Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – Having variable number of cells or batteries in series
Patent
1998-03-06
1999-10-19
Wong, Peter S.
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
Having variable number of cells or batteries in series
H02J 700
Patent
active
059695048
ABSTRACT:
An automatic battery power switch circuit which switches from n to n+m cells, where n and m are integers, in a battery. The circuit delivers a relatively constant voltage over a wide range of load current conditions. One embodiment switches based on load current. Another embodiment switches based on the output voltage of the circuit. The circuit provides a high speed automatic switch used in devices that require at least two power states, that can function as a voltage regulator, and that can significantly prolong functional battery life.
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Krivak Carla Magda
Luk Lawrence
The Johns Hopkins University
Wong Peter S.
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