# US 12,015,335 B2 · Electronic device and multi-wireless transmission power control method based on states of plurality of external electronic devices > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,015,335 B2 - Document ID: US12015335B2 - Status: Granted - Kind: B2 - Application number: 17/057,234 - Filed: 2019-07-02 - Published: 2021-05-13 - Granted: 2024-06-18 - Earliest claimed: 2018-07-03 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Mincheol Ha; Kwangseob Kim; Kihyun Kim; Dongzo Kim; Jiwon Kim; Jihye Kim; Yunjeong Noh; Keumsu Song; Changhak O; Kyungmin Lee; Hyungkoo Chung; Jongchul Hong; Yongsang Yun - Web page: https://patentgrep.com/patent/US12015335B2 ## CPC - H02M 1/44: Circuits or arrangements for compensating for electromagnetic interference in converters or inverters - H02J 7/02: for charging batteries from AC mains by converters - H02J 7/96: in response to battery voltage - H02J 50/10: using inductive coupling - 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 - H02M 3/33573: {Full-bridge at primary side of an isolation transformer} - H02J 7/50: acting upon multiple batteries simultaneously or sequentially - H02M 1/0058: {by employing soft switching techniques, i.e. commutation of transistors when applied voltage is zero or when current flow is zero (using an auxiliary actively switched resonant commutation circuit connected to an intermediate DC voltage or between two push-pull branches of an inverter bridge H02M7/4811; in resonant inverters H02M7/4815; in inverters operating from a resonant DC source H02M7/4826)} - H02M 1/008: {Plural converter units for generating at two or more independent and non-parallel outputs, e.g. systems with plural point of load switching regulators} - Y02B 70/10: Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes - H02M: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (transformers H01F; dynamo-electric converters H02K47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H02P) - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS ## Abstract Various embodiments relating to an electronic device are disclosed, and according to an embodiment, the electronic device may comprise: a plurality of coils; a first power generation circuit electrically connected to at least one of the plurality of coils; a second power generation circuit electrically connected to at least one of the plurality of coils; and a control circuit, wherein when the approach of a second external electronic device is detected while first power is provided to a first external electronic device by using a first frequency via the first power generation circuit, the control circuit allows the frequency of the second power generation circuit to be configured to a second frequency different from a first frequency in order to provide second power to the second external electronic device. Other embodiments may be possible. ## Claims ### Claim 1 An electronic device, comprising: a plurality of coils; a first power generation circuit electrically connected to at least one of the plurality of coils; a second power generation circuit electrically connected to at least one of the plurality of coils; and a control circuit, wherein the control circuit is configured to: when approach of a second external electronic device is detected by using at least part of the plurality of coils while first power is provided to a first external electronic device by using a first frequency via the first power generation circuit, for providing the second external electronic device with second power, set a frequency of the second power generation circuit to a second frequency different from the first frequency and set a first voltage of the second power generation circuit to a second voltage which corresponds to the second frequency, wherein the second voltage is a voltage capable of compensating for a difference between power provided by using the first frequency of the first power generation circuit and power provided by using the second frequency of the second power generation circuit. ### Claim 2 (depends on 1) The electronic device of claim 1, wherein the plurality of coils include a first coil and a second coil, and wherein the first coil is electrically connected to the first power generation circuit, and the second coil is electrically connected to the second power generation circuit. ### Claim 3 (depends on 1) The electronic device of claim 1, wherein the second frequency is a frequency higher than the first frequency by a designated frequency. ### Claim 4 (depends on 1) The electronic device of claim 1, wherein the second voltage is a voltage higher than the first voltage by a designated voltage corresponding to the second frequency. ### Claim 5 (depends on 3) The electronic device of claim 3, wherein the first power and the second power have a same magnitude. ### Claim 6 (depends on 1) The electronic device of claim 1, wherein the control circuit is configured to change the first frequency to a frequency lower than the second frequency if the first power is greater than the second power. ### Claim 7 (depends on 1) The electronic device claim 1, wherein the first power generation circuit includes a first inverter, wherein the second power generation circuit includes a second inverter, and wherein the first inverter and the second inverter include at least one field effect transistor (FET). ### Claim 8 (depends on 7) The electronic device of claim 7, wherein the control circuit is configured to change a voltage provided to a drain of the at least one field effect transistor (FET) of the second inverter to a second voltage which corresponds to the second frequency. ### Claim 9 (depends on 1) The electronic device of claim 1, wherein the control circuit is configured to control to change the first frequency and the second frequency to a third frequency and a fourth frequency when a charging state of at least one of the first external electronic device and the second external electronic device is a full charging state.