CN103647029B - A kind of lithium battery aluminum-plastic film and preparation method - Google Patents
A kind of lithium battery aluminum-plastic film and preparation method Download PDFInfo
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- CN103647029B CN103647029B CN201310614463.2A CN201310614463A CN103647029B CN 103647029 B CN103647029 B CN 103647029B CN 201310614463 A CN201310614463 A CN 201310614463A CN 103647029 B CN103647029 B CN 103647029B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/116—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/085—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/06—Coating on the layer surface on metal layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/26—Polymeric coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/304—Insulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/752—Corrosion inhibitor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2369/00—Polycarbonates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2439/00—Containers; Receptacles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2581/00—Seals; Sealing equipment; Gaskets
-
- 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 invention belongs to plastic-aluminum packaging film field of compound material, especially a kind of lithium battery aluminum-plastic film and preparation method, ecto-entad is followed successively by following structure: heat resistant poly acid imide (PI) layer, adhesive layer, aluminium foil layer, corrosion-resistant finishes, adhesive layer, hot sealing layer, it is characterized in that, the surface of described hot sealing layer is provided with concavo-convex network.Relative to prior art, the concavo-convex grid of hot sealing layer of the present invention increases considerably heat-sealing specific surface area, and forms strong mechanical tong lock during heat-sealing, can reach higher heat seal strength, lithium battery safety in utilization provides guarantee reliably.
Description
Technical field
The invention belongs to plastic-aluminum packaging film field of compound material, especially a kind of lithium battery aluminum-plastic film and preparation method.
Background technology
Lithium battery aluminum-plastic composite membrane, usually multiple structure, the structure of ecto-entad is followed successively by: protective layer, barrier layer, hot sealing layer.The most typically by binding resin composite molding in a different process.Protective layer need to have splendid toughness, resistance to elevated temperatures.Barrier layer plays obstruct steam, oxygen effect.Hot sealing layer is generally PP(polypropylene) material, its effect is to bond under certain temperature and pressure when packaging or encapsulation, play sealing effect, but at home under technical conditions, heat seal strength is on the low side, generally heat seal strength≤20N/cm, and electrolyte resistance effect is undesirable, constrains the development of domestic lithium battery aluminum plastic film to a certain extent.
Summary of the invention
In order to overcome drawbacks described above, it is an object of the invention to provide and a kind of there is excellent heat sealability and the lithium battery aluminum-plastic film of good electrolyte resistance performance and preparation method, thus increase safety in utilization, and there is the processing characteristics of excellence, it is easy to continuous prodution.
To achieve these goals, the technical solution adopted in the present invention is: described lithium battery aluminum-plastic film is multiple structure, ecto-entad is followed successively by following structure: heat resistant poly acid imide (PI) layer, adhesive layer, aluminium foil layer, corrosion-resistant finishes, adhesive layer, hot sealing layer, it is characterized in that, the surface of described hot sealing layer is provided with concavo-convex network.
Aforesaid a kind of lithium battery aluminum-plastic film, described hot sealing layer is cast polypropylene (CPP).
Aforesaid a kind of lithium battery aluminum-plastic film, described hot sealing layer one side is provided with concavo-convex network.
Aforesaid a kind of lithium battery aluminum-plastic film, described hot sealing layer one side is provided with concavo-convex network, and another side is shiny surface.
Aforesaid a kind of lithium battery aluminum-plastic film, the concavo-convex network of described hot sealing layer is positioned at the internal layer of hot sealing layer, and shiny surface is positioned at the coated face of glue.
Aforesaid a kind of lithium battery aluminum-plastic film, the concavo-convex mesh shape of described hot sealing layer is rectangle, rhombus or hexagon.
Aforesaid a kind of lithium battery aluminum-plastic film, the concavo-convex network density of described hot sealing layer is 1-10 lattice/mm2, the recess depths of described concavo-convex network is 2-5 μm.
Aforesaid a kind of lithium battery aluminum-plastic film, described corrosion-resistant finishes is acrylic ester grafted anti-corrosive paint of epoxy resin.
The method manufacturing aforesaid a kind of lithium battery aluminum-plastic film, comprises the following steps that:
1) by polypropylene (PP) by extrusion casting technique, through having steel rider and the rubber rollers calendering of accurate concaveconvex structure, the CPP film of concavo-convex fenestral fabric is formed, standby to make；
2) polyimides (PI) extruded casting and stretching is prepared PI film, standby to make；
3) toughness aluminium foil is coated with corrosion-resistant coating through intaglio plate；
4) it is coated with the aluminium foil layer coated on one side adhesive of corrosion-resistant coating, is combined standby CPP film by dry type；
5) aluminium foil layer another side is coated with adhesive, is combined standby PI film by dry type；
6) aluminum plastic film being combined is solidified 1-3 days at 60-100 DEG C, cut, be packaged to be lithium battery aluminum-plastic film.
Aforesaid a kind of lithium battery aluminum-plastic film, in heat seal condition: 190 DEG C, when 3s, 0.4Mpa, the initial thermal sealing strength of lithium battery aluminum-plastic film is 35-42N/cm.
Relative to prior art, the concavo-convex grid of hot sealing layer of the present invention increases considerably heat-sealing specific surface area, and forms strong mechanical tong lock during heat-sealing, can reach higher heat seal strength；One layer of corrosion-resistant finishes of aluminium foil layer surface coating, improves aluminium foil self resistance to corrosion, and finished product lithium battery aluminum-plastic film provides guarantee reliably to lithium battery safety in utilization.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 be the concavo-convex mesh shape of hot sealing layer of the present invention be the top view of rectangle；
Fig. 3 be the concavo-convex mesh shape of hot sealing layer of the present invention be the top view of rhombus；
Fig. 4 be the concavo-convex mesh shape of hot sealing layer of the present invention be hexagonal top view；
Fig. 5 be hot sealing layer of the present invention be the top view of shiny surface.
Detailed description of the invention
In conjunction with being illustrated below, embodiment of the present invention is described in detail
As shown in Figure 1, the present invention is a kind of lithium battery aluminum-plastic film, structure including ecto-entad sets gradually heat resistant poly acid imide (PI) layer 1, aluminium foil layer 2, corrosion-resistant coating 5 (i.e. corrosion-resistant finishes) and hot sealing layer 3 cast polypropylene (CPP), it is provided with adhesive layer 4 between described PI layer 1 and described aluminium foil layer 2, use dry-lamination process, described aluminium foil layer 2 is coated with corrosion-resistant coating 5 through intaglio plate, it is provided with adhesive layer 4(i.e. adhesive layer) between aluminium foil layer 2 and the described hot sealing layer 3 of described coating corrosion-resistant coating 5, use dry-lamination process, the surface, endosexine of described hot sealing layer 3 is provided with concavo-convex network AA, extexine (gluing binding face, the i.e. coated face of glue) it is shiny surface BB.
Described concavo-convex network AA be shaped as rectangle (as shown in Figure 2), rhombus (as shown in Figure 3) or hexagon (as shown in Figure 4).
Embodiment 1
Aluminium foil layer 2 one side is combined by adhesive layer 4 with thermostability PI layer, is initially formed corrosion-resistant coating 5 on another side, it is combined with hot sealing layer 3 dry type by adhesive layer 4 afterwards, the thickness of described PI layer is 25 μm, the thickness of aluminium foil is 20 μm, hot sealing layer be cast polypropylene (CPP) thickness be 20 μm, corrosion-resistant coating 5 thickness is 3 μm, adhesive layer 4 thickness is 3 μm, the surface, endosexine of hot sealing layer 3 is provided with concavo-convex network AA of rectangle (as shown in Figure 2), and the density of concavo-convex network is 2 lattice/mm2, the degree of depth of recess is 2 μm, extexine (gluing binding face) be shiny surface BB(as shown in Figure 5), the initial thermal sealing strength of detection product is 35N/cm(heat seal condition: 190 DEG C, 3s, 0.4Mpa).
Embodiment 2
Aluminium foil layer 2 one side is combined by adhesive layer 4 with thermostability PI layer, is initially formed corrosion-resistant coating 5 on another side, it is combined with hot sealing layer 3 dry type by adhesive layer 4 afterwards, the thickness of described PI layer is 20 μm, the thickness of aluminium foil is 25 μm, hot sealing layer be cast polypropylene (CPP) thickness be 30 μm, corrosion-resistant coating 5 thickness is 3 μm, adhesive layer 4 thickness is 5 μm, the surface, endosexine of hot sealing layer 3 is provided with concavo-convex network AA of rhombus (as shown in Figure 3), and the density of concavo-convex network is 6 lattice/mm2, the degree of depth of recess is 3 μm, extexine (gluing binding face) be shiny surface BB(as shown in Figure 5), the initial thermal sealing strength of detection product is 40N/cm(heat seal condition: 190 DEG C, 3s, 0.4Mpa).
Embodiment 3
Aluminium foil layer 2 one side is combined by adhesive layer 4 with thermostability PI layer, is initially formed corrosion-resistant coating 5 on another side, it is combined with hot sealing layer 3 dry type by adhesive layer 4 afterwards, the thickness of described PI layer is 15 μm, the thickness of aluminium foil is 25 μm, hot sealing layer be cast polypropylene (CPP) thickness be 35 μm, corrosion-resistant coating 5 thickness is 3 μm, adhesive layer 4 thickness is 5 μm, the surface, endosexine of hot sealing layer 3 is provided with concavo-convex network AA of hexagon (as shown in Figure 4), and the density of concavo-convex network is 10 lattice/mm2, the degree of depth of recess is 5 μm, extexine (gluing binding face) be shiny surface BB(as shown in Figure 5), the initial thermal sealing strength of detection product is 42N/cm(heat seal condition: 190 DEG C, 3s, 0.4Mpa).
Comparative example
Nylon layer 1 and aluminium foil layer 2 and aluminium foil layer 2 and hot sealing layer 3 all carry out dry type by adhesive layer 4 and are combined.The thickness of described nylon layer is 20 μm, the thickness of described aluminium foil is 25 μm, hot sealing layer be cast polypropylene (CPP) thickness be 30 μm, adhesive layer 4 thickness is 5 μm, the inside and outside top layer of hot sealing layer 3 is shiny surface BB(as shown in Figure 5), the initial thermal sealing strength of detection product is 18N/cm(heat seal condition: 190 DEG C, 3s, 0.4Mpa).
By the lithium battery aluminum-plastic film made by embodiment 1-3 and comparative example three mouthfuls envelope, putting into the electrolyte of equivalent, make sample sack of the same size, place one week at 80 DEG C, there is not lamination in embodiment 1-3 internal layer, and comparative example occurred layering after 3 days.
A kind of lithium battery aluminum-plastic film of the present invention has more reliable heat seal quality and ensures and excellent electrolyte resistance performance, it is possible to reduce terminal client packaging and storage process losses.
Above-described embodiment limits the present invention, the technical scheme that the mode of all employing equivalents or equivalent transformation is obtained the most in any form, all falls within protection scope of the present invention.
Claims (5)
1. a lithium battery aluminum-plastic film, ecto-entad is followed successively by following structure: heat resistant poly acid imide (PI) layer, adhesive layer, aluminium foil layer, corrosion-resistant finishes, adhesive layer, hot sealing layer, it is characterised in that the surface of described hot sealing layer is provided with concavo-convex network；Described hot sealing layer one side is provided with concavo-convex network, and another side is shiny surface；The concavo-convex network of described hot sealing layer is positioned at the internal layer of hot sealing layer, and shiny surface is positioned at the coated face of glue；The concavo-convex network density of described hot sealing layer is 1-10 lattice/mm2, the recess depths of described concavo-convex network is 2-5 μm.
A kind of lithium battery aluminum-plastic film the most according to claim 1, it is characterised in that: described hot sealing layer is cast polypropylene (CPP).
A kind of lithium battery aluminum-plastic film the most according to claim 1 and 2, it is characterised in that: the concavo-convex mesh shape of described hot sealing layer is rectangle, rhombus or hexagon.
A kind of lithium battery aluminum-plastic film the most according to claim 1, it is characterised in that: described corrosion-resistant finishes is acrylic ester grafted anti-corrosive paint of epoxy resin.
5. the method for a kind of lithium battery aluminum-plastic film described in any one of manufacturing claims 1-4, it is characterised in that comprise the following steps that:
1) by polypropylene (PP) by extrusion casting technique, through having steel rider and the rubber rollers calendering of accurate concaveconvex structure, the cast polypropylene film of concavo-convex fenestral fabric is formed, standby to make；Described cast polypropylene film is hot sealing layer；Described hot sealing layer one side is provided with concavo-convex network, and another side is shiny surface；The concavo-convex network of described hot sealing layer is positioned at the internal layer of hot sealing layer, and shiny surface is positioned at the coated face of glue；The concavo-convex network density of described hot sealing layer is 1-10 lattice/mm2, the recess depths of described concavo-convex network is 2-5 μm；
2) polyimides (PI) extruded casting and stretching is prepared polyimide film, standby to make；
3) toughness aluminium foil is coated with corrosion-resistant finishes through intaglio plate；
4) it is coated with the aluminium foil layer coated on one side binding agent of corrosion-resistant coating, is combined standby cast polypropylene film by dry type；
5) by aluminium foil layer another side coating adhesive, it is combined standby polyimide film by dry type；
6) aluminum plastic film being combined is solidified 1-3 days at 60-100 DEG C, cut, be packaged to be lithium battery aluminum-plastic film.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310614463.2A CN103647029B (en) | 2013-11-28 | 2013-11-28 | A kind of lithium battery aluminum-plastic film and preparation method |
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| CN201310614463.2A CN103647029B (en) | 2013-11-28 | 2013-11-28 | A kind of lithium battery aluminum-plastic film and preparation method |
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| CN103647029B true CN103647029B (en) | 2017-01-04 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016111182A1 (en) * | 2015-01-06 | 2016-07-14 | 凸版印刷株式会社 | Power storage device outer casing material |
| EP3356251B1 (en) * | 2015-09-30 | 2020-09-02 | 3M Innovative Properties Company | Multilayer barrier stack |
| WO2017177358A1 (en) * | 2016-04-11 | 2017-10-19 | 宁德新能源科技有限公司 | Packaging seal structure, preparation method therefor and flexibly packaged cell |
| CN106450490B (en) * | 2016-12-16 | 2019-06-07 | 天津力神电池股份有限公司 | The analyzing detecting method of soft package lithium battery microvia failure reason |
| CN108943928A (en) * | 2017-09-11 | 2018-12-07 | 江阴苏达汇诚复合材料股份有限公司 | A kind of high pressure resistant aluminum plastic film and its manufacturing method |
| CN108754472A (en) * | 2018-06-22 | 2018-11-06 | 惠州市百泉河实业有限公司 | A kind of passivating solution suitable for the processing of aluminum plastic film aluminium foil |
| CN109494317A (en) * | 2018-09-17 | 2019-03-19 | 上海恩捷新材料科技有限公司 | A kind of aluminum plastic film of electrolyte resistance and preparation method thereof |
| CN109367155A (en) * | 2018-10-18 | 2019-02-22 | 常州斯威克光伏新材料有限公司 | A kind of dynamic lithium battery aluminum plastic film and preparation method thereof |
| KR102387069B1 (en) * | 2019-08-06 | 2022-04-18 | 주식회사 비티엘첨단소재 | Aluminium pouch film for the secondary battery and the manufacturing method thereof |
| CN110497679A (en) * | 2019-08-19 | 2019-11-26 | 安徽松泰包装材料有限公司 | A kind of CPP protective film that shading is moisture-proof |
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| JP2003092087A (en) * | 2001-09-19 | 2003-03-28 | Tokai Rubber Ind Ltd | Film material for power generation element |
| JP2006066113A (en) * | 2004-08-25 | 2006-03-09 | Toppan Printing Co Ltd | Laminating material and outer packaging for battery using laminating material |
| JP5228360B2 (en) * | 2007-04-12 | 2013-07-03 | ソニー株式会社 | Battery pack |
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| CN102602597A (en) * | 2012-03-16 | 2012-07-25 | 东莞市恒雅包装材料有限公司 | Aluminum-plastic packaging film for lithium ion battery and manufacturing method of aluminum-plastic packaging film |
| CN103331957A (en) * | 2013-07-10 | 2013-10-02 | 佛山佛塑科技集团股份有限公司 | Easy-cold-punch-molding soft packaging composite material, and preparation method and molding method thereof |
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