JP2008021634A - シーリング部の安全性が向上した二次電池 - Google Patents
シーリング部の安全性が向上した二次電池 Download PDFInfo
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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
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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
- H01M50/10—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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- 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
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
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- H01M50/10—Primary casings; Jackets or wrappings
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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
- H01M50/131—Primary casings; Jackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
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- H—ELECTRICITY
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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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch cells
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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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
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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
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Abstract
【解決手段】ラミネートシートは、内側樹脂層、遮断性金属層及び外側樹脂層を含む構造となっており、該ラミネートシート同士が接するシーリング部で、内側樹脂層同士は熱融着によって結合されており、これら内側樹脂層の結合部を取り囲む構造で金属層が溶接によって相互結合されており、これら金属層の結合部を取り囲む構造で外側樹脂層が熱融着または別の樹脂によって相互結合されているリチウム二次電池を提供する。
【選択図】図2
Description
11,110,111 外側樹脂層
12,120,121 遮断性金属層
13,130,131 内側樹脂層
Claims (13)
- 樹脂層と金属層を含むラミネートシートからなる電池ケースに、正極/分離膜/負極構造の電極組立体が内蔵されている二次電池であって、
前記ラミネートシートが、内側樹脂層と、遮断性金属層と、及び外側樹脂層からなり、該ラミネートシート同士が相互に接するシーリング部で、内側樹脂層同士が熱融着によって相互に結合されており、該内側樹脂層同士の結合部を被覆する構造で金属層同士が溶接によって相互に結合されており、該金属層同士の結合部を被服する構造で外側樹脂層同士が熱融着または別の樹脂によって結合されていることを特徴とする、二次電池。 - 前記外側樹脂層が、優れた機械的強度と耐候性を有する高分子樹脂を含有しており、前記内側樹脂層が、耐電解液性と熱融着性の高分子樹脂を含有していることことを特徴とする、請求項1に記載の二次電池。
- 前記外側樹脂層の高分子樹脂が、延伸ナイロンを含むことを特徴とする、請求項2に記載の二次電池。
- 前記内側樹脂層の高分子樹脂が、無延伸ポリプロピレンを含むことを特徴とする、請求項2に記載の二次電池。
- 前記金属層と内側樹脂層との間には、接着層がさらに形成されていることを特徴とする、請求項1に記載の二次電池。
- 前記外側樹脂層の厚さが5〜40μmであり、前記金属層の厚さが20〜150μmであり、前記内側樹脂層の厚さが10〜100μmであることを特徴とする、請求項1に記載の二次電池。
- 前記金属層の端部が、内側樹脂層の厚さ以上の長さで延びていることを特徴とする、請求項1に記載の二次電池。
- 前記金属層の端部が、内側樹脂層厚さの120〜200%の長さで延びていることを特徴とする、請求項7に記載の二次電池。
- 前記金属層同士の結合が、レーザー溶接で達成されることを特徴とする、請求項1に記載の二次電池。
- 前記外側樹脂層同士の結合は、
ラミネートシートの結合された端部に熱加圧圧縮を行った後、圧縮された外側樹脂層を熱鎔融させることによって互いに結合させる方式と、
前記外側樹脂層の端部を遮断性金属層の厚さ以上の長さで延長して形成し、該延長部位を熱融着させて互いに結合させる方式と、
別の樹脂によって結合させる方式のいずれかの方式によって達成されることを特徴とする、請求項1に記載の二次電池。 - 前記内側樹脂層、金属層及び外側樹脂層の端部は、対面するラミネートシートと対称をなすように内側にテーパーし連続的な傾斜面を形成し、熱融着による内側樹脂層の結合、溶接による金属層の結合、及び熱融着による外側樹脂層の結合時に、前記端部傾斜面を内側樹脂層方向に折り曲げることを特徴とする、請求項1に記載の二次電池。
- 前記電池が、高出力大容量の電池または電池パック用単位電池として使用されることを特徴とする、請求項1に記載の二次電池。
- 前記電池が、電気自動車またはハイブリッド電気自動車の電源として使用されることを特徴とする、請求項1に記載の二次電池。
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KR1020060064168A KR100879893B1 (ko) | 2006-07-10 | 2006-07-10 | 실링부의 안전성이 향상된 이차전지 |
KR10-2006-0064168 | 2006-07-10 |
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JP2008021634A true JP2008021634A (ja) | 2008-01-31 |
JP4828458B2 JP4828458B2 (ja) | 2011-11-30 |
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KR (1) | KR100879893B1 (ja) |
Cited By (24)
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JP2009245879A (ja) * | 2008-03-31 | 2009-10-22 | Sanyo Electric Co Ltd | ラミネート式電池及びそのラミネート式電池を備えた電池モジュール |
JP2011192603A (ja) * | 2010-03-16 | 2011-09-29 | Toppan Printing Co Ltd | リチウムイオン電池用容器、これを備えたリチウムイオン電池、およびリチウムイオン電池用容器の製造方法 |
JP2013004525A (ja) * | 2011-06-16 | 2013-01-07 | Sk Innovation Co Ltd | パウチ型二次電池及びその製造方法 |
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US9318733B2 (en) | 2012-12-27 | 2016-04-19 | Lg Chem, Ltd. | Electrode assembly of stair-like structure |
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