JP2006012813A - 電極組立体及びこれを用いたリチウムイオン二次電池 - Google Patents
電極組立体及びこれを用いたリチウムイオン二次電池 Download PDFInfo
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title description 7
- 229910052744 lithium Inorganic materials 0.000 title description 7
- 230000002093 peripheral effect Effects 0.000 claims abstract description 86
- 239000007774 positive electrode material Substances 0.000 claims abstract description 44
- 239000007773 negative electrode material Substances 0.000 claims abstract description 34
- 239000011149 active material Substances 0.000 claims abstract description 17
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910001416 lithium ion Inorganic materials 0.000 claims abstract description 15
- 239000010410 layer Substances 0.000 claims description 85
- 238000004804 winding Methods 0.000 claims description 12
- 239000011247 coating layer Substances 0.000 claims description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 5
- 230000020169 heat generation Effects 0.000 description 4
- 239000007769 metal material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- -1 polyethylene Polymers 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 239000003575 carbonaceous material Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910000990 Ni alloy Inorganic materials 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004743 Polypropylene Substances 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
- 239000011889 copper foil Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 235000015110 jellies Nutrition 0.000 description 2
- 239000008274 jelly Substances 0.000 description 2
- 239000011244 liquid electrolyte Substances 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000005518 polymer electrolyte Substances 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- 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
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
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- H—ELECTRICITY
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- 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
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- H—ELECTRICITY
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- 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
- H01M50/534—Electrode connections inside a battery casing characterised by the material of the leads or tabs
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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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
- H01M50/536—Electrode connections inside a battery casing characterised by the method of fixing the leads to the electrodes, e.g. by welding
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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
- H01M50/50—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
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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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- 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
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
【解決手段】 正極集電体132と正極活物質層134とを備え両側に正極無地部133が形成された正極板130と負極集電体142と負極活物質層144を備え両側に負極無地部を形成した負極板及び正極板130と負極板140とを絶縁するセパレータ150を共に巻取り形成し,正極無地部133と負極無地部143とに各々固定する正極タップ136と負極タップ146とを含む電極組立体で,電極組立体の内周部から外周部に正極板130と負極板140とを巻取る際,電極組立体の幅方向を基準として電極組立体の内周部に位置する正極板130の正極無地部133領域内に電極組立体の外周部に位置する負極板140の活物質層144の終端部が位置するように巻取る。
【選択図】図4
Description
132 正極集電体
133,133a,133b 正極無地部
134 正極活物質層
136 正極タップ
140 負極板
142 負極集電体
143,143a,143b 陰極無地部
144 負極活物質層
146 負極タップ
150 セパレータ
Claims (17)
- 正極集電体と正極活物質層とを備えて両側に正極無地部が形成された正極板と,負極集電体と負極活物質層とを備えて両側に負極無地部が形成された負極板及び正極板と負極板とを絶縁させるセパレータが共に巻取られて形成され,前記正極無地部と負極無地部とに各々固定する正極タップと負極タップとを含む電極組立体において,
前記電極組立体の内周部から外周部に前記正極板と負極板とが巻取られる際,前記電極組立体の幅方向を基準として前記電極組立体の内周部に位置する前記正極板の正極無地部領域内に前記電極組立体の外周部に位置する前記負極板の活物質層の終端部が位置するように巻取られることを特徴とする電極組立体。 - 前記電極組立体の内周部に位置する前記正極板の正極無地部の終端部と前記電極組立体の外周部に位置する前記負極板の正極活物質層の終端部とが前記電極組立体の幅方向で同じ位置に形成することを特徴とする請求項1記載の電極組立体。
- 前記電極組立体の幅方向を基準として前記電極組立体の外周部に位置する前記正極板の外面と内面とに形成された正極活物質層の終端部が,前記電極組立体の内周部に位置する前記負極集電体の外面に形成する負極無地部の領域内に位置するように形成することを特徴とする請求項1記載の電極組立体。
- 前記電極組立体の幅方向を基準として前記電極組立体の内周部に位置する前記負極板の外面とに形成する負極無地部の終端部と前記電極組立体の外周部に位置する前記正極板の外面に形成された正極活物質層の終端部とが同じ位置に位置するように形成することを特徴とする請求項3記載の電極組立体。
- 前記電極組立体の内周部に位置する前記負極集電体の外面に形成する負極無地部の終端部と前記電極組立体の外周部に位置する前記正極集電体の内面に形成された正極活物質層の終端部とが前記電極組立体の幅方向を基準として同じ位置に位置するように形成することを特徴とする請求項4記載の電極組立体。
- 前記電極組立体の内周部に位置する前記正極板の正極無地部の終端部は,前記電極組立体の内周部に位置する前記負極板の内面と外面の負極活物質コーティング層の領域内において前記負極板の内面と外面の負極無地部の終端部と前記電極組立体の幅方向に所定距離離隔して位置するように形成することを特徴とする請求項1記載の電極組立体。
- 前記正極板の正極無地部の終端部と前記負極板の内面と外面の負極無地部の終端部とは2mm〜4mm離隔して位置するように形成することを特徴とする請求項6記載の電極組立体。
- 前記電極組立体の外周部に位置する前記負極板の負極活物質層の終端部は,前記電極組立体の外周部に位置する前記正極板の内面と外面の正極無地部の領域内において前記正極板の内面及び外面の正極活物質層の終端部と所定距離離隔して位置するように形成することを特徴とする請求項6記載の電極組立体。
- 前記負極板の負極活物質層の終端部と前記正極板の内面及び外面の正極活物質層の終端部とは2mm〜4mm離隔して位置するように形成することを特徴とする請求項8記載の電極組立体。
- 前記正極タップは,前記電極組立体の外周部に位置する前記正極板の正極無地部に形成され,前記電極組立体の内周部に位置する前記正極板の正極無地部の終端部から前記正極板の正極活物質層方向に所定距離離隔して位置するように形成することを特徴とする請求項1記載の電極組立体。
- 前記正極タップは,前記正極無地部の内面または外面に形成することを特徴とする請求項10記載の電極組立体。
- 前記正極タップは,前記電極組立体の内周部に位置する前記正極板の正極無地部と前記電極組立体の幅方向を中心として反対側に形成することを特徴とする請求項11記載の電極組立体。
- 前記負極タップは,前記電極組立体の内周部に位置する前記負極板の外面の負極無地部の領域内において前記負極無地部の内面または外面に形成することを特徴とする請求項10記載の電極組立体。
- 前記電極組立体の外周部に位置する前記負極板の負極無地部は前記負極板の 負極活物質層の終端部から所定幅で形成することを特徴とする請求項3記載の電極組立体。
- 前記負極無地部の終端部は,前記電極組立体の外周部が直線で形成する領域に位置するように形成することを特徴とする請求項14記載の電極組立体。
- 前記負極板の負極無地部は2mm〜4mmで形成することを特徴とする請求項15記載の電極組立体。
- 負極板と正極板及び前記負極板と正極板とを絶縁させるセパレータが共に巻取られて形成する電極組立体と,前記電極組立体が受容する缶と,前記缶の上段開口部を封入するキャッププレートと,前記キャッププレートに形成する端子通孔に絶縁されて挿入する電極端子とを備えるキャップ組立体を含むリチウムイオン二次電池において,
前記電極組立体は,請求項1〜16のいずれかに記載の電極組立体で形成することを特徴とするリチウムイオン二次電池。
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KR10-2004-0048994 | 2004-06-28 | ||
KR1020040048994A KR100601504B1 (ko) | 2004-06-28 | 2004-06-28 | 전극조립체 및 이를 이용하는 리튬이온 이차전지 |
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JP4971599B2 JP4971599B2 (ja) | 2012-07-11 |
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JP2011154989A (ja) * | 2010-01-26 | 2011-08-11 | Sb Limotive Co Ltd | 電極組立体、その製造方法及び二次電池 |
CN102332613A (zh) * | 2010-12-31 | 2012-01-25 | 东莞新能源科技有限公司 | 一种方形锂离子电池的卷绕方法 |
JP2015504589A (ja) * | 2012-11-08 | 2015-02-12 | エルジー・ケム・リミテッド | フレキシブルゼリーロール型二次電池 |
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2004
- 2004-06-28 KR KR1020040048994A patent/KR100601504B1/ko active IP Right Grant
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2005
- 2005-06-20 JP JP2005179633A patent/JP4971599B2/ja active Active
- 2005-06-28 CN CNB2005100797950A patent/CN100479232C/zh active Active
- 2005-06-28 US US11/170,763 patent/US7638238B2/en not_active Ceased
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2010
- 2010-11-11 US US12/944,668 patent/USRE42696E1/en active Active
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Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
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US7807292B2 (en) | 2006-05-17 | 2010-10-05 | Sony Corporation | Secondary battery |
US8168320B2 (en) | 2006-05-17 | 2012-05-01 | Sony Corporation | Secondary battery |
JP2011154989A (ja) * | 2010-01-26 | 2011-08-11 | Sb Limotive Co Ltd | 電極組立体、その製造方法及び二次電池 |
CN102332613A (zh) * | 2010-12-31 | 2012-01-25 | 东莞新能源科技有限公司 | 一种方形锂离子电池的卷绕方法 |
JP2015504589A (ja) * | 2012-11-08 | 2015-02-12 | エルジー・ケム・リミテッド | フレキシブルゼリーロール型二次電池 |
US9478824B2 (en) | 2012-11-08 | 2016-10-25 | Lg Chem, Ltd. | Flexible jelly-roll type secondary battery |
WO2019064806A1 (ja) * | 2017-09-29 | 2019-04-04 | パナソニック株式会社 | 非水電解質二次電池 |
JPWO2019064806A1 (ja) * | 2017-09-29 | 2020-11-26 | パナソニック株式会社 | 非水電解質二次電池 |
JP7064270B2 (ja) | 2017-09-29 | 2022-05-10 | パナソニックホールディングス株式会社 | 非水電解質二次電池 |
US11456460B2 (en) | 2017-09-29 | 2022-09-27 | Panasonic Holdings Corporation | Nonaqueous electrolyte secondary battery |
Also Published As
Publication number | Publication date |
---|---|
JP4971599B2 (ja) | 2012-07-11 |
KR100601504B1 (ko) | 2006-07-19 |
CN1722495A (zh) | 2006-01-18 |
CN100479232C (zh) | 2009-04-15 |
KR20060000100A (ko) | 2006-01-06 |
USRE42696E1 (en) | 2011-09-13 |
US7638238B2 (en) | 2009-12-29 |
US20060008701A1 (en) | 2006-01-12 |
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