Control device of motor driven vehicle, control method of motor driven vehicle and non-transitory computer readable storage medium storing control program of motor driven vehicle

A control method of a motor driven vehicle comprising:

• a step of generating a torque command signal to drive a motor in accordance with a driver's operation of the vehicle configured to travel by rotational driving of the motor,
• a step of detecting a temperature of a battery of the vehicle, and
• a step of controlling an inverter to extract a pulse-like direct current from the battery, in case where the temperature of the battery is below a predetermined temperature at which a motor drivable power is continuously extractable,
• the step of controlling the inverter to extract the pulse-like direct current from the battery including:
• controlling the inverter to cyclically repeat an on-period to extract the motor drivable direct current from the battery and an off-period in which, after the on-period, the power is not extracted from the battery until the motor drivable direct current becomes extractable from the battery again, calculating a maximum torque that the motor is capable of outputting in case where the pulse-like direct current is extracted from the battery, comparing the maximum torque with the torque command signal, setting a smaller one of the maximum torque and the torque command signal as a torque target value to drive the motor, and controlling an extraction of the pulse-like direct current by the inverter to drive the motor at the torque target value, and
• further comprising a step of, by the inverter, converting, to a phase current, the pulse-like direct current extracted from the battery in the on-period, and driving the motor.

A non-transitory computer readable storage medium storing a control program of a motor driven vehicle that causes a computer to execute:

• a step of generating a torque command signal to drive a motor in accordance with a driver's operation of the vehicle configured to travel by rotational driving of the motor,
• a step of detecting a temperature of a battery of the vehicle, and
• a step of controlling an inverter to extract a pulse-like direct current from the battery, in case where the temperature of the battery is below a predetermined temperature at which a motor drivable power is continuously extractable,
• the step of controlling the inverter to extract the pulse-like direct current from the battery including:
• controlling the inverter to cyclically repeat an on-period to extract the motor drivable direct current from the battery and an off-period in which, after the on-period, the power is not extracted from the battery until the motor drivable direct current becomes extractable from the battery again, calculating a maximum torque that the motor is capable of outputting in case where the pulse-like direct current is extracted from the battery, comparing the maximum torque with the torque command signal, setting a smaller one of the maximum torque and the torque command signal as a torque target value to drive the motor, and controlling an extraction of the pulse-like direct current by the inverter is controlled to drive the motor at the torque target value, and
• further causes the computer to execute a step of, by the inverter, converting, to a phase current, the pulse-like direct current extracted from the battery in the on-period, and driving the motor.