CN104916872A - Making technology of micro-porous base material battery - Google Patents
Making technology of micro-porous base material battery Download PDFInfo
- Publication number
- CN104916872A CN104916872A CN201510235766.2A CN201510235766A CN104916872A CN 104916872 A CN104916872 A CN 104916872A CN 201510235766 A CN201510235766 A CN 201510235766A CN 104916872 A CN104916872 A CN 104916872A
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- Prior art keywords
- base material
- positive
- battery
- negative
- micro
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Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C13/00—Means for manipulating or holding work, e.g. for separate articles
- B05C13/02—Means for manipulating or holding work, e.g. for separate articles for particular articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/04—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material to opposite sides of the work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
-
- 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
-
- 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
-
- 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
Abstract
The invention discloses a making technology of a micro-porous base material battery. The technology sequentially comprises the following steps: 1, positive electrode batch mixing; 2, negative electrode batch mixing; 3, pore formation; 4, coating; 5, slicing; 6, assembling; and 7, formation. A micro-porous base material is adopted to improve the bonding strength of a slurry and metal foil, a tension adjusting roller is adopted to make the surface of the base material flattened in order to once complete the coating process of the front side and the back side of the base material, and front and back side pulps are bonded reliability through apertures and the base material, so prolongation of the service life of the battery is facilitated, the effects of active substances are effectively performed, and the capacity of the battery is improved; the micro-porous base material has many channels, so electrolyte injection and electrolyte infiltration are convenient, and the conductivity is improved; and the coating thickness of the micro-porous base material increases, so the use amount of the base material and an isolation film is correspondingly reduced, and the making cost of the battery is reduced.
Description
The application is the applying date: on 07 02nd, 2013, application number was: CN201310276453.2, and name is called: the divisional application of the unicoater adopted in a kind of manufacture craft of microporous substrate battery and this technique.
[technical field]
The present invention relates to the technical field of battery production equipment, particularly the technical field of base material unicoater.
[background technology]
The production technology of current lithium ion battery is mainly mixed slurry, coating, film-making, assembling, fluid injection, several main technique such as to change into, wherein coating process mainly utilizes coating machine to be coated on by technological requirement on the two sides of aluminium foil and Copper Foil by the anode and cathode slurry mixed, and removes tablet making technology after drying roll extrusion.Current defect is coating machine coating cannot realize carrying out two-sided to base material while, inefficiency, and need the another side of turn-over to another base material to add man-hour after machining base material one side, upper and lower surface due to base material does not have micropore to be communicated with, after slurry is coated on metal forming, adhesion strength is poor, easily make Paint Falling, the battery capacity made reduces, and has a strong impact on the life-span of battery.
[summary of the invention]
Object of the present invention solves the problems of the prior art exactly, the unicoater adopted in a kind of manufacture craft of microporous substrate battery and this technique is proposed, microporous substrate is adopted to improve the adhesion strength of slurry and metal forming, tension dancer rools is used to keep the surfacing of base material, simultaneously more reliable by hole and base material bonding of positive and negative slurry, is conducive to the useful life extending battery.
For achieving the above object, the present invention proposes a kind of microporous substrate unicoater, comprise microporous substrate unwinding device, first dispense tip, second dispense tip, steel band conveyer belt, baking box, finished rolling device, first axis of rolling and second axis of rolling, described steel band conveyer belt is set on first axis of rolling and second axis of rolling, described first axis of rolling is positioned at the outside of baking box, described second axis of rolling is positioned at the inside of baking box, described first dispense tip is positioned at the top of first axis of rolling, second dispense tip is positioned at the front of first axis of rolling, described microporous substrate unwinding device is positioned at the front of baking box, some feeding rollers are provided with between microporous substrate unwinding device and steel band conveyer belt, described finished rolling device is positioned at the rear of baking box, some feeding rollers are provided with between baking box and finished rolling device.
As preferably, described microporous substrate unwinding device is wound with microporous substrate, and microporous substrate enters baking box through the top of steel band conveyer belt.
As preferably, described first dispense tip is corresponding with the microporous substrate above steel band conveyer belt, and described second dispense tip is corresponding with steel band conveyer belt, achieves and carries out coating to the positive and negative of microporous substrate.
As preferably, the contact-making surface of described steel band conveyer belt and microporous substrate is provided with adherent layer, steel band conveyer belt and microporous substrate can be prevented to be bonded together, improve the crudy of microporous substrate.
As preferably, also comprise the first tension dancer rools and the second tension dancer rools, described first tension dancer rools is positioned at the front of steel band conveyer belt, and described second tension dancer rools is between baking box and finished rolling device, keep microporous substrate surfacing, be conducive to coating and rolling.
For achieving the above object, the invention allows for a kind of manufacture craft of microporous substrate battery, comprise the following steps successively:
A) positive pole batch mixing: adopt cobalt acid lithium, LiMn2O4, ternary material or LiFePO4 are as the active material of positive electrode, adopt carbon black as conductive agent, by active material, conductive agent and adhesive according to after the ratio mixing of 92:3:5, mixed material double planetary mixer is carried out disperseing and mixing.
B) negative pole batch mixing: adopt graphite as negative material, first with pure water, conductive agent is tentatively disperseed, then graphite is mixed with water-based bonding agent, mixed material double planetary mixer is carried out disperseing and mixing.
C) pore-creating: use metal forming borer to carry out micropore manufacture to metal forming, make the surface of metal forming have several three-dimensional micropores, the hair side of half micropore is upwards dug relative to metal forming, and the hair side of second half micropore is dug downwards relative to metal forming.
D) be coated with: the positive pole batch mixing mixed up and negative pole batch mixing are coated with through row, positive pole batch mixing is coated on the positive and negative of positive-pole base material by micro-porous electrode base material coating machine, be coated on the positive and negative of base material of cathode by negative pole batch mixing by micro-porous electrode base material coating machine, the coating of microporous substrate positive and negative is bonded to an entirety by micropore and microporous substrate.
E) film-making: after the positive-pole base material after coating and base material of cathode are sent into baking box oven dry, be cut into some positive plates and some negative plates.
F) assemble: after some positive plates and some negative plates are processed into battery core, battery core is loaded in battery case.
G) change into: inject electrolyte in battery container after, process is changed into battery charging.
Beneficial effect of the present invention: the adhesion strength of the present invention by adopting microporous substrate to improve slurry and metal forming, and tension dancer rools makes substrate surface smooth, the disposable coating process completing base material positive and negative of energy, simultaneously more reliable by hole and base material bonding of positive and negative slurry, be conducive to the useful life extending battery, the effect of the more effective performance active material of energy, the capacity of battery can be improved, microporous substrate there is countless passages, be convenient to the infiltration of fluid injection and electric liquid, improve conductivity, coating thickness increases by microporous substrate, consequently reduce the consumption of base material and barrier film, reduce battery manufacture cost.
Feature of the present invention and advantage will be described in detail by reference to the accompanying drawings by embodiment.
[accompanying drawing explanation]
Fig. 1 is the structural representation of a kind of microporous substrate unicoater of the present invention.
In figure: 1-microporous substrate unwinding device, 2-first dispense tip, 3-second dispense tip, 4-steel band conveyer belt, 5-baking box, 6-finished rolling device, 7-first tension dancer rools, 8-second tension dancer rools, 9-feeding roller, 11-microporous substrate, 12-first axis of rolling, 13-second axis of rolling.
[embodiment]
Consult Fig. 1, a kind of microporous substrate unicoater of the present invention, comprise microporous substrate unwinding device 1, first dispense tip 2, second dispense tip 3, steel band conveyer belt 4, baking box 5, finished rolling device 6, first axis of rolling 12 and second axis of rolling 13, described steel band conveyer belt is set on first axis of rolling 12 and second axis of rolling 13, described first axis of rolling 12 is positioned at the outside of baking box 5, described second axis of rolling 13 is positioned at the inside of baking box 5, described first dispense tip 2 is positioned at the top of first axis of rolling 12, second dispense tip 3 is positioned at the front of first axis of rolling 12, described microporous substrate unwinding device 1 is positioned at the front of baking box 5, some feeding rollers 9 are provided with between microporous substrate unwinding device 1 and steel band conveyer belt 4, described finished rolling device 6 is positioned at the rear of baking box 5, some feeding rollers 9 are provided with between baking box 5 and finished rolling device 6, described microporous substrate unwinding device 1 is wound with microporous substrate 11, microporous substrate 11 enters baking box through the top of steel band conveyer belt 4, described first dispense tip 2 is corresponding with the microporous substrate 11 above steel band conveyer belt 4, described second dispense tip 3 is corresponding with steel band conveyer belt 4, described steel band conveyer belt 4 is provided with adherent layer with the contact-making surface of microporous substrate 11, also comprise the first tension dancer rools 7 and the second tension dancer rools 8, described first tension dancer rools 7 is positioned at the front of steel band conveyer belt 4, described second tension dancer rools 8 is between baking box 5 and finished rolling device 6.
The manufacture craft of microporous substrate battery, comprises the following steps successively:
A) positive pole batch mixing: adopt cobalt acid lithium, LiMn2O4, ternary material or LiFePO4 are as the active material of positive electrode, adopt carbon black as conductive agent, by active material, conductive agent and adhesive according to after the ratio mixing of 92:3:5, mixed material double planetary mixer is carried out disperseing and mixing.
B) negative pole batch mixing: adopt graphite as negative material, first with pure water, conductive agent is tentatively disperseed, then graphite is mixed with water-based bonding agent, mixed material double planetary mixer is carried out disperseing and mixing.
C) pore-creating: use metal forming borer to carry out micropore manufacture to metal forming, make the surface of metal forming have several three-dimensional micropores, the hair side of half micropore is upwards dug relative to metal forming, and the hair side of second half micropore is dug downwards relative to metal forming.
D) be coated with: the positive pole batch mixing mixed up and negative pole batch mixing are diluted through row, positive pole batch mixing is coated on the positive and negative of positive-pole base material by micro-porous electrode base material coating machine, be coated on the positive and negative of base material of cathode by negative pole batch mixing by micro-porous electrode base material coating machine, the coating of microporous substrate positive and negative is bonded to an entirety by micropore and microporous substrate.
E) film-making: after the positive-pole base material after coating and base material of cathode are sent into baking box oven dry, be cut into some positive plates and some negative plates.
F) assemble: after some positive plates and some negative plates are processed into battery core, battery core is loaded in battery case.
G) change into: inject electrolyte in battery container after, process is changed into battery charging.
A kind of microporous substrate unicoater course of work:
A kind of microporous substrate unicoater in the course of the work, micropore base 11 material on microporous substrate unwinding device 1 is delivered on steel band conveyer belt 4 through feeding roller 9 and the first tension dancer rools 7, the front of the first dispense tip 2 pairs of microporous substrates 11 is through row coating, second dispense tip 3 by paint spray on steel band conveyer belt 4, the steel band conveyer belt 4 being sprayed with coating contacts with the reverse side of microporous substrate 11, the reverse side of microporous substrate 11 is coated with coat, then microporous substrate 11 is sent into baking box 5 and is dried by steel band conveyer belt 4, finally carry out rolling from baking box 5 microporous substrate 11 out by finished rolling device 6, if occur lax when microporous substrate 11 enters baking box 5, can be regulated by the first tension dancer rools 7, if occur lax when microporous substrate 11 leaves baking box 5, can be regulated by the second tension dancer rools 8.
Above-described embodiment is to explanation of the present invention, is not limitation of the invention, anyly all belongs to protection scope of the present invention to the scheme after simple transformation of the present invention.
Claims (1)
1. a manufacture craft for microporous substrate battery, comprises the following steps successively:
A) positive pole batch mixing: adopt cobalt acid lithium, LiMn2O4, ternary material or LiFePO4 are as the active material of positive electrode, adopt carbon black as conductive agent, by active material, conductive agent and adhesive according to after the ratio mixing of 92:3:5, mixed material double planetary mixer is carried out dispersion mixing.
B) negative pole batch mixing: adopt graphite as negative material, first with pure water, conductive agent is tentatively disperseed, then graphite is mixed with water-based bonding agent, mixed material double planetary mixer is carried out disperseing and mixing.
C) pore-creating: use metal forming borer to carry out micropore manufacture to metal forming, make the surface of metal forming have several three-dimensional micropores, the hair side of half micropore is upwards dug relative to metal forming, and the hair side of second half micropore is dug downwards relative to metal forming.
D) be coated with: by the positive pole batch mixing that mixes up and negative pole batch mixing, positive pole batch mixing is coated on the positive and negative of positive-pole base material by micro-porous electrode base material coating machine, be coated on the positive and negative of base material of cathode by negative pole batch mixing by micro-porous electrode base material coating machine, the coating of microporous substrate positive and negative is bonded to an entirety by micropore and microporous substrate.
E) film-making: after the positive-pole base material after coating and base material of cathode are sent into baking box oven dry, be cut into some positive plates and some negative plates.
F) assemble: after some positive plates and some negative plates are processed into battery core, battery core is loaded in battery case.
G) change into: inject electrolyte in battery container after, process is changed into battery charging.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310276453.2A CN103357548B (en) | 2013-07-02 | 2013-07-02 | The unicoater adopted in a kind of manufacture craft of microporous substrate battery and this technique |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310276453.2A Division CN103357548B (en) | 2013-07-02 | 2013-07-02 | The unicoater adopted in a kind of manufacture craft of microporous substrate battery and this technique |
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| Publication Number | Publication Date |
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| CN104916872A true CN104916872A (en) | 2015-09-16 |
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| CN201510235766.2A Pending CN104916872A (en) | 2013-07-02 | 2013-07-02 | Making technology of micro-porous base material battery |
| CN201310276453.2A Active CN103357548B (en) | 2013-07-02 | 2013-07-02 | The unicoater adopted in a kind of manufacture craft of microporous substrate battery and this technique |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105499093A (en) * | 2015-11-23 | 2016-04-20 | 国联汽车动力电池研究院有限责任公司 | Coating and drying method for pole belts, pole piece preparation method and pole piece preparation system |
| CN110600673A (en) * | 2019-08-30 | 2019-12-20 | 长沙锂安能电子科技有限公司 | Manufacturing method and manufacturing equipment of double-sided coating integrated three-dimensional base material |
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| CN103567116B (en) * | 2013-11-17 | 2016-03-09 | 深圳市信宇人科技有限公司 | Be suitable for two-sided extrusion coating process and the apparatus for coating of microporous substrate |
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| CN108044242A (en) * | 2017-12-18 | 2018-05-18 | 中国兵器装备集团自动化研究所 | A kind of device for laser machining copper foil hole |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN103357548B (en) | 2016-01-06 |
| CN103357548A (en) | 2013-10-23 |
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Application publication date: 20150916 |