Battery control assembly for a battery system and electric drivetrain for an electric vehicle

US11999262B2 · kind B2 · utility

Assignee

• VOLVO CAR CORPORATION · SE

Inventors

• Torbjorn Larsson · San Diego, US
• Jonas Forssell · Torslanda, SE
• Robert Eriksson · Kungälv, SE
• Nikitas Sidiropoulos · Öjersjö, SE
• Markus Ekström · Gothenburg, SE
• Narendar Rao Gannamaneni · Gothenburg, SE
• Jonas Björkholtz · Kärna, SE
• Yafan Zhang · Troy, US

Key dates

• Filing date: Dec 5, 2022
• Grant date: Jun 4, 2024
• Expiry date: Dec 12, 2042

Classification

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

Abstract

A battery control assembly for a battery system. The battery control assembly includes a plurality of cell-level control units, each including a cell-level switching unit being operable as a cell-level inverter. The plurality of cell-level control units are arranged in three control unit strings and the cell-level control units of each control unit string are electrically connected in series. First ends of each control unit string are electrically connected to a corresponding AC charging terminal. Second ends of the control unit strings are electrically connected in series via a first end switch and a second end switch. Moreover, at least one of the control unit strings includes an inner connection terminal. Furthermore, an electric drivetrain for an electric vehicle having such a battery control assembly is presented.