CN204558549U - A kind of explosion-proof lithium battery aluminum plastic film - Google Patents
A kind of explosion-proof lithium battery aluminum plastic film Download PDFInfo
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- CN204558549U CN204558549U CN201520084988.4U CN201520084988U CN204558549U CN 204558549 U CN204558549 U CN 204558549U CN 201520084988 U CN201520084988 U CN 201520084988U CN 204558549 U CN204558549 U CN 204558549U
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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 explosion-proof lithium battery aluminum plastic film; described lithium battery aluminum-plastic film has layer structure; comprise PA casting films external protection, adhesive layer, aluminium foil layer, adhesive layer, outer separating film layer, porous buffering rete, interior separating film layer, PP leaching membrane layer and CPP casting films hot sealing layer from outside to inside successively, wherein said porous buffering rete is distributed with through hole.The utility model has added porous buffer film by the side of the close inner package of the aluminium foil in 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; By arranging inside and outside separating film layer, adhesive is inhibit to penetrate in porous buffering rete; And the selection of separating film layer makes porous cushion rete and adjacent layer has effective adhesive.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 explosion-proof 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 explosion-proof 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 explosion-proof lithium battery aluminum plastic film of design; described lithium battery aluminum-plastic film has layer structure; comprise PA casting films external protection, adhesive layer, aluminium foil layer, adhesive layer, outer separating film layer, porous buffering rete, interior separating film layer, PP leaching membrane layer and CPP casting films hot sealing layer from outside to inside successively, wherein said porous buffering rete is distributed with through hole.
For improving buffer capacity, preferably, described porous buffering rete is composited by least two-layer above microbedding, and each microbedding is distributed with through hole, and the through hole of each microbedding is staggered.Still more preferably, described porous buffering rete is composited by the microbedding that three layers are distributed with through hole respectively.For the ease of compound porous buffer film, and improve the barrier of lithium battery aluminum-plastic film, preferably, described microbedding is PE or the PP film being distributed with through hole.
For the ease of cushioning rete phase compound with porous, preferably, described inside and outside separating film layer is PE or PP film.
In order to improve the mechanical property of lithium battery aluminum-plastic film, preferably, also there is PET casting films external protection in the outside of described PA casting films external protection by adhesive bond.On thickness, further preferably, the thickness of described PET casting films external protection is 20 ~ 40 microns.
On thickness preferably; the thickness of described film hot sealing layer is 30 ~ 50 microns; the thickness of described leaching membrane layer is 20 ~ 40 microns; the thickness of described aluminium foil layer is 25 ~ 50 microns; the thickness of described porous buffering rete is 10 ~ 30 microns; the thickness of described inside and outside separating film layer is 5 ~ 10 microns, and the thickness of described adhesive layer is 2 ~ 6 microns, and the thickness of described PA casting films external protection is 20 ~ 40 microns.
Advantage of the present utility model and beneficial effect are: the utility model has added porous buffering rete by the side of the close inner package of the aluminium foil in 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; By arranging inside and outside separating film layer, inhibit adhesive to penetrate in porous buffering rete, fully ensure that the buffer capacity of porous buffering rete; And the selection of separating film layer, making porous cushion rete can have effective adhesive with adjacent layer.This 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 explosion-proof lithium battery aluminum plastic film in embodiment 1;
Fig. 2 is the cross section structure schematic diagram of the explosion-proof lithium battery aluminum plastic film in embodiment 2;
Fig. 3 is the cross section structure schematic diagram of the explosion-proof lithium battery aluminum plastic film in embodiment 3.
In figure: 1, PA casting films external protection; 2-1, the first adhesive layer; 2-2, the second adhesive layer; 2-3, the 3rd adhesive layer; 3, aluminium foil layer; 4, outer separating film layer; 5, porous buffering rete; 6, interior separating film layer; 7, PP leaching membrane layer; 8, CPP curtain coating rete 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 aluminum-plastic film that inventor proposes has layer structure, and it sets gradually PA casting films external protection 1, first adhesive layer 2-1, aluminium foil layer 3, second adhesive layer 2-2, outer separating film layer 4, porous buffering rete 5, interior separating film layer 6, PP leaching membrane layer 7 and CPP casting films hot sealing layer 8 from outside to inside.
Wherein, PA casting films external protection 1 plays the effect of protection aluminum plastic film, enhancing, and thickness is selected 20 ~ 40 microns and is advisable; Aluminium foil layer 3 plays the effect of liquid barrier, shading, and thickness is selected 25 ~ 50 microns and is advisable; Porous buffering rete 5 is PE, and thickness is selected 10 ~ 30 microns and is advisable, and it is formed by the heat seal of two-layer PE microbedding, and each microbedding is evenly distributed with through hole, and the through hole of each microbedding is staggered; Outer separating film layer 4 and interior separating film layer 6 are PE film, it is heat sealing at the both sides of porous buffering rete 5, to block the surperficial through hole of porous buffering rete 5, to ensure that the shock-absorbing capacity of porous buffering rete 5 is not by the impact of the adhesive of its both sides, thickness is selected 5 ~ 10 microns and is advisable; The effect of separating film layer 6 and CPP casting films hot sealing layer 8 in PP leaching membrane layer 7 plays and effectively connects, thickness is selected 20 ~ 40 microns and is advisable; Film hot sealing layer 8 plays the effect of heat-sealing, liquid barrier, and thickness is selected 30 ~ 50 microns and is advisable.In addition, the thickness selection 2 ~ 6 microns of each adhesive layer is advisable.
embodiment 2
As different from Example 1, in the present embodiment, as shown in Figure 2, porous buffering rete 5 is PP film, and it is formed by the heat seal of three layers of PP film microbedding, and each microbedding is evenly distributed with through hole, and the through hole of each microbedding is staggered.By arranging the microbedding that three layers are distributed with through hole, effectively ensure that the shock-absorbing capacity of porous buffering rete 5.
In addition, cushioning the bonding strength of rete 5 to improve inside and outside separating film layer 6,4 and porous, at selection porous buffer film 5 for being distributed with on the basis of PP film of through hole, selecting inside and outside separating film layer 6,4 to be PP film.
embodiment 3
As different from Example 2, in the present embodiment, the outside of PA casting films external protection 1 also has thickness to be the PET casting films external protection 9 of 20 ~ 40 microns by adhesive bond.As shown in Figure 3; lithium battery aluminum-plastic film has layer structure, and it 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, the 3rd adhesive layer 2-3, outer separating film layer 4, porous buffering rete 5, interior separating film layer 6, PP leaching membrane layer 7 and CPP casting films hot sealing layer 8 from outside to inside.
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. an explosion-proof lithium battery aluminum plastic film; it is characterized in that; described lithium battery aluminum-plastic film has layer structure; comprise PA casting films external protection, adhesive layer, aluminium foil layer, adhesive layer, outer separating film layer, porous buffering rete, interior separating film layer, PP leaching membrane layer and CPP casting films hot sealing layer from outside to inside successively, wherein said porous buffering rete is distributed with through hole.
2. explosion-proof lithium battery aluminum plastic film as claimed in claim 1, is characterized in that, described porous buffering rete is composited by least two-layer above microbedding, and each microbedding is distributed with through hole, and the through hole of each microbedding is staggered.
3. explosion-proof lithium battery aluminum plastic film as claimed in claim 2, is characterized in that, described porous buffering rete is composited by the microbedding that three layers are distributed with through hole respectively.
4. explosion-proof lithium battery aluminum plastic film as claimed in claim 2, it is characterized in that, described microbedding is PE or the PP film being distributed with through hole.
5. explosion-proof lithium battery aluminum plastic film as claimed in claim 1, it is characterized in that, described inside and outside separating film layer is PE or PP film.
6. explosion-proof lithium battery aluminum plastic film as claimed in claim 1, it is characterized in that, also there is PET casting films external protection in the outside of described PA casting films external protection by adhesive bond.
7. explosion-proof lithium battery aluminum plastic film as claimed in claim 6, it is characterized in that, the thickness of described PET casting films external protection is 20 ~ 40 microns.
8. explosion-proof lithium battery aluminum plastic film as claimed in claim 1; it is characterized in that; the thickness of described film hot sealing layer is 30 ~ 50 microns; the thickness of described leaching membrane layer is 20 ~ 40 microns; the thickness of described aluminium foil layer is 25 ~ 50 microns, and the thickness of described porous buffering rete is 10 ~ 30 microns, and the thickness of described inside and outside separating film layer is 5 ~ 10 microns; the thickness of described adhesive layer is 2 ~ 6 microns, and the thickness of described PA casting films external protection is 20 ~ 40 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520084988.4U CN204558549U (en) | 2015-02-06 | 2015-02-06 | A kind of explosion-proof lithium battery aluminum plastic film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520084988.4U CN204558549U (en) | 2015-02-06 | 2015-02-06 | A kind of explosion-proof lithium battery aluminum plastic film |
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| CN204558549U true CN204558549U (en) | 2015-08-12 |
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| CN201520084988.4U Active CN204558549U (en) | 2015-02-06 | 2015-02-06 | A kind of explosion-proof lithium battery aluminum plastic film |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111106270A (en) * | 2018-10-26 | 2020-05-05 | 宁德新能源科技有限公司 | Multilayer sheet and battery |
| CN113547827A (en) * | 2021-07-27 | 2021-10-26 | Oppo广东移动通信有限公司 | Film pasting method |
-
2015
- 2015-02-06 CN CN201520084988.4U patent/CN204558549U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111106270A (en) * | 2018-10-26 | 2020-05-05 | 宁德新能源科技有限公司 | Multilayer sheet and battery |
| CN111106270B (en) * | 2018-10-26 | 2024-06-07 | 宁德新能源科技有限公司 | Multilayer sheet and battery |
| CN113547827A (en) * | 2021-07-27 | 2021-10-26 | Oppo广东移动通信有限公司 | Film pasting method |
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| Date | Code | Title | Description |
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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: 20151111 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 | ||
| 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. |