| 摘要 |
PURPOSE:To reduce loss due to liquid communication leak current by blocking or throttling liquid paths while liquid supply is stopped in case liquid supply by a pump is conducted in interrupted continuity. CONSTITUTION:A positive electrode liquid 22 is sent by the discharge pressure of a positive electrode liquid pump 17 in the condition where pump is in operation, and a check valve 26 is open, and there is liquid communication leak current between cells through common liquid paths 24, 15. In the condition the positive electrode liquid pump 17 is at a standstill, however, the check valve 26 is shut, and liquid paths between cells are mostly shut electrically, which minimizes the value of liquid communication leak current. Thus a check valve is furnished for each cell in a point after divergence to the cell, and the electrical liquid path is blocked or throttled while the liquid feed is off in case the liquid feed is conducted in interrupted continuity. This reduces the loss due to liquid communication leak current. |
