Patent application number | Description | Published |
20130099591 | RECEIVED POWER CONVERSION DEVICE FOR RESONANT WIRELESS CHARGING SYSTEM - Provided is a received power conversion device for a resonant wireless charging system, including a wireless power receiver for receiving wireless power from a wireless power transmission device, a rectifier for rectifying power in an Alternating Current (AC) form received in the wireless power receiver into a Direct Current (DC), a free-wheeling switching unit for switching according to a switching control signal to form a path for free-wheeling the power in the AC form, a feedback circuit fed back with an output signal of a corresponding power conversion device to detect a level of the output signal, and a controller for controlling switching of the free-wheeling switching unit according to the output level detected by the feedback circuit. | 04-25-2013 |
20130099732 | METHOD FOR CONTROLLING CHARGING POWER AND WIRELESS CHARGING APPARATUS FOR THE SAME - Disclosed is a method for advance detection of output power, before arrival at a boundary frequency between an inband and an outband during frequency tracking in a wireless charging apparatus, the wireless charging apparatus including a first resonator resonating at a lower-limit frequency of the inband and a second resonator resonating at an upper-limit frequency of the inband, to adaptively adjust the frequency based on the power values output from the first and second resonators, and to determine a power transmission control value corresponding to the adjusted frequency, thereby enabling frequency control and power control within the inband. | 04-25-2013 |
20130099733 | WIRELESS POWER TRANSMITTER AND METHOD OF CONTROLLING THE SAME - A method and a wireless power transmitter for transmitting charging power to a wireless power receiver are provided. The method includes applying the charging power to the wireless power receiver; determining whether a current value of the charging power is greater than a predetermined threshold; and driving the overcurrent protection circuit upon a determination that the current value of the charging power is greater than the predetermined threshold. | 04-25-2013 |
20130200844 | WIRELESS POWER CHARGING METHOD AND APPARATUS - A method and apparatus are provided that efficiently perform wireless power charging. A power supply device checks an amount of charging power required by the power receiving device; determines a power level of the charging power that to be supplied over time, based on the amount of the charging power required by the power receiving device; transmits the charging power corresponding to the determined power level to the power receiving device; periodically receives a report message about a charging situation of the power receiving device from the power receiving device; calculates remaining required power, based on the report message received from the power receiving device; adjusts the determined power level depending on the calculated remaining power; and transmits the charging power corresponding to the adjusted power level to the power receiving device. | 08-08-2013 |
20130221914 | WIRELESS POWER RECEIVER AND CONTROLLING METHOD THEREOF - Disclosed is a method for controlling a wireless power receiver including a charging unit. The method includes receiving wireless power, rectifying the received wireless power and outputting Direct Current (DC) wireless power, and determining whether the voltage of the rectified wireless power is greater than or equal to the allowable voltage of the charging unit. | 08-29-2013 |
20130293028 | POWER TRANSMITTER AND METHOD FOR DETECTING NON-INTENDED OBJECT OF POWER RECEPTION - Methods and apparatus are provided for detecting a non-intended object of power reception by a power transmitter. Power transmission for communication is performed, when the load change is sensed that has a value greater than or equal to a predetermined threshold. It is determined whether a subscription request, for subscribing to a network is received within a predetermined time period. The power transmission for communication is stopped when the subscription request is not received within the predetermined time period. Power is transmitted to a power receiver that has transmitted the subscription request, when the subscription request is received within the predetermined time period. It is determined whether a leakage power value exceeds an allowable range, when the power state report is received from the power receiver. The transmission of the power to the power receiver is stopped, when the leakage power value exceeds the allowable range. | 11-07-2013 |
20140017998 | CORDLESS CHARGING APPARATUS - A cordless charging apparatus is provided. The cordless charging apparatus includes a cordless power reception resonator including a feeding connector for electric feeding, and a ground connector for grounding. The ground connector is spaced apart from a connection terminal connecting the cordless power reception resonator to a circuit. | 01-16-2014 |
20160118844 | WIRELESS POWER TRANSMITTER AND METHOD OF CONTROLLING THE SAME - A wireless power transmitter and a method of controlling the wireless power transmitter are provided. The wireless power transmitter includes a power supply configured to supply charging power; a power transmitter configured to transmit the charging power to a wireless power receiver; an overcurrent protection circuit configured to change an impedance of the wireless power transmitter; and a controller configured to monitor a current value of an output terminal of the power supply, and connect the overcurrent protection circuit to the power transmitter if the monitored current value is greater than a predetermined threshold. | 04-28-2016 |