Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1984-03-05
1986-04-15
Hickey, R. J.
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
320 31, 320 37, 320 39, H02J 706
Patent
active
045830355
ABSTRACT:
Apparatus for monitoring and charging an electric storage battery comprises a battery charger for converting AC power from an AC source to DC power for charging the battery and further comprises a charge protector operable to continuously monitor battery terminal voltage and to connect and disconnect the battery charger from the AC source in accordance therewith to control charging of the battery. The charge protector comprises a relay which controls energization of the battery charger from the AC source, a control circuit for continuously monitoring battery terminal voltage and for operating the relay accordingly, and an indicator circuit operable to provide a visual display of battery terminal voltage and other conditions. The control circuit comprises an enabling circuit to allow initial connection of the battery charger to the AC source only if battery terminal voltage is within certain limits and of correct polarity. The control circuit also comprises a logic circuit to repeatedly effect disconnection and reconnection of the battery charger when battery terminal voltage reaches an upper trip level and a lower trip level, respectively. The control circuit further comprises an adjustable timer circuit to delay disconnection and maintain the battery charger connected for some selected interval of time after the upper trip level has been reached.
REFERENCES:
patent: 3887858 (1975-06-01), Burkett et al.
patent: 4327317 (1982-04-01), Heine et al.
patent: 4395672 (1983-07-01), Gassaway
Hickey R. J.
Nilles James E.
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