WO2022168900A1 - Échangeur de chaleur - Google Patents

Échangeur de chaleur Download PDF

Info

Publication number
WO2022168900A1
WO2022168900A1 PCT/JP2022/004195 JP2022004195W WO2022168900A1 WO 2022168900 A1 WO2022168900 A1 WO 2022168900A1 JP 2022004195 W JP2022004195 W JP 2022004195W WO 2022168900 A1 WO2022168900 A1 WO 2022168900A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
heat exchanger
plate
acid
resin
Prior art date
Application number
PCT/JP2022/004195
Other languages
English (en)
Japanese (ja)
Inventor
和史 小谷
敦子 高萩
昌保 山崎
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 JP2022579595A priority Critical patent/JPWO2022168900A1/ja
Publication of WO2022168900A1 publication Critical patent/WO2022168900A1/fr

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements

Definitions

  • the present invention relates to heat exchangers.
  • Patent Literature 1 discloses a heat exchanger for cooling batteries.
  • This heat exchanger includes an exterior body and inner fins housed in the exterior body.
  • the inner fins are made of a sheet material, and are accommodated in the exterior body while being bent so as to form tunnels and grooves through which cooling water flows.
  • the heat exchanger is arranged near the battery, for example, when the battery expands, the battery may push the inner fins and deform the inner fins. In addition, when some external force acts on the inner fins, the inner fins may be deformed. When the tunnel portions and groove portions of the inner fins are deformed, the amount of cooling water flowing is reduced, and the battery may not be sufficiently cooled. Such a problem exists even when heating the heat exchange object, and also when cooling and warming the heat exchange object so that the temperature of the heat exchange object is maintained within a predetermined temperature range. can occur as well.
  • An object of the present invention is to provide a heat exchanger capable of suppressing deformation of the heat exchange medium flow path.
  • a heat exchanger includes a plate in which a flow path for a heat exchange medium is formed, a container that covers the flow path, and the A supply member through which a heat exchange medium passes, and a discharge member attached to an outlet of the flow path and through which the heat exchange medium flowing outward from the outlet is provided.
  • a heat exchanger according to a second aspect of the present invention is the heat exchanger according to the first aspect, wherein at least part of the surface of the plate is joined to the inner surface of the container.
  • a heat exchanger according to a third aspect of the present invention is the heat exchanger according to the first aspect or the second aspect, wherein at least one of the supply member and the discharge member defines a passage through which the heat exchange medium passes. and a projection projecting from the body, wherein the plate has a recess into which the projection fits.
  • a heat exchanger according to a fourth aspect of the present invention is the heat exchanger according to any one of the first aspect to the third aspect, wherein the flow path extends in the first direction in plan view of the plate. It includes a first portion extending and a second portion extending in a second direction that intersects the first direction.
  • a heat exchanger according to a fifth aspect of the present invention is the heat exchanger according to any one of the first aspect to the fourth aspect, wherein the container is formed along the side surface of the plate. Includes seal.
  • a heat exchanger according to a sixth aspect of the present invention is the heat exchanger according to the fifth aspect, wherein the side seal portion is in contact with the side surface of the plate.
  • a heat exchanger according to a seventh aspect of the present invention is the heat exchanger according to any one of the first aspect to the sixth aspect, wherein the channel is a groove penetrating the plate.
  • a heat exchanger according to an eighth aspect of the present invention is the heat exchanger according to any one of the first to sixth aspects, wherein the flow path is a groove that does not penetrate the plate.
  • the heat exchanger of the present invention it is possible to suppress the deformation of the flow path of the heat exchange medium.
  • FIG. 2 is a cross-sectional view taken along line D2-D2 of FIG. 1;
  • FIG. 2 is a diagram showing an example of the layer structure of the sheet of FIG. 1;
  • FIG. 2 is an enlarged view of the supply member in FIG. 1 and its surroundings; 1.
  • the figure regarding the cutting process of the manufacturing method of the heat exchanger of FIG. 2 is a diagram relating to a sheet bonding step in the method for manufacturing the heat exchanger of FIG. 1; 1.
  • the figure regarding the cutting process of the manufacturing method of the heat exchanger of FIG. The perspective view of the plate with which the heat exchanger of a modification is provided.
  • FIG. 11 is an enlarged view of a supply member and its surroundings provided in a heat exchanger of a modified example;
  • FIG. 1 is a plan view of a heat exchanger 10 according to this embodiment.
  • FIG. 2 is a cross-sectional view of heat exchanger 10 taken along line D2-D2 in FIG.
  • the heat exchanger 10 is used to cool or heat a heat exchange object via a heat exchange medium. Cooling or warming the heat exchange object includes maintaining the temperature of the heat exchange object within a predetermined temperature range by repeatedly cooling and warming the heat exchange object.
  • a heat exchange object is, for example, a battery.
  • the battery is, for example, a lithium ion battery.
  • heat exchanger 10 is arranged to be interposed between a plurality of cells or modules of a lithium ion battery.
  • the heat exchanger 10 is used to keep the temperature of the heat exchange object below a predetermined temperature by cooling the heat exchange object. Therefore, in this embodiment, the heat exchange medium is, for example, cooling water or antifreeze.
  • the heat exchange medium is hot water, for example.
  • the heat exchange medium is cooling water and hot water, for example.
  • the heat exchanger 10 is, for example, a pouch type. Therefore, the degree of freedom in shape is enhanced. Moreover, the heat exchanger 10 can be made lightweight. Types of pouches include, for example, a three-side seal type, a four-side seal type, a pillow type, or a gusset type. Heat exchanger 10 includes plate 20 , vessel 30 , supply member 40 and exhaust member 50 . In addition, in FIG. 1, components that are originally invisible from the outside are partially indicated by broken lines for reference. Hereinafter, for convenience of explanation, unless otherwise specified, the vertical direction in FIG. It is called height direction.
  • the plate 20 is formed with flow channels 21 for the heat exchange medium.
  • the material forming the plate 20 is a material that does not substantially deform even when the heat exchanger 10 is subjected to an assumed magnitude of external force under the normal use environment.
  • the material forming the plate 20 is synthetic resin, metal, or metal oxide. Synthetic resins include, for example, polyesters, polyolefins, polyamides, polyimides, polymethyltempene, polyphenylene oxides, polysulfones, polyethersulfones, polyphenylsulfones, polyarylates, polyetheretherketones, polyphenylenesulfides, fluororesins, polyarylates, etc. is.
  • Polyolefin specifically includes medium-density polyethylene, high-density polyethylene, linear low-density polyethylene, ethylene- ⁇ -olefin copolymer, polypropylene, polybutene, polyisobutene, polyisobutylene, polybutadiene, polyisoprene, and ethylene-methacryl.
  • They include acid copolymers, copolymers of ethylene and unsaturated carboxylic acid such as ethylene-acrylic acid copolymers, and the like.
  • metals include aluminum alloys, copper alloys, stainless steels, titanium steels, and steel plates.
  • Metal oxides include alumina, silica, titania, zirconia and the like.
  • the shape of the plate 20 in plan view can be arbitrarily selected.
  • the plate 20 has a rectangular shape in plan view.
  • the shape of the plate 20 in plan view may be a square, a triangle, a polygon with pentagons or more, a circle, or an ellipse.
  • the thickness, length and width of the plate 20 can be arbitrarily selected.
  • the heat exchanger 10 is arranged so as to be inserted between a plurality of modules, so the thickness of the plate 20 is approximately 1 mm to 2 mm.
  • the length and width are determined based on the size of the heat exchange object.
  • the plate 20 has an upper surface 20A, a lower surface 20B (see FIG. 2), a pair of first side surfaces 20CX and 20CY extending in the left-right direction, and a pair of second side surfaces 20DX and 20DY extending in the width direction. At least a portion of the upper surface 20A and the lower surface 20B of the plate 20 is preferably joined to the inner surfaces of the sheets 31 and 32 so that the plate 20 is not displaced with respect to the container 30 in the left-right direction and the width direction. In this embodiment, the entire upper surface 20A of the plate 20 is joined to the inner surface of the sheet 32, and the entire lower surface 20B of the plate 20 is joined to the inner surface of the sheet 31.
  • the flow paths 21 are grooves penetrating the plate 20 .
  • the width of the channel 21 in plan view can be arbitrarily selected.
  • the width LA is approximately constant. Width LA may vary.
  • the shape of the flow path 21 in plan view can be arbitrarily selected.
  • the channel 21 has a first portion 21X extending in the first direction and a second portion 21X extending in a direction intersecting the first direction when the plate 20 is viewed from above. It is preferable to include the portion 21Y.
  • the first direction is the horizontal direction
  • the second direction is the width direction.
  • the channel 21 has five first portions 21X and four second portions 21Y.
  • the five first portions 21X are arranged at predetermined intervals along the width direction.
  • the four second portions 21Y connect the first portions 21X adjacent in the width direction.
  • the first direction may be a direction that intersects with the left-right direction in plan view of the plate 20 .
  • the second direction may be a direction that intersects the width direction in plan view of the plate 20 .
  • the flow path 21 may have a curved portion.
  • Container 30 is configured to include sheet 31 and sheet 32 .
  • side seal portions 60 extending in the left-right direction are formed.
  • the side seal portion 60 is a portion where the sheets 31 and 32 are heat-sealed and fused together.
  • the mode of heat sealing referred to herein includes modes such as thermal fusion from a heat source and ultrasonic fusion.
  • the side seal portion 60 means a portion where the sheets 31 and 32 are fused and integrated. The sheets 31 and 32 are not fused together except for the portions where the side seal portions 60 are formed.
  • the sheets 31 and 32 are composed of resin molded products or films, for example.
  • the resin molded product referred to here can be manufactured by methods such as injection molding, pressure molding, vacuum molding, and blow molding, and in-mold molding may be performed to impart design and functionality.
  • the type of resin can be polyolefin, polyester, nylon, ABS, and the like.
  • the film referred to here is, for example, a resin film that can be produced by a method such as an inflation method or a T-die method, or a laminate of such a resin film on a metal foil.
  • the film referred to here may or may not be stretched, and may be a single-layer film or a multilayer film.
  • the multilayer film referred to here may be produced by a coating method, may be produced by adhering a plurality of films with an adhesive or the like, or may be produced by a multilayer extrusion method.
  • the sheets 31 and 32 can be configured in various ways, but in this embodiment, the sheets 31 and 32 are composed of the laminated film shown in FIG. 3, for example.
  • the laminate film can be a laminate in which a substrate layer 1, an adhesive layer 2, a barrier layer 3, a heat-fusible resin layer 4, and an adhesive layer 5 are laminated.
  • the base material layer 1 functions as a base material for the sheets 31 and 32, typically forms the outer layer side of the container 30, and is an insulating resin layer.
  • the barrier layer 3 has a function of improving the strength of the sheets 31 and 32 and at least preventing moisture from entering the flow path 21, and is typically a metal layer made of aluminum alloy foil or the like.
  • the heat-sealable resin layer 4 and the adhesive layer 5 are typically made of a heat-sealable resin such as polyolefin, and form the innermost layer of the container 30 .
  • a heat-sealable resin such as polyolefin
  • the base material layer 1 is a layer provided for the purpose of exhibiting a function as a base material for the sheets 31 and 32 .
  • the base material layer 1 is positioned on the outer layer side of the sheets 31 and 32 .
  • the material forming the base material layer 1 is not particularly limited as long as it functions as a base material, that is, at least has insulating properties.
  • the base material layer 1 can be formed using, for example, a resin, and the resin may contain additives described later.
  • the substrate layer 1 may be, for example, a resin film made of resin, or may be formed by applying resin.
  • the resin film may be an unstretched film or a stretched film.
  • stretched films include uniaxially stretched films and biaxially stretched films, with biaxially stretched films being preferred.
  • stretching methods for forming a biaxially stretched film include successive biaxial stretching, inflation, and simultaneous biaxial stretching.
  • Methods for applying the resin include a roll coating method, a gravure coating method, an extrusion coating method, and the like.
  • resins forming the base material layer 1 include resins such as polyester, polyamide, polyolefin, epoxy resin, acrylic resin, fluororesin, polyurethane, silicon resin, phenolic resin, and modified products of these resins. Further, the resin forming the base material layer 1 may be a copolymer of these resins or a modified product of the copolymer. Furthermore, it may be a mixture of these resins.
  • polyesters and polyamides are preferred as resins forming the base material layer 1 .
  • polyester examples include polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polybutylene naphthalate, polyethylene isophthalate, and copolymerized polyester.
  • copolyester examples include copolyester having ethylene terephthalate as a main repeating unit.
  • copolymer polyester polymerized with ethylene isophthalate with ethylene terephthalate as the main repeating unit hereinafter abbreviated after polyethylene (terephthalate / isophthalate)
  • polyethylene (terephthalate / adipate) polyethylene (terephthalate / sodium sulfoisophthalate)
  • polyethylene (terephthalate/sodium isophthalate) polyethylene (terephthalate/phenyl-dicarboxylate), polyethylene (terephthalate/decanedicarboxylate), and the like.
  • These polyesters may be used singly or in combination of two or more.
  • polyamide specifically, aliphatic polyamide such as nylon 6, nylon 66, nylon 610, nylon 12, nylon 46, copolymer of nylon 6 and nylon 66; terephthalic acid and / or isophthalic acid Nylon 6I, nylon 6T, nylon 6IT, nylon 6I6T (I represents isophthalic acid, T represents terephthalic acid) containing structural units derived from hexamethylenediamine-isophthalic acid-terephthalic acid copolymer polyamide, polyamide MXD6 (polymetallic Polyamides containing aromatics such as silylene adipamide); alicyclic polyamides such as polyamide PACM6 (polybis(4-aminocyclohexyl)methane adipamide); Copolymerized polyamides, polyesteramide copolymers and polyetheresteramide copolymers which are copolymers of copolymerized polyamides with polyesters or polyalkylene ether glycols; and polyamides such
  • the substrate layer 1 preferably includes at least one of a polyester film, a polyamide film, and a polyolefin film, preferably includes at least one of an oriented polyester film, an oriented polyamide film, and an oriented polyolefin film, More preferably, at least one of an oriented polyethylene terephthalate film, an oriented polybutylene terephthalate film, an oriented nylon film, and an oriented polypropylene film is included, and a biaxially oriented polyethylene terephthalate film, a biaxially oriented polybutylene terephthalate film, and a biaxially oriented nylon film. , biaxially oriented polypropylene film.
  • the base material layer 1 may be a single layer, or may be composed of two or more layers.
  • the substrate layer 1 may be a laminate obtained by laminating resin films with an adhesive or the like, or may be formed by co-extrusion of resin to form two or more layers. It may also be a laminate of resin films. A laminate of two or more resin films formed by coextrusion of resin may be used as the base material layer 1 without being stretched, or may be used as the base material layer 1 by being uniaxially or biaxially stretched.
  • the laminate of two or more resin films in the substrate layer 1 include a laminate of a polyester film and a nylon film, a laminate of nylon films of two or more layers, and a laminate of polyester films of two or more layers. etc., preferably a laminate of a stretched nylon film and a stretched polyester film, a laminate of two or more layers of stretched nylon films, and a laminate of two or more layers of stretched polyester films.
  • the substrate layer 1 is a laminate of two layers of resin films, a laminate of polyester resin films and polyester resin films, a laminate of polyamide resin films and polyamide resin films, or a laminate of polyester resin films and polyamide resin films.
  • a laminate is preferred, and a laminate of polyethylene terephthalate film and polyethylene terephthalate film, a laminate of nylon film and nylon film, or a laminate of polyethylene terephthalate film and nylon film is more preferred.
  • the polyester resin is resistant to discoloration when, for example, an electrolytic solution adheres to the surface. It is preferably located in the outermost layer.
  • the two or more layers of resin films may be laminated via an adhesive.
  • Preferred adhesives include those similar to those exemplified for the adhesive layer 2 described later.
  • the method for laminating two or more layers of resin films is not particularly limited, and known methods can be employed. Examples thereof include dry lamination, sandwich lamination, extrusion lamination, thermal lamination, and the like. A lamination method is mentioned.
  • the thickness of the adhesive is, for example, about 2 to 5 ⁇ m.
  • an anchor coat layer may be formed on the resin film and laminated.
  • the anchor coat layer the same adhesives as those exemplified for the adhesive layer 2 described later can be used. At this time, the thickness of the anchor coat layer is, for example, about 0.01 to 1.0 ⁇ m.
  • At least one of the surface and the inside of the substrate layer 1 may contain additives such as lubricants, flame retardants, antiblocking agents, antioxidants, light stabilizers, tackifiers, and antistatic agents. good. Only one type of additive may be used, or two or more types may be mixed and used.
  • the surface of the base material layer 1 contains a lubricant.
  • the lubricant is not particularly limited, but preferably includes an amide-based lubricant.
  • Specific examples of amide lubricants include saturated fatty acid amides, unsaturated fatty acid amides, substituted amides, methylolamides, saturated fatty acid bisamides, unsaturated fatty acid bisamides, fatty acid ester amides, and aromatic bisamides.
  • Specific examples of saturated fatty acid amides include lauric acid amide, palmitic acid amide, stearic acid amide, behenic acid amide, and hydroxystearic acid amide.
  • unsaturated fatty acid amides include oleic acid amide and erucic acid amide.
  • substituted amides include N-oleyl palmitic acid amide, N-stearyl stearic acid amide, N-stearyl oleic acid amide, N-oleyl stearic acid amide, N-stearyl erucic acid amide and the like.
  • methylolamide include methylol stearamide.
  • saturated fatty acid bisamide examples include methylenebisstearic acid amide, ethylenebiscapric acid amide, ethylenebislauric acid amide, ethylenebisstearic acid amide, ethylenebishydroxystearic acid amide, ethylenebisbehenic acid amide, hexamethylenebisstearin. acid amide, hexamethylenebisbehenamide, hexamethylenehydroxystearic acid amide, N,N'-distearyladipic acid amide, N,N'-distearylsebacic acid amide and the like.
  • unsaturated fatty acid bisamides include ethylenebisoleic acid amide, ethylenebiserucic acid amide, hexamethylenebisoleic acid amide, N,N'-dioleyladipic acid amide, and N,N'-dioleylsebacic acid amide. etc.
  • fatty acid ester amides include stearamide ethyl stearate.
  • aromatic bisamide include m-xylylenebisstearic acid amide, m-xylylenebishydroxystearic acid amide, N,N'-distearyl isophthalic acid amide and the like.
  • Lubricants may be used singly or in combination of two or more.
  • a lubricant exists on the surface of the base material layer 1, its amount is not particularly limited, but is preferably about 3 mg/m 2 or more, more preferably about 4 to 15 mg/m 2 , still more preferably 5 to 14 mg. / m 2 degree.
  • the lubricant present on the surface of the substrate layer 1 may be obtained by exuding the lubricant contained in the resin constituting the substrate layer 1, or by coating the surface of the substrate layer 1 with the lubricant.
  • the thickness of the base material layer 1 is not particularly limited as long as it functions as a base material, but it is, for example, about 3 to 50 ⁇ m, preferably about 10 to 35 ⁇ m.
  • the thickness of each resin film constituting each layer is preferably about 2 to 25 ⁇ m.
  • the 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 between them.
  • the adhesive layer 2 is made of an adhesive that can bond the base material layer 1 and the barrier layer 3 together.
  • the adhesive used to form the adhesive layer 2 is not limited, but may be any of a chemical reaction type, a solvent volatilization type, a hot melt type, a hot pressure type, and the like. Further, it may be a two-liquid curing adhesive (two-liquid adhesive), a one-liquid curing adhesive (one-liquid adhesive), or a resin that does not involve a curing reaction. Further, the adhesive layer 2 may be a single layer or multiple layers.
  • the adhesive component contained in the adhesive include polyesters such as polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polybutylene naphthalate, polyethylene isophthalate, and copolymerized polyester; polyether; polyurethane; epoxy resin; Phenolic resins; polyamides such as nylon 6, nylon 66, nylon 12, and copolyamides; polyolefin resins such as polyolefins, cyclic polyolefins, acid-modified polyolefins, and acid-modified cyclic polyolefins; polyvinyl acetate; cellulose; (meth)acrylic resins; polyimide; polycarbonate; amino resin such as urea resin and melamine resin; rubber such as chloroprene rubber, nitrile rubber and styrene-butadiene rubber; These adhesive components may be used singly or in combination of two or more.
  • polyurethane adhesives are preferred.
  • an appropriate curing agent can be used in combination with these adhesive component resins to increase the adhesive strength.
  • the curing agent is selected from among polyisocyanates, polyfunctional epoxy resins, oxazoline group-containing polymers, polyamine resins, acid anhydrides, etc., depending on the functional groups of the adhesive component.
  • polyurethane adhesives examples include polyurethane adhesives containing a main agent containing a polyol compound and a curing agent containing an isocyanate compound.
  • Preferred examples include a two-pack curable polyurethane adhesive that uses a polyol such as polyester polyol, polyether polyol, and acrylic polyol as a main component and an aromatic or aliphatic polyisocyanate as a curing agent.
  • the polyol compound it is preferable to use a polyester polyol having a hydroxyl group in a side chain in addition to the terminal hydroxyl group of the repeating unit. Since the adhesive layer 2 is made of a polyurethane adhesive, the sheets 31 and 32 are provided with excellent electrolytic solution resistance, and peeling of the base layer 1 is suppressed even if the electrolytic solution adheres to the side surfaces.
  • the adhesive layer 2 may contain other components as long as they do not impede adhesion, and may contain colorants, thermoplastic elastomers, tackifiers, fillers, and the like. Since the adhesive layer 2 contains a coloring agent, the sheets 31 and 32 can be colored. Known substances such as pigments and dyes can be used as the colorant. In addition, only one type of colorant may be used, or two or more types may be mixed and used.
  • the type of pigment is not particularly limited as long as it does not impair the adhesiveness of the adhesive layer 2.
  • organic pigments include azo-based, phthalocyanine-based, quinacridone-based, anthraquinone-based, dioxazine-based, indigothioindigo-based, perinone-perylene-based, isoindolenine-based, and benzimidazolone-based pigments.
  • pigments include carbon black, titanium oxide, cadmium, lead, chromium oxide, and iron pigments, as well as fine powder of mica and fish scale foil.
  • coloring agents for example, carbon black is preferable in order to make the appearance of the sheets 31 and 32 black.
  • the average particle size of the pigment is not particularly limited, and is, for example, about 0.05 to 5 ⁇ m, preferably about 0.08 to 2 ⁇ m.
  • the average particle size of the pigment is the median size measured with a laser diffraction/scattering particle size distribution analyzer.
  • the pigment content in the adhesive layer 2 is not particularly limited as long as the sheets 31 and 32 are colored, and is, for example, about 5 to 60% by mass, preferably 10 to 40% by mass.
  • the thickness of the adhesive layer 2 is not particularly limited as long as the substrate layer 1 and the barrier layer 3 can be adhered, but is, for example, about 1 ⁇ m or more, or about 2 ⁇ m or more. Moreover, the thickness of the adhesive layer 2 is, for example, about 10 ⁇ m or less, or about 5 ⁇ m or less. Preferred ranges for the thickness of the adhesive layer 2 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 as necessary between the base layer 1 and the barrier layer 3 (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 outside the base material layer 1 . By providing a colored layer, the sheets 31 and 32 can be colored.
  • the colored layer can be formed, for example, by applying ink containing a coloring agent to the surface of the base material layer 1 or the surface of the barrier layer 3 .
  • a coloring agent such as pigments and dyes can be used as the colorant.
  • only one type of colorant may be used, or two or more types may be mixed and used.
  • colorant contained in the colored layer are the same as those exemplified in the [Adhesive layer 2] column.
  • the barrier layer 3 is a layer that at least prevents permeation of moisture.
  • the barrier layer 3 examples include a metal foil, vapor deposition film, and resin layer having barrier properties.
  • vapor-deposited films include metal vapor-deposited films, inorganic oxide vapor-deposited films, and carbon-containing inorganic oxide vapor-deposited films.
  • the barrier layer 3 may also include a resin film provided with at least one of these deposited films and 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 aluminum alloys, stainless steels, titanium steels, and steel plates. When used as metal foils, at least one of aluminum alloy foils and stainless steel foils is included. is preferred.
  • the aluminum alloy foil is more preferably a soft aluminum alloy foil made of, for example, an annealed aluminum alloy. , an aluminum alloy foil containing iron.
  • 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, sheets 31 and 32 having better formability can be obtained.
  • the iron content is 9.0% by mass or less, the sheets 31 and 32 with more excellent flexibility can be obtained.
  • the soft aluminum alloy foil for example, an aluminum alloy having a composition specified by JIS H4160: 1994 A8021H-O, JIS H4160: 1994 A8079H-O, JIS H4000: 2014 A8021P-O, or JIS H4000: 2014 A8079P-O foil.
  • silicon, magnesium, copper, manganese, etc. may be added as needed.
  • softening can be performed by annealing treatment or the like.
  • stainless steel foils include austenitic, ferritic, austenitic/ferritic, martensitic, and precipitation hardened stainless steel foils. Furthermore, from the viewpoint of providing the sheets 31 and 32 with excellent moldability, the stainless steel foil is preferably made of austenitic stainless steel.
  • austenitic stainless steel that constitutes the stainless steel foil
  • SUS304 is particularly preferable.
  • the thickness of the barrier layer 3 should be at least as long as it functions as a barrier layer that suppresses the intrusion of moisture.
  • the thickness of the barrier layer 3 is preferably about 85 ⁇ m or less, more preferably about 50 ⁇ m or less, even more preferably about 40 ⁇ m or less, particularly preferably about 35 ⁇ m or less.
  • the thickness of the barrier layer 3 is preferably about 10 ⁇ m or more, more preferably about 20 ⁇ m or more, and more preferably about 25 ⁇ m or more.
  • Preferred ranges for the thickness are about 10 to 85 ⁇ m, about 10 to 50 ⁇ m, about 10 to 40 ⁇ m, about 10 to 35 ⁇ m, about 20 to 85 ⁇ m, about 20 to 50 ⁇ m, about 20 to 40 ⁇ m, about 20 to 35 ⁇ m, 25 to about 85 ⁇ m, about 25 to 50 ⁇ m, about 25 to 40 ⁇ m, and about 25 to 35 ⁇ m.
  • the barrier layer 3 is made of an aluminum alloy foil, the above range is particularly preferred.
  • the thickness of the stainless steel foil is preferably about 60 ⁇ m or less, more preferably about 50 ⁇ m or less, even more preferably about 40 ⁇ m or less, and even more preferably about 40 ⁇ m or less. 30 ⁇ m or less, particularly preferably about 25 ⁇ m or less.
  • the thickness of the stainless steel foil is preferably about 10 ⁇ m or more, more preferably about 15 ⁇ m or more.
  • the preferable range of the thickness of the stainless steel foil is about 10 to 60 ⁇ m, about 10 to 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 can be mentioned.
  • the barrier layer 3 is a metal foil, it is preferable that at least the surface opposite to the base layer is provided with a corrosion-resistant film in order to prevent dissolution and corrosion.
  • the barrier layer 3 may be provided with a corrosion resistant coating on both sides.
  • the corrosion-resistant film includes, for example, hydrothermal transformation treatment such as boehmite treatment, chemical conversion treatment, anodizing treatment, plating treatment such as nickel and chromium, and corrosion prevention treatment such as applying a coating agent to the surface of the barrier layer.
  • a thin film that provides corrosion resistance to the barrier layer As the treatment for forming the corrosion-resistant film, one type may be performed, or two or more types may be used in combination. Also, not only one layer but also multiple layers can be used.
  • the hydrothermal transformation treatment and the anodizing treatment are treatments in which the surface of the metal foil is dissolved by a treatment agent to form a metal compound having excellent corrosion resistance. These treatments are sometimes included in the definition of chemical conversion treatment.
  • the barrier layer 3 has a corrosion-resistant film, the barrier layer 3 includes the corrosion-resistant film.
  • the corrosion-resistant film prevents delamination between the barrier layer (e.g., aluminum alloy foil) and the substrate layer during molding of the sheets 31 and 32, and hydrogen fluoride generated by the reaction between the electrolyte and moisture. It prevents the dissolution and corrosion of the barrier layer surface, especially dissolution and corrosion of aluminum oxide present on the barrier layer surface when the barrier layer is an aluminum alloy foil, and improves the adhesion (wettability) of the barrier layer surface. It shows 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.
  • the barrier layer e.g., aluminum alloy foil
  • corrosion-resistant coatings formed by chemical conversion treatment are known, and are mainly composed of at least one of phosphates, chromates, fluorides, triazinethiol compounds, and rare earth oxides. and corrosion-resistant coatings containing.
  • Examples of chemical conversion treatments using phosphate and chromate include chromic acid chromate treatment, phosphoric acid chromate treatment, phosphoric acid-chromate treatment, and chromate treatment.
  • Examples of compounds include chromium nitrate, chromium fluoride, chromium sulfate, chromium acetate, chromium oxalate, chromium biphosphate, chromium acetyl acetate, chromium chloride, potassium chromium sulfate, and the like.
  • Phosphorus compounds used for these treatments include sodium phosphate, potassium phosphate, ammonium phosphate, polyphosphoric acid, and the like.
  • Examples of the chromate treatment include etching chromate treatment, electrolytic chromate treatment, coating-type chromate treatment, etc., and coating-type chromate treatment is preferred.
  • the inner layer side surface of the barrier layer (for example, aluminum alloy foil) is first subjected to a well-known method such as an alkali immersion method, an electrolytic cleaning method, an acid cleaning method, an electrolytic acid cleaning method, an acid activation method, or the like.
  • metal phosphate such as Cr (chromium) phosphate, Ti (titanium) phosphate, Zr (zirconium) phosphate, Zn (zinc) phosphate is applied to the degreased surface.
  • This is a treatment in which a treatment liquid comprising a mixture is applied by a well-known coating method such as a roll coating method, a gravure printing method, or an immersion method, and then dried.
  • Various solvents such as water, alcohol-based solvents, hydrocarbon-based solvents, ketone-based solvents, ester-based solvents, and ether-based solvents can be used as the treatment liquid, and water is preferred.
  • the resin component used at this time includes polymers such as phenolic resins and acrylic resins. and the chromate treatment used.
  • the repeating units represented by the following general formulas (1) to (4) may be contained singly or in any combination of two or more. good too.
  • the acrylic resin is polyacrylic acid, acrylic acid methacrylic acid ester copolymer, acrylic acid maleic acid copolymer, acrylic acid styrene copolymer, or derivatives thereof such as sodium salts, ammonium salts, and amine salts. is preferred.
  • derivatives of polyacrylic acid such as ammonium salt, sodium salt or amine salt of polyacrylic acid are preferred.
  • polyacrylic acid means a polymer of acrylic acid.
  • the acrylic resin is preferably a copolymer of acrylic acid and dicarboxylic acid or dicarboxylic anhydride, and the ammonium salt, sodium salt, Alternatively, it is preferably an amine salt. Only one type of acrylic resin may be used, or two or more types may be mixed and used.
  • X represents a hydrogen atom, hydroxy group, alkyl group, hydroxyalkyl group, allyl group or benzyl group.
  • R 1 and R 2 are the same or different and represent a hydroxy group, an alkyl group, or a hydroxyalkyl group.
  • alkyl groups represented by X, R 1 and R 2 in general formulas (1) to (4) include methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, A linear or branched alkyl group having 1 to 4 carbon atoms such as a tert-butyl group can be mentioned.
  • hydroxyalkyl groups represented by X, R 1 and R 2 include hydroxymethyl group, 1-hydroxyethyl group, 2-hydroxyethyl group, 1-hydroxypropyl group, 2-hydroxypropyl group, 3- straight or branched chain having 1 to 4 carbon atoms substituted with one hydroxy group such as hydroxypropyl group, 1-hydroxybutyl group, 2-hydroxybutyl group, 3-hydroxybutyl group and 4-hydroxybutyl group; An alkyl group is mentioned.
  • the alkyl groups and hydroxyalkyl groups represented by X, R 1 and R 2 may be the same or different.
  • X is preferably a hydrogen atom, a hydroxy group or a hydroxyalkyl group.
  • the number average molecular weight of the aminated phenol polymer having repeating units represented by formulas (1) to (4) is, for example, preferably about 500 to 1,000,000, more preferably about 1,000 to 20,000. more preferred.
  • the aminated phenol polymer is produced, for example, by polycondensing a phenol compound or naphthol compound and formaldehyde to produce a polymer comprising repeating units represented by the general formula (1) or general formula (3), followed by formaldehyde. and an amine (R 1 R 2 NH) to introduce a functional group (--CH 2 NR 1 R 2 ) into the polymer obtained above.
  • An aminated phenol polymer is used individually by 1 type or in mixture of 2 or more types.
  • the corrosion-resistant film is formed by a coating-type corrosion prevention treatment in which a coating agent containing at least one selected from the group consisting of rare earth element oxide sol, anionic polymer, and cationic polymer is applied.
  • a thin film that is The coating agent may further contain phosphoric acid or a phosphate, a cross-linking agent for cross-linking the polymer.
  • rare earth element oxide sol rare earth element oxide fine particles (for example, particles having an average particle size of 100 nm or less) are dispersed in a liquid dispersion medium.
  • rare earth element oxides include cerium oxide, yttrium oxide, neodymium oxide, and lanthanum oxide, and cerium oxide is preferable from the viewpoint of further improving adhesion.
  • the rare earth element oxides contained in the corrosion-resistant coating can be used singly or in combination of two or more.
  • various solvents such as water, alcohol solvents, hydrocarbon solvents, ketone solvents, ester solvents, and ether solvents can be used, with water being preferred.
  • the cationic polymer include polyethyleneimine, an ionic polymer complex composed of a polymer containing polyethyleneimine and carboxylic acid, a primary amine-grafted acrylic resin obtained by graft-polymerizing a primary amine to an acrylic backbone, polyallylamine, or a derivative thereof. , aminated phenols and the like are preferred.
  • the anionic polymer is preferably poly(meth)acrylic acid or a salt thereof, or a copolymer containing (meth)acrylic acid or a salt thereof as a main component.
  • the cross-linking agent is preferably at least one selected from the group consisting of a compound having a functional group such as an isocyanate group, a glycidyl group, a carboxyl group, or an oxazoline group, and a silane coupling agent.
  • the phosphoric acid or phosphate is preferably condensed phosphoric acid or condensed phosphate.
  • fine particles of metal oxides such as aluminum oxide, titanium oxide, cerium oxide, and tin oxide, and barium sulfate are dispersed in phosphoric acid, which is applied to the surface of the barrier layer. C. or higher and formed by baking.
  • the corrosion-resistant coating may, if necessary, have a laminated structure in which at least one of a cationic polymer and an anionic polymer is further laminated.
  • a cationic polymer and anionic polymers include those described above.
  • the analysis of the composition of the corrosion-resistant coating can be performed using, for example, time-of-flight secondary ion mass spectrometry.
  • the amount of the corrosion - resistant film formed on the surface of the barrier layer 3 in the chemical conversion treatment is not particularly limited. is about 0.5 to 50 mg, preferably about 1.0 to 40 mg in terms of chromium, the phosphorus compound is about 0.5 to 50 mg, preferably about 1.0 to 40 mg in terms of phosphorus, and aminated phenol polymer is contained in a ratio of, for example, about 1.0 to 200 mg, preferably about 5.0 to 150 mg.
  • the thickness of the corrosion-resistant coating is not particularly limited, but is preferably about 1 nm to 20 ⁇ m, more preferably 1 nm to 100 nm, from the viewpoint of cohesion of the coating and adhesion to the barrier layer and the heat-sealable resin layer. about 1 nm to 50 nm, more preferably about 1 nm to 50 nm.
  • the thickness of the corrosion-resistant film can be measured by observation with a transmission electron microscope, or by a combination of observation with a transmission electron microscope and energy dispersive X-ray spectroscopy or electron beam energy loss spectroscopy.
  • secondary ions composed of Ce, P and O for example, at least one of Ce 2 PO 4 + and CePO 4 ⁇ species
  • secondary ions composed of Cr, P, and O eg, at least one of CrPO 2 + and CrPO 4 ⁇
  • Chemical conversion treatment involves applying a solution containing a compound used to form a corrosion-resistant film to the surface of the barrier layer by a bar coating method, roll coating method, gravure coating method, immersion method, etc., and then changing the temperature of the barrier layer. is carried out by heating so that the temperature is about 70 to 200°C.
  • the barrier layer may be previously subjected to a degreasing treatment by an alkali immersion method, an electrolytic cleaning method, an acid cleaning method, an electrolytic acid cleaning method, or the like. By performing the degreasing treatment in this way, it becomes possible to perform the chemical conversion treatment on the surface of the barrier layer more efficiently.
  • the heat-fusible resin layer 4 corresponds to the innermost layer, and the heat-fusible resin layers are heat-fused to seal the plate 20 when the heat exchanger 10 is manufactured. It is a layer (sealant layer) that exhibits its function.
  • the heat-fusible resin layer 4 contains polypropylene and polyethylene.
  • a sea-island structure is observed in a cross-sectional image of the heat-fusible resin layer 4 taken in the direction parallel to the TD and in the thickness direction y using a scanning electron microscope. .
  • Propylene includes homopolypropylene, block copolymers of polypropylene (e.g. block copolymers of propylene and ethylene, block copolymers of propylene and butene, block copolymers of propylene, ethylene and butene, preferably block copolymers of propylene and ethylene), polypropylene. (e.g. random copolymers of propylene and ethylene, random copolymers of propylene and butene, random copolymers of propylene, ethylene and butene, preferably random copolymers of propylene and ethylene), propylene-alpha olefin copolymers, etc. mentioned.
  • block copolymers of polypropylene e.g. block copolymers of propylene and ethylene, block copolymers of propylene and butene, block copolymers of propylene, ethylene and butene, preferably block copolymers of propylene and ethylene
  • Ethylene includes low-density polyethylene, medium-density polyethylene, high-density polyethylene, linear low-density polyethylene, ethylene- ⁇ -olefin copolymer, and the like.
  • the polypropylene and polyethylene contained in the heat-fusible resin layer 4 may be of one kind, or may be of two or more kinds.
  • the heat-fusible resin layer 4 is preferably made of a polypropylene resin composition containing 45% by mass or less of polyethylene.
  • the polyethylene content is, for example, about 45% by mass or less, preferably about 30% by mass or less, more preferably about 20% by mass or less, and preferably about 5% by mass or more, more preferably about 10% by mass or more.
  • a preferred range is about 5 to 45% by mass, about 5 to 30% by mass, about 5 to 20% by mass, about 10 to 45% by mass, about 10 to 30% by mass, and about 10 to 20% by mass. mentioned.
  • the content rate of polypropylene is 95 mass % or less and 90 mass % or less, for example.
  • the content rate of polypropylene is 55 mass % or more, 70 mass % or more, and 80 mass % or more, for example.
  • the preferable range of the polypropylene content is about 55 to 95% by mass, about 70 to 95% by mass, about 80 to 95% by mass, about 55 to 90% by mass, about 70 to 90% by mass, and 80 to 90% by mass. degree.
  • the mass ratio of polypropylene and polyethylene in the polypropylene resin composition is preferably about 5 to 80 parts by mass, more preferably about 5 to 45 parts by mass, more preferably about 10 parts by mass with respect to 100 parts by mass of polypropylene. up to about 30 parts by mass.
  • the heat-fusible resin layer 4 may contain other resins in addition to polypropylene and polyethylene.
  • Other resins include, for example, acid-modified polyolefins.
  • Acid-modified polyolefin is a polymer modified by block polymerization or graft polymerization of polyolefin with an acid component.
  • acid-modified polyolefins 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 ( propylene- ⁇ -olefin copolymers; ethylene-butene-propylene terpolymers; and the like.
  • polypropylene is preferred.
  • the polyolefin resin is a copolymer, it may be a block copolymer or a random copolymer. These polyolefin-based resins may be used alone or in combination of two or more.
  • acid-modified polyolefin a copolymer obtained by copolymerizing a polar molecule such as acrylic acid or methacrylic acid with the above polyolefin, or a polymer such as crosslinked polyolefin can be used.
  • acid components used for acid modification include carboxylic acids such as maleic acid, acrylic acid, itaconic acid, crotonic acid, maleic anhydride and itaconic anhydride, and anhydrides thereof.
  • the acid-modified polyolefin may be an acid-modified cyclic polyolefin.
  • Acid-modified cyclic polyolefin is a polymer obtained by copolymerizing a part of the monomers constituting the cyclic polyolefin in place of the acid component, or by block-polymerizing or graft-polymerizing the acid component to the cyclic polyolefin. be.
  • the acid-modified cyclic polyolefin is the same as described above.
  • the acid component used for acid modification is the same as the acid component used for modification of polyolefin.
  • Preferable acid-modified polyolefins include polyolefins modified with carboxylic acid or its anhydride, polypropylene modified with carboxylic acid or its anhydride, maleic anhydride-modified polyolefin, and maleic anhydride-modified polypropylene.
  • the heat-fusible resin layer 4 may be formed of only one layer, or may be formed of two or more layers of the same or different resins.
  • the heat-fusible resin layer 4 may contain a lubricant or the like as necessary.
  • a lubricant is not particularly limited, and known lubricants can be used. Lubricants may be used singly or in combination of two or more.
  • the lubricant is not particularly limited, but preferably includes an amide-based lubricant. Specific examples of the lubricant include those exemplified for the base material layer 1 . Lubricants may be used singly or in combination of two or more.
  • the amount of the lubricant is not particularly limited, but from the viewpoint of improving the moldability of the sheets 31 and 32, it is preferably about 10 to 50 mg/m 2 , More preferably, it is about 15 to 40 mg/m 2 .
  • the lubricant present on the surface of the heat-fusible resin layer 4 may be obtained by exuding the lubricant contained in the resin constituting the heat-fusible resin layer 4 .
  • the surface may be coated with a lubricant.
  • the thickness of the heat-fusible resin layer 4 is not particularly limited as long as the heat-fusible resin layers are heat-sealed to each other to exhibit the function of sealing the plate 20, but for example, about 100 ⁇ m or less, preferably about 85 ⁇ m or less, more preferably about 15 to 85 ⁇ m.
  • the thickness of the heat-fusible resin layer 4 is preferably about 85 ⁇ m or less, more preferably about 15 to 45 ⁇ m.
  • the thickness of the heat-fusible resin layer 4 is preferably about 20 ⁇ m or more, more preferably 35 to 85 ⁇ m. degree.
  • the heat-fusible resin layer 4 is preferably formed by melt extrusion molding. Moreover, when it has the adhesive layer 5 mentioned later, it is preferable that the adhesive layer 5 and the heat-fusible resin layer 4 are formed by melt co-extrusion molding. In the present embodiment, it is preferable to suppress the crystal growth of polyethylene in polypropylene by setting the cooling condition of the molten resin forming the heat-fusible resin layer 4 to a rapid cooling condition. When the adhesive layer 5 and the heat-fusible resin layer 4 are formed by melt co-extrusion molding, the thickness of the adhesive layer 5 is set to 15 to 45 ⁇ m, and the thickness of the heat-fusible resin layer 4 is set to 15 to 45 ⁇ m. is preferred.
  • Adhesion layer In the sheets 31 and 32 of the present embodiment, the adhesive layer 5 is optionally provided between the barrier layer 3 (or acid-resistant film) and the heat-fusible resin layer 4 in order to firmly bond them. layer.
  • the adhesive layer 5 is made of a resin capable of bonding the barrier layer 3 and the heat-fusible resin layer 4 together.
  • the resin used for forming the adhesive layer 5 for example, the same adhesives as those exemplified for the adhesive layer 2 can be used.
  • the resin used for forming the adhesive layer 5 preferably contains a polyolefin skeleton, and includes the polyolefins and acid-modified polyolefins exemplified for the heat-sealable resin layer 4 described above. Whether 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.
  • the resin forming the adhesive layer 5 is analyzed by infrared spectroscopy, it is preferable that a peak derived from maleic anhydride is detected.
  • a peak derived from maleic anhydride is detected near wavenumbers of 1760 cm ⁇ 1 and 1780 cm ⁇ 1 .
  • the peak may be too small to be detected. In that case, it can be analyzed by nuclear magnetic resonance spectroscopy.
  • the adhesive layer 5 preferably contains an acid-modified polyolefin.
  • acid-modified polyolefins are polyolefins modified with carboxylic acid or its anhydride, polypropylene modified with carboxylic acid or its anhydride, maleic anhydride-modified polyolefin, and maleic anhydride-modified polypropylene.
  • the adhesive layer 5 is made of a cured resin composition containing an acid-modified polyolefin and a curing agent. It is more preferable to be a thing.
  • Preferred examples of the acid-modified polyolefin include those mentioned above.
  • 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.
  • a cured product of a resin composition containing an acid-modified polyolefin and at least one selected from the group consisting of a compound having an isocyanate group and a compound having an epoxy group is particularly preferred.
  • the adhesive layer 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.
  • the polyester for example, an amide ester resin is preferable.
  • Amide ester resins are generally produced by the reaction of carboxyl groups and oxazoline groups. More preferably, the adhesive layer 5 is a cured product of a resin composition containing at least one of these resins and the acid-modified polyolefin.
  • the adhesive layer 5 contains an isocyanate group-containing compound, an oxazoline group-containing compound, or an unreacted product of a curing agent such as an epoxy resin
  • the presence of the unreacted product can be detected by, for example, infrared spectroscopy, It can be confirmed by a method selected from Raman spectroscopy, time-of-flight secondary ion mass spectrometry (TOF-SIMS), and the like.
  • the adhesive layer 5 contains at least one selected from the group consisting of oxygen atoms, heterocycles, C ⁇ N bonds, and C—O—C bonds It is preferably a cured product of a resin composition containing one curing agent.
  • the curing agent having a heterocyclic ring includes, for example, a curing agent having an oxazoline group, a curing agent having an epoxy group, and the like.
  • the curing agent having a C ⁇ N bond includes a curing agent having an oxazoline group, a curing agent having an isocyanate group, and the like.
  • curing agents having a C—O—C bond include curing agents having an oxazoline group, curing agents having an epoxy group, and polyurethanes.
  • the adhesive layer 5 is a cured product of a resin composition containing these curing agents, for example, gas chromatography mass spectrometry (GCMS), infrared spectroscopy (IR), time-of-flight secondary ion mass spectrometry (TOF -SIMS) and X-ray photoelectron spectroscopy (XPS).
  • GCMS gas chromatography mass spectrometry
  • IR infrared spectroscopy
  • TOF -SIMS time-of-flight secondary ion mass spectrometry
  • XPS X-ray photoelectron spectroscopy
  • the compound having an isocyanate group is not particularly limited, but from the viewpoint of effectively increasing the adhesion between the barrier layer 3 and the adhesive layer 5, polyfunctional isocyanate compounds are preferred.
  • the polyfunctional isocyanate compound is not particularly limited as long as it is a compound having two or more isocyanate groups.
  • Specific examples of polyfunctional isocyanate curing agents include pentane diisocyanate (PDI), isophorone diisocyanate (IPDI), hexamethylene diisocyanate (HDI), tolylene diisocyanate (TDI), diphenylmethane diisocyanate (MDI), polymerization and nurate compounds, mixtures thereof, copolymers with other polymers, and the like.
  • adducts, burettes, isocyanurates and the like are included.
  • 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, more preferably 0.5 to 40% by mass in the resin composition constituting the adhesive layer 5. A range is more preferred. Thereby, the adhesion between the barrier layer 3 and the adhesive layer 5 can be effectively improved.
  • the compound having an oxazoline group is not particularly limited as long as it is a compound having an oxazoline skeleton.
  • Specific examples of compounds having an oxazoline group include those having a polystyrene main chain and those having an acrylic main chain.
  • the Epocross series by Nippon Shokubai Co., Ltd. etc. are mentioned, for example.
  • the ratio of the compound having an oxazoline group in the adhesive layer 5 is preferably in the range of 0.1 to 50% by mass, more preferably 0.5 to 40% by mass, in the resin composition constituting the adhesive layer 5. is more preferable. Thereby, the adhesion between the barrier layer 3 and the adhesive layer 5 can be effectively improved.
  • Examples of compounds having an epoxy group include epoxy resins.
  • the epoxy resin is not particularly limited as long as it is a resin capable of forming a crosslinked structure with epoxy groups present in the molecule, and known epoxy resins can be used.
  • the weight average molecular weight of the epoxy resin is preferably about 50 to 2000, more preferably about 100 to 1000, still more preferably about 200 to 800.
  • the weight average molecular weight of the epoxy resin is a value measured by gel permeation chromatography (GPC) under conditions using polystyrene as a standard sample.
  • epoxy resins include glycidyl ether derivatives of trimethylolpropane, bisphenol A diglycidyl ether, modified bisphenol A diglycidyl ether, novolac glycidyl ether, glycerin polyglycidyl ether, and polyglycerin polyglycidyl ether.
  • An epoxy resin may be used individually by 1 type, and may be used in combination of 2 or more types.
  • the proportion of the epoxy resin in the adhesive layer 5 is preferably in the range of 0.1 to 50% by mass, more preferably in the range of 0.5 to 40% by mass, in the resin composition constituting the adhesive layer 5. is more preferred. Thereby, the adhesion between the barrier layer 3 and the adhesive layer 5 can be effectively improved.
  • the polyurethane is not particularly limited, and known polyurethanes can be used.
  • the adhesive layer 5 may be, for example, a cured product of two-component curing type polyurethane.
  • the proportion of polyurethane in the adhesive layer 5 is preferably in the range of 0.1 to 50% by mass, more preferably in the range of 0.5 to 40% by mass, in the resin composition constituting the adhesive layer 5. more preferred.
  • the adhesion between the barrier layer 3 and the adhesive layer 5 can be effectively enhanced in an atmosphere containing a component that induces corrosion of the barrier layer, such as an electrolytic solution.
  • 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 thickness of the adhesive layer 5 is preferably about 50 ⁇ m or less, about 45 ⁇ m or less, about 30 ⁇ m or less, about 20 ⁇ m or less, or about 5 ⁇ m or less.
  • the thickness of the adhesive layer 5 is preferably about 0.1 ⁇ m or more, about 0.5 ⁇ m or more, about 5 ⁇ m or more, about 10 ⁇ m or more, or about 15 ⁇ m or more.
  • the thickness range is preferably about 0.1 to 50 ⁇ m, about 0.1 to 45 ⁇ m, about 0.1 to 30 ⁇ m, about 0.1 to 20 ⁇ m, about 0.1 to 5 ⁇ m, 0.5 to About 50 ⁇ m, about 0.5 to 45 ⁇ m, about 0.5 to 30 ⁇ m, about 0.5 to 20 ⁇ m, about 0.5 to 5 ⁇ m, about 5 to 50 ⁇ m, about 5 to 45 ⁇ m, about 5 to 30 ⁇ m, about 5 to 20 ⁇ m , about 10-50 ⁇ m, about 10-45 ⁇ m, about 10-30 ⁇ m, about 10-20 ⁇ m, about 15-50 ⁇ m, about 15-45 ⁇ m, about 15-30 ⁇ m, about 15-20 ⁇ m.
  • the thickness is preferably about 1 to 10 ⁇ m, more preferably about 1 to 5 ⁇ m. be done.
  • a resin (acid-modified polyolefin, etc.) exemplified for the heat-fusible resin layer 4 it is preferably about 5 to 50 ⁇ m, about 5 to 45 ⁇ m, about 10 to 50 ⁇ m, about 10 to 45 ⁇ m, About 15 to 50 ⁇ m and about 15 to 45 ⁇ m can be mentioned.
  • the adhesive layer 5 is the adhesive exemplified for the adhesive layer 2 or a cured product of 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.
  • the adhesive layer 5 can be formed.
  • the resins exemplified for the heat-fusible resin layer 4 for example, the heat-fusible resin layer 4 and the adhesive layer 5 can be suitably formed by melt co-extrusion molding.
  • the material constituting the adhesive layer 5 is not limited to this.
  • a resin having a high glass transition point and a high melting point can be selected from the viewpoint of heat resistance.
  • a material that can be bonded to the plate 20 can be selected as the material forming the adhesive layer 5 .
  • a container 30 of this embodiment has a shape as shown in FIG.
  • the sheets 31 , 32 are superimposed so as to cover the entire channel 21 of the plate 20 .
  • the sheet 32 includes a linear flange portion 32A corresponding to an outer peripheral portion in a plan view, and a formed portion 32B that continues to the inner edge of the flange portion 32A and bulges upward therefrom.
  • the sheets 31, 32 are superimposed so that their outer edges are coincident. In this state, the sides of the sheets 31 and 32 near the first side surfaces 20CX and 20CY of the plate 20 are heat-sealed in the left-right direction to form the side seal portions 60 . Therefore, the plate 20 is less likely to be misaligned with respect to the container 30 in the width direction.
  • the side seal portion 60 is formed to contact the first side surfaces 20CX and 20CY of the plate 20 . Since substantially no gaps exist between the side seal portions 60 and the first side surfaces 20CX and 20CY of the plate 20, the position of the plate 20 relative to the container 30 in the width direction is more difficult to shift.
  • the edges extending in the width direction of the sheets 31, 32 and the second side surfaces 20DX, 20DY of the plate 20 are substantially flush with each other. Therefore, the second side surfaces 20DX and 20DY of the plate 20 face the outside.
  • the sheet 31 may be tray-shaped and the sheet 32 may be flat, or both the sheets 31 and 32 may be tray-shaped. In this embodiment, for example, when the heat exchange object catches fire, the heat exchange medium is taken out by breaking the portion of the sheets 31 and 32 including the side seal portion 60, extinguishing the heat exchange object. be able to.
  • the supply member 40 shown in FIG. 1 or 4 is attached to the inlet 21A of the channel 21 in the plate 20. As shown in FIG.
  • the supply member 40 is, for example, a spout.
  • the supply member 40 has a body portion 41 and a pair of projecting portions 42 projecting from the body portion 41 .
  • the body portion 41 is formed with a passage 41A through which the heat exchange medium flowing toward the inlet 21A of the flow path 21 passes.
  • a supply hose 70 for supplying the heat exchange medium to the flow path 21 is attached to the inlet 41AX of the passage 41A.
  • An outlet 41AY of the passage 41A is located inside the flow path 21 .
  • the heat exchange medium supplied by the supply hose 70 passes through the inlet 41AX and the outlet 41AY of the supply member 40 and flows into the flow path 21 .
  • the pair of projecting portions 42 are fitted into the recesses 22 formed in the plate 20 .
  • the recessed portion 22 is a portion recessed from the inner surface of the flow path 21 .
  • the shape of the pair of protrusions 42 in plan view can be arbitrarily selected. In this embodiment, the shape of the pair of protrusions 42 in plan view is triangular.
  • the shape of the pair of overhanging portions 42 in plan view may be a square, a rectangle, a polygon with pentagons or more, a semicircle, or a semiellipse. Since the pair of protrusions 42 are fitted into the recesses 22 , the supply member 40 is less likely to come off the plate 20 .
  • the discharge member 50 shown in FIG. 1 is attached to the outlet 21 B of the channel 21 in the plate 20 .
  • the discharge member 50 has a configuration similar to that of the supply member 40 .
  • the ejection member 50 has a main body portion 51 and a pair of projecting portions 52 .
  • the body portion 51 is formed with a passage 51A through which the heat exchange medium flowing toward the outlet 21B of the flow path 21 passes.
  • An inlet 51AX of the passage 51A is located inside the flow path 21 .
  • a discharge hose 80 for discharging the heat exchange medium to the outside is attached to the outlet 51AY of the passage 51A.
  • the heat exchange medium that has passed through flow path 21 flows through inlet 51AX and outlet 51AY of discharge member 50 to discharge hose 80 .
  • the material forming the supply member 40 and the discharge member 50 is, for example, synthetic resin or metal.
  • synthetic resin and metal are the materials exemplified in the description of plate 20 .
  • a method for manufacturing the heat exchanger 10 includes a cutting process, a sheet bonding process, and a cutting process.
  • a base plate 100 having a longer length in the left-right direction than the plate 20 is prepared.
  • the flow path 21 is formed in the base plate 100 by performing cutting inside the outer edge of the base plate 100 .
  • the channel 21 is a groove penetrating the base plate 100, but the inlet 21A and the outlet 21B of the channel 21 do not reach the outer edge of the base plate 100. Even when finished, the substrate plate 100 does not separate into multiple parts.
  • the base plate 100 that has undergone the cutting process is placed on the sheet 31, and the back surface of the base plate 100 and the inner surface of the sheet 31 are bonded.
  • the sheets 32 are overlapped so that the outer edge of the sheet 32 and the outer edge of the sheet 31 are aligned, and the inner surface of the sheet 32 and the surface of the base plate 100 are joined.
  • side seal portions 60 are formed.
  • the sheets 31 and 32 and the base plate 100 are cut so that the inlet 21A and the outlet 21B of the channel 21 are exposed.
  • a dashed line shown in FIG. 6 is an example of the cutting line XA of the sheets 31 , 32 and the base plate 100 .
  • the heat exchange medium flows through the outlet 41AY of the supply member 40 and the flow path 21 of the plate 20 in this order, absorbs heat from the object to be heat exchanged, passes through the outlet 51AY of the discharge member 50, and is discharged to the outside.
  • the flow paths 21 are formed in the plate 20, even if some external force acts on the heat exchanger 10 when the heat exchanger 10 is in use, the flow paths 21 are less likely to deform. Since the flow rate of the heat exchange medium in the flow path 21 is stabilized, the heat exchange object can be cooled appropriately.
  • the external force that acts on the heat exchanger 10 when the heat exchanger 10 is used is, for example, an external force that acts when the heat exchange object expands and is pressed against the heat exchanger 10 .
  • the above embodiments are examples of forms that the heat exchanger according to the present invention can take, and are not intended to limit the forms.
  • a heat exchanger according to the invention can take a form different from that illustrated in the embodiment.
  • One example is a form in which part of the configuration of the embodiment is replaced, changed, or omitted, or a form in which a new configuration is added to each embodiment.
  • the configuration of the plate 20 is not limited to that shown in the embodiment, and can be arbitrarily changed.
  • a plate 220 included in the heat exchanger 10 of the modified example shown in FIG. The number of channels 221 formed in the plate 220 can be arbitrarily selected. In this modification, the number of channels 221 formed in the plate 220 is nine. The number of channels 221 formed in the plate 220 may be 1 to 8, or 10 or more. In this modification, five channels 221 (hereinafter referred to as “upper surface channels 221X”) are formed in the upper surface 20A of the plate 220 .
  • Four channels 221 (hereinafter referred to as “lower surface channels 221Y”) are formed in the lower surface 20B of the plate 220 .
  • the upper flow channels 221X are arranged at predetermined intervals along the width direction of the plate 220 .
  • the upper flow path 221X reaches from the second side surface 20DX to the second side surface 20DY.
  • the lower surface flow paths 221Y are arranged at predetermined intervals along the width direction of the plate 220 .
  • the lower surface flow path 221Y reaches from the second side surface 20DX to the second side surface 20DY.
  • the positions in the width direction of the plate 220 are different from each other between the upper surface channel 221X and the lower surface channel 221Y. Since the plate 220 is not locally thinned, the strength of the plate 220 is less likely to decrease.
  • the upper surface flow paths 221X and the lower surface flow paths 221Y are alternately formed in the width direction of the plate 220 .
  • the supply member 40 is attached to each of the inlets 221A of the plurality of upper surface channels 221X and the plurality of lower surface channels 221Y.
  • the discharge member 50 is attached to each of the outlets 221B of the plurality of upper surface channels 221X and the plurality of lower surface channels 221Y.
  • the flow path 221 is a groove that does not pass through the plate 220, so in the cutting step of the method for manufacturing the heat exchanger 10 of the modification, the inlet 221A and the outlet 221B of the flow path 221 are formed on the substrate plate. Even if the outer edge of the base plate 100 is reached, the base plate 100 is not separated into a plurality of parts.
  • the cutting process can be omitted, so the size of the base plate 100 prepared in the cutting process is substantially the same as the size of the plate 220 .
  • the configuration of the supply member 40 is not limited to that shown in the embodiment, and can be arbitrarily changed.
  • one of the pair of projecting portions 42 may have a different shape than the other.
  • the supply member 40 has a pair of projecting portions 42, one of which has a triangular shape and the other of which has a semicircular shape.
  • the flange portion 43 may be formed on the body portion 41 and the O-ring 90 may be arranged between the flange portion 43 and the plate 20 . It should be noted that this modification can be similarly applied to the discharge member 50 as well.
  • the shapes of the supply member 40 and the discharge member 50 may be different.
  • the mounting positions of the supply member 40 and the discharge member 50 with respect to the plate 20 are not limited to those shown in the embodiment, and can be arbitrarily changed.
  • at least one of the supply member 40 and the discharge member 50 may be attached to the plate 20 so as to protrude in the height direction from the upper surface 20A or the lower surface 20B of the plate 20 .
  • the container 30 is constructed by heat-sealing the sheets 31 and 32
  • the container 30 may be constructed by folding one sheet to form the side seal portion 60 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Laminated Bodies (AREA)

Abstract

L'échangeur de chaleur de l'invention comprend : une plaque dans laquelle est formé un passage d'écoulement pour un milieu d'échange de chaleur ; un récipient qui recouvre le passage d'écoulement ; un élément d'alimentation qui est fixé à l'entrée du passage d'écoulement et à travers lequel circule le milieu d'échange de chaleur lorsqu'il s'écoule vers l'entrée ; et un élément d'évacuation qui est fixé à la sortie du passage d'écoulement et à travers lequel circule le milieu d'échange de chaleur lorsqu'il s'écoule vers l'extérieur depuis la sortie.
PCT/JP2022/004195 2021-02-04 2022-02-03 Échangeur de chaleur WO2022168900A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2022579595A JPWO2022168900A1 (fr) 2021-02-04 2022-02-03

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021016964 2021-02-04
JP2021-016964 2021-02-04

Publications (1)

Publication Number Publication Date
WO2022168900A1 true WO2022168900A1 (fr) 2022-08-11

Family

ID=82742349

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2022/004195 WO2022168900A1 (fr) 2021-02-04 2022-02-03 Échangeur de chaleur

Country Status (2)

Country Link
JP (1) JPWO2022168900A1 (fr)
WO (1) WO2022168900A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005517893A (ja) * 2002-02-19 2005-06-16 ダナ カナダ コーポレーション フィン付き低プロファイル熱交換器
JP2020159667A (ja) * 2019-03-28 2020-10-01 昭和電工パッケージング株式会社 熱交換器

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005517893A (ja) * 2002-02-19 2005-06-16 ダナ カナダ コーポレーション フィン付き低プロファイル熱交換器
JP2020159667A (ja) * 2019-03-28 2020-10-01 昭和電工パッケージング株式会社 熱交換器

Also Published As

Publication number Publication date
JPWO2022168900A1 (fr) 2022-08-11

Similar Documents

Publication Publication Date Title
JP7306429B2 (ja) 電池用包装材料、その製造方法、及び電池
WO2020235534A1 (fr) Matériau extérieur pour dispositif de stockage d'énergie, procédé de fabrication associé, dispositif de stockage d'énergie et film de polyamide
JP7325926B2 (ja) 電池用包装材料及び電池
JP2023075950A (ja) 電池用包装材料、その製造方法、電池用包装材料の巻取体、電池
WO2020085462A1 (fr) Matériau de boîtier pour dispositif de stockage d'énergie, son procédé de production et dispositif de stockage d'énergie
WO2020085463A1 (fr) Matériau de conditionnement pour dispositif de stockage d'énergie, son procédé de production et dispositif de stockage d'énergie
WO2020085464A1 (fr) Matériau de conditionnement pour dispositif de stockage d'énergie, son procédé de production et dispositif de stockage d'énergie
JP2020129543A (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
JP7380544B2 (ja) 蓄電デバイス用外装材、その製造方法、及び蓄電デバイス
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
WO2022168900A1 (fr) Échangeur de chaleur
JP7036290B2 (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
WO2022168902A1 (fr) Échangeur de chaleur
WO2021230251A1 (fr) Matériau d'extérieur pour dispositif de stockage d'énergie, son procédé de fabrication et dispositif de stockage d'énergie
JP7192795B2 (ja) 電池用包装材料及び電池
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
WO2020075731A1 (fr) Élément de soupape de batterie, procédé de fabrication dudit élément de soupape de batterie et batterie
WO2021215538A1 (fr) Matériau extérieur pour dispositif de stockage d'énergie, son procédé de fabrication et dispositif de stockage d'énergie
JP7118038B2 (ja) 蓄電デバイス用外装材、蓄電デバイス、及びこれらの製造方法
JP6699130B2 (ja) 電池用包装材料
WO2022114024A1 (fr) Matériau d'emballage externe pour dispositifs de stockage d'énergie, procédé de production de celui-ci, et dispositif de stockage d'énergie
WO2023058453A1 (fr) Matériau d'emballage externe pour dispositifs d'accumulation d'énergie, son procédé de production et dispositif d'accumulation 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
JP7055904B2 (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
JP7435598B2 (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

Legal Events

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

Ref document number: 22749771

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2022579595

Country of ref document: JP

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 22749771

Country of ref document: EP

Kind code of ref document: A1