Patent ID: 11863111
Assignee: SUMITOMO WIRING SYSTEMS, LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 7:
8. A power supply control method for controlling power supply to a motor installed in a vehicle, comprising the steps of:
detecting a current flowing to the motor;
determining whether or not the motor is in a locked state based on the detected current; and
if it is determined that the motor is in the locked state, referencing a table in which a plurality of currents having different magnitudes are respectively associated with duty cycles, and controlling turning on and off the power supply to the motor at the duty cycle that corresponds to the detected current,
wherein the duty cycles in the table are set such that heat generated by the motor is suppressed while the power supply to the motor is turned on and off, and
the duty cycles in the table are set such that if, when each of the plurality of currents flows to the motor, the power supply is controlled with an on-period that is longer than an on-period indicated by the duty cycle associated with the corresponding current, a temperature of the motor increases.