CN109686984A - Collector, collector preparation method and application collector cathode pole piece - Google Patents
Collector, collector preparation method and application collector cathode pole piece Download PDFInfo
- Publication number
- CN109686984A CN109686984A CN201811539369.4A CN201811539369A CN109686984A CN 109686984 A CN109686984 A CN 109686984A CN 201811539369 A CN201811539369 A CN 201811539369A CN 109686984 A CN109686984 A CN 109686984A
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- China
- Prior art keywords
- hole
- copper foil
- collector
- foil ontology
- ontology
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/661—Metal or alloys, e.g. alloy coatings
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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
- H01M10/052—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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/64—Carriers or collectors
- H01M4/70—Carriers or collectors characterised by shape or form
- H01M4/80—Porous plates, e.g. sintered carriers
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Cell Electrode Carriers And Collectors (AREA)
Abstract
Present invention discloses a kind of collectors comprising copper foil ontology, multiple first through hole and multiple second through-holes, multiple first through hole are opened in the one side of copper foil ontology, and multiple second through-holes are opened in the another side of copper foil ontology；Present invention further teaches a kind of cathode pole pieces of the preparation method and application collector of collector.Present invention, copper foil ontology is by the way of two-sided punching, so that the two sides of copper foil ontology is staggered to form multiple first through hole and the second through-hole, in punching, the two sides of copper foil ontology avoids the Dish deformation situation of copper foil ontology respectively by identical stamping press.In addition, copper foil ontology has still been stayed on copper foil ontology by the part of aperture, the waste of copper is avoided.
Description
Technical field
The present invention relates to lithium ion battery negative electrode preparation technical field, it is specifically related to a kind of collector, collector
Preparation method and application collector cathode pole piece.
Background technique
Lithium ion battery is mainly made of anode pole piece, cathode pole piece, diaphragm and electrolyte etc., and wherein cathode pole piece is to lithium
The performance of ion battery plays an important role.The collector of traditional cathode pole piece generally uses copper foil, and lithium ion battery exists
Often charge efficiency is caused to reduce due to active material and collector are removed in charge and discharge process, it is to solve the above-mentioned problems, existing
Have in technology, has used and opened up collector of the copper foil as cathode pole piece of through-hole in thickness direction；However, such porous
Copper foil be all be often unilateral punching, cause copper foil that there is certain recess, in addition, copper foil can be dropped by the part of aperture,
Cause the waste of copper.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides the preparation method and application collector of a kind of collector, collector
Cathode pole piece.
A kind of collector includes copper foil ontology；
Multiple first through hole, multiple first through hole are opened in the one side of copper foil ontology；And
Multiple second through-holes, multiple second through-holes are opened in the another side of copper foil ontology.
According to an embodiment of the present invention, the longitudinal section of each first through hole is horn-like.
According to an embodiment of the present invention, the longitudinal section of every one second through-hole is horn-like.
According to an embodiment of the present invention, multiple first through hole are staggered with multiple second through-holes.
According to an embodiment of the present invention, multiple first through hole are arranged successively along the width direction of copper foil ontology, multiple row
First through hole is arranged successively along the length direction of copper foil ontology, has interval between the first through hole per adjacent two column；
Multiple second through-holes are arranged successively along the width direction of copper foil ontology, and the second through-hole of multiple row is along copper foil ontology
Length direction is arranged successively, and second through-hole of column is located between the first through hole of adjacent two column.
According to an embodiment of the present invention, the thickness of copper foil ontology is between 9-12um.
According to an embodiment of the present invention, the aperture of first through hole and the second through-hole is between 1-5um.
A kind of preparation method of collector includes the following steps:
Copper foil ontology is made；
Copper foil ontology opens up multiple first through hole on one side；
The another side of copper foil ontology opens up multiple second through-holes.
According to an embodiment of the present invention, the one side of copper foil ontology opens up multiple first through hole by perforating press；
The another side of copper foil ontology opens up multiple second through-holes by perforating press.
It is a kind of to include: using the cathode pole piece of collector
Above-mentioned collector and negative electrode material coated on collector.
Compared with the existing technology: copper foil ontology is by the way of two-sided punching, so that the two sides of copper foil ontology is staggered to form
Multiple first through hole and the second through-hole, in punching, the two sides of copper foil ontology avoids copper foil respectively by identical stamping press
The Dish deformation situation of ontology.In addition, copper foil ontology has still been stayed on copper foil ontology by the part of aperture, the wave of copper is avoided
Take.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present application, constitutes part of this application, this Shen
Illustrative embodiments and their description please are not constituted an undue limitation on the present application for explaining the application.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of collector in embodiment 1；
Fig. 2 is the cross-sectional view of collector in embodiment 1.
Specific embodiment
Multiple embodiments of the invention will be disclosed with schema below, as clearly stated, the details in many practices
It will be explained in the following description.It should be appreciated, however, that the details in these practices is not applied to limit the present invention.Also
It is to say, in some embodiments of the invention, the details in these practices is non-essential.In addition, for the sake of simplifying schema,
Some known usual structures and component will be painted it in the drawings in simply illustrative mode.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only in the embodiment of the present invention
For explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, if
When the particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In addition, the description for being such as related to " first ", " second " in the present invention is used for description purposes only, not especially censure
The meaning of order or cis-position, also non-to limit the present invention, the component described just for the sake of difference with same technique term
Or operation, it is not understood to indicate or imply its relative importance or implicitly indicates the number of indicated technical characteristic
Amount." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one of the features.In addition, each
Technical solution between a embodiment can be combined with each other, but must can be implemented as base with those of ordinary skill in the art
Plinth will be understood that the combination of this technical solution is not present when conflicting or cannot achieve when occurs in the combination of technical solution,
Also not the present invention claims protection scope within.
For that can further appreciate that the contents of the present invention, feature and effect, the following examples are hereby given, and cooperates attached drawing detailed
It is described as follows:
Embodiment 1
Referring to Figures 1 and 2, Fig. 1 is the structural schematic diagram of collector in embodiment 1, and Fig. 2 is collector in embodiment 1
Cross-sectional view.Collector includes copper foil ontology 1, multiple first through hole 2 and multiple second through-holes 3 in the present embodiment.
Multiple first through hole 2 are opened in the one side of copper foil ontology 1；Multiple second through-holes 3 are opened in the another of copper foil ontology 1
Face；Multiple first through hole 2 are staggered with multiple second through-holes 3.Specifically, width of multiple first through hole 2 along copper foil ontology 1
Degree direction is arranged successively, and multiple row first through hole 2 is arranged successively along the length direction of copper foil ontology 2, per the first of adjacent two column
There is interval between through-hole 2；Multiple second through-holes 3 are arranged successively along the width direction of copper foil ontology 1, the second through-hole of multiple row 3
It is arranged successively along the length direction of copper foil ontology 1, and second through-hole of column 3 is located between the first through hole 2 of adjacent two column.
In the present embodiment, the longitudinal section of each first through hole 2 is horn-like；The longitudinal section of every one second through-hole 3 is loudspeaker
Shape.
In the present embodiment, the thickness of copper foil ontology 1 is between 9-12um, it is preferred that copper foil ontology 1 with a thickness of 10um.
The aperture of first through hole 2 and the second through-hole 3 is between 1-5um, it is preferred that the aperture of first through hole 2 and the second through-hole 3 is
4um。
Relative to traditional porous copper foil, the copper foil ontology 1 of the collector in the present embodiment by the way of two-sided punching,
So that the two sides of copper foil ontology 1 is staggered to form multiple first through hole 2 and the second through-hole 3, the two sides of copper foil ontology 1 point in punching
Not by identical stamping press, the Dish deformation situation of copper foil ontology 1 is avoided.In addition, first through hole 2 and the second through-hole 3 are
It is horn-like, it has still been stayed on copper foil ontology 1 by the part of aperture, has avoided the waste of copper；Moreover, horn-like first is logical
Hole 2 and the second through-hole 3 provide space for the negative electrode active material expansion in negative electrode material, and negative electrode active material can be
It moves in horn-like first through hole 2 and the second through-hole 3 without departing from copper foil ontology 1, so that lithium ion conduction is more smoothly,
And then guarantee the charge efficiency of lithium ion battery.
Embodiment 2
The preparation method of collector in the present embodiment includes the following steps:
Copper foil ontology 1 is made, is made specifically, calendering technology can be used in copper foil ontology 1, i.e., copper foil ontology 1 is calendering copper
Foil, it is preferred that the calendering thickness of copper foil ontology 1 is between 9-12um.
Copper foil ontology 1 opens up multiple first through hole 2 on one side, specifically, the one side of copper foil ontology 1 is opened up by perforating press
There are multiple first through hole 2, the another side of copper foil ontology 1 opens up multiple second through-holes 3 by perforating press, and perforating press is rushed using taper
Head is rushed out part without removal copper foil ontology 1, so that the longitudinal section of first through hole 2 and the second through-hole 3 is approximate loudspeaker
Shape；The part that copper foil ontology 1 is punched retains, and carries out secondary add relative to needing to be rushed out copper foil ontology 1 part in tradition
Work, the collector in the present embodiment prepare more convenient, are not necessarily to secondary operation, it is two-sided using etc. works amount carry out the processing of through-hole,
Avoid the deformation of copper foil, and the longitudinal section of entire first through hole 2 and the second through-hole 3 be approximately it is horn-like, negative electrode material
Negative electrode active material can move when expanding in horn-like first through hole 2 and the second through-hole 3, so that copper foil ontology 1 is as collection
The effect of fluid is more preferable.In the present embodiment, numerical control punching machine is can be used in perforating press.
Embodiment 3
Cathode pole piece in the present embodiment using collector includes: collector in above-described embodiment 1 and be coated on should
The negative electrode material of collector, negative electrode material in the present embodiment can for silicon based anode material or carbon based negative electrodes material one of
Or it is a variety of.
When preparing cathode pole piece, if negative electrode material is coated using silicon machine negative electrode active material, silicon machine cathode is living
Property material can generate swelling, and the expansion that horn-like first through hole 2 and the second through-hole 3 is silicon machine negative electrode active material mentions
Space has been supplied, has prevented negative electrode material from cracking or obscission occurs, has improved the utilization rate of negative electrode material, and then reduce lithium
The decaying of ion battery capacity improves the cycle performance of battery.
Upper is only embodiments of the present invention, is not intended to restrict the invention.To those skilled in the art,
The invention may be variously modified and varied.All any modifications made in spirit and principles of the present invention, equivalent replacement,
Improve etc., it should all be included within scope of the presently claimed invention.
Claims (10)
1. a kind of collector characterized by comprising
Copper foil ontology；
Multiple first through hole, multiple first through hole are opened in the one side of the copper foil ontology；And
Multiple second through-holes, multiple second through-holes are opened in the another side of the copper foil ontology.
2. collector according to claim 1, which is characterized in that the longitudinal section of each first through hole is horn-like.
3. collector according to claim 1, which is characterized in that the longitudinal section of each second through-hole is horn-like.
4. collector according to claim 1, which is characterized in that multiple first through hole and multiple second through-holes
It is staggered.
5. collector according to claim 1, which is characterized in that multiple first through hole are along the copper foil ontology
Width direction is arranged successively, and first through hole described in multiple row is arranged successively along the length direction of copper foil ontology, per adjacent two column
There is interval between first through hole；
Multiple second through-holes are arranged successively along the width direction of the copper foil ontology, and the second through-hole is along copper described in multiple row
The length direction of foil ontology is arranged successively, and column second through-hole is located between the first through hole of adjacent two column.
6. collector according to claim 1, which is characterized in that the thickness of the copper foil ontology is between 9-12um.
7. collector according to claim 1, which is characterized in that the aperture of the first through hole and the second through-hole is in 1-
Between 5um.
8. a kind of preparation method of collector, which comprises the steps of:
Copper foil ontology is made；
The copper foil ontology opens up multiple first through hole on one side；
The another side of the copper foil ontology opens up multiple second through-holes.
9. the preparation method of collector according to claim 8, which is characterized in that the copper foil ontology passes through punching on one side
Hole machine opens up multiple first through hole；
The another side of the copper foil ontology opens up multiple second through-holes by perforating press.
10. a kind of cathode pole piece using collector characterized by comprising
Collector as claimed in claim 1 to 7；And
Negative electrode material coated on the collector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811539369.4A CN109686984A (en) | 2018-12-17 | 2018-12-17 | Collector, collector preparation method and application collector cathode pole piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811539369.4A CN109686984A (en) | 2018-12-17 | 2018-12-17 | Collector, collector preparation method and application collector cathode pole piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109686984A true CN109686984A (en) | 2019-04-26 |
Family
ID=66187771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811539369.4A Pending CN109686984A (en) | 2018-12-17 | 2018-12-17 | Collector, collector preparation method and application collector cathode pole piece |
Country Status (1)
| Country | Link |
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| CN (1) | CN109686984A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112542570A (en) * | 2019-09-23 | 2021-03-23 | 北京小米移动软件有限公司 | Silicon negative pole piece, preparation method thereof and lithium ion battery |
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| CN104282872A (en) * | 2014-10-24 | 2015-01-14 | 南通海星电子股份有限公司 | Self-riveting type through hole conductive coating metal foil and preparation method thereof |
| CN204118183U (en) * | 2014-08-01 | 2015-01-21 | 中国电子科技集团公司第十八研究所 | The three-dimensional current collector structure of lithium primary battery negative plate |
| CN205122691U (en) * | 2015-09-16 | 2016-03-30 | 深圳市言九电子科技有限公司 | Lithium ion battery is with anodal mass flow body pole piece |
| KR20160089656A (en) * | 2015-01-20 | 2016-07-28 | 주식회사 엘지화학 | Secondary Battery Comprising Current Collector with Through Hole |
| CN106505210A (en) * | 2016-12-07 | 2017-03-15 | 辉能（天津）科技发展有限公司 | 3D foils, the preparation method and applications of the positive/negative plate containing the foil |
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2018
- 2018-12-17 CN CN201811539369.4A patent/CN109686984A/en active Pending
Patent Citations (5)
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| CN204118183U (en) * | 2014-08-01 | 2015-01-21 | 中国电子科技集团公司第十八研究所 | The three-dimensional current collector structure of lithium primary battery negative plate |
| CN104282872A (en) * | 2014-10-24 | 2015-01-14 | 南通海星电子股份有限公司 | Self-riveting type through hole conductive coating metal foil and preparation method thereof |
| KR20160089656A (en) * | 2015-01-20 | 2016-07-28 | 주식회사 엘지화학 | Secondary Battery Comprising Current Collector with Through Hole |
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| CN106505210A (en) * | 2016-12-07 | 2017-03-15 | 辉能（天津）科技发展有限公司 | 3D foils, the preparation method and applications of the positive/negative plate containing the foil |
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| Title |
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| 中国电池工业协会主编: "《中国电池工业经营全书》", 31 January 2006 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112542570A (en) * | 2019-09-23 | 2021-03-23 | 北京小米移动软件有限公司 | Silicon negative pole piece, preparation method thereof and lithium ion battery |
| CN112542570B (en) * | 2019-09-23 | 2022-08-09 | 北京小米移动软件有限公司 | Silicon negative pole piece, preparation method thereof and lithium ion battery |
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Application publication date: 20190426 |
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