CN204558555U - A kind of lithium battery flexible packaging elasticity aluminum plastic film - Google Patents
A kind of lithium battery flexible packaging elasticity aluminum plastic film Download PDFInfo
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- CN204558555U CN204558555U CN201520085156.4U CN201520085156U CN204558555U CN 204558555 U CN204558555 U CN 204558555U CN 201520085156 U CN201520085156 U CN 201520085156U CN 204558555 U CN204558555 U CN 204558555U
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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 discloses a kind of lithium battery flexible packaging elasticity aluminum plastic film, described lithium battery aluminum-plastic film has layer structure, comprises PA casting films external protection, adhesive layer, aluminium foil layer, plasma passivation film, a PP leaching membrane layer, CPP film separator, the 2nd PP leaching membrane layer, CPP film hot sealing layer from outside to inside successively; Wherein said plasma passivation film is the alumina layer that described aluminium foil layer is formed in plasma Passivation Treatment, a described PP leaching membrane layer is evenly equipped with engraved structure, and described adhesive layer is a kind of in polyurethane adhesive, epoxyn, acrylic resin adhesive, TPU PUR.The utility model forms plasma passivation film by carrying out plasma Passivation Treatment to aluminium foil in aluminum plastic film, improve the corrosion resistance of lithium battery flexible packaging elasticity aluminum plastic film, and by having added the PP leaching membrane layer with engraved structure, counteract the fragility that the existence due to plasma passivation film causes to improve, inhibit the generation of bubbling phenomenon, make this lithium battery aluminum-plastic film have high security and long life.
Description
Technical field
The utility model relates to a kind of lithium battery manufactured materials, is specifically related to a kind of lithium battery flexible packaging elasticity aluminum plastic film.
Background technology
Up to now, lithium battery is widely used in all kinds of small size digital product with high-energy-density, superior high and low temperature environment adaptive capacity.Its packaging adopted is replaced by soft plastic-aluminum packaging film external packing gradually from the hard box hat of low and middle-end, aluminum hull.Plastic-aluminum packaging film has pliability as the outer packaging bag of lithium battery, can discharge the supercharging that lithium battery in use surprisingly discharges gas generation, prevent battery explosion.This film material usually has the aluminium foil of high water vapor rejection and has excellent in chemical resistance, heat sealability and flexible plastic film and be composited.
Although lithium battery encapsulation plastic-aluminum packaging film has higher chemical resistance, every wet, oxygen barrier, encapsulation cohesive force and can be explosion-proof, but wherein lithium battery encapsulation plastic-aluminum packaging film just easily makes the aluminium foil layer in plastic-aluminum packaging film produce micro-crack once produce bubbling after long-term use, and then causes the leakage of the interior liquid of inner packing even to cause blast.Therefore be necessary that the elasticity improving lithium battery aluminum-plastic film is to suppress the generation of expendable bubbling.Also it is noted that can not with the loss of strength of lithium battery aluminum-plastic film for cost considering that raising aluminum plastic film is flexible while simultaneously.
Utility model content
The purpose of this utility model is to overcome the defect existed in prior art, provides a kind of lithium battery flexible packaging elasticity aluminum plastic film, improves lithium battery aluminum-plastic film and suppresses to produce the ability of bubbling, improves the sealing of plastic-aluminum packaging film.
For achieving the above object, the technical solution of the utility model is a kind of lithium battery flexible packaging elasticity aluminum plastic film of design, described lithium battery aluminum-plastic film has layer structure, comprises PA casting films external protection, adhesive layer, aluminium foil layer, plasma passivation film, a PP leaching membrane layer, CPP film separator, the 2nd PP leaching membrane layer, CPP film hot sealing layer from outside to inside successively; Wherein, described plasma passivation film is the alumina layer that described aluminium foil layer surface is formed through plasma Passivation Treatment, a described PP leaching membrane layer is evenly equipped with engraved structure, and described adhesive layer is a kind of in polyurethane adhesive, epoxyn, acrylic resin adhesive, TPU PUR.
In order to improve the mechanical strength of aluminum plastic film, preferably, the outside of described PA casting films external protection is also bonded with PET casting films external protection.On thickness, the thickness of preferred described PET casting films external protection is 20 ~ 40 microns.
In order to improve the elasticity of lithium battery aluminum-plastic film further, preferably, described engraved structure is the cavernous structure being of a size of 1 ~ 8mm.
In order to improve the elasticity of lithium battery aluminum-plastic film further, preferably, described 2nd PP leaching membrane layer is also evenly equipped with engraved structure.Further preferably, the engraved structure of described 2nd PP leaching membrane layer stagger a described PP leaching membrane layer engraved structure arrangement.
In order to improve the plunger bond strength of lithium battery aluminum-plastic film, preferably, described 2nd PP leaching membrane layer is the compact texture of full coat.
On thickness; preferably; the thickness of described CPP film hot sealing layer is 30 ~ 50 microns; the thickness of first, second PP leaching membrane layer described is respectively 20 ~ 40 microns; the thickness of described CPP film separator is 10 ~ 25 microns, and the thickness of described plasma passivation rete is 1 ~ 3 micron, and the thickness of described aluminium foil layer is 25 ~ 50 microns; the thickness of described PA casting films external protection is 20 ~ 40 microns, and the thickness of each described adhesive layer is 2 ~ 6 microns.
Advantage of the present utility model and beneficial effect are: the utility model forms plasma passivation film by having carried out plasma Passivation Treatment to the aluminium foil in lithium battery flexible packaging elasticity aluminum plastic film, improve the corrosion resistance of lithium battery flexible packaging elasticity aluminum plastic film, and by having added the PP leaching membrane layer with engraved structure in the inner side of plasma passivation film, the fragility counteracting the aluminum plastic film that the existence due to plasma passivation film causes improves, and improve the elasticity of aluminum plastic film, the inner surface generation strain at its engraved structure place when pressure increases in lithium battery aluminum-plastic film inner package, avoid the generation of lithium battery surface blisters, after treating lithium battery cooling, internal drop is low, the strain of inner surface is recovered, therefore this lithium battery aluminum-plastic film is made to have high safety in utilization and long life.
Accompanying drawing explanation
Fig. 1 is the cross section structure schematic diagram of the lithium battery flexible packaging elasticity aluminum plastic film in embodiment 1;
Fig. 2 is the cross section structure schematic diagram of the lithium battery flexible packaging elasticity aluminum plastic film in embodiment 2;
Fig. 3 is the cross section structure schematic diagram of the lithium battery flexible packaging elasticity aluminum plastic film in embodiment 3.
In figure: 1, PA casting films external protection; 2-1, the first adhesive layer; 3, aluminium foil layer; 4, plasma passivation film; 5, a PP leaching membrane layer; 6, CPP film separator; 7, the 2nd PP leaching membrane layer; 8, CPP film hot sealing layer; 9, PET casting films external protection.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is further described.Following examples only for clearly the technical solution of the utility model being described, and can not limit protection range of the present utility model with this.
embodiment 1
The lithium battery flexible packaging elasticity aluminum plastic film that inventor proposes has layer structure; set gradually PA casting films external protection 1, first adhesive layer 2-1, aluminium foil layer 3, plasma passivation film 4, a PP leaching membrane layer 5, CPP film separator the 6, the 2nd PP leaching membrane layer 7, CPP film hot sealing layer 8 from outside to inside, as shown in Figure 1.
Here, aluminium foil layer 3 plays the effect of obstruct and shading, and thickness is selected 25 ~ 50 microns and is advisable.Plasma passivation film 4 is the alumina layer that aluminium foil layer 3 is formed in plasma Passivation Treatment, and thickness is selected 1 ~ 3 micron and is advisable.One PP leaching membrane layer 5 is evenly equipped with engraved structure, when lithium battery aluminum-plastic film inside pressure increases, the inner surface generation strain of the lithium battery at a corresponding PP leaching membrane layer 5 engraved structure place and release pressure, after lithium battery cooling, internal drop is low and recover strain, and therefore aluminum plastic film can not produce bubbling; And can also counteract with a PP leaching membrane layer 5 of engraved structure the fragility raising that in aluminum plastic film, aluminium foil layer 3 passivation causes to a certain extent, its thickness is selected 20 ~ 40 microns and is advisable; In the design of engraved structure, applied by patterned roll printing, select engraved structure to be that the cavernous structure being of a size of 1 ~ 8mm is advisable, excessive then adhesiveness is strong, too small then few to the elasticity raising of aluminum plastic film.The effect that CPP separating film layer 6 plays obstruct the one PP leaching membrane layer 4, avoids the engraved structure of a PP leaching membrane layer 5 to be filled by the 2nd PP leaching membrane layer 7, thickness is selected 10 ~ 25 microns and is advisable.Here the 2nd PP leaching membrane layer 7 is the compact texture of full coat, without engraved structure, plays the effect of effective adhesive CPP film hot sealing layer 8 and CPP film separator 6, and thickness is selected 20 ~ 40 microns and is advisable.
In addition, CPP film hot sealing layer 8 plays the effect of liquid barrier and heat-sealing, and thickness should select 30 ~ 50 microns to be advisable.PA casting films external protection 1 plays the effect that protection lithium battery aluminum-plastic film is damaged from external force scraping, and thickness is selected 20 ~ 40 microns and is advisable.First adhesive layer 2-1 selects in polyurethane adhesive, epoxyn, acrylic resin adhesive, TPU PUR a kind of, and thickness is selected 2 ~ 6 microns and is advisable.
embodiment 2
On the basis of embodiment 1, in order to improve the mechanical strength of lithium battery flexible packaging aluminum plastic film, as what improve, in the present embodiment, the outside of PA casting films external protection 1 is also bonded with the PET casting films external protection 9 that thickness is 20 ~ 40 microns.As shown in Figure 2, lithium battery aluminum-plastic film sets gradually PET casting films external protection 9, first adhesive layer 2-1, PA casting films external protection 1, second adhesive layer 2-2, aluminium foil layer 3, plasma passivation film 4, a PP leaching membrane layer 5, CPP film separator the 6, the 2nd PP leaching membrane layer 7, CPP film hot sealing layer 8 from outside to inside.
embodiment 3
On the basis of embodiment 2, as what improve, in the present embodiment, in order to improve the ability of lithium battery flexible packaging aluminum plastic film opposing bubbling, the 2nd PP leaching membrane layer 7 is also designed to have engraved structure, as shown in Figure 3; Namely, bubbling can not be produced and release pressure when lithium battery aluminum-plastic film inside pressure being increased by the engraved structure of first, second PP leaching membrane layer 5,7, but by the inner surface generation strain of the lithium battery at the engraved structure place of first, second PP leaching membrane layer 5,7 corresponding release pressure, after lithium battery cooling, internal drop is low and recover strain.Preferably the engraved structure of first, second PP leaching membrane layer 5,7 to be staggered design, to improve elasticity and the intensity of aluminum plastic film further.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (8)
1. a lithium battery flexible packaging elasticity aluminum plastic film, it is characterized in that, described lithium battery aluminum-plastic film has layer structure, comprises PA casting films external protection, adhesive layer, aluminium foil layer, plasma passivation film, a PP leaching membrane layer, CPP film separator, the 2nd PP leaching membrane layer, CPP film hot sealing layer from outside to inside successively; Wherein, described plasma passivation film is the alumina layer that described aluminium foil layer surface is formed through plasma Passivation Treatment, a described PP leaching membrane layer is evenly equipped with engraved structure, and described adhesive layer is a kind of in polyurethane adhesive, epoxyn, acrylic resin adhesive, TPU PUR.
2. lithium battery flexible packaging elasticity aluminum plastic film as claimed in claim 1, it is characterized in that, the outside of described PA casting films external protection is also bonded with PET casting films external protection.
3. lithium battery flexible packaging elasticity aluminum plastic film as claimed in claim 2, it is characterized in that, the thickness of described PET casting films external protection is 20 ~ 40 microns.
4. lithium battery flexible packaging elasticity aluminum plastic film as claimed in claim 1, it is characterized in that, described engraved structure is the cavernous structure being of a size of 1 ~ 8mm.
5. lithium battery flexible packaging elasticity aluminum plastic film as claimed in claim 1, it is characterized in that, described 2nd PP leaching membrane layer is also evenly equipped with engraved structure.
6. lithium battery flexible packaging elasticity aluminum plastic film as claimed in claim 5, is characterized in that, the engraved structure of described 2nd PP leaching membrane layer staggers the engraved structure arrangement of a described PP leaching membrane layer.
7. lithium battery flexible packaging elasticity aluminum plastic film as claimed in claim 1, it is characterized in that, described 2nd PP leaching membrane layer is the compact texture of full coat.
8. the elasticity aluminum plastic film of the lithium battery flexible packaging as described in claim 1 to 7 any one; it is characterized in that; the thickness of described CPP film hot sealing layer is 30 ~ 50 microns; the thickness of first, second PP leaching membrane layer described is respectively 20 ~ 40 microns; the thickness of described CPP film separator is 10 ~ 25 microns; the thickness of described plasma passivation rete is 1 ~ 3 micron; the thickness of described aluminium foil layer is 25 ~ 50 microns; the thickness of described PA casting films external protection is 20 ~ 40 microns, and the thickness of each described adhesive layer is 2 ~ 6 microns.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520085156.4U CN204558555U (en) | 2015-02-06 | 2015-02-06 | A kind of lithium battery flexible packaging elasticity aluminum plastic film |
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| CN201520085156.4U CN204558555U (en) | 2015-02-06 | 2015-02-06 | A kind of lithium battery flexible packaging elasticity aluminum plastic film |
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Cited By (2)
| 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 |
| CN108045026A (en) * | 2017-12-08 | 2018-05-18 | 苏州爱康薄膜新材料有限公司 | Fire-retardant lithium battery encapsulation composite membrane of a kind of high water resistant and preparation method thereof |
-
2015
- 2015-02-06 CN CN201520085156.4U patent/CN204558555U/en active Active
Cited By (2)
| 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 |
| CN108045026A (en) * | 2017-12-08 | 2018-05-18 | 苏州爱康薄膜新材料有限公司 | Fire-retardant lithium battery encapsulation composite membrane of a kind of high water resistant and preparation method thereof |
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Address after: 214400, Jiangsu, Wuxi Jiangyin mayor Jing Jing Tong Kong Road, No. 26 Patentee after: JIANGYIN JUNCHI COMPOSITE MATERIAL CO.,LTD. Address before: 214400, Jiangsu, Wuxi Jiangyin mayor Jing Jing Tong Kong Road, No. 26 Patentee before: Jiangyin Junchi Photoelectric Technology Co.,Ltd. |
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Effective date of registration: 20151120 Address after: 214400, Jiangsu, Jiangyin province mayor Jing Jing Tong Kong Road, No. 26 Patentee after: JIANGYIN SUDA HUICHENG COMPOSITE MATERIAL CO.,LTD. Address before: 214400, Jiangsu, Wuxi Jiangyin mayor Jing Jing Tong Kong Road, No. 26 Patentee before: JIANGYIN JUNCHI COMPOSITE MATERIAL CO.,LTD. |
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| CP03 | Change of name, title or address |
Address after: 214400 No. 68-1, Tong'an Road, Qingyang Town, Jiangyin City, Wuxi City, Jiangsu Province Patentee after: JIANGYI SUDA HUICHENG COMPOSITE MATERIAL CO.,LTD. Address before: 214400 No.26 Tonggang Road, Changjing Town, Jiangyin, Jiangsu Province Patentee before: JIANGYIN SUDA HUICHENG COMPOSITE MATERIAL CO.,LTD. |
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