Provided is a multi-wavelength wireless optical charging system, which includes: a transmitter splitting low-power light of a predetermined threshold value or less into a predetermined range of wavelengths and transmitting the split light onto a space; and a receiver receiving the light transmitted from the transmitter and generating energy from multi-wavelength light which is light corresponding to a plurality of predetermined wavelengths in the received light to charge a device.

A wireless charging method includes: acquiring a charging type supported by a wireless charging device after handshake communication with the wireless charging device; and selecting a first receiving assembly and/or a second receiving assembly to charge batteries of a foldable-screen electronic device based on the charging type. By arranging the first receiving assembly and the second receiving assembly on the foldable-screen electronic device, at least one of the receiving assemblies can be selected for wireless charging the batteries of the electronic device when one side surface of the foldable-screen electronic device is proximal to the wireless charging device, thereby improving charging efficiency and shortening charging time. User experience can be improved as the users do not need to select a specified side surface for charging.

A wireless charging method includes: acquiring a charging type supported by a wireless charging device after handshake communication with the wireless charging device; and selecting a first receiving assembly and/or a second receiving assembly to charge batteries of a foldable-screen electronic device based on the charging type. By arranging the first receiving assembly and the second receiving assembly on the foldable-screen electronic device, at least one of the receiving assemblies can be selected for wireless charging the batteries of the electronic device when one side surface of the foldable-screen electronic device is proximal to the wireless charging device, thereby improving charging efficiency and shortening charging time. User experience can be improved as the users do not need to select a specified side surface for charging.

Disclosed herein are a number of embodiments for wireless and non-conductive transfers of power and data to electronic devices. These technological advances can be implemented in retail security products (e.g., merchandising display positions for devices such as smart phones, tablet computers, wearables (e.g., smart watches), digital cameras, etc.) as well as docking systems for tablet computers.

An antenna for wireless power transfer includes a first antenna terminal, a second antenna terminal, at least one inner turn, the at least one inner turn having an inner turn width, and at least one outer turn, the at least one outer turn having an outer turn width, the outer turn width greater than the inner turn width. The antenna further includes a substrate positioned underneath the at least one inner turn and the at least one outer turn and a plurality of separate panes of a magnetic shielding material. Each of the plurality of separate panes are positioned substantially co-planar, with respect to each other, and positioned between the substrate and both the at least one inner turns and the at least one outer turns.

An antenna for wireless power transfer includes a first antenna terminal, a second antenna terminal, at least one inner turn, the at least one inner turn having an inner turn width, and at least one outer turn, the at least one outer turn having an outer turn width, the outer turn width greater than the inner turn width. The antenna further includes a substrate positioned underneath the at least one inner turn and the at least one outer turn and a plurality of separate panes of a magnetic shielding material. Each of the plurality of separate panes are positioned substantially co-planar, with respect to each other, and positioned between the substrate and both the at least one inner turns and the at least one outer turns.

Submitted is an abnormality detection device including a processing unit, and a communication unit that can communicate with a ground electric power supply device that transmits electric power to a vehicle in a non-contact manner. The processing unit is configured to detect electricity theft or electricity leakage in the ground electric power supply device, based on a time dependent change pattern of an electric power supply amount of the ground electric power supply device or a parameter that is correlated to the electric power supply amount, the time dependent change pattern being a time dependent change mode.

A wireless power transfer facility includes: a power factor correction device that converts AC front-stage input power received from a commercial power source into DC front-stage output power and has a plurality of output terminals for outputting the front-stage output power; a plurality of inverters that are respectively connected to the output terminals of the power factor correction device and convert DC rear-stage input power including the DC front-stage output power received from the output terminals into AC rear-stage output power; a plurality of power transmission coils that are respectively connected to the plurality of inverters and receive the rear-stage output power; and a control device that performs control so that the front-stage input power output to the power factor correction device does not exceed allowable power of the commercial power source.

A wireless power transfer facility includes: a power factor correction device that converts AC front-stage input power received from a commercial power source into DC front-stage output power and has a plurality of output terminals for outputting the front-stage output power; a plurality of inverters that are respectively connected to the output terminals of the power factor correction device and convert DC rear-stage input power including the DC front-stage output power received from the output terminals into AC rear-stage output power; a plurality of power transmission coils that are respectively connected to the plurality of inverters and receive the rear-stage output power; and a control device that performs control so that the front-stage input power output to the power factor correction device does not exceed allowable power of the commercial power source.

A server includes: a communicator configured to communicate with a plurality of ground power supply devices configured to transmit electric power to a vehicle in a non-contact manner; a storage configured to store at least information on a total power supply amount within a predetermined period of the ground power supply devices; and one or more processors configured to, when a total power supply amount within a predetermined period of one ground power supply device among the ground power supply devices is equal to or greater than a determination threshold value set based on data of the total power supply amount within the predetermined period of the ground power supply devices, determine that stealing or leakage of electricity has occurred in the one ground power supply device.