WO2024162134A1 - 蓄電装置 - Google Patents

蓄電装置 Download PDF

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Publication number
WO2024162134A1
WO2024162134A1 PCT/JP2024/002021 JP2024002021W WO2024162134A1 WO 2024162134 A1 WO2024162134 A1 WO 2024162134A1 JP 2024002021 W JP2024002021 W JP 2024002021W WO 2024162134 A1 WO2024162134 A1 WO 2024162134A1
Authority
WO
WIPO (PCT)
Prior art keywords
storage device
current collector
plate
negative electrode
electrode plate
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/JP2024/002021
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
きよみ 神月
真也 下司
真一 坂本
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 Intellectual Property Management Co Ltd
Original Assignee
Panasonic Intellectual Property Management 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 Intellectual Property Management Co Ltd filed Critical Panasonic Intellectual Property Management Co Ltd
Priority to JP2024574490A priority Critical patent/JPWO2024162134A1/ja
Priority to CN202480007378.6A priority patent/CN120500780A/zh
Priority to EP24750084.6A priority patent/EP4661196A1/en
Publication of WO2024162134A1 publication Critical patent/WO2024162134A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/533—Electrode connections inside a battery casing characterised by the shape of the leads or tabs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/536—Electrode connections inside a battery casing characterised by the method of fixing the leads to the electrodes, e.g. by welding
    • 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 a collector plate for a power storage device.
  • Cylindrical batteries which are one type of energy storage device, have a wound electrode body in which a positive electrode plate and a negative electrode plate are wound with a separator interposed between them.
  • Large-diameter cylindrical batteries may also have a structure in which a negative electrode current collector plate is joined to the exposed part of the negative electrode core material protruding from the wound electrode body (hereinafter, referred to as an end-face current collector structure) (for example, Patent Document 1).
  • the present disclosure therefore aims to provide an energy storage device that can improve reliability.
  • the energy storage device is an energy storage device including an electrode body in which a first electrode plate and a second electrode plate are stacked via a separator, a current collector plate arranged at one end side in the axial direction of the electrode body, and an outer can housing the electrode body and the current collector plate, and is characterized in that the current collector plate has an extension portion that extends along the stacking direction of the first electrode plate and the second electrode plate, and a biasing portion that biases the inside of the outer can is provided at the outer peripheral end of the extension portion.
  • the energy storage device disclosed herein can improve reliability.
  • FIG. 1 is a schematic cross-sectional view showing an example of an electricity storage device according to an embodiment
  • FIG. 2 is a perspective view showing a negative electrode current collector plate according to an embodiment of the present invention.
  • FIG. 2 is another perspective view showing a negative electrode current collector plate according to an embodiment of the present invention.
  • FIG. 13 is a schematic diagram showing a state in which the negative electrode current collector plate and the outer can are not centered.
  • 1 is a schematic diagram showing a state in which a negative electrode current collector plate and an outer can are centered.
  • the power storage device 10 is used, for example, as a power source for an electric vehicle.
  • the power storage device of the present disclosure is not limited to being used as a power source for electric vehicles, and may be used, for example, as a power source for motor-driven electric devices such as power tools, power-assisted bicycles, electric motorcycles, electric wheelchairs, electric tricycles, and electric carts.
  • the power storage device of the present disclosure may also be used as a power source for various electric devices used indoors and outdoors, such as cleaners, radios, lighting devices, digital cameras, and video cameras.
  • the energy storage device 10 includes a wound electrode body 14 in which a positive electrode plate 11 as a first electrode plate and a negative electrode plate 12 as a second electrode plate are wound with a separator 13 interposed therebetween, an outer can 20 that houses the electrode body 14, and a sealing body 30 that closes the opening of the outer can 20.
  • the outer can 20 houses an electrolyte together with the electrode body 14.
  • the electrolyte in this embodiment is a non-aqueous electrolyte, but may also be an aqueous electrolyte.
  • the energy storage device may be a capacitor.
  • each member may be described using the axial direction P, the circumferential direction R, and the radial direction D.
  • the side in the axial direction P where the sealing body 30 is provided may be described as the upper side
  • the side where the bottom 20B of the outer can 20 is formed may be described as the lower side.
  • the positive electrode plate 11, the negative electrode plate 12, and the separator 13 are all long strips wound in a spiral shape. At this time, the positive electrode plate 11 and the negative electrode plate 12 are stacked in a shifted manner so that they protrude to opposite sides in the axial direction P (height direction of the storage device 10).
  • the composite layer of the negative electrode plate 12 may be formed to be one size larger than the composite layer of the positive electrode plate 11 in order to prevent lithium precipitation. In other words, the composite layer of the negative electrode plate 12 may be formed to be longer in the longitudinal direction and width direction (short direction) than the composite layer of the positive electrode plate 11.
  • the separator 13 is formed to be at least one size larger than the positive electrode plate 11, and for example, two separators 13 are arranged to sandwich the positive electrode plate 11. Note that the electrode body 14 does not necessarily have to be configured in a state in which the positive electrode plate 11 and the negative electrode plate 12 are wound. For example, the electrode body 14 may be configured by alternately stacking multiple positive electrode plates 11 and multiple negative electrode plates 12.
  • the positive electrode plate 11 has a positive electrode core and a positive electrode mixture layer formed on at least one surface of the core.
  • the positive electrode core is made of a metal foil that is stable in the potential range of the positive electrode plate 11, such as aluminum or an aluminum alloy, or a film with the metal disposed on the surface.
  • the positive electrode mixture layer contains, for example, a positive electrode active material, a conductive agent such as acetylene black, and a binder such as polyvinylidene fluoride, and is preferably formed on both sides of the positive electrode core.
  • the positive electrode active material is, for example, a lithium transition metal complex oxide.
  • the negative electrode plate 12 has a negative electrode core and a negative electrode mixture layer formed on at least one surface of the core.
  • a foil of a metal that is stable in the potential range of the negative electrode plate 12, such as copper or a copper alloy, or a film with the metal disposed on the surface layer can be used.
  • the negative electrode mixture layer preferably contains, for example, a negative electrode active material and a binder such as styrene-butadiene rubber (SBR), and is formed on both sides of the negative electrode core.
  • SBR styrene-butadiene rubber
  • graphite, a silicon-containing compound, etc. are used as the negative electrode active material.
  • the non-aqueous electrolyte contained in the exterior can 20 includes a non-aqueous solvent and an electrolyte salt dissolved in the non-aqueous solvent.
  • a non-aqueous solvent for example, esters, ethers, nitriles, amides, or a mixed solvent of two or more of these is 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 a mixed solvent of these.
  • a lithium salt such as LiPF 6 is used as the electrolyte salt.
  • the non-aqueous electrolyte may be a gel electrolyte, a solid electrolyte, or the like, instead of an electrolytic
  • a positive electrode lead 15 extending from the upper end of the electrode body 14 in the axial direction P and connecting the positive electrode plate 11 constituting the electrode body 14 and the current collector plate 32 of the sealing body 30, and an upper insulating plate 16 disposed between the electrode body 14 and the sealing body 30.
  • the positive electrode lead 15 electrically connects the positive electrode plate 11 and the sealing body 30.
  • the positive electrode cap 31 of the sealing body 30 functions as a positive electrode external terminal as a first electrode external terminal.
  • the upper insulating plate 16 prevents the positive electrode plate 11 and the positive electrode lead 15 from touching the outer can 20, and also prevents the positive electrode lead 15 from touching the negative electrode plate 12 of the electrode body 14.
  • a negative electrode current collector 40 is provided below the electrode body 14.
  • a negative electrode core material exposed portion (not shown) where no negative electrode mixture layer is provided in the negative electrode core material protrudes below the axial direction P of the negative electrode plate 12.
  • the negative electrode core material exposed portion is formed from the end at the start of winding to the end at the end of winding in the longitudinal direction (circumferential direction R) of the long negative electrode plate 12.
  • the negative electrode core material exposed portion is bonded to the negative electrode current collector 40, and the negative electrode plate 12 and the negative electrode current collector 40 are electrically connected.
  • the negative electrode current collector 40 is bonded to the inner surface of the bottom 20B of the outer can 20, and the negative electrode current collector 40 and the outer can 20 are electrically connected.
  • the outer can 20 is a cylindrical metal container with a bottom that is open at the top end in the axial direction P.
  • the outer can 20 is generally made of a metal whose main component is iron, but when the positive electrode plate 11 is connected, it may be made of a metal whose main component is aluminum or the like.
  • the outer can 20 has a cylindrical tube portion 20A, a circular bottom portion 20B when viewed from the bottom, a shoulder portion 20C that is formed in an annular shape along the circumferential direction R of the outer can 20 at the open end of the tube portion 20A, and a groove portion 20D that is formed along the circumferential direction R of the tube portion 20A.
  • the outer can 20 is also provided with a negative electrode cap 21 as a second electrode external terminal (negative electrode external terminal).
  • the groove portion 20D is formed at a position a predetermined length away from the shoulder portion 20C near the opening of the outer can 20.
  • the groove portion 20D is a portion of the tubular portion 20A that protrudes inwardly of the outer can 20, and is formed, for example, by spinning the tubular portion 20A from the outside.
  • the outer can 20 is reduced in diameter, and a thin groove is formed on the outer peripheral surface of the tubular portion 20A.
  • the groove portion 20D has a generally U-shaped cross section, and is preferably formed in a ring shape over the entire length of the tubular portion 20A in the circumferential direction R.
  • the negative electrode cap 21 is electrically connected to the negative electrode plate 12 via the outer can 20 and functions as a negative electrode external terminal.
  • the negative electrode cap 21 is formed in a ring shape with an opening in the center in the radial direction D.
  • the negative electrode cap 21 is welded to the shoulder portion 20C of the outer can 20 and is electrically connected to the outer can 20.
  • the sealing body 30 is formed in a disk shape overall, and includes a positive electrode cap 31, a current collector plate 32, a gasket 33, and an insulating member 34.
  • the sealing body 30 is placed on the groove portion 20D of the outer can 20, and is fixed to the upper end of the outer can 20. More specifically, the shoulder portion 20C of the outer can 20 is bent inward in the radial direction D and crimped against the sealing body 30, and the sealing body 30 is fixed to the upper end of the outer can 20 by the shoulder portion 20C and the groove portion 20D of the outer can 20, and the sealing body 30 closes the opening of the outer can 20.
  • the positive electrode cap 31 is electrically connected to the positive electrode plate 11 via the positive electrode lead 15 and the current collector plate 32, and functions as a positive electrode external terminal.
  • the positive electrode cap 31 is a disk-shaped metal member, and has a protruding portion 31A whose central portion in the radial direction D protrudes outside the energy storage device 10, and a flange portion 31B formed around the protruding portion 31A.
  • the positive electrode cap 31 is disposed on the upper surface side of the sealing body 30, and is exposed to the outside of the exterior can 20 to form the top surface of the energy storage device 10.
  • a positive electrode tab or the like of the current collector member of the energy storage module is joined to the protruding portion 31A by welding.
  • the current collector 32 is electrically connected to the positive electrode plate 11 via the positive electrode lead 15, and functions as a positive electrode current collector.
  • the current collector 32 is a metal member having a diameter similar to that of the positive electrode cap 31.
  • the current collector 32 is formed in a ring shape with an opening in the center in the radial direction D.
  • the current collector 32 is disposed closer to the electrode body 14 than the positive electrode cap 31.
  • the current collector 32 is welded to the positive electrode cap 31, for example, at a position closer to the outer periphery than the center in the radial direction D of the positive electrode cap 31.
  • the gasket 33 is a rubber or resin member that prevents contact between the positive electrode cap 31 and the current collector plate 32 and the outer can 20, and ensures electrical insulation between the outer can 20 and the sealing body 30.
  • the gasket 33 also seals the gap between the outer can 20 and the sealing body 30, sealing the inside of the energy storage device 10.
  • the gasket 33 is provided between the outer periphery of the stack of the positive electrode cap 31 and the current collector plate 32 and the outer can 20.
  • the gasket 33 covers the upper surface of the flange portion 31B of the positive electrode cap 31, the side surfaces of the positive electrode cap 31 and the current collector plate 32, and the lower surface of the current collector plate 32 at the outer periphery of the stack.
  • the negative electrode current collector plate 40 as one example of the embodiment will be described with reference to FIG. 2 to FIG.
  • the negative electrode collector plate 40 has a central portion 41 provided in the center of the radial direction D (the stacking direction of the positive electrode plates 11 and the negative electrode plates 12), and an extension portion 43 extending from the central portion 41 along the radial direction D, each of which will be described in detail later.
  • the central portion 41 has a can bottom joint portion 42 surrounded by a circular groove.
  • the can bottom joint portion 42 is joined to the bottom portion 20B of the outer can 20 by welding.
  • the extension portion 43 has a flat joint portion 44 extending along the radial direction D, and edge portions 45 formed at both ends of the joint portion 44 in the circumferential direction R, as will be described in detail later. Note that the edge portions 45 may be provided at both ends of one joint portion 44, but may also be formed at only one circumferential end.
  • the joint 44 is a portion that is joined to the exposed portion of the negative electrode core material by welding. More specifically, the exposed portion of the negative electrode core material is joined to the upper surface of the joint 44 in the axial direction P by welding.
  • the joint 44 extends along the radial direction D, and is formed in a portion that corresponds to the bottom of the concave shape when viewed from the radial direction D.
  • a biasing portion 46 which will be described in detail later, is formed at the outer end of the joint 44 in the radial direction D.
  • the biasing portion 46 is formed at the outer end of the joint portion 44 in the radial direction D as described above.
  • the biasing portion 46 biases the inside of the outer can 20 when the negative electrode current collector 40 is housed inside the outer can 20.
  • the biasing portion 46 allows the negative electrode current collector 40 and the outer can 20 to be centered, as will be described in detail later.
  • the biasing portion 46 extends outward in the radial direction D from the outer end of the joint 44, and is bent upward in the axial direction P to form a curved surface that faces the inner peripheral surface of the outer can 20. This allows the biasing portion 46 to be formed only by bending. In other words, there is no need to provide a separate biasing member such as a spring member, and the biasing member can be formed with a simple configuration. In addition, since the bent portion comes into contact with the inside of the outer can 20, it is possible to suppress the generation of metal dust when the inside of the outer can 20 comes into contact with the biasing portion 46. In addition, the radial dimension of the negative electrode current collector 40, including the biasing portion 46, is greater than the radial dimension (or stacking direction) of the electrode body 14.
  • biasing portion 46 when the biasing portion 46 is biasing the inside of the exterior can 20, it is bent upward in the axial direction P and is accommodated in the concave shape of the extension portion 43, which forms the joint portion 44 as its base. This prevents the tip of the biasing portion 46 from interfering with the electrode body 24.
  • the negative current collector 140 and the outer can 120 are welded together, if the center of the negative current collector 140 does not coincide with the center of the outer can 20 when viewed from the axial direction P (hereinafter, the negative current collector 140 and the outer can 120 are not centered), when the positive and negative plates expand during charging and discharging, the surface pressure inside the electrode body 114 becomes unbalanced, causing uneven reactions and possibly reducing the cycle life or causing a short circuit.
  • the biasing portion 46 biases the inside of the outer can 20, thereby centering the negative electrode current collector 40 and the outer can 20.
  • the above configuration can prevent the surface pressure inside the electrode body 14 from becoming unbalanced when the positive and negative plates 11 and 12 expand during charging and discharging of the energy storage device 10.
  • the expansion force of the electrode body 14 does not cause contact between the electrode body 14 and the outer casing 20, and stress is not generated at the welded joint between the negative current collector plate 40 and the outer casing 20, nor is stress generated at the welded joint between the negative current collector plate 40 and the electrode body 14. This can improve the reliability of the energy storage device 10.
  • the present disclosure is not limited to the above-described embodiment and its modified examples, and various modifications and improvements are possible within the scope of the matters described in the claims of the present application.
  • the configuration of the current collector plate used in the energy storage device of the present disclosure has been described as a negative current collector plate, but the current collector plate of the present disclosure may also be a positive current collector plate.
  • Electrode body 15 Positive electrode lead, 16 Upper insulating plate, 20 Outer can, 20A Cylinder, 20B Bottom, 20C Shoulder, 20D Groove, 21 Negative electrode cap, 30 Sealing body, 31 Positive electrode cap, 31A Raised portion, 31B Flange portion, 32 Current collector, 33 Gasket, 34 Insulating member, 40 Negative electrode current collector, 41 Center portion, 43 Extension portion, 44 Joint portion, 45 Edge portion, 46 Pressing portion, 114 Electrode body, 120 Outer can, 140 Negative electrode current collector

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Connection Of Batteries Or Terminals (AREA)
PCT/JP2024/002021 2023-01-31 2024-01-24 蓄電装置 Ceased WO2024162134A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2024574490A JPWO2024162134A1 (https=) 2023-01-31 2024-01-24
CN202480007378.6A CN120500780A (zh) 2023-01-31 2024-01-24 蓄电装置
EP24750084.6A EP4661196A1 (en) 2023-01-31 2024-01-24 Power storage device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2023013179 2023-01-31
JP2023-013179 2023-01-31

Publications (1)

Publication Number Publication Date
WO2024162134A1 true WO2024162134A1 (ja) 2024-08-08

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PCT/JP2024/002021 Ceased WO2024162134A1 (ja) 2023-01-31 2024-01-24 蓄電装置

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EP (1) EP4661196A1 (https=)
JP (1) JPWO2024162134A1 (https=)
CN (1) CN120500780A (https=)
WO (1) WO2024162134A1 (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2026070472A1 (ja) * 2024-09-30 2026-04-02 パナソニックＩｐマネジメント株式会社 蓄電装置

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS577166U (https=) * 1980-06-13 1982-01-14
JPH1167185A (ja) * 1997-08-25 1999-03-09 Toyota Autom Loom Works Ltd 電 池
JP2000036319A (ja) * 1998-07-21 2000-02-02 Matsushita Electric Ind Co Ltd アルカリ蓄電池およびその製造方法
JP2005203374A (ja) 2004-01-16 2005-07-28 Samsung Sdi Co Ltd 二次電池
JP2008258145A (ja) * 2007-03-15 2008-10-23 Matsushita Electric Ind Co Ltd 二次電池および二次電池の製造方法
JP2009087915A (ja) * 2007-10-02 2009-04-23 Samsung Sdi Co Ltd ２次電池
JP4681181B2 (ja) * 1999-09-30 2011-05-11 旭硝子株式会社 蓄電素子
CN115411462A (zh) * 2022-09-21 2022-11-29 中创新航科技股份有限公司 电池
WO2023286687A1 (ja) * 2021-07-16 2023-01-19 パナソニックホールディングス株式会社 集電板およびこれを用いた蓄電装置
JP2024506582A (ja) * 2021-10-29 2024-02-14 エルジー エナジー ソリューション リミテッド 改善された集電板を含む円筒形二次電池、それを含むバッテリーパック及び自動車

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS577166U (https=) * 1980-06-13 1982-01-14
JPH1167185A (ja) * 1997-08-25 1999-03-09 Toyota Autom Loom Works Ltd 電 池
JP2000036319A (ja) * 1998-07-21 2000-02-02 Matsushita Electric Ind Co Ltd アルカリ蓄電池およびその製造方法
JP4681181B2 (ja) * 1999-09-30 2011-05-11 旭硝子株式会社 蓄電素子
JP2005203374A (ja) 2004-01-16 2005-07-28 Samsung Sdi Co Ltd 二次電池
JP2008258145A (ja) * 2007-03-15 2008-10-23 Matsushita Electric Ind Co Ltd 二次電池および二次電池の製造方法
JP2009087915A (ja) * 2007-10-02 2009-04-23 Samsung Sdi Co Ltd ２次電池
WO2023286687A1 (ja) * 2021-07-16 2023-01-19 パナソニックホールディングス株式会社 集電板およびこれを用いた蓄電装置
JP2024506582A (ja) * 2021-10-29 2024-02-14 エルジー エナジー ソリューション リミテッド 改善された集電板を含む円筒形二次電池、それを含むバッテリーパック及び自動車
CN115411462A (zh) * 2022-09-21 2022-11-29 中创新航科技股份有限公司 电池

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2026070472A1 (ja) * 2024-09-30 2026-04-02 パナソニックＩｐマネジメント株式会社 蓄電装置

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CN120500780A (zh) 2025-08-15
EP4661196A1 (en) 2025-12-10
JPWO2024162134A1 (https=) 2024-08-08

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