ENERGY STORAGE SYSTEM BALANCE MANAGEMENT METHOD BASED ON CLOUD-EDGE COLLABORATION AND SYSTEM THEREOF

Energy storage system balance management method based on cloud-edge collaboration and system are provided. The balance management method includes: acquiring operating data before and after balance of energy storage system; evaluating, according to operating data before and after balancing energy storage system and balance time, balance effect of energy storage system to obtain balance optimization parameter; and controlling ON and OFF of balancing of energy storage system at edge end according to balance optimization parameter. According to balance optimization parameter, differences in cell consistency between battery clusters at edge end can be reduced, and circulating current between battery clusters at edge end can be reduced, thereby preventing damage to batteries due to excessive circulating current between battery clusters and ensuring use performance and safety of energy storage system. Reliable reference can be provided for stack controller at edge end to analyze inter-cell difference, and balance control accuracy can be improved.