Lg Innotek Co., Ltd.

Dong Ho Yong

Su Ho Bae

Jong Heon Lee

Do Hyun Won

A wireless power transmission apparatus can include a coil unit including a first layer including a first wireless power transmission coil having an asymmetric shape, and a second layer including a second wireless power transmission coil having an asymmetric shape, the first and second wireless power transmission coils being connected in parallel and partially overlapping with each other; and first and second terminals configured to simultaneously apply current to the first and second wireless power transmission coils connected in parallel, in which the first wireless power transmission coil and the second wireless power transmission coil have line symmetry with respect to an imaginary line extending between the first and second terminals and between the first and second layers.

Wireless power transmission apparatus

A wireless power receiver for transferring a power received from a wireless power transmitter to a load, the wireless power receiver including a receiving coil configured to receive an AC power from the wireless power transmitter, a rectifier configured to rectify the AC power into a DC power and a controller configured to monitor a DC voltage at an output of the rectifier, in which the wireless power receiver transceives information with the wireless power transmitter through an in-band communication, and the controller creates a control signal to adjust the AC power received from the wireless power transmitter and continuously is configured to charge the load when a charging state is changed.

Charging control device, charging control method and wireless power receiving device equipped with same

A wireless power transmission apparatus can include a member; an upper transmission coil disposed on the member; and first and second terminals disposed in the member, in which the upper transmission coil includes an outer coil part connected to the first terminal and formed in one-turn; a first inner coil part connected to the outer coil part and having a half-turn on a first region of the member; a second inner coil part connected to the first inner coil part and having a half-turn on a second region of the member; a third inner coil part connected to the second inner coil part and having a half-turn on the first region of the member; and a fourth inner coil part connected to the third inner coil part and the second terminal and having a half-turn on the second region of the member, in which the half-turn of the second inner coil part comprises a first rounded corner, a second rounded corner and a third rounded corner, a circular arc of the first rounded corner of the second inner coil part is R 20 mm as a radius of a circle, a circular arc of the second rounded corner of the second inner coil part is R 18.4 mm as a radius of a circle, and a circular arc of the third rounded corner of the second inner coil part is greater than the circular arc of the first and second rounded corners of the second inner coil part.

A charging control device includes a capacitor, a comparison unit and a switching unit. The capacitor is charged with a voltage converted from power received from a wireless power sending device. The comparison unit compares the voltage of the capacitor with a reference voltage, and generates an output signal according to the result of the comparison. The switching unit is connected to the front end of the capacitor and is switched by the output signal from the comparison unit so as to control whether to supply the converted voltage to a load terminal.

A wireless power transmission apparatus is described that comprises a mounting member, an upper transmission coil disposed on the mounting member, and first and second terminals disposed in the mounting member. The upper transmission coil comprises an outer coil part connected to the first terminal and formed in one-turn with respect to a central axis between the first and second terminals, a first inner coil part connected to the outer coil part and formed in a half-turn on a first side of the central axis, a second inner coil part connected to the first inner coil part, formed in a half-turn on a second side of the central axis, a third inner coil part connected to the second inner coil part, formed in a half-turn on the first side of the central axis, and a fourth inner coil part connected to the third inner coil part and the second terminal, formed in a half-turn on the second side of the central axis.

Disclosed is a wireless power transmission apparatus. The wireless power transmission apparatus includes a mounting member, an upper transmission coil on the mounting member, a lower transmission coil under the mounting member, a first terminal connected with an outer connection part of the upper transmission coil and an inner connection part of the lower transmission coil, and a second terminal connected with an inner connection part of the upper transmission coil and an outer connection part of the lower transmission coil. The upper transmission coil and the lower transmission coil are bilaterally symmetrical to each other about a central axis between the first and second terminals.

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Seoul, South Korea

Dong Ho Yong