KR100325861B1 - Sealed battery - Google Patents
Sealed battery Download PDFInfo
- Publication number
- KR100325861B1 KR100325861B1 KR1019990046929A KR19990046929A KR100325861B1 KR 100325861 B1 KR100325861 B1 KR 100325861B1 KR 1019990046929 A KR1019990046929 A KR 1019990046929A KR 19990046929 A KR19990046929 A KR 19990046929A KR 100325861 B1 KR100325861 B1 KR 100325861B1
- Authority
- KR
- South Korea
- Prior art keywords
- cap plate
- gasket
- sealed battery
- electrode
- hollow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000012212 insulator Substances 0.000 claims abstract description 15
- 238000010248 power generation Methods 0.000 claims abstract description 5
- 239000003792 electrolyte Substances 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 239000011149 active material Substances 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 229910018095 Ni-MH Inorganic materials 0.000 description 1
- 229910018477 Ni—MH Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910021437 lithium-transition metal oxide Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/172—Arrangements of electric connectors penetrating the casing
-
- 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
- H01M10/04—Construction or manufacture in general
- H01M10/0431—Cells with wound or folded electrodes
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/15—Lids or covers characterised by their shape for prismatic or rectangular cells
-
- 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
- H01M50/543—Terminals
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
목적 : 캡 플레이트와, 그 캡 플레이트를 관통하여 외부로 연결되는 인출단자의 변형를 방지할 수 있는 밀폐전지를 제공함에 목적을 두고 있다.PURPOSE: It is an object of the present invention to provide a cap plate and a sealed battery that can prevent deformation of a lead terminal connected to the outside through the cap plate.
구성 : 발전요소를 수납하는 캔(4)과, 그 캔의 상측 개구에 결합되는 캡 플레이트(60)와, 상기 캡 플레이트를 관통하여 형성된 사각 구멍(62)과, 상기 사각 구멍으로 삽입되는 것으로 사각의 중공 로드(82)와 안착부(88)를 갖는 가스켓(80)과, 상기 가스켓에 형성된 중공(90)과, 상기 중공으로 삽입되고 안착부에 결합되며 상기 가스켓과 함께 절연체(140)를 개재하여 상기 캡 플레이트의 상측 및 하측에서 밀봉 결합되는 전극 인출단자(120)를 포함하고, 상기 발전요소의 한 전극을 각형 캔과 전기적으로 연결하며, 나머지 한 전극은 인출단자와 전기적으로 연결한 구성을 포함한다.Composition: A can 4 for storing a power generating element, a cap plate 60 coupled to an upper opening of the can, a square hole 62 formed through the cap plate, and a square hole inserted into the square hole. A gasket (80) having a hollow rod (82) and a seating portion (88), a hollow (90) formed in the gasket, and inserted into the hollow and coupled to the seating portion, and interposing an insulator (140) with the gasket. And an electrode lead terminal 120 sealingly coupled to the upper and lower sides of the cap plate, and electrically connecting one electrode of the power generation element to the square can, and the other electrode electrically connected to the lead terminal. Include.
효과 : 가스켓이 캡 플레이트의 사각 구멍에 삽입되고, 전극 인출단자의 헤드부가 상기 가스켓의 안착되어 지지되므로 회전 변형이 방지되고, 그 결과 전지의 밀폐성 및 신뢰성이 향상되는 효과를 얻을 수 있다.Effect: Since the gasket is inserted into the square hole of the cap plate and the head of the electrode lead-out terminal is seated and supported by the gasket, rotational deformation is prevented, and as a result, the sealing and reliability of the battery can be obtained.
Description
본 발명은 케이스 내부에 수납된 전극을 케이스 외부로 연결하는 인출단자에 있어서, 그 회전 및 변형을 방지할 수 있도록 한 구성을 포함하는 밀폐전지에 관한 것이다.The present invention relates to a sealed battery including a configuration to prevent the rotation and deformation of the lead terminal for connecting the electrode stored in the case to the outside of the case.
밀폐전지는 재충전이 가능한 것으로 니켈수소(Ni-MH)전지와 리튬(Li)전지 및 리튬이온(Li-ion)전지가 주로 사용되고 있으며, 외관상으로는 원통형과 각형 전지로 구분되고 있다.Sealed batteries are rechargeable, and nickel-hydrogen (Ni-MH) batteries, lithium (Li) batteries, and lithium-ion (Li-ion) batteries are mainly used. Apparently, they are classified into cylindrical and rectangular batteries.
도 3 및 도 4는 종래 공지된 각형 밀폐전지를 보여주고 있다.3 and 4 show a conventionally known rectangular sealed battery.
도면에서와 같이 각형 밀폐전지는 정극과 부극의 사이에 세퍼레이터를 개재하여 함께 권취 및 압착하여 전극군(2)을 형성하고, 그 전극군(2)을 캔(4)의 내부에 삽입하며, 그 캔(4)의 상측 개구에 캡 플레이트(6)를 용접 결합하되, 캡 플레이트(6)의 하부에 가스켓(8)을 배치하고 그 중심에 절연체(10)를 개재하여 절연된 리벳단자(12)를 체결하고 있다. 리벳단자(12)의 상측 리벳팅부와 절연체(10)의 사이에는 전기적인 연결성을 고려하여 전극 플레이트(14)를 더 설치할 수 있다.As shown in the drawing, the rectangular sealed battery is wound and crimped together through a separator between the positive electrode and the negative electrode to form an electrode group 2, and the electrode group 2 is inserted into the can 4. The cap plate 6 is welded to the upper opening of the can 4, but the gasket 8 is disposed below the cap plate 6, and the rivet terminal 12 insulated through the insulator 10 at the center thereof. Is fastening. An electrode plate 14 may be further installed between the upper riveting portion of the rivet terminal 12 and the insulator 10 in consideration of electrical connectivity.
상기 전극군(2) 중에서 부극은 도시 생략한 단자 탭 혹은 캔(4)과 직접 접속되고, 정극은 단자 탭(16)을 통하여 리벳단자(12)에 접속된 후 외부로 연결되어진다. 여기서 상기 리벳단자(12)는 캡 플레이트(6), 가스켓(8), 절연체(10) 및 전극 플레이트(14)를 물리적으로 체결함으로써 캡 어셈블리를 구성하고, 동시에 케이스 외부로 정극을 인출하는 단자 역할을 겸하게 된다.The negative electrode of the electrode group 2 is directly connected to a terminal tab or can 4 (not shown), and the positive electrode is connected to the rivet terminal 12 through the terminal tab 16 and then connected to the outside. Here, the rivet terminal 12 constitutes a cap assembly by physically coupling the cap plate 6, the gasket 8, the insulator 10, and the electrode plate 14, and at the same time serves as a terminal for drawing the positive electrode out of the case. Will serve as
이러한 종래의 밀폐전지에서 캔(4)과 캡 플레이트(6)로 구성되는 케이스는 전지의 경량화 및 소형화 추세에 맞추어 강도가 큰 금속 재질에서 알루미늄 혹은 알루미늄 합금을 사용하는 추세로 변화되고 있다.In the conventional sealed battery, the case consisting of the can 4 and the cap plate 6 is changing to a trend of using aluminum or an aluminum alloy in a high strength metal material in accordance with the trend of light weight and miniaturization of the battery.
그러나 알루미늄 혹은 알루미늄 합금을 케이스로 사용하는 밀폐전지의 경우에는 특히 리벳단자(12)를 밀봉 결합할 때, 연성 재질인 캡 플레이트의 특성상 리벳단자의 중심을 기준으로 그 주변 쪽으로 밀려져 쉽게 변형되는 문제점이 있으며, 또한 리벳단자(12)의 결합후 작업자의 실수로 인해 절연체(10) 및 리벳단자(12)가 회전하여 실링을 손상시키는 문제점이 있다.However, in the case of a sealed battery using aluminum or an aluminum alloy as a case, especially when sealing the rivet terminal 12, it is easily deformed by being pushed toward the periphery of the center of the rivet terminal due to the characteristics of the cap plate, which is a flexible material. In addition, there is a problem in that the insulator 10 and the rivet terminal 12 is rotated to damage the seal due to the operator's mistake after the coupling of the rivet terminal 12.
그 결과 종래의 밀폐전지에서는 밀폐성 불량으로 인해 전해액이 누출되는 심각한 문제를 초래하고 있으며, 또 리벳단자의 위치 변형으로 충·방전시 프로브 핀과의 접촉 불량을 초래하게 된다.As a result, in a conventional sealed battery, a serious problem of leakage of electrolyte due to poor sealing property is caused, and a defective contact with the probe pin during charging and discharging due to the positional deformation of the rivet terminal.
이러한 문제점을 감안하여 종래에는 캡 플레이트(6)에 단차부(6a)를 형성하여 그 자체의 변형 및 상기 리벳단자(12) 및 절연체(10)의 위치 변형을 최소화하고 있으나, 그 효과가 미미한 정도에 그치고 있는 실정이다.In view of such a problem, conventionally, the step portion 6a is formed in the cap plate 6 to minimize its own deformation and the positional deformation of the rivet terminal 12 and the insulator 10, but the effect is minimal. It is just a situation.
앞서 설명한 종래 기술의 문제점을 해결하기 위한 것으로서, 본 발명은 캡 플레이트를 관통하여 외부로 연결되는 인출단자를 이용하여 캡 어셈블리를 구성함에 있어서 캡 플레이트 및 인출단자의 변형을 방지하여, 전지의 밀폐성 및 신뢰성을 향상시킬 수 있도록 함에 그 목적을 두고 있다.In order to solve the problems of the prior art described above, the present invention is to prevent the deformation of the cap plate and the extraction terminal in the configuration of the cap assembly by using the withdrawal terminal connected to the outside through the cap plate, the sealing property of the battery and The aim is to improve reliability.
이를 위하여 본 발명에서는 정극, 부극 및 전해액으로 구성되는 발전요소를 캔과 캡 플레이트로 구성된 케이스에 수납하되, 상기 캡 플레이트에 비원형의 관통 구멍을 형성하고, 상기 구멍과 같은 모양의 외주를 갖는 가스켓을 상기 구멍에 삽입하며, 상기 가스켓의 반대쪽에 절연체를 개재한 후 상기 가스켓의 중공으로 전극 인출단자를 삽입하여 밀봉 결합하므로 구성된 밀폐전지를 제안한다.To this end, in the present invention, the power generating element consisting of a positive electrode, a negative electrode, and an electrolyte is accommodated in a case consisting of a can and a cap plate, and a non-circular through hole is formed in the cap plate, and a gasket having an outer periphery having the same shape as the hole. Inserts into the hole, through the insulator on the opposite side of the gasket, and inserts the electrode lead-out terminal into the hollow of the gasket sealingly coupled to propose a configured battery.
여기서 상기한 가스켓은 비원형으로 된 상부 플레이트와 중공 로드를 포함하여 구성되고, 상기 상부 플레이트의 테두리에서 연장된 상향 플랜지를 포함하여 안착부를 구성한다. 상기 안착부에는 전극 인출단자의 비원형 헤드부가 설치되므로 회전이 방지되고, 상기 인출단자는 상기 헤드부에서 연장되어 중공을 관통하는 로드부와 절연체의 하부에 형성되는 리벳팅부를 포함하여 구성된다.In this case, the gasket includes a non-circular top plate and a hollow rod, and includes a upward flange extending from an edge of the top plate to form a seating portion. Since the non-circular head portion of the electrode lead-out terminal is installed in the seating portion, rotation is prevented, and the lead-out terminal includes a rod portion extending from the head portion and a riveting portion formed under the insulator.
이러한 구성에 따라 본 발명의 밀폐전지는 가스켓이 캡 플레이트의 비원형 구멍에 삽입되고, 전극 인출단자의 헤드부가 상기 가스켓의 안착부에 설치됨에 의해 회전 변형이 방지되는 효과를 얻을 수 있으며, 또한 상기 캡 플레이트의 측면 연신을 방지할 수 있다. 따라서 본 발명에 의하면 전지의 밀폐성 및 신뢰성을 향상시키는 효과를 얻을 수 있다.According to this configuration, the sealed battery of the present invention can obtain the effect that the rotational deformation is prevented by the gasket is inserted into the non-circular hole of the cap plate, the head portion of the electrode lead-out terminal is installed in the seating portion of the gasket. Side extension of a cap plate can be prevented. Therefore, according to this invention, the effect which improves the sealing property and reliability of a battery can be acquired.
도 1은 본 발명의 밀폐전지를 도시한 분해 사시도.1 is an exploded perspective view showing a sealed battery of the present invention.
도 2는 본 발명의 밀폐전지를 도시한 단면도.2 is a cross-sectional view showing a sealed battery of the present invention.
도 3은 종래 공지된 밀폐전지를 도시한 분해 사시도.Figure 3 is an exploded perspective view showing a conventionally known sealed battery.
도 4는 종래 밀폐전지의 단면도.4 is a cross-sectional view of a conventional sealed battery.
* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings
2-전극군 4-캔2-electrode group 4-can
60-캡 플레이트 62-구멍60-cap plate 62-hole
66-전해액 주입구 80-가스켓66-electrolyte inlet 80-gasket
82-중공 로드 84-상부 플레이트82-hollow rod 84-top plate
86-상향 플랜지 88-안착부86-upward flange 88-seat
90-중공 100-절연체90-hollow 100-insulator
120-인출단자 122-헤드부120-outer 122-head
124-로드부 126-리벳팅부124-rod part 126-riveting part
140-접속 플레이트140-connection plate
이하, 본 발명의 바람직한 실시예를 첨부 도면에 의거하여 설명한다. 참고로 종래의 구성과 동일한 부분에 대하여는 동일 부호를 부여하기로 한다.EMBODIMENT OF THE INVENTION Hereinafter, preferred embodiment of this invention is described based on an accompanying drawing. For reference, the same reference numerals are given to the same parts as in the conventional configuration.
도 1은 본 발명에 의한 밀폐전지의 조립 상태를 보여주고 있으며, 도 2는 본 발명의 조립된 상태를 보여주고 있다.1 shows an assembled state of a sealed battery according to the present invention, Figure 2 shows an assembled state of the present invention.
도면에서와 같이 본 발명의 밀폐전지는 외관상 각형 캔(4)과 그 캔(4)의 상측 개구에 용접 결합되는 캡 플레이트(60)로 구성된 케이스를 포함하며, 그 내부에 정극, 부극, 그리고 정극과 부극을 절연하는 세퍼레이터를 함께 권취하고 압착한 전극군(2)과 함께 전해액으로 구성된 발전 요소를 수납하여 이루어진다.As shown in the drawing, the sealed battery of the present invention includes a casing consisting of a rectangular can 4 and a cap plate 60 welded to an upper opening of the can 4, and having a positive electrode, a negative electrode, and a positive electrode therein. And a power generation element composed of an electrolytic solution together with the electrode group 2 wound up and compressed together with a separator for insulating the negative electrode.
상기 전극군(2) 중에서 정극 및 부극은 금속 기재에 활물질을 도포 형성하여 이루어지는 바, 특히 본 발명에서는 그 일 예로서 리튬이온의 이동에 의해 충·방전이 이루어지는 리튬(이온) 전지에 대하여 설명하고 있다. 따라서 정극은 활물질로 리튬-천이금속산화물을 사용하고, 부극은 활물질로 탄소 및 탄소복합체를 사용하여 이루어진다.In the electrode group 2, the positive electrode and the negative electrode are formed by coating and forming an active material on a metal substrate. Particularly, the present invention describes a lithium (ion) battery in which charge and discharge are performed by the movement of lithium ions. have. Therefore, the positive electrode uses lithium-transition metal oxide as the active material, and the negative electrode uses carbon and carbon composite material as the active material.
이와 같은 구성을 갖는 본 발명의 각형 밀폐전지에서 캡 플레이트(60)는 전극 인출단자(120)를 설치하기 위하여 관통 구멍(62)을 형성하게 되는 바, 그 관통 구멍(62)의 형상을 상기 인출단자(120)의 회전 변형을 방지하려는 목적에서 비원형 예를 들어, 도면에서와 같이 사각형 또는 다각형 및 타원형으로 형성한다.In the rectangular sealed battery of the present invention having the configuration as described above, the cap plate 60 forms a through hole 62 in order to install the electrode lead terminal 120, and thus the shape of the through hole 62 is extracted. For the purpose of preventing rotational deformation of the terminal 120, non-circular, for example, as shown in the figure is formed in a rectangle or polygon and oval.
또 본 발명에서는 상기 캡 플레이트(60)의 관통 구멍으로 삽입되는 가스켓(80)의 중공 로드(82)를 상기 관통 구멍(62)에 꼭 맞게 비원형으로 형성하여, 상기 캡 플레이트(60)에 대한 가스켓(80)의 회전을 방지한다. 여기서 상기 가스켓(80)은 중공 로드(82)의 상측으로 연장된 상부 플레이트(84)를 비원형으로 형성하고 있으며, 바람직하게는 캡 플레이트(60)의 형상에 맞추어 그 길이 방향으로연장 및 확대한 구조로 형성한다. 또한 상부 플레이트(84)의 테두리에는 상향 플랜지(86)를 형성하므로 박스 형태로 오목하게 된 안착부(88)를 형성하고 있다.In addition, in the present invention, the hollow rod 82 of the gasket 80 inserted into the through hole of the cap plate 60 is formed in a non-circular shape so as to fit snugly with the through hole 62, so that the cap plate 60 It prevents the gasket 80 from rotating. Here, the gasket 80 is formed in a non-circular shape of the upper plate 84 extending above the hollow rod 82, and preferably extended and enlarged in the longitudinal direction in accordance with the shape of the cap plate 60. Form into a structure. In addition, since the upward flange 86 is formed at the edge of the upper plate 84, a seating portion 88 which is concave in the form of a box is formed.
여기서 전극 인출단자(120)는 상기 가스켓(80)과 함께 그 반대쪽에 배치된 절연체(100)을 개재하여 캡 플레이트(60)와 절연되게 결합하는 바, 이때 전극 인출단자(120)의 헤드부(122)는 상기 가스켓(80)의 안착부(88)에 꼭 맞게 결합되어서 회전 변형이 방지되어진다. 또 본 발명의 전극 인출단자(120)는 헤드부(122)에서 아래쪽으로 연장되어 가스켓(80)의 중공(90)을 관통하는 로드부(124)를 포함하며, 이때 로드부(124) 및 상기 중공(90)은 종래와 마찬가지로 원형으로 이루어진다. 또한 로드부(124)의 하부에는 리벳팅부(126)가 형성되는 바, 이것은 밀봉 결합에 의해 형성되어서 절연체(100)의 하부에 배치되어진다.Here, the electrode lead terminal 120 is coupled with the gasket 80 to be insulated from the cap plate 60 through an insulator 100 disposed on the opposite side thereof, and at this time, the head portion of the electrode lead terminal 120 is formed. 122 is tightly coupled to the seating portion 88 of the gasket 80 to prevent rotational deformation. In addition, the electrode lead terminal 120 of the present invention includes a rod portion 124 extending downward from the head portion 122 and penetrating the hollow 90 of the gasket 80, wherein the rod portion 124 and the The hollow 90 is circular as in the prior art. In addition, the riveting portion 126 is formed at the lower portion of the rod portion 124, which is formed by sealing coupling and is disposed below the insulator 100.
한편 전극 인출단자(120)의 리벳팅부(126)와 절연체(100)의 사이에는 발전요소의 한 전극에서 인출된 단자 탭(16)과의 전기적인 연결성을 고려하여 접속 플레이트(140)를 더 설치할 수 있다.Meanwhile, a connection plate 140 is further installed between the riveting part 126 of the electrode lead terminal 120 and the insulator 100 in consideration of electrical connection with the terminal tab 16 drawn from one electrode of the power generation element. Can be.
이상에서 설명한 바와 같이 전극 인출단자(120)에 의해 조립 구성되어지는 본 발명의 캡 어셈블리는 가스켓(80)이 캡 플레이트(60)의 비원형 구멍(62)에 삽입 지지되고, 전극 인출단자(120)의 헤드부(122)가 가스켓(80)의 안착부(88)에 설치됨에 의해 회전 변형이 방지되며 견고하게 지지됨을 알 수 있다.As described above, in the cap assembly of the present invention assembled by the electrode drawing terminal 120, the gasket 80 is inserted and supported by the non-circular hole 62 of the cap plate 60, and the electrode drawing terminal 120 is supported. It can be seen that the head portion 122 of) is installed on the seating portion 88 of the gasket 80 to prevent rotational deformation and to be firmly supported.
한편 캡 어셈블리가 조립된 후 그것을 구성하는 캡 플레이트(60)는 발전요소가 수납된 캔(4)의 상부에 용접 결합되는 바, 이때 캡 플레이트(60)는 종래의 구성과 달리 단차부를 형성할 필요가 없으므로 그 두께를 증가시켜 강도를 보강할 수있다. 또 캡 플레이트(60)는 테두리에 단차(64)를 두어 캔(4)과의 조립을 용이하게 하며, 전극 인출단자(120)의 결합에 의한 측면 연신을 억제하는 구조로 이루어진다.Meanwhile, after the cap assembly is assembled, the cap plate 60 constituting the cap assembly is welded to the upper portion of the can 4 in which the power generation element is accommodated. In this case, the cap plate 60 needs to form a step unlike the conventional configuration. Since the thickness can be increased, the strength can be reinforced. In addition, the cap plate 60 is provided with a step 64 on the rim to facilitate assembly with the can 4, and has a structure that suppresses the side stretching by the coupling of the electrode lead terminal 120.
캔(4)과 캡 플레이트(60)의 용접후, 상기 캡 플레이트(60)에 형성된 전해액 주입구(66)를 통하여 전해액을 주입하고, 그 주입구(66)를 플러그(68)로 막아 밀봉하므로 밀폐전지가 이루어진다.After welding the can 4 to the cap plate 60, the electrolyte is injected through the electrolyte injection hole 66 formed in the cap plate 60, and the injection hole 66 is sealed by a plug 68 to seal the sealed battery. Is done.
이와 같은 구성에서 본 발명의 밀폐전지는 단자 탭(16)과 전극 인출단자(120)의 연결을 보다 용이하게 실현하기 위해, 전극 인출단자(120)를 캡 플레이트(60)의 중심에서 일측으로 편심되게 설치한다. 또 이때 상기 전해액 주입구(66)를 캡 플레이트(60)의 중심에 위치되게 한다.In such a configuration, in the sealed battery of the present invention, in order to more easily realize the connection between the terminal tab 16 and the electrode lead terminal 120, the electrode lead terminal 120 is eccentric from the center of the cap plate 60 to one side. Install it properly. In this case, the electrolyte injection hole 66 is positioned at the center of the cap plate 60.
이상에서 설명한 구성 및 작용을 통하여 알 수 있는 바와 같이, 본 발명의 밀폐전지는 캡 플레이트에 비원형 구멍을 형성하고, 여기에 비원형 외주를 갖는 가스켓을 삽입하고, 전극 인출단자의 헤드부를 상기 가스켓의 안착부에 결합되게 함으로써, 회전 변형을 방지하는 효과를 얻을 수 있다.As can be seen through the configuration and operation described above, the sealed battery according to the present invention forms a non-circular hole in the cap plate, inserts a gasket having a non-circular outer circumference, and inserts the head portion of the electrode lead-out terminal into the gasket. By being coupled to the seating portion of, the effect of preventing rotational deformation can be obtained.
또한 본 발명에 의하면 종래 캡 플레이트의 단차부를 제거하고 강도를 보강하며 캔의 상측에 용접되게 함으로써, 캡 플레이트의 측면 연신을 최소화하는 효과를 얻을 수 있다.In addition, according to the present invention by removing the step portion of the conventional cap plate, reinforcing the strength and welded to the upper side of the can, it is possible to obtain the effect of minimizing the side stretching of the cap plate.
따라서 본 발명에 의하면 전지의 밀폐성 및 신뢰성을 향상시킬 수 있다.Therefore, according to this invention, the sealing property and reliability of a battery can be improved.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019990046929A KR100325861B1 (en) | 1999-10-27 | 1999-10-27 | Sealed battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019990046929A KR100325861B1 (en) | 1999-10-27 | 1999-10-27 | Sealed battery |
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| Publication Number | Publication Date |
|---|---|
| KR20010038811A KR20010038811A (en) | 2001-05-15 |
| KR100325861B1 true KR100325861B1 (en) | 2002-03-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| KR1019990046929A Expired - Lifetime KR100325861B1 (en) | 1999-10-27 | 1999-10-27 | Sealed battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100858792B1 (en) * | 2001-12-03 | 2008-09-17 | 삼성에스디아이 주식회사 | Cap assembly and rectangular secondary battery having same |
| KR100922741B1 (en) * | 2002-04-12 | 2009-10-22 | 삼성에스디아이 주식회사 | Secondary battery |
| US12132227B2 (en) | 2021-01-19 | 2024-10-29 | Lg Energy Solution, Ltd. | Battery, and battery pack and vehicle comprising the same |
| JP7642807B2 (en) | 2021-01-19 | 2025-03-10 | エルジー エナジー ソリューション リミテッド | Batteries, battery packs including the same, and automobiles |
| US20220271403A1 (en) | 2021-02-19 | 2022-08-25 | Lg Energy Solution, Ltd. | Battery and current collector applied thereto, and battery pack and vehicle including the battery |
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1999
- 1999-10-27 KR KR1019990046929A patent/KR100325861B1/en not_active Expired - Lifetime
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