CN108023120A - A kind of flexible lithium ion battery encapsulating material and its packaging technology - Google Patents
A kind of flexible lithium ion battery encapsulating material and its packaging technology Download PDFInfo
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- CN108023120A CN108023120A CN201810019251.2A CN201810019251A CN108023120A CN 108023120 A CN108023120 A CN 108023120A CN 201810019251 A CN201810019251 A CN 201810019251A CN 108023120 A CN108023120 A CN 108023120A
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- 239000000463 material Substances 0.000 title claims abstract description 50
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 27
- 238000012536 packaging technology Methods 0.000 title claims description 8
- 230000004888 barrier function Effects 0.000 claims abstract description 78
- 239000002131 composite material Substances 0.000 claims abstract description 77
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 55
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 47
- 239000001301 oxygen Substances 0.000 claims abstract description 47
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 47
- 229920000642 polymer Polymers 0.000 claims abstract description 38
- 229920005570 flexible polymer Polymers 0.000 claims abstract description 35
- 238000000034 method Methods 0.000 claims abstract description 26
- 239000007773 negative electrode material Substances 0.000 claims abstract description 14
- 239000007774 positive electrode material Substances 0.000 claims abstract description 11
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 15
- 229910052782 aluminium Inorganic materials 0.000 claims description 15
- 238000004026 adhesive bonding Methods 0.000 claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- 238000000231 atomic layer deposition Methods 0.000 claims description 10
- 238000005229 chemical vapour deposition Methods 0.000 claims description 10
- 239000011889 copper foil Substances 0.000 claims description 10
- 239000011888 foil Substances 0.000 claims description 10
- 239000004642 Polyimide Substances 0.000 claims description 9
- 229920001721 polyimide Polymers 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 9
- 239000002033 PVDF binder Substances 0.000 claims description 8
- 239000000853 adhesive Substances 0.000 claims description 8
- 230000001070 adhesive effect Effects 0.000 claims description 8
- 239000003610 charcoal Substances 0.000 claims description 8
- 238000001755 magnetron sputter deposition Methods 0.000 claims description 8
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 8
- 238000010345 tape casting Methods 0.000 claims description 8
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 7
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 7
- 238000000151 deposition Methods 0.000 claims description 6
- 230000008021 deposition Effects 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 5
- -1 polyethylene terephthalate Polymers 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 4
- KFDQGLPGKXUTMZ-UHFFFAOYSA-N [Mn].[Co].[Ni] Chemical compound [Mn].[Co].[Ni] KFDQGLPGKXUTMZ-UHFFFAOYSA-N 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims description 4
- 239000005033 polyvinylidene chloride Substances 0.000 claims description 4
- 238000007639 printing Methods 0.000 claims description 4
- 238000007650 screen-printing Methods 0.000 claims description 4
- 239000000565 sealant Substances 0.000 claims description 4
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 4
- 239000007784 solid electrolyte Substances 0.000 claims description 4
- 229910001928 zirconium oxide Inorganic materials 0.000 claims description 4
- 229920006254 polymer film Polymers 0.000 claims description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 abstract description 8
- 238000002955 isolation Methods 0.000 abstract description 5
- 238000009792 diffusion process Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 157
- 239000010408 film Substances 0.000 description 64
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000004568 cement Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005538 encapsulation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 235000019253 formic acid Nutrition 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 238000005240 physical vapour deposition Methods 0.000 description 2
- LLLVZDVNHNWSDS-UHFFFAOYSA-N 4-methylidene-3,5-dioxabicyclo[5.2.2]undeca-1(9),7,10-triene-2,6-dione Chemical compound C1(C2=CC=C(C(=O)OC(=C)O1)C=C2)=O LLLVZDVNHNWSDS-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 150000002466 imines Chemical class 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- 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
- H01M50/183—Sealing members
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a kind of flexible lithium ion battery encapsulating material, it is characterised in that：Including positive composite layer and anode composite bed, the positive composite layer is disposed with high water oxygen separating polymer composite film layer, anode collection layer and positive electrode material layer from top to bottom, and the anode composite bed is disposed with high water oxygen separating polymer composite film layer, negative pole currect collecting layer, negative electrode material layer and dielectric film thin layer from top to bottom.Advantage is：The present invention on the flexible polymer film surface of high barrier by preparing inorganic barrier layer, the diffusion of water, oxygen molecule can be reduced, and then reduce the transmitance of water oxygen molecule, meanwhile by the way that by encapsulating material and the integrated design of collector, the interface problem between encapsulating material and collector can be reduced, ensure the flexibility of battery, this method manufacture craft is simple, water and oxygen barrier property is excellent, can not only keep battery to have preferable flexible, but also can obtain good water oxygen isolation performance.
Description
Technical field
The present invention relates to flexible lithium ion battery technical field, more particularly to a kind of flexible lithium ion battery package material
Material, has further related to a kind of packaging technology of flexible lithium ion battery encapsulating material.
Background technology
In recent years, as the appearance of flexible display screen, corresponding flexible lithium ion battery will also obtain unprecedented pass
Note.At present, on domestic market in terms of flexible lithium ion battery, the technology of preparing of lithium ion battery electrode material has been achieved for
Very big progress, and also achieve corresponding technological achievement.But in terms of battery capacity, due to encapsulating material and encapsulation work
The limitation of skill, flexible lithium ion battery still have a certain distance from conventional lithium ion battery, this seriously inhibits flexible lithium from
The development of sub- battery.
Therefore, in view of the shortcomings of the prior art, providing that a kind of water oxygen isolation performance is excellent, preparation process is simple and can be extensive
Encapsulating material and the packaging technology for producing high power capacity flexible lithium ion battery are very necessary.
Therefore, it is necessary to seek a kind of new technology to solve the above problems.
The content of the invention
The purpose of the present invention is：For above-mentioned deficiency, there is provided a kind of flexible lithium ion battery encapsulating material and its encapsulation work
Skill.
To reach above-mentioned purpose, the technical solution adopted by the present invention is：
A kind of flexible lithium ion battery encapsulating material, including positive composite layer and anode composite bed, the positive composite layer
High water oxygen separating polymer composite film layer, anode collection layer and positive electrode material layer are disposed with from top to bottom, it is described
Anode composite bed is disposed with high water oxygen separating polymer composite film layer, negative pole currect collecting layer, negative material from top to bottom
Layer and dielectric film thin layer.
The high water oxygen separating polymer composite film layer by high barrier flexible polymer film and inorganic barrier
The material of layer is formed, and wherein the flexible polymer film of high barrier is by polyimides (PI), polyethylene terephthalate
(PET), a kind of composition in polyvinylidene chloride (PVDC), the thickness of the flexible polymer film of the high barrier are
10um-100um, the material of inorganic barrier layer are the one or more in aluminium oxide, silica, aluminium, zirconium oxide and silicon nitride,
The inorganic barrier layer passes through magnetron sputtering either atomic layer deposition method or chemical vapour deposition technique or physical vapour deposition (PVD)
Method is prepared, and the thickness of the inorganic barrier layer is 10nm-1um.
The anode collection layer is made of one kind in rolling aluminum foil or electrolytic aluminum foil, its thickness is 20-50um, anode collection
Layer is combined with each other with high water oxygen separating polymer composite film layer by the mode that gluing mode or physics imprint, and is formed
Integral structure.
The positive electrode material layer is mainly made of nickel-cobalt-manganese ternary material, conductive charcoal and adhesive PVDF, its thickness is 50-
200um。
The negative pole currect collecting layer is made of one kind in rolled copper foil or electrolytic copper foil, its thickness is 20-50um, negative pole currect collecting
Layer is combined with each other with high water oxygen separating polymer laminated film by the mode that gluing mode or physics imprint, and forms one
Body structure.
The negative electrode material layer is mainly made of graphite, conductive charcoal and adhesive PVDF, its thickness is 50-200um.
The dielectric film thin layer uses solid electrolyte membrane, its thickness is 20-50um.
A kind of packaging technology of flexible lithium ion battery encapsulating material, includes the preparation of positive composite layer：Step 1：Select
Thickness is layer based on the flexible polymer film of 10um-100um high barriers, uses magnetron sputtering or atomic layer deposition
Either thickness is made on the surface of the flexible polymer film of high barrier in chemical vapour deposition technique or physical vaporous deposition to method
The inorganic barrier layer for 10nm-1um is spent, the flexible polymer film and inorganic barrier layer of high barrier form one high water oxygen resistance
Every property polymer composite film layer,
Step 2：The side imprinted again on high water oxygen separating polymer composite film layer using gluing mode or physics
Formula prepares the anode collection layer that a layer thickness is 20-50um,
Step 3：Finally the positive electrode that a layer thickness is 50-200um is coated with anode collection layer surface using the tape casting
Layer, forms encapsulated layer and the integrated structure of anode pole piece；
Further include the preparation of anode composite bed, step 1：Select the flexible polymer that thickness is 10um-100um high barriers
Layer based on thing film, using magnetron sputtering, either atomic layer deposition method or chemical vapour deposition technique or physical vapor are sunk
The inorganic barrier layer that thickness is 10nm-1um is made on the surface of the flexible polymer film of high barrier for area method, high barrier
Flexible polymer film and inorganic barrier layer form one high water oxygen separating polymer composite film layer,
Step 2：The side imprinted again on high water oxygen separating polymer composite film layer using gluing mode or physics
Formula prepares the negative pole currect collecting layer that a layer thickness is 20-50um,
Step 3：Reuse the tape casting and be coated with the negative material that a layer thickness is 50-200um in negative pole currect collecting layer surface
Layer,
Step 4：Spraying coating process is finally used in the dielectric film of negative electrode material layer surface spraying a layer thickness 20-50um
Thin layer, forms encapsulated layer and the integrated structure of cathode pole piece；
Finally, one circle glue groove of silk-screen printing printing, choosing are passed through in positive composite layer and anode composite bed encapsulating material edge
By the use of optical cement as fluid sealant, it is combined by cold press by positive composite layer and anode are laminated, wherein cold press
Temperature is 30 DEG C, pressure 0.2MPa, is cold-pressed time 10min.
Compared with prior art, what the present invention was reached has the technical effect that：1st, the present invention passes through the flexibility in high barrier
Polymeric film surface prepares inorganic barrier layer, can reduce the diffusion of water, oxygen molecule, and then reduce the transmission of water oxygen molecule
Rate, meanwhile, by the way that by encapsulating material and the integrated design of collector, the interface between encapsulating material and collector can be reduced
Problem, ensures the flexibility of battery, and this method manufacture craft is simple, water and oxygen barrier property is excellent, can both keep battery have compared with
Good flexibility, and good water oxygen isolation performance can be obtained.
Brief description of the drawings
Fig. 1 is positive composite layer structure diagram；
Fig. 2 is anode lamination layer structure schematic diagram；
Fig. 3 positive composite layers and anode composite bed encapsulation figure.
Embodiment
The invention will be further described with reference to the accompanying drawings and embodiments：
Embodiment one：
A kind of flexible lithium ion battery encapsulating material, including positive composite layer and anode composite bed, the positive composite layer
High water oxygen separating polymer composite film layer, anode collection layer 120 and positive electrode material layer are disposed with from top to bottom
130, the anode composite bed is disposed with high water oxygen separating polymer composite film layer, negative pole currect collecting layer from top to bottom
220th, negative electrode material layer 230 and dielectric film thin layer 240.
The high water oxygen separating polymer composite film layer by high barrier flexible polymer film 100,200 and nothing
The material of machine barrier layer 110,210 is formed, and wherein the flexible polymer film of high barrier is by polyimides (PI), poly- to benzene two
A kind of composition in formic acid glycol ester (PET), polyvinylidene chloride (PVDC), the flexible polymer film of the high barrier
100 thickness is 10um-100um, and the material of inorganic barrier layer is in aluminium oxide, silica, aluminium, zirconium oxide and silicon nitride
One or more, the inorganic barrier layer 110,210 pass through magnetron sputtering either atomic layer deposition method or chemical vapor deposition
Method or physical vaporous deposition are prepared, and the thickness of the inorganic barrier layer 110,210 is 10nm-1um.
The anode collection layer 120 is made of one kind in rolling aluminum foil or electrolytic aluminum foil, its thickness is 20-50um, cathode
Current collector layer 120 is compounded in one with high water oxygen separating polymer composite film layer by the mode that gluing mode or physics imprint
Rise, being integrally formed structure.
The positive electrode material layer 130 is mainly made of nickel-cobalt-manganese ternary material, conductive charcoal and adhesive PVDF, its thickness is
50-200um。
The negative pole currect collecting layer 220 is made of one kind in rolled copper foil or electrolytic copper foil, its thickness is 20-50um, anode
Current collector layer 220 is compounded in one with high water oxygen separating polymer laminated film by the mode that gluing mode or physics imprint
Rise, being integrally formed structure.
The negative electrode material layer 230 is mainly made of graphite, conductive charcoal and adhesive PVDF, its thickness is 50-200um.
The dielectric film thin layer 240 uses solid electrolyte membrane, its thickness is 20-50um.
A kind of packaging technology of flexible lithium ion battery encapsulating material, includes the preparation of positive composite layer：Step 1：Select
Thickness is 10um-100um, preferably layer based on the flexible polymer film 100 of the high barrier of 25um, is preferably polyamides
Imines, it is 10nm-1um that thickness, which is made, on the surface of the flexible polymer film 100 of high barrier using atomic layer deposition method, excellent
Elect the inorganic barrier layer 110 of 60nm as, preferably aluminium oxide, the flexible polymer film 100 and inorganic barrier layer of high barrier
110 form one high water oxygen separating polymer composite film layer,
Step 2：The mode imprinted again on high water oxygen separating polymer composite film layer using physics prepares a thickness
To spend for 20-50um, be preferably the anode collection layer 120 of 25um, anode collection layer 120 is rolling aluminum foil,
Step 3：It is 50-200um to be finally coated with a layer thickness in anode collection layer surface using the tape casting, preferably
The positive electrode material layer of 100um, forms encapsulated layer and the integrated structure of anode pole piece；
Further include the preparation of anode composite bed, step 1：Selection thickness is 10um-100um, is preferably the high-barrier of 25um
Property flexible polymer film 200 based on layer, be preferably polyimides, using atomic layer deposition method in the soft of high barrier
Property thin polymer film 200 thickness is made is 10nm-1um on surface, be preferably the inorganic barrier layer 210 of 60nm, preferably aoxidize
Aluminium, the flexible polymer film 200 and inorganic barrier layer 210 of high barrier form one high water oxygen separating polymer THIN COMPOSITE
Film layer,
Step 2：The mode imprinted again on high water oxygen separating polymer composite film layer using physics prepares a thickness
To spend for 20-50um, be preferably the negative pole currect collecting layer 220 of 20um, negative pole currect collecting layer 220 is rolled copper foil,
Step 3：It is 50-200um to reuse the tape casting and a layer thickness is coated with 220 surface of negative pole currect collecting layer, is preferably
The negative electrode material layer 230 of 100um,
Step 4：Finally using spraying coating process in negative electrode material layer surface spraying a layer thickness 20-50um, preferably 30um
Dielectric film thin layer 240, form encapsulated layer and the integrated structure of cathode pole piece；
Finally, glue groove 300 is enclosed by silk-screen printing printing one in positive composite layer and anode composite bed encapsulating material edge,
Optical cement is selected as fluid sealant, is combined by cold press by positive composite layer and anode are laminated, wherein cold press
Temperature be 30 DEG C, pressure 0.2MPa, be cold-pressed time 10min.
Compared with prior art, what the present invention was reached has the technical effect that：1st, the present invention passes through the flexibility in high barrier
Polymeric film surface prepares inorganic barrier layer, can reduce the diffusion of water, oxygen molecule, and then reduce the transmission of water oxygen molecule
Rate, meanwhile, by the way that by encapsulating material and the integrated design of collector, the interface between encapsulating material and collector can be reduced
Problem, ensures the flexibility of battery, and this method manufacture craft is simple, water and oxygen barrier property is excellent, can both keep battery have compared with
Good flexibility, and good water oxygen isolation performance can be obtained.
Embodiment two：
A kind of flexible lithium ion battery encapsulating material, including positive composite layer and anode composite bed, the positive composite layer
High water oxygen separating polymer composite film layer, anode collection layer 120 and positive electrode material layer are disposed with from top to bottom
130, the anode composite bed is disposed with high water oxygen separating polymer composite film layer, negative pole currect collecting layer from top to bottom
220th, negative electrode material layer 230 and dielectric film thin layer 240.
The high water oxygen separating polymer composite film layer by high barrier flexible polymer film 100,200 and nothing
The material of machine barrier layer 110,210 is formed, and wherein the flexible polymer film of high barrier is by polyimides (PI), poly- to benzene two
A kind of composition in formic acid glycol ester (PET), polyvinylidene chloride (PVDC), the flexible polymer film of the high barrier
100 thickness is 10um-100um, and the material of inorganic barrier layer is in aluminium oxide, silica, aluminium, zirconium oxide and silicon nitride
One or more, the inorganic barrier layer 110,210 pass through magnetron sputtering either atomic layer deposition method or chemical vapor deposition
Method or physical vaporous deposition are prepared, and the thickness of the inorganic barrier layer 110,210 is 10nm-1um.
The anode collection layer 120 is made of one kind in rolling aluminum foil or electrolytic aluminum foil, its thickness is 20-50um, cathode
Current collector layer 120 is compounded in one with high water oxygen separating polymer composite film layer by the mode that gluing mode or physics imprint
Rise, being integrally formed structure.
The positive electrode material layer 130 is mainly made of nickel-cobalt-manganese ternary material, conductive charcoal and adhesive PVDF, its thickness is
50-200um。
The negative pole currect collecting layer 220 is made of one kind in rolled copper foil or electrolytic copper foil, its thickness is 20-50um, anode
Current collector layer 220 is compounded in one with high water oxygen separating polymer laminated film by the mode that gluing mode or physics imprint
Rise, being integrally formed structure.
The negative electrode material layer 230 is mainly made of graphite, conductive charcoal and adhesive PVDF, its thickness is 50-200um.
The dielectric film thin layer 240 uses solid electrolyte membrane, its thickness is 20-50um.
A kind of packaging technology of flexible lithium ion battery encapsulating material, includes the preparation of positive composite layer：Step 1：Select
Thickness is 10um-100um, preferably layer based on the flexible polymer film 100 of the high barrier of 50um, preferably poly- pair
Ethylene terephthalate, thickness is made using chemical vapour deposition technique on the surface of the flexible polymer film 100 of high barrier
Spend for 10nm-1um, be preferably the inorganic barrier layer 110 of 80nm, be preferably silica, the flexible polymer of high barrier is thin
Film 100 and inorganic barrier layer 110 form one high water oxygen separating polymer composite film layer,
Step 2：Preparing a layer thickness using gluing mode on high water oxygen separating polymer composite film layer again is
20-50um, is preferably the anode collection layer 120 of 40um, and anode collection layer 120 is electrolytic aluminum foil,
Step 3：It is 50-200um to be finally coated with a layer thickness in anode collection layer surface using the tape casting, preferably
The positive electrode material layer of 100um, forms encapsulated layer and the integrated structure of anode pole piece；
Further include the preparation of anode composite bed, step 1：Selection thickness is 10um-100um, is preferably the high-barrier of 50um
Property flexible polymer film 200 based on layer, be preferably polyethylene terephthalate, use chemical vapour deposition technique
It is 10nm-1um that thickness is made on the surface of the flexible polymer film 200 of high barrier, is preferably the inorganic barrier layer of 80nm
210, it is preferably silica, the flexible polymer film 200 and inorganic barrier layer 210 of high barrier form one high water oxygen resistance
Every property polymer composite film layer,
Step 2：Preparing a layer thickness using gluing mode on high water oxygen separating polymer composite film layer again is
20-50um, is preferably the negative pole currect collecting layer 220 of 400um, and negative pole currect collecting layer 220 is electrolytic copper foil,
Step 3：It is 50-200um to reuse the tape casting and a layer thickness is coated with 220 surface of negative pole currect collecting layer, is preferably
The negative electrode material layer 230 of 100um,
Step 4：Finally using spraying coating process in negative electrode material layer surface spraying a layer thickness 20-50um, preferably 30um
Dielectric film thin layer 240, form encapsulated layer and the integrated structure of cathode pole piece；
Finally, glue groove 300 is enclosed by silk-screen printing printing one in positive composite layer and anode composite bed encapsulating material edge,
Optical cement is selected as fluid sealant, is combined by cold press by positive composite layer and anode are laminated, wherein cold press
Temperature be 30 DEG C, pressure 0.2MPa, be cold-pressed time 10min.
Compared with prior art, what the present invention was reached has the technical effect that：1st, the present invention passes through the flexibility in high barrier
Polymeric film surface prepares inorganic barrier layer, can reduce the diffusion of water, oxygen molecule, and then reduce the transmission of water oxygen molecule
Rate, meanwhile, by the way that by encapsulating material and the integrated design of collector, the interface between encapsulating material and collector can be reduced
Problem, ensures the flexibility of battery, and this method manufacture craft is simple, water and oxygen barrier property is excellent, can both keep battery have compared with
Good flexibility, and good water oxygen isolation performance can be obtained
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
Scholar can understand present disclosure and implement according to this, and it is not intended to limit the scope of the present invention.It is all according to the present invention
The equivalent change or modification that Spirit Essence is made, should be covered by the protection scope of the present invention.
Claims (8)
- A kind of 1. flexible lithium ion battery encapsulating material, it is characterised in that：Including positive composite layer and anode composite bed, it is described just Pole composite bed is disposed with high water oxygen separating polymer composite film layer, anode collection layer and positive electrode from top to bottom Layer, the anode composite bed are disposed with high water oxygen separating polymer composite film layer, negative pole currect collecting layer, bear from top to bottom Pole material layer and dielectric film thin layer.
- A kind of 2. flexible lithium ion battery encapsulating material according to claim 1, it is characterised in that：The high water oxygen barrier Property polymer composite film layer is made of the flexible polymer film of high barrier and the material of inorganic barrier layer, wherein high-barrier The flexible polymer film of property is by polyimides (PI), polyethylene terephthalate (PET), polyvinylidene chloride (PVDC) In a kind of composition, the thickness of the flexible polymer film of the high barrier is 10um-100um, the material of inorganic barrier layer For the one or more in aluminium oxide, silica, aluminium, zirconium oxide and silicon nitride, the inorganic barrier layer passes through magnetron sputtering Either atomic layer deposition method or chemical vapour deposition technique or physical vaporous deposition are prepared, the inorganic barrier layer Thickness is 10nm-1um.
- A kind of 3. flexible lithium ion battery encapsulating material according to claim 1, it is characterised in that：The anode collection layer It is made of one kind in rolling aluminum foil or electrolytic aluminum foil, its thickness is 20-50um, anode collection layer and high water oxygen separating polymer Composite film layer is combined with each other by the mode that gluing mode or physics imprint, being integrally formed structure.
- A kind of 4. flexible lithium ion battery encapsulating material according to claim 1, it is characterised in that：The positive electrode material layer Mainly it is made of nickel-cobalt-manganese ternary material, conductive charcoal and adhesive PVDF, its thickness is 50-200um.
- A kind of 5. flexible lithium ion battery encapsulating material according to claim 1, it is characterised in that：The negative pole currect collecting layer It is made of one kind in rolled copper foil or electrolytic copper foil, its thickness is 20-50um, negative pole currect collecting layer and high water oxygen separating polymer Laminated film is combined with each other by the mode that gluing mode or physics imprint, being integrally formed structure.
- A kind of 6. flexible lithium ion battery encapsulating material according to claim 1, it is characterised in that：The negative electrode material layer Mainly it is made of graphite, conductive charcoal and adhesive PVDF, its thickness is 50-200um.
- A kind of 7. flexible lithium ion battery encapsulating material according to claim 1, it is characterised in that：The dielectric film is thin Layer uses solid electrolyte membrane, its thickness is 20-50um.
- A kind of 8. packaging technology of flexible lithium ion battery encapsulating material, it is characterised in that：Preparation including positive composite layer：Step Rapid one：Thickness is selected as layer based on the flexible polymer film of 10um-100um high barriers, using magnetron sputtering or The atomic layer deposition method either flexible polymer film of chemical vapour deposition technique or physical vaporous deposition in high barrier The inorganic barrier layer that thickness is 10nm-1um is made in surface, and the flexible polymer film and inorganic barrier layer of high barrier form one A high water oxygen separating polymer composite film layer,Step 2：The mode system imprinted again on high water oxygen separating polymer composite film layer using gluing mode or physics The anode collection layer that standby a layer thickness is 20-50um,Step 3：The positive electrode material layer that a layer thickness is 50-200um finally is coated with anode collection layer surface using the tape casting, Form encapsulated layer and the integrated structure of anode pole piece；Further include the preparation of anode composite bed, step 1：Select thickness thin for the flexible polymer of 10um-100um high barriers Layer based on film, uses magnetron sputtering either atomic layer deposition method or chemical vapour deposition technique or physical vaporous deposition The inorganic barrier layer that thickness is 10nm-1um, the flexibility of high barrier are made on the surface of the flexible polymer film of high barrier Thin polymer film and inorganic barrier layer form one high water oxygen separating polymer composite film layer,Step 2：The mode system imprinted again on high water oxygen separating polymer composite film layer using gluing mode or physics The negative pole currect collecting layer that standby a layer thickness is 20-50um,Step 3：Reuse the tape casting and be coated with the negative electrode material layer that a layer thickness is 50-200um in negative pole currect collecting layer surface,Step 4：Finally using spraying coating process negative electrode material layer surface spraying a layer thickness 20-50um dielectric film thin layer, Form encapsulated layer and the integrated structure of cathode pole piece；Finally, light is selected by one circle glue groove of silk-screen printing printing in positive composite layer and anode composite bed encapsulating material edge Glue is learned as fluid sealant, is combined by cold press by positive composite layer and anode are laminated, wherein the temperature of cold press For 30 DEG C, pressure 0.2MPa, time 10min is cold-pressed.
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| CN109088071A (en) * | 2018-08-17 | 2018-12-25 | 深圳新源柔性科技有限公司 | A kind of composite layer and its application |
| CN109309178A (en) * | 2018-09-17 | 2019-02-05 | 苏州清陶新能源科技有限公司 | A kind of flexible lithium ion battery encapsulating material and preparation method thereof |
| CN109768284A (en) * | 2019-03-11 | 2019-05-17 | 江南大学 | A kind of lithium-sulfur cell standalone functionality interlayer and preparation method thereof |
| CN111384448A (en) * | 2018-12-29 | 2020-07-07 | 东泰高科装备科技有限公司 | Flexible lithium ion battery and preparation method thereof |
| CN111384316A (en) * | 2019-12-31 | 2020-07-07 | 武汉瑞科美新能源有限责任公司 | Flexible lithium ion battery packaging film, lithium ion battery packaging method and battery |
| CN112242500A (en) * | 2020-10-16 | 2021-01-19 | 合肥国轩高科动力能源有限公司 | Preparation method of flexible lithium ion battery pole piece |
| CN112968179A (en) * | 2021-02-04 | 2021-06-15 | 珠海冠宇电池股份有限公司 | Current collector composite film and solid-state battery |
| CN114628855A (en) * | 2020-12-11 | 2022-06-14 | 京东方科技集团股份有限公司 | Connection member, flexible battery, electronic device, and manufacturing method |
| CN114695896A (en) * | 2022-03-14 | 2022-07-01 | 电子科技大学 | Self-assembly high-barrier film packaging method of electronic device |
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| CN109088071A (en) * | 2018-08-17 | 2018-12-25 | 深圳新源柔性科技有限公司 | A kind of composite layer and its application |
| CN109309178A (en) * | 2018-09-17 | 2019-02-05 | 苏州清陶新能源科技有限公司 | A kind of flexible lithium ion battery encapsulating material and preparation method thereof |
| CN109309178B (en) * | 2018-09-17 | 2021-11-02 | 苏州清陶新能源科技有限公司 | Packaging material for flexible lithium ion battery and preparation method thereof |
| CN111384448A (en) * | 2018-12-29 | 2020-07-07 | 东泰高科装备科技有限公司 | Flexible lithium ion battery and preparation method thereof |
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| CN109768284A (en) * | 2019-03-11 | 2019-05-17 | 江南大学 | A kind of lithium-sulfur cell standalone functionality interlayer and preparation method thereof |
| CN111384316A (en) * | 2019-12-31 | 2020-07-07 | 武汉瑞科美新能源有限责任公司 | Flexible lithium ion battery packaging film, lithium ion battery packaging method and battery |
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| CN112242500B (en) * | 2020-10-16 | 2021-12-14 | 合肥国轩高科动力能源有限公司 | Preparation method of flexible lithium ion battery pole piece |
| CN114628855A (en) * | 2020-12-11 | 2022-06-14 | 京东方科技集团股份有限公司 | Connection member, flexible battery, electronic device, and manufacturing method |
| CN112968179A (en) * | 2021-02-04 | 2021-06-15 | 珠海冠宇电池股份有限公司 | Current collector composite film and solid-state battery |
| CN114695896A (en) * | 2022-03-14 | 2022-07-01 | 电子科技大学 | Self-assembly high-barrier film packaging method of electronic device |
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