Method for managing voltage of power supply system on board of automobile, involves detecting activation of driving unit or sedentary life situation, and maintaining voltage level that is strictly higher than another voltage level

摘要

The method involves maintaining a power supply system on a voltage level (10). An activation of a driving assistance unit or a situation of sedentary life is detected, where the sedentary life is detected (11) according to speed of a vehicle and threshold speed of a wheel of the vehicle, and the threshold speed of the wheel corresponds to filtered speed of the wheel. Another voltage level that is strictly higher than the former voltage level is temporarily maintained (19) on the supply system.