Method of Predicting SOC Control Based On Variable Time and Vehicle Thereof

摘要

The variable time-based battery charging/discharging prediction control method applied to the vehicle 1 of the present invention is the time of battery charging and discharging according to the accuracy of the battery OCV (Open Circuit Voltage) after the vehicle ECU 10 confirms the ignition from ignition on to off. Battery charge/discharge history control (S20 to S30) in which the change is considered, and then battery charge amount calculation control (S40 to S50) to calculate the battery OCV_SOC (State Of Charge) applied to the battery OCV_SOC update (S60) By performing the power generation control of the MHSG system (3), the amount of charge and discharge of the battery is considered in the setting of the recall time (Recal Time) to improve battery OCV_SOC reliability, and in particular, the actual battery SOC by the recall time reflecting the difference in battery OCV stabilization time. By recognizing the OCV_SOC high by the contrasting voltage, unnecessary battery discharge is prevented, thereby implementing a feature that can further improve fuel efficiency.