Method for initializing the charge state of a battery
US12291124B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 24, 2020 |
| Grant date | May 6, 2025 |
| Priority date | — |
| Expiry date | Apr 12, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/3835
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for estimating the charge state of a battery includes initializing the charge state, including estimating an initial charge state value. The initializing includes: receiving a stored charge state value for a sleep mode time of the battery, computing a charge state value from a measurement of the no-load voltage at the terminals of the battery at a wake-up time of the battery, and computing an error in the measurement of the no-load voltage due to the relaxation of the battery. The error is computed as a function of the current temperature of the battery and of a target relaxation duration modelled for each temperature. The initial value of the charge state is computed based on a comparison between the recorded and computed charge state values and as a function of the error.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.