Patent ID: 7573151

Claim:
A switching control unit for controlling the transfer of electrical power in a hybrid electrical vehicle from at least one of a starter generator and a supercapacitor bank to at least one of a service battery and a plurality of electrical devices, the switching control unit comprising: a switching device adapted to selectively connect/disconnect the at least one of the starter generator and the supercapacitor bank to/from the at least one of the service battery and the plurality of electrical devices; and a switch controller adapted to: measure a voltage across the supercapacitor bank to generate a bank voltage signal; measure a voltage across the service battery to generate a service voltage signal; and control the switching device to connect/disconnect the at least one of the starter generator and the supercapacitor bank to/from the at least one of the service battery and the plurality of electrical devices in response to the bank voltage signal and the service voltage signal.