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

• US 9,263,917 B2
• Filed: 06/20/2011
• Issued: 02/16/2016
• 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: Ichikawa, Shinji
• Primary Examiner(s): Williams, Arun
• Application Number:
  US13/885,020
• Publication Number:
  US 20140092243A1
• Time in Patent Office: 1,702 Days
• Field of Search: 320/108
• US Class Current: 1/1
• CPC Class Codes: B60L 2210/10 DC to DC converters
• CPC Class Codes: B60L 2210/30 AC to DC converters
• CPC Class Codes: B60L 2210/40 DC to AC converters
• CPC Class Codes: B60L 2220/14 Synchronous machines
• CPC Class Codes: B60L 2240/662 Temperature
• CPC Class Codes: B60L 2240/80 Time limits
• CPC Class Codes: B60L 2250/22 by presence detection
• CPC Class Codes: B60L 50/16 with provision for separate direct mechanical propulsion
• CPC Class Codes: B60L 50/61 by batteries charged by engine-driven generators, e.g. series hybrid electric vehicles
• CPC Class Codes: B60L 50/66 Arrangements of batteries
• CPC Class Codes: B60L 53/12 Inductive energy transfer
• 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 53/305 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: B60L 58/12 responding to state of charge [SoC]
• CPC Class Codes: B60L 7/14 for vehicles propelled by ac motors
• CPC Class Codes: H02J 2310/48 for electric vehicles [EV] or hybrid vehicles [HEV]
• 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 50/80 : 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 7/00034 : Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
• CPC Class Codes: H04N 7/18 : Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
• 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 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

Abstract

A non-contact power receiving apparatus includes a power reception unit for receiving electric power in a non-contact manner from a power transmitting apparatus external to a vehicle, and a control device for controlling the transmitted power from the power transmitting apparatus. The control device controls the transmitted power based on a monitoring result obtained by monitoring the surroundings of the vehicle, and an occupant detection result obtained by detecting whether or not an occupant enters the vehicle. When the monitoring result indicates the approach of a moving object to the vehicle, the control device causes the power transmitting apparatus to reduce the transmitted power. The power transmitting apparatus and the power reception unit transmit and receive electric power in a non-contact manner by electromagnetic field resonance.

Claims

1. A non-contact power receiving apparatus comprising:

a power reception unit that receives electric power in a non-contact manner transmitted from a power transmitting apparatus external to a vehicle;

a control device that controls the transmitted power from the power transmitting apparatus, the control device controlling the transmitted power based on (i) a monitoring result obtained by monitoring surroundings of the vehicle, and (ii) an occupant detection result obtained by detecting whether or not an occupant enters the vehicle;

a monitoring unit that monitors a monitored region around the vehicle and outputs the monitoring result to the control device; and

a vehicle entry detection unit that detects whether or not the occupant enters the vehicle, wherein

after an approach of a moving object to the vehicle is detected based on an output from the monitoring unit, when it is detected that the moving object has moved to a non-monitored region, the control device detects whether or not the occupant enters the vehicle with the vehicle entry detection unit.

2. The non-contact power receiving apparatus according to claim 1, wherein

when the monitoring result of the monitoring unit indicates the approach of the moving object to the vehicle, the control device causes the power transmitting apparatus to reduce the transmitted power.

3. The non-contact power receiving apparatus according to claim 1, wherein

after the approach of the moving object to the vehicle is detected, when it is detected that the moving object has moved to the non-monitored region, the control device causes the power transmitting apparatus to continue power transmission if it is detected that the occupant has entered the vehicle, and causes the power transmitting apparatus to stop the power transmission if it is not detected that the occupant has entered the vehicle.

4. The non-contact power receiving apparatus according to claim 1, wherein

the monitoring unit is a camera that acquires an image of the monitored region, a thermo camera that acquires a temperature of the monitored region, or a monitoring device that detects the presence or absence of the moving object in the monitored region by one of ultrasound, electric wave, light, and a variation in weight, and

the vehicle entry detection unit detects at least one of opening/closing of a door of the vehicle and a variation in weight of the vehicle.

5. The non-contact power receiving apparatus according to claim 1, wherein

the power transmitting apparatus and the power reception unit transmit and receive electric power in a non-contact manner by electromagnetic field resonance.

6. A non-contact power transmitting apparatus comprising:

a power transmitting apparatus that transmits electric power in a non-contact manner to a power reception unit of a vehicle;

a control device that controls the transmitted power from the power transmitting apparatus, the control device controlling the transmitted power based on (i) a monitoring result obtained by monitoring surroundings of the vehicle, and (ii) an occupant detection result obtained by detecting whether or not an occupant enters the vehicle; and

a monitoring unit that monitors a monitored region around the vehicle and outputs the monitoring result to the control device, wherein

after an approach of a moving object to the vehicle is detected based on an output from the monitoring unit, when it is detected that the moving object has moved to a non-monitored region, the control device detects whether or not the occupant enters the vehicle with the monitoring unit.

7. The non-contact power transmitting apparatus according to claim 6, wherein

when the monitoring result of the monitoring unit indicates the approach of the moving object to the vehicle, the control device causes the power transmitting apparatus to reduce the transmitted power.

8. The non-contact power transmitting apparatus according to claim 6, wherein

after the approach of the moving object to the vehicle is detected, when it is detected that the moving object has moved to the non-monitored region, the control device causes the power transmitting apparatus to continue power transmission if it is detected that the occupant has entered the vehicle, and causes the power transmitting apparatus to stop the power transmission if it is not detected that the occupant has entered the vehicle.

9. The non-contact power transmitting apparatus according to claim 6, wherein

the monitoring unit is a camera that acquires an image of the monitored region, a thermo camera that acquires a temperature of the monitored region, or a monitoring device that detects the presence or absence of the moving object in the monitored region by one of ultrasound, electric wave, light, and a variation in weight.

10. The non-contact power transmitting apparatus according to claim 6, wherein

the power transmitting apparatus and the power reception unit transmit and receive electric power in a non-contact manner by electromagnetic field resonance.

11. A non-contact power transmitting and receiving system comprising:

a power transmitting apparatus external to a vehicle;

a power reception unit mounted on the vehicle that receives electric power transmitted in a non-contact manner from the power transmitting apparatus;

a control device that controls the transmitted power from the power transmitting apparatus, the control device controlling the transmitted power based on (i) a monitoring result obtained by monitoring the surroundings of the vehicle, and (ii) an occupant detection result obtained by detecting whether or not an occupant enters the vehicle;

a monitoring unit that monitors a monitored region around the vehicle and outputs the monitoring result to the control device; and

a vehicle entry detection unit that detects whether or not the occupant enters the vehicle, wherein

after an approach of a moving object to the vehicle is detected based on an output from the monitoring unit, when it is detected that the moving object has moved to a non-monitored region, the control device detects whether or not the occupant enters the vehicle with the vehicle entry detection unit.

12. The non-contact power transmitting and receiving system according to claim 11, wherein

when the monitoring result of the monitoring unit indicates the approach of the moving object to the vehicle, the control device causes the power transmitting apparatus to reduce the transmitted power.

13. The non-contact power transmitting and receiving system according to claim 11, wherein

the power transmitting apparatus and the power reception unit transmit and receive electric power in a non-contact manner by electromagnetic field resonance.