Method for determining the operating state of an energy-storage battery
US6674266B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 12, 2002 |
| Grant date | Jan 6, 2004 |
| Priority date | — |
| Expiry date | Dec 12, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/388
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for determining the operating state of an energy-storage battery in assumed temperature and state of charge conditions, which has the following steps: a) measurement of a temperature variable (TACT) which is correlated with the battery temperature (TBAT), b) determination of the state of charge (SOCACT) of the energy-storage battery, c) determination of a further state variable (AACT) of the energy-storage battery, d) formation of a reference value (BV) from the reference between the determined state variable (AACT) and a corresponding state variable (ANEW) of an identical, new energy-storage battery with the same temperature variable (TACT) and the same state of charge (SOCACT), and e) determination of a predicted state variable (AP) as a measure of the operating state for an assumed temperature variable (TP) and an assumed state of charge (SOCP) from known comparison reference values (BT), which have been recorded as a function of temperature variables (T), states of charge (SOC) and the aging state of identical energy-storage batteries.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.