REDUNDANT POWER DEVICE

The present disclosure relates to a redundant power device, and an object of the present disclosure is to provide a redundant power topology that can ensure normal operation of a battery management system (BMS) by securing normal operating power of the BMS even when a disconnection occurs in a cable connecting a battery cell and the BMS or an abnormality or failure occurs in an uppermost battery cell. The present disclosure provides a configuration of switching a power supply cable to a processor so that power is supplied to the processor through a sub-cable when an abnormality occurs in a main cable.