CN206349409U - Recharging soft-package battery plastic-aluminum membrane structure - Google Patents
Recharging soft-package battery plastic-aluminum membrane structure Download PDFInfo
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- CN206349409U CN206349409U CN201720054733.2U CN201720054733U CN206349409U CN 206349409 U CN206349409 U CN 206349409U CN 201720054733 U CN201720054733 U CN 201720054733U CN 206349409 U CN206349409 U CN 206349409U
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- layers
- insulating barrier
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- recharging
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
Layer of struggling against the corrosive influence is equipped with the utility model discloses a kind of recharging soft-package battery plastic-aluminum membrane structure, including upper and lower surface（2）Aluminium lamination（1）, two layers of struggling against the corrosive influence（2）It is upper to be bonded with external protection respectively（3）And inner insulating layer, the inner insulating layer is including being bonded in aluminium lamination（1）The corrosion layer of downside（2）First insulating barrier of lower surface（4）, and it is bonded in the first insulating barrier（4）Second insulating barrier of lower surface（5）；Wherein the first insulating barrier（4）For one kind in pet layer, PI layers and PBT layers, the second insulating barrier（5）For one kind in CPP layers, PP layers, EAA layers and PE layers.The utility model has higher security performance, and is easy to punch process.
Description
Technical field
The utility model is related to a kind of plastic-aluminum membrane structure, more particularly to a kind of aluminum plastic film for recharging soft-package battery
Structure.
Background technology
It is well known that good aluminum plastic film can be at the building ring of closing during the use of soft-package battery
Border, prevention outside moisture are balanced into battery core internal sabotage cell reaction, its is lost battery performance, so as to play to battery core
Safety protection function.But in actual life, the event of cells burst injury human body but occurs repeatedly, this fuel cell burning
The generation of event, some reason is, because aluminum plastic film insulating properties is low, micro-short circuit corrosion aluminium to be formed between battery core negative pole and aluminium lamination
Layer, causes electro-hydraulic outflow open circuit potential to cause short circuit to cause.And consider that aluminum plastic film needs to be rushed in cell processing course
Pressure, increasing the thickness of the insulating barrier of aluminum plastic film simply will cause its scouring depth ability to decline, and difficulty of processing is greatly increased.Therefore,
A kind of aluminum plastic film with greater security energy is prepared just to be particularly important.Meanwhile, it is secondary since the green energy resource epoch
In rechargeable battery flexible packing lithium ion battery because its safety, life-span it is good, the advantage such as high power discharge ability is strong oneself be gradually applied to
Pure electric vehicle (EV), hybrid electric vehicle (HEV) and plug-in hybrid electric vehicle (PHEV) and safety and reliability are to electronic vapour
The basic demand of Vehicular dynamic battery, thus design prepares a kind of aluminum plastic film with excellent safe performance and just seems particularly urgent
Cut.
Utility model content
The purpose of this utility model is that there is provided a kind of plastic-aluminum membrane structure for recharging soft-package battery.This practicality
It is new that there is higher security performance, and it is easy to punch process.
In order to solve the above technical problems, the technical scheme that the utility model is provided is as follows：A kind of recharging soft-package battery
Plastic-aluminum membrane structure, including upper and lower surface are equipped with the aluminium lamination for layer of struggling against the corrosive influence, two layers of struggling against the corrosive influence and are bonded with external protection respectively
And inner insulating layer, it is characterised in that：The inner insulating layer includes being bonded in the first insulation of the corrosion layer lower surface on the downside of aluminium lamination
Layer, and it is bonded in the second insulating barrier of the first insulating barrier lower surface；Wherein the first insulating barrier is pet layer（Poly terephthalic acid second
Diester）, PI layers（Polyimides）And PBT（PBT）One kind in layer, the second insulating barrier is CPP layers（Curtain coating
Polypropylene）, PP layers（Polypropylene）, EAA layers（Ethylene acrylic）And PE（Polyethylene）One kind in layer.
In above-mentioned recharging soft-package battery plastic-aluminum membrane structure, the thickness ratio of first insulating barrier and the second insulating barrier
Example is 1: 20~1: 2.
In foregoing recharging soft-package battery plastic-aluminum membrane structure, the first insulating barrier and the second insulating barrier distinguish preferred PI and
PP。
In foregoing recharging soft-package battery plastic-aluminum membrane structure, the first insulating barrier and the second thickness of insulating layer ratio are most
Ratio of greater inequality example is 1: 4.
In foregoing recharging soft-package battery plastic-aluminum membrane structure, the external protection is PA layers（Polyamide）Or pet layer.
In foregoing recharging soft-package battery plastic-aluminum membrane structure, the recharging soft-package battery is lithium ion Soft Roll electricity
Pond.Its positive electrode can be using nickel-cobalt-manganese ternary material, nickel cobalt aluminum binary material, lithium manganate material, rich lithium manganese material, cobalt acid lithium
Material or LiFePO4 etc..
Compared with prior art, the utility model on the layer of struggling against the corrosive influence of aluminium lamination by setting two layers of different materials composite junction
The inner insulating layer structure of structure, can make aluminum plastic film integrally have stronger scouring depth ability, be difficult to break through in punch process, rotten
Angle, while not influenceing normal sealing to process, but also can increase high temperature resistant and corrosion resistance, in the use of battery
During, contact, corrosion of the electrolyte to aluminium lamination all can be effectively prevented, isolation, protection are served to the aluminium lamination in aluminum plastic film and is made
With, the formation condition of micro-short circuit inside battery core has been cut off, and then the safety coefficient of battery core is improved, while outlet flexible package can be prevented
The phenomenon for forming damaged or gap in the sealing of battery and edge sealing process and corroding.
Brief description of the drawings
Fig. 1 is cross section structure schematic diagram of the present utility model.
Embodiment
The utility model is further described with reference to embodiment.
Embodiment：Recharging soft-package battery plastic-aluminum membrane structure, struggles against the corrosive influence as shown in figure 1, being equipped with including upper and lower surface
External protection 3 and inner insulating layer are bonded with the aluminium lamination 1 of layer 2, two layers 2 of struggling against the corrosive influence respectively, the inner insulating layer includes bonding
In the first insulating barrier 4 of the lower surface of corrosion layer 2 of the downside of aluminium lamination 1, and it is bonded in the second insulating barrier of the lower surface of the first insulating barrier 4
5；Wherein the first insulating barrier 4 is one kind in pet layer, PI layer and PBT layers, the second insulating barrier 5 for CPP layers, PP layers, EAA layers and
One kind in PE layers.The thickness proportion of the insulating barrier 5 of first insulating barrier 4 and second is 1: 20~1: 2.The He of first insulating barrier 4
Second insulating barrier 5 selects the combination of two kinds of materials of PI and PP to be that effect is optimal respectively.First insulating barrier 4 and the second insulating barrier 5
The best proportion of thickness proportion is 1:4.The external protection 3 is PA layers or pet layer.The recharging soft-package battery be lithium from
Sub- soft-package battery.
Wherein aluminium lamination 1 can aluminum foil material（Soft state pure aluminum foil or aluminium-iron class alloy softwood）, and thickness is 30-80 μm, and it is right
The two-sided carry out silane coupler and titanate coupling agent coating treatment or complex acid salt treatment of aluminium foil form layer 2 of struggling against the corrosive influence.It is anti-corruption
The outside of erosion layer 2 is combined by adhesive 6 with external protection 3 and inner insulating layer.The thickness of external protection 3 is 10-25 μm, and first is exhausted
The thickness of edge layer 4 is 5-40 μm, and the thickness of the second insulating barrier 5 is 20-80 μm.
Operation principle of the present utility model：In aluminum plastic film heat seal process, or during the use of battery, if traditional
The internal layer of aluminum plastic film（Usually PP layers or CPP layers）It is damaged, it is electrochemical corrosion that it, which destroys principle, has been characterized in electric current production
Raw, the electric current in electrochemical corrosion also forms the structure " corruption similar to galvanic cell just because of metal in electrolyte solution
Lose battery " and produce.Generally in the metal of electrochemical corrosion, corrosion cell is minimum, but quantity is extremely more.Metal touches electricity
Electrolyte solution, occurs galvanic effect, and relatively active metallic atom loses electronics and is oxidized, and generates metal ion.It is conventional
PP or CPP layers used in plastic-aluminum film inner layer, PP layers of fusing point are 164~170 DEG C, and CPP layers of fusing point are 150 DEG C of ＜, and in flexible package
Temperature employed in the sealing of battery and edge sealing process is generally >=180~200 DEG C, thus relatively easily causes PP or CPP and coagulates
Knot, forms damaged or gap, reduces insulating properties, occurs corrosion phenomenon.And the utility model is carried out by materials at two layers
Compound, its internal layer fusing point can effectively prevent contact, corrosion of the electrolyte to aluminium lamination more than 200 DEG C.And materials at two layers is compound
Afterwards, overall tensile strength is very high, can be matched in excellence or beauty with aluminium foil, with pet layer and PP layers of compound inner insulating layer（Ratio is 1: 5~1:
2）Intensity, up to 9 times of the HDPE film of same thickness, is more than 3 times of same thickness PC or PA film.Insulation of the present utility model
Inner side creep properties is small, endurance is fabulous, wearability and rub resistance good, and mechanical property be affected by temperature it is smaller, so
The extensibility that its existing resistance to elevated temperatures has had again.As be combined using PI and PP or CPP have in PI strands it is sufficiently stable
There is the incomparable excellent comprehensive performance of other special engineered lubriation materials, it draws under imide aromatic heterocyclic structure, high temperature
Intensity is stretched up to 200MPa, and heat resistance and radiation resistance are good, and PP or CPP can be combined well, temperature is used for a long time in it
Up to more than 300 DEG C.The security performance of battery can be greatly enhanced.
The material selection of two insulating barriers of the present utility model and thickness proportion are the utility model people of the application through excessive
Study in year, test repeatedly, summarizing and obtain, it had both ensured that aluminum plastic film had stronger scouring depth ability, making it be difficult to break through, rotten
Angle, is easy to processing, while not influenceing normal sealing to process, and can improve high temperature resistant and corrosion resistance, so that
The security performance of battery is lifted to greatest extent.
Claims (6)
1. recharging soft-package battery plastic-aluminum membrane structure, including upper and lower surface are equipped with layer of struggling against the corrosive influence（2）Aluminium lamination（1）, two
Struggle against the corrosive influence layer（2）It is upper to be bonded with external protection respectively（3）And inner insulating layer, it is characterised in that：The inner insulating layer includes bonding
In aluminium lamination（1）The corrosion layer of downside（2）First insulating barrier of lower surface（4）, and it is bonded in the first insulating barrier（4）The of lower surface
Two insulating barriers（5）；Wherein the first insulating barrier（4）For one kind in pet layer, PI layers and PBT layers, the second insulating barrier（5）For CPP
One kind in layer, PP layers, EAA layers and PE layers.
2. recharging soft-package battery plastic-aluminum membrane structure according to claim 1, it is characterised in that：First insulating barrier
（4）With the second insulating barrier（5）Thickness proportion be 1: 20~1: 2.
3. recharging soft-package battery plastic-aluminum membrane structure according to claim 1, it is characterised in that：First insulating barrier（4）
With the second insulating barrier（5）Respectively PI layers and PP layers.
4. recharging soft-package battery plastic-aluminum membrane structure according to claim 2, it is characterised in that：First insulating barrier（4）
With the second insulating barrier（5）Thickness is ratio 1: 2.
5. recharging soft-package battery plastic-aluminum membrane structure according to claim 1, it is characterised in that：The external protection
（3）For PA layers or pet layer.
6. recharging soft-package battery plastic-aluminum membrane structure according to claim 1, it is characterised in that：The recharging is soft
Bag battery is lithium ion soft-package battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720054733.2U CN206349409U (en) | 2017-01-18 | 2017-01-18 | Recharging soft-package battery plastic-aluminum membrane structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720054733.2U CN206349409U (en) | 2017-01-18 | 2017-01-18 | Recharging soft-package battery plastic-aluminum membrane structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206349409U true CN206349409U (en) | 2017-07-21 |
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| CN201720054733.2U Active CN206349409U (en) | 2017-01-18 | 2017-01-18 | Recharging soft-package battery plastic-aluminum membrane structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106601936A (en) * | 2017-01-18 | 2017-04-26 | 湖州百成电池有限公司 | Aluminum-plastic film structure for secondary rechargeable soft package battery |
-
2017
- 2017-01-18 CN CN201720054733.2U patent/CN206349409U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106601936A (en) * | 2017-01-18 | 2017-04-26 | 湖州百成电池有限公司 | Aluminum-plastic film structure for secondary rechargeable soft package battery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 313013 No. 8, Jinghang Road, Lianshi Town, Nanxun District, Huzhou City, Zhejiang Province Patentee after: Huzhou travel Nanxun excellent Battery Co. Address before: 313009 No. 8, Jinghang Road, Lianshi Town, Nanxun District, Huzhou City, Zhejiang Province Patentee before: HUZHOU BAICHENG BATTERY CO., LTD. |
|
| CP03 | Change of name, title or address |