JPWO2018016654A1 - 電気化学デバイス - Google Patents
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- 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
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
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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
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- H01M50/131—Primary casings; Jackets or wrappings characterised by physical properties, e.g. gas permeability, size or heat resistance
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- H01M50/172—Arrangements of electric connectors penetrating the casing
- 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
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Abstract
Description
図1A,1Bは、本発明の第1の実施形態の電気化学デバイスの一例である積層型のリチウムイオン二次電池100の構成を模式的に示している。図1Aは二次電池100の主面(扁平な面)に対して垂直上方から見た平面図であり、図1Bは図1AのA−A線断面図である。
1a 正極集電体
1b 正極活物質層
2 電極(負極)
2a 負極集電体
2b 負極活物質層
3 セパレータ
4 電極組立体
5 電解液
6 フィルム
6a 金属箔
6b 熱融着性樹脂層
6c 他の樹脂層
7 電極端子(正極端子)
8 電極端子(負極端子)
9 シーラント
10 外装容器
100 電気化学デバイス(リチウムイオン二次電池)
S1 第1の封止部
S2 第2の封止部
Claims (7)
- 2種類の電極がセパレータを介して積層または巻回されている電極組立体と、前記電極組立体を収容する外装容器と、を含み、
前記電極には電極端子が接続されており、前記電極端子は前記外装容器の内部から外部に延出しており、
前記外装容器はフィルムからなり、前記フィルムが前記電極組立体を覆った状態で、前記電極組立体の周縁部の外側で重なり合う前記フィルム同士が互いに接合されることによって形成されており、
前記フィルムの、前記電極組立体の周縁部の外側で重なり合って接合されている部分は、前記電極端子を挟んで重なり合った状態で接合されている第1の封止部と、前記電極端子が介在せずに直接重なり合った状態で接合されている第2の封止部とを含み、
前記フィルムの、前記電極組立体の平面部に重なる位置の厚さを1とすると、前記電極組立体の角部に当接する位置の厚さは0.85〜0.95、前記第1の封止部における厚さは0.65〜0.85、前記第2の封止部における厚さは0.55〜0.75であり、前記第1の封止部における厚さは前記第2の封止部における厚さよりも厚いことを特徴とする、電気化学デバイス。 - 前記フィルムの前記第1の封止部における厚さは前記第2の封止部における厚さの1.1〜1.2倍である、請求項1に記載の電気化学デバイス。
- 2種類の電極がセパレータを介して積層または巻回されている電極組立体と、前記電極組立体を収容する外装容器と、を含み、
前記電極には電極端子が接続されており、前記電極端子は前記外装容器の内部から外部に延出しており、
前記外装容器はフィルムからなり、
前記フィルムは、金属箔の少なくとも一方の面に熱融着性樹脂層が形成されたラミネートフィルムであり、
前記外装容器は、前記フィルムが前記電極組立体を覆った状態で、前記電極組立体の周縁部の外側で重なり合う前記熱融着性樹脂層同士が互いに接合されることによって形成されており、
前記フィルムの、前記電極組立体の周縁部の外側で前記熱融着性樹脂層同士が重なり合って接合されている部分は、前記熱融着性樹脂層同士が前記電極端子を挟んで重なり合った状態で接合されている第1の封止部と、前記電極端子が介在せずに前記熱融着性樹脂層同士が直接重なり合った状態で接合されている第2の封止部とを含み、
前記フィルムの前記熱融着性樹脂層の、前記電極組立体の平面部に重なる位置の厚さを1とすると、前記電極組立体の角部に当接する位置の厚さは0.85〜0.95、前記第1の封止部における厚さは0.65〜0.85、前記第2の封止部における厚さは0.55〜0.75であり、前記第1の封止部における厚さは前記第2の封止部における厚さよりも厚いことを特徴とする、電気化学デバイス。 - 前記フィルムの前記熱融着性樹脂層の、前記第1の封止部における厚さは前記第2の封止部における厚さの1.1〜1.2倍である、請求項3に記載の電気化学デバイス。
- 前記フィルムの前記熱融着性樹脂層の、前記電極組立体の平面部に重なる位置の厚さは50〜200μmである、請求項3または4に記載の電気化学デバイス。
- 前記フィルムは、前記金属箔の一方の面に前記熱融着性樹脂層が形成され、他方の面に他の樹脂層が形成されたものである、請求項3から5のいずれか1項に記載の電気化学デバイス。
- 前記第1の封止部は前記外装容器の1つの辺において並んで配置されており、前記第2の封止部は前記第1の封止部同士の間に位置している、請求項1から6のいずれか1項に記載の電気化学デバイス。
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PCT/JP2017/026660 WO2018016654A1 (ja) | 2016-07-22 | 2017-07-24 | 電気化学デバイス |
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WO2018026007A1 (ja) * | 2016-08-05 | 2018-02-08 | 大日本印刷株式会社 | 電池用包装材料及び電池 |
US11830672B2 (en) | 2016-11-23 | 2023-11-28 | KYOCERA AVX Components Corporation | Ultracapacitor for use in a solder reflow process |
JP7206873B2 (ja) * | 2018-12-07 | 2023-01-18 | 大日本印刷株式会社 | 蓄電デバイスの製造方法及び蓄電デバイスの品質管理方法 |
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JP2001297738A (ja) * | 2000-04-17 | 2001-10-26 | Yuasa Corp | 密閉形電池および密閉形電池の製造方法 |
JP2006164868A (ja) * | 2004-12-10 | 2006-06-22 | Sony Corp | 電池 |
WO2015141772A1 (ja) * | 2014-03-19 | 2015-09-24 | 凸版印刷株式会社 | 二次電池 |
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JP2001176465A (ja) | 1999-12-20 | 2001-06-29 | Dainippon Printing Co Ltd | 電池用積層フィルムおよびそれを用いた電池用容器 |
JP4363017B2 (ja) | 2002-09-20 | 2009-11-11 | 日本電気株式会社 | 電池および電池の製造方法 |
KR101074022B1 (ko) * | 2007-08-10 | 2011-10-17 | 주식회사 엘지화학 | 향상된 안전성의 이차전지 |
CN102414864A (zh) * | 2009-03-02 | 2012-04-11 | 株式会社Lg化学 | 软包及包括其的二次电池 |
JP2012064459A (ja) * | 2010-09-16 | 2012-03-29 | Hitachi Maxell Energy Ltd | 非水電解質電池 |
JP5644404B2 (ja) | 2010-11-17 | 2014-12-24 | ソニー株式会社 | 非水電解質電池 |
WO2012114162A1 (en) * | 2011-02-26 | 2012-08-30 | Etv Energy Ltd. | Pouch cell comprising an empty -volume defining component |
CN103400951B (zh) * | 2013-07-08 | 2015-07-08 | 连云港申元电子科技有限公司 | 锂离子电池铝塑挤出复合膜及其制备方法 |
KR102073192B1 (ko) * | 2013-08-07 | 2020-02-04 | 삼성에스디아이 주식회사 | 파우치형 배터리셀 |
WO2016047790A1 (ja) * | 2014-09-26 | 2016-03-31 | 大日本印刷株式会社 | 電池用包装材料 |
CN109075268B (zh) * | 2016-04-14 | 2021-04-30 | 大日本印刷株式会社 | 电池用包装材料、其制造方法、电池用包装材料的成型时的不良判定方法、铝合金箔 |
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JP2001297738A (ja) * | 2000-04-17 | 2001-10-26 | Yuasa Corp | 密閉形電池および密閉形電池の製造方法 |
JP2006164868A (ja) * | 2004-12-10 | 2006-06-22 | Sony Corp | 電池 |
WO2015141772A1 (ja) * | 2014-03-19 | 2015-09-24 | 凸版印刷株式会社 | 二次電池 |
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WO2018016654A1 (ja) | 2018-01-25 |
US20190189978A1 (en) | 2019-06-20 |
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