JPWO2020158137A1 - 積層型二次電池 - Google Patents
積層型二次電池 Download PDFInfo
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Abstract
Description
Claims (13)
- 少なくとも1つの正極板と少なくとも1つの負極板とが、異なる材質で形成された多孔質の2層を含む複数層状のセパレータを介して積層された電極体と、絶縁材からなるシートを折り重ねて形成され、前記電極体を収容した絶縁ホルダ及び電解液を共に収容した外装ケースとを有し、前記外装ケースは、底面、前記底面から立設した複数の側壁、及び前記底面と対向して前記複数の側壁によって囲われた開口を有し、前記セパレータの少なくとも1つのうち、前記正極板、及び前記負極板における金属箔からなる芯体、及び活物質合材層の端面から露出している部分が、前記シートで形成される谷部の底線近傍と接触している、
積層型二次電池。 - 前記シートにおいて、折り重なる2つのシート要素の形状は、互いに非対称である、
請求項1記載の積層型二次電池。 - 前記シートのうち、前記セパレータの端部と対向する部分の形状が、複数の山形が連なるひだ状になっている、
請求項1または請求項2に記載の積層型二次電池。 - 前記電極体は、第1の活物質層及び前記第1の活物質層上に形成された第2の活物質層を有する電極を含む、
請求項1から請求項3のいずれか1項に記載の積層型二次電池。 - 前記第1の活物質層は、前記第2の活物質層よりも密度が大きい、
請求項4に記載の積層型二次電池。 - 前記第1の活物質層は、前記第2の活物質層よりも空隙が小さい、
請求項4に記載の積層型二次電池。 - 前記第1の活物質層の材質は、前記第2の活物質層の材質と異なる、
請求項4に記載の積層型二次電池。 - 前記第1の活物質層及び前記第1の活物質層上に形成された前記第2の活物質層を有する前記電極は、前記負極板である、
請求項4に記載の積層型二次電池。 - 前記第1の活物質層はシリコンを含んだ材料により形成される、
請求項8に記載の積層型二次電池。 - 前記セパレータは、セパレータ本体と材質が異なる多孔質層が、前記セパレータ本体の片面、または両面に少なくとも1層以上形成されている、
請求項1から請求項9のいずれか1項に記載の積層型二次電池。 - 前記セパレータに形成されている前記多孔質層はポリフッ化ビニリデン、アクリル樹脂、ポリビニルアルコール、ヘキサフルオロプロピレン、スチレンブタジエンゴム、ポリイミド、アラミド、ポリアミドイミドを少なくとも1つを含む、
請求項10に記載の積層型二次電池。 - 前記セパレータに形成されている前記多孔質層はAlを含んだ金属酸化物を含む、
請求項10に記載の積層型二次電池。 - 前記セパレータに形成されている前記多孔質層はTiを含んだ金属酸化物を含む、
請求項10に記載の積層型二次電池。
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Application Number | Priority Date | Filing Date | Title |
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JP2019012906 | 2019-01-29 | ||
JP2019012906 | 2019-01-29 | ||
PCT/JP2019/046297 WO2020158137A1 (ja) | 2019-01-29 | 2019-11-27 | 積層型二次電池 |
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JPWO2020158137A1 true JPWO2020158137A1 (ja) | 2021-12-02 |
JP7456947B2 JP7456947B2 (ja) | 2024-03-27 |
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US (1) | US20220094020A1 (ja) |
EP (1) | EP3920295A4 (ja) |
JP (1) | JP7456947B2 (ja) |
CN (1) | CN113348574B (ja) |
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WO2024086981A1 (zh) * | 2022-10-24 | 2024-05-02 | 宁德时代新能源科技股份有限公司 | 电池单体及其制造方法、电池及用电装置 |
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WO2020158137A1 (ja) | 2020-08-06 |
US20220094020A1 (en) | 2022-03-24 |
JP7456947B2 (ja) | 2024-03-27 |
EP3920295A4 (en) | 2022-08-17 |
CN113348574A (zh) | 2021-09-03 |
CN113348574B (zh) | 2024-05-14 |
EP3920295A1 (en) | 2021-12-08 |
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