Electric vehicle and control apparatus for the same

Patent metadata

Field	Value
Publication number	US-10889284-B2
Application number	US-201916278284-A
Country	US
Kind code	B2
Filing date	Feb 18, 2019
Priority date	Feb 22, 2018
Publication date	Jan 12, 2021
Grant date	Jan 12, 2021

Abstract

An electric vehicle allows a user to experience changes in acceleration g-force, as with a conventional power plant, including: a transmission that sets a gearshift position based on a gearshift position command value to be supplied, and reduces a rotation speed of a motor with the gear ratio based on the gearshift position to rotationally drive wheels; a user operation unit that outputs the gearshift position command value and a speed control amount, based on user operation; and a controller that sets a DC voltage command value or an AC voltage command value to an operation-based value corresponding to the gearshift position and the speed control amount, and, on the condition that operation on the user operation unit satisfies a predetermined condition, sets the DC voltage command value or the AC voltage command value to a value higher than the operation-based value for causing a change in acceleration.

First claim

What is claimed is:

1. An electric vehicle comprising:
a motor;
a wheel;
a DC voltage generator configured to generate a DC voltage based on a DC voltage command value to be supplied;
an inverter configured to convert the DC voltage into an AC voltage based on an AC voltage command value to be supplied, and apply the AC voltage to the motor;
a transmission configured to set a gearshift position based on a gearshift position command value to be supplied, and reduce a rotation speed of the motor with a gear ratio based on the gearshift position to rotationally drive the wheel;
a user operation unit configured to output the gearshift position command value and a speed control amount, based on user operation; and
a controller configured to set each of the DC voltage command value and the AC voltage command value to an operation-based value corresponding to the gearshift position and the speed control amount, and, when operation on the user operation unit is upshifting during acceleration, set each of the DC voltage command value and the AC voltage command value to a value higher than the operation-based value for causing a change in acceleration, and set the DC voltage to a voltage higher than a normal rated voltage.

2. The electric vehicle as claimed in claim 1 , wherein the controller is configured to keep setting each of the DC voltage command value and the AC voltage command value to the value higher than the operation-based value until a predetermined time elapses after the gearshift position has been changed.

3. A control apparatus for an electric vehicle including:
a motor;
a wheel;
a DC voltage generator configured to generate a DC voltage based on a DC voltage command value to be supplied;
an inverter configured to convert the DC voltage into an AC voltage based on an AC voltage command value to be supplied, and apply the AC voltage to the motor;
a transmission configured to set a gearshift position based on a gearshift position command value to be supplied, and reduce a rotation speed of the motor with a gear ratio based on the gearshift position to rotationally drive the wheels; and
a user operation unit configured to output the gearshift position command value and a speed control amount, based on user operation,
the control apparatus being configured to set the DC voltage command value and the AC voltage command value to an operation-based value corresponding to the gearshift position and the speed control amount, and,
when operation on the user operation unit is upshifting during acceleration, to set each of the DC voltage command value and the AC voltage command value to a value higher than the operation-based value for causing a change in acceleration, and to set the DC voltage to a voltage higher than a normal rated voltage.

4. The control apparatus as claimed in claim 3 , wherein the DC voltage command value and the AC voltage command value are each kept to the value higher than the operation-based value until a predetermined time elapses after the gearshift position has been changed.

Assignees

• Honda Motor Co Ltd

Inventors

• Nishii Fumiya

Classifications

• Y02T10/72

  Electric energy management in electromobility · CPC title

• B60W20/19

  for achieving enhanced acceleration · CPC title

• B60W10/08 Primary

  including control of electric propulsion units, e.g. motors or generators · CPC title

• B60K6/26

  characterised by the motors or the generators · CPC title

• B60W10/11

  Stepped gearings · CPC title