CN104253248A - High-plasticity lithium battery soft package film and preparation method thereof - Google Patents
High-plasticity lithium battery soft package film and preparation method thereof Download PDFInfo
- Publication number
- CN104253248A CN104253248A CN201310255617.3A CN201310255617A CN104253248A CN 104253248 A CN104253248 A CN 104253248A CN 201310255617 A CN201310255617 A CN 201310255617A CN 104253248 A CN104253248 A CN 104253248A
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- China
- Prior art keywords
- layer
- lithium battery
- plasticity
- battery soft
- soft package
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Classifications
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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
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- 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
- B32B15/082—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 vinyl resins; comprising acrylic resins
-
- 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
- B32B15/09—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 polyesters
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Laminated Bodies (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to a high-plasticity lithium battery soft package film and a preparation method thereof. The high-plasticity lithium battery soft package film comprises an aluminum foil layer, wherein a PVDF (Polyvinylidene Fluoride) film layer is compounded on the upper surface of the aluminum foil layer through a weather-resistant glue layer; and an ordinary PET (Polyethylene Terephthalate) film layer is compounded on the lower surface of the aluminum foil layer through an adhesive layer. According to the high-plasticity lithium battery soft package film disclosed by the invention, the PVDF film layer and the PET film layer are compounded on the two surfaces of the aluminum foil layer by adopting a thermal compounding process, so that the high-plasticity lithium battery soft package film is small in overall thickness, is light, and has high ductility; the modified acid and alkali resistant PET film is taken as an inner layer, so that excellent heat sealing performance, excellent peeling strength and excellent chemical resistance are provided for a lithium battery, and an aluminum foil is effectively protected from being corroded by electrolyte; the PVDF film layer is taken as an outer layer, so that the aluminum foil is protected from being damaged by external hard objects and the like; and the high-plasticity lithium battery soft package film disclosed by the invention can be made into lithium battery shells of various sizes and shapes through a cold press molding process, so that the application range of the high-plasticity lithium battery soft package film is expanded greatly.
Description
Technical field
The present invention relates to a kind of high-ductility lithium battery Soft Roll film and preparation method thereof.
Background technology
Lithium ion battery is new generation of green, high-effect battery, there is the features such as voltage is high, energy density large, good cycle, self discharge is little, memory-less effect, working range are wide, now be widely used in mobile communication, notebook computer, digital camera, video camera, portable instrument, electric vehicle (electric automobile, electric bicycle etc.), it has very bright application prospect in green traffic trip, portable set, energy-storage battery etc.In recent years, the production capacity of global lithium battery is in growth at full speed, and application constantly expands, and it has become 21st century to national economy and the significant new high-tech product of people's lives.
Just because of lithium ion battery is in the extensive use in the field such as portable set, the vehicles, this just requires that lithium battery should the future development that improves constantly of more and more lighter, the fail safe of, weight more and more less towards volume.But traditional lithium battery be with the materials such as metallic iron, aluminium, copper become cylindricality through mould punching, the difform electrolyte such as square takes up container, and then makes lithium battery.Because of the shortcoming that the quality of metal shell own is large, can not meet the development trend of lithium battery lighting, again because of its poor ductility, the problem such as not corrosion-resistant, make lithium battery be impacted or fever expansion time, the effect released energy can not be played, also just considerably increase the risk that lithium battery is blasted, there is potential safety hazard.And the structure that the lithium battery of market use is CPP+PA+ aluminium foil.Because CPP easily scratches, PA flattens the problems such as ability, and associated production technology is monopolized by overseas enterprise always.The Soft Roll film of domestic Li electricity enterprise all depends on import, and this causes Li electricity enterprise manufacturing cost high, and procurement cycle is long, and right-safeguarding is difficult, and materials demand is without problems such as guarantees.This is also for a long time as the principal element of domestic lithium electricity enterprise development.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of high-ductility lithium battery Soft Roll film and preparation method thereof, obtained high-ductility lithium battery Soft Roll film has strong, the good plasticity of ultra-thin, lightweight, corrosion resistance, manufactures the advantages such as convenient.
High-ductility lithium battery Soft Roll film of the present invention, comprise aluminium foil layer, the upper surface of described aluminium foil layer is compounded with PVDF thin film layer by weatherability glue layer, and the lower surface of aluminium foil layer is compounded with PET film layer by adhering agent layer.
High-ductility lithium battery Soft Roll film of the present invention, the thickness of described aluminium foil layer is 0.04mm, and the thickness of adhering agent layer is 0.005mm, and the thickness of PVDF thin film layer is 0.025mm, and the thickness of PET film layer is 0.03mm.
The preparation method of high-ductility lithium battery Soft Roll film of the present invention, comprises the following steps:
1) carry out gluing after PVDF thin film layer being carried out surface corona process, the solid content of glue furnishing about 30%, gluing entity is 0.005mm thickness;
2) after glue solvent volatilization, under the condition of 95 DEG C, PVDF thin film layer and aluminium foil layer heat are combined with each other, form two layer composite structure;
3) PET film layer is carried out gluing after Corona Surface Treatment, the solid content of glue furnishing about 30%, gluing entity is 0.005mm thickness, is combined with each other, obtains high-ductility lithium battery Soft Roll film after solvent evaporates with another surface of aluminium foil layer heat under the condition of 95 DEG C.
Compared with prior art beneficial effect of the present invention is: high-ductility lithium battery Soft Roll film of the present invention adopts hot composition process PVDF thin film layer and PET film layer to be compounded on two surfaces of aluminium foil layer, and integral thickness is thin, lightweight, and ductility is good; Modification acid and alkali-resistance PET film is as internal layer, and for lithium battery provides good heat sealability, good peel strength and chemical-resistant characteristic, effective protection aluminium foil is not by electrolytic corrosion; Outer employing PVDF thin film layer, protection aluminium foil is not by damages such as extraneous hard object; High-ductility lithium battery Soft Roll film of the present invention can be made into the li battery shell of all size and shape by cold pressing forming process, this just substantially increases the range of application widely of this invention.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of high-ductility lithium battery Soft Roll film described in the embodiment of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
As shown in Figure 1, a kind of high-ductility lithium battery Soft Roll film, comprise aluminium foil layer 1, the upper surface of described aluminium foil layer 1 is compounded with PVDF thin film layer 2 by weatherability glue layer, and the lower surface of aluminium foil layer 1 is compounded with PET film layer 3 by adhering agent layer.
High-ductility lithium battery Soft Roll film of the present invention, the thickness of described aluminium foil layer 1 is 0.04mm, and the thickness of adhering agent layer is 0.005mm, and the thickness of PVDF thin film layer 2 is 0.025mm, and the thickness of PET film layer 3 is 0.03mm.
The preparation method of high-ductility lithium battery Soft Roll film of the present invention, comprises the following steps:
1) carry out gluing, the solid content of glue furnishing about 30% after PVDF thin film layer 2 being carried out surface corona process, gluing entity is 0.005mm thickness;
2) after glue solvent volatilization, under the condition of 95 DEG C, PVDF thin film layer 2 and aluminium foil layer 1 heat are combined with each other, form two layer composite structure;
3) PET film layer 3 is carried out gluing after Corona Surface Treatment, the solid content of glue furnishing about 30%, gluing entity is 0.005mm thickness, is combined with each other, obtains high-ductility lithium battery Soft Roll film after solvent evaporates with another surface of aluminium foil layer 1 heat under the condition of 95 DEG C.
High-ductility lithium battery Soft Roll film of the present invention adopts hot composition process PVDF thin film layer and PET film layer to be compounded on two surfaces of aluminium foil layer, and integral thickness is thin, lightweight, and ductility is good; Modification acid and alkali-resistance PET film is as internal layer, and for lithium battery provides good heat sealability, good peel strength and chemical-resistant characteristic, effective protection aluminium foil is not by electrolytic corrosion; Outer employing PVDF thin film layer, protection aluminium foil is not by damages such as extraneous hard object; High-ductility lithium battery Soft Roll film of the present invention can be made into the li battery shell of all size and shape by cold pressing forming process, this just substantially increases the range of application widely of this invention.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvement and modification, these improve and modification also should be considered as protection scope of the present invention.
Claims (3)
1. a high-ductility lithium battery Soft Roll film, comprises aluminium foil layer, it is characterized in that: the upper surface of described aluminium foil layer is compounded with PVDF thin film layer by weatherability glue layer, and the lower surface of aluminium foil layer is compounded with PET film layer by adhering agent layer.
2. high-ductility lithium battery Soft Roll film according to claim 1, it is characterized in that: the thickness of described aluminium foil layer is 0.04mm, the thickness of adhering agent layer is 0.005mm, and the thickness of PVDF thin film layer is 0.025mm, and the thickness of PET film layer is 0.03mm.
3. the preparation method of high-ductility lithium battery Soft Roll film according to claim 1, is characterized in that, comprise the following steps:
1) carry out gluing after PVDF thin film layer being carried out surface corona process, the solid content of glue furnishing about 30%, gluing entity is 0.005mm thickness;
2) after glue solvent volatilization, under the condition of 95 DEG C, PVDF thin film layer and aluminium foil layer heat are combined with each other, form two layer composite structure;
3) PET film layer is carried out gluing after Corona Surface Treatment, the solid content of glue furnishing about 30%, gluing entity is 0.005mm thickness, is combined with each other, obtains high-ductility lithium battery Soft Roll film after solvent evaporates with another surface of aluminium foil layer heat under the condition of 95 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310255617.3A CN104253248A (en) | 2013-06-25 | 2013-06-25 | High-plasticity lithium battery soft package film and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310255617.3A CN104253248A (en) | 2013-06-25 | 2013-06-25 | High-plasticity lithium battery soft package film and preparation method thereof |
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| Publication Number | Publication Date |
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| CN104253248A true CN104253248A (en) | 2014-12-31 |
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| CN201310255617.3A Pending CN104253248A (en) | 2013-06-25 | 2013-06-25 | High-plasticity lithium battery soft package film and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108598552A (en) * | 2018-04-04 | 2018-09-28 | 徐雄剑 | A kind of lithium battery encapsulation composite membrane and preparation method thereof for blocking water fire-retardant |
| CN108995228A (en) * | 2017-06-07 | 2018-12-14 | 东安生技实业股份有限公司 | For loading the manufacturing method of packing timber used in hair dye and with packaging bag made of the packing timber |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101485009A (en) * | 2006-07-14 | 2009-07-15 | Bps株式会社 | Method of making battery using as case with aluminium multilayered films |
| CN101997038A (en) * | 2009-08-19 | 2011-03-30 | 南京纳泉高科材料股份有限公司 | Solar battery back panel film and preparation method thereof |
| CN102602081A (en) * | 2012-03-16 | 2012-07-25 | 东莞市恒雅包装材料有限公司 | Anti-corrosion, anti-puncture and anti-short circuit melting through aluminum-plastic packaging film for lithium battery and manufacture method thereof |
-
2013
- 2013-06-25 CN CN201310255617.3A patent/CN104253248A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101485009A (en) * | 2006-07-14 | 2009-07-15 | Bps株式会社 | Method of making battery using as case with aluminium multilayered films |
| CN101997038A (en) * | 2009-08-19 | 2011-03-30 | 南京纳泉高科材料股份有限公司 | Solar battery back panel film and preparation method thereof |
| CN102602081A (en) * | 2012-03-16 | 2012-07-25 | 东莞市恒雅包装材料有限公司 | Anti-corrosion, anti-puncture and anti-short circuit melting through aluminum-plastic packaging film for lithium battery and manufacture method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108995228A (en) * | 2017-06-07 | 2018-12-14 | 东安生技实业股份有限公司 | For loading the manufacturing method of packing timber used in hair dye and with packaging bag made of the packing timber |
| CN108598552A (en) * | 2018-04-04 | 2018-09-28 | 徐雄剑 | A kind of lithium battery encapsulation composite membrane and preparation method thereof for blocking water fire-retardant |
| CN108598552B (en) * | 2018-04-04 | 2019-11-26 | 乐清市钜派企业管理咨询有限公司 | A kind of lithium battery encapsulation composite membrane and preparation method thereof for blocking water fire-retardant |
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| C53 | Correction of patent of invention or patent application | ||
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Address after: 336000 Yichun economic and Technological Development Zone, Jiangxi, Yichun, No. 32, No. Applicant after: CROWN ADVANCED MATERIAL CO., LTD. Address before: 336000 suitable business road, Yichun economic and Technological Development Zone, Jiangxi Applicant before: Mingguan Energy (Jiangxi) Co., Ltd. |
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Free format text: CORRECT: APPLICANT; FROM: CROWN ENERGY (JIANGXI) CO., LTD. TO: CROWN ADVANCED MATERIAL CO., LTD. |
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Application publication date: 20141231 |