US 12,240,352 B2
Control method for electric vehicle and control device for electric vehicle
Katsunori Nakamura, Kanagawa (JP); Akira Sawada, Kanagawa (JP); Takashi Nakajima, Kanagawa (JP); and Kengo Fujiwara, Kanagawa (JP)
Assigned to NISSAN MOTOR CO., LTD., Yokohama (JP)
Appl. No. 17/771,213
Filed by NISSAN MOTOR CO., LTD., Yokohama (JP)
PCT Filed Oct. 28, 2019, PCT No. PCT/JP2019/042132
§ 371(c)(1), (2) Date Apr. 22, 2022,
PCT Pub. No. WO2021/084574, PCT Pub. Date May 6, 2021.
Prior Publication US 2022/0379732 A1, Dec. 1, 2022
Int. Cl. B60L 7/18 (2006.01); B60L 7/14 (2006.01); B60L 15/20 (2006.01)
CPC B60L 7/18 (2013.01) [B60L 7/14 (2013.01); B60L 15/2009 (2013.01); B60L 2240/12 (2013.01); B60L 2240/423 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A control method for an electric vehicle which includes a motor as a traveling drive source and a controller configured to decelerate the electric vehicle by controlling a regenerative braking force of the motor, comprising using the controller to:
obtain an accelerator operation amount;
obtain an angular velocity of a rotating body that correlates to a rotation speed of a drive shaft which drives the electric vehicle;
calculate a first torque command value based on the accelerator operation amount;
set the first torque command value to a torque command value;
control a torque generated in the motor based on the torque command value;
set a target stop position at the time of stopping the electric vehicle;
calculate a target angular velocity of the rotating body according to a distance from the electric vehicle to the target stop position;
calculate a second torque command value for stopping the electric vehicle at the target stop position based on a difference between the target angular velocity and the obtained angular velocity; and
set the second torque command value to the torque command value and adjust the braking and driving forces of the motor according to a distance to the target stop position, when the accelerator operation amount decreases or becomes zero and the electric vehicle is about to stop.