# US 11,309,739 B2 · Wireless power transmission apparatus and wireless power transmission method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,309,739 B2 - Document ID: US11309739B2 - Status: Granted - Kind: B2 - Application number: 16/411,756 - Filed: 2019-05-14 - Published: 2019-09-05 - Granted: 2022-04-19 - Earliest claimed: 2013-01-22 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Keum Su Song; Sang Wook Kwon; Ki Young Kim; Yun Kwon Park; Jae Hyun Park; Chi Hyung Ahn; Young Ho Ryu - Web page: https://patentgrep.com/patent/US11309739B2 ## CPC - H02J 50/12: of the resonant type - H02J 50/402: {the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas} - H02J 50/80: involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices - H02J 50/90: involving detection or optimisation of position, e.g. alignment - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY ## Abstract 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. ## Claims ### Claim 1 A wireless power transmission apparatus comprising: resonators configured to wirelessly transmit first power to a wireless power reception apparatus; a controller configured to control at least one from among a current magnitude and a voltage magnitude of second power to be provided to at least one of the resonators; and a power feeding circuit configured to provide the second power to the at least one of the resonators, wherein the controller is further configured to: obtain at least one from among a distance, a direction and an angle between the wireless power transmission apparatus and the wireless power reception apparatus in a wireless charging area of the wireless power transmission apparatus; adjust the at least one from among the current magnitude and the voltage magnitude of the second power based on the at least one of the distance, the direction or the angle between the wireless power transmission apparatus and the wireless power reception apparatus; identify an impedance of an N-port network between a target resonator of the wireless power reception apparatus connected to the N-port network and each of the resonators connected to the N-port network; and control the at least one from among the current magnitude and the voltage magnitude of the second power further based on the impedance. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the controller is further configured to: obtain a number of wireless power reception apparatuses to be charged in the wireless charging area; and adjust the at least one from among the current magnitude and the voltage magnitude of the second power further based on the number of wireless power reception apparatuses to be charged. ### Claim 3 (depends on 1) The apparatus of claim 1, wherein the controller is further configured to: obtain information on a change in a location of wireless power reception apparatus in the wireless charging area; and adjust the at least one from among the current magnitude and the voltage magnitude of the second power further based on the information on the change in the location of wireless power reception apparatus. ### Claim 4 (depends on 1) The apparatus of claim 1, wherein the resonators are coupled to each other, or separated from each other, and wherein the power feeding circuit comprises an inductor. ### Claim 5 (depends on 1) The apparatus of claim 1, wherein the controller is further configured to: change the at least one from among the current magnitude and the voltage magnitude sequentially in a range of a predetermined current magnitude and/or the and a predetermined voltage magnitude that are applicable by the power feeding circuit. ### Claim 6 (depends on 1) The apparatus of claim 1, wherein the controller is further configured to: change the at least one from among the current magnitude and the voltage magnitude randomly in a range of a predetermined current magnitude and a predetermined voltage magnitude that is applicable by the power feeding circuit. ### Claim 7 (depends on 1) The apparatus of claim 1, wherein the controller is further configured to: change the at least one from among the current magnitude and the voltage magnitude based on a lookup table in a range of a predetermined current magnitude and a predetermined voltage magnitude that are applicable by the power feeding circuit. ### Claim 8 (depends on 1) The apparatus of claim 1, wherein each of the resonators comprises: a first transmission line comprising a first signal conducting portion, a second signal conducting portion, and a first ground conducting portion corresponding to the first signal conducting portion and the second signal conducting portion; a first conductor connected to the first signal conducting portion and the first ground conducting portion; a second conductor connected to the second signal conducting portion; and a capacitor inserted in series between the first signal conducting portion and the second signal conducting portion with respect to a current flowing through the first signal conducting portion and the second signal conducting portion. ### Claim 9 (depends on 1) The apparatus of claim 1, wherein the resonators comprises: a first resonator comprising a surface parallel to an xy plane; a second resonator comprising a surface parallel to a yz plane; and a third resonator comprising a surface parallel to a zx plane. ### Claim 10 A wireless power transmission apparatus comprising: resonators configured to wirelessly transmit first power to a wireless power reception apparatus; a controller configured to control at least one from among a current phase and a voltage phase of the power to be provided to at least one of the resonators; and a power feeding circuit configured to provide the second power to the at least one of the resonators, wherein the controller is further configured to: obtain at least one from among a distance, a direction and an angle between the wireless power transmission apparatus and the wireless power reception apparatus in a wireless charging area of the wireless power transmission apparatus; adjust the at least one from among the current phase and the voltage phase of the second power based on at least one of the distance, the direction or the angle between the wireless power transmission apparatus and the wireless power reception apparatus; identify an impedance of an N-port network between a target resonator of the wireless power reception apparatus connected to the N-port network and each of the resonators connected to the N-port network; and control the at least one from among the current phase and the voltage phase of the second power further based on the impedance. ### Claim 11 (depends on 10) The apparatus of claim 10, wherein the controller is further configured to: obtain a number of wireless power reception apparatuses to be charged in the wireless charging area; and adjust the at least one from among the current phase and the voltage phase of the second power further based on the number of wireless power reception apparatuses to be charged. ### Claim 12 (depends on 10) The apparatus of claim 10, wherein the controller is further configured to: obtain information on a change in a location of wireless power reception apparatus in the wireless charging area; and adjust the at least one from among the current phase and the voltage phase of the second power further based on the information on the change in the location of wireless power reception apparatus. ### Claim 13 (depends on 10) The apparatus of claim 10, wherein the resonators comprises: a first resonator comprising a surface parallel to an xy plane; a second resonator comprising a surface parallel to a yz plane; and a third resonator comprising a surface parallel to a zx plane. ### Claim 14 A method for operating a wireless power transmission apparatus, the wireless power transmission apparatus comprising resonators to wirelessly transmit first power to a wireless power reception apparatus and a power feeding circuit to provide second power to at least one of the resonators, the method comprising: controlling at least one from among a current magnitude, a current phase, a voltage magnitude and a voltage phase of the second power to be provided to the at least one of the resonators, wherein the controlling comprises: obtaining at least one from among a distance, a direction and an angle between the wireless power transmission apparatus and the wireless power reception apparatus in a wireless charging area of the wireless power transmission apparatus; adjusting the at least one from among the current magnitude, the current phase, the voltage magnitude and the voltage phase of the second power based on the at least one of the distance, the direction or the angle between the wireless power transmission apparatus and the wireless power reception apparatus; identifying an impedance of an N-port network between a target resonator of the wireless power reception apparatus connected to the N-port network and each of the resonators connected to the N-port network; and controlling the at least one from among the current magnitude and the voltage magnitude of the second power further based on the impedance. ### Claim 15 (depends on 14) The method of claim 14, wherein the controlling further comprises: obtaining a number of wireless power reception apparatuses to be charged in the wireless charging area, and wherein the adjusting comprises: adjusting the at least one from among the current magnitude, the current phase, the voltage magnitude and the voltage phase of the second power based on the number of wireless power reception apparatuses to be charged and the at least one of the distance, the direction or the angle between the wireless power transmission apparatus and the wireless power reception apparatus. ### Claim 16 (depends on 14) The method of claim 14, wherein the controlling further comprises: obtaining information on a change in a location of wireless power reception apparatus in the wireless charging area, and wherein the adjusting comprises: adjusting the at least one from among the current magnitude, the current phase, the voltage magnitude and the voltage phase of the second power based on the information on the change in the location of wireless power reception apparatus and the at least one of the distance, the direction or the angle between the wireless power transmission apparatus and the wireless power reception apparatus. ### Claim 17 (depends on 14) The method of claim 14, wherein the controlling further comprises: calculating an impedance of an N-port network between the other resonator connected the N-port network and the resonators connected to the N-port network, and wherein the adjusting comprises: adjusting the at least one from among the current magnitude, the current phase, the voltage magnitude and the voltage phase of the second power based on the impedance and the at least one of the distance, the direction or the angle between the wireless power transmission apparatus and the wireless power reception apparatus. ### Claim 18 (depends on 14) A non-transitory computer-readable recording medium storing a program to implement a method of claim 14.