Method and System for setting up sequent ID of multi-slave in battery pack

Sequential ID setting method for the multi-slave of the battery pack of the present invention includes the start step of the main BMS transmits a trigger (trigger) signal that is the start signal for the ID setting to the first slave slave BMS of the N slave BMS; The first slave slave BMS receiving the trigger signal transmits its ID information to the main BMS and then transfers the trigger signal to the slave BMS located in its next order; After receiving the trigger signal, the slave BMS transmits its ID information to the main BMS, and then transfers the trigger signal to the slave BMS located in its next order from the second slave BMS to the N-1 th slave BMS. Subsequent step to perform sequentially up to; And an ending step of transmitting, by the N-th slave BMS receiving the trigger signal, its ID information to the main BMS. According to the present invention, IDs for the multi-slave BMSs can be automatically assigned to correspond to the sequential physical location structure, thereby providing ease of device implementation and higher efficiency of subsequent processing.