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KR20060027692A - Battery for electronic device - Google Patents

Battery for electronic device Download PDF

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Publication number
KR20060027692A
KR20060027692A KR1020040076603A KR20040076603A KR20060027692A KR 20060027692 A KR20060027692 A KR 20060027692A KR 1020040076603 A KR1020040076603 A KR 1020040076603A KR 20040076603 A KR20040076603 A KR 20040076603A KR 20060027692 A KR20060027692 A KR 20060027692A
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South Korea
Prior art keywords
battery
battery cell
housing
circuit board
electronic device
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KR1020040076603A
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Korean (ko)
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조한경
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삼성전자주식회사
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Priority to KR1020040076603A priority Critical patent/KR20060027692A/en
Publication of KR20060027692A publication Critical patent/KR20060027692A/en
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/42Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0031Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
    • 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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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Battery Mounting, Suspending (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

개시된 본 발명의 전자기기용 전지는, 단자노출공이 형성된 하우징과; 하우징 내에 설치되는 전지셀과; 하우징 내에 설치되어 전지셀과 전기적으로 연결되며, 단자노출공으로 노출되는 접속단자가 일체로 형성된 전지셀 보호회로;를 포함하는 것을 특징으로 하며, 제품의 소형화 및 경량화가 가능하고, 조립공정을 단축시켜 생산성을 높일 수 있게 된다.An electronic device battery of the present invention includes a housing in which a terminal exposure hole is formed; A battery cell installed in the housing; Battery cell protection circuit is installed in the housing and electrically connected to the battery cell, the connection terminal exposed to the terminal exposure hole; integrally characterized in that it comprises a small size and light weight of the product, and shorten the assembly process Productivity can be increased.

Description

전자기기용 전지{A battery for electric device}Battery for electronic equipment {A battery for electric device}

도 1은 종래의 전자기기용 전지를 나타내 보인 개략적인 단면도.1 is a schematic cross-sectional view showing a conventional battery for an electronic device.

도 2는 본 발명의 실시예에 따른 전자기기용 전지를 나타내 보인 분리 사시도.Figure 2 is an exploded perspective view showing a battery for an electronic device according to an embodiment of the present invention.

도 3은 도 2에 도시된 전자기기용 전지의 결합단면도.3 is a cross-sectional view of the battery for the electronic device shown in FIG.

< 도면의 주요부분에 대한 부호의 설명 ><Description of Symbols for Major Parts of Drawings>

20..하우징 21..하우징몸체20. Housing 21. Housing body

23..커버 30..전지셀23. Cover 30. Battery cell

32,33..전극단자 40..보호회로32, 33. Electrode terminal 40. Protection circuit

42..회로기판 45,46..접속단자42. Circuit board 45, 46. Connection terminal

본 발명은 전자기기용 전지에 관한 것이다.The present invention relates to a battery for an electronic device.

최근 첨단 전자기기의 발달로 전자장비가 소형화 및 경량화됨에 따라 휴대용 전자기기의 사용이 점차 증대되고 있다. 따라서, 이러한 전자기기의 전원으로 사용되는 고에너지 밀도을 갖는 전지의 필요성이 높아지게 되고 있다. 이와 더불 어, 전지의 경량화 및 소형화의 필요성도 함께 높아지고 있다.Recently, as electronic equipments are miniaturized and lightened due to the development of advanced electronic devices, the use of portable electronic devices is gradually increasing. Therefore, the necessity of the battery which has high energy density used as a power supply of such an electronic device becomes high. In addition, the necessity of lightening and miniaturizing the battery is also increasing.

이러한 전지로는 종래의 니켈 카드뮴 전지 및 니켈 수소전지에 비하여 전압이 높고 훨씬 많은 충방전 싸이클이 가능하고, 환경문제를 일으키지 않는 리튬 2차 전지가 차세대 배터리로 많은 관심을 받고 있다.As such a battery, a lithium secondary battery having a higher voltage and much more charge / discharge cycles than a conventional nickel cadmium battery and a nickel hydride battery, and which does not cause environmental problems, has received much attention as a next-generation battery.

상기 리튬 2차 전지는 전해질의 종류에 따라서 액체 전해질을 사용하는 리튬 이온 전지와, 고체형 전해질을 사용하는 리튬 이온 폴리머 전지로 나눌 수 있다.The lithium secondary battery may be classified into a lithium ion battery using a liquid electrolyte and a lithium ion polymer battery using a solid electrolyte according to the type of electrolyte.

도 1은 일반적인 전자기기의 2차 전지를 나타내 보인 개략적인 단면도이다.1 is a schematic cross-sectional view showing a secondary battery of a general electronic device.

도 1을 참조하면, 2차 전지는, 하우징(10)과, 케이스(10) 내에 설치되는 전지셀(11)과, 보호회로용 기판(13)과, 접속단자(15)를 구비한다.Referring to FIG. 1, a secondary battery includes a housing 10, a battery cell 11 installed in a case 10, a protective circuit board 13, and a connection terminal 15.

상기 하우징(10)은 전지셀(11)을 수용하며, 외부의 충격으로부터 보호하기 위한 것이다.The housing 10 accommodates the battery cell 11 and is intended to protect from external impact.

상기 전지셀(11)은 리튬 이온 폴리머 전지의 경우, 내부에 캐소드, 애노드 및 세퍼레이터를 구비하는 전극조립체가 패키지용 케이스에 밀봉되어 이루어진다. 상기 전극조립체에서 발생하는 전류를 외부로 유도하기 위한 전기적 통로 역할을 하는 전극단자(16)(또는 리드선)는 상기 캐소드 및 애노드에 마련된 캐소드탭과 애노드탭에 연결되어 전지셀(11)의 외부로 소정 길이 노출된다. 이러한 전극단자(16)는 상기 회로기판(13)에 납땜에 의해 연결된다.In the case of the lithium ion polymer battery, the battery cell 11 is formed by sealing an electrode assembly including a cathode, an anode, and a separator in a package case. The electrode terminal 16 (or lead wire), which serves as an electrical path for guiding the current generated in the electrode assembly to the outside, is connected to the cathode tab and the anode tab provided at the cathode and the anode to the outside of the battery cell 11. The predetermined length is exposed. The electrode terminal 16 is connected to the circuit board 13 by soldering.

상기 회로기판(13)은 전지셀(11)의 충전시 과충전 등으로 인해 파손되는 것을 방지하기 위한 보호회로이다.The circuit board 13 is a protection circuit for preventing damage due to overcharging or the like during charging of the battery cell 11.

상기 접속단자(15)는 별도의 부품으로 제작되어 하우징(10) 내에 설치된다. 이 접속단자(15)는 일단은 회로기판(13)에 납땜 등에 의해 전기적으로 연결된다. 그리고, 접속단자(15)의 타단은 하우징(10)의 소정 위치에 형성된 개구(10a)를 통해 외부로 노출된다.The connection terminal 15 is manufactured as a separate component and installed in the housing 10. One end of this connecting terminal 15 is electrically connected to the circuit board 13 by soldering or the like. The other end of the connection terminal 15 is exposed to the outside through the opening 10a formed at a predetermined position of the housing 10.

이러한 구성을 가지는 종래의 전자기기용 전지는, 상기와 같이 접속단자(15)를 별도의 부품으로 마련하여 조립하게 되므로, 하우징(10) 내에서 일정 공간을 차지하게 된다. 따라서, 전지 전체의 크기가 커지고, 무게가 증가하는 요인이 되므로, 경량화 및 소형화의 추세에 부적합하다.In the conventional electronic device battery having such a configuration, the connection terminal 15 is provided as a separate component and assembled as described above, thus occupying a predetermined space in the housing 10. Therefore, the size of the entire battery increases and the weight increases, which is not suitable for the trend of weight reduction and size reduction.

또한, 별도의 접속단자(15)를 조립 및 연결하기 위한 공정이 많아져서 생산성이 떨어지는 문제점이 있다.In addition, there are many processes for assembling and connecting the separate connection terminal 15, which leads to a problem of low productivity.

본 발명은 상기와 같은 문제점을 해결하기 위해 창안된 것으로, 구조가 간단하도록 개선된 전자기기용 전지를 제공하는데 그 목적이 있다.The present invention has been made to solve the above problems, and an object thereof is to provide an improved battery for an electronic device so that the structure is simple.

상기 목적을 달성하기 위한 본 발명에 따른 전자기기용 전지는, 단자노출공이 형성된 하우징과; 상기 하우징 내에 설치되는 전지셀과; 상기 하우징 내에 설치되어 상기 전지셀과 전기적으로 연결되며, 상기 단자노출공으로 노출되는 접속단자가 일체로 형성된 전지셀 보호회로;를 포함하는 것을 특징으로 한다.Battery for an electronic device according to the present invention for achieving the above object, the terminal exposure hole is formed; A battery cell installed in the housing; And a battery cell protection circuit installed in the housing and electrically connected to the battery cell and having a connection terminal exposed through the terminal exposure hole.

여기서, 상기 전지셀 보호회로는, 일면에 복수의 보호회로용 부품이 설치되는 회로기판을 포함하며, 상기 회로기판의 타면에 상기 접속단자가 마련된 것이 바람직하다. The battery cell protection circuit may include a circuit board having a plurality of protection circuit components installed on one surface thereof, and the connection terminal being provided on the other surface of the circuit board.                     

또한, 상기 접속단자는 상기 회로기판의 타면에 도금되어 형성된 것이 좋다.In addition, the connection terminal may be formed by plating on the other surface of the circuit board.

또한, 상기 전지셀은 상기 회로기판의 일면에 납땜에 의해 전기적으로 연결되는 전극단자를 가지는 것이 좋다.In addition, the battery cell may have an electrode terminal electrically connected to one surface of the circuit board by soldering.

이하 첨부된 도면을 참조하여 본 발명의 실시예에 따른 전자기기용 전지를 자세히 설명하기로 한다.Hereinafter, a battery for an electronic device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

도 2 및 도 3을 참조하면, 본 발명의 실시예에 따른 전자기기용 전지는, 하우징(20)과, 하우징(20) 내에 설치되는 전지셀(30)과, 보호회로(40)를 구비한다.2 and 3, a battery for an electronic device according to an embodiment of the present invention includes a housing 20, a battery cell 30 installed in the housing 20, and a protection circuit 40.

상기 하우징(20)은 수용부를 가지는 하우징몸체(21)와, 하우징몸체(21)의 상면을 덮도록 결합되는 커버(23)를 구비한다. 커버(23)에는 복수의 단자노출공(23a)이 형성된다. 이러한 하우징(20)은 플라스틱 재질로 형성되는 것이 일반적이다.The housing 20 includes a housing body 21 having a receiving portion and a cover 23 coupled to cover the upper surface of the housing body 21. The cover 23 is formed with a plurality of terminal exposure holes 23a. The housing 20 is generally formed of a plastic material.

상기 전지셀(30)은 예컨대, 리튬 이온 폴리머 전지로서, 내부에 캐소드와 애노드 및 전해질과 세퍼레이터가 패키징용 케이스(31)에 의해 패키징된 구성을 갖는다. 상기 전해질과 세퍼레이터는 캐소드와 애노드 사이에서 리튬 이온의 이동 경로를 제공하는 역할을 한다. 이러한 구성을 가지는 전지셀(30)은 일반적인 구성이므로 자세한 설명은 생략한다.The battery cell 30 is, for example, a lithium ion polymer battery, and has a structure in which a cathode, an anode, an electrolyte, and a separator are packaged by a packaging case 31. The electrolyte and the separator serve to provide a migration path of lithium ions between the cathode and the anode. Since the battery cell 30 having such a configuration is a general configuration, detailed description thereof will be omitted.

한편, 상기 캐소드와 애노드 각각에서 인출된 캐소드탭과 애노드탭에 연결된 전극단자들(32,33)은 패키징용 케이스(31) 외부로 빠져나와 상기 보호회로(40)에 전기적으로 연결된다.Meanwhile, the electrode terminals 32 and 33 connected to the cathode tabs and the anode tabs drawn from the cathode and the anode, respectively, exit out of the packaging case 31 and are electrically connected to the protection circuit 40.

상기 보호회로(40)는 전지셀(20)의 과부하, 과충전, 과열 등을 방지하여 전지셀(20)을 보호하기 위한 것이다. 이러한 보호회로(40)는 복수의 회로부품(41)이 설치되는 회로기판(42)과, 회로기판(42)에 형성된 접속단자(45,46)를 구비한다.The protection circuit 40 is to protect the battery cell 20 by preventing overload, overcharge, overheating, etc. of the battery cell 20. The protection circuit 40 includes a circuit board 42 on which a plurality of circuit components 41 are installed, and connection terminals 45 and 46 formed on the circuit board 42.

상기 회로부품(41)은 회로기판(42)의 일면(42a)에 설치된다. 그리고, 회로기판(42)의 타면(42b)에는 상기 접속단자(45,46)가 일체로 형성된다. 즉, 상기 접속단자(45,46)는 상기 단자노출공(23a)에 대응되는 위치에서, 회로기판(42)의 타면(42b)에 도금에 의해 마련된다. 바람직하게는 접속단자(45,46)는 도전성이 높은 금으로 도금되는 것이 좋다. 이와 같이, 회로기판(42)에 금도금에 의해 접속단자(45,46)를 일체로 형성시킴으로써, 접속단자(45,46)의 두께를 줄일 수 있게 된다.The circuit component 41 is provided on one surface 42a of the circuit board 42. The connection terminals 45 and 46 are integrally formed on the other surface 42b of the circuit board 42. That is, the connection terminals 45 and 46 are provided by plating on the other surface 42b of the circuit board 42 at a position corresponding to the terminal exposure hole 23a. Preferably, the connection terminals 45 and 46 are plated with gold having high conductivity. In this way, by forming the connection terminals 45 and 46 integrally with the circuit board 42 by gold plating, the thickness of the connection terminals 45 and 46 can be reduced.

따라서, 하우징(20)의 사이즈를 줄일 수 있어, 결과적으로는 전지의 전체 두께를 줄이고, 무게도 줄일 수 있는 이점이 있다.Therefore, the size of the housing 20 can be reduced, and as a result, the overall thickness of the battery can be reduced, and the weight can be reduced.

또한, 도금에 의해 접속단자(45,46)를 회로기판(42)에 직접 마련함으로써, 종래와 같이 납땜 등의 공정을 통해 접속단자와 회로기판을 연결하는 공정이 생략될 수 있다. 따라서, 제품의 생산공정을 줄여서 생산성을 향상시킬 수 있게 된다.In addition, by providing the connection terminals 45 and 46 directly to the circuit board 42 by plating, the process of connecting the connection terminal and the circuit board through a process such as soldering as in the prior art can be omitted. Therefore, productivity can be improved by reducing the production process of the product.

이상에서 설명한 바와 같은 본 발명의 전자기기용 전지에 따르면, 접속단자를 보호회로용 회로기판에 일체로 형성시킴으로써, 간단한 구조를 갖게 된다.According to the battery for an electronic device of the present invention as described above, the connection terminal is formed integrally with the circuit board for the protection circuit, thereby having a simple structure.

따라서, 제품의 사이즈와 무게를 줄일 수 있게 된다.Therefore, the size and weight of the product can be reduced.

또한, 제품의 조립공정을 단순화하여 생산성을 향상시킬 수 있게 된다.In addition, productivity can be improved by simplifying the assembly process of the product.

Claims (4)

단자노출공이 형성된 하우징과;A housing in which a terminal exposure hole is formed; 상기 하우징 내에 설치되는 전지셀과;A battery cell installed in the housing; 상기 하우징 내에 설치되어 상기 전지셀과 전기적으로 연결되며, 상기 단자노출공으로 노출되는 접속단자가 일체로 형성된 전지셀 보호회로;를 포함하는 것을 특징으로 하는 전자기기용 전지.And a battery cell protection circuit installed in the housing and electrically connected to the battery cell and integrally formed with a connection terminal exposed to the terminal exposure hole. 제1항에 있어서, 상기 전지셀 보호회로는,The method of claim 1, wherein the battery cell protection circuit, 일면에 복수의 보호회로용 부품이 설치되는 회로기판을 포함하며,It includes a circuit board on which a plurality of protection circuit components are installed on one side, 상기 회로기판의 타면에 상기 접속단자가 마련된 것을 특징으로 하는 전자기기용 전지. The battery for an electronic device, characterized in that the connection terminal is provided on the other surface of the circuit board. 제2항에 있어서, 상기 접속단자는 상기 회로기판의 타면에 도금되어 형성된 것을 특징으로 하는 전자기기용 전지.The electronic device battery according to claim 2, wherein the connection terminal is plated on the other surface of the circuit board. 제2항에 있어서, 상기 전지셀은 상기 회로기판의 일면에 납땜에 의해 전기적으로 연결되는 전극단자를 가지는 것을 특징으로 하는 전자기기용 전지.The battery of claim 2, wherein the battery cell has an electrode terminal electrically connected to one surface of the circuit board by soldering.
KR1020040076603A 2004-09-23 2004-09-23 Battery for electronic device Withdrawn KR20060027692A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9172066B2 (en) 2007-09-10 2015-10-27 Samsung Sdi Co., Ltd. Protection circuit board, battery pack including the protection circuit board and method of fabricating the protection circuit board

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9172066B2 (en) 2007-09-10 2015-10-27 Samsung Sdi Co., Ltd. Protection circuit board, battery pack including the protection circuit board and method of fabricating the protection circuit board

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