CN209461492U - New-energy automobile - Google Patents
New-energy automobile Download PDFInfo
- Publication number
- CN209461492U CN209461492U CN201721118975.XU CN201721118975U CN209461492U CN 209461492 U CN209461492 U CN 209461492U CN 201721118975 U CN201721118975 U CN 201721118975U CN 209461492 U CN209461492 U CN 209461492U
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- aluminium foil
- aluminium
- battery
- plastic film
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- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 285
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Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Laminated Bodies (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model provides new-energy automobile, and it includes there is soft-package battery, the packaging material of the battery includes the plastic layer of aluminium layer and inner surface, and plastic layer is only compound in the inside of aluminium layer, and inside plastic layer is thermoplastic resin membrane；Wherein, aluminium layer has core material skin material, and core material is fine aluminium or ferro-aluminum aluminium alloy, and outside skin material is aluminium allumen.The new energy vehicle of the utility model has efficient cooling method, and significantly improves the against corrosion, particularly pitting corrosion resistant performance of battery case.
Description
Technical field
The utility model relates to the new-energy automobiles with soft-package battery heat control device, in particular to having can be soaked in
The Vehicular dynamic battery field and energy-storage battery field of soft-package battery heat control device in cooling water.
Background technique
Thermal management technology is one of the core technology of Soft Roll power battery, has many thermal management technology sides in the art
Case and effort, but heat management problems are still to restrict one of the bottleneck problem of industry development, the demand to High Efficiency Thermal management according to
It is so very urgent.Be more in the existing soft-package battery type of cooling it is air-cooled, also have oily cold and water cooling；Such as
The water-cooling project introduced in CN201210016348.0 and this is changed using water-cooled plate or cooling tube and battery contact heat-exchanging
Thermal contact resistance is high between cooling water and battery in hot mode, heat transfer link is more, heat exchange efficiency is low；As introduced in CN202550023U
Although the cold scheme temperature uniformity of immersion type oil obtained a degree of raising, the poor fluidity of insulating oil, heat exchange effect
Rate is low, and there are also the problems such as after-sales service to exist.
Immersion water-cooled research is also begun in the prior art, and cooling efficiency can compared to pervious contactless water cooling
It significantly improves, however, the prolonged erosion of aluminum plastic film is still problem to be solved.Soft-package battery is packed in the prior art
Aluminum plastic film generally use 8 line aluminium alloy aluminium foils, be soft aluminium foil, scouring depth good moldability after this aluminum foil annealing.According to 3 systems
Aluminum alloy foil, anti-face corrosivity can have certain improvement.Current battery packaging material is primary concern is that electrolyte-resistant corrodes
Property, main technical schemes be packaging material towards the side of electrolyte by physically or chemically mode it is modified formed it is corrosion-resistant
Layer, effect is to prevent electrolyte corrosion aluminium foil inner surface and lead to aluminum plastic film splitting.Existing aluminum plastic film outermost layer is basic
On all containing the protections plastic foil such as polyamide.
Utility model content
Based on current high capacity cell heat management problems be still restrict industry development bottleneck problem, the utility model from
The cooling demand of soft-package battery is set out, and in order to obtain higher battery cooling performance, the utility model is courageously used Soft Roll electricity
Pond is directly soaked in the cooling scheme in cooling water.However, by furtheing investigate and just being found after test for a long time, existing battery pack
Package material does not adapt to this immersion water-cooled requirement, and it is anti-that existing soft-package battery is packed for outermost nylon protective layer in aluminum plastic film
Ethylene glycol antifreeze corrosive nature is poor, and the aluminium foil as water blocking layer is alfer, mechanical strength and anti-ethylene glycol antifreeze
Corrosive nature (especially corrosion resistance) is also poor, even if it uses traditional technological means, (such as aluminium foil surface does anti-corrosion painting
Layer processing) it is also easy to appear spot corrosion, therefore existing aluminum plastic film is not able to satisfy long-term immersion water-cooled system requirements.In order to overcome
Drawbacks described above, the utility model creatively provide following new battery cooling system scheme and battery packaging material scheme, with
It solves the problems, such as above-mentioned series technique and meets the thermal management requirements of the high capacity cells system such as used in new energy vehicles or energy storage use.
Under the premise of taking into account aluminum plastic film foil moulding ability, while in the prior art for battery pack
(battery) the resistance to automotive antifreezing coolant of aluminum plastic film (abbreviation anti-icing fluid, main component are ethylene glycol and water) or resistance to cooling
The insufficient defect of the corrosion resistance of water, that is, the defect for the perforation that is easy to be corroded, the utility model, which provides one kind, can be used for lithium
Ion secondary battery is packed for aluminum-plastic composite membrane (hereinafter referred to as aluminum plastic film), with higher resistance to cooling corrosion ability.
Single layer aluminium alloy corrosion stability in existing aluminum plastic film is insufficient, and especially corrosion resistance is poor.In order to improve plastic-aluminum
Etch state of the aluminium foil in cooling water in film is better protected from spot corrosion, and the utility model, which preferably provides to have, sacrifices sun
The composite layer aluminium foil of pole function is as aluminium foil in aluminum plastic film.Further, on the basis of improving etch state, the utility model
More preferably providing has the composite layer aluminium foil of preferable deformability as aluminium foil in aluminum plastic film.
The utility model first aspect is to provide a kind of battery formed by metallo-plastic laminated film, preferably Soft Roll
Battery use packing material (preferably aluminum plastic film), including metal foil layer (preferably aluminium foil layer) and it is compound in metal foil layer (preferably
For aluminium foil layer) plastic layer of inner surface.
The utility model the second aspect is to provide a kind of soft-package battery, includes electrode material and electrolyte and outside
The above-mentioned metallo-plastic laminated film (preferably aluminum plastic film) of package, metal foil layer (preferably aluminium foil layer) inner surface
Plastic layer electrolyte is isolated with metal foil layer (preferably aluminum plastic film).Preferably, the electrolyte includes hexafluorophosphoric acid
Lithium and/or LiBF4 (LiBF4)。
It is to provide a kind of battery heat control device in terms of the utility model third, preferably soft-package battery thermal control fills
It sets, includes above-mentioned soft-package battery.The soft-package battery can be used the immersion corrosion of resistance to coolant liquid above-mentioned laminated aluminum film it
Afterwards, which can be immersed in coolant liquid (such as anti-freeze cooling liquid), it is preferable that described by metallo-plastic laminated film
The battery use packing material of formation is immersed in the coolant liquid, it is highly preferred that the metal foil layer (preferably aluminium foil layer) soaks
Bubble is in the coolant liquid, so that metal foil layer directly can carry out heat exchange with coolant liquid.The heat transfer effect of battery is more in this way
It is good, and the more uniform temperature of battery up and down everywhere.
The 4th aspect of the utility model is to provide a kind of method using the cooling battery unit of heat control device.
The aspect of the utility model the 5th is to provide described in a kind of manufacture to be used by the battery that metallo-plastic laminated film is formed
The method of packaging material, preferably aluminum plastic film.
The aspect of the utility model the 6th is to provide a kind of electrical equipment and generating equipment, the electrical equipment and generating equipment
It include any of the above-described kind of battery and/or any battery heat control device.
The utility model also provides a kind of vehicles and energy storage device, and the vehicles and energy storage device include above-mentioned
Soft-package battery and/or above-mentioned soft-package battery heat control device.
Lower mask body introduces technical solution.
If not specified, in the utility model it is so-called it is corrosion-resistant each mean resistance to cooling water or antifreeze corrosion, rather than
Refer to electrolyte resistance corrosion.The technological means for the resistance to cooling water corrosion that the utility model uses is rotten also different from traditional electrolyte resistance
The technological means of erosion.
In a kind of preferred embodiment of aluminum plastic film of the utility model, aluminium foil layer is composite layer, and aluminium foil layer includes core
Material and the skin material on the outside of core material, the corrosion potential of the skin material of aluminium foil layer are lower than the corrosion potential of core material.It is highly preferred that described
Core material is located between the plastic layer and skin material on the inside of aluminium foil layer.It is furthermore preferred that in the battery heat control device, packaging Soft Roll electricity
The skin material of the aluminum plastic film aluminium foil in pond is immersed directly in the coolant liquid.
It should be noted that core material is to be located inside for skin material, skin material is outside being located at for core material
Side.In the composite layer aluminium foil of the utility model, especially for the aluminium foil with multilayer either for by elements diffusion
In contrast aluminium foil after reason, core material and skin material not absolute definition or apparent boundary, the two are.This
Outside, aluminium alloy skin material is referred to as sacrificial aluminium alloy layer or aluminium alloy water-touching layer.
The aluminum plastic film of the utility model is the film composite material of a kind of plastic foil and the formation of aluminium foil film, is as polymer
Packaging material for lithium battery.
In aluminum plastic film, it can be and be compounded with plastic layer inside and outside aluminium foil layer.But preferably, the aluminum plastic film is by position
Thermoplastic resin membrane in inside and the aluminium foil layer positioned at outside are compounded to form, i.e., plastic layer is only compound in the interior of aluminium foil layer
Side, and without plastic layer on the outside of the aluminium foil layer of the aluminum plastic film.Compound method either dry laminating to be also possible to thermal method compound.
Wherein, include following situation in above scheme: being compound in the plastic layer of a certain side surface of aluminium foil layer, either monolayer plastic,
It is also possible to laminated plastics.It is so-called in the utility model that " aluminum plastic film is by being located at the thermoplastic resin membrane of inside and being located at outer
The aluminium foil layer of side is compounded to form " this means that without plastic layer on the outside of aluminium foil layer, but the thermoplastic resin membrane of inside and outside
Can there are adhesive phase or anti-acid layer between aluminium foil layer.
Further, the inside plastic layer is preferably thermoplastic resin membrane.For example, polypropylene (PP) film or poly- second
Alkene (PE) film.Wherein, the thickness of inside plastic layer is chosen as 50-300 microns, and preferably greater than 60 less than 100 microns, more
Preferably 70-90 microns.The inside plastic layer is also possible to hot sealing layer or sealant.Preferably, the inside plastic layer is poly-
Olefin resin or acid-modified polyolefin resin.Various additives can also be cooperated in the inside plastic layer, such as fire retardant, lubrication
One or more of agent, anti-blocking agent, antioxidant, light stabilizer, adhesion imparting agent.
Preferably inside plastic layer has better electrical insulation characteristics, so that withstand voltage value is higher, for example proof voltage is preferred
Greater than 1000V, it is more highly preferred to be greater than 2000V.
If the outside plastic layer is preferably heat-resistant resin film containing outside plastic layer.Such as polyamide (PA) or
Nylon (Ny or ON) film or polyester (PET) film or polyimides (PI) film.
In addition, above-mentioned composite layer aluminium alloy, preferably at least including core material and the skin material being compound on the outside of core material.Composite layer
Aluminium alloy can be the different aluminium alloy of two layer components, be also possible to the different aluminium alloy of multilayer component.
The above-mentioned aluminum plastic film of the utility model, can be including A)-C) in any one structure:
A) aluminum plastic film has by inside heat sealing layer, intermetallic metal layers of foil and outside plastic protective layer complex
At laminated body, wherein middle metal foil is preferably aluminium foil, and intermediate aluminium foil layer more preferably has a galvanic anode protection protective function
Composite layer aluminium foil is formed.For example, the composite layer aluminium foil is formed by core material and corrosion potential lower than the skin material of core material.
B) aluminum plastic film has the laminated body being compounded to form by inside heat sealing layer and outside metal foil layer, wherein
Outside metal foil is preferably aluminium foil, and outside aluminium foil layer more preferably there is the composite layer aluminium foil of galvanic anode protection protective function to be formed.
The aluminum plastic film does not contain outside plastic protective layer.
C) aluminum plastic film has successively by inside heat sealing layer, middle metal foil, intermediate insulation resin layer and outer
The laminated body that side metal foil is compounded to form.Wherein, middle metal foil and outside metal foil can be respectively selected as aluminium foil or stainless steel
Foil or copper foil, more preferably aluminium foil.Inside heat sealing layer plays heat-sealing.Intermediate aluminium foil can play barrier inside substance
(such as electrolyte or conductive ion) outside osmosis.Intermediate insulation resin layer can play insulating effect, so that electrolyte and outer
Dielectric strength between the aluminium foil of side meets electrical safety needs.Outside aluminium foil can play resistance to cooling water corrosion effect, while can hinder
Every exterior materials (such as steam) endosmosis；The outside aluminium foil may be selected to be the single layer aluminium foil of resistance to cooling water corrosion, preferably have
There is the composite layer aluminium foil of sacrificial anode function, further preferably core material is fine aluminium or ferro-aluminum aluminium alloy in composite layer aluminium foil, is answered
The outside skin material for closing layer aluminium foil is aluminium allumen.For the aluminum plastic film of program C, if not specified, it is following about
The explanation of aluminium foil or restriction refer both to outside aluminium foil, rather than intermediate aluminium foil.
Wherein, dry laminating in the prior art may be selected in the complex method of each layer of aluminum plastic film, and more preferably thermal method is compound.
The heat sealing layer of inside is also possible to thermoplastic resin film layer, and it is thin that the plastic protective layer in outside is also possible to heat-resistant resin
Film layer.
The corrosion potential of skin material is 5mV-500mV lower than the corrosion potential of core material in composite layer aluminium foil.Further, skin material
Corrosion potential is 50mV-500mV lower than the corrosion potential of core material.Preferably, the corrosion potential of skin material is lower than the corrosion potential of core material
70mV-200mV.It is further preferable that the corrosion potential of skin material is 100mV-170mV lower than the corrosion potential of core material.Above-mentioned potential difference
Refer to the potential difference before compound or before heat treatment.
The utility model composite layer aluminium foil is obtained by the way that core material and skin material are stacked Rolling compund.Preferably, this is practical new
Composite layer aluminium foil described in type by core material and skin material it is compound after, then between core material and skin material carry out elements diffusion processing.Element expands
The means for dissipating processing can be the high temperature anneal.Being handled by above-mentioned elements diffusion may make that each element contains in composite layer aluminium foil
Amount is continuously changed stepwise in a thickness direction, this may make corrosion to more tend to slow banded corrosion.Own in the utility model
Composite layer aluminium foil has already been through above-mentioned elements diffusion processing before it is compounded to form aluminum plastic film with plastic layer.
If metal composite interlayer is compound only with plating or the mode rolled, does not carry out elements diffusion processing, interlayer member
Cellulose content mutation, interlayer potential jump, the fast erosion that will lead to composite layer flood when it corrodes in cooling water is detached from, rotten
Erosion speed is even fast to cross single-layer metal.So the utility model preferably carries out elements diffusion processing to metal composite interlayer.Separately
Outside, the composite layer used different from heat exchanger, since heat exchanger need to that is to say elements diffusion by high temperature brazing, the process of soldering
Process, therefore heat exchanger composite layer aluminium foil is handled using special elements diffusion is not needed preceding, and the utility model aluminum plastic film
There is no above-mentioned brazing process with composite layer aluminium foil, therefore it is preferred that needs the compound interlayer elements diffusion technique of special aluminium foil.
The manufacturing method of composite layer aluminium alloy described in the utility model comprising following steps:
1) core alloy and skin material alloy are manufactured respectively by element proportion；
2) keep core alloy and skin material alloy compound by rolling.
In an embodiment of the utility model, above-mentioned steps 2) include: the homogenization optionally implemented, milling face, answer
Conjunction, heating, hot rolling, cold rolling and intermediate annealing.Then, finish rolling is rolled to finished product thickness.Finally, carrying out element to composite layer aluminium foil
Diffusion annealing handles to obtain the aluminium foil of use state, and manufacture aluminum plastic film is used in combination with plastic layer for subsequent.
The manufacturing method of composite layer aluminium foil described in the utility model can refer to the system of the composite layer aluminium foil of aluminothermy transmission industry
Method is made, such as referenced patent document CN201210046167.2 (notification number CN103290279B) or patent document
CN201410853490.X (notification number CN104626675B).
In the utility model, if not specified, corrosion potential is referred both to as the corrosion electricity under water base cooling pendular ring border
Position.The reasonable current potential of skin material and core material is matched with the spot corrosion for being conducive to avoid aluminium foil (especially core material) in clad aluminum foil.It can
To adjust the corrosion potential of aluminium alloy, zinc in aluminium alloy constituent content by the Zn-ef ficiency for adding different content into aluminium alloy
Higher, corrosion potential is lower.
If not specified in the utility model, the cooling water and the coolant liquid refer both to water base coolant liquid.So-called water
Base coolant liquid refers to the coolant liquid using water as basis.It can also be to include various antifreezing agents (ratio in water base coolant liquid
Such as ethyl alcohol, ethylene glycol, propylene glycol) to form the anti-icing fluid with antifreeze function.So the coolant liquid of the utility model includes
There is following type: pure water, ethylene glycol and mixed liquor of water etc..
As a preferred embodiment, the core material of above-mentioned clad aluminum layers of foil is formed by corrosion resistant aluminum alloy or fine aluminium.It is described
Fine aluminium includes commercial-purity aluminium and rafifinal.In the fine aluminium aluminium content preferably >=99.0%, more preferably 99.0%-
99.99%.
Corrosion resistant aluminum alloy described in the utility model refers in the environment of directly contacting with coolant liquid, aluminium alloy
Normal function can be kept without failing for a long time with aluminum plastic film, such as the not cooled corrosion perforation of aluminium alloy.Described in wherein " no
Failure " includes that the electric insulation functions of aluminum plastic film do not fail and water vapor rejection function does not also fail.Its performance although declining in the amount of having
Subtract, but still is able to satisfy basic demand.It is wherein so-called " long-term ", refer to that product (such as automobile or automobile power battery) is normal
Life cycle duration, such as service life are greater than 5 years, preferably greater than 10 years, are more highly preferred to be greater than 15 years.
If aluminium foil layer is composite layer, it is compounded to form by core material and skin material, core material is located inside, and skin material is located at outside, and skin
The corrosion potential of material is lower than the corrosion potential of (or being defeated by) core material.Be corrosive media contact when, it is rotten to form electrochemistry
Erosion, skin material protect the core material as cathode as the anode being sacrificed, so that it is guaranteed that the aluminium foil layer in aluminum plastic film can be long-term resistance to
Water base cooling corrosion, and then ensure the service life of battery.Wherein, skin material can be single layer aluminium, be also possible to multilayer aluminum
Material.If skin material is multilayer, preferably corrosion potential successively reduces multilayer skin material from inside to outside.Skin material thickness preferably accounts for entire aluminium
The 8~50% of layers of foil, more preferably 10 ± 2%.When the so-called inside of the utility model is referred to applied to soft-package battery, close to electricity
That side of core inner electrolyte；When so-called outside is referred to applied to soft-package battery, that side far from electrolyte inside battery core.
Wherein, core material is alternatively referred to as aluminium base.Plastic layer can be the plastic layer of various mature applications in the prior art, such as
Internal layer use cast polypropylene film (CPP), outer layer use nylon film (ON) or/and polyester film (PET), and plastic layer with
It can be compound using adhesive dry laminating in prior art or thermal method between aluminium foil layer.
The utility model aluminium alloy designations use association, Alcoa respective standard.
As a preferred embodiment, which uses composite layer aluminium foil, and core material is fine aluminium or ferro-aluminum in composite layer aluminium foil
Aluminium alloy, the outside skin material of composite layer aluminium foil are aluminium allumen.Content of the Zn-ef ficiency in the aluminium allumen be preferably
1%-10%, more preferably 2%-5%.As a kind of preferred scheme, which uses composite layer aluminium foil, composite layer
Core material is fine aluminium or ferro-aluminum aluminium alloy in aluminium foil, and the outside skin material of composite layer aluminium foil is aluminium zinc-iron aluminium alloy.Ferro element is in the aluminium
Content in zinc-iron aluminium alloy is preferably 0.8%~3.0%, and more preferably 1.0%~2.0%.Ferro element is closed in the ferro-aluminum aluminium
Content in gold is preferably 0.8%~3.0%, and more preferably 1.0%~2.0%.
Above-mentioned Zn-ef ficiency and iron content preferably refer to rolling state (state i.e. before annealing or before elements diffusion)
When content.If not specified, the constituent content in the utility model aluminium alloy be preferably defaulted as rolling state when
Content.
So-called ferro-aluminum aluminium alloy refers to the content of ferro element in the other elements in the aluminium alloy in addition to aluminium element most
(i.e. the content of aluminium element is most in the aluminium alloy, and iron content is more than second) greatly；Equally, so-called aluminium allumen refers to aluminium
Zn-ef ficiency is the aluminium alloy (content of aluminium element i.e. in the aluminium alloy of the maximum addition element of content in addition to aluminium element in alloy
At most, Zn-ef ficiency content is more than second).So-called aluminium zinc-iron aluminium alloy refers to that aluminium is used as basic constituent content most in the aluminium alloy
More, Zn-ef ficiency content more than second, iron content third is more.It can also be added other than above-mentioned element, in above-mentioned aluminium alloy few
The element silicon of amount, copper, rare earth element are to improve its deformation performance and corrosion resisting property.It is suitable by being added in aluminium allumen
The ferro element of amount, can be with refining alloy crystal grain, thus the deformability during improving deep-draw.In above-mentioned aluminium alloy, iron member
Element can refine crystal grain and promote deformation performance, and the adjustable corrosion potential of Zn-ef ficiency improves etch state.It is closed in the above ferro-aluminum aluminium
In gold, aluminium allumen and aluminium zinc-iron aluminium alloy, above-mentioned constituent content provided by the utility model is intended only as preferably or shows
Example；Under the utility model introduction and existing knowledge is combined, those skilled in the art pass through reasonable prediction or routine test
Suitable complete alloying element component proportion is obtained, the even slightly excellent technical side of other equivalent technical solutions can also be obtained
Case.
A kind of preferred embodiment as above-mentioned aluminum plastic film, which is characterized in that the aluminum plastic film uses composite layer aluminium foil, composite layer
Ingredient (when rolling state) mass percent proportion of core material in aluminium foil are as follows: Fe:0.8-1.8wt%, more preferably 1.0-
1.5wt%, Si:0.1-0.3wt%, Mn:0.1-0.5wt%, more preferably 0.2-0.3wt%, Cu :≤0.1wt%, Zn≤
0.2wt%, Zr:0.01-0.2wt%, remaining is Al；Ingredient (when rolling state) proportion of its outside skin material are as follows: Zn:2.0-
7.0wt%, more preferably 3.0-4.0wt%, Fe:0.8-1.6wt%, Si:0.1-0.3wt%, Mn:0.1-0.3wt%, Cu:
≤ 0.1wt%, Zr:0.01-0.2wt%, remaining is Al.It should be noted that " surplus is aluminium " or " remaining is Al " are simultaneously
It is not excluded in aluminium alloy that there are inevitable impurity.
Wherein, by adding Zn-ef ficiency appropriate in skin material, the corrosion potential of skin material can be reduced, so that skin material is preferential
Corrosion, and Zn-ef ficiency interlayer content distribution gradient is controlled to realize that etch state is banded corrosion；By adding in aluminium alloy
The corrosion resistance and intensity of aluminium alloy can be improved in manganese addition element；By adding ferro element in aluminium alloy, can refining aluminum alloy crystalline substance
Body partial size improves its ductility and deep drawability.
One of preferably, the composite layer aluminium foil of aluminum plastic film also may be selected by following core material and skin material complex
At the core material is the aluminium alloy containing following component (mass percent): Si≤0.25wt%；Cu≤0.05wt%；Mg≤
0.05wt%；Zn≤0.05wt%；Mn≤0.05wt%；Ti≤0.03wt%；V≤0.05wt%；Fe≤0.4wt%；Remaining
For aluminium；
Or；The core material is the aluminium alloy containing following component (mass percent): Si≤0.25wt%；Cu≤
0.05wt%；Mg≤0.05wt%；Zn≤0.05wt%；Mn≤0.05wt%；Ti≤0.03wt%；V≤0.05wt%；Fe
≤ 0.4wt%；Sm 0.1-0.3wt%；Remaining is aluminium；
The skin material is the aluminium allumen containing following component (mass percent): Zn 4-7wt%；Si 0.5-
1.0wt%；Ti 0.1-0.2wt%；Fe 0.5-1.5wt%；
Alternatively, the skin material is the aluminium allumen containing following component (mass percent): Zn 4-7wt%；Si
0.5-1.0wt%；Ti 0.1-0.2wt%；Fe 0.5-1.5wt%；Sm 0.1-0.3wt%.
Another preferred embodiment are as follows: the composite layer aluminium foil of aluminum plastic film also may be selected by following core material and skin material complex
At the core material is the aluminium alloy containing following component (mass percent): Si≤0.9wt%；Fe≤1.7wt%；Cu≤
0.1wt%；Mn≤0.2wt%；Mg≤0.05wt%；Zn≤0.1wt%；Ti≤0.08wt%；Cr≤0.05wt%；It is other
Impurity element is individually≤0.05%；Other impurity elements amount to≤0.15%；Remaining is aluminium；
The skin material is the aluminium allumen containing following component (mass percent): Zn 4-7wt%；Fe 0.5-
1.5wt%.
Aluminium foil described in the utility model refers to for the pure aluminum or aluminum alloy of film-form (or flake), therefore the utility model
Aluminium foil could also say that aluminium film, and thickness is chosen as the aluminium film within 200 microns, is also chosen as 200-300 microns or 300-500 is micro-
The thick aluminium film of rice.Alternatively, further, the thickness of aluminium foil layer is preferably 40-300 microns, more preferably 100-300 in aluminum plastic film
Micron, still more preferably from 100-200 microns.
Alternatively, the thickness of aluminium foil layer may be selected to be 80-100 microns perhaps 100-150 microns or 150- in aluminum plastic film
200 microns or 200-300 microns.
The condition of heat treatment of aluminium foil layer is preferably annealed condition (O state).
The outside of aluminium foil layer can pass through mould release bond plastic protective layer.Plastic protective layer in this way outside aluminium foil layer is convenient for
It is separated.
In above technical scheme, the aluminium foil layer of aluminum plastic film is composite layer aluminium foil, then it is aluminium that the core material of the aluminium foil layer, which can be 3,
Alloy or 1 line aluminium alloy or 8 line aluminium alloys；The skin material of its aluminium foil layer can be 7 line aluminium alloys.Wherein, core material is more excellent
1 line aluminium alloy or 8 line aluminium alloys are selected as, the composite layer aluminium foil with such core material has better corrosion resistance and deformability.
The aluminium foil layer corrosion stability of the utility model aluminum plastic film provided above is good, aluminium foil layer and the aluminium containing the aluminium foil layer
Plastic film has long-term resistance to cooling corrosion performance.
The above-mentioned aluminum plastic film of the utility model, is battery packages aluminum plastic film, and the aluminium foil layer has the function of water blocking layer.
Optionally, there can also be corrosion-proof layer on the inside of above-mentioned aluminium foil layer, which is chromium
Hydrochlorate processing is formed or is formed by rare earth oxide processing, but is not required in that.It is only moulded comprising inside in the utility model
The aluminum plastic film of the bed of material is immersed in conductive coolant liquid, and aluminium foil layer is electrically connected with conductive coolant liquid.In rare cases, work as battery
When electrolyte reaches aluminium foil layer across inside plastic layer, electrolyte and aluminium foil layer, conductive coolant liquid and external ground line formation
It is electrically connected, and then can trigger insulation resistance alarm, detect corrosion of the hydrofluoric acid to aluminium foil in time, and prevent electrolyte leakage etc.
Danger occurs.So if aluminum plastic film aluminium foil inside does not do traditional erosion shield processing in the utility model heat management system,
The security performance of battery and whole system remains to be protected.
The utility model provides also following aluminum plastic film, and the aluminum plastic film or its aluminium foil layer have following resistance to cooling corrosion
Can: corrosion-resistant test method is OY aqueous solution (Oyama Water Solution) corrosion test；The aluminum plastic film or its aluminium foil layer
The corrosion fatigue life in above-mentioned test be greater than 500 hours.Further, the corrosion-resistant longevity of the aluminum plastic film or its aluminium foil layer
Life is greater than 1000 hours.Further, the corrosion fatigue life of the aluminum plastic film or its aluminium foil layer is greater than 2000 hours.
The aluminum foil thickness of the above-mentioned aluminum plastic film for meeting OY aqueous solution corrosion resistance requirement is preferably big in the utility model
In 80 microns, further preferably greater than 100 microns, be still more preferably 120 microns -300 microns.
The aluminum foil material for meeting above-mentioned resistance to cooling corrosion performance requirement can be chosen from following material: the 1 of single layer is aluminium
Alloy (fine aluminium), 3 line aluminium alloys of single layer or the composite layer aluminium alloy with galvanic anode protection protective function.
The aluminum foil thickness for meeting above-mentioned resistance to cooling corrosion performance requirement can be chosen from following thickness: 80-120 microns,
Or 120-150 microns or 150-200 microns or 200-300 microns.
For example thickness is greater than 150 microns of fine aluminium AA1050, or with a thickness of AA1050 and 20 micron of 100 microns
The composite layer aluminium alloy (i.e. 120 microns of composite layer aluminium alloy overall thickness) that AA7072 is compounded to form selects both the above aluminium foil to use
Above-mentioned resistance to anti-icing fluid corrosion life requirement can be met in manufacture aluminum plastic film, so as to meet motor live time requirement.
Other than solving the problems, such as above-mentioned corrosion fatigue life from aluminium foil angle, aluminum plastic film can also be improved from outside plastic layer
Water-fast corrosion life problem.For example, the outside plastic layer is the plastic layer of hydrolysis.Further, which is
Teflon layer or PE layers or PE layers and PA layers of composite material or the water-fast improvement layer of PA.Alternatively, if outside is without modeling
The bed of material, i.e. aluminium foil are cladding material, then can make corrosion-inhibiting coating in aluminium foil layer outer surface, at chromaking processing or rare earth oxide
Reason.It is not the utility model preferred embodiment though these schemes can be used.
Alternatively, being described from vehicle application angle, preferably aluminum plastic film or the resistance to coolant liquid of its aluminium foil are (as mainly by ethylene glycol
With water composition anti-icing fluid) corrosion service life be greater than 5 years, preferably greater than 10 years, be more highly preferred to be greater than 15 years.
If the utility model is not specified, the so-called service life refers to that aluminum plastic film and its aluminium foil cannot go out in life span
The defect of existing corrosion failure.The utility model above-mentioned resistance to cooling corrosion performance in order to obtain, aluminium foil needs to select in aluminum plastic film
Above-mentioned suitable aluminum alloy materials and enough thickness.Such as preferably, which by aluminium foil layer and is compound on aluminium foil
Thermoplastic resin membrane is constituted, and wherein aluminium foil is with sacrificial anode function and service layer aluminium foil, and thickness is preferably 100 to 300 micro-
Rice.Existing aluminum plastic film product does not account for the application being soaked in anti-icing fluid, does not have long period of soaking in anti-icing fluid yet
Without the function of failure；And the aluminum plastic film product of the utility model has above-mentioned specific characteristic.
Further, the aluminum plastic film or its aluminium foil also have deep drawing quality or mouldability simultaneously.In other words, the aluminum plastic film or its
Aluminium foil also has good deep drawing quality or mouldability simultaneously.The aluminum plastic film also has good deep-draw mouldability simultaneously in other words.
Or the aluminum plastic film or its aluminium foil also have good Erichsen number simultaneously.Because its deep drawing quality can be measured with Erichsen number.For example,
With GB/T 4156-2007 " metal sheet and strip Erichsen test " standard testing, the aluminum plastic film or aluminum plastic film
In aluminium foil press depth value or Erichsen number be greater than 5 millimeters, preferably greater than 10 millimeters, more preferably higher than 12 millimeters.Wherein
So-called press depth value or Erichsen number refer to that aluminum plastic film or its aluminium foil cannot go out after the punching press within the value or after Erichsen test
Existing perforated phenomenon.
Further, the utility model also provides a kind of aluminum plastic film, and the aluminum plastic film includes aluminium foil layer and is compound in aluminium foil
The plastic layer of layer surface；Aluminium foil layer is composite layer aluminium foil, and aluminium foil layer includes core material and the skin material on the outside of core material, aluminium foil layer
Skin material corrosion potential be lower than core material corrosion potential；Wherein, the skin material on the outside of core material is by two layers of skin material or more than two
The multilayer skin material of layer is compounded to form, and corrosion potential successively reduces from inside to outside.Face corrosion gradient is consequently formed, being more advantageous to prevents
Pit corrosion.In other words preferably, on the cross section of the aluminium foil layer, the current potential in outside is gradually less than or equal to the current potential of inside
(or Zn content is stepped up from inside to outside).
In order to form electric potential gradient, high-temperature heating treatment can also be carried out to composite layer aluminium foil, allow in skin material Zn-ef ficiency to
Core material is gradually spread, thus aluminium foil layer from outside to inside during, variation (such as Figure 13 and figure of the content of Zn-ef ficiency continuously gradually
Shown in 14), corrosion potential is also continuously changed stepwise, and avoids Zn-ef ficiency content and corrosion potential cliff of displacement formula as shown in figure 12
Variation or mutation, so that being more advantageous to etch state is converted into uniform banded corrosion.Preferably, in annealed equal heat treatment
In the case where after diffusion, the difference of the maxima and minima of the corrosion potential in the cross section of entire composite layer aluminium foil is less than
250mV (millivolt), more preferably less than 200mV.Or preferably, in the cross section of entire composite layer aluminium foil any position corrosion
Electric potential gradient is less than 3 millivolts/micron, even more preferably less than 2 millivolts/micron.
The anticorrosion mechanism of composite layer aluminium foil is different from traditional corrosion-inhibiting coating processing modes such as aluminium foil surface chromaking, composite layer
Aluminium foil itself is all aluminium, improves etch state by adjusting the corrosion potential of aluminium foil inside different layers, i.e., is drawn by spot corrosion
It leads as banded corrosion, prevents aluminium foil from perforating and battery failure.It is immersed in cooling water after being handled according to aluminium foil outer surface chromaking,
Although the corrosion rate of aluminium foil can be reduced, the etch state of aluminium foil cannot be improved, it is little to the inhibiting effect of spot corrosion.
It is worth noting that the boundary between above-mentioned each layer of composite layer is after by annealing or High temperature diffusion processing
It is not very clear, ingredient and the not stepped mutation of current potential, the process of a gradual change between each layer.So this is practical
The novel composite layer aluminium foil, both including compound between the multilayer different aluminum alloys before non-high-temperature process；It also include high temperature
After processing, on the direction perpendicular to aluminium foil surface, the composite layer of constituent content gradual change or corrosion potential gradual change in aluminium foil.Than
Such as, high-temperature annealing process condition can choose are as follows: 260~400 degrees Celsius of annealing temperature, annealing time 1.5~3.5 hours；?
It can be by repeatedly annealing to reach perfect condition.
The utility model provides following soft-package battery heat control device, includes by any of the above-described kind of battery packaging material packet
The soft-package battery of dress, can also further comprise coolant liquid, and the outer packing of the soft-package battery is directly contacted with coolant liquid.Wherein,
The soft-package battery is preferably flat pattern, the flat pattern be preferably the value of length/thickness and width/thickness independently
Ground is at least 5, is more preferably at least 10, is more preferably at least 15, is more preferably at least 50, is more preferably at least
100.Further, coolant liquid included by the battery heat control device be water or mixed liquor comprising ethyl alcohol and water,
Or the mixed liquor comprising ethylene glycol and water or the mixed liquor comprising propylene glycol and water or other anti-freeze cooling liquids.These
Coolant liquid is on current automobile and industrial common coolant liquid, their not instead of insulated type cooling mediums, conductive
Conductive coolant liquid of the energy (including faint electric conductivity)；But it is cooling compared to the insulated type of silicone oil or transformer oil etc
Medium, above-mentioned conduction coolant liquid have many advantages, such as that thermal coefficient height, good fluidity, heat transfer efficiency are high and cost is relatively inexpensive.
On the basis of above, the utility model provides following soft-package battery heat control device, soft-package battery thermal control dress
Setting includes soft-package battery and coolant liquid, and the outer packing of the soft-package battery is directly contacted with coolant liquid, soft-package battery use with
One or more of the soft-package battery of the upper packaging material packaging.Wherein, coolant liquid is conductive coolant liquid.This is practical new
It includes the soft-package battery of lithium hexafluoro phosphate that type soft-package battery, which preferably uses electrolyte,.
Further, which further includes partition；At least partly surface of the partition and the soft-package battery
At least partly outer surface directly contacts, and fluid channel is equipped in partition；Several soft-package batteries form a battery unit,
Battery unit and baffle interval are arranged.Several described soft-package batteries can be 1 or 2 or one battery list of multiple compositions
Member.When the soft-package battery heat control device has water base coolant liquid, water base coolant liquid flows in the fluid passage, water base coolant liquid
With soft-package battery direct contact heat transfer.
In a kind of more preferred embodiment, the partition include two plates, two plates respectively with a battery unit
It contacts, the connecting plate being connected at least one plate is equipped between two plates, to form fluid between two plates
Channel.
In another more preferred embodiment, the partition is fin structure, it is preferable that is sequentially connected between fin, institute
Stating connection type can be the connection such as " V " shape, " u "-shaped, trapezoidal, arc, zigzag, and can be between adjacent fins parallel
Or shape is at an angle, to form the fluid channel between adjacent fins.Gap between adjacent cell is preferably
Less than 10 millimeters, further preferably less than 2 millimeters.
Wherein, it is highly preferred that the fin structure includes the plate of riser and riser both ends, the plate and battery are straight
Contact.
It is highly preferred that the fin structure includes plate described in two groups, described two groups respectively with two adjacent batteries
A battery unit in unit contacts, and includes multiple plates in each group.It is highly preferred that each plate only connects two risers.
The riser is not necessarily vertical with the plate, is also possible to inclination and is connected on plate.
In a kind of more preferred embodiment, hole is also provided on the fin.
In another more preferred embodiment, the fin can be straight panel fin, it is Wavelike finned in any one
It is or several, wherein described Wavelike finned to can be arc in knee, be also possible to form wedge angle that (such as acute angle, right angle are blunt
Angle), more preferably arc.
Wherein, the partition between two neighboring battery unit can be the son of the either multiple sub-dividing plate compositions of a partition
Partition group, for example, multiple sub-dividing plates are intervally arranged between two battery units；The sub-dividing plate structure is selected from aforementioned barriers knot
Any one or a few in structure.
The partition preferably uses metal material (such as aluminium alloy, stainless steel)；The corrosion potential of partition is equal to or is defeated by
Aluminium foil corrosion current potential in aluminum plastic film.Further, the partition uses metal material；The corrosion potential of partition is defeated by aluminum plastic film
The corrosion potential of aluminium foil corrosion current potential or partition is equal to or is defeated by the corrosion potential of the skin material of aluminium foil in aluminum plastic film.It is described every
Plate plays support soft-package battery and flow of tissue field action, partition can be extruding flat tube, is also possible to plain fin, stagger arrangement saw
The various forms of fins such as tooth fin.Above-mentioned fin is one kind of partition in the utility model, or perhaps has fluid channel
Finned partition.These fin partitions play the effect for separating adjacent battery unit and forming runner, and to battery unit
It is supported and fixes, in this way, the soft-package battery heat control device just has reliable antivibration fatigue resistance, so as to be used for vapour
In the vibration environments such as vehicle.Fin partition described in the utility model does not include the wing that cannot support aciculiform fin of battery unit etc
Piece.In addition the utility model fin diaphragm internal has fluid channel (or runner), and fluid channel directly connects with soft-package battery
Touching.Battery unit with fin partition closely be spaced setting form a whole, and can using bandage or through bolt should
It is integrally fastened together.The partition of other forms, the utility model fin partition are not only tied compared to flat tube or in the prior art
Structure is simpler, and due to not having partition wall surface so heat transfer efficiency is higher.Above-mentioned fin does not have high temperature resistant to act on or require, institute
It is not limited to that the plastic materials such as ABS, PP can also be used using metal material with fin partition.
Further, the aluminum plastic film is sealed around by the battery core, only battery electrode or electrode connecting end mouth from
It is stretched out in the aluminum plastic film；Battery heat control device further includes mainboard, and the mainboard is equipped with socket, and the battery is from aluminum plastic film
The part of interior stretching is inserted on mainboard by the socket.
Further, the battery heat control device further includes outer housing, and accommodating chamber, institute are equipped with inside the outer housing
It states battery unit and partition is placed in the accommodating chamber of the outer housing, the outer housing further includes that fluid inlet and fluid go out
Mouthful.
Alternatively, further, which further includes mainboard and outer housing, and mainboard and outer housing form seal chamber,
The electrode of soft-package battery stretches out on mainboard, and the ontology of soft-package battery is placed in seal chamber.In addition to the device of above-mentioned form, heat
Control device can also have multiple mainboards to form multiple seal chambers.
Further, the mainboard is located in the accommodating chamber of the outer housing, and the accommodating chamber is separated becomes
Two parts, first part accommodate cell body and partition, and second part accommodates the electrode stretched out from the aluminum plastic film
And/or electrode connecting end oral area point, physical isolation between the first part and second part.
Battery heat control device described in the utility model can also include cooling pump, coolant liquid heat exchanger and corresponding water
Pipe；Or the utility model provides a kind of battery cooling system, uses above-mentioned battery heat control device, further includes cooling pump
(preferably less than 24 volts of low-voltage water pump, further preferably 12 volts of electric water pumps), coolant liquid heat exchanger are (preferably micro-
The coolant liquid heat exchanger of channel form) and corresponding water pipe (water pipe internal diameter is preferably within 20 millimeters).Wherein, coolant liquid exchanges heat
Device is the gas-liquid heat exchanger that coolant liquid and surrounding air carry out direct heat exchange.
The utility model also provides the method using the cooling battery unit of any of the above-described kind of soft-package battery heat control device, should
Water base coolant liquid is accommodated in the fluid channel of heat control device.This method includes conducting thermal energy to institute from the battery unit
It states in aluminum plastic film.This method further includes that thermal energy is directly conducted to water base coolant liquid (and/or described fin) from the aluminum plastic film
In with the cooling battery unit.It can be found that the battery water-cooling pattern in compared with the prior art, battery in the utility model
It is considerably less that generated thermal energy from battery unit conducts the intermediate link to cooling water, and without the thermal contact resistance between solid,
So heat transfer efficiency is very high.
Due to using above-mentioned battery heat control device, the heat exchange efficiency of battery is very high, between battery body and coolant liquid
Heat transfer resistance is very low, heat transfer temperature difference is very small；So guaranteeing substance (such as electrolyte, diaphragm and solid in battery body
Electrolyte interface film SEI) not under the premise of overtemperature, can permit coolant liquid has higher temperature, that is, reduces cooling pair of battery
Extraneous requirement, reduces cooling cost, so as to use above-mentioned gas-liquid heat exchanger.Further, above-mentioned cooling system
It can also include electric heater, for being heated to battery.
In the more than the utility model aluminum plastic film of resistance to cooling corrosion and the thus soft-package battery of aluminum plastic film package, aluminium foil layer
Perhaps it is initially contacted with coolant liquid or after outside protective layer (such as nylon membrane) removing as water-touching layer as water-touching layer
It is contacted with coolant liquid.
The utility model provides another battery use packing material, by metal foil and the thermoplasticity on the inside of metal foil
Resin film is compounded to form；Or it is by thermoplastic resin membrane and middle metal foil and heat-resistant resin Film laminated shape
At metal foil is between thermoplastic resin membrane and heat-resistant resin film；Wherein, metal foil is the single layer with corrosion stability
Metal or metal foil are preferably the composite-layer metal foil for including core material and the skin material on the outside of core material, the skin of metal foil
The corrosion potential of material is lower than the corrosion potential of core material.The metal foil is preferably aluminium foil and/or copper foil and/or stainless steel foil.Gold
The thickness for belonging to foil is preferably that 20 to 50 microns or 50 to 80 microns or 80 to 150 microns or 150 to 200 microns or 200 are arrived
300 microns.Preferably, plastic foil is not contained on the outside of metal foil, i.e. the plastic foil inside that is only compound in metal foil.
Optionally, there can also be corrosion-proof layer on the inside of above-mentioned metal foil layer, which is
Chromic acid salt treatment is formed or is formed by rare earth oxide processing.
From another angle, the utility model also provides following soft-package battery solution, i.e., a kind of soft-package battery is adopted
With laminated aluminum film, which has following resistance to cooling corrosion performance:
Corrosion-resistant test method are as follows: OY aqueous corrosion test；
The ontology of the soft-package battery is soaked in coolant liquid, the corrosion fatigue life in above-mentioned test of the soft-package battery
Greater than 500 hours.
Further, the corrosion fatigue life of the soft-package battery ontology is greater than 1000 hours.Further, the Soft Roll
The corrosion fatigue life of battery body is greater than 2000 hours.
Alternatively, above-mentioned corrosion resistance test method is internal corrosion resistance test in ASTM D2570 standard, or use
5.14 sections " internal corrosive can be tested " method in similar QC/T 468-2010 standard assesses its outer packing aluminium foil.
Signified OY aqueous solution (Oyama Water Solution) corrosion test is heat exchanger aluminium in the utility model
The OY aqueous corrosion of Heat transmission industry universal is tested.
Plastic-aluminum film manufacturing method described in the utility model, comprising: pass through following resistance to aqueous corrosion test selection first
Corresponding aluminium foil: it is corrosion-resistant test use OY aqueous corrosion test method, the aluminium foil it is resistance under the corrosion tests
Corrosion life is greater than 500 hours；Then it carries out the aluminium foil and plastic film to be compounded to form aluminum plastic film again.
Wherein corrosion fatigue life is preferably greater than 1000 hours.More preferably higher than 2000 hours.The aluminium foil can be from upper
It states and is chosen in pure aluminum or aluminum alloy.
The utility model also provides any battery heat control device answering in electrical equipment or generating equipment as described above
With.
The utility model also provides a kind of electrical equipment, and the electrical equipment is equipped with any battery described in the utility model
Heat control device and electrical component are electrically connected between the electrode of the battery unit and the electrical component.
Wherein, the electrical equipment can be transporting equipment, electric appliance, lighting apparatus, electric tool, in electronic computer
Any one or a few, such as electric car, electric bicycle, battery-operated motor cycle, giant brain, electric locomotive, flight
Device, post and telecommunications etc..
The utility model also provides a kind of generating equipment, and the generating equipment includes generator and described in the utility model
Any battery heat control device, be electrically connected between the electrode and the generator of the battery heat control device.
Wherein, the generator can be wind-driven generator, solar generator, hydroelectric generator, nuclear energy generator, fire
Any one or a few in power generator, and the generator can be single generator and be also possible to multiple generating sets
At generating set.
The utility model also provides any battery heat control device answering on the vehicles or energy storage device as described above
With.Above-mentioned battery heat control device can be applied to the various vehicles such as new-energy automobile, aircraft, ship, and can answer
For the commercial energy storage device such as household energy storage device or solar energy, wind energy.
The utility model also provides a kind of vehicles, and (vehicles can be new-energy automobile, be also possible to aircraft
Or ship), which includes any of the above-described kind of soft-package battery or/and includes any of the above-described kind of soft-package battery thermal control
Device processed or/and the method for using above-mentioned cooling battery unit.Wherein preferably, soft-package battery, which uses, has any of the above-described kind
The laminated aluminum film of composite layer aluminium alloy.
Further, the busbar voltage of the power battery of the vehicles is higher than 100V (volt), more preferably above
200V。
Further, the vehicles have driving voltage be lower than 36V electric water pump, preferably less than 24V, more preferably
For the electric water pump of 12V.
Further, the positive electrode of the soft-package battery of the vehicles is LiFePO4 or LiMn2O4 or ternary material.
The utility model provides a kind of energy storage device, which includes any of the above-described kind of soft-package battery or/and packet
Containing any of the above-described kind of soft-package battery heat control device or/and using the method for above-mentioned cooling battery unit.
Further, the busbar voltage of the battery of above equipment or device is higher than 100V (volt), more preferably above
200V。
Further, the electric water pump that there is driving voltage to be lower than 36V for above equipment or device, preferably less than 24V, more
The preferably electric water pump of 12V.
Further, the positive electrode of the soft-package battery of above equipment or device is LiFePO4 or LiMn2O4 or ternary material
Material.
Any of the above-described battery heat control device is the direct immersion type battery heat control device of cooling water.Its heat exchange efficiency is very
It is high.
Traditional aluminum plastic film there is no the demand and characteristic of long-term hydrolysis, or in order to improve the resistance to sky of aluminum plastic film outer layer
Steam hydrolysis ability in gas is usually improved the hydrolysis ability of outer layer plastic film, for example is protected using fluorine-containing outer layer plastic
Film, but its cost, technique and thermal efficiency are poor.Preferred scheme in multiple technical solutions provided by the utility model
First is that, only inside is compounded with thermoplastic film to the aluminium foil of the aluminum plastic film of battery in heat control device, i.e., on the outside of aluminium foil not
Containing heat-resistant plastic film or protective film, aluminium foil directly with cooling water contact heat-exchanging.Aluminium foil in the utility model aluminum plastic film is not
Only have the effects that obstruct steam, and there is the corrosion resistant effect of long-term hydrolysis, also there is molding and packaging effect.Compared to
Existing aluminum plastic film, one of main utility model point of the utility model are the improvement of aluminium foil in aluminum plastic film and omit outside plastics
Layer, the aluminium foil improve its corrosion resistance and mechanical strength and hardness, Gu Sheng by using different structure and/or component
Having omited on the outside of the aluminum plastic film after the plastic foil of outside still has preferable resistant to chemical media corrosive power, anti-pin hole ability and resistance to
Scratch ability, and technique is easier and cost is lower, and when the aluminum plastic film and cooling water contact heat-exchanging, heat exchange efficiency is more
It is high；Importantly, the above-mentioned aluminum plastic film of the utility model also has the function of new, that is, having being capable of the long-term function of resistance to cooling water corrosion
Can, thus can with long period of soaking in cooling water without fail, to preferably meet immersion water-cooled soft-package battery cooling system
The thermal management requirements of system provide reliable guarantee for the performance boost of battery system.
The aluminum plastic film of the utility model is omitted after the nylon layer of outside, due to containing a large amount of alloying element in aluminium foil,
Contain a large amount of alloying element (such as Zn-ef ficiency) especially in skin material, plays the role of alloy strengthening, so that the utility model
The tensile strength of aluminium foil is greater than the tensile strength of 8 line aluminium alloys in traditional aluminum plastic film in aluminum plastic film, therefore even if without outside nylon
The protection of layer, still mechanical strength and corrosion stability with higher.Moreover, the intensity of skin material is greater than sandwich layer, aluminium foil recombination rate
Bigger, tensile strength is higher.
Another preferred scheme is in multiple technical solutions provided by the utility model, in aluminum plastic film aluminium foil by using
The internal matched composite layer aluminium foil of interlayer difference corrosion potential, so that aluminium foil corrosion form more tends to banded corrosion.Compared to list
Layer aluminium foil, above-mentioned composite layer aluminium foil preferably avoid aluminium foil spot corrosion perforation failure in aluminum plastic film.
In the technical solution of above-mentioned multiple composite layer aluminium foils in relation to aluminum plastic film, wherein more preferable scheme first is that using
The core material of fine aluminium or ferro-aluminum aluminium alloy as composite layer aluminium foil, using aluminium allumen as the skin material on the outside of composite layer aluminium foil.
Different from other composite layer aluminium foils, aluminum plastic film is used for the outer packing of soft-package battery in the utility model, needs to combine deformation
Performance and resistance to cooling water corrosion performance, so composite layer aluminium foil has not only played anti-cooling water spot corrosion effect in the aluminum plastic film, together
When also act good molding effect and packaging effect.
Aluminum plastic film provided by the utility model can also be the technical solution that the combination of above-mentioned technical characteristic is formed, compared to
Traditional aluminum plastic film, has the function of new, can be used to have with the packaging of the soft-package battery of cooling water direct long term contact
The advantages of resistance to cooling water corrosion, long service life.
The utility model also provides a kind of battery system insulation monitoring device.The insulation monitoring device has any of the above-described
Kind of battery heat control device, and there is insulation resistance monitoring device, wherein an electrode of insulation resistance monitoring device with it is above-mentioned soft
One tab of packet battery is electrically connected, and another electrode of insulation resistance monitoring device is electrically connected with ground terminal (or to be electrically connected with cooling water
Connect), monitor the insulation resistance.When the insulating resistance value drops below a certain threshold value, i.e., sends and alarm to vehicle control device
Signal；And corresponding safeguard measure can be taken (for example battery system bus power supply can be cut off immediately, and driver is reminded to escape as early as possible
Or maintenance), to prevent the pernicious failure consequence such as thermal runaway or on fire or explosion.Since cell aluminum-plastic membrane is immersed in cooling water
In, aluminium foil is electrically connected with cooling water or ground terminal in aluminum plastic film, when corrosion failure or electrolyte occurs in the aluminum plastic film of soft-package battery
In leakage or soft-package battery electrode and aluminum plastic film when aluminium foil short circuit, which will decline, to trigger alarm；
So the insulation monitoring device can effectively monitor whether aluminum plastic film fails, to ensure the safety of battery system.
The utility model also provides a kind of battery system insulated monitoring method.The method includes cold at any of the above-described kind
But on the basis of water logging bubble battery heat control device, by an electrode of insulation resistance monitoring device and the one of above-mentioned soft-package battery
Tab electrical connection, another electrode of insulation resistance monitoring device are electrically connected (or being electrically connected with cooling water) with ground terminal, and monitoring should
Insulation resistance；When the insulating resistance value drops below a certain threshold value, i.e., alarm signal is sent to vehicle control device, and can adopt
Corresponding safeguard measure (for example battery system bus power supply can be cut off immediately, and driver is reminded to escape or repair as early as possible) is taken, from
And prevent the pernicious failure consequences such as thermal runaway, on fire or explosion from occurring.Wherein, the triggering factors for causing insulating resistance value to decline
Have: there is corrosion failure or electrolyte leakage or soft-package battery electrode in the aluminum plastic film of soft-package battery and aluminium foil in aluminum plastic film is short
Road.
Detailed description of the invention
Fig. 1 is the first plastic-aluminum membrane structure diagram；
Fig. 2 is second of plastic-aluminum membrane structure diagram；
Fig. 3 is the application schematic diagram using the battery of the utility model aluminum plastic film；
Fig. 4 is soft-package battery schematic diagram；
Fig. 5 is soft-package battery heat control device schematic diagram；
Fig. 6 is the third plastic-aluminum membrane structure diagram, and wherein aluminium foil is single layer aluminium foil；
Fin partition shown in Fig. 7 is stagger arrangement saw tooth fin, including multiple tooth form units, is connected inside same row tooth form unit
It is logical to form fluid channel, arrangement is staggered front to back between adjacent tooth form unit, the top and bottom plane and battery of tooth form unit are straight
Contact.
Fin partition shown in Fig. 8 is plain fin, including the plate up and down that parallel riser is connected with riser both ends, is put down
It is directly contacted between plate and battery, forms fluid channel between riser.
Fig. 9 show new energy car battery cooling system schematic diagram.
The aluminum plastic film schematic diagram of Figure 10 the utility model another kind multilayered structure.
The battery system insulation monitoring device of aluminum plastic film failure of insulation is prevented shown in Figure 11 the utility model.
Figure 12 show composite layer aluminium foil it is compound after rolling state (unannealed) when, the content of Zn-ef ficiency on aluminum foil thickness direction
Distribution；Wherein abscissa is thickness direction, and ordinate is Zn-ef ficiency mass content；Zn-ef ficiency is contained by skin material to core material, quality
There is the decline of cliff of displacement formula in amount, shows that Zn-ef ficiency is not yet spread when rolling state.
Figure 13 show composite layer aluminium foil it is compound after and by 1.5 hours annealing after, Zn-ef ficiency on aluminum foil thickness direction
Content distribution；Wherein abscissa is thickness direction, and ordinate is Zn-ef ficiency mass content；Zn-ef ficiency is by skin material to core material, matter
Amount content continuously gradually reduces, and Zn-ef ficiency is gradually spread from skin material to core material after showing annealing.
Figure 14 show composite layer aluminium foil it is compound after and by 2 hours annealing after, Zn-ef ficiency contains on aluminum foil thickness direction
Amount distribution；Wherein abscissa is thickness direction, and ordinate is Zn-ef ficiency mass content；Zn-ef ficiency is by skin material to core material, quality
Content continuously gradually reduces, and Zn-ef ficiency is gradually spread from skin material to core material after showing annealing.
Specific embodiment
The utility model is described further below with reference to specific example, the protection scope of the utility model include but
It is without being limited thereto.
Embodiment one
If attached drawing 1 provides a kind of aluminum plastic film, the aluminum plastic film includes aluminium foil layer 1 and the modeling for being compound in aluminium foil layer both side surface
The bed of material 2,3, wherein aluminium foil layer 1 is compounded to form by 3 line aluminium alloy aluminium foil layers 7 (core material) and 7 line aluminium alloy aluminium foil layers 6 (skin material).
3003 aluminium alloys and 7072 aluminium alloy compounds are such as used, 7072 aluminium alloy layers 6 are compound in the outside of 3003 aluminium alloy layers 7.Or
It says, by hot sealing layer, 3003 aluminium foil layers, 7072 aluminium foil layers and nylon layer, successively lamination is formed the aluminum plastic film, wherein aluminium foil layer and modeling
The bed of material is with traditional adhesive bonding.In other words, the aluminum plastic film each layer from inside to outside are as follows: hot sealing layer, adhesive layer, 3003 aluminium foil cores
Layer, 7072 aluminium foil cortexes, adhesive layer, nylon protective layer.
The corrosion potential of 3003 aluminium alloys is about -0.72V, and the corrosion potential of 7072 aluminium alloys is about -0.88V.Due to
The corrosion potential of 7072 aluminium alloys is lower than the corrosion potential of 3003 aluminium alloys, when contacting with coolant liquid, 7072 aluminium alloy conducts
The anode being sacrificed, protects core material not to be corroded.Hot sealing layer thickness is preferably 80-100 microns, and nylon protective layer thickness is preferably
20-30 microns, the thickness of the clad aluminum layers of foil is preferably 200-300 microns；Wherein, the thickness of 7 line aluminium alloy layers 6 preferably accounts for
The 10% of entire aluminium foil layer 1.It is Nian Jie compound by adhesive 4,5 respectively between outer plastic layer 2,3 and aluminium foil layer 1 in same.
In addition, the condition of heat treatment of aluminium foil layer is preferably O state.Composite layer aluminium foil was moved back by 500 degrees Celsius, 2 hours
Fire processing, so that reaching reasonable elements diffusion between core material and skin material with the slow banded corrosion of interests (following embodiment is same).
The aluminium foil layer of the present embodiment is thicker than the aluminium foil layer in traditional aluminum plastic film, and it is rotten to not only improve long-term resistance to anti-icing fluid in this way
Corrosion energy, and be conducive to the water vapor barrier property of aluminum plastic film, to ensure the long-term reliability of soft-package battery packaging.
Embodiment two
The present embodiment introduction uses the battery of above-mentioned aluminum plastic film and the application mode of the battery.A kind of Soft Roll electricity is provided
Pond, which is wrapped up using the aluminum plastic film for the composite layer aluminium foil for including sacrificial anode function, such as answering in embodiment one
Layer Aluminum alloy foil is closed, i.e. aluminium foil uses and is compounded with 7072 aluminium alloy skin materials outside 3003 aluminium alloy core materials.Soft-package battery uses
After the laminated aluminum film of the above immersion corrosion of resistance to anti-freeze cooling liquid, which can be immersed in anti-freeze cooling liquid,
So as to directly carry out heat exchange with anti-freeze cooling liquid.As shown in figure 3, soft-package battery 11 is close by top margin 112 and mainboard 13
It is honored as a queen, the ontology of soft-package battery 11 is immersed in anti-freeze cooling liquid.The heat transfer effect of battery in this way is more preferable, and battery is each up and down
The more uniform temperature at place.
Embodiment three
The aluminum plastic film that the present embodiment is introduced is by thermoplastic resin membrane's (i.e. hot sealing layer, such as polypropylene) and composite layer aluminium
Alloy aluminium foil is compounded to form.The core layer 7 of aluminium foil layer uses the trade mark for 1050 fine aluminium, and Pi Cai 6 is by the basis of fine aluminium 1050
The aluminium alloy for adding 4%-7% Zn-ef ficiency forms (being simplified shown as AA1050+4-7%Zn), and the corrosion potential of skin material is defeated by core
Material, for skin material as anode loss protection core material, skin material recombination rate is preferably 20 ± 2%.The heat treatment of Al-alloy aluminium foil layer
State is annealed condition (O state), and thickness is preferably 100-300 microns, more preferably 100-200 microns.It is answered compared to traditional
Layer aluminium alloy is closed, the present embodiment is above-mentioned both to have had excellent resistance to cooling corrosion performance as the clad aluminum layers of foil of core material using fine aluminium,
There is good ductility and deep drawability again.So-called recombination rate refers to that skin material thickness accounts for entire composite layer (core material+skin material) thickness
The ratio of degree.
The aluminum plastic film or its aluminium foil require preferable ductility and deep drawability, such as with GB/T 4156-2007
The Erichsen number of " metal sheet and strip Erichsen test " standard testing, the aluminium foil of the aluminum plastic film is greater than 8 millimeters.
The aluminum plastic film or its aluminium foil require preferable resistance to cooling corrosion performance.Corrosion resistance test method uses
OY aqueous solution (Oyama Water Solution) corrosion test.OY aqueous corrosion test is as follows:
OY aqueous composition: chloride ion (Cl-): 195 ± 1 mg/litres, sulfate ion (SO4 2-): 60 ± 0.2 milligrams/
It rises, iron ion (Fe3+): 30 ± 0.1 mg/litres, copper ion (Cu2+): 1 ± 0.01 mg/litre.The pH of OY aqueous solution is about 3
(in the case where not specified, in OY test described in the utility model 3) aqueous solution pH value is each about.
OY aqueous temperature: it 88 DEG C, is stirred 8 hours, is then allowed to stand 16 hours with the speed of 0.6-0.9m/s (200rpm)；
Repeat above-mentioned circulation.
In the test of above-mentioned OY aqueous corrosion, ignore any perforation close to aluminium foil edge 5mm.When in aluminium foil remove edge
When corrosion failure occurs for any point except 5mm, the corrosion test time accumulated is that the aluminum plastic film aluminium foil is water-soluble in the OY
Corrosion fatigue life in liquid.
More than, the corrosion fatigue life of aluminum plastic film or its aluminium foil can also be soaked in the corrosion resistant in anti-icing fluid with it on real vehicle
Erosion service life is assessed, and the service life such as selected on real vehicle is greater than 10 years aluminum plastic films.
Example IV
As shown in Figure 4 and Figure 5, the battery heat control device of the present embodiment introduction is cold using can directly be soaked in for a long time above
But the soft-package battery in liquid (such as the coolant liquid being mainly made of ethylene glycol and water).The soft-package battery heat control device includes
The outer packing of soft-package battery 11 and water base coolant liquid, the soft-package battery 11 is directly contacted with coolant liquid, the soft-package battery 11
To be formed by the packaging material of any of the above-described kind of anti-cooling corrosion (aluminum plastic film of the cooling corrosion of such as water resistant base).The thermal control
Device further includes partition 12, which is preferably stagger arrangement saw tooth fin partition shown in Fig. 7 or plain fin as shown in Figure 8
Partition；At least partly surface of partition 12 is directly contacted with the soft-package battery 11 at least partly outer surface, and in partition 12
Equipped with fluid channel 121, fluid channel 121 is directly contacted with battery 11, while the cooling water in fluid channel 121 and battery 11
Direct contact heat transfer；One soft-package battery 11 forms a battery unit (can certainly be using two soft-package battery compositions one
A battery unit), battery unit and the interval of partition 12 are arranged.On the one hand partition plays a part of to support soft-package battery, on the other hand
Play tissue coolant liquid flow field.Clearance D between adjacent cell is preferably less than 10 millimeters.
The aluminum plastic film is sealed around by the battery core, and only battery electrode or electrode connecting end mouth are from the plastic-aluminum
It is stretched out in film；Battery heat control device further includes mainboard 13, and the mainboard 13 is equipped with socket, and the battery is stretched out of aluminum plastic film
Part (i.e. positive and negative electrode tab 111) out is inserted on mainboard 13 by the socket.Preferably, the part top margin of battery
112 are inserted on mainboard 13 also by the socket.
The battery heat control device further includes outer housing 14, and accommodating chamber, Duo Gesuo are equipped with inside the outer housing 14
In the accommodating chamber for stating the close whole insertion outer housing 14 that battery unit and partition 12 form, the outer housing 14 further includes stream
Body entrance and fluid outlet (not shown).
The mainboard 13 is located in the accommodating chamber of the outer housing 14, and the accommodating chamber is separated as two portions
Point, first part accommodates cell body and partition 12, second part accommodate the electrode stretched out from the aluminum plastic film and/or
Electrode connecting end oral area point, physical isolation between the first part and second part.
The battery heat control device further includes coolant liquid, and the coolant liquid is water or comprising ethylene glycol and water
Mixed liquor or mixed liquor or anti-freeze cooling liquid comprising propylene glycol and water.
Preferably, the partition 12 uses metal material；It is highly preferred that the corrosion potential of partition 12 is defeated by aluminium in aluminum plastic film
Foil corrosion potential, such as packaging material metal foil select AA1050 aluminium alloy, and partition 12 selects AA1050+5%Zn.Alternatively, every
The corrosion potential of plate 12 is defeated by the corrosion potential of the skin material of the aluminium foil of aluminum plastic film, for example packaging material metal foil selects composite material
AA1050/AA1050+3%Zn aluminium alloy, partition 12 select AA1050+5%Zn.Partition can also play anodic protection work in this way
With further preventing battery corrosion to fail.
Embodiment five
The core material of composite layer aluminium alloy and skin material can be selected from such as the following table 2 option 1 into option 4 any in aluminum plastic film:
Table 2
Core thickness is 120 microns, skin material is with a thickness of 40 microns, and the compound after annealing temperature of aluminium foil is 500 degrees Celsius, duration
2 hours.Using the method for embodiment three, the present embodiment aluminium foil corrosion fatigue life is greater than 1000 hours, even greater than 1500 or
2000 hours.
Embodiment six
The present embodiment provides a kind of aluminum plastic film, the aluminum plastic film includes aluminium foil layer and the plastics for being compound in aluminium foil layer surface
Layer；Aluminium foil layer is composite layer aluminium foil, and aluminium foil layer includes core material and the skin material on the outside of core material, the corrosion of the skin material of aluminium foil layer
Current potential is lower than the corrosion potential of core material；Wherein, multilayer skin material of the skin material on the outside of core material by two layers of skin material or more than two layers
It is compounded to form, corrosion potential successively reduces from inside to outside.
For example, aluminium foil layer is followed successively by core material, first layer skin material, second layer skin material from inside to outside in aluminum plastic film, core material is
AA1050 aluminium alloy, on the basis of first layer skin material is AA1050 plus the aluminium alloy of 2%Zn, second layer skin material are the basis AA1050
Upper plus 4%Zn aluminium alloy.So corrosion potential are as follows: core material > first layer skin material > second layer skin material.It in this way can be further
It ensures that corrosion is the banded corrosion successively corroded, to further avoid pit corrosion, ensures cell safety.
Embodiment seven
The present embodiment provides the test of the corrosion resistance of another soft-package battery outer packing aluminum plastic film aluminium foil namely Soft Roll electricity
The corrosion tests of resistance to anti-icing fluid in pond.The test method is used to assess and measure the resistance to anti-icing fluid corrosion life of product.
The ontology of several identical soft-package batteries is soaked in following mixed solution, the vertical court of the positive and negative tab of soft-package battery
On, mixed solution submergence height is to flush with soft-package battery top margin lower edge.
Mixed solution ingredient: being 40% anti-icing fluid and 60%ASTM solution composition by volume ratio.Wherein anti-icing fluid model
45% ethylene glycol antifreeze, solidification point are subzero 30 degrees Celsius；ASTM solution is by 1 liter of distilled water and 148 milligrams of sulfuric acid
Sodium, 165 milligrams of sodium chloride and 138 milligrams of sodium bicarbonate configurations.
Mixed solution temperature: 90 ± 2 degrees Celsius.Mixed solution flow direction is the level side parallel with battery body maximum surface
To the flow velocity for flowing through battery body surface is 0.5m/s.
Test is run 76 hours with above-mentioned temperature and flow velocity, and shutting down and standing 8 hours is a circulation, is carried out during shutdown molten
The inspection of liquid pH value and fluid infusion, solution inspection are divided into pH value and visual examination, the pH for not allowing to occur ± 1 or more during test
Value variation, solution appearance do not allow to become turbid and precipitate.
During test can battery outer packing aluminum plastic film aluminium foil check at any time corrosion depth.If the corrosion of all hot spots
Maximum value in depth value is greater than the 10% of aluminium foil original thickness value, then the maximum corrosion depth value is reached aluminium foil original thickness
Value 10% at the time of the test period that adds up be defined as the corrosion fatigue life of battery outer packing aluminum plastic film aluminium foil, it is also as soft
The resistance to anti-icing fluid corrosion life of packet battery.Therefore the so-called service life in the present embodiment test method, as reach above-mentioned corrosion depth
It is worth the test period added up.
In above-mentioned test, the utility model above description is subject in different places, can refer to Chinese automobile elsewhere
Professional standard QC/T 468-2010.It is worth noting that: the present embodiment soft-package battery outer packing aluminum plastic film preferably by aluminium foil and
The aluminum plastic film being compounded to form positioned at the thermoplastic resin membrane of aluminium foil inside, the outside of aluminium foil is without other plastic layers, therefore aluminium foil one
Start directly to contact with anti-icing fluid.But the utility model soft-package battery outer packing aluminum plastic film is also possible to (though not preferred) by aluminium
Foil and the heat-resistant resin Film laminated for being compound in the thermoplastic resin membrane of aluminium foil inside and being compound on the outside of aluminium foil are formed
Aluminum plastic film.It is removed since common heat-resistant resin film (such as PA or PET) is easy to be swollen by anti-icing fluid, therefore in order to unified
Testing standard first removes the heat-resistant resin film outside aluminum plastic film before carrying out above-mentioned corrosion fatigue life test, then again into
The above-mentioned corrosion test test of row.
For the ease of briefly stating, the present embodiment tries the corrosion resistance of above-mentioned soft-package battery outer packing aluminum plastic film aluminium foil
Test and be defined as "The resistance to anti-icing fluid corrosion life test of specific soft-package battery" or "The resistance to antifreeze corrosion of ZPC soft-package battery Life test”。
In order to meet requirement of the automobile to part durability, select those rotten in the resistance to anti-icing fluid of the specific soft-package battery
Lose the soft-package battery that the life value in life test is greater than 336 hours.Since power battery is very harsh to security requirement, therefore
Preferably greater than 500 hours soft-package batteries, more preferably greater than 1000 hours soft-package batteries；Further preferably greater than 2000 hours
Soft-package battery；The further soft-package battery to be preferably greater than 5000 hours.
It is following that another Assessment is provided, above-mentioned " the resistance to anti-icing fluid corrosion life of specific soft-package battery is tested "
In, test period is fixed as 14 days (i.e. 336 hours), checks pitting penetration everywhere, and wherein maximum pit depth requires to be less than aluminium
The 50% of foil original thickness value；Preferably less than 20%, more preferably less than 10%；Further preferably less than 8%；Again into
One step is preferably less than 5%.
If need to have above-mentioned corrosion resistance, aluminium foil is needed with suitable construction and/or suitable material group in aluminum plastic film
Point and/or suitable thickness.
The aluminum foil material for meeting above-mentioned resistance to cooling corrosion performance requirement can be chosen from following material: have sacrificial anode
The composite layer aluminium alloy of defencive function.
The aluminum foil thickness for meeting above-mentioned resistance to cooling corrosion performance requirement can be chosen from following thickness: 120-300 microns.
For example thickness is greater than 150 microns of fine aluminium AA1050, or with a thickness of AA1050 and 20 micron of 100 microns
The composite layer aluminium alloy (i.e. 120 microns of composite layer aluminium alloy overall thickness) that AA7072 is compounded to form selects both the above aluminium foil to use
Above-mentioned resistance to anti-icing fluid corrosion life requirement can be met in manufacture aluminum plastic film and soft-package battery, so as to meet motor live time requirement.
Embodiment eight
The present embodiment is using the aluminum plastic film of structure shown in attached drawing 2, and wherein aluminium foil is compounded to form by core material and outside skin material,
It is middle rolling state when core material be 100 microns -200 microns 8 line aluminium alloys (such as 8079 or 8021) formation, roll state when on the outside of skin material
Zn-ef ficiency by adding 1%-10% (preferably taking 3.5%) mass percent on the basis of 8 line aluminium alloys, which is formed, (to be described in table 3 below
Scheme 1 or scheme 2), recombination rate preferably takes 10%-50%.Aluminum plastic film containing this Al-alloy, corrosion resistance and depth
Punching property is all relatively good.It is tested according to three method of embodiment, preferably corrosion fatigue life is greater than 1000 hours aluminum plastic films.
Table 3
Embodiment nine
The present embodiment is using the aluminum plastic film of structure shown in attached drawing 2, and wherein aluminium foil is compounded to form by core material and outside skin material,
1 line aluminium alloy (such as 1050) formation that middle core material is 100 microns -200 microns, outside skin material on the basis of 1 line aluminium alloy by adding
The Zn-ef ficiency of 2%-6% mass percent forms (as described in Table 4), and recombination rate takes 20%-30%.
Embodiment ten
The present embodiment uses the aluminum plastic film of structure shown in attached drawing 2, wherein core material is 100 microns -300 microns when rolling state
1 line aluminium alloy (such as 1050) formation, roll state when on the outside of skin material by the basis of 1 line aluminium alloy add 2%-6% mass percent
Zn-ef ficiency formed (aluminium alloy as shown in table 4).Aluminum plastic film containing this Al-alloy, with good electrolyte resistance
Corrode function and good resistance to cooling water corrosion function；It is tested according to three method of embodiment, preferably corrosion fatigue life is greater than 1000
The aluminium foil of hour.
Table 4
Embodiment 11
The present embodiment is using the aluminum plastic film of structure shown in attached drawing 2, and wherein aluminium foil is compounded to form by core material and outside skin material,
Middle core material is that 120 microns of AA8021 aluminium alloy is formed, and outside skin material is that 40 microns of AA8021+3.5%Zn is formed.It is compound
Aluminium foil is suitably to diffuse to form echelon potential change by annealing (500 degrees Celsius, 2 hours) so as to Zn element.Contain
There is the aluminum plastic film of this Al-alloy, corrosion resistance and deep drawing quality are all relatively good, test according to three method of embodiment, corrosion resistant
The service life is lost up to 1200 hours or more, and scouring depth value is up to 5mm or more.
Embodiment 12
The present embodiment to 1050 aluminium alloy of single layer and composite layer aluminium alloy (core material is 1050 aluminium alloys, skin material be current potential compared with
Negative sacrificial layer) the progress corrosion resistance comparative test in OY experiment.
Anti-icing fluid system is selected to carry out OY experiment, experimental period is 4 weeks, carries out nitric acid dousing to material surface after experiment and goes
Except corrosion product, concrete condition is as follows: after anti-icing fluid system OY is tested 4 weeks, AA1050 single layer aluminium alloy has occurred more obvious
Spot corrosion, spot corrosion is more serious；Apparent spot corrosion does not occur for the aluminum alloy surface of compound sacrificial layer.It follows that by aluminium
The more negative skin material of alloy core material surface recombination corrosion potential, can effectively inhibit the generation of spot corrosion.
Embodiment 13
The present embodiment provides a kind of soft-package battery heat control devices comprising fin (such as saw of soft-package battery, metal material
Tooth fin) and water base coolant liquid.At least partly surface of the fin directly connects with the soft-package battery at least partly outer surface
Touching.Several soft-package batteries form a battery unit, and battery unit and fin interval are arranged, and the fin supports soft-package battery
Flow field and fluid channel is formed with tissue；Water base coolant liquid flows in the fluid passage, and water base coolant liquid and soft-package battery are direct
Contact heat-exchanging.The soft-package battery use laminated aluminum film, the aluminum plastic film by be located inside thermoplastic resin membrane and position
Aluminium foil layer in outside is compounded to form, and complex method can be that thermal method is compound can also be by adhesive dry laminating, the aluminium
Layers of foil and water base coolant liquid direct contact heat transfer.Wherein, the aluminium foil layer includes core material and the skin material on the outside of core material, aluminium
The core material of layers of foil is 1 line aluminium alloy (such as AA1050 or AA1060) or 8 line aluminium alloys (such as AA8021 or AA8079), aluminium foil
The skin material of aluminium allumen or aluminium foil layer that the skin material of layer is the 2%-5% containing zinc is by 1 line aluminium alloy or 3 line aluminium alloys or 8 systems
The Zn-ef ficiency that 2%-5% mass percent is added on the basis of aluminium alloy is formed or the skin material of aluminium foil layer is containing 2%-5% matter
Measure the aluminium alloy of the Zn-ef ficiency of percentage.Aluminium foil in above-mentioned aluminum plastic film not only has barrier steam effect, and has long-term resistance to
Corrosion resistant effect is hydrolyzed, and is also had good with higher mechanical strength and hardness without the protection of outside nylon layer
Good mouldability and packaging effect.
Embodiment 14
This implementation provides aluminum plastic film as shown in Fig. 2, and the aluminum plastic film is by the thermoplasticity on the inside of aluminium foil layer 1 and aluminium foil layer
Resin thin film layer 3 is compounded to form, wherein aluminium foil layer 1 is composite layer aluminium foil 1, and aluminium foil layer 1 includes core material 7 and is located at outside core material
The skin material 6 of side, the corrosion potential of the skin material of aluminium foil layer are lower than the corrosion potential of core material.Core material uses the conduct of ferro-aluminum aluminium alloy, outside
Side skin material uses aluminium allumen.On aluminium foil layer 1 only inside be compounded with thermoplastic resin film layer 3 (hot sealing layer 3 can also be claimed, than
Such as use PP), without external nylon protective layer.With the aluminum plastic film of outer layer plastic protective film in compared with the prior art, originally
Embodiment aluminum plastic film is courageously omitted after the plastic protective film for plastics of outside, equally has preferable mechanical strength and hardness, steam resistance
Every the characteristics such as property and electrolyte resistance, but also there is long-term resistance to extraneous hydrolysis function, and also simplify the compound of aluminum plastic film
Technique simultaneously saves production technology cost and the cost of raw material.
3 thickness of hot sealing layer is preferably 60-150 microns, and entire 1 thickness of clad aluminum layers of foil is preferably 60~150 microns.Its
In, Pi Cai 6 is compound in outside, as sacrificial anode；The thickness of skin material 6 preferably accounts for the 30% of entire aluminium foil layer 1.When as Soft Roll
Battery packages and when battery is immersed in cooling water, the skin material is as water-touching layer.Inside thermoplastic resin film layer 3 and aluminium foil layer
Between 1 can by adhesive phase (not shown) dry laminating or by thermal method it is compound.By aluminum plastic film system provided above
At soft-package battery can long period of soaking in coolant liquid, have long-term resistance to cooling corrosion function.
The composite layer aluminium foil of aluminum plastic film in the present embodiment, uses ferro-aluminum aluminium alloy as core material, using aluminium allumen
As outside skin material.Wherein: core material iron content is 0.9%~1.8%, preferably 1.2% when rolling state, silicone content 0.1%~
It 0.3%, is preferably 0.2%, manganese content is 0.1%~0.3%, preferably 0.2%；Skin material Zn content is 2.0% when rolling state
It~5.0%, is preferably 3.5%, silicone content 0.1%~0.3%, preferably 0.2%.Remaining ingredient of above-mentioned core material and skin material
It is to be made of Al and inevitable impurity.Ferro element to reduce crystal grain coarsening rate of core material during recovery and recrystallization,
The crystal grain refinement effect of increasing significantly can make the elongation percentage of aluminium foil relative to nonferrous aluminium alloy when same thickness
Improve about 20% (such as relative to 3 line aluminium alloys) even higher (such as relative to fine aluminium), the Erichsen number for the aluminum plastic film being made from it
Reach 6.6mm or more.
Method can be prepared by the following procedure in composite layer aluminum foil material comprising following steps:
(1) according to the proportion by each layer, melting is carried out respectively, and is cast into ingot casting respectively, and the ingot casting is subjected to cutting milling
Face, in 470-510 DEG C of Homogenization Treatments, hot rolling；
(2) by the product of step (1), core material, skin material are stacked, by ingot casting after 470-510 DEG C of Homogenization Treatments
Hot rolling under the conditions of 470-500 DEG C is subsequently cold-rolled to using thickness.
In order to enable the electric potential gradient distribution on composite layer Aluminum foils crosscut face is more reasonable, it can be further to composite layer aluminium foil
It is made annealing treatment to allow the Zn-ef ficiency in skin material moderately to spread to core material direction, the process conditions of such as annealing can choose are as follows:
250~400 degrees Celsius of annealing temperature, obtain the use state of clad aluminum foil within annealing time 1.5~3.5 hours；It may also pass through more
Secondary annealing is to reach perfect condition.
Embodiment 15
The present embodiment is further improved the ductility of skin material on the basis of embodiment 14, adds in above-mentioned skin material
0.9%~1.6% ferro element, preferably 1.0% are to get to aluminium zinc-iron aluminium alloy: skin material Zn content is 4.5%, ferro element
It is 1.0%, silicone content 0.2%.The elongation percentage of composite layer aluminium foil when same thickness can in this way further increased
About 5%, the Erichsen number for the aluminum plastic film being made from it reaches 7mm or more.
Embodiment 16
The present embodiment provides a kind of new-energy automobiles, use lithium-ion battery systems as dynamical system, it includes have
Battery cooling system as shown in Figure 9, the cooling system include battery heat control device A, cooling as shown in example IV
Liquid heat exchanger B, the electric water pump C and corresponding water pipe that driving voltage is 12V.Also, the Soft Roll in battery heat control device A
Battery is using the laminated aluminum film as described in embodiment eight or embodiment ten.
Embodiment 17
The present embodiment provides a kind of energy storage devices, and it includes just like battery cooling system shown in Fig. 9, the cooling system packet
Contain battery heat control device A, coolant liquid heat exchanger B as shown in example IV, the electric water pump C that driving voltage is 24 volts
With corresponding water pipe.Also, the soft-package battery in battery heat control device A is using the aluminium as described in embodiment eight or embodiment ten
Plastic film packaging.
Embodiment 18
As shown in Figure 10, the present embodiment provides a kind of aluminum plastic films of multilayered structure, it is characterised in that successively by inside plastics
The laminated body that hot sealing layer 11, intermediate aluminium foil layer 12, intermediate insulation resin layer 13 and outside aluminium foil layer 14 are compounded to form.Wherein,
Inside heat sealing layer plays heat-sealing, preferably polyolefin resin layer or acid-modified polyolefin resin layer.Intermediate aluminium foil (example
Such as select AA8079 aluminium foil) electrolyte or the outside osmosis of conductive ion for obstructing inside can be played.Intermediate insulation resin layer
Insulating effect can be played, so that the dielectric strength between electrolyte and outside aluminium foil meets electrical safety needs, the intermediate insulation
Resin layer can also be intermediate insulation film, and the resin that dielectric strength is high, fusing point is higher than inside heat sealing layer fusing point may be selected
Layer, for example, the stretching of optional polyester film, PA membrane, polypropylene screen etc. or unstretching film or higher melting-point polyolefin
Film.Outside aluminium foil can play resistance to cooling water corrosion effect, while can obstruct external moisture endosmosis, which is preferably
Any of the above-described kind of composite layer aluminium foil with sacrificial anode function, for example answered described in selection example 14 or embodiment 15
Close layer aluminium foil；The complex method of each layer of the aluminum plastic film may be selected use adhesive in the prior art and (it is viscous that this be not shown in Figure 10
Mixture layer) dry laminating, more preferably thermal method is compound.For the ease of deep-draw, can also aluminium foil on the outside outside again compound one
Layer protection resin film；For example, by using release adhesive compound one layer of PA film on the outside, the PA layers is removed again after deep-draw.
Multilayer aluminum plastic film in the present embodiment can preferably make electrical between the electrode of soft-package battery and outside aluminium foil
Dielectric strength is protected, and improves safety.
When being immersed in cooling water by the soft-package battery of the present embodiment laminated aluminum film, the outside of cooling water and the aluminum plastic film
Aluminium foil 14 conducts, but (such as larger than 2000 volts of enough electrical insulation strengths are still kept between cooling water and soft-package battery tab
It is special).
Embodiment 19
The present embodiment provides a kind of battery system insulation monitoring devices for preventing aluminum plastic film failure of insulation as shown in figure 11
And method.On the basis of any of the above-described kind of cooling water immersion type battery heat control device, by an electrode of insulation resistance instrument with
One tab of above-mentioned soft-package battery is electrically connected, and another electrode of insulation resistance instrument is electrically connected with ground terminal (or to be electrically connected with cooling water
Connect), monitor the insulation resistance.When corrosion failure or electrolyte leakage or soft-package battery electrode occurs in the aluminum plastic film of soft-package battery
With in aluminum plastic film when aluminium foil short circuit, which will decline, when lower than a certain threshold value (according to standard GB/T/T
18384.1-2001 regulation: for insulating resistance value divided by battery system nominal voltage, result should be greater than 100 Europe/volt, more preferably greater than
500 Europe/volt；So the resistive voltage is 100 Europe/volt, preferably 500 Europe/volt than threshold value；It for example is 350V for busbar voltage
Battery system for, the resistance threshold be 35 kilo-ohms, preferably 175 kilo-ohms) when, i.e., to vehicle control device send alarm signal
Number, and corresponding safeguard measure is taken (for example battery system bus power supply can be cut off immediately, and driver is reminded to escape or tie up as early as possible
Repair), to prevent the pernicious failure consequence such as electric shock or on fire or explosion.
Specific embodiment of the utility model is described in detail above, but it is merely an example, this is practical new
Type is not restricted to particular embodiments described above.To those skilled in the art, any pair of the utility model carries out
Equivalent modifications and substitution also all among the scope of the utility model.Therefore, in the spirit and model for not departing from the utility model
Lower made equal transformation and modification are enclosed, should all be covered in the scope of the utility model.
Claims (8)
1. a kind of new-energy automobile, it includes there is soft-package battery, the packaging material of the battery is aluminum plastic film, which is characterized in that institute
Stating aluminum plastic film includes aluminium foil layer and the plastic layer for being compound in aluminium foil layer inner surface, and inside plastic layer is thermoplastic resin membrane,
In, aluminium foil layer is composite layer aluminium foil, and core material is fine aluminium or ferro-aluminum aluminium alloy, the outside skin material of composite layer aluminium foil in composite layer aluminium foil
For aluminium allumen.
2. new-energy automobile as described in claim 1, wherein plastic layer is only compound in the inside of aluminium foil layer, aluminium in aluminum plastic film
The outside of layers of foil is not compounded with plastic layer, i.e., the described aluminum plastic film is by aluminium foil layer and positioned at the plastic layer complex of aluminium foil layer inner surface
At.
3. new-energy automobile as described in claim 1, wherein the outside skin material of composite layer aluminium foil is aluminium zinc-iron aluminium alloy.
4. new-energy automobile according to any one of claims 1 to 3, characterized in that include soft-package battery thermal control dress
It sets, the soft-package battery heat control device includes soft-package battery, partition and water base coolant liquid；It moulds the inside of battery packaging material
The bed of material is isolated by soft-package battery electrolyte with aluminium foil layer；At least partly surface of the partition and the soft-package battery are at least partly
Outer surface directly contacts, and fluid channel is equipped in partition；Several soft-package batteries form a battery unit, battery unit
It is arranged with baffle interval；Water base coolant liquid flows in partition fluid passage, and water base coolant liquid is directly contacted with soft-package battery
Heat exchange.
5. a kind of new-energy automobile, it includes the soft-package battery for having following laminated aluminum film, the aluminum plastic film has successively by interior
The laminated body that side heat sealing layer, intermediate aluminium foil layer, intermediate insulation resin layer and outside aluminium foil are compounded to form, wherein inside
Heat sealing layer is thermoplastic resin membrane.
6. new-energy automobile as claimed in claim 5, wherein outside aluminium foil is composite layer aluminium foil, core material in composite layer aluminium foil
For fine aluminium or ferro-aluminum aluminium alloy, the outside skin material of composite layer aluminium foil is aluminium allumen.
7. new-energy automobile according to claim 5, characterized in that outside aluminium foil is composite layer aluminium foil, composite layer aluminium foil
Middle core material is fine aluminium or ferro-aluminum aluminium alloy, and the outside skin material of composite layer aluminium foil is aluminium zinc-iron aluminium alloy.
8. new-energy automobile as described in claim 7, it is characterized in that the new-energy automobile has driving voltage lower than 24V's
Electric water pump.
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| CN201721118975.XU CN209461492U (en) | 2017-09-03 | 2017-09-03 | New-energy automobile |
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| CN201721118975.XU CN209461492U (en) | 2017-09-03 | 2017-09-03 | New-energy automobile |
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