Abstract: An electrical circuit for a vehicle includes at least one electrical contact device for an intermittently detachable electrical connection to a vehicle-external electrical network, a vehicle-internal electrical network and at least one detector device which determines if a connection exists between the contact device and the vehicle-external network. The circuit has at least one switching device which closes the electrical connection between the contact device and the vehicle-internal network depending on the connection determined between the contact device and the vehicle-external network. A method for making contact and/or breaking contact of a vehicle with a vehicle-external electrical network is also provided.

Abstract: An electrical circuit for a vehicle includes at least one electrical contact device for an intermittently detachable electrical connection to a vehicle-external electrical network, a vehicle-internal electrical network and at least one detector device which determines if a connection exists between the contact device and the vehicle-external network. The circuit has at least one switching device which closes the electrical connection between the contact device and the vehicle-internal network depending on the connection determined between the contact device and the vehicle-external network. A method for making contact and/or breaking contact of a vehicle with a vehicle-external electrical network is also provided.

Abstract: A vehicle has an electric drive, at least one energy accumulator for supplying the electric drive with electric energy, and at least one current collector for charging the energy accumulator with electric energy from a stationary power network. The current collector is connected to the energy accumulator via at least one charge rectifier for the controlled charging of the energy accumulator. The vehicle includes a central cooling system and at least one closed cooling circuit with liquid coolant in order to cool the energy accumulator and the charge rectifier.