Topology and control strategy for hybrid storage systems

摘要

The application discloses a hybrid battery charging device that comprises input terminals for connecting a photovoltaic panel or other current sources, first battery connections for connecting a lead-acid battery and second battery for connecting a high-cycle chemical battery. Furthermore, the battery charging device comprises a two-way DC/DC converter with a first set of terminals that is connected with the second battery connections, and with a second set of terminals that is connected with the first battery connections. An input of the second set of terminals is derived from the input terminals. Furthermore, the battery charging device comprises a charge and discharge control system which is connected to the DC/DC converter via respective control lines and output terminals for connecting a load, wherein an input to the output terminals is derived from the first battery connections.