Patents
US 8868363 B2: Method of estimating pulse response using an impedance spectrum
- Granted
- 2014-10-21
- Filed
- 2010-06-11 application 12813750
- Type
- Utility · 20 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Electrochemical Impedance Spectrum data are used to predict pulse performance of an energy storage device. The impedance spectrum may be obtained in-situ. 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.
Source: PVGPATDIS, file of 2026-04-10 (ipg141021.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Battelle Energy Alliance, LLC 395 patents | US company or organization | Idaho Falls, ID | PVGPATDIS, file of 2026-04-10 | |
| Qualtech Systems, Inc. 3 patents | US company or organization | Town of East Hartford, CT | PVGPATDIS, file of 2026-04-10 | |
| Montana Tech of the University of Montana 7 patents | US company or organization | Butte, MT | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| John L. Morrison | Butte, MT | 18 | PVGPATDIS, file of 2026-04-10 | |
| William H. Morrison | Manchester, CT | 17 | PVGPATDIS, file of 2026-04-10 | |
| Jon P. Christophersen | Idaho Falls, ID | 19 | PVGPATDIS, file of 2026-04-10 | |
| Chester G. Motloch | Idaho Falls, ID | 4 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| G01R | Measuring electric variables; measuring magnetic variables | G01R31/389 | PVGPATDIS, file of 2026-04-10 |
| H01M | Processes or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy | H01M10/0525 | PVGPATDIS, file of 2026-04-10 |
| Y02E | Reduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution | Y02E60/10 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2016-06-09 | Assignment Assignment of assignor's interest | MOTLOCH, CHESTER G signed 2015-10-02 | BATTELLE ENERGY ALLIANCE, LLC IDAHO FALLS, ID | 38863/670 | ECORSEXC, file of 2026-09-25 |
| 2016-06-07 | Assignment Assignment of assignor's interest | MONTANA TECH OF THE UNIVERSITY OF MONTANA signed 2016-06-06 | BATTELLE ENERGY ALLIANCE, LLC IDAHO FALLS, ID | 38828/540 | ECORSEXC, file of 2026-09-25 |
| 2016-05-10 | Assignment Assignment of assignor's interest | QUALTECH SYSTEMS, INC. signed 2016-04-26 | BATTELLE ENERGY ALLIANCE, LLC IDAHO FALLS, ID | 38529/223 | ECORSEXC, file of 2026-09-25 |
| 2011-09-21 | Government interest Confirmatory license | BATTELLE ENERGY ALLIANCE, LLC signed 2011-08-04 | UNITED STATES DEPARTMENT OF ENERGY WASHINGTON, DC | 26980/80 | ECORSEXC, file of 2026-09-25 |
| 2011-01-19 | Assignment Assignment of assignor's interest | MORRISON, WILLIAM signed 2010-12-14 | QUALTECH SYSTEMS, INC. EAST HARTFORD, CT | 25663/719 | ECORSEXC, file of 2026-09-25 |
| 2010-12-20 | Assignment Assignment of assignor's interest | MORRISON, JOHN L signed 2010-12-16 | MONTANA TECH OF THE UNIVERSITY OF MONTANA BUTTE, MT | 25529/875 | ECORSEXC, file of 2026-09-25 |
| 2010-12-13 | Assignment Assignment of assignor's interest | CHRISTOPHERSEN, JON P. signed 2010-12-10 | BATTELLE ENERGY ALLIANCE, LLC IDAHO FALLS, ID | 25496/650 | ECORSEXC, file of 2026-09-25 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.