CN204189833U - A kind of high-performance lithium cell aluminum-plastic membrane - Google Patents
A kind of high-performance lithium cell aluminum-plastic membrane Download PDFInfo
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- CN204189833U CN204189833U CN201420729168.1U CN201420729168U CN204189833U CN 204189833 U CN204189833 U CN 204189833U CN 201420729168 U CN201420729168 U CN 201420729168U CN 204189833 U CN204189833 U CN 204189833U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model relates to technical field of lithium batteries, be specifically related to a kind of high-performance lithium cell aluminum-plastic membrane, described aluminum plastic film comprises the refractory layer, aluminium foil layer, corrosion-resistant finishes, tack coat and the hot sealing layer that set gradually from top to bottom, the two sides of aluminium foil layer respectively with refractory layer, corrosion-resistant finishes thermal-adhering, the two sides of tack coat respectively with corrosion-resistant finishes, hot sealing layer thermal-adhering, described refractory layer is polyimide layer.Refractory layer of the present utility model adopts polyimide layer; by liquid heat resistant poly acid imide being directly coated in the complex method that base material aluminium foil is dried; can reach higher outer peeling force, protection aluminum plastic film not by external world, and has certain corrosion-resistant effect.Aluminum plastic film security performance of the present utility model is high, production cost is low, and structure is simple.
Description
Technical field
The utility model relates to technical field of lithium batteries, is specifically related to a kind of high-performance lithium cell aluminum-plastic membrane.
Background technology
Lithium battery aluminum-plastic composite membrane, is generally sandwich construction, and the structure of ecto-entad is followed successively by: protective layer, barrier layer, hot sealing layer.General shaping with different process combining by binding resin between layers.Protective layer need have splendid toughness, resistance to elevated temperatures.Barrier layer plays and intercepts steam, oxygen effect.And existing lithium battery aluminum-plastic composite membrane security performance is poor, and protective layer now substantially be import nylon, production cost is high, constrains the development of domestic lithium battery aluminum plastic film to a certain extent.
Utility model content
In order to overcome the shortcoming and defect existed in prior art, the purpose of this utility model is to provide the high-performance lithium cell aluminum-plastic membrane that a kind of security performance is high, production cost is low.
The purpose of this utility model is achieved through the following technical solutions: a kind of high-performance lithium cell aluminum-plastic membrane, described aluminum plastic film comprises the refractory layer, aluminium foil layer, corrosion-resistant finishes, tack coat and the hot sealing layer that set gradually from top to bottom, the two sides of aluminium foil layer respectively with refractory layer, corrosion-resistant finishes thermal-adhering, the two sides of tack coat respectively with corrosion-resistant finishes, hot sealing layer thermal-adhering, described refractory layer is polyimide layer.
Further, described aluminium foil layer is the soft state aluminium foil of annealed process.
Further, described corrosion-resistant finishes is corrosion-resistant PET film layer.
Further, described tack coat is layer of polyurethane, acrylate layer or epoxy resin layer.
Further, described hot sealing layer is cast polypropylene layer.
Further, the thickness of described refractory layer is 15-25 μm.
Further, the thickness of described aluminium foil layer is 35-45 μm.
Further, the thickness of described corrosion-resistant finishes is 0.5-1.5 μm.
Further, the thickness of described tack coat is 4-6 μm.
Further, the thickness of described hot sealing layer is 35-45 μm.
The beneficial effects of the utility model are: refractory layer of the present utility model adopts polyimide layer; by liquid heat resistant poly acid imide being directly coated in the complex method that base material aluminium foil is dried; higher outer peeling force can be reached; protection aluminum plastic film not by external world, and has certain corrosion-resistant effect.The utility model adopts aluminium foil layer, and aluminium foil is the good conductor of heat, the heat produced can be distributed in time in battery component, the life-span of protection battery, and the structure of aluminium foil densification has splendid water vapor rejection performance.The utility model adopts corrosion-resistant finishes, and improve aluminium foil self resistance to corrosion, finished product lithium battery aluminum-plastic film provides reliable guarantee to lithium battery safety in utilization.The utility model adopts tack coat, makes all to have good resistance to steam breathability before and after adhesive property excellence, humid heat treatment between corrosion-resistant finishes and hot sealing layer.The utility model adopts hot sealing layer, can reduce the percent defective of production line, and effectively can improve the barrier property of packing material entirety.
Aluminum plastic film security performance of the present utility model is high, production cost is low, and structure is simple.
Accompanying drawing explanation
Fig. 1 is cutaway view of the present utility model.
Reference numeral is: 1-refractory layer, 2-aluminium foil layer, 3-corrosion-resistant finishes, 4-tack coat, 5-hot sealing layer.
Embodiment
For the ease of the understanding of those skilled in the art, be further described below in conjunction with embodiment and accompanying drawing 1 pair of the utility model, the content that execution mode is mentioned is not to restriction of the present utility model.
See Fig. 1, a kind of high-performance lithium cell aluminum-plastic membrane, described aluminum plastic film comprises the refractory layer 1, aluminium foil layer 2, corrosion-resistant finishes 3, tack coat 4 and the hot sealing layer 5 that set gradually from top to bottom, the two sides of aluminium foil layer 2 respectively with refractory layer 1, corrosion-resistant finishes 3 thermal-adhering, the two sides of tack coat 4 respectively with corrosion-resistant finishes 3, hot sealing layer 5 thermal-adhering, described refractory layer 1 is polyimide layer.
Refractory layer 1 of the present utility model adopts polyimide layer; by liquid heat resistant poly acid imide being directly coated in the complex method that base material aluminium foil is dried; can reach higher outer peeling force, protection aluminum plastic film not by external world, and has certain corrosion-resistant effect.The utility model adopts aluminium foil layer 2, and aluminium foil is the good conductor of heat, the heat produced can be distributed in time in battery component, the life-span of protection battery, and the structure of aluminium foil densification has splendid water vapor rejection performance.The utility model adopts corrosion-resistant finishes 3, and improve aluminium foil self resistance to corrosion, finished product lithium battery aluminum-plastic film provides reliable guarantee to lithium battery safety in utilization.The utility model adopts tack coat 4, makes all to have good resistance to steam breathability before and after adhesive property excellence, humid heat treatment between corrosion-resistant finishes 3 and hot sealing layer 5.The utility model adopts hot sealing layer 5, can reduce the percent defective of production line, and effectively can improve the barrier property of packing material entirety.
Aluminum plastic film security performance of the present utility model is high, production cost is low, and structure is simple.
In the present embodiment, described aluminium foil layer 2 is the soft state aluminium foil of annealed process.Preferably, described aluminium foil layer 2 is the soft state high-mouldability aluminium foil of annealed process.Aluminium foil layer 2 of the present utility model adopts the soft state aluminium foil of annealed process, the heat produced can be distributed in time in battery component, the life-span of protection battery, and the structure of aluminium foil densification has splendid water vapor rejection performance.
In the present embodiment, described corrosion-resistant finishes 3 is corrosion-resistant PET film layer.Corrosion-resistant finishes 3 of the present utility model adopts corrosion-resistant PET film layer, and improve aluminium foil self resistance to corrosion, finished product lithium battery aluminum-plastic film provides reliable guarantee to lithium battery safety in utilization.
In the present embodiment, described tack coat 4 is layer of polyurethane, acrylate layer or epoxy resin layer.Tack coat 4 of the present utility model adopts layer of polyurethane, acrylate layer or epoxy resin layer, makes all to have good resistance to steam breathability before and after adhesive property excellence, humid heat treatment between corrosion-resistant finishes 3 and hot sealing layer 5.
In the present embodiment, described hot sealing layer 5 is cast polypropylene layer.Hot sealing layer 5 of the present utility model adopts cast polypropylene layer, can reduce the percent defective of production line, and effectively can improve the barrier property of packing material entirety.
In the present embodiment, the thickness of described refractory layer 1 is 15-25 μm.The utility model by by the THICKNESS CONTROL of refractory layer 1 at 15-25 μm, the thermal endurance of backboard can be improved.For making the utility model reach best result of use, the thickness of described refractory layer 1 is 20 μm.
In the present embodiment, the thickness of described aluminium foil layer 2 is 35-45 μm.The utility model by by the THICKNESS CONTROL of aluminium foil layer 2 at 35-45 μm, the radiating effect of backboard can be improved.For making the utility model reach best result of use, the thickness of described aluminium foil layer 2 is 40 μm.
In the present embodiment, the thickness of described corrosion-resistant finishes 3 is 0.5-1.5 μm.The utility model by by the THICKNESS CONTROL of corrosion-resistant finishes 3 at 0.5-1.5 μm, the corrosion resistance of backboard can be improved.For making the utility model reach best result of use, the thickness of described corrosion-resistant finishes 3 is 1 μm.
In the present embodiment, the thickness of described tack coat 4 is 4-6 μm.The utility model by by the THICKNESS CONTROL of tack coat 4 at 4-6 μm, the intensity of backboard can be improved.For making the utility model reach best result of use, the thickness of described tack coat 4 is 5 μm.
In the present embodiment, the thickness of described hot sealing layer 5 is 35-45 μm.The utility model by by the THICKNESS CONTROL of hot sealing layer 5 at 35-45 μm, the barrier property of backboard can be improved.For making the utility model reach best result of use, the thickness of described hot sealing layer 5 is 40 μm.
By aluminum plastic film of the present utility model three mouthfuls envelope, put into the electrolyte of equivalent, make sample sack, placing one week at 80 DEG C of temperature, there is not lamination in aluminum plastic film internal layer.
Aluminum plastic film of the present utility model not only has more reliable heat seal quality and ensures and excellent electrolyte resistance performance also have the inaccessiable 8mm difficulty of domestic like product cold punching moldeed depth degree, can reduce terminal client packaging and storage process loss.
Above-described embodiment is the utility model preferably implementation, and in addition, the utility model can also realize by alternate manner, and any apparent replacement is all within protection range of the present utility model without departing from the concept of the premise utility.
Claims (10)
1. a high-performance lithium cell aluminum-plastic membrane, it is characterized in that: described aluminum plastic film comprises the refractory layer, aluminium foil layer, corrosion-resistant finishes, tack coat and the hot sealing layer that set gradually from top to bottom, fit with refractory layer, corrosion-resistant finishes respectively in the two sides of aluminium foil layer, fit with corrosion-resistant finishes, hot sealing layer respectively in the two sides of tack coat, described refractory layer is polyimide layer.
2. a kind of high-performance lithium cell aluminum-plastic membrane according to claim 1, is characterized in that: described aluminium foil layer is the soft state aluminium foil of annealed process.
3. a kind of high-performance lithium cell aluminum-plastic membrane according to claim 1, is characterized in that: described corrosion-resistant finishes is corrosion-resistant PET film layer.
4. a kind of high-performance lithium cell aluminum-plastic membrane according to claim 1, is characterized in that: described tack coat is layer of polyurethane, acrylate layer or epoxy resin layer.
5. a kind of high-performance lithium cell aluminum-plastic membrane according to claim 1, is characterized in that: described hot sealing layer is cast polypropylene layer.
6. a kind of high-performance lithium cell aluminum-plastic membrane according to claim 1, is characterized in that: the thickness of described refractory layer is 15-25 μm.
7. a kind of high-performance lithium cell aluminum-plastic membrane according to claim 1, is characterized in that: the thickness of described aluminium foil layer is 35-45 μm.
8. a kind of high-performance lithium cell aluminum-plastic membrane according to claim 1, is characterized in that: the thickness of described corrosion-resistant finishes is 0.5-1.5 μm.
9. a kind of high-performance lithium cell aluminum-plastic membrane according to claim 1, is characterized in that: the thickness of described tack coat is 4-6 μm.
10. a kind of high-performance lithium cell aluminum-plastic membrane according to claim 1, is characterized in that: the thickness of described hot sealing layer is 35-45 μm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420729168.1U CN204189833U (en) | 2014-11-28 | 2014-11-28 | A kind of high-performance lithium cell aluminum-plastic membrane |
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| CN201420729168.1U CN204189833U (en) | 2014-11-28 | 2014-11-28 | A kind of high-performance lithium cell aluminum-plastic membrane |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108000986A (en) * | 2017-12-08 | 2018-05-08 | 苏州爱康薄膜新材料有限公司 | A kind of corrosion-resisting lithium battery encapsulation aluminum plastic film |
| CN108735921A (en) * | 2018-03-27 | 2018-11-02 | 江苏共巨锂电材料有限公司 | Antipollution polymer lithium ion power cell aluminum-plastic composite membrane and preparation method thereof |
| CN109367155A (en) * | 2018-10-18 | 2019-02-22 | 常州斯威克光伏新材料有限公司 | A kind of dynamic lithium battery aluminum plastic film and preparation method thereof |
| CN109897565A (en) * | 2018-12-19 | 2019-06-18 | 上海奥威科技开发有限公司 | The anti-battery aluminum plastic film for crossing envelope |
-
2014
- 2014-11-28 CN CN201420729168.1U patent/CN204189833U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108000986A (en) * | 2017-12-08 | 2018-05-08 | 苏州爱康薄膜新材料有限公司 | A kind of corrosion-resisting lithium battery encapsulation aluminum plastic film |
| CN108735921A (en) * | 2018-03-27 | 2018-11-02 | 江苏共巨锂电材料有限公司 | Antipollution polymer lithium ion power cell aluminum-plastic composite membrane and preparation method thereof |
| CN109367155A (en) * | 2018-10-18 | 2019-02-22 | 常州斯威克光伏新材料有限公司 | A kind of dynamic lithium battery aluminum plastic film and preparation method thereof |
| CN109897565A (en) * | 2018-12-19 | 2019-06-18 | 上海奥威科技开发有限公司 | The anti-battery aluminum plastic film for crossing envelope |
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