CN105870491A - Lithium ion battery adopting porous conductive base material and capable of preventing pole piece from being crimped in lamination - Google Patents
Lithium ion battery adopting porous conductive base material and capable of preventing pole piece from being crimped in lamination Download PDFInfo
- Publication number
- CN105870491A CN105870491A CN201610240285.5A CN201610240285A CN105870491A CN 105870491 A CN105870491 A CN 105870491A CN 201610240285 A CN201610240285 A CN 201610240285A CN 105870491 A CN105870491 A CN 105870491A
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- China
- Prior art keywords
- conductive base
- lithium ion
- active material
- hole
- preventing
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- 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
- H01M10/052—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
- H01M4/64—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)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Disclosed is a lithium ion battery adopting a porous conductive base material and capable of preventing a pole piece from being crimped in lamination. The lithium ion battery comprises a negative electrode, a diaphragm and a positive electrode which are laminated in sequence, wherein a negative electrode active material is arranged on one side, close to the diaphragm, of the negative electrode while a coated active material is arranged on one side, far from the diaphragm, of the negative electrode; a positive electrode active material is arranged on one side, close to the diaphragm, of the positive electrode while a coated active material is arranged on one side, far from the diaphragm, of the positive electrode; multiple holes capable of penetrating through the upper and lower surfaces of the conductive base materials are formed in the conductive base materials of the positive electrode and the negative electrode separately; and the holes are filled with corresponding active materials. According to the lithium ion battery provided by the invention, the holes are formed in the conductive base materials; the holes are filled with the active material when the active material is coated to improve the hardness of the pole piece so as to prevent the pole piece from being crimped in the laminating, so that the subsequent processing can be carried out conveniently; meanwhile, one side, which does not participle in the reaction, on the corresponding electrode is not coated with the active material, so that the waste of the active material can be avoided; and in addition, the lithium ion battery also has the advantages of thinning the battery thickness, increasing the battery capacity and the like.
Description
Technical field
The invention belongs to electrical storage device field, especially relate to the lithium ion battery of a kind of porous electroconductive substrates preventing and crimping during tabletting.
Background technology
Miniaturization along with electronic product, battery used is more and more thinner, lithium battery in such as some intelligent cards is the thinnest, being usually negative pole of existing Thin film cell, positive pole, the laminated structure that negative pole sets gradually, and the two sides of the conductive base of negative pole is coated with active material, like this active material of the lateral surface of two negative poles is just not involved in reaction, there is waste raw material, take battery space, the problem of loss battery capacity, if but negative pole is one side coating active material, the phenomenon of curling is arisen that when electrode rolls, following process can be brought a lot of trouble, the most how to design one and neither waste material, the Thin film cell that will not crimp again when electrode rolls becomes the problem of those skilled in the art's research.
Summary of the invention
In view of this, will not crimp again when rolling it is contemplated that propose electrode while that one neither wasting raw material, facilitate the lithium ion battery of the porous electroconductive substrates preventing from crimping during tabletting of following process.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:
nullA kind of lithium ion battery of the porous electroconductive substrates preventing from crimping during tabletting，Including positive pole、Negative pole and be located at barrier film between the two，Described negative pole、The order stacking successively of described barrier film and described positive pole is arranged，Described negative pole has the side of corresponding positive pole to be provided with negative electrode active material，Side without corresponding positive pole does not coat active substance，The conductive base of described negative pole is provided with some holes of the conductive base upper and lower surface running through described negative pole，It is filled with described negative electrode active material in hole on described negative conductive base material，Described positive pole has the side of corresponding negative pole to be provided with positive active material，Side without corresponding negative pole does not coat active substance，The conductive base of described positive pole is provided with the hole of some conductive base upper and lower surfaces running through described positive pole，Described positive active material it is filled with in hole on the conductive base of described positive pole.
The aperture of described hole is 0.5mm-5mm, and the pitch-row of described hole is 0.5-10mm.
Described hole is circle, ellipse, rhombus, triangle, square, pentalpha or heart.
The shape of described hole is identical.
The aperture of described hole is identical.
The pitch-row of described hole is identical.
The pitch-row of described hole, aperture are the most identical with shape.
Relative to prior art, Thin film cell of the present invention has the advantage that
The present invention is by punching on the conductive base of negative pole and positive pole, during coating, active substance can be filled in inlet hole, increase the hardness of pole piece, and then the curling of pole piece when preventing tabletting, facilitating following process, on positive and negative electrode, waste, without coating active substance, can be avoided in the side of the corresponding negative and positive electrode of nothing simultaneously, can also the thickness of thinning battery, it is also possible to increase the capacity of battery.
Accompanying drawing explanation
The accompanying drawing of the part constituting the present invention is used for providing a further understanding of the present invention, and the schematic description and description of the present invention is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of the present invention；
Fig. 2-5 is the structural representation of porous electroconductive substrates.
Description of reference numerals:
1-negative conductive base material, 2-negative electrode active material, 3-barrier film, 4-positive active material, 5-positive conductive base material.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the present invention and the feature in embodiment can be mutually combined.
Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
A kind of lithium ion battery of the porous electroconductive substrates preventing from crimping during tabletting, including positive pole, negative pole and be located at barrier film between the two, described negative pole, the order stacking successively of described barrier film and described positive pole is arranged, the conductive base of described negative pole is provided with negative electrode active material layer near the one side of described barrier film, the conductive base of described negative pole is provided with some holes of the conductive base upper and lower surface running through described negative pole, it is filled with described negative electrode active material in hole on described negative conductive base material, the conductive base of described positive pole is provided with positive electrode active material layer near the one side of described barrier film, the conductive base of described positive pole is provided with the hole of some conductive base upper and lower surfaces running through described positive pole, described positive active material it is filled with in hole on the conductive base of described positive pole.
The aperture of described hole is 0.5mm-5mm, and the pitch-row of described hole is 0.5-10mm.Different apertures and pitch-row can be selected according to the gauge size of concrete battery.
Described hole is that circle, ellipse, rhombus, triangle, square, pentalpha or heart etc. are variously-shaped.
The shape of described hole can be the same or different.Processing it is easier time identical.
The aperture of described hole can be the same or different.Processing it is easier time identical.
The pitch-row of described hole can be the same or different.Processing it is easier time identical.
The pitch-row of described hole, aperture are the most identical with shape.Improve the easy degree of large-scale production further.Can be designed for the requirement of different batteries time different.
Adding man-hour, the one side at positive pole and negative pole is coated with corresponding active substance, and in coating procedure, active substance can fill up hole, can strengthen tension force during hardness and the balance roller pole piece of pole piece, and when rolling, the phenomenon of curling would not occur in pole piece, facilitates following process.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (7)
1. the lithium ion battery preventing the porous electroconductive substrates crimped during tabletting, it is characterised in that:
Including positive pole, negative pole be located at barrier film between the two, described negative pole, described barrier film and described positive pole depend on
Secondary order stacking is arranged, and described negative pole has the side of corresponding positive pole to be provided with negative electrode active material, without correspondence just
The side of pole does not coat active substance, and the conductive base of described negative pole is provided with and runs through leading of described negative pole
Some holes of electricity base material upper and lower surface, are filled with described negative pole in the hole on described negative conductive base material
Active substance, described positive pole has the side of corresponding negative pole to be provided with positive active material, without the one of corresponding negative pole
Side does not coat active substance, and the conductive base of described positive pole is provided with some conductions running through described positive pole
The hole of base material upper and lower surface, is filled with described positive pole and lives in the hole on the conductive base of described positive pole
Property material.
The lithium-ion electric of the porous electroconductive substrates preventing from crimping during tabletting the most according to claim 1
Pond, it is characterised in that: the aperture of described hole is 0.5mm-5mm, and the pitch-row of described hole is 0.5-10mm.
The most according to claim 1 and 2 when preventing tabletting the lithium of the porous electroconductive substrates of curling from
Sub-battery, it is characterised in that: described hole be circle, ellipse, rhombus, triangle, square, five
Angle star or heart.
The lithium ion of the porous electroconductive substrates preventing from crimping during tabletting the most according to claim 1 or claim 2
Battery, it is characterised in that: the shape of described hole is identical.
The lithium ion of the porous electroconductive substrates preventing from crimping during tabletting the most according to claim 1 or claim 2
Battery, it is characterised in that: the aperture of described hole is identical.
The lithium ion of the porous electroconductive substrates preventing from crimping during tabletting the most according to claim 1 or claim 2
Battery, it is characterised in that: the pitch-row of described hole is identical.
The lithium ion of the porous electroconductive substrates preventing from crimping during tabletting the most according to claim 1 or claim 2
Battery, it is characterised in that: the pitch-row of described hole, aperture are the most identical with shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610240285.5A CN105870491A (en) | 2016-04-15 | 2016-04-15 | Lithium ion battery adopting porous conductive base material and capable of preventing pole piece from being crimped in lamination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610240285.5A CN105870491A (en) | 2016-04-15 | 2016-04-15 | Lithium ion battery adopting porous conductive base material and capable of preventing pole piece from being crimped in lamination |
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| Publication Number | Publication Date |
|---|---|
| CN105870491A true CN105870491A (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610240285.5A Pending CN105870491A (en) | 2016-04-15 | 2016-04-15 | Lithium ion battery adopting porous conductive base material and capable of preventing pole piece from being crimped in lamination |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023159634A1 (en) * | 2022-02-28 | 2023-08-31 | 宁德时代新能源科技股份有限公司 | Negative electrode pole piece, electrode assembly, battery cell, battery, electrical device, and method and device for manufacturing negative electrode pole piece |
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| CN101465416A (en) * | 2008-12-31 | 2009-06-24 | 大连海事大学 | High specific capacity composite electrode pole piece for lithium ion battery |
| CN202395087U (en) * | 2011-12-19 | 2012-08-22 | 惠州市恒晔科技有限公司 | Quickly chargeable lithium ion battery |
| CN103165901A (en) * | 2011-12-15 | 2013-06-19 | 罗栋 | Pole piece substrate and pole piece of lithium battery, and preparation method thereof |
| CN203039006U (en) * | 2012-12-29 | 2013-07-03 | 深圳市沃特玛电池有限公司 | Large capacity and high ratio secondary battery |
| CN103219524A (en) * | 2013-04-28 | 2013-07-24 | 奇瑞汽车股份有限公司 | Positive pole current collector foil and positive pole piece of laminated lithium ion battery and laminated lithium ion battery |
| CN103904284A (en) * | 2012-12-29 | 2014-07-02 | 深圳市沃特玛电池有限公司 | Secondary battery with large capacity and high magnification |
| CN205543094U (en) * | 2016-04-15 | 2016-08-31 | 辉能（天津）科技发展有限公司 | Porous electrically conductive substrate's lithium ion battery |
-
2016
- 2016-04-15 CN CN201610240285.5A patent/CN105870491A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101465416A (en) * | 2008-12-31 | 2009-06-24 | 大连海事大学 | High specific capacity composite electrode pole piece for lithium ion battery |
| CN103165901A (en) * | 2011-12-15 | 2013-06-19 | 罗栋 | Pole piece substrate and pole piece of lithium battery, and preparation method thereof |
| CN202395087U (en) * | 2011-12-19 | 2012-08-22 | 惠州市恒晔科技有限公司 | Quickly chargeable lithium ion battery |
| CN203039006U (en) * | 2012-12-29 | 2013-07-03 | 深圳市沃特玛电池有限公司 | Large capacity and high ratio secondary battery |
| CN103904284A (en) * | 2012-12-29 | 2014-07-02 | 深圳市沃特玛电池有限公司 | Secondary battery with large capacity and high magnification |
| CN103219524A (en) * | 2013-04-28 | 2013-07-24 | 奇瑞汽车股份有限公司 | Positive pole current collector foil and positive pole piece of laminated lithium ion battery and laminated lithium ion battery |
| CN205543094U (en) * | 2016-04-15 | 2016-08-31 | 辉能（天津）科技发展有限公司 | Porous electrically conductive substrate's lithium ion battery |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023159634A1 (en) * | 2022-02-28 | 2023-08-31 | 宁德时代新能源科技股份有限公司 | Negative electrode pole piece, electrode assembly, battery cell, battery, electrical device, and method and device for manufacturing negative electrode pole piece |
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Application publication date: 20160817 |
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