Method for monitoring an electrical system of a motor vehicle

• Main Authors: Braun, Lars, Le, Quang-Minh
• Format: Patent
• Language: English
• Published: 11.06.2024
• Subjects: ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDEDFOR ELSEWHERE; CHECKING-DEVICES; GENERATING RANDOM NUMBERS; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PERFORMING OPERATIONS; PHYSICS; REGISTERING OR INDICATING THE WORKING OF MACHINES; TESTING; TIME OR ATTENDANCE REGISTERS; TRANSPORTING; VEHICLES IN GENERAL; VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR; VOTING OR LOTTERY APPARATUS

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.