Power Supply Control Device and Method for Controlling Same

A power supply control apparatus, located in a battery system which supplies power to a driving device, including: a switching device disposed on a power supply path between the battery and the driving device to electrically connect or disconnect the battery and the driving device; a main controller configured to control whether the battery should supply power to the driving device or not by controlling the switching device; and an auxiliary controller configured to control the switching device instead of the main controller in the instance that an abnormality occurs in the main controller.