A device for a data and energy management in a vehicle having a connecting
arrangement via which a superordinate control unit may be connected to at
least one subordinate control system, respectively, the superordinate
control unit having a superordinate interface and the at least one
subordinate control system having a subordinate interface, using which,
the superordinate control unit and the at least one subordinate control
system exchange data of at least one electrical user via the connecting
arrangement, for the purpose of a bidirectional communication. In an
advantageous manner there is the possibility that in the case of an
energy demand by the at least one subordinate control system via a first
connecting arrangement, purposefully at least one additional connecting
arrangement is able to be deactivated and/or activated by at least one
superordinate switching arrangement of the superordinate control unit, in
order to fulfill the desired energy demand.