Method of estimating pulse response using an impedance spectrum
Abstract
Electrochemical Impedance Spectrum data are used to predict pulse performance of an energy storage device. The impedance spectrum may be obtained insitu. A simulation waveform includes a pulse wave with a period greater than or equal to the lowest frequency used in the impedance measurement. Fourier series coefficients of the pulse train can be obtained. The number of harmonic constituents in the Fourier series are selected so as to appropriately resolve the response, but the maximum frequency should be less than or equal to the highest frequency used in the impedance measurement. Using a current pulse as an example, the Fourier coefficients of the pulse are multiplied by the impedance spectrum at corresponding frequencies to obtain Fourier coefficients of the voltage response to the desired pulse. The Fourier coefficients of the response are then summed and reassembled to obtain the overall time domain estimate of the voltage using the Fourier series analysis.
 Inventors:
 Issue Date:
 Research Org.:
 Idaho National Lab. (INL), Idaho Falls, ID (United States)
 Sponsoring Org.:
 USDOE
 OSTI Identifier:
 1160237
 Patent Number(s):
 8868363
 Application Number:
 12/813,750
 Assignee:
 Battelle Energy Alliance, LLC (Idaho Falls, ID)
 Patent Classifications (CPCs):

Y  NEW / CROSS SECTIONAL TECHNOLOGIES Y02  TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E  REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
H  ELECTRICITY H01  BASIC ELECTRIC ELEMENTS H01M  PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
 DOE Contract Number:
 AC0705ID14517
 Resource Type:
 Patent
 Resource Relation:
 Patent File Date: 2010 Jun 11
 Country of Publication:
 United States
 Language:
 English
 Subject:
 25 ENERGY STORAGE
Citation Formats
Morrison, John L, Morrison, William H, Christophersen, Jon P, and Motloch, Chester G. Method of estimating pulse response using an impedance spectrum. United States: N. p., 2014.
Web.
Morrison, John L, Morrison, William H, Christophersen, Jon P, & Motloch, Chester G. Method of estimating pulse response using an impedance spectrum. United States.
Morrison, John L, Morrison, William H, Christophersen, Jon P, and Motloch, Chester G. Tue .
"Method of estimating pulse response using an impedance spectrum". United States. https://www.osti.gov/servlets/purl/1160237.
@article{osti_1160237,
title = {Method of estimating pulse response using an impedance spectrum},
author = {Morrison, John L and Morrison, William H and Christophersen, Jon P and Motloch, Chester G},
abstractNote = {Electrochemical Impedance Spectrum data are used to predict pulse performance of an energy storage device. The impedance spectrum may be obtained insitu. A simulation waveform includes a pulse wave with a period greater than or equal to the lowest frequency used in the impedance measurement. Fourier series coefficients of the pulse train can be obtained. The number of harmonic constituents in the Fourier series are selected so as to appropriately resolve the response, but the maximum frequency should be less than or equal to the highest frequency used in the impedance measurement. Using a current pulse as an example, the Fourier coefficients of the pulse are multiplied by the impedance spectrum at corresponding frequencies to obtain Fourier coefficients of the voltage response to the desired pulse. The Fourier coefficients of the response are then summed and reassembled to obtain the overall time domain estimate of the voltage using the Fourier series analysis.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {10}
}
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