[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

WO2018048160A1 - Secondary battery - Google Patents

Secondary battery Download PDF

Info

Publication number
WO2018048160A1
WO2018048160A1 PCT/KR2017/009661 KR2017009661W WO2018048160A1 WO 2018048160 A1 WO2018048160 A1 WO 2018048160A1 KR 2017009661 W KR2017009661 W KR 2017009661W WO 2018048160 A1 WO2018048160 A1 WO 2018048160A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminal
electrode
cap plate
spinning
gasket
Prior art date
Application number
PCT/KR2017/009661
Other languages
French (fr)
Korean (ko)
Inventor
백윤기
김진
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 WO2018048160A1 publication Critical patent/WO2018048160A1/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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
    • 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
    • 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
    • H01M50/562—Terminals characterised by the material
    • 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 secondary battery.
  • a secondary battery is a battery that can be charged and discharged unlike a primary battery that is not rechargeable. Secondary batteries are widely used in portable electronic devices such as mobile phones, laptops, and camcorders, or widely used as power sources for driving motors of hybrid vehicles.
  • the secondary battery includes an electrode assembly including a positive electrode and a negative electrode, and a separator interposed therebetween.
  • the electrode assembly is accommodated in the case to perform charging and discharging, and the case is connected to a cap assembly having a terminal or a lead tab to supply or receive current.
  • the case may be made of a metal plate or pouch.
  • the plurality of secondary batteries may be electrically connected to each other through a bus bar to form a battery pack, and may be used in a hybrid vehicle requiring a large capacity. When the vehicle is driven or a collision occurs, a shock load is transmitted to the battery pack, and some of the plurality of secondary batteries may be disconnected and electrically separated.
  • One aspect of the present invention is to provide a secondary battery that can prevent the rotation of the electrode terminal.
  • a secondary battery includes an electrode assembly including a separator interposed between a first electrode and a second electrode, a case accommodating the electrode assembly, and a cap connected to seal an opening of the case.
  • a first electrode terminal and a second electrode having a plate, a protruding portion electrically connected to the first electrode through the terminal hole formed in the cap plate, and a first spinning terminal protruding from an upper surface of the cap plate and formed in a circular shape;
  • a second electrode terminal is electrically connected to each other.
  • a gasket is interposed between the first spinning terminal and the cap plate, and a first adhesive layer is formed between the gasket and the cap plate.
  • a second adhesive layer may be formed between the first spinning terminal and the gasket.
  • the cap plate may have a recessed groove portion surrounding the terminal hole outside the terminal hole, and the gasket may include a fitting portion protruding toward the groove portion and fitted into the groove portion.
  • the first spinning terminal may include a protrusion protruding toward the gasket, and the protrusion may be connected to an insertion portion formed in the fitting portion.
  • a plurality of protrusions may protrude from the first spinning terminal, and a plurality of inserts corresponding to the plurality of protrusions may be formed in the fitting portion to be connected to each other.
  • the second electrode terminal may include a terminal portion protruding from the upper surface of the cap plate and formed in a circular shape, and an electrode connection portion protruding from the terminal portion on the cap plate and electrically connected to the second electrode.
  • the terminal portion and the electrode connection portion may be integrally formed on the cap plate.
  • the first electrode terminal may include a second spinning terminal mounted on the first spinning terminal and having a material different from that of the first spinning terminal.
  • the gasket may be configured to insulate the top insulator and the protrusion from the cap plate to insulate the first spinning terminal from the upper surface of the cap plate, and to be inserted into the terminal hole to the lower surface of the cap plate. It may include a seal gasket to insulate the first current collector of the electrode.
  • a third adhesive layer thicker than the first adhesive layer may be formed between the top insulator and the cap plate.
  • a fourth adhesive layer may be formed between the protrusion and the terminal hole.
  • the secondary battery according to an embodiment of the present invention can prevent rotation of the electrode terminal when an external impact or a cyclic load is applied. Accordingly, the electrical connection with the bus bar connected to the electrode terminal can be prevented.
  • FIG. 1 is a perspective view of a rechargeable battery according to an exemplary embodiment of the present invention.
  • FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 1.
  • FIG. 3 is a cross-sectional view taken along line III-III of FIG. 1.
  • FIG. 4 is an enlarged view illustrating an enlarged connection relationship between a first electrode terminal and a cap plate portion illustrated in FIG. 2.
  • FIG. 5 is an enlarged view illustrating an enlarged connection relationship between a first electrode terminal and a cap plate portion illustrated in FIG. 2.
  • FIG. 6 is an enlarged view illustrating an enlarged connection relationship between a first electrode terminal and a cap plate portion illustrated in FIG. 2.
  • FIG. 7 is an enlarged view illustrating an enlarged connection relationship between a first electrode terminal and a cap plate portion illustrated in FIG. 2.
  • FIG. 8 is an enlarged view illustrating an enlarged connection relation between a first electrode terminal and a cap plate portion illustrated in FIG. 2.
  • 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 a line II-II of FIG. 1
  • FIG. 3 is a cross-sectional view taken along a line III-III of FIG. 1. to be.
  • Secondary batteries according to an embodiment of the present invention may be used as a driving power source of a hybrid vehicle by connecting a plurality of them in parallel or in series with each other.
  • each electrode terminal of the plurality of secondary batteries may be connected to a bus bar.
  • a secondary battery will be described with reference to the drawings.
  • the secondary battery 100 is coupled to an electrode assembly 10 for charging and discharging a current, a case 20 containing an electrode assembly 10 and an electrolyte, and an opening of the case 20.
  • the cap plate 35 may include a first electrode terminal 31 and a second electrode terminal 32 installed on the cap plate 35.
  • the electrode assembly 10 may include a first electrode 11, a second electrode 12, and a separator 13.
  • the 1st electrode 11 and the 2nd electrode 12 are arrange
  • the electrode assembly 10 may be formed by rolling in a roll state.
  • the first electrode 11 may be, for example, a cathode.
  • the first electrode 11 may include a coating unit in which an active material is coated on a current collector of a thin metal plate, and a first electrode tab 11a connected to the current collector.
  • the second electrode 12 may be, for example, an anode. Like the first electrode 11, the second electrode 12 may include a coating part and a second electrode tab 12a.
  • the first electrode 11 is a cathode.
  • the second electrode 12 will be described taking as an example an anode.
  • the current collector of the first electrode 11 may be formed of a thin copper plate, and the current collector of the second electrode 12 may be formed of an aluminum thin plate.
  • the first electrode tab 11a and the second electrode tab 12a may be electrically connected to current collectors of the first electrode 11 and the second electrode 12, respectively. When the first electrode 11 and the second electrode 12 are wound, they may be connected to the current collector so as to be drawn out from the center of the electrode assembly 10. For example, the first electrode tab 11a is connected at the beginning of the winding of the first electrode 11, and the second electrode tab 12a is spaced apart from the first electrode 11 at the second electrode 12. Can be connected. As another example, a plurality of first electrode tabs 11a and second electrode tabs 12a may be formed.
  • the case 20 accommodates the electrode assembly 10 and the electrolyte, and may have a rectangular parallelepiped shape.
  • the case 20 may form an opening on one side of the rectangular parallelepiped, and the electrode assembly 10 may be inserted into the internal space from the outside of the case 20.
  • the cap plate 35 is installed in the opening of the case 20 to seal the case 20.
  • the case 20 and the cap plate 35 may be formed of aluminum and welded to each other.
  • the cap plate 35 may have one or more openings. For example, a terminal hole 35b and a vent hole 24 to which the first electrode terminal 31 is connected may be provided.
  • the vent hole 37 is sealed with a vent plate 37a to discharge the internal gas and the internal pressure generated by the charging and discharging of the secondary battery 100. When the internal pressure of the secondary battery 100 reaches the set pressure, the vent plate 37a is cut to open the vent hole 37.
  • the vent plate 37a has a notch 37b for inducing an incision.
  • the first electrode terminal 31 may include a first spinning terminal 31a protruding from an upper surface of the cap plate 35 and a protrusion 31b extending from the first spinning terminal.
  • the first electrode terminal 31 may be formed in a circular shape.
  • the protrusion 31b is inserted into the terminal hole 35b to penetrate through the cap plate 35 to electrically connect the first electrode tab 11a and the first lead tab 41 of the electrode assembly 10. Can be connected.
  • the first spinning terminal 31a is positioned on the upper surface of the cap plate 35 and may be formed in a circular shape.
  • the protrusion 31b may be coupled to the first lead tab 41 through a spinning process.
  • the first electrode terminal 31 may be connected to the punch of the spinning device, and may be connected to the cap plate 35 while being rotated while being inserted into the through hole formed in the cap plate 35.
  • the punch may be coated with a plasma or titanium coating on the punch surface to prevent the first electrode terminal 31 from being attached to the punch.
  • the first spinning terminal 31a and the protrusion 31b may be integrally formed and may be formed of a single metal.
  • the first electrode 11 is a cathode
  • the current collector is made of a thin copper plate
  • the first spinning terminal 31a and the protrusion 31b may be formed of copper, respectively.
  • a bus bar may be connected to the first electrode terminal 31. Therefore, the second spinning terminal 31c having the same material as the bus bar may be connected to the upper portion of the first spinning terminal 31a to improve the coupling force with the bus bar.
  • the bus bar is generally made of aluminum
  • the second spitting terminal 31c may be made of aluminum.
  • the first lead tab 41 electrically connects the protrusion 31b of the first electrode terminal 31 and the first electrode tab 11a. Since the current collector of the first electrode 11 is formed of a thin copper plate, the first lead tab 41 may be formed of copper.
  • the protruding portion 31b is formed integrally with the lower portion of the first spinning terminal 31a to extend, is inserted into the first lead tab 41 through the terminal hole 35b, and the first lead tab 41 through a spinning process. ) Can be connected.
  • the gasket 50 is interposed between the first spinning terminal 31 a and the cap plate 35.
  • the gasket 50 insulates the first spinning terminal 31a from the cap plate 35.
  • the first spinning terminal 31a is installed outside the cap plate 35 with the gasket 50 interposed therebetween.
  • the gasket 50 is installed between the protrusion 31b of the first electrode terminal 31 and the inner surface of the terminal hole 35b of the cap plate 35 to seal between the protrusion 31b and the cap plate 35 and electrically. Can be insulated.
  • the gasket 50 may be further extended between the first lead tab 41 and the inner surface of the cap plate 35 to further electrically insulate the first lead tab 41 from the cap plate 35.
  • the second electrode terminal 32 may include a terminal portion 32a formed in a circular shape and an electrode connection portion 32b protruding in a direction opposite to the terminal portion 32a.
  • the electrode connector 32b may be electrically connected to the second electrode 12 of the electrode assembly 10.
  • the bus bar may be connected to the terminal portion 32a. That is, the second electrode 12 may be charged to the cap plate 35 and the case 20.
  • the terminal portion 32a may be formed in the same circular shape as the first spinning terminal 31a of the first electrode terminal 31.
  • the electrode connector 32b may be connected to the second electrode tab 12a and the second lead tab 42 by a rectangular cross section.
  • the terminal portion 32a and the electrode connecting portion 32b may be integrally formed on the cap plate 35 by pressing the cap plate 35 with a press.
  • FIG. 4 is an enlarged view illustrating an enlarged connection relationship between a first electrode terminal and a cap plate portion illustrated in FIG. 2.
  • the first electrode terminal 31 may include a first spinning terminal 31a and a protrusion 31b extending below the first spinning terminal 31a.
  • the protrusion 31b may be electrically connected to the first electrode 11 through the first lead tab 41, and the protrusion 31b and the first lead tab 41 may be connected through a spinning process. As another example, the protrusion 31b may be inserted into the first lead tab 41.
  • the gasket 50 may be interposed between the first electrode terminal 31 and the cap plate 35. That is, the gasket 50 may be positioned on the surface of the first spinning terminal 31a that contacts the cap plate 35. In addition, the gasket 50 may extend along the protrusion part 31b to the inner surface of the cap plate 35. Through this, the first electrode terminal 31 may be electrically insulated from the cap plate 35.
  • the first adhesive layer 61 may be formed between the gasket 50 and the cap plate 35. As a result, it is possible to prevent the first spinning terminal 31a from rotating by the repetitive load.
  • a second adhesive layer 62 may be formed between the first spinning terminal 31a and the gasket 50.
  • the first adhesive layer 61 and the second adhesive layer 62 may be acrylic adhesives or silicone adhesives.
  • the effect of increasing the resistance to the torque of the first electrode terminal 31 increase the durability of the repeating torque of the first electrode terminal, prevent the lifting of the bus bar and maintain the bonding force to maintain the compression of the gasket. There is. In addition, it may serve as a fixing during the spinning process of the protrusion.
  • FIG. 5 is an enlarged view illustrating an enlarged connection relationship between a first electrode terminal and a cap plate portion illustrated in FIG. 2.
  • the cap plate 35 may have a recess 35a recessed around the terminal hole 35b.
  • the groove portion 35a may be formed flat in the middle.
  • the present invention is not limited thereto, and the center may be rounded and may be recessed.
  • the gasket 50 may have a fitting portion 50a fitted into the groove portion 35a.
  • the fitting portion 50a of the gasket 50 may be fitted into the groove portion 35a formed in the cap plate 35 to be more firmly connected to the cap plate 35.
  • Insertion portion 50b may be formed in the fitting portion 50a.
  • one inserting portion 50b may be formed in the center of the fitting portion 50a, and a plurality of inserting portions 50b may be formed.
  • the first spinning terminal 31a may include a protrusion 31d inserted into the insertion portion 50b of the gasket 50.
  • the protrusion part 31d may be formed according to the number of the inserting parts 50b, and the number of the inserting part 50b and the protrusion part 31d may be formed in plural numbers. Through this, the first spinning terminal 31a and the gasket 50 can be more stably connected.
  • the first adhesive layer 61 may be formed between the groove portion 35a of the cap plate 35 and the fitting portion 50a of the gasket 50.
  • the second adhesive layer 62 is formed between the first spinning terminal 31a and the gasket 50, and is formed between the inserting portion 50b and the protrusion 31d to more strongly connect the two. This can prevent the first spinning terminal 31a from rotating.
  • FIG. 6 is an enlarged view illustrating an enlarged connection relationship between a first electrode terminal and a cap plate portion illustrated in FIG. 2.
  • the gasket 50 may include a top insulator 54 and a seal gasket 52.
  • the top insulator 54 is positioned between the first spinning terminal 31a and the cap plate 35 to insulate the top surface of the cap plate 35 from the first spinning terminal 31a.
  • the seal gasket 52 is fitted into the terminal hole 35b of the cap plate 35 and extends to the lower surface of the cap plate 35 to insulate the lower surface of the cap plate 35 from the first lead tab 41. have.
  • the seal gasket 52 may insulate the protrusion 31b from the cap plate 35 and seal the protrusion 31b between the terminal hole 35b.
  • the seal gasket 52 may extend from the top surface of the cap plate 35 by the thickness of the top insulator 54.
  • the first adhesive layer 61 may be formed between the top insulator 54 and the cap plate 35, and the second adhesive layer 62 may be formed between the first spinning terminal 31a and the top insulator 54. In this case, the assembly process may be improved when the first electrode terminal 31 is connected to the cap plate 35.
  • a seal gasket inside the first electrode terminal 31 may be used. 52 seals between the terminal hole 35b and the protruding portion 31b, so that leakage of the electrolyte solution and the like can be prevented.
  • FIG. 7 is an enlarged view illustrating an enlarged connection relationship between a first electrode terminal and a cap plate portion illustrated in FIG. 2.
  • a third adhesive layer 63 is formed between the first spinning terminal 31a of the first electrode terminal 31 and the cap plate 35, and the protrusion 31b of the first electrode terminal 31 is formed.
  • a fourth adhesive layer 64 may be formed between the cap plate 35.
  • the third adhesive layer 63 may be thickly formed to insulate the cap plate 35 from the first spinning terminal 31a. Therefore, the third adhesive layer 63 may be formed thicker than the first adhesive layer 61.
  • the cap plate 35 may have a groove 35a formed around the terminal hole 35b, and an uneven structure may be formed in the groove 35a to be connected to the protrusion 31d formed in the first spinning terminal 31a. .
  • the fourth adhesive layer 64 may be formed between the protrusion part 31b and the terminal hole 35b.
  • the third adhesive layer 63 and the fourth adhesive layer 64 may be an acrylic adhesive or a silicone adhesive.
  • the first electrode terminal 31 can flow elastically. That is, even when the first electrode terminal 31 is rotated by the repeated load, the first electrode terminal 31 can be returned to its original position by the elastic force generated by the fourth adhesive layer 64. Therefore, the durability of the first electrode terminal 31 which can flow elastically by cyclic load can be increased.
  • FIG. 8 is an enlarged view illustrating an enlarged connection relation between a first electrode terminal and a cap plate portion illustrated in FIG. 2.
  • a fourth adhesive layer 64 is formed between the terminal hole 35b and the protrusion 31b, and a gasket 50 is interposed between the first spinning terminal 31a and the cap plate 35.
  • a gasket 50 is interposed between the first spinning terminal 31a and the cap plate 35.
  • a groove may be formed around the protrusion 31b in the first spinning terminal 31a so that the fourth adhesive layer 64 can be formed longer. As described above, an elastic flow of the first electrode terminal 31 can be expected through the fourth adhesive layer 64, and the terminal hole 35b and the protrusion 31b may be sealed.
  • a groove 35a is formed in the cap plate 35, and a fitting portion 50a of the gasket 50 is connected to the groove 35a.
  • the groove portion 35a is formed in an uneven structure to improve the mutual coupling force, and the fitting portion 50a may be connected to be fitted corresponding to the uneven structure.
  • the protrusion part 31d of the first spinning terminal 31a may be connected to the fitting part 50a.
  • first electrode 12 second electrode
  • cap assembly 31 first electrode terminal
  • vent hole 37a vent plate
  • first adhesive layer 62 second adhesive layer

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)

Abstract

A secondary battery according to one embodiment of the present invention comprises: an electrode assembly formed to include a separator interposed between a first electrode and a second electrode; a case for accommodating the electrode assembly; a cap plate connected while sealing the opening of the case; a first electrode terminal having a protrusion part, which is electrically connected to the first electrode by penetrating through a terminal hole formed in the cap plate, and a first spinning terminal protruding from the upper surface of the cap plate and formed in a circular shape; and a second electrode terminal electrically connected to the second electrode, wherein a gasket is interposed between the first spinning terminal and the cap plate, and a first adhesive layer is formed between the gasket and the cap plate.

Description

이차전지Secondary battery
본 발명은 이차전지에 관한 것이다.The present invention relates to a secondary battery.
이차전지는 충전이 불가능한 일차전지와는 달리 충전 및 방전이 가능한 전지이다. 이차전지는 휴대폰이나 노트북 및 캠코더와 같이 휴대 가능한 소형 전자기기에 사용되거나 하이브리드 자동차 등의 모터 구동용 전원으로 널리 사용되고 있다. A secondary battery is a battery that can be charged and discharged unlike a primary battery that is not rechargeable. Secondary batteries are widely used in portable electronic devices such as mobile phones, laptops, and camcorders, or widely used as power sources for driving motors of hybrid vehicles.
이차전지는 양극과 음극 및 그 사이에 개재된 세퍼레이터를 포함하는 전극조립체를 구비한다. 전극조립체는 케이스 내부에 수용되어 충전과 방전을 수행하며, 케이스에는 단자 또는 리드탭이 구비된 캡조립체가 연결되어 전류를 공급하거나 공급받는다. 케이스는 금속판 또는 파우치로 이루어질 수 있다. The secondary battery includes an electrode assembly including a positive electrode and a negative electrode, and a separator interposed therebetween. The electrode assembly is accommodated in the case to perform charging and discharging, and the case is connected to a cap assembly having a terminal or a lead tab to supply or receive current. The case may be made of a metal plate or pouch.
복수개의 이차전지는 버스바 등을 통해 서로 전기적으로 연결되어 배터리팩을 이룰 수 있으며, 대용량이 필요한 하이브리드 자동차 등에 이용될 수 있다. 자동차의 주행시 또는 자동차의 충돌이 발생되면, 배터리팩에 충격하중이 전달되고, 복수개의 이차전지 중 일부가 연결이 끊어져 전기적으로 이탈될 수 있다. The plurality of secondary batteries may be electrically connected to each other through a bus bar to form a battery pack, and may be used in a hybrid vehicle requiring a large capacity. When the vehicle is driven or a collision occurs, a shock load is transmitted to the battery pack, and some of the plurality of secondary batteries may be disconnected and electrically separated.
최근 배터리팩에 설치되는 이차전지의 캡조립체 공정 변경과 부품 삭제가 이루어지면서, 반복 하중에 의해 전극단자가 회전하게 되어 전극단자와 버스바 사이에 전기적인 연결이 끊어지는 문제가 많이 발생된다.Recently, as the cap assembly process of the secondary battery installed in the battery pack is changed and the parts are deleted, the electrode terminal rotates due to the repeated load, thereby causing a lot of problems of disconnecting the electrical connection between the electrode terminal and the bus bar.
본 발명의 일 측면은 전극단자의 회전을 방지할 수 있는 이차전지를 제공하고자 한다.One aspect of the present invention is to provide a secondary battery that can prevent the rotation of the electrode terminal.
본 발명의 일 실시예에 따른 이차전지는, 제1 전극 및 제2 전극 사이에 개재되는 세퍼레이터를 포함하여 형성되는 전극조립체, 상기 전극조립체를 수용하는 케이스, 상기 케이스의 개구를 밀폐하며 연결되는 캡플레이트, 상기 캡플레이트에 형성된 단자홀을 관통하여 상기 제1 전극과 전기적으로 연결되는 돌출부와 상기 캡플레이트 상면에서 돌출되며 원형으로 형성되는 제1 스피닝터미널을 가지는 제1 전극단자 및 상기 제2 전극과 전기적으로 연결되는 제2 전극단자를 포함하고, 상기 제1 스피닝터미널과 상기 캡플레이트 사이에는 가스켓이 개재되고, 상기 가스켓과 상기 캡플레이트 사이에는 제1 접착층이 형성된다.According to an embodiment of the present invention, a secondary battery includes an electrode assembly including a separator interposed between a first electrode and a second electrode, a case accommodating the electrode assembly, and a cap connected to seal an opening of the case. A first electrode terminal and a second electrode having a plate, a protruding portion electrically connected to the first electrode through the terminal hole formed in the cap plate, and a first spinning terminal protruding from an upper surface of the cap plate and formed in a circular shape; A second electrode terminal is electrically connected to each other. A gasket is interposed between the first spinning terminal and the cap plate, and a first adhesive layer is formed between the gasket and the cap plate.
상기 제1 스피닝터미널과 상기 가스켓 사이에는 제2 접착층이 형성될 수 있다.A second adhesive layer may be formed between the first spinning terminal and the gasket.
상기 캡플레이트에는 상기 단자홀 외측에서 상기 단자홀을 감싸는 우묵한 홈부가 형성되고, 상기 가스켓은 상기 홈부를 향해 돌출되며, 상기 홈부에 끼워지는 끼움부를 포함할 수 있다.The cap plate may have a recessed groove portion surrounding the terminal hole outside the terminal hole, and the gasket may include a fitting portion protruding toward the groove portion and fitted into the groove portion.
상기 제1 스피닝터미널은, 상기 가스켓을 향해 돌출되는 돌기부를 포함하고, 상기 돌기부는 상기 끼움부에 형성된 삽입부에 끼워져 연결될 수 있다.The first spinning terminal may include a protrusion protruding toward the gasket, and the protrusion may be connected to an insertion portion formed in the fitting portion.
상기 제1 스피닝터미널에는 복수개의 돌기부가 돌출되고, 상기 끼움부에는 상기 복수개의 돌기부에 대응하는 복수개의 삽입부가 형성되어 상호 끼움 연결될 수 있다.A plurality of protrusions may protrude from the first spinning terminal, and a plurality of inserts corresponding to the plurality of protrusions may be formed in the fitting portion to be connected to each other.
상기 제2 전극단자는, 상기 캡플레이트 상면으로부터 돌출되고 원형으로 형성된 터미널부 및 상기 캡플레이트에서 상기 터미널부와 반대로 돌출되고, 상기 제2 전극과 전기적으로 연결되는 전극연결부를 포함할 수 있다.The second electrode terminal may include a terminal portion protruding from the upper surface of the cap plate and formed in a circular shape, and an electrode connection portion protruding from the terminal portion on the cap plate and electrically connected to the second electrode.
상기 터미널부와 상기 전극연결부는, 상기 캡플레이트에 일체로 형성될 수 있다.The terminal portion and the electrode connection portion may be integrally formed on the cap plate.
상기 제1 전극단자는, 상기 제1 스피닝터미널에 안착되고, 상기 제1 스피닝터미널과 재질이 다르게 형성되는 제2 스피팅터미널을 포함할 수 있다.The first electrode terminal may include a second spinning terminal mounted on the first spinning terminal and having a material different from that of the first spinning terminal.
상기 가스켓은, 상기 제1 스피닝터미널을 상기 캡플레이트 상면과 절연시키는 탑인슐레이터 및 상기 돌출부를 상기 캡플레이트로부터 절연시키고, 상기 단자홀에 끼워져 상기 캡플레이트 하면으로 이어져, 상기 캡플레이트 하면과 상기 제1 전극의 제1 집전부를 절연시키는 실가스켓을 포함할 수 있다.The gasket may be configured to insulate the top insulator and the protrusion from the cap plate to insulate the first spinning terminal from the upper surface of the cap plate, and to be inserted into the terminal hole to the lower surface of the cap plate. It may include a seal gasket to insulate the first current collector of the electrode.
상기 탑인슐레이터와 상기 캡플레이트 사이에는 상기 제1 접착층 보다 두꺼운 제3 접착층이 형성될 수 있다.A third adhesive layer thicker than the first adhesive layer may be formed between the top insulator and the cap plate.
상기 돌출부와 상기 단자홀 사이에는 제4 접착층이 형성될 수 있다.A fourth adhesive layer may be formed between the protrusion and the terminal hole.
본 발명의 일 실시예에 따른 이차전지는, 외부 충격이나 반복 하중이 작용하는 경우에는 전극단자의 회전을 방지할 수 있다. 이에 따라, 전극단자에 연결되는 버스바와 전기적인 연결이 끊어지는 것을 방지할 수 있다.The secondary battery according to an embodiment of the present invention can prevent rotation of the electrode terminal when an external impact or a cyclic load is applied. Accordingly, the electrical connection with the bus bar connected to the electrode terminal can be prevented.
도 1은 본 발명의 일 실시예에 따른 이차전지를 나타낸 사시도이다. 1 is a perspective view of a rechargeable battery according to an exemplary embodiment of the present invention.
도 2는 도 1의 Ⅱ-Ⅱ선을 따라 잘라서 본 단면도이다.FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 1.
도 3은 도 1의 Ⅲ-Ⅲ선을 따라 잘라서 본 단면도이다.3 is a cross-sectional view taken along line III-III of FIG. 1.
도 4는 도 2에 도시한 제1 전극단자와 캡플레이트 부분의 제1 실시예에 따른 연결관계를 확대하여 나타낸 확대도이다.4 is an enlarged view illustrating an enlarged connection relationship between a first electrode terminal and a cap plate portion illustrated in FIG. 2.
도 5는 도 2에 도시한 제1 전극단자와 캡플레이트 부분의 제2 실시예에 따른연결관계를 확대하여 나타낸 확대도이다.FIG. 5 is an enlarged view illustrating an enlarged connection relationship between a first electrode terminal and a cap plate portion illustrated in FIG. 2.
도 6은 도 2에 도시한 제1 전극단자와 캡플레이트 부분의 제3 실시예에 따른연결관계를 확대하여 나타낸 확대도이다.6 is an enlarged view illustrating an enlarged connection relationship between a first electrode terminal and a cap plate portion illustrated in FIG. 2.
도 7은 도 2에 도시한 제1 전극단자와 캡플레이트 부분의 제4 실시예에 따른연결관계를 확대하여 나타낸 확대도이다.FIG. 7 is an enlarged view illustrating an enlarged connection relationship between a first electrode terminal and a cap plate portion illustrated in FIG. 2.
도 8은 도 2에 도시한 제1 전극단자와 캡플레이트 부분의 제5 실시예에 따른연결관계를 확대하여 나타낸 확대도이다.8 is an enlarged view illustrating an enlarged connection relation between a first electrode terminal and a cap plate portion illustrated in FIG. 2.
이하, 첨부한 도면을 참고로 하여 본 발명의 실시예에 대하여 본 발명이 속하는 기술 분야에서 통상의 지식을 가진 자가 용이하게 실시할 수 있도록 상세히 설명한다. 본 발명은 여러 가지 상이한 형태로 구현될 수 있으며 여기에서 설명하는 실시예에 한정되지 않는다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.
본 발명을 명확하게 설명하기 위해서 설명과 관계없는 부분은 생략하였으며, 명세서 전체를 통하여 동일 또는 유사한 구성요소에 대해서는 동일한 참조 부호를 붙이도록 한다.In order to clearly describe the present invention, parts irrelevant to the description are omitted, and like reference numerals designate like elements throughout the specification.
또한, 도면에서 나타난 각 구성의 크기 및 두께는 설명의 편의를 위해 임의로 나타내었으므로, 본 발명이 반드시 도시된 바에 한정되지 않는다.In addition, since the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of description, the present invention is not necessarily limited to the illustrated.
또한, 명세서 전체에서, 어떤 부분이 어떤 구성요소를 "포함" 한다고 할 때, 이는 특별히 반대되는 기재가 없는 한 다른 구성요소를 제외하는 것이 아니라 다른 구성요소를 더 포함할 수 있는 것을 의미한다.In addition, throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding the other components unless otherwise stated.
도 1은 본 발명의 일 실시예에 따른 이차전지를 나타낸 사시도이고, 도 2는 도 1의 Ⅱ-Ⅱ선을 따라 잘라서 본 단면도이고, 도 3은 도 1의 Ⅲ-Ⅲ선을 따라 잘라서 본 단면도이다.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 a line II-II of FIG. 1, and FIG. 3 is a cross-sectional view taken along a line III-III of FIG. 1. to be.
본 발명의 일 실시예에 따른 이차전지는 복수개가 서로 병렬 또는 직렬로 연결되어 하이브리드 자동차 등의 구동력원으로 이용될 수 있다. 이때, 복수개의 이차전지의 각각의 전극단자는 버스바로 연결될 수 있다. 이하에서는 도면을 참고하여 이차전지에 대해 설명한다. Secondary batteries according to an embodiment of the present invention may be used as a driving power source of a hybrid vehicle by connecting a plurality of them in parallel or in series with each other. In this case, each electrode terminal of the plurality of secondary batteries may be connected to a bus bar. Hereinafter, a secondary battery will be described with reference to the drawings.
도 1 내지 도 3을 참고하면, 이차전지(100)는 전류를 충전 및 방전하는 전극조립체(10), 전극조립체(10)와 전해액을 내장하는 케이스(20), 케이스(20)의 개구에 결합되는 캡플레이트(35), 캡플레이트(35)에 설치되는 제1 전극단자(31) 및 제2 전극단자(32)를 포함할 수 있다. 1 to 3, the secondary battery 100 is coupled to an electrode assembly 10 for charging and discharging a current, a case 20 containing an electrode assembly 10 and an electrolyte, and an opening of the case 20. The cap plate 35 may include a first electrode terminal 31 and a second electrode terminal 32 installed on the cap plate 35.
전극조립체(10)는 제1 전극(11)과 제2 전극(12) 및 세퍼레이터(13)를 포함할 수 있다. 예를 들면, 절연체인 세퍼레이터(13)의 양면에 제1 전극(11)과 제2 전극(12)을 배치하고, 제1 전극(11), 세퍼레이터(13) 및 제2 전극(12)을 젤리롤 상태로 귄취하여 전극조립체(10)를 형성할 수 있다. The electrode assembly 10 may include a first electrode 11, a second electrode 12, and a separator 13. For example, the 1st electrode 11 and the 2nd electrode 12 are arrange | positioned on both surfaces of the separator 13 which is an insulator, and the 1st electrode 11, the separator 13, and the 2nd electrode 12 are jelly | jagged. The electrode assembly 10 may be formed by rolling in a roll state.
제1 전극(11)은 일례로, 음극일 수 있다. 제1 전극(11)은 금속 박판의 집전체에 활물질을 도포한 코팅부 및 상기 집전체에 연결되는 제1 전극탭(11a)을 포함할 수 있다. 제2 전극(12)은 일례로, 양극일 수 있다. 제2 전극(12)은 제1 전극(11)과 마찬가지로 코팅부와 제2 전극탭(12a)을 포함할 수 있다.The first electrode 11 may be, for example, a cathode. The first electrode 11 may include a coating unit in which an active material is coated on a current collector of a thin metal plate, and a first electrode tab 11a connected to the current collector. The second electrode 12 may be, for example, an anode. Like the first electrode 11, the second electrode 12 may include a coating part and a second electrode tab 12a.
이하에서는 제1 전극(11)은 음극인 것을 예로 들어 설명한다. 제2 전극(12)은 양극인 것을 예로 들어 설명한다. 제1 전극(11)의 집전체는 구리 박판으로 형성되고, 제2 전극(12)의 집전체는 알루미늄 박판으로 형성될 수 있다. In the following description, the first electrode 11 is a cathode. The second electrode 12 will be described taking as an example an anode. The current collector of the first electrode 11 may be formed of a thin copper plate, and the current collector of the second electrode 12 may be formed of an aluminum thin plate.
제1 전극탭(11a)과 제2 전극탭(12a)은 제1 전극(11) 및 제2 전극(12)의 집전체와 각각 전기적으로 연결될 수 있다. 제1 전극(11) 및 제2 전극(12)이 권취되었을 때, 전극조립체(10)의 중앙에서 인출되도록 집전체에 각각 연결될 수 있다. 예를 들면, 제1 전극탭(11a)은 제1 전극(11)의 권취 시작부분에서 연결되고, 제2 전극탭(12a)은 제2 전극(12)에서 제1 전극(11)과 이격되어 연결될 수 있다. 다른 예로, 제1 전극탭(11a)과 제2 전극탭(12a)은 복수개가 형성될 수 있다. The first electrode tab 11a and the second electrode tab 12a may be electrically connected to current collectors of the first electrode 11 and the second electrode 12, respectively. When the first electrode 11 and the second electrode 12 are wound, they may be connected to the current collector so as to be drawn out from the center of the electrode assembly 10. For example, the first electrode tab 11a is connected at the beginning of the winding of the first electrode 11, and the second electrode tab 12a is spaced apart from the first electrode 11 at the second electrode 12. Can be connected. As another example, a plurality of first electrode tabs 11a and second electrode tabs 12a may be formed.
케이스(20)는 전극조립체(10)와 전해액을 수용하며, 직육면체 형태로 이루어질 수 있다. 예를 들면, 케이스(20)는 직육면체의 일측에 개구를 형성하며 전극조립체(10)는 케이스(20)의 외부에서 내부 공간으로 삽입될 수 있다. The case 20 accommodates the electrode assembly 10 and the electrolyte, and may have a rectangular parallelepiped shape. For example, the case 20 may form an opening on one side of the rectangular parallelepiped, and the electrode assembly 10 may be inserted into the internal space from the outside of the case 20.
캡플레이트(35)는 케이스(20)의 개구에 설치되어 케이스(20)를 밀폐한다. 예를 들면, 케이스(20)와 캡플레이트(35)는 알루미늄 재질로 형성되어 서로 용접될 수 있다. The cap plate 35 is installed in the opening of the case 20 to seal the case 20. For example, the case 20 and the cap plate 35 may be formed of aluminum and welded to each other.
캡플레이트(35)는 하나 이상의 개구를 가질 수 있다. 예를 들면, 제1 전극단자(31)가 연결되는 단자홀(35b) 및 벤트홀(24)을 구비할 수 있다. 벤트홀(37)은 이차전지(100)의 충전 및 방전으로 발생되는 내부 가스 및 내부 압력을 배출할 수 있도록 벤트플레이트(37a)로 밀폐된다. 이차전지(100)의 내부 압력이 설정 압력에 이르면, 벤트플레이트(37a)가 절개되어 벤트홀(37)을 개방한다. 벤트플레이트(37a)는 절개를 유도하는 노치(37b)를 가진다.The cap plate 35 may have one or more openings. For example, a terminal hole 35b and a vent hole 24 to which the first electrode terminal 31 is connected may be provided. The vent hole 37 is sealed with a vent plate 37a to discharge the internal gas and the internal pressure generated by the charging and discharging of the secondary battery 100. When the internal pressure of the secondary battery 100 reaches the set pressure, the vent plate 37a is cut to open the vent hole 37. The vent plate 37a has a notch 37b for inducing an incision.
제1 전극단자(31)는 캡플레이트(35) 상면에 돌출되는 제1 스피닝터미널(31a)과 제1 스피닝터미널에서 연장 형성되는 돌출부(31b)를 포함할 수 있다. 제1 전극단자(31)는 원형으로 형성될 수 있다. 예를 들면, 돌출부(31b)는 단자홀(35b)에 삽입되어 캡플레이트(35)를 관통하여 전극조립체(10)의 제1 전극탭(11a)과 제1 리드탭(41)을 매개로 전기적으로 연결될 수 있다. The first electrode terminal 31 may include a first spinning terminal 31a protruding from an upper surface of the cap plate 35 and a protrusion 31b extending from the first spinning terminal. The first electrode terminal 31 may be formed in a circular shape. For example, the protrusion 31b is inserted into the terminal hole 35b to penetrate through the cap plate 35 to electrically connect the first electrode tab 11a and the first lead tab 41 of the electrode assembly 10. Can be connected.
제1 스피닝터미널(31a)은 캡플레이트(35) 상면에 위치하게 되며, 원형으로 형성될 수 있다. 돌출부(31b)는 제1 리드탭(41)과 스피닝 공정을 통해 결합될 수 있다. 예를 들면, 스피닝 장치의 펀치에 제1 전극단자(31)를 연결하여, 캡플레이트(35)에 형성된 관통홀에 끼우며 회전시키면서 캡플레이트(35)에 연결시킬 수 있다. 이때, 펀치는 제1 전극단자(31)가 펀치에 부착되는 것을 방지하기 위해 펀치 표면에 플라즈마 또는 티타늄 등의 코팅이 적용되어 있을 수 있다. The first spinning terminal 31a is positioned on the upper surface of the cap plate 35 and may be formed in a circular shape. The protrusion 31b may be coupled to the first lead tab 41 through a spinning process. For example, the first electrode terminal 31 may be connected to the punch of the spinning device, and may be connected to the cap plate 35 while being rotated while being inserted into the through hole formed in the cap plate 35. In this case, the punch may be coated with a plasma or titanium coating on the punch surface to prevent the first electrode terminal 31 from being attached to the punch.
제1 스피닝터미널(31a)과 돌출부(31b)는 일체로 형성될 수 있으며 단일 금속으로 형성될 수 있다. 예를 들면, 제1 전극(11)은 음극일 경우, 집전체가 구리 박판으로 되므로 제1 스피닝터미널(31a)와 돌출부(31b)도 각각 구리로 형성될 수 있다. The first spinning terminal 31a and the protrusion 31b may be integrally formed and may be formed of a single metal. For example, when the first electrode 11 is a cathode, since the current collector is made of a thin copper plate, the first spinning terminal 31a and the protrusion 31b may be formed of copper, respectively.
전술한 바와 같이, 제1 전극단자(31)에는 버스바가 연결될 수 있다. 따라서, 제1 스피닝터미널(31a) 상부에는 버스바와 결합력을 향상시키기 위해 버스바와 재질이 동일한 제2 스피팅터미널(31c)이 연결될 수 있다. 예를 들면, 버스바는 일반적으로 알루미늄 재질로 형성되므로 제2 스피팅터미널(31c)은 알루미늄으로 형성될 수 있다.As described above, a bus bar may be connected to the first electrode terminal 31. Therefore, the second spinning terminal 31c having the same material as the bus bar may be connected to the upper portion of the first spinning terminal 31a to improve the coupling force with the bus bar. For example, since the bus bar is generally made of aluminum, the second spitting terminal 31c may be made of aluminum.
제1 리드탭(41)은 제1 전극단자(31)의 돌출부(31b)와 제1 전극탭(11a) 사이를 전기적으로 연결한다. 제1 전극(11)의 집전체가 구리 박판으로 형성되므로 제1 리드탭(41)은 구리로 형성될 수 있다. The first lead tab 41 electrically connects the protrusion 31b of the first electrode terminal 31 and the first electrode tab 11a. Since the current collector of the first electrode 11 is formed of a thin copper plate, the first lead tab 41 may be formed of copper.
돌출부(31b)는 제1 스피닝터미널(31a) 하부에 일체로 형성되어 연장되며, 단자홀(35b)을 관통하여 제1 리드탭(41)에 삽입되고, 스피닝 공정을 통해 제1 리드탭(41)과 연결될 수 있다. The protruding portion 31b is formed integrally with the lower portion of the first spinning terminal 31a to extend, is inserted into the first lead tab 41 through the terminal hole 35b, and the first lead tab 41 through a spinning process. ) Can be connected.
가스켓(50)은 제1 스피닝터미널(31a)과 캡플레이트(35) 사이에 개재된다. 가스켓(50)은 제1 스피닝터미널(31a)과 캡플레이트(35)를 절연시킨다. 제1 스피닝터미널(31a)은 가스켓(50)을 개재한 상태로 캡플레이트(35)의 외측에 설치된다. The gasket 50 is interposed between the first spinning terminal 31 a and the cap plate 35. The gasket 50 insulates the first spinning terminal 31a from the cap plate 35. The first spinning terminal 31a is installed outside the cap plate 35 with the gasket 50 interposed therebetween.
가스켓(50)은 제1 전극단자(31)의 돌출부(31b)와 캡플레이트(35)의 단자홀(35b) 내면 사이에 설치되어, 돌출부(31b)과 캡플레이트(35) 사이를 실링하고 전기적으로 절연할 수 있다. 가스켓(50)은 제1 리드탭(41)과 캡플레이트(35)의 내면 사이에 더 연장 설치되어, 제1 리드탭(41)과 캡플레이트(35) 사이를 더 전기적으로 절연할 수 있다. The gasket 50 is installed between the protrusion 31b of the first electrode terminal 31 and the inner surface of the terminal hole 35b of the cap plate 35 to seal between the protrusion 31b and the cap plate 35 and electrically. Can be insulated. The gasket 50 may be further extended between the first lead tab 41 and the inner surface of the cap plate 35 to further electrically insulate the first lead tab 41 from the cap plate 35.
제2 전극단자(32)는 원형으로 형성되는 터미널부(32a) 및 터미널부(32a)와 반대방향을 돌출되는 전극연결부(32b)를 포함할 수 있다. 예를 들면, 전극연결부(32b)는 전극조립체(10)의 제2 전극(12)과 전기적으로 연결될 수 있다. 터미널부(32a)에는 버스바가 연결될 수 있다. 즉, 제2 전극(12)은 캡플레이트(35) 및 케이스(20)에 대전될 수 있다. The second electrode terminal 32 may include a terminal portion 32a formed in a circular shape and an electrode connection portion 32b protruding in a direction opposite to the terminal portion 32a. For example, the electrode connector 32b may be electrically connected to the second electrode 12 of the electrode assembly 10. The bus bar may be connected to the terminal portion 32a. That is, the second electrode 12 may be charged to the cap plate 35 and the case 20.
터미널부(32a)는 제1 전극단자(31)의 제1 스피닝터미널(31a)과 동일하게 원형으로 형성될 수 있다. 전극연결부(32b)는 제2 전극탭(12a)과 제2 리드탭(42)을 매개로 연결될 수 있으며 사각형 단면으로 형성될 수 있다. The terminal portion 32a may be formed in the same circular shape as the first spinning terminal 31a of the first electrode terminal 31. The electrode connector 32b may be connected to the second electrode tab 12a and the second lead tab 42 by a rectangular cross section.
터미널부(32a) 및 전극연결부(32b)는 캡플레이트(35)를 프레스로 압착하여 캡플레이트(35)에 일체로 형성될 수 있다. 이를 통해, 제2 전극단자(32)의 터미널부(32a)는 버스바와 연결될 경우, 반복하중에 의해서도 터미널부(32a)의 회전이 없으므로, 버스바와 보다 안정적으로 전기적인 연결을 유지할 수 있다. The terminal portion 32a and the electrode connecting portion 32b may be integrally formed on the cap plate 35 by pressing the cap plate 35 with a press. As a result, when the terminal portion 32a of the second electrode terminal 32 is connected to the bus bar, there is no rotation of the terminal portion 32a even by repeated loads, so that the electrical connection with the bus bar can be maintained more stably.
도 4는 도 2에 도시한 제1 전극단자와 캡플레이트 부분의 제1 실시예에 따른연결관계를 확대하여 나타낸 확대도이다.4 is an enlarged view illustrating an enlarged connection relationship between a first electrode terminal and a cap plate portion illustrated in FIG. 2.
도 4를 참고하면, 제1 전극단자(31)는 제1 스피닝터미널(31a)과 제1 스피닝터미널(31a) 하부로 연장되는 돌출부(31b)를 포함할 수 있다. Referring to FIG. 4, the first electrode terminal 31 may include a first spinning terminal 31a and a protrusion 31b extending below the first spinning terminal 31a.
돌출부(31b)는 제1 전극(11)과 제1 리드탭(41)을 매개로 전기적으로 연결되며, 돌출부(31b)와 제1 리드탭(41)은 스피닝 공정을 통해 연결될 수 있다. 다른 예로, 돌출부(31b)는 제1 리드탭(41)에 삽입될 수 있다. The protrusion 31b may be electrically connected to the first electrode 11 through the first lead tab 41, and the protrusion 31b and the first lead tab 41 may be connected through a spinning process. As another example, the protrusion 31b may be inserted into the first lead tab 41.
가스켓(50)은 제1 전극단자(31)와 캡플레이트(35) 사이에 개재될 수 있다. 즉, 캡플레이트(35)와 맞닿는 제1 스피닝터미널(31a) 면에 가스켓(50)이 위치할 수 있다. 또한, 돌출부(31b)를 따라 캡플레이트(35) 내측면으로 가스켓(50)은 연장될 수 있다. 이를 통해 제1 전극단자(31)는 캡플레이트(35)와 전기적으로 절연될 수 있다. The gasket 50 may be interposed between the first electrode terminal 31 and the cap plate 35. That is, the gasket 50 may be positioned on the surface of the first spinning terminal 31a that contacts the cap plate 35. In addition, the gasket 50 may extend along the protrusion part 31b to the inner surface of the cap plate 35. Through this, the first electrode terminal 31 may be electrically insulated from the cap plate 35.
가스켓(50)과 캡플레이트(35) 사이에는 제1 접착층(61)이 형성될 수 있다. 이에 따라, 반복적인 하중에 의해 제1 스피닝터미널(31a)이 회전하는 것을 방지할 수 있다. 또한, 제1 스피닝터미널(31a)과 가스켓(50) 사이에는 제2 접착층(62)을 형성할 수 있다. 예를 들면, 제1 접착층(61) 및 제2 접착층(62)은 아크릴 접착제 또는 실리콘계 접착제 일 수 있다.The first adhesive layer 61 may be formed between the gasket 50 and the cap plate 35. As a result, it is possible to prevent the first spinning terminal 31a from rotating by the repetitive load. In addition, a second adhesive layer 62 may be formed between the first spinning terminal 31a and the gasket 50. For example, the first adhesive layer 61 and the second adhesive layer 62 may be acrylic adhesives or silicone adhesives.
이러한 구성을 통해 캡플레이트(35)에 추가적인 구조 없이도 제1 스피닝터미널(31a)이 회전하는 것을 방지할 수 있다. 또한, 제1 전극단자(31)의 토크에 대한 저항력 증대, 제1 전극단자의 반복 토크에 대한 내구성 증대, 버스바의 들뜸 방지 및 가스켓의 압축이 유지되도록 결합력을 유지하는 역할을 할 수 있는 효과가 있다. 또한, 돌출부의 스피닝 공정시 고정 역할을 할 수 있다. Through this configuration, it is possible to prevent the first spinning terminal 31a from rotating without the additional structure of the cap plate 35. In addition, the effect of increasing the resistance to the torque of the first electrode terminal 31, increase the durability of the repeating torque of the first electrode terminal, prevent the lifting of the bus bar and maintain the bonding force to maintain the compression of the gasket. There is. In addition, it may serve as a fixing during the spinning process of the protrusion.
도 5는 도 2에 도시한 제1 전극단자와 캡플레이트 부분의 제2 실시예에 따른연결관계를 확대하여 나타낸 확대도이다. FIG. 5 is an enlarged view illustrating an enlarged connection relationship between a first electrode terminal and a cap plate portion illustrated in FIG. 2.
도 5를 참고하여, 제1 전극단자와 캡플레이트의 연결관계를 설명하며 이하에서는 공통된 설명은 생략한다. Referring to FIG. 5, the connection relationship between the first electrode terminal and the cap plate will be described, and common description thereof will be omitted below.
캡플레이트(35)에는 단자홀(35b) 주위로 우묵한 홈부(35a)가 형성될 수 있다. 예를 들면, 홈부(35a)는 가운데가 평평하게 형성될 수 있다. 다만 이에 한정되지 않고, 가운데가 둥그스름하게 형성되며 움푹 패여 있을 수 있다. The cap plate 35 may have a recess 35a recessed around the terminal hole 35b. For example, the groove portion 35a may be formed flat in the middle. However, the present invention is not limited thereto, and the center may be rounded and may be recessed.
가스켓(50)은 홈부(35a)에 끼워지는 끼움부(50a)가 형성될 수 있다. 가스켓(50)의 끼움부(50a)는 캡플레이트(35)에 형성된 홈부(35a)에 끼워져 캡플레이트(35)와 보다 단단하게 연결될 수 있다. 끼움부(50a)에는 삽입부(50b)가 형성될 수 있다. 예를 들면, 삽입부(50b)는 끼움부(50a) 중앙에 하나가 형성될 수 있으며 복수개로 형성될 수도 있다. The gasket 50 may have a fitting portion 50a fitted into the groove portion 35a. The fitting portion 50a of the gasket 50 may be fitted into the groove portion 35a formed in the cap plate 35 to be more firmly connected to the cap plate 35. Insertion portion 50b may be formed in the fitting portion 50a. For example, one inserting portion 50b may be formed in the center of the fitting portion 50a, and a plurality of inserting portions 50b may be formed.
제1 스피닝터미널(31a)에는 가스켓(50)의 삽입부(50b)에 삽입되는 돌기부(31d)를 포함할 수 있다. 돌기부(31d)는 삽입부(50b)의 개수에 따라 형성될 수 있으며, 삽입부(50b)와 돌기부(31d)의 개수는 복수개로 형성될 수 있다. 이를 통해, 보다 안정적으로 제1 스피닝터미널(31a)과 가스켓(50)은 연결될 수 있다. The first spinning terminal 31a may include a protrusion 31d inserted into the insertion portion 50b of the gasket 50. The protrusion part 31d may be formed according to the number of the inserting parts 50b, and the number of the inserting part 50b and the protrusion part 31d may be formed in plural numbers. Through this, the first spinning terminal 31a and the gasket 50 can be more stably connected.
제1 접착층(61)은 캡플레이트(35) 홈부(35a)와 가스켓(50)의 끼움부(50a) 사이에 형성될 수 있다. 제2 접착층(62)은 제1 스피닝터미널(31a)과 가스켓(50) 사이에 형성되며, 삽입부(50b)와 돌기부(31d) 사이에 형성되어 둘 사이를 보다 강하게 연결할 수 있다. 이를 통해 제1 스피닝터미널(31a)이 회전하는 것을 방지할 수 있다. The first adhesive layer 61 may be formed between the groove portion 35a of the cap plate 35 and the fitting portion 50a of the gasket 50. The second adhesive layer 62 is formed between the first spinning terminal 31a and the gasket 50, and is formed between the inserting portion 50b and the protrusion 31d to more strongly connect the two. This can prevent the first spinning terminal 31a from rotating.
도 6은 도 2에 도시한 제1 전극단자와 캡플레이트 부분의 제3 실시예에 따른연결관계를 확대하여 나타낸 확대도이다. 6 is an enlarged view illustrating an enlarged connection relationship between a first electrode terminal and a cap plate portion illustrated in FIG. 2.
도 6을 참고하면, 가스켓(50)은 탑인슐레이터(54)와 실가스켓(52)으로 이루어질 수 있다. Referring to FIG. 6, the gasket 50 may include a top insulator 54 and a seal gasket 52.
탑인슐레이터(54)는 제1 스피닝터미널(31a)과 캡플레이트(35) 사이에 위치하며 캡플레이트(35) 상면과 제1 스피닝터미널(31a)을 절연시킬 수 있다. 실가스켓(52)은 캡플레이트(35)의 단자홀(35b)에 끼워지고, 캡플레이트(35)의 하면으로 이어져, 캡플레이트(35) 하면과 제1 리드탭(41) 사이를 절연시킬 수 있다. 또한, 실가스켓(52)은 돌출부(31b)를 캡플레이트(35)와 절연시키고, 돌출부(31b)와 단자홀(35b) 사이를 실링할 수 있다. The top insulator 54 is positioned between the first spinning terminal 31a and the cap plate 35 to insulate the top surface of the cap plate 35 from the first spinning terminal 31a. The seal gasket 52 is fitted into the terminal hole 35b of the cap plate 35 and extends to the lower surface of the cap plate 35 to insulate the lower surface of the cap plate 35 from the first lead tab 41. have. In addition, the seal gasket 52 may insulate the protrusion 31b from the cap plate 35 and seal the protrusion 31b between the terminal hole 35b.
실가스켓(52)은 캡플레이트(35) 상면으로부터 탑인슐레이터(54)의 두께만큼 연장될 수 있다. 제1 접착층(61)은 탑인슐레이터(54)와 캡플레이트(35) 사이에 형성되고, 제2 접착층(62)은 제1 스피닝터미널(31a)과 탑인슐레이터(54) 사이에 형성될 수 있다. 이 경우, 제1 전극단자(31)를 캡플레이트(35)에 연결할 때 조립 공정은 향상될 수 있다. The seal gasket 52 may extend from the top surface of the cap plate 35 by the thickness of the top insulator 54. The first adhesive layer 61 may be formed between the top insulator 54 and the cap plate 35, and the second adhesive layer 62 may be formed between the first spinning terminal 31a and the top insulator 54. In this case, the assembly process may be improved when the first electrode terminal 31 is connected to the cap plate 35.
또한, 제1 전극단자(31)에 강한 충격하중이 가해져 제1 전극단자(31)가 회전하게 되면서 탑인슐레이터(54)에 손상이 발생되어도, 제1 전극단자(31) 내측에 위치한 실가스켓(52)은 단자홀(35b)과 돌출부(31b) 사이를 실링하고 있으므로, 전해액의 누액 등을 방지할 수 있다. In addition, even if a strong impact load is applied to the first electrode terminal 31 and the first electrode terminal 31 rotates to cause damage to the top insulator 54, a seal gasket (not shown) inside the first electrode terminal 31 may be used. 52 seals between the terminal hole 35b and the protruding portion 31b, so that leakage of the electrolyte solution and the like can be prevented.
도 7은 도 2에 도시한 제1 전극단자와 캡플레이트 부분의 제4 실시예에 따른 연결관계를 확대하여 나타낸 확대도이다.  FIG. 7 is an enlarged view illustrating an enlarged connection relationship between a first electrode terminal and a cap plate portion illustrated in FIG. 2.
도 7을 참고하면, 제1 전극단자(31)의 제1 스피닝터미널(31a)과 캡플레이트(35) 사이에는 제3 접착층(63)이 형성되고, 제1 전극단자(31)의 돌출부(31b)와 캡플레이트(35) 사이에는 제4 접착층(64)이 형성될 수 있다. 이하에서는 공통된 설명은 생략하고, 본 실시예의 특징을 중심으로 설명한다.Referring to FIG. 7, a third adhesive layer 63 is formed between the first spinning terminal 31a of the first electrode terminal 31 and the cap plate 35, and the protrusion 31b of the first electrode terminal 31 is formed. ) And a fourth adhesive layer 64 may be formed between the cap plate 35. In the following, common descriptions are omitted, and description will be given focusing on the features of the present embodiment.
제3 접착층(63)은 캡플레이트(35)와 제1 스피닝터미널(31a) 사이를 절연할 수 있도록 두껍게 형성될 수 있다. 따라서, 제3 접착층(63)은 제1 접착층(61) 보다 두껍게 형성될 수 있다. 캡플레이트(35)에는 단자홀(35b) 주위로 홈부(35a)가 형성될 수 있으며, 홈부(35a)에는 요철구조가 형성되어 제1 스피닝터미널(31a)에 형성된 돌기부(31d)와 연결될 수 있다. The third adhesive layer 63 may be thickly formed to insulate the cap plate 35 from the first spinning terminal 31a. Therefore, the third adhesive layer 63 may be formed thicker than the first adhesive layer 61. The cap plate 35 may have a groove 35a formed around the terminal hole 35b, and an uneven structure may be formed in the groove 35a to be connected to the protrusion 31d formed in the first spinning terminal 31a. .
돌출부(31b)와 단자홀(35b) 사이에는 제4 접착층(64)이 형성될 수 있다. 예를 들면, 제3 접착층(63)과 제4 접착층(64)은 아크릴계 접착제 또는 실리콘계 접착제 일 수 있다. The fourth adhesive layer 64 may be formed between the protrusion part 31b and the terminal hole 35b. For example, the third adhesive layer 63 and the fourth adhesive layer 64 may be an acrylic adhesive or a silicone adhesive.
제4 접착층(64)을 형성함으로써, 제1 전극단자(31)는 탄성적으로 유동할 수 있다. 즉, 제1 전극단자(31)는 반복하중에 의해 회전하게 될 경우에도, 제4 접착층(64)에 의해 발생된 탄성력에 의해 원위치로 복귀할 수 있다. 따라서, 탄성적으로 유동할 수 있는 제1 전극단자(31)는 반복하중에 의한 내구성이 증대될 수 있다. By forming the fourth adhesive layer 64, the first electrode terminal 31 can flow elastically. That is, even when the first electrode terminal 31 is rotated by the repeated load, the first electrode terminal 31 can be returned to its original position by the elastic force generated by the fourth adhesive layer 64. Therefore, the durability of the first electrode terminal 31 which can flow elastically by cyclic load can be increased.
도 8은 도 2에 도시한 제1 전극단자와 캡플레이트 부분의 제5 실시예에 따른연결관계를 확대하여 나타낸 확대도이다.8 is an enlarged view illustrating an enlarged connection relation between a first electrode terminal and a cap plate portion illustrated in FIG. 2.
도 8을 참고하면, 단자홀(35b)과 돌출부(31b) 사이에 제4 접착층(64)이 형성되고, 제1 스피닝터미널(31a)과 캡플레이트(35) 사이에는 가스켓(50)이 개재될 수 있다. 이하에서는 공통된 설명은 생략하고, 본 실시예의 특징을 중심으로 설명한다. Referring to FIG. 8, a fourth adhesive layer 64 is formed between the terminal hole 35b and the protrusion 31b, and a gasket 50 is interposed between the first spinning terminal 31a and the cap plate 35. Can be. In the following, common descriptions are omitted, and description will be given focusing on the features of the present embodiment.
제1 스피닝터미널(31a)에는 제4 접착층(64)이 보다 길게 형성될 수 있도록 돌출부(31b)주위로 홈을 형성할 수 있다. 전술한 바와 같이 제4 접착층(64)을 통해 제1 전극단자(31)의 탄성적인 유동을 기대할 수 있고, 단자홀(35b)과 돌출부(31b) 사이를 실링할 수 있다. A groove may be formed around the protrusion 31b in the first spinning terminal 31a so that the fourth adhesive layer 64 can be formed longer. As described above, an elastic flow of the first electrode terminal 31 can be expected through the fourth adhesive layer 64, and the terminal hole 35b and the protrusion 31b may be sealed.
캡플레이트(35)에는 홈부(35a)가 형성되고 홈부(35a)에는 가스켓(50)의 끼움부(50a)가 연결된다. 이때, 상호 결합력을 향상시키기 위해 홈부(35a)는 요철구조로 형성되고, 끼움부(50a)는 요철구조에 대응되어 끼워져 연결될 수 있다. 또한, 제1 스피닝터미널(31a)의 돌기부(31d)도 끼움부(50a)에 끼워져 연결될 수 있다. 이러한 구조를 통해 제1 스피닝터미널(31a)과 가스켓(50) 및 캡플레이트(35)는 서로 강하게 연결할 수 있다. 따라서, 강한 충격하중이 제1 전극단자(31)에 전달 될 경우, 제1 전극단자(31)가 이차전지(100)에서 이탈되는 것을 방지할 수 있으며, 제1 전극단자(31)에 연결되는 버스바와 제1 전극단자(31)에서 이탈되는 것을 방지할 수 있다.A groove 35a is formed in the cap plate 35, and a fitting portion 50a of the gasket 50 is connected to the groove 35a. At this time, the groove portion 35a is formed in an uneven structure to improve the mutual coupling force, and the fitting portion 50a may be connected to be fitted corresponding to the uneven structure. In addition, the protrusion part 31d of the first spinning terminal 31a may be connected to the fitting part 50a. Through this structure, the first spinning terminal 31a and the gasket 50 and the cap plate 35 can be strongly connected to each other. Therefore, when a strong impact load is transmitted to the first electrode terminal 31, it is possible to prevent the first electrode terminal 31 from being separated from the secondary battery 100 and connected to the first electrode terminal 31. It is possible to prevent the bus bar from being separated from the first electrode terminal 31.
본 발명을 앞서 기재한 바에 따라 바람직한 실시예를 통해 설명하였지만, 본 발명은 이에 한정되지 않으며 다음에 기재하는 특허청구범위의 개념과 범위를 벗어나지 않는 한, 다양한 수정 및 변형이 가능하다는 것을 본 발명이 속하는 기술 분야에 종사하는 자들은 쉽게 이해할 것이다. Although the present invention has been described through the preferred embodiments as described above, the present invention is not limited thereto and various modifications and variations are possible without departing from the spirit and scope of the claims set out below. Those in the technical field to which they belong will easily understand.
(부호의 설명)(Explanation of the sign)
100: 이차전지 10: 전극조립체100: secondary battery 10: electrode assembly
11: 제1 전극 12: 제2 전극11: first electrode 12: second electrode
13: 세퍼레이터 11a: 제1 전극탭13: Separator 11a: First Electrode Tab
12a: 제2 전극탭 20: 케이스12a: second electrode tab 20: case
30: 캡조립체 31: 제1 전극단자30: cap assembly 31: first electrode terminal
31a: 제1 스피닝터미널 31b: 돌출부31a: first spinning terminal 31b: protrusion
31c: 제2 스피닝터미널 31d: 돌기부31c: 2nd spinning terminal 31d: protrusion
32: 제2 전극단자 32a: 터미널부 32: second electrode terminal 32a: terminal portion
32b: 전극연결부 35: 캡플레이트32b: electrode connection part 35: cap plate
35a: 홈부 35b: 단자홀35a: groove 35b: terminal hole
36: 전해액홀 36a: 뚜껑36: electrolyte hole 36a: lid
37: 벤트홀 37a: 벤트플레이트37: vent hole 37a: vent plate
37b: 노치 41: 제1 리드탭37b: notch 41: first lead tap
42: 제2 리드탭 50: 가스켓42: second lead tab 50: gasket
52: 실가스켓 54: 탑인슐레이터52: seal gasket 54: top insulator
50a: 끼움부 50b: 삽입부50a: fitting portion 50b: insertion portion
61: 제1 접착층 62: 제2 접착층61: first adhesive layer 62: second adhesive layer
63: 제3 접착층 64: 제4 접착층63: third adhesive layer 64: fourth adhesive layer

Claims (11)

  1. 제1 전극 및 제2 전극 사이에 개재되는 세퍼레이터를 포함하여 형성되는 전극조립체;An electrode assembly including a separator interposed between the first electrode and the second electrode;
    상기 전극조립체를 수용하는 케이스;A case accommodating the electrode assembly;
    상기 케이스의 개구를 밀폐하며 연결되는 캡플레이트;A cap plate sealingly connecting the opening of the case;
    상기 캡플레이트에 형성된 단자홀을 관통하여 상기 제1 전극과 전기적으로 연결되는 돌출부와 상기 캡플레이트 상면에서 돌출되며 원형으로 형성되는 제1 스피닝터미널을 가지는 제1 전극단자; 및A first electrode terminal having a protruding portion electrically connected to the first electrode through the terminal hole formed in the cap plate and a first spinning terminal protruding from an upper surface of the cap plate; And
    상기 제2 전극과 전기적으로 연결되는 제2 전극단자를 포함하고, A second electrode terminal electrically connected to the second electrode;
    상기 제1 스피닝터미널과 상기 캡플레이트 사이에는 가스켓이 개재되고, 상기 가스켓과 상기 캡플레이트 사이에는 제1 접착층이 형성된 이차전지.A secondary battery has a gasket interposed between the first spinning terminal and the cap plate, and a first adhesive layer is formed between the gasket and the cap plate.
  2. 제 1 항에 있어서, The method of claim 1,
    상기 제1 스피닝터미널과 상기 가스켓 사이에는 제2 접착층이 형성되는 이차전지.A secondary battery having a second adhesive layer formed between the first spinning terminal and the gasket.
  3. 제 1 항에 있어서,The method of claim 1,
    상기 캡플레이트에는 상기 단자홀 외측에서 상기 단자홀을 감싸는 우묵한 홈부가 형성되고, The cap plate is provided with a recessed groove portion surrounding the terminal hole outside the terminal hole,
    상기 가스켓은 상기 홈부를 향해 돌출되며, 상기 홈부에 끼워지는 끼움부를 포함하는 이차전지.The gasket protrudes toward the groove portion and includes a fitting portion fitted to the groove portion.
  4. 제 3 항에 있어서,The method of claim 3, wherein
    상기 제1 스피닝터미널은, The first spinning terminal,
    상기 가스켓을 향해 돌출되는 돌기부를 포함하고, A protrusion protruding toward the gasket,
    상기 돌기부는 상기 끼움부에 형성된 삽입부에 끼워져 연결되는 이차전지.The protrusion part is inserted into the insertion portion formed in the fitting portion secondary battery.
  5. 제 4 항에 있어서,The method of claim 4, wherein
    상기 제1 스피닝터미널에는 복수개의 돌기부가 돌출되고, 상기 끼움부에는 상기 복수개의 돌기부에 대응하는 복수개의 삽입부가 형성되어 상호 끼움 연결되는 이차전지.A plurality of protrusions protrude from the first spinning terminal, and a plurality of insertion portions corresponding to the plurality of protrusions are formed in the fitting portion, and the secondary batteries are connected to each other.
  6. 제 1 항에 있어서,The method of claim 1,
    상기 제2 전극단자는, The second electrode terminal,
    상기 캡플레이트 상면으로부터 돌출되고 원형으로 형성된 터미널부; 및A terminal portion protruding from an upper surface of the cap plate and formed in a circular shape; And
    상기 캡플레이트에서 상기 터미널부와 반대로 돌출되고, 상기 제2 전극과 전기적으로 연결되는 전극연결부를 포함하는 이차전지.A secondary battery protruding from the cap plate opposite to the terminal part and including an electrode connection part electrically connected to the second electrode.
  7. 제 6 항에 있어서,The method of claim 6,
    상기 터미널부와 상기 전극연결부는, 상기 캡플레이트에 일체로 형성되는 이차전지.The terminal part and the electrode connection part, the secondary battery is formed integrally with the cap plate.
  8. 제 1 항에 있어서,The method of claim 1,
    상기 제1 전극단자는, The first electrode terminal,
    상기 제1 스피닝터미널에 안착되고, 상기 제1 스피닝터미널과 재질이 다르게 형성되는 제2 스피팅터미널을 포함하는 이차전지.The secondary battery is mounted to the first spinning terminal, the secondary battery comprising a second spinning terminal formed of a different material from the first spinning terminal.
  9. 제 1 항에 있어서,The method of claim 1,
    상기 가스켓은,The gasket,
    상기 제1 스피닝터미널을 상기 캡플레이트 상면과 절연시키는 탑인슐레이터; 및A top insulator that insulates the first spinning terminal from the top surface of the cap plate; And
    상기 돌출부를 상기 캡플레이트로부터 절연시키고, 상기 단자홀에 끼워져 상기 캡플레이트 하면으로 이어져, 상기 캡플레이트 하면과 상기 제1 전극의 제1 집전부를 절연시키는 실가스켓을 포함하는 이차전지.And a seal gasket that insulates the protruding portion from the cap plate and is inserted into the terminal hole to the lower surface of the cap plate to insulate the lower surface of the cap plate and the first current collector of the first electrode.
  10. 제 1 항에 있어서,The method of claim 1,
    상기 탑인슐레이터와 상기 캡플레이트 사이에는 상기 제1 접착층 보다 두꺼운 제3 접착층이 형성되는 이차전지.A secondary battery having a third adhesive layer thicker than the first adhesive layer is formed between the top insulator and the cap plate.
  11. 제 10 항에 있어서,The method of claim 10,
    상기 돌출부와 상기 단자홀 사이에는 제4 접착층이 형성되는 이차전지.A secondary battery having a fourth adhesive layer formed between the protrusion and the terminal hole.
PCT/KR2017/009661 2016-09-06 2017-09-04 Secondary battery WO2018048160A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020160114636A KR102306448B1 (en) 2016-09-06 2016-09-06 Rechargeable battery
KR10-2016-0114636 2016-09-06

Publications (1)

Publication Number Publication Date
WO2018048160A1 true WO2018048160A1 (en) 2018-03-15

Family

ID=61561424

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2017/009661 WO2018048160A1 (en) 2016-09-06 2017-09-04 Secondary battery

Country Status (2)

Country Link
KR (1) KR102306448B1 (en)
WO (1) WO2018048160A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114930636A (en) * 2020-09-02 2022-08-19 宁德时代新能源科技股份有限公司 End cover assembly, battery monomer, battery, power utilization device and liquid injection method
WO2024175101A1 (en) * 2023-02-23 2024-08-29 蜂巢能源科技股份有限公司 Top cover assembly and battery having same

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4086995A4 (en) * 2020-02-12 2024-04-17 Murata Manufacturing Co., Ltd. Secondary battery
TW202141840A (en) * 2020-03-11 2021-11-01 南韓商Ｌｇ化學股份有限公司 Button type secondary battery
KR102786448B1 (en) * 2020-03-11 2025-03-26 주식회사 엘지에너지솔루션 Button type secondary battery
CN113826268A (en) * 2020-05-18 2021-12-21 宁德新能源科技有限公司 Battery and electric device with same
KR102252330B1 (en) * 2020-07-27 2021-05-14 주식회사 유로셀 Method for manufacturing prismatic cell having busbar connecting structure
KR102242274B1 (en) * 2020-07-27 2021-04-20 주식회사 유로셀 Prismatic cell having current collector connecting structure and method for manufacturing the same
WO2024158151A1 (en) * 2023-01-25 2024-08-02 주식회사 파인엠텍 Cap plate assembly for secondary batteries and manufacturing method of cap plate assembly
KR102613036B1 (en) * 2023-07-20 2023-12-12 (주)연호상사 Battery module
KR20250054362A (en) * 2023-10-16 2025-04-23 주식회사 엘지에너지솔루션 Secondary battery

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010017098A (en) * 1999-08-07 2001-03-05 김순택 Prismatic type sealed battery
KR100768181B1 (en) * 2001-10-18 2007-10-17 삼성에스디아이 주식회사 Square battery
KR101084056B1 (en) * 2010-07-21 2011-11-16 에스비리모티브 주식회사 Secondary battery
KR20140078812A (en) * 2012-12-18 2014-06-26 주식회사 엘지화학 Cap Assembly Improved Sealability and Battery Cell Employed with The Same
KR20150101864A (en) * 2014-02-27 2015-09-04 삼성에스디아이 주식회사 Secondary battery

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010017098A (en) * 1999-08-07 2001-03-05 김순택 Prismatic type sealed battery
KR100768181B1 (en) * 2001-10-18 2007-10-17 삼성에스디아이 주식회사 Square battery
KR101084056B1 (en) * 2010-07-21 2011-11-16 에스비리모티브 주식회사 Secondary battery
KR20140078812A (en) * 2012-12-18 2014-06-26 주식회사 엘지화학 Cap Assembly Improved Sealability and Battery Cell Employed with The Same
KR20150101864A (en) * 2014-02-27 2015-09-04 삼성에스디아이 주식회사 Secondary battery

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114930636A (en) * 2020-09-02 2022-08-19 宁德时代新能源科技股份有限公司 End cover assembly, battery monomer, battery, power utilization device and liquid injection method
WO2024175101A1 (en) * 2023-02-23 2024-08-29 蜂巢能源科技股份有限公司 Top cover assembly and battery having same

Also Published As

Publication number Publication date
KR20180027266A (en) 2018-03-14
KR102306448B1 (en) 2021-09-28

Similar Documents

Publication Publication Date Title
WO2018048160A1 (en) Secondary battery
WO2018147603A1 (en) Secondary battery
WO2018074842A1 (en) Secondary battery and module for same
WO2018199439A1 (en) Rechargeable battery
WO2017052041A1 (en) Battery module and battery pack comprising same
WO2017217641A1 (en) Battery module, and battery pack and vehicle comprising same
WO2014133275A1 (en) Secondary battery and manufacturing method therefor
WO2018048159A1 (en) Secondary battery
WO2021033943A1 (en) Rechargeable battery
WO2021033940A1 (en) Rechargeable battery
WO2018016747A1 (en) Rechargeable battery
WO2018026105A1 (en) Secondary battery
WO2021075733A1 (en) Battery cell, battery module comprising same battery cell, and battery pack comprising same battery module
WO2019078553A1 (en) Battery module and battery pack comprising same
WO2017188533A1 (en) Rechargeable battery having membrane
WO2019050181A1 (en) Secondary battery
WO2018021698A1 (en) Rechargeable battery
WO2023113424A1 (en) Secondary battery
WO2018004158A1 (en) Secondary battery module
WO2017030312A1 (en) Cell lead connection device, and battery module comprising same
WO2018056630A1 (en) Secondary battery
WO2018043889A1 (en) Secondary battery
WO2020027430A1 (en) Rechargeable battery having plurality of vents
WO2018056557A1 (en) Secondary battery, electrode assembly, and a method for manufacturing electrode assembly
WO2018016766A1 (en) Rechargeable battery

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17849044

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17849044

Country of ref document: EP

Kind code of ref document: A1