Electricity: battery or capacitor charging or discharging – Battery or cell charging – Time control
Patent
1998-09-18
2000-07-18
Wong, Peter S.
Electricity: battery or capacitor charging or discharging
Battery or cell charging
Time control
320132, 320162, 429 61, 429 91, 429 52, H02J 706, H02J 724, H02J 700, H02M 1044, H02M 1048
Patent
active
060912308
ABSTRACT:
A method of recovering and restoring the voltage in a zinc-air battery that has dropped below a first threshold. The method includes the steps of decoupling essentially all loads from the zinc-air battery and permitting the voltage to stabilize, sampling the voltage to determine if the voltage of the zinc-air battery is below a second predefined threshold, starting a timer and determining if the voltage has recovered to at least a third predefined threshold prior to the timing out of the timer, and periodically sampling the voltage to determine if the voltage has recovered to a voltage above a fourth predefined threshold for a sustained period of time, the periodic sampling being done if the zinc-air battery fell below the first predefined threshold but did not fall below the second predefined threshold, and upon determination that the voltage of the zinc-air battery has recovered to above the fourth predefined threshold, coupling the loads, previously decoupled from the battery, back to the battery.
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Timex Corporation
Toatley , Jr. Gregory J.
Wong Peter S.
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