Energy-storage converter device having multi-group batteries and super capacitors connection function

The utility model relates to an energy-storage converter device having a multi-group batteries and super capacitors connection function. According to the energy-storage converter device, a plurality of groups of energy storage media like the storage batteries and super capacitors are connected to the circuit; and the independence is ensured and the electric energy advantage complementation is also realized. Therefore, a technical problem that the energy and power requirements can not be met simultaneously by the existing energy storage apparatus can be solved. The main loop of the system employs a two-stage structure of AC/DC with DC/DC, so that the operation reliability is high; and with the novel bidirectional DC/DC topological structure and control mode, the electric energy quality is substantially improved and the internal loss is reduced.