| 摘要 |
PURPOSE:To control the state of charge by representing the residual capacity of a battery at the discrete value of a counting means and generating an alarm signal when the discrete value is brought to a value lower than a specified value. CONSTITUTION:A signal DCG representing a period during discharge and a signal CHG representing a period during charge are received by all input/output I/O41, and said each signal DCG, CHG is transmitted over a CPU 31. The residual capacity of a battery is shown artificially to the shape of the discrete value of a counting means such as an FF 45 from said respective signal DCG, CHG, and the residual capacity of the battery of a specified value or less is determined when the discrete value is lower than a fixed value. Accordingly, the residual capacity of the battery is controlled by the discrete value, thus improving facility, then also allowing the display of residual capacity.
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