REDOX FLOW BATTERY AND METHOD FOR REACTIVATION THEREOF

1 . A method for reactivating a redox flow battery, wherein at least parts of the flow paths of the electrolytes of one of the half cells of the flow battery are temporarily rinsed with a reactivation liquid, wherein the electrolyte of the respective other half cell is used as a reactivation fluid for each half cell and is passed in parallel through both half cells.

2 . The method according to claim 1 , wherein the positive electrolyte is rinsed through at least parts of the flow paths of the negative half cell.

3 . The method according to claim 1 , wherein the temporarily rinsing takes place by means of a switching of the flow paths of the respectively used electrolyte to the other half cell, wherein the electrical connections of the half cells remains unchanged.

4 . The method according to claim 1 , wherein in a flow battery consisting of a plurality of flow cells, only a part of the flow cells is simultaneously reactivated, while the other flow cells remain in normal operation.

5 . A redox flow battery for carrying out the method according to claim 1 , having at least one flow cell consisting of two half cells separated by means of an ion-selective membrane, as well as one electrolyte circuit ( 2 , 3 ) per half cell, in which lines ( 12 - 14 ), that are optionally lockable via switching elements ( 8 - 11 , 15 - 17 ), connect an electrolyte tank ( 4 , 5 ) with the half cell via a pump ( 6 , 7 ), wherein one of the electrolyte circuits ( 2 , 3 ) has connecting lines ( 12 - 14 ) to at least a part of the flow paths in the other electrolyte circuit ( 2 , 3 ) which can be opened as needed via switching elements ( 8 - 11 , 15 - 17 ).

6 . The flow battery according to claim 5 , wherein the switching elements are formed by 3-way valves, which are switchable for temporary rinsing of the respective half cell(s).