Circuit arrangement for a motor vehicle, in particular for a hybrid or electric vehicle

US11724610B2 · kind B2 · utility

Assignee

• Daimler AG · DE

Inventors

• Moritz Haussmann · Atzlenbach, DE
• Christian Kloeffer · Halberstung, DE
• Jan Philipp Degel · Karlsruhe, DE
• Joerg Weigold · Karlsruhe, DE
• Urs BOEHME · Ehningen, DE
• Stefan Haehnlein · Beckstein, DE

Key dates

• Filing date: Dec 10, 2019
• Grant date: Aug 15, 2023
• Expiry date: Sep 6, 2040

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T90/14
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A circuit arrangement of a motor vehicle includes a high-voltage battery for storing electrical energy, an electric machine for driving the motor vehicle, a converter via which high-voltage direct current voltage provided by the high-voltage battery is convertible into high-voltage alternating current voltage for operating the electric machine, and a charging connection for providing electrical energy for charging the high-voltage battery. The converter is a three-stage converter having a first switch unit which is assigned to a first phase of the electric machine. The first switch unit has two switch groups connected in series which each have two insulated-gate bipolar transistors (IGBTs) connected in series, where a connection is disposed between the IGBTs of one of the two switch groups, which connection is electrically connected directly to a line of the charging connection.