WO2020235534A1 - Matériau extérieur pour dispositif de stockage d'énergie, procédé de fabrication associé, dispositif de stockage d'énergie et film de polyamide - Google Patents

Matériau extérieur pour dispositif de stockage d'énergie, procédé de fabrication associé, dispositif de stockage d'énergie et film de polyamide Download PDF

Info

Publication number
WO2020235534A1
WO2020235534A1 PCT/JP2020/019675 JP2020019675W WO2020235534A1 WO 2020235534 A1 WO2020235534 A1 WO 2020235534A1 JP 2020019675 W JP2020019675 W JP 2020019675W WO 2020235534 A1 WO2020235534 A1 WO 2020235534A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
power storage
storage device
base material
exterior material
Prior art date
Application number
PCT/JP2020/019675
Other languages
English (en)
Japanese (ja)
Inventor
寛典 上所
天野　真
立沢　雅博
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 JP2020547255A priority Critical patent/JP6809657B1/ja
Priority to CN202080036390.1A priority patent/CN113825638B/zh
Publication of WO2020235534A1 publication Critical patent/WO2020235534A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—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
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • 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
    • 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
    • H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
    • 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 a power storage device, a manufacturing method thereof, a power storage device, and a polyamide film.
  • an exterior material is an indispensable member for sealing the power storage device elements such as electrodes and electrolytes.
  • a metal exterior material has been widely used as an exterior material for a power storage device.
  • recesses are generally formed by cold forming, and storage device elements such as electrodes and electrolytic solutions are arranged in the space formed by the recesses to form a thermosetting resin.
  • storage device elements such as electrodes and electrolytic solutions are arranged in the space formed by the recesses to form a thermosetting resin.
  • the power storage device In various products such as electrical equipment, the power storage device is firmly fixed to the product housing with double-sided tape or adhesive. Therefore, when the power storage device is removed from the housing of the product, a large external force is applied to the power storage device. Specifically, in general, the power storage device is removed from the housing by using a metal spatula or the like, and a large external force is applied to the power storage device. If a large external force is applied to the exterior material for the energy storage device made of a film-like laminate when the energy storage device is removed, the exterior material for the energy storage device may be damaged.
  • the present disclosure discloses an exterior material for a power storage device in which damage to the exterior material for the power storage device is suppressed when the power storage device fixed to the housing with double-sided tape or the like is peeled off from the housing.
  • the main purpose is to provide.
  • the inventors of the present disclosure have made diligent studies to solve the above problems.
  • it is composed of a laminate having at least a base material layer, a barrier layer, and a thermosetting resin layer in order from the outside, and the base material layer contains a polyamide film, and Fourier transform infrared spectroscopy.
  • the exterior material for a power storage device in which the crystallization index of the polyamide film measured from the outside of the base material layer by the ATR method of the method is equal to or higher than a predetermined value covers the power storage device fixed to the housing with double-sided tape or the like. It has been found that damage to the exterior material for the power storage device is suppressed when the material is peeled off from the body.
  • the present disclosure has been completed by further studies based on these findings. That is, the present disclosure provides the inventions of the following aspects. From the outside, it is composed of a laminate having at least a base material layer, a barrier layer, and a thermosetting resin layer.
  • the base material layer contains a polyamide film and An exterior material for a power storage device, wherein the crystallization index of the polyamide film measured from the outside of the base material layer by the ATR method of Fourier transform infrared spectroscopy is 1.50 or more.
  • Exterior materials can be provided. Further, according to the present disclosure, a method for manufacturing an exterior material for a power storage device, a power storage device using the exterior material for the power storage device, and a polyamide film suitable for use as a base material layer for the exterior material for the power storage device are provided. It can also be provided.
  • the exterior material for a power storage device of the present disclosure is composed of a laminate having at least a base material layer, a barrier layer, and a thermosetting resin layer in this order from the outside, and the base material layer contains a polyamide film.
  • the crystallization index of the polyamide film measured from the outside of the base material layer by the ATR method of Fourier transform infrared spectroscopy is 1.50 or more.
  • the exterior material for a power storage device of the present disclosure is prevented from being damaged when the power storage device fixed to the housing with double-sided tape or the like is peeled off from the housing.
  • the exterior material for the power storage device of the present disclosure will be described in detail.
  • the numerical range indicated by “-” means “greater than or equal to” and “less than or equal to”.
  • the notation of 2 to 15 mm means 2 mm or more and 15 mm or less.
  • the exterior material 10 for power storage device of the present disclosure is, for example, as shown in FIG. 1, in order from the outside, a base material layer 1, a barrier layer 3, and a thermosetting resin layer 4. It is composed of a laminated body comprising.
  • the base material layer 1 is on the outermost layer side
  • the thermosetting resin layer 4 is on the innermost layer.
  • the peripheral portion is heat-sealed with the thermosetting resin layers 4 of the power storage device exterior material 10 facing each other.
  • the power storage device element is housed in the space formed by.
  • the heat-sealing resin layer 4 side is inside the barrier layer 3 and the base material layer 1 side is more than the barrier layer 3 with the barrier layer 3 as a reference. It is the outside.
  • the exterior material 10 for a power storage device is used as necessary for the purpose of enhancing the adhesiveness between the base material layer 1 and the barrier layer 3 and the like. It may have an adhesive layer 2. Further, for example, as shown in FIGS. 3 and 4, the adhesive layer 5 is required between the barrier layer 3 and the thermosetting resin layer 4 for the purpose of enhancing the adhesiveness between the layers. May have. Further, as shown in FIG. 5, a surface coating layer 6 or the like may be provided on the outside of the base material layer 1 (the side opposite to the thermosetting resin layer 4 side), if necessary.
  • the thickness of the laminate constituting the exterior material 10 for the power storage device is not particularly limited, but the upper limit is preferably about 180 ⁇ m or less, about 155 ⁇ m or less, about 120 ⁇ m or less from the viewpoint of cost reduction, energy density improvement, and the like. From the viewpoint of maintaining the function of the exterior material for the power storage device, which is to protect the power storage device element, the lower limit is preferably about 35 ⁇ m or more, about 45 ⁇ m or more, and about 60 ⁇ m or more, and the preferable range is about 60 ⁇ m or more.
  • 60 to 120 ⁇ m is particularly preferable.
  • the ratio of the total thickness of the adhesive layer 5, the thermosetting resin layer 4, and the surface coating layer 6 provided as needed is preferably 90% or more, more preferably 95% or more. More preferably, it is 98% or more.
  • the exterior material 10 for a power storage device of the present disclosure includes a base material layer 1, an adhesive layer 2, a barrier layer 3, an adhesive layer 5, and a thermosetting resin layer 4, the exterior for the power storage device
  • the ratio of the total thickness of each of these layers to the thickness (total thickness) of the laminate constituting the material 10 is preferably 90% or more, more preferably 95% or more, and further preferably 98% or more.
  • the base material layer 1 of the exterior material 10 for a power storage device of the present disclosure contains a polyamide film, and the crystallization index of the polyamide film measured from the outside of the base material layer 1 by the ATR method of Fourier transform infrared spectroscopy. However, it is 1.50 or more.
  • the method for measuring the crystallization index of the base material layer 1 of the exterior material 10 for a power storage device of the present disclosure is as follows.
  • a sample is prepared by cutting the exterior material for a power storage device into a square of 100 mm ⁇ 100 mm.
  • the surface of the polyamide film located on the outside of the obtained sample is subjected to infrared absorption spectrum measurement in an environment of a temperature of 25 ° C. and a relative humidity of 50% by using the ATR measurement mode of FT-IR.
  • Thermo Fisher Scientific Co., Ltd .: Nicolet iS10 can be used as the apparatus.
  • the peak intensity P around 1200 cm -1 derived from the absorption of ⁇ crystals of nylon and the peak intensity Q around 1370 cm -1 derived from the absorption unrelated to the crystals were measured, and the peak intensity Q was measured.
  • the intensity ratio X P / Q of the peak intensity P with respect to the crystallization index is calculated.
  • the power storage device exterior material 10 When the outer surface of the power storage device exterior material 10 is made of the polyamide film of the base material layer 1, the power storage device exterior material 10 can be used as it is as a measurement target of the crystallization index. Further, when the base material layer 1 has a multilayer structure as described later and a resin film (for example, polyester film) different from the polyamide film is located outside the polyamide film, or when the base material layer 1 has a multilayer structure.
  • the outer surface of the exterior material 10 for a power storage device is not composed of the polyamide film of the base material layer 1, such as when the surface coating layer 6 described later is laminated on the outside, the position is located outside the polyamide film.
  • the crystallization index can be measured in a state where the layer is removed from the exterior material 10 for a power storage device and the surface of the polyamide film is exposed.
  • the crystallization index may be 1.50 or more, but from the viewpoint of more effectively suppressing damage to the power storage device exterior material during the above-mentioned peeling. Therefore, it is more preferably 1.55 or more, further preferably 1.60 or more, and particularly preferably 1.65 or more.
  • the upper limit of the crystallization index is not particularly limited, and examples thereof include 2.50 or less and 1.80 or less.
  • Preferred ranges of the crystallization index include, for example, 1.50 to 2.50, 1.60 to 2.50, 1.65 to 2.50, 1.50 to 1.80, and 1.60 to 1. 80, 1.65 to 1.80 and the like can be mentioned.
  • the draw ratio, the heat fixing temperature, and the post-heating in the manufacturing process of the polyamide film are used.
  • a method of promoting crystallization (promoting the formation of ⁇ -crystals) depending on the temperature and time of the film can be mentioned.
  • the base material layer 1 is a layer provided for the purpose of exerting a function as a base material of an exterior material for a power storage device.
  • the base material layer 1 is located on the outer layer side of the exterior material for the power storage device.
  • the base material layer 1 contains a polyamide film.
  • the crystallization index of the polyamide film measured from the outside of the base material layer 1 by the ATR method of Fourier transform infrared spectroscopy is 1.50 or more.
  • the polyamide forming the polyamide film may be any polyamide having ⁇ crystals, and specifically, nylon 6, nylon 66, nylon 46, an aliphatic polyamide such as a copolymer of nylon 6 and nylon 66, or the like may be used. Can be mentioned. These polyamides may be used alone or in combination of two or more.
  • the polyamide film is preferably a nylon film.
  • the polyamide film may be an unstretched film or a stretched film.
  • the base material layer 1 contains an unstretched film
  • a resin polyamide
  • Examples of the method for applying the resin include a roll coating method, a gravure coating method, and an extrusion coating method.
  • the base material layer 1 is a stretched film, a stretched film prepared in advance is bonded when laminating the layers of the exterior material 10 for a power storage device.
  • Examples of the stretched film include a uniaxially stretched film and a biaxially stretched film, and a biaxially stretched film is preferable.
  • Examples of the stretching method for forming the biaxially stretched film include a sequential biaxial stretching method, an inflation method, and a simultaneous biaxial stretching method.
  • the polyamide film is particularly preferably a biaxially stretched nylon film.
  • a polyamide film having a crystallization index of 1.50 or more measured by the ATR method of Fourier transform infrared spectroscopy can be produced as the base material layer 1.
  • the crystallization index can be increased by applying heat to the polyamide film in the manufacturing process of the exterior material 10 for the power storage device, and the crystallization index can be set to 1.50 or more.
  • the crystallization index measured by the ATR method of Fourier transform infrared spectroscopy is 1.50 or more. It is preferably produced by using a certain polyamide film as the base material layer 1.
  • the present disclosure is made by using a polyamide film whose crystallization index has been adjusted to 1.50 or more in advance for the base material layer 1 and laminating it with each layer such as the barrier layer 3 and the thermosetting resin layer 4. It is preferable to manufacture the exterior material 10 for a power storage device. As shown in Examples described later, the polyamide film that is laminated on the exterior material 10 for the power storage device and contained in the base material layer 1 is more than the polyamide film before being applied to the exterior material 10 for the power storage device. The crystallization index of the film can be increased.
  • the thickness of the polyamide film is preferably about 3 ⁇ m or more, more preferably about 10 ⁇ m or more, and more preferably about 10 ⁇ m or more, from the viewpoint of more effectively suppressing damage to the exterior material for the power storage device during the above-mentioned peeling. It is preferably about 50 ⁇ m or less, more preferably about 35 ⁇ m or less, and preferred ranges include about 3 to 50 ⁇ m, about 3 to 35 ⁇ m, about 10 to 50 ⁇ m, and about 10 to 35 ⁇ m, among which 10 to 35 ⁇ m. The degree is particularly preferable.
  • the base material layer 1 may further have a resin film different from the polyamide film.
  • the resin that forms a resin film different from the polyamide film include resins such as polyester, polyolefin, epoxy resin, acrylic resin, fluororesin, polyurethane, silicon resin, and phenol resin, and modified products of these resins. .. Further, the resin may be a copolymer of these resins, or may be a modified product of the copolymer. Further, it may be a mixture of these resins. Among these, polyester is preferable.
  • polyester examples include polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polybutylene naphthalate, polyethylene isophthalate, and copolymerized polyester.
  • copolymerized polyester examples include a copolymerized polyester containing ethylene terephthalate as a repeating unit.
  • copolymer polyester (hereinafter abbreviated after polyethylene (terephthalate / isophthalate)), polyethylene (terephthalate / adipate), polyethylene (terephthalate / terephthalate / (Sodium sulfoisophthalate), polyethylene (terephthalate / sodium isophthalate), polyethylene (terephthalate / phenyl-dicarboxylate), polyethylene (terephthalate / decandicarboxylate) and the like.
  • These polyesters may be used alone or in combination of two or more. Of these, polyethylene terephthalate and polybutylene terephthalate are preferable.
  • the polyester film is preferably a stretched polyester film, and more preferably a biaxially stretched polyester film.
  • the polyester film is particularly preferably a biaxially stretched polyethylene terephthalate film or a biaxially stretched polybutylene terephthalate film.
  • the thickness of the other resin film is not particularly limited as long as it does not interfere with the effect of the present invention, and is preferably about 3 ⁇ m or more. It is preferably about 10 ⁇ m or more, preferably about 50 ⁇ m or less, more preferably about 35 ⁇ m or less, and the preferred range is about 3 to 50 ⁇ m, about 3 to 35 ⁇ m, about 10 to 50 ⁇ m, and about 10 to 35 ⁇ m. Among these, about 10 to 35 ⁇ m is particularly preferable.
  • the base material layer 1 may be a single layer or may be composed of two or more layers as long as it contains a polyamide film, and from the viewpoint of thinning the exterior material 10 for a power storage device, the polyamide film It is preferably a single layer.
  • the base material layer 1 may be a laminated body in which a resin film is laminated with an adhesive or the like, or the resin is co-extruded to form two or more layers. It may be a laminated body of the resin film. Further, the laminated body of the resin film obtained by co-extruding the resin into two or more layers may be used as the base material layer 1 without being stretched, or may be uniaxially stretched or biaxially stretched as the base material layer 1.
  • the laminate of two or more layers of resin film in the base material layer 1 include a laminate of a polyester film and a nylon film, a laminate of two or more layers of nylon film, and the like, preferably stretched nylon.
  • a laminate of a film and a stretched polyester film, and a laminate of two or more layers of stretched nylon film are preferable.
  • the base material layer 1 is a laminate of two layers of resin film
  • a laminate of polyamide resin film and polyamide resin film, or a laminate of polyester resin film and polyamide resin film is preferable, and nylon film and nylon film.
  • a laminate or a laminate of a polyethylene terephthalate film and a nylon film is more preferable.
  • the polyester resin film is the base material layer 1. It is preferably located in the outermost layer.
  • the two or more layers of resin films may be laminated via an adhesive.
  • Preferred adhesives include those similar to the adhesives exemplified in the adhesive layer 2 described later.
  • the method of laminating two or more layers of resin films is not particularly limited, and known methods can be adopted. Examples thereof include a dry laminating method, a sandwich laminating method, an extrusion laminating method, and a thermal laminating method, and a dry laminating method is preferable.
  • the laminating method can be 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. Examples of the anchor coat layer include the same adhesives as those exemplified in the adhesive layer 2 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 a lubricant, a flame retardant, an antiblocking agent, an antioxidant, a light stabilizer, a tackifier, and an antistatic agent are present on at least one of the surface and the inside of the base material layer 1. Good. Only one type of additive may be used, or two or more types may be mixed and used.
  • the lubricant is present on the surface of the base material layer 1.
  • the lubricant is not particularly limited, but an amide-based lubricant is preferable.
  • Specific examples of the amide-based lubricant include saturated fatty acid amides, unsaturated fatty acid amides, substituted amides, methylol amides, saturated fatty acid bisamides, unsaturated fatty acid bisamides, fatty acid ester amides, and aromatic bisamides.
  • saturated fatty acid amide examples include lauric acid amide, palmitic acid amide, stearic acid amide, bechenic acid amide, hydroxystearic acid amide and the like.
  • unsaturated fatty acid amides include oleic acid amides and erucic acid amides.
  • substituted amide examples include N-oleyl palmitic acid amide, N-stearyl stearic acid amide, N-stearyl oleic acid amide, N-oleyl stearic acid amide, N-stearyl erucate amide and the like.
  • methylolamide examples include methylolstearic acid amide.
  • saturated fatty acid bisamide examples include methylene bisstearic acid amide, ethylene biscapric acid amide, ethylene bislauric acid amide, ethylene bisstearic acid amide, ethylene bishydroxystearic acid amide, ethylene bisbechenic acid amide, and hexamethylene bisstearic.
  • saturated fatty acid bisamide examples include acid amides, hexamethylene bisbechenic acid amides, hexamethylene hydroxystearic acid amides, N, N'-distearyl adipate amides, and N, N'-distearyl sebacic acid amides.
  • unsaturated fatty acid bisamides include ethylene bisoleic acid amide, ethylene biserucic acid amide, hexamethylene bisoleic acid amide, N, N'-diorail adipic acid amide, and N, N'-diorail sebacic acid amide. And so on.
  • Specific examples of the fatty acid ester amide include stearoamide ethyl stearate and the like.
  • Specific examples of the aromatic bisamide include m-xylylene bisstearic acid amide, m-xylylene bishydroxystearic acid amide, and N, N'-distearyl isophthalic acid amide.
  • 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 about 3 mg / m 2 or more, more preferably about 4 to 15 mg / m 2 , and further preferably 5 to 14 mg. / M 2 is mentioned.
  • the lubricant existing on the surface of the base material layer 1 may be one in which the lubricant contained in the resin constituting the base material layer 1 is exuded, or one in which the lubricant is applied to the surface of the base material layer 1. You may.
  • the total thickness of the base material layer 1 is not particularly limited as long as it functions as a base material, and examples thereof include about 3 to 50 ⁇ m, preferably about 10 to 35 ⁇ m.
  • the exterior material for a power storage device of the present disclosure is placed on the base material layer 1 (opposite to the barrier layer 3 side of the base material layer 1) as necessary for the purpose of improving printability and moldability.
  • a coat layer (not shown) may be provided.
  • the coat layer is provided so as to be in contact with the base material layer 1.
  • the thickness of the coat layer is not particularly limited as long as it exhibits the above-mentioned function as the coat layer, and is, for example, about 0.01 to 0.40 ⁇ m, preferably about 0.01 to 0.30 ⁇ m, and more preferably 0.1. The range is about 0.30 ⁇ m. When the thickness is 0.01 ⁇ m or more, a layer having a uniform film thickness can be formed on the base material layer 1. As a result, it is possible to enable uniform printing without causing unevenness in the printability of the exterior material for the power storage device of the present disclosure, and to obtain uniform moldability.
  • the resin forming the coat layer examples include polyvinylidene chloride, vinylidene chloride-vinyl chloride copolymer, polyolefin, acid-modified polyolefin, polyester, epoxy resin, phenol resin, fluororesin, cellulose ester, polyurethane, acrylic resin, and polyamide. And various synthetic resins such as. Among these, polyurethane, polyester and acrylic resin are preferable.
  • the coat layer may contain a lubricant or an additive, if necessary, in order to improve the slipperiness.
  • a lubricant include the same lubricants as those described above.
  • the additive the same additives as those exemplified in the surface coating layer 6 described later are exemplified. The content and particle size of these lubricants and additives are appropriately adjusted according to the thickness of the coat layer.
  • the exterior material for a power storage device of the present disclosure has, if necessary, one side of the base material layer 1 (the barrier layer 3 side of the base material layer 1) for the purpose of improving the adhesiveness with the layer adjacent to the base material layer.
  • a coat layer (not shown) may be provided on both sides of the base material layer 1 on the side opposite to the barrier layer 3). That is, the coat layer provided on the base material layer may be a layer for the purpose of improving printability, moldability, etc., or a layer for the purpose of improving the adhesiveness of the base material layer. May be good.
  • the resin forming the coat layer and the thickness similar to the resin and the thickness of the coat layer described above are exemplified. Further, although the above-mentioned lubricants and additives may be included, it is preferable not to include the lubricants and additives when there is a layer adjacent to the base material layer of the coat layer.
  • the adhesive layer 2 is a layer provided between the base material layer 1 and the barrier layer 3 as necessary for the purpose of enhancing the adhesiveness.
  • the adhesive layer 2 is formed by an adhesive capable of adhering the base material layer 1 and the barrier layer 3.
  • the adhesive used for forming the adhesive layer 2 is not limited, but may be any of a chemical reaction type, a solvent volatilization type, a heat melting type, a hot pressure type and the like. Further, it may be a two-component curable adhesive (two-component adhesive), a one-component curable adhesive (one-component adhesive), or a resin that does not involve a curing reaction. Further, the adhesive layer 2 may be a single layer or a multilayer.
  • 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 resin; Polyolefin such as nylon 6, nylon 66, nylon 12, copolymerized polyamide; polyolefin resin such as polyolefin, cyclic polyolefin, acid-modified polyolefin, acid-modified cyclic polyolefin; Polyvinyl acetate; Cellulose; (meth) acrylic resin; Polyethylene; Polyolefin; Amino resin such as urea resin and melamine resin; Rubber such as chloroprene rubber, nitrile rubber and styrene-butadiene rubber; Silicone resin and the like.
  • polyesters such as polyethylene terephthalate, polybutylene terephthalate, poly
  • adhesive components may be used alone or in combination of two or more.
  • a polyurethane adhesive is preferable.
  • the resin as an adhesive component can be used in combination with an appropriate curing agent to increase the adhesive strength.
  • An appropriate curing agent is selected from polyisocyanate, polyfunctional epoxy resin, oxazoline group-containing polymer, polyamine resin, acid anhydride and the like, depending on the functional group of the adhesive component.
  • polyurethane adhesive examples include a polyurethane adhesive containing a main agent containing a polyol compound and a curing agent containing an isocyanate compound.
  • a polyol such as a polyester polyol, a polyether polyol, and an acrylic polyol is used as a main component, and an aromatic or aliphatic polyisocyanate is used as a curing agent.
  • the polyol compound it is preferable to use a polyester polyol having a hydroxyl group in the side chain in addition to the hydroxyl group at the end of the repeating unit.
  • the adhesive layer 2 is formed of the polyurethane adhesive, excellent electrolyte resistance is imparted to the exterior material for the power storage device, and even if the electrolyte adheres to the side surface, the base material layer 1 is suppressed from peeling off. ..
  • the adhesive layer 2 may contain a colorant, a thermoplastic elastomer, a tackifier, a filler, etc., as long as the adhesiveness is not hindered, the addition of other components is permitted. Since the adhesive layer 2 contains a colorant, the exterior material for the power storage device can be colored. As the colorant, known pigments, dyes and the like can be used. Further, 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 2.
  • organic pigments include azo-based, phthalocyanine-based, quinacridone-based, anthracinone-based, dioxazine-based, indigothioindigo-based, perinone-perylene-based, isowearnine-based, and benzimidazolone-based pigments, which are inorganic.
  • pigments include carbon black pigments, titanium oxide pigments, cadmium pigments, lead pigments, chromium oxide pigments, iron pigments, copper pigments, and other pigments such as mica (mica) fine powder and fish scale foil. Be done.
  • the pigment can be used alone, but two or more kinds can be mixed and used, for example, a mixture of an organic pigment and an inorganic pigment may be used.
  • colorants for example, carbon black is preferable in order to make the appearance of the exterior material for a power storage device black.
  • the average particle size of the pigment is not particularly limited, and examples thereof include about 0.05 to 5 ⁇ m, preferably about 0.08 to 2 ⁇ m.
  • the average particle size of the pigment is the median diameter measured by a laser diffraction / scattering type particle size distribution measuring device.
  • the content of the pigment in the adhesive layer 2 is not particularly limited as long as the exterior material for the power storage device is colored, and examples thereof include about 5 to 60% by mass, preferably 8 to 40% by mass.
  • the thickness of the adhesive layer 2 is not particularly limited as long as the base material layer 1 and the barrier layer 3 can be adhered to each other, but the lower limit is, for example, about 1 ⁇ m or more and about 2 ⁇ m or more, and the upper limit is about 10 ⁇ m or less. , About 5 ⁇ m or less, and preferred ranges include about 1 to 10 ⁇ m, about 1 to 5 ⁇ m, about 2 to 10 ⁇ m, and about 2 to 5 ⁇ m.
  • the colored layer is a layer provided between the base material layer 1 and the barrier layer 3 as needed (not shown).
  • a colored layer may be provided between the base material layer 1 and the adhesive layer 2 and between the adhesive layer 2 and the barrier layer 3. Further, a colored layer may be provided on the outside of the base material layer 1. By providing the coloring layer, the exterior material for the power storage device can be colored.
  • the colored layer can be formed, for example, by applying an ink containing a colorant to the surface of the base material layer 1, the surface of the adhesive layer 2, or the surface of the barrier layer 3.
  • a colorant known pigments, dyes and the like can be used. Further, only one type of colorant may be used, or two or more types may be mixed and used.
  • colorant contained in the colored layer include the same as those exemplified in the column of [Adhesive layer 2].
  • the barrier layer 3 is at least a layer that suppresses the infiltration of water.
  • the barrier layer 3 examples include a metal foil having a barrier property, a thin-film deposition film, a resin layer, and the like.
  • the vapor deposition film examples include a metal vapor deposition film, an inorganic oxide vapor deposition film, a carbon-containing inorganic oxide vapor deposition film, and the like
  • the resin layer includes polymers and tetras mainly composed of polyvinylidene chloride and chlorotrifluoroethylene (CTFE).
  • CTFE chlorotrifluoroethylene
  • TFE fluoroethylene
  • TFE fluoroethylene
  • TFE fluoroalkyl group
  • fluorine-containing resins such as polymers containing a fluoroalkyl unit as a main component
  • ethylene vinyl alcohol copolymers examples include ethylene vinyl alcohol copolymers.
  • examples of the barrier layer 3 include a resin film provided with at least one of these vapor-deposited films and a resin layer.
  • 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 an aluminum alloy, stainless steel, titanium steel, and a steel plate.
  • the metal material includes at least one of an aluminum alloy foil and a stainless steel foil. Is preferable.
  • the aluminum alloy foil is more preferably a soft aluminum alloy foil composed of, for example, an annealed aluminum alloy, and from the viewpoint of further improving the moldability. Therefore, it is preferable that the aluminum alloy foil contains iron.
  • the iron-containing aluminum alloy foil (100% by mass) the iron content is preferably 0.1 to 9.0% by mass, more preferably 0.5 to 2.0% by mass.
  • the iron content is 0.1% by mass or more, an exterior material for a power storage device having more excellent moldability can be obtained.
  • the iron content is 9.0% by mass or less, a more flexible exterior material for a power storage device can be obtained.
  • the soft aluminum alloy foil for example, an aluminum alloy having a composition specified by JIS H4160: 1994 A8021HO, JIS H4160: 1994 A8079HO, JIS H4000: 2014 A8021PO, or JIS H4000: 2014 A8077P-O. Foil is mentioned. Further, if necessary, silicon, magnesium, copper, manganese and the like may be added. Further, softening can be performed by annealing or the like.
  • stainless steel foils examples include austenite-based, ferrite-based, austenite-ferritic-based, martensitic-based, and precipitation-hardened stainless steel foils. Further, from the viewpoint of providing an exterior material for a power storage device having excellent moldability, the stainless steel foil is preferably made of austenitic stainless steel.
  • austenitic stainless steel constituting the stainless steel foil include SUS304, SUS301, and SUS316L, and among these, SUS304 is particularly preferable.
  • the thickness of the barrier layer 3 may at least exhibit a function as a barrier layer that suppresses the infiltration of water, and is, for example, about 9 to 200 ⁇ m.
  • the thickness of the barrier layer 3 is, for example, preferably about 85 ⁇ m or less, more preferably about 50 ⁇ m or less, still more preferably about 40 ⁇ m or less, particularly preferably about 35 ⁇ m or less, and the lower limit is preferably about about.
  • 10 ⁇ m or more, more preferably about 20 ⁇ m or more, more preferably about 25 ⁇ m or more, and preferable ranges of the thickness are about 10 to 85 ⁇ m, about 10 to 50 ⁇ m, about 10 to 40 ⁇ m, about 10 to 35 ⁇ m, and about 20 to.
  • the barrier layer 3 is made of an aluminum alloy foil, the above range is particularly preferable.
  • the upper limit of the thickness of the stainless steel foil is preferably about 60 ⁇ m or less, more preferably about 50 ⁇ m or less, still more preferably about 40 ⁇ m or less. More preferably, it is about 30 ⁇ m or less, particularly preferably about 25 ⁇ m or less, and the lower limit is preferably about 10 ⁇ m or more, more preferably about 15 ⁇ m or more, and the preferred thickness range is about 10 to 60 ⁇ m, 10 Examples thereof include about 50 ⁇ m, about 10 to 40 ⁇ m, about 10 to 30 ⁇ m, about 10 to 25 ⁇ m, about 15 to 60 ⁇ m, about 15 to 50 ⁇ m, about 15 to 40 ⁇ m, about 15 to 30 ⁇ m, and about 15 to 25 ⁇ m.
  • the barrier layer 3 is a metal foil, it is preferable that a corrosion-resistant film is provided at least on the surface opposite to the base material layer in order to prevent dissolution and corrosion.
  • the barrier layer 3 may be provided with a corrosion-resistant film on both sides.
  • the corrosion-resistant film is, for example, a hot-water transformation treatment such as boehmite treatment, a chemical conversion treatment, anodizing treatment, a plating treatment such as nickel or chromium, and a corrosion prevention treatment for applying a coating agent on the surface of the barrier layer.
  • This is a thin film that makes the barrier layer corrosive.
  • the treatment for forming the corrosion-resistant film one type may be performed, or two or more types may be combined.
  • the hydrothermal modification treatment and the anodizing treatment are treatments in which the surface of the metal foil is dissolved by a treatment agent to form a metal compound having excellent corrosion resistance. Note that these processes may be included in the definition of chemical conversion process.
  • the barrier layer 3 has a corrosion-resistant film, the barrier layer 3 includes the corrosion-resistant film.
  • the corrosion-resistant film is formed by preventing delamination between the barrier layer (for example, aluminum alloy foil) and the base material layer during molding of the exterior material for a power storage device, and by hydrogen fluoride generated by the reaction between the electrolyte and water. , Melting and corrosion of the barrier layer surface, especially when the barrier layer is an aluminum alloy foil, it prevents the aluminum oxide existing on the barrier layer surface from melting and corroding, and the adhesiveness (wetness) of the barrier layer surface. The effect of preventing delamination between the base material layer and the barrier layer during heat sealing and preventing delamination between the base material layer and the barrier layer during molding is shown.
  • the barrier layer for example, aluminum alloy foil
  • Various corrosion-resistant films formed by chemical conversion treatment are known, and mainly, at least one of phosphate, chromate, fluoride, triazinethiol compound, and rare earth oxide. Examples include a corrosion-resistant film containing.
  • Examples of the chemical conversion treatment using a phosphate or a chromate include a chromate chromate treatment, a phosphoric chromate treatment, a phosphoric acid-chromate treatment, a chromate treatment, and the like, and chromium used in these treatments.
  • Examples of the compound include chromium nitrate, chromium fluoride, chromium sulfate, chromium acetate, chromium oxalate, chromium dichromate, acetylacetate chromate, chromium chloride, and chromium potassium sulfate.
  • examples of the phosphorus compound used in 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, and coating type chromate treatment, and coating type chromate treatment is preferable.
  • At least the inner layer side surface of the barrier layer (for example, aluminum alloy foil) is first known as an alkali dipping method, an electrolytic cleaning method, an acid cleaning method, an electrolytic acid cleaning method, an acid activation method and the like.
  • Degreasing treatment is performed by the treatment method, and then, a metal phosphate such as Cr (chromium) phosphate, Ti (titanium) phosphate, Zr (zyroxide) salt, Zn (zinc) phosphate, etc. is applied to the degreased surface.
  • a treatment liquid for example, various solvents such as water, alcohol-based solvent, hydrocarbon-based solvent, ketone-based solvent, ester-based solvent, and ether-based solvent can be used, and water is preferable.
  • examples of the resin component used at this time include polymers such as phenolic resin and acrylic resin, and an amination phenol polymer having a repeating unit represented by the following general formulas (1) to (4) can be used. Examples thereof include the chromate treatment used. In the aminated phenol polymer, the repeating units represented by the following general formulas (1) to (4) may be contained alone or in any combination of two or more. May be good.
  • the acrylic resin shall be polyacrylic acid, acrylic acid methacrylate copolymer, acrylic acid maleic acid copolymer, acrylic acid styrene copolymer, or derivatives of these sodium salts, ammonium salts, amine salts, etc. Is preferable.
  • polyacrylic acid means a polymer of acrylic acid.
  • the acrylic resin is preferably a copolymer of acrylic acid and a dicarboxylic acid or a dicarboxylic acid anhydride, and an ammonium salt, a sodium salt, or a copolymer of an acrylic acid and a dicarboxylic acid or a dicarboxylic acid anhydride.
  • it is 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, a hydroxy group, an alkyl group, a hydroxyalkyl group, an allyl group or a benzyl group.
  • R 1 and R 2 represent a hydroxy group, an alkyl group, or a hydroxyalkyl group, respectively, which are the same or different.
  • 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 and an isobutyl group.
  • Examples thereof include straight-chain or branched alkyl groups having 1 to 4 carbon atoms such as tert-butyl groups.
  • Examples of the 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 and 3-. Linear or branched chain with 1 to 4 carbon atoms in which one hydroxy group such as hydroxypropyl group, 1-hydroxybutyl group, 2-hydroxybutyl group, 3-hydroxybutyl group, 4-hydroxybutyl group is substituted.
  • Alkyl groups can be mentioned.
  • the alkyl group and the hydroxyalkyl group represented by X, R 1 and R 2 may be the same or different, respectively.
  • X is preferably a hydrogen atom, a hydroxy group or a hydroxyalkyl group.
  • the number average molecular weight of the aminated phenol polymer having the repeating unit represented by the general formulas (1) to (4) is, for example, preferably about 5 to 1,000,000, and preferably about 1,000 to 20,000. More preferred.
  • the amination phenol polymer for example, polycondenses a phenol compound or a naphthol compound with formaldehyde to produce a polymer composed of repeating units represented by the above general formula (1) or general formula (3), and then formsaldehyde. It is produced by introducing a functional group (-CH 2 NR 1 R 2 ) into the polymer obtained above using amine (R 1 R 2 NH).
  • the aminated phenol polymer is used alone or in combination of two or more.
  • the corrosion resistant film it is formed by a coating type corrosion prevention treatment in which a coating agent containing at least one selected from the group consisting of a rare earth element oxide sol, an anionic polymer, and a cationic polymer is applied.
  • the thin film to be used is mentioned.
  • the coating agent may further contain phosphoric acid or phosphate, a cross-linking agent for cross-linking the polymer.
  • fine particles of rare earth element oxide for example, particles having an average particle size of 100 nm or less
  • the rare earth element oxide examples include cerium oxide, yttrium oxide, neodymium oxide, lanthanum oxide and the like, and cerium oxide is preferable from the viewpoint of further improving adhesion.
  • the rare earth element oxide contained in the corrosion-resistant film may be used alone or in combination of two or more.
  • various solvents such as water, alcohol solvent, hydrocarbon solvent, ketone solvent, ester solvent, ether solvent and the like can be used, and water is preferable.
  • the cationic polymer examples include polyethyleneimine, an ionic polymer complex composed of polyethyleneimine and a polymer having a carboxylic acid, a primary amine graft acrylic resin obtained by graft-polymerizing a primary amine on an acrylic main skeleton, polyallylamine or a derivative thereof. , Amination phenol and the like are preferable.
  • the anionic polymer is preferably a 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 at least one selected from the group consisting of a compound having a functional group of any 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 condensed phosphoric acid or condensed phosphate.
  • a film in which fine particles of metal oxides such as aluminum oxide, titanium oxide, cerium oxide, and tin oxide and barium sulfate are dispersed in phosphoric acid is applied to the surface of the barrier layer, and 150 Examples thereof include those formed by performing a baking treatment at a temperature of ° C. or higher.
  • the corrosion-resistant film may have a laminated structure in which at least one of a cationic polymer and an anionic polymer is further laminated, if necessary.
  • a cationic polymer and an anionic polymer include those described above.
  • composition of the corrosion-resistant film can be analyzed by using, for example, a time-of-flight secondary ion mass spectrometry method.
  • 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, but for example, in the case of performing a coating type chromate treatment, a chromic acid compound per 1 m 2 of the surface of the barrier layer 3 Is, for example, about 0.5 to 50 mg, preferably about 1.0 to 40 mg in terms of chromium, and the phosphorus compound is, for example, about 0.5 to 50 mg, preferably about 1.0 to 40 mg in terms of phosphorus, and an amination phenol polymer. Is preferably contained in a proportion of, for example, about 1.0 to 200 mg, preferably about 5.0 to 150 mg.
  • the thickness of the corrosion-resistant film is not particularly limited, but is preferably about 1 nm to 20 ⁇ m, more preferably 1 nm to 100 nm, from the viewpoint of the cohesive force of the film and the adhesion to the barrier layer and the thermosetting resin layer. The degree, 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 a combination of observation with a transmission electron microscope and energy dispersion type X-ray spectroscopy or electron beam energy loss spectroscopy.
  • the time-of-flight secondary ion mass spectrometry analysis of the composition of the corrosion resistant coating using, for example, secondary ion consisting Ce and P and O (e.g., Ce 2 PO 4 +, CePO 4 - at least 1, such as species) or, for example, secondary ion of Cr and P and O (e.g., CrPO 2 +, CrPO 4 - peak derived from at least one), such as is detected.
  • secondary ion consisting Ce and P and O e.g., Ce 2 PO 4 +, CePO 4 - at least 1, such as species
  • secondary ion of Cr and P and O e.g., CrPO 2 +, CrPO 4 - peak derived from at least one
  • a solution containing a compound used for forming a corrosion-resistant film is applied to the surface of the barrier layer by a bar coating method, a roll coating method, a gravure coating method, a dipping method, or the like, and then the temperature of the barrier layer is applied. It is carried out by heating so that the temperature is about 70 to 200 ° C.
  • the barrier layer may be 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 in advance. By performing the degreasing treatment in this way, it becomes possible to more efficiently perform the chemical conversion treatment on the surface of the barrier layer.
  • an acid degreasing agent in which a fluorine-containing compound is dissolved in an inorganic acid for the degreasing treatment it is possible to form not only the degreasing effect of the metal foil but also the fluoride of the metal which is immobile. In this case, only the degreasing treatment may be performed.
  • thermosetting resin layer 4 In the exterior material for a power storage device of the present disclosure, the thermosetting resin layer 4 corresponds to the innermost layer, and has a function of heat-sealing the heat-sealing resin layers with each other when assembling the power storage device to seal the power storage device element. It is a layer (sealant layer) that exerts.
  • the resin constituting the heat-fusing resin layer 4 is not particularly limited as long as it can be heat-fused, but a resin containing a polyolefin skeleton such as polyolefin or acid-modified polyolefin is preferable.
  • a resin containing a polyolefin skeleton such as polyolefin or acid-modified polyolefin is preferable.
  • the fact that the resin constituting the heat-sealing resin layer 4 contains a polyolefin skeleton can be analyzed by, for example, infrared spectroscopy, gas chromatography-mass spectrometry, or the like. Further, when the resin constituting the thermosetting resin layer 4 is analyzed by infrared spectroscopy, it is preferable that a peak derived from maleic anhydride is detected.
  • thermosetting 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 become small and may not be detected. In that case, it can be analyzed by nuclear magnetic resonance spectroscopy.
  • polystyrene resin examples include polyethylenes such as low-density polyethylene, medium-density polyethylene, high-density polyethylene, and linear low-density polyethylene; ethylene- ⁇ -olefin copolymers; homopolypropylene and block copolymers of polypropylene (for example, with propylene).
  • Polypropylene such as (block copolymer of ethylene), random copolymer of polypropylene (for example, random copolymer of propylene and ethylene); propylene- ⁇ -olefin copolymer; terpolymer of ethylene-butene-propylene and the like.
  • polypropylene is preferable.
  • the polyolefin resin may be a block copolymer or a random copolymer.
  • One type of these polyolefin resins may be used alone, or two or more types may be used in combination.
  • the polyolefin may be a cyclic polyolefin.
  • the cyclic polyolefin is a copolymer of an olefin and a cyclic monomer, and examples of the olefin which is a constituent monomer of the cyclic polyolefin include ethylene, propylene, 4-methyl-1-pentene, styrene, butadiene, and isoprene. Be done.
  • cyclic monomer which is a constituent monomer of the cyclic polyolefin examples include cyclic alkenes such as norbornene; cyclic diene such as cyclopentadiene, dicyclopentadiene, cyclohexadiene, and norbornadiene. Among these, cyclic alkene is preferable, and norbornene is more preferable.
  • the 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-mentioned polyolefin, a copolymer obtained by copolymerizing the above-mentioned polyolefin with a polar molecule such as acrylic acid or methacrylic acid, or a polymer such as a crosslinked polyolefin can also be used.
  • the acid component used for acid modification include carboxylic acids such as maleic acid, acrylic acid, itaconic acid, crotonic acid, maleic anhydride, and itaconic anhydride, or anhydrides thereof.
  • the acid-modified polyolefin may be an acid-modified cyclic polyolefin.
  • the 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 with the cyclic polyolefin. is there.
  • the acid component used for the acid modification is the same as the acid component used for the modification of the polyolefin.
  • Preferred 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.
  • thermosetting resin layer 4 may be formed of one type of resin alone, or may be formed of a blended polymer in which two or more types of resins are combined. Further, the thermosetting resin layer 4 may be formed of only one layer, but may be formed of two or more layers with the same or different resins.
  • thermosetting resin layer 4 may contain a lubricant or the like, if necessary.
  • a lubricant is not particularly limited, and a known lubricant can be used.
  • the lubricant may be used alone or in combination of two or more.
  • the lubricant is not particularly limited, but an amide-based lubricant is preferable. Specific examples of the lubricant include those exemplified in the base material layer 1. 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 about 10 to 50 mg / m 2 from the viewpoint of improving the moldability of the exterior material for the power storage device. , More preferably about 15 to 40 mg / m 2 .
  • the lubricant existing on the surface of the thermosetting resin layer 4 may be one in which the lubricant contained in the resin constituting the thermosetting resin layer 4 is exuded, or the lubricant contained in the thermosetting resin layer 4 may be exuded.
  • the surface may be coated with a lubricant.
  • the thickness of the thermosetting resin layer 4 is not particularly limited as long as the thermosetting resin layers have a function of heat-sealing to seal the power storage device element, but is preferably about 100 ⁇ m or less, preferably. It is about 85 ⁇ m or less, more preferably about 15 to 85 ⁇ m.
  • the thickness of the thermosetting resin layer 4 is preferably about 85 ⁇ m or less, more preferably about 15 to 45 ⁇ m, for example.
  • the thickness of the thermosetting resin layer 4 is preferably about 20 ⁇ m or more, more preferably 35 to 85 ⁇ m. The degree can be mentioned.
  • the adhesive layer 5 is provided between the barrier layer 3 (or the corrosion-resistant film) and the thermosetting resin layer 4 as necessary in order to firmly bond them. It is a layer to be corroded.
  • the adhesive layer 5 is formed of a resin capable of adhering the barrier layer 3 and the thermosetting resin layer 4 to each other.
  • the resin used for forming the adhesive layer 5 for example, the same resin as the adhesive exemplified in the adhesive layer 2 can be used.
  • the resin used for forming the adhesive layer 5 preferably contains a polyolefin skeleton, and examples thereof include the polyolefins exemplified in the above-mentioned heat-sealing resin layer 4 and acid-modified polyolefins.
  • the resin constituting the adhesive layer 5 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. Further, when the resin constituting the adhesive layer 5 is analyzed by infrared spectroscopy, it is preferable that a peak derived from maleic anhydride is detected. For example, when measuring the infrared spectroscopy at a maleic anhydride-modified polyolefin, a peak derived from maleic acid is detected in the vicinity of the wave number of 1760 cm -1 and near the wave number 1780 cm -1. However, if the degree of acid denaturation is low, the peak may become small and may not be detected. In that case, it can be analyzed by nuclear magnetic resonance spectroscopy.
  • the adhesive layer 5 preferably contains an acid-modified polyolefin.
  • an acid-modified polyolefin a polyolefin modified with a carboxylic acid or an anhydride thereof, a polypropylene modified with a carboxylic acid or an anhydride thereof, a maleic anhydride-modified polyolefin, and a maleic anhydride-modified polypropylene are particularly preferable.
  • the adhesive layer 5 is a resin composition containing an acid-modified polyolefin and a curing agent. It is more preferable that it is a cured product of.
  • the acid-modified polyolefin the above-mentioned ones are preferably exemplified.
  • the adhesive layer 5 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. It is particularly preferable that the resin composition is a cured product 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. Further, the adhesive layer 5 preferably contains at least one selected from the group consisting of polyurethane, polyester, and epoxy resin, and more preferably contains polyurethane and epoxy resin. As the polyester, for example, an amide ester resin is preferable.
  • the amide ester resin is generally produced by the reaction of a carboxyl group and an oxazoline group.
  • the adhesive layer 5 is more preferably a cured product of a resin composition containing at least one of these resins and the acid-modified polyolefin.
  • 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 5, the presence of the unreacted substance is determined 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 curing agent having a heterocycle include a curing agent having an oxazoline group and a curing agent having an epoxy group.
  • the curing agent having a C—C bond examples include a curing agent having an oxazoline group, a curing agent having an epoxy group, and polyurethane.
  • the fact that the adhesive layer 5 is a cured product of a resin composition containing these curing agents is, for example, gas chromatograph mass spectrometry (GCMS), infrared spectroscopy (IR), time-of-flight secondary ion mass spectrometry (TOF). -SIMS), X-ray photoelectron spectroscopy (XPS) and other methods can be used for confirmation.
  • GCMS gas chromatograph mass spectrometry
  • IR infrared spectroscopy
  • TOF time-of-flight secondary ion mass spectrometry
  • -SIMS X-ray photoelectron spectroscopy
  • XPS X-ray photoelectron spectroscopy
  • the compound having an isocyanate group is not particularly limited, but from the viewpoint of effectively enhancing the adhesion between the barrier layer 3 and the adhesive layer 5, a polyfunctional isocyanate compound is preferable.
  • the polyfunctional isocyanate compound 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 pentandiisocyanate (PDI), isophorone diisocyanate (IPDI), hexamethylene diisocyanate (HDI), tolylene diisocyanate (TDI), and diphenylmethane diisocyanate (MDI), which are polymerized or nurate. Examples thereof include chemical compounds, mixtures thereof, and copolymers with other polymers.
  • an adduct body, a burette body, an isocyanate body and the like can be mentioned.
  • the content of the compound having an isocyanate group in the adhesive layer 5 is preferably in the range of 0.1 to 50% by mass, and 0.5 to 40% by mass in the resin composition constituting the adhesive layer 5. More preferably in the range. As a result, the adhesion between the barrier layer 3 and the adhesive layer 5 can be effectively enhanced.
  • the compound having an oxazoline group is not particularly limited as long as it is a compound having an oxazoline skeleton.
  • Specific examples of the compound having an oxazoline group include those having a polystyrene main chain and those having an acrylic main chain.
  • examples of commercially available products include the Epocross series manufactured by Nippon Shokubai Co., Ltd.
  • the proportion of the compound having an oxazoline group in the adhesive layer 5 is preferably in the range of 0.1 to 50% by mass, preferably in the range of 0.5 to 40% by mass in the resin composition constituting the adhesive layer 5. It is more preferable to be in. As a result, the adhesion between the barrier layer 3 and the adhesive layer 5 can be effectively enhanced.
  • Examples of the compound having an epoxy group include an epoxy resin.
  • the epoxy resin is not particularly limited as long as it is a resin capable of forming a crosslinked structure by an epoxy group existing in the molecule, and a known epoxy resin can be used.
  • the weight average molecular weight of the epoxy resin is preferably about 50 to 2000, more preferably about 100 to 1000, and even more preferably about 200 to 800.
  • the weight average molecular weight of the epoxy resin is a value measured by gel permeation chromatography (GPC) measured under the condition that polystyrene is used as a standard sample.
  • epoxy resin examples include glycidyl ether derivative of trimethylolpropane, bisphenol A diglycidyl ether, modified bisphenol A diglycidyl ether, novolac glycidyl ether, glycerin polyglycidyl ether, polyglycerin polyglycidyl ether and the like.
  • One type of epoxy resin may be used alone, or two or more types may be used in combination.
  • the proportion of the epoxy resin in the adhesive layer 5 is preferably in the range of 0.1 to 50% by mass, and preferably in the range of 0.5 to 40% by mass in the resin composition constituting the adhesive layer 5. Is more preferable. As a result, the adhesion between the barrier layer 3 and the adhesive layer 5 can be effectively enhanced.
  • the polyurethane is not particularly limited, and known polyurethane can be used.
  • the adhesive layer 5 may be, for example, a cured product of a two-component curable polyurethane.
  • the proportion of polyurethane in the adhesive layer 5 is preferably in the range of 0.1 to 50% by mass, and preferably in the range of 0.5 to 40% by mass in the resin composition constituting the adhesive layer 5. More preferred. As a result, the adhesion between the barrier layer 3 and the adhesive layer 5 can be effectively enhanced in an atmosphere in which a component that induces corrosion of the barrier layer such as an electrolytic solution is present.
  • the adhesive layer 5 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 upper limit of the thickness of the adhesive layer 5 is preferably about 50 ⁇ m or less, about 40 ⁇ m or less, about 30 ⁇ m or less, about 20 ⁇ m or less, about 5 ⁇ m or less, and the lower limit is preferably about 0.1 ⁇ m or more.
  • the thickness range 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, 0. 1.
  • the thickness is preferably about 1 to 10 ⁇ m, more preferably about 1 to 5 ⁇ m.
  • the resin exemplified in the thermosetting resin layer 4 it is preferably about 2 to 50 ⁇ m, more preferably about 10 to 40 ⁇ m.
  • the adhesive layer 5 is a cured product of the adhesive exemplified in the adhesive layer 2 or a resin composition containing an acid-modified polyolefin and a curing agent, for example, the resin composition is applied and cured by heating or the like. As a result, the adhesive layer 5 can be formed. Further, when the resin exemplified in the thermosetting resin layer 4 is used, it can be formed by, for example, extrusion molding of the thermosetting resin layer 4 and the adhesive layer 5.
  • the exterior material for a power storage device of the present disclosure is above the base material layer 1 (base material layer 1), if necessary, for the purpose of improving at least one of designability, electrolyte resistance, scratch resistance, moldability, and the like.
  • the surface coating layer 6 may be provided on the side opposite to the barrier layer 3 of the above.
  • the surface coating layer 6 is a layer located on the outermost layer side of the exterior material for the power storage device when the power storage device is assembled using the exterior material for the power storage device.
  • the surface coating layer 6 can be formed of, for example, a resin such as polyvinylidene chloride, polyester, polyurethane, acrylic resin, or epoxy resin.
  • the resin forming the surface coating layer 6 is a curable resin
  • the resin may be either a one-component curable type or a two-component curable type, but is preferably a two-component curable type.
  • the two-component curable resin include two-component curable polyurethane, two-component curable polyester, and two-component curable epoxy resin. Of these, two-component curable polyurethane is preferable.
  • Examples of the two-component curable polyurethane include polyurethane containing a main agent containing a polyol compound and a curing agent containing an isocyanate compound.
  • a polyol compound it is preferable to use a polyester polyol having a hydroxyl group in the side chain in addition to the hydroxyl group at the end of the repeating unit. Since the surface coating layer 6 is made of polyurethane, excellent electrolyte resistance is imparted to the exterior material for the power storage device.
  • the surface coating layer 6 is provided with the above-mentioned lubricant or antistatic agent, if necessary, depending on the surface coating layer 6 and the functionality to be provided on the surface thereof. It may contain additives such as a blocking agent, a matting agent, a flame retardant, an antioxidant, a tackifier, and an antistatic agent.
  • additives such as a blocking agent, a matting agent, a flame retardant, an antioxidant, a tackifier, and an antistatic agent.
  • the additive include fine particles having an average particle diameter of about 0.5 nm to 5 ⁇ m.
  • the average particle size of the additive shall be the median diameter measured by a laser diffraction / scattering type particle size distribution measuring device.
  • the additive may be either an inorganic substance or an organic substance.
  • the shape of the additive is also not particularly limited, and examples thereof include spherical, fibrous, plate-like, amorphous, and scaly shapes.
  • additives include talc, silica, graphite, kaolin, montmorillonite, mica, hydrotalcite, silica gel, zeolite, aluminum hydroxide, magnesium hydroxide, zinc oxide, magnesium oxide, aluminum oxide, neodium oxide, and 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, refractory nylon, acrylate resin examples thereof include crosslinked acrylic, crosslinked styrene, crosslinked polyethylene, benzoguanamine, gold, aluminum, copper and nickel.
  • the additive may be used alone or in combination of two or more.
  • silica, barium sulfate, and titanium oxide are preferable from the viewpoint of dispersion stability and cost.
  • the additive may be subjected to various surface treatments such as an insulation treatment and a highly dispersible treatment on the surface.
  • the method for forming the surface coating layer 6 is not particularly limited, and examples thereof include a method of applying a resin for forming the surface coating layer 6.
  • a resin mixed with the additive may be applied.
  • the thickness of the surface coating layer 6 is not particularly limited as long as it exhibits the above-mentioned functions as the surface coating layer 6, and examples thereof include about 0.5 to 10 ⁇ m, preferably about 1 to 5 ⁇ m.
  • the method for manufacturing the exterior material for power storage device is not particularly limited as long as a laminated body in which each layer of the exterior material for power storage device of the present disclosure is laminated can be obtained, and the method is not particularly limited. At least, a method including a step of laminating the base material layer 1, the barrier layer 3, and the thermosetting resin layer 4 in this order can be mentioned.
  • the method for producing an exterior material for a power storage device of the present disclosure includes a step of obtaining a laminate in which at least a base material layer, a barrier layer, and a thermosetting resin layer are laminated in order from the outside.
  • the base material layer contains a polyamide film, and the crystallization index of the polyamide film measured from the outside of the base material layer by the ATR method of Fourier transform infrared spectroscopy is 1.50. That is all.
  • a laminate in which the base material layer 1, the adhesive layer 2, and the barrier layer 3 are laminated in this order (hereinafter, may be referred to as “laminate A”) is formed.
  • the layered body A is formed by applying an adhesive used for forming the adhesive layer 2 on the base material layer 1 or, if necessary, on the barrier layer 3 whose surface has been chemically converted, by a gravure coating method. It can be carried out by a dry laminating method in which the barrier layer 3 or the base material layer 1 is laminated and the adhesive layer 2 is cured after being coated and dried by a coating method such as a roll coating method.
  • thermosetting resin layer 4 is laminated on the barrier layer 3 of the laminated body A.
  • the thermosetting resin layer 4 is laminated on the barrier layer 3 of the laminated body A by a method such as a thermal laminating method or an extrusion laminating method. do it.
  • the adhesive layer 5 is provided between the barrier layer 3 and the heat-sealing resin layer 4, for example, (1) the adhesive layer 5 and the heat-sealing resin layer are placed on the barrier layer 3 of the laminated body A.
  • a method of laminating 4 by extruding (co-extrusion laminating method, tandem laminating method), (2) Separately, a laminated body in which the adhesive layer 5 and the heat-sealing resin layer 4 are laminated is formed, and this is laminated.
  • a laminated body in which the adhesive layer 5 is laminated on the barrier layer 3 of the laminated body A is formed by a method of laminating on the barrier layer 3 of the above, and this is formed by a heat-sealing resin layer 4 and a thermal laminating method.
  • Method of Laminating (3) While pouring the melted adhesive layer 5 between the barrier layer 3 of the laminated body A and the heat-sealing resin layer 4 formed into a sheet in advance, the adhesive layer 5 is passed through.
  • a method of laminating the laminate A and the heat-sealing resin layer 4 (sandwich lamination method), (4) a solution coating of an adhesive for forming the adhesive layer 5 on the barrier layer 3 of the laminate A is performed.
  • Examples thereof include a method of laminating by a method of drying, a method of baking, and the like, and a method of laminating a heat-sealing resin layer 4 having a sheet-like film formed in advance on the adhesive layer 5.
  • the surface coating layer 6 is laminated on the surface of the base material layer 1 opposite to the barrier layer 3.
  • the surface coating layer 6 can be formed, for example, by applying the above resin that forms the surface coating layer 6 to the surface of the base material layer 1.
  • the order of the step of laminating the barrier layer 3 on the surface of the base material layer 1 and the step of laminating the surface coating layer 6 on the surface of the base material layer 1 is not particularly limited.
  • the barrier layer 3 may be formed on the surface of the base material layer 1 opposite to the surface coating layer 6.
  • each layer constituting the laminated body may be subjected to surface activation treatment such as corona treatment, blast treatment, oxidation treatment, ozone treatment, etc., if necessary, to improve processing suitability. ..
  • surface activation treatment such as corona treatment, blast treatment, oxidation treatment, ozone treatment, etc.
  • a corona treatment to the surface of the base material layer 1 opposite to the barrier layer 3, the printability of ink on the surface of the base material layer 1 can be improved.
  • exterior materials for power storage devices of the present disclosure are used for packaging for sealing and accommodating power storage device elements such as positive electrodes, negative electrodes, and electrolytes. That is, a power storage device element including at least a positive electrode, a negative electrode, and an electrolyte can be housed in a package formed of the exterior material for a power storage device of the present disclosure to form a power storage device.
  • a power storage device element having at least a positive electrode, a negative electrode, and an electrolyte is provided in a state in which metal terminals connected to each of the positive electrode and the negative electrode are projected outward in the exterior material for the power storage device of the present disclosure.
  • the peripheral edge of the power storage device element is covered so that a flange portion (a region where the heat-sealing resin layers come into contact with each other) can be formed, and the heat-sealing resin layers of the flange portion are heat-sealed and sealed.
  • thermosetting resin portion of the exterior material for the power storage device of the present disclosure is inside (the surface in contact with the power storage device element). ) To form a package.
  • the exterior material for a power storage device of the present disclosure can be suitably used for a power storage device such as a battery (including a capacitor, a capacitor, etc.). Further, the exterior material for the power storage device of the present disclosure may be used for either a primary battery or a secondary battery, but is preferably a secondary battery.
  • the type of the secondary battery to which the exterior material for the power storage device of the present disclosure is applied is not particularly limited, and for example, a lithium ion battery, a lithium ion polymer battery, an all-solid-state battery, a lead storage battery, a nickel / hydrogen storage battery, and a nickel / hydrogen storage battery.
  • lithium ion batteries and lithium ion polymer batteries can be mentioned as suitable application targets of the exterior materials for power storage devices of the present disclosure.
  • the power storage device is generally fixed to the housing of various products via double-sided tape or an adhesive. That is, the exterior material 10 for a power storage device of the present disclosure is fixed to the housing of various products via double-sided tape or an adhesive.
  • the material of the housing varies depending on the type of product, and includes, for example, metals such as stainless steel, aluminum alloys and nickel alloys, plastics such as polyolefins, polyamides, polyesters, polyimides and polystyrenes, and glass.
  • the adhesive strength between the power storage device and the housing is adjusted to such an extent that the power storage device can be peeled off from the housing, for example.
  • a double-sided tape having a peel strength of about 5 to 15 N / 7.5 mm with respect to the stainless steel plate measured by (measurement of the peel strength of the double-sided tape) described later is used. It is preferable that it is fixed.
  • the exterior material 10 for a power storage device can be suitably used for a power storage device fixed to the housing with a double-sided tape having a peel strength with respect to the housing of about 5 to 15 N / 7.5 mm.
  • polyamide film of the present disclosure is a polyamide film for use as a base material layer of an exterior material for a power storage device composed of a laminate including at least a base material layer, a barrier layer, and a thermosetting resin layer. Therefore, the crystallization index measured by the ATR method of Fourier transform infrared spectroscopy is 1.50 or more.
  • the details of the exterior material 10 for the power storage device are as described above.
  • the crystallization index is preferably set to 1.50 or more for the polyamide film of the base material layer 1 of the exterior material 10 for a power storage device. This makes it possible to effectively prevent damage to the exterior material for the power storage device during the above-mentioned peeling. That is, the polyamide film of the present disclosure whose crystallization index has been adjusted to 1.50 or more in advance is used as the base material layer 1 and laminated with each layer such as the barrier layer 3 and the thermosetting resin layer 4. It is preferable to manufacture the exterior material 10 for the power storage device of the present disclosure.
  • the crystallization index of the polyamide film laminated on the power storage device exterior material 10 and contained in the base material layer 1 can be increased as compared with the polyamide film before being applied to the power storage device exterior material 10.
  • the crystallization index can be increased by applying heat to the polyamide film in the manufacturing process of the exterior material 10 for a power storage device.
  • the method for measuring the crystallization index of the polyamide film disclosed in the present disclosure is as follows.
  • a sample is prepared by cutting a polyamide film into a square of 100 mm ⁇ 100 mm.
  • the surface of the obtained sample is subjected to infrared absorption spectrum measurement in an environment of a temperature of 25 ° C. and a relative humidity of 50% using the ATR measurement mode of FT-IR.
  • the apparatus for example, Thermo Fisher Scientific Co., Ltd .: Nicolet iS10 can be used. From the obtained absorption spectrum, the peak intensity P around 1200 cm -1 derived from the absorption of ⁇ crystals of nylon and the peak intensity Q around 1370 cm -1 derived from the absorption unrelated to the crystals were measured, and the peak intensity Q was measured.
  • the intensity ratio X P / Q of the peak intensity P with respect to the crystallization index is calculated. (Measurement condition) Method: Macro ATR method Wavenumber resolution: 8 cm -1 Number of integrations: 32 times Detector: DTGS detector ATR prism: Ge Incident angle: 45 ° Baseline: determined as a straight line approximation between 1400 cm -1 wave number 1100 cm -1. Absorption peak intensity Y 1200: value absorption peak intensity minus the baseline values from the maximum value of the peak intensity in the range of 1205cm -1 wave number 1195cm -1 Y 1370: peak intensity in the range of 1375 cm -1 wave number 1365cm -1 Maximum value minus baseline value
  • the crystallization index may be 1.50 or more, but from the viewpoint of more effectively suppressing damage to the exterior material for the power storage device during the above-mentioned peeling. , More preferably 1.55 or more, still more preferably 1.60 or more, and particularly preferably 1.65 or more.
  • the upper limit of the crystallization index is not particularly limited, and examples thereof include 2.50 or less and 1.80 or less.
  • Preferred ranges of the crystallization index include, for example, 1.50 to 2.50, 1.60 to 2.50, 1.65 to 2.50, 1.50 to 1.80, and 1.60 to 1. 80, 1.65 to 1.80 and the like can be mentioned.
  • the polyamide forming the polyamide film are as described in the item of the base material layer 1 of the exterior material 10 for the power storage device.
  • the polyamide film may be an unstretched film or a stretched film.
  • the stretched film include a uniaxially stretched film and a biaxially stretched film, and a biaxially stretched film is preferable.
  • the stretching method for forming the biaxially stretched film include a sequential biaxial stretching method, an inflation method, and a simultaneous biaxial stretching method.
  • Examples of the method for applying the resin include a roll coating method, a gravure coating method, and an extrusion coating method.
  • the polyamide film is particularly preferably a biaxially stretched nylon film.
  • the thickness of the polyamide film is preferably about 3 ⁇ m or more, more preferably about 10 ⁇ m or more, and more preferably about 10 ⁇ m or more, from the viewpoint of more effectively suppressing damage to the exterior material for the power storage device during the above-mentioned peeling. It is preferably about 50 ⁇ m or less, more preferably about 35 ⁇ m or less, and preferred ranges include about 3 to 50 ⁇ m, about 3 to 35 ⁇ m, about 10 to 50 ⁇ m, and about 10 to 35 ⁇ m, among which 10 to 35 ⁇ m. The degree is particularly preferable.
  • Additives such as lubricants, flame retardants, antiblocking agents, antioxidants, light stabilizers, tackifiers, and antistatic agents may be present on at least one of the surface and the inside of the polyamide film. Only one type of additive may be used, or two or more types may be mixed and used. The details of the additive are as described in the item of the base material layer 1 of the exterior material 10 for the power storage device.
  • Example 1-3 and Comparative Example 1-2 Stretched nylon (ONy) films (thickness 25 ⁇ m) were prepared as the base material layers. As will be described later, the stretched nylon films used in Examples 1-3 and Comparative Example 1-2 were prepared by changing the draw ratio and the heat-fixing temperature to adjust the crystallization index to the values shown in Table 1, respectively. is there. Erucic acid amide is applied as a lubricant to the stretched nylon film. As a barrier layer, an aluminum alloy foil (JIS H4160: 1994 A8021HO (thickness 40 ⁇ m)) was prepared. Next, an adhesive (two-component urethane adhesive) was applied to one surface of the aluminum alloy foil and dried.
  • an adhesive two-component urethane adhesive
  • the adhesive on the barrier layer and the base material layer are laminated by a dry laminating method, and then an aging treatment is performed to obtain a base material layer (thickness 25 ⁇ m) / adhesive layer (thickness after curing 3 ⁇ m) /.
  • a laminated body of a barrier layer (thickness 40 ⁇ m) was prepared.
  • Both sides of the aluminum alloy foil are subjected to chemical conversion treatment.
  • the chemical conversion treatment of the aluminum alloy foil is performed by applying a treatment liquid consisting of a phenol resin, a chromium fluoride compound, and phosphoric acid to the aluminum alloy foil by a roll coating method so that the amount of chromium applied is 10 mg / m 2 (dry mass). This was done by applying on both sides and baking.
  • Example 4 A stretched nylon (ONy) film (thickness 20 ⁇ m) was prepared as a base material layer. As will be described later, the stretched nylon film used in Example 4 has a crystallization index adjusted to the values shown in Table 1 by changing the stretch ratio and the heat fixing temperature.
  • the stretched nylon film has a coat layer (a polyester polyurethane containing a lubricant coated with a thickness of 300 nm or less) on the surface opposite to the barrier layer, and a coat layer (polyester polyurethane) on the surface on the barrier layer side. , With a thickness of 300 nm or less).
  • As a barrier layer an aluminum alloy foil (JIS H4160: 1994 A8021HO (thickness 35 ⁇ m)) was prepared.
  • an adhesive two-component urethane adhesive
  • the adhesive on the barrier layer and the base material layer are laminated by a dry laminating method, and then an aging treatment is performed to obtain a base material layer (thickness 20 ⁇ m) / adhesive layer (thickness after curing 3 ⁇ m) /.
  • a laminated body of a barrier layer was prepared. Both sides of the aluminum alloy foil are subjected to chemical conversion treatment.
  • the chemical conversion treatment of the aluminum alloy foil is performed by applying a treatment liquid consisting of a phenol resin, a chromium fluoride compound, and phosphoric acid to the aluminum alloy foil by a roll coating method so that the amount of chromium applied is 10 mg / m 2 (dry mass). This was done by applying on both sides and baking.
  • thermosetting resin layer By co-extruding, an adhesive layer / thermosetting resin layer is laminated on the barrier layer, aged, and in order from the outside, a base material layer (thickness 20 ⁇ m) / adhesive layer (3 ⁇ m). / Barrier layer (35 ⁇ m) / Adhesive layer (15 ⁇ m) / Thermosetting resin layer (15 ⁇ m) were laminated to obtain a laminated body (total thickness 88 ⁇ m).
  • Example 5 A stretched nylon (ONy) film (thickness 20 ⁇ m) was prepared as a base material layer.
  • the stretched nylon film used in Example 5 is the same as that used in Example 4.
  • the stretched nylon film has a coat layer (a polyester polyurethane containing a lubricant coated with a thickness of 300 nm or less) on the surface opposite to the barrier layer, and a coat layer (polyester polyurethane) on the surface on the barrier layer side. , With a thickness of 300 nm or less).
  • an aluminum alloy foil JIS H4160: 1994 A8021HO (thickness 30 ⁇ m)
  • an adhesive two-component urethane adhesive
  • the adhesive on the barrier layer and the base material layer are laminated by a dry laminating method, and then an aging treatment is performed to obtain a base material layer (thickness 20 ⁇ m) / adhesive layer (thickness after curing 3 ⁇ m) /.
  • a laminated body of a barrier layer (thickness 30 ⁇ m) was prepared.
  • Both sides of the aluminum alloy foil are subjected to chemical conversion treatment.
  • the chemical conversion treatment of the aluminum alloy foil is performed by applying a treatment liquid consisting of a phenol resin, a chromium fluoride compound, and phosphoric acid to the aluminum alloy foil by a roll coating method so that the amount of chromium applied is 10 mg / m 2 (dry mass). This was done by applying on both sides and baking.
  • Example 6 As the base material layer, a stretched nylon (ONy) film having a coat layer (polyester polyurethane coated with a thickness of 300 nm or less) is used on the surface on the barrier layer side in the same manner as in Example 1 from the outside. Laminated body (total thickness 114 ⁇ m) in which a base material layer (thickness 25 ⁇ m) / adhesive layer (3 ⁇ m) / barrier layer (40 ⁇ m) / adhesive layer (23 ⁇ m) / thermosetting resin layer (23 ⁇ m) are laminated in this order.
  • Example 7 A stretched nylon (ONy) film (thickness 20 ⁇ m) was prepared as a base material layer.
  • the stretched nylon film used in Example 7 is the same as that used in Example 4.
  • As a barrier layer an aluminum alloy foil (JIS H4160: 1994 A8021HO (thickness 35 ⁇ m)) was prepared.
  • the barrier layer and the base material layer are laminated by a dry laminating method using an adhesive (a two-component urethane adhesive containing carbon black), and then an aging treatment is performed to obtain a base material layer (thickness).
  • a laminated body of 20 ⁇ m) / adhesive layer (thickness after curing 3 ⁇ m) / barrier layer (35 ⁇ m thickness) was prepared.
  • Both sides of the aluminum alloy foil are subjected to chemical conversion treatment.
  • the chemical conversion treatment of the aluminum alloy foil is performed by applying a treatment liquid consisting of a phenol resin, a chromium fluoride compound, and phosphoric acid to the aluminum alloy foil by a roll coating method so that the amount of chromium applied is 10 mg / m 2 (dry mass). This was done by applying on both sides and baking.
  • a two-component urethane resin (two-component urethane resin containing silica particles and resin beads) for forming a mat layer as a surface coating layer was applied so as to have a thickness of 3 ⁇ m.
  • Surface coating layer (thickness 3 ⁇ m) / base material layer (thickness 20 ⁇ m) / adhesive layer (3 ⁇ m) / barrier layer (35 ⁇ m) / adhesive layer (15 ⁇ m) / heat in this order from the outside.
  • a laminated body (total thickness 91 ⁇ m) in which a fusible resin layer (15 ⁇ m) was laminated was obtained.
  • Example 8 A stretched nylon (ONy) film (thickness 20 ⁇ m) was prepared as a base material layer.
  • the stretched nylon film used in Example 8 is the same as that used in Example 4.
  • As a barrier layer an aluminum alloy foil (JIS H4160: 1994 A8021HO (thickness 40 ⁇ m)) was prepared. Next, an adhesive (two-component urethane adhesive) was applied to one surface of the aluminum alloy foil and dried. Next, the adhesive on the barrier layer and the base material layer are laminated by a dry laminating method, and then an aging treatment is performed to obtain a base material layer (thickness 20 ⁇ m) / adhesive layer (thickness after curing 3 ⁇ m) /.
  • a laminated body of a barrier layer (thickness 40 ⁇ m) was prepared. Both sides of the aluminum alloy foil are subjected to chemical conversion treatment.
  • the chemical conversion treatment of the aluminum alloy foil is performed by applying a treatment liquid consisting of a phenol resin, a chromium fluoride compound, and phosphoric acid to the aluminum alloy foil by a roll coating method so that the amount of chromium applied is 10 mg / m 2 (dry mass). This was done by applying on both sides and baking.
  • Example 9 A stretched nylon (ONy) film (thickness 20 ⁇ m) was prepared as a base material layer.
  • the stretched nylon film used in Example 9 is the same as that used in Example 4.
  • As a barrier layer an aluminum alloy foil (JIS H4160: 1994 A8021HO (thickness 40 ⁇ m)) was prepared.
  • the barrier layer and the base material layer are laminated by a dry laminating method using an adhesive (a two-component urethane adhesive containing carbon black), and then an aging treatment is performed to obtain a base material layer (thickness).
  • a laminated body of 20 ⁇ m) / adhesive layer (thickness after curing 3 ⁇ m) / barrier layer (40 ⁇ m thickness) was prepared.
  • Both sides of the aluminum alloy foil are subjected to chemical conversion treatment.
  • the chemical conversion treatment of the aluminum alloy foil is performed by applying a treatment liquid consisting of a phenol resin, a chromium fluoride compound, and phosphoric acid to the aluminum alloy foil by a roll coating method so that the amount of chromium applied is 10 mg / m 2 (dry mass). This was done by applying on both sides and baking.
  • a two-component urethane resin (two-component urethane resin containing silica particles and resin beads) for forming a mat layer as a surface coating layer was applied so as to have a thickness of 3 ⁇ m.
  • Surface coating layer (thickness 3 ⁇ m) / base material layer (thickness 20 ⁇ m) / adhesive layer (3 ⁇ m) / barrier layer (40 ⁇ m) / adhesive layer (14 ⁇ m) / heat, in order from the outside.
  • a laminated body (total thickness 90 ⁇ m) in which a fusible resin layer (10 ⁇ m) was laminated was obtained.
  • Example 10 A stretched nylon (ONy) film (thickness 20 ⁇ m) was prepared as a base material layer.
  • the stretched nylon film used in Example 10 is the same as that used in Example 4.
  • As a barrier layer an aluminum alloy foil (JIS H4160: 1994 A8021HO (thickness 40 ⁇ m)) was prepared. Next, an adhesive (two-component urethane adhesive) was applied to one surface of the aluminum alloy foil and dried. Next, the adhesive on the barrier layer and the base material layer are laminated by a dry laminating method, and then an aging treatment is performed to obtain a base material layer (thickness 20 ⁇ m) / adhesive layer (thickness after curing 3 ⁇ m) /.
  • a laminated body of a barrier layer (thickness 40 ⁇ m) was prepared. Both sides of the aluminum alloy foil are subjected to chemical conversion treatment.
  • the chemical conversion treatment of the aluminum alloy foil is performed by applying a treatment liquid consisting of a phenol resin, a chromium fluoride compound, and phosphoric acid to the aluminum alloy foil by a roll coating method so that the amount of chromium applied is 10 mg / m 2 (dry mass). This was done by applying on both sides and baking.
  • Example 11 A stretched nylon (ONy) film (thickness 20 ⁇ m) was prepared as a base material layer.
  • the stretched nylon film used in Example 11 is the same as that used in Example 4.
  • As a barrier layer an aluminum alloy foil (JIS H4160: 1994 A8021HO (thickness 40 ⁇ m)) was prepared.
  • the barrier layer and the base material layer are laminated by a dry laminating method using an adhesive (a two-component urethane adhesive containing carbon black), and then an aging treatment is performed to obtain a base material layer (thickness).
  • a laminated body of 20 ⁇ m) / adhesive layer (thickness after curing 3 ⁇ m) / barrier layer (40 ⁇ m thickness) was prepared.
  • Both sides of the aluminum alloy foil are subjected to chemical conversion treatment.
  • the chemical conversion treatment of the aluminum alloy foil is performed by applying a treatment liquid consisting of a phenol resin, a chromium fluoride compound, and phosphoric acid to the aluminum alloy foil by a roll coating method so that the amount of chromium applied is 10 mg / m 2 (dry mass). This was done by applying on both sides and baking.
  • a two-component urethane resin (two-component urethane resin containing silica particles and resin beads) for forming a mat layer as a surface coating layer was applied so as to have a thickness of 3 ⁇ m.
  • Surface coating layer (thickness 3 ⁇ m) / base material layer (thickness 20 ⁇ m) / adhesive layer (3 ⁇ m) / barrier layer (40 ⁇ m) / adhesive layer (15 ⁇ m) / heat, in order from the outside.
  • a laminated body (total thickness 96 ⁇ m) in which a fusible resin layer (15 ⁇ m) was laminated was obtained.
  • a sample was prepared by cutting the exterior material for a power storage device into a square of 100 mm ⁇ 100 mm.
  • the surface of the stretched nylon film located on the outside of the obtained sample was manufactured by Thermo Fisher Scientific Co., Ltd .: using the ATR measurement mode of Nicolet iS10 FT-IR under an environment of a temperature of 25 ° C. and a relative humidity of 50%. Infrared absorption spectrum measurement was performed in.
  • a sample was prepared by cutting a stretched nylon film used for the base material layer of the exterior material for a power storage device into a square of 100 mm ⁇ 100 mm.
  • the surface of the obtained sample was subjected to infrared absorption spectrum measurement in an environment of a temperature of 25 ° C. and a relative humidity of 50% using the ATR measurement mode of Thermo Fisher Scientific Co., Ltd .: Nicolet iS10 FT-IR. From the obtained absorption spectrum, the peak intensity P around 1200 cm -1 derived from the absorption of ⁇ crystal of nylon and the peak intensity Q around 1370 cm -1 derived from the absorption unrelated to the crystal were measured, and the peak intensity Q was measured.
  • the intensity ratio X P / Q of the peak intensity P with respect to the above was calculated as the crystallization index.
  • the results are shown in Table 1. (Measurement condition) Method: Macro ATR method Wavenumber resolution: 8 cm -1 Number of integrations: 32 times Detector: DTGS detector ATR prism: Ge Incident angle: 45 ° Baseline: determined as a straight line approximation between 1400 cm -1 wave number 1100 cm -1.
  • Absorption peak intensity Y 1200 value absorption peak intensity minus the baseline values from the maximum value of the peak intensity in the range of 1205cm -1 wave number 1195cm -1
  • Y 1370 peak intensity in the range of 1375 cm -1 wave number 1365cm -1 Maximum value minus baseline value
  • the peeling test of the power storage device was performed according to the following procedure. This will be described with reference to FIGS. 5 to 8.
  • a procedure for preparing a sample used for a peeling test of a power storage device will be described with reference to FIG.
  • the exterior material for a power storage device is cut into a rectangular shape having a length (MD) of 200 mm and a width (TD) of 90 mm.
  • TD width
  • a molding die female mold
  • a recess M (a region surrounded by a broken line in FIG. 5a) was formed by cold molding at a distant position to a depth of 5.0 mm from the thermosetting resin layer side.
  • an acrylic plate having a length of 55 mm, a width of 32 mm, and a thickness of 5 mm was inserted into the recess M (FIGS. 5b and c).
  • the exterior material for the power storage device after molding was folded in half in the TD direction at the position of the crease P (the position along the short side of the recess M) so that the recess M was on the inside (FIG. 5d).
  • thermosetting resin layers overlap each other is heat-sealed (190 ° C., 3 seconds, surface pressure 1 MPa) at three locations along the MD and TD along the peripheral edge of the recess M.
  • the recess M was sealed (FIG. 5e).
  • the colored region S is a heat-sealed portion.
  • the sample 12 used for the peeling test of the power storage device was prepared by trimming to a size of 60 mm in length (MD) and 37 mm in width (TD) along the recess M.
  • FIG. 6 shows a side view (FIG. 6a) and a plan view (FIG. 6b) of the sample 12.
  • the sample 12 to which the double-sided tape was attached was attached to a stainless steel plate and cured in an environment of 60 ° C. for 24 hours.
  • the stainless steel plate is likened to a housing for fixing the power storage device with double-sided tape.
  • the sample 12 was carefully peeled off from the stainless steel plate using a metal spatula, and the presence or absence of holes in the peeled sample 12 was visually confirmed, and each sample 3 was visually confirmed.
  • the peeling test of the power storage device was evaluated according to the following criteria. As shown in FIG. 8, the power storage device was peeled off by applying a force from the lateral direction (TD) of the sample 12. The results are shown in Table 1.
  • B There was a hole in one or two samples.
  • C All three samples had holes.
  • the exterior materials for power storage devices of Examples 1 to 11 are composed of a laminate having at least a base material layer, a barrier layer, and a thermosetting resin layer in this order from the outside, and the base material layer is a polyamide.
  • the film is included, and the crystallization index of the polyamide film measured from the outside of the base material layer by the ATR method of Fourier transform infrared spectroscopy is 1.50 or more.
  • the polyamide film used for the base material layer of the exterior material for the power storage device of Examples 1 to 11 has a crystallization index of 1.50 or more measured by the ATR method of Fourier transform infrared spectroscopy. It can be seen that the exterior materials for power storage devices of Examples 1 to 11 effectively suppress damage to the exterior materials for power storage devices when the power storage device fixed with double-sided tape or the like is peeled off from the housing.
  • the difference between the crystallization index measured for the base material layer of the exterior material for the power storage device and the crystallization index measured for the stretched nylon film is considered to be the effect of aging of the exterior material for the power storage device.
  • the stretched nylon films used in Comparative Examples 1 and 2 had a crystallization index value significantly smaller than that of Examples 1 to 11, but the value measured after the base layer of the exterior material for the power storage device was stretched. It is considerably larger than the value measured in the state of nylon film.
  • the crystallization index of the polyamide film measured from the outside of the base material layer could not be increased to 1.50 or more by the aging of the exterior material for the power storage device, and the power storage device was peeled off.
  • the test evaluation was inferior to Examples 1 to 11.
  • Exterior materials for power storage devices (length 15 mm x width 70 mm) of Examples 1 to 11, double-sided tape (length 7.5 mm x width 60 mm) used in ⁇ Peeling test of power storage device>, and aluminum foil (thickness 35 ⁇ m).
  • a double-sided adhesive tape for fixing (length 5 mm x width 60 mm) and an acrylic plate (thickness 3 mm x length 50 mm x width 70 mm) were prepared.
  • the surface of the exterior material for the power storage device on the stretched nylon film side (Examples 4 and 5 are the surfaces of the coat layer on the stretched nylon film, and Examples 7, 9 and 11 are on the stretched nylon film.
  • the surface of the surface coating layer) and one side of the double-sided tape are bonded together, and then an aluminum foil is bonded to the other side of the double-sided tape, and a 2 kg roller is reciprocated once from the top of the aluminum foil to obtain a laminate P. It was. Further, the acrylic plate and one side of the fixing double-sided adhesive tape were bonded to obtain a laminated body Q. Further, the surface of the heat-sealing resin layer of the exterior material for the power storage device of the laminate P is attached to the other surface of the double-sided adhesive tape for fixing the laminate Q, and the surface of the heat-sealing resin layer is pressed by hand to adhere the acrylic plate and the double-sided adhesive for fixing.
  • the test sample M was stored in an environment at a temperature of 60 ° C. for 24 hours.
  • the surface of the stretched nylon film of the exterior material for the power storage device and the end portion of the double-sided tape were peeled off by about 1 mm to provide a trigger portion for measuring the peeling strength.
  • the acrylic plate of the test sample M is fixed, and a tensile tester (manufactured by Shimadzu Corporation, AG-Xplus (trade name)) is used under the conditions of a tensile angle of 180 °, a peeling speed of 300 mm / min, and a peeling distance of 50 mm or more.
  • a tensile tester manufactured by Shimadzu Corporation, AG-Xplus (trade name)
  • the aluminum foil is pulled and peeled off at the interface between the stretched nylon film surface of the exterior material for the power storage device and the double-sided tape (from the above-mentioned trigger portion), and the peeling strength at peeling distances of 10 mm, 20 mm, 30 mm, and 40 mm and 10
  • the average of the total five peel strengths of the maximum peel strengths between about 40 mm was calculated and used as the peel strength (the peel strength of the double-sided tape against the stretched nylon film (N / 7.5 mm)). The results are shown in Table 2.
  • test sample N The test sample N was stored in an environment at a temperature of 60 ° C. for 24 hours.
  • the surface of the stainless steel plate and the end portion of the double-sided tape were peeled off by about 1 mm to provide a trigger portion for measuring the peeling strength.
  • the stainless steel plate of the test sample N is fixed, and a tensile tester (manufactured by Shimadzu Corporation, AG-Xplus (trade name)) is used under the conditions of a tensile angle of 180 °, a peeling speed of 300 mm / min, and a peeling distance of 50 mm or more.
  • Item 1 From the outside, it is composed of a laminate having at least a base material layer, a barrier layer, and a thermosetting resin layer.
  • the base material layer contains a polyamide film and An exterior material for a power storage device, wherein the crystallization index of the polyamide film measured from the outside of the base material layer by the ATR method of Fourier transform infrared spectroscopy is 1.50 or more.
  • Item 2. Item 2. The exterior material for a power storage device according to Item 1, wherein an adhesive layer is provided between the base material layer and the barrier layer.
  • Item 3. Item 2.
  • the exterior material for a power storage device according to Item 1 or 2, wherein an adhesive layer is provided between the barrier layer and the thermosetting resin layer.
  • Item 4. A step of obtaining a laminate in which at least a base material layer, a barrier layer, and a thermosetting resin layer are laminated in order from the outside is provided.
  • the base material layer contains a polyamide film and A method for producing an exterior material for a power storage device, wherein the crystallization index of the polyamide film measured from the outside of the base material layer by the ATR method of Fourier transform infrared spectroscopy is 1.50 or more.
  • Item 6 A polyamide film for use in the base material layer of an exterior material for a power storage device composed of a laminate including at least a base material layer, a barrier layer, and a thermosetting resin layer.
  • the polyamide film is a polyamide film having a crystallization index of 1.50 or more as measured by the ATR method of Fourier transform infrared spectroscopy.
  • Base material layer 2 Adhesive layer 3 Barrier layer 4 Thermosetting resin layer 5 Adhesive layer 6 Surface coating layer 10 Exterior material for power storage devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Electric Double-Layer Capacitors Or The Like (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne un matériau extérieur qui est destiné à un dispositif de stockage d'énergie et qui n'est pas facilement endommagé lorsque le dispositif de stockage d'énergie, fixé à un boîtier avec une bande double face et autres, est retiré du boîtier.　Le matériau extérieur pour un stockage d'énergie selon l'invention comprend un stratifié ayant au moins une couche de substrat, une couche barrière et une couche de résine thermofusible dans cet ordre depuis l'extérieur, la couche de substrat comprenant un film de polyamide et l'indice de cristallisation du film de polyamide étant de 1,50 ou plus tel que mesuré à partir de l'extérieur de la couche de substrat par ATR de la spectroscopie infrarouge à transformée de Fourier.
PCT/JP2020/019675 2019-05-17 2020-05-18 Matériau extérieur pour dispositif de stockage d'énergie, procédé de fabrication associé, dispositif de stockage d'énergie et film de polyamide WO2020235534A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2020547255A JP6809657B1 (ja) 2019-05-17 2020-05-18 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
CN202080036390.1A CN113825638B (zh) 2019-05-17 2020-05-18 蓄电装置用外包装材料、其制造方法、蓄电装置和聚酰胺膜

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2019-093552 2019-05-17
JP2019093552 2019-05-17
JP2019-176188 2019-09-26
JP2019176188 2019-09-26

Publications (1)

Publication Number Publication Date
WO2020235534A1 true WO2020235534A1 (fr) 2020-11-26

Family

ID=73459388

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2020/019675 WO2020235534A1 (fr) 2019-05-17 2020-05-18 Matériau extérieur pour dispositif de stockage d'énergie, procédé de fabrication associé, dispositif de stockage d'énergie et film de polyamide

Country Status (3)

Country Link
JP (2) JP6809657B1 (fr)
CN (1) CN113825638B (fr)
WO (1) WO2020235534A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7060185B1 (ja) * 2020-11-25 2022-04-26 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
WO2022114024A1 (fr) * 2020-11-25 2022-06-02 大日本印刷株式会社 Matériau d'emballage externe pour dispositifs de stockage d'énergie, procédé de production de celui-ci, et dispositif de stockage d'énergie
WO2023136360A1 (fr) * 2022-01-17 2023-07-20 大日本印刷株式会社 Matériau extérieur pour dispositif de stockage d'électricité, son procédé de fabrication, composition de résine et dispositif de stockage d'électricité

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7234794B2 (ja) * 2019-05-17 2023-03-08 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、蓄電デバイス、及びポリアミドフィルム

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06286067A (ja) * 1993-03-31 1994-10-11 Toray Ind Inc 樹脂含浸繊維シート
JP2015051528A (ja) * 2013-09-05 2015-03-19 出光ユニテック株式会社 二軸延伸ナイロンフィルム、ラミネートフィルム、ラミネート包材、電池および二軸延伸ナイロンフィルムの製造方法
WO2015141448A1 (fr) * 2014-03-20 2015-09-24 大日本印刷株式会社 Matériau d'emballage pour batteries, batterie, et procédés de production associés

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994022941A1 (fr) * 1993-03-31 1994-10-13 Toray Industries, Inc. Feuille en fibres impregnees de resine
JP2003103729A (ja) * 2001-09-28 2003-04-09 Showa Denko Plastic Products Co Ltd 積層体、シーラントフィルム及び容器
JP2009234131A (ja) * 2008-03-28 2009-10-15 Unitika Ltd 二軸延伸ポリアミド樹脂フィルムの製造方法
JP2012033394A (ja) * 2010-07-30 2012-02-16 Fujimori Kogyo Co Ltd 電池外装用積層体
JP2014124947A (ja) * 2012-12-27 2014-07-07 Idemitsu Unitech Co Ltd 二軸延伸ナイロンフィルム、ラミネートフィルム、ラミネート包材および二軸延伸ナイロンフィルムの製造方法
JP2014231365A (ja) * 2013-05-28 2014-12-11 凸版印刷株式会社 ガスバリア性包装材料
US10396316B2 (en) * 2015-03-25 2019-08-27 Dai Nippon Printing Co., Ltd. Cell packaging material and cell
JP6754589B2 (ja) * 2016-02-29 2020-09-16 藤森工業株式会社 樹脂被覆金属積層体、電池外装体及び電池
CN108701778B (zh) * 2016-10-05 2021-08-03 大日本印刷株式会社 电池用包装材料、其制造方法和电池
JP6420424B2 (ja) * 2017-07-25 2018-11-07 藤森工業株式会社 電池外装用積層体

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06286067A (ja) * 1993-03-31 1994-10-11 Toray Ind Inc 樹脂含浸繊維シート
JP2015051528A (ja) * 2013-09-05 2015-03-19 出光ユニテック株式会社 二軸延伸ナイロンフィルム、ラミネートフィルム、ラミネート包材、電池および二軸延伸ナイロンフィルムの製造方法
WO2015141448A1 (fr) * 2014-03-20 2015-09-24 大日本印刷株式会社 Matériau d'emballage pour batteries, batterie, et procédés de production associés

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7060185B1 (ja) * 2020-11-25 2022-04-26 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
WO2022114024A1 (fr) * 2020-11-25 2022-06-02 大日本印刷株式会社 Matériau d'emballage externe pour dispositifs de stockage d'énergie, procédé de production de celui-ci, et dispositif de stockage d'énergie
WO2023136360A1 (fr) * 2022-01-17 2023-07-20 大日本印刷株式会社 Matériau extérieur pour dispositif de stockage d'électricité, son procédé de fabrication, composition de résine et dispositif de stockage d'électricité

Also Published As

Publication number Publication date
CN113825638A (zh) 2021-12-21
JP6809657B1 (ja) 2021-01-06
CN113825638B (zh) 2024-03-29
JPWO2020235534A1 (ja) 2021-06-10
JP2021061244A (ja) 2021-04-15

Similar Documents

Publication Publication Date Title
JP6809657B1 (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
JP2021012876A (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
WO2020085462A1 (fr) Matériau de boîtier pour dispositif de stockage d'énergie, son procédé de production et dispositif de stockage d'énergie
JP6819839B1 (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
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
JPWO2020071254A1 (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
WO2021230251A1 (fr) Matériau d'extérieur pour dispositif de stockage d'énergie, son procédé de fabrication et dispositif de stockage d'énergie
WO2021201294A1 (fr) Boîtier extérieur pour dispositifs de stockage d'électricité, procédé de fabrication dudit boîtier extérieur et dispositif de stockage d'électricité
JP7024935B1 (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
WO2021020583A1 (fr) Matériau extérieur pour dispositif de stockage d'électricité, son procédé de fabrication et dispositif de stockage d'électricité
WO2020204185A1 (fr) Matériau d'emballage externe pour dispositifs de stockage d'électricité, son procédé de production, et dispositif de stockage d'électricité
WO2022114024A1 (fr) Matériau d'emballage externe pour dispositifs de stockage d'énergie, procédé de production de celui-ci, et dispositif de stockage d'énergie
JP7060185B1 (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
WO2021215538A1 (fr) Matériau extérieur pour dispositif de stockage d'énergie, son procédé de fabrication et dispositif de stockage d'énergie
WO2021157673A1 (fr) Matériau extérieur pour dispositif de stockage électrique, son procédé de fabrication et dispositif de stockage électrique
JP6870777B2 (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
JP6828777B1 (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
WO2021162059A1 (fr) Matériau extérieur pour dispositif de stockage électrique, procédé de fabrication dudit matériau extérieur, et dispositif de stockage électrique
WO2020085461A1 (fr) Matériau de conditionnement pour dispositif de stockage d'énergie, son procédé de production et dispositif de stockage d'énergie
JP2021103687A (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
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
JP2021077647A (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
CN118124220A (zh) 蓄电装置用外包装材料、其制造方法、蓄电装置和聚酰胺膜

Legal Events

Date Code Title Description
ENP Entry into the national phase

Ref document number: 2020547255

Country of ref document: JP

Kind code of ref document: A

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20809964

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20809964

Country of ref document: EP

Kind code of ref document: A1