The parking assistance method includes: measuring a first received voltage generated in a receiving coil; and assisting alignment between coils by presenting to a vehicle occupant a result of having determined whether or not power can be supplied on the basis of a potential difference previously obtained and the first received voltage. The previously obtained potential difference is a potential difference between a second received voltage of the receiving coil measured when the alignment between the coils is executed before assisting the alignment between the coils, and a third received voltage of the receiving coil measured after the alignment and the power supply are completed.

A non-contact power feeding device includes multiple power feeding elements that are disposed spatially separated from one another in a movement direction, an AC power supply that supplies AC power to the power feeding elements, multiple power receiving elements that are provided in a moving body and that receive AC power in a non-contact manner, and a power receiving circuit that converts the AC power received by the power receiving elements and that outputs to an electrical load. When a length of the power feeding elements in the movement direction is LT, a separation distance between the power feeding elements is DT, a length of the power receiving elements in the movement direction is LR, and a separation distance between the power receiving elements is DR, the relationship DT≤DR and the relationship (2×LR+DR)≤LT are satisfied.

A non-contact power feeding device includes multiple power feeding elements that are disposed spatially separated from one another in a movement direction, an AC power supply that supplies AC power to the power feeding elements, multiple power receiving elements that are provided in a moving body and that receive AC power in a non-contact manner, and a power receiving circuit that converts the AC power received by the power receiving elements and that outputs to an electrical load. When a length of the power feeding elements in the movement direction is LT, a separation distance between the power feeding elements is DT, a length of the power receiving elements in the movement direction is LR, and a separation distance between the power receiving elements is DR, the relationship DT≤DR and the relationship (2×LR+DR)≤LT are satisfied.

The external vehicle charging system includes an inductive coil configured to provide an alternating magnetic field to a movable receiver coil of a vehicle, an adjustable arm coupled to the movable receiver coil, a sensor configured to detect a position of the movable receiver coil of the vehicle, and a processor connected to the inductive coil, the adjustable arm, and the sensor. The processor is configured to determine a charging request, and, in response to the charging request, activate the adjustable arm so that the distance between the inductive coil and the movable receiver is reduced.

The external vehicle charging system includes an inductive coil configured to provide an alternating magnetic field to a movable receiver coil of a vehicle, an adjustable arm coupled to the movable receiver coil, a sensor configured to detect a position of the movable receiver coil of the vehicle, and a processor connected to the inductive coil, the adjustable arm, and the sensor. The processor is configured to determine a charging request, and, in response to the charging request, activate the adjustable arm so that the distance between the inductive coil and the movable receiver is reduced.

A system for inspecting wireless charging of an electric vehicle includes: a wireless charger configured to transmit electric power through a transmission pad disposed on an inspection reference line of a rail; a centering unit configured to align a position of a reception pad on a vertical position of the transmission pad through a driving roller on which the electric vehicle is positioned; and an inspector configured to connect a wireless diagnosing communication, wirelessly charge a high voltage battery, and integrally inspect operation status of at least one of a battery management system (BMS), a battery cooling system, a battery charging system, or a high voltage distribution system during the wireless charging of the high voltage battery by receiving a test information from an electric power control unit (EPCU) of the electric vehicle connected through the wireless diagnosing communication.

A conductor arrangement for an inductive power transfer, the conductor arrangement comprising at least three coils arranged along a longitudinal axis and formed of at least one conductor; and at least two winding heads arranged opposite one another and in which conductor sections of each coil extend along one another and along the longitudinal axis; wherein, within at least one of the winding heads, the conductor sections of the first and second coils that extend along the longitudinal axis are arranged at a first distance to one another, the first distance ≥zero, and the conductor section of the third coil that extends along the longitudinal axis is arranged at second distances to said conductor sections of the first and second coils, the second distances being larger than the first distance. Also disclosed are an inductive power transfer arrangement and methods for providing conductor arrangements for an inductive power transfer.

A method for a dynamic inductive wireless power transmission includes providing an AC/DC power converter that receives three-phase power and provides regulated DC output current, connecting a trunk cable to the AC/DC power converter output and to multiple power transmitter modules. The trunk cable connects inputs of the power transmitter modules in series. The power transmitter modules transmit inductive wireless power over an air gap. The method includes providing a system controller that detects a vehicle containing a receiver coil and confirms if the vehicle should receive the inductive wireless power from the multiple power transmitter modules, and includes configuring the system controller to communicate with the AC/DC power converter to maintain the regulated DC output current at a constant value and transmit the inductive wireless power to the vehicle through the multiple power transmitter modules when the vehicle should receive the inductive wireless power.

A method for a dynamic inductive wireless power transmission includes providing an AC/DC power converter that receives three-phase power and provides regulated DC output current, connecting a trunk cable to the AC/DC power converter output and to multiple power transmitter modules. The trunk cable connects inputs of the power transmitter modules in series. The power transmitter modules transmit inductive wireless power over an air gap. The method includes providing a system controller that detects a vehicle containing a receiver coil and confirms if the vehicle should receive the inductive wireless power from the multiple power transmitter modules, and includes configuring the system controller to communicate with the AC/DC power converter to maintain the regulated DC output current at a constant value and transmit the inductive wireless power to the vehicle through the multiple power transmitter modules when the vehicle should receive the inductive wireless power.

Transmitter assemblies and methods for making and using the same. The transmitter assembly can be used for magnetic power transfer. The transmitter assembly can include a primary inductor configured to produce an electromagnetic field. The transmitter assembly can include a back shield unit including a primary back shield that has a first surface proximal to the primary inductor and a second surface opposite to the first surface. The primary back shield is at least partially made of a ferromagnetic material and has a property that is non-uniformly distributed from a center region of the primary back shield to an outer perimeter region of the primary back shield. The property includes a thickness, a magnetic property, or a combination thereof. When used in wireless charging, the transmitter assembly results in improved coupling factor, misalignment tolerance, efficiency, magnetic emissions and z-height coupling distance of a magnetic power transfer profile.