| 摘要 |
In an energy storage device of the type which comprises a plurality of series connected voltage cells such as a series of alkaline battery cells, the discharge of the cells is prevented from reaching a dangerously low level by monitoring the voltage level of selected ones of the cells which have a lower energy capacity than the remaining standard cells in the storage device. The selected cells, having a lower maximum capacity, will reach a detectable degree of discharge first and circuit means are provided for detecting when the full discharge of these cells is about to be reached. When detection occurs the selected cells are bypassed and signals are sent out to indicate that the overall energy storage device has reached a low level of charge.
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