# US 11,444,481 B2 · Wireless power transmitter, electronic device and controlling method thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,444,481 B2 - Document ID: US11444481B2 - Status: Granted - Kind: B2 - Application number: 17/022,471 - Filed: 2020-09-16 - Published: 2020-12-31 - Granted: 2022-09-13 - Earliest claimed: 2016-12-23 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Kyung-Woo Lee; Sang-Wook Kwon - Web page: https://patentgrep.com/patent/US11444481B2 ## CPC - H02J 50/20: using microwaves or radio frequency waves - H02J 7/04: Regulation of charging current or voltage - H02J 50/90: involving detection or optimisation of position, e.g. alignment - H04B 1/3838: {Arrangements for reducing RF exposure to the user, e.g. by changing the shape of the transceiver while in use} - H01Q 21/065: {Patch antenna array} - H02J 50/40: using two or more transmitting or receiving devices (H02J50/50 takes precedence) - 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} - H04B 5/79: for data transfer in combination with power transfer - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - H04B: TRANSMISSION - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) ## Abstract A wireless power transmitter includes an antenna and a processor configured to control the antenna to respectively transmit detection powers in a plurality of directions, the detection powers including a first detection power and a second detection power, the first detection power including a first direction information and identification information of the wireless power transmitter, the first detection power being transmitted in a first direction, the second detection power including a second direction information and the identification information of the wireless power transmitter, the second detection power being transmitted in a second direction different from the first direction; control to receive a communication signal including the first direction information and the identification information of the wireless power transmitter from an electronic device which received the first detection power; and based on receiving the communication signal, control the antenna to transmit power for charging in the first direction. ## Claims ### Claim 1 A wireless power transmitter comprising: an antenna; a communication circuit; and a processor, wherein the processor is configured to: control the antenna to respectively transmit a plurality of detection powers in a plurality of directions, the plurality of detection powers comprising a first detection power and a second detection power, the first detection power including a first direction information and identification information of the wireless power transmitter, the first detection power being transmitted in a first direction, the second detection power including a second direction information and the identification information of the wireless power transmitter, the second detection power being transmitted in a second direction different from the first direction, control the communication circuit to receive a communication signal including the first direction information and the identification information of the wireless power transmitter from an electronic device which received the first detection power, and based on receiving the communication signal, control the antenna to transmit power for charging in the first direction, wherein the communication signal further includes identification information of the electronic device. ### Claim 2 (depends on 1) The wireless power transmitter of claim 1, wherein the processor is further configured to: control the communication circuit to receive another communication signal including the second direction information and the identification information of the wireless power transmitter from another electronic device which received the second detection power, and based on receiving the another communication signal, control the antenna to transmit power for charging in the second direction. ### Claim 3 (depends on 1) The wireless power transmitter of claim 1, wherein the antenna sequentially transmits the plurality of detection powers, or transmits the plurality of detection powers at substantially a same time. ### Claim 4 (depends on 1) The wireless power transmitter of claim 1, wherein the communication circuit receives another communication signal including reception power related information from the electronic device. ### Claim 5 (depends on 4) The wireless power transmitter of claim 4, wherein the processor is further configured to: determine whether the reception power related information satisfies a predetermined condition, adjust a magnitude of the power for charging when the reception power related information does not satisfy the predetermined condition, and control such that the magnitude of the power for charging is maintained when the reception power related information satisfies the predetermined condition. ### Claim 6 (depends on 1) The wireless power transmitter of claim 1, wherein the antenna comprises a plurality of patch antennas, and the processor is configured to perform control such that the first detection power including the first direction information is transmitted in the first direction using a first part of the plurality of patch antennas, and the second detection power including the second direction information is transmitted in the second direction using a second part of the plurality of patch antennas. ### Claim 7 (depends on 1) The wireless power transmitter of claim 1, wherein each of the first detection power and the second detection power further comprises distance information, the processor is further configured to: control the communication circuit to receive the communication signal including the first direction information, the identification information, and the distance information from the electronic device, and based on receiving the communication signal, control the antenna to transmit power for charging based on the first direction information and the distance information. ### Claim 8 A control method of a wireless power transmitter, the control method comprising: controlling, by a processor of the wireless power transmitter, an antenna of the wireless power transmitter, to transmit a plurality of detection powers in a plurality of directions, respectively, the plurality of detection powers comprising a first detection power and a second detection power, the first detection power including a first direction information and identification information of the wireless power transmitter, the first detection power being transmitted in a first direction, the second detection power including a second direction information and the identification information of the wireless power transmitter, the second detection power being transmitted in a second direction different from the first direction; controlling, by the processor, a communication circuit of the wireless power transmitter, to receive a communication signal including the first direction information and the identification information of the wireless power transmitter from an electronic device which received the first detection power; and based on receiving the communication signal, controlling, by the processor, to transmit power for charging in the first direction, wherein the communication signal further includes identification information of the electronic device. ### Claim 9 (depends on 8) The control method of claim 8, further comprising: controlling the communication circuit to receive another communication signal including the second direction information and the identification information of the wireless power transmitter from another electronic device which received the second detection power; and based on receiving the another communication signal, control the antenna to transmit power for charging in the second direction. ### Claim 10 (depends on 8) The control method of claim 8, wherein the antenna sequentially transmits the plurality of detection powers, or transmits the plurality of detection powers at substantially a same time. ### Claim 11 (depends on 8) The control method of claim 8, wherein the communication circuit receives another communication signal including reception power related information from the electronic device. ### Claim 12 (depends on 11) The control method of claim 11, further comprising: determining whether the reception power related information satisfies a predetermined condition; adjusting a magnitude of the power for charging when the reception power related information does not satisfy the predetermined condition; and controlling such that the magnitude of the power for charging is maintained when the reception power related information satisfies the predetermined condition. ### Claim 13 (depends on 8) The control method of claim 8, wherein the antenna comprises a plurality of patch antennas, wherein controlling the antenna to respectively transmit the plurality of detection powers in the plurality of directions comprises: controlling such that the first detection power including the first direction information is transmitted in the first direction using a first part of the plurality of patch antennas, and the second detection power including the second direction information is transmitted in the second direction using a second part of the plurality of patch antennas. ### Claim 14 (depends on 8) The control method of claim 8, wherein each of the first detection power and the second detection power further comprises distance information, further comprising: controlling the communication circuit to receive the communication signal including the first direction information, the identification information, and the distance information from the electronic device; and based on receiving the communication signal, controlling the antenna to transmit power for charging based on the first direction information and the distance information. ### Claim 15 An electronic device comprising: an antenna; a communication circuit; and a processor, wherein the processor is configured to: control the antenna to receive, from a first wireless power transmitter, a first detection power including first direction information and first identification information of the first wireless power transmitter, control the antenna to receive, from a second wireless power transmitter, a second detection power including second direction information and second identification information of the second wireless power transmitter, select, based on the first detection power and the second detection power, a wireless power transmitter between the first wireless power transmitter and the second wireless power transmitter, control the communication circuit to transmit, to the selected wireless power transmitter, direction information and identification information included in a detection power received from the selected wireless power transmitter, and control the antenna to receive, from the selected wireless power transmitter, power for charging. ### Claim 16 (depends on 15) The electronic device of claim 15, wherein the processor is configured to select, based on a first strength of the first detection power and a second strength of the second detection power, the wireless power transmitter. ### Claim 17 (depends on 15) The electronic device of claim 15, wherein the processor is configured to select, based on a first distance between the electronic device and the first wireless power transmitter and a second distance between the electronic device and the second wireless power transmitter, the wireless power transmitter. ### Claim 18 (depends on 15) The electronic device of claim 15, wherein the antenna sequentially receives the first detection power and the second detection power, or receives the first detection power and the second detection power at substantially a same time.