KR100396488B1 - Joining method of lead terminal of lithium ion battery - Google Patents

Joining method of lead terminal of lithium ion battery Download PDF

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Publication number
KR100396488B1
KR100396488B1 KR1019960016152A KR19960016152A KR100396488B1 KR 100396488 B1 KR100396488 B1 KR 100396488B1 KR 1019960016152 A KR1019960016152 A KR 1019960016152A KR 19960016152 A KR19960016152 A KR 19960016152A KR 100396488 B1 KR100396488 B1 KR 100396488B1
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KR
South Korea
Prior art keywords
lead terminal
lithium ion
ion battery
positive
joining
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KR1019960016152A
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Korean (ko)
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KR970077782A (en
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전광열
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삼성에스디아이 주식회사
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Publication of KR970077782A publication Critical patent/KR970077782A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/03—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of sheet metal otherwise than by folding
    • B21D39/031—Joining superposed plates by locally deforming without slitting or piercing
    • 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
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

PURPOSE: A method for joining a lead terminal to the positive and negative electrode plates of a lithium ion battery is provided, to simplify the construction of equipment by using pressing and sintering deformation. CONSTITUTION: The method comprises the steps of placing positive and negative electrode plates(1) on the upper face of a die(3) having a certain shape, and pressing a punch combined with the die from the upper side of a lead terminal to form a groove(3a) by sintering deformation, thereby joining the lead terminal to the positive and negative electrode plates by the binding force at the groove part(3a). Preferably the punch is pressed by using a hydraulic cylinder.

Description

리튬 이온 전지의 리드 단자 접합방법Lead terminal bonding method of lithium ion battery

[산업상의 이용분야][Industrial use]

본 발명은 리튬 이온 전지의 리드 단자 접합방법에 관한 것으로서, 보다 상세하게는 가압, 소성변형을 이용하여 리튬 이온 전지의 극판에 리드 단자를 접합시키는 방법에 관한 것이다.The present invention relates to a method for joining lead terminals of a lithium ion battery, and more particularly, to a method of joining lead terminals to a pole plate of a lithium ion battery using pressure and plastic deformation.

[종래의 기술 및 발명이 해결하고자 하는 문제점][Problems to be Solved by Conventional Technology and Invention]

잘 알려진 바와 같이 리튬 이온 전지는, 리튬으로 만든 전지로서 망간 전지나 수은 전지에 비교해서 수명이 현저하게 긴 장점이 있어 컴퓨터 등의 정전 유지에 적합한 전지로 알려져 있다.As is well known, a lithium ion battery is a battery made of lithium, and has a remarkably long life compared with a manganese battery or a mercury battery, and is known as a battery suitable for maintaining static electricity in computers and the like.

이러한 리튬 이온 전지 역시, 타 전지와 마찬가지로 그 구성에 양,음극판을포함하고 있는 바, 이때, 이 양,음극판에는 리드 단자 즉, 전지의 작용시 양,음극판에서 발생된 전류를 집전하기 위한 역할로서 탭이 각기 부착되게 된다.Like other batteries, the lithium ion battery also includes a positive and negative electrode in its configuration, and the positive and negative electrode have a lead terminal, that is, a role for collecting current generated in the positive and negative electrode plates during the action of the battery. Each tab will be attached.

한편, 리튬 이온 전지의 양,음극판은 다른 전지와는 달리 박판으로 이루어지게 되는데, 이 박판의 양,음극판에 상기한 리드 단자를 접합시키기 위하여 종래에는 주로 전기 저항 용접방법이나 초음파 용접방법을 사용하였다.On the other hand, the positive electrode and the negative electrode of the lithium ion battery is made of a thin plate, unlike other batteries, in order to bond the lead terminal to the positive and negative plate of the thin plate in the prior art mainly used the electric resistance welding method or ultrasonic welding method. .

그러나, 상기한 방법에서는 다음과 같은 문제점이 발생됨에 따라 리튬 이온 전지의 극판에 리드 단자를 접합시키는 작업을 효율적으로 이루지 못하고 있는 실정이다.However, in the above-described method, the following problem occurs, and thus the situation in which the lead terminal is not efficiently bonded to the electrode plate of the lithium ion battery is not achieved.

즉, 전기 저항 용접방법에서는, 용접시 발생되는 스파크로 인하여 전극이 쉽게 마모될 뿐만 아니라 전극봉의 관리가 어려워 작업상의 불편함이 초래되고 있다.That is, in the electric resistance welding method, not only the electrode easily wears out due to the spark generated during welding, but also the electrode is difficult to manage, resulting in inconvenience in operation.

또한, 초음파 용접방법에서는 용접장치가 고가인 관계로 투자비용이 높기 때문에 설비 투자에 부담이 있을 뿐더러, 용접장치에 사용되는 혼(horn) 및 앤빌(anvil)의 잦은 교체로 이에 따른 비용의 부담이 발생되고 있다.In addition, in the ultrasonic welding method, the investment cost is high due to the high cost of the welding device, and there is a burden on the facility investment. Also, the frequent cost of the horn and anvil used in the welding device is a burden. It is occurring.

[문제점을 해결하기 위한 수단][Means to solve the problem]

따라서, 본 발명은 상기와 같은 문제점을 해소하기 위하여 안출된 것으로서, 소성 변형에 의한 결합으로 리튬 이온 전지의 극판과 리드 단자를 상호 접합시킴으로써, 초기 설비 투자비 및 생산비의 절감을 이룰 수 있는 리튬 이온 전지의 리드 단자 접합방법을 제공함에 그 목적이 있다.Accordingly, the present invention has been made to solve the above problems, by bonding the electrode plate and the lead terminal of the lithium ion battery by bonding by plastic deformation, the lithium ion battery which can achieve the initial equipment investment cost and production cost reduction Its purpose is to provide a method for joining the lead terminals.

이에, 본 발명은 상기 목적을 실현하기 위하여,Accordingly, the present invention to realize the above object,

리튬 이온 전지가 보유하는 양,음극 극판에 리드 단자를 접합하는 리튬 이온전지의 리드 단자 접합방법에 있어서,In a method of joining a lead terminal of a lithium ion battery in which a lead terminal is bonded to a positive and negative electrode plate held by a lithium ion battery,

상기 양,음극에 해당하는 극판을 소정의 형상을 갖는 다이의 상면에 안착시키고, 상기 극판의 상면으로 리드 단자를 안착시킨 상태에서, 상기 리드 단자의 상측으로부터 상기 다이와 결합되는 펀치를 가압하여 이루게 되는 리튬 이온 전지의 리드 단자 접합방법을 제공한다.The positive and negative electrode plates are seated on an upper surface of a die having a predetermined shape, and in a state where the lead terminals are seated on an upper surface of the electrode plate, a punch coupled to the die is pressed from an upper side of the lead terminal. Provided is a method for joining a lead terminal of a lithium ion battery.

이때, 상기 펀치의 가압은 유압 실린더로 이루게 된다.At this time, the pressing of the punch is made of a hydraulic cylinder.

[실시예]EXAMPLE

이하, 첨부된 도면에 의거하여 본 발명의 바람직한 실시예를 설명한다.Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

제1도는 본 발명에 따라 리튬 이온 전지를 구성하는 양,음극 극판에 리드 단자를 접합하기 위한 접합장치를 개략적으로 도시한 구성도로서, 본 발명에서 상기 접합장치는 상기 양극 또는 음극 극판(1)과 리드 단자(3)가 소성 변형되면서 상호 접합될 수 있도록 구성되고 있다.1 is a schematic view showing a bonding apparatus for joining a lead terminal to a positive and negative electrode plate constituting a lithium ion battery according to the present invention, wherein the bonding device in the present invention is the positive or negative electrode plate (1) And the lead terminal 3 are configured to be bonded to each other while plastically deformed.

즉, 상기 접합장치에는 상기 극판(1)이 그 상면으로 배치되는 다이(5)가 구비되며, 이 다이의 상측으로는 소정의 상,하 구동수단 즉, 유압 실린더(7)에 의해 상,하 구동되어 상기 다이(3)와 결합되는 펀치(9)가 배치되어 있다.That is, the bonding apparatus is provided with a die 5 in which the pole plate 1 is disposed on an upper surface thereof, and the upper and lower driving means, that is, the hydraulic cylinder 7, are moved upward and downward on the upper side of the die. A punch 9 is arranged which is driven and engaged with the die 3.

이에, 상기 접합장치를 이용하여 상기 극판(1)과 리드 단자(3)를 상호 접합시키기 위해 작업자는 우선, 상기 다이(5)의 상면으로 상기 극판(1)을 배치시킨 다음, 이 극판(1)의 상면으로는 접합시키고자 하는 리드 단자(3)를 접합 부위 다시 말해, 상기 펀치(9)와 다이(5)와의 결합 부위에 배치시키게 된다.Thus, in order to bond the pole plate 1 and the lead terminal 3 to each other using the bonding apparatus, the operator first places the pole plate 1 on the upper surface of the die 5 and then the pole plate 1 The lead terminal 3 to be bonded is placed at the joining site, that is, at the joining site of the punch 9 and the die 5, on the upper surface of the back panel).

상기 상태가 완료되면, 그 다음으로 작업자는 상기 유압 실린더(7)를 작동하여 상기 펀치(9)를 상기 다이(5)에 결합시키면서 최초, 상기 극판(1)과 리드 단자(3)의 접촉 부위에 국부적으로 전단력을 가하게 된다.When the condition is completed, the operator then operates the hydraulic cylinder 7 to engage the punch 9 to the die 5, at first, the contact portion between the pole plate 1 and the lead terminal 3. The shear force is applied locally.

그리고, 계속해서 이 전단력이 가해진 부위를 작업자는 상기 펀치(9)로 가압하게 되는데, 그러면 이때 상기 부위에는 소성 변형이 일어나면서 제2도에 도시된 바와 같이 홈(3a)을 형성하게 되어 결국 상기 극판(1)과 리드 단자(3)는 소성 변형된 상기 홈(3a) 부위의 결합력으로 인해 상호 접합될 수 있게 된다.Subsequently, the worker presses the part with the shearing force to the punch 9, and at this time, the plastic part is formed in the part to form the groove 3a as shown in FIG. The electrode plate 1 and the lead terminal 3 can be joined to each other due to the bonding force of the portion of the groove 3a that is plastically deformed.

참고로 상기 극판(1)과 리드 단자(3)의 소성 변형 부위의 단면은 제3도와 같다.For reference, the cross section of the plastic deformation portion of the electrode plate 1 and the lead terminal 3 is shown in FIG.

이처럼 본 발명에서는 펀치(9)와 다이(5)를 이용하여 박판의 상기 극판(1)과 리드 단자(3)의 소성 변형을 유도함으로써, 이들을 상호 접합시키게 된다.As described above, in the present invention, the punch 9 and the die 5 are used to induce plastic deformation of the electrode plate 1 and the lead terminal 3 of the thin plate, thereby joining them together.

제1도는 본 발명에 따른 리드 단자 접합장치의 구성도이고,1 is a configuration diagram of a lead terminal bonding apparatus according to the present invention,

제2도는 본 발명에 따라 극판에 리드 단자가 접합된 상태를 보여주는 사시도이고,2 is a perspective view showing a state in which the lead terminal is bonded to the electrode plate according to the present invention,

제3도는 제2도 A-A선의 단면도이다.3 is a cross-sectional view taken along the line A-A of FIG.

이상에서 살펴 본 바와 같이 본 발명에 따른 리튬 이온 전지의 리드 단자 접합방법은, 설비의 구성을 간단히 하면서 그 방법을 실현할 수 있게 되므로 이에 본 발명은, 리튬 이온 전지의 리드 단자를 극판에 접합시키기 위한 설비 투자비는 물론, 그 설비에 구성에 마모에 따른 부품수의 감소로 부품 교체에 따른 생산비를 절감시킬 수 있는 효과를 지닐 수 있게 된다.As described above, the method for joining the lead terminals of the lithium ion battery according to the present invention can realize the method while simplifying the configuration of the equipment. Therefore, the present invention provides a method for joining the lead terminals of the lithium ion battery to the electrode plate. As well as the equipment investment cost, the number of parts due to wear on the equipment can be reduced, thereby reducing the production cost of replacing parts.

Claims (2)

리튬 이온 전지가 보유하는 양,음극 극판에 리드 단자를 접합하는 리튬 이온 전지의 리드 단자 접합방법에 있어서,In a method of joining a lead terminal of a lithium ion battery in which a lead terminal is bonded to a positive and negative electrode plate held by a lithium ion battery, 상기 양,음극에 해당하는 극판을 소정의 형상을 갖는 다이의 상면에 안착시키고, 상기 극판의 상면으로 리드 단자를 안착시킨 상태에서, 상기 리드 단자의 상측으로부터 상기 다이와 결합되는 펀치를 가압하여 이루게 됨을 특징으로 하는 리튬 이온 전지의 리드 단자 접합방법.The positive plate corresponding to the positive electrode and the negative electrode is seated on an upper surface of a die having a predetermined shape, and the lead terminal is seated on the upper surface of the electrode plate, and the punch is coupled to the die from the upper side of the lead terminal. A method of joining a lead terminal of a lithium ion battery, characterized by the above-mentioned. 제1항에 있어서, 상기 펀치의 가압은 유압 실린더로 이루게 됨을 특징으로 하는 리튬 이온 전지의 리드 단자 접합방법.The method of claim 1, wherein the pressing of the punch is performed by a hydraulic cylinder.
KR1019960016152A 1996-05-15 1996-05-15 Joining method of lead terminal of lithium ion battery KR100396488B1 (en)

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KR100396488B1 true KR100396488B1 (en) 2003-11-17

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101471416B1 (en) * 2012-04-02 2014-12-10 주식회사 엘지화학 Battery Cell Assembly of Improved Connection Reliability
KR20170142659A (en) 2016-06-20 2017-12-28 한국광기술원 Busbar for bonding battery cell and method for battery cell using the same

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6134857A (en) * 1984-07-27 1986-02-19 Shin Kobe Electric Mach Co Ltd Manufacture of battery
JPH01232667A (en) * 1988-03-11 1989-09-18 Fuji Elelctrochem Co Ltd Lead plate connecting method for battery with lead plate
JPH04123757A (en) * 1990-09-14 1992-04-23 Yuasa Corp Preparation of nickel electrode
KR950021845A (en) * 1993-12-16 1995-07-26 조희재 Manufacturing method of non-sintered electrode for alkaline storage battery
JPH07240199A (en) * 1994-02-28 1995-09-12 Matsushita Electric Ind Co Ltd Manufacture of electrode plate for battery and cylindrical battery using this electrode plate

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6134857A (en) * 1984-07-27 1986-02-19 Shin Kobe Electric Mach Co Ltd Manufacture of battery
JPH01232667A (en) * 1988-03-11 1989-09-18 Fuji Elelctrochem Co Ltd Lead plate connecting method for battery with lead plate
JPH04123757A (en) * 1990-09-14 1992-04-23 Yuasa Corp Preparation of nickel electrode
KR950021845A (en) * 1993-12-16 1995-07-26 조희재 Manufacturing method of non-sintered electrode for alkaline storage battery
JPH07240199A (en) * 1994-02-28 1995-09-12 Matsushita Electric Ind Co Ltd Manufacture of electrode plate for battery and cylindrical battery using this electrode plate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101471416B1 (en) * 2012-04-02 2014-12-10 주식회사 엘지화학 Battery Cell Assembly of Improved Connection Reliability
KR20170142659A (en) 2016-06-20 2017-12-28 한국광기술원 Busbar for bonding battery cell and method for battery cell using the same

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