BATTERY MANAGEMENT SYSTEM AND COMMUNICATION METHOD THEREOF

A battery management system according to an embodiment of the present invention includes a master battery management system configured to transmit a wake-up signal to a plurality of slave battery management systems (BMS), and a plurality of slave battery management systems configured to transmit state information of a battery module to the master battery management system upon receiving the wake-up signal from the master battery management system, wherein at least one slave battery management system among the plurality of slave battery management systems transmits a request signal to the master battery management system, and synchronizes a reception period in which the plurality of slave battery management systems receive the wake-up signal from the master battery management system based on the request signal.