Patents
US 9244130 B2: Method, system and computer-readable media for measuring impedance of an energy storage device
- Granted
- 2016-01-26
- Filed
- 2012-04-03 application 13438741
- Type
- Utility · 25 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Real-time battery impedance spectrum is acquired using a one-time record. Fast Summation Transformation (FST) is a parallel method of acquiring a real-time battery impedance spectrum using a one-time record that enables battery diagnostics. An excitation current to a battery is a sum of equal amplitude sine waves of frequencies that are octave harmonics spread over a range of interest. A sample frequency is also octave and harmonically related to all frequencies in the sum. A time profile of this sampled signal has a duration that is a few periods of the lowest frequency. A voltage response of the battery, average deleted, is an impedance of the battery in a time domain. Since the excitation frequencies are known and octave and harmonically related, a simple algorithm, FST, processes the time profile by rectifying relative to sine and cosine of each frequency. Another algorithm yields real and imaginary components for each frequency.
Source: PVGPATDIS, file of 2026-04-10 (ipg160126.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 | Butte, MT | 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 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2016-07-25 | Assignment Nunc pro tunc assignment | MORRISON, WILLIAM signed 2016-07-19 | QUALTECH SYSTEMS, INC. ROCKY HILL, CT | 39247/409 | ECORSEXC, file of 2026-09-25 |
| 2016-07-12 | Assignment Nunc pro tunc assignment | CHRISTOPHERSEN, JON P. signed 2016-07-08 | BATTELLE ENERGY ALLIANCE, LLC IDAHO FALLS, ID | 39136/313 | ECORSEXC, file of 2026-09-25 |
| 2016-07-12 | Assignment Assignment of assignor's interest | MORRISON, JOHN signed 2016-06-29 | MONTANA TECH OF THE UNIVERSITY OF MONTANA BUTTE, MT | 39132/5 | ECORSEXC, file of 2026-09-25 |
| 2016-06-09 | Assignment Assignment of assignor's interest | MOTLOCH, CHESTER G signed 2015-10-02 | BATTELLE ENERGY ALLIANCE, LLC IDAHO FALLS, ID | 38863/580 | 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 | 38828/508 | 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 | 38529/347 | ECORSEXC, file of 2026-09-25 |
| 2013-04-16 | Government interest Confirmatory license | BATTELLE ENERGY ALLIANCE, LLC signed 2012-05-08 | ENERGY, UNITED STATES DEPARTMENT OF WASHINGTON, DC | 30220/169 | 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.