WO2013124992A1 - Closed-end or hearmetically sealed metallic container, and method for manufacturing same - Google Patents

Closed-end or hearmetically sealed metallic container, and method for manufacturing same Download PDF

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Publication number
WO2013124992A1
WO2013124992A1 PCT/JP2012/054307 JP2012054307W WO2013124992A1 WO 2013124992 A1 WO2013124992 A1 WO 2013124992A1 JP 2012054307 W JP2012054307 W JP 2012054307W WO 2013124992 A1 WO2013124992 A1 WO 2013124992A1
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WO
WIPO (PCT)
Prior art keywords
container
bottom plate
metal
plate
double
Prior art date
Application number
PCT/JP2012/054307
Other languages
French (fr)
Japanese (ja)
Inventor
仲子　武文
吉田　剛之
朝田　博
Original Assignee
日新製鋼株式会社
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.)
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Publication date
Application filed by 日新製鋼株式会社 filed Critical 日新製鋼株式会社
Priority to PCT/JP2012/054307 priority Critical patent/WO2013124992A1/en
Priority to TW101111674A priority patent/TW201336141A/en
Publication of WO2013124992A1 publication Critical patent/WO2013124992A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • B21D51/30—Folding the circumferential seam
    • 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
    • H01M50/116—Primary casings; Jackets or wrappings characterised by the material
    • H01M50/117—Inorganic material
    • H01M50/119—Metals
    • 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
    • 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
    • B23K26/244—Overlap seam welding
    • 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
    • B23K26/28—Seam welding of curved planar seams
    • 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
    • B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
    • B23K33/004—Filling of continuous seams
    • B23K33/006—Filling of continuous seams for cylindrical workpieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D7/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal
    • B65D7/12—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls
    • B65D7/34—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls with permanent connections between walls
    • B65D7/36—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls with permanent connections between walls formed by rolling, or by rolling and pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D7/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal
    • B65D7/12—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls
    • B65D7/34—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls with permanent connections between walls
    • B65D7/38—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls with permanent connections between walls formed by soldering, welding, or otherwise uniting opposed surfaces
    • 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
    • H01M50/155—Lids or covers characterised by the material
    • H01M50/157—Inorganic material
    • H01M50/159—Metals
    • 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
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/04—Tubular or hollow articles
    • B23K2101/12—Vessels
    • B23K2101/125—Cans
    • 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 invention relates to a metal bottomed or sealed container in which a bottom plate or a cover plate, or a bottom plate and a cover plate are attached in close contact with a body as a cylindrical container constituting a secondary battery or the like, and a method for manufacturing the same.
  • various power generation elements are housed in a metal container having a cylindrical shape with a bottom on one side, and the opening of the container is hermetically closed with a predetermined lid plate.
  • an electrode terminal is provided there.
  • the opening end is sealed by joining a sealing board to the opening end of the square container formed in the bottomed rectangular tube shape by laser welding. This laser welding has a feature that it has less thermal influence on the electrolytic solution and the electrical insulation portion accommodated in the container than other welding methods and has excellent work efficiency.
  • a double winding method has also been proposed as a method for attaching a sealing plate to a container opening end formed in a bottomed cylindrical shape in a sealed state (for example, Patent Document 3).
  • a sealing plate for example, a double winding method
  • Patent Document 3 a method for attaching a sealing plate to a container opening end formed in a bottomed cylindrical shape in a sealed state.
  • the gap between the tip of the folded part of the container body and the inside of the folded part of the folded part of the sealing plate, and the inside of the folded part of the folded part of the folded part of the sealing plate and the folded part of the container body A seal member is disposed in the gap.
  • the laser beam irradiation is performed under such a condition that the melted portion is melted only halfway through the thickness of the butted portion
  • spatter, fumes and the like may enter the container from the gap of the butted portion.
  • metal powder or the like that has entered from the gap in the butt portion will deteriorate the battery performance. It must be cleaned and removed, which is one factor that increases the cost.
  • the butt weld portion has a structure in which the plate members are directly abutted, so that the pressure resistance strength is not so high.
  • stress is intermittently applied to the butt weld when the entire case expands or contracts during charging and discharging of the secondary battery. There is also a problem that durability is inferior.
  • Patent Document 3 the method proposed in Patent Document 3 in which a container opening end formed in a bottomed cylindrical shape and a sealing plate are hermetically sealed by a double tightening method without using a welding joining method is also provided with a seal member. It takes time and effort. In addition, anxiety remains from the viewpoint of maintaining the sealing performance over a long period of time due to the aging that occurs in seal members mainly made of organic materials.
  • the present invention has been devised to solve such problems, and can be used for a sealed battery such as a secondary battery by attaching the body and the sealing plate in a hermetically sealed manner. It aims at providing the metal bottomed or airtight container excellent in performance and durability, and the manufacturing method excellent in the productivity.
  • the metal bottomed or sealed container of the present invention has a metal bottom plate, or a bottom plate and a cover plate at one end or both ends of a body made of a finite-length metal tube open at both ends.
  • An attached metal bottomed or sealed container, the bottom plate, or the entire peripheral side end of the bottom plate and the cover plate, and one end or both ends of the body are joined by double winding,
  • the bottom plate, or the bottom plate and the cover plate, and one end or both end portions of the body are overlap-welded at the double winding portion.
  • the above-mentioned metal bottomed or sealed container is made up of one end or both ends of a body made of a finite-length metal tube open at both ends, and the bottom plate, or the end on the entire circumference of the bottom plate and the cover plate.
  • the bottom plate, or the bottom plate and the cover plate, and one end or both ends of the fuselage are overlap-welded at the double winding portion.
  • the other end opening end of the finite-length metal bottomed container with one end closed and the other end opened, and the entire circumferential side end of the metal lid plate were joined by double winding. Thereafter, the lid plate and the open end of the container are overlapped and welded at the double winding portion.
  • the pipe end of the tubular body constituting the container is joined to the bottom plate or the entire peripheral side end of the bottom plate and the cover plate by double winding.
  • the lid plate and the end portion of the container are overlap-welded at the double winding portion, a corner portion having high strength and excellent deformation resistance can be obtained.
  • the bottom plate constituting the container, or the entire peripheral side end of the bottom plate and the cover plate, and one end or both ends of the body are joined by double winding, and the bottom plate at the double winding portion, or Since the bottom plate and lid plate and the end of one end or both ends of the fuselage are lap welded, a sealed container with excellent fatigue resistance can be obtained, providing a container with excellent durability as a secondary battery or the like it can.
  • the end of the tubular body constituting the container and the bottom plate, or the bottom plate and the lid plate are not butt-joined, but lap joining is adopted. For example, when laser welding is performed, the allowable range of the target position of laser beam irradiation is widened, and the productivity is dramatically improved.
  • the end opening is covered with a lid of the same size, and the body and the lid are joined by laser welding.
  • the body material and the lid material may be joined together by double winding at their ends. Anxiety remains in terms of maintenance.
  • a metal bottomed or sealed container excellent in deformation resistance and durability can be obtained at low cost by intensively studying the sealing structure between the body and the lid so as to solve the above problems. It can be provided. Details will be described below.
  • An aluminum alloy plate or a stainless steel thin plate is used as a material of a container used for a case of a secondary battery or the like.
  • a method of manufacturing a bottomed or sealed container using a stainless thin steel plate as a material will be described.
  • a mode in which a bottom plate is attached to a cylindrical pipe will be described.
  • there are pipes that require flange processing at the end of the pipe and those that are unnecessary. The case where these are combined will be described with reference to FIG.
  • a pipe made of a stainless steel plate having a thickness of about 0.2 to 0.4 mm and a stainless steel disc having the same thickness are prepared. The diameter of the disc is slightly larger than the diameter of the pipe made.
  • a flange portion is formed at the upper end portion of the cylindrical body, and the outer peripheral flange portion is formed at the entire peripheral end portion of the circular plate by pressing the circular plate serving as the bottom plate. Then, the outer peripheral flange part of the disc used as the bottom plate is placed on the flange part or the end part at the upper end of the cylindrical body. Further, the curved inner surface of the roll having the curved processing portion is regulated along the radial direction of the cylindrical body with respect to the flange portion of the cylindrical body and the outer peripheral flange portion of the disk while restricting the upward movement of the bottom plate. Press from outside.
  • a curled portion obtained by bending the outer peripheral portion outward is integrally formed on the outer peripheral portion of the disc serving as the bottom plate, and the peripheral portion of the opening at the upper end of the cylindrical body is A flange portion formed by bending the peripheral edge portion outward is integrally formed.
  • superposed the curl part of the baseplate so that it might wind around the flange part of a cylindrical body was obtained.
  • the curled portion of the bottom plate and the flange portion of the cylindrical body are further overlapped, and the overlapped portion is pressure-bonded from the outside using a pressing means such as a roller, whereby the cylindrical body and the bottom plate are double wound. It can be joined by tightening.
  • the end portions of the plate material forming the cylindrical body and the bottom plate are further melt-bonded by laser welding in the double winding portion.
  • Laser welding can be performed easily and reliably because there is almost no gap between the ends of the plate members forming the double-tightened portion to form the cylindrical body and the bottom plate.
  • the double tightening structure shown in FIG. 2 has been described for the tightening portion.
  • the structure is not limited to this structure, and as shown in FIGS. 3A and 3B as another example. It may be.
  • the processing can be basically performed by the same method as described above.
  • a sealed container can be manufactured by attaching a lid plate, and a sealed container can also be manufactured by attaching a lid to the open end of a bottomed container obtained by means such as deep drawing.
  • the body is not necessarily limited to the cylindrical body. A cylindrical body having a rectangular cross section may be used as the body by performing any processing on the cylindrical body.
  • the bottom plate, or the bottom plate and the cover plate are double-wrapped and joined to the end of the container body at the end of the entire circumference, and At the double tightening joint, the plate material constituting the bottom plate or the bottom plate and the cover plate and the plate material constituting the container body are melt-bonded. For this reason, in the double wrap joint, a plurality of plate materials are laminated in a plurality of layers, the strength of the outer peripheral portion of the lid plate or the bottom plate is high, and the deformation resistance as a container is excellent. become.
  • the metal sealed container of the present invention is used as a case of a secondary battery, for example, even if it is subjected to fatigue action of expansion / contraction, the place that undergoes fatigue action is not a butt weld, but a bottom plate, or bottom plate and Because it is a double-tightened joint / welded part between the end of the cover plate and the end of the container body, it also has excellent fatigue resistance, contributing to improved durability as a secondary battery. It will be.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Plasma & Fusion (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

A closed-end or hermetically sealed metallic container and a method for manufacturing the container are configured as follows. First, one end or both ends of a body, which comprises a metallic tube having both ends open and having a finite length, and the entire peripheral side end of a metallic bottom plate or the entire peripheral side ends of both the metallic bottom plate and a metallic lid plate are joined by double seaming, or alternatively, first, the opening end at the other end of a metallic closed-end container, which has one end closed and the other end open and which has a finite length, and the entire peripheral side end of a metallic lid plate are joined by double seaming. Then, the bottom plate is lap welded at the double-seamed section to the one end of the body, or alternatively, the bottom plate and the lid plate are lap welded at the double-seamed sections to both ends of the body.

Description

金属製の有底又は密閉容器及びその製造方法Metal bottomed or sealed container and method for manufacturing the same
　本発明は、二次電池等を構成する筒形容器として、胴体に底板又は蓋板、或いは底板及び蓋板を密着して取り付けた金属製の有底又は密閉容器とその製造方法とに関する。 The present invention relates to a metal bottomed or sealed container in which a bottom plate or a cover plate, or a bottom plate and a cover plate are attached in close contact with a body as a cylindrical container constituting a secondary battery or the like, and a method for manufacturing the same.
　近年、ＡＶ機器や携帯電話やノートパソコン等の、ポータブルな電気・電子機器の普及が急速に進んでいる。これらの電気・電子機器が急速に普及した背景として、駆動用電源としてのアルカリ蓄電池、リチウム二次電池に代表される非水電解液二次電池の高性能化、高容量化が挙げられる。これらの二次電池は、駆動用電源として用いる電気自動車やハイブリッド車等、今後、益々の進化が見込まれる機器等の電源装置として用いられ、その市場規模が急速に拡大してきている。 In recent years, portable electric and electronic devices such as AV devices, mobile phones, and notebook personal computers are rapidly spreading. The background of the rapid spread of these electric / electronic devices is the increase in performance and capacity of non-aqueous electrolyte secondary batteries represented by alkaline storage batteries and lithium secondary batteries as drive power sources. These secondary batteries are used as power supply devices for devices such as electric vehicles and hybrid vehicles that are used as power sources for driving, and are expected to further evolve in the future, and the market scale is rapidly expanding.
　このような二次電池においては、一般に、各種の発電要素が、片側有底の筒形状を呈する金属製の容器内に収容され、この容器の開口部が所定の蓋板にて気密に閉塞されるとともに、そこに電極端子が設けられて、構成されている。そして、このような容器においては、有底角筒形状に形成された角形容器の開口端に封口板をレーザー溶接により接合することによって、開口端が封口されている。
　このレーザー溶接は、他の溶接方法に比して容器内部に収容された電解液や電気絶縁部分に対する熱的影響が少なく、作業効率に優れた特徴を有している。 In such a secondary battery, in general, various power generation elements are housed in a metal container having a cylindrical shape with a bottom on one side, and the opening of the container is hermetically closed with a predetermined lid plate. In addition, an electrode terminal is provided there. And in such a container, the opening end is sealed by joining a sealing board to the opening end of the square container formed in the bottomed rectangular tube shape by laser welding.
This laser welding has a feature that it has less thermal influence on the electrolytic solution and the electrical insulation portion accommodated in the container than other welding methods and has excellent work efficiency.
　二次電池に限らず、角筒胴体に、底板又は蓋板、或いは底板及び蓋板をレーザー溶接して密着状態で取り付ける方法として、各種の方法が提案されている。
　例えば特許文献１では、上記方法として、胴体の開口端部に平板状の封口板を当接させ、胴体と封口板とが当接する当接ラインに対して、胴体の側面から斜下方向に照射されるレーザービームを入射させ、このレーザービームにより当接ラインを走査する事によって胴体と封口板との間を溶接することが、提案されている。
　レーザービームの照射角度は異なるが、例えば図１（ａ）に示すように、胴体の側面からレーザービームを照射している。 In addition to the secondary battery, various methods have been proposed as a method of attaching the bottom plate or the cover plate, or the bottom plate and the cover plate in a close contact state to the rectangular tube body by laser welding.
For example, in Patent Document 1, as a method described above, a flat sealing plate is brought into contact with the opening end of the fuselage, and irradiation is performed obliquely downward from the side surface of the fuselage with respect to a contact line where the fuselage and the sealing plate abut. It has been proposed to weld a body and a sealing plate by making a laser beam incident thereon and scanning a contact line with the laser beam.
Although the irradiation angle of the laser beam is different, for example, as shown in FIG. 1A, the laser beam is irradiated from the side surface of the body.
　また、特許文献２では、上記方法として、胴体の長辺側、短辺側の少なくともいずれか一方の対向する面の開口端部の近傍を、外部から中心部へ押圧して変形させた胴体に、蓋体を圧入して嵌合させた後に、蓋体の上方から、胴体の開口端部の内壁面と蓋体側端との当接部にレーザービームを照射して封口することが、提案されている。
　例えば図１（ｂ）に示すように、胴体の側面からではなく、底板側或いは蓋板側からレーザービームを照射している。 Moreover, in patent document 2, as the said method, the vicinity of the opening edge part of the surface which at least any one of the long side of a fuselage | body and a short side side opposes to the center part from the outside is deformed, It is proposed that after the lid is press-fitted and fitted, the laser beam is applied to the contact portion between the inner wall surface of the opening end of the fuselage and the side of the lid from above the lid to seal the body. ing.
For example, as shown in FIG. 1B, the laser beam is irradiated not from the side surface of the body but from the bottom plate side or the cover plate side.
　さらに、上記のような容器において、有底筒形状に形成された容器開口端に封口板を密閉状態で取り付ける方法として二重巻き締め法も提案されている（例えば特許文献３）。
　この方法においては、容器胴体の折り返し部の先端部分と封口板の折り返し部の折曲部分の内側との隙間、及び封口板の折り返し部の先端部分と容器胴体の折り返し部の折曲部分の内側との隙間に、シール部材が配置されている。 Further, in the container as described above, a double winding method has also been proposed as a method for attaching a sealing plate to a container opening end formed in a bottomed cylindrical shape in a sealed state (for example, Patent Document 3).
In this method, the gap between the tip of the folded part of the container body and the inside of the folded part of the folded part of the sealing plate, and the inside of the folded part of the folded part of the folded part of the sealing plate and the folded part of the container body A seal member is disposed in the gap.
特開２０００－１３３２１１号公報Japanese Patent Laid-Open No. 2000-133211 特開２００１－１８５０９２号公報JP 2001-185092 A 特許第４４９１７５３号公報Japanese Patent No. 4491753
　ところで、レーザー溶接する際には、被接合体同士が隙間なく当接していることが要求される。このため、上記特許文献１の方法で胴体と封口板との間を溶接しようとすると、胴体端部の平面度を高めることが必要となる。胴体端部に凹凸があると、封口板との間の隙間が生じて溶接不良が発生しやすくなるので、胴体端部を高い精度でカットする必要がある。
　また、特許文献２の方法でも、底板の輪郭形状と胴体の内寸との寸法差が大きいと、溶接不良が発生しやすく、寸法差が小さいと底板を嵌め込む組立て作業が困難となる。すなわち、特許文献２の方法で有底又は密閉容器を製造しようとすると、底板と胴体との嵌め合い精度を高めるべく、部材の寸法精度を高める必要があるため、コスト高となってしまう。 By the way, when performing laser welding, it is required that the objects to be joined are in contact with each other with no gap. For this reason, if it is going to weld between a fuselage and a sealing board by the method of the said patent document 1, it will be necessary to raise the flatness of a fuselage edge part. If there are irregularities on the end of the fuselage, a gap between the sealing plate and a weld defect is likely to occur, so it is necessary to cut the end of the fuselage with high accuracy.
Also in the method of Patent Document 2, if the dimensional difference between the contour shape of the bottom plate and the inner dimension of the body is large, poor welding is likely to occur, and if the dimensional difference is small, the assembly work for fitting the bottom plate becomes difficult. That is, when it is going to manufacture a bottomed or airtight container by the method of patent document 2, since it is necessary to raise the dimensional accuracy of a member in order to raise the fitting precision of a baseplate and a trunk | drum, it will become high cost.
　さらに、レーザービーム照射を、突合せ部の厚みの途中までしか溶融しない部分溶け込みとなるような条件で行っても、突合せ部の隙間からスパッターやヒューム等が容器内に侵入することがある。例えば、このような状態で製造した角形容器を二次電池のケースとして使用とすると、突合せ部の隙間から侵入した金属粉等が電池性能を低下させることになるので、容器製造後に金属粉等を洗浄、除去する必要があり、コスト高となる一要因ともなっている。
　さらにまた、製造された有底又は密閉容器では、突合せ溶接部は板部材がそのまま突き合わせられた構造となっているために、耐圧強度もさほど高くない。しかも、この密閉容器を二次電池のケースとして使用した場合、二次電池の充放電時にケース全体が膨らんだり縮んだりするときに上記突合せ溶接部に応力が断続的に付加されるため、疲労破壊を起こし易く耐久性が劣るといった問題点もある。 Furthermore, even if the laser beam irradiation is performed under such a condition that the melted portion is melted only halfway through the thickness of the butted portion, spatter, fumes and the like may enter the container from the gap of the butted portion. For example, if a rectangular container manufactured in such a state is used as a case for a secondary battery, metal powder or the like that has entered from the gap in the butt portion will deteriorate the battery performance. It must be cleaned and removed, which is one factor that increases the cost.
Furthermore, in the manufactured bottomed or sealed container, the butt weld portion has a structure in which the plate members are directly abutted, so that the pressure resistance strength is not so high. In addition, when this sealed container is used as a case for a secondary battery, stress is intermittently applied to the butt weld when the entire case expands or contracts during charging and discharging of the secondary battery. There is also a problem that durability is inferior.
　一方、溶接接合法を用いずに、有底筒形状に形成された容器開口端と封口板とを二重巻き締め法で密閉状態に取り付ける特許文献３で提案された方法も、シール部材を配置するために手間が掛かる。しかも、主に有機系素材からなるシール部材に発生する経年劣化から、長期間に亘っての密封性の維持という観点で不安が残る。
　本発明は、このような問題点を解消するために案出されたものであり、胴体と封口板とを密閉して取り付けることによって、二次電池などの密閉型電池に使用可能な、耐変形能及び耐久性に優れた金属製の有底又は密閉容器と、その生産性に優れた製造方法とを提供することを目的とする。 On the other hand, the method proposed in Patent Document 3 in which a container opening end formed in a bottomed cylindrical shape and a sealing plate are hermetically sealed by a double tightening method without using a welding joining method is also provided with a seal member. It takes time and effort. In addition, anxiety remains from the viewpoint of maintaining the sealing performance over a long period of time due to the aging that occurs in seal members mainly made of organic materials.
The present invention has been devised to solve such problems, and can be used for a sealed battery such as a secondary battery by attaching the body and the sealing plate in a hermetically sealed manner. It aims at providing the metal bottomed or airtight container excellent in performance and durability, and the manufacturing method excellent in the productivity.
　本発明の金属製の有底又は密閉容器は、その目的を達成するために、両端が開放した有限長の金属管よりなる胴体の片端又は両端に、金属製の底板、又は底板及び蓋板が取付けられた金属製の有底又は密閉容器であって、底板、又は底板及び蓋板の全周側端部と、胴体の片端又は両端の端部とが二重巻き締めによって接合されるとともに、当該二重巻き締め部で底板、又は底板及び蓋板と、胴体の片端又は両端の端部とが重ね溶接されている。 In order to achieve the object, the metal bottomed or sealed container of the present invention has a metal bottom plate, or a bottom plate and a cover plate at one end or both ends of a body made of a finite-length metal tube open at both ends. An attached metal bottomed or sealed container, the bottom plate, or the entire peripheral side end of the bottom plate and the cover plate, and one end or both ends of the body are joined by double winding, The bottom plate, or the bottom plate and the cover plate, and one end or both end portions of the body are overlap-welded at the double winding portion.
　一端が閉じられ且つ他端が開放された有限長の金属製の有底容器の他端開口部に金属製の蓋板が取付けられた金属製の密閉容器においては、容器の開放された側の端部と蓋板の全周側端部とが二重巻き締めによって接合されるとともに、当該二重巻き締め部で蓋板と容器の端部とが重ね溶接されている。 In a metal sealed container in which a metal lid plate is attached to the other end opening of a finite-length metal bottomed container with one end closed and the other end opened, The end portion and the end portion on the entire circumference side of the lid plate are joined by double winding, and the lid plate and the end portion of the container are overlap-welded at the double winding portion.
　上記のような金属製の有底又は密閉容器は、両端が開放した有限長の金属管よりなる胴体の片端又は両端の端部と、底板、又は底板及び蓋板の全周側端部とを二重巻き締めによって接合した後、当該二重巻き締め部で底板、又は底板及び蓋板と、胴体の片端又は両端の端部とを重ね溶接することによって製造される。
　また、一端が閉じられ且つ他端が開放された有限長の金属製の有底容器の他端開口端部と、金属製の蓋板の全周側端部とを二重巻き締めによって接合した後、当該二重巻き締め部で蓋板と容器の開口端部とを重ね溶接することによって製造される。 The above-mentioned metal bottomed or sealed container is made up of one end or both ends of a body made of a finite-length metal tube open at both ends, and the bottom plate, or the end on the entire circumference of the bottom plate and the cover plate. After joining by double winding, the bottom plate, or the bottom plate and the cover plate, and one end or both ends of the fuselage are overlap-welded at the double winding portion.
In addition, the other end opening end of the finite-length metal bottomed container with one end closed and the other end opened, and the entire circumferential side end of the metal lid plate were joined by double winding. Thereafter, the lid plate and the open end of the container are overlapped and welded at the double winding portion.
　本発明により提供される金属製の有底又は密閉容器では、容器を構成する管体の管端と、底板、又は底板及び蓋板の全周側端部とが、二重巻き締めによって接合されるとともに、当該二重巻き締め部で蓋板と容器の端部とが重ね溶接されているので、コーナー部の強度が高く耐変形能に優れたものが得られる。また、容器を構成する底板、又は底板及び蓋板の全周側端部と、胴体の片端又は両端の端部とが二重巻き締めによって接合されるとともに、二重巻き締め部で底板、又は底板及び蓋板と、胴体の片端又は両端の端部とが重ね溶接されているので、耐疲労強度の優れた密閉容器が得られ、二次電池等の容器として耐久性に優れたものを提供できる。
　また、本発明の製造方法では、上述した通り、容器を構成する管体の端部と、底板、又は底板及び蓋板とを、突合せ接合するのではなく、重ね接合を採用することになるので、例えばレーザー溶接を行う際にレーザービーム照射の狙い位置の許容範囲が広がって生産性が飛躍的に向上する。 In the metal bottomed or sealed container provided by the present invention, the pipe end of the tubular body constituting the container is joined to the bottom plate or the entire peripheral side end of the bottom plate and the cover plate by double winding. In addition, since the lid plate and the end portion of the container are overlap-welded at the double winding portion, a corner portion having high strength and excellent deformation resistance can be obtained. Also, the bottom plate constituting the container, or the entire peripheral side end of the bottom plate and the cover plate, and one end or both ends of the body are joined by double winding, and the bottom plate at the double winding portion, or Since the bottom plate and lid plate and the end of one end or both ends of the fuselage are lap welded, a sealed container with excellent fatigue resistance can be obtained, providing a container with excellent durability as a secondary battery or the like it can.
Further, in the manufacturing method of the present invention, as described above, the end of the tubular body constituting the container and the bottom plate, or the bottom plate and the lid plate are not butt-joined, but lap joining is adopted. For example, when laser welding is performed, the allowable range of the target position of laser beam irradiation is widened, and the productivity is dramatically improved.
胴材に底板、蓋板を被せレーザー溶接する一般的な態様を説明する断面側面図である。It is a cross-sectional side view explaining the general aspect which puts a baseplate and a cover plate on a trunk | drum, and laser-welds. 胴材に底板を二重巻き締め法で接合する本発明による方法を説明する断面側面図である。It is a sectional side view explaining the method by this invention which joins a baseplate to a trunk | drum by a double winding method. 胴材と底板との二重巻き締め構造の別態様を説明する断面側面図である。It is a cross-sectional side view explaining another aspect of the double winding structure of a trunk | drum and a baseplate.
　角筒胴体に底板、又は底板及び蓋板を密着させて取り付けた金属製の有底又は密閉容器を製造する一般的な方法は、図１に見られるように、角筒体を胴材とし、その端部開口部に同寸法の蓋を被せ、胴材と蓋材とをレーザー溶接接合している。
　このような製造方法を採用すると、上述した通りの問題点がある。
　また特許文献２に見られるように、胴材と蓋材とをそれらの端部で二重巻き締めによって接合することもあるが、シール部材の経年劣化から、長期間に亘っての密封性の維持という点では不安が残る。
　本発明は、上記問題点を解消するべく胴材と蓋材との間の密閉構造について鋭意検討を重ねることによって、耐変形能及び耐久性に優れた金属製の有底又は密閉容器を安価に提供できるようになったものである。
　以下にその詳細を説明する。 A general method of manufacturing a metal bottomed or sealed container with a bottom plate, or a bottom plate and a cover plate attached to a square cylinder body, as shown in FIG. The end opening is covered with a lid of the same size, and the body and the lid are joined by laser welding.
When such a manufacturing method is adopted, there are problems as described above.
In addition, as seen in Patent Document 2, the body material and the lid material may be joined together by double winding at their ends. Anxiety remains in terms of maintenance.
In the present invention, a metal bottomed or sealed container excellent in deformation resistance and durability can be obtained at low cost by intensively studying the sealing structure between the body and the lid so as to solve the above problems. It can be provided.
Details will be described below.
　まず、本発明の好ましい製造方法から説明する。
　二次電池のケース等に用いられる容器の素材としてアルミニウム合金板やステンレス鋼の薄板が用いられるが、本明細書ではステンレス薄鋼板を素材とした有底又は密閉容器の製造方法について説明する。説明を簡単にするため、円筒体であるパイプに底板を取り付ける態様について説明する。また、巻き締め部の構造によってはパイプの端部にフランジ加工が必要なものと不要なものがあるが、ここではパイプの端部にフランジ部を形成し二重巻き締め構造にてパイプ及び底板を結合する場合について、図２を参照して説明する。
　まず、板厚０．２～０．４ｍｍ程度のステンレス鋼板を素材としたパイプと、同程度の板厚を有するステンレス鋼の円板とを準備する。なお、円板の径は、造管されたパイプの径よりもわずかに大きくする。 First, a preferable production method of the present invention will be described.
An aluminum alloy plate or a stainless steel thin plate is used as a material of a container used for a case of a secondary battery or the like. In this specification, a method of manufacturing a bottomed or sealed container using a stainless thin steel plate as a material will be described. In order to simplify the description, a mode in which a bottom plate is attached to a cylindrical pipe will be described. In addition, depending on the structure of the tightening part, there are pipes that require flange processing at the end of the pipe and those that are unnecessary. The case where these are combined will be described with reference to FIG.
First, a pipe made of a stainless steel plate having a thickness of about 0.2 to 0.4 mm and a stainless steel disc having the same thickness are prepared. The diameter of the disc is slightly larger than the diameter of the pipe made.
　次に、円筒体の上端部にフランジ部を形成するとともに、底板となる円板に対してもプレス加工を施して当該円板の全周端部に外周フランジ部を形成する。
　その後、円筒体上端のフランジ部或いは端部の上に、底板となる円板の外周フランジ部を載置する。さらに、底板の上方への移動を規制しつつ、湾曲した加工部を有するロールの湾曲した内面を、円筒体のフランジ部と円板の外周フランジ部とに対して、円筒体の径方向沿いに外側から押圧する。湾曲した加工部を有するロールを徐々に円筒体の中心側に移動することによって、その回転軌跡の径を小さくして、円筒体上端のフランジ部と円板の外周フランジ部とをさらに大きく湾曲させるようにする。 Next, a flange portion is formed at the upper end portion of the cylindrical body, and the outer peripheral flange portion is formed at the entire peripheral end portion of the circular plate by pressing the circular plate serving as the bottom plate.
Then, the outer peripheral flange part of the disc used as the bottom plate is placed on the flange part or the end part at the upper end of the cylindrical body. Further, the curved inner surface of the roll having the curved processing portion is regulated along the radial direction of the cylindrical body with respect to the flange portion of the cylindrical body and the outer peripheral flange portion of the disk while restricting the upward movement of the bottom plate. Press from outside. By gradually moving a roll having a curved processed portion to the center side of the cylindrical body, the diameter of the rotation trajectory is reduced, and the flange portion at the upper end of the cylindrical body and the outer peripheral flange portion of the disc are further curved. Like that.
　上記のような加工を行うことによって、底板となる円板の外周部分には、この外周部分を外側に曲げたカール部が一体形成されており、円筒体上端の開口部の周縁部分には、この周縁部分を外側に向けて折り曲げたフランジ部が一体形成されている。そして、底板のカール部を円筒体のフランジ部に巻き込むようにして相互に重ね合わせた構造体が得られる。
　その後さらに、底板のカール部及び円筒体のフランジ部をさらに重ね合わせ、この重ね合わせた部分をローラ等の押圧手段を使用して外方から圧着することによって、円筒体と底板とを二重巻き締めによって接合できたことになる。
　本発明ではさらに、二重巻き締め部において円筒体及び底板を形作っている板材の端部を、レーザー溶接によって溶融接合する。
　二重巻き締め部を形成して円筒体及び底板を形作っている板材の端部同士の間の隙間は、ほとんどないくらいに密着しているので、レーザー溶接は容易且つ確実に行える。
　以上、巻き締め部については、図２に示す二重巻き締め構造を説明したが、この構造に限定されるものではなく、その他の例として図３（ａ）、（ｂ）に示すような構造であってもよい。いずれについても、基本的には上述と同様の方法で加工できる。 By performing the processing as described above, a curled portion obtained by bending the outer peripheral portion outward is integrally formed on the outer peripheral portion of the disc serving as the bottom plate, and the peripheral portion of the opening at the upper end of the cylindrical body is A flange portion formed by bending the peripheral edge portion outward is integrally formed. And the structure which mutually overlap | superposed the curl part of the baseplate so that it might wind around the flange part of a cylindrical body was obtained.
Thereafter, the curled portion of the bottom plate and the flange portion of the cylindrical body are further overlapped, and the overlapped portion is pressure-bonded from the outside using a pressing means such as a roller, whereby the cylindrical body and the bottom plate are double wound. It can be joined by tightening.
In the present invention, the end portions of the plate material forming the cylindrical body and the bottom plate are further melt-bonded by laser welding in the double winding portion.
Laser welding can be performed easily and reliably because there is almost no gap between the ends of the plate members forming the double-tightened portion to form the cylindrical body and the bottom plate.
As described above, the double tightening structure shown in FIG. 2 has been described for the tightening portion. However, the structure is not limited to this structure, and as shown in FIGS. 3A and 3B as another example. It may be. In any case, the processing can be basically performed by the same method as described above.
　以上のように、円筒体に底板を取り付ける態様について説明した。
　同様に蓋板を取り付ければ密閉容器が製造できるし、深絞り等の手段によって得られた有底の容器の開口端に蓋体を取り付けても密閉容器が製造できる。
　また、胴体は必ずしも円筒体に限ったものではない。円筒体に何らの加工を施して矩形断面の角筒体を胴体として用いてもよい。 As mentioned above, the aspect which attaches a baseplate to a cylindrical body was demonstrated.
Similarly, a sealed container can be manufactured by attaching a lid plate, and a sealed container can also be manufactured by attaching a lid to the open end of a bottomed container obtained by means such as deep drawing.
Further, the body is not necessarily limited to the cylindrical body. A cylindrical body having a rectangular cross section may be used as the body by performing any processing on the cylindrical body.
　上述のような方法で製造された金属製の有底又は密閉容器では、底板、又は底板及び蓋板は、その全周側端部において容器胴体の端部と二重巻き締め接合され、且つその二重巻き締め接合部で、底板、又は底板及び蓋板を構成する板材と、容器胴体を構成する板材とが、溶融接合されている。
　このため、二重巻き締め接合部では複数枚の板材が複数の層状に積層される形態となっており、蓋板或いは底板の外側周辺部の強度が高く、容器としての耐変形能が優れることになる。
　また本発明の金属製の密閉容器を例えば二次電池のケースとして用いれば、膨張・収縮の疲労作用を受けたとしても、疲労作用を受ける箇所が、突合せ溶接部ではなく、底板、又は底板及び蓋板の全周側端部と、容器胴体の端部との二重巻き締め接合・溶接部となるため、耐疲労性にも優れることとなって、二次電池としての耐久性向上に資することになる。 In the metal bottomed or sealed container manufactured by the method as described above, the bottom plate, or the bottom plate and the cover plate are double-wrapped and joined to the end of the container body at the end of the entire circumference, and At the double tightening joint, the plate material constituting the bottom plate or the bottom plate and the cover plate and the plate material constituting the container body are melt-bonded.
For this reason, in the double wrap joint, a plurality of plate materials are laminated in a plurality of layers, the strength of the outer peripheral portion of the lid plate or the bottom plate is high, and the deformation resistance as a container is excellent. become.
In addition, if the metal sealed container of the present invention is used as a case of a secondary battery, for example, even if it is subjected to fatigue action of expansion / contraction, the place that undergoes fatigue action is not a butt weld, but a bottom plate, or bottom plate and Because it is a double-tightened joint / welded part between the end of the cover plate and the end of the container body, it also has excellent fatigue resistance, contributing to improved durability as a secondary battery. It will be.

Claims (8)

  1. 　両端が開放した有限長の金属管よりなる胴体の片端又は両端に、金属製の底板、又は底板及び蓋板が取付けられた金属製の有底又は密閉容器であって、前記底板、又は前記底板及び蓋板の全周側端部と、前記胴体の片端又は両端の端部とが二重巻き締めによって接合されるとともに、当該二重巻き締め部で前記底板、又は前記底板及び蓋板と、前記胴体の片端又は両端の端部とが重ね溶接されている金属製の有底又は密閉容器。 A bottomed or sealed container made of metal with a bottom plate made of metal or a bottom plate and a cover plate attached to one end or both ends of a body made of a finite-length metal tube with both ends open, the bottom plate or the bottom plate And the entire peripheral side end of the lid plate and the end of one end or both ends of the body are joined by double winding, and the bottom plate, or the bottom plate and the lid plate at the double winding portion, A bottomed or sealed container made of metal in which one end or both end portions of the body are overlap-welded.
  2. 　一端が閉じられ且つ他端が開放された有限長の金属製の有底容器の他端開口部に金属製の蓋板が取付けられた金属製の密閉容器であって、前記容器の開放された側の端部と前記蓋板の全周側端部とが二重巻き締めによって接合されるとともに、当該二重巻き締め部で前記蓋板と前記容器の端部とが重ね溶接されている金属製の密閉容器。 A metal sealed container having a metal lid plate attached to the opening of the other end of a finite-length metal bottomed container having one end closed and the other end opened, the container being opened The end portion on the side and the end portion on the entire circumference side of the lid plate are joined by double winding, and the lid plate and the end portion of the container are overlap-welded at the double winding portion Made of airtight container.
  3. 　前記底板及び前記蓋板の少なくとも１つの全周側端部と前記胴体の開放された側の端部との二重巻き締め部では、その重なり合った部分が、前記容器の側面方向からの重ね溶接によって接合されている請求項１又は２に記載の金属製の有底又は密閉容器。 In the double tightening portion of the bottom plate and the end portion on the entire circumference side of the cover plate and the end portion on the open side of the body, the overlapping portion is lap welded from the side surface direction of the container The metal bottomed or airtight container of Claim 1 or 2 joined by these.
  4. 　前記底板及び前記蓋板の少なくとも１つの全周側端部と前記胴体の開放された側の端部との二重巻き締め部では、その重なり合った部分が、前記容器の上方からの重ね溶接によって接合されている請求項１又は２に記載の金属製の有底又は密閉容器。 In the double tightening portion of the bottom plate and the end portion on the entire circumference side of the lid plate and the end portion on the open side of the body, the overlapping portion is formed by lap welding from above the container. The metal bottomed or airtight container of Claim 1 or 2 joined.
  5. 　両端が開放した有限長の金属管よりなる胴体の片端又は両端の端部と、金属製の底板、又は底板及び蓋板の全周側端部とを二重巻き締めによって接合した後、当該二重巻き締め部で前記底板、又は前記底板及び蓋板と、前記胴体の片端又は両端の端部とを重ね溶接する金属製の有底又は密閉容器の製造方法。 After joining one end or both ends of a fuselage consisting of a finite-length metal tube open at both ends to the metal bottom plate, or the entire peripheral side end of the bottom plate and the cover plate by double winding, the two The manufacturing method of the bottomed or airtight container made of metal which welds the said baseplate or the said baseplate and a cover board, and the edge part of the one end or both ends of the said fuselage | stacking by a heavy winding part.
  6. 　一端が閉じられ且つ他端が開放された有限長の金属製の有底容器の他端開口端部と金属製の蓋板の全周側端部とを二重巻き締めによって接合した後、当該二重巻き締め部で前記蓋板と前記容器の開口端部とを重ね溶接する金属製の密閉容器の製造方法。 After joining one end closed end and the other end opening end of the finite-length metal bottomed container and the end of the metal lid on the entire circumference side by double winding, The manufacturing method of the metal airtight container which overlaps and welds the said cover plate and the opening edge part of the said container in a double winding part.
  7. 　前記底板及び前記蓋板の少なくとも１つの全周側端部と前記胴体の開放された側の端部との二重巻き締め部では、その重なり合った部分を、前記容器の側面方向からレーザー溶接によって重ね溶接する請求項５又は６に記載の製造方法。 In the double tightening portion of the end portion on the entire circumference side of at least one of the bottom plate and the lid plate and the end portion on the open side of the body, the overlapping portion is laser-welded from the side surface direction of the container. The manufacturing method according to claim 5 or 6, wherein lap welding is performed.
  8. 　前記底板及び前記蓋板の少なくとも１つの全周側端部と前記胴体の開放された側の端部との二重巻き締め部では、その重なり合った部分を、前記容器の上方からレーザー溶接によって重ね溶接する請求項５又は６に記載の製造方法。 In the double tightening portion of the end portion on the entire circumference of at least one of the bottom plate and the lid plate and the end portion on the open side of the body, the overlapping portion is overlapped by laser welding from above the container. The manufacturing method of Claim 5 or 6 welded.
PCT/JP2012/054307 2012-02-22 2012-02-22 Closed-end or hearmetically sealed metallic container, and method for manufacturing same WO2013124992A1 (en)

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TW101111674A TW201336141A (en) 2012-02-22 2012-04-02 Metal bottomed or sealed container and method of manufacturing the same

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EP3065193A1 (en) * 2015-03-03 2016-09-07 Samsung SDI Co., Ltd. Rechargeable battery having cover
CN112335100A (en) * 2018-06-21 2021-02-05 松下知识产权经营株式会社 Battery with a battery cell
WO2023142969A1 (en) * 2022-01-27 2023-08-03 宁德时代新能源科技股份有限公司 Casing, battery cell, battery and electric device
SE2251579A1 (en) * 2022-08-31 2023-09-18 Northvolt Ab Secondary cell

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US2354921A (en) * 1941-05-31 1944-08-01 Archie W Mcclary Metal drum
JPS63258748A (en) * 1987-03-04 1988-10-26 ベルント　ビューデンベンダー Vessel made of metallic plate
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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3065193A1 (en) * 2015-03-03 2016-09-07 Samsung SDI Co., Ltd. Rechargeable battery having cover
CN105938881A (en) * 2015-03-03 2016-09-14 三星Sdi株式会社 Rechargeable battery having cover
US9799912B2 (en) 2015-03-03 2017-10-24 Samsung Sdi Co., Ltd. Rechargeable battery having cover
CN112335100A (en) * 2018-06-21 2021-02-05 松下知识产权经营株式会社 Battery with a battery cell
CN112335100B (en) * 2018-06-21 2022-08-26 松下知识产权经营株式会社 Battery with a battery cell
WO2023142969A1 (en) * 2022-01-27 2023-08-03 宁德时代新能源科技股份有限公司 Casing, battery cell, battery and electric device
SE2251579A1 (en) * 2022-08-31 2023-09-18 Northvolt Ab Secondary cell
SE2251581A1 (en) * 2022-08-31 2023-09-18 Northvolt Ab A cylindrical secondary cell comprising an enclosure with a reduced radius section, a lid, and a collector plate
SE545612C2 (en) * 2022-08-31 2023-11-14 Northvolt Ab A cylindrical secondary cell comprising an enclosure with a reduced radius section, a lid, and a collector plate
SE546105C2 (en) * 2022-08-31 2024-05-21 Northvolt Ab A cylindrical secondary cell and a manufacturing method

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