Abstract: A vehicle charging system includes: a power supply device including a power supply fitting body and provided in a stop space of a vehicle; and a power receiving fitting body that is provided on a bottom of the vehicle and is able to be fitted to and removed from the power supply fitting body in an insertion/removal direction. The power receiving fitting body includes power receiving terminals electrically connected no a battery provided in the vehicle, a power receiving terminal holding part that holds the power receiving terminals, and an opposite space forming part that is arranged adjacent to the power receiving terminal holding part in the insertion/removal direction and forms an opposite space facing the power receiving terminals.

Abstract: A vehicle charging system includes: a power supply device including a power supply fitting body and provided in a stop space of a vehicle; and a power receiving fitting body that is provided on a bottom of the vehicle and is able to be fitted to and removed from the power supply fitting body in an insertion/removal direction. The power receiving fitting body includes power receiving terminals electrically connected no a battery provided in the vehicle, a power receiving terminal holding part that holds the power receiving terminals, and an opposite space forming part that is arranged adjacent to the power receiving terminal holding part in the insertion/removal direction and forms an opposite space facing the power receiving terminals.

Abstract: Disclosed is a power feed system which can highly efficiently feed power to a power receiving unit from a power feed-side even though distance fluctuation or lateral shift occurs between a power feed-side helical coil and a power receiving-side helical coil. A distance measuring unit measures a inter-coil distance L1 between the power feed-side helical coil and the power receiving-side helical coil, and a control units, adjust capacitances of a power feed-side varactor and a power receiving-side varactor in accordance with the inter-coil distance L1 measured by the measuring unit.

Abstract: A power reception apparatus to which power is transferred from a power transmission apparatus in a contactless manner includes: a ferrite provided in a plate shape and having a first principal face and a second principal face; an annular coil provided on the first principal face of the ferrite; and a shield provided on the second principal face of the ferrite, wherein an outer peripheral portion of the coil is placed on an inner side relative to an outer peripheral portion of the ferrite, such that part of the first principal face is exposed on an outer-peripheral-portion side of the ferrite, and an outer peripheral side of the shield includes a stepped portion provided at a position away from the second principal face of the ferrite, such that part of the second principal face is exposed on the outer-peripheral -portion side of the ferrite.

Abstract: A power reception device includes a flat plate-like core and a coil spirally wound around the core and having a winding central axis extending in a horizontal direction. The coil is formed like a flat plate to have a longer side portion and a shorter side portion when the coil is viewed in cross section at a plane perpendicular to an extending direction of the coil. The coil is wound around the core such that the longer side portion faces a surface of the core. Therefore, the thickness of the power reception device can be reduced.

Abstract: A foreign object detector includes a plurality of first coils and a plurality of second coils. The plurality of first coils are arranged along an upper surface of a power transmission coil. The plurality of second coils are provided to correspond to the plurality of first coils, with the second coils each being arranged to face a corresponding one of the first coils. An outer shape of each of the plurality of first coils and each of the plurality of second coils is smaller than an outer shape of the power transmission coil when the power transmission coil is viewed two-dimensionally from above the power transmission coil.

Abstract: An impedance control device includes a diode bridge rectifier circuit and a controller. The controller is configured to control, based on impedance of a battery that is coupled to output terminals of the diode bridge rectifier circuit, the capacitance of a first capacitance variable unit and capacitance of a second capacitance variable unit of the diode bridge rectifier circuit.

Abstract: A power reception apparatus to which power is transferred from a power transmission apparatus in a contactless manner includes: a ferrite provided in a plate shape and having a first principal face and a second principal face; an annular coil provided on the first principal face of the ferrite; and a shield provided on the second principal face of the ferrite, wherein an outer peripheral portion of the coil is placed on an inner side relative to an outer peripheral portion of the ferrite, such that part of the first principal face is exposed on an outer-peripheral-portion side of the ferrite, and an outer peripheral side of the shield includes a stepped portion provided at a position away from the second principal face of the ferrite, such that part of the second principal face is exposed on the outer-peripheral -portion side of the ferrite.

Abstract: A power reception device includes a power reception unit having a first capacitor, receiving electric power in a non-contact manner from an externally provided power transmission unit, a first housing case housing the power reception unit inside, and a first anchor member anchoring the first capacitor. The first housing case includes a first shield defining a region where an electromagnetic field developed around the power reception unit is emitted. The first capacitor is anchored by the first anchor member at a position spaced apart from the first shield.

Abstract: The non-contact electric power reception device includes an electric power reception portion and an electric load device. The electric power reception portion is configured such that best transmission efficiency at a power supply frequency of the power supply portion used for non-contact electric power transmission is achieved when the electric power reception portion is arranged with its position being displaced from a position of the electric power transmission portion. Preferably, the electric power reception portion is configured such that a peak frequency at which transmission efficiency at the time of change in power transmission frequency exhibits a peak and a power supply frequency match with each other when the electric power reception portion is arranged with positions in a horizontal direction of a central axis of the electric power reception portion and a central axis of the electric power transmission portion being displaced from each other.

Abstract: An impedance control device includes a diode bridge rectifier circuit and a controller. The controller is configured to control, based on the impedance of a battery that is coupled to output terminals of the diode bridge rectifier circuit, the capacitances of first and second capacitance variable units of the diode bridge rectifier circuit.

Abstract: There is provided a shield case allowing efficient power delivery while ensuring environmental resistant such as strength and waterproof and provided a contactless feed system using the shield case. A contactless feed system includes: a feed-side device installed in a fixed body; a receive-side device installed in a mobile body and fed electric power from the feed-side device in a contactless manner, and a shield case used in the feed-side device of the contactless feed system includes: a case open toward the receive-side device; a coil housed in an interior of the case; and a cover covering an opening of the case, wherein a load support member extending from a bottom surface of the case to an inner surface of the cover is provided inside the case.

Abstract: This vehicle includes a vehicle-mounted component mounted below a rear floor panel and an electric power reception device mounted below the rear floor panel and including an electric power reception portion receiving electric power in a non-contact manner from an electric power transmission device including an externally provided electric power transmission portion, and the vehicle-mounted component is arranged flush with and around the electric power reception device.

Abstract: A power reception device includes: a vehicle-side resonant portion mounted on a vehicle and resonating, through an electromagnetic field, with a facility-side resonant portion provided in an external facility; and a vehicle-side support including a first support member supporting the vehicle-side resonant portion, and a second support member spaced apart from the vehicle-side resonant portion and supporting the first support member, wherein a dielectric tangent of the first support member is smaller than a dielectric tangent of the second support member.

Abstract: A power reception device includes a flat plate-like core and a coil spirally wound around the core and having a winding central axis extending in a horizontal direction. The coil is formed like a flat plate to have a longer side portion and a shorter side portion when the coil is viewed in cross section at a plane perpendicular to an extending direction of the coil. The coil is wound around the core such that the longer side portion faces a surface of the core. Therefore, the thickness of the power reception device can be reduced.

Abstract: An object of the present invention is to provide a power supplying system able to supply electric power with high efficiency from a power supplying section to a power receiving section by suppressing a reduction of transmission efficiency caused by a gap between central axes of a power supplying coil and a power receiving coil. Two power supplying helical coils are provided. When a power receiving coil is arranged opposite to the power supplying helical coils with a gap in an axis direction thereof, electric power is transmitted from the power supplying helical coils by electromagnetic resonance. A CPU detects one closest to the power receiving coil of two power supplying helical coils as an adjacent coil, and controls on/off of the switches so as to supply the electric power to only the adjacent coil.

Abstract: A resonance type non-contact power feeding system 10 includes, as a power reception side (secondary side) apparatus, a load device 50, a secondary coil 40, a secondary resonance coil 45, and a rectifier 160. A battery 52 is provided inside a load housing 54 of the load device 50. In addition, like a power transmission side metal shield 80 on the power transmission side, the resonance type non-contact power feeding system 10 includes a power reception side metal shield 90 that covers the secondary coil 40 and the secondary resonance coil 45, and a rectifier shield 170 that covers the rectifier 160. Moreover, a power reception side large metal shield 130 that covers the outside of the power reception side metal shield 90 and the rectifier shield 170 is provided.

Abstract: Disclosed is a power feed system which can highly efficiently feed power to a power receiving unit from a power feed-side even though distance fluctuation or lateral shift occurs between a power feed-side helical coil and a power receiving-side helical coil. A distance measuring unit measures a inter-coil distance L1 between the power feed-side helical coil and the power receiving-side helical coil, and a control units, adjust capacitances of a power feed-side varactor and a power receiving-side varactor in accordance with the inter-coil distance L1 measured by the measuring unit.

Abstract: To facilitate the protection of an exposed portion of a core wire of a cable and enable the acquisition of desired electric wire characteristics A coating portion at an end of a composite electric wire is peeled to expose a core wire and the exposed core wires are bundled and welded to form a composite exposed portion having a welded portion. The composite exposed portion is heated and then immersed in a powder material with which an immersion portion of an immersion container is filled and the powder material is melted to allow a melt thereof to adhere to the composite exposed portion to form a protective member covering the composite exposed portion. Heat-up of the composite exposed portion is set to a melting temperature of the powder material or higher.

Abstract: To provide a method of manufacturing a cable when the cable is obtained by coating a core wire and a method of manufacturing a composite electric wire. To coat an outer circumferential side of a core wire or a plurality of bundled core wires with a coating portion made of an insulating polymeric material, first any exposure target region of the core wire is held below a melting temperature of the insulating polymeric material and a coating target region of the core wire positioned outside the exposure target region is heated to the melting temperature of a powder material (insulating polymeric material in a powder state). Then, the coating portion is formed by immersing the core wire of the coating target region having been heated in the powder material inside an immersion container to allow the insulating polymeric material to adhere to the core wire of the coating target region.