Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1981-04-02
1983-07-26
Beha, Jr., William H.
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
320 21, 320 40, H02J 706
Patent
active
043956726
ABSTRACT:
The timer in a conventional timer-controlled battery charger is replaced with an electronic controller which is connected between the alternating current input and the direct current output of the charger and includes a set of electronic timer-controlled relay contacts that are connected in series with the conventional alternating current power contactor coil of the charger. When the charger is connected to a battery to be charged, the battery voltage activates the controller. If the battery voltage is within a predetermined voltage range relative to the charger, then the relay is activated, thereby energizing the alternating current power contactor coil and the charger. When the battery voltage reaches and stays above a preset level for a predetermined time interval, the controller turns off the charger. At a predetermined number of charging cycles said predetermined time interval is automatically lengthened to provide an equalize charge function. If the battery voltage never reaches the preset level, the controller turns off the charger after a predetermined elapsed time. If the battery voltage goes too high, due to a faulty charger, the controller turns off the charger immediately.
REFERENCES:
patent: 3500167 (1970-03-01), Applegate et al.
patent: 3895282 (1975-07-01), Foster et al.
Beha Jr. William H.
Olson Oliver D.
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