US 9,919,617 B2 · Control device for electric motor vehicle and control method for electric motor vehicle

Abstract

A control device for electric motor vehicle using a motor as a traveling drive source and configured to decelerate by a regenerative braking force of the motor includes a motor torque command value setter configured to set a first torque target value for traveling based on the vehicle information as a motor torque command value for traveling based on the vehicle information before a speed parameter proportional to a traveling speed of an electric motor vehicle becomes equal to or less than a predetermined value, and set a second torque target value for stopping the electric motor vehicle and maintaining a vehicle stopped state as the motor torque command value when the speed parameter becomes equal to or less than the predetermined value, a motor controller configured to control the motor on the basis of the motor torque command value.

Claims16

Dependent claims

A control device for an electric motor vehicle using an electric motor as a traveling drive source, comprising:

a motor controller configured to:
decelerate the electric motor vehicle by a regenerative braking force of the electric motor,
set a first torque target value for traveling based on vehicle information as a motor torque command value for traveling based on the vehicle information before a speed parameter proportional to a traveling speed of the electric motor vehicle becomes equal to or less than a predetermined value,
set a second torque target value for stopping the electric motor vehicle and maintaining a vehicle stopped state as the motor torque command value when the speed parameter becomes equal to or less than the predetermined value, and
control the electric motor on the basis of the motor torque command value,
wherein the motor controller stops the electric motor vehicle and maintains the electric motor vehicle stopped state by the second torque target value as the motor torque command value when the speed parameter becomes equal to or less than the predetermined value.

3 more elements

A control method performed by a motor controller for an electric motor vehicle using an electric motor as a traveling drive source, the method comprising:

a step of decelerating the electric motor vehicle by a regenerative braking force of the motor;
a step of setting, by the motor controller, a first torque target value for traveling based on vehicle information as a motor torque command value before a speed parameter proportional to a traveling speed of the electric motor vehicle becomes equal to or less than a predetermined value, and setting a second torque target value as the motor torque command value when the speed parameter becomes equal to or less than the predetermined value;
and
a step of controlling the electric motor on the basis of the motor torque command value,
wherein, in the step of controlling the electric motor, the electric motor vehicle is stopped and the electric motor vehicle stopped state is maintained by the second torque target value as the motor torque command value when the speed parameter becomes equal to or less than the predetermined value.

2 more elements

Dependencies are inferred from the claim text.

Control device for electric motor vehicle and control method for electric motor vehicle

Life of this patent

Control device for electric motor vehicle and control method for electric motor vehicle

Life of this patent

Abstract

Claims16