BATTERY MANAGEMENT SYSTEM, OPERATING METHOD THEREOF, AND ENERGY STORAGE SYSTEM

Disclosed herein are a battery management system, BMS, an operating method thereof, and an energy storage system, ESS, and a technical problem to be solved is to provide a hard fault handling mechanism that can improve operational stability of the ESS. To this end, the present disclosure employs a configuration in which, when a hard fault occurs, error occurrence information is stored in a reference area of a memory, and then information in the reference area of the memory is read when the BMS wakes up, and an operation of the ESS is started or a protection operation is performed according to a read result.