Non-contact power receiving apparatus, non-contact power transmitting apparatus, and non-contact power transmitting/receiving system

• US 9,180,782 B2
• Filed: 06/20/2011
• Issued: 11/10/2015
• Est. Priority Date: 06/20/2011
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Nakamura, Toru, Ichikawa, Shinji
• Primary Examiner(s): Barnie, Rexford
• Assistant Examiner(s): Ortiz, Elim
• Application Number:
  US14/122,091
• Publication Number:
  US 20140097671A1
• Time in Patent Office: 1,604 Days
• Field of Search: 307/9.1, 307/104, 307/108
• US Class Current: 1/1
• CPC Class Codes: B60L 2250/10 by alarm
• CPC Class Codes: B60L 3/04 Cutting off the power supply under fault conditions protective devices and circuit arrangements in general H01H; H02H
• CPC Class Codes: B60L 53/124 Detection or removal of foreign bodies
• 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 53/36 by positioning the vehicle
• CPC Class Codes: B60L 53/37 using optical position determination, e.g. using cameras
• CPC Class Codes: H02J 50/005 Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/60 responsive to the presence of foreign objects, e.g. detection of living beings
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• CPC Class Codes: H02J 50/80 involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H02J 7/007 Regulation of charging or discharging current or voltage
• CPC Class Codes: H02J 7/04 Regulation of charging current or voltage
• 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 non-contact power receiving apparatus includes a power reception unit for receiving electric power from a power transmitting apparatus outside of a vehicle in a non-contact manner, and a control device for controlling the electric power transmission from the power transmitting apparatus. The control device controls the electric power transmission based on a monitoring result obtained by monitoring the surroundings of the vehicle, and a door state detection result obtained by detecting whether or not a door of the vehicle is open. The control device causes, if the door state detection result indicates that the door is open, the power transmitting apparatus to reduce the power of the electric power transmission, and controls the electric power transmission without using the monitoring result.

Claims

1. A non-contact power receiving apparatus comprising:

a power reception unit for receiving electric power from a power transmitting apparatus outside of a vehicle in a non-contact manner; and

a control device for controlling the electric power transmission from said power transmitting apparatus, said control device controlling said electric power transmission based on a monitoring result obtained by monitoring the surroundings of said vehicle, and a door state detection result obtained by detecting whether or not a door of said vehicle is open, said control device causing, if said door state detection result indicates that said door is open, said power transmitting apparatus to reduce the power of said electric power transmission, and controlling said electric power transmission without using said monitoring result, wherein said power transmitting apparatus includes a power transmission unit for transmitting the electric power to said power reception unit in a non-contact manner, and said control device causes a request to be made of said power transmitting apparatus to transmit prescribed electric power for making position adjustment between said power reception unit and said power transmission unit, and after said position adjustment is completed and a parking position of the vehicle is fixed causes are request to be made of said power transmitting apparatus to transmit electric power larger than said prescribed electric power and causes the start of detection of an object intruding into the surroundings of the vehicle based on said monitoring result, and causes issuance of a warning if the intruding object is detected.

2. The non-contact power receiving apparatus according to claim 1, wherein said control device causes said power transmitting apparatus to reduce the power of said electric power transmission if said intruding object is detected.

3. The non-contact power receiving apparatus according to claim 2, further comprising:

a monitoring device for outputting said monitoring result to said control device; and

a warning unit for issuing said warning in response to a command from said control device, wherein said monitoring device includes one of a camera, a thermal camera, a sonar, an infrared sensor, and a weight sensor, and said warning unit issues the warning by using one of a horn, an engine operating sound, a sound for notifying the surroundings of the existence of the vehicle, an air blowing sound, and blown air.

4. The non-contact power receiving apparatus according to claim 1, wherein said power transmitting apparatus and said power reception unit transmit and receive the electric power in a non-contact manner by electromagnetic field resonance.

6. The non-contact power receiving apparatus according to claim 2, wherein said power transmitting apparatus and said power reception unit transmit and receive the electric power in a non-contact manner by electromagnetic field resonance.

7. The non-contact power receiving apparatus according to claim 3, wherein said power transmitting apparatus and said power reception unit transmit and receive the electric power in a non-contact manner by electromagnetic field resonance.

5. A non-contact power transmitting/receiving system comprising:

a power transmission unit outside of a vehicle;

a power reception unit mounted on said vehicle for receiving electric power from said power transmission unit in a non-contact manner;

and a control device for controlling the electric power transmission from said power transmission unit, said control device controlling said electric power transmission based on a monitoring result obtained by monitoring the surroundings of said vehicle, and a door state detection result obtained by detecting whether or not a door of said vehicle is open, said control device causing, if said door state detection result indicates that said door is open, said power transmission unit to reduce the power of said electric power transmission, and controlling said electric power transmission without using said monitoring result, wherein said power transmitting apparatus includes a power transmission unit for transmitting the electric power to said power reception unit in a non-contact manner, and said control device causes a request to be made of said power transmitting unit to transmit prescribed electric power for making position adjustment between said power reception unit and said power transmission unit, and after said position adjustment is completed and a parking position of the vehicle is fixed, causes a request to be made of said power transmitting unit to transmit electric power larger than said prescribed electric power and causes the start of detection of an object intruding into the surroundings of the vehicle based on said monitoring result, and causes issuance of a warning if the intruding object is detected.