| 摘要 |
1518185 Charging batteries PRO CASA-GES REG TRUST 20 June 1975 [26 June 1974 28 Jan 1975] 26346/75 Heading H2H A method of charging a battery 14 comprises monitoring the battery voltage after the voltage at which gassing commences has been reached, sensing a reduction in the rate of increase of the battery voltage and causing a charger 15 to be switched off or switched from a boost charge mode to a trickle charge mode when the rate of increase is substantially zero. The charger is connected to a power supply 16 via the contacts of a relay 17. A differential amplifier 20 compares the battery voltage with the voltage of a capacitor charged from a constant current source in a control device 21, the charging of the capacitor being started when the battery voltage reaches the gassing point. An amplifier 24 holds the contacts of the relay 17 closed to supply a boost charge to the battery until the capacitor voltage equals the battery voltage whereupon the relay 17 is de-energized.
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