All-solid-state battery stack

US11394070B2 · kind B2 · utility

Assignee

• TOYOTA JIDOSHA KABUSHIKI KAISHA · JP

Inventors

• Takumi Tanaka · Uji, JP
• Hajime Hasegawa · Chigasaki, JP
• Satomi Yamamoto
• Koichi Tanimoto · Tokyo, JP
• Sokichi OKUBO · Okazaki, JP

Key dates

• Filing date: Feb 10, 2020
• Grant date: Jul 19, 2022
• Expiry date: Jul 19, 2040

Classification

• Technology area (CPC —): General

Abstract

The invention provides an all-solid-state battery stack with high voltage. The all-solid-state battery stack of the disclosure has a plurality of monopolar battery units stacked together via insulator layers. The monopolar battery unit also has a first current collector layer, a first active material layer, a solid electrolyte layer, a second active material layer, a second current collector layer, a second active material layer, a solid electrolyte layer, a first active material layer and a first current collector layer, stacked in that order. The plurality of monopolar battery units are connected together in series.