POWER RECEPTION APPARATUS, VEHICLE, POWER TRANSMISSION APPARATUS, POWER TRANSMISSION AND RECEPTION SYSTEM, AND CONTROL METHOD

• US 20170313203A1
• Filed: 04/26/2017
• Published: 11/02/2017
• Est. Priority Date: 04/27/2016
• Status: Active Grant

• Current Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Original Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Inventors: Amari, Yusaku
• Granted Patent: US 10,562,397 B2
• Time in Patent Office: Days
• CPC Class Codes: B60L 53/36 by positioning the vehicle
• CPC Class Codes: B60L 53/37 using optical position determination, e.g. using cameras
• CPC Class Codes: B60L 53/38 specially adapted for charging by inductive energy transfer
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles

Abstract

A power reception apparatus includes a secondary coil which receives electric power in a non-contact manner from a primary coil which is disposed on a plane defined by a front-rear direction and a left-right direction which are at right angles to each other, a drive part which can change a relative position on the plane of the secondary coil relative to the primary coil, a display unit, and a processing unit for processing an image to be displayed on the display unit. The processing unit displays the relative position and the gradient of the secondary coil on the display unit. A display mode which is used when the secondary coil is not included in the target zone in relation to the left-right direction is different from a display mode which is used when the secondary coil is included in the target zone in relation to the left-right direction.

Claims

1. A power reception apparatus, comprising:

a secondary coil which receives electric power in a non-contact manner from a primary coil which is disposed on a plane defined by a front-rear direction and a left-right direction which are at right angles to each other;

a drive part for changing a relative position of the secondary coil on the plane relative to the primary coil;

a display unit; and

a processing unit for processing an image to be displayed on the display unit,

wherein the processing unit determines a target zone on the plane which includes the primary coil,

the processing unit calculates the relative position and a gradient of the secondary coil relative to the primary coil based on a coupling coefficient between the primary coil and the secondary coil, and a change with time in the coupling coefficient,

the processing unit displays information on the relative position and information on the gradient of the secondary coil in a predetermined display mode on the display unit, and

a first display mode which is the display mode used when the secondary coil is not included in the target zone in relation to the left-right direction is different from a second display mode which is the display mode used when the secondary coil is included in the target cone in relation to the left-right direction.

3. The power reception apparatus according to claim 1,

wherein the processing unit displays information on the relative position in relation to the left-right direction more in the first display mode than in the second display mode on the display unit.

4. The power reception apparatus according to claim 1,

wherein the processing unit displays information on the relative position in relation to the front-rear direction more in the second display mode than in the first display mode on the display unit.

5. The power reception apparatus according to claim 1,

wherein the processing unit displays information on the gradient of the secondary coil with higher accuracy in the first display mode than in the second display mode on the display unit.

6. The power reception apparatus according to claim 1,

wherein the display on the display unit which changes according to a change in the relative position changes more greatly in the second display mode than in the first display mode.

7. The power reception apparatus according to claim 1,

wherein the processing unit displays information on the target zone on the display unit.

8. The power reception apparatus according to claim 1,

wherein the processing unit calculates a gradient of the secondary coil based on a change with time in information on the relative position in relation to the left-right direction and a change with time in information on the relative position in relation to the front-rear direction.

9. The power reception apparatus according to claim 1,

wherein the information on the relative position includes information indicating the relative position by a figure, and

the information on the gradient of the secondary coil includes information indicating a gradient of the secondary coil relative to the primary coil by a figure.

10. A vehicle comprising the power reception apparatus according to claim 1.

2. A power reception apparatus, comprising:

a secondary coil which receives electric power in a non-contact manner from a primary coil which is disposed on a plane defined by a front-rear direction and a left-right direction which are at right angles to each other;

a drive part for changing a relative position of the secondary coil on the plane relative to the primary coil;

a display unit;

a processing unit for processing an image to be displayed on the display unit; and

an acquisition unit for acquiring information on a position of the primary coil and information on a position of the secondary coil,

wherein the processing unit determines a target zone on the plane which includes the primary coil,

the processing unit calculates the relative position and a gradient of the secondary coil relative to the primary coil based on each position information on the primary coil and the secondary coil which are acquired by the acquisition unit, and a change with time in the information on the positions of the primary and secondary coils,

the processing unit displays information on the relative position and information on the gradient of the secondary coil in a predetermined display mode on the display unit, and

a first display mode which is the display mode used when the secondary coil is not included in the target zone in relation to the left-right direction is different from a second display mode which is the display mode used when the secondary coil is included in the target zone in relation to the left-right direction.

11. A power transmission apparatus, comprising:

a primary coil which is disposed on a plane defined by a front-rear direction and a left-right direction which are at right angles to each other;

a transmitting unit for transmitting information to a power reception apparatus having a secondary coil which receives electric power in a non-contact manner from the primary coil, a drive part for changing a relative position of the secondary coil on the plane relative to the primary coil, and a display unit; and

a processing unit for processing an image to be displayed on the display unit of the power reception apparatus,

wherein the processing unit determines a target zone on the plane which includes the primary coil,

the processing unit calculates the relative position and a gradient of the secondary coil relative to the primary coil based on a coupling coefficient between the primary coil and the secondary coil, and a change with time in the coupling coefficient,

the transmitting unit transmits information on the relative position and information on the gradient of the secondary coil to the power reception apparatus,

the information on the relative position and the information on the gradient of the secondary coil are displayed in a predetermined display mode on the display unit of the power reception apparatus, and

a first display mode which is the display mode used when the secondary coil is not included in the target zone in relation to the left-right direction is different from a second display mode which is the display mode used when the secondary coil is included in the target zone in relation to the left-right direction.

12. A power transmission apparatus, including:

a primary coil which is disposed on a plane defined by a front-rear direction and a left-right direction which are at right angles to each other;

a transmitting unit for transmitting information to a power reception apparatus having a secondary coil which receives electric power in a non-contact manner from the primary coil, a drive part for changing a relative position of the secondary coil on the plane relative to the primary coil, and a display unit;

a processing unit for processing an image to be displayed on the display unit of the power reception apparatus; and

an acquisition unit for acquiring information on a position of the primary coil and information on a position of the secondary coil,

wherein the processing unit determines a target zone on the plane which includes the primary coil,

the processing unit calculates the relative position and a gradient of the secondary coil relative to the primary coil based on each position information on the primary coil and the secondary coil which are acquired by the acquisition unit, and a change with time in the information on the positions of the primary and secondary coils,

the transmitting unit transmits information on the relative position and information on the gradient of the secondary coil to the power reception apparatus,

the information on the relative position and the information on the gradient of the secondary coil are displayed in a predetermined display mode on the display unit of the power reception apparatus, and

a first display mode which is the display mode used when the secondary coil is not included in the target zone in relation to the left-right direction is different from a second display mode which is the display mode used when the secondary coil is included in the target zone in relation to the left-right direction.

13. A charging system, comprising:

a primary coil which is disposed on a plane defined by a front-rear direction and a left-right direction which are at right angles to each other;

a secondary coil which receives electric power in a non-contact manner from the primary coil;

a drive part for changing a relative position of the secondary coil on the plane relative to the primary coil;

a display unit; and

a processing unit for processing an image to be displayed on the display unit,

wherein the processing unit determines a target zone on the plane which includes the primary coil,

the processing unit calculates the relative position and a gradient of the secondary coil relative to the primary coil based on a coupling coefficient between the primary coil and the secondary coil, and a change with time in the coupling coefficient,

the processing unit displays information on the relative position and information on the gradient of the secondary coil in a predetermined display mode on the display unit, and

a first display mode which is the display mode used when the secondary coil is not included in the target zone in relation to the left-right direction is different from a second display mode which is the display mode used when the secondary coil is included in the target none in relation to the left-right direction.

14. A charging system, including:

a primary coil which is disposed on a plane defined by a front-rear direction and a left-right direction which are at right angles to each other;

a secondary coil which receives electric power in a non-contact manner from the primary coil;

a drive part for changing a relative position of the secondary coil on the plane relative to the primary coil;

a display unit;

a processing unit for processing an image to be displayed on the display unit; and

an acquisition unit for acquiring information on a position of the primary coil and information on a position of the secondary coil,

wherein the processing unit determines a target zone on the plane which includes the primary coil,

the processing unit calculates the relative position and a gradient of the secondary coil relative to the primary coil based on each position information on the primary coil and the secondary coil which are acquired by the acquisition unit, and a change with time in the information on the positions of the primary and secondary coils, and

the processing unit displays information on the relative position and information on the gradient of the secondary coil in a predetermined display mode on the display unit, and

a first display mode which is the display mode used when the secondary coil is not included in the target zone in relation to the left-right direction is different from a second display mode which is the display mode used when the secondary coil is included in the target zone in relation to the left-right direction.

15. A control method for supporting an alignment in position of a secondary coil, which receives electric power in a non-contact manner from a primary coil which is disposed on a plane defined by a front-rear direction and a left-right direction which are at right angles to each other, with the primary coil by means of an image which is displayed on a display unit, comprising the steps of:

determining a target zone on the plane which includes the primary coil;

calculating a relative position of the secondary coil on the plane relative to the primary coil which is changed by a drive part for changing the relative position and a gradient of the secondary coil relative to the primary coil based on a coupling coefficient between the primary coil and the secondary coil, and a change with time in the coupling coefficient; and

displaying information on the relative position and information on the gradient of the secondary coil in a predetermined display mode on the display unit,

wherein a first display mode which is the display mode used when the secondary coil is not included in the target zone in relation to the left-right direction is different from a second display mode which is the display mode used when the secondary coil is included in the target zone in relation to the left-right direction.

16. A control method for supporting an alignment in position of a secondary coil, which receives electric power in a non-contact manner from a primary coil which is disposed on a plane defined by a front-rear direction and a left-right direction which are at right angles to each other, with the primary coil by means of an image which is displayed on a display unit, comprising the steps of:

determining a target zone on the plane which includes the primary coil;

calculating a relative position of the secondary coil on the plane relative to the primary coil which is changed by a drive part for changing the relative position and a gradient of the secondary coil relative to the primary coil based on information on a position of the primary coil and information on a position of the secondary coil which are acquired by an acquisition unit for acquiring information on the positions of the primary coil and the secondary coil, and a change with time in the information on the positions of the primary and secondary coils; and

displaying information on the relative position and information on the gradient of the secondary coil in a predetermined display mode on the display unit,

wherein a first display mode which is the display mode used when the secondary coil is not included in the target zone in relation to the left-right direction is different from a second display mode which is the display mode used when the secondary coil is included in the target zone in relation to the left-right direction.