Method and control device for determining at least one characteristic value of a drivetrain which is in the installed state in an electrically drivable motor vehicle, and motor vehicle

US11724704B2 · kind B2 · utility

Assignee

• AUDI AG · DE

Inventors

• Michael Hinterberger · Großmehring, DE
• Bernhard Liebhart · Ingolstadt, DE
• Christoph Terbrack · Ingolstadt, DE
• Christian Endisch · Geisenfeld, DE

Key dates

• Filing date: Feb 6, 2020
• Grant date: Aug 15, 2023
• Expiry date: Mar 11, 2041

Classification

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

Abstract

A method for determining at least one characteristic value of a drivetrain, which drivetrain is located in the installed state in a motor vehicle that can be partially or fully electrically driven using the drivetrain and has an electrical part having electrical components and a mechanical part having mechanical components. The electrical part and the mechanical part are coupled via an electrical machine. A predetermined mechanical boundary condition for the electrical machine is set by actuating at least one of the mechanical components of the mechanical part and/or using at least one vehicle-external mechanical component. A control device generates an electrical excitation signal in the electrical part by actuating at least one of the electrical components of the electrical part and detects a response signal using a measuring device of the motor vehicle.