The slave module of the Battery Management System (BMS) serves as the core execution unit and incorporates advanced active balancing functionality. During the charging and discharging processes of the battery pack, it utilizes high-precision sensors to monitor the operating status of all cells within the pack in real-time and synchronously, accurately collecting voltage and temperature data for each individual cell. These critical parameters are preliminarily analyzed by internal algorithms and then reported in real-time to the master control module via a high-speed and reliable CAN bus communication network. Consequently, the master and slave modules work in coordination to form a complete intelligent battery management system, providing a solid foundation for the safe, efficient, and long-lasting operation of the battery pack.