| 摘要 |
PURPOSE:To stabilize the cell capacity and prevent a damage of the cell owing to an abnormal rise or drop of the inner pressure of a battery jar, by preparing a device to measure the inner pressure of the jar, and controlling the charging current density depending on the inner pressure. CONSTITUTION:In this cell are furnished a positive electrode of a chlorine electrode 5, a negative electrode of a zinc electrode 6, and an electrolyte of a water solution consisting of mainly zinc chloride. Between the electrodes 5 and 6, plural bipolar electrodes 7 combining a chlorine electrode 5a and a zinc electrode 6a are arranged parallel. At the upper part of a battery jar 1, a linking hole to link cell chambers 8a to 8d which are separated by the electrodes 7, and at one of the cell chambers are furnished a pressure detecting protector 11 and a sensor 12. By this sensor 12, the inner pressure of the jar 1 is measured, and when the pressure is low, the charging current density is increased, and when the pressure exceeds a specific value, the current density is decreased or the charging is halted to maintain the cell capacity constant. Therefore, a damage of the cell from an abnormal rise or drop of the inner pressure depending on an inadequate charging current density can be prevented. |
