Power supply unit for vanadium cell

The utility model discloses a power supply unit for vanadium cell, include power selection circuit, auxiliary power circuit and multiple power input circuit, multiple power input circuit's output links to each other respectively with power selection circuit and auxiliary power circuit's input, and power selection circuit is arranged in selecting the alternative way to supply power for vanadium cell auxiliary power circuit 2 as auxiliary power circuit 1 according to presetting the rule from multiple power input circuit, power selection circuit links to each other with auxiliary power circuit. Power supply unit for vanadium cell can be according to stable and high the going the same way of priority among the input automatic selection multiple power input circuit, simultaneously, it can not produce the interrupt to switch the in -process in the power supply to maintain vanadium cell control module's normal work, ensure vanadium cell energy storage power system steady operation. The utility model discloses a powe