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Energy Management System(EMS for short) is designed and implemented specifically for energy storage systems, which plays a vital role in the field of new energy storage systems. EMS can help enterprises or institutions achieve efficient, safe, and reliable management of energy storage equipment, optimize energy storage and release, reduce costs, and improve energy efficiency. To achieve these functions, EMS also needs to rely on various systems. This paper will analyze in detail the application of embedded system in EMS and its close relationship with it. 01 Embedded Linux System Purpose: It is often used in the monitoring system of energy storage power station as the background support of EMS to ensure the real-time processing and response of large-scale data of energy storage system. Features: It can be customized according to the specific needs of EMS, providing stable and reliable data processing and communication capabilities to ensure the efficient operation and monitoring of the energy storage system. Note: Tailoring and customization is required to accommodate specific EMS needs. 02 Microcontrollers Purpose: It is used in small energy storage devices or distributed energy storage systems to monitor and control the charging and discharging process of a single energy storage unit. Features: Through real-time data acquisition and upload, the micro controller can provide accurate charging and discharging data and status information for the EMS, and then realize the intelligent adjustment of the energy storage strategy. Note: The computing power and storage capacity are limited and not suitable for complex EMS tasks. 03 Programmable Logic Controller （PLC） Application: In large-scale energy storage power stations and industrial energy storage applications, PLC works closely with EMS to ensure safety control and optimization during energy storage. Features: The stability and real-time performance of PLC provide reliable data acquisition and control interface for EMS, so that the energy storage system can accurately respond to dispatching instructions and ensure the stable operation of the system. Note: The source code is usually not open, and the customization is poor. 04 Embedded SOC (System Chip) Purpose: In high-end EMS equipment, as the core processing unit, to ensure the rapid processing and analysis of energy data. Features: Its high performance and low power consumption meet the dual requirements of EMS for data processing speed and energy efficiency. Note: The design is complex and requires specialized development tools and teams. 05 Internet of Things (IoT) Device（IoT Devices） Purpose: As a remote monitoring and management means of EMS, the Internet of Things equipment realizes wireless monitoring and data acquisition of distributed energy storage equipment. Features: IOT equipment provides convenient data transmission and remote management channels for EMS, and helps to realize remote monitoring, fault diagnosis and other functions of energy storage system. Note: Data security and stability need to be considered. Summary In EMS, the selection of an appropriate embedded system involves a trade-off of multiple factors, including but not limited to system complexity, real-time requirements, cost, and development cycle. It is critical to select the right embedded system for the specific needs of the EMS, which will directly affect the performance, stability, and economic benefits of the energy storage system. To ensure the successful implementation and operation of an EMS, it is wise to seek the support and assistance of a specialized energy management and automation system provider. FCU2601 embedded Control Units is Folinx Embedded an EMS energy control unit product designed for the lithium battery energy storage industry, which is designed with high performance, multi-interface and low power consumption, and widely meets the local energy management application requirements of various energy storage systems. The FCU2601 embedded control unit takes into account the differentiated needs of different scenarios in the energy storage industry, and makes full preparations in hardware, protection, certification, software and other aspects to ensure the applicability, stability and reliability of the product. Originally published at www.forlinx.net.