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WO2015114445A3 - Welding method and welding structure - Google Patents

Welding method and welding structure Download PDF

Info

Publication number
WO2015114445A3
WO2015114445A3 PCT/IB2015/000087 IB2015000087W WO2015114445A3 WO 2015114445 A3 WO2015114445 A3 WO 2015114445A3 IB 2015000087 W IB2015000087 W IB 2015000087W WO 2015114445 A3 WO2015114445 A3 WO 2015114445A3
Authority
WO
WIPO (PCT)
Prior art keywords
molten pool
welding
laser light
strength
keyhole
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/IB2015/000087
Other languages
French (fr)
Other versions
WO2015114445A2 (en
Inventor
Hiroya Umeyama
Yasushi Hirakawa
Yukio Harima
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.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
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 Toyota Motor Corp filed Critical Toyota Motor Corp
Publication of WO2015114445A2 publication Critical patent/WO2015114445A2/en
Publication of WO2015114445A3 publication Critical patent/WO2015114445A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B23K26/206—Laser sealing
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
    • B23K26/0604—Shaping the laser beam, e.g. by masks or multi-focusing by a combination of beams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/08—Devices involving relative movement between laser beam and workpiece
    • B23K26/082—Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B23K26/21—Bonding by welding
    • B23K26/24—Seam 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

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Laser Beam Processing (AREA)

Abstract

A welding method disclosed herein is a method for laser-welding a plate-shaped first member (10) and a plate-shaped second member (20). This method includes emitting first laser light (1) having a strength at which a keyhole can be generated to the wide surface of the first member along the first bonding surface (12) and forming a first molten pool (14) formed by being melted by the first laser light, the first molten pool being formed over the second member; and emitting second laser light (2) having a strength lower than a strength at which a keyhole can be generated to the side surface portion of the second member along the second bonding surface (22) and forming a second molten pool (24) formed by being melted by the second laser light, the second molten pool being formed over the first member. The first molten pool and the second molten pool are integrated with each other and form a molten pool and the first member and the second member are welded by a welding portion (30) formed when the molten pool is solidified.
PCT/IB2015/000087 2014-01-30 2015-01-29 Welding method and welding structure Ceased WO2015114445A2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2014015995 2014-01-30
JP2014-015995 2014-01-30
JP2014260806A JP6071010B2 (en) 2014-01-30 2014-12-24 Welding method
JP2014-260806 2014-12-24

Publications (2)

Publication Number Publication Date
WO2015114445A2 WO2015114445A2 (en) 2015-08-06
WO2015114445A3 true WO2015114445A3 (en) 2015-11-26

Family

ID=52692972

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2015/000087 Ceased WO2015114445A2 (en) 2014-01-30 2015-01-29 Welding method and welding structure

Country Status (2)

Country Link
JP (1) JP6071010B2 (en)
WO (1) WO2015114445A2 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6135602B2 (en) * 2014-06-02 2017-05-31 トヨタ自動車株式会社 Secondary battery and manufacturing method thereof
JP6365474B2 (en) 2015-09-11 2018-08-01 トヨタ自動車株式会社 Manufacturing method of secondary battery
JP6660533B2 (en) * 2015-09-15 2020-03-11 パナソニックＩｐマネジメント株式会社 Welding structure and welding method for metal members
JP7078468B2 (en) * 2018-06-29 2022-05-31 プライムアースＥｖエナジー株式会社 Secondary battery, battery container inspection method, and secondary battery manufacturing method
KR102639299B1 (en) * 2018-07-18 2024-02-20 삼성에스디아이 주식회사 Secondary battery and welding method for the same
EP3848147A4 (en) * 2018-09-04 2022-06-01 Furukawa Electric Co., Ltd. WELDING PROCESS AND WELDING APPARATUS
KR20210079190A (en) * 2019-12-19 2021-06-29 주식회사 엘지에너지솔루션 Battery module and method of manufacturing the same
EP3952015A4 (en) * 2019-12-19 2023-02-22 LG Energy Solution, Ltd. BATTERY MODULE AND METHOD OF MANUFACTURING IT
DE102020104462A1 (en) * 2020-02-20 2021-08-26 Precitec Gmbh & Co. Kg Method for analyzing a welded joint during laser welding of workpieces
WO2021230250A1 (en) 2020-05-13 2021-11-18 株式会社村田製作所 Secondary battery and manufacturing method thereof
JP7269443B2 (en) 2020-06-04 2023-05-08 古河電気工業株式会社 Welding method and welding equipment
CN113172341B (en) * 2021-06-07 2022-11-11 中创新航技术研究院(江苏)有限公司 Welding method of battery cover plate
CN115070207A (en) * 2022-07-25 2022-09-20 中创新航科技股份有限公司 Battery cover plate welding method
JP7699574B2 (en) * 2022-12-28 2025-06-27 プライムプラネットエナジー＆ソリューションズ株式会社 Method for manufacturing an electricity storage device and an electricity storage device
EP4585351A1 (en) * 2023-11-24 2025-07-16 Contemporary Amperex Technology (Hong Kong) Limited Battery cell, battery, electrical apparatus, and manufacturing method for battery cell
JP2025170905A (en) 2024-05-08 2025-11-20 プライムプラネットエナジー＆ソリューションズ株式会社 Laser welding jig and battery manufacturing method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110095003A1 (en) * 2009-10-27 2011-04-28 Panasonic Corporation Fusion welding method and fusion welding apparatus
JP2011204396A (en) * 2010-03-24 2011-10-13 Sanyo Electric Co Ltd Sealed battery and method for manufacturing the same
JP2014010897A (en) * 2012-06-27 2014-01-20 Toyota Motor Corp Battery and manufacturing method for the same

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5155323A (en) * 1991-05-16 1992-10-13 John Macken Dual focus laser welding
US6087619A (en) * 1997-05-13 2000-07-11 Fraunhofer Usa Resource Center Dual intensity multi-beam welding system
JP2012130946A (en) * 2010-12-22 2012-07-12 Toyota Motor Corp Method of welding case
JP5803160B2 (en) * 2011-03-09 2015-11-04 Ｊｆｅスチール株式会社 Laser welded steel pipe manufacturing method
EP2859986A4 (en) * 2012-06-12 2016-02-24 Toyota Motor Co Ltd WELDING DEVICE, WELDING METHOD, AND CELL PRODUCTION METHOD

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110095003A1 (en) * 2009-10-27 2011-04-28 Panasonic Corporation Fusion welding method and fusion welding apparatus
JP2011204396A (en) * 2010-03-24 2011-10-13 Sanyo Electric Co Ltd Sealed battery and method for manufacturing the same
JP2014010897A (en) * 2012-06-27 2014-01-20 Toyota Motor Corp Battery and manufacturing method for the same

Also Published As

Publication number Publication date
JP6071010B2 (en) 2017-02-01
WO2015114445A2 (en) 2015-08-06
JP2015163412A (en) 2015-09-10

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