The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 24, 2014
Filed:
May. 03, 2011
Jon P. Christophersen, Idaho Falls, ID (US);
John L. Morrison, Butte, MT (US);
William H. Morrison, Manchester, CT (US);
Chester G. Motloch, Idaho Falls, ID (US);
David M. Rose, Mountlake Terrace, WA (US);
Jon P. Christophersen, Idaho Falls, ID (US);
John L. Morrison, Butte, MT (US);
William H. Morrison, Manchester, CT (US);
Chester G. Motloch, Idaho Falls, ID (US);
David M. Rose, Mountlake Terrace, WA (US);
Battelle Energy Alliance, LLC, Idaho Falls, ID (US);
Abstract
Estimating impedance of energy storage devices includes generating input signals at various frequencies with a frequency step factor therebetween. An excitation time record (ETR) is generated to include a summation of the input signals and a deviation matrix of coefficients is generated relative to the excitation time record to determine crosstalk between the input signals. An energy storage device is stimulated with the ETR and simultaneously a response time record (RTR) is captured that is indicative of a response of the energy storage device to the ETR. The deviation matrix is applied to the RTR to determine an in-phase component and a quadrature component of an impedance of the energy storage device at each of the different frequencies with the crosstalk between the input signals substantially removed. This approach enables rapid impedance spectra measurements that can be completed within one period of the lowest frequency or less.