The energy storage system provides users with peak shaving and valley filling capabilities, as well as stable power quality management. Energy storage products have been successfully applied in large commercial and residential sectors and have expanded to emerging applications such as communication base station backup power, UPS backup power, island microgrids, and intelligent charging stations for solar and storage integration. This expansion allows for wider electricity coverage, reduced societal electricity costs, improved user-side power security, and maximized utilization of energy to achieve social and economic benefits.