WO2023033485A1 - 외부 물체를 감지하는 무선 전력 송신 장치 및 그 방법 - Google Patents
외부 물체를 감지하는 무선 전력 송신 장치 및 그 방법 Download PDFInfo
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- WO2023033485A1 WO2023033485A1 PCT/KR2022/012899 KR2022012899W WO2023033485A1 WO 2023033485 A1 WO2023033485 A1 WO 2023033485A1 KR 2022012899 W KR2022012899 W KR 2022012899W WO 2023033485 A1 WO2023033485 A1 WO 2023033485A1
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- resonator
- point
- slot
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- power
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
Definitions
- the present disclosure relates to a wireless power transmission device and method for detecting an external object.
- Wireless power transmission technology is a method of transmitting power using an electromagnetic field induced in a coil.
- An electromagnetic field is generated by applying a current to a transmitting coil, and an induced current is formed in a receiving coil by the generated electromagnetic field to supply electrical energy. there is.
- the wireless power transmitter receives direct current (DC) power, converts the received direct current (DC) power into alternating current (AC) power, and generates an electromagnetic field through a resonator to deliver power to the wireless power receiver.
- DC direct current
- AC alternating current
- the wireless power transmission efficiency of the wireless power transmission device may be reduced or the wireless power transmission device may be damaged due to the foreign substance.
- an object of the present invention is to provide a wireless power transmission device and method for detecting an external object.
- an external object eg, a foreign substance
- the type of the detected external object may be determined.
- an electronic device may include a resonator having a first slot, a first inverter connected to a first point and a second point on the first slot of the resonator, and set to provide power to the first slot for detecting a foreign object - the first
- the first point and the second point on one slot are located on opposite sides with the first slot interposed therebetween -, at a third point and a fourth point of the resonator different from the first point and the second point.
- a second inverter connected to the resonator and configured to transmit power to the resonator, and a controller, wherein the controller controls the first inverter to apply a first power having a first frequency to the first slot; While the first power is applied to the first slot, at least one first impedance with respect to the first point and the second point is checked, and based on the at least one first impedance, a device adjacent to the electronic device is detected.
- a second frequency having a second frequency different from the first frequency to wirelessly provide power to an external wireless power receiver during a period at least partially overlapping a period in which an external object is identified and the first power is applied to the resonator. 2 may be configured to control the second inverter to apply power to the third point and the fourth point.
- a resonator included in an electronic device includes a first slot, the resonator is formed in a loop shape, the first slot is formed in a shape having a first length in a loop direction of the resonator, and the electronic device is configured to detect foreign matter.
- a first inverter coupled to a first point and a second point of the resonator to provide a first power having a first frequency to the resonator, wherein the first point and the second point are connected to the first slot Located on the opposite side with a in-between-, based on at least one first impedance for the first point and the second point, which is checked while the first power is applied to the resonator, to the electronic device
- a second frequency having a second frequency different from the first frequency in order to identify an adjacent external object and to provide power to an external wireless power receiver during a period at least partially overlapping with a period in which the first power is applied to the resonator.
- 2 may be set to control a second inverter connected to a third point and a fourth point of the resonator different from the first point and the second point to apply power.
- a wireless power transmission device and method for detecting an external object may be provided. Accordingly, by detecting an external object existing on the wireless power transmission device, it is possible to prevent reduction in wireless power transmission efficiency and damage to the wireless power transmission device.
- an external object existing on the wireless power transmission device may be detected, and transmission of wireless power may be stopped when the detected external object is not a wireless power transmission target.
- FIG. 1 shows a block diagram of an electronic device and a wireless power receiver according to an embodiment of the present disclosure.
- FIG. 2 shows a configuration diagram of a wireless charging system according to an embodiment of the present disclosure.
- FIG. 3 is a block diagram illustrating a wireless charging system according to an embodiment of the present disclosure.
- FIG. 4A shows a block diagram of an electronic device, according to an embodiment of the present disclosure.
- FIG. 4B shows a block diagram of an electronic device, according to an embodiment of the present disclosure.
- FIG. 5 is a flowchart illustrating an operation of an electronic device according to an embodiment of the present disclosure.
- FIG. 6 is a diagram illustrating a resonator included in an electronic device according to an embodiment of the present disclosure.
- FIG. 7 is a diagram illustrating a resonator included in an electronic device according to an embodiment of the present disclosure.
- FIG. 8 is a diagram for explaining an operation of an electronic device according to an embodiment of the present disclosure.
- 9A is a diagram for explaining an operation of an electronic device according to an embodiment of the present disclosure.
- 9B is a diagram for explaining an operation of an electronic device according to an embodiment of the present disclosure.
- FIG. 10 is a diagram for explaining an operation of an electronic device according to an embodiment of the present disclosure.
- FIG. 11 is a diagram for explaining an operation of an electronic device according to an embodiment of the present disclosure.
- 12A is a diagram for explaining an operation of an electronic device according to an embodiment of the present disclosure.
- 12B is a diagram for explaining an operation of an electronic device according to an embodiment of the present disclosure.
- FIG. 13 is a flowchart illustrating an operation of an electronic device according to an embodiment of the present disclosure.
- FIG. 14 is a diagram for explaining an operation of an electronic device according to an embodiment of the present disclosure.
- 15 is a flowchart illustrating an operation of an electronic device according to an embodiment of the present disclosure.
- 16 is a diagram illustrating a resonator included in an electronic device according to an embodiment of the present disclosure.
- 17 is a diagram illustrating a resonator included in an electronic device according to an embodiment of the present disclosure.
- 18 is a diagram for explaining an operation of an electronic device according to an embodiment of the present disclosure.
- 19 is a diagram for explaining an operation of an electronic device according to an embodiment of the present disclosure.
- 20 is a diagram for explaining an operation of an electronic device according to an embodiment of the present disclosure.
- 21 is a diagram for explaining an operation of an electronic device according to an embodiment of the present disclosure.
- 22 is a diagram for explaining an operation of an electronic device according to an embodiment of the present disclosure.
- 23 is a diagram for explaining an operation of an electronic device according to an embodiment of the present disclosure.
- 24 is a diagram for explaining an operation of an electronic device according to an embodiment of the present disclosure.
- 25 is a diagram illustrating a resonator included in an electronic device according to an embodiment of the present disclosure.
- 26 shows a block diagram of an electronic device, according to an embodiment of the present disclosure.
- FIG. 27 shows a block diagram of an electronic device, according to an embodiment of the present disclosure.
- FIG. 1 shows a block diagram of an electronic device and a wireless power receiver according to an embodiment of the present disclosure.
- an electronic device 101 may wirelessly transmit power 103 to a wireless power receiver 195 .
- the electronic device 101 may transmit power 103 according to an induction method.
- the electronic device 101 includes, for example, a power source, a DC-AC conversion circuit, an amplifier circuit, an impedance matching circuit, at least one capacitor, at least one coil, and communication.
- a modulation/demodulation circuit may be included.
- At least one capacitor may constitute a resonant circuit together with at least one coil.
- the electronic device 101 may be implemented in a manner defined in a wireless power consortium (WPC) standard (or Qi standard).
- WPC wireless power consortium
- the electronic device 101 may transmit power 103 according to a resonance method.
- the electronic device 101 includes, for example, a power source, a DC-AC conversion circuit, an amplifier circuit, an impedance matching circuit, at least one capacitor, at least one coil, and an out-of-band communication circuit. (eg, a bluetooth low energy (BLE) communication circuit) and the like. At least one capacitor and at least one coil may constitute a resonant circuit.
- the electronic device 101 may be implemented in a manner defined in the Alliance for Wireless Power (A4WP) standard (or air fuel alliance (AFA) standard).
- the electronic device 101 may include a coil capable of generating an induced magnetic field when a current flows according to a resonance method or an induction method.
- a process of generating an induced magnetic field by the electronic device 101 may be expressed as the electronic device 101 transmitting power 103 wirelessly.
- the wireless power receiver 195 may include a coil in which induced electromotive force is generated by a magnetic field whose size changes with time formed around it.
- a process of generating an induced electromotive force through a coil may be expressed as that the wireless power receiver 195 wirelessly receives the power 103 .
- the electronic device 101 is a method defined in the airFuel inductive (eg, PMA (power matters alliance)) or airfuel resonant (eg, rezence) standard, or defined in the Qi standard, as a standard for wireless power transmission. It can be implemented in a way that
- the electronic device 101 may communicate with the wireless power receiver 195 .
- the electronic device 101 may communicate with the wireless power receiver 195 according to an in-band method.
- the electronic device 101 may perform modulation according to, for example, a frequency shift keying (FSK) modulation method for data to be transmitted, and the wireless power receiver 195 may perform modulation according to an amplitude shift keying (ASK) modulation method. Modulation can be performed accordingly.
- the electronic device 101 and/or the wireless power receiver 195 may determine data transmitted from the other device based on the frequency and/or amplitude of the current, voltage, or power of the coil.
- FSK frequency shift keying
- ASK amplitude shift keying
- An operation of performing modulation based on the ASK modulation scheme and/or the FSK modulation scheme may be understood as an operation of transmitting data according to an in-band communication scheme.
- An operation of determining data to be transmitted from an external device by performing demodulation based on the magnitude of frequency and/or amplitude of current, voltage or power of a coil is an operation of receiving data according to an in-band communication method.
- the electronic device 101 may communicate with the wireless power receiver 195 according to an out-of-band method.
- the electronic device 101 or the wireless power receiver 195 may transmit and receive data using a communication circuit (eg, a BLE communication module) provided separately from a coil or patch antenna.
- a communication circuit eg, a BLE communication module
- the electronic device 101 or the wireless power receiver 195 performing a specific operation is various hardware included in the electronic device 101 or the wireless power receiver 195, for example, a processor (eg For example, it may mean that a control circuit such as a transmission integrated circuit (IC) and/or a micro controlling unit (MCU), or a coil performs a specific operation.
- a processor eg
- the control circuit such as a transmission integrated circuit (IC) and/or a micro controlling unit (MCU), or a coil performs a specific operation.
- the processor may control other hardware to perform the specific operation.
- the electronic device 101 or the wireless power receiver 195 when the electronic device 101 or the wireless power receiver 195 performs a specific operation, the specific operation stored in a storage circuit (eg, memory) of the electronic device 101 or the wireless power receiver 195 It may also mean causing a processor or other hardware to perform a particular action as at least one instruction to perform is executed.
- a storage circuit eg, memory
- FIG. 2 shows a configuration diagram of a wireless charging system according to an embodiment of the present disclosure.
- a wireless charging system may include an electronic device 101 and at least one wireless power receiver 195-1, 195-2, and 195-3.
- Each of the at least one wireless power receiver 195 - 1 , 195 - 2 , and 195 - 3 may be an electronic device of the same type as the wireless power receiver 195 .
- the electronic device 101 may be a device that wirelessly transmits power based on power supplied from a charger (eg, TA, travel adapter).
- the electronic device 101 is a device including a wireless power transmission function, and may be implemented as, for example, a smart phone, and the implementation form is not limited.
- the wireless power receiver 195 may be an electronic device such as a smart phone or a wearable device, and there is no limitation in its implementation.
- the electronic device 101 may include a base housing 210 and at least one resonator 230 or 240 .
- at least one of the wireless power receivers 195 - 1 , 195 - 2 , and 195 - 3 may be freely mounted around the electronic device 101 .
- a coordinate axis indicated in the drawings of this document may indicate a direction in which a certain element is directed.
- the coordinate axis here may be a coordinate axis (X-axis, Y-axis, Z-axis) in a 3-dimensional space.
- the X axis may be an axis parallel to the horizontal direction (or length direction) of the electronic device 101
- the Y axis may be an axis parallel to the vertical direction (or width direction) of the electronic device 101
- the Z-axis may be an axis parallel to the height direction of the electronic device 101 .
- the coupling relationship of each component may be described with reference to various drawings disclosed in this document and coordinate axes included therein.
- the shape of the electronic device 101 disclosed in FIG. 2 is exemplary, and the shape of the electronic device 101 is not limited.
- the base housing 210 is a part forming the exterior of the electronic device 101 together with at least one of the resonator housings 231 and 241, and various electronic components included in the electronic device 101 are included in the inner space of the base housing 210. can accommodate them. According to an embodiment, the various electronic components may be integrated and accommodated inside a system module of the electronic device 101 .
- the shape of the base housing 210 of the electronic device 101 according to various embodiments of the present disclosure is not limited to any specific embodiment. For example, in the embodiment shown in FIG. 2 , the base housing 210 may have a cylindrical cylindrical shape as a whole, but is not necessarily limited thereto. Various other embodiments may be applied, such as a polyhedron including a hexahedron.
- the electronic device 101 may include resonators 230 and 240 .
- the resonators 230 and 240 include a first resonator 230 including at least one coil and at least one capacitor and surrounded by a first resonator housing 231, at least one coil and at least one capacitor, and It may include a second resonator 240 surrounded by two resonator housings 241 .
- the resonators 230 and 240 may be ring-shaped resonators having a hollow inside.
- the first resonator 230 and the second resonator 240 have the same size, shape, internal configuration (eg, internal configuration including at least one capacitor and at least one coil) of the housings 231 and 241, and the like. or otherwise formed.
- the base housing 210 may form a structure capable of supporting the first resonator housing 231 and the second resonator housing 241 .
- the first resonator housing 231 may be placed on the base housing 210 in a horizontal direction
- the second resonator housing 241 may be placed on the base housing 210 in a vertical direction.
- the first resonator housing 231 may be coupled to the cylindrical outer periphery of the base housing 210 in a laid-down state
- the second resonator housing 241 is the central portion of the upper surface 211 of the base housing 210 It can be built by being coupled to the groove 212 formed in.
- the first resonator 230 and the second resonator 240 are formed to be interchangeable, and cross arrangement may be possible.
- the second resonator housing 241 may be mounted on the base housing 210 at a position where the first resonator housing 231 is mounted, and the first resonator may be mounted on a position where the second resonator housing 241 is mounted.
- the housing 231 may be mounted.
- the first resonator housing 231 is mounted horizontally with respect to the base housing 210 (or with respect to the ground), and the second resonator housing 241 is with respect to the base housing 210 (or with respect to the ground) It should be noted that the description is centered on the vertically mounted embodiment, but is not limited thereto.
- the first resonator 230 mounted horizontally with respect to the base housing 210 is mainly coupled to wireless power receivers placed on the floor near the electronic device 101 to transmit wireless power. can do.
- the second resonator 240 mounted vertically with respect to the base housing 210 is erected near the electronic device 101, or wireless power reception disposed at a predetermined distance from the floor in the height direction of the electronic device 101. It is mainly coupled to the devices to transmit wireless power.
- wireless power is provided to wireless power receivers built near the electronic device 101 or disposed at a predetermined distance from the floor using the first resonator 230.
- wireless power receivers placed on the floor it is also possible to transmit wireless power to wireless power receivers placed on the floor using the second resonator 240 .
- charging the wireless power receivers placed on the floor using the first resonator 230 and charging the wireless power receivers erected using the second resonator 230 or placed at a predetermined distance from the floor is transmission. From an efficiency point of view, it may be more advantageous.
- the first resonator housing 231 may be formed so that the entire portion (eg, the circumferential portion) of the first resonator housing 231 is exposed to the outside of the base housing 210, but the second resonator housing 231 may be exposed.
- the resonator housing 241 may be formed such that at least a portion is inserted into the base housing 210 and the remaining portion is exposed to the outside. Since at least a portion of the second resonator housing 241 is inserted into the base housing 210, the second resonator housing 241 can be stably installed.
- shapes related to the base housing 210, the first resonator housing 231, and the second resonator housing 241 are not limited thereto and may vary.
- the first resonator housing 231 and the second resonator housing 241 may be detachably coupled from the base housing 210 . Any one of the first resonator housing 231 or the second resonator housing 241 is spaced apart from the base housing 210 of the electronic device 101 by a predetermined distance, and the spaced resonator is used as a repeater so that the electronic device 101 ) may expand the wireless power charging range.
- the electronic device 101 may include a power supply unit 250 in a base housing 210 .
- the power supply unit 250 may be coupled electromagnetically with the resonators 230 and 240, and the resonators 230 and 240 receiving power through coupling with the power supply unit 250 may be used for wireless power receiving devices. It can be output or transmitted as power in the form of an electromagnetic field.
- a power supply unit 250 is disposed on one side of the base housing 210 to generate an electromagnetic field, and the generated electromagnetic field is coupled to the first resonator 230 and the second resonator 240 simultaneously or selectively can make it
- the power supply unit 250 may be composed of a series/parallel connection of a coil having a loop of at least 1 turn and a capacitor.
- the power feeding unit 250 is disposed in the base housing 210 and at least a portion of the power feeding unit 250 may be exposed to the outside of the base housing 210 .
- the power supply unit 250 may be disposed at various angles at which coupling with the resonators 230 and 240 may occur, and may be provided in plurality according to embodiments.
- power output for at least one wireless power receiver 195-1, 195-2, 195-3 using the electronic device 101 according to the various embodiments described above Alternatively, it may perform a transmission function.
- the at least one wireless power receiver 195-1, 195-2, 195- 3 various display methods (eg, light-emitting diode (LED) light, sound, text message, voice, etc.) can be provided so that the charging state monitoring information can be intuitively recognized.
- various display methods eg, light-emitting diode (LED) light, sound, text message, voice, etc.
- the charging state monitoring information includes at least one of voltage information, current information, state of charge (SOC) information, and state of health (SOH) information indicating whether charging is possible or not. can do.
- a power state of the wireless power receiver may be checked through voltage information or current information.
- the power state may mean the amount of electrical energy remaining until the batteries of the wireless power receivers 195-1, 195-2, and 195-3 are discharged.
- the power state may be expressed as a percentage such as 0%, 10%, 50%, and 100%.
- the state of charge (SOC) may represent whether the wireless power receivers 195-1, 195-2, and 195-3 are being charged or not.
- state information (SOH) may also be displayed as to whether the wireless power receivers 195-1, 195-2, and 195-3 can be charged or not.
- the charge state monitoring information is not limited thereto.
- the electronic device 101 may obtain location information about at least one wireless power receiver 195-1, 195-2, or 195-3 located around 360 degrees.
- the above-described phased array coil or an ultra-wideband (UWB) radar sensor may be used.
- a phased array coil and a UWB radar sensor may be used together to further increase the accuracy of location information.
- Charge state monitoring information may be acquired through a short-range communication module of the electronic device 101 .
- the flow of the method of displaying information about may be as follows.
- the electronic device 101 transmits a load detection beacon and/or a power beacon, and feedbacks various information including voltage/wattage information from the wireless power receiver in response to the load detection beacon and/or power beacon.
- Information received as feedback from the wireless power receiver may be mapped to information about the wireless power receiver obtained through the short-range communication module.
- a unique identifier (ID) for at least one wireless power receiver 195-1, 195-2, or 195-3 may be identified using a short-range communication module included in the electronic device 101.
- ID unique identifier
- a pairing operation may be performed with respect to a wireless power receiver having an authenticated ID.
- the paired electronic device 101 and the wireless power receiver may transmit and receive various data about, for example, a power state and a charging state. Further, location information on at least one wireless power receiver 195-1, 195-2, and 195-3 disposed around the electronic device 101 may be roughly acquired.
- the electronic device 101 uses a resonance method as a power transmission method for at least one wireless power receiver 195-1, 195-2, and 195-3 located 360 degrees around the electronic device 101. It may be adopted (eg, application of the first resonator 230 and the second resonator 240 of FIG. 2 ). Assuming that the electronic device 101 is fixed at a certain location, power can be transmitted only when the wireless power receivers 195-1, 195-2, and 195-3 are placed within a designated distance from the electronic device 101. . For example, an effective distance for wireless power transmission between the wireless power transmitter 100 and the wireless power receivers 195-1, 195-2, and 195-3 may be 50 cm or less, preferably 30 cm or less.
- first effective distance A shows a first effective distance A as an example of an effective distance for wireless power transmission.
- the first wireless power receiver 195-1 and the second wireless power receiver 195-2 have an effective distance for wireless power transmission (eg, a first effective distance A )), the charging operation can be performed normally.
- the third wireless power receiver 195-3 is disposed outside the effective distance, charging may not be performed or charging efficiency may be very low.
- FIG. 3 is a block diagram illustrating a wireless charging system according to an embodiment of the present disclosure.
- a wireless charging system may include an electronic device 101 and a wireless power receiver 195 .
- the wireless power receiver 195 When the wireless power receiver 195 is mounted on the electronic device 101, the electronic device 101 can wirelessly supply power to the wireless power receiver 195.
- the electronic device 101 may include a power transmission circuit 311 , a control circuit 312 , a communication circuit 313 , or a sensing circuit 314 .
- the power transmission circuit 311 includes a power adapter 311a that receives power (or power) from the outside and appropriately converts the voltage of the input power, and a power generation circuit 311b that generates power. ), or a matching circuit 311c that improves efficiency between the transmitting coil 311L and the receiving coil 321L.
- the power transmission circuit 311 includes a power adapter 311a to transmit power to at least one wireless power receiver (eg, a first wireless power receiver and a second wireless power receiver); At least one of a power generating circuit 311b, a transmission coil 311L, or a matching circuit 311c may be included.
- a power adapter 311a to transmit power to at least one wireless power receiver (eg, a first wireless power receiver and a second wireless power receiver);
- At least one of a power generating circuit 311b, a transmission coil 311L, or a matching circuit 311c may be included.
- control circuit 312 may perform overall control of the electronic device 101, generate various messages (eg, instructions) required for wireless power transmission, and transmit them to the communication circuit 313.
- control circuit 312 may calculate power (or amount of power) to be transmitted to the wireless power receiver 195 based on information received from the communication circuit 313 .
- control circuit 312 may control the power transmission circuit 311 so that power generated by the transmission coil 311L is transmitted to the wireless power receiver 195 .
- the communication circuit 313 may include at least one of a first communication circuit 313a and a second communication circuit 313b.
- the first communication circuit 313a is connected to the first communication circuit 323a of the wireless power receiver 195 using, for example, a frequency identical to or adjacent to a frequency used by the transmission coil 311L for power transmission.
- - Can communicate based on in-band (IB) communication method.
- the first communication circuit 313a may communicate with the first communication circuit 323a of the wireless power receiver 195 by using the transmission coil 311L. Data (or communication signals) generated by the first communication circuit 313a may be transmitted using the transmission coil 311L.
- the first communication circuit 313a may transfer data to the wireless power receiver 195 using a frequency shift keying (FSK) modulation technique.
- FSK frequency shift keying
- the first communication circuit 313a communicates with the first communication circuit 323a of the wireless power receiver 195 by changing the frequency of the power signal transmitted through the transmission coil 311L. can do.
- the first communication circuit 313a may communicate with the first communication circuit 323a of the wireless power receiver 195 by allowing data to be included in the power signal generated by the power generation circuit 311b.
- the first communication circuit 313a may perform modulation by increasing or decreasing the frequency of the power transmission signal.
- the wireless power receiver 195 may check data from the electronic device 101 by performing demodulation based on the frequency of the signal measured by the receiving coil 3
- the second communication circuit 313b uses, for example, a frequency different from the frequency used by the transmission coil 311L for power transmission, and out-of-order with the second communication circuit 323b of the wireless power receiver 195.
- the second communication circuit 313b performs second communication using any one of various short-range communication methods such as Bluetooth, Bluetooth low energy (BLE), Wi-Fi, or near field communication (NFC).
- Information related to the charge state from the circuit 323b eg, voltage value after rectifier, rectified voltage value (eg, Vrect) information, current information flowing in the coil 321L or rectifier circuit 321b (eg, Iout), various packets, authentication information and/or messages).
- the sensing circuit 314 may include one or more sensors, and may detect at least one state of the power transmission device 301 using the one or more sensors.
- the sensing circuit 314 may include at least one of a temperature sensor, a motion sensor, a magnetic field sensor (hall sensor), or a current (or voltage) sensor, and the electronic device ( 101), the motion state of the electronic device 101 can be detected using a motion sensor, and whether or not it is coupled to the wireless power receiver 195 can be detected using a magnetic field sensor.
- a state of an output signal of the electronic device 101 for example, a current level, a voltage level, and/or a power level may be sensed using a current (or voltage) sensor.
- the current (or voltage) sensor may measure a signal from the power transmission circuit 311 .
- the current (or voltage) sensor may measure a signal in at least a partial region of the matching circuit 311c or the power generation circuit 311b.
- the current (or voltage sensor) may include a circuit for measuring a signal at a front end of the coil 311L.
- the sensing circuit 314 may be a circuit for foreign object detection (eg, foreign object detection (FOD)).
- FOD foreign object detection
- the wireless power receiving device 195 includes a power receiving circuit 321, a control circuit 322, a communication circuit 323, sensors 324, a display 325, or a sensing circuit 326. ) may be included.
- the sensors 324 may include a sensing circuit 326 .
- the power receiving circuit 321 includes a receiving coil 321L that wirelessly receives power from the electronic device 101, an Rx IC 327, and a charging circuit 321d (eg, power management (PMIC)). IC), DCDC converter, switched capacitor, or voltage divider), or a battery 321e (eg, battery 189).
- the Rx IC 327 includes a matching circuit 321a coupled to the receiving coil 321L, a rectifying circuit 321b to rectify the received AC power to DC, or a regulating circuit to adjust the charging voltage (e.g., A low dropout (LDO) (321c) may be included.
- LDO low dropout
- control circuit 322 may perform overall control of the wireless power receiver 195, generate various messages required for wireless power reception, and transmit them to the communication circuit 323.
- the communication circuit 323 may include at least one of a first communication circuit 323a and a second communication circuit 323b.
- the first communication circuit 323a may communicate with the electronic device 101 through the receiving coil 321L.
- the first communication circuit 323a may communicate with the first communication circuit 313a of the electronic device 101 by using the receiving coil 321L. Data (or communication signals) generated by the first communication circuit 323a may be transmitted using the receiving coil 321L.
- the first communication circuit 323a may transmit data to the electronic device 101 using amplitude shift keying (ASK) modulation. For example, the first communication circuit 323a may change the load of the electronic device 101 according to the modulation method. Accordingly, at least one of voltage, current, or power measured by the transmission coil 311L may be changed.
- the first communication circuit 313a of the electronic device 101 may check data by the wireless power receiver 195 by demodulating the size change.
- the second communication circuit 323b may communicate with the electronic device 101 using any one of various short-range communication methods such as Bluetooth, BLE, Wi-Fi, or NFC.
- packets, information, or data transmitted and received between the electronic device 101 and the wireless power receiver 195 may use at least one of the first communication circuit 323a or the second communication circuit 323b.
- the sensors 324 may include at least some of a current/voltage sensor, a temperature sensor, an illuminance sensor, or an acceleration sensor. In one embodiment, sensors 324 may be the same as or separate components from sensor module 1376 of FIG. 13 .
- the display 325 may display various types of display information required for wireless power transmission and reception.
- the sensing circuit 326 may sense the electronic device 101 by detecting a search signal or received power from the electronic device 101 .
- the sensing circuit 326 changes the signal of the input/output terminal of the coil 321L, the matching circuit 321a, or the rectifier circuit 321b by the coil 321L signal generated by the signal output from the electronic device 101. can detect According to various embodiments, the sensing circuit 326 may be included in the receiving circuit 321 .
- 4A shows a block diagram of an electronic device, according to an embodiment of the present disclosure.
- 4B shows a block diagram of an electronic device, according to an embodiment of the present disclosure.
- an electronic device 101 includes a controller 430, a first inverter 410, a second inverter 420, a resonator 440, and a sensor 450. can do.
- an inverter may receive direct current (DC) power from a power source (not shown).
- a power source (not shown) that provides direct current (DC) power to the first inverter 410 and a power source (not shown) that provides direct current (DC) power to the second inverter 420 are the same. It may or may not be different.
- provision of direct current (DC) power may be understood as at least one of application of a direct current voltage or application of a direct current.
- the power source (not shown) may receive power from at least one of a direct current power source and an alternating current (AC) power source, and output direct current power.
- a power source may be controlled by the controller 430, and the controller 430 provides an inverter (eg, the first inverter 410 or the second inverter 420) based on the set output level.
- a power source (not shown) may be controlled to provide power.
- an inverter may output AC power using DC power received from a power source (not shown). there is.
- the output of AC power may be understood as at least one of application of an AC voltage or application of an AC current.
- An inverter eg, the first inverter 410 or the second inverter 420
- the inverter may be controlled by the controller 430, and the controller 430 supplies power to the resonator 440 based on the set output level.
- An inverter eg, the first inverter 410 or the second inverter 420
- An inverter may control at least one of a width, a duty cycle, or a power level of an output pulse.
- the controller 430 may control an output level (eg, driving voltage VDD of an inverter) from a power source (not shown).
- the resonator 440 may transmit wireless power to the outside based on the AC power received from the inverter (eg, the second inverter 420).
- the resonator 440 may be the first resonator 230 or the second resonator 240 of FIG. 2 .
- the resonator 440 may transmit wireless power like the transmitting coil 311L of FIG. 3 .
- the resonator 440 may include or be the transmission coil 311L of FIG. 3 .
- the resonator 440 may include at least one slot (eg, slot 441).
- the expression including a slot may mean, for example, that a slot is formed in a material constituting the resonator 440, and at least one slot included in the resonator 440 (eg, the slot 441 )) will be described with reference to FIGS. 6, 7, 16, 17, and 25.
- the resonator 440 receives AC power from an inverter (eg, the first inverter 410), an electric field formed by at least one slot (eg, the slot 441)
- An external object adjacent to the electronic device 101 may be identified based on (or a magnetic field).
- the controller 430 may identify an external object adjacent to the electronic device 101 using the resonator 440 .
- the slot 441 may mean an empty space formed in the resonator 440 .
- one region of the resonator 440 in which the slot 441 is formed may mean a boundary region between the resonator 440 and an empty space (eg, the slot 441) formed in the resonator 440. there is.
- at least one point included in one area of the resonator 440 in which the slot 441 is formed refers to the resonator 440 and an empty space formed in the resonator 440 (eg, the slot 441). It may mean at least one point included in the boundary area of .
- a certain component is connected to the slot 441 means that a certain component is connected to at least one point among at least one point included in a region of the resonator 440 in which the slot 441 is formed.
- applying power to the slot 441 may mean that power is applied to at least one point included in a region of the resonator 440 in which the slot 441 is formed.
- checking the impedance of the slot 441 may mean checking the impedance of at least one point included in a region of the resonator 440 in which the slot 441 is formed.
- the sensor 450 may sense at least one of voltage, current, power, or impedance applied to the resonator 440 .
- the sensor 450 may sense the impedance of at least one point of the resonator 440 .
- FIG. 4A is shown as including one sensor (eg, sensor 450 ), sensor 450 may include at least one sensor (eg, a first sensor, and/or a second sensor). can include
- one sensor eg, sensor 450
- the first sensor performs sensing on at least one point (eg, at least one first point) of the resonator 440
- the second sensor included in the sensor 450 performs sensing on at least one other point of the resonator 440. Sensing may be performed on one point (eg, at least one second point).
- the controller 430 may sense at least one of voltage, current, power, or impedance applied to at least one point of the resonator 440 using the sensor 450 .
- the controller 430 may be the control circuit 312 of FIG. 3 .
- the controller 430 may control the first inverter 410 and/or the second inverter 420 to apply power to at least one point of the resonator 440 .
- the controller 430 may control the first inverter 410 to apply the first power to the resonator 440 .
- the controller 430 may control the second inverter 420 to apply the second power to the resonator 440 .
- the controller 430 controls the first inverter 410 connected to the first point and the second point of the resonator 440 to apply a first power having a first frequency to the resonator 440 . can do.
- the first inverter may be connected to a first point and a second point of the resonator 440, and the first point and the second point may be located on opposite sides with the slot 441 interposed therebetween.
- the controller 430 determines the impedance of the first point and the second point of the resonator 440, to which the first inverter 410 is connected, to the sensor 450 (for example, the sensor 450). It can be confirmed using the first sensor included in).
- the controller 430 checking the impedance of the slot 441 means that the controller 430 determines the first and second points of the resonator 440 located on opposite sides with the slot 441 interposed therebetween.
- the controller 430 is configured to apply a second power having a second frequency different from the first frequency to the resonator 440 , at least different from the first and second points of the resonator 440 .
- the second inverter 420 connected to one point may be controlled.
- the controller 430 determines the impedance of at least one point (eg, a third point and a fourth point) of the resonator 440 to which the second inverter 420 is connected, the sensor 450 ) (eg, the second sensor included in the sensor 450).
- the electronic device 101 includes a first inverter 410, a coupler 451, a converter 452, a phase detector 453, and a slot 441 (eg, , a slot 441 included in the resonator 440 of FIG. 4A).
- the sensor 450 of FIG. 4A may include the coupler 451, the converter 452, and the phase detector 453 of FIG. 4B.
- the coupler 451 may connect the first inverter 410 and the resonator 440 .
- the coupler 451 may be connected to the first inverter 410 .
- coupler 451 may be connected to resonator 440 .
- the coupler 451 may be connected to the slot 441 of the resonator 440 .
- that the coupler 451 is connected to the slot 441 means that the coupler 451 is connected to the first and second points of the resonator 440 located on opposite sides with the slot 441 interposed therebetween.
- coupler 451 may be connected to converter 452 .
- the coupler 451 may transfer at least a portion of power provided from the first inverter 410 to the resonator 440 (eg, the slot 441 of the resonator 440).
- the coupler 451 may transfer at least a portion of power provided from the first inverter 410 to the converter 452 .
- the coupler 451 may transfer at least a portion of power transmitted from the resonator 440 (eg, the slot 441 of the resonator 440) to the converter 452.
- the coupler 451 serves as a passage through which power is transferred between the first inverter 410, the resonator 440 (eg, the slot 441 of the resonator 440), and the transformer 452. can do.
- the converter 452 may receive power from the coupler 451 .
- converter 452 provides a first power (e.g., a first voltage or a first current) from coupler 451 (e.g., provided to coupler 451 from first inverter 410). at least a portion of the power) may be delivered.
- converter 452 may transmit a second power (e.g., a second voltage or a second current) from coupler 451 (e.g., to resonator 440 (e.g., At least a portion of power provided to the coupler 451 from the slot 441 may be transferred.
- the converter 452 may provide a signal obtained by converting power (eg, voltage and/or current) received from the coupler 451 to the phase detector 453 .
- the converter 452 converts the first power (eg, at least a portion of the power provided from the first inverter 410 to the coupler 451) to a phase detector (453).
- a second signal obtained by converting the second power eg, at least a portion of the power provided to the coupler 451 from the resonator 440 (eg, the slot 441 of the resonator 440)
- the phase detector (453 may provide a signal obtained by converting power (eg, voltage and/or current) received from the coupler 451 to the phase detector 453 .
- the converter 452 converts the first power (eg, at least a portion of the power provided from the first inverter 410 to the coupler 451) to a phase detector (453).
- a second signal obtained by converting the second power eg, at least a portion of the power provided
- the phase detector 453 may receive the converted signal from the converter 452 .
- the phase detector 453 may compare a plurality of converted signals transmitted from the converter 452 to detect a phase difference.
- the controller 430 may determine the first and second positions of the resonator 440 in the slot 441 of the resonator 440 (eg, located on opposite sides with the slot 441 therebetween). The first impedance at the point) can be identified, and the phase of the first impedance can be detected using the phase detector 453 .
- the controller 430 uses the phase detector 453 to convert at least a portion of the power provided to the coupler 451 from the first signal (eg, the first inverter 410) to the converter 452.
- At least a portion of the power provided to the coupler 451 from the second signal (e.g., the resonator 440 (e.g., the slot 441 of the resonator 440)) is converted to the converter 452. ) in the slot 441 of the resonator 440 (e.g., the first point and the second
- the phase of the impedance at the point can be detected.
- the controller 430 uses the sensor 450 (eg, the coupler 451, the converter 452, and the phase detector 453 included in the sensor 450) to detect at least one of the resonator 440.
- a method of detecting the impedance (or the phase of the impedance) for a point is exemplary, and is not limited thereto.
- the fact that the controller 430 uses the sensor 450 (or the phase detector 453) to check the phase of the impedance means that the controller 430 uses the sensor 450 (or the phase detector 453). It may mean checking the slope of the impedance by using
- the phase of the impedance can be defined as arctan(X/R).
- the slope of the impedance may be defined as X/R.
- the Q factor may be defined as X/R.
- FIG. 5 is a flowchart illustrating an operation of an electronic device according to an embodiment of the present disclosure.
- Figure 5 will be described with reference to Figures 4a, 4b, 6, and 7.
- 6 is a diagram illustrating a resonator included in an electronic device according to an embodiment of the present disclosure.
- 7 is a diagram illustrating a resonator included in an electronic device according to an embodiment of the present disclosure.
- a resonator included in the electronic device 101 may be configured as a plane.
- the resonator eg, the resonator 610 of FIG. 6 , the resonator 1610 of FIG. 16 , or the resonator 2510 of FIG. 25
- the resonator may be formed on a printed circuit board (PCB).
- a resonator included in the electronic device 101 may be formed three-dimensionally in space.
- the resonator eg, the resonator 710 of FIG. 7 or the resonator 1710 of FIG. 17
- the resonator may be formed in a donut shape.
- FIG. 6 eg, resonator 610
- FIG. 16 eg, resonator 1610
- FIG. 25 eg, resonator 2510 illustrates the resonator of FIG. 7 ( 710), the resonator 1710 of FIG. 17, or the resonator 2510 of FIG.
- the resonator 610 of FIG. 6 may be the resonator 710 of FIG. 7
- the resonator 1610 of FIG. 16 may be the resonator 1710 of FIG. 17
- the resonator eg, the resonator 710 of FIG. 7 or the resonator 1710 of FIG. 17
- the resonator may be formed in a donut shape filled with an inside.
- a resonator eg, resonator 710 in FIG. 7 or resonator 1710 in FIG. 17
- resonators e.g., resonator 610 of FIG. 6, resonator 710 of FIG. 7, resonator 1610 of FIG. 16, resonator 1710 of FIG. 17, and resonator 2510 of FIG. 25
- slots eg, slot 620 of FIG. 6 , slot 720 of FIG.
- slot 1620 of FIG. 16 , slot 1720 of FIG. 17 , and first slot 2520 of FIG. 25 ) , the second slot 2530) may be formed in the central portion of the resonator.
- a resonator eg, resonator 610 of FIG. 6 , resonator 710 of FIG. 7 , resonator 1610 of FIG. 16 , resonator 1710 of FIG. 17 , and resonator 2510 of FIG. 25 )
- slots eg, slot 620 of FIG. 6 , slot 720 of FIG. 7 , slot 1620 of FIG. 16 , slot 1720 of FIG. 17 , and first slot 2520 of FIG. 25 ).
- the second slot 2530 may be formed in an outer region of the resonator.
- resonators e.g., resonator 610 of FIG. 6, resonator 710 of FIG. 7, resonator 1610 of FIG. 16, resonator 1710 of FIG. 17, and resonator 2510 of FIG. 25
- slots eg, slot 620 of FIG. 6 , slot 720 of FIG. 7 , slot 1620 of FIG. 16 , slot 1720 of FIG. 17 , and first slot 2520 of FIG.
- the second slot 2530) being formed in the outer region of the resonator may mean that the distance between the slot of the resonator and the inner surface of the resonator is greater than the distance between the slot of the resonator and the outer surface of the resonator.
- the shape of the resonator e.g., resonator 610 in FIG. 6, resonator 710 in FIG. 7, resonator 1610 in FIG. 16, resonator 1710 in FIG. 17, and resonator 2510 in FIG. 25
- the shape of the resonator is not limited, and those skilled in the art can understand that the embodiments disclosed herein can be applied regardless of the shape of the resonator.
- the resonator 710 of FIG. 7 and the resonator 1710 of FIG. 17 are shown as having at least a portion of an angular shape, but this is exemplary, and the resonator is a loop in which a smooth circular surface is continuous. It may be formed into a shape.
- the electronic device 101 may include the resonator 610 of FIG. 6 .
- the resonator 610 may be formed in a loop shape.
- the resonator 610 may be formed in a loop shape starting from one end 612 of the resonator 610 and extending to the other end 611 .
- the resonator 610 may form an empty space of the first length 632 between one end 612 and the other end 611 of the resonator 610 .
- the resonator 610 may include a capacitor in a region between one end 612 and the other end 611 (eg, a region corresponding to an empty space of the first length 632 shown in FIG.
- the resonator 610 may be The position of the capacitor included in the resonator 610 is not limited.
- the resonator 610 is located in a region other than the region between the one end 612 and the other end 611 (eg, the region corresponding to the empty space of the first length 632 shown in FIG. 6). It may be connected to a capacitor disposed on.
- capacitors disposed in other regions are included in the resonator 610 .
- the resonator 610 may resonate by connecting a loop-shaped portion and a capacitor.
- the description of the shape, empty space, and capacitor of the above-mentioned resonator 610 is the resonator (eg, the resonator 710 of FIG. 7, the resonator 1610 of FIG. 16, and the resonator 1710 of FIG. 17) to be described later. ), and the resonator 2510 of FIG. 25).
- the resonator 610 may include a slot 620 .
- the slot 620 may be formed along the loop direction 631 of the resonator 610 .
- the slot 620 may be formed in a designated shape by a designated length 641 along a loop direction 631 of the resonator 610 .
- the slot 620 includes a first sub-slot 627 extending in a first direction (eg, a vertical direction in FIG. 6 ) and a second direction different from the first direction (eg, a vertical direction in FIG. 6 ). 6), and a third sub-slot 628 between the first sub-slot 627 and the second sub-slot 629.
- the third sub-slot 628 may have a curved shape according to the shape of the resonator 610 .
- the slot 620 includes a first sub-slot 627 having a first length 647, a second sub-slot 629 having a second length 649, and a third length 648.
- the branch may form a designated length 641 by including the third sub-slot 628 .
- the length (eg, designated length 641) of the slot (eg, slot 620) and the subslot (eg, first subslot) included in the slot (eg, slot 620) 627, the second sub-slot 629, and the third sub-slot 628 are applicable to the resonators of FIGS. 7, 16, 17, and 25. Those skilled in the art can understand that.
- FIG. 5 The embodiment of FIG. 5 described below is applicable not only to FIG. 6 but also to the resonators disclosed in FIGS. 16 and 25, and also various types of slots not disclosed in the drawings (eg, in the first direction (eg, Those skilled in the art can understand that the embodiment of FIG. 5 is applicable to a resonator including a slot extending in a longitudinal direction) in FIG. 6 .
- the electronic device 101 applies first power having a first frequency to a resonator.
- the first inverter 410 may be controlled to apply the voltage to the resonator 610 of FIG. 6 ).
- the first inverter 410 may be connected to a first point 621 and a second point 622 of the resonator 610 .
- the first point 621 and the second point 622 of the resonator 610 may be located on opposite sides with the slot 620 of the resonator 610 therebetween.
- the first point 621 and the second point 622 of the resonator 610 are close to one end 623 of the slot 620 and the other end 624 of the slot 620 of the slot 620. It may be located at a position spaced apart from one end 623 by a designated distance (eg, a first distance 642 ).
- the designated distance eg, the first distance 642
- the positions of the first point 621 and the second point 622 are illustrative, and the positions of the first point 621 and the second point 622 are not limited.
- the electronic device 101 may determine a first frequency of the first power applied by the first inverter 410 . A method of determining the frequency by the electronic device 101 will be described later.
- the frequency may be a designated value, and in this case, the operation of the electronic device 101 to determine the frequency may be omitted.
- the electronic device 101 determines a first point (eg, FIG. 621) and at least one impedance for the second point (eg, 622 of FIG. 6) may be checked. For example, referring to FIG. 6 , while the first power is applied to the resonator 610, the electronic device 101 periodically or continuously determines the first point 621 and the second point 622. At least one impedance can be identified. For example, at least one impedance may refer to an impedance confirmed at one point in time or a plurality of impedances measured in time series.
- the electronic device 101 provides at least one information for a first point (eg, 621 of FIG. 6 ) and a second point (eg, 622 of FIG. 6 ). Based on the impedance, an external object (eg, 1130 or 1140 of FIG. 11 ) adjacent to the electronic device 101 may be identified. For example, the electronic device 101 determines the slope (or phase) of at least one impedance with respect to a first point (eg, 621 of FIG. 6 ) and a second point (eg, 622 of FIG. 6 ). Based on , an external object (eg, 1130 or 1140 of FIG. 11 ) adjacent to the electronic device 101 may be identified.
- the electronic device 101 determines the slope (or phase) of at least one impedance with respect to a first point (eg, 621 of FIG. 6 ) and a second point (eg, 622 of FIG. 6 ).
- An external object (eg, 1130 or 1140 in FIG. 11 ) adjacent to the electronic device 101 may be identified based on the change in .
- the electronic device 101 determines the electronic device 101 based on impedances at a point in time with respect to a first point (eg, 621 of FIG. 6 ) and a second point (eg, 622 of FIG. 6 ). It is possible to check whether an external object (eg, 1130 or 1140 in FIG.
- FIG. 11 is disposed adjacent to the device 101 and/or identification information of the external object.
- a method of identifying an external object (eg, 1130 or 1140 of FIG. 11 ) adjacent to the electronic device 101 will be described later with reference to FIGS. 11, 12a, 12b, 13, and 14 .
- FIG. 8 is a diagram for explaining an operation of an electronic device according to an embodiment of the present disclosure.
- FIG. 8 is a graph of the reflection coefficient according to the frequency of power applied to a slot (eg, slot 620 of FIG. 6 ) included in a resonator (eg, 610 of FIG. 6 ) of the electronic device 101 shows
- a first slot (eg, slot 620 of FIG. 6 ) included in a resonator (eg, 610 of FIG. 6 ) of the electronic device 101
- the first power having a frequency eg, 1.13 GHz in FIG. 8
- the second power having a second frequency eg, 2.3 GHz in FIG. 8
- the first frequency eg, 1.13 GHz in FIG. 8
- the second frequency eg, 2.3 GHz in FIG. 8
- the resonator of the electronic device 101 eg, in FIG. 6 610) included in the slot (eg, the slot 620 of FIG.
- the electronic The device 101 may determine a frequency of power applied to a slot (eg, the slot 620 of FIG. 6 ).
- the electronic device 101 transmits power having a frequency designated based on the length and/or shape of the slot (eg, the slot 620 of FIG. 6 ), the slot (eg, the slot 620 of FIG. 6 ) It is possible to control the first inverter 410 to apply to the slot 620 of
- 9A is a diagram for explaining an operation of an electronic device according to an embodiment of the present disclosure.
- 9B is a diagram for explaining an operation of an electronic device according to an embodiment of the present disclosure.
- FIG. 10 is a diagram for explaining an operation of an electronic device according to an embodiment of the present disclosure.
- FIG. 9A shows a frequency assigned to a slot 920 (eg, the slot 620 of FIG. 6 ) included in the resonator 910 (eg, the resonator 610 of FIG. 6 ) of the electronic device 101 . It is a diagram showing the current distribution of the resonator 910 when power having is applied. For example, in (a) of FIG. 9A , first power having a first frequency (eg, 1.13 GHz in FIG. 8 ) is applied to a slot 920 included in a resonator 910 of the electronic device 101 . It is a diagram showing the current distribution of the resonator 910 when applied. For example, in (a) of FIG.
- the resonator 910 when power having a specified frequency is applied to the slot 920 included in the resonator 910 of the electronic device 101 in a manner similar to (a) and (b) of FIG. 9A, the resonator 910 ) voltage distribution can be obtained.
- the first point 621 and the second point 622 of the slot 620 included in the resonator 610 of FIG. 6 are the current distribution of the resonator 910 disclosed in FIG. 9A, and Based on the voltage distribution obtained in a similar way, it can be determined.
- current distribution and voltage distribution of the resonator 910 may be determined according to the length and shape of the slot (eg, 620 in FIG. 6 ), and accordingly, the first inverter 410 of the electronic device 101 A first point (eg, 621 of FIG. 6 ) and a second point (eg, 622 of FIG. 6 ) of the resonator (eg, 610 of FIG. 6 ) to be connected to may be determined.
- FIG. 9B is a diagram illustrating the distribution of an electric field formed around the resonator 910 when power having a specified frequency is applied to the slot 920 included in the resonator 910 of the electronic device 101.
- first power having a first frequency eg, 1.13 GHz in FIG. 8
- It is a diagram showing the distribution of the electric field formed around the resonator 910 when applied.
- the electric field has a minimum value near it, and it can be confirmed that the electric field has a maximum value near the second point 932 located at the center of the slot 920 .
- second power having a second frequency eg, 2.3 GHz in FIG. 8
- the electric field has a minimum value around the fifth point 945 located at a designated distance from the other end of the slot 920, and around the second point 942 and the fourth point 944 of the slot 920. It can be seen that the electric field has a maximum value.
- FIG. 10 is a diagram illustrating a distribution 1030 of an electric field formed around the resonator 1010 when power having a specified frequency is applied to the slot 1020 included in the resonator 1010 of the electronic device 101. am.
- the distribution 1030 of the electric field formed around the resonator 1010 may vary according to the length and/or shape of the slot 1020 included in the resonator 1010 .
- FIG. 11 is a diagram for explaining an operation of an electronic device according to an embodiment of the present disclosure.
- 12A is a diagram for explaining an operation of an electronic device according to an embodiment of the present disclosure.
- 12B is a diagram for explaining an operation of an electronic device according to an embodiment of the present disclosure.
- FIG. 11 illustrates a case where an external object (eg, 1130 or 1140) exists around the resonator 1110 included in the electronic device 101.
- the first external object 1130 in (a) of FIG. 11 may be a conductor.
- the second external object 1140 in (b) of FIG. 11 may be a human body.
- the electronic device 101 eg, the controller 430 of the electronic device 101
- 1130 or 1140 can be checked.
- the electronic device 101 determines the type of external object (eg, 1130 or 1140) and/or whether the external object (eg, 1130 or 1140) is getting closer or farther away from the electronic device 101. can determine whether there is
- FIG. 12A shows a change in the impedance value measured in the slot 1120 formed in the resonator 1110 as the distance between the external object (eg, 1130 or 1140) of FIG. 11 and the electronic device 101 changes.
- the electronic device 101 determines at least one impedance for two points (eg, 621 and 622 of FIG. 6 ) of the resonator 1110 located on opposite sides with the slot 1120 therebetween. 12a can be obtained if this can be confirmed and represented as a graph.
- R can be a value (R) and an imaginary value (X).
- X can be a value (R) and an imaginary value (X).
- Z is a value (R) and an imaginary value (X).
- the electronic device 101 may identify an external object (eg, 1130 or 1140) within a designated distance (eg, 10 mm in FIG. 12A) with reference to FIG. 12A.
- FIG. 12B shows a change in the reflection coefficient value measured at the slot 1120 formed in the resonator 1110 as the distance between the external object (eg, 1130 or 1140) of FIG. 11 and the electronic device 101 changes.
- the electronic device 101 has at least one reflection coefficient for two points (eg, 621 and 622 of FIG. 6 ) of the resonator 1110 located on opposite sides with the slot 1120 interposed therebetween. It can be confirmed, and if it is represented as a graph, Fig. 12b can be obtained.
- (a) of FIG. 12B shows a case in which first power having a first frequency (eg, 1.13 GHz in FIG.
- 1211 may be a reflection coefficient value when the first external object 1130 (eg, a conductor) moves near the electronic device 101 .
- 1212 may be a reflection coefficient value when the second external object 1140 (eg, a human body) moves near the electronic device 101.
- FIG. 12B shows a case in which second power having a second frequency (eg, 2.3 GHz in FIG. 8 ) is applied to the slot 1120 formed in the resonator 1110 .
- second power having a second frequency eg, 2.3 GHz in FIG. 8
- 12B , 1221 may be a reflection coefficient value when the first external object 1130 (eg, a conductor) moves near the electronic device 101 .
- 1222 may be a reflection coefficient value when the second external object 1140 (eg, a human body) moves near the electronic device 101.
- the electronic device 101 may determine whether an external object (eg, 1130 or 1140) moves away or approaches within a designated distance (eg, 10 mm in FIG. 12A). there is.
- FIG. 13 is a flowchart illustrating an operation of an electronic device according to an embodiment of the present disclosure. 13 will be described with reference to FIG. 14 .
- FIG. 14 is a diagram for explaining an operation of an electronic device according to an embodiment of the present disclosure.
- the electronic device 101 uses a sensor (eg, 450 in FIG. 4A ) (or a phase detector (eg, 453 in FIG.
- a first point eg, 621 of FIG. 6
- a resonator eg, 610 of FIG. 6
- a slot eg, 620 of FIG. 6
- an external location located around the electronic device 101
- the second external object 1140 eg, human body
- a reference distance eg, 30 mm in FIG. 14
- FIG. 14 shows a first point (eg, 621 of FIG. 6 ) of a resonator (eg, 610 of FIG. 6 ) in which a slot (eg, 620 of FIG. 6 ) is formed.
- a second point eg, 622 in FIG. 6
- an external location located around the electronic device 101
- a distance between an object eg, an external object (eg, 1130 or 1140) of FIG.
- the second external object 1140 eg, human body
- a reference distance eg, 30 mm
- the electronic device 101 determines at least one first slope (eg, X/R) of at least one impedance identified in operation 1301 and a reference value (eg, The first reference value or the second reference value) may be compared.
- the reference value may be a first reference value (eg, 420) that is a divergence point between 1411 and 1412 at or below the reference distance (eg, 30 mm).
- the reference value may be a second reference value (eg, 480) that is a divergence point between 1421 and 1422 at or below the reference distance (eg, 30 mm).
- the electronic device 101 determines that at least one first slope (eg, X/R) of at least one impedance identified in operation 1301 is a reference value (eg, An external object (eg, 1130 in FIG. 11 ) adjacent to the electronic device 101 may be identified as an object of the first type (eg, conductor) based on the first reference value or the second reference value or more.
- the electronic device 101 determines that at least one first slope (eg, X/R) of at least one impedance identified in operation 1301 is a reference value (eg, a first reference value or a second reference value).
- the object of the first type eg, conductor It may be determined that the distance between the external object and the electronic device 101 decreases.
- the electronic device 101 determines that at least one first slope (eg, X/R) of at least one impedance identified in operation 1301 is a reference value (eg, An external object (eg, 1140 in FIG. 11 ) adjacent to the electronic device 101 may be identified as a second type (eg, human body) object based on a value less than the first reference value or the second reference value.
- the electronic device 101 determines that at least one first slope (eg, X/R) of at least one impedance identified in operation 1301 is a reference value (eg, a first reference value or a second reference value).
- the second type (eg, human body) object It can be determined that the distance between the external object and the electronic device 101 increases.
- 15 is a flowchart illustrating an operation of an electronic device according to an embodiment of the present disclosure. 15 will be described with reference to FIGS. 4A and 6 .
- the electronic device 101 (eg, the controller 430 of the electronic device 101) operates a resonator (eg, 440 of FIG. 4A ).
- 610 of FIG. 6 has a first power (eg, a first frequency applied to the first point 621 and the second point 622 of the resonator 610 by the first inverter 410).
- first power eg, a first frequency applied to the first point 621 and the second point 622 of the resonator 610 by the first inverter 410.
- second power having a second frequency different from the first frequency is applied to at least one point (eg, 610 of FIG. 6 ) of the resonator.
- the second inverter 420 may be controlled to apply to 653 and 654 of FIG.
- the first inverter 410 may be connected to the first point 621 and the second point 622 of the resonator 610, and the second inverter 420 may be connected to the third point 621 of the resonator 610.
- Point 653 and fourth point 654 may be connected.
- the electronic device 101 applies first power (eg, sensing power) having a first frequency to the first point 621 and the second point 622 of the resonator 610 .
- first power eg, sensing power
- external objects eg, 1130 and 1140 in FIG. 11
- Wireless power may be transmitted to a wireless power receiver (eg, 195 of FIG.
- the first inverter 410 may be controlled to apply the first power having a first frequency different from the second frequency to the first point 621 and the second point 622 .
- an event eg, external When an object detection request event
- the first inverter ( 410) can be controlled.
- the electronic device 101 determines at least one impedance of the first point 621 and the second point 622 of the resonator 610. Based on , the external object (eg, 1140 of FIG. 11 ) may be identified as a second type (eg, human body) object.
- the external object eg, 1140 of FIG. 11
- the second type eg, human body
- the electronic device 101 selects an external object (eg, 1140 of FIG. 11 ) adjacent to the electronic device 101 as a second type (eg, human body) object. Based on the confirmation with , it is possible to stop providing the second power having the second frequency applied to the third point 653 and the fourth point 654 of the resonator 610 .
- an external object eg, 1140 of FIG. 11
- a second type eg, human body
- the electronic device 101 determines an external object (eg, 1130 of FIG. 11 ) adjacent to the electronic device 101 as an object of the first type (eg, a conductor). Based on this, provision of the second power (eg, power for charging) that was stopped may be resumed.
- provision of the second power eg, power for charging
- 16 is a diagram illustrating a resonator included in an electronic device according to an embodiment of the present disclosure.
- 17 is a diagram illustrating a resonator included in an electronic device according to an embodiment of the present disclosure.
- FIG. 16 is a top view of a resonator 1610 included in the electronic device 101 according to various embodiments.
- the resonator 1610 included in the electronic device 101 may be configured as a plane (eg, formed on a printed circuit board (PCB)).
- FIG. 16 may be a top view of the resonator 1610 configured as a plane.
- the resonator 1610 included in the electronic device 101 eg, the resonator 1710 of FIG. 17
- FIG. 16 may be a top view of a resonator 1610 (eg, the resonator 1710 of FIG. 17 ) formed three-dimensionally in space.
- Resonator 1610 (eg, resonator 1710 of FIG. 17 ) in a shape (eg, donut shape, and/or tube shape), and resonator 1610 (eg, resonator 1710 in FIG. 17 ). )), the position of the slot 1620 (eg, the slot 1720 of FIG. 17) has been described above along with the description of FIGS. 6 and 7.
- the slot 1620 (eg, the slot 1720 of FIG. 17 ) formed in the resonator 1610 (eg, the resonator 1710 of FIG. 17 ) is For example, it may be formed in the outer region of the resonator 1710 of FIG. 17 .
- the slot 1620 being formed in the outer region of the resonator 1610 means that the distance between the slot 1620 of the resonator 1610 and the inner surface (eg, 1692) of the resonator 1610 is, It may mean greater than the distance between the slot 1620 of the resonator 1610 and the outer surface (eg, 1691) of the resonator 1610.
- the electronic device 101 may include the resonator 1610 of FIG. 16 .
- the resonator 1610 may be formed in a loop shape.
- the resonator 1610 may be formed in a loop shape starting from one end 1612 of the resonator 1610 and extending to the other end 1611 .
- the resonator 1610 may form an empty space of the first length 1632 between one end 1612 and the other end 1611 of the resonator 1610 .
- the resonator 1610 may include a capacitor in a region between one end 1612 and the other end 1611 (eg, a region corresponding to an empty space of the first length 1632 shown in FIG.
- the resonator 1610 may be The position of the capacitor included in the resonator 1610 is not limited.
- the resonator 1610 is located in a region other than the region between one end 1612 and the other end 1611 (eg, the region corresponding to the empty space of the first length 1632 shown in FIG. 16). It may be connected to a capacitor disposed on.
- a capacitor disposed in another region is included in the resonator 1610 .
- the resonator 1610 may resonate by connecting a loop-shaped portion and a capacitor.
- the resonator 1610 may include a slot 1620 .
- the slot 1620 may be formed along a loop direction 1631 of the resonator 1610 .
- the slot 1620 may be formed in a designated shape by a designated length 1642 along a loop direction 1631 of the resonator 1610 .
- the slot 1620 includes a first sub-slot starting from one end 1623 of the slot 1620 and extending in a first direction (eg, a horizontal right direction in FIG. 16 ), and A second sub-slot extending in a different second direction (for example, a vertical upward direction in FIG.
- a fourth sub-slot extending in a direction parallel to the first direction (eg, a horizontal left direction in FIG. 16), a fifth sub-slot between the second sub-slot and the fourth sub-slot, and A sixth sub-slot extending in a fourth direction different from the three directions (eg, a vertical downward direction in FIG. 16, consequently a direction parallel to the second direction) and between the fourth sub-slot and the sixth sub-slot a seventh sub-slot and a slot 1620 extending in a fifth direction different from the fourth direction (eg, as the transverse right direction in FIG.
- the slot 16 may include an eighth subslot ending at the other end 1624 and a ninth subslot between the sixth and eighth subslots.
- the third sub-slot, fifth sub-slot, seventh sub-slot, and ninth sub-slot included in the slot 1620 may have a curved shape according to the shape of the resonator 1610 .
- the slot 1620 includes a first subslot having a first length, a second subslot having a second length, a third subslot having a third length, a fourth subslot having a fourth length, A 5th subslot having a 5th length, a 6th subslot having a 6th length, a 7th subslot having a 7th length, an 8th subslot having an 8th length, and a 9th subslot having a 9th length.
- the embodiment of FIG. 5 may be applied to the resonator 1610 according to various embodiments.
- resonator 440 may be resonator 1610 and slot 441 may be slot 1620 .
- the first inverter 410 may be connected to a first point 1621 and a second point 1622 of the resonator 1610 .
- the first point 1621 and the second point 1622 may be located on opposite sides with the slot 1620 of the resonator 1610 therebetween.
- the first point 1621 and the second point 1622 of the resonator 1610 are spaced apart from one end 1623 of the slot 1620 by a specified distance (eg, the first distance 1641 ). can be located in a given location.
- the designated distance (eg, the first distance 1641) will be described with reference to FIGS. 19 and 20 .
- the positions of the first point 1621 and the second point 1622 are exemplary, and the positions of the first point 1621 and the second point 1622 are not limited.
- the second inverter 420 may include at least one point different from the first point 1621 and the second point 1622 of the resonator 1610 (eg, the third point 1653 and the fourth point 1653). point 1654).
- the fourth point 1654 of the resonator 1610 may be located around one end 1612 of the resonator 1610, and the third point 1653 of the resonator 1610 may be It may be located around the other end 1611.
- the electronic device 101 may use the first inverter 410 to apply first power having a first frequency to the resonator 1610. You can control it.
- the electronic device 101 may determine the magnitude of the first frequency of the first power applied by the first inverter 410 . A method of determining the size of the frequency by the electronic device 101 will be described later.
- the electronic device 101 may check at least one impedance of the first point 1621 and the second point 1622 while the first power is applied to the resonator 1610 .
- the electronic device 101 while the first power is applied to the resonator 1610, the electronic device 101 periodically or continuously checks at least one impedance of the first point 1621 and the second point 1622.
- the electronic device 101 may determine an external object (eg, FIG. 11 ) adjacent to the electronic device 101 based on at least one impedance of the first point 1621 and the second point 1622 . 1130 or 1140 of) can be confirmed. For example, the electronic device 101 may determine an external object adjacent to the electronic device 101 based on a slope (or phase) of at least one impedance with respect to the first point 1621 and the second point 1622. For example, 1130 or 1140 of FIG. 11) can be checked. For example, the electronic device 101 may, based on a change in the slope (or phase) of at least one impedance with respect to the first point 1621 and the second point 1622, externally adjacent to the electronic device 101.
- an external object eg, FIG. 11
- An object eg, 1130 or 1140 in FIG. 11
- An object eg, 1130 or 1140 in FIG. 11
- a method of identifying an external object (eg, 1130 or 1140 in FIG. 11 ) adjacent to the electronic device 101 will be described later with reference to FIGS. 22 , 23 , and 24 .
- 18 is a diagram for explaining an operation of an electronic device according to an embodiment of the present disclosure.
- FIG. 18 is a graph of a reflection coefficient according to a frequency of power applied to a slot (eg, slot 1620 of FIG. 16 ) included in a resonator (eg, 1610 of FIG. 16 ) of the electronic device 101 shows
- a slot (eg, slot 1620 of FIG. 16 ) included in a resonator (eg, 1610 of FIG. 16 ) of an electronic device 101 has a first
- the first power having a frequency eg, 333 MHz in FIG. 18
- the second power having a second frequency eg, 668 MHz in FIG. 18
- the first frequency (eg, 333 MHz in FIG. 18 ) and the second frequency (eg, 668 MHz in FIG. 18 ) are the resonator (eg, 1610 in FIG. 16 ) of the electronic device 101 .
- the electronic The device 101 may determine a frequency of power applied to a slot (eg, the slot 1620 of FIG. 16 ). For example, the electronic device 101 transmits power having a frequency designated based on the length and/or shape of the slot (eg, the slot 1620 of FIG. 16 ) to the slot (eg, the slot 1620 of FIG. 16 ).
- the first inverter 410 may be controlled to apply to the slot 1620 of
- 19 is a diagram for explaining an operation of an electronic device according to an embodiment of the present disclosure.
- 20 is a diagram for explaining an operation of an electronic device according to an embodiment of the present disclosure.
- 21 is a diagram for explaining an operation of an electronic device according to an embodiment of the present disclosure.
- FIG. 19 shows a frequency assigned to a slot 1920 (eg, the slot 1620 of FIG. 16 ) included in the resonator 1910 (eg, the resonator 1610 of FIG. 16 ) of the electronic device 101 . It is a diagram showing the current distribution of the resonator 1910 when power having is applied. For example, in (a) of FIG. 19 , first power having a first frequency (eg, 333 MHz in FIG. 18 ) is applied to a slot 1920 included in a resonator 1910 of the electronic device 101 . It is a diagram showing the current distribution of the resonator 1910 when For example, in (a) of FIG.
- the resonator 1910 when power having a specified frequency is applied to the slot 1920 included in the resonator 1910 of the electronic device 101 in a manner similar to (a) and (b) of FIG. 19 , the resonator 1910 ) voltage distribution can be obtained.
- the first point 1621 and the second point 1622 of the slot 1620 included in the resonator 1610 of FIG. 16 are the current distribution of the resonator 1910 disclosed in FIG. 19, and Based on the voltage distribution obtained in a similar way, it can be determined.
- current distribution and voltage distribution of the resonator 1910 may be determined according to the length and shape of the slot (eg, 1620 of FIG. 16 ), and accordingly, the first inverter 410 of the electronic device 101 A first point (eg, 1621 of FIG. 16 ) and a second point (eg, 1622 of FIG. 16 ) of the resonator (eg, 1610 of FIG. 16 ) to be connected to may be determined.
- FIG. 20 shows a frequency assigned to a slot 2020 (eg, slot 1620 of FIG. 16 ) included in a resonator 2010 (eg, resonator 1610 of FIG. 16 ) of the electronic device 101 . It is a diagram showing the distribution of the electric field formed around the resonator 2010 when power having is applied. For example, in (a) of FIG. 20 , first power having a first frequency (eg, 333 MHz in FIG. 18 ) is applied to a slot 2020 included in a resonator 2010 of the electronic device 101 . It is a diagram showing the distribution of the electric field formed around the resonator 2010 when For example, in (a) of FIG.
- the electric field has a minimum value around the fifth point 2045 located at a designated distance from the other end of the slot 2020, and around the second point 2042 and the fourth point 2044 of the slot 2020. It can be seen that the electric field has a minimum value.
- FIG. 21 is a diagram illustrating a distribution 2130 of an electric field formed around a resonator 2110 when power having a specified frequency is applied to a slot 2120 included in the resonator 2110 of the electronic device 101.
- the distribution 2130 of the electric field formed around the resonator 2110 may vary according to the length and/or shape of the slot 2120 included in the resonator 2110 .
- 22 is a diagram for explaining an operation of an electronic device according to an embodiment of the present disclosure.
- FIG. 22 is a slot formed in a resonator (eg, 1610 of FIG. 16 ) as the distance between an external object (eg, external objects 1130 and 1140 of FIG. 11 ) and the electronic device 101 changes. It is a diagram showing that the phase of the impedance measured at (eg, 1620 in FIG. 16) changes.
- frequencies eg, 324 MHz, 333 MHz, and 340 MHz
- the phase of the impedance measured in the slot eg, 1620 in FIG. 16
- frequencies eg, 324 MHz, 333 MHz, and 340 MHz
- 23 is a diagram for explaining an operation of an electronic device according to an embodiment of the present disclosure. 23 will be described with reference to FIGS. 13 and 16 .
- the embodiment of FIG. 13 may be applied to the resonator 1610 according to various embodiments.
- the electronic device 101 uses a sensor (eg, 450 in FIG. 4A ) (or a phase detector (eg, 453 in FIG. 4B )) to determine the first point (eg, 450 in FIG. 4B ). 16 1621) and at least one first slope (eg, X /R).
- FIG. 23 shows a first point (eg, 1621 of FIG. 16 ) and a second point of a resonator (eg, 1610 of FIG. 16 ) in which a slot (eg, 1620 of FIG. 16 ) is formed.
- first power having a first frequency eg, 333 MHz in FIG. 18
- an external object eg, 333 MHz in FIG. 18 located around the electronic device 101
- 2341 is a result related to a first external object (eg, the first external object 1130 (eg, conductor) in FIG. 11 )
- 2342 is a result related to a second external object (eg, a conductor).
- it may be a result related to the second external object 1140 (eg, human body) of FIG. 11 .
- the second external object eg, the second external object 1140 (eg, human body) of FIG. 11
- the second external object is at a reference distance (eg, in FIG. 23 ). 50 mm
- the electronic device 101 includes a first point (eg, 1621 of FIG. 16 ) of a resonator (eg, 1610 of FIG. 16 ) in which a slot (eg, 1620 of FIG. 16 ) is formed and At least one slope (eg, X/R) of at least one impedance with respect to the second point (eg, 1622 of FIG. 16 ) may be compared with a reference value.
- the reference value may be a first reference value (eg, 390) that is a divergence point between 2341 and 2342 at or below the reference distance (eg, 50 mm).
- the electronic device 101 includes a first point (eg, 1621 of FIG. 16 ) of a resonator (eg, 1610 of FIG. 16 ) in which a slot (eg, 1620 of FIG. 16 ) is formed and At least one slope (eg, X/R) of at least one impedance with respect to the second point (eg, 1622 of FIG. 16) is a reference value (eg, a first reference value (eg, 390)). ), an external object (eg, 1130 of FIG. 11 ) adjacent to the electronic device 101 may be identified as a first type (eg, conductor) object.
- a first type eg, conductor
- the electronic device 101 includes a first point (eg, 1621 of FIG. 16 ) of a resonator (eg, 1610 of FIG. 16 ) in which a slot (eg, 1620 of FIG. 16 ) is formed and At least one slope (eg, X/R) of at least one impedance with respect to the second point (eg, 1622 of FIG. 16) is a reference value (eg, a first reference value (eg, 390)). ), an external object (eg, 1140 of FIG. 11 ) adjacent to the electronic device 101 may be identified as a second type (eg, human body) object.
- the electronic device 101 includes a first point (eg, 1621 of FIG.
- At least one slope (eg, X / R) of at least one impedance with respect to the second point (eg, 1622 of FIG. 16 ) is less than a reference value (eg, a first reference value or a second reference value), and , Based on the increase in at least one first slope (eg, X/R) identified in operation 1301, the external object that is a second type (eg, human body) object and the electronic device 101 It can be judged that the distance between them increases.
- a reference value eg, a first reference value or a second reference value
- the embodiment of FIG. 15 may be applied to the resonator 1610 according to various embodiments.
- the electronic device 101 (eg, the controller 430 of the electronic device 101) supplies a first power (eg, 440 in FIG. 4A or 1610 in FIG. 16 ) to a resonator. For example, a period at least partially overlapping a period during which the first power having a first frequency applied to the first point 1621 and the second point 1622 of the resonator 1610 by the first inverter 410 is applied. while applying the second power having a second frequency different from the first frequency to at least one point (eg, 1653 and 1654 of FIG. 16 ) of the resonator (eg, 1610 of FIG. 16 ). (420) can be controlled.
- a first power eg, 440 in FIG. 4A or 1610 in FIG. 16
- a resonator For example, a period at least partially overlapping a period during which the first power having a first frequency applied to the first point 1621 and the second point 1622 of the resonator 1610 by the first inverter 410 is applied
- the first inverter 410 may be connected to the first point 1621 and the second point 1622 of the resonator 1610, and the second inverter 420 may be connected to a third point of the resonator 1610. It can be connected to point 1653 and fourth point 1654 .
- the electronic device 101 applies first power (eg, power for sensing) having a first frequency to the first point 1621 and the second point 1622 of the resonator 1610.
- first power eg, power for sensing
- external objects eg, 1130 and 1140 in FIG. 11
- Wireless power may be transmitted to a wireless power receiver (eg, 195 of FIG.
- the first inverter 410 may be controlled to apply the first power having a first frequency different from the second frequency to the first point 1621 and the second point 1622 .
- an event eg, external A first inverter to apply a first power having a first frequency different from the second frequency to the first point 1621 and the second point 1622 of the resonator 1610 as an object detection request event
- an event eg, external A first inverter to apply a first power having a first frequency different from the second frequency to the first point 1621 and the second point 1622 of the resonator 1610 as an object detection request event
- the electronic device 101 while the first power is applied, based on at least one impedance of the first point 1621 and the second point 1622 of the resonator 1610, the external object ( For example, 1140 of FIG. 11) may be identified as an object of the second type (eg, human body).
- the second type eg, human body
- Supply of the second power having the second frequency applied to the third point 1653 and the fourth point 1654 of the resonator 1610 may be stopped.
- the electronic device 101 determines an external object (eg, 1130 of FIG. 11 ) adjacent to the electronic device 101 as an object of the first type (eg, a conductor). Based on this, provision of the second power (eg, power for charging) that was stopped may be resumed.
- provision of the second power eg, power for charging
- 24 is a diagram for explaining an operation of an electronic device according to an embodiment of the present disclosure. 24 will be described with reference to FIG. 16 .
- the 24 shows a resonator (eg, 1130 or 1140 of FIG. 11 ) and the electronic device 101 in a state in which the distance is fixed (eg, 50 mm, 30 mm, or 10 mm).
- the frequency of the power applied to the slot (eg, 1620 of FIG. 16) formed in the slot (eg, 1610 of FIG. 16) changes, the slot (eg, 1610 of FIG. 16) formed in the resonator (eg, It is a diagram showing that the slope value of the impedance measured at 1620 of 16) changes.
- the electronic device 101 has two points (eg, 1610 in FIG. 16 ) of resonators (eg, 1610 in FIG.
- At least one impedance for 1621 and 1622 of FIG. 16 can be checked, and if the slope of the checked at least one impedance is graphed, FIG. 24 can be obtained.
- the distance between the external object (eg, 1130 or 1140 of FIG. 11) and the electronic device 101 becomes closer. Accordingly, it can be seen that the slope value of the impedance measured in the slot (eg, 1620 of FIG. 16 ) formed in the resonator (eg, 1610 of FIG. 16 ) further changes.
- the electronic device 101 shows the amount of power applied to a slot (eg, 1620 of FIG. 16 ) formed in a resonator (eg, 1610 of FIG. 16 ).
- the electronic device 101 By sweeping the frequency around 370 MHz, it may be determined whether the distance between the external object (eg, 1130 or 1140 in FIG. 11 ) and the electronic device 101 is getting closer or further. For example, the electronic device 101 reduces the frequency of power applied to a slot (eg, 1620 of FIG. 16 ) formed in a resonator (eg, 1610 of FIG. 16 ) in a range greater than 370 MHz. A first change in at least one slope value of at least one impedance measured in a slot (eg, 1620 of FIG. 16 ) for one period and a frequency of power applied to the slot (eg, 1620 of FIG.
- a second change in at least one slope value of at least one impedance measured in a slot (eg, 1620 in FIG. 16 ) during a second period of decreasing in a range smaller than 370 MHz may be compared, and the second change may be compared with the first change. 2 , it may be determined that the distance between the external object (eg, 1130 or 1140 in FIG. 11 ) and the electronic device 101 is getting closer.
- the distance between the external object (eg, 1130 or 1140 of FIG. 11) and the electronic device 101 increases. Accordingly, it can be seen that the slope value of the impedance measured in the slot (eg, 1620 of FIG. 16 ) formed in the resonator (eg, 1610 of FIG. 16 ) further changes.
- the electronic device 101 shows the amount of power applied to a slot (eg, 1620 of FIG. 16 ) formed in a resonator (eg, 1610 of FIG. 16 ).
- the electronic device 101 By sweeping the frequency around 300 MHz, it may be determined whether the distance between the external object (eg, 1130 or 1140 in FIG. 11 ) and the electronic device 101 is getting closer or further. For example, the electronic device 101 reduces the frequency of power applied to a slot (eg, 1620 of FIG. 16 ) formed in a resonator (eg, 1610 of FIG. 16 ) in a range greater than 300 MHz. A first change in at least one slope value of at least one impedance measured in a slot (eg, 1620 of FIG. 16 ) for one period and a frequency of power applied to the slot (eg, 1620 of FIG.
- a second change in at least one slope value of at least one impedance measured in a slot (eg, 1620 in FIG. 16) during a second period of decreasing in a range of less than 300 MHz may be compared, and the second change may be compared with the first change. 2 , it may be determined that the distance between the external object (eg, 1130 or 1140 in FIG. 11 ) and the electronic device 101 increases.
- 25 is a diagram illustrating a resonator included in an electronic device according to an embodiment of the present disclosure.
- the electronic device 101 may include a resonator 2510 in which a plurality of slots (eg, 2520 and 2530) are formed.
- the resonator 2510 included in the electronic device 101 may be configured as a plane (eg, formed on a printed circuit board (PCB)).
- FIG. 25 may be a top view of the resonator 2510 configured as a plane.
- the resonator 2510 included in the electronic device 101 may be three-dimensionally formed in space. For example, FIG.
- the resonator 25 may be a top view of the resonator 2510 formed three-dimensionally in space. 6 and 7 for the shape of the resonator 2510 (eg, donut shape, and/or tube shape) and the location of slots (eg, 2520 and 2530) formed in the resonator 2510. has been described above with
- the electronic device 101 may include a resonator 2510 according to various embodiments.
- the resonator 2510 may be formed in a loop shape.
- the resonator 2510 may be formed in a loop shape starting from one end 2512 of the resonator 2510 and extending to the other end 2511 .
- the resonator 2510 may form an empty space of the first length 2542 between one end 2512 and the other end 2511 of the resonator 2510 .
- the resonator 2510 may include a capacitor in a region between one end 2512 and the other end 2511 (eg, a region corresponding to an empty space of the first length 2542 shown in FIG. 25).
- the position of the capacitor included in the resonator 2510 is not limited.
- the resonator 2510 has a region other than the region between one end 2512 and the other end 2511 (eg, the region corresponding to the empty space of the first length 2542 shown in FIG. 25). It may be connected to a capacitor disposed on.
- a capacitor disposed in another region is included in the resonator 2510 .
- the resonator 2510 may resonate by connecting a loop-shaped portion and a capacitor.
- the resonator 2510 may include a first slot 2520 and a second slot 2530 .
- the first slot 2520 may be formed along a loop direction 2541 of the resonator 2510 .
- the first slot 2520 may be formed in a designated shape by a designated length 2551 along a loop direction 2541 of the resonator 2510 .
- the first slot 2520 includes a first sub-slot starting from one end 2523 of the first slot 2520 and extending in a first direction (eg, a vertical upward direction in FIG. 25 ); It may include a second sub-slot extending in a second direction different from the first direction (eg, a horizontal left direction in FIG.
- the second sub-slot included in the first slot 2520 may have a curved shape according to the shape of the resonator 2510 .
- the first slot 2520 includes a first sub-slot having a first length, a second sub-slot having a second length, and a third sub-slot having a third length, so that the designated length 2551 ) can be formed.
- the second slot 2530 may be formed along a loop direction 2541 of the resonator 2510 .
- the second slot 2530 may be formed in a designated shape by a designated length 2561 along a loop direction 2541 of the resonator 2510 .
- the second slot 2530 includes a fourth sub-slot starting from one end 2533 of the second slot 2530 and extending in a fourth direction (eg, a horizontal left direction in FIG. 25 ); A fifth subslot extending in a fifth direction different from the fourth direction (eg, a vertical upward direction in FIG. 25 ) and a sixth subslot between the fourth and fifth subslots.
- the sixth sub-slot included in the second slot 2530 may have a curved shape according to the shape of the resonator 2510 .
- the second slot 2530 includes a 4th subslot having a 4th length, a 5th subslot having a 5th length, and a 6th subslot having a 6th length, so that the designated length 2561 ) can be formed.
- 26 shows a block diagram of an electronic device, according to an embodiment of the present disclosure.
- FIG. 27 shows a block diagram of an electronic device, according to an embodiment of the present disclosure. 26 and 27 will be described with reference to FIG. 25 .
- an electronic device 101 includes a controller 2640, a first inverter 2610, a second inverter 2620, a third inverter 2630, a resonator 2650, and a sensor 2660.
- the resonator 2650 may be the first resonator 230 or the second resonator 240 of FIG. 2 .
- the resonator 2650 of FIG. 26 may be the resonator 2510 of FIG. 25 .
- the resonator 2650 of FIG. 26 may include a first slot 2651 and a second slot 2652 .
- the sensor 2660 of FIG. 26 may include a first sensor, a second sensor, and a third sensor.
- a first sensor included in the sensor 2660 may sense information related to the first slot 2651 of the resonator 2650 .
- a second sensor included in the sensor 2660 may sense information related to the second slot 2652 of the resonator 2650 .
- a third sensor included in the sensor 2660 may sense information about an area different from an area including the first slot 2651 and the second slot 2652 of the resonator 2650 .
- the sensor 2660 may include a single sensor, and the configuration of the sensor 2660 is not limited.
- the first inverter 2610 may apply power to the first slot 2651 (eg, the first slot 2520).
- the first inverter 2610 may be connected to the first point 2521 and the second point 2522 of the resonator 2510 of FIG. 25 .
- the first point 2521 and the second point 2522 of the resonator 2510 in FIG. 25 are the first slot 2520 in FIG. 25 (eg, the first slot 2651 in FIG. 26 ). ) can be located on opposite sides with a gap between them.
- the second inverter 2620 may apply power to the second slot 2652 (eg, the second slot 2530).
- the second inverter 2620 may be connected to the third point 2531 and the fourth point 2532 of the resonator 2510 of FIG. 25 .
- the third point 2531 and the fourth point 2532 of the resonator 2510 of FIG. 25 are the second slot 2530 of FIG. 25 (eg, the second slot 2652 of FIG. 26). ) can be located on opposite sides with a gap between them.
- the third inverter 2630 may apply power to the resonator 2650 (eg, the resonator 2510).
- the third inverter 2630 is different from the first point 2521, the second point 2522, the third point 2531, and the fourth point 2532 of the resonator 2510 of FIG. , power may be applied to at least one point (eg, a fifth point 2573 and a sixth point 2574) of the resonator 2510.
- an electronic device 101 includes a first inverter 2610, a first coupler 2711, a first converter 2712, a first phase detector 2713, a first Slot 2651 (for example, the first slot 2651 included in the resonator 2650 of FIG. 26), the second inverter 2620, the second coupler 2721, the second converter 2722, the second A phase detector 2723 and a second slot 2652 (eg, the second slot 2652 included in the resonator 2650 of FIG. 26) may be included.
- the sensor 2660 of FIG. 26 includes the first coupler 2711, the first converter 2712, the first phase detector 2713, the second coupler 2721, and the second converter 2722 of FIG.
- the first sensor included in the sensor 2660 of FIG. 26 may include the first coupler 2711, the first converter 2712, and the first phase detector 2713 of FIG. 27 .
- the second sensor included in the sensor 2660 of FIG. 26 may include the second coupler 2721, the second converter 2722, and the second phase detector 2723 of FIG. 27 .
- 27 included in the sensor 2660 of FIG. 26 the first coupler 2711, the first converter 2712, the first phase detector 2713, the second coupler 2721, the second converter 2722, And each connection form and each function of the second phase detector 2723 can be understood with reference to the description of FIGS. 4A and 4B.
- the electronic device 101 may include a first sensor included in the sensor 2660 of FIG. 26 (eg, the first coupler 2711 of FIG. 27 , the first converter 2712, and the first phase Information on the first slot 2651 (eg, the first slot 2520 of FIG. 25 ) may be sensed using the detector 2713 .
- the electronic device 101 may include a second sensor included in the sensor 2660 of FIG. 26 (eg, the second coupler 2721 of FIG. 27 , the second converter 2722, and the second phase Information on the second slot 2652 (eg, the second slot 2530 of FIG. 25 ) may be sensed using the detector 2723 .
- the embodiment of FIG. 5, the embodiment of FIG. 13, and the embodiment of FIG. 15 may be applied to the resonator 2510, and a plurality of slots (eg, For example, for the embodiment of FIG. 5, the embodiment of FIG. 13, and the embodiment of FIG. 15 applied to the resonator 2510 in which 2520 and 2530 are formed, the embodiment of FIG. 5, the embodiment of FIG. 13 and the embodiment of FIG. It can be understood by referring to the description of the embodiment of 15.
- 28 is a flowchart illustrating an operation of an electronic device according to an embodiment of the present disclosure. 28 will be described with reference to FIG. 25 .
- the electronic device 101 (eg, the controller 430 of the electronic device 101) supplies first power having a first frequency to a resonator.
- the first inverter 2610 may be controlled to apply the voltage to the resonator 2510 of FIG. 25 ).
- a first inverter 2610 may be connected to a first point 2521 and a second point 2522 of the resonator 2510 .
- the first point 2521 and the second point 2522 of the resonator 2510 may be located on opposite sides with the first slot 2520 of the resonator 2510 therebetween.
- the first point 2521 and the second point 2522 of the resonator 2510 are a specified distance (eg, the first distance 2552) from one end 2523 of the first slot 2520. It may be located at a spaced apart position.
- the positions of the first point 2521 and the second point 2522 are exemplary, and the positions of the first point 2521 and the second point 2522 are not limited.
- the electronic device 101 may determine a first frequency of the first power applied by the first inverter 2610 .
- the frequency may be a designated value, and in this case, the operation of the electronic device 101 to determine the frequency may be omitted.
- the electronic device 101 sets a first point (eg, FIG. 2521 of 25) and at least one first impedance for the second point (eg, 2522 of FIG. 25) may be checked. For example, referring to FIG. 25 , while the first power is applied to the resonator 2510, the electronic device 101 periodically or continuously generates a first point 2521 and a second point 2522 At least one first impedance may be identified.
- the at least one first impedance may refer to an impedance confirmed at one point in time or a plurality of impedances measured in time series. While the electronic device 101 is applying a first power to a resonator (eg, the resonator 2510 of FIG.
- a first point eg, 2521 of FIG. 25
- a second point eg, the resonator 2510 of FIG. 25 , 2522 of FIG. 25
- first power is applied to the resonator (eg, the resonator 2510 of FIG. This may mean checking at least one first slope of at least one first impedance with respect to 2521 of FIG. 25) and a second point (eg, 2522 of FIG. 25).
- the electronic device 101 (eg, the controller 430 of the electronic device 101) supplies second power having a second frequency to the resonator.
- the second inverter 2620 may be controlled to apply the voltage to the resonator 2510 of FIG. 25 ).
- the second inverter 2620 may be connected to a third point 2531 and a fourth point 2532 of the resonator 2510 .
- the third point 2531 and the fourth point 2532 of the resonator 2510 may be located on opposite sides with the second slot 2530 of the resonator 2510 therebetween.
- the third point 2531 and the fourth point 2532 of the resonator 2510 are a designated distance (eg, a second distance 2562) from one end 2533 of the second slot 2530. It may be located at a spaced apart position.
- the positions of the third point 2531 and the fourth point 2532 are illustrative, and the positions of the third point 2531 and the fourth point 2532 are not limited.
- the electronic device 101 may determine a second frequency of the second power applied by the second inverter 2620 .
- the frequency may be a designated value, and in this case, the operation of the electronic device 101 to determine the frequency may be omitted.
- the electronic device 101 determines a third point (eg, the resonator 2510 of FIG. At least one second impedance for 2531 of 25) and the fourth point (eg, 2532 of FIG. 25) may be checked. For example, referring to FIG. 25 , while the second power is applied to the resonator 2510, the electronic device 101 periodically or continuously determines the third and fourth points 2531 and 2532. At least one second impedance may be identified.
- the at least one second impedance may refer to an impedance confirmed at one point in time or a plurality of impedances measured in time series.
- a third point eg, 2531 of FIG. 25
- a fourth point eg, the resonator 2510 of FIG. 25 , 2532 of FIG. 25
- a third point eg, It may mean checking at least one second slope of at least one second impedance with respect to 2531 of FIG. 25
- a fourth point eg, 2532 of FIG. 25
- the electronic device 101 determines the first point (eg, 2521 of FIG. 25) and the second point (eg, 2522 of FIG. 25) of the resonator 2510. Based on at least one first impedance for , and at least one second impedance for a third point (eg, 2531 in FIG. 25 ) and a fourth point (eg, 2532 in FIG. 25 ), An external object (eg, 1130 or 1140 in FIG. 11 ) adjacent to the device 101 may be identified. For example, the electronic device 101 may generate at least one first point (eg, 2521 of FIG. 25 ) and a second point (eg, 2522 of FIG. 25 ) of the resonator 2510 .
- An external object (eg, 1130 or 1140 of FIG. 11 ) adjacent to the electronic device 101 may be identified based on at least one second slope (or second phase) of the impedance.
- the electronic device 101 may generate at least one first point (eg, 2521 of FIG. 25 ) and a second point (eg, 2522 of FIG. 25 ) of the resonator 2510 .
- an external object adjacent to the electronic device 101 can be checked.
- the electronic device 101 has an impedance at a point in time with respect to a first point (eg, 2521 in FIG. 25 ) and a second point (eg, 2522 in FIG. 25 ) of the resonator 2510 . Based on , it is possible to check whether an external object (eg, 1130 or 1140 in FIG. 11 ) is disposed adjacent to the electronic device 101 and/or identification information of the external object.
- the electronic device 101 has an impedance at a point in time with respect to a third point (eg, 2531 in FIG. 25 ) and a fourth point (eg, 2532 in FIG. 25 ) of the resonator 2510 . Based on , it is possible to check whether an external object (eg, 1130 or 1140 in FIG. 11 ) is disposed adjacent to the electronic device 101 and/or identification information of the external object.
- the electronic device 101 may provide one viewpoint (eg, 2521 in FIG. 25 ) and a second point (eg, 2522 in FIG. 25 ) of the resonator 2510 .
- a first impedance at a first time point, and one time point eg, 2531 in FIG.
- the first viewpoint and the second viewpoint may be the same or different.
- the electronic device may include a first slot (eg, 441 in FIG. 4A, 620 in FIG. 6, 720 in FIG. 7, 1620 in FIG. 16, FIG. 1720 of 17, 2520 of FIG. 25, or 2650 of FIG. 26) formed resonators (eg, 440 of FIGS. 4A and 4B, 610 of FIG. 6, 710 of FIG. 7, 1610 of FIG. 16, 1710 of FIG. 17, or 2510 in FIG. 25), a first point (eg, 621 in FIG. 6, 1621 in FIG. 16, or 2521 in FIG. 25) and a second point (eg, 2521 in FIG. 6) on the first slot of the resonator. 622, 1622 in FIG.
- a first slot eg, 441 in FIG. 4A, 620 in FIG. 6, 720 in FIG. 7, 1620 in FIG. 16, FIG. 1720 of 17, 2520 of FIG. 25, or 2650 of FIG. 26
- resonators eg, 440 of FIGS. 4A and 4B, 610
- the controller transmits first power having a first frequency to the first power.
- Control the first inverter to apply to one slot check at least one first impedance for the first point and the second point while the first power is applied to the first slot, and Based on one first impedance, an external object (eg, 1130 or 1140 in FIG. 11 ) adjacent to the electronic device is identified, and a period during which the first power is applied to the resonator and at least During a partial overlapping period, second power having a second frequency different from the first frequency is supplied to the third and fourth points to wirelessly provide power to an external wireless power receiver (eg, 195). It may be set to control the second inverter to apply.
- the first point and the second point connected to the first inverter may be one end of the first slot (eg, 623 in FIG. 6 , 1623 in FIG. 16 , or 2523 in FIG. 25 ). ) may be located at a position spaced apart from the designated first distance.
- the resonator is formed in a loop shape, and the first slot is along a loop direction (eg, 631 in FIG. 6 , 1631 in FIG. 16 , or 2541 in FIG. 25 ) of the resonator. It may be formed in a designated shape by a designated length.
- the first slot of the designated form includes a first sub-slot (eg, 627 in FIG. 6 ) extending in a first direction and a second sub-slot (eg, 627 in FIG. 6 ) extending in a second direction different from the first direction. , 629 of FIG. 6), and a third subslot (eg, 628 of FIG. 6) between the first subslot and the second subslot.
- a distance between 1624 of FIG. 16 ) and the other end of the resonator (eg, 1611 of FIG. 16 ) may be less than or equal to the specified second distance.
- a distance between the first slot and an inner surface of the resonator may be greater than a distance between the first slot and an outer surface of the resonator.
- the electronic device 101 may include a first sensor (eg, 450 in FIG. 4A , or A first sensor 2660 in FIG. 26) is further included, and the first sensor includes a first coupler (eg, 451 in FIG. 4B or 2711 in FIG. 27) connecting the first inverter and the resonator; A first converter (eg, 452 of FIG. 4B or 2712 of FIG. 27 ) connected to the first coupler, and a first phase detector (eg, 453 of FIG. 4B or 2712 of FIG. 27 ) connected to the first converter. 2713 of FIG. 27) may be included.
- the controller may check at least one first slope of the at least one first impedance with respect to the first point and the second point using the first phase detector.
- the controller checks at least one first slope of the at least one first impedance, and determines that the at least one first slope is greater than or equal to a first reference value, and the external object (eg For example, 1130 of FIG. 11) is identified as a first type (eg, conductor) object, and the external object (eg, FIG. 1140 of) may be set to identify an object of the second type (eg, a human body).
- a first type eg, conductor
- the external object eg, FIG. 1140 of
- the controller may determine that the at least one first slope is equal to or greater than the first reference value, and the external object that is the first type of object is determined based on an increase in the at least one first slope
- the second type object It may be set to determine that the distance between the external object and the electronic device increases.
- the controller determines that the external object (eg, 1140 of FIG. 11 ) is of a second type (eg, based on the at least one first impedance checked while the first power is applied). In response to being identified as an object (for example, a human body), provision of the second power may be stopped.
- the electronic device 101 is connected to a fifth point (eg, 2531 of FIG. 25 ) and a sixth point (eg, 2532 of FIG. 25 ) of the resonator to form the resonator.
- a third inverter eg, 2620 of FIG. 26 ) configured to provide power may be further included.
- the fifth point and the sixth point of the resonator may be positioned opposite to each other with the second slot of the resonator (eg, 2530 in FIG. 25 or 2652 in FIG. 26 ) interposed therebetween.
- the controller controls the third inverter to apply a third power having a third frequency to the resonator, and while the third power is applied to the resonator, at least for the fifth point and the sixth point
- One second impedance may be identified, and based on the at least one first impedance and the at least one second impedance, the external object adjacent to the electronic device may be further configured to be identified.
- the electronic device 101 may include a second sensor (eg, the second sensor (eg, the second sensor 2660 of FIG. 26 ) for checking the at least one second impedance with respect to the fifth point and the sixth point. sensor), and the second sensor includes a second coupler (eg, 2721 of FIG. 27 ) connecting the second inverter and the resonator, and a second converter (eg, 2721 of FIG. 27 ) connected to the second coupler.
- a second phase detector eg, 2723 of FIG. 27
- the controller may check at least one second slope of the at least one second impedance with respect to the fifth point and the sixth point using the second phase detector.
- a resonator (eg, 440 in FIG. 4A , 610 in FIG. 6 , 710 in FIG. 7 , 1610 in FIG. 16 , and 17 in FIG. 17 ) included in an electronic device (eg, the electronic device 101 ).
- 1710 in or 2510 in FIG. 25 is a first slot (eg, 441 in FIGS. 4A and 4B , 620 in FIG. 6 , 720 in FIG. 7 , 1620 in FIG. 16 , 1720 in FIG. 17 , 2520 in FIG. 25 ) , or 2650 in FIG.
- the resonator is formed in a loop shape, and the first slot is formed in a loop direction of the resonator (eg, 631 in FIG. 6, 1631 in FIG. 16, or 2541 in FIG. 25). ) along a specified length, and the electronic device sets a first point of the resonator (eg, FIG. 621 of FIG. 16 , or 2521 of FIG. 25 ) and a first inverter (eg, 622 of FIG. 6 , 1622 of FIG. 16 , or 2522 of FIG. 25 ) connected to the second point (eg, Control 410 of FIGS. 4A and 4B or 2610 of FIG.
- a first point of the resonator eg, FIG. 621 of FIG. 16 , or 2521 of FIG. 25
- a first inverter eg, 622 of FIG. 6 , 1622 of FIG. 16 , or 2522 of FIG. 25
- the first point and the second point are located on opposite sides with the first slot interposed therebetween -, the first power to the resonator
- An external object eg, 1130 or 1140 in FIG. 11
- An external object adjacent to the electronic device is identified based on at least one first impedance for the first point and the second point, which is identified while the voltage is applied.
- a second frequency different from the first frequency is used to provide power to an external wireless power receiver (eg, 195).
- third and fourth points of the resonator different from the first and second points eg, 653 and 654 in FIG. 6 , 1653 and 1654 in FIG. 16 , Alternatively, it may be configured to control the second inverter (eg, 420 in FIG. 4A or 2630 in FIG. 26 ) connected to 2573 and 2574 in FIG. 25 .
- the first point and the second point connected to the first inverter may be one end of the first slot (eg, 623 in FIG. 6 , 1623 in FIG. 16 , or 2523 in FIG. 25 ). ) may be located at a position spaced apart from the designated first distance.
- the first slot of the designated shape includes a first sub-slot (eg, 627 in FIG. 6 ) extending in a first direction and a second sub-slot extending in a second direction different from the first direction.
- a subslot (eg, 629 of FIG. 6 ) and a third subslot (eg, 628 of FIG. 6 ) between the first subslot and the second subslot may be included.
- a distance between 1624 of FIG. 16 ) and the other end of the resonator (eg, 1611 of FIG. 16 ) may be less than or equal to the specified second distance.
- a distance between the first slot and an inner surface of the resonator may be greater than a distance between the first slot and an outer surface of the resonator.
- the resonator further includes a second slot (eg, 2530 in FIG. 25 or 2652 in FIG. 26 ), and the second slot extends along the loop direction of the resonator to the first slot. It is formed at a position different from that of the resonator, and the distance between one end of the resonator (eg, 2512 in FIG. 25) and the first slot (eg, 2520 in FIG. 25) is the other end of the resonator (eg, 2520 in FIG. 2511) and the second slot (eg, 2530 of FIG. 25).
- a second slot eg, 2530 in FIG. 25 or 2652 in FIG. 26
- the second slot extends along the loop direction of the resonator to the first slot. It is formed at a position different from that of the resonator, and the distance between one end of the resonator (eg, 2512 in FIG. 25) and the first slot (eg, 2520 in FIG. 25) is the other end of the resonator (
- the electronic device may apply third power having a third frequency different from the first frequency of the first power to the resonator at a fifth point (eg, FIG. 25 ) of the resonator. 2531) and a third inverter (eg, 2620 in FIG. 26 ) connected to a sixth point (eg, 2532 in FIG.
- the fifth point and the sixth point are the second located on opposite sides with a slot therebetween-, the at least one first impedance with respect to the first point and the second point, identified while the first power is applied to the resonator, and the resonator with the
- the external object adjacent to the electronic device may be further configured to be identified based on at least one second impedance with respect to the fifth point and the sixth point, which is identified while the third power is applied.
- Electronic devices may be devices of various types.
- the electronic device may include, for example, a portable communication device (eg, a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance.
- a portable communication device eg, a smart phone
- a computer device e.g., a smart phone
- a portable multimedia device e.g., a portable medical device
- a camera e.g., a portable medical device
- a camera e.g., a portable medical device
- a camera e.g., a portable medical device
- a camera e.g., a camera
- a wearable device e.g., a smart bracelet
- first, second, or first or secondary may simply be used to distinguish a given component from other corresponding components, and may be used to refer to a given component in another aspect (eg, importance or order) is not limited.
- a (e.g., first) component is said to be “coupled” or “connected” to another (e.g., second) component, with or without the terms “functionally” or “communicatively.”
- the certain component may be connected to the other component directly (eg by wire), wirelessly, or through a third component.
- module used in various embodiments of this document may include a unit implemented in hardware, software, or firmware, and is interchangeable with terms such as, for example, logic, logical blocks, parts, or circuits.
- a module may be an integrally constructed component or a minimal unit of components or a portion thereof that performs one or more functions.
- the module may be implemented in the form of an application-specific integrated circuit (ASIC).
- ASIC application-specific integrated circuit
- a processor eg, a processor of a device (eg, an electronic device) may call at least one command among one or more instructions stored from a storage medium and execute it. This enables the device to be operated to perform at least one function according to the at least one command invoked.
- the one or more instructions may include code generated by a compiler or code executable by an interpreter.
- the device-readable storage medium may be provided in the form of a non-transitory storage medium.
- the storage medium is a tangible device and does not contain a signal (e.g. electromagnetic wave), and this term refers to the case where data is stored semi-permanently in the storage medium. It does not discriminate when it is temporarily stored.
- a signal e.g. electromagnetic wave
- the method according to various embodiments disclosed in this document may be included and provided in a computer program product.
- Computer program products may be traded between sellers and buyers as commodities.
- a computer program product is distributed in the form of a device-readable storage medium (e.g. compact disc read only memory (CD-ROM)), or through an application store (e.g. Play Store TM ) or on two user devices (e.g. It can be distributed (eg downloaded or uploaded) online, directly between smart phones.
- a device e.g. compact disc read only memory (CD-ROM)
- an application store e.g. Play Store TM
- It can be distributed (eg downloaded or uploaded) online, directly between smart phones.
- at least part of the computer program product may be temporarily stored or temporarily created in a storage medium readable by a device such as a manufacturer's server, an application store server, or a relay server's memory.
- each component (eg, module or program) of the above-described components may include a single object or a plurality of entities, and some of the plurality of entities may be separately disposed in other components. there is.
- one or more components or operations among the aforementioned corresponding components may be omitted, or one or more other components or operations may be added.
- a plurality of components eg modules or programs
- the integrated component may perform one or more functions of each of the plurality of components identically or similarly to those performed by a corresponding component of the plurality of components prior to the integration. .
- the actions performed by a module, program, or other component are executed sequentially, in parallel, iteratively, or heuristically, or one or more of the actions are executed in a different order, or omitted. or one or more other actions may be added.
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Abstract
Description
Claims (15)
- 전자 장치에 있어서,제 1 슬롯이 형성된 공진기,상기 공진기의 제 1 슬롯 상의 제 1 지점 및 제 2 지점에 연결되어, 이물질 검출을 위해 상기 제 1 슬롯으로 전력을 제공하도록 설정된 제 1 인버터-상기 제 1 슬롯 상의 상기 제 1 지점 및 상기 제 2 지점은 상기 제 1 슬롯을 사이에 두고 맞은 편에 위치함-,상기 제 1 지점 및 상기 제 2 지점과 상이한 상기 공진기의 제 3 지점 및 제 4 지점에 연결되어, 상기 공진기로 전력을 전달하도록 설정된 제 2 인버터, 및컨트롤러를 포함하고, 상기 컨트롤러는,제 1 주파수를 가지는 제 1 전력을 상기 제 1 슬롯으로 인가하도록 상기 제 1 인버터를 제어하고,상기 제 1 슬롯에 상기 제 1 전력이 인가되는 동안, 상기 제 1 지점 및 상기 제 2 지점에 대한 적어도 하나의 제 1 임피던스를 확인하고,상기 적어도 하나의 제 1 임피던스에 기반하여, 상기 전자 장치에 인접한 외부 물체를 확인하고,상기 공진기에 상기 제 1 전력이 인가되는 기간과 적어도 일부 겹치는 기간 동안, 외부의 무선 전력 수신 장치에 무선으로 전력을 제공하기 위해 상기 제 1 주파수와 상이한 제 2 주파수를 가지는 제 2 전력을 상기 제 3 지점 및 상기 제 4 지점에 인가하도록 상기 제 2 인버터를 제어하도록 설정되는,전자 장치.
- 제 1 항에 있어서,상기 제 1 인버터에 연결되는 상기 제 1 지점과 상기 제 2 지점은, 상기 제 1 슬롯의 일단으로부터 제 1 거리만큼 이격된 위치에 위치하는,전자 장치.
- 제 1 항에 있어서,상기 공진기는, 루프 형태로 형성되고,상기 제 1 슬롯은, 상기 공진기의 루프 방향으로 길이를 갖는 형상으로 형성되는-상기 형상으로 형성된 상기 제 1 슬롯은 제 1 방향으로 연장되는 제 1 서브 슬롯과 상기 제 1 방향과 상이한 제 2 방향으로 연장되는 제 2 서브 슬롯, 및 상기 제 1 서브 슬롯 및 상기 제 2 서브 슬롯 사이의 제 3 서브 슬롯을 포함함-,전자 장치.
- 제 1 항에 있어서,상기 제 1 슬롯의 일단과 상기 공진기의 일단 사이의 거리, 및 상기 제 1 슬롯의 타단과 상기 공진기의 타단 사이의 거리는, 제 2 거리 이하인,전자 장치.
- 제 1 항에 있어서,상기 제 1 슬롯과 상기 공진기의 안쪽 면 사이의 거리는, 상기 제 1 슬롯과 상기 공진기의 바깥 쪽 면 사이의 거리 보다 큰,전자 장치.
- 제 1 항에 있어서,상기 제 1 지점 및 상기 제 2 지점에 대한 상기 적어도 하나의 제 1 임피던스를 확인하기 위한 제 1 센서를 더 포함하고,상기 제 1 센서는, 상기 제 1 인버터와 상기 공진기를 연결하는 제 1 커플러, 상기 제 1 커플러에 연결되는 제 1 변환기, 및 상기 제 1 변환기에 연결되는 제 1 위상 검출기를 포함하고,상기 컨트롤러는,상기 제 1 위상 검출기를 이용하여, 상기 제 1 지점 및 상기 제 2 지점에 대한 상기 적어도 하나의 제 1 임피던스의 적어도 하나의 제 1 기울기를 확인하도록 더 설정되는,전자 장치.
- 제 1 항에 있어서,상기 컨트롤러는,상기 적어도 하나의 제 1 임피던스의 적어도 하나의 제 1 기울기를 확인하고,상기 적어도 하나의 제 1 기울기가 제 1 기준값 이상인 것에 기반하여, 상기 외부 물체를 제 1 타입의 물체로 확인하고,상기 적어도 하나의 제 1 기울기가 상기 제 1 기준값 미만인 것에 기반하여, 상기 외부 물체를 제 2 타입의 물체로 확인하도록 더 설정되는,전자 장치.
- 제 7 항에 있어서,상기 컨트롤러는,상기 적어도 하나의 제 1 기울기가 상기 제 1 기준값 이상이고, 상기 적어도 하나의 제 1 기울기가 증가하는 것에 기반하여, 상기 제 1 타입의 물체인 상기 외부 물체 및 상기 전자 장치 사이의 거리가 감소하는 것으로 판단하고,상기 적어도 하나의 제 1 기울기가 상기 제 1 기준값 미만이고, 상기 적어도 하나의 제 1 기울기가 증가하는 것에 기반하여, 상기 제 2 타입의 물체인 상기 외부 물체 및 상기 전자 장치 사이의 거리가 증가하는 것으로 판단하도록 더 설정되는,전자 장치.
- 제 1 항에 있어서,상기 컨트롤러는,상기 제 1 전력이 인가되는 동안 확인되는 상기 적어도 하나의 제 1 임피던스에 기반하여 상기 외부 물체가 제 2 타입의 물체로 확인되는 것에 응답하여, 상기 제 2 전력의 제공을 중단하도록 더 설정되는,전자 장치.
- 제 1 항에 있어서,상기 공진기의 제 5 지점 및 제 6 지점에 연결되어, 상기 공진기로 전력을 제공하도록 설정된 제 3 인버터를 더 포함하고,상기 공진기의 상기 제 5 지점 및 상기 제 6 지점은 상기 공진기의 제 2 슬롯을 사이에 두고 맞은 편에 위치하고,상기 컨트롤러는,제 3 주파수를 가지는 제 3 전력을 상기 공진기로 인가하도록 상기 제 3 인버터를 제어하고,상기 공진기에 상기 제 3 전력이 인가되는 동안, 상기 제 5 지점 및 상기 제 6 지점에 대한 적어도 하나의 제 2 임피던스를 확인하고,상기 적어도 하나의 제 1 임피던스 및 상기 적어도 하나의 제 2 임피던스에 기반하여, 상기 전자 장치에 인접한 상기 외부 물체를 확인하도록 더 설정되는,전자 장치.
- 제 10 항에 있어서,상기 제 5 지점 및 상기 제 6 지점에 대한 상기 적어도 하나의 제 2 임피던스를 확인하기 위한 제 2 센서를 더 포함하고,상기 제 2 센서는, 상기 제 2 인버터와 상기 공진기를 연결하는 제 2 커플러, 상기 제 2 커플러에 연결되는 제 2 변환기, 및 상기 제 2 변환기에 연결되는 제 2 위상 검출기를 포함하고,상기 컨트롤러는,상기 제 2 위상 검출기를 이용하여, 상기 제 5 지점 및 상기 제 6 지점에 대한 상기 적어도 하나의 제 2 임피던스의 적어도 하나의 제 2 기울기를 확인하도록 더 설정되는,전자 장치.
- 전자 장치에 포함되는 공진기에 있어서,제 1 슬롯을 포함하고,상기 공진기는 루프 형태로 형성되고,상기 제 1 슬롯은 상기 공진기의 루프 방향으로된 길이를 갖는 형상으로 형성되고,상기 전자 장치는,이물질 검출을 위해, 상기 공진기에 제 1 주파수를 가지는 제 1 전력을 인가하도록, 상기 공진기의 제 1 지점 및 제 2 지점에 연결되는 제 1 인버터를 제어하고-상기 제 1 지점 및 상기 제 2 지점은 상기 제 1 슬롯을 사이에 두고 맞은 편에 위치함-,상기 공진기에 상기 제 1 전력이 인가되는 동안 확인되는, 상기 제 1 지점 및 상기 제 2 지점에 대한 적어도 하나의 제 1 임피던스에 기반하여, 상기 전자 장치에 인접한 외부 물체를 확인하고,상기 공진기에 상기 제 1 전력이 인가되는 기간과 적어도 일부 겹치는 기간 동안, 외부의 무선 전력 수신 장치에 전력을 제공하기 위해, 상기 제 1 주파수와 상이한 제 2 주파수를 가지는 제 2 전력을 인가하도록, 상기 제 1 지점 및 상기 제 2 지점과 상이한 상기 공진기의 제 3 지점 및 제 4 지점에 연결되는 제 2 인버터를 제어하도록 설정되는,공진기.
- 제 12 항에 있어서,상기 제 1 인버터에 연결되는 상기 제 1 지점과 상기 제 2 지점은, 상기 제 1 슬롯의 일단으로부터 제 1 거리만큼 이격된 위치에 위치하는,공진기.
- 제 12 항에 있어서,상기 형상의 상기 제 1 슬롯은 제 1 방향으로 연장되는 제 1 서브 슬롯과 상기 제 1 방향과 상이한 제 2 방향으로 연장되는 제 2 서브 슬롯, 및 상기 제 1 서브 슬롯 및 상기 제 2 서브 슬롯 사이의 제 3 서브 슬롯을 포함하는,공진기.
- 제 12 항에 있어서,제 2 슬롯을 더 포함하고,상기 제 2 슬롯은 상기 공진기의 상기 루프 방향을 따라 상기 제 1 슬롯과 상이한 위치에 형성되고,상기 공진기의 일단과 상기 제 1 슬롯 사이의 거리는, 상기 공진기의 타단과 상기 제 2 슬롯 사이의 거리 보다 큰,공진기.
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| EP22864987.7A EP4366087A4 (en) | 2021-08-30 | 2022-08-29 | WIRELESS POWER TRANSMISSION DEVICE FOR DETECTING EXTERNAL OBJECT AND RELATED METHOD |
| CN202280059366.9A CN117897864A (zh) | 2021-08-30 | 2022-08-29 | 用于检测外部对象的无线电力传输装置及其方法 |
| US17/898,866 US20230065772A1 (en) | 2021-08-30 | 2022-08-30 | Wireless power transmission device for detecting external object and method thereof |
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| KR20210151730 | 2021-11-05 | ||
| KR10-2021-0163723 | 2021-11-24 | ||
| KR1020210163723A KR20230032818A (ko) | 2021-08-30 | 2021-11-24 | 외부 물체를 감지하는 무선 전력 송신 장치 및 그 방법 |
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| KR20190064016A (ko) * | 2017-11-30 | 2019-06-10 | 삼성전기주식회사 | 무선 전력 송신 장치 및 그의 제어 방법 |
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