KR20010038809A - Secondary battery - Google Patents
Secondary battery Download PDFInfo
- Publication number
- KR20010038809A KR20010038809A KR1019990046927A KR19990046927A KR20010038809A KR 20010038809 A KR20010038809 A KR 20010038809A KR 1019990046927 A KR1019990046927 A KR 1019990046927A KR 19990046927 A KR19990046927 A KR 19990046927A KR 20010038809 A KR20010038809 A KR 20010038809A
- Authority
- KR
- South Korea
- Prior art keywords
- plate
- secondary battery
- safety valve
- battery
- pressure
- Prior art date
Links
- 239000012212 insulator Substances 0.000 claims abstract description 7
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052751 metal Inorganic materials 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims abstract description 5
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 4
- 238000003466 welding Methods 0.000 claims description 18
- 239000003792 electrolyte Substances 0.000 claims description 6
- 238000009423 ventilation Methods 0.000 claims 2
- 230000002159 abnormal effect Effects 0.000 abstract description 3
- 239000008151 electrolyte solution Substances 0.000 abstract 1
- 238000004880 explosion Methods 0.000 abstract 1
- 150000002739 metals Chemical class 0.000 abstract 1
- 239000000463 material Substances 0.000 description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 229910052744 lithium Inorganic materials 0.000 description 7
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 239000007779 soft material Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000006182 cathode active material Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 229910021450 lithium metal oxide Inorganic materials 0.000 description 2
- 239000007773 negative electrode material Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000007774 positive electrode material Substances 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 238000007789 sealing Methods 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/574—Devices or arrangements for the interruption of current
- H01M50/578—Devices or arrangements for the interruption of current in response to pressure
-
- 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
-
- 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
-
- 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
- H01M50/147—Lids or covers
- H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
-
- 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
- H01M50/342—Non-re-sealable arrangements
- H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
-
- 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)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
Description
본 발명은 전지의 비정상적인 작용으로 내부 압력이 규정 이상으로 상승할 경우, 그 압력에 의해 파단되어서 전지의 내압을 감소시키고 안전성을 확보할 수 있도록 하는 안전수단을 구비한 이차전지에 관한 것이다.The present invention relates to a secondary battery having safety means for breaking the internal pressure of the battery when the internal pressure rises above a specified level due to abnormal action of the battery, thereby reducing the internal pressure of the battery and ensuring safety.
이차전지는 외관상 원통형과 각형으로 구분되며, 양극 및 음극 물질에 따라 여러 가지로 분류되고 있다.Secondary batteries are classified into cylindrical and rectangular in appearance, and are classified into various types according to positive and negative electrode materials.
도 1은 종래 공지된 원통형(spirally-wound) 이차전지의 일 예로서, 양극 활물질로 리튬금속 산화물을 사용하고 음극 활물질로 카본을 사용하며 전해액으로 유기 용매를 사용하는 리튬 이차전지를 보여주고 있다.FIG. 1 illustrates a lithium secondary battery using a lithium metal oxide as a cathode active material, carbon as a cathode active material, and an organic solvent as an electrolyte as an example of a conventionally known spirally-wound secondary battery.
도면에서 리튬 이차전지는 양극과 음극의 사이에 세퍼레이터를 개재하고 함께 권취하여 전극군(2)을 형성하고, 그 전극군(2)을 캔(4)의 내부에 삽입하며, 그 캔(4)의 내부에 전해액을 주입하고, 상기 캔의 상측 개구에 절연 가스켓(6)을 개재하여 캡 어셈블리(8)를 설치한 후 캔(4)의 개구 끝단을 크림핑하여 밀봉하므로 실현되어진다.In the drawing, a lithium secondary battery is wound together with a separator between a positive electrode and a negative electrode to form an electrode group 2, the electrode group 2 is inserted into the can 4, and the can 4 It is realized by injecting electrolyte into the interior of the can, installing the cap assembly 8 through the insulating gasket 6 in the upper opening of the can, and then crimping and sealing the opening end of the can 4.
캡 어셈블리(8)는 캡 커버(10)와 전류제한기(12) 및 안전변을 갖춘 플레이트(14)의 순서로 적층되고, 안전변을 갖춘 플레이트(14)의 하부에 절연체(16)를 개재하여 통기공(18a)이 있는 디스크(18)를 용접한 구성으로 되어 있으며, 상기 디스크(18)는 단자 탭(20)을 통하여 전극군(2)의 양극 혹은 음극과 연결되어진다. 아울러 전극군(2)의 다른 전극은 도시하지 않은 단자 탭 혹은 캔과의 직접 접촉에 의해 외부로 연결되어진다.The cap assembly 8 is laminated in the order of the cap cover 10, the current limiter 12, and the plate 14 with the safety valve, and the tub assembly 8 is disposed through the insulator 16 under the plate 14 with the safety valve. The disk 18 with the pores 18a is welded, and the disk 18 is connected to the positive electrode or the negative electrode of the electrode group 2 through the terminal tab 20. In addition, the other electrode of the electrode group 2 is connected to the outside by direct contact with a terminal tab or can not shown.
이렇게 구성된 리튬 이차전지는 이상 작동이나 과충전시 양극에서 전해액의 분해가 일어나고 음극에서 리튬 금속이 석출되어 쇼트될 수 있으며, 이때 내부의 압력이 규정된 압력 이상으로 상승되어 발열 및 폭발의 위험성을 수반하게 된다.The lithium secondary battery configured as described above may cause electrolyte decomposition at the anode during the abnormal operation or overcharging, and lithium metal may be short-circuited due to the precipitation of the lithium metal at the cathode. do.
이러한 점을 고려한 안전수단으로서, 종래 리튬 이차전지에서는 전지의 내부 압력이 안전변을 갖춘 플레이트(14)의 아래 면에 작용되게 하여, 그 압력이 규정 이상으로 상승할 경우 안전변을 갖춘 플레이트(14)가 상방향으로 변형되면서 디스크(18)와 용접 결합 부분이 분리되어 떨어지도록 함으로써, 전류의 흐름을 차단하고 더 이상의 반응을 억제하여 안정성을 확보하는 커런트 브레이커를 구성한다. 또한 전지의 내부 압력이 계속 상승할 경우에는 안전변을 갖춘 플레이트(14)의 취약부(혹은 안전변)(14a)가 파단되어 내부 가스를 외부로 방출한다.As a safety means in consideration of this point, in the conventional lithium secondary battery, the internal pressure of the battery is applied to the lower surface of the plate 14 with the safety valve, and when the pressure rises above the prescribed value, the plate with the safety valve 14 The disk 18 and the weld joint portion are separated from each other while being deformed upward, thereby blocking the flow of current and restraining further reaction, thereby forming a current breaker that ensures stability. In addition, when the internal pressure of the battery continues to rise, the weak portion (or safety valve) 14a of the plate 14 with the safety valve breaks to release the internal gas to the outside.
그러나 지금까지 알려진 커런트 브레이커의 작용은 안전변을 갖춘 플레이트(14)와 디스크(18)의 용접 압력에 의해 결정되는바, 기술적으로 상기 용접 압력을 정확하게 맞추기 어려우며, 특히 안전변을 갖춘 플레이트가 인장강도 95~125및 연신율 2% 이하의 하드한 재질의 알루미늄을 사용하는 바, 이것은 자체 변형량이 적기 때문에 작동(분리) 압력의 편차가 커져 전지의 오 작동을 발생시키는 문제점이 있다. 여기서 작동 압력의 편차는 용접 부품의 재료에 따라 비례하는데, 재료의 강도가 크고 연신율이 작은 하드한 재질일 경우에는 편차가 더욱 커지게 된다.However, the action of the current breaker known so far is determined by the welding pressure of the plate 14 and the disk 18 having a safety valve, which makes it difficult to accurately match the welding pressure. 125 And using a hard material aluminum of less than 2% elongation, which has a problem of causing a malfunction of the battery due to a large variation in the operating (separation) pressure due to the small amount of its own deformation. Here, the deviation of the working pressure is proportional to the material of the welded part. In the case of a hard material having a high strength of the material and a small elongation, the deviation becomes larger.
또한 안전변을 갖춘 플레이트와 디스크의 용접점은 하드한 재질일수록 외부 충격에 의해 쉽게 떨어져 분리되므로 제품 불량을 초래할 수 있다.In addition, the welding point of the plate and disk with a safety valve is separated from the harder material by an external impact, which can lead to product defects.
앞서 설명한 종래 기술의 문제점을 해소하기 위한 것으로서, 본 발명은 안전변을 갖춘 플레이트의 재료로 소프트한 재질을 사용하여, 외부 충격에 의한 용접점의 떨어짐 즉 제품 불량을 방지하고, 용접 압력을 강하게 하면서도 용접점의 분리 압력 편차를 최소로 하여 전지의 안전성 및 신뢰성을 확보할 수 있도록 한 안전수단을 갖는 이차전지를 제공함에 그 목적을 두고 있다.In order to solve the problems of the prior art described above, the present invention uses a soft material as the material of the plate with a safety valve, to prevent the welding point fall due to external impact, that is, to prevent product defects, while increasing the welding pressure while welding It is an object of the present invention to provide a secondary battery having safety measures to ensure the safety and reliability of the battery by minimizing the point separation pressure deviation.
이를 위하여 본 발명의 이차전지에서는 상호 절연된 양극과 음극 및 전해액이 수납된 캔의 상측 개구에 적층 밀봉되는 것으로, 안전변을 갖춘 플레이트와 통기공이 형성된 캡 커버 및 상기 안전변을 갖춘 플레이트의 하부에 절연체를 개재하여 용접 결합되는 통기공을 갖는 디스크를 포함하며, 상기 안전변을 갖춘 플레이트로 60∼102의 인장강도와 15% 이하의 연신율을 갖는 금속을 사용함을 특징으로 한다.To this end, in the secondary battery of the present invention, the positively insulated anode, the negative electrode, and the electrolyte are laminated and sealed in the upper opening of the can. The plate includes a safety valve, a vent cover, a cap cover, and an insulator in the lower plate. It includes a disk having a vent hole welded through the through, 60 to 102 as a plate having the safety valve It is characterized by using a metal having a tensile strength of less than 15% elongation.
안전변을 갖춘 플레이트의 재료로는 알루미늄 혹은 알루미늄 합금을 사용할 수 있고, 더욱 캔과 같은 재질의 금속을 사용할 수 있다.As a material of the plate with the safety valve, aluminum or aluminum alloy can be used, and a metal such as a can can be used.
도 1은 일반적인 이차전지의 구성을 도시한 단면도.1 is a cross-sectional view showing the configuration of a general secondary battery.
*도면의 주요 부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *
8-캡 어셈블리 14-안전변을 갖춘 플레이트8-cap assembly 14-plate with safety valve
16-절연체 18-디스크16-insulator 18-disc
18a-통기공18a-air vent
이하, 본 발명의 바람직한 실시 예를 첨부 도면에 의거하여 설명하기로 한다.Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
본 발명에서 이차전지의 구성은 도 1을 참조하여 설명한 종래 기술의 구성과 같다. 본 발명은 이차전지의 일 예로서 나선형 전극구조 및 원통형 구조를 갖는 것으로, 양극 활물질로 리튬금속 산화물을 사용하고 음극 활물질로 카본을 사용하며 전해액으로 유기 용매를 사용하는 리튬 및 리튬이온 이차전지에 대하여 설명하기로 한다. 다만 본 발명에서는 안전변을 갖춘 플레이트의 재료로 소프트한 재질을 사용하여 목적을 달성하고자 한다.In the present invention, the configuration of the secondary battery is the same as that of the prior art described with reference to FIG. 1. The present invention has a spiral electrode structure and a cylindrical structure as an example of a secondary battery, for a lithium and lithium ion secondary battery using a lithium metal oxide as a positive electrode active material, using carbon as a negative electrode active material and an organic solvent as an electrolyte Let's explain. However, the present invention is to achieve the object using a soft material as a material of the plate with a safety valve.
도 1과 같이 본 발명의 이차전지는 캔(4)의 상측 개구에 캡 어셈블리(8)를 배치하고 밀봉함에 있어, 상기 캡 어셈블리(8)의 구성으로 적어도 캡 커버(10)와 안전변을 갖춘 플레이트(14)를 적층하고, 커런트 브레이커를 구성하기 위해 안전변을 갖춘 플레이트의 하부에 절연체(16)를 개재하여 통기공(18a)이 형성된 디스크(18)를 용접 결합하여 이루어진다.As shown in FIG. 1, in the secondary battery of the present invention, the cap assembly 8 is disposed and sealed in an upper opening of the can 4, and the plate having at least the cap cover 10 and the safety valve is configured as the cap assembly 8. (14) is laminated, and the disk 18 in which the vent hole 18a was formed through the insulator 16 through the insulator 16 at the lower part of the plate with a safety valve is formed in order to construct a current breaker.
안전변을 갖춘 플레이트(14)는 60∼102의 인장강도와 15% 이하의 연신율을 갖는 금속을 사용하는바, 이것은 바람직하게 캔과 같은 재질을 갖는 알루미늄이나 알루미늄 합금을 사용하는 것이 좋으며, 초음파 용접에 의해 디스크(18)와 용접되어서 커런트 브레이커를 구성하게 된다.Plate 14 with safety valve is 60 to 102 A metal having a tensile strength of less than 15% and an elongation of 15% or less is preferably used. It is preferable to use aluminum or an aluminum alloy having a material such as a can, and is welded to the disc 18 by ultrasonic welding to provide a breaker for the current breaker. Will be constructed.
이와 같이 구성된 커런트 브레이커는 종래 보다 소트프한 재질의 안전변을 갖춘 플레이트(14)를 사용하므로 자체 변형량이 커지는 대신, 디스크(18)와의 용접을 강하게 할 수 있다. 따라서 본 발명에 의하면 용접점의 파단(분리) 압력 편차를 줄일 수 있는데, 여기서 커런트 브레이커의 파단 압력 편차는 용접 부품의 재료에 따라 비례하며, 재료의 강도가 작고 연신율이 큰 소프트한 재질일 경우에는 편차가 작아지게 된다.Since the current breaker configured as described above uses a plate 14 having a safety edge of a softer material than the conventional one, it is possible to strengthen welding with the disk 18 instead of increasing the amount of deformation. Therefore, according to the present invention, it is possible to reduce the break (separation) pressure variation of the welding spot, where the break pressure variation of the current breaker is proportional to the material of the welded part, The deviation becomes smaller.
보다 구체적으로 종래 기술과 본 발명의 커런트 브레이커가 동일 압력에서 파단된다고 할 때, 본 발명의 안전변을 갖춘 플레이트의 재질이 소프트하므로 용접 압력을 강하게 할 수 있고, - 예를 들어 종래의 용접 압력울 8 joule 이라 할 때 본 발명의 용접 압력은 20 joule 이상으로 할 수 있다 - 그 결과 용접 압력에 대한 파단 압력의 영향을 줄일 수 있으므로 커런트 브레이커의 파단 압력 편차를 최소화할 수 있는 것이다.More specifically, when the current breaker of the prior art and the present invention is broken at the same pressure, the material of the plate with the safety valve of the present invention is soft, so that the welding pressure can be strengthened, for example, the conventional welding pressure drop 8 The joule pressure of the present invention can be set to 20 joule or more as a joule-as a result it is possible to reduce the influence of the break pressure on the welding pressure, thereby minimizing the break pressure variation of the current breaker.
본 발명의 이차전지와 종래 기술의 이차전지를 비교하여 커런트 브레이커의 파단 압력을 측정한 시험 결과가 표 1에 잘 나타나 있다.Table 1 shows the test results of measuring the breaking pressure of the current breaker by comparing the secondary battery of the present invention with the secondary battery of the prior art.
표 1에 의거하여 본 발명에 의한 커런트 브레이커의 파단(작동) 압력의 편차가 축소됨을 알 수 있다.Based on Table 1, it can be seen that the variation in breaking (operating) pressure of the current breaker according to the present invention is reduced.
또한 본 발명에 의한 커런트 브레이커는 소트프한 재질의 안전변을 갖춘 플레이트(14)를 사용하고 디스크(18)와의 용접을 강하게 하므로, 외부 충격에 의한 용접점의 떨어짐을 방지할 수 있다.In addition, the current breaker according to the present invention uses a plate 14 having a soft edge of a soft material and strengthens welding with the disk 18, thereby preventing falling of the welding point due to external impact.
예를 들어 본 발명의 이차전지와 종래 기술의 이차전지를 비교하여 낙하 시험한 결과가 표 2에 잘 나타나 있다.(각 테스트는 16회 이상 실시한 것이며, 동일 전지에 대해 1m 철판 낙하, 1.6m 철판 낙하, 1.9m 콘트리트 낙하를 실시함.)For example, the result of drop test comparing the secondary battery of the present invention with the secondary battery of the prior art is shown well in Table 2. (Each test was conducted 16 times or more, and the 1 m iron plate drop and 1.6 m iron plate for the same battery. Drop, 1.9m concrete drop.)
표 2와 같이 본 발명에 의한 이차전지는 현재 실시되고 있는 전지의 안전성 실험중에서 모든 낙하 테스트에서 양호함을 알 수 있다.As shown in Table 2, it can be seen that the secondary battery according to the present invention is satisfactory in all drop tests during the safety experiment of the battery currently being conducted.
이상에서 설명한 구성 및 작용을 통하여 알 수 있는 바와 같이, 본 발명의 이차전지는 안전변을 갖춘 플레이트의 재료로 소프트한 재질을 사용하므로, 외부 충격에 의한 용접점의 떨어짐 즉 제품 불량을 방지하고, 용접 압력을 강하게 하면서도 용접점의 분리 압력 편차를 최소로 형성하여, 전지의 안전성 및 신뢰성을 확보하는 효과를 얻을 수 있다.As can be seen through the configuration and operation described above, the secondary battery of the present invention uses a soft material as the material of the plate with a safety valve, it prevents falling of the welding point due to external impact, that is, product failure, welding It is possible to obtain the effect of ensuring the safety and reliability of the battery by minimizing the separation pressure deviation of the welding point while increasing the pressure.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019990046927A KR100615159B1 (en) | 1999-10-27 | 1999-10-27 | Secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019990046927A KR100615159B1 (en) | 1999-10-27 | 1999-10-27 | Secondary battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20010038809A true KR20010038809A (en) | 2001-05-15 |
| KR100615159B1 KR100615159B1 (en) | 2006-08-25 |
Family
ID=19617213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019990046927A KR100615159B1 (en) | 1999-10-27 | 1999-10-27 | Secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR100615159B1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100670492B1 (en) * | 2004-11-29 | 2007-01-16 | 삼성에스디아이 주식회사 | Can for Lithium Secondary Battery and Lithium Secondary Battery using the Same |
| US8460820B2 (en) | 2010-07-12 | 2013-06-11 | Samsung Sdi Co., Ltd. | Secondary battery |
| EP2731162A1 (en) * | 2012-11-09 | 2014-05-14 | Vitzrocell Co., Ltd. | Lithium battery with excellent safety |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990041761A (en) * | 1997-11-24 | 1999-06-15 | 손욱 | Secondary battery cap assembly and assembly method |
-
1999
- 1999-10-27 KR KR1019990046927A patent/KR100615159B1/en not_active IP Right Cessation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100670492B1 (en) * | 2004-11-29 | 2007-01-16 | 삼성에스디아이 주식회사 | Can for Lithium Secondary Battery and Lithium Secondary Battery using the Same |
| US8460820B2 (en) | 2010-07-12 | 2013-06-11 | Samsung Sdi Co., Ltd. | Secondary battery |
| EP2731162A1 (en) * | 2012-11-09 | 2014-05-14 | Vitzrocell Co., Ltd. | Lithium battery with excellent safety |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100615159B1 (en) | 2006-08-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2337110A1 (en) | Cap assembly with improved stability and cylindrical secondary battery including the same | |
| US6346344B1 (en) | Circuit breaker for secondary battery | |
| US9350004B2 (en) | Cylindrical secondary battery | |
| JP2012015102A (en) | Secondary battery | |
| CA2232892C (en) | Cap assembly for rectangular battery | |
| KR19990067165A (en) | Explosion-proof sealing plate for sealed battery and manufacturing method | |
| EP2924763B1 (en) | Secondary battery | |
| KR20080003779A (en) | Secondary battery | |
| KR19990041760A (en) | Cap Assembly of Secondary Battery | |
| JP2001035467A (en) | Secondary battery | |
| US8197963B2 (en) | Lithium ion secondary battery | |
| KR20130061018A (en) | Secondary battery | |
| KR100795680B1 (en) | Secondary battery | |
| US20110117393A1 (en) | Thermo-mechanically activated current interrupter | |
| KR100274889B1 (en) | Cab assembly of prismatic secondary battery | |
| KR20170076203A (en) | Secondary battery | |
| KR100615159B1 (en) | Secondary battery | |
| US6548204B1 (en) | Sealed battery | |
| KR20010045030A (en) | Sealed battery | |
| KR100366079B1 (en) | Secondary battery | |
| KR20220130427A (en) | secondary battery | |
| US8642207B2 (en) | Cylindrical secondary battery | |
| KR102461575B1 (en) | secondary battery | |
| KR100544106B1 (en) | Can used in secondary battery | |
| KR102159974B1 (en) | Cab assembly of cylindrical secondary battery, and cylindrical secondary battery comprising the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| E701 | Decision to grant or registration of patent right | ||
| GRNT | Written decision to grant | ||
| FPAY | Annual fee payment |
Payment date: 20120720 Year of fee payment: 7 |
|
| FPAY | Annual fee payment |
Payment date: 20130723 Year of fee payment: 8 |
|
| FPAY | Annual fee payment |
Payment date: 20140730 Year of fee payment: 9 |
|
| FPAY | Annual fee payment |
Payment date: 20150721 Year of fee payment: 10 |
|
| LAPS | Lapse due to unpaid annual fee |