Battery management systems (BMS) have evolved with the widespread adoption of hybrid electric vehicles (HEVs) and electric vehicles (EVs). This paper takes an in-depth look into the trends affecting BMS development, as well as how the major subsystems work together to improve. . New Energy Development: The rapid development of electric vehicles (EVs) has led to increased demand for battery systems, including Energy Management Systems (EMS) and Battery Management Systems (BMS). With increasing demand for intelligent, secure battery systems, BMS technology has evolved not only as a technical innovation but also as a. . Acting as the critical bridge between the vehicle and its battery, the BMS is responsible for vigilant monitoring, precise control, and comprehensive protection, playing a paramount role in ensuring safe, reliable, and efficient vehicle operation.