| 摘要 |
<p>Method for the charging of alkaline manganese dioxide-zinc rechargeable batteries, in which predetermined charging and discharging currents are periodically passed to the battery during alternating sequences of charging and discharging sections, in which the charging sections are substantially longer than the discharging sections, in which in the charging sections a predetermined bias current and steep charging pulses with predetermined width and intensity superimposed thereon are passed to the battery, in which the pulses follow each other with a predetermined time delay therebetween, in each of the discharging sections the battery is loaded with a predetermined bias loading current and steep discharging pulses with predetermined width and intensity superimposed on the bias loading current, in each of the discharging sections the discharging process is stopped after a period of at least about 3, preferably 5 seconds for a predetermined stop period, the voltage of the battery is sensed during the stop periods, the charging and discharging processes are both stopped if the sensed voltage reaches a predetermined maximum value, and the energy of the pulsated charging current is changed as a function of the sensed battery voltage so that the energy decreases with increasing voltage. A charger circuit for carrying out the method comprises a charger and a discharger generator (CHG, DCHG) coupled to the battery, four timers (T1...T4), a window comparator with bistable output properties (CP) which is connected to stop inputs of the generators and enabled by the first timer, the comparator senses the resistance free battery voltage in a time period in the respective discharging sections defined by the fourth timer (T4), the timers are arranged to provide the pulsated charging and discharging current waveforms defined in the method.</p> |
