A headset capable of wireless charging is provided. The headset capable of wireless charging according to one embodiment of the present invention comprises: a pair of body units including a housing equipped with a speaker and a cushion unit; a connecting unit configured to connect the pair of body units; a battery module embedded in at least one of the body units and connecting unit to provide driving power; and a wireless power receiving antenna configured to receive wireless power transmitted from the outside to supply power for charging the battery module.

A wireless electrical energy transmission system is provided. The system comprises a wireless transmission base configured to wirelessly transmit electrical energy or data via near field magnetic coupling to a receiving antenna configured within an electronic device. The wireless electrical energy transmission system is configured with at least one transmitting antenna and a transmitting electrical circuit positioned within the transmission base. The transmission base is configured so that at least one electronic device can be wirelessly electrically charged or powered by positioning the at least one device external and adjacent to the transmission base.

A wireless electrical energy transmission system is provided. The system comprises a wireless transmission base configured to wirelessly transmit electrical energy or data via near field magnetic coupling to a receiving antenna configured within an electronic device. The wireless electrical energy transmission system is configured with at least one transmitting antenna and a transmitting electrical circuit positioned within the transmission base. The transmission base is configured so that at least one electronic device can be wirelessly electrically charged or powered by positioning the at least one device external and adjacent to the transmission base.

A coil according to one embodiment of the present invention is a coil in which a first electric wire on an inner peripheral side and a second electric wire on an outer peripheral side are wound side by side to connect ends of the electric wires with each other, and the coil includes a first region where the first electric wire abuts on the second electric wire of another adjacent turn and separates from the second electric wire of a same turn.

A wireless device having electromagnetic shielding for a coil includes a composite magnetic sheet. The composite magnetic sheet includes first and second magnetic sheet parts. The first magnetic sheet part has a stacked structure of magnetic sheets including a surface which is an outermost surface of the first magnetic sheet part. The second magnetic sheet part is disposed on the outermost surface of the first magnetic sheet part. At least one magnetic sheet of the first magnetic sheet part includes a cracked structure and the second magnetic sheet part does not include a cracked structure. A protective member is disposed above the composite magnetic sheet. A coil is disposed below the composite magnetic sheet. A magnetic sheet of the first magnetic sheet part with a cracked structure has a surface roughness or porosity greater than that of the second magnetic sheet part without a cracked structure.

A wireless charging system for charging batteries (112) in a medical environment is provided. The wireless charging system may include a power transmitter and a power receiver. The power transmitter produces a strong near-distance magnetic field and transmits the magnetic field via a transmitting antenna to a power receiver. The power receiver may receive the transmitted magnetic field via a power receiver antenna. The converted electrical power may charge multiple rechargeable batteries (112) simultaneously with high efficiency.

A wireless charging system having a power transmitter may wirelessly transfer power to a power receiver. Shield saturation, such as saturation of a ferrite structure, in the wireless power receiver may occur under some operating conditions. Saturation can lead to disruptive oscillations in power transfer. The power transmitting may include control circuitry for detecting and mitigating saturation.

Embodiments describe a portable electronic device that includes a housing having an interface surface and an inductor coil disposed within the housing and comprising a conductive wire wound in a plurality of turns about a center point and in increasing radii such that the inductor coil is substantially planar. The portable electronic device further includes charging circuitry coupled to the inductor coil and configured to operate the inductor coil to wirelessly receive power and wirelessly transmit power, control circuitry coupled to the charging circuitry and configured to instruct the charging circuitry to operate the inductor coil to wirelessly receive power and to wirelessly transmit power, and a device detection coil coupled to the control circuitry and configured to detect the presence of an external device on the charging surface, the device detection coil is configured to operate at a different frequency from the inductor coil.

A wireless charging system having a power transmitter may wirelessly transfer power to a power receiver. Shield saturation, such as saturation of a ferrite structure, in the wireless power receiver may occur under some operating conditions. Saturation can lead to disruptive oscillations in power transfer. The power transmitting may include control circuitry for detecting and mitigating saturation.

A surface mount inductor includes a coil buried in a composite material including a magnetic powder; outer terminals connected to the coil; and a molded body having a metal surface that intersects a winding axis of the coil and including the composite material. A surface mount inductor manufacturing method includes arranging, inside a mold, a metal plate having a shape covering part of a surface of a molded body; arranging a coil and a composite material including a magnetic powder or a preliminary molded body composed of the composite material inside the mold in which the metal plate has been arranged; and forming a molded body in which the coil is buried and that has the metal plate arranged on part of a surface of the molded body by molding the metal plate, the composite material, and the coil inside the mold to be integrated with each other.