KR0132391Y1 - Seal structure for electrolysis liquid of lithium battery - Google Patents

Seal structure for electrolysis liquid of lithium battery Download PDF

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Publication number
KR0132391Y1
KR0132391Y1 KR2019950020512U KR19950020512U KR0132391Y1 KR 0132391 Y1 KR0132391 Y1 KR 0132391Y1 KR 2019950020512 U KR2019950020512 U KR 2019950020512U KR 19950020512 U KR19950020512 U KR 19950020512U KR 0132391 Y1 KR0132391 Y1 KR 0132391Y1
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KR
South Korea
Prior art keywords
electrolyte
sealing
ball
lithium battery
injection hole
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Application number
KR2019950020512U
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Korean (ko)
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KR970011264U (en
Inventor
서태종
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전형구
주식회사테크라프
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Priority to KR2019950020512U priority Critical patent/KR0132391Y1/en
Publication of KR970011264U publication Critical patent/KR970011264U/en
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Publication of KR0132391Y1 publication Critical patent/KR0132391Y1/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
    • H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
    • H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
    • H01M50/627—Filling ports
    • H01M50/636—Closing or sealing filling ports, e.g. using lids
    • 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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • 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
    • H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M6/00—Primary cells; Manufacture thereof
    • H01M6/14—Cells with non-aqueous electrolyte
    • 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

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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)
  • Primary Cells (AREA)
  • Filling, Topping-Up Batteries (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

본 고안은 리튬전지의 전해액 주입구를 테프론 볼과 스테인레스 스틸볼로 밀봉하는 밀봉구조에 관한 것으로, 전해액 주입구에 전해액을 주입한 후 1차적으로 테프론볼을 강제삽입하고 2차적으로 스테인레스 스틸볼을 용접하여 전해액 주입후 스테인레스 스틸볼의 밀봉까지 공정시간이 길어질 때 테프론 볼이 1차적인 밀봉효과를 제공하므로 수분의 이입 및 전해액의 증발이 방지된다.The present invention relates to a sealing structure for sealing an electrolyte injection hole of a lithium battery with a Teflon ball and a stainless steel ball. After injecting an electrolyte solution into the electrolyte injection hole, the Teflon ball is first inserted and the stainless steel ball is secondly welded. Teflon ball provides the primary sealing effect when the process time is long after sealing of the stainless steel ball after electrolyte injection, thereby preventing the introduction of moisture and the evaporation of the electrolyte solution.

Description

리튬 전지의 전해액 주입구 밀봉구조Sealing structure of electrolyte injection hole of lithium battery

제1도는 본 고안의 전해액 주입구 밀봉구조를 도시하는 단면도이다.1 is a cross-sectional view showing the electrolyte injection hole sealing structure of the present invention.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 양극집전체 2 : 음극활물질1: positive electrode current collector 2: negative electrode active material

3 : 케이스 4 : 절연체3: case 4: insulator

5 : 헤드 6 : 양극리드5: head 6: anode lead

7 : 그래스 메탈실링 8 : 전해액 주입구7: grass metal sealing 8: electrolyte injection hole

9 : 테프론 볼 10 : 스테인레스 스틸볼9: teflon ball 10: stainless steel ball

본 고안은 리튬전지의 전해액 주입구를 테프론 볼과 스테인레스 스틸볼로 밀봉하는 밀봉구조에 관한 것이다.The present invention relates to a sealing structure for sealing the electrolyte injection hole of the lithium battery with a Teflon ball and a stainless steel ball.

리튬전지는 양극 활물질과 음극활물질, 세퍼레이터 및 양극 집전체로 된 내부구조와 헤드조립체 케이스의 일체형으로 된 외부구조로 구성되어 있다. 헤드 조립체에는 중앙에 리드선을 헤드와 그래스 메탈 실링한 양극이 있고 양극과 가장자리 사이에 전해액 주입구가 있어 전해액 주입구를 통하여 비수 전해액을 주입한 후 스틸볼로 밀봉하게 되어 있다. 여기서 사용되는 비수 전해액은 흡습력이 우수하여 밀봉전까지 공정이동 시간이나 밀봉의 불완전성으로 인하여 수분의 이입이 생기게 되어 전지의 불안정 및 전압강하, 품질저하로 인한 보관성에 문제가 있었다.The lithium battery is composed of an internal structure of a positive electrode active material, a negative electrode active material, a separator, and a positive electrode current collector, and an external structure of a single head assembly case. The head assembly has a positive electrode in the center of the lead wire and the glass metal sealing, and there is an electrolyte injection hole between the positive electrode and the edge to inject a nonaqueous electrolyte through the electrolyte injection hole and seal the steel ball. The non-aqueous electrolyte used herein has excellent hygroscopicity, resulting in the introduction of moisture due to process movement time or sealing imperfection before sealing, resulting in problems with storage stability due to battery instability, voltage drop, and quality deterioration.

본 고안의 목적은 상기와 같은 문제점을 해결하기 위하여 전해액 주입구에 테프론 볼과 스테인레스 스틸볼을 사용하여 밀봉시켜 전지의 안정성이 보장되어 전입강하의 방지와 장기 보관성능을 향상시키는 리튬전지의 전해액 주입구 밀봉구조를 제공하고자 하는 것이다.The purpose of the present invention is to seal the electrolyte inlet using a Teflon ball and stainless steel ball to solve the problems described above to ensure the stability of the battery to prevent the drop in the electrolyte and improve the long-term storage performance of the electrolyte inlet seal To provide a structure.

본 고안을 첨부된 도면을 참조하여 하기에 설명한다.The present invention will be described below with reference to the accompanying drawings.

도면에는 본 고안의 전해액 주입구 밀봉구조가 도시되는데, 리튬전지의 내부는 양극집전체(1)와 음극 활물질(2)이 절연지를 사이에 두고 감겨져서 케이스(3)내부에 삽입되고 양극집전체(1)와 음극활물질(2)의 상하에는 절연체(4)로 절연된다. 케이스(3)의 상부에는 헤드(5)가 고정되고 헤드(5)의 중앙에는 양극리드(6)가 그래스 메틸실링(7)에 의해서 고정된다. 헤드(5)의 일측에는 전해액 주입구(8)가 형성되어 있다.In the drawings, the electrolyte injection hole sealing structure of the present invention is shown. The inside of the lithium battery is wound around the positive electrode current collector 1 and the negative electrode active material 2 with an insulating paper interposed therebetween and inserted into the case 3, and the positive electrode current collector ( 1) and the negative electrode active material 2 are insulated by the insulator 4 above and below. The head 5 is fixed to the upper part of the case 3 and the anode lead 6 is fixed to the center of the head 5 by the glass methyl sealing 7. An electrolyte injection hole 8 is formed at one side of the head 5.

본 고안의 전해액 주입구 밀봉구조는 전해액 주입구(8)에 전해액을 주입한 후 1차적으로 테프론이나 폴리에틸렌 볼(9)을 전해액 주입구(8)에 강제 삽입하여 외부공기와 접촉을 차단하고, 2차적으로 스테인레스 스틸볼(10)을 용접하여 완전밀봉하여 이루어진다.In the electrolyte injection hole sealing structure of the present invention, after injecting the electrolyte solution into the electrolyte injection hole 8, the Teflon or polyethylene ball 9 is forcedly inserted into the electrolyte injection hole 8 to block contact with external air, and The stainless steel ball 10 is welded and completely sealed.

본 고안의 테프론 볼(9)은 헤드(5)의 전해액 주입구(8)보다 큰 직경으로 가공되어 전해액 주입구(8)에 강제 삽입되고, 테프론 볼(9)은 그 탄성으로 전해액 주입구 안쪽 끝부분에 박혀 있게 된다.The Teflon ball 9 of the present invention is processed into a larger diameter than the electrolyte injection hole 8 of the head 5 and is forcibly inserted into the electrolyte injection hole 8, and the Teflon ball 9 is elastically attached to the inner end of the electrolyte injection hole. It becomes lodged.

상기와 같이 본 고안의 테프론 볼(9)이 1차 밀봉된 전지를 장시간 보관 후에 스테인레스 스틸볼(10)을 밀봉하여도 수분과의 반응에 대한 불안정, 전압강하, 전해액의 증발현상을 줄일 수 있어 스테인레스 스틸볼의 완전밀봉성에 대한 불안감을 해소시켜 품질을 향상시킬 수 있다.As described above, even if the Teflon ball 9 of the present invention is sealed to the stainless steel ball 10 after long-term storage of the battery, the instability, voltage drop, and evaporation of the electrolyte may be reduced. The quality can be improved by relieving the anxiety about the stainless steel ball's complete sealing.

상기와 같이 구성된 본 고안의 리튬전지의 전해액 주입구 밀봉구조는 전해액 주입후 스테인레스 스틸볼의 밀봉까지 공정시간이 길어질 때 테프론 볼이 1차적인 밀봉효과를 제공하므로 수분의 이입 및 전해액의 증발을 방지하는 효과를 제공한다. 더욱이 본 고안의 밀봉구조는 스테인레스 스틸볼의 용접이 완벽하지 못하거나 전지내부의 단락 및 화학반응으로 내부압력 팽창시에도 밀봉효과를 제공한다.The electrolyte injection port sealing structure of the lithium battery of the present invention configured as described above prevents the introduction of moisture and the evaporation of the electrolyte solution because the Teflon ball provides a primary sealing effect when the process time increases from the electrolyte injection to the sealing of the stainless steel ball. Provide effect. Furthermore, the sealing structure of the present invention provides a sealing effect even when the welding of stainless steel balls is not perfect or when internal pressure is expanded due to short circuit and chemical reaction in the battery.

Claims (1)

헤드(5)에 전해액 주입구(8)가 형성되어 있는 리튬전지에 있어서, 전해액 주입구(8)에 전해액을 주입한 후 1차적으로 테프론볼(9)이 강제삽입되고 2차적으로 스테인레스 스틸볼(10)이 용접되게 구성된 리튬전지의 전해액 주입구 밀봉구조.In the lithium battery in which the electrolyte inlet 8 is formed in the head 5, after injecting the electrolyte into the electrolyte inlet 8, the Teflon ball 9 is forcedly inserted into the stainless steel ball 10. ) Electrolyte injection hole sealing structure of a lithium battery configured to be welded.
KR2019950020512U 1995-08-09 1995-08-09 Seal structure for electrolysis liquid of lithium battery KR0132391Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019950020512U KR0132391Y1 (en) 1995-08-09 1995-08-09 Seal structure for electrolysis liquid of lithium battery

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Application Number Priority Date Filing Date Title
KR2019950020512U KR0132391Y1 (en) 1995-08-09 1995-08-09 Seal structure for electrolysis liquid of lithium battery

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KR970011264U KR970011264U (en) 1997-03-29
KR0132391Y1 true KR0132391Y1 (en) 1998-12-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100951906B1 (en) * 2007-11-19 2010-04-09 삼성에스디아이 주식회사 Cap assembly and scondary battery using the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100951906B1 (en) * 2007-11-19 2010-04-09 삼성에스디아이 주식회사 Cap assembly and scondary battery using the same
US8263245B2 (en) 2007-11-19 2012-09-11 Samsung Sdi Co., Ltd. Cap assembly and secondary battery using the same

Also Published As

Publication number Publication date
KR970011264U (en) 1997-03-29

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