Method for monitoring an electrical system of a motor vehicle

US12008847B2 · kind B2 · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Lars Braun · Stuttgart, DE
• Quang-Minh Le · Hemmingen, DE

Key dates

• Filing date: Sep 16, 2021
• Grant date: Jun 11, 2024
• Expiry date: Oct 5, 2042

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R31/007
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method for monitoring an electrical system of a motor vehicle. A safety-related electrical consumer and possibly further electrical consumers are supplied by an energy accumulator. At least one model of the vehicle electrical system is provided which represents the safety-related electrical consumer and corresponding lines with associated line resistances and connection to the energy accumulator. The method includes: providing a current or power profile that will likely be necessary for at least for one specific maneuver of the motor vehicle involving the safety-related electrical consumer; determining a predicted characteristic quantity of the energy accumulator utilizing the current or power profile; determining a predicted characteristic quantity of the safety-related electrical consumer utilizing a current profile or power profile expected to be applied to the safety-related electrical consumer, the associated line resistance and the predicted characteristic quantity of the energy accumulator; evaluating the predicted characteristic quantity of the safety-related electrical consumer.