| 摘要 |
PURPOSE:To recover the performance and increase the life of a metal-halogen secondary battery, by providing each electrolyte-circulating system of the positive and negative electrode of the battery with reaction-jar washing systems, which are alternatively used in washing each reaction jar. CONSTITUTION:During the usual operation as a battery, switch valves V1, V2, V5, and V6 only are opened, and the other valves are closed. Besides, each electrolyte for a positive electrode and a negative electrode circulates into reaction jars 2 and 3 through the operation of pumps PO-1 and PO-2. During washing which is conducted either periodically or when the electromotive force is reduced, the electrolyte of each electrode is stored within electrolyte tanks TA-1 and TA-2. Following that, each fresh electrolyte is supplied from electrolyte-supplying sources 9 and 10 into the electrolyte tanks TA-1 and TA-2, and the pumps PO-1 and PO-2 are operated to wash inside the reaction jars 2 and 3 through the circulation of each washing liquid. Next, the washing liquid is exhausted, and a final washing is conducted by means of demineralized exchange water stored within a tank TA-5. |
