Electrical energy storage system and method for operating same

US11349326B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Berengar Krieg · Gerlingen, DE
• Christoph Fischer · Stuttgart, DE
• Frank Stimm · Leonberg, DE
• Regine Mantel · Stuttgart, DE

Key dates

• Filing date: Jun 4, 2020
• Grant date: May 31, 2022
• Expiry date: Jun 4, 2040

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/70
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

Electrical energy storage system comprising a plurality of electrochemical energy stores, which are electrically connectable to primary connection poles of the electrical energy storage system for providing a primary voltage; secondary connection poles for providing a secondary voltage, wherein the secondary connection poles are electrically connectable to an electric power source by means of secondary switches; at least one first primary switch, which is electrically connected to an electrical connection between two of the electrochemical energy stores and to an electrical connection between a first secondary switch and a first secondary connection pole, wherein the electrochemical energy stores electrically connected between the electrical connection and a second primary connection pole are electrically connectable to the first secondary connection pole of the electrical energy storage system by means of the first primary switch to provide a secondary voltage, which is lower than the primary voltage.