# US 12,003,119 B2 · Electronic device and method for transmitting power based on multiple coils > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,003,119 B2 - Document ID: US12003119B2 - Status: Granted - Kind: B2 - Application number: 17/742,554 - Filed: 2022-05-12 - Published: 2022-11-17 - Granted: 2024-06-04 - Earliest claimed: 2021-05-12 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Seungshik Shin; Baewon Park; Sungchul Park; Jinsik Choi - Web page: https://patentgrep.com/patent/US12003119B2 ## CPC - H02J 50/12: of the resonant type - H02J 50/70: involving the reduction of electric, magnetic or electromagnetic leakage fields - H01F 5/02: wound on non-magnetic supports, e.g. formers - H01F 38/14: Inductive couplings - H02J 7/933: {the cycle being controlled or terminated in response to electric parameters} - H02J 7/971: {the charge cycle being controlled or terminated in response to non-electric parameters} - H02J 50/005: {Mechanical details of housing or structure aiming to accommodate the power transfer means, e.g. mechanical integration of coils, antennas or transducers into emitting or receiving devices} - H02J 50/10: using inductive coupling - 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 - H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES ## Abstract According to various embodiments, an electronic device may comprise a battery, a multi-coil circuit including a first coil and a second coil, a magnetic field control circuit electrically connected with the multi-coil circuit, a power management module electrically connected with the battery and the magnetic field control circuit, and a processor electrically connected with the multi-coil circuit, the magnetic field control circuit, and the power management module. Upon detecting an external electronic device to receive wireless power, the processor may control the magnetic field control circuit to transmit power having a first characteristic to the external electronic device through the first coil, and upon transmitting the power having the first characteristic, control the magnetic field control circuit to maintain transmission through the first coil based on a first operating frequency and a threshold operating frequency in a designated frequency range, or upon transmitting the power having the first characteristic, adjust an operating voltage based on the first operating frequency and the threshold operating frequency and control the magnetic field control circuit to transmit power having a second characteristic through the first coil and the second coil based on a first frequency varied in response to the adjusted operating voltage. Other embodiments may also be possible. ## Claims ### Claim 1 An electronic device comprising: a battery; a multi-coil circuit including a first coil and a second coil; a magnetic field control circuit electrically connected with the multi-coil circuit; a power management module electrically connected with the battery and the magnetic field control circuit; and a processor electrically connected with the multi-coil circuit, the magnetic field control circuit, and the power management module, wherein the processor is configured to: upon detecting an external electronic device to receive wireless power, control the magnetic field control circuit to transmit power having a first characteristic to the external electronic device through the first coil, and upon transmitting the power having the first characteristic, control the magnetic field control circuit to maintain transmission through the first coil based on a first operating frequency and a threshold operating frequency in a designated frequency range, or upon transmitting the power having the first characteristic, adjust an operating voltage based on the first operating frequency and the threshold operating frequency and control the magnetic field control circuit to transmit power having a second characteristic through the first coil and the second coil based on a first frequency varied in response to the adjusted operating voltage. ### Claim 2 (depends on 1) The electronic device of claim 1, wherein the processor is further configured to: when the first operating frequency is greater than or equal to the threshold operating frequency upon transmitting the power having the first characteristic, control the magnetic field control circuit to maintain the transmission of the power having the first characteristic through the first coil, when the first operating frequency is less than the threshold operating frequency upon transmitting the power having the first characteristic, identify a variation in the first operating frequency while increasing the operating voltage to a maximum voltage in a designated operating voltage range, when the varied first operating frequency is greater than or equal to the threshold operating frequency, control the magnetic field control circuit to maintain the transmission of the power having the first characteristic through the first coil, and when the varied first operating frequency is less than the threshold operating frequency, control the magnetic field control circuit to transmit the power having the second characteristic through the first coil and the second coil connected in parallel. ### Claim 3 (depends on 1) The electronic device of claim 1, wherein the first coil is a circular coil, and the second coil is a coil surrounding the first coil. ### Claim 4 (depends on 2) The electronic device of claim 2, wherein a first end and a second end of the first coil are connected with the magnetic field control circuit, and the first end of the first coil is connected with the second coil, wherein a first end of the second coil is connected with the first end of the first coil, and a second end of the second coil is connected with a first end of a switch, and wherein a second end of the switch is connected with the second end of the first coil. ### Claim 5 (depends on 4) The electronic device of claim 4, wherein the processor is configured to: control the switch to switch on to connect the first coil and the second coil in parallel with the magnetic field control circuit, or control the switch to switch off to form an open circuit between the second end of the first coil and the second end of the second coil. ### Claim 6 (depends on 1) The electronic device of claim 1, further comprising a communication module, and wherein the processor is further configured to: obtain information indicating a size of a coil of the external electronic device through the communication module, and control the magnetic field control circuit to transmit the power having the first characteristic through the first coil or transmit the power having the second characteristic through the first coil and the second coil connected in parallel, based on the information indicating the size of the coil of the external electronic device. ### Claim 7 (depends on 1) The electronic device of claim 1, wherein the designated frequency range is 100 kHz to 196 kHz or 110 kHz to 148 kHz. ### Claim 8 (depends on 2) The electronic device of claim 2, wherein the designated operating voltage range is 5V to 9V. ### Claim 9 (depends on 1) The electronic device of claim 1, wherein the processor is further configured to output a ping signal through the first coil and the second coil and identify external electronic device based on a response to the ping signal. ### Claim 10 A method for transmitting wireless power based on multiple coils in an electronic device, the method comprising: upon detecting an external electronic device to receive wireless power, transmitting power having a first characteristic to the external electronic device through a first coil by using a magnetic field control circuit; and upon transmitting the power having the first characteristic, maintaining transmission through the first coil based on a first operating frequency and a threshold operating frequency in a designated frequency range, or adjusting an operating voltage based on the first operating frequency and the threshold operating frequency and transmitting power having a second characteristic through the first coil and the second coil by using the magnetic field control circuit based on a first frequency varied in response to the adjusted operating voltage.