CN208173634U

CN208173634U - Efficient soft-package battery heat control device

Info

Publication number: CN208173634U
Application number: CN201720496500.8U
Authority: CN
Inventors: 不公告发明人
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-05-08
Filing date: 2017-05-07
Publication date: 2018-11-30
Anticipated expiration: 2027-05-07
Also published as: WO2017193880A1; CN107346807A; CN107346806A

Abstract

Soft-package battery heat control device in particular to can be applied to the soft-package battery heat control device being soaked in cooling water.And for the insufficient defect of the anti-corrosion property of battery use packing material in the prior art energy, corresponding package material is provided, which is formed by the aluminium foil layer of resistance to cooling water corruption and the plastic layer of aluminium foil layer surface.

Description

Efficient soft-package battery heat control device

Technical field

The utility model relates to soft-package battery heat control devices, in particular to can be applied to be soaked in the Soft Roll in cooling water Battery heat control device, for example can be applied to Vehicular dynamic battery field and the water-cooling system in energy-storage battery field is medium.

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 is and this heat exchange using water-cooled plate or cooling tube and battery contact heat-exchanging Thermal contact resistance is high between cooling water and battery in 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 has obtained a degree of raising, the poor fluidity of insulating oil, heat exchange efficiency It is low, and there are also the problems such as after-sales service to exist.Make a general survey of in the prior art not by soft-package battery be immersed directly in water or Application in anti-icing fluid, more without reserve battery packaging material adaptable therewith.

The aluminum plastic film that soft-package battery is packed in the prior art generallys use 8 line aluminium alloy aluminium foils, after this aluminum foil annealing For soft aluminium foil, scouring depth good moldability.Current battery packaging material is primary concern is that electrolyte-resistant corrosivity, major technique side Case is to form anti-corrosion layer by the way that physically or chemically mode is modified towards the side of electrolyte in packaging material, and effect is to prevent Electrolyte corrosion aluminium foil inner surface and lead to aluminum plastic film splitting.Existing aluminum plastic film outermost layer all contains the protections such as polyamide use The hydrolysis ability of plastic foil, these plastic protective film for plastics is poor, and hydrolysis failure is easy to if with moisture.

In order to improve the hydrolysis ability of aluminum plastic film, the common means of the prior art are the hydrolysis for improving outer protective film Ability, for example, using than nylon membrane more resistant to water PET film as outermost protective film.Using after PET film to the water in resistance to air Vapour or water droplet corrosive nature increase, but are not suitable for contacting with water for a long time.

Utility model content

It is still to restrict the bottleneck problem of industry development based on current power battery thermal management problem, the utility model is from soft The cooling demand of packet battery is set out, and in order to obtain higher battery cooling performance, the utility model is courageously used soft-package battery The cooling scheme being directly soaked in cooling water.However, by furtheing investigate and just being found after test for a long time, existing battery packages Material does not adapt to this immersion water-cooled requirement, and existing soft-package battery is packed for the anti-second of outermost nylon protective layer in aluminum plastic film Glycol anti-icing fluid corrosive nature is poor, and the aluminium foil as water blocking layer is alfer, and mechanical strength and anti-ethylene glycol antifreeze are rotten Corrosion energy（Especially corrosion resistance）Also poor, even if it uses traditional technological means（As aluminium foil surface makees corrosion-inhibiting coating Processing）Also it is easy to appear spot corrosion, therefore existing aluminum plastic film is not able to satisfy long-term immersion water-cooled system requirements.On overcoming Defect is stated, the utility model creatively provides following new battery cooling system scheme and battery packaging material scheme, with solution Certainly above-mentioned series technique problem and the thermal management requirements for meeting 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.

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）Be compound in metal foil layer（It is preferred that For aluminium foil layer）The 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 of package（Preferably aluminum plastic film）, the metal foil layer（Preferably aluminium foil layer）Inner surface Plastic layer by electrolyte and metal foil layer（Preferably aluminum plastic film）Isolation.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）In, it is preferable that it is 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）Leaching 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.

In a kind of preferred embodiment of the utility model, aluminium foil layer is single layer, it is highly preferred that aluminium foil layer is by corrosion resistant aluminium Alloy is formed.Wherein, so-called corrosion-resistant to refer to resistance to cooling water or antifreeze corrosion.If not specified, institute in the utility model Call it is corrosion-resistant each mean resistance to cooling water or antifreeze corrosion, without refer to electrolyte resistance corrode.The utility model uses cold-resistant But the technological means of aqueous corrosion is also different from the technological means that traditional electrolyte resistance corrodes.

In a kind of preferred embodiment of the utility model, aluminium foil layer is composite layer, and aluminium foil layer includes core material and is located at core Skin material on the outside of 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 the core material is located at aluminium Between plastic layer on the inside of layers of foil and skin material.It is furthermore preferred that packing the aluminum plastic film of soft-package battery in the battery heat control device The skin material of aluminium foil is immersed directly in the coolant liquid.

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.

Wherein it is preferred to which the only single side of aluminium foil layer is compounded with plastic layer, also, it is highly preferred that plastic layer is only compound in aluminium The inside of layers of foil.It wherein, include following situation in above scheme：It is compound in the plastic layer of a certain side surface of aluminium foil layer, it both can be with It is monolayer plastic, is also possible to laminated plastics.

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 alternatively referred to as 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）-B）In any one structure：

A）The aluminum plastic film has the lamination being made of inside heat sealing layer, intermediate aluminium foil layer, outside plastic protective layer Body, wherein intermediate aluminium foil layer is that the composite layer aluminium foil with galvanic anode protection protective function is formed.For example, the composite layer aluminium foil is by core Material and corrosion potential are formed lower than the skin material of core material.

B）The aluminum plastic film has the laminated body being made of inside heat sealing layer, outside aluminium foil layer, wherein outside aluminium foil Layer is that the composite layer aluminium foil with galvanic anode protection protective function is formed.The aluminum plastic film does not contain outside plastic protective layer.

Wherein, the heat sealing layer of inside can also claim thermoplastic resin film layer, and the plastic protective layer in outside can also claim resistance to Thermal 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.

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.It is matched by skin material in this clad aluminum foil with the reasonable current potential of core material, is conducive to avoid aluminium foil（Especially core material）Point Corrosion.

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.Water base coolant liquid can also be to include various antifreezing agents（Such as Ethyl alcohol, ethylene glycol, propylene glycol etc.）To form the anti-icing fluid with antifreeze function.So the coolant liquid of the utility model includes Following type：Pure water, ethylene glycol and mixed liquor of water etc..

Further, the core material 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.In the fine aluminium aluminium purity 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 product（Such as automobile or automobile power battery）Normally 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.Corrosion resistant described in the utility model The aluminium alloy of erosion, can be selected from following rustproof aluminum alloy in other words has the aluminium alloy of good corrosion resistance：1 line aluminium alloy, 3 line aluminium alloys, 5 Line aluminium alloy, 6 line aluminium alloys.Due to corrosion resistant aluminum alloy（Such as alumal AA3003, AA omitted below）Or fine aluminium tool There is good resistance to cooling corrosion function, therefore as the aluminium foil layer of aluminum plastic film, it can be applied to directly contact with coolant liquid Application.

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（Or it is defeated by）The corrosion potential of 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 monolayer material, be also possible to multilayer material 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 ~ 20% 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 battery core That side of internal 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 uses cast polypropylene film（CPP）, outer layer is using 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.

Further, corrosion resistant aluminum alloy is selected from aluminium aluflex perhaps magnalium aluminium alloy or the conjunction of magnalium sial Gold or aluminium silico-aluminum alloy.Corrosion resistant aluminum alloy is more preferably aluminium aluflex or magnalium aluminium alloy.

Alternatively, further, corrosion resistant aluminum alloy is selected from 3 line aluminium alloys perhaps 1 line aluminium alloy or 5 be that aluminium closes Gold perhaps 6 line aluminium alloys or 4 line aluminium alloys.These aluminium alloys have good corrosion stability in other words.Corrosion resistant aluminium closes Gold is more preferably 3 line aluminium alloys or 1 line aluminium alloy.

The utility model aluminium alloy designations use association of Alcoa respective standard.

Further, if aluminium foil layer is composite layer, 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%。

Preferably, the composite layer aluminium foil is compounded to form by following core material and skin material, and the core material is to contain following component （Mass percent）Aluminium alloy：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 is aluminium；

Or；The core material is to contain following component（Mass percent）Aluminium alloy：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 to contain following component（Mass percent）Aluminium allumen：Zn 4-7wt%；Si 0.5- 1.0wt%；Ti 0.1-0.2wt%；Fe 0.5-1.5wt%；

Alternatively, the skin material is to contain following component（Mass percent）Aluminium allumen：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 is：The composite layer aluminium foil is compounded to form by following core material and skin material, the core material be containing Following component（Mass percent）Aluminium alloy：

Si≤0.9wt%；Fe≤1.7wt%；Cu≤0.1wt%；Mn≤0.2wt%；Mg≤0.05wt%；Zn≤0.1wt%； Ti≤0.08wt%；Cr≤0.05wt%；Other impurity elements are individually≤0.05%；Other impurity elements amount to≤0.15%；Remaining For aluminium；

The skin material is to contain following component（Mass percent）Aluminium allumen：

Zn 4-7wt%；Fe 0.5-1.5wt%.

Alternatively, further, if aluminium foil layer is composite layer, the skin material of aluminium foil layer is selected from 7 line aluminium alloys or 2 be aluminium conjunction Gold.That is skin material corrosion potential in 7 systems or 2 line aluminium alloys such as selects 7072 aluminium lower than the aluminium alloy of core material corrosion potential 2024 aluminium alloy of alloy or Al clad.The skin material of aluminium foil layer is more preferably 7 line aluminium alloys.For example, 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, other than 7072 basic model, 7072 other improvements type is also can be selected in skin material.

Alternatively, further, if aluminium foil layer is composite layer, the skin material of aluminium foil layer is selected from the modified aluminium alloy of addition zinc. Wherein, skin material is preferably 1 line aluminium alloy for adding zinc or 3 line aluminium alloys for adding zinc, for example addition mass percent is 1.0%- 3003 aluminium alloy modifieds of 2.5% zinc.3003 current potentials for being added to zinc reduce, and about -0.82 to -0.88V, therefore be lower than The current potential of 3003 core materials.Alternatively, skin material is preferably in 1 line aluminium alloy（Fine aluminium）On the basis of addition zinc formed aluminium alloy, such as Add the 1050 aluminium alloy modifieds that mass percent is 4%-7% zinc.

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 alloy.

Further, fine aluminium is that perhaps perhaps 1070 aluminium alloys or 1100 aluminium close 1060 aluminium alloys 1050 aluminium alloys Gold.

Further, if aluminium foil layer is composite layer, the skin material of aluminium foil layer is 7072 aluminium alloys or 7075 aluminium alloys.

Aluminium foil described in the utility model refers to for film-form（Or flake）Pure aluminum or aluminum alloy, 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 80-500 microns in aluminum plastic film.The thickness is more highly preferred to It is 100-300 microns.The thickness is more preferably 100-200 microns again.

Alternatively, further, in aluminum plastic film aluminium foil layer with a thickness of 80-100 microns perhaps 100-150 microns or 150-200 microns perhaps 200-300 microns or 300-500 microns.

Further, the condition of heat treatment of aluminium foil layer is annealed condition（O state）.

Further, the outside of aluminium foil layer passes through mould release bond plastic protective layer.Plastics in this way outside aluminium foil layer are protected Sheath is convenient for being separated.

Further, the heat-sealing layer material can be polypropylene（PP）Film is also possible to polyethylene（PE）Film.

Further, the material of the plastic protective layer can be nylon（ON）Film is also possible to polyester（PET）It is thin Film.

It include following technical solution in above technical scheme：If the aluminium foil layer of aluminum plastic film is single layer（Non-composite layer）, then should Aluminium foil layer can be 3 line aluminium alloys perhaps 1 line aluminium alloy perhaps 5 line aluminium alloys or 6 line aluminium alloys.If the aluminium of aluminum plastic film Layers of foil is composite layer, then the core material of the aluminium foil layer can be 3 line aluminium alloys or 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.Wherein, core material More preferably 1 line aluminium alloy or 8 line aluminium alloys, the composite layer aluminium foil with such core material have better corrosion resistance and deformation energy Power.

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 utility model aluminum plastic film provided above, such as aluminium foil layer use 3 line aluminium alloys（Such as 3003）, it is more highly preferred to The ground aluminium alloy compound layer compound using 3 line aluminium alloys and 7 line aluminium alloys（Such as 3003/7072）, therefore it is with excellent resistance to Coolant liquid corrosive nature can be applied in automobile-used Soft Roll electrokinetic cell system, and can allow the aluminum plastic film and coolant liquid of soft-package battery Direct contact heat transfer.

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 aluminum plastic film aluminium foil inside does not do traditional erosion shield processing, electricity in the utility model heat management system The security performance of pond 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 Energy：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.

Alternatively, the aluminum plastic film or its aluminium foil layer have following resistance to cooling corrosion performance：OY aqueous corrosion test or Internal corrosion resistance test in person's ASTM D2570 standard；The aluminum plastic film or its aluminium foil layer it is corrosion-resistant in above-mentioned test Service life is greater than 150 hours, or is greater than 200 hours, or is greater than 336 hours.Further, the aluminum plastic film or its aluminium foil layer is resistance to Corrosion life is greater than 500 hours.Further, the corrosion fatigue life of the aluminum plastic film or its aluminium foil layer 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；It is further again, the plastic-aluminum The corrosion fatigue life of film or its aluminium foil layer is greater than 2500 hours.

In the prior art with a thickness of 40 microns of 8 systems（Such as 8021 or 8079）Longevity of the aluminium foil in the test of OY aqueous corrosion Life about 98 hours, it is not able to satisfy Car design life requirements, therefore is not able to satisfy wanting for the anti-icing fluid immersion type type of cooling It asks.Therefore, if need to have above-mentioned corrosion resistance, in aluminum plastic film aluminium foil need to have suitable aluminum alloy materials form and/or Suitable thickness.

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）, single layer 3 line aluminium alloys or 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 that AA7072 is compounded to form（That is 120 microns of composite layer aluminium alloy overall thickness）, both the above aluminium foil is selected 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 above scheme can be used.

Alternatively, be described from vehicle application angle, preferably aluminum plastic film or the resistance to coolant liquid of its aluminium foil（As mainly by ethylene glycol With the anti-icing fluid of water composition）The service life of corrosion is preferably greater than 10 years greater than 5 years, is 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 plastic-aluminum The press depth value or Erichsen number of aluminium foil in film are greater 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 cannot after Erichsen test There is 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, composite layer aluminium foil can also be allowed to be heated at high temperature, allow in skin material Zn-ef ficiency to core material Gradually spread, thus aluminium foil layer from outside to inside during, the variation of the content of Zn-ef ficiency continuously gradually, corrosion potential is also continuous It is changed stepwise, avoids Zn-ef ficiency content and the variation of corrosion potential cliff of displacement formula or mutation, to be more advantageous to etch state conversion For uniform banded corrosion.The anticorrosion mechanism of composite layer aluminium foil is different from traditional corrosion-inhibiting coating processing sides such as aluminium foil surface chromaking Formula, composite layer aluminium foil itself are all aluminiums, by adjusting aluminium foil inside different layers corrosion potential improve etch state, i.e., by Spot corrosion guidance is banded corrosion, prevents aluminium foil perforation and battery failure.It is immersed in after being handled according to aluminium foil outer surface chromaking In cooling water, although the corrosion rate of aluminium foil can be reduced, the etch state of aluminium foil cannot be improved, the inhibition of spot corrosion is made With little.

It is worth noting that the boundary between above-mentioned each layer of composite layer has not been ten clearly demarcated after by high-temperature diffusion process Really, ingredient and the not stepped mutation of current potential, the process of a gradual change between each layer.So described in the utility model Composite layer aluminium foil, both including compound between the multilayer different aluminum alloys before non-high-temperature process；It also include hanging down after high-temperature process Directly on the direction of aluminium foil surface, the composite layer of constituent content gradual change or corrosion potential gradual change in aluminium foil.For example, high annealing work Skill condition can choose for：200 ~ 400 degrees Celsius of annealing temperature, annealing time 1.5 ~ 3.5 hours；May also pass through repeatedly annealing with Reach perfect condition.

Soft-package battery heat control device as described above includes the Soft Roll packed by any of the above-described kind of battery packaging material Battery, can also further comprise coolant liquid, and the outer packing of the soft-package battery is directly contacted with coolant liquid.Further, described Battery heat control device included by coolant liquid be water or mixed liquor comprising ethyl alcohol and water or comprising ethylene glycol with The mixed liquor of water or mixed liquor or other anti-freeze cooling liquids comprising propylene glycol and water.These coolant liquids are current automobile Upper and industrial common coolant liquid, their not instead of insulated type cooling mediums, conductive energy（Including faint conduction Performance）Conductive coolant liquid；It is above-mentioned conductive cooling but compared to the insulated type cooling medium of silicone oil or transformer oil etc Liquid has 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.

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（Such as acute angle, right angle or 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 thermal control system 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）, coolant liquid heat exchanger and corresponding water pipe.Wherein, coolant liquid heat exchanger is cold But liquid and surrounding air carry out the gas-liquid heat exchanger of 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 from the aluminum plastic film（And/or the fin） 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 in battery body（Such as electrolyte, diaphragm and solid 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 as water-touching layer to outside protective layer（Such as nylon membrane）Water-touching layer is used as after removing 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 formed by thermoplastic resin membrane and metal foil and heat-resistant resin Film laminated, gold Belong to foil between thermoplastic resin membrane and heat-resistant resin film；Wherein, metal foil is the single-layer metal with corrosion stability, Or metal foil includes core material and the skin material on the outside of core material, the corrosion potential of the skin material of metal foil is lower than the corrosion of core material Current potential.The metal foil is preferably aluminium foil and/or copper foil and/or stainless steel foil.The thickness of metal foil is preferably 20 to 50 microns, Or 50 to 80 microns or 80 to 150 microns or 150 to 200 microns or 200 to 300 microns.Preferably, on the outside of metal foil not Containing plastic 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 is：The test of OY aqueous corrosion；

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 in the utility model（Oyama Water Solution）Corrosion test is heat exchanger aluminium The OY aqueous corrosion of Heat transmission industry universal is tested.

Plastic-aluminum film manufacturing method described in the utility model, including：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.

Traditional aluminum plastic film there is no the demand and characteristic of long-term hydrolysis, alternatively, resistance in order to improve aluminum plastic film outer layer Steam hydrolysis ability in air is usually improved the hydrolysis ability of outer layer plastic film, for example is protected using fluorine-containing outer layer plastic Cuticula, but its cost, technique and thermal efficiency are poor.Preferred side in multiple technical solutions provided by the utility model Case first is that, only inside is compounded with thermoplastic film to the aluminium foil of aluminum plastic film, i.e., heat-resistant plastic film is not contained on the outside of aluminium foil Or protective film, aluminium foil directly with cooling water contact heat-exchanging.Aluminium foil in the utility model aluminum plastic film not only has barrier steam etc. Effect, and there is the corrosion resistant effect of long-term hydrolysis, also there is molding and packaging effect.Compared to existing aluminum plastic film, this reality It is the improvement of aluminium foil in aluminum plastic film with novel one of main utility model point and omits outside plastic layer, the aluminium foil is by adopting With different structure and/or component, its corrosion resistance and mechanical strength are improved, therefore the aluminium after the plastic foil of outside is omitted Still there is preferable resistant to chemical media corrosive power, anti-pin hole ability and scratch resistance ability, and technique is simpler on the outside of plastic film Just lower with cost, when the aluminum plastic film and cooling water contact heat-exchanging, heat exchange efficiency is higher；Importantly, this is practical new The above-mentioned aluminum plastic film of type also have the function of it is new, that is, have the function of can long-term resistance to cooling water corrosion, therefore can be with long period of soaking cold It but is battery to preferably meet the thermal management requirements of immersion water-cooled soft-package battery cooling system without failing in water The performance boost of system provides reliable guarantee.

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.

Different from other composite layer aluminium foils, aluminium foil is used for the outer packing of soft-package battery in the utility model, needs while simultaneous Care for deformation performance and resistance to cooling water corrosion performance, wherein more preferable scheme first is that using zincification on the basis of fine aluminium core material and fine aluminium Skin material it is compound, not only there is excellent anti-cooling water pitting corrosion, while also there is preferable mouldability and packability.

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.

In addition, the immersion type insulating oil in compared with the prior art is cooling, the utility model is immersion water-cooled to be had very Technical effect outstanding.

As shown in the table, about the comparative analysis between several coolant liquids, either thermal conductivity or mobility, transformer The performance of the insulating and cooling liquids such as oil or silicone oil is far short of what is expected compared with anti-icing fluid or water.

	Anti-icing fluid	Water	Transformer oil	Remarks
					Thermal coefficient (W/m.K)	0.4054	0.6526	0.128	The thermal coefficient the big more is conducive to exchange heat
Volume specific heat (kJ/m³.C)	3668	4112	448	The volume specific heat the big more is conducive to exchange heat
					Dynamic viscosity (mPa.s)	1.4	0.5	8.592	The kinematic viscosity the low to be more more conducive to flow, to more be conducive to exchange heat
Anti-flammability	It is non-combustible	It is non-combustible	Incendivity

Compared to insulating oil, by using anti-icing fluid or water as immersion type cooling medium, the heat-sinking capability of battery can be shown It writes and is promoted.In same cooling system, its heat-sinking capability can be improved 15 ~ 20 times, be embodied in cooling Jie of battery tolerance The ability of matter temperature further promotes 5 ~ 10 degrees Celsius, and the temperature difference is further reduced to 1.0 ~ 2.0 degrees Celsius between battery cell.? For current battery heat management bottleneck problem still in situation very outstanding, this technical effect is exactly that this field is expected very much , above-mentioned heat dissipation effect is that indirect type water cooling or immersion type oil cold are not achieved.

Although the utility model creation is from the motivation for obtaining more efficient soft-package battery cooling performance, this is practical The technical solution of novel middle offer not only obtains splendid cooling performance, but also further deeply solves battery cooling system Many technical problems such as the mechanical strength of system, anticorrosive durability, manufacturing process and cost simultaneously obtain good technical effect.

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；

Fig. 7 is single layer aluminium alloy（Left figure）With composite layer aluminium alloy（Right figure）Corrosion resistance contrast test effect picture；

Fin partition shown in Fig. 8 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. 9 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.

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 1

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 by 3 line aluminium alloy aluminium foil layers 7（Core material）With 7 line aluminium alloy aluminium foil layers 6（Pi Cai）It is compounded to form. 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, each layer is the aluminum plastic film from inside to outside：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 whole The 10% of a 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, O state or H14 state or H16 state can be used in the condition of heat treatment of aluminium foil layer, wherein preferably O shape State.

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 2

The present embodiment and the structure of embodiment 1 are substantially similar, and aluminium alloy layer 1 is also compounded to form by core material 7 and skin material 6, skin Material 6 is anodic coating.The difference is that with 3003 aluminium alloys of addition zinc Zn（Such as following table 3003+1%Zn or 3003+1.5% Zn）Instead of 7072 aluminium alloys as sacrificial anode layer.For the current potential of 3003+1%Zn about in -0.83V to -0.89V, current potential is low In the current potential of 3003 core materials.

1 alloy composition of table

Embodiment 3

If attached drawing 2 provides second of aluminum plastic film, the aluminum plastic film includes aluminium foil layer 1 and the thermoplastic that is compound on the inside of aluminium foil layer Property resin thin film layer 3, wherein aluminium foil layer be composite layer aluminium foil, aluminium foil layer includes core material and the skin material on the outside of core material, aluminium The corrosion potential of the skin material of layers of foil is lower than the corrosion potential of core material.Further, the core material of aluminium foil layer is by corrosion resistant aluminum alloy Or fine aluminium is 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）Complex At.Only inside is compounded with thermoplastic resin film layer 3 on aluminium foil layer 1（It can also claim hot sealing layer 3, for example use CPP）, without outer Portion's nylon protective layer.There is the aluminum plastic film of outer layer plastic protective film, the utility model aluminum plastic film is bold in compared with the prior art It is omitted after the plastic protective film for plastics of outside, equally there are the characteristics such as preferable mechanical strength, water vapor barrier property and electrolyte resistance, But also there is long-term resistance to extraneous hydrolysis function, and also simplify the combination process of aluminum plastic film and save production technology cost And the cost of raw material.

Hot sealing layer 3（CPP）Thickness is preferably 30-50 microns, and entire 1 thickness of clad aluminum layers of foil 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 entire aluminium foil layer 1. When being used as soft-package battery packaging and battery is immersed in cooling water, which is used as water-touching layer.Same inside thermoplastic Property resin thin film layer 3 and aluminium foil layer 1 between by the common adhesive 5 of aluminum plastic film it is be bonded compound.By aluminum plastic film provided above Manufactured soft-package battery can long period of soaking in coolant liquid, have long-term resistance to cooling corrosion function.

Embodiment 4

The present embodiment and the structure of embodiment 3 are substantially similar, and core layer also uses 3003 aluminium alloys, the difference is that skin Material 6 is by metallic zinc（Zn）It is aluminium foil layer that layer, which replaces 7, and metal zinc coating thickness can be preferably 10-20 microns, can be by spraying zinc technology It is formed.The current potential of the metallic zinc is lower than the current potential of aluminium alloy core material, therefore can be used as anode loss protection core material and be not corroded.And Metallic zinc can also be effectively prevented aluminium alloy core material spot corrosion.

Embodiment 5

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 includes the aluminum plastic film of electrode material and polymer dielectric and external package, wherein soft-package battery, which uses, includes The aluminum plastic film of the composite layer aluminium foil of sacrificial anode function wraps up, such as the composite layer Aluminum alloy foil in embodiment 1 or 3, i.e. aluminium foil Using being compounded with 7072 aluminium alloy skin materials outside 3003 aluminium alloy core materials.Soft-package battery is impregnated rotten using the above resistance to anti-freeze cooling liquid After the laminated aluminum film of erosion, which can be immersed in anti-freeze cooling liquid, so as to direct and antifreeze cooling Liquid carries out heat exchange.As shown in figure 3, the ontology of soft-package battery 11 soaks after soft-package battery 11 is sealed by top margin 112 and mainboard 13 Bubble is in anti-freeze cooling liquid.The heat transfer effect of battery in this way is more preferable, the more uniform temperature of battery up and down everywhere.

Embodiment 6

The present embodiment uses plastic-aluminum membrane structure similar to Example 1, the difference is that the bonding of bonding nylon protective layer Agent, which uses, is convenient for isolated mould release.I.e. nylon protective layer is similar to release film.In this way, in aluminum plastic film deep-draw forming process, Nylon layer can protect aluminium foil layer；After the completion of deep-draw molding, nylon layer can be separated easily with aluminium foil layer, to form class Like the aluminum plastic film in embodiment 3.

Embodiment 7

The aluminum plastic film that the present embodiment is introduced is by thermoplastic resin membrane（That is hot sealing layer, such as polypropylene）With 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 skin material 6 is by the basis of fine aluminium 1050 The aluminium alloy of addition 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 material, For skin material as anode loss protection core material, skin material recombination rate is preferably 10 ± 2%.The condition of heat treatment of Al-alloy aluminium foil layer For annealed condition（O state）, thickness is preferably 100-300 microns, more preferably 100-200 microns.Compared to traditional composite layer Aluminium alloy, the utility model is above-mentioned not only to have had excellent resistance to cooling corrosion performance as the clad aluminum layers of foil of core material using fine aluminium, but also With good ductility and deep drawability.

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 5 millimeters, it is more highly preferred to be greater than 10 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 millis Grams per liter, iron ion (Fe³⁺):30 ± 0.1 mg/litres, copper ion (Cu²⁺):1 ± 0.01 mg/litre.OY aqueous solution PH is about 3（In the case where not specified, aqueous solution pH value is each about 3 in OY test described in the utility model）.

OY aqueous temperature：It 88 °C, is stirred 8 hours with the speed of 0.6-0.9 m/s (200rpm), it is small to be then allowed to stand 16 When；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.Experiment display, the utility model embodiment aluminium foil corrosion fatigue life are greater than 1000 hours.

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, such as aluminum plastic film of service life of the selection on real vehicle greater than 5 years, and preferably greater than 10 years, more Preferably greater than 15 years.

Embodiment 8

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 liquid（Such as the coolant liquid being mainly made of ethylene glycol and water）In soft-package battery.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 For by the packaging material of any of the above-described kind of anti-cooling corrosion（Such as the aluminum plastic film of the cooling corrosion of water resistant base）It is formed.The thermal control Device further includes partition 12, which is preferably stagger arrangement saw tooth fin partition shown in Fig. 8 or plain fin as shown in Figure 9 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（It 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.

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 out（That is positive and negative electrode tab 111）It 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（It is not shown in the figure）.

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, partition 12 corrosion 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 material AA1050/AA1050+5%Zn aluminium alloy, partition 12 select AA1050+7%Zn.Partition can also play anodic protection in this way, Battery corrosion is further prevented to fail.

Embodiment 9

The core material and skin material of composite layer aluminium alloy can select from such as the following table 2 option 1 into option 4 any：

Table 2

Using the method for embodiment 7, the present embodiment aluminium foil corrosion fatigue life is greater than 1000 hours, even greater than 1500 or 2000 hours.

Embodiment 10

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, first layer skin material adds the aluminium alloy of 2% Zn, second layer skin material to be AA1050 on the basis of being AA1050 on the basis of Add the aluminium alloy of 4% Zn.So corrosion potential is：Core material>First layer skin material>Second layer skin material.It can further ensure in this way Corrosion is the banded corrosion successively corroded, to further avoid pit corrosion, ensures cell safety.

Embodiment 11

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：It is 40% anti-icing fluid and 60%ASTM solution composition by volume ratio.Wherein anti-icing fluid model 45% Ethylene glycol antifreeze, solidification point be subzero 30 degrees Celsius；ASTM solution be by 1 liter of distilled water and 148 milligrams of sodium sulphate, 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 0.5 m/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 value for not allowing to occur ± 1 or more during test 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, be alsoIt is 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 utility model soft-package battery outer packing aluminum plastic film is preferably by aluminium foil With the aluminum plastic film that is compounded to form of thermoplastic resin membrane for being located at aluminium foil inside, the outside of aluminium foil is without other plastic layers, therefore aluminium foil It is directly contacted with anti-icing fluid at the beginning.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 shape for being compound in the thermoplastic resin membrane of aluminium foil inside and being compound on the outside of aluminium foil At aluminum plastic film.Due to common heat-resistant resin film（Such as PA or PET）It is easy to be swollen by anti-icing fluid and remove, therefore in order to unite One testing standard is first removed the heat-resistant resin film outside aluminum plastic film, then again before carrying out above-mentioned corrosion fatigue life test Carry out above-mentioned corrosion test test.

For the ease of briefly stating, the utility model is by the corrosion resistance of above-mentioned soft-package battery outer packing aluminum plastic film aluminium foil Test be defined as "The resistance to anti-icing fluid corrosion life test of specific soft-package battery" or "The resistance to anti-icing fluid of ZPC soft-package battery is rotten Lose 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；It is further small for preferably greater than 2000 When 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）, check pitting penetration everywhere, 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%；Further Preferably less than 5%.In other words, maximum pit depth is the 20% ~ 50% of aluminium foil original thickness value, or is greater than 10% and to be less than 20%, or for greater than 0% and less than 10%.

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：The 1 of single layer is aluminium Alloy（Fine aluminium）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：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 that AA7072 is compounded to form（That is 120 microns of composite layer aluminium alloy overall thickness）, both the above aluminium foil is selected 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 12

The present embodiment is described below aluminum plastic film, and aluminium foil is compounded to form by core material and outside skin material, and wherein core material is 100 micro- 8 line aluminium alloys of -300 microns of rice（Such as 8079 or 8021）It is formed, outside skin material is by adding 2%-6% matter on the basis of 8 line aluminium alloys The Zn-ef ficiency of amount percentage is formed（It is described in table 3 below）, recombination rate preferably takes 10%-20%.Aluminium containing this Al-alloy Plastic film, corrosion resistance and deep drawing quality are all relatively good, are tested according to 7 method of embodiment, and corrosion fatigue life is greater than 1300 hours.

Table 3

Element

Silicon

Iron

Copper

Zinc

Aluminium

Other

Mass percent %

0.05-0.30

0.70-1.3

≤0.05

2.0-6.0

Surplus

≤0.15

Embodiment 13

The present embodiment is described below aluminum plastic film, and aluminium foil is compounded to form by core material and outside skin material, and wherein core material is 100 micro- 1 line aluminium alloy of -300 microns of rice（Such as 1050）It is formed, outside skin material is by adding 2%-6% mass percentage on the basis of 1 line aluminium alloy The Zn-ef ficiency of ratio is formed（As described in Table 4）, recombination rate takes 10%-20%.

Embodiment 14

Wherein 1 line aluminium alloy that core material is 100 microns -300 microns（Such as 1050）It is formed, outside skin material is by 1 line aluminium alloy On the basis of add 2%-6% mass percent Zn-ef ficiency formed（Aluminium alloy as shown in table 4）.Aluminium containing this Al-alloy Plastic film has the function of good electrolyte resistance corrosion and good resistance to cooling water corrosion function；It is surveyed according to 7 method of embodiment Examination, corrosion fatigue life are greater than 1800 hours.

Table 4

Alloying element

Silicon Si

Iron Fe

Copper Cu

Manganese Mn

Magnesium Mg

Zinc Zn

Vanadium V

Titanium Ti

Aluminium Al

It is other

Mass percent %

≤0.25

≤0.40

≤0.05

2.0-6.0

≤0.05

≤ 0.03

Surplus

≤ 0.03

Embodiment 15

A kind of aluminum plastic film is provided, the aluminum plastic film includes aluminium foil layer and the plastic layer for being compound in aluminium foil layer surface, wherein aluminium Layers of foil material is 3003 aluminium alloys.

Referring to Fig. 6, aluminum plastic film ecto-entad is successively made of outer protective layer 2, aluminium foil layer 1 and internal layer hot sealing layer 3, outside Layer protective layer 2 uses nylon（ON）, internal layer hot sealing layer 3 use cast polypropylene film（CPP）, the internal layer hot sealing layer 3 is simultaneously Insulating effect is played, being electrically insulated between aluminium foil layer 1 and internal electrolyte is kept.Outer protective layer 2, internal layer hot sealing layer 3 and aluminium Pass through adhesive respectively between layers of foil 1（Or solid）4,5 bondings are compound.Wherein outer protective layer 2 is used for during deep-draw Protect the effect of aluminium foil layer 1.Adhesive phase is made of any one of following resin, these resins are polyester-urethanes Resin, polyethers-urethane resin, isocyanate resin and unsaturated carboxylic acid graft polyolefin resin.

More than, aluminium foil layer 1 can also be used other rustproof aluminum alloys and be substituted, such as 5 be rustproof aluminum alloy or other 3 be rustproof aluminum alloy, more Specifically such as：3004,3005,3105,5052,5086 etc.；Aluminium foil layer 1 can also be substituted using 6 line aluminium alloys, and such as 6063 Deng.Certainly, aluminium foil layer is also possible to fine aluminium, and fine aluminium is 1050 aluminium alloys perhaps 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 liquid, and have long-term resistance to cooling corrosion function Can, wherein coolant liquid is preferably the water base coolant liquid containing ethylene glycol or/and propylene glycol.During forming soft-package battery, Need to carry out deep-draw technique, outer protective layer 2 provides the protective effect to aluminium foil layer 1 in this deep-draw technique.Soft-package battery leaching Bubble is in coolant liquid after a period of time, and nylon layer 2 may be swollen dissolution removing, but this will not influence the insulation of aluminum plastic film Property, leakproofness and long-term resistance to cooling corrosion.Since the aluminum plastic film of the soft-package battery has long-term resistance to cooling corrosion function, Therefore soft-package battery can be immersed directly in coolant liquid and be cooled down.Bring beneficial effect is that the heat exchange of soft-package battery is imitated in this way Rate is high, will not overheat in high current acting, the power density and reliability of entire battery system can be improved in this way.

Compared to 8 line aluminium alloys, the rustproof aluminum alloy of 3 systems or 5 systems has better resistance to anti-icing fluid corrosive nature, corrosion resistance longevity It orders longer more reliable.

Embodiment 16

The present embodiment introduction uses the Soft Roll polymer Li-ion battery of the package of aluminum plastic film described in embodiment 15, this Embodiment is roughly the same with embodiment 5, the difference is that the aluminium foil in the aluminum plastic film for packing soft-package battery is by single layer aluminium Alloy is formed, which is formed by antirust aluminium foil, is such as formed using 3003 aluminium foils.

Embodiment 17

The present embodiment introduction uses the Soft Roll polymer Li-ion battery of the package of aluminum plastic film described in embodiment 15, this Embodiment is roughly the same with embodiment 5, the difference is that the aluminium foil in the aluminum plastic film for packing soft-package battery is by single layer aluminium Alloy is formed, which is formed by 1 line aluminium alloy foil, is such as formed using 1050 Aluminum alloy foil of O state or other fine aluminiums.

Embodiment 18

The present embodiment is described below aluminum plastic film, and aluminium foil is compounded to form by core material and outside skin material, and wherein core material is 150 micro- 8 line aluminium alloys of -300 microns of rice（Such as 8079 or 8021）It is formed, outside skin material is 7 line aluminium alloys（Such as 7072）Or aluminium zinc-aluminium closes Gold, recombination rate take 2%-20% or 20%-50%.Further, 8 systems with 7 be it is compound after heated or made annealing treatment again, so as to Zn element suitably diffuses to form echelon potential change.Aluminum plastic film containing this Al-alloy, corrosion resistance and deep drawing quality It is all relatively good, it is tested according to 7 method of embodiment, corrosion fatigue life is greater than 1500 hours.

Embodiment 19

The present embodiment is described below aluminum plastic film, and the aluminum plastic film is from inside to outside by thermoplastic film（Such as CPP）, aluminium foil layer and spy Fluorine dragon film is bonded.Since Teflon film has good water-fast corrosion resistance, so soft as made from the aluminum plastic film Packet battery can be with long period of soaking in water or anti-icing fluid.

Embodiment 20

It can refer to embodiment 7, but the pH of the OY aqueous solution of the present embodiment selection is about 11.The present embodiment is water-soluble in addition to OY The pH value of liquid is different from except embodiment 7, remaining condition is same as Example 7.The present embodiment selects corrosion fatigue life to be greater than 1000 hours aluminium foils are used for the aluminum plastic film of battery packaging material.

Embodiment 21

The present embodiment is 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）Corrosion resistance comparative test is carried out 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：

As shown in Figure 7, anti-icing fluid system OY test 4 weeks after, left figure show AA1050 single layer aluminium alloy have occurred compared with For apparent spot corrosion, spot corrosion is more serious；And apparent spot corrosion does not occur for the aluminum alloy surface that right figure show compound sacrificial layer. It follows that the hair of spot corrosion can be effectively inhibited by the skin material more negative in aluminium alloy core material surface recombination corrosion potential It is raw.After the aluminum plastic film inner surface plastic layer heat-sealing formed by above-mentioned composite layer aluminium foil, the time of the resistance to cooling water corrosion of aluminium foil can Meet automotive needs；Simultaneously because aluminium foil inside core material is fine aluminium, electrolyte-resistant corrosive power is also superior to traditional ferro-aluminum Aluminium alloy, to ensure service life and the safe handling of battery.

Embodiment 22

The present embodiment provides a kind of soft-package battery heat control devices comprising the fin of soft-package battery, metal material（Such as saw Tooth fin）With 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 alloy（Such as AA8021 or AA8079）, aluminium foil The skin material of layer is aluminium allumen（Such as AA7072）Or the skin material of aluminium foil layer is aluminium by 1 line aluminium alloy or 3 line aluminium alloys or 8 The Zn-ef ficiency that 1%-10% mass percent is added on the basis of alloy is formed or the skin material of aluminium foil layer is containing 1%-10% mass hundred Divide the aluminium alloy of the Zn-ef ficiency of ratio.Aluminium foil in above-mentioned aluminum plastic film not only has barrier steam effect, and has long-term hydrolysis Corrosion resistant effect, and with higher mechanical strength without the protection of outside nylon layer, also there is good mouldability It is acted on packaging.

Cooling is impregnated compared to the insulating oil as described in CN202550023U, it is cooling as immersion type using anti-icing fluid or water The heat-sinking capability of the battery cooling system of medium can be obviously improved.In same cooling system, its heat-sinking capability be can be improved 15 ~ 20 times, the ability for being embodied in battery tolerance coolant temperature further promotes 5 ~ 10 degrees Celsius, between battery cell The temperature difference is further reduced to 1.0 ~ 2.0 degrees Celsius.Under current battery heat management bottleneck problem still situation very outstanding, this Kind of technical effect is exactly that this field is expected very much, and above-mentioned heat dissipation effect is indirect type water cooling or immersion type is oily cold is not achieved 's.

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

1. a kind of efficient soft-package battery heat control device comprising soft-package battery and fin；

The fin uses metal material or plastic material, at least partly surface and the soft-package battery at least portion of the fin Exceptionally surface directly contacts, and fluid channel is equipped in fin；Several soft-package batteries form a battery unit, battery list Member is arranged with fin interval, the fin support soft-package battery and tissue flow field；When the soft-package battery heat control device have it is water base When coolant liquid, water base coolant liquid flows in the fluid passage, water base coolant liquid and soft-package battery direct contact heat transfer；

The soft-package battery uses laminated aluminum film, and the aluminum plastic film is by being located at the thermoplastic resin membrane of inside and being located at outside Aluminium foil layer be compounded to form；When the soft-package battery heat control device has water base coolant liquid, the aluminium foil layer 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, and the core material of aluminium foil layer is 1 line aluminium alloy or 8 The skin material of line aluminium alloy, aluminium foil layer is selected from 7 line aluminium alloys for the skin material of aluminium allumen or aluminium foil layer.

2. a kind of efficient soft-package battery heat control device comprising soft-package battery and fin；

The soft-package battery uses laminated aluminum film, and the aluminum plastic film has to be made of inside heat sealing layer, outside aluminium foil layer Laminated body, wherein outside aluminium foil layer be the composite layer aluminium foil with galvanic anode protection protective function formed, which does not contain Outside plastic protective layer；When the soft-package battery heat control device has water base coolant liquid, the aluminium foil layer and water base coolant liquid are straight Connect contact heat-exchanging.

3. a kind of efficient soft-package battery heat control device comprising soft-package battery and fin；

At least partly surface of the fin is directly contacted with the soft-package battery at least partly outer surface, and is equipped in fin Fluid channel；Several soft-package batteries form a battery unit, and battery unit and fin interval are arranged, and the fin support is soft Packet battery and tissue flow field；When the soft-package battery heat control device has water base coolant liquid, water base coolant liquid is in the fluid passage Flowing, water base coolant liquid and soft-package battery direct contact heat transfer；

Wherein, the aluminium foil layer includes core material and the skin material on the outside of core material, and the core material of aluminium foil layer is fine aluminium or ferro-aluminum aluminium Alloy, the skin material of aluminium foil layer are aluminium allumen.

4. the efficient soft-package battery heat control device as described in claims 1 or 2 or 3, which is characterized in that the aluminum plastic film is by institute It is sealed around to state battery core, only battery electrode or electrode connecting end mouth are stretched out from the aluminum plastic film；Battery heat control device It further include mainboard, the mainboard is equipped with socket, and the part that the battery is stretched out out of aluminum plastic film is inserted by the socket On mainboard.

5. the efficient soft-package battery heat control device as described in claims 1 or 2 or 3, which is characterized in that the battery thermal control Device further includes outer housing, and accommodating chamber is equipped with inside the outer housing, and the battery unit and partition are placed in the shell In the accommodating chamber of body, the outer housing further includes fluid inlet and fluid outlet.

6. the efficient soft-package battery heat control device as described in claims 1 or 2 or 3, which is characterized in that the aluminum plastic film is by institute It is sealed around to state battery core, only battery electrode or electrode connecting end mouth are stretched out from the aluminum plastic film；Battery heat control device It further include mainboard, the mainboard is equipped with socket, and the part that the battery is stretched out out of aluminum plastic film is inserted by the socket On mainboard；

The battery heat control device further includes outer housing, is equipped with accommodating chamber inside the outer housing, the battery unit with Partition is placed in the accommodating chamber of the outer housing, and the outer housing further includes fluid inlet and fluid outlet；

The mainboard is located in the accommodating chamber of the outer housing, and the accommodating chamber is separated as two parts, first Part accommodates cell body and partition, and second part accommodates the electrode stretched out from the aluminum plastic film and/or electrode connection Port section, physical isolation between the first part and second part.

7. the efficient soft-package battery heat control device as described in claims 1 or 2 or 3 or 4 or 5 or 6, which is characterized in that described Battery heat control device further include water base coolant liquid, and the water base coolant liquid and soft-package battery direct contact heat transfer.

8. the efficient soft-package battery heat control device as described in claims 1 or 2 or 3, which is characterized in that between the fin according to Secondary connection, the connection type are " V " shape, " u "-shaped, trapezoidal, arc or zigzag connection, and can be between adjacent fins It is parallel or shape is at an angle, to form the fluid channel between adjacent fins；Alternatively, the fin can be straight panel Fin, it is Wavelike finned in any one or a few.

9. the efficient soft-package battery heat control device as described in claims 1 or 2 or 3, which is characterized in that the fin is straight Fin or stagger arrangement saw tooth fin.

10. the efficient soft-package battery heat control device as described in claims 1 or 2 or 3, which is characterized in that the heat of the inside Plastic resin film with a thickness of 50-300 microns.

11. the efficient soft-package battery heat control device as described in claims 1 or 2 or 3, which is characterized in that the aluminum plastic film or Its aluminium foil layer has following resistance to cooling corrosion performance：Corrosion-resistant test method is OY aqueous solution (Oyama Water Solution) corrosion test；The corrosion fatigue life in above-mentioned test of the aluminum plastic film or its aluminium foil layer is greater than 500 hours；Into One step, the corrosion fatigue life of the aluminum plastic film or its aluminium foil layer is greater than 1000 hours.