Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1995-11-20
1998-01-13
Tso, Edward
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
320 30, 320 35, 320 39, H01M 1044, H01M 1046
Patent
active
057083487
ABSTRACT:
A battery monitoring method and apparatus for delivering current to a battery, particularly a lead-acid battery, in standby condition after it has been charged and in such a manner as to maintain the rated ideal charge on the battery at the ambient temperature while minimizing damage to the battery cells. In particular, the apparatus and method apply pulses of current of variable width when the battery voltage hovers about its ideal voltage, apply continuous current when the battery voltage is below its ideal voltage by a certain amount thereby to raise the voltage toward its ideal voltage, and turn off the current when the battery voltage exceeds an upper limit indicative of overcharging or when the battery voltage is at a lower limit indicative of a defective battery or reversed connections.
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Frey Mitchell B.
Hobart Kirk L.
Renick Christopher A.
Costello Leo F.
Johnson Warren
Tso Edward
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