REGELSCHALTUNG FÜR BATTERIEBETRIEBENE FAHRZEUGE

A control circuit for battery-operated vehicles with a locomotion battery (2) which can be charged up by means of a vehicle-mounted charging device (6) with a rectifier circuit has a controller (1) which is provided with a microprocessor and which has inputs for detecting operating parameters of the locomotion battery (2), control inputs for inputting operating instructions and control outputs for controlling switching and control devices (12, 13) for the vehicle-mounted charging device (6) according to control programs which are influenced by the signals present at the inputs and for controlling display devices (5), the locomotion battery (2) being assigned a direct voltage transformer (9) for supplying a low voltage vehicle electrical system. A separate vehicle electrical-system battery (3) being provided for the vehicle's electrical system, the direct voltage transformer (9) is connected to this vehicle electrical-system battery and is integrated into the control circuit of the vehicle-mounted charging device. For the input of the direct voltage transformer (9) a change-over device (8) is provided by means of which a supply connection may be made as desired to the rectifier circuit, which can be connected to a supply system (7), and to the locomotion battery (2).