Electrical on-board power supply operating method for motor vehicle, involves electrically separating starter network from consumer network during starting process, and supplying electrical energy to electrical consumer by energy storage

摘要

The method involves electrically separating a starter network (4) from a consumer network (3) by a semiconductor switch (16) e.g. FET, during a starting process for starting an internal combustion machine (7) of a vehicle (2) by a starter (10) within an on-board power supply (1). Electrical energy is supplied to an electrical consumer (6) e.g. car radio, of the consumer network by an electrostatic energy storage (5) e.g. double layer capacitor. The energy storage is connected to the power supply via a direct current converter (8) and operated in a high voltage level than the power supply.