Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1997-03-11
1998-06-30
Tso, Edward
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
320 39, 320 49, H01M 1046
Patent
active
057739552
ABSTRACT:
A battery charger which supplies charging current for a high voltage, high current battery in accordance with a charge profile which preferably includes both a charge pulse sequence as well as a discharge pulse sequence. Charging power is obtained from a three phase power line the voltage of which is reduced by an isolation transformer. Conversion of ac to dc is accomplished by a switching transistor power converter having a control for supplying transistor switching signals. The control is responsive to the angle of line voltage, the actual line current and a reference signal indicative of desired charge current, to generate the transistor switching signals. Any deviation between actual and desired current is then corrected by modification of the transistor switching signals.
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Northrop Grumman Corporation
Sutcliff Walter G.
Tso Edward
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