CN108493393A - A kind of new coating process - Google Patents
A kind of new coating process Download PDFInfo
- Publication number
- CN108493393A CN108493393A CN201810214582.1A CN201810214582A CN108493393A CN 108493393 A CN108493393 A CN 108493393A CN 201810214582 A CN201810214582 A CN 201810214582A CN 108493393 A CN108493393 A CN 108493393A
- Authority
- CN
- China
- Prior art keywords
- foil
- coating process
- described hole
- new coating
- lithium ion
- 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.)
- Pending
Links
Classifications
-
- 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
- H01M4/04—Processes of manufacture in general
- H01M4/0402—Methods of deposition of the material
- H01M4/0404—Methods of deposition of the material by coating on electrode collectors
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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
- H01M4/139—Processes of manufacture
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The present invention provides a kind of new coating process, including foil, multiple holes in rule setting are equipped on the foil, described hole is round, and spacing is equal between adjacent described hole, the coating process, it is spiled with laser on foil, pole piece both sides material is connected to form an entirety after coating, when there is a face actual capacity insufficient on pole piece, when another side has more than needed, positive lithium ion can to form two sides strengths and weaknesses complementary by the way that aperture migrates.
Description
Technical field
The present invention relates to field of batteries more particularly to a kind of new coating process.
Background technology
General lithium ion battery, pole piece structure are：Foil adds the raw material being pasted onto on foil to form, positive/negative plate winding
Afterwards, the list of the two-sided respectively symmetrically negative plate of positive plate list is two-sided, because there is foil to separate, so two sides positive negative pole material is in battery
Face is that independent each positive effect, and it is by two to be equivalent to inside battery " battery " it is formed in parallel, when the two sides face of pole piece
When density is inconsistent, battery performance may be impacted.
Invention content
It is an object of the invention in view of the above shortcomings of the prior art, provide a kind of new coating process, on foil
Face laser boring keeps the two sides surface density of pole piece consistent, keeps excellent battery performance.
To achieve the above object, present invention employs following technical solutions：
The present invention provides a kind of new coating process, including foil, multiple holes in rule setting are equipped on the foil
Hole, described hole are round, and spacing is equal between adjacent described hole.
Further, a diameter of 0.1~2mm of described hole.
Further, include the following steps：
S1, one side is first applied with the foil for accomplishing fluently described hole, then dried；
S2, another side is applied again, then dried, then roll-in.
Further, the foil, described hole and slurry are integral.
Further, which can be applied to rectangle lithium ion battery, column lithium ion battery, arc lithium ion
Battery.
Beneficial effects of the present invention are：The coating process, is spiled on foil with laser, two sapwood of pole piece after coating
Material conducting forms an entirety, and when there is a face actual capacity insufficient on pole piece, when another side has more than needed, positive lithium ion can pass through
Aperture migrates and forms two sides strengths and weaknesses complementation.
Description of the drawings
Fig. 1 is the structural schematic diagram of foil；
Wherein, 1, foil；2, hole.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
Referring to Fig. 1, a kind of new coating process, including foil 1, multiple holes in rule setting are equipped on the foil 1
Hole 2, described hole 2 are round, and spacing is equal between adjacent described hole 2.
A diameter of 1mm of described hole 2.
A kind of new coating process, includes the following steps：
S1, one side is first applied with the foil 1 for accomplishing fluently described hole 2, then dried；Prevent slurry from adhering to roller by aperture
On wheel.
S2, another side is applied again, then dried, then roll-in.When applying two-sided, because there is aperture above foil, slurry meeting
It is joined together to form an entirety through small holes.
The foil 1, described hole 2 and slurry are integral.
Battery is in chemical conversion and partial volume, because having aperture above foil, so when the faces cathode A1 do not have sufficient space to receive lithium
When ion, lithium ion can continue to move to the faces the cathode A1 back side by aperture.
The two-sided material of list above pole piece links together, and pole piece is made to reach such effect：Former (1.1+0.9)/2<1 becomes
(1.1+0.9)/2=1.
Lithium ion battery in process of production, need to pass through painting process, and specific operation is as follows：Positive and negative anodes raw material are configured to
Slurry → slurry is evenly coated in above foil → and drying → slurry is evenly coated on foil another side → drying → painting process again
It is basically completed.
So the positive/negative plate for applying out, singly has foil among two-sided material and separates, this requires the surface densities of every one side
Must otherwise it will appear within the scope of certain production engineering specifications：
Cathode divides the faces A1 and the faces A2,
Anode divides the faces B1 and the faces B2,
Pole piece uniformly corresponds to A1 and corresponds to B1 after winding, and A2 corresponds to B2, when pole piece surface density exception：
A1 actual capacity ratios B1 is insufficient, and capacity of negative plates deficiency can cause pole piece to analyse lithium, and there are security risks；
A2 actual capacity ratios B2 is bigger than normal, and cathode excessively can cause design data, the wastes such as space mostly.
It is equivalent to A1, A2, B1, B2 design capacities are all 1, have foil to separate because intermediate per one side,
So work as A1=0.9, A2=1.1, B1=1, when B2=1,
Just it will appear (0.9+1.1)/2<1 the case where,
Similarly, when other surface density actual capacity is unpaired, can also there be such exception.
The new coating process after slurry is coated on foil, makes the raw material on both sides by the laser boring on foil
After being joined together to form an entirety, it is equivalent to positive/negative plate and respectively there was only one side and symmetrical, solution pole piece both sides face
Density inconsistence problems.
The coating process can be applied to rectangle lithium ion battery, column lithium ion battery, arc lithium ion battery.
Embodiments of the present invention above described embodiment only expresses, the description thereof is more specific and detailed, but can not
Therefore it is interpreted as the limitation to the scope of the claims of the present invention.It should be pointed out that for those of ordinary skill in the art,
Without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection model of the present invention
It encloses.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (5)
1. a kind of new coating process, it is characterised in that：Including foil (1), it is in rule setting to be equipped on the foil (1) multiple
Hole (2), described hole (2) are round, and spacing is equal between adjacent described hole (2).
2. a kind of new coating process according to claim 1, it is characterised in that：A diameter of the 0.1 of described hole (2)~
2mm。
3. a kind of new coating process according to claim 1, which is characterized in that include the following steps：
S1, one side is first applied with the foil (1) for accomplishing fluently described hole (2), then dried；
S2, another side is applied again, then dried, then roll-in.
4. a kind of new coating process according to claim 2, it is characterised in that：The foil (1), described hole (2) and
Slurry is integral.
5. a kind of new coating process according to claim 1, it is characterised in that：The coating process can be applied to rectangle lithium
Ion battery, column lithium ion battery, arc lithium ion battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810214582.1A CN108493393A (en) | 2018-03-15 | 2018-03-15 | A kind of new coating process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810214582.1A CN108493393A (en) | 2018-03-15 | 2018-03-15 | A kind of new coating process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108493393A true CN108493393A (en) | 2018-09-04 |
Family
ID=63339527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810214582.1A Pending CN108493393A (en) | 2018-03-15 | 2018-03-15 | A kind of new coating process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108493393A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1167222A (en) * | 1997-08-22 | 1999-03-09 | Kazuo Tagawa | Current collector for battery and battery using it |
| 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 |
| CN1945878A (en) * | 2006-09-22 | 2007-04-11 | 任晓平 | Method for increasing secondary lithium ion battery volume and multiplying power discharging property, secondary lithium ion battery or battery unit using said method |
| CN101364644A (en) * | 2007-08-10 | 2009-02-11 | 深圳市比克电池有限公司 | Lithium battery current collecting body, high capacity cylindrical lithium ionic cell and preparation |
| CN206849947U (en) * | 2017-04-14 | 2018-01-05 | 深圳鑫智美科技有限公司 | Porous, electrically conductive plastic foil collector |
-
2018
- 2018-03-15 CN CN201810214582.1A patent/CN108493393A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1167222A (en) * | 1997-08-22 | 1999-03-09 | Kazuo Tagawa | Current collector for battery and battery using it |
| 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 |
| CN1945878A (en) * | 2006-09-22 | 2007-04-11 | 任晓平 | Method for increasing secondary lithium ion battery volume and multiplying power discharging property, secondary lithium ion battery or battery unit using said method |
| CN101364644A (en) * | 2007-08-10 | 2009-02-11 | 深圳市比克电池有限公司 | Lithium battery current collecting body, high capacity cylindrical lithium ionic cell and preparation |
| CN206849947U (en) * | 2017-04-14 | 2018-01-05 | 深圳鑫智美科技有限公司 | Porous, electrically conductive plastic foil collector |
Non-Patent Citations (1)
| Title |
|---|
| 吴宇平 等编著: "《锂离子电池—应用与实践》", 31 December 2011 * |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180904 |