The invention relates to a circuit arrangement (24) for a vehicle electrical system of an electrically driven motor vehicle (42), comprising: a high-voltage battery (26) for supplying power to an electrical drive machine (28) of the motor vehicle (42); a range extender (22), which is designed to charge the high-voltage battery (26) and which has a plurality of identical fuel-cell base modules (10) having interfaces for supplying reactants in the form of hydrogen and air; a switching device (32) for connecting the range extender (22), the circuit arrangement (42) having no DC-to-DC converter; a control device (36) which is designed to carry out the following steps after the control device has received an activation signal regarding the range extender (22): determining an operating point of the range extender (22) in dependence on at least one variable of the high-voltage battery (26); defining a setpoint value regarding the supply of the reactants to the fuel-cell base modules (10) and/or a setpoint value regarding an operating temperature of the fuel cells on the basis of the determined operating point; controlling a system (40), which is designed to provide the reactants to and/or to control the temperature of the fuel cells, in accordance with each defined setpoint value; controlling the switching device (34) so as to connect the range extender (22), only after the setpoint value regarding the supply of the reactants and/or the setpoint value regarding the operating temperature has been reached. The invention further relates to an electrically driven motor vehicle (42) having the circuit arrangement (24), and to a method for operating the circuit arrangement (24).


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    Title :

    SCHALTUNGSANORDNUNG FÜR EIN BORDNETZ EINES ELEKTRISCH ANGETRIEBENEN KRAFTFAHRZEUGS UND VERFAHREN ZUM BETREIBEN EINER SOLCHEN SCHALTUNGSANORDNUNG


    Additional title:

    CIRCUIT ARRANGEMENT FOR A VEHICLE ELECTRICAL SYSTEM OF AN ELECTRICALLY DRIVEN MOTOR VEHICLE AND METHOD FOR OPERATING A CIRCUIT ARRANGEMENT OF THIS TYPE
    ENSEMBLE DE CIRCUITS POUR UN RÉSEAU DE BORD D'UN VÉHICULE À MOTEUR À PROPULSION ÉLECTRIQUE ET PROCÉDÉ POUR FAIRE FONCTIONNER UN TEL ENSEMBLE DE CIRCUITS


    Contributors:

    Publication date :

    2022-08-17


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    German


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen