CN110137389A - A kind of outer layer erosion-resisting soft bag lithium ionic cell shell encapsulation preparation method of aluminum-plastic composite membrane - Google Patents
A kind of outer layer erosion-resisting soft bag lithium ionic cell shell encapsulation preparation method of aluminum-plastic composite membrane Download PDFInfo
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- CN110137389A CN110137389A CN201910449176.8A CN201910449176A CN110137389A CN 110137389 A CN110137389 A CN 110137389A CN 201910449176 A CN201910449176 A CN 201910449176A CN 110137389 A CN110137389 A CN 110137389A
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- 239000002131 composite material Substances 0.000 title claims abstract description 71
- 229920003023 plastic Polymers 0.000 title claims abstract description 49
- 239000004033 plastic Substances 0.000 title claims abstract description 49
- 238000002360 preparation method Methods 0.000 title claims abstract description 28
- 239000012528 membrane Substances 0.000 title abstract description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title abstract description 3
- 229910052744 lithium Inorganic materials 0.000 title abstract description 3
- 238000005538 encapsulation Methods 0.000 title abstract 2
- 238000004519 manufacturing process Methods 0.000 claims abstract description 72
- 230000007246 mechanism Effects 0.000 claims description 109
- -1 polyethylene terephthalate Polymers 0.000 claims description 70
- 239000011248 coating agent Substances 0.000 claims description 61
- 238000000576 coating method Methods 0.000 claims description 61
- 239000010410 layer Substances 0.000 claims description 55
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 54
- 229910052782 aluminium Inorganic materials 0.000 claims description 54
- 238000001035 drying Methods 0.000 claims description 54
- 239000011888 foil Substances 0.000 claims description 52
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 37
- 230000007797 corrosion Effects 0.000 claims description 37
- 238000005260 corrosion Methods 0.000 claims description 37
- 229910001416 lithium ion Inorganic materials 0.000 claims description 37
- 238000004806 packaging method and process Methods 0.000 claims description 34
- 239000004743 Polypropylene Substances 0.000 claims description 32
- 229920001155 polypropylene Polymers 0.000 claims description 29
- 150000001875 compounds Chemical class 0.000 claims description 28
- 238000005266 casting Methods 0.000 claims description 23
- 239000000853 adhesive Substances 0.000 claims description 21
- 230000001070 adhesive effect Effects 0.000 claims description 21
- 238000013329 compounding Methods 0.000 claims description 21
- 229920001971 elastomer Polymers 0.000 claims description 21
- 229920001707 polybutylene terephthalate Polymers 0.000 claims description 21
- 239000000839 emulsion Substances 0.000 claims description 20
- 239000008187 granular material Substances 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 19
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 19
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 19
- 238000003756 stirring Methods 0.000 claims description 17
- 239000011347 resin Substances 0.000 claims description 16
- 229920005989 resin Polymers 0.000 claims description 16
- 238000004804 winding Methods 0.000 claims description 15
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims description 13
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims description 13
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims description 13
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 11
- 238000010030 laminating Methods 0.000 claims description 10
- 239000004698 Polyethylene Substances 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 9
- 229920000573 polyethylene Polymers 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 8
- 238000004140 cleaning Methods 0.000 claims description 7
- 239000013527 degreasing agent Substances 0.000 claims description 7
- 238000005237 degreasing agent Methods 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 claims description 7
- 229920002635 polyurethane Polymers 0.000 claims description 7
- 239000004814 polyurethane Substances 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 claims description 7
- 239000012790 adhesive layer Substances 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical class CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 claims description 4
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 4
- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 3
- 239000012948 isocyanate Substances 0.000 claims description 3
- 150000003505 terpenes Chemical class 0.000 claims description 3
- 235000007586 terpenes Nutrition 0.000 claims description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 2
- 229940037003 alum Drugs 0.000 claims description 2
- 239000011247 coating layer Substances 0.000 claims description 2
- 238000002425 crystallisation Methods 0.000 claims description 2
- 230000008025 crystallization Effects 0.000 claims description 2
- 239000008367 deionised water Substances 0.000 claims description 2
- 229910021641 deionized water Inorganic materials 0.000 claims description 2
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims description 2
- 239000011976 maleic acid Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- XRBCRPZXSCBRTK-UHFFFAOYSA-N phosphonous acid Chemical compound OPO XRBCRPZXSCBRTK-UHFFFAOYSA-N 0.000 claims description 2
- 229920005996 polystyrene-poly(ethylene-butylene)-polystyrene Polymers 0.000 claims description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 2
- ZXAUZSQITFJWPS-UHFFFAOYSA-J zirconium(4+);disulfate Chemical compound [Zr+4].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZXAUZSQITFJWPS-UHFFFAOYSA-J 0.000 claims description 2
- 239000003792 electrolyte Substances 0.000 abstract description 10
- 230000032683 aging Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 7
- 239000002994 raw material Substances 0.000 description 6
- 239000013078 crystal Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 150000001336 alkenes Chemical class 0.000 description 4
- 239000000806 elastomer Substances 0.000 description 4
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 3
- 238000005238 degreasing Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 239000005022 packaging material Substances 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- 239000002313 adhesive film Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000009820 dry lamination Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000010345 tape casting Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 1
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000011244 liquid electrolyte Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- 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
- B05D3/002—Pretreatement
-
- 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
-
- 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
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
-
- 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
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
-
- 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
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- 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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Laminated Bodies (AREA)
Abstract
The present invention provides a kind of preparation method of erosion-resisting soft bag lithium ionic cell shell encapsulation aluminum-plastic composite membrane of outer layer.This method is able to use under different battery core producers production environment, even if its appearance receives electrolyte or the pollution of other corrosive liquids, still it is able to maintain the integrality of its structure, improve the yields of battery core producer and the security reliability of finished battery, the ageing-resistant performance for improving aluminum-plastic composite membrane, applying it can be more persistently and safe on battery.
Description
Technical Field
The invention belongs to the technical field of composite membranes, and particularly relates to a preparation method of an aluminum-plastic composite membrane for packaging a soft package lithium ion battery shell, wherein the outer layer of the aluminum-plastic composite membrane is corrosion-resistant.
Background
With the development requirements of mobile or medium-small energy storage devices, especially the application development requirements of power lithium batteries with various appearance states, the technical route of soft package lithium ion batteries comes along. The soft package lithium ion battery is formed by packaging a current collector, a diaphragm and electrolyte by a packaging material which has strong plasticity and certain flexibility in external packaging. The aluminum-plastic composite film used for packaging the soft package lithium ion battery at the present stage can generally meet the packaging and using requirements of the lithium ion battery.
The electrolyte used by the soft package lithium ion battery is mainly a liquid electrolyte using lithium hexafluorophosphate as a main solute and ethylene carbonate, propylene carbonate and diethyl carbonate as solvents, and the lithium hexafluorophosphate can be decomposed into hydrofluoric acid, so that the electrolyte has extremely strong corrosivity and dissolubility.
Due to the extremely rapid development of the domestic battery industry, the number of enterprises is rapidly increased, the production conditions of different battery cell manufacturers are different, particularly the production control levels of the domestic lithium ion battery manufacturers are different, electrolyte can leak to the outer surface of a packaging material during the production of the battery cells, the surface of the material is corroded, and potential safety hazards of the battery are caused. Therefore, a novel soft package lithium ion battery shell packaging material which has good adaptability under different production environments, corrosion resistance of the inner layer and the outer layer, high water oxygen isolation and high ductility is urgently needed.
Disclosure of Invention
The invention aims to solve the technical problem of providing a preparation method of an aluminum-plastic composite film for packaging a soft package lithium ion battery shell, wherein the outer layer of the aluminum-plastic composite film is corrosion-resistant.
In order to solve the technical problems, the invention provides a preparation method of an aluminum-plastic composite film for packaging a soft package lithium ion battery shell, the outer layer of which is corrosion-resistant, which comprises the following steps:
(1) cleaning: selecting a single-light aluminum foil with the thickness of 20-60 mu m, using an alkaline degreasing agent to remove oil, cleaning and drying to obtain a clean aluminum foil, wherein the clean aluminum foil is provided with a first surface and a second surface corresponding to the first surface;
(2) coating a treating agent on the first surface of the clean aluminum foil by using a coating production line, and heating, drying and reacting to obtain the clean aluminum foil with the high-density self-repairing film, wherein the thickness of the high-density self-repairing film is 100nm-1 mu m, and at the moment, the exposed surface of the clean aluminum foil with the high-density self-repairing film is a second surface and a high-density self-repairing film surface corresponding to the second surface, and rolling;
(3) putting a polyurethane adhesive or an acrylate adhesive into a stirring cylinder, adding the modified rosin resin and the modified VAE emulsion into the stirring cylinder, and fully stirring to obtain a first adhesive;
(4) selecting a polyethylene terephthalate film or polybutylene terephthalate film with the thickness of 10-45 microns, wherein the polyethylene terephthalate film or polybutylene terephthalate film is provided with a third surface and a fourth surface corresponding to the third surface, coating the third surface by using a coating production line, and drying to obtain the polyethylene terephthalate film or polybutylene terephthalate film with a tackifying coating on the surface, wherein the exposed surface of the polyethylene terephthalate film or polybutylene terephthalate film with the tackifying coating is the fourth surface and the tackifying coating layer surface corresponding to the fourth surface;
(5) putting the clean aluminum foil with the high-density self-repairing film on a first unreeling mechanism on a dry laminating film integrated production line for unreeling;
(6) placing a modified polypropylene film or a polyethylene film of 5-80 microns on a second unwinding mechanism for unwinding, wherein the modified polypropylene film or the polyethylene film is provided with a fifth surface and a sixth surface corresponding to the fifth surface;
(7) adding modified polypropylene granules into a hopper of a screw extruder, extruding through a T-shaped die head, controlling the extrusion thickness to be between 5 and 80 microns, placing the extruded modified polypropylene granules into the clean aluminum foil with the high-density self-repairing film discharged by the first unwinding mechanism and the modified polypropylene film or the polyethylene film discharged by the second unwinding mechanism, pressing the high-density self-repairing film surface and the fifth surface together through a casting composite mechanism to form a first composite film material, and controlling the crystallization orientation of the first composite film material through a stretching mechanism;
(8) coating the first adhesive on the second surface through a coating mechanism, drying through an oven to obtain a first adhesive layer, putting the polyethylene terephthalate film or polybutylene terephthalate film with the thickness of 10-45 mu m and the tackifying coating on a third unwinding mechanism of a dry-compound production line for unwinding, compounding with a first compound film material with the first adhesive layer through a compounding mechanism, wherein the compounding surface is a first adhesive surface and a tackifying coating surface to form a second compound film material, and transferring the second compound film material to a winding mechanism for winding through the production line;
(9) and placing the second composite film material in a drying room for curing to obtain the aluminum-plastic composite film.
As a preferable scheme of the preparation method of the aluminum-plastic composite film for packaging the outer-layer corrosion-resistant soft-package lithium ion battery shell, the treating agent in the step (2) comprises, by weight, 1.6% of zirconium sulfate, 2.2% of fluoride, 9% of alum, 3% of organic phosphonite, 9% of a propylene-maleic copolymer, and the balance of deionized water.
As a preferable scheme of the preparation method of the outer-layer corrosion-resistant soft-package lithium ion battery shell packaging aluminum-plastic composite film, the production running speed of the coating production line in the step (2) is 10-80 m/min, and the temperature of the heating and drying reaction is 50-210 ℃.
As a preferable scheme of the preparation method of the aluminum-plastic composite film for packaging the outer-layer corrosion-resistant soft package lithium ion battery shell, in the step (3), the mass fraction of the modified rosin resin is 0.2% -2%, the modified rosin resin is selected from a maleated modified rosin resin or a terpene resin modified rosin resin, the mass fraction of the modified VAE emulsion is 0.1% -5%, and the modified VAE emulsion is selected from an isocyanate modified VAE emulsion or a 1, 4-diisocyanate grafted modified VAE emulsion.
As a preferable scheme of the preparation method of the aluminum-plastic composite film for packaging the outer-layer corrosion-resistant soft package lithium ion battery shell, the stirring speed in the step (3) is 100 r/min-300 r/min, and the temperature is 20-35 ℃.
As a preferable scheme of the preparation method of the aluminum-plastic composite film for packaging the outer-layer corrosion-resistant soft-package lithium ion battery shell, in the step (4), the material of the adhesion-promoting coating is modified rubber emulsion, the modified rubber emulsion is selected from any one or more of styrene rubber, modified natural latex or SEBS rubber, and the drying temperature is 60-150 ℃.
As a preferable scheme of the preparation method of the aluminum-plastic composite film for packaging the outer-layer corrosion-resistant soft-package lithium ion battery shell, the modified polypropylene film in the step (6) is a maleic anhydride grafted modified polypropylene film.
As a preferable scheme of the preparation method of the aluminum-plastic composite film for packaging the outer-layer corrosion-resistant soft package lithium ion battery shell, in the step (7), the working temperature of the tape casting composite mechanism is 40-90 ℃, the working temperature of the stretching mechanism is-10-30 ℃, and the stretching tension is 100N-4000N.
As a preferable scheme of the preparation method of the aluminum-plastic composite film for packaging the outer-layer corrosion-resistant soft-package lithium ion battery shell, the drying temperature of the oven in the step (8) is 50-130 ℃, the working temperature of the composite mechanism is 30-120 ℃, the working pressure is 0.1-0.8 Mpa, and the production speed of the whole production line in the step (8) is 8-60 m/min.
As a preferable scheme of the preparation method of the aluminum-plastic composite film for packaging the outer-layer corrosion-resistant soft-package lithium ion battery shell, the curing temperature in the step (9) is 40-80 ℃, and the curing time is 8-170 h.
Compared with the prior art, the preparation method of the aluminum-plastic composite film for packaging the outer-layer corrosion-resistant soft package lithium ion battery shell has the advantages that:
1. the extremely high water oxygen barrier property can be improved;
2. the shape of the battery can be designed with high freedom according to different use requirements;
3. the electrolyte can resist corrosion of the internally packaged electrolyte without structural damage, and the outer layer can resist external corrosion of electrolyte leakage caused by improper control during production and use;
4. the problem of serious degradation of aging performance caused by using a corrosion-resistant material as a raw material is solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein,
FIG. 1 is a process flow diagram of a preparation method of an aluminum-plastic composite film for packaging a soft package lithium ion battery shell with an outer layer corrosion-resistant according to the invention;
FIG. 2 is a schematic structural diagram of an aluminum-plastic composite film prepared by the preparation method of the aluminum-plastic composite film for packaging the outer-layer corrosion-resistant soft package lithium ion battery shell;
wherein: the device comprises a first unwinding mechanism 1, a second unwinding mechanism 2, a tape casting composite mechanism 3, a stretching mechanism 4, a coating mechanism 5, an oven 6, a third unwinding mechanism 7, a composite mechanism 8, a winding mechanism 9, a polyethylene terephthalate film or polybutylene terephthalate film with a tackifying coating A, a first adhesive layer B, a clean aluminum foil C, a high-density self-repairing film D, a modified polypropylene layer E and a modified polypropylene film or a polyethylene film F.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments in order to make the above objects, features and advantages more apparent and understandable.
First, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Next, the present invention is described in detail by using schematic structural diagrams, etc., and for convenience of illustration, when the embodiments of the present invention are described in detail, the schematic diagrams illustrating an aluminum-plastic composite film for packaging a soft package lithium ion battery case with an outer layer being corrosion-resistant will not be partially enlarged according to a general scale, and the schematic diagrams are only examples, and should not limit the scope of protection of the present invention. In addition, the actual fabrication process should include three-dimensional space of length, width and depth.
The invention relates to a novel aluminum-plastic composite film for packaging a soft package lithium ion battery shell with an outer layer corrosion-resistant layer, wherein the specific operation steps of the processing method comprise:
(1) and (3) degreasing and cleaning the single-light aluminum foil with the thickness of 20-60 microns by using an alkaline degreasing agent, and drying to obtain a clean aluminum foil C.
(2) Coating a treating agent on the clean aluminum foil by using a coating production line, heating, drying and reacting to prepare a high-density self-repairing film D with the surface of 100nm-1 mu m to form a C/D layer structure, and rolling the C/D layer structure for later use. The production running speed of the coating production line is 10-80 m/min, and the reaction drying temperature is 50-210 ℃.
(3) Putting the polyurethane adhesive or the acrylate adhesive into a stirring cylinder, adding 0.2-2% of modified rosin resin and 0.1-5% of modified VAE emulsion by mass, fully stirring, controlling the stirring speed at 100-300 r/min and the temperature at 20-35 ℃ to obtain the first adhesive.
(4) Using a coating production line to perform tackifying coating on the surface of a polyethylene terephthalate film (PET) or polybutylene terephthalate film (PBT) with the thickness of 10-45 mu m, wherein the tackifying coating material uses modified rubber emulsion and mainly comprises styrene rubber, modified natural latex or SEBS rubber or a blend of the styrene rubber, the modified natural latex and the SEBS rubber, and drying at the drying temperature of 60-150 ℃ to obtain the layer A structure.
(5) And putting the C/D layer structure on a first unreeling mechanism 1 on a dry laminating film integrated production line for unreeling, and passing through a casting compounding mechanism 3.
(6) And (3) coating the F layer: and a modified polypropylene film (MPP) or a polypropylene film (PP) or a polyethylene film (PE) with the thickness of 5-80 microns is placed on the second unwinding mechanism 2 for unwinding and passes through the casting compound mechanism 3.
(7) Adding the modified polypropylene granules into a hopper of a screw extruder, extruding through a T-shaped die head, controlling the extrusion thickness to be 5-80 mu m, placing the extruded modified polypropylene granules into a C/D layer structure and a second unwinding mechanism 2 to discharge an F layer, pressing the layers together through a casting compounding mechanism 3 to form a C/D/E/F layer structure, wherein the raw material of the E layer is the modified polypropylene granules, and the working temperature of the casting compounding mechanism 3 is controlled to be 40-90 ℃. And the C/D/E/F layer structure after pressing is subjected to crystal orientation control through a drawing mechanism 4, the working temperature of the drawing mechanism is set to be-10-30 ℃, and the drawing tension is set to be 100-4000N. And then through the coating mechanism 5.
(8) The coating mechanism 5 coats the prepared first adhesive on the C/D/E/F layer structure, and then the first adhesive is dried through the oven 6 to form a B layer, wherein the composite structure is a B/C/D/E/F layer structure. The standby layer A structure is placed on a third unreeling mechanism 7 of a dry compound production line for unreeling and is compounded with a B/C/D/E/F layer structure through a compounding mechanism 8, and the compounding surface is a gluing surface of an aluminum foil and a tackifying processing surface of a film. The drying temperature of the oven 6 is 50-130 ℃, the working temperature of the compound mechanism 8 is 30-120 ℃, and the working pressure is 0.1-0.8 Mpa. The compounded A/B/C/D/E/F layer structure is continuously transferred to a winding mechanism 9 for winding through a production line. The production speed of the whole production line is controlled to be 8m/min-60 m/min.
(9) And (3) placing the prepared A/B/C/D/E/F layer structure shown in figure 2 in a drying room for curing at the temperature of 40-80 ℃ for 8-170 h to obtain the outer-layer corrosion-resistant soft-package lithium ion battery shell packaging aluminum-plastic composite film.
For specific embodiments and comparative examples, reference is made to the following comparative examples and examples:
comparative example 1
(1) And (3) degreasing and cleaning the single-light aluminum foil with the thickness of 40 mu m by using an alkaline degreasing agent, and drying for later use.
(2) Coating the aluminum foil after deoiling and drying with a coating production line, preparing a high-density self-repairing film with the surface of 400nm after heating and drying reaction, and rolling for later use. The production running speed of the coating production line is 20m/min, and the reaction drying temperature is 150 ℃.
(3) And putting the aluminum foil with the prepared high-density self-repairing film on a first unwinding mechanism 1 on a dry laminating film integrated production line for unwinding, and passing through a casting compounding mechanism 3.
(4) And placing a maleic anhydride grafted modified polypropylene film (MPP) with the thickness of 40 micrometers on a second unreeling mechanism 2 for unreeling, and passing through a casting compound mechanism 3.
(5) Adding the olefin elastomer blending modified polypropylene granules into a hopper of a screw extruder, extruding through a T-shaped die head, controlling the extrusion thickness to be 10 mu m, placing the extruded granules into a matte surface of an aluminum foil and a corona surface of a raw material discharged by a second unreeling mechanism 2, pressing the granules together through a casting compound mechanism 3, and controlling the working temperature of the casting compound mechanism 3 to be 80 ℃. And the crystal orientation of the laminated composite film is controlled by a stretching mechanism 4, the working temperature of the stretching mechanism is set to-10 ℃, and the stretching tension is set to 2000N. And then through the coating mechanism 5.
(6) The coating mechanism 5 coats the polyurethane adhesive on the other side of the aluminum foil, and then passes through the oven 6 to be dried.
(7) Placing a polybutylene terephthalate film (PBT) on a third unwinding mechanism 7 of a dry lamination production line for unwinding, and laminating with an aluminum foil through a laminating mechanism 8, wherein the laminating surface is a gluing surface of the aluminum foil and the polybutylene terephthalate film (PBT). The drying temperature of the drying oven 6 is 100 ℃, the working temperature of the compound mechanism 8 is 90 ℃, and the working pressure is 0.5 Mpa. The compounded aluminum-plastic composite film is continuously transferred to a winding mechanism 9 for winding through a production line. The production speed of the whole production line is controlled at 30 m/min.
(8) And (3) placing the prepared aluminum-plastic composite film in a drying room for curing, wherein the curing temperature is 60 ℃, and the curing time is 120 hours.
Comparative example 2
(1) And (3) removing oil from the 35-micron single-light aluminum foil by using an alkaline degreasing agent, and drying for later use.
(2) Coating the aluminum foil after deoiling and drying with a coating production line, preparing a high-density self-repairing film with the surface of 200nm after heating and drying reaction, and rolling for later use. The production running speed of the coating production line is 40m/min, and the reaction drying temperature is 100 ℃.
(3) And putting the aluminum foil with the prepared high-density self-repairing film on a first unwinding mechanism 1 on a dry laminating film integrated production line for unwinding, and passing through a casting compounding mechanism.
(4) And (3) putting a polypropylene film (PP) with the thickness of 40 micrometers on the second unreeling mechanism 2 for unreeling, and passing through the casting compound mechanism 3.
(5) Adding olefin elastomer modified polypropylene granules into a hopper of a screw extruder, extruding through a T-shaped die head, controlling the extrusion thickness to be 10 mu m, placing the extruded granules into a matte surface of an aluminum foil and a corona surface of a raw material discharged by a second unwinding mechanism 2, pressing the granules together through a casting compound mechanism 3, and controlling the working temperature of the casting compound mechanism 3 to be 80 ℃. And the crystal orientation of the laminated composite film is controlled by a stretching mechanism 4, the working temperature of the stretching mechanism is set to be-5 ℃, and the stretching tension is set to be 2000N. And then through the coating mechanism 5.
(6) The coating mechanism 5 coats the polyurethane adhesive on the other side of the aluminum foil, and then the aluminum foil is dried by the oven 6. The standby 25 mu m polyethylene terephthalate film (PET) is placed on a third unwinding mechanism 7 of a dry compound production line for unwinding and is compounded with the aluminum foil through a compounding mechanism 8, and the compounding surface is the glue coating surface of the aluminum foil and the tackifying processing surface of the film. The drying temperature of the drying oven 6 is 100 ℃, the working temperature of the compound mechanism 8 is 85 ℃, and the working pressure is 0.6 Mpa. The compounded aluminum-plastic composite film is continuously transferred to a winding mechanism 9 for winding through a production line. The production speed of the whole production line is controlled at 30 m/min.
(7) And (3) placing the prepared aluminum-plastic composite film in a drying room for curing, wherein the curing temperature is 60 ℃, and the curing time is 150 hours.
Example 1
(1) And (3) degreasing and cleaning the single-light aluminum foil with the thickness of 40 mu m by using an alkaline degreasing agent, and drying for later use.
(2) Coating the aluminum foil after deoiling and drying with a coating production line, preparing a high-density self-repairing film with the surface of 400nm after heating and drying reaction, and rolling for later use. The production running speed of the coating production line is 20m/min, and the reaction drying temperature is 150 ℃.
(3) Putting the polyurethane adhesive into a stirring cylinder, adding 1 mass percent of maleic acid alcoholization modified rosin resin and 3 mass percent of isocyanate modified VAE emulsion, fully stirring for later use, wherein the stirring speed is controlled at 200r/min, and the temperature is controlled at 25 ℃.
(4) A coating production line is used for carrying out tackifying coating on the surface of a polybutylene terephthalate (PBT) film with the thickness of 25 mu m, and the tackifying layer material uses modified rubber emulsion and mainly comprises styrene rubber. Drying at 120 deg.C for use.
(5) And putting the aluminum foil with the prepared high-density self-repairing film on a first unwinding mechanism 1 on a dry laminating film integrated production line for unwinding, and passing through a casting compounding mechanism 3.
(6) And placing a maleic anhydride grafted modified polypropylene film (MPP) with the thickness of 40 micrometers on a second unreeling mechanism 2 for unreeling, and passing through a casting compound mechanism 3.
(7) Adding the olefin elastomer blending modified polypropylene granules into a hopper of a screw extruder, extruding through a T-shaped die head, controlling the extrusion thickness to be 10 mu m, placing the extruded granules into a matte surface of an aluminum foil and a corona surface of a raw material discharged by a second unreeling mechanism 2, pressing the granules together through a casting compound mechanism 3, and controlling the working temperature of the casting compound mechanism 3 to be 80 ℃. And the crystal orientation of the laminated composite film is controlled by a stretching mechanism 4, the working temperature of the stretching mechanism is set to-10 ℃, and the stretching tension is set to 2000N. And then through the coating mechanism 5.
(8) The coating mechanism 5 coats the prepared adhesive on the other side of the aluminum foil, and then the aluminum foil is dried by the oven 6. The standby polybutylene terephthalate (PBT) film is placed on a third unwinding mechanism 7 of a dry lamination production line for unwinding and is compounded with the aluminum foil through a compounding mechanism 8, and the compounding surface is a gluing surface of the aluminum foil and a tackifying processing surface of the film. The drying temperature of the drying oven 6 is 100 ℃, the working temperature of the compound mechanism 8 is 90 ℃, and the working pressure is 0.5 Mpa. The compounded aluminum foil-adhesive-film is continuously transferred to a winding mechanism 9 for winding through a production line. The production speed of the whole production line is controlled at 30 m/min.
(9) And (3) placing the prepared aluminum-plastic composite film in a drying room for curing, wherein the curing temperature is 60 ℃, and the curing time is 120 hours.
Example 2
(1) And (3) removing oil from the 35-micron single-light aluminum foil by using an alkaline degreasing agent, and drying for later use.
(2) Coating the aluminum foil after deoiling and drying with a coating production line, preparing a high-density self-repairing film with the surface of 200nm after heating and drying reaction, and rolling for later use. The production running speed of the coating production line is 40m/min, and the reaction drying temperature is 100 ℃.
(3) Putting the polyurethane adhesive into a stirring cylinder, adding 1 mass percent of terpene resin modified rosin resin and 4 mass percent of 1, 4-diisocyanate graft modified VAE emulsion, fully stirring for later use, wherein the stirring speed is controlled at 100r/min, and the temperature is controlled at 25 ℃.
(4) A coating production line is used for carrying out tackifying coating on the surface of a 25-micron polyethylene terephthalate (PET) film, and the tackifying layer material uses modified rubber emulsion and mainly comprises styrene rubber. Drying for later use at the drying temperature of 110 ℃.
(5) And putting the aluminum foil with the prepared high-density self-repairing film on a first unwinding mechanism 1 on a dry laminating film integrated production line for unwinding, and passing through a casting compounding mechanism.
(6) And (3) putting a polypropylene film (PP) with the thickness of 40 micrometers on the second unreeling mechanism 2 for unreeling, and passing through the casting compound mechanism 3.
(7) Adding olefin elastomer modified polypropylene granules into a hopper of a screw extruder, extruding through a T-shaped die head, controlling the extrusion thickness to be 10 mu m, placing the extruded granules into a matte surface of an aluminum foil and a corona surface of a raw material discharged by a second unwinding mechanism 2, pressing the granules together through a casting compound mechanism 3, and controlling the working temperature of the casting compound mechanism 3 to be 80 ℃. And the crystal orientation of the laminated composite film is controlled by a stretching mechanism 4, the working temperature of the stretching mechanism is set to be-5 ℃, and the stretching tension is set to be 2000N. And then through the coating mechanism 5.
(8) The coating mechanism 5 coats the prepared adhesive on the other side of the aluminum foil, and then the aluminum foil is dried by the oven 6. The standby 25 mu m polyethylene terephthalate film (PET) is placed on a third unwinding mechanism 7 of a dry compound production line for unwinding and is compounded with the aluminum foil through a compounding mechanism 8, and the compounding surface is the glue coating surface of the aluminum foil and the tackifying processing surface of the film. The drying temperature of the drying oven 6 is 100 ℃, the working temperature of the compound mechanism 8 is 85 ℃, and the working pressure is 0.6 Mpa. The compounded aluminum foil-adhesive-film is continuously transferred to a winding mechanism 9 for winding through a production line. The production speed of the whole production line is controlled at 30 m/min.
(9) And (3) placing the prepared aluminum-plastic composite film in a drying room for curing, wherein the curing temperature is 60 ℃, and the curing time is 150 hours.
The test results of the comparative example and the example are shown in the following table 1.
From the data in table 1, the comparison between the commercial aluminum-plastic composite films in examples 1 and 2 and comparative examples 1 and 2 shows that the production yield of the aluminum-plastic composite film is counted by the downstream manufacturer to obtain feedback data, the product rejection rate caused by surface corrosion is mainly counted, the data surface is obtained, and after the corrosion-resistant aluminum-plastic composite film is used, the production yield is obviously improved, the use cost is saved, and the safety risk of the product is reduced; the corrosion duration of the electrolyte is obviously prolonged, which shows that the product can be used in a harsher use environment; the structural damage degree of the embodiments 1 and 2 is obviously better than that of the commercial products and comparative examples, and the aging test shows that the perfectness rate of the product after the product is used for a long time in the manufacture of the battery and coping with the humidity change and the temperature change is improved, the service life of the battery is prolonged, and the safety guarantee is also improved; the improvement of the puncture strength indicates that the shock resistance of the product is improved, and the safety performance of the battery is improved after the battery is manufactured; and the extensibility is still maintained.
Therefore, the outer-layer corrosion-resistant aluminum-plastic composite film for packaging the soft package lithium ion battery shell can be used in the production environments of different battery cell manufacturers, the structural integrity of the composite film can be still maintained even if the outer surface of the composite film is polluted by electrolyte or other corrosive liquids, the yield of the battery cell manufacturers and the safety and reliability of finished batteries are improved, the aging resistance of the aluminum-plastic composite film is improved, and the composite film can be applied to the batteries more durably and safely.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (10)
1. A preparation method of an outer-layer corrosion-resistant aluminum-plastic composite film for packaging a soft package lithium ion battery shell is characterized by comprising the following steps:
(1) cleaning: selecting a single-light aluminum foil with the thickness of 20-60 mu m, using an alkaline degreasing agent to remove oil, cleaning and drying to obtain a clean aluminum foil, wherein the clean aluminum foil is provided with a first surface and a second surface corresponding to the first surface;
(2) coating a treating agent on the first surface of the clean aluminum foil by using a coating production line, and heating, drying and reacting to obtain the clean aluminum foil with the high-density self-repairing film, wherein the thickness of the high-density self-repairing film is 100nm-1 mu m, and at the moment, the exposed surface of the clean aluminum foil with the high-density self-repairing film is a second surface and a high-density self-repairing film surface corresponding to the second surface, and rolling;
(3) putting a polyurethane adhesive or an acrylate adhesive into a stirring cylinder, adding the modified rosin resin and the modified VAE emulsion into the stirring cylinder, and fully stirring to obtain a first adhesive;
(4) selecting a polyethylene terephthalate film or polybutylene terephthalate film with the thickness of 10-45 microns, wherein the polyethylene terephthalate film or polybutylene terephthalate film is provided with a third surface and a fourth surface corresponding to the third surface, coating the third surface by using a coating production line, and drying to obtain the polyethylene terephthalate film or polybutylene terephthalate film with a tackifying coating on the surface, wherein the exposed surface of the polyethylene terephthalate film or polybutylene terephthalate film with the tackifying coating is the fourth surface and the tackifying coating layer surface corresponding to the fourth surface;
(5) putting the clean aluminum foil with the high-density self-repairing film on a first unreeling mechanism on a dry laminating film integrated production line for unreeling;
(6) placing a modified polypropylene film or a polyethylene film of 5-80 microns on a second unwinding mechanism for unwinding, wherein the modified polypropylene film or the polyethylene film is provided with a fifth surface and a sixth surface corresponding to the fifth surface;
(7) adding modified polypropylene granules into a hopper of a screw extruder, extruding through a T-shaped die head, controlling the extrusion thickness to be between 5 and 80 microns, placing the extruded modified polypropylene granules into the clean aluminum foil with the high-density self-repairing film discharged by the first unwinding mechanism and the modified polypropylene film or the polyethylene film discharged by the second unwinding mechanism, pressing the high-density self-repairing film surface and the fifth surface together through a casting composite mechanism to form a first composite film material, and controlling the crystallization orientation of the first composite film material through a stretching mechanism;
(8) coating the first adhesive on the second surface through a coating mechanism, drying through an oven to obtain a first adhesive layer, putting the polyethylene terephthalate film or polybutylene terephthalate film with the thickness of 10-45 mu m and the tackifying coating on a third unwinding mechanism of a dry-compound production line for unwinding, compounding with a first compound film material with the first adhesive layer through a compounding mechanism, wherein the compounding surface is a first adhesive surface and a tackifying coating surface to form a second compound film material, and transferring the second compound film material to a winding mechanism for winding through the production line;
(9) and placing the second composite film material in a drying room for curing to obtain the aluminum-plastic composite film.
2. The preparation method of the aluminum-plastic composite film for packaging the outer-layer corrosion-resistant soft-package lithium ion battery shell according to claim 1, characterized by comprising the following steps: the treating agent in the step (2) comprises, by weight, 1.6% of zirconium sulfate, 2.2% of fluoride, 9% of alum, 3% of organic phosphonite, 9% of a propylene-maleic copolymer and the balance of deionized water.
3. The preparation method of the aluminum-plastic composite film for packaging the outer-layer corrosion-resistant soft-package lithium ion battery shell according to claim 1, characterized by comprising the following steps: the production running speed of the coating production line in the step (2) is 10-80 m/min, and the temperature of the heating and drying reaction is 50-210 ℃.
4. The preparation method of the aluminum-plastic composite film for packaging the outer-layer corrosion-resistant soft-package lithium ion battery shell according to claim 1, characterized by comprising the following steps: the mass fraction of the modified rosin resin in the step (3) is 0.2% -2%, the modified rosin resin is selected from maleic acid alcoholization modified rosin resin or terpene resin modified rosin resin, the mass fraction of the modified VAE emulsion is 0.1% -5%, and the modified VAE emulsion is selected from isocyanate modified VAE emulsion or 1, 4-diisocyanate grafting modified VAE emulsion.
5. The preparation method of the aluminum-plastic composite film for packaging the outer-layer corrosion-resistant soft-package lithium ion battery shell according to claim 1, characterized by comprising the following steps: the rotating speed of the stirring in the step (3) is 100 r/min-300 r/min, and the temperature is 20-35 ℃.
6. The preparation method of the aluminum-plastic composite film for packaging the outer-layer corrosion-resistant soft-package lithium ion battery shell according to claim 1, characterized by comprising the following steps: the material of the tackifying coating in the step (4) is modified rubber emulsion, the modified rubber emulsion is selected from any one or more blends of styrene rubber, modified natural latex or SEBS rubber, and the drying temperature is 60-150 ℃.
7. The preparation method of the aluminum-plastic composite film for packaging the outer-layer corrosion-resistant soft-package lithium ion battery shell according to claim 1, characterized by comprising the following steps: the modified polypropylene film in the step (6) is a maleic anhydride grafted modified polypropylene film.
8. The preparation method of the aluminum-plastic composite film for packaging the outer-layer corrosion-resistant soft-package lithium ion battery shell according to claim 1, characterized by comprising the following steps: in the step (7), the working temperature of the casting compound mechanism is 40-90 ℃, the working temperature of the stretching mechanism is-10-30 ℃, and the stretching tension is 100-4000N.
9. The preparation method of the aluminum-plastic composite film for packaging the outer-layer corrosion-resistant soft-package lithium ion battery shell according to claim 1, characterized by comprising the following steps: in the step (8), the drying temperature of the oven is 50-130 ℃, the working temperature of the composite mechanism is 30-120 ℃, the working pressure is 0.1-0.8 Mpa, and the production speed of the whole production line in the step (8) is 8-60 m/min.
10. The preparation method of the aluminum-plastic composite film for packaging the outer-layer corrosion-resistant soft-package lithium ion battery shell according to claim 1, characterized by comprising the following steps: in the step (9), the curing temperature is 40-80 ℃, and the curing time is 8-170 h.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110920034A (en) * | 2019-10-24 | 2020-03-27 | 龙岩高格微扣科技有限公司 | Split type aluminum plastic film processing method |
| CN111152520A (en) * | 2019-12-26 | 2020-05-15 | 东莞维科电池有限公司 | Lithium ion battery packaging film and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102343693A (en) * | 2010-07-30 | 2012-02-08 | 藤森工业株式会社 | Laminating member for battery package |
| CN103534085A (en) * | 2011-03-29 | 2014-01-22 | 昭和电工包装株式会社 | Molding packaging material and battery case |
| CN104152907A (en) * | 2014-07-21 | 2014-11-19 | 烟台恒迪克能源科技有限公司 | Water-based film-forming antirust agent for aluminum surfaces |
| CN108481863A (en) * | 2018-03-16 | 2018-09-04 | 常州斯威克光伏新材料有限公司 | A kind of preparation method of aluminum-plastic composite membrane |
| CN108493359A (en) * | 2018-03-16 | 2018-09-04 | 常州斯威克光伏新材料有限公司 | A kind of power lithium-ion battery aluminum-plastic composite membrane |
| CN108582807A (en) * | 2018-03-24 | 2018-09-28 | 常州斯威克光伏新材料有限公司 | A kind of preparation method of soft package lithium battery shell encapsulation aluminum-plastic composite membrane |
-
2019
- 2019-05-28 CN CN201910449176.8A patent/CN110137389B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102343693A (en) * | 2010-07-30 | 2012-02-08 | 藤森工业株式会社 | Laminating member for battery package |
| CN103534085A (en) * | 2011-03-29 | 2014-01-22 | 昭和电工包装株式会社 | Molding packaging material and battery case |
| CN104152907A (en) * | 2014-07-21 | 2014-11-19 | 烟台恒迪克能源科技有限公司 | Water-based film-forming antirust agent for aluminum surfaces |
| CN108481863A (en) * | 2018-03-16 | 2018-09-04 | 常州斯威克光伏新材料有限公司 | A kind of preparation method of aluminum-plastic composite membrane |
| CN108493359A (en) * | 2018-03-16 | 2018-09-04 | 常州斯威克光伏新材料有限公司 | A kind of power lithium-ion battery aluminum-plastic composite membrane |
| CN108582807A (en) * | 2018-03-24 | 2018-09-28 | 常州斯威克光伏新材料有限公司 | A kind of preparation method of soft package lithium battery shell encapsulation aluminum-plastic composite membrane |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110920034A (en) * | 2019-10-24 | 2020-03-27 | 龙岩高格微扣科技有限公司 | Split type aluminum plastic film processing method |
| CN111152520A (en) * | 2019-12-26 | 2020-05-15 | 东莞维科电池有限公司 | Lithium ion battery packaging film and preparation method thereof |
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