Patent application number | Description | Published |
20110081594 | POLYMER MEMBRANE FOR BATTERY, METHOD OF PREPARING SAME AND BATTERY INCLUDING SAME - Disclosed is a polymer membrane for a battery including a porous support including a fiber including a core including a high melting-point polymer; and a sheath including a low melting-point polymer surrounding the core, and a method of preparing the same. The polymer membrane for a battery may further include a proton conductive polymer. | 04-07-2011 |
20120153903 | PROTECTOR OF RECTIFIER AND WIRELESS POWER RECEIVER INCLUDING PROTECTOR - A protector that protects a rectifier, and a wireless power receiver including the protector are provided. In one embodiment, a protector for an electronic device may include: a switch configured to control current flow to a rectifier of the electronic device; and a switch controller configured to: compare, with a predetermined threshold value, a voltage difference between an output voltage of the rectifier and a voltage of the electronic device; and transmit a control signal to the switch (i) to discontinue current flow to the rectifier when the voltage difference is greater than the predetermined threshold value, and (ii) to enable current flow to rectifier when the voltage difference is less than or equal to the predetermined threshold value. | 06-21-2012 |
20120155133 | DIRECT CURRENT/ DIRECT CURRENT CONVERTER FOR REDUCING SWITCHING LOSS, WIRELESS POWER RECEIVER INCLUDING DIRECT CURRENT/ DIRECT CURRENT CONVERTER - Provided are a direct current/direct current (DC/DC) converter and a wireless power receiver including the DC/DC converter. In one embodiment, a direct current-direct current (DC/DC) converter for use in a wireless power receiver, the DC/DC converter may include: a voltage converting unit configured to convert, DC voltage, to a predetermined DC voltage; a turn-on switch configured to control current flow of the DC voltage through the voltage converting unit; and a switching controller configured to: detect an amount of current of the voltage converting unit based on a first turn-on period of the turn-on switch, set a second turn-on period of the turn-on switch based on the detected amount of current, and control the turn-on switch based on the second turn-on period. | 06-21-2012 |
20120193996 | APPARATUS AND METHOD FOR WIRELESS POWER TRANSMISSION - A source resonator for wirelessly transmitting power to a target device may include a magnetic field distribution adjusting unit that is configured to adjust the magnetic field generated by the source resonator. In one or more embodiments, the magnetic field distribution adjusting unit may adjust the magnetic field to be substantially uniform in a predetermined vicinity of the source resonator. For example, the magnetic field distribution adjusting unit may adjust the intensity of the magnetic field near the center of the source resonator to be substantially the same as the intensity of the magnetic field near an edge area of the source resonator. | 08-02-2012 |
20120202435 | METHOD AND APPARATUS FOR CONTROLLING WIRELESS POWER TRANSMISSION AND RECEPTION, AND WIRELESS POWER TRANSMISSION SYSTEM - Provided are a transmission system and a wireless power transmission and reception controlling method. According to an embodiment, a wireless power receiver may include: a target communication unit configured to receive, from a wireless power transmitter, a wake-up request signal and synchronization information with respect to wireless power transmission, and to transmit a response signal with respect to the wake-up request signal to the wireless power transmitter; a load path switch configured to activate based on timing information included in the synchronization information; and a target resonator configured to receive wireless power from a source resonator of the wireless power transmitter, when the load path switch is activated. | 08-09-2012 |
20120235507 | APPARATUS AND METHOD FOR HIGH EFFICIENCY VARIABLE POWER TRANSMISSION - A high efficiency variable power transmitting apparatus outputs a variable power by modulating, with respect to a time axis, a high frequency signal having a constant amplitude by turning the high frequency signal ON and OFF, amplifying the variable power to satisfy a requested power level of a target device based on a supply voltage having a predetermined level, converting an alternating current (AC) voltage received from a power source to a direct current (DC) voltage, generating the supply voltage having the predetermined level based on the DC voltage, and providing the supply voltage having the predetermined level to the PA. | 09-20-2012 |
20120286581 | APPARATUS AND METHOD FOR WIRELESS POWER TRANSMISSION - An apparatus and method for controlling a magnetic field when power is wirelessly transmitted are provided. According to one general aspect, a wireless power transmitter may include: a source resonator configured to wirelessly transmit power to a target device including at least one sub-resonator located there within; and a magnetic field distribution controller configured to control the distribution of the magnetic field within the resonator based the resonance frequency of the at least one sub-resonator and the resonance frequency of the source resonator. | 11-15-2012 |
20120293005 | APPARATUS AND METHOD FOR WIRELESS POWER TRANSMISSION - An apparatus and method for efficiently, wirelessly transmitting a power to a plurality of target devices are provided. A wireless power transmitter may include: a source resonator configured to wirelessly transmit energy to a target device with at least one target resonator, the energy being stored in a capacitor; and a feeding unit configured to generate an induced current flowing in the source resonator in the same direction as a direction of an input current flowing in a transmission line, the feeding unit being electrically connected to the capacitor and forming a closed loop with the source resonator. | 11-22-2012 |
20120293006 | APPARATUS AND METHOD FOR USING NEAR FIELD COMMUNICATION AND WIRELESS POWER TRANSMISSION - An apparatus and method of using near field communication (NFC) and wireless power transmission (WPT) are provided. A power receiving apparatus includes a resonator configured to receive a power and to output the power. The power receiving apparatus further includes a near field communication (NFC) receiver configured to perform wireless communication using the power output by the resonator. The power receiving apparatus further includes a wireless power transmission (WPT) receiver configured to supply a voltage using the power output by the resonator. The power receiving apparatus further includes a connecting unit configured to selectively connect the resonator to either the NFC receiver or the WPT receiver. The power receiving apparatus further includes a mode selector configured to control the connecting unit to selectively connect the resonator to either the NFC receiver or the WPT receiver based on the power output by the resonator. | 11-22-2012 |
20120293009 | APPARATUS AND METHOD OF PROTECTING POWER RECEIVER OF WIRELESS POWER TRANSMISSION SYSTEM - An apparatus and method of protecting a power receiver of a wireless power transmission system are provided. A wireless power receiver includes a rectifier comprising an input and an output, and configured to receive a signal through the input, to rectify the signal to produce a rectified signal, and to output the rectified signal through the output, and a capacitor connected to the output of the rectifier and to ground. The wireless power receiver further includes a direct current-to-direct current (DC/DC) converter connected to the output of the rectifier and to a load, and configured to convert the rectified signal to a power, and to provide the power to the load, and a device configured to create a short circuit to protect the rectifier and/or the capacitor when a voltage greater than a threshold voltage is applied to the input of the rectifier and/or the output of the rectifier. | 11-22-2012 |
20120293900 | APPARATUS FOR AND METHOD OF PROTECTING WIRELESS-COUPLED POWER DEVICES FROM OVERVOLTAGE, OVERCURRENT, AND OVERTEMPERATURE USING HYSTERESIS - An overvoltage protecting unit and an overcurrent protecting unit protect a power device from an overvoltage and an overcurrent using a comparator having hysteresis. An overtemperature protecting unit protects the power device from an overtemperature using a thermistor having a resistance that changes as a temperature of the thermistor changes. | 11-22-2012 |
20120294054 | METHOD AND APPARATUS FOR WIRELESS POWER TRANSMISSION USING POWER RECEIVER - A rectifier is provided. The rectifier includes a first rectification unit having an anode connecting to a negative radio frequency (RF) port and a cathode connecting to a positive direct current (DC) port, a second rectification unit having an anode connecting to a positive RF port and a cathode connecting to the positive DC port, a third rectification unit having an anode connecting to a ground and a cathode connecting to the negative RF port, and a fourth rectification unit having an anode connecting to the ground and a cathode connecting to the positive RF port. The first rectification unit includes a plurality of first diodes that are connected in parallel, and the second rectification unit includes a plurality of second diodes that are connected in parallel. | 11-22-2012 |
20120299390 | ELECTRONIC DEVICE AND METHOD FOR TRANSMITTING AND RECEIVING WIRELESS POWER - An electronic device and method for transmitting and receiving a wireless power are provided. An electronic device for transmitting and receiving wireless power may include a resonator configured to operate, based on a plurality of operating modes of the electronic device including a power reception mode, a relay mode, and a power transmission mode, wherein: (i) in the power reception mode, the resonator is configured to receive power from a wireless power transmitter, (ii) in the relay mode, the resonator is configured to relay power received from the wireless power transmitter to a wireless power receiver, and (iii) in the power transmission mode, the resonator is configured to transmit power to the wireless power receiver; and a path controller configured to control at least one electrical pathway of electronic device based on the operating mode. | 11-29-2012 |
20120300875 | APPARATUS FOR AND METHOD OF TRANSMITTING HIGH EFFICIENCY VARIABLE POWER - An apparatus for transmitting a high efficiency variable power includes a pulse generating unit configured to generate a pulse signal comprising a pulse having a duration corresponding to an amount of power transmitted; a pulse stream generating unit configured to convert the pulse signal to a pulse stream having pulse shape corresponding to the duration of the pulse and data to be transmitted; and a high frequency modulating unit configured to output a variable power by modulating a high frequency signal having a constant amplitude on a time axis by repeatedly outputting and not outputting the high frequency signal based on the pulse stream. | 11-29-2012 |
20120306269 | METHOD AND APPARATUS FOR DETECTING LOAD FLUCTUATION OF WIRELESS POWER TRANSMISSION - A method and apparatus to detect load fluctuation of a wireless power transmission are provided. A wireless power transmitter includes a resonator configured to wirelessly transmit, to a target device, an output power. The wireless power transmitter further includes a power detector configured to detect a current of the output power. The wireless power transmitter further includes a controller configured to detect a change in the current, and to detect a target load based on the change in the current. The target load includes a load of which the output power is applied thereto. | 12-06-2012 |
20120306283 | APPARATUS AND METHOD OF DIVIDING WIRELESS POWER IN WIRELESS RESONANT POWER TRANSMISSION SYSTEM - Provided are methods and apparatuses for distributing wireless power in a wireless power transmission system. According to a general aspect, a source device that distributes a wireless power in a wireless power transmission system may include: a matching circuit searching unit configured to determine information associated with a matching circuit of a source device based on one or more target devices and the amount of power to be distributed to the one or more of the target devices; and a matching circuit modifying unit configured to modify the shape of the matching circuit of the source device to correspond to the determined information associated with the matching circuit of the source device. | 12-06-2012 |
20120306433 | WIRELESS POWER TRANSMISSION AND CHARGING SYSTEM, AND POWER CONTROL METHOD OF WIRELESS POWER TRANSMISSION AND CHARGING SYSTEM - A wireless power transmission and charging system, and a power control method of the wireless power transmission and charging system are provided. The power control method may include generating charging power using the power amplifier. The charging power may be used to charge a target device. The charging power may be transmitted to the target device. The voltage supplied to the power amplifier may be adjusted based on a detected change in the current input to the power amplifier, a detected change in the temperature of the source device, a detected change in the amount of the power received to the target device, or a detected change in the temperature of the target device. | 12-06-2012 |
20120309304 | APPARATUS AND METHOD FOR COMMUNICATION USING WIRELESS POWER - An apparatus and method for communication using a wireless power are provided. The apparatus includes an amplifier configured to amplify an input signal based on a power supplied to the amplifier. The apparatus further includes a control unit configured to detect a change in an impedance of a target device, and to change the power based on the change in the impedance. The apparatus further includes a demodulation unit configured to receive a message from the target device, and to demodulate the message based on the changed power. | 12-06-2012 |
20120309305 | APPARATUS AND METHOD FOR COMMUNICATION USING WIRELESS POWER - An apparatus and method are described that may enable a target device to communicate with a source device using a wireless power. The communication apparatus receives a wireless power from a source resonator through a magnetic coupling between the source resonator and a target resonator. The communication apparatus transmits a message, and modulates the message based on the received wireless power and impedance mismatch between the source device and the target device. The communication apparatus controls the impedance mismatch by changing an impedance of the target device. | 12-06-2012 |
20130062963 | WIRELESS ELECTROMAGNETIC RECEIVER AND WIRELESS POWER TRANSFER SYSTEM - A system and a device for wirelessly transferring power without a cable are provided. A wireless electromagnetic receiver includes a first device configured to be magnetized based on an electromagnetic field. The wireless electromagnetic receiver further includes a second device configured to transform the magnetization of the first device into a power, the second device being not in contact with the first device. | 03-14-2013 |
20130062964 | WIRELESS ELECTROMAGNETIC RECEIVER AND WIRELESS POWER TRANSFER SYSTEM - A system and a device for wirelessly transferring power without a cable are provided. A wireless electromagnetic receiver includes a first device configured to oscillate based on an electromagnetic field. The wireless electromagnetic receiver further includes a second device configured to transform the oscillation of the first device into a power, the second device being in contact with the first device. | 03-14-2013 |
20130062965 | WIRELESS ELECTROMAGNETIC RECEIVER AND WIRELESS POWER TRANSFER SYSTEM - A system and a device for wirelessly transferring power without a cable are provided. A wireless electromagnetic receiver includes a first device configured to oscillate based on an electromagnetic field. The wireless electromagnetic receiver further includes a second device configured to transform the oscillation of the first device into a power, the second device being in contact with the first device, and the second device including a precharged capacitor. | 03-14-2013 |
20130101133 | SOUND SYSTEM USING WIRELESS POWER TRANSMISSION - A sound system using wireless power transmission is provided. A power and data transmission apparatus in the sound system, includes a data transmitting unit configured to wirelessly transmit, to a sound output device, sound data. The apparatus further includes a power transmitting unit configured to wirelessly transmit, to the sound output device, power. The apparatus further includes a controller configured to control the data transmitting unit and the power transmitting unit based on a distance between the apparatus and the sound output device. | 04-25-2013 |
20130113296 | WIRELESS POWER TRANSMISSION SYSTEM, RESONATOR IN WIRELESS POWER TRANSMISSION SYSTEM, AND RESONATOR DESIGN METHOD FOR OPTIMUM POWER DIVISION - A wireless power transmission system, a resonator in the wireless power transmission system, and a resonator design method for optimum power division are provided. A power receiver of the wireless power transmission system, includes a resonator configured to receive a power from a power transmitter. The power receiver further includes a power supply configured to supply the received power to a load. A figure of merit (FOM) of the resonator corresponds to a power dividing ratio of the power transmitter. | 05-09-2013 |
20130113298 | WIRELESS POWER TRANSMISSION SYSTEM AND METHOD BASED ON IMPEDANCE MATCHING CONDITION - A wireless power transmission system and a method based on an impedance matching condition are provided. A source device of the wireless power transmission system, includes a power converter configured to generate power. The source device further includes a resonator configured to transmit the power to a target device. A ratio of an input impedance of the resonator to an output impedance of the power converter is less than a reference value. | 05-09-2013 |
20130121899 | METHOD FOR ECONOMICAL EXTRACTION OF MAGNESIUM, BORON AND CALCIUM FROM LITHIUM BEARING SOLUTION - The present invention relates to a method of economical extraction of magnesium, boron and calcium, while minimizing the loss of lithium, from a lithium bearing solution. More specifically, the present invention provides a method for economical extraction of magnesium, boron, and calcium, while minimizing the loss of lithium, from a lithium bearing solution comprising the steps of: (a) adding an alkali in the lithium bearing solution to precipitate magnesium hydroxide; (b) absorbing boron ions on the surface of the magnesium hydroxide by adjusting the pH to about 8.5 to about 10.5; and (c) simultaneously extracting magnesium and boron by filtering the magnesium hydroxide absorbed with the boron ions from the lithium bearing solution. | 05-16-2013 |
20130127256 | WIRELESS POWER TRANSMISSION SYSTEM, AND METHOD OF CONTROLLING POWER IN WIRELESS POWER TRANSMISSION SYSTEM BASED ON DETECTION PARAMETER - A wireless power transmission system, and a method of controlling power in the wireless power transmission system based on a detection parameter are provided. The method includes transmitting a request signal to a device. The method further includes receiving, from the device, a response signal corresponding to the request signal, the response signal including a parameter of the device. The method further includes generating an operation power based on the parameter of the device, the operation power being used for an operation of the device. | 05-23-2013 |
20130129586 | METHOD FOR ECONOMICAL EXTRACTION OF LITHIUM FROM SOLUTION INCLUDING LITHIUM - The present invention relates to a method of extracting lithium from a lithium bearing solution. More specifically, the present invention provides a method of economical extraction of lithium from a lithium bearing solution by adding a phosphorous supplying material to the solution to precipitate lithium phosphate from the dissolved lithium. | 05-23-2013 |
20130130621 | METHOD AND APPARATUS FOR DATA COMMUNICATION IN WIRELESS POWER TRANSMISSION - A method and apparatus for data communication in wireless power transmission are provided. A wireless power transmitter includes a resonance antenna configured to wirelessly transmit a power to a wireless power receiver, and receive a signal from the wireless power receiver, the signal including a sub-carrier. The wireless power transmitter further includes a controller configured to receive the signal from the resonance antenna, and receive data from the wireless power receiver based on the sub-carrier. | 05-23-2013 |
20130134791 | WIRELESS POWER TRANSMISSION SYSTEM WITH ENHANCED MAGNETIC FIELD STRENGTH - A wireless power transmission system with an enhanced magnetic field strength is provided. A wireless power transmitter includes a generator configured to generate a power. The wireless power transmitter further includes a resonator configured to generate a magnetic field to transmit the power to a target device. The wireless power transmitter further includes a slab unit configured to enhance the magnetic field. | 05-30-2013 |
20130134793 | WIRELESS POWER TRANSMISSION SYSTEM AND MULTI-MODE RESONATOR IN WIRELESS POWER TRANSMISSION SYSTEM - A wireless power transmission system and a multi-mode resonator in the wireless power transmission system are provided. The multi-mode resonator includes a transmission line portion including unit-cells, the unit-cells including respective ends connected to each other, and each of the unit-cells including a capacitor, an inductor connected in parallel to the capacitor, and a via. The multi-mode resonator further includes a ground conducting portion configured to provide an electrical ground to the transmission line portion through the via of each of the unit-cells. | 05-30-2013 |
20130134927 | WIRELESS POWER TRANSMISSION SYSTEM BASED ON CELL DIVISION - A wireless power transmission system based on cell division is provided. A communication and power control method of the wireless power transmission system, includes setting a magnetic coupling zone. The method further includes detecting a target device in the magnetic coupling zone. The method further includes transmitting a power to the target device. The method further includes adjusting an amount of the power based on a transmission efficiency of the power. | 05-30-2013 |
20130146476 | METHOD OF EXTRACTING LITHIUM WITH HIGH PURITY FROM LITHIUM BEARING SOLUTION BY ELECTROLYSIS - The present invention relates to a method of extracting lithium with high purity from a lithium bearing solution by electrolysis. More specifically, the present invention provides a method of economical extraction of lithium from the lithium bearing solution by adding a phosphorous supplying material to the solution to prepare a lithium phosphate aqueous solution subject to electrolysis. | 06-13-2013 |
20130149227 | METHOD OF PREPARING OLIVINE CATHOD MATERIAL FOR LITHIUM SECONDARY BATTERY - The present invention relates to a method of preparing olivine cathode materials for lithium secondary battery. More specifically, a method of preparing an olivine-based cathode material for secondary battery comprising the steps of: dissolving an iron supplying material, and a lithium phosphate by adding an acid; forming a chelate polymer by adding a chelate agent and a polymerization agent in the solution of the dissolving step followed by heating; pyrolyzing the chelate polymer under reducing atmosphere; and thermally reducing the chelated polymer degraded during the pyrolysis is provided. | 06-13-2013 |
20130187475 | REASONANT APPARATUS FOR WIRELESS POWER TRANSFER - Provided is a bulk acoustic resonator (BAR)-based resonant structure in relation to electric and radio technologies, and more particularly, to a wireless power transmission system. A resonant apparatus for wireless power transmission may include a conducting loop, and a high quality capacitor. The high quality capacitor may include a metacapacitor including a thin piezoelectric layer disposed between two metal electrodes. The metacapacitor may be disposed between two dielectric layers of which central portions are etched, and the conducting loop may be disposed on an upper layer of the two dielectric layers. | 07-25-2013 |
20130249306 | WIRELESS POWER TRANSMISSION SYSTEM AND METHOD FOR INCREASING COUPLING EFFICIENCY BY ADJUSTING RESONANT FREQUENCY - A wireless power transmission system and a method for increasing a coupling efficiency by adjusting a resonant frequency are provided. A device of the wireless power transmission system includes a resonator configured to transmit a wireless power, and a communication unit configured to receive information from another device. The device further includes a controller configured to determine a power transmission efficiency based on the information, and adjust a resonant frequency of the device, a resonant frequency of a relay device, and a resonant frequency of the other device, if the power transmission efficiency is less than or equal to a predetermined reference efficiency. | 09-26-2013 |
20130271222 | APPARATUS AND METHOD FOR BALANCED POWER AMPLIFICATION - An apparatus and a method for balanced power amplification are provided. An amplifier includes a splitter configured to split an input signal into a first input signal and a second input signal that include a 90° phase difference. The amplifier further includes a first power amplifier (PA) configured to amplify the first input signal to generate a first output signal. The amplifier further includes a second PA configured to amplify the second input signal to generate a second output signal. The amplifier further includes a combiner configured to combine the first output signal and the second output signal that include the 90° phase difference to generate an output signal. | 10-17-2013 |
20130300206 | APPARATUS AND METHOD FOR WIRELESSLY RECEIVING POWER, AND APPARATUS AND METHOD FOR WIRELESSLY TRANSMITTING POWER - An apparatus and a method for wirelessly receiving power, and an apparatus and a method for wirelessly transmitting power, are provided. A wireless power receiver includes a receiving unit configured to wirelessly receive a power, and a controller configured to control a length of a clock signal based on the power. The wireless power receiver further includes a modulator configured to change an impedance based on the length of the clock signal to perform load modulation. | 11-14-2013 |
20140015331 | APPARATUS AND METHOD FOR WIRELESS POWER RECEPTION - An apparatus and a method for wireless power reception are provided. A wireless power receiver includes a receiving unit configured to wirelessly receive a power. The wireless power receiver further includes a power consuming unit configured to consume the power, until a voltage applied to a load reaches a predetermined value, so that an amount of a power transferred from the receiving unit to the load is less than or equal to an initial accommodation power amount of the load. | 01-16-2014 |
20140021796 | WIRELESS POWER TRANSMITTER, WIRELESS POWER RELAY APPARATUS, AND WIRELESS POWER RECEIVER - A wireless power transmitter includes a source resonator configured to wirelessly transmit power via magnetic coupling with a target resonator; and an impedance adjusting unit configured to adjust an impedance of the source resonator using a plurality of impedance-matching bars located in the source resonator. | 01-23-2014 |
20140042820 | APPARATUS AND METHOD FOR SHIELDING LEAKAGE MAGNETIC FIELD IN WIRELESS POWER TRANSMISSION SYSTEM - A leakage magnetic field shielding apparatus includes a resonator configured to counterbalance a leakage magnetic field generated when a source resonator and a target resonator resonate at a resonant frequency of the source resonator and the target resonator. | 02-13-2014 |
20140049211 | WIRELESS POWER TRANSMISSION APPARATUS FOR MOBILE DEVICE - A wireless charging apparatus includes a charging unit configured to transmit power wirelessly to a mobile device, and a power supply unit configured to supply power to the charging unit. The wireless charging apparatus further includes a connecting unit configured to connect the charging unit to the power supply unit such that a position and an angle of the charging unit are adjustable. | 02-20-2014 |
20140070624 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING WIRELESS POWER - An apparatus that transmits and receives wireless power, includes a controller configured to determine whether the apparatus is to operate in a power reception mode or a power transmission mode based on a capacity of a battery of the apparatus, and a capacity of a battery of another apparatus. The apparatus further includes a resonator configured to receive power from the other apparatus in response to the apparatus being determined to operate in the power reception mode, and transmit power to the other apparatus in response to the apparatus being determined to operate in the power transmission mode. | 03-13-2014 |
20140077613 | APPARATUS AND METHOD FOR CONTROLLING RESONATOR OF WIRELESS POWER TRANSMISSION SYSTEM - A source device configured to transmit a magnetic field via magnetic resonance with a target device includes a source resonator including a plurality of loop circuits respectively configured to generate different magnetic fields each depending on a length of a corresponding one of the plurality of loop circuits, and a circuit selector configured to select one loop circuit among the plurality of loop circuits based on information associated with the target device. | 03-20-2014 |
20140077614 | APPARATUS AND METHOD FOR WIRELESS POWER RECEPTION, APPARATUS AND METHOD FOR WIRELESS POWER TRANSMISSION, AND WIRELESS POWER TRANSMISSION SYSTEM - An apparatus and a method for receiving power wirelessly, and an apparatus and a method for transmitting power wirelessly are provided. The apparatus for transmitting power wirelessly includes: a source resonator configured to transmit power wirelessly to a target resonator through a mutual resonance with the target resonator; a power supply unit configured to supply power to the source resonator; and a matching unit configured to connect a passive device to the power supply unit in series or in parallel to match an output impedance of the power supply unit and an input impedance of the source resonator. | 03-20-2014 |
20140084858 | WIRELESS POWER TRANSMISSION APPARATUS AND METHOD AND WIRELESS POWER RECEPTION APPARATUS - A wireless power transmission apparatus includes a measurer configured to measure a value of a current flowing in a source resonator, a communication unit configured to receive a value of a charging current of a battery from a wireless power reception apparatus, and a power controller configured to control an amount of power to be transmitted by the source resonator based on either one or both of the value of the current measured by the measurer and the value of the charging current received by the communication unit. The value of the charging current of the battery varies as the battery is charged. | 03-27-2014 |
20140152116 | APPARATUS AND METHOD FOR TRANSCEIVING WIRELESS POWER - An apparatus configured to transceive wireless power, includes a magnetostrictive resonator configured to be excited by a magnetic field, and a soft magnetic material disposed in a vicinity of the magnetostrictive resonator. The apparatus further includes a transducing coil disposed in a vicinity of the magnetostrictive resonator or the soft magnetic material, and configured to convert mechanical energy generated by the excitation of the magnetostrictive resonator to electric energy. | 06-05-2014 |
20140152118 | PLANAR SPIRAL INDUCTION COIL HAVING INCREASED QUALITY (Q)-FACTOR AND METHOD FOR DESIGNING PLANAR SPIRAL INDUCTION COIL - A planar spiral induction coil includes a strip-shaped coil having at least one turn. The at least one turn has a width that changes as a distance from a beginning of the strip-shaped increases in a length direction of the strip-shaped coil. each turn of the at least one turn has a respective width that causes an equal current to flow through each turn of the at least one turn. | 06-05-2014 |
20140152251 | APPARATUS AND METHOD FOR CHARGE CONTROL IN WIRELESS CHARGING SYSTEM - An apparatus and a method for charge control are provided. The apparatus for charge control may include an integrated direct current-to-direct current (DC/DC) converter configured to step up an output voltage level of a load to be greater than or equal to a supply voltage level set in a power amplifier, and the power amplifier configured to convert a direct current (DC) voltage stepped up by the integrated DC/DC converter into an alternating current (AC) voltage based on a resonant frequency, and to amplify the converted AC voltage. The apparatus for charge control may include a rectification unit configured to convert an AC power received wirelessly into a DC power; and a DC/DC converter configured to step down a voltage level of the DC power to a voltage level required by a load in the receiving mode. | 06-05-2014 |
20140152516 | ANTENNA FOR WIRELESS POWER TRANSMISSION AND NEAR FIELD COMMUNICATION - A dual antenna for wireless communication transmission (WPT) and near field communication (NFC) includes a loop antenna, and a dual loop antenna disposed at an inside and an outside of the loop antenna. | 06-05-2014 |
20140183967 | APPARATUS AND METHOD FOR RESONANCE IN WIRELESS POWER TRANSMISSION SYSTEM - A resonant apparatus in a wireless power transmission system, includes a main resonant unit configured to form magnetic resonant coupling between the resonant apparatus and a resonator. The resonant apparatus further includes a field guiding resonant unit configured to focus a magnetic field on an internal portion of the main resonant unit, and a field additive resonant unit configured to adjust a magnitude of a magnetic field formed between the main resonant unit and the field guiding resonant unit. | 07-03-2014 |
20140197783 | APPARATUS AND METHOD FOR TRANSMITTING POWER AND TRANSCEIVING DATA USING MUTUAL RESONANCE, AND APPARATUS AND METHOD FOR RECEIVING POWER AND TRANSCEIVING DATA USING MUTUAL RESONANCE - An apparatus configured to transmit power, and transceive data, using mutual resonance, includes a power transmitter configured to wirelessly transmit power to a device, using a power transmission frequency as a resonant frequency. The apparatus further includes a communication unit configured to transceive data to and from the device, using a communication frequency as a resonant frequency. The apparatus further includes a controller configured to determine a charging state of the device based on the data received from the device, and control an amount of the power based on the charging state. | 07-17-2014 |
20140203657 | WIRELESS POWER TRANSMISSION APPARATUS AND WIRELESS POWER TRANSMISSION METHOD - A wireless power transmission apparatus includes resonators configured to transmit a power wirelessly to another resonator, and a controller configured to control a current magnitude and/or a voltage magnitude of a power to be provided to each of the resonators. The apparatus further includes a feeder configured to provide the power to each of the resonators. | 07-24-2014 |
20140203895 | RESONATOR HAVING INCREASED ISOLATION - A resonator having increased isolation includes a first resonator having first characteristics, and configured to resonate with another resonator having the first characteristics; and a second resonator having second characteristics, and configured to resonate with another resonator having the second characteristics; wherein the resonator has an arrangement and a structure that minimizes a coupling between the first resonator and the second resonator. | 07-24-2014 |
20140204860 | RECEPTION NODE AND TRANSMISSION NODE USING MUTUAL RESONANCE, POWER AND DATA TRANSCEIVING SYSTEM USING MUTUAL RESONANCE, AND METHOD THEREOF - A reception (RX) node using mutual resonance includes a target resonator configured to receive power via mutual resonance with a source resonator; a controller configured to wake up in response to the received power, determine a point in time at which the controller woke up to be a point in time at which synchronization with other RX nodes is performed, and generate a data packet, and a sensor configured to wake up in response to the received power, sense information. | 07-24-2014 |
20140265614 | WIRELESS POWER TRANSMISSION APPARATUS AND WIRELESS POWER RECEPTION APPARATUS - A wireless power transmission apparatus includes a resonance unit including resonators and configured to form a magnetic resonant coupling with another resonator, and a feeding unit configured to transmit alternating current (AC) power to one of the resonators. The wireless power transmission apparatus further includes a controller configured to determine a value of a capacitor connected to one of the resonators, based on a magnitude of a magnetic field formed by the resonance unit. | 09-18-2014 |
20140265615 | METHOD AND APPARATUS FOR CONTROLLING WIRELESS POWER TRANSMISSION - A method and an apparatus for controlling wireless power transmission are provided. An apparatus for controlling wireless power transmission includes a controller configured to determine an output voltage of a power factor correction unit based on charging information of a battery, the power factor correction unit configured to correct an input voltage into the determined output voltage, and output a variable voltage, and a resonance unit configured to transmit power converted from the variable voltage to a wireless power reception apparatus. | 09-18-2014 |
20140285139 | WIRELESS POWER TRANSMISSION AND RECEPTION SYSTEM - A wireless charging station, an electric vehicle charged wirelessly, and a method of charging an electric vehicle are provided. A wireless charging station include a charging unit configured to transmit power wirelessly to an electric vehicle, using a source resonator installed in the charging station; and a driving unit configured to move a target resonator connected to the source resonator from a position at which the target resonator is mounted on the charging unit to an installation space of the electric vehicle, when the electric vehicle is disposed in a charging area of the charging station. | 09-25-2014 |
20140340033 | WIRELESS POWER TRANSMISSION APPARATUS AND METHOD - A wireless power transmission apparatus for tracking a charging capacity of each of a plurality of wireless power reception apparatuses in an environment in which the plurality of wireless power reception apparatuses are charged includes a communication unit configured to receive information about either one or both of a charging support power and a requested power from each of the plurality of wireless power reception apparatuses, a controller configured to determine a charging capacity for a wireless power reception apparatus supporting the charging support power among the plurality of wireless power reception apparatuses based on the information about the charging support power, and a power tracker configured to re-track the determined charging capacity based on charging status information received from the plurality of wireless power reception apparatuses. | 11-20-2014 |
20140347006 | WIRELESS POWER TRANSMISSION APPARATUS AND METHOD - A wireless power transmission apparatus for preventing a misconnection between the wireless power transmission apparatus and a wireless power reception apparatus in an environment in which a plurality of wireless power transmission apparatuses charge a plurality of wireless reception apparatuses includes a detector configured to detect a signal induced in a resonator, and a controller configured to determine either one or both of a transmission interval of a wake-up power and a point in time at which the wake-up power is transmitted to prevent a waveform of the detected signal from overlapping a waveform of the wake-up power. | 11-27-2014 |
20140348734 | METHOD FOR EXTRACTION OF LITHIUM FROM LITHIUM BEARING SOLUTION - A method of extracting lithium from a lithium bearing solution and specifically, economically extracting lithium from a lithium bearing solution comprising the steps of: adding a nucleus particle to a lithium bearing solution; and precipitating the dissolved lithium in the lithium bearing solution as lithium phosphate by adding a phosphorous supplying material to the lithium bearing solution including the nucleus particle is provided. | 11-27-2014 |
20140375256 | WIRELESS POWER TRANSMISSION SYSTEM WITH ABILITY TO DETERMINE CHARGING CIRCUMSTANCES - A wireless power receiver includes a power receiver configured to wirelessly receive power, and including a direct current (DC)-to-DC (DC/DC) converter, and a power detector configured to detect power detection information from a front end of the DC/DC converter. | 12-25-2014 |
20150022013 | POWER TRANSMITTING UNIT (PTU) AND POWER RECEIVING UNIT (PRU), AND COMMUNICATION METHOD OF PTU AND PRU IN WIRELESS POWER TRANSMISSION SYSTEM - A communication method of a power transmitting unit (PTU) in a wireless power transmission system includes receiving a connection request signal from each of at least one power receiving unit (PRU), transmitting impedance change information of the at least one PRU to the at least one PRU, sensing a change in an impedance of each of the at least one PRU receiving the impedance change information, and determining whether each of the at least one PRU is connected based on the sensed change in the impedance. | 01-22-2015 |
20150022015 | METHOD AND APPARATUS FOR SYNCHRONIZATION CONTROL IN WIRELESS POWER TRANSMISSION SYSTEM - A method of synchronization control of a power transmitting unit (PTU) includes network-connecting a PTU to a PTU operating in a slave mode by setting an operation mode of the PTU to a master mode, and transmitting a signal to a power receiving unit (PRU) by controlling either one or both of a communication time and a communication frequency of the PTU operating in the slave mode. | 01-22-2015 |
20150022016 | METHOD AND APPARATUS FOR CONTROLLING INTERFERENCE IN WIRELESS POWER TRANSMISSION SYSTEM - An interference control method of a power transmitting unit (PTU) includes determining whether the PTU is in an interference environment in which interference by a neighbor PTU occurs, and controlling a communication parameter of either one or both of the neighbor PTU and a power receiving unit (PRU) in response to a result of the determining being that the PTU is in the interference environment. | 01-22-2015 |
20150022017 | METHOD OF CONTROLLING IMPEDANCE MATCHING WITH RESPECT TO MULTIPLE TARGETS IN WIRELESS POWER TRANSMISSION SYSTEM, AND WIRELESS POWER TRANSMISSION SYSTEM ADOPTING THE METHOD - A method of operating a wireless power transmission apparatus includes receiving information on rectifier output voltages from at least one wireless power reception apparatus; determining whether the rectifier output voltages are within a predetermined operating range, and controlling an impedance of the wireless power transmission apparatus based on a result of the determining. | 01-22-2015 |
20150042169 | WIRELESS POWER TRANSMISSION METHOD AND APPARATUS FOR STABLY TRANSMITTING POWER TO PLURALITY OF WIRELESS POWER RECEPTION APPARATUSES - A wireless power transmission apparatus includes a plurality of transmission (TX) resonators configured to resonate with at least one reception (RX) resonator, and wirelessly transmit power to the at least one RX resonator; and a frequency controller configured to control the input frequency so that power is stably supplied to the at least one RX resonator. | 02-12-2015 |
20150042173 | METHOD AND APPARATUS FOR WIRELESS POWER TRANSMISSION FOR EFFICENT POWER DISTRIBUTION - A wireless power transmission apparatus includes a communicator configured to receive information associated with a reference power of a wireless power reception apparatus and information associated with a power measured at an input terminal of a direct current-to-direct current (DC/DC) converter of the wireless power reception apparatus, a controller configured to control an output power based on the information associated with the reference power and the information associated with the power measured, and a source resonator configured to transmit the output power to the wireless power reception apparatus by resonating with a target resonator. | 02-12-2015 |
20150042274 | APPARATUS AND METHOD FOR WIRELESS POWER RECEPTION - An apparatus and a method for wireless power reception include converting a received wireless power to a wireless power for charging using a synchronous rectifier and a direct current/direct current (DC/DC) converter having a structure providing a high efficiency and low heat generation even when a high charging current is supplied. | 02-12-2015 |
20150045227 | WIRELESS POWER TRANSMISSION SYSTEM AND WIRELESS POWER RELAY APPARATUS - A wireless power relay apparatus includes a relay resonator configured to relay power from a source resonator configured to wirelessly transmit the power, to a target resonator configured to wirelessly receive the power through a mutual resonance, the relay resonator having a higher quality factor than the source resonator and the target resonator. | 02-12-2015 |
20150061399 | WIRELESS POWER RECEPTION AND TRANSMISSION APPARATUS - A wireless power receiving device and a wireless power transmission apparatus are provided. The wireless power receiver may include a resonator configured to emit an electromagnetic field, a blocker configured to surround a portion of an exterior of the resonator, and a spacer disposed between the resonator and the blocker. | 03-05-2015 |
20150069854 | METHOD AND APPARATUS FOR WIRELESS POWER TRANSMISSION WITH HARMONIC NOISE CANCELLATION - A wireless power transmission apparatus includes a source resonator configured to transmit an output power from which a harmonic component has been cancelled to a wireless power reception apparatus by resonating with a target resonator of the wireless power transmission apparatus, and a resonant power generator configured to differentially input a first input signal and a second input signal to the source resonator, and cancel the harmonic component of the output power. | 03-12-2015 |
20150076921 | RESONATING APPARATUS WITH INCREASED ISOLATION FOR STABLE WIRELESS POWER TRANSMISSION - A resonator has an increased isolation for stable wireless power transmission. A material that reduces resonance coupling may be disposed in a space between each of a plurality of resonators and a resonator adjacent to each of the plurality of resonators. A material that reduces resonance coupling may be disposed on a plane opposite to a direction in which a resonator resonates. Power at an operating frequency set to be equal to or within a predetermined range of a frequency corresponding to a resonant mode may be injected into a plurality of transmission resonators. | 03-19-2015 |
20150077051 | METHOD OF POWER TRANSMITTING UNIT (PTU) FOR DETERMINING LOCATION OF POWER RECEIVING UNIT (PRU), AND PTU EMPLOYING THE METHOD - A power transmitting unit (PTU) transmits a power wirelessly based on a location of a power receiving unit (PRU). The PTU determines whether the PRU is located within a charging area of the PTU based on frequency information corresponding to an inflection point detected on a curve of electrical characteristics of a resonator of the PTU. | 03-19-2015 |