The energy storage converter (PCS) is a key device between the energy storage device and the power grid, used to control the charging and discharging process of the battery, and to convert AC and DC. From the perspective of cost composition, the cost proportion of energy storage converters in energy storage systems is also second only to batteries, with a cost proportion of 8%. The important position in electrochemical energy storage systems. According to GGII data, the growth rate of the domestic PCS industry in 2022 reached 248%. From the perspective of enterprises, Sunshine Power, Kehua Data, and Suoying Electric are leading domestic enterprises. Battery management system (BMS), also known as battery nanny or battery butler, is mainly used to intelligently manage and maintain various battery units, prevent overcharging and discharging of batteries, extend battery life, and monitor battery status. Directly affecting the safety, lifespan, and other core aspects of BA, BA manufacturers generally have their own BMS systems. At present, the main listed companies in the domestic battery management system (BMS) industry include Ningde Times, BYD, Junsheng Electronics, Xinwangda, and others. The core of Energy Management System (EMS) EMS is software, which has a strong correspondence with PCS and BA systems, including communication protocols, responses, control methods, etc. Therefore, system integrators generally have their own EMS systems.