JPWO2005036674A1 - フィルム外装電池およびフィルム外装電池の製造方法 - Google Patents
フィルム外装電池およびフィルム外装電池の製造方法 Download PDFInfo
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- JPWO2005036674A1 JPWO2005036674A1 JP2005514556A JP2005514556A JPWO2005036674A1 JP WO2005036674 A1 JPWO2005036674 A1 JP WO2005036674A1 JP 2005514556 A JP2005514556 A JP 2005514556A JP 2005514556 A JP2005514556 A JP 2005514556A JP WO2005036674 A1 JPWO2005036674 A1 JP WO2005036674A1
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- clad battery
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- H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
- H01M50/178—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for pouch or flexible bag 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
- H01M50/547—Terminals characterised by the disposition of the terminals on the cells
- H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
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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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- H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
- H01M50/557—Plate-shaped terminals
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- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
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Abstract
Description
[第1の実施形態]
図4は本発明の第1の実施形態によるフィルム外装電池の外観を示す斜視図、図5は図4に示すフィルム外装電池の構成を示す分解斜視図、図6は図4に示すフィルム外装電池の接合部折り曲げ前の状態を示す斜視図である。なお、図5には、本発明の特徴である溝が形成されていない状態のフィルム外装電池を示している。
[第2の実施形態]
次に、図10〜図15を用いて本発明の第2の実施形態によるフィルム外装電池に関して説明する。なお、本実施形態のフィルム外装電池の基本的構造、溝の形成方法および構造は第1の実施形態でフィルム外装電池と同様であるため、詳細の説明は省略する。
[第3の実施形態]
次に、図16〜図19を用いて本発明の第3の実施形態によるフィルム外装電池に関して説明する。なお、本実施形態のフィルム外装電池の基本的構造、溝の形成方法および構造は第1の実施形態でフィルム外装電池と同様であるため、詳細の説明は省略する。
次に、本発明の具体的な実施例について、上述した第1の実施形態のフィルム外装電池1を例に挙げて、第1の実施形態の説明に用いた図を参照しつつ説明する。
本実施例では、スピネル構造を持つマンガン酸リチウム粉末、炭素質であって導電性を付与する材料、およびポリフッ化ビニリデンを90:5:5の質量比でN−メチルピロリドン(NMPと表すことがある)に混合分散、攪拌してスラリーとした。NMPの量はスラリーが適当な粘度になるように調整した。このスラリーは、ドクターブレードを用いて、正極電極板8となる厚さ20μmのアルミニウム箔の片面に均一に塗布された。塗布時には、わずかに未塗布部(アルミニウム箔が露出している部分)が筋状にできるようにした。次に、このスラリーが塗布されたアルミニウム箔を100℃で2時間真空乾燥した。その後、アルミニウム箔のもう一方の面にも同様に、スラリーを塗布し、真空乾燥させた。この際、表裏の未塗布部が一致するようにスラリーの塗布を行った。
アモルファスカーボン粉末、ポリフッ化ビニリデンを91:9の質量比でNMPに混合、分散、攪拌してスラリーとした。NMPの量はスラリーが適当な粘度になるように調整した。このスラリーを、ドクターブレードを用いて、負極電極板9となる厚さ10μmの銅箔の片面に均一に塗布した。塗布時には、わずかに未塗布部(銅箔が露出している部分)が筋状にできるようにした。次に、このスラリーが塗布されたアルミニウム箔を100℃で2時間真空乾燥した。なお、このとき負極電極板9の単位面積あたりの理論容量と正極電極板8の単位面積あたりの理論容量が1:1となるように、活物質の塗布厚を調整した。その後、銅箔のもう一方の面にも同様に、スラリーを塗布し、真空乾燥した。
上記のようにして作製した正極電極板8と負極電極板9、およびポリプロピレン層/ポリエチレン層/ポリプロピレン層の三層構造を持つマイクロポーラスシートからなるセパレータ10を図20に示すように交互に積層した。この際、最も外側の電極板は負極電極板9となるようにし、その負極電極板9のさらに外側にセパレータ10を設置した(つまり、セパレータ/負極電極板/セパレータ/正極電極板/セパレータ/・・・・・・/負極電極板/セパレータ、という順番に積層した)。
外装材としては、ナイロン層/アルミニウム層/酸変性ポリプロピレン層/ポリプロピレン層の四層構造を持つアルミラミネートフィルムである2枚の外装体フィルム2a、2bを用いた。外装体フィルム2aに、深絞り成形によってポリプロピレン層側が凹状となるように、電池要素5より一回り大きい凹部を形成することで収納部2a1とした。
Claims (11)
- 正極と負極を対向させた構造を有する電池要素と、少なくとも熱融着性樹脂層と金属薄膜層とが積層され、前記熱融着性樹脂層を内側にして前記電池要素を包囲し、周縁の接合部が熱融着されることで前記電池要素を封止する外装体フィルムを有し、前記接合部の少なくとも1辺が折り曲げられているフィルム外装電池において、
前記接合部に少なくとも1つの折り曲げ部が形成されており、前記折り曲げ部の厚みが、前記接合部における前記折り曲げ部の周囲の厚みよりも薄いことを特徴とするフィルム外装電池。 - 前記折り曲げ部が溝である請求項1に記載のフィルム外装電池。
- 前記接合部の少なくとも一方の面に前記溝が形成されている請求項2に記載のフィルム外装電池。
- 前記接合部に複数の前記折り曲げ部が形成されており、前記各折り曲げ部毎に前記接合部が折り曲げられている請求項1に記載のフィルム外装電池。
- 前記接合部に複数の前記折り曲げ部が形成されており、前記各折り曲げ部毎に前記接合部が折り曲げられている請求項2に記載のフィルム外装電池。
- 正極と負極を対向させた構造を有する電池要素と、少なくとも熱融着性樹脂層と金属薄膜層とが積層され、前記熱融着性樹脂層を内側にして前記電池要素を包囲し、周縁の接合部が熱融着されることで前記電池要素を封止する外装体フィルムを有し、前記接合部の少なくとも1辺が折り曲げられているフィルム外装電池において、
前記接合部に複数の折り曲げ部が形成されており、前記折り曲げ部の厚みが、前記接合部における前記折り曲げ部の周囲の厚みよりも薄く、前記折り曲げ部が前記接合部の少なくとも一方の面に形成された溝であり、前記各折り曲げ部毎に前記接合部が折り曲げられていることを特徴とするフィルム外装電池。 - 前記電池要素が、化学電池、キャパシタのいずれかである請求項1に記載のフィルム外装電池。
- 内部に電池要素を収納している外装体フィルムの、前記電池要素の周辺に形成されている接合部の少なくとも1つが折り曲げられているフィルム外装電池の製造方法において、
前記接合部に、前記接合部における周囲の厚みよりも薄い、少なくとも1つの折り曲げ部を形成する工程と、
前記接合部を前記折り曲げ部にて折り曲げる工程とを含むことを特徴とするフィルム外装電池の製造方法。 - 前記接合部の少なくとも一方の面を、凸部を有する部材で押圧することで前記折り曲げ部を形成する工程を含む請求項8に記載のフィルム外装電池の製造方法。
- 熱融着性を有する前記外装体フィルムの前記接合部を、前記部材による加熱および押圧により熱融着して接合する工程を含む請求項8に記載のフィルム外装電池の製造方法。
- 前記電池要素として、化学電池、キャパシタのいずれかを用意する工程を含む請求項8に記載のフィルム外装電池の製造方法。
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JP2002319375A (ja) * | 2001-04-19 | 2002-10-31 | Yuasa Corp | 密閉形電池 |
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US3907193A (en) * | 1974-04-08 | 1975-09-23 | Autoplex Corp | Plastic folding containers and process and apparatus for making same |
CN1293651C (zh) * | 1998-02-05 | 2007-01-03 | 大日本印刷株式会社 | 电池盒形成片和电池组件 |
JP3829502B2 (ja) * | 1998-10-30 | 2006-10-04 | ソニー株式会社 | 非水電解質電池 |
JP3899499B2 (ja) | 1998-11-18 | 2007-03-28 | ソニー株式会社 | 非水電解質電池 |
JP4154633B2 (ja) | 1999-03-12 | 2008-09-24 | ソニー株式会社 | 非水電解質電池 |
KR100319108B1 (ko) * | 1999-04-16 | 2001-12-29 | 김순택 | 이차 전지의 케이스 |
JP3799959B2 (ja) | 2000-05-10 | 2006-07-19 | 日本電気株式会社 | フィルムシール型電池およびその製造方法 |
JP2002025514A (ja) * | 2000-07-12 | 2002-01-25 | Nec Mobile Energy Kk | 密閉型電池 |
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2004
- 2004-09-30 KR KR1020067007430A patent/KR100819977B1/ko not_active IP Right Cessation
- 2004-09-30 JP JP2005514556A patent/JP4788889B2/ja active Active
- 2004-09-30 WO PCT/JP2004/014364 patent/WO2005036674A1/ja active Application Filing
- 2004-09-30 US US10/574,562 patent/US8697277B2/en active Active
- 2004-09-30 CN CNA2004800295074A patent/CN1864284A/zh active Pending
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JPH0556425U (ja) * | 1991-12-27 | 1993-07-27 | 積水化成品工業株式会社 | 融着函の製造に用いる溶融用熱刃 |
JPH10264244A (ja) * | 1997-03-24 | 1998-10-06 | Fp Corp | 包装容器用周側枠材とその製造方法およびそれを用いた包装用容器 |
JPH11334022A (ja) * | 1998-05-26 | 1999-12-07 | Sekisui Chem Co Ltd | 耐火被覆材の折り曲げ加工方法 |
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WO2001056093A1 (en) * | 2000-01-24 | 2001-08-02 | Mitsubishi Denki Kabushiki Kaisha | Package for material containing nonaqueous solvent and cell comprising the same |
JP2002319374A (ja) * | 2001-04-19 | 2002-10-31 | Yuasa Corp | 密閉形電池 |
JP2002319375A (ja) * | 2001-04-19 | 2002-10-31 | Yuasa Corp | 密閉形電池 |
Also Published As
Publication number | Publication date |
---|---|
KR100819977B1 (ko) | 2008-04-08 |
EP1686636A4 (en) | 2009-04-22 |
CN1864284A (zh) | 2006-11-15 |
US8697277B2 (en) | 2014-04-15 |
EP1686636A1 (en) | 2006-08-02 |
US20070009795A1 (en) | 2007-01-11 |
JP4788889B2 (ja) | 2011-10-05 |
WO2005036674A1 (ja) | 2005-04-21 |
KR20060064686A (ko) | 2006-06-13 |
US20140182119A1 (en) | 2014-07-03 |
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