KR20000066867A - Cylindrical type second battery - Google Patents
Cylindrical type second battery Download PDFInfo
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- KR20000066867A KR20000066867A KR1019990014255A KR19990014255A KR20000066867A KR 20000066867 A KR20000066867 A KR 20000066867A KR 1019990014255 A KR1019990014255 A KR 1019990014255A KR 19990014255 A KR19990014255 A KR 19990014255A KR 20000066867 A KR20000066867 A KR 20000066867A
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- South Korea
- Prior art keywords
- case
- battery
- cap
- safety
- secondary battery
- Prior art date
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- 239000003792 electrolyte Substances 0.000 claims abstract description 14
- 238000002347 injection Methods 0.000 claims abstract description 13
- 239000007924 injection Substances 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 4
- 239000004809 Teflon Substances 0.000 claims description 2
- 229920006362 Teflon® Polymers 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000000919 ceramic Substances 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 239000011149 active material Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 239000002482 conductive additive Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
Classifications
-
- 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
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
- H01M50/627—Filling ports
- H01M50/636—Closing or sealing filling ports, e.g. using lids
- H01M50/645—Plugs
- H01M50/655—Plugs specially adapted for venting
-
- 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
- H01M50/152—Lids or covers characterised by their shape for cells having curved cross-section, e.g. round or elliptic
-
- 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
- H01M50/183—Sealing members
- H01M50/186—Sealing members characterised by the disposition of the sealing members
-
- 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
- H01M50/183—Sealing members
- H01M50/19—Sealing members characterised by the material
- H01M50/193—Organic material
-
- 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
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/317—Re-sealable arrangements
- H01M50/325—Re-sealable arrangements comprising deformable valve members, e.g. elastic or flexible valve members
-
- 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
- H01M10/0422—Cells or battery with cylindrical casing
-
- 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
- H01M50/538—Connection of several leads or tabs of wound or folded electrode stacks
-
- 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)
- Secondary Cells (AREA)
- Gas Exhaust Devices For Batteries (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
본 발명은 이차 전지에 관한 것으로서, 보다 상세하게는 안전변과 전해액 주입포트의 장착 구조가 개선된 원통형 이차 전지에 관한 것이다.The present invention relates to a secondary battery, and more particularly, to a cylindrical secondary battery having an improved mounting structure of a safety valve and an electrolyte injection port.
통상적으로 이차 전지(secondary battery)는 충방전이 가능한 전지로서, 휴대폰, 노트북 컴퓨터, 컴퓨터 캠코더등 첨단 전자 기기 분야에서 널리 사용되고 있다. 최근 들어서는, 특히 대기 오염의 환경 문제 해결을 위한 전기 자동차의 실용화가 크게 기대되고 있고, 그 전원으로서, 고성능의 전기 자동차용 전지의 개발을 열망하고 있다.In general, a secondary battery is a battery that can be charged and discharged, and is widely used in high-tech electronic devices such as mobile phones, notebook computers, computer camcorders, and the like. In recent years, the practical use of electric vehicles especially for solving the environmental problem of air pollution is anticipated, and as a power source, it is eager to develop high performance electric vehicle batteries.
특히, 리튬 이차 전지는 전자 장비 전원으로서 많이 사용되고 있는 니켈-카드늄(Ni-Cd) 전지나 니켈-수소(Ni-MH) 전지보다 작동 전압이 3배에 해당되고, 단위 중량당 에너지 밀도가 우수하다는 점에서 많은 연구개발이 진행되고 있다.In particular, lithium secondary batteries have three times the operating voltage and superior energy density per unit weight than nickel-cadmium (Ni-Cd) batteries or nickel-hydrogen (Ni-MH) batteries, which are widely used as power sources for electronic equipment. There is a lot of research and development going on.
이차 전지는 여러 가지 형상으로 제조가능한데, 대표적인 형상으로는 리튬-이온 전지에 주로 사용되는 원통형 및 각형을 들 수 있다.Secondary batteries may be manufactured in various shapes, and typical shapes include cylindrical and square shapes mainly used in lithium-ion batteries.
도 1은 종래의 전기 자동차용 전지로 사용되는 원통형 전지(10)의 일 예를 도시한 것이다.1 illustrates an example of a cylindrical battery 10 used as a battery for a conventional electric vehicle.
도면을 참조하면, 상기 전지(10)는 원통형으로 된 케이스(11)와, 상기 케이스(11) 내부에 설치되는 전극 조립체(12)를 포함한다. 상기 전극 조립체(12)에는 양극(13)과 음극(14)이 세퍼레이터(15)를 사이에 두고 맨드렐(16)을 중심으로 감겨져 있다. 그리고, 상기 양극(13)과 음극(14)의 단부에는 소정 길이의 양극 탭(13a)과 음극 탭(미도시)이 상호 반대되는 변에 인출되어 있다.Referring to the drawings, the battery 10 includes a cylindrical case 11 and an electrode assembly 12 installed inside the case 11. In the electrode assembly 12, a positive electrode 13 and a negative electrode 14 are wound around the mandrel 16 with the separator 15 interposed therebetween. At the ends of the positive electrode 13 and the negative electrode 14, the positive electrode tab 13a and the negative electrode tab (not shown) of a predetermined length are drawn out at opposite sides.
상기 전극 조립체(12)의 상하부에는 디스크 형으로 된 극주(pole,16)가 설치된다. 상기 극주(16)에는 두 탭이 전극(13)(14)별로 집합되어 용접되어 있다. 상기 극주(16)의 상부에는 세라믹 와셔(17)와 세라믹 패티(18)를 절연체로 하여 캡(19)이 설치되는데, 상기 캡(19)은 복수개의 통공을 가지고 상기 케이스(11)의 내주면을 따라 그 가장자리가 부착된다.Upper and lower portions of the electrode assembly 12 are provided with poles 16 having a disk shape. Two tabs are assembled and welded to the electrodes 13 and 14 by the pole column 16. The cap 19 is installed on the pole column 16 using the ceramic washer 17 and the ceramic patty 18 as an insulator, and the cap 19 has a plurality of through holes to form an inner circumferential surface of the case 11. Thus its edges are attached.
여기서, 상기 캡(19)에는 복수개의 통공이 형성되어 있고, 상기 통공에는 전해액을 주입하기 위한 전해액 주입포트(100)와, 전지(10) 내부의 가스를 외부로 배출시키기 위한 릴리즈형 안전변(safety vent,110)이 각각 설치된다.Here, the cap 19 is formed with a plurality of through holes, the through hole the electrolyte injection port 100 for injecting the electrolyte and the release type safety valve for discharging the gas inside the battery 10 to the outside (safety) vent 110 is installed respectively.
그리고, 상기 극주(16)의 중앙부에는 소정 길이를 가지는 암나사부(16a)가 형성되어 있고, 상기 암나사부(16a)에는 보울트(120)가 체결되어 있다. 또한, 상기 캡(19) 상면으로 돌출된 극주(16)의 외주면에는 수나사부(16b)가 형성되어 있고, 상기 수나사부(16b)에는 너트(130)가 체결된다.A female screw portion 16a having a predetermined length is formed at the central portion of the pole column 16, and a bolt 120 is fastened to the female screw portion 16a. In addition, a male screw portion 16b is formed on an outer circumferential surface of the pole column 16 protruding to the upper surface of the cap 19, and a nut 130 is fastened to the male screw portion 16b.
상기와 같은 구조를 가지는 종래의 전지(10)는 전극 조립체가 상기 케이스(11) 내부에 설치된 다음, 전해액 주입포트(100)가 통공이 형성된 캡(19)에 결합된다. 또한, 안전변(110)이 또 하나의 통공이 형성된 캡(19)에 결합하게 된다.In the conventional battery 10 having the structure as described above, the electrode assembly is installed in the case 11, and then the electrolyte injection port 100 is coupled to the cap 19 in which the hole is formed. In addition, the safety valve 110 is coupled to the cap 19 is formed another hole.
이러한 전지(10)의 조립 과정은 상기 캡(19)에 복수개의 통공을 형성하고, 별도의 제조 과정을 통하여 전해액 주입포트(100)와 안전변(110)을 제조하여, 이를 통공이 형성된 캡(19)에 결합시켜야 한다. 따라서, 전지(10)의 제조 공정수가 많아지고, 이에 따른 부품수도 늘어나게 됨에 따라, 전지(10)의 구조를 단순하게 할 필요성이 있다.The assembly process of the battery 10 forms a plurality of through holes in the cap 19, and manufactures the electrolyte injection port 100 and the safety valve 110 through a separate manufacturing process, and the through holes are formed caps 19 ) Therefore, as the number of manufacturing steps of the battery 10 increases and the number of parts thereof increases, there is a need to simplify the structure of the battery 10.
본 발명은 상기와 같은 문제점을 해결하기 위하여 창안된 것으로서, 캡에 설치되는 안전변과 전해액 주입포트가 일체형으로 형성되도록 구조가 개선된 원통형 이차 전지를 제공하는데 그 목적이 있다.The present invention has been made to solve the above problems, and an object thereof is to provide a cylindrical secondary battery having an improved structure so that the safety valve installed in the cap and the electrolyte injection port are integrally formed.
도 1은 종래의 전지를 도시한 단면도,1 is a cross-sectional view showing a conventional battery,
도 2는 본 발명의 일 실시예에 따른 전지를 도시한 단면도,2 is a cross-sectional view showing a battery according to an embodiment of the present invention;
도 3은 도 2의 안전 장치를 도시한 분리 사시도.3 is an exploded perspective view showing the safety device of FIG.
＜도면의 주요 부분에 대한 부호의 간단한 설명＞<Simple explanation of the code | symbol about the main part of drawing>
10,20. 전지 11,21. 케이스10,20. Battery 11,21. case
12,22. 전극 조립체 13,23. 양극12,22. Electrode Assembly 13,23. anode
13a,23a. 양극탭 14,24. 음극13a, 23a. Anode Tab 14, 24. cathode
15,25. 세퍼레이터 16,26. 극주15,25. Separator 16,26. Drama
16a,26a,29a. 암나사부 17,27. 세라믹 와셔16a, 26a, 29a. Female thread 17,27. Ceramic washers
18,28. 세라믹 와셔 19,29. 캡18,28. Ceramic Washers 19,29. cap
30. 안전 장치 32. 밸브30. Safety device 32. Valve
33. 탄성 부재 34. 수나사부33. Elastic member 34. Male threaded portion
35. 밀봉 부재 100. 전해액 주입포트35. Sealing member 100. Electrolyte injection port
31,110. 안전변 120,200. 보울트31,110. Safety side 120,200. Bolt
130,210. 너트130,210. nut
상기와 같은 목적을 달성하기 위하여 본 발명의 원통형 이차 전지는,Cylindrical secondary battery of the present invention in order to achieve the above object,
케이스;case;
상기 케이스 내부에 설치되는 양극, 세퍼레이터, 음극으로 된 전극 조립체;An electrode assembly formed of a cathode, a separator, and a cathode installed inside the case;
상기 양극과 음극으로부터 인출되는 양극 탭과 음극탭;A positive electrode tab and a negative electrode tab drawn from the positive electrode and the negative electrode;
상기 전극 조립체의 상하부에 설치되어 상기 탭과 접속되는 복수개의 극주;A plurality of poles installed on upper and lower portions of the electrode assembly and connected to the tab;
상기 케이스와 결합되는 캡 조립체; 및A cap assembly coupled with the case; And
상기 캡 조립체에 형성된 통공에 결합되는 전해액 주입포트와 안전변이 일체로 된 안전 장치;를 포함하는 것을 특징으로 한다.And a safety device in which an electrolyte injection port and a safety valve are coupled to the through hole formed in the cap assembly.
또한, 상기 안전 장치는 안전변과, 상기 안전변의 하단부에 형성되는 수나사부와, 상기 통공이 형성된 캡 조립체의 내주벽을 따라서 형성된 암나사부를 포함하는 것을 특징으로 한다.In addition, the safety device is characterized in that it comprises a safety side, a male screw portion formed on the lower end of the safety side, and a female screw portion formed along the inner circumferential wall of the cap assembly in which the through hole is formed.
게다가, 상기 수나사부의 외주면에는 밀봉 부재가 감겨진 것을 특징으로 한다.In addition, a sealing member is wound around the outer circumferential surface of the male screw portion.
이하에서 첨부된 도면을 참조하면서 본 발명의 일 실시예에 다른 이차 전지를 상세하게 설명하고자 한다.Hereinafter, another secondary battery according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
도 2는 본 발명의 일 실시예에 따른 원통형 전지(20)를 도시한 것이고, 도 3은 도 2의 안전 장치(30)를 도시한 것이다.FIG. 2 shows a cylindrical battery 20 according to an embodiment of the invention, and FIG. 3 shows the safety device 30 of FIG. 2.
도면을 참조하면, 상기 전지(20)는 원통형으로 된 케이스(21)가 마련된다. 상기 케이스(21) 내부에는 전극 조립체(22)가 설치된다. 상기 전극 조립체(22)는 소정 폭과 길이를 가지는 직사각형의 박편으로 된 양극(23)과 음극(24)이 세퍼레이터(25)를 사이에 두고 멘드렐(26)을 중심으로 감겨진 형태이다.Referring to the drawings, the battery 20 is provided with a cylindrical case 21. An electrode assembly 22 is installed inside the case 21. The electrode assembly 22 has a rectangular foil having a predetermined width and length, and the cathode 24 is wound around the mandrel 26 with the separator 25 interposed therebetween.
상기 양극(23)은 양극 활물질용 분말에 바인더 및 도전성 첨가제등을 혼합하여 슬러리 형태의 활물질로 제조하여 집전체, 예컨대 알루미늄 포일(foil) 상에 소정 두께로 균일하게 코팅하여 제조한다. 또한, 상기 음극(24)은 음극 활물질용 분말에 바인더 및 첨가제등을 혼합하여 양극판(23)처럼 슬러리 형태의 활물질을 제조한 다음 구리 포일과 같은 집전체상에 코팅하여 제조한다. 또한, 상기 세퍼레이터(25)는 미세한 기공을 가지는 폴리머 계열, 예컨대 폴리에틸렌 쉬트등으로 제조한다.The positive electrode 23 is prepared by mixing a binder, a conductive additive, and the like with a powder for a positive electrode active material to prepare a slurry-type active material, and uniformly coating a current collector, for example, aluminum foil, to a predetermined thickness. In addition, the negative electrode 24 is prepared by mixing a binder and an additive with a powder for the negative electrode active material to prepare an active material in the form of a slurry like the positive electrode plate 23, and then coating the current collector such as copper foil. In addition, the separator 25 is made of a polymer series having fine pores, such as polyethylene sheet.
상기 양극(23)과 음극(24)의 가장자리에는 양극 탭(23a)과 음극 탭(미도시)이 단부로부터 인출되어 전극(23)(24)별로 집합된다. 상기 전극 조립체(22)의 상하부에는 양극 탭(23a)과 음극 탭에 연결되는 주상의 전기 도체인 극주(26)가 설치된다.At the edges of the positive electrode 23 and the negative electrode 24, positive electrode tabs 23a and negative electrode tabs (not shown) are drawn out from the ends and collected by the electrodes 23 and 24. Upper and lower portions of the electrode assembly 22 are provided with pole poles 26, which are columnar electrical conductors connected to the positive electrode tab 23a and the negative electrode tab.
그리고, 상기 극주(26) 상에는 세라믹 와셔(27)와 세라믹 패치(28)를 절연체로 하여 상기 케이스(21)의 내주면 가장자리를 따라서 그 외주면이 용접되는 캡(29)이 설치된다.Then, a cap 29 is provided on the pole column 26, the outer circumferential surface of which is welded along the edge of the inner circumferential surface of the case 21 with the ceramic washer 27 and the ceramic patch 28 as an insulator.
그리고, 상기 극주(26)의 중앙부에는 소정 길이를 가지는 암나사부(26a)가 형성되어 있고, 상기 암나사부(26a)에는 보울트(200)가 체결되어 외부의 버스 바아나 전도성 라인인 상기 캡(29)의 상면으로 돌출하는 상기 극주(26)와 보울트(200) 의 헤더부 사이에 위치가능하다. 또한, 캡(19)의 상면에 돌출한 극주(16)의 외주면에는 수나사부(26b)가 형성되어 있는데, 상기 수나사부(26b)에는 너트(210)가 체결된다.In addition, a female screw portion 26a having a predetermined length is formed at a central portion of the pole column 26, and a bolt 200 is fastened to the female screw portion 26a so that the cap 29 is an external bus bar or conductive line. It is possible to position between the pole 26 and the header portion of the bolt 200 protruding to the upper surface of the. In addition, a male screw portion 26b is formed on the outer circumferential surface of the pole column 16 protruding from the upper surface of the cap 19, and the nut 210 is fastened to the male screw portion 26b.
여기서, 상기 캡(29)의 일측에 형성된 통공에는 전해액 주입포트와 안전변이 일체로 형성된 안전 장치(30)가 설치된다.Here, the safety device 30 is formed in the through-hole formed on one side of the cap 29 integrally formed with the electrolyte injection port and the safety valve.
보다 상세하게는, 상기 안전 장치(30)에는 캡(29)의 통공과 상응하는 크기를 가지는 릴리즈형의 안전변(31)이 마련된다. 상기 안전변(31)에는 그 내부에 탄성 부재(33)가 탄성적으로 지지하는 밸브(32)가 설치된다.More specifically, the safety device 30 is provided with a safety valve 31 of the release type having a size corresponding to the through hole of the cap 29. The safety valve 31 is provided with a valve 32 that is elastically supported by the elastic member 33 therein.
상기 탄성 부재(33)는 밸브(32)를 전지(20)의 내측으로 가압하여 지지하고 있는데, 전지(20) 내부로부터 가스가 발생되면, 이 가스에 의하여 상측으로 탄성 바이어스되어 상기 밸브(32)를 상부로 이동시켜 가스를 배출시키는 역할을 한다.The elastic member 33 presses and supports the valve 32 to the inside of the battery 20. When gas is generated from the inside of the battery 20, the gas is elastically biased upward by the gas, so that the valve 32 It serves to discharge the gas to the upper portion.
상기 안전 장치(30)의 하단부에는 그 외주면을 따라서 수나사부(34)가 소정 길이 형성된다. 그리고, 상기 수나사부(34)에 대응하여 캡(29)의 통공에는 암나사부(29a)가 형성되어 완전 끼워맞춤이 가능하다. 이때, 상기 암나사부(29a)에 수나사부(34)가 체결되어 완전한 밀봉 상태를 유지하기 위하여, 상기 수나사부(34)의 외주면에는 밀봉 부재(35), 예컨대 테프론(teflon) 테이프가 감겨질 수 있다.A male screw portion 34 is formed at a lower end of the safety device 30 along a peripheral surface thereof. In addition, the female threaded portion 29a is formed in the through hole of the cap 29 corresponding to the male threaded portion 34, so that it can be completely fitted. In this case, in order to maintain the fully sealed state by fastening the male screw part 34 to the female screw part 29a, a sealing member 35, for example, a teflon tape may be wound on the outer circumferential surface of the male screw part 34. have.
상기와 같은 본 발명에 따른 원통형 전지(20)는 상기 케이스(21) 내부로 전극 조립체(22)를 인입한 이후에 상기 안전 장치(30)을 해제하여 상기 캡(29)의 통공을 통하여 전해액을 주입한 후, 안전 장치(30)의 하단부에 형성된 수나사부(34)를 캡(29)의 암나사부(29a)에 체결하여 결합하게 된다. 이때, 상기 밀봉 부재(35)에 의하여 완전한 밀봉이 이루어지게 된다.The cylindrical battery 20 according to the present invention releases the safety device 30 after the electrode assembly 22 is introduced into the case 21 to release the electrolyte through the through hole of the cap 29. After injection, the male screw portion 34 formed at the lower end of the safety device 30 is coupled to the female screw portion 29a of the cap 29 to be coupled. At this time, complete sealing is achieved by the sealing member 35.
이상의 설명에서와 같이, 본 발명의 원통형 전지는 캡에 설치되는 전해액 주입부와 안전변을 일체형으로 형성시킴으로써 전지의 제조 공정이 단순해지고, 부품수도 줄일 수 있다.As described above, in the cylindrical battery of the present invention, the manufacturing process of the battery is simplified and the number of parts can be reduced by integrally forming the electrolyte injection portion and the safety valve installed in the cap.
본 발명은 도면에 도시된 일 실시예를 참고로 설명되었으나 이는 예시적인 것에 불과하며, 본 기술 분야의 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 타 실시예가 가능하다는 점을 이해할 것이다. 따라서, 본 발명의 진정한 기술적 보호 범위는 첨부된 등록청구범위의 기술적 사상에 의해 정해져야 할 것이다.Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019990014255A KR100563034B1 (en) | 1999-04-21 | 1999-04-21 | Cylindrical type second battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019990014255A KR100563034B1 (en) | 1999-04-21 | 1999-04-21 | Cylindrical type second battery |
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| Publication Number | Publication Date |
|---|---|
| KR20000066867A true KR20000066867A (en) | 2000-11-15 |
| KR100563034B1 KR100563034B1 (en) | 2006-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019990014255A KR100563034B1 (en) | 1999-04-21 | 1999-04-21 | Cylindrical type second battery |
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| Country | Link |
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| KR (1) | KR100563034B1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100614387B1 (en) * | 2005-02-28 | 2006-08-21 | 삼성에스디아이 주식회사 | Can type secondary battery with sealing holder |
| KR100770098B1 (en) * | 2004-10-12 | 2007-10-24 | 삼성에스디아이 주식회사 | Secondary battery |
| KR101508400B1 (en) * | 2010-12-06 | 2015-04-06 | 주식회사 엘지화학 | Secondary Battery with Means for Supplying Electrolyte |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100917742B1 (en) | 2008-03-13 | 2009-09-15 | 삼성에스디아이 주식회사 | Cylinder type secondary battery |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980048067U (en) * | 1996-12-30 | 1998-09-25 | 양재신 | Battery of car |
| KR19990041761A (en) * | 1997-11-24 | 1999-06-15 | 손욱 | Secondary battery cap assembly and assembly method |
| KR19990041759A (en) * | 1997-11-24 | 1999-06-15 | 손욱 | Cap Assembly of Secondary Battery |
| KR100352083B1 (en) * | 1998-09-28 | 2002-11-18 | 에스케이씨 주식회사 | Structure for sealing up of lithium ion battery |
-
1999
- 1999-04-21 KR KR1019990014255A patent/KR100563034B1/en not_active IP Right Cessation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100770098B1 (en) * | 2004-10-12 | 2007-10-24 | 삼성에스디아이 주식회사 | Secondary battery |
| KR100614387B1 (en) * | 2005-02-28 | 2006-08-21 | 삼성에스디아이 주식회사 | Can type secondary battery with sealing holder |
| KR101508400B1 (en) * | 2010-12-06 | 2015-04-06 | 주식회사 엘지화학 | Secondary Battery with Means for Supplying Electrolyte |
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| KR100563034B1 (en) | 2006-03-24 |
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