WO2006016535A1 - フィルム外装電気デバイスおよびその製造方法 - Google Patents
フィルム外装電気デバイスおよびその製造方法 Download PDFInfo
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- WO2006016535A1 WO2006016535A1 PCT/JP2005/014428 JP2005014428W WO2006016535A1 WO 2006016535 A1 WO2006016535 A1 WO 2006016535A1 JP 2005014428 W JP2005014428 W JP 2005014428W WO 2006016535 A1 WO2006016535 A1 WO 2006016535A1
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- Prior art keywords
- film
- heat
- exterior
- electrical device
- resin layer
- Prior art date
Links
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Classifications
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- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/317—Re-sealable arrangements
- H01M50/325—Re-sealable arrangements comprising deformable valve members, e.g. elastic or flexible valve members
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- H—ELECTRICITY
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- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/14—Arrangements or processes for adjusting or protecting hybrid or EDL capacitors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/78—Cases; Housings; Encapsulations; Mountings
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- H—ELECTRICITY
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- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
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- H01G11/78—Cases; Housings; Encapsulations; Mountings
- H01G11/80—Gaskets; Sealings
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- H—ELECTRICITY
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- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
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- H01G2/08—Cooling arrangements; Heating arrangements; Ventilating arrangements
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- H01G2/00—Details of capacitors not covered by a single one of groups H01G4/00-H01G11/00
- H01G2/10—Housing; Encapsulation
- H01G2/103—Sealings, e.g. for lead-in wires; Covers
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/08—Housing; Encapsulation
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- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/004—Details
- H01G9/08—Housing; Encapsulation
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- H—ELECTRICITY
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/121—Organic material
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- 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
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- 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
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/342—Non-re-sealable arrangements
- H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
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- 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
- 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
- H01M50/186—Sealing members characterised by the disposition of the sealing members
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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- 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
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- 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
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- 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
- H01M50/557—Plate-shaped terminals
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- 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
- H01M50/562—Terminals characterised by the material
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- 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
- H01M50/564—Terminals characterised by their manufacturing process
- H01M50/566—Terminals characterised by their manufacturing process by welding, soldering or brazing
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- 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
- 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
- Y02E60/13—Energy storage using capacitors
Definitions
- the present invention relates to an electric device represented by a battery or a capacitor, and in particular, a film-covered electric device in which an electric device element such as a chemical cell element or a capacitor element is sealed with a film outer material On the way.
- a film-covered electrical device is a film-covered battery.
- the battery element is sandwiched from both sides in the thickness direction thereof with an outer film having a dimension larger than the planar dimension of the battery element, and the facing outer films are joined to each other at the outer periphery of the battery element.
- a battery element is hermetically sealed (hereinafter, also simply referred to as "sealed").
- the positive electrode and negative electrode tabs are connected to the battery element as an electrode, and when the battery element is sealed, these tabs are pulled out from the exterior film.
- a laminated film in which a metal layer and a heat-fusing resin layer are laminated is used as the exterior film, and the battery element is sealed by heat-fusing the heat-fusing resin layers.
- gas species may be generated due to the electrolysis of the electrolyte solvent.
- decomposition of electrolyte salt etc. will generate a substance that is the source of gas species.
- the battery control circuit may fail for some reason and an abnormal voltage may be applied, or the environment may become hotter due to some reason. A large amount of gas may be generated.
- Japanese Patent Application Laid-Open No. 2004-55290 discloses a heat-fused portion 106 formed by heat-sealing an exterior film 104 around a battery element (not shown).
- a film-clad battery 101 is disclosed in which a portion protrudes toward a region for housing a battery element.
- a gas release portion 107 is formed on the exterior film 104 with its tip facing the protruding portion of the heat seal portion. The gas release portion 107 is formed by not heat-sealing the exterior film 104.
- FIG. 2 is a cross-sectional view of the film-clad battery shown in FIG. 1 at a gas release portion.
- the exterior film 104 is disposed with the heat-bonded resin layers 111 facing each other, and in the heat-bonded portion 106, the heat-bonded resin layers 111 are integrated by heat-bonding. It has been The outer layer of the heat fusible resin layer 111 is a metal layer 112.
- the bowing stress of the outer film 104 is applied to the inner edge of the heat-sealed portion 106, and the peeling of the outer film 104 destroys the heat-bonded resin layer 111. It progresses while doing.
- the gas release portion does not function as a safety valve, and pressure release is performed until the exfoliation reaches the outer edge of the exterior film. Can not be done. As a result, the opening pressure becomes high.
- the direction of the peeling at the interface between the heat-bonding resin layer and the metal layer is not fixed, so the pressure release position may be widely dispersed. There is sex. That is, in the conventional pressure release structure, depending on the progress of peeling, the release pressure and the pressure release position may become unstable.
- the above-mentioned matters are not limited to the film-clad battery, and are common problems to the film-clad electrical device in which an electric device element capable of generating a gas is sealed with the film casing.
- An object of the present invention is to provide a film-covered electrical device and a method of manufacturing the same, which can set the open pressure and the pressure release position at the time of expansion of the outer covering film due to abnormal gas generation easily and reliably. It is to provide.
- a film-covered electrical device of the present invention has an electrical device element and an exterior film sealing the electrical device element. Exterior film is small
- the heat-fusing resin layer is opposed to each other to enclose the electric device element, and the heat-fusing resin layers opposed to each other are heat-sealed at the outer peripheral portion.
- the sheath film seals the electric device element with the heat-sealed area as the heat-sealing portion and the space inside the heat-sealed portion as the electric device element housing portion.
- the heat fusion is performed in a continuous region including a part of the heat fusion part so that at least one of the facing exterior films has a part exposed to the electric device element storage part and another part in contact with the outside air.
- a cross-linked structure is formed by cross-linking the resin layer! Scold.
- the heat-sealing resin layers of the facing armored film are heat-sealed with each other, whereby the electric device element is sealed.
- the region including a part of the heat-fused portion formed by heat-fusing at least one of the facing exterior films cross-links the heat-fused resin layer in the specific region as described above. As a result, a crosslinked structure part is formed.
- the area where the cross-linked structure is formed peels off with a small force compared to the other areas.
- peeling preferentially proceeds at the interface of the facing exterior film in the region where the crosslinked structure portion is formed.
- the peeling position and the pressure release position are identified, which facilitates the setting of the release pressure.
- the heat fusion bonding portion is formed to have a protruding fusion bonding portion protruding toward the electric device element storage portion, and the cross-linked structure includes the protruding fusion bonding portion. Preferred to form in the range. Since the bowing stress applied to the heat-sealed portion concentrates on the protruding and welded portion, the progress of the peeling in the region where the crosslinked structure portion is formed is promoted.
- a gas release portion communicating with the outside air and not communicating with the battery element storage portion is provided on the outer peripheral portion of the exterior film, and the bridging structure includes a region in contact with the gas release portion as another portion contacting with the outside air.
- the pressure release is reliably performed from the gas release portion.
- the gas released at the time of pressure release can be guided to a suitable position.
- the crosslinked structure portion may be formed by subjecting the heat fusible resin layer of the exterior film to a crosslinking treatment, or by forming a crosslinked resin sheet fused to the exterior film. It is also good.
- an electrical device element is surrounded by an covering film including at least a heat-fusing resin layer, and the outer peripheries of the facing covering films are heat-sealed.
- a method of manufacturing a film-covered electrical device in which the thermally fused area is used as the thermally fused area and the space inside the space is used as the electrical device element storage area to seal the electrical device element.
- the thermally fused area is used as the thermally fused area and the space inside the space is used as the electrical device element storage area to seal the electrical device element.
- the facing exterior film is continuous in a continuous region including a part of the region to be a heat fusion portion of the exterior film.
- the part is formed in advance.
- the film-covered electrical device of the present invention as described above is obtained by surrounding the electric device element with the covering film and heat-sealing the facing outer peripheral portions in the same manner as usual using the covering film having the crosslinked structure formed therein. Is obtained.
- the crosslinked structure portion can be formed by irradiation of an electron beam to the thermally fused resin layer.
- the peeling force in the region where the crosslinked structure part is formed can be easily controlled by the irradiation amount of the electron beam at the time of forming the crosslinked structure part.
- a cross-linked structure portion is formed in a partial region of the heat-fused resin layer, and the exterior film is heat-fused using this cross-linked structure portion, thereby achieving an abnormal state.
- the release pressure and the pressure release position at the time of expansion of the exterior film due to gas generation can be easily and reliably set.
- FIG. 1 is a perspective view of a conventional film-clad battery.
- FIG. 2 is a cross-sectional view of the heat sealed portion of the film-clad battery shown in FIG.
- FIG. 3 is a cross-sectional view of the heat-sealed portion for explaining an example of the progress of peeling of the exterior film in the film-clad battery shown in FIG. [4]
- FIG. 1 it is a cross-sectional view of a heat-sealed portion when peeling of the outer-coating film proceeds at the interface between the heat-sealed resin layer and the metal layer.
- FIG. 6 A partial plan view of the film-clad battery shown in FIG. 5 around a pressure release structure.
- FIG. 7 is a cross-sectional view taken along the line A-A in FIG.
- FIG. 9 A graph showing experimental results comparing the peel strength in the case of cross-linking treatment to the exterior film and in the case of non-crosslinking treatment.
- FIG. 10 is a plan view of a film-clad battery according to a second embodiment of the present invention.
- FIG. 11 A plan view of a film-clad battery according to a third embodiment of the present invention.
- FIG. 12 is a cross-sectional view taken along the line B-B in FIG.
- ⁇ 13 A plan view of a film-clad battery according to a fourth embodiment of the present invention.
- FIG. 14 A plan view showing a modification of the film-clad battery shown in FIG.
- FIG. 15 is a plan view showing another modified example of the film-clad battery shown in FIG.
- FIG. 16 A sectional view in the vicinity of a heat-sealed part of a film-clad battery, for describing a further embodiment of the present invention.
- a flat, substantially rectangular battery element 2 having a structure in which a plurality of positive electrodes and a plurality of negative electrodes are stacked, a positive electrode tab 3a connected to the positive electrode and the negative electrode of battery element 2, and A film-clad battery 1 according to a first embodiment of the invention is shown, having a negative electrode tab 3 b and two armor films 4, 5 sealing the battery element 2.
- Battery element 2 has a structure in which a plurality of positive electrodes and a plurality of negative electrodes made of metal foils coated with electrode materials on both sides are alternately stacked via a separator. An electrode material is applied from one side of each positive electrode and each negative electrode, and an uncoated portion is provided so as to protrude. The uncoated portions of the positive electrode and the uncoated portions of the negative electrode are respectively provided. It is collectively ultrasonically welded and connected to the positive electrode tab 3a and the negative electrode tab 3b. The ultrasonically welded uncoated portions of the positive and negative electrodes are called current collectors. That is, the positive electrode tab 3a and the negative electrode tab 3b are connected to the current collector of the battery element 2, respectively.
- the positive electrode and the negative electrode constituting the battery element 2 are overlapped with the uncoated portions of the electrode material in the same direction. Therefore, the positive electrode tab 3 a and the negative electrode tab 3 b are connected to the same side of the battery element 2.
- the positive electrode tab 3a and the negative electrode tab 3b are electrodes for electrical connection with the outside, and as shown in FIG. 6, the tip portions of the positive electrode tab 3a and the negative electrode tab 3b are outside the exterior films 4 and 5 Have been pulled out.
- the planar shape of the film-covered battery 1 is substantially rectangular, and the positive electrode tab 3a and the negative electrode tab 3b are drawn from the short side of the rectangle.
- an aluminum foil is used as a metal foil constituting a positive electrode
- a copper foil is used as a metal foil constituting a negative electrode
- an aluminum plate is used for the positive electrode tab 3a
- a nickel plate or a copper plate is used for the negative electrode tab 3b.
- the negative electrode tab 3b is made of a copper plate, the surface is nickel-plated Good luck.
- the separator is a sheet-like member which can be impregnated with an electrolytic solution, such as a microporous film (microporous film), a non-woven fabric or a woven fabric, which is made of thermoplastic resin such as polyolefin. be able to.
- an electrolytic solution such as a microporous film (microporous film), a non-woven fabric or a woven fabric, which is made of thermoplastic resin such as polyolefin.
- the exterior films 4 and 5 have a planar dimension larger than the planar dimension of the battery element 2 in order to surround the battery element 2 from both sides in the thickness direction, and overlap around the battery element 2
- the battery element 2 is sealed by heat-sealing the facing surfaces. Therefore, the periphery of the battery element 2 is a sealed region all around, and particularly the heat-sealed region is hatched as a heat-sealed portion 6 in the drawing.
- One of the exterior films 4 has a cup portion 4 a in the central region in order to form a battery element storage portion which is a space surrounding the battery element 2.
- the heat sealing portion 6 is formed over the entire circumference of the cup portion 4a.
- the processing of the cup 4a can be performed by deep drawing.
- a cup may be formed on both of the exterior films 4 and 5 in which the cup 4a is formed only on one of the envelope films 4.
- the exterior may be formed without forming the cup.
- the flexibility of the films 4 and 5 may be used to enclose the battery element 2.
- the exterior films 4 and 5 are laminate films.
- FIG. 1 Typically, as shown in FIG.
- the protective film 13 may be provided as needed if it has at least the heat-fusion layer resin 11 and the non-air-permeable layer 12.
- the metal thin film constituting the non-air-permeable layer 12 for example, foils of Al, Ti, Ti alloy, Fe, stainless steel, Mg alloy, etc. having a thickness of 10 to L 00 m can be used. .
- the heat fusible resin used for the heat fusible resin layer 11 will be described later.
- the thickness of the heat sealing resin layer 11 is preferably 10 to 200 ⁇ m, and more preferably 30 to: LOO ⁇ m is there.
- a pressure release structure is provided in part of the sealing region.
- the pressure release structure is located between the positive electrode tab 3a and the negative electrode tab 3b in the present embodiment.
- a protruding fusion part 6a formed by projecting a part of the inner edge of the thermal fusion part 6 toward the battery element side, and a protrusion fusion part 6a from the outer edge of the exterior films 4 and 5
- a gas release portion 7 whose tip end reaches the protruding fusion portion 6a.
- the gas release portion 7 is formed as a region between the exterior films 4 and 5 in which the exterior films 4 and 5 merely face each other without heat fusion of the exterior films 4 and 5.
- the gas release unit 7 is in communication with the outside air.
- the gas release portion 7 is formed at a position separated from the battery element storage portion, and therefore, the gas release portion 7 communicates with the battery element storage portion.
- a cross-linked structure portion 8 is formed by a cross-linking treatment on a part of the heat-fusion resin layer 11 of the exterior film 5 on the lower side, ie, where the cup portion is not formed.
- the crosslinked structure portion 8 is formed at least in a region including the protruding fusion portion 6 a. Accordingly, the cross-linked structure portion 8 is one continuous region in which one portion is exposed to the battery element storage portion and the other portion is exposed to the gas release portion 7.
- the cross-linked structure portion 8 is formed in a region including the protruding fusion-bonded portion 6a, so in the protruding fusion-bonded portion 6a, the heat-fusing resin layer 11 of the upper exterior film 4 is a cross-linking of the lower exterior film 5. Heat-sealed with structure 8
- the cross-linked structure portion 8 is shown as indicating its position. The same applies to the plan view of the film-clad battery showing the following embodiments.
- the cross-linked structure portion 8 can be formed by irradiating the heat-fused resin layer 11 with an electron beam. There is also a method of adding a crosslinking agent to the resin as a method of crosslinking the heat fusible resin, but it is easy to use only a specific position using a mask that shields the electron beam by using the electron beam.
- the cross-linked structure portion 8 can be formed selectively.
- the thermally fusible resin constituting the thermally fusible resin layer 11 is formed.
- the resin composition it is possible to use a resin composition which is capable of heat fusion and which can form the crosslinked structure portion 8 by irradiation of an electron beam.
- the heat-bonding resin layer 11 is made of
- the resin may be a single resin, a mixture of multiple resins, or an electron beam-decomposable resin, to which an electron beam reactive compound is added (including mixing and coating, etc. The same applies hereinafter).
- the composition can be used.
- polyolefin homopolymers such as polyethylene (high / medium / low density polyethylene, linear low density polyethylene) and polypropylene; propylene / ethylene copolymer, propylene and Z or ethylene
- Polyolefin copolymers such as copolymers with ⁇ -olefin such as butene 1; ethylene / vinyl acetate copolymer (EVA), ethylene acetylarylate copolymer ( ⁇ ), ethylene methyl methacrylate copolymer (EMA), ethylene-glycidyl metatarylate copolymer (EGMA), etc.
- EVA ethylene / vinyl acetate copolymer
- EMA ethylene acetylarylate copolymer
- EMA ethylene methyl methacrylate copolymer
- EGMA ethylene-glycidyl metatarylate copolymer
- the resin which has can be mentioned.
- the electron beam reactive compound is not particularly limited as long as it is a compound that reacts by irradiation of an electron beam, but compounds that are polyfunctional and capable of forming a crosslinked structure are preferable.
- triethylene glycol di (meth) atalylate trimethylol propane tri (meth) atalylate, pentaerythritol tetra atalylate, dipentaerythritol hexatatalylate, pentaerythritol tritalylate hexamethylene diisosocyanate urethane
- Polyfunctional acrylic compounds such as polymers; Monofunctional acrylic compounds such as methyl (meth) atalylate, methoxypolyethylene glycol (meth) atalylate; Mixtures of polyfunctional acrylic compounds and monofunctional allyl compounds; Cycloaliphatic epoxy compounds such as 4-epoxycyclohexylmethyl-3,4'-epoxy cyclohexane carboxylate, 1,4 (6-methyl-3,4 epoxy
- the irradiation of the heat-fusion resin layer 11 with the electron beam is specifically performed before the sealing step of the battery element 2.
- the bridge structure portion 8 is not formed with respect to the exterior film 5 alone, and the area is masked with an electron beam shielding member.
- the electron beam shielding member any material can be used as long as it does not form the cross-linked structure 8 and the region is not irradiated with the electron beam, for example, aluminum, iron, etc. And metallic materials such as lead, titanium and copper, or glass materials. Among these, metal materials such as aluminum and iron are preferable from the viewpoint of easy processing and shaping into a desired shape.
- a cross-linked structure portion 8 is formed by irradiating a predetermined region with an electron beam on one of the two exterior films 4 and 5 as described above.
- the battery element 2 in which the positive electrode tab 3 a and the negative electrode tab 3 b are connected is prepared in advance, and is surrounded by the exterior films 4 and 5 described above.
- the exterior films 4 and 5 are oriented in such a manner that the thermal fusion resin layers 11 face each other.
- the regions facing the battery element 2 of the exterior films 4 and 5 are pressed and heated with a heat fusion head (not shown) to form a heat fusion part 6, thereby Seal the battery element 2
- a heat fusion head having a pressing surface corresponding to the shape of the heat fusion part 6 is used as the heat fusion head at the time of heat fusion, a special method for forming the protruding fusion part 6 a and the gas release part 7 Process is unnecessary.
- the outer covering films 4 and 5 and the heat sealing head are positioned relative to each other so that the position where the protruding fusion part 6 a is formed coincides with the position of the crosslinked structure part 8 of the outer covering film 5.
- exterior films 4 and 5 are heat-sealed in a batch or for each side first, and exterior films 4 and 5 are formed into a bag shape with one side open.
- the remaining one side force of the bag-like exterior films 4 and 5 which have been formed can also be formed by injecting the electrolyte solution and then thermally fusing the remaining one side.
- heat fusion of the other side is performed in a reduced pressure atmosphere (in a reduced pressure chamber)
- the film-sheathed battery 1 after sealing is returned to the atmospheric pressure atmosphere, whereby the exterior films 4 and 5 have atmospheric pressure.
- the battery pack 2 can be pressed onto the battery element 2 to bring the exterior films 4 and 5 into close contact with the battery element 2.
- the gas is discharged from the battery element 2 by applying a voltage outside the standard range during use or temporarily raising the temperature.
- the internal pressure of the film-clad battery 1 rises.
- the battery element storage portion which is a space surrounding the battery element 2 in the exterior films 4 and 5
- the inner edge of the heat-sealing portion 6 pulls the exterior films 4 and 5 Peeling stress acts.
- the protrusion fusion bonding portion 6a is a region in which the crosslinked structure portion 8 of the exterior film 5 and the heat fusion resin layer 11 of the exterior film 4 are thermally fused, as clearly shown in FIG.
- the cross-linked structure part 8 is completely integrated with the heat-bonded resin layer 11 even if the two are heat-sealed together at a high temperature at a high temperature as compared with the heat-bonded resin layer 11 There is a boundary between the cross-linked structure 8 and the heat-fused resin layer 11.
- “it is difficult to soften at high temperature” means, for example, when the temperature and temperature characteristics at the time of raising the temperature while pressurizing the resin with a constant stress, so-called creep curve, the temperature is taken as the temperature on the horizontal axis. Mean that the slope of the creep curve is reduced.
- the communication between the battery element storage portion and the gas release portion 7 causes the gas in the battery element storage portion to be released to the outside of the film-covered battery 1 through the gas release portion 7 and the pressure in the battery element storage portion is released. Be done. As described above, since the peeling interface of the exterior films 4 and 5 is defined by the crosslinked structure portion 8, the gas opening pressure is stable, and the pressure release is reliably performed at the gas release portion 7. A highly reliable film-clad battery 1 is provided.
- the crosslinked resin layer and the non-crosslinked resin layer are thermally fused
- the crosslinked resin layer and the non-crosslinked resin layer are non-crosslinked.
- the crosslinked polymer chains must flow Since the force S can not be obtained, it is unlikely that the polymer chains in the non-crosslinked resin layer melt and unite with each other.
- non-crosslinked polymer chains are also present in gaps or inside of the matrix of crosslinked polymer chains.
- Such cross-linked, free polymer chains are assembled, and in minute parts, the polymer chains can melt and flow at temperatures above the melting point.
- the cross-linked resin layer and the non-cross-linked resin layer are heat-sealed, it is in the cross-linked resin layer that contributes to the fusion between the two resin layers at the welded interface.
- the cross-linked polymer chains in the cross-linked resin layer do not form a continuous integral with the non-cross-linked resin layer.
- Such continuous non-integral portions are present at the fusion interface of the two resin layers, and therefore, when a peeling stress is applied to both resin layers, the fusion interface of both resin layers is present. That is, peeling proceeds at the interface of the exterior films 4 and 5.
- the degree of crosslinking of the crosslinked resin layer when the degree of crosslinking of the crosslinked resin layer is changed, the proportion of the above-mentioned minute portion in which free polymer chains which are not crosslinked are gathered changes.
- the ratio of the aggregates or crystals continuously integrated between the resin layers through the fused interface changes.
- the degree of crosslinking of the crosslinked resin layer is lowered, the proportion of the minute portion increases, and the proportion of aggregates or crystals continuously integrated among the resin layers increases.
- the higher the proportion of continuously integrated aggregates or crystals between the resin layers the higher the fusion strength of each resin layer. Since the degree of crosslinking of the crosslinked resin layer can be controlled by changing the irradiation amount of the electron beam, etc., the fusion strength of each resin layer can also be freely controlled by controlling the irradiation amount of the electron beam. Become.
- the fusion bonding strength means, in other words, peel strength. That is, the fusion strength is high The more it peels, the higher the peel strength.
- the present inventors conducted the following peeling test to examine the difference in peel strength depending on the presence or absence of the crosslinked structure layer.
- a crosslinked structure layer was formed on one side of the facing exterior films, the crosslinked structure layer and the non-crosslinked structure layer were opposed, and a part of the exterior film was thermally fused to a width of 10 mm.
- a sheath film not having a crosslinked structure layer was used, and similarly, a part of the sheath film was heat-sealed with a heat-sealing width of 10 mm.
- the heat-sealed portion of the exterior film is heat-sealed in the direction perpendicular to the width direction of the heat-sealed, and the same length including the portion, etc.
- the samples were used as invention samples (Sinv-1, Sinv-2) and comparative samples (Scom-1, Scom-2), respectively.
- the open pressure of the gas in the present embodiment depends on the peel strength of the exterior films 4 and 5 at the protruding fusion part 6 a.
- the fusion bonding strength depends on the irradiation amount of the electron beam at the time of forming the crosslinked structure portion 8 as described above. If the irradiation amount of the electron beam is large, the degree of crosslinking of the heat-fused resin layer 11 irradiated with the electron beam tends to be high, and the peel strength of the exterior films 4 and 5 at the protruding fusion portion 6a tends to be small. By reducing the peel strength pressure is released at lower pressure. That is, the release pressure can be arbitrarily set by appropriately adjusting the degree of crosslinking of the heat-fused resin layer 11.
- a preferable designed open pressure is 0.05 MPa to 1 MPa as a rise from atmospheric pressure, and more preferably 0.1 MPa to 0.2 MPa. If the open pressure is lower than 0, 05MPa, a large current will temporarily flow or the primary temperature will rise. Even minor troubles such as when it happens may be released, and it will easily lead to a problem that the film-clad battery 1 will not operate. On the other hand, if the open pressure is higher than I MPa, the possibility of the gas being released in an unintended direction is increased, before the separation to the gas release part 7 proceeds before the exfoliation proceeds.
- FIG. 10 An example is shown in FIG. 10 as a second embodiment of the present invention.
- a film-clad battery 21 shown in FIG. 10 has a pressure release structure at its long side. Also in the present embodiment, the positive electrode tab 23a and the negative electrode tab 23b are drawn from the short side of the film-clad battery 21. Therefore, in the present embodiment, in the pressure release structure, the positive electrode tab 23a and the negative electrode tab 23b are drawn. It is provided on the side different from the side.
- the battery element (not shown) is enclosed from the both sides in the thickness direction so as to be sandwiched between the two exterior films 24, and the positive electrode tab 23a and the negative electrode are thermally fused by thermally bonding the peripheral portion of the exterior film 24 all around.
- the tab 23b is sealed in a state of being bowed out.
- the configuration of the battery element and the layer configuration of the exterior film 24 are the same as in the first embodiment, and thus the detailed description thereof is omitted.
- a protruding fused part 26 a formed by projecting a part of the inner edge of the heat fused part 26 formed by heat fusing of the exterior film 24 to the battery element side, and the exterior film 24
- a gas release portion 27 extends from the outer edge toward the protruding fusion portion 26a, and the tip reaches the protruding fusion portion 26a.
- the gas release portion 27 is formed as a region where the exterior film 24 merely faces each other without heat fusion of the exterior film 24, whereby the gas release portion 27 communicates with the outside air.
- the battery element and the thermal adhesion part 26 are provided on the side from which the positive electrode tab 23a and the negative electrode tab 23b are drawn. Since a space for the current collecting portion is required between them, the heat sealing portion 26 can be provided with a protruding sealing portion without changing the external dimensions of the film-clad battery 21.
- the pressure release structure is provided on the side of the positive electrode tab 23a and the negative electrode tab 23b that have been bowed I /! In such a case, there is no space as described above between the battery element and the heat seal 26 on that side. Therefore, if it is attempted to simply add the protruding fusion part 26 a to the heat fusion part 26, the outer dimensions of the film-clad battery 21 become large.
- the exterior film 24 is formed so as to partially project outward, so that a cove-like area communicating with the battery element storage part is formed by the overhanging part.
- the protruding fusion part 26a is formed in the cove-shaped area. Both sides of the protruding fusion part 26a are formed as a non-fusion part 24a in which the exterior film 24 is not heat-fused.
- the cove-shaped region communicated with the battery element storage part and forming the protruding fusion part 26 a in this region the stress of the film-covered battery 21 is suppressed while minimizing the increase in the external dimension of the film-clad battery 21. It is possible to form a protruding fusion part 26a having a function as a concentration part.
- a crosslinked structure 28 is formed in the heat-fused resin layer by irradiation of the electron beam.
- the cross-linked structure portion 28 is formed in a region including the protrusion fusion bonding portion 26 a, and a portion thereof is exposed to the battery element storage portion and the gas release portion 27. Therefore, the exfoliation of the exterior film 24 caused by the rise in the internal pressure of the battery element storage portion is the same as in the first embodiment, at the boundary between the cross-linked structure 8 and the heat-fusion resin layer of the other exterior film. Proceed along. Therefore, also in the present embodiment, a highly reliable film-clad battery 21 is provided in which the open pressure of the gas is stable and the pressure release is reliably performed at the gas release portion 27.
- FIGS. 11 and 12 show a film-clad battery according to a third embodiment of the present invention.
- the film-clad battery 31 of the present embodiment is different from the second embodiment in that a tube 39 is connected to the gas release portion 37.
- a protruding fusion part 36a is formed as a stress concentration part in a part of the heat fusion part 36, and a gas release part 37, which is a space where the exterior film 34 is not heat fused.
- a front end portion facing the protruding fusion portion 36a, and in the region including the protruding fusion portion 36a, one of the heat sealing resin layer of the two exterior films 34 has a crosslinked structure portion Forming 38 is the same as in the second embodiment.
- One end portion of the tube 39 is airtightly connected to the gas release portion 37, and the other end portion opened is routed to an appropriate position which has no influence even if the gas generated from the battery element 32 is released. There is. Since the other end of the tube 39 is open, the gas release portion 37 communicates with the outside air via the tube 39.
- the battery element storage portion which is a space for storing the battery element 32, rises, and the exterior film 34 is peeled off at the protruding fusion portion 36a.
- the battery element storage portion force also introduces a gas into the gas release portion 37, and the introduced gas also discharges the open end force of the tube 39 through the tube 39.
- the gas release position can be set arbitrarily. Further, since the gas discharge position can be arbitrarily set by the tube 39, the position of the pressure release structure can also be set arbitrarily.
- the present embodiment is particularly effective in the case where there is a component sensitive to the influence of gas around the film-clad battery 31 and it is not preferable to release the gas directly from the gas release portion 37. If the open end of the tube 39 is placed at a position away from the film-clad battery 31, the gas can be released to a position away from the film-clad battery 31.
- the tube 39 functions effectively only when the peeling interface of the package film 34 is defined and the battery element storage portion and the gas release portion 37 can be reliably communicated with each other.
- the tube 39 is preferably composed of a flexible member.
- the tube 39 can be easily routed, and also after the installation of the film-clad battery 31, the position of gas release can be freely changed. it can.
- the connection of the tube 39 to the gas release portion 37 is performed by sandwiching the end of the tube 39 between the two armor films 34 and adhering the outer edge of the armor film 34 to the outer peripheral surface of the tube 39 in that state. It can be carried out.
- the bonding method of the outer covering film 34 and the tube 39 is not particularly limited as long as the tube 39 can be airtightly connected, and bonding can be performed by an adhesive. If the tube 39 is made of thermoplastic resin, heat fusion is performed.
- the tube 39 can be connected by heat fusible.
- Heat sealing of tube 39 inserts tube 39 in forming gas release 37
- the fusion film 34 is heat-sealed leaving the opening for the heat treatment, and then the end of the tube 39 is inserted into the gas release part 37 through the opening, and the tube 39 is heat sealed to the fixation film 34 in that state. It may be carried out by fusing.
- the tube 39 is placed at a predetermined position sandwiched between the exterior film 34, and the tube 39 is connected simultaneously with the formation of the heat sealing portion 36 to the exterior film 34. can do.
- the cross-linked structure portion is a region that is difficult to soften at high temperature compared to other regions, and as a result, the region in which the cross-linked structure portion is formed itself has peel strength compared to other regions. Become smaller. Therefore, in the case where the peeling position can be sufficiently defined only by forming the cross-linked structure, the cross-linked structure may be formed only on a part of the thermally fused part without providing the stress concentration part.
- FIG. 13 a film-clad battery according to a fourth embodiment of the present invention is shown.
- the film-clad battery 41 of the present embodiment uses a rectangular outer packaging film 44, and a heat-sealed portion 46 is formed over the entire circumference with a constant width over the entire circumference, and thereby a battery element ( Not shown) is sealed.
- the heat-sealed resin layer is formed by exposing the inner edge of the heat-sealed portion 46 to the battery element storage portion storing the battery element and aligning the outer edge with the outer edge of the heat-sealed portion 46.
- a crosslinked structure portion 48 is formed. That is, the cross-linked structure portion 48 is formed by communicating a portion other than the portion exposed to the battery element storage portion with the outside air.
- the area in which the crosslinked structure portion 48 is formed is exfoliated compared to the other area of the thermally fused portion The strength is getting smaller. Therefore, the peeling of the exterior film 44 accompanying the internal pressure rise of the film-clad battery 41 preferentially progresses in the region where the crosslinked structure portion 48 is formed.
- the exfoliation reaches the outer edge of the cross-linked structure 48, the battery element housing and the ambient air communicate with each other, and gas is released from the outer edge of the region where the cross-linked structure 48 is formed to release pressure.
- the shape and size of the cross-linked structure portion 48 are determined in such a manner that the cross-linked structure portion 48 partially It is not particularly limited as long as it is shaped or sized such that the other part not exposed in the battery element storage part communicates with the outside air.
- FIG. 13 shows an example in which the cross-linked structure portion 48 is formed in a rectangular shape
- the cross-linked structure portion 58 may be formed in a trapezoidal shape as in, for example, the film-clad battery 51 shown in FIG.
- FIG. 14 shows a cross-linked structure 58 formed such that the inner edge length L1 is longer than the outer edge length L2 and the dimension is reduced outward from the edge on the battery element storage side.
- FIG. 15 shows another example of the pressure release structure having no stress concentration portion.
- the film-clad battery 61 shown in FIG. 15 is obtained by applying the tube 69 shown in the third embodiment to the example shown in FIG. That is, the gas release portion 67 is formed on the exterior film 64 by causing the tip portion to face the region where the crosslinked structure portion 68 is formed and the exterior films 64 are not heat-sealed together.
- the tube 69 is airtightly connected to the tube 67.
- the gas release part 67 may be in direct communication with the outside air without providing the tube 69.
- the cross-linked structure portion is an exterior that faces the resin sheet which is cross-linked rather than formed in the exterior film itself.
- it may be formed by fusing a crosslinked resin sheet on one of the facing exterior films.
- FIG. 16 A cross-sectional view of the example near the heat-sealed portion is shown in FIG.
- a cross-linked resin sheet 78 is sandwiched between the two exterior films 74 and 75 in a part of the heat sealing part 76.
- the resin sheet 78 is partially exposed in the battery element storage portion storing the battery element 72, and the other portion is exposed in the gas release portion 77, and if this condition is satisfied.
- the size, shape and the like are not particularly limited, and may be arranged in the same manner as each of the examples described above, including other structures.
- the resin sheet 78 is used as an exterior film on either of two facing exterior films 74 and 75. It is provided by being heat-sealed beforehand before heat-sealing Rum 74 and 85 comrades.
- the resin that makes up the resin sheet 78 has the heat fusible resin layer 74a, 75a of the exterior film 74, 75 to ensure the minimum fusible strength necessary to seal the battery element 72. It is preferable to use the same kind of resin.
- the form of the resin sheet 78 may be a film or a mesh. If it is in the form of mesh, it is expected that the necessary fusion strength can be secured by the anchor effect produced by the penetration of the thermally fused resin layer 74a, 75a melted by heat fusion into the mesh of the resin sheet 78.
- the fusion strength with the exterior films 74, 75 can be optionally controlled by appropriately adjusting the degree of crosslinking of the resin sheet 78. Peeling of the heat-sealed portion 76 occurs either at the interface between one of the outer covering film 74 and the resin sheet 78 or at the other between the outer covering film 75 and the resin sheet 78. In any case, peeling progresses in the area where the resin sheet 78 intervenes.
- the crosslinked structure portion is formed of the resin sheet 78, the same effect as each of the above-described examples can be obtained.
- the cross-linked structure portion is formed of the resin sheet 78 different from the exterior films 74 and 75, it can be easily distinguished whether or not the cross-linked structure portions are formed on the exterior films 74 and 75. This facilitates the control of parts during the manufacturing process, and widens the choice of materials for the exterior films 74, 75 (especially the heat-bonded resin layers 74a, 75a).
- both the exteriors may be provided if sufficient adhesive force is obtained to seal the battery element.
- the crosslinked structure may be formed in the film. In that case, the irradiation dose of the electron beam to each exterior film may be equal! /, Mutually different! /, But! /. When this configuration is applied to the example shown in FIG. 16, a cross-linked resin sheet is fused to each exterior film.
- the power of two exterior films sandwiching the battery element from both sides in the thickness direction and heat-sealing four sides is shown.
- Fold The battery element may be sealed by holding the battery element in place, opening it, and heat sealing the three sides.
- a positive electrode, a negative electrode and a separator are formed in a strip shape, showing a laminated type in which a plurality of positive electrodes and a plurality of negative electrodes are alternately stacked. It may be a wound-type battery element in which positive electrodes and negative electrodes are alternately arranged by stacking the negative electrodes, winding them, and compressing them in a flat shape.
- any battery element used for a normal battery is applicable as long as it contains a positive electrode, a negative electrode and an electrolyte.
- Battery elements in common lithium ion secondary batteries include a positive electrode plate obtained by applying a positive electrode active material such as lithium manganese oxide, lithium cobaltate, etc. to both sides of an aluminum foil, etc. It is formed by making the negative electrode plate which apply
- the present invention covers an electrical device such as a capacitor element exemplified in a capacitor such as an electric double layer capacitor, an electrolytic capacitor, etc. which can store electric energy inside and generate gas by chemical reaction or physical reaction. It is applicable to film-sealed electric devices.
- the positive electrode tab and the negative electrode tab are drawn out from the same side of the film-clad battery, they have different sides, for example, two opposing sides or two adjacent sides. It may be pulled out from the side.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Gas Exhaust Devices For Batteries (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
- Battery Mounting, Suspending (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
- Insulated Conductors (AREA)
- Organic Insulating Materials (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020077004313A KR100887792B1 (ko) | 2004-08-11 | 2005-08-05 | 필름 외장 전기 디바이스 및 그 제조 방법 |
DE602005024287T DE602005024287D1 (de) | 2004-08-11 | 2005-08-05 | Filmeingeschlossene elektrische einrichtung und herstellungsverfahren dafür |
CN2005800273065A CN101010817B (zh) | 2004-08-11 | 2005-08-05 | 膜封装的电气装置及其制造方法 |
AT05768917T ATE485604T1 (de) | 2004-08-11 | 2005-08-05 | Filmeingeschlossene elektrische einrichtung und herstellungsverfahren dafür |
US11/573,538 US8283061B2 (en) | 2004-08-11 | 2005-08-05 | Film-encased electric device and production method therefor |
EP05768917A EP1793436B1 (en) | 2004-08-11 | 2005-08-05 | Film-enclosed electric device and production method therefor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-234524 | 2004-08-11 | ||
JP2004234524A JP4232038B2 (ja) | 2004-08-11 | 2004-08-11 | フィルム外装電気デバイスおよびその製造方法 |
Publications (1)
Publication Number | Publication Date |
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WO2006016535A1 true WO2006016535A1 (ja) | 2006-02-16 |
Family
ID=35839305
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/014428 WO2006016535A1 (ja) | 2004-08-11 | 2005-08-05 | フィルム外装電気デバイスおよびその製造方法 |
Country Status (8)
Country | Link |
---|---|
US (1) | US8283061B2 (ja) |
EP (1) | EP1793436B1 (ja) |
JP (1) | JP4232038B2 (ja) |
KR (1) | KR100887792B1 (ja) |
CN (2) | CN101010817B (ja) |
AT (1) | ATE485604T1 (ja) |
DE (1) | DE602005024287D1 (ja) |
WO (1) | WO2006016535A1 (ja) |
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US20130115487A1 (en) * | 2011-11-08 | 2013-05-09 | Sk Innovation Co., Ltd. | Battery cell and battery module including the same |
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Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007115478A (ja) * | 2005-10-19 | 2007-05-10 | Toshiba Battery Co Ltd | 非水電解質電池 |
JP2010503150A (ja) * | 2006-08-28 | 2010-01-28 | エルジー・ケム・リミテッド | 一方向排気バルブを包含する二次バッテリー |
JP4927169B2 (ja) * | 2006-08-28 | 2012-05-09 | エルジー・ケム・リミテッド | 一方向排気バルブを包含する二次バッテリー |
EP2312670A3 (en) * | 2007-02-21 | 2011-05-11 | Nec Corporation | Packaged battery, stacked battery assembly, and film-covered battery |
US8722241B2 (en) | 2007-02-21 | 2014-05-13 | Nec Corporation | Packaged battery, stacked battery assembly, and film-covered battery |
US9653715B2 (en) | 2007-02-21 | 2017-05-16 | Nec Corporation | Packaged battery, stacked battery assembly, and film-covered battery |
US20130115487A1 (en) * | 2011-11-08 | 2013-05-09 | Sk Innovation Co., Ltd. | Battery cell and battery module including the same |
US8920950B2 (en) * | 2011-11-08 | 2014-12-30 | Sk Innovation Co., Ltd. | Pouch type battery cell and module having exhaust part in a region of the sealing part |
CN109004282A (zh) * | 2018-07-25 | 2018-12-14 | 柔电(武汉)科技有限公司 | 超薄软包锂电池用封头、封头组件、封装装置及封装方法 |
CN109004282B (zh) * | 2018-07-25 | 2023-11-03 | 柔电(武汉)科技有限公司 | 超薄软包锂电池用封头、封头组件、封装装置及封装方法 |
Also Published As
Publication number | Publication date |
---|---|
JP4232038B2 (ja) | 2009-03-04 |
CN101010817B (zh) | 2013-03-27 |
US8283061B2 (en) | 2012-10-09 |
JP2006054099A (ja) | 2006-02-23 |
CN101010817A (zh) | 2007-08-01 |
EP1793436A1 (en) | 2007-06-06 |
EP1793436B1 (en) | 2010-10-20 |
EP1793436A4 (en) | 2009-04-15 |
US20080233468A1 (en) | 2008-09-25 |
DE602005024287D1 (de) | 2010-12-02 |
CN103187177A (zh) | 2013-07-03 |
KR20070038168A (ko) | 2007-04-09 |
KR100887792B1 (ko) | 2009-03-09 |
ATE485604T1 (de) | 2010-11-15 |
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