CN204067488U - A kind of micropore aluminium foil being applicable to anode current collector of lithium ion battery - Google Patents
A kind of micropore aluminium foil being applicable to anode current collector of lithium ion battery Download PDFInfo
- Publication number
- CN204067488U CN204067488U CN201420370055.7U CN201420370055U CN204067488U CN 204067488 U CN204067488 U CN 204067488U CN 201420370055 U CN201420370055 U CN 201420370055U CN 204067488 U CN204067488 U CN 204067488U
- Authority
- CN
- China
- Prior art keywords
- aluminium foil
- battery
- lithium ion
- ion battery
- current collector
- 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 - Lifetime
Links
- 239000005030 aluminium foil Substances 0.000 title claims abstract description 46
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 24
- 239000003792 electrolyte Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 abstract description 4
- 230000010287 polarization Effects 0.000 abstract description 3
- 239000011149 active material Substances 0.000 abstract description 2
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 230000008595 infiltration Effects 0.000 abstract description 2
- 238000001764 infiltration Methods 0.000 abstract description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 239000011888 foil Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000006256 anode slurry Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000006257 cathode slurry Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000012956 testing procedure 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
- Cell Electrode Carriers And Collectors (AREA)
Abstract
Be applicable to a micropore aluminium foil for anode current collector of lithium ion battery, relate to the aluminium foil technical field of lithium ion battery.Solve in existing lithium ion battery and infiltrate as the aluminium foil of anode current collector of lithium ion battery and protect liquid weak effect, the internal resistance of cell is large, and battery discharge multiplying power low technical is not enough, includes aluminium foil body; It is characterized in that: on described aluminium foil body, every sq is uniformly distributed 1 ~ 9 through hole, the aluminium foil body thickness that each through-hole diameter is less than 2 times.Of the present utility model as anode current collector of lithium ion battery, aluminium foil body offers through hole, owing to providing more many spaces to positive electrode coating in unit volume, active material ratio in the battery will increase, the capacity of battery will increase, and meets the needs that market improves constantly battery capacity.In addition, aluminium foil body offers through hole and improves aluminium foil structure, increase the contact area of aluminium foil and positive electrode, improve the infiltration of electrolyte in pole piece and protect liquid effect, shorten electrolyte infiltrating time, reduce the polarization phenomena of battery in charge and discharge process, reduce the internal resistance of cell, improve battery discharge multiplying power, improve cycle performance of battery.
Description
Technical field
The utility model relates to the aluminium foil technical field of lithium ion battery.
Background technology
Early stage lithium ion battery many employings rolling aluminum foil is as plus plate current-collecting body, but along with the development of battery production technology and the raising of electrolytic aluminum foil performance, current domestic and international most of lithium ion battery producer many employings electrolytic aluminum foil makes battery plus plate current-collecting body.Aluminium foil had both served as the carrier of positive active material in the battery, served as again the collection of positive electrode electronic stream and transmission body.In lithium ion battery production process, by current collector aluminum foil surface-coated positive electrode, in process of production roll-in pole piece, reduce pole piece thickness, improve unit volume positive electrode quality; Along with greatly developing of 3C electronic product, also improving constantly the requirement of battery, the volumetric specific energy improving battery becomes the continuous demand in market.
Summary of the invention
In sum, the purpose of this utility model is to solve in existing lithium ion battery and infiltrates as the aluminium foil of anode current collector of lithium ion battery and protect liquid weak effect, the internal resistance of cell is large, and battery discharge multiplying power low technical is not enough, and proposes a kind of micropore aluminium foil being applicable to anode current collector of lithium ion battery.
For solving the technical problem that the utility model proposes, the technical scheme of employing is: a kind of micropore aluminium foil being applicable to anode current collector of lithium ion battery, includes aluminium foil body; It is characterized in that: on described aluminium foil body, every sq is uniformly distributed 1 ~ 9 through hole, the aluminium foil body thickness that each through-hole diameter is less than 2 times.
Preferred technical scheme is: described aluminium foil body thickness is 16um, and through-hole diameter is 16um, pitch of holes is 5mm.
The beneficial effects of the utility model are: of the present utility model as anode current collector of lithium ion battery, aluminium foil body offers through hole, owing to providing more many spaces to positive electrode coating in unit volume, active material ratio in the battery will increase, the capacity of battery will increase, and meets the needs that market improves constantly battery capacity.In addition, aluminium foil body offers through hole and improves aluminium foil structure, increase the contact area of aluminium foil and positive electrode, improve the infiltration of electrolyte in pole piece and protect liquid effect, shorten electrolyte infiltrating time, reduce the polarization phenomena of battery in charge and discharge process, reduce the internal resistance of cell, improve battery discharge multiplying power, improve cycle performance of battery.Increase the carrier space of collector, improve the quality of positive electrode in unit volume, increase battery capacity in unit volume.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing and preferred specific embodiment, structure of the present utility model is further described.
With reference to shown in Fig. 1, the utility model includes aluminium foil body 1, every sq is uniformly distributed 1 ~ 9 through hole 2 to described aluminium foil body 1, aluminium foil body 1 thickness that each through hole 2 diameter is less than 2 times.
Be 16um by described aluminium foil body thickness, through-hole diameter is 16um, pitch of holes is that the utility model of 5mm is as anode current collector of lithium ion battery, after making lithium ion battery, battery correlated performance is tested, when the lithium ion battery finding to use micropore aluminium foil to make makes same size resultant battery than non-micropore aluminium foil, internal resistance can reduce by 5% ~ 10%, and discharge-rate and cycle performance of battery improve and raising.
The utility model testing procedure is:
1) certain lithium ion battery factory tested recipe preparation anode and cathode slurry is used.
2) get 2 rolls of aluminum foil, a volume is conventional aluminium foil, and another volume is micropore aluminium foil, it is wide that its specification is 300mm, 0.016mm thickness, be coated on above above two kinds of aluminium foils by one side surface density 2.12g/dm2 distribution by above-mentioned anode sizing agent 3, its two-sided surface density is 4.24g/dm2.
3) getting width is 300mm, and thickness is the Copper Foil of 0.009mm, and cathode size in above-mentioned (1) is coated on Copper Foil two sides by one side surface density 0.98g/dm2 distribution, and its two-sided surface density is 1.96g/dm2.
4) above-mentioned two class aluminium foil positive plates are made 6pcs pole piece respectively by following requirement, be numbered 1 ~ 12# (wherein 1 ~ 6# is conventional aluminium foil, and 7 ~ 12# is micropore aluminium foil), battery size is 4057117-2800mAh.
5) after numbering, positive/negative plate is by roll forming machine, is undertaken rolling film, electronic scale is weighed, record data are as follows by certain technique nominal thickness:
Positive plate:
Negative plate:
6) numbering pole piece is made battery, its primary data is as follows:
As can be seen from data, after battery made by micropore aluminium foil its first discharging efficiency be 82.6%, improve 1.8% than conventional aluminium foil battery; Capacity plays as 142.34mAh/g, and improve 5.49mAh/g, being converted into volumetric specific energy then increases about 1.5WH/L, and internal resistance of cell mean value is reduced to 21.27m Ω by 22.48m Ω, and internal resistance reduces by 5.38%.
8) get its multiplying power discharging property of 4pcs battery testing, its data are as follows:
9) get and be numbered 5,6,7, No. 8 batteries and carry out charge and discharge circulation life test according to 1200mA electric current, its data are as follows:
Comprehensive above data, as the collector of based lithium-ion battery positive plate after aluminium foil punching, make lithium ion battery and not only can improve battery volume and capacity ratio, shorten the infiltrating time of electrolyte in pole piece, reduce the polarization phenomena of battery in charge and discharge process, reduce the internal resistance of cell, improve battery discharge multiplying power, due to the existence of micropore, improve cycle performance of battery.
Claims (2)
1. be applicable to a micropore aluminium foil for anode current collector of lithium ion battery, include aluminium foil body; It is characterized in that: on described aluminium foil body, every sq is uniformly distributed 1 ~ 9 through hole, the aluminium foil body thickness that each through-hole diameter is less than 2 times.
2. a kind of micropore aluminium foil being applicable to anode current collector of lithium ion battery according to claim 1, it is characterized in that: described aluminium foil body thickness is 16um, through-hole diameter is 16um, pitch of holes is 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420370055.7U CN204067488U (en) | 2014-07-04 | 2014-07-04 | A kind of micropore aluminium foil being applicable to anode current collector of lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420370055.7U CN204067488U (en) | 2014-07-04 | 2014-07-04 | A kind of micropore aluminium foil being applicable to anode current collector of lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204067488U true CN204067488U (en) | 2014-12-31 |
Family
ID=52208940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420370055.7U Expired - Lifetime CN204067488U (en) | 2014-07-04 | 2014-07-04 | A kind of micropore aluminium foil being applicable to anode current collector of lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204067488U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107394209A (en) * | 2017-07-07 | 2017-11-24 | 郑州比克电池有限公司 | A kind of based lithium-ion battery positive plate and its manufacture method |
| CN107615550A (en) * | 2016-05-06 | 2018-01-19 | 深圳先进技术研究院 | A kind of secondary cell and preparation method thereof |
| CN108220696A (en) * | 2018-01-09 | 2018-06-29 | 山西沃特海默新材料科技股份有限公司 | A kind of preparation method of lithium ion battery aluminium foil, micropore aluminium foil and micropore aluminium foil |
| CN113764839A (en) * | 2021-08-17 | 2021-12-07 | 珠海冠宇电池股份有限公司 | Pole piece and lithium battery |
| CN115799443A (en) * | 2023-02-06 | 2023-03-14 | 中自环保科技股份有限公司 | Sodium ion battery microporous aluminum foil electrode and preparation method thereof |
-
2014
- 2014-07-04 CN CN201420370055.7U patent/CN204067488U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107615550A (en) * | 2016-05-06 | 2018-01-19 | 深圳先进技术研究院 | A kind of secondary cell and preparation method thereof |
| CN107615550B (en) * | 2016-05-06 | 2020-10-27 | 深圳中科瑞能实业有限公司 | Secondary battery and preparation method thereof |
| CN107394209A (en) * | 2017-07-07 | 2017-11-24 | 郑州比克电池有限公司 | A kind of based lithium-ion battery positive plate and its manufacture method |
| CN108220696A (en) * | 2018-01-09 | 2018-06-29 | 山西沃特海默新材料科技股份有限公司 | A kind of preparation method of lithium ion battery aluminium foil, micropore aluminium foil and micropore aluminium foil |
| CN113764839A (en) * | 2021-08-17 | 2021-12-07 | 珠海冠宇电池股份有限公司 | Pole piece and lithium battery |
| CN115799443A (en) * | 2023-02-06 | 2023-03-14 | 中自环保科技股份有限公司 | Sodium ion battery microporous aluminum foil electrode and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108281610B (en) | Lithium ion battery with composite positive pole piece | |
| CN204067488U (en) | A kind of micropore aluminium foil being applicable to anode current collector of lithium ion battery | |
| CN105742613A (en) | Negative pole piece and lithium-ion battery | |
| WO2017101214A1 (en) | Lithium ion capacitor and formation method therefor | |
| CN103117374B (en) | Anode pole piece of lithium rechargeable battery and preparation method thereof | |
| CN104966822A (en) | Multilayer coated lithium titanate cathode material of lithium ion battery and preparation method of multilayer coated lithium titanate cathode material | |
| CN104037458B (en) | Manufacturing method of lithium ion energy storage device | |
| CN101227015A (en) | Cylinder type lithium ion battery with high power rate and high safety performance | |
| CN104882611B (en) | A kind of Anodic electrode, energy storage device comprising the anode electrode and preparation method thereof | |
| CN107394209A (en) | A kind of based lithium-ion battery positive plate and its manufacture method | |
| CN106602069A (en) | Lithium ion battery positive electrode material, positive electrode and lithium ion battery | |
| CN112825350B (en) | Pre-lithiation negative pole piece, preparation method thereof and lithium secondary battery | |
| CN102779981B (en) | Preparation method of negative electrode plate of nickel-metal hydride battery | |
| CN104835967A (en) | Electrode for battery and preparation method thereof | |
| CN112909262A (en) | Silicon cathode and preparation method and application thereof | |
| CN103367700B (en) | Lithium ion secondary battery cathode and lithium rechargeable battery | |
| CN102290566A (en) | Lithium battery anode preparing method and lithium battery | |
| CN109888171A (en) | The processing method of battery anode slice | |
| CN204558584U (en) | A kind of electrode for cell | |
| CN103441283A (en) | Lithium ion battery negative electrode current collector structure and battery containing the same | |
| CN106876714A (en) | A kind of lithium ion battery for automobile starting/stopping system | |
| CN207183416U (en) | A kind of three-dimensional lithium ion battery | |
| CN105140497A (en) | Application of graphene/copper composite electrode material | |
| CN103247818A (en) | Flexible-packaging laminated lithium iron phosphate cell with high specific energy and manufacturing method thereof | |
| CN105633353A (en) | Preparation method of positive pole piece of high-rate lithium-ion battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160107 Address after: 518000 Guangdong city of Shenzhen province Nanshan District Virtual University Park Keyuan Road, building 605 room A Patentee after: SHENZHEN PERFECT POWER TECHNOLOGY CO.,LTD. Address before: 518000 Guangdong city of Shenzhen province Nanshan District hero garden 2 207 Patentee before: Yang Haiyan |
|
| CX01 | Expiry of patent term |
Granted publication date: 20141231 |
|
| CX01 | Expiry of patent term |