| 摘要 |
The present invention relates to a vanadium redox flow battery for a photovoltaic power generation system, which enables the vanadium redox flow battery to be applied to a conventional photovoltaic power generation system. According to the present invention, provided is the vanadium redox flow battery for a photovoltaic power generation system, which comprises: a battery cell in which a plurality of unit cells are arranged in a stack structure so that charging and discharging of electrolyte are enabled through oxidation and reduction reactions that are performed as electrolytes flow; first and second end plates which are configured at both side ends of the battery cell and protect the battery cell from the outside; positive and negative electrode plates which are configured to be electrically connected to positive electrode cells and negative electrode cells of all unit cells ranging from a 1^st unit cell to an n^th unit cell among the plurality of unit cells of the battery cell in a state of being located on the first and second end plates, collect charges of all the unit cells which perform discharge operation as the electrolytes flow, cause a conversion device to perform DC/AC conversion, and allow a resulting current to be supplied to a load; a co-divider which separates the battery cell into a section ranging from the 1^st unit cell to a d^th unit cell located at an arbitrary sequential position and a section ranging from a (d+1)^th unit cell to the n^th unit cell; a co-divider negative electrode plate which is configured to be electrically connected to negative electrode cells of some of the unit cells ranging from the 1^st unit cell to the d^th unit cell in a state of being located on the co-divider, and allows output voltage, collected in the 1^st to d^th unit cells by a photovoltaic module and input at a predetermined level by a main control device, to be supplied along with the positive electrode plate so that charging is performed as the electrolytes flow; positive and negative electrode electrolyte tanks in which the electrolytes having different oxidation states are stored, respectively; and first and second circulation pumps which are configured between the positive electrode electrolyte tank and the battery cell and between the negative electrode electrolyte tank and the battery cell, respectively, and circulate the electrolytes through the battery cell and the electrolyte tanks, respectively, so that the electrolytes have charge and discharge states. |
