Charging unit for accumulator - has store for comparing instantaneous charging voltage with previous value

摘要

The charging system consists of a converter unit (4), a charging section (2) a stop/start store (1) with indicator lamps (13,14) and control button (15). In addition, there is a timer (5), a timing circuit (6) and a cut-out unit. The converter (4) contains a comparator (8), a gate (9), an oscillator (10), a counter (11) and a digital/analogue converter (12). At the start, the directly available charging voltage of a battery is sensed and stored. After a certain time has elapsed, suitable for the battery type, the stored voltage value is compared with the available charging voltage, at that instant, at the battery. If the charging voltage of the battery has risen, the new value is taken into the store (1) and retained until the next comparison. The control section completes the charging process as soon as the charge voltage remains constant.