KR20030069767A - Manufacturing Method of a lithium thionyl chloride battery with a single separator - Google Patents

Manufacturing Method of a lithium thionyl chloride battery with a single separator Download PDF

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Publication number
KR20030069767A
KR20030069767A KR1020020053112A KR20020053112A KR20030069767A KR 20030069767 A KR20030069767 A KR 20030069767A KR 1020020053112 A KR1020020053112 A KR 1020020053112A KR 20020053112 A KR20020053112 A KR 20020053112A KR 20030069767 A KR20030069767 A KR 20030069767A
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separator
battery
manufacturing
lithium
lithium thionyl
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KR1020020053112A
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Korean (ko)
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조승옥
김상욱
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(주)에너렉스
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Publication of KR20030069767A publication Critical patent/KR20030069767A/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
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/403—Manufacturing processes of separators, membranes or diaphragms
    • 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
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/133—Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H01M4/139—Processes of manufacture
    • H01M4/1395—Processes of manufacture of electrodes based on metals, Si or alloys
    • 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
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/463—Separators, membranes or diaphragms characterised by their shape
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
    • 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
    • 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

Abstract

PURPOSE: A method for preparing a lithium thionyl chloride battery integrated with a separator in one body is provided, to prevent a short circuit due to the leakage of current between positive and negative electrodes, thereby preventing the shortening of lifetime of a battery. CONSTITUTION: A separator which is an insulator between a negative electrode lithium and a positive electrode carbon, wherein the two electrodes are formed inside the case of a battery and the positive electrode carbon is charged with an electrolyte solution, is prepared by: winding a separator material circularly to prepare a cylindrical shape whose both ends are open; and gathering and the end part of the separator and adhering the gathered end with an adhesive to seal the open bottom part.

Description

세퍼레이터 일체형 리튬 티오닐 크로라이드전지 제조방법 {Manufacturing Method of a lithium thionyl chloride battery with a single separator }Manufacturing method of a lithium thionyl chloride battery with a single separator}

본 발명은 세퍼레이터 일체형 리튬 티오닐 크로라이드전지 제조방법에 관한 것으로서, 보다 상세하게는 건전지 제조공정에서 양극과 음극을 분리시키는 세퍼레이터를 일체화하여 제조하여 완전 밀봉 제조가 가능토록 하여 양/음극간의 전류누수에 의한 단락 현상을 방지하여 건전지의 수명이 단축되는 것을 방지할수 있을 뿐만 아니라 제조공정의 단순화로 인해 생산성이 향상될수 있는 세퍼레이터 일체형 리튬 티오닐 크로라이드전지 제조방법에 관한 것이다.The present invention relates to a method of manufacturing a separator-integrated lithium thionyl chromide battery, and more particularly, to integrate a separator that separates a positive electrode and a negative electrode in a battery manufacturing process so that a completely sealed manufacturing is possible so that current leakage between positive and negative electrodes is possible. The present invention relates to a method for manufacturing a separator-integrated lithium thionyl chromide battery which can prevent short circuiting by preventing shortening of the battery life and improve productivity due to a simplification of the manufacturing process.

주지된 바와 같이 휴대용 전기용품의 에너지원으로 사용되는 건전지로는, 망간전지, 알칼리전지, 리튬전지등 많은 종류의 전지가 사용되고 있다.As is well known, as a battery used as an energy source for portable electric appliances, many kinds of batteries such as manganese batteries, alkaline batteries, and lithium batteries are used.

종래의 리튬 티오닐 크로라이드전지는 도1에 도시된 바와같이 건전지의 외부케이스용기(1)와 그 내부에 음극리튬(2)과 양극카본(4)이 형성되고,위 음극리튬(2)과 양극카본(4)간에는 전기적 절연물인 원통형의 측면 세퍼레이터(3)가 구비되며 건전지 내부 하측에는 전기적 절연체(5)가 구성되고 상기 전기적 절연체(5)와 양극카본(4)간에는 저부 세퍼레이터(3-1)가 구비되어 있으며, 상기 양극카본(4)에는 집전봉(6)이 형성되어 있는 구조로 이루어져 있다.In the conventional lithium thionyl chromide battery, as shown in FIG. 1, an outer case container 1 of a battery and an anode lithium 2 and an anode carbon 4 are formed therein, and the anode lithium 2 and A cylindrical side separator (3) is provided between the anode carbon (4) and an electrical insulator (5) is formed on the lower side inside the battery, and the bottom separator (3-1) between the electrical insulator (5) and the anode carbon (4). ) Is provided, and the positive electrode carbon 4 has a structure in which a current collecting rod 6 is formed.

이와같은 구조로 이루어진 종래의 리튬 티오닐 크로라이드전지는 양극카본(4)에서 발생되는 전류가 음극리튬(2)으로 흐르도록 양단간에는 소정 전압이 발생하도록 되어 있으나 보빈타입(BOBBIN TYPE)의 경우 양극 합제물을 성형하여 사용하게 되는데, 사용재료의 특성상 성형물의 가루가 존재하게 되고 이로인해 분리된 미세분말가루는 세퍼레이터(3)나 절연체(5)로 이동되어 순간단락 및 미세단락의 원인이 되어 건전지의 사용 수명을 단축시키는 주 요인으로 작용하여 왔다.In the conventional lithium thionyl chromide battery having such a structure, a predetermined voltage is generated between both ends so that a current generated in the positive electrode carbon 4 flows to the negative electrode lithium 2, but in the case of a bobbin type, the positive electrode The mixture is molded and used. Due to the nature of the material used, the powder of the molded product is present, and thus the separated fine powder is moved to the separator (3) or the insulator (5), causing a short circuit and a micro short circuit. Has been a major factor in shortening the service life of the.

다시말해, 종래의 건전지 제조에 있어서는 측면의 원통형 세퍼레이터(3) 및 저면의 저부 세퍼레이터(3-1)와 저면의 절연체(5)가 별개의 공정으로 분리 제조되어 접합부에 미세간극이 발생되기 쉽고 양극카본 가루분말이 미세간극등에 이동될 경우에는 순간 단락의 원인이 되어 건전지의 수명을 단축하거나 안전성의 문제점을 내포하여 왔다.In other words, in the conventional battery manufacturing, the cylindrical separator 3 on the side and the bottom separator 3-1 on the bottom and the insulator 5 on the bottom are separately manufactured in a separate process, so that a microgap is likely to occur at the junction. When the carbon powder is moved in the micro-gap or the like, it may cause a short circuit and may shorten the life of the battery or may cause safety problems.

본 발명은 상기 문제점을 해결하기 위해 창안된 것으로서, 본 발명의 목적은건전지 제조공정에서 양극과 음극을 분리시키는 세퍼레이터를 일체화하여 제조하여완전 밀봉 제조가 가능토록 하여 양/음극간의 전류누수에 의한 단락 현상을 방지하여 건전지의 수명이 단축되거나 안전상의 문제점을 제거할수 있으며, 또한 제조공정을 단순화하여 생산성을 향상시킬수 있는 세퍼레이터 일체형 리튬 티오닐 크로라이드전지 제조방법을 제공하는데 있다.The present invention was devised to solve the above problems, and an object of the present invention is to integrate a separator that separates the positive electrode and the negative electrode in a battery manufacturing process so that a complete sealing can be made and a short circuit is caused by current leakage between the positive and negative electrodes. The present invention provides a method of manufacturing a separator-integrated lithium thionyl chromide battery that can reduce the lifespan of a battery and eliminate safety problems, and improve productivity by simplifying a manufacturing process.

상기 목적을 달성하기 위한 본 발명은, 건전지의 케이스용기와 그 내부에 음극리튬과 양극카본이 형성되고, 위 양극카본에는 전해액이 충진된 건전지에 있어 상기 음극리튬과 양극카본간에 전기적 절연물인 세퍼레이터를 형성시키는 방법에 있어서, 상기 세퍼레이터 재료를 원형으로 말아 양끝단부가 개방된 원통형으로 제조하는 공정과, 상기 공정후 개방된 저면부를 밀봉시키기 위해 세퍼레이터 끝단부를 당접시켜 접착제로 접합하는 공정으로 이루어지는 것을 특징으로 한다.The present invention for achieving the above object, the case of the battery case and the negative electrode lithium and the positive carbon is formed in the inside, the positive carbon is a separator which is an electrical insulation between the negative electrode lithium and the positive carbon in the battery filled with the electrolyte solution In the forming method, the separator material is rolled into a circular shape to produce a cylindrical shape with both ends open, and after the step, the separator end is contacted with an adhesive to seal the open bottom surface. do.

도 1은 일반적인 리튬 티오닐 크로라이드전지를 도시한 단면도이고,1 is a cross-sectional view showing a typical lithium thionyl chromide battery,

도 2는 본 발명의 세퍼레이터 일체형 리튬 티오닐 크로라이드전지 제조방법으로 제조된 리튬 티오닐 크로라이드전지의 단면도이고,2 is a cross-sectional view of a lithium thionyl chromide battery manufactured by the method of manufacturing a separator-integrated lithium thionyl chromide battery of the present invention.

도3은 본 발명에 있어 일체형 세퍼레이터 제조공정을 나타내는 공정도이다.3 is a process chart showing an integrated separator manufacturing process in the present invention.

이하, 첨부된 도면에 의거하여 본 발명의 세퍼레이터 일체형 리튬 티오닐 크로라이드전지 제조방법을 설명한다.Hereinafter, a separator-integrated lithium thionyl chromide battery manufacturing method of the present invention will be described with reference to the accompanying drawings.

도 2는 본 발명의 세퍼레이터 일체형 리튬 티오닐 크로라이드전지 제조방법으로 제조된 리튬 티오닐 크로라이드전지의 단면도이고, 도3은 본 발명에 있어 일체형 세퍼레이터 제조공정을 나타내는 공정도이다.FIG. 2 is a cross-sectional view of a lithium thionyl chloride battery manufactured by the method of manufacturing a separator-integrated lithium thionyl chloride battery of the present invention, and FIG. 3 is a process diagram showing a process of manufacturing an integrated separator in the present invention.

본 발명의 세퍼레이터 일체형 리튬 티오닐 크로라이드전지 제조방법을 설명함에 있어 종래의 건전지 제조방법과 동일한 공정은 생략키로 한다.In describing the separator-integrated lithium thionyl chromide battery manufacturing method of the present invention, the same steps as those of the conventional battery manufacturing method will be omitted.

건전지를 제조함에 있어 외부에 건전지의 케이스용기를 형성하고 그 내부에 음극리튬과 양극카본이 형성시키며, 위 양극카본에는 전해액을 충진함과 아울러 상기 음극리튬과 양극카본간에 전기적 절연물인 세퍼레이터를 형성시키게 된다.In manufacturing a battery, a case container of the battery is formed on the outside, and a cathode lithium and a cathode carbon are formed therein, and the cathode is filled with an electrolyte, and a separator, which is an electrical insulator, is formed between the cathode lithium and the cathode carbon. do.

본 발명에서는 양극과 음극간을 절연시키는 세퍼레이터를 일체로 하는 것을 특징으로 하고 있는데, 즉 세퍼레이터 재료를 적정크기로 절단한후 원형으로 말아 양끝단부를 접착시키게 된다.The present invention is characterized by integrating a separator that insulates the positive electrode from the negative electrode. That is, the separator material is cut to an appropriate size and rolled in a circular shape to bond both ends thereof.

양끝단부가 개방된 원통형의 세퍼레이터의 개방된 저면부를 밀봉시키기 위해 세퍼레이터 끝단부를 안쪽으로 말아 상호 당접시켜 접착제로 접합하게 되면 세퍼레이터가 일체로 형성되어 진다.In order to seal the open bottom part of the cylindrical separator with both ends open, the separator ends are rolled inward and abutted to each other to be bonded with an adhesive, thereby forming the separator integrally.

이와같이 일체로된 세퍼레이터를 건전지 내부에 안착한후 양극카본을 그 내측에 위치시켜 건전지를 성형하게 된다.In this way, the integrated separator is seated inside the battery, and the positive carbon is positioned inside the battery to form the battery.

상기 성형공정이 종료되면 양극카본 내로 전해액을 주입하게 되면 본 발명의 세퍼레이터 일체형 리튬전지 제조가 완성된다.When the molding process is completed, when the electrolyte is injected into the cathode carbon, the separator-integrated lithium battery of the present invention is completed.

이상에서와 같이 본 발명의 세퍼레이터 일체형 리튬전지 제조방법에 의하면, 건전지 제조공정에서 양극과 음극을 분리시키는 세퍼레이터를 일체화하여 제조하여 완전 밀봉 제조가 가능토록 하여 양/음극간의 전류누수에 의한 단락현상을 방지하여 건전지의 수명이 단축되거나 안전상의 문제점을 제거할수 있으며, 또한 제조공정을 단순화하여 생산성을 향상시킬수 있는 효과를 지니고 있다.As described above, according to the method of manufacturing a separator-integrated lithium battery of the present invention, in a battery manufacturing process, a separator that separates a positive electrode and a negative electrode is integrally manufactured so that a completely sealed manufacturing is possible, and thus a short circuit phenomenon may occur due to leakage of current between the positive and negative electrodes. It can reduce the lifespan of the battery or eliminate the safety problem, and it has the effect of improving the productivity by simplifying the manufacturing process.

Claims (1)

건전지의 케이스용기와 그 내부에 음극리튬과 양극카본이 형성되고, 위 양극카본에는 전해액이 충진된 건전지에 있어 상기 음극리튬과 양극카본간에 전기적 절연물인 세퍼레이터를 형성시키는 방법에 있어서,In a method of forming a separator which is an electrical insulator between the cathode lithium and the anode carbon in the battery case container and the cathode lithium and the anode carbon is formed, the anode carbon in the battery filled with the electrolyte, 상기 세퍼레이터 재료를 원형으로 말아 양끝단부가 개방된 원통형으로 제조하는 공정과, 상기 공정후 개방된 저면부를 밀봉시키기 위해 세퍼레이터 끝단부를 당접시켜 접착제로 접합하는 공정으로 이루어 지는 것을 특징으로 하는 세퍼레이터 일체형 리튬전지 제조방법.Rolling the separator material in a circular shape to produce a cylindrical shape in which both ends are open, and a step of contacting the separator end with an adhesive to seal the bottom surface opened after the step, and bonding the separator material with an adhesive. Manufacturing method.
KR1020020053112A 2002-09-04 2002-09-04 Manufacturing Method of a lithium thionyl chloride battery with a single separator KR20030069767A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104733738A (en) * 2015-03-25 2015-06-24 武汉孚安特科技有限公司 Preparation method of lithium thionyl chloride power type battery positive electrode

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6014754A (en) * 1983-07-06 1985-01-25 Sanyo Electric Co Ltd Manufacture of tubular separator
KR880000936A (en) * 1986-06-17 1988-03-30 이반 밀러 레르너 Recorder
JPH0374048A (en) * 1989-08-11 1991-03-28 Sanyo Electric Co Ltd Square battery
JPH0434840A (en) * 1990-05-29 1992-02-05 Sanyo Electric Co Ltd Enclosed type battery
US6177210B1 (en) * 1999-05-20 2001-01-23 Eveready Battery Company, Inc. Separator for electrochemical cell and method of assembly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6014754A (en) * 1983-07-06 1985-01-25 Sanyo Electric Co Ltd Manufacture of tubular separator
KR880000936A (en) * 1986-06-17 1988-03-30 이반 밀러 레르너 Recorder
JPH0374048A (en) * 1989-08-11 1991-03-28 Sanyo Electric Co Ltd Square battery
JPH0434840A (en) * 1990-05-29 1992-02-05 Sanyo Electric Co Ltd Enclosed type battery
US6177210B1 (en) * 1999-05-20 2001-01-23 Eveready Battery Company, Inc. Separator for electrochemical cell and method of assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104733738A (en) * 2015-03-25 2015-06-24 武汉孚安特科技有限公司 Preparation method of lithium thionyl chloride power type battery positive electrode
CN104733738B (en) * 2015-03-25 2017-03-15 武汉孚安特科技有限公司 A kind of lithium-thionyl chloride power type battery anode preparation method

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