KR20070066401A - 안전성이 향상된 이차전지 - Google Patents
안전성이 향상된 이차전지 Download PDFInfo
- Publication number
- KR20070066401A KR20070066401A KR1020050127533A KR20050127533A KR20070066401A KR 20070066401 A KR20070066401 A KR 20070066401A KR 1020050127533 A KR1020050127533 A KR 1020050127533A KR 20050127533 A KR20050127533 A KR 20050127533A KR 20070066401 A KR20070066401 A KR 20070066401A
- Authority
- KR
- South Korea
- Prior art keywords
- electrode
- secondary battery
- separator
- battery
- positive electrode
- Prior art date
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Images
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
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0431—Cells with wound or folded electrodes
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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
- H01M10/00—Secondary cells; Manufacture thereof
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- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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- 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
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/105—Pouches or flexible bags
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- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/46—Separators, membranes or diaphragms characterised by their combination with electrodes
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- 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
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- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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Abstract
Description
Claims (9)
- 양극과 음극 사이에 상대적으로 큰 크기의 분리막이 개재된 상태로 권취되어 있는 전극조립체에서, 상기 분리막의 상단이 양극과 음극의 상단으로부터 돌출되어 있고, 전극조립체의 최외각 전극을 감싼 상태로 부착되는 테이프(접착테이프)가 상기 최외각 전극의 인접 분리막의 상단부에 그것의 최상단의 일부가 미접착된 상태로 부착되어 있는 이차전지.
- 제 1 항에 있어서, 상기 전극조립체에서 상대적 크기는 양극 < 음극 < 분리막의 순서이며, 그에 따라 상단 돌출부의 높이도 양극 < 음극 < 분리막의 순서인 것을 특징으로 하는 이차전지.
- 제 1 항에 있어서, 상기 최외각 전극은 양극인 것을 특징으로 하는 이차전지.
- 제 1 항에 있어서, 상기 미접착부는 0.5 내지 1.0 mm인 것을 특징으로 하는 이차전지.
- 제 1 항에 있어서, 상기 접착테이프는 최외각 전지의 외면 전체 또는 상부만을 감싸며 부착되어 있는 것을 특징으로 하는 이차전지.
- 제 5 항에 있어서, 상기 접착테이프는 최외각 전지의 외면 전체를 감싸며, 하단의 일부가 미접착된 상태로 부착되어 있는 것을 특징으로 하는 이차전지.
- 제 1 항에 있어서, 상기 전지는 각형 또는 파우치형 전지인 것을 특징으로 하는 이차전지.
- 제 7 항에 있어서, 상기 전지는 각형 전지인 것을 특징으로 하는 이차전지.
- 제 1 항에 있어서, 상기 전지는 리튬 이차전지인 것을 특징으로 하는 이차전지.
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Cited By (11)
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WO2013180378A1 (ko) * | 2012-05-29 | 2013-12-05 | 주식회사 엘지화학 | 코너부 형상이 다양한 단차를 갖는 전극 조립체, 이를 포함하는 전지셀, 전지팩 및 디바이스 |
US9196898B2 (en) | 2012-11-13 | 2015-11-24 | Lg Chem, Ltd. | Stepped electrode assembly |
US9252452B2 (en) | 2012-03-20 | 2016-02-02 | Lg Chem, Ltd. | Electrode assembly and composite electrode assembly of stair-like structure |
US9300006B2 (en) | 2012-04-05 | 2016-03-29 | Lg Chem, Ltd. | Battery cell of stair-like structure |
US9299988B2 (en) | 2012-11-21 | 2016-03-29 | Lg Chem, Ltd. | Electrode sheet including notching portion |
US9318733B2 (en) | 2012-12-27 | 2016-04-19 | Lg Chem, Ltd. | Electrode assembly of stair-like structure |
US9478773B2 (en) | 2012-03-16 | 2016-10-25 | Lg Chem, Ltd. | Battery cell of asymmetric structure and battery pack employed with the same |
US9484560B2 (en) | 2013-02-13 | 2016-11-01 | Lg Chem, Ltd. | Electric device having a round corner and including a secondary battery |
US9620789B2 (en) | 2012-03-08 | 2017-04-11 | Lg Chem, Ltd. | Battery pack of the stair-like structure |
US9786874B2 (en) | 2013-03-08 | 2017-10-10 | Lg Chem, Ltd. | Electrode having round corner |
US9954203B2 (en) | 2013-03-08 | 2018-04-24 | Lg Chem, Ltd. | Stepped electrode group stack |
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JPH05109435A (ja) * | 1991-05-24 | 1993-04-30 | Nippon Telegr & Teleph Corp <Ntt> | 円筒型非水電解液二次電池 |
KR100528898B1 (ko) * | 1999-01-25 | 2005-11-16 | 삼성에스디아이 주식회사 | 이차전지의 전극롤 |
KR100603270B1 (ko) * | 2000-02-03 | 2006-07-20 | 삼성에스디아이 주식회사 | 파우치를 외장재로 하여 권취형 전극 조립체를 내장하는 리튬 이차전지 |
JP3932096B2 (ja) | 2001-12-04 | 2007-06-20 | 日立マクセル株式会社 | 非水二次電池 |
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US9620789B2 (en) | 2012-03-08 | 2017-04-11 | Lg Chem, Ltd. | Battery pack of the stair-like structure |
US9478773B2 (en) | 2012-03-16 | 2016-10-25 | Lg Chem, Ltd. | Battery cell of asymmetric structure and battery pack employed with the same |
US9252452B2 (en) | 2012-03-20 | 2016-02-02 | Lg Chem, Ltd. | Electrode assembly and composite electrode assembly of stair-like structure |
US9548517B2 (en) | 2012-04-05 | 2017-01-17 | Lg Chem, Ltd. | Battery cell of stair-like structure |
US9300006B2 (en) | 2012-04-05 | 2016-03-29 | Lg Chem, Ltd. | Battery cell of stair-like structure |
US9225034B2 (en) | 2012-05-29 | 2015-12-29 | Lg Chem, Ltd. | Stepwise electrode assembly having variously-shaped corner and secondary battery, battery pack and device comprising the same |
WO2013180378A1 (ko) * | 2012-05-29 | 2013-12-05 | 주식회사 엘지화학 | 코너부 형상이 다양한 단차를 갖는 전극 조립체, 이를 포함하는 전지셀, 전지팩 및 디바이스 |
US9685679B2 (en) | 2012-05-29 | 2017-06-20 | Lg Chem, Ltd. | Stepwise electrode assembly having variously-shaped corner and secondary battery, battery pack and device comprising the same |
US9196898B2 (en) | 2012-11-13 | 2015-11-24 | Lg Chem, Ltd. | Stepped electrode assembly |
US10026994B2 (en) | 2012-11-13 | 2018-07-17 | Lg Chem, Ltd. | Stepped electrode assembly |
US9299988B2 (en) | 2012-11-21 | 2016-03-29 | Lg Chem, Ltd. | Electrode sheet including notching portion |
US9318733B2 (en) | 2012-12-27 | 2016-04-19 | Lg Chem, Ltd. | Electrode assembly of stair-like structure |
US9484560B2 (en) | 2013-02-13 | 2016-11-01 | Lg Chem, Ltd. | Electric device having a round corner and including a secondary battery |
US9786874B2 (en) | 2013-03-08 | 2017-10-10 | Lg Chem, Ltd. | Electrode having round corner |
US9954203B2 (en) | 2013-03-08 | 2018-04-24 | Lg Chem, Ltd. | Stepped electrode group stack |
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