Apparatus for estimating depth of discharge (DOD) of secondary battery
US9678165B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2013 |
| Grant date | Jun 13, 2017 |
| Priority date | — |
| Expiry date | Mar 13, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed is an apparatus and method for estimating a parameter of a secondary battery. The apparatus includes a sensor unit configured to repeatedly measure a voltage of a secondary battery including a blended cathode material containing at least first and second cathode materials at time intervals when the secondary battery is in an operation state or in an idle state, and a control unit configured to receive the repeatedly measured plurality of voltages from the sensor unit, identify an inflection point in a voltage change profile corresponding to the plurality of voltages, and estimate a depth of discharge (DOD) of the secondary battery by using a voltage measured after the inflection point is identified as a reference voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.