| 摘要 |
The present invention provides a system and a method for determining the state of charge of a battery. The system includes a battery model 1 having an input configured to receive an estimated state of charge value 21, which may be outputted by a coulomb counter. The battery model is configured to generate at least one voltage loss output (42, 43, 46) from which an estimated battery voltage is determined, the or each voltage loss output being representative of the contributions to voltage loss due to a parameter (22-26). The system also includes a comparator configured to determine a voltage error between the estimated battery voltage Vt and the actual battery voltage Vr. The battery model is configured to modify an adaptive state of charge weight (ω1- ω3) based on the determined voltage error, and the state of charge is determined by modifying the estimated state of charge with the adaptive state of charge weight. |
