WO2017188563A1 - Batterie rechargeable à élément de protection - Google Patents

Batterie rechargeable à élément de protection Download PDF

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Publication number
WO2017188563A1
WO2017188563A1 PCT/KR2017/001164 KR2017001164W WO2017188563A1 WO 2017188563 A1 WO2017188563 A1 WO 2017188563A1 KR 2017001164 W KR2017001164 W KR 2017001164W WO 2017188563 A1 WO2017188563 A1 WO 2017188563A1
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WO
WIPO (PCT)
Prior art keywords
electrode
terminal
protective member
current collecting
secondary battery
Prior art date
Application number
PCT/KR2017/001164
Other languages
English (en)
Korean (ko)
Inventor
권민형
서용철
곽승호
Original Assignee
삼성에스디아이 주식회사
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 삼성에스디아이 주식회사 filed Critical 삼성에스디아이 주식회사
Publication of WO2017188563A1 publication Critical patent/WO2017188563A1/fr

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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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • 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
    • H01M50/172—Arrangements of electric connectors penetrating the casing
    • H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
    • H01M50/176—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for prismatic or rectangular cells
    • 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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • 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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4235—Safety or regulating additives or arrangements in electrodes, separators or electrolyte
    • 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
    • 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
    • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
    • H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
    • 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
    • H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2200/00—Safety devices for primary or secondary 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
    • 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

Definitions

  • the present invention relates to a secondary battery, and more particularly to a secondary battery having a protective member.
  • a rechargeable battery is a battery that can be charged and discharged unlike a primary battery that is not rechargeable.
  • Low-capacity secondary batteries are used in portable electronic devices such as mobile phones, notebook computers, and camcorders, and large-capacity batteries are widely used as power sources for driving motors in hybrid vehicles.
  • the high output secondary battery includes a plurality of secondary batteries in series so as to be used for driving a motor such as an electric vehicle requiring a large power. It consists of a large capacity rechargeable battery.
  • one large-capacity secondary battery is usually made of a plurality of secondary batteries connected in series, the secondary battery may be made of a cylindrical and square.
  • the secondary battery also has an electrode assembly that performs charging and discharging, the electrode assembly including a positive electrode and a negative electrode and a separator interposed between the positive electrode and the negative electrode.
  • the electrode assembly may have a structure in which a plurality of positive electrode plates and a negative electrode plate are stacked, or may have a structure in which a strip-shaped positive electrode and a negative electrode are wound.
  • the electrode assembly is electrically connected to the terminal through the current collecting member, and foreign substances generated during the bonding of the current collecting member with the other members may enter the electrode assembly, and these foreign substances may adversely affect the charging and discharging. .
  • One aspect of the invention provides a secondary battery that can reduce the intrusion of foreign matter.
  • a secondary battery includes a first electrode, an electrode assembly including a second electrode, a case accommodating the electrode assembly, a cap plate coupled to the case, and electrically connected to the first electrode.
  • a first terminal protruding outward from the cap plate, a first current collecting member electrically connecting the first electrode and the first terminal, and a first protective member covering a surface of the first current collecting member toward the electrode assembly;
  • the first protective member may be installed to cover the first joint portion to which the first electrode and the first current collecting member are bonded, and the first protective member may be formed of a gel layer.
  • the first protective member may be made to have a viscosity of 25 to 100cps to 10000cps, the first protective member may be made of a film having an adhesive layer.
  • the first current collecting member may be disposed to face the cap plate, and the first bonding part may be formed by welding the first electrode and the first current collecting member to each other.
  • the secondary battery may further include a second protective member covering a second joint part to which the first terminal and the first current collecting member are joined, and the second protective member may be formed of a gel layer.
  • the second protective member may be formed of a film having an adhesive layer.
  • the first terminal includes a plate-shaped first terminal plate and a first terminal pillar installed through the first terminal plate, and the second joint portion is a portion in which the first terminal pillar and the first contact member are welded. Can be done.
  • the secondary battery has a second terminal electrically connected to the second electrode and protruding outwardly of the cap plate, a second current collecting member electrically connecting the second electrode and the second terminal, the second electrode and the
  • the display device may further include a third protection member covering a third junction where the second current collecting member is bonded, and a fourth protection member covering a fourth junction where the second terminal and the second electrode are bonded.
  • the third protective member or the fourth protective member may be formed of a gel layer, and the third protective member or the fourth protective member may be formed of a film having an adhesive layer.
  • a protection member is installed at the portion where the electrode and the current collector member are joined, foreign substances generated at the time of bonding may be prevented from entering.
  • FIG. 1 is a perspective view illustrating a rechargeable battery according to a first exemplary embodiment of the present invention.
  • FIG. 2 is a cross-sectional view taken along the line -II of FIG. 1.
  • FIG. 3 is an exploded perspective view illustrating a part of a rechargeable battery according to a first exemplary embodiment of the present invention.
  • FIG 4 is a plan view showing a state in which the electrode assembly is bonded to the cap assembly according to the first embodiment of the present invention.
  • FIG. 5 is a perspective view illustrating a state in which a first protective member and a second protective member are installed in the first current collecting member according to the first embodiment of the present invention.
  • FIG. 6 is a perspective view illustrating a state in which a third protective member and a fourth protective member are installed in the second current collecting member according to the first embodiment of the present invention.
  • FIG. 7 is a perspective view illustrating a state in which a first protective member and a second protective member are installed in a first current collecting member according to a second embodiment of the present invention.
  • FIG. 8 is a perspective view illustrating a state in which a third protective member and a fourth protective member are installed in the second current collecting member according to the second embodiment of the present invention.
  • FIG. 1 is a perspective view illustrating a rechargeable battery according to an exemplary embodiment of the present invention
  • FIG. 2 is a cross-sectional view taken along the line -II of FIG. 1.
  • the secondary battery 101 includes a separator 13 between a first electrode (anode) 11 and a second electrode (cathode) 12. And an electrode assembly 10 wound up, a case 28 in which the electrode assembly 10 is embedded, and a cap assembly 30 coupled to an opening of the case 28.
  • Secondary battery 101 according to the present embodiment is described as an example of a rectangular as a lithium ion secondary battery.
  • the present invention is not limited thereto, and the present invention may be applied to various types of batteries such as lithium polymer batteries or cylindrical batteries.
  • the secondary battery 101 according to the present embodiment may be made of a battery for starting a vehicle, in particular as a high output rectangular battery.
  • the case 28 is formed of a substantially rectangular parallelepiped, and an opening is formed in one surface.
  • the case 28 may be made of metal such as aluminum or stainless steel.
  • the cap assembly 30 protrudes out of the cap plate 31 and the cap plate 31 covering the opening of the case 28, and the first terminal 21 and the cap plate electrically connected to the first electrode 11. It includes a second terminal 25 protruding out of the 31 and electrically connected to the second electrode 12.
  • the cap plate 31 is formed in the form of an elongated plate extending in one direction and is coupled to the opening of the case 28.
  • the cap plate 31 is provided with a sealing stopper 38 installed in the electrolyte injection hole 32 and a vent plate 39 formed with a notch 39a so as to be opened at a set pressure.
  • the first terminal 21 and the second terminal 25 are installed to protrude upward of the cap plate 31.
  • the first terminal 21 is electrically connected to the first electrode 11 through the first current collecting member 41, and the second terminal 25 is connected to the second electrode 25 via the second current collecting member 42. 12) and electrically connected.
  • the present invention is not limited thereto, and the first terminal 21 may be electrically connected to the negative electrode, and the second terminal 25 may be electrically connected to the positive electrode.
  • the first terminal 21 includes a first terminal plate 22 having a plate shape and a first terminal pillar 23 installed through the first terminal plate 22.
  • the first terminal plate 22 is disposed in parallel with the cap plate 31 on the cap plate 31 and is electrically connected to the first electrode 11 through the first terminal pillar 23.
  • the first terminal pillar 23 has a rod shape and is installed to penetrate through the first terminal plate 22 and the cap plate 31.
  • the first terminal pillar 23 has a rod-shaped pillar portion 231, a flange portion 232 protruding laterally from the lower portion of the pillar portion 231, and a lower portion protruding downward from the lower surface of the pillar portion 231. And a protrusion 235.
  • the upper end of the first terminal pillar 23 is fixed to the first terminal plate 22 by welding in a state of being fitted to the first terminal plate 22.
  • the lower end of the first terminal pillar 23 is joined to the first current collecting member 41 by welding.
  • the lower protrusion 235 is inserted into the coupling hole 418 formed in the first current collecting member 41, and the lower end of the lower protrusion 235 and the first current collecting member 41 are welded.
  • a sealing gasket 59 for sealing is inserted between the first terminal pillar 23 and the cap plate 31 in a hole through which the first terminal pillar 23 penetrates, and below the cap plate 31.
  • the lower insulating member 43 supporting the current collecting member 41 is installed.
  • the lower portion of the first terminal plate 22 is provided with a connecting member 58 for electrically connecting the first terminal 21 and the cap plate 31. Accordingly, the cap plate 31 and the case 28 are charged with the positive electrode.
  • the second terminal 25 includes a second terminal plate 26 having a plate shape and a second terminal pillar 27 installed through the second terminal plate 26.
  • the second terminal plate 26 is disposed in parallel with the cap plate 31 on the cap plate 31 and is electrically connected to the second electrode 12 via the second terminal pillar 27.
  • the second terminal pillar 27 has a rod shape and is installed to penetrate through the second terminal plate 26 and the cap plate 31.
  • the second terminal pillar 27 has a rod-shaped pillar portion 271 and a flange portion 272 protruding laterally from the lower portion of the pillar portion 271, and a lower portion protruding downward from the lower surface of the pillar portion 271. And projection 275.
  • the upper end of the second terminal pillar 27 is fixed to the second terminal plate 26 by welding in a state of being fitted to the second terminal plate 26.
  • the lower end of the second terminal pillar 27 is joined to the second current collecting member 42 by welding.
  • the lower protrusion 275 is inserted into the coupling hole 428 formed in the second current collecting member 42, and the lower end of the lower protrusion 275 and the second current collecting member 42 are welded.
  • a sealing gasket 55 for sealing is inserted between the second terminal pillar 27 and the cap plate 31 in a hole through which the second terminal pillar 27 penetrates, and a second portion below the cap plate 31 is provided.
  • a lower insulating member 45 supporting the current collector member 42 and insulated from the cap plate 31 is installed.
  • a shorting protrusion 261 protruding toward the shorting hole 37 is formed on the lower surface of the second terminal plate 26.
  • the second terminal 25 is formed to extend in one direction to cover the short-circuit hole 37.
  • An upper insulating member 54 is provided between the second terminal 25 and the cap plate 31 to electrically insulate the second terminal 25 and the cap plate 31.
  • the cap assembly 30 includes a shorting member 56 that shorts the first electrode 11 and the second electrode 12.
  • the shorting member 56 is electrically connected to the cap plate 31. When the internal pressure of the battery 101 rises, the battery 101 deforms and is connected to the second terminal 25.
  • a shorting hole 37 is formed in the cap plate 31, and the shorting member 56 is disposed between the upper insulating member 54 and the cap plate 31 in the shorting hole 37.
  • the second terminal plate 26 is disposed on the short circuit hole 37 to cover the short circuit hole 37.
  • the short circuit member 56 includes a curved portion that is curved in a convex shape downward and an outer edge portion of the curved portion and fixed to the cap plate 31.
  • the internal pressure of the secondary battery increases.
  • the curved portion is deformed so as to be convex upward.
  • the shorting protrusion 261 and the shorting member 56 abut and cause a short circuit.
  • FIG. 3 is an exploded perspective view illustrating a part of a rechargeable battery according to an exemplary embodiment of the present invention.
  • the electrode assembly 10 is disposed between the band-shaped first electrode 11, the second electrode 12, and the first electrode 11 and the second electrode 12. It includes a separator 13, it is made of a wound structure. One or more electrode assemblies 10 may be inserted in the case 28.
  • the first electrode 11 includes a first coating part on which a positive electrode active material layer is formed and a first electrode tab 11a on which a positive electrode active material layer is not formed.
  • the first electrode tab 11a has a structure in which a plurality of first electrode tabs 11a are stacked.
  • the second electrode 12 includes a second coating part on which the positive electrode active material layer is formed and a second electrode tab 12a on which the positive electrode active material layer is not formed.
  • the second electrode tab 12a has a plurality of stacked structures. Is made of.
  • the first electrode tab 11a and the second electrode tab 12a protrude toward the cap plate 31 from the upper end of the electrode assembly 10 and are spaced apart from each other in the width direction of the electrode assembly 10.
  • the first collector member 41 is bent from the support plate 411 bonded to the first terminal pillar 23, the electrode attachment portion 413 and the support plate 411 bonded to the first electrode tab 11a, and formed to be inclined. And a connection part 415 connecting the support plate 411 and the electrode attachment part 413.
  • the support plate 411 is located below the electrode attachment portion 413.
  • the support plate 411 has a rectangular plate shape and is fixed by welding to the lower portion of the first terminal column 23.
  • a coupling hole 418 is formed in the support plate 411, and the first terminal pillar 23 and the support plate are inserted in the state in which the lower protrusion 235 formed below the first terminal pillar 23 is fitted in the coupling hole 418. 411 is welded.
  • a fuse hole 416 is formed in the support plate 411, and a portion in which the fuse hole 416 is formed may have a smaller cross-sectional area than the periphery and may melt when an overcurrent flows.
  • the support plate 411 may be provided with a support member 48 surrounding the fuse hole 416.
  • the electrode attachment portion 413 may be formed of a square plate, and a ventilation hole 419 may be formed in the electrode attachment portion 413.
  • the first attachment parts 81 and 82 to which the first electrode tab 11a is welded, are formed in the electrode attachment part 413, and the first plate 21 is formed in the support plate 411.
  • a second joining portion 83 having a lower end joined by welding is formed.
  • the first junctions 81 and 82 may be formed by ultrasonic welding of the first electrode tab 11a and the electrode attachment part 413 and may have a substantially rectangular cross section.
  • a first protective member 61 covering the first junctions 81 and 82 may be installed at the first junctions 81 and 82. The first protective member 61 is installed to cover the bottom surface of the first current collecting member 41 toward the electrode assembly 10.
  • the first protective member 61 covers the first joints 81 and 82 as a whole and extends to the first current collecting member 41 to cover a part of the first current collecting member 41.
  • the first protective member 61 is made of a gel layer.
  • the first protective member 61 is applied to the first bonding parts 81 and 82 and may be made of a transparent material.
  • the first protective member 61 maintains a gel state by dispersing dispersed phase particles in a dispersion medium to form secondary bonds of the dispersed phase particles.
  • the material of the colloid and the dispersion medium, which are dispersed phase particles, is not limited and various materials may be applied.
  • the second junction part 83 may be formed by laser welding of the support plate 411 and the first terminal 21, and may have a substantially annular cross section.
  • a second protective member 62 may be installed on the second junction 83 to cover the second junction 83.
  • the second protective member 62 covers the second joint portion 83 as a whole and extends to the first current collecting member 41 to cover a portion of the first current collecting member 41.
  • the second protective member 62 is made of a gel layer.
  • the second protective member 62 is applied to the second bonding portion 83 and may be made of a transparent material.
  • the second protective member 62 maintains the gel state by dispersing the dispersed phase particles in the dispersion medium to form secondary bonds of the dispersed phase particles.
  • the second current collecting member 42 is attached to the support plate 421 bonded to the second terminal pillar 27 and the electrode plate 10 bent toward the electrode assembly 10 from the support plate 421 and directly bonded to the second electrode tab 12a.
  • Part 423 is included.
  • the electrode attachment portion 423 is bent to be parallel to the electrode assembly 10 at the widthwise end of the support plate 421.
  • the support plate 421 has a rectangular plate shape and is fixed by welding to the lower portion of the second terminal column 27.
  • a coupling hole 428 is formed in the supporting plate 421, and the second terminal pillar 27 and the supporting plate are inserted in the state in which the lower protrusion 275 formed below the second terminal pillar 27 is fitted in the coupling hole 428. 421 is welded.
  • the third attachment parts 85 and 86 to which the second electrode tab 12a is welded, are formed in the electrode attachment part 423, and the second terminal 25 is formed in the support plate 421.
  • the fourth joint portion 87 joined by welding is formed.
  • the third junction portions 85 and 86 may be formed by ultrasonic welding of the second electrode tab 12a and the electrode attachment portion 423, and may have a substantially rectangular cross section.
  • Third protection members 63 may be installed on the third junctions 85 and 86 to cover the third junctions 85 and 86.
  • the third protective member 63 covers the third joint portions 85 and 86 as a whole and extends to the second current collecting member 42 to cover a portion of the second current collecting member 42.
  • the third protective member 63 is made of a gel layer.
  • the third protective member 63 may be applied to the third junctions 85 and 86 and made of a transparent material.
  • the third protective member 63 maintains a gel state by dispersing dispersed phase particles in a dispersion medium to form secondary bonds of the dispersed phase particles.
  • the fourth junction part 87 may be formed by laser welding of the support plate 421 and the second terminal 25, and may have a substantially annular cross section.
  • a fourth protective member 64 covering the fourth junction 87 may be installed in the fourth junction 87.
  • the fourth protective member 64 is installed to cover the fourth joint part 87 as a whole and extend to the second current collecting member 42 to cover a part of the second current collecting member 42.
  • the fourth protective member 64 is made of a gel layer.
  • the fourth protective member 64 is applied to the fourth joint portion 87 and may be made of a transparent material.
  • the fourth protective member 64 maintains a gel state by dispersing dispersed phase particles in a dispersion medium to form secondary bonds of the dispersed phase particles.
  • the first protective member 61, the second protective member 62, the third protective member 63 and the fourth protective member 64 may be made of a resin, the thickness may be made of 0.1mm to 0.9mm and preferably It may be made up to 0.5mm or less.
  • the first protective member 61, the second protective member 62, the third protective member 63 and the fourth protective member 64 may be made to have a viscosity of 25 to 100cps to 10,000cps.
  • Metal particles may be attached to the joint by welding. When the metal particles are mixed with the electrolyte or penetrated into the electrode assembly 10, the metal particles may adversely affect charging and discharging, thereby reducing the life of the battery or causing an abnormal reaction.
  • applying the protective member in the gel state as in the present embodiment can prevent foreign matter from invading.
  • the protective members are made of a gel state, it is possible to prevent the protective member from falling off due to vibration or shock applied from the outside.
  • FIG. 7 is a perspective view illustrating a state in which a first protective member and a second protective member are installed in a first current collecting member according to a second embodiment of the present invention
  • FIG. 8 is a second current collecting unit according to a second embodiment of the present invention. It is a perspective view which shows the state in which the 3rd protective member and the 4th protective member were installed in the member.
  • the rechargeable battery according to the second exemplary embodiment has the same structure as the rechargeable battery according to the first exemplary embodiment except for the protection member, redundant description of the same structure will be omitted.
  • first electrode portions 81 and 82 to which the first electrode tab 11a is welded, are formed in the electrode attachment portion 413, and the first terminal 21 is formed in the support plate 411.
  • the second joint portion 83 joined by welding is formed.
  • the first junctions 81 and 82 may be formed by ultrasonic welding of the first electrode tab 11a and the electrode attachment part 413 and may have a substantially rectangular cross section.
  • First protective members 91 may be installed at the first junctions 81 and 82 to cover the first junctions 81 and 82.
  • the first protective member 91 covers the first joints 81 and 82 as a whole and extends to the first current collecting member 41 to cover a part of the first current collecting member 41.
  • the first protective member 91 may be formed of a film having an adhesive layer.
  • the first protective member 91 is attached to the first bonding portion and may be made of synthetic resin.
  • the second junction part 83 may be formed by laser welding of the support plate 411 and the first terminal 21, and may have a substantially annular cross section.
  • a second protective member 92 covering the second junction 83 may be installed in the second junction 83.
  • the second protective member 92 covers the second joint portion 83 as a whole and extends to the first current collecting member 41 to cover a portion of the first current collecting member 41.
  • the second protective member 92 may be formed of a film having an adhesive layer.
  • the second protective member 92 is attached to the second bonding portion 83 and may be made of synthetic resin.
  • third joining portions 85 and 86 formed by welding the second electrode tab 12a to the electrode attachment portion 423 are formed on the electrode attachment portion 423, and the second terminal 25 is formed on the support plate 421.
  • the fourth joint part 87 joined by welding is formed.
  • the third junction portions 85 and 86 may be formed by ultrasonic welding of the second electrode tab 12a and the electrode attachment portion 423, and may have a substantially rectangular cross section.
  • a third protective member 93 covering the third junctions 85 and 86 may be installed in the third junctions 85 and 86.
  • the third protective member 93 covers the third joints 85 and 86 as a whole and extends to the second current collecting member 42 to cover a part of the second current collecting member 42.
  • the third protective member 93 may be formed of a film having an adhesive layer.
  • the third protection member 93 may be attached to the third joint portions 85 and 86 and made of synthetic resin.
  • the fourth junction part 87 may be formed by laser welding of the support plate 421 and the second terminal 25, and may have a substantially annular cross section.
  • a fourth protective member 94 covering the fourth junction 87 may be installed in the fourth junction 87.
  • the fourth protective member 94 covers the fourth joint portion 87 as a whole and extends to the second current collecting member 42 to cover a portion of the second current collecting member 42.
  • the fourth protective member 94 may be formed of a film having an adhesive layer.
  • the fourth protective member 94 is attached to the fourth joint portion 87 and may be made of synthetic resin.
  • first terminal plate 23 first terminal pillar
  • cap plate 41 first collecting member
  • connection portion 416 fuse hole
  • first junction 83 second junction

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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)

Abstract

La présente invention concerne une batterie rechargeable pouvant réduire l'infiltration de substances étrangères. La batterie rechargeable selon un aspect de la présente invention comprend : un ensemble à électrodes comprenant une première électrode et une seconde électrode ; un boîtier logeant l'ensemble à électrodes ; une plaque de couvercle accouplée au boîtier ; une première borne connectée électriquement à la première électrode et faisant saillie à l'extérieur de la plaque de couvercle ; un premier élément collecteur de courant connectant électriquement la première électrode et la première borne ; et un premier élément de protection recouvrant la surface du premier élément collecteur de courant orientée vers l'ensemble à électrodes.
PCT/KR2017/001164 2016-04-26 2017-02-03 Batterie rechargeable à élément de protection WO2017188563A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020160050980A KR102588638B1 (ko) 2016-04-26 2016-04-26 보호부재를 갖는 이차 전지
KR10-2016-0050980 2016-04-26

Publications (1)

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WO2017188563A1 true WO2017188563A1 (fr) 2017-11-02

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KR (1) KR102588638B1 (fr)
WO (1) WO2017188563A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115064847A (zh) * 2022-08-05 2022-09-16 江苏时代新能源科技有限公司 转接构件、电池单体、电池以及用电装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200102177A (ko) * 2019-02-21 2020-08-31 삼성에스디아이 주식회사 이차 전지 및 그의 제조 방법

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