BATTERY MANAGEMENT SYSTEM, BATTERY MANAGEMENT METHOD, BATTERY PACK AND ELECTRIC VEHICLE

摘要

A battery management system, a battery management method, a battery pack and an electric vehicle are provided. The battery management system includes a first connection unit, a first slave controller, and a master controller. The first connector electrically connects each battery cell included in the first battery group to the first slave controller. Power from the first battery group is supplied to the first slave controller through a first power line included in the first connector. The first slave controller determines a first reference voltage value during execution of the first communication mode and determines a first comparison voltage value during execution of the second communication mode. The master controller determines whether the first power line is disconnected based on the first reference voltage value and the first comparison voltage value.