| 摘要 |
The invention relates to a method, a control unit (10) and a battery system for calculating a resulting capacity of a battery (15) during operation. The possibility to estimate the remaining energy in a battery being unloaded is useful to determine the remaining operational time of the battery before the battery must be recharged or replaced. The invention comprises a compact and fast method, divided into two parts. A first part generates a table from at least two measured discharge curves. Certain calculations are then made and the final values are normalized before they are entered into the table. A second part comprises a supervision part in which the voltage, discharge current and discharge time of the battery are measured and registered at certain intervals. By utilizing the table and the measured values a resulting capacity is calculated, which is adjusted in a subsequent step by iteration of the resulting capacity and the average final voltage of the battery.
|
