Method for determining the performance of a storage battery
US6534992B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 7, 2002 |
| Grant date | Mar 18, 2003 |
| Priority date | — |
| Expiry date | Feb 7, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/388
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for determining performance of a storage battery including evaluating a time profile of voltage drop in the storage battery by application of a heavy current load, determining a voltage A from voltage response U(t) of the storage battery after switching on the heavy current load, determining a state value A1 from the voltage value A, battery temperature TBAT and state of charge SOC, comparing state value A1 with a preset value A1x which depends at least on associated battery temperature (TBAT) and associated state of charge (SOC) of the storage battery, wherein the present value A1x is calculated from comparison values A1T which are determined from the state values A1 for previous heavy current loads applied to the storage battery, and determining performance of the storage battery from the difference between the present value A1x and the state value A1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.