WO2025041861A1 - 蓄電素子中間体の製造装置、蓄電素子の製造装置、蓄電素子中間体の製造方法、蓄電素子の製造方法、及び蓄電素子の外装体用の蓋体 - Google Patents

蓄電素子中間体の製造装置、蓄電素子の製造装置、蓄電素子中間体の製造方法、蓄電素子の製造方法、及び蓄電素子の外装体用の蓋体 Download PDF

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Publication number
WO2025041861A1
WO2025041861A1 PCT/JP2024/030107 JP2024030107W WO2025041861A1 WO 2025041861 A1 WO2025041861 A1 WO 2025041861A1 JP 2024030107 W JP2024030107 W JP 2024030107W WO 2025041861 A1 WO2025041861 A1 WO 2025041861A1
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WO
WIPO (PCT)
Prior art keywords
lid body
side end
exterior film
end surface
film
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.)
Pending
Application number
PCT/JP2024/030107
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
昌平 奥村
隆 辺見
白石　武
栄次 相澤
雄太 荒井
輝充 杉山
真一 三上
康治 小松
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dai Nippon Printing Co Ltd
Original Assignee
Dai Nippon Printing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dai Nippon Printing Co Ltd filed Critical Dai Nippon Printing Co Ltd
Priority to JP2025541566A priority Critical patent/JPWO2025041861A1/ja
Priority to CN202480053517.9A priority patent/CN121713313A/zh
Publication of WO2025041861A1 publication Critical patent/WO2025041861A1/ja
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/84—Processes for the manufacture of hybrid or EDL capacitors, or components thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G13/00—Apparatus specially adapted for manufacturing capacitors; Processes specially adapted for manufacturing capacitors not provided for in groups H01G4/00 - H01G11/00
    • 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
    • H01M10/04—Construction or manufacture in general
    • 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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
    • H01M10/0564—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of organic materials only
    • H01M10/0566—Liquid materials
    • 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
    • H01M10/058—Construction or manufacture
    • 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
    • H01M10/058—Construction or manufacture
    • H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat separators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M12/00—Hybrid cells; Manufacture thereof
    • H01M12/04—Hybrid cells; Manufacture thereof composed of a half-cell of the fuel-cell type and of a half-cell of the primary-cell type
    • H01M12/06—Hybrid cells; Manufacture thereof composed of a half-cell of the fuel-cell type and of a half-cell of the primary-cell type with one metallic and one gaseous electrode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M12/00—Hybrid cells; Manufacture thereof
    • H01M12/08—Hybrid cells; Manufacture thereof composed of a half-cell of a fuel-cell type and a half-cell of the secondary-cell type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—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
    • H01M50/147—Lids or covers
    • H01M50/148—Lids or covers characterised by their shape
    • 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
    • H01M50/147—Lids or covers
    • H01M50/148—Lids or covers characterised by their shape
    • H01M50/15—Lids or covers characterised by their shape for prismatic or rectangular 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
    • H01M50/147—Lids or covers
    • H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
    • 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
    • H01M50/147—Lids or covers
    • H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
    • H01M50/169—Lids or covers characterised by the methods of assembling casings with lids by welding, brazing or soldering
    • 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
    • H01M50/147—Lids or covers
    • H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
    • H01M50/171—Lids or covers characterised by the methods of assembling casings with lids using adhesives or sealing agents
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • 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
    • H01M50/548—Terminals characterised by the disposition of the terminals on the cells on opposite sides 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
    • H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
    • H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
    • 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 an apparatus for manufacturing an intermediate energy storage element, an apparatus for manufacturing an energy storage element, a method for manufacturing an intermediate energy storage element, a method for manufacturing an energy storage element, and a lid for an exterior body of an energy storage element.
  • Patent Document 1 JP Patent Publication No. 2022-123686 discloses an example of an energy storage element.
  • the energy storage device disclosed in Patent Document 1 includes an electrode body, an electrolyte, and an exterior body that contains the electrode body and the electrolyte.
  • the exterior body includes an exterior film that wraps the electrode body so that an opening is formed, and a lid that closes the opening.
  • the exterior body that contains the electrode body and the electrolyte needs to be sealed.
  • the electrode body and the lid body are connected by terminals.
  • the relative positions of the electrode body and the lid body are not fixed. Therefore, it is not easy to join the exterior film that encases the electrode body and the side end face of the lid body with a circumferential seal portion.
  • the purpose of this disclosure is to stably join the side end surface of the lid body and the exterior film using a circumferential seal portion.
  • an electrode body unit including a first lid body and a second lid body, an electrode body located between the first lid body and the second lid body, a first terminal electrically connected to the electrode body and connected to the first lid body, and a second terminal electrically connected to the electrode body and connected to the second lid body; and an exterior film wrapped around the electrode unit
  • a manufacturing apparatus for manufacturing an energy storage element intermediate including an exterior body including the first lid body, the second lid body, and the exterior film, and the electrode body housed in the exterior body, a fixing device that fixes the first cover and the second cover of the electrode unit;
  • the electrode unit further includes a joining device that joins the exterior film, which is wrapped around the electrode unit so as to contact each of the side end surfaces of the first lid body and the second lid body, to the side end surfaces.
  • an electrode body unit including a first lid body and a second lid body, an electrode body located between the first lid body and the second lid body, a first terminal electrically connected to the electrode body and connected to the first lid body, and a second terminal electrically connected to the electrode body and connected to the second lid body; and an exterior film wrapped around the electrode unit
  • a manufacturing apparatus for manufacturing an energy storage element intermediate including an exterior body including the first lid body, the second lid body, and the exterior film, and the electrode body housed in the exterior body, a fixing device that fixes the first cover and the second cover of the electrode unit; a winding device that winds the exterior film around the electrode unit so as to come into contact with each side end surface of the first lid body and the second lid body; and a joining device for joining the side end surface and the exterior film.
  • An apparatus for manufacturing an energy storage element according to an embodiment of the present disclosure includes: An apparatus for manufacturing an electric storage element intermediate according to an embodiment of the present disclosure; and an injection device that injects an electrolyte into the electric storage element intermediate.
  • a method for producing an electric storage element intermediate includes the steps of: an electrode body unit including a first lid body and a second lid body, an electrode body located between the first lid body and the second lid body, a first terminal electrically connected to the electrode body and connected to the first lid body, and a second terminal electrically connected to the electrode body and connected to the second lid body; and an exterior film wrapped around the electrode unit,
  • a manufacturing method for manufacturing an energy storage element intermediate including an exterior body including the first lid body, the second lid body, and the exterior film, and the electrode body housed in the exterior body comprising: fixing the first lid and the second lid of the electrode unit; and a step of joining the exterior film, which is wrapped around the electrode unit so as to be in contact with each of the side end surfaces of the first lid body and the second lid body, to the side end surfaces.
  • a method for producing an electric storage element intermediate includes the steps of: an electrode body unit including a first lid body and a second lid body, an electrode body located between the first lid body and the second lid body, a first terminal electrically connected to the electrode body and connected to the first lid body, and a second terminal electrically connected to the electrode body and connected to the second lid body; and an exterior film wrapped around the electrode unit,
  • the method includes a step of wrapping the exterior film around the electrode unit so as to contact each of the side end surfaces of the first lid body and the second lid body, and joining the side end surfaces and the exterior film.
  • a method for manufacturing an energy storage element according to an embodiment of the present disclosure includes: A step of producing an electric storage element intermediate by a method for producing an electric storage element intermediate according to an embodiment of the present disclosure; and injecting an electrolyte into the electric storage element intermediate.
  • a manufacturing apparatus includes: an electrode body unit including a first lid body and a second lid body, an electrode body located between the first lid body and the second lid body, a first terminal electrically connected to the electrode body and connected to the first lid body, and a second terminal electrically connected to the electrode body and connected to the second lid body; and an exterior film wrapped around the electrode unit,
  • the bonding device includes a roller-type heater, the roller-type heater includes a roller including a heated outer peripheral surface, a tip portion that rotatably holds the roller, a base portion that holds the tip portion, and a pressure unit located between the base portion and the tip portion, the tip end portion is
  • a manufacturing apparatus includes: an electrode body unit including a first lid body and a second lid body, an electrode body located between the first lid body and the second lid body, a first terminal electrically connected to the electrode body and connected to the first lid body, and a second terminal electrically connected to the electrode body and connected to the second lid body; and an exterior film wrapped around the electrode unit,
  • the bonding device includes a roller-type heater, the roller-type heater includes a roller including a heated outer peripheral surface, a tip portion that rotatably holds the roller, a base portion that holds the tip portion, and a pressure applying portion located between
  • a manufacturing apparatus includes: an electrode body unit including a first lid body and a second lid body, an electrode body located between the first lid body and the second lid body, a first terminal electrically connected to the electrode body and connected to the first lid body, and a second terminal electrically connected to the electrode body and connected to the second lid body; and an exterior film wrapped around the electrode unit,
  • a manufacturing apparatus includes: an electrode body unit including a first lid body and a second lid body, an electrode body located between the first lid body and the second lid body, a first terminal electrically connected to the electrode body and connected to the first lid body, and a second terminal electrically connected to the electrode body and connected to the second lid body; and an exterior film wrapped around the electrode unit,
  • a manufacturing apparatus includes: an electrode body unit including a first lid body and a second lid body, an electrode body located between the first lid body and the second lid body, a first terminal electrically connected to the electrode body and connected to the first lid body, and a second terminal electrically connected to the electrode body and connected to the second lid body; and an exterior film wrapped around the electrode unit,
  • a manufacturing apparatus includes: an electrode body unit including a first lid body and a second lid body, an electrode body located between the first lid body and the second lid body, a first terminal electrically connected to the electrode body and connected to the first lid body, and a second terminal electrically connected to the electrode body and connected to the second lid body; and an exterior film wrapped around the electrode unit,
  • Each of the first and second lids includes a recess on a surface that is an outer side in the first direction, the fixing device has
  • an electrode body unit including a first lid body and a second lid body, an electrode body located between the first lid body and the second lid body, a first terminal electrically connected to the electrode body and connected to the first lid body, and a second terminal electrically connected to the electrode body and connected to the second lid body; and an exterior film wrapped around the electrode unit
  • a manufacturing apparatus for manufacturing an energy storage element intermediate including an exterior body including the first lid body, the second lid body, and the exterior film, and the electrode body housed in the exterior body, a fixing device that fixes the first cover and the second cover of the electrode unit; a winding device that winds the exterior film around the electrode unit so as to contact a side end surface of the first lid body and a side end surface of the second lid body; a joining device for joining the side end surface and the exterior film, the first cover, the electrode body, and the second cover are positioned in this order in a first direction;
  • Each of the first and second lids includes a recess on a surface that
  • an electrode body unit including a first lid body and a second lid body, an electrode body located between the first lid body and the second lid body, a first terminal electrically connected to the electrode body and connected to the first lid body, and a second terminal electrically connected to the electrode body and connected to the second lid body; and an exterior film wrapped around the electrode unit
  • a manufacturing apparatus for manufacturing an energy storage element intermediate including an exterior body including the first lid body, the second lid body, and the exterior film, and the electrode body housed in the exterior body, a film supplying device for supplying the exterior film; a winding device that winds the exterior film around the electrode unit so as to contact a side end surface of the first lid body and a side end surface of the second lid body; a joining device for joining the side end surface and the exterior film, At least one of the film supply device and the winding device includes a film holding portion that holds the exterior film, the film holding unit includes a first roll and a second roll that holds the exterior film between the
  • a manufacturing method includes: A method for producing the energy storage element intermediate using the production apparatus of the first aspect described above, providing the exterior film; The method includes a step of joining the exterior film, which is wrapped around the electrode unit so as to contact each of the side end surfaces of the first lid body and the second lid body, to the side end surfaces using the roller-type heater.
  • a manufacturing method includes: A method for producing the energy storage element intermediate using the production apparatus of the second aspect described above, providing the exterior film; The method includes a step of wrapping the exterior film around the electrode unit so that it contacts each of the side end surfaces of the first lid body and the second lid body, and joining the side end surfaces and the exterior film using the roller-type heater.
  • a manufacturing method includes: A method for producing the electric storage element intermediate using the production apparatus of the fifth or sixth aspect, a step of joining the side end surface and the exterior film wrapped around the electrode unit; and joining a pair of extending portions of the exterior film wrapped around the electrode unit, the extending portions extending from the electrode unit and facing each other,
  • the roller heater is used for bonding the side end faces and the exterior film and/or bonding the pair of extended portions.
  • a manufacturing method includes: A method for producing the energy storage element intermediate using the production apparatus of the seventh aspect described above, providing the exterior film; The method includes a process of winding the exterior film around the electrode unit using the winding device so that it contacts each of the side end surfaces of the first lid body and the second lid body, and joining the side end surfaces and the exterior film using the joining device.
  • a manufacturing method includes: A method for producing the energy storage element intermediate using the production apparatus of the eighth aspect, fixing the first lid and the second lid of the electrode unit; and a step of joining the exterior film, which is wrapped around the electrode unit so as to be in contact with each of the side end surfaces of the first lid body and the second lid body, to the side end surfaces.
  • a manufacturing method includes: A method for producing the energy storage element intermediate using the production apparatus of the ninth aspect, fixing the first lid and the second lid of the electrode unit; The method includes a step of wrapping the exterior film around the electrode unit so as to contact each of the side end surfaces of the first lid body and the second lid body, and joining the side end surfaces and the exterior film.
  • a manufacturing method includes: A method for producing the energy storage element intermediate using the production apparatus of the tenth aspect, supplying the exterior film using the film supply device; The method includes a process of winding the exterior film around the electrode unit using the winding device so that it contacts each of the side end surfaces of the first lid body and the second lid body, and joining the side end surfaces and the exterior film using the joining device.
  • a method for manufacturing an energy storage element according to an embodiment of the present disclosure includes: A step of producing an electric storage element intermediate by the production method according to any one of the third to ninth aspects described above; and injecting an electrolyte into the electric storage element intermediate.
  • the side end surface of the lid body and the exterior film can be joined more stably.
  • FIG. 1 is a diagram for explaining a manufacturing apparatus and a manufacturing method according to an embodiment, and is a perspective view showing an example of an energy storage element to be manufactured by the manufacturing apparatus and the manufacturing method.
  • FIG. 2 is a perspective view showing an example of an electric storage element intermediate that can be used in the production of the electric storage element shown in FIG.
  • FIG. 3A is a perspective view showing an example of an electrode unit that can be used in manufacturing the electric storage element intermediate shown in FIG. 2.
  • FIG. 3B is a plan view of the electrode unit shown in FIG. 3A.
  • FIG. 4A is a cross-sectional view showing an example of a layer structure of an exterior film that can be used in producing the electric storage element and the electric storage element intermediate shown in FIGS. 1 and 2.
  • FIG. 4B is a developed plan view showing an example of an exterior film that can be used in the manufacture of the electric storage element and the electric storage element intermediate shown in FIGS. 1 and 2.
  • FIG. 5A is a perspective view showing an example of a lid that can be used in manufacturing the electric storage element and the electric storage element intermediate shown in FIG. 2.
  • FIG. 5B is a perspective view showing another example of a lid that can be used in manufacturing the electric storage element and the electric storage element intermediate shown in FIGS. 1 and 2.
  • FIG. FIG. 5C is a cross-sectional view showing still another example of a lid that can be used in manufacturing the electric storage element and the electric storage element intermediate shown in FIGS. 1 and 2.
  • FIG. FIG. 5D is a plan view showing the lid shown in FIG. 5C.
  • FIG. 5A is a perspective view showing an example of a lid that can be used in manufacturing the electric storage element and the electric storage element intermediate shown in FIG. 2.
  • FIG. 5B is a perspective view showing another example of a lid that can
  • FIG. 5E is a top view showing yet another example of a lid that can be used in manufacturing the electric storage element and the electric storage element intermediate shown in FIGS. 1 and 2.
  • FIG. 5F is a plan view showing the lid shown in FIG. 5E.
  • FIG. 5G is a top view showing yet another example of a lid that can be used in manufacturing the electric storage element and the electric storage element intermediate shown in FIGS. 1 and 2.
  • FIG. 5H is a plan view showing the lid shown in FIG. 5G.
  • FIG. 5I is a cross-sectional view showing still another example of a lid that can be used in manufacturing the electric storage element and the electric storage element intermediate shown in FIGS. 1 and 2.
  • FIG. 5J is a cross-sectional view showing still another example of a lid that can be used in manufacturing the electric storage element and the electric storage element intermediate shown in FIGS. 1 and 2.
  • FIG. 5K is a plan view showing the lid shown in FIG. 5J.
  • FIG. 5L is a cross-sectional view showing still another example of a lid that can be used in manufacturing the electric storage element and the electric storage element intermediate shown in FIGS. 1 and 2.
  • FIG. FIG. 5M is a plan view showing the lid shown in FIG. 5L.
  • FIG. 5N is a cross-sectional view showing still another example of a lid that can be used in manufacturing the electric storage element and the electric storage element intermediate shown in FIGS. 1 and 2.
  • FIG. FIG. FIG. 5K is a plan view showing the lid shown in FIG. 5J.
  • FIG. 5L is a cross-sectional view showing still another example of a lid that can be used in manufacturing the electric storage element and the electric storage element intermediate shown in FIGS. 1 and 2.
  • FIG. 5O is a cross-sectional view showing still another example of a lid that can be used in manufacturing the electric storage element and the electric storage element intermediate shown in FIGS. 1 and 2.
  • FIG. 5P is a cross-sectional view showing still another example of a lid that can be used in manufacturing the electric storage element and the electric storage element intermediate shown in FIGS. 1 and 2.
  • FIG. FIG. 6 is a configuration diagram showing an example of a manufacturing apparatus capable of manufacturing the electric storage element intermediate shown in FIG.
  • FIG. 7A is a flow chart showing an example of a manufacturing method for manufacturing the electric storage element intermediate shown in FIG.
  • FIG. 7B is a flow chart showing an example of step S4 shown in FIG. 7A.
  • FIG. 7C is a flow chart showing another example of step S4 shown in FIG.
  • FIG. 8A is a diagram for explaining step S2 shown in FIG. 7A and an example of a manufacturing apparatus that can be used for step S2.
  • FIG. 8B is a diagram for explaining step S2 shown in FIG. 7A and an example of a manufacturing apparatus that can be used for step S2.
  • FIG. 8C is a diagram for explaining step S2 shown in FIG. 7A and an example of a manufacturing apparatus that can be used for step S2.
  • FIG. 9 is a diagram for explaining step S3 shown in FIG. 7A and an example of a fixing device of a manufacturing apparatus that can be used in step S3.
  • FIG. 10A is a diagram showing another example of a fixing device.
  • FIG. 10B is a diagram showing yet another example of a fixing device.
  • FIG. 10A is a diagram showing another example of a fixing device.
  • FIG. 10C is a diagram showing yet another example of a fixing device.
  • FIG. 10D shows yet another example of a fixing device.
  • FIG. 10E is a diagram showing yet another example of a fixing device.
  • FIG. 10F shows yet another example of a fixation device.
  • FIG. 10G illustrates the fixation device shown in FIG. 10F.
  • FIG. 10H illustrates the fixation device shown in FIG. 10F.
  • FIG. 10I illustrates a variation of the fixation device shown in FIG. 10F.
  • FIG. 11A is a diagram for explaining step S41 shown in FIG. 7B and an example of a manufacturing apparatus that can be used in step S41.
  • FIG. 11B is a diagram for explaining step S42 shown in FIG. 7B and an example of a manufacturing apparatus that can be used in step S42.
  • FIG. 11A is a diagram for explaining step S41 shown in FIG. 7B and an example of a manufacturing apparatus that can be used in step S41.
  • FIG. 11B is
  • FIG. 11C is a diagram for explaining step S42 shown in FIG. 7B and an example of a manufacturing apparatus that can be used in step S42.
  • FIG. 11D is a diagram for explaining step S43 shown in FIG. 7B and an example of a manufacturing apparatus that can be used in step S43.
  • FIG. 11E is a diagram for explaining step S44 shown in FIG. 7B and an example of a manufacturing apparatus that can be used for step S44.
  • FIG. 11F is a diagram for explaining step S45 shown in FIG. 7B and an example of a manufacturing apparatus that can be used for step S45.
  • FIG. 11G is a diagram for explaining step S5 shown in FIG. 7A and an example of a manufacturing apparatus that can be used for step S5.
  • FIG. 11G is a diagram for explaining step S5 shown in FIG. 7A and an example of a manufacturing apparatus that can be used for step S5.
  • FIG. 12A is a diagram for explaining an example of a method for controlling a seal bar that can be used in steps S4 and S5.
  • FIG. 12B is a diagram for explaining a method of controlling the seal bar shown in FIG. 12A.
  • FIG. 13 is a diagram for explaining an example of a tension applying device that can be used in steps S2 and S4.
  • FIG. 14A is a diagram for explaining another example of a tension applying device that can be used in steps S2 and S4.
  • FIG. 14B is a plan view showing an inverted crown roll that may be used in the tensioning apparatus shown in FIG. 14A.
  • FIG. 15A is a diagram showing another example of a second bonding device that is a manufacturing apparatus that can be used in step S5.
  • FIG. 15B is a diagram for explaining the operation of the second joining device shown in FIG. 15A.
  • FIG. 16 is a diagram showing an example of a spot heater that can be used in step S4.
  • FIG. 17 is a diagram showing another example of a spot heater that can be used in step S4.
  • FIG. 18A is a diagram showing yet another example of a spot heater that can be used in step S4.
  • FIG. 18B is a diagram showing yet another example of a spot heater that can be used in step S4.
  • FIG. 19 is a diagram showing an example of a robot arm that holds a spot heater.
  • FIG. 20 is a diagram showing a modification of the joining device.
  • FIG. 21 is a diagram showing an example of an injection device that can be included in the manufacturing apparatus for the energy storage element.
  • FIG. 21 is a diagram showing an example of an injection device that can be included in the manufacturing apparatus for the energy storage element.
  • FIG. 22 is a diagram showing another example of a corner heater that can be used in step S4.
  • FIG. 23 is a diagram showing the corner heater shown in FIG.
  • FIG. 24 is a diagram showing an example of a corner sensor that can be used in step S4.
  • FIG. 25 is a diagram showing one embodiment of the corner heater shown in FIGS.
  • FIG. 26 shows another embodiment of the corner heater shown in FIGS.
  • FIG. 27 is a diagram showing yet another example of a corner heater that can be used in step S4.
  • FIG. 28 is a diagram showing yet another example of a corner heater that can be used in step S4.
  • FIG. 29 is a photograph showing pressure-sensitive paper used in an experiment to investigate the pressure applied to the exterior film 130 by the corner heaters.
  • FIG. 29 is a photograph showing pressure-sensitive paper used in an experiment to investigate the pressure applied to the exterior film 130 by the corner heaters.
  • FIG. 30 is a diagram showing another example of a seal bar that can be used in step S4.
  • FIG. 31 is a diagram showing yet another example of a seal bar that can be used in step S4.
  • FIG. 32 is a diagram showing a modified example of the manufacturing method and the bonding method.
  • FIG. 33 is a diagram showing a modified example of the manufacturing method and the joining method.
  • FIG. 34 is a diagram showing a modified example of the manufacturing method and the joining method.
  • FIG. 35 is a diagram showing a modified example of the manufacturing method and the joining method.
  • FIG. 36A is a side view showing step S3 shown in FIG. 7A and a modified example of a film holding unit that can be included in a manufacturing apparatus that can be used in step S3.
  • FIG. 36B is a top view of the film holder shown in FIG. 36A.
  • FIG. 36C is a front view showing the film holding portion shown in FIG. 36A.
  • FIG. 36D is a top view for explaining the operation of the film holding portion shown in FIGS. 36A to 36C.
  • FIG. 36E is a top view for explaining the operation of the film holding portion shown in FIGS. 36A to 36C.
  • FIG. 37A is a diagram for explaining step S42 shown in FIG. 7B and a modified example of a manufacturing apparatus that can be used in step S42.
  • FIG. 37B is a diagram for explaining step S42 shown in FIG. 7B and a modified example of a manufacturing apparatus that can be used in step S42.
  • FIG. 37C is a diagram for explaining step S43 shown in FIG.
  • FIG. 37D is a diagram for explaining step S44 shown in FIG. 7B and a modified example of a manufacturing apparatus that can be used in step S44.
  • FIG. 37E is a diagram for explaining step S45 shown in FIG. 7B and a modified example of a manufacturing apparatus that can be used for step S45.
  • FIG. 37F is a diagram for explaining step S5 shown in FIG. 7B and a modified example of a manufacturing apparatus that can be used in step S5.
  • FIG. 37G is a diagram for explaining a modified example of the film supplying step and the winding step in the manufacturing method shown in FIGS. 37A and 37B.
  • FIG. 38A is a diagram showing one specific example of the roller type heater shown in FIGS. 18A and 18B.
  • FIG. 38B is a diagram for explaining the operation of the roller-type heater shown in FIG. 38A.
  • FIG. 38C is a diagram for explaining the operation of the roller-type heater shown in FIG. 38A.
  • FIG. 39A is a side view showing a specific example of the manufacturing apparatus and the first processing apparatus.
  • FIG. 39B is a side view showing a specific example of the manufacturing apparatus and the first processing apparatus.
  • FIG. 39C is a side view showing a specific example of the manufacturing apparatus and the first processing apparatus.
  • FIG. 39D is a side view showing a specific example of the manufacturing apparatus and the first processing apparatus.
  • FIG. 39A is a side view showing a specific example of the manufacturing apparatus and the first processing apparatus.
  • FIG. 39B is a side view showing a specific example of the manufacturing apparatus and the first processing apparatus.
  • FIG. 39C is a side view showing a specific example
  • FIG. 39E is a side view showing a specific example of the manufacturing apparatus and the first processing apparatus.
  • FIG. 39F is a side view showing a specific example of the manufacturing apparatus and the first processing apparatus.
  • FIG. 39G is a side view showing a specific example of the manufacturing apparatus and the first processing apparatus.
  • FIG. 39H is a side view showing a specific example of the manufacturing apparatus and the first processing apparatus.
  • FIG. 39I is a side view showing a specific example of the manufacturing apparatus and the first processing apparatus.
  • FIG. 39J is a side view showing a specific example of the manufacturing apparatus and the first processing apparatus.
  • FIG. 39K is a side view showing a specific example of the manufacturing apparatus and the first processing apparatus.
  • FIG. 40A is a side view showing a specific example of the manufacturing apparatus and the second processing apparatus.
  • FIG. 40A is a side view showing a specific example of the manufacturing apparatus and the second processing apparatus.
  • FIG. 40A is a side view showing a specific example of the manufacturing apparatus and the
  • FIG. 40B is a side view showing a specific example of the manufacturing apparatus and the second processing apparatus.
  • FIG. 40C is a side view showing a specific example of the manufacturing apparatus and the second processing apparatus.
  • FIG. 40D is a side view showing a specific example of the manufacturing apparatus and the second processing apparatus.
  • FIG. 40E is a side view showing a specific example of the manufacturing apparatus and the second processing apparatus.
  • FIG. 40F is a side view showing a specific example of the manufacturing apparatus and the second processing apparatus.
  • FIG. 40G is a side view showing a specific example of the manufacturing apparatus and the second processing apparatus.
  • FIG. 40H is a side view showing a specific example of the manufacturing apparatus and the second processing apparatus.
  • An embodiment of the present disclosure relates to the following ⁇ 1> to ⁇ 96>.
  • an electrode body unit including a first lid body and a second lid body, an electrode body located between the first lid body and the second lid body, a first terminal electrically connected to the electrode body and connected to the first lid body, and a second terminal electrically connected to the electrode body and connected to the second lid body; and an exterior film wrapped around the electrode unit,
  • a manufacturing apparatus for manufacturing an energy storage element intermediate including an exterior body including the first lid body, the second lid body, and the exterior film, and the electrode body housed in the exterior body, a fixing device that fixes the first cover and the second cover of the electrode unit;
  • the electrode unit further includes a joining device that joins the exterior film, which is wrapped around the electrode unit so as to contact each of the side end surfaces of the first lid body and the second lid body, to the side end surfaces.
  • an electrode body unit including a first lid body and a second lid body, an electrode body located between the first lid body and the second lid body, a first terminal electrically connected to the electrode body and connected to the first lid body, and a second terminal electrically connected to the electrode body and connected to the second lid body; and an exterior film wrapped around the electrode unit
  • a manufacturing apparatus for manufacturing an energy storage element intermediate including an exterior body including the first lid body, the second lid body, and the exterior film, and the electrode body housed in the exterior body, a fixing device that fixes the first cover and the second cover of the electrode unit; a winding device that winds the exterior film around the electrode unit so as to come into contact with each side end surface of the first lid body and the second lid body; a joining device that joins the side end surface and the exterior film.
  • ⁇ 3> The manufacturing apparatus according to ⁇ 1> or ⁇ 2>, further comprising: a film supplying device that supplies the exterior film; and an electrode body unit supplying device that places the electrode body unit on the exterior film.
  • ⁇ 4> The manufacturing apparatus according to any one of ⁇ 1> to ⁇ 3>, further comprising a positioning device that positions the electrode unit on the exterior film.
  • the first cover, the electrode body, and the second cover are positioned in this order in a first direction;
  • the fixing device includes a fixing regulating part that contacts each of the first lid body and the second lid body from the outside in the first direction to regulate the outward movement, and a fixing drive part that presses each of the first lid body and the second lid body against the fixing regulating part.
  • the fixed restricting portion or the fixed driving portion is provided with one of a tapered convex portion and a tapered concave portion
  • the first lid body and the second lid body are provided with the other of the tapered protrusion and the tapered recess
  • the manufacturing apparatus according to ⁇ 5> wherein the first lid body and the second lid body are positioned in a direction non-parallel to the first direction by inserting the tapered convex portion into the tapered concave portion.
  • ⁇ 7> The manufacturing apparatus according to ⁇ 5> or ⁇ 6>, wherein the fixed drive unit includes an adsorption unit that adsorbs to the first lid body and the second lid body.
  • the first lid body and the second lid body each include a shaft-shaped protrusion protruding outward in the first direction, the shaft-shaped protrusion includes a notch that opens in a direction non-parallel to the first direction,
  • the fixed drive unit includes a claw portion that can be inserted into the notch.
  • the fixing device includes a clamper including a plurality of clamp pieces;
  • the manufacturing apparatus according to any one of ⁇ 5> to ⁇ 9>, wherein the plurality of clamp pieces are capable of approaching each other and being separated from each other.
  • a winding device that winds the exterior film around the electrode unit so as to contact each side end surface of the first lid body and the second lid body,
  • the winding device includes a tension applying device that applies tension to the exterior film,
  • the manufacturing apparatus according to any one of ⁇ 1> to ⁇ 10>, wherein the tension applying device includes an inverted crown roll and a nip roll that sandwiches the exterior film between the inverted crown roll and the nip roll.
  • ⁇ 12> a winding device that winds the exterior film around the electrode unit so as to contact each side end surface of the first lid body and the second lid body
  • the winding device includes a gripping unit that grips the exterior film, a surface monitoring unit that monitors a surface condition of the exterior film gripped by the gripping unit, and a winding controller that controls an operation of the gripping unit,
  • the manufacturing apparatus according to any one of ⁇ 1> to ⁇ 11>, wherein the winding controller controls the operation of the gripper based on the monitoring result of the surface monitoring unit.
  • ⁇ 13> a winding device that winds the exterior film around the electrode unit so as to contact each side end surface of the first lid body and the second lid body,
  • the winding device includes a pressing body that moves on the exterior film while pressing the exterior film toward the side end surface.
  • each of the first lid body and the second lid body includes a plurality of side end surfaces, A corner is formed between two adjacent side end faces,
  • the manufacturing apparatus according to any one of ⁇ 1> to ⁇ 13>, wherein the bonding device includes a spot heater that heats a portion of the exterior film located on the corner portion.
  • the spot heater includes one or more of a blower that emits heated gas, an infrared heater that emits infrared rays, a rotatable roller that includes a heated outer peripheral surface, and a corner heater that includes a heating surface that is bent to correspond to the corner.
  • each of the first lid body and the second lid body includes a plurality of side end surfaces, A corner portion is provided between two adjacent side end faces, the joining device includes a corner heater that heats a portion of the exterior film located on the corner, the corner heater includes a first heating surface, a second heating surface, and a heating protrusion;
  • the first heating surface heats at least a portion of the exterior film located on one of the two side end surfaces,
  • the first heating surface heats at least a portion of the exterior film located on the other side end surface of the two side end surfaces,
  • the manufacturing apparatus according to any one of ⁇ 1> to ⁇ 16>, wherein the heating protrusion is located between the first side end surface and the second side end surface.
  • the heating protrusion portion includes a linear protrusion extending in a direction parallel to both the first heating surface and the second heating surface.
  • the heating protrusion portion includes a plurality of heating protrusion portions arranged in a direction parallel to both the first heating surface and the second heating surface.
  • the bonding device further includes a corner sensor that detects a depression in the heating film formed by being pressed by the heating protrusion.
  • each of the first lid body and the second lid body includes a plurality of side end surfaces, A chamfered corner is provided between the two side end faces,
  • the bonding device includes a corner heater that heats the exterior film, the corner heater includes a corner heating surface that heats a portion of the exterior film located on the corner,
  • the manufacturing apparatus according to any one of ⁇ 1> to ⁇ 20>, wherein the radius of curvature ry of the corner heating surface and the radius of curvature rx of the corner satisfy ⁇ 0.5 mm ⁇ rx ⁇ ry ⁇ 0.5 mm.
  • ⁇ 22> The manufacturing apparatus according to ⁇ 21>, wherein a ratio of a radius of curvature of the corner heating surface to a radius of curvature of the corner is 0.50 or more and 1.50 or less.
  • each of the first lid body and the second lid body includes a plurality of side end surfaces, A chamfered corner is provided between the two side end faces,
  • the joining device includes a seal bar that heats the exterior film,
  • the manufacturing apparatus according to any one of ⁇ 1> to ⁇ 23>, wherein the seal bar includes a flat heating surface and a curved corner heating surface.
  • the corner heating surface includes a first corner heating surface and a second corner heating surface, The manufacturing apparatus described in ⁇ 24>, wherein the heating surface is located between the first corner heating surface and the second corner heating surface.
  • the seal bar includes a seal bar body and a contact portion fixed to the seal bar body,
  • ⁇ 27> The manufacturing apparatus according to any one of ⁇ 24> to ⁇ 26>, wherein the flat heating surface and the corner heating surface are made of an elastic material.
  • ⁇ 28> The manufacturing apparatus according to any one of ⁇ 24> to ⁇ 27>, wherein the radius of curvature ry of the corner heating surface and the radius of curvature rx of the corner satisfy ⁇ 0.5 mm ⁇ rx ⁇ ry ⁇ 0.5 mm.
  • ⁇ 29> The manufacturing apparatus according to ⁇ 28>, wherein a ratio of a radius of curvature of the corner heating surface to a radius of curvature of the corner is 0.50 or more and 1.50 or less.
  • a second joining device that joins a pair of extending portions of the exterior film wrapped around the electrode unit, the extending portions extending from the electrode unit and facing each other,
  • the manufacturing apparatus according to any one of ⁇ 1> to ⁇ 29>, wherein one or both of the bonding device and the second bonding device include a heater including a rotatable roller including a heated outer circumferential surface, and a robot arm holding the heater.
  • a second joining device that joins a pair of extending portions of the exterior film wrapped around the electrode unit, the extending portions extending from the electrode unit and facing each other,
  • One or both of the joining device and the second joining device includes a seal bar that heats the exterior film and a bar drive unit that moves the seal bar toward the exterior film,
  • the manufacturing apparatus according to any one of ⁇ 1> to ⁇ 30>, wherein the bar driving unit moves the sealing bar to a preset pressing amount.
  • ⁇ 32> The manufacturing apparatus according to any one of ⁇ 1> to ⁇ 31>, wherein the bonding device includes a lid heater that heats the first lid and the second lid.
  • ⁇ 33> The manufacturing apparatus according to any one of ⁇ 1> to ⁇ 32>, further comprising a second joining device that joins a pair of extending portions of the exterior film wrapped around the electrode unit, the extending portions extending from the electrode unit and facing each other.
  • the second joining device includes a receiver that supports a pair of extension portions, and a seal bar that presses the pair of extension portions toward the receiver while applying heat thereto,
  • the first cover, the electrode body, and the second cover are positioned in this order in a first direction;
  • the side end surfaces of the first lid body and the second lid body each include a first side end surface and a fourth side end surface extending in a second direction non-parallel to the first direction, and a second side end surface and a third side end surface extending in a third direction non-parallel to both the first direction and the second direction,
  • the joining device includes a first seal bar that contacts a portion of the exterior film located on the first side end surface and heats the exterior film while pressing it between the first side end surface and the first seal bar.
  • ⁇ 36> a winding device that winds the exterior film around the electrode unit so as to contact each side end surface of the first lid body and the second lid body,
  • the winding device includes a winding auxiliary body that adsorbs the side end surface and restricts movement of the electrode body unit when the exterior film is wound around the electrode body unit.
  • a winding device that winds the exterior film around the electrode unit so as to contact each side end surface of the first lid body and the second lid body, the first cover, the electrode body, and the second cover are positioned in this order in a first direction;
  • the side end surfaces of the first lid body and the second lid body each include a first side end surface and a fourth side end surface extending in a second direction non-parallel to the first direction, and a second side end surface and a third side end surface extending in a third direction non-parallel to both the first direction and the second direction
  • the winding device includes a winding auxiliary body including a base surface in contact with the fourth side end surface, a first auxiliary surface connected to the base surface and located on an extension of the second side end surface, and a second auxiliary surface connected to the base surface and located on an extension of the third side end surface.
  • the first cover, the electrode body, and the second cover are positioned in this order in a first direction;
  • the side end surfaces of the first lid body and the second lid body each include a first side end surface and a fourth side end surface extending in a second direction non-parallel to the first direction, and a second side end surface and a third side end surface extending in a third direction non-parallel to both the first direction and the second direction,
  • the joining device includes a second seal bar that contacts a portion of the exterior film located on the second side end surface and heats the exterior film while pressing it between the second side end surface and the third seal bar that contacts a portion of the exterior film located on the third side end surface and heats the exterior film while pressing it between the third side end surface and the third side end surface.
  • ⁇ 41> a winding device that winds the exterior film around the electrode unit so as to contact each side end surface of the first lid body and the second lid body,
  • the winding device includes a winding support that contacts the exterior film located on the side end surface and restricts movement of the electrode unit when the exterior film is wound around the electrode unit.
  • ⁇ 42> a winding device that winds the exterior film around the electrode unit so as to contact each side end surface of the first lid body and the second lid body, the first cover, the electrode body, and the second cover are positioned in this order in a first direction;
  • the side end surfaces of the first lid body and the second lid body each include a first side end surface and a fourth side end surface extending in a second direction non-parallel to the first direction, and a second side end surface and a third side end surface extending in a third direction non-parallel to both the first direction and the second direction
  • the winding device includes a winding support including a contact surface that contacts the exterior film located on the second side end surface, and a support surface that is connected to the contact surface and is located on an extension of the fourth side end surface.
  • the winding device disposes, on the support surface, a pair of extension portions of the exterior film wound around the electrode unit, the extension portions extending from the electrode unit and facing each other;
  • the joining device includes a fourth seal bar that, with the pair of extension portions positioned on the support surface, contacts a portion of the exterior film located on the fourth side end surface and heats the exterior film while pressing it between the fourth side end surface and the fourth side end surface.
  • ⁇ 44> a second joining device that joins a pair of extending portions of the exterior film wrapped around the electrode unit, the extending portions extending from the electrode unit and facing each other,
  • the second joining device includes a seal bar that heats the pair of extension portions arranged on the support surface while pressing them between the support surface and the seal bar.
  • ⁇ 45> The manufacturing apparatus according to any one of ⁇ 42> to ⁇ 44>, wherein the winding support adsorbs the exterior film on the support surface.
  • ⁇ 46> The manufacturing apparatus according to any one of ⁇ 42> to ⁇ 45>, wherein the winding device includes an auxiliary winding support that contacts the exterior film located on the third side end surface.
  • an electrode body unit including a first lid body and a second lid body, an electrode body located between the first lid body and the second lid body, a first terminal electrically connected to the electrode body and connected to the first lid body, and a second terminal electrically connected to the electrode body and connected to the second lid body; and an exterior film wrapped around the electrode unit
  • an electrode body unit including a first lid body and a second lid body, an electrode body located between the first lid body and the second lid body, a first terminal electrically connected to the electrode body and connected to the first lid body, and a second terminal electrically connected to the electrode body and connected to the second lid body; and an exterior film wrapped around the electrode unit
  • ⁇ 50> The manufacturing method according to ⁇ 48> or ⁇ 49>, further comprising a step of joining a pair of extending portions of the exterior film wrapped around the electrode unit, the extending portions extending from the electrode unit and facing each other.
  • ⁇ 51> A step of producing an electric storage element intermediate by the production method according to any one of ⁇ 48> to ⁇ 50>; injecting an electrolyte into the energy storage element intermediate.
  • an electrode body unit including a first lid body and a second lid body, an electrode body located between the first lid body and the second lid body, a first terminal electrically connected to the electrode body and connected to the first lid body, and a second terminal electrically connected to the electrode body and connected to the second lid body; and an exterior film wrapped around the electrode unit
  • a manufacturing apparatus for manufacturing an energy storage element intermediate including an exterior body including the first lid body, the second lid body, and the exterior film, and the electrode body housed in the exterior body, a joining device that joins the exterior film that is wrapped around the electrode unit so as to contact the side end surface of the first lid body and the side end surface of the second lid body,
  • the bonding device includes a roller-type heater, the roller-type heater includes a roller including a heated outer peripheral surface, a tip portion that rotatably holds the roller, a base portion that holds the tip portion, and a pressure applying portion located between the base portion and the tip portion, the tip end portion is movable relative to the base end portion in a direction non-
  • an electrode body unit including a first lid body and a second lid body, an electrode body located between the first lid body and the second lid body, a first terminal electrically connected to the electrode body and connected to the first lid body, and a second terminal electrically connected to the electrode body and connected to the second lid body; and an exterior film wrapped around the electrode unit
  • a manufacturing apparatus for manufacturing an energy storage element intermediate including an exterior body including the first lid body, the second lid body, and the exterior film, and the electrode body housed in the exterior body, a winding device that winds the exterior film around the electrode unit so as to contact a side end surface of the first lid body and a side end surface of the second lid body; a joining device for joining the side end surface and the exterior film
  • the bonding device includes a roller-type heater, the roller-type heater includes a roller including a heated outer peripheral surface, a tip portion that rotatably holds the roller, a base portion that holds the tip portion, and a pressure unit located between the base portion and the tip portion, the tip end portion is mov
  • an electrode body unit including a first lid body and a second lid body, an electrode body located between the first lid body and the second lid body, a first terminal electrically connected to the electrode body and connected to the first lid body, and a second terminal electrically connected to the electrode body and connected to the second lid body; and an exterior film wrapped around the electrode unit
  • a manufacturing apparatus for manufacturing an energy storage element intermediate including an exterior body including the first lid body, the second lid body, and the exterior film, and the electrode body housed in the exterior body, a joining device that joins the exterior film wrapped around the electrode unit so as to come into contact with the side end surface of the first lid body and the side end surface of the second lid body, and the side end surface; a second joining device that joins a pair of extending portions of the exterior film wrapped around the electrode unit, the extending portions extending from the electrode unit and facing each other, At least one of the bonding device and the second bonding device includes a roller-type heater, the roller-type heater includes a roller including a heated outer peripheral surface, a
  • an electrode body unit including a first lid body and a second lid body, an electrode body located between the first lid body and the second lid body, a first terminal electrically connected to the electrode body and connected to the first lid body, and a second terminal electrically connected to the electrode body and connected to the second lid body; and an exterior film wrapped around the electrode unit
  • a manufacturing apparatus for manufacturing an energy storage element intermediate including an exterior body including the first lid body, the second lid body, and the exterior film, and the electrode body housed in the exterior body, a winding device that winds the exterior film around the electrode unit so as to contact a side end surface of the first lid body and a side end surface of the second lid body; a joining device for joining the side end surface and the exterior film; a second joining device that joins a pair of extending portions of the exterior film wrapped around the electrode unit, the extending portions extending from the electrode unit and facing each other, At least one of the bonding device and the second bonding device includes a roller-type heater, the roller-type heater includes a roller including a roller including
  • ⁇ 56> The manufacturing apparatus according to any one of ⁇ 52> to ⁇ 55>, wherein the deformation resistance of the pressurizing part is 0.10 N/mm or more and 1.0 N/mm or less.
  • ⁇ 57> The manufacturing apparatus according to any one of ⁇ 52> to ⁇ 56>, wherein the pressure unit includes a spring.
  • a winding device that winds the exterior film around the electrode unit so as to contact a side end surface of the first lid body and a side end surface of the second lid body; the first cover, the electrode body, and the second cover are positioned in this order in a first direction; the side end surfaces of the first lid body and the second lid body each include a first side end surface and a fourth side end surface extending in a second direction non-parallel to the first direction, and a second side end surface and a third side end surface extending in a third direction non-parallel to both the first direction and the second direction,
  • the winding device comprises: a first film holding portion that holds a portion of the exterior film that is in contact with the second side end surface, the first side end surface, and the third side end surface and extends from the second side end surface; a second film holding portion that holds a portion of the exterior film that is in contact with the second side end surface, the first side end surface, and the third side end surface and extends from the third side end surface; a first
  • an electrode body unit including a first lid body and a second lid body, an electrode body located between the first lid body and the second lid body, a first terminal electrically connected to the electrode body and connected to the first lid body, and a second terminal electrically connected to the electrode body and connected to the second lid body; and an exterior film wrapped around the electrode unit
  • a manufacturing apparatus for manufacturing an energy storage element intermediate including an exterior body including the first lid body, the second lid body, and the exterior film, and the electrode body housed in the exterior body, a winding device that winds the exterior film around the electrode unit so as to contact a side end surface of the first lid body and a side end surface of the second lid body; a joining device for joining the side end surface and the exterior film, the first cover, the electrode body, and the second cover are positioned in this order in a first direction; the side end surfaces of the first lid body and the second lid body each include a first side end surface and a fourth side end surface extending in a second direction non-parallel to the first direction, and a second
  • ⁇ 60> A manufacturing apparatus described in ⁇ 58> or ⁇ 59>, wherein when the first pressing portion and the second pressing portion press the exterior film, the distance along the second direction between the first film holding portion and the second film holding portion is greater than the length of the fourth side end surface along the second direction.
  • ⁇ 61> The manufacturing device described in any one of ⁇ 58> to ⁇ 60>, wherein when the first pressing portion and the second pressing portion are pressing the exterior film, the exterior film spreads parallel to the first direction and the second direction between the first film holding portion and the first pressing portion, and between the second film holding portion and the second pressing portion.
  • a fixing device for fixing the first cover and the second cover of the electrode unit, the first cover, the electrode body, and the second cover are positioned in this order in a first direction;
  • Each of the first and second lids includes a recess on a surface that is an outer side in the first direction, the fixing device has a chuck body that is inserted into the recess from the outside in the first direction,
  • the manufacturing apparatus according to any one of ⁇ 52> to ⁇ 61>, wherein the chuck body holds each lid body by expanding its width in the recess in a direction perpendicular to the first direction.
  • an electrode body unit including a first lid body and a second lid body, an electrode body located between the first lid body and the second lid body, a first terminal electrically connected to the electrode body and connected to the first lid body, and a second terminal electrically connected to the electrode body and connected to the second lid body; and an exterior film wrapped around the electrode unit
  • a manufacturing apparatus for manufacturing an energy storage element intermediate including an exterior body including the first lid body, the second lid body, and the exterior film, and the electrode body housed in the exterior body, a fixing device that fixes the first cover and the second cover of the electrode unit; a joining device that joins the exterior film that is wrapped around the electrode unit so as to contact the side end surface of the first lid body and the side end surface of the second lid body, the first cover, the electrode body, and the second cover are positioned in this order in a first direction;
  • Each of the first and second lids includes a recess on a surface that is an outer side in the first direction, the fixing device has a chuck body that is inserted into the reces
  • an electrode body unit including a first lid body and a second lid body, an electrode body located between the first lid body and the second lid body, a first terminal electrically connected to the electrode body and connected to the first lid body, and a second terminal electrically connected to the electrode body and connected to the second lid body; and an exterior film wrapped around the electrode unit
  • a manufacturing apparatus for manufacturing an energy storage element intermediate including an exterior body including the first lid body, the second lid body, and the exterior film, and the electrode body housed in the exterior body, a fixing device that fixes the first cover and the second cover of the electrode unit; a winding device that winds the exterior film around the electrode unit so as to contact a side end surface of the first lid body and a side end surface of the second lid body; a joining device for joining the side end surface and the exterior film, the first cover, the electrode body, and the second cover are positioned in this order in a first direction;
  • Each of the first and second lids includes a recess on a surface that is an outer side in the first direction, the fixing device has
  • the recess includes a plurality of recesses on the surface of each of the first and second lids
  • the fixing device includes a plurality of chuck bodies inserted into the plurality of recesses of each of the lid bodies
  • the manufacturing apparatus according to any one of ⁇ 62> to ⁇ 64>, wherein each of the plurality of chuck bodies holds each lid body by expanding its width in a direction perpendicular to the first direction.
  • the chuck body includes a plurality of widening pieces inserted into the recesses, and a widening piece holding portion that operably holds the plurality of widening pieces, A manufacturing apparatus described in any one of ⁇ 62> to ⁇ 65>, wherein the width of the chuck body in a direction perpendicular to the first direction changes when the multiple expansion pieces move relative to the expansion piece holding portion.
  • a film supplying device for supplying the exterior film; a winding device that winds the exterior film around the electrode unit so as to contact a side end surface of the first lid body and a side end surface of the second lid body, At least one of the film supply device and the winding device includes a film holding portion that holds the exterior film, the film holding unit includes a first roll and a second roll that holds the exterior film between the first roll and a second roll,
  • the manufacturing apparatus according to any one of ⁇ 52> to ⁇ 66>, wherein the first roll and the second roll are rotatable about an adjustment axis that is not parallel to a rotation axis of the first roll while holding the exterior film.
  • an electrode body unit including a first lid body and a second lid body, an electrode body located between the first lid body and the second lid body, a first terminal electrically connected to the electrode body and connected to the first lid body, and a second terminal electrically connected to the electrode body and connected to the second lid body; and an exterior film wrapped around the electrode unit
  • a manufacturing apparatus for manufacturing an energy storage element intermediate including an exterior body including the first lid body, the second lid body, and the exterior film, and the electrode body housed in the exterior body, a film supplying device for supplying the exterior film; a winding device that winds the exterior film around the electrode unit so as to contact a side end surface of the first lid body and a side end surface of the second lid body; a joining device for joining the side end surface and the exterior film, At least one of the film supply device and the winding device includes a film holding portion that holds the exterior film, the film holding unit includes a first roll and a second roll that holds the exterior film between the first roll and a second roll, A manufacturing apparatus, wherein the
  • the film holding section includes a roll holding section that rotatably holds the first roll and the second roll, and a holding base section that rotatably holds the roll holding section around the adjustment axis.
  • ⁇ 70> The manufacturing apparatus according to any one of ⁇ 67> to ⁇ 69>, wherein the film holding unit is movable in a movement direction non-parallel to both the rotation axis and the adjustment axis.
  • At least one of the film supply device and the winding device includes a guide rail extending in a direction of movement non-parallel to both the rotation axis and the adjustment axis;
  • the manufacturing apparatus according to any one of ⁇ 67> to ⁇ 70>, wherein the film holding unit is movable along a guide rail.
  • At least one of the film supply device and the winding device includes a holding and driving unit that moves the film holding unit in a movement direction non-parallel to both the rotation axis and the adjustment axis.
  • ⁇ 73> The manufacturing apparatus according to any one of ⁇ 67> to ⁇ 72>, wherein the adjustment axis is parallel to a normal direction of the holding film supplied to the film holding section.
  • ⁇ 74> The manufacturing apparatus according to any one of ⁇ 67> to ⁇ 73>, wherein the adjustment axis is parallel to a normal direction to a portion of the exterior film that is located upstream of the first roll and the second roll.
  • ⁇ 75> An apparatus for producing an electric storage element intermediate according to any one of ⁇ 52> to ⁇ 74>, an injection device that injects an electrolyte into the energy storage element intermediate.
  • ⁇ 76> A method for producing the electric storage element intermediate by using the production apparatus according to any one of ⁇ 52> to ⁇ 58>, providing the exterior film; a step of joining the exterior film, which is wrapped around the electrode unit so as to contact each of the side end surfaces of the first lid body and the second lid body, to the side end surfaces using the roller-type heater.
  • ⁇ 77> A method for producing the electric storage element intermediate by using the production apparatus according to any one of ⁇ 52> to ⁇ 58>, providing the exterior film; a step of wrapping the exterior film around the electrode unit so as to contact each of the side end surfaces of the first lid body and the second lid body, and joining the side end surfaces and the exterior film using the roller-type heater.
  • the manufacturing method includes using the roller heater to join the side end surfaces and the exterior film and/or to join the pair of extended portions.
  • ⁇ 79> A method for producing the electric storage element intermediate by using the production apparatus according to any one of ⁇ 58> to ⁇ 62>, providing the exterior film; using the winding device to wind the exterior film around the electrode unit so that it contacts each of the side end surfaces of the first lid body and the second lid body, and using the joining device to join the side end surfaces and the exterior film.
  • ⁇ 80> A method for producing the electric storage element intermediate by using the production apparatus according to any one of ⁇ 62> to ⁇ 67>, fixing the first lid and the second lid of the electrode unit; a step of joining the exterior film, which is wrapped around the electrode unit so as to contact each of the side end surfaces of the first lid body and the second lid body, to the side end surfaces.
  • ⁇ 81> A method for producing the electric storage element intermediate by using the production apparatus according to any one of ⁇ 62> to ⁇ 67>, fixing the first lid and the second lid of the electrode unit; a step of wrapping the exterior film around the electrode unit so as to contact each of the side end surfaces of the first lid body and the second lid body, and joining the side end surfaces and the exterior film.
  • ⁇ 82> A method for producing the electric storage element intermediate by using the production apparatus according to any one of ⁇ 67> to ⁇ 74>, supplying the exterior film using the film supply device; using the winding device to wind the exterior film around the electrode unit so that it contacts each of the side end surfaces of the first lid body and the second lid body, and using the joining device to join the side end surfaces and the exterior film.
  • ⁇ 83> A step of producing an electric storage element intermediate by the production method according to any one of ⁇ 52> to ⁇ 82>; injecting an electrolyte into the energy storage element intermediate.
  • a lid that closes an opening of a cylindrical exterior film and constitutes an exterior body of an energy storage element together with the exterior film
  • the present invention includes a core material and a surrounding member located around the core material, The surrounding member constitutes a side end surface of the lid body that is joined to the exterior film.
  • ⁇ 88> The lid according to any one of ⁇ 84> to ⁇ 87>, wherein the core material contains a metal.
  • the lid body according to any one of ⁇ 84> to ⁇ 90>, wherein the surrounding member includes at least one of a molded product formed around the core material, a frame body fitted around the core material, or a film wrapped around the core material.
  • a lid that closes an opening of a cylindrical exterior film and constitutes an exterior body of an energy storage element together with the exterior film
  • the cylindrical exterior film has an inner main surface facing the internal space thereof, an outer main surface facing the inner main surface, and a side end surface connecting the inner main surface and the outer main surface,
  • the outer main surface includes a tapered protrusion and/or a tapered recess.
  • ⁇ 94> A lid according to any one of ⁇ 84> to ⁇ 93>, and the exterior film wrapped around the lid.
  • An exterior body including the lid body according to any one of ⁇ 84> to ⁇ 93> and the exterior film wrapped around the lid body; and an electrode assembly housed in the outer casing.
  • ⁇ 96> An exterior body including the lid body according to any one of ⁇ 84> to ⁇ 93> and the exterior film wrapped around the lid body; An electrode assembly housed in the outer casing.
  • the numerical range may be formed by combining any one upper limit candidate with any one lower limit candidate.
  • Parameter B may be A1 or more, A2 or more, or A3 or more.
  • Parameter B may be A4 or less, A5 or less, or A6 or less.”
  • the numerical range of parameter B may be A1 or more and A4 or less, A1 or more and A5 or less, A1 or more and A6 or less, A2 or more and A4 or less, A2 or more and A5 or less, A2 or more and A6 or less, A3 or more and A4 or less, A3 or more and A5 or less, or A3 or more and A6 or less.
  • FIG. 1 shows a common first direction D1, second direction D2, and third direction D3 with arrows having common symbols.
  • the tip of the arrow is the first side of each direction.
  • the side opposite the tip of the arrow is the second side of each direction.
  • An arrow pointing toward the front of the drawing in a direction perpendicular to the paper surface is shown by a symbol with a dot in a circle, as shown in Figure 3B, for example.
  • An arrow pointing toward the back of the drawing in a direction perpendicular to the paper surface is shown by a symbol with an x in a circle, as shown in Figure 21, for example.
  • the manufacturing apparatus and method according to the present embodiment are for manufacturing the energy storage element intermediate 110.
  • the electrode unit 111 and the exterior film 130 are used to manufacture the energy storage element intermediate 110.
  • the electrode unit 111 includes the electrode 115, the terminals 117A and 117B, and the lids 140A and 140B.
  • the manufacturing apparatus and method according to the present embodiment are devised to stably join the side end faces G1 of the lids 140A and 140B to the exterior film 130 by the circumferential seal portion S1.
  • the energy storage element intermediate 110 is used to manufacture the energy storage element 100.
  • the manufacturing apparatus and method according to the present embodiment are also for manufacturing the energy storage element 100.
  • the energy storage element 100 and the energy storage element intermediate 110 will be described with reference to the specific example shown in the drawings. After that, the manufacturing apparatus and manufacturing method for the energy storage element intermediate 110 will be described with reference to the specific example shown in the drawings.
  • FIGS. 1 and 2 are diagrams showing a specific example of an energy storage element and an energy storage element intermediate.
  • the illustrated energy storage element 100 and energy storage element intermediate 110 are the objects of manufacture using the manufacturing apparatus and manufacturing method according to this embodiment.
  • FIG. 1 shows a specific example of an energy storage element 100.
  • FIG. 2 shows a specific example of an energy storage element intermediate 110 that can be used in the manufacture of the energy storage element 100 shown in FIG. 1.
  • FIGS. 3A to 5P are diagrams showing examples of components that can be included in the energy storage element 100 and energy storage element intermediate 110 shown in FIGS. 1 and 2.
  • the energy storage element 100 and the energy storage element intermediate body 110 include an electrode body 115, a terminal 117, and an exterior body 120.
  • the terminal 117 is electrically connected to the electrode body 115.
  • the exterior body 120 is a sealed container.
  • the exterior body 120 houses the electrode body 115.
  • the terminal 117 may penetrate the exterior body 120.
  • the terminal 117 may extend from within the housing space of the exterior body 120 to the outside. The space between the exterior body 120 and the terminal 117 that penetrates the exterior body 120 is sealed.
  • the electrode body 115 may be a storage element capable of storing electricity.
  • the electrode body 115 may include positive and negative electrode plates.
  • the positive and negative electrode plates may be stacked alternately. In the illustrated example, the positive and negative electrode plates may be stacked in the third direction D3.
  • An insulating separator may be disposed between the positive and negative electrode plates.
  • the outermost layer of the electrode body 115 does not have to be a positive electrode plate or a negative electrode plate.
  • the outermost layer of the electrode body 115 may be a protective tape or a separator.
  • the protective tape or a separator can prevent unintended short circuits between the electrode body 115 and the outer casing 120.
  • the outermost layer of the electrode body 115 is the layer located on the first side in the third direction D3 and the layer located on the second side in the third direction D3.
  • Examples of the power storage element that constitutes the electrode body 115 include a lithium ion battery, a capacitor, an all-solid-state battery, a semi-solid battery, a quasi-solid battery, a polymer battery, an all-resin battery, a lead-acid battery, a nickel-metal hydride battery, a nickel-cadmium battery, a nickel-iron battery, a nickel-zinc battery, a silver oxide-zinc battery, a metal-air battery, and a polyvalent cation battery.
  • the electrode body 115 may be rectangular. That is, the electrode body 115 may be a perfect rectangular prism, or may have a shape that can be considered a rectangular prism by modifying the shape of a portion of the outer surface. The electrode body 115 may also have a rectangular prism shape with chamfered corners.
  • the electrode body 115 may be in the shape of a polygonal prism. That is, the electrode body 115 may be a perfect polygonal prism, or may have a shape that can be considered a polygonal prism by modifying the shape of part of the outer surface. The electrode body 115 may be in the shape of a polygonal prism with the corners chamfered.
  • the electrode body 115 may be cylindrical. That is, the electrode body 115 may be a perfect cylinder, or may have a shape that can be considered cylindrical by modifying a portion of the shape of the outer surface.
  • the electrode body 115 may have a cylindrical shape with chamfered corners.
  • the terminal 117 is electrically connected to the electrode body 115.
  • the terminal 117 may be electrode-connected to a positive or negative electrode plate included in the electrode body.
  • the terminal 117 may be in direct electrode contact with a positive or negative electrode plate included in the electrode body.
  • the terminal 117 may be electrode-contacted with a positive or negative electrode plate included in the electrode body via a conductive member.
  • the terminal 117 may be a metal terminal used for inputting and outputting power to and from the electrode body 115 (e.g., charging and discharging).
  • the terminal 117 does not have to be fixed to the electrode body 115.
  • the terminal 117 may move relative to the electrode body 115 while maintaining electrical connection with the electrode body 115.
  • the terminal 117 may penetrate the exterior body 120.
  • the terminal 117 may protrude from the cover 140.
  • the terminal 117 may extend from within the storage space of the exterior body 120 to the outside.
  • the space between the exterior body 120 and the terminal 117 penetrating the exterior body 120 is sealed.
  • the terminal 117 may not protrude from the exterior body 120.
  • the terminal 117 may not protrude from the exterior film 130 or the lid body 140.
  • the terminal 117 may not penetrate the exterior body 120 or the lid body 140.
  • a conductive lid body 140 may be used.
  • the conductive lid body 140 may function as a terminal when inputting and outputting power to and from the electrode body 115 (e.g., charging and discharging).
  • the material constituting the terminal 117 may be a metal.
  • metal materials constituting the terminal 117 include aluminum, nickel, copper, and alloys thereof.
  • the terminal 117 electrically connected to the positive electrode may be aluminum or an aluminum alloy.
  • the terminal 117 electrically connected to the negative electrode may be copper, nickel, and alloys thereof.
  • the terminals 117 of the energy storage element 100 and the energy storage element intermediate body 110 include a first terminal 117A and a second terminal 117B.
  • the first terminal 117A and the second terminal 117B are electrically connected to the electrode body 115.
  • the first terminal 117A and the second terminal 117B may function as terminals when the electrode body 115 is charged or discharged.
  • the first terminal 117A may be electrically connected to one of the positive and negative plates included in the electrode body 115.
  • the second terminal 117B may be electrically connected to the other of the positive and negative plates included in the electrode body 115.
  • the first terminal 117A may be a positive terminal and the second terminal 117B may be a negative terminal.
  • the first terminal 117A may be a negative terminal and the second terminal 117B may be a positive terminal.
  • the first terminal 117A extends from the electrode body 115 toward a first side in the first direction D1.
  • the second terminal 117B extends from the electrode body 115 toward a second side in the first direction D1.
  • the first terminal 117A and the second terminal 117B may have the same configuration and be arranged symmetrically.
  • terminal 117 may refer to both the first terminal 117A and the second terminal 117B.
  • the exterior body 120 is a sealed container in the state of the energy storage element 100.
  • the exterior body 120 seals the electrode body 115.
  • the exterior body 120 includes an exterior film 130 and a lid body 140.
  • the exterior film 130 may be cylindrical with openings K1 and K2.
  • the exterior film 130 may wrap the electrode body 115 so as to have openings K1 and K2.
  • the exterior film 130 is wound around the electrode body 115 to form the openings K1 and K2.
  • the lid body 140 closes the openings K1 and K2 of the cylindrical exterior film 130.
  • the gap between the lid body 140 and the exterior film 130 is sealed.
  • the exterior film 130 is wound around an electrode body unit 111 (see Figures 3A and 3B) including the electrode body 115 and the lid body 140, and is joined to the lid body 140.
  • a storage section in the exterior film to house the electrode body by cold forming.
  • the electrode body 115 is wrapped in a cylindrical exterior film 130.
  • the electrode body 115 may be wrapped by wrapping the exterior film 130 around the electrode body 115. According to this manufacturing method, the exterior film 130 can be easily accommodated in the exterior body 120 regardless of the thickness of the electrode body 115.
  • the dead space between the electrode body 115 and the exterior body 120 In order to improve the volumetric energy density of the energy storage element 100, it is preferable to reduce the dead space between the electrode body 115 and the exterior body 120. It is preferable that the exterior body 120 is in contact with the outer surface of the electrode body 115. In order to maximize the battery performance of an all-solid-state battery, it is effective to apply high pressure uniformly from the outer surface of the battery. From this perspective, it is preferable to eliminate the space between the electrode body 115 and the exterior body 120. By wrapping the exterior film 130 around the electrode body 115, the space between the exterior body 120 and the electrode body 115 can be reduced.
  • the exterior film 130 may be flexible and easy to bend.
  • the exterior film 130 may include a resin film.
  • the exterior film 130 may be heat-sealable. Heat sealing makes it easy to seal between the exterior film 130 and the lid 140.
  • FIG. 4A is a cross-sectional view showing an example of the exterior film 130.
  • FIG. 4A is a cross-sectional view taken along line A-A in FIG. 4B.
  • the exterior film 130 may be a laminate.
  • the exterior film 130 may include a base layer L1, a barrier layer L2, and a heat-sealable resin layer L3 in this order.
  • the base layer L1 may be the outermost layer
  • the heat-sealable resin layer L3 may be the innermost layer.
  • the exterior film 130 may include the heat-sealable resin layer L3 in the outermost layer.
  • the exterior film 130 may include the heat-sealable resin layer L3 in both the innermost layer and the outermost layer.
  • the exterior film 130 may include layers other than the base layer L1, the barrier layer L2, and the heat-sealable resin layer L3.
  • the exterior film 130 may not include one or more of the base layer L1, the barrier layer L2, and the heat-sealable resin layer L3.
  • the substrate layer L1 may provide heat resistance to the exterior film 130.
  • the substrate layer L1 may suppress the occurrence of defects such as pinholes that may occur during processing or distribution.
  • Such a substrate layer L1 may include at least one of a polyester resin layer and a polyamide resin layer.
  • the substrate layer L1 may include both a polyester resin layer and a polyamide resin layer.
  • a laminate structure may be used in which the polyester resin layer is the first layer and constitutes the outermost layer, and the polyamide resin layer constitutes the second layer on the barrier layer L2 side.
  • the base layer L1 which includes one or more of a polyester resin layer and a polyamide resin layer, can protect the barrier layer L2 during processing of the exterior film 130.
  • the base layer L1 which includes one or more of a polyester resin layer and a polyamide resin layer, can suppress breakage of the exterior film 130.
  • the polyester resin layer may be a stretched polyester resin layer that has been stretched, or a non-stretched polyester resin layer that has not been stretched.
  • the polyamide resin layer may be a stretched polyamide resin layer that has been stretched, or a non-stretched polyamide resin layer that has not been stretched. If the stretched polyester resin layer and the stretched polyamide resin layer are biaxially stretched, the tensile elongation of the exterior film 130 can be increased.
  • the stretched polyester resin layer may be a biaxially oriented polyethylene terephthalate (PET) film.
  • the stretched polyamide resin layer may be a biaxially oriented nylon (ONy) film.
  • the biaxially oriented polyethylene terephthalate film and the biaxially oriented nylon film can improve the puncture strength and impact strength of the exterior film 130.
  • the thickness of the substrate layer L1 may be 5 ⁇ m or more and 300 ⁇ m or less, or 5 ⁇ m or more and 150 ⁇ m or less, from the viewpoint of film strength.
  • the barrier layer L2 may be joined to the base layer L1 using an adhesive layer L4.
  • the barrier layer L2 included in the exterior film 130 may be aluminum foil.
  • Aluminum foil is excellent in terms of moisture resistance, processability such as extensibility, and cost.
  • the aluminum foil may contain iron from the viewpoint of packaging suitability and pinhole resistance when packaging the electrode body 115.
  • the iron content in the aluminum foil may be 0.5% by mass or more and 5.0% by mass or less, or 0.7% by mass or more and 2.0% by mass or less.
  • the barrier layer L2 may include a metal foil, a vapor deposition film, and a resin layer having barrier properties. Examples of metal foils include aluminum alloys, stainless steel, titanium steel, steel plates, and recycled materials thereof.
  • the thickness of the barrier layer L2 may be 9 ⁇ m or more and 200 ⁇ m or less, or 30 ⁇ m or more and 85 ⁇ m or less, from the viewpoints of barrier properties, pinhole resistance, and packaging suitability.
  • the thickness of the barrier layer L2 9 ⁇ m or more, breakage of the exterior film 130 can be suppressed even if tension is applied to the exterior film 130 when wrapping the exterior film 130 around the electrode unit 111.
  • the thickness of the barrier layer L2 200 ⁇ m or less the increase in mass of the exterior film 130 can be reduced, and a decrease in the weight energy density of the energy storage element 100 can be suppressed.
  • the barrier layer L2 may include aluminum foil and a corrosion-resistant coating.
  • the aluminum foil may be located between the corrosion-resistant coating and the base layer L1.
  • the barrier layer L2 may include a corrosion-resistant coating, aluminum foil, and a corrosion-resistant coating, in that order.
  • the corrosion-resistant coating may form the surface of the barrier layer L2.
  • the corrosion-resistant coating can suppress dissolution and corrosion of the barrier layer L2.
  • the corrosion-resistant film is a layer that imparts corrosion resistance to the barrier layer L2.
  • the corrosion resistance may be acid resistance or alkali resistance.
  • the corrosion-resistant film may be a thin film formed by performing a corrosion prevention treatment on the surface of the barrier layer L2. Examples of corrosion prevention treatments include hydrothermal conversion treatments such as boehmite treatment, chemical conversion treatments, anodizing treatments, and plating treatments such as nickel or chromium.
  • the corrosion-resistant film may be formed by applying a coating agent.
  • Hydrothermal conversion treatment and anodizing treatment use a treatment agent to dissolve the metal foil surface and form metal compounds that have excellent corrosion resistance. These treatments can be defined as a type of chemical conversion treatment.
  • the corrosion-resistant coating can suppress delamination between the barrier layer L2 (e.g., aluminum alloy foil) and the base layer L1 during molding of the exterior film 130.
  • the corrosion-resistant coating can suppress dissolution and corrosion of the barrier layer L2 surface caused by hydrogen fluoride produced by the reaction of the electrolyte with moisture.
  • the corrosion-resistant coating can suppress dissolution and corrosion of aluminum oxide present on the barrier layer L2 surface.
  • the corrosion-resistant coating can improve the adhesion (wettability) of the barrier layer L2 surface.
  • the corrosion-resistant coating can suppress delamination between the base layer L1 and the barrier layer L2 during heat sealing.
  • the corrosion-resistant coating can suppress delamination between the base layer L1 and the barrier layer L2 during molding.
  • the heat-sealable resin layer L3 may be joined to the barrier layer L2 using an adhesive layer L5.
  • the heat-sealable resin layer L3 provides the exterior film 130 with heat-sealing sealability.
  • the heat-sealable resin layer L3 include resin films made of polyester resins such as polyethylene terephthalate resins and polybutylene terephthalate resins, polyolefin resins such as polyethylene resins and polypropylene resins, and acid-modified polyolefin resins obtained by graft-modifying these polyolefin resins with an acid such as maleic anhydride.
  • the thickness of the heat-sealable resin layer L3 may be 20 ⁇ m or more and 300 ⁇ m or less, or 40 ⁇ m or more and 150 ⁇ m or less, from the standpoint of sealability and strength.
  • the exterior film 130 may include one or more buffer layers outside the heat-sealable resin layer L3, and more preferably outside the barrier layer L2.
  • the buffer layer has a buffer function.
  • the buffer layer may be layered on the outside of the base layer L1.
  • the base layer L1 may function as a buffer layer.
  • the multiple buffer layers may be layered adjacent to each other, or may be layered with the base layer L1 or the barrier layer L2, etc., interposed therebetween.
  • the outer side of the exterior film 130 is the side that is farther away from the electrode body 115 when the exterior film 130 is wrapped around the electrode body 115.
  • the inner side of the exterior film 130 is the side that is closer to the electrode body 115 when the exterior film 130 is wrapped around the electrode body 115.
  • the material constituting the buffer layer can be selected from any material having cushioning properties.
  • materials having cushioning properties include rubber, nonwoven fabric, and foam sheet.
  • the rubber may be, for example, natural rubber, fluororubber, or silicone rubber.
  • the rubber hardness may be 20 or more and 90 or less.
  • the material constituting the nonwoven fabric may be a material having excellent heat resistance.
  • the thickness of the buffer layer composed of nonwoven fabric may be 100 ⁇ m or more, 200 ⁇ m or more, or 1000 ⁇ m or more.
  • the thickness of the buffer layer composed of nonwoven fabric may be 5000 ⁇ m or less, or 3000 ⁇ m or less.
  • the thickness of the buffer layer may be 100 ⁇ m to 5000 ⁇ m, 100 ⁇ m to 3000 ⁇ m, 200 ⁇ m to 5000 ⁇ m, 200 ⁇ m to 3000 ⁇ m, 1000 ⁇ m to 5000 ⁇ m, or 1000 ⁇ m to 3000 ⁇ m.
  • the thickness of the buffer layer may be particularly 1000 ⁇ m to 3000 ⁇ m.
  • the thickness of the buffer layer made of rubber may be 0.5 mm or more.
  • the thickness of the buffer layer made of rubber may be 10 mm or less, 5 mm or less, or 2 mm or less.
  • the thickness of the buffer layer made of rubber may be 0.5 mm or more and 10 mm or less, 0.5 mm or more and 5 mm or less, or 0.5 mm or more and 2 mm or less.
  • the buffer layer included in the exterior film 130 can function as a cushion.
  • the buffer layer included in the exterior film 130 can prevent the exterior film 130 from being damaged due to impact when the energy storage element 100 is dropped, or due to contact or collision during handling, such as during the manufacture of the energy storage element 100.
  • the lid body 140 together with the exterior film 130, constitutes the exterior body 120.
  • the lid body 140 closes the openings K1 and K2 of the cylindrical exterior film 130.
  • the gap between the lid body 140 and the exterior film 130 is sealed.
  • the lid body 140 is connected to the terminal 117.
  • the lid body 140 may hold the terminal 117.
  • the terminal 117 is electrically connected to the electrode body 115.
  • the lid body 140 is connected to the electrode body 115 by the terminal 117.
  • the terminal 117 may move somewhat relative to the electrode body 115.
  • the lid body 140 may move somewhat relative to the electrode body 115.
  • the lid body 140 is wrapped around the exterior film 130 which encases the electrode body 115.
  • the lid body 140 is joined to the exterior film 130.
  • the lid body 140 and the exterior film 130 may be joined by heat sealing.
  • the lid body 140 may be joined to the heat-fusible resin layer L3 of the exterior film 130 by heat sealing.
  • the lid body 140 may be joined in a circumferential area.
  • the lid body 140 and the exterior film 130 may be joined at a circumferential seal portion. The space between the lid body 140 and the exterior film 130 is sealed.
  • the lid body 140 and the terminal 117 constitute the lid body unit 113.
  • the lid body unit 113 and the electrode body 115 constitute the electrode body unit 111.
  • the electrode body unit 111 and the exterior film 130 are used to manufacture the energy storage element 100 and the energy storage element intermediate 110.
  • the lid body 140 of the energy storage element 100 and the energy storage element intermediate body 110 includes a first lid body 140A and a second lid body 140B.
  • the first lid body 140A holds the first terminal 117A
  • the second lid body 140B holds the second terminal 117B.
  • the first lid 140A and the second lid 140B face each other in the first direction D1.
  • the first lid 140A, the electrode body 115, and the second lid 140B are positioned in this order in the first direction D1.
  • the first lid 140A is positioned on a first side of the electrode body 115 in the first direction D1.
  • the second lid 140B is positioned on a second side of the electrode body 115 in the first direction D1.
  • the first lid 140A and the second lid 140B may have the same configuration and be arranged symmetrically.
  • the first lid 140A and the second lid 140B may have different configurations.
  • the first lid 140A and the second lid 140B may have different shapes.
  • the first lid body 140A and the first terminal 117A constitute the first lid body unit 113A.
  • the second lid body 140B and the second terminal 117B constitute the second lid body unit 113B.
  • the first lid body unit 113A extends from the electrode body 115 toward a first side in the first direction D1.
  • the second lid body unit 113B extends from the electrode body 115 toward a second side in the first direction D1.
  • the first lid body unit 113A and the second lid body unit 113B may have the same configuration and be arranged symmetrically.
  • the first lid body unit 113A and the second lid body unit 113B may have different configurations.
  • the first lid body unit 113A and the second lid body unit 113B may have different shapes.
  • lid body 140 can refer to both the first lid body 140A and the second lid body 140B.
  • lid body unit 113 can refer to both the first lid body unit 113A and the second lid body unit 113B.
  • the lid 140 may be rectangular. That is, the lid 140 may be a perfect rectangular prism, or may have a shape that can be considered a rectangular prism by modifying a portion of the shape of the outer surface.
  • the lid 140 may have a rectangular prism shape with chamfered corners.
  • the lid 140 may be in the shape of a polygonal prism. That is, the lid 140 may be a perfect polygonal prism, or may have a shape that can be considered a polygonal prism by modifying a portion of the shape of the outer surface.
  • the lid 140 may be in the shape of a polygonal prism with chamfered corners.
  • the lid 140 may be cylindrical. That is, the lid 140 may be a perfect cylinder, or may have a shape that can be considered cylindrical by modifying a portion of the shape of the outer surface.
  • the lid 140 may have a cylindrical shape with chamfered corners.
  • the lid body 140 may include a peripheral side end surface G1.
  • the lid body 140 may be joined to the exterior film 130 at the peripheral side end surface G1.
  • the lid body 140 may be welded to the exterior film 130 at the peripheral side end surface G1.
  • the lid body 140 may be heat sealed to the exterior film 130 at the peripheral side end surface G1.
  • the lid body 140 may be heat sealed to the heat-sealable resin layer L3 of the exterior film 130 at the peripheral side end surface G1.
  • the side end surface G1 of the lid body 140 may include multiple side end surfaces G11 to G14.
  • a corner portion G1X may be formed between two adjacent side end surfaces.
  • the peripheral side end surface G1 may be a bent surface.
  • the cover body 140 may include an outer principal surface G2 and an inner principal surface G3 as a pair of principal surfaces.
  • the outer principal surface G2 faces outward in the first direction D1.
  • the inner principal surface G3 faces inward in the first direction D1.
  • the inner principal surface G3 faces the internal space of the cylindrical exterior film 130.
  • the inner principal surface G3 faces the electrode body 115 in the first direction D1.
  • the outer side in the first direction D1 is the side away from the center of gravity of the electrode body 115 in the first direction D1.
  • the inner side in the first direction D1 is the side closer to the center of gravity of the electrode body 115 in the first direction D1.
  • the inner principal surface G3 faces the electrode body 115 in the first direction D1.
  • the lid 140 includes a side end surface G1 located between the outer main surface G2 and the inner main surface G3.
  • the side end surface G1 connects the outer main surface G2 and the inner main surface G3.
  • the side end surface G1 faces the tubular exterior film 130.
  • the side end surface G1 is joined to the exterior film 130.
  • the side end surface G1 may be welded to the heat-sealable resin layer L3 of the exterior film 130.
  • the side end surface G1 may be heat-sealed to the heat-sealable resin layer L3 of the exterior film 130.
  • the side end surface G1 of the lid 140 shown in FIG. 5A includes a first side end surface G11, a second side end surface G12, a third side end surface G13, and a fourth side end surface G14.
  • the first side end face G11 and the fourth side end face G14 extend in the second direction D2.
  • the first side end face G11 and the fourth side end face G14 are parallel.
  • the second side end face G12 and the third side end face G13 extend in the third direction D3.
  • the second side end face G12 and the third side end face G13 are parallel.
  • first side end face G11 and the fourth side end face G14 are parallel to the first direction D1. In the illustrated example, the first side end face G11 and the fourth side end face G14 are perpendicular to the third direction D3.
  • the second side end face G12 and the third side end face G13 are parallel to the first direction D1. In the illustrated example, the second side end face G12 and the third side end face G13 are perpendicular to the third direction D3.
  • the second side end face G12 is located between the first side end face G11 and the fourth side end face G14.
  • the second side end face G12 connects the first side end face G11 and the fourth side end face G14.
  • the third side end face G13 is located between the first side end face G11 and the fourth side end face G14.
  • the third side end face G13 connects the first side end face G11 and the fourth side end face G14.
  • the first direction D1 is the direction in which the first lid body 140A, the electrode body 115, and the second lid body 140B are arranged.
  • the second direction D2 is non-parallel to the first direction D1.
  • the third direction D3 is non-parallel to both the first direction D1 and the second direction D2.
  • the second direction D2 is perpendicular to the first direction D1.
  • the third direction D3 is perpendicular to both the first direction D1 and the second direction D2.
  • the side end surface G1 of the illustrated lid body 140 includes a corner portion G1X.
  • the side end surface G1 includes first to fourth side end surfaces, and the corner portion G1X is formed between two adjacent side end surfaces among the first to fourth side end surfaces. That is, the side end surface G1 of the lid body 140 includes four corner portions G1X.
  • the corner portion G1X is formed between the first side end surface G11 and the second side end surface G12.
  • the corner portion G1X is formed between the second side end surface G12 and the fourth side end surface G14.
  • the corner portion G1X is formed between the third side end surface G13 and the fourth side end surface G14.
  • the corner portion G1X is formed between the third side end surface G13 and the first side end surface G11.
  • the corner portion G1X may be chamfered to have a rounded shape.
  • a lower limit may be set for the thickness of the lid body 140, i.e., the length of the lid body 140 along the first direction D1.
  • a lower limit for the thickness of the lid body 140 By setting a lower limit for the thickness of the lid body 140, deformation of the exterior body 120 can be suppressed when the energy storage elements 100 are stacked. Therefore, the energy storage elements 100 can be stacked stably.
  • the gap between the exterior film 130 and the side end surface G1 of the lid body 140 can be stably sealed. In other words, the exterior body 120 can be stably sealed.
  • the thickness of the lid body 140 may be 1.0 mm or more, 3.0 mm or more, or 4.0 mm or more.
  • An upper limit may be set for the thickness of the lid body 140.
  • the thickness of the lid body 140 may be 10 mm or less, 8.0 mm or less, or 7.0 mm or less.
  • the thickness of the lid 140 may be 1.0 mm or more and 10 mm or less, 1.0 mm or more and 8.0 mm or less, 1.0 mm or more and 7.0 mm or less, 3.0 mm or more and 10 mm or less, 3.0 mm or more and 8.0 mm or less, 3.0 mm or more and 7.0 mm or less, 4.0 mm or more and 10 mm or less, 4.0 mm or more and 8.0 mm or less, or 4.0 mm or more and 7.0 mm or less.
  • lid body 140 which is rectangular.
  • the thickness of lid body 140 may vary depending on the part of lid body 140. If the thickness of lid body 140 varies depending on the part, the thickness of lid body 140 shall be the thickness of the thickest part.
  • the lid body 140 may be a resin molded product.
  • the lid body 140 may be a metal molded product.
  • the lid body 140 may be conductive.
  • the material constituting the lid body 140 may include one or more of a resin, a metal, a metal oxide, a carbon material, and a rubber material.
  • the material constituting the lid body 140 may include a metal oxide, a carbon material, and a rubber material.
  • Resin molded products refer to items made by molding processes such as injection molding and extrusion molding.
  • Examples of the resin material contained in the lid 140 include polyester-based resins such as polyethylene terephthalate-based resins and polybutylene terephthalate-based resins.
  • Examples of the resin material contained in the lid 140 include polyolefin-based resins such as polyethylene-based resins, fluorine-based resins, and polypropylene-based resins, or cyclic polyolefin-based resins, or acid-modified polyolefin-based resins obtained by graft-modifying these polyolefin-based resins with an acid such as maleic anhydride.
  • the main component contained in the lid 140 and the main component contained in the heat-sealable resin layer L3 of the exterior film 130 may be the same.
  • the main component of the lid 140 and the main component of the heat-sealable resin layer L3 include polyolefin resins such as polyethylene resins and polypropylene resins, and acid-modified polyolefin resins obtained by graft-modifying these polyolefin resins with an acid such as maleic anhydride.
  • the main component of a certain element is a material that accounts for 50% or more by mass of the materials contained in that element.
  • the lid 140 may include a through hole 141.
  • the through hole 141 extends between the outer main surface G2 and the inner main surface G3.
  • the terminal 117 passes through the through hole 141.
  • the space between the terminal 117 and the lid 140 is sealed.
  • a sealant may be embedded in the through hole 141 between the terminal 117 and the lid 140.
  • the terminal 117 may include a conductive core material and an adhesive member wound around the core material.
  • the adhesive member is a member having adhesive power.
  • the adhesive member may be a film, a rectangular parallelepiped shape, or a frame body having a frame shape.
  • the adhesive member can improve the airtightness of the exterior body 120. In particular, it can stably seal between the metal core material and the resin cover body 140.
  • Examples of materials for the adhesive member include polyethylene resins such as polyethylene terephthalate resins and polybutylene terephthalate resins, polyolefin resins such as polypropylene resins, or cyclic polyolefin resins, and acid-modified polyolefin resins obtained by graft-modifying these polyolefin resins with an acid such as maleic anhydride.
  • the adhesive film may include one or more of the above-mentioned films.
  • the position at which the terminal 117 protrudes from the exterior body 120 is not particularly limited.
  • the position of the through hole 141 can be changed from the example shown in the figure.
  • the terminal 117 may pass between the exterior film 130 and the lid 140.
  • the space between the terminal 117 and the exterior film 130 is sealed, and the space between the terminal 117 and the side end surface G1 of the lid 140 is sealed.
  • the through hole 141 does not have to be formed in the lid 140.
  • the terminal 117 and the lid 140 may be formed integrally.
  • the terminal 117 and the lid 140 may be formed seamlessly.
  • the lid body 140 shown in FIG. 5A has a rectangular parallelepiped shape. As shown in FIG. 5B and FIG. 5C, the lid body 140 may include a recess G2a in the outer main surface G2.
  • two recesses G2a are formed in the cover 140.
  • the two recesses G2a are cylindrical recesses with bottoms formed from the outer main surface G2 and do not reach the inner main surface G3.
  • the two recesses G2a are aligned in the second direction D2.
  • the terminal 117 and the through hole 141 are located between the two recesses G2a in the second direction D2.
  • Each recess G2a has a circular opening.
  • Each recess G2a may have a circular shape in a cross section perpendicular to the first direction D1.
  • Each recess G2a may have a constant cross-sectional shape at any position in the first direction D1.
  • one recess G2a is formed in the cover 140.
  • the recess G2a may have a rectangular opening.
  • the recess G2a may have a rectangular shape in a cross section perpendicular to the first direction D1.
  • the recess G2a may have a constant cross-sectional shape at any position in the first direction D1.
  • the rectangular cross-sectional shape may include a pair of sides parallel to the second direction D2 and a pair of sides parallel to the third direction D3.
  • the lid 140 may include a convex portion G2b on the outer main surface G2.
  • one convex portion G2b is formed on the lid 140.
  • the convex portion G2b protrudes outward in the first direction D1.
  • the convex portion G2b may have a rectangular shape in a cross section perpendicular to the first direction D1.
  • the convex portion G2b may have a constant cross-sectional shape at any position in the first direction D1.
  • the rectangular cross-sectional shape may include a pair of sides parallel to the second direction D2 and a pair of sides parallel to the third direction D3.
  • a recess G2a and a protrusion G2b may be formed on the outer main surface G2 of the cover 140.
  • one recess G2a and one protrusion G2b are formed on the cover 140.
  • the recess G2a may have a rectangular opening.
  • the recess G2a may have a rectangular shape in a cross section perpendicular to the first direction D1.
  • the recess G2a may have a constant cross-sectional shape at any position in the first direction D1.
  • the rectangular cross-sectional shape may include a pair of sides parallel to the second direction D2 and a pair of sides parallel to the third direction D3.
  • the protrusion G2b may have a rectangular cross-sectional shape in a cross section perpendicular to the first direction D1.
  • the protrusion G2b may have a constant cross-sectional shape at any position in the first direction D1.
  • the rectangular cross-sectional shape may include a pair of sides parallel to the second direction D2 and a pair of sides parallel to the third direction D3.
  • the lid body 140 may protrude outward from the exterior film 130 in the first direction D1.
  • the recess G2a, the protrusion G2b, and the lid body 140 protruding outward in the first direction D1 from the exterior film 130 can be used to fix the lid body 140 in the manufacture of the energy storage element 100 and the energy storage element intermediate 110.
  • the energy storage element 100 and the energy storage element intermediate 110 are manufactured using the electrode body unit 111 and the exterior film 130.
  • the exterior film 130 is wound around the electrode body unit 111.
  • the exterior film 130 is wound around the electrode body unit 111 so as to contact the side end faces G1 of the first lid body 140A and the second lid body 140B.
  • a first opening K1 and a second opening K2 are formed.
  • the first lid body 140A is located within the first opening K1.
  • the side end face G1 of the first lid body 140A can contact the inner surface of the exterior film 130.
  • the second lid body 140B is located within the second opening K2.
  • the side end face G1 of the second lid body 140B can contact the inner surface of the exterior film 130.
  • the exterior film 130 included in the energy storage element 100 may have a rectangular shape in an unfolded state.
  • the exterior film 130 shown in FIG. 4B includes a pair of side edges A1, A2 and a pair of ends B1, B2.
  • the pair of side edges A1, A2 include a first side edge A1 and a second side edge A2.
  • the first opening K1 is formed by the first side edge A1.
  • the side end surface G1 of the first lid body 140A faces the first side edge A1.
  • the second opening K2 is formed by the second side edge A2.
  • the side end surface G1 of the second lid body 140B faces the second side edge A2.
  • the gap between the exterior film 130 and the lid 140 is sealed.
  • the side end face G1 of the lid 140 and the exterior film 130 are joined.
  • the side end face G1 of the lid 140 and the exterior film 130 may be welded.
  • the side end face G1 of the lid 140 and the exterior film 130 are heat sealed.
  • a joint, for example an opening seal portion S1 is formed between the side end face G1 and the exterior film 130.
  • the opening seal portion S1 may be a portion where the heat-sealable resin layer L3 of the exterior film 130 is fused to the side end face G1.
  • the side end surface G1 of the first lid body 140A is joined to the first side edge portion A1 of the exterior film 130.
  • the side end surface G1 of the second lid body 140B is joined to the second side edge portion A2 of the exterior film 130.
  • the opening seal portion S1 includes a first seal portion S11, a second seal portion S12, a third seal portion S13, and a fourth seal portion S14.
  • the first seal portion S11 is formed between a first side end face G11 of the side end face G1 and the exterior film 130.
  • the second seal portion S12 is formed between a second side end face G12 of the side end face G1 and the exterior film 130.
  • the third seal portion S13 is formed between a third side end face G13 of the side end face G1 and the exterior film 130.
  • the fourth seal portion S14 is formed between a fourth side end face G14 of the side end face G1 and the exterior film 130.
  • a lower limit may be set for the seal strength of the opening seal portion S1.
  • the seal strength of the opening seal portion S1 may be 40 N/15 mm or more, 50 N/15 mm or more, 60 N/15 mm or more, 70 N/15 mm or more, or 85 N/15 mm or more.
  • the sealing of the electrode body 115 by the exterior body 120 can be stably maintained even when the energy storage element 100 is used for several years (less than 10 years).
  • the sealing of the electrode body 115 by the exterior body 120 can be stably maintained even when the energy storage element 100 is used for 10 years.
  • the seal strength of the opening seal portion S1 may be 200N/15mm or less, or 150N/15mm or less.
  • the seal strength of the opening seal portion S1 may be 40N/15mm or more and 200N/15mm or less, 50N/15mm or more and 200N/15mm or less, 60N/15mm or more and 200N/15mm or less, 70N/15mm or more and 200N/15mm or less, or 85N/15mm or more and 200N/15mm or less.
  • the seal strength of the opening seal portion S1 may be 40N/15mm or more and 150N/15mm or less, 50N/15mm or more and 150N/15mm or less, 60N/15mm or more and 150N/15mm or less, 70N/15mm or more and 150N/15mm or less, or 85N/15mm or more and 150N/15mm or less.
  • the seal strength of the opening seal portion S1 is the seal strength measured on the longest flat surface of the side end face G1.
  • the seal strength is the peel adhesion strength (N/15 mm) measured in accordance with the 90-degree peel test specified in JIS K6854-1:1999.
  • the illustrated exterior film 130 includes a first portion 131A, a second portion 131B, a third portion 131C, and a fourth portion 131D.
  • the first portion 131A includes a portion that is joined to the first side end surface G11 of the first lid body 140A and the first side end surface G11 of the second lid body 140B. In the exterior body 120, the first portion 131A extends between the first side end surface G11 of the first lid body 140A and the first side end surface G11 of the second lid body 140B.
  • the second portion 131B includes a portion that is joined to the second side end surface G12 of the first lid body 140A and the second side end surface G12 of the second lid body 140B. In the exterior body 120, the second portion 131B extends between the second side end surface G12 of the first lid body 140A and the second side end surface G12 of the second lid body 140B.
  • the third portion 131C includes a portion that is joined to the third side end surface G13 of the first lid body 140A and the third side end surface G13 of the second lid body 140B. In the exterior body 120, the third portion 131C extends between the third side end surface G13 of the first lid body 140A and the third side end surface G13 of the second lid body 140B.
  • the fourth portion 131D includes a portion that is joined to the fourth side end surface G14 of the first lid body 140A and the fourth side end surface G14 of the second lid body 140B. In the exterior body 120, the fourth portion 131D extends between the fourth side end surface G14 of the first lid body 140A and the fourth side end surface G14 of the second lid body 140B.
  • the illustrated exterior film 130 further includes a first extension portion 132A and a second extension portion 132B extending from the electrode body 115 when wrapped around the electrode body 115.
  • the first extension portion 132A is connected to the second portion 131B.
  • the second extension portion 132B is connected to the fourth portion 131D.
  • the first extension portion 132A includes a first end portion B1 of the exterior film 130 included in the energy storage element 100.
  • the second extension portion 132B includes a second end portion B2 of the exterior film 130 included in the energy storage element 100.
  • the space between the first extension portion 132A and the second extension portion 132B of the exterior film 130 is sealed.
  • the first extension portion 132A and the second extension portion 132B are joined.
  • the first extension portion 132A and the second extension portion 132B may be welded together.
  • the first extension portion 132A and the second extension portion 132B are heat sealed together.
  • a joint portion, for example, an extended seal portion S2 is formed between the first extension portion 132A and the second extension portion 132B.
  • the extended seal portion S2 may be a portion where the heat-sealable resin layers L3 of the exterior film 130 are fused together.
  • the exterior body 120 is sealed by the opening seal portion S1 and the extended seal portion S2.
  • the extended seal portion S2 may extend in the longitudinal direction of the energy storage element 100 and the electrode unit 111.
  • the extended seal portion S2 may extend in the second direction D2.
  • the extended seal portion S2 may extend in a direction connecting the pair of openings K1, K2.
  • the extended seal portion S2 may extend in the first direction D1.
  • two extended seal portions S2 are provided at positions spaced apart in the first direction D1.
  • each extended seal portion S2 is L-shaped.
  • each extended seal portion S2 extends in both the first direction D1 and the second direction D2.
  • the extended seal portion S2 may be linear, unlike the example shown in the figure.
  • the extended seal portion S2 may be I-shaped.
  • the extended seal portion S2 may extend in either the first direction D1 or the second direction D2.
  • the position where the extended seal portion S2 is formed in the exterior body 120 can be selected arbitrarily.
  • the extended seal portion S2 extends to the connection end that connects to the second portion 131B of the first extending portion 132A.
  • the extended seal portion S2 is connected to the second seal portion S12.
  • the extended seal portion S2 extends to the connection end that connects to the fourth portion 131D of the second extending portion 132B.
  • the extended seal portion S2 is connected to the fourth seal portion S14.
  • the pair of extension portions 132A, 132B may be located outside the cylindrical portion formed by the first portion 131A to the fourth portion 131D.
  • the pair of extension portions 132A, 132B may be disposed on the second portion 131B.
  • the pair of extension portions 132A, 132B may be disposed on the fourth portion 131D.
  • the pair of extension portions 132A, 132B may be located inside the cylindrical portion formed by the first portion 131A to the fourth portion 131D.
  • the energy storage element intermediate 110 is manufactured using the electrode unit 111 and the exterior film 130.
  • the extended seal portion S2 includes at least a portion of an unsealed portion S2X.
  • the unsealed portion S2X is located between a pair of extended seal portions S2 in the first direction D1.
  • the extended seal portion S2 may not be formed at all.
  • the energy storage element intermediate 110 is not sealed.
  • the energy storage element intermediate 110 is open between the pair of extended portions 132A, 132B.
  • the electrolyte is injected into the energy storage element intermediate body 110 through the open portion.
  • the pair of extension portions 132A, 132B of the energy storage element intermediate body 110 into which the electrolyte has been injected are joined over the entire length along the first direction D1 to obtain the energy storage element 100.
  • the temporary energy storage element may be manufactured by sealing the energy storage element intermediate 110 into which the electrolyte has been injected. Electricity may be passed through the temporary energy storage element. Next, the exterior body 120 of the temporary energy storage element may be opened, and the gas generated by the passage of electricity may be discharged from the exterior body 120. The exterior body 120 may then be sealed again to manufacture the energy storage element 100.
  • the pair of extension portions 132A, 132B of the energy storage element intermediate 110 may be partially removed.
  • the pair of extension portions 132A, 132B that extend a long distance from the electrode unit 111 are easier to process, such as by joining.
  • the extension length of the pair of extension portions 132A, 132B from the electrode unit 111 may be longer in the pair of extension portions 132A, 132B included in the energy storage element intermediate 110 than in the pair of extension portions 132A, 132B included in the energy storage element 100.
  • the two-dot chain line shown in FIG. 4B indicates the outline of the exterior film 130 included in the energy storage element intermediate 110.
  • first direction D1, second direction D2, and third direction D3 shown in the drawings are directions based on the electrode unit 111.
  • the second portion 131B, third portion 131C, fourth portion 131D, first extension portion 132A, and second extension portion 132B included in the exterior film 130 change positions relative to the first direction D1, second direction D2, and third direction D3.
  • the lid body 140 may include a core material 140x and a surrounding member 140y.
  • the surrounding member 140y may form the side end surface G1 of the lid body 140 that is joined to the exterior film 130.
  • the lid body 140 may include a core material 140x and a surrounding member 140y formed of different materials.
  • the lid body 140 including the core material 140x and the surrounding member 140y makes it easier to improve the seal strength between the lid body 140 and the exterior film 130, ensure the strength of the lid body 140, and ensure the input and output paths of power to the electrode body 115.
  • the core material 140x may contain a metal.
  • the core material 140x may contain a metal as a main component.
  • the core material 140x may be made of a metal.
  • the core material 140x may be made of a metal.
  • the core material 140x may be conductive.
  • the core material 140x may be electrically connected to the terminal 117 and function as a terminal when inputting or outputting power to the electrode body 115 (e.g., charging or discharging).
  • the core material 140x may contain resin.
  • the core material 140x may contain resin as a main component.
  • the core material 140x may be made of resin.
  • the core material 140x may be made of resin.
  • the core material 140x may be non-conductive.
  • the surrounding member 140y may contain resin.
  • the surrounding member 140y may contain resin as a main component.
  • the surrounding member 140y may be made of resin.
  • the surrounding member 140y may be made of resin.
  • the surrounding member 140y may be non-conductive.
  • the surrounding member 140y may contain a metal.
  • the surrounding member 140y may contain a metal as a main component.
  • the surrounding member 140y may be made of a metal.
  • the surrounding member 140y may be made of a metal.
  • the surrounding member 140y may be conductive.
  • the surrounding member 140y may be electrically connected to the terminal 117 and function as a terminal when inputting or outputting power to the electrode body 115 (e.g., charging or discharging).
  • any of the candidates for the core material 140x described above can be combined with any of the candidates for the surrounding material 140y described above.
  • the core material 140x may contain resin, and the surrounding member 140y may contain metal.
  • the core material 140x may contain resin as a main component, and the surrounding member 140y may contain metal as a main component.
  • the core material 140x may be made of resin, and the surrounding member 140y may be made of metal.
  • the core material 140x may be non-conductive, and the surrounding member 140y may be conductive. In these examples, the surrounding member 140y may be electrically connected to the terminal 117 and function as a terminal when inputting or outputting power to the electrode body 115 (e.g., charging or discharging).
  • the core material 140x may contain metal, and the surrounding member 140y may contain resin.
  • the core material 140x may contain metal as a main component, and the surrounding member 140y may contain resin as a main component.
  • the core material 140x may be made of metal, and the surrounding member 140y may be made of resin.
  • the core material 140x may be conductive, and the surrounding member 140y may be non-conductive.
  • the core material 140x may be electrically connected to the terminal 117 and function as a terminal when inputting or outputting power to the electrode body 115 (e.g., charging and discharging).
  • the surrounding member 140y may contribute to improving the sealing strength of the lid body 140 and the exterior film 130.
  • the surrounding member 140y may be in the form of a film. As shown in Figures 5L and 5M, the surrounding member 140y may be in the form of a frame.
  • the space between the core material 140x and the surrounding member 140y is sealed.
  • the core material 140x and the surrounding member 140y may be joined by welding, bonding, or brazing. Welding may be heat sealing, ultrasonic bonding, high frequency bonding, welding, or the like.
  • One of the core material 140x and the surrounding member 140y as a resin molded product may be joined to the other of the core material 140x and the surrounding member 140y by in-mold molding.
  • brazing bonding include bonding using an adhesive or solder.
  • Examples of fastening include physical bonding such as fitting, crimping, and bonding using a fastener such as a screw.
  • the material of the surrounding member 140y may be set as follows.
  • the surrounding member 140y may function as an adhesive member.
  • the adhesive member is a member that has adhesive strength.
  • the surrounding member 140y as an adhesive member may function as an adhesive member that improves the sealing strength between the lid body 140 (core material 140x) and the exterior film 130.
  • the surrounding member 140y as an adhesive member may be in the form of a film.
  • the surrounding member 140y as an adhesive member may be a resin film arranged on the core material 140x.
  • the resin film may be a single layer or may include multiple layers.
  • the surrounding member 140y as an adhesive member may be in the form of a frame.
  • the surrounding member 140y as an adhesive member may be a resin molded product.
  • the surrounding member 140y as an adhesive member may contain a resin containing a polyolefin skeleton as a main component.
  • the surrounding member 140y as an adhesive member may contain a polyolefin as a main component.
  • the surrounding member 140y as an adhesive member may contain polypropylene as a main component.
  • the polyolefin may be one or more polyolefins selected from linear polyolefins and cyclic polyolefins.
  • the polyolefin used in the surrounding member 140y as the adhesive member may be an acid-modified polyolefin.
  • An acid-modified polyolefin is a polymer modified by block polymerization or graft polymerization of a polyolefin with an acid component.
  • polyolefins to be acid-modified include the above-mentioned polyolefins, copolymers in which the above-mentioned polyolefins are copolymerized with polar molecules such as acrylic acid or methacrylic acid, and polymers such as cross-linked polyolefins.
  • acid components used for acid modification include carboxylic acids such as maleic acid, acrylic acid, itaconic acid, crotonic acid, maleic anhydride, and itaconic anhydride, or anhydrides of these carboxylic acids.
  • the material used for the peripheral member 140y as an adhesive member described here may be used for the portion that comes into contact with the metal core material 140x.
  • the material used for the peripheral member 140y as an adhesive member described here may be used for the portion that comes into contact with the exterior film 130.
  • the material used for the peripheral member 140y as an adhesive member described here may also be used for the portion of the lid 140 (e.g., the core material 140x) that forms the through hole 141, or for the portion that comes into contact with the terminal 117.
  • the material used for the peripheral member 140y as an adhesive member described here may also be used for the portion of the terminal 117 that comes into contact with the lid 140.
  • the energy storage element 100 can be manufactured using the energy storage element intermediate 110. Therefore, the manufacturing apparatus 10 for manufacturing the energy storage element 100 may include a manufacturing apparatus 20 for manufacturing the energy storage element intermediate 110.
  • the manufacturing method for manufacturing the energy storage element 100 may include a manufacturing method for manufacturing the energy storage element intermediate 110.
  • the manufacturing apparatus 20 manufactures the energy storage element intermediate 110 using the electrode body unit 111 and the exterior film 130.
  • the manufacturing apparatus 20 may include a fixing device 40 and a first joining device 70.
  • the manufacturing apparatus 20 may further include a winding device 50.
  • the fixing device 40 fixes the first lid body 140A and the second lid body 140B of the electrode body unit 111.
  • the fixing device 40 may fix the lid bodies 140A, 140B located on the exterior film 130.
  • the exterior film 130 may be supplied in a rolled state.
  • the winding device 50 may supply the exterior film 130 in a rolled state.
  • the winding device 50 may wind the exterior film 130 around the electrode body unit 111.
  • the rolled exterior film 130 may be in circumferential contact with each side end surface G1 of the first lid body 140A and the second lid body 140B.
  • the first joining device (joining device) 70 joins the side end surface G1 and the exterior film 130.
  • the first joining device 70 may heat seal the side end surface G1 and the exterior film 130.
  • the heat-fusible resin layer L3 of the exterior film 130 may be fused to the joining object.
  • the manufacturing apparatus 20 may further include a film supplying device 30, an electrode unit supplying device 35, a positioning device 38, and a second joining device 90.
  • the manufacturing method for manufacturing the energy storage element intermediate 110 uses the electrode unit 111 and the exterior film 130 to manufacture the energy storage element intermediate 110.
  • the manufacturing method may include a step S3 of fixing the first lid body 140A and the second lid body 140B of the electrode unit 111, and a step S4 of wrapping the exterior film 130 around the electrode unit 111.
  • the exterior film 130 contacts the side end surfaces G1 of the first lid body 140A and the second lid body 140B circumferentially or partially.
  • the exterior film 130 may contact the side end surfaces G1 of the first lid body 140A and the second lid body 140B circumferentially.
  • the side end surfaces G1 and the exterior film 130 are joined.
  • the manufacturing method may further include a step S1 of preparing an electrode unit 111, a step S2 of supplying the electrode unit 111 and an exterior film 130, and a step S5 of joining the extension portion.
  • step S1 of preparing the electrode unit 111 the electrode unit 111 is prepared.
  • the electrode unit 111 may be manufactured.
  • a manufactured electrode unit 111 may be obtained.
  • the electrode unit 111 includes an electrode body 115, a first terminal 117A, a second terminal 117B, a first cover body 140A, and a second cover body 140B.
  • the electrode body 115 is located between the first cover body 140A and the second cover body 140B.
  • the first terminal 117A is electrically connected to the electrode body 115.
  • the first cover body 140A is connected to the first terminal 117A.
  • the second terminal 117B is electrically connected to the electrode body 115.
  • the second cover body 140B is connected to the second terminal 117B.
  • the first terminal 117A is separate from the first lid 140A and is held by the first lid 140A.
  • the second terminal 117B is separate from the second lid 140B and is held by the second lid 140B.
  • the first lid 140A, the electrode body 115, and the second lid 140B are positioned in this order from the first side to the second side in the first direction D1.
  • step S2 is carried out to supply the electrode unit 111 and the exterior film 130.
  • the film supply device 30, electrode unit supply device 35, and positioning device 38 of the manufacturing apparatus 20 are used.
  • the film supply device 30 supplies the exterior film 130.
  • the electrode unit supply device 35 supplies the electrode unit 111.
  • the positioning device 38 adjusts the relative positions of the electrode unit 111 and the exterior film 130.
  • the film supply device 30 may include a roll 33 that holds a long exterior film 130L.
  • the long exterior film 130L may be wound around the roll 33 to form a roll 130R.
  • the film supply device 30 may include a first film holding section (supply chuck) 31.
  • the first film holding section 31 holds the long exterior film 130L.
  • the first film holding section 31 holds and moves the long exterior film 130L, thereby unwinding the long exterior film 130L as a roll 130R from the roll 33.
  • the film supplying device 30 may include a second film holding section (cutting holding section) 32.
  • the second film holding section 32 holds a portion of the long exterior film 130L between the first film holding section and the roll 13R.
  • the exterior film 130 used to manufacture one energy storage element intermediate 110 is held between the first film holding section 31 and the second film holding section 32.
  • the second film holding section 32 may be capable of cutting the long exterior film 130L.
  • the second film holding section 32 may hold the cut exterior film 130 used to manufacture one energy storage element intermediate 110 together with the first film holding section 31.
  • the first film holding part 31 moves in the second direction D2.
  • the exterior film 130 is unrolled in the second direction D2.
  • the exterior film 130 held by the first film holding part 31 spreads in the first direction D1 and the second direction D2.
  • the normal or perpendicular direction of the exterior film 130 held by the first film holding part 31 and the second film holding part 32 is parallel to the third direction D3.
  • the second film holding portion 32 may be movable in the second direction D2.
  • the film supply device 30 may include a position acquisition unit 34.
  • the position acquisition unit 34 acquires information regarding the position of the long exterior film 130L being unwound from the roll 33.
  • the position acquisition unit 34 makes it possible to confirm that the long exterior film 130L is being supplied along a predetermined path.
  • the position acquisition unit 34 also makes it possible to confirm that no deformation, such as wrinkles or folds, has occurred in the long exterior film 130L being supplied.
  • the position acquisition unit 34 may be an imaging device such as a camera.
  • the electrode unit supplying device 35 may include a holding and transporting section 36.
  • the holding and transporting section 36 holds the electrode unit 111 and supplies the held electrode unit 111 to a predetermined position.
  • the holding and transporting section 36 may adsorb the electrode unit 111.
  • the positioning device 38 includes a positioning camera 38A.
  • the positioning camera 38A acquires information regarding the relative position between the exterior film 130 supplied by the film supply device 30 and the electrode unit 111 supplied by the electrode unit supply device 35. If the relative position between the exterior film 130 and the electrode unit 111 is outside the allowable range, at least one of the film supply device 30 and the electrode unit supply device 35 adjusts the relative position to within the allowable range.
  • the exterior film 130 may be supplied by the film supplying device 30.
  • the first film holding unit 31 grips and moves the long exterior film 130L. This causes the exterior film 130 to be supplied.
  • the supplied exterior film 130 is held between the first film holding unit 31 and the second film holding unit 32, as shown in FIG. 8B.
  • the position acquisition unit 34 can confirm that the exterior film 130 is being supplied via a predetermined path.
  • the position acquisition unit 34 can confirm that the supplied exterior film 130 is free of deformation such as wrinkles or folds.
  • the first film holding unit 31 is configured as a supply chuck.
  • the supply chuck includes a pair of chuck bodies that can move toward and away from each other.
  • the manufacturing apparatus 20 may include the first film holding unit 31 shown in Figs. 36A to 36E.
  • the first film holding section 31 may include a first roll 311 and a second roll 312.
  • the exterior film 130 may be held between the first roll 311 and the second roll 312.
  • the first roll 311 and the second roll 312 may function as nip rolls.
  • the first roll 311 is rotatable about a first rotation axis 311A.
  • the second roll 312 is rotatable about a second rotation axis 312A.
  • the first rotation axis 311A and the second rotation axis 312A may be parallel to each other.
  • FIGS. 36A to 36E show a specific example of the first film holding section 31.
  • the first roll 311 and the second roll 312 are rotatable around the adjustment axis 313A.
  • the adjustment axis 313A is non-parallel to both the first rotation axis 311A and the second rotation axis 312A.
  • the adjustment axis 313A may be perpendicular to both the first rotation axis 311A and the second rotation axis 312A.
  • the first roll 311 and the second roll 312 are rotatable around the adjustment axis 313A in synchronization.
  • the first roll 311 and the second roll 312 are rotatable around the adjustment axis 313A while holding the exterior film 130.
  • the exterior film 130 can be held while effectively preventing the occurrence of wrinkles, sagging, etc.
  • the rotation axes 311A, 312A of the nip rolls 311, 312 holding the exterior film 130 may be slightly inclined with respect to the width direction (short direction) of the exterior film 130.
  • This phenomenon occurs.
  • One possible reason for this phenomenon is that a deviation occurs in the supply direction of the exterior film 130 to the film holding section 31.
  • the distance of the exterior film 130 between the first film holding portion 31 and the second film holding portion 32 is not constant at each position in the width direction but varies.
  • the tensile force of the exterior film 130 varies greatly at each position in the width direction of the exterior film 130. More specifically, in the example shown in FIG. 36D, the tension of the exterior film 130 is greatest at the side edge of the first side (lower side in the paper of FIG. 36D) in the first direction D1. In the example shown in FIG. 36D, the tension of the exterior film 130 is greatest at the side edge of the second side (upper side in the paper of FIG. 36D) in the first direction D1. It is also conceivable that almost no tension is applied to the exterior film 130 at the side edge of the second side in the first direction D1.
  • the first roll 311 and the second roll 312 are capable of rotating about the adjustment axis 313A while holding the exterior film 130. Therefore, as shown in FIG. 36E, the first roll 311 and the second roll 312 holding the exterior film 130 rotate so that the tension variation in the width direction of the exterior film 130 is reduced when tension is applied. Therefore, the exterior film 130 can be kept taut while suppressing the occurrence of wrinkles and sagging in the exterior film 130.
  • the adjustment axis 313A is not parallel to the first rotation axis 311A. As illustrated, the adjustment axis 313A may be perpendicular to the first rotation axis 311A. The adjustment axis 313A is not parallel to the second rotation axis 312A. As illustrated, the adjustment axis 313A may be perpendicular to the second rotation axis 312A. In the example shown in Figures 36A to 36E, the adjustment axis 313A is parallel to the third direction D3. The adjustment axis 313A is parallel to the normal direction of the exterior film 130 held by the first film holding section 31. In other words, the adjustment axis 313A is parallel to the normal direction to a portion of the exterior film 130 that is located upstream of the first roll 311 and the second roll 312.
  • the first film holding part 31 may include a roll holding part 313 and a holding base part 314.
  • the roll holding part 313 rotatably holds the first roll 311 and the second roll 312.
  • the holding base part 314 holds the roll holding part 313 rotatably around the adjustment axis 313A.
  • the first roll 311 and the second roll 312 can be rotated around the respective rotation axes 311A, 312A, and the first roll 311 and the second roll 312 holding the exterior film 130 can be rotated around the adjustment axis 313A that is not parallel to the rotation axes 311A, 312A.
  • the first roll 311 and the second roll 312 face each other in the third direction D3.
  • the roll holding unit 313 may be capable of adjusting the distance between the first roll 311 and the second roll 312.
  • the roll holding unit 313 may be capable of regulating the rotation of the first roll 311 and the second roll 312.
  • the first film holding part 31 is movable in a movement direction non-parallel to both the rotation axes 311A, 312A and the adjustment axis 313A.
  • the first film holding part 31 is movable while holding the exterior film 130.
  • the movement direction of the first film holding part 31 is the second direction D2.
  • the exterior film 130 can be unwound from the roll 33.
  • tension can be applied to the exterior film 130.
  • the exterior film 130 can be maintained in a taut state.
  • the film supply device 30 may include a guide rail 281 extending in a movement direction D2 that is non-parallel to both the rotation axes 311A, 312A and the adjustment axis 313A.
  • the film holding section 31 may be movable along the guide rail 281.
  • the film holding section 31 may slide on the guide rail 281.
  • the holding base section 314 may slide on the guide rail 281.
  • the exterior film 130 can be unwound from the roll 33 with a simple configuration.
  • tension can be applied to the exterior film 130 held by the film holding section 31 with a simple configuration.
  • the film supply device 30 may include a holding drive unit 282 that moves the first film holding unit 31 in a movement direction D2 that is non-parallel to both the rotation axes 311A, 312A and the adjustment axis 313A.
  • the exterior film 130 can be unwound from the roll 33 with a simple configuration.
  • tension can be applied to the exterior film 130 held by the film holding unit 31 with a simple configuration.
  • the holding drive unit 282 may be a ball screw mechanism.
  • the screw of the ball screw mechanism is held by a guide rail 281.
  • the screw of the ball screw mechanism extends in the second direction D2, which is the movement direction of the first film holding unit 31.
  • the nut of the ball screw mechanism is attached to the holding base portion 314 of the first film holding unit 31.
  • the holding drive unit 282 may be a hydraulic cylinder, a pneumatic cylinder, or a linear motor.
  • the holding drive unit 282 may be any other linear motion mechanism.
  • the first film holding section 31 constitutes the tension applying device 28.
  • the tension applying device 28 may include the first film holding section 31, a guide rail 281, and a holding drive section 282.
  • the electrode body unit 111 is supplied by the electrode body unit supply device 35.
  • the electrode body unit supply device 35 places the electrode body unit 111 on the exterior film 130.
  • the electrode body unit 111 is placed on the exterior film 130 so that the first side end surface G11 of the first cover body 140A and the first side end surface G11 of the second cover body 140B contact the exterior film 130.
  • the positioning device 38 positions the electrode body unit 111 on the exterior film 130.
  • the electrode body unit 111 is positioned with respect to the exterior film 130 so that the electrode body 115 of the electrode body unit 111 is located on the first part 131A (see FIG. 4B) of the exterior film 130.
  • step S2 an example has been shown in which the electrode unit 111 is placed on the exterior film 130.
  • the electrode unit 111 may be supplied, and then the exterior film 130 may be supplied so as to contact the electrode unit 111.
  • step S2 a step of fixing the lid body 140 of the electrode body unit 111 is carried out.
  • step S3 the fixing device 40 of the manufacturing apparatus 20 is used.
  • the fixing device 40 fixes the first lid body 140A and the second lid body 140B of the electrode body unit 111.
  • the fixing device 40 may fix the first lid body 140A and the second lid body 140B located on the exterior film 130 so that they do not move relative to the exterior film 130.
  • the manufacturing apparatus 20 may include a fixing device 40 used for the first lid body 140A and a fixing device 40 used for the second lid body 140B separately.
  • the fixing device 40 used for the first lid body 140A and the fixing device 40 used for the second lid body 140B may have the same configuration and be arranged symmetrically.
  • the fixing device 40 may include a fixing restriction part 41 and a fixing drive part 42.
  • the fixing restriction part 41 contacts each of the first lid body 140A and the second lid body 140B from the outside in the first direction D1 to restrict outward movement.
  • the fixing drive part 42 moves each of the first lid body 140A and the second lid body 140B outward in the first direction D1.
  • the fixing drive part 42 presses each of the first lid body 140A and the second lid body 140B against the fixing restriction part 41.
  • the fixing drive part 42 may press the lid body 140 against the fixing restriction part 41 by pulling the lid body 140 outward in the first direction D1.
  • the first lid body 140A, the electrode body 115, and the second lid body 140B are arranged in this order in the first direction D1.
  • the "outside” in the first direction D1 is the side away from the center of gravity of the electrode body 115 in the first direction D1.
  • the “inside” in the first direction D1 is the side closer to the center of gravity of the electrode body 115 in the first direction D1.
  • the fixed regulating portion 41 may contact the outer main surface G2 of the lid body 140, which is the outer surface in the first direction D1. As described below, the exterior film 130 is wrapped around the electrode unit 111 and contacts the side end surface G1 of the lid body 140 in a circumferential manner. Even in this case, the outer main surface G2 is not covered by the exterior film 130. The fixed regulating portion 41 can continue to contact the outer main surface G2 of the lid body 140. The fixed regulating portion 41 can stably fix the lid body 140.
  • the fixing device 40 may include a plurality of fixing restriction parts 41.
  • the fixing restriction parts 41 may be common to the first lid body 140A and the second lid body 140B.
  • the fixing restriction part 41 used for the first lid body 140A and the fixing restriction part 41 used for the second lid body 140B may be provided separately.
  • the fixing device 40 includes a fixed restricting portion 41 that contacts the first lid body 140A at two positions, and a fixed restricting portion 41 that contacts the second lid body 140B at two positions.
  • the fixed restricting portion 41 contacts the lid body 140 at two positions spaced apart in the second direction D2, which is the longitudinal direction of the lid body 140.
  • the fixed restricting portion 41 contacts the lid body 140 near both ends in the second direction D2, which is the longitudinal direction of the lid body 140.
  • the fixed restricting portion 41 is fixed to the exterior film 130 held by the first film holding portion 31 and the second film holding portion 32.
  • the fixed regulating portion 41 may contact the lid body 140 from the outside in the first direction D1 at only one position.
  • the fixed regulating portion 41 may contact the lid body 140 from the outside in the first direction D1 at three or more positions.
  • the fixed drive unit 42 may include an adsorption unit 43 that is adsorbed to the first lid body 140A and the second lid body 140B.
  • the adsorption unit 43 is adsorbed to the lid body 140 and can move outward in the first direction D1.
  • the lid body 140 moves outward in the first direction D1 together with the adsorption unit 43.
  • the lid body 140 is fixed in an appropriate position in the first direction D1 by contacting the fixed restriction unit 41.
  • the suction portion 43 may be suctioned to the outer main surface G2 of the lid body 140, which is the outer surface in the first direction D1.
  • the exterior film 130 is wrapped around the electrode unit 111 and contacts the side end surface G1 of the lid body 140 in a circumferential manner. Even in this case, the outer main surface G2 is not covered by the exterior film 130.
  • the fixed drive portion 42 can continue to contact the outer main surface G2 of the lid body 140.
  • the fixed drive portion 42 can stably fix the lid body 140.
  • the suction portion 43 is suctioned to the lid body 140 at a position between the contact positions of the two fixed restricting portions 41 with the lid body 140.
  • the suction portion 43 is located between the two fixed restricting portions 41 in the second direction D2, which is the longitudinal direction of the lid body 140. According to this example, the lid body 140 can be stably fixed in an appropriate position.
  • step S3 the electrode unit 111 is placed on the exterior film 130.
  • the electrode unit 111 is positioned at an appropriate position on the exterior film 130.
  • the electrode 115 of the electrode unit 111 may be positioned at an appropriate position on the exterior film 130.
  • the fixed regulating portion 41 is disposed at an appropriate position that is on the outside in the first direction D1 with respect to the exterior film 130.
  • the fixed driving portion 42 moves each lid body 140 outward in the first direction D1.
  • the fixed driving portion 42 presses the lid body 140 against the fixed regulating portion 41 positioned on the outside of each lid body 140 in the first direction.
  • the lid body 140 comes into contact with the fixed regulating portion 41, and is thus regulated from moving outward in the first direction D1. In this way, the lid body 140 is positioned at a position where it comes into contact with the fixed regulating portion 41 in the first direction D1, and is fixed in the first direction D1.
  • the lid body 140 is physically connected to the electrode body 115 via the terminal 117.
  • the terminal 117 is made of a thin metal plate or the like.
  • the terminal 117 may be flexible. That is, in the electrode body unit 111, the lid body 140 is movable relative to the electrode body 115. Even if the electrode body 115 is positioned relative to the exterior film 130 and fixed to the exterior film 130, the lid body 140 can move somewhat relative to the exterior film 130. As described below, the lid body 140 is joined to the exterior film 130. By fixing the lid body 140 to the exterior film 130 using the fixing device 40, the exterior film 130 can be appropriately joined to the side end surface G1 of the lid body 140 in step S4 described below. Therefore, the space between the lid body 140 and the exterior film 130 can be stably sealed.
  • the fixed drive unit 42 includes an adsorption unit 43.
  • the adsorption unit 43 can be adsorbed to the outer main surface G2 of the lid body 140 facing outward in the first direction D1. This allows the lid body 140 to be stably fixed to the exterior film 130 throughout the manufacture of the energy storage element intermediate body 110.
  • the suction portion 43 can be suctioned to the lid body 140 between two fixing restriction portions 41 that contact the same lid body 140. Therefore, the lid body 140 can be stably fixed in an appropriate position.
  • the first fixed restricting portion 41, the suction portion 43, and the second fixed restricting portion 41 are arranged in the longitudinal direction of the lid body 140. Therefore, the lid body 140 can be fixed more stably in an appropriate position.
  • fixing device 40 described above is merely one example and may be modified as appropriate.
  • one of the tapered protrusion 44A and the tapered recess 44B may be provided on the fixed regulating portion 41 or the fixed driving portion 42.
  • the other of the tapered protrusion 44A and the tapered recess 44B may be provided on the first lid body 104A and the second lid body 104B.
  • the first lid body 140A and the second lid body 140B can be automatically positioned in a direction non-parallel to the first direction D1.
  • the tapered protrusion 44A is a tapered protrusion. That is, the tapered protrusion 44A is thick at the base end and thin at the tip end.
  • the tapered recess 44B receives the tapered protrusion 44A.
  • the tapered recess 44B tapers toward the bottom. That is, the tapered recess 44B is wide at the opening and narrow at the deepest part. According to this example, when the tapered protrusion 44A and the tapered recess 44B approach the first direction D1, they are automatically positioned in a direction perpendicular to the first direction D1.
  • the lid body 140 can be positioned in a direction perpendicular to the first direction D1, and the lid body 140 can be fixed in the appropriate position. Furthermore, according to this example, the lid body 140 can be positioned in a rotational direction about an axis parallel to the first direction D1, and the lid body 140 can be fixed in the appropriate position.
  • the fixing restriction portion 41 corresponding to each lid body 140 includes an adsorption portion 43 and two tapered protrusions 44A.
  • the lid body 140 includes two tapered recesses 44B.
  • the two tapered protrusions and the two tapered recesses 44B are positioned apart in the second direction D2, which is the longitudinal direction of the lid body 140. Therefore, the lid body 140 can be fixed more stably in an appropriate position.
  • the lid body 140 can also be fixed in a direction perpendicular to the first direction D1 and in a rotational direction about an axis parallel to the first direction D1.
  • a tapered convex portion 44A or a tapered concave portion 44B may be provided in the fixed restricting portion 41.
  • the lid body 140 may include a tapered concave portion 44B or a tapered convex portion 44A at a position facing the tapered convex portion 44A or the tapered concave portion 44B in the first direction D1.
  • each lid body 140 and fixing device 40 may be provided with a pair of tapered protrusions 44A and tapered recesses 44B.
  • Each lid body 140 and fixing device 40 may be provided with three or more pairs of tapered protrusions 44A and tapered recesses 44B.
  • the first lid body 140A and the second lid body 140B may each include an axial protrusion 142 that protrudes outward in the first direction D1.
  • the axial protrusion 142 includes a notch 143 that opens in a direction non-parallel to the first direction D1.
  • the fixed restricting portion 41 includes a claw portion 45 that can be inserted into the notch 143.
  • the notch 143 may open in a direction perpendicular to the first direction D1.
  • the notch 143 may extend linearly in a direction perpendicular to the first direction D1.
  • the notch 143 may be circumferential around the shaft-shaped protrusion 142.
  • the claw portion 45 of the fixed restriction portion 41 may protrude in a direction perpendicular to the first direction D1.
  • the claw portion 45 may extend linearly in a direction perpendicular to the first direction D1.
  • the claw portion 45 may be circumferential. As shown in FIG.
  • the fixed drive unit 42 may be movable not only in the first direction D1, but also in a direction non-parallel to the first direction D1.
  • the fixed drive unit 42 may be movable in a direction perpendicular to the first direction D1. By moving the fixed drive unit 42 in a direction non-parallel to the first direction D1, the claw portion 45 can be inserted into the notch 143.
  • the fixing device 40 may include a clamper 46.
  • the clamper 46 includes a plurality of clamp pieces 46a. Each clamp piece 46a is movable in a direction non-parallel to the first direction D1.
  • the clamp pieces 46a can approach each other and move away from each other.
  • the clamp pieces 46a can hold the shaft-shaped protrusion 142 in a direction non-parallel to the first direction D1, for example, in a direction perpendicular to the first direction D1.
  • the movement of the lid body 140 in a direction perpendicular to the first direction D1 can be restricted.
  • the lid body 140 can be fixed in a direction perpendicular to the first direction D1.
  • each lid 140 may include two or more axial protrusions 142, and one or more clampers 46 may clamp the two or more axial protrusions 142.
  • the lid 140 may be fixed in a direction perpendicular to the first direction D1 and in a rotational direction about an axis parallel to the first direction D1.
  • the axial convex portion 142 is used in the manufacturing process of the energy storage element intermediate body 110.
  • the axial convex portion 142 may become unnecessary in the energy storage element 100.
  • the axial convex portion 142 may be removed from the energy storage element intermediate body 110.
  • the fixed drive unit 42 may be removable from the lid body 140.
  • the axial convex portion 142 includes a linear groove portion 144 at the base end.
  • the axial convex portion 142 may be removable from the lid body 140 by bending it at the linear groove portion 144.
  • the fixed regulating portion 41 is omitted.
  • the fixing device 40 shown in FIG. 10B may include the fixed regulating portion 41.
  • the clamper 46 may function as the fixed regulating portion 41.
  • a dedicated fixed regulating portion 41 can be omitted.
  • the clamp piece 46a of the clamper 46 shown in FIG. 10B can contact the outer main surface G2 of the lid body 140 and can function as the fixed regulating portion 41.
  • the cover 140 may include spaced apart contact pieces 145.
  • the contact pieces 145 may be partition walls that surround the recess 2a and form the recess 2a, as shown in FIG. 5D and FIG. 5H, etc. In the example shown in FIG. 5C and FIG. 5D, the contact pieces 145 are circumferential.
  • the fixing device 40 includes a plurality of clamp pieces 46a.
  • Each clamp piece 46a is movable in a direction non-parallel to the first direction D1.
  • the clamp pieces 46a can move toward each other and away from each other.
  • the clamp pieces 46a come into contact with the contact piece 145 by moving away from each other in a direction non-parallel to the first direction D1.
  • the clamp pieces 46a each come into contact with the contact piece 145, thereby restricting the movement of the lid body 140 in a direction perpendicular to the first direction D1.
  • the lid body 140 can also be fixed in a direction perpendicular to the first direction D1.
  • the clamper 46 may move outward in the first direction D1 with the clamp piece 46a in contact with the contact piece 145.
  • the clamper 46 may constitute the fixed drive unit 42, and the suction unit 43 may constitute the fixed restriction unit 41.
  • the fixed regulating portion 41 is omitted.
  • the fixing device 40 shown in FIG. 10C may include the fixed regulating portion 41.
  • the clamper 46 may function as the fixed regulating portion 41.
  • a dedicated fixed regulating portion 41 can be omitted.
  • the clamp piece 46a of the clamper 46 shown in FIG. 10C can contact the outer main surface G2 of the lid body 140 and can function as the fixed regulating portion 41.
  • FIG. 10D is a perspective view showing a specific example of a fixing device 40 including a fixing restricting portion 41 and a fixing driving portion 42.
  • the fixing device 40 shown in FIG. 10D may be applied to a lid body 140 including a recess G2a in the outer main surface G2 as shown in FIG. 5C and FIG. 5D.
  • the fixed regulating portion 41 and the fixed driving portion 42 are each movable in the first direction D1.
  • a pair of fixed regulating portions 41 are provided spaced apart in the second direction D2.
  • An adsorption portion 43 constituting the fixed driving portion 42 is provided between the pair of fixed regulating portions 41.
  • four adsorption portions 43 are arranged in the second direction D2.
  • Each fixed regulating part 41 contacts the lid body 140, which is held by the fixed driving part 42 and driven outward in the first direction D1, from the outside in the first direction D1.
  • the fixed regulating part 41 and the fixed driving part 42 can fix the lid body 140 in the first direction D1.
  • each fixed regulating portion 41 is located in the recess G2a of the lid body 140.
  • Each fixed regulating portion 41 contacts the contact piece 145 that forms the recess G2a from the second direction D2.
  • the lid body 140 can be fixed in the second direction D2.
  • Each fixed regulating portion 41 may contact the contact piece 145 that forms the recess G2a from the third direction D3.
  • the lid body 140 can be fixed in the third direction D3.
  • FIG. 10E is a perspective view showing another specific example of a fixing device 40 including a fixing restricting portion 41 and a fixing driving portion 42.
  • the fixing device 40 shown in FIG. 10E may be applied to a lid body 140 including a protruding portion G2b on the outer main surface G2 as shown in FIG. 5E and FIG. 5F.
  • the fixed regulating portion 41 and the fixed driving portion 42 are each movable in the first direction D1.
  • a pair of fixed regulating portions 41 are provided spaced apart in the second direction D2.
  • a clamper 46 constituting the fixed driving portion 42 is provided between the pair of fixed regulating portions 41.
  • the clamper 46 includes a pair of clamp pieces 46a that are movable in the second direction D2. When the pair of clamp pieces 46a approach each other in the second direction D2, the pair of clamp pieces 46a can hold the convex portion G2b by sandwiching it from both sides in the second direction D2. When the clamper 46 holds the convex portion G2b, the lid body 140 can be fixed in the second direction D2.
  • the lid body 140 to which the fixing device 40 shown in FIG. 10E is applied may include a recess G2a in the outer main surface G2 as shown in FIG. 5G and FIG. 5H.
  • Each fixing restricting portion 41 may be inserted into the recess G2a of the lid body 140.
  • Each fixing restricting portion 41 may contact the contact piece 145 forming the recess G2a from the second direction D2.
  • the fixing restricting portion 41 contacts the contact piece 145 from the second direction D2, thereby fixing the lid body 140 in the second direction D2.
  • Each fixing restricting portion 41 may contact the contact piece 145 forming the recess G2a from the third direction D3.
  • the fixing restricting portion 41 contacts the contact piece 145 from the third direction D3, thereby fixing the lid body 140 in the third direction D3.
  • FIGS. 10F to 10H show yet another specific example of the fixing device 40.
  • the lid body 140 may include a recess G2a in the outer main surface G2 that is the outside in the first direction D1.
  • the fixing device 40 may include a chuck body 47 that is inserted into the recess G2a from the outside in the first direction D1.
  • the chuck body 47 holds each lid body 140 by expanding the width in the recess G2a in the direction perpendicular to the first direction D1.
  • the fixing device 40 By using the fixing device 40, the appropriate relative positions of the first and second lid bodies 140A and 140B and the exterior film 130 can be maintained. Therefore, by using the first joining device 70 described below, the first and second lid bodies 140A and 140B and the exterior film 130 can be stably joined in the appropriate relative positions.
  • the chuck body 47 also holds each lid body 140 by expanding the width in the direction perpendicular to the first direction D1 within the recess G2a. Therefore, the first lid body 140A and the second lid body 140B can be fixed while automatically positioning them in the direction perpendicular to the first direction D1.
  • the chuck body 47 is inserted into the recess G2a from the outside in the first direction D1. Therefore, the fixing device 40 can be disposed on the outside of the first lid body 140A and the second lid body 140B in the first direction D1. This allows the fixing device 40 to be made compact.
  • the fixing device 40 may include multiple chuck bodies 47.
  • One chuck body 47 may be used commonly for the first lid body 140A and the second lid body 140B.
  • the chuck body 47 used for the first lid body 140A and the chuck body 47 used for the second lid body 140B may be provided separately.
  • the fixing device 40 includes two chuck bodies 47 inserted into the two recesses G2a of the first lid body 140A and two chuck bodies 47 inserted into the two recesses G2a of the second lid body 140B.
  • the two chuck bodies 47 contact the lid body 140 at two positions spaced apart in the second direction D2, which is the longitudinal direction of the lid body 140.
  • the two chuck bodies 47 may contact the lid body 140 near both ends in the second direction D2, which is the longitudinal direction of the lid body 140.
  • the chuck body 47 is fixed to the exterior film 130 held by the first film holding portion 31 and the second film holding portion 32.
  • the first lid body 140A and the second lid body 140B can be fixed while positioning them in a rotational direction about an axis parallel to the first direction D1.
  • two chuck bodies 47 are arranged in the second direction D2, which is the longitudinal direction of the lid body 140. Therefore, the lid body 140 can be more stably fixed in an appropriate position.
  • the chuck body 47 may be inserted from the outside in the first direction D1 into a single recess G2a provided in each lid body.
  • the chuck body 47 may be inserted from the outside in the first direction D1 into three or more recesses G2a provided in each lid body.
  • each chuck body 47 includes a plurality of widening pieces 472 that are inserted into the recess G2a, and a widening piece holding portion 471 that operably holds the plurality of widening pieces 472.
  • the width of the chuck body 47 in a direction perpendicular to the first direction D1 changes as the plurality of widening pieces 472 move relative to the widening piece holding portion 471.
  • the first lid body 140A and the second lid body 140B can be stably fixed with a simple configuration and simple control using the chuck body 47.
  • multiple widening pieces 472 are held at the tip of the widening piece holding portion 471.
  • the widening pieces 472 can move relative to the widening piece holding portion 471 along a direction perpendicular to the central axis 47C of the chuck body 47.
  • the multiple widening pieces 472 can move relative to the widening piece holding portion 471 in a radial direction from the central axis 47C of the chuck body 47.
  • Two widening pieces 472 may be provided, making the tip of the chuck body 47 widenable.
  • Three or four widening pieces 472 may be provided, making the tip of the chuck body 47 widenable (expandable in diameter).
  • Each chuck body 47 may include a push pin 473 held by the widening piece holding portion 471.
  • the push pin 473 is movable within the widening piece holding portion 471.
  • the push pin 473 moves along the central axis 47C of the chuck body 47. As shown in FIG. 10G, when the tip of the chuck body 47 is inserted into the recess G2a, the central axis 47C of the chuck body 47 extends in the first direction D1.
  • the push pin 473 is positioned on the outside in the first direction D1.
  • the multiple widening pieces 472 are positioned close to the central axis 47C of the chuck body 47, and the width of the chuck body 47 is narrowed.
  • the push pin 473 moves inward in the first direction D1.
  • the push pin 473 is inserted between the multiple widening pieces 472.
  • the push pin 473 comes into contact with the multiple widening pieces 472 and pushes each of the widening pieces 472 in a direction away from the central axis 47C.
  • Each of the widening pieces 472 comes into contact with the inner wall of the recess G2a.
  • the width of the tip of the chuck body 47 expands until it comes into contact with the inner wall of the recess G2a of the lid body 140, and the chuck body 47 holds the lid body 140.
  • the surfaces of the widening piece 472 and the push pin 473 that come into contact with each other are tapered surfaces that are inclined with respect to the central axis 47C of the chuck body 47, which is the movement direction of the push pin 473. Therefore, by moving the push pin 473 in the movement direction, the widening piece 472 can be moved smoothly in a direction perpendicular to the movement direction of the push pin 473.
  • the recess G2a is formed as a portion that is recessed further than other portions of the outer main surface G2.
  • a cylindrical protrusion may be formed on the outer main surface D2 of the lid body 140, and the recess G2a may be formed within the cylindrical protrusion.
  • the recess G2a may be formed by a hollow portion of the cylindrical protrusion.
  • step S4 is performed in which the exterior film 130 wrapped around the electrode unit 111 is joined to the side end surface G1.
  • the exterior film 130 may be wrapped around the electrode unit 111, and the exterior film 130 may be joined to the lid 140.
  • the winding device 50 and the first joining device 70 of the manufacturing apparatus 20 may be used.
  • the exterior film 130 may be wrapped around the electrode unit 111 so as to be in circumferential contact with each of the side end faces G1 of the first lid body 140A and the second lid body 140B.
  • the exterior film 130 is joined to the side end face G1 facing the exterior film 130.
  • the first side edge portion A1 (see FIG. 4B) of the exterior film 130 is joined to the side end face G1 of the first lid body 140A.
  • the second side edge portion A2 (see FIG. 4B) of the exterior film 130 is joined to the side end face G1 of the second lid body 140B.
  • step S4 the exterior film 130 may be wound circumferentially around the electrode unit 111, and then the exterior film 130 may be joined to the side end surface G1 of the lid 140.
  • the step of winding the exterior film 130 circumferentially around the electrode unit 111 and the step of joining the exterior film 130 to the side end surface G1 may be performed in this order.
  • the step of wrapping the exterior film 130 around the electrode unit 111 and joining it to the lid 140 may include steps S41, S42, S43, S44, and S45.
  • step S41 the exterior film 130 is joined to the first side end face G11 of the lid 140.
  • step S42 the exterior film 130 is wrapped around the electrode unit 111, and the exterior film 130 is brought into contact with the second side end face G12 and the third side end face G13.
  • step S43 the exterior film 130 is joined to the second side end face G12 and the third side end face G13 of the lid 140.
  • step S44 the exterior film 130 is wrapped around the electrode unit 111, and the exterior film 130 is brought into contact with the fourth side end face G14.
  • step S45 the exterior film 130 is bonded to the fourth side end surface G14 of the lid 140.
  • step S4 the winding device 50 and the first joining device 70 of the manufacturing device 20 are used.
  • the winding device 50 winds the exterior film 130 around the electrode unit 111 so that the side end surface G1 of each of the first lid body 140A and the second lid body 140B and the exterior film 130 are in circumferential contact with each other.
  • the first joining device 70 joins the side end surface G1 and the exterior film 130.
  • the first joining device 70 may join the side end surface G1 and the exterior film 130 by heat sealing.
  • the first joining device 70 may form a circumferential opening seal portion S1 around the periphery of the side end surface G1.
  • FIG. 7B included in step S4 will be described below together with the configuration of the winding device 50 and the first joining device 70 used in the step.
  • the first joining device 70 may join the lid body 140 and the exterior film 130 by other joining methods such as ultrasonic joining or high frequency joining.
  • step S41 as shown in FIG. 11A, the exterior film 130 is joined to the first side end surface G11.
  • the electrode unit 111 is located on the first portion 131A (see FIG. 4B) of the exterior film 130.
  • the fixing device 40 fixes the first lid body 140A and the second lid body 140B to appropriate positions relative to the exterior film 130.
  • the first lid body 140A is located on the first side edge portion A1 (see FIG. 4B) in the first portion 131A of the exterior film 130.
  • the second lid body 140B is located on the second side edge portion A2 (see FIG. 4B) in the first portion 131A of the exterior film 130.
  • the first bonding device 70 may include a first seal bar 71A that contacts a portion of the exterior film 130 located on the first side end surface G11 and heats the exterior film 130 while pressing it against the first side end surface G11.
  • the illustrated first bonding device 70 includes a first seal bar 71A and a receiving bar 72A. As shown in FIG. 11A, the first seal bar 71A and the receiving bar 72A face each other. The exterior film 130 and the electrode unit 111 are located between the first seal bar 71A and the receiving bar 72A.
  • step S41 which is mainly shown in FIG. 11A, the exterior film 130 is joined to the first side end surface G11 using the first joining device 70 described above.
  • the exterior film 130 may be joined to the first side end surface G11 as described below.
  • the lid body 140 is fixed by the fixing device 40, continuing from step S3, which was performed immediately before.
  • step S41 shown in FIG. 11A the first seal bar 71A and the receiving bar 72A are pressed toward each other.
  • the exterior film 130 is positioned between the first seal bar 71A and the electrode unit 111.
  • the first seal bar 71A has a built-in heating mechanism.
  • the first seal bar 71A presses the exterior film 130 toward the lid body 140 while heating it.
  • the exterior film 130 is fused to the side end surface G1 of the lid body 140.
  • the heat-sealable resin layer L3 of the exterior film 130 is fused to the side end surface G1.
  • the first seal bar 71A heats the first side edge A1 and the second side edge A2 located in the first part 131A of the exterior film 130.
  • the first side edge A1 located in the first part 131A faces the first side end face G11 of the first lid body 140A.
  • the first seal S11 of the opening seal S1 is formed between the first side edge A1 located in the first part 131A and the first side end face G11 of the first lid body 140A.
  • the second side edge A2 located in the first part 131A faces the first side end face G11 of the second lid body 140B.
  • the first seal S11 of the opening seal S1 is formed between the second side edge A2 located in the first part 131A and the first side end face G11 of the second lid body 140B.
  • the first joining device 70 may include a bar drive unit 73 that drives a seal bar included in the first joining device 70.
  • the bar drive unit 73 moves the seal bar included in the first joining device 70.
  • the bar drive unit 73 moves the seal bar included in the first joining device 70, and the seal bar pushes the exterior film 130 toward the side end surface G1.
  • the bar drive unit 73 may move the seal bar to a preset pushing amount. Instead of moving the seal bar until a constant pressure is reached, by moving the seal bar until a preset pushing amount, i.e., pushing length, is reached, it is possible to prevent the seal bar from being pushed excessively toward the exterior film 130 and the lid 140. For example, it is possible to prevent the thermoplastic resin constituting the heat-sealable resin layer L3 from leaking out from between the exterior film 130 and the lid 140.
  • the first seal bar 71A is driven by a bar drive unit 73.
  • the first seal bar 71A includes a protruding contact piece 71k.
  • the protruding contact piece 71k protrudes from the main body of the first seal bar 71A in a direction non-parallel to the third direction D3, which is the operating direction of the first seal bar 71A, for example, in a direction perpendicular to the third direction D3.
  • the bar drive unit 73 includes a movement restriction piece 73a that faces the protruding contact piece 71k.
  • the movement restriction piece 73a is held in a position facing the protruding contact piece 71k along the movement direction of the first seal bar 71A.
  • the movement restriction piece 73a is located in front of the protruding contact piece 71k in the movement direction when the first seal bar 71A pushes the exterior film 130 toward the lid body 140.
  • the movement of the first seal bar 71A toward the exterior film 130 is controlled to a preset pushing amount.
  • One first seal bar 71A may extend in the first direction D1 and press both the first side edge A1 and the second side edge A2 in the first part 131A of the exterior film 130 toward the lids 140A and 140B while heating them. That is, the first seal bar 71A that presses the first side edge A1 of the exterior film 130 toward the first lid 140A while heating them, and the first seal bar 71A that presses the second side edge A2 toward the second lid 140B while heating them, may be integrally configured. Alternatively, the first seal bar 71A that presses the first side edge A1 of the exterior film 130 toward the first lid 140A while heating them, and the first seal bar 71A that presses the second side edge A2 toward the second lid 140B while heating them, may be provided separately.
  • the first joining device 70 may include a second seal bar 71B, a third seal bar 71C, and a fourth seal bar 71D in addition to the first seal bar 71A, as described below.
  • a bar drive unit 73 that moves the seal bars to a preset pressing amount can also be applied to the second to fourth seal bars 71B to 71D.
  • the seal bar that presses the first side edge A1 toward the first lid body 140A while heating it, and the seal bar that presses the second side edge A2 toward the second lid body 140B while heating it may be configured as an integral unit or may be provided separately.
  • first to fourth seal bars 71A to 71D are provided separately, but this is not limited to the example. Two or more of the first to fourth seal bars 71A to 71D may be a common seal bar.
  • first seal bar 71A may be the same seal bar as any of the second to fourth seal bars 71B to 71D.
  • the fourth seal bar 71D may be the same seal bar as any of the first to third seal bars 71A to 71C.
  • step S42 is carried out in which the exterior film 130 is wound around the electrode unit 111.
  • the winding device 50 of the manufacturing apparatus 20 is used.
  • step S42 the exterior film 130 is wound around the electrode unit 111 so that the exterior film 130 contacts the second side end face G12.
  • the exterior film 130 is wound around the electrode unit 111 so that the exterior film 130 contacts the third side end face G13.
  • the winding device 50 may include a winding auxiliary body 51 that adsorbs the side end surface G1 of the lid body 140, as shown in Figures 11B and 11C.
  • the winding auxiliary body 51 can regulate the movement of the electrode unit 111 when the exterior film 130 is wound around the electrode unit 111.
  • the winding auxiliary body 51 may include a base surface 52a, a first auxiliary surface 52b, and a second auxiliary surface 52c.
  • the base surface 52a contacts the fourth side end surface G14.
  • the first auxiliary surface 52b connects to the base surface 52a.
  • the first auxiliary surface 52b may extend parallel to the third direction D3 when the base surface 52a contacts the fourth side end surface G14.
  • the first auxiliary surface 52b may extend parallel to the third direction D3 on an extension of the second side end surface G12 when the base surface 52a contacts the fourth side end surface G14.
  • the second auxiliary surface 52c connects to the base surface 52a.
  • the second auxiliary surface 52c may extend parallel to the third direction D3 when the base surface 52a contacts the fourth side end surface G14.
  • the second auxiliary surface 52c may extend parallel to the third direction D3 on the extension of the third side end surface G13 when the base surface 52a is in contact with the fourth side end surface G14.
  • the base surface 52a may be capable of being adsorbed to the fourth side end surface G14.
  • the winding device 50 may adsorb the fourth side end surface G14 to the base surface 52a.
  • the first auxiliary surface 52b may be capable of being adsorbed to the exterior film 130.
  • the winding device 50 may adsorb the exterior film 130 to the first auxiliary surface 52b.
  • the second auxiliary surface 52c may be capable of being adsorbed to the exterior film 130.
  • the winding device 50 may adsorb the exterior film 130 to the second auxiliary surface 52c.
  • One winding auxiliary body 51 may extend in the first direction D1 and face both the first side edge portion A1 and the second side edge portion A2 of the exterior film 130 and both the first lid body 140A and the second lid body 140B from a direction perpendicular to the first direction D1. That is, the winding auxiliary body 51 acting on the first side edge portion A1 and the first lid body 140A and the winding auxiliary body 51 acting on the second side edge portion A2 and the second lid body 140B may be integrally configured. Alternatively, the winding auxiliary body 51 acting on the first side edge portion A1 and the first lid body 140A and the winding auxiliary body 51 acting on the second side edge portion A2 and the second lid body 140B may be provided separately.
  • the winding device 50 may include a pressing body 58.
  • the pressing body 58 moves on the exterior film 130 while pressing the exterior film 130 toward the side end surface G1.
  • the pressing body 58 shown in FIG. 11C is a roll.
  • the roll constituting the pressing body 58 moves while rotating on the exterior film 130.
  • the pressing body 58 allows the exterior film 130 to be stably brought into contact with the side end surface G1.
  • One pressing body 58 may extend in the first direction D1 and face both the first side edge A1 and the second side edge A2 of the exterior film 130 and both the first lid body 140A and the second lid body 140B from a direction perpendicular to the first direction D1. That is, the pressing body 58 acting on the first side edge A1 and the first lid body 140A and the pressing body 58 acting on the second side edge A2 and the second lid body 140B may be integrally configured. Alternatively, the pressing body 58 acting on the first side edge A1 and the first lid body 140A and the pressing body 58 acting on the second side edge A2 and the second lid body 140B may be provided separately.
  • the pressing body 58 is a roll, but the pressing body 58 is not limited to this example.
  • the pressing body 58 may be bar-shaped.
  • the bar-shaped pressing body 58 may function as a squeegee.
  • a pressing body 58 may be used to more reliably bring the exterior film 130 into contact with the first side end surface G11.
  • the winding device 50 may include a gripping portion 60 that grips the exterior film 130.
  • the winding device 50 may include a plurality of gripping portions 60.
  • the plurality of gripping portions 60 may be arranged along the central axis when winding the exterior film 130 around the electrode unit 111.
  • the plurality of gripping portions 60 may be arranged in the first direction D1.
  • the gripping portion 60 is configured as a clamper that grips the edge of the exterior film 130.
  • the configuration of the gripping portion 60 is not limited.
  • the gripping portion 60 may include a film holding portion 29 having the same configuration as the first film holding portion 31 described with reference to FIG. 36A to FIG. 36E.
  • the tensioning device 28 may include a guide rail 281 and a holding drive portion 282 in addition to the film holding portion 29 as the gripping portion 60.
  • the first film holding part 31 and the second film holding part 32 of the film supply device 30 may be used to hold the exterior film 130 instead of the gripping part 60. That is, the winding device 50 may include the first film holding part 31 and the second film holding part 32. The same first film holding part 31 and second film holding part 32 may be included in both the film supply device 30 and the winding device 50. The first film holding part 31 and the second film holding part 32 may continue to hold the exterior film 130 in step S4 and configuration S5 as well.
  • the winding device 50 may include a surface monitoring unit 64 and a winding controller 65.
  • the surface monitoring unit 64 monitors the surface condition of the exterior film 130 gripped by the gripping unit 60.
  • the winding controller 65 controls the operation of the gripping unit 60.
  • the winding controller 65 may control the operation of the gripping unit 60 based on the monitoring results by the surface monitoring unit 64.
  • step S42 which is mainly shown in Figures 11B and 11C, the exterior film 130 is wrapped around the electrode unit 111.
  • the exterior film 130 may be wrapped around the electrode unit 111 as described below.
  • step S42 continuing from step S3, the lid 140 is fixed by the fixing device 40.
  • step S41 which is performed immediately before step S42, the first side edge A1 of the first part 131A of the exterior film 130 is joined to the first side end surface G11 of the first lid 140A, and the second side edge A2 is joined to the first side end surface G11 of the second lid 140B.
  • step S42 first, the winding auxiliary body 51 moves relative to the electrode body unit 111.
  • the base surface 52a of the winding auxiliary body 51 contacts the electrode body unit 111.
  • the base surface 52a may contact both the fourth side end surface G14 of the first cover body 140A and the fourth side end surface G14 of the second cover body 140B.
  • the base surface 52a may contact the electrode body 115 located between the first cover body 140A and the second cover body 140B. If the base surface 52a is configured as an adsorption surface, the winding device 50 may adsorb the electrode body unit 111 to the base surface 52a.
  • the storage element intermediate body 110 and the exterior film 130 can be stably held using the auxiliary winding body 51.
  • the pressing body 58 moves while contacting the exterior film 130.
  • the pressing body 58 presses the exterior film 130 toward the electrode unit 111, causing the exterior film 130 to contact the electrode unit 111.
  • the film supply device 30 may release the exterior film 130. That is, the first film holding unit 31 and the second film holding unit 32 may release the exterior film 130.
  • the first film holding unit 31 and the second film holding unit 32 may continue to hold the exterior film 130 in step S4 and configuration S5 without using the gripping unit 60.
  • the pressing body 58 causes the first side edge A1 in the second part 131B of the exterior film 130 to contact the second side end surface G12 of the first lid body 140A.
  • the second side edge A2 in the second part 131B of the exterior film 130 to contact the second side end surface G12 of the second lid body 140B.
  • the pressing body 58 causes the first side edge A1 in the third part 131C of the exterior film 130 to contact the third side end surface G13 of the first lid body 140A.
  • the second side edge A2 in the third part 131C of the exterior film 130 to contact the third side end surface G13 of the second lid body 140B.
  • the operation of the pressing body 58 bringing the exterior film 130 into contact with the first lid body 140A and the operation of the pressing body 58 bringing the exterior film 130 into contact with the second lid body 140B may be performed simultaneously in parallel.
  • the operation of the pressing body 58 bringing the exterior film 130 into contact with the first lid body 140A and the operation of the pressing body 58 bringing the exterior film 130 into contact with the second lid body 140B may be performed at different times. When performed at different times, one pressing body 58 may move over the first lid body 140A and the second lid body 140B.
  • multiple pressing bodies 58 operate in parallel, causing the exterior film 130 to contact the first lid body 140A and the second lid body 140B in parallel.
  • the first lid body 140A and the second lid body 140B are pressed from both sides in the second direction by multiple pressing bodies 58. Therefore, the postures of the first lid body 140A and the second lid body 140B are stable, and the exterior film 130 can be stably contacted with the first lid body 140A and the second lid body 140B.
  • the pressing body 58 may further move on the winding auxiliary body 51.
  • the pressing body 58 causes the exterior film 130 to contact the first auxiliary surface 52b of the winding auxiliary body 51. If the first auxiliary surface 52b is configured as an adhesive surface, the winding device 50 may adsorb the exterior film 130 to the first auxiliary surface 52b as the pressing body 58 moves.
  • the pressing body 58 causes the exterior film 130 to come into contact with the second auxiliary surface 52c of the winding auxiliary body 51. If the second auxiliary surface 52c is configured as an adhesive surface, the winding device 50 may adsorb the exterior film 130 to the second auxiliary surface 52c as the pressing body 58 moves.
  • the operation of the pressing body 58 bringing the exterior film 130 into contact with the first auxiliary surface 52b and the operation of the pressing body 58 bringing the exterior film 130 into contact with the second auxiliary surface 52c may be performed simultaneously in parallel.
  • the operation of the pressing body 58 bringing the exterior film 130 into contact with the first auxiliary surface 52b and the operation of the pressing body 58 bringing the exterior film 130 into contact with the second auxiliary surface 52c may be performed at different times. When performed at different times, one pressing body 58 may move over the first auxiliary surface 52b and the second auxiliary surface 52c.
  • multiple pressing bodies 58 operate in parallel, causing the exterior film 130 to contact the first auxiliary surface 52b and the second auxiliary surface 52c in parallel.
  • the winding auxiliary body 51 is pressed from both sides in the second direction by multiple pressing bodies 58. Therefore, the posture of the winding auxiliary body 51 is stable, and the exterior film 130 can be stably contacted with the first auxiliary surface 52b and the second auxiliary surface 52c.
  • the gripping portion 60 grips the exterior film 130.
  • the gripping portion 60 may apply tension to the exterior film 130.
  • the gripping portion 60 is a tension applying device 28 that applies tension to the exterior film 130.
  • the exterior film 130 can be maintained in a taut state. For example, it is possible to prevent a gap from occurring between the side end surface G1 and the exterior film 130.
  • the operation of the gripping unit 60 may be controlled by a surface monitoring unit 64 and a winding controller 65.
  • the surface monitoring unit 64 monitors the surface condition of the exterior film 130 to which tension has been applied by the gripping unit 60. If deformation such as wrinkles or folds occurs in the exterior film 130, the operation of the gripping unit 60 is controlled using the winding controller 65. This allows the exterior film 130 to be maintained in a taut state.
  • the timing at which the gripping portion 60 starts gripping the film can be set appropriately.
  • the gripping portion 60 may grip the exterior film 130 before the pressing body 58 comes into contact with the exterior film 130.
  • the gripping portion 60 may guide the exterior film 130 onto the electrode unit 111, may guide the exterior film 130 onto the first auxiliary surface 52b, or may guide the exterior film 130 onto the second auxiliary surface 52c.
  • the gripping portion 60 may grip the exterior film 130 before the exterior film 130 starts to be attached to the first auxiliary surface 52b and the second auxiliary surface 52c. According to this example, the exterior film 130 is held by the first auxiliary surface 52b and the second auxiliary surface 52c in a taut state due to the application of tension.
  • the gripping portion 60 may grip the exterior film 130 while the exterior film 130 is being adhered to the first auxiliary surface 52b and the second auxiliary surface 52c. In this example, when the gripping portion 60 applies tension to the exterior film 130, the adhesion by the first auxiliary surface 52b and the second auxiliary surface 52c may be stopped.
  • step S42 the exterior film 130 bonded to the first side end surface G11 comes into contact with the second side end surface G12 and is further spread out onto the first auxiliary surface 52b.
  • step S42 the exterior film 130 bonded to the first side end surface G11 comes into contact with the third side end surface G13 and is further spread out onto the second auxiliary surface 52c.
  • step S42 is completed.
  • the exterior film 130 bonded to the first side end surface G11 comes into contact with the second side end surface G12 and is further spread out onto the first auxiliary surface 52b.
  • the exterior film 130 bonded to the first side end surface G11 comes into contact with the third side end surface G13 and is further spread out onto the second auxiliary surface 52c.
  • the first auxiliary surface 52b is located on an extension of the second side end surface G12. Therefore, the exterior film 130 can be spread over the second side end surface G12 and the first auxiliary surface 52b while preventing deformation of the exterior film 130, such as wrinkles or folds.
  • the second auxiliary surface 52c is located on an extension of the third side end surface G13. Therefore, the exterior film 130 can be spread over the third side end surface G13 and the second auxiliary surface 52c while suppressing deformation of the exterior film 130, such as wrinkles and folds.
  • the gripping unit 60 of the manufacturing device 20 functions as a tension applying device 28 that applies tension to the exterior film 130.
  • the gripping unit 60 of the tension applying device 28 included in the manufacturing device 20 is not limited to the example shown in FIG. 13 etc.
  • the gripping unit 60 may have various configurations capable of gripping the exterior film 130.
  • the gripping unit 60 may include a film holding unit 29 having the same configuration as the first film holding unit 31 described with reference to Figures 36A to 36E.
  • the tensioning device 28 may include a guide rail 281 and a holding drive unit 282 in addition to the film holding unit 29 as the gripping unit 60.
  • the tensioning device 28 including the film holding unit 29 can effectively prevent the occurrence of deformations such as wrinkles and folds in the exterior film 130. Therefore, the formation of a gap between the exterior film 130 and the lid 140 can be effectively prevented.
  • the winding device 50 may include the first film holding portion 31 as the gripping portion 60. That is, the first film holding portion 31 may be a component of the film supply device 30 as well as a component of the winding device 50.
  • the film supply device 30 may include a surface monitoring portion 64 and a winding controller 65. According to this example, it is not necessary to transfer the exterior film 130 from the film supply device 30 to the winding device 50. Therefore, the occurrence of wrinkles, folds, etc. in the exterior film 130 can be more efficiently suppressed.
  • the winding device 50 may further include a second film holding section 32. That is, the second film holding section 32 may be a component of the film supply device 30 as well as a component of the winding device 50.
  • the manufacturing apparatus 20 may include a pair of nip rolls as the tension applying device 28.
  • the pair of nip rolls can apply tension to the exterior film 130 by rotating while nipping the exterior film 130.
  • the manufacturing apparatus 20 may include a tensioning device 28 shown in FIG. 14A and FIG. 14B.
  • the tensioning device 28 shown in FIG. 14A and FIG. 14B includes an inverted crown roll 63A and a nip roll 63B.
  • the inverted crown roll 63A and the nip roll 63B rotate while nipping the exterior film 130.
  • tension is applied to the exterior film 130, placing it in a taut state.
  • the roll diameter of the inverted crown roll 63A is not constant at each position along its rotation axis.
  • the roll diameter of the inverted crown roll 63A is smallest at the center along the rotation axis.
  • the roll diameter of the inverted crown roll 63A increases as it moves away from the center along the rotation axis.
  • the roll diameter of the nip roll 63B may be constant at each position along its rotation axis.
  • the tension applying device 28 which includes the inverted crown roll 63A, can apply force to the exterior film 130 so as to spread the exterior film 130 in a direction along the rotation axis of the inverted crown roll 63A. This makes it possible to smooth out wrinkles, folds, etc. in the exterior film 130.
  • step S42 Note that Figures 13 and 14A mentioned in the explanation of step S42 are figures for explaining step S44, which will be described later. They are mentioned here to explain the tension applying device 28.
  • FIGS. 37A and 37B show a modified example of the winding device 50 that can be used in step S42.
  • the modified example of the winding device 50 will be described with primary reference to FIG. 37A and FIG. 37B.
  • the winding device 50 may include a first film holding portion 31, a second film holding portion 32, a first pushing portion 66, and a second pushing portion 67.
  • the first film holding portion 31 and the second film holding portion 32 are members that hold the exterior film 130, and are not particularly limited in configuration.
  • the first film holding portion 31 and the second film holding portion 32 may have a configuration similar to that of the film holding portion 29 described with reference to Figures 36A to 36E.
  • the first film holding portion 31 can hold a portion of the exterior film 130 that extends from the second side end face G12 in contact with the second side end face G12, the first side end face G11, and the third side end face G13.
  • the second film holding portion 32 can hold a portion of the exterior film 130 that extends from the third side end face G13 in contact with the second side end face G12, the first side end face G11, and the third side end face G13.
  • the first film holding unit 31 and the second film holding unit 32 also serve as components of the film supply device 30. That is, the first film holding unit 31 included in the winding device 50 may have the same configuration as the first film holding unit 31 described above with reference to Figures 36A to 36E.
  • the first film holding unit 31 can hold the exterior film 130 in a taut state while suppressing the occurrence of wrinkles, sagging, and the like.
  • the first film holding unit 31 and the second film holding unit 32 may continue to hold the exterior film 130 from the previous process.
  • the first film holding portion 31 and the second film holding portion 32 included in the winding device 50 can approach each other in the second direction D2 and can move away from each other in the second direction D2. Therefore, the distance between the first film holding portion 31 and the second film holding portion 32 can be adjusted as the exterior film 130 is wound around the electrode unit 111. At least one or both of the first film holding portion 31 and the second film holding portion 32 may be movable in the second direction D2.
  • the winding device 50 may include a guide rail 281 and a holding drive unit 282 that move the first film holding unit 31.
  • the guide rail 281 and the holding drive unit 282 also serve as components of the film supply device 30.
  • the guide rail 281 and the holding drive unit 282 included in the winding device 50 may each have the same configuration as the guide rail 281 and the holding drive unit 282 included in the film supply device 30 described above with reference to Figures 36A to 36E.
  • the winding device 50 may include a first film holding section and a second film holding section that are separate from the first film holding section 31 and the second film holding section 32 included in the film supplying device 30.
  • the first film holding section of the winding device 50 that is provided separately from the first film holding section 31 of the film supplying device 30 may have the same configuration as the first film holding section 31 of the film supplying device 30, or may have a different configuration from the first film holding section 31 of the film supplying device 30.
  • the configurations of the first film holding section 31 and the second film holding section 32 are not particularly limited.
  • the first pressing portion 66 contacts the exterior film 130 located between the first film holding portion 31 and the second side end face G12.
  • the second pressing portion 67 contacts the exterior film 130 located between the second film holding portion 32 and the third side end face G13.
  • the first pressing portion 66 and the second pressing portion 67 press the exterior film 130.
  • the first pressing portion 66 and the second pressing portion 67 may press the exterior film 130 so as to approach each other in the second direction D2.
  • One first pressing portion 66 may extend in the first direction D1 and face both the first side edge portion A1 and the second side edge portion A2 of the exterior film 130 from a direction perpendicular to the first direction D1. That is, the first pressing portion 66 acting on the first side edge portion A1 and the first pressing portion 66 acting on the second side edge portion A2 may be integrally configured. In other words, the length of the first pressing portion 66 along the first direction D1 may be longer than the overall width of the exterior film 130. Alternatively, the first pressing portion 66 acting on the first side edge portion A1 of the exterior film 130 and the first pressing portion 66 acting on the second side edge portion A2 of the exterior film 130 may be provided separately.
  • One second pressing portion 67 may extend in the first direction D1 and face both the first side edge portion A1 and the second side edge portion A2 of the exterior film 130 from a direction perpendicular to the first direction D1. That is, the second pressing portion 67 acting on the first side edge portion A1 and the second pressing portion 67 acting on the second side edge portion A2 may be integrally configured. In other words, the length of the second pressing portion 67 along the first direction D1 may be longer than the overall width of the exterior film 130. Alternatively, the second pressing portion 67 acting on the first side edge portion A1 of the exterior film 130 and the second pressing portion 67 acting on the second side edge portion A2 of the exterior film 130 may be provided separately.
  • the first pressing section 66 and the second pressing section 67 may include a rotatable pressing roll 68.
  • the pressing roll 68 can move on the exterior film 130 while pressing the exterior film 130.
  • the pressing roll 68 moves while rotating on the exterior film 130.
  • the pressing roll 68 can effectively prevent damage to the exterior film 130.
  • the first pressing section 66 and the second pressing section 67 include a pressing roll 68, but the first pressing section 66 and the second pressing section 67 are not limited to this example.
  • the first pressing section 66 and the second pressing section 67 may be bar-shaped.
  • the bar-shaped first pressing section 66 and the second pressing section 67 may function as squeegees.
  • step S42 which is mainly shown in Figures 37A and 37B, the exterior film 130 is wrapped around the electrode unit 111.
  • the exterior film 130 may be wrapped around the electrode unit 111 as described below.
  • step S42 continuing from the previously performed step S2, the exterior film 130 is held by the first film holding portion 31 and the second film holding portion 32 of the winding device 50, which also serves as a component of the film supply device 30.
  • step S42 continuing from the previously performed step S3, the lid body 140 is fixed by the fixing device 40.
  • step S41 which is performed immediately before step S42, the first side edge portion A1 of the first part 131A of the exterior film 130 is joined to the first side end surface G11 of the first lid body 140A, and the second side edge portion A2 is joined to the first side end surface G11 of the second lid body 140B.
  • step S42 the lid body 140 held by the fixing device 40 moves to the second side in the third direction D3 relative to the first film holding section 31 and the second film holding section 32 of the winding device 50.
  • the movement of the lid body 140 may be performed by the holding and conveying section 36 of the electrode unit supply device 35 in addition to or instead of being driven by the fixing device 40.
  • step S42 the first pressing portion 66 and the second pressing portion 67 of the winding device 50 come into contact with the exterior film 130.
  • the first pressing portion 66 and the second pressing portion 67 come into contact with a portion of the exterior film 130 that extends from the first side end surface G11.
  • the first pushing portion 66 contacts the exterior film 130 located between the first film holding portion 31 and the first side end face G11 from the second side in the third direction D3.
  • the second pushing portion 67 contacts the exterior film 130 located between the second film holding portion 32 and the first side end face G11 from the second side in the third direction D3.
  • the first pushing portion 66 and the second pushing portion 67 support the exterior film 130, which moves together with the lid body 140 to the second side in the third direction D3, from the second side in the third direction D3.
  • the operation of the first pressing unit 66 and the second pressing unit 67 may be performed in parallel with the driving of the lid body 140 by the fixing device 40.
  • the first pressing unit 66 may press the exterior film 130 so that the exterior film 130 spreads on a plane perpendicular to the third direction D3 between the first film holding unit 31 and the first pressing unit 66.
  • the second pressing unit 67 may press the exterior film 130 so that the exterior film 130 spreads on a plane perpendicular to the third direction D3 between the second film holding unit 32 and the second pressing unit 67.
  • Such operation of the pressing units 66 and 67 allows the first film holding unit 31 to apply a tension within a certain range to the exterior film 130 while stably holding the exterior film 130. Therefore, the occurrence of wrinkles, folds, etc. in the exterior film 130 can be suppressed.
  • step S42 the exterior film 130 bends with the movement of the lid 140 and the operation of the first and second pressing portions 66 and 67.
  • the distance between the first and second film holding portions 31 and 32 in the second direction D2 narrows so that a certain range of tension is applied to the exterior film 130.
  • the first film holding portion 31 moves to the second side in the second direction D2 and approaches the second film holding portion 32.
  • Such operation of the film holding portions 31 and 32 allows tension within a certain range to be applied to the exterior film 130. Therefore, the occurrence of wrinkles, folds, etc. in the exterior film 130 can be suppressed.
  • the pushers 66, 67 move in the second direction D2 as shown in FIG. 37B.
  • the first pusher 66 and the second pusher 67 push the exterior film 130 in the second direction D2 so that the distance D68 between the first pusher 66 and the second pusher 67 along the second direction D2 is smaller than the length DG14 of the fourth side end face G14 along the second direction D2.
  • the push rolls 68 of the pushers 66, 67 overlap the fourth side end face G14 when projected onto a plane perpendicular to the third direction D3, which is the normal direction of the fourth side end face G14.
  • the distance D312 between the first film holding portion 31 and the second film holding portion 32 in the second direction D2 may be greater than the length DG14 of the fourth side end face G14 in the second direction D2.
  • the first joining device 70 can easily access the exterior film 130 located on the side end face G1. Therefore, it is possible to effectively prevent gaps from being generated between the side end faces G1 of the first and second lid bodies 140A and 140B and the exterior film 130, and effectively improve the sealing between the side end faces G1 of the first and second lid bodies 140A and 140B and the exterior film 130.
  • the distance D68 between the pressing portions 66, 67 smaller than the length DG14 of the fourth side end face G14, the second side end face G12, the first side end face G11, and the third side end face G13 of the lid body 140 can be brought into close contact with the exterior film 130. That is, the first side edge portion A1 in the second part 131B of the exterior film 130 can be brought into close contact with the second side end face G12 of the first lid body 140A. The second side edge portion A2 in the second part 131B of the exterior film 130 can be brought into close contact with the second side end face G12 of the second lid body 140B.
  • the first side edge portion A1 in the third part 131C of the exterior film 130 can be brought into close contact with the third side end face G13 of the first lid body 140A.
  • the second side edge A2 in the third portion 131C of the exterior film 130 can be in close contact with the third side end surface G13 of the second lid 140B.
  • the exterior film 130 extending from the second side end face G12 is inclined inward in the second direction D2. Therefore, the formation of a gap between the exterior film 130 and the second side end face G12 can be effectively suppressed.
  • the exterior film 130 extending from the third side end face G13 is inclined inward in the second direction D2. Therefore, the formation of a gap between the exterior film 130 and the third side end face G13 can be effectively suppressed.
  • the inside in the second direction D2 is the side closer to the center of gravity of the electrode body 115 in the second direction D2.
  • the outside in the second direction D2 is the side away from the center of gravity of the electrode body 115 in the second direction D2.
  • the operation of bringing the exterior film 130 into contact with the first lid body 140A by the pressing parts 66, 67 and the operation of bringing the exterior film 130 into contact with the second lid body 140B by the pressing parts 66, 67 may be performed simultaneously in parallel.
  • the operation of bringing the exterior film 130 into contact with the first lid body 140A by the pressing parts 66, 67 and the operation of bringing the exterior film 130 into contact with the second lid body 140B by the pressing parts 66, 67 may be performed at different times. When performed at different times, a pair of pressing parts 66, 67 may move sequentially over the first lid body 140A and the second lid body 140B.
  • the first lid body 140A and the second lid body 140B are pressed from both sides in the second direction D2 by the first pressing portion 66 and the second pressing portion 67. Therefore, the postures of the first lid body 140A and the second lid body 140B are stable, so that the first lid body 140A and the second lid body 140B can be stably attached to the exterior film 130.
  • step S42 the exterior film 130 bonded to the first side end face G11 is in contact with the second side end face G12 and the third side end face G13.
  • the first film holding section 31, the guide rail 281, and the holding drive section 282 of the winding device 50 function as a tension applying device 28 that applies tension to the exterior film 130.
  • the first film holding section 31 can effectively prevent the occurrence of deformations such as wrinkles and folds in the exterior film 130. Therefore, it is possible to effectively prevent the formation of a gap between the exterior film 130 and the lid body 140.
  • FIG. 37C is a diagram for explaining configuration S43, which is implemented following configuration S42 shown in FIG. 37A and FIG. 37B.
  • FIG. 37D is a diagram for explaining configuration S44, which is implemented following configuration S42 shown in FIG. 37A and FIG. 37B.
  • FIG. 37E is a diagram for explaining configuration S45, which is implemented following configuration S42 shown in FIG. 37A and FIG. 37B.
  • FIG. 37F is a diagram for explaining configuration S5, which is implemented following configuration S42 shown in FIG. 37A and FIG. 37B.
  • step S43 is performed in which the exterior film 130 is bonded to the second side end surface G12 and the third side end surface G13 of the lid body 140.
  • a first bonding device 70 is used.
  • step S43 as shown in Figures 11D and 37C, the exterior film 130 is bonded to the second side end face G12 and the third side end face G13.
  • the exterior film 130 is in contact with the first lid body 140A and the second lid body 140B.
  • the first side edge A1 located in the second part 131B of the exterior film 130 contacts the second side end surface G12 of the first lid body 140A.
  • the second side edge A2 located in the second part 131B of the exterior film 130 contacts the second side end surface G12 of the second lid body 140B.
  • the first side edge A1 located in the third part 131C of the exterior film 130 contacts the third side end surface G13 of the first lid body 140A.
  • the second side edge A2 located in the third part 131C of the exterior film 130 contacts the third side end surface G13 of the second lid body 140B.
  • the first bonding device 70 may include a second seal bar 71B that contacts a portion of the exterior film 130 located on the second side end surface G12 and heats the exterior film 130 while pressing it against the second side end surface G12.
  • the first bonding device 70 may include a third seal bar 71C that contacts a portion of the exterior film 130 located on the third side end surface G13 and heats the exterior film 130 while pressing it against the third side end surface G13.
  • the second seal bar 71B and the third seal bar 71C face each other in the second direction D2.
  • the exterior film 130 and the electrode unit 111 are located between the second seal bar 71B and the third seal bar 71C.
  • step S43 shown mainly in Figures 11D and 37C the exterior film 130 is bonded to the second side end surface G12 and the third side end surface G13.
  • the exterior film 130 may be bonded to the second side end surface G12 and the third side end surface G13 as described below.
  • step S43 continuing from the previously performed step S3, the lid body 140 is fixed by the fixing device 40.
  • step S43 continuing from the immediately previous step S42, the exterior film 130 bonded to the first side end face G11 is spread over the second side end face G12 and the first auxiliary surface 52b, and is spread over the third side end face G13 and the second auxiliary surface 52c.
  • step S43 shown in Figures 11D and 37C the second seal bar 71B and the third seal bar 71C are pressed toward each other.
  • An exterior film 130 is positioned between the second seal bar 71B and the electrode unit 111.
  • An exterior film 130 is positioned between the third seal bar 71C and the electrode unit 111.
  • the second seal bar 71B and the third seal bar 71C have built-in heating mechanisms.
  • the second seal bar 71B presses the exterior film 130 toward the lid body 140 while heating it.
  • the exterior film 130 is fused to the second side end surface G12 of the lid body 140.
  • the third seal bar 71C presses the exterior film 130 toward the lid body 140 while heating it.
  • the exterior film 130 is fused to the third side end surface G13 of the lid body 140.
  • the heat-sealable resin layer L3 of the exterior film 130 is fused to the second side end surface G12 and the third side end surface G13.
  • the second seal bar 71B heats the first side edge A1 and the second side edge A2 located in the second part 131B of the exterior film 130.
  • the first side edge A1 located in the second part 131B faces the second side end face G12 of the first lid body 140A.
  • the second seal S12 of the opening seal S1 is formed between the first side edge A1 located in the second part 131B and the second side end face G12 of the first lid body 140A.
  • the second side edge A2 located in the second part 131B faces the second side end face G12 of the second lid body 140B.
  • the second seal S12 of the opening seal S1 is formed between the second side edge A2 located in the second part 131B and the second side end face G12 of the second lid body 140B.
  • the third seal bar 71C heats the first side edge A1 and the second side edge A2 located in the third part 131C of the exterior film 130.
  • the first side edge A1 located in the third part 131C faces the third side end face G13 of the first lid body 140A.
  • the third seal S13 of the opening seal S1 is formed between the first side edge A1 located in the third part 131C and the third side end face G13 of the first lid body 140A.
  • the second side edge A2 located in the third part 131C faces the third side end face G13 of the second lid body 140B.
  • the third seal S13 of the opening seal S1 is formed between the second side edge A2 located in the third part 131C and the third side end face G13 of the second lid body 140B.
  • the formation of the second seal portion S12 by the second seal bar 71B and the formation of the third seal portion S13 by the third seal bar 71C may be performed simultaneously in parallel.
  • the formation of the second seal portion S12 by the second seal bar 71B and the formation of the third seal portion S13 by the third seal bar 71C may be performed at different times. If performed at different times, the second seal bar 71B and the third seal bar 71C can be formed by the same seal bar.
  • the formation of the second seal portion S12 by the second seal bar 71B and the formation of the third seal portion S13 by the third seal bar 71C are carried out simultaneously in parallel.
  • the second seal bar 71B functions as a receiving bar that receives the pushing force from the third seal bar 71C.
  • the third seal bar 71C functions as a receiving bar that receives the pushing force from the second seal bar 71B. Therefore, the configuration of the first joining device 70 can be simplified.
  • step S43 is performed using a winding device 50.
  • the winding auxiliary body 51 is in contact with the electrode unit 111 at the base surface 52a.
  • the winding auxiliary body 51 adsorbs the exterior film 130 to the first auxiliary surface 52b and the second auxiliary surface 52c.
  • the gripping portion 60 of the winding device 50 grips the exterior film 130.
  • this example is not limited to this.
  • One or more of the winding auxiliary body 51 and the gripping portion 60 may not be used in step S43.
  • step S44 is performed in which the exterior film 130 is wound around the electrode unit 111.
  • the exterior film 130 is wound around the electrode unit 111 so that the exterior film 130 contacts the fourth side end face G14.
  • step S44 the winding device 50 of the manufacturing apparatus 20 is used.
  • the winding auxiliary body 51 of the winding device 50 is separated from the exterior film 130 and the electrode unit 111.
  • the winding auxiliary body 51 By separating the winding auxiliary body 51, it becomes possible to bring the exterior film 130 into contact with the fourth side end surface G14 of the lid body 140.
  • the winding device 50 may include a winding support 54.
  • the winding support 54 contacts the exterior film 130 located on the side end surface G1.
  • the winding support 54 can restrict the movement of the electrode unit 111 when the exterior film 130 is wound around the electrode unit 111.
  • the winding device 50 may include a winding support 54 including a contact surface 55a and a support surface 55b.
  • the contact surface 55a contacts the exterior film 130 located on the second side end surface G12.
  • the support surface 55b is connected to the contact surface 55a.
  • the support surface 55b may extend parallel to the second direction D2 with the contact surface 55a in contact with the exterior film 130 located on the second side end surface G12.
  • the support surface 55b may extend parallel to the third direction D3 on the extension of the fourth side end surface G14 with the contact surface 55a in contact with the exterior film 130 located on the second side end surface G12.
  • the support surface 55b may be capable of adsorbing the exterior film 130 disposed on the support surface 55b.
  • the winding device 50 may adsorb the exterior film 130 to the support surface 55b.
  • One winding support 54 may extend in the first direction D1 and face both the first side edge A1 and the second side edge A2 of the exterior film 130 and both the first lid 140A and the second lid 140B from a direction perpendicular to the first direction D1. That is, the winding support 54 acting on the first side edge A1 and the first lid 140A and the winding support 54 acting on the second side edge A2 and the second lid 140B may be integrally configured. Alternatively, the winding support 54 acting on the first side edge A1 and the first lid 140A and the winding support 54 acting on the second side edge A2 and the second lid 140B may be provided separately.
  • the winding device 50 may include an auxiliary second winding support 56.
  • the auxiliary second winding support 56 contacts the exterior film 130 located on the side end surface G1.
  • the auxiliary second winding support 56 can restrict the movement of the electrode unit 111 when the exterior film 130 is wound around the electrode unit 111.
  • the auxiliary second winding support 56 contacts the exterior film 130 located on the third side end face G13.
  • the auxiliary second winding support 56 faces the winding support 54.
  • the winding support 54 and the auxiliary second winding support 56 face each other in the second direction D2.
  • the electrode unit 111 and the exterior film 130 are located between the winding support 54 and the auxiliary second winding support 56.
  • One auxiliary second winding support 56 may extend in the first direction D1 and face both the first side edge A1 and the second side edge A2 of the exterior film 130 and both the first lid 140A and the second lid 140B from a direction perpendicular to the first direction D1. That is, the auxiliary second winding support 56 acting on the first side edge A1 and the first lid 140A and the auxiliary second winding support 56 acting on the second side edge A2 and the second lid 140B may be integrally configured. Alternatively, the auxiliary second winding support 56 acting on the first side edge A1 and the first lid 140A and the auxiliary second winding support 56 acting on the second side edge A2 and the second lid 140B may be provided separately.
  • the winding device 50 may include a pressing body 58.
  • the pressing body 58 moves on the exterior film 130 while pressing the exterior film 130 toward the side end surface G1.
  • the pressing body 58 shown in Figures 11E and 37D is a roll.
  • the roll constituting the pressing body 58 moves while rotating on the exterior film 130.
  • the pressing body 58 allows the exterior film 130 to be stably brought into contact with the side end surface G1.
  • One pressing body 58 may extend in the first direction D1 and face both the first side edge A1 and the second side edge A2 of the exterior film 130 and both the first lid body 140A and the second lid body 140B from a direction perpendicular to the first direction D1. That is, the pressing body 58 acting on the first side edge A1 and the first lid body 140A and the pressing body 58 acting on the second side edge A2 and the second lid body 140B may be integrally configured. Alternatively, the pressing body 58 acting on the first side edge A1 and the first lid body 140A and the pressing body 58 acting on the second side edge A2 and the second lid body 140B may be provided separately.
  • the pressing body 58 is a roll, but the pressing body 58 is not limited to this example.
  • the pressing body 58 may be bar-shaped.
  • the bar-shaped pressing body 58 may function as a squeegee.
  • step S44 which is mainly shown in Figures 11E and 37D, the exterior film 130 is wrapped around the electrode unit 111.
  • the exterior film 130 may be wrapped around the electrode unit 111 as described below.
  • step S44 the lid 140 is fixed by the fixing device 40, continuing from the previously performed step S3.
  • step S44 the end of the exterior film 130 may be gripped by the gripping portion 60, continuing from the immediately previous step S43. Meanwhile, the adsorption of the exterior film 130 by the auxiliary winding body 51 is released. At the start of step 44, the auxiliary winding body 51 is retracted.
  • step S44 first, the winding support 54 and the auxiliary second winding support 56, which face each other in the second direction D2, approach each other. Between the winding support 54 and the auxiliary second winding support 56, the electrode unit 111 and the exterior film 130 joined to the electrode unit 111 are positioned. The electrode unit 111 and the exterior film 130 are held between the winding support 54 and the auxiliary second winding support 56. At this time, the winding support 54 comes into contact with the exterior film 130 at the contact surface 55a.
  • the contact surface 55a of the winding support 54 may contact both the first side edge A1 and the second side edge A2 in the second part 131B of the exterior film 130 located on the second side end surface G12 of the lids 140A and 140B. Furthermore, the contact surface 55a may contact a portion of the exterior film 130 located on the electrode body 115 located between the first lid 140A and the second lid 140B.
  • the auxiliary second winding support 56 may contact both the first side edge A1 and the second side edge A2 in the third part 131C of the exterior film 130 located on the third side end surface G13 of the lids 140A and 140B. Furthermore, the auxiliary second winding support 56 may contact a portion of the exterior film 130 located on the electrode body 115 located between the first lid 140A and the second lid 140B.
  • the energy storage element intermediate body 110 and the exterior film 130 can be stably held using the winding support 54 and the auxiliary second winding support 56.
  • the pressing body 58 moves while contacting the exterior film 130.
  • the pressing body 58 pushes the exterior film 130 towards the electrode unit 111, causing the exterior film 130 to contact the electrode unit 111.
  • the gripping portion 60 may release its hold on the exterior film 130.
  • the pressing body 58 causes the first side edge A1 in the fourth portion 131D of the exterior film 130 to contact the fourth side end surface G14 of the first lid body 140A.
  • the second side edge A2 in the fourth portion 131D of the exterior film 130 to contact the fourth side end surface G14 of the second lid body 140B.
  • the exterior film 130 wraps around the electrode unit 111 around the first direction D1.
  • the exterior film 130 wrapped around the electrode unit 111 includes a first extension portion 132A and a second extension portion 132B that extend out from the electrode unit 111.
  • the pressing body 58 may further move on the winding support 54.
  • the pressing body 58 causes the exterior film 130 to contact the support surface 55b of the winding support 54. More specifically, the pressing body 58 presses the pair of extensions 132A, 132B onto the support surface 55b.
  • the first extension 132A contacts the support surface 55b.
  • the second extension 132B contacts the first extension 132A that is in contact with the support surface 55b. If the support surface 55b is configured as an adsorption surface, the winding device 50 may adsorb the exterior film 130 to the support surface 55b as the pressing body 58 moves.
  • the action of the pressing body 58 bringing the first extension portion 132A into contact with the support surface 55b and the action of the pressing body 58 bringing the second extension portion 132B into overlap with the first extension portion 132A may be performed simultaneously in parallel.
  • one pressing body 58 may simultaneously press both the first extension portion 132A and the second extension portion 132B toward the support surface 55b.
  • the action of the pressing body 58 bringing the first extension portion 132A into contact with the support surface 55b and the action of the pressing body 58 bringing the second extension portion 132B into overlap with the first extension portion 132A may be performed at different times.
  • the support surface 55b is located on an extension of the fourth side end surface G14. Therefore, the exterior film 130 can be spread over the fourth side end surface G14 and the support surface 55b while preventing deformation of the exterior film 130, such as wrinkles or folds.
  • the gripping unit 60 grips the exterior film 130 arranged on the support surface 55b.
  • the gripping unit 60 may apply tension to the exterior film 130.
  • the gripping unit 60 is a tension applying device 28 that applies tension to the exterior film 130.
  • the tension applying device 28 may include a surface monitoring unit 64 and a winding controller 65.
  • the gripping unit 60 may include a film holding unit 29 or may consist of the film holding unit 29.
  • the tension applying device 28 By using the tension applying device 28, the exterior film 130 can be maintained in a taut state on the electrode unit 111.
  • the pair of extensions 132A, 132B can be maintained in a taut state on the support surface 55b. For example, it is possible to prevent a gap from being generated between the fourth side end surface G14 and the exterior film 130. It is also possible to prevent a gap from being generated between the support surface 55b and the exterior film 130.
  • step S44 a tensioning device 28 including an inverted crown roll 63A and a nip roll 63B may be used.
  • step S44 a tensioning device 28 including a pair of nip rolls may be used.
  • the timing at which the gripping unit 60 starts gripping the film can be set appropriately.
  • the gripping unit 60 may continue gripping the exterior film 130 from the immediately preceding step S43.
  • the gripping unit 60 may guide the exterior film 130 onto the electrode unit 111 and the support surface 55b.
  • the exterior film 130 wrapped around the electrode unit 111 is held by the winding support 54 and the auxiliary second winding support 56. Therefore, even if the exterior film 130 is pulled by a tensioning device 28 such as the gripping portion 60, the position of the electrode unit 111 can be stably maintained.
  • step S44 the fourth portion 131D of the exterior film 130 contacts the fourth side end surface G14, and the extension portions 132A and 132B of the exterior film 130 extend over the support surface 55b.
  • a winding support 54 may be used instead of the second seal bar 71B described with reference to Figures 11D and 37C.
  • the winding support 54 may incorporate a heating mechanism.
  • the contact surface 55a may heat the exterior film 130, so that the winding support 54 functions as the first joining device 70.
  • the second seal bar 71B can be omitted.
  • the winding support 54 may press the exterior film 130 towards the lid 140 while heating it.
  • the exterior film 130 may be fused to the second side end surface G12 of the lid 140.
  • the winding support 54 may press the exterior film 130 towards the lid 140 while heating it.
  • the exterior film 130 may be fused to the second side end surface G12 of the lid 140.
  • the heat-sealable resin layer L3 of the exterior film 130 is fused to the second side end surface G12.
  • the winding support 54 may heat the first side edge A1 and the second side edge A2 located in the second part 131B of the exterior film 130.
  • the first side edge A1 located in the second part 131B faces the second side end face G12 of the first lid body 140A.
  • the second seal S12 of the opening seal S1 is formed between the first side edge A1 located in the second part 131B and the second side end face G12 of the first lid body 140A.
  • the second side edge A2 located in the second part 131B faces the second side end face G12 of the second lid body 140B.
  • the second seal S12 of the opening seal S1 is formed between the second side edge A2 located in the second part 131B and the second side end face G12 of the second lid body 140B.
  • an auxiliary second winding support 56 may be used in place of the third seal bar 71C described with reference to Figures 11D and 37C.
  • the auxiliary second winding support 56 may incorporate a heating mechanism.
  • the auxiliary second winding support 56 may heat the exterior film 130, causing the winding support 54 to function as the first joining device 70.
  • the third seal bar 71C can be omitted.
  • the auxiliary second winding support 56 may press the exterior film 130 towards the lid 140 while heating it.
  • the exterior film 130 may be fused to the third side end surface G13 of the lid 140.
  • the auxiliary second winding support 56 may press the exterior film 130 towards the lid 140 while heating it.
  • the exterior film 130 may be fused to the third side end surface G13 of the lid 140.
  • the heat-sealable resin layer L3 of the exterior film 130 is fused to the third side end surface G13.
  • the auxiliary second winding support 56 may heat the first side edge A1 and the second side edge A2 located in the third part 131C of the exterior film 130.
  • the first side edge A1 located in the third part 131C faces the third side end face G13 of the first lid body 140A.
  • the third seal part S13 of the opening seal part S1 is formed between the first side edge A1 located in the third part 131C and the third side end face G13 of the first lid body 140A.
  • the third side edge A3 located in the third part 131C faces the third side end face G13 of the second lid body 140B.
  • the third seal part S13 of the opening seal part S1 is formed between the second side edge A2 located in the third part 131C and the third side end face G13 of the second lid body 140B.
  • step S45 is performed to bond the exterior film 130 to the fourth side end surface G14 of the lid body 140.
  • a first bonding device 70 is used.
  • step S45 as shown in Figures 11F and 37E, the exterior film 130 is bonded to the fourth side end surface G14.
  • the exterior film 130 is in contact with the fourth side end surface G14 of the first lid body 140A and the second lid body 140B. More specifically, the first side edge portion A1 located within the fourth portion 131D of the exterior film 130 is in contact with the fourth side end surface G14 of the first lid body 140A. The second side edge portion A2 located within the fourth portion 131D of the exterior film 130 is in contact with the fourth side end surface G14 of the second lid body 140B.
  • the first joining device 70 may include a fourth seal bar 71D that contacts a portion of the exterior film 130 located on the fourth side end surface G14 and heats the exterior film 130 while pressing it against the fourth side end surface G14.
  • step S45 which is mainly shown in Figures 11F and 37E, the exterior film 130 is joined to the fourth side end surface G14.
  • the exterior film 130 may be joined to the fourth side end surface G14 as described below.
  • step S45 continuing from step S3, the lid body 140 is fixed by the fixing device 40.
  • step S45 continuing from step S44, which was performed immediately before, the exterior film 130 bonded to the first side end face G11, the second side end face G12, and the third side end face G13 is spread over the fourth side end face G14 and the support surface 55b.
  • the first extension portion 132A located on the support surface 55b of the exterior film 130 may be adsorbed to the support surface 55b.
  • the exterior film 130 may be maintained in a taut state by applying tension to it by the gripping portion 60 (tensioning device 28).
  • step S45 shown in Figures 11F and 37E the fourth seal bar 71D and the receiving bar 72A are pressed toward each other.
  • the exterior film 130 is located between the fourth seal bar 71D and the electrode unit 111.
  • the fourth seal bar 71D has a built-in heating mechanism.
  • the fourth seal bar 71D presses the exterior film 130 toward the lid body 140 while heating it.
  • the exterior film 130 is fused to the fourth side end surface G14 of the lid body 140.
  • the heat-sealable resin layer L3 of the exterior film 130 is fused to the second side end surface G12 and the third side end surface G13.
  • the fourth seal bar 71D heats the first side edge A1 and the second side edge A2 located in the fourth part 131D of the exterior film 130.
  • the first side edge A1 located in the fourth part 131D faces the fourth side end face G14 of the first lid body 140A.
  • the fourth seal S14 of the opening seal S1 is formed between the first side edge A1 located in the fourth part 131D and the fourth side end face G14 of the first lid body 140A.
  • the second side edge A2 located in the fourth part 131D faces the fourth side end face G14 of the second lid body 140B.
  • the fourth seal S14 of the opening seal S1 is formed between the second side edge A2 located in the fourth part 131D and the fourth side end face G14 of the second lid body 140B.
  • step S45 an opening seal portion S1 is formed that seals between the side end surface G1 of the lid body 140 and the exterior film 130.
  • the opening seal portion S1 includes a first seal portion S11, a second seal portion S12, a third seal portion S13, and a fourth seal portion S14.
  • the opening seal portion S1 goes around the lid body 140.
  • the opening seal portion S1 is circumferential.
  • the side end surface G1 of each of the first lid body 140A and the second lid body 140B includes a plurality of side end surfaces.
  • a corner portion G1X is formed between two adjacent side end surfaces G1.
  • the first bonding device 70 and the second bonding device 90 described below may include a spot heater 74 that heats a portion of the exterior film 130 located on the corner portion G1X.
  • a poor bond between the first and second lids 140A and 140B and the exterior film 130 is likely to occur at the corners G1X of the side end faces G1.
  • the portion located at the corners G1X of the exterior film 130 is locally heated, so that the first and second lids 140A and 140B can be stably bonded to the exterior film 130 at the corners G1X.
  • the sealing between the side end faces G1 of the first and second lids 140A and 140B and the exterior film 130 can be improved.
  • excessive heating of the exterior film 130 as a whole can be prevented, so damage to the exterior film 130 can be prevented.
  • the spot heater 74 may include a blower 75 that emits heated gas. As shown in FIG. 16, the spot heater 74 may include an infrared heater 76 that emits infrared rays. As shown in FIG. 17, the spot heater 74 may include a corner heater 77 that includes a heating surface 77a that is bent to correspond to the corner G1X. The heating surface 77a of the corner heater 77 is bent so that the exterior film 130 can be pressed simultaneously against both of the two side end faces that make up the corner.
  • the spot heater 74 may include a roller-type heater 78.
  • the roller-type heater 78 includes a rotatable roller 781.
  • the roller 781 includes a heated outer peripheral surface 781a.
  • the roller-type heater 78 may include a heating mechanism for heating the outer peripheral surface 781a.
  • the first bonding device 70 and the second bonding device 90 described below may include a robot arm 80 holding a spot heater 74.
  • the spot heater 74 can approach the portion located on the corner G1X of the exterior film 130 from an appropriate direction. This allows the exterior film 130 and the side end surface G1 to be more stably bonded to each other on the corner G1X of the side end surface G1.
  • the roller heater 78 shown in Figs. 18A and 18B can stably heat any desired area, not just the corner G1X of the side end surface G1.
  • the roller 781 moves over the exterior film 130 arranged on the side end surface G1 of the lid body 140 while rotating. As the roller 781 moves, it heats the exterior film 130 and pushes the exterior film 130 toward the side end surface G1 of the lid body 140.
  • the roller heater 78 can also bond the exterior film 130 to the side end surface G1 of the lid body 140, just like the seal bar.
  • One or both of the first bonding device 70 and the second bonding device 90 described later may include a roller-type heater 78 including a rotatable roller 781 including a heated outer peripheral surface 781a, and a robot arm 80 holding the roller-type heater 78.
  • the heating temperature and the force with which the roller 781 presses the exterior film 130 can be appropriately adjusted at each position on the exterior film 130 through which the roller 781 passes.
  • the heating temperature and the force with which the roller 781 presses the exterior film 130 can be made uniform. This allows the exterior film 130 and the side end surface G1 to be bonded more stably.
  • the sealing between the side end surfaces G1 of the first lid body 140A and the second lid body 140B and the exterior film 130 can be improved.
  • the roller-type heater 78 may include a roller 781, a tip portion 782, a base portion 783, and a pressure portion 784.
  • the roller 781 includes a heated outer peripheral surface 781a.
  • the tip portion 782 rotatably holds the roller 781.
  • the base portion 783 holds the tip portion 782.
  • the tip portion 782 is movable relative to the base portion 783 in an expansion/contraction direction D78 perpendicular to the rotation axis A781 of the roller 781.
  • the expansion/contraction direction D78 is perpendicular to the rotation axis A781 of the roller 781.
  • the pressure applying portion 784 is located between the tip end 782 and the base end 783.
  • the pressure applying portion 784 is supported by the base end 783 and pushes the tip end 782 in a direction in which the tip end 782 moves away from the base end 783.
  • the pressure applying portion 784 pushes the tip end 782 in the expansion/contraction direction D78.
  • the pressure applying portion 784 pushes the tip end 782 and the base end 783 so that the tip end 782 and the base end 783 move away from each other in the expansion/contraction direction D78.
  • the force from the pressure unit 784 causes the overall length of the roller-type heater 78 to expand.
  • the tip end 782 can approach the base end 783 along the expansion/contraction direction D78 by applying a force that resists the pushing force of the pressure unit 784.
  • the overall length of the roller-type heater 78 shortens when the roller-type heater 78 receives an external force that pushes the roller 781 and tip end 782 toward the base end 783.
  • the actual dimensions of the lid 140 may deviate from the planned dimensions, in other words, the designed dimensions.
  • the position of the side end surface G1 at the planned dimensions is shown by a two-dot chain line.
  • the dimensions of the lid 140 shown in FIG. 38B are larger than the design dimensions shown in FIG. 38A.
  • the force applied from the lid 140 to the roller heater 78, which pushes the roller 781 and the tip 782 toward the base end 783 becomes larger, and the overall length of the roller heater 78 becomes shorter.
  • the dimensions of the lid 140 shown in FIG. 38C are smaller than the design dimensions shown in FIG. 38A.
  • the force from the pressure unit 784 causes the roller heater 78 to expand in length, and the roller 781 comes into contact with the lid 140.
  • the roller 781 can heat the exterior film 130 while continuing to press the exterior film 130 toward the side end faces 140B of the first lid body 140A and the second lid body with a sufficient force.
  • This allows the exterior film 130 to be more stably bonded to the side end face G1.
  • This prevents gaps from occurring between the side end faces G1 of the first lid body 140A and the second lid body 140B and the exterior film 130, improving the airtightness between the side end faces G1 of the first lid body 140A and the second lid body 140B and the exterior film 130.
  • the pressure applying portion 784 is a member that is supported by the base end portion 783 and presses the tip end portion 782 along the extension/contraction direction D78.
  • the specific configuration of the pressure applying portion 784 is not particularly limited.
  • the pressure applying portion 784 may be a member that elastically deforms. Examples of the pressure applying portion 784 include a fluid pressure cylinder such as an air cylinder, a damper mechanism, a spring such as a compression spring, and rubber.
  • An upper and lower limit may be set for the deformation resistance (N/mm) of the pressure section 784.
  • the deformation resistance is the magnitude of the force (N) required to shorten the pressure section by 1 mm in the expansion/contraction direction D78.
  • the deformation resistance is the resistance to elastic deformation, and is also called elastic deformation resistance.
  • the deformation resistance of a spring is the spring constant. If the deformation resistance is large, the expansion length of the roller-type heater 78 when a constant force is applied will be small. If the deformation resistance is small, the expansion length of the roller-type heater 78 when a constant force is applied will be large.
  • the force with which the roller heater 78 presses the exterior film 130 toward the side end surface G1 changes with the change in length of the pressure section 784, which follows the dimensional changes of the lid body 140, etc.
  • N/mm deformation resistance
  • the deformation resistance (N/mm) of the pressure applying portion 784 may be 1.0 N/mm or less, 0.90 N/mm or less, or 0.80 N/mm or less.
  • the deformation resistance (N/mm) is measured using a force gauge and a displacement sensor. With the movement of the tip 782 in the expansion/contraction direction D78 restricted, the base end 783 is pressed in the expansion/contraction direction D78 towards the tip 782. At this time, the load (N) applied to the base end 783 is measured using a force gauge, and the displacement (mm) of the base end 783 in the expansion/contraction direction D78 is measured using a displacement sensor.
  • the roller 781 of the roller heater 78 is pressed against the exterior film 130 so that the roller heater 78 can press the exterior film 130 against the side end surface G1 with a preset force. Therefore, the pressure unit 784 is used in a shortened state to a length according to the preset force.
  • the amount of relative movement of the tip end 782 and base end 783 required to apply a predetermined force i.e., the amount of change in the overall length of the pressure unit 784, can be reduced. Therefore, the roller heater 78 can be made smaller and lighter.
  • the deformation resistance (N/mm) of the pressure applying portion 784 may be 0.10 N/mm or more, 0.20 N/mm or more, or 0.30 N/mm or more.
  • the deformation resistance (N/mm) of the pressure applying portion 784 may be 0.10 N/mm or more and 1.0 N/mm or less, 0.20 N/mm or more and 1.0 N/mm or less, or 0.30 N/mm or more and 1.0 N/mm or less.
  • the deformation resistance (N/mm) of the pressure applying portion 784 may be 0.10 N/mm or more and 0.90 N/mm or less, 0.20 N/mm or more and 0.90 N/mm or less, or 0.30 N/mm or more and 0.90 N/mm or less.
  • the deformation resistance (N/mm) of the pressure applying portion 784 may be 0.10 N/mm or more and 0.80 N/mm or less, 0.20 N/mm or more and 0.80 N/mm or less, or 0.30 N/mm or more and 0.80 N/mm or less.
  • the step S4 of wrapping and joining the exterior film 130 around the electrode unit 111 separately included a step S41 of joining the exterior film 130 to the first side end face G11 and a step S43 of joining the exterior film 130 to the second and third side end faces G12, G13.
  • This example is not limited to this example, and as shown in FIG. 7C, the joining of the exterior film 130 to the first to third side end faces G11 to G13 may be performed continuously in one step.
  • the exterior film 130 in the state shown in FIG. 18B may be joined in order to the third side end face G13, the first side end face G11, and the second side end face G12.
  • first side end surface G11, the second side end surface G12, and the third side end surface G13 may be joined in order to the second side end face G12, the first side end face G11, and the third side end face G13.
  • the second side end surface G12, the first side end surface G11, and the third side end surface G13 do not have to be joined consecutively by one roller-type heater 78.
  • the first side end surface G11, the second side end surface G12, and the third side end surface G13 may be joined in that order, or the first side end surface G11, the third side end surface G13, and the second side end surface G12 may be joined in that order.
  • the exterior film 130 may be wrapped around the supplied electrode unit 111.
  • the holding and conveying section 36 of the electrode unit supplying device 35 may supply the electrode unit 111 by pushing it into the exterior film 130 from the first side in the third direction D3 (e.g., the upper side in the vertical direction).
  • the holding and conveying section 36 may supply the electrode unit 111 by pushing it into the exterior film 130 from the second side in the third direction D3 (e.g., the lower side in the vertical direction).
  • the first and second pushing sections 66, 67 and the first and second film holding sections 31, 32 may perform the operations described with reference to FIG. 37A and FIG. 37B to bring the exterior film 130 into contact with the first to third side end faces G11 to G13 of the lid body 140.
  • the seal bars 71B to 71D and the roller-type heater 78 of the first joining device 70 can be used to join the exterior film 130 to the first to third side end faces G11 to G13 of the lid body 140.
  • step S4 is completed by step S45.
  • step S4 is followed by step S5, in which the extension portions 132A and 132B are joined together.
  • step S5 the pair of extension portions 132A and 132B are joined to each other.
  • step S5 the second joining device of the manufacturing apparatus 20 is used.
  • the manufacturing apparatus 20 may further include a second joining device 90.
  • the second joining device 90 joins a pair of extension portions 132A, 132B of the exterior film 130 wrapped around the electrode unit 111, which extend from the electrode unit 111 and face each other.
  • the second joining device 90 may include a film seal bar 91.
  • the film seal bar 91 presses the pair of extension portions 132A, 132B toward a receiving body 92 that supports the pair of extension portions 132A, 132B while applying heat thereto.
  • the winding support 54 may constitute the receiving body 92 that supports the pair of extension portions 132A, 132B.
  • step S5 which is mainly shown in Figures 11G and 37F, a pair of extension portions 132A, 132B are joined to each other.
  • a pair of extension portions 132A, 132B may be joined to each other as described below.
  • step S5 continuing from step S3, the lid body 140 is fixed by the fixing device 40.
  • step S5 continuing from step S4, the pair of extensions 132A, 132B of the exterior film 130 joined to the side end surface G1 of the lid body 140 are spread out on the support surface 55b of the winding support 54.
  • step S5 continuing from step S4, the pair of extensions 132A, 132B may be adsorbed to the support surface 55b.
  • step S5 continuing from step S4, the exterior film 130 may be maintained in a taut state by being given tension by the gripping unit 60 (tensioning device 28).
  • step S5 shown in Figures 11G and 37F the film seal bar 91 presses a pair of extensions 132A, 132B toward the winding support 54 as the receiver 92.
  • the pair of extensions 132A, 132B are pressed toward each other between the film seal bar 91 and the receiver 92.
  • the film seal bar 91 has a built-in heating mechanism.
  • the film seal bar 91 presses the extensions 132A, 132B toward the receiver 92 while heating them.
  • the pair of extensions 132A, 132B are fused to each other.
  • the heat-sealable resin layer L3 of one exterior film 130 is fused to the other exterior film 130.
  • the bar drive unit 73 described with reference to Figures 12A and 12B can be applied to the film seal bar 91 as well as the seal bar included in the first joining device 70.
  • the bar drive unit 73 moves the film seal bar 91 so that it is pressed in by a preset amount.
  • the second joining device 90 may also include the roller-type heater 78 described above in addition to or instead of the film seal bar 91.
  • the roller-type heater 78 shown in FIG. 18A and FIG. 18B can stably heat a desired area, not limited to the corner G1X of the side end surface G1.
  • the second joining device 90 may include a roller-type heater 78 including a rotatable roller 781 including a heated outer peripheral surface 781a, and a robot arm 80 that holds the roller-type heater 78.
  • the heating temperature and the force with which the roller 781 presses the exterior film 130 can be appropriately adjusted at each position on the exterior film 130 through which the roller 781 passes.
  • the heating temperature and the force with which the roller 781 presses the exterior film 130 can be made uniform. This allows the pair of extensions 132A, 132B to be joined more stably.
  • the roller-type heater 78 described with reference to Figures 38A to 38C can be applied to the second bonding device 90.
  • the force from the pressure unit 784 causes the overall length of the roller-type heater 78 to expand, and the roller 781 comes into contact with the lid body 140.
  • the roller 781 can heat the exterior film 130 while continuing to press the exterior film 130 toward the side end surfaces 140B of the first lid body 140A and the second lid body with a sufficient force. Therefore, the exterior film 130 and the side end surface G1 can be bonded more stably.
  • the amount of change in the force with which the roller heater 78 presses the exterior film 130 toward the side end surface G1 can be reduced.
  • the variation in the force with which the roller heater 78 presses the exterior film 130 toward the side end surface G1 can be reduced, improving the airtightness between the side end surfaces of the first and second lids and the exterior film.
  • the amount of relative movement between the tip end 782 and the base end 783 required to apply a specified force i.e., the amount of change in the overall length of the pressure applying portion 784, can be reduced. This allows the roller-type heater 78 to be made smaller and lighter.
  • the heated seal bar can deform. Therefore, as shown in FIG. 15B, the receiver 92 included in the second bonding device 90 may include an elastic body 93 that can deform in response to the deformation of the film seal bar 91.
  • the elastic body 93 may be rubber.
  • the elastic body 93 may be resin. According to this example, the receiver 92 can deform in response to the deformation of the film seal bar 91. Therefore, the pair of extension portions 132A, 132B can be stably bonded between the film seal bar 91 and the receiver 92.
  • the winding support 54 may incorporate a heating mechanism. By heating the support surface 55b, the winding support 54 may function as the second joining device 90.
  • the winding support 54 may press the pair of extensions 132A, 132B of the exterior film 130 toward each other while heating them.
  • the pair of extensions 132A, 132B of the exterior film 130 may be fused to each other.
  • the heat-sealable resin layer L3 of one exterior film 130 is fused to the other exterior film 130.
  • a receiving body 92 may be placed at the position of the film seal bar 91 in FIG. 11G.
  • the pair of extensions 132A, 132B can be pressed toward each other while heating them between the receiving body 92 and the winding support 54.
  • the above manufacturing method produces an energy storage element intermediate 110.
  • the energy storage element intermediate 110 is used to produce an energy storage element 100.
  • a manufacturing apparatus 10 for the energy storage element 100 may include a manufacturing apparatus 20 for the energy storage element intermediate 110 and an injection apparatus 15 for injecting an electrolyte into the energy storage element intermediate 110.
  • a manufacturing method for producing the energy storage element 100 may include a step of manufacturing the energy storage element intermediate 110 by the above manufacturing method, and a step of injecting an electrolyte into the energy storage element intermediate 110.
  • the manufacturing apparatus 20 and manufacturing method for the energy storage element intermediate 110 manufacture the energy storage element intermediate 110 using the electrode body unit 111 and the exterior film 130.
  • the electrode body unit 111 includes a first lid body 140A and a second lid body 140B, an electrode body 115, and a first terminal 117A and a second terminal 117B.
  • the electrode body 115 is located between the first lid body 140A and the second lid body 140B.
  • the first terminal 117A is electrically connected to the electrode body 115.
  • the first terminal 117A is connected to the first lid body 140A.
  • the second terminal 117B is electrically connected to the electrode body 115.
  • the second terminal 117B is connected to the second lid body 140B.
  • the manufactured energy storage element 100 includes an exterior body 120 and an electrode body 115 housed in the exterior body 120.
  • the exterior body 120 includes a first cover body 140A, a second cover body 140B, and an exterior film 130.
  • the manufacturing apparatus 20 includes a fixing device 40 that fixes the first lid body 140A and the second lid body 140B of the electrode unit 111, and a first joining device 70 that joins the exterior film 130 wrapped around the electrode unit 111 to the side end surface G1 so as to be in circumferential contact with each of the side end surfaces G1 of the first lid body 140A and the second lid body 140B.
  • the manufacturing apparatus 20 may further include a winding device 50 that winds the exterior film 130 around the electrode unit 111 so as to be in circumferential contact with each of the side end surfaces G1 of the first lid body 140A and the second lid body 140B.
  • the manufacturing method includes a step of fixing the first lid 140A and the second lid 140B of the electrode unit 111, and a step of joining the exterior film 130 wrapped around the electrode unit 111 to the side end surface G1 so as to be in circumferential contact with each of the side end surfaces G1 of the first lid 140A and the second lid 140B.
  • the manufacturing method may also include a step of wrapping the exterior film 130 around the electrode unit 111 so as to be in circumferential contact with each of the side end surfaces G1 of the first lid 140A and the second lid 140B.
  • the fixing device 40 can be used to maintain the appropriate relative positions between the first and second lids 140A and 140B and the exterior film 130. Therefore, the first joining device 70 can be used to stably join the first and second lids 140A and 140B and the exterior film 130 in the appropriate relative positions.
  • the manufacturing apparatus 20 further includes a film supplying device 30 that supplies an exterior film 130, and an electrode unit supplying device 35 that places the electrode unit 111 on the exterior film 130.
  • a film supplying device 30 that supplies an exterior film 130
  • an electrode unit supplying device 35 that places the electrode unit 111 on the exterior film 130.
  • the manufacturing apparatus 20 further includes a positioning device 38 that positions the electrode unit 111 on the exterior film 130.
  • the positioning device 38 By using the positioning device 38, the first and second lids 140A and 140B can be positioned in appropriate relative positions relative to the exterior film 130. This allows the first and second lids 140A and 140B to be stably joined to the exterior film 130 in appropriate relative positions. This prevents gaps from being generated between the side end surfaces G1 of the first and second lids 140A and 140B and the exterior film 130, improving the sealing between the side end surfaces G1 of the first and second lids 140A and 140B and the exterior film 130.
  • the first lid body 140A, the electrode body 115, and the second lid body 140B are positioned in this order in the first direction D1.
  • the fixing device 40 includes a fixed restricting portion 41 that contacts each of the first lid body 140A and the second lid body 140B from the outside in the first direction D1 to restrict outward movement, and a fixed driving portion 42 that presses each of the first lid body 140A and the second lid body 140B against the fixed restricting portion 41.
  • the first lid body 140A and the second lid body 140B can be stably fixed by a simple configuration and simple control using the fixed restricting portion 41 and the fixed driving portion 42.
  • one of the tapered convex portion 44A and the tapered concave portion 44B is provided on the fixed regulating portion 41 or the fixed driving portion 42.
  • the other of the tapered convex portion 44A and the tapered concave portion 44B is provided on the first lid body 140A and the second lid body 140B.
  • the fixed drive unit 42 includes an adsorption unit 43 that adsorbs to the first cover 140A and the second cover 140B.
  • the fixed drive unit 42 can be arranged on the outside of the first cover 140A and the second cover 140B in the first direction D1. The space required for arranging the fixed restriction unit 41 and the fixed drive unit 42 can be reduced. In other words, the fixing device 40 that functions effectively can be made smaller.
  • the first lid 140A and the second lid 140B each include an axial protrusion 142 that protrudes outward in the first direction D1.
  • the axial protrusion 142 includes a notch 143 that opens in a direction non-parallel to the first direction D1.
  • the fixed drive unit 42 includes a claw portion 45 that can be inserted into the notch 143.
  • the fixed drive unit 42 can be disposed on the outside of the first lid 140A and the second lid 140B in the first direction D1. The space required for disposing the fixed restriction unit 41 and the fixed drive unit 42 can be reduced. In other words, the fixing device 40 that functions effectively can be made smaller.
  • the axial convex portion 142 includes a groove portion 144 at the base end.
  • the axial convex portion 142 can be removed by bending it at the groove portion 144.
  • the fixed drive unit 42 can be arranged on the outside of the first cover body 140A and the second cover body 140B in the first direction D1.
  • the fixing device 40 can be made smaller.
  • the space required for arranging the fixing restriction unit 41 and the fixed drive unit 42 can be reduced. In other words, the fixing device 40 that functions effectively can be made smaller.
  • the fixing device 40 includes a clamper 46 that includes a plurality of clamp pieces 46a.
  • the plurality of clamp pieces 46a can be moved toward each other and away from each other.
  • the first lid body 140A and the second lid body 140B can be fixed more stably by using the clamper 46.
  • the winding device 50 includes a tension applying device 28 that applies tension to the exterior film 130.
  • the tension applying device 28 includes an inverted crown roll 63A and a nip roll 63B that sandwiches the exterior film 130 between the inverted crown roll 63A.
  • the tension of the exterior film 130 is greater on the outside in the first direction (width direction) D1.
  • the tension of the exterior film 130 is smaller on the inside in the first direction (width direction) D1. This allows the exterior film 130 to be wound around the electrode unit 111 while suppressing the occurrence of deformations such as wrinkles and folds in the exterior film 130.
  • the winding device 50 includes a gripping section 60 (film holding section 29, first film holding section 31) that grips the exterior film 130, a surface monitoring section 64 that monitors the surface condition of the exterior film 130 gripped by the gripping section 60, and a winding controller 65 that controls the operation of the gripping section 60.
  • the winding controller 65 controls the operation of the gripping section 60 based on the monitoring result of the surface monitoring section 64.
  • the exterior film 130 can be wound around the electrode unit 111 while suppressing the occurrence of deformation such as wrinkles and folds in the exterior film 130.
  • the occurrence of gaps between the side end surfaces G1 of the first cover body 140A and the second cover body 140B and the exterior film 130 can be suppressed, and the sealing between the side end surfaces G1 of the first cover body 140A and the second cover body 140B and the exterior film 130 can be improved.
  • the winding device 50 includes a pressing body 58 that moves on the exterior film 130 while pressing the exterior film 130 toward the side end surface G1.
  • the exterior film 130 can be wound around the electrode unit 111 while suppressing the occurrence of deformation such as wrinkles and folds in the exterior film 130.
  • the occurrence of gaps between the side end surfaces G1 of the first cover body 140A and the second cover body 140B and the exterior film can be suppressed, and the sealing between the side end surfaces G1 of the first cover body 140A and the second cover body 140B and the exterior film 130 can be improved.
  • the side end surface G1 of each of the first lid body 140A and the second lid body 140B includes a plurality of side end surfaces.
  • a corner portion G1X is formed between two adjacent side end surfaces G1.
  • the first bonding device 70 includes a spot heater 74 that heats a portion located on the corner portion G1X of the exterior film 130. Poor bonding between the first lid body 140A and the second lid body 140B and the exterior film 130 may occur on the corner portion G1X of the side end surface G1.
  • the portion located on the corner portion G1X of the exterior film 130 can be locally heated by the spot heater 74.
  • the first lid body 140A and the second lid body 140B can be stably bonded to the exterior film 130 on the corner portion G1X.
  • the exterior film 130 By preventing gaps from occurring between the side end surfaces G1 of the first and second lid bodies 140A and 140B and the exterior film 130, it is possible to improve the sealing between the side end surfaces G1 of the first and second lid bodies 140A and 140B and the exterior film 130.
  • the exterior film 130 by preventing the exterior film 130 from being excessively heated overall, it is possible to prevent damage to the exterior film 130.
  • the spot heater 74 includes one or more of a blower 75 that emits heated gas, an infrared heater 76 that emits infrared rays, a rotatable roller 781 that includes a heated outer circumferential surface 781a, and a corner heater 77 that includes a heating surface 77a that is bent to correspond to the corner G1X.
  • a spot heater 74 the exterior film 130 located on the corner G1X of the side end surface G1 can be heated more reliably than with a seal bar.
  • the first bonding device 70 includes a robot arm 80 that holds a spot heater 74.
  • the spot heater 74 can approach the portion located on the corner G1X of the exterior film 130 from an appropriate direction. This allows the exterior film 130 and the side end surface G1 to be bonded more stably at the angle of the side end surface G1.
  • a second joining device 90 is further included that joins a pair of extension portions 132A, 132B that extend from the electrode unit 111 of the exterior film 130 wrapped around the electrode unit 111 and face each other.
  • One or both of the first joining device 70 and the second joining device 90 include a heater 78 including a rotatable roller 781 including a heated outer circumferential surface 781a, and a robot arm 80 that holds the heater 78. According to this specific example, by using the robot arm 80, the heating temperature and the force with which the roller 781 presses the exterior film 130 can be appropriately adjusted at each position on the exterior film 130 where the roller 781 passes.
  • the heating temperature and the force with which the roller 781 presses the exterior film 130 can be made uniform. This allows the exterior film 130 and the side end surface G1 to be joined more stably. By preventing gaps from occurring between the side end surfaces G1 of the first lid body 140A and the second lid body 140B and the exterior film 130, the sealing performance between the side end surfaces G1 of the first lid body 140A and the second lid body 140B and the exterior film 130 can be improved.
  • the manufacturing apparatus 20 further includes a second joining device 90 that joins a pair of extending portions 132A, 132B of the exterior film 130 wrapped around the electrode unit 111, which extend from the electrode unit 111 and face each other.
  • One or both of the first joining device 70 and the second joining device 90 includes a seal bar that heats the exterior film 130 and a bar drive unit 73 that moves the seal bar toward the exterior film 130.
  • the bar drive unit 73 moves the seal bar to a preset pressing amount. According to this specific example, it is possible to suppress leakage of thermoplastic resin from between the exterior film 130 and the first and second lids 140A and 140B due to excessive pressing of the seal bar. It is possible to improve the sealing property between the exterior film 130 and the first and second lids 140A and 140B.
  • the manufacturing apparatus 20 further includes a second joining device 90 that joins a pair of extension portions 132A, 132B that extend from the electrode unit 111 of the exterior film 130 wrapped around the electrode unit 111 and face each other.
  • the second joining device 90 can stably join the pair of extension portions 132A, 132B of the exterior film 130.
  • the second bonding device 90 includes a receiver 92 that supports a pair of extensions 132A, 132B, and a film seal bar 91 that presses the pair of extensions 132A, 132B toward the receiver 92 while heating it.
  • the receiver 92 includes an elastic body 93 that is deformable in response to the deformation of the film seal bar 91.
  • the receiver 92 can deform in response to the deformation of the film seal bar 91. Therefore, for example, even if the film seal bar 91 is deformed, the pair of extensions 132A, 132B can be stably bonded between the film seal bar 91 and the receiver 92.
  • the first lid body 140A, the electrode body 115, and the second lid body 140B are positioned in this order in the first direction D1.
  • the side end surface G1 of each of the first lid body 140A and the second lid body 140B includes a first side end surface G11 and a fourth side end surface G14 extending in a second direction D2 non-parallel to the first direction D1, and a second side end surface G12 and a third side end surface G13 extending in a third direction D3 non-parallel to both the first direction D1 and the second direction D2.
  • the first joining device 70 includes a first seal bar 71A that contacts a portion of the exterior film 130 located on the first side end surface G11 and heats the exterior film 130 while pressing it between the first side end surface G11.
  • the exterior film 130 can be stably and quickly joined to the first side end surface G11 by heat sealing using the first seal bar 71A.
  • the winding device 50 includes a winding auxiliary body 51 that adsorbs the side end surface G1 and restricts the movement of the electrode unit 111 when winding the exterior film 130 around the electrode unit 111.
  • the use of the winding auxiliary body 51 allows the exterior film 130 to be wound around the electrode unit 111 stably and quickly.
  • the exterior film 130 and the side end surface G1 can be joined more quickly and stably.
  • the occurrence of gaps between the side end surfaces G1 of the first and second lid bodies 140A and 140B and the exterior film 130 can be suppressed, improving the sealing between the side end surfaces G1 of the first and second lid bodies 140A and 140B and the exterior film 130.
  • the first lid body 140A, the electrode body 115, and the second lid body 140B are positioned in this order in the first direction D1.
  • the side end faces G1 of each of the first lid body 140A and the second lid body 140B include a first side end face G11 and a fourth side end face G14 extending in a second direction D2 non-parallel to the first direction D1, and a second side end face G12 and a third side end face G13 extending in a third direction D3 non-parallel to both the first direction D1 and the second direction D2.
  • the winding device 50 includes an auxiliary winding body 51.
  • the winding auxiliary body 51 includes a base surface 52a in contact with the fourth side end surface G14, a first auxiliary surface 52b connected to the base surface 52a and located on an extension of the second side end surface G12, and a second auxiliary surface 52c connected to the base surface 52a and located on an extension of the third side end surface G13.
  • the winding auxiliary body 51 contacts the electrode body unit 111, thereby restricting the movement of the electrode body unit 111.
  • the exterior film 130 bonded to the first side end surface G11 can be stably folded onto the second side end surface G12 and the first auxiliary surface 52b, and the folded state can be stably maintained.
  • the exterior film 130 bonded to the first side end surface G11 can be stably folded onto the third side end surface G13 and the second auxiliary surface 52c, and the folded state can be stably maintained.
  • the exterior film 130 can be folded in parallel on both sides of the first side end face G11. This allows the exterior film 130 to be wound around the electrode unit 111 stably and quickly. As a result, the exterior film 130 and the side end face G1 can be joined more quickly and stably.
  • the sealing performance between the side end faces G1 of the first lid body 140A and the second lid body 140B and the exterior film 130 can be improved.
  • the winding auxiliary body 51 adsorbs the fourth side end face G14 to the base surface 52a.
  • the relative positions of the winding auxiliary body 51 and the electrode unit 111 can be stably maintained. Therefore, the second side end face G12 and the first auxiliary surface 52b can be stably maintained on the same plane. Also, the third side end face G13 and the second auxiliary surface 52c can be stably maintained on the same plane.
  • the exterior film 130 can be wound around the electrode unit 111 while suppressing the occurrence of deformation such as wrinkles and folds in the exterior film 130.
  • the winding auxiliary body 51 adheres the exterior film 130 to each of the first auxiliary surface 52b and the second auxiliary surface 52c.
  • the exterior film 130 can be wound around the electrode unit 111 while more effectively suppressing the occurrence of deformations such as wrinkles and folds in the exterior film 130.
  • the first lid 140A, the electrode body 115, and the second lid 140B are positioned in this order in the first direction D1.
  • the side end faces G1 of each of the first lid 140A and the second lid 140B include a first side end face G11 and a fourth side end face G14 extending in a second direction D2 non-parallel to the first direction D1, and a second side end face G12 and a third side end face G13 extending in a third direction D3 non-parallel to both the first direction D1 and the second direction D2.
  • the first joining device 70 includes a second seal bar 71B and a third seal bar 71C.
  • the second seal bar 71B contacts a portion of the exterior film 130 located on the second side end face G12.
  • the second seal bar 71B heats the exterior film 130 while pressing it between the second side end face G12.
  • the third seal bar 71C contacts a portion of the exterior film 130 located on the third side end surface G13.
  • the third seal bar 71C heats the exterior film 130 while pressing it against the third side end surface G13.
  • the exterior film 130 can be simultaneously bonded to the second side end surface G12 and the third side end surface G13 by pressing the second seal bar 71B and the third seal bar 71C toward each other in a direction perpendicular to the third direction D3.
  • the electrode unit 111 is automatically held, and the postures of the first cover body 140A and the second cover body 140B can be maintained.
  • the exterior film 130 can be bonded to the second side end surface G12 and the third side end surface G13 more quickly and more stably.
  • the winding device 50 includes a winding support 54 that contacts the exterior film 130 located on the side end surface G1 and restricts the movement of the electrode unit 111 when winding the exterior film 130 around the electrode unit 111.
  • the exterior film 130 can be stably and quickly wound around the electrode unit 111 by using the winding support 54.
  • the exterior film 130 and the side end surface G1 can be joined more quickly and stably.
  • the occurrence of a gap between the side end surface G1 of the first cover 140A and the second cover 140B and the exterior film 130 can be suppressed, and the sealing between the side end surface G1 of the first cover 140A and the second cover 140B and the exterior film 130 can be improved.
  • the first lid body 140A, the electrode body 115, and the second lid body 140B are positioned in this order in the first direction D1.
  • the side end faces G1 of each of the first lid body 140A and the second lid body 140B include a first side end face G11 and a fourth side end face G14 extending in a second direction D2 non-parallel to the first direction D1, and a second side end face G12 and a third side end face G13 extending in a third direction D3 non-parallel to both the first direction D1 and the second direction D2.
  • the winding device 50 includes a winding support 54.
  • the winding support 54 includes a contact surface 55a that contacts the exterior film 130 located on the second side end surface G12, and a support surface 55b that is connected to the contact surface 55a and is located on an extension of the fourth side end surface G14.
  • the movement of the electrode body unit 111 is restricted by the winding support 54 contacting the electrode body unit 111.
  • the exterior film 130 bonded to the third side end surface G13 can be stably folded onto the fourth side end surface G14 and stably maintained in the folded state.
  • a pair of extension parts 132A, 132B extending from the electrode body unit 111 of the exterior film 130 wound around the electrode body unit 111 can be spread on the support surface 55b.
  • the exterior film 130 can be stably and quickly wound around the electrode body unit 111.
  • the exterior film 130 and the side end surface G1 can be bonded more quickly and stably.
  • the first joining device 70 includes a fourth seal bar 71D that contacts a portion of the exterior film 130 located on the fourth side end surface G14 with a pair of extension portions 132A, 132B positioned on the support surface 55b, and heats the exterior film 130 while pressing it between the fourth side end surface G14.
  • the movement of the electrode unit 111 is restricted by the winding support 54 contacting the electrode unit 111.
  • the pair of extension portions 132A, 132B are positioned on the support surface 55b of the winding support 54. This allows the exterior film 130 to be stably joined to the fourth side end surface G14 using the fourth seal bar 71D.
  • the extensions 132A and 132B can be prevented from being positioned between the fourth seal bar 71D and the fourth side end surface G14, the occurrence of deformation such as wrinkles and folds in the exterior film 130 can be prevented when the exterior film 130 is joined to the fourth side end surface G14.
  • the occurrence of gaps between the side end surfaces G1 of the first lid body 140A and the second lid body 140B and the exterior film 130 can be prevented, and the sealing between the side end surfaces of the first lid body 140A and the second lid body 140B and the exterior film 130 can be improved.
  • the manufacturing apparatus 20 further includes a second joining device 90 that joins a pair of extensions 132A, 132B that extend from the electrode unit 111 of the exterior film 130 wrapped around the electrode unit 111 and face each other.
  • the second joining device 90 includes a film seal bar 91 that heats the pair of extensions 132A, 132B arranged on the support surface 55b while pressing them between the support surface 55b.
  • the winding support 54 comes into contact with the electrode unit 111, thereby restricting the movement of the electrode unit 111 relative to the winding support 54 around which the exterior film 130 is wound.
  • the pair of extensions 132A, 132B are positioned on the support surface 55b, so that the winding support 54 can be used as a receiver 92 for the film seal bar 91.
  • the pair of extensions 132A, 132B of the exterior film 130 can be stably joined. This prevents gaps from forming between the pair of extensions 132A and 132B, improving the airtightness between the pair of extensions 132A and 132B.
  • the winding support 54 adsorbs the exterior film 130 to the support surface 55b.
  • the exterior film 130 can be wound around the electrode unit 111 while suppressing the occurrence of deformations such as wrinkles and folds in the exterior film 130.
  • the winding device 50 includes an auxiliary second winding support 56 that contacts the exterior film 130 located on the third side end surface G13.
  • the electrode unit 111 is automatically held and the postures of the first cover 140A and the second cover 140B can be maintained.
  • the exterior film 130 can be more stably joined to the fourth side end surface G14.
  • the pair of extensions 132A, 132B can be positioned on the support surface 55b more quickly and more stably.
  • the pair of extensions 132A, 132B can be joined more quickly and more stably.
  • the manufacturing apparatus 20 and manufacturing method for the energy storage element intermediate 110 manufacture the energy storage element intermediate 110 using the electrode unit 111 and the exterior film 130.
  • the energy storage element intermediate 110 includes a first lid body 140A and a second lid body 140B, an electrode body 115, and a first terminal 117A and a second terminal 117B.
  • the electrode body 115 is located between the first lid body 140A and the second lid body 140B.
  • the first terminal 117A is electrically connected to the electrode body 115.
  • the first terminal 117A is connected to the first lid body 140A.
  • the second terminal 117B is electrically connected to the electrode body 115.
  • the second terminal 117B is connected to the second lid body 140B.
  • the manufactured energy storage element 100 includes an exterior body 120 and an electrode body 115 housed in the exterior body 120.
  • the exterior body 120 includes a first cover body 140A, a second cover body 140B, and an exterior film 130.
  • the manufacturing apparatus 20 includes a first joining device 70 that joins the exterior film 130 wrapped around the electrode unit 111 to the side end surface G1 so as to contact each of the side end surfaces G1 of the first lid body 140A and the second lid body 140B.
  • the manufacturing apparatus 20 may further include a winding device 50 that winds the exterior film 130 around the electrode unit 111 so as to contact each of the side end surfaces G1 of the first lid body 140A and the second lid body 140B in a circumferential manner.
  • the manufacturing method includes a step of joining the exterior film 130, which is wrapped around the electrode unit 111, to the side end surface G1 so as to contact each of the side end surfaces G1 of the first lid body 140A and the second lid body 140B.
  • the manufacturing method may also include a step of wrapping the exterior film 130 around the electrode unit 111 so as to contact each of the side end surfaces G1 of the first lid body 140A and the second lid body 140B in a circumferential manner.
  • the bonding device (first bonding device) 70 includes a roller-type heater 78.
  • the roller-type heater 78 includes a roller 781 including a heated outer peripheral surface 781a, a tip portion 782 that rotatably holds the roller 781, a base end portion 783 that holds the tip portion 782, and a pressure unit 784 located between the base end portion 783 and the tip portion 782.
  • the tip portion 782 is movable relative to the base end portion 783 along an expansion/contraction direction D78 that is not parallel to the rotation axis A781 of the roller 781.
  • the expansion/contraction direction D78 may be perpendicular to the rotation axis A781.
  • the pressure unit 784 is supported by the base end portion 783 and presses the tip portion 782 in a direction in which the roller 781 moves away from the base end portion 783.
  • the manufacturing method is a method for manufacturing the energy storage element intermediate 110 using the manufacturing apparatus 20 according to the first specific example.
  • the manufacturing method includes a step of bonding the exterior film 130, which is wrapped around the electrode unit 110 so as to contact each of the side end surfaces G1 of the first lid body 140A and the second lid body 140B, to the side end surface G1 using a roller-type heater 78.
  • the roller 781 can contact the exterior film 130 and press the exterior film 130 against the side end surface G1 of the lid body 140 even in the portion where the dimension of the lid body 140 has decreased (see 14C).
  • the tip end 782 approaches the base end 783 against the force of the pressure unit 784. Therefore, in the portion where the dimension of the lid body 140 has increased, the roller 781 can contact the exterior film 130 and press the exterior film 130 against the side end surface G1 of the lid body 140.
  • the roller 781 can heat the exterior film 130 while continuing to press the exterior film 130 toward the side end surface 140B of the first lid body 140A and the second lid body with a sufficient force.
  • This allows the exterior film 130 to be more stably joined to the side end surface G1.
  • This prevents gaps from being generated between the side end surface G1 of the first lid body 140A and the second lid body 140B and the exterior film 130, improving the sealing performance between the side end surface G1 of the first lid body 140A and the second lid body 140B and the exterior film 130.
  • the manufacturing apparatus 20 further includes a second joining device 90.
  • the second joining device 90 joins a pair of extensions 123A, 123B that extend from the electrode unit 111 of the exterior film 130 wrapped around the electrode unit 111 and face each other.
  • At least one of the joining device (first joining device) 70 and the second joining device 90 includes a roller-type heater 78.
  • the roller-type heater 78 includes a roller 781 including a heated outer circumferential surface 781a, a tip portion 782 that rotatably holds the roller 781, a base end portion 783 that holds the tip portion 782, and a pressure unit 784 located between the base end portion 783 and the tip portion 782.
  • the tip portion 782 is movable relative to the base end portion 783 along an expansion/contraction direction D78 that is not parallel to the rotation axis A781 of the roller 781.
  • the extension/contraction direction D78 may be perpendicular to the rotation axis A781.
  • the pressure member 784 is supported by the base end 783 and presses the tip end 782 in a direction in which the roller 781 moves away from the base end 783.
  • the manufacturing method is a manufacturing method for manufacturing the energy storage element intermediate 110 using the manufacturing apparatus 20 according to the second specific example.
  • the manufacturing method includes a step of joining the side end face G1 to the exterior film 130 wrapped around the electrode body unit 111, and a step of joining a pair of extension portions 123A, 123B of the exterior film 130 wrapped around the electrode body unit 111, which extend from the electrode body unit 111 and face each other.
  • a roller-type heater 78 is used to join the side end face G1 to the exterior film 130 and/or to join the pair of extension portions 123A, 123B.
  • the roller 781 can contact the exterior film 130 and press the exterior film 130 even in the portion where the dimension of the lid body 140 has decreased. If the dimension of the lid body 140 has increased somewhat, the tip end 782 approaches the base end 783 against the force of the pressure unit 784. Therefore, in the portion where the dimension of the lid body 140 has increased, the roller 781 can contact the exterior film 130 and press the exterior film 130. That is, the roller 781 can heat the exterior film 130 while continuing to press the exterior film 130 with a sufficient force. This can suppress the occurrence of a gap between the two parts to be joined (for example, the exterior film 130 and the side end surface G1, or the first side edge portion A1 and the second extension portion 132B), improving the sealing between the two parts to be joined.
  • a gap between the two parts to be joined for example, the exterior film 130 and the side end surface G1, or the first side edge portion A1 and the second extension portion 132B
  • the deformation resistance of the pressure applying portion 784 is 0.10 N/mm or more and 1.0 N/mm or less.
  • an upper limit to the deformation resistance By setting an upper limit to the deformation resistance, the fluctuation in the force with which the roller heater presses the exterior film 130 due to dimensional changes can be reduced. Therefore, the occurrence of a gap between the two parts to be joined (for example, the exterior film 130 and the side end surface G1, or the first side edge portion A1 and the second extension portion 132B) can be suppressed, and the airtightness between the two parts to be joined can be improved.
  • a lower limit to the deformation resistance By setting a lower limit to the deformation resistance, the relative movement amount of the tip end portion 782 and the base end portion 783 required to apply a predetermined pressure force can be reduced. Therefore, the roller type heater 78 can be made smaller and lighter.
  • the pressure unit 784 includes a spring.
  • the two parts to be joined for example, the exterior film 130 and the side end surface G1, or the first side edge portion A1 and the second extension portion 132B
  • the two parts to be joined can be more stably joined with a simple configuration and simple control.
  • the occurrence of gaps between the two parts to be joined can be suppressed, improving the sealing between the two parts.
  • the first cover 140A, the electrode body 115, and the second cover 140B are positioned in this order in the first direction D1.
  • the side end faces G1 of each of the first cover 140A and the second cover 140B include a first side end face G11 and a fourth side end face G14 extending in a second direction D2 non-parallel to the first direction D1, and a second side end face G12 and a third side end face G13 extending in a third direction D3 non-parallel to both the first direction D1 and the second direction D2.
  • the winding device 50 includes a first film holding portion 31, a second film holding portion 32, a first pushing portion 66, and a second pushing portion 67.
  • the first film holding portion 31 holds a portion of the exterior film 130 that extends from the second side end face G12 in contact with the second side end face G12, the first side end face G11, and the third side end face G13.
  • the second film holding portion 32 holds a portion of the exterior film 130 that extends from the third side end face G13 in contact with the second side end face G12, the first side end face G11, and the third side end face G13.
  • the first pressing portion 66 contacts the exterior film 130 located between the first film holding portion 31 and the second side end face G12.
  • the second pressing portion 67 contacts the exterior film 130 located between the second film holding portion 32 and the third side end face G13.
  • the first pressing portion 66 and the second pressing portion 67 press the exterior film 130 so that the distance D68 between the first pressing portion 66 and the second pressing portion 67 along the second direction D2 is smaller than the length DG14 of the fourth side end surface G14 along the second direction D2.
  • the manufacturing method is a manufacturing method for manufacturing the energy storage element intermediate 110 using the manufacturing apparatus 20 according to the third specific example.
  • the manufacturing method includes a step of supplying an exterior film 130, and a step of winding the exterior film 130 around the electrode unit 111 using a winding device 50 so as to contact each of the side end surfaces G1 of the first lid body 140A and the second lid body 140B, and joining the side end surface G1 and the exterior film 130 using a joining device 70.
  • the exterior film 130 held by the first film holding portion 31 and the second film holding portion 32 can be quickly and stably brought into contact with the second side end surface G12, the first side end surface G11, and the third side end surface G13.
  • the exterior film 130 and the side end surface G1 can be joined more quickly and more stably.
  • the joining device 70 can easily access the exterior film 130 located on the side end face G1. Therefore, it is possible to effectively prevent a gap from being generated between the side end faces G1 of the first lid body 140A and the second lid body 140B and the exterior film 130, and effectively improve the sealing between the side end faces G1 of the first lid body 140A and the second lid body 140B and the exterior film 130.
  • the distance D312 between the first film holding portion 31 and the second film holding portion 32 along the second direction D2 is greater than the distance D68 between the first pressing portion 66 and the second pressing portion 67 along the second direction D2. Therefore, the second side end face G12 and the exterior film 130 can be in more stable contact, and the third side end face G13 and the exterior film 130 can be in more stable contact.
  • the occurrence of gaps between the side end faces G1 of the first lid body 140A and the second lid body 140B and the exterior film 130 can be effectively suppressed, and the airtightness between the side end faces G1 of the first lid body 140A and the second lid body 140B and the exterior film 130 can be effectively improved.
  • the exterior film 130 spreads parallel to the first direction D1 and the second direction D2 between the first film holding portion 31 and the first pressing portion 66, and between the second film holding portion 32 and the second pressing portion 67.
  • the first film holding portion 31 and the second film holding portion 32 can stably hold the exterior film 130. Therefore, the second side end surface G12 and the exterior film 130 can be brought into more stable contact, and the third side end surface G13 and the exterior film 130 can be brought into more stable contact.
  • the manufacturing apparatus 20 includes a fixing device 40 that fixes the first lid 140A and the second lid 140B of the electrode unit 111.
  • the first lid 140A, the electrode 115, and the second lid 140B are positioned in this order in the first direction D1.
  • Each of the first lid 140A and the second lid 140B includes a recess G2a on a surface (outer main surface) G2 that is the outer side in the first direction D1.
  • the fixing device 40 has a chuck body 47 that is inserted into the recess G2a from the outside in the first direction D1.
  • the chuck body 47 holds each lid 140 by expanding the width in the recess G2a in a direction perpendicular to the first direction D1.
  • the manufacturing method is a manufacturing method for manufacturing the energy storage element intermediate 110 using the manufacturing apparatus 20 according to the fourth specific example.
  • the manufacturing method includes a step of fixing the first lid body 140A and the second lid body 140B of the electrode body unit 111, and a step of joining the exterior film 130 wrapped around the electrode body unit 111 so as to contact each of the side end faces G1 of the first lid body 140A and the second lid body 140B to the side end face G1.
  • the fixing device 40 by using the fixing device 40, the appropriate relative positions of the first and second lid bodies 140A and 140B and the exterior film 130 can be maintained. Therefore, the first and second lid bodies 140A and 140B and the exterior film 130 can be stably joined in the appropriate relative positions using the joining device (first joining device) 70.
  • the chuck body 47 holds each lid body 140 by expanding the width in the direction perpendicular to the first direction D1 in the recess G2a. Therefore, the first and second lid bodies 140A and 140B can be fixed while positioning them in the direction perpendicular to the first direction D1.
  • the chuck body 47 is inserted into the recess G2a from the outside in the first direction D1. Therefore, the fixing device 40 can be arranged on the outside of the first and second lid bodies 140A and 140B in the first direction D1. This allows the fixing device 40 to be made smaller.
  • the recesses G2a include a plurality of recesses G2a on the surface (outer main surface) G2 of each of the first and second lid bodies 140A and 140B.
  • the fixing device 40 includes a plurality of chuck bodies 47 that are inserted into the plurality of recesses G2a of each of the lid bodies 140.
  • Each of the plurality of chuck bodies 47 holds each of the lid bodies 140 by expanding its width in a direction perpendicular to the first direction D1.
  • one lid body 140 is held by two or more chuck bodies 47, so that the first and second lid bodies 140A and 140B can be fixed while being positioned in a rotational direction about an axis parallel to the first direction D1.
  • the chuck body 47 includes a plurality of widening pieces 472 inserted into the recess G2a, and a widening piece holding portion 471 that operably holds the plurality of widening pieces 472.
  • the width of the chuck body 47 in a direction perpendicular to the first direction D1 changes as the plurality of widening pieces 472 move relative to the widening piece holding portion 471.
  • the first lid body 140A and the second lid body 140B can be stably fixed with a simple configuration and simple control using the chuck body 47.
  • the manufacturing device 20 includes a film supply device 30 that supplies an exterior film 130.
  • At least one of the film supply device 30 and the winding device 50 includes a film holding section (first film holding section) 31, 29 that holds the exterior film 130.
  • the film holding section 31, 29 includes a first roll 311 and a second roll 312 that holds the exterior film 130 between the first roll 311.
  • the first roll 311 and the second roll 312 are rotatable about an adjustment axis 313A that is not parallel to the first rotation axis 311A of the first roll 311 while holding the exterior film 130.
  • the manufacturing method is a manufacturing method for manufacturing the energy storage element intermediate 110 using the manufacturing apparatus 20 according to the fifth specific example.
  • the manufacturing method includes the steps of supplying the exterior film 130 using the film supply device 30, winding the exterior film 130 around the electrode unit 111 using the winding device 50 so as to contact each of the side end surfaces G1 of the first lid body 140A and the second lid body 140B, and joining the side end surface G1 and the exterior film 130 using the joining device 70.
  • the axis of rotation of the nip roll holding the exterior film may be slightly tilted with respect to the width direction (short direction) of the exterior film.
  • the tension applied to the exterior film varies at each position in the width direction of the exterior film.
  • the tension is then smallest at the long side edge, and wrinkles and sagging may occur at the long side edge. In this case, deformation such as wrinkles and folds may occur in the exterior film on one of the lids.
  • the first roll 311 and the second roll 312 can rotate around the adjustment axis 313A while holding the exterior film 130. Therefore, when tension is applied, the first roll 311 and the second roll 312 holding the exterior film 130 rotate so that the tension variation in the width direction of the exterior film 130 is reduced.
  • the exterior film 130 can be maintained in a taut state while suppressing the occurrence of wrinkles and sagging in the exterior film 130. This allows the exterior film 130 to be wound around the electrode unit 111 while suppressing the occurrence of deformation such as wrinkles and folds in the exterior film 130.
  • the film holding parts 31, 29 include a roll holding part 313 that rotatably holds the first roll 311 and the second roll 312, and a holding base part 314 that rotatably holds the roll holding part 313 around the adjustment axis 313A.
  • the first roll 311 and the second roll 312 can be rotated around the respective rotation axes 311A, 312A, and the first roll 311 and the second roll 312 holding the exterior film 130 can be rotated around the adjustment axis 313A that is not parallel to the rotation axes 311A, 312A.
  • the film holding portion (first film holding portion) 31, 29 can move in a movement direction that is non-parallel to both the rotation axis 311A and the adjustment axis 313A. According to this specific example, tension can be applied to the exterior film 130 held by the film holding portion 31, 29 with a simple configuration.
  • At least one of the film supply device 30 and the winding device 50 includes a guide rail 281 that extends in a movement direction non-parallel to both the rotation axis 311A and the adjustment axis 313A.
  • the film holding parts (first film holding parts) 31, 29 are movable along the guide rail 281. According to this specific example, tension can be applied to the exterior film 130 held by the film holding parts 31, 29 with a simple configuration.
  • At least one of the film supply device 30 and the winding device 50 includes a holding drive unit 282 that moves the film holding unit (first film holding unit) 31, 29 in a movement direction non-parallel to both the rotation axis 311A and the adjustment axis 313A.
  • tension can be applied to the exterior film 130 held by the film holding units 31, 29 with a simple configuration.
  • the first bonding device 70 may include a lid heater 82 that heats the first lid 140A and the second lid 140B.
  • the lid heater 82 may contact the outer main surface G2 of the lid 140 to heat the lid 140.
  • the exterior film 130 can be bonded to the first lid 140A and the second lid 140B more quickly and more stably.
  • the lid heater 82 is more effective when the first lid 140A and the second lid 140B are made of metal.
  • the film supply device 30 may include a surface monitoring unit 64 and a winding controller 65.
  • the winding device 50 includes the surface monitoring unit 64 and the winding controller 65.
  • the surface monitoring unit 64 and the winding controller 65 included in the winding device 50 can be applied to the film supply device 30. According to this example, the occurrence of deformations such as wrinkles and folds in the exterior film 130 supplied to the first film holding unit 31 can be suppressed.
  • the film supply device 30 may include a tension applying device 28.
  • the winding device 50 included the gripping portion 60 functioning as the tension applying device 28, and the inverted crown roll 63A and nip roll 63B functioning as the tension applying device 28.
  • the tension applying device 28 that may be included in the winding device 50 can also be applied to the film supply device 30. According to this example, the occurrence of deformations such as wrinkles and folds in the exterior film 130 supplied to the first film holding portion 31 can be suppressed.
  • a corner heater 77 including a heating protrusion 77b may be used as shown in FIG. 22.
  • each lid 140 may include multiple side end faces G1.
  • a corner G1X may be formed between two adjacent side end faces G1.
  • the corner heater 77 as the spot heater 74 may heat the portion of the exterior film 130 located on the corner G1X and on the two side end faces G1 that form the corner G1X.
  • the corner heater 77 may include a first heating surface 77a1, a second heating surface 77a2, and a heating protrusion 77b.
  • the first heating surface 77a1 may heat at least a portion of the exterior film 130 located on one of the two side end surfaces.
  • the second heating surface 77a2 may heat at least a portion of the exterior film 130 located on one of the two side end surfaces.
  • the first heating surface 77a1 heats a portion of the exterior film 130 located on the fourth side end surface G14.
  • the second heating surface 77a2 heats a portion of the exterior film 130 located on the third side end surface G13.
  • the heating protrusion 77b is located between the first heating surface 77a1 and the second heating surface 77a2.
  • the heating protrusion 77b is connected to both the first heating surface 77a1 and the second heating surface 77a2.
  • the heating protrusion 77b protrudes toward the corner G1X.
  • the corner heater 77 heats the exterior film 130 while pressing the exterior film 130 toward the lid 140.
  • the first heating surface 77a1 and the second heating surface 77a2 heat the exterior film 130 on the side end surface G1 forming the corner G1X.
  • the heating protrusion 77b protrudes from the first heating surface 77a1 and the second heating surface 77a2, and thus locally presses and deforms the exterior film 130 and the lid 140.
  • a depression having a shape corresponding to the shape of the heating protrusion 77b is formed at the corner G1X of the lid 140.
  • the shape of the depression is complementary to the shape of the heating protrusion 77b.
  • the exterior film 130 is aligned with the depression at the corner G1X of the lid 140. That is, the exterior film 130 located on the corner G1X of the lid 140 forms a depression G1b.
  • the bonding between the lid body 140 and the exterior film 130 is likely to be insufficient at the corner G1X.
  • the corner heater 77 including the heating protrusion 77b is used, after the process of bonding the exterior film 130 to the lid body 140 is performed, it can be confirmed that a recess G1b is formed in the portion of the exterior film 130 located at the corner G1X.
  • the recess G1b in the exterior film 130 it can be confirmed that the exterior film 130 has been sufficiently heated and pressurized to the lid body 140.
  • the recess G1b the first lid body 140A and the second lid body 140B and the exterior film 130 can be stably bonded to each other at the corner G1X.
  • the sealing property between the side end surfaces G1 of the first lid body 140A and the second lid body 140B and the exterior film 130 can be improved.
  • excessive heating of the exterior film 130 as a whole can be prevented, thereby preventing damage to the exterior film 130.
  • the manufacturing apparatus 10 or the first bonding apparatus 70 may include a corner sensor 84.
  • the corner sensor 84 detects the depression G1b in the exterior film 130 formed by being pressed by the heating protrusion 77b.
  • Examples of the corner sensor 84 include a distance sensor and a displacement sensor. By using the corner sensor 84, the depression G1b in the exterior film 130 can be confirmed with high accuracy.
  • the configuration of the heating protrusion 77b is not particularly limited. As shown in FIG. 25, the heating protrusion 77b may include linear protrusions 77b1 extending in a direction parallel to both the first heating surface 77a1 and the second heating surface 77a2. The linear protrusions 77b1 extend along the opposing corner G1X. According to the example shown in FIG. 25, it is possible to confirm with high accuracy that the exterior film 130 is joined to the lid 140 over the entire longitudinal length of the corner G1X.
  • the heating protrusion 77b may include a plurality of heating protrusions arranged in an arrangement direction parallel to both the first heating surface 77a1 and the second heating surface 77a2.
  • the plurality of heating protrusions 77b are arranged at intervals in the arrangement direction.
  • Each heating protrusion 77b may be a dot-like protrusion 77b2.
  • the recess G1b can be formed while preventing the heating temperature from becoming too high.
  • the recess G1b can be formed while preventing the applied pressure from becoming too high.
  • the corner heater 77 shown in FIG. 26 can heat and pressurize the exterior film 130 toward the lid body 140 while preventing the heating temperature from becoming too high.
  • the corner heater 77 shown in FIG. 26 can heat and pressurize the exterior film 130 toward the lid body 140 while preventing the applied pressure from becoming too high.
  • the exterior film 130 can be stably bonded to the lid body 140 while preventing damage to the exterior film 130.
  • a chamfered corner G1X may be provided between two adjacent flat side end faces included in each lid 140.
  • the lid 140 includes a flat fourth side end face G14, a flat third side end face G13, and a chamfered corner G1X located between the fourth side end face G14 and the third side end face G13.
  • the chamfered corner G1X includes not only corners that are intentionally chamfered, but also corners that are unintentionally rounded. For example, in a lid 140 manufactured by injection molding with the intention that two adjacent flat faces are perpendicular to each other, a corner obtained due to insufficient flow of molten resin into the portion where the two flat faces connect also falls under the chamfered corner category.
  • the corner heater 77 may include a corner heating surface 77a3 that heats a portion of the exterior film 130 located on the corner G1X.
  • the corner heating surface 77a3 has a radius of curvature ry
  • the corner G1X has a radius of curvature rx.
  • the corner heater 77 may include a first heating surface 77a1 and a second heating surface 77a2 in addition to the corner heating surface 77a3.
  • the corner heating surface 77a3 is located between the first heating surface 77a1 and the second heating surface 77a2.
  • the corner heating surface 77a3 is adjacent to the first heating surface 77a1 and the second heating surface 77a2, respectively.
  • the first heating surface 77a1 contacts the exterior film 130 located on the flat portion adjacent to the corner G1X of the fourth side end surface G14.
  • the first heating surface 77a1 heats and presses the exterior film 130 located on the flat portion adjacent to the corner G1X of the fourth side end surface G14 between the cover body 140.
  • the second heating surface 77a2 comes into contact with the exterior film 130 located on the flat portion adjacent to the corner G1X of the third side end surface G13.
  • the second heating surface 77a2 heats and presses the exterior film 130 located on the flat portion adjacent to the corner G1X of the third side end surface G13 between the cover body 140.
  • the first heating surface 77a1, the second heating surface 77a2, and the corner heating surface 77a3 may be made of an elastic body.
  • the elastic body include rubber and resin.
  • the rubber used for the first heating surface 77a1, the second heating surface 77a2, and the corner heating surface 77a3 may be natural rubber, fluororubber, or silicone rubber.
  • the stability of the bond between the corner G1X and the exterior film 130 was investigated in multiple examples in which the radius of curvature ry and the radius of curvature rx were changed.
  • the stability of the bond between the corner G1X and the exterior film 130 was investigated in multiple examples in which the pressure applied to the lid 140 on the corner G1X was changed.
  • pressure-sensitive paper was placed between the exterior film 130 and the lid 140. The distribution of pressure applied to each position was investigated from the discoloration of the pressure-sensitive paper.
  • an exterior film 130 was placed on the flat fourth side end face G14, the flat third side end face G13, and the chamfered corner G1X located between the fourth side end face G14 and the third side end face G13.
  • the exterior film 130 was heated and pressed toward the lid body 140 using a corner heater 77 including a first heating surface 77a1, a second heating surface 77a2, and a corner heating surface 77a3.
  • the pressure-sensitive paper was rectangular with a longitudinal direction and a lateral direction.
  • the length of the pressure-sensitive paper along the longitudinal direction was 50 mm.
  • the width of the pressure-sensitive paper along the lateral direction was 10 mm.
  • the pressure-sensitive paper was positioned so that the center of the longitudinal direction of the pressure-sensitive paper was located at the center of the corner G1X.
  • the pressure-sensitive paper was positioned so that the lateral direction of the pressure-sensitive paper was parallel to the first direction D1.
  • Figure 29 shows an example of the experimental results.
  • Figure 29 shows the pressure-sensitive paper after the experiment.
  • the colored areas are the areas that received pressure.
  • the darkly colored parts of the pressure-sensitive paper are the areas where high pressure was applied.
  • pressure was applied at a substantially uniform pressure over the entire area above corner G1X.
  • pressure was applied at a substantially uniform pressure over the entire area of the pressure-sensitive paper.
  • the radius of curvature rx of the corner G1X was set to 1.5 mm, and the radius of curvature ry of the corner heating surface 77a3 was set to 2.0 mm.
  • the pressures applied to the center of the corner G1X were 0.1 MPa, 0.2 MPa, 0.3 MPa, 0.4 MPa, and 0.5 MPa.
  • the ratio (ry/rx) of the radius of curvature ry of the corner heating surface 77a3 to the radius of curvature rx of the corner G1X may be 0.50 or more, 0.60 or more, 0.70 or more, 0.80 or more, 0.90 or more, or greater than 1.0.
  • the exterior film 130 could be stably joined to the lid body 140.
  • the ratio (ry/rx) of the radius of curvature ry of the corner heating surface 77a3 to the radius of curvature rx of the corner G1X may be 1.50 or less, 1.45 or less, 1.40 or less, or 1.35 or less.
  • an upper and lower limit may be set for the value (rx-ry) obtained by subtracting the radius of curvature ry of the corner heating surface 77a3 from the radius of curvature rx of the corner G1X.
  • the seal bar 71 included in the first joining device 70 may include a seal bar main body 71x and a contact portion 71y.
  • the seal bar main body 71x may be a member with a built-in heating mechanism.
  • the contact portion 71y contacts the exterior film 130.
  • the contact portion 71y has a lower elastic modulus than the seal bar main body 71x and is more easily deformed.
  • the Young's modulus of the material constituting the contact portion 71y may be smaller than the Young's modulus of the material constituting the surface of the seal bar main body 71x.
  • the material constituting the contact portion 71y may be more easily deformed than the material constituting the surface of the seal bar main body 71x.
  • the material constituting the contact portion 71y may be an elastic body.
  • the material constituting the contact portion 71y may be rubber.
  • the material constituting the contact portion 71y may be natural rubber, fluororubber, or silicone rubber.
  • the thickness of the rubber constituting the contact portion 71y along the direction in which the contact portion 71y presses the exterior film 130 toward the lid body 140 may be 0.1 mm or more and 3.0 mm or less, 0.1 mm or more and 2.5 mm or less, 0.1 mm or more and 2.0 mm or less, 0.1 mm or more and 1.5 mm or less, or 0.1 mm or more and 1.0 mm or less.
  • a lower limit for the rubber thickness the exterior film 130 can be heated and pressurized with a more uniform pressure. As a result, the exterior film 130 can be stably joined to the lid body 140.
  • an upper limit for the rubber thickness the exterior film 130 can be heated sufficiently and efficiently by the heat from the seal bar main body 71x.
  • the seal bar 71 may include a flat heating surface 71y1 and a curved corner heating surface 71y2.
  • the lid body 140 has a chamfered corner G1X between two side end faces.
  • the corner heating surface 71y2 heats and presses the exterior film 130 located on the corner G1X toward the chamfered corner G1X.
  • the flat heating surface 71y1 heats and presses the exterior film 130 located on the flat side end face G1 adjacent to the corner G1X toward the side end face G1.
  • the first seal bar 71A includes one flat heating surface 71y1 and two curved corner heating surfaces 71y2.
  • the two curved corner heating surfaces 71y2 may be the first corner heating surface 71y2 and the second corner heating surface 71y2.
  • the flat heating surface 71y1 is located between the two curved corner heating surfaces 71y2.
  • the flat heating surface 71y1 is adjacent to each of the two curved corner heating surfaces 71y2.
  • the two curved corner heating surfaces 71y2 protrude beyond the flat heating surface 71y1 toward the exterior film 130 to be joined to the lid body 140.
  • the first seal bar 71A heats and presses the exterior film 130 located on the first side end surface G11 toward the first side end surface G11.
  • the exterior film 130 pressed by the first seal bar 71A is bent at both ends of the first side end face G11 toward the second side end face G12 or the third side end face G13 adjacent to the first side end face G11.
  • a chamfered corner G1X is formed between the first side end face G11 and the second side end face G12 of the lid body 140.
  • a chamfered corner G1X is also formed between the first side end face G11 and the third side end face G13 of the lid body 140.
  • the curved corner heating surface 71y2 heats and presses the exterior film 130 located on the chamfered corner G1X toward the corner G1X.
  • the third seal bar 71C includes one flat heating surface 71y1 and two curved corner heating surfaces 71y2.
  • the two curved corner heating surfaces 71y2 may be the first corner heating surface 71y2 and the second corner heating surface 71y2.
  • the flat heating surface 71y1 is located between the two curved corner heating surfaces 71y2.
  • the flat heating surface 71y1 is adjacent to each of the two curved corner heating surfaces 71y2.
  • the two curved corner heating surfaces 71y2 protrude beyond the flat heating surface 71y1 toward the exterior film 130 to be joined to the lid body 140.
  • the third seal bar 71C heats and presses the exterior film 130 located on the third side end surface G13 toward the third side end surface G13.
  • the exterior film 130 pressed by the third seal bar 71C is bent at one end of the third side end face G13 toward the fourth side end face G14 adjacent to the third side end face G13.
  • a chamfered corner G1X is formed between the third side end face G13 and the first side end face G11 of the lid body 140.
  • a chamfered corner G1X is also formed between the third side end face G13 and the fourth side end face G14 of the lid body 140.
  • the curved corner heating surface 71y2 heats and presses the exterior film 130 located on the chamfered corner G1X toward the corner G1X.
  • the second seal bar 71B includes one flat heating surface 71y1 and one curved corner heating surface 71y2.
  • the flat heating surface 71y1 is adjacent to the curved corner heating surface 71y2.
  • the curved corner heating surface 71y2 protrudes beyond the flat heating surface 71y1 toward the exterior film 130 to be joined to the lid body 140.
  • the second seal bar 71B heats and presses the exterior film 130 located on the second side end surface G12 toward the second side end surface G12.
  • a chamfered corner G1X is formed between the second side end face G12 and the first side end face G11 of the lid 140.
  • the curved corner heating surface 71y2 heats and presses the exterior film 130 located on the chamfered corner G1X toward the corner G1X.
  • no chamfered corners G1X are formed between the second side end face G12 and the fourth side end face G14 of the lid body 140.
  • a protrusion G1a is formed between the second side end face G12 and the fourth side end face G14.
  • a pair of extensions 132A, 132B extending from the electrode body unit 111 of the exterior film 130 wrapped around the electrode body unit 111 and facing each other are joined.
  • the protrusions G1a prevent gaps from being formed between the lid body 140 and the pair of extensions 132A, 132B.
  • the exterior film 130 located on the corner G1X between the second side end face G12 and the fourth side end face G14 on which the protrusion G1a is formed is not pressed by the curved corner heating surface 71y2.
  • the flat 71y1 of the second seal bar 71B extends beyond the corner G1X between the second side end face G12 and the fourth side end face G14 from the area facing the second side end face G12 to the first side in the third direction D3 when the exterior film 130 is pressed against the second side end face G12.
  • the heated protrusion G1a can move onto the fourth side end face G14. That is, the curved corner heating surface 71y2 presses the exterior film 130 on the protrusion G1a, thereby preventing the exterior film 130 from being damaged.
  • the seal bar 71 shown in Figures 30 and 31 may include the seal bar body 71x and contact portion 71y described above.
  • the contact portion 71y may include a flat heating surface 71y1 and a corner heating surface 71y2.
  • the flat heating surface 71y1 and the corner heating surface 71y2 may be constituted by the contact portion 71y.
  • seal bar body 71x and the seal bar body 71x may be configured as described above.
  • the material constituting the contact portion 71y may be an elastic body.
  • the material constituting the contact portion 71y may be rubber.
  • the material constituting the contact portion 71y may be natural rubber, fluororubber, or silicone rubber.
  • the thickness of the rubber constituting the contact portion 71y along the direction in which the contact portion 71y presses the exterior film 130 toward the lid body 140 may be 0.1 mm or more and 3.0 mm or less, 0.1 mm or more and 2.5 mm or less, 0.1 mm or more and 2.0 mm or less, 0.1 mm or more and 1.5 mm or less, or 0.1 mm or more and 1.0 mm or less.
  • the exterior film 130 can be heated and pressurized with a more uniform pressure.
  • an upper limit for the rubber thickness the exterior film 130 can be heated sufficiently efficiently by the heat from the seal bar main body 71x.
  • the side end surface G1 and the exterior film 130 are joined while the exterior film 130 is wound around the electrode unit 111.
  • the exterior film 130 may be supplied in a wound state.
  • the first joining device 70 may join the exterior film 130, which is wound around the electrode unit 111, to the side end surface G1 so as to come into contact with each of the side end surfaces G1 of the first lid body 140A and the second lid body 140B.
  • the winding device 50 also functions as the film supplying device 30.
  • the winding device 50 constitutes the film supplying device 30.
  • the film supplying device 30 also functions as the winding device 50.
  • the film supplying device 30 constitutes the winding device 50.
  • the film supplying device 30 and the winding device 50 supply the exterior film 130 in a wound state.
  • the winding device 50 (film supplying device 30) has a gripping portion 60 that grips the exterior film 130, and a guide portion 59 that guides the exterior film 130.
  • the winding device 50 (film supplying device 30) winds the exterior film 130 so that both ends of the sheet of exterior film 130 overlap.
  • the winding device 50 (film supplying device 30) does not wind the exterior film 130 around the electrode unit 111, but winds the exterior film 130 around the guide portion 59.
  • the exterior film 130 is wound around the guide portion 59.
  • the guide portion 59 is not particularly limited.
  • the guide portion 59 may be a roll.
  • the roll may be rotatable.
  • the winding device 50 may further include an auxiliary sealing unit 57.
  • the auxiliary sealing unit 57 temporarily joins the overlapping portions at both ends of the exterior film 130. The temporary joining allows the exterior film 130 to be maintained in a rolled up state.
  • the auxiliary sealing unit 57 includes a seal bar 57A and a seal receiver 57B.
  • the seal receiver 57B supports the overlapping portions at both ends of the exterior film 130.
  • the seal bar 57A heats and presses the exterior film 130 located on the side end surface G1 toward the side end surface G1.
  • the guide portion 59 is pulled out from inside the exterior film 130, both ends of which are overlapped. At this time, the exterior film 130 may move relative to the stopped guide portion 59. The guide portion 59 may move relative to the stopped exterior film 130. Both the guide portion 59 and the exterior film 130 may move.
  • the electrode unit 111 is placed inside the exterior film 130 with both ends overlapped. At this time, the exterior film 130 may move relative to the stopped electrode unit 111. The electrode unit 111 may move relative to the stopped exterior film 130. Both the electrode unit 111 and the exterior film 130 may move.
  • each lid body 140 is joined to the exterior film 130 by a first joining device 70.
  • the first side end surface G11 of each lid body 140 is joined to the first part 131A of the exterior film 130.
  • the second side end surface G12 of each lid body 140 is joined to the second part 131B of the exterior film 130.
  • the third side end surface G13 of each lid body 140 is joined to the third part 131C of the exterior film 130.
  • the fourth side end surface G14 of each lid body 140 is joined to the fourth part 131D of the exterior film 130.
  • the first bonding device 70 includes a roller-type heater 78.
  • the first bonding device 70 in this modified example is not limited to a roller-type heater 78. Any of the various first bonding devices 70 described above can be used in this modified example.
  • the fixing device 40 may fix the lids 140A and 140B as shown in FIG. 35.
  • the fixing device 40 may fix the lids 140A and 140B not only in the step of joining the lid 140 to the side end face G1, but also in other steps of this modified example.
  • the lids 140A and 140B of the electrode unit 111 may be fixed by the fixing device 40.
  • a process is carried out to join a pair of extending portions of the exterior film 130 wrapped around the electrode unit 130, which extend from the electrode unit 111 and face each other. Any of the second joining devices 90 described above may be used in this process.
  • the lids 140A and 140B of the electrode unit 111 may be fixed by the fixing device 40.
  • a pair of extension parts 132A, 132B that extend from the electrode unit 111 of the exterior film 130 wrapped around the electrode unit 111 and face each other are temporarily joined.
  • the temporary joining process may be omitted.
  • the gripping part 60 can maintain the pair of extension parts 132A, 132B in an overlapping state.
  • the lid 140 and the exterior film 130 are joined by heat sealing.
  • the joining of the lid 140 and the exterior film 130 is not limited to heat sealing.
  • the lid 140 and the exterior film 130 may be joined by a method other than heat sealing.
  • the joining of the lid 140 and the exterior film 130 may be welding other than heat sealing. Examples of welding other than heat sealing include ultrasonic welding and high frequency welding.
  • the first joining device 70 may be a vibration device that applies vibration, or pressure and vibration.
  • the joining of the lid 140 and the exterior film 130 may be brazing. Examples of brazing are joining using an adhesive or solder.
  • the joining of the lid 140 and the exterior film 130 may be solid joining. Examples of solid joining are physical joining such as crimping.
  • the pair of extension portions 132A, 132B are joined by heat sealing.
  • the joining of the pair of extension portions 132A, 132B is not limited to heat sealing.
  • the pair of extension portions 132A, 132B may be joined by a method other than heat sealing.
  • the joining of the pair of extension portions 132A, 132B may be welding other than heat sealing. Examples of welding other than heat sealing include ultrasonic welding and high frequency welding.
  • the second joining device 90 may be a vibration device that applies vibration, or pressure and vibration.
  • the joining of the extension portions 132A, 132B may be brazing. Examples of brazing are joining using an adhesive or solder.
  • the joining of the extension portions 132A, 132B may be solid joining. Examples of solid joining are physical joining such as crimping.
  • the lid body 140 has a rectangular shape when observed from the first direction D1, but this is not limited to this example. As already explained, the lid body 140 may have a circular shape, an elliptical shape, a square shape, a diamond shape, or a polygonal shape other than a rectangle when observed from the first direction D1.
  • the side end surface G1 of the rectangular lid body 140 included a first side end surface G11, a second side end surface G12, a third side end surface G13, and a fourth side end surface G14.
  • the first side end surface G11 and the fourth side end surface G14 faced each other to form the long side of the rectangular shape.
  • the second side end surface G12 and the third side end surface G13 faced each other to form the short side of the rectangular shape.
  • This example is not limited to this, and the first side end surface G11 and the fourth side end surface G14 may also face each other to form the short side of the rectangular shape.
  • the second side end surface G12 and the third side end surface G13 faced each other to form the long side of the rectangular shape.
  • first side end face G11 in the claims is not limited to the first side end face G11 in this embodiment, but may be the second side end face G12, the third side end face G13, or the fourth side end face G14.
  • second side end face G12 in the claims is not limited to the second side end face G12 in this embodiment, but may be the first side end face G11, the third side end face G13, or the fourth side end face G14.
  • third side end face G13 in the claims is not limited to the third side end face G13 in this embodiment, but may be the first side end face G11, the second side end face G12, or the fourth side end face G14.
  • fourth side end surface G14 in the claims is not limited to the fourth side end surface G14 in this embodiment, but may be the first side end surface G11, the second side end surface G12, or the third side end surface G13.
  • the manufacturing apparatus 20 may process the electrode unit 111 and the exterior film 130 fully automatically to produce the energy storage element intermediate 110.
  • the process of manufacturing the energy storage element intermediate 110 from the electrode unit 111 and the exterior film 130 may include a process that is performed manually.
  • the process that is performed manually may be performed using the manufacturing apparatus 20.
  • the process that is performed manually may be performed using an apparatus other than the manufacturing apparatus 20.
  • FIGS. 39A to 40H are side views showing one specific example of the manufacturing apparatus 20.
  • the manufacturing apparatus 20 shown in FIG. 39A to 40H includes a first processing apparatus 20A and a second processing apparatus 20B.
  • FIG. 39A to 39K show the first processing apparatus 20A.
  • FIG. 40A to 40H show the second processing apparatus 20B.
  • the first processing device 20A includes a fixing device 40. However, the fixing device 40 is omitted in Figs. 39A to 39K.
  • the second processing device 20B includes a fixing device 40. However, the fixing device 40 is omitted in Figs. 40A to 40H.
  • the first processing device 20A includes a film supply device 30, which includes a roll 33 that holds a roll 130R of the long exterior film 130L. Part of the film supply device 30 is omitted in Figs. 39A to 40K.
  • the combination of the first processing device 20A and the first processing device 20A corresponds to the manufacturing device 20.
  • the first processing device 20A corresponds to the manufacturing device 20 when used alone, and also corresponds to the manufacturing device 20 when combined with the second processing device 20B.
  • the second processing device 20B corresponds to the manufacturing device 20 when used alone, and also corresponds to the manufacturing device 20 when combined with the first processing device 20A.
  • the electrode unit 111 to be processed is supplied to the first processing device 20A.
  • the electrode unit 111 is manually brought into the first processing device 20A.
  • the lid 140 of the electrode unit 111 is fixed using a fixing device 40 (not shown).
  • the first film holding unit 31 of the film supplying device 30 grips the exterior film 130 and unrolls an appropriate length of the long exterior film 130L from the roll 130R.
  • the first film holding unit 31 may include the film holding unit 29 described with reference to FIGS. 36A to 36E.
  • the first film holding unit 31 may include the tension applying device 28 described with reference to FIGS. 36A to 36E.
  • An appropriate length of exterior film 130 used to manufacture one energy storage element intermediate 110 is held in a taut state by the first film holding unit 31 and the second film holding unit 32.
  • the electrode unit 111 moves to an appropriate position within the device.
  • the electrode unit 111 is positioned relative to the exterior film 130.
  • the electrode unit 111 faces the horizontally spread exterior film 130 from below in the vertical direction.
  • the first pushing portion 66 and the second pushing portion 67 of the winding device 50 approach the exterior film 130.
  • the electrode unit 111 to which the lid body 140 is fixed by the fixing device 40, moves upward in the vertical direction (third direction D3).
  • the electrode unit 111 approaches the exterior film 130, comes into contact with the exterior film 130, and then moves upward in the vertical direction (third direction D3).
  • the first side end surface G11 of the lid body 140 comes into contact with the exterior film 130.
  • the exterior film 130 comes into contact with the push roll 68 of the first pressing unit 66 between the first film holding unit 31 and the lid body 140, and is folded.
  • the exterior film 130 comes into contact with the push roll 68 of the second pressing unit 67 between the second film holding unit 32 and the lid body 140, and is folded.
  • the push roll 68 of the first pusher 66 and the push roll 68 of the second pusher 67 approach each other in the horizontal direction (second direction D2).
  • the first pusher 66 and the second pusher 67 push the exterior film 130 so that the distance between the first pusher 66 and the second pusher 67 in the horizontal direction (second direction D2) is smaller than the length of the fourth side end face G14 in the horizontal direction (second direction D2).
  • the exterior film 130 comes into contact with the second side end face G12.
  • the second pusher 67 the exterior film 130 comes into contact with the third side end face G13. That is, as shown in FIG. 39D, the lid body 140 is wrapped around the exterior film 130 from three sides, the second side end face G12, the first side end face G11, and the third side end face G13.
  • the first pressing portion 66 and the second pressing portion 67 also move in the vertical direction (third direction D3).
  • the first pressing portion 66 presses the exterior film 130 so that the exterior film 130, which is maintained in a taut state by the first pressing portion 66 and the first film holding portion 31, spreads out on a horizontal plane.
  • the second pressing portion 67 presses the exterior film 130 so that the exterior film 130, which is maintained in a taut state by the second pressing portion 67 and the first film holding portion 31, spreads out on a horizontal plane.
  • step S46 shown in FIG. 7C, of wrapping the exterior film 130 around the electrode unit 111.
  • the winding device 50 of the first processing device 20A differs from the winding device 50 described with reference to Figures 37A to 37F in the direction of relative movement of the electrode unit 111 in the third direction D3 with respect to the exterior film 130.
  • the winding device 50 of the first processing device 20A may be configured similarly to the winding device 50 described with reference to Figures 37A to 37F.
  • the winding device 50 of the first processing device 20A may be configured similarly to the winding device 50 described with reference to Figures 37A to 37F.
  • the first joining device 70 is used to join the exterior film 130 to the side end surface G1 of the electrode unit 111.
  • the first joining device 70 of the first processing device 20A joins the exterior film 130 to the side end surface G1 of the electrode unit 111 by heat sealing.
  • the first joining device 70 of the first processing device 20A includes a roller-type heater 78.
  • the roller-type heater 78 of the first processing device 20A may be configured similarly to the roller-type heater 78 described with reference to Figures 38A to 38C.
  • the roller heater 78 presses and heats the exterior film 130 toward the second side end surface G12 of the side end surface G1 of the electrode unit 111. As the heated roller 781 of the roller heater 78 moves over the second side end surface G12, the exterior film 130 is heat-sealed to the second side end surface G12 of the side end surface G1 of the lid 140.
  • the heated roller 781 of the roller heater 78 passes over the corner G1X between the second side end face G12 and the first side end face G11.
  • the roller heater 78 functions as a spot heater 74, and bonds the exterior film 130 to the corner G1X of the side end face G1 of the lid body 140.
  • the roller heater 78 presses and heats the exterior film 130 toward the first side end surface G11 of the side end surface G1 of the lid body 140.
  • the heated roller 781 of the roller heater 78 moves over the first side end surface G11, thereby heat-sealing the exterior film 130 to the first side end surface G11 of the side end surface G1 of the lid body 140.
  • the heated roller 781 of the roller heater 78 passes over the corner G1X between the first side end face G11 and the third side end face G13.
  • the roller heater 78 functions as a spot heater 74, and bonds the exterior film 130 to the corner G1X of the side end face G1 of the lid body 140.
  • the roller heater 78 presses and heats the exterior film 130 toward the third side end surface G13 of the side end surface G1 of the lid body 140.
  • the heated roller 781 of the roller heater 78 moves over the third side end surface G13, thereby heat-sealing the exterior film 130 to the third side end surface G13 of the side end surface G1 of the lid body 140.
  • the second film holding portion 32 cuts the exterior film 130.
  • the first pressing portion 66 and the second pressing portion 67 move horizontally away from each other.
  • the first pressing portion 66 and the second pressing portion 67 move vertically upward in parallel with their horizontal movement.
  • the electrode body unit 111 to which the lid body 140 is fixed by the fixing device 40, moves vertically downward. The movement of the electrode body unit 111 may be performed in parallel with the cutting of the exterior film 130 shown in FIG. 39J.
  • the electrode unit 111 in which the exterior film 130 is partially fixed to the side end surface G1 of the lid body 140, is removed from the first processing device 20A.
  • the electrode unit 111 may be removed from the first processing device 20A manually.
  • the electrode unit 111 removed from the first processing device 20A is brought into the second processing device 20B.
  • the electrode unit 111 is brought into the second processing device 20B manually. After that, the lid 140 of the electrode unit 111 is fixed using a fixing device 40 (not shown).
  • the electrode unit 111 may be removed from the first processing device 20A automatically using a device or the like.
  • the electrode unit 111 may be brought into the second processing device 20B automatically using a device or the like.
  • the second processing device 20B includes a winding device 50.
  • the winding device 50 includes a winding support 54.
  • the winding support 54 includes a contact surface 55a and a support surface 55b.
  • the second processing device 20B includes a first film holding portion 29A and a second film holding portion 29B.
  • the first film holding portion 29A and the second film holding portion 29B may each include the film holding portion 29 described with reference to FIGS. 36A to 36E.
  • the first film holding portion 29A and the second film holding portion 29B may each include the tension applying device 28 described with reference to FIGS. 36A to 36E.
  • the electrode unit 111 is attached to the second processing device 20B so that the second side end surface G12 of the lid body 140 contacts the contact surface 55a of the winding support 54.
  • the electrode unit 111 is attached to the second processing device 20B so that the fourth side end surface G14 of the lid body 140 is located on the same plane as the support surface 55b of the winding support 54.
  • the exterior film 130 is joined in order to the second side end face G12, the first side end face G11, and the third side end face G13 of the lid body 140.
  • the first extension portion 132A of the exterior film 130 extending from the second side end face G12 passes over the support surface 55b and is guided to the first film holding portion 29A.
  • the exterior film 130 extending from the third side end face G13 passes over the fourth side end face G14 and the support surface 55b and is guided to the second film holding portion 29B.
  • the first film holding portion 29A holds the exterior film 130.
  • the exterior film 130 is maintained in a taut state between the first film holding portion 29B and the electrode unit 111.
  • the second film holding portion 29B holds the exterior film 130.
  • the exterior film 130 is maintained in a taut state between the second film holding portion 29B and the electrode unit 111.
  • the electrode unit 111, exterior film 130, first film holding part 29A, and second film holding part 29B move to appropriate positions within the second processing device 20B.
  • step S44 of wrapping the exterior film 130 around the electrode unit 111 in the manufacturing method shown in Figure 7C.
  • the first joining device 70 of the second processing device 20B joins the exterior film 130 to the side end surface G1 of the lid body 140 by heat sealing.
  • the first joining device 70 of the second processing device 20B includes a roller type heater 78.
  • the roller type heater 78 of the second processing device 20B can be configured similarly to the roller type heater 78 described with reference to Figures 38A to 38C.
  • the roller heater 78 presses and heats the exterior film 130 toward the third side end surface G13 of the side end surface G1 of the lid body 140. As the heated roller 781 of the roller heater 78 moves over the third side end surface G13, the exterior film 130 is heat-sealed to the third side end surface G13 of the side end surface G1 of the lid body 140.
  • the heated roller 781 of the roller heater 78 passes over the corner G1X between the third side end face G13 and the fourth side end face G14.
  • the roller heater 78 functions as a spot heater 74, and bonds the exterior film 130 to the corner G1X of the side end face G1 of the lid body 140.
  • the exterior film 130 has already been joined to the third side end face G13 of the lid body 140 by processing with the first processing device 20A.
  • the roller 781 does not need to pass over the entire area of the third side end face G13.
  • the exterior film 130 can be more stably joined to the corner G1X between the third side end face G13 and the fourth side end face G14.
  • the roller heater 78 presses and heats the exterior film 130 toward the fourth side end surface G14 of the side end surface G1 of the lid body 140.
  • the heated roller 781 of the roller heater 78 moves over the fourth side end surface G14, thereby heat-sealing the exterior film 130 to the fourth side end surface G14 of the side end surface G1 of the lid body 140.
  • process S45 which shows in FIG. 7C how the exterior film 130 is bonded to the fourth side end surface G14.
  • the second joining device 90 is used to join a pair of extending portions 132A, 132B that extend from the electrode unit 115 of the exterior film 130 wrapped around the electrode unit 111 and face each other.
  • the second joining device 90 of the second processing device 20B joins the pair of extending portions 132A, 132B to each other by heat sealing.
  • the second joining device 90 of the second processing device 20B includes a film seal bar 91. As shown in FIG. 40G, the film seal bar 91 presses and heats the pair of extending portions 132A, 132B toward the support surface 55b of the wound support 54, thereby heat-sealing the pair of extending portions 132A, 132B.
  • step S5 is carried out to join the extensions 132A and 132B as shown in FIG. 7C, and the energy storage element intermediate 110 is obtained.
  • the fixing device 40, the winding support 54, the first film holding part 29A, and the second film holding part 29B return to their predetermined positions. Then, the first film holding part 29A releases the exterior film 130. The second film holding part 29B releases the exterior film 130.
  • the energy storage element intermediate 110 can be removed from the second processing device 20B.

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PCT/JP2024/030107 2023-08-23 2024-08-23 蓄電素子中間体の製造装置、蓄電素子の製造装置、蓄電素子中間体の製造方法、蓄電素子の製造方法、及び蓄電素子の外装体用の蓋体 Pending WO2025041861A1 (ja)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09323704A (ja) * 1996-05-31 1997-12-16 Yuyama Seisakusho:Kk 薬剤包装機
JP2013097890A (ja) * 2011-10-28 2013-05-20 Fujimori Kogyo Co Ltd 封止部材、封止部材の製造方法および蓄電装置用容器
JP2013121849A (ja) * 2011-11-09 2013-06-20 Fuji Impulse Kk ヒートシール装置、シーリング方法、被シール物
JP2015065110A (ja) * 2013-09-26 2015-04-09 日本ゼオン株式会社 二次電池用耐熱セパレータの製造方法
JP2019153556A (ja) * 2018-03-06 2019-09-12 Tdk株式会社 外装体及びこれを用いた電気化学素子
JP2022123686A (ja) 2021-02-12 2022-08-24 トヨタ自動車株式会社 二次電池
WO2023120640A1 (ja) * 2021-12-22 2023-06-29 大日本印刷株式会社 蓋体、蓄電デバイス、蓄電デバイスの製造方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09323704A (ja) * 1996-05-31 1997-12-16 Yuyama Seisakusho:Kk 薬剤包装機
JP2013097890A (ja) * 2011-10-28 2013-05-20 Fujimori Kogyo Co Ltd 封止部材、封止部材の製造方法および蓄電装置用容器
JP2013121849A (ja) * 2011-11-09 2013-06-20 Fuji Impulse Kk ヒートシール装置、シーリング方法、被シール物
JP2015065110A (ja) * 2013-09-26 2015-04-09 日本ゼオン株式会社 二次電池用耐熱セパレータの製造方法
JP2019153556A (ja) * 2018-03-06 2019-09-12 Tdk株式会社 外装体及びこれを用いた電気化学素子
JP2022123686A (ja) 2021-02-12 2022-08-24 トヨタ自動車株式会社 二次電池
WO2023120640A1 (ja) * 2021-12-22 2023-06-29 大日本印刷株式会社 蓋体、蓄電デバイス、蓄電デバイスの製造方法

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