AUTOMOTIVE MULTI-VOLTAGE VEHICLE ELECTRIC SYSTEM

摘要

The invention relates to an automotive multi-voltage vehicle electric system (1), comprising a generator (2), a first energy store (4), whose energy can be fed into a first low-voltage vehicle electric system branch with at least one first low-voltage consumer (7), and whose energy can be fed into a second low-voltage vehicle electric system branch with at least one second low-voltage consumer (8) by means of a controllable switching device (6), and a second energy store (3), whose energy can be fed into a high-voltage vehicle electric system branch, and whose energy can be fed into the second low-voltage vehicle electric system branch (8) by means of a DC/DC-converter (10). The controllable switching device (6) between the first switching configuration can be fed or is fed into the first low-voltage vehicle system branch by means of the DC/DC-converter (10) with energy of the second energy store (3), and a second switching configuration, in which the first low-voltage vehicle electric system can not be fed or is not fed by the DC/DC-converter (10) with energy of the second energy store (3), can be switched.