The Vanadium Redox Flow Battery (VRFB from s stands for progressive and innovative flow battery technology. Different oxidation states of dissolved vanadium ions in the electrolyte (V2+, V3+, V4+, V5+) store or deliver electric energy. The electrolyte is continuously fed from a tank system into the reaction cell. Depending on the current demand, energy is stored in the electrolyte (battery charging) or fed into the grid/network (battery discharging). Because the electrolyte flow direction does not have to change when loading and unloading, the VRFB is very fast in the response time (less than 20ms). It can be switched between charging and discharging under full load. When the system is in standby mode, only a maximum discharge of the stack takes place. In the electrolytic tank there is no discharge taking place until the electrolyte will be pumped again through the stack by turning on the pumps.
The SCHMID EverFlow® energy storage technology is designed in such a way, that the flow rate of the pumps is adjusted according to the necessary energy amount needed at the current moment in order to achieve the best efficiency possible.