On-board vehicle electrical system for charging an electrically operated vehicle, and method

US11161424B2 · kind B2 · utility

Assignee

• VITESCO TECHNOLOGIES GMBH · DE

Inventors

• Franz Pfeilschifter · Munich, DE
• Philip Georg Brockerhoff · Munich, DE
• Martin Brüll · Barbing, DE
• Matthias Töns · Regensburg, DE
• Edmund Schirmer · Nuremberg, DE
• Paul-Markus Schweizer-Berberich · Berlin, DE

Key dates

• Filing date: Jul 13, 2017
• Grant date: Nov 2, 2021
• Expiry date: Oct 9, 2037

Classification

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

Abstract

A method and a vehicle electrical system having an inverter, an electrical energy store, an electrical machine and an AC transmission terminal. The inverter has first and second sides and is configured to transmit power between these sides. Two output terminals of the inverter are connected or connectable to the energy store on the first side of the inverter. At least two phase current terminals of the inverter are connected or connectable to the electrical machine on the second side of the inverter. At least one of the charging inputs of the vehicle electrical system is connectable to a respective inner motor phase of the electrical machine by a switching device controlled by a controller. The vehicle electrical system initially charges the electrical energy store with a first voltage, and then charges the electrical energy store with a second voltage, which second voltage is higher than the first voltage.