JP4396319B2 - 電気化学デバイスの製造方法 - Google Patents
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Description
ここで、上述のような電気化学デバイスによれば、第二電極層の面積が、第一電極層の面積よりも小さいので、これら電極層の相対位置が積層方向に直交する方向に若干ずれた場合でも、電極の対向面積は第一電極層の面積のままで安定する。また、第一電極層、第二電極層及びセパレータ層を含む積層体の外周面と、セパレータ層の表面における非接触部とがいずれも樹脂部に被覆されて封止されるため、高温に曝された場合でも電解質溶液が、積層体の外周面や、特に、セパレータ層の非接触部から蒸発・飛散し難くなり、耐熱性が向上する。さらに、樹脂部が、セパレータ層の外周面だけでなく、セパレータ層の非接触部も被覆するので、樹脂部とセパレータ層との接着強度が高まり、電気化学デバイスの機械的強度が向上する。
図1は本発明の第一実施形態に係る電気化学デバイスとしての電気二重層キャパシタ1を示す断面図、図2は図1の上面図である。
次に、電気二重層キャパシタ1の作製方法(本発明の製造方法の好適な一実施形態)について説明する。
続いて、第二実施形態に係る電気二重層キャパシタ2について図9を参照して説明する。
次に、第三実施形態に係る電気二重層キャパシタ3について、図10及び図11について説明する。
以下の手順により、図1の電気二重層キャパシタ1と同様の構成を有する電気二重層キャパシタを作製した。
カソード20の面積及びセパレータ40の面積を20×25mmとし、アノード10の面積を19.5×24.5mmとする以外は実施例1と同様にして、実施例2の電気二重層キャパシタを得た。
実施例1と同じ積層体50を得た後、樹脂部70を形成せずに積層体50の面積よりも十分大きなの一対の端子板で挟み、端子板の周縁部間に樹脂を充填して封口層を形成し積層体50を密封した。このとき、積層体50の外周面50aと、封口層とは接触させなかった。
カソード20の面積及びセパレータ40の面積を20×25mmとし、アノード10の面積を19.5×24.5mmとする以外は比較例1と同様にして、比較例2の電気二重層キャパシタを得た。
Claims (4)
- 第一電極層、セパレータ層、及び第二電極層がこの順に積層された積層体を得る工程と、
前記積層体に電解質溶液を含浸する工程と、
前記積層体の外周面を樹脂で被覆する工程と、を備え、
前記積層体を得る工程では、前記第二電極層の面積を、前記セパレータ層の面積及び前記第一電極層の面積よりも小さくし、前記セパレータ層における前記第二電極層と対向する面に前記第二電極層と接触しない非接触部を前記セパレータ層の外周に沿って環状に形成する電気化学デバイスの製造方法であって、
前記積層体の外周面を樹脂で被覆する工程において、
前記セパレータの非接触部上に熱可塑性樹脂性の封止材を載置した後、前記封止材を前記セパレータに押しつけつつ前記封止材を加熱し、
前記封止材は環状形状を有し、前記封止材が前記非接触部上に載置された状態で、前記封止材の内周面は前記第二電極層の外周面を取り囲み、かつ、前記封止材は前記積層体の頂面を越えるように突出する電気化学デバイスの製造方法。 - 前記積層体の外周面を樹脂で被覆する工程において、
前記封止材が前記非接触部上に載置された状態で、前記封止材の外周面は第一電極層の外周面よりも外側に突出する請求項1に記載の電気化学デバイスの製造方法。 - 前記積層体の外周面を樹脂で被覆する工程において、
前記積層体と前記封止材とを一対の端子板で挟んだ上で、前記一方の端子板を他方の端子板に向かって押圧しつつ前記封止材を加熱する、請求項1又は2に記載の電気化学デバイスの製造方法。 - 前記封止材はポリプロピレンを含み、前記加熱温度は140〜200℃である請求項1〜3に記載の電気化学デバイスの製造方法。
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JP2009188037A (ja) * | 2008-02-04 | 2009-08-20 | Fuji Heavy Ind Ltd | 蓄電デバイス |
DE102008010811A1 (de) * | 2008-02-23 | 2009-08-27 | Daimler Ag | Einzelzelle für eine Batterie und Verfahren zur Herstellung einer Einzelzelle für eine Batterie |
DE102010055402A1 (de) * | 2010-12-21 | 2012-06-21 | Li-Tec Battery Gmbh | Verfahren und System zur Herstellung elektrischer Zellen für elektrochemische Energiespeichervorrichtungen |
US9356320B2 (en) * | 2012-10-15 | 2016-05-31 | Front Edge Technology Inc. | Lithium battery having low leakage anode |
CN105609703B (zh) * | 2015-12-25 | 2018-04-03 | 超威电源有限公司 | 一体化电极及制造方法 |
JP6888196B2 (ja) * | 2016-07-29 | 2021-06-16 | 株式会社エンビジョンAescジャパン | フィルム外装電池及びその製造方法 |
US11830672B2 (en) | 2016-11-23 | 2023-11-28 | KYOCERA AVX Components Corporation | Ultracapacitor for use in a solder reflow process |
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