What are the main components and costs of the lithium battery energy storage system?

　　Lithium battery energy storage system is mainly composed of battery pack, Battery Management System (BMS), Energy Management System (EMS), Power Conversion System (PCS) and other electrical equipment.

　　The battery pack is the most important part of the energy storage system, and the cost accounts for 60%;

　　The energy storage converter can control the charging and discharging process of the energy storage battery pack, and carry out AC-DC conversion, and the cost accounts for 20%.

　　The Energy Management System (EMS) is responsible for data collection, network monitoring and energy scheduling, and the cost accounts for 10%.

　　The Battery Management System (BMS) is mainly responsible for the monitoring, evaluation, protection and balancing of the battery, and the cost accounts for 5%;

　　Other electrical equipment accounted for 5%.

　　Among them, the cost of BMS is not high, but it is very important because it can report the status of the lithium battery to the system through communication protocols such as CAN, RS485, and 5G, which are the key to realize intelligent lithium battery of the energy storage system. We must seriously consider its performance when designing an energy storage system.

　　Lithium-ion battery (LIB) has become the main energy storage solution in modern social life. Among them, lithium iron phosphate batteries are a perfect substitute for lead-acid batteries and are the first choice in the energy storage industry.