An electrical power circuit provides a pre-charge current to a traction bus of a vehicle (e.g. EV, HEV) and includes: a terminal for electrical connection to a traction battery 20; a DC-DC converter 22 coupled to the terminal; and a high voltage (HV) traction bus 27 for providing electrical power to one or more traction motors 28. The converter receives a first voltage (e.g. from a traction battery or an onboard charger (OBC)) and provides a second voltage to a high voltage auxiliary power bus. The converter is coupled to the traction bus via the auxiliary power bus. In response to an indication that power is to be applied to the traction bus, the converter provides the second voltage to the auxiliary power bus to provide a pre-charge current to the traction bus. The voltage on the traction bus is balanced before the traction bus is connected to the battery. A first switch 21 may connect the terminal and the traction bus in dependence on a parameter associated with the traction bus, e.g. when the voltage of the traction bus exceeds a threshold voltage. A battery control circuit may selectively interconnect first and second plurality of cells of the battery: in series, to provide a first battery voltage at a battery output; or in parallel, to provide a second battery voltage at the battery output. The second battery voltage may be provided by connecting the first plurality of cells to, and isolating the second plurality of cells from, the battery output.


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    Titel :

    Electrical vehicle circuitry


    Beteiligte:
    TUNG FAI YU (Autor:in) / STEPHEN NICHOLLS (Autor:in) / RICHARD DEVENPORT (Autor:in)

    Erscheinungsdatum :

    2024-05-22


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen



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