METHOD FOR THE CONTROLLED CONNECTION OF A PLURALITY OF ON-BOARD POWER SYSTEM BRANCHES OF A VEHICLE, CONTROL UNIT FOR CARRYING OUT THE METHOD AND ON-BOARD POWER SYSTEM

摘要

A method for the controlled connection of a plurality of on-board power system branches (10; 20; 30) is disclosed, wherein electrical power is exchanged between a first and a third on-board power system branch (10; 30) if an uncritical supply state is present and electrical power is exchanged between a second and the third on-board power system branch (20; 30), if a critical supply state is present in a third on-board power system branch (30) or in the first on-board power system branch (10). The supply state in the first or in the third on-board power system branch (10; 30) is monitored. In a critical supply state, the first on-board power system branch (10) is disconnected from the third on-board power system branch (30) by opening a first switching device (50). After the opening process, the second on-board power system branch (20) is connected to the third on-board power system branch (30) via a second switching device (52). The first switching device (50) is actuated by a first actuation device (110), and the second switching device (52) is actuated by a second actuation device (120). The second actuation device (120) receives a switch state signal from the first actuation device and can also receive an authorization signal. The second actuation device (120) closes the second switching device only if the switch state signal signals an open first switching device (110). In addition, a control unit (40) and a vehicle on-board power system with which the method is carried out are disclosed.