WO2020067131A1 - Power storage device - Google Patents
Power storage device Download PDFInfo
- Publication number
- WO2020067131A1 WO2020067131A1 PCT/JP2019/037535 JP2019037535W WO2020067131A1 WO 2020067131 A1 WO2020067131 A1 WO 2020067131A1 JP 2019037535 W JP2019037535 W JP 2019037535W WO 2020067131 A1 WO2020067131 A1 WO 2020067131A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve device
- container
- package
- heat
- valve
- Prior art date
Links
- 238000003860 storage Methods 0.000 title claims abstract description 80
- 239000011347 resin Substances 0.000 claims abstract description 179
- 229920005989 resin Polymers 0.000 claims abstract description 179
- 239000000463 material Substances 0.000 claims abstract description 68
- 230000004888 barrier function Effects 0.000 claims abstract description 41
- 230000002093 peripheral effect Effects 0.000 claims description 82
- 238000009423 ventilation Methods 0.000 claims description 47
- -1 polytetrafluoroethylene Polymers 0.000 claims description 30
- 230000007246 mechanism Effects 0.000 claims description 26
- 238000005304 joining Methods 0.000 claims description 24
- 239000012528 membrane Substances 0.000 claims description 16
- 238000002844 melting Methods 0.000 claims description 15
- 230000008018 melting Effects 0.000 claims description 15
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 9
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 9
- 235000014443 Pyrus communis Nutrition 0.000 claims description 7
- 238000004806 packaging method and process Methods 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 239000000758 substrate Substances 0.000 claims 2
- 239000010410 layer Substances 0.000 description 231
- 239000005022 packaging material Substances 0.000 description 94
- 239000007789 gas Substances 0.000 description 64
- 239000012790 adhesive layer Substances 0.000 description 25
- 239000004743 Polypropylene Substances 0.000 description 20
- 229910052782 aluminium Inorganic materials 0.000 description 20
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 20
- 229910052751 metal Inorganic materials 0.000 description 20
- 239000002184 metal Substances 0.000 description 20
- 229920001155 polypropylene Polymers 0.000 description 20
- 238000004519 manufacturing process Methods 0.000 description 19
- 238000007789 sealing Methods 0.000 description 19
- 239000000853 adhesive Substances 0.000 description 16
- 230000001070 adhesive effect Effects 0.000 description 16
- 239000011888 foil Substances 0.000 description 16
- 239000010935 stainless steel Substances 0.000 description 15
- 229910001220 stainless steel Inorganic materials 0.000 description 15
- 238000000034 method Methods 0.000 description 14
- 230000037303 wrinkles Effects 0.000 description 13
- 230000004048 modification Effects 0.000 description 12
- 238000012986 modification Methods 0.000 description 12
- 229920000098 polyolefin Polymers 0.000 description 11
- 238000010586 diagram Methods 0.000 description 10
- 229920006284 nylon film Polymers 0.000 description 10
- 239000013078 crystal Substances 0.000 description 9
- 239000003990 capacitor Substances 0.000 description 8
- 230000005611 electricity Effects 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 239000008151 electrolyte solution Substances 0.000 description 7
- 230000004927 fusion Effects 0.000 description 7
- 229920001225 polyester resin Polymers 0.000 description 6
- 239000004645 polyester resin Substances 0.000 description 6
- 229920000139 polyethylene terephthalate Polymers 0.000 description 6
- 239000005020 polyethylene terephthalate Substances 0.000 description 6
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- 229910001416 lithium ion Inorganic materials 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 229920006267 polyester film Polymers 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 229920006122 polyamide resin Polymers 0.000 description 3
- 229920001721 polyimide Polymers 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000008064 anhydrides Chemical class 0.000 description 2
- 229920001400 block copolymer Polymers 0.000 description 2
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000007872 degassing Methods 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
- 229910052809 inorganic oxide Inorganic materials 0.000 description 2
- 239000012948 isocyanate Substances 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000004431 polycarbonate resin Substances 0.000 description 2
- 229920005668 polycarbonate resin Polymers 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000009719 polyimide resin Substances 0.000 description 2
- 229920005862 polyol Polymers 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- 229920005604 random copolymer Polymers 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 241000405070 Percophidae Species 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004697 Polyetherimide Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000004840 adhesive resin Substances 0.000 description 1
- 229920006223 adhesive resin Polymers 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000006757 chemical reactions by type Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009820 dry lamination Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 229920001038 ethylene copolymer Polymers 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000005001 laminate film Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229920000092 linear low density polyethylene Polymers 0.000 description 1
- 239000004707 linear low-density polyethylene Substances 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 229920001179 medium density polyethylene Polymers 0.000 description 1
- 239000004701 medium-density polyethylene Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- HTQOEHYNHFXMJJ-UHFFFAOYSA-N oxosilver zinc Chemical compound [Zn].[Ag]=O HTQOEHYNHFXMJJ-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920001601 polyetherimide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920005629 polypropylene homopolymer Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000000935 solvent evaporation Methods 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- 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
- H01M50/14—Primary casings; Jackets or wrappings for protecting against damage caused by external factors
- H01M50/141—Primary casings; Jackets or wrappings for protecting against damage caused by external factors for protecting against humidity
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/24—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants
- B65D81/26—Adaptations for preventing deterioration or decay of contents; Applications to the container or packaging material of food preservatives, fungicides, pesticides or animal repellants with provision for draining away, or absorbing, or removing by ventilation, fluids, e.g. exuded by contents; Applications of corrosion inhibitors or desiccators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/14—Arrangements or processes for adjusting or protecting hybrid or EDL capacitors
- H01G11/16—Arrangements or processes for adjusting or protecting hybrid or EDL capacitors against electric overloads, e.g. including fuses
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/78—Cases; Housings; Encapsulations; Mountings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
- H01G2/10—Housing; Encapsulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
- H01G2/14—Protection against electric or thermal overload
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/08—Housing; Encapsulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/08—Housing; Encapsulation
- H01G9/12—Vents or other means allowing expansion
-
- 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
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/105—Pouches or flexible bags
-
- 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
- H01M50/30—Arrangements for facilitating escape of gases
-
- 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
Definitions
- the present disclosure relates to a package with a valve device and a power storage device.
- a packaging material (outer packaging material) is an indispensable member for sealing the power storage device elements such as electrodes and electrolytes.
- metal exterior materials have been frequently used as exterior materials for power storage devices.
- a concave portion is generally formed by cold molding, and an electricity storage device element such as an electrode or an electrolytic solution is arranged in a space formed by the concave portion.
- an electricity storage device element such as an electrode or an electrolytic solution is arranged in a space formed by the concave portion.
- Patent Document 1 discloses an electric double layer capacitor cell using a capacitor valve having a predetermined structure.
- a power storage device provided with a valve device is known as a package with a valve device, for example, in preparation for generating gas inside the power storage device.
- the electrical storage device using the film-shaped exterior material has a lower mechanical strength than the electrical storage device using the metal container as the exterior material. Then, as a result of examination by the present inventors, gas is generated inside the electricity storage device to which the valve device is attached, the internal pressure is increased, and the film-shaped exterior material is removed until the gas is released from the valve device to the outside.
- a strong force is applied from the inside to the power storage device used, wrinkles are formed in the exterior material, and large wrinkles are formed in the exterior material after gas is released to the outside from the valve device, or the exterior material is significantly deformed It has been found that such a problem occurs. When the exterior material is greatly deformed, there is a risk that the position of the contents cannot be fixed.
- a main object of the present invention is to provide a package with a valve device in which gas is released from the valve device to the outside at an appropriate timing.
- the present inventors conducted intensive studies to solve the above-mentioned problems.
- at least a base material layer, a barrier layer, and a heat-fusible resin layer are formed in this order, and the container body is configured to house contents therein, and separately from the housing body,
- a base body, a barrier layer and a heat-fusible resin layer are constituted by a laminate having in this order, the contents are stored inside, a container, A valve device communicating with the inside of the container, The valve device is configured to reduce the pressure when the pressure inside the container increases due to gas generated inside the container, A package with a valve device, wherein the maximum strain in the thickness direction of the container after the pressure inside the container increases and the gas inside the container is released from the valve device to the outside is less than 30%. body.
- a gas is generated inside a package with a valve device, and when the internal pressure increases, a large wrinkle is formed on the exterior material after the release of the gas, or a problem that the shape is significantly deformed. It is possible to provide a package with a valve device in which gas is released from the valve device to the outside at an appropriate timing before the occurrence.
- FIG. 2 is a plan view of a package with a valve device according to the first embodiment.
- FIG. 2 is a sectional view taken along line II-II of FIG. 1. It is a figure showing a container. It is a figure showing an example of section structure of packaging material.
- FIG. 2 is a plan view of the valve device according to Embodiment 1.
- FIG. 6 is a sectional view taken along the line VI-VI in FIG. 5.
- FIG. 7 is a sectional view taken along line VII-VII of FIG. 5.
- FIG. 8 is a cross-sectional view taken along the line VIII-VIII of FIG. 1 and is a diagram for explaining a mounting state of the valve device. It is a flowchart which shows the manufacturing procedure of the package body with a valve device.
- FIG. 10 is a plan view of a valve device according to Embodiment 2. It is XII-XII sectional drawing of FIG.
- FIG. 13 is a plan view of a valve device according to Embodiment 3.
- FIG. 14 is a sectional view taken along the line XIV-XIV in FIG. 13.
- 13 is a plan view of a valve device according to Embodiment 4.
- FIG. 16 is a sectional view taken along the line XVI-XVI in FIG. 15.
- 15 is a plan view of a valve device according to Embodiment 5.
- FIG. 15 is a plan view of a valve device according to Embodiment 6.
- FIG. 10 is a plan view of a valve device according to Embodiment 2. It is XII-XII sectional drawing of FIG.
- FIG. 13 is a plan view of a valve device according to Embodiment 3.
- FIG. 14 is a sectional view taken along the line XIV-XIV in FIG.
- FIG. 19 is a sectional view taken along line XIX-XIX in FIG. 18.
- 15 is a plan view of a valve device according to Embodiment 7.
- FIG. FIG. 21 is a sectional view taken along the line XXI-XXI in FIG. 20. It is a figure showing a situation at the time of attachment to a container of a valve device. It is a figure showing a section of a valve device in modification 1. It is a figure showing a section of a valve device in modification 2. It is a figure showing a section of a valve device in modification 3. It is a top view of the valve device in the modification 4. It is XXVII-XXVII sectional drawing of FIG. It is a top view of the packaging material in the modification 5.
- FIG. 29 is a sectional view taken along the line XXIX-XXIX of FIG. 28. It is a schematic diagram of the valve device used in the Example. It is a schematic diagram which shows the crystal grain in the cross section of the thickness direction of an aluminum foil. It is a figure which shows the operation
- a package with a valve device includes a container and a valve device.
- the container is constituted by a laminate having at least a base material layer, a barrier layer, and a heat-fusible resin layer in this order.
- the container stores the contents therein.
- the valve device communicates with the inside of the container.
- the valve device is configured to reduce the pressure when the pressure inside the container increases due to the gas generated inside the container. Furthermore, the maximum strain in the thickness direction of the container after the pressure inside the container increases and the gas inside the container is released from the valve device to the outside is less than 30%. That is, in the package with a valve device of the present disclosure, the opening pressure of the valve device is set such that the maximum strain in the thickness direction is less than 30%.
- the package with a valve device has such features, and when gas is generated inside the package and the internal pressure increases, a large wrinkle occurs on the exterior material after the gas is released.
- the gas is discharged from the valve device to the outside at an appropriate timing before a problem is caused or the shape is largely deformed.
- the container is constituted by a laminate having a base material layer, a barrier layer, and a heat-fusible resin layer in this order.
- a valve device is attached to the container, and the maximum thickness in the thickness direction of the container after the pressure inside the container increases and the gas inside the container is released from the valve device to the outside.
- the strain (hereinafter, sometimes referred to as “maximum strain X”) is set to less than 30%.
- maximum strain X is set to less than 30%.
- the gas is released from the valve device to the outside at an appropriate timing before a large wrinkle is formed in the container after the gas is released or a problem that the shape is largely deformed occurs. That is, when the pressure inside the package with the valve device rises, the change in the thickness of the container is observed, and the opening pressure of the valve device is increased so that the valve device is opened before the thickness is reduced by 30%.
- the opening pressure of the valve device is increased so that the valve device is opened before the thickness is reduced by 30%.
- the upper limit of the maximum strain X is preferably about 28% or less, more preferably 27% or less.
- the lower limit of the maximum strain X is preferably about 2% or more, more preferably about 4% or more.
- a preferable range of the maximum strain X is about 2% to less than 30%, and about 4% to 28%.
- the maximum strain X of the container is measured as follows. First, two identical packages to be measured for the maximum strain X are prepared. Next, lines are drawn in a grid pattern at 1 mm intervals on the outer surface of the package (ie, the outer surface of the container). At this time, the positions of the lines drawn on the outer surfaces of the two packages are the same. Next, for one package, the valve device is sealed to provide another ventilation path in the container, or the valve function is removed from the valve device to form a ventilation path, and air is supplied from the ventilation path to the inside of the package. The package is fed and the internal pressure is increased to 1 MPa to expand the package. Next, the air is removed from the air passage, and the pressure is reduced to normal pressure.
- the package is cut along the lattice-shaped line, and the thickness of the cross section is measured.
- the package is cut along the above-mentioned grid-like line, and the thickness of the cross section is measured.
- the portion having the smallest thickness is defined as the maximum strain point, and the reduction rate (%) of the thickness at the maximum strain point is defined as the maximum strain X ( %).
- the maximum strain X is 30%. is there.
- the valve device has a secondary side located on the outer side of the container (that is, the external environment) and a primary side located on the inside of the container, and is provided with a gas generated inside the container.
- a secondary side located on the outer side of the container (that is, the external environment) and a primary side located on the inside of the container, and is provided with a gas generated inside the container.
- the pressure inside the container increases, the pressure is reduced (that is, the gas generated inside the container is released from the primary side to the secondary side).
- the differential pressure between the primary side and the secondary side of the valve device may be set in accordance with the type of the package within the above-mentioned range.
- 015 MPa or more preferably about 0.1 MPa or more
- the upper limit is about 0.6 MPa or less, preferably about 0.3 MPa
- the preferable range is about 0.015 to 0.6 MPa, 0.1 to 0.5 MPa.
- the differential pressure between the primary side and the secondary side of the valve device is set in a normal temperature (25 ° C.) environment.
- valve device ⁇ Method of measuring differential pressure between primary and secondary sides of valve device>
- the valve device is installed on a measuring jig made of metal, a compressed air cylinder is installed on the primary side of the jig via a small pressure gauge, and a rubber tube is installed on the secondary side. Installed in At this time, it is confirmed in advance that there is no leakage from the jig or the contact. Air is gradually fed into the valve device from the air cylinder on the primary side, and the pressure at which bubbles start to be generated from the rubber tube of the water tank is read by a pressure gauge, and the differential pressure between the primary side and the secondary side of the valve device is measured.
- the set pressure inside the container is preferably set to a certain pressure or less.
- the set value of the internal pressure is appropriately set according to the type of the package with the valve device, but is preferably about 0.1 MPa or less, more preferably about 1.0 ⁇ 10 ⁇ 2 MPa or less.
- 1.0 ⁇ 10 ⁇ 10 MPa or more, and the preferable range of the internal pressure is about 1.0 ⁇ 10 ⁇ 10 to 0.1 MPa, and 1.0 ⁇ 10 ⁇ 10 to 1.0 ⁇ 10 ⁇ 2. MPa.
- the differential pressure between the primary and secondary sides of the valve device can be set by a known method.
- materials, shapes, and sizes of members for example, a ball, a valve seat (for example, an O-ring), a spring, and a vent) to be described later that constitute a valve mechanism of the valve device, and a force of pressing the ball by the spring.
- the differential pressure can be adjusted.
- the valve device is preferably a check valve. That is, in the package with the valve device according to the present disclosure, when the internal pressure increases, a large wrinkle is formed on the exterior material after the gas is released, or an appropriate timing before a problem that the shape is largely deformed occurs. Since the gas is released from the valve device to the outside, a check valve that can be used repeatedly even after the gas is released is preferable as the valve device.
- the container when the container bursts may be stored.
- the pressure inside the body (that is, the bag-breaking internal pressure) can be, for example, larger than the differential pressure between the primary side and the secondary side of the valve device, and can be, for example, in the range of 0.3 MPa or more and 1 MPa or less. .
- the package housing with a valve device of the present disclosure is at least, because it is configured by a laminate having a base layer, a barrier layer, and a heat-fusible resin layer in this order, considering the thickness and strength of the housing, As for the internal pressure of the bag breakage, the above range is appropriate.
- the internal pressure of the bag is adjusted by the sealing strength of the heat-fusible resin layer, the thickness of the package, and the like.
- the internal pressure of the bag with the valve device is measured by the method described in Examples.
- valve device attached to the package of the present disclosure, the structure of the package, and the like will be described.
- the valve device preferably includes a first portion and a second portion.
- the first portion is a portion in which a valve mechanism for reducing the pressure when the pressure inside the container increases due to the gas generated inside the container is formed inside.
- the second portion is a portion in which a ventilation path for guiding gas generated inside the container to the valve mechanism is formed.
- the container of the package of the present disclosure is constituted by a laminate having at least a base material layer, a barrier layer, and a heat-fusible resin layer in this order.
- a heat-fusible resin layer faces the periphery of the container, and a peripheral joint formed by fusing the opposing heat-fusible resin layers to each other is formed at the periphery of the container.
- the first portion is preferably located outside the edge of the peripheral joint. Further, it is preferable that at least a part of the second portion is sandwiched between the heat-fusible resin layers at the peripheral joining portion.
- this package with a valve device it is the second portion of the valve device that is sandwiched between the heat-fusible resin layers at the peripheral joint, and the first portion of the valve device is sandwiched between the heat-fusible resin layers. Preferably not.
- this package with a valve device greater pressure and heat are not applied to the first portion than to the second portion during fusion of the opposing heat-fusible resin layers.
- this valve device it is possible to suppress the failure of the valve mechanism in the first portion caused by the pressure and heat applied when the opposing heat-fusible resin layers are fused.
- the length of the first portion is longer than the length of the second portion, and a step may be formed at a boundary between the first portion and the second portion.
- the first portion is longer than the second portion at least in the thickness direction of the package with the valve device, and a step is formed at a boundary between the first portion and the second portion.
- a step is formed at a boundary between the first portion and the second portion.
- the valve in the portion of the peripheral joint where the second portion is sandwiched is compared with a case where no step is provided at the boundary between the first portion and the second portion.
- the difference between the length in the thickness direction of the package with the device and the length in the thickness direction of the package with the valve device in a portion of the peripheral joining portion where the second portion is not sandwiched is small. Therefore, in the portion where the second portion is sandwiched between the peripheral edge joining portions, the heat-fusible resin layers are fused to each other without applying excessive heat and pressure to the heat-fusible resin layers.
- the decrease in insulation property is a phenomenon in which a current flows between a barrier (metal) layer and a content (for example, an electrolytic solution) due to partial thinning or cracking of the heat-fusible resin.
- the length of the second portion in the width direction of the package with the valve device may be longer than the length of the second portion in the thickness direction of the package with the valve device.
- the length of the second portion in the thickness direction of the package with a valve device is shorter than when the cross-sectional shape of the second portion is a perfect circle (the same area). That is, in the package with the valve device, the length in the thickness direction of the package with the valve device in the portion where the second portion is sandwiched in the peripheral joint portion, and the second portion in the peripheral joint portion is sandwiched. The difference with the length in the thickness direction of the package with the valve device in the portion where there is not is small. Therefore, in the portion where the second portion is sandwiched between the peripheral edge joining portions, the heat-fusible resin layers are fused to each other without applying excessive heat and pressure to the heat-fusible resin layers. As a result, according to the package with a valve device, it is possible to suppress a decrease in seal strength and a decrease in insulation due to the thinning of the heat-fusible resin layer.
- the second portion has a wing-like extending end portion that is formed to be thinner toward an end portion in the width direction of the package with the valve device.
- the portion of the peripheral joint where the second portion is not sandwiched is the second portion of the peripheral joint.
- the change in the thickness direction of the packaging body with the valve device at the position where the portion shifts to the sandwiched portion is smooth. Therefore, no excessive force is applied to the laminate at the boundary between the position where the second portion is sandwiched between the heat-fusible resin layers and the position where the second portion is not sandwiched between the heat-fusible resin layers.
- the heat-fusible resin layer can be appropriately fused without applying an excessive amount of heat or pressure. , And a decrease in insulation can be suppressed.
- the cross-sectional shape of the air passage may be circular.
- the length of the cross section of the ventilation path in the width direction of the package with the valve device may be longer than the length of the cross section of the ventilation path in the thickness direction of the package with the valve device.
- the second portion may have a pillar formed in the ventilation path.
- the outer surface of the second portion may be a pear.
- the second portion of the valve device can be firmly fixed to the container as compared with the case where the outer surface of the second portion is smooth.
- At least one ridge extending in the circumferential direction may be formed on the outer surface of the second portion.
- the protruding ridges are securely in contact with the heat-fusible resin layer, they are easily fused to the laminate.
- the ridge extends in the circumferential direction on the outer surface of the second portion. Therefore, according to this package with a valve device, the heat-fusible resin layer and the second portion can be fused in the circumferential direction of the second portion.
- the contact area between the outer surface of the second portion and the heat-fusible resin is larger than in the case where the convex portion is not formed in the second portion. . Therefore, according to the package with the valve device, the second portion of the valve device can be relatively firmly fixed to the container. In addition, by providing a plurality of ridges, it is possible to further firmly fix the second portion to the container.
- the corner of the end opposite to the first portion in plan view may be rounded.
- the end damages the package element with the valve device in the container. Possibilities can be reduced. Further, according to the package with the valve device, it is possible to reduce the possibility that the end portion damages the heat-fusible resin layer and lowers the insulating property of the heat-fusible resin layer inside the container. it can.
- the outer shape of the cross section of the second portion having the center line of the ventilation path as a normal line is a polygon, and the corners of the polygon may be rounded.
- this package with a valve device for example, when the end of the second portion opposite to the first portion is located inside the container, the portion of the second portion located in the container. Can reduce the possibility of damaging the contents (for example, the electricity storage device element) in the housing, and the portion of the second portion sandwiched between the heat-fusible resin layers serves as the heat-fusible resin layer. Damage and the possibility of lowering the insulating property of the heat-fusible resin layer can be reduced. Further, according to the package with the valve device, for example, when the end of the second portion opposite to the first portion is sandwiched by the heat-fusible resin layer, the second portion is heated. It is possible to reduce the possibility of damaging the fusible resin layer and lowering the insulating property of the thermally fusible resin layer.
- each of the first and second portions is made of a different material, and the melting point of the material of the first portion may be higher than the melting point of the material of the second portion.
- the material of the first portion and the second portion is not particularly limited, and for example, resins such as polypropylene (PP), fluorine resin, polyester resin, polyimide resin, polycarbonate resin, acrylic resin, stainless steel, Metals such as aluminum are mentioned.
- the melting point of the material of the first portion is the melting point of the material of the second portion. Therefore, the first portion is less likely to be deformed by heat. Therefore, according to the package with the valve device, it is possible to suppress the failure of the valve mechanism in the first portion at the time of fusing the opposing heat-fusible resin layers.
- a plane may be formed on at least a part of the outer surface of at least one of the first and second portions.
- a package with a valve device is a power storage device in which a power storage device element is contained as a content in a container.
- the package with a valve device and the valve device of the present disclosure are not limited to the following.
- FIG. 1 is a plan view of package 10 with a valve device according to the first embodiment.
- FIG. 2 is a sectional view taken along line II-II of FIG.
- the positive electrode and the negative electrode of the tab 300 are arranged on opposite sides.
- the package with a valve device is a power storage device, a large number of power storage devices are connected in series and used at a high voltage. This is a form in consideration for electric vehicles such as electric vehicles and hybrid vehicles.
- the package 10 with a valve device includes a container 100, contents 400, a tab 300, a tab film 310, and a valve device 200.
- the container 100 has a rectangular shape in a plan view, and the valve device 200 is located at a position different from the side where the tab 300 of the container 100 exists.
- the container 100 is not limited to a rectangular shape in plan view, and may be, for example, a circular shape in plan view, an L-shape in plan view, or an irregular shape in plan view.
- the maximum strain X of the container 100 is measured by the above-described measuring method, regardless of the shape of the container 100, the maximum strain X can be confirmed by the above method. it can.
- the valve device 200 is preferably provided on the periphery of the container 100 in order to stack the cells into a module. Furthermore, when the valve device 200 is attached to the same side as the side where the tab 300 is located in the container 100 having a rectangular shape in a plan view, the tab 300 and the valve device 200 can be attached at the same time. I have. On the other hand, as shown in FIG. 1, when the valve device 200 is attached to a side different from the side where the tab 300 is located, when the gas is discharged from the valve device 200 to the outside, the gas adheres to the tab 300 and the connection of the tab 300 is performed. And the like.
- the container 100 includes the packaging materials 110 and 120. At the periphery of the container 100, the packaging materials 110 and 120 are heat-sealed to form a peripheral joint 130. That is, in the peripheral joint portion 130, the packaging materials 110 and 120 are fused to each other.
- the packaging materials 110 and 120 will be described later in detail.
- the content 400 is, for example, a power storage member (power storage device element) such as a lithium ion power storage device or a capacitor.
- the contents 400 are housed inside the housing 100.
- gas may be generated in the container 100.
- gas may be generated in the container 100 due to a chemical reaction in the capacitor.
- the tab 300 is a metal terminal used for input / output of electric power when the content 400 is a power storage device element.
- One end of the tab 300 is electrically connected to the electrode (positive electrode or negative electrode) of the content 400 (electric storage device element), and the other end protrudes outward from the edge of the container 100.
- the metal material forming the tab 300 is, for example, aluminum, nickel, copper or the like.
- the tab 300 connected to the positive electrode is usually made of aluminum or the like, and the tab 300 connected to the negative electrode is usually copper, nickel, or the like. Etc.
- two tabs 300 are included. One tab 300 is sandwiched between packaging materials 110 and 120 via a tab film 310 at an end of the container 100 in the direction of the arrow L. The other tab 300 is sandwiched between packaging materials 110 and 120 via a tab film 310 at an end of the container 100 in the direction of arrow R.
- the tab film 310 is an adhesive protective film, and is configured to adhere to both the packaging materials 110 and 120 and the tab 300 (metal). By interposing the tab film 310, the metal tab 300 can be fixed with the packaging materials 110 and 120. Further, when the tab film 310 is used particularly at a high voltage, it is preferable that the tab film 310 contains a heat-resistant layer or a heat-resistant component and has a short-circuit preventing function.
- the valve device 200 communicates with the inside of the container 100, and when the pressure in the container 100 becomes equal to or higher than a predetermined value due to the gas generated in the container 100, the gas in the container 100. To the outside.
- the casing of the valve device 200 is preferably made of a material that directly adheres to the innermost layers of the packaging materials 110 and 120, and a resin having the same heat-fusing property as the innermost layers of the packaging materials 110 and 120, for example, polypropylene (PP). And the like. If a different material other than PP is used for reasons such as heat resistance, a method in which a film that can be bonded to both the different material and PP is interposed and sealed as in the case of the tab film used for the tab is effective. .
- the end of the valve device 200 in the direction of arrow B is sandwiched between the packaging materials 110 and 120 at the end of the container 100 in the direction of arrow F. The valve device 200 will be described later in detail.
- valve device 200 In the package 10 with a valve device according to the first embodiment, various structural devices are employed to attach the valve device 200 to the container 100.
- the configuration of the container 100, the configuration of the valve device 200, the state of attachment of the valve device 200 to the container 100, and the method of manufacturing the package 10 with the valve device will be described in order.
- each of the arrows LRUDFFB is common in each drawing.
- the arrow LR direction is also referred to as “the width direction of the package 10 with the valve device”
- the arrow UD direction is also referred to as “the thickness direction of the package 10 with the valve device”.
- FIG. 3 is a diagram illustrating the container 100.
- the container 100 includes packaging materials 110 and 120.
- Each of the packaging materials 110 and 120 is formed of a so-called laminate film, and has a substantially identical rectangular shape in plan view.
- the packaging material 110 includes a molded portion 112 molded so as to form the space S1, and a flange portion 114 extending from the molded portion 112 in the arrow FB direction and the arrow LR direction.
- the surface in the direction of the arrow U is open.
- the contents 400 (FIG. 1) are arranged in the space S1 through the open surface.
- FIG. 4 is a diagram showing an example of a cross-sectional structure of the packaging materials 110 and 120.
- each of the packaging materials 110 and 120 is a laminate in which a base material layer 31, an adhesive layer 32, a barrier layer 33, an adhesive layer 34, and a heat-fusible resin layer 35 are laminated in this order. It is.
- each of the packaging materials 110 and 120 does not necessarily need to include each layer shown in FIG. 4, as long as it has at least the base layer 31, the barrier layer 33, and the heat-fusible resin layer 35 in this order. Good.
- the base material layer 31 is the outermost layer
- the heat-fusible resin layer 35 is the innermost layer.
- the heat-fusible resin layer located at the periphery of each of the packaging materials 110 and 120 with the contents 400 (FIG. 2) arranged in the space S1 (FIG. 3). 35 are thermally fused to form a peripheral joint 130
- the contents 400 are sealed in the container 100
- the valve device 200 is fused and fixed to the peripheral joint 130
- the tab 300 Is also fixed by fusing to the peripheral joining portion 130 via the tab film 310.
- the thickness of the packaging materials 110 and 120 is, for example, about 50 to 250 ⁇ m, preferably about 90 to 200 ⁇ m.
- the base material layer 31 is a layer that functions as a base material of the packaging materials 110 and 120, and is a layer that forms the outermost layer side of the container 100.
- the material for forming the base material layer 31 is not particularly limited as long as it has insulating properties.
- Examples of the material forming the base layer 31 include polyester, polyamide, epoxy, acrylic, fluororesin, polyurethane, silicon resin, phenol, polyetherimide, polyimide, polycarbonate, and mixtures and copolymers thereof.
- the base layer 31 may be, for example, a resin film formed of the above resin, or may be formed by applying the above resin.
- the resin film may be an unstretched film or a stretched film. Examples of the stretched film include a uniaxially stretched film and a biaxially stretched film, and a biaxially stretched film is preferable.
- the base material layer 31 may be a single layer, or may be composed of two or more layers.
- the base layer 31 may be a laminate in which a resin film is laminated with an adhesive or the like, or may be formed by co-extruding a resin and forming two or more layers. It may be a laminated body of a resin film obtained. Further, a laminate of two or more resin films obtained by co-extrusion of a resin may be used as the base material layer 31 without stretching, or may be used as the base material layer 31 by uniaxial stretching or biaxial stretching.
- the laminate of the resin film in which the base material layer 31 is two or more layers
- a laminate of a polyester film and a nylon film a laminate of two or more nylon films, a laminate of two or more polyester films
- Preferred are a laminate of a stretched nylon film and a stretched polyester film, a laminate of two or more stretched nylon films, and a laminate of two or more stretched polyester films.
- the base layer 31 is a laminate of a two-layer resin film, a laminate of a polyester resin film and a polyester resin film, a laminate of a polyamide resin film and a polyamide resin film, or a laminate of a polyester resin film and a polyamide resin film.
- a laminate is preferable, and a laminate of a polyethylene terephthalate film and a polyethylene terephthalate film, a laminate of a nylon film and a nylon film, or a laminate of a polyethylene terephthalate film and a nylon film is more preferable. Further, it is preferable that the polyester resin is located in the outermost layer of the base material layer 31.
- the thickness of the base layer 31 is, for example, about 3 to 50 ⁇ m, preferably about 10 to 35 ⁇ m.
- the adhesive layer 32 is a layer that is disposed as necessary on the base layer 31 in order to impart adhesion to the base layer 31. That is, the adhesive layer 32 is provided between the base layer 31 and the barrier layer 33 as needed.
- the adhesive layer 32 is formed of an adhesive capable of bonding the base layer 31 and the barrier layer 33.
- the adhesive used to form the adhesive layer 32 may be a two-part curable adhesive or a one-part curable adhesive.
- the bonding mechanism of the adhesive used for forming the adhesive layer 32 is not particularly limited, and may be any of a chemical reaction type, a solvent evaporation type, a hot-melt type, and a thermocompression bonding type.
- the thickness of the adhesive layer 32 is, for example, about 1 to 10 ⁇ m, preferably about 2 to 5 ⁇ m.
- the barrier layer 33 is a layer having a function of preventing the invasion of water vapor, oxygen, light, and the like into the package 10 with a valve device, in addition to improving the strength of the packaging materials 110 and 120.
- the metal forming the barrier layer 33 include aluminum, stainless steel, titanium, and the like, and preferably aluminum.
- the barrier layer 33 can be formed of, for example, a metal foil, a metal vapor-deposited film, an inorganic oxide vapor-deposited film, a carbon-containing inorganic oxide vapor-deposited film, and a film provided with these vapor-deposited films. Preferably, it is more preferably formed of aluminum foil.
- the barrier layer is made of, for example, annealed aluminum (JIS H4160: 1994 A8021H-O, JIS H4160: 1994).
- A8079H-O, JIS H4000: 2014 A8021P-O, JIS H4000: 2014 A8079P-O) and the like are more preferably formed of a soft aluminum foil.
- the barrier layer 33 is made of an aluminum foil having an average crystal grain size of 20 ⁇ m or less.
- Such an aluminum foil is excellent in formability.
- the average crystal grain size of the aluminum foil is obtained by observing a cross section in the thickness direction of the aluminum foil with a scanning electron microscope (SEM), and calculating the crystal grain 33a of 100 aluminum alloys located in the field of view in the schematic diagram of FIG. As shown, when the maximum distance x is a straight line distance connecting the leftmost end in the vertical direction with the thickness direction of each crystal grain and the rightmost end in the vertical direction with the thickness direction, the corresponding 100 It means the average value of the maximum diameter x. Since FIG. 31 is a schematic diagram, the drawing is omitted and 100 crystal grains 33a are not drawn.
- the thickness of the barrier layer 33 is not particularly limited as long as it functions as a barrier layer for water vapor or the like, but can be, for example, about 10 to 100 ⁇ m, preferably about 30 to 100 ⁇ m, and more preferably about 20 to 80 ⁇ m.
- the thickness of the barrier layer 33 is preferably about 30 to 100 ⁇ m.
- the adhesive layer 34 is a layer provided as needed between the barrier layer 33 and the heat-fusible resin layer 35 in order to firmly adhere the heat-fusible resin layer 35.
- the adhesive layer 34 is formed of an adhesive capable of adhering the barrier layer 33 and the heat-fusible resin layer 35.
- the composition of the adhesive used to form the adhesive layer 34 is not particularly limited, but is, for example, a resin composition containing an acid-modified polyolefin.
- the acid-modified polyolefin is not particularly limited as long as it is an acid-modified polyolefin, but preferably includes a polyolefin graft-modified with an unsaturated carboxylic acid or an anhydride thereof.
- the thickness of the adhesive layer 34 is, for example, about 1 to 50 ⁇ m, preferably about 2 to 40 ⁇ m.
- the heat-fusible resin layer 35 forms the innermost layer of the container 100.
- the heat-fusible resin layer 35 hermetically seals the contents 400 in the container 100 by heat-sealing the opposing heat-fusible resin layer at the periphery of the container 100.
- the heat-fusible resin covers the barrier layer with a certain thickness or more, the insulation between the electrolytic solution and the metal of the barrier layer can be maintained.
- the resin component used in the heat-fusible resin layer 35 is not particularly limited as long as it can be heat-fused, and is, for example, a polyolefin, an acid-modified polyolefin, or the like.
- polystyrene resin examples include polyethylene such as low-density polyethylene, medium-density polyethylene, high-density polyethylene, and linear low-density polyethylene; homopolypropylene, block copolymers of polypropylene (eg, block copolymers of propylene and ethylene), and random copolymers of polypropylene ( For example, crystalline or amorphous polypropylene such as a random copolymer of propylene and ethylene); terpolymer of ethylene-butene-propylene; Among these polyolefins, polyethylene and polypropylene are preferred.
- the acid-modified polyolefin is not particularly limited as long as it is an acid-modified polyolefin, but preferably includes a polyolefin graft-modified with an unsaturated carboxylic acid or an anhydride thereof.
- the thickness of the heat-fusible resin layer 35 is not particularly limited, but from the viewpoint of enhancing the sealing performance of a medium-sized or large-sized power storage device such as a vehicle-mounted or stationary device, the lower limit is preferably 100 ⁇ m or less. More preferably, the thickness is about 15 to 90 ⁇ m, and further preferably, about 30 to 80 ⁇ m.
- a melting peak is observed in a range of 150 to 165 ° C. when measured by a differential scanning calorimeter.
- Medium- and large-sized power storage devices such as those for in-vehicle use and stationary use, have large capacities. Further, the capacitor is capable of inputting and outputting a large current and a high output. Therefore, these power storage devices tend to generate heat as compared with, for example, a mobile battery and the like, and may have a high installation environment.
- FIG. 5 is a plan view of the valve device 200.
- the valve device 200 includes a valve function unit 210 and a seal mounting unit 220.
- the seal mounting portion 220 is a portion that is fixed by being sandwiched between the packaging materials 110 and 120 (FIG. 2).
- the outer peripheral surface of 220 and the heat-fusible resin layer 35 which is the innermost layer of the packaging materials 110 and 120 are in a state of being fused and joined.
- rounded corners are expressed as “R is formed”.
- R is formed means a state in which the corner is rounded similarly to the case where chamfering is performed, and further, “R” alone is Used to mean radius of rounded corners.
- the sharp corner generated in the manufacturing process of the valve device 200 may be chamfered to round the corner (form R), but the casing of the valve device 200 is formed of a resin molded product. In the case of R, it is also possible to form R without chamfering such as cutting by shaping from the beginning so as to have rounded corners.
- FIG. 6 is a sectional view taken along the line VI-VI in FIG.
- the cross section of each of the valve function part 210 and the seal attachment part 220 is a perfect circle, and a ventilation path A1 is formed inside the seal attachment part 220.
- the cross section of the ventilation path A1 is a perfect circle.
- FIG. 6 shows a case where it has a perfect circular cross section, the cross sectional shape is not particularly limited and may be an elliptical shape, a square shape, or the like.
- the length L2 of the valve function portion 210 in the thickness direction (the direction of the arrow UD) of the package 10 with a valve device is longer than the length L1 of the seal attachment portion 220 in the thickness direction of the package 10 with a valve device. long.
- the length L2 of the valve function part 210 in the width direction (the direction of the arrow LR) of the package 10 with the valve device is longer than the length L1 of the seal attachment portion 220 in the width direction of the package 10 with the valve device. That is, the cross-sectional diameter of the valve function section 210 is longer than the cross-sectional diameter of the seal mounting section 220.
- a step is formed at the boundary between the valve function part 210 and the seal mounting part 220 (FIG. 5).
- valve function unit 210 configured to discharge gas generated in the container 100 (FIG. 1) is provided inside the valve function unit 210.
- the valve function unit 210 includes a valve seat 212, a ball 214, a spring 216, and a membrane 218. That is, the valve function section 210 is provided with a ball spring type valve mechanism.
- the valve mechanism provided in the valve function unit 210 is not particularly limited as long as the pressure in the container 100 that has risen due to the gas can be reduced.
- valve seat 212 may be, for example, an O-ring, or a portion of the seal attachment portion 220 that contacts the ball 214 may be the valve seat 212.
- the seal mounting part 220 and the valve seat 212 are integrated.
- the valve seat is made of an elastic material such as fluorine rubber, a metal such as stainless steel, a resin, or the like.
- the surface of the valve seat may be coated with PTFE or the like.
- the ball 214 may be made of an elastic material such as fluoro rubber.
- the ball 214 may be made of metal such as stainless steel or resin.
- the spring 216 is made of, for example, stainless steel.
- Membrane 218, for example, 10 -2 to have 10 0 [mu] m approximately pore diameter (pore For diameter), without leaking the electrolyte is composed of a PTFE membrane as the only gas permeable (permselective).
- PTFE means polytetrafluoroethylene (polytetrafluoroethylene).
- FIG. 7 and the like show a diagram in which the membrane 218 is provided in the valve function unit 210.
- the membrane 218 is used. 218 is preferably provided in the seal attachment part 220 (for example, the ventilation path A1).
- the valve function may be impaired by a crystal component of the electrolytic solution or the like.
- the shape of the ball may be, for example, spherical, but it is not always necessary to be spherical, since the portion where the ball and the valve seat come into contact may be a corresponding shape, and may be, for example, hemispherical. However, the shape may be oblong or oblate. Further, for example, when the ball is hemispherical, a columnar member may extend from a flat surface.
- the gas guided from the ventilation path A1 presses the ball 214 in the direction of arrow F.
- the ball 214 is pressed and the spring 216 contracts, the gas in the container 100 passes through a gap formed between the ball 214 and the valve seat 212, passes through the membrane 218, and passes through the exhaust port O 1 through the container 100. Is discharged to the outside.
- the membrane 218 is provided in a region below the valve seat 212 (for example, the seal mounting portion 220).
- FIG. 8 is a sectional view taken along the line VIII-VIII of FIG. 1, and is a view for explaining an attached state of the valve device 200.
- the valve function unit 210 of the valve device 200 is located outside the edge of the peripheral joint 130.
- a part of the seal mounting portion 220 of the valve device 200 is sandwiched between the heat-fusible resin layer 35 of the packaging material 110 and the heat-fusible resin layer 35 of the packaging material 120 at the peripheral joining portion 130. In this state, the outer peripheral surface of the seal mounting portion 220 and the heat-fusible resin layer 35 as the innermost layer of the packaging materials 110 and 120 are fused and joined.
- FIG. 8 is a sectional view taken along the line VIII-VIII of FIG. 1, and is a view for explaining an attached state of the valve device 200.
- the valve function unit 210 of the valve device 200 is located outside the edge of the peripheral joint 130.
- a part of the seal mounting portion 220 of the valve device 200 is sandwiched between the heat-fusible resin
- valve device 200 is described as being in a state of being fused and joined to the heat-fusible resin layer 35 which is the innermost layer of the packaging materials 110 and 120.
- the adhesive resin layer 35 is partially illustrated only in the vicinity of the peripheral joining portion 130, the heat-fusible resin layer 35 is provided on the entire surfaces of the packaging materials 110 and 120.
- seal attachment portion 220 is sandwiched between heat-fusible resin layers 35 at peripheral joining portion 130, and valve function portion 210 is heat-fusible resin at peripheral joining portion 130.
- the reason for not being sandwiched by the layer 35 will be described below.
- valve function part 210 is sandwiched between the heat-fusible resin layers 35 at the peripheral joint part 130.
- the valve mechanism in the valve function unit 210 fails due to the applied heat and pressure. there's a possibility that.
- the seal attachment portion 220 is sandwiched between the heat-fusible resin layers 35 at the peripheral joining portion 130, and the valve function portion 210 is formed of the heat-fusible resin. It is not sandwiched between layers 35. Therefore, in the package 10 with a valve device, large pressure and heat are not applied to the valve function part 210 at the time of heat sealing. That is, in the package 10 with the valve device, the failure of the valve mechanism due to the pressure and heat applied at the time of heat sealing is suppressed by not sandwiching the valve function part 210 between the heat-fusible resin layers 35.
- the cross-sectional diameter of the seal attachment portion 220 is shorter than the cross-sectional diameter of the valve function portion 210. Therefore, as compared with the case where the cross-sectional diameter of the seal mounting portion 220 is equal to or greater than the cross-sectional diameter of the valve function portion 210, the package with the valve device in the portion of the peripheral joining portion 130 where the seal mounting portion 220 is sandwiched.
- the difference between the length L4 in the thickness direction of the package and the length L3 in the thickness direction of the package with the valve device in the portion of the peripheral joining portion 130 where the seal mounting portion 220 is not sandwiched is small.
- the difference between length L4 and length L3 is small. Therefore, when the periphery of the container 100 is sandwiched by the heat sealing machine, pressure and heat are appropriately applied to the heat-fusible resin layer 35 over the entire periphery of the container 100. As a result, according to the package 10 with a valve device, the opposing heat-fusible resin layer 35 is appropriately fused while reducing the possibility of dielectric breakdown in the package 10 with a valve device, and 220 can be firmly fixed to the container 100.
- the end of the seal mounting portion 220 in the direction of arrow B projects into the space S1 beyond the flange 114. Therefore, there is a possibility that the end of the seal mounting portion 220 in the direction of the arrow B may come into contact with the contents 400 depending on the use state of the package 10 with the valve device.
- R is formed at the end of seal mounting portion 220 in the direction of arrow B as described above (FIG. 5). Therefore, even if the end of the seal attachment portion 220 comes into contact with the content 400, the possibility that the end damages the content 400 is low.
- the end of the seal mounting portion 220 in the direction of arrow B may come into contact with the heat-fusible resin layer 35 of the packaging material 120.
- R is formed at the end of seal mounting portion 220 in the direction of arrow B, so that the end of seal mounting portion 220 is temporarily wrapped. Even if the material 120 comes into contact with the heat-fusible resin layer 35, it is unlikely that the end portion damages the heat-fusible resin layer 35.
- FIG. 9 is a flowchart illustrating a manufacturing procedure of the package 10 with the valve device.
- the package 10 with a valve device is manufactured by a manufacturing device.
- the manufacturing apparatus places each component in container 100 (step S100).
- the manufacturing apparatus mounts the contents (power storage device elements) 400 (power storage device elements) to which the tabs 300 with the tab films 310 are electrically connected by welding in the space S1 in the packaging material 110 to perform packaging.
- the tab 300 with the tab film 310 is placed on the flange 114 of the material 110, and then the valve device 200 is placed on the flange 114 of the packaging material 110.
- the contents 400 (power storage device elements) are placed in the space S1 in the packaging material 110, and then the tab 300 with the tab film 310 is welded to the contents 400 (power storage device elements) to be electrically connected.
- the tab 300 with the tab film 310 may be placed on the flange 114 of the packaging material 110, and then the valve device 200 may be placed on the flange 114 of the packaging material 110. is there. Then, the manufacturing device places the packaging material 120 on the packaging material 110.
- FIG. 10 is a view showing an operation of placing the valve device 200 between the flange portion 114 of the packaging material 110 and the packaging material 120.
- a step is formed between the valve function part 210 and the seal attachment part 220. Therefore, when the seal mounting portion 220 is sandwiched between the packaging materials 110 and 120, even if the valve device 200 is pushed too far into the container 100, the step portion is caught by the ends of the packaging materials 110 and 120. Therefore, according to the package 10 with a valve device, the situation where the valve function part 210 is erroneously sandwiched between the packaging materials 110 and 120 (the heat-fusible resin layer 35) in the manufacturing process of the package 10 with the valve device is suppressed. can do.
- the tip of the seal mounting portion 220 of the valve device 200 may be arranged at a position sandwiched between the packaging materials 110 and 120.
- Step S110 the manufacturing apparatus heat seals the periphery of the container 100 (Step S110). That is, the manufacturing apparatus applies pressure and heat to the periphery of the container 100 with the periphery of the container 100 interposed therebetween. As a result, the heat-fusible resin layers 35 facing each other are fused to each other at the peripheral edge of the container 100, and the peripheral joint portion 130 is formed. Then, the contents 400 are sealed in the container 100, the valve device 200 is fused and fixed to the peripheral joint 130, and the tab 300 is also fused to the peripheral joint 130 via the tab film 310. It is fixed and the package 10 with the valve device is completed.
- the shape of the surface of the seal bar of the manufacturing apparatus that sandwiches the periphery of the container 100 conforms to the outer shape of the seal mounting portion 220.
- the adhesion between the heat-fusible resin layers 35 at the position where the seal attachment portion 220 is sandwiched becomes stronger.
- valve device 200 in package 10 with a valve device according to the first embodiment, at least a part of seal mounting portion 220 of valve device 200 is sandwiched between heat-fusible resin layers 35 at peripheral joining portion 130.
- the valve function part 210 of the valve device 200 is not sandwiched between the heat-fusible resin layers 35 at the peripheral joint part 130. Therefore, in the package 10 with a valve device, a large pressure and heat are not applied to the valve function part 210 as compared with the seal attachment part 220 when the opposing heat-fusible resin layer 35 is fused. As a result, according to the package 10 with a valve device, it is possible to suppress the failure of the valve mechanism in the valve function unit 210 due to the pressure and heat applied when the opposing heat-fusible resin layer 35 is fused. .
- the content 400 is an example of the “packaging element with a valve device” of the present disclosure
- the container 100 is an example of the “container” of the present disclosure
- the valve device 200 is a “valve element” of the present disclosure.
- Device The base layer 31 is an example of a “base layer” of the present disclosure
- the barrier layer 33 is an example of a “barrier layer” of the present disclosure
- the heat-fusible resin layer 35 is This is an example of the “fusible resin layer”.
- the peripheral joint 130 is an example of the “peripheral joint” of the present disclosure.
- the valve function part 210 is an example of the “first part” of the present disclosure
- the seal attaching part 220 is an example of the “second part” of the present disclosure.
- the air passage A1 is an example of the “air passage” of the present disclosure.
- the contents 400 are illustrated in a small size with respect to the space S1 of the container 100 for convenience.
- the space S1 is slightly larger than the content 400, but is degassed as described above in the manufacturing process.
- the space S1 is slightly reduced with deaeration and becomes substantially the same size as the contents 400, and the contents 400 are stored in the space S1 with almost no gap.
- Embodiment 2 The second embodiment differs from the first embodiment in the configuration of the valve device. Other configurations are basically the same as those of the first embodiment. Here, portions different from the first embodiment will be described.
- FIG. 11 is a plan view of valve device 200A mounted on the package with a valve device according to the second embodiment.
- the valve device 200A includes a valve function part 210A and a seal mounting part 220A.
- At least a part of the seal attachment portion 220A is a portion that is heat-sealed by being sandwiched between the packaging materials 110 and 120.
- the seal mounting portion 220A has a different cross-sectional shape as compared with the first embodiment.
- the valve function part 210A is basically the same as that of the first embodiment, but according to the difference in the shape of the ventilation path A6 (FIG. 12) formed in the seal attachment part 220A, the housing and the valve mechanism. The shape of has been partially changed.
- FIG. 12 is a cross-sectional view taken along the line XII-XII of FIG.
- the length L5 in the width direction (the direction of the arrow LR) of the package with the valve device is the length in the thickness direction (the direction of the arrow UD) of the package with the valve device. It is longer than L6.
- the cross-sectional shape of the seal mounting portion 220A is an elliptical shape.
- a ventilation passage A6 is formed inside the seal mounting portion 220A. Also in the ventilation path A6, the length in the width direction of the package with the valve device is longer than the length in the thickness direction of the package with the valve device. More specifically, the cross-sectional shape of the ventilation path A6 is an elliptical shape.
- the length L5 in the width direction of the package with the valve device is longer than the length L6 in the thickness direction of the package with the valve device. That is, the length of the seal mounting portion 220A in the thickness direction of the package with the valve device is shorter than the case where the cross-sectional shape of the seal mounting portion is a perfect circle (the same area).
- the length in the thickness direction of the package with the valve device in the portion where the seal mounting portion 220A is sandwiched in the peripheral joining portion 130, and the seal mounting portion 220A in the peripheral joining portion 130 is sandwiched.
- the difference from the length in the thickness direction of the package body with the valve device in the portion not provided is smaller. Therefore, according to this package with a valve device, pressure and heat can be appropriately applied to the heat-fusible resin layer 35 over the entire periphery of the container 100, and the opposing heat-fusible resin layer 35 can be appropriately applied. Since fusion can be performed, the seal mounting portion 220A of the valve device 200A can be firmly fixed to the container 100.
- the valve device 200A is an example of the “valve device” of the present disclosure
- the valve function unit 210A is an example of the “first portion” of the present disclosure
- the seal mounting unit 220A is the “second device” of the present disclosure.
- Part The air passage A6 is an example of the “air passage” of the present disclosure.
- Embodiment 3 differs from Embodiment 1 in the configuration of the valve device. Other configurations are basically the same as those of the first embodiment. Here, portions different from the first embodiment will be described.
- FIG. 13 is a plan view of valve device 200B mounted on the package with a valve device according to the third embodiment.
- the valve device 200B includes a valve function unit 210B and a seal mounting unit 220B. At least a part of the seal mounting portion 220B is a portion that is heat-sealed by being sandwiched between the packaging materials 110 and 120.
- the cross-sectional shape of the seal mounting portion 220B is different from that of the first embodiment.
- the valve function part 210B is basically the same as that of the first embodiment, but according to the difference in the shape of the ventilation path A7 (FIG. 14) formed in the seal attachment part 220B, the housing and the valve mechanism. The shape of has been partially changed.
- FIG. 14 is a cross-sectional view taken along the line XIV-XIV of FIG.
- wing-shaped extending ends 40 and 41 are formed at both ends in the width direction (the direction of the arrow LR) of the package with the valve device.
- Each of the wing-shaped extending ends 40 and 41 has a shape that becomes thinner as approaching the widthwise end of the package with the valve device.
- each of the wing-shaped extending ends 40 and 41 has a thickness direction of the package with the valve device in the direction of the arrow LR as compared with the other part (circular part) of the seal attachment part 220B. It can be said that the length changes gradually.
- the seal of the peripheral joint portion 130 is different.
- the change in the thickness direction of the package with the valve device at the position where the portion where the attachment portion 220B is not sandwiched and the portion where the seal attachment portion 220B is sandwiched among the peripheral joining portions 130 is smooth.
- the seal mounting portion 220B of the valve device 200B can be firmly fixed to the container 100.
- the valve device 200B is an example of the “valve device” of the present disclosure
- the valve function unit 210B is an example of the “first part” of the present disclosure
- the seal mounting unit 220B is the “second device” of the present disclosure.
- Part The wing-shaped extended ends 40 and 41 are examples of the “wing-shaped extended end” of the present disclosure.
- the air passage A7 is an example of the “air passage” of the present disclosure.
- Embodiment 4 differs from the first embodiment in the configuration of the valve device. Other configurations are basically the same as those of the first embodiment. Here, portions different from the first embodiment will be described.
- FIG. 15 is a plan view of valve device 200C mounted on the package with a valve device according to the fourth embodiment.
- the valve device 200C includes a valve function unit 210C and a seal mounting unit 220C. At least a part of the seal mounting portion 220C is a portion that is heat-sealed by being sandwiched between the packaging materials 110 and 120.
- the seal mounting portion 220C has a different cross-sectional shape as compared with the first embodiment.
- the valve function part 210C is basically the same as that of the first embodiment, but according to the difference in the shape of the ventilation path A2 (FIG. 16) formed in the seal attachment part 220C, the housing and the valve mechanism. The shape of has been partially changed.
- FIG. 16 is a sectional view taken along the line XVI-XVI in FIG.
- pillars 50 and 51 are formed in the seal attachment portion 220C (in the ventilation path A2).
- Each of the pillars 50 and 51 extends in the thickness direction (the direction of the arrow UD) of the package with the valve device, and both ends in the thickness direction of the package with the valve device are connected to the inner periphery of the seal mounting portion 220C.
- Each of the pillars 50 and 51 extends in the direction of arrow FB in the ventilation path A2 (FIG. 15).
- the number of pillars does not necessarily need to be two, and at least one pillar is sufficient.
- the valve device 200C is an example of the “valve device” of the present disclosure
- the valve function unit 210C is an example of the “first part” of the present disclosure
- the seal mounting unit 220C is the “second portion” of the present disclosure.
- Part The pillars 50 and 51 are examples of the “pillar” of the present disclosure.
- the air passage A2 is an example of the “air passage” of the present disclosure.
- the fifth embodiment is different from the first embodiment in the configuration of the valve device. Other configurations are basically the same as those of the first embodiment. Here, portions different from the first embodiment will be described.
- FIG. 17 is a plan view of valve device 200D mounted on the package with a valve device according to the fifth embodiment.
- the valve device 200D includes a valve function part 210 and a seal mounting part 220D.
- the configuration of the valve function unit 210 is the same as in the first embodiment.
- At least a part of the seal mounting portion 220D is a portion that is heat-sealed by being sandwiched between the packaging materials 110 and 120.
- the outer surface of seal mounting portion 220D is different from that of the first embodiment.
- the outer surface of the seal mounting portion 220D is a pear.
- the surface roughness Ra of the pear is, for example, 1 ⁇ m to 20 ⁇ m.
- the seal mounting portion 220D of the valve device 200D is firmly fixed to the container 100 as compared with the first embodiment (when the outer surface of the seal mounting portion 220D is smooth). can do.
- valve device 200D is an example of the “valve device” of the present disclosure
- seal mounting portion 220D is an example of the “second portion” of the present disclosure.
- Embodiment 6 differs from the first embodiment in the configuration of the valve device. Other configurations are basically the same as those of the first embodiment. Here, portions different from the first embodiment will be described.
- FIG. 18 is a plan view of valve device 200E mounted on the package with a valve device according to the sixth embodiment.
- the valve device 200E includes a valve function unit 210 and a seal mounting unit 220E.
- the configuration of the valve function unit 210 is the same as in the first embodiment.
- the seal mounting portion 220E is a portion where at least a part thereof is heat-sealed by being sandwiched between the packaging materials 110 and 120.
- the outer surface of the seal attachment portion 220E is different from that of the first embodiment.
- a protruding ridge portion 60 extending continuously in the circumferential direction is formed on the outer surface of the seal mounting portion 220E.
- the three protruding ridges 60 are formed in the arrow FB direction in the seal mounting portion 220E.
- the number of the ridges 60 is not necessarily three, and at least one ridge 60 may be formed.
- FIG. 19 is a sectional view taken along the line XIX-XIX in FIG. As shown in FIG. 19, the cross section of the ridge 60 is semicircular.
- the semicircular R is, for example, 0.05 mm to 1.0 mm.
- the diameter L12 (the length in the thickness direction of the package with the valve device and the length in the width direction of the package with the valve device) in the portion where the convex portion 60 is formed in the seal attachment portion 220E is the convex portion. It is longer than the diameter L11 in the part where 60 is not formed.
- the protruding ridges 60 surely come into contact with the heat-fusible resin layer 35, so that they are easily fused to the packaging materials 110 and 120.
- ridge 60 extends continuously around the outer surface of seal mounting portion 220E in the circumferential direction. Therefore, according to this package with a valve device, the heat-fusible resin layer 35 and the seal attachment portion 220E can be fused together in one circumferential direction of the seal attachment portion 220E.
- the outer surface of the seal mounting portion 220E and the heat-fusible resin are compared with the first embodiment (when the convex ridge portion 60 is not formed in the seal mounting portion 220E). Since the contact area with the seal member 220 is large, the seal mounting portion 220E of the valve device 200E can be firmly fixed to the packaging material 110.
- valve device 200E is an example of the “valve device” of the present disclosure
- seal mounting portion 220E is an example of the “second portion” of the present disclosure
- ridge 60 is an example of the “ridge” of the present disclosure
- air passage A3 is an example of the “air passage” of the present disclosure.
- the ridge 60 extends continuously in the circumferential direction.
- the ridge 60 may be formed on the entire circumference as long as it extends in the circumferential direction. It does not have to be continuous.
- the wing-shaped extending ends 40 and 41 are provided as in the above-described third embodiment, it is not necessary to provide the ridge 60 for making a full circle including the wing-shaped extending ends 40 and 41, and the wing-shaped extending end is not required.
- Embodiment 7 The seventh embodiment is different from the first embodiment in the configuration of the valve device. Other configurations are basically the same as those of the first embodiment. Here, portions different from the first embodiment will be described.
- FIG. 20 is a plan view of valve device 200F mounted on the package with a valve device according to the seventh embodiment.
- the valve device 200F includes a valve function unit 210F and a seal mounting unit 220F. At least a part of the seal mounting portion 220F is a portion that is heat-sealed by being sandwiched between the packaging materials 110 and 120.
- the valve function part 210F and the seal attachment part 220F have different cross-sectional shapes as compared with the first embodiment.
- FIG. 21 is a cross-sectional view taken along the line XXI-XXI of FIG.
- the cross section of the valve function unit 210F has a semicircular shape. That is, the surface of the valve function unit 210F in the direction of the arrow U is flat.
- the cross section of the seal mounting portion 220F has wing-like extending ends 40F and 41F at both ends in the direction of the arrow LR.
- the surface of the seal mounting portion 220F in the direction of arrow U is flat.
- the surface of the valve function portion 210F in the direction of the arrow U and the surface of the seal mounting portion 220F in the direction of the arrow U are flush with each other.
- valve device 200F when the valve device 200F is arranged with the surface in the direction of the arrow U facing down, the valve device 200F does not roll. Therefore, according to the package with a valve device according to the seventh embodiment, when mounting valve device 200F to container 100, valve device 200F does not roll, so that valve device 200F can be easily positioned.
- FIG. 22 is a diagram showing a state when the valve device 200F is attached to the container 100.
- the plane of the valve device 200F is placed on the surface of the innermost layer of the packaging material 120. In this state, the valve device 200F does not roll. Therefore, according to the package with a valve device according to the seventh embodiment, when mounting valve device 200F to container 100, positioning of valve device 200F can be easily performed. Further, in the state of the package with the valve device, the bulge of the peripheral joint portion 130 by the valve device 200F can be directed to the direction in which the container 100 bulges, that is, the upward direction from which the molded portion 112 projects in FIG.
- the valve device 200F is an example of the “valve device” of the present disclosure
- the valve function unit 210F is an example of the “first part” of the present disclosure
- the seal mounting unit 220F is the “second device” of the present disclosure.
- Part The air passage A4 is an example of the “air passage” of the present disclosure.
- the cross section of the seal attaching portion (the seal attaching portion 220 and the like) has a shape based on a circle.
- the cross-sectional shape of the seal mounting portion is not limited to this.
- the cross-sectional shape of the seal mounting portion may have a shape based on a polygon.
- FIG. 23 is a diagram showing a cross section of a valve device 200G according to the first modification.
- the cross section of the seal mounting portion 220G has a rhombic shape.
- the length L7 in the width direction of the package with the valve device is longer than the length L8 in the thickness direction of the package with the valve device.
- the length in the thickness direction of the package with the valve device in the portion where the seal attachment portion 220G is sandwiched in the peripheral joining portion 130 and the seal attachment portion 220G in the peripheral joint portion 130 are sandwiched. The difference from the length in the thickness direction of the package body with the valve device in the portion not provided is smaller.
- FIG. 24 is a view showing a cross section of the valve device 200H according to the second modification.
- the cross section of the seal attachment portion 220H has a rhombic shape or a hexagonal shape chamfered at both ends in the thickness direction of the package with the valve device.
- the length L9 in the width direction of the package with the valve device is longer than the length L10 in the thickness direction of the package with the valve device.
- the length in the thickness direction of the package with the valve device in the portion where the seal attachment portion 220H is sandwiched in the peripheral joint portion 130, and the seal attachment portion 220H in the peripheral joint portion 130 is sandwiched.
- the difference from the length in the thickness direction of the package body with the valve device in the portion not provided is smaller. Therefore, according to this package with a valve device, pressure and heat can be appropriately applied to the heat-fusible resin layer 35 over the entire periphery of the container 100, and the opposing heat-fusible resin layer 35 can be appropriately applied. Since the fusion can be performed, the seal mounting portion 220H of the valve device 200H can be firmly fixed to the container 100.
- FIG. 25 is a view showing a cross section of the valve device 200I according to the third modification.
- the cross section of the seal attachment portion 220I has a shape in which wing-shaped extending ends 40I and 41I are provided at both ends of the rhombus (in the width direction of the package with the valve device).
- the seal mounting portion 220I of the peripheral joining portion 130 is different from the first embodiment (in the case where the wing-shaped extending ends 40I and 41I are not provided in the seal mounting portion 220I), for example.
- the change in the thickness direction of the packaging body with the valve device at the position where the portion that is not sandwiched transitions to the portion of the peripheral joining portion 130 where the seal attachment portion 220I is sandwiched is smooth. Therefore, according to this package with a valve device, the position where the seal attachment portion 220I is sandwiched by the heat-fusible resin layer 35 and the position where the seal attachment portion 220I is not sandwiched by the heat-fusible resin layer 35 Since no excessive force is applied to the packaging materials 110 and 120 at the boundary of, the seal mounting portion 220I of the valve device 200I can be firmly fixed to the container 100.
- FIG. 26 is a plan view of a valve device 200J according to the fourth modification.
- the valve device 200J includes a valve function part 210J and a seal mounting part 220J.
- An air passage A5 is formed in the seal attachment portion 220J.
- FIG. 27 is a sectional view taken along the line XXVII-XXVII of FIG. This cross section can also be said to be a plane having the center line C1 of the ventilation path A5 as a normal line.
- the portion of the portion 220J sandwiched between the heat-fusible resin layers 35 can damage the heat-fusible resin layers 35 and reduce the possibility of lowering the insulating properties of the heat-fusible resin layers 35.
- the flange 114 of the packaging material 110 is in a flat state.
- the shape of the flange 114 is not limited to this.
- a valve device arranging portion for arranging the seal mounting portion 220 of the valve device 200 may be formed in the flange portion 114 in advance.
- FIG. 28 is a plan view of a packaging material 110K in Modification Example 5. As shown in FIG. 28, a valve device arrangement portion 116K is formed in the flange portion 114K.
- FIG. 29 is a sectional view taken along the line XXIX-XXIX of FIG.
- the valve device arrangement portion 116K formed on the flange portion 114K has a semicircular shape.
- the diameter of this semicircle is, for example, slightly longer than the diameter of the seal mounting part 220.
- valve device arrangement part 116K does not necessarily need to be provided in the packaging material 110K, and may be provided in the packaging material 120. Even in this case, the same effect as when the valve device arrangement portion 116K is provided on the packaging material 110K can be obtained.
- the mounting state of the seal mounting portion is not limited to this.
- the entirety of the seal attaching portion may be sandwiched between the heat-fusible resin layers 35 at the peripheral joining portion 130.
- R is formed at the corner in plan view of the end of the seal mounting portion (for example, the seal mounting portion 220) opposite to the valve function portion (for example, the valve function portion 210). Therefore, it is unlikely that the ends damage the heat-fusible resin layer 35 and lower the insulating properties of the heat-fusible resin layer 35.
- a step is formed at the boundary between the valve function portion (for example, valve function portion 210) and the seal mounting portion (for example, seal mounting portion 220).
- a step is not necessarily formed at the boundary between the valve function part and the seal attachment part.
- the cross-sectional diameter of the valve function part and the cross-sectional diameter of the seal mounting part may be the same, and the valve function part and the seal mounting part may be connected flat.
- the cross section of the air passage (for example, the air passage A1) formed in the seal attachment portion (the seal attachment portion 220 and the like) has a shape based on a circle.
- the cross-sectional shape of the ventilation path is not limited to this.
- the cross-sectional shape of the ventilation path may be a shape based on a polygon.
- R is formed at the corner of the end of the seal attachment portion (eg, the seal attachment portion 220) opposite to the valve function portion (eg, the valve function portion 210).
- the corner does not necessarily have to be formed with R.
- the valve device (for example, the valve device 200) is a so-called check valve.
- the valve device does not necessarily have to be a check valve.
- the valve device may be, for example, a so-called break valve or a selective permeation valve.
- tabs 300 are provided at both ends in the direction of arrow LR of container 100, and the valve device (for example, valve device 200) is provided with the arrow of container 100. It was provided at the end in the F direction.
- the positional relationship between the valve device 200 and the tab 300 is not limited to this.
- both tabs 300 may be disposed on the same side of the periphery of the container 100, the valve device may be disposed between the two tabs 300, or both tabs 300 may be the same on the periphery of the container 100.
- the valve device may be disposed on any one of the three sides other than the side on which the tab 300 is disposed on the side.
- the container 100 includes the packaging material 110 formed by embossing or the like and the packaging material 120 separate from the packaging material 110.
- the container 100 does not necessarily have to have such a configuration.
- the packaging material 110 and the packaging material 120 may be integrated (connected) in one side in advance.
- the packaging material 110 and the packaging material 120 are integrated (connected), and the packaging material 110 and the packaging material 120 are stacked.
- the contents 400 may be sealed in the container 100 by performing four-side sealing.
- the flange portion 114 is omitted on the side where the packaging material 110 and the packaging material 120 are integrated, and the packaging material 110 and the packaging material 120 are sealed in a three-way manner in a stacked state, so that the container 100
- the contents 400 may be sealed therein.
- the packaging material 120 may be formed in the same shape as the packaging material 110.
- the container 100 may be, for example, a pouch-type container.
- the pouch type container may be any type such as a three-side seal type, a four-side seal type, a pillow type, and a gusset type.
- the casing of the valve function section (for example, the valve function section 210) and the casing of the seal attaching section (for example, the seal attaching section 220) are formed of the same material (resin).
- the casing of the valve function section and the casing of the seal mounting section need not necessarily be formed of the same material.
- the housing of the valve function part and the housing of the seal attachment part may be made of different materials, and the melting point of the material of the valve function part may be higher than the melting point of the material of the seal attachment part.
- the seal attachment portion is made of polypropylene (PP), and the valve function portion is made of a resin having a melting point higher than PP (for example, a fluorine resin, a polyester resin, a polyimide resin, a polycarbonate resin, an acrylic resin) or a metal. May be done.
- PP polypropylene
- the resin used for the seal attachment portion polypropylene (PP) that is easily integrated with the inner layer of the packaging material is preferable.
- the casing of the valve device 200 is made of resin, and the seal attachment portion 220 is directly sandwiched between the heat-fusible resin layers 35.
- the housing of the valve device 200 does not necessarily need to be made of resin, and may be made of, for example, metal (for example, aluminum or stainless steel).
- an adhesive protection film may be disposed between the seal attachment portion 220 and the heat-fusible resin layer 35.
- the adhesive protective film is configured so that one surface is bonded to at least resin, and the other surface is configured to be bonded to at least metal.
- various known adhesive protective films can be employed. For example, the same adhesive protective film as the tab film 310 can be used.
- the outer peripheral side of the seal mounting portion (for example, the seal mounting portion 220) (the corner of the end of the seal mounting portion opposite to the valve function portion (for example, the valve function portion 210)).
- the inner peripheral side of the seal mounting portion (the edge of the ventilation path (for example, the ventilation path A1)).
- R may be formed on the inner peripheral side of the seal attachment portion.
- a flat surface is formed on both outer surfaces of valve function section 210F and seal mounting section 220F.
- the package 10 with the valve device according to the first to seventh embodiments is a secondary battery as an electricity storage device, it is defined by the concept of outputting electricity. It also includes a package with a valve device such as a double-layer capacitor (EDLC) and a lithium-ion capacitor. Further, the type of the secondary battery is not particularly limited. For example, a lithium-ion battery, a lithium-ion polymer battery, a lead A storage battery, a nickel-hydrogen battery, a nickel-cadmium battery, a nickel-iron storage battery device, a nickel-zinc storage battery, a silver oxide-zinc storage battery, a metal air battery, a polyvalent cation battery, an all-solid battery, and the like.
- a lithium-ion battery a lithium-ion polymer battery, a lead A storage battery, a nickel-hydrogen battery, a nickel-cadmium battery, a nickel-iron storage battery device, a nickel-zinc storage battery, a silver oxide-zinc storage battery, a metal
- Example 1 and Comparative Examples 1 and 2 ⁇ Preparation of packaging material> Polyethylene terephthalate film (12 ⁇ m) / adhesive layer (two-component curable urethane adhesive (polyol compound and aromatic isocyanate compound, thickness 3 ⁇ m) / biaxially stretched nylon film (thickness 15 ⁇ m) laminated in this order) The prepared laminated film was prepared. Next, an aluminum foil (JIS H4160: 1994 A8021HO, thickness of 40 ⁇ m, average crystal grain size having an acid resistant film formed on both sides on a biaxially stretched nylon film (thickness: 15 ⁇ m) of the base material layer. 2 ⁇ m) was laminated by a dry lamination method.
- JIS H4160 1994 A8021HO
- a two-part curable urethane adhesive (with a polyol compound) is formed on one side of an aluminum foil on which an acid-resistant film (a film formed by chromate treatment and having a chromium content of 30 mg / m 2 ) is formed on both surfaces.
- An aromatic isocyanate compound was applied, and an adhesive layer (thickness after curing was 3 ⁇ m) was formed on the aluminum foil.
- an aging treatment was performed to produce a laminate of the base material layer / adhesive layer / barrier layer.
- the obtained laminate is aged and heated, so that a polyethylene terephthalate film (12 ⁇ m) / adhesive layer (3 ⁇ m) / biaxially stretched nylon film (15 ⁇ m) // adhesive layer (3 ⁇ m) / barrier layer (40 ⁇ m) / adhesive layer (40 ⁇ m) / heat-fusible resin layer (40 ⁇ m) were laminated in this order to obtain a packaging material.
- the obtained packaging material was cut into strips having a length (MD) of 120 mm and a width (TD) of 110 mm.
- the MD of the packaging material corresponds to the rolling direction (RD) of the aluminum alloy foil
- the TD of the packaging material corresponds to the TD of the aluminum alloy foil.
- One strip was subjected to cold forming such that the heat-fusible resin layer side became a concave portion to form a formed portion having a length (MD) of 110 mm, a width (TD) of 100 mm and a depth of 5 mm. Specifically, this strip is placed in a 25 ° C.
- the tab of the positive electrode is an aluminum foil
- the tab of the negative electrode is a CuNi-plated tab, each having a thickness of 0.1 mm, a length of 30 mm, and a width of 30 mm, and subjected to the same chromate treatment as the barrier layer.
- the tab film is a maleic anhydride-modified polypropylene film (100 ⁇ m in thickness).
- the conditions of the heat fusion were a surface pressure of 1.0 MPa, a temperature of 190 ° C., a sealing time of 30 seconds, and a sealing width of 4 mm.
- the valve device had a surface pressure of 0.5 MPa, a temperature of 200 ° C., a sealing time of 5 seconds, and a sealing width of 4 mm.
- a notch (200 ⁇ m) is provided at a position where the tab 300 is located as a seal bar used for heat fusion of a peripheral edge where the tab 300 is located, so that a heat-fusible resin located on the tab 300 is located.
- the layer is suppressed from being significantly crushed.
- the shape of the location where the seal mounting portion 220 of the valve device 200 is located is processed so as to conform to the shape of the seal mounting portion 220. As a result, the heat-fusible resin layer located on the seal attachment portion 220 is suppressed from being significantly crushed.
- the valve device 200 has the size and appearance as shown in FIG. 30, the valve mechanism is a ball spring type, and the operating pressure is adjusted by a spring (spring).
- the seal mounting part 220 (length 5.0 mm, outer diameter ⁇ 2.5 mm of the curved surface part 220 a, inner diameter ⁇ 1.2 mm of the vent) is a polypropylene resin, and the valve function part 210 (length 13.0 mm, outer diameter ⁇ 6.0 mm) was made of stainless steel (SUS304).
- the differential pressure (opening pressure) between the primary side and the secondary side at which the valve device is opened is the differential pressure (opening pressure) between the primary side and the secondary side at which the valve device of the container is opened in these package samples with the valve device. (Opening pressure, 25 ° C. environment) Example 1 was set to 0.1 MPa, Comparative Example 1 was set to 0.65 MPa, and Comparative Example 2 was set to 0.8 MPa.
- the internal pressure is increased by injecting air from a valve device serving as a ventilation path, and the appearance of the container after gas is released from the valve device and the container measured by the following method Was confirmed as the maximum strain X.
- Table 1 shows the results.
- the use or non-use of the stainless steel plate can be appropriately selected according to the assumed use environment. For example, when the package is installed in the space of the housing of the product, for example, the interval between the stainless steel plates may be set to 5 mm or more, or it may be installed in an actual housing and tested. When it is assumed that the device is used in a space where there are no obstacles in the vicinity, it is not necessary to use a stainless steel plate.
- the maximum strain X of the container was measured as follows. First, two identical packages to be measured for the maximum strain X were prepared. Next, lines were drawn in a grid pattern at 1 mm intervals on the outer surface of the package (that is, the outer surface of the container). At this time, the positions of the lines drawn on the outer surfaces of the two packages were the same. Next, for one package, the valve function was removed from the valve device to form a ventilation path, and the test sample was placed in a frame in which stainless plates (thickness 10 mm) simulating the use environment were fixed at intervals of 5 mm.
- the use or non-use of the stainless steel plate can be appropriately selected according to the assumed use environment.
- the interval between the stainless steel plates may be set to 5 mm or more, or it may be installed in an actual housing and tested.
- the maximum strain X of the container after the pressure inside the container increases and the gas inside the container is released to the outside from the valve device is set to less than 30%.
- the internal pressure is increased by the gas generated inside the package with the valve device, a large wrinkle is formed in the container (ie, the exterior material) after the gas is released, or the shape is reduced. It can be seen that the gas is released from the valve device to the outside at an appropriate timing before the shape of the large deformation largely changes.
- a base body, a barrier layer and a heat-fusible resin layer are constituted by a laminate having in this order, the contents are stored inside, a container, A valve device communicating with the inside of the container, The valve device is configured to reduce the pressure when the pressure inside the container increases due to gas generated inside the container, A package with a valve device, wherein the maximum strain in the thickness direction of the container after the pressure inside the container increases and the gas inside the container is released from the valve device to the outside is less than 30%. body.
- the valve device according to Item 1 wherein the differential pressure between the primary side and the secondary side of the valve device is set so that the valve device is opened within a range of 0.015 MPa or more and 0.6 MPa or less.
- Package with valve device. Item 3.
- Item 3. The package with a valve device according to Item 1 or 2, wherein the valve device is a check valve.
- the valve device includes: A valve mechanism for reducing the pressure when the pressure inside the container increases due to gas generated inside the container, An air passage for guiding gas generated inside the container to the valve mechanism, Item 4.
- Item 5. Item 5.
- the package with a valve device according to any one of Items 1 to 4, wherein the membrane is a polytetrafluoroethylene membrane. Item 6.
- the heat-fusible resin layer faces, On the peripheral edge of the container, a peripheral joint portion where the opposed heat-fusible resin layers are fused to each other is formed, At least a portion of the valve device is sandwiched between the heat-fusible resin layers facing each other at the peripheral joint portion, so that the valve device is attached to the container,
- the valve device includes: A first portion formed therein with a valve mechanism that reduces the pressure when the pressure inside the container increases due to gas generated inside the container; A second portion having an air passage formed therein for guiding a gas generated inside the container to the valve mechanism, The first portion is located outside an edge of the peripheral joint, Item 6.
- Item 10. Item 10. The package with a valve device according to any one of Items 6 to 9, wherein a cross-sectional shape of the ventilation path is circular.
- Item 11. The valve device according to any one of Items 6 to 10, wherein a length of a cross section of the ventilation path in a width direction of the package is longer than a length of a cross section of the ventilation path in a thickness direction of the package.
- With packaging Item 12.
- Item 12. The package with a valve device according to any one of Items 6 to 11, wherein the second portion has a pillar formed in the ventilation path.
- Item 13 The package with a valve device according to any one of Items 6 to 12, wherein an outer surface of the second portion is a pear ground. Item 14. Item 13. The package with a valve device according to any one of Items 6 to 12, wherein at least one ridge extending in a circumferential direction is formed on an outer surface of the second portion. Item 15. Item 15. The package with a valve device according to any one of Items 6 to 14, wherein, in the second portion, an end of the end opposite to the first portion has a rounded corner in plan view. Item 16. The outer shape of the cross section of the second portion having the center line of the ventilation path as a normal line is a polygon, Item 16.
- Each of the first and second portions is made of a different material, Item 17.
- a power storage device element At least, a base body, a barrier layer and a heat-fusible resin layer are configured by a laminate having in this order, the power storage device element is housed inside, a housing, A valve device communicating with the inside of the container, The valve device is configured to reduce the pressure when the pressure inside the container increases due to gas generated inside the container, The power storage device, wherein the maximum strain in the thickness direction of the container after the pressure inside the container increases and the gas inside the container is released from the valve device to the outside is less than 30%. Item 20.
- a power storage device element At least, a base body, a barrier layer and a heat-fusible resin layer are configured by a laminate having in this order, the power storage device element is housed inside, a housing, A valve device communicating with the inside of the container, At the periphery of the container, the heat-fusible resin layer faces, On the peripheral edge of the container, a peripheral joint portion where the opposed heat-fusible resin layers are fused to each other is formed, At least a portion of the valve device is sandwiched between the heat-fusible resin layers facing each other at the peripheral joint portion, so that the valve device is attached to the container, The valve device is configured to reduce the pressure when the pressure inside the container increases due to gas generated inside the container, The power storage device, wherein the maximum strain in the thickness direction of the container after the pressure inside the container increases and the gas inside the container is released from the valve device to the outside is less than 30%.
- valve device 10 package with valve device, 31 base layer, 32 adhesive layer, 33 barrier layer, 33a crystal grain, 34 adhesive layer, 35 heat-fusible resin layer, 40, 40I, 41, 41I winged end, 50 , 51 pillar, 60 ridge, 100 container, 110, 110K, 120 packaging material, 112 molding, 114, 114K flange, 116K valve device arrangement, 130 peripheral joint, 200, 200A, 200B, 200C, 200D, 200E, 200F, 200G, 200H, 200I, 200J ⁇ Valve device, 210, 210A, 210B, 210C, 210E, 210F, 210G, 210H, 210I, 210J ⁇ Valve function part, 212 ⁇ Seat, 214 ⁇ Ball, 216 ⁇ Spring, 218 Membrane, 220, 220A, 220B, 220C, 20D, 220E, 220F, 220G, 220H, 220I, 220J ⁇ seal mounting part, 300 ⁇
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Food Science & Technology (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
- Valve Housings (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
This power storage device is composed of a package with a valve device, the package including: a power storage element; a container which is constituted by a laminate having at least a material layer, a barrier layer, and a thermally fusible resin layer in this order and contains the power storage element therein; and the valve device in communication with the inside of the container.
Description
本開示は、弁装置付き包装体及び蓄電デバイスに関する。
The present disclosure relates to a package with a valve device and a power storage device.
従来、様々なタイプの蓄電デバイスが開発されているが、あらゆる蓄電デバイスにおいて、電極や電解質等の蓄電デバイス素子を封止するために包装材料(外装材)が不可欠な部材になっている。従来、蓄電デバイス用外装材として金属製の外装材が多用されていた。
Conventionally, various types of power storage devices have been developed, but in all power storage devices, a packaging material (outer packaging material) is an indispensable member for sealing the power storage device elements such as electrodes and electrolytes. Conventionally, metal exterior materials have been frequently used as exterior materials for power storage devices.
一方、近年、電気自動車、ハイブリッド電気自動車、パソコン、カメラ、携帯電話等の高性能化に伴い、蓄電デバイスには、多様な形状が要求されると共に、薄型化や軽量化が求められている。しかしながら、従来多用されていた金属製の蓄電デバイス用外装材では、形状の多様化に追従することが困難であり、しかも軽量化にも限界があるという欠点がある。
On the other hand, in recent years, as the performance of electric vehicles, hybrid electric vehicles, personal computers, cameras, mobile phones, and the like has increased, various shapes have been required for the power storage devices, and thinner and lighter weights have been required. However, a metal exterior material for a power storage device, which has been frequently used in the past, has a drawback that it is difficult to keep up with diversification of shapes and there is a limit in weight reduction.
そこで、近年、多様な形状に加工が容易で、薄型化や軽量化を実現し得る蓄電デバイス用外装材として、基材/アルミニウム箔層/熱融着性樹脂層が順次積層されたフィルム状の外装材が提案されている。
Therefore, in recent years, as a packaging material for an electricity storage device that can be easily processed into various shapes and can be made thinner and lighter, a film-like material in which a base material / aluminum foil layer / heat-fusible resin layer is sequentially laminated is used. Exterior materials have been proposed.
このようなフィルム状の外装材においては、一般的に、冷間成形により凹部が形成され、当該凹部によって形成された空間に電極や電解液などの蓄電デバイス素子を配し、熱融着性樹脂層同士を熱融着させることにより、外装材の内部に蓄電デバイス素子が収容された蓄電デバイスが得られる。
In such a film-like exterior material, a concave portion is generally formed by cold molding, and an electricity storage device element such as an electrode or an electrolytic solution is arranged in a space formed by the concave portion. By heat-sealing the layers, an electricity storage device in which the electricity storage device element is accommodated inside the exterior material is obtained.
一方、蓄電デバイスなどの容器内部で発生したガスを、容器の破壊圧力よりも低い圧力にて放出するために、弁装置を設ける技術が知られている。例えば特許文献1には、所定の構造を有するキャパシタバルブを用いたことを特徴とする電気二重層キャパシタセルが開示されている。
On the other hand, there is known a technique in which a valve device is provided to release gas generated inside a container such as an electric storage device at a pressure lower than the burst pressure of the container. For example, Patent Document 1 discloses an electric double layer capacitor cell using a capacitor valve having a predetermined structure.
前記のように、弁装置付き包装体として、例えば、蓄電デバイスの内部でガスが発生することに備えて、弁装置を設けた蓄電デバイスが知られている。
As described above, for example, a power storage device provided with a valve device is known as a package with a valve device, for example, in preparation for generating gas inside the power storage device.
しかしながら、フィルム状の外装材を用いた蓄電デバイスは、金属容器を外装材とした蓄電デバイスに比して、外装材の機械的強度が低い。そして、本開示者らが検討したところ、弁装置を取り付けた蓄電デバイスの内部でガスが発生して内圧が上昇し、弁装置からガスが外部に放出されるまでにおいて、フィルム状の外装材を用いた蓄電デバイスには内側から強い力が加わることで外装材に皺が形成され、弁装置からガスが外部に放出された後に外装材に大きな皺が形成される場合や、外装材が大きく変形するといった不具合が生じることを見出した。外装材が大きく変形する場合などには、内容物の位置固定ができなるリスクもある。
However, the electrical storage device using the film-shaped exterior material has a lower mechanical strength than the electrical storage device using the metal container as the exterior material. Then, as a result of examination by the present inventors, gas is generated inside the electricity storage device to which the valve device is attached, the internal pressure is increased, and the film-shaped exterior material is removed until the gas is released from the valve device to the outside. When a strong force is applied from the inside to the power storage device used, wrinkles are formed in the exterior material, and large wrinkles are formed in the exterior material after gas is released to the outside from the valve device, or the exterior material is significantly deformed It has been found that such a problem occurs. When the exterior material is greatly deformed, there is a risk that the position of the contents cannot be fixed.
本開示は、弁装置付き包装体の内部でガスが発生し、内部の圧力が上昇した場合に、ガスの放出後の外装材に大きな皺が形成されたり、形状が大きく変形する不具合が生じる前の適切なタイミングで、弁装置からガスが外部に放出される、弁装置付き包装体を提供することを主な目的とする。
According to the present disclosure, when a gas is generated inside a package with a valve device and the internal pressure is increased, a large wrinkle is formed on the exterior material after the gas is released, or before a problem that a shape is largely deformed is generated. A main object of the present invention is to provide a package with a valve device in which gas is released from the valve device to the outside at an appropriate timing.
本開示者らは、前記課題を解決すべく、鋭意検討を行った。その結果、少なくとも、基材層、バリア層及び熱融着性樹脂層をこの順に有する積層体によって構成されており、内容物を内部に収容する収容体と、当該収容体とは別に、前記収容体の内部と連通する弁装置とを備える弁装置付き包装体とし、さらに、収容体の厚み方向の最大ひずみと弁装置の開放圧力(弁装置の一次側と二次側の差圧)との関係に着目して、収容体の内部の圧力が上昇し、弁装置から収容体の内部のガスが外部に放出された後の収容体の厚み方向の最大ひずみを30%未満に設定することにより、弁装置付き包装体の内部で発生したガスによって内部の圧力が上昇した場合に、ガスの放出後に収容体(すなわち外装材)に大きな皺が形成されたり、形状が大きく変形する不具合が生じる前の適切なタイミングで、弁装置からガスが外部に放出されることを見出した。すなわち、弁装置付き包装体の内部の圧力が上昇した際、収容体の厚みの変化を観察して、厚みが30%薄くなる前に弁装置が開放されるように、弁装置の開放圧力を設定しておくことにより、弁装置が開放された後において、外装材に大きな皺が形成されたり、形状が大きく変形する不具合が効果的に抑制されることを見出した。
The present inventors conducted intensive studies to solve the above-mentioned problems. As a result, at least a base material layer, a barrier layer, and a heat-fusible resin layer are formed in this order, and the container body is configured to house contents therein, and separately from the housing body, A package with a valve device having a valve device communicating with the inside of the body, and furthermore, the maximum strain in the thickness direction of the container and the opening pressure of the valve device (differential pressure between the primary side and the secondary side of the valve device). Focusing on the relationship, by setting the maximum strain in the thickness direction of the container to less than 30% after the pressure inside the container increases and the gas inside the container is released to the outside from the valve device, When the internal pressure is increased by the gas generated inside the package with the valve device, before the gas is released, a large wrinkle is formed on the container (that is, the exterior material) or the shape is largely deformed. At the right time, It found that gas is released to the outside. That is, when the pressure inside the package with the valve device rises, the change in the thickness of the container is observed, and the opening pressure of the valve device is increased so that the valve device is opened before the thickness is reduced by 30%. By setting, it has been found that after the valve device is opened, the problem that large wrinkles are formed on the exterior material or the shape is largely deformed is effectively suppressed.
本開示は、このような知見に基づいて、さらに検討を重ねることにより完成した発明である。すなわち、本開示は、下記に掲げる態様の発明を提供する。
少なくとも、基材層、バリア層及び熱融着性樹脂層をこの順に有する積層体によって構成されており、内容物を内部に収容する、収容体と、
前記収容体の内部と連通する弁装置とを備え、
前記弁装置は、前記収容体の内部において発生したガスに起因して前記収容体の内部の圧力が上昇した場合に該圧力を低下させるように構成されており、
前記収容体の内部の圧力が上昇し、前記弁装置から前記収容体の内部のガスが外部に放出された後の前記収容体の厚み方向の最大ひずみが30%未満である、弁装置付き包装体。 The present disclosure is an invention completed by further study based on such knowledge. That is, the present disclosure provides the following aspects of the invention.
At least, a base body, a barrier layer and a heat-fusible resin layer are constituted by a laminate having in this order, the contents are stored inside, a container,
A valve device communicating with the inside of the container,
The valve device is configured to reduce the pressure when the pressure inside the container increases due to gas generated inside the container,
A package with a valve device, wherein the maximum strain in the thickness direction of the container after the pressure inside the container increases and the gas inside the container is released from the valve device to the outside is less than 30%. body.
少なくとも、基材層、バリア層及び熱融着性樹脂層をこの順に有する積層体によって構成されており、内容物を内部に収容する、収容体と、
前記収容体の内部と連通する弁装置とを備え、
前記弁装置は、前記収容体の内部において発生したガスに起因して前記収容体の内部の圧力が上昇した場合に該圧力を低下させるように構成されており、
前記収容体の内部の圧力が上昇し、前記弁装置から前記収容体の内部のガスが外部に放出された後の前記収容体の厚み方向の最大ひずみが30%未満である、弁装置付き包装体。 The present disclosure is an invention completed by further study based on such knowledge. That is, the present disclosure provides the following aspects of the invention.
At least, a base body, a barrier layer and a heat-fusible resin layer are constituted by a laminate having in this order, the contents are stored inside, a container,
A valve device communicating with the inside of the container,
The valve device is configured to reduce the pressure when the pressure inside the container increases due to gas generated inside the container,
A package with a valve device, wherein the maximum strain in the thickness direction of the container after the pressure inside the container increases and the gas inside the container is released from the valve device to the outside is less than 30%. body.
本開示によれば、弁装置付き包装体の内部でガスが発生し、内部の圧力が上昇した場合に、ガスの放出後の外装材に大きな皺が形成されたり、形状が大きく変形する不具合が生じる前の適切なタイミングで、弁装置からガスが外部に放出される、弁装置付き包装体を提供することができる。
According to the present disclosure, a gas is generated inside a package with a valve device, and when the internal pressure increases, a large wrinkle is formed on the exterior material after the release of the gas, or a problem that the shape is significantly deformed. It is possible to provide a package with a valve device in which gas is released from the valve device to the outside at an appropriate timing before the occurrence.
本開示の弁装置付き包装体は、収容体と、弁装置とを備えている。収容体は、少なくとも、基材層、バリア層及び熱融着性樹脂層をこの順に有する積層体によって構成されている。収容体は、内容物を内部に収容する。弁装置は、収容体の内部と連通する。弁装置は、収容体の内部において発生したガスに起因して収容体の内部の圧力が上昇した場合に該圧力を低下させるように構成されている。さらに、収容体の内部の圧力が上昇し、弁装置から収容体の内部のガスが外部に放出された後の収容体の厚みの厚み方向の最大ひずみが30%未満である。すなわち、本開示の弁装置付き包装体においては、当該厚み方向の最大ひずみが30%未満となるように、弁装置の開放圧力が設定されている。
包装 A package with a valve device according to the present disclosure includes a container and a valve device. The container is constituted by a laminate having at least a base material layer, a barrier layer, and a heat-fusible resin layer in this order. The container stores the contents therein. The valve device communicates with the inside of the container. The valve device is configured to reduce the pressure when the pressure inside the container increases due to the gas generated inside the container. Furthermore, the maximum strain in the thickness direction of the container after the pressure inside the container increases and the gas inside the container is released from the valve device to the outside is less than 30%. That is, in the package with a valve device of the present disclosure, the opening pressure of the valve device is set such that the maximum strain in the thickness direction is less than 30%.
本開示の弁装置付き包装体は、このような特徴を備えていることにより、包装体の内部でガスが発生し、内部の圧力が上昇した場合に、ガスの放出後の外装材に大きな皺が形成されたり、形状が大きく変形する不具合が生じる前の適切なタイミングで、弁装置からガスが外部に放出される。
The package with a valve device according to the present disclosure has such features, and when gas is generated inside the package and the internal pressure increases, a large wrinkle occurs on the exterior material after the gas is released. The gas is discharged from the valve device to the outside at an appropriate timing before a problem is caused or the shape is largely deformed.
以下、本開示の弁装置付き包装体について詳述する。なお、本明細書において、「~」で示される数値範囲は「以上」、「以下」を意味する。例えば、2~15mmとの表記は、2mm以上15mm以下を意味する。また、後述する弁装置の具体的な実施の形態について、図面を参照しながら詳細に説明する。図中同一又は相当部分には同一符号を付してその説明は繰り返さない。
Hereinafter, the package with a valve device according to the present disclosure will be described in detail. In this specification, a numerical range indicated by “to” means “over” and “below”. For example, the notation of 2 to 15 mm means 2 mm or more and 15 mm or less. Further, specific embodiments of a valve device to be described later will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts have the same reference characters allotted, and description thereof will not be repeated.
本開示の弁装置付き包装体においては、収容体が、基材層、バリア層及び熱融着性樹脂層をこの順に有する積層体によって構成されている。当該収容体には、弁装置が取り付けられており、収容体の内部の圧力が上昇して弁装置から収容体の内部のガスが外部に放出された後の収容体の厚みの厚み方向の最大ひずみ(以下、「最大ひずみX」と表記することがある)が30%未満に設定されている。本開示においては、収容体の最大ひずみXと弁装置の開放圧力との関係に着目し、当該最大ひずみXを30%未満に設定することにより、包装体の内部で発生したガスによって内部の圧力が上昇した場合に、ガスの放出後の収容体に大きな皺が形成されたり、形状が大きく変形する不具合が生じる前の適切なタイミングで、弁装置からガスが外部に放出される。すなわち、弁装置付き包装体の内部の圧力が上昇した際、収容体の厚みの変化を観察して、厚みが30%薄くなる前に弁装置が開放されるように、弁装置の開放圧力を設定しておくことにより、弁装置が開放された後において、外装材に大きな皺が形成されたり、形状が大きく変形する不具合が効果的に抑制される。
に お い て In the package with a valve device of the present disclosure, the container is constituted by a laminate having a base material layer, a barrier layer, and a heat-fusible resin layer in this order. A valve device is attached to the container, and the maximum thickness in the thickness direction of the container after the pressure inside the container increases and the gas inside the container is released from the valve device to the outside. The strain (hereinafter, sometimes referred to as “maximum strain X”) is set to less than 30%. In the present disclosure, attention is paid to the relationship between the maximum strain X of the container and the opening pressure of the valve device, and by setting the maximum strain X to less than 30%, the internal pressure due to gas generated inside the package is reduced. When the pressure rises, the gas is released from the valve device to the outside at an appropriate timing before a large wrinkle is formed in the container after the gas is released or a problem that the shape is largely deformed occurs. That is, when the pressure inside the package with the valve device rises, the change in the thickness of the container is observed, and the opening pressure of the valve device is increased so that the valve device is opened before the thickness is reduced by 30%. By setting, after the valve device is opened, a problem that a large wrinkle is formed on the exterior material or a shape is largely deformed is effectively suppressed.
当該最大ひずみXの上限としては、好ましくは約28%以下、より好ましくは27%以下が挙げられる。また、当該最大ひずみXの下限としては、好ましくは約2%以上、より好ましくは約4%以上が挙げられる。最大ひずみXがこのような値を有することにより、ガスの放出後の収容体に大きな皺が形成されたり、形状が大きく変形する不具合が生じる前のより適切なタイミングでガスを外部に放出することができる。当該最大ひずみXの好ましい範囲としては、2%以上30%未満程度、4%以上28%以下程度が挙げられる。
上限 The upper limit of the maximum strain X is preferably about 28% or less, more preferably 27% or less. In addition, the lower limit of the maximum strain X is preferably about 2% or more, more preferably about 4% or more. When the maximum strain X has such a value, the gas is released to the outside at a more appropriate timing before a large wrinkle is formed in the container after the gas is released or a problem that the shape is largely deformed occurs. Can be. A preferable range of the maximum strain X is about 2% to less than 30%, and about 4% to 28%.
<最大ひずみXの測定>
収容体の最大ひずみXは、次のようにして測定する。まず、最大ひずみXの測定対象とする同一の包装体を2つ用意する。次に、それぞれ、包装体の外表面(すなわち、収容体の外表面)に、1mm間隔で格子状に線を引く。このとき、2つの包装体の外表面に引く線の位置は同じにする。次に、一方の包装体について、弁装置を封止して収容体に別の通気路を設けるか、弁装置から弁機能を除去して通気路とし、通気路から包装体の内部に空気を送り込み、内圧を1MPaまで上昇させて包装体を膨らませる。次に、通気路から空気を除いて常圧とし、前記の格子状の線に沿って、包装体を切断し、断面の厚みを測定する。空気を送り込まなかった包装体についても、前記の格子状の線に沿って、包装体を切断し、断面の厚みを測定する。次に、空気を送り込まなかった包装体の同じ位置での厚みを基準として、厚みが最も薄くなっていた部分を最大ひずみ箇所とし、最大ひずみ箇所における厚みの減少割合(%)を最大ひずみX(%)とする。例えば、内圧を上昇させていない包装体について、最大ひずみ箇所の厚みが100μmであり、内圧を上昇させた包装体の当該箇所の厚みが70μmであった場合には、最大ひずみXは30%である。 <Measurement of maximum strain X>
The maximum strain X of the container is measured as follows. First, two identical packages to be measured for the maximum strain X are prepared. Next, lines are drawn in a grid pattern at 1 mm intervals on the outer surface of the package (ie, the outer surface of the container). At this time, the positions of the lines drawn on the outer surfaces of the two packages are the same. Next, for one package, the valve device is sealed to provide another ventilation path in the container, or the valve function is removed from the valve device to form a ventilation path, and air is supplied from the ventilation path to the inside of the package. The package is fed and the internal pressure is increased to 1 MPa to expand the package. Next, the air is removed from the air passage, and the pressure is reduced to normal pressure. The package is cut along the lattice-shaped line, and the thickness of the cross section is measured. Regarding the package to which air has not been supplied, the package is cut along the above-mentioned grid-like line, and the thickness of the cross section is measured. Next, based on the thickness of the package at the same position of the air-introduced package, the portion having the smallest thickness is defined as the maximum strain point, and the reduction rate (%) of the thickness at the maximum strain point is defined as the maximum strain X ( %). For example, when the thickness of the maximum strain point is 100 μm for the package body where the internal pressure is not increased and the thickness of the location of the package body where the internal pressure is increased is 70 μm, the maximum strain X is 30%. is there.
収容体の最大ひずみXは、次のようにして測定する。まず、最大ひずみXの測定対象とする同一の包装体を2つ用意する。次に、それぞれ、包装体の外表面(すなわち、収容体の外表面)に、1mm間隔で格子状に線を引く。このとき、2つの包装体の外表面に引く線の位置は同じにする。次に、一方の包装体について、弁装置を封止して収容体に別の通気路を設けるか、弁装置から弁機能を除去して通気路とし、通気路から包装体の内部に空気を送り込み、内圧を1MPaまで上昇させて包装体を膨らませる。次に、通気路から空気を除いて常圧とし、前記の格子状の線に沿って、包装体を切断し、断面の厚みを測定する。空気を送り込まなかった包装体についても、前記の格子状の線に沿って、包装体を切断し、断面の厚みを測定する。次に、空気を送り込まなかった包装体の同じ位置での厚みを基準として、厚みが最も薄くなっていた部分を最大ひずみ箇所とし、最大ひずみ箇所における厚みの減少割合(%)を最大ひずみX(%)とする。例えば、内圧を上昇させていない包装体について、最大ひずみ箇所の厚みが100μmであり、内圧を上昇させた包装体の当該箇所の厚みが70μmであった場合には、最大ひずみXは30%である。 <Measurement of maximum strain X>
The maximum strain X of the container is measured as follows. First, two identical packages to be measured for the maximum strain X are prepared. Next, lines are drawn in a grid pattern at 1 mm intervals on the outer surface of the package (ie, the outer surface of the container). At this time, the positions of the lines drawn on the outer surfaces of the two packages are the same. Next, for one package, the valve device is sealed to provide another ventilation path in the container, or the valve function is removed from the valve device to form a ventilation path, and air is supplied from the ventilation path to the inside of the package. The package is fed and the internal pressure is increased to 1 MPa to expand the package. Next, the air is removed from the air passage, and the pressure is reduced to normal pressure. The package is cut along the lattice-shaped line, and the thickness of the cross section is measured. Regarding the package to which air has not been supplied, the package is cut along the above-mentioned grid-like line, and the thickness of the cross section is measured. Next, based on the thickness of the package at the same position of the air-introduced package, the portion having the smallest thickness is defined as the maximum strain point, and the reduction rate (%) of the thickness at the maximum strain point is defined as the maximum strain X ( %). For example, when the thickness of the maximum strain point is 100 μm for the package body where the internal pressure is not increased and the thickness of the location of the package body where the internal pressure is increased is 70 μm, the maximum strain X is 30%. is there.
弁装置は、収容体の外部側(すなわち、外部環境)に位置する二次側と、収容体の内部に位置する一次側とを備えており、収容体の内部において発生したガスに起因して収容体の内部の圧力が上昇した場合に該圧力を低下させる(すなわち、一次側から二次側に向かって、収容体の内部で発生したガスが放出される)ように構成されている。弁装置の構造の好ましい形態については、後述する。
The valve device has a secondary side located on the outer side of the container (that is, the external environment) and a primary side located on the inside of the container, and is provided with a gas generated inside the container. When the pressure inside the container increases, the pressure is reduced (that is, the gas generated inside the container is released from the primary side to the secondary side). A preferred embodiment of the structure of the valve device will be described later.
弁装置の一次側と二次側の差圧(すなわち、弁装置の開放圧力)としては、前記の範囲内で包装体の種類等に応じて設定すればよいが、下限については、約0.015MPa以上、好ましくは約0.1MPa以上が挙げられ、上限については、約0.6MPa以下、好ましくは約0.3MPaが挙げられ、好ましい範囲としては、0.015~0.6MPa程度、0.015~0.3MPa程度、0.1~0.6MPa程度、0.1~0.3MPa程度が挙げられる。例えば包装体が内容物を収容した包装体である場合、弁装置の一次側と二次側の差圧をこれらの値に設定することが特に好ましい。弁装置の一次側と二次側の差圧は、常温(25℃)の環境で設定する。
The differential pressure between the primary side and the secondary side of the valve device (that is, the opening pressure of the valve device) may be set in accordance with the type of the package within the above-mentioned range. 015 MPa or more, preferably about 0.1 MPa or more, and the upper limit is about 0.6 MPa or less, preferably about 0.3 MPa, and the preferable range is about 0.015 to 0.6 MPa, 0.1 to 0.5 MPa. Approximately 015 to 0.3 MPa, approximately 0.1 to 0.6 MPa, approximately 0.1 to 0.3 MPa. For example, when the package is a package containing contents, it is particularly preferable to set the differential pressure between the primary side and the secondary side of the valve device to these values. The differential pressure between the primary side and the secondary side of the valve device is set in a normal temperature (25 ° C.) environment.
弁装置の一次側と二次側の差圧は、以下の方法により測定される。
差 The differential pressure between the primary and secondary sides of the valve device is measured by the following method.
<弁装置の一次側と二次側の差圧の測定方法>
弁装置を、金属で作製した測定用治具に設置し、治具の一次側には小型圧力計を介して圧縮空気ボンベ、二次側にはゴムチューブを設置し、ゴムチューブの先は水槽に設置する。このとき、治具や接点からの漏れがないことを予め確認する。一次側の空気ボンベから徐々に空気を弁装置に送り込み、水槽のゴムチューブから気泡が発生し始める圧力を圧力計で読み取って、弁装置の一次側と二次側の差圧を測定する。 <Method of measuring differential pressure between primary and secondary sides of valve device>
The valve device is installed on a measuring jig made of metal, a compressed air cylinder is installed on the primary side of the jig via a small pressure gauge, and a rubber tube is installed on the secondary side. Installed in At this time, it is confirmed in advance that there is no leakage from the jig or the contact. Air is gradually fed into the valve device from the air cylinder on the primary side, and the pressure at which bubbles start to be generated from the rubber tube of the water tank is read by a pressure gauge, and the differential pressure between the primary side and the secondary side of the valve device is measured.
弁装置を、金属で作製した測定用治具に設置し、治具の一次側には小型圧力計を介して圧縮空気ボンベ、二次側にはゴムチューブを設置し、ゴムチューブの先は水槽に設置する。このとき、治具や接点からの漏れがないことを予め確認する。一次側の空気ボンベから徐々に空気を弁装置に送り込み、水槽のゴムチューブから気泡が発生し始める圧力を圧力計で読み取って、弁装置の一次側と二次側の差圧を測定する。 <Method of measuring differential pressure between primary and secondary sides of valve device>
The valve device is installed on a measuring jig made of metal, a compressed air cylinder is installed on the primary side of the jig via a small pressure gauge, and a rubber tube is installed on the secondary side. Installed in At this time, it is confirmed in advance that there is no leakage from the jig or the contact. Air is gradually fed into the valve device from the air cylinder on the primary side, and the pressure at which bubbles start to be generated from the rubber tube of the water tank is read by a pressure gauge, and the differential pressure between the primary side and the secondary side of the valve device is measured.
本発明の弁装置付き包装体において、収容体の内部の設定圧力としては、一定圧力以下に設定されていることが好ましい。内圧の設定値は、弁装置付き包装体の種類に応じて適宜設定されるが好ましくは約0.1MPa以下、より好ましくは約1.0×10-2MPa以下であり、下限については例えば約1.0×10-10MPa以上が挙げられ、当該内部圧力の好ましい範囲としては、1.0×10-10~0.1MPa程度、1.0×10-10~1.0×10-2MPa程度が挙げられる。
In the package with the valve device of the present invention, the set pressure inside the container is preferably set to a certain pressure or less. The set value of the internal pressure is appropriately set according to the type of the package with the valve device, but is preferably about 0.1 MPa or less, more preferably about 1.0 × 10 −2 MPa or less. 1.0 × 10 −10 MPa or more, and the preferable range of the internal pressure is about 1.0 × 10 −10 to 0.1 MPa, and 1.0 × 10 −10 to 1.0 × 10 −2. MPa.
弁装置の一次側と二次側の差圧(弁装置の開放圧力)は、公知の方法により設定することができる。例えば、弁装置の弁機構を構成している部材(例えば、後述のボール、弁座(例えばOリング)、バネ、通気口)の材料、形状、大きさ、さらにはバネによるボールを押しつける力などを設計することによって、前記差圧を調整することができる。
差 The differential pressure between the primary and secondary sides of the valve device (opening pressure of the valve device) can be set by a known method. For example, materials, shapes, and sizes of members (for example, a ball, a valve seat (for example, an O-ring), a spring, and a vent) to be described later that constitute a valve mechanism of the valve device, and a force of pressing the ball by the spring. , The differential pressure can be adjusted.
本開示において、弁装置は逆止弁であることが好ましい。すなわち、本開示の弁装置付き包装体においては、内部の圧力が上昇した場合に、ガスの放出後の外装材に大きな皺が形成されたり、形状が大きく変形する不具合が生じる前の適切なタイミングで、弁装置からガスが外部に放出されるため、弁装置としては、ガスの放出後にも繰り返し使用できる逆止弁が好適である。
に お い て In the present disclosure, the valve device is preferably a check valve. That is, in the package with the valve device according to the present disclosure, when the internal pressure increases, a large wrinkle is formed on the exterior material after the gas is released, or an appropriate timing before a problem that the shape is largely deformed occurs. Since the gas is released from the valve device to the outside, a check valve that can be used repeatedly even after the gas is released is preferable as the valve device.
また、本開示の弁装置付き包装体において、例えば80℃の環境において、弁装置の弁機能を閉塞させて、収容体の内部の圧力を上昇させた場合に、収容体が破裂する際の収容体の内部の圧力(すなわち、破袋内圧)は、例えば、前記弁装置の一次側と二次側の差圧よりも大きく、かつ、例えば0.3MPa以上1MPa以下の範囲内とすることができる。本開示の弁装置付き包装体収容体は、少なくとも、基材層、バリア層及び熱融着性樹脂層をこの順に有する積層体によって構成されているため、収容体の厚みや強度を考慮すると、破袋内圧については、当該範囲程度が適切である。破袋内圧は、熱融着性樹脂層のシール強度や、包装体の厚みなどによって調整される。なお、弁装置付き包装体の破袋内圧は、実施例に記載の方法によって測定される。
Further, in the package with the valve device of the present disclosure, for example, in an environment of 80 ° C., when the valve function of the valve device is closed to increase the pressure inside the container, the container when the container bursts may be stored. The pressure inside the body (that is, the bag-breaking internal pressure) can be, for example, larger than the differential pressure between the primary side and the secondary side of the valve device, and can be, for example, in the range of 0.3 MPa or more and 1 MPa or less. . The package housing with a valve device of the present disclosure is at least, because it is configured by a laminate having a base layer, a barrier layer, and a heat-fusible resin layer in this order, considering the thickness and strength of the housing, As for the internal pressure of the bag breakage, the above range is appropriate. The internal pressure of the bag is adjusted by the sealing strength of the heat-fusible resin layer, the thickness of the package, and the like. The internal pressure of the bag with the valve device is measured by the method described in Examples.
以下、本開示の包装体に取り付けられる弁装置、及び包装体の構造等の好ましい形態について、例示する。
Hereinafter, preferred embodiments of the valve device attached to the package of the present disclosure, the structure of the package, and the like will be described.
弁装置は、第1部分と、第2部分とを含むことが好ましい。第1部分は、収容体の内部において発生したガスに起因して収容体の内部の圧力が上昇した場合に該圧力を低下させる弁機構が内部に形成された部分である。第2部分は、収容体の内部において発生したガスを弁機構へ誘導する通気路が内部に形成された部分である。
The valve device preferably includes a first portion and a second portion. The first portion is a portion in which a valve mechanism for reducing the pressure when the pressure inside the container increases due to the gas generated inside the container is formed inside. The second portion is a portion in which a ventilation path for guiding gas generated inside the container to the valve mechanism is formed.
本開示の包装体の収容体は、少なくとも、基材層、バリア層及び熱融着性樹脂層をこの順に有する積層体によって構成されている。より具体的な態様としては、収容体の周縁においては、熱融着性樹脂層が対向し、収容体の周縁には、対向する熱融着性樹脂層が互いに融着した周縁接合部が形成されている。弁装置において、第1部分は、周縁接合部の端縁よりも外側に位置していることが好ましい。また、第2部分の少なくとも一部は、周縁接合部において熱融着性樹脂層に挟まれていることが好ましい。
収容 The container of the package of the present disclosure is constituted by a laminate having at least a base material layer, a barrier layer, and a heat-fusible resin layer in this order. As a more specific aspect, a heat-fusible resin layer faces the periphery of the container, and a peripheral joint formed by fusing the opposing heat-fusible resin layers to each other is formed at the periphery of the container. Have been. In the valve device, the first portion is preferably located outside the edge of the peripheral joint. Further, it is preferable that at least a part of the second portion is sandwiched between the heat-fusible resin layers at the peripheral joining portion.
この弁装置付き包装体において、周縁接合部で熱融着性樹脂層に挟まれているのは弁装置の第2部分であり、弁装置の第1部分は熱融着性樹脂層に挟まれていないことが好ましい。この弁装置付き包装体においては、対向する熱融着性樹脂層の融着時に第2部分と比較して第1部分に大きい圧力及び熱が加えられない。その結果、この弁装置によれば、対向する熱融着性樹脂層の融着時に加えられる圧力及び熱に起因した、第1部分内の弁機構の故障を抑制することができる。
In this package with a valve device, it is the second portion of the valve device that is sandwiched between the heat-fusible resin layers at the peripheral joint, and the first portion of the valve device is sandwiched between the heat-fusible resin layers. Preferably not. In this package with a valve device, greater pressure and heat are not applied to the first portion than to the second portion during fusion of the opposing heat-fusible resin layers. As a result, according to this valve device, it is possible to suppress the failure of the valve mechanism in the first portion caused by the pressure and heat applied when the opposing heat-fusible resin layers are fused.
好ましくは、包装体の厚み方向において、第1部分の長さは前記第2部分の長さよりも長く、第1部分と第2部分との境界には段差が形成されていてもよい。
Preferably, in the thickness direction of the package, the length of the first portion is longer than the length of the second portion, and a step may be formed at a boundary between the first portion and the second portion.
この弁装置付き包装体においては、少なくとも弁装置付き包装体の厚み方向において第1部分が第2部分よりも長く、第1部分と第2部分との境界には段差が形成されていることが好ましい。したがって、この弁装置付き包装体においては、弁装置付き包装体の製造過程において第2部分を熱融着性樹脂層で挟む時に、仮に弁装置を収容体側に押し込み過ぎたとしても段差部分が積層体の端部に引っ掛かる。したがって、この弁装置付き包装体によれば、弁装置付き包装体の製造過程において、第1部分が誤って熱融着性樹脂層に挟まれる事態を抑制することができる。また、この弁装置付き包装体においては、第1部分と第2部分との境界に段差が設けられていない場合と比較して、周縁接合部のうち第2部分が挟まれている部分における弁装置付き包装体の厚み方向の長さと、周縁接合部のうち第2部分が挟まれていない部分における弁装置付き包装体の厚み方向の長さとの差が小さい。したがって、周縁接合部のうち第2部分が挟まれている部分においては、熱融着性樹脂層に過度な熱量や圧力を加えることなく、熱融着性樹脂層同士が融着されている。その結果、この弁装置付き包装体によれば、熱融着性樹脂層の薄肉化によるシール強度の低下や、絶縁性低下を抑制することができる。ここで、絶縁性低下は、熱融着性樹脂の部分的な薄肉化やクラック等によって、バリア(金属)層と内容物(例えば電解液)との間で通電が生じる現象である。
In this package with a valve device, the first portion is longer than the second portion at least in the thickness direction of the package with the valve device, and a step is formed at a boundary between the first portion and the second portion. preferable. Therefore, in the package with the valve device, when the second portion is sandwiched between the heat-fusible resin layers in the manufacturing process of the package with the valve device, even if the valve device is excessively pushed into the container side, the stepped portion is laminated. Caught on the edge of the body. Therefore, according to this package with a valve device, it is possible to suppress the situation where the first portion is erroneously sandwiched between the heat-fusible resin layers in the manufacturing process of the package with the valve device. Further, in this package with a valve device, the valve in the portion of the peripheral joint where the second portion is sandwiched is compared with a case where no step is provided at the boundary between the first portion and the second portion. The difference between the length in the thickness direction of the package with the device and the length in the thickness direction of the package with the valve device in a portion of the peripheral joining portion where the second portion is not sandwiched is small. Therefore, in the portion where the second portion is sandwiched between the peripheral edge joining portions, the heat-fusible resin layers are fused to each other without applying excessive heat and pressure to the heat-fusible resin layers. As a result, according to this package with a valve device, it is possible to suppress a decrease in seal strength and a decrease in insulation due to the thinning of the heat-fusible resin layer. Here, the decrease in insulation property is a phenomenon in which a current flows between a barrier (metal) layer and a content (for example, an electrolytic solution) due to partial thinning or cracking of the heat-fusible resin.
また、好ましくは、弁装置付き包装体の幅方向における第2部分の長さは、弁装置付き包装体の厚み方向における第2部分の長さよりも長くてもよい。
Preferably, the length of the second portion in the width direction of the package with the valve device may be longer than the length of the second portion in the thickness direction of the package with the valve device.
この弁装置付き包装体においては、第2部分の断面形状が正円(面積は同一)である場合と比較して、弁装置付き包装体の厚み方向における第2部分の長さが短い。すなわち、この弁装置付き包装体においては、周縁接合部のうち第2部分が挟まれている部分における弁装置付き包装体の厚み方向の長さと、周縁接合部のうち第2部分が挟まれていない部分における弁装置付き包装体の厚み方向の長さとの差が小さい。したがって、周縁接合部のうち第2部分が挟まれている部分においては、熱融着性樹脂層に過度な熱量や圧力を加えることなく、熱融着性樹脂層同士が融着されている。その結果、この弁装置付き包装体によれば、熱融着性樹脂層の薄肉化によるシール強度の低下や、絶縁性の低下を抑制することができる。
包装 In this package with a valve device, the length of the second portion in the thickness direction of the package with a valve device is shorter than when the cross-sectional shape of the second portion is a perfect circle (the same area). That is, in the package with the valve device, the length in the thickness direction of the package with the valve device in the portion where the second portion is sandwiched in the peripheral joint portion, and the second portion in the peripheral joint portion is sandwiched. The difference with the length in the thickness direction of the package with the valve device in the portion where there is not is small. Therefore, in the portion where the second portion is sandwiched between the peripheral edge joining portions, the heat-fusible resin layers are fused to each other without applying excessive heat and pressure to the heat-fusible resin layers. As a result, according to the package with a valve device, it is possible to suppress a decrease in seal strength and a decrease in insulation due to the thinning of the heat-fusible resin layer.
また、特に好ましくは、第2部分は、弁装置付き包装体の幅方向の端部に近づくほど薄く形成された翼状延端部を有している。
特 に Particularly preferably, the second portion has a wing-like extending end portion that is formed to be thinner toward an end portion in the width direction of the package with the valve device.
この弁装置付き包装体においては、第2部分に翼状延端部が設けられていない場合と比較して、周縁接合部のうち第2部分が挟まれていない部分から周縁接合部のうち第2部分が挟まれている部分へ移行する位置における弁装置付き包装体の厚み方向の変化が滑らかである。したがって、第2部分が熱融着性樹脂層によって挟まれている位置と第2部分が熱融着性樹脂層に挟まれていない位置との境界において積層体に無理な力が加わっていない。その結果、この弁装置付き包装体によれば、熱融着性樹脂層に過度な熱量や圧力を加えることなく適切に融着させることができるため、熱融着性樹脂の薄肉化によるシール強度の低下や、絶縁性の低下を抑制することができる。
In this package with a valve device, as compared with the case where the wing-shaped extending end is not provided in the second portion, the portion of the peripheral joint where the second portion is not sandwiched is the second portion of the peripheral joint. The change in the thickness direction of the packaging body with the valve device at the position where the portion shifts to the sandwiched portion is smooth. Therefore, no excessive force is applied to the laminate at the boundary between the position where the second portion is sandwiched between the heat-fusible resin layers and the position where the second portion is not sandwiched between the heat-fusible resin layers. As a result, according to this package with a valve device, the heat-fusible resin layer can be appropriately fused without applying an excessive amount of heat or pressure. , And a decrease in insulation can be suppressed.
また、好ましくは、上記通気路の断面形状は円形であってもよい。
Preferably, the cross-sectional shape of the air passage may be circular.
また、好ましくは、弁装置付き包装体の幅方向における上記通気路の断面の長さは、弁装置付き包装体の厚み方向における上記通気路の断面の長さよりも長くてもよい。
Preferably, the length of the cross section of the ventilation path in the width direction of the package with the valve device may be longer than the length of the cross section of the ventilation path in the thickness direction of the package with the valve device.
また、第2部分は、上記通気路内に形成されたピラーを有してもよい。
The second portion may have a pillar formed in the ventilation path.
第2部分の通気路内にピラーが形成されている場合、対向する熱融着性樹脂層に挟まれた第2部分に圧力及び熱が加えられたとしても、通気路が維持される。したがって、この弁装置付き包装体によれば、対向する熱融着性樹脂層の融着時における第2部分内の通気路の破損を抑制することができる。
(4) When pillars are formed in the ventilation path of the second portion, the ventilation path is maintained even when pressure and heat are applied to the second portion sandwiched between the opposing heat-fusible resin layers. Therefore, according to this package with a valve device, it is possible to suppress breakage of the air passage in the second portion when the opposing heat-fusible resin layers are fused.
また、好ましくは、第2部分の外表面はナシ地であってもよい。
Preferably, the outer surface of the second portion may be a pear.
この弁装置付き包装体においては、第2部分の外表面がナシ地であるため、第2部分に当接した位置において熱融着性樹脂が溶けやすい。したがって、この弁装置付き包装体によれば、第2部分の外表面が滑らかな場合と比較して、弁装置の第2部分を収容体に強固に固定することができる。
に お い て In this package with a valve device, since the outer surface of the second portion is a pear, the heat-fusible resin is easily melted at a position in contact with the second portion. Therefore, according to the package with the valve device, the second portion of the valve device can be firmly fixed to the container as compared with the case where the outer surface of the second portion is smooth.
また、好ましくは、第2部分の外表面には、周方向に延びる凸条部が少なくとも1つ形成されていてもよい。
Preferably, at least one ridge extending in the circumferential direction may be formed on the outer surface of the second portion.
凸条部は、熱融着性樹脂層に確実に接するため、積層体に融着しやすい。この弁装置付き包装体においては、凸条部が第2部分の外表面の周方向に延びている。したがって、この弁装置付き包装体によれば、第2部分の周方向において、熱融着性樹脂層と第2部分とを融着させることができる。また、この弁装置付き包装体においては、第2部分に凸条部が形成されていない場合と比較して、第2部分の外表面と熱融着性樹脂との接触面積が大きくなっている。したがって、この弁装置付き包装体によれば、弁装置の第2部分を収容体に比較的強固に固定することができる。また、凸条部を複数設けることによって、第2部分の収容体への固定をさらに強固にすることも可能である。
Because the protruding ridges are securely in contact with the heat-fusible resin layer, they are easily fused to the laminate. In this package with a valve device, the ridge extends in the circumferential direction on the outer surface of the second portion. Therefore, according to this package with a valve device, the heat-fusible resin layer and the second portion can be fused in the circumferential direction of the second portion. Moreover, in this package with a valve device, the contact area between the outer surface of the second portion and the heat-fusible resin is larger than in the case where the convex portion is not formed in the second portion. . Therefore, according to the package with the valve device, the second portion of the valve device can be relatively firmly fixed to the container. In addition, by providing a plurality of ridges, it is possible to further firmly fix the second portion to the container.
また、好ましくは、第2部分において、第1部分側とは反対側の端部の平面視における角が丸みを帯びていてもよい。
Preferably, in the second portion, the corner of the end opposite to the first portion in plan view may be rounded.
この弁装置付き包装体によれば、たとえば、第1部分側とは反対側の端部が収容体の内部に位置する場合には、該端部が収容体内の弁装置付き包装体素子を傷つける可能性を低減することができる。また、この弁装置付き包装体によれば、収容体の内部において、該端部が熱融着性樹脂層を傷つけ、熱融着性樹脂層の絶縁性を低下させる可能性を低減することができる。
According to this package with a valve device, for example, when the end opposite to the first portion is located inside the container, the end damages the package element with the valve device in the container. Possibilities can be reduced. Further, according to the package with the valve device, it is possible to reduce the possibility that the end portion damages the heat-fusible resin layer and lowers the insulating property of the heat-fusible resin layer inside the container. it can.
また、好ましくは、通気路の中心線を法線とする第2部分の断面の外形が多角形であり、該多角形の角が丸みを帯びていてもよい。
Preferably, the outer shape of the cross section of the second portion having the center line of the ventilation path as a normal line is a polygon, and the corners of the polygon may be rounded.
この弁装置付き包装体によれば、たとえば、第2部分において第1部分側とは反対側の端部が収容体の内部に位置する場合には、第2部分のうち収容体内に位置する部分が収容体内の内容物(例えば蓄電デバイス素子)を傷つける可能性を低減することができ、かつ、第2部分のうち熱融着性樹脂層に挟まれている部分が熱融着性樹脂層を傷つけ、熱融着性樹脂層の絶縁性を低下させる可能性を低減することができる。また、この弁装置付き包装体によれば、たとえば、第2部分において第1部分側とは反対側の端部が熱融着性樹脂層によって挟まれている場合には、第2部分が熱融着性樹脂層を傷つけ、熱融着性樹脂層の絶縁性を低下させる可能性を低減することができる。
According to this package with a valve device, for example, when the end of the second portion opposite to the first portion is located inside the container, the portion of the second portion located in the container. Can reduce the possibility of damaging the contents (for example, the electricity storage device element) in the housing, and the portion of the second portion sandwiched between the heat-fusible resin layers serves as the heat-fusible resin layer. Damage and the possibility of lowering the insulating property of the heat-fusible resin layer can be reduced. Further, according to the package with the valve device, for example, when the end of the second portion opposite to the first portion is sandwiched by the heat-fusible resin layer, the second portion is heated. It is possible to reduce the possibility of damaging the fusible resin layer and lowering the insulating property of the thermally fusible resin layer.
また、好ましくは、第1及び第2部分の各々は異なる材料で構成されており、第1部分の材料の融点は、第2部分の材料の融点よりも高くてもよい。第1部分及び第2部分の材料としては、特に制限されず、たとえば、ポリプロピレン(PP)、フッ素系樹脂、ポリエステル系樹脂、ポリイミド系樹脂、ポリカーボネート系樹脂、アクリル樹脂などの樹脂や、ステンレス鋼やアルミニウムなどの金属が挙げられる。
Preferably, each of the first and second portions is made of a different material, and the melting point of the material of the first portion may be higher than the melting point of the material of the second portion. The material of the first portion and the second portion is not particularly limited, and for example, resins such as polypropylene (PP), fluorine resin, polyester resin, polyimide resin, polycarbonate resin, acrylic resin, stainless steel, Metals such as aluminum are mentioned.
この弁装置付き包装体においては、対向する熱融着性樹脂層の融着時に第2部分に圧力及び熱が加えられたとしても、第1部分の材質の融点が第2部分の材質の融点よりも高いため、第1部分が熱によって変形する可能性が低い。したがって、この弁装置付き包装体によれば、対向する熱融着性樹脂層の融着時における第1部分内の弁機構の故障を抑制することができる。
In this package with a valve device, even if pressure and heat are applied to the second portion at the time of fusing the opposing heat-fusible resin layers, the melting point of the material of the first portion is the melting point of the material of the second portion. Therefore, the first portion is less likely to be deformed by heat. Therefore, according to the package with the valve device, it is possible to suppress the failure of the valve mechanism in the first portion at the time of fusing the opposing heat-fusible resin layers.
また、好ましくは、第1及び第2部分の少なくとも一方の外表面の少なくとも一部に平面が形成されていてもよい。
Preferably, a plane may be formed on at least a part of the outer surface of at least one of the first and second portions.
この弁装置付き包装体においては、弁装置の外表面に平面が形成されているため、弁装置の転がりが防止される。したがって、この弁装置付き包装体によれば、弁装置の収容体への取り付け時に、弁装置が転がらないため、弁装置の位置決めを容易に行なうことができる。
包装 In this package with a valve device, since the flat surface is formed on the outer surface of the valve device, the rolling of the valve device is prevented. Therefore, according to the package with the valve device, the valve device does not roll when the valve device is attached to the container, so that the valve device can be easily positioned.
以下に、本開示の弁装置付き包装体及び弁装置の具体的な実施の形態を例示する。以下の実施の形態では、弁装置付き包装体は、内容物として蓄電デバイス素子が収容体に収容されている蓄電デバイスである。ただし、本開示の弁装置付き包装体及び弁装置は、以下のものに限定されない。
Hereinafter, specific embodiments of the package with a valve device and the valve device according to the present disclosure will be described. In the following embodiments, a package with a valve device is a power storage device in which a power storage device element is contained as a content in a container. However, the package with a valve device and the valve device of the present disclosure are not limited to the following.
[1.実施の形態1]
<1-1.弁装置付き包装体の概要>
図1は、本実施の形態1に従う弁装置付き包装体10の平面図である。図2は、図1のII-II断面図である。弁装置付き包装体10は、タブ300の正極と負極が反対側に配置されており、たとえば弁装置付き包装体が蓄電デバイスである場合について、蓄電デバイスを多数直列接続して高電圧で使用する電気自動車やハイブリッド自動車等の電動車両用に配慮した形態である。 [1. Embodiment 1]
<1-1. Outline of package with valve device>
FIG. 1 is a plan view of package 10 with a valve device according to the first embodiment. FIG. 2 is a sectional view taken along line II-II of FIG. In the package 10 with a valve device, the positive electrode and the negative electrode of thetab 300 are arranged on opposite sides. For example, when the package with a valve device is a power storage device, a large number of power storage devices are connected in series and used at a high voltage. This is a form in consideration for electric vehicles such as electric vehicles and hybrid vehicles.
<1-1.弁装置付き包装体の概要>
図1は、本実施の形態1に従う弁装置付き包装体10の平面図である。図2は、図1のII-II断面図である。弁装置付き包装体10は、タブ300の正極と負極が反対側に配置されており、たとえば弁装置付き包装体が蓄電デバイスである場合について、蓄電デバイスを多数直列接続して高電圧で使用する電気自動車やハイブリッド自動車等の電動車両用に配慮した形態である。 [1. Embodiment 1]
<1-1. Outline of package with valve device>
FIG. 1 is a plan view of package 10 with a valve device according to the first embodiment. FIG. 2 is a sectional view taken along line II-II of FIG. In the package 10 with a valve device, the positive electrode and the negative electrode of the
図1及び図2に示されるように、弁装置付き包装体10は、収容体100と、内容物400と、タブ300と、タブフィルム310と、弁装置200とを含んでいる。収容体100は、平面視矩形状を有しており、弁装置200は、収容体100のタブ300が存在している辺とは異なる位置に存在している。なお、収容体100は、平面視矩形状に限定されず、例えば、平面視円形状、平面視L字形状、又は平面視不定形状であってもよい。なお、前述の通り、本発明において、収容体100の最大ひずみXは、前記の測定方法によって測定されるため、収容体100の形状に拘わらず、最大ひずみXを前記の方法によって確認することができる。例えば車載用や定置用の中型、大型の蓄電デバイスにおいては、セルをスタックしてモジュール化するため、弁装置200は収容体100の周縁に設けることが好ましい。さらに、平面視矩形状の収容体100において、タブ300が位置する辺と同一の辺に弁装置200を取り付けると、タブ300と弁装置200とを同時に取り付けることができるため、生産効率に優れている。一方、図1のように、タブ300が位置する辺と異なる辺に弁装置200を取り付けると、弁装置200からガスを外部に放出する際に、タブ300にガスが付着してタブ300の接続等に悪影響を与えることが抑制される。
As shown in FIGS. 1 and 2, the package 10 with a valve device includes a container 100, contents 400, a tab 300, a tab film 310, and a valve device 200. The container 100 has a rectangular shape in a plan view, and the valve device 200 is located at a position different from the side where the tab 300 of the container 100 exists. The container 100 is not limited to a rectangular shape in plan view, and may be, for example, a circular shape in plan view, an L-shape in plan view, or an irregular shape in plan view. As described above, in the present invention, since the maximum strain X of the container 100 is measured by the above-described measuring method, regardless of the shape of the container 100, the maximum strain X can be confirmed by the above method. it can. For example, in a medium-sized or large-sized power storage device for in-vehicle use or stationary use, the valve device 200 is preferably provided on the periphery of the container 100 in order to stack the cells into a module. Furthermore, when the valve device 200 is attached to the same side as the side where the tab 300 is located in the container 100 having a rectangular shape in a plan view, the tab 300 and the valve device 200 can be attached at the same time. I have. On the other hand, as shown in FIG. 1, when the valve device 200 is attached to a side different from the side where the tab 300 is located, when the gas is discharged from the valve device 200 to the outside, the gas adheres to the tab 300 and the connection of the tab 300 is performed. And the like.
収容体100は、包装材料110,120を含んでいる。収容体100の周縁においては、包装材料110,120がヒートシールされ、周縁接合部130が形成されている。すなわち、周縁接合部130においては、包装材料110,120が互いに融着している。包装材料110,120については後程詳しく説明する。
The container 100 includes the packaging materials 110 and 120. At the periphery of the container 100, the packaging materials 110 and 120 are heat-sealed to form a peripheral joint 130. That is, in the peripheral joint portion 130, the packaging materials 110 and 120 are fused to each other. The packaging materials 110 and 120 will be described later in detail.
内容物400は、たとえば、リチウムイオン蓄電デバイスやキャパシタ等の蓄電部材(蓄電デバイス素子)である。内容物400は、収容体100の内部に収容される。内容物400が蓄電デバイス素子である場合、蓄電デバイス素子に異常が生じると、収容体100内においてガスが発生し得る。また、たとえば、内容物400がキャパシタである場合には、キャパシタにおける化学反応に起因して収容体100内においてガスが発生し得る。
The content 400 is, for example, a power storage member (power storage device element) such as a lithium ion power storage device or a capacitor. The contents 400 are housed inside the housing 100. In the case where the content 400 is a power storage device element, when an abnormality occurs in the power storage device element, gas may be generated in the container 100. Further, for example, when the content 400 is a capacitor, gas may be generated in the container 100 due to a chemical reaction in the capacitor.
タブ300は、内容物400が蓄電デバイス素子である場合について、電力の入出力に用いられる金属端子である。タブ300の一方の端部は内容物400(蓄電デバイス素子)の電極(正極又は負極)に電気的に接続されており、他方の端部は収容体100の端縁から外側に突出している。
The tab 300 is a metal terminal used for input / output of electric power when the content 400 is a power storage device element. One end of the tab 300 is electrically connected to the electrode (positive electrode or negative electrode) of the content 400 (electric storage device element), and the other end protrudes outward from the edge of the container 100.
タブ300を構成する金属材料は、たとえば、アルミニウム、ニッケル、銅等である。たとえば、内容物400(蓄電デバイス素子)がリチウムイオン蓄電デバイスである場合、正極に接続されるタブ300は、通常、アルミニウム等によって構成され、負極に接続されるタブ300は、通常、銅、ニッケル等によって構成される。
The metal material forming the tab 300 is, for example, aluminum, nickel, copper or the like. For example, when the content 400 (power storage device element) is a lithium ion power storage device, the tab 300 connected to the positive electrode is usually made of aluminum or the like, and the tab 300 connected to the negative electrode is usually copper, nickel, or the like. Etc.
弁装置付き包装体10においては、2つのタブ300が含まれている。一方のタブ300は、収容体100における矢印L方向の端部において、タブフィルム310を介して包装材料110,120に挟まれている。他方のタブ300は、収容体100における矢印R方向の端部において、タブフィルム310を介して包装材料110,120に挟まれている。
包装 In the package 10 with a valve device, two tabs 300 are included. One tab 300 is sandwiched between packaging materials 110 and 120 via a tab film 310 at an end of the container 100 in the direction of the arrow L. The other tab 300 is sandwiched between packaging materials 110 and 120 via a tab film 310 at an end of the container 100 in the direction of arrow R.
タブフィルム310は、接着性保護フィルムであり、包装材料110,120及びタブ300(金属)の両方と接着するように構成されている。タブフィルム310を介することによって、金属製のタブ300を包装材料110,120で固定することができる。また、タブフィルム310は、特に高電圧で用いる場合、耐熱層あるいは耐熱成分を含み、短絡防止機能を有することが好ましい。
The tab film 310 is an adhesive protective film, and is configured to adhere to both the packaging materials 110 and 120 and the tab 300 (metal). By interposing the tab film 310, the metal tab 300 can be fixed with the packaging materials 110 and 120. Further, when the tab film 310 is used particularly at a high voltage, it is preferable that the tab film 310 contains a heat-resistant layer or a heat-resistant component and has a short-circuit preventing function.
弁装置200は、収容体100の内部と連通しており、収容体100内で発生したガスに起因して収容体100内の圧力が所定値以上となった場合に、収容体100内のガスを外部に放出するように構成されている。弁装置200の筐体は、包装材料110,120の最内層と直に接着する材料が好ましく、包装材料110,120の最内層と同じ熱融着性を備えた樹脂、たとえば、ポリプロピレン(PP)等の樹脂によって構成されているのが好ましい。仮に耐熱性等の理由でPP以外の異材質を使用する場合、タブに使用するタブフィルムと同様に、その異材質とPPの両方に接着可能なフィルムを介在してシールする方法が有効である。弁装置200の矢印B方向の端部側は、収容体100の矢印F方向の端部側において、包装材料110,120に挟まれている。弁装置200については、後程詳しく説明する。
The valve device 200 communicates with the inside of the container 100, and when the pressure in the container 100 becomes equal to or higher than a predetermined value due to the gas generated in the container 100, the gas in the container 100. To the outside. The casing of the valve device 200 is preferably made of a material that directly adheres to the innermost layers of the packaging materials 110 and 120, and a resin having the same heat-fusing property as the innermost layers of the packaging materials 110 and 120, for example, polypropylene (PP). And the like. If a different material other than PP is used for reasons such as heat resistance, a method in which a film that can be bonded to both the different material and PP is interposed and sealed as in the case of the tab film used for the tab is effective. . The end of the valve device 200 in the direction of arrow B is sandwiched between the packaging materials 110 and 120 at the end of the container 100 in the direction of arrow F. The valve device 200 will be described later in detail.
本実施の形態1に従う弁装置付き包装体10においては、弁装置200を収容体100に取り付けるに当たって、様々な構造上の工夫が採用されている。以下、収容体100の構成、弁装置200の構成、収容体100への弁装置200の取付け状態、及び、弁装置付き包装体10の製造方法について順に説明する。
In the package 10 with a valve device according to the first embodiment, various structural devices are employed to attach the valve device 200 to the container 100. Hereinafter, the configuration of the container 100, the configuration of the valve device 200, the state of attachment of the valve device 200 to the container 100, and the method of manufacturing the package 10 with the valve device will be described in order.
なお、矢印LRUDFBの各々が示す方向は、各図面において共通である。以下では、矢印LR方向を「弁装置付き包装体10の幅方向」とも称し、矢印UD方向を「弁装置付き包装体10の厚み方向」とも称する。
The direction indicated by each of the arrows LRUDFFB is common in each drawing. Hereinafter, the arrow LR direction is also referred to as “the width direction of the package 10 with the valve device”, and the arrow UD direction is also referred to as “the thickness direction of the package 10 with the valve device”.
<1-2.収容体の構成>
図3は、収容体100を示す図である。図3に示されるように、収容体100は、包装材料110,120を含んでいる。包装材料110,120の各々は、いわゆるラミネートフィルムで構成されており、平面視における形状は略同一の矩形形状である。 <1-2. Configuration of container>
FIG. 3 is a diagram illustrating thecontainer 100. As shown in FIG. 3, the container 100 includes packaging materials 110 and 120. Each of the packaging materials 110 and 120 is formed of a so-called laminate film, and has a substantially identical rectangular shape in plan view.
図3は、収容体100を示す図である。図3に示されるように、収容体100は、包装材料110,120を含んでいる。包装材料110,120の各々は、いわゆるラミネートフィルムで構成されており、平面視における形状は略同一の矩形形状である。 <1-2. Configuration of container>
FIG. 3 is a diagram illustrating the
包装材料110は、空間S1が形成されるように成形された成形部112と、成形部112から矢印FB方向及び矢印LR方向に延びるフランジ部114とを含んでいる。成形部112においては、矢印U方向の面が開放されている。該開放されている面を通じて、内容物400(図1)が空間S1内に配置される。
The packaging material 110 includes a molded portion 112 molded so as to form the space S1, and a flange portion 114 extending from the molded portion 112 in the arrow FB direction and the arrow LR direction. In the forming part 112, the surface in the direction of the arrow U is open. The contents 400 (FIG. 1) are arranged in the space S1 through the open surface.
図4は、包装材料110,120の断面構造の一例を示す図である。図4に示されるように、包装材料110,120の各々は、基材層31、接着剤層32、バリア層33、接着層34及び熱融着性樹脂層35がこの順に積層された積層体である。なお、包装材料110,120の各々は、必ずしも図4に示される各層を含む必要はなく、少なくとも、基材層31、バリア層33及び熱融着性樹脂層35をこの順に有していればよい。
FIG. 4 is a diagram showing an example of a cross-sectional structure of the packaging materials 110 and 120. As shown in FIG. 4, each of the packaging materials 110 and 120 is a laminate in which a base material layer 31, an adhesive layer 32, a barrier layer 33, an adhesive layer 34, and a heat-fusible resin layer 35 are laminated in this order. It is. In addition, each of the packaging materials 110 and 120 does not necessarily need to include each layer shown in FIG. 4, as long as it has at least the base layer 31, the barrier layer 33, and the heat-fusible resin layer 35 in this order. Good.
収容体100においては、基材層31が最外層となり、熱融着性樹脂層35が最内層となる。弁装置付き包装体10の組立て時に、空間S1(図3)内に内容物400(図2)が配置された状態で、包装材料110,120の各々の周縁に位置する熱融着性樹脂層35同士を熱融着することによって、周縁接合部130が形成され、内容物400が収容体100内に密封され、弁装置200が周縁接合部130に融着して固定され、さらに、タブ300もタブフィルム310を介して周縁接合部130に融着して固定される。以下、包装材料110,120に含まれる各層について説明する。なお、包装材料110,120の厚さとしては、たとえば、50~250μm程度、好ましくは90~200μm程度が挙げられる。
In the container 100, the base material layer 31 is the outermost layer, and the heat-fusible resin layer 35 is the innermost layer. At the time of assembling the package 10 with the valve device, the heat-fusible resin layer located at the periphery of each of the packaging materials 110 and 120 with the contents 400 (FIG. 2) arranged in the space S1 (FIG. 3). 35 are thermally fused to form a peripheral joint 130, the contents 400 are sealed in the container 100, the valve device 200 is fused and fixed to the peripheral joint 130, and the tab 300 Is also fixed by fusing to the peripheral joining portion 130 via the tab film 310. Hereinafter, each layer included in the packaging materials 110 and 120 will be described. The thickness of the packaging materials 110 and 120 is, for example, about 50 to 250 μm, preferably about 90 to 200 μm.
(1-2-1.基材層)
基材層31は、包装材料110,120の基材として機能する層であり、収容体100の最外層側を形成する層である。 (1-2-1. Base material layer)
Thebase material layer 31 is a layer that functions as a base material of the packaging materials 110 and 120, and is a layer that forms the outermost layer side of the container 100.
基材層31は、包装材料110,120の基材として機能する層であり、収容体100の最外層側を形成する層である。 (1-2-1. Base material layer)
The
基材層31を形成する素材は、絶縁性を備えることを限度として特に制限されない。基材層31を形成する素材としては、たとえば、ポリエステル、ポリアミド、エポキシ、アクリル、フッ素樹脂、ポリウレタン、珪素樹脂、フェノール、ポリエーテルイミド、ポリイミド、ポリカーボネート及びこれらの混合物や共重合物等が挙げられる。基材層31は、たとえば、上記の樹脂により形成された樹脂フィルムであってもよいし、上記の樹脂を塗布して形成したものであってもよい。樹脂フィルムは、未延伸フィルムであってもよいし、延伸フィルムであってもよい。延伸フィルムとしては、一軸延伸フィルム、二軸延伸フィルムが挙げられ、二軸延伸フィルムが好ましい。二軸延伸フィルムを形成する延伸方法としては、例えば、逐次二軸延伸法、インフレーション法、同時二軸延伸法等が挙げられる。さらに、基材層31は、単層であってもよいし、2層以上により構成されていてもよい。基材層31が2層以上により構成されている場合、基材層31は、樹脂フィルムを接着剤などで積層させた積層体であってもよいし、樹脂を共押出しして2層以上とした樹脂フィルムの積層体であってもよい。また、樹脂を共押出しして2層以上とした樹脂フィルムの積層体を、未延伸のまま基材層31としてもよいし、一軸延伸または二軸延伸して基材層31としてもよい。基材層31が、2層以上の樹脂フィルムの積層体の具体例としては、ポリエステルフィルムとナイロンフィルムとの積層体、2層以上のナイロンフィルムの積層体、2層以上のポリエステルフィルムの積層体などが挙げられ、好ましくは、延伸ナイロンフィルムと延伸ポリエステルフィルムとの積層体、2層以上の延伸ナイロンフィルムの積層体、2層以上の延伸ポリエステルフィルムの積層体が好ましい。例えば、基材層31が2層の樹脂フィルムの積層体である場合、ポリエステル樹脂フィルムとポリエステル樹脂フィルムの積層体、ポリアミド樹脂フィルムとポリアミド樹脂フィルムの積層体、またはポリエステル樹脂フィルムとポリアミド樹脂フィルムの積層体が好ましく、ポリエチレンテレフタレートフィルムとポリエチレンテレフタレートフィルムの積層体、ナイロンフィルムとナイロンフィルムの積層体、またはポリエチレンテレフタレートフィルムとナイロンフィルムの積層体がより好ましい。また、ポリエステル樹脂は、基材層31の最外層に位置することが好ましい。
素材 The material for forming the base material layer 31 is not particularly limited as long as it has insulating properties. Examples of the material forming the base layer 31 include polyester, polyamide, epoxy, acrylic, fluororesin, polyurethane, silicon resin, phenol, polyetherimide, polyimide, polycarbonate, and mixtures and copolymers thereof. . The base layer 31 may be, for example, a resin film formed of the above resin, or may be formed by applying the above resin. The resin film may be an unstretched film or a stretched film. Examples of the stretched film include a uniaxially stretched film and a biaxially stretched film, and a biaxially stretched film is preferable. Examples of a stretching method for forming a biaxially stretched film include a sequential biaxial stretching method, an inflation method, and a simultaneous biaxial stretching method. Furthermore, the base material layer 31 may be a single layer, or may be composed of two or more layers. When the base layer 31 is composed of two or more layers, the base layer 31 may be a laminate in which a resin film is laminated with an adhesive or the like, or may be formed by co-extruding a resin and forming two or more layers. It may be a laminated body of a resin film obtained. Further, a laminate of two or more resin films obtained by co-extrusion of a resin may be used as the base material layer 31 without stretching, or may be used as the base material layer 31 by uniaxial stretching or biaxial stretching. As a specific example of the laminate of the resin film in which the base material layer 31 is two or more layers, a laminate of a polyester film and a nylon film, a laminate of two or more nylon films, a laminate of two or more polyester films Preferred are a laminate of a stretched nylon film and a stretched polyester film, a laminate of two or more stretched nylon films, and a laminate of two or more stretched polyester films. For example, when the base layer 31 is a laminate of a two-layer resin film, a laminate of a polyester resin film and a polyester resin film, a laminate of a polyamide resin film and a polyamide resin film, or a laminate of a polyester resin film and a polyamide resin film. A laminate is preferable, and a laminate of a polyethylene terephthalate film and a polyethylene terephthalate film, a laminate of a nylon film and a nylon film, or a laminate of a polyethylene terephthalate film and a nylon film is more preferable. Further, it is preferable that the polyester resin is located in the outermost layer of the base material layer 31.
基材層31の厚さとしては、たとえば、3~50μm程度、好ましくは10~35μm程度が挙げられる。
The thickness of the base layer 31 is, for example, about 3 to 50 μm, preferably about 10 to 35 μm.
(1-2-2.接着剤層)
接着剤層32は、基材層31に密着性を付与するために、基材層31上に必要に応じて配置される層である。すなわち、接着剤層32は、基材層31とバリア層33との間に必要に応じて設けられる。 (1-2-2. Adhesive layer)
Theadhesive layer 32 is a layer that is disposed as necessary on the base layer 31 in order to impart adhesion to the base layer 31. That is, the adhesive layer 32 is provided between the base layer 31 and the barrier layer 33 as needed.
接着剤層32は、基材層31に密着性を付与するために、基材層31上に必要に応じて配置される層である。すなわち、接着剤層32は、基材層31とバリア層33との間に必要に応じて設けられる。 (1-2-2. Adhesive layer)
The
接着剤層32は、基材層31とバリア層33とを接着可能な接着剤によって形成される。接着剤層32の形成に使用される接着剤は、2液硬化型接着剤であってもよいし、1液硬化型接着剤であってもよい。また、接着剤層32の形成に使用される接着剤の接着機構は、特に制限されず、化学反応型、溶剤揮発型、熱溶融型及び熱圧着型等のいずれであってもよい。
The adhesive layer 32 is formed of an adhesive capable of bonding the base layer 31 and the barrier layer 33. The adhesive used to form the adhesive layer 32 may be a two-part curable adhesive or a one-part curable adhesive. The bonding mechanism of the adhesive used for forming the adhesive layer 32 is not particularly limited, and may be any of a chemical reaction type, a solvent evaporation type, a hot-melt type, and a thermocompression bonding type.
接着剤層32の厚さとしては、たとえば、1~10μm程度、好ましくは2~5μm程度が挙げられる。
The thickness of the adhesive layer 32 is, for example, about 1 to 10 μm, preferably about 2 to 5 μm.
(1-2-3.バリア層)
バリア層33は、包装材料110,120の強度向上の他、弁装置付き包装体10内に水蒸気、酸素、光等が侵入することを防止する機能を有する層である。バリア層33を構成する金属としては、たとえば、アルミニウム、ステンレス、チタン等が挙げられ、好ましくはアルミニウムが挙げられる。バリア層33は、たとえば、金属箔や金属蒸着膜、無機酸化物蒸着膜、炭素含有無機酸化物蒸着膜、及び、これらの蒸着膜を設けたフィルム等により形成することができ、金属箔により形成することが好ましく、アルミニウム箔により形成することがさらに好ましい。各包装材料の製造時に、バリア層33にしわやピンホールが発生することを防止する観点からは、バリア層は、たとえば、焼きなまし処理済みのアルミニウム(JIS H4160:1994 A8021H-O、JIS H4160:1994 A8079H-O、JIS H4000:2014 A8021P-O、JIS H4000:2014 A8079P-O)等軟質アルミニウム箔により形成することがより好ましい。 (1-2-3. Barrier layer)
Thebarrier layer 33 is a layer having a function of preventing the invasion of water vapor, oxygen, light, and the like into the package 10 with a valve device, in addition to improving the strength of the packaging materials 110 and 120. Examples of the metal forming the barrier layer 33 include aluminum, stainless steel, titanium, and the like, and preferably aluminum. The barrier layer 33 can be formed of, for example, a metal foil, a metal vapor-deposited film, an inorganic oxide vapor-deposited film, a carbon-containing inorganic oxide vapor-deposited film, and a film provided with these vapor-deposited films. Preferably, it is more preferably formed of aluminum foil. From the viewpoint of preventing the generation of wrinkles and pinholes in the barrier layer 33 during the production of each packaging material, the barrier layer is made of, for example, annealed aluminum (JIS H4160: 1994 A8021H-O, JIS H4160: 1994). A8079H-O, JIS H4000: 2014 A8021P-O, JIS H4000: 2014 A8079P-O) and the like are more preferably formed of a soft aluminum foil.
バリア層33は、包装材料110,120の強度向上の他、弁装置付き包装体10内に水蒸気、酸素、光等が侵入することを防止する機能を有する層である。バリア層33を構成する金属としては、たとえば、アルミニウム、ステンレス、チタン等が挙げられ、好ましくはアルミニウムが挙げられる。バリア層33は、たとえば、金属箔や金属蒸着膜、無機酸化物蒸着膜、炭素含有無機酸化物蒸着膜、及び、これらの蒸着膜を設けたフィルム等により形成することができ、金属箔により形成することが好ましく、アルミニウム箔により形成することがさらに好ましい。各包装材料の製造時に、バリア層33にしわやピンホールが発生することを防止する観点からは、バリア層は、たとえば、焼きなまし処理済みのアルミニウム(JIS H4160:1994 A8021H-O、JIS H4160:1994 A8079H-O、JIS H4000:2014 A8021P-O、JIS H4000:2014 A8079P-O)等軟質アルミニウム箔により形成することがより好ましい。 (1-2-3. Barrier layer)
The
バリア層33は、平均結晶粒径が20μm以下のアルミニウム箔により構成されていることが特に好ましい。このようなアルミニウム箔は、成形性に優れている。アルミニウム箔の平均結晶粒径は、アルミニウム箔の厚み方向の断面を走査型電子顕微鏡(SEM)で観察し、視野内に位置する100個のアルミニウム合金の結晶粒33aについて、図31の模式図に示されるように、個々の結晶粒の厚み方向とは垂直方向の最左端と、厚み方向とは垂直方向の最右端とを結ぶ直線距離を最大径xとした際、100個の結晶粒の当該最大径xの平均値を意味する。なお、図31は模式図であるため、描画を省略し、結晶粒33aを100個描いてない。
It is particularly preferable that the barrier layer 33 is made of an aluminum foil having an average crystal grain size of 20 μm or less. Such an aluminum foil is excellent in formability. The average crystal grain size of the aluminum foil is obtained by observing a cross section in the thickness direction of the aluminum foil with a scanning electron microscope (SEM), and calculating the crystal grain 33a of 100 aluminum alloys located in the field of view in the schematic diagram of FIG. As shown, when the maximum distance x is a straight line distance connecting the leftmost end in the vertical direction with the thickness direction of each crystal grain and the rightmost end in the vertical direction with the thickness direction, the corresponding 100 It means the average value of the maximum diameter x. Since FIG. 31 is a schematic diagram, the drawing is omitted and 100 crystal grains 33a are not drawn.
バリア層33の厚みは、水蒸気等のバリア層として機能すれば特に制限されないが、たとえば、10~100μm程度、好ましくは30~100μm程度、より好ましくは20~80μm程度とすることができる。なお、弁装置付き包装体が車載用、定置用などの中型、大型の蓄電デバイスである場合には、収容体に十分な大きさの成形部を形成しつつ、高い強度を担保する観点から、バリア層33の厚みは、30~100μm程度であることが好ましい。
The thickness of the barrier layer 33 is not particularly limited as long as it functions as a barrier layer for water vapor or the like, but can be, for example, about 10 to 100 μm, preferably about 30 to 100 μm, and more preferably about 20 to 80 μm. When the package with a valve device is a medium-sized or large-sized power storage device such as a vehicle-mounted or stationary one, from the viewpoint of securing a high strength while forming a sufficiently large molded portion in the container, The thickness of the barrier layer 33 is preferably about 30 to 100 μm.
(1-2-4.接着層)
接着層34は、熱融着性樹脂層35を強固に接着するために、バリア層33と熱融着性樹脂層35との間に、必要に応じて設けられる層である。 (1-2-4. Adhesive layer)
Theadhesive layer 34 is a layer provided as needed between the barrier layer 33 and the heat-fusible resin layer 35 in order to firmly adhere the heat-fusible resin layer 35.
接着層34は、熱融着性樹脂層35を強固に接着するために、バリア層33と熱融着性樹脂層35との間に、必要に応じて設けられる層である。 (1-2-4. Adhesive layer)
The
接着層34は、バリア層33と熱融着性樹脂層35とを接着可能な接着剤によって形成される。接着層34の形成に使用される接着剤の組成は、特に制限されないが、たとえば、酸変性ポリオレフィンを含む樹脂組成物である。酸変性ポリオレフィンとしては、酸変性されたポリオレフィンであれば特に制限されないが、好ましくは不飽和カルボン酸又はその無水物でグラフト変性されたポリオレフィンが挙げられる。
The adhesive layer 34 is formed of an adhesive capable of adhering the barrier layer 33 and the heat-fusible resin layer 35. The composition of the adhesive used to form the adhesive layer 34 is not particularly limited, but is, for example, a resin composition containing an acid-modified polyolefin. The acid-modified polyolefin is not particularly limited as long as it is an acid-modified polyolefin, but preferably includes a polyolefin graft-modified with an unsaturated carboxylic acid or an anhydride thereof.
接着層34の厚さとしては、たとえば、1~50μm程度、好ましくは2~40μm程度が挙げられる。
The thickness of the adhesive layer 34 is, for example, about 1 to 50 μm, preferably about 2 to 40 μm.
(1-2-5.熱融着性樹脂層)
熱融着性樹脂層35は、収容体100の最内層を形成する。熱融着性樹脂層35は、収容体100の周縁において、対向する熱融着性樹脂層と熱融着することによって、内容物400を収容体100内に密封する。また、熱融着性樹脂が一定の膜厚以上でバリア層を覆う事で、電解液とバリア層金属との絶縁性を保つことができる。 (1-2-5. Heat-fusible resin layer)
The heat-fusible resin layer 35 forms the innermost layer of the container 100. The heat-fusible resin layer 35 hermetically seals the contents 400 in the container 100 by heat-sealing the opposing heat-fusible resin layer at the periphery of the container 100. In addition, since the heat-fusible resin covers the barrier layer with a certain thickness or more, the insulation between the electrolytic solution and the metal of the barrier layer can be maintained.
熱融着性樹脂層35は、収容体100の最内層を形成する。熱融着性樹脂層35は、収容体100の周縁において、対向する熱融着性樹脂層と熱融着することによって、内容物400を収容体100内に密封する。また、熱融着性樹脂が一定の膜厚以上でバリア層を覆う事で、電解液とバリア層金属との絶縁性を保つことができる。 (1-2-5. Heat-fusible resin layer)
The heat-
熱融着性樹脂層35に使用される樹脂成分は、熱融着可能であることを限度として特に制限されないが、たとえば、ポリオレフィン、酸変性ポリオレフィン等である。
樹脂 The resin component used in the heat-fusible resin layer 35 is not particularly limited as long as it can be heat-fused, and is, for example, a polyolefin, an acid-modified polyolefin, or the like.
ポリオレフィンとしては、たとえば、低密度ポリエチレン、中密度ポリエチレン、高密度ポリエチレン、線状低密度ポリエチレン等のポリエチレン;ホモポリプロピレン、ポリプロピレンのブロックコポリマー(たとえば、プロピレンとエチレンのブロックコポリマー)、ポリプロピレンのランダムコポリマー(たとえば、プロピレンとエチレンのランダムコポリマー)等の結晶性又は非晶性のポリプロピレン;エチレン-ブテン-プロピレンのターポリマー等が挙げられる。これらのポリオレフィンの中でも、好ましくはポリエチレン及びポリプロピレンが挙げられる。また、酸変性ポリオレフィンとしては、酸変性されたポリオレフィンであれば特に制限されないが、好ましくは不飽和カルボン酸又はその無水物でグラフト変性されたポリオレフィンが挙げられる。
Examples of the polyolefin include polyethylene such as low-density polyethylene, medium-density polyethylene, high-density polyethylene, and linear low-density polyethylene; homopolypropylene, block copolymers of polypropylene (eg, block copolymers of propylene and ethylene), and random copolymers of polypropylene ( For example, crystalline or amorphous polypropylene such as a random copolymer of propylene and ethylene); terpolymer of ethylene-butene-propylene; Among these polyolefins, polyethylene and polypropylene are preferred. The acid-modified polyolefin is not particularly limited as long as it is an acid-modified polyolefin, but preferably includes a polyolefin graft-modified with an unsaturated carboxylic acid or an anhydride thereof.
また、熱融着性樹脂層35の厚さとしては、特に制限されないが、車載用や定置用などの中型、大型の蓄電デバイスの密封性を高める観点から、下限については、好ましくは100μm以下、より好ましくは15~90μm程度、さらに好ましくは30~80μm程度が挙げられる。
Further, the thickness of the heat-fusible resin layer 35 is not particularly limited, but from the viewpoint of enhancing the sealing performance of a medium-sized or large-sized power storage device such as a vehicle-mounted or stationary device, the lower limit is preferably 100 μm or less. More preferably, the thickness is about 15 to 90 μm, and further preferably, about 30 to 80 μm.
熱融着性樹脂層は、示差走査熱量計で測定した場合に、150~165℃の範囲に融解ピークが観察されることが好ましい。車載用、定置用などの中型、大型の蓄電デバイスは、容量が大きい。また、キャパシタは、大電流で高出力の入出力が可能である。よって、これらの蓄電デバイスは、例えばモバイルバッテリーなどと比較すると、発熱しやすく、設置環境も高温になる場合がある。熱融着性樹脂層の融解ピークが前記の範囲に観察されることにより、これらの蓄電デバイスにおいても、熱融着性樹脂層による十分な密着性を担保し得る。
(4) In the heat-fusible resin layer, it is preferable that a melting peak is observed in a range of 150 to 165 ° C. when measured by a differential scanning calorimeter. Medium- and large-sized power storage devices, such as those for in-vehicle use and stationary use, have large capacities. Further, the capacitor is capable of inputting and outputting a large current and a high output. Therefore, these power storage devices tend to generate heat as compared with, for example, a mobile battery and the like, and may have a high installation environment. By observing the melting peak of the heat-fusible resin layer in the above range, it is possible to ensure sufficient adhesion of the heat-fusible resin layer even in these power storage devices.
<1-3.弁装置の構成>
図5は、弁装置200の平面図である。図5に示されるように、弁装置200は、弁機能部210と、シール取付け部220とを含んでいる。詳細については後述するが、シール取付け部220は、少なくともその一部が、包装材料110,120(図2)に挟まれて固定されている部分であり、ヒートシールされることで、シール取付け部220の外側の周面と包装材料110,120の最内層である熱融着性樹脂層35とが融着して接合された状態となっている。 <1-3. Configuration of Valve Device>
FIG. 5 is a plan view of thevalve device 200. FIG. As shown in FIG. 5, the valve device 200 includes a valve function unit 210 and a seal mounting unit 220. Although the details will be described later, at least a part of the seal mounting portion 220 is a portion that is fixed by being sandwiched between the packaging materials 110 and 120 (FIG. 2). The outer peripheral surface of 220 and the heat-fusible resin layer 35 which is the innermost layer of the packaging materials 110 and 120 are in a state of being fused and joined.
図5は、弁装置200の平面図である。図5に示されるように、弁装置200は、弁機能部210と、シール取付け部220とを含んでいる。詳細については後述するが、シール取付け部220は、少なくともその一部が、包装材料110,120(図2)に挟まれて固定されている部分であり、ヒートシールされることで、シール取付け部220の外側の周面と包装材料110,120の最内層である熱融着性樹脂層35とが融着して接合された状態となっている。 <1-3. Configuration of Valve Device>
FIG. 5 is a plan view of the
シール取付け部220において、矢印B方向の端部の角にはRが形成されている。すなわち、シール取付け部220において、弁機能部210側とは反対側の端部の平面視における角にはR(たとえば、R=0.2mm~2.0mm)が形成されている。なお、本開示においては、角が丸みを帯びていることを「Rが形成されている」として表現する。ここで「Rが形成されている」とは、構造的には、面取り加工がされたのと同様で、角が丸みを帯びた状態を意味しており、さらには「R」単独で、この角の丸みの半径を意味するものとして使用する。なお、弁装置200の製造工程において発生する尖った角に対して面取り加工を施して角に丸みをつける(Rを形成する)ことも可能であるが、弁装置200の筐体が樹脂成形品である場合には、最初から丸みを帯びた角を備えるように成形することで切削等の面取り加工なしでRを形成することも可能である。
RR is formed at the corner of the end of the seal mounting portion 220 in the direction of arrow B. That is, R (for example, R = 0.2 mm to 2.0 mm) is formed at the corner of the end of the seal mounting portion 220 opposite to the valve function portion 210 in plan view. In the present disclosure, rounded corners are expressed as “R is formed”. Here, “R is formed” means a state in which the corner is rounded similarly to the case where chamfering is performed, and further, “R” alone is Used to mean radius of rounded corners. It should be noted that the sharp corner generated in the manufacturing process of the valve device 200 may be chamfered to round the corner (form R), but the casing of the valve device 200 is formed of a resin molded product. In the case of R, it is also possible to form R without chamfering such as cutting by shaping from the beginning so as to have rounded corners.
図6は、図5のVI-VI断面図である。図6に示されるように、弁装置200において、弁機能部210及びシール取付け部220の各々の断面は正円形状であり、シール取付け部220の内部には通気路A1が形成されている。通気路A1の断面は、正円形状である。なお、図6には、正円形状の断面を有する場合を図示したが、断面形状は特に限定されず、楕円形状、四角形状などとしてもよい。
FIG. 6 is a sectional view taken along the line VI-VI in FIG. As shown in FIG. 6, in the valve device 200, the cross section of each of the valve function part 210 and the seal attachment part 220 is a perfect circle, and a ventilation path A1 is formed inside the seal attachment part 220. The cross section of the ventilation path A1 is a perfect circle. Although FIG. 6 shows a case where it has a perfect circular cross section, the cross sectional shape is not particularly limited and may be an elliptical shape, a square shape, or the like.
弁装置200において、弁装置付き包装体10の厚み方向(矢印UD方向)における弁機能部210の長さL2は、弁装置付き包装体10の厚み方向におけるシール取付け部220の長さL1よりも長い。弁装置付き包装体10の幅方向(矢印LR方向)における弁機能部210の長さL2は、弁装置付き包装体10の幅方向におけるシール取付け部220の長さL1よりも長い。すなわち、弁機能部210の断面の直径は、シール取付け部220の断面の直径よりも長い。その結果、弁機能部210とシール取付け部220との境界には段差が形成されている(図5)。
In the valve device 200, the length L2 of the valve function portion 210 in the thickness direction (the direction of the arrow UD) of the package 10 with a valve device is longer than the length L1 of the seal attachment portion 220 in the thickness direction of the package 10 with a valve device. long. The length L2 of the valve function part 210 in the width direction (the direction of the arrow LR) of the package 10 with the valve device is longer than the length L1 of the seal attachment portion 220 in the width direction of the package 10 with the valve device. That is, the cross-sectional diameter of the valve function section 210 is longer than the cross-sectional diameter of the seal mounting section 220. As a result, a step is formed at the boundary between the valve function part 210 and the seal mounting part 220 (FIG. 5).
図7は、図5のVII-VII断面図である。図7に示されるように、シール取付け部220の矢印B方向の端部には、R(たとえば、R=0.2mm~2.0mm)が形成されている。また、シール取付け部220の内部には、通気路A1が形成されている。通気路A1は、たとえば、収容体100内において発生したガスを弁機能部210へ誘導する。
FIG. 7 is a sectional view taken along the line VII-VII of FIG. As shown in FIG. 7, R (for example, R = 0.2 mm to 2.0 mm) is formed at the end of the seal mounting portion 220 in the direction of arrow B. Further, a ventilation path A1 is formed inside the seal mounting portion 220. The ventilation path A1 guides, for example, gas generated in the container 100 to the valve function unit 210.
弁機能部210の内部には、収容体100(図1)内において発生したガスを排出するように構成された弁機構が設けられている。具体的には、弁機能部210は、弁座212と、ボール214と、バネ216と、メンブレン218とを含んでいる。すなわち、弁機能部210には、ボールスプリング型の弁機構が設けられている。なお、弁機能部210内に設けられる弁機構は、ガスに起因して上昇した収容体100内の圧力を低減可能であれば特に制限されず、たとえば、ポペット型、ダックビル型、アンブレラ型、ダイヤフラム型等の弁機構であってもよい。また、弁座212は、例えばOリングであってもよいし、シール取付け部220のうちボール214と接触する部分を弁座212としてもよい。シール取付け部220の一部を弁座212とする場合には、シール取付け部220と弁座212とは一体となる。
A valve mechanism configured to discharge gas generated in the container 100 (FIG. 1) is provided inside the valve function unit 210. Specifically, the valve function unit 210 includes a valve seat 212, a ball 214, a spring 216, and a membrane 218. That is, the valve function section 210 is provided with a ball spring type valve mechanism. In addition, the valve mechanism provided in the valve function unit 210 is not particularly limited as long as the pressure in the container 100 that has risen due to the gas can be reduced. For example, a poppet type, a duckbill type, an umbrella type, a diaphragm It may be a valve mechanism such as a mold. Further, the valve seat 212 may be, for example, an O-ring, or a portion of the seal attachment portion 220 that contacts the ball 214 may be the valve seat 212. When a part of the seal mounting part 220 is used as the valve seat 212, the seal mounting part 220 and the valve seat 212 are integrated.
弁座は、フッ素ゴムなどの弾性体、ステンレスなどの金属、樹脂等により構成されている。弁座の表面は、PTFEなどによってコートされていてもよい。また、ボール214は、例えばフッ素ゴムなどの弾性体によって構成されていてもよい。ボール214は、ステンレスなどの金属や、樹脂で構成されてもよい。バネ216は、たとえば、ステンレスによって構成されている。メンブレン218は、たとえば、10-2~100μm程度のポアー直径(pore diameter)を有し、電解液を漏らさず、ガスのみを透過(選択透過)するようなPTFEメンブレンによって構成されている。なお、PTFEとは、ポリテトラフルオロエチレン(polytetrafluoroethylene)の意である。また、PTFEメンブレンは柔らかい材質の為、強度が不足する場合はポリプロピレンやポリエステルなどのメッシュや不織布と一体成型して補強したものを用いることもできる。なお、例えば図7などには、メンブレン218が弁機能部210に設けられている図を示しているが、弁機能部210への液体(例えば電解液)の侵入を抑制する観点からは、メンブレン218は、シール取付け部220(例えば通気路A1)に設けられていることが好ましい。弁機能部210に電解液などが付着すると、電解液の結晶成分などによって、弁機能が阻害される場合がある。また、ボールの形状は、例えば球状が挙げられるが、ボールと弁座が接触する部分が対応した形状となればよいことから、必ずしも球状である必要はなく、たとえば、半球状であってもよいし、長球状であってもよいし、扁球状であってもよい。また、たとえば、ボールが半球状である場合に、平らな面から柱状の部材が延びていてもよい。
The valve seat is made of an elastic material such as fluorine rubber, a metal such as stainless steel, a resin, or the like. The surface of the valve seat may be coated with PTFE or the like. Further, the ball 214 may be made of an elastic material such as fluoro rubber. The ball 214 may be made of metal such as stainless steel or resin. The spring 216 is made of, for example, stainless steel. Membrane 218, for example, 10 -2 to have 10 0 [mu] m approximately pore diameter (pore For diameter), without leaking the electrolyte is composed of a PTFE membrane as the only gas permeable (permselective). In addition, PTFE means polytetrafluoroethylene (polytetrafluoroethylene). In addition, since the PTFE membrane is a soft material, if the strength is insufficient, a PTFE membrane that is integrally molded with a mesh or nonwoven fabric of polypropylene or polyester and reinforced can be used. Note that, for example, FIG. 7 and the like show a diagram in which the membrane 218 is provided in the valve function unit 210. However, from the viewpoint of suppressing intrusion of a liquid (for example, an electrolytic solution) into the valve function unit 210, the membrane 218 is used. 218 is preferably provided in the seal attachment part 220 (for example, the ventilation path A1). When an electrolytic solution or the like adheres to the valve function unit 210, the valve function may be impaired by a crystal component of the electrolytic solution or the like. Further, the shape of the ball may be, for example, spherical, but it is not always necessary to be spherical, since the portion where the ball and the valve seat come into contact may be a corresponding shape, and may be, for example, hemispherical. However, the shape may be oblong or oblate. Further, for example, when the ball is hemispherical, a columnar member may extend from a flat surface.
弁装置200が収容体100に取り付けられた状態で、収容体100内の圧力が所定圧力に達すると、通気路A1から誘導されたガスがボール214を矢印F方向に押圧する。ボール214が押圧されバネ216が縮むと、収容体100内のガスは、ボール214と弁座212との間に形成された隙間を通り、メンブレン218を透過して、排気口O1から収容体100の外部に排出される。なお、図33に示すように、メンブレン218は、弁座212よりも下の領域(例えば、シール取付け部220)に設けることも好ましい。
When the pressure in the container 100 reaches a predetermined pressure in a state where the valve device 200 is attached to the container 100, the gas guided from the ventilation path A1 presses the ball 214 in the direction of arrow F. When the ball 214 is pressed and the spring 216 contracts, the gas in the container 100 passes through a gap formed between the ball 214 and the valve seat 212, passes through the membrane 218, and passes through the exhaust port O 1 through the container 100. Is discharged to the outside. In addition, as shown in FIG. 33, it is preferable that the membrane 218 is provided in a region below the valve seat 212 (for example, the seal mounting portion 220).
<1-4.弁装置の取付け状態>
図8は、図1のVIII-VIII断面図であり、弁装置200の取付け状態を説明するための図である。図8に示されるように、弁装置200の弁機能部210は、周縁接合部130の端縁よりも外側に位置している。一方、弁装置200のシール取付け部220の一部分は、周縁接合部130において、包装材料110の熱融着性樹脂層35と包装材料120の熱融着性樹脂層35との間に挟まれて、シール取付け部220の外側の周面と包装材料110,120の最内層である熱融着性樹脂層35とが融着して接合された状態となっている。なお、図8では、弁装置200が包装材料110、120の最内層である熱融着性樹脂層35と融着して接合された状態であることを説明するため、便宜的に、熱融着性樹脂層35を周縁接合部130付近のみ部分的に図示しているが、熱融着性樹脂層35は包装材料110,120の全面に備えられている。 <1-4. Mounting condition of valve device>
FIG. 8 is a sectional view taken along the line VIII-VIII of FIG. 1, and is a view for explaining an attached state of thevalve device 200. As shown in FIG. 8, the valve function unit 210 of the valve device 200 is located outside the edge of the peripheral joint 130. On the other hand, a part of the seal mounting portion 220 of the valve device 200 is sandwiched between the heat-fusible resin layer 35 of the packaging material 110 and the heat-fusible resin layer 35 of the packaging material 120 at the peripheral joining portion 130. In this state, the outer peripheral surface of the seal mounting portion 220 and the heat-fusible resin layer 35 as the innermost layer of the packaging materials 110 and 120 are fused and joined. In FIG. 8, the valve device 200 is described as being in a state of being fused and joined to the heat-fusible resin layer 35 which is the innermost layer of the packaging materials 110 and 120. Although the adhesive resin layer 35 is partially illustrated only in the vicinity of the peripheral joining portion 130, the heat-fusible resin layer 35 is provided on the entire surfaces of the packaging materials 110 and 120.
図8は、図1のVIII-VIII断面図であり、弁装置200の取付け状態を説明するための図である。図8に示されるように、弁装置200の弁機能部210は、周縁接合部130の端縁よりも外側に位置している。一方、弁装置200のシール取付け部220の一部分は、周縁接合部130において、包装材料110の熱融着性樹脂層35と包装材料120の熱融着性樹脂層35との間に挟まれて、シール取付け部220の外側の周面と包装材料110,120の最内層である熱融着性樹脂層35とが融着して接合された状態となっている。なお、図8では、弁装置200が包装材料110、120の最内層である熱融着性樹脂層35と融着して接合された状態であることを説明するため、便宜的に、熱融着性樹脂層35を周縁接合部130付近のみ部分的に図示しているが、熱融着性樹脂層35は包装材料110,120の全面に備えられている。 <1-4. Mounting condition of valve device>
FIG. 8 is a sectional view taken along the line VIII-VIII of FIG. 1, and is a view for explaining an attached state of the
本実施の形態1に従う弁装置付き包装体10において、シール取付け部220が周縁接合部130において熱融着性樹脂層35に挟まれ、弁機能部210が周縁接合部130において熱融着性樹脂層35に挟まれていない理由について次に説明する。
In package 10 with a valve device according to the first embodiment, seal attachment portion 220 is sandwiched between heat-fusible resin layers 35 at peripheral joining portion 130, and valve function portion 210 is heat-fusible resin at peripheral joining portion 130. The reason for not being sandwiched by the layer 35 will be described below.
仮に、弁機能部210が周縁接合部130において熱融着性樹脂層35に挟まれるとする。この場合には、包装材料110,120の周縁において熱融着性樹脂層35を互いに融着する時(ヒートシールする時)に、加えられる熱及び圧力によって弁機能部210内の弁機構が故障する可能性がある。
{Suppose that the valve function part 210 is sandwiched between the heat-fusible resin layers 35 at the peripheral joint part 130. In this case, when the heat-fusible resin layers 35 are fused (heat-sealed) to each other at the peripheral edges of the packaging materials 110 and 120, the valve mechanism in the valve function unit 210 fails due to the applied heat and pressure. there's a possibility that.
本実施の形態1に従う弁装置付き包装体10において、周縁接合部130で熱融着性樹脂層35に挟まれているのはシール取付け部220であり、弁機能部210は熱融着性樹脂層35に挟まれていない。したがって、弁装置付き包装体10においては、ヒートシール時に弁機能部210に大きい圧力及び熱が加えられない。すなわち、弁装置付き包装体10においては、弁機能部210を熱融着性樹脂層35によって挟まないことによって、ヒートシール時に加えられる圧力及び熱に起因した弁機構の故障が抑制されている。
In the package 10 with the valve device according to the first embodiment, the seal attachment portion 220 is sandwiched between the heat-fusible resin layers 35 at the peripheral joining portion 130, and the valve function portion 210 is formed of the heat-fusible resin. It is not sandwiched between layers 35. Therefore, in the package 10 with a valve device, large pressure and heat are not applied to the valve function part 210 at the time of heat sealing. That is, in the package 10 with the valve device, the failure of the valve mechanism due to the pressure and heat applied at the time of heat sealing is suppressed by not sandwiching the valve function part 210 between the heat-fusible resin layers 35.
また、本実施の形態1に従う弁装置付き包装体10においては、上述のように、シール取付け部220の断面の直径が弁機能部210の断面の直径よりも短い。したがって、シール取付け部220の断面の直径が弁機能部210の断面の直径以上である場合と比較して、周縁接合部130のうちシール取付け部220が挟まれている部分における弁装置付き包装体の厚み方向の長さL4と、周縁接合部130のうちシール取付け部220が挟まれていない部分における弁装置付き包装体の厚み方向の長さL3との差が小さい。この差が大きいほど、シール取付け部220の外側の周面が包装材料110,120の最内層である熱融着性樹脂層35と融着して隙間なく接合された状態とするために、ヒートシールの圧力を大きくする必要が生じる。その結果、ヒートシールのために収容体100の周縁に加えられる圧力が大きくなる。該圧力が大きくなると、特にシール取付け部220が挟まれている位置において、さらにはタブフィルム310とタブ300が挟まれている位置において、熱融着性樹脂層35が薄くなる可能性がある。熱融着性樹脂層35が薄くなると、弁装置付き包装体10において絶縁破壊が生じる可能性がある。
In the package 10 with a valve device according to the first embodiment, as described above, the cross-sectional diameter of the seal attachment portion 220 is shorter than the cross-sectional diameter of the valve function portion 210. Therefore, as compared with the case where the cross-sectional diameter of the seal mounting portion 220 is equal to or greater than the cross-sectional diameter of the valve function portion 210, the package with the valve device in the portion of the peripheral joining portion 130 where the seal mounting portion 220 is sandwiched. The difference between the length L4 in the thickness direction of the package and the length L3 in the thickness direction of the package with the valve device in the portion of the peripheral joining portion 130 where the seal mounting portion 220 is not sandwiched is small. The larger the difference, the more the outer peripheral surface of the seal attachment portion 220 is fused to the heat-fusible resin layer 35, which is the innermost layer of the packaging materials 110 and 120, so that the outer peripheral surface is joined without gaps. It is necessary to increase the pressure of the seal. As a result, the pressure applied to the periphery of the container 100 for heat sealing increases. When the pressure is increased, the heat-fusible resin layer 35 may be thinner particularly at the position where the seal attachment portion 220 is sandwiched, and further at the position where the tab film 310 and the tab 300 are sandwiched. When the heat-fusible resin layer 35 becomes thin, dielectric breakdown may occur in the package 10 with a valve device.
本実施の形態1に従う弁装置付き包装体10においては、上述のように、長さL4と長さL3との差が小さい。したがって、ヒートシール機によって収容体100の周縁を挟んだ時に、収容体100の周縁全体において熱融着性樹脂層35に適切に圧力及び熱が加えられる。その結果、弁装置付き包装体10によれば、弁装置付き包装体10において絶縁破壊が生じる可能性を低減しつつ、対向する熱融着性樹脂層35を適切に融着させ、シール取付け部220を収容体100に強固に固定することができる。
包装 In package 10 with a valve device according to the first embodiment, as described above, the difference between length L4 and length L3 is small. Therefore, when the periphery of the container 100 is sandwiched by the heat sealing machine, pressure and heat are appropriately applied to the heat-fusible resin layer 35 over the entire periphery of the container 100. As a result, according to the package 10 with a valve device, the opposing heat-fusible resin layer 35 is appropriately fused while reducing the possibility of dielectric breakdown in the package 10 with a valve device, and 220 can be firmly fixed to the container 100.
また、本実施の形態1に従う弁装置付き包装体10においては、シール取付け部220の矢印B方向の端部が、フランジ部114よりも空間S1内に突出している。したがって、弁装置付き包装体10の使用状況によっては、シール取付け部220の矢印B方向の端部が内容物400に接触する可能性がある。本実施の形態1に従う弁装置付き包装体10においては、上述のように、シール取付け部220の矢印B方向の端部にRが形成されている(図5)。したがって、仮にシール取付け部220の端部が内容物400に接触したとしても、該端部が内容物400を傷つける可能性は低い。また、弁装置付き包装体10の使用状況によっては、シール取付け部220の矢印B方向の端部が包装材料120の熱融着性樹脂層35に接触する可能性がある。本実施の形態1に従う弁装置付き包装体10においては、上述のように、シール取付け部220の矢印B方向の端部にRが形成されているため、仮にシール取付け部220の端部が包装材料120の熱融着性樹脂層35に接触したとしても、該端部が熱融着性樹脂層35を傷つける可能性は低い。
In the package 10 with the valve device according to the first embodiment, the end of the seal mounting portion 220 in the direction of arrow B projects into the space S1 beyond the flange 114. Therefore, there is a possibility that the end of the seal mounting portion 220 in the direction of the arrow B may come into contact with the contents 400 depending on the use state of the package 10 with the valve device. In package 10 with a valve device according to the first embodiment, R is formed at the end of seal mounting portion 220 in the direction of arrow B as described above (FIG. 5). Therefore, even if the end of the seal attachment portion 220 comes into contact with the content 400, the possibility that the end damages the content 400 is low. Further, depending on the use condition of the package 10 with the valve device, the end of the seal mounting portion 220 in the direction of arrow B may come into contact with the heat-fusible resin layer 35 of the packaging material 120. In package 10 with a valve device according to the first embodiment, as described above, R is formed at the end of seal mounting portion 220 in the direction of arrow B, so that the end of seal mounting portion 220 is temporarily wrapped. Even if the material 120 comes into contact with the heat-fusible resin layer 35, it is unlikely that the end portion damages the heat-fusible resin layer 35.
<1-5.製造方法>
図9は、弁装置付き包装体10の製造手順を示すフローチャートである。たとえば、弁装置付き包装体10は、製造装置によって製造される。 <1-5. Manufacturing method>
FIG. 9 is a flowchart illustrating a manufacturing procedure of the package 10 with the valve device. For example, the package 10 with a valve device is manufactured by a manufacturing device.
図9は、弁装置付き包装体10の製造手順を示すフローチャートである。たとえば、弁装置付き包装体10は、製造装置によって製造される。 <1-5. Manufacturing method>
FIG. 9 is a flowchart illustrating a manufacturing procedure of the package 10 with the valve device. For example, the package 10 with a valve device is manufactured by a manufacturing device.
図9を参照して、製造装置は、収容体100内に各部品を載置する(ステップS100)。たとえば、製造装置は、タブフィルム310付きタブ300が溶接によって電気的に接続された内容物(蓄電デバイス素子)400(蓄電デバイス素子)を包装材料110内の空間S1に載置することによって、包装材料110のフランジ部114の上にタブフィルム310付きタブ300が載置された状態とし、次に、包装材料110のフランジ部114の上に弁装置200を載置する。なお、包装材料110内の空間S1に内容物400(蓄電デバイス素子)を載置し、その次に、タブフィルム310付きタブ300を内容物400(蓄電デバイス素子)に溶接して電気的に接続すると共に包装材料110のフランジ部114の上にタブフィルム310付きタブ300が載置された状態とし、次に、包装材料110のフランジ部114の上に弁装置200を載置することも可能である。そして、製造装置は、包装材料110上に包装材料120を載置する。
を Referring to FIG. 9, the manufacturing apparatus places each component in container 100 (step S100). For example, the manufacturing apparatus mounts the contents (power storage device elements) 400 (power storage device elements) to which the tabs 300 with the tab films 310 are electrically connected by welding in the space S1 in the packaging material 110 to perform packaging. The tab 300 with the tab film 310 is placed on the flange 114 of the material 110, and then the valve device 200 is placed on the flange 114 of the packaging material 110. The contents 400 (power storage device elements) are placed in the space S1 in the packaging material 110, and then the tab 300 with the tab film 310 is welded to the contents 400 (power storage device elements) to be electrically connected. At the same time, the tab 300 with the tab film 310 may be placed on the flange 114 of the packaging material 110, and then the valve device 200 may be placed on the flange 114 of the packaging material 110. is there. Then, the manufacturing device places the packaging material 120 on the packaging material 110.
図10は、包装材料110のフランジ部114と包装材料120との間に弁装置200を載置する動作を示す図である。図10に示されるように、弁機能部210とシール取付け部220との間には段差が形成されている。したがって、シール取付け部220を包装材料110,120で挟む時に、仮に弁装置200を収容体100側に押し込み過ぎたとしても段差部分が包装材料110,120の端部に引っ掛かる。したがって、弁装置付き包装体10によれば、弁装置付き包装体10の製造過程において、弁機能部210が誤って包装材料110,120(熱融着性樹脂層35)に挟まれる事態を抑制することができる。なお、図31に示されるように、弁装置200のシール取付け部220の先端は、包装材料110,120で挟まれる位置に配置してもよい。
FIG. 10 is a view showing an operation of placing the valve device 200 between the flange portion 114 of the packaging material 110 and the packaging material 120. As shown in FIG. 10, a step is formed between the valve function part 210 and the seal attachment part 220. Therefore, when the seal mounting portion 220 is sandwiched between the packaging materials 110 and 120, even if the valve device 200 is pushed too far into the container 100, the step portion is caught by the ends of the packaging materials 110 and 120. Therefore, according to the package 10 with a valve device, the situation where the valve function part 210 is erroneously sandwiched between the packaging materials 110 and 120 (the heat-fusible resin layer 35) in the manufacturing process of the package 10 with the valve device is suppressed. can do. In addition, as shown in FIG. 31, the tip of the seal mounting portion 220 of the valve device 200 may be arranged at a position sandwiched between the packaging materials 110 and 120.
各部品の載置が完了すると、製造装置は、収容体100の周縁をヒートシールする(ステップS110)。すなわち、製造装置は、収容体100の周縁を挟み、収容体100の周縁に圧力及び熱を加える。これにより、収容体100の周縁において、対向する熱融着性樹脂層35が互いに融着し、周縁接合部130が形成される。そして、内容物400が収容体100内に密封され、弁装置200が周縁接合部130に融着して固定され、さらに、タブ300もタブフィルム310を介して周縁接合部130に融着して固定され、弁装置付き包装体10が完成する。なお、ヒートシール工程においては、収容体100の内部の脱気を行うことで、収容体100の内部に不要なガスが含まれない状態としている。具体的には、全周を接合せずに、一部に未接合状態の周縁を残しておき、この未接合状態の周縁から脱気して、最後に未接合状態の周縁に圧力及び熱を加えて全周の周縁接合部130を完成させるものであり、さらには、電解液を必要とする弁装置付き包装体の場合には、全周を接合せずに、一部に未接合状態の周縁を残しておき、この未接合状態の周縁から電解液を注入して、脱気して、最後に未接合状態の周縁に圧力及び熱を加えて全周の周縁接合部130を完成することもある。
(4) When the mounting of each component is completed, the manufacturing apparatus heat seals the periphery of the container 100 (Step S110). That is, the manufacturing apparatus applies pressure and heat to the periphery of the container 100 with the periphery of the container 100 interposed therebetween. As a result, the heat-fusible resin layers 35 facing each other are fused to each other at the peripheral edge of the container 100, and the peripheral joint portion 130 is formed. Then, the contents 400 are sealed in the container 100, the valve device 200 is fused and fixed to the peripheral joint 130, and the tab 300 is also fused to the peripheral joint 130 via the tab film 310. It is fixed and the package 10 with the valve device is completed. In the heat sealing step, unnecessary gas is not contained in the container 100 by degassing the inside of the container 100. More specifically, the entire periphery is not joined, and a part of the unjoined edge is left, and degassing is performed from the unjoined edge. Finally, pressure and heat are applied to the unjoined edge. In addition, it completes the entire periphery joining portion 130, and further, in the case of a package with a valve device that requires an electrolytic solution, the entire periphery is not joined and a part of the unjoined state is not joined. The peripheral edge is left, an electrolyte is injected from the peripheral edge in the unjoined state, degassed, and finally, pressure and heat are applied to the peripheral edge in the unjoined state to complete the entire peripheral edge joint portion 130. There is also.
また、製造装置のシールバーのうち収容体100の周縁を挟む面の形状を、シール取付け部220の外形に沿う形状とすることも有効である。この場合には、シール取付け部220が挟まれた位置における熱融着性樹脂層35同士の接着がより強固になる。この場合であっても、包装材料110,120の変形や負荷を低減するために、後述の実施の形態2のように、シール取付け部220の形状を扁平形状とすることが有効である。
It is also effective that the shape of the surface of the seal bar of the manufacturing apparatus that sandwiches the periphery of the container 100 conforms to the outer shape of the seal mounting portion 220. In this case, the adhesion between the heat-fusible resin layers 35 at the position where the seal attachment portion 220 is sandwiched becomes stronger. Even in this case, in order to reduce the deformation and the load of the packaging materials 110 and 120, it is effective to make the shape of the seal attachment portion 220 flat as in Embodiment 2 described later.
<1-6.特徴>
以上のように、本実施の形態1に従う弁装置付き包装体10においては、弁装置200のシール取付け部220の少なくとも一部が周縁接合部130において熱融着性樹脂層35に挟まれており、弁装置200の弁機能部210が周縁接合部130において熱融着性樹脂層35に挟まれていない。したがって、弁装置付き包装体10においては、対向する熱融着性樹脂層35の融着時にシール取付け部220と比較して弁機能部210に大きい圧力及び熱が加えられない。その結果、弁装置付き包装体10によれば、対向する熱融着性樹脂層35の融着時に加えられる圧力及び熱に起因した弁機能部210内の弁機構の故障を抑制することができる。 <1-6. Features>
As described above, in package 10 with a valve device according to the first embodiment, at least a part ofseal mounting portion 220 of valve device 200 is sandwiched between heat-fusible resin layers 35 at peripheral joining portion 130. The valve function part 210 of the valve device 200 is not sandwiched between the heat-fusible resin layers 35 at the peripheral joint part 130. Therefore, in the package 10 with a valve device, a large pressure and heat are not applied to the valve function part 210 as compared with the seal attachment part 220 when the opposing heat-fusible resin layer 35 is fused. As a result, according to the package 10 with a valve device, it is possible to suppress the failure of the valve mechanism in the valve function unit 210 due to the pressure and heat applied when the opposing heat-fusible resin layer 35 is fused. .
以上のように、本実施の形態1に従う弁装置付き包装体10においては、弁装置200のシール取付け部220の少なくとも一部が周縁接合部130において熱融着性樹脂層35に挟まれており、弁装置200の弁機能部210が周縁接合部130において熱融着性樹脂層35に挟まれていない。したがって、弁装置付き包装体10においては、対向する熱融着性樹脂層35の融着時にシール取付け部220と比較して弁機能部210に大きい圧力及び熱が加えられない。その結果、弁装置付き包装体10によれば、対向する熱融着性樹脂層35の融着時に加えられる圧力及び熱に起因した弁機能部210内の弁機構の故障を抑制することができる。 <1-6. Features>
As described above, in package 10 with a valve device according to the first embodiment, at least a part of
なお、内容物400は、本開示の「弁装置付き包装体素子」の一例であり、収容体100は、本開示の「収容体」の一例であり、弁装置200は、本開示の「弁装置」の一例である。基材層31は、本開示の「基材層」の一例であり、バリア層33は、本開示の「バリア層」の一例であり、熱融着性樹脂層35は、本開示の「熱融着性樹脂層」の一例である。周縁接合部130は、本開示の「周縁接合部」の一例である。弁機能部210は、本開示の「第1部分」の一例であり、シール取付け部220は、本開示の「第2部分」の一例である。通気路A1は、本開示の「通気路」の一例である。
The content 400 is an example of the “packaging element with a valve device” of the present disclosure, the container 100 is an example of the “container” of the present disclosure, and the valve device 200 is a “valve element” of the present disclosure. Device ”. The base layer 31 is an example of a “base layer” of the present disclosure, the barrier layer 33 is an example of a “barrier layer” of the present disclosure, and the heat-fusible resin layer 35 is This is an example of the “fusible resin layer”. The peripheral joint 130 is an example of the “peripheral joint” of the present disclosure. The valve function part 210 is an example of the “first part” of the present disclosure, and the seal attaching part 220 is an example of the “second part” of the present disclosure. The air passage A1 is an example of the “air passage” of the present disclosure.
また、収容体100内の空間S1に内容物400が収容されていることを理解し易く説明するため、便宜的に、収容体100の空間S1に対して内容物400を小さいサイズで図示しているが、製造工程において空間S1に内容物400を載置するため、空間S1は内容物400よりも若干大きいが、製造工程において前述したように脱気するので、最終的な弁装置付き包装体10の状態では、空間S1は脱気に伴い若干縮小して内容物400と略同じサイズとなり、ほとんど隙間なく空間S1に内容物400が収容された状態となっている。
Further, in order to easily understand that the contents 400 are stored in the space S1 in the container 100, the contents 400 are illustrated in a small size with respect to the space S1 of the container 100 for convenience. However, since the content 400 is placed in the space S1 in the manufacturing process, the space S1 is slightly larger than the content 400, but is degassed as described above in the manufacturing process. In the state of 10, the space S1 is slightly reduced with deaeration and becomes substantially the same size as the contents 400, and the contents 400 are stored in the space S1 with almost no gap.
[2.実施の形態2]
本実施の形態2においては、上記実施の形態1と比較して、弁装置の構成が異なる。他の構成は、基本的に実施の形態1と同様である。ここでは、実施の形態1と異なる部分について説明する。 [2. Embodiment 2]
The second embodiment differs from the first embodiment in the configuration of the valve device. Other configurations are basically the same as those of the first embodiment. Here, portions different from the first embodiment will be described.
本実施の形態2においては、上記実施の形態1と比較して、弁装置の構成が異なる。他の構成は、基本的に実施の形態1と同様である。ここでは、実施の形態1と異なる部分について説明する。 [2. Embodiment 2]
The second embodiment differs from the first embodiment in the configuration of the valve device. Other configurations are basically the same as those of the first embodiment. Here, portions different from the first embodiment will be described.
図11は、本実施の形態2に従う弁装置付き包装体に搭載されている弁装置200Aの平面図である。図11に示されるように、弁装置200Aは、弁機能部210Aと、シール取付け部220Aとを含んでいる。シール取付け部220Aは、少なくともその一部が、包装材料110,120に挟まれて、ヒートシールされる部分である。シール取付け部220Aは、実施の形態1と比較して、断面形状が異なる。弁機能部210Aは、基本的には実施の形態1と同様であるが、シール取付け部220A内に形成されている通気路A6(図12)の形状の違いに応じて、筐体及び弁機構の形状が一部変更されている。
FIG. 11 is a plan view of valve device 200A mounted on the package with a valve device according to the second embodiment. As shown in FIG. 11, the valve device 200A includes a valve function part 210A and a seal mounting part 220A. At least a part of the seal attachment portion 220A is a portion that is heat-sealed by being sandwiched between the packaging materials 110 and 120. The seal mounting portion 220A has a different cross-sectional shape as compared with the first embodiment. The valve function part 210A is basically the same as that of the first embodiment, but according to the difference in the shape of the ventilation path A6 (FIG. 12) formed in the seal attachment part 220A, the housing and the valve mechanism. The shape of has been partially changed.
図12は、図11のXII-XII断面図である。図12に示されるように、シール取付け部220Aの断面において、弁装置付き包装体の幅方向(矢印LR方向)の長さL5は、弁装置付き包装体の厚み方向(矢印UD方向)の長さL6よりも長い。より具体的には、シール取付け部220Aの断面形状は、楕円形状である。
FIG. 12 is a cross-sectional view taken along the line XII-XII of FIG. As shown in FIG. 12, in the cross section of the seal mounting portion 220A, the length L5 in the width direction (the direction of the arrow LR) of the package with the valve device is the length in the thickness direction (the direction of the arrow UD) of the package with the valve device. It is longer than L6. More specifically, the cross-sectional shape of the seal mounting portion 220A is an elliptical shape.
シール取付け部220Aの内部には通気路A6が形成されている。通気路A6においても、弁装置付き包装体の幅方向の長さは、弁装置付き包装体の厚み方向の長さよりも長い。より具体的には、通気路A6の断面形状は、楕円形状である。
通 気 A ventilation passage A6 is formed inside the seal mounting portion 220A. Also in the ventilation path A6, the length in the width direction of the package with the valve device is longer than the length in the thickness direction of the package with the valve device. More specifically, the cross-sectional shape of the ventilation path A6 is an elliptical shape.
このように、本実施の形態2においては、シール取付け部220Aの断面において、弁装置付き包装体の幅方向の長さL5が、弁装置付き包装体の厚み方向の長さL6よりも長い。すなわち、シール取付け部の断面形状が正円(面積は同一)である場合と比較して、弁装置付き包装体の厚み方向におけるシール取付け部220Aの長さが短い。この弁装置付き包装体においては、周縁接合部130のうちシール取付け部220Aが挟まれている部分における弁装置付き包装体の厚み方向の長さと、周縁接合部130のうちシール取付け部220Aが挟まれていない部分における弁装置付き包装体の厚み方向の長さとの差がより小さくなっている。したがって、この弁装置付き包装体によれば、収容体100の周縁全体において熱融着性樹脂層35に適切に圧力及び熱を加えることができ、対向する熱融着性樹脂層35を適切に融着させることができるため、弁装置200Aのシール取付け部220Aを収容体100に強固に固定することができる。
As described above, in the second embodiment, in the cross section of the seal mounting portion 220A, the length L5 in the width direction of the package with the valve device is longer than the length L6 in the thickness direction of the package with the valve device. That is, the length of the seal mounting portion 220A in the thickness direction of the package with the valve device is shorter than the case where the cross-sectional shape of the seal mounting portion is a perfect circle (the same area). In this package with the valve device, the length in the thickness direction of the package with the valve device in the portion where the seal mounting portion 220A is sandwiched in the peripheral joining portion 130, and the seal mounting portion 220A in the peripheral joining portion 130 is sandwiched. The difference from the length in the thickness direction of the package body with the valve device in the portion not provided is smaller. Therefore, according to this package with a valve device, pressure and heat can be appropriately applied to the heat-fusible resin layer 35 over the entire periphery of the container 100, and the opposing heat-fusible resin layer 35 can be appropriately applied. Since fusion can be performed, the seal mounting portion 220A of the valve device 200A can be firmly fixed to the container 100.
なお、弁装置200Aは、本開示の「弁装置」の一例であり、弁機能部210Aは、本開示の「第1部分」の一例であり、シール取付け部220Aは、本開示の「第2部分」の一例である。通気路A6は、本開示の「通気路」の一例である。
The valve device 200A is an example of the “valve device” of the present disclosure, the valve function unit 210A is an example of the “first portion” of the present disclosure, and the seal mounting unit 220A is the “second device” of the present disclosure. "Part". The air passage A6 is an example of the “air passage” of the present disclosure.
[3.実施の形態3]
実施の形態3においては、上記実施の形態1と比較して、弁装置の構成が異なる。他の構成は、基本的に実施の形態1と同様である。ここでは、実施の形態1と異なる部分について説明する。 [3. Third Embodiment]
Embodiment 3 differs fromEmbodiment 1 in the configuration of the valve device. Other configurations are basically the same as those of the first embodiment. Here, portions different from the first embodiment will be described.
実施の形態3においては、上記実施の形態1と比較して、弁装置の構成が異なる。他の構成は、基本的に実施の形態1と同様である。ここでは、実施の形態1と異なる部分について説明する。 [3. Third Embodiment]
Embodiment 3 differs from
図13は、本実施の形態3に従う弁装置付き包装体に搭載されている弁装置200Bの平面図である。図13に示されるように、弁装置200Bは、弁機能部210Bと、シール取付け部220Bとを含んでいる。シール取付け部220Bは、少なくともその一部が、包装材料110,120に挟まれて、ヒートシールされる部分である。シール取付け部220Bは、実施の形態1と比較して、断面形状が異なる。弁機能部210Bは、基本的には実施の形態1と同様であるが、シール取付け部220B内に形成されている通気路A7(図14)の形状の違いに応じて、筐体及び弁機構の形状が一部変更されている。
FIG. 13 is a plan view of valve device 200B mounted on the package with a valve device according to the third embodiment. As shown in FIG. 13, the valve device 200B includes a valve function unit 210B and a seal mounting unit 220B. At least a part of the seal mounting portion 220B is a portion that is heat-sealed by being sandwiched between the packaging materials 110 and 120. The cross-sectional shape of the seal mounting portion 220B is different from that of the first embodiment. The valve function part 210B is basically the same as that of the first embodiment, but according to the difference in the shape of the ventilation path A7 (FIG. 14) formed in the seal attachment part 220B, the housing and the valve mechanism. The shape of has been partially changed.
図14は、図13のXIV-XIV断面図である。図14に示されるように、シール取付け部220Bにおいては、弁装置付き包装体の幅方向(矢印LR方向)の両端部に翼状延端部40,41が形成されている。翼状延端部40,41の各々は、弁装置付き包装体の幅方向の端部に近づくほど薄くなる形状を有している。また、別の観点からは、翼状延端部40,41の各々は、シール取付け部220Bの他の部分(円形部分)と比較して、矢印LR方向において、弁装置付き包装体の厚み方向の長さの変化が緩やかな部分ともいえる。
FIG. 14 is a cross-sectional view taken along the line XIV-XIV of FIG. As shown in FIG. 14, in the seal mounting portion 220B, wing-shaped extending ends 40 and 41 are formed at both ends in the width direction (the direction of the arrow LR) of the package with the valve device. Each of the wing-shaped extending ends 40 and 41 has a shape that becomes thinner as approaching the widthwise end of the package with the valve device. In addition, from another viewpoint, each of the wing-shaped extending ends 40 and 41 has a thickness direction of the package with the valve device in the direction of the arrow LR as compared with the other part (circular part) of the seal attachment part 220B. It can be said that the length changes gradually.
本実施の形態3に従う弁装置付き包装体においては、実施の形態1(シール取付け部220Bに翼状延端部40,41が設けられていない場合)と比較して、周縁接合部130のうちシール取付け部220Bが挟まれていない部分から周縁接合部130のうちシール取付け部220Bが挟まれている部分へ移行する位置における弁装置付き包装体の厚み方向の変化が滑らかである。したがって、この弁装置付き包装体によれば、シール取付け部220Bが熱融着性樹脂層35によって挟まれている位置とシール取付け部220Bが熱融着性樹脂層35に挟まれていない位置との境界において包装材料110,120に無理な力が加わらないため、弁装置200Bのシール取付け部220Bを収容体100に強固に固定することができる。
In the package with a valve device according to the third embodiment, compared with the first embodiment (when the wing-shaped extending ends 40 and 41 are not provided in the seal attachment portion 220B), the seal of the peripheral joint portion 130 is different. The change in the thickness direction of the package with the valve device at the position where the portion where the attachment portion 220B is not sandwiched and the portion where the seal attachment portion 220B is sandwiched among the peripheral joining portions 130 is smooth. Therefore, according to the package with the valve device, the position where the seal mounting portion 220B is sandwiched by the heat-fusible resin layer 35 and the position where the seal mounting portion 220B is not sandwiched by the heat-fusible resin layer 35 Since no excessive force is applied to the packaging materials 110 and 120 at the boundary of, the seal mounting portion 220B of the valve device 200B can be firmly fixed to the container 100.
なお、弁装置200Bは、本開示の「弁装置」の一例であり、弁機能部210Bは、本開示の「第1部分」の一例であり、シール取付け部220Bは、本開示の「第2部分」の一例である。翼状延端部40,41は、本開示の「翼状延端部」の一例である。通気路A7は、本開示の「通気路」の一例である。
The valve device 200B is an example of the “valve device” of the present disclosure, the valve function unit 210B is an example of the “first part” of the present disclosure, and the seal mounting unit 220B is the “second device” of the present disclosure. "Part". The wing-shaped extended ends 40 and 41 are examples of the “wing-shaped extended end” of the present disclosure. The air passage A7 is an example of the “air passage” of the present disclosure.
[4.実施の形態4]
本実施の形態4においては、上記実施の形態1と比較して、弁装置の構成が異なる。他の構成は、基本的に実施の形態1と同様である。ここでは、実施の形態1と異なる部分について説明する。 [4. Embodiment 4]
The fourth embodiment differs from the first embodiment in the configuration of the valve device. Other configurations are basically the same as those of the first embodiment. Here, portions different from the first embodiment will be described.
本実施の形態4においては、上記実施の形態1と比較して、弁装置の構成が異なる。他の構成は、基本的に実施の形態1と同様である。ここでは、実施の形態1と異なる部分について説明する。 [4. Embodiment 4]
The fourth embodiment differs from the first embodiment in the configuration of the valve device. Other configurations are basically the same as those of the first embodiment. Here, portions different from the first embodiment will be described.
図15は、本実施の形態4に従う弁装置付き包装体に搭載されている弁装置200Cの平面図である。図15に示されるように、弁装置200Cは、弁機能部210Cと、シール取付け部220Cとを含んでいる。シール取付け部220Cは、少なくともその一部が、包装材料110,120に挟まれて、ヒートシールされる部分である。シール取付け部220Cは、実施の形態1と比較して、断面形状が異なる。弁機能部210Cは、基本的には実施の形態1と同様であるが、シール取付け部220C内に形成されている通気路A2(図16)の形状の違いに応じて、筐体及び弁機構の形状が一部変更されている。
FIG. 15 is a plan view of valve device 200C mounted on the package with a valve device according to the fourth embodiment. As shown in FIG. 15, the valve device 200C includes a valve function unit 210C and a seal mounting unit 220C. At least a part of the seal mounting portion 220C is a portion that is heat-sealed by being sandwiched between the packaging materials 110 and 120. The seal mounting portion 220C has a different cross-sectional shape as compared with the first embodiment. The valve function part 210C is basically the same as that of the first embodiment, but according to the difference in the shape of the ventilation path A2 (FIG. 16) formed in the seal attachment part 220C, the housing and the valve mechanism. The shape of has been partially changed.
図16は、図15のXVI-XVI断面図である。図16に示されるように、シール取付け部220C内(通気路A2内)には、ピラー50,51が形成されている。ピラー50,51の各々は、弁装置付き包装体の厚み方向(矢印UD方向)に延び、弁装置付き包装体の厚み方向の両端がシール取付け部220Cの内周に接続されている。また、ピラー50,51の各々は、通気路A2内において矢印FB方向に延びている(図15)。なお、ピラーの数は、必ずしも2本である必要はなく、少なくとも1本あればよい。
FIG. 16 is a sectional view taken along the line XVI-XVI in FIG. As shown in FIG. 16, pillars 50 and 51 are formed in the seal attachment portion 220C (in the ventilation path A2). Each of the pillars 50 and 51 extends in the thickness direction (the direction of the arrow UD) of the package with the valve device, and both ends in the thickness direction of the package with the valve device are connected to the inner periphery of the seal mounting portion 220C. Each of the pillars 50 and 51 extends in the direction of arrow FB in the ventilation path A2 (FIG. 15). In addition, the number of pillars does not necessarily need to be two, and at least one pillar is sufficient.
本実施の形態4に従う弁装置付き包装体においては、通気路A2内にピラー50,51が形成されているため、対向する熱融着性樹脂層35に挟まれたシール取付け部220Cに圧力及び熱が加えられたとしても、通気路A2が維持される。したがって、この弁装置付き包装体によれば、対向する熱融着性樹脂層35の融着時におけるシール取付け部220C内の通気路A2の破損を抑制することができる。
In the package with a valve device according to the fourth embodiment, since pillars 50 and 51 are formed in air passage A2, pressure and pressure are applied to seal mounting portion 220C sandwiched between opposed heat-fusible resin layers 35. Even when heat is applied, the ventilation path A2 is maintained. Therefore, according to the package with the valve device, it is possible to suppress the breakage of the ventilation path A2 in the seal attachment portion 220C when the opposing heat-fusible resin layers 35 are fused.
なお、弁装置200Cは、本開示の「弁装置」の一例であり、弁機能部210Cは、本開示の「第1部分」の一例であり、シール取付け部220Cは、本開示の「第2部分」の一例である。ピラー50,51は、本開示の「ピラー」の一例である。通気路A2は、本開示の「通気路」の一例である。
The valve device 200C is an example of the “valve device” of the present disclosure, the valve function unit 210C is an example of the “first part” of the present disclosure, and the seal mounting unit 220C is the “second portion” of the present disclosure. "Part". The pillars 50 and 51 are examples of the “pillar” of the present disclosure. The air passage A2 is an example of the “air passage” of the present disclosure.
[5.実施の形態5]
本実施の形態5においては、上記実施の形態1と比較して、弁装置の構成が異なる。他の構成は、基本的に実施の形態1と同様である。ここでは、実施の形態1と異なる部分について説明する。 [5. Fifth Embodiment]
The fifth embodiment is different from the first embodiment in the configuration of the valve device. Other configurations are basically the same as those of the first embodiment. Here, portions different from the first embodiment will be described.
本実施の形態5においては、上記実施の形態1と比較して、弁装置の構成が異なる。他の構成は、基本的に実施の形態1と同様である。ここでは、実施の形態1と異なる部分について説明する。 [5. Fifth Embodiment]
The fifth embodiment is different from the first embodiment in the configuration of the valve device. Other configurations are basically the same as those of the first embodiment. Here, portions different from the first embodiment will be described.
図17は、本実施の形態5に従う弁装置付き包装体に搭載されている弁装置200Dの平面図である。図17に示されるように、弁装置200Dは、弁機能部210と、シール取付け部220Dとを含んでいる。弁機能部210の構成は、実施の形態1と同様である。
FIG. 17 is a plan view of valve device 200D mounted on the package with a valve device according to the fifth embodiment. As shown in FIG. 17, the valve device 200D includes a valve function part 210 and a seal mounting part 220D. The configuration of the valve function unit 210 is the same as in the first embodiment.
シール取付け部220Dは、少なくともその一部が、包装材料110,120に挟まれて、ヒートシールされる部分である。シール取付け部220Dは、実施の形態1と比較して、外表面が異なる。具体的には、シール取付け部220Dの外表面はナシ地となっている。該ナシ地の表面粗さRaは、たとえば、1μm~20μmである。
At least a part of the seal mounting portion 220D is a portion that is heat-sealed by being sandwiched between the packaging materials 110 and 120. The outer surface of seal mounting portion 220D is different from that of the first embodiment. Specifically, the outer surface of the seal mounting portion 220D is a pear. The surface roughness Ra of the pear is, for example, 1 μm to 20 μm.
本実施の形態5に従う弁装置付き包装体においては、シール取付け部220Dの外表面がナシ地であるため、シール取付け部220Dに当接した位置において熱融着性樹脂が溶けやすい。したがって、この弁装置付き包装体によれば、実施の形態1(シール取付け部220Dの外表面が滑らかな場合)と比較して、弁装置200Dのシール取付け部220Dを収容体100に強固に固定することができる。
In the package with the valve device according to the fifth embodiment, since the outer surface of the seal attachment portion 220D is a pear, the heat-fusible resin is easily melted at the position where the seal attachment portion 220D abuts. Therefore, according to the package with the valve device, the seal mounting portion 220D of the valve device 200D is firmly fixed to the container 100 as compared with the first embodiment (when the outer surface of the seal mounting portion 220D is smooth). can do.
なお、弁装置200Dは、本開示の「弁装置」の一例であり、シール取付け部220Dは、本開示の「第2部分」の一例である。
Note that the valve device 200D is an example of the “valve device” of the present disclosure, and the seal mounting portion 220D is an example of the “second portion” of the present disclosure.
[6.実施の形態6]
本実施の形態6においては、上記実施の形態1と比較して、弁装置の構成が異なる。他の構成は、基本的に実施の形態1と同様である。ここでは、実施の形態1と異なる部分について説明する。 [6. Embodiment 6]
The sixth embodiment differs from the first embodiment in the configuration of the valve device. Other configurations are basically the same as those of the first embodiment. Here, portions different from the first embodiment will be described.
本実施の形態6においては、上記実施の形態1と比較して、弁装置の構成が異なる。他の構成は、基本的に実施の形態1と同様である。ここでは、実施の形態1と異なる部分について説明する。 [6. Embodiment 6]
The sixth embodiment differs from the first embodiment in the configuration of the valve device. Other configurations are basically the same as those of the first embodiment. Here, portions different from the first embodiment will be described.
図18は、本実施の形態6に従う弁装置付き包装体に搭載されている弁装置200Eの平面図である。図18に示されるように、弁装置200Eは、弁機能部210と、シール取付け部220Eとを含んでいる。弁機能部210の構成は、実施の形態1と同様である。
FIG. 18 is a plan view of valve device 200E mounted on the package with a valve device according to the sixth embodiment. As shown in FIG. 18, the valve device 200E includes a valve function unit 210 and a seal mounting unit 220E. The configuration of the valve function unit 210 is the same as in the first embodiment.
シール取付け部220Eは、少なくともその一部が、包装材料110,120に挟まれて、ヒートシールされる部分である。シール取付け部220Eは、実施の形態1と比較して、外表面が異なる。具体的には、シール取付け部220Eの外表面には、周方向に一周連続して延びる凸条部60が形成されている。凸条部60は、シール取付け部220Eにおいて、矢印FB方向に3本形成されている。なお、凸条部60は、必ずしも3本である必要はなく、少なくとも1本形成されていればよい。
The seal mounting portion 220E is a portion where at least a part thereof is heat-sealed by being sandwiched between the packaging materials 110 and 120. The outer surface of the seal attachment portion 220E is different from that of the first embodiment. Specifically, on the outer surface of the seal mounting portion 220E, a protruding ridge portion 60 extending continuously in the circumferential direction is formed. The three protruding ridges 60 are formed in the arrow FB direction in the seal mounting portion 220E. The number of the ridges 60 is not necessarily three, and at least one ridge 60 may be formed.
図19は、図18のXIX-XIX断面図である。図19に示されるように、凸条部60の断面は、半円形状である。該半円形状のRは、たとえば、0.05mm~1.0mmである。シール取付け部220Eのうち、凸条部60が形成されている部分における直径L12(弁装置付き包装体の厚み方向の長さ、弁装置付き包装体の幅方向の長さ)は、凸条部60が形成されていない部分における直径L11よりも長い。
FIG. 19 is a sectional view taken along the line XIX-XIX in FIG. As shown in FIG. 19, the cross section of the ridge 60 is semicircular. The semicircular R is, for example, 0.05 mm to 1.0 mm. The diameter L12 (the length in the thickness direction of the package with the valve device and the length in the width direction of the package with the valve device) in the portion where the convex portion 60 is formed in the seal attachment portion 220E is the convex portion. It is longer than the diameter L11 in the part where 60 is not formed.
ヒートシール時に、凸条部60は、熱融着性樹脂層35に確実に接するため、包装材料110,120に融着しやすい。本実施の形態6に従う弁装置付き包装体においては、凸条部60がシール取付け部220Eの外表面の周方向に一周連続して延びている。したがって、この弁装置付き包装体によれば、シール取付け部220Eの周方向一周において、熱融着性樹脂層35とシール取付け部220Eとを融着させることができる。また、この弁装置付き包装体においては、実施の形態1(シール取付け部220Eに凸条部60が形成されていない場合)と比較して、シール取付け部220Eの外表面と熱融着性樹脂との接触面積が大きくなっているため、弁装置200Eのシール取付け部220Eを包装材料110に強固に固定することができる。
(4) At the time of heat sealing, the protruding ridges 60 surely come into contact with the heat-fusible resin layer 35, so that they are easily fused to the packaging materials 110 and 120. In the package with a valve device according to the sixth embodiment, ridge 60 extends continuously around the outer surface of seal mounting portion 220E in the circumferential direction. Therefore, according to this package with a valve device, the heat-fusible resin layer 35 and the seal attachment portion 220E can be fused together in one circumferential direction of the seal attachment portion 220E. Further, in this package with a valve device, the outer surface of the seal mounting portion 220E and the heat-fusible resin are compared with the first embodiment (when the convex ridge portion 60 is not formed in the seal mounting portion 220E). Since the contact area with the seal member 220 is large, the seal mounting portion 220E of the valve device 200E can be firmly fixed to the packaging material 110.
なお、弁装置200Eは、本開示の「弁装置」の一例であり、シール取付け部220Eは、本開示の「第2部分」の一例である。凸条部60は、本開示の「凸条部」の一例である。通気路A3は、本開示の「通気路」の一例である。
Note that the valve device 200E is an example of the “valve device” of the present disclosure, and the seal mounting portion 220E is an example of the “second portion” of the present disclosure. The ridge 60 is an example of the “ridge” of the present disclosure. The air passage A3 is an example of the “air passage” of the present disclosure.
また、本実施の形態6では周方向に一周連続して伸びる凸条部60としたが、凸条部60の形成位置は、周方向に伸びていれば、一周全体に存在せずとも良く、連続せずとも良い。たとえば、上述の実施の形態3のような翼状延端部40,41を備える場合には、この翼状延端部40,41を含めて一周させる凸条部60を備える必要はなく、この翼状延端部40,41の先端部分には凸条部60を備えない、或いは、この翼状延端部40,41には凸条部60を備えないことも可能であり、凸条部60を周方向に間欠的に形成することも可能である。
Further, in the sixth embodiment, the ridge 60 extends continuously in the circumferential direction. However, the ridge 60 may be formed on the entire circumference as long as it extends in the circumferential direction. It does not have to be continuous. For example, when the wing-shaped extending ends 40 and 41 are provided as in the above-described third embodiment, it is not necessary to provide the ridge 60 for making a full circle including the wing-shaped extending ends 40 and 41, and the wing-shaped extending end is not required. It is also possible to provide no ridge 60 at the tip of the ends 40, 41, or to provide no ridge 60 in the wing-like extending ends 40, 41, and to extend the ridge 60 in the circumferential direction. It is also possible to form it intermittently.
[7.実施の形態7]
本実施の形態7においては、上記実施の形態1と比較して、弁装置の構成が異なる。他の構成は、基本的に実施の形態1と同様である。ここでは、実施の形態1と異なる部分について説明する。 [7. Embodiment 7]
The seventh embodiment is different from the first embodiment in the configuration of the valve device. Other configurations are basically the same as those of the first embodiment. Here, portions different from the first embodiment will be described.
本実施の形態7においては、上記実施の形態1と比較して、弁装置の構成が異なる。他の構成は、基本的に実施の形態1と同様である。ここでは、実施の形態1と異なる部分について説明する。 [7. Embodiment 7]
The seventh embodiment is different from the first embodiment in the configuration of the valve device. Other configurations are basically the same as those of the first embodiment. Here, portions different from the first embodiment will be described.
図20は、本実施の形態7に従う弁装置付き包装体に搭載されている弁装置200Fの平面図である。図20に示されるように、弁装置200Fは、弁機能部210Fと、シール取付け部220Fとを含んでいる。シール取付け部220Fは、少なくともその一部が、包装材料110,120に挟まれて、ヒートシールされる部分である。弁機能部210F及びシール取付け部220Fは、実施の形態1と比較して、断面形状が異なる。
FIG. 20 is a plan view of valve device 200F mounted on the package with a valve device according to the seventh embodiment. As shown in FIG. 20, the valve device 200F includes a valve function unit 210F and a seal mounting unit 220F. At least a part of the seal mounting portion 220F is a portion that is heat-sealed by being sandwiched between the packaging materials 110 and 120. The valve function part 210F and the seal attachment part 220F have different cross-sectional shapes as compared with the first embodiment.
図21は、図20のXXI-XXI断面図である。図21に示されるように、弁機能部210Fの断面は、半円形状である。すなわち、弁機能部210Fの矢印U方向の面は、平面になっている。また、シール取付け部220Fの断面は、矢印LR方向の両端部に翼状延端部40F,41Fを有する。シール取付け部220Fの矢印U方向の面は、平面になっている。弁機能部210Fの矢印U方向の面と、シール取付け部220Fの矢印U方向の面とは、面一になっている。
FIG. 21 is a cross-sectional view taken along the line XXI-XXI of FIG. As shown in FIG. 21, the cross section of the valve function unit 210F has a semicircular shape. That is, the surface of the valve function unit 210F in the direction of the arrow U is flat. The cross section of the seal mounting portion 220F has wing-like extending ends 40F and 41F at both ends in the direction of the arrow LR. The surface of the seal mounting portion 220F in the direction of arrow U is flat. The surface of the valve function portion 210F in the direction of the arrow U and the surface of the seal mounting portion 220F in the direction of the arrow U are flush with each other.
したがって、矢印U方向の面を下にして弁装置200Fを配置すると、弁装置200Fは転がらない。したがって、本実施の形態7に従う弁装置付き包装体によれば、弁装置200Fの収容体100への取り付け時に、弁装置200Fが転がらないため、弁装置200Fの位置決めを容易に行なうことができる。
Therefore, when the valve device 200F is arranged with the surface in the direction of the arrow U facing down, the valve device 200F does not roll. Therefore, according to the package with a valve device according to the seventh embodiment, when mounting valve device 200F to container 100, valve device 200F does not roll, so that valve device 200F can be easily positioned.
図22は、弁装置200Fの収容体100への取り付け時の様子を示す図である。図22に示されるように、弁装置200Fの収容体100への取り付け時に、弁装置200Fの平面は、包装材料120の最内層の面上に載置される。この状態において、弁装置200Fは転がらない。したがって、本実施の形態7に従う弁装置付き包装体によれば、収容体100への弁装置200Fの取り付け時に、弁装置200Fの位置決めを容易に行なうことができる。また、弁装置付き包装体にした状態で、弁装置200Fによる周縁接合部130の膨らみを、収容体100が膨れた方向、すなわち図22では成形部112が突出する上方向に向けることができる。
FIG. 22 is a diagram showing a state when the valve device 200F is attached to the container 100. As shown in FIG. 22, when the valve device 200F is attached to the container 100, the plane of the valve device 200F is placed on the surface of the innermost layer of the packaging material 120. In this state, the valve device 200F does not roll. Therefore, according to the package with a valve device according to the seventh embodiment, when mounting valve device 200F to container 100, positioning of valve device 200F can be easily performed. Further, in the state of the package with the valve device, the bulge of the peripheral joint portion 130 by the valve device 200F can be directed to the direction in which the container 100 bulges, that is, the upward direction from which the molded portion 112 projects in FIG.
なお、弁装置200Fは、本開示の「弁装置」の一例であり、弁機能部210Fは、本開示の「第1部分」の一例であり、シール取付け部220Fは、本開示の「第2部分」の一例である。通気路A4は、本開示の「通気路」の一例である。
The valve device 200F is an example of the “valve device” of the present disclosure, the valve function unit 210F is an example of the “first part” of the present disclosure, and the seal mounting unit 220F is the “second device” of the present disclosure. "Part". The air passage A4 is an example of the “air passage” of the present disclosure.
[8.変形例]
以上、実施の形態1~7について説明したが、本開示は、上記実施の形態1~7に限定されるものではなく、その趣旨を逸脱しない限りにおいて、種々の変更が可能である。以下、変形例について説明する。但し、以下の変形例は適宜組合せ可能である。 [8. Modification]
Although the first to seventh embodiments have been described above, the present disclosure is not limited to the first to seventh embodiments, and various changes can be made without departing from the gist of the present disclosure. Hereinafter, modified examples will be described. However, the following modifications can be combined as appropriate.
以上、実施の形態1~7について説明したが、本開示は、上記実施の形態1~7に限定されるものではなく、その趣旨を逸脱しない限りにおいて、種々の変更が可能である。以下、変形例について説明する。但し、以下の変形例は適宜組合せ可能である。 [8. Modification]
Although the first to seventh embodiments have been described above, the present disclosure is not limited to the first to seventh embodiments, and various changes can be made without departing from the gist of the present disclosure. Hereinafter, modified examples will be described. However, the following modifications can be combined as appropriate.
<8-1>
上記実施の形態1~7において、シール取付け部(シール取付け部220等)の断面は、円形をベースにした形状を有していた。しかしながら、シール取付け部の断面形状は、これに限定されない。たとえば、シール取付け部の断面形状は、多角形をベースにした形状を有してもよい。 <8-1>
In the first to seventh embodiments, the cross section of the seal attaching portion (theseal attaching portion 220 and the like) has a shape based on a circle. However, the cross-sectional shape of the seal mounting portion is not limited to this. For example, the cross-sectional shape of the seal mounting portion may have a shape based on a polygon.
上記実施の形態1~7において、シール取付け部(シール取付け部220等)の断面は、円形をベースにした形状を有していた。しかしながら、シール取付け部の断面形状は、これに限定されない。たとえば、シール取付け部の断面形状は、多角形をベースにした形状を有してもよい。 <8-1>
In the first to seventh embodiments, the cross section of the seal attaching portion (the
図23は、変形例1における弁装置200Gの断面を示す図である。図23に示されるように、弁装置200Gにおいて、シール取付け部220Gの断面は、ひし形形状を有している。シール取付け部220Gにおいて、弁装置付き包装体の幅方向の長さL7は、弁装置付き包装体の厚み方向の長さL8よりも長い。この弁装置付き包装体においては、周縁接合部130のうちシール取付け部220Gが挟まれている部分における弁装置付き包装体の厚み方向の長さと、周縁接合部130のうちシール取付け部220Gが挟まれていない部分における弁装置付き包装体の厚み方向の長さとの差がより小さくなっている。したがって、この弁装置付き包装体によれば、収容体100の周縁全体において熱融着性樹脂層35に適切に圧力及び熱を加えることができ、対向する熱融着性樹脂層35を適切に融着させることができるため、弁装置200Gのシール取付け部220Gを収容体100に強固に固定することができる。
FIG. 23 is a diagram showing a cross section of a valve device 200G according to the first modification. As shown in FIG. 23, in the valve device 200G, the cross section of the seal mounting portion 220G has a rhombic shape. In the seal attachment portion 220G, the length L7 in the width direction of the package with the valve device is longer than the length L8 in the thickness direction of the package with the valve device. In the package with the valve device, the length in the thickness direction of the package with the valve device in the portion where the seal attachment portion 220G is sandwiched in the peripheral joining portion 130 and the seal attachment portion 220G in the peripheral joint portion 130 are sandwiched. The difference from the length in the thickness direction of the package body with the valve device in the portion not provided is smaller. Therefore, according to this package with a valve device, pressure and heat can be appropriately applied to the heat-fusible resin layer 35 over the entire periphery of the container 100, and the opposing heat-fusible resin layer 35 can be appropriately applied. Since the fusion can be performed, the seal mounting portion 220G of the valve device 200G can be firmly fixed to the container 100.
図24は、変形例2における弁装置200Hの断面を示す図である。図24に示されるように、弁装置200Hにおいて、シール取付け部220Hの断面は、弁装置付き包装体の厚み方向の両端部において面取りされたひし形形状、或いは6角形形状を有している。シール取付け部220Hにおいて、弁装置付き包装体の幅方向の長さL9は、弁装置付き包装体の厚み方向の長さL10よりも長い。この弁装置付き包装体においては、周縁接合部130のうちシール取付け部220Hが挟まれている部分における弁装置付き包装体の厚み方向の長さと、周縁接合部130のうちシール取付け部220Hが挟まれていない部分における弁装置付き包装体の厚み方向の長さとの差がより小さくなっている。したがって、この弁装置付き包装体によれば、収容体100の周縁全体において熱融着性樹脂層35に適切に圧力及び熱を加えることができ、対向する熱融着性樹脂層35を適切に融着させることができるため、弁装置200Hのシール取付け部220Hを収容体100に強固に固定することができる。
FIG. 24 is a view showing a cross section of the valve device 200H according to the second modification. As shown in FIG. 24, in the valve device 200H, the cross section of the seal attachment portion 220H has a rhombic shape or a hexagonal shape chamfered at both ends in the thickness direction of the package with the valve device. In the seal attachment portion 220H, the length L9 in the width direction of the package with the valve device is longer than the length L10 in the thickness direction of the package with the valve device. In this package with a valve device, the length in the thickness direction of the package with the valve device in the portion where the seal attachment portion 220H is sandwiched in the peripheral joint portion 130, and the seal attachment portion 220H in the peripheral joint portion 130 is sandwiched. The difference from the length in the thickness direction of the package body with the valve device in the portion not provided is smaller. Therefore, according to this package with a valve device, pressure and heat can be appropriately applied to the heat-fusible resin layer 35 over the entire periphery of the container 100, and the opposing heat-fusible resin layer 35 can be appropriately applied. Since the fusion can be performed, the seal mounting portion 220H of the valve device 200H can be firmly fixed to the container 100.
図25は、変形例3における弁装置200Iの断面を示す図である。図25に示されるように、弁装置200Iにおいて、シール取付け部220Iの断面は、ひし形の(弁装置付き包装体の幅方向の)両端部に翼状延端部40I,41Iが設けられた形状を有している。この弁装置付き包装体においては、たとえば実施の形態1(シール取付け部220Iに翼状延端部40I,41Iが設けられていない場合)と比較して、周縁接合部130のうちシール取付け部220Iが挟まれていない部分から周縁接合部130のうちシール取付け部220Iが挟まれている部分へ移行する位置における弁装置付き包装体の厚み方向の変化が滑らかである。したがって、この弁装置付き包装体によれば、シール取付け部220Iが熱融着性樹脂層35によって挟まれている位置とシール取付け部220Iが熱融着性樹脂層35に挟まれていない位置との境界において包装材料110,120に無理な力が加わらないため、弁装置200Iのシール取付け部220Iを収容体100に強固に固定することができる。
FIG. 25 is a view showing a cross section of the valve device 200I according to the third modification. As shown in FIG. 25, in the valve device 200I, the cross section of the seal attachment portion 220I has a shape in which wing-shaped extending ends 40I and 41I are provided at both ends of the rhombus (in the width direction of the package with the valve device). Have. In this package with a valve device, the seal mounting portion 220I of the peripheral joining portion 130 is different from the first embodiment (in the case where the wing-shaped extending ends 40I and 41I are not provided in the seal mounting portion 220I), for example. The change in the thickness direction of the packaging body with the valve device at the position where the portion that is not sandwiched transitions to the portion of the peripheral joining portion 130 where the seal attachment portion 220I is sandwiched is smooth. Therefore, according to this package with a valve device, the position where the seal attachment portion 220I is sandwiched by the heat-fusible resin layer 35 and the position where the seal attachment portion 220I is not sandwiched by the heat-fusible resin layer 35 Since no excessive force is applied to the packaging materials 110 and 120 at the boundary of, the seal mounting portion 220I of the valve device 200I can be firmly fixed to the container 100.
図26は、変形例4における弁装置200Jの平面図である。図26に示されるように、弁装置200Jは、弁機能部210Jと、シール取付け部220Jとを含んでいる。シール取付け部220J内には、通気路A5が形成されている。
FIG. 26 is a plan view of a valve device 200J according to the fourth modification. As shown in FIG. 26, the valve device 200J includes a valve function part 210J and a seal mounting part 220J. An air passage A5 is formed in the seal attachment portion 220J.
図27は、図26のXXVII-XXVII断面図である。この断面は、通気路A5の中心線C1を法線とする面ともいえる。図27に示されるように、弁装置200Jにおいて、シール取付け部220Jの断面は、六角形(多角形)形状を有している。六角形の各角には、R(たとえば、R=0.2mm~2.0mm)が形成されている。この弁装置付き包装体によれば、たとえば、シール取付け部220Jのうち収容体100内に位置する部分が収容体100内の内容物400を傷つける可能性を低減することができ、かつ、シール取付け部220Jのうち熱融着性樹脂層35に挟まれている部分が熱融着性樹脂層35を傷つけ、熱融着性樹脂層35の絶縁性を低下させる可能性を低減することができる。
FIG. 27 is a sectional view taken along the line XXVII-XXVII of FIG. This cross section can also be said to be a plane having the center line C1 of the ventilation path A5 as a normal line. As shown in FIG. 27, in the valve device 200J, the cross section of the seal mounting portion 220J has a hexagonal (polygonal) shape. R (for example, R = 0.2 mm to 2.0 mm) is formed at each corner of the hexagon. According to this package with a valve device, for example, it is possible to reduce the possibility that a portion of the seal mounting portion 220J located in the container 100 may damage the contents 400 in the container 100, and to perform the seal mounting. The portion of the portion 220J sandwiched between the heat-fusible resin layers 35 can damage the heat-fusible resin layers 35 and reduce the possibility of lowering the insulating properties of the heat-fusible resin layers 35.
<8-2>
上記実施の形態1~7において、包装材料110のフランジ部114は、フラットな状態であった。しかしながら、フランジ部114の形状は、これに限定されない。たとえば、フランジ部114には、弁装置200のシール取付け部220を配置するための弁装置配置部が予め成形されていてもよい。 <8-2>
In the first to seventh embodiments, theflange 114 of the packaging material 110 is in a flat state. However, the shape of the flange 114 is not limited to this. For example, a valve device arranging portion for arranging the seal mounting portion 220 of the valve device 200 may be formed in the flange portion 114 in advance.
上記実施の形態1~7において、包装材料110のフランジ部114は、フラットな状態であった。しかしながら、フランジ部114の形状は、これに限定されない。たとえば、フランジ部114には、弁装置200のシール取付け部220を配置するための弁装置配置部が予め成形されていてもよい。 <8-2>
In the first to seventh embodiments, the
図28は、変形例5における包装材料110Kの平面図である。図28に示されるように、フランジ部114Kには、弁装置配置部116Kが形成されている。
FIG. 28 is a plan view of a packaging material 110K in Modification Example 5. As shown in FIG. 28, a valve device arrangement portion 116K is formed in the flange portion 114K.
図29は、図28のXXIX-XXIX断面図である。図29に示されるように、フランジ部114Kに形成された弁装置配置部116Kは、半円形状を有している。この半円の直径は、たとえば、シール取付け部220の直径よりも僅かに長い。弁装置配置部116Kに、たとえば、シール取付け部220が配置された状態で、収容体の周縁におけるヒートシールが行なわれる。これにより、ヒートシール時における包装材料の変形が抑制され、シール取付け部220付近でピンホールや破れが生じる可能性を低減することができる。なお、弁装置配置部116Kは、必ずしも包装材料110Kに設けられる必要はなく、包装材料120に設けられてもよい。この場合であっても、弁装置配置部116Kが包装材料110Kに設けられた場合と同様の効果を得ることができる。
FIG. 29 is a sectional view taken along the line XXIX-XXIX of FIG. As shown in FIG. 29, the valve device arrangement portion 116K formed on the flange portion 114K has a semicircular shape. The diameter of this semicircle is, for example, slightly longer than the diameter of the seal mounting part 220. In a state where, for example, the seal mounting portion 220 is arranged in the valve device arrangement portion 116K, heat sealing is performed on the periphery of the container. Thereby, the deformation of the packaging material at the time of heat sealing is suppressed, and the possibility that pinholes or tears occur near the seal attachment portion 220 can be reduced. In addition, the valve device arrangement part 116K does not necessarily need to be provided in the packaging material 110K, and may be provided in the packaging material 120. Even in this case, the same effect as when the valve device arrangement portion 116K is provided on the packaging material 110K can be obtained.
<8-3>
上記実施の形態1~7においては、シール取付け部(たとえば、シール取付け部220)の一部だけが周縁接合部130において熱融着性樹脂層35に挟まれていた。しかしながら、シール取付け部の取付け状態は、これに限定されない。たとえば、シール取付け部の全体が周縁接合部130において熱融着性樹脂層35に挟まれてもよい。このような場合であっても、シール取付け部(たとえば、シール取付け部220)の弁機能部(たとえば、弁機能部210)とは反対側の端部の平面視における角にはRが形成されているため、該端部が熱融着性樹脂層35を傷つけ、熱融着性樹脂層35の絶縁性を低下させる可能性は低い。 <8-3>
In the first to seventh embodiments, only a part of the seal attaching portion (for example, the seal attaching portion 220) is sandwiched between the heat-fusible resin layers 35 at the peripheral joiningportion 130. However, the mounting state of the seal mounting portion is not limited to this. For example, the entirety of the seal attaching portion may be sandwiched between the heat-fusible resin layers 35 at the peripheral joining portion 130. Even in such a case, R is formed at the corner in plan view of the end of the seal mounting portion (for example, the seal mounting portion 220) opposite to the valve function portion (for example, the valve function portion 210). Therefore, it is unlikely that the ends damage the heat-fusible resin layer 35 and lower the insulating properties of the heat-fusible resin layer 35.
上記実施の形態1~7においては、シール取付け部(たとえば、シール取付け部220)の一部だけが周縁接合部130において熱融着性樹脂層35に挟まれていた。しかしながら、シール取付け部の取付け状態は、これに限定されない。たとえば、シール取付け部の全体が周縁接合部130において熱融着性樹脂層35に挟まれてもよい。このような場合であっても、シール取付け部(たとえば、シール取付け部220)の弁機能部(たとえば、弁機能部210)とは反対側の端部の平面視における角にはRが形成されているため、該端部が熱融着性樹脂層35を傷つけ、熱融着性樹脂層35の絶縁性を低下させる可能性は低い。 <8-3>
In the first to seventh embodiments, only a part of the seal attaching portion (for example, the seal attaching portion 220) is sandwiched between the heat-fusible resin layers 35 at the peripheral joining
<8-4>
上記実施の形態1~7においては、弁装置(たとえば、弁装置200)において、弁機能部(たとえば、弁機能部210)とシール取付け部(たとえば、シール取付け部220)との境界に段差が形成されていた。しかしながら、弁機能部とシール取付け部との境界には、必ずしも段差が形成されていなくてもよい。たとえば、弁機能部の断面の直径とシール取付け部の断面の直径とが同一であり、弁機能部とシール取付け部とがフラットに繋がっていてもよい。 <8-4>
InEmbodiments 1 to 7, in the valve device (for example, valve device 200), a step is formed at the boundary between the valve function portion (for example, valve function portion 210) and the seal mounting portion (for example, seal mounting portion 220). Had been formed. However, a step is not necessarily formed at the boundary between the valve function part and the seal attachment part. For example, the cross-sectional diameter of the valve function part and the cross-sectional diameter of the seal mounting part may be the same, and the valve function part and the seal mounting part may be connected flat.
上記実施の形態1~7においては、弁装置(たとえば、弁装置200)において、弁機能部(たとえば、弁機能部210)とシール取付け部(たとえば、シール取付け部220)との境界に段差が形成されていた。しかしながら、弁機能部とシール取付け部との境界には、必ずしも段差が形成されていなくてもよい。たとえば、弁機能部の断面の直径とシール取付け部の断面の直径とが同一であり、弁機能部とシール取付け部とがフラットに繋がっていてもよい。 <8-4>
In
<8-5>
上記実施の形態1~7において、シール取付け部(シール取付け部220等)内に形成された通気路(たとえば、通気路A1)の断面は、円形をベースにした形状を有していた。しかしながら、通気路の断面形状は、これに限定されない。たとえば、通気路の断面形状は、多角形をベースにした形状であってもよい。 <8-5>
In the first to seventh embodiments, the cross section of the air passage (for example, the air passage A1) formed in the seal attachment portion (theseal attachment portion 220 and the like) has a shape based on a circle. However, the cross-sectional shape of the ventilation path is not limited to this. For example, the cross-sectional shape of the ventilation path may be a shape based on a polygon.
上記実施の形態1~7において、シール取付け部(シール取付け部220等)内に形成された通気路(たとえば、通気路A1)の断面は、円形をベースにした形状を有していた。しかしながら、通気路の断面形状は、これに限定されない。たとえば、通気路の断面形状は、多角形をベースにした形状であってもよい。 <8-5>
In the first to seventh embodiments, the cross section of the air passage (for example, the air passage A1) formed in the seal attachment portion (the
<8-6>
上記実施の形態1~7において、シール取付け部(たとえば、シール取付け部220)の弁機能部(たとえば、弁機能部210)と反対側の端部の角にはRが形成されていた。しかしながら、該角には必ずしもRが形成されていなくてもよい。 <8-6>
InEmbodiments 1 to 7, R is formed at the corner of the end of the seal attachment portion (eg, the seal attachment portion 220) opposite to the valve function portion (eg, the valve function portion 210). However, the corner does not necessarily have to be formed with R.
上記実施の形態1~7において、シール取付け部(たとえば、シール取付け部220)の弁機能部(たとえば、弁機能部210)と反対側の端部の角にはRが形成されていた。しかしながら、該角には必ずしもRが形成されていなくてもよい。 <8-6>
In
<8-7>
上記実施の形態1~7において、弁装置(たとえば、弁装置200)は、いわゆる逆止弁であった。しかしながら、弁装置は、必ずしも逆止弁である必要はない。弁装置は、たとえば、いわゆる破壊弁や、選択透過弁であってもよい。 <8-7>
In the first to seventh embodiments, the valve device (for example, the valve device 200) is a so-called check valve. However, the valve device does not necessarily have to be a check valve. The valve device may be, for example, a so-called break valve or a selective permeation valve.
上記実施の形態1~7において、弁装置(たとえば、弁装置200)は、いわゆる逆止弁であった。しかしながら、弁装置は、必ずしも逆止弁である必要はない。弁装置は、たとえば、いわゆる破壊弁や、選択透過弁であってもよい。 <8-7>
In the first to seventh embodiments, the valve device (for example, the valve device 200) is a so-called check valve. However, the valve device does not necessarily have to be a check valve. The valve device may be, for example, a so-called break valve or a selective permeation valve.
<8-8>
再び図1を参照して、上記実施の形態1~7においては、タブ300が収容体100の矢印LR方向の両端部に設けられ、弁装置(たとえば、弁装置200)が収容体100の矢印F方向の端部に設けられていた。しかしながら、弁装置200及びタブ300の位置関係は、これに限定されない。たとえば、両方のタブ300が収容体100の周縁の同一の辺に配置され、弁装置が2つのタブ300の間に配置されてもよいし、両方のタブ300が収容体100の周縁の同一の辺に配置され、タブ300が配置された辺以外の三辺のいずれかの一辺に弁装置が配置されてもよい。 <8-8>
Referring to FIG. 1 again, in the above-described first to seventh embodiments,tabs 300 are provided at both ends in the direction of arrow LR of container 100, and the valve device (for example, valve device 200) is provided with the arrow of container 100. It was provided at the end in the F direction. However, the positional relationship between the valve device 200 and the tab 300 is not limited to this. For example, both tabs 300 may be disposed on the same side of the periphery of the container 100, the valve device may be disposed between the two tabs 300, or both tabs 300 may be the same on the periphery of the container 100. The valve device may be disposed on any one of the three sides other than the side on which the tab 300 is disposed on the side.
再び図1を参照して、上記実施の形態1~7においては、タブ300が収容体100の矢印LR方向の両端部に設けられ、弁装置(たとえば、弁装置200)が収容体100の矢印F方向の端部に設けられていた。しかしながら、弁装置200及びタブ300の位置関係は、これに限定されない。たとえば、両方のタブ300が収容体100の周縁の同一の辺に配置され、弁装置が2つのタブ300の間に配置されてもよいし、両方のタブ300が収容体100の周縁の同一の辺に配置され、タブ300が配置された辺以外の三辺のいずれかの一辺に弁装置が配置されてもよい。 <8-8>
Referring to FIG. 1 again, in the above-described first to seventh embodiments,
<8-9>
上記実施の形態1~7において、収容体100は、エンボス成形等によって成形された包装材料110と、包装材料110とは別体の包装材料120とを含んでいた。しかしながら、収容体100は、必ずしもこのような構成でなくてもよい。 <8-9>
InEmbodiments 1 to 7, the container 100 includes the packaging material 110 formed by embossing or the like and the packaging material 120 separate from the packaging material 110. However, the container 100 does not necessarily have to have such a configuration.
上記実施の形態1~7において、収容体100は、エンボス成形等によって成形された包装材料110と、包装材料110とは別体の包装材料120とを含んでいた。しかしながら、収容体100は、必ずしもこのような構成でなくてもよい。 <8-9>
In
たとえば、包装材料110と包装材料120とが予め一辺において一体化されて(繋がって)いてもよい。この場合には、包装材料110のフランジ部114の端部において、包装材料110と包装材料120とが一体化しており(繋がっており)、包装材料110と包装材料120とが重ねられた状態で四方シールすることによって、収容体100内に内容物400が密封されてもよい。また、包装材料110と包装材料120とが一体化している辺においてはフランジ部114が省略されており、包装材料110と包装材料120とが重ねられた状態で三方シールすることによって、収容体100内に内容物400が密封されてもよい。
For example, the packaging material 110 and the packaging material 120 may be integrated (connected) in one side in advance. In this case, at the end of the flange portion 114 of the packaging material 110, the packaging material 110 and the packaging material 120 are integrated (connected), and the packaging material 110 and the packaging material 120 are stacked. The contents 400 may be sealed in the container 100 by performing four-side sealing. Further, the flange portion 114 is omitted on the side where the packaging material 110 and the packaging material 120 are integrated, and the packaging material 110 and the packaging material 120 are sealed in a three-way manner in a stacked state, so that the container 100 The contents 400 may be sealed therein.
また、たとえば、包装材料120は、包装材料110と同様の形状に成形されていてもよい。また、収容体100は、たとえば、パウチタイプの収容体であってもよい。パウチタイプの収容体は、三方シールタイプ、四方シールタイプ、ピロータイプ、ガセットタイプ等のいずれのタイプであってもよい。
In addition, for example, the packaging material 120 may be formed in the same shape as the packaging material 110. The container 100 may be, for example, a pouch-type container. The pouch type container may be any type such as a three-side seal type, a four-side seal type, a pillow type, and a gusset type.
<8-10>
上記実施の形態1~7において、弁機能部(たとえば、弁機能部210)の筐体とシール取付け部(たとえば、シール取付け部220)の筐体とは同一の材料(樹脂)で形成されていた。しかしながら、弁機能部の筐体とシール取付け部の筐体とは、必ずしも同一の材料で形成されている必要はない。たとえば、弁機能部の筐体とシール取付け部の筐体とが異なる材料で構成され、弁機能部の材質の融点がシール取付け部の材質の融点よりも高くてもよい。たとえば、シール取付け部がポリプロピレン(PP)で構成され、弁機能部がPPより融点が高い樹脂(たとえば、フッ素系樹脂、ポリエステル系樹脂、ポリイミド系樹脂、ポリカーボネート系樹脂、アクリル樹脂)や金属で構成されてもよい。シール取付け部に用いる樹脂としては、包装材料の内層と一体化しやすいポリプロピレン(PP)が好ましい。 <8-10>
In the first to seventh embodiments, the casing of the valve function section (for example, the valve function section 210) and the casing of the seal attaching section (for example, the seal attaching section 220) are formed of the same material (resin). Was. However, the casing of the valve function section and the casing of the seal mounting section need not necessarily be formed of the same material. For example, the housing of the valve function part and the housing of the seal attachment part may be made of different materials, and the melting point of the material of the valve function part may be higher than the melting point of the material of the seal attachment part. For example, the seal attachment portion is made of polypropylene (PP), and the valve function portion is made of a resin having a melting point higher than PP (for example, a fluorine resin, a polyester resin, a polyimide resin, a polycarbonate resin, an acrylic resin) or a metal. May be done. As the resin used for the seal attachment portion, polypropylene (PP) that is easily integrated with the inner layer of the packaging material is preferable.
上記実施の形態1~7において、弁機能部(たとえば、弁機能部210)の筐体とシール取付け部(たとえば、シール取付け部220)の筐体とは同一の材料(樹脂)で形成されていた。しかしながら、弁機能部の筐体とシール取付け部の筐体とは、必ずしも同一の材料で形成されている必要はない。たとえば、弁機能部の筐体とシール取付け部の筐体とが異なる材料で構成され、弁機能部の材質の融点がシール取付け部の材質の融点よりも高くてもよい。たとえば、シール取付け部がポリプロピレン(PP)で構成され、弁機能部がPPより融点が高い樹脂(たとえば、フッ素系樹脂、ポリエステル系樹脂、ポリイミド系樹脂、ポリカーボネート系樹脂、アクリル樹脂)や金属で構成されてもよい。シール取付け部に用いる樹脂としては、包装材料の内層と一体化しやすいポリプロピレン(PP)が好ましい。 <8-10>
In the first to seventh embodiments, the casing of the valve function section (for example, the valve function section 210) and the casing of the seal attaching section (for example, the seal attaching section 220) are formed of the same material (resin). Was. However, the casing of the valve function section and the casing of the seal mounting section need not necessarily be formed of the same material. For example, the housing of the valve function part and the housing of the seal attachment part may be made of different materials, and the melting point of the material of the valve function part may be higher than the melting point of the material of the seal attachment part. For example, the seal attachment portion is made of polypropylene (PP), and the valve function portion is made of a resin having a melting point higher than PP (for example, a fluorine resin, a polyester resin, a polyimide resin, a polycarbonate resin, an acrylic resin) or a metal. May be done. As the resin used for the seal attachment portion, polypropylene (PP) that is easily integrated with the inner layer of the packaging material is preferable.
この弁装置付き包装体においては、対向する熱融着性樹脂層35の融着時にシール取付け部に圧力及び熱が加えられたとしても、弁機能部の材質の融点がシール取付け部の材質の融点よりも高いため、弁機能部が熱によって変形する可能性が低い。したがって、この弁装置付き包装体によれば、対向する熱融着性樹脂層35の融着時における弁機能部内の弁機構の故障を抑制することができる。
In this package with a valve device, even if pressure and heat are applied to the seal attachment portion when the opposing heat-fusible resin layer 35 is fused, the melting point of the material of the valve function portion is reduced by the material of the seal attachment portion. Since it is higher than the melting point, the possibility that the valve function section is deformed by heat is low. Therefore, according to this package with a valve device, it is possible to suppress failure of the valve mechanism in the valve function unit when the opposing heat-fusible resin layer 35 is fused.
<8-11>
上記実施の形態1~7においては、弁装置200の筐体が樹脂製であるとし、シール取付け部220が熱融着性樹脂層35に直接挟まれていた。しかしながら、弁装置200の筐体は必ずしも樹脂製である必要はなく、たとえば、金属(たとえば、アルミニウム、ステンレス)製であってもよい。この場合には、シール取付け部220と熱融着性樹脂層35との間に接着性保護フィルムが配置されてもよい。接着性保護フィルムは、一方の面が少なくとも樹脂に接着するように構成されており、他方の面が少なくとも金属に接着するように構成されている。接着性保護フィルムとしては、公知の種々の接着性保護フィルムを採用することができ、たとえば、タブフィルム310と同じ接着性保護フィルムを使用することも可能である。 <8-11>
In the first to seventh embodiments, the casing of thevalve device 200 is made of resin, and the seal attachment portion 220 is directly sandwiched between the heat-fusible resin layers 35. However, the housing of the valve device 200 does not necessarily need to be made of resin, and may be made of, for example, metal (for example, aluminum or stainless steel). In this case, an adhesive protection film may be disposed between the seal attachment portion 220 and the heat-fusible resin layer 35. The adhesive protective film is configured so that one surface is bonded to at least resin, and the other surface is configured to be bonded to at least metal. As the adhesive protective film, various known adhesive protective films can be employed. For example, the same adhesive protective film as the tab film 310 can be used.
上記実施の形態1~7においては、弁装置200の筐体が樹脂製であるとし、シール取付け部220が熱融着性樹脂層35に直接挟まれていた。しかしながら、弁装置200の筐体は必ずしも樹脂製である必要はなく、たとえば、金属(たとえば、アルミニウム、ステンレス)製であってもよい。この場合には、シール取付け部220と熱融着性樹脂層35との間に接着性保護フィルムが配置されてもよい。接着性保護フィルムは、一方の面が少なくとも樹脂に接着するように構成されており、他方の面が少なくとも金属に接着するように構成されている。接着性保護フィルムとしては、公知の種々の接着性保護フィルムを採用することができ、たとえば、タブフィルム310と同じ接着性保護フィルムを使用することも可能である。 <8-11>
In the first to seventh embodiments, the casing of the
<8-12>
上記実施の形態1~7において、シール取付け部(たとえば、シール取付け部220)の外周側(シール取付け部の弁機能部(たとえば、弁機能部210)側とは反対側の端部の角)にはRが形成されていたが、シール取付け部の内周側(通気路(たとえば、通気路A1)の縁部)にはRが形成されていなかった。しかしながら、シール取付け部の内周側にRが形成されてもよい。シール取付け部の内周側にRが形成されることによって、シール取付け部の内周側の角が削れてゴミ(たとえば、樹脂、金属等)が収容体100内に落下する可能性を低減することができる。 <8-12>
In the first to seventh embodiments, the outer peripheral side of the seal mounting portion (for example, the seal mounting portion 220) (the corner of the end of the seal mounting portion opposite to the valve function portion (for example, the valve function portion 210)). Was formed, but no R was formed on the inner peripheral side of the seal mounting portion (the edge of the ventilation path (for example, the ventilation path A1)). However, R may be formed on the inner peripheral side of the seal attachment portion. By forming the R on the inner peripheral side of the seal attaching portion, the possibility that the corner on the inner peripheral side of the seal attaching portion is cut and dust (eg, resin, metal, etc.) falls into thecontainer 100 is reduced. be able to.
上記実施の形態1~7において、シール取付け部(たとえば、シール取付け部220)の外周側(シール取付け部の弁機能部(たとえば、弁機能部210)側とは反対側の端部の角)にはRが形成されていたが、シール取付け部の内周側(通気路(たとえば、通気路A1)の縁部)にはRが形成されていなかった。しかしながら、シール取付け部の内周側にRが形成されてもよい。シール取付け部の内周側にRが形成されることによって、シール取付け部の内周側の角が削れてゴミ(たとえば、樹脂、金属等)が収容体100内に落下する可能性を低減することができる。 <8-12>
In the first to seventh embodiments, the outer peripheral side of the seal mounting portion (for example, the seal mounting portion 220) (the corner of the end of the seal mounting portion opposite to the valve function portion (for example, the valve function portion 210)). Was formed, but no R was formed on the inner peripheral side of the seal mounting portion (the edge of the ventilation path (for example, the ventilation path A1)). However, R may be formed on the inner peripheral side of the seal attachment portion. By forming the R on the inner peripheral side of the seal attaching portion, the possibility that the corner on the inner peripheral side of the seal attaching portion is cut and dust (eg, resin, metal, etc.) falls into the
<8-13>
再び図21を参照して、上記実施の形態7においては、弁機能部210F及びシール取付け部220Fの両方の外表面において平面が形成された。しかしながら、必ずしも弁機能部210F及びシール取付け部220Fの両方の外表面において平面が形成される必要はない。弁機能部210F及びシール取付け部220Fの少なくとも一方の外表面に平面が形成されていればよい。 <8-13>
Referring to FIG. 21 again, in the seventh embodiment, a flat surface is formed on both outer surfaces ofvalve function section 210F and seal mounting section 220F. However, it is not always necessary to form a flat surface on both outer surfaces of the valve function part 210F and the seal attachment part 220F. It suffices that a flat surface is formed on at least one outer surface of the valve function part 210F and the seal attachment part 220F.
再び図21を参照して、上記実施の形態7においては、弁機能部210F及びシール取付け部220Fの両方の外表面において平面が形成された。しかしながら、必ずしも弁機能部210F及びシール取付け部220Fの両方の外表面において平面が形成される必要はない。弁機能部210F及びシール取付け部220Fの少なくとも一方の外表面に平面が形成されていればよい。 <8-13>
Referring to FIG. 21 again, in the seventh embodiment, a flat surface is formed on both outer surfaces of
<8-14>
また、上記実施の形態1~7の弁装置付き包装体10は、蓄電デバイスである二次電池ではあるが、電気を出力するものとの概念で定義するものであるから、たとえば、キャパシタ、電気二重層コンデンサ(EDLC)、リチウムイオンキャパシタ等の弁装置付き包装体も包含するものであり、さらに、二次電池の種類についても特に限定されず、たとえば、リチウムイオン電池、リチウムイオンポリマー電池、鉛畜電池、ニッケル・水素電池、ニッケル・カドミウム電池、ニッケル・鉄畜蓄電デバイス、ニッケル・亜鉛畜電池、酸化銀・亜鉛畜電池、金属空気電池、多価カチオン電池、全固体電池等が挙げられる。 <8-14>
Although the package 10 with the valve device according to the first to seventh embodiments is a secondary battery as an electricity storage device, it is defined by the concept of outputting electricity. It also includes a package with a valve device such as a double-layer capacitor (EDLC) and a lithium-ion capacitor. Further, the type of the secondary battery is not particularly limited. For example, a lithium-ion battery, a lithium-ion polymer battery, a lead A storage battery, a nickel-hydrogen battery, a nickel-cadmium battery, a nickel-iron storage battery device, a nickel-zinc storage battery, a silver oxide-zinc storage battery, a metal air battery, a polyvalent cation battery, an all-solid battery, and the like.
また、上記実施の形態1~7の弁装置付き包装体10は、蓄電デバイスである二次電池ではあるが、電気を出力するものとの概念で定義するものであるから、たとえば、キャパシタ、電気二重層コンデンサ(EDLC)、リチウムイオンキャパシタ等の弁装置付き包装体も包含するものであり、さらに、二次電池の種類についても特に限定されず、たとえば、リチウムイオン電池、リチウムイオンポリマー電池、鉛畜電池、ニッケル・水素電池、ニッケル・カドミウム電池、ニッケル・鉄畜蓄電デバイス、ニッケル・亜鉛畜電池、酸化銀・亜鉛畜電池、金属空気電池、多価カチオン電池、全固体電池等が挙げられる。 <8-14>
Although the package 10 with the valve device according to the first to seventh embodiments is a secondary battery as an electricity storage device, it is defined by the concept of outputting electricity. It also includes a package with a valve device such as a double-layer capacitor (EDLC) and a lithium-ion capacitor. Further, the type of the secondary battery is not particularly limited. For example, a lithium-ion battery, a lithium-ion polymer battery, a lead A storage battery, a nickel-hydrogen battery, a nickel-cadmium battery, a nickel-iron storage battery device, a nickel-zinc storage battery, a silver oxide-zinc storage battery, a metal air battery, a polyvalent cation battery, an all-solid battery, and the like.
以下に実施例及び比較例を示して本開示を詳細に説明する。但し本開示は実施例に限定されるものではない。
本 Hereinafter, the present disclosure will be described in detail with reference to Examples and Comparative Examples. However, the present disclosure is not limited to the embodiments.
[実施例1及び比較例1,2]
<包装材料の作製>
基材層としてポリエチレンテレフタレートフィルム(12μm)/接着剤層(2液硬化型ウレタン接着剤(ポリオール化合物と芳香族イソシアネート化合物)、厚さ3μm)/二軸延伸ナイロンフィルム(厚さ15μm)が順に積層された積層フィルムを用意した。次に、基材層の二軸延伸ナイロンフィルム(厚さ15μm)の上に、両面に耐酸性皮膜を形成したアルミニウム箔(JIS H4160:1994 A8021H-O、厚さ40μm、平均結晶粒径4.2μm)からなるバリア層をドライラミネート法により積層させた。具体的には、両面に耐酸性皮膜(クロメート処理によって形成された皮膜であり、クロム量が30mg/m2)を形成したアルミニウム箔の一方面に、2液硬化型ウレタン接着剤(ポリオール化合物と芳香族イソシアネート化合物)を塗布し、アルミニウム箔上に接着剤層(硬化後の厚み3μm)を形成した。次いで、アルミニウム箔上の接着剤層とポリエチレンテレフタレートフィルムを積層した後、エージング処理を実施することにより、基材層/接着剤層/バリア層の積層体を作製した。次に、得られた積層体のバリア層の上に、接着層としての無水マレイン酸変性ポリプロピレン(厚さ40μm)と、熱融着性樹脂層としてのポリプロピレン(厚さ40μm)とを共押出しすることにより、バリア層上に接着層/熱融着性樹脂層を積層させた。次に、得られた積層体をエージングし、加熱することにより、ポリエチレンテレフタレートフィルム(12μm)/接着剤層(3μm)/二軸延伸ナイロンフィルム(15μm)//接着剤層(3μm)/バリア層(40μm)/接着層(40μm)/熱融着性樹脂層(40μm)がこの順に積層された包装材料を得た。 [Example 1 and Comparative Examples 1 and 2]
<Preparation of packaging material>
Polyethylene terephthalate film (12 μm) / adhesive layer (two-component curable urethane adhesive (polyol compound and aromatic isocyanate compound, thickness 3 μm) / biaxially stretched nylon film (thickness 15 μm) laminated in this order) The prepared laminated film was prepared. Next, an aluminum foil (JIS H4160: 1994 A8021HO, thickness of 40 μm, average crystal grain size having an acid resistant film formed on both sides on a biaxially stretched nylon film (thickness: 15 μm) of the base material layer. 2 μm) was laminated by a dry lamination method. Specifically, a two-part curable urethane adhesive (with a polyol compound) is formed on one side of an aluminum foil on which an acid-resistant film (a film formed by chromate treatment and having a chromium content of 30 mg / m 2 ) is formed on both surfaces. An aromatic isocyanate compound) was applied, and an adhesive layer (thickness after curing was 3 μm) was formed on the aluminum foil. Next, after laminating the adhesive layer on the aluminum foil and the polyethylene terephthalate film, an aging treatment was performed to produce a laminate of the base material layer / adhesive layer / barrier layer. Next, maleic anhydride-modified polypropylene (thickness: 40 μm) as an adhesive layer and polypropylene (thickness: 40 μm) as a heat-fusible resin layer are co-extruded on the barrier layer of the obtained laminate. Thereby, the adhesive layer / heat-fusible resin layer was laminated on the barrier layer. Next, the obtained laminate is aged and heated, so that a polyethylene terephthalate film (12 μm) / adhesive layer (3 μm) / biaxially stretched nylon film (15 μm) // adhesive layer (3 μm) / barrier layer (40 μm) / adhesive layer (40 μm) / heat-fusible resin layer (40 μm) were laminated in this order to obtain a packaging material.
<包装材料の作製>
基材層としてポリエチレンテレフタレートフィルム(12μm)/接着剤層(2液硬化型ウレタン接着剤(ポリオール化合物と芳香族イソシアネート化合物)、厚さ3μm)/二軸延伸ナイロンフィルム(厚さ15μm)が順に積層された積層フィルムを用意した。次に、基材層の二軸延伸ナイロンフィルム(厚さ15μm)の上に、両面に耐酸性皮膜を形成したアルミニウム箔(JIS H4160:1994 A8021H-O、厚さ40μm、平均結晶粒径4.2μm)からなるバリア層をドライラミネート法により積層させた。具体的には、両面に耐酸性皮膜(クロメート処理によって形成された皮膜であり、クロム量が30mg/m2)を形成したアルミニウム箔の一方面に、2液硬化型ウレタン接着剤(ポリオール化合物と芳香族イソシアネート化合物)を塗布し、アルミニウム箔上に接着剤層(硬化後の厚み3μm)を形成した。次いで、アルミニウム箔上の接着剤層とポリエチレンテレフタレートフィルムを積層した後、エージング処理を実施することにより、基材層/接着剤層/バリア層の積層体を作製した。次に、得られた積層体のバリア層の上に、接着層としての無水マレイン酸変性ポリプロピレン(厚さ40μm)と、熱融着性樹脂層としてのポリプロピレン(厚さ40μm)とを共押出しすることにより、バリア層上に接着層/熱融着性樹脂層を積層させた。次に、得られた積層体をエージングし、加熱することにより、ポリエチレンテレフタレートフィルム(12μm)/接着剤層(3μm)/二軸延伸ナイロンフィルム(15μm)//接着剤層(3μm)/バリア層(40μm)/接着層(40μm)/熱融着性樹脂層(40μm)がこの順に積層された包装材料を得た。 [Example 1 and Comparative Examples 1 and 2]
<Preparation of packaging material>
Polyethylene terephthalate film (12 μm) / adhesive layer (two-component curable urethane adhesive (polyol compound and aromatic isocyanate compound, thickness 3 μm) / biaxially stretched nylon film (thickness 15 μm) laminated in this order) The prepared laminated film was prepared. Next, an aluminum foil (JIS H4160: 1994 A8021HO, thickness of 40 μm, average crystal grain size having an acid resistant film formed on both sides on a biaxially stretched nylon film (thickness: 15 μm) of the base material layer. 2 μm) was laminated by a dry lamination method. Specifically, a two-part curable urethane adhesive (with a polyol compound) is formed on one side of an aluminum foil on which an acid-resistant film (a film formed by chromate treatment and having a chromium content of 30 mg / m 2 ) is formed on both surfaces. An aromatic isocyanate compound) was applied, and an adhesive layer (thickness after curing was 3 μm) was formed on the aluminum foil. Next, after laminating the adhesive layer on the aluminum foil and the polyethylene terephthalate film, an aging treatment was performed to produce a laminate of the base material layer / adhesive layer / barrier layer. Next, maleic anhydride-modified polypropylene (thickness: 40 μm) as an adhesive layer and polypropylene (thickness: 40 μm) as a heat-fusible resin layer are co-extruded on the barrier layer of the obtained laminate. Thereby, the adhesive layer / heat-fusible resin layer was laminated on the barrier layer. Next, the obtained laminate is aged and heated, so that a polyethylene terephthalate film (12 μm) / adhesive layer (3 μm) / biaxially stretched nylon film (15 μm) // adhesive layer (3 μm) / barrier layer (40 μm) / adhesive layer (40 μm) / heat-fusible resin layer (40 μm) were laminated in this order to obtain a packaging material.
<弁装置付き包装体サンプルの作製>
得られた包装材料を長さ(MD)120mm×幅(TD)110mmの短冊片に裁断した。なお、包装材料のMDが、アルミニウム合金箔の圧延方向(RD)に対応し、包装材料のTDが、アルミニウム合金箔のTDに対応する。1枚の短冊片について、熱融着性樹脂層側が凹部となるようにして冷間成形を行い、長さ(MD)110mm×幅(TD)100mm×深さ5mmの成形部を形成した。具体的には、この短冊片を25℃の環境下にて、長さ(MD)110mm×幅(TD)100mmの口径を有する矩形状の成形金型(雌型、表面は、JIS B 0659-1:2002附属書1(参考) 比較用表面粗さ標準片の表2に規定される、最大高さ粗さ(Rzの呼び値)が3.2μmである。コーナーR2.0mm、稜線R1.0mm)と、これに対応した成形金型(雄型、表面は、JIS B 0659-1:2002附属書1(参考) 比較用表面粗さ標準片の表2に規定される、最大高さ粗さ(Rzの呼び値)が1.6μmである。コーナーR2.0mm、稜線R1.0mm)を用いて、押さえ圧(面圧)0.25MPa、成形深さ5mmで冷間成形(引き込み1段成形)を行った。このとき、雄型側に熱融着性樹脂層側が位置するよう、雌型上に上記試験短冊片を載置して成形をおこなった。次に、成形部の上から、もう1枚の短冊片の熱融着性樹脂層側を重ね合わせ、周縁で対向する熱融着性樹脂層同士を熱融着させて成形部を封止した。このとき、周縁で互いに対向する熱融着性樹脂層の間には、図1に示されるようにして、タブ300及びタブフィルム310を2組と、弁装置200を介在させて、熱融着させることで周縁接合部を形成して、弁装置付き包装体のサンプルを作成した。なお、正極のタブはアルミニウム箔、負極のタブはCuNiメッキタブであり、それぞれ、厚み0.1mm、長さ30mm、幅30mmで、バリア層と同じクロメート処理がなされている。また、タブフィルムは、無水マレイン酸変性ポリプロピレンフィルム(厚さ100μm)である。熱融着の条件は、面圧1.0MPa、温度190℃、シール時間30秒間とし、シール幅は4mmとした。弁装置は面圧0.5MPa、温度200℃、シール時間5秒、シール幅は4mmとした。 <Preparation of packaging sample with valve device>
The obtained packaging material was cut into strips having a length (MD) of 120 mm and a width (TD) of 110 mm. The MD of the packaging material corresponds to the rolling direction (RD) of the aluminum alloy foil, and the TD of the packaging material corresponds to the TD of the aluminum alloy foil. One strip was subjected to cold forming such that the heat-fusible resin layer side became a concave portion to form a formed portion having a length (MD) of 110 mm, a width (TD) of 100 mm and a depth of 5 mm. Specifically, this strip is placed in a 25 ° C. environment at a rectangular molding die (female die, the surface of which is JIS B 0659-) having a length (MD) of 110 mm × width (TD) of 100 mm. 1: 2002 Annex 1 (Reference) The maximum height roughness (nominal value of Rz) is 3.2 μm as specified in Table 2 of the standard surface roughness standard piece, corner R2.0 mm, ridge R1.0 mm. ) And the corresponding molding die (male mold, surface is JIS B 0659-1: 2002 Annex 1 (reference), maximum height roughness specified in Table 2 of standard surface roughness standard piece for comparison) (Nominal value of Rz) is 1.6 μm. Using a corner R of 2.0 mm and a ridgeline of R 1.0 mm), cold forming (pressing pressure (surface pressure) 0.25 MPa, forming depth 5 mm) and cold forming (drawing one-step forming). Was done. At this time, the test strip was placed on the female mold and molded so that the heat-fusible resin layer side was located on the male mold side. Next, the heat-fusible resin layer side of another strip piece was overlapped from above the molded portion, and the heat-fusible resin layers facing each other at the peripheral edge were thermally fused to seal the molded portion. . At this time, as shown in FIG. 1, two sets of thetab 300 and the tab film 310 and the valve device 200 are interposed between the heat-fusible resin layers facing each other on the peripheral edge, and the heat-sealing resin layers are interposed. By doing so, a peripheral joint portion was formed, and a sample of the package with the valve device was prepared. The tab of the positive electrode is an aluminum foil, and the tab of the negative electrode is a CuNi-plated tab, each having a thickness of 0.1 mm, a length of 30 mm, and a width of 30 mm, and subjected to the same chromate treatment as the barrier layer. The tab film is a maleic anhydride-modified polypropylene film (100 μm in thickness). The conditions of the heat fusion were a surface pressure of 1.0 MPa, a temperature of 190 ° C., a sealing time of 30 seconds, and a sealing width of 4 mm. The valve device had a surface pressure of 0.5 MPa, a temperature of 200 ° C., a sealing time of 5 seconds, and a sealing width of 4 mm.
得られた包装材料を長さ(MD)120mm×幅(TD)110mmの短冊片に裁断した。なお、包装材料のMDが、アルミニウム合金箔の圧延方向(RD)に対応し、包装材料のTDが、アルミニウム合金箔のTDに対応する。1枚の短冊片について、熱融着性樹脂層側が凹部となるようにして冷間成形を行い、長さ(MD)110mm×幅(TD)100mm×深さ5mmの成形部を形成した。具体的には、この短冊片を25℃の環境下にて、長さ(MD)110mm×幅(TD)100mmの口径を有する矩形状の成形金型(雌型、表面は、JIS B 0659-1:2002附属書1(参考) 比較用表面粗さ標準片の表2に規定される、最大高さ粗さ(Rzの呼び値)が3.2μmである。コーナーR2.0mm、稜線R1.0mm)と、これに対応した成形金型(雄型、表面は、JIS B 0659-1:2002附属書1(参考) 比較用表面粗さ標準片の表2に規定される、最大高さ粗さ(Rzの呼び値)が1.6μmである。コーナーR2.0mm、稜線R1.0mm)を用いて、押さえ圧(面圧)0.25MPa、成形深さ5mmで冷間成形(引き込み1段成形)を行った。このとき、雄型側に熱融着性樹脂層側が位置するよう、雌型上に上記試験短冊片を載置して成形をおこなった。次に、成形部の上から、もう1枚の短冊片の熱融着性樹脂層側を重ね合わせ、周縁で対向する熱融着性樹脂層同士を熱融着させて成形部を封止した。このとき、周縁で互いに対向する熱融着性樹脂層の間には、図1に示されるようにして、タブ300及びタブフィルム310を2組と、弁装置200を介在させて、熱融着させることで周縁接合部を形成して、弁装置付き包装体のサンプルを作成した。なお、正極のタブはアルミニウム箔、負極のタブはCuNiメッキタブであり、それぞれ、厚み0.1mm、長さ30mm、幅30mmで、バリア層と同じクロメート処理がなされている。また、タブフィルムは、無水マレイン酸変性ポリプロピレンフィルム(厚さ100μm)である。熱融着の条件は、面圧1.0MPa、温度190℃、シール時間30秒間とし、シール幅は4mmとした。弁装置は面圧0.5MPa、温度200℃、シール時間5秒、シール幅は4mmとした。 <Preparation of packaging sample with valve device>
The obtained packaging material was cut into strips having a length (MD) of 120 mm and a width (TD) of 110 mm. The MD of the packaging material corresponds to the rolling direction (RD) of the aluminum alloy foil, and the TD of the packaging material corresponds to the TD of the aluminum alloy foil. One strip was subjected to cold forming such that the heat-fusible resin layer side became a concave portion to form a formed portion having a length (MD) of 110 mm, a width (TD) of 100 mm and a depth of 5 mm. Specifically, this strip is placed in a 25 ° C. environment at a rectangular molding die (female die, the surface of which is JIS B 0659-) having a length (MD) of 110 mm × width (TD) of 100 mm. 1: 2002 Annex 1 (Reference) The maximum height roughness (nominal value of Rz) is 3.2 μm as specified in Table 2 of the standard surface roughness standard piece, corner R2.0 mm, ridge R1.0 mm. ) And the corresponding molding die (male mold, surface is JIS B 0659-1: 2002 Annex 1 (reference), maximum height roughness specified in Table 2 of standard surface roughness standard piece for comparison) (Nominal value of Rz) is 1.6 μm. Using a corner R of 2.0 mm and a ridgeline of R 1.0 mm), cold forming (pressing pressure (surface pressure) 0.25 MPa, forming depth 5 mm) and cold forming (drawing one-step forming). Was done. At this time, the test strip was placed on the female mold and molded so that the heat-fusible resin layer side was located on the male mold side. Next, the heat-fusible resin layer side of another strip piece was overlapped from above the molded portion, and the heat-fusible resin layers facing each other at the peripheral edge were thermally fused to seal the molded portion. . At this time, as shown in FIG. 1, two sets of the
また、タブ300が位置する周縁の熱融着に使用するシールバーとしては、タブ300が位置する箇所に切り欠き(200μm)が設けられることで、タブ300の上に位置する熱融着性樹脂層が大きく押し潰されることが抑制されている。同様に、弁装置200が位置する周縁の熱融着に使用するシールバーとしては、弁装置200のシール取付け部220が位置する箇所の形状が、シール取付け部220の形状に沿うように加工されており、シール取付け部220の上に位置する熱融着性樹脂層が大きく押し潰されることが抑制されている。
A notch (200 μm) is provided at a position where the tab 300 is located as a seal bar used for heat fusion of a peripheral edge where the tab 300 is located, so that a heat-fusible resin located on the tab 300 is located. The layer is suppressed from being significantly crushed. Similarly, as a seal bar used for heat fusion of the periphery where the valve device 200 is located, the shape of the location where the seal mounting portion 220 of the valve device 200 is located is processed so as to conform to the shape of the seal mounting portion 220. As a result, the heat-fusible resin layer located on the seal attachment portion 220 is suppressed from being significantly crushed.
弁装置200は、図30に示されるようなサイズ及び外観を有しており、弁機構はボールスプリング型であって、作動圧がスプリング(バネ)によって調整されている。シール取付け部220(長さ5.0mm、曲面部220aの外径φ2.5mm、通気口の内径φ1.2mm)はポリプロピレン樹脂、弁機能部210(長さ13.0mm、外径φ6.0mm)はステンレス鋼(SUS304)により構成した。弁装置が開放される一次側と二次側の差圧(開放圧力)は、これらの弁装置付き包装体サンプルにおいて、収容体の弁装置が開放される一次側と二次側の差圧(開放圧力、25℃環境)は、実施例1は0.1MPa、比較例1は0.65MPa、比較例2は0.8MPaに設定した。
The valve device 200 has the size and appearance as shown in FIG. 30, the valve mechanism is a ball spring type, and the operating pressure is adjusted by a spring (spring). The seal mounting part 220 (length 5.0 mm, outer diameter φ 2.5 mm of the curved surface part 220 a, inner diameter φ 1.2 mm of the vent) is a polypropylene resin, and the valve function part 210 (length 13.0 mm, outer diameter φ 6.0 mm) Was made of stainless steel (SUS304). The differential pressure (opening pressure) between the primary side and the secondary side at which the valve device is opened is the differential pressure (opening pressure) between the primary side and the secondary side at which the valve device of the container is opened in these package samples with the valve device. (Opening pressure, 25 ° C. environment) Example 1 was set to 0.1 MPa, Comparative Example 1 was set to 0.65 MPa, and Comparative Example 2 was set to 0.8 MPa.
<破袋内圧の確認>
得られた弁装置付き包装体サンプルの弁装置から弁機能を除去して通気路として試験サンプルとした。5mmの間隔をあけて、試験サンプルの上下にステンレス板(厚さ10mm)を設置した。次に、80℃の環境に置き、通気路から包装体の内部に空気を送り込み、包装体が破袋するまで内圧を0.01MPaずつ上昇させて包装体を膨らませ、破袋した内圧を包装体の破袋内圧とした。その結果、破袋内圧は、0.8MPaであった。 <Confirmation of internal pressure of break bag>
A valve function was removed from the valve device of the obtained package body sample with a valve device to make a test sample as an air passage. Stainless steel plates (thickness: 10 mm) were placed above and below the test sample at intervals of 5 mm. Next, the package is placed in an environment of 80 ° C., air is blown into the inside of the package from the ventilation path, the internal pressure is increased by 0.01 MPa until the package breaks, and the package is inflated. Of the bag. As a result, the internal pressure of the bag was 0.8 MPa.
得られた弁装置付き包装体サンプルの弁装置から弁機能を除去して通気路として試験サンプルとした。5mmの間隔をあけて、試験サンプルの上下にステンレス板(厚さ10mm)を設置した。次に、80℃の環境に置き、通気路から包装体の内部に空気を送り込み、包装体が破袋するまで内圧を0.01MPaずつ上昇させて包装体を膨らませ、破袋した内圧を包装体の破袋内圧とした。その結果、破袋内圧は、0.8MPaであった。 <Confirmation of internal pressure of break bag>
A valve function was removed from the valve device of the obtained package body sample with a valve device to make a test sample as an air passage. Stainless steel plates (thickness: 10 mm) were placed above and below the test sample at intervals of 5 mm. Next, the package is placed in an environment of 80 ° C., air is blown into the inside of the package from the ventilation path, the internal pressure is increased by 0.01 MPa until the package breaks, and the package is inflated. Of the bag. As a result, the internal pressure of the bag was 0.8 MPa.
<開放試験>
前記の弁装置付き包装体の各サンプルの製造の際に、弁装置を取り付けた辺に対向する辺(図1のB側)に、もう1つの弁装置(ただし、弁機能を除去して通気路としたもの)を取り付けたこと以外は、各サンプルと同様にして、開放試験用の試験サンプルを作製した。得られた試験サンプルを、使用環境を模したステンレス板(厚み10mm)が5mmの間隔を空けて固定された枠内に挿入した。次に、25℃の環境において、通気路とした弁装置から空気を送り込んで内圧を増加させ、弁装置からガスが放出された後の収容体の外観と、以下の方法によって測定される収容体の最大ひずみXとを確認した。結果を表1に示す。なお、上記ステンレス板の使用有無については、想定される使用環境に応じて適宜選定できる。例えば包装体が製品の筐体の空間に設置される場合には、例えばステンレス板同士の間隔を5mm以上に設定しても良いし、実際の筐体に設置して試験しても良い。また、周辺に障害物が無いような空間での使用が想定される場合にはステンレス板を使用する必要はない。 <Open test>
At the time of manufacturing each sample of the package with the valve device, another valve device (provided that the valve function is removed and ventilation is performed) is provided on the side (the side B in FIG. 1) opposite to the side on which the valve device is attached. A test sample for an open test was produced in the same manner as in each sample except that a road was used. The obtained test sample was inserted into a frame to which a stainless steel plate (thickness: 10 mm) imitating the use environment was fixed at an interval of 5 mm. Next, in an environment of 25 ° C., the internal pressure is increased by injecting air from a valve device serving as a ventilation path, and the appearance of the container after gas is released from the valve device and the container measured by the following method Was confirmed as the maximum strain X. Table 1 shows the results. The use or non-use of the stainless steel plate can be appropriately selected according to the assumed use environment. For example, when the package is installed in the space of the housing of the product, for example, the interval between the stainless steel plates may be set to 5 mm or more, or it may be installed in an actual housing and tested. When it is assumed that the device is used in a space where there are no obstacles in the vicinity, it is not necessary to use a stainless steel plate.
前記の弁装置付き包装体の各サンプルの製造の際に、弁装置を取り付けた辺に対向する辺(図1のB側)に、もう1つの弁装置(ただし、弁機能を除去して通気路としたもの)を取り付けたこと以外は、各サンプルと同様にして、開放試験用の試験サンプルを作製した。得られた試験サンプルを、使用環境を模したステンレス板(厚み10mm)が5mmの間隔を空けて固定された枠内に挿入した。次に、25℃の環境において、通気路とした弁装置から空気を送り込んで内圧を増加させ、弁装置からガスが放出された後の収容体の外観と、以下の方法によって測定される収容体の最大ひずみXとを確認した。結果を表1に示す。なお、上記ステンレス板の使用有無については、想定される使用環境に応じて適宜選定できる。例えば包装体が製品の筐体の空間に設置される場合には、例えばステンレス板同士の間隔を5mm以上に設定しても良いし、実際の筐体に設置して試験しても良い。また、周辺に障害物が無いような空間での使用が想定される場合にはステンレス板を使用する必要はない。 <Open test>
At the time of manufacturing each sample of the package with the valve device, another valve device (provided that the valve function is removed and ventilation is performed) is provided on the side (the side B in FIG. 1) opposite to the side on which the valve device is attached. A test sample for an open test was produced in the same manner as in each sample except that a road was used. The obtained test sample was inserted into a frame to which a stainless steel plate (thickness: 10 mm) imitating the use environment was fixed at an interval of 5 mm. Next, in an environment of 25 ° C., the internal pressure is increased by injecting air from a valve device serving as a ventilation path, and the appearance of the container after gas is released from the valve device and the container measured by the following method Was confirmed as the maximum strain X. Table 1 shows the results. The use or non-use of the stainless steel plate can be appropriately selected according to the assumed use environment. For example, when the package is installed in the space of the housing of the product, for example, the interval between the stainless steel plates may be set to 5 mm or more, or it may be installed in an actual housing and tested. When it is assumed that the device is used in a space where there are no obstacles in the vicinity, it is not necessary to use a stainless steel plate.
<最大ひずみXの測定>
収容体の最大ひずみXは次のようにして測定した。まず、最大ひずみXの測定対象とする同一の包装体を2つ用意した。次に、それぞれ、包装体の外表面(すなわち、収容体の外表面)に、1mm間隔で格子状に線を引いた。このとき、2つの包装体の外表面に引く線の位置は同じとした。次に、一方の包装体について、弁装置から弁機能を除去して通気路とし、試験サンプルを、使用環境を模したステンレス板(厚み10mm)が5mmの間隔を空けて固定された枠内に挿入した後、通気路から包装体の内部に空気を送り込み、内圧を1MPaまで上昇させて包装体を膨らませた。次に、通気路から空気を除いて常圧とし、前記の格子状の線に沿って、包装体を切断し、断面の厚みを測定した。空気を送り込まなかった包装体についても、前記の格子状の線に沿って、包装体を切断し、断面の厚みを測定した。次に、空気を送り込まなかった包装体の同じ位置での厚みを基準として、厚みが最も薄くなっていた部分を最大ひずみ箇所とし、最大ひずみ箇所における厚みの減少割合(%)を最大ひずみX(%)とした。上記ステンレス板の使用有無については、想定される使用環境に応じて適宜選定できる。例えば包装体が製品の筐体の空間に設置される場合には、例えばステンレス板同士の間隔を5mm以上に設定しても良いし、実際の筐体に設置して試験しても良い。また、周辺に障害物が無いような空間での使用が想定される場合にはステンレス板を使用する必要はない。 <Measurement of maximum strain X>
The maximum strain X of the container was measured as follows. First, two identical packages to be measured for the maximum strain X were prepared. Next, lines were drawn in a grid pattern at 1 mm intervals on the outer surface of the package (that is, the outer surface of the container). At this time, the positions of the lines drawn on the outer surfaces of the two packages were the same. Next, for one package, the valve function was removed from the valve device to form a ventilation path, and the test sample was placed in a frame in which stainless plates (thickness 10 mm) simulating the use environment were fixed at intervals of 5 mm. After the insertion, air was sent into the inside of the package from the ventilation path, and the internal pressure was increased to 1 MPa to expand the package. Next, the air was removed from the air passage, and the pressure was reduced to normal pressure. The package was cut along the lattice-shaped line, and the thickness of the cross section was measured. With respect to the package to which air was not supplied, the package was cut along the above-mentioned grid-like line, and the thickness of the cross section was measured. Next, based on the thickness of the package at the same position of the air-introduced package, the portion having the smallest thickness is defined as the maximum strain point, and the reduction rate (%) of the thickness at the maximum strain point is defined as the maximum strain X ( %). The use or non-use of the stainless steel plate can be appropriately selected according to the assumed use environment. For example, when the package is installed in the space of the housing of the product, for example, the interval between the stainless steel plates may be set to 5 mm or more, or it may be installed in an actual housing and tested. When it is assumed that the device is used in a space where there are no obstacles in the vicinity, it is not necessary to use a stainless steel plate.
収容体の最大ひずみXは次のようにして測定した。まず、最大ひずみXの測定対象とする同一の包装体を2つ用意した。次に、それぞれ、包装体の外表面(すなわち、収容体の外表面)に、1mm間隔で格子状に線を引いた。このとき、2つの包装体の外表面に引く線の位置は同じとした。次に、一方の包装体について、弁装置から弁機能を除去して通気路とし、試験サンプルを、使用環境を模したステンレス板(厚み10mm)が5mmの間隔を空けて固定された枠内に挿入した後、通気路から包装体の内部に空気を送り込み、内圧を1MPaまで上昇させて包装体を膨らませた。次に、通気路から空気を除いて常圧とし、前記の格子状の線に沿って、包装体を切断し、断面の厚みを測定した。空気を送り込まなかった包装体についても、前記の格子状の線に沿って、包装体を切断し、断面の厚みを測定した。次に、空気を送り込まなかった包装体の同じ位置での厚みを基準として、厚みが最も薄くなっていた部分を最大ひずみ箇所とし、最大ひずみ箇所における厚みの減少割合(%)を最大ひずみX(%)とした。上記ステンレス板の使用有無については、想定される使用環境に応じて適宜選定できる。例えば包装体が製品の筐体の空間に設置される場合には、例えばステンレス板同士の間隔を5mm以上に設定しても良いし、実際の筐体に設置して試験しても良い。また、周辺に障害物が無いような空間での使用が想定される場合にはステンレス板を使用する必要はない。 <Measurement of maximum strain X>
The maximum strain X of the container was measured as follows. First, two identical packages to be measured for the maximum strain X were prepared. Next, lines were drawn in a grid pattern at 1 mm intervals on the outer surface of the package (that is, the outer surface of the container). At this time, the positions of the lines drawn on the outer surfaces of the two packages were the same. Next, for one package, the valve function was removed from the valve device to form a ventilation path, and the test sample was placed in a frame in which stainless plates (thickness 10 mm) simulating the use environment were fixed at intervals of 5 mm. After the insertion, air was sent into the inside of the package from the ventilation path, and the internal pressure was increased to 1 MPa to expand the package. Next, the air was removed from the air passage, and the pressure was reduced to normal pressure. The package was cut along the lattice-shaped line, and the thickness of the cross section was measured. With respect to the package to which air was not supplied, the package was cut along the above-mentioned grid-like line, and the thickness of the cross section was measured. Next, based on the thickness of the package at the same position of the air-introduced package, the portion having the smallest thickness is defined as the maximum strain point, and the reduction rate (%) of the thickness at the maximum strain point is defined as the maximum strain X ( %). The use or non-use of the stainless steel plate can be appropriately selected according to the assumed use environment. For example, when the package is installed in the space of the housing of the product, for example, the interval between the stainless steel plates may be set to 5 mm or more, or it may be installed in an actual housing and tested. When it is assumed that the device is used in a space where there are no obstacles in the vicinity, it is not necessary to use a stainless steel plate.
表1に示される結果から明らかな通り、収容体の内部の圧力が上昇し、弁装置から収容体の内部のガスが外部に放出された後の収容体の最大ひずみXが30%未満に設定された実施例1では、弁装置付き包装体の内部で発生したガスによって内部の圧力が上昇した場合に、ガスの放出後の収容体(すなわち外装材)に大きな皺が形成されたり、形状が大きく変形するの形状が大きく変化する前の適切なタイミングで、弁装置からガスが外部に放出されることが分かる。
As is evident from the results shown in Table 1, the maximum strain X of the container after the pressure inside the container increases and the gas inside the container is released to the outside from the valve device is set to less than 30%. In the first embodiment, when the internal pressure is increased by the gas generated inside the package with the valve device, a large wrinkle is formed in the container (ie, the exterior material) after the gas is released, or the shape is reduced. It can be seen that the gas is released from the valve device to the outside at an appropriate timing before the shape of the large deformation largely changes.
即ち、本開示は、下記に掲げる態様の発明を提供する。
項1. 少なくとも、基材層、バリア層及び熱融着性樹脂層をこの順に有する積層体によって構成されており、内容物を内部に収容する、収容体と、
前記収容体の内部と連通する弁装置とを備え、
前記弁装置は、前記収容体の内部において発生したガスに起因して前記収容体の内部の圧力が上昇した場合に該圧力を低下させるように構成されており、
前記収容体の内部の圧力が上昇し、前記弁装置から前記収容体の内部のガスが外部に放出された後の前記収容体の厚み方向の最大ひずみが30%未満である、弁装置付き包装体。
項2. 前記弁装置は、前記弁装置の一次側と二次側の差圧が0.015MPa以上0.6MPa以下の範囲内で、前記弁装置が開放されるように設定されている、項1に記載の弁装置付き包装体。
項3. 前記弁装置が、逆止弁である、項1又は2に記載の弁装置付き包装体。
項4. 前記弁装置は、
前記収容体の内部において発生したガスに起因して前記収容体の内部の圧力が上昇した場合に該圧力を低下させる弁機構と、
前記収容体の内部において発生したガスを前記弁機構へ誘導する通気路とを含み、
前記通気路は、ガスを透過し、液体の透過を抑制するメンブレンを備えている、項1から項3のいずれか1項に記載の弁装置付き包装体。
項5. 前記メンブレンが、ポリテトラフルオロエチレンメンブレンである、項1から項4のいずれか1項に記載の弁装置付き包装体。
項6. 前記収容体の周縁においては、前記熱融着性樹脂層が対向しており、
前記収容体の前記周縁には、対向する前記熱融着性樹脂層が互いに融着した周縁接合部が形成されており、
前記弁装置の少なくとも一部が、前記周縁接合部において互いに対向している前記熱融着性樹脂層の間に挟まれていることにより、前記弁装置は前記収容体に取り付けられており、
前記弁装置は、
前記収容体の内部において発生したガスに起因して前記収容体の内部の圧力が上昇した場合に該圧力を低下させる弁機構が内部に形成された第1部分と、
前記収容体の内部において発生したガスを前記弁機構へ誘導する通気路が内部に形成された第2部分とを含み、
前記第1部分は、前記周縁接合部の端縁よりも外側に位置しており、
前記第2部分の少なくとも一部は、前記周縁接合部において前記熱融着性樹脂層に挟まれている、項1から項5のいずれか1項に記載の弁装置付き包装体。
項7. 前記包装体の厚み方向において、前記第1部分の長さは前記第2部分の長さよりも長く、
前記第1部分と前記第2部分との境界には段差が形成されている、項6に記載の弁装置付き包装体。
項8. 前記包装体の幅方向における前記第2部分の長さは、前記包装体の厚み方向における前記第2部分の長さよりも長い、項6から項7に記載の弁装置付き包装体。
項9. 前記第2部分は、前記包装体の幅方向の端部に近づくほど薄く形成された翼状延端部を有する、項6から項8のいずれか1項に記載の弁装置付き包装体。
項10. 前記通気路の断面形状は円形である、項6から項9のいずれか1項に記載の弁装置付き包装体。
項11. 前記包装体の幅方向における前記通気路の断面の長さは、前記包装体の厚み方向における前記通気路の断面の長さよりも長い、項6から項10のいずれか1項に記載の弁装置付き包装体。
項12. 前記第2部分は、前記通気路内に形成されたピラーを有する、項6から項11のいずれか1項に記載の弁装置付き包装体。
項13. 前記第2部分の外表面はナシ地である、項6から項12のいずれか1項に記載の弁装置付き包装体。
項14. 前記第2部分の外表面には、周方向に延びる凸条部が少なくとも1つ形成されている、項6から項12のいずれか1項に記載の弁装置付き包装体。
項15. 前記第2部分において、前記第1部分側とは反対側の端部の平面視における角が丸みを帯びている、項6から項14のいずれか1項に記載の弁装置付き包装体。
項16. 前記通気路の中心線を法線とする前記第2部分の断面の外形が多角形であり、
前記多角形の角が丸みを帯びている、項6から項15のいずれか1項に記載の弁装置付き包装体。
項17. 前記第1及び第2部分の各々は異なる材料で構成されており、
前記第1部分の材料の融点は、前記第2部分の材料の融点よりも高い、項6から項16のいずれか1項に記載の弁装置付き包装体。
項18. 前記第1及び第2部分の少なくとも一方の外表面の少なくとも一部に平面が形成されている、項6から項17のいずれか1項に記載の弁装置付き包装体。
項19. 蓄電デバイス素子と、
少なくとも、基材層、バリア層及び熱融着性樹脂層をこの順に有する積層体によって構成されており、前記蓄電デバイス素子を内部に収容する、収容体と、
前記収容体の内部と連通する弁装置とを備え、
前記弁装置は、前記収容体の内部において発生したガスに起因して前記収容体の内部の圧力が上昇した場合に該圧力を低下させるように構成されており、
前記収容体の内部の圧力が上昇し、前記弁装置から前記収容体の内部のガスが外部に放出された後の前記収容体の厚み方向の最大ひずみが30%未満である、蓄電デバイス。
項20. 蓄電デバイス素子と、
少なくとも、基材層、バリア層及び熱融着性樹脂層をこの順に有する積層体によって構成されており、前記蓄電デバイス素子を内部に収容する、収容体と、
前記収容体の内部と連通する弁装置とを備え、
前記収容体の周縁においては、前記熱融着性樹脂層が対向しており、
前記収容体の前記周縁には、対向する前記熱融着性樹脂層が互いに融着した周縁接合部が形成されており、
前記弁装置の少なくとも一部が、前記周縁接合部において互いに対向している前記熱融着性樹脂層の間に挟まれていることにより、前記弁装置は前記収容体に取り付けられており、
前記弁装置は、前記収容体の内部において発生したガスに起因して前記収容体の内部の圧力が上昇した場合に該圧力を低下させるように構成されており、
前記収容体の内部の圧力が上昇し、前記弁装置から前記収容体の内部のガスが外部に放出された後の前記収容体の厚み方向の最大ひずみが30%未満である、蓄電デバイス。 That is, the present disclosure provides the following aspects of the invention.
Item 1. At least, a base body, a barrier layer and a heat-fusible resin layer are constituted by a laminate having in this order, the contents are stored inside, a container,
A valve device communicating with the inside of the container,
The valve device is configured to reduce the pressure when the pressure inside the container increases due to gas generated inside the container,
A package with a valve device, wherein the maximum strain in the thickness direction of the container after the pressure inside the container increases and the gas inside the container is released from the valve device to the outside is less than 30%. body.
Item 2. Item 2. The valve device according toItem 1, wherein the differential pressure between the primary side and the secondary side of the valve device is set so that the valve device is opened within a range of 0.015 MPa or more and 0.6 MPa or less. Package with valve device.
Item 3. Item 3. The package with a valve device according toItem 1 or 2, wherein the valve device is a check valve.
Item 4. The valve device includes:
A valve mechanism for reducing the pressure when the pressure inside the container increases due to gas generated inside the container,
An air passage for guiding gas generated inside the container to the valve mechanism,
Item 4. The package with a valve device according to any one ofItems 1 to 3, wherein the ventilation path includes a membrane that transmits gas and suppresses transmission of liquid.
Item 5. Item 5. The package with a valve device according to any one ofItems 1 to 4, wherein the membrane is a polytetrafluoroethylene membrane.
Item 6. At the periphery of the container, the heat-fusible resin layer faces,
On the peripheral edge of the container, a peripheral joint portion where the opposed heat-fusible resin layers are fused to each other is formed,
At least a portion of the valve device is sandwiched between the heat-fusible resin layers facing each other at the peripheral joint portion, so that the valve device is attached to the container,
The valve device includes:
A first portion formed therein with a valve mechanism that reduces the pressure when the pressure inside the container increases due to gas generated inside the container;
A second portion having an air passage formed therein for guiding a gas generated inside the container to the valve mechanism,
The first portion is located outside an edge of the peripheral joint,
Item 6. The package with a valve device according to any one ofItems 1 to 5, wherein at least a part of the second portion is sandwiched between the heat-fusible resin layers at the peripheral joining portion.
Item 7. In the thickness direction of the package, the length of the first portion is longer than the length of the second portion,
Item 7. The package with a valve device according to Item 6, wherein a step is formed at a boundary between the first portion and the second portion.
Item 8. Item 8. The package with a valve device according to claim 6, wherein a length of the second portion in a width direction of the package is longer than a length of the second portion in a thickness direction of the package.
Item 9. Item 9. The package with a valve device according to any one of Items 6 to 8, wherein the second portion has a wing-shaped extending end portion that is formed thinner as approaching an end portion in the width direction of the package.
Item 10. Item 10. The package with a valve device according to any one of Items 6 to 9, wherein a cross-sectional shape of the ventilation path is circular.
Item 11. The valve device according to any one of Items 6 to 10, wherein a length of a cross section of the ventilation path in a width direction of the package is longer than a length of a cross section of the ventilation path in a thickness direction of the package. With packaging.
Item 12. Item 12. The package with a valve device according to any one of Items 6 to 11, wherein the second portion has a pillar formed in the ventilation path.
Item 13. Item 13. The package with a valve device according to any one of Items 6 to 12, wherein an outer surface of the second portion is a pear ground.
Item 14. Item 13. The package with a valve device according to any one of Items 6 to 12, wherein at least one ridge extending in a circumferential direction is formed on an outer surface of the second portion.
Item 15. Item 15. The package with a valve device according to any one of Items 6 to 14, wherein, in the second portion, an end of the end opposite to the first portion has a rounded corner in plan view.
Item 16. The outer shape of the cross section of the second portion having the center line of the ventilation path as a normal line is a polygon,
Item 16. The package with a valve device according to any one of Items 6 to 15, wherein corners of the polygon are rounded.
Item 17. Each of the first and second portions is made of a different material,
Item 17. The package with a valve device according to any one of Items 6 to 16, wherein the melting point of the material of the first portion is higher than the melting point of the material of the second portion.
Item 18. Item 18. The package with a valve device according to any one of Items 6 to 17, wherein a flat surface is formed on at least a part of an outer surface of at least one of the first and second portions.
Item 19. A power storage device element,
At least, a base body, a barrier layer and a heat-fusible resin layer are configured by a laminate having in this order, the power storage device element is housed inside, a housing,
A valve device communicating with the inside of the container,
The valve device is configured to reduce the pressure when the pressure inside the container increases due to gas generated inside the container,
The power storage device, wherein the maximum strain in the thickness direction of the container after the pressure inside the container increases and the gas inside the container is released from the valve device to the outside is less than 30%.
Item 20. A power storage device element,
At least, a base body, a barrier layer and a heat-fusible resin layer are configured by a laminate having in this order, the power storage device element is housed inside, a housing,
A valve device communicating with the inside of the container,
At the periphery of the container, the heat-fusible resin layer faces,
On the peripheral edge of the container, a peripheral joint portion where the opposed heat-fusible resin layers are fused to each other is formed,
At least a portion of the valve device is sandwiched between the heat-fusible resin layers facing each other at the peripheral joint portion, so that the valve device is attached to the container,
The valve device is configured to reduce the pressure when the pressure inside the container increases due to gas generated inside the container,
The power storage device, wherein the maximum strain in the thickness direction of the container after the pressure inside the container increases and the gas inside the container is released from the valve device to the outside is less than 30%.
項1. 少なくとも、基材層、バリア層及び熱融着性樹脂層をこの順に有する積層体によって構成されており、内容物を内部に収容する、収容体と、
前記収容体の内部と連通する弁装置とを備え、
前記弁装置は、前記収容体の内部において発生したガスに起因して前記収容体の内部の圧力が上昇した場合に該圧力を低下させるように構成されており、
前記収容体の内部の圧力が上昇し、前記弁装置から前記収容体の内部のガスが外部に放出された後の前記収容体の厚み方向の最大ひずみが30%未満である、弁装置付き包装体。
項2. 前記弁装置は、前記弁装置の一次側と二次側の差圧が0.015MPa以上0.6MPa以下の範囲内で、前記弁装置が開放されるように設定されている、項1に記載の弁装置付き包装体。
項3. 前記弁装置が、逆止弁である、項1又は2に記載の弁装置付き包装体。
項4. 前記弁装置は、
前記収容体の内部において発生したガスに起因して前記収容体の内部の圧力が上昇した場合に該圧力を低下させる弁機構と、
前記収容体の内部において発生したガスを前記弁機構へ誘導する通気路とを含み、
前記通気路は、ガスを透過し、液体の透過を抑制するメンブレンを備えている、項1から項3のいずれか1項に記載の弁装置付き包装体。
項5. 前記メンブレンが、ポリテトラフルオロエチレンメンブレンである、項1から項4のいずれか1項に記載の弁装置付き包装体。
項6. 前記収容体の周縁においては、前記熱融着性樹脂層が対向しており、
前記収容体の前記周縁には、対向する前記熱融着性樹脂層が互いに融着した周縁接合部が形成されており、
前記弁装置の少なくとも一部が、前記周縁接合部において互いに対向している前記熱融着性樹脂層の間に挟まれていることにより、前記弁装置は前記収容体に取り付けられており、
前記弁装置は、
前記収容体の内部において発生したガスに起因して前記収容体の内部の圧力が上昇した場合に該圧力を低下させる弁機構が内部に形成された第1部分と、
前記収容体の内部において発生したガスを前記弁機構へ誘導する通気路が内部に形成された第2部分とを含み、
前記第1部分は、前記周縁接合部の端縁よりも外側に位置しており、
前記第2部分の少なくとも一部は、前記周縁接合部において前記熱融着性樹脂層に挟まれている、項1から項5のいずれか1項に記載の弁装置付き包装体。
項7. 前記包装体の厚み方向において、前記第1部分の長さは前記第2部分の長さよりも長く、
前記第1部分と前記第2部分との境界には段差が形成されている、項6に記載の弁装置付き包装体。
項8. 前記包装体の幅方向における前記第2部分の長さは、前記包装体の厚み方向における前記第2部分の長さよりも長い、項6から項7に記載の弁装置付き包装体。
項9. 前記第2部分は、前記包装体の幅方向の端部に近づくほど薄く形成された翼状延端部を有する、項6から項8のいずれか1項に記載の弁装置付き包装体。
項10. 前記通気路の断面形状は円形である、項6から項9のいずれか1項に記載の弁装置付き包装体。
項11. 前記包装体の幅方向における前記通気路の断面の長さは、前記包装体の厚み方向における前記通気路の断面の長さよりも長い、項6から項10のいずれか1項に記載の弁装置付き包装体。
項12. 前記第2部分は、前記通気路内に形成されたピラーを有する、項6から項11のいずれか1項に記載の弁装置付き包装体。
項13. 前記第2部分の外表面はナシ地である、項6から項12のいずれか1項に記載の弁装置付き包装体。
項14. 前記第2部分の外表面には、周方向に延びる凸条部が少なくとも1つ形成されている、項6から項12のいずれか1項に記載の弁装置付き包装体。
項15. 前記第2部分において、前記第1部分側とは反対側の端部の平面視における角が丸みを帯びている、項6から項14のいずれか1項に記載の弁装置付き包装体。
項16. 前記通気路の中心線を法線とする前記第2部分の断面の外形が多角形であり、
前記多角形の角が丸みを帯びている、項6から項15のいずれか1項に記載の弁装置付き包装体。
項17. 前記第1及び第2部分の各々は異なる材料で構成されており、
前記第1部分の材料の融点は、前記第2部分の材料の融点よりも高い、項6から項16のいずれか1項に記載の弁装置付き包装体。
項18. 前記第1及び第2部分の少なくとも一方の外表面の少なくとも一部に平面が形成されている、項6から項17のいずれか1項に記載の弁装置付き包装体。
項19. 蓄電デバイス素子と、
少なくとも、基材層、バリア層及び熱融着性樹脂層をこの順に有する積層体によって構成されており、前記蓄電デバイス素子を内部に収容する、収容体と、
前記収容体の内部と連通する弁装置とを備え、
前記弁装置は、前記収容体の内部において発生したガスに起因して前記収容体の内部の圧力が上昇した場合に該圧力を低下させるように構成されており、
前記収容体の内部の圧力が上昇し、前記弁装置から前記収容体の内部のガスが外部に放出された後の前記収容体の厚み方向の最大ひずみが30%未満である、蓄電デバイス。
項20. 蓄電デバイス素子と、
少なくとも、基材層、バリア層及び熱融着性樹脂層をこの順に有する積層体によって構成されており、前記蓄電デバイス素子を内部に収容する、収容体と、
前記収容体の内部と連通する弁装置とを備え、
前記収容体の周縁においては、前記熱融着性樹脂層が対向しており、
前記収容体の前記周縁には、対向する前記熱融着性樹脂層が互いに融着した周縁接合部が形成されており、
前記弁装置の少なくとも一部が、前記周縁接合部において互いに対向している前記熱融着性樹脂層の間に挟まれていることにより、前記弁装置は前記収容体に取り付けられており、
前記弁装置は、前記収容体の内部において発生したガスに起因して前記収容体の内部の圧力が上昇した場合に該圧力を低下させるように構成されており、
前記収容体の内部の圧力が上昇し、前記弁装置から前記収容体の内部のガスが外部に放出された後の前記収容体の厚み方向の最大ひずみが30%未満である、蓄電デバイス。 That is, the present disclosure provides the following aspects of the invention.
A valve device communicating with the inside of the container,
The valve device is configured to reduce the pressure when the pressure inside the container increases due to gas generated inside the container,
A package with a valve device, wherein the maximum strain in the thickness direction of the container after the pressure inside the container increases and the gas inside the container is released from the valve device to the outside is less than 30%. body.
Item 2. Item 2. The valve device according to
Item 3. Item 3. The package with a valve device according to
Item 4. The valve device includes:
A valve mechanism for reducing the pressure when the pressure inside the container increases due to gas generated inside the container,
An air passage for guiding gas generated inside the container to the valve mechanism,
Item 4. The package with a valve device according to any one of
Item 5. Item 5. The package with a valve device according to any one of
Item 6. At the periphery of the container, the heat-fusible resin layer faces,
On the peripheral edge of the container, a peripheral joint portion where the opposed heat-fusible resin layers are fused to each other is formed,
At least a portion of the valve device is sandwiched between the heat-fusible resin layers facing each other at the peripheral joint portion, so that the valve device is attached to the container,
The valve device includes:
A first portion formed therein with a valve mechanism that reduces the pressure when the pressure inside the container increases due to gas generated inside the container;
A second portion having an air passage formed therein for guiding a gas generated inside the container to the valve mechanism,
The first portion is located outside an edge of the peripheral joint,
Item 6. The package with a valve device according to any one of
Item 7. In the thickness direction of the package, the length of the first portion is longer than the length of the second portion,
Item 7. The package with a valve device according to Item 6, wherein a step is formed at a boundary between the first portion and the second portion.
Item 8. Item 8. The package with a valve device according to claim 6, wherein a length of the second portion in a width direction of the package is longer than a length of the second portion in a thickness direction of the package.
Item 9. Item 9. The package with a valve device according to any one of Items 6 to 8, wherein the second portion has a wing-shaped extending end portion that is formed thinner as approaching an end portion in the width direction of the package.
Item 10. Item 10. The package with a valve device according to any one of Items 6 to 9, wherein a cross-sectional shape of the ventilation path is circular.
Item 11. The valve device according to any one of Items 6 to 10, wherein a length of a cross section of the ventilation path in a width direction of the package is longer than a length of a cross section of the ventilation path in a thickness direction of the package. With packaging.
Item 12. Item 12. The package with a valve device according to any one of Items 6 to 11, wherein the second portion has a pillar formed in the ventilation path.
Item 13. Item 13. The package with a valve device according to any one of Items 6 to 12, wherein an outer surface of the second portion is a pear ground.
Item 14. Item 13. The package with a valve device according to any one of Items 6 to 12, wherein at least one ridge extending in a circumferential direction is formed on an outer surface of the second portion.
Item 15. Item 15. The package with a valve device according to any one of Items 6 to 14, wherein, in the second portion, an end of the end opposite to the first portion has a rounded corner in plan view.
Item 16. The outer shape of the cross section of the second portion having the center line of the ventilation path as a normal line is a polygon,
Item 16. The package with a valve device according to any one of Items 6 to 15, wherein corners of the polygon are rounded.
Item 17. Each of the first and second portions is made of a different material,
Item 17. The package with a valve device according to any one of Items 6 to 16, wherein the melting point of the material of the first portion is higher than the melting point of the material of the second portion.
Item 18. Item 18. The package with a valve device according to any one of Items 6 to 17, wherein a flat surface is formed on at least a part of an outer surface of at least one of the first and second portions.
Item 19. A power storage device element,
At least, a base body, a barrier layer and a heat-fusible resin layer are configured by a laminate having in this order, the power storage device element is housed inside, a housing,
A valve device communicating with the inside of the container,
The valve device is configured to reduce the pressure when the pressure inside the container increases due to gas generated inside the container,
The power storage device, wherein the maximum strain in the thickness direction of the container after the pressure inside the container increases and the gas inside the container is released from the valve device to the outside is less than 30%.
Item 20. A power storage device element,
At least, a base body, a barrier layer and a heat-fusible resin layer are configured by a laminate having in this order, the power storage device element is housed inside, a housing,
A valve device communicating with the inside of the container,
At the periphery of the container, the heat-fusible resin layer faces,
On the peripheral edge of the container, a peripheral joint portion where the opposed heat-fusible resin layers are fused to each other is formed,
At least a portion of the valve device is sandwiched between the heat-fusible resin layers facing each other at the peripheral joint portion, so that the valve device is attached to the container,
The valve device is configured to reduce the pressure when the pressure inside the container increases due to gas generated inside the container,
The power storage device, wherein the maximum strain in the thickness direction of the container after the pressure inside the container increases and the gas inside the container is released from the valve device to the outside is less than 30%.
10 弁装置付き包装体、31 基材層、32 接着剤層、33 バリア層、33a 結晶粒、34 接着層、35 熱融着性樹脂層、40,40I,41,41I 翼状延端部、50,51 ピラー、60 凸条部、100 収容体、110,110K,120 包装材料、112 成形部、114,114K フランジ部、116K 弁装置配置部、130 周縁接合部、200,200A、200B,200C,200D,200E,200F,200G,200H,200I,200J 弁装置、210,210A、210B,210C,210E,210F,210G,210H,210I,210J 弁機能部、212 弁座、214 ボール、216 バネ、218 メンブレン、220,220A、220B,220C,220D,220E,220F,220G,220H,220I,220J シール取付け部、300 タブ、310 タブフィルム、400 内容物、A1,A2,A3,A4,A5,A6,A7 通気路、C1 中心線、O1 排気口。
10 package with valve device, 31 base layer, 32 adhesive layer, 33 barrier layer, 33a crystal grain, 34 adhesive layer, 35 heat-fusible resin layer, 40, 40I, 41, 41I winged end, 50 , 51 pillar, 60 ridge, 100 container, 110, 110K, 120 packaging material, 112 molding, 114, 114K flange, 116K valve device arrangement, 130 peripheral joint, 200, 200A, 200B, 200C, 200D, 200E, 200F, 200G, 200H, 200I, 200J {Valve device, 210, 210A, 210B, 210C, 210E, 210F, 210G, 210H, 210I, 210J} Valve function part, 212 {Seat, 214} Ball, 216} Spring, 218 Membrane, 220, 220A, 220B, 220C, 20D, 220E, 220F, 220G, 220H, 220I, 220J {seal mounting part, 300} tab, 310 {tab film, 400} contents, A1, A2, A3, A4, A5, A6, A7 ventilation path, C1 center line, O1 exhaust mouth.
Claims (17)
- 蓄電デバイス素子と、
少なくとも、基材層、バリア層及び熱融着性樹脂層をこの順に有する積層体によって構成されており、前記蓄電デバイス素子を内部に収容する、収容体と、
前記収容体の内部と連通する弁装置とを備える弁装置付き包装体からなる蓄電デバイスであって、
前記基材層の厚さは3μm以上50μm以下であり、
前記バリア層の厚さは30μm以上100μm以下であり、
前記熱融着性樹脂層の厚さは15μm以上90μm以下であり、
前記積層体の厚さは50μm以上250μm以下であり、
前記収容体の周縁においては、前記熱融着性樹脂層が対向しており、
前記収容体の前記周縁には、対向する前記熱融着性樹脂層が互いに融着した周縁接合部が形成されており、
前記弁装置の少なくとも一部が、前記周縁接合部において互いに対向している前記熱融着性樹脂層の間に挟まれていることにより、前記弁装置は前記収容体に取り付けられており、
前記弁装置は、前記収容体の内部において発生したガスに起因して前記収容体の内部の圧力が上昇した場合に該圧力を低下させるように構成されており、
前記弁装置は、前記弁装置の一次側と二次側の差圧が0.015MPa以上0.6MPa以下の範囲内で、前記弁装置が開放されるように設定されており、
前記弁装置は、逆止弁であり、
前記弁装置は、
前記収容体の内部において発生したガスに起因して前記収容体の内部の圧力が上昇した場合に該圧力を低下させる弁機構が内部に形成された第1部分と、
前記収容体の内部において発生したガスを前記弁機構へ誘導する通気路が内部に形成された第2部分とを含み、
前記第1部分は、前記周縁接合部の端縁よりも外側に位置しており、
前記第2部分の少なくとも一部は、前記周縁接合部において前記熱融着性樹脂層に挟まれており、
前記収容体の内部の圧力が上昇し、前記弁装置から前記収容体の内部のガスが外部に放出された後の前記収容体の厚み方向の最大ひずみが30%未満である、蓄電デバイス。 A power storage device element,
At least, a base body, a barrier layer and a heat-fusible resin layer are configured by a laminate having in this order, the power storage device element is housed inside, a housing,
A power storage device including a valve device-equipped packaging body including a valve device that communicates with the inside of the housing,
The thickness of the substrate layer is 3 μm or more and 50 μm or less,
The thickness of the barrier layer is 30 μm or more and 100 μm or less,
The thickness of the heat-fusible resin layer is 15 μm or more and 90 μm or less,
The thickness of the laminate is 50 μm or more and 250 μm or less,
At the periphery of the container, the heat-fusible resin layer faces,
On the peripheral edge of the container, a peripheral joint portion where the opposed heat-fusible resin layers are fused to each other is formed,
At least a portion of the valve device is sandwiched between the heat-fusible resin layers facing each other at the peripheral joint portion, so that the valve device is attached to the container,
The valve device is configured to reduce the pressure when the pressure inside the container increases due to gas generated inside the container,
The valve device is set so that the differential pressure between the primary side and the secondary side of the valve device is in a range of 0.015 MPa or more and 0.6 MPa or less, and the valve device is opened,
The valve device is a check valve,
The valve device includes:
A first portion formed therein with a valve mechanism that reduces the pressure when the pressure inside the container increases due to gas generated inside the container;
A second portion having an air passage formed therein for guiding a gas generated inside the container to the valve mechanism,
The first portion is located outside an edge of the peripheral joint,
At least a part of the second portion is sandwiched between the heat-fusible resin layers at the peripheral joining portion,
The power storage device, wherein the maximum strain in the thickness direction of the container after the pressure inside the container increases and the gas inside the container is released from the valve device to the outside is less than 30%. - 80℃の環境において、前記弁装置の弁機能を閉塞させて、前記収容体の内部の圧力を上昇させた場合に、前記収容体が破裂する際の前記収容体の内部の圧力が、0.3MPa以上1MPa以下の範囲である、請求項1に記載の蓄電デバイス。 In an environment of 80 ° C., when the valve function of the valve device is closed to increase the pressure inside the container, the pressure inside the container when the container ruptures is reduced to 0. The power storage device according to claim 1, wherein the power storage device has a range of 3 MPa to 1 MPa.
- 前記弁装置は、
前記収容体の内部において発生したガスに起因して前記収容体の内部の圧力が上昇した場合に該圧力を低下させる弁機構と、
前記収容体の内部において発生したガスを前記弁機構へ誘導する通気路とを含み、
前記通気路は、ガスを透過し、液体の透過を抑制するメンブレンを備えている、請求項1または請求項2に記載の蓄電デバイス。 The valve device includes:
A valve mechanism for reducing the pressure when the pressure inside the container increases due to gas generated inside the container,
An air passage for guiding gas generated inside the container to the valve mechanism,
The power storage device according to claim 1, wherein the ventilation path includes a membrane that transmits gas and suppresses liquid transmission. - 前記メンブレンが、ポリテトラフルオロエチレンメンブレンである、請求項3に記載の蓄電デバイス。 The electrical storage device according to claim 3, wherein the membrane is a polytetrafluoroethylene membrane.
- 前記包装体の厚み方向において、前記第1部分の長さは前記第2部分の長さよりも長く、
前記第1部分と前記第2部分との境界には段差が形成されている、請求項1から請求項4のいずれか1項に記載の蓄電デバイス。 In the thickness direction of the package, the length of the first portion is longer than the length of the second portion,
The power storage device according to any one of claims 1 to 4, wherein a step is formed at a boundary between the first portion and the second portion. - 前記包装体の幅方向における前記第2部分の長さは、前記包装体の厚み方向における前記第2部分の長さよりも長い、請求項1から請求項5のいずれか1項に記載の蓄電デバイス。 The power storage device according to claim 1, wherein a length of the second portion in a width direction of the package is longer than a length of the second portion in a thickness direction of the package. .
- 前記第2部分は、前記包装体の幅方向の端部に近づくほど薄く形成された翼状延端部を有する、請求項1から請求項6のいずれか1項に記載の蓄電デバイス。 The power storage device according to any one of claims 1 to 6, wherein the second portion has a wing-like extending end portion that is formed thinner toward an end portion in the width direction of the package.
- 前記通気路の断面形状は円形である、請求項1から請求項7のいずれか1項に記載の蓄電デバイス。 The power storage device according to any one of claims 1 to 7, wherein the cross-sectional shape of the ventilation path is circular.
- 前記包装体の幅方向における前記通気路の断面の長さは、前記包装体の厚み方向における前記通気路の断面の長さよりも長い、請求項1から請求項8のいずれか1項に記載の蓄電デバイス。 9. The package according to claim 1, wherein a length of a cross section of the air passage in a width direction of the package is longer than a length of a cross section of the air passage in a thickness direction of the package. 10. Power storage device.
- 前記第2部分は、前記通気路内に形成されたピラーを有する、請求項1から請求項9のいずれか1項に記載の蓄電デバイス。 The power storage device according to any one of claims 1 to 9, wherein the second portion has a pillar formed in the ventilation path.
- 前記第2部分の外表面はナシ地である、請求項1から請求項10のいずれか1項に記載の蓄電デバイス。 The power storage device according to any one of claims 1 to 10, wherein the outer surface of the second portion is a pear ground.
- 前記第2部分の外表面には、周方向に延びる凸条部が少なくとも1つ形成されている、請求項1から請求項10のいずれか1項に記載の蓄電デバイス。 The power storage device according to any one of claims 1 to 10, wherein at least one ridge extending in a circumferential direction is formed on an outer surface of the second portion.
- 前記第2部分において、前記第1部分側とは反対側の端部の平面視における角が丸みを帯びている、請求項1から請求項12のいずれか1項に記載の蓄電デバイス。 The power storage device according to any one of claims 1 to 12, wherein, in the second portion, an end of the end opposite to the first portion has a rounded corner in plan view.
- 前記通気路の中心線を法線とする前記第2部分の断面の外形が多角形であり、
前記多角形の角が丸みを帯びている、請求項1から請求項13のいずれか1項に記載の蓄電デバイス。 The outer shape of the cross section of the second portion having the center line of the ventilation path as a normal line is a polygon,
The power storage device according to any one of claims 1 to 13, wherein corners of the polygon are rounded. - 前記第1及び第2部分の各々は異なる材料で構成されており、
前記第1部分の材料の融点は、前記第2部分の材料の融点よりも高い、請求項1から請求項14のいずれか1項に記載の蓄電デバイス。 Each of the first and second portions is made of a different material,
The power storage device according to any one of claims 1 to 14, wherein a melting point of the material of the first portion is higher than a melting point of the material of the second portion. - 前記第1及び第2部分の少なくとも一方の外表面の少なくとも一部に平面が形成されている、請求項1から請求項15のいずれか1項に記載の蓄電デバイス。 The power storage device according to any one of claims 1 to 15, wherein a plane is formed on at least a part of an outer surface of at least one of the first and second portions.
- 蓄電デバイス素子と、
少なくとも、基材層、バリア層及び熱融着性樹脂層をこの順に有する積層体によって構成されており、前記蓄電デバイス素子を内部に収容する、収容体と、
前記収容体の内部と連通する弁装置とを備え、
前記基材層の厚さは3μm以上50μm以下であり、
前記バリア層の厚さは30μm以上100μm以下であり、
前記熱融着性樹脂層の厚さは15μm以上90μm以下であり、
前記積層体の厚さは50μm以上250μm以下であり、
前記収容体の周縁においては、前記熱融着性樹脂層が対向しており、
前記収容体の前記周縁には、対向する前記熱融着性樹脂層が互いに融着した周縁接合部が形成されており、
前記弁装置の少なくとも一部が、前記周縁接合部において互いに対向している前記熱融着性樹脂層の間に挟まれていることにより、前記弁装置は前記収容体に取り付けられており、
前記弁装置は、前記収容体の内部において発生したガスに起因して前記収容体の内部の圧力が上昇した場合に該圧力を低下させるように構成されており、
前記弁装置は、前記弁装置の一次側と二次側の差圧が0.015MPa以上0.6MPa以下の範囲内で、前記弁装置が開放されるように設定されており、
前記弁装置は、逆止弁であり、
前記収容体の内部の圧力が上昇し、前記弁装置から前記収容体の内部のガスが外部に放出された後の前記収容体の厚み方向の最大ひずみが30%未満である、蓄電デバイス。 A power storage device element,
At least, a base body, a barrier layer and a heat-fusible resin layer are configured by a laminate having in this order, the power storage device element is housed inside, a housing,
A valve device communicating with the inside of the container,
The thickness of the substrate layer is 3 μm or more and 50 μm or less,
The thickness of the barrier layer is 30 μm or more and 100 μm or less,
The thickness of the heat-fusible resin layer is 15 μm or more and 90 μm or less,
The thickness of the laminate is 50 μm or more and 250 μm or less,
At the periphery of the container, the heat-fusible resin layer faces,
On the peripheral edge of the container, a peripheral joint portion where the opposed heat-fusible resin layers are fused to each other is formed,
At least a portion of the valve device is sandwiched between the heat-fusible resin layers facing each other at the peripheral joint portion, so that the valve device is attached to the container,
The valve device is configured to reduce the pressure when the pressure inside the container increases due to gas generated inside the container,
The valve device is set so that the differential pressure between the primary side and the secondary side of the valve device is in a range of 0.015 MPa or more and 0.6 MPa or less, and the valve device is opened,
The valve device is a check valve,
The power storage device, wherein the maximum strain in the thickness direction of the container after the pressure inside the container increases and the gas inside the container is released from the valve device to the outside is less than 30%.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018-179524 | 2018-09-25 | ||
JP2018179524A JP7206745B2 (en) | 2018-09-25 | 2018-09-25 | Package with valve device and power storage device |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2020067131A1 true WO2020067131A1 (en) | 2020-04-02 |
Family
ID=69951380
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2019/037535 WO2020067131A1 (en) | 2018-09-25 | 2019-09-25 | Power storage device |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP7206745B2 (en) |
WO (1) | WO2020067131A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220320635A1 (en) * | 2021-03-30 | 2022-10-06 | Lg Energy Solution, Ltd. | Pouch-Type Secondary Battery and Battery Module Having the Same |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6239170B2 (en) * | 1978-08-09 | 1987-08-21 | Matsushita Electric Works Ltd | |
JPS6359731B2 (en) * | 1983-06-29 | 1988-11-21 | ||
JP2012156489A (en) * | 2011-01-06 | 2012-08-16 | Mitsubishi Electric Corp | Storage element |
KR20150061996A (en) * | 2013-11-28 | 2015-06-05 | 주식회사 엘지화학 | Battery cell and Secondary battery assembly comprising the same |
JP2017076510A (en) * | 2015-10-14 | 2017-04-20 | 昭和電工パッケージング株式会社 | Sealant film for exterior package material of power storage device, exterior package material for power storage device, power storage device, and method for manufacturing resin composition for sealant film of power storage device exterior package material |
WO2017135361A1 (en) * | 2016-02-03 | 2017-08-10 | 凸版印刷株式会社 | Exterior material for power storage device and method for manufacturing exterior material for power storage device |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3772436B2 (en) * | 1997-01-29 | 2006-05-10 | ハジー技研株式会社 | Mounting structure of hollow accessories to the sheet that becomes the container |
JP2004067183A (en) * | 2002-08-07 | 2004-03-04 | Dainippon Printing Co Ltd | Assembly of container and holder |
JP2009029514A (en) * | 2007-06-26 | 2009-02-12 | Dainippon Printing Co Ltd | Pouch container |
JP5332450B2 (en) * | 2008-09-25 | 2013-11-06 | 大日本印刷株式会社 | Pouch container |
JP4436925B1 (en) * | 2009-10-30 | 2010-03-24 | 株式会社アシスト | Check valve and sealing bag, and check valve and sealing bag manufacturing method |
JP6265532B2 (en) * | 2014-02-03 | 2018-01-24 | 株式会社細川洋行 | Bag body with pouring tool |
JP2018024472A (en) * | 2016-07-29 | 2018-02-15 | フジモリプラケミカル株式会社 | Gazette bag body for forming gazette bag with spout |
JP6239170B1 (en) * | 2017-03-16 | 2017-11-29 | 丸天産業株式会社 | Gas vent valve |
JP6359731B1 (en) * | 2017-07-04 | 2018-07-18 | 株式会社柏原製袋 | Bags with bag closure valves and food deaeration bags |
-
2018
- 2018-09-25 JP JP2018179524A patent/JP7206745B2/en active Active
-
2019
- 2019-09-25 WO PCT/JP2019/037535 patent/WO2020067131A1/en active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6239170B2 (en) * | 1978-08-09 | 1987-08-21 | Matsushita Electric Works Ltd | |
JPS6359731B2 (en) * | 1983-06-29 | 1988-11-21 | ||
JP2012156489A (en) * | 2011-01-06 | 2012-08-16 | Mitsubishi Electric Corp | Storage element |
KR20150061996A (en) * | 2013-11-28 | 2015-06-05 | 주식회사 엘지화학 | Battery cell and Secondary battery assembly comprising the same |
JP2017076510A (en) * | 2015-10-14 | 2017-04-20 | 昭和電工パッケージング株式会社 | Sealant film for exterior package material of power storage device, exterior package material for power storage device, power storage device, and method for manufacturing resin composition for sealant film of power storage device exterior package material |
WO2017135361A1 (en) * | 2016-02-03 | 2017-08-10 | 凸版印刷株式会社 | Exterior material for power storage device and method for manufacturing exterior material for power storage device |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220320635A1 (en) * | 2021-03-30 | 2022-10-06 | Lg Energy Solution, Ltd. | Pouch-Type Secondary Battery and Battery Module Having the Same |
Also Published As
Publication number | Publication date |
---|---|
JP7206745B2 (en) | 2023-01-18 |
JP2020053178A (en) | 2020-04-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6604414B1 (en) | Power storage device | |
WO2019230742A1 (en) | Battery | |
JP6540871B1 (en) | STORAGE DEVICE VALVE DEVICE AND STORAGE DEVICE | |
WO2019230743A1 (en) | Battery, heat seal device, and method of manufacturing battery | |
JP2024045178A (en) | Valve device for power storage device and power storage device | |
WO2020067130A1 (en) | Valve device for power storage device, and power storage device | |
WO2020067131A1 (en) | Power storage device | |
JP6530850B1 (en) | battery | |
WO2019230744A1 (en) | Battery | |
JP7187927B2 (en) | storage device | |
JP6530847B1 (en) | battery | |
WO2019230745A1 (en) | Battery | |
JP6530849B1 (en) | battery | |
JP6530848B1 (en) | Battery, heat seal apparatus, and method of manufacturing battery |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 19866375 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 19866375 Country of ref document: EP Kind code of ref document: A1 |