CN204558554U - A kind of shock-resistant large-scale lithium battery aluminum-plastic film - Google Patents
A kind of shock-resistant large-scale lithium battery aluminum-plastic film Download PDFInfo
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- CN204558554U CN204558554U CN201520085154.5U CN201520085154U CN204558554U CN 204558554 U CN204558554 U CN 204558554U CN 201520085154 U CN201520085154 U CN 201520085154U CN 204558554 U CN204558554 U CN 204558554U
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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 shock-resistant large-scale lithium battery aluminum-plastic film; described lithium battery aluminum-plastic film has layer structure; comprise outer protection PET casting films, the first adhesive layer, outer protection PA casting films, the second adhesive layer, the first porous buffer film, the 3rd adhesive layer, aluminium foil, the 4th adhesive layer, the second porous buffer film and heat-sealing film from top to bottom successively, first, second porous buffer film wherein said at least comprises the porous microbedding that one deck is distributed with through hole.The utility model has added porous buffer film by the both sides of the aluminium foil in large-scale lithium battery aluminum-plastic film, effectively improve the buffer capacity of aluminum plastic film, improve the ability that aluminum plastic film suppresses to produce bubbling, and then inhibit because aluminum plastic film produces bubbling and damaging influence is produced to aluminium foil wherein.This lithium battery aluminum-plastic film has higher fail safe and longer useful life.
Description
Technical field
The utility model relates to a kind of lithium battery manufactured materials, is specifically related to a kind of shock-resistant large-scale lithium battery 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 aluminum plastic film external packing gradually from the hard box hat of low and middle-end, aluminum hull.Aluminum plastic 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 aluminum-plastic membrane used for packaging lithium battery has higher chemical resistance, every wet, oxygen barrier, encapsulation cohesive force and can be explosion-proof, but wherein aluminum-plastic membrane used for packaging lithium battery just easily makes the aluminium foil layer in aluminum plastic 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.
Utility model content
The purpose of this utility model is to overcome the defect existed in prior art, provides a kind of shock-resistant large-scale lithium battery aluminum-plastic film, improves the ability that lithium battery aluminum-plastic film suppresses to produce bubbling.
For achieving the above object; the technical solution of the utility model is a kind of shock-resistant large-scale lithium battery aluminum-plastic film of design; described lithium battery aluminum-plastic film has layer structure; comprise outer protection PET casting films, the first adhesive layer, outer protection PA casting films, the second adhesive layer, the first porous buffer film, the 3rd adhesive layer, aluminium foil, the 4th adhesive layer, the second porous buffer film and heat-sealing film from top to bottom successively, first, second porous buffer film wherein said at least comprises the porous microbedding that one deck is distributed with through hole.
Preferably, first, second porous buffer film described is CPP film.
Preferably, first, second porous buffer film described is composited by the described porous microbedding of more than at least three layers respectively.
Or preferably, first, second porous buffer film described respectively by two atresias closed microbedding and be clipped between two closed microbeddings described at least one porous microbedding and be composited.
Preferably, the side towards described outer protection PA casting films of described first porous buffer film forms corona layer through corona treatment.
Preferably, the 5th adhesive layer is also provided with between described second porous buffer film and described heat-sealing film.Preferably, the thickness of described 5th adhesive layer is 2 ~ 6 microns.
On thickness, preferably, the thickness of described heat-sealing film is 30 ~ 50 microns, the thickness of described aluminium foil is 25 ~ 50 microns, the thickness of described outer protection PA casting films is 20 ~ 40 microns, the thickness of described outer protection PET casting films is 20 ~ 40 microns, and the thickness of first, second porous buffer film described is respectively 10 ~ 30 microns; The thickness of described first, second, third, fourth adhesive layer is 2 ~ 6 microns.
Advantage of the present utility model and beneficial effect are: the utility model has added porous buffer film by the both sides of the aluminium foil in large-scale lithium battery aluminum-plastic film, effectively improve the buffer capacity of aluminum plastic film, improve the ability that aluminum plastic film suppresses to produce bubbling, and then inhibit because aluminum plastic film produces bubbling and damaging influence is produced to aluminium foil wherein.This large-scale lithium battery aluminum-plastic film has higher fail safe and longer useful life.
Accompanying drawing explanation
Fig. 1 is the cross section structure schematic diagram of the large-scale lithium battery aluminum-plastic film in embodiment 1;
Fig. 2 is the cross section structure schematic diagram of the large-scale lithium battery aluminum-plastic film in embodiment 2;
Fig. 3 is the cross section structure schematic diagram of the large-scale lithium battery aluminum-plastic film in embodiment 3;
Fig. 4 is the cross section structure schematic diagram of the large-scale lithium battery aluminum-plastic film in embodiment 4.
In figure: 1, outer protection PET casting films; 2, the first adhesive layer; 3, outer protection PA casting films; 4, the second adhesive layer; 5, the first porous buffer film; 6, the 3rd adhesive layer; 7, aluminium foil; 8, the 4th adhesive layer; 9, the second porous buffer film; 10, heat-sealing film; 11, the 5th adhesive layer; 51, porous microbedding; 52, microbedding is closed; 53, corona layer.
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 aluminum-plastic film that inventor proposes has layer structure, and it from top to bottom comprises outer protection PET casting films 1, first adhesive layer 2, outer protection PA casting films 3, second adhesive layer 4, first porous buffer film 5, the 3rd adhesive layer 6, aluminium foil 7, the 4th adhesive layer 8, second porous buffer film 9 and heat-sealing film 10 successively.This inside and outside protect PET casting films 1 and outer protection PA casting films 3 play protection aluminum plastic film avoid because of active forces such as external scrapings and the effect of breakage; Heat-sealing film 10 is CPP membrane material, plays the effect of heat-sealing and liquid barrier; First porous buffer film 5 and the second porous buffer film 9 play and strengthen the toughness of aluminum plastic film and the effect of shock-absorbing capacity.
For functionally realizing cushioning effect, design the porous microbedding being at least distributed with through hole in the first porous buffer film 5 and the second porous buffer film 9 all respectively containing one deck.Introduce the structure of porous buffer film for the first porous buffer film 5, the structure of the second porous buffer film 9 is identical with it, repeats no more.
As shown in Figure 1, the first porous buffer film 5 has three porous microbeddings 51, overlappingly between each porous microbedding 51 forms.On hole type design, for improving the resistance to tearing of the first porous buffer film 5 so that the smooth processing of porous buffer film 5 and follow-up compound, preferred pass is circular.In addition, the through hole preferably folded array on each porous microbedding 51, to realize the first porous buffer film 5 preferably buffering effect and preferably mechanical property.Here, the number of plies of porous microbedding 51 can suitably increase according to required buffering effect and reduce.Consider from processing and effect angle, preferably design at 2-5 porous microbedding 51.
When the material of selection first buffer film 5 and the second porous buffer film 9, consider that it preferably has highly corrosion resistant, and be easy to compound, select the first buffer film 5 and the second porous buffer film 9 to be CPP material for this reason, thus make to be combined with each other by heat-sealing between each porous microbedding.
On thickness, the thickness selecting heat-sealing film 10 is 30 ~ 50 microns, the thickness of aluminium foil 7 is 25 ~ 50 microns, the thickness of outer protection PA casting films 3 is 20 ~ 40 microns, the thickness of outer protection PET casting films 1 is 20 ~ 40 microns, the thickness of the first porous buffer film 5 is 10 ~ 30 microns, and the thickness of the second porous buffer film 9 is 10 ~ 30 microns; The thickness of the first adhesive layer 2, second adhesive layer 4, the 3rd adhesive layer 6 and the 4th adhesive layer 8 is respectively 2 ~ 6 microns.The thickness of comparative optimization is, the thickness selecting heat-sealing film 10 is 40 microns, the thickness of aluminium foil 7 is 40 microns, the thickness of outer protection PA casting films 3 is 25 microns, the thickness of outer protection PET casting films 1 is 25 microns, the thickness of the first porous buffer film 5 is 21 microns, and the thickness of the second porous buffer film 9 is 21 microns; The thickness of the first adhesive layer 2, second adhesive layer 4, the 3rd adhesive layer 6 and the 4th adhesive layer 8 is respectively 4 microns.
embodiment 2
In embodiment 1, the first porous buffer film 5 both sides arrange adhesive, form adhesive layer respectively and between aluminium foil 5 and outer diaphragm 1; But adhesive can enter in the hole of the first porous buffer film 5, affect the buffering effect of the first porous buffer film 5, and then affect resistance to impact and the explosion-proof of lithium battery aluminum-plastic film.
In addition, the side of the second porous buffer film 9 also arranges adhesive, to realize the bonding of the second porous buffer film 9 and aluminium foil 5; There is the problem that hole that adhesive enters the second porous buffer film 9 affects its buffering effect equally.
For this reason, as different from Example 1, in the present embodiment, in order to improve explosion-proof and the resistance to impact of lithium battery aluminum-plastic film, the structure of the first porous buffer film 5 in lithium battery aluminum-plastic film and the second porous buffer film 9 is improved.Respectively by the first porous buffer film 5 and the second porous buffer film 9 be designed to be made up of the closed microbedding of two-layer atresia and at least one the porous microbedding be clipped between two-layer closed microbedding, glue can be effectively avoided to enter in porous microbedding like this, and porous buffer film is inside and outside identical, can facilitate compound.
Be introduced the structure of porous buffer film in the present embodiment for the first porous buffer film 5, the structure of the second porous buffer film 9 is identical with it, repeats no more.
As shown in Figure 2, first porous buffer film 5 is made up of the closed microbedding 52 of two-layer atresia and three the porous microbeddings 51 be clipped between two-layer closed microbedding 52, wherein the design of porous microbedding 51 is with embodiment 1, be composited by three porous microbeddings 51 are overlapping, glue can be effectively avoided to enter in porous microbedding 31 like this, and the first porous buffer film 3 is inside and outside identical, can facilitate compound.
embodiment 3
In example 2, the second porous buffer film 9 and heat-sealing film 10 are for together with being heat sealing at.As different from Example 2, in the present embodiment, as shown in Figure 3, in order to improve interlaminar strength, the second porous buffer film 9 is bonded together by the 5th adhesive layer 11 with heat-sealing film 10.
embodiment 4
On the basis of embodiment 3; for improving the first porous buffer film 5 and the outer interlayer adhesion protected between PA casting films 3; in the present embodiment; as shown in Figure 4; the side of PA casting films 3 of protecting toward the outside of the first porous buffer film 5 forms corona layer 53 through corona treatment; after corona treatment, the first porous buffer film 5 can and outer protection between PA casting films 3 form good interlaminar bonding.
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 shock-resistant large-scale lithium battery aluminum-plastic film; it is characterized in that; described lithium battery aluminum-plastic film has layer structure; comprise outer protection PET casting films, the first adhesive layer, outer protection PA casting films, the second adhesive layer, the first porous buffer film, the 3rd adhesive layer, aluminium foil, the 4th adhesive layer, the second porous buffer film and heat-sealing film from top to bottom successively, first, second porous buffer film wherein said at least comprises the porous microbedding that one deck is distributed with through hole.
2. shock-resistant large-scale lithium battery aluminum-plastic film as claimed in claim 1, is characterized in that, first, second porous buffer film described is CPP film.
3. shock-resistant large-scale lithium battery aluminum-plastic film as claimed in claim 1 or 2, is characterized in that, first, second porous buffer film described is composited by the described porous microbedding of more than at least three layers respectively.
4. shock-resistant large-scale lithium battery aluminum-plastic film as claimed in claim 1 or 2, it is characterized in that, first, second porous buffer film described respectively by two atresias closed microbedding and be clipped between two closed microbeddings described at least one porous microbedding and be composited.
5. shock-resistant large-scale lithium battery aluminum-plastic film as claimed in claim 4, is characterized in that, the side towards described outer protection PA casting films of described first porous buffer film forms corona layer through corona treatment.
6. shock-resistant large-scale lithium battery aluminum-plastic film as claimed in claim 4, is characterized in that, is also provided with the 5th adhesive layer between described second porous buffer film and described heat-sealing film.
7. shock-resistant large-scale lithium battery aluminum-plastic film as claimed in claim 6, is characterized in that, the thickness of described 5th adhesive layer is 2 ~ 6 microns.
8. shock-resistant large-scale lithium battery aluminum-plastic film as claimed in claim 1 or 2, it is characterized in that, the thickness of described heat-sealing film is 30 ~ 50 microns, the thickness of described aluminium foil is 25 ~ 50 microns, the thickness of described outer protection PA casting films is 20 ~ 40 microns, the thickness of described outer protection PET casting films is 20 ~ 40 microns, and the thickness of first, second porous buffer film described is respectively 10 ~ 30 microns; The thickness of described first, second, third, fourth adhesive layer is 2 ~ 6 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520085154.5U CN204558554U (en) | 2015-02-06 | 2015-02-06 | A kind of shock-resistant large-scale lithium battery aluminum-plastic film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520085154.5U CN204558554U (en) | 2015-02-06 | 2015-02-06 | A kind of shock-resistant large-scale lithium battery aluminum-plastic film |
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| CN204558554U true CN204558554U (en) | 2015-08-12 |
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| CN201520085154.5U Active CN204558554U (en) | 2015-02-06 | 2015-02-06 | A kind of shock-resistant large-scale lithium battery aluminum-plastic film |
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- 2015-02-06 CN CN201520085154.5U patent/CN204558554U/en active Active
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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: 20151110 Address after: 214400, Jiangsu, Wuxi Jiangyin 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: No. 26, Tonggang Road, Changjing Town, Jiangyin City, Wuxi City, Jiangsu Province, 214400 Patentee before: JIANGYIN SUDA HUICHENG COMPOSITE MATERIAL CO.,LTD. |
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| CP03 | Change of name, title or address |