CN204558559U - A kind of lithium battery aluminum-plastic film of high-ductility high sealing - Google Patents
A kind of lithium battery aluminum-plastic film of high-ductility high sealing Download PDFInfo
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- CN204558559U CN204558559U CN201520093887.3U CN201520093887U CN204558559U CN 204558559 U CN204558559 U CN 204558559U CN 201520093887 U CN201520093887 U CN 201520093887U CN 204558559 U CN204558559 U CN 204558559U
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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 aluminum-plastic film of high-ductility high sealing; described lithium battery aluminum-plastic film has layer structure; comprise resilient coating, PP leaching membrane layer and CPP film hot sealing layer in PA casting films external protection, adhesive layer, the outer resilient coating of polyethylene low ratio foamed film, adhesive layer, aluminium foil layer, adhesive layer, polyethylene low ratio foamed film from outside to inside successively, wherein said adhesive layer is a kind of in polyurethane adhesive, epoxyn, acrylic resin adhesive, TPU PUR.The utility model has added the inside and outside resilient coating of polyethylene low ratio foamed film by the side, innner and outer of the aluminium foil in lithium battery aluminum-plastic film, effectively improve the buffer capacity of aluminum plastic film, inhibit the damaging influence because aluminum plastic film generation bubbling or processing mode reason produce aluminium foil contained in lithium battery aluminum-plastic film, and greatly improve plunger bond strength by arranging PP film, therefore substantially increase safety in utilization and the useful life of lithium battery aluminum-plastic film.
Description
Technical field
The utility model relates to a kind of lithium battery manufactured materials, is specifically related to a kind of lithium battery aluminum-plastic film of high-ductility high sealing.
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.
In addition, lithium battery encapsulation aluminum plastic film, in the process being molded into lithium battery encapsulation outer bag, also easily makes aluminium foil layer in aluminum plastic film produce folding line, affects the sealing of aluminum plastic film.
Utility model content
The purpose of this utility model is to overcome the defect existed in prior art, provides a kind of lithium battery aluminum-plastic film of high-ductility high sealing, improves lithium battery aluminum-plastic film and suppresses to produce the ability of bubbling, improves the sealing of aluminum plastic film.
For achieving the above object; the technical solution of the utility model designs a kind of lithium battery aluminum-plastic film of high-ductility high sealing; described lithium battery aluminum-plastic film has layer structure; comprise resilient coating, PP leaching membrane layer and CPP film hot sealing layer in PA casting films external protection, adhesive layer, the outer resilient coating of polyethylene low ratio foamed film, adhesive layer, aluminium foil layer, adhesive layer, polyethylene low ratio foamed film from outside to inside successively, wherein said 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 by adhesive layer.Further preferably, on thickness, the thickness of described PET casting films external protection is 20 ~ 40 microns.
In order to improve the sealing of lithium battery plastic-aluminum packaging film, preferably, in described polyethylene low ratio foamed film, the outside of resilient coating and the inner side of the outer resilient coating of described polyethylene low ratio foamed film are bonded with BOPP enhancing rete respectively.Further preferably, described BOPP strengthens the thickness of rete is 5 ~ 15 microns.
In order to improve the sealing of lithium battery plastic-aluminum packaging film, or preferably, in described polyethylene low ratio foamed film, the medial and lateral of resilient coating and the medial and lateral of the outer resilient coating of described polyethylene low ratio foamed film are bonded with BOPP enhancing rete respectively.Further preferably, described BOPP strengthens the thickness of rete is 5 ~ 15 microns.
On thickness preferably, the thickness of the inside and outside resilient coating of described polyethylene low ratio foamed film is 5 ~ 30 microns; The thickness of described CPP film hot sealing layer is 30 ~ 50 microns; The thickness of described PP film is 20 ~ 40 microns; The thickness of described aluminium foil is 25 ~ 50 microns; The thickness of described PA casting films external protection is 20 ~ 40 microns; The thickness of each described adhesive layer is 2 ~ 6 microns.
Advantage of the present utility model and beneficial effect are: the utility model is by the aluminium foil in lithium battery aluminum-plastic film, outside has added in polyethylene low ratio foamed film respectively, outer resilient coating, effectively improve the buffer capacity of aluminum plastic film, improve aluminum plastic film to suppress produce the ability of bubbling and bear the ability of external force in the course of processing, and then inhibit because aluminum plastic film generation bubbling or processing mode reason are to the damaging influence of aluminium foil generation contained in lithium battery aluminum-plastic film, and greatly improve plunger bond strength by arranging PP film, therefore safety in utilization and the useful life of lithium battery aluminum-plastic film is substantially increased.
Accompanying drawing explanation
Fig. 1 is the cross section structure schematic diagram of the lithium battery aluminum-plastic film in embodiment 1;
Fig. 2 is the cross section structure schematic diagram of the lithium battery aluminum-plastic film in embodiment 2;
Fig. 3 is the cross section structure schematic diagram of the lithium battery aluminum-plastic film in embodiment 3;
Fig. 4 is the cross section structure schematic diagram of the lithium battery aluminum-plastic film in embodiment 4.
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; 2-4, the 4th adhesive layer; 2-5, the 5th adhesive layer; 2-6, the 6th adhesive layer; 2-7, the 7th adhesive layer; 2-8, the 8th adhesive layer; 3, the outer resilient coating of polyethylene low ratio foamed film; 4, aluminium foil layer; 5, resilient coating in polyethylene low ratio foamed film; 6, PP leaching membrane layer; 7, CPP film hot sealing layer; 8, PET casting films external protection; 9-1 and 9-2, BOPP strengthen rete.
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; it sets gradually resilient coating 5, PP leaching membrane layer 6 and CPP film hot sealing layer 7 in PA casting films external protection 1, first adhesive layer 2-1, outer resilient coating 3, the second adhesive layer 2-2 of polyethylene low ratio foamed film, aluminium foil layer 4, the 3rd adhesive layer 2-3, polyethylene low ratio foamed film from outside to inside, as shown in Figure 1.
Wherein, PA casting films external protection 1 plays protection aluminum plastic film and avoids because of active forces such as external scrapings and the effect of breakage, and thickness is selected 20 ~ 40 microns and is advisable.First, second, third adhesive layer 2-1,2-2,2-3 is chosen as in polyurethane adhesive, epoxyn, acrylic resin adhesive, TPU PUR a kind of, plays the effect of gluing adjacent two layers, and thickness is selected 2 ~ 6 microns and is advisable.Aluminium foil layer 4 plays the effect of obstruct, shading, and thickness is selected 25 ~ 50 microns and is advisable.CPP film hot sealing layer 7 plays the effect of heat-sealing and liquid barrier, and thickness is selected 30 ~ 50 microns and is advisable.What need to draw attention to especially is, the polyethylene low ratio foamed film that the inside and outside resilient coating 5,3 of polyethylene low ratio foamed film adopts is pearl paper, a kind of antidetonation buffering, antistatic, protection against the tide, heat insulation, anti-soda acid, the material of buffering antidetonation, the effect of buffering is played in this aluminum plastic film, thus in reduction aluminum plastic film aluminium foil by the impact of inside and outside impulsive force impaired risk, on thickness select 5 ~ 30 microns be advisable.In addition, PP leaching membrane layer 6 plays resilient coating 5 and CPP film hot sealing layer 7 in bonding polyethylene low ratio foamed film, and thickness is selected 20 ~ 40 microns and is advisable.
embodiment 2
As different from Example 1, the present embodiment improves the mechanical strength of aluminum plastic film, is also bonded with the PET casting films external protection 8 that thickness is 20 ~ 40 microns in the outside of PA casting films external protection 1.As shown in Figure 2, this lithium battery aluminum-plastic film sets gradually resilient coating 5, PP leaching membrane layer 6 and CPP film hot sealing layer 7 in PET casting films external protection 8, first adhesive layer 2-1, PA casting films external protection 1, second adhesive layer 2-2, the outer resilient coating 3 of polyethylene low ratio foamed film, the 3rd adhesive layer 2-3, aluminium foil layer 4, the 4th adhesive layer 2-4, polyethylene low ratio foamed film from outside to inside.
embodiment 3
As different from Example 2, the present embodiment is the sealing improving aluminum plastic film, and in polyethylene low ratio foamed film, the outside of resilient coating 5 and the inner side of the outer resilient coating 3 of polyethylene low ratio foamed film are bonded with the BOPP enhancing rete that thickness is 5 ~ 15 microns respectively.Here, the thickness that BOPP strengthens rete is unsuitable blocked up or excessively thin, then affects the shock-absorbing capacity of the inside and outside resilient coating 5,3 of polyethylene low ratio foamed film because blocked up, crosses thin, the effect of the intensity threshold be out of shape that is hit less than aluminium foil layer 4 in raising plastic-aluminum packaging film.As shown in Figure 3; lithium battery aluminum-plastic film sets gradually resilient coating 5, PP leaching membrane layer 6 and CPP film hot sealing layer 7 in PET casting films external protection 8, first adhesive layer 2-1, PA casting films external protection 1, second adhesive layer 2-2, the outer resilient coating 3 of polyethylene low ratio foamed film, the 3rd adhesive layer 2-3, a BOPP enhancing rete 9-1, the 4th adhesive layer 2-4, aluminium foil layer 4, the 5th adhesive layer 2-5, the 2nd BOPP enhancing rete 9-2, the 6th adhesive layer 2-6, polyethylene low ratio foamed film from outside to inside, as shown in Figure 3.
embodiment 4
As different from Example 2, the present embodiment is improve the sealing of aluminum plastic film, and in polyethylene low ratio foamed film in resilient coating 5, to be bonded with thickness be respectively that the BOPP of 5 ~ 15 microns strengthens rete for the medial and lateral of side and the outer resilient coating 3 of polyethylene low ratio foamed film.As shown in Figure 4, lithium battery aluminum-plastic film sets gradually PET casting films external protection 8 from outside to inside, first adhesive layer 2-1, PA casting films external protection 1, second adhesive layer 2-2, one BOPP strengthens rete 9-1, 3rd adhesive layer 2-3, the outer resilient coating 3 of polyethylene low ratio foamed film, 4th adhesive layer 2-4, 2nd BOPP strengthens rete 9-2, 5th adhesive layer 2-5, aluminium foil layer 4, 6th adhesive layer 2-6, 3rd BOPP strengthens rete 9-3, 7th adhesive layer 2-7, resilient coating 5 in polyethylene low ratio foamed film, 8th adhesive layer 2-8, 4th BOPP strengthens rete 9-4, PP leaching membrane layer 6 and CPP film hot sealing layer 7, 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 (7)
1. the lithium battery aluminum-plastic film of a high-ductility high sealing; it is characterized in that; described lithium battery aluminum-plastic film has layer structure; comprise resilient coating, PP leaching membrane layer and CPP film hot sealing layer in PA casting films external protection, adhesive layer, the outer resilient coating of polyethylene low ratio foamed film, adhesive layer, aluminium foil layer, adhesive layer, polyethylene low ratio foamed film from outside to inside successively, wherein said adhesive layer is a kind of in polyurethane adhesive, epoxyn, acrylic resin adhesive, TPU PUR.
2. the lithium battery aluminum-plastic film of high-ductility high sealing 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 by adhesive layer.
3. the lithium battery aluminum-plastic film of high-ductility high sealing as claimed in claim 2, it is characterized in that, the thickness of described PET casting films external protection is 20 ~ 40 microns.
4. the lithium battery aluminum-plastic film of high-ductility high sealing as claimed in claim 1, is characterized in that, in described polyethylene low ratio foamed film, the outside of resilient coating and the inner side of the outer resilient coating of described polyethylene low ratio foamed film are bonded with BOPP enhancing rete respectively.
5. the lithium battery aluminum-plastic film of high-ductility high sealing as claimed in claim 1, is characterized in that, in described polyethylene low ratio foamed film, the medial and lateral of resilient coating and the medial and lateral of the outer resilient coating of described polyethylene low ratio foamed film are bonded with BOPP enhancing rete respectively.
6. the lithium battery aluminum-plastic film of the high-ductility high sealing as described in claim 4 or 5, is characterized in that, the thickness that described BOPP strengthens rete is 5 ~ 15 microns.
7. the lithium battery aluminum-plastic film of high-ductility high sealing as claimed in claim 1, it is characterized in that, the thickness of the inside and outside resilient coating of described polyethylene low ratio foamed film is 5 ~ 30 microns; The thickness of described CPP film hot sealing layer is 30 ~ 50 microns; The thickness of described PP film is 20 ~ 40 microns; The thickness of described aluminium foil is 25 ~ 50 microns; The thickness of described PA casting films external protection is 20 ~ 40 microns; The thickness of each described adhesive layer is 2 ~ 6 microns.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520093887.3U CN204558559U (en) | 2015-02-10 | 2015-02-10 | A kind of lithium battery aluminum-plastic film of high-ductility high sealing |
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| CN201520093887.3U CN204558559U (en) | 2015-02-10 | 2015-02-10 | A kind of lithium battery aluminum-plastic film of high-ductility high sealing |
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| CN204558559U true CN204558559U (en) | 2015-08-12 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108582807A (en) * | 2018-03-24 | 2018-09-28 | 常州斯威克光伏新材料有限公司 | A kind of preparation method of soft package lithium battery shell encapsulation aluminum-plastic composite membrane |
| CN110744904A (en) * | 2019-10-11 | 2020-02-04 | 成都新柯力化工科技有限公司 | Elastic aluminum plastic film for lithium battery flexible package and preparation method |
| CN111106270A (en) * | 2018-10-26 | 2020-05-05 | 宁德新能源科技有限公司 | Multilayer sheet and battery |
| CN111430586A (en) * | 2020-05-01 | 2020-07-17 | 常州斯威克光伏新材料有限公司 | High-buffer packaging film for lithium battery |
| CN114335827A (en) * | 2021-12-20 | 2022-04-12 | 深圳市广麟材耀新能源材料科技有限公司 | Anti-cracking aluminum plastic film |
-
2015
- 2015-02-10 CN CN201520093887.3U patent/CN204558559U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108582807A (en) * | 2018-03-24 | 2018-09-28 | 常州斯威克光伏新材料有限公司 | A kind of preparation method of soft package lithium battery shell encapsulation aluminum-plastic composite membrane |
| 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 |
| CN110744904A (en) * | 2019-10-11 | 2020-02-04 | 成都新柯力化工科技有限公司 | Elastic aluminum plastic film for lithium battery flexible package and preparation method |
| CN111430586A (en) * | 2020-05-01 | 2020-07-17 | 常州斯威克光伏新材料有限公司 | High-buffer packaging film for lithium battery |
| CN114335827A (en) * | 2021-12-20 | 2022-04-12 | 深圳市广麟材耀新能源材料科技有限公司 | Anti-cracking aluminum plastic film |
| CN114335827B (en) * | 2021-12-20 | 2024-04-02 | 广东广麟材耀新能源材料有限公司 | Anti-cracking aluminum plastic film |
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| 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: 20151123 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 | ||
| 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. |