CN104393335A - Lithium ion battery and manufacturing method thereof - Google Patents
Lithium ion battery and manufacturing method thereof Download PDFInfo
- Publication number
- CN104393335A CN104393335A CN201410755865.9A CN201410755865A CN104393335A CN 104393335 A CN104393335 A CN 104393335A CN 201410755865 A CN201410755865 A CN 201410755865A CN 104393335 A CN104393335 A CN 104393335A
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- China
- Prior art keywords
- negative
- plate
- copper foil
- hole
- lithium ion
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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
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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
- H01M10/058—Construction or manufacture
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Cell Electrode Carriers And Collectors (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides a lithium ion battery and a manufacturing method thereof. The lithium ion battery comprises a positive plate, a diaphragm and a negative plate which are stacked in sequence and folded to form a battery cell, wherein the battery cell is positioned in a cavity formed by an aluminum film; the cavity is filled with electrolyte; the positive plate comprises an aluminum foil and a positive electrode current collector; the positive electrode current collector is perpendicularly welded at one end of the aluminum foil; a plurality of first through holes are formed in the aluminum foil; the front surface, the bottom surface and the first through holes of the aluminum foil are filled with and covered by positive electrode material layers; the negative plate comprises a negative electrode current collector and a copper foil; the negative electrode current collector is perpendicularly welded at one end of the copper foil; a plurality of second through holes are formed in the copper foil; the front surface, the bottom surface and the first through holes of the copper foil are filled with and covered by negative electrode material layers. Under a condition that the appearance size is not greatly changed, the energy density can be greatly increased.
Description
Technical field
The present invention relates to cell art, particularly a kind of lithium ion battery and preparation method thereof.
Background technology
In prior art, lithium ion battery as a kind of secondary cell of environmental protection, at portable set as the fields such as mobile phone, video camera, notebook computer are widely applied.Right face, along with the development of modern society, requires more and more higher to lithium ion battery energy density.But current material and production technology, the carrying out step that govern lithium ion battery energy density promotes.
Summary of the invention
The invention provides a kind of lithium ion battery and preparation method thereof, to meet when profile change in size is little, energy density can significantly promote.
To achieve these goals, the invention provides following technical scheme:
A kind of lithium ion battery, it comprises: positive plate 1, negative plate 2, barrier film 3, electrolyte 4 and aluminium film 5, described positive plate 1, barrier film 3, negative plate 2 stacks gradually and rolls over superimposed layer and forms battery core 6, described battery core 6 is positioned at the cavity that described aluminium film 5 is formed, electrolyte 4 is also filled with in described cavity, described positive plate 1 comprises: aluminium foil 11 and plus plate current-collecting body 12, described plus plate current-collecting body 12 is vertically welded in one end of described aluminium foil 11, described aluminium foil 11 is provided with multiple first through hole 13, the front of described aluminium foil 11, all fill in bottom surface and the first through hole 13 and be coated with positive electrode material layer 14, described negative plate 2 comprises: negative current collector 22 and Copper Foil 21, described negative current collector 22 is vertically welded in one end of described Copper Foil 21, described Copper Foil 21 is provided with multiple second through hole 23, the front of described Copper Foil 21, all fill in bottom surface and the second through hole 23 and be coated with negative electrode material layer 24.
A kind of lithium ion battery manufacture method, it comprises step:
A, by one end vertical welding plus plate current-collecting body 12 of aluminium foil 11, one end vertical welding negative current collector 22 of Copper Foil 21;
B, multiple first through hole 13 is set on aluminium foil 11, Copper Foil 21 arranges multiple second through hole 23;
Fill and cover positive electrode material layer 14 in C, front at described aluminium foil 11, bottom surface and the first through hole to be formed and fill and cover negative electrode material layer 24 in positive plate 1, front at described Copper Foil 21, bottom surface and the second through hole and form negative plate 2;
D, described positive plate 1, barrier film 3 stacked gradually with negative plate 2 together with, then by winding, lamination or folding mode, positive plate 1, barrier film 3, negative plate 2 folding superimposed layer are made into battery core 6, described battery core 6 is placed in the aluminium film 5 of sealing, and inject electrolyte 4, complete the making of lithium ion battery.
By implementing above technical scheme, there is following technique effect: lithium ion battery provided by the invention, when doing with carrier filling positive and negative pole material with holes, make it when identical width and thickness, more can hold positive and negative pole material, to the punching processing of carrier, technique is simple, to the punching processing of carrier, to the shape in hole and less demanding, can not only metric density increase substantially, and electric conductivity, also will increase substantially, and internal resistance can significantly reduce.
Accompanying drawing explanation
The lithium ion battery that Fig. 1 provides for the embodiment of the present invention be not coated with the aluminium foil before positive and negative pole material and copper foil structure schematic diagram;
The profile being coated with positive and negative pole material of the lithium ion battery that Fig. 2 provides for the embodiment of the present invention;
The encapsulation profile of the lithium ion battery that Fig. 3 provides for the embodiment of the present invention.
Embodiment
Technical scheme for a better understanding of the present invention, describes embodiment provided by the invention in detail below in conjunction with accompanying drawing.
The embodiment of the present invention provides a kind of lithium ion battery, as Fig. 1, shown in Fig. 2 and Fig. 3, it comprises: positive plate 1, negative plate 2, barrier film 3, electrolyte 4 and aluminium film 5, described positive plate 1, barrier film 3, negative plate 2 stacks gradually and rolls over superimposed layer (before this by positive plate, barrier film and negative plate are laminated together to form an entirety, and then this foldable integral is got up, and by other same entirety more from level to level add stack up) formed battery core 6, described battery core 6 is positioned at the cavity that described aluminium film 5 is formed, electrolyte 4 is also filled with in described cavity, described positive plate 1 comprises: aluminium foil 11 and plus plate current-collecting body 12, described plus plate current-collecting body 12 is vertically welded in one end of described aluminium foil 11, described aluminium foil 11 is provided with multiple first through hole 13, the front of described aluminium foil 11, all fill in bottom surface and the first through hole 13 and be coated with positive electrode material layer 14, described negative plate 2 comprises: negative current collector 22 and Copper Foil 21, described negative current collector 22 is vertically welded in one end of described Copper Foil 21, described Copper Foil 21 is provided with multiple second through hole 23, the front of described Copper Foil 21, all fill in bottom surface and the second through hole 23 and be coated with negative electrode material layer 24.
The embodiment of the present invention also provides a kind of lithium ion battery manufacture method, as shown in Figure 1, Figure 2 and Figure 3, comprises step:
A, by one end vertical welding plus plate current-collecting body 12 of aluminium foil 11, one end vertical welding negative current collector 22 of Copper Foil 21;
B, multiple first through hole 13 is set on aluminium foil 11, Copper Foil 21 arranges multiple second through hole 23;
Fill and cover positive electrode material layer 14 in C, front at described aluminium foil 11, bottom surface and the first through hole to be formed and fill and cover negative electrode material layer 24 in positive plate 1, front at described Copper Foil 21, bottom surface and the second through hole and form negative plate 2;
D, described positive plate 1, barrier film 3 stacked gradually with negative plate 2 together with, then by winding, lamination or folding mode, positive plate 1, barrier film 3, negative plate 2 folding superimposed layer are made into battery core 6, described battery core 6 is placed in the aluminium film 5 of sealing, and inject electrolyte 4, complete the making of lithium ion battery.
In the through hole of aluminium foil and Copper Foil, be equally filled with positive and negative material, namely positive and negative material has the increase of some, and battery capacity namely can be made to have greatly improved.
Have through hole in the middle of the carrier (that is: aluminium foil and Copper Foil) of positive and negative pole material, make lithium ion when moving, above-below direction can pass through, and strengthens its electric conductivity, and namely the internal resistance of cell also can significantly reduce.
Above a kind of lithium ion battery that the embodiment of the present invention provides and preparation method thereof is described in detail, for one of ordinary skill in the art, according to the thought of the embodiment of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (2)
1. a lithium ion battery, it is characterized in that, comprise: positive plate (1), negative plate (2), barrier film (3), electrolyte (4) and aluminium film (5), described positive plate (1), barrier film (3), negative plate (2) stacks gradually and rolls over superimposed layer and forms battery core (6), described battery core (6) is positioned at the cavity that described aluminium film (5) is formed, electrolyte (4) is also filled with in described cavity, described positive plate (1) comprising: aluminium foil (11) and plus plate current-collecting body (12), described plus plate current-collecting body (12) is vertically welded in one end of described aluminium foil (11), described aluminium foil (11) is provided with multiple first through hole (13), the front of described aluminium foil (11), all fill and be coated with positive electrode material layer (14) in bottom surface and the first through hole (13), described negative plate (2) comprising: negative current collector (22) and Copper Foil (21), described negative current collector (22) is vertically welded in one end of described Copper Foil (21), described Copper Foil (21) is provided with multiple second through hole (23), the front of described Copper Foil (21), all fill and be coated with negative electrode material layer (24) in bottom surface and the second through hole (23).
2. a lithium ion battery manufacture method, is characterized in that, comprises step:
A, by one end vertical welding plus plate current-collecting body (12) of aluminium foil (11), one end vertical welding negative current collector (22) of Copper Foil (21);
B, multiple first through hole (13) is set on aluminium foil (11), Copper Foil (21) arranges multiple second through hole (23);
Fill and cover positive electrode material layer (14) in C, front in described aluminium foil (11), bottom surface and the first through hole to be formed and fill and cover negative electrode material layer (24) in positive plate (1), front in described Copper Foil (21), bottom surface and the second through hole and form negative plate (2);
D, described positive plate (1), barrier film (3) and negative plate (2) are stacked gradually together, then by winding, lamination or folding mode, positive plate (1), barrier film (3), negative plate (2) folding superimposed layer are made into battery core (6), described battery core (6) is placed in the aluminium film (5) of sealing, and inject electrolyte (4), complete the making of lithium ion battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410755865.9A CN104393335A (en) | 2014-12-10 | 2014-12-10 | Lithium ion battery and manufacturing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410755865.9A CN104393335A (en) | 2014-12-10 | 2014-12-10 | Lithium ion battery and manufacturing method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN104393335A true CN104393335A (en) | 2015-03-04 |
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| CN201410755865.9A Pending CN104393335A (en) | 2014-12-10 | 2014-12-10 | Lithium ion battery and manufacturing method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104993150A (en) * | 2015-07-04 | 2015-10-21 | 广东烛光新能源科技有限公司 | Flexible device and preparation method thereof |
| CN105047943A (en) * | 2015-07-04 | 2015-11-11 | 广东烛光新能源科技有限公司 | Flexible device and preparation method thereof |
| CN105140525A (en) * | 2015-07-04 | 2015-12-09 | 广东烛光新能源科技有限公司 | Flexible device and manufacturing method thereof |
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| CN1588673A (en) * | 2004-09-03 | 2005-03-02 | 深圳市创明电池技术有限公司 | Method for producing liqium lithium ion cell for increasing product consistency and circulation life |
| CN101867060A (en) * | 2010-05-12 | 2010-10-20 | 清华大学 | Lithium-ion energy storage battery |
| CN103165901A (en) * | 2011-12-15 | 2013-06-19 | 罗栋 | Pole piece substrate and pole piece of lithium battery, and preparation method thereof |
| JP2014120404A (en) * | 2012-12-18 | 2014-06-30 | Mitsubishi Motors Corp | 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 |
| CN204243146U (en) * | 2014-12-10 | 2015-04-01 | 深圳市三讯电子有限公司 | A kind of lithium ion battery |
-
2014
- 2014-12-10 CN CN201410755865.9A patent/CN104393335A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1588673A (en) * | 2004-09-03 | 2005-03-02 | 深圳市创明电池技术有限公司 | Method for producing liqium lithium ion cell for increasing product consistency and circulation life |
| CN101867060A (en) * | 2010-05-12 | 2010-10-20 | 清华大学 | Lithium-ion energy storage battery |
| CN103165901A (en) * | 2011-12-15 | 2013-06-19 | 罗栋 | Pole piece substrate and pole piece of lithium battery, and preparation method thereof |
| JP2014120404A (en) * | 2012-12-18 | 2014-06-30 | Mitsubishi Motors Corp | 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 |
| CN204243146U (en) * | 2014-12-10 | 2015-04-01 | 深圳市三讯电子有限公司 | A kind of lithium ion battery |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104993150A (en) * | 2015-07-04 | 2015-10-21 | 广东烛光新能源科技有限公司 | Flexible device and preparation method thereof |
| CN105047943A (en) * | 2015-07-04 | 2015-11-11 | 广东烛光新能源科技有限公司 | Flexible device and preparation method thereof |
| CN105140525A (en) * | 2015-07-04 | 2015-12-09 | 广东烛光新能源科技有限公司 | Flexible device and manufacturing method thereof |
| CN105047943B (en) * | 2015-07-04 | 2018-03-30 | 广东烛光新能源科技有限公司 | A kind of flexible device and preparation method thereof |
| CN105140525B (en) * | 2015-07-04 | 2018-07-03 | 广东烛光新能源科技有限公司 | flexible device and preparation method thereof |
| CN104993150B (en) * | 2015-07-04 | 2018-11-16 | 广东烛光新能源科技有限公司 | A kind of flexible device and preparation method thereof |
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Application publication date: 20150304 |
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| RJ01 | Rejection of invention patent application after publication |