JP5330117B2 - 電極組立体及びこれを用いたリチウム二次電池 - Google Patents
電極組立体及びこれを用いたリチウム二次電池 Download PDFInfo
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims description 30
- 229910052744 lithium Inorganic materials 0.000 title claims description 30
- 239000011149 active material Substances 0.000 claims description 104
- 230000002093 peripheral effect Effects 0.000 claims description 23
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 239000007772 electrode material Substances 0.000 claims description 6
- 239000010410 layer Substances 0.000 description 46
- 239000007774 positive electrode material Substances 0.000 description 42
- 239000007773 negative electrode material Substances 0.000 description 33
- 230000001681 protective effect Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 230000020169 heat generation Effects 0.000 description 9
- 239000000463 material Substances 0.000 description 9
- -1 polyethylene Polymers 0.000 description 9
- 235000015110 jellies Nutrition 0.000 description 7
- 239000008274 jelly Substances 0.000 description 7
- 238000004804 winding Methods 0.000 description 7
- 238000010030 laminating Methods 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- 239000012141 concentrate Substances 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 229920000106 Liquid crystal polymer Polymers 0.000 description 2
- 239000004977 Liquid-crystal polymers (LCPs) Substances 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 229910000990 Ni alloy Inorganic materials 0.000 description 2
- 239000002033 PVDF binder Substances 0.000 description 2
- 239000004734 Polyphenylene sulfide Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 2
- 239000003575 carbonaceous material Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 2
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 description 2
- 239000011244 liquid electrolyte Substances 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229920001707 polybutylene terephthalate Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 239000005518 polymer electrolyte Substances 0.000 description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- H01M50/543—Terminals
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Description
11 内部空間
12 第1ケース
13 第2ケース
100 電極組立体
110 第1電極板(正極板)
111 第1電極板の集電体(正極集電体)
112 第1電極板の活物質層(正極活物質層)
113A 第1電極板の先端活物質非塗布領域(先端正極活物質非塗布領域)
113B 第1電極板の後端活物質非塗布領域(後端正極活物質非塗布領域)
120 第2電極板(負極板)
121 第2電極板の集電体(負極集電体)
122 第2電極板の活物質層(負極活物質層)
123A 第2電極板の先端活物質非塗布領域(先端負極活物質非塗布領域)
123B 第2電極板の後端活物質非塗布領域(後端負極活物質非塗布領域)
130 セパレータ
140 第1電極タブ(正極タブ)
150 第2電極タブ(負極タブ)
160 絶縁部材(保護テープ)
170、180 絶縁部材(ラミネートテープ)
Claims (9)
- 集電体の両端に活物質が塗布されていない活物質非塗布領域をそれぞれ備える第1電極板と、
集電体の両端に活物質が塗布されていない活物質非塗布領域をそれぞれ備える第2電極板と、
前記第1電極板と前記第2電極板との間に介在するセパレータと、
前記第1電極板の最も外側の一面に取り付けられる第1電極タブと、
前記第2電極板の最も外側の一面に取り付けられる第2電極タブと、
を含んだ電極組立体であって、
前記第1電極タブは、前記電極組立体が巻き取られた際に外周部側の端部側に位置する前記第1電極板の後端活物質非塗布領域の最も外周側の面に取り付けられ、
前記第2電極タブは、前記電極組立体が巻き取られた際に外周部側の端部側に位置する前記第2電極板の後端活物質非塗布領域の最も外周側の面に取り付けられ、
前記電極組立体が巻き取られた際に外周部側の端部側に位置する前記第1電極板の後端活物質非塗布領域の少なくとも一面には、絶縁部材が付着され、
前記絶縁部材は、前記電極組立体が巻き取られた際に外周部側の端部側に位置する前記第2電極板の後端活物質非塗布領域の外側の面と対向するように、前記第1電極板の前記後端活物質非塗布領域の内側の面に付着されることを特徴とする電極組立体。 - 集電体の両端に活物質が塗布されていない活物質非塗布領域をそれぞれ備える第1電極板と、
集電体の両端に活物質が塗布されていない活物質非塗布領域をそれぞれ備える第2電極板と、
前記第1電極板と前記第2電極板との間に介在するセパレータと、
前記第1電極板の最も外側の一面に取り付けられる第1電極タブと、
前記第2電極板の最も外側の一面に取り付けられる第2電極タブと、
を含んだ電極組立体であって、
前記第1電極タブは、前記電極組立体が巻き取られた際に外周部側の端部側に位置する前記第1電極板の後端活物質非塗布領域の最も外周側の面に取り付けられ、
前記第2電極タブは、前記電極組立体が巻き取られた際に外周部側の端部側に位置する前記第2電極板の後端活物質非塗布領域の最も外周側の面に取り付けられ、
前記電極組立体が巻き取られた際に外周部側の端部側に位置する前記第1電極板の後端活物質非塗布領域の少なくとも一面には、絶縁部材が付着され、
前記絶縁部材は、前記電極組立体が巻き取られた際に外周部側の端部側に位置する前記第2電極板の後端活物質非塗布領域の内側の面と対向するように、前記第1電極板の前記後端活物質非塗布領域の外側の面に付着されることを特徴とする電極組立体。 - 前記絶縁部材は、前記電極組立体が巻き取られた際に内周部に位置する前記第1電極板の先端活物質非塗布領域の少なくとも一方の面に付着されることを特徴とする請求項1に記載の電極組立体。
- 前記絶縁部材は、前記電極組立体が巻き取られた際に内周部に位置する前記第1電極板の先端活物質非塗布領域の両面に付着されることを特徴とする請求項1に記載の電極組立体。
- 前記絶縁部材は、絶縁テープであることを特徴とする請求項1に記載の電極組立体。
- 前記絶縁部材は、前記第1電極板の活物質が塗布された活物質層と前記活物質非塗布領域との境界部分に付着されるラミネートテープであることを特徴とする請求項1に記載の電極組立体。
- 前記第1電極板は正極板であることを特徴とする請求項1に記載の電極組立体。
- 前記第2電極板は負極板であることを特徴とする請求項1に記載の電極組立体。
- 前記請求項1〜8のいずれか1項に記載された電極組立体を含むリチウム二電池。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2008-0059128 | 2008-06-23 | ||
KR1020080059128A KR101009517B1 (ko) | 2008-06-23 | 2008-06-23 | 전극 조립체와 이를 이용한 리튬 이차 전지 |
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JP2010003697A JP2010003697A (ja) | 2010-01-07 |
JP5330117B2 true JP5330117B2 (ja) | 2013-10-30 |
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Country | Link |
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US (1) | US9048489B2 (ja) |
EP (1) | EP2139057B1 (ja) |
JP (1) | JP5330117B2 (ja) |
KR (1) | KR101009517B1 (ja) |
CN (1) | CN101615694B (ja) |
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KR101106377B1 (ko) * | 2009-07-16 | 2012-01-18 | 삼성에스디아이 주식회사 | 이차 전지 |
US8815437B2 (en) * | 2009-09-10 | 2014-08-26 | Samsung Sdi Co., Ltd. | Rechargeable battery |
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