CN205790079U - Electrical storage device - Google Patents
Electrical storage device Download PDFInfo
- Publication number
- CN205790079U CN205790079U CN201620368803.7U CN201620368803U CN205790079U CN 205790079 U CN205790079 U CN 205790079U CN 201620368803 U CN201620368803 U CN 201620368803U CN 205790079 U CN205790079 U CN 205790079U
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- CN
- China
- Prior art keywords
- external packing
- electrical storage
- storage device
- main body
- apparatus main
- Prior art date
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Links
- 238000003860 storage Methods 0.000 title claims abstract description 48
- 238000012856 packing Methods 0.000 claims abstract description 86
- 229910052751 metal Inorganic materials 0.000 claims abstract description 83
- 239000002184 metal Substances 0.000 claims abstract description 83
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- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 3
- 230000001678 irradiating effect Effects 0.000 description 3
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- 239000004925 Acrylic resin Substances 0.000 description 2
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- 229920001661 Chitosan Polymers 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 2
- QXNVGIXVLWOKEQ-UHFFFAOYSA-N Disodium Chemical class [Na][Na] QXNVGIXVLWOKEQ-UHFFFAOYSA-N 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
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- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- BFGKITSFLPAWGI-UHFFFAOYSA-N chromium(3+) Chemical class [Cr+3] BFGKITSFLPAWGI-UHFFFAOYSA-N 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
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- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 description 2
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- 150000003839 salts Chemical class 0.000 description 2
- MFYSUUPKMDJYPF-UHFFFAOYSA-N 2-[(4-methyl-2-nitrophenyl)diazenyl]-3-oxo-n-phenylbutanamide Chemical compound C=1C=CC=CC=1NC(=O)C(C(=O)C)N=NC1=CC=C(C)C=C1[N+]([O-])=O MFYSUUPKMDJYPF-UHFFFAOYSA-N 0.000 description 1
- UBVSIAHUTXHQTD-UHFFFAOYSA-N 2-n-(4-bromophenyl)-1,3,5-triazine-2,4-diamine Chemical compound NC1=NC=NC(NC=2C=CC(Br)=CC=2)=N1 UBVSIAHUTXHQTD-UHFFFAOYSA-N 0.000 description 1
- QGHDLJAZIIFENW-UHFFFAOYSA-N 4-[1,1,1,3,3,3-hexafluoro-2-(4-hydroxy-3-prop-2-enylphenyl)propan-2-yl]-2-prop-2-enylphenol Chemical group C1=C(CC=C)C(O)=CC=C1C(C(F)(F)F)(C(F)(F)F)C1=CC=C(O)C(CC=C)=C1 QGHDLJAZIIFENW-UHFFFAOYSA-N 0.000 description 1
- IYHIFXGFKVJNBB-UHFFFAOYSA-N 5-chloro-2-[(2-hydroxynaphthalen-1-yl)diazenyl]-4-methylbenzenesulfonic acid Chemical compound C1=C(Cl)C(C)=CC(N=NC=2C3=CC=CC=C3C=CC=2O)=C1S(O)(=O)=O IYHIFXGFKVJNBB-UHFFFAOYSA-N 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- SGHZXLIDFTYFHQ-UHFFFAOYSA-L Brilliant Blue Chemical compound [Na+].[Na+].C=1C=C(C(=C2C=CC(C=C2)=[N+](CC)CC=2C=C(C=CC=2)S([O-])(=O)=O)C=2C(=CC=CC=2)S([O-])(=O)=O)C=CC=1N(CC)CC1=CC=CC(S([O-])(=O)=O)=C1 SGHZXLIDFTYFHQ-UHFFFAOYSA-L 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- JHWNWJKBPDFINM-UHFFFAOYSA-N Laurolactam Chemical compound O=C1CCCCCCCCCCCN1 JHWNWJKBPDFINM-UHFFFAOYSA-N 0.000 description 1
- 229910013872 LiPF Inorganic materials 0.000 description 1
- 101150058243 Lipf gene Proteins 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229920000299 Nylon 12 Polymers 0.000 description 1
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- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 239000003522 acrylic cement Substances 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- MYONAGGJKCJOBT-UHFFFAOYSA-N benzimidazol-2-one Chemical compound C1=CC=CC2=NC(=O)N=C21 MYONAGGJKCJOBT-UHFFFAOYSA-N 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000001055 blue pigment Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
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- 235000019994 cava Nutrition 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- XCJYREBRNVKWGJ-UHFFFAOYSA-N copper(II) phthalocyanine Chemical compound [Cu+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 XCJYREBRNVKWGJ-UHFFFAOYSA-N 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 235000012732 erythrosine Nutrition 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229920000554 ionomer Polymers 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- GWVMLCQWXVFZCN-UHFFFAOYSA-N isoindoline Chemical compound C1=CC=C2CNCC2=C1 GWVMLCQWXVFZCN-UHFFFAOYSA-N 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 150000002641 lithium Chemical class 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- RQGPLDBZHMVWCH-UHFFFAOYSA-N pyrrolo[3,2-b]pyrrole Chemical compound C1=NC2=CC=NC2=C1 RQGPLDBZHMVWCH-UHFFFAOYSA-N 0.000 description 1
- IZMJMCDDWKSTTK-UHFFFAOYSA-N quinoline yellow Chemical compound C1=CC=CC2=NC(C3C(C4=CC=CC=C4C3=O)=O)=CC=C21 IZMJMCDDWKSTTK-UHFFFAOYSA-N 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000001054 red pigment Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000003229 sclerosing agent Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- SEEPANYCNGTZFQ-UHFFFAOYSA-N sulfadiazine Chemical compound C1=CC(N)=CC=C1S(=O)(=O)NC1=NC=CC=N1 SEEPANYCNGTZFQ-UHFFFAOYSA-N 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- HRXKRNGNAMMEHJ-UHFFFAOYSA-K trisodium citrate Chemical compound [Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O HRXKRNGNAMMEHJ-UHFFFAOYSA-K 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
- 150000003755 zirconium compounds Chemical class 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or electrolyte
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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
-
- 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
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
-
- 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
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/117—Inorganic material
- H01M50/119—Metals
-
- 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
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/121—Organic material
-
- 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
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/578—Devices or arrangements for the interruption of current in response to pressure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2200/00—Safety devices for primary or secondary batteries
- H01M2200/20—Pressure-sensitive devices
-
- 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)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
- Secondary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
This utility model provides a kind of electrical storage device, possess, apparatus main body portion (60) and two external packing bodies of this main part of collecting, described external packing body (50) has metal foil layer (2, 12) and be laminated in the heat sealability resin bed (4 in a face of this metal foil layer, 14), the conductive part (54 not covered by described heat sealability resin bed it is provided with in the local in the one face of described metal foil layer, 56), the positive pole (61) in apparatus main body portion electrically connects with the conductive part (56) of one external packing body, the negative pole (62) in apparatus main body portion electrically connects with the conductive part (54) of another external packing body described, positive pole is electrically connected by being in the state contacted with described conductive part (54) with at least one electrode (62) in negative pole.When intrinsic pressure rising, the conductive part (54) and the electrode (62) that are in contact condition separate, and thus cut off conducting.
Description
Technical field
This utility model relates to the electrical storage device as mobile device accumulator, storage battery loaded onto vehicle, the accumulator of regenerated energy recovery, capacitor (electric capacity) etc..
It should be noted that, in the specification and claims, term " contacts " and refers to, when electrical storage device (battery etc.) causes intrinsic pressure rising because of produced gas savings and then makes the external packing body containing apparatus main body portion outwards heave, this conductive part and the electrode of electrical connection are in the state that can separate, thus, this term " contacts " and comprises such as " tacky state " etc., but do not comprise the joint utilizing bonding agent to be formed, the joint that formed by ultrasound wave etc. engages.
Background technology
Lithium rechargeable battery is widely used as the power supply of such as notebook computer, videocorder, mobile phone, electric automobile etc..This lithium rechargeable battery uses, and surrounds the structure of battery main body portion (comprising the main part of positive pole, negative pole and electrolyte) surrounding with housing.This shell body material (exterior material) is known to be had such as by the most bonding to the outer layer being made up of heat-resistant resin film, aluminium foil layer, the internal layer that is made up of thermoplastic resin film and the structure of integration.
But, in lithium rechargeable battery etc., there is following situation: when overcharging or excessive temperature rise constantly, in battery main body portion, easily produce gas, thus gas is gradually put aside in the inner space covered by exterior material, makes the intrinsic pressure rising within exterior material.Worrying, this intrinsic pressure rising is the most, the most more there will be the situation that exterior material ruptures, it is therefore proposed there is the technology preventing exterior material from rupturing.
Such as, it patent documentation 1 is the release mechanism of a kind of laminated cell, described layer-built battery is by the inside collecting generating element shaping the external package casing that edge, sheet material respective periphery is bonded with each other being made up of two overlapped laminate and electrolyte being constituted, in described release mechanism, it is provided with the protuberance highlighted outward with connecting inside it from a side portion at described external package casing, and possess relief valve, this relief valve is included at described protuberance the steam vent being formed on two at least one described shaping sheet materials shaped in sheet material and is crimped on the peritreme portion of this steam vent with flexibility and closes the valve body of described steam vent.
Patent documentation 1: Japanese Unexamined Patent Publication 2007-157678 publication
Utility model content
But, as above-mentioned conventional art, it is provided with in the case of making the gas produced inside external packing body escape into the relief valve mechanism outside external packing body, needs to arrange the new operation of this relief valve mechanism, there is the problem that manufacturing process is complicated, productivity is the lowest.
This utility model is made in view of this technical background, purpose is to provide a kind of electrical storage device, it is when making intrinsic pressure rising because producing gas, cut off the conducting between conductive part (metal forming exposed portion) and the electrode in apparatus main body portion of external packing body, and can prevent the external packing body caused by further intrinsic pressure rising from rupturing.
In above-mentioned conventional art, by making produced gas escape into outside from the relief valve with steam vent and valve body, prevent the exterior material caused by intrinsic pressure rising from rupturing.On the contrary, the applicant is it is contemplated that use and can cut off the structure of conducting because putting aside produced gas when making intrinsic pressure rising, by forming such not on-state, it is suppressed that generation further, puts aside gas thus prevents rupturing of external packing body.
In order to realize described purpose, this utility model provides techniques below scheme.
null(1) electrical storage device possesses apparatus main body portion、House two external packing bodies in this apparatus main body portion，Described external packing body has metal foil layer、It is laminated in the heat sealability resin bed in this one face of metal foil layer，The conductive part not covered by described heat sealability resin bed it is provided with in the local in the one face of described metal foil layer，Space between described two external packing bodies that heat sealability resin bed is arranged as opposed to the most each other houses described apparatus main body portion，The heat sealability resin bed of the circumference of described two external packing bodies engages to each other and seals，The positive electrical in described apparatus main body portion is connected to the conductive part of a described external packing body，The negative electricity in described apparatus main body portion is connected to the conductive part of another described external packing body，Described positive pole is in, with at least one electrode in negative pole, the state contacted with described conductive part and carries out described electrical connection.
(2) in the electrical storage device as described in preceding paragraph (1), described external packing body also has the heat-resistant resin layer in another face being laminated in described metal foil layer, and the local in another face of described metal foil layer is provided with the portion of terminal not covered by described heat-resistant resin layer.
(3), in preceding paragraph (1) or the electrical storage device described in (2), described external packing body is including that the region forming the conductive part of electrical connection by being in described contact condition forms the depressed part to side, described apparatus main body portion depression.
(4) in preceding paragraph (1)～the electrical storage device according to any one of (3), forming described conductive part and the electrode of electrical connection by being in described contact condition, the coating layer formed by means of applying conductive compositions is in the state of contacting with each other.
(5) in the electrical storage device described in any one of preceding paragraph (1)～(4), contain intrinsic pressure in the space in described apparatus main body portion for atmospheric pressure below.
(6), in the electrical storage device described in preceding paragraph (5), under the air pressure atmosphere less than atmospheric pressure, the heat sealability resin bed of described circumference joint each other is carried out.
Utility model effect
(1) structure of technical scheme is, state that positive pole is contacted by the conductive part (metal forming exposed portion) being in external packing body with at least one party's electrode in negative pole and be electrically connected, when charging time or electric discharge time etc., in the case of apparatus main body portion etc. creates gas, when gas is put aside the receiving space between external packing body and is made intrinsic pressure rising, make by making external packing body stick out to be in the conductive part of described contact condition and electrode separation (conductive part and electrode are in not contact condition), become not on-state, thus, can suppression produce further, savings gas, it is possible to prevent rupturing of the external packing body caused by intrinsic pressure rising.
(2) in technical scheme, owing to another surface layer at metal foil layer folds heat-resistant resin layer, (in addition to portion of terminal), insulating properties can be substantially ensured that, also ensure that physical strength, the metal forming exposed portion (portion of terminal) being partially provided with not covered by heat-resistant resin layer in another face of metal foil layer, thus can be energized by this exposed portion (portion of terminal).
(3) in technical scheme, external packing body comprise by with electrode contact and form the region of the conductive part electrically connected and form the depressed part that caves in side, apparatus main body portion (inward side), thus, when producing gas and make intrinsic pressure rising, described depressed part expands and overturns is the protuberance that side is prominent outward, houses produced gas (space between the protuberance and the apparatus main body portion that are turned into becomes gas accumulation portion) in the space being formed between this protuberance and apparatus main body portion.In addition, produce gas and make intrinsic pressure rising, the depressed part expanded turn-up of external packing body is the prominent protuberance of side outward, so that being in conductive part and the electrode separation (becoming not contact condition) of described contact condition, and then become not on-state, thus, further generation, savings gas can be suppressed, can prevent because intrinsic pressure rising external packing body therefore ruptures.
(4) structure of technical scheme is, the coating layer formed by applying conductive compositions by (accompanying), ensure that the contact condition of conductive part and electrode, by accompanying this coating layer, the adaptation making conductive part and electrode rises, and can improve the conducting state of conductive part and the electrode being under this contact condition further.
(5) and in the technical scheme of (6), contain intrinsic pressure in the space in apparatus main body portion for atmospheric pressure below, thus this conductive part and the conducting state of electrode that ensure that conducting by being in contact condition can be improved further.
Accompanying drawing explanation
Fig. 1 is the sectional view of the embodiment representing electrical storage device of the present utility model.
Fig. 2 is the top view of the electrical storage device of Fig. 1.
Fig. 3 is owing to making intrinsic pressure rising because producing gas and then making external packing body heave in the electrical storage device representing Fig. 1, thus has cut off the sectional view of the state of the conducting of negative conductive portion and negative pole.
Fig. 4 is the sectional view of other embodiment representing electrical storage device of the present utility model.
Fig. 5 is the top view of the electrical storage device of Fig. 4.
Fig. 6 is owing to because producing gas and intrinsic pressure rising and then making the depressed part of external packing body heave laterally, overturning and having cut off the sectional view of the state of the conducting of conductive part and electrode for side outward highlights protuberance in the electrical storage device representing Fig. 4.
Fig. 7 is the sectional view of the another embodiment representing electrical storage device of the present utility model.It should be noted that, the top view of the electrical storage device of Fig. 7 is identical with Fig. 2, the electrical storage device that Fig. 7 represents owing to making intrinsic pressure rising because producing gas, and then make external packing body heave, cut off negative conductive portion identical with Fig. 3 with the sectional view of the state of the conducting of negative pole.
Description of reference numerals
1 ... electrical storage device；2 ... the first metal foil layer；4 ... the first heat sealability resin bed；8 ... the first heat-resistant resin layer；9 ... positive terminal portion (metal forming exposed portion)；12 ... the second metal foil layer；14 ... the second heat sealability resin bed；18 ... the second heat-resistant resin layer；19 ... negative electrode terminal portion (metal forming exposed portion)；50 ... external packing body；54 ... negative conductive portion (metal forming exposed portion)；56 ... positive conductive portion (metal forming exposed portion)；60 ... apparatus main body portion；61 ... positive pole；62 ... negative pole；71 ... depressed part；75 ... coating layer；81 ... the protuberance after upset
Detailed description of the invention
Fig. 1, an embodiment of 2 expression electrical storage devices 1 of the present utility model.This electrical storage device 1 is lamination cased battery, possesses the battery unit (bare cell) 60 as apparatus main body portion and receives the external package casing 45 of this battery unit 60.
As shown in Figure 1, 2, external package casing 45 is made by combined body 51 and lid 55, described main body 51 has overlooks the flange 53 extended outward for the recess 52 of rectangle and the opening edge from this recess 52, and the size of described lid 55 is identical with the peripheral dimension of the flange 53 of described main body 51.Described recess 52 forms the storage space of battery unit 60.
The constituent material of described main body 51 uses external packing body 50, and this external packing body 50 has: the second metal foil layer 12, is laminated in the second heat sealability resin bed 14 in a face (the first face) of this second metal foil layer 12 by the second bond layer (not shown), is laminated in second heat-resistant resin layer 18 in another face (the second face) of described second metal foil layer 12 by the first bond layer (not shown).On this external packing body 50, it is provided with the negative conductive portion (metal forming exposed portion) 54 not covered by described second heat sealability resin bed and the second bond layer in the local in a face of described second metal foil layer 12.In present embodiment, the central part in a face of described second metal foil layer 12 is formed with described negative conductive portion 54.Additionally, the local in another face of described second metal foil layer 12, it is provided with the negative electrode terminal portion (metal forming exposed portion) 19 not covered by described second heat-resistant resin layer and the first bond layer.In present embodiment, the end in another face of described second metal foil layer 12 is formed with described negative electrode terminal portion 19.
The constituent material of described lid 55 uses external packing body 50, and this external packing body has the first metal foil layer 2, the first heat sealability resin bed 4 being laminated in a face (the first face) of this first metal foil layer 2 by the second bond layer (not shown), is laminated in first heat-resistant resin layer 8 in another face (the second face) of described first metal foil layer 2 by the first bond layer (not shown).On this external packing body 50, in the positive conductive portion (metal forming exposed portion) 56 being partially provided with not covered by described first heat sealability resin bed and the second bond layer in a face of described first metal foil layer 2.In present embodiment, the central part in a face of described first metal foil layer 2 is formed with described positive conductive portion 56.The positive terminal portion (metal forming exposed portion) 9 being partially provided with not covered by described first heat-resistant resin layer and the first bond layer in another face of described first metal foil layer 2.In present embodiment, the end in another face of described first metal foil layer 2 is formed with described positive terminal portion 9.
Described main body 51 is that the described external packing body to flat board sheet material does bulging, drawing and forming etc. and shapes and form recess 52, and is the peripheral dimension of flange 53 by the not deformed part deburring of the surrounding of recess 52 and obtains.On the other hand, described lid 55 is to be required size by the described external packing body severing of flat board sheet material and obtains.The inner surface of the bottom of the recess 52 of described main body 51 is provided with negative conductive portion 54, and the inner surface of lid 55 is provided with positive conductive portion 56 (with reference to Fig. 1).The exposed portion that described positive conductive portion 56 and negative conductive portion 54 are exposed by the metal foil layer 2,12 making external packing body 50 and obtain is formed.Additionally, the exposed portion that described positive terminal portion 9 and negative electrode terminal portion 19 are exposed by the metal foil layer 2,12 making external packing body 50 and obtain is formed.
Described battery unit 60 is that the negative pole 62 of the positive pole 61 by sheet and sheet is laminated across shim 63, and this battery unit 60 is contained in the space between described two external packing bodies 50.(ultrasonic bonding, solder, utilize that conductive adhesive formed then etc.) makes positive pole 61 electrically connect with positive conductive portion 56 in the positive conductive portion 56 of external packing body 50 by engaging in the end of described positive pole 61, make the end of described negative pole 62 become state that the negative conductive portion 54 with external packing body 50 contacts and make negative pole 62 electrically connect with negative conductive portion 54.In present embodiment, the end of negative pole 62 and the contact in negative conductive portion 54 are face contact (with reference to Fig. 1).
Described electrical storage device 1 is by battery unit 60 being accommodated in the recess 52 of main body 51 and covering lid 55, the heat sealability resin bed 4,14 of the contact site between the flange 53 of main body 51 and lid 55 is sealed each other with reserving electrolyte inlet, and injecting after electrolyte does, the heat-sealing of described electrolyte inlet is formed sealing.In present embodiment, under the air pressure atmosphere less than atmospheric pressure, described heat sealability resin bed 4,14 is engaged each other and forms sealing, in obtained electrical storage device 1, contain in the space in apparatus main body portion 60 is intrinsic pressure identical with atmospheric pressure, or less than atmospheric pressure, thus, the end of negative pole 62 and the contact in negative conductive portion 54 form face contact.By forming such contact, can make to guarantee between the end of negative pole 62 and negative conductive portion 54 sufficiently conductive.
In above-mentioned electrical storage device 1, external packing body 50 being provided with positive terminal portion 9 and negative electrode terminal portion 19, thus, can be connected can be formed in the way of being energized with other machine by these portion of terminal 9,19.Additionally, the conductive part (metal foil layer) connecting battery unit (apparatus main body portion) is formed as the local of external packing body, even if not using lug also can realize energising.By eliminating lug, lightweight and the miniaturization of electrical storage device can be realized.
In addition, in above-mentioned electrical storage device 1, structure is the end of positive pole 61 and positive conductive portion 56 engages, and the end of negative pole 62 contacts (rather than joint) with 54, negative conductive portion, thus, during charging, time during electric discharge etc., in the case of creating gas from apparatus main body portion etc., gas gradually put aside and make external package casing 45 in intrinsic pressure rising if, it is in the negative conductive portion 54 of described contact condition and negative pole 62 separates and becomes the state (with reference to Fig. 3) that do not contacts each other, become not on-state, thus, can suppress to produce further, savings gas, thus, rupturing by the intrinsic pressure external packing body 50 rising and causing can be prevented.It addition, the end of positive pole 61 and positive conductive portion 56 engage, therefore, even intrinsic pressure in external package casing 45 rises, end and the positive conductive portion 56 of positive pole 61 does not separates (with reference to Fig. 3).
Additionally, in above-mentioned embodiment, use positive pole 61 and positive conductive portion 56 engages, and negative pole 62 and negative conductive portion 54 are in the structure of contact condition, but it is not particularly limited as such structure, such as, can be to use negative pole 62 and negative conductive portion 54 to engage, and positive pole 61 and positive conductive portion 56 are in the structure of contact condition, or use positive pole 61 and positive conductive portion 56 to be in contact condition, and negative pole 62 and negative conductive portion 54 are in the structure of contact condition.Regardless of structure, once gas is gradually put aside and is made the intrinsic pressure rising in external package casing 45, then the electrode and the conductive part that are in contact condition can separate, and form not on-state, can suppress further to produce, put aside gas, prevent rupturing of external packing body.
Then, other embodiment of electrical storage device 1 of the present utility model is shown in Fig. 4,5.In present embodiment, use positive pole 61 and positive conductive portion 56 is in surface contact state, negative pole 62 and negative conductive portion 54 and is in the structure of surface contact state.In addition, the region comprising negative conductive portion 54 of main body 51 (external packing body 50), form the depressed part 71 of side, oriented apparatus main body portion 60 depression, and in the region comprising positive conductive portion 56 of lid 55 (external packing body 50), form the depressed part 71 of side, oriented apparatus main body portion 60 depression.In present embodiment, the plan view shape of described depressed part 71 is toroidal (with reference to Fig. 5).Described depressed part 71 can be formed by carrying out bulging, drawing and forming etc..In addition to above-mentioned structure, other structure and described embodiment (Fig. 1,2) are identical.Therefore, the description thereof will be omitted.
Fig. 4, in electrical storage device 1 shown in 5, use positive pole 61 and positive conductive portion 56 is in surface contact state, negative pole 62 and negative conductive portion 54 are in the structure of surface contact state, thus, once produce gas and make intrinsic pressure rising, no matter the most described depressed part 71 is depressed part upward, depressed part the most down, the most as illustrated in fig. 6, heave outward and overturn as the prominent protuberance 81 in side outward, house in the space 82 being formed between this protuberance 81 and apparatus main body portion 60 and produce gas (space between protuberance 81 and apparatus main body portion 60 that upset obtains becomes gas accumulation space 82).In addition, make intrinsic pressure rising because producing gas and then make the depressed part 71 of external packing body 50 heave and overturn as the prominent protuberance 81 in side outward, thus, as shown in Figure 6, the conductive part 54,56 and the electrode 62,61 that are in described contact condition separate (becoming not contact condition), and become not on-state, thus generation further, savings gas can be suppressed, prevent rupturing of the external packing body 50 caused by intrinsic pressure rising.
Form the side of described depressed part 71, be preferably formed into from the bottom surface of this depressed part 71 towards the peristome of depressed part 71, the inclined plane (with reference to Fig. 4) tilted towards foreign side from the interior side of depressed part 71.I.e., in the diagram, the bottom surface of depressed part 71 and side angulation α are preferably set to, more than 90 degree, wherein, further preferably be set as the scope of 100 °≤α≤160 °, the most still the scope of 120 °≤α≤150 °.Described angle [alpha] be set as bigger than 90 degree in the case of, if because generation, the savings of gas make intrinsic pressure rising, the most described depressed part 71 easily overturn the protuberance 81 highlighted for side outward.
The plan view shape of described depressed part 71 is not particularly limited, for example, it is possible to list circular shape, generally elliptical shape, further, it is also possible to list the polygonal shapes etc. such as quadrangle form, hexagonal shape.Wherein, the plan view shape of described depressed part 71 is preferably circular shape or generally elliptical shape.In the case of being circular shape or generally elliptical shape, when defining intrinsic pressure rising because of generation, savings gas, described depressed part 71 easily overturns the protuberance highlighted for side outward.
The degree of depth of described depressed part 71 is preferably set to 0.5mm～2mm.By being allowed to as more than 0.5mm, can ensure that the space in the gas accumulation portion formed by the protuberance 81 after overturning, when overturning the protuberance 81 into side outward is prominent because the savings of produced gas makes depressed part 71 heave, the conductive part and the electrode that are in contact condition separate effectively, intrinsic pressure when rising, the partition (becoming not on-state) of conducting can be guaranteed effectively.Additionally, be below 2mm by the degree of depth making depressed part 71, it is possible to achieve the slimming of electrical storage device, space saving.
In this utility model, the formation of positive conductive portion (metal forming exposed portion) 56 can be carried out as follows.The first heat sealability resin bed 4 is pasted by the second bond layer (not shown) in one face (the first face) of described first metal foil layer 2.Now, the region in addition to the part corresponding with positive conductive portion (metal forming exposed portion), coating constitutes the bonding agent of the second bond layer, is not coated with bonding agent in the region corresponding with positive conductive portion (metal forming exposed portion).When defining such bonding agent uncoated area, paste the first heat sealability resin bed 4 at the first metal foil layer 2.Bonding agent can be coated on any one face in the opposite face of the first metal foil layer 2 and the first heat sealability resin bed 4.
Then, it is positioned at the first heat sealability resin bed 4 of bonding agent uncoated area by removal, forms metal forming exposed portion (positive conductive portion) 56.Such as, to the periphery irradiating laser of bonding agent uncoated area in the first heat sealability resin bed 4, cut off the first heat sealability resin bed and be removed, thus forming metal forming exposed portion (positive conductive portion) 56.The kind of described laser is not limited, and can enumerate the such as Solid State Laser with YAG laser as representative, the gas laser etc. with carbon dioxide laser as representative.
Form described negative conductive portion (metal forming exposed portion) 54, formation positive terminal portion (metal forming exposed portion) 9 to carry out with the maneuver identical with the maneuver of above-mentioned formation positive conductive portion (metal forming exposed portion) 56 with forming negative electrode terminal portion (metal forming exposed portion) 19.
It addition, what the formation maneuver of above-mentioned metal forming exposed portion 9,19,54,56 only represented is a wherein example, it is not particularly limited to such maneuver.
In this utility model, preferably structure is, in the case of using described electrode and described conductive part to form the structure of mutual electrical connection by being in contact condition, the coating layer 75 that this electrode and this conductive part are formed by means of applying conductive compositions is in the state of contacting with each other (particularly preferably surface contact state) (with reference to Fig. 7).By accompanying such coating layer 75 each other, the adaptation of conductive part and electrode can be improved, thus the conducting state of conductive part and the electrode being in contact condition can be improved further.Described coating layer 75 is by being at least coated with described compositions on any one and formed in electrode and conductive part.In Fig. 7, coating layer 75 is to coat the local of conductive part (metal forming exposed portion) and formed but it also may use the structure of whole that coats conductive part (metal forming exposed portion).
Conductive composition for described coating layer 75 can exemplify, such as, contain binding agent (adhesive) and the compositions of conductive auxiliary agent, do not do and limit especially.Described binding agent can be exemplified as, such as PVDF (Kynoar), SBR (butadiene-styrene rubber), CMC (sanlose), PAN (polyacrylonitrile), straight chain type polysaccharide etc., is not specially limited.Additionally, described conductive auxiliary agent can be exemplified as, such as CB (carbon black), CNT (CNT) etc., it is not specially limited.Generally, after binding agent is made of the solvent being suitable for respectively with this binding agent dissolving, it is coated, removes solvent with drying process, and forming described coating layer 75 is preferably.Expect to do in the way of making described solvent not remain dry.The coating process of described compositions can be exemplified as such as intaglio plate coating etc., is not specially limited.The thickness of described coating layer 75 is preferably set to 10 μm～50 μm.In order to make conductive part and electrode contact and in the case of the two accompanies such coating layer 75 each other, the intrinsic pressure rising in external package casing 45 is made if producing gas, then by making external packing body heave, making to be in the conductive part of contact condition and electrode separation by coating layer and become mutual discontiguous state, conducting is cut off.
In this utility model, apparatus main body portion 60 is preferably received under atmosphere less than atmospheric pressure and the circumference of external packing body is done joint sealing each other.By using such structure, the space of resettlement section (recess) 52 can be reduced, the space of resettlement section 52 in addition become with apparatus main body portion 60 same volume after, owing to intrinsic pressure in receiving space can be maintained below atmospheric pressure, external packing body is applied the most inwardly from outside pressure (towards private side), thus, the adaptation of electrode and the conductive part being in contact condition can be improved, the face contact being fully contacted can be formed, it can be ensured that sufficiently turn on.When using this structure such, the most such as, carry out being engaged with each other of heat sealability resin bed of the circumference of described two external packing bodies in 0.002MPa (2KPa) atmosphere below, more preferably under the following atmosphere of 0.001MPa (1KPa), carry out above-mentioned joint.It is preferable, however, that the inner pressure ratio 0.01MPa (10KPa) being configured to contain in the space in described apparatus main body portion 60 is little, it is further particularly preferred that be set as the scope of 1KPa～10KPa.
It addition, in above-mentioned embodiment, illustrate as the battery unit of an example in apparatus main body portion 60 is roll type, is not limited to this structure, can be such as, 3 layer stackup structure (being formed without the type of reel) that positive pole/shim/negative pole is constituted.
In addition, in above-mentioned embodiment, one external packing body 50 is formed with recess 52, but the formation of this recess 52 is not necessary structure of the present utility model, can be utilized in two external packing bodies 50 and be not provided with the structure of recess, the circumference of external packing body 50 is also done the structure sealed by space accommodation apparatus main part 60 between this pair external packing body 50 each other.
In this utility model, as long as the material constituting each layer of described external packing body 50 can serve as the material of the exterior material of electrical storage device, it is possible to use arbitrary material.Preferred material is as follows:
(heat-resistant resin layer)
The heat-resistant resin constituting described first and second heat-resistant resin layer (outer layer) 8,18 uses, infusible heat-resistant resin under the heat-sealing temperature when sealing external packing body.The heat-resistant resin of the fusing point with fusing point high more than 10 DEG C than the heat sealability resin that constitute heat sealability resin bed is preferably used as described heat-resistant resin, particularly preferably uses the heat-resistant resin of the fusing point with higher than the fusing point of heat sealability resin more than 20 DEG C.
Described first and second heat-resistant resin layer 8,18 can be illustrated such as polyamide membrane, polyester film etc., and these stretched film is preferably used.Wherein, from the point of view of formability and intensity viewpoint, particularly preferably biaxial stretching polyamide film or biaxially oriented polyester film, also or comprise their multilayer film, further preferably paste biaxial stretching polyamide film and the multilayer film of biaxially oriented polyester film.Described polyamide membrane can be illustrated such as Nylon 6 Film, Nylon 66 Membrane, MXD nylon membrane etc., but is not specially limited.Biaxial stretch-formed polybutylene terephthalate (PBT) (PBT) film, biaxial stretch-formed polyethylene terephthalate (PET) film etc. additionally, biaxially oriented polyester film can be illustrated.
Additionally, improve for the flatness on the surface of improving described first and second heat-resistant resin layer 8,18 and sliding between molding die, preferably coordinate lubricant and/or solid particle.
Thickness the most preferably 9 μm of described first and second heat-resistant resin layer 8,18～50 μm.By being set as more than described suitable lower limit, can ensure that the sufficient intensity as packing timber, and, by being set as below described suitable higher limit, stress when shaping can be reduced, improve formability.
(heat sealability resin bed)
The first and second heat sealability resin bed 4,14 as la m possesses outstanding chemical proofing for the electrolyte etc. that the middle corrosivity used such as lithium rechargeable battery are strong, and undertakes the function that packaging material give heat sealability.
Described first and second heat sealability resin bed 4,14 preferably thermoplastic resin unstretching film.Described thermoplastic resin unstretching film is not specially limited, and from the viewpoint of chemical proofing and heat sealability, is preferably made up of polyethylene, polypropylene, olefin copolymer, their sour modifier and ionomer.Additionally, olefin copolymer can illustrate EVA (vinyl-vinyl acetate copolymer), EAA (ethylene-acrylic acid copolymer), EMAA (ethylene-methacrylic acid copolymer).Further, it is also possible to use polyamide membrane (such as nylon 12), polyimide film.
Described first and second heat sealability resin bed 4,14 is also identical with described heat-resistant resin layer, in order to improve the flatness on surface, preferably coordinates lubricant and/or solid particle.
The thickness of described first and second heat sealability resin bed 4,14 is all preferably set to 20 μm～80 μm.By being set to more than 20 μm, insulating properties can be substantially ensured that, and, by being set as below 80 μm, resin usage amount can be reduced, can realize reducing cost.Wherein, the thickness of described first and second heat sealability resin bed 4,14 is the most particularly preferably set as 20 μm～50 μm.It should be noted that described first and second heat sealability resin bed can be monolayer, it is also possible to be multilamellar.Multilayer film can be illustrated in the two-sided trilamellar membrane being layered without isotactic polypropylene film of block polypropylene film.
(metal foil layer)
Described first and second metal foil layer 2,12 undertakes the function that external packing body 50 gives the barrier properties for gases stoping oxygen, moisture to enter.In the case of metal forming exposed portion is used as conductive part, described first and second metal foil layer 2,12 uses the metal forming of good conductivity.Can illustrate such as aluminium foil, Copper Foil, nickel foil, stainless steel foil or their covering paper tinsel, their annealing paper tinsel or unannealed paper tinsel etc..Furthermore it is preferred that the metal forming done plating by conductive metal such as nickel, stannum, copper, chromium and obtained, such as, make to be used as the aluminium foil of plating.As long as described electric conductivity plating tunicle is formed at least corresponding with the metal forming exposed portion part of metal foil layer.Additionally, described metal foil layer also implements following chemical conversion treatment to form chemical conversion tunicle preferably as base treatment.
(the chemical conversion tunicle of metal foil layer)
The outer layer of stacking external packing body 50 and la m are the layers being made up of resin, although the amount penetrated into is extremely trace, have and penetrate into light, oxygen, the worry of liquid from the outside of housing to these resin beds, also have the worry oozing out content (electrolyte of battery, food, medicine etc.) from inside.If these penetrate into thing arrival metal foil layer, the corrosion of metal foil layer can be caused.It is therefore preferable that form the chemical conversion tunicle that corrosion resistance is high on the surface of metal foil layer 2,12, thus, it is possible to the corrosion resistance realizing metal foil layer 2,12 improves.
Described chemical conversion tunicle is by the upper tunicle implementing chemical conversion treatment and formed of metal foil surface (at least one party surface of metal forming), for example, it is possible to the chromium-less chemical conversion treatment processing, using zirconium compounds by metal forming is implemented chromate is formed.Such as,
1) comprise: phosphoric acid,
Chromic acid,
The aqueous solution of the mixture of at least one compound selected from the group that the slaine of fluoride and the non-metal salt of fluoride are constituted.
2) comprise: phosphoric acid,
From acrylic resin, chitosan derivative resin and phenolic resinoid constitute group select at least one resin,
The aqueous solution of the mixture of at least one compound selected from the group that chromic acid and chromium (III) salt are constituted
3) comprise: phosphoric acid,
From acrylic resin, chitosan derivative resin and phenolic resinoid constitute group select at least one resin,
At least one compound selected from the group that chromic acid and chromium (III) salt are constituted,
The aqueous solution of the mixture of at least one compound selected from the group that the slaine of fluoride and the non-metal salt of fluoride are constituted
By in coating above-mentioned 1)～3) in after arbitrary aqueous solution, be dried, implement chemical conversion treatment.
Described chemical conversion tunicle preferred chromium adhesion amount (adhesion amount of each) is 0.1mg/m2～50mg/m2, particularly preferred 2mg/m2～20mg/m2。
The thickness of described metal foil layer 2,12 is preferably 20 μm～200 μm.By making thickness be more than 20 μm, be possible to prevent when manufacturing the calendering when metal forming, heat-sealing time produce pin hole, breakage, by making thickness be below 200 μm, when can reduce bulging, drawing and forming time stress, formability can be improved.
(the first bond layer)
Described first bond layer is to play the layer by metal foil layer 2,12 and the articulate function of heat-resistant resin layer 8,18 constituting outer layer, such as, the two-package curing type polyester-polyurethane system resin that by host polyester resin, sclerosing agent multifunctional isocyanate compound formed is preferably used, or comprises the bonding agent of polyether-polyurethane system resin.
(the second bond layer)
Described second bond layer is the layer playing the function combined by the heat sealability resin bed 4,14 of metal foil layer 2,12 and composition la m, the bond layer such as formed by urethane adhesive, acrylic acid series bonding agent, epoxide resin adhesive, polyolefin bonding agent, elastic system bonding agent, fluorine system bonding agent etc. of can illustrating.Wherein, acrylic acid series bonding agent, polyolefin bonding agent are preferably used, in such a case, it is possible to improve electrolyte resistance and the water vapor barrier property of external packing body 50.Additionally, in the case of external packing body 50 is used as battery container, the bonding agent such as acid modified polypropene, acid modified poly ethylene is preferably used.
In addition, in order to easily determine above-mentioned bonding agent uncoated area, first bond layer and the second bond layer can add the coloring agent of the organic system pigment of the scope of 0.1 mass parts～5 mass parts, inorganic series pigments, pigment etc. relative to 100 mass parts bonding agent compositions in above-mentioned bonding agent.The mordant pigments etc. such as described organic system pigment is not particularly limited, and the polycycle series pigments such as the such as azo pigment of C lake red CAN'T, aphthols, hansa yellow, dual-azo yellow, benzimidazolone etc., quinophthalone, isoindoline, pyrrolopyrrole, diazine, phthalocyanine blue, phthalocyanine green of can illustrating, lake red C, Watchung are red.Additionally, described inorganic series pigments is not particularly limited, can illustrate such as carbon black, titanium oxide, calcium carbonate, Kaolin, ferrum oxide, zinc oxide etc..Additionally, described pigment is not particularly limited, can illustrate such as, the blue pigment class etc. such as red pigments class, disodium salt (blue No. 1) such as the xanthein class such as trisodium salt (yellow 4), disodium salt (red No. 3).
Additionally, the gross thickness of external packing body 50 is preferably 50 μm～the scope of 300 μm.Total thickness, less than 50 μm, easily produces breakage, pin hole during shaping and when sealing.In addition total thickness is more than 300 μm, and formability can reduce.
Embodiment
Then, explaining specific embodiment of the present utility model, this utility model is not particularly limited in these embodiments.
<embodiment 1>
Double spread at the aluminium foil of thickness 40 μm comprises the chemical synthesis treatment liquid of the compound of polyacrylic acid, phosphoric acid, chromium and fluorine, is dried with 150 DEG C, and making chromium adhesion amount is 3mg/m2。
One topcoating cloth polyester-polyurethane system bonding agent of the aluminium foil (metal foil layer) after described chemical conversion treatment.When this coating, by covering being partially formed as bonding agent uncoated area of end that process (stickup masking tape) makes a face of aluminium foil.Then, the biaxial stretching polyamide film (heat-resistant resin layer) of thickness 25 μm is pasted at this polyester-polyurethane system bonding agent coated face.Then, at another face coated acid modified polypropene system bonding agent of described aluminium foil.When this coating, by covering process (stickup masking tape), the central part in another face of aluminium foil is made to be formed as bonding agent uncoated area.Then, paste the un-stretched polypropylene film (heat sealability resin bed) of thickness 40 μm at this acid modified polypropene system bonding agent coated face, thus obtain duplexer.
Then, to the periphery irradiating laser of the bonding agent uncoated area of heat-resistant resin layer in described duplexer, cut off heat-resistant resin layer, remove the heat-resistant resin layer being positioned at bonding agent uncoated area, form portion of terminal.In addition, to the periphery irradiating laser of the bonding agent uncoated area of heat sealability resin bed in described sandwich, cut off heat sealability resin bed, remove the heat sealability resin bed being positioned at bonding agent uncoated area, form conductive part, thus obtain the external packing body 50 of flat board sheet material.Prepare two these external packing bodies 50.
Then, use described two external packing bodies, use the most both it is stated that method, structure, make Fig. 1, the battery of structure shown in 2.Electrolyte is used in the mixed solvent obtained than mixed carbonic acid ethyl (EC), dimethyl carbonate (DMC), ethylmethyl carbonate (EMC) with equal-volume dissolving lithium hexafluoro phosphate (LiPF with the concentration of 1 mole/L6) and obtain electrolyte and this electrolyte housed together with battery unit in the receiving space formed by described 2 external packing bodies.Additionally, it is to carry out under the air pressure atmosphere of the 1KPa forced down than air that the heat-sealing that the heat sealability resin bed of the circumference of described two external packing bodies is each other engages.
<embodiment 2>
Prepare two with the external packing body identical regulation external packing body being made in embodiment 1, use this two external packing bodies, the most both used it is stated that method, structure, make Fig. 4, the battery of structure shown in 5.Electrolyte uses electrolyte same as in Example 1.It should be noted that the bottom surface of depressed part 71 and side angulation α are set as 150 °, and, the depth-set of depressed part 71 is 1mm.Additionally, it is to carry out under the air pressure atmosphere of the 1KPa forced down than air that the heat-sealing that the heat sealability resin bed of the circumference of described two external packing bodies is each other engages.
With following assessment method, the preventing property that ruptures of the external packing body in the battery of the embodiment 1,2 using above-mentioned process to obtain is evaluated.
<rupturing preventing property assessment method>
Promote the decomposition (generation decomposition gas) of electrolyte by carrying out excessive temperature rise, make the intrinsic pressure of each battery the most slowly increase, the situation of research battery now.
Use the battery of embodiment 1 of the present utility model, it is warmed up to 90 DEG C, utilize the savings of decomposition gas, make intrinsic pressure when defining rising, external packing body is heaved outward, thus, the negative conductive portion 54 and the negative pole 62 that formed contact condition separate, and become the state (cut off conducting and become not on-state) (with reference to Fig. 3) not contacted each other.It should be noted that the positive conductive portion 56 being bonded with each other and positive pole 61 do not separate, but maintain engagement state (with reference to Fig. 3).
Use the battery of embodiment 2 of the present utility model, it is being warmed up to 90 DEG C, utilize the savings of decomposition gas, make intrinsic pressure when defining rising, 2 depressed parts 71 are all heaved and are overturn and highlight protuberance 81 for side outward, thus, form conductive part and the electrode separation of contact condition, become the state (cut off conducting and become not on-state) (with reference to Fig. 6) not contacted each other.
Thus, the battery of embodiment 1,2 of the present utility model is under actually used (charge, electric discharge etc.) state, even if having the gas savings of generation and making the situation of intrinsic pressure rising, also conducting can be cut off after this intrinsic pressure rising, gas can't be produced further, it is therefore possible to prevent the rupturing of external packing body.
Industrial applicibility
The concrete example of electrical storage device of the present utility model such as can be exemplified as:
The electrochemical appliance of lithium secondary battery (lithium ion battery, lithium polymer battery etc.) etc.,
Lithium-ion capacitance,
Double layer capacitor etc..
This application claims that filed in 28 days April in 2015, Japanese Patent goes out to be willing to Patent 2015-91042 priority, directly constitutes the part of the application by disclosure of which.
Term as used herein and explanation are the contents for this utility model embodiment is described, do not constitute this utility model and limit.As long as within the scope of the claims, without departing from the technological thought of claim, this utility model allows to make any design and changes.
Claims (12)
1. an electrical storage device, it is characterised in that
Possess apparatus main body portion and house two external packing bodies in this apparatus main body portion,
Described external packing body has metal foil layer and is laminated on a face of this metal foil layer
Heat sealability resin bed, is provided with the most described in the local in the one face of described metal foil layer
The conductive part that heat sealability resin bed covers,
By make heat sealability resin bed the most each other relative in the way of configure described two
Space between external packing body houses described apparatus main body portion, the periphery of described two external packing bodies
The heat sealability resin bed in portion engages to each other and seals,
The positive electrical in described apparatus main body portion is connected to the conductive part of a described external packing body, institute
The negative electricity stating apparatus main body portion is connected to the conductive part of another described external packing body, described just
Pole is in, with at least one electrode in negative pole, the contact condition contacted relative to described conductive part
And carry out described electrical connection.
Electrical storage device the most according to claim 1, wherein,
Described external packing body also has the thermostability in another face being laminated in described metal foil layer
Resin bed, is provided with in the local in another face of described metal foil layer not by described heat-resistant resin
The portion of terminal that layer covers.
Electrical storage device the most according to claim 2, wherein,
Described heat-resistant resin layer is made up of biaxial stretching polyamide film.
Electrical storage device the most according to claim 2, wherein,
Described heat-resistant resin layer is made up of biaxially oriented polyester film.
Electrical storage device the most according to claim 2, wherein,
Described heat-resistant resin layer is by bonding biaxial stretching polyamide film and biaxially oriented polyester film
The multilayer film formed is constituted.
Electrical storage device the most according to claim 1 and 2, wherein,
Described external packing body forms leading of electrical connection by being in described contact condition comprising
The region in electricity portion forms the depressed part to side, described apparatus main body portion depression.
Electrical storage device the most according to claim 6, wherein,
The bottom surface of described depressed part and side angulation are more than 90 degree.
Electrical storage device the most according to claim 6, wherein,
When the bottom surface of described depressed part and side angulation are set to " α ", meet 100 °
≤α≤160°。
Electrical storage device the most according to claim 6, wherein,
The plan view shape of described depressed part is circular or substantially elliptical.
Electrical storage device the most according to claim 1 and 2, wherein,
Formed by being in described contact condition the described conductive part of electrical connection and electrode by
The coating layer formed by applying conductive compositions is in the state of contacting with each other.
11. electrical storage devices according to claim 1 and 2, wherein,
Contain in the space in described apparatus main body portion intrinsic pressure be below atmospheric pressure.
12. electrical storage devices according to claim 11, wherein,
Less than under the air pressure atmosphere of atmospheric pressure, carry out the heat sealability resin bed of described circumference
Joint to each other.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015-091042 | 2015-04-28 | ||
| JP2015091042A JP6816937B2 (en) | 2015-04-28 | 2015-04-28 | Power storage device |
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| CN205790079U true CN205790079U (en) | 2016-12-07 |
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| CN201620368803.7U Active CN205790079U (en) | 2015-04-28 | 2016-04-27 | Electrical storage device |
| CN201610270839.6A Pending CN106098969A (en) | 2015-04-28 | 2016-04-27 | Electrical storage device |
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| CN201610270839.6A Pending CN106098969A (en) | 2015-04-28 | 2016-04-27 | Electrical storage device |
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| JP (1) | JP6816937B2 (en) |
| KR (1) | KR102537627B1 (en) |
| CN (2) | CN205790079U (en) |
| TW (1) | TWI708416B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106098969A (en) * | 2015-04-28 | 2016-11-09 | 昭和电工包装株式会社 | Electrical storage device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP6861016B2 (en) * | 2015-11-19 | 2021-04-21 | 三洋化成工業株式会社 | Lithium ion battery |
| CN106784418B (en) * | 2016-12-16 | 2020-01-10 | 苏州福斯特光伏材料有限公司 | Anti-corrosion treatment layer and application thereof in lithium battery flexible packaging material |
| CN110998951A (en) * | 2017-08-10 | 2020-04-10 | 仓敷纺绩株式会社 | Electrode sheet manufacturing method, all-solid-state battery, and all-solid-state battery manufacturing method |
| CN115066791A (en) * | 2020-02-07 | 2022-09-16 | 大日本印刷株式会社 | Power storage device and method for manufacturing power storage device |
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| JP2519576B2 (en) * | 1990-06-04 | 1996-07-31 | 日本電池株式会社 | Storage battery with spare battery |
| JP2856365B2 (en) * | 1991-03-15 | 1999-02-10 | 株式会社村田製作所 | Flat power supply element |
| US5358539A (en) * | 1992-10-29 | 1994-10-25 | Valence Technology, Inc. | Method for making a battery assembly |
| JP4270599B2 (en) * | 1998-04-02 | 2009-06-03 | 大日本印刷株式会社 | Thin battery |
| JP4132588B2 (en) * | 2000-06-16 | 2008-08-13 | Ｔｄｋ株式会社 | Electrochemical devices |
| JP2003123832A (en) * | 2001-10-11 | 2003-04-25 | Nec Tokin Corp | Laminate film-covered battery device and production process thereof |
| JP2003208885A (en) * | 2002-01-11 | 2003-07-25 | Mitsubishi Cable Ind Ltd | Sheet battery |
| JP2005044523A (en) * | 2003-07-22 | 2005-02-17 | Toyota Motor Corp | Current break structure of secondary battery and secondary battery having the structure |
| JP3882818B2 (en) * | 2004-01-15 | 2007-02-21 | ソニー株式会社 | Battery pack |
| JP2007157678A (en) | 2005-05-23 | 2007-06-21 | Matsushita Electric Ind Co Ltd | Safety mechanism for laminate battery |
| JP4766057B2 (en) * | 2008-01-23 | 2011-09-07 | ソニー株式会社 | Nonaqueous electrolyte battery and method for producing nonaqueous electrolyte battery |
| US20120052341A1 (en) * | 2010-09-01 | 2012-03-01 | Duk-Jung Kim | Rechargeable battery |
| JPWO2012141191A1 (en) * | 2011-04-12 | 2014-07-28 | Jsr株式会社 | Power storage device |
| JP5840923B2 (en) * | 2011-11-07 | 2016-01-06 | 昭和電工パッケージング株式会社 | Battery exterior body, method for producing battery exterior body, and lithium secondary battery |
| JP6426895B2 (en) * | 2013-05-31 | 2018-11-21 | 昭和電工パッケージング株式会社 | Battery exterior material and battery |
| JP6816937B2 (en) * | 2015-04-28 | 2021-01-20 | 昭和電工パッケージング株式会社 | Power storage device |
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2015
- 2015-04-28 JP JP2015091042A patent/JP6816937B2/en active Active
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2016
- 2016-04-11 KR KR1020160044211A patent/KR102537627B1/en active IP Right Grant
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106098969A (en) * | 2015-04-28 | 2016-11-09 | 昭和电工包装株式会社 | Electrical storage device |
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|---|---|
| JP6816937B2 (en) | 2021-01-20 |
| KR102537627B1 (en) | 2023-05-30 |
| TWI708416B (en) | 2020-10-21 |
| KR20160128214A (en) | 2016-11-07 |
| CN106098969A (en) | 2016-11-09 |
| TW201639226A (en) | 2016-11-01 |
| JP2016207592A (en) | 2016-12-08 |
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