The present invention relates to a method for activating a segment for enabling electrical power delivery to vehicles, the segment being one of a plurality of segments consecutively arranged along a single track line of an electric road system that further comprises a base station, the method comprising: receiving, at the base station, identification data transmitted from a vehicle, the identification data identifying the vehicle; associating an activation key with the identification data with each other; transmitting the activation key from the base station to the segment; receiving, at the segment and via short range radio communication, an activation request sent from the vehicle, wherein the activation request comprises an identification key associated with the identification data; confirming, at the segment, that the received identification key is associated with the received activation key; and upon positive confirmation, activating the segment for enabling power delivery to the vehicle.

The present invention relates to a method for activating a segment for enabling electrical power delivery to vehicles, the segment being one of a plurality of segments consecutively arranged along a single track line of an electric road system that further comprises a base station, the method comprising: receiving, at the base station, identification data transmitted from a vehicle, the identification data identifying the vehicle; associating an activation key with the identification data with each other; transmitting the activation key from the base station to the segment; receiving, at the segment and via short range radio communication, an activation request sent from the vehicle, wherein the activation request comprises an identification key associated with the identification data; confirming, at the segment, that the received identification key is associated with the received activation key; and upon positive confirmation, activating the segment for enabling power delivery to the vehicle.

A method for controlling a non-contact electric power supply system in which an electric power receiving coil mounted on a host vehicle is opposed to an electric power transmitting coil set on a ground, the non-contact electric power supply system supplying electric power from the electric power transmitting coil to the electric power receiving coil in a non-contact manner and, when a moving object is detected in a detection region around the electric power receiving coil or the electric power transmitting coil during the electric power supply, stopping or reducing the electric power supply, the method including: determining whether another vehicle is parked around the host vehicle; and expanding, when determining that the other vehicle is parked, the detection region as compared to when not determining that the other vehicle is parked.

A wireless charging system includes a wireless power receiver, at least one receiver-side magnetic coupling member, a wireless power transmitter and at least one transmitter-side magnetic coupling member. The receiver-side magnetic coupling member is disposed on the wireless power receiver. The transmitter-side magnetic coupling member is disposed on the wireless power transmitter and is configured to attract the receiver-side magnetic coupling member. At least one of the wireless power receiver and the wireless power transmitter is movable.

A wireless charging system includes a wireless power receiver, at least one receiver-side magnetic coupling member, a wireless power transmitter and at least one transmitter-side magnetic coupling member. The receiver-side magnetic coupling member is disposed on the wireless power receiver. The transmitter-side magnetic coupling member is disposed on the wireless power transmitter and is configured to attract the receiver-side magnetic coupling member. At least one of the wireless power receiver and the wireless power transmitter is movable.

In a parking assistance system comprising: a power transmission device provided on a ground side and configured to transmit power; and a power receiving device provided in a vehicle and configured to receive the power transmitted by the power transmission device and supply the power to an electric load, the power transmission device includes: a power transmission coil configured to transmit the power; imaging means for imaging the power transmission coil; and sending means for sending the power receiving device an image captured by the imaging means, and the power receiving device includes: a power receiving coil configured to receive the power transmitted by the power transmission coil; receiving means for receiving the image; and display control means for displaying the image received by the receiving means on display means.

In a parking assistance system comprising: a power transmission device provided on a ground side and configured to transmit power; and a power receiving device provided in a vehicle and configured to receive the power transmitted by the power transmission device and supply the power to an electric load, the power transmission device includes: a power transmission coil configured to transmit the power; imaging means for imaging the power transmission coil; and sending means for sending the power receiving device an image captured by the imaging means, and the power receiving device includes: a power receiving coil configured to receive the power transmitted by the power transmission coil; receiving means for receiving the image; and display control means for displaying the image received by the receiving means on display means.

A contactless power feeding system includes: a primary circuit for supplying primary power to a power feeding coil; and a primary control circuit for controlling the primary circuit. The primary control circuit acquires, from a secondary control circuit, a secondary measured value and a secondary target value of secondary power received by a power receiving coil. The primary control circuit performs control processing and update processing alternately and repeatedly. The control processing is processing of controlling the primary circuit to bring the primary measured value into conformity with a primary target value. The update processing is processing of updating the primary target value. The update processing includes processing of calculating the primary target value based on transfer efficiency to be determined by the primary measured value and the secondary measured value and on the secondary target value.

A contactless electricity supply system for a vehicle includes a power transmitter coil unit provided on a ground-side and a lifting device for lifting up the power transmitter coil unit from the ground. The power transmitter coil unit supplies electricity to a power receiving coil unit by magnetic coupling therewith. The power transmitter coil unit includes a case that houses a power transmitter coil. A bulge is formed on an upper face of the case around a winding center axis of the power transmitter coil wounded in a planar manner in a plan view.

A contactless electricity supply system for a vehicle includes a power transmitter coil unit provided on a ground-side and a lifting device for lifting up the power transmitter coil unit from the ground. The power transmitter coil unit supplies electricity to a power receiving coil unit by magnetic coupling therewith. The power transmitter coil unit includes a case that houses a power transmitter coil. A bulge is formed on an upper face of the case around a winding center axis of the power transmitter coil wounded in a planar manner in a plan view.