621 A CN200510100621 A CN 200510100621A CN 200510100621 A CN200510100621 A CN 200510100621A CN 1953243 B CN1953243 B CN 1953243B
- Authority
- CN
- China
- Prior art keywords
- collector
- coiling direction
- folding
- cutting
- lithium
- 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.)
- Expired - Fee Related
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 229910001416 lithium ion Inorganic materials 0.000 title claims description 28
- 238000000034 method Methods 0.000 title claims description 11
- 238000005520 cutting process Methods 0.000 claims abstract description 34
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 26
- 239000011149 active material Substances 0.000 claims description 13
- 230000000977 initiatory effect Effects 0.000 claims description 8
- 230000004888 barrier function Effects 0.000 claims description 3
- 239000003792 electrolyte Substances 0.000 claims description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052744 lithium Inorganic materials 0.000 abstract description 6
- 238000005336 cracking Methods 0.000 abstract 1
- 210000005069 ears Anatomy 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
Landscapes
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention relates to a lithium battery pole piece, which comprises collecting element, polar active layer and polar ears at two surfaces of collecting element. Wherein, said polar ear is formed by cutting part of collecting part not adhered with polar active layer, then coiling it from the coiling initial end of collecting element vertical to the coiling direction and along the coiling direction. The invention increases the thickness of polar ear, to avoid cracking it, reduce the resistance of battery, and improve the discharge property of battery. The invention also provides a method for producing said pole piece.
Description
Technical field
The present invention relates to the lithium ion battery field, relate in particular to a kind of electrodes of lithium-ion batteries and manufacture method thereof and the lithium ion battery that comprises it.
Background technology
After proposing " rocking chair battery " notion (RCB) in 1980, Sony corporation of Japan and Sanyo are respectively at beginning the lithium rechargeable battery practical research in 1985 and 1988, because lithium rechargeable battery has the operating voltage height, specific energy is big, self discharge is little, temperature limit is wide, stable operating voltage, outstanding features such as storage life is long, countries in the world all to lithium rechargeable battery at communication field, portable type electronic product, the application table of aspect such as electric motor car and space flight and aviation illustrates great interest and enthusiasm, and has carried out continuous exploration and improvement at the performance and the manufacturing process of lithium rechargeable battery.
In the last few years, the lithium ion battery manufacturing technology had had very much progress, made that model for example is the capacity of 18650 cylindrical battery, brings up to present 2400mAh from initial 1200mAh.But seem details at some, in fact but affect to a great extent and but still remain on the problem of cell integrated performance and quality to be improved.For example, in the film-making technology of based lithium-ion battery positive plate, existing positive plate all is as anode ear at the super weldering of the end of pole piece one aluminium strip, because lug is by being welded to connect on pole piece, so can produce certain contact internal resistance, thereby increased the internal resistance of battery, reduced the discharge performance of battery; In addition, because the price of aluminium strip is higher, therefore be unfavorable for the reduction of lithium ion battery production cost.
So industry has proposed a kind of scheme that solves the high problem of lithium ion battery production cost, as open day was on September 20th, 2004, publication number is CN1531133A, denomination of invention be the coiled battery unit with and method for winding and to comprise its Chinese patent literature of lithium secondary battery disclosed.This Chinese patent literature has disclosed by a part of electrode current collecting body of cutting and with its upwards folding electrode nipple that forms pole piece, does not therefore need to weld aluminium strip in addition, thereby has reduced the production cost of lithium ion battery.But, therefore still be unfavorable for reducing the internal resistance of cell because aluminium flake is thinner.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of lower electrodes of lithium-ion batteries and manufacture method and the lithium ion battery that comprises it of internal resistance that can make lithium ion battery.
For solving an above-mentioned technical problem, the technical solution adopted in the present invention is: a kind of electrodes of lithium-ion batteries is provided, it comprises collector, attached to two lip-deep polarity active material layer and lugs of collector, this lug is the collector that does not adhere to the polarity active material layer by a cutting part earlier, then that the collector of cutting is folding along vertical coiling direction, the collector that will upwards fold is folding along coiling direction again; This collector is 1-3 time along the folding number of times of coiling direction, and this collector makes progress folded portions greater than half of this collector transverse width along vertical coiling direction.
For solving another above-mentioned technical problem, the technical solution adopted in the present invention is: the manufacture method that a kind of electrodes of lithium-ion batteries is provided, it may further comprise the steps: a cutting part is not earlier adhered to the collector of polarity active material layer, then that the collector of cutting is folding along vertical coiling direction, the collector that will upwards fold is folding along coiling direction again; Maybe that the collector of cutting is folding along coiling direction from collector coiling initiating terminal, again that folding collector is upwards folding along vertical coiling direction; This collector is 1-3 time along the folding number of times of coiling direction, and this collector makes progress folded portions greater than half of this collector transverse width along vertical coiling direction.
For solving another above-mentioned technical problem, the technical solution adopted in the present invention is: a kind of lithium ion battery is provided, it comprises positive/negative plate, is clipped in barrier film, electrolyte and shell between this positive/negative plate, this positive/negative plate comprises collector, attached to two lip-deep polarity active material layer and lugs of collector, this lug is the collector that does not adhere to the polarity active material layer by a cutting part earlier, then that the collector of cutting is folding along vertical coiling direction, the collector that will upwards fold is folding along coiling direction again; This collector is 1-3 time along the folding number of times of coiling direction, and this collector makes progress folded portions greater than half of this collector transverse width along vertical coiling direction.
The invention has the beneficial effects as follows: because the present invention is by a part of collector of cutting and it is folding also along the upwards folding lug that forms pole piece of vertical coiling direction along coiling direction from collector coiling initiating terminal, thereby increased the thickness of lug, make lug be not easy fracture, and help reducing the internal resistance of battery, improved the discharge performance of battery effectively.
Description of drawings
Fig. 1 is an electrodes of lithium-ion batteries schematic diagram provided by the invention.
Embodiment
See also Fig. 1, electrodes of lithium-ion batteries of the present invention comprises collector 1, attached to two lip-deep polarity active material layers 2 of collector 1, do not adhere to the collector zone 3 of polarity active material layer and it is folding and along the upwards folding lug 4 that forms of vertical coiling direction and the fixing gummed paper 5 of lug 4 along coiling direction from collector coiling initiating terminal by cutting a part.
The manufacture method of electrodes of lithium-ion batteries of the present invention may further comprise the steps: 1. cutting part does not adhere to the collector of polarity active material layer; 2. the collector coiling initiating terminal of cutting part is folding along coiling direction; 3. the collector of cutting part is upwards folding along vertical coiling direction.Can first cutting part collector in the said method, then that the collector of cutting is folding along coiling direction from collector coiling initiating terminal, again that folding collector is upwards folding along vertical coiling direction; Also can be earlier that collector is folding along coiling direction from collector coiling initiating terminal, with folding collector cutting, the collector that will fold again edge is perpendicular to folding on the coiling direction then; Also can first cutting part collector, then that the collector of cutting is folding along vertical coiling direction, the collector that will upwards fold folds along coiling direction again.Collector is 1-3 time along the folding number of times of coiling direction in the said method, why along the folding number of times of the rich direction of volume be for 1-3 time because of folding times very little (＜1 time 〉, then the too thin ratio of lug be easier to the fracture and internal resistance bigger, folding times too many (＞3 times), then can cause the blocked up design space of reducing battery of lug, make troubles for the assembling of battery.Collector makes progress folded portions greater than half of collector transverse width, so that lug exposes in the upper end of collector along vertical coiling direction in the said method.
Embodiment 1
Fold 1 time along the collector coiling direction from collector coiling initiating terminal, again folding collector edge is cut perpendicular to coiling direction, cutting width is 3/5 of a collector width, and is then that the collector of cutting is folding along making progress perpendicular to coiling direction, at last will be fixing with gummed paper.
Embodiment 2
Earlier with 3 lug width of collector cutting long (cutting width be collector width 3/5), collector with cutting folds 2 times along the collector coiling direction again, then that folding lug is folding along making progress perpendicular to the collector coiling direction, at last will be fixing with gummed paper.
Embodiment 3
Earlier with 4 lug width of collector cutting long (cutting width be collector width 3/5), again that the collector of cutting is folding along making progress perpendicular to the collector coiling direction, then folding collector is folded 3 times along the collector coiling direction again, at last will be fixing with gummed paper.
Because collector is folding, thereby increase the thickness of lug, made lug be not easy fracture, and help reducing the internal resistance of lithium ion battery, improved the discharge performance of battery effectively.
Lithium ion battery of the present invention comprises the positive/negative plate of being made by above-mentioned electrodes of lithium-ion batteries and is clipped in barrier film between this positive/negative plate, and electrolyte and shell.
Claims (4)
1. electrodes of lithium-ion batteries, it comprises collector, attached to two lip-deep polarity active material layer and lugs of collector, it is characterized in that: this lug is the collector that does not adhere to the polarity active material layer by a cutting part earlier, then that the collector of cutting is folding along vertical coiling direction, the collector that will upwards fold is folding along coiling direction again; This collector is 1-3 time along the folding number of times of coiling direction, and this collector makes progress folded portions greater than half of this collector transverse width along vertical coiling direction.
2. electrodes of lithium-ion batteries as claimed in claim 1 is characterized in that: it also comprises the gummed paper of fixing this lug.
3. the manufacture method of an electrodes of lithium-ion batteries, it is characterized in that may further comprise the steps: a cutting part is not earlier adhered to the collector of polarity active material layer, then that the collector of cutting is folding along vertical coiling direction, the collector that will upwards fold is folding along coiling direction again; Maybe that the collector of cutting is folding along coiling direction from collector coiling initiating terminal, again that folding collector is upwards folding along vertical coiling direction; This collector is 1-3 time along the folding number of times of coiling direction, and this collector makes progress folded portions greater than half of this collector transverse width along vertical coiling direction.
4. lithium ion battery, it comprises positive/negative plate, is clipped in barrier film, electrolyte and shell between this positive/negative plate, it is characterized in that: this positive/negative plate comprises collector, attached to two lip-deep polarity active material layer and lugs of collector, this lug is the collector that does not adhere to the polarity active material layer by a cutting part earlier, then that the collector of cutting is folding along vertical coiling direction, the collector that will upwards fold is folding along coiling direction again; This collector is 1-3 time along the folding number of times of coiling direction, and this collector makes progress folded portions greater than half of this collector transverse width along vertical coiling direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510100621A CN1953243B (en) | 2005-10-20 | 2005-10-20 | Electrode segment of lithium ion cell and its manufacture method and lithium ion cell including the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510100621A CN1953243B (en) | 2005-10-20 | 2005-10-20 | Electrode segment of lithium ion cell and its manufacture method and lithium ion cell including the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1953243A CN1953243A (en) | 2007-04-25 |
| CN1953243B true CN1953243B (en) | 2010-05-12 |
Family
ID=38059436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200510100621A Expired - Fee Related CN1953243B (en) | 2005-10-20 | 2005-10-20 | Electrode segment of lithium ion cell and its manufacture method and lithium ion cell including the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1953243B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101901934B (en) * | 2010-07-22 | 2012-07-04 | 黄祥盛 | Coiled laminate square lithium-ion battery cell and preparation method thereof |
| CN108886170B (en) * | 2016-04-07 | 2021-12-10 | 宁德新能源科技有限公司 | Pole piece, battery cell and energy storage device |
| CN114824433B (en) * | 2022-04-20 | 2025-04-29 | 广东省豪鹏新能源科技有限公司 | A method for manufacturing a lithium battery roll core, a lithium battery roll core, and a lithium battery |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1531133A (en) * | 2003-02-19 | 2004-09-22 | ����Sdi��ʽ���� | Winding battery cell, winding method thereof, and lithium secondary battery including same |
-
2005
- 2005-10-20 CN CN200510100621A patent/CN1953243B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1531133A (en) * | 2003-02-19 | 2004-09-22 | ����Sdi��ʽ���� | Winding battery cell, winding method thereof, and lithium secondary battery including same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1953243A (en) | 2007-04-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208272035U (en) | A kind of stacked secondary cell stacked based on intersection | |
| CN105556734B (en) | Electrochemical cell containing folded electrodes and separator, battery containing the electrochemical cell and method of making the same | |
| CN202662698U (en) | Cylindrical lithium ion battery | |
| CN101640286B (en) | Core of spirally wound lithium battery and spirally wound lithium battery | |
| CN209880750U (en) | Winding type battery cell and lithium ion battery | |
| CN101656330A (en) | Method for manufacturing lithium ion battery cell | |
| CN213546383U (en) | Lithium ion battery roll core | |
| CN219144223U (en) | Electrode assembly, battery cell, battery and electricity utilization device | |
| CN102683752A (en) | Laminated lithium ion power battery and manufacturing method thereof | |
| CN105206865B (en) | A kind of non-tab wound lithium-ion battery cell and its manufacturing method | |
| CN205388994U (en) | A cylindrical power lithium-ion battery | |
| CN101083342B (en) | Winding type flexible packaging lithium ion battery unit, battery and preparation method | |
| CN1953243B (en) | Electrode segment of lithium ion cell and its manufacture method and lithium ion cell including the same | |
| CN201369367Y (en) | Power lithium battery bare cell with double-tab structure | |
| CN2713657Y (en) | Lithium ion power battery | |
| CN112072162B (en) | Parallel winding core structure of cylindrical batteries and its manufacturing process | |
| CN202308205U (en) | Lithium ion battery pole core and lithium ion battery | |
| CN101499541A (en) | Novel winding type lithium ionic cell and manufacturing method thereof | |
| CN212434666U (en) | Anode plate and lithium ion battery | |
| CN201081817Y (en) | Pole plate of coiling lithium cell core | |
| CN1953245A (en) | Electrode segment of lithium ion cell and its manufacture method and lithium ion cell including the same | |
| CN201741765U (en) | Battery cell of power-type lithium ion battery | |
| CN212461774U (en) | Cylindrical battery parallel winding core structure | |
| CN201289883Y (en) | Electric core of coiling type lithium battery and coiling type lithium battery | |
| CN202259555U (en) | Polymer lithium ion battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: DE Ref document number: 1102064 Country of ref document: HK |
|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| REG | Reference to a national code |
Ref country code: HK Ref legal event code: WD Ref document number: 1102064 Country of ref document: HK |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161017 Address after: An Zhen Zhongmu County 451470 Henan city of Zhengzhou Province Liu Zheng Qiao Village Patentee after: ZHENGZHOU BIKE BATTERY CO., LTD. Address before: 518000 Beek Industrial Park, Kwai Chung Town, Longgang District, Guangdong, Shenzhen Patentee before: Shenzhen Bak Battery Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100512 Termination date: 20181020 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |