System and method for identifying vehicle battery decay
US10114079B2 · kind B2 · utility
4Cited by
2References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2016 |
| Grant date | Oct 30, 2018 |
| Priority date | — |
| Expiry date | Dec 23, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T90/16
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A vehicle includes a traction battery. A controller is configured to operate the traction battery according to a capacity estimate. The capacity estimate is based on a difference between a current-based estimation and a voltage-based estimation of a change in battery state of charge over a time interval. The difference is evaluated over a predetermined number of time intervals. When more than a predetermined percentage of the differences exceed a threshold, the capacity estimate is updated based on an average of the differences.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.