CN107521183A - Packaging material manufacture method and soft-package battery - Google Patents
Packaging material manufacture method and soft-package battery Download PDFInfo
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- CN107521183A CN107521183A CN201710453517.XA CN201710453517A CN107521183A CN 107521183 A CN107521183 A CN 107521183A CN 201710453517 A CN201710453517 A CN 201710453517A CN 107521183 A CN107521183 A CN 107521183A
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- aluminium foil
- corrosion
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- layer
- foil layer
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/088—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyamides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/043—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of metal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/085—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
- B32B2457/10—Batteries
Landscapes
- Laminated Bodies (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The present invention relates to the aluminum plastic film for battery pack, is more particularly to packed for aluminum plastic film and soft-package battery applied to the soft-package battery in automotive antifreezing coolant.For be used in the prior art battery pack the resistance to automotive antifreezing coolant of aluminum plastic film or resistance to cooling water corrosion resistance deficiency the defects of, the present invention is special to provide following battery packages aluminum-plastic composite membrane solution：A kind of aluminum plastic film, the aluminum plastic film include aluminium foil layer and are compound in the plastic layer of aluminium foil layer surface；Wherein, aluminium foil layer is individual layer, and aluminium foil layer is formed by corrosion resistant aluminum alloy.Or the aluminum plastic film includes aluminium foil layer and is compound in the plastic layer of aluminium foil layer surface；Wherein, aluminium foil layer is individual layer, and aluminium foil layer is formed by corrosion resistant fine aluminium.Or the aluminum plastic film includes aluminium foil layer and is compound in the plastic layer of aluminium foil layer surface；Wherein, aluminium foil layer is composite bed, and aluminium foil layer includes core and the skin material on the outside of core, and the corrosion potential of the skin material of aluminium foil layer is less than the corrosion potential of core.
Description
Technical field
The present invention relates to battery use packing material and soft-package battery, more particularly to can be applied to be soaked in soft in cooling water
Bag battery use packing material and soft-package battery.
Background technology
The line aluminium alloy aluminium foil of aluminum plastic film generally use 8 that soft-package battery is packed in the prior art, after this aluminum foil annealing
For soft aluminium foil, scouring depth good moldability, but iron content is higher in the aluminium foil, and anti-anti-icing fluid corrosive power is poor, does not consider to be applied to
In the environment of directly being contacted with automotive antifreezing liquid.It is insufficient by the battery corrosion of the resistance to automotive antifreezing performance of this kind of laminated aluminum film,
If being immersed in for a long time in anti-icing fluid by the battery of this kind of laminated aluminum film, the risk of corrosion failure be present.If it need to meet to grow
Phase（Such as 5 years or 10 years）The requirement that good performance is remained in that in anti-icing fluid is soaked in, then needs to develop special resistance to automobile-used anti-
Freeze liquid aluminum plastic film and select suitable aluminium foil layer.Closed although being described in Chinese patent application CN102373499A using each system's aluminium
Gold is combined with plastics, but the non-membrane material of aluminium alloy therein and plastics or foil, is not suitable for the packaging of soft-package battery more.
The content of the invention
The resistance to automotive antifreezing coolant of aluminum plastic film for being used for battery pack in the prior art（Abbreviation anti-icing fluid, its is main
Composition is ethylene glycol and water）Or resistance to cooling water corrosion resistance deficiency the defects of, the present invention is special to be provided following battery packages and uses
Aluminum-plastic composite membrane（Hereinafter referred to as aluminum plastic film）Solution：A kind of aluminum plastic film, the aluminum plastic film include aluminium foil layer and are compound in aluminium
The plastic layer on layers of foil surface；Wherein, aluminium foil layer is individual layer, and aluminium foil layer is formed by corrosion resistant aluminum alloy.
Or the aluminum plastic film includes aluminium foil layer and is compound in the plastic layer of aluminium foil layer surface；Wherein, aluminium foil layer is single
Layer, aluminium foil layer are formed by corrosion resistant fine aluminium.
Or the aluminum plastic film includes aluminium foil layer and is compound in the plastic layer of aluminium foil layer surface；Wherein, aluminium foil layer is compound
Layer, aluminium foil layer include core and the skin material on the outside of core, and the corrosion potential of the skin material of aluminium foil layer is less than the corrosion of core
Current potential.
The aluminum plastic film of the present invention is the film composite material that a kind of plastic foil and aluminium foil film is formed, and is as polymer lithium electricity
Pond packaging material.
The one side of aluminium foil layer is compounded with plastic layer, or the two sides of aluminium foil layer is compounded with plastic layer.If plastic layer is compound
In the one side of aluminium foil layer, the inner side of aluminium foil layer is preferably compound in.Wherein, such scheme includes following situation：It is compound in aluminium foil
The plastic layer of a certain side surface of layer, both can be monolayer plastic or laminated plastics.
Further, the inner side plastic layer is preferably thermoplastic resin membrane.Such as polypropylene（PP）Film or poly- second
Alkene（PE）Film.Wherein, the thickness of inner side plastic layer is chosen as 50 ~ 300 microns, preferably 100 ~ 200 microns, more preferably
150 ~ 200 microns.So inner side plastic layer has more preferable electrical insulation characteristics, and so as to which withstand voltage value is higher, for example proof voltage is excellent
Choosing is more than 1000V, is more highly preferred to be more than 2000V.
Further, the outside plastic layer is preferably heat-resistant resin film.Such as polyamide or nylon（PA）Film or
Polyester（PET）Film or polyimides（PI）Film.
In addition, above-mentioned composite bed aluminium alloy, preferably at least including core and the skin material being compound on the outside of core.Composite bed
Aluminium alloy can be two layers of aluminium alloy, can also be multilayer aluminium alloy.
The above-mentioned aluminum plastic film of the present invention, can include A）-D）In any one structure：
A）The aluminum plastic film has the laminated body being made up of inner side heat sealing layer, middle aluminium foil layer, outside plastic protective layer, its
The aluminum that it is good that middle aluminium foil layer is corrosion stability is formed.It is that rustproof aluminum alloy and 5 systems prevent that the good aluminium of corrosion stability, which has 1 line aluminium alloy, 3,
Become rusty aluminium.
B）The aluminum plastic film has the laminated body being made up of inner side heat sealing layer, outside aluminium foil layer, wherein outside aluminium foil
Layer is formed for the good aluminum of corrosion stability.It is rustproof aluminum alloy that the good aluminium of corrosion stability, which has 3,.The aluminum plastic film does not contain outside plastics protection
Layer.
C）The aluminum plastic film has the lamination being made up of inner side heat sealing layer, middle aluminium foil layer, outside plastic protective layer
Body, formed wherein middle aluminium foil layer is the composite bed aluminium foil with galvanic anode protection protective function.For example the composite bed aluminium foil is by core
Material and corrosion potential are formed less than the skin material of core.
D）The aluminum plastic film has the laminated body being made up of inner side heat sealing layer, outside aluminium foil layer, wherein outside aluminium foil
Layer is formed for the composite bed aluminium foil with galvanic anode protection protective function.The aluminum plastic film does not contain outside plastic protective layer.
Wherein, the heat sealing layer of inner side can also claim thermoplastic resin film layer, and the plastic protective layer in outside can also claim resistance to
Thermal resin film layer.
Further, the corrosion potential of skin material is lower 50mV ~ 500mV than the corrosion potential of core.Preferably, the corrosion of skin material
Current potential is lower 70mV ~ 200mV than the corrosion potential of core.It is further preferable that the corrosion potential of skin material is lower than the corrosion potential of core
100mV~170mV.In the present invention, if not specified, corrosion potential is referred both to as the corrosion potential under coolant environment.It is logical
Cross skin material in this clad aluminum foil to match with the reasonable current potential of core, be advantageous to avoid aluminium foil（Particularly core）Spot corrosion.
Heretofore described coolant, in the case where not doing other special instructions, coolant is preferably water base cooling
Liquid.So-called water base coolant, refers to the coolant using water as basis.Water base coolant can also be include it is various anti-
Freeze agent（Such as ethanol, ethylene glycol, propane diols etc.）To form the anti-icing fluid with antifreeze function.So coolant of the invention
Include following species：Mixed liquor of pure water, ethylene glycol and water etc..
Or the aluminum plastic film includes aluminium foil layer and is compound in the plastic layer of aluminium foil layer surface；Wherein, outside aluminium foil layer also
Covered with metal zinc layers.
Further, the core of above-mentioned clad aluminum layers of foil is formed by corrosion resistant aluminum alloy or fine aluminium.The fine aluminium includes
Commercial-purity aluminium and rafifinal.The purity of aluminium is preferably greater than 99.0%, more preferably 99.0%~99.99% in the fine aluminium.
Corrosion resistant aluminum alloy of the present invention, refers in the environment of directly being contacted with coolant, aluminium alloy and aluminium
Plastic film can keep normal function for a long time without failing, such as the not cooled corrosion perforation of aluminium alloy.It is wherein described " not lose
The electric insulation functions that effect " includes aluminum plastic film do not fail and barriers function does not also fail.The although decay in the amount of having of its performance, but still
Basic demand can be met.Wherein so-called " long-term ", refers to product（Such as automobile or automobile power battery）Normal week in life-span
Phase duration, such as life-span are more than 5 years, preferably greater than 10 years, are more highly preferred to be more than 15 years.Corrosion resistant aluminium of the present invention closes
Gold, may be selected from following rustproof aluminum alloy has the aluminium alloy of good corrosion resistance in other words：1 line aluminium alloy, 3 line aluminium alloys, 5 are that aluminium closes
Gold, 6 line aluminium alloys.Due to corrosion resistant aluminum alloy（Such as alumal AA3003, AA omitted below）Or fine aluminium has very well
The corrosion of resistance to cooling function, therefore as the aluminium foil layer of aluminum plastic film, can apply to the application directly contacted with coolant
Occasion.
If aluminium foil layer is composite bed, it is compounded to form by core and skin material, core is located at inner side, and skin material is located at outside, and skin
The corrosion potential of material is less than（Or it is defeated by）The corrosion potential of core.When being contacted with the medium that is corrosive, it is rotten to form electrochemistry
Erosion, skin material protect the core as negative electrode, so that it is guaranteed that the aluminium foil layer in aluminum plastic film can be resistance to for a long time as the anode being sacrificed
Corrosion is cooled down, and then ensures the service life of battery.Skin material thickness preferably accounts for the 8 ~ 20% of whole aluminium foil layer, more preferably
10±2%.When the so-called inner side of the present invention refers to be applied to soft-package battery, close to that side of electrolyte inside battery core；So-called outside is
When finger is applied to soft-package battery, that side away from electrolyte inside battery core.
Wherein, core is alternatively referred to as base material.Plastic layer can be the plastic layer of various ripe applications in the prior art, such as interior
Layer uses cast polypropylene film（CPP）, outer layer uses nylon film（ON）Or Kapton（PI）, and plastic layer and aluminium
Adhesive bonding in existing process can be used compound between layers of foil.
Further, corrosion resistant aluminum alloy is selected from aluminium aluflex, and either magnalium aluminium alloy or magnalium sial close
Gold, or aluminium silico-aluminum alloy.Corrosion resistant aluminum alloy is more preferably aluminium aluflex, or magnalium aluminium alloy.
Or further, corrosion resistant aluminum alloy is selected from 3 line aluminium alloys, either 1 line aluminium alloy or 5 be aluminium close
Gold, either 6 line aluminium alloys or 8 line aluminium alloys, or 4 line aluminium alloys.These aluminium alloys have well against corrosion in other words
Property.Corrosion resistant aluminum alloy is more preferably 3 line aluminium alloys, either 1 line aluminium alloy or 5 line aluminium alloys, or 6 be that aluminium closes
Gold.
Aluminium alloy designations of the present invention use association of Alcoa respective standard.
Further, if aluminium foil layer is composite bed, the skin material of aluminium foil layer is selected from aluminium allumen, or aluminum bronze aluminium alloy.
The skin material of aluminium foil layer is more preferably aluminium allumen.Zn-ef ficiency content is preferably 1% ~ 10% in alumin(i)um zinc alloy, more preferably
4%~7%。
Or further, if aluminium foil layer is composite bed, the skin material of aluminium foil layer is selected from 7 line aluminium alloys, or 2 be that aluminium closes
Gold.I.e. skin material corrosion potential in 7 systems or 2 line aluminium alloys is less than the aluminium alloy of core corrosion potential, such as selects 7072 aluminium
Alloy or the aluminium alloys of Al clad 2024.The skin material of aluminium foil layer is more preferably 7 line aluminium alloys.Such as 3003 corrosion of aluminium alloy
Current potential is about -0.72V, and 7072 corrosion of aluminium alloy current potentials are about -0.88V, and 2024 corrosion of aluminium alloy current potentials are about -0.83V.Separately
Outside, in addition to 7072 basic model, 7072 other modifieds also can be selected in skin material.
Or further, if aluminium foil layer is composite bed, the skin material of aluminium foil layer is selected from the modified aluminium alloy of addition zinc.
Wherein, skin material be preferably add zinc 1 line aluminium alloy or add zinc 3 line aluminium alloys, such as addition mass percent be 1.0% ~
3003 aluminium alloy modifieds of 2.5% zinc.With the addition of 3003 current potentials of zinc reduces, and is about -0.82 ~ -0.88V, therefore less than 3003
The current potential of core.Or skin material is preferably in 1 line aluminium alloy（Fine aluminium）On the basis of add the aluminium alloy that zinc is formed, for example add
Mass percent is 1050 aluminium alloy modifieds of 4% ~ 7% zinc.
Further, the one side of aluminium foil layer is compounded with plastic layer, or the two sides of aluminium foil layer is compounded with plastic layer.If modeling
The bed of material is compound in the one side of aluminium foil layer, is preferably compound in the inner side of aluminium foil layer.Wherein, such scheme includes following situation：It is multiple
Both can be monolayer plastic or laminated plastics together in the plastic layer of a certain side surface of aluminium foil layer.
Further, corrosion resistant aluminum alloy is preferably 3003 aluminium alloys, or 3004 aluminium alloys, or 3005 aluminium alloys, or
3105 aluminium alloys, or 3A21 aluminium alloys.
Further, fine aluminium is 1050 aluminium alloys, either 1060 aluminium alloys or 1070 aluminium alloys, or 1100 aluminium close
Gold.
Further, if aluminium foil layer is composite bed, the skin material of aluminium foil layer is 7072 aluminium alloys or 7075 aluminium alloys.
Aluminium foil of the present invention refers to for film-form（Or flake）Pure aluminum or aluminum alloy, therefore aluminium foil of the present invention also may be used
To say being aluminium film, thickness is chosen as the aluminium film within 200 microns, is also chosen as 200 ~ 300 microns or 300 ~ 500 microns of thick aluminium
Film.Or further, the thickness of aluminium foil layer is preferably 50 ~ 500 microns in aluminum plastic film.The thickness is more preferably 100 ~ 300
Micron.The thickness is more preferably 200 ~ 300 microns again.
Or further, the thickness of aluminium foil layer is 30 ~ 50 microns in aluminum plastic film, either 50 ~ 80 microns or 80 ~
100 microns, either 100 ~ 150 microns or 150 ~ 200 microns, either 200 ~ 300 microns or 300 ~ 500 microns.
Further, the outside of aluminium foil layer is covered with metal zinc layers.The zinc layers are preferably formed using spray zinc technology.
Or further, aluminium foil layer is composite bed, aluminium foil layer includes core and skin material, and core is aluminium alloy, Pi Cai
For metal zinc layers.
Further, the outside of aluminium foil layer passes through mould release bond plastic protective layer.Plastics so outside aluminium foil layer are protected
Sheath is easy to be separated.
Further, the heat-sealing layer material can be polypropylene（PP）Film, can also be polyethylene（PE）Film.
Further, the material of the plastic protective layer can be nylon（ON）Film or polyester（PET）It is thin
Film.
In above technical scheme, following technical scheme is included：If the aluminium foil layer of aluminum plastic film is individual layer（Non-composite layer）, then should
Aluminium foil layer can be 3 line aluminium alloys, either 1 line aluminium alloy or 5 line aluminium alloys, or 6 line aluminium alloys.If the aluminium of aluminum plastic film
Layers of foil is composite bed, then the core of the aluminium foil layer can be 3 line aluminium alloys, either 1 line aluminium alloy or 5 line aluminium alloys, or
6 line aluminium alloys, or 8 line aluminium alloys；The skin material of its aluminium foil layer can be 7 line aluminium alloys, or 2 line aluminium alloys.
The aluminium foil layer corrosion stability of present invention aluminum plastic film provided above is good, aluminium foil layer and the aluminum plastic film containing the aluminium foil layer
With long-term resistance to cooling corrosion performance.
Present invention aluminum plastic film provided above, such as aluminium foil layer employ 3 line aluminium alloys（Such as 3003）, more preferably adopt
With the compound aluminium alloy compound layer of 3 line aluminium alloys and 7 line aluminium alloys（Such as 3003/7072）, therefore it has excellent resistance to cooling
It corrosion performance, can be applied in automobile-used Soft Roll electrokinetic cell system, and the aluminum plastic film of soft-package battery and coolant can be allowed direct
Contact heat-exchanging.
From another angle, battery packages aluminum plastic film of the invention can also use following statement, i.e.,
A kind of battery packages aluminum plastic film, it includes the aluminium foil as water blocking layer, and the aluminium foil has the following corrosion of resistance to cooling
Performance：
Corrosion-resistant method of testing is the OY aqueous solution（Oyama Water Solution）Corrosion experiment；
The corrosion fatigue life under above-mentioned environment of the aluminium foil is more than 500 hours.
Further, the corrosion fatigue life of the aluminium foil is more than 1000 hours.Further, the aluminium foil is corrosion-resistant
Life-span is more than 2000 hours.
Or a kind of battery packages aluminum plastic film, it includes the aluminium foil and the heat that is compound on aluminium foil as water blocking layer
Plastic resin film, the aluminium foil have following resistance to cooling corrosion performance：
Corrosion-resistant method of testing is：Internal decay resistance experiment in the experiment of OY aqueous corrosions or ASTM D2570 standards；
The corrosion fatigue life under above-mentioned environment of the aluminium foil is more than 500 hours.
Further, the corrosion fatigue life of the aluminium foil is more than 1000 hours.Further, the aluminium foil is corrosion-resistant
Life-span is more than 2000 hours.
Or it is described from vehicle application angle, preferably aluminum plastic film or the resistance to coolant of its aluminium foil（As mainly by ethylene glycol
With the anti-icing fluid of water composition）The life-span of corrosion is preferably greater than 10 years more than 5 years, is more highly preferred to be more than 15 years.
In the wherein so-called life-span, refer to that the defects of corrosion failure can not occur in life span in aluminum plastic film and its aluminium foil.This
Invention is in order to obtain above-mentioned resistance to cooling corrosion performance, and aluminium foil is needed from above-mentioned suitable aluminum alloy materials and foot in aluminum plastic film
Enough thickness.For example preferably, the aluminum plastic film is made up of aluminium foil layer and the thermoplastic resin membrane being compound on aluminium foil, wherein aluminium
Paper tinsel is that thickness is preferably 100 to 300 microns with sacrificial anode function and service layer aluminium foil.Existing aluminum plastic film product is not examined
Consider the application being soaked in anti-icing fluid, also do not possess long period of soaking in anti-icing fluid without the function of failure；And the present invention
Aluminum plastic film product possesses 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 weighed with Erichsen number.Such as
With GB/T 4156-2007《Metal sheet and strip Erichsen test》Standard testing, the aluminum plastic film or plastic-aluminum
The press depth value or Erichsen number of aluminium foil in film are more than 5 millimeters, preferably greater than 10 millimeters, more preferably higher than 12 millimeters.Its
In so-called press depth value or Erichsen number, refer to aluminum plastic film or its aluminium foil after the punching press within the value or can not after Erichsen test
There is perforated phenomenon.
If aluminium foil is individual layer aluminium alloy, further, the aluminium foil is 1 line aluminium alloy, or 3 line aluminium alloys or system of 5 systems
Aluminium alloy；Wherein it is more preferably 1 line aluminium alloy.
If aluminium foil is composite bed aluminium alloy, further, the aluminium foil is the composite bed aluminium foil with sacrificial anode function.
Further, the composite bed Aluminium Foil Package contains core and skin material, and skin material is located on the outside of core, and the corrosion electricity of skin material
Position is less than the corrosion potential of core.
Further, core is selected from 1 line aluminium alloy, or 3 line aluminium alloys or 5 line aluminium alloys；Wherein it is more preferably
1 line aluminium alloy.
Further, skin material is selected from 7 line aluminium alloys, or the modified aluminium alloy of addition zinc.
Further, core is selected from following aluminium alloy：1050th, 1060,1070,1100 and above aluminium alloy improvement
Type.
Further, skin material is selected from following aluminium alloy：7072nd, 1 line aluminium alloy modified of zincification, the 3 of zincification are that aluminium closes
8 line aluminium alloy modifieds of golden modified, zincification.
The packaging material of battery, in addition to it can use the composite membrane of aluminium foil and plastics, can also use copper foil and
Composite membrane of the composite membrane of plastics, stainless steel and plastics etc..Therefore the present invention is also described below the A-D solutions of metallo-plastic composite membrane
Certainly scheme.
A, a kind of battery use packing material, it is compounded to form by thermoplastic resin membrane and metal foil；Wherein, metal level bag
Skin material containing core and on the outside of core, the corrosion potential of the skin material of metal level are less than the corrosion potential of core.
B, a kind of battery use packing material, it is by thermoplastic resin membrane and metal foil and heat-resistant resin Film laminated
Formed, metal foil is between thermoplastic resin membrane and heat-resistant resin film；Wherein, metal level includes core and is located at
Skin material on the outside of core, the corrosion potential of the skin material of metal level are less than the corrosion potential of core.
C, a kind of battery use packing material, it is compounded to form by thermoplastic resin membrane and metal foil；Wherein, metal level is
The good metal of corrosion stability.
D, a kind of battery use packing material, it is by thermoplastic resin membrane and metal foil and heat-resistant resin Film laminated
Formed, metal foil is between thermoplastic resin membrane and heat-resistant resin film；Wherein, metal level is the good gold of corrosion stability
Category.
Wherein, the material of the metal foil is the one or more in aluminium or copper or stainless steel, magnesium, zinc.Wherein,
The aluminium in the above-mentioned metal foil of the present invention includes fine aluminium and aluminium alloy；The copper-clad includes pure copper and copper alloy.
The present invention also provides a kind of aluminum plastic film, and the aluminum plastic film includes aluminium foil layer and is compound in the plastics of aluminium foil layer surface
Layer；Aluminium foil layer is composite bed aluminium foil, and aluminium foil layer includes core and the skin material on the outside of core, the corrosion of the skin material of aluminium foil layer
Current potential is less than the corrosion potential of core；Wherein, multilayer skin material of the skin material on the outside of core by two layers of skin material or more than two layers
It is compounded to form, corrosion potential reduces successively from inside to outside.Face corrosion gradient is consequently formed, is more beneficial for preventing pit corrosion.
In order to form electric potential gradient, composite bed aluminium foil can also be allowed to be heated at high temperature, allow in skin material Zn-ef ficiency to core
Progressively spread, so as to aluminium foil layer from outside to inside during, the continuous change progressively of the content of Zn-ef ficiency, corrosion potential is also continuous
It is changed stepwise, avoids Zn-ef ficiency content and the change of corrosion potential cliff of displacement formula or mutation, so as to is more beneficial for etch state conversion
For uniform banded corrosion.
What deserves to be explained is the boundary between above-mentioned each layer of composite bed has not been very clearly, composition and electricity between each layer
Position is not stepped mutation, but the process of a gradual change.So composite bed aluminium foil of the present invention, both includes non-high temperature
It is compound between the multilayer different aluminum alloys of before processing；Also after including high-temperature process, on the direction perpendicular to aluminium foil surface, aluminium
The composite bed of constituent content gradual change or corrosion potential gradual change in paper tinsel.
The present invention provides a kind of plastic-aluminum film manufacturing method：
Corresponding aluminium foil is selected by following resistance to aqueous corrosion experiment first：Corrosion-resistant test is tested using OY aqueous corrosions
Method, the corrosion fatigue life under the corrosion tests of the aluminium foil are more than 500 hours；
Then the aluminium foil and plastic sheeting are combined again.
Wherein corrosion fatigue life is preferably greater than 1000 hours.More preferably higher than 2000 hours.The aluminium foil can be from upper
State and chosen in pure aluminum or aluminum alloy.
The present invention provides another aluminum plastic film, and the aluminum plastic film includes aluminium foil layer and is compound in the plastics of aluminium foil layer surface
Layer；Wherein aluminium foil layer is composite bed aluminium foil, and aluminium foil layer includes core and the skin material on the inside of core, and the skin material of aluminium foil layer exists
The corrosion potential under electrolyte environment in battery core is less than the corrosion potential of core.The skin material of inner side, be advantageous to prevent inner side electricity
Solve corrosion of the liquid to aluminium foil layer.
In addition, the present invention provides a kind of soft-package battery, include electrode material and electrolyte and the aluminium of outer wrap
Plastic film, wherein, the aluminum plastic film uses any aluminum plastic film described above.The aluminum plastic film has resistance to cooling corrosion performance.
In other words, the present invention provides a kind of soft-package battery, includes the aluminum plastic film of battery core and battery core outer wrap, its
In, the aluminum plastic film uses any aluminum plastic film described above.The battery core includes positive and negative electrode material and electrolyte etc.；But institute
Battery core is stated not comprising outer packing materials such as outside aluminum plastic films.
Preferably, the soft-package battery is using the aluminum plastic film parcel for including rustproof aluminum alloy aluminium foil layer.
It is further preferable that the rustproof aluminum alloy is 3003 or 3103 or 3005.
It is further preferable that the soft-package battery is using the aluminum plastic film parcel for including rustproof aluminum alloy aluminium foil layer, the aluminium foil layer
Thickness be 100 ~ 200 microns, either 200 ~ 300 microns or 300 ~ 500 microns.
Preferably, the soft-package battery is using the aluminum plastic film parcel for including clad aluminum layers of foil, and clad aluminum layers of foil includes
There are core and skin material, skin material is located on the outside of core and corrosion potential is less than core.Wherein it is further preferable that skin material corrosion potential ratio
Low 50 ~ the 300mV of core corrosion potential；More preferably low 130 ~ 200mV.
It is further preferable that the core is 3003 aluminium alloys or 3103 aluminium alloys, the skin material be 7072 aluminium alloys or
Person adds the 3003 aluminium alloy modifieds that mass percent is 1.0 ~ 2.5% zinc.
It is further preferable that the thickness of the composite bed aluminium alloy is 100 ~ 200 microns or 200 ~ 300 microns.Skin material is answered
Conjunction rate is preferably 5 ~ 15%, and skin material recombination rate is more preferably 8 ~ 12%.So-called skin material recombination rate refers to that the thickness of skin material accounts for entirely
Metal composite layer（Core+skin material）The ratio of thickness.
For example it is compound 7072 aluminium foil of 3003 aluminium foils to wrap up aluminium foil in the aluminum plastic film of the soft-package battery, 3003 aluminium foil thickness
Spend for 200 ~ 300 microns, 7072 aluminium foil layer thickness are 20 ~ 30 microns.
Preferably, soft-package battery is using the aluminum plastic film bag for including the above-mentioned composite bed aluminium foil with sacrificial anode function
Wrap up in.
From another angle, the present invention also provides following soft-package battery solution, i.e., a kind of soft-package battery, it uses aluminium
Plastic film is packed, and the soft-package battery body has following resistance to cooling corrosion performance：
Corrosion-resistant method of testing is：OY aqueous corrosions are tested；
The body of the soft-package battery is soaked in coolant, the corrosion fatigue life under above-mentioned environment of the soft-package battery is more than
500 hours.
Further, the corrosion fatigue life of the soft-package battery body is more than 1000 hours.Further, the Soft Roll
The corrosion fatigue life of battery body is more than 2000 hours.
Or above-mentioned corrosion resistance test method is internal decay resistance experiment in ASTM D2570 standards, or use
5.14 section " experiment of internal corrosion performance " methods in similar QC/T 468-2010 standards are assessed its outer packing aluminium foil.
The signified OY aqueous solution in the present invention（Oyama Water Solution）Corrosion experiment passes for heat exchanger aluminothermy
The OY aqueous corrosions experiment of defeated industry universal.
So as to which the soft-package battery body can be long-term（Such as 5 years or more than 10 years）It is immersed in coolant（Such as contain ethylene glycol
Anti-icing fluid）In without produce outer packing corrosion failure.Or be described from vehicle application angle, preferably soft-package battery is resistance to
Coolant（Such as the anti-icing fluid being mainly made up of ethylene glycol and water）The life-span of corrosion be more than 5 years, it is preferably greater than 10 years, more excellent
Choosing is more than 15 years.
In the wherein so-called life-span, refer to that the defects of corrosion failure can not occur in life span in soft-package battery body.This hair
It is bright in order to obtain above-mentioned resistance to cooling corrosion performance, aluminium foil is needed from above-mentioned suitable aluminum alloy materials and suitable in aluminum plastic film
Thickness.For example preferably, the aluminum plastic film is made up of aluminium foil layer and the thermoplastic resin membrane being compound on aluminium foil, wherein aluminium foil
Formed by the good aluminium alloy of above-mentioned anti-anti-icing fluid corrosivity, thickness is preferably 100 to 300 microns.Existing soft-package battery product
The application being soaked in anti-icing fluid is not accounted for, does not possess long period of soaking in anti-icing fluid without the function of failure yet；And this
The soft-package battery product of invention possesses above-mentioned specific characteristic.Soft-package battery structure can be divided into soft-package battery body and just in the present invention
Negative electrode lug, so, the soft-package battery body refers to the soft-package battery part in addition to positive and negative electrode lug.
On the basis of more than, the present invention also provides following soft-package battery heat control device, the soft-package battery heat control device
Include one or more of soft-package batteries in above-described soft-package battery.The soft-package battery uses resistance to coolant immersion above
After the laminated aluminum film of corrosion, the soft-package battery can be immersed in coolant（Such as anti-freeze cooling liquid）In, so as to straight
Connect and carry out heat exchange with coolant.The heat transfer effect of so battery is more preferable, and the more uniform temperature of battery up and down everywhere.
Soft-package battery heat control device as described above, in addition to coolant, the outer packing and cooling of the soft-package battery
Liquid directly contacts.Further, the coolant included by described battery heat control device is water or comprising ethanol and water
Mixed liquor or mixed liquor comprising ethylene glycol and water or include propane diols and the mixed liquor of water or other antifreeze coolings
Liquid.These coolants are on current automobile and industrially conventional coolant, and they are not insulated type cooling mediums, but are had
Electric conductivity（Including faint electric conductivity）Conductive coolant；But compared to the insulation of silicone oil or transformer oil etc
Type cooling medium, above-mentioned conductive coolant have thermal conductivity factor height, good fluidity, heat transfer efficiency are high and cost is relatively inexpensive etc.
Advantage.
On the basis of more than, the present invention provides following soft-package battery heat control device, the soft-package battery heat control device bag
Contain soft-package battery and coolant, it is characterised in that the outer packing of the soft-package battery directly contacts with coolant, soft-package battery
Using the one or more in above-described soft-package battery.
Further, the heat control device also includes mainboard and shell body, and mainboard and shell body form annular seal space, Soft Roll electricity
The electrode in pond is stretched out on mainboard, and the body of soft-package battery is placed in annular seal space.
Further, the heat control device also includes dividing plate；At least part surface of the dividing plate and the soft-package battery
At least part outer surface directly contacts, and is provided with fluid passage in dividing plate；Several soft-package batteries form a battery unit,
Battery unit is set with baffle interval.Several described soft-package batteries can be 1 or 2 or one battery list of multiple compositions
Member.Wherein, battery use packing material is preferably aluminum plastic film.Further, the dividing plate uses metal material；The corrosion electricity of dividing plate
Aluminium foil corrosion current potential in aluminum plastic film is defeated by position, or dividing plate corrosion potential be defeated by aluminium foil in aluminum plastic film skin material corrosion electricity
Position.The dividing plate plays support soft-package battery and flow of tissue field action, and dividing plate can be extruding flat tube or straight wing
The various fin configurations such as piece, stagger arrangement saw tooth fin.
Further, the aluminum plastic film is sealed around by the battery core body, only battery electrode or electrode connecting end mouth from
Stretched out in the aluminum plastic film；Battery heat control device also includes mainboard, and the mainboard is provided 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 also includes shell body, and accommodating chamber, institute are provided with inside the shell body
State battery unit to be placed in the accommodating chamber of the shell body with dividing plate, the shell body also includes fluid intake and fluid goes out
Mouthful.
Further, the mainboard is located in the accommodating chamber of the shell body, and the accommodating chamber is separated turned into
Two parts, Part I accommodate cell body and dividing plate, and Part II accommodates the electrode stretched out from the aluminum plastic film
And/or electrode connecting end oral area point, physical isolation between the Part I and Part II.
The present invention is also described below battery cooling system, and it uses above-mentioned battery heat control device, and the cooling system also wraps
Cooling pump, coolant heat exchanger and corresponding water pipe are included, wherein, radiator is that coolant carries out direct heat exchange with surrounding air
Gas-liquid heat exchanger.Due to using above-mentioned battery heat control device, the heat exchange efficiency of battery is very high, battery body and cooling
Heat transfer resistance between liquid is very low, heat transfer temperature difference is very small；So ensureing material in battery body（Such as electrolyte, barrier film
With solid electrolyte interface film SEI）Not on the premise of overtemperature, coolant can be allowed to have higher temperature, that is, reduce battery
The requirement to the external world is cooled down, reduces cooling cost, so as to use above-mentioned gas-liquid heat exchanger.
More than resistance to cooling corrosion aluminum plastic film and soft-package battery that thus aluminum plastic film wraps up, aluminium foil layer or initially
Contacted as water-touching layer with coolant, or treat outside protective layer（Such as nylon membrane）Connect after stripping as water-touching layer with coolant
Touch.
Brief description of the drawings
The first aluminum plastic film structural representation of Fig. 1；
Second of aluminum plastic film structural representation of Fig. 2；
The third aluminum plastic film structural representation of Fig. 3；
Fig. 4 use the application schematic diagram of the battery of the aluminum plastic film；
Fig. 5 soft-package battery schematic diagrames；
Fig. 6 soft-package battery heat control device schematic diagrames.
Fig. 7 is individual layer aluminium alloy（Left figure）With composite bed aluminium alloy（Right figure）Corrosion resistance contrast test design sketch；
Fin dividing plate shown in Fig. 8 is stagger arrangement saw tooth fin, including multiple tooth form units, connection shape inside same row tooth form unit
Into fluid passage, arrangement is staggered front to back between adjacent tooth form unit, the top and bottom plane of tooth form unit directly connects with battery
Touch.
Fin dividing plate shown in Fig. 9 is plain fin, including the flat board up and down that parallel riser connects with riser both ends, is put down
Directly contacted between plate and battery, fluid passage is formed between riser.
Embodiment
With reference to instantiation, the present invention is described further, and protection scope of the present invention includes but is not limited to this.
Embodiment 1
Such as accompanying drawing 1, there is provided a kind of aluminum plastic film, the aluminum plastic film include aluminium foil layer 1 and be compound in the surface of aluminium foil layer 1 plastic layer 2,
3, wherein, the material of aluminium foil layer 1 is 3003 aluminium alloys.Ecto-entad is made up of overcoat 2, aluminium foil layer 1 and hot sealing layer 3 successively, outside
Layer overcoat 2 uses nylon（ON）, internal layer hot sealing layer 3 uses cast polypropylene film（CPP）, the internal layer hot sealing layer 3 is simultaneously
Insulating effect is played, keeps the electric insulation between aluminium foil layer 1 and internal electrolyte.Divide between interior outer plastic layer 2,3 and aluminium foil layer 1
Do not pass through adhesive 4,5（Or solid）It is bonded compound.Adhesive phase is made up of any one of following resin, these
Resin is polyester-urethane resin, polyethers-urethane resin, isocyanate resin and unsaturated carboxylic acid graft vistanex.
More than, aluminium foil layer 1 can also be substituted using other rustproof aluminum alloys, such as 5 be rustproof aluminum alloy or other 3 be rustproof aluminum alloy, more
Specifically such as：3004th, 3005,3105,5052,5086 etc.；Aluminium foil layer 1 can also use 6 line aluminium alloys to substitute, and such as 6063
Deng.Certainly, aluminium foil layer can also be fine aluminium, and fine aluminium is 1050 aluminium alloys, either 1060 aluminium alloys or 1100 aluminium alloys, or
Modified of the person based on above-mentioned fine aluminium basic model.These fine aluminiums also have good corrosion resistance.
Thus the soft-package battery that aluminum plastic film is formed can be immersed directly in coolant, and with long-term resistance to cooling corrosion work(
Can, wherein coolant is preferably the water base coolant containing ethylene glycol or/and propane diols.During soft-package battery is formed,
Need to carry out deep-draw technique.Soft-package battery is immersed in coolant after a period of time, and nylon layer 2 may be swelled dissolving stripping
From, but this does not interfere with the insulating properties, sealing and long-term resistance to cooling corrosion of aluminum plastic film.Due to the plastic-aluminum of the soft-package battery
Film possesses long-term resistance to cooling corrosion function, therefore soft-package battery can be immersed directly in coolant and be cooled down.So bring
Beneficial effect be soft-package battery heat exchange efficiency it is very high, will not also overheat when high current is done work, can so improve
The power density and reliability of whole battery system.
Relative to 8 line aluminium alloys, the rustproof aluminum alloy of 3 systems or 5 systems has more preferable resistance to anti-icing fluid corrosive nature, its corrosion resistance longevity
Order longer more reliable.
Embodiment 2
As accompanying drawing 2 provides a kind of aluminum plastic film, the aluminum plastic film includes aluminium foil layer 1 and is compound in the plastic layer of aluminium foil layer both side surface
2nd, 3, wherein, aluminium foil layer 1 is by 3 line aluminium alloy aluminium foil layers 7（Core）With 7 line aluminium alloy aluminium foil layers 6（Pi Cai）It is compounded to form.Such as adopt
With 3003 aluminium alloys and 7072 aluminium alloy compounds, 7072 aluminium alloy layers 6 are compound in the outside of 3003 aluminium alloy layers 7.In other words, should
By hot sealing layer, 3003 aluminium foil layers, 7072 aluminium foil layers and nylon layer, lamination is formed aluminum plastic film successively, wherein aluminium foil layer and plastic layer with
Traditional adhesive bonding.In other words, each layer is the aluminum plastic film from inside to outside：Hot sealing layer, adhesive layer, 3003 aluminium foil sandwich layers,
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 less than the corrosion potential of 3003 aluminium alloys, when being contacted with coolant, 7072 aluminium alloy conducts
The anode being sacrificed, protects core not to be corroded.Hot sealing layer thickness is preferably 30 ~ 50 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 whole
The 10% of individual 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 can use O state or H14 states or H16 states, wherein preferably O shapes
State.
The aluminium foil layer of the present embodiment so not only improves long-term resistance to antifreeze corrosion than the aluminium foil thickness in traditional aluminum plastic film
Performance, be advantageous to the water vapor barrier property of aluminum plastic film again, so as to ensure the long-term reliability of soft-package battery packaging.
Embodiment 3
The present embodiment and the structure of embodiment two are substantially similar, and aluminium alloy layer 1 is also compounded to form by core 7 and skin material 6, skin material 6
For anodic coating.Except that 3003 aluminium alloys with addition zinc Zn（Such as following table 3003+1%Zn or 3003+1.5%Zn）
Instead of 7072 aluminium alloys as sacrificial anode layer.3003+1%Zn current potential is about less than in -0.83V ~ -0.89V, its current potential
The current potential of 3003 cores.
The alloy composition of table 1
Embodiment 4
As accompanying drawing 3 provides a kind of aluminum plastic film, the aluminum plastic film includes aluminium foil layer 1 and the thermoplastic resin being compound on the inside of aluminium foil layer
Film layer 3, wherein, aluminium foil layer is composite bed aluminium foil, and aluminium foil layer includes core and the skin material on the outside of core, aluminium foil layer
The corrosion potential of skin material is less than the corrosion potential of core.Further, the core of aluminium foil layer is by corrosion resistant aluminum alloy or fine aluminium
Formed.For example clad aluminum layers of foil 1 is by 3 serial aluminium foil layers 7（Such as 3003）With 7 serial aluminium foil layers 6（Such as 7072）It is compounded to form.Aluminium
Only inner side is compounded with thermoplastic resin film layer 3 in layers of foil 1（Also hot sealing layer 3 can be claimed, such as using CPP）, without outside Buddhist nun
Imperial overcoat.
Hot sealing layer 3（CPP）Thickness is preferably 30 ~ 50 microns, and the whole thickness of clad aluminum layers of foil 1 is preferably 200 microns.Its
In, 7 line aluminium alloy layers 6 are compound in outside, as sacrificial anode；The thickness of 7 line aluminium alloys preferably accounts for the 10% of whole aluminium foil layer 1.
When being packed as soft-package battery and battery is immersed in cooling water, 7 line aluminium alloy is used as water-touching layer.Same inner side thermoplastic
Property resin thin film layer 3 and aluminium foil layer 1 between by aluminum plastic film commonly use adhesive 5 it is be bonded compound.By aluminum plastic film provided above
Manufactured soft-package battery can long period of soaking in coolant, possess long-term resistance to cooling corrosion function.
Embodiment 5
The structure of the present embodiment and example IV is substantially similar, and core layer also uses 3003 aluminium alloys, except that, skin material 6
By metallic zinc（Zn）Layer is aluminium foil layer instead of 7, and metal zinc coating thickness can be preferably 10 ~ 20 microns, can be by spraying zinc technology shape
Into.The current potential of the metallic zinc is lower than the current potential of aluminium alloy core, therefore can be corroded as anode loss protection core.And gold
Category zinc can also effectively prevent aluminium alloy core spot corrosion.
Embodiment 6
The present embodiment introduction employs the battery of above-mentioned aluminum plastic film and the application mode of the battery.A kind of Soft Roll electricity is provided
Pond, include electrode material and polymer dielectric and the aluminum plastic film of outer wrap, wherein, soft-package battery, which uses, to be included
The aluminum plastic film parcel of the composite bed aluminium foil of sacrificial anode function, such as the composite bed Aluminum alloy foil in embodiment two or four, i.e. aluminium
Paper tinsel uses and is compounded with 7072 aluminium alloy skin materials outside 3003 aluminium alloy cores.Soft-package battery uses resistance to anti-freeze cooling liquid immersion above
After the laminated aluminum film of corrosion, the soft-package battery can be immersed in anti-freeze cooling liquid, so as to it is direct with it is antifreeze cold
But liquid carries out heat exchange.As shown in figure 4, after soft-package battery 11 is sealed by top margin 112 and mainboard 13, the body of soft-package battery 11
It is immersed in anti-freeze cooling liquid.The heat transfer effect of so battery is more preferable, the more uniform temperature of battery up and down everywhere.
Embodiment 7
The present embodiment uses the plastic-aluminum membrane structure similar with embodiment two, except that, the adhesive of bonding nylon protective layer
Using the mould release for being easy to separation.I.e. nylon protective layer is similar to mould release membrance.So, in aluminum plastic film deep-draw forming process, Buddhist nun
Imperial layer can protect aluminium foil layer；After the completion of deep-draw shaping, nylon layer can be separated easily with aluminium foil layer, similar so as to be formed
Aluminum plastic film in example IV.
Embodiment 8
The present embodiment introduction employs the Soft Roll polymer Li-ion battery of the aluminum plastic film parcel described in embodiment one, this implementation
Example is roughly the same with embodiment six, except that, the aluminium foil in aluminum plastic film for packing soft-package battery is closed by individual layer aluminium
Gold is formed, and the individual layer aluminium alloy is formed by antirust aluminium foil, is such as formed using 3003 aluminium foils.
Embodiment 9
The present embodiment introduction employs the Soft Roll polymer Li-ion battery of the aluminum plastic film parcel described in embodiment one, this implementation
Example is roughly the same with embodiment six, except that, the aluminium foil in aluminum plastic film for packing soft-package battery is closed by individual layer aluminium
Gold is formed, and the individual layer aluminium alloy is formed by 1 line aluminium alloy paper tinsel, is such as formed using the Aluminum alloy foil of O states 1050 or other fine aluminiums.
Embodiment 10
The aluminum plastic film that the present embodiment is introduced is by thermoplastic resin membrane（That is hot sealing layer, such as polypropylene）With Al-alloy aluminium
Layers of foil is compounded to form.The core layer 7 of aluminium foil layer uses the trade mark, and for 1050 fine aluminium, skin material 6 on the basis of fine aluminium 1050 by adding
The aluminium alloy of 4% ~ 7% Zn-ef ficiency is formed（It is simplified shown as AA1050+4 ~ 7%Zn）, the corrosion potential of skin material is defeated by core, Pi Cai
As anode loss protection core, skin material recombination rate is preferably 10 ± 2%.The condition of heat treatment of Al-alloy aluminium foil layer is to move back
Fiery state（O states）, thickness is preferably 100 ~ 300 microns, more preferably 200 ~ 300 microns.The clad aluminum layers of foil had both had excellent
The good corrosion of resistance to cooling performance, there is good ductility and deep drawability again.
The aluminum plastic film or its aluminium foil require preferable ductility and deep drawability, such as with GB/T 4156-2007
《Metal sheet and strip Erichsen test》The Erichsen number of standard testing, the aluminum plastic film or its aluminium foil is preferably big
In 10 millimeters.
The aluminum plastic film or its aluminium foil require preferably resistance to cooling corrosion performance.Decay resistance test method uses
The conventional OY aqueous solution of heat exchanger aluminothermy transmission industry（Oyama Water Solution）Corrosion test.The OY aqueous solution is rotten
Corrosion test approximately as：
Each area is 160cm2Foil samples proportioning 500mL the OY aqueous solution, pH=3.0 of the OY aqueous solution.
OY aqueous compositions：Chlorion (Cl-):195 ± 1 mg/litres, sulfate ion (SO4 2-):60 ± 0.2 millis
G/l, iron ion (Fe3+):30 ± 0.1 mg/litres, copper ion (Cu2+):1 ± 0.01 mg/litre.
OY aqueous temperatures：88 oC, stirred 8 hours with 0.6-0.9 m/s (200rpm) speed, it is small then to stand 16
When；Repeat above-mentioned circulation.
In the experiment of above-mentioned OY aqueous corrosions, the corrosion fatigue life of the aluminium foil of the aluminum plastic film is preferably greater than 1000 small
When.
More than, the corrosion fatigue life of aluminum plastic film or its aluminium foil can also be soaked on real vehicle the corrosion resistant in anti-icing fluid with it
Erosion service life is assessed, aluminum plastic film of the service life such as selected on real vehicle more than 5 years, preferably greater than 10 years, more
Preferably greater than 15 years.
Embodiment 11
The present embodiment introduces a kind of battery use packing material, and the packaging material uses metallo-plastic composite membrane, and wherein metal is pure
Copper foil or copper alloy foil, hot sealing layer is using PP as thermoplastic resin membrane.The composite membrane formed using copper foil with PP.Copper is gathered around
There are preferable corrosion stability and more preferable ductility.
Embodiment 12
The present embodiment introduction uses the soft-package battery that above battery use packing material makes, and the battery is by the bag outside battery core and battery core
Package material is formed, and the battery core of the battery includes positive and negative electrode and polymer dielectric, and battery core outer packaging is used using above battery
Packaging material.Because packaging material considers the function of resistance to coolant immersion, thus the battery can directly be soaked in for a long time it is cold
But liquid（Such as automotive antifreezing liquid）In and ensure reliability, security and the high efficiency of radiating.
Embodiment 13
As shown in Figure 5 and Figure 6, the battery heat control device of the present embodiment introduction uses can directly be soaked in coolant for a long time above
In soft-package battery.The soft-package battery heat control device, includes soft-package battery 11 and coolant, the soft-package battery 11 it is outer
Packaging directly contacts with coolant, and the soft-package battery 11 is by the packaging material of any of the above-described kind of anti-cooling corrosion（As resisted
Cool down the aluminum plastic film of corrosion）Formed.The heat control device also includes dividing plate 12（Such as stagger arrangement saw tooth fin）；The dividing plate 12
At least part surface directly contacts with least part outer surface of soft-package battery 11, and is provided with fluid passage in dividing plate 12
121；One soft-package battery 11 forms a battery unit（Two soft-package batteries can certainly be used to form a battery list
Member）, battery unit is arranged at intervals with dividing plate 12.On the one hand dividing plate plays a part of to support soft-package battery, it is cold on the other hand to play tissue
But the effect of liquid stream field.
The aluminum plastic film is sealed around by the battery core body, and only battery electrode or electrode connecting end mouth is from the plastic-aluminum
Stretched out in film；Battery heat control device also includes mainboard 13, and the mainboard 13 is provided with socket, and the battery is stretched out of aluminum plastic film
The part gone out（That is positive and negative electrode lug 111）It is inserted into by the socket on mainboard 13.Preferably, the part top margin of battery
112 are inserted on mainboard 13 also by the socket.
The battery heat control device also includes shell body 14, and the inside of shell body 14 is provided with accommodating chamber, the electricity
Pool unit is placed in the accommodating chamber of the shell body 14 with dividing plate 12, and the shell body 14 also includes fluid intake and fluid
Outlet（Not shown in figure）.
The mainboard 13 is located in the accommodating chamber of the shell body 14, and the accommodating chamber is separated as two portions
Point, Part I accommodates cell body and dividing plate 12, Part II accommodate the electrode that is stretched out from the aluminum plastic film and/or
Electrode connecting end oral area point, physical isolation between the Part I and Part II.
Described battery heat control device also includes coolant, and the coolant is water or comprising ethylene glycol and water
Mixed liquor or mixed liquor or anti-freeze cooling liquid comprising propane diols and water.
Preferably, the dividing plate 12 uses metal material, and the corrosion potential of dividing plate 12 is defeated by aluminium foil corrosion electricity in aluminum plastic film
Position, such as packaging material metal foil select AA1050 aluminium alloys, and dividing plate 12 selects AA1050+5%Zn.Or the corrosion of dividing plate 12
Current potential 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 A A1050/
AA1050+5%Zn aluminium alloys, dividing plate 12 select AA1050+7%Zn.So dividing plate can also play anodic protection, further prevent
Only battery corrosion fails.
Embodiment 14
The present embodiment is roughly the same with embodiment 10, except that, the core and skin material of composite bed aluminium alloy can be from such as following tables
Option one selects any into option 6：
Embodiment 15
The present embodiment is roughly the same with embodiment 10, except that, assess and select in the following manner processability（Or deep-draw
Performance）Excellent aluminum foil material and aluminum plastic film.
Processability test and assessment are carried out according to following A-F：
A, core rod uses Teflon material, and die size is 34mm × 44mm, fillet R=0.6mm.Adjusted and rushed according to test request
Molded tester form depth a certain numerical value between 5.0 mm ~ 15.0mm, regulation compressed air pressure make mould side pressure big
In equal to 3.0 MPa.
B, surfacing, cleaning, no wrinkle sample film are taken, width is cut and is not less than 200 mm not less than 100 mm, length
Film for test.
C, the CPP of film is put into punch forming tester facing to core rod.Ensure that film is smooth non-wrinkled, more than side pressure film
Amount is sufficient.
D, button is pressed, carries out punch forming, it is stand-by that sample is carefully taken out after the completion of punch forming.
E、：The CPP faces of sample after punch forming are combined with the CPP faces of non-punch forming sample, ensure that sample is smooth
Without deformation, along punch forming edge no more than being sealed at 2 mm, heat seal condition is：Heat-sealing temperature 190oC（It is uniform up and down
Heating）, heat-sealing pressure is 0.2 MPa, and the heat-sealing time is 6 seconds.
F, the punch forming sample after sealing well is estimated, checks that sample has crack-free, lamination.
Aluminum plastic film or aluminium foil of the form depth more than 5.0mm are filtered out by above method；More preferably filter out shaping
Depth is more than 10.0mm aluminum plastic film or aluminium foil.
Embodiment 16
The present embodiment is roughly the same with embodiment 10, except that, it is not to be tested using OY to assess, but use similar
5.14 sections " experiment of internal corrosion performance " in QC/T 468-2010 standards are commented the corrosion fatigue life of the aluminium foil of aluminum plastic film
Estimate, preferably aluminium foil corrosion fatigue life is more than 1000 hours.
Wherein, in the standards of QC/T 468 5.14 section in corrosion resistance test detection approximately as：
Test temperature：88oC
Mixed solution flow：1.3~1.6 L/s（Rise per second）
Mixed solution：
Anti-icing fluid model：45% ethylene glycol antifreeze, solidification point：-30 oC
ASTM water：1L（Rise）Distilled water in contain 148mg（Milligram）Vulcanized sodium, 165mg sodium chloride, 138mg carbonic acid
Hydrogen sodium.
Mixing ratio：40% anti-icing fluid+60%ASTM water.
Embodiment 17
The present embodiment is roughly the same with embodiment 10, except that, the core and skin material of composite bed aluminium alloy can be from such as following tables
Option one selects any into option 4：
Embodiment 18
The present embodiment provides a kind of aluminum plastic film, and the aluminum plastic film includes aluminium foil layer and is compound in the plastic layer of aluminium foil layer surface；Aluminium
Layers of foil is composite bed aluminium foil, and aluminium foil layer includes core and the skin material on the outside of core, the corrosion potential of the skin material of aluminium foil layer
Less than the corrosion potential of core；Wherein, multilayer skin material of the skin material on the outside of core by two layers of skin material or more than two layers is compound
Formed, corrosion potential reduces successively from inside to outside.
For example aluminium foil layer is followed successively by core, first layer skin material, second layer skin material from inside to outside in aluminum plastic film, core is
AA1050 aluminium alloys, first layer skin material adds 2%Zn aluminium alloy, second layer skin material to be AA1050 on the basis of being AA1050 on the basis of
Add 4%Zn aluminium alloy.So corrosion potential is：Core>First layer skin material>Second layer skin material.So can further it ensure
Corrosion is the banded corrosion successively corroded, so as to further avoid pit corrosion, ensures cell safety.
Embodiment 19
The present embodiment is to the aluminium alloy of individual layer 1050 and composite bed aluminium alloy（Core is 1050 aluminium alloys, skin material is that current potential is relatively negative
Sacrifice layer）Corrosion resistance contrast test is carried out in OY experiments.
Anti-icing fluid system is selected to carry out OY experiments, experimental period is 4 weeks, and carrying out nitric acid dousing to material surface after experiment goes
Except corrosion product, concrete condition are as follows：
As shown in Figure 7, after anti-icing fluid system OY is tested 4 weeks, left figure show AA1050 individual layers aluminium alloy, and there occurs more bright
Aobvious spot corrosion, spot corrosion are more serious；And obvious spot corrosion does not occur for the aluminum alloy surface that right figure show compound sacrifice layer.Thus
Understand, by the more negative skin material of aluminium alloy core surface recombination corrosion potential, can effectively suppress the generation of spot corrosion.By
After the aluminum plastic film inner surface plastic layer heat-sealing that above-mentioned composite bed aluminium foil is formed, the time of the resistance to cooling water corrosion of aluminium foil disclosure satisfy that vapour
Car requirement；Simultaneously because aluminium foil inside core for fine aluminium, its electrolyte-resistant corrosive power also superior to traditional ferro-aluminum aluminium alloy,
So as to ensure the life-span of battery and safe handling.
The specific embodiment of the present invention is described in detail above, but it is only used as example, and the present invention is not intended to limit
In particular embodiments described above.To those skilled in the art, it is any to the invention carry out equivalent modifications and replace
In generation, is also all among scope of the invention.Therefore, the impartial conversion made without departing from the spirit and scope of the invention and repair
Change, all should be contained within the scope of the invention.
Claims (4)
1. a kind of aluminum plastic film, it is characterised in that the aluminum plastic film includes aluminium foil layer and is compound in the plastic layer of aluminium foil layer surface；Aluminium
Layers of foil is composite bed aluminium foil, and aluminium foil layer includes core and the skin material on the outside of core, the corrosion potential of the skin material of aluminium foil layer
Less than the corrosion potential of core；Wherein, multilayer skin material of the skin material on the outside of core by two layers of skin material or more than two layers is compound
Formed, corrosion potential reduces successively from inside to outside；Wherein, plastic layer is only compound in the inner side of aluminium foil layer.
2. a kind of plastic-aluminum film manufacturing method, corresponding aluminium foil is selected by following resistance to aqueous corrosion experiment first：Corrosion-resistant survey
Pilot production OY aqueous corrosion experimental methods, the corrosion fatigue life under the corrosion tests of the aluminium foil are more than 500 hours；
Then the aluminium foil and plastic sheeting are combined again；Wherein, plastic layer is only compound in the inner side of aluminium foil layer.
3. a kind of battery packages aluminum plastic film, it includes the aluminium foil as water blocking layer, and the aluminium foil has following resistance to coolant rotten
Corrosion energy：Corrosion-resistant method of testing is tested for OY aqueous corrosions；The corrosion fatigue life under above-mentioned environment of the aluminium foil is more than
500 hours.
4. a kind of soft-package battery, it uses laminated aluminum film, and the soft-package battery body has following resistance to cooling corrosion performance：It is resistance to
Corrosion test method is tested for OY aqueous corrosions；The body of the soft-package battery is soaked in coolant, the soft-package battery
Corrosion fatigue life under above-mentioned environment is more than 500 hours.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610427155 | 2016-06-15 | ||
| CN2016104271552 | 2016-06-15 |
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| CN107521183A true CN107521183A (en) | 2017-12-29 |
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| CN201710453517.XA Pending CN107521183A (en) | 2016-06-15 | 2017-06-15 | Packaging material manufacture method and soft-package battery |
| CN201720697767.3U Expired - Fee Related CN210956727U (en) | 2016-06-15 | 2017-06-15 | Packaging material and soft package battery |
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| CN201720697767.3U Expired - Fee Related CN210956727U (en) | 2016-06-15 | 2017-06-15 | Packaging material and soft package battery |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210107086A1 (en) * | 2019-10-10 | 2021-04-15 | GM Global Technology Operations LLC | Pretreatment of weld flanges to mitigate liquid metal embrittlement cracking in resistance welding of galvanized steels |
| WO2023041086A1 (en) * | 2021-09-20 | 2023-03-23 | 陈带秀 | Energy storage device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113381102A (en) * | 2021-05-07 | 2021-09-10 | 厦门大学 | Aluminum plastic film with excellent heat dissipation performance for battery packaging and preparation method thereof |
-
2017
- 2017-06-15 CN CN201710453517.XA patent/CN107521183A/en active Pending
- 2017-06-15 CN CN201720697767.3U patent/CN210956727U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210107086A1 (en) * | 2019-10-10 | 2021-04-15 | GM Global Technology Operations LLC | Pretreatment of weld flanges to mitigate liquid metal embrittlement cracking in resistance welding of galvanized steels |
| US11548091B2 (en) * | 2019-10-10 | 2023-01-10 | GM Global Technology Operations LLC | Pretreatment of weld flanges to mitigate liquid metal embrittlement cracking in resistance welding of galvanized steels |
| WO2023041086A1 (en) * | 2021-09-20 | 2023-03-23 | 陈带秀 | Energy storage device |
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| Publication number | Publication date |
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| CN210956727U (en) | 2020-07-07 |
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