Method of monitoring a state of charge of a battery
US11549991B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 16, 2020 |
| Grant date | Jan 10, 2023 |
| Priority date | — |
| Expiry date | Aug 5, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J7/345
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of monitoring a state of charge of a battery of a field device wherein the field device includes the battery, a voltage converter and a battery-powered component connected to the voltage converter, is disclosed. The method includes enabling the voltage converter and subsequently operating the voltage converter in duty cycles based on a current flowing from the battery to the voltage converter by repeatedly: disabling the voltage converter when the current exceeds an upper limit and enabling the voltage converter again when the current drops below a lower limit; and at least once determining and providing a state of charge of the battery determined based on a duration of at least one first time interval during which the voltage converter was enabled during one of the duty cycles and a previously determined dependency of the durations on the state of charge of the battery.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.