CN204558560U - A kind of large-scale lithium battery plastic-aluminum packaging film including foam films - Google Patents
A kind of large-scale lithium battery plastic-aluminum packaging film including foam films Download PDFInfo
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- CN204558560U CN204558560U CN201520093923.6U CN201520093923U CN204558560U CN 204558560 U CN204558560 U CN 204558560U CN 201520093923 U CN201520093923 U CN 201520093923U CN 204558560 U CN204558560 U CN 204558560U
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- aluminum packaging
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- packaging film
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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
Abstract
The utility model discloses a kind of large-scale lithium battery plastic-aluminum packaging film including foam films; described lithium battery plastic-aluminum packaging film has layer structure, comprises outer protection PET casting films, adhesive layer, outer protection PA casting films, adhesive layer, aluminium foil, adhesive layer, polyethylene low ratio foamed film and CPP heat-sealing film from top to bottom successively.The utility model has added polyethylene low ratio foamed film by the inboard of the aluminium foil in large-scale lithium battery plastic-aluminum packaging film, effectively improve the buffer capacity of plastic-aluminum packaging film, improve plastic-aluminum packaging film to suppress produce the ability of bubbling and bear the ability of external force in the course of processing, and then inhibit because plastic-aluminum packaging film generation bubbling or processing mode reason are to the damaging influence of aluminium foil generation contained in lithium battery plastic-aluminum packaging film, therefore substantially increase safety in utilization and the useful life of lithium battery plastic-aluminum packaging film.
Description
Technical field
The utility model relates to a kind of lithium battery manufactured materials, is specifically related to a kind of large-scale lithium battery plastic-aluminum packaging film including foam films.
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.
In addition, lithium battery encapsulation plastic-aluminum packaging film, when being molded into lithium battery encapsulation outer bag, needs the active force born from the inside to the outside, also easily makes aluminium foil layer in plastic-aluminum packaging film produce folding line, affect the sealing of plastic-aluminum packaging film in this process.
Utility model content
The purpose of this utility model is to overcome the defect existed in prior art, provides a kind of large-scale lithium battery plastic-aluminum packaging film including foam films, improves lithium battery plastic-aluminum packaging 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 large-scale lithium battery plastic-aluminum packaging film including foam films of design; described lithium battery plastic-aluminum packaging film has layer structure, comprises outer protection PET casting films, adhesive layer, outer protection PA casting films, adhesive layer, aluminium foil, adhesive layer, polyethylene low ratio foamed film and CPP heat-sealing film from top to bottom successively.
Here, described adhesive layer can be a kind of in polyurethane adhesive, epoxyn, acrylic resin adhesive.
In order to improve interlayer adhesion, improving the sealing of lithium battery plastic-aluminum packaging film, preferably, being also provided with adhesive layer between described polyethylene low ratio foamed film and described CPP heat-sealing film, being bonded together by adhesive layer.
In order to improve the sealing of lithium battery plastic-aluminum packaging film, further preferably, enhancing film is also provided with between described polyethylene low ratio foamed film and described CPP heat-sealing film.Further preferably, described enhancing film is BOPP film, and the thickness of described enhancing film is 5 ~ 15 microns.
In order to improve interlayer adhesion, improving the sealing of lithium battery plastic-aluminum packaging film, preferably, being also provided with adhesive layer between described polyethylene low ratio foamed film and described enhancing film, being bonded together by adhesive layer.
In order to improve interlayer adhesion, improve the sealing of lithium battery plastic-aluminum packaging film, or preferably, be also respectively equipped with adhesive layer between described polyethylene low ratio foamed film and described enhancing film, between described enhancing film and described CPP heat-sealing film, be bonded together by adhesive layer.
On thickness; preferably; the thickness of described CPP heat-sealing film is 30 ~ 50 microns; the thickness of described polyethylene low ratio foamed film is 5 ~ 30 microns; the thickness of described aluminium foil is 25 ~ 50 microns; the thickness of described outer protection PET casting films is 20 ~ 40 microns, and the thickness of described outer protection PA casting films 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 has added polyethylene low ratio foamed film by the inboard of the aluminium foil in large-scale lithium battery plastic-aluminum packaging film, effectively improve the buffer capacity of plastic-aluminum packaging film, improve plastic-aluminum packaging film to suppress produce the ability of bubbling and bear the ability of external force in the course of processing, and then inhibit because plastic-aluminum packaging film generation bubbling or processing mode reason are to the damaging influence of aluminium foil generation contained in lithium battery plastic-aluminum packaging film, therefore substantially increase safety in utilization and the useful life of lithium battery plastic-aluminum packaging film.
Accompanying drawing explanation
Fig. 1 is the cross section structure schematic diagram of the large-scale lithium battery plastic-aluminum packaging film in embodiment 1;
Fig. 2 is the cross section structure schematic diagram of the large-scale lithium battery plastic-aluminum packaging film in embodiment 2;
Fig. 3 is the cross section structure schematic diagram of the large-scale lithium battery plastic-aluminum packaging film in embodiment 3;
Fig. 4 is the cross section structure schematic diagram of the large-scale lithium battery plastic-aluminum packaging film in embodiment 4.
In figure: 1, outer protection PET casting films; 2-1, the first adhesive layer; 2-2, the second adhesive layer; 2-3, the 3rd adhesive layer; 2-4, the 4th adhesive layer; 2-5, the 5th adhesive layer; 3, outer protection PA casting films; 4, aluminium foil; 5, polyethylene low ratio foamed film; 6, CPP heat-sealing film; 7, BOPP strengthens film.
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 large-scale lithium battery plastic-aluminum packaging film that inventor proposes has layer structure; it from top to bottom sets gradually outer protection PET casting films 1, first adhesive layer 2-1, outer protection PA casting films 3, second adhesive layer 2-2, aluminium foil 4, the 3rd adhesive layer 2-3, polyethylene low ratio foamed film 5 and CPP heat-sealing film 6, as shown in Figure 1.
Here, polyethylene low ratio foamed film 5 is commonly called as pearl paper, is a kind of antidetonation buffering, antistatic, protection against the tide, heat insulation, anti-soda acid, and the material of buffering antidetonation, thickness is 5 ~ 30 microns.Outer protection PET casting films 1 and outer protection PA casting films 3 play protection plastic-aluminum packaging film and avoid because of active forces such as external scrapings and the effect of breakage, and thickness is respectively 20 ~ 40 microns.Aluminium foil 4 plays the effect of obstruct, shading, and thickness is 25 ~ 50 microns.Heat-sealing film 6 is CPP film, and play the effect of heat-sealing and liquid barrier, thickness is 30 ~ 50 microns.First adhesive layer 2-1, the second adhesive layer 2-2, the 3rd adhesive layer 2-3 select in polyurethane adhesive, epoxyn, acrylic resin adhesive a kind of, and play the effect of gluing adjacent two layers, thickness is 2 ~ 6 microns; Here pass through heat bonding between polyethylene low ratio foamed film 5 and CPP heat-sealing film 6, namely particularly heat CPP heat-sealing film 6 by heating polyethylene low ratio foamed film 5 and polyethylene low ratio foamed film 5 and CPP heat-sealing film 6 are bonded together.
Add polyethylene low ratio foamed film 5 by the inboard of the aluminium foil 4 in lithium battery plastic-aluminum packaging film, effectively improve the buffer capacity of plastic-aluminum packaging film, therefore substantially increase safety in utilization and the useful life of lithium battery plastic-aluminum packaging film.
embodiment 2
In embodiment 1, polyethylene low ratio foamed film 5 and CPP heat-sealing film 6 heat bonding.As different from Example 1, in the present embodiment, in order to improve the bonding strength between polyethylene low ratio foamed film 5 and CPP heat-sealing film 6, the 4th adhesive layer 2-4 is also provided with between polyethylene low ratio foamed film 5 and CPP heat-sealing film 6, by the 4th adhesive layer 2-4, polyethylene low ratio foamed film 5 and CPP heat-sealing film 6 are bonded together, as shown in Figure 2.
embodiment 3
In the present embodiment; large-scale lithium battery plastic-aluminum packaging film has layer structure; it from top to bottom sets gradually outer protection PET casting films 1, first adhesive layer 2-1, outer protection PA casting films 3, second adhesive layer 2-2, aluminium foil 4, the 3rd adhesive layer 2-3, polyethylene low ratio foamed film 5, BOPP enhancing film 7 and CPP heat-sealing film 6, as shown in Figure 3.
Here BOPP strengthens the effect that film 7 plays intensity inside raising polyethylene low ratio foamed film 5, reduces the sensitiveness of high density polyethylene low ratio foamed film 5 pairs of external force, thus restrained effectively the generation of the folding line phenomenon of aluminium foil 4, improve the sealing of lithium battery plastic-aluminum packaging film.It is heat bonding that BOPP strengthens between film 7 and CPP heat-sealing film 6, polyethylene low ratio foamed film 5 and BOPP enhancing film 7.All the other each layers of this lithium battery plastic-aluminum packaging film are identical with embodiment 1, repeat no more here.
Note, the thickness of the film 7 of BOPP enhancing is here selected 5 ~ 15 microns and is advisable, and the blocked up shock-absorbing capacity then affecting polyethylene low ratio foamed film 5, crosses thin, does not have to the effect strengthened inside polyethylene low ratio foamed film 5.
embodiment 4
In embodiment 3, BOPP enhancing film 7 and CPP heat-sealing film 6, polyethylene low ratio foamed film 5 and BOPP enhancing film 7 are heat bonding.As different from Example 3, in the present embodiment, in order to improve plunger bond strength, between polyethylene low ratio foamed film 5 and BOPP enhancing film 7, the 4th adhesive layer 2-4 being also set, by the 4th adhesive layer 2-4, polyethylene low ratio foamed film 5 and BOPP being strengthened film 7 and be bonded together; BOPP strengthens film 7 and CPP heat-sealing film 6 and is also provided with the 5th adhesive layer 2-5, by the 5th adhesive layer 2-5 BOPP is strengthened film 7 and CPP heat-sealing film 6 is bonded together, as shown in Figure 4.
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. one kind includes the large-scale lithium battery plastic-aluminum packaging film of foam films; it is characterized in that; described lithium battery plastic-aluminum packaging film has layer structure, comprises outer protection PET casting films, adhesive layer, outer protection PA casting films, adhesive layer, aluminium foil, adhesive layer, polyethylene low ratio foamed film and CPP heat-sealing film from top to bottom successively.
2. include the large-scale lithium battery plastic-aluminum packaging film of foam films as claimed in claim 1, it is characterized in that, described adhesive layer is a kind of in polyurethane adhesive, epoxyn, acrylic resin adhesive.
3. include the large-scale lithium battery plastic-aluminum packaging film of foam films as claimed in claim 1, it is characterized in that, between described polyethylene low ratio foamed film and described CPP heat-sealing film, be also provided with enhancing film.
4. include the large-scale lithium battery plastic-aluminum packaging film of foam films as claimed in claim 3, it is characterized in that, described enhancing film is BOPP film, and the thickness of described enhancing film is 5 ~ 15 microns.
5. include the large-scale lithium battery plastic-aluminum packaging film of foam films as claimed in claim 3, it is characterized in that, be also provided with adhesive layer between described polyethylene low ratio foamed film and described enhancing film, be bonded together by adhesive layer.
6. include the large-scale lithium battery plastic-aluminum packaging film of foam films as claimed in claim 3, it is characterized in that, also be respectively equipped with adhesive layer between described polyethylene low ratio foamed film and described enhancing film, between described enhancing film and described CPP heat-sealing film, be bonded together by adhesive layer.
7. include the large-scale lithium battery plastic-aluminum packaging film of foam films as claimed in claim 1, it is characterized in that, be also provided with adhesive layer between described polyethylene low ratio foamed film and described CPP heat-sealing film, be bonded together by adhesive layer.
8. the large-scale lithium battery plastic-aluminum packaging film including foam films as described in claim 1 to 7 any one; it is characterized in that; the thickness of described CPP heat-sealing film is 30 ~ 50 microns; the thickness of described polyethylene low ratio foamed film is 5 ~ 30 microns; the thickness of described aluminium foil is 25 ~ 50 microns; the thickness of described outer protection PET casting films is 20 ~ 40 microns, and the thickness of described outer protection PA casting films is 20 ~ 40 microns, and the thickness of each described adhesive layer is 2 ~ 6 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520093923.6U CN204558560U (en) | 2015-02-10 | 2015-02-10 | A kind of large-scale lithium battery plastic-aluminum packaging film including foam films |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520093923.6U CN204558560U (en) | 2015-02-10 | 2015-02-10 | A kind of large-scale lithium battery plastic-aluminum packaging film including foam films |
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| CN204558560U true CN204558560U (en) | 2015-08-12 |
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| CN201520093923.6U Active CN204558560U (en) | 2015-02-10 | 2015-02-10 | A kind of large-scale lithium battery plastic-aluminum packaging film including foam films |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
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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| TR01 | Transfer of patent right |
Effective date of registration: 20151112 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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