VEHICLE GUIDANCE APPARATUS AND VEHICLE GUIDANCE METHOD

• US 20150057932A1
• Filed: 07/08/2014
• Published: 02/26/2015
• Est. Priority Date: 08/26/2013
• Status: Active Grant

• Current Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Original Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Inventors: NAKAGAWA, Tomoaki
• Granted Patent: US 9,994,255 B2
• Time in Patent Office: Days
• US Class Current: 701/533
• CPC Class Codes: B60L 2250/10 by alarm
• CPC Class Codes: B60L 2250/16 by display
• CPC Class Codes: B60L 3/0046 relating to electric energy storage systems, e.g. batteries or capacitors
• CPC Class Codes: B60L 53/126 Methods for pairing a vehicle and a charging station, e.g. establishing a one-to-one relation between a wireless power transmitter and a wireless power receiver
• CPC Class Codes: B60L 53/305 Communication interfaces
• 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: B62D 15/029 Steering assistants using warnings or proposing actions to the driver without influencing the steering system
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• 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
• CPC Class Codes: Y02T 90/16 Information or communication technologies improving the operation of electric vehicles

Abstract

A vehicle guidance apparatus includes a power supplying parameter acquisition device, a power receiving parameter storage device, a charge efficiency calculator, and a display processing device. The power supplying parameter acquisition device is configured to acquire in a electric vehicle a power supplying parameter which corresponds to a specification of a power supplier. The power receiving parameter storage device is configured to store a power receiving parameter corresponding to a specification of a power receiver. The charge efficiency calculator is configured to calculate a charge efficiency according to a relative position between the power supplier and the power receiver based on the power supplying parameter and the power receiving parameter. The display processing device is configured to display on a display a range of the charge efficiency with respect to a center of the power receiver to guide the electric vehicle.

Claims

1. A vehicle guidance apparatus to be mounted on an electric vehicle that receives supply power by a power receiving unit in the vehicle in a non-contact manner, charges a power storage device mounted in the vehicle by the received power, and is driven at least by the power stored in the power storage device, the supply power being supplied from a power supplying unit on the ground side, the vehicle guidance apparatus for guiding the electric vehicle so that a relative position between the power receiving unit and the power supplying unit is in a predetermined range,

the vehicle guidance apparatus comprising:

a power supplying parameter acquisition unit configured to acquire a power supplying parameter in the vehicle, the power supplying parameter corresponding to a specification of the power supplying unit;

a power receiving parameter storage unit configured to store a power receiving parameter corresponding to a specification of the power receiving unit;

a charge efficiency calculation unit configured to calculate a charge efficiency according to the relative position between the power supplying unit and the power receiving unit based on the power supplying parameter and the power receiving parameter; and

a display processing unit configured to display a range of the charge efficiency with respect to a center of the power receiving unit on a display unit.

2. The vehicle guidance apparatus according to claim 1,

wherein the display processing unit displays the charge efficiency range on the display unit at least in a vehicle width direction for a predicted direction of movement of the vehicle.

3. The vehicle guidance apparatus according to claim 1,

wherein the display processing unit displays the charge efficiency range on the display unit at least in a vehicle front-rear direction for a predicted direction of movement of the vehicle.

4. The vehicle guidance apparatus according to claim 1,

wherein the charge efficiency calculation unit, when calculating the charge efficiency, uses the same set of parameter as the power supplying parameter and the power receiving parameter for both a power supplying coil and a power receiving coil, the same set of parameter including at least one of a number of coil turns, a shape, a coil diameter, Q value, an inductance value, and an operating frequency.

5. The vehicle guidance apparatus according to claim 1,

wherein the power supplying parameter acquisition unit acquires the power supplying parameter from an on-ground antenna provided in the power supplying unit via a vehicle-side antenna provided in the vehicle.

6. The vehicle guidance apparatus according to claim 1,

wherein the power supplying parameter acquisition unit acquires the power supplying parameter of the power supplying unit from a navigation device of the vehicle, the power supplying parameter corresponding to a current power receiving position of the vehicle.

7. A vehicle guidance apparatus to be mounted on an electric vehicle including a power receiver configured to receive supply power in a non-contact manner from a power supplier provided on a ground side to charge a storage device, the vehicle guidance apparatus comprising:

a power supplying parameter acquisition device configured to acquire in the electric vehicle a power supplying parameter which corresponds to a specification of the power supplier;

a power receiving parameter storage device configured to store a power receiving parameter corresponding to a specification of the power receiver;

a charge efficiency calculator configured to calculate a charge efficiency according to a relative position between the power supplier and the power receiver based on the power supplying parameter and the power receiving parameter; and

a display processing device configured to display on a display a range of the charge efficiency with respect to a center of the power receiver to guide the electric vehicle.

8. The vehicle guidance apparatus according to claim 7,

wherein the display processing device displays the range of the charge efficiency on the display at least in a vehicle width direction for a predicted direction of movement of the electric vehicle.

9. The vehicle guidance apparatus according to claim 7,

wherein the display processing device displays the range of the charge efficiency on the display at least in a vehicle front-rear direction for a predicted direction of movement of the electric vehicle.

10. The vehicle guidance apparatus according to claim 7,

wherein the charge efficiency calculator, when calculating the charge efficiency, uses a same set of parameter as the power supplying parameter and the power receiving parameter for both a power supplying coil and a power receiving coil, the same set of parameter including at least one of a number of coil turns, a shape, a coil diameter, Q value, an inductance value, and an operating frequency.

11. The vehicle guidance apparatus according to claim 7,

wherein the power supplying parameter acquisition device acquires the power supplying parameter from an on-ground antenna provided in the power supplier via a vehicle-side antenna provided in the electric vehicle.

12. The vehicle guidance apparatus according to claim 7,

wherein the power supplying parameter acquisition device acquires the power supplying parameter of the power supplier from a navigation device of the electric vehicle, the power supplying parameter corresponding to a current power receiving position of the electric vehicle.

13. A vehicle guidance apparatus to be mounted on an electric vehicle including power receiving means for receiving supply power in a non-contact manner from power supplying means provided on a ground side to charge a storage device, the vehicle guidance apparatus comprising:

power supplying parameter acquisition means for acquiring in the electric vehicle a power supplying parameter which corresponds to a specification of the power supplying means;

power receiving parameter storage means for storing a power receiving parameter corresponding to a specification of the power receiving means;

charge efficiency calculation means for calculating a charge efficiency according to a relative position between the power supplying means and the power receiving means based on the power supplying parameter and the power receiving parameter; and

display processing means for displaying on a display a range of the charge efficiency with respect to a center of the power receiving means to guide the electric vehicle.

14. A vehicle guidance method comprising:

acquiring in an electric vehicle a power supplying parameter which corresponds to a specification of a power supplier provided on a ground side;

storing a power receiving parameter corresponding to a specification of a power receiver which is provided in the electric vehicle and which is configured to receive supply power in a non-contact manner from the power supplier to charge a storage device;

calculating a charge efficiency according to a relative position between the power supplier and the power receiver based on the power supplying parameter and the power receiving parameter; and

displaying on a display a range of the charge efficiency with respect to a center of the power receiver to guide the electric vehicle.