System and method for characterizing the health of a rechargeable battery
US9157968B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2012 |
| Grant date | Oct 13, 2015 |
| Priority date | — |
| Expiry date | Feb 18, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/367
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for characterizing the health of a rechargeable battery includes measuring initial condition parameters of a rechargeable battery prior to the battery being placed into service. A baseline normalization of the initial condition parameters is performed using a standardized relationship data set for a norm battery to generate baseline normalization coefficients to normalize the initial condition parameters to the norm battery. Run-time condition parameters of the battery are measured after the battery is in service as part of a continuous built in test system. The run-time condition parameters are normalized using the standardized relationship data set for the norm battery and the baseline normalization coefficients to generate normalized run-time condition parameters for the battery. The normalized run-time condition parameters are then compared to the standardized relationship data set for the norm battery to calculate a state-of-charge and state-of-health for the battery as the run-time condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.