WO2024161967A1 - 円筒形電池 - Google Patents

円筒形電池 Download PDF

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Publication number
WO2024161967A1
WO2024161967A1 PCT/JP2024/000799 JP2024000799W WO2024161967A1 WO 2024161967 A1 WO2024161967 A1 WO 2024161967A1 JP 2024000799 W JP2024000799 W JP 2024000799W WO 2024161967 A1 WO2024161967 A1 WO 2024161967A1
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WO
WIPO (PCT)
Prior art keywords
cylindrical
negative electrode
electrode
metal plate
cylindrical battery
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2024/000799
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English (en)
French (fr)
Japanese (ja)
Inventor
政幹 吉田
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.)
Panasonic Energy Co Ltd
Original Assignee
Panasonic Energy 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 Panasonic Energy Co Ltd filed Critical Panasonic Energy Co Ltd
Priority to JP2024574390A priority Critical patent/JPWO2024161967A1/ja
Priority to EP24749921.3A priority patent/EP4661192A1/en
Priority to CN202480008806.7A priority patent/CN120513547A/zh
Publication of WO2024161967A1 publication Critical patent/WO2024161967A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0431—Cells with wound or folded electrodes
    • 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
    • H01M10/0422—Cells or battery with cylindrical 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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
    • 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
    • H01M50/152—Lids or covers characterised by their shape for cells having curved cross-section, e.g. round or elliptic
    • 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
    • H01M50/167—Lids or covers characterised by the methods of assembling casings with lids by crimping
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/186—Sealing members characterised by the disposition of the sealing members
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/183—Sealing members
    • H01M50/19—Sealing members characterised by the material
    • H01M50/191—Inorganic material
    • 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
    • H01M50/30—Arrangements for facilitating escape of gases
    • 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
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/471—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof
    • H01M50/474—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof characterised by their position inside the 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
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/471—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof
    • H01M50/477—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof 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
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/471—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof
    • H01M50/48—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof characterised by the material
    • H01M50/483—Inorganic material
    • 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
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/586—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries inside the batteries, e.g. incorrect connections of electrodes
    • 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
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
    • H01M50/593—Spacers; Insulating plates
    • 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

  • This disclosure relates to cylindrical batteries.
  • a cylindrical battery comprises an electrode body, a bottomed cylindrical outer can that houses the electrode body, a sealing body that closes the opening of the outer can, and a gasket that is sandwiched between the outer can and the sealing body (see, for example, Patent Document 1).
  • the cylindrical portion of the outer can has a grooved portion and an annular shoulder portion.
  • the grooved portion is formed by recessing part of the cylindrical portion radially inward.
  • the shoulder portion is formed when the end of the opening side of the cylindrical portion is bent inward and crimped to the peripheral edge of the sealing body, and extends radially inward.
  • the sealing body is clamped between the shoulder portion and the grooved portion via the gasket by crimping, and is fixed to the outer can.
  • the object of this disclosure is to provide a cylindrical battery that is less likely to break around the grooved portion on the axial side of the can bottom, even in the event of abnormal heat generation.
  • the cylindrical battery of the present disclosure comprises an electrode body in which a positive electrode and a negative electrode are wound with a separator interposed therebetween, a cylindrical portion including a shoulder portion extending radially inward at one end in the axial direction and a grooved portion recessed radially inward around the entire circumference, and a bottom portion closing the opening on the other axial side of the cylindrical portion, a bottomed cylindrical outer can that houses the electrode body, a sealing body that closes the opening of the outer can, an insulating plate that is arranged between the grooved portion and the electrode body, and a metal plate at least a portion of which is interposed between the grooved portion and the insulating plate.
  • the cylindrical battery disclosed herein is less likely to break around the axial bottom side of the can in the grooved portion even in the event of abnormal heat generation.
  • FIG. 2 is an axial cross-sectional view of a cylindrical battery according to one embodiment of the present disclosure.
  • FIG. 2 is an enlarged cross-sectional view of the periphery of a metal plate in FIG. 1 .
  • FIG. 1 is an axial cross-sectional view of a cylindrical battery according to one embodiment of the present disclosure.
  • FIG. 2 is an enlarged cross-sectional view of the periphery of a metal plate in FIG. 1 .
  • the cylindrical battery according to the present disclosure may be a primary battery or a secondary battery. It may also be a battery using an aqueous electrolyte or a battery using a non-aqueous electrolyte.
  • a non-aqueous electrolyte secondary battery (lithium ion battery) using a non-aqueous electrolyte is exemplified as the cylindrical battery 10, which is one embodiment, but the cylindrical battery according to the present disclosure is not limited to this, and the electrolyte may also be an aqueous electrolyte.
  • the cylindrical battery 10 includes an electrode body 14, a bottomed cylindrical outer can 16 that houses the electrode body 14, a sealing body 17 that closes the opening of the outer can 16, and an annular metal plate 40.
  • the outer can 16 houses a non-aqueous electrolyte together with the electrode body 14.
  • the outer can 16 has a shoulder 29 at its upper end that is bent radially inward and extends inward.
  • the outer can 16 has a grooved portion 22 formed in its side wall, and the sealing body 17 is supported by the grooved portion 22 to close the opening of the outer can 16.
  • the cylindrical battery 10 further includes a gasket 28 interposed between the exterior can 16 and the sealing body 17.
  • the gasket 28 is a ring-shaped resin member attached to the outer periphery of the sealing body 17, and insulates the sealing body 17 from the exterior can 16.
  • the gasket 28 seals the gap between the exterior can 16 and the sealing body 17, sealing the inside of the battery.
  • the gasket 28 is made of, for example, polyolefin.
  • the non-aqueous electrolyte includes a non-aqueous solvent and an electrolyte salt dissolved in the non-aqueous solvent.
  • esters, ethers, nitriles, amides, and mixed solvents of two or more of these are used as the non-aqueous solvent.
  • the non-aqueous solvent may contain a halogen-substituted body in which at least a part of the hydrogen of these solvents is replaced with a halogen atom such as fluorine.
  • the non-aqueous solvent include ethylene carbonate (EC), ethyl methyl carbonate (EMC), dimethyl carbonate (DMC), and mixed solvents thereof.
  • EMC ethyl methyl carbonate
  • DMC dimethyl carbonate
  • mixed solvents thereof ethylene carbonate
  • a lithium salt such as LiPF 6 is used as the electrolyte salt.
  • the non-aqueous electrolyte is not limited to a liquid electrolyte, and may be
  • the electrode body 14 has a positive electrode 11, a negative electrode 12, and a separator 13, and has a wound structure in which the positive electrode 11 and the negative electrode 12 are wound in a spiral shape with the separator 13 in between.
  • the positive electrode 11, the negative electrode 12, and the separator 13 are all long strip-shaped bodies, and are alternately stacked in the radial direction of the electrode body 14 by being wound in a spiral shape.
  • the negative electrode 12 is formed with dimensions slightly larger than the positive electrode 11 to prevent lithium precipitation. In other words, the negative electrode 12 is formed to be longer in the longitudinal direction and width direction than the positive electrode 11.
  • the separator 13 is formed with dimensions at least slightly larger than the positive electrode 11, and for example, two separators 13 are arranged to sandwich the positive electrode 11.
  • a positive electrode lead 20 and a negative electrode lead 21 are connected to the electrode body 14.
  • the positive electrode lead 20 electrically connects the positive electrode 11 to the sealing body 17, and the negative electrode lead 21 electrically connects the negative electrode 12 to the bottom 31 of the outer can 16.
  • the positive electrode lead 20 passes through the opening of the upper insulating plate 18 and extends toward the sealing body 17, and the negative electrode lead 21 passes outside the lower insulating plate 19 and extends toward the bottom 31 of the outer can 16.
  • the positive electrode 11 has a positive electrode core and a positive electrode mixture layer formed on at least one surface of the positive electrode core.
  • the positive electrode core can be a foil of a metal, such as aluminum or an aluminum alloy, that is stable in the potential range of the positive electrode 11, or a film with the metal disposed on the surface.
  • the positive electrode mixture layer contains a positive electrode active material, a conductive agent such as acetylene black, and a binder such as polyvinylidene fluoride (PVdF), and is preferably formed on both sides of the positive electrode core.
  • PVdF polyvinylidene fluoride
  • a lithium transition metal complex oxide containing Ni, Co, Mn, Al, etc. is used as the positive electrode active material.
  • the positive electrode lead 20 is connected to the positive electrode 11, but is preferably directly bonded to the positive electrode core by ultrasonic welding or the like.
  • the negative electrode 12 has a negative electrode core and a negative electrode mixture layer formed on at least one surface of the negative electrode core.
  • the negative electrode core can be made of a foil of a metal, such as copper or a copper alloy, that is stable in the potential range of the negative electrode 12, or a film with the metal disposed on the surface.
  • the negative electrode mixture layer contains a negative electrode active material and a binder such as styrene-butadiene rubber (SBR) or PVdF, and is preferably formed on both sides of the negative electrode core.
  • SBR styrene-butadiene rubber
  • PVdF styrene-butadiene rubber
  • graphite or a silicon-containing compound is used as the negative electrode active material.
  • the negative electrode lead 21 is preferably directly bonded to the negative electrode core by ultrasonic welding or the like. It is also possible to electrically connect the negative electrode 12 and the outer can 16 by bringing the negative electrode core into contact with the inner surface of the outer can 16.
  • the outer can 16 is generally made of a metal whose main component is iron, for example, a material made of nickel-plated iron, but may be made of a metal whose main component is aluminum or the like.
  • the outer can 16 has a cylindrical portion 39 and a bottom portion 31, and the cylindrical portion 39 includes an annular grooved portion 22 and an annular shoulder portion 29.
  • the grooved portion 22 is formed by spinning a portion of the cylindrical portion 39 to recess it radially inward.
  • the shoulder portion 29 is formed when the upper end portion (the end portion on one side in the axial direction) of the cylindrical portion 39 is bent radially inward and crimped to the peripheral portion 33 of the sealing body 17, and extends radially inward at the upper end portion of the cylindrical portion 39.
  • the metal plate 40 is disposed in the exterior can 16 so that at least a portion of it is interposed between the grooved portion 22 and the upper insulating plate 18.
  • the metal plate 40 is made of a metal material, such as nickel or a nickel-plated steel plate.
  • the thickness of the metal plate 40 is, for example, 0.05 mm or more and 0.1 mm or less.
  • the sealing body 17 is fixed to the outer can 16 by being clamped between the shoulder portion 29 and the grooved portion 22 via the gasket 28 by crimping.
  • the grooved portion 22 is formed at a position a predetermined length away from the upper end of the outer can 16.
  • the predetermined length is, for example, a length equivalent to 1 to 20% of the axial length of the outer can 16.
  • the gasket 28 is strongly compressed by the shoulder portion 29, and a part of it protrudes radially inward from between the shoulder portion 29 and the sealing body 17.
  • the sealing body 17 has a structure in which a terminal plate 23, a lower valve body 24, an insulating plate 25, an upper valve body 26, and a sealing plate 27 are layered in this order from the electrode body 14 side.
  • Each member constituting the sealing body 17 has, for example, a disk or ring shape, and each member except for the insulating plate 25 is electrically connected to each other.
  • the sealing plate 27 has a convex shape with the radial center portion protruding outward.
  • the convex portion 27a of the sealing plate 27 includes a sloped portion formed in an annular shape and a flat top surface portion surrounded by the sloped portion.
  • One or more air holes 27b are formed in the top surface portion.
  • the lower valve body 24, insulating plate 25, and upper valve body 26 constitute a current interruption mechanism.
  • the lower valve body 24 and upper valve body 26 are connected at their respective centers, with the insulating plate 25 interposed between their respective peripheral edges. If an abnormality occurs in the cylindrical battery 10 and the internal pressure rises, the lower valve body 24 deforms and pushes the upper valve body 26 toward the sealing plate 27, causing it to break, thereby interrupting the current path between the lower valve body 24 and the upper valve body 26. If the internal pressure rises further, the upper valve body 26 breaks, and gas is discharged from the ventilation hole 27b in the sealing plate 27.
  • the positive electrode lead 20 is connected to the underside of the terminal plate 23 by welding, ultrasonic welding, or the like, and the sealing plate 27, which is the top plate of the sealing body 17 electrically connected to the terminal plate 23, serves as the positive electrode terminal.
  • the negative electrode lead 21 is connected to the inner surface of the bottom 31 of the outer can 16 by welding, ultrasonic welding, or the like, and the outer can 16 serves as the negative electrode terminal.
  • Figure 2 is an enlarged cross-sectional view of the periphery of the metal plate 40 in Figure 1
  • Figure 3 is a perspective view of the metal plate 40.
  • the metal plate 40 has an annular flat portion 41 and a tubular portion 42 that extends from the outer peripheral edge of the flat portion 41 toward the bottom 31 along the inner peripheral surface of the outer can 16.
  • the inner end 41a on the radially inward side of the flat plate portion 41 is located radially outward from the inner end 22b located at the innermost circumference of the annular groove 36 defined by the grooved portion 22.
  • a part of the cylindrical portion 42 is interposed between the electrode body 14 and the outer casing can 16.
  • the lower end 42a of the cylindrical portion 42 (the end of the cylindrical portion 42 on the bottom 31 side) is located lower (toward the bottom 31 side) than the upper end 12a of the negative electrode 12 (the end of the negative electrode 12 on the sealing body 17 side).
  • At least a portion of the metal plate 40 is interposed between the grooved portion 22 and the upper insulating plate 18, so that at least a portion of the groove lower portion 22a located below the annular groove 36 in the grooved portion 22 can be covered with the metal plate 40.
  • the high-temperature gas that is released from the lower end face of the electrode body 14 and flows upward through the gap between the outer casing 16 and the electrode body 14 can be prevented from directly colliding with at least a portion of the groove lower part 22a.
  • damage to the covered part can be prevented, and ultimately, the groove lower part 22a can be prevented from breaking.
  • the corner located on the outer periphery of the lower groove is where the flow of high-temperature gas changes from the axially upper side to the radially inner side, and is where the high-temperature gas directly impinges from the axially lower side, making it vulnerable to breakage.
  • the metal plate 40 has a tubular portion 42 that extends along the inner periphery of the outer can 16, so the metal plate 40 can cover the corner located on the outer periphery of the lower groove 22a. This effectively prevents the corner from breaking when the cylindrical battery 10 generates abnormal heat. It also prevents breakage of the side wall of the outer can 16 that is covered by the tubular portion 42.
  • the axial length of the cylindrical portion 42 is preferably 5 mm or less.
  • the lower end 42a of the cylindrical portion 42 may be located higher (on the axial sealing body 17 side) than the upper end 11a of the positive electrode 11 (the end on the axial sealing body 17 side).
  • the metal plate 40 has a cylindrical portion 42.
  • the metal plate may be an annular member that does not have a cylindrical portion.
  • the metal plate is an annular member, it is preferable that the radial inner end of the metal plate is located radially outward from the inner end located at the innermost circumference of the annular groove defined by the grooved portion, and it is preferable that the radial outer end of the metal plate is located radially outward from the outer peripheral end of the electrode body.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
PCT/JP2024/000799 2023-01-31 2024-01-15 円筒形電池 Ceased WO2024161967A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2024574390A JPWO2024161967A1 (https=) 2023-01-31 2024-01-15
EP24749921.3A EP4661192A1 (en) 2023-01-31 2024-01-15 Cylindrical battery
CN202480008806.7A CN120513547A (zh) 2023-01-31 2024-01-15 圆筒形电池

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2023012667 2023-01-31
JP2023-012667 2023-01-31

Publications (1)

Publication Number Publication Date
WO2024161967A1 true WO2024161967A1 (ja) 2024-08-08

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PCT/JP2024/000799 Ceased WO2024161967A1 (ja) 2023-01-31 2024-01-15 円筒形電池

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Country Link
EP (1) EP4661192A1 (https=)
JP (1) JPWO2024161967A1 (https=)
CN (1) CN120513547A (https=)
WO (1) WO2024161967A1 (https=)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09274923A (ja) 1996-04-03 1997-10-21 Fuji Photo Film Co Ltd 円筒形電池の製造方法
JP2006286284A (ja) * 2005-03-31 2006-10-19 Matsushita Electric Ind Co Ltd 扁平電池およびその製造方法
JP2009238608A (ja) * 2008-03-27 2009-10-15 Sanyo Electric Co Ltd 密閉型アルカリ蓄電池及びその製造方法
KR20110057987A (ko) * 2009-11-25 2011-06-01 삼성에스디아이 주식회사 이차 전지
WO2019194227A1 (ja) * 2018-04-06 2019-10-10 三洋電機株式会社 電池
CN210245556U (zh) * 2019-06-20 2020-04-03 金能电池(东莞)有限公司 一种带胶垫的柱状电池
WO2022202311A1 (ja) * 2021-03-24 2022-09-29 三洋電機株式会社 円筒形非水電解質二次電池
WO2023033391A1 (ko) * 2021-08-30 2023-03-09 주식회사 엘지에너지솔루션 원통형 배터리 셀 및 이를 포함하는 배터리 팩 및 자동차

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09274923A (ja) 1996-04-03 1997-10-21 Fuji Photo Film Co Ltd 円筒形電池の製造方法
JP2006286284A (ja) * 2005-03-31 2006-10-19 Matsushita Electric Ind Co Ltd 扁平電池およびその製造方法
JP2009238608A (ja) * 2008-03-27 2009-10-15 Sanyo Electric Co Ltd 密閉型アルカリ蓄電池及びその製造方法
KR20110057987A (ko) * 2009-11-25 2011-06-01 삼성에스디아이 주식회사 이차 전지
WO2019194227A1 (ja) * 2018-04-06 2019-10-10 三洋電機株式会社 電池
CN210245556U (zh) * 2019-06-20 2020-04-03 金能电池(东莞)有限公司 一种带胶垫的柱状电池
WO2022202311A1 (ja) * 2021-03-24 2022-09-29 三洋電機株式会社 円筒形非水電解質二次電池
WO2023033391A1 (ko) * 2021-08-30 2023-03-09 주식회사 엘지에너지솔루션 원통형 배터리 셀 및 이를 포함하는 배터리 팩 및 자동차

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4661192A1

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