Drive control system in series-hybrid vehicle

摘要

A drive control system in a series-hybrid utility vehicle comprises a motor for driving a wheel; a battery; an engine electric generator for generating the electric power charged into the battery; and a controller configured to estimate an SOC value of the battery, and control the motor and the engine electric generator in accordance with an HV mode or an EV mode; wherein when the estimated SOC value is less than a predetermined low threshold, the controller stops electric power supply from the battery to the motor; and when the estimated SOC value is less than a predetermined medium threshold greater than the predetermined low threshold, the controller sets the HV mode, and controls the motor and the engine electric generator such that a driving power of the motor is suppressed in a state where the motor is supplied with the electric power from the battery.

主权项

1. A drive control system in a series-hybrid utility vehicle comprising:
a motor for driving a wheel; a battery for storing electric power supplied to the motor; an engine electric generator including an electric generator for generating the electric power charged into the battery and an engine for actuating the electric generator; and a controller configured to estimate an SOC value of the battery, and control the motor and the engine electric generator in accordance with an HV mode in which the utility vehicle drives in a state where the engine electric generator is activated or an EV mode in which the utility vehicle drives in a state where the engine electric generator is deactivated; wherein the controller compares the estimated SOC value to a predetermined low threshold and a predetermined medium threshold greater than the predetermined low threshold; wherein when the estimated SOC value is less than the predetermined low threshold, the controller controls the motor and the engine electric generator such that electric power supply from the battery to the motor is stopped and the electric power generated in the engine electric generator is supplied to the motor; and when the estimated SOC value is not less than the predetermined low threshold and less than the predetermined medium threshold, the controller sets the HV mode, and controls the motor and the engine electric generator such that an allowable maximum driving power of the motor is suppressed in a state where the motor is supplied with the electric power from the battery.