Method and device for determining battery discharge capability, and power supply system
US7764049B2 · kind B2 · utility
15Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2008 |
| Grant date | Jul 27, 2010 |
| Priority date | — |
| Expiry date | Jul 8, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/389
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for determining battery discharge capability includes estimating the optimum state vector X by an extended Kalman filter operation. Using the estimated state vector X, element parameters of an equivalent circuit are renewed. Furthermore, based on the equivalent circuit using the renewed element parameters, at the time of discharging with a predetermined current pattern from a battery, a voltage drop ΔV is estimated. Therefore, the discharge capacity of the battery is determined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.