SE546927C2 - Secondary cell - Google Patents

Secondary cell

Info

Publication number
SE546927C2
SE546927C2 SE2251575A SE2251575A SE546927C2 SE 546927 C2 SE546927 C2 SE 546927C2 SE 2251575 A SE2251575 A SE 2251575A SE 2251575 A SE2251575 A SE 2251575A SE 546927 C2 SE546927 C2 SE 546927C2
Authority
SE
Sweden
Prior art keywords
cylindrical
connection surface
secondary cell
conductive sheet
electrode coating
Prior art date
Application number
SE2251575A
Other languages
Swedish (sv)
Other versions
SE2251575A1 (en
Inventor
Dongho Son
Original Assignee
Northvolt Ab
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 Northvolt Ab filed Critical Northvolt Ab
Priority to SE2251575A priority Critical patent/SE546927C2/en
Priority to SE2351026A priority patent/SE2351026A1/en
Publication of SE2251575A1 publication Critical patent/SE2251575A1/en
Priority to PCT/EP2023/086989 priority patent/WO2024133482A1/en
Priority to PCT/EP2023/086876 priority patent/WO2024133415A1/en
Publication of SE546927C2 publication Critical patent/SE546927C2/en

Links

Classifications

    • 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
    • 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
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/536—Electrode connections inside a battery casing characterised by the method of fixing the leads to the electrodes, e.g. by welding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/538—Connection of several leads or tabs of wound or folded electrode stacks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/559—Terminals adapted for cells having curved cross-section, e.g. round, elliptic or button 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
    • H01M50/543—Terminals
    • H01M50/564—Terminals characterised by their manufacturing process
    • H01M50/566—Terminals characterised by their manufacturing process by welding, soldering or brazing
    • 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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Secondary Cells (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

There is disclosed herein a cylindrical secondary cell (1) and method of manufacture thereof. The cylindrical secondary cell comprises a cylindrical can (2) having a beading groove (3) formed in a wall thereof and arranged around the circumference thereof. The cell (1) further comprises a first conductive sheet (4), with first electrode coating (4a), wound to form a jelly roll (5) which is arranged in the can (2). The first conductive sheet (4) comprises a portion free of first electrode coating (4a) which protrudes and axially extends from a first end side (5a) of the jelly roll (5) arranged below the beading groove (3), to a can connection surface (9) above the beading groove (9). The can connection surface (9) is arranged at the first end side (5a) of the jelly roll (5) and configured to form an electrical connection from the jelly roll (5) to the can (2), by attachment of the can connection surface (9) to the portion of the first conductive sheet (4) free of first electrode coating (4a).

Claims (10)

Claims
1. A cylindrical secondary cell (1) comprising: a cylindrical can (2) comprising a beading groove (3) formed in a wall of the cylindrical can (2) and arranged around the circumference of the cylindrical can (2), a first conductive sheet (4), with first electrode coating (4a), wound to form a jelly roll (5) which is arranged in the cylindrical can (2), and first conductive sheet (4) com prises a portion free of first electrode coating (4a) which is unflattened and protrudes and axially extends from a first end side (5a) of thejelly roll (5) arranged below the beading groove (3), to a can connection surface above the beading groove (3), wherein: the can connection surface (9) is arranged at the first end side (5a) of the jelly roll (5) and configured to form an electrical connection from the jelly roll to the cylindrical can (2), by attachment of the can connection surface (9) to the unflattened portion of the first conductive sheet (4) free of first electrode coating (4a).
2. The cylindrical secondary cell according to claim 1, wherein the can connection surface is a current collector disc (6).
3. The cylindrical secondary cell according to claim 1, wherein the can connection surface is a lid configured to be attached to the cylindrical can to thereby close an open end of the cylindrical can.
4. The cylindrical secondary cell according to any preceding claim, wherein the connection surface is welded to the unflattened portion of the first conductive sheet (4) free of first electrode coating (4a).
5. The cylindrical secondary cell according to claim 2, wherein the current collector disc (6) is in direct contact with a |id and/or the cylindrical can (2).
6. The cylindrical secondary cell according to any preceding claim, wherein the jelly roll is axially retained within the cylindrical can by the beading groove.
7. The cylindrical secondary cell according to any preceding claim, wherein the current collector disc (6) and/or the |id comprises at least one through hole (6b) for electrolyte filling.
8. The cylindrical secondary cell according to claim 7, wherein the unflattened portion of the first conductive sheet (4) free of first electrode coating (4a) is configured to form one or more electrolyte channels.
9. A method for manufacturing the secondary cell according to any preceding claim, comprising: arranging the can connection surface against the unflattened portion of the first conductive sheet (4) free of first electrode coating (4a); and welding the can connection surface to the portion of the first conductive sheet (4) free of first electrode coating (4a).
10. The method according to claim 9, further comprising: compressing the can connection surface against the unflattened portion of the first conductive sheet (4) free of first electrode coating (4a) to thereby form a folded welding surface for welding the can connection surface to the portion of the first conductive sheet (4) free of first electrode coating (4a).
SE2251575A 2022-12-23 2022-12-23 Secondary cell SE546927C2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
SE2251575A SE546927C2 (en) 2022-12-23 2022-12-23 Secondary cell
SE2351026A SE2351026A1 (en) 2022-12-23 2023-08-31 Cylindrical battery cell comprising a lid closure
PCT/EP2023/086989 WO2024133482A1 (en) 2022-12-23 2023-12-20 Cylindrical battery cell comprising a lid closure
PCT/EP2023/086876 WO2024133415A1 (en) 2022-12-23 2023-12-20 Secondary cell

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE2251575A SE546927C2 (en) 2022-12-23 2022-12-23 Secondary cell

Publications (2)

Publication Number Publication Date
SE2251575A1 SE2251575A1 (en) 2023-09-18
SE546927C2 true SE546927C2 (en) 2025-03-11

Family

ID=88238132

Family Applications (2)

Application Number Title Priority Date Filing Date
SE2251575A SE546927C2 (en) 2022-12-23 2022-12-23 Secondary cell
SE2351026A SE2351026A1 (en) 2022-12-23 2023-08-31 Cylindrical battery cell comprising a lid closure

Family Applications After (1)

Application Number Title Priority Date Filing Date
SE2351026A SE2351026A1 (en) 2022-12-23 2023-08-31 Cylindrical battery cell comprising a lid closure

Country Status (2)

Country Link
SE (2) SE546927C2 (en)
WO (1) WO2024133415A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110183163A1 (en) * 2010-01-25 2011-07-28 Hitachi Vehicle Energy, Ltd. Sealed Battery Cell and Manufacturing Method Thereof
US20110183172A1 (en) * 2010-01-28 2011-07-28 Hitachi Vehicle Energy, Ltd. Sealed Battery Cell
JP2013026080A (en) * 2011-07-22 2013-02-04 Hitachi Vehicle Energy Ltd Cylindrical secondary battery and manufacturing method thereof
WO2021241215A1 (en) * 2020-05-28 2021-12-02 三洋電機株式会社 Cylindrical battery
WO2022242751A1 (en) * 2021-05-21 2022-11-24 湖北亿纬动力有限公司 Cylindrical lithium-ion battery

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101696964B1 (en) * 2013-10-31 2017-01-16 주식회사 엘지화학 Cylinder type secondary battery with coating layer
KR102872289B1 (en) * 2020-07-27 2025-10-16 주식회사 엘지에너지솔루션 Secondary battery
SE544360C2 (en) * 2021-04-22 2022-04-19 Northvolt Ab Cylindrical secondary cell
JP7610018B2 (en) * 2021-07-06 2025-01-07 ジアンス・コンテンポラリー・アンプレックス・テクノロジー・リミテッド Battery cell, battery, power consumption device, and method and device for manufacturing battery cell
CN114597555B (en) * 2022-03-28 2024-04-12 远景动力技术(江苏)有限公司 Cylindrical battery and method for manufacturing the same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110183163A1 (en) * 2010-01-25 2011-07-28 Hitachi Vehicle Energy, Ltd. Sealed Battery Cell and Manufacturing Method Thereof
US20110183172A1 (en) * 2010-01-28 2011-07-28 Hitachi Vehicle Energy, Ltd. Sealed Battery Cell
JP2013026080A (en) * 2011-07-22 2013-02-04 Hitachi Vehicle Energy Ltd Cylindrical secondary battery and manufacturing method thereof
WO2021241215A1 (en) * 2020-05-28 2021-12-02 三洋電機株式会社 Cylindrical battery
WO2022242751A1 (en) * 2021-05-21 2022-11-24 湖北亿纬动力有限公司 Cylindrical lithium-ion battery

Also Published As

Publication number Publication date
SE2351026A1 (en) 2024-06-24
SE2251575A1 (en) 2023-09-18
WO2024133415A1 (en) 2024-06-27

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