Abstract: A power feeding device performing wireless power feeding to a flying object includes: a power feeding unit performing power feeding to the flying object disposed at a power feeding position; a power transmission coil provided in the power feeding unit and generating a magnetic field by energization; a relay coil provided in the power feeding unit, receiving the magnetic field generated from the power transmission coil and magnetically coupled to the power transmission coil, and magnetically coupled to a power receiving coil provided in the flying object in a case where the flying object is positioned at the power feeding position; and a second magnetic body provided in the power feeding unit and used for magnetic coupling between the relay coil and the power receiving coil.

Abstract: A power feeding device performing wireless power feeding to a flying object includes: a power feeding unit performing power feeding to the flying object disposed at a power feeding position; a power transmission coil provided in the power feeding unit and generating a magnetic field by energization; a relay coil provided in the power feeding unit, receiving the magnetic field generated from the power transmission coil and magnetically coupled to the power transmission coil, and magnetically coupled to a power receiving coil provided in the flying object in a case where the flying object is positioned at the power feeding position; and a second magnetic body provided in the power feeding unit and used for magnetic coupling between the relay coil and the power receiving coil.

Abstract: A coil apparatus includes a base having a front surface and a rear surface, a magnetic portion provided on a side of the front surface of the base, and a coil portion which is provided on an opposite side from the base with respect to the magnetic portion and includes a conductive wire. The magnetic portion includes a first passing region, the base includes a second passing region, and the conductive wire is drawn out from the rear surface of the base through the first passing region and the second passing region.

Abstract: A coil device includes a coil portion including at least a coil, a housing including a base disposed on a side of a first surface of the coil portion and a cover disposed on a side of a second surface of the coil portion and accommodating the coil portion in an internal space formed by the base and the cover, and a fixing member fixing the cover to the base. The fixing member includes a first fixing portion disposed along at least the cover on a first outer periphery of the housing surrounding the base and the cover.

Abstract: A first coil device includes a first coil portion that faces a second coil portion of a second coil device in a first direction and includes a conductive wire, and at least one nonmagnetic member that includes a protrusion protruding to an outside of the first coil portion in a second direction orthogonal to the first direction. The nonmagnetic member includes an eddy current interrupter that interrupts a part of an eddy current generated in the nonmagnetic member.

Abstract: A coil device includes a coil portion including at least a coil, a housing including a base disposed on a side of a first surface of the coil portion and a cover disposed on a side of a second surface of the coil portion and accommodating the coil portion in an internal space formed by the base and the cover, and a fixing member fixing the cover to the base. The fixing member includes a first fixing portion disposed along at least the cover on a first outer periphery of the housing surrounding the base and the cover.

Abstract: Provided is a wireless power-supplying system equipped with a power-supplying coil disposed on the ground side, and a power-receiving coil that is mounted on a movable body and wirelessly receives power supplied from the power-supplying coil. In addition, the wireless power-supplying system is provided with a recovery coil in the vicinity of a space between the power-supplying coil and the power-receiving coil such that a wound face thereof intersects leakage flux occurring when the power is supplied from the power-supplying coil to the power-receiving coil.

Abstract: A coil apparatus includes a base having a front surface and a rear surface, a magnetic portion provided on a side of the front surface of the base, and a coil portion which is provided on an opposite side from the base with respect to the magnetic portion and includes a conductive wire. The magnetic portion includes a first passing region, the base includes a second passing region, and the conductive wire is drawn out from the rear surface of the base through the first passing region and the second passing region.

Abstract: A shield apparatus is used during wireless power supply from a power-transmitting coil to a power-receiving coil of a vehicle, and includes a multilayer magnetic shield member installed around the power-transmitting coil and arranged so as to surround a space between the power-transmitting coil and the power-receiving coil during supply of electric power.

Abstract: Provided is a wireless power-supplying system equipped with a power-supplying coil disposed on the ground side, and a power-receiving coil that is mounted on a movable body and wirelessly receives power supplied from the power-supplying coil. In addition, the wireless power-supplying system is provided with a recovery coil in the vicinity of a space between the power-supplying coil and the power-receiving coil such that a wound face thereof intersects leaka.ge flux occurring when the power is supplied from the power-supplying coil to the power-receiving coil.

Abstract: A shield apparatus is used during wireless power supply from a power-transmitting coil to a power-receiving coil of a vehicle, and includes a multilayer magnetic shield member installed around the power-transmitting coil and arranged so as to surround a space between the power-transmitting coil and the power-receiving coil during supply of electric power.