A wireless power supply system includes a power supply coil installed on the ground, an inner balloon in which a power supply coil is mounted and configured to expand and contract to adjust a vertical position of the power supply coil, and an outer balloon provided to cover both the power supply coil and the inner balloon and configured to expand to occupy a space between the power supply coil and a power receiving coil, and wirelessly supplies power from the power supply coil to the power receiving coil.

A vehicle system includes an instructing portion that issues open/close instructions for a charging disconnector, a discharging disconnector, and a pair of contactors. A diagnosis start determination portion determines a diagnosis start timing before entering a trolleyless section. A remaining battery capacity checks whether a battery unit has a battery capacity necessary in a trolleyless section travel. A relay operation check portion checks operability of a charging disconnector, the discharging disconnector, and the pair of contactors based on certain open/close states of a plurality of relays depending on the open/close instructions. An abnormality determination portion determines trolleyless section travel is not allowed when the relay operation check portion is incapable of checking operability or necessary remaining battery capacity, the remaining battery capacity check portion, the relay operation check portion, and the abnormality determination portion being operated when the diagnosis start determination portion determines that it is diagnosis start timing.

A wireless vehicle charging system includes a first cluster of charging pads wired to one another and configured to convert electrical energy to an electromagnetic field. The system further includes a first base station in communication with the first cluster of charging pads. The first base station is programmed to receive information from an electric vehicle and transmit the information to a second base station in communication with a second cluster of charging pads in a path of the electric vehicle.

A foreign object removal device removes a foreign object on a vehicle-body undersurface of a vehicle traveling a road surface in wireless power transfer from a power transmission unit of a power transmission device installed on the road surface to a power reception unit of a power reception device mounted on the vehicle-body undersurface, and comprises a foreign object removal unit installed on the road surface around the power transmission unit and removing the foreign object on the vehicle-body undersurface.

A contactless power supply system includes: a power supply pad including a power supply core formed of a magnetic material, and a power supply coil that uses the power supply core as a magnetic path; and a filter circuit including an inductor coil, the filter circuit being connected to the power supply pad. The power supply pads to which the respective filter circuits are connected are brought into a face-to-face relation so that electric power is transmitted from one power supply pad to the other power supply pad in a contactless manner. An inductor coil of at least either one of the filter circuits is provided to the power supply core of the power supply pad to which the filter circuit is connected, and the inductor coil uses the power supply core as a magnetic path.

A vehicle charging system comprises: a non-contact type charging apparatus that charges a battery of a vehicle in a non-contact state by facing a power-receiving coil mounted on the vehicle; and a charging controller that sequentially perform charging of vehicles stopping aligned in a first direction by changing relative position between the vehicles and the charging apparatus along the first direction.

A charging device according to one embodiment includes a charging unit, a measuring unit, and a detecting unit. The detecting unit detects an angle of inclination of a vehicle with respect to a longitudinal direction based on a first difference, a distance, and a first angle, the first difference being a difference between a first vertical distance to a first point in a first plane and a second vertical distance to a second point in the first plane having a position in a traveling direction different from that of the first point, the distance being a distance between the first point and the second point.

This disclosure provides systems and methods for charging a vehicle. A vehicle and charging station can be designed such that an electric or hybrid vehicle can operate in a fashion similar to a conventional vehicle by being opportunity charged throughout a known route.

The invention relates to a method of operating a three phase primary winding structure of a system for inductive power transfer, wherein the primary winding structure includes a first phase line, a second phase line and a third phase line, wherein in a standard operational mode a first phase input voltage, a second phase input voltage and a third phase input voltage are controlled such that a predetermined phase shift between all three phase input voltages is provided, wherein in a modified operational mode the first phase input voltage, the second phase input voltage and the third phase input voltage are controlled such that the set of phase shift values includes at most two non-zero values and all non-zero phase shift values are equal. Furthermore, the invention relates to a primary unit of a system for inductive power transfer.

A rechargeable electric vehicle comprises a power rectifier to convert alternating current electrical energy to direct current electrical energy; a power inverter to convert direct current electrical energy to alternating current electrical energy; a rechargeable energy storage for storing direct current electrical energy; and a coil. In a first mode, alternating current electrical energy is received by the coil and passed through the power rectifier to form direct current electrical energy for storage in the rechargeable energy storage. In a second mode, direct current electrical energy is passed through the power inverter to form alternating current electrical energy and the alternating current electrical energy is passed through the coil for wireless transfer, over an air gap, to a secondary coil.