CN111540848A - Lithium ion battery aluminum plastic film and preparation method thereof - Google Patents
Lithium ion battery aluminum plastic film and preparation method thereof Download PDFInfo
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- CN111540848A CN111540848A CN202010408354.5A CN202010408354A CN111540848A CN 111540848 A CN111540848 A CN 111540848A CN 202010408354 A CN202010408354 A CN 202010408354A CN 111540848 A CN111540848 A CN 111540848A
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- plastic film
- aluminum
- lithium ion
- water absorption
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 69
- 239000002985 plastic film Substances 0.000 title claims abstract description 69
- 229920006255 plastic film Polymers 0.000 title claims abstract description 69
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 67
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title abstract description 13
- 239000010410 layer Substances 0.000 claims abstract description 203
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 91
- 238000010521 absorption reaction Methods 0.000 claims abstract description 74
- 229920000642 polymer Polymers 0.000 claims abstract description 71
- 239000012793 heat-sealing layer Substances 0.000 claims abstract description 24
- 239000004677 Nylon Substances 0.000 claims abstract description 15
- 229920001778 nylon Polymers 0.000 claims abstract description 15
- 239000002250 absorbent Substances 0.000 claims abstract description 14
- 230000002745 absorbent Effects 0.000 claims abstract description 9
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 41
- 239000011230 binding agent Substances 0.000 claims description 17
- 238000005507 spraying Methods 0.000 claims description 16
- 239000000155 melt Substances 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 13
- 239000000853 adhesive Substances 0.000 claims description 12
- 230000001070 adhesive effect Effects 0.000 claims description 12
- 239000006258 conductive agent Substances 0.000 claims description 12
- 230000005684 electric field Effects 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 229920002635 polyurethane Polymers 0.000 claims description 10
- 239000004814 polyurethane Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 238000013329 compounding Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical group NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 claims description 4
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 4
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical group C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 claims description 4
- 239000004593 Epoxy Substances 0.000 claims description 3
- 239000004831 Hot glue Substances 0.000 claims description 3
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Chemical group CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 claims description 2
- 229920002472 Starch Polymers 0.000 claims description 2
- FZWLAAWBMGSTSO-UHFFFAOYSA-N Thiazole Chemical group C1=CSC=N1 FZWLAAWBMGSTSO-UHFFFAOYSA-N 0.000 claims description 2
- 229920002678 cellulose Polymers 0.000 claims description 2
- 239000001913 cellulose Substances 0.000 claims description 2
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Chemical group CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims description 2
- 239000002608 ionic liquid Substances 0.000 claims description 2
- 229920002401 polyacrylamide Polymers 0.000 claims description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 2
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims description 2
- 125000001453 quaternary ammonium group Chemical group 0.000 claims description 2
- 239000008107 starch Substances 0.000 claims description 2
- 235000019698 starch Nutrition 0.000 claims description 2
- 125000005496 phosphonium group Chemical group 0.000 claims 1
- 230000007797 corrosion Effects 0.000 abstract description 16
- 238000005260 corrosion Methods 0.000 abstract description 16
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052744 lithium Inorganic materials 0.000 abstract description 5
- 210000001787 dendrite Anatomy 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 230000014759 maintenance of location Effects 0.000 abstract description 2
- 230000004888 barrier function Effects 0.000 description 16
- 239000003792 electrolyte Substances 0.000 description 15
- 239000000463 material Substances 0.000 description 14
- 239000012790 adhesive layer Substances 0.000 description 9
- 239000007789 gas Substances 0.000 description 8
- 230000008961 swelling Effects 0.000 description 7
- -1 polypropylene Polymers 0.000 description 6
- 239000005030 aluminium foil Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- NJMWOUFKYKNWDW-UHFFFAOYSA-N 1-ethyl-3-methylimidazolium Chemical compound CCN1C=C[N+](C)=C1 NJMWOUFKYKNWDW-UHFFFAOYSA-N 0.000 description 3
- 239000001110 calcium chloride Substances 0.000 description 3
- 229910001628 calcium chloride Inorganic materials 0.000 description 3
- 210000004027 cell Anatomy 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002105 nanoparticle Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 206010016766 flatulence Diseases 0.000 description 2
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910003002 lithium salt Inorganic materials 0.000 description 2
- 159000000002 lithium salts Chemical class 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 229910013872 LiPF Inorganic materials 0.000 description 1
- 101150058243 Lipf gene Proteins 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical group [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229920001222 biopolymer Polymers 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002052 molecular layer Substances 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0261—Polyamide fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
- B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/308—Heat stability
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/726—Permeability to liquids, absorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
- B32B2457/10—Batteries
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- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Secondary Cells (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention belongs to the technical field of battery production, and particularly relates to a battery aluminum-plastic film and a preparation method of the battery aluminum-plastic film. The lithium ion battery aluminum-plastic film provided by the invention is characterized by comprising an outer nylon layer, a first bonding layer, an outer super absorbent nano polymer layer, an intermediate aluminum layer, a second bonding layer, an inner heat sealing layer and an inner super absorbent nano polymer layer from outside to inside in sequence. The invention has the advantages that (1) the water is blocked or reduced from the internal and external environments of the battery, thereby improving the safety; (2) the adopted high water absorption nano polymer layer has good water absorption and retention performance, high water absorption speed and high stability, and has good flame retardance after water absorption; (3) the cycle performance of the battery is improved; the corrosion to the current collector can be reduced, the possibility of severe reaction of lithium dendrites and water is reduced, and the risk of safety accidents is reduced.
Description
Technical Field
The invention belongs to the technical field of battery production, and particularly relates to a battery aluminum-plastic film and a preparation method of the battery aluminum-plastic film.
Background
Lithium ion batteries are very sensitive to moisture, so the moisture content needs to be strictly controlled in the production and manufacturing processes of the lithium ion batteries. Trace water in the battery is beneficial to the formation and stability of SEI, but when excessive water exists, on one hand, the water reacts with lithium salt in the electrolyte to consume the lithium salt, and simultaneously, a large amount of gas is generated, so that the gas generated by the battery is expanded, and the battery fails; on the other hand, moisture can cause corrosion to positive and negative current collectors, and meanwhile, moisture is not beneficial to negative film forming and stability, when lithium dendrite is separated out on the surface of a negative electrode, lithium and water react violently, a large amount of heat is generated, and safety accidents are caused. In short, excessive moisture causes side reactions inside the battery, increases the internal resistance of the battery, aggravates polarization, reduces the capacity and cycle performance of the battery, and causes safety problems.
The water in the battery is derived from the water of the battery material, such as the water of the anode, the cathode, the electrolyte, the diaphragm and other components, and is caused by the non-strict environmental indexes of the operation processes such as pole piece baking, liquid injection and the like in the production process. The soft-package battery packaging effect is not good, and external moisture also can get into inside the battery. The excessive water content in the battery can cause adverse effects on the capacity, internal resistance, cycle performance and safety performance of the battery, so that the control of the water content of the battery is very important.
As for the aluminum plastic film of the lithium ion battery, the following patent documents are disclosed:
CN104966800A discloses lithium cell composite packaging functional plastic-aluminum membrane, including modified polypropylene layer, nanoparticle layer, first binder layer, fluorocarbon dope layer, aluminium foil layer, second binder layer, nylon layer, the plastic-aluminum membrane is by interior to outer range upon range of in proper order modified polypropylene layer, nanoparticle layer, first binder layer, fluorocarbon dope layer, aluminium foil layer, second binder layer, nylon layer. The nano particle layer with strong water absorption is added in the documents, so that water vapor can be prevented from entering the electrolyte to generate corrosive acid such as hydrofluoric acid and other gases, and the barrier property of the aluminum plastic film is improved. However, in the above technical solution, since the added substances such as nano-alumina and nano-calcium chloride contain metal elements, there is a risk of causing a short circuit of the battery.
CN109986850A discloses an aluminum-plastic film, its characterized in that, including protective layer, first tie coat, high temperature resistant layer, second tie coat, aluminium foil layer, third tie coat and heat-seal layer, first tie coat is between protective layer and high temperature resistant layer, the second tie coat is between high temperature resistant layer and aluminium foil layer, the third tie coat is between aluminium foil layer and heat-seal layer.
The solutions in the above documents improve the high temperature resistance, corrosion resistance and scratch resistance of the aluminum plastic film of the lithium ion battery, but do not provide effective solutions to the problem of removing internal moisture in the battery.
In the technical scheme disclosed in the above-mentioned document, the lithium ion battery has irreversibility in absorbing moisture, and the material is extruded or heated after absorbing moisture, and has a risk of moisture returning to the battery;
in addition, the above documents do not consider the flame retardancy of the material and the risk of thermal runaway, which is likely to lead to the spread of safety accidents.
Therefore, it is necessary to improve the above technical defects, and invent a functional aluminum-plastic film for lithium ion battery, which does not contain nano-calcium chloride and other substances, contains metal elements to avoid short circuit of the battery, and can solve the problems of safety, corrosiveness and the like of the battery material caused by external and internal moisture.
Disclosure of Invention
In order to solve the technical problems, the invention provides a functional aluminum-plastic film of a lithium ion battery and a preparation method thereof, which aim to solve the problem that the moisture content of the battery exceeds the standard in the prior art, prevent the phenomena of battery capacity, internal resistance, circulation, safety performance deterioration and the like caused by the exceeding of the moisture, and enhance the barrier property, corrosion resistance, high-temperature stability and heat sealing property of the aluminum-plastic film.
The invention provides a lithium ion battery aluminum-plastic film, which is formed by compounding a high water absorption nano polymer on the surface of an aluminum layer or a heat seal layer to form a multi-layer compounded functional aluminum-plastic film. The battery aluminum-plastic film provided by the invention sequentially comprises an outer nylon layer, a first bonding layer, an outer super absorbent nano polymer layer, a middle aluminum layer, a second bonding layer, an inner heat sealing layer and an inner super absorbent nano polymer layer from outside to inside.
The outer high water absorption nanometer polymer layer and the inner high water absorption nanometer polymer layer are both prepared by high water absorption nanometer polymers;
the lithium ion battery aluminum plastic film provided by the invention is a multilayer flexible film.
The high water absorption nanometer polymer is at least one selected from starch polymer, cellulose polymer, polyacrylonitrile polymer, polyacrylamide polymer, polyvinyl alcohol polymer and polyacrylic polymer.
The fiber diameter of the outer high water absorption nanometer polymer layer/the inner high water absorption nanometer polymer layer is 10-100 nm.
The thickness of the outer layer high water absorption nanometer polymer layer/the inner layer high water absorption nanometer polymer layer is 50-500 nm.
The preparation method of the aluminum-plastic film of the lithium ion battery comprises the following steps:
1) uniformly mixing the adhesive, the conductive agent and the high-water-absorptivity nano polymer, and heating until the adhesive and the high-water-absorptivity nano polymer are molten to obtain a melt;
2) flatly placing the aluminum layer on a collecting plate;
3) extruding the melt in the step 1) out of a needle head of an injection pump by air flow pressurization to form a Taylor cone, and spraying the Taylor cone to the outer surface of the aluminum layer in the step 2) under a high-voltage electric field to form an outer-layer super absorbent nano polymer spraying flow;
4) after spraying is finished, obtaining an outer high water absorption nano polymer layer;
5) directly pressurizing or heating and compounding the nylon layer, the first bonding layer, the outer high-water-absorption nano polymer layer, the middle aluminum layer, the second bonding layer and the inner heat sealing layer in the following sequence;
6) after cooling, placing the aluminum-plastic film obtained in the step 5) on a collecting plate, wherein the inner heat sealing layer faces upwards;
7) and repeating the step 1), extruding the melt out of a needle head of the injection pump through air flow pressurization to form a Taylor cone, forming an inner-layer high-water-absorption nano polymer jet flow under a high-voltage electric field, jetting the inner-layer high-water-absorption nano polymer jet flow onto an inner-layer heat sealing layer, and obtaining the lithium ion battery aluminum plastic film after jetting is finished.
Preferably, the conductive agent in 1) is at least one selected from imidazole, pyridine, quaternary ammonium, quaternary phosphorus, pyrrole, thiazole and guanidine ionic liquid;
the addition amount of the conductive agent is 0.5-10 wt% of the aluminum plastic film of the battery. And adding a conductive agent, so that the mixed molten liquid forms a nano polymer jet flow under the action of an electric field under a high-voltage electric field.
1) The medium adhesive is at least one selected from epoxy polymer, polyurethane and hot melt adhesive.
The addition amount of the adhesive is controlled to be 0.3-0.5 wt% of the aluminum plastic film of the battery, and the adhesive is used for enhancing the adhesive strength between the conductive agent and the high-water-absorption nano polymer.
1) Heating at 310-350 ℃;
preferably, in 1), the mass ratio of the binder, the conductive agent and the high water absorption nano polymer is as follows: the mass ratio is 0.5-3: 0.5-3: 96-100 parts of;
preferably, in 1), the mass ratio of the binder, the conductive agent and the high water absorption nano polymer is as follows: the mass ratio is 1: 1: 98, respectively;
preferably, the heating temperature in the step 5) is 150-1000 ℃.
The invention has the beneficial effects that:
(1) the moisture is blocked or reduced from the internal and external environments of the battery at the same time, and the safety is improved;
according to the lithium ion battery aluminum plastic film provided by the invention, the inner high water absorption nanometer polymer layer and the outer high water absorption nanometer polymer layer are adopted, so that moisture can be rapidly absorbed from the environment, the moisture in the external environment is effectively prevented from entering the battery, the internal resistance of the battery is prevented from being increased, the capacity, the circulation and the safety performance are prevented from being reduced, the redundant moisture in the battery can be absorbed, the decomposition of electrolyte caused by excessive moisture content in the battery is prevented, the capacity of the battery is reduced, and the swelling of the battery due to the generation of gas is prevented;
(2) the high water absorption nano polymer layer has good water absorption and retention performance, high water absorption speed and high stability, and has good flame retardance after absorbing water;
the high-water-absorptivity nano polymer layer adopted by the invention contains high-water-absorptivity groups, also has a three-dimensional space network structure with a certain cross-linking degree, has high adsorption speed on water, forms water-containing gel after adsorption, has good water retention capacity, can not extrude the adsorbed water even in a pressure or heating state, has good flame retardance, effectively forms a flame-retardant barrier between a thermal runaway battery and an adjacent battery when the thermal runaway of the battery occurs, delays the transfer of the thermal runaway to the adjacent battery, and reduces the risk of safety accident expansion; meanwhile, the high water absorption nano polymer is good in acid and alkali corrosion resistance, has a protection effect on the aluminum-plastic film, prevents the electrolyte and corrosive gas from corroding the aluminum-plastic film, improves the corrosion resistance of the aluminum-plastic film, and has high temperature stability;
(3) the water-absorbing nano polymer layer adopted by the invention is also beneficial to the formation of an SEI film which is uniform, stable and low in internal resistance, and the cycle performance of the battery is improved; in addition, the corrosion to the current collector can be reduced, the possibility of severe reaction of lithium dendrites and water is reduced, and the risk of safety accidents is reduced.
In addition, as the lithium ion battery aluminum-plastic film does not contain metal elements by adding substances such as nano-scale aluminum oxide, nano-scale calcium chloride and the like CN104966800A in the background technology, the risk of causing short circuit of the battery is avoided;
compared with patent document CN109986850A in the background art, the high water absorption nano material has good flame retardance, when the battery is in thermal runaway, the flame retardant barrier between the thermal runaway battery and the adjacent battery is effectively formed, the thermal runaway is delayed from being transferred to the adjacent battery, and the thermal runaway of the short-circuit condition of the battery, which is not solved by the risk of safety accident expansion, is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a functional aluminum-plastic film of a lithium ion battery provided in embodiment 1 of the present invention;
1-an outer nylon layer; 2-a first tie layer; 3-outer high water absorption nanometer polymer layer, 4-middle aluminum layer; 5-a second tie layer; 6-inner heat sealing layer; 7-inner high water absorption nanometer polymer layer.
Detailed Description
The present invention will now be further described with reference to specific embodiments in order to enable those skilled in the art to better understand the present invention.
Example 1
The lithium ion battery aluminum plastic film in example 1 comprises: an inner water-absorbing layer; an outer water-absorbing layer; namely, the composite material comprises an outer high water absorption nanometer polymer layer and an inner high water absorption nanometer polymer layer, wherein the two water absorption layers contain the following binding agents [ EMIm ] [ BF4] and polyacrylonitrile polymer in the mass ratio: 1: 1: 98, respectively;
specifically, the method for preparing the aluminum plastic film of the lithium ion battery provided in this embodiment includes the following steps:
step 1) polyurethane and 1-ethyl-3-methylimidazolium tetrafluoroborate [ EMIm][BF4]And polyacrylonitrile polymer according to the mass ratio of 1: 1: 98, adding into a material chamber, adjusting the temperature of a heater to 330 ℃, andheating to polyurethane, [ EMIm][BF4]Completely melting the polyacrylonitrile copolymer with polyacrylonitrile to obtain a melt;
step 2), flatly placing the aluminum layer on a collecting plate;
step 3) extruding the melt out of a syringe needle of the injection pump by air flow pressurization to form a Taylor cone, and forming a high water absorption nano polyacrylonitrile polymer jet flow on the outer surface of the aluminum layer in the step 2) under a high-voltage electric field;
step 4), obtaining an outer high water absorption nano polyacrylonitrile layer on the surface of the aluminum layer after the spraying is finished;
step 5) sequentially placing a nylon layer, a first bonding layer, outer high water absorption nano polyacrylonitrile, a middle layer aluminum layer, a second bonding layer and an inner heat sealing layer in the following sequence, and then directly pressurizing;
step 6), after cooling, placing the multilayer aluminum-plastic film obtained in the step 5) on a collecting plate, wherein the inner heat sealing layer faces upwards;
and 7) repeating the steps 1) and 3) and 4), compounding the high water absorption nano polyacrylonitrile layer on the inner surface of the inner heat sealing layer to obtain the lithium ion battery aluminum plastic film.
The first bonding layer and the second bonding layer can be made of at least one of resin, epoxy polymer, polyurethane and hot melt adhesive; the thickness of the first bonding layer and the second bonding layer is between 2 and 10 mu m. The material of the adhesive layer is preferably any of the above materials, but the adhesive layer is not limited to the above materials, and any material that can perform the same function as the above material in the present invention may be used as the material of the adhesive layer.
Example 2
Example 2 compared to example 1, there was no inner superabsorbent biopolymer layer; wherein, the adhesive and the [ EM Im ] in the outer high water absorption nano polyacrylonitrile layer][BF4]And the mass ratio of the polyacrylonitrile polymer is 1: 1: 98, respectively;
a preparation method of an aluminum plastic film of a lithium ion battery comprises the following steps:
step 1) preparation of polyurethane and [ EM Im][BF4]And polyacrylonitrile polymer according to the mass ratio of 1: 1: 98, mixing uniformly, adding into a material chamber, and adjusting a heaterTemperature to 330 ℃ and heating to polyurethane, [ EM Im][BF4]Completely melting the polyacrylonitrile copolymer with polyacrylonitrile to obtain a melt;
step 2), flatly placing the aluminum layer on a collecting plate;
step 3) extruding the melt out of a needle head of the injection pump by air flow pressurization to form a Taylor cone, and spraying the Taylor cone onto the outer surface of the aluminum layer in the step 2) under a high-voltage electric field to form a high-water-absorption nano polyacrylonitrile polymer spraying flow;
step 4), obtaining an outer high water absorption nano polyacrylonitrile layer on the surface of the aluminum layer after the spraying is finished;
and step 5) placing the nylon layer, the first bonding layer, the high-water-absorption nano polyacrylonitrile layer, the middle aluminum layer, the second bonding layer and the inner heat-sealing layer in sequence, and then directly pressurizing to prepare the functional aluminum-plastic film.
Example 3
Example 3 comprises two water-absorbing layers, an inner water-absorbing layer and an outer water-absorbing layer; binder in water-absorbing layer, [ EM Im][BF4]And the mass ratio of the polyacrylonitrile polymer is 3: 1: 96;
a preparation method of an aluminum plastic film of a lithium ion battery comprises the following steps:
step 1) preparation of polyurethane and [ EM Im][BF4]And polyacrylonitrile polymer according to the mass ratio of 3: 1: 96, adding into a material chamber, adjusting the temperature of a heater to 330 ℃, and heating to polyurethane and EM Im][BF4]Completely melting the polyacrylonitrile copolymer with polyacrylonitrile to obtain a melt;
step 2), flatly placing the aluminum layer on a collecting plate;
step 3) extruding the melt out of a needle head of the injection pump by air flow pressurization to form a Taylor cone, and spraying the Taylor cone onto the outer surface of the aluminum layer in the step 2) under a high-voltage electric field to form a high-water-absorption nano polyacrylonitrile polymer spraying flow;
step 4), obtaining an outer high water absorption nano polyacrylonitrile layer on the surface of the aluminum layer after the spraying is finished;
step 5) placing a nylon layer, a first bonding layer, outer high water absorption nano polyacrylonitrile, a middle layer aluminum layer, a second bonding layer and an inner layer heat sealing layer in sequence, and then heating to 950 ℃;
step 6), after cooling, placing the obtained multilayer aluminum-plastic film on a collecting plate, wherein a heat sealing layer faces upwards;
and 7) repeating the steps 1) and 3) and 4) compounding the high-water-absorption nano-polyacrylonitrile layer on the inner surface of the heat-sealing layer to obtain the functional aluminum-plastic film with the outer nylon layer, the adhesive layer, the outer high-water-absorption nano-polyacrylonitrile layer, the middle aluminum layer, the adhesive layer, the inner heat-sealing layer and the inner high-water-absorption nano-polyacrylonitrile layer.
Example 4
In example 4, the water absorbent layer of the inner layer is provided, and the water absorbent layer of the outer layer is not provided; wherein [ EM Im][BF4]And the mass ratio of the polyacrylonitrile polymer is 1: 99 (the outer water-absorbing layer does not contain a binder);
the method of making the lithium ion battery of embodiment 4, comprising the steps of:
step 1) directly pressurizing a nylon layer, an adhesive layer, a middle aluminum layer, an adhesive layer and an inner heat-sealing layer in the following placing sequence;
step 2) mixing [ EM Im][BF4]And polyacrylonitrile polymer according to the mass ratio of 1: 99 into the chamber, the heater temperature was adjusted to 330 ℃ and heated to [ EM Im][BF4]Completely melting polyacrylonitrile polymer;
step 3) flatly placing the aluminum-plastic film prepared in the step 1 on a collecting plate;
step 4) extruding the melt out of a syringe needle of the injection pump by air flow pressurization to form a Taylor cone, and forming a high water absorption nano polyacrylonitrile polymer jet flow under a high-voltage electric field;
and 5) after the spraying is finished, obtaining the composite high water absorption nano polyacrylonitrile layer on the surface of the inner layer heat-sealing layer.
Example 5
Example 5 contains an inner water-absorbent layer and an outer water-absorbent layer; no binder is added in the preparation process of the inner water-absorbing layer and the outer water-absorbing layer;
the preparation method of the aluminum plastic film for the lithium ion battery provided in embodiment 5 includes the following steps:
step 1) mixing 1-ethyl-3-methylimidazole tetrafluoroborate [ EM Im ] [ BF4] and polyacrylonitrile polymer according to a mass ratio of 1: 99, uniformly mixing, adding into a material chamber, adjusting the temperature of a heater to 330 ℃, and heating until polyurethane, EM Im, BF4 and polyacrylonitrile polymer are completely melted to obtain a melt;
step 2), flatly placing the aluminum layer on a collecting plate;
step 3) extruding the melt out of a syringe needle of the injection pump by air flow pressurization to form a Taylor cone, and forming a high water absorption nano polyacrylonitrile polymer jet flow on the outer surface of the aluminum layer in the step 2) under a high-voltage electric field;
step 4), obtaining an outer high water absorption nano polyacrylonitrile layer on the surface of the aluminum layer after the spraying is finished;
step 5) sequentially placing a nylon layer, a first bonding layer, outer high water absorption nano polyacrylonitrile, a middle layer aluminum layer, a second bonding layer and an inner heat sealing layer in the following sequence, and then directly pressurizing;
step 6), after cooling, placing the multilayer aluminum-plastic film obtained in the step 5) on a collecting plate, wherein the inner heat sealing layer faces upwards;
step 7) repeating the steps 1) and 3) and 4), spraying an inner-layer high-water-absorption nano polyacrylonitrile layer on the inner surface of the inner-layer heat-sealing layer to obtain the aluminum plastic film of the lithium ion battery; similarly, the mass ratio of the 1-ethyl-3-methylimidazolium tetrafluoroborate [ EM Im ] [ BF4] in the inner layer high water absorption nano polyacrylonitrile layer to the polyacrylonitrile polymer is 1: 99 of the reaction mixture.
Comparative example
Compared with example 1, in the comparative example, there were no inner layer water-absorbent layer and outer layer water-absorbent layer, and no adhesive;
and step 1) directly pressurizing a nylon layer, an adhesive layer, a middle aluminum layer, an adhesive layer and an inner heat-sealing layer in the following placing sequence to prepare the aluminum-plastic film.
Example 6
The electrolyte corrosion resistance and the water vapor barrier property of the aluminum-plastic film are tested according to the following method, the cell is packaged after the aluminum-plastic film of different embodiments is subjected to shell punching (the cell is in the same batch and model), and the battery bulge condition is tested, and the result is as follows:
TABLE 1 Performance test of lithium ion battery aluminum plastic films in each of examples and comparative examples
From the data analysis in Table 1, the aluminum plastic film of the lithium ion battery in example 1 was placed in an electrolyte (EC/DEC LiPF) at 85 deg.C6) Soaking for 24h, and the aluminum-plastic film is not corroded; the peel strength of the inner layer is more than or equal to 23N/15 mm;
the barrier property to water vapor is better, and 30PPM is detected after the film is placed at 60 ℃ and 90% RH for 14 days;
the phenomenon of bulging and flatulence is avoided;
the same lithium ion battery aluminum plastic film in the embodiment 3 has better electrolyte corrosion resistance and water vapor barrier property, and does not have the phenomenon of swelling; the amount of the binder used in example 3 is increased, and the water vapor barrier property of the binder is not obviously improved, which is slightly inferior to that of example 1, and this shows that the more binder that is not used, the better the water vapor barrier property is; the electrolyte corrosion resistance is slightly stronger than that of the embodiment 1.
In the embodiment 2, the inner high water absorption nano polymer layer is not formed, and the aluminum plastic film is not corroded in electrolyte corrosion resistance detection; the peel strength of the inner layer is more than or equal to 23N/15 mm; the water vapor barrier property is less than 100 PPM; from the aspect of battery swelling gas generation, slight swelling phenomenon exists.
In example 4, the outer super absorbent nano polymer layer is not present, and the aluminum plastic film is not corroded in the electrolyte corrosion resistance detection; the peel strength of the inner layer is more than or equal to 22N/15 mm; the water vapor barrier property is less than 105 PPM; from the aspect of battery swelling gas production, the phenomenon of swelling gas is avoided.
As can be seen from examples 2 and 4, only the outer water-absorbing layer (high water-absorbing nano polymer layer) or only the inner water-absorbing layer has a significantly reduced water vapor barrier property and substantially no change in corrosion resistance; but the water absorption layer of the inner layer is not provided, so that the battery has slight flatulence.
In the example 5, the water-absorbing film contains the inner water-absorbing layer and the outer water-absorbing layer, but no adhesive is added in the preparation process of the water-absorbing layer containing the inner water-absorbing layer and the outer water-absorbing layer, the peel strength of the inner layer is slightly lower than that of the example 1, and the aluminum-plastic film is not corroded; the peel strength of the inner layer is more than or equal to 18N/15mm, and the water vapor barrier property is less than 33 PPM. The above results show that the addition of the binder to the water-absorbing layer has a positive effect on the enhancement of the peel strength of the inner layer against electrolyte corrosion and the water vapor barrier properties of the inner and outer super-absorbent layers.
In the comparative example, the electrolyte corrosion resistance and the water vapor barrier property are far inferior to those of examples 1 and 3, which shows that the inner water-absorbing nano polymer layer and the outer high water-absorbing nano polymer layer have obvious effects on improving the electrolyte corrosion resistance and the water vapor barrier property of the lithium ion battery.
The high water absorption nano polymer layer adopted by the invention has good water blocking performance, and simultaneously prevents the electrolyte from corroding the aluminum plastic film, the inner high water absorption nano layer can absorb the redundant water in the battery, the battery has no swelling phenomenon, the bonding agent enhances the peeling strength of the inner layer of the aluminum plastic film, and ensures the bonding strength between the layers.
Claims (10)
1. The lithium ion battery aluminum-plastic film is characterized by comprising an outer nylon layer (1), a first bonding layer (2), an outer high-water-absorption nano polymer layer (3), an intermediate aluminum layer (4), a second bonding layer (5), an inner heat-sealing layer (6) and an inner high-water-absorption nano polymer layer (7) from outside to inside in sequence.
2. The lithium ion battery aluminum plastic film according to claim 1, wherein the outer high water absorption nano polymer layer (3) and the inner high water absorption nano polymer layer (7) are both prepared from high water absorption nano polymers;
preferably, the lithium ion battery aluminum plastic film is a multilayer flexible film.
3. The lithium ion battery aluminum plastic film according to claim 2, wherein the high water absorption nano polymer is at least one selected from starch polymers, cellulose polymers, polyacrylonitrile polymers, polyacrylamide polymers, polyvinyl alcohol polymers and polyacrylic polymers.
4. The lithium ion battery aluminum plastic film according to claim 1, wherein the fiber diameter of the outer layer high water absorption nano polymer layer/the inner layer high water absorption nano polymer layer is 10-100 nm.
5. The lithium ion battery aluminum plastic film according to claim 1, wherein the thickness of the outer high water absorption nano polymer layer/the inner high water absorption nano polymer layer is 50-500 nm.
6. The method for preparing the aluminum plastic film of the lithium ion battery according to claim 1, comprising the following steps:
1) uniformly mixing the adhesive, the conductive agent and the high-water-absorptivity nano polymer, and heating until the adhesive and the high-water-absorptivity nano polymer are molten to obtain a melt;
2) flatly placing the aluminum layer on a collecting plate;
3) extruding the melt in the step 1) out of a needle head of an injection pump by air flow pressurization to form a Taylor cone, and spraying the Taylor cone to the outer surface of the aluminum layer in the step 2) under a high-voltage electric field to form an outer-layer super absorbent nano polymer spraying flow;
4) after spraying is finished, obtaining an outer high water absorption nano polymer layer;
5) directly pressurizing or heating and compounding an outer nylon layer, a first bonding layer, an outer high-water-absorption nano polymer layer, a middle aluminum layer, a second bonding layer and an inner heat sealing layer in the following sequence;
6) after cooling, placing the aluminum-plastic film obtained in the step 5) on a collecting plate, wherein the inner heat sealing layer faces upwards;
7) and repeating the step 1), extruding the melt out of a needle head of the injection pump through air flow pressurization to form a Taylor cone, forming an inner-layer high-water-absorption nano polymer jet flow under a high-voltage electric field, jetting the inner-layer high-water-absorption nano polymer jet flow onto an inner-layer heat sealing layer, and obtaining the lithium ion battery aluminum plastic film after jetting is finished.
7. The method for preparing the aluminum plastic film for the lithium ion battery according to claim 6, wherein 1) the conductive agent is at least one selected from imidazole, pyridine, quaternary ammonium, quaternary phosphonium, pyrrole, thiazole and guanidine ionic liquids;
preferably, the addition amount of the conductive agent is 0.5-10 wt% of the aluminum plastic film of the battery.
8. The method for preparing the aluminum plastic film for the lithium ion battery according to claim 6, wherein the adhesive in 1) is at least one selected from epoxy polymer, polyurethane and hot melt adhesive.
9. The method for preparing the aluminum plastic film for the lithium ion battery according to claim 8, wherein the addition amount of the binder is 0.3-0.5 wt% of the aluminum plastic film for the battery.
10. The method for preparing the aluminum plastic film of the lithium ion battery according to claim 6, wherein in 1), the heating temperature is 310-350 ℃;
preferably, in 1), the mass ratio of the binder, the conductive agent and the high water absorption nano polymer is as follows: the mass ratio is 0.5-3: 0.5-3: 96-100 parts of;
preferably, in 1), the mass ratio of the binder, the conductive agent and the high water absorption nano polymer is as follows: the mass ratio is 1: 1: 98, respectively;
preferably, the heating temperature in the step 5) is 150-1000 ℃.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114407465A (en) * | 2022-02-14 | 2022-04-29 | 上海紫江新材料科技股份有限公司 | Polypropylene film for lithium battery aluminum plastic packaging film and preparation method thereof |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000215861A (en) * | 1999-01-21 | 2000-08-04 | Dainippon Printing Co Ltd | Manufacture of battery case sheet |
| US20020164441A1 (en) * | 2001-03-01 | 2002-11-07 | The University Of Chicago | Packaging for primary and secondary batteries |
| JP2007026682A (en) * | 2005-07-12 | 2007-02-01 | Sony Corp | Nonaqueous electrolyte secondary battery |
| JP2009073010A (en) * | 2007-09-20 | 2009-04-09 | Riken Technos Corp | Composite multilayer film |
| JP2009073014A (en) * | 2007-09-20 | 2009-04-09 | Riken Technos Corp | Composite multilayer film |
| CN102456913A (en) * | 2010-12-31 | 2012-05-16 | 深圳市海盈科技有限公司 | Lithium ion secondary battery with water-absorbing film and manufacturing method thereof |
| CN103088444A (en) * | 2013-02-26 | 2013-05-08 | 天津工业大学 | Method and device for improving number of electrostatic spinning multiple jet flows |
| CN204497279U (en) * | 2015-03-10 | 2015-07-22 | 山东英诺新材料有限公司 | A kind of lithium battery flexible packaging film |
| CN104966799A (en) * | 2015-07-13 | 2015-10-07 | 苏州锂盾储能材料技术有限公司 | Multifunctional composite packaging barrier aluminum-plastic film for lithium battery |
| JP2015232961A (en) * | 2014-06-10 | 2015-12-24 | 凸版印刷株式会社 | Manufacturing method for jacket member for power storage device |
| CN204991769U (en) * | 2015-07-13 | 2016-01-20 | 苏州锂盾储能材料技术有限公司 | Lithium cell composite packaging functionalization plastic -aluminum membrane |
| CN105304834A (en) * | 2015-10-08 | 2016-02-03 | 浙江超威创元实业有限公司 | Aluminum plastic film capable of detecting battery leakage |
| CN109532147A (en) * | 2018-11-17 | 2019-03-29 | 长沙小如信息科技有限公司 | A kind of lithium battery Soft Roll aluminum plastic film and preparation method thereof for blocking water fire-retardant |
| KR101975305B1 (en) * | 2018-02-28 | 2019-05-07 | (주)뉴원글로벌 | Case for pouch type secondary battery having improved safety |
| CN109822990A (en) * | 2019-01-23 | 2019-05-31 | 杨大伟 | A method of aluminum plastic film with flame retarding function and its prepare lithium ion battery |
| CN209169198U (en) * | 2018-11-13 | 2019-07-26 | 深圳市虎柏新能源科技有限公司 | A kind of lithium battery outer protective film with water absorbing properties |
| JP2020027797A (en) * | 2018-08-14 | 2020-02-20 | ニューワン グローバル カンパニー，リミテッド | Pouch type secondary battery case with enhanced safety |
-
2020
- 2020-05-14 CN CN202010408354.5A patent/CN111540848B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000215861A (en) * | 1999-01-21 | 2000-08-04 | Dainippon Printing Co Ltd | Manufacture of battery case sheet |
| US20020164441A1 (en) * | 2001-03-01 | 2002-11-07 | The University Of Chicago | Packaging for primary and secondary batteries |
| JP2007026682A (en) * | 2005-07-12 | 2007-02-01 | Sony Corp | Nonaqueous electrolyte secondary battery |
| JP2009073010A (en) * | 2007-09-20 | 2009-04-09 | Riken Technos Corp | Composite multilayer film |
| JP2009073014A (en) * | 2007-09-20 | 2009-04-09 | Riken Technos Corp | Composite multilayer film |
| CN102456913A (en) * | 2010-12-31 | 2012-05-16 | 深圳市海盈科技有限公司 | Lithium ion secondary battery with water-absorbing film and manufacturing method thereof |
| CN103088444A (en) * | 2013-02-26 | 2013-05-08 | 天津工业大学 | Method and device for improving number of electrostatic spinning multiple jet flows |
| JP2015232961A (en) * | 2014-06-10 | 2015-12-24 | 凸版印刷株式会社 | Manufacturing method for jacket member for power storage device |
| CN204497279U (en) * | 2015-03-10 | 2015-07-22 | 山东英诺新材料有限公司 | A kind of lithium battery flexible packaging film |
| CN104966799A (en) * | 2015-07-13 | 2015-10-07 | 苏州锂盾储能材料技术有限公司 | Multifunctional composite packaging barrier aluminum-plastic film for lithium battery |
| CN204991769U (en) * | 2015-07-13 | 2016-01-20 | 苏州锂盾储能材料技术有限公司 | Lithium cell composite packaging functionalization plastic -aluminum membrane |
| CN105304834A (en) * | 2015-10-08 | 2016-02-03 | 浙江超威创元实业有限公司 | Aluminum plastic film capable of detecting battery leakage |
| KR101975305B1 (en) * | 2018-02-28 | 2019-05-07 | (주)뉴원글로벌 | Case for pouch type secondary battery having improved safety |
| JP2020027797A (en) * | 2018-08-14 | 2020-02-20 | ニューワン グローバル カンパニー，リミテッド | Pouch type secondary battery case with enhanced safety |
| CN209169198U (en) * | 2018-11-13 | 2019-07-26 | 深圳市虎柏新能源科技有限公司 | A kind of lithium battery outer protective film with water absorbing properties |
| CN109532147A (en) * | 2018-11-17 | 2019-03-29 | 长沙小如信息科技有限公司 | A kind of lithium battery Soft Roll aluminum plastic film and preparation method thereof for blocking water fire-retardant |
| CN109822990A (en) * | 2019-01-23 | 2019-05-31 | 杨大伟 | A method of aluminum plastic film with flame retarding function and its prepare lithium ion battery |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114407465A (en) * | 2022-02-14 | 2022-04-29 | 上海紫江新材料科技股份有限公司 | Polypropylene film for lithium battery aluminum plastic packaging film and preparation method thereof |
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