Electrolyte storage unit for redox flow battery and vanadium redox flow battery comprising same

An electrolyte storage unit for redox flow batteries comprising a positive electrode electrolyte storage tank and a negative electrode electrolyte storage tank,

• wherein each of the positive electrode electrolyte storage tank and the negative electrode electrolyte storage tank comprises a water level sensing pipe protruding perpendicularly from one end thereof, wherein the water level sensing pipe has a water level sensor provided therein, and
• the electrolyte storage unit comprises:
• a “∩”-shaped electrolyte transfer pipe having a pump provided at a central end thereto to equally adjust a water level of an electrolyte in each of the tanks, wherein one and the other ends of the transfer pipe are disposed to be inserted in a state in which the one and the other ends of the transfer pipe are spaced apart a predetermined distance from the inside sidewall of the water level sensing pipe of each of the tanks, and
• an electrical control unit configured to measure a water level of the electrolyte in each of the tanks using a water level sensor, thereby automatically operating the pump.