WO2017086593A1 - Sealing device for secondary battery - Google Patents

Sealing device for secondary battery Download PDF

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Publication number
WO2017086593A1
WO2017086593A1 PCT/KR2016/010936 KR2016010936W WO2017086593A1 WO 2017086593 A1 WO2017086593 A1 WO 2017086593A1 KR 2016010936 W KR2016010936 W KR 2016010936W WO 2017086593 A1 WO2017086593 A1 WO 2017086593A1
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WO
WIPO (PCT)
Prior art keywords
sealing
electrode lead
heat
heat dissipation
dissipation piece
Prior art date
Application number
PCT/KR2016/010936
Other languages
French (fr)
Korean (ko)
Inventor
김초롱
최용수
김상훈
정상석
황원필
김용
Original Assignee
주식회사 엘지화학
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
Priority claimed from KR1020160122460A external-priority patent/KR101925090B1/en
Application filed by 주식회사 엘지화학 filed Critical 주식회사 엘지화학
Priority to US15/736,475 priority Critical patent/US10559785B2/en
Priority to PL16866546T priority patent/PL3297057T3/en
Priority to EP16866546.1A priority patent/EP3297057B1/en
Priority to CN201680037933.5A priority patent/CN108292718B/en
Priority to JP2018504189A priority patent/JP6618608B2/en
Publication of WO2017086593A1 publication Critical patent/WO2017086593A1/en

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    • 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 of a single cell or a single battery
    • H01M50/183—Sealing members
    • H01M50/186—Sealing members characterised by the disposition of the sealing members
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
    • 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 of a single cell or a single battery
    • 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
    • H01M50/178—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for pouch or flexible bag 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
    • H01M50/531—Electrode connections inside a battery casing
    • 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 sealing device for a secondary battery, and more particularly, to a sealing device for a secondary battery having improved sealing property on a sealing portion of a battery case in which an electrode lead is located.
  • a secondary battery refers to a battery that can be charged and discharged, unlike a primary battery that cannot be charged.
  • Such a secondary battery is widely used in advanced electronic devices such as phones, notebook computers, and camcorders.
  • the secondary battery includes an electrode assembly including an electrode tab, an electrode lead coupled to the electrode tab of the electrode assembly, a battery case accommodating the electrode assembly with the tip of the electrode lead exposed to the outside, and the battery case. It includes a lead film surrounding the electrode lead provided in the sealing portion.
  • the secondary battery is heat-sealed to seal the sealing portion of the battery case in which the electrode assembly is accommodated, in this case using a sealing device.
  • the secondary battery sealing apparatus has a problem in that the sealing portion is over-sealed while heat source is not discharged to the outside during heat fusion of the sealing portion in which the electrode lead is located, and in particular, the insulation film is damaged while the sealing portion is sealed, resulting in poor insulation. There was a problem that occurred.
  • an object of the present invention is to discharge the heat source generated in the sealing portion through the electrode lead to the outside during heat fusion to the sealing portion of the battery case in which the electrode lead is located
  • the present invention provides a sealing device for a secondary battery which prevents the sealing of the sealing part and poor insulation.
  • the present invention for achieving the above object is a secondary battery sealing device for sealing the sealing portion of the battery case is located in the electrode lead coupled to the electrode assembly, sealing by applying heat and pressure to the sealing portion of the battery case in which the electrode lead is located A thermal fusion member; And a temperature rise preventing member which is supported at the tip of the electrode lead and prevents the temperature rise of the sealing part by cooling the sealing part through the electrode lead.
  • the temperature increase preventing member may cool the sealing part by dissipating heat to the outside through the electrode lead.
  • the temperature increase preventing member may cool the sealing part with cold generated by cooling the electrode lead.
  • the temperature increase preventing member may support the tip of the electrode lead at a lower temperature than the heat sealing member.
  • the temperature increase preventing member may be provided as a first heat dissipation piece and a second heat dissipation piece respectively supporting both side surfaces of the tip of the electrode lead.
  • the first heat dissipation piece may have a lower temperature than the heat seal member, and the second heat dissipation piece may have a lower temperature than the first heat dissipation piece.
  • the first heat dissipation piece may support one end surface of the electrode lead, and after a set time, the second heat dissipation piece may support the other end surface of the electrode lead.
  • the set time may be 1 to 5 seconds.
  • the temperature increase preventing member may cool the sealing part by supporting the tip of the electrode lead for 1 to 5 seconds after the heat sealing member is separated from the sealing part.
  • the heat dissipation member is separated from the sealing portion, and the second heat dissipation piece is separated from the tip of the electrode lead, while the first heat dissipation piece supports the tip of the electrode lead for 1 to 5 seconds. Can be cooled.
  • the present invention has the following effects.
  • the secondary battery sealing apparatus includes a temperature rise preventing member supported on the electrode lead to cool the sealing portion through the electrode lead to prevent the temperature rise of the sealing portion, thereby sealing the sealing portion And insulation failure can be prevented.
  • the temperature increase preventing member according to the present invention can effectively cool the sealing part by dissipating heat to the outside through the electrode lead.
  • the temperature increase preventing member according to the present invention can effectively cool the sealing part with cold generated by cooling the electrode lead.
  • the temperature increase preventing member according to the present invention can be released more effectively the heat generated in the sealing portion by providing a first heat dissipation piece and a second heat dissipation piece having different temperatures.
  • the first heat dissipation piece and the second heat dissipation piece included in the temperature increase preventing member according to the present invention first release the low heat of the initial heat fusion of the sealing portion to the outside while the first heat dissipation piece is supported by the electrode lead, and then the first heat dissipation piece. While the second heat dissipation piece having a lower temperature than the heat dissipation piece is supported by the electrode lead, the high heat of the late heat-sealing portion of the sealing portion can be released to the outside.
  • the temperature increase preventing member according to the present invention can prevent the occurrence of sealing and insulation failure due to the heat remaining in the sealing part by supporting the electrode lead and cooling the sealing part even after the heat sealing of the sealing part.
  • FIG. 1 is a perspective view showing a secondary battery according to an embodiment of the present invention.
  • Figure 2 is a cross-sectional view showing a sealing device for a secondary battery according to an embodiment of the present invention.
  • FIG. 3 to 5 are views showing a state of use of the sealing device for a secondary battery according to an embodiment of the present invention
  • Figure 3 is a view showing the heat-sealing state of the sealing portion of the battery case in which the electrode lead is placed
  • Figure 4 is an electrode 5 is a view illustrating an initial state of heat sealing of a battery case in which a lead is located
  • FIG. 5 is a view illustrating a late state of heat sealing of the battery case in which an electrode lead is located
  • FIG. 6 is a sealing part of a battery case in which an electrode lead is located.
  • the drawing shows the completion state of thermal fusion.
  • FIG. 7 is a cross-sectional view showing a sealing device for a secondary battery according to another embodiment of the present invention.
  • a secondary battery includes an electrode assembly 110 having an electrode tab 111 and an electrode coupled to the electrode tab 111 of the electrode assembly 110.
  • the secondary battery according to an embodiment of the present invention having the configuration as described above seals the sealing unit 121 in a state in which the electrode assembly 110 is accommodated in the battery case 120, and seals the sealing apparatus 200. use.
  • the secondary battery sealing apparatus 200 heats the heat sealing member 210 and the heat generated in the sealing portion 121 to seal the sealing portion 121.
  • Cooling through the electrode lead 130 includes a temperature increase preventing member 220 to prevent the temperature rise of the sealing portion 121.
  • the heat sealing member 210 includes an upper sealing part and a lower sealing part which seal the upper and lower surfaces of the sealing part 121 of the battery case 120 by applying heat and pressure at the same time.
  • the heat sealing member 210 is heat-sealed to seal the sealing portion 121 of the battery case 120 in which the electrode lead 130 is located, at this time the temperature of the sealing portion 121 rises and the sealing portion 121 )
  • Has been a problem of sealing in particular, if the insulating film attached to the inner surface of the sealing portion 121 is damaged, poor insulation may occur.
  • a temperature increase preventing member 220 for cooling the sealing part 121 of the battery case 120 through the electrode lead 130 is provided.
  • the temperature increase preventing member 220 cools the sealing part 121 by dissipating heat from the sealing part 121 to the outside through the electrode lead 130, and thus the temperature of the sealing part 121. Lifting and fruiting can be prevented.
  • the temperature increase preventing member 220 supports the tip of the electrode lead 130 at a temperature lower than the heat generated from the heat sealing member 210. That is, the temperature increase preventing member 220 has a lower temperature than the heat generated in the sealing portion 121 heat-sealed by the heat sealing member 210, and thus heat generated in the sealing portion 121 is the electrode lead 130. Can be released stably.
  • the temperature increase preventing member 220 is provided with a first heat dissipation piece 221 and a second heat dissipation piece 222 so as to support both side surfaces of the tip of the electrode lead 130, respectively. That is, the first heat dissipation piece 221 supports one end surface (right upper surface when viewed in FIG. 2) of the electrode lead 130, and the second heat dissipation piece 222 is the other end surface of the electrode lead 130 ( 2, the lower right side) is supported. Accordingly, the heat of the sealing part 121 positioned on the upper and lower sides of the electrode lead 130 may be uniformly sucked and discharged to the outside, thereby increasing the sealing property of the sealing part 121.
  • first heat dissipation piece 221 and the second heat dissipation piece 222 may have the same temperature, but may have different temperatures. That is, the first heat dissipation piece 221 may have a lower temperature than the heat generated by the heat fusion member 210, and the second heat dissipation piece 222 may have a lower temperature than the first heat dissipation piece 221.
  • both the first heat dissipation piece 221 and the second heat dissipation piece 222 are supported by the electrode lead 130, and thus the sealing part (
  • the high heat generated in the 121 is quickly discharged to the outside through the first heat dissipation piece 221 and the second heat dissipation piece 222 to prevent the sealing.
  • the second heat dissipation piece 222 has a lower temperature than the first heat dissipation piece 221, heat generated in the sealing part 121 may be more quickly discharged to the outside.
  • the temperature increase preventing member 220 is heat-sealed member 210 is heat-sealed the sealing portion 121 and at the same time the first heat dissipation piece 221 is supported on one side of the front end of the electrode lead 130, After the time, the second heat dissipation piece 222 is supported on the other end surface of the electrode lead 130, thereby further improving the sealing property of the sealing part 121.
  • the setting time is 1 to 5 seconds, in particular 3 seconds. That is, the heat fusion member 210 compresses the sealing part 121 in a heated state.
  • the second heat dissipation piece When the 222 supports the electrode lead 130, heat may be released while the sealing part 121 is not sealed, and a sealing failure may occur.
  • the sealing part 121 When the second heat dissipation member 222 supports the electrode lead 130 for more than 5 seconds after the first heat dissipation member 221 supports the electrode lead 130, the sealing part 121 may be oversealed, causing a defect. Can be. Accordingly, after the second heat dissipation piece 222 supports the electrode lead 130, the second heat dissipation piece 222 is supported on the electrode lead 130 within 1 second to 5 seconds, thereby sealing the sealing portion 121. Improvement and fruiting can be prevented.
  • the temperature rise preventing member 220 is heat-sealed by supporting the tip of the electrode lead 130 for 1 to 5 seconds even if the heat sealing is completed and the heat sealing member 210 is separated from the sealing portion 121. That is, even though the heat fusion is completed, heat remains in the sealing part 121, and thus the temperature increase preventing member 220 releases all of the heat remaining in the sealing part 121 to the outside to increase the sealing property.
  • the temperature increase preventing member 220 separates the second heat generating piece 222 from the electrode lead 130 first and the first heat dissipating piece 221 after the set time so that the sealing part 121 can gradually solidify. Separate from 130.
  • the heat fusion member 210 is separated from the sealing portion 121 and at the same time the second heat dissipation piece 222 is separated from the tip of the electrode lead 130, the first heat dissipation piece 221 is further 1 to 5 seconds
  • the sealing portion 121 is gradually solidified while supporting the tip of the electrode lead 130 to prevent excessive release of heat remaining in the sealing portion 121.
  • the secondary battery sealing apparatus according to the present invention having such a configuration can prevent the sealing portion of the battery case provided with the electrode lead from the excessive sealing and insulation failure.
  • the heat sealing member 210 is disposed on the sealing part 121 of the battery case 120 provided with the electrode lead 130.
  • the temperature increase preventing member 220 is disposed at the tip of the electrode lead 130. That is, the temperature increase preventing member 220 is provided with a first heat dissipation piece 221 and a second heat dissipation piece 222 disposed on the top and bottom surfaces of the electrode lead 130, respectively, and the first heat dissipation piece 221.
  • Silver has a temperature lower than the heat generated from the heat sealing member 210
  • the second heat dissipation piece 222 has a lower temperature than the first heat dissipation piece 221.
  • the second heat dissipation piece 222 may be at or below room temperature.
  • the heat sealing member 121 is heat-sealed and sealed by the heat sealing member 210, and at the same time, the first heat dissipation piece 221 of the temperature increase preventing member 220 is The heat generated in the sealing part 121 while being supported on the upper surface of the electrode lead 121 is discharged to the outside through the electrode lead 121 and the first heat dissipation piece 221 to cool the sealing part 121.
  • the second heat dissipation piece 222 is supported on the lower surface of the electrode lead 121. Accordingly, the high temperature heat generated in the sealing part 121 is quickly discharged to the outside through the electrode lead 121 and the second heat dissipation piece 222 to cool the sealing part 121, and thus the sealing part 121 of the sealing part 121 Prevents overseals.
  • the heat sealing member 210 is separated from the sealing part 121, and at the same time, the second heat dissipation piece 222 is the electrode lead ( 130, and thus the first heat dissipation piece 221 radiates heat generated in the sealing part 121 for 1 to 5 seconds. This is because if the heat remaining in the sealing portion 121 is released to the outside all the heat generated in the sealing portion 121 through the first heat dissipation piece 221 because the sealing portion 121 may be solidified quickly and the sealing property may be weakened. Release to the outside.
  • the secondary battery sealing apparatus 200 can prevent the occurrence of the sealing and insulation failure in the sealing portion of the battery case provided with the electrode lead.
  • the temperature increase preventing member 220 ′ of the secondary battery sealing apparatus 200 ′ is a cold air sealing portion generated by cooling the electrode lead 130. It may be a cooling device for cooling the 121, and the cooling device is divided into air cooling and water cooling when divided into large.
  • the temperature increase preventing member 220 ′ which is a cooling device, can directly cool the electrode lead 130 to more effectively cool the temperature of the sealing part 121 located in the electrode lead 130, and in particular, the sealing part 121. Cooling temperature of) can be adjusted more precisely and uniformly.
  • the secondary battery sealing apparatus 200 ′ includes a temperature increase preventing member 220 ′ cooling the sealing unit 121 with cold generated by cooling the electrode lead 130.
  • a temperature increase preventing member 220 ′ cooling the sealing unit 121 with cold generated by cooling the electrode lead 130.

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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)
  • Sealing Battery Cases Or Jackets (AREA)
  • Secondary Cells (AREA)

Abstract

The present invention relates to a sealing device for a secondary battery, which seals a sealing portion of a battery case in which an electrode lead coupled to an electrode assembly is disposed, the sealing device comprising: a thermal bonding member for applying heat and pressure to and sealing the sealing portion of the battery case in which the electrode lead is disposed; and a temperature rise preventing member for supporting the front end of the electrode lead and preventing a rise in temperature in the sealing portion by cooling the sealing portion through the electrode lead.

Description

이차전지용 실링장치Secondary Battery Sealing Device
관련출원과의 상호인용Citation with Related Applications
본 출원은 2015년 11월 18일자 한국특허출원 제10-2015-0162044호 및 2016년 09월 23일자 한국특허출원 제10-2016-0122460호에 기초한 우선권의 이익을 주장하며, 해당 한국특허출원의 문헌에 개시된 모든 내용은 본 명세서의 일부로서 포함된다.This application claims the benefit of priority based on Korean Patent Application No. 10-2015-0162044 dated November 18, 2015 and Korean Patent Application No. 10-2016-0122460 dated September 23, 2016. All content disclosed in the literature is included as part of this specification.
기술분야Technical Field
본 발명은 이차전지용 실링장치에 관한 것으로서, 특히 전극리드가 위치한 전지케이스의 실링부에 대한 실링성을 개선한 이차전지용 실링장치에 관한 것이다.The present invention relates to a sealing device for a secondary battery, and more particularly, to a sealing device for a secondary battery having improved sealing property on a sealing portion of a battery case in which an electrode lead is located.
일반적으로 이차 전지(secondary battery)는 충전이 불가능한 일차 전지와는 달리 충전 및 방전이 가능한 전지를 말하며, 이러한 이차 전지는 폰, 노트북 컴퓨터 및 캠코더 등의 첨단 전자 기기 분야에서 널리 사용되고 있다.Generally, a secondary battery refers to a battery that can be charged and discharged, unlike a primary battery that cannot be charged. Such a secondary battery is widely used in advanced electronic devices such as phones, notebook computers, and camcorders.
이차전지는 전극탭이 구비된 전극조립체와, 상기 전극조립체의 전극탭에 결합되는 전극리드, 상기 전극리드의 선단이 외부에 노출된 상태로 상기 전극조립체가 수용되는 전지케이스, 및 상기 전지케이스의 실링부에 구비된 전극리드를 감싸는 리드필름을 포함한다.The secondary battery includes an electrode assembly including an electrode tab, an electrode lead coupled to the electrode tab of the electrode assembly, a battery case accommodating the electrode assembly with the tip of the electrode lead exposed to the outside, and the battery case. It includes a lead film surrounding the electrode lead provided in the sealing portion.
한편, 상기한 이차전지는 상기 전극조립체가 수용된 상기 전지케이스의 실링부를 열융착하여 실링하는데, 이때 실링장치를 이용한다.On the other hand, the secondary battery is heat-sealed to seal the sealing portion of the battery case in which the electrode assembly is accommodated, in this case using a sealing device.
그러나 상기한 이차전지용 실링장치는 상기 전극리드가 위치한 상기 실링부의 열융착시 열원이 외부로 방출되지 못하면서 상기 실링부가 과실링되는 문제점이 있었으며, 특히 상기 실링부가 과실링되면서 절연필름이 훼손되어 절연 불량이 발생하는 문제점이 있었다.However, the secondary battery sealing apparatus has a problem in that the sealing portion is over-sealed while heat source is not discharged to the outside during heat fusion of the sealing portion in which the electrode lead is located, and in particular, the insulation film is damaged while the sealing portion is sealed, resulting in poor insulation. There was a problem that occurred.
본 발명은 상기와 같은 문제를 해결하기 위해 발명된 것으로, 본 발명의 목적은 전극리드가 위치한 전지케이스의 실링부에 대한 열융착시 상기 전극리드를 통해 상기 실링부에 발생한 열원을 외부로 방출하며, 이에 상기 실링부의 과실링과 절연 불량을 방지한 이차전지용 실링장치를 제공하는데 있다.The present invention has been invented to solve the above problems, an object of the present invention is to discharge the heat source generated in the sealing portion through the electrode lead to the outside during heat fusion to the sealing portion of the battery case in which the electrode lead is located The present invention provides a sealing device for a secondary battery which prevents the sealing of the sealing part and poor insulation.
상기와 같은 목적을 달성하기 위한 본 발명은 전극조립체에 결합된 전극리드가 위치한 전지케이스의 실링부를 실링하는 이차전지용 실링장치로서, 상기 전극리드가 위치한 상기 전지케이스의 실링부에 열과 압력을 가하여 실링하는 열융착부재; 및 상기 전극리드의 선단에 지지되고, 상기 전극리드를 통해 상기 실링부를 냉각하여 상기 실링부의 온도상승을 방지하는 온도상승방지부재를 포함할 수 있다.The present invention for achieving the above object is a secondary battery sealing device for sealing the sealing portion of the battery case is located in the electrode lead coupled to the electrode assembly, sealing by applying heat and pressure to the sealing portion of the battery case in which the electrode lead is located A thermal fusion member; And a temperature rise preventing member which is supported at the tip of the electrode lead and prevents the temperature rise of the sealing part by cooling the sealing part through the electrode lead.
상기 온도상승방지부재는 상기 전극리드를 통해 상기 실링부의 열을 외부로 방출하여 상기 실링부를 냉각할 수 있다.The temperature increase preventing member may cool the sealing part by dissipating heat to the outside through the electrode lead.
상기 온도상승방지부재는 상기 전극리드를 냉각함에 따라 발생하는 냉기로 상기 실링부를 냉각할 수 있다.The temperature increase preventing member may cool the sealing part with cold generated by cooling the electrode lead.
상기 온도상승방지부재는 상기 열융착부재 보다 낮은 온도로 상기 전극리드의 선단을 지지할 수 있다.The temperature increase preventing member may support the tip of the electrode lead at a lower temperature than the heat sealing member.
상기 온도상승방지부재는 상기 전극리드의 선단 양측면을 각각 지지하는 제1 방열편 및 제2 방열편으로 마련될 수 있다.The temperature increase preventing member may be provided as a first heat dissipation piece and a second heat dissipation piece respectively supporting both side surfaces of the tip of the electrode lead.
상기 제1 방열편은 상기 열융착부재 보다 낮은 온도를 가지며, 상기 제2 방열편은 상기 제1 방열편 보다 낮은 온도를 가질 수 있다.The first heat dissipation piece may have a lower temperature than the heat seal member, and the second heat dissipation piece may have a lower temperature than the first heat dissipation piece.
상기 제1 방열편이 상기 전극리드의 선단 일측면을 지지하고, 설정시간 후 상기 제2 방열편이 상기 전극리드의 선단 타측면을 지지할 수 있다.The first heat dissipation piece may support one end surface of the electrode lead, and after a set time, the second heat dissipation piece may support the other end surface of the electrode lead.
상기 설정시간은 1~5초일 수 있다.The set time may be 1 to 5 seconds.
상기 온도상승방지부재는 상기 열융착부재가 상기 실링부로부터 분리된 후에 1~5초간 더 상기 전극리드의 선단을 지지하여 상기 실링부를 냉각할 수 있다.The temperature increase preventing member may cool the sealing part by supporting the tip of the electrode lead for 1 to 5 seconds after the heat sealing member is separated from the sealing part.
상기 열융착부재가 상기 실링부로부터 분리됨과 동시에 상기 제2 방열편은 상기 전극리드의 선단으로부터 분리되는 한편, 상기 제1 방열편은 1~5초간 더 상기 전극리드의 선단을 지지하여 상기 실링부를 냉각할 수 있다.The heat dissipation member is separated from the sealing portion, and the second heat dissipation piece is separated from the tip of the electrode lead, while the first heat dissipation piece supports the tip of the electrode lead for 1 to 5 seconds. Can be cooled.
본 발명은 하기와 같은 효과가 있다.The present invention has the following effects.
첫째: 본 발명에 따른 이차전지용 실링장치는 전극리드에 지지되는 온도상승방지부재를 포함함으로써 상기 전극리드를 통해 상기 실링부를 냉각하여 상기 실링부의 온도상승을 방지할 수 있으며, 이에 상기 실링부의 과실링 및 절연 불량을 방지할 수 있다.First: The secondary battery sealing apparatus according to the present invention includes a temperature rise preventing member supported on the electrode lead to cool the sealing portion through the electrode lead to prevent the temperature rise of the sealing portion, thereby sealing the sealing portion And insulation failure can be prevented.
둘째: 본 발명에 따른 온도상승방지부재는 상기 전극리드를 통해 상기 실링부의 열을 외부로 방출하여 상기 실링부를 효과적으로 냉각할 수 있다.Secondly, the temperature increase preventing member according to the present invention can effectively cool the sealing part by dissipating heat to the outside through the electrode lead.
셋째: 본 발명에 따른 온도상승방지부재는 상기 전극리드를 냉각함에 따라 발생하는 냉기로 상기 실링부를 효과적으로 냉각할 수 있다.Third, the temperature increase preventing member according to the present invention can effectively cool the sealing part with cold generated by cooling the electrode lead.
넷째: 본 발명에 따른 온도상승방지부재는 온도가 서로 다른 제1 방열편 및 제2 방열편으로 마련함으로써 실링부에 발생한 열을 보다 효과적으로 방출할 수 있다.Fourth: The temperature increase preventing member according to the present invention can be released more effectively the heat generated in the sealing portion by providing a first heat dissipation piece and a second heat dissipation piece having different temperatures.
다섯째: 본 발명에 따른 온도상승방지부재에 포함된 제1 방열편 및 제2 방열편는 먼저 제1 방열편이 전극리드에 지지되면서 실링부의 열융착 초기의 낮은 열을 외부로 방출하고, 다음으로 제1 방열편 보다 낮은 온도인 제2 방열편이 전극리드에 지지되면서 실링부의 열융착 후기의 높은 열을 외부로 방출할 수 있다.Fifth: The first heat dissipation piece and the second heat dissipation piece included in the temperature increase preventing member according to the present invention first release the low heat of the initial heat fusion of the sealing portion to the outside while the first heat dissipation piece is supported by the electrode lead, and then the first heat dissipation piece. While the second heat dissipation piece having a lower temperature than the heat dissipation piece is supported by the electrode lead, the high heat of the late heat-sealing portion of the sealing portion can be released to the outside.
여섯째: 본 발명에 따른 온도상승방지부재는 실링부의 열융착 후에도 상기 전극리드에 지지하여 상기 실링부를 냉각함으로써 상기 실링부에 남아 있는 열에 의해 과실링 및 절연 불량이 발생하는 것을 방지할 수 있다.Sixth: The temperature increase preventing member according to the present invention can prevent the occurrence of sealing and insulation failure due to the heat remaining in the sealing part by supporting the electrode lead and cooling the sealing part even after the heat sealing of the sealing part.
도 1은 본 발명의 일실시예에 따른 이차전지를 도시한 사시도.1 is a perspective view showing a secondary battery according to an embodiment of the present invention.
도 2는 본 발명의 일실시예에 따른 이차전지용 실링장치를 도시한 단면도.Figure 2 is a cross-sectional view showing a sealing device for a secondary battery according to an embodiment of the present invention.
도 3 내지 도 5는 본 발명의 일실시예에 따른 이차전지용 실링장치의 사용상태를 나타낸 것으로, 도 3은 전극리드가 위치한 전지케이스의 실링부 열융착 준비상태를 나타낸 도면이고, 도 4는 전극리드가 위치한 전지케이스의 실링부 열융착 초기상태를 나타낸 도면이며, 도 5는 전극리드가 위치한 전지케이스의 실링부 열융착 후기상태를 나타낸 도면이고, 도 6은 전극리드가 위치한 전지케이스의 실링부 열융착 완료상태를 나타낸 도면임.3 to 5 are views showing a state of use of the sealing device for a secondary battery according to an embodiment of the present invention, Figure 3 is a view showing the heat-sealing state of the sealing portion of the battery case in which the electrode lead is placed, Figure 4 is an electrode 5 is a view illustrating an initial state of heat sealing of a battery case in which a lead is located, and FIG. 5 is a view illustrating a late state of heat sealing of the battery case in which an electrode lead is located, and FIG. 6 is a sealing part of a battery case in which an electrode lead is located. The drawing shows the completion state of thermal fusion.
도 7은 본 발명의 다른 실시예에 따른 이차전지용 실링장치를 도시한 단면도.7 is a cross-sectional view showing a sealing device for a secondary battery according to another embodiment of the present invention.
이하, 첨부한 도면을 참조하여 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 용이하게 실시할 수 있도록 본 발명의 실시예를 상세히 설명한다. 그러나 본 발명은 여러 가지 상이한 형태로 구현될 수 있으며 여기에서 설명하는 실시예에 한정되지 않는다. 그리고 도면에서 본 발명을 명확하게 설명하기 위해서 설명과 관계없는 부분은 생략하였으며, 명세서 전체를 통하여 유사한 부분에 대해서는 유사한 도면 부호를 붙였다.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. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.
본 발명의 일실시예에 따른 이차전지는 도 1에 도시되어 있는 것과 같이, 전극탭(111)이 구비된 전극조립체(110)와, 전극조립체(110)의 전극탭(111)에 결합되는 전극리드(130), 전극리드(130)의 선단이 외부에 노출된 상태로 전극조립체(110)가 수용되는 전지케이스(120), 및 전지케이스(120)의 실링부(121)에 위치한 전극리드(130)를 감싸는 리드필름(140)을 포함한다.As shown in FIG. 1, a secondary battery according to an exemplary embodiment of the present invention includes an electrode assembly 110 having an electrode tab 111 and an electrode coupled to the electrode tab 111 of the electrode assembly 110. The lead 130, the battery case 120 in which the electrode assembly 110 is accommodated while the tip of the electrode lead 130 is exposed to the outside, and the electrode lead positioned in the sealing part 121 of the battery case 120 ( It includes a lead film 140 surrounding the 130.
이와 같은 구성을 가지는 본 발명의 일실시예에 따른 이차전지는 전지케이스(120)에 전극조립체(110)를 수용한 상태로 실링부(121)를 실링하여 밀폐하며, 이때 실링장치(200)를 사용한다.The secondary battery according to an embodiment of the present invention having the configuration as described above seals the sealing unit 121 in a state in which the electrode assembly 110 is accommodated in the battery case 120, and seals the sealing apparatus 200. use.
본 발명의 일실시예에 따른 이차전지용 실링장치(200)는 도 2에 도시되어 있는 것과 같이, 실링부(121)를 실링하는 열융착부재(210)와, 실링부(121)에 발생한 열을 전극리드(130)를 통해 냉각하여 실링부(121)의 온도상승을 방지하는 온도상승방지부재(220)를 포함한다.As shown in FIG. 2, the secondary battery sealing apparatus 200 according to an exemplary embodiment of the present invention heats the heat sealing member 210 and the heat generated in the sealing portion 121 to seal the sealing portion 121. Cooling through the electrode lead 130 includes a temperature increase preventing member 220 to prevent the temperature rise of the sealing portion 121.
열융착부재(210)는 전지케이스(120)의 실링부(121) 상면과 하면을 동시에 열과 압력을 가하여 실링하는 상부 실링부 및 하부 실링부를 포함한다.The heat sealing member 210 includes an upper sealing part and a lower sealing part which seal the upper and lower surfaces of the sealing part 121 of the battery case 120 by applying heat and pressure at the same time.
한편, 열융착부재(210)는 전극리드(130)가 위치한 전지케이스(120)의 실링부(121)를 열융착하여 실링하게 되는데, 이때 실링부(121)의 온도가 상승하면서 실링부(121)가 과실링되는 문제가 있었으며, 특히 실링부(121) 내면에 부착된 절연필름이 훼손될 경우 절연 불량이 발생할 수 있다.On the other hand, the heat sealing member 210 is heat-sealed to seal the sealing portion 121 of the battery case 120 in which the electrode lead 130 is located, at this time the temperature of the sealing portion 121 rises and the sealing portion 121 ) Has been a problem of sealing, in particular, if the insulating film attached to the inner surface of the sealing portion 121 is damaged, poor insulation may occur.
이와 같은 문제점을 해결하기 위해 전극리드(130)를 통해 전지케이스(120)의 실링부(121)를 냉각하는 온도상승방지부재(220)가 구비된다.In order to solve this problem, a temperature increase preventing member 220 for cooling the sealing part 121 of the battery case 120 through the electrode lead 130 is provided.
온도상승방지부재(220)는 도 2를 참조하면, 전극리드(130)를 통해 실링부(121)의 열을 외부로 방출하여 실링부(121)를 냉각하며, 이에 실링부(121)의 온도상승 및 과실링을 방지할 수 있다.Referring to FIG. 2, the temperature increase preventing member 220 cools the sealing part 121 by dissipating heat from the sealing part 121 to the outside through the electrode lead 130, and thus the temperature of the sealing part 121. Lifting and fruiting can be prevented.
여기서 온도상승방지부재(220)는 열융착부재(210)에서 발생하는 열 보다 낮은 온도로 전극리드(130)의 선단을 지지한다. 즉, 온도상승방지부재(220)는 열융착부재(210)에 의해 열융착된 실링부(121)에 발생한 열 보다 낮은 온도를 가지게 되며, 이에 실링부(121)에 발생한 열을 전극리드(130)를 통해 안정적으로 방출시킬 수 있다. The temperature increase preventing member 220 supports the tip of the electrode lead 130 at a temperature lower than the heat generated from the heat sealing member 210. That is, the temperature increase preventing member 220 has a lower temperature than the heat generated in the sealing portion 121 heat-sealed by the heat sealing member 210, and thus heat generated in the sealing portion 121 is the electrode lead 130. Can be released stably.
한편, 온도상승방지부재(220)는 전극리드(130)의 선단 양측면을 각각 지지하도록 제1 방열편(221) 및 제2 방열편(222)으로 마련된다. 즉, 제1 방열편(221)은 전극리드(130)의 선단 일측면(도 2에서 보았을 때 우측 상면)을 지지하고, 제2 방열편(222)은 전극리드(130)의 선단 타측면(도 2에서 보았을 때 우측 하면)을 지지한다. 이에 전극리드(130)를 기준으로 상부와 하부에 위치한 실링부(121)의 열을 균일하게 흡입하여 외부로 방출할 수 있으며, 이에 실링부(121)의 실링성을 높일 수 있다.On the other hand, the temperature increase preventing member 220 is provided with a first heat dissipation piece 221 and a second heat dissipation piece 222 so as to support both side surfaces of the tip of the electrode lead 130, respectively. That is, the first heat dissipation piece 221 supports one end surface (right upper surface when viewed in FIG. 2) of the electrode lead 130, and the second heat dissipation piece 222 is the other end surface of the electrode lead 130 ( 2, the lower right side) is supported. Accordingly, the heat of the sealing part 121 positioned on the upper and lower sides of the electrode lead 130 may be uniformly sucked and discharged to the outside, thereby increasing the sealing property of the sealing part 121.
한편, 제1 방열편(221) 및 제2 방열편(222)는 동일한 온도를 가질 수도 있지만, 서로 다른 온도를 가질 수도 있다. 즉, 제1 방열편(221)은 열융착부재(210)에서 발생하는 열 보다 낮은 온도를 가지고, 제2 방열편(222)은 제1 방열편(221) 보다 낮은 온도를 가질 수 있다.Meanwhile, the first heat dissipation piece 221 and the second heat dissipation piece 222 may have the same temperature, but may have different temperatures. That is, the first heat dissipation piece 221 may have a lower temperature than the heat generated by the heat fusion member 210, and the second heat dissipation piece 222 may have a lower temperature than the first heat dissipation piece 221.
다시 말해, 열융착부재(210)에 의한 실링부(121)의 열융착 초기에는 열융착부재(210)에서 발생하는 열 보다 낮은 온도를 가지는 제1 방열편(221)만 전극리드(130)에 지지되면서 실링부(121)에 발생한 열의 방출을 최소화한다. 즉, 열융착 초기에 실링부(121)의 열이 과도하게 방출될 경우 실링성이 떨어질 수 있으며, 이에 실링부(121)의 열 방출을 최소할 필요가 있다.In other words, in the initial heat fusion of the sealing portion 121 by the heat fusion member 210, only the first heat dissipation piece 221 having a lower temperature than the heat generated from the heat fusion member 210 may be formed on the electrode lead 130. While being supported, the release of heat generated in the sealing part 121 is minimized. That is, when heat of the sealing unit 121 is excessively discharged at the initial stage of heat fusion, sealing property may be deteriorated, and thus heat release of the sealing unit 121 needs to be minimized.
이후, 열융착부재(210)에 의한 실링부(121)의 열융착 중기에는 제1 방열편(221)과 제2 방열편(222)이 모두 전극리드(130)에 지지되며, 이에 실링부(121)에 발생한 고열을 제1 방열편(221)과 제2 방열편(222)를 통해 외부로 신속하게 방출시켜서 과실링을 방지한다. 이때 제2 방열편(222)는 제1 방열편(221) 보다 낮은 온도를 가지기에 실링부(121)에 발생한 열을 보다 신속하게 외부로 방출할 수 있다.Subsequently, in the middle of the heat fusion of the sealing part 121 by the heat fusion member 210, both the first heat dissipation piece 221 and the second heat dissipation piece 222 are supported by the electrode lead 130, and thus the sealing part ( The high heat generated in the 121 is quickly discharged to the outside through the first heat dissipation piece 221 and the second heat dissipation piece 222 to prevent the sealing. In this case, since the second heat dissipation piece 222 has a lower temperature than the first heat dissipation piece 221, heat generated in the sealing part 121 may be more quickly discharged to the outside.
한편, 온도상승방지부재(220)는 열융착부재(210)가 실링부(121)를 열융착 함과 동시에 제1 방열편(221)이 전극리드(130)의 선단 일측면에 지지되고, 설정시간 후 제2 방열편(222)이 전극리드(130)의 선단 타측면에 지지되며, 이에 실링부(121)의 실링성을 더욱 높일 수 있다. On the other hand, the temperature increase preventing member 220 is heat-sealed member 210 is heat-sealed the sealing portion 121 and at the same time the first heat dissipation piece 221 is supported on one side of the front end of the electrode lead 130, After the time, the second heat dissipation piece 222 is supported on the other end surface of the electrode lead 130, thereby further improving the sealing property of the sealing part 121.
여기서 설정시간은 1~5초이며, 특히 3초일 수 있다. 즉, 열융착부재(210)는 가열된 상태로 실링부(121)를 압착하게 되는데, 이때 제1 방열편(221)이 전극리드(130)를 지지한 후 1초가 되기 전에 제2 방열편(222)이 전극리드(130)를 지지할 경우 실링부(121)가 실링되지 못한 상태로 열이 방출되면서 실링 불량이 발생할 수 있다. 그리고 제1 방열편(221)이 전극리드(130)를 지지한 후 5초가 넘어서 제2 방열편(222)이 전극리드(130)를 지지할 경우 실링부(121)가 과실링되면서 불량이 발생할 수 있다. 이에 제2 방열편(222)이 전극리드(130)를 지지한 후 1초~5초 내에 제2 방열편(222)을 전극리드(130)에 지지시키며, 이에 실링부(121)의 실링성 향상 및 과실링을 방지할 수 있다.Here, the setting time is 1 to 5 seconds, in particular 3 seconds. That is, the heat fusion member 210 compresses the sealing part 121 in a heated state. At this time, after the first heat dissipation piece 221 supports the electrode lead 130, the second heat dissipation piece ( When the 222 supports the electrode lead 130, heat may be released while the sealing part 121 is not sealed, and a sealing failure may occur. When the second heat dissipation member 222 supports the electrode lead 130 for more than 5 seconds after the first heat dissipation member 221 supports the electrode lead 130, the sealing part 121 may be oversealed, causing a defect. Can be. Accordingly, after the second heat dissipation piece 222 supports the electrode lead 130, the second heat dissipation piece 222 is supported on the electrode lead 130 within 1 second to 5 seconds, thereby sealing the sealing portion 121. Improvement and fruiting can be prevented.
한편, 온도상승방지부재(220)는 열융착이 완료되어 열융착부재(210)가 실링부(121)로부터 분리되더라도 1~5초간 더 전극리드(130)의 선단을 지지하여 방열한다. 즉, 열융착이 완료되더라도 실링부(121)에는 열이 남아 있으며, 이에 온도상승방지부재(220)는 실링부(121)에 남아 있는 열을 외부로 모두 방출하여 실링성을 높인다.On the other hand, the temperature rise preventing member 220 is heat-sealed by supporting the tip of the electrode lead 130 for 1 to 5 seconds even if the heat sealing is completed and the heat sealing member 210 is separated from the sealing portion 121. That is, even though the heat fusion is completed, heat remains in the sealing part 121, and thus the temperature increase preventing member 220 releases all of the heat remaining in the sealing part 121 to the outside to increase the sealing property.
한편, 열융착이 완료된 후 실링부(121)에 남아 있는 열을 신속하게 외부로 방출할 경우 실링부(121)가 급격하게 응고되면서 실링불량이 발생할 수 있다. 이에 실링부(121)가 서서히 응고될 수 있도록 온도상승방지부재(220)는 제2 발열편(222)을 먼저 전극리드(130)로부터 분리하고 설정시간 후 제1 방열편(221)을 전극리드(130)로부터 분리한다.On the other hand, if the heat remaining in the sealing portion 121 is quickly discharged to the outside after the heat fusion is completed, the sealing portion 121 is rapidly solidified may cause a sealing failure. Accordingly, the temperature increase preventing member 220 separates the second heat generating piece 222 from the electrode lead 130 first and the first heat dissipating piece 221 after the set time so that the sealing part 121 can gradually solidify. Separate from 130.
즉, 열융착부재(210)가 실링부(121)로부터 분리됨과 동시에 제2 방열편(222)은 전극리드(130)의 선단으로부터 분리되고, 제1 방열편(221)은 1~5초간 더 전극리드(130)의 선단을 지지하여 실링부(121)에 남아 있는 열의 과도한 방출을 방지하면서 실링부(121)가 서서히 응고되면서 유도한다. That is, the heat fusion member 210 is separated from the sealing portion 121 and at the same time the second heat dissipation piece 222 is separated from the tip of the electrode lead 130, the first heat dissipation piece 221 is further 1 to 5 seconds The sealing portion 121 is gradually solidified while supporting the tip of the electrode lead 130 to prevent excessive release of heat remaining in the sealing portion 121.
이와 같은 구성을 가지는 본 발명에 따른 이차전지용 실링장치는 전극리드가 구비된 전지케이스의 실링부가 과실링 및 절연 불량이 발생하는 것을 방지할 수 있다.The secondary battery sealing apparatus according to the present invention having such a configuration can prevent the sealing portion of the battery case provided with the electrode lead from the excessive sealing and insulation failure.
이하, 본 발명의 일실시예에 따른 이차전지용 실링장치의 사용 상태를 설명한다.Hereinafter, the state of use of the secondary battery sealing apparatus according to an embodiment of the present invention.
먼저, 도 3에 도시되어 있는 것과 같이, 전극리드(130)가 구비된 전지케이스(120)의 실링부(121)에 열융착부재(210)를 배치한다. 이와 동시에 전극리드(130)의 선단에 온도상승방지부재(220)를 배치한다. 즉, 온도상승방지부재(220)는 전극리드(130)의 상면과 하면에 각각 배치되는 제1 방열편(221)과 제2 방열편(222)으로 마련되는 한편, 제1 방열편(221)은 열융착부재(210)에서 발생하는 열 보다 낮은 온도를 가지고, 제2 방열편(222)은 제1 방열편(221) 보다 낮은 온도를 가진다. 여기서 제2 방열편(222)은 상온의 온도이거나 그 이하일 수 있다.First, as shown in FIG. 3, the heat sealing member 210 is disposed on the sealing part 121 of the battery case 120 provided with the electrode lead 130. At the same time, the temperature increase preventing member 220 is disposed at the tip of the electrode lead 130. That is, the temperature increase preventing member 220 is provided with a first heat dissipation piece 221 and a second heat dissipation piece 222 disposed on the top and bottom surfaces of the electrode lead 130, respectively, and the first heat dissipation piece 221. Silver has a temperature lower than the heat generated from the heat sealing member 210, the second heat dissipation piece 222 has a lower temperature than the first heat dissipation piece 221. Here, the second heat dissipation piece 222 may be at or below room temperature.
그런 다음, 도 4에 도시되어 있는 것과 같이, 열융착부재(210)에 의해 실링부(121)를 열융착하여 실링하며, 이와 동시에 온도상승방지부재(220)의 제1 방열편(221)이 전극리드(121) 상면에 지지되면서 실링부(121)에 발생하는 열을 전극리드(121)와 제1 방열편(221)을 통해 외부로 방출하여 실링부(121)를 냉각한다. Then, as shown in FIG. 4, the heat sealing member 121 is heat-sealed and sealed by the heat sealing member 210, and at the same time, the first heat dissipation piece 221 of the temperature increase preventing member 220 is The heat generated in the sealing part 121 while being supported on the upper surface of the electrode lead 121 is discharged to the outside through the electrode lead 121 and the first heat dissipation piece 221 to cool the sealing part 121.
그리고 도 5에 도시되어 있는 것과 같이, 열융착부재(210)가 실링부(121)를 열융착한 후 3초가 경과되면 제2 방열편(222)이 전극리드(121)의 하면에 지지되며, 이에 실링부(121)에 발생하는 고온의 열을 전극리드(121)와 제2 방열편(222)을 통해 신속하게 외부로 방출하여 실링부(121)를 냉각하며, 이에 실링부(121)의 과실링을 방지한다.As shown in FIG. 5, when 3 seconds have elapsed after the heat sealing member 210 heat-sealed the sealing part 121, the second heat dissipation piece 222 is supported on the lower surface of the electrode lead 121. Accordingly, the high temperature heat generated in the sealing part 121 is quickly discharged to the outside through the electrode lead 121 and the second heat dissipation piece 222 to cool the sealing part 121, and thus the sealing part 121 of the sealing part 121 Prevents overseals.
그리고 도 6에 도시되어 있는 것과 같이, 실링부(121)의 실링이 완료되면, 열융착부재(210)가 실링부(121)로부터 분리되며, 이와 동시에 제2 방열편(222)이 전극리드(130)로부터 분리되고, 이에 제1 방열편(221)은 1~5초간 더 실링부(121)에 발생한 열을 방열한다. 이는 실링부(121)에 남아 있는 열이 전부 외부로 방출되면 실링부(121)가 빠르게 응고되면서 실링성이 약화될 수 있기에 제1 방열편(221)을 통해 실링부(121)에 발생한 열을 외부로 방출한다.As shown in FIG. 6, when the sealing of the sealing part 121 is completed, the heat sealing member 210 is separated from the sealing part 121, and at the same time, the second heat dissipation piece 222 is the electrode lead ( 130, and thus the first heat dissipation piece 221 radiates heat generated in the sealing part 121 for 1 to 5 seconds. This is because if the heat remaining in the sealing portion 121 is released to the outside all the heat generated in the sealing portion 121 through the first heat dissipation piece 221 because the sealing portion 121 may be solidified quickly and the sealing property may be weakened. Release to the outside.
따라서 본 발명의 일실시예에 따른 이차전지용 실링장치(200)는 전극리드가 구비된 전지케이스의 실링부에 과실링 및 절연 불량이 발생하는 것을 방지할 수 있다.Therefore, the secondary battery sealing apparatus 200 according to the embodiment of the present invention can prevent the occurrence of the sealing and insulation failure in the sealing portion of the battery case provided with the electrode lead.
이하, 본 발명에 따른 이차전지용 실링장치의 다른 실시예를 설명함에 있어 전술한 실시예와 동일한 구성과 기능을 가진 구성에 대해서는 동일한 구성부호를 사용하며, 중복되는 설명은 생략한다.Hereinafter, in describing another embodiment of the sealing device for a secondary battery according to the present invention, the same reference numerals are used for components having the same configuration and function as the above-described embodiment, and redundant descriptions thereof will be omitted.
본 발명의 다른 실시예에 따른 이차전지용 실링장치(200')의 온도상승방지부재(220')는 도 7에 도시되어 있는 것과 같이, 전극리드(130)를 냉각함에 따라 발생하는 냉기로 실링부(121)를 냉각하는 냉각장치일 수 있으며, 상기 냉각장치는 구조에 의하여 크게 나누면 공랭식과 수랭식이 있다.As shown in FIG. 7, the temperature increase preventing member 220 ′ of the secondary battery sealing apparatus 200 ′ according to another exemplary embodiment of the present invention is a cold air sealing portion generated by cooling the electrode lead 130. It may be a cooling device for cooling the 121, and the cooling device is divided into air cooling and water cooling when divided into large.
즉, 냉각장치인 온도상승방지부재(220')는 전극리드(130)를 직접 냉각함으로써 전극리드(130)에 위치한 실링부(121)의 온도를 보다 효과적으로 냉각할 수 있으며, 특히 실링부(121)의 냉각 온도를 보다 세밀하고 균일하게 조절할 수도 있다.That is, the temperature increase preventing member 220 ′, which is a cooling device, can directly cool the electrode lead 130 to more effectively cool the temperature of the sealing part 121 located in the electrode lead 130, and in particular, the sealing part 121. Cooling temperature of) can be adjusted more precisely and uniformly.
이에, 본 발명의 다른 실시예에 따른 이차전지용 실링장치(200')는 전극리드(130)를 냉각함에 따라 발생하는 냉기로 실링부(121)를 냉각하는 온도상승방지부재(220')를 포함함으로써 전극리드(130)가 위치한 실링부(121)의 실링성은 높이고, 과실링은 효과적으로 방지할 수 있다.Thus, the secondary battery sealing apparatus 200 ′ according to another embodiment of the present invention includes a temperature increase preventing member 220 ′ cooling the sealing unit 121 with cold generated by cooling the electrode lead 130. As a result, the sealing property of the sealing unit 121 in which the electrode lead 130 is located may be improved, and the sealing may be effectively prevented.
본 발명의 범위는 상기 상세한 설명보다는 후술하는 특허청구범위에 의하여 나타내어지며, 특허청구범위의 의미 및 범위 그리고 그 균등 개념으로부터 도출되는 다양한 실시 형태는 본 발명의 범위에 포함되는 것으로 해석되어야 한다.The scope of the present invention is shown by the following claims rather than the above description, and various embodiments derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention.

Claims (10)

  1. 전극조립체에 결합된 전극리드가 위치한 전지케이스의 실링부를 실링하는 이차전지용 실링장치로서,A sealing device for secondary batteries that seals a sealing portion of a battery case in which an electrode lead coupled to an electrode assembly is located,
    상기 전극리드가 위치한 상기 전지케이스의 실링부에 열과 압력을 가하여 실링하는 열융착부재; 및A heat fusion member configured to seal by applying heat and pressure to a sealing portion of the battery case in which the electrode lead is located; And
    상기 전극리드의 선단에 지지되고, 상기 전극리드를 통해 상기 실링부를 냉각하여 상기 실링부의 온도상승을 방지하는 온도상승방지부재를 포함하는 것을 특징으로 하는 이차전지용 실링장치.And a temperature rise preventing member which is supported at the tip of the electrode lead and prevents the temperature rise of the sealing portion by cooling the sealing portion through the electrode lead.
  2. 청구항 1에 있어서,The method according to claim 1,
    상기 온도상승방지부재는 상기 전극리드를 통해 상기 실링부의 열을 외부로 방출하여 상기 실링부를 냉각하는 것을 특징으로 하는 이차전지용 실링장치.The temperature increase preventing member discharges heat of the sealing part to the outside through the electrode lead to cool the sealing part.
  3. 청구항 1에 있어서,The method according to claim 1,
    상기 온도상승방지부재는 상기 전극리드를 냉각함에 따라 발생하는 냉기로 상기 실링부를 냉각하는 것을 특징으로 하는 이차전지용 실링장치.The temperature increase preventing member is a sealing device for a secondary battery, characterized in that for cooling the sealing unit with a cold generated by cooling the electrode lead.
  4. 청구항 1에 있어서,The method according to claim 1,
    상기 온도상승방지부재는 상기 열융착부재 보다 낮은 온도로 상기 전극리드의 선단을 지지하는 것을 특징으로 하는 이차전지용 실링장치.The temperature increase preventing member is a sealing device for a secondary battery, characterized in that for supporting the front end of the electrode lead at a lower temperature than the heat sealing member.
  5. 청구항 1에 있어서,The method according to claim 1,
    상기 온도상승방지부재는 상기 전극리드의 선단 양측면을 각각 지지하는 제1 방열편 및 제2 방열편으로 마련되는 것을 특징으로 하는 이차전지용 실링장치.The temperature increase preventing member is a sealing device for a secondary battery, characterized in that provided with a first heat dissipation piece and a second heat dissipation piece respectively supporting the front end sides of the electrode lead.
  6. 청구항 5에 있어서,The method according to claim 5,
    상기 제1 방열편은 상기 열융착부재 보다 낮은 온도를 가지며,The first heat dissipation piece has a lower temperature than the heat seal member,
    상기 제2 방열편은 상기 제1 방열편 보다 낮은 온도를 가지는 것을 특징으로 하는 이차전지용 실링장치.The second heat dissipation piece has a lower temperature than the first heat dissipation piece, characterized in that the sealing device for a secondary battery.
  7. 청구항 5에 있어서,The method according to claim 5,
    상기 제1 방열편이 상기 전극리드의 선단 일측면을 지지하고, 설정시간 후 상기 제2 방열편이 상기 전극리드의 선단 타측면을 지지하는 것을 특징으로 하는 이차전지용 실링장치.And the first heat dissipation piece supports one end surface of the electrode lead, and the second heat dissipation piece supports the other end surface of the electrode lead after a set time.
  8. 청구항 7에 있어서,The method according to claim 7,
    상기 설정시간은 1~5초인 것을 것을 특징으로 하는 이차전지용 실링장치.The setting time is a secondary battery sealing device, characterized in that 1 to 5 seconds.
  9. 청구항 1에 있어서,The method according to claim 1,
    상기 온도상승방지부재는 상기 열융착부재가 상기 실링부로부터 분리된 후에 1~5초간 더 상기 전극리드의 선단을 지지하여 상기 실링부를 냉각하는 것을 특징으로 하는 이차전지용 실링장치.The temperature increase prevention member is a secondary battery sealing device, characterized in that for supporting the front end of the electrode lead for more 1 to 5 seconds after the heat sealing member is separated from the sealing portion to cool the sealing portion.
  10. 청구항 7에 있어서,The method according to claim 7,
    상기 열융착부재가 상기 실링부로부터 분리됨과 동시에 상기 제2 방열편은 상기 전극리드의 선단으로부터 분리되는 한편, 상기 제1 방열편은 1~5초간 더 상기 전극리드의 선단을 지지하여 상기 실링부를 냉각하는 것을 특징으로 하는 이차전지용 실링장치.The heat dissipation member is separated from the sealing portion, and the second heat dissipation piece is separated from the tip of the electrode lead, while the first heat dissipation piece supports the tip of the electrode lead for 1 to 5 seconds. Sealing device for a secondary battery, characterized in that the cooling.
PCT/KR2016/010936 2015-11-18 2016-09-29 Sealing device for secondary battery WO2017086593A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US15/736,475 US10559785B2 (en) 2015-11-18 2016-09-29 Sealing apparatus for secondary battery
PL16866546T PL3297057T3 (en) 2015-11-18 2016-09-29 Method for sealing a sealing part of a battery case
EP16866546.1A EP3297057B1 (en) 2015-11-18 2016-09-29 Method for sealing a sealing part of a battery case
CN201680037933.5A CN108292718B (en) 2015-11-18 2016-09-29 Sealing device for secondary battery
JP2018504189A JP6618608B2 (en) 2015-11-18 2016-09-29 Secondary battery sealing device

Applications Claiming Priority (4)

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KR20150162044 2015-11-18
KR10-2015-0162044 2015-11-18
KR10-2016-0122460 2016-09-23
KR1020160122460A KR101925090B1 (en) 2015-11-18 2016-09-23 Sealing apparatus of secondary battery

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010110686A (en) * 2000-01-26 2001-12-13 기타지마 요시토시 Heat seal device, heat seal method, embossing method, work pressing device, and work
KR20140039350A (en) * 2012-09-19 2014-04-02 주식회사 엘지화학 Battery module of improved cooling efficiency
KR20140089067A (en) * 2013-01-03 2014-07-14 삼성에스디아이 주식회사 Battery pack
KR20140090335A (en) * 2013-01-07 2014-07-17 에스케이이노베이션 주식회사 Pouch-type secondary battery with self-standing and heat dissipating capability and Supporting means for the same
KR20150045168A (en) * 2013-10-18 2015-04-28 (주)글로벌텍 Welding apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010110686A (en) * 2000-01-26 2001-12-13 기타지마 요시토시 Heat seal device, heat seal method, embossing method, work pressing device, and work
KR20140039350A (en) * 2012-09-19 2014-04-02 주식회사 엘지화학 Battery module of improved cooling efficiency
KR20140089067A (en) * 2013-01-03 2014-07-14 삼성에스디아이 주식회사 Battery pack
KR20140090335A (en) * 2013-01-07 2014-07-17 에스케이이노베이션 주식회사 Pouch-type secondary battery with self-standing and heat dissipating capability and Supporting means for the same
KR20150045168A (en) * 2013-10-18 2015-04-28 (주)글로벌텍 Welding apparatus

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