Energy storage device adopting redundant ring network communication for BMS (Battery Management System)

The utility model discloses an energy storage device adopting redundant ring network communication for a BMS (Battery Management System), which is characterized in that the energy storage device is of a chained three-phase star topology structure, and a chain link redundant ring network communication structure is adopted between a BCMU (Business Control Unit) of each chain link in the energy storage device and a plurality of BMUs of the chain link; and a single-phase redundant ring network communication structure is adopted between the BAMS of the energy storage device and the plurality of BCMUs of each phase. According to the utility model, the leap-type auxiliary communication link is arranged in the ring network communication structure, so that the health state of the communication system can be monitored in real time, the fault node and the fault position can be automatically positioned when the ring network communication node fails and the main communication link fails, and the auxiliary communication li