Method for controlling electrically driven vehicle, and electrically driven vehicle

Patent metadata

Field	Value
Publication number	US-10933866-B2
Application number	US-201816320138-A
Country	US
Kind code	B2
Filing date	Apr 3, 2018
Priority date	Apr 13, 2017
Publication date	Mar 2, 2021
Grant date	Mar 2, 2021

Abstract

According to a control method for an electric vehicle of the present invention, when an electric vehicle ( 100 ) moves at a first velocity and approaches an object ( 200 ) on the basis of instructed information, the electric vehicle ( 100 ) is temporarily stopped at a position at which the distance between the electric vehicle ( 100 ) and the object ( 200 ) is a first stopping distance, after which the velocity is switched to a second velocity that is slower than the first velocity, the electric vehicle ( 100 ) is caused to approach the object ( 200 ), and the electric vehicle ( 100 ) is stopped at position at which the distance between the electric vehicle ( 100 ) and the object ( 200 ) is a second stopping distance that is shorter than the first stopping distance.

First claim

The invention claimed is:

1. A control method for an electric vehicle which stops in accordance with a distance to a surrounding object, the control method comprising:
causing, in a case where the electric vehicle is moved at a first speed to approach a target object based on an instruction to move in a direction of the target object, the electric vehicle to stop temporarily at a position at which a distance between the electric vehicle and the target object reaches a first stop distance,
subsequently, bringing, in a case where the instruction to move in the direction of the target object continues for a certain time period, the electric vehicle closer to the target object at a second speed lower than the first speed and causing the electric vehicle to stop again at a position at which the distance between the electric vehicle and the target object reaches a second stop distance shorter than the first stop distance.

2. The control method for an electric vehicle, according to claim 1 , wherein, in a case where the electric vehicle is moved away from the target object based on the instruction, the electric vehicle is moved at the second speed until a position at which the distance between the electric vehicle and the target object reaches a third stop distance, then the electric vehicle is moved at the first speed after the distance between the electric vehicle and the target object exceeds the third stop distance.

3. The control method for an electric vehicle, according to claim 2 ,
wherein the first stop distance is variable, and
wherein the third stop distance of a case where the electric vehicle moves away from the target object is larger than the first stop distance of a case where the electric vehicle moves closer to the target object.

4. The control method for an electric vehicle, according to claim 1 , wherein the second speed is a constant speed.

5. The control method for an electric vehicle, according to claim 1 ,
wherein the electric vehicle includes a running-state notifier that notifies a running state, and
wherein contents notified by the running-state notifier differ between a case where the electric vehicle moves at the first speed and a case where the electric vehicle moves at the second speed.

6. The control method for an electric vehicle, according to claim 5 , wherein the running-state notifier audibly notifies a running state through generation of sound.

7. The control method for an electric vehicle, according to claim 5 , wherein the running-state notifier visually notifies a running state by lighting or blinking of illumination or change of color.

8. The control method for an electric vehicle, according to claim 1 , wherein the certain time period is from 0.5 seconds to 1 second.

9. The control method for an electric vehicle, according to claim 1 , wherein the first stop distance is not less than 0.5 m and is not greater than 3 m.

10. The control method for an electric vehicle, according to claim 1 , wherein the second stop distance is not less than 0.05 m and is not greater than 1 m.

11. An electric vehicle comprising a controller that performs control by the control method according to claim 1 .

Assignees

• Panasonic Corp

Inventors

• Ando Takeshi
• Imaoka Noriaki
• Uematsu Hiroyuki

Classifications

• B60Q1/525

  automatically indicating risk of collision between vehicles in traffic or with pedestrians, e.g. after risk assessment using the vehicle sensor data · CPC title

• B60W30/09 Primary

  Taking automatic action to avoid collision, e.g. braking and steering · CPC title

• A61G5/04 Primary

  motor-driven (A61G5/06 takes precedence; motor-operated rests A61G5/12; for vehicles with handlebars, equipped with three or more wheels B62K5/003, B62K5/023) · CPC title

• B60Q1/507

  specific to autonomous vehicles · CPC title

• B60T7/22

  initiated by contact of vehicle, e.g. bumper, with an external object, e.g. another vehicle {, or by means of contactless obstacle detectors mounted on the vehicle} · CPC title