CN205752265U - A kind of lithium battery packaging aluminum plastic film - Google Patents
A kind of lithium battery packaging aluminum plastic film Download PDFInfo
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- CN205752265U CN205752265U CN201620383616.6U CN201620383616U CN205752265U CN 205752265 U CN205752265 U CN 205752265U CN 201620383616 U CN201620383616 U CN 201620383616U CN 205752265 U CN205752265 U CN 205752265U
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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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Abstract
nullThis utility model relates to a kind of lithium battery packaging aluminum plastic film，There is good electrolyte resistance performance、Well processability、Well heat seal strength、Well barrier、Good flatness，Described a kind of lithium battery packaging aluminum plastic film has layer structure，It is by middle aluminum base layer (AL),Up it is sequentially distributed as new function bonding resin layer (AD) from aluminum base layer (AL)、Double-component bonding coating nylon layer (OPA)，Down it is sequentially distributed as new function bonding resin layer (AD) from aluminum base layer (AL)、Homo-polypropylene (PP)、Co-polypropylene layer (CPP)，The new function bonding resin layer that in the middle of this utility model, aluminum base layer is the most symmetrical、Polyurethane two-component adhesive、New function bonding resin layer、Homo-polypropylene layer、Co-polypropylene layer，Its material stress is more uniform，It is of value to drawing and forming，The most important binder resin being this utility model and developing new function，Can the most firmly paste various material.
Description
Technical field
This utility model relates to lithium battery packaging aluminum plastic film technical field, concretely, a kind of lithium battery packaging aluminum plastic film that this utility model relates to.
Background technology
At present, on market, the aluminum plastic film of lithium battery packaging is monopolized by Japanese two companies, although domestic rear a lot of producers are developing, but fails to successfully, the domestic lithium battery flexible packaging aluminum plastic film that market is not the most produced in batches.Flexible package lithium cell owing to its thinnest, area that can do is big, shape can abnormity, do not burn, the packaging of advantage the is widely used in lithium battery such as brisance is minimum.
The upper lithium battery flexible packaging aluminum plastic film of existing market mostly uses dry-lamination process to produce, dry-lamination process is mainly composited various functional membranes and base material aluminium foil by solvent bonding layer, the particularity used due to a kind of lithium battery packaging aluminum plastic film, seek to invade bubble for a long time through electrolyte, it is understood that electrolyte has the strongest corrosivity, electrolyte can produce the extremely strong Fluohydric acid. of corrosivity (HF), possibly together with the ethylene carbonate (EC) that solvability is extremely strong, dimethyl carbonate (DMC), once electrolyte passes through CPP layer, contact with binding agent and aluminium foil, solvent bonding layer can be made to decompose, make to be layered between CPP and AL, AL runs into HF, also can be corroded, make battery leakage, tympanites.So solvent bonding layer is required the highest by the lithium battery flexible packaging aluminum plastic film that dry type is combined, it is difficult to ensure that quality.
Utility model content
The purpose of this utility model is a kind of lithium battery packaging aluminum plastic film using brand-new multilamellar mutual aid casting technology to produce.
For achieving the above object, this utility model adopts the following technical scheme that:
A kind of lithium battery packaging aluminum plastic film, there is good electrolyte resistance performance, well processability, well heat seal strength, well barrier, good flatness, described a kind of lithium battery packaging aluminum plastic film has layer structure, it is by middle aluminum base layer (AL), up it is sequentially distributed as new function bonding resin layer (AD) from aluminum base layer (AL), double-component bonding coating nylon layer (OPA), UV coating, down it is sequentially distributed as new function bonding resin layer (AD) from aluminum base layer (AL), homo-polypropylene (PP), co-polypropylene layer (CPP).
Preferably, described aluminum base layer is that the soft state height of annealed process becomes second nature type aluminium foil, and the thickness of this aluminum base layer is 30～40 microns.
Preferably, described bonding resin layer (AD) thickness 5～8 microns.
Preferably, described double-component bonding coating nylon layer (OPA) thickness is 12～25 microns.
Preferably, the thickness of described UV coating is 3～5 microns.
Preferably, described homo-polypropylene (PP) thickness is 5～70 microns.
Preferably, described co-polypropylene layer (CPP) thickness is 5～10 microns.
Preferably, described lithium battery flexible packaging aluminum plastic film uses five laminar flows to prolong coextrusion, carries out multilamellar mutual aid the tape casting processes.
Beneficial effect: aluminum base layer of the present utility model, has good ductility and has good mechanical property；Double-component bonding coating nylon layer (OPA) protects material as packaging function; there are good electrolyte resistance performance and weatherability; under the adverse circumstances such as high temperature, illumination, humidity bad aging, impact strength is strong, and folding resistance is good; and oil resistant, resistance to olefin(e) acid fatty, resistance to, diluted alkaline; resistance to most of solvent, gas and vapor permeability are low, it is not necessary to patch PET protection film; shock resistance, up to 4～6 millimeters, lowers production cost;Homo-polypropylene (PP) stretching is good with compressive strength and hardness performance, and good rigidly, and heat seal strength is high, has preferable thermostability, corrosion resistance, stable height simultaneously, absorbs water hardly.Additionally, aluminum base layer is the most symmetrical in the middle of this utility model new function bonding resin layer, polyurethane two-component adhesive, new function bonding resin layer, homo-polypropylene layer, co-polypropylene layer, its material stress is more uniform, it is of value to drawing and forming, the most important binder resin being this utility model and developing new function, it is possible to the most firmly paste various material.
Accompanying drawing explanation
Fig. 1 is layer structure schematic diagram of the present utility model.
Detailed description of the invention
Below in conjunction with each specific embodiment and Figure of description, the utility model is described in further detail:
As shown in Figure 1, a kind of lithium battery packaging aluminum plastic film, there is good electrolyte resistance performance, well processability, well heat seal strength, well barrier, good flatness, described a kind of lithium battery packaging aluminum plastic film has layer structure, it is by middle aluminum base layer (AL) 1, up it is sequentially distributed as new function bonding resin layer (AD) 2 from aluminum base layer (AL) 1, double-component bonding coating nylon layer (OPA) 3, UV coating 6, down it is sequentially distributed as new function bonding resin layer (AD) 2 from aluminum base layer (AL) 1, homo-polypropylene (PP) 4, co-polypropylene layer (CPP) 5.Owing to lithium battery flexible package aluminum plastic film material layer structure of the present utility model is distribution, its material stress more uniform ground degree is good, it is simple to packaging uses.
Double-component bonding coating nylon layer (OPA) 3 thickness is 12～25 microns, polyurethane material is the insulation material that performance is best, it is polymerized with hydroxy compounds by isocyanates (monomer), insoluble in non-polar group, there is good oil resistivity, toughness, wearability, resistance to ag(e)ing and cohesive, not hydrolysis, the most not alkali-proof medium under high temperature.
Described homo-polypropylene layer (PP) 4 is main to be had good electrical property and high-frequency insulation and is not affected by humidity, has higher thermostability；Chemical property is good, absorbs water hardly, does not reacts with most chemical drugss；Quality is pure, and avirulence electrical insulating property is good, and ceramics is the material of a kind of high-temperature ceramic coating, and the unit being contained within have the multiple inorganic material such as silicon, aluminum, titanium and oxygen, high temperature resistant, rub resistance, good stability, and hardness is high.
Described new function bonding resin layer (AD) 2 mainly uses the homo-polypropylene (PP) of mass percent 85-95% as base material, with the copolymer (SMA) of mass percent 5-15% phenylethylene-maleic anhydride as activated monomer, use mass ratio 0.3% cumyl peroxide (DCP) as additive, new function bonding resin layer (AD) 2 thickness 5-8 micron, the copolymer (SMA) of phenylethylene-maleic anhydride of the present utility model, the percent grafting overcoming PP grafted maleic anhydride on the market is the highest, cause the shortcoming that binder resin is limited with the bonding force of aluminium.Using SMA as maleic anhydride source, be greatly improved the content of maleic anhydride in PP graft, above-mentioned formula maleic anhydride content is up to 8%, far above other graft；Preferably and the material at low temperature heat sealing performance such as aluminium foil, PET, CPP, PP, casting technique makes its adhesive fastness higher.
Described aluminum base layer 1 is that the soft state height of annealed process becomes second nature type aluminium foil, the thickness of this aluminum base layer 1 is 30～40 microns, co-polypropylene layer (CPP) 5 thickness is 5-10 micron, it is easy to processing and forming, the thickness of described UV coating 6 is 3～5 microns, described lithium battery flexible package aluminum plastic film material uses five laminar flows to prolong coextrusion, carries out the tape casting processing.Produce that product electrolyte resistance performance is good, heat seal strength high smooth, high barrier, not crimping, drawing and forming functional.
It is experimentally confirmed, the aluminum plastic film material of the lithium battery packaging of our utility model uses brand-new multilamellar mutual aid casting technology, the strongest adhesive fastness is had as new function bonding resin layer (AD) 2 and aluminum base layer (AL) 1, double-component bonding coating nylon layer (OPA) 3, homo-polypropylene layer (PP) 4, co-polypropylene layer (CPP) 5, there is the electrolyte resistance performance of excellence simultaneously, there is natural decay resistance, even if electrolyte permeability is to aluminum base layer, do not result in aluminum plastic film layering yet；It is passivated processing at aluminium foil surface simultaneously, improves the resistance to corrosion of aluminium foil itself；Use double-component bonding coating nylon layer (OPA) 3 of good protection, good electrolyte resistance performance, make electrolyte cannot arrive aluminium foil surface through double-component bonding coating nylon layer (OPA) 3；The corrosion resistance of this utility model product reaches following index: electrolyte soaks 85 DEG C 15 days, AL/CPP interlaminar strength >=30N/15mm.In under room temperature, electrolyte is encapsulated in aluminum plastic film, keeping 7 years, material is not stratified.Co-polypropylene layer (CPP) 5 has well from heat sealability, and it can arrive 45-65N/15mm from heat seal strength.
In sum, aluminum base layer of the present utility model (AL) 4, there is good ductility and have good mechanical property；Double-component of the present utility model bonding coating nylon layer (OPA) 3 protects material as packaging function; there are good electrolyte resistance performance and weatherability; under the adverse circumstances such as high temperature, illumination, humidity bad aging, its impact strength is strong, and folding resistance is good; and oil resistant, resistance to olefin(e) acid fatty, resistance to, diluted alkaline; resistance to most of solvent, gas and vapor permeability are low, existing excellent resistance gas and water, oil and abnormal flavour performance; nontoxic, tasteless, wholesomeness is good；And its material stress is uniform, does not haves alice phenomenon during cutting, most important is that this utility model develops new function binder resin, it is possible to the most firmly paste various material.Its production technology uses multilamellar mutual aid casting technology, reduces waste discharge, and the feature of environmental protection is strong.And production process is without in any additive, solvent, and production process and the course of processing, will not produce nuisance.As lithium battery flexible package aluminum plastic film material its to have barrier property strong, all can completely intercept for oxygen, water, there is higher ductility, it is easy to molding, not alice after molding, flatness is good.The most important thing is that also there is good oil resistant and solvent resistance, electrolyte resistance corrode.
The above is only to preferred embodiment of the present utility model; not scope of the present utility model is defined; therefore on the premise of without departing from this utility model design spirit; the equivalence that structure described in the utility model, feature and principle are done by this area ordinary skill technical staff changes or decoration, all should fall in the protection domain that this utility model is applied for a patent.
Claims (7)
1. a lithium battery packaging aluminum plastic film, it is characterized in that: there is good electrolyte resistance performance, well processability, well heat seal strength, well barrier, good flatness, described a kind of lithium battery packaging aluminum plastic film has layer structure, it is by middle aluminum base layer (AL), up it is sequentially distributed as new function bonding resin layer (AD) from aluminum base layer (AL), double-component bonding coating nylon layer (OPA), UV coating, down it is sequentially distributed as new function bonding resin layer (AD) from aluminum base layer (AL), homo-polypropylene (PP), co-polypropylene layer (CPP).
A kind of lithium battery packaging aluminum plastic film the most according to claim 1, it is characterised in that: described aluminum base layer is that the soft state height of annealed process becomes second nature type aluminium foil, and the thickness of this aluminum base layer is 30～40 microns.
A kind of lithium battery packaging aluminum plastic film the most according to claim 1, it is characterised in that: described bonding resin layer (AD) thickness 5～8 microns.
A kind of lithium battery packaging aluminum plastic film the most according to claim 1, it is characterised in that: described double-component bonding coating nylon layer thickness is 12～25 microns.
A kind of lithium battery packaging aluminum plastic film the most according to claim 1, it is characterised in that: the thickness of described UV coating is 3～5 microns.
A kind of lithium battery packaging aluminum plastic film the most according to claim 1, it is characterised in that: described homo-polypropylene (PP) thickness is 5～70 microns.
A kind of lithium battery packaging aluminum plastic film the most according to claim 1, it is characterised in that: described co-polypropylene layer (CPP) thickness is 5～10 microns.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620383616.6U CN205752265U (en) | 2016-04-29 | 2016-04-29 | A kind of lithium battery packaging aluminum plastic film |
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| CN201620383616.6U CN205752265U (en) | 2016-04-29 | 2016-04-29 | A kind of lithium battery packaging aluminum plastic film |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108527970A (en) * | 2017-03-03 | 2018-09-14 | 深圳市金瑞诚电子有限公司 | A kind of aluminum plastic film for lithium ion battery |
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2016
- 2016-04-29 CN CN201620383616.6U patent/CN205752265U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108527970A (en) * | 2017-03-03 | 2018-09-14 | 深圳市金瑞诚电子有限公司 | A kind of aluminum plastic film for lithium ion battery |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190626 Address after: 517100 Triangle Industrial Park, Lianping County, Heyuan City, Guangdong Province Patentee after: Guangdong Saiyang Technology Co.,Ltd. Address before: 517000 Dongyuan New Village Residential Committee, Dongsheng Road, Dongyuan County, Heyuan City, Guangdong Province, No. 67-3 Patentee before: Liao Xueguang |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230628 Address after: Room 702, Building C1, Lingnan Garden, No. 212, Yonghe West Road, Yuancheng District, Heyuan, Guangdong Province, 517000 Patentee after: OuYang Shaobo Address before: 517100 Triangle Industrial Park, Lianping County, Heyuan City, Guangdong Province Patentee before: Guangdong Saiyang Technology Co.,Ltd. |
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Effective date of registration: 20230801 Address after: Building 1, No. 798 Xiecao Road, Xiegang Town, Dongguan City, Guangdong Province, 523000 Patentee after: DONGGUAN JINHENGSHENG NEW MATERIAL TECHNOLOGY Co.,Ltd. Address before: Room 702, Building C1, Lingnan Garden, No. 212, Yonghe West Road, Yuancheng District, Heyuan, Guangdong Province, 517000 Patentee before: OuYang Shaobo |