KR20230073468A - Lead tap for secondary battery - Google Patents

Lead tap for secondary battery Download PDF

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Publication number
KR20230073468A
KR20230073468A KR1020210159915A KR20210159915A KR20230073468A KR 20230073468 A KR20230073468 A KR 20230073468A KR 1020210159915 A KR1020210159915 A KR 1020210159915A KR 20210159915 A KR20210159915 A KR 20210159915A KR 20230073468 A KR20230073468 A KR 20230073468A
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KR
South Korea
Prior art keywords
lead tab
secondary battery
plating layer
sulfamic acid
lead
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KR1020210159915A
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Korean (ko)
Inventor
박종훈
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하이쎄미코(주)
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Priority to KR1020210159915A priority Critical patent/KR20230073468A/en
Publication of KR20230073468A publication Critical patent/KR20230073468A/en

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/531Electrode connections inside a battery casing
    • H01M50/534Electrode connections inside a battery casing characterised by the material of the leads or tabs
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/571Methods or arrangements for affording protection against corrosion; Selection of materials therefor
    • 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

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

The present invention relates to a lead tab for a secondary battery. The lead tab for a secondary battery includes: a lead tab body connected to one of a positive electrode plate and a negative electrode plate; a sulfamic acid plating layer formed on the lead tab body; and a nickel sulfate plating layer formed on the sulfamic acid plating layer. The lead tab for a secondary battery has bending resistance and corrosion resistance.

Description

이차전지용 리드탭{Lead tap for secondary battery}Lead tap for secondary battery {Lead tap for secondary battery}

본 발명은 이차전지용 리드탭에 관한 것이다.The present invention relates to a lead tab for a secondary battery.

스마트폰, 노트북 등의 휴대용 전자기기, 전기자동차 등 전기에너지를 주 에너지로 사용하는 장치들은 그 구동을 위한 전원으로 이차전지를 사용하게 되는데, 이러한 이차전지의 양극판 및 음극판에는 외부의 전원과의 통전을 위해 이차전지용 리드탭이 용접 등에 의해 연결된다.Devices that use electric energy as main energy, such as portable electronic devices such as smart phones and laptops, and electric vehicles, use secondary batteries as a power source for driving them. For this purpose, lead tabs for secondary batteries are connected by welding or the like.

이러한 이차전지용 리드탭의 예로 제시될 수 있는 것이 아래 제시된 특허문헌의 그 것이다.What can be presented as an example of such a lead tab for a secondary battery is that of the patent document presented below.

그러나, 종래의 이차전지용 리드탭에 의하면, 전원과의 연결 등을 위하여 복수 번 절곡되어야 하기 때문에, 복수 번의 절곡에도 강성을 유지할 수 있는 내절성과 부식에 대한 저항력인 내식성이 요구됨에도 불구하고, 그러한 내절성과 내식성이 제대로 갖추어지지 못한 문제가 있었다.However, according to the conventional lead tab for secondary batteries, since it must be bent multiple times for connection to a power source, despite the need for bending resistance capable of maintaining rigidity even after multiple bending and corrosion resistance, which is resistance to corrosion, such resistance to bending is required. There was a problem that performance and corrosion resistance were not properly equipped.

공개특허 제 10-2020-0059732호, 공개일자: 2020.05.29., 발명의 명칭: 이차전지용 리드탭, 이의 제조 장치, 및 이를 포함하는 이차전지Publication No. 10-2020-0059732, Publication date: 2020.05.29, Title of the invention: Lead tab for secondary battery, apparatus for manufacturing the same, and secondary battery including the same

본 발명은 내절성과 내식성을 구비한 이차전지용 리드탭을 제공하는 것을 일 목적으로 한다.An object of the present invention is to provide a lead tab for a secondary battery having folding resistance and corrosion resistance.

본 발명의 일 측면에 따른 이차전지용 리드탭은 외부의 전원과의 통전을 위해 이차전지의 양극판 및 음극판에 연결되는 것으로서,A lead tab for a secondary battery according to one aspect of the present invention is connected to the positive and negative plates of the secondary battery for current with an external power source,

상기 양극판과 상기 음극판 중 어느 하나에 연결되는 리드탭 본체; 상기 리드탭 본체 상에 형성되는 설파민산(sulfamic acid) 도금층; 및 상기 설파민산 도금층 상에 형성되는 황산니켈 도금층;을 포함한다.a lead tab body connected to one of the positive plate and the negative plate; a sulfamic acid plating layer formed on the lead tab body; and a nickel sulfate plating layer formed on the sulfamic acid plating layer.

본 발명의 일 측면에 따른 이차전지용 리드탭에 의하면, 상기 이차전지용 리드탭이 리드탭 본체와, 설파민산 도금층과, 황산니켈 도금층을 포함함에 따라, 상기 이차전지용 리드탭이 내절성과 내식성을 구비할 수 있게 되는 효과가 있다.According to the lead tab for secondary batteries according to one aspect of the present invention, as the lead tab for secondary batteries includes a lead tab body, a sulfamic acid plating layer, and a nickel sulfate plating layer, the lead tab for secondary batteries may have fold resistance and corrosion resistance. There is an effect that can be done.

도 1은 본 발명의 일 실시예에 따른 이차전지용 리드탭의 구조를 개략적으로 보이는 단면도.1 is a cross-sectional view schematically showing the structure of a lead tab for a secondary battery according to an embodiment of the present invention.

이하에서는 도면을 참조하여 본 발명의 실시예들에 따른 이차전지용 리드탭에 대하여 설명한다.Hereinafter, lead tabs for secondary batteries according to embodiments of the present invention will be described with reference to the drawings.

도 1은 본 발명의 일 실시예에 따른 이차전지용 리드탭의 구조를 개략적으로 보이는 단면도이다.1 is a cross-sectional view schematically showing the structure of a lead tab for a secondary battery according to an embodiment of the present invention.

도 1을 참조하면, 본 실시예에 따른 이차전지용 리드탭(100)은 외부의 전원과의 통전을 위해 이차전지의 양극판 및 음극판에 연결되는 것으로서, 리드탭 본체(110)와, 설파민산(sulfamic acid) 도금층(120)과, 황산니켈 도금층(130)을 포함한다.Referring to FIG. 1 , the lead tab 100 for a secondary battery according to this embodiment is connected to the positive and negative plates of the secondary battery to conduct electricity with an external power source, and includes a lead tab body 110 and sulfamic acid (sulfamic acid). acid) plating layer 120 and nickel sulfate plating layer 130.

상기 리드탭 본체(110)는 상기 양극판과 상기 음극판 중 어느 하나에 연결되는 것으로, 구리 등의 금속 재질로 이루어지고, 소정 면적의 플레이트 형태로 형성된다.The lead tab body 110 is connected to one of the positive electrode plate and the negative electrode plate, is made of a metal material such as copper, and is formed in a plate shape having a predetermined area.

상기 설파민산 도금층(120)은 상기 리드탭 본체(110) 상에 형성되는 것으로, 상기 리드탭 본체(110)의 상면을 전체적으로 덮어 도금되는 것이다.The sulfamic acid plating layer 120 is formed on the lead tab body 110 and covers the entire upper surface of the lead tab body 110 and is plated.

상기 황산니켈 도금층(130)은 상기 설파민산 도금층(120) 상에 형성되는 것으로, 상기 설파민산 도금층(120)의 상면을 전체적으로 덮어 도금되는 것이다.The nickel sulfate plating layer 130 is formed on the sulfamic acid plating layer 120 and covers the entire top surface of the sulfamic acid plating layer 120 and is plated.

상기와 같이, 상기 이차전지용 리드탭(100)이 상기 리드탭 본체(110)와, 상기 설파민산 도금층(120)과, 상기 황산니켈 도금층(130)을 포함함에 따라, 상기 이차전지용 리드탭(100)이 내절성과 내식성을 구비할 수 있게 된다.As described above, as the secondary battery lead tab 100 includes the lead tab body 110, the sulfamic acid plating layer 120, and the nickel sulfate plating layer 130, the secondary battery lead tab 100 ) can be provided with folding resistance and corrosion resistance.

본 실시예에서는, 상기 황산니켈 도금층(130)으로는 과도한 무광이거나 과도한 광택을 내지도 않는 윤광(luminous) 효과를 말하는 새틴 효과(satiny effect)를 부여하기 위하여, 산성의 새틴 니켈 또는 니켈 합금이 적용된다.In this embodiment, acidic satin nickel or a nickel alloy is applied to the nickel sulfate plating layer 130 in order to impart a satiny effect, which refers to a luminous effect that is not excessively matte or excessively glossy. do.

상기와 같이 구성됨에 따라, 상기 황산니켈 도금층(130)의 광택이 일정량 감소될 수 있게 되고, 그에 따라 상기 황산니켈 도금층(130)을 구성하는 황산니켈 자체의 광택으로 인한 빛 반사로 인해 이차전지의 제조 공정 중 카메라의 인식률을 저하시키는 문제가 해소될 수 있게 된다.According to the configuration as described above, the gloss of the nickel sulfate plating layer 130 can be reduced by a certain amount, and accordingly, due to the reflection of light due to the gloss of the nickel sulfate itself constituting the nickel sulfate plating layer 130, the secondary battery The problem of lowering the recognition rate of the camera during the manufacturing process can be solved.

상기에서 본 발명은 특정한 실시예에 관하여 도시되고 설명되었지만, 당업계에서 통상의 지식을 가진 자라면 이하의 특허청구범위에 기재된 본 발명의 사상 및 영역을 벗어나지 않는 범위 내에서 본 발명을 다양하게 수정 및 변경시킬 수 있음을 알 수 있을 것이다. 그렇지만 이러한 수정 및 변형 구조들은 모두 본 발명의 권리범위 내에 포함되는 것임을 분명하게 밝혀두고자 한다.Although the present invention has been shown and described in relation to specific embodiments above, those skilled in the art may modify the present invention in various ways without departing from the spirit and scope of the present invention described in the claims below. And it will be appreciated that it can be changed. However, it should be clearly stated that all of these modifications and variations are included within the scope of the present invention.

본 발명의 일 측면에 따른 이차전지용 리드탭에 의하면, 내절성과 내식성을 구비할 수 있으므로, 그 산업상 이용가능성이 높다고 하겠다.According to the lead tab for a secondary battery according to one aspect of the present invention, since it can be provided with folding resistance and corrosion resistance, it can be said that its industrial applicability is high.

100 : 이차전지용 리드탭
110 : 리드탭 본체
120 : 설파민산 도금층
130 : 황산니켈 도금층
100: lead tab for secondary battery
110: lead tab body
120: sulfamic acid plating layer
130: nickel sulfate plating layer

Claims (2)

외부의 전원과의 통전을 위해 이차전지의 양극판 및 음극판에 연결되는 것으로서,
상기 양극판과 상기 음극판 중 어느 하나에 연결되는 리드탭 본체;
상기 리드탭 본체 상에 형성되는 설파민산(sulfamic acid) 도금층; 및
상기 설파민산 도금층 상에 형성되는 황산니켈 도금층;을 포함하는 이차전지용 리드탭.
As connected to the positive and negative plates of the secondary battery for current with an external power source,
a lead tab body connected to one of the positive electrode plate and the negative electrode plate;
a sulfamic acid plating layer formed on the lead tab body; and
A lead tab for a secondary battery comprising a nickel sulfate plating layer formed on the sulfamic acid plating layer.
제 1 항에 있어서,
상기 황산니켈 도금층으로는 산성의 새틴 니켈 또는 니켈 합금이 적용되는 것을 특징으로 하는 이차전지용 리드탭.
According to claim 1,
A lead tab for a secondary battery, characterized in that acidic satin nickel or a nickel alloy is applied as the nickel sulfate plating layer.
KR1020210159915A 2021-11-19 2021-11-19 Lead tap for secondary battery KR20230073468A (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200059732A (en) 2018-11-21 2020-05-29 엘지전자 주식회사 Lead tap for secondary battery, manufacturing apparatus thereof, and secondary battery including same

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200059732A (en) 2018-11-21 2020-05-29 엘지전자 주식회사 Lead tap for secondary battery, manufacturing apparatus thereof, and secondary battery including same

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