Cost-effective electric auxiliary drive functionality for fuel cell hybrid vehicles

摘要

An on-board network for a fuel cell hybrid vehicle, the vehicle comprising a fuel cell stack and a high-voltage battery. A conventional bidirectional DC / DC power converter is provided in a high-voltage bus, which couples the voltage of the fuel cell stack and the battery voltage. Furthermore, a conventional inverter module is provided, which converts the high-voltage DC signal on the high-voltage bus to an AC signal, which is suitable for an electric traction motor in the vehicle. The present invention suggests using the existing bi-directional DC / DC power converter and inverter module as part of an electrical power take-off (EPTO) circuit that provides AC power to external vehicle loads while the fuel cell stack and battery are not used to power the vehicle to supply with electricity.