Wireless power-transmitting device and system

• US 9,849,797 B2
• Filed: 10/19/2015
• Issued: 12/26/2017
• Est. Priority Date: 07/23/2013
• Status: Active Grant

• Current Assignee: IHI Corporation
• Original Assignee: IHI Corporation
• Inventors: Niizuma, Motonao
• Primary Examiner(s): Wells, Kenneth B
• Application Number:
  US14/886,656
• Publication Number:
  US 20160039293A1
• Time in Patent Office: 799 Days
• Field of Search: 320109
• CPC Class Codes: B60L 2210/30 AC to DC converters
• CPC Class Codes: B60L 2210/40 DC to AC converters
• CPC Class Codes: B60L 2240/667 Precipitation
• CPC Class Codes: B60L 50/51 characterised by AC-motors
• CPC Class Codes: B60L 53/12 Inductive energy transfer
• CPC Class Codes: B60L 53/122 Circuits or methods for driving the primary coil, e.g. supplying electric power to the coil
• 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 53/30 Constructional details of charging stations
• 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 53/62 in response to charging parameters, e.g. current, voltage or electrical charge
• CPC Class Codes: B60L 53/65 involving identification of vehicles or their battery types
• CPC Class Codes: B60L 53/66 Data transfer between charging stations and 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 10/72 Electric energy management in electromobility
• 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
• CPC Class Codes: Y02T 90/167 Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: Y04S 30/14 : Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing

Abstract

A wireless power-transmitting device includes a power-transmitting coil installed in a predefined parking area, a receiving device configured to receive a signal for a power supply instruction transmitted through a windshield or through a rear window of a vehicle, and a control device configured to control supply of electric power from the power-transmitting coil to a power-receiving coil of the vehicle based on the signal received by the receiving device.

Claims

1. A wireless power-transmitting device, which includes a power-transmitting coil installed in a predefined parking region and wirelessly supplies electric power from the power-transmitting coil to a power-receiving coil of a vehicle parked in the parking region, the wireless power-transmitting device comprising:

a receiving device configured to;

receive a first signal for a power supply instruction transmitted through a windshield when the parking region is a head-in parking area, and

receive a second signal for the power supply instruction transmitted through a rear window of the vehicle when the parking region is a back-in parking area; and

a control device configured to control supply of electric power from the power-transmitting coil to the power-receiving coil of the vehicle based on the signal received by the receiving device.

2. The wireless power-transmitting device according to claim 1, wherein the receiving device is installed obliquely in an upper side with respect to the vehicle so that the receiving device looks into an inside of the vehicle through the windshield or through the rear window of the vehicle parked in the parking region.

3. The wireless power-transmitting device according to claim 1, wherein a reception area of the receiving device is limited so that the receiving device receives only the signal transmitted from the vehicle parked in the parking region.

4. The wireless power-transmitting device according to claim 1,

wherein the power-transmitting coil, the receiving device, and the control device are associated and provided in each of a plurality of parking regions, and

the control device controls the supply of electric power from the associated power-transmitting coil based on the signal received by the associated receiving device.

5. The wireless power-transmitting device according to claim 1,

wherein the power-transmitting coil and the receiving device are associated and provided in each of a plurality of parking regions, and

the control device controls the supply of electric power from the power-transmitting coil associated with the receiving device which receives the signal.

6. The wireless power-transmitting device according to claim 1, wherein the signal for the power supply instruction is a light signal.

7. The wireless power-transmitting device according to claim 1, wherein the signal for the power supply instruction is a directional radio wave signal.

8. A wireless power-transmitting system for wirelessly supplying electric power, the wireless power-transmitting system comprising:

the wireless power-transmitting device according to claim 1; and

the vehicle which includes;

the power-receiving coil configured to wirelessly receive electric power supplied from the power-transmitting coil of the wireless power-transmitting device; and

the transmitting device configured to transmit the signal for the power supply instruction through at least one of the windshield and the rear window.

9. The wireless power-transmitting system according to claim 8, wherein the transmitting device includes:

a first transmitting device configured to transmit the first signal for the power supply instruction through the windshield; and

a second transmitting device configured to transmit the second signal for the power supply instruction through the rear window.

10. The wireless power-transmitting device according to claim 1, wherein the first signal and the second signal have different wavelengths from each other.

11. The wireless power-transmitting device according to claim 10,

wherein the receiving device includes a filter, and

the filter is configured to transmit the first signal without transmitting the second signal when the parking region is the head-in parking area, and the filter is configured to transmit the second signal without transmitting the first signal when the parking region is the back-in parking area.