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WO2017188396A1 - Matériau de revêtement de batterie, son procédé de fabrication, batterie et son procédé de fabrication - Google Patents

Matériau de revêtement de batterie, son procédé de fabrication, batterie et son procédé de fabrication Download PDF

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Publication number
WO2017188396A1
WO2017188396A1 PCT/JP2017/016789 JP2017016789W WO2017188396A1 WO 2017188396 A1 WO2017188396 A1 WO 2017188396A1 JP 2017016789 W JP2017016789 W JP 2017016789W WO 2017188396 A1 WO2017188396 A1 WO 2017188396A1
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WO
WIPO (PCT)
Prior art keywords
mass
less
layer
aluminum alloy
packaging material
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2017/016789
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English (en)
Japanese (ja)
Inventor
天野　真
大佑 安田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dai Nippon Printing Co Ltd
Original Assignee
Dai Nippon Printing Co Ltd
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 Dai Nippon Printing Co Ltd filed Critical Dai Nippon Printing Co Ltd
Priority to JP2018514709A priority Critical patent/JP6996499B2/ja
Publication of WO2017188396A1 publication Critical patent/WO2017188396A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • 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
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • 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
    • 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
    • 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
    • H01M50/14—Primary casings; Jackets or wrappings for protecting against damage caused by external factors
    • H01M50/145—Primary casings; Jackets or wrappings for protecting against damage caused by external factors for protecting against corrosion
    • 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 invention relates to a battery packaging material, a manufacturing method thereof, a battery, and a manufacturing method thereof.
  • recesses are formed by cold forming, and battery elements such as electrodes and electrolytes are arranged in the spaces formed by the recesses, and the heat-fusible resin layers Is heat-sealed to obtain a battery in which the battery element is accommodated in the battery packaging material.
  • the thickness of the aluminum alloy foil layer is reduced (for example, 30 ⁇ m or less)
  • the aluminum foil is further thinned by molding, so that the corners and ridges formed by the molding are not formed. It has been clarified that bending (for example, bending P of the ridge portion A in FIG. 4) or the like occurs, and the shape stability with time after molding tends to decrease.
  • a main object of the present invention is to provide a battery packaging material having excellent shape stability even after molding.
  • the composition of the aluminum alloy comprising at least the base material layer, the aluminum alloy foil layer, and the heat-fusible resin layer in this order, and constituting the aluminum alloy foil layer was Si: 0.60.
  • the inventor of the present invention also described the above-mentioned aluminum even when the thickness of the aluminum alloy foil layer is very thin (for example, 30 ⁇ m or less) and the thickness of the battery packaging material is also very thin (for example, 105 ⁇ m or less). It has been found that by using an alloy foil layer, a battery packaging material having excellent shape stability even after molding is obtained. The present invention has been completed by further studies based on these findings.
  • Item 1 It consists of a laminate having at least a base material layer, an aluminum alloy foil layer, and a heat-fusible resin layer in this order,
  • the composition of the aluminum alloy constituting the aluminum alloy foil layer is Si: 0.60 mass% or less, Fe: 0.70 mass% or less, Cu: 0.25 mass% or less, Mn: 0.05 mass%
  • a battery packaging material that satisfies 1.5% by mass or less, Zn: 0.25% by mass or less, V: 0.05% by mass or less, and Ti: 0.03% by mass or less.
  • Item 2. Item 2. The battery packaging material according to Item 1, wherein the aluminum alloy foil layer has a thickness of 30 ⁇ m or less.
  • a loop is formed with the base material layer of the battery packaging material having a width of 15 mm and a length of 250 mm facing outside, and is measured under measurement conditions of a circumference of the loop of 90 mm and an indentation distance of 15 mm.
  • Item 3. The battery packaging material according to Item 1 or 2, wherein the loop stiffness value is 0.08 N / 15 mm or more.
  • Item 4. Item 4. The battery packaging material according to any one of Items 1 to 3, wherein the laminate has a thickness of 105 ⁇ m or less.
  • the battery packaging material according to any one of Items 1 to 4 further comprising an undercoat layer on at least one surface of the aluminum alloy foil layer.
  • Item 6. Item 6.
  • Item 7. A battery in which a battery element including at least a positive electrode, a negative electrode, and an electrolyte is housed in a package formed of the battery packaging material according to any one of Items 1 to 6.
  • Item 8. At least a base material layer, an aluminum alloy foil layer, and a heat-fusible resin layer are provided so as to be laminated in this order, and a step of obtaining a laminate is provided.
  • the composition of the aluminum alloy constituting the aluminum alloy foil layer is Si: 0.60 mass% or less, Fe: 0.70 mass% or less, Cu: 0.25 mass% or less, Battery packaging that uses Mn: 0.05% by mass or more and 1.50% by mass or less, Zn: 0.25% by mass or less, V: 0.05% by mass or less, Ti: 0.03% by mass or less Material manufacturing method.
  • Item 9. A method for producing a battery, comprising a step of housing a battery element including at least a positive electrode, a negative electrode, and an electrolyte in a package formed of the battery packaging material according to any one of Items 1 to 6.
  • a battery packaging material having excellent shape stability even after molding can be provided. Since the battery packaging material of the present invention is excellent in shape stability after molding, it can also contribute to improvement of battery productivity.
  • the battery packaging material of the present invention can increase the energy density of the battery because the thickness of the aluminum alloy foil layer and the thickness of the battery packaging material can be made very thin.
  • the battery packaging material of the present invention comprises a laminate having at least a base material layer, an aluminum alloy foil layer, and a heat-fusible resin layer in this order, and the composition of the aluminum alloy constituting the aluminum alloy foil layer is , Si: 0.60 mass% or less (that is, Si: 0.00 mass% or more and 0.60 mass% or less and Si may not be contained), Fe: 0.70 mass% or less (that is, Fe: 0.00 mass% or more and 0.70 mass% or less, Fe may not be contained), Cu: 0.25 mass% or less (that is, Cu: 0.00 mass% or more and 0.000 mass% or less).
  • Mn 0.05% by mass or more and 1.50% by mass or less
  • Zn 0.25% by mass or less (that is, Zn: 0.00% by mass) %
  • Zn V 0.05 mass% or less (that is, V: 0.00 mass% or more and 0.05 mass% or less, V may not be contained)
  • Ti It is characterized by satisfying 0.03% by mass or less (that is, Ti: 0.00% by mass or more and 0.03% by mass or less and Ti may not be contained).
  • the battery packaging material 10 of the present invention comprises at least a base material layer 1, an aluminum alloy foil layer 3, and a heat-fusible resin layer 4 in this order. It consists of the laminated body which has.
  • the base material layer 1 is the outermost layer side
  • the heat-fusible resin layer 4 is the innermost layer. That is, when the battery is assembled, the battery element is sealed by heat-sealing the heat-fusible resin layers 4 positioned at the periphery of the battery element to seal the battery element.
  • the battery packaging material 10 of the present invention has an adhesive layer 2 between the base material layer 1 and the aluminum alloy foil layer 3 for the purpose of enhancing the adhesiveness as necessary. It may be provided.
  • the battery packaging material 10 of the present invention is provided between the aluminum alloy foil layer 3 and the heat-fusible resin layer 4 for the purpose of enhancing the adhesiveness as necessary.
  • An adhesive layer 5 may be provided.
  • the thickness of the laminate constituting the battery packaging material 10 of the present invention is not particularly limited, but the battery packaging material is excellent in moldability while reducing the thickness of the battery packaging material to increase the energy density of the battery. From the viewpoint of, for example, 105 ⁇ m or less, preferably 100 ⁇ m or less, more preferably 40 ⁇ m or more and 90 ⁇ m or less, and still more preferably 40 ⁇ m or more and 80 ⁇ m or less.
  • the rigidity as a battery packaging material is also reduced, and the shape stability after molding tends to be lowered. More specifically, when the thickness of the aluminum alloy foil layer or the thickness of the laminate is reduced, the rigidity as a battery packaging material is also reduced. As a result, the shape stability after molding is likely to be reduced, and bending deformation is likely to occur at the corners and ridges of the molding part.
  • Such rigidity can be evaluated by a loop stiffness value. The greater the loop stiffness value, the higher the stiffness. The loop stiffness value is measured under the following measurement conditions.
  • the strength of the rigidity can be evaluated based on a load when a loop is produced from the battery packaging material and the diameter direction of the loop is crushed. It is evaluated that the greater the loop stiffness value, the stronger the rigidity.
  • a loop is formed with the base material layer of the battery packaging material having a width of 15 mm and a length of 250 mm on the outside, and the measurement is performed under the measurement conditions of a circumference of the loop of 90 mm and an indentation distance of 15 mm.
  • the loop stiffness value of the battery packaging material is preferably 0.08 N / 15 mm or more, more preferably 0.11 N / 15 mm or more, and 0.12 N / 15 mm or more and 0.18 N / 15 mm or less. More preferably.
  • the upper limit of the loop stiffness value is preferably 0.18 N / 15 mm or less.
  • a loop is produced from the battery packaging material, and a load required to reach a predetermined pushing distance when the diameter direction of the loop is crushed is defined as a loop stiffness value.
  • the base material layer of the battery packaging material having a width of 15 mm and a length of 250 mm is placed outside, and both ends are fixed with clips, and the circumference is 90 mm at the center in the length direction. Make a circular loop.
  • a load required to push the loop from the opposite side of the clip and reach a pushing distance of 15 mm is defined as a loop stiffness value.
  • the base material layer 1 is a layer located on the outermost layer side.
  • the material for forming the base material layer 1 is not particularly limited as long as it has insulating properties. Examples of the material for forming the base material layer 1 include polyester, polyamide, epoxy resin, acrylic resin, fluorine resin, polyurethane, silicon resin, phenol resin, polyetherimide, polyimide, polycarbonate, and a mixture or copolymer thereof. Etc.
  • polyesters include polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polybutylene naphthalate, polyethylene isophthalate, copolymerized polyester mainly composed of ethylene terephthalate, and butylene terephthalate mainly composed of repeating units. And the like copolyester.
  • the copolymer polyester mainly composed of ethylene terephthalate is a copolymer polyester that polymerizes with ethylene isophthalate mainly composed of ethylene terephthalate (hereinafter, polyethylene (terephthalate / isophthalate)).
  • polyethylene terephthalate / isophthalate
  • polyethylene terephthalate / adipate
  • polyethylene terephthalate / sodium sulfoisophthalate
  • polyethylene terephthalate / sodium isophthalate
  • polyethylene terephthalate / phenyl-dicarboxylate
  • polyethylene terephthalate / decane dicarboxylate
  • polyester mainly composed of butylene terephthalate as a repeating unit
  • a copolymer polyester that polymerizes with butylene isophthalate having butylene terephthalate as a repeating unit hereinafter referred to as polybutylene (terephthalate / isophthalate).
  • polybutylene (terephthalate / adipate) polybutylene (terephthalate / sebacate), polybutylene (terephthalate / decanedicarboxylate), polybutylene naphthalate, and the like.
  • These polyesters may be used individually by 1 type, and may be used in combination of 2 or more type.
  • Polyester has the advantage of being excellent in electrolytic solution resistance and less likely to cause whitening due to the adhesion of the electrolytic solution, and is suitably used as a material for forming the base material layer 1.
  • polyamides include aliphatic polyamides such as nylon 6, nylon 66, nylon 610, nylon 12, nylon 46, and a copolymer of nylon 6 and nylon 66; terephthalic acid and / or isophthalic acid Nylon 6I, Nylon 6T, Nylon 6IT, Nylon 6I6T (I represents isophthalic acid, T represents terephthalic acid) and the like, and polymetaxylylene azide Polyamides containing aromatics such as Pamide (MXD6); Alicyclic polyamides such as Polyaminomethylcyclohexyl Adipamide (PACM6); and Lactam components and isocyanate components such as 4,4'-diphenylmethane-diisocyanate are copolymerized Polya De, copolymerized polyamide and polyester and a copolymer of a polyalkylene ether glycol polyester amide copolymer and polyether ester amide copolymers; and copolymers thereof.
  • MXD6
  • polyamides may be used individually by 1 type, and may be used in combination of 2 or more type.
  • the stretched polyamide film is excellent in stretchability, can prevent whitening due to resin cracking of the base material layer 1 during molding, and is suitably used as a material for forming the base material layer 1.
  • the base material layer 1 may be formed of a uniaxial or biaxially stretched resin film, or may be formed of an unstretched resin film. Among them, a uniaxially or biaxially stretched resin film, in particular, a biaxially stretched resin film has improved heat resistance by orientation crystallization, and thus is suitably used as the base material layer 1. Moreover, the base material layer 1 may be formed by coating the above-mentioned raw material on the aluminum alloy foil layer 3.
  • the resin film forming the base layer 1 is preferably nylon or polyester, more preferably biaxially stretched nylon, biaxially stretched polyester, and particularly preferably biaxially stretched nylon.
  • the base material layer 1 can be laminated (multi-layer structure) of at least one of resin films and coatings of different materials in order to improve pinhole resistance and insulation when used as a battery packaging. is there. Specific examples include a multilayer structure in which a polyester film and a nylon film are laminated, a multilayer structure in which a plurality of nylon films are laminated, a multilayer structure in which a plurality of polyester films are laminated, and the like.
  • the base material layer 1 has a multilayer structure, a laminate of a biaxially stretched nylon film and a biaxially stretched polyester film, a laminate of a plurality of biaxially stretched nylon films, and a laminate of a plurality of biaxially stretched polyester films The body is preferred.
  • the base material layer 1 has a multilayer structure of a laminate of a biaxially stretched nylon film and a biaxially stretched polyester film.
  • the base material layer 1 is preferably a laminate having biaxially stretched nylon and biaxially stretched polyester in this order from the aluminum alloy foil layer 3 side.
  • the thickness of each layer is preferably 2 ⁇ m or more and 25 ⁇ m or less.
  • each resin film may be bonded via an adhesive or may be directly laminated without using an adhesive.
  • a method of bonding in a hot melt state such as a co-extrusion method, a sandwich lamination method, a thermal lamination method, and the like can be given.
  • the adhesive agent to be used may be a two-component curable adhesive, or a one-component curable adhesive.
  • the bonding mechanism of the adhesive is not particularly limited, and may be any of a chemical reaction type, a solvent volatilization type, a heat melting type, a hot pressure type, an electron beam curable type, an ultraviolet curable type, and the like.
  • Specific examples of the adhesive include those similar to the adhesive exemplified in the adhesive layer 2. Further, the thickness of the adhesive can be the same as that of the adhesive layer 2.
  • a lubricant is preferably attached to the surface of the base material layer 1 from the viewpoint of improving the moldability of the battery packaging material.
  • an amide type lubricant is mentioned.
  • Specific examples of the amide-based lubricant include saturated fatty acid amide, unsaturated fatty acid amide, substituted amide, methylolamide, saturated fatty acid bisamide, unsaturated fatty acid bisamide, and the like.
  • Specific examples of the saturated fatty acid amide include lauric acid amide, palmitic acid amide, stearic acid amide, behenic acid amide, hydroxy stearic acid amide and the like.
  • the unsaturated fatty acid amide include oleic acid amide and erucic acid amide.
  • substituted amide include N-oleyl palmitic acid amide, N-stearyl stearic acid amide, N-stearyl oleic acid amide, N-oleyl stearic acid amide, N-stearyl erucic acid amide and the like.
  • methylolamide include methylol stearamide.
  • saturated fatty acid bisamides include methylene bis stearamide, ethylene biscapric amide, ethylene bis lauric acid amide, ethylene bis stearic acid amide, ethylene bishydroxy stearic acid amide, ethylene bisbehenic acid amide, hexamethylene bis stearic acid amide.
  • unsaturated fatty acid bisamides include ethylene bisoleic acid amide, ethylene biserucic acid amide, hexamethylene bisoleic acid amide, N, N′-dioleyl adipic acid amide, N, N′-dioleyl sebacic acid amide Etc.
  • fatty acid ester amide include stearoamidoethyl stearate.
  • aromatic bisamide include m-xylylene bis stearic acid amide, m-xylylene bishydroxy stearic acid amide, N, N′-distearyl isophthalic acid amide and the like.
  • One type of lubricant may be used alone, or two or more types may be used in combination.
  • the amount of the lubricant is not particularly limited, but is preferably 3 mg / m 2 or more, more preferably 4 mg / m 2 or more in a temperature 24 ° C. and 50% relative humidity environment. 15 mg / m 2 or less, more preferably 5 mg / m 2 or more and 14 mg / m 2 or less.
  • the thickness of the base material layer 1 is preferably 4 ⁇ m or more, more preferably from the viewpoint of making the battery packaging material 10 excellent in shape stability after molding while reducing the thickness of the battery packaging material 10. 10 micrometers or more and 75 micrometers or less, More preferably, 10 micrometers or more and 50 micrometers or less are mentioned.
  • the adhesive layer 2 is a layer provided between the base material layer 1 and the aluminum alloy foil layer 3 as necessary in order to firmly bond the base material layer 1 and the aluminum alloy foil layer 3.
  • the adhesive layer 2 is formed of an adhesive capable of bonding the base material layer 1 and the aluminum alloy foil layer 3.
  • the adhesive used for forming the adhesive layer 2 may be a two-component curable adhesive or a one-component curable adhesive.
  • the bonding mechanism of the adhesive used for forming the adhesive layer 2 is not particularly limited, and may be any of a chemical reaction type, a solvent volatilization type, a heat melting type, and a hot pressure type.
  • adhesive components that can be used to form the adhesive layer 2 include polyester resins such as polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polybutylene naphthalate, polyethylene isophthalate, and copolyester; polyethers Polyurethane adhesives; epoxy resins; phenol resin resins; polyamide resins such as nylon 6, nylon 66, nylon 12, copolymer polyamides; polyolefins such as polyolefins, carboxylic acid modified polyolefins, metal modified polyolefins Resin, polyvinyl acetate resin; cellulose adhesive; (meth) acrylic resin; polyimide resin; polycarbonate; amino resin such as urea resin and melamine resin; chloroprene rubber, nitrile - arm, styrene rubbers such as butadiene rubber; and silicone resins.
  • These adhesive components may be used individually by 1 type, and may be used in combination of 2 or more type.
  • the thickness of the adhesive layer 2 is not particularly limited as long as it exhibits a function as an adhesive layer, and examples thereof include 1 ⁇ m to 10 ⁇ m, preferably 2 ⁇ m to 5 ⁇ m.
  • the aluminum alloy foil layer 3 is a layer that functions as a barrier layer for preventing water vapor, oxygen, light, etc. from entering the battery, in addition to improving the strength of the battery packaging material 10. is there.
  • the composition of the aluminum alloy constituting the aluminum alloy foil layer 3 is Si: 0.60 mass% or less (that is, Si: 0.00 mass% or more and 0.60 mass%). And may contain no Si), Fe: 0.70% by mass or less (ie Fe: 0.00% by mass or more and 0.70% by mass or less, and Fe may not be contained) Cu: 0.25% by mass or less (ie, Cu: 0.00% by mass or more and 0.25% by mass or less, Cu may not be included), Mn: 0.05% by mass 1.50% by mass or less, Zn: 0.25% by mass or less (ie, Zn: 0.00% by mass or more and 0.25% by mass or less, Zn may not be included), V: 0 .05 mass% or less (that is, V: 0.00 mass) 0.05% by mass or less and V may not be contained), Ti: 0.03% by mass or less (that is, Ti: 0.00% by mass or more and 0.03% by mass or less, Ti May
  • the battery packaging material 10 of the present invention includes the aluminum alloy foil layer 3 having such a specific composition, the shape stability after molding is excellent. More specifically, soft aluminum widely used in conventional battery packaging materials has a compositional feature of containing a large amount of iron (Fe), whereas in the present invention, the composition of the aluminum alloy constituting the aluminum alloy foil layer 3 has a compositional feature that it contains a large amount of manganese (Mn), thereby exhibiting an effect of excellent shape stability after molding. Is done. Since the battery packaging material of the present invention is excellent in shape stability after molding, it can also contribute to the improvement of battery productivity. Furthermore, since the thickness of the aluminum alloy foil layer and the thickness of the battery packaging material can be made very thin, the energy density of the battery can be increased.
  • the balance is Al, but other components (for example, inevitable impurities) other than the above may be included.
  • the other components are individually 0.00 mass% or more and 0.05 mass% or less, and the total is 0.00 mass% or more and 0.15 mass% or less. May be.
  • the composition of the aluminum alloy constituting the aluminum alloy foil layer 3 in the battery packaging material 10 of the present invention is Si: 0.00. 08 mass% or more and 0.60 mass% or less, Fe: 0.1 mass% or more and 0.7 mass% or less, Cu: 0.10 mass% or more and 0.20 mass% or less, Mn: 0.10 mass% or more 1 0.0 mass% or less, Zn: 0.05 mass% or more and 0.15 mass% or less, V: 0.05 mass% or less (that is, V: 0.00 mass% or more and 0.05 mass% or less, V And Ti: 0.03% by mass or less (ie, Ti: 0.00% by mass or more and 0.03% by mass or less, and Ti may not be contained) It is preferable.
  • other components are individually 0.00 mass% or more and 0.05 mass% or less, and the total is 0.00 mass% or more and 0.15
  • the composition of the aluminum alloy is Si: 0.08 mass% or more and 0.60 mass% or less, Fe: 0.1 mass% 0.7 mass% or less, Cu: 0.13 mass% or more and 0.16 mass% or less, Mn: 0.15 mass% or more and 0.8 mass% or less, Zn: 0.05 mass% or more and 0.10 mass % Or less, V: 0.05 mass% or less (that is, V: 0.00 mass% or more and 0.05 mass% or less, V may not be included), Ti: 0.03 mass% or less (In other words, Ti is 0.00 mass% or more and 0.03 mass% or less, and Ti may not be contained), and Al: remainder is particularly preferable.
  • composition of the aluminum alloy in addition to the above-described components, other components are individually 0.00 mass% or more and 0.05 mass% or less, and the total is 0.00 mass% or more and 0.15 mass% or less. It may be.
  • the composition of the aluminum alloy constituting the aluminum alloy foil layer can be identified by elemental analysis.
  • the thickness of the aluminum alloy foil layer 3 is, for example, 45 ⁇ m or less from the viewpoint of exhibiting high shape stability after molding while further reducing the thickness of the battery packaging material and increasing the energy density of the battery.
  • 40 micrometers or less, 35 micrometers or less, 30 micrometers or less, and 25 micrometers or less are mentioned, Preferably they are 10 micrometers or more and 30 micrometers or less, More preferably, they are 10 micrometers or more and 25 micrometers or less, Especially preferably, they are 10 micrometers or more and 20 micrometers or less.
  • the aluminum alloy foil layer 3 is preferably subjected to chemical conversion treatment on at least one surface, preferably both surfaces, for the purpose of stabilizing adhesion, preventing dissolution and corrosion, and the like.
  • the chemical conversion treatment refers to a treatment for forming an acid-resistant film on the surface of the aluminum alloy foil layer.
  • chromate treatment using a chromium compound such as chromium nitrate, chromium fluoride, chromium sulfate, chromium acetate, chromium oxalate, chromium biphosphate, chromic acid acetyl acetate, chromium chloride, potassium sulfate chromium; Phosphoric acid treatment using a phosphoric acid compound such as sodium phosphate, potassium phosphate, ammonium phosphate, polyphosphoric acid; an aminated phenol polymer having a repeating unit represented by the following general formulas (1) to (4) is used And chromate treatment.
  • the repeating units represented by the following general formulas (1) to (4) may be contained singly or in any combination of two or more. Also good.
  • X represents a hydrogen atom, a hydroxyl group, an alkyl group, a hydroxyalkyl group, an allyl group or a benzyl group.
  • R 1 and R 2 are the same or different and each represents a hydroxyl group, an alkyl group, or a hydroxyalkyl group.
  • examples of the alkyl group represented by X, R 1 and R 2 include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group, an isobutyl group, Examples thereof include straight-chain or branched alkyl groups having 1 to 4 carbon atoms such as a tert-butyl group.
  • Examples of the hydroxyalkyl group represented by X, R 1 and R 2 include a hydroxymethyl group, a 1-hydroxyethyl group, a 2-hydroxyethyl group, a 1-hydroxypropyl group, a 2-hydroxypropyl group, 3- Linear 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, 4-hydroxybutyl group An alkyl group is mentioned.
  • the alkyl group and hydroxyalkyl group represented by X, R 1 and R 2 may be the same or different.
  • X is preferably a hydrogen atom, a hydroxyl group or a hydroxyalkyl group.
  • the number average molecular weight of the aminated phenol polymer having a repeating unit represented by the general formulas (1) to (4) is preferably about 500 to 1,000,000, for example, about 1,000 to 20,000. More preferred.
  • a coating in which fine particles of metal oxide such as aluminum oxide, titanium oxide, cerium oxide, tin oxide, or barium sulfate are dispersed in phosphoric acid is coated.
  • membrane on the surface of the aluminum alloy foil layer 3 by performing a baking process at 150 degreeC or more is mentioned.
  • a resin layer obtained by crosslinking a cationic polymer with a crosslinking agent may be further formed on the acid resistant film.
  • examples of the cationic polymer include polyethyleneimine, an ionic polymer complex composed of a polymer having polyethyleneimine and a carboxylic acid, a primary amine graft acrylic resin obtained by graft polymerization of a primary amine on an acrylic main skeleton, and polyallylamine. Or the derivative, aminophenol, etc. are mentioned.
  • these cationic polymers only one type may be used, or two or more types may be used in combination.
  • examples of the crosslinking agent include a compound having at least one functional group selected from the group consisting of an isocyanate group, a glycidyl group, a carboxyl group, and an oxazoline group, and a silane coupling agent. As these crosslinking agents, only one type may be used, or two or more types may be used in combination.
  • At least the surface on the inner layer side of the aluminum alloy foil is firstly immersed in an alkali soaking method, electrolytic cleaning method, acid cleaning method, electrolytic acid cleaning method.
  • Treatment liquid (aqueous solution) mainly composed of a mixture of metal salts, or treatment liquid (aqueous solution) principally composed of a non-metallic phosphate and a mixture of these non-metallic salts, or acrylic resin Coating a treatment liquid (aqueous solution) consisting of a mixture with a water-based synthetic resin such as phenolic resin or urethane resin by a well-known coating method such as roll coating, gravure printing, or dipping.
  • the acid-resistant coating For example, when treated with a chromium phosphate salt treatment solution, it becomes an acid-resistant film made of chromium phosphate, aluminum phosphate, aluminum oxide, aluminum hydroxide, aluminum fluoride, etc., and treated with a zinc phosphate salt treatment solution. In this case, an acid-resistant film made of zinc phosphate hydrate, aluminum phosphate, aluminum oxide, aluminum hydroxide, aluminum fluoride or the like is obtained.
  • an acid-resistant film for example, at least the surface on the inner layer side of the aluminum alloy foil is first subjected to an alkali dipping method, an electrolytic cleaning method, an acid cleaning method, an electrolytic acid cleaning method, an acid An acid-resistant film can be formed by performing a degreasing process by a known processing method such as an activation method and then performing a known anodizing process on the degreasing surface.
  • acid-resistant films include phosphate-based and chromic acid-based films.
  • phosphate-based and chromic acid-based films examples include zinc phosphate, iron phosphate, manganese phosphate, calcium phosphate, and chromium phosphate.
  • chromic acid system examples include chromium chromate.
  • an acid-resistant film by forming an acid-resistant film such as phosphate, chromate, fluoride, triazine thiol compound, between the aluminum and the base material layer at the time of embossing molding
  • an acid-resistant film such as phosphate, chromate, fluoride, triazine thiol compound
  • hydrogen fluoride generated by the reaction between electrolyte and moisture prevents dissolution and corrosion of the aluminum surface, especially the dissolution and corrosion of aluminum oxide present on the aluminum surface, and adhesion of the aluminum surface This improves the wettability and prevents delamination between the base material layer and aluminum at the time of heat fusion.
  • embossed type it shows the effect of preventing delamination between the base material layer and aluminum at the time of press molding.
  • an aqueous solution composed of three components of a phenol resin, a chromium (III) fluoride compound, and phosphoric acid is applied to the aluminum surface, and the dry baking treatment is good.
  • the acid-resistant film includes a layer having cerium oxide, phosphoric acid or phosphate, an anionic polymer, and a crosslinking agent that crosslinks the anionic polymer, and the phosphoric acid or phosphate is About 1 to 100 parts by mass may be blended with 100 parts by mass of cerium oxide. It is preferable that the acid-resistant film has a multilayer structure further including a layer having a cationic polymer and a crosslinking agent for crosslinking the cationic polymer.
  • the anionic polymer is poly (meth) acrylic acid or a salt thereof, or a copolymer containing (meth) acrylic acid or a salt thereof as a main component.
  • the said crosslinking agent is at least 1 sort (s) chosen from the group which has a functional group in any one of an isocyanate group, a glycidyl group, a carboxyl group, and an oxazoline group, and a silane coupling agent.
  • the phosphoric acid or phosphate is preferably condensed phosphoric acid or condensed phosphate.
  • the chemical conversion treatment only one type of chemical conversion treatment may be performed, or two or more types of chemical conversion processing may be performed in combination. Furthermore, these chemical conversion treatments may be carried out using one kind of compound alone, or may be carried out using a combination of two or more kinds of compounds.
  • a chromate treatment a chemical conversion treatment combining a chromium compound, a phosphate compound, and an aminated phenol polymer are preferable.
  • chromium compounds chromic acid compounds are preferred.
  • the acid resistant film examples include those containing at least one of phosphate, chromate, fluoride, and triazine thiol.
  • An acid resistant film containing a cerium compound is also preferable.
  • cerium compound cerium oxide is preferable.
  • the acid resistant film examples include a phosphate film, a chromate film, a fluoride film, and a triazine thiol compound film.
  • a phosphate film As an acid-resistant film, one of these may be used, or a plurality of combinations may be used.
  • a treatment solution comprising a mixture of a metal phosphate and an aqueous synthetic resin, or a mixture of a non-metal phosphate and an aqueous synthetic resin It may be formed of a treatment liquid consisting of
  • the composition of the acid resistant film can be analyzed using, for example, time-of-flight secondary ion mass spectrometry.
  • time-of-flight secondary ion mass spectrometry for example, a peak derived from at least one of Ce + and Cr + is detected.
  • the surface of the aluminum alloy foil is provided with an acid resistant film containing at least one element selected from the group consisting of phosphorus, chromium and cerium.
  • the acid-resistant film on the surface of the aluminum alloy foil of the battery packaging material contains at least one element selected from the group consisting of phosphorus, chromium and cerium. can do. Specifically, first, in the battery packaging material, the heat-fusible resin layer, the adhesive layer, and the like laminated on the aluminum alloy foil are physically peeled off. Next, the aluminum alloy foil is put in an electric furnace, and organic components present on the surface of the aluminum alloy foil are removed at about 300 ° C. for about 30 minutes. Then, it confirms that these elements are contained using the X-ray photoelectron spectroscopy of the surface of aluminum alloy foil.
  • the amount of the acid-resistant film formed on the surface of the aluminum alloy foil layer 3 in the chemical conversion treatment is not particularly limited.
  • Chromium compound is about 0.5 to 50 mg, preferably about 1.0 to 40 mg in terms of chromium
  • phosphorus compound is about 0.5 to 50 mg, preferably about 1.0 to 40 mg
  • the thickness of the acid-resistant film is not particularly limited, but is preferably about 1 nm to 10 ⁇ m, more preferably 1 from the viewpoint of the cohesive strength of the film and the adhesive strength with the aluminum alloy foil layer 3 and the heat-sealing resin layer. About 100 to 100 nm, more preferably about 1 to 50 nm.
  • the thickness of the acid-resistant film can be measured by observation with a transmission electron microscope or a combination of observation with a transmission electron microscope and energy dispersive X-ray spectroscopy or electron beam energy loss spectroscopy.
  • the chemical conversion treatment is performed by applying a solution containing a compound used for forming an acid-resistant film to the surface of the aluminum alloy foil layer by a bar coating method, a roll coating method, a gravure coating method, a dipping method, etc. This is performed by heating so that the temperature of the film becomes about 70 to 200 ° C.
  • the aluminum alloy foil layer may be previously subjected to a degreasing treatment by an alkali dipping 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 is possible to more efficiently perform the chemical conversion treatment on the surface of the aluminum alloy foil layer.
  • the heat-fusible resin layer 4 corresponds to the innermost layer, and is a layer that heat-fuses the heat-fusible resin layers and seals the battery element when the battery is assembled.
  • the resin component used in the heat-fusible resin layer 4 is not particularly limited as long as it can be heat-sealed, and examples thereof include polyolefins, cyclic polyolefins, carboxylic acid-modified polyolefins, and carboxylic acid-modified cyclic polyolefins. It is done.
  • polystyrene resin examples include polyethylene such as low density polyethylene, medium density polyethylene, high density polyethylene, and linear low density polyethylene; homopolypropylene, block copolymer of polypropylene (for example, block copolymer of propylene and ethylene), polypropylene Polypropylenes such as random copolymers of (for example, random copolymers of propylene and ethylene); ethylene-butene-propylene terpolymers, and the like.
  • polyethylene and polypropylene are preferable.
  • the cyclic polyolefin is a copolymer of an olefin and a cyclic monomer
  • examples of the olefin that is a constituent monomer of the cyclic polyolefin include ethylene, propylene, 4-methyl-1-pentene, butadiene, and isoprene.
  • examples of the cyclic monomer that is a constituent monomer of the cyclic polyolefin include cyclic alkenes such as norbornene; specifically, cyclic dienes such as cyclopentadiene, dicyclopentadiene, cyclohexadiene, and norbornadiene.
  • a cyclic alkene is preferable, and norbornene is more preferable.
  • Styrene can also be a constituent monomer.
  • the carboxylic acid-modified polyolefin is a polymer modified by block polymerization or graft polymerization of the polyolefin with carboxylic acid.
  • Examples of the carboxylic acid used for modification include maleic acid, acrylic acid, itaconic acid, crotonic acid, maleic anhydride, itaconic anhydride and the like.
  • the carboxylic acid-modified cyclic polyolefin is obtained by copolymerizing a part of the monomer constituting the cyclic polyolefin in place of the ⁇ , ⁇ -unsaturated carboxylic acid or its anhydride, or by ⁇ , ⁇ with respect to the cyclic polyolefin.
  • the cyclic polyolefin to be modified with carboxylic acid is the same as described above.
  • the carboxylic acid used for modification is the same as that used for modification of the polyolefin.
  • carboxylic acid-modified polyolefin is preferable; carboxylic acid-modified polypropylene is more preferable.
  • the heat-fusible resin layer 4 may be formed of one kind of resin component alone or may be formed of a blend polymer in which two or more kinds of resin components are combined. Furthermore, the heat-fusible resin layer 4 may be formed of only one layer, but may be formed of two or more layers using the same or different resin components.
  • the heat-fusible resin layer 4 may contain a lubricant or the like as necessary.
  • the lubricant is not particularly limited, and a known lubricant can be used, and examples thereof include those exemplified in the base material layer 1 described above. One type of lubricant may be used alone, or two or more types may be used in combination.
  • the amount of the lubricant present on the surface of the heat-fusible resin layer 4 is not particularly limited. From the viewpoint of improving the moldability of the electronic packaging material, it is preferably 10 mg / kg at a temperature of 24 ° C. and a relative humidity of 50%. m 2 or more and 50 mg / m 2 or less, more preferably 15 mg / m 2 or more and 40 mg / m 2 or less.
  • the thickness of the heat-fusible resin layer 4 is not particularly limited as long as it exhibits a function as a heat-fusible resin layer, but is preferably 60 ⁇ m or less, more preferably 15 ⁇ m or more and 40 ⁇ m or less.
  • the adhesive layer 5 is a layer provided between the aluminum alloy foil layer 3 and the heat-fusible resin layer 4 as necessary in order to firmly bond them.
  • the adhesive layer 5 is formed of a resin capable of bonding the aluminum alloy foil layer 3 and the heat-fusible resin layer 4.
  • the resin used for forming the adhesive layer 5 the same adhesive mechanism and the same types of adhesive components as those exemplified for the adhesive layer 2 can be used.
  • polyolefin resins such as polyolefin, cyclic polyolefin, carboxylic acid-modified polyolefin, carboxylic acid-modified cyclic polyolefin exemplified in the above-mentioned heat-fusible resin layer 4 can also be used. .
  • the polyolefin is preferably a carboxylic acid-modified polyolefin, and particularly preferably a carboxylic acid-modified polypropylene.
  • the adhesive layer 5 is a cured resin composition containing an acid-modified polyolefin and a curing agent. It may be a thing.
  • Preferred examples of the acid-modified polyolefin include the same carboxylic acid-modified polyolefin and carboxylic acid-modified cyclic polyolefin exemplified in the heat-fusible resin layer 4.
  • the curing agent is not particularly limited as long as it can cure the acid-modified polyolefin.
  • the curing agent include an epoxy curing agent, a polyfunctional isocyanate curing agent, a carbodiimide curing agent, and an oxazoline curing agent.
  • the epoxy curing agent is not particularly limited as long as it is a compound having at least one epoxy group.
  • examples of the epoxy curing agent include epoxy resins such as bisphenol A diglycidyl ether, modified bisphenol A diglycidyl ether, novolac glycidyl ether, glycerin polyglycidyl ether, and polyglycerin polyglycidyl ether.
  • the polyfunctional isocyanate curing agent is not particularly limited as long as it is a compound having two or more isocyanate groups.
  • Specific examples of the polyfunctional isocyanate-based curing agent include isophorone diisocyanate (IPDI), hexamethylene diisocyanate (HDI), tolylene diisocyanate (TDI), diphenylmethane diisocyanate (MDI), those obtained by polymerizing or nurating these, Examples thereof include mixtures and copolymers with other polymers.
  • the carbodiimide curing agent is not particularly limited as long as it is a compound having at least one carbodiimide group (—N ⁇ C ⁇ N—).
  • a polycarbodiimide compound having at least two carbodiimide groups is preferable.
  • the oxazoline-based curing agent is not particularly limited as long as it is a compound having an oxazoline skeleton.
  • Specific examples of the oxazoline-based curing agent include Epocros series manufactured by Nippon Shokubai Co., Ltd.
  • the curing agent may be composed of two or more kinds of compounds.
  • the content of the curing agent in the resin composition forming the adhesive layer 5 is preferably in the range of 0.1% by mass or more and 50% by mass or less, and in the range of 0.1% by mass or more and 30% by mass or less. More preferably, it is more preferably in the range of 0.1% by mass or more and 10% by mass or less.
  • the thickness of the adhesive layer 5 is not particularly limited as long as it functions as an adhesive layer. However, when the adhesive exemplified in the adhesive layer 2 is used, it is preferably 2 ⁇ m or more and 10 ⁇ m or less, more preferably 2 ⁇ m. Above, 5 micrometers or less are mentioned. Moreover, when using resin illustrated by the heat-fusible resin layer 4, Preferably they are 2 micrometers or more and 50 micrometers or less, More preferably, they are 10 micrometers or more and 40 micrometers or less.
  • a cured product of an acid-modified polyolefin and a curing agent it is preferably 30 ⁇ m or less, more preferably 0.1 ⁇ m or more and 20 ⁇ m or less, and further preferably 0.5 ⁇ m or more and 5 ⁇ m or less.
  • the adhesive layer 5 is a cured product of a resin composition containing an acid-modified polyolefin and a curing agent, the adhesive layer 5 can be formed by applying the resin composition and curing it by heating or the like.
  • the base material layer 1 is optionally formed (the aluminum alloy of the base material layer 1). If necessary, a surface coating layer (not shown) may be provided on the side opposite to the foil layer 3.
  • a surface coating layer is a layer located in the outermost layer when a battery is assembled.
  • the surface coating layer can be formed of, for example, polyvinylidene chloride, polyester resin, urethane resin, acrylic resin, epoxy resin, or the like. Of these, the surface coating layer is preferably formed of a two-component curable resin. Examples of the two-component curable resin that forms the surface coating layer include a two-component curable urethane resin, a two-component curable polyester resin, and a two-component curable epoxy resin. Moreover, you may mix
  • Examples of the additive include fine particles having a particle size of 0.5 nm to 5 ⁇ m.
  • the material of the additive is not particularly limited, and examples thereof include metals, metal oxides, inorganic substances, and organic substances.
  • the shape of the additive is not particularly limited, and examples thereof include a spherical shape, a fiber shape, a plate shape, an indeterminate shape, and a balloon shape.
  • Specific additives include talc, silica, graphite, kaolin, montmorilloid, montmorillonite, synthetic mica, hydrotalcite, silica gel, zeolite, aluminum hydroxide, magnesium hydroxide, zinc oxide, magnesium oxide, aluminum oxide, Neodymium oxide, antimony oxide, titanium oxide, cerium oxide, calcium sulfate, barium sulfate, calcium carbonate, calcium silicate, lithium carbonate, calcium benzoate, calcium oxalate, magnesium stearate, alumina, carbon black, carbon nanotubes, high Melting
  • money, aluminum, copper, nickel etc. are mentioned.
  • additives may be used individually by 1 type, and may be used in combination of 2 or more type.
  • silica, barium sulfate, and titanium oxide are preferable from the viewpoints of dispersion stability and cost.
  • the surface of the additive may be subjected to various surface treatments such as insulation treatment and high dispersibility treatment.
  • the method for forming the surface coating layer is not particularly limited, and examples thereof include a method of applying a two-component curable resin for forming the surface coating layer on one surface of the base material layer 1.
  • the additive may be added to the two-component curable resin, mixed, and then applied.
  • the content of the additive in the surface coating layer is not particularly limited, but is preferably about 0.05 to 1.0% by mass, more preferably about 0.1 to 0.5% by mass.
  • the thickness of the surface coating layer is not particularly limited as long as the battery packaging material satisfies the above physical properties while exhibiting the above function as the surface coating layer.
  • the thickness is 0.5 ⁇ m or more and 10 ⁇ m or less, preferably 1 ⁇ m or more. 5 micrometers or less are mentioned.
  • the production method of the battery packaging material of the present invention is not particularly limited as long as a laminate in which layers of a predetermined composition are laminated is obtained.
  • At least the base material layer 1 and an aluminum alloy The aluminum alloy which comprises the process of laminating
  • each layer is laminated, thereby the battery packaging of the present invention.
  • the material can be manufactured.
  • the composition of the aluminum alloy constituting the aluminum alloy foil layer is Si: 0.08 mass% or more and 0.60 mass% or less, Fe: 0.1 to 0.7% by mass, Cu: 0.10 to 0.20% by mass, Mn: 0.10 to 1.0% by mass, Zn: 0.05 Mass% or more and 0.15 mass% or less, V: 0.05 mass% or less (that is, V: 0.00 mass% or more and 0.05 mass% or less, V may not be included), Ti : 0.03% by mass or less (that is, Ti: 0.00% by mass or more and 0.03% by mass or less, and Ti may not be contained) is preferably used. .
  • a laminate in which the base material layer 1, the adhesive layer 2, and the aluminum alloy foil layer 3 are laminated in this order (hereinafter also referred to as “laminate A”) is formed.
  • the laminate A is formed by gravure coating an adhesive used for forming the adhesive layer 2 on the base material layer 1 or on the aluminum alloy foil layer 3 whose surface is subjected to chemical conversion treatment as necessary.
  • a coating method such as a method or a roll coating method
  • the aluminum alloy foil layer 3 or the base material layer 1 can be laminated and the adhesive layer 2 can be cured by a dry laminating method.
  • the heat-fusible resin layer 4 is laminated on the aluminum alloy foil layer 3 of the laminate A.
  • the resin component constituting the heat-fusible resin layer 4 is applied to the aluminum alloy foil layer 3 of the laminate A by a gravure coating method. It may be applied by a method such as roll coating.
  • the adhesive layer 5 is provided between the aluminum alloy foil layer 3 and the heat-fusible resin layer 4, for example, (1) the adhesive layer 5 and the heat-sealable layer are formed on the aluminum alloy foil layer 3 of the laminate A.
  • a method of laminating the heat-fusible resin layer 4 previously formed into a sheet on the adhesive layer 5 by a thermal laminating method, and (4) an aluminum alloy of the laminate A Foil layer 3 and pre-sea A method of sandwiching the laminate A and the heat-fusible resin layer 4 through the adhesive layer 5 (sandwich) while pouring the molten adhesive layer 5 between the heat-fusible resin layer 4 formed into a film (sandwich) Laminating method).
  • the surface coating layer is laminated on the surface of the base material layer 1 opposite to the aluminum alloy foil layer 3.
  • the surface coating layer can be formed, for example, by applying the above-described resin for forming the surface coating layer to the surface of the base material layer 1.
  • the order of the step of laminating the aluminum alloy foil layer 3 on the surface of the base material layer 1 and the step of laminating the surface coating layer on the surface of the base material layer 1 are not particularly limited.
  • the aluminum alloy foil layer 3 may be formed on the surface of the base material layer 1 opposite to the surface coating layer.
  • each layer constituting the laminate improves or stabilizes film forming properties, lamination processing, suitability for final processing of secondary products (pouching, embossing), and the like as necessary. Therefore, surface activation treatment such as corona treatment, blast treatment, oxidation treatment, ozone treatment may be performed.
  • the battery packaging material of the present invention is used in a package for sealing and housing battery elements such as a positive electrode, a negative electrode, and an electrolyte. That is, a battery element including at least a positive electrode, a negative electrode, and an electrolyte can be accommodated in a package formed of the battery packaging material of the present invention to obtain a battery.
  • a battery element including at least a positive electrode, a negative electrode, and an electrolyte is formed using the battery packaging material of the present invention, with the metal terminals connected to each of the positive electrode and the negative electrode protruding outward.
  • a flange portion region where the heat-fusible resin layers are in contact with each other
  • heat-sealing the heat-fusible resin layers of the flange portion to seal the battery
  • a battery using the packaging material is provided.
  • the battery packaging material of the present invention may be used for either a primary battery or a secondary battery, but is preferably a secondary battery.
  • the type of secondary battery to which the battery packaging material of the present invention is applied is not particularly limited.
  • a lithium ion battery, a lithium ion polymer battery, a lead battery, a nickel / hydrogen battery, a nickel / cadmium battery Nickel / iron livestock batteries, nickel / zinc livestock batteries, silver oxide / zinc livestock batteries, metal-air batteries, multivalent cation batteries, capacitors, capacitors and the like are suitable applications for the battery packaging material of the present invention.
  • Example 1-10 and Comparative Example 1-10) ⁇ Manufacture of battery packaging materials>
  • Aluminum alloy foils (thicknesses shown in Table 1) formed of aluminum alloys AD each having the composition shown in Table 1 were dried on a base material layer (thickness 12 ⁇ m) made of a biaxially stretched nylon film. Lamination was performed by a laminating method. Specifically, a two-component urethane adhesive (a polyol compound and an aromatic isocyanate compound) is applied to one surface of each aluminum alloy foil described later, and an adhesive layer (thickness 3 ⁇ m) is formed on the aluminum alloy foil layer. Formed.
  • a two-component urethane adhesive a polyol compound and an aromatic isocyanate compound
  • an aging treatment was performed to produce a base material layer / adhesive layer / aluminum alloy foil layer laminate.
  • the chemical conversion treatment was performed on both surfaces of the aluminum alloy foil.
  • the chemical conversion treatment of the aluminum alloy foil is performed on both sides of the aluminum foil by a roll coating method so that the treatment amount of the phenol resin, the chromium fluoride compound, and phosphoric acid is 10 mg / m 2 (dry mass). It was performed by applying and baking.
  • a sample was prepared by cutting each of the battery packaging materials obtained above into a rectangle having a width of 80 mm and a length of 120 mm.
  • a molding die corner R2.3 female mold
  • a molding mold corner R2 male mold
  • a molding depth of 5.0 mm The sample was cold-molded under the conditions of a pressing pressure of 0.4 MPa and a molding depth of 5.0 mm.
  • a polyethylene plate having a length of 28 mm, a width of 48 mm, and a height of 5.0 mm is inserted into the space of the sample formed by molding (so that the molding depth direction of the space coincides with the height direction of the plate). Inserted) and the shape of the four-direction ridgeline portion A (see FIG. 4) formed in the sample by molding did not change, “OK”, changed (that is, the ridgeline portion A was originally bent) The case of “returning to (5)” was set to “NG”, and the appearance of the ridge line portion was evaluated. The results are shown in Table 2.
  • JIS grade 1 scale (1) was adjusted so Next, another JIS class 1 scale (2) is placed in a direction perpendicular to the scale, and the edge of the flexure of the ridge line portion A where the deflection is the largest and the plane direction of the JIS class 1 scale (1) The distance w was measured. The distance w was measured on two sides of 50 mm having a longer distance among the four sides of 30 mm ⁇ 50 mm, and the maximum value having the larger value was defined as the distance w.
  • ⁇ Measurement of loop stiffness value> For measurement of the loop stiffness value, a trade name “LOOP STIFFNESS TESTER” manufactured by Toyo Seiki Co., Ltd. was used as a measuring device. Each of the battery packaging materials obtained above was cut into a size of 250 mm in the length direction (flow direction during film formation: MD) and 15 mm in the width direction to prepare a test piece (battery packaging material 10). Next, as shown in FIG. 6, the base material layer of the test piece is placed on the outer side, and both ends of the test piece are sandwiched and fixed between the clips 20, and a circular shape having a circumference of 90 mm is provided at the center in the length direction. A loop was made.
  • the loop was pushed from the opposite side of the clip 20 at a pushing speed of 3.3 mm / sec, and the load required to reach a pushing distance of 15 mm was taken as the loop stiffness value. Since the unit measured by the measuring apparatus is “g”, the result converted to 1 kgf ⁇ 9.8 N is shown in Table 2. In addition, about the length of a test piece, if it is the length which can be pinched
  • the aluminum alloys constituting the aluminum alloy foil layer are the aluminum alloy foils A, B, In the case of C, it can be seen that the ridge portion after molding has a small deflection and is excellent in shape stability.

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  • 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)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne un matériau de revêtement de batterie qui présente une excellente stabilité de forme même après moulage. Le matériau de revêtement de batterie comprend un stratifié comportant au moins une couche de base, une couche de feuille d'alliage d'aluminium et une couche de résine de liaison thermique, dans cet ordre, la composition de l'alliage d'aluminium constituant la couche de feuille d'alliage d'aluminium satisfaisant Si : 0,06 % en poids ou moins, Fe : 0,70 % en poids ou moins, Cu : 0,25 % en poids ou moins, Mn : 0,05 % en poids à 1,50 % en poids , Zn : 0,25 % en poids ou moins, V : 0,05 % en poids ou moins, et Ti : 0,03 % en poids ou moins.
PCT/JP2017/016789 2016-04-27 2017-04-27 Matériau de revêtement de batterie, son procédé de fabrication, batterie et son procédé de fabrication Ceased WO2017188396A1 (fr)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019021429A (ja) * 2017-07-12 2019-02-07 大日本印刷株式会社 電池用包装材料及び電池
CN111512463A (zh) * 2017-12-20 2020-08-07 大日本印刷株式会社 电池用包装材料和电池
JPWO2021132562A1 (fr) * 2019-12-25 2021-07-01
WO2022080233A1 (fr) * 2020-10-12 2022-04-21 東洋アルミニウム株式会社 Feuille d'alliage d'aluminium et son procédé de fabrication
JP2023005826A (ja) * 2021-06-29 2023-01-18 大日本印刷株式会社 蓄電デバイス用外装材、その製造方法、及び蓄電デバイス
WO2024122592A1 (fr) * 2022-12-07 2024-06-13 Ｔｏｐｐａｎホールディングス株式会社 Matériau de boîtier externe pour dispositifs de stockage d'énergie, et dispositif de stockage d'énergie
EP4439811A4 (fr) * 2021-12-24 2024-11-06 LG Energy Solution, Ltd. Stratifié de film en poche et boîtier de batterie fabriqué à l'aide de celui-ci

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JP2019021429A (ja) * 2017-07-12 2019-02-07 大日本印刷株式会社 電池用包装材料及び電池
CN111512463A (zh) * 2017-12-20 2020-08-07 大日本印刷株式会社 电池用包装材料和电池
CN114902472A (zh) * 2019-12-25 2022-08-12 大日本印刷株式会社 蓄电装置用外包装材料、其制造方法和蓄电装置
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JPWO2021132562A1 (fr) * 2019-12-25 2021-07-01
JP7160217B2 (ja) 2019-12-25 2022-10-25 大日本印刷株式会社 蓄電デバイス用外装材、その製造方法、及び蓄電デバイス
WO2022080233A1 (fr) * 2020-10-12 2022-04-21 東洋アルミニウム株式会社 Feuille d'alliage d'aluminium et son procédé de fabrication
JP2022063563A (ja) * 2020-10-12 2022-04-22 東洋アルミニウム株式会社 アルミニウム合金箔及びその製造方法
KR20230086700A (ko) 2020-10-12 2023-06-15 도요 알루미늄 가부시키가이샤 알루미늄 합금박 및 그 제조 방법
JP2023005826A (ja) * 2021-06-29 2023-01-18 大日本印刷株式会社 蓄電デバイス用外装材、その製造方法、及び蓄電デバイス
JP7746709B2 (ja) 2021-06-29 2025-10-01 大日本印刷株式会社 蓄電デバイス用外装材、その製造方法、及び蓄電デバイス
EP4439811A4 (fr) * 2021-12-24 2024-11-06 LG Energy Solution, Ltd. Stratifié de film en poche et boîtier de batterie fabriqué à l'aide de celui-ci
WO2024122592A1 (fr) * 2022-12-07 2024-06-13 Ｔｏｐｐａｎホールディングス株式会社 Matériau de boîtier externe pour dispositifs de stockage d'énergie, et dispositif de stockage d'énergie

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