CN201616459U - High-barrier corrosion-resistant compound packaging film for lithium batteries - Google Patents
High-barrier corrosion-resistant compound packaging film for lithium batteries Download PDFInfo
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- CN201616459U CN201616459U CN2010200031844U CN201020003184U CN201616459U CN 201616459 U CN201616459 U CN 201616459U CN 2010200031844 U CN2010200031844 U CN 2010200031844U CN 201020003184 U CN201020003184 U CN 201020003184U CN 201616459 U CN201616459 U CN 201616459U
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- lithium batteries
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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 high-barrier corrosion-resistant compound packaging film for lithium batteries. The compound packaging film comprises an outer layer, a middle layer and a heat sealing layer which are arranged from the inside to the outside in sequence, barrier layers are arranged between the outer layer and the middle layer and between the middle layer and the heat sealing layer, and the barrier layers are aluminium foils with the thickness ranging from 7 microns to 15 microns. Compared with the prior art, the utility model fully meets the packaging standards of the lithium batteries, has the advantages of high safety, good leak tightness, barrier property and corrosion prevention performance, light and handy volume and convenient use, is easy to transport and store and adapts to the development tendency of present battery packaging.
Description
Technical field
The utility model belongs to composite package film, belongs to the composite membrane that is used for lithium battery especially.
Background technology
Lithium ion battery is prospect a kind of secondary cell best, with fastest developing speed, can be used for fields such as mobile phone, digital camera, game machine, electronic equipment, electric automobile, space technology and national defense industry.The coming five years, the production scale of world's lithium ion battery industry estimate to maintain the steady growth about 8%, will reach 32.5 hundred million production scale by 2010.
Along with the atrophy gradually in ickel-cadmium cell market, the market of lithium ion battery will keep increasing fast in the coming years, and its market potential will be huger.With the battery of mobile phone is example, and according to statistics, mobile phone is 7.2 hundred million ones at sales volume in 2007, and sales volume in 2008 reaches 7.9 hundred million ones, estimates to reach 900,000,000 ones in 2009.Battery of mobile phone is running stores, its cycle life 300 to 500 times of guaranteeing, and the market of battery of mobile phone is not only huge but also steady in a long-term, and therefore relevant therewith lithium ion battery flexible packing material also has endurance and potentiality.
Lithium ion battery being applied in the portable electricity consuming products more and more widely, and safe, flexible, light and handy, inexpensive, thing U.S.A is the advantage of flexible packing lithium ion battery.
Safety: every with " " relevant product, safety problem is stood in the breach.Used materials such as LiFePO4, LiMn2O4, lithium hexafluoro phosphate in the lithium-ion battery electrolytes at present, inflammable and explosive shortcoming has been arranged.And re-using flexible package or plastics package, internal soundness hidden danger can show by the external packing distortion immediately, in case potential safety hazard takes place, can not explode, thereby the fail safe of battery is improved greatly.
Flexibly: the lithium ion battery of metal shell packing is too heavy, the cost height, and shape is restricted, and uses flexible package, has improved the flexibility of battery shape-designing greatly, the needs of better fit product.
Lightly: mention digital product, nouns such as " gently ", " approaching " are exactly to be difficult to around the index that must pass by.Flexible packing material is gently more many than aluminum hull or box hat packed weight.
Inexpensive: as to use flexible packing material to greatly reduce battery cost.
Thing U.S.: adopt the battery exterior design of flexible packing material flexible, made things convenient for product design, make that the battery profile is changeable, also can or reduce electric core thickness according to client's increase in demand.
Generally speaking, the development trend of flexible packing material is by the expansion of the development trend of polymer Li-ion battery and application thereof and determine.The development of polymer Li-ion has two trend: a trend is that battery develops to the direction of miniaturization, slimming; A kind of is to develop to big capacity and the high-power direction that discharges and recharges.The former requires required flexible packing material to develop to thinner, more pliable and tougher direction under the prerequisite that barrier guarantees; The barrier that the latter requires flexible packing material develops and develops to littler direction with the interactional degree of electrolyte to higher direction.These two kinds of development trends are to the selection of packaging material, to the requirement of packing complex technique, particularly higher to the requirement of packaging material structural design.
The lithium ion battery flexible packing material is as the important component part of lithium ion battery, the flexible packing material overwhelming majority who uses in the world uses Japan to produce at present, its barrier layer is generally to need to adopt extremely thick aluminium foil, and adopt the composite material of 4 to 7 layers of structure, cost is very high, also have complex manufacturing, not easy to operate, shortcomings such as fracture take place in thick aluminum foil easily.
The utility model content
Technical problem to be solved in the utility model provides the low high-blocking corrosion-resisting lithium battery composite packaging film of a kind of cost.
The technical scheme of the utility model technical solution problem is: high-blocking corrosion-resisting lithium battery composite packaging film, described composite package film is followed successively by skin, intermediate layer, hot sealing layer from outside to inside, be provided with barrier layer between between skin and the intermediate layer and intermediate layer and hot sealing layer, described barrier layer is that thickness is 7-15 μ m aluminium foil.
Described hot sealing layer is composite polyethylene (PE) layer.
Described composite polyethylene is followed successively by composite bed, sandwich layer, seal from outside to inside.
Composite bed of the present utility model, sandwich layer mainly take blocking effect, and seal also has good heat sealability when intercepting.
Described intermediate layer material is nylon (NY).
Described cladding material is polyethylene terephthalate (PET).
Characteristics of the present utility model are as follows:
(1) skin: adopt the PET film, PET belongs to stress layer, and it has higher draw tensile strength, and its good transparency can fully represent the fineness of printing simultaneously.
(2) barrier layer: the battery composite membrane that the Japan that breaks traditions produces adopts the form of thick Al paper tinsel, adopt the compound form of two layers of thin Al paper tinsel, avoid aluminium foil phenomenons such as incident wrinkle, fracture, pin hole in the course of processing of single monolayer thick, reduced difficulty of processing and processing cost.The use of two-layer AL has simultaneously improved obstruct intensity greatly, has reduced because the electrolyte corrosion causes the possibility of layering, when ensureing barriering effect, has added twice protection barrier more.In addition, it can effectively prolong the packing content thing shelf-life to excellent in barrier property such as light, oxygen and steam.
(3) intermediate layer: selected NY for use, nylon is polyamide, has good obdurability, good tensile strength is arranged, percentage elongation and resistance to wear, and it is used in the intermediate layer, can improve the mechanical strength of product greatly, ensures the environmental suitability of product.
(4) internal layer: adopt compound PE film, good heat seal strength and mechanical strength can not only be arranged, also have good anti-corrosion effects.
The utility model compared with prior art, every index meets the packaging standard of lithium ion battery fully, safe, sealing, barrier and anti-corrosion performance are good, be easy to transportation and storage, volume is light and handy, and is easy to use, is suitable for current battery packages development trend.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the structural representation of the utility model hot sealing layer.
As shown in Figure 1, 2: 1 is that skin, 2 is that aluminium foil, 3 is that intermediate layer, 4 is that hot sealing layer, 5 is that composite bed, 6 is that sandwich layer, 7 is a seal.
Embodiment
Below in conjunction with embodiment the utility model is done detailed explanation.
Embodiment 1:
As shown in Figure 1, 2:
High-blocking corrosion-resisting lithium battery composite packaging film, described composite package film is followed successively by the skin 1 of polyethylene terephthalate (PET), the intermediate layer 3 of nylon (NY), the hot sealing layer 4 of composite polyethylene (PE) from outside to inside, be provided with barrier layer 2 between skin 1 and the intermediate layer 3 and between intermediate layer 3 and the hot sealing layer 4, described barrier layer 2 is an aluminium foil.Described composite polyethylene is followed successively by composite bed 4, sandwich layer 5, seal 6 from outside to inside.The concrete structure of made packaging film is: 15PET/7AL/20NY/14AL/150PE.
Claims (4)
1. high-blocking corrosion-resisting lithium battery composite packaging film, it is characterized in that: described composite package film is followed successively by skin, intermediate layer, hot sealing layer from outside to inside, be provided with barrier layer between between skin and the intermediate layer and intermediate layer and hot sealing layer, described barrier layer is an aluminium foil.
2. a kind of high-blocking corrosion-resisting lithium battery composite packaging film according to claim 1 is characterized in that: described hot sealing layer is the composite polyethylene layer.
3. a kind of high-blocking corrosion-resisting lithium battery composite packaging film according to claim 1 is characterized in that: described composite polyethylene is followed successively by composite bed, sandwich layer, seal from outside to inside.
4. a kind of high-blocking corrosion-resisting lithium battery composite packaging film according to claim 1 is characterized in that: the material in described intermediate layer is a nylon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200031844U CN201616459U (en) | 2010-01-13 | 2010-01-13 | High-barrier corrosion-resistant compound packaging film for lithium batteries |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200031844U CN201616459U (en) | 2010-01-13 | 2010-01-13 | High-barrier corrosion-resistant compound packaging film for lithium batteries |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201616459U true CN201616459U (en) | 2010-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200031844U Expired - Lifetime CN201616459U (en) | 2010-01-13 | 2010-01-13 | High-barrier corrosion-resistant compound packaging film for lithium batteries |
Country Status (1)
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| CN (1) | CN201616459U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104064697A (en) * | 2014-07-16 | 2014-09-24 | 奇瑞汽车股份有限公司 | Composite lithium battery packaging film material and preparation method thereof |
| CN113424355A (en) * | 2020-09-25 | 2021-09-21 | 宁德新能源科技有限公司 | Packaging film and battery cell with same |
-
2010
- 2010-01-13 CN CN2010200031844U patent/CN201616459U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102602597B (en) * | 2012-03-16 | 2016-04-13 | 菏泽天信新材料科技有限公司 | Lithium ion battery plastic-aluminum packaging film and manufacture method thereof |
| CN104064697A (en) * | 2014-07-16 | 2014-09-24 | 奇瑞汽车股份有限公司 | Composite lithium battery packaging film material and preparation method thereof |
| CN113424355A (en) * | 2020-09-25 | 2021-09-21 | 宁德新能源科技有限公司 | Packaging film and battery cell with same |
| CN113424355B (en) * | 2020-09-25 | 2024-03-19 | 宁德新能源科技有限公司 | Packaging film and battery cell with same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101027 |