A shielded inductor and a method of making a shielded inductor are provided. The shielded inductor includes a core body surrounding a conductive coil, leads in electrical communication with the coil, and a shield covering at least parts of the outer surface of the core body. An insulating material may be provided between parts of the core body and parts of the shield. A method of making a shielded inductor is also provided.

A wireless charging device is proposed. The wireless charging device may maximize charging efficiency improvement and heat generation reduction effect by appropriately arranging a second magnetic body on a first magnetic body, resulting in an offset of a magnetic flux linkage occurring inside an aluminum shield due to a magnetic field having passed through the first magnetic body.

Various embodiments of inductor coils, antennas, and transmission bases configured for wireless electrical energy transmission are provided. These embodiments are configured to wirelessly transmit or receive electrical energy or data via near field magnetic coupling. The embodiments of inductor coils comprise a figure eight configuration that improve efficiency of wireless transmission efficiency. The embodiments of the transmission base are 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 in contact with or adjacent to the transmission base.

A coil component includes a body, a coil part including a coil pattern and embedded in the body, an external electrode disposed on an external surface of the body and electrically connected to the coil part, a shielding layer disposed on the external surface of the body, and a ceramic insulating layer disposed on a surface of the shielding layer.

An electrically conductive material configured having at least one opening of various unlimited geometries extending through its thickness is provided. The opening is designed to modify eddy currents that form within the surface of the material from interaction with magnetic fields that allow for wireless energy transfer therethrough. The opening may be configured as a cut-out, a slit or combination thereof that extends through the thickness of the electrically conductive material. The electrically conductive material is configured with the cut-out and/or slit pattern positioned adjacent to an antenna configured to receive or transmit electrical energy wirelessly through near-field magnetic coupling (NFMC). A magnetic field shielding material, such as a ferrite, may also be positioned adjacent to the antenna. Such magnetic shielding materials may be used to strategically block eddy currents from electrical components and circuitry located within a device.

A coil component includes: a body having a first surface and a second surface opposing each other in one direction and including a core extending in the one direction; a coil portion embedded in the body and having at least one turn around the core; and an external electrode disposed at least on the first surface of the body and connected to the coil portion. A first distance from the coil portion to a third surface of the body is greater than a second distance from the coil portion to a fourth surface of the body. The third and fourth surfaces oppose each other and have the core disposed therebetween. Turns of the coil portion disposed between the third surface of the body and the core are more than those of the coil portion disposed between the fourth of the body and the core.

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 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 plurality of magnetic shields are arranged to be aligned in an axial direction with a gap there between. Each of a plurality of magnetic shields is formed with a plurality of electromagnetic steel plates stacked in a direction vertical to each of the axial direction and a normal direction to a shield support surface. The shortest spacing distance between each of a plurality of magnetic shields and a support is twice or more the length of the gap between magnetic shields adjacent to each other in a plurality of magnetic shields.

Various embodiments of inductor coils, antennas, and transmission bases configured for wireless electrical energy transmission are provided. These embodiments are configured to wirelessly transmit or receive electrical energy or data via near field magnetic coupling. The embodiments of inductor coils comprise a figure eight configuration that improve efficiency of wireless transmission efficiency. The embodiments of the transmission base are 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 in contact with or adjacent to the transmission base.