Method for operating a hybrid vehicle

US10828989B2 · kind B2 · utility

Assignee

• Voith Patent GmbH · DE

Inventors

• Vitali Lazarenka · Aalen, DE
• Jochen Lindenmaier · Herbrechtingen, DE
• Johannes Goette · Giengen an der Brenz, DE
• Bernd Gross · Langenfeld, DE

Key dates

• Filing date: Sep 19, 2017
• Grant date: Nov 10, 2020
• Expiry date: Oct 30, 2037

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/7072
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A hybrid vehicle is operated with a combustion engine, an electric machine and a gear unit. The vehicle has a first electrical system and a second electrical system as a vehicle electrical system. The first electrical system, which is operated at a higher voltage level than the second electrical system, operates the electric machine, an electrical energy storage device, an energy converter that transmits electrical power at least from the first electrical system into the second electrical system. An alternator is not used in the second electrical system. The first electrical system is a part of a transmission system that together with the components that are coupled to the transmission system is controlled by a transmission control unit. During power generation by the electric machine the energy supply of the second electrical system has a higher priority than a motor-mode support of the drive by the electric machine.