WO2023127956A1 - Matériau de boîtier pour dispositif de stockage d'énergie, procédé de fabrication de matériau de boîtier et dispositif de stockage d'énergie - Google Patents

Matériau de boîtier pour dispositif de stockage d'énergie, procédé de fabrication de matériau de boîtier et dispositif de stockage d'énergie Download PDF

Info

Publication number
WO2023127956A1
WO2023127956A1 PCT/JP2022/048622 JP2022048622W WO2023127956A1 WO 2023127956 A1 WO2023127956 A1 WO 2023127956A1 JP 2022048622 W JP2022048622 W JP 2022048622W WO 2023127956 A1 WO2023127956 A1 WO 2023127956A1
Authority
WO
WIPO (PCT)
Prior art keywords
storage device
layer
exterior material
resin
electricity storage
Prior art date
Application number
PCT/JP2022/048622
Other languages
English (en)
Japanese (ja)
Inventor
紘基 阿久津
美帆 佐々木
Original Assignee
大日本印刷株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 大日本印刷株式会社 filed Critical 大日本印刷株式会社
Priority to JP2023552595A priority Critical patent/JP7444341B2/ja
Publication of WO2023127956A1 publication Critical patent/WO2023127956A1/fr

Links

Images

Classifications

    • 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
    • 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
    • H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
    • 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/117—Inorganic material
    • H01M50/119—Metals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/121—Organic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
    • H01M50/126—Primary casings; Jackets or wrappings characterised by the material having a layered structure comprising three or more layers
    • H01M50/129—Primary casings; Jackets or wrappings characterised by the material having a layered structure comprising three or more layers with two or more layers of only organic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/131—Primary casings; Jackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
    • 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
    • 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
    • H01M50/147—Lids or covers
    • H01M50/148—Lids or covers characterised by their shape
    • H01M50/15—Lids or covers characterised by their shape for prismatic or rectangular cells
    • 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
    • H01M50/147—Lids or covers
    • H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
    • H01M50/169—Lids or covers characterised by the methods of assembling casings with lids by welding, brazing or soldering
    • 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 an exterior material for an electricity storage device, a manufacturing method thereof, and an electricity storage device.
  • the exterior 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.
  • Laminates have been proposed (see Patent Document 1, for example).
  • a power storage device exterior material In such a power storage device exterior material, generally, recesses are formed by cold molding using a mold, and power storage device elements such as electrodes and electrolytes are arranged in the spaces formed by the recesses. By heat-sealing the heat-fusible resin layer, an electricity storage device in which the electricity storage device element is housed inside the exterior material for an electricity storage device can be obtained. In order to further increase the energy density of the electricity storage device, it is necessary to form deeper recesses in the exterior material. Also, when the size of the electric storage device is increased, it is necessary to form a deeper concave portion.
  • the main purpose of the present disclosure is to provide an exterior material for an electricity storage device that has excellent drop impact resistance.
  • the exterior material for an electric storage device which is composed of a laminate including, in order from the outside, at least an impact-resistant layer, a resin film layer, a barrier layer, and a heat-fusible resin layer, has excellent drop impact resistance. I found out.
  • An exterior material for an electricity storage device comprising a laminate comprising, in order from the outside, at least an impact-resistant layer, a resin film layer, a barrier layer, and a heat-fusible resin layer.
  • an exterior material for an electricity storage device that exhibits excellent drop impact resistance. Further, according to the present disclosure, it is also possible to provide a method for manufacturing the exterior material for an electricity storage device, and an electricity storage device using the exterior material for an electricity storage device.
  • FIG. 1 is a schematic diagram showing an example of a cross-sectional structure of an exterior material for an electricity storage device of the present disclosure
  • FIG. 1 is a schematic diagram showing an example of a cross-sectional structure of an exterior material for an electricity storage device of the present disclosure
  • BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram showing an example of a cross-sectional structure of an exterior material for an electricity storage device of the present disclosure
  • FIG. 1 is a schematic diagram for explaining an example (gable top type) of the shape of an electricity storage device of the present disclosure;
  • FIG. 1 is a schematic diagram showing an example of a cross-sectional structure of an exterior material for an electricity storage device of the present disclosure
  • FIG. 1 is a schematic diagram for explaining an example (gable top type) of the shape of an electricity storage device of the present disclosure
  • FIG. 1 is a schematic diagram for explaining an example (brick pouch type) of the shape of an electricity storage device of the present disclosure
  • FIG. 1 is a schematic diagram for explaining an example of the shape of an electricity storage device of the present disclosure (a rectangular parallelepiped shape in which two lid members and one exterior member for an electricity storage device are combined).
  • FIG. 1 is a schematic diagram for explaining an example of the shape of an electricity storage device of the present disclosure (a rectangular parallelepiped shape in which two lid members and one exterior member for an electricity storage device are combined).
  • the power storage device exterior material of the present disclosure is characterized by being composed of a laminate including, in order from the outside, at least an impact-resistant layer, a resin film layer, a barrier layer, and a heat-fusible resin layer. With such a configuration, the power storage device exterior material of the present disclosure exhibits excellent drop impact resistance.
  • the numerical range indicated by "-" means “more than” and “less than”.
  • the notation of 2 to 15 mm means 2 mm or more and 15 mm or less.
  • upper or lower limits described in a certain numerical range may be replaced with upper or lower limits of other numerical ranges described step by step.
  • the upper limit and upper limit, the upper limit and lower limit, or the lower limit and lower limit, which are separately described may be combined to form a numerical range.
  • upper or lower limits described in a certain numerical range may be replaced with values shown in Examples.
  • the exterior material 10 for an electric storage device of the present disclosure includes, for example, as shown in FIGS. It is composed of a laminate having a flexible resin layer 4 in this order.
  • the shock-resistant layer 1 is the outermost layer
  • the heat-fusible resin layer 4 is the innermost layer.
  • the electricity storage device element is placed in a space formed by heat-sealing the heat-sealable resin layer of the electricity storage device exterior material 10 . be accommodated.
  • the barrier layer 3 is the reference
  • the heat-fusible resin layer 4 side is inside the barrier layer 3
  • the resin film layer 2 side is inside the barrier layer 3. outside.
  • the power storage device exterior material 10 of the present disclosure includes the shock-resistant layer 1, it is not suitable for forming recesses by molding using a mold like the conventional power storage device exterior material. do not have. For this reason, the power storage device exterior material 10 of the present disclosure is preferably used without being subjected to molding by a mold. However, a laminate comprising at least the resin film layer 2, the barrier layer 3, and the heat-fusible resin layer 4 in this order is prepared, and after molding this, the impact-resistant layer 1 is laminated on the resin film layer 2. This does not mean that a mold cannot be used to manufacture the electrical storage device exterior material 10 having recesses formed therein. Specifically, the power storage device exterior material 10 of the present disclosure is a gable top type as shown in FIG.
  • the upper and lower sides may be of the gable top type.), the brick pouch type as shown in FIG.
  • the power storage device is used so as to form a rectangular parallelepiped electricity storage device in combination with the outer packaging material 10 .
  • the electricity storage device element is accommodated in a space formed by the cylindrically formed electricity storage device exterior material 10 and two cover members 11 .
  • the power storage device element is sealed by heat-sealing the heat-sealable resin layer 4 of the power storage device exterior material 10 to the periphery.
  • the power storage device exterior material 10 is provided between the impact-resistant layer 1 and the resin film layer 2 for the purpose of improving the adhesion between these layers, if necessary.
  • an adhesive layer 6 is optionally provided between the resin film layer 2 and the barrier layer 3 for the purpose of enhancing adhesion between these layers.
  • an adhesive layer 7 is optionally provided between the barrier layer 3 and the heat-sealable resin layer 4 for the purpose of enhancing the adhesion between these layers.
  • the thickness of the laminate constituting the power storage device exterior material 10 is not particularly limited. is mentioned.
  • the thickness of the laminate constituting the power storage device exterior material 10 is preferably about 60 ⁇ m or more, about 80 ⁇ m or more, about 100 ⁇ m or more, about 150 ⁇ m or more, about 180 ⁇ m or more, and the like.
  • the preferred range of the laminate constituting the power storage device exterior material 10 is, for example, about 60 to 300 ⁇ m, about 60 to 250 ⁇ m, about 60 to 200 ⁇ m, about 60 to 190 ⁇ m, about 80 to 300 ⁇ m, and about 80 to 250 ⁇ m.
  • the impact resistant layer 1, the adhesive layer 5 provided as necessary, the resin film layer 2, and, if necessary, the thickness (total thickness) of the laminate constituting the electrical storage device exterior material 10 The ratio of the total thickness of the adhesive layer 6 provided as required, the barrier layer 3, the adhesive layer 7 provided as required, and the heat-fusible resin layer 4 is preferably 90% or more, more preferably 95%. % or more, more preferably 98% or more.
  • the power storage device exterior material 10 of the present disclosure includes an impact-resistant layer 1, an adhesive layer 5, a resin film layer 2, an adhesive layer 6, a barrier layer 3, an adhesive layer 7, and a heat-fusible resin.
  • the ratio of the total thickness of these layers to the thickness (total thickness) of the laminate constituting the power storage device exterior material 10 is preferably 90% or more, more preferably 95% or more. , more preferably 98% or more.
  • the power storage device exterior material 10 of the present disclosure is a laminate including the shock-resistant layer 1, the adhesive layer 5, the resin film layer 2, the adhesive layer 6, the barrier layer 3, and the heat-fusible resin layer 4.
  • the ratio of the total thickness of each of these layers to the thickness (total thickness) of the laminate constituting the power storage device exterior material 10 is, for example, 80% or more, preferably 90% or more, and more preferably 95% or more. , and more preferably 98% or more.
  • the impact-resistant layer 1 is a layer that functions as a cushion that imparts excellent drop impact resistance to the power storage device exterior material 10 of the present disclosure.
  • the shock-resistant layer 1 preferably constitutes the outermost layer of the power storage device exterior material 10 .
  • the impact-resistant layer 1 may be a layer that imparts impact resistance to the power storage device exterior material 10, and may be a fibrous base material such as paper, a polycarbonate-based resin, a polyimide-based resin, a polyamide-based resin, or a polyamide-imide-based material. It can be composed of resin base materials such as resins, polyester resins, polyolefin resins and polystyrene resins, and rubber base materials such as butadiene rubber and natural rubber.
  • the tensile modulus of the impact resistant layer 1 is preferably 0.1 GPa or more, more preferably 0.1 to 10 GPa.
  • the impact-resistant layer 1 is preferably a layer (fibrous base material layer) in which a base material made of fibrous material is provided in layers.
  • the fibrous base material layer is composed of, for example, paper, nonwoven fabric, woven fabric, wood material, etc., preferably paper or nonwoven fabric, and more preferably paper.
  • paper is a thin piece made by agglutinating fibers such as plants and synthetic resins, and is mainly composed of plant fibers.
  • paper containing fibrous inorganic materials is also included.
  • nonwoven fabric is a fabric made by mechanically, chemically, and thermally treating a fiber sheet without going through the form of yarn, and bonding it with an adhesive or the fusing power of the fiber itself. fiber).
  • a woven fabric is a fabric made of woven fibers.
  • Wood materials include, for example, wood veneer, plywood, laminated wood, medium-density fiberboard, hard fiberboard, and the like.
  • the material constituting the fibrous base material layer is not particularly limited, and natural fibers, synthetic fibers (chemical fibers), etc. can be used.
  • the material constituting the paper is not particularly limited. ), thermomechanical pulp (TMP), chemithermomechanical pulp (CTMP), deinked pulp (DIP), etc.
  • TMP thermomechanical pulp
  • CMP chemithermomechanical pulp
  • DIP deinked pulp
  • pulp materials derived from softwood are particularly preferred.
  • Waste paper pulp such as waste newspaper, waste magazine paper, waste corrugated board, and waste deinked paper can also be used as the pulp material.
  • the paper may contain a mixture of the pulp material and synthetic fibers such as rayon, polyamide, polyimide, polyester, polyolefin, and polyvinyl alcohol.
  • base paper for liquid paper containers is preferably exemplified.
  • the material constituting the nonwoven fabric or woven fabric is not particularly limited. chemical fibers such as vinylon and aramid fibers; and natural fibers such as cotton, wool, hemp, silk and pulp.
  • the material constituting the shock-resistant layer 1 may be of only one type, or may be of two or more types.
  • Additives such as flame retardants, antiblocking agents, antioxidants, light stabilizers, tackifiers, and antistatic agents may be present on at least one of the surface and the interior of the impact-resistant layer 1 . Only one type of additive may be used, or two or more types may be mixed and used.
  • the basis weight (basis weight) of the impact-resistant layer 1 is not particularly limited, it is preferably 100 g/m 2 or more, more preferably 150 g/m 2 or more, and more preferably 150 g/m 2 or more from the viewpoint of more suitably exhibiting the effects of the present disclosure. It is preferably 200 g/m 2 or more, more preferably 1000/m 2 or less, more preferably 600/m 2 or less , still more preferably 500/m 2 or less.
  • the adhesive layer 5 is a layer provided between the impact-resistant layer 1 and the resin film layer 2 as necessary for the purpose of increasing the adhesion between them. .
  • the adhesive layer 5 is made of an adhesive capable of bonding the impact-resistant layer 1 and the resin film layer 2 together.
  • the adhesive used to form the adhesive layer 5 is not limited, but may be any of a chemical reaction type, a solvent volatilization type, a hot melt type, a hot pressure type, and the like. Further, it may be a two-liquid curing adhesive (two-liquid adhesive), a one-liquid curing adhesive (one-liquid adhesive), or a resin that does not involve a curing reaction. Further, the adhesive layer 5 may be a single layer or multiple layers.
  • the adhesive component contained in the adhesive include polyesters such as polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polybutylene naphthalate, polyethylene isophthalate, and copolymerized polyester; polyether; polyurethane; epoxy resin; Phenolic resins; polyamides such as nylon 6, nylon 66, nylon 12, and copolymerized polyamides; polyolefin resins such as polyolefins, cyclic polyolefins, acid-modified polyolefins, and acid-modified cyclic polyolefins; polyvinyl acetate; cellulose; (meth)acrylic resins; polyimide; polycarbonate; amino resin such as urea resin and melamine resin; rubber such as chloroprene rubber, nitrile rubber and styrene-butadiene rubber; These adhesive components may be used singly or in combination of two or more.
  • polyurethane adhesives are preferred.
  • an appropriate curing agent can be used in combination with these adhesive component resins to increase the adhesive strength.
  • the curing agent is selected from among polyisocyanates, polyfunctional epoxy resins, oxazoline group-containing polymers, polyamine resins, acid anhydrides, etc., depending on the functional groups of the adhesive component.
  • polyurethane adhesives examples include polyurethane adhesives containing a first agent containing a polyol compound and a second agent containing an isocyanate compound.
  • a two-component curing type polyurethane adhesive is used in which a polyol such as polyester polyol, polyether polyol, or acrylic polyol is used as the first agent and an aromatic or aliphatic polyisocyanate is used as the second agent.
  • polyurethane adhesives include polyurethane adhesives containing an isocyanate compound and a polyurethane compound obtained by reacting a polyol compound and an isocyanate compound in advance.
  • polyurethane adhesives examples include polyurethane adhesives containing a polyurethane compound obtained by reacting a polyol compound and an isocyanate compound in advance and a polyol compound.
  • polyurethane adhesives examples include polyurethane adhesives obtained by reacting a polyurethane compound obtained by reacting a polyol compound and an isocyanate compound in advance with moisture in the air and curing the compound.
  • the polyol compound it is preferable to use a polyester polyol having a hydroxyl group in a side chain in addition to the terminal hydroxyl group of the repeating unit.
  • the second agent examples include aliphatic, alicyclic, aromatic, and araliphatic isocyanate compounds.
  • isocyanate compounds include hexamethylene diisocyanate (HDI), xylylene diisocyanate (XDI), isophorone diisocyanate (IPDI), hydrogenated XDI (H6XDI), hydrogenated MDI (H12MDI), tolylene diisocyanate (TDI), and diphenylmethane diisocyanate. (MDI), naphthalene diisocyanate (NDI), and the like.
  • polyfunctional isocyanate-modified products of one or more of these diisocyanates are also included.
  • a polymer for example, a trimer
  • Such multimers include adducts, biurets, nurates and the like. Since the adhesive layer 5 is formed of a polyurethane adhesive, the exterior material for an electric storage device is endowed with excellent electrolytic solution resistance, and peeling of the resin film layer 2 is suppressed even if the electrolytic solution adheres to the side surface. .
  • the adhesive layer 5 may contain other components as long as they do not interfere with adhesion, and may contain colorants, thermoplastic elastomers, tackifiers, fillers, and the like. Since the adhesive layer 5 contains a coloring agent, the power storage device exterior material can be colored. Known substances such as pigments and dyes can be used as the colorant. In addition, only one type of colorant may be used, or two or more types may be mixed and used.
  • the type of pigment is not particularly limited as long as it does not impair the adhesiveness of the adhesive layer 5.
  • organic pigments include azo-based, phthalocyanine-based, quinacridone-based, anthraquinone-based, dioxazine-based, indigothioindigo-based, perinone-perylene-based, isoindolenine-based, and benzimidazolone-based pigments.
  • pigments include carbon black, titanium oxide, cadmium, lead, chromium oxide, and iron pigments, as well as fine powder of mica and fish scale foil.
  • carbon black is preferable, for example, in order to make the external appearance of the exterior material for a power storage device black.
  • the average particle size of the pigment is not particularly limited, and is, for example, about 0.05 to 5 ⁇ m, preferably about 0.08 to 2 ⁇ m.
  • the average particle size of the pigment is the median size measured with a laser diffraction/scattering particle size distribution analyzer.
  • the content of the pigment in the adhesive layer 5 is not particularly limited as long as the power storage device exterior material is colored, and is, for example, about 5 to 60% by mass, preferably 10 to 40% by mass.
  • the thickness of the adhesive layer 5 is not particularly limited as long as the impact-resistant layer 1 and the resin film layer 2 can be adhered, but is, for example, about 1 ⁇ m or more, or about 2 ⁇ m or more. Moreover, the thickness of the adhesive layer 5 is, for example, about 10 ⁇ m or less, or about 5 ⁇ m or less. Moreover, the preferable range of the thickness of the adhesive layer 5 is about 1 to 10 ⁇ m, about 1 to 5 ⁇ m, about 2 to 10 ⁇ m, and about 2 to 5 ⁇ m.
  • the adhesive layer 5 is usually impregnated in the gaps of the fibrous base material layer.
  • the adhesive layer 5 is preferably not exposed in the outermost layer of the electrical storage device exterior material, and the fibrous base material layer preferably constitutes the outermost layer of the electrical storage device exterior material.
  • the resin film layer 2 is a layer provided for the purpose of exhibiting a function as a base material of an exterior material for an electric storage device.
  • the resin film layer 2 is located outside the intermediate barrier layer 3 in the exterior material for an electric storage device.
  • the material forming the resin film layer 2 is not particularly limited as long as it functions as a base material, that is, at least has insulating properties.
  • the resin film layer 2 can be formed using, for example, a resin, and the resin may contain additives described later.
  • the resin film layer 2 may be, for example, a resin film formed of resin, or may be formed by applying resin.
  • the resin film may be an unstretched film or a stretched film.
  • stretched films include uniaxially stretched films and biaxially stretched films, with biaxially stretched films being preferred.
  • stretching methods for forming a biaxially stretched film include successive biaxial stretching, inflation, and simultaneous biaxial stretching.
  • Methods for applying the resin include a roll coating method, a gravure coating method, an extrusion coating method, and the like.
  • the resin forming the resin film layer 2 examples include resins such as polyester, polyamide, polyolefin, epoxy resin, acrylic resin, fluororesin, polyurethane, silicon resin, phenolic resin, and modified products of these resins. Further, the resin forming the resin film layer 2 may be a copolymer of these resins or a modified product of the copolymer. Furthermore, it may be a mixture of these resins.
  • the resin forming the resin film layer 2 preferably includes polyester and polyamide.
  • polyester examples include polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polybutylene naphthalate, polyethylene isophthalate, and copolymerized polyester.
  • copolyester examples include copolyester having ethylene terephthalate as a main repeating unit.
  • copolymer polyester polymerized with ethylene isophthalate with ethylene terephthalate as the main repeating unit hereinafter abbreviated after polyethylene (terephthalate / isophthalate)
  • polyethylene (terephthalate / adipate) polyethylene (terephthalate / sodium sulfoisophthalate)
  • polyethylene (terephthalate/sodium isophthalate) polyethylene (terephthalate/phenyl-dicarboxylate), polyethylene (terephthalate/decanedicarboxylate), and the like.
  • These polyesters may be used singly or in combination of two or more.
  • polyamide specifically, aliphatic polyamide such as nylon 6, nylon 66, nylon 610, nylon 12, nylon 46, copolymer of nylon 6 and nylon 66; terephthalic acid and / or isophthalic acid Hexamethylenediamine-isophthalic acid-terephthalic acid copolymer polyamide such as nylon 6I, nylon 6T, nylon 6IT, nylon 6I6T (I represents isophthalic acid, T represents terephthalic acid) containing structural units derived from, polyamide MXD6 (polymetallic Polyamides containing aromatics such as silylene adipamide); alicyclic polyamides such as polyamide PACM6 (polybis(4-aminocyclohexyl)methane adipamide); Copolymerized polyamides, polyesteramide copolymers and polyetheresteramide copolymers which are copolymers of copolymerized polyamides with polyesters or polyalkylene ether glycols; and polyamides such
  • the resin film layer 2 preferably includes at least one of a polyester film, a polyamide film, and a polyolefin film, and preferably includes at least one of a stretched polyester film, a stretched polyamide film, and a stretched polyolefin film. It is more preferable to include at least one of an oriented polyethylene terephthalate film, an oriented polybutylene terephthalate film, an oriented nylon film, and an oriented polypropylene film, and a biaxially oriented polyethylene terephthalate film, a biaxially oriented polybutylene terephthalate film, and a biaxially oriented nylon film. , biaxially oriented polypropylene film.
  • the resin film layer 2 may be a single layer, or may be composed of two or more layers.
  • the resin film layer 2 may be a laminate obtained by laminating resin films with an adhesive or the like, or may be formed by co-extrusion of resin to form two or more layers. It may also be a laminate of resin films. A laminate of two or more resin films formed by coextrusion of resin may be used as the resin film layer 2 without being stretched, or may be formed as the resin film layer 2 by being uniaxially or biaxially stretched.
  • a laminate of two or more layers of resin films include a laminate of a polyester film and a nylon film, a laminate of nylon films of two or more layers, and a laminate of polyester films of two or more layers. etc., preferably a laminate of a stretched nylon film and a stretched polyester film, a laminate of two or more layers of stretched nylon films, and a laminate of two or more layers of stretched polyester films.
  • the resin film layer 2 is a laminate of two resin films, a laminate of polyester resin films and polyester resin films, a laminate of polyamide resin films and polyamide resin films, or a laminate of polyester resin films and polyamide resin films.
  • a laminate is preferred, and a laminate of polyethylene terephthalate film and polyethylene terephthalate film, a laminate of nylon film and nylon film, or a laminate of polyethylene terephthalate film and nylon film is more preferred.
  • the polyester resin is resistant to discoloration when, for example, an electrolytic solution adheres to its surface. It is preferably located in the outermost layer.
  • the two or more layers of resin films may be laminated via an adhesive.
  • Preferred adhesives are the same as those exemplified for the adhesive layer 5 described above.
  • the method for laminating two or more layers of resin films is not particularly limited, and known methods can be employed. Examples thereof include dry lamination, sandwich lamination, extrusion lamination, thermal lamination, and the like. A lamination method is mentioned.
  • the thickness of the adhesive is, for example, about 2 to 5 ⁇ m.
  • an anchor coat layer may be formed on the resin film and laminated.
  • the anchor coat layer includes the same adhesives as those exemplified for the adhesive layer 6 described later. At this time, the thickness of the anchor coat layer is, for example, about 0.01 to 1.0 ⁇ m.
  • Additives such as flame retardants, antiblocking agents, antioxidants, light stabilizers, tackifiers, and antistatic agents may be present on at least one of the surface and the interior of the resin film layer 2 . Only one type of additive may be used, or two or more types may be mixed and used.
  • the thickness of the resin film layer 2 is not particularly limited as long as it functions as a base material, but it is, for example, about 3 to 50 ⁇ m, preferably about 10 to 35 ⁇ m.
  • the thickness of each resin film constituting each layer is preferably about 2 to 25 ⁇ m.
  • the thickness of the resin film layer 2 is 25 to 35 ⁇ m. about 35 to 45 ⁇ m.
  • the adhesive layer 6 is a layer provided between the resin film layer 2 and the barrier layer 3 as necessary for the purpose of enhancing the adhesiveness between them.
  • the adhesive layer 6 is made of an adhesive capable of bonding the resin film layer 2 and the barrier layer 3 together.
  • the adhesive used to form the adhesive layer 6 is not limited, but may be any of a chemical reaction type, a solvent volatilization type, a hot melt type, a hot pressure type, and the like. Further, it may be a two-liquid curing adhesive (two-liquid adhesive), a one-liquid curing adhesive (one-liquid adhesive), or a resin that does not involve a curing reaction. Further, the adhesive layer 6 may be a single layer or multiple layers.
  • Examples of the adhesive component contained in the adhesive used to form the adhesive layer 6 are the same as those exemplified for the adhesive layer 5 .
  • the adhesive layer 6 may contain other components as long as they do not interfere with adhesion, and may contain colorants, thermoplastic elastomers, tackifiers, fillers, and the like. Since the adhesive layer 6 contains a coloring agent, the power storage device exterior material can be colored. Known substances such as pigments and dyes can be used as the colorant. In addition, only one type of colorant may be used, or two or more types may be mixed and used.
  • the type of pigment is not particularly limited as long as it does not impair the adhesiveness of the adhesive layer 6.
  • Examples of the organic pigment are the same as those exemplified for the adhesive layer.
  • carbon black is preferable, for example, in order to make the external appearance of the exterior material for an electric storage device black.
  • the average particle size of the pigment is not particularly limited, and is, for example, approximately 0.05 to 5 ⁇ m, preferably approximately 0.08 to 2 ⁇ m.
  • the average particle size of the pigment is the median size measured with a laser diffraction/scattering particle size distribution analyzer.
  • the content of the pigment in the adhesive layer 6 is not particularly limited as long as the power storage device exterior material is colored, and is, for example, about 5 to 60% by mass, preferably 10 to 40% by mass.
  • the thickness of the adhesive layer 6 is not particularly limited as long as the resin film layer 2 and the barrier layer 3 can be adhered, but is, for example, about 1 ⁇ m or more, or about 2 ⁇ m or more. Also, the thickness of the adhesive layer 6 is, for example, about 10 ⁇ m or less, or about 5 ⁇ m or less. Moreover, the preferable range of the thickness of the adhesive layer 6 is about 1 to 10 ⁇ m, about 1 to 5 ⁇ m, about 2 to 10 ⁇ m, and about 2 to 5 ⁇ m.
  • the barrier layer 3 is a layer that at least prevents permeation of moisture.
  • the barrier layer 3 examples include a metal foil, vapor deposition film, and resin layer having barrier properties.
  • vapor-deposited films include metal vapor-deposited films, inorganic oxide vapor-deposited films, and carbon-containing inorganic oxide vapor-deposited films.
  • the barrier layer 3 may also include a resin film provided with at least one of these deposited films and resin layers.
  • a plurality of barrier layers 3 may be provided.
  • the barrier layer 3 preferably includes a layer made of a metal material. Specific examples of the metal material constituting the barrier layer 3 include aluminum alloys, stainless steels, titanium steels, and steel plates. When used as metal foils, at least one of aluminum alloy foils and stainless steel foils is included. is preferred.
  • the aluminum alloy foil is more preferably a soft aluminum alloy foil made of, for example, an annealed aluminum alloy or the like, from the viewpoint of improving the drop impact resistance of the exterior material for an electricity storage device, and an aluminum alloy foil containing iron. is preferred.
  • the iron content is preferably 0.1 to 9.0% by mass, more preferably 0.5 to 2.0% by mass. When the iron content is 9.0% by mass or less, it is possible to obtain an exterior material for an electricity storage device that is more excellent in flexibility.
  • the soft aluminum alloy foil for example, an aluminum alloy having a composition specified by JIS H4160: 1994 A8021H-O, JIS H4160: 1994 A8079H-O, JIS H4000: 2014 A8021P-O, or JIS H4000: 2014 A8079P-O foil.
  • silicon, magnesium, copper, manganese, etc. may be added as needed.
  • softening can be performed by annealing treatment or the like.
  • stainless steel foils include austenitic, ferritic, austenitic/ferritic, martensitic, and precipitation hardened stainless steel foils. Furthermore, from the viewpoint of providing an exterior material for an electricity storage device having excellent drop impact resistance, the stainless steel foil is preferably made of austenitic stainless steel.
  • austenitic stainless steel that constitutes the stainless steel foil
  • SUS304 is particularly preferable.
  • the thickness of the barrier layer 3 is not particularly limited as long as it exhibits at least a function as a barrier layer that suppresses penetration of moisture, and is 40 ⁇ m or more.
  • the thickness of the barrier layer is preferably about 45 ⁇ m or more, more preferably about 50 ⁇ m or more, still more preferably about 55 ⁇ m or more, and is preferably about 200 ⁇ m or less, more preferably about 150 ⁇ m or less, and still more preferably about 100 ⁇ m or less.
  • preferable ranges are about 40 to 200 ⁇ m, about 40 to 150 ⁇ m, about 40 to 100 ⁇ m, about 40 to 65 ⁇ m, about 45 to 200 ⁇ m, about 45 to 150 ⁇ m, about 45 to 100 ⁇ m, about 45 to 65 ⁇ m, about 50 to 200 ⁇ m, about 50 to 150 ⁇ m, about 50 to 100 ⁇ m, about 50 to 65 ⁇ m, about 55 to 200 ⁇ m, about 55 to 150 ⁇ m, about 55 to 100 ⁇ m, and about 55 to 65 ⁇ m.
  • the barrier layer 3 is a metal foil
  • the barrier layer 3 may be provided with a corrosion resistant coating on both sides.
  • the corrosion-resistant film includes, for example, hydrothermal transformation treatment such as boehmite treatment, chemical conversion treatment, anodizing treatment, plating treatment such as nickel and chromium, and corrosion prevention treatment such as applying a coating agent to the surface of the barrier layer. It is a thin film that provides corrosion resistance (for example, acid resistance, alkali resistance, etc.) to the barrier layer.
  • the corrosion-resistant film specifically means a film that improves the acid resistance of the barrier layer (acid-resistant film), a film that improves the alkali resistance of the barrier layer (alkali-resistant film), and the like.
  • the treatment for forming the corrosion-resistant film one type may be performed, or two or more types may be used in combination. Also, not only one layer but also multiple layers can be used.
  • the hydrothermal transformation treatment and the anodizing treatment are treatments in which the surface of the metal foil is dissolved with a treating agent to form a metal compound having excellent corrosion resistance. These treatments are sometimes included in the definition of chemical conversion treatment.
  • the barrier layer 3 includes the corrosion-resistant film.
  • the corrosion-resistant coating prevents delamination between the barrier layer (e.g., aluminum alloy foil) and the resin film layer, and prevents dissolution and corrosion of the barrier layer surface by the hydrogen fluoride generated by the reaction between the electrolyte and moisture.
  • the barrier layer is an aluminum alloy foil, it prevents the aluminum oxide present on the barrier layer surface from dissolving and corroding, and improves the adhesiveness (wettability) of the barrier layer surface to form a resin film at the time of heat sealing.
  • the effect of preventing delamination between a layer and a barrier layer and preventing delamination between a resin film layer and a barrier layer is shown.
  • Corrosion-resistant coatings formed by chemical conversion treatment are known, and are mainly composed of at least one of phosphates, chromates, fluorides, triazinethiol compounds, and rare earth oxides.
  • Corrosion-resistant coatings containing Examples of chemical conversion treatments using phosphate and chromate include chromic acid chromate treatment, phosphoric acid chromate treatment, phosphoric acid-chromate treatment, and chromate treatment.
  • Examples of compounds include chromium nitrate, chromium fluoride, chromium sulfate, chromium acetate, chromium oxalate, chromium biphosphate, chromium acetyl acetate, chromium chloride, potassium chromium sulfate, and the like.
  • Phosphorus compounds used for these treatments include sodium phosphate, potassium phosphate, ammonium phosphate, polyphosphoric acid, and the like.
  • Examples of the chromate treatment include etching chromate treatment, electrolytic chromate treatment, coating-type chromate treatment, etc., and coating-type chromate treatment is preferred.
  • the inner layer side surface of the barrier layer (for example, aluminum alloy foil) is first subjected to a well-known method such as an alkali immersion method, an electrolytic cleaning method, an acid cleaning method, an electrolytic acid cleaning method, an acid activation method, or the like.
  • metal phosphate such as Cr (chromium) phosphate, Ti (titanium) phosphate, Zr (zirconium) phosphate, Zn (zinc) phosphate is applied to the degreased surface.
  • a processing solution mainly composed of a salt and a mixture of these metal salts a processing solution mainly composed of a non-metal phosphate salt and a mixture of these non-metal salts, or a mixture of these and a synthetic resin.
  • This is a treatment in which a treatment liquid composed of a mixture is applied by a well-known coating method such as a roll coating method, a gravure printing method, or an immersion method, and then dried.
  • Various solvents such as water, alcohol-based solvents, hydrocarbon-based solvents, ketone-based solvents, ester-based solvents, and ether-based solvents can be used as the treatment liquid, and water is preferred.
  • the resin component used at this time includes polymers such as phenolic resins and acrylic resins. and the chromate treatment used.
  • the repeating units represented by the following general formulas (1) to (4) may be contained singly or in any combination of two or more. good too.
  • the acrylic resin is polyacrylic acid, acrylic acid methacrylic acid ester copolymer, acrylic acid maleic acid copolymer, acrylic acid styrene copolymer, or derivatives thereof such as sodium salts, ammonium salts, and amine salts. is preferred.
  • derivatives of polyacrylic acid such as ammonium salt, sodium salt or amine salt of polyacrylic acid are preferred.
  • polyacrylic acid means a polymer of acrylic acid.
  • the acrylic resin is preferably a copolymer of acrylic acid and dicarboxylic acid or dicarboxylic anhydride, and the ammonium salt, sodium salt, Alternatively, it is also preferably an amine salt. Only one type of acrylic resin may be used, or two or more types may be mixed and used.
  • X represents a hydrogen atom, hydroxy group, alkyl group, hydroxyalkyl group, allyl group or benzyl group.
  • R 1 and R 2 are the same or different and represent a hydroxy group, an alkyl group or a hydroxyalkyl group.
  • alkyl groups represented by X, R 1 and R 2 in general formulas (1) to (4) include methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, A linear or branched alkyl group having 1 to 4 carbon atoms such as a tert-butyl group can be mentioned.
  • hydroxyalkyl groups represented by X, R 1 and R 2 include hydroxymethyl group, 1-hydroxyethyl group, 2-hydroxyethyl group, 1-hydroxypropyl group, 2-hydroxypropyl group, 3- A straight or branched chain having 1 to 4 carbon atoms substituted with one hydroxy group such as hydroxypropyl group, 1-hydroxybutyl group, 2-hydroxybutyl group, 3-hydroxybutyl group and 4-hydroxybutyl group An alkyl group is mentioned.
  • the alkyl groups and hydroxyalkyl groups represented by X, R 1 and R 2 may be the same or different.
  • X is preferably a hydrogen atom, a hydroxy group or a hydroxyalkyl group.
  • the number average molecular weight of the aminated phenol polymer having repeating units represented by formulas (1) to (4) is, for example, preferably about 500 to 1,000,000, more preferably about 1,000 to 20,000. more preferred.
  • the aminated phenol polymer is produced, for example, by polycondensing a phenol compound or naphthol compound and formaldehyde to produce a polymer comprising repeating units represented by the general formula (1) or general formula (3), followed by formaldehyde. and an amine (R 1 R 2 NH) to introduce a functional group (--CH 2 NR 1 R 2 ) into the polymer obtained above.
  • An aminated phenol polymer is used individually by 1 type or in mixture of 2 or more types.
  • the corrosion-resistant film is formed by a coating-type corrosion prevention treatment in which a coating agent containing at least one selected from the group consisting of rare earth element oxide sol, anionic polymer, and cationic polymer is applied.
  • a thin film that is The coating agent may further contain phosphoric acid or a phosphate, a cross-linking agent for cross-linking the polymer.
  • rare earth element oxide sol rare earth element oxide fine particles (for example, particles having an average particle size of 100 nm or less) are dispersed in a liquid dispersion medium.
  • rare earth element oxides include cerium oxide, yttrium oxide, neodymium oxide, and lanthanum oxide, and cerium oxide is preferable from the viewpoint of further improving adhesion.
  • the rare earth element oxides contained in the corrosion-resistant coating can be used singly or in combination of two or more.
  • various solvents such as water, alcohol solvents, hydrocarbon solvents, ketone solvents, ester solvents, and ether solvents can be used, with water being preferred.
  • the cationic polymer include polyethyleneimine, an ionic polymer complex composed of a polymer containing polyethyleneimine and carboxylic acid, a primary amine-grafted acrylic resin obtained by graft-polymerizing a primary amine to an acrylic backbone, polyallylamine, or a derivative thereof. , aminated phenols and the like are preferred.
  • the anionic polymer is preferably poly(meth)acrylic acid or a salt thereof, or a copolymer containing (meth)acrylic acid or a salt thereof as a main component.
  • the cross-linking agent is preferably at least one selected from the group consisting of a compound having a functional group such as an isocyanate group, a glycidyl group, a carboxyl group, or an oxazoline group, and a silane coupling agent.
  • the phosphoric acid or phosphate is preferably condensed phosphoric acid or condensed phosphate.
  • fine particles of metal oxides such as aluminum oxide, titanium oxide, cerium oxide, and tin oxide, and barium sulfate are dispersed in phosphoric acid, which is applied to the surface of the barrier layer. C. or more, and those formed by performing baking processing are mentioned.
  • the corrosion-resistant film may, if necessary, have a laminated structure in which at least one of a cationic polymer and an anionic polymer is further laminated.
  • a cationic polymer and anionic polymers include those described above.
  • the analysis of the composition of the corrosion-resistant coating can be performed using, for example, time-of-flight secondary ion mass spectrometry.
  • the amount of the corrosion-resistant film formed on the surface of the barrier layer 3 in the chemical conversion treatment is not particularly limited. is about 0.5 to 50 mg, preferably about 1.0 to 40 mg in terms of chromium, the phosphorus compound is about 0.5 to 50 mg, preferably about 1.0 to 40 mg in terms of phosphorus, and aminated phenol polymer is contained in a ratio of, for example, about 1.0 to 200 mg, preferably about 5.0 to 150 mg.
  • the thickness of the corrosion-resistant coating is not particularly limited, but is preferably about 1 nm to 20 ⁇ m, more preferably 1 nm to 100 nm, from the viewpoint of cohesion of the coating and adhesion to the barrier layer and the heat-sealable resin layer. about 1 nm to 50 nm, more preferably about 1 nm to 50 nm.
  • the thickness of the corrosion-resistant film can be measured by observation with a transmission electron microscope, or by a combination of observation with a transmission electron microscope and energy dispersive X-ray spectroscopy or electron beam energy loss spectroscopy.
  • secondary ions composed of Ce, P and O for example, at least one of Ce 2 PO 4 + and CePO 4 ⁇ species
  • secondary ions composed of Cr, P, and O eg, at least one of CrPO 2 + and CrPO 4 ⁇
  • Chemical conversion treatment involves applying a solution containing a compound used to form a corrosion-resistant film to the surface of the barrier layer by a bar coating method, roll coating method, gravure coating method, immersion method, etc. is carried out by heating so that the temperature is about 70 to 200°C.
  • the barrier layer may be previously subjected to a degreasing treatment by an alkali immersion method, an electrolytic cleaning method, an acid cleaning method, an electrolytic acid cleaning method, or the like. By performing the degreasing treatment in this way, it becomes possible to perform the chemical conversion treatment on the surface of the barrier layer more efficiently.
  • an acid degreasing agent obtained by dissolving a fluorine-containing compound in an inorganic acid for degreasing treatment it is possible to form not only the degreasing effect of the metal foil but also the passive metal fluoride. In such cases, only degreasing treatment may be performed.
  • the heat-fusible resin layer 4 corresponds to the innermost layer, and has the function of sealing the power storage device element by heat-sealing the heat-fusible resin layers to each other when assembling the power storage device. It is a layer (sealant layer) that exhibits
  • the resin constituting the heat-fusible resin layer 4 is not particularly limited as long as it is heat-fusible, but resins containing polyolefin skeletons such as polyolefins and acid-modified polyolefins are preferable.
  • the inclusion of a polyolefin skeleton in the resin constituting the heat-fusible resin layer 4 can be analyzed by, for example, infrared spectroscopy, gas chromatography-mass spectrometry, or the like. Further, when the resin constituting the heat-fusible resin layer 4 is analyzed by infrared spectroscopy, it is preferable that a peak derived from maleic anhydride is detected.
  • peaks derived from maleic anhydride are detected near wavenumbers of 1760 cm ⁇ 1 and 1780 cm ⁇ 1 .
  • the heat-fusible resin layer 4 is a layer composed of maleic anhydride-modified polyolefin
  • a peak derived from maleic anhydride is detected when measured by infrared spectroscopy.
  • the degree of acid denaturation is low, the peak may be too small to be detected. In that case, it can be analyzed by nuclear magnetic resonance spectroscopy.
  • polyolefins include polyethylenes such as low-density polyethylene, medium-density polyethylene, high-density polyethylene, and linear low-density polyethylene; ethylene- ⁇ -olefin copolymers; block copolymers of ethylene), random copolymers of polypropylene (for example, random copolymers of propylene and ethylene); propylene- ⁇ -olefin copolymers; ethylene-butene-propylene terpolymers; Among these, polypropylene is preferred.
  • the polyolefin resin is a copolymer, it may be a block copolymer or a random copolymer. These polyolefin-based resins may be used alone or in combination of two or more.
  • the polyolefin may be a cyclic polyolefin.
  • a cyclic polyolefin is a copolymer of an olefin and a cyclic monomer.
  • the olefin which is a constituent monomer of the cyclic polyolefin, include ethylene, propylene, 4-methyl-1-pentene, styrene, butadiene, and isoprene. be done.
  • Examples of cyclic monomers constituting cyclic polyolefins include cyclic alkenes such as norbornene; cyclic dienes such as cyclopentadiene, dicyclopentadiene, cyclohexadiene and norbornadiene. Among these, cyclic alkenes are preferred, and norbornene is more preferred.
  • Acid-modified polyolefin is a polymer modified by block polymerization or graft polymerization of polyolefin with an acid component.
  • the acid-modified polyolefin the above polyolefin, a copolymer obtained by copolymerizing the above polyolefin with a polar molecule such as acrylic acid or methacrylic acid, or a polymer such as crosslinked polyolefin can be used.
  • acid components used for acid modification include carboxylic acids such as maleic acid, acrylic acid, itaconic acid, crotonic acid, maleic anhydride and itaconic anhydride, and anhydrides thereof.
  • the acid-modified polyolefin may be an acid-modified cyclic polyolefin.
  • Acid-modified cyclic polyolefin is a polymer obtained by copolymerizing a part of the monomers constituting the cyclic polyolefin in place of the acid component, or by block-polymerizing or graft-polymerizing the acid component to the cyclic polyolefin. be.
  • the acid-modified cyclic polyolefin is the same as described above.
  • the acid component used for acid modification is the same as the acid component used for modification of polyolefin.
  • Preferable acid-modified polyolefins include polyolefins modified with carboxylic acid or its anhydride, polypropylene modified with carboxylic acid or its anhydride, maleic anhydride-modified polyolefin, and maleic anhydride-modified polypropylene.
  • the heat-fusible resin layer 4 may be formed of one type of resin alone, or may be formed of a blend polymer in which two or more types of resin are combined. Furthermore, the heat-fusible resin layer 4 may be formed of only one layer, or may be formed of two or more layers of the same or different resins.
  • the thickness of the heat-fusible resin layer 4 is not particularly limited as long as the heat-fusible resin layers are heat-sealed to each other to exhibit the function of sealing the electricity storage device element, but for example, it is about 100 ⁇ m or less, preferably about 100 ⁇ m or less. About 85 ⁇ m or less, more preferably about 15 to 85 ⁇ m.
  • the thickness of the heat-fusible resin layer 4 is preferably about 85 ⁇ m or less, more preferably about 15 to 45 ⁇ m.
  • the thickness of the heat-fusible resin layer 4 is preferably about 20 ⁇ m or more, more preferably 35 to 85 ⁇ m. degree.
  • the adhesive layer 7 is provided between the barrier layer 3 (or the corrosion-resistant film) and the heat-fusible resin layer 4 as necessary in order to firmly bond them. It is a layer that can be
  • the adhesive layer 7 is made of a resin capable of bonding the barrier layer 3 and the heat-fusible resin layer 4 together.
  • the resin used for forming the adhesive layer 7 for example, the same adhesives as those exemplified for the adhesive layer 6 can be used.
  • the resin used for forming the adhesive layer 7 contains a polyolefin skeleton. Polyolefins and acid-modified polyolefins exemplified for the resin layer 4 can be used.
  • the adhesive layer 7 preferably contains an acid-modified polyolefin.
  • Acid-modified components include dicarboxylic acids such as maleic acid, itaconic acid, succinic acid and adipic acid, their anhydrides, acrylic acid and methacrylic acid. Maleic acid is most preferred.
  • the olefin component is preferably a polypropylene-based resin, and the adhesive layer 7 most preferably contains maleic anhydride-modified polypropylene.
  • the resin forming the adhesive layer 7 contains a polyolefin skeleton can be analyzed by, for example, infrared spectroscopy, gas chromatography mass spectrometry, or the like, and the analysis method is not particularly limited.
  • the fact that the resin constituting the adhesive layer 7 contains an acid-modified polyolefin means that, for example, when the maleic anhydride-modified polyolefin is measured by infrared spectroscopy , anhydrous A peak derived from maleic acid is detected. However, if the degree of acid denaturation is low, the peak may be too small to be detected. In that case, it can be analyzed by nuclear magnetic resonance spectroscopy.
  • the adhesive layer 7 is preferably a cured product of a resin composition containing an acid-modified polyolefin and a curing agent. More preferred.
  • Preferred examples of the acid-modified polyolefin include those mentioned above.
  • the adhesive layer 7 is a cured product of a resin composition containing an acid-modified polyolefin and at least one selected from the group consisting of a compound having an isocyanate group, a compound having an oxazoline group, and a compound having an epoxy group.
  • a cured product of a resin composition containing an acid-modified polyolefin and at least one selected from the group consisting of a compound having an isocyanate group and a compound having an epoxy group is particularly preferred.
  • the adhesive layer 7 preferably contains at least one selected from the group consisting of polyurethane, polyester, and epoxy resin, and more preferably contains polyurethane and epoxy resin.
  • an ester resin produced by a reaction between an epoxy group and a maleic anhydride group and an amide ester resin produced by a reaction between an oxazoline group and a maleic anhydride group are preferable.
  • an unreacted product of a curing agent such as a compound having an isocyanate group, a compound having an oxazoline group, or an epoxy resin remains in the adhesive layer 7, the presence of the unreacted product can be detected by, for example, infrared spectroscopy, It can be confirmed by a method selected from Raman spectroscopy, time-of-flight secondary ion mass spectrometry (TOF-SIMS), and the like.
  • the adhesive layer 7 contains at least It is preferably a cured product of a resin composition containing one curing agent.
  • the curing agent having a heterocyclic ring includes, for example, a curing agent having an oxazoline group, a curing agent having an epoxy group, and the like.
  • the curing agent having a C ⁇ N bond includes a curing agent having an oxazoline group, a curing agent having an isocyanate group, and the like.
  • the curing agent having a C—O—C bond includes a curing agent having an oxazoline group, a curing agent having an epoxy group, and the like.
  • the adhesive layer 7 is a cured product of a resin composition containing these curing agents, for example, gas chromatography mass spectrometry (GCMS), infrared spectroscopy (IR), time-of-flight secondary ion mass spectrometry (TOF). -SIMS) and X-ray photoelectron spectroscopy (XPS).
  • GCMS gas chromatography mass spectrometry
  • IR infrared spectroscopy
  • TOF time-of-flight secondary ion mass spectrometry
  • -SIMS X-ray photoelectron spectroscopy
  • the compound having an isocyanate group is not particularly limited, but from the viewpoint of effectively increasing the adhesion between the barrier layer 3 and the adhesive layer 7, polyfunctional isocyanate compounds are preferred.
  • the polyfunctional isocyanate compound is not particularly limited as long as it is a compound having two or more isocyanate groups.
  • Specific examples of polyfunctional isocyanate curing agents include pentane diisocyanate (PDI), isophorone diisocyanate (IPDI), hexamethylene diisocyanate (HDI), tolylene diisocyanate (TDI), diphenylmethane diisocyanate (MDI), polymerization and nurate compounds, mixtures thereof, copolymers with other polymers, and the like.
  • adducts, biurets, isocyanurates and the like are included.
  • the content of the compound having an isocyanate group in the adhesive layer 7 is preferably in the range of 0.1 to 50% by mass, more preferably 0.5 to 40% by mass, in the resin composition constituting the adhesive layer 7. A range is more preferred. Thereby, the adhesion between the barrier layer 3 and the adhesive layer 7 can be effectively improved.
  • the compound having an oxazoline group is not particularly limited as long as it is a compound having an oxazoline skeleton.
  • Specific examples of compounds having an oxazoline group include those having a polystyrene main chain and those having an acrylic main chain.
  • the Epocross series by Nippon Shokubai Co., Ltd. etc. are mentioned, for example.
  • the ratio of the compound having an oxazoline group in the adhesive layer 7 is preferably in the range of 0.1 to 50% by mass, more preferably 0.5 to 40% by mass, in the resin composition constituting the adhesive layer 7. is more preferable. Thereby, the adhesion between the barrier layer 3 and the adhesive layer 7 can be effectively improved.
  • Examples of compounds having an epoxy group include epoxy resins.
  • the epoxy resin is not particularly limited as long as it is a resin capable of forming a crosslinked structure with epoxy groups present in the molecule, and known epoxy resins can be used.
  • the weight average molecular weight of the epoxy resin is preferably about 50 to 2000, more preferably about 100 to 1000, still more preferably about 200 to 800.
  • the weight average molecular weight of the epoxy resin is a value measured by gel permeation chromatography (GPC) using polystyrene as a standard sample.
  • epoxy resins include glycidyl ether derivatives of trimethylolpropane, bisphenol A diglycidyl ether, modified bisphenol A diglycidyl ether, bisphenol F-type glycidyl ether, novolac glycidyl ether, glycerin polyglycidyl ether, polyglycerin polyglycidyl ether, and the like. is mentioned.
  • An epoxy resin may be used individually by 1 type, and may be used in combination of 2 or more types.
  • the ratio of the epoxy resin in the adhesive layer 7 is preferably in the range of 0.1 to 50% by mass, more preferably in the range of 0.5 to 40% by mass, in the resin composition constituting the adhesive layer 7. is more preferred. Thereby, the adhesion between the barrier layer 3 and the adhesive layer 7 can be effectively improved.
  • the polyurethane is not particularly limited, and known polyurethanes can be used.
  • the adhesive layer 7 may be, for example, a cured product of two-component curing type polyurethane.
  • the proportion of polyurethane in the adhesive layer 7 is preferably in the range of 0.1 to 50% by mass, more preferably in the range of 0.5 to 40% by mass, in the resin composition constituting the adhesive layer 7. more preferred.
  • the adhesive layer 7 is a cured product of a resin composition containing at least one selected from the group consisting of a compound having an isocyanate group, a compound having an oxazoline group, and an epoxy resin, and the acid-modified polyolefin.
  • the acid-modified polyolefin functions as a main agent, and the compound having an isocyanate group, the compound having an oxazoline group, and the compound having an epoxy group each function as a curing agent.
  • the adhesive layer 7 may contain a modifier having a carbodiimide group.
  • the thickness of the adhesive layer 7 is preferably about 50 ⁇ m or less, about 40 ⁇ m or less, about 30 ⁇ m or less, about 20 ⁇ m or less, or about 5 ⁇ m or less. Also, the thickness of the adhesive layer 7 is preferably about 0.1 ⁇ m or more and about 0.5 ⁇ m or more.
  • the thickness range of the adhesive layer 7 is preferably about 0.1 to 50 ⁇ m, about 0.1 to 40 ⁇ m, about 0.1 to 30 ⁇ m, about 0.1 to 20 ⁇ m, and about 0.1 to 5 ⁇ m. , about 0.5 to 50 ⁇ m, about 0.5 to 40 ⁇ m, about 0.5 to 30 ⁇ m, about 0.5 to 20 ⁇ m, and about 0.5 to 5 ⁇ m.
  • the thickness is preferably about 1 to 10 ⁇ m, more preferably about 1 to 5 ⁇ m.
  • the thickness is preferably about 2 to 50 ⁇ m, more preferably about 10 to 40 ⁇ m.
  • the heat-fusible resin layer 4 and the adhesive layer 7 can be formed by extrusion molding, for example.
  • the lower limits of the total thickness of the heat-fusible resin layer 4 and the adhesive layer 7 are 35 ⁇ m, 55 ⁇ m, and 75 ⁇ m.
  • the upper limit is 45 ⁇ m, 65 ⁇ m, 85 ⁇ m, and the numerical range is preferably 35 to 45 ⁇ m, 35 to 65 ⁇ m, 35 to 85 ⁇ m, 55 to 65 ⁇ m, 55 to 85 ⁇ m, 75 to 85 ⁇ m.
  • Method for producing an exterior material for an electricity storage device is not particularly limited as long as a laminate obtained by laminating each layer included in the exterior material for an electricity storage device of the present invention is obtained.
  • a step of obtaining a laminate comprising at least an impact-resistant layer, a resin film layer, a barrier layer, and a heat-fusible resin layer is provided.
  • a laminate (hereinafter sometimes referred to as "laminate A") is formed by laminating the resin film layer 2, the adhesive layer 6, and the barrier layer 3 in this order.
  • the laminate A is formed by coating an adhesive used for forming the adhesive layer 6 on the resin film layer 2 or on the barrier layer 3 whose surface is chemically treated as necessary, by gravure coating, It can be performed by a dry lamination method in which the barrier layer 3 or the resin film layer 2 is laminated and the adhesive layer 6 is cured after coating and drying by a coating method such as a roll coating method.
  • the heat-fusible resin layer 4 is laminated on the barrier layer 3 of the laminate A.
  • the heat-fusible resin layer 4 is directly laminated on the barrier layer 3
  • the heat-fusible resin layer 4 is laminated on the barrier layer 3 of the laminate A by a method such as thermal lamination or extrusion lamination. do it.
  • the adhesive layer 7 is provided between the barrier layer 3 and the heat-fusible resin layer 4, for example, (1) the adhesive layer 7 and the heat-fusible resin layer are placed on the barrier layer 3 of the laminate A.
  • the impact-resistant layer 1 is laminated on the surface of the resin film layer 2 opposite to the barrier layer 3 .
  • the shock-resistant layer 1 is formed by applying a material (for example, paper, non-woven fabric, woven fabric, resin base material, rubber base material, etc.) for forming the impact-resistant layer 1 to the resin film layer 2 via the adhesive layer 5. It can be formed by adhering to the surface. Alternatively, the impact-resistant layer 1 may be heat-sealed directly to the surface of the resin film layer 2 .
  • the order of the step of laminating the barrier layer 3 on the surface of the resin film layer 2 and the step of laminating the impact resistant layer 1 on the surface of the resin film layer 2 is not particularly limited. For example, after the impact-resistant layer 1 is laminated on the surface of the resin film layer 2 , the barrier layer 3 may be formed on the surface of the resin film layer 2 opposite to the impact-resistant layer 1 .
  • a laminate including the provided adhesive layer 7 / heat-fusible resin layer 4 is formed.
  • it may be subjected to heat treatment.
  • a colored layer may be provided between the resin film layer 2 and the barrier layer 3 .
  • the power storage device exterior material of the present disclosure is used in a packaging body for sealingly housing power storage device elements such as a positive electrode, a negative electrode, and an electrolyte. That is, an electricity storage device can be obtained by housing an electricity storage device element including at least a positive electrode, a negative electrode, and an electrolyte in a package formed by the electricity storage device exterior material of the present disclosure.
  • an electricity storage device element having at least a positive electrode, a negative electrode, and an electrolyte is placed in the exterior material for an electricity storage device of the present disclosure in a state in which the metal terminals connected to the positive electrode and the negative electrode protrude outward.
  • An electricity storage device using the exterior material for an electricity storage device is provided by covering an electricity storage device element with the exterior material for an electricity storage device and heat-sealing a heat-sealable resin layer to seal.
  • the heat-fusible resin portion of the electricity storage device exterior material of the present disclosure is on the inside (surface in contact with the electricity storage device element ) to form a package.
  • the power storage device exterior material 10 of the present disclosure includes the shock-resistant layer 1, it is difficult to form the recesses by molding using a mold like the conventional power storage device exterior material. Not suitable. For this reason, the power storage device exterior material 10 of the present disclosure is preferably used without being subjected to molding by a mold.
  • the shape of the power storage device 20 manufactured using the power storage device exterior material 10 of the present disclosure is, for example, a gable top type as shown in FIG. 4, a brick pouch side as shown in FIG. As shown, it preferably has a rectangular parallelepiped shape obtained by combining two lid members 11 and a cylindrical exterior member 10 for an electricity storage device. In the electricity storage device 20 of FIG.
  • the electricity storage device element is accommodated in a space formed by the cylindrically formed electricity storage device exterior material 10 and two cover members 11 .
  • the power storage device element is sealed by heat-sealing the heat-sealable resin layer 4 of the power storage device exterior material 10 to the periphery.
  • two or more exterior materials 10 for an electricity storage device of the present disclosure may be used, but it is sufficient to use only one.
  • only one power storage device exterior material 10 of the present disclosure is used.
  • molding in which the electricity storage device exterior material 10 is stretched by molding using a mold is not necessary.
  • the power storage device exterior material of the present disclosure can be suitably used for power storage devices such as batteries (including capacitors, capacitors, etc.).
  • the exterior material for an electricity storage device of the present disclosure may be used for either a primary battery or a secondary battery, it is preferably used for a secondary battery.
  • the type of secondary battery to which the power storage device exterior material of the present disclosure is applied is not particularly limited. Cadmium storage batteries, nickel/iron storage batteries, nickel/zinc storage batteries, silver oxide/zinc storage batteries, metal-air batteries, polyvalent cation batteries, capacitors, capacitors, and the like.
  • lithium ion batteries and lithium ion polymer batteries can be mentioned as suitable targets for application of the power storage device exterior material of the present disclosure.
  • the exterior material for an electricity storage device of the present disclosure is excellent in drop impact resistance, for example, an electricity storage device with a large weight of an electricity storage device element, specifically, an electricity storage device with a weight of 500 g or more, preferably 1000 g or more ( It is particularly useful when the upper limit is, for example, 30 kg or less. Moreover, it is particularly useful as an exterior material for an electric storage device, which is likely to be subjected to impact when dropped.
  • Example 1 A polyethylene terephthalate (PET) film (thickness: 12 ⁇ m) and an oriented nylon (ONy) film (thickness: 15 ⁇ m) were prepared as resin film layers. The PET film and the ONy film were adhered via the adhesive layer using a two-liquid type urethane adhesive so that the adhesive layer had a thickness of 3 ⁇ m after curing. As a barrier layer, an aluminum foil (JIS H4160: 1994 A8021H-O (thickness: 40 ⁇ m) was prepared.
  • JIS H4160 1994 A8021H-O (thickness: 40 ⁇ m
  • an aging treatment was performed to produce a laminate of the resin film layer/adhesive layer/barrier layer. Both sides are subjected to chemical conversion treatment.
  • the chemical conversion treatment of the aluminum foil is carried out by applying a treatment liquid consisting of phenolic resin, a chromium fluoride compound, and phosphoric acid so that the coating amount of chromium is 10 mg/m 2 (dry mass). Secondly, it was applied to both sides of an aluminum foil by a roll coating method and baked.
  • an adhesive layer and a heat-fusible resin layer were laminated on the barrier layer of each laminate obtained above.
  • maleic anhydride-modified polypropylene (PPa, thickness 40 ⁇ m) as an adhesive layer and random polypropylene (PP, thickness 40 ⁇ m) as a heat-sealable resin layer are melt co-extruded, respectively.
  • An adhesive layer/heat-fusible resin layer was laminated on the barrier layer to obtain a laminate in which resin film layer/adhesive layer/barrier layer/adhesive layer/heat-fusible resin layer were laminated in this order.
  • base paper for liquid paper containers manufactured by Potlatch Co., basis weight: 337 g/m 2
  • an impact-resistant layer fibrous base material layer
  • an impact-resistant layer is formed on the surface of the resin film layer of the laminate so that the adhesive layer has a thickness of 3 ⁇ m after curing.
  • the obtained exterior material for an electricity storage device two polypropylene plates (width 100 mm, length 40 mm, thickness 5 mm) as a lid material, and a metal plate made of aluminum as a simulated electricity storage device element (size is width 100 mm, length 140 mm, thickness 40 mm, weight 1.5 kg) was prepared.
  • the space formed by the two cover members and the electrical storage device exterior material formed in a cylindrical shape with the heat-sealable resin layer of the electrical storage device exterior material facing the metal plate.
  • the heat-sealable resin layer of the exterior material for the electric storage device is heat-sealed to the peripheral edge of the lid so that the metal plate is accommodated (for the four sides with a thickness of 5 mm of each lid) heat-sealing the heat-sealing resin layer of the exterior material for the electricity storage device, respectively), the simulated electricity storage device (that is, the space formed by one exterior material for the electricity storage device and two lids 2, in which a simulated electricity storage device element is accommodated).
  • Example 2 Impact resistant layer (fibrous base material layer)/resin film layer/adhesive layer/barrier layer/adhesive layer/ An exterior material for an electricity storage device was obtained in which the heat-fusible resin layers were sequentially laminated.
  • an aluminum metal plate (size: 100 mm wide, 140 mm long, 40 mm thick, weight 1.5 kg) was prepared as a simulated electricity storage device element.
  • the obtained exterior material for an electricity storage device is of a gable top type on the upper and lower sides (only the upper side is of the gable top type and the lower side is flat in FIG. 4).
  • the simulated electricity storage device element is wrapped, the heat-sealable resin layer is heat-sealed, and the simulated electricity storage device (that is, in the space formed by one electricity storage device exterior material, the simulated A typical electric storage device element is accommodated).
  • Example 3 In the same manner as in Example 2, a power storage device exterior material ( The size was 300 mm x 250 mm). In addition, an aluminum metal plate (size: 100 mm wide, 140 mm long, 40 mm thick, weight 1.5 kg) was prepared as a simulated electricity storage device element.
  • the obtained electrical storage device exterior material is shaped into a brick pouch to wrap the simulated electrical storage device element, and the heat-sealable resin layer is heat-sealed to form a simulated electrical storage device element.
  • a typical electricity storage device that is, a simulated electricity storage device element is accommodated in a space formed by one electricity storage device exterior material
  • Comparative example 1 A simulated power storage device was produced in the same manner as in Example 1, except that the shock-resistant layer (fibrous base material layer) was not provided in the power storage device exterior material.
  • Comparative example 2 A simulated power storage device was produced in the same manner as in Example 2, except that the shock-resistant layer (fibrous base material layer) was not provided on the power storage device exterior material.
  • Comparative example 3 A simulated power storage device was produced in the same manner as in Example 3, except that the shock-resistant layer (fibrous base material layer) was not provided in the power storage device exterior material.
  • Table 1 shows the results.
  • base paper for liquid paper containers was laminated as the outermost layer as a shock-resistant layer (fibrous base material layer), and the drop test evaluation from a height of 30 cm was good. rice field.
  • Section 1 An exterior material for an electricity storage device, comprising a laminate comprising, in order from the outside, at least an impact-resistant layer, a resin film layer, a barrier layer, and a heat-fusible resin layer.
  • Section 2. Item 2. The exterior material for an electricity storage device according to Item 1, wherein the shock-resistant layer is a fibrous base material layer.
  • Item 3. Item 3.
  • the power storage device exterior material according to Item 1 or 2 wherein the shock-resistant layer is formed of at least one of paper and nonwoven fabric.
  • Section 4. Item 4. The exterior material for an electricity storage device according to any one of items 1 to 3, wherein the impact-resistant layer has a basis weight of 100 g/m 2 or more.
  • Item 5 The power storage device exterior material according to any one of Items 1 to 4, wherein the shock-resistant layer constitutes the outermost layer of the laminate.
  • Item 6. The power storage device exterior material according to any one of Items 1 to 5, further comprising an adhesive layer between the impact resistant layer and the resin film layer.
  • Item 7. The exterior material for an electricity storage device according to any one of Items 1 to 6, further comprising an adhesive layer between the resin film layer and the barrier layer.
  • Item 9. Item 9. The power storage device exterior material according to any one of Items 1 to 8, wherein the barrier layer is made of an aluminum alloy foil.
  • a method for producing an exterior material for an electric storage device comprising a step of obtaining a laminate including, in order from the outside, at least an impact-resistant layer, a resin film layer, a barrier layer, and a heat-fusible resin layer.
  • Item 11 An electricity storage device, wherein an electricity storage device element comprising at least a positive electrode, a negative electrode, and an electrolyte is accommodated in a package formed of the electricity storage device exterior material according to any one of Items 1 to 9.
  • the electricity storage device element is accommodated in a space formed by the electricity storage device exterior material according to any one of items 1 to 9 formed in a cylindrical shape and two cover members, Item 12.
  • Item 14. 14 The electricity storage device according to any one of items 11 to 13, wherein only one sheet of the exterior material for an electricity storage device according to any one of items 1 to 9 is used.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Inorganic Chemistry (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne un matériau de boîtier pour un dispositif de stockage d'énergie, le matériau de boîtier étant conçu à partir d'un corps stratifié comprenant, dans l'ordre à partir du côté extérieur, au moins une couche de résistance aux chocs, une couche de film de résine, une couche barrière et une couche de résine thermofusible.
PCT/JP2022/048622 2021-12-28 2022-12-28 Matériau de boîtier pour dispositif de stockage d'énergie, procédé de fabrication de matériau de boîtier et dispositif de stockage d'énergie WO2023127956A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2023552595A JP7444341B2 (ja) 2021-12-28 2022-12-28 蓄電デバイス用外装材、その製造方法、及び蓄電デバイス

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021-215092 2021-12-28
JP2021215092 2021-12-28

Publications (1)

Publication Number Publication Date
WO2023127956A1 true WO2023127956A1 (fr) 2023-07-06

Family

ID=86999239

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2022/048622 WO2023127956A1 (fr) 2021-12-28 2022-12-28 Matériau de boîtier pour dispositif de stockage d'énergie, procédé de fabrication de matériau de boîtier et dispositif de stockage d'énergie

Country Status (2)

Country Link
JP (1) JP7444341B2 (fr)
WO (1) WO2023127956A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05314956A (ja) * 1992-05-11 1993-11-26 Asahi Chem Ind Co Ltd 密閉電池
JP2006093101A (ja) * 2004-09-24 2006-04-06 Samsung Sdi Co Ltd 強度強化層が形成されたリチウムポリマー電池及びその製造方法
JP2021177488A (ja) * 2017-03-17 2021-11-11 昭和電工パッケージング株式会社 蓄電デバイスの外装材用シーラントフィルム、蓄電デバイス用外装材及びその製造方法
JP6986184B1 (ja) * 2020-02-07 2021-12-22 大日本印刷株式会社 蓄電デバイス、及び、蓄電デバイスの製造方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6324546A (ja) * 1986-07-17 1988-02-01 Yuasa Battery Co Ltd 蓄電池
JP3070808B2 (ja) * 1993-06-30 2000-07-31 凸版印刷株式会社 リードフレームのバックシート
JP3851055B2 (ja) 2000-04-06 2006-11-29 守正 小泉 紙容器の製造方法
JP2017010828A (ja) 2015-06-24 2017-01-12 古河電池株式会社 金属空気電池
JP7028700B2 (ja) 2018-04-17 2022-03-02 藤倉コンポジット株式会社 金属空気電池
JP2021534290A (ja) 2018-08-13 2021-12-09 スリーエム イノベイティブ プロパティズ カンパニー 粘着組成物及び物品
EP3883763A1 (fr) 2018-11-19 2021-09-29 3M Innovative Properties Company Matériaux et structures d'emballage résistant à l'écrasement
CN210970241U (zh) 2019-11-25 2020-07-10 安庆市三环康泰纸塑有限公司 一种增强型多层淋膜纸结构

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05314956A (ja) * 1992-05-11 1993-11-26 Asahi Chem Ind Co Ltd 密閉電池
JP2006093101A (ja) * 2004-09-24 2006-04-06 Samsung Sdi Co Ltd 強度強化層が形成されたリチウムポリマー電池及びその製造方法
JP2021177488A (ja) * 2017-03-17 2021-11-11 昭和電工パッケージング株式会社 蓄電デバイスの外装材用シーラントフィルム、蓄電デバイス用外装材及びその製造方法
JP6986184B1 (ja) * 2020-02-07 2021-12-22 大日本印刷株式会社 蓄電デバイス、及び、蓄電デバイスの製造方法

Also Published As

Publication number Publication date
JP7444341B2 (ja) 2024-03-06
JPWO2023127956A1 (fr) 2023-07-06

Similar Documents

Publication Publication Date Title
JP7192943B2 (ja) 電池用包装材料、その製造方法、及び電池
JP2017069203A (ja) 電池用包装材料及び電池
WO2020153460A1 (fr) Matériau extérieur pour dispositif de stockage d'énergie, son procédé de fabrication et dispositif de stockage d'énergie
CN109417133A (zh) 电池用外装材料和电池
JP2023075950A (ja) 電池用包装材料、その製造方法、電池用包装材料の巻取体、電池
WO2020153457A1 (fr) Batterie entièrement solide, et procédé de fabrication de celle-ci
WO2020085462A1 (fr) Matériau de boîtier pour dispositif de stockage d'énergie, son procédé de production et dispositif de stockage d'énergie
WO2020085463A1 (fr) Matériau de conditionnement pour dispositif de stockage d'énergie, son procédé de production et dispositif de stockage d'énergie
JP7380544B2 (ja) 蓄電デバイス用外装材、その製造方法、及び蓄電デバイス
WO2020184693A1 (fr) Matériau d'emballage externe pour batteries entièrement solides, son procédé de production et batterie entièrement solide
JP7234794B2 (ja) 蓄電デバイス用外装材、その製造方法、蓄電デバイス、及びポリアミドフィルム
WO2023127956A1 (fr) Matériau de boîtier pour dispositif de stockage d'énergie, procédé de fabrication de matériau de boîtier et dispositif de stockage d'énergie
JP2023012724A (ja) 蓄電デバイス用外装材、その製造方法、及び蓄電デバイス
JP7192795B2 (ja) 電池用包装材料及び電池
WO2020075731A1 (fr) Élément de soupape de batterie, procédé de fabrication dudit élément de soupape de batterie et batterie
WO2022210750A1 (fr) Matériau extérieur pour dispositif de stockage d'énergie, dispositif de stockage d'énergie et son procédé de fabrication
WO2023058452A1 (fr) Matériau de couverture pour dispositif de stockage d'énergie, procédé de fabrication associé, et dispositif de stockage d'énergie
JP7118038B2 (ja) 蓄電デバイス用外装材、蓄電デバイス、及びこれらの製造方法
WO2023136360A1 (fr) Matériau extérieur pour dispositif de stockage d'électricité, son procédé de fabrication, composition de résine et dispositif de stockage d'électricité
JP6699130B2 (ja) 電池用包装材料
JPWO2019093431A1 (ja) 電池用包装材料、その製造方法、電池、電池の導電性層を配線として利用する通電方法、電気機器
WO2023058453A1 (fr) Matériau d'emballage externe pour dispositifs d'accumulation d'énergie, son procédé de production et dispositif d'accumulation d'énergie
WO2023058701A1 (fr) Matériau d'emballage externe pour dispositifs d'accumulation d'énergie, son procédé de production, et dispositif d'accumulation d'énergie
JP7447797B2 (ja) 蓄電デバイス用外装材、その製造方法、及び蓄電デバイス
WO2023243696A1 (fr) Matériau extérieur pour dispositif de stockage d'énergie, son procédé de production, et dispositif de stockage d'énergie

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: 22916178

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2023552595

Country of ref document: JP