JP2019139892A - 全固体二次電池およびその製造方法 - Google Patents
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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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Abstract
Description
前記粉体積層体が、
正極粉体層および負極粉体層と、
前記正極粉体層および負極粉体層の間に配置された固体電解質層とを有し、
前記固体電解質層の外周に配置され、前記粉体積層体における固体電解質層の外側面を内側に押圧する絶縁性の押圧部材をさらに備えるものである。
押圧部材が、前記繊維状部材を介して、前記粉体積層体の外側面を内側に押圧するものである。
押圧部材が、粉体積層体における固体電解質層の外側面を内側に押圧する弾性部材であり、
前記弾性部材を前記固体電解質層の外周に配置する工程と、
前記粉体積層体および弾性部材を当該粉体積層体の厚さ方向に押圧することで、当該弾性部材に固体電解質層の外側面を内側に押圧させる工程とを具備する方法である。
粉体積層体および押圧部材を配置する工程と、
前記粉体積層体および押圧部材を、袋状の可撓性を有する外装体に収納する工程と、
前記外装体を吸引してから密封することで、当該外装体の内部と外部との圧力差により、前記押圧部材に粉体積層体における固体電解質層の外側面を内側に押圧させる工程とを具備する方法である。
以下、本発明の実施の形態1に係る全固体二次電池およびその製造方法について、図面に基づき説明する。
本発明の実施の形態2に係る全固体二次電池1は、図7に示すように、押圧部材9および粉体積層体3の間に配置された絶縁性の繊維状部材11を具備するものである。
本発明の実施の形態3に係る全固体二次電池1は、図8に示すように、押圧部材91が前記実施の形態2に係る繊維状部材11の機能も備えるものである。
本発明の実施の形態4に係る全固体二次電池1は、図10に示すように、押圧部材9が粉体積層体3のうち固体電解質層5のみを押圧する弾性部材9である。
本発明の実施の形態5に係る全固体二次電池1は、図11および図12に示すように、前記実施の形態4において、下外周部材14を使用しない代わりに、下外周部材14に相当する位置まで絶縁部材8を内側に突出させたものである。これ以外については、本発明の実施の形態5は前記実施の形態4と同一である。
本発明の実施の形態6に係る全固体二次電池1は、図13および図14に示すように、前記実施の形態4において、上外周部材16を使用しない代わりに、上外周部材16に相当する位置までの厚さを弾性部材9が有するものである。これ以外については、本発明の実施の形態6は前記実施の形態4と同一である。
本発明の実施の形態7に係る全固体二次電池1は、図15および図16に示すように、押圧部材9が粉体積層体3の正極粉体層4および負極粉体層6と固体電解質層5とを異なる力で押圧する弾性部材9である。
本発明の実施の形態8に係る全固体二次電池1は、図17および図18に示すように、押圧部材9が粉体積層体3の正極粉体層4および負極粉体層6と固体電解質層5とを異なる力で押圧する弾性部材9であるが、その構成が前記実施の形態7と異なるものである。
2 正極集電体
3 粉体積層体
4 正極粉体層
5 固体電解質層
6 負極粉体層
7 負極集電体
8 絶縁部材
9 押圧部材
10 ラミネートパック
11 繊維状部材
14 下外周部材
16 上外周部材
30 外側面
Claims (6)
- 粉体積層体を備える全固体二次電池であって、
前記粉体積層体が、
正極粉体層および負極粉体層と、
前記正極粉体層および負極粉体層の間に配置された固体電解質層とを有し、
前記固体電解質層の外周に配置され、前記粉体積層体における固体電解質層の外側面を内側に押圧する絶縁性の押圧部材をさらに備えることを特徴とする全固体二次電池。 - 押圧部材が、正極粉体層および/または負極粉体層の外周に配置され、前記正極粉体層および/または負極粉体層の外側面を内側に押圧するものであることを特徴とする請求項1に記載の全固体二次電池。
- 粉体積層体の外側面に接する絶縁性の繊維状部材をさらに備え、当該繊維状部材が繊維状の材料を含むものであり、
押圧部材が、前記繊維状部材を介して、前記粉体積層体の外側面を内側に押圧するものであることを特徴とする請求項1または2に記載の全固体二次電池。 - 押圧部材が、粉体積層体の外側面に接する繊維状の材料を含むものであることを特徴とする請求項1または2に記載の全固体二次電池。
- 請求項1乃至4のいずれか一項に記載の全固体二次電池の製造方法であって、
押圧部材が、粉体積層体における固体電解質層の外側面を内側に押圧する弾性部材であり、
前記弾性部材を前記固体電解質層の外周に配置する工程と、
前記粉体積層体および弾性部材を当該粉体積層体の厚さ方向に押圧することで、当該弾性部材に固体電解質層の外側面を内側に押圧させる工程とを具備することを特徴とする全固体二次電池の製造方法。 - 請求項1乃至4のいずれか一項に記載の全固体二次電池の製造方法であって、
粉体積層体および押圧部材を配置する工程と、
前記粉体積層体および押圧部材を、袋状の可撓性を有する外装体に収納する工程と、
前記外装体を吸引してから密封することで、当該外装体の内部と外部との圧力差により、前記押圧部材に粉体積層体における固体電解質層の外側面を内側に押圧させる工程とを具備することを特徴とする全固体二次電池の製造方法。
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JPWO2020090736A1 (ja) * | 2018-10-29 | 2021-09-09 | 株式会社村田製作所 | 固体電池 |
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