| 摘要 |
An apparatus for recharging dry batteries or accumulator batteries by means of pulses of alternating current or any other type of intermittent pulses and for a slight discharging of the batteries or accumulators during the periods appearing between the recharging pulses and comprising a mains connection circuit (A) and a recharging circuit (B) connected thereto having terminals for one or more batteries to be charged and a rectifying means (8) supplying a direct current to a controllable guide means (19). The apparatus comprises a control unit (C) which is connected to the guide means (9) and which defines the moment (75) of the alternating current pulse or the other intermittent pulse when the recharging circuit (B) is activated and a recharging voltage is supplied to the battery (13). The guiding means (9) may be a tyristor which is made conducting by the control circuit (C) at a predetermined moment (75). The control circuit (C) comprises means for optional continuous or stepwise controlling of the trigging moment (75) for the recharging pulse during the extent of the recharging and thereby for controlling the length of the recharging periods and the intermediate discharging periods. The apparatus comprises means for changing the level and the duration of the recharging voltage during the recharging operation especially after a given recharging period by increasing the recharging voltage and concurrently therewith move the trigging point (75) for the recharging pulse so that the duration of the recharging period is reduced and the duration of the discharging period is increased. |
