HIGH VOLTAGE-TYPE REDOX FLOW BATTERY COMPRISING SOC BALANCING DEVICE

The present invention relates to a high voltage-type redox flow battery comprising: a plurality of modules () which are serially connected; and a battery management system (BMS) for monitoring a state-of-charge (SOC) of each of the plurality of modules (), wherein each of the modules () includes an SOC balancing device comprising a stack (), a positive electrode electrolyte tank (), a positive electrode pump () for providing a positive electrode electrolyte of the positive electrode electrolyte tank () to the stack (), a positive electrode inlet pipe () connecting the positive electrode electrolyte pump () to the stack (), a positive electrode outlet pipe () connecting the stack () to the positive electrode electrolyte tank (), a positive electrode tank outlet pipe () connecting the positive electrode electrolyte tank () to the positive electrode electrolyte pump (), a negative electrode electrolyte tank (), a negative electrode pump () for providing a negative electrode electrolyte of the negative electrode electrolyte tank () to the stack (), a negative electrode inlet pipe () connecting the negative electrode electrolyte pump () to the stack (), a negative electrode outlet pipe () connecting the stack () to the negative electrode electrolyte tank (), and a negative electrode tank outlet pipe () connecting the negative electrode electrolyte tank () to the negative electrode electrolyte pump ().