KR20030069614A - A lithium battery cathode and anode connecting method - Google Patents

A lithium battery cathode and anode connecting method Download PDF

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Publication number
KR20030069614A
KR20030069614A KR1020020009501A KR20020009501A KR20030069614A KR 20030069614 A KR20030069614 A KR 20030069614A KR 1020020009501 A KR1020020009501 A KR 1020020009501A KR 20020009501 A KR20020009501 A KR 20020009501A KR 20030069614 A KR20030069614 A KR 20030069614A
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South Korea
Prior art keywords
case
lithium battery
welding
header
terminal piece
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KR1020020009501A
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Korean (ko)
Inventor
고영옥
이진식
나기수
김종성
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주식회사 비츠로셀
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Application filed by 주식회사 비츠로셀 filed Critical 주식회사 비츠로셀
Priority to KR1020020009501A priority Critical patent/KR20030069614A/en
Publication of KR20030069614A publication Critical patent/KR20030069614A/en

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

PURPOSE: A method for connecting the positive and negative terminals of a lithium battery is provided, to increase the welding strength by widening the welding area and to reduce the processing step. CONSTITUTION: The method comprises the steps of allowing the short part of a terminal piece(30) connected with a lithium battery element(20) to be exposed outside a case(10); inserting a header(40) on the upper part of the case(10) and fixing it; and fixing the case(10) and the header(40) together with the terminal piece(30) by welding.

Description

리튬 전지의 양극 및 음극 단자 연결 방법{A lithium battery cathode and anode connecting method}A lithium battery cathode and anode connecting method

본 발명은 리튬 전지에 관한 것으로서, 특히 리튬 전지의 단위 전지 조립시 리튬 전지 양극 및 음극의 전기적 연결을 위해 사용하는 단자를 연결함에 있어 리튬 전지가 삽입되는 케이스와 헤더 사이에 단자를 삽입하고 헤더와 케이스의 용접과 동시에 단자도 용접 고정되도록 하여 용접 강도를 증가시키고 공정수를 절감시킨 리튬 전지의 양극 및 음극 단자 연결 방법에 관한 것이다.The present invention relates to a lithium battery, and in particular, when connecting a terminal used for electrical connection between a lithium battery positive electrode and a negative electrode when assembling a unit cell of a lithium battery, a terminal is inserted between a case and a header into which the lithium battery is inserted, The present invention relates to a method of connecting a positive electrode and a negative electrode terminal of a lithium battery in which a terminal is welded and fixed at the same time as the welding of the case, thereby increasing the welding strength and reducing the number of processes.

무전기, 컴퓨터, 가전 제품 그리고 자료 백업 기능을 갖는 각종 전자 장비에는 전류 공급을 위해 리튬 전지가 사용되고 있다. 리튬 전지는 작은 크기를 갖지만 장시간 동안 일정한 전류를 공급할 수 있기 때문에 많은 전자기기에 사용되고 있다.Lithium batteries are used for current supply in radios, computers, consumer electronics, and other electronic devices with data backup capabilities. Lithium batteries have a small size but are used in many electronic devices because they can supply a constant current for a long time.

기존 단위 리튬 전지내에서 양극 및 음극 단자의 전기적 연결은 도체 단자편을 전지의 케이스에 점용접(spot welding) 방식을 사용하여 접합하도록 하였다.In the conventional unit lithium battery, the electrical connection between the positive and negative terminals allows the conductor terminal piece to be bonded to the case of the battery using a spot welding method.

점용접 방법을 사용하여 단자편을 접합할 경우, 점용접에 사용되는 전류의 크기에 따라서 용접 상태가 달라지게 된다. 즉, 용접 전류가 정격보다 적을 경우에는 용접 강도가 약하여 외부 충격에 의해 용접부가 떨어지는 문제점이 있고, 용접 전류가 정격보다 클 경우에는 용접물의 파손이 발생하게 된다.When the terminal pieces are joined using the spot welding method, the welding state varies depending on the magnitude of the current used for spot welding. In other words, when the welding current is less than the rating, the welding strength is weak and there is a problem in that the welding portion is dropped by an external impact, and when the welding current is larger than the rating, breakage of the weld occurs.

점용점의 용접 전류는 용접 위치, 표면 상태, 용접봉의 가압 상태 등에 의해 변화하기 때문에 전류값을 일괄적으로 적용할 수 없는 문제점이 있었다.Since the welding current of the spot is changed by the welding position, the surface state, the pressurization state of the welding rod, etc., there is a problem that the current value cannot be applied collectively.

본 발명은 상기한 문제점을 해결하기 위한 것으로서, 리튬 전지의 양극 및 음극 단자에 단자편을 연결함에 있어 리튬 전지 소자가 케이스에 삽입된 후 전지 케이스와 전지 케이스의 상부에 삽입되는 헤더 사이에 단자편이 끼워지도록 한 후 헤더와 케이스의 용접 방법에 의해 고정할 때 전지 소자에 연결되어 있는 단자편도동시에 고정될 수 있도록 하는 리튬 전지의 양극 및 음극 단자 용접 방법을 제공하는 것을 목적으로 한다.The present invention is to solve the above problems, and in connecting the terminal piece to the positive and negative terminals of the lithium battery, the terminal piece is inserted between the battery case and the header inserted into the battery case after the lithium battery element is inserted into the case. It is an object of the present invention to provide a method for welding a positive electrode and a negative electrode terminal of a lithium battery such that the terminal piece connected to the battery element can be fixed at the same time when it is fixed by welding the header and the case.

도 1은 본 발명에 의한 리튬 전지의 양극 및 음극 단자 연결 방법을 설명하는 도면으로서, 단자편이 노출된 상태에서 헤더를 삽입하는 것을 설명하기 위한 도면.BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view for explaining a method for connecting a positive electrode and a negative electrode terminal of a lithium battery according to the present invention, and for explaining the insertion of a header in a state in which a terminal piece is exposed.

도 2는 본 발명에 의한 리튬 전지의 양극 및 음극 단자 연결 방법을 설명하는 도면으로서, 헤더가 케이스에 고정되어 있는 것을 설명하기 위한 도면.2 is a view for explaining a positive and negative terminal connection method of a lithium battery according to the present invention, a view for explaining that the header is fixed to the case.

도 3은 본 발명에 의한 리튬 전지의 양극 및 음극 단자 연결 방법을 설명하는 도면으로서, 용접 작업이 완료되어 완성된 리튬 전지를 나타내는 도면.3 is a view illustrating a method for connecting a positive electrode and a negative electrode terminal of a lithium battery according to the present invention, illustrating a lithium battery in which a welding operation is completed.

< 도면의 주요부분에 대한 부호의 간단한 설명 ><Brief description of symbols for the main parts of the drawings>

10 : 케이스 20 : 리튬 전지 소자10 case 20 lithium battery element

30 : 단자편 40 : 헤더30: terminal piece 40: header

도 1, 2 및 3은 본 발명에 의한 리튬 전지의 양극 및 음극 단자 연결 방법을 설명하는 도면으로서, 리튬 전지 소자를 케이스에 삽입한 후 전지의 양극 및 음극 단자에 단자편을 연결하여 구성되는 리튬 전지에 있어서, 단자편(30)이 연결되어 있는 리튬 전지 소자(20)를 케이스(10)에 삽입한 후 단자편(30)을 전지 소자(20)에 연결하고 단자편(30)의 일단부는 케이스(10)의 상부를 통해 외부로 노출되도록 하며 케이스(10)를 밀봉하는 헤더(30)가 케이스(10)의 상부에 위치된 후 헤더(40)와 케이스(10)의 선용접에 의해 헤더(40)와 케이스(10)의 사이에 노출되어 있던 단자편(30)도 동시에 용접되어 구성되어 있음을 도시하고 있다.1, 2 and 3 are views illustrating a method of connecting the positive electrode and the negative electrode terminal of the lithium battery according to the present invention, which is formed by inserting a lithium battery element into a case and connecting terminal pieces to the positive and negative terminals of the battery. In the battery, after inserting the lithium battery element 20 to which the terminal piece 30 is connected to the case 10, the terminal piece 30 is connected to the battery element 20, and one end of the terminal piece 30 is connected. After the header 30 which is exposed to the outside through the upper part of the case 10 and seals the case 10 is positioned on the upper part of the case 10, the header 40 is pre-welded by the case 10. The terminal piece 30 exposed between the 40 and the case 10 is also shown welded at the same time.

도 1에 도시되어 있는 바와 같이, 리튬 전지 소자(20)에 단자편(30)을 연결한 후, 리튬 전지 소자(20)를 케이스(10)에 삽입하여 위치시킨다. 리튬 전지 소자(20)에 연결되는 단자편(30)은 전지가 케이스 내부에 삽입된 후 케이스(10)의 외부로 단자편의 단부가 노출될 수 있는 정도의 길이를 갖도록 형성된다.As shown in FIG. 1, after connecting the terminal piece 30 to the lithium battery element 20, the lithium battery element 20 is inserted into the case 10 and positioned. The terminal piece 30 connected to the lithium battery element 20 is formed to have a length such that the end of the terminal piece is exposed to the outside of the case 10 after the battery is inserted into the case.

리튬 전지 소자(20)가 케이스에 삽입되어 있는 상태에서는 단자편(30)도 케이스의 외부로 노출되어 있다. 이때 헤더(40)를 케이스(10)의 상부에 끼워넣으면 헤더(40)와 케이스(10) 사이에 단자편(30)의 노출된 부분이 밀착되어 부착됨을 알 수 있다. 이때의 조립 상태가 도 2에 도시되어 있다.In the state where the lithium battery element 20 is inserted into the case, the terminal piece 30 is also exposed to the outside of the case. At this time, when the header 40 is inserted into the upper portion of the case 10, it can be seen that the exposed portion of the terminal piece 30 is closely attached between the header 40 and the case 10. The assembly state at this time is shown in FIG.

이 상태에서 헤더(40)와 케이스(10)를 용접하여 고정시키면 케이스(10)는 헤더(40)에 의해 밀봉된다. 단자편(30)은 케이스(10)와 헤더(40) 사이에 끼워져 있는 상태이기 때문에 헤더의 용접 작업시 단자편(30)도 동시에 용접 고정된다.In this state, when the header 40 and the case 10 are fixed by welding, the case 10 is sealed by the header 40. Since the terminal piece 30 is sandwiched between the case 10 and the header 40, the terminal piece 30 is also welded and fixed at the same time during the welding operation of the header.

또한, 케이스(10)와 헤더(40)를 용접에 의해 단자편(30)도 용접 고정되는 한편 단자편(30)의 노출 부위는 용접 작업시 자연스럽게 절단되어, 도 3에 도시되어 있는 바와 같이 리튬 단위 전지가 완성된다.In addition, the terminal piece 30 is also welded and fixed by welding the case 10 and the header 40, while the exposed portion of the terminal piece 30 is naturally cut during the welding operation, and as shown in FIG. The unit cell is completed.

상기와 같이 구성된 본 발명에 의하면, 단자편이 연결된 리튬 전지 소자를 케이스에 삽입하고 케이스 외부로 단자편이 돌출된 상태에서 헤더를 케이스의 상부에 삽입한 후 헤더와 케이스를 용접 고정되도록 함으로서 단자편의 용접시 고전류의 용접 전류를 안정적으로 사용할 수 있고 용접 부위의 면적이 넓어져 작업 효율을 증가하는 효과와 용접 불량을 현저히 줄일 수 있는 효과를 갖는다.According to the present invention configured as described above, when welding the terminal piece by inserting the lithium battery element connected with the terminal piece in the case and inserting the header in the upper portion of the case in the state in which the terminal piece protrudes out of the case to weld and fix the header and the case High current welding current can be used stably and the area of the welding area is widened, which has the effect of increasing the working efficiency and significantly reducing the welding defects.

Claims (1)

리튬 단위 전지를 케이스에 삽입한 후 전지의 양극 및 음극 단자에 단자편을 전기적으로 연결하는 구성에 있어서, 리튬 전지 소자(20)에 연결되어 있는 단자편(30)의 단부가 케이스(10)의 외부로 노출되도록 한 후, 케이스(10)의 상부에 헤더(40)를 삽입 고정한 후 용접 작업을 실시하여 케이스(10)와 헤더(40)가 용접 고정됨과 동시에 단자편(30)이 용접 고정되도록 하는 리튬 전지의 양극 및 음극 단자 연결 방법.In the configuration in which the terminal piece is electrically connected to the positive and negative terminals of the battery after the lithium unit battery is inserted into the case, the end of the terminal piece 30 connected to the lithium battery element 20 is connected to the case 10. After exposing to the outside, the header 40 is inserted into and fixed to the upper portion of the case 10, and the welding operation is performed so that the case 10 and the header 40 are welded and the terminal piece 30 is welded and fixed. To connect the positive and negative terminals of a lithium battery.
KR1020020009501A 2002-02-22 2002-02-22 A lithium battery cathode and anode connecting method KR20030069614A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190121622A (en) 2018-04-18 2019-10-28 (주)케이엔제이브레이즈 Lithium Battery

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09171809A (en) * 1995-10-16 1997-06-30 Sanyo Electric Co Ltd Laser sealed battery
KR20000029402A (en) * 1998-10-30 2000-05-25 다카노 야스아키 Sealing cell

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09171809A (en) * 1995-10-16 1997-06-30 Sanyo Electric Co Ltd Laser sealed battery
KR20000029402A (en) * 1998-10-30 2000-05-25 다카노 야스아키 Sealing cell

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190121622A (en) 2018-04-18 2019-10-28 (주)케이엔제이브레이즈 Lithium Battery

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