A vehicle 2 includes a power receiving unit 11 which receives electrical power sent from a power supply unit 4; a relative position acquisition unit 21 which acquires a relative position of the power receiving unit 11 relative to the power supply unit 4; and an alignment aid unit 22 which aids in alignment of the power receiving unit 11 relative to the power supply unit 4, by notifying to the driver of information relative to displacement of the power receiving unit 11 relative to the power supply unit 4, based on the relative position acquired by the relative position acquisition unit 21. The alignment aid unit 22 is switchable between a first notification which notifies the information relative to displacement by way of an image display device 12, and a second notification which notifies the information relative to displacement by way of a vehicle information presenting device 14.

A vehicle 2 includes a power receiving unit 11 which receives electrical power sent from a power supply unit 4; a relative position acquisition unit 21 which acquires a relative position of the power receiving unit 11 relative to the power supply unit 4; and an alignment aid unit 22 which aids in alignment of the power receiving unit 11 relative to the power supply unit 4, by notifying to the driver of information relative to displacement of the power receiving unit 11 relative to the power supply unit 4, based on the relative position acquired by the relative position acquisition unit 21. The alignment aid unit 22 is switchable between a first notification which notifies the information relative to displacement by way of an image display device 12, and a second notification which notifies the information relative to displacement by way of a vehicle information presenting device 14.

A method for pairing a power terminal and an electric vehicle in a power station for electric vehicles, wherein the method includes powering the terminal-side coil stage of a power terminal with a test electric quantity to determine whether the power terminal and an electric vehicle are in a paired condition, at which the power terminal and the electric vehicle can exchange electric power, or in an unpaired condition, at which the power terminal and the electric vehicle cannot exchange electric power.

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 power transmission device includes a power transmission coil configured to supply electric power via a wireless connection to a power reception coil mounted on a vehicle, a cover covering at least the top surface of the power transmission coil in an axial direction, a foreign-matter detection coil provided between the power transmission coil and the cover, and an elevating mechanism configured to move the power transmission coil and the foreign-matter detection coil up and down with respect to the ground while keeping a gap between the power transmission coil and the foreign-matter detection coil. The foreign-matter detection coil is separated from the cover with a predetermined distance in the axial direction before detecting foreign matter.

A power transmission device includes a movable part which comes up and down with respect to the ground, and an elevating mechanism which moves the movable part up and down. A defrosting method for a power transmission device measures a temperature of the power transmission device, and compares the measured temperature with a threshold preliminarily set for determining a freeze of the power transmission device so as to determine whether the power transmission device is frozen. The defrosting method for a power transmission device excites a power transmission coil when determining that the power transmission device is frozen.

A power transmission device includes a movable part which comes up and down with respect to the ground, and an elevating mechanism which moves the movable part up and down. A defrosting method for a power transmission device measures a temperature of the power transmission device, and compares the measured temperature with a threshold preliminarily set for determining a freeze of the power transmission device so as to determine whether the power transmission device is frozen. The defrosting method for a power transmission device excites a power transmission coil when determining that the power transmission device is frozen.

A charging system includes: a movable body including a frame and a battery provided in the frame; and a charging station configured to charge the battery. The movable body includes: a pressure detection unit configured to detect pressure in the frame; and a charging permission signal output unit configured to output a charging permission signal indicating that the pressure in the frame is detected to be equal to or higher than a threshold pressure. The charging station includes: a charging permission signal acquisition unit configured to acquire the charging permission signal from the charging permission signal output unit; and a power transmission unit configured to execute non-contact charging of the battery when the charging permission signal is acquired by the charging permission signal acquisition unit.

A charging system includes: a movable body including a frame and a battery provided in the frame; and a charging station configured to charge the battery. The movable body includes: a pressure detection unit configured to detect pressure in the frame; and a charging permission signal output unit configured to output a charging permission signal indicating that the pressure in the frame is detected to be equal to or higher than a threshold pressure. The charging station includes: a charging permission signal acquisition unit configured to acquire the charging permission signal from the charging permission signal output unit; and a power transmission unit configured to execute non-contact charging of the battery when the charging permission signal is acquired by the charging permission signal acquisition unit.