Method and system for determining state-of-health of a nickel-metal hydride battery using an intelligent system
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United States of America Patent
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May 23, 2006
Grant Date -
Apr 17, 2003
app pub date -
Apr 22, 2002
filing date -
Mar 12, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and system for determining the state-of-health of a nickel-metal hydride battery connected to a load comprises: detecting at least one of a real and imaginary part of an impedance of the battery at each of a first set of selected frequencies, the first set of selected frequencies including at least one frequency, and determining the state-of-health of the battery from a fuzzy system trained in a relationship between each impedance and the state-of-health, wherein the state-of-health is a function of the battery's ability to deliver power required by the load and the battery's capacity to meet load requirements.
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