Control device for charging battery of electric vehicle

摘要

The battery charger includes the battery temperature sensing member (10), the battery voltage sensing member (30), the current sensing member (20), the charging mode switch (S1) and a charge control device (40). When the selected charging mode is a constant current/constant voltage method, if the battery temperature is above a maximum predetermined temperature, a charging end signal is produced. If the battery temperature is below a minimum predetermined temperature, the fully charged state is determined in accordance with the measured charging current and a charging end signal is produced. On the other hand, when the selected charging mode is a constant current charging mode, if the battery temperature is below the minimum predetermined temperature, the battery voltage change between successive routines is determined. If the battery voltage change is below a predetermined voltage, the charging end signal is produced.