CN108493393A - A kind of new coating process - Google Patents

A kind of new coating process Download PDF

Info

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
Application number
CN201810214582.1A
Other languages
Chinese (zh)
Inventor
朱传钦
周显茂
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Weiduli New Energy Co Ltd
CHONGQING ZIJIAN ELECTRONICS CO LTD
Original Assignee
Guangdong Weiduli New Energy Co Ltd
CHONGQING ZIJIAN ELECTRONICS CO LTD
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Guangdong Weiduli New Energy Co Ltd, CHONGQING ZIJIAN ELECTRONICS CO LTD filed Critical Guangdong Weiduli New Energy Co Ltd
Priority to CN201810214582.1A priority Critical patent/CN108493393A/en
Publication of CN108493393A publication Critical patent/CN108493393A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/02Electrodes composed of, or comprising, active material
    • H01M4/04Processes of manufacture in general
    • H01M4/0402Methods of deposition of the material
    • H01M4/0404Methods of deposition of the material by coating on electrode collectors
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/052Li-accumulators
    • H01M10/0525Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/02Electrodes composed of, or comprising, active material
    • H01M4/13Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/139Processes of manufacture
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/02Electrodes composed of, or comprising, active material
    • H01M4/64Carriers or collectors
    • H01M4/70Carriers or collectors characterised by shape or form
    • H01M4/80Porous plates, e.g. sintered carriers
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy 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

A kind of new coating process
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.
CN201810214582.1A 2018-03-15 2018-03-15 A kind of new coating process Pending CN108493393A (en)

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)

* Cited by examiner, † Cited by third party
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Title
吴宇平 等编著: "《锂离子电池—应用与实践》", 31 December 2011 *

Similar Documents

Publication Publication Date Title
CN111261948B (en) Cylindrical lithium slurry battery and preparation method thereof
CN100553024C (en) The manufacture method of lithium rechargeable battery
TW431001B (en) Nonaqueous electrolytic secondary battery and manufacture method thereof
KR20180084236A (en) All solid state battery having LATP-containing cathode electrode composite and manufacturing method the same
WO2008126538A1 (en) Wound type electrode battery, and its manufacturing method
CN107394209A (en) A kind of based lithium-ion battery positive plate and its manufacture method
CN105977507A (en) Cylindrical primary lithium battery and preparation method thereof
CN205810932U (en) There is the lithium ion battery of spiral helicine winding arrangement
CN102437304A (en) Diaphragm and method for preparing composite electrode couple by utilizing diaphragm
CN104037458A (en) Manufacturing method of lithium ion energy storage device
CN109494413B (en) Soft package lithium ion battery and preparation method thereof
CN101546649A (en) Manufacturing method of electrode, electric storage device, and intermediate laminate member
CN113889659A (en) Battery with a battery cell
US2684989A (en) Zinc-silver peroxide dunk-pile battery
KR20160007362A (en) High performance all solid lithium sulfur battery with fast lithium ion conduction
US2987567A (en) Dry-charged negative electrode
CN102122725B (en) Lithium-iron disulfide battery
CN110311089A (en) A kind for the treatment of process for preventing electrodes of lithium-ion batteries from losing powder in process
CN108493393A (en) A kind of new coating process
CN102195096B (en) Winding rectangular lithium ion battery and anode strip thereof
CN109888150B (en) Lithium battery separator, wound product and wound lithium battery
CN115360477B (en) Separator and battery
CN107680819B (en) A kind of lithium-ion capacitor
CN103247818A (en) Flexible-packaging laminated lithium iron phosphate cell with high specific energy and manufacturing method thereof
CN206022533U (en) Potential energy-conservation lithium battery

Legal Events

Date Code Title Description
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