The present disclosure provides the structure of a transmission and reception unit in a wireless charging system. To this end, according to an embodiment, there is provided a wireless power receiver configured to receive a wireless power signal from a wireless power transmitter to receive wireless power, and the wireless power receiver may include a receiving coil unit comprising a primary coil and a secondary coil receiving the wireless power signal; and a charger configured to charge power which is a sum of wireless power received by the primary coil and the secondary coil, respectively, based on the wireless power signal.

Structure of transmission and reception unit in wireless charging system

A wireless power transmitter according to an embodiment includes a coil and a capacitor which resonate with a wireless power receiver. The coil includes a plurality of cell groups and a core which connects the cell groups with each other. Each of the cell groups includes a plurality of cells. Each of the cells is configured such that magnetic field generated by currents flowing through the cells are formed in a same direction. Each of the cell groups is adjacent to at least one cell group. Each of the cell groups and the core are configured as one conductive wire.

Wireless power transmitter

There is disclosed a mobile terminal including a first case comprising a battery loading portion, a battery loaded in the battery loading portion, a second case coupled to the first case and configured to cover the battery, a coil antenna module arranged between the second case and the battery, and a controller electrically connected to the coil antenna module and configured to transmit and receive a signal or receive an electric power, wherein the coil antenna module includes an insulating sheet, a first coil arranged in a surface of the insulating sheet, a second coil arranged in the first coil, a third coil arranged in the second coil, and a magnetic sheet disposed on the surface of the insulating sheet, and ends of the first, second and third coils are arranged in the surface of the insulating sheet or dividedly arranged in both surfaces of the insulating sheet. The mobile terminal may realize the coil antenna module including a plurality of coils configured to perform diverse manners of wireless communication in a limited area.

Mobile terminal and coil antenna module

The present disclosure relates to a wireless power transmission and reception method, a wireless power transmission and reception apparatus, and a wireless charging system in a wireless power transmission and reception field, and the method may include sensing whether or not there exists a wireless power receiver within a range capable of transmitting power in a wireless manner, sending a detection signal to the wireless power receiver, allowing the wireless power receiver to receive at least one of an identification packet and a setting packet transmitted in a first mode, determining whether or not to perform communication in either one of the first mode and a second mode different from the first mode based on the setting packet, and transmitting power to the wireless power receiver while performing communication in the determined either one mode, wherein the setting packet comprises an operation mode indicating a communication execution mode of the wireless power receiver.

Wireless power transfer and receive method, apparatus and system

In a multiple interface, low power and lossy network comprising a plurality of nodes, a low transmission power and medium transmission power topology are defined for the network and a channel-hopping schedule is defined for the devices operating in each topology. A sender determines that data is capable of being transmitted via a link on the low transmission power topology. The sender determines the transmission parameters for the transmission of the data over the link on the low transmission power topology and determines a low transmission power channel for transmission of the data. The sender transmits the determined channel and the transmission parameters to the receiver. The sender transmits the data via the determined channel in the low transmission power topology.

Multiple topology routing architecture in computer networks

A wireless power transfer method for a wireless power transfer apparatus using full and half-bridge inverter topologies includes detecting whether or not a wireless power receiver (200) is present within a range of power being transferrable in a wireless manner, transmitting a detection signal to the wireless power receiver (200), receiving at least one of identification information and setting information from the wireless power receiver (200), receiving a control error packet from the wireless power receiver (200), and controlling an amount of power to be transferred by using the combination of a driving frequency, a duty cycle or a power signal phase to the full or half-bridge inverter.

Wireless power transfer method, apparatus and system

The present invention relates to a wireless power transmitter. A wireless power transmitter, according to an embodiment of the present invention, comprises: a coil unit having a plurality of coils that partially overlap with each other; a coil combination generation unit for generating a coil combination so as to include at least one coil among the plurality of coils; and a control unit for transmitting a coil selection signal through the coil combination and selecting an operating coil combination from the coil combination on the basis of a response strength of a response signal to the coil selection signal and the charging efficiency of a wireless power receiver. Accordingly, a highly efficient charging area can be expanded in multiple coils that partially overlap with each other.

A wireless power transmitter is disclosed. The wireless power transmitter, which is capable of charging a plurality of wireless power receivers, includes: a plurality of coil cells; a main half-bridge inverter to which a main pulse signal is applied; a plurality of sub half-bridge inverters to which a first sub pulse signal or second sub pulse signal is applied; a current sensor that monitors the current through the coil cells; and a communications and control unit that controls the pulse signals applied to the main half-bridge inverter and sub half-bridge inverters and that communicates with the wireless power receivers, wherein the sub half-bridge inverters may be respectively connected to the coil cells.

Wireless power transmitter and wireless power transmission method

According to an embodiment of present invention, a wireless power transmitter for a vehicle that transfers power to a wireless power receiver includes: a coil assembly comprising first and second bottom coils placed adjacent to each other in a line and each consisting of a single layer of 11 turns and a top coil stacked on the first and second bottom coils and consisting of a single layer of 12 turns; and a full-bridge inverter driving each of the coils included in the coil assembly individually, wherein the first and second bottom coils and the top coil have a substantially rectangular frame structure with a through hole in the center, the top coil lies on a plane surface in the middle between the first and second bottom coils, and a distance from the center of the first and second bottom coils to the center of the top coil is set to a range of 23 mm to 25 mm.

Wireless power transmitter and receiver for vehicle

A wireless power transfer method for a wireless power transfer apparatus using full and half-bridge inverter topologies includes detecting whether or not a wireless power receiver is present within a range of power being transferrable in a wireless manner, transmitting a detection signal to the wireless power receiver, receiving at least one of identification information and setting information from the wireless power receiver, receiving a control error packet from the wireless power receiver, and controlling an amount of power to be transferred by using the combination of a driving frequency, a duty cycle or a power signal phase to the full or half-bridge inverter.

Lee Jihyun

Papers

Wireless power transfer method, apparatus and system

Wireless power transmitter

Wireless power transmitter and wireless power transmission method

Wireless power transmitter and receiver for vehicle

Wireless power transfer method, apparatus and system for low and medium power