Korea Electrotechnology Research Institute

Jong Ryul Yang

Young Jin Park

Jin Wook Kim

Kwan Ho Kim

Do Hyun Kim

The present invention relates to a transmitting device for wireless power transmission, which includes: a bowl-shaped transmitting device body; and a transmitting coil unit for wirelessly transmitting power to a receiving device based on power supplied from a power source. The transmitting coil unit may include a multi-loop coil unit wound in the bottom surface of the transmitting device body, and a helical coil unit wound around the side wall of the transmitting device body, the helical coil unit being wound to increase the radius of a coil loop in a direction to the upper part of the transmitting device body, and being extended from the end of the multi-loop coil unit.

Apparatus for wireless power transfer, apparatus for wireless power reception and coil structure

The present invention relates to a near-field wireless power transfer system capable of having a constant efficiency regardless of a charging position of a receiver by only using a simple impedance matching circuit without using a separate existing complex adaptive impedance matching circuit or a control circuit, and simultaneously transmitting power without having difficulty with impedance matching even for wireless power transmission to a plurality of electronic devices by applying a structure having a uniform mutual inductance between a wireless power transmitter and a wireless power receiver.

Wireless power transmission system for free-position wireless charging of multiple devices

The present invention relates to a near-field wireless power transfer system capable of having a constant efficiency regardless of a charging position of a receiver by only using a simple impedance matching circuit without using a separate existing complex adaptive impedance matching circuit or control circuit, and simultaneously transmitting power without having difficulty with impedance matching even for wireless power transmission to a plurality of electronic devices by applying a wireless power transmitter with a transmitting coil having a structure to generate a uniform mutual inductance between the transmitting coil of the wireless power transmitter and a receiver coil of each of the plurality of electronic devices.

Growing community of inventors

Gwacheon, South Korea

Jong Ryul Yang