Adaptive open circuit voltage based soc reset method at the end of charge based on temperature and charging rate
US11161428B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 2019 |
| Grant date | Nov 2, 2021 |
| Priority date | — |
| Expiry date | Feb 16, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T90/14
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An electrified vehicle includes a traction battery that is operated according to a state of charge of the traction battery. A controller is programmed to operate the traction battery according to the state of charge of the traction battery and, in response to completion of a charge cycle of the traction battery, generates an adaptive relaxation time and an adaptive compensation voltage of the state of charge that changes with a temperature and a charge rate of the traction battery. The controller is further programmed to, in response to expiration of the adaptive relaxation time after completion of the charge cycle, update the state of charge to a value corresponding to a voltage defined by a difference between a measured voltage of the traction battery and the adaptive compensation voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.