CN103456901A - Battery shell structure with shielding effect - Google Patents
Battery shell structure with shielding effect Download PDFInfo
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- CN103456901A CN103456901A CN201210181774XA CN201210181774A CN103456901A CN 103456901 A CN103456901 A CN 103456901A CN 201210181774X A CN201210181774X A CN 201210181774XA CN 201210181774 A CN201210181774 A CN 201210181774A CN 103456901 A CN103456901 A CN 103456901A
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- layer
- battery shell
- screening effect
- adhesion agent
- layer structure
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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 invention discloses a battery shell structure with a shielding effect. The battery shell structure with the shielding effect comprises an air-resisting layer, a first adhesion agent layer, a second adhesion agent layer, a heat packaging layer and an outer protective layer, wherein the first adhesion agent layer is formed on the outside surface of the air-resisting layer, the second adhesion agent layer is formed on the internal surface of the air-resisting layer, the heat packaging layer is formed on the second adhesion agent layer which is sandwiched between the air-resisting layer and the heat packaging layer, the heat packaging layer is coated outside the battery, the outer protective layer is formed on the first adhesion agent layer which is sandwiched between the air-resisting layer and the outer protective layer, and the first adhesion agent layer and the air-resisting layer are shielded by the outer protective layer, the battery shell structure with the shielding effect, provided by the invention, is capable of obstructing hydrosphere effectively, and has an excellent shielding effect and a heat conduction effect.
Description
Technical field
The relevant a kind of battery shell layer structure of the present invention, be specifically related to a kind of battery shell layer structure with screening effect.
Background technology
Lithium rechargeable battery is by widely as the power supply of notebook computer, mobile phone, digital camera and electric automobile, and the battery case that is generally used for accommodating battery is metal shell.But along with the prosperity of above-mentioned electronic installation with universal, its lightweight, slimming also comes into one's own thereupon, the battery used also alleviates its weight as far as possible, and dwindles taking up room of battery, and pursues lightweight and slimming simultaneously.
In order to reach above-mentioned requirements, existing technology is that polyamide film is enveloped to aluminium foil layer to form battery shell layer structure.But in using this based resin film as battery case, generally adopt transparent membrane, do not have the function of covering pattern, and, without the capacity of heat transmission, not yet meet the requirement of industry.
Therefore, still need a kind of battery shell layer structure with screening effect, excellent heat conducting effect.
Summary of the invention
In order to overcome above-mentioned defect, the invention provides a kind of battery shell layer structure with screening effect, this battery shell layer structure with screening effect has excellent screening effect and heat-conducting effect, and simple in structure, easy to implement.
The present invention for the technical scheme that solves its technical problem and adopt is:
A kind of battery shell layer structure with screening effect, there is gas barrier layer, the first adhesion agent layer, the second adhesion agent layer, heat-seal layer and external protection, described gas barrier layer has relative inner surface and outer surface, described the first adhesion agent layer is formed at the outer surface of described gas barrier layer, described the second adhesion agent layer is formed at the inner surface of described gas barrier layer, described heat-seal layer is formed at described the second adhesion agent layer, and described the second adhesion agent layer is folded between described gas barrier layer and described heat-seal layer, described heat-seal layer is coated on outside battery, described external protection is formed at described the first adhesion agent layer, and described the first adhesion agent layer is folded between described gas barrier layer and described external protection, described external protection covers described the first adhesion agent layer and described gas barrier layer.
Described external protection comprises base portion and is formed at the shielding film on described base portion, and described base portion is folded between described shielding film and described the first adhesion agent layer.
Described base portion is nylon membrane.
The thickness of described shielding film is 5 to 20 microns.
Described shielding film is black ink layer.
Described external protection is the black polymer layer that is dispersed with the polymer formation of black additive, and described black additive is at least one in material with carbon element and black colorant.
Described material with carbon element in described external protection is at least one in carbon dust, graphite, carbon fiber and carbon nanotube.
Described polymer is polyamide, polyester or pi.
By weight percentage, the black additive in described external protection accounts for 10% to 25 % of described polymer solids level.
Described the first adhesion agent layer also contains the black additive, and described black additive is at least one in material with carbon element and black colorant.
Described material with carbon element in described the first adhesion agent layer is at least one in carbon dust, graphite, carbon fiber and carbon nanotube.
By weight percentage, the described black additive in described the first adhesion agent layer accounts for 10% to 25 % of described the first adhesion agent layer solid content.
Described heat-seal layer is polyolefin polymer film or polyolefin co-polymer membrane.
Described gas barrier layer is metal level.
Described gas barrier layer is aluminium foil.
The thickness of described gas barrier layer is 30 to 50 microns.
The thickness of described heat-seal layer is 30 to 100 microns.
The thickness of described external protection is 10 to 50 microns.
The invention has the beneficial effects as follows: the battery shell layer structure with screening effect of the present invention is that material for example is arranged to core for the gas barrier layer of metal; to reach the purpose of effective obstruct aqueous vapor; in the inboard of gas barrier layer, the heat-seal layer is set; the heat-seal layer coats or contacts with electrolyte; at the arranged outside external protection of gas barrier layer, external protection mainly provides screening effect, thermal conductivity and weatherability.
The accompanying drawing explanation
The generalized section of the battery shell layer structure with screening effect that Fig. 1 is the embodiment of the present invention 1;
The generalized section of the battery shell layer structure with screening effect that Fig. 2 is the embodiment of the present invention 2;
The generalized section of the battery shell layer structure with screening effect that Fig. 3 is the embodiment of the present invention 3.
Embodiment
Embodiment 1: a kind of battery shell layer structure with screening effect, as shown in Figure 1, there is gas barrier layer 10, the first adhesion agent layer 11a, the second adhesion agent layer 11b, heat-seal layer 12 and opaque external protection 13, described gas barrier layer is metal material, described gas barrier layer has relative inner surface 10b and outer surface 10a, described the first adhesion agent layer is formed at the outer surface of described gas barrier layer, described the second adhesion agent layer is formed at the inner surface of described gas barrier layer, described heat-seal layer is formed at described the second adhesion agent layer, and described the second adhesion agent layer is folded between described gas barrier layer and described heat-seal layer, described heat-seal layer is coated on outside battery, described external protection is formed at described the first adhesion agent layer, and described the first adhesion agent layer is folded between described gas barrier layer and described external protection, described external protection covers described the first adhesion agent layer and described gas barrier layer, described external protection comprises base portion 13a and is formed at the shielding film 13b on described base portion, and described base portion is folded between described shielding film and described the first adhesion agent layer.
The preparation method of the battery shell layer structure with screening effect of the present embodiment is as follows: preparing a material is for example aluminium foil; and the gas barrier layer 10 that thickness is 30 to 50 microns, thereon, lower surface (outer surface, inner surface) 10a, 10b bind external protection 13 that thickness is 10 to 50 microns and the heat-seal layer 12 of 30 to 100 microns by material as the first adhesion agent layer 11a of epoxy resin or polyurethane and the second adhesion agent layer 11b.The thickness of this first adhesion agent layer 11a and the second adhesion agent layer 11b is 3 to 5 microns.As shown in Figure 1, be first to bind base portion 13a, then form shielding film 13b by the mode of coating or laminating, can obtain the battery shell layer structure of the present embodiment.
In this embodiment, base portion 13a can be for example polyamide film or polyester film (as polycarbonate film) or the pi membrane of lipoprotein of nylon.At this shielding film, 13b can be black ink, and thickness is 5 to 20 microns.This heat-seal layer 12 is polyolefin polymer or polyolefin copolymer film.For example, polyethylene or polypropylene, or the copolymer of polyethylene and/or polypropylene and other alkene, this heat-seal layer 12 also can be sour sex change polyolefin-based resins, for example the disclosed thermal bonding resin of I227693 Taiwan patent.
Embodiment 2: as shown in Figure 2; only the external protection structure is different for the battery shell layer structure with screening effect (as shown in Figure 1) of the battery shell layer structure with screening effect of the present embodiment 2 and embodiment 1; in the present embodiment, this external protection is the composite bed 13c of single layer structure.This composite bed 13c can be by by polymer and the black additive carries out blending and manufacture obtains, the black additive is at least one (black colorant can be black dyes, black toner and/or black pigment) in material with carbon element and black colorant, wherein, by weight percentage, the black additive accounts for this polymer solids level 10% to 25 %, and wherein material with carbon element is generally at least one in carbon dust, graphite, carbon fiber, carbon nanotube.In the present embodiment, the polymer of this composite bed 13c is selected from polyamide, polyester or pi, in the external protection in single layer structure, provides weatherability and covering property and thermal conductivity simultaneously.
Embodiment 3: as shown in Figure 3, the battery shell layer structure with screening effect of the present embodiment 3 is identical with the battery shell layer structure with screening effect (as shown in Figure 1) of embodiment 1, when external protection 13 ' adopts transparent base portion 13a ', the first following layer 11a ' can add material with carbon element, black pigment, in these several additives of black dyes and black toner at least one, carry out blending and manufacture obtains, wherein, by weight percentage, this additive accounts for solid content 10% to 25 % of contained solid, wherein, material with carbon element is generally carbon dust, graphite, at least one in carbon fiber and carbon nanotube.
Below will assess test to battery shell layer structure.
The material that embodiment is used is as shown in following:
Polypropylene: the curtain coating type polypropylene film of taking from the South Asia plastics
Epoxy resin: take from epoxy resin prepared by Asia electricity material
(AEM-V1)
Aluminium foil: take from Nippon Light Metal Co., Ltd (8079-O)
The transparent nylon film: but take from the You Niji biaxially oriented film
(EMBLEM?25)
Black carbon powder: take from Cabot Co.,Ltd (BLACK PEARLS 570)
The black nylon film: take from east beautiful, Ming Ketelun
Black ink: take from Toyo Ink (FDO NEW)
Use above-mentioned material, according to the structure of Fig. 1 and Fig. 2, each layer of condition of collocation table 1 tabular can produce the sample of embodiment 1 to 3.Wherein aluminium foil is gas barrier layer, and polypropylene is the heat-seal layer, uses epoxy resin as first and second adhesion agent layer.The external protection structure of each embodiment is as shown in following: embodiment 1 is used the black nylon film as base portion, then applies black ink; The composite bed that embodiment 2 is used nylon material to mix with black ink, be black nylon film (but taking from You Niji biaxially oriented film EMBLEM 25).In nylon monomer batching, add and account for approximately 10 to 25 %(weight of whole amount of resin solid content) black ink, then carry out nylon film and stretch and make; Embodiment 3 is used transparent nylon as base portion, then applies black ink, and the first solid is used black epoxy.In solid batching, add and account for approximately 10 to 25%(weight of whole amount of resin solid content) the black carbon material, then carry out the solid allotment.
Comparative example is to use transparent nylon as base portion, does not apply in addition the conventional batteries shell structurre of any shielding film.
Assessment method of testing and result to embodiment 1 to 3 below will be described:
One, heat conduction analysis test: use TechMax TPS500 coefficient of heat conduction instrument (hot disk) to carry out the heat conduction analysis test, cover two battery shell layers at the transmitter upper and lower surface, with two steel foils, that sample and transmitter is wherein sandwiched respectively again, and measured the heat conductivility of sample by transmitter, test sample of the present invention (embodiment 1 to 3) and the general conventional batteries shell structurre body (comparative example) that coincides, the coefficient of heat conduction outcome record recorded is in table 1.The coefficient of heat conduction of conventional batteries shell structurre is approximately 0.35 (W/ (mK)), can effectively increase capacity of heat transmission by the known battery shell layer structure of the present invention of table 1 data, the heat energy that battery itself is produced is directed at the external world, the injury with the cooling degree to battery itself.
Two, optical density (optical density, OD) is analyzed:
Use a minute luminometer (ColorQuest Xe Hunterlab) to be measured, prevailing value is higher, means that optical density (OD) (blackness) is higher, and its light transmission is poorer; Numerical value is lower, and optical density (OD) (blackness) is lower, and its light transmission better.Use Grossmeters (Novo Gloss
tW) measure glossiness, incidence angle is set as 60 °, and its numerical value is larger, represent that its intensity of reflected light is stronger, otherwise its numerical value is less, represents that its intensity of reflected light is more weak.The lightness that it is recorded and glossiness result are embedded in table 1.The OD value of conventional batteries shell structurre external protection part only 0.2 also can learn compared to the conventional batteries shell structurre that in optical density (OD) (OD value) is tested the present invention has good screening effect.
Three, processing and sealing property test:
Following commentary is estimated method and is tested, and result is embedded in to table 1.
1. press formability:
By the various battery case packages of embodiment 1 to 3, the battery case that is made into 110mm x 180mm is laminated, in not limitting the straight vertical line style metal mold of forming height, carries out drawing.Comparation and assessment according to the heavy degree of the formation of various battery case packaging material as formability.
The metal mold that uses is shaped as: long limit 60mm, minor face 45mm, recessed film circle pin R=1 to 2mm, punching flange R=1mm, mould flange R=1mm.
2. electrolyte resistance characteristic:
The various packaging material for battery case of above-mentioned comparative example and embodiment 1 to 3, in electrolyte (dimethyl carbonate and ethyl carbonate (1:1) and lithium salts), are then flooded to the intensity that coincides after seven days at normal temperatures.
The evaluation method series of press formability and electrolyte resistance characteristic is in table 2.
3. sealing evaluation:
Inject electrolyte (dimethyl carbonate and ethyl carbonate (1:1) and lithium salts) in the square shell formed at said method, after heat seal, shell is inverted, preserve 1 month at 60 ℃, confirm to have or not sealing.
4. water vapour permeability:
Filling electrolyte (dimethyl carbonate and ethyl carbonate (1:1) and lithium salts) in the square shell formed at said method, and be sealed under the environment of 60 ℃ of x90%RH (indoor humidity) and preserve seven days, with Ka Er-Fei Xiefa, measure the amount of moisture in electrolyte.
As shown in Table 1, battery shell layer structure of the present invention can be down to the aqueous vapor penetrance below 35ppm, has excellent anti-aqueous vapor effect, and it also has good press formability, electrolyte resistance and sealing, is suitable for the lithium battery flexible packaging material.
Table 1
Table 2
Above-mentioned specification and embodiment are only illustrative principle of the present invention and effect thereof, but not for limiting this creation.The scope of the present invention, should be as listed as claims.
Claims (18)
1. the battery shell layer structure with screening effect, it is characterized in that: there is gas barrier layer, the first adhesion agent layer, the second adhesion agent layer, heat-seal layer and external protection, described gas barrier layer has relative inner surface and outer surface, described the first adhesion agent layer is formed at the outer surface of described gas barrier layer, described the second adhesion agent layer is formed at the inner surface of described gas barrier layer, described heat-seal layer is formed at described the second adhesion agent layer, and described the second adhesion agent layer is folded between described gas barrier layer and described heat-seal layer, described heat-seal layer is coated on outside battery, described external protection is formed at described the first adhesion agent layer, and described the first adhesion agent layer is folded between described gas barrier layer and described external protection, described external protection covers described the first adhesion agent layer and described gas barrier layer.
2. the battery shell layer structure with screening effect as claimed in claim 1, it is characterized in that: described external protection comprises base portion and is formed at the shielding film on described base portion, and described base portion is folded between described shielding film and described the first adhesion agent layer.
3. the battery shell layer structure with screening effect as claimed in claim 2, it is characterized in that: described base portion is nylon membrane.
4. the battery shell layer structure with screening effect as claimed in claim 2, it is characterized in that: the thickness of described shielding film is 5 to 20 microns.
5. the battery shell layer structure with screening effect as claimed in claim 2, it is characterized in that: described shielding film is black ink layer.
6. the battery shell layer structure with screening effect as claimed in claim 1; it is characterized in that: described external protection is the black polymer layer that is dispersed with the polymer formation of black additive, and described black additive is at least one in material with carbon element and black colorant.
7. the battery shell layer structure with screening effect as claimed in claim 6, it is characterized in that: described material with carbon element is at least one in carbon dust, graphite, carbon fiber and carbon nanotube.
8. the battery shell layer structure with screening effect as claimed in claim 6, it is characterized in that: described polymer is polyamide, polyester or pi.
9. the battery shell layer structure with screening effect as claimed in claim 6, it is characterized in that: by weight percentage, described black additive accounts for 10% to 25 % of described polymer solids level.
10. the battery shell layer structure with screening effect as claimed in claim 1, it is characterized in that: described the first adhesion agent layer also contains the black additive, and described black additive is at least one in material with carbon element and black colorant.
11. have the battery shell layer structure of screening effect as claimed in claim 10, it is characterized in that: described material with carbon element is at least one in carbon dust, graphite, carbon fiber and carbon nanotube.
12. have the battery shell layer structure of screening effect as claimed in claim 10, it is characterized in that: by weight percentage, described black additive accounts for 10% to 25 % of described the first adhesion agent layer solid content.
13. have the battery shell layer structure of screening effect as claimed in claim 1, it is characterized in that: described heat-seal layer is polyolefin polymer film or polyolefin co-polymer membrane.
14. have the battery shell layer structure of screening effect as claimed in claim 1, it is characterized in that: described gas barrier layer is metal level.
15. have the battery shell layer structure of screening effect as claimed in claim 14, it is characterized in that: described gas barrier layer is aluminium foil.
16. have the battery shell layer structure of screening effect as claimed in claim 1, it is characterized in that: the thickness of described gas barrier layer is 30 to 50 microns.
17. have the battery shell layer structure of screening effect as claimed in claim 1, it is characterized in that: the thickness of described heat-seal layer is 30 to 100 microns.
18. have the battery shell layer structure of screening effect as claimed in claim 1, it is characterized in that: the thickness of described external protection is 10 to 50 microns.
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| CN201210181774XA CN103456901A (en) | 2012-06-05 | 2012-06-05 | Battery shell structure with shielding effect |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210181774XA CN103456901A (en) | 2012-06-05 | 2012-06-05 | Battery shell structure with shielding effect |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108928079A (en) * | 2017-05-27 | 2018-12-04 | 昆山雅森电子材料科技有限公司 | battery shell layer structure |
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| JP2009289533A (en) * | 2008-05-28 | 2009-12-10 | Dic Corp | Battery pack |
| JP2010092703A (en) * | 2008-10-08 | 2010-04-22 | Showa Denko Packaging Co Ltd | Packaging material for battery case, and case for battery |
| KR20110030871A (en) * | 2009-09-18 | 2011-03-24 | 율촌화학 주식회사 | Cell packing materials and preparation method thereof |
| CN102055009A (en) * | 2009-10-30 | 2011-05-11 | 索尼公司 | Nonaqueous electrolyte battery |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1314008A (en) * | 1999-04-08 | 2001-09-19 | 大日本印刷株式会社 | meterial for packaging cell, bag for packaging cell, and its production method |
| CN101589488A (en) * | 2007-01-31 | 2009-11-25 | 凸版印刷株式会社 | Packaging material for lithium battery and manufacture method thereof |
| JP2009289533A (en) * | 2008-05-28 | 2009-12-10 | Dic Corp | Battery pack |
| JP2010092703A (en) * | 2008-10-08 | 2010-04-22 | Showa Denko Packaging Co Ltd | Packaging material for battery case, and case for battery |
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| CN108928079A (en) * | 2017-05-27 | 2018-12-04 | 昆山雅森电子材料科技有限公司 | battery shell layer structure |
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