Method and system for determining state-of-health of a nickel-metal hydride battery using an intelligent system
First Claim
1. A method of determining the state-of-health of a nickel-metal hydride battery connected to a load, the method comprising:
- detecting an impedance characteristic of the battery at at least one selected frequency; and
determining the state-of-health of the battery from a fuzzy system trained in a relationship between said impedance characteristic at said at least one frequency and said state-of-health, wherein said state-of-health is a function of and varies with the battery'"'"'s ability to deliver power required by the load and the battery'"'"'s capacity to meet load requirements.
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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.
55 Citations
20 Claims
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1. A method of determining the state-of-health of a nickel-metal hydride battery connected to a load, the method comprising:
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detecting an impedance characteristic of the battery at at least one selected frequency; and determining the state-of-health of the battery from a fuzzy system trained in a relationship between said impedance characteristic at said at least one frequency and said state-of-health, wherein said state-of-health is a function of and varies with the battery'"'"'s ability to deliver power required by the load and the battery'"'"'s capacity to meet load requirements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for detecting a state of health of a nickel metal hydride battery, the system comprising:
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a microcontroller adapted to receive inputs from an impedance measurement device and a voltage measurement device, the microcontroller including software causing the microcontroller to perform operations including; storing an input value corresponding to an impedance characteristic at at least one selected frequency; inputting each said input value into a fuzzy system trained in a relationship between each said value and said state-of-health, said state-of-health being a function of the battery'"'"'s ability to deliver power required by the load and the battery'"'"'s capacity to meet load requirements; and storing an output value from the fuzzy system, said output value corresponds to said state-of-health of the battery. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification
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- Resources
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Current AssigneePritpal Singh, Villanova University
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Original AssigneeU.S. Nanocorp
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InventorsSingh, Pritpal, Reisner, David E., Fennie, Craig Jr.
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Primary Examiner(s)DAVIS, GEORGE B
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Application NumberUS10/127,292Publication NumberTime in Patent Office1,492 DaysField of Search706/2US Class Current706/2CPC Class CodesG01R 31/367 Software therefor, e.g. for...G01R 31/379 for lead-acid batteriesG01R 31/389 Measuring internal impedanc...G01R 31/392 Determining battery ageing ...Y10S 706/90 Fuzzy logicY10S 706/902 Application using ai with d...
