CN208946819U - A kind of high barrier aluminizer lithium ion battery aluminum plastic film - Google Patents
A kind of high barrier aluminizer lithium ion battery aluminum plastic film Download PDFInfo
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- CN208946819U CN208946819U CN201821022649.3U CN201821022649U CN208946819U CN 208946819 U CN208946819 U CN 208946819U CN 201821022649 U CN201821022649 U CN 201821022649U CN 208946819 U CN208946819 U CN 208946819U
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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
The utility model discloses a kind of high barrier aluminizer lithium ion battery aluminum plastic films, successively include the two-sided aluminium plating membrane of PET, the first adhesive layer, PET single side aluminium plating membrane, the second adhesive layer, pet layer, third adhesive layer and CPP single side aluminium plating membrane；The face of aluminizing of the PET single side aluminium plating membrane is connect with second adhesive layer, and the face of aluminizing of the CPP single side aluminium plating membrane is connect with the third adhesive layer.Seldom there is pin hole in the two-sided aluminium plating membrane of the PET of the utility model, PET single side aluminium plating membrane and CPP single side aluminium plating membrane, can effectively improve barrier property；The two-sided aluminium plating membrane of PET, PET single side aluminium plating membrane and CPP single side aluminium plating membrane have good toughness, are internally pressed with good inhibiting effect；When vacuumizing, it can effectively prevent burr and pierce through two layers of aluminium coated, ensure the safety of battery and service life effectively, meanwhile, the use of aluminium can be reduced, cost is reduced, the effective safety for improving battery and service life.
Description
Technical field
The utility model relates to the plastic-aluminum combined technical field of membrane of power battery Soft Roll more particularly to a kind of high barrier to aluminize
Film lithium ion battery aluminum plastic film.
Background technique
Lithium ion battery is widely applied by continuing to develop with high-energy density, superior high and low temperature environment adaptability
In multiple product.It is packed product and is also gradually converted into plastic-aluminum flexible packing by hard aluminum hull etc., and the flexible package is by high barrier
Aluminium foil and chemical resistance, heat resistance and flexible plastic film are combined.
Lithium ion battery flexible package aluminum plastic film includes the aluminium foil of high barrier, however aluminium foil is less than 0.2mm or less in thickness
When, can inevitably there be pin hole, and thickness is smaller, pin hole is more, and then has seriously affected the barrier property of aluminum plastic film and close
Feng Xing, the product yield also reduced.At present for the pin hole of reduction aluminium foil there is no effective implementation method, less company exists
The processing methods such as plasma arc sprayed-on Al layer and plasma passivation film.
Flexible package aluminum plastic film has flexibility, in lithium battery use process, can discharge unexpected generate caused by gas
Pressurization, however be easy for making aluminium foil to generate micro-crack once generating and being bubbled after long-term use, in turn result in the leakage of interior liquid
Even explode.It is heat-shrinked film layer or porous buffering film layer currently, there is company to increase and then inhibits to generate the internal pressure being bubbled.
There is the burr of copper mesh and aluminium net on polymer lithium ion battery core periphery, and when vacuumizing contraction, burr can jab interior
Film may pierce through inner membrance until aluminium foil accelerates electrochemistry then straight-through aluminium foil is caused pit corrosion by the hydrofluoric acid in battery core
Corrosion, changes the composition of electrolyte, wears aluminium foil corrosion and leakage when serious, while will also result in short circuit, battery is caused to be scrapped.
Currently, it is domestic not to this effective processing method, there are patent notes to be aluminized to aluminium foil progress surface to protect the side of aluminium foil
Method.
Currently, soft-package battery it is more and more extensive be used for power vehicle field.Lithium-ion-power cell is because of its excellent function
The advantages that rate output characteristics and long service life, obtains applications well in batteries of electric automobile packet at present.But lithium ion power is electric
The performance in pond is more sensitive to temperature change, especially large capacity used in power vehicle, high-power LiFePO4 (Li Fe
PO4) lithium ion battery.Loading space is limited inside power vehicle, and number of battery cells needed for vehicle is larger, and battery is close-packed arrays
Connection.When vehicle is run under the different driving conditions of the checkers such as high speed, low speed, acceleration, deceleration, battery can be with difference
Multiplying power discharging generates amount of heat with different heat rates, in addition accumulated time and spacial influence can generate uneven heat
Amount aggregation.If the battery pack of electric car cannot radiate in time at high temperature, it will cause battery pack system temperature excessively high or
Temperature distribution is non-uniform by person, and reduces battery charging and discharging cycle efficieny, also will lead to thermal runaway when serious, influences the safety of battery
Property and reliability.Therefore in order to make battery pack play optimum performance, extend the service life, need to optimize the structure of battery pack, to battery
Packet carries out heat management, increases cooling facilities, controls the temperature environment of battery operation.Power vehicle especially pure electric automobile and string
Connection formula mixes electrical automobile, and cell p ack is radiated by the way of liquid cooling, and radiating efficiency is high, cooling velocity is fast, to meet
The needs of high-power charge and discharge.Therefore the anti-hydrolytic performance of Soft Roll material is required very high.Existing implementation is all made of fluorine
Carbons coating adds waterproof layer to improve the waterproofness of aluminum plastic film, and this kind of implementation is mainly the infiltration for preventing vapor
And it designs, and can not work in liquid cooling system well.
Currently, the outer layer of domestic lithium battery Soft Roll material (aluminum-plastic composite membrane) is nylon (Ny) or polyester (PET)
Nylon co-extrusion layer.Ny is a kind of material of very easy water suction, especially in certain temperature because containing hydrophilic group (amide groups)
Under, intolerant to hot-water soak, it is easy to happen degradation.Outer layer is the aluminum-plastic composite membrane of Ny or PET, is assembled into after cell p ack,
It is immersed in waterborne liquid for a long time at a certain temperature, can generate that interlaminar separation, moisture intrusion, leakage etc. are a series of to ask
Topic, to destroy battery structure.Therefore soft package lithium battery pack can not use liquid-cooled battery thermal management system, cause heat transfer
It is inefficient, it is unable to satisfy the demand of the high-power charge and discharge of power battery.
Utility model content
In view of above-mentioned defect existing in the prior art, the purpose of this utility model is to propose a kind of high barrier aluminizer
Lithium ion battery aluminum plastic film.
To achieve the goals above, the utility model adopts the technical scheme that
A kind of high barrier aluminizer lithium ion battery aluminum plastic film successively includes the two-sided aluminium plating membrane of PET, the first gluing
Layer, PET single side aluminium plating membrane, the second adhesive layer, pet layer, third adhesive layer and CPP single side aluminium plating membrane；The PET single side plating
The face of aluminizing of aluminum membranous layer is connect with second adhesive layer, aluminize face and the third gluing of the CPP single side aluminium plating membrane
Layer connection.
Further, the two-sided aluminium plating membrane of the PET with a thickness of 25 μm -30 μm, aluminize for double-face vacuum, have it is high
Barrier property has high barrier property to gas, vapor, can be used for power battery pack liquid cooling.
Further, first adhesive layer is made of Aqueous Polyurethane Adhesives, can effectively be bonded PET, is made multiple
It is higher to close interlaminar strength.
Further, the PET single side aluminium plating membrane with a thickness of 15 μm -25 μm.
Further, second adhesive layer is made of Aqueous Polyurethane Adhesives.
Further, the pet layer with a thickness of 25 μm -50 μm.
Further, the third adhesive layer is made of Aqueous Polyurethane Adhesives.
Further, the CPP single side aluminium plating membrane with a thickness of 40 μm -80 μm.
Further, the outer surface of the two-sided aluminium plating membrane of the PET is pasted with protective film layer by the 4th adhesive layer, described
4th adhesive layer is made of adhesive for polyurethane or acrylic compounds adhesive, and the protective film layer is by polypropylene, polyethylene, cyclenes
One of hydrocarbon type copolymer or more than one co-extrusion object constitute, the protective film layer with a thickness of 15 μm -25 μm.
The protrusion effect of the utility model are as follows:
A kind of high barrier aluminizer lithium ion battery aluminum plastic film of the utility model, Aqueous Polyurethane Adhesives have
Fabulous cementability, and aqueous polyurethane is solvent-free, and use is safe, meets Green Chemistry；The two-sided aluminium plating membrane of PET, PET are mono-
Seldom there is pin hole in face aluminium plating membrane and CPP single side aluminium plating membrane, can effectively improve barrier property；The two-sided aluminium plating membrane of PET,
PET single side aluminium plating membrane and CPP single side aluminium plating membrane have good toughness, are internally pressed with good inhibiting effect；It takes out true
When empty, it can effectively prevent burr and pierce through two layers of aluminium coated, ensure the safety of battery and service life effectively, meanwhile,
The use that aluminium can be reduced, reduces cost, the effective safety for improving battery and service life.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model embodiment 1-3；
Fig. 2 is the structural schematic diagram of the utility model embodiment 4-6.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.
Embodiment 1
As shown in Figure 1, a kind of high barrier aluminizer lithium ion battery aluminum plastic film of the present embodiment, it is characterised in that:
It successively include the two-sided aluminium plating membrane 1 of PET, the first adhesive layer 2, PET single side aluminium plating membrane 3, the second adhesive layer 4, pet layer 5, third
Adhesive layer 6 and CPP single side aluminium plating membrane 7；The face of aluminizing of PET single side aluminium plating membrane 1 is connect with the second adhesive layer 2, the plating of CPP single side
The face of aluminizing of aluminum membranous layer 7 is connect with third adhesive layer 6.
The two-sided aluminium plating membrane 1 of PET with a thickness of 25 μm.
First adhesive layer 2 is made of Aqueous Polyurethane Adhesives.
PET single side aluminium plating membrane 3 with a thickness of 15 μm.
Second adhesive layer 4 is made of Aqueous Polyurethane Adhesives.
Pet layer 5 with a thickness of 25 μm.
Third adhesive layer 6 is made of Aqueous Polyurethane Adhesives.
CPP single side aluminium plating membrane 7 with a thickness of 40 μm.
Embodiment 2
As shown in Figure 1, a kind of high barrier aluminizer lithium ion battery aluminum plastic film of the present embodiment, it is characterised in that:
It successively include the two-sided aluminium plating membrane 1 of PET, the first adhesive layer 2, PET single side aluminium plating membrane 3, the second adhesive layer 4, pet layer 5, third
Adhesive layer 6 and CPP single side aluminium plating membrane 7；The face of aluminizing of PET single side aluminium plating membrane 1 is connect with the second adhesive layer 2, the plating of CPP single side
The face of aluminizing of aluminum membranous layer 7 is connect with third adhesive layer 6.
The two-sided aluminium plating membrane 1 of PET with a thickness of 30 μm.
First adhesive layer 2 is made of Aqueous Polyurethane Adhesives.
PET single side aluminium plating membrane 3 with a thickness of 25 μm.
Second adhesive layer 4 is made of Aqueous Polyurethane Adhesives.
Pet layer 5 with a thickness of 50 μm.
Third adhesive layer 6 is made of Aqueous Polyurethane Adhesives.
CPP single side aluminium plating membrane 7 with a thickness of 80 μm.
Embodiment 3
As shown in Figure 1, a kind of high barrier aluminizer lithium ion battery aluminum plastic film of the present embodiment, it is characterised in that:
It successively include the two-sided aluminium plating membrane 1 of PET, the first adhesive layer 2, PET single side aluminium plating membrane 3, the second adhesive layer 4, pet layer 5, third
Adhesive layer 6 and CPP single side aluminium plating membrane 7；The face of aluminizing of PET single side aluminium plating membrane 1 is connect with the second adhesive layer 2, the plating of CPP single side
The face of aluminizing of aluminum membranous layer 7 is connect with third adhesive layer 6.
The two-sided aluminium plating membrane 1 of PET with a thickness of 28 μm.
First adhesive layer 2 is made of Aqueous Polyurethane Adhesives.
PET single side aluminium plating membrane 3 with a thickness of 20 μm.
Second adhesive layer 4 is made of Aqueous Polyurethane Adhesives.
Pet layer 5 with a thickness of 40 μm.
Third adhesive layer 6 is made of Aqueous Polyurethane Adhesives.
CPP single side aluminium plating membrane 7 with a thickness of 60 μm.
Embodiment 4
As shown in Fig. 2, a kind of high barrier aluminizer lithium ion battery aluminum plastic film of the present embodiment, it is characterised in that:
It successively include the two-sided aluminium plating membrane 1 of PET, the first adhesive layer 2, PET single side aluminium plating membrane 3, the second adhesive layer 4, pet layer 5, third
Adhesive layer 6 and CPP single side aluminium plating membrane 7；The face of aluminizing of PET single side aluminium plating membrane 1 is connect with the second adhesive layer 2, the plating of CPP single side
The face of aluminizing of aluminum membranous layer 7 is connect with third adhesive layer 6.
The two-sided aluminium plating membrane 1 of PET with a thickness of 25 μm.
First adhesive layer 2 is made of Aqueous Polyurethane Adhesives.
PET single side aluminium plating membrane 3 with a thickness of 15 μm.
Second adhesive layer 4 is made of Aqueous Polyurethane Adhesives.
Pet layer 5 with a thickness of 25 μm.
Third adhesive layer 6 is made of Aqueous Polyurethane Adhesives.
CPP single side aluminium plating membrane 7 with a thickness of 40 μm.
The outer surface of the two-sided aluminium plating membrane 1 of PET is pasted with protective film layer 9 by the 4th adhesive layer 8, the 4th adhesive layer 8 by
Adhesive for polyurethane is constituted, and protective film layer 9 is made of polypropylene, protective film layer 9 with a thickness of 15 μm.
Embodiment 5
As shown in Fig. 2, a kind of high barrier aluminizer lithium ion battery aluminum plastic film of the present embodiment, it is characterised in that:
It successively include the two-sided aluminium plating membrane 1 of PET, the first adhesive layer 2, PET single side aluminium plating membrane 3, the second adhesive layer 4, pet layer 5, third
Adhesive layer 6 and CPP single side aluminium plating membrane 7；The face of aluminizing of PET single side aluminium plating membrane 1 is connect with the second adhesive layer 2, the plating of CPP single side
The face of aluminizing of aluminum membranous layer 7 is connect with third adhesive layer 6.
The two-sided aluminium plating membrane 1 of PET with a thickness of 30 μm.
First adhesive layer 2 is made of Aqueous Polyurethane Adhesives.
PET single side aluminium plating membrane 3 with a thickness of 25 μm.
Second adhesive layer 4 is made of Aqueous Polyurethane Adhesives.
Pet layer 5 with a thickness of 50 μm.
Third adhesive layer 6 is made of Aqueous Polyurethane Adhesives.
CPP single side aluminium plating membrane 7 with a thickness of 80 μm.
The outer surface of the two-sided aluminium plating membrane 1 of PET is pasted with protective film layer 9 by the 4th adhesive layer 8, the 4th adhesive layer 8 by
Acrylic compounds adhesive is constituted, and protective film layer 9 is made of the co-extrusion object of polypropylene, polyethylene, protective film layer 9 with a thickness of 25 μ
m。
Embodiment 6
As shown in Fig. 2, a kind of high barrier aluminizer lithium ion battery aluminum plastic film of the present embodiment, it is characterised in that:
It successively include the two-sided aluminium plating membrane 1 of PET, the first adhesive layer 2, PET single side aluminium plating membrane 3, the second adhesive layer 4, pet layer 5, third
Adhesive layer 6 and CPP single side aluminium plating membrane 7；The face of aluminizing of PET single side aluminium plating membrane 1 is connect with the second adhesive layer 2, the plating of CPP single side
The face of aluminizing of aluminum membranous layer 7 is connect with third adhesive layer 6.
The two-sided aluminium plating membrane 1 of PET with a thickness of 28 μm.
First adhesive layer 2 is made of Aqueous Polyurethane Adhesives.
PET single side aluminium plating membrane 3 with a thickness of 20 μm.
Second adhesive layer 4 is made of Aqueous Polyurethane Adhesives.
Pet layer 5 with a thickness of 40 μm.
Third adhesive layer 6 is made of Aqueous Polyurethane Adhesives.
CPP single side aluminium plating membrane 7 with a thickness of 60 μm.
The outer surface of the two-sided aluminium plating membrane 1 of PET is pasted with protective film layer 9 by the 4th adhesive layer 8, the 4th adhesive layer 8 by
Adhesive for polyurethane is constituted, and protective film layer 9 is made of polypropylene, polyethylene, cyclenes hydrocarbon type copolymer co-extrusion object, protective film layer 9
With a thickness of 20 μm.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this
Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model
Within enclosing.
Claims (9)
1. a kind of high barrier aluminizer lithium ion battery aluminum plastic film, it is characterised in that: successively include the two-sided aluminizer of PET
Layer, the first adhesive layer, PET single side aluminium plating membrane, the second adhesive layer, pet layer, third adhesive layer and CPP single side aluminium plating membrane；Institute
The face of aluminizing for stating PET single side aluminium plating membrane is connect with second adhesive layer, aluminize face and the institute of the CPP single side aluminium plating membrane
State the connection of third adhesive layer.
2. a kind of high barrier aluminizer lithium ion battery aluminum plastic film according to claim 1, it is characterised in that: described
The two-sided aluminium plating membrane of PET with a thickness of 25 μm -30 μm.
3. a kind of high barrier aluminizer lithium ion battery aluminum plastic film according to claim 1, it is characterised in that: described
First adhesive layer is made of Aqueous Polyurethane Adhesives.
4. a kind of high barrier aluminizer lithium ion battery aluminum plastic film according to claim 1, it is characterised in that: described
PET single side aluminium plating membrane with a thickness of 15 μm -25 μm.
5. a kind of high barrier aluminizer lithium ion battery aluminum plastic film according to claim 1, it is characterised in that: described
Second adhesive layer is made of Aqueous Polyurethane Adhesives.
6. a kind of high barrier aluminizer lithium ion battery aluminum plastic film according to claim 1, it is characterised in that: described
Pet layer with a thickness of 25 μm -50 μm.
7. a kind of high barrier aluminizer lithium ion battery aluminum plastic film according to claim 1, it is characterised in that: described
Third adhesive layer is made of Aqueous Polyurethane Adhesives.
8. a kind of high barrier aluminizer lithium ion battery aluminum plastic film according to claim 1, it is characterised in that: described
CPP single side aluminium plating membrane with a thickness of 40 μm -80 μm.
9. a kind of high barrier aluminizer lithium ion battery aluminum plastic film according to claim 1, it is characterised in that: described
The outer surface of the two-sided aluminium plating membrane of PET is pasted with protective film layer by the 4th adhesive layer, and the 4th adhesive layer is by polyurethane adhesive
Glutinous agent or acrylic compounds adhesive are constituted, the protective film layer by one of polypropylene, polyethylene, cyclenes hydrocarbon type copolymer or
More than one co-extrusion object is constituted, the protective film layer with a thickness of 15 μm -25 μm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821022649.3U CN208946819U (en) | 2018-06-29 | 2018-06-29 | A kind of high barrier aluminizer lithium ion battery aluminum plastic film |
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|---|---|---|---|
| CN201821022649.3U CN208946819U (en) | 2018-06-29 | 2018-06-29 | A kind of high barrier aluminizer lithium ion battery aluminum plastic film |
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| CN208946819U true CN208946819U (en) | 2019-06-07 |
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| CN201821022649.3U Active CN208946819U (en) | 2018-06-29 | 2018-06-29 | A kind of high barrier aluminizer lithium ion battery aluminum plastic film |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113471580A (en) * | 2021-06-01 | 2021-10-01 | 武汉泰宇汽车零部件有限公司 | Battery case and battery |
-
2018
- 2018-06-29 CN CN201821022649.3U patent/CN208946819U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113471580A (en) * | 2021-06-01 | 2021-10-01 | 武汉泰宇汽车零部件有限公司 | Battery case and battery |
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| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 213000 No.20 Changyang Road, West Taihu science and Technology Industrial Park, Wujin District, Changzhou City, Jiangsu Province Patentee after: Xinlun new energy materials (Changzhou) Co.,Ltd. Address before: 213000 No.20 Changyang Road, West Taihu science and Technology Industrial Park, Wujin District, Changzhou City, Jiangsu Province Patentee before: SELEN COMPOSITE MATERIAL (CHANGZHOU) CO.,LTD. |
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