CN202996917U - Improved type lithium battery flexible packaging film - Google Patents
Improved type lithium battery flexible packaging film Download PDFInfo
- Publication number
- CN202996917U CN202996917U CN2012206392402U CN201220639240U CN202996917U CN 202996917 U CN202996917 U CN 202996917U CN 2012206392402 U CN2012206392402 U CN 2012206392402U CN 201220639240 U CN201220639240 U CN 201220639240U CN 202996917 U CN202996917 U CN 202996917U
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- lithium battery
- flexible packaging
- resin film
- film layer
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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 relates to a flexible packaging film, in particular to an improved type lithium battery flexible packaging film which is resistant to electrolyte pollution and suitable for a high-power flexible packaging lithium battery. According to the improved type lithium battery flexible packaging film, a heat-resisting resin thin layer, a middle base layer and a thermoplastic resin thin layer are sequentially arranged from outside to inside. The middle base layer is respectively connected with the heat-resisting resin thin layer and the thermoplastic resin thin layer in an adhesiveness mode. The middle base layer is an ethylene-vinyl alcohol copolymer layer, and outer surfaces of the heat-resisting resin thin layer and the thermoplastic resin thin layer are respectively coated with an anti-corrosion layer. The improved type lithium battery flexible packaging film has the perfect elongation, strength of extension and a deep drawing property. The improved type lithium battery flexible packaging film can be used for manufacturing the high-power flexible packaging lithium battery of which the thickness exceeds 20mm, moreover, also for effectively preventing electrolyte from permeating and has good characters of being waterproof, damp-proof, insulated and high in heat-seal strength.
Description
Technical field
The utility model relates to a kind of flexible packaging film, and espespecially a kind of electrolyte resistance pollutes and be fit to the modified model lithium battery flexible packaging film of high-power soft packaging lithium battery.
Background technology
The development experience of lithium battery three phases, at first be the lithium battery of box hat packing, the lithium battery of aluminum hull packing afterwards, the flexible package lithium cell that uses at present is third generation product, because flexible package lithium cell has the advantages such as capacity is large, lightweight, volume is little, fail safe is good, become the developing direction of lithium battery.at present, development due to lithium electric power battery, require the capacity of lithium battery increasing, the flexible packaging film of lithium battery is also more and more thicker, if produce the high-power soft packaging lithium battery that thickness surpasses 20 millimeters, do not find that also the flexible package aluminum plastic film of better deep drawability can satisfy the demand, can only use aluminum hull or box hat, and the lithium battery of aluminum hull and box hat packing, because aluminum hull and box hat have the build-up of pressure effect, security performance is poor, be used for high power battery hidden danger large, easily blast, simultaneously, on market, existing flexible package film for lithium battery is generally plastic-aluminum packaging film, it is as the intermediate layer with aluminium foil layer, then at the aluminium foil layer outer surface, protective layer is set respectively, inner surface arranges hot sealing layer, and aluminium foil is limited by the defective of self, elongation is smaller, for example the elongation of the aluminium foil of 40 micron thickness is the highest only has 12% left and right, deep drawability is difficult to reach the requirement of high-power lithium battery, the best electric maximum deep-draw with the flexible package aluminum plastic film of lithium of performance at present generally is no more than 10 millimeters, and be to use the above aluminum plastic film deep-draw of 150 micron thickness, this just exists certain inconvenience.
A kind of application number disclosed simultaneously in the prior art be 200410058323.2, name is called the patent of " packaging material for battery case and with the battery case of its shaping ", it discloses a kind of lithium battery flexible packaging film, have skin, the aluminium foil sandwich layer that is formed by the heat-resistant resin film and the internal layer that is formed by the thermoplastic resin membrane, aluminium foil sandwich layer and internal layer are bonding as the adhesive composition of essential component in order to polyene footpath polyalcohol and polyfunctional isocyanate's curing agent.Dissolving and corrosion can occur due to Thermal Resistant Surface resin film electrolyte resistance not in above-mentioned packaging material when electrolyte touches the Thermal Resistant Surface resin film when producing, cause product rejection.Above-mentioned packaging material are due to internal layer thermoplastic resin membrane's mechanical bad adaptability, so when as secondary operations, packaging material being made the mold pressing type, the packaging material breakage occurs easily.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, and a kind of modified model lithium battery flexible packaging film that can electrolyte resistance pollutes and be fit to the high-power soft packaging lithium battery is provided.
For reaching above purpose, the utility model mainly by the following technical solutions:
A kind of modified model lithium battery flexible packaging film, it is provided with heat-resistant resin film layer, intermediate base layer and thermoplastic resin film layer from outside to inside successively, the intermediate base layer is connected with heat-resistant resin film layer and thermoplastic resin film layer viscosity respectively, described intermediate base layer is evoh layer, and respectively scribbles one deck corrosion-resistant coating at the outer surface of heat-resistant resin film layer and thermoplastic resin film layer.
A nearlyer step, described heat-resistant resin film layer is the polyamide film layer.
A nearlyer step, described thermoplastic resin film layer is cast polypropylene film or co-extrusion polypropylene film.
A nearlyer step, described corrosion-resistant coating is fluorinated polyethylene resin, Tissuemat E, fluorinated polypropylene resin, polypropylene wax, polyorganosiloxane resin, the uncommon resin of acrylic acid, atoleine, mylar, oleamide, erucyl amide or fatty acid ester.
A nearlyer step, the thickness of described heat-resistant resin film layer is 15 ~ 75 microns.
A nearlyer step, the thickness of described evoh layer is 5 ~ 50 microns.
A nearlyer step, the thickness of described thermoplastic resin film layer is 20 ~ 80 microns.
A nearlyer step, the thickness of described corrosion-resistant coating is 5 ~ 25 microns.
the beneficial effects of the utility model are: due to the utility model take ethene-ethenol copolymer layer as the intermediate base layer, ethene-ethenol copolymer fault rupture percentage elongation is high and have superior high-barrier and a deep-draw processability, simultaneously, by multi-layer co-extruded mode with the heat-resistant resin film layer, the disposable film forming of intermediate base layer and thermoplastic resin film layer, be connected firmly between multilayer, closely, through cold stamping shaped, can keep certain shape, can effectively intercept the infiltration of electrolyte, the elongation that it is superior, tensile strength and deep drawability can be made and surpass the high-power soft packaging lithium battery of 20 millimeters, and the outer surface at heat-resistant resin film layer of the present utility model and thermoplastic resin film layer respectively scribbles one deck corrosion-resistant coating, this corrosion-resistant coating adopts dip-coating, spraying, the intaglio plate coating, the modes such as Electrostatic Absorption or three rollers reverse coating are coated with, outer surface at heat-resistant resin film layer and thermoplastic resin film layer forms layer protective layer, dissolving and corrosion occur in the time of can avoiding electrolyte directly to touch the Thermal Resistant Surface resin thin film layer, simultaneously when as secondary operations, packaging material being made the mold pressing type, the coefficient of friction of the mould when reducing mold pressing and internal layer thermoplastic resin film layer, improve the mechanical adaptability of packaging film, avoid packaging material damaged.
Description of drawings
Fig. 1 is the structural representation of a kind of modified model lithium battery flexible packaging film of the utility model.
Embodiment
As shown in Figure 1, a kind of modified model lithium battery flexible packaging film, it is provided with heat-resistant resin film layer 2, intermediate base layer 1 and thermoplastic resin film layer 3 from outside to inside successively, intermediate base layer 1 is connected with heat-resistant resin film layer 2 and thermoplastic resin film layer 3 viscosity respectively, described intermediate base layer 1 is evoh layer, and respectively scribbles one deck corrosion-resistant coating 4 at the outer surface of heat-resistant resin film layer 2 and thermoplastic resin film layer 3.due to the utility model take ethene-ethenol copolymer layer as the intermediate base layer, ethene-ethenol copolymer fault rupture percentage elongation is high and have superior high-barrier and a deep-draw processability, simultaneously, by multi-layer co-extruded mode with heat-resistant resin film layer 2, intermediate base layer 1 and the disposable film forming of thermoplastic resin film layer 3, be connected firmly between multilayer, closely, through cold stamping shaped, can keep certain shape, can effectively intercept the infiltration of electrolyte, the elongation that it is superior, tensile strength and deep drawability can be made and surpass the high-power soft packaging lithium battery of 20 millimeters, and the outer surface at heat-resistant resin film layer 2 of the present utility model and thermoplastic resin film layer 3 respectively scribbles one deck corrosion-resistant coating 4, this corrosion-resistant coating 4 adopts dip-coating, spraying, the intaglio plate coating, the modes such as Electrostatic Absorption or three rollers reverse coating are coated with, outer surface at heat-resistant resin film layer 2 and thermoplastic resin film layer 3 forms layer protective layer, dissolving and corrosion occur in the time of can avoiding electrolyte directly to touch Thermal Resistant Surface resin thin film layer 2, simultaneously when as secondary operations, packaging material being made the mold pressing type, the coefficient of friction of the mould when reducing mold pressing and internal layer thermoplastic resin film layer 3, improve the mechanical adaptability of packaging film, avoid packaging material damaged.
Described heat-resistant resin film layer 2 is the polyamide film layer.
Described thermoplastic resin film layer 3 is cast polypropylene film or co-extrusion polypropylene film.
Described corrosion-resistant coating 4 is fluorinated polyethylene resin, Tissuemat E, fluorinated polypropylene resin, polypropylene wax, polyorganosiloxane resin, the uncommon resin of acrylic acid, atoleine, mylar, oleamide, erucyl amide or fatty acid ester.
The thickness of described heat-resistant resin film layer 2 is 15 microns, and the thickness of evoh layer 1 is 5 microns, and the thickness 3 of thermoplastic resin film layer is 20 microns, and the thickness of corrosion-resistant coating 4 is 5 microns.
Concrete, its manufacturing process is: first that evoh layer and heat-resistant resin film layer 2 is compound by the bonding agent dry type, the thickness of heat-resistant resin film layer 2 is 15 microns, the thickness of evoh layer 1 is 5 microns, opposite side and the thermoplastic resin film layer 3 of evoh layer is compound by the bonding agent dry type, the thickness 3 of thermoplastic resin film layer is 20 microns, at the compound one deck corrosion-resistant coating 4 of outer surface difference dry type of heat-resistant resin film layer 2 and thermoplastic resin film layer 3, the thickness of corrosion-resistant coating 4 is 5 microns.
By experiment, the thickness of choosing described heat-resistant resin film layer 2 is 45 microns, the thickness of evoh layer 1 is that 30 microns, the thickness 4 of described corrosion-resistant coating are that 7.5 microns, the thickness of described thermoplastic resin film layer 3 are 30 microns, each layer co-extrusion film forming, the gross thickness of this co-extrusion film is 120 microns, with the deep-draw moulding on aluminum plastic film forming machine of the present embodiment co-extrusion film, the deep-draw degree of depth is 100 millimeters, and after the test moulding, the physical and mechanical properties of this co-extrusion film strengthens greatly.
Specific embodiment 2.
The present embodiment is substantially identical with the technical characteristics of specific embodiment 1, its main distinction is: the thickness of described heat-resistant resin film layer 2 is 45 microns, the thickness of evoh layer 1 is 27 microns, the thickness 3 of thermoplastic resin film layer is 50 microns, and the thickness of corrosion-resistant coating 4 is 15 microns.
concrete, its manufacturing process is: first that evoh layer and heat-resistant resin film layer 2 is compound by the bonding agent dry type, the thickness of heat-resistant resin film layer 2 is 45 microns, the thickness of evoh layer 1 is 27 microns, opposite side and the thermoplastic resin film layer 3 of evoh layer is compound by the bonding agent dry type, the thickness 3 of thermoplastic resin film layer is 50 microns, the compound one deck corrosion-resistant coating 4 of outer surface difference dry type at heat-resistant resin film layer 2 and thermoplastic resin film layer 3, the thickness of corrosion-resistant coating 4 is 15 microns.
The present embodiment is substantially identical with the technical characteristics of specific embodiment 1, its main distinction is: the thickness of described heat-resistant resin film layer 2 is 75 microns, the thickness of evoh layer 1 is 50 microns, the thickness 3 of thermoplastic resin film layer is 80 microns, and the thickness of corrosion-resistant coating 4 is 25 microns.
concrete, its manufacturing process is: first that evoh layer and heat-resistant resin film layer 2 is compound by the bonding agent dry type, the thickness of heat-resistant resin film layer 2 is 75 microns, the thickness of evoh layer 1 is 50 microns, opposite side and the thermoplastic resin film layer 3 of evoh layer is compound by the bonding agent dry type, the thickness 3 of thermoplastic resin film layer is 80 microns, the compound one deck corrosion-resistant coating 4 of outer surface difference dry type at heat-resistant resin film layer 2 and thermoplastic resin film layer 3, the thickness of corrosion-resistant coating 4 is 25 microns.
The above execution mode, it is better embodiment of the present utility model, be not to limit the utility model practical range, therefore all equivalences of doing according to the described structure of the utility model claim, feature and principle change or modify, and all should be included in the utility model patent claim.
Claims (8)
1. modified model lithium battery flexible packaging film, it is provided with heat-resistant resin film layer, intermediate base layer and thermoplastic resin film layer from outside to inside successively, the intermediate base layer is connected with heat-resistant resin film layer and thermoplastic resin film layer viscosity respectively, it is characterized in that, described intermediate base layer is evoh layer, and respectively scribbles one deck corrosion-resistant coating at the outer surface of heat-resistant resin film layer and thermoplastic resin film layer.
2. a kind of modified model lithium battery flexible packaging film according to claim 1, is characterized in that, described heat-resistant resin film layer is the polyamide film layer.
3. a kind of modified model lithium battery flexible packaging film according to claim 1, is characterized in that, described thermoplastic resin film layer is cast polypropylene film or co-extrusion polypropylene film.
4. a kind of modified model lithium battery flexible packaging film according to claim 1, it is characterized in that, described corrosion-resistant coating is fluorinated polyethylene resin, Tissuemat E, fluorinated polypropylene resin, polypropylene wax, polyorganosiloxane resin, the uncommon resin of acrylic acid, atoleine, mylar, oleamide, erucyl amide or fatty acid ester.
5. a kind of modified model lithium battery flexible packaging film according to claim 1, is characterized in that, the thickness of described heat-resistant resin film layer is 15 ~ 75 microns.
6. a kind of modified model lithium battery flexible packaging film according to claim 1, is characterized in that, the thickness of described evoh layer is 5 ~ 50 microns.
7. a kind of modified model lithium battery flexible packaging film according to claim 1, is characterized in that, the thickness of described thermoplastic resin film layer is 20 ~ 80 microns.
8. a kind of modified model lithium battery flexible packaging film according to claim 1, is characterized in that, the thickness of described corrosion-resistant coating is 5 ~ 25 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012206392402U CN202996917U (en) | 2012-11-28 | 2012-11-28 | Improved type lithium battery flexible packaging film |
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| CN2012206392402U CN202996917U (en) | 2012-11-28 | 2012-11-28 | Improved type lithium battery flexible packaging film |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103213364A (en) * | 2013-03-28 | 2013-07-24 | 江苏中金玛泰医药包装有限公司 | Composite membrane for all-plastic lithium battery |
| CN104485430A (en) * | 2014-12-11 | 2015-04-01 | 乐凯胶片股份有限公司 | Soft package membrane for lithium battery |
| CN106654073A (en) * | 2016-12-21 | 2017-05-10 | 天津力神电池股份有限公司 | Battery packaging film and manufacturing method thereof and used soft package lithium-ion battery |
| CN109461848A (en) * | 2018-09-18 | 2019-03-12 | 惠州亿纬锂能股份有限公司 | Lithium ion battery flexible packaging film and preparation method thereof |
| CN109817851A (en) * | 2018-12-28 | 2019-05-28 | 新纶复合材料科技（常州）有限公司 | A kind of composite plastic film |
| EP3496178A4 (en) * | 2016-08-05 | 2020-03-25 | Dai Nippon Printing Co., Ltd. | Battery packaging material and battery |
| CN111867797A (en) * | 2017-12-15 | 2020-10-30 | 西部制药服务有限公司 | Smooth film laminated elastomeric articles |
| CN112757669A (en) * | 2020-12-24 | 2021-05-07 | 界首市天鸿新材料股份有限公司 | Processing method of flexible packaging film of power lithium battery |
| CN113782880A (en) * | 2020-06-05 | 2021-12-10 | 上海紫江新材料科技股份有限公司 | Corrosion-resistant lithium battery aluminum plastic film and preparation method thereof |
-
2012
- 2012-11-28 CN CN2012206392402U patent/CN202996917U/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103213364B (en) * | 2013-03-28 | 2016-01-13 | 江苏中金玛泰医药包装有限公司 | Composite membrane for all-plastic lithium battery |
| CN103213364A (en) * | 2013-03-28 | 2013-07-24 | 江苏中金玛泰医药包装有限公司 | Composite membrane for all-plastic lithium battery |
| CN104485430A (en) * | 2014-12-11 | 2015-04-01 | 乐凯胶片股份有限公司 | Soft package membrane for lithium battery |
| EP3496178A4 (en) * | 2016-08-05 | 2020-03-25 | Dai Nippon Printing Co., Ltd. | Battery packaging material and battery |
| US10985419B2 (en) | 2016-08-05 | 2021-04-20 | Dai Nippon Printing Co., Ltd. | Battery packaging material and battery |
| CN106654073A (en) * | 2016-12-21 | 2017-05-10 | 天津力神电池股份有限公司 | Battery packaging film and manufacturing method thereof and used soft package lithium-ion battery |
| CN111867797A (en) * | 2017-12-15 | 2020-10-30 | 西部制药服务有限公司 | Smooth film laminated elastomeric articles |
| US11325367B2 (en) | 2017-12-15 | 2022-05-10 | West Pharmaceutical Services, Inc. | Smooth film laminated elastomer articles |
| CN111867797B (en) * | 2017-12-15 | 2022-05-17 | 西部制药服务有限公司 | Smooth film laminated elastomeric articles |
| US11945204B2 (en) | 2017-12-15 | 2024-04-02 | West Pharmaceutical Services, Inc. | Smooth film laminated elastomer articles |
| CN109461848A (en) * | 2018-09-18 | 2019-03-12 | 惠州亿纬锂能股份有限公司 | Lithium ion battery flexible packaging film and preparation method thereof |
| CN109817851A (en) * | 2018-12-28 | 2019-05-28 | 新纶复合材料科技（常州）有限公司 | A kind of composite plastic film |
| CN113782880A (en) * | 2020-06-05 | 2021-12-10 | 上海紫江新材料科技股份有限公司 | Corrosion-resistant lithium battery aluminum plastic film and preparation method thereof |
| CN112757669A (en) * | 2020-12-24 | 2021-05-07 | 界首市天鸿新材料股份有限公司 | Processing method of flexible packaging film of power lithium battery |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 410600 No. 020 Jinshui West Road, Ningxiang High-tech Industrial Park, Changsha City, Hunan Province Patentee after: HUNAN XINNENG NEW MATERIAL CO.,LTD. Address before: 523770 Dongguan Xincun Community, Wanjiang District, Dongguan City, Guangdong Province, Old Ningji Industrial Zone, Dongguan Xinneng New Materials Co., Ltd. Patentee before: DONGGUAN XINNENG NEW MATERIALS Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130612 |
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| CX01 | Expiry of patent term |