WO2023127066A1 - 非水電解質電池用リード線、絶縁膜及び非水電解質電池 - Google Patents
非水電解質電池用リード線、絶縁膜及び非水電解質電池 Download PDFInfo
- Publication number
- WO2023127066A1 WO2023127066A1 PCT/JP2021/048711 JP2021048711W WO2023127066A1 WO 2023127066 A1 WO2023127066 A1 WO 2023127066A1 JP 2021048711 W JP2021048711 W JP 2021048711W WO 2023127066 A1 WO2023127066 A1 WO 2023127066A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- insulating layer
- aqueous electrolyte
- electrolyte battery
- layer
- conductor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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
- H01M50/172—Arrangements of electric connectors penetrating the casing
- H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
- H01M50/178—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for pouch or flexible bag cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or electrolyte
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/105—Pouches or flexible bags
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
-
- 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
- H01M50/183—Sealing members
- H01M50/184—Sealing members characterised by their shape or structure
-
- 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
- H01M50/183—Sealing members
- H01M50/19—Sealing members characterised by the material
- H01M50/197—Sealing members characterised by the material having a layered structure
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
- H01M50/536—Electrode connections inside a battery casing characterised by the method of fixing the leads to the electrodes, e.g. by welding
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/547—Terminals characterised by the disposition of the terminals on the cells
- H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/552—Terminals characterised by their shape
- H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present disclosure relates to lead wires for non-aqueous electrolyte batteries, insulating films, and non-aqueous electrolyte batteries.
- a non-aqueous electrolyte battery in which a non-aqueous electrolyte (electrolytic solution), a positive electrode, and a negative electrode are sealed in a bag as an enclosure.
- a non-aqueous electrolyte electrolytic solution
- an electrolytic solution obtained by dissolving a fluorine-containing lithium salt such as LiPF 6 or LiBF 4 in propylene carbonate, ethylene carbonate, dimethyl carbonate, diethyl carbonate, ethyl methyl carbonate, or the like is used.
- the enclosed container is required to have properties that prevent the permeation of electrolyte and gas, and the infiltration of moisture from the outside. For this reason, a laminate film in which a metal layer such as aluminum foil is coated with a resin is used as a material for the enclosure, and the edges of two laminate films are heat-sealed to form the enclosure.
- One end of the enclosed container is an opening, and a non-aqueous electrolyte, a positive electrode plate, a negative electrode plate, a separator, etc. are enclosed inside. Furthermore, lead conductors having one ends connected to the positive electrode plate and the negative electrode plate are arranged so as to extend from the inside of the enclosure to the outside, and finally the opening is heat-sealed (heat-sealed) to open the enclosure. The opening is sealed by bonding the encapsulating container and the lead conductor while closing the part. The portion that is heat-sealed at the end is called a seal portion.
- the portion corresponding to the seal portion of the lead conductor is covered with an insulating film, and a lead wire (tab lead) for a non-aqueous electrolyte battery that includes an insulating film and a lead conductor is called.
- the enclosure and the lead conductor are bonded (heat-sealed) via this insulating film. Therefore, this insulating film is required to have the property of maintaining adhesion between the lead conductor and the enclosure without causing a short circuit between the metal layer of the enclosure and the lead conductor.
- a composite film layer is formed by applying a treatment liquid containing a metal salt and a resin component containing polyacrylic acid and polyacrylic acid amide to the lead conductor.
- a lead wire for a non-aqueous electrolyte battery having an insulator on the outside of the layer has been proposed (see Patent Document 1).
- a lead wire for a non-aqueous electrolyte battery of the present disclosure includes a conductor and an insulating film having a plurality of layers and covering at least a portion of the outer peripheral surface of the conductor, and the insulating film is laminated on the surface of the conductor. a first insulating layer laminated on the outermost surface of the insulating film; and a second insulating layer laminated on the inner surface of the first insulating layer, wherein the conductor covering layer is acid-modified
- the ratio (E1 /E2) is 0.10 or more and 10.00 or less.
- FIG. 1 is a perspective view of a lead wire for a non-aqueous electrolyte battery according to one embodiment of the present disclosure.
- FIG. 2 is a partial cross-sectional view of a lead wire for a non-aqueous electrolyte battery according to one embodiment of the present disclosure.
- FIG. 3 is a perspective view showing an example of a non-aqueous electrolyte battery including lead wires for a non-aqueous electrolyte battery according to an embodiment of the present disclosure.
- 4 is a longitudinal sectional view of the non-aqueous electrolyte battery of FIG. 3.
- An object of the present disclosure is to provide a lead wire for a non-aqueous electrolyte battery that has excellent adhesion to the enclosure of the non-aqueous electrolyte battery at high temperatures.
- a lead wire for a non-aqueous electrolyte battery of the present disclosure includes a conductor and an insulating film having a plurality of layers and covering at least a portion of the outer peripheral surface of the conductor, and the insulating film is laminated on the surface of the conductor. a first insulating layer laminated on the outermost surface of the insulating film; and a second insulating layer laminated on the inner surface of the first insulating layer, wherein the conductor covering layer is acid-modified
- the ratio (E1 /E2) is 0.10 or more and 10.00 or less.
- the insulating film has a conductor coating layer laminated on the surface of the conductor, and the conductor coating layer contains acid-modified polyolefin, so that the adhesion to the conductor is good. is. Further, the ratio of the elastic modulus E1 of the first insulating layer at the same temperature as the second insulating layer to the elastic modulus E2 of the second insulating layer at any one temperature of 80 ° C. or higher and 125 ° C.
- E1/E2 the elastic modulus in the temperature range reached by the high-output battery is the first insulating layer and the second insulating layer laminated on the inner surface of the first insulating layer and the range is close.
- the upper temperature limit for non-aqueous electrolyte batteries is around 60°C. Material destruction such as the insulating film that becomes the problem occurs, and then delamination progresses from the starting point that was formed, and the entire bonded portion is detached, resulting in a situation in which the decomposition gas or electrolyte leaks.
- the lead wire for a non-aqueous electrolyte battery is subjected to a force in a peeling direction against the insulating film at a high temperature equal to or higher than the conventional upper limit temperature, the first insulating layer and the inner surface of the first insulating layer Since the elastic modulus of the second insulating layer is close to that of the second insulating layer laminated on the second insulating layer, the two layers are simultaneously deformed by the peeling force, the force is dispersed, and it is possible to suppress the starting point of peeling.
- the lead wire for a non-aqueous electrolyte battery has excellent adhesion to the enclosure of the non-aqueous electrolyte battery at high temperatures.
- the "elastic modulus” is measured using a nanoindenter. Measurement of elastic modulus with a nanoindenter (nanoindentation method) is performed according to the following procedure. As a nanoindenter, TriboIndenter TI980 manufactured by HYSITRON is used. In the nanoindenter, an equilateral triangular pyramidal indenter (Berkovich indenter) with a diamond tip tip was used. Each adhesive film, which is a measurement sample, is cut in the stacking direction, and the cross section of the insulating film is exposed by Ar ion milling.
- the elastic modulus E2 is 10 MPa or higher and 900 MPa or lower
- the elastic modulus E1 is 10 MPa or higher and 900 MPa or lower.
- the peel strength can be improved, the strength of each layer constituting the insulating film can be made uniform, and stress concentration can be suppressed. It is possible to further suppress cracks and delamination of the insulating film, which is a joint portion with the sealed container of the electrolyte battery.
- the elastic modulus E2 is 20 MPa or more and 500 MPa or less
- the elastic modulus E1 is 20 MPa or more and 500 MPa or less.
- the elastic modulus E2 and the elastic modulus E1 are both 20 MPa or more and 500 MPa or less, it is possible to further improve the effect of suppressing cracks and delamination of the insulating film, which is the joint portion with the enclosure of the non-aqueous electrolyte battery.
- the average thickness T2 of the second insulating layer is 25 ⁇ m or more, and the average thickness T1 of the first insulating layer is 25 ⁇ m or more.
- the strength of the second insulating layer and the first insulating layer can be improved.
- the insulating film is used for the lead wire for the non-aqueous electrolyte battery of the present disclosure.
- the lead wire for a non-aqueous electrolyte battery has excellent adhesiveness to the enclosure of the non-aqueous electrolyte battery at high temperatures.
- the non-aqueous electrolyte battery of the present disclosure includes an enclosure, and a plurality of non-aqueous electrolyte battery lead wires arranged to extend from the inside of the enclosure to the outside, and the enclosure comprises an innermost resin. It is composed of a sheet body in which a layer, a metal layer and an outermost resin layer are laminated in this order, and the innermost resin layer and the first insulating layer are heat-sealed.
- the non-aqueous electrolyte battery includes a plurality of lead wires for the non-aqueous electrolyte battery, and the first insulating layer of the lead wires and the innermost resin layer of the enclosure are heat-sealed to form the lead wires. It has excellent adhesiveness at high temperatures between the adhesive and the enclosed container.
- the elastic modulus E4 of the innermost resin layer at the same temperature as the first insulating layer with respect to the elastic modulus E1 of the first insulating layer at any one temperature of 80° C. or higher and 125° C. or lower ratio (E4/E1) is preferably 0.10 or more and 10.00 or less.
- the elastic moduli of the first insulating layer and the innermost resin layer of the encapsulating container heat-sealed to the first insulating layer at any one temperature between 80° C. and 125° C. are close to each other. Therefore, even if a force is generated in the direction in which the lead wire for a non-aqueous electrolyte battery and the encapsulating container are separated from each other at high temperatures, stress concentration is unlikely to occur, and cracks can be suppressed.
- the adhesive force with the inner resin layer can be improved. Therefore, the non-aqueous electrolyte battery has excellent adhesion between the lead wires and the enclosure at high temperatures.
- the elastic modulus E4 is preferably 10 MPa or more and 900 MPa or less.
- the elastic modulus E4 of the innermost resin layer 27 at any one temperature of 80° C. or higher and 125° C. or lower is the same as the elastic modulus E1 of the first insulating layer at any one temperature of 80° C. or higher and 125° C. or lower.
- the pressure is 10 MPa or more and 900 MPa or less, in the non-aqueous electrolyte battery, even if a force is generated in the direction in which the lead wire and the enclosure are separated at high temperatures, stress concentration is less likely to occur, and the first insulating layer and It is possible to further enhance the effect of suppressing the occurrence of delamination and cracking of the innermost resin layer.
- FIG. 1 is a perspective view of a lead wire for a non-aqueous electrolyte battery according to one embodiment of the present disclosure.
- FIG. 2 is a partial cross-sectional view of a lead wire for a non-aqueous electrolyte battery according to one embodiment of the present disclosure.
- the non-aqueous electrolyte battery lead wire 1 includes a conductor 3 and an insulating film 5 covering at least a portion of the outer peripheral surface of the conductor 3 .
- the insulating film 5 includes a conductor coating layer 6 laminated on the surface of the conductor 3 , a first insulating layer 8 laminated on the outermost surface of the insulating film 5 , and a second insulating layer laminated on the inner surface of the first insulating layer 8 . layer 7; Note that the conductor corresponds to a lead conductor.
- the conductor 3 is connected to an electrode or the like of a non-aqueous electrolyte battery.
- the material of the conductor 3 is not particularly limited as long as it is used as a conductor constituting a lead wire for a non-aqueous electrolyte battery. Examples include aluminum, titanium, nickel, copper, aluminum alloys, titanium alloys, nickel alloys, Examples include metal materials such as copper alloys, and materials obtained by plating these metal materials with nickel, gold, or the like.
- a material for forming the conductor 3 connected to the positive electrode of the non-aqueous electrolyte battery a material that does not dissolve during discharge is preferable, and specifically, aluminum, titanium, an aluminum alloy, and a titanium alloy are preferable.
- nickel, copper, nickel alloy, copper alloy, nickel-plated copper, and gold-plated copper are preferable as the material for forming the conductor 3 connected to the negative electrode.
- the conductor 3 may be surface-treated to prevent corrosion by the electrolyte.
- the lower limit of the average thickness of the conductors 3 is preferably 0.10 mm. When the average thickness of the conductor 3 is 0.10 mm or more, a practically sufficient amount of current can flow as a battery. Further, the lower limit of the average thickness of the conductor 3 may be 0.15 mm or 0.20 mm.
- the upper limit of the average thickness of the conductor 3 is not particularly limited, and can be appropriately set according to, for example, the capacity of the non-aqueous electrolyte battery.
- the upper limit of the average thickness is preferably 5.00 mm. When the average thickness of the conductor 3 is 5.00 mm or less, resistance heat generation in the lead wire portion can be suppressed even if the lead wire is rapidly charged and discharged. Further, the upper limit of the average thickness of the conductor 3 may be 4 mm.
- the "average thickness" of the conductor 3 is the average value of thickness measurements at 10 points. Below, "average thickness" is synonymous.
- the insulating film 5 is used as an insulating film for lead wires for non-aqueous electrolyte batteries.
- the insulating film 5 has a plurality of layers and is laminated on the outer peripheral surface of the conductor 3 so as to cover at least part of the outer peripheral surface of the conductor 3 .
- the lower limit of the average thickness of the insulating film 5 is preferably 0.05 mm. If the average thickness of the insulating film 5 is less than 0.05 mm, it is difficult to fill the gap between the insulating film 5 and the enclosure 11 caused by a step corresponding to the thickness of the conductor 3 with the insulating film 5 . Become.
- the lower limit of the average thickness of the insulating film 5 may be 0.08 mm or 0.10 m.
- the upper limit of the average thickness of the insulating film 5 is preferably 0.30 mm. If the average thickness of the insulating film 5 exceeds 0.30 mm, the amount of moisture that permeates the insulating film 5 from the air and enters the non-aqueous electrolyte battery 10 increases, which may accelerate the deterioration of the non-aqueous electrolyte battery. be.
- the upper limit of the average thickness of the insulating film 5 may be 0.25 mm or 0.22 mm.
- the average thickness of the insulating film 5 is the average value of the measured values of the thickness at 10 points on the outer peripheral surface of the insulating film 5 that has the largest area.
- the insulating film 5 includes a conductor coating layer 6 laminated on the surface of the conductor 3, a first insulating layer 8 laminated on the outermost surface of the insulating film 5, and an inner surface of the first insulating layer 8. and a second insulating layer 7 which is applied to the substrate.
- a conductor coating layer 6 is laminated on the surface of the conductor 3 . Since the insulating film 5 has the conductor covering layer 6 , corrosion of the conductor 3 can be suppressed.
- the conductor coating layer 6 contains acid-modified polyolefin. Since the conductor coating layer 6 contains the acid-modified polyolefin, it has good adhesiveness to the conductor and can sufficiently exhibit its adhesiveness to the second insulating layer 7 .
- the acid used for acid modification is not particularly limited as long as it does not impair the effects of the present invention, but examples include unsaturated carboxylic acids and derivatives thereof.
- unsaturated carboxylic acids include acrylic acid, methacrylic acid, maleic acid, itaconic acid, and fumaric acid.
- unsaturated carboxylic acid derivatives include maleic acid monoester, maleic anhydride, itaconic acid monoester, itaconic anhydride, fumaric acid monoester, and fumaric anhydride.
- unsaturated carboxylic acid derivatives are preferred, and maleic anhydride is more preferred, from the viewpoint of further improving the adhesiveness (compatibility) between the olefinic resin and the liquid crystal polymer.
- acid-modified polypropylene As the acid-modified polyolefin, acid-modified polypropylene is preferable, and maleic anhydride polypropylene is more preferable. Since the acid-modified polyolefin is acid-modified polypropylene, the adhesion between the conductor coating layer 6 and the second insulation layer 7 is further improved when the second insulation layer 7 is made of polypropylene.
- the lower limit of the acid-modified polyolefin content in the conductor coating layer 6 is preferably 70% by mass. If the content of the acid-modified polyolefin is below this lower limit, it may not be possible to obtain practically sufficient material properties. Further, the lower limit of the acid-modified polyolefin content in the conductor coating layer 6 may be 80% by mass, 90% by mass, or 100% by mass.
- the conductor coating layer 6 may contain a thermoplastic resin other than the above-mentioned acid-modified polyolefin, and may contain other known additives as long as the effects of the present disclosure are not impaired.
- known additives include antioxidants, flame retardants, tackifiers, lubricants, fillers, crystallization accelerators, colorants and the like.
- the lower limit of the average thickness T3 of the conductor coating layer 6 is preferably 20 ⁇ m. If the average thickness T3 of the conductor coating layer 6 is less than 20 ⁇ m, there is a possibility that sufficient adhesiveness to the conductor cannot be obtained. Moreover, the lower limit of the average thickness T3 of the conductor coating layer 6 may be 30 ⁇ m or 40 ⁇ m. On the other hand, the upper limit of the average thickness T3 of the conductor coating layer 6 is preferably 150 ⁇ m. If the average thickness T3 of the conductor coating layer 6 exceeds 150 ⁇ m, the amount of moisture that permeates the insulating film 5 from the atmosphere and enters the non-aqueous electrolyte battery 10 increases, possibly accelerating deterioration of the battery.
- the upper limit of the average thickness T3 of the conductor coating layer 6 may be 120 ⁇ m or 100 ⁇ m.
- the average thickness T3 of the conductor coating layer 6 is the average value of the thickness measured at 10 points on the outer peripheral surface of the conductor coating layer 6, which has the largest area.
- the insulating film 5 has a second insulating layer 7 between the first insulating layer 8 and the conductor covering layer 6 .
- the second insulating layer 7 is laminated on the inner surface of the first insulating layer 8 .
- the second insulating layer 7 preferably contains crosslinked polyolefin or polyolefin having a melting point higher than that of the conductor coating layer 6 by 10° C. or more. Since the second insulating layer contains crosslinked polyolefin or a polyolefin resin having a melting point higher than that of the conductor coating layer 6 by 10° C. or more, it is difficult to melt at the heat sealing temperature when the opening of the enclosed container is heat sealed, and the encapsulation A short circuit between the metal layer of the container and the conductor can be suppressed.
- Polyolefins in the crosslinked polyolefin include polypropylene, polyethylene, derivatives thereof, and the like.
- a crosslinked random polypropylene having a melting point of 130° C. or higher and 155° C. or lower and an MFR of 3 g/10 minutes or higher and 15 g/10 minutes or lower is preferable.
- the adhesiveness to the conductor coating layer 6 and the first insulating layer 8 is sufficiently exhibited, and it is difficult to melt at the heat sealing temperature.
- high melting point polyolefin a high melting point polypropylene having a melting point of 155°C or higher is preferable, and homopolypropylene, block polypropylene, and thermoplastic olefin elastomer (TPO) are particularly preferable.
- the lower limit of the content of the crosslinked polyolefin in the second insulating layer 7 is preferably 70% by mass. If the content of the crosslinked polyolefin is less than this lower limit, it may not be possible to obtain practically sufficient material properties. Further, the lower limit of the content of the crosslinked polyolefin in the second insulating layer 7 may be 80% by mass, 90% by mass, or 100% by mass.
- the second insulating layer 7 may contain a thermoplastic resin other than the above crosslinked polyolefin, and may contain other known additives as long as the effects of the present disclosure are not impaired.
- known additives include antioxidants, flame retardants, tackifiers, lubricants, fillers, crystallization accelerators, colorants and the like.
- the lower limit of the average thickness T2 of the second insulating layer 7 is preferably 25 ⁇ m. If the average thickness T2 of the second insulating layer 7 is less than 25 ⁇ m, the strength of the second insulating layer 7 may be insufficient. Further, the lower limit of the average thickness T2 of the second insulating layer 7 may be 30 ⁇ m or 40 ⁇ m. On the other hand, the upper limit of the average thickness T2 of the second insulating layer 7 is preferably 250 ⁇ m. If the average thickness of the second insulating layer 7 exceeds 250 ⁇ m, the amount of moisture that permeates the insulating film 5 from the air and enters the non-aqueous electrolyte battery increases, resulting in deterioration of the battery. may accelerate Here, in the present disclosure, the average thickness T2 of the second insulating layer 7 is the average value of the thickness measured at 10 points on the outer peripheral surface of the second insulating layer 7, which has the largest area. be.
- the first insulating layer 8 is arranged furthest from the conductor 3 and is made of thermoplastic resin.
- the first insulating layer 8 is laminated on the outermost surface of the insulating film 5 and laminated on the surface of the second insulating layer 7 .
- the main component of the first insulating layer 8 is preferably a resin that is easily melted at the heat sealing temperature when the opening of the enclosure is heat-sealed (heat-sealed), more preferably polyolefin as the main component.
- the main component in the present disclosure means a component whose content is 50% by mass or more.
- Polyolefins include polypropylene, polyethylene, derivatives thereof, and the like.
- polypropylene random polypropylene having a melting point of 120° C. or higher and 155° C. or lower and an MFR of 3 g/10 minutes or higher and 15 g/10 minutes or lower is preferable.
- random polypropylene By using random polypropylene as the polyolefin, there is an advantage that the adhesiveness between the second insulating layer 7 and the innermost resin layer of the enclosure can be sufficiently exhibited.
- the lower limit of the polyolefin content in the first insulating layer 8 is preferably 70% by mass. If the content of polyolefin is less than this lower limit, there is a possibility that practically sufficient material properties cannot be obtained. Further, the lower limit of the polyolefin content in the first insulating layer 8 may be 80% by mass, 90% by mass, or 100% by mass.
- the first insulating layer 8 may contain a thermoplastic resin other than the polyolefin as long as it does not impair the effects of the present disclosure. More specifically, the first insulating layer 8 may contain a plurality of resins, and the plurality of resins include homopolypropylene, block polypropylene, random polypropylene, low-crystalline polypropylene, low-density polyethylene, straight Chain low density polyethylene, low crystalline ethylene-propylene copolymer, low crystalline ethylene-butylene copolymer, low crystalline ethylene-octene copolymer, low crystalline propylene-ethylene copolymer, etc. .
- the first insulating layer 8 may contain other known additives as long as they do not impair the effects of the present disclosure.
- known additives include antioxidants, flame retardants, tackifiers, lubricants, fillers, crystallization accelerators, colorants and the like.
- the lower limit of the average thickness T1 of the first insulating layer 8 is preferably 25 ⁇ m. If the average thickness T1 of the first insulating layer 8 is less than 25 ⁇ m, the strength of the first insulating layer 8 may be insufficient. Further, the lower limit of the average thickness T1 of the first insulating layer 8 may be 30 ⁇ m or 40 ⁇ m. On the other hand, the upper limit of the average thickness T1 of the first insulating layer 8 is preferably 250 ⁇ m. When the average thickness T1 of the first insulating layer 8 exceeds 250 ⁇ m, the amount of moisture that permeates the insulating film 5 from the air and enters the non-aqueous electrolyte battery increases. It may accelerate deterioration.
- the average thickness T1 of the first insulating layer 8 is the average value of the measured values of the thickness at 10 points on the outer peripheral surface of the first insulating layer 8, which has the largest area. be.
- the ratio (E1/E2 ) is 0.10 or more and 10.00 or less, preferably 0.67 or more and 1.5 or less.
- the ratio (E1/E2 ) is 0.10 or more and 10.00 or less, so that the temperature between the first insulating layer 8 and the second insulating layer 7 disposed between the conductor coating layer 6 and the first insulating layer 8 is 80 ° C.
- the elastic modulus at any one temperature between 125° C. and below is in a close range.
- the upper limit temperature for non-aqueous electrolyte batteries is around 60° C., but the lead wire 1 for non-aqueous electrolyte batteries is peeled off from the insulating film 5 at a high temperature exceeding the conventional upper limit temperature for use.
- the non-aqueous electrolyte battery lead wire 1 when the non-aqueous electrolyte battery lead wire 1 is housed in a non-aqueous electrolyte battery enclosure and the non-aqueous electrolyte battery lead wire 1 is adhered to the enclosure via the insulating film 5, It is easy to maintain strong adhesion even at high temperatures. Therefore, the non-aqueous electrolyte battery lead wire 1 has excellent adhesiveness to the enclosure of the non-aqueous electrolyte battery at high temperatures.
- the lower limit of the elastic modulus E2 of the second insulating layer 7 at any one temperature between 80°C and 125°C may be 10 MPa or 20 MPa.
- the upper limit of the elastic modulus E2 may be 900 MPa or 500 MPa.
- the elastic modulus E2 is 10 MPa or more and 900 MPa or less, the peel strength can be improved, the strength of each layer constituting the insulating film 5 can be made uniform, and stress concentration can be suppressed. It is possible to further suppress cracks and delamination of the insulating film 5, which is a joint portion with the container.
- the lower limit of the elastic modulus E1 of the first insulating layer 8 at any one temperature between 80°C and 125°C may be 10 MPa or 20 MPa.
- the upper limit of the elastic modulus E1 may be 900 MPa or 500 MPa.
- the elastic modulus E1 is 10 MPa or more and 900 MPa or less, the peel strength can be improved, the strength of each layer constituting the insulating film 5 can be made uniform, and stress concentration can be suppressed. It is possible to further suppress cracks and delamination of the insulating film 5, which is a joint portion with the container.
- the elastic modulus E2 of the second insulating layer 7 at any one temperature of 80° C. or higher and 125° C. or lower and the elastic modulus E1 of the first insulating layer 8 at the same temperature as the second insulating layer are, for example, the elastic modulus It can be adjusted by kneading two or more kinds of resins or inorganic fillers with different values. Specifically, for example, a resin with a high elastic modulus of about 1200 MPa at 80 ° C., such as homopolypropylene, and a resin with a low elastic modulus of about 1 MPa to 20 MPa at 80 ° C., such as low-crystalline polypropylene, are added at an appropriate mass ratio. can be adjusted to the target low elastic modulus. In addition, it is possible to adjust the target high elastic modulus by adding an inorganic filler such as a flame retardant or a filler in an appropriate mass ratio.
- an inorganic filler such as a flame retardant or a filler in an appropriate
- the method for manufacturing the insulating film of the present disclosure is not particularly limited.
- a resin composition for forming each of the conductor coating layer, the second insulating layer, and the first insulating layer containing the resin components and additives is mixed with an open roll, a pressure kneader, a single-shaft mixer, a twin-shaft mixer, or the like. Mix using a mixing device.
- a film-like conductor coating layer, a second insulating layer and a first insulating layer can be produced by extrusion molding such as T-die molding and inflation molding.
- each layer of the conductor covering layer, the second insulating layer and the first insulating layer is superimposed and thermally laminated with a hot roll to bond them together.
- a method for simultaneously forming a plurality of layers an inflation method by co-extrusion or a T-die method can be used.
- an extrusion lamination method can be used in which a molten resin is laminated on a film formed as a single layer.
- the lead wire for the non-aqueous electrolyte battery has excellent adhesion to the enclosure of the non-aqueous electrolyte battery at high temperatures.
- the method for manufacturing the lead wire 1 for non-aqueous electrolyte batteries is not particularly limited, and the lead wire 1 for non-aqueous electrolyte batteries can be produced by a known method.
- the lead wire for a non-aqueous electrolyte battery it has excellent adhesion to the enclosure of the non-aqueous electrolyte battery at high temperatures.
- the non-aqueous electrolyte battery 10 includes the lead wire 1 for a non-aqueous electrolyte battery described above.
- Examples of non-aqueous electrolyte batteries include secondary batteries such as lithium ion batteries.
- FIG. 3 is a perspective view showing an example of a nonaqueous electrolyte battery including the lead wire for a nonaqueous electrolyte battery.
- FIG. 4 is a partial cross-sectional view schematically showing an embodiment of the non-aqueous electrolyte battery.
- a non-aqueous electrolyte battery (secondary battery) 10 shown in FIGS. more specifically, two lead wires 1 for a non-aqueous electrolyte battery.
- the lead wire 1 for non-aqueous electrolyte batteries is the above-described lead wire for non-aqueous electrolyte batteries.
- the insulating film 5 has the conductor coating layer 6, the second insulating layer 7 and the first insulating layer 8, as described above.
- the non-aqueous electrolyte battery 10 has a substantially square enclosure 11 and two non-aqueous electrolyte battery lead wires 1 extending from the inside of the enclosure 11 to the outside.
- the conductor 3 and the enclosing container 11 are connected via the insulating film 5 at the sealing portion 13 of the enclosing container 11 .
- the enclosed container 11 is a container that accommodates a positive electrode, a negative electrode, a separator, and a non-aqueous electrolyte in a sealed state.
- a positive electrode and a negative electrode are laminated via a separator to form a laminated electrode group.
- the laminated electrode group and the non-aqueous electrolyte are housed in an enclosed container 11 in a sealed state.
- the laminated electrode group is immersed in the electrolytic solution.
- the enclosed container 11 is formed from a sheet body as will be described later.
- the sealing portion 13 around the two sheets or one folded sheet is heat-sealed to provide a sealed state.
- one end 4 a of the conductor 3 of the lead wire 1 for non-aqueous electrolyte batteries is exposed from the enclosure 11 , and the other end 4 b is inside the enclosure 11 . It is arranged so as to be connected to the positive electrode.
- the other lead wire 1 for non-aqueous electrolyte batteries is arranged such that one end 4 a of the conductor 3 is exposed from the enclosure 11 and the other end 4 b is connected to the negative electrode in the enclosure 11 .
- the innermost resin layer (that is, the enclosure 11) is not laminated on both ends of the conductor 3, that is, one end 4a and the other end 4b.
- One end 4a of the conductor 3 is exposed from the enclosure 11.
- an internal connection lead wire 14 is connected to the other end portion 4b of the conductor 3 of the positive electrode side non-aqueous electrolyte battery lead wire 1 via a solder portion 15. Do not connect with the positive pole.
- the other end portion 4b of the conductor 3 of the lead wire 1 for the negative electrode side of the non-aqueous electrolyte battery is connected to the internal connection lead wire 14 through the solder portion 15, and the internal connection lead wire 14 , is connected to a negative electrode (not shown).
- the intermediate portions of the lead wires 1 for a non-aqueous electrolyte battery are sandwiched by the sheet body, which is the enclosure 11, with an insulating film 5 interposed therebetween.
- the resin layer 27 and the first insulating layers 8 of the plurality of lead wires 1 for non-aqueous electrolyte batteries are heat-sealed.
- the positive and negative electrodes are typically laminates in which an active material layer containing an active material is laminated on the surface of a current collector such as a metal foil.
- a current collector such as a metal foil.
- the shape of the positive electrode and the negative electrode is usually plate-like, but may be a shape other than the plate-like shape.
- the separator is usually an insulating and porous film. This separator is impregnated with a non-aqueous electrolyte.
- a non-aqueous electrolyte contains a non-aqueous solvent and an electrolyte salt dissolved in this non-aqueous solvent.
- the enclosed container 11, as shown in FIG. 4, is composed of a sheet body in which an innermost resin layer 27, a metal layer 25 and an outermost resin layer 26 are laminated in this order. Then, the sealed container 11 is formed by stacking two sheets and heat-sealing three sides other than the side through which the conductor penetrates to form the sealed portion 13 . At the outer peripheral portion of the enclosure 11 , the metal layers 25 of each sheet are adhered via the innermost resin layer 27 . At the sealing portion 13 , the conductor 3 of each lead wire 1 for non-aqueous electrolyte batteries is adhered to the enclosed container 11 via the insulating film 5 . At this portion, the innermost resin layer 27 of the enclosure 11 and the first insulating layer 8 of each lead wire 1 for non-aqueous electrolyte batteries are heat-sealed.
- the innermost resin layer 27 is directly laminated on the inner surface of the metal layer 25 .
- an insulating resin that does not dissolve in the non-aqueous electrolyte and melts when heated.
- the innermost resin layer 27 for example, polyolefin, acid-modified polyolefin, acid-modified styrene-based elastomer, or the like can be used. Among these materials, polypropylene is preferable for the innermost resin layer 27 .
- the average thickness of the innermost resin layer 27 is preferably about 10 ⁇ m to 500 ⁇ m.
- the metal layer 25 has functions such as improving the strength of the enclosure 11 and preventing water vapor, oxygen, light, etc. from entering the battery.
- the metal layer 25 is made of metal such as aluminum foil.
- the metal layer 25 is mainly composed of metal. Examples of this metal include aluminum, copper, stainless steel, and titanium, with aluminum being particularly preferred.
- the metal layer 25 is substantially made of metal, but may contain additives other than metal.
- the metal layer 25 is in the form of a film, preferably made of metal foil, more preferably made of aluminum alloy foil. Also, the average thickness of the metal layer 25 is preferably about 10 ⁇ m to 50 ⁇ m.
- the outermost resin layer 26 has a function of protecting the outer surface of the metal layer 25 and a function of insulating it.
- the outermost resin layer 26 positioned outside the enclosing container generally contains resin as a main component as an insulating material.
- the resin forming the outermost resin layer 26 include polyethylene terephthalate (PET), polyamide, polyester, polyolefin, epoxy resin, acrylic resin, fluororesin, polyurethane, silicon resin, phenol resin, polyetherimide, polyimide, and the like. and mixtures and copolymers thereof.
- PET polyethylene terephthalate
- the average thickness of the outermost resin layer 26 is preferably about 10 ⁇ m to 50 ⁇ m.
- one end of the lead wire 1 for non-aqueous electrolyte battery that is, one end 4a of the conductor 3 is arranged in a state of being exposed from the enclosure 11, and is sealed by the enclosure 11. It is Specifically, lead wire 1 for non-aqueous electrolyte battery is arranged such that the innermost resin layer of enclosure 11 and insulating film 5 of lead wire 1 for non-aqueous electrolyte battery are in direct contact with each other.
- the innermost resin layer 27 in the sealing portion 13 of the enclosure 11 and the first insulating layer 8 of the lead wire 1 for non-aqueous electrolyte battery It is heat-sealed.
- the positive electrode, the negative electrode, and the separator which are the laminated electrode group immersed in the non-aqueous electrolyte, can be hermetically sealed within the enclosure 11 .
- the elastic modulus E1 of the first insulating layer 8 at any one temperature between 80° C. and 125° C. is the same as that of the first insulating layer 8 of the innermost resin layer 27 of the enclosure 11.
- the ratio (E4/E1) of the elastic modulus E4 at temperature is 0.10 or more and 10.00 or less, preferably 0.25 or more and 4.00 or less.
- the elastic moduli of the first insulating layer and the innermost resin layer of the encapsulating container heat-sealed to the first insulating layer are close to each other at the same temperature in the range of 80° C. or higher and 125° C. or lower. Therefore, even if a force is generated in the direction in which the lead wire for a non-aqueous electrolyte battery and the encapsulating container are separated from each other at a high temperature, the first insulating layer 8 and the innermost resin layer 27 are simultaneously deformed to disperse the force. , can be suppressed from becoming a starting point of peeling. Therefore, the non-aqueous electrolyte battery 10 has excellent adhesion between the non-aqueous electrolyte battery lead wire 1 and the enclosure 11 at high temperatures.
- the lower limit of the elastic modulus E4 of the innermost resin layer 27 at any one temperature between 80°C and 125°C may be 10 MPa or 20 MPa.
- the upper limit of the elastic modulus E4 may be 900 MPa or 500 MPa.
- the elastic modulus E4 of the innermost resin layer 27 at any one temperature of 80° C. or higher and 125° C. or lower is the same as the elastic modulus E1 of the first insulating layer at any one temperature of 80° C. or higher and 125° C. or lower.
- the non-aqueous electrolyte battery 10 can prevent the first insulating layer even if a force is generated in the direction in which the non-aqueous electrolyte battery lead wire 1 and the enclosure 11 are peeled off at a high temperature. 8 and the innermost resin layer 27 are deformed at the same time, the force is dispersed, and the effect of suppressing separation can be further enhanced.
- a method for manufacturing a non-aqueous electrolyte battery according to an embodiment of the present disclosure can be appropriately selected from known methods.
- the method for manufacturing the non-aqueous electrolyte battery includes, for example, a step of preparing a lead wire for the non-aqueous electrolyte battery, a step of preparing a laminated electrode group, a step of preparing a non-aqueous electrolyte, and a step of preparing the non-aqueous electrolyte battery A step of housing the laminated electrode group to which the lead wires are connected and the non-aqueous electrolyte in an enclosure.
- the adhesion between the non-aqueous electrolyte battery lead wire 1 and the enclosure 11 is excellent.
- the lead wire for a non-aqueous electrolyte battery has a three-layer insulating film having a conductor coating layer, a second insulating layer and a first insulating layer, but the lead wire for a non-aqueous electrolyte battery
- a multi-layer insulating film having one or more intermediate layers inside the second insulating layer may be provided.
- Conductor coating layer (PP0) Acid-modified random polypropylene: “ADMER QE060” manufactured by Mitsui Chemicals, Inc. (MFR 7 g/10 min, melting point 140°C) 2. Second insulating layer (PP21) Block polypropylene: “Novatec BC3AV” manufactured by Japan Polypropylene Corporation (melting point 165°C, MFR 10g/10 minutes) (PP22) Block polypropylene: 80 parts by mass of "Novatec BC3AV” (MFR 10 g/10 min, melting point 165 ° C.) manufactured by Japan Polypropylene Co., Ltd., and ethylene-propylene copolymer: "Tafmer P0280" manufactured by Mitsui Chemicals, Inc.
- Block polypropylene A product obtained by kneading 85 parts by mass of "Novatec BC3AV” manufactured by Japan Polypropylene Co., Ltd. and 15 parts by mass of ethylene-propylene copolymer: "Tafmer P0280" manufactured by Mitsui Chemicals (melting point 50 ° C. or less, MFR 6 g / 10 minutes) ( PP24)
- Block polypropylene A product obtained by kneading 60 parts by mass of "Novatec BC3AV” manufactured by Japan Polypropylene Co., Ltd.
- Block polypropylene A product obtained by kneading 90 parts by mass of "Novatec BC3AV” manufactured by Japan Polypropylene Co., Ltd. and 10 parts by mass of ethylene-propylene copolymer: "Tafmer P0280” manufactured by Mitsui Chemicals (melting point 50 ° C.
- Homopolypropylene "HomoMA3H” manufactured by Japan Polypropylene Corporation (MFR 10g/10min, melting point 165°C) (PP27)
- Homo polypropylene 100 parts by mass of "Homo MA3H” manufactured by Nippon Polypro Co., Ltd. and 5 parts by mass of Simgon talc manufactured by Nippon Talc Co., Ltd. (average particle size 8 ⁇ m, specific surface area 13 m 2 /g) kneaded (PP28)
- Block polypropylene 40 parts by mass of "Novatec BC3AV” manufactured by Nippon Polypropylene Co., Ltd.
- ethylene-propylene copolymer "Tafmer P0280” manufactured by Mitsui Chemicals, Inc. (melting point 50°C or less, MFR 6 g/10 minutes) 3 .
- Random polypropylene A mixture of 80 parts by mass of “Prime Polypro F227D” manufactured by Prime Polypro Co., Ltd. and 20 parts by mass of ethylene-propylene copolymer: “Tafmer P0280” manufactured by Mitsui Chemicals, Inc. (melting point: 50° C. or less, MFR: 6 g/10 min).
- PP13 Random polypropylene: A mixture of 60 parts by mass of "Prime Polypro F227D” manufactured by Prime Polypro Co., Ltd. and 40 parts by mass of ethylene-propylene copolymer: "Tafmer P0280” manufactured by Mitsui Chemicals, Inc. (melting point 50°C or less, MFR 6 g/10 minutes).
- Random polypropylene A mixture of 90 parts by mass of "Prime Polypro F227D” manufactured by Prime Polypro Co., Ltd. and 10 parts by mass of ethylene-propylene copolymer: "Tafmer P0280” manufactured by Mitsui Chemicals, Inc. (melting point: 50°C or less, MFR: 6 g/10 minutes).
- Random polypropylene "Prime Polypro F227D” manufactured by Prime Polypro (MFR 7 g/10 min, melting point 140°C)
- Random polypropylene "SunAllomer PF621S” manufactured by SunAllomer (MFR 6 g/10 minutes, melting point 150°C)
- Random polypropylene 100 parts by mass of "SunAllomer PF621S” manufactured by SunAllomer Co., Ltd. and 5 parts by mass of Simgon talc manufactured by Nippon Talc Co., Ltd.
- the layer resin composition is put into a third extruder, and the first insulation layer resin composition is put into the third extruder, and co-extruded to form a conductor coating layer resin composition/second insulation layer resin composition/first insulation layer resin.
- a three-layer insulating film laminated in the order of composition was obtained. At this time, the average thickness of each layer was 50 ⁇ m for the conductor covering layer, 50 ⁇ m for the second insulating layer, and 50 ⁇ m for the first insulating layer.
- the distance between chucks is set to 20 mm, and using a filed flat metal chuck jig, the lower chuck holds the conductive plate portion and the upper chuck holds the aluminum packaging material portion, and the upper chuck is peeled off at 180°. was operated, a peel test was performed at a peel speed of 50 mm/min, and the peel strength [N/cm] was measured.
- the peel strength value [N/cm] in the 180° peel test shown in Tables 1 to 3 is the value obtained by dividing the maximum test force obtained by the test by the width of the test piece.
- a 180° peel test was performed at a peel rate of 50 mm/min in the range of 80° C. to 125° C. shown in Tables 1 to 3, and the peel strength was recorded. The results are shown in Tables 1-3.
- the conductor coating layer of the insulating film contains acid-modified polyolefin, and the elastic modulus E2 of the second insulating layer at any one temperature of 80 ° C. or higher and 125 ° C. or lower.
- the ratio (E1/E2) of the elastic modulus E1 at the same temperature as the second insulating layer of No. 2 is 0.10 or more and 10.00 or less. 2 to No. 4 and no. 6 to No. No. 23 had good peel strength at a temperature of 80° C. or higher and 125° C. or lower.
- the ratio of the elastic modulus E1 of the first insulating layer at the same temperature as the second insulating layer to the elastic modulus E2 of the second insulating layer at any one temperature of 80 ° C. or higher and 125 ° C. or lower (E1/E2) is 0.25 or more and 4.00 or less.
- 6 to No. 9, No. 11 to No. 17 and No. 19 to No. No. 23 was particularly excellent in peel strength at temperatures in the range of 80° C. or higher and 125° C. or lower.
- no. 25 and no. 27 to No. No. 29 lead wires for non-aqueous electrolyte batteries showed low values of peel strength at temperatures in the range of 80° C. or higher and 125° C. or lower.
- No. 26 had good peel strength at 60.degree. 27 and no. In No. 28, when evaluated at 80° C. or 120° C., the ratio (E1/E2) of the elastic modulus E1 decreased and the peel strength also decreased.
- Nonaqueous Electrolyte Battery Lead Wire 3 Conductor 4a One End 4b Other End 5 Insulating Film 6 Conductor Coating Layer 7 Second Insulating Layer 8 First Insulating Layer 10 Nonaqueous Electrolyte Battery 11 Enclosed Container 13 Sealing Part 14 Internal Connection Lead wire 15 solder part 25 metal layer 26 outermost resin layer 27 innermost resin layer
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Laminated Bodies (AREA)
Abstract
Description
近年、電気自動車の充電時間の短縮や航続距離の伸長といった要求課題に対して、車載用の非水電解質電池には、短時間で大電流を充放電可能な急速充放電特性が求められている。このような非水電解質電池の急速充放電化に伴い、非水電解質電池の使用環境がより高温となる。そのため、非水電解質電池を構成する材料には従来以上の耐熱性が要求されており、高温下におけるリード線と非水電解質電池の封入容器との接着性の向上が課題となっている。
本開示によれば、非水電解質電池の封入容器との高温下における接着性に優れる非水電解質電池用リード線を提供できる。
最初に本開示の実施形態を列挙して説明する。
(1)押込時間:3秒
(2)保持時間:0秒
(3)除荷時間:0秒
(4)荷重負荷速度:8mN/秒
(5)押し込み荷重:0.5mN~5mN(圧痕サイズが10μm~20μm程度になるように適宜調整する。)
(6)押し込み深さ到達時間:5秒
(7)荷重保持時間:0秒
(8)押し込み深さ除荷時間:5秒
以下、本開示に係る非水電解質電池用リード線及び非水電解質電池について詳説する。
図1は、本開示の一実施形態に係る非水電解質電池用リード線の斜視図である。図2は、本開示の一実施形態に係る非水電解質電池用リード線の部分断面図である。図1及び図2に示すように、当該非水電解質電池用リード線1は、導体3と、上記導体3の外周面の少なくとも一部を被覆する絶縁膜5とを備える。絶縁膜5は、導体3の表面に積層される導体被覆層6と、絶縁膜5の最表面に積層される第1絶縁層8と、第1絶縁層8の内面に積層される第2絶縁層7とを有する。なお、導体は、リード導体に相当する。
導体3は、非水電解質電池の電極等に接続されるものである。この導体3の材料としては、非水電解質電池用のリード線を構成する導体として用いられるものであれば特に制限されず、例えばアルミニウム、チタン、ニッケル、銅、アルミニウム合金、チタン合金、ニッケル合金、銅合金等の金属材料や、これら金属材料をニッケル、金等でメッキした材料などが挙げられる。非水電解質電池の正極に接続される導体3の形成材料としては、放電時に溶解しないものが好ましく、具体的にはアルミニウム、チタン、アルミニウム合金及びチタン合金が好ましい。一方、負極に接続される導体3の形成材料としては、ニッケル、銅、ニッケル合金、銅合金、ニッケルメッキ銅及び金メッキ銅が好ましい。また、導体3は電解質による腐食を防止するための表面処理が施されていてもよい。
絶縁膜5は、非水電解質電池用リード線の絶縁膜として用いられる。絶縁膜5は、複数の層を有し、導体3の外周面の少なくとも一部を被覆するように導体3の外周面に積層されている。絶縁膜5の平均厚さの下限としては、0.05mmが好ましい。絶縁膜5の平均厚さが0.05mmに満たない場合、導体3の厚さ分の段差で生じる絶縁膜5と封入容器11の間の空隙を、絶縁膜5で充填して埋めることが難しくなる。また、絶縁膜5の平均厚さの下限としては、さらに0.08mmであってもよく、0.10mであってもよい。一方、絶縁膜5の平均厚さの上限としては、0.30mmが好ましい。絶縁膜5の平均厚さが0.30mmを超える場合、大気中から絶縁膜5を透過して非水電解質電池10の内部へ侵入する水分量が増え、非水電解質電池の劣化を早めるおそれがある。また、絶縁膜5の平均厚さの上限としては、さらに0.25mmであってもよく、0.22mmであってもよい。ここで、本開示において、絶縁膜5の平均厚さは、絶縁膜5の外周面のなかで、最も面積が大きい面上の10点における厚さの測定値の平均値である。
導体被覆層6は、導体3の表面に積層される。上記絶縁膜5は、導体被覆層6を有することで、導体3の腐食を抑制できる。
絶縁膜5は、第1絶縁層8と導体被覆層6との間に第2絶縁層7を有する。第2絶縁層7は、第1絶縁層8の内面に積層されている。第2絶縁層7は、架橋ポリオレフィン、または導体被覆層6よりも10℃以上高融点のポリオレフィンを含むことが好ましい。上記第2絶縁層が、架橋ポリオレフィン、または導体被覆層6よりも10℃以上高融点のポリオレフィン樹脂を含むことで、封入容器の開口部をヒートシールする際にヒートシール温度では溶融され難く、封入容器の金属層と導体との短絡を抑制できる。
第1絶縁層8は導体3から最も離れて配置され、かつ熱可塑性樹脂によって形成される。第1絶縁層8は、絶縁膜5の最表面に積層され、第2絶縁層7の表面に積層されている。第1絶縁層8は、封入容器の開口部をヒートシール(熱融着)する際にヒートシール温度では溶融され易い樹脂を主成分とすることが好ましく、ポリオレフィンを主成分とすることがより好ましい。ここで、本開示において主成分とは、含有量が50質量%以上である成分を意味する。
本開示の絶縁膜の製造方法は、特に限定されない。例えば、導体被覆層、第2絶縁層及び第1絶縁層のそれぞれの樹脂成分及び添加剤を含む形成用樹脂組成物をオープンロール、加圧ニーダー、単軸混合機、2軸混合機等の既知の混合装置を用いて混合する。次に、各絶縁層を作製する場合は、Tダイ成形、インフレーション成形等の押出成形をすることによってフィルム状の導体被覆層、第2絶縁層及び第1絶縁層を作製することができる。そして、導体被覆層、第2絶縁層及び第1絶縁層の各層を重ね合わせ、熱ロールで熱ラミネートして貼り合せることにより作成する。また、複数の層を同時に形成する方法としては、共押出によるインフレーション法やTダイ法を用いることができる。さらに、単層で成膜したフィルムの上に溶融樹脂を積層する押出ラミネート法を用いることができる。
当該非水電解質電池用リード線1の製造方法は、特に限定されず、当該非水電解質電池用リード線1は、公知の方法によって製造され得る。
当該非水電解質電池10は、上述した当該非水電解質電池用リード線1を備える。非水電解質電池としては、例えばリチウムイオン電池等の二次電池が挙げられる。
本開示の一実施形態に係る非水電解質電池の製造方法は、公知の方法から適宜選択できる。当該非水電解質電池の製造方法は、例えば、当該非水電解質電池用リード線を準備する工程と、積層電極群を準備する工程と、非水電解質を準備する工程と、当該非水電解質電池用リード線が接続された積層電極群及び非水電解質を封入容器に収容する工程とを備える。
今回開示された実施の形態は全ての点で例示であって制限的なものではないと考えられるべきである。本開示の範囲は、上記実施形態の構成に限定されるものではなく、特許請求の範囲によって示され、請求の範囲と均等の意味及び範囲内での全ての変更が含まれることが意図される。
[導体]
アルミニウム板(平均厚さ:0.40mm)
1.導体被覆層
(PP0)
酸変性ランダムポリプロピレン:三井化学社製「アドマーQE060」(MFR7g/10分、融点140℃)
2.第2絶縁層
(PP21)
ブロックポリプロピレン:日本ポリプロ社製「ノバテックBC3AV」(融点165℃、MFR10g/10分)
(PP22)
ブロックポリプロピレン:日本ポリプロ社製「ノバテックBC3AV」(MFR10g/10分、融点165℃)80質量部と、エチレンプロピレン共重合体:三井化学社製「タフマーP0280」(融点50℃以下、MFR6g/10分)20重量部とを混練したもの
(PP23)
ブロックポリプロピレン:日本ポリプロ社製「ノバテックBC3AV」85質量部と、エチレンプロピレン共重合体:三井化学社製「タフマーP0280」(融点50℃以下、MFR6g/10分)15質量部とを混練したもの
(PP24)
ブロックポリプロピレン:日本ポリプロ社製「ノバテックBC3AV」60質量部と、エチレンプロピレン共重合体:三井化学社製「タフマーP0280」(融点50℃以下、MFR6g/10分)40質量部とを混練したもの
(PP25)
ブロックポリプロピレン:日本ポリプロ社製「ノバテックBC3AV」90質量部と、エチレンプロピレン共重合体:三井化学社製「タフマーP0280」(融点50℃以下、MFR6g/10分)10質量部とを混練したもの
(PP26)
ホモポリプロピレン:日本ポリプロ社製「ホモMA3H」(MFR10g/10分、融点165℃)
(PP27)
ホモポリプロピレン:日本ポリプロ社製「ホモMA3H」100質量部と、日本タルク社製シムゴンタルク(平均粒径8μm、比表面積13m2/g)5質量部とを混練したもの
(PP28)
ブロックポリプロピレン:日本ポリプロ社製「ノバテックBC3AV」40質量部と、エチレンプロピレン共重合体:三井化学社製「タフマーP0280」(融点50℃以下、MFR6g/10分)60質量部とを混練したもの
3.第1絶縁層
(PP11)
ランダムポリプロピレン:プライムポリプロ社製「プライムポリプロF227D」70質量部と、エチレンプロピレン共重合体:三井化学社製「タフマーP0280」(融点50℃以下、MFR6g/10分)30質量部とを混練したもの
(PP12)
ランダムポリプロピレン:プライムポリプロ社製「プライムポリプロF227D」80質量部と、エチレンプロピレン共重合体:三井化学社製「タフマーP0280」(融点50℃以下、MFR6g/10分)20質量部とを混練したもの
(PP13)
ランダムポリプロピレン:プライムポリプロ社製「プライムポリプロF227D」60質量部と、エチレンプロピレン共重合体:三井化学社製「タフマーP0280」(融点50℃以下、MFR6g/10分)40質量部とを混練したもの
(PP14)
ランダムポリプロピレン:プライムポリプロ社製「プライムポリプロF227D」90質量部と、エチレンプロピレン共重合体:三井化学社製「タフマーP0280」(融点50℃以下、MFR6g/10分)10質量部とを混練したもの
(PP15)
ランダムポリプロピレン:プライムポリプロ社製「プライムポリプロF227D」(MFR7g/10分、融点140℃)
(PP16)
ランダムポリプロピレン:サンアロマー社製「サンアロマーPF621S」(MFR6g/10分、融点150℃)
(PP17)
ランダムポリプロピレン:サンアロマー社製「サンアロマーPF621S」100質量部と、日本タルク社製シムゴンタルク(平均粒径8μm、比表面積13m2/g)5質量部とを混練したもの
(PP18)
軟質ポリプロピレン樹脂:日本ポリプロ社製「ウェルネックスRFX4V」(融点140℃,MFR6g/10分)
下記の組成を有するDNP社製のアルミ包材「EL408PH(3)」を用いた。
1.最内樹脂層
(PP4)
酸変性ランダムポリプロピレン、三井化学社製アドマーQE060(MFR7g/10分、融点140℃)
2.金属層
アルミニウム層(平均厚さ:40μm)
3.最外樹脂層
脂肪族ポリアミド(ナイロン6,6:登録商標)
(絶縁膜の作製)
導体被覆層、第2絶縁層及び第1絶縁層の樹脂組成物の材料として表1~表3に記載の樹脂を用い、混合装置により表1~表3に記載する組成の導体被覆層、第2絶縁層及び第1絶縁層のそれぞれの樹脂組成物を作製した。単軸押出機3台を備えるコートハンガー式の三種三層Tダイ成膜機を用いて、1台目の押出機に上記導体被覆層樹脂組成物を、2台目の押出機に第2絶縁層樹脂組成物を、3第目の押出機に第1絶縁層樹脂組成物をそれぞれ投入し、共押出しすることで導体被覆層樹脂組成物/第2絶縁層樹脂組成物/第1絶縁層樹脂組成物の順で積層された3層の絶縁膜を得た。この時、各層の平均厚さはそれぞれ、導体被覆層が50μm、第2絶縁層が50μm、第1絶縁層が50μmであった。
次に、得られた3層の絶縁膜を、所定のサイズに切断し、導体の両面に金型温度220℃、面圧0.3MPaの条件でヒートシールを行った。そして、No.1の非水電解質電池用リード線を得た。
厚さ40μmのアルミニウム箔の一方の面に、厚さ15μmの脂肪族ポリアミド製のシート2枚をドライラミネーションで積層して貼り合わせ、他方の面に、厚さ80μmのPP4樹脂シートを熱ラミネーションで貼り付けラミネートフィルムを得た。得られたラミネートフィルムを、上記の脂肪族ポリアミド製の樹脂シートが最外樹脂層となるように用いて、一辺が開口部となるように周囲がシールされた封入容器を作製した。
以上のようにして得られたリード線及び封入容器を用いて、リード線を貫通させたシール部を、200℃、面圧2.0MPa、3秒の条件で熱融着して、非水電解質電池を作製した。
導体被覆層、第2絶縁層及び第1絶縁層のそれぞれの樹脂組成物、並びに各絶縁層の平均厚さを表1~表3に示す通りとした以外は、No.1と同様にして、非水電解質電池を得た。
(弾性率の測定)
得られたNo.2~No.4、No.6~No.23、No.25、No.27~No.29の非水電解質電池用リード線の第2絶縁層、第1絶縁層及び封入容器の最内樹脂層について、ナノインデンターを用い、80℃以上125℃以下の温度範囲における弾性率を上述の方法により測定した。結果を表1~表3に示す。
また、No.1、No.5、No.24及びNo.26については、参考例として60℃における弾性率を上述の方法により測定した。
絶縁膜と封入容器であるラミネートフィルムとの剥離強度は、以下の手順で測定した。
引張試験機としてミネベアミツミ社製「TGI-2kN」を、ロードセルとして容量1kNのものを、高温環境としては恒温槽オプション「THB-B」を使用し、サンプル投入後恒温槽が目的の温度に安定してから3分経過後に剥離試験を行った。チャック間を20mmとし、ヤスリ目のついた金属製平板チャック治具を用いて、下側チャックでは導体板部を、上側チャックではアルミ包材部を把持し、180°剥離になるように上側チャックを動作させ、剥離速度50mm/分で剥離試験を行い、剥離強度[N/cm]を測定した。なお、表1~表3に記載した180°剥離試験における剥離強度の値[N/cm]は、試験によって得られた最大試験力を試験片の幅で割った値である。
測定温度は、表1~表3に示す測定温度80℃以上125℃以下の範囲で剥離速度50mm/分の条件下で180°剥離試験を行い、剥離強度を記録した。結果を表1~表3に示す。
上記測定した80℃以上125℃以下の剥離強度結果に基づいて、総合判定を行った。総合判定はA、B及びCの3段階で評価した。総合判定の評価基準は以下の通りとした。評価がA又はBであれば合格とする。
A:60以上である。
B:40以上60未満である。
C:40未満である。
一方、上記弾性率E1の比率(E1/E2)が0.25未満又は4.00超であるNo.25及びNo.27~No.29の非水電解質電池用リード線は、80℃以上125℃以下の範囲の温度における剥離強度が低い値となった。また、No.26は、60℃での剥離強度が良好であったにもかかわらず、同じ組成の絶縁膜及び封入容器を備えているNo.27及びNo.28は、80℃又は120℃で評価した場合に、弾性率E1の比率(E1/E2)が低下するとともに、剥離強度も低下した。
3 導体
4a 一端部
4b 他端部
5 絶縁膜
6 導体被覆層
7 第2絶縁層
8 第1絶縁層
10 非水電解質電池
11 封入容器
13 シール部
14 内部接続用リード線
15 ハンダ部
25 金属層
26 最外樹脂層
27 最内樹脂層
Claims (9)
- 導体と、
複数の層を有し、上記導体の外周面の少なくとも一部を被覆する絶縁膜と
を備え、
上記絶縁膜が上記導体の表面に積層される導体被覆層と、上記絶縁膜の最表面に積層される第1絶縁層と、上記第1絶縁層の内面に積層される第2絶縁層とを有し、
上記導体被覆層が酸変性ポリオレフィンを含み、
上記第2絶縁層の80℃以上125℃以下のいずれか1点の温度における弾性率E2に対する上記第1絶縁層の上記第2絶縁層と同じ温度における弾性率E1の比率(E1/E2)が0.10以上10.00以下である非水電解質電池用リード線。 - 上記弾性率E2が10MPa以上900MPa以下であり、
上記弾性率E1が10MPa以上900MPa以下である請求項1に記載の非水電解質電池用リード線。 - 上記第2絶縁層の80℃以上125℃以下のいずれか1点の温度における弾性率E2に対する上記第1絶縁層の上記第2絶縁層と同じ温度における弾性率E1の比率(E1/E2)が0.25以上4.00以下である請求項1に記載の非水電解質電池用リード線。
- 上記弾性率E2が20MPa以上500MPa以下であり、
上記弾性率E1が20MPa以上500MPa以下である請求項3に記載の非水電解質電池用リード線。 - 上記第2絶縁層の平均厚さT2が25μm以上であり、
上記第1絶縁層の平均厚さT1が25μm以上である請求項1から請求項4のいずれか1項に記載の非水電解質電池用リード線。 - 請求項1から請求項5のいずれか1項に記載の非水電解質電池用リード線に用いる絶縁膜。
- 封入容器と、
上記封入容器の内部から外部へ延びるように配置される請求項1から請求項5のいずれか1項に記載の複数の非水電解質電池用リード線と
を備え、
上記封入容器が最内樹脂層、金属層及び最外樹脂層をこの順に積層されたシート体から構成されており、
上記最内樹脂層と上記第1絶縁層とが熱融着されている非水電解質電池。 - 上記第1絶縁層の80℃以上125℃以下のいずれか1点の温度における弾性率E1に対する上記最内樹脂層の上記第1絶縁層と同じ温度における弾性率E4の比率(E4/E1)が0.10以上10.00以下である請求項7に記載の非水電解質電池。
- 上記弾性率E4が10MPa以上900MPa以下である請求項8に記載の非水電解質電池。
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020227033109A KR20240122607A (ko) | 2021-12-27 | 2021-12-27 | 비수 전해질 전지용 리드선, 절연막 및 비수 전해질 전지 |
| CN202180025306.0A CN116670899A (zh) | 2021-12-27 | 2021-12-27 | 非水电解质电池用引线、绝缘膜以及非水电解质电池 |
| US17/913,319 US11973197B2 (en) | 2021-12-27 | 2021-12-27 | Lead wire for nonaqueous electrolyte battery, insulating film and nonaqueous electrolyte battery |
| PCT/JP2021/048711 WO2023127066A1 (ja) | 2021-12-27 | 2021-12-27 | 非水電解質電池用リード線、絶縁膜及び非水電解質電池 |
| JP2022534814A JP7120502B1 (ja) | 2021-12-27 | 2021-12-27 | 非水電解質電池用リード線、絶縁膜及び非水電解質電池 |
| JP2022124948A JP7768068B2 (ja) | 2021-12-27 | 2022-08-04 | 非水電解質電池用リード線、絶縁膜及び非水電解質電池 |
| US18/443,750 US20240186662A1 (en) | 2021-12-27 | 2024-02-16 | Lead wire for nonaqueous electrolyte battery, insulating film and nonaqueous electrolyte battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2021/048711 WO2023127066A1 (ja) | 2021-12-27 | 2021-12-27 | 非水電解質電池用リード線、絶縁膜及び非水電解質電池 |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US17/913,319 A-371-Of-International US11973197B2 (en) | 2021-12-27 | 2021-12-27 | Lead wire for nonaqueous electrolyte battery, insulating film and nonaqueous electrolyte battery |
| US18/443,750 Continuation-In-Part US20240186662A1 (en) | 2021-12-27 | 2024-02-16 | Lead wire for nonaqueous electrolyte battery, insulating film and nonaqueous electrolyte battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023127066A1 true WO2023127066A1 (ja) | 2023-07-06 |
Family
ID=82850923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2021/048711 Ceased WO2023127066A1 (ja) | 2021-12-27 | 2021-12-27 | 非水電解質電池用リード線、絶縁膜及び非水電解質電池 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US11973197B2 (ja) |
| JP (2) | JP7120502B1 (ja) |
| KR (1) | KR20240122607A (ja) |
| CN (1) | CN116670899A (ja) |
| WO (1) | WO2023127066A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2025084379A1 (ja) * | 2023-10-17 | 2025-04-24 | 大日本印刷株式会社 | 金属端子用接着性フィルム及びその製造方法、金属端子用接着性フィルム付き金属端子、蓄電デバイス用外装材、蓄電デバイス用外装材と金属端子用接着性フィルムを備えるキット、並びに、蓄電デバイス及びその製造方法 |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116670899A (zh) | 2021-12-27 | 2023-08-29 | 住友电气工业株式会社 | 非水电解质电池用引线、绝缘膜以及非水电解质电池 |
| JPWO2023153301A1 (ja) * | 2022-02-08 | 2023-08-17 | ||
| EP4614692A1 (en) * | 2022-12-20 | 2025-09-10 | LG Energy Solution, Ltd. | Pouch-type secondary battery |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000067846A (ja) * | 1998-08-20 | 2000-03-03 | Dainippon Printing Co Ltd | 安全弁付き電池ケース |
| JP2012104503A (ja) * | 2012-01-24 | 2012-05-31 | Sumitomo Electric Ind Ltd | 電気部品、非水電解質電池、並びに、それらに用いられる絶縁被覆層つきリード導体及び封入容器 |
| JP2017073200A (ja) * | 2015-10-05 | 2017-04-13 | 住友電気工業株式会社 | リード部材 |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4736189B2 (ja) | 2001-01-18 | 2011-07-27 | 大日本印刷株式会社 | リチウムイオン電池用包装材料 |
| JP4784236B2 (ja) | 2004-09-30 | 2011-10-05 | 住友電気工業株式会社 | 非水電解質電池用リード線及び非水電解質電池 |
| CN101032043B (zh) | 2004-09-30 | 2011-06-08 | 住友电气工业株式会社 | 非水电解质电池用引线和非水电解质电池 |
| JP5108228B2 (ja) * | 2006-01-10 | 2012-12-26 | 住友電気工業株式会社 | 電気部品、非水電解質電池、並びに、それらに用いられる絶縁被覆層つきリード導体及び封入容器 |
| JP5457040B2 (ja) * | 2009-01-13 | 2014-04-02 | 昭和電工パッケージング株式会社 | 電気化学デバイスおよびその製造方法 |
| JP5934646B2 (ja) | 2010-08-11 | 2016-06-15 | 大倉工業株式会社 | 端子接着用テープの製造方法、および端子接着用テープ |
| JP5604226B2 (ja) | 2010-08-25 | 2014-10-08 | 株式会社ブリヂストン | タイヤ |
| JP5966549B2 (ja) | 2012-04-13 | 2016-08-10 | 凸版印刷株式会社 | リチウムイオン電池用外装材 |
| JP6281176B2 (ja) * | 2013-01-07 | 2018-02-21 | 凸版印刷株式会社 | 電極端子およびその製造方法ならびに電池パック |
| JP2014225378A (ja) * | 2013-05-16 | 2014-12-04 | 株式会社日立製作所 | タブリード用シール材、タブリードおよびリチウムイオン二次電池 |
| JP2014026980A (ja) | 2013-09-17 | 2014-02-06 | Showa Denko Packaging Co Ltd | 電気化学デバイス |
| JP6349986B2 (ja) | 2014-06-09 | 2018-07-04 | 凸版印刷株式会社 | 蓄電デバイス用端子フィルム及び蓄電デバイス |
| JP6648400B2 (ja) | 2014-11-10 | 2020-02-14 | 凸版印刷株式会社 | 端子用樹脂フィルム、それを用いたタブ及び蓄電デバイス |
| KR20160060526A (ko) * | 2014-11-20 | 2016-05-30 | 주식회사 폴 | 이차전지의 리드탭용 실부재 |
| JP6705322B2 (ja) * | 2016-07-21 | 2020-06-03 | 住友電気工業株式会社 | 電気部品用リード線及び電気部品 |
| CN112335104B (zh) | 2018-06-20 | 2024-01-19 | 大日本印刷株式会社 | 金属端子用粘接性膜、带粘接性膜的金属端子和电池 |
| KR20250071284A (ko) * | 2019-11-08 | 2025-05-21 | 다이니폰 인사츠 가부시키가이샤 | 금속 단자용 접착성 필름, 금속 단자용 접착성 필름의 제조 방법, 금속 단자용 접착성 필름 부착 금속 단자, 상기 금속 단자용 접착성 필름을 사용한 축전 디바이스, 및 축전 디바이스의 제조 방법 |
| JP7066227B2 (ja) | 2019-11-22 | 2022-05-13 | 株式会社ケムソル | 封止フィルム並びにそれを用いたタブリード及び二次電池 |
| WO2021100213A1 (ja) | 2019-11-22 | 2021-05-27 | 株式会社ケムソル | 封止フィルム並びにそれを用いたタブリード及び二次電池 |
| JP7233457B2 (ja) | 2021-01-25 | 2023-03-06 | 藤森工業株式会社 | 非水系電池外装用積層体 |
| CN116670899A (zh) | 2021-12-27 | 2023-08-29 | 住友电气工业株式会社 | 非水电解质电池用引线、绝缘膜以及非水电解质电池 |
-
2021
- 2021-12-27 CN CN202180025306.0A patent/CN116670899A/zh active Pending
- 2021-12-27 WO PCT/JP2021/048711 patent/WO2023127066A1/ja not_active Ceased
- 2021-12-27 JP JP2022534814A patent/JP7120502B1/ja active Active
- 2021-12-27 US US17/913,319 patent/US11973197B2/en active Active
- 2021-12-27 KR KR1020227033109A patent/KR20240122607A/ko active Pending
-
2022
- 2022-08-04 JP JP2022124948A patent/JP7768068B2/ja active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000067846A (ja) * | 1998-08-20 | 2000-03-03 | Dainippon Printing Co Ltd | 安全弁付き電池ケース |
| JP2012104503A (ja) * | 2012-01-24 | 2012-05-31 | Sumitomo Electric Ind Ltd | 電気部品、非水電解質電池、並びに、それらに用いられる絶縁被覆層つきリード導体及び封入容器 |
| JP2017073200A (ja) * | 2015-10-05 | 2017-04-13 | 住友電気工業株式会社 | リード部材 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2025084379A1 (ja) * | 2023-10-17 | 2025-04-24 | 大日本印刷株式会社 | 金属端子用接着性フィルム及びその製造方法、金属端子用接着性フィルム付き金属端子、蓄電デバイス用外装材、蓄電デバイス用外装材と金属端子用接着性フィルムを備えるキット、並びに、蓄電デバイス及びその製造方法 |
| JP7708346B1 (ja) * | 2023-10-17 | 2025-07-15 | 大日本印刷株式会社 | 金属端子用接着性フィルム及びその製造方法、金属端子用接着性フィルム付き金属端子、蓄電デバイス用外装材、蓄電デバイス用外装材と金属端子用接着性フィルムを備えるキット、並びに、蓄電デバイス及びその製造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116670899A (zh) | 2023-08-29 |
| US20230207891A1 (en) | 2023-06-29 |
| JP2023097331A (ja) | 2023-07-07 |
| JP7120502B1 (ja) | 2022-08-17 |
| KR20240122607A (ko) | 2024-08-13 |
| US11973197B2 (en) | 2024-04-30 |
| JPWO2023127066A1 (ja) | 2023-07-06 |
| JP7768068B2 (ja) | 2025-11-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP7120502B1 (ja) | 非水電解質電池用リード線、絶縁膜及び非水電解質電池 | |
| US10347877B2 (en) | Battery packaging material | |
| CN103094497B (zh) | 电池用外包装体、电池用外包装体的制造方法和锂二次电池 | |
| JP7058465B2 (ja) | 蓄電デバイス金属端子部密封用接着性フィルム | |
| JP6881320B2 (ja) | 非水電解質電池用リード線及びそれを含む非水電解質電池 | |
| JP7120501B1 (ja) | 非水電解質電池用リード線、絶縁膜及び非水電解質電池 | |
| JP7134853B2 (ja) | 組成物層および金属層を有する複合体 | |
| JP7104269B2 (ja) | 非水電解質電池用リード線及びそれを備える非水電解質電池 | |
| KR20200003559A (ko) | 이차전지용 리드 탭 필름 및 이를 포함하는 이차전지 | |
| US20240186662A1 (en) | Lead wire for nonaqueous electrolyte battery, insulating film and nonaqueous electrolyte battery | |
| US20240178532A1 (en) | Tab sealants and power storage devices using the same | |
| WO2023119721A1 (ja) | 非水電解質電池用リード線、絶縁膜及び非水電解質電池 | |
| WO2023153301A1 (ja) | 非水電解質電池用リード線、絶縁膜及び非水電解質電池 | |
| EP4170786A1 (en) | Sealing film, electrode lead member, and battery | |
| JP2009164134A (ja) | リードの製造方法 | |
| JP2014132539A (ja) | リチウムイオン電池用外装材及びこれを用いたリチウムイオン電池 | |
| JP2009110779A (ja) | 電気部品、非水電解質電池、並びに、それらに用いられるリード線及び封入容器 | |
| TW202446595A (zh) | 熱熔接著膜、密封膜、金屬端子、電池及裝置 | |
| WO2021241560A1 (ja) | 封止フィルム、電極リード線部材および電池 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WWE | Wipo information: entry into national phase |
Ref document number: 2022534814 Country of ref document: JP |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 202180025306.0 Country of ref document: CN |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 21969948 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: 21969948 Country of ref document: EP Kind code of ref document: A1 |