Patent ID: 11919579
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 4:
5. The power supply system according to claim 1, wherein:
the auxiliary power supply provides the assistance in the supply of the electric power by backing up the supply of the electric power to the system control unit instead of the main power supply on a condition that there is a decrease in the electric power supplied from the main power supply;
the power supply system further comprises a selection circuit provided between the main power supply and the auxiliary power supply, and the system control unit, the selection circuit being configured to select the electric power from one of the main power supply and the auxiliary power supply such that the electric power is supplied to the system control unit, the one of the main power supply and the auxiliary power supply having a higher supply voltage than a supply voltage of another of the main power supply and the auxiliary power supply; and
the auxiliary-power-supply control unit is configured to control the auxiliary power supply such that the electric power from at least the auxiliary power supply is supplied to the system control unit via the selection circuit while the main power supply supplies the electric power to the system control unit.