Method and circuitry to adjust, correct and/or compensate an SOC of a battery based on relaxation time thereof
US9791513B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2015 |
| Grant date | Oct 17, 2017 |
| Priority date | — |
| Expiry date | Aug 2, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/70
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present inventions, in one aspect, are directed to techniques and/or circuitry to adjust, correct and/or compensate a state of charge of the battery using the data which is representative of the relaxation time (e.g., full relaxation time) of the battery. The techniques and/or circuitry may determine the data which is representative of a relaxation time based on or using: (i) the rate of decay of the voltage at the terminals of the battery after terminating application of the charge current to the battery, (ii) a voltage which is constant or substantially constant after termination of the charge current and/or (iii) an amount of time associated with the decay of the voltage at the terminals of the battery to at least a measured or predetermined voltage. Notably, the charge signal or current may include a plurality of pulses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.