KR20240021073A - Electronic devices for transmitting and receiving power wirelessly and method of operation thereof - Google Patents

Abstract

The present invention relates to an electronic device for wirelessly transmitting and receiving power and an operating method thereof. The electronic device (230; 301; 400) includes: a converter (403) configured to perform a DC/DC power conversion operation; a power conversion circuit (402) electrically or operatively connected to the converter (403) and configured to perform an AC/DC power conversion operation; a coil (401) electrically or operatively connected to the power conversion circuit (402); a motion sensor (407) configured to sense a motion of the electronic device (230; 301; 400); and a controller (406) operatively connected to the converter (403), the power conversion circuit (402), or the motion sensor (407).

Description

Electronic devices for wirelessly transmitting and receiving power and their operating method {ELECTRONIC DEVICES FOR TRANSMITTING AND RECEIVING POWER WIRELESSLY AND METHOD OF OPERATION THEREOF}

Various embodiments of the present invention relate to an electronic device that wirelessly transmits and receives power and a method of operating the same.

Wireless power transmission technology using magnetic induction is a method of transmitting power using an electromagnetic field induced in a coil. The wireless power transmission device generates an electromagnetic field by applying current to the transmission coil, and receives wireless power by the generated electromagnetic field. By creating an induced electromotive force in the receiving coil of the device, power can be transmitted wirelessly.

An electronic device that transmits and receives power wirelessly (e.g., a wireless power transceiver) may wirelessly transmit power to another electronic device or receive power wirelessly from another electronic device. An electronic device that transmits and receives power wirelessly can be implemented to transmit or receive power using a single coil. An electronic device that transmits and receives power wirelessly may perform an operation to wirelessly transmit power to another electronic device in a transmission mode. An electronic device that transmits and receives power wirelessly may perform an operation to wirelessly receive power from another electronic device in a reception mode.

An electronic device that transmits and receives power wirelessly can operate in a transmitting mode or receiving mode through user settings of the electronic device, input through a physical button on the electronic device, or a Hall IC included in the electronic device. It is possible to determine whether to operate in transmission mode or reception mode based on confirmation of information through or signals through out-band communication.

According to one embodiment, the electronic device includes a converter configured to perform a DC/DC power conversion operation, a power conversion circuit connected to the converter and configured to perform an AC/DC power conversion operation, and a coil connected to the power conversion circuit. , may include a motion sensor and a controller configured to detect motion of the electronic device. The controller may be set to check the amount of change in impedance of at least one point within the electronic device. The controller may be set to check the amount of motion change of the electronic device through the motion sensor based on the amount of impedance change exceeding a first reference value. The controller may be set to set a delay time based on the amount of motion change exceeding a second reference value. The controller may be set to transmit first driving power to an external electronic device through the coil as the delay time elapses.

According to one embodiment, a method of operating an electronic device may include checking the amount of change in impedance of at least one point within the electronic device. The method may include checking the amount of motion change of the electronic device through a motion sensor of the electronic device, based on the amount of impedance change exceeding a first reference value. The method may include setting a delay time based on the amount of motion change exceeding a second reference value. The method may include transmitting first driving power to an external electronic device through a coil of the electronic device as the delay time elapses.

According to one embodiment, in a computer readable recording medium storing instructions set to perform at least one operation by a controller of an electronic device, the at least one operation includes: It may include an operation of checking the amount of change in impedance of at least one point. The at least one operation may include checking the amount of motion change of the electronic device through the motion sensor of the electronic device, based on the amount of impedance change exceeding a first reference value. The at least one operation may include setting a delay time based on the amount of motion change exceeding a second reference value. The at least one operation may include transmitting first driving power to an external electronic device through a coil of the electronic device as the delay time elapses.

1 is a block diagram of a wireless power transmission device and a wireless power reception device according to an embodiment.
FIG. 2 is a diagram for explaining a device included in a wireless power transmission system according to an embodiment.
3 is a block diagram of an electronic device in a network environment, according to various embodiments.
Figure 4 is a block diagram of an electronic device included in a wireless power transmission system, according to an embodiment.
Figure 5 is a block diagram of an electronic device included in a wireless power transmission system, according to an embodiment.
FIG. 6 is a diagram for explaining a sensing pattern of an electronic device, according to an embodiment.
Figure 7 is a flowchart of a method of operating an electronic device, according to one embodiment.
Figure 8 is a flowchart of a method of operating an electronic device, according to one embodiment.
FIG. 9 is a diagram for explaining the operation of an electronic device, according to an embodiment.
FIG. 10 is a diagram for explaining the operation of an electronic device, according to an embodiment.

1 is a block diagram of a wireless power transmission device and a wireless power reception device according to an embodiment.

Referring to FIG. 1, a wireless power transmission device 101 according to an embodiment may wirelessly transmit power 106 to a wireless power reception device 103. Alternatively, the wireless power transmission device 101 may receive information 107 from the wireless power reception device 103. In one example, the wireless power transmission device 101 may transmit power 106 according to an induction method. When the wireless power transmission device 101 is inductive, the wireless power transmission device 101 may include, for example, a power source, a DC-DC conversion circuit (e.g., DC/DC converter), and a DC-AC conversion. It may include at least one of a circuit (eg, an inverter), an amplification circuit, an impedance matching circuit, at least one capacitor, at least one coil, or a communication modulation circuit. At least one capacitor may form a resonance circuit together with at least one coil. The wireless power transmission device 101 may implement at least part of the method defined in the Qi standard of the wireless power consortium (WPC). The wireless power transmission device 101 may include a coil that can generate an induced magnetic field when current flows according to an induction method. The operation of the wireless power transmission device 101 to generate an induced magnetic field can be expressed as the wireless power transmission device 101 transmitting power 106 wirelessly. In addition, in the coil of the wireless power receiving device 103, induced electromotive force (or current, voltage, and/or power) may be generated by a magnetic field generated in the surroundings according to a resonance method or an induction method. The process of generating induced electromotive force through the coil can be expressed as the wireless power receiving device 103 receiving power 106 wirelessly.

The wireless power transmission device 101 according to one embodiment may perform communication with the wireless power reception device 103. For example, the wireless power transmission device 101 may communicate with the wireless power reception device 103 according to an in-band method. The wireless power transmitting device 101 may modulate data to be transmitted according to, for example, frequency shift keying (FSK) modulation, and the wireless power receiving device 103 may perform amplitude shift keying (ASK) modulation. ) Information 107 can be provided by performing modulation according to the modulation method. The wireless power transmission device 101 may check the information 107 provided by the wireless power reception device 103 based on the amplitude of the current and/or voltage applied to the transmission coil. In FIG. 1, the wireless power receiving device 103 is shown as transmitting information 107 directly to the wireless power transmitting device 101, but this is only for easy understanding, and the wireless power receiving device 103 Those skilled in the art will understand that only controls the on/off of at least one internal switch. The operation of performing modulation based on the ASK modulation method and/or FSK modulation method can be understood as an operation of transmitting data (or packets) according to the in-band communication method, and can be understood as the operation of transmitting data (or packets) according to the ASK demodulation method and/or FSK demodulation method. The operation of performing demodulation based on a method can be understood as an operation of receiving data (or packets) according to an in-band communication method.

In this document, the wireless power transmission device 101 or the wireless power reception device 103 performing a specific operation refers to various hardware included in the wireless power transmission device 101 or the wireless power reception device 103, for example. For example, a controller such as a micro controlling unit (MCU), field programmable gate array (FPGA), application specific integrated circuit (ASIC), microprocessor, or application processor (AP) performs a specific operation. It can mean. Alternatively, the wireless power transmission device 101 or the wireless power reception device 103 performing a specific operation may mean that the controller controls other hardware to perform a specific operation. Alternatively, when the wireless power transmitting device 101 or the wireless power receiving device 103 performs a specific operation, the storage circuit (e.g., the memory of FIG. 3) of the wireless power transmitting device 101 or the wireless power receiving device 103 This may mean causing a controller or other hardware to perform a specific operation as at least one instruction for performing a specific operation stored in (330)) is executed.

FIG. 2 is a diagram for explaining a device included in a wireless power transmission system according to an embodiment.

The wireless power transmission device 210 of FIG. 2 may be the wireless power transmission device 101 of FIG. 1 . The wireless power receiving device 220 of FIG. 2 may be the wireless power receiving device 103 of FIG. 1 . The wireless power transmission device 210 may wirelessly transmit power 212 to the wireless power reception device 220.

The electronic device 230 of FIG. 2 may operate as a wireless power transmission device (e.g., the wireless power transmission device 101 of FIG. 1) or a wireless power reception device (e.g., the wireless power reception device 103 of FIG. 1). ))).

According to one embodiment, the electronic device 230 is a wireless power reception device and can wirelessly receive power 213 from the wireless power transmission device 210. In this case, the description of the wireless power reception device 103 may be applied to the electronic device 230.

According to one embodiment, the electronic device 230 is a wireless power transmission device and can wirelessly transmit power 232 to the wireless power reception device 220. In this case, the description of the wireless power transmission device 101 may be applied to the electronic device 230.

The coil included in the electronic device 230 may be used as a receiving coil as the electronic device 230 operates as a wireless power receiving device, and as a transmitting coil as the electronic device 230 operates as a wireless power transmitting device. It may also be used.

The AC-DC conversion circuit (e.g., a circuit operating as an inverter or rectifier) included in the electronic device 230 may be used as a rectifier as the electronic device 230 operates as a wireless power reception device, and the electronic device ( As 230) operates as a wireless power transmission device, it can also be used as an inverter.

The DC-DC conversion circuit (e.g., DC/DC converter) included in the electronic device 230 may be used as a receiving converter as the electronic device 230 operates as a wireless power reception device, and the electronic device 230 ) operates as a wireless power transmission device, so it can also be used as a transmission converter.

Other components included in the electronic device 230 may also operate for reception as the electronic device 230 operates as a wireless power reception device, and may operate for transmission as the electronic device 230 operates as a wireless power transmission device. It can operate as

According to one embodiment, the electronic device 230 may be the electronic device 301 of FIG. 3 .

The other electronic device 240 of FIG. 2 may operate as a wireless power transmission device (e.g., the wireless power transmission device 101 of FIG. 1) or may operate as a wireless power reception device (e.g., the wireless power transmission device 101 of FIG. 1). It may be a device that may operate as 103)).

Other electronic devices 240 may be understood similarly to the electronic device 230 . According to one embodiment, the other electronic device 240 may be the electronic device 302 of FIG. 3 .

Electronic device 230 may wirelessly transmit power 234 to another electronic device 240 . The electronic device 230 may wirelessly receive power 243 from another electronic device 240.

FIG. 3 is a block diagram of an electronic device 301 in a network environment 300, according to various embodiments. Referring to FIG. 3, in the network environment 300, the electronic device 301 communicates with the electronic device 302 through a first network 398 (e.g., a short-range wireless communication network) or a second network 399. It is possible to communicate with the electronic device 304 or the server 308 through (e.g., a long-distance wireless communication network). According to one embodiment, the electronic device 301 may communicate with the electronic device 304 through the server 308. According to one embodiment, the electronic device 301 includes a processor 320, a memory 330, an input module 350, an audio output module 355, a display module 360, an audio module 370, and a sensor module ( 376), interface 377, connection terminal 378, haptic module 379, camera module 380, power management module 388, battery 389, communication module 390, subscriber identification module 396 , or may include an antenna module 397. In some embodiments, at least one of these components (eg, the connection terminal 378) may be omitted, or one or more other components may be added to the electronic device 301. In some embodiments, some of these components (e.g., sensor module 376, camera module 380, or antenna module 397) are integrated into one component (e.g., display module 360). It can be.

The processor 320, for example, executes software (e.g., program 340) to operate at least one other component (e.g., hardware or software component) of the electronic device 301 connected to the processor 320. It can be controlled and various data processing or calculations can be performed. According to one embodiment, as at least part of data processing or computation, the processor 320 stores commands or data received from another component (e.g., sensor module 376 or communication module 390) in volatile memory 332. The commands or data stored in the volatile memory 332 can be processed, and the resulting data can be stored in the non-volatile memory 334. According to one embodiment, the processor 320 may include a main processor 321 (e.g., a central processing unit or an application processor) or an auxiliary processor 323 that can operate independently or together (e.g., a graphics processing unit, a neural network processing unit ( It may include a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor). For example, if the electronic device 301 includes a main processor 321 and a auxiliary processor 323, the auxiliary processor 323 may be set to use lower power than the main processor 321 or be specialized for a designated function. You can. The auxiliary processor 323 may be implemented separately from the main processor 321 or as part of it.

The auxiliary processor 323 may, for example, act on behalf of the main processor 321 while the main processor 321 is in an inactive (e.g., sleep) state, or while the main processor 321 is in an active (e.g., application execution) state. ), together with the main processor 321, at least one of the components of the electronic device 301 (e.g., the display module 360, the sensor module 376, or the communication module 390) At least some of the functions or states related to can be controlled. According to one embodiment, coprocessor 323 (e.g., image signal processor or communication processor) may be implemented as part of another functionally related component (e.g., camera module 380 or communication module 390). there is. According to one embodiment, the auxiliary processor 323 (eg, neural network processing unit) may include a hardware structure specialized for processing artificial intelligence models. Artificial intelligence models can be created through machine learning. For example, such learning may be performed in the electronic device 301 itself, where artificial intelligence is performed, or may be performed through a separate server (e.g., server 308). Learning algorithms may include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but It is not limited. An artificial intelligence model may include multiple artificial neural network layers. Artificial neural networks include deep neural network (DNN), convolutional neural network (CNN), recurrent neural network (RNN), restricted boltzmann machine (RBM), belief deep network (DBN), bidirectional recurrent deep neural network (BRDNN), It may be one of deep Q-networks or a combination of two or more of the above, but is not limited to the examples described above. In addition to hardware structures, artificial intelligence models may additionally or alternatively include software structures.

The memory 330 may store various data used by at least one component (eg, the processor 320 or the sensor module 376) of the electronic device 301. Data may include, for example, input data or output data for software (e.g., program 340) and instructions related thereto. Memory 330 may include volatile memory 332 or non-volatile memory 334.

The program 340 may be stored as software in the memory 330 and may include, for example, an operating system 342, middleware 344, or application 346.

The input module 350 may receive commands or data to be used in a component of the electronic device 301 (e.g., the processor 320) from outside the electronic device 301 (e.g., a user). The input module 350 may include, for example, a microphone, mouse, keyboard, keys (eg, buttons), or digital pen (eg, stylus pen).

The sound output module 355 may output sound signals to the outside of the electronic device 301. The sound output module 355 may include, for example, a speaker or a receiver. Speakers can be used for general purposes such as multimedia playback or recording playback. The receiver can be used to receive incoming calls. According to one embodiment, the receiver may be implemented separately from the speaker or as part of it.

The display module 360 can visually provide information to the outside of the electronic device 301 (eg, a user). The display module 360 may include, for example, a display, a hologram device, or a projector, and a control circuit for controlling the device. According to one embodiment, the display module 360 may include a touch sensor configured to detect a touch, or a pressure sensor configured to measure the intensity of force generated by the touch.

The audio module 370 can convert sound into an electrical signal or, conversely, convert an electrical signal into sound. According to one embodiment, the audio module 370 acquires sound through the input module 350, the sound output module 355, or an external electronic device (e.g., directly or wirelessly connected to the electronic device 301). Sound may be output through an electronic device 302 (e.g., speaker or headphone).

The sensor module 376 detects the operating state (e.g., power or temperature) of the electronic device 301 or the external environmental state (e.g., user state) and generates an electrical signal or data value corresponding to the detected state. can do. According to one embodiment, the sensor module 376 includes, for example, a gesture sensor, a gyro sensor, an air pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, It may include a temperature sensor, humidity sensor, or light sensor.

The interface 377 may support one or more designated protocols that can be used to connect the electronic device 301 directly or wirelessly with an external electronic device (e.g., the electronic device 302). According to one embodiment, the interface 377 may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

The connection terminal 378 may include a connector through which the electronic device 301 can be physically connected to an external electronic device (eg, the electronic device 302). According to one embodiment, the connection terminal 378 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (eg, a headphone connector).

The haptic module 379 can convert electrical signals into mechanical stimulation (e.g., vibration or movement) or electrical stimulation that the user can perceive through tactile or kinesthetic senses. According to one embodiment, the haptic module 379 may include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

The camera module 380 can capture still images and moving images. According to one embodiment, the camera module 380 may include one or more lenses, image sensors, image signal processors, or flashes.

The power management module 388 can manage power supplied to the electronic device 301. According to one embodiment, the power management module 388 may be implemented as at least a part of, for example, a power management integrated circuit (PMIC).

The battery 389 may supply power to at least one component of the electronic device 301. According to one embodiment, the battery 389 may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

Communication module 390 is configured to provide a direct (e.g., wired) communication channel or wireless communication channel between electronic device 301 and an external electronic device (e.g., electronic device 302, electronic device 304, or server 308). It can support establishment and communication through established communication channels. Communication module 390 operates independently of processor 320 (e.g., an application processor) and may include one or more communication processors that support direct (e.g., wired) communication or wireless communication. According to one embodiment, the communication module 390 may be a wireless communication module 392 (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 394 (e.g., : LAN (local area network) communication module, or power line communication module) may be included. Among these communication modules, the corresponding communication module is a first network 398 (e.g., a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network 399 (e.g., legacy It may communicate with an external electronic device 304 through a telecommunication network such as a cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., LAN or WAN). These various types of communication modules may be integrated into one component (e.g., a single chip) or may be implemented as a plurality of separate components (e.g., multiple chips). The wireless communication module 392 uses subscriber information (e.g., International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module 396 within a communication network such as the first network 398 or the second network 399. The electronic device 301 can be confirmed or authenticated.

The wireless communication module 392 may support 5G networks after 4G networks and next-generation communication technologies, for example, NR access technology (new radio access technology). NR access technology provides high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and access to multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low latency). -latency communications)) can be supported. The wireless communication module 392 may support high frequency bands (e.g., mmWave bands), for example, to achieve high data rates. The wireless communication module 392 uses various technologies to secure performance in high frequency bands, for example, beamforming, massive MIMO (multiple-input and multiple-output), and full-dimensional multiplexing. It can support technologies such as input/output (FD-MIMO: full dimensional MIMO), array antenna, analog beam-forming, or large scale antenna. The wireless communication module 392 may support various requirements specified in the electronic device 301, an external electronic device (e.g., electronic device 304), or a network system (e.g., second network 399). According to one embodiment, the wireless communication module 392 supports Peak data rate (e.g., 20 Gbps or more) for realizing eMBB, loss coverage (e.g., 164 dB or less) for realizing mmTC, or U-plane latency (e.g., 164 dB or less) for realizing URLLC. Example: Downlink (DL) and uplink (UL) each of 0.5 ms or less, or round trip 1 ms or less) can be supported.

The antenna module 397 may transmit or receive signals or power to or from the outside (e.g., an external electronic device). According to one embodiment, the antenna module 397 may include an antenna including a radiator made of a conductor or a conductive pattern formed on a substrate (eg, PCB). According to one embodiment, the antenna module 397 may include a plurality of antennas (eg, an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network such as the first network 398 or the second network 399 is, for example, connected to the plurality of antennas by the communication module 390. can be selected Signals or power may be transmitted or received between the communication module 390 and an external electronic device through the selected at least one antenna. According to some embodiments, in addition to the radiator, other components (eg, radio frequency integrated circuit (RFIC)) may be additionally formed as part of the antenna module 397.

According to one embodiment, the antenna module 397 may form a mmWave antenna module. According to one embodiment, a mmWave antenna module includes: a printed circuit board, an RFIC disposed on or adjacent to a first side (e.g., bottom side) of the printed circuit board and capable of supporting a designated high frequency band (e.g., mmWave band); And a plurality of antennas (e.g., array antennas) disposed on or adjacent to the second side (e.g., top or side) of the printed circuit board and capable of transmitting or receiving signals in the designated high frequency band. can do.

At least some of the components are connected to each other through a communication method between peripheral devices (e.g., bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)) and signal ( (e.g. commands or data) can be exchanged with each other.

According to one embodiment, commands or data may be transmitted or received between the electronic device 301 and the external electronic device 304 through the server 308 connected to the second network 399. Each of the external electronic devices 302 or 304 may be of the same or different type as the electronic device 301. According to one embodiment, all or part of the operations performed in the electronic device 301 may be executed in one or more of the external electronic devices 302, 304, or 308. For example, when the electronic device 301 must perform a function or service automatically or in response to a request from a user or another device, the electronic device 301 may perform the function or service instead of executing the function or service on its own. Alternatively, or additionally, one or more external electronic devices may be requested to perform at least part of the function or service. One or more external electronic devices that have received the request may execute at least part of the requested function or service, or an additional function or service related to the request, and transmit the result of the execution to the electronic device 301. The electronic device 301 may process the result as is or additionally and provide it as at least part of a response to the request. For this purpose, for example, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology can be used. The electronic device 301 may provide an ultra-low latency service using, for example, distributed computing or mobile edge computing. In another embodiment, the external electronic device 304 may include an Internet of Things (IoT) device. Server 308 may be an intelligent server using machine learning and/or neural networks. According to one embodiment, the external electronic device 304 or server 308 may be included in the second network 399. The electronic device 301 may be applied to intelligent services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology and IoT-related technology.

Figure 4 is a block diagram of an electronic device included in a wireless power transmission system, according to an embodiment.

The electronic device 400 of FIG. 4 may be the electronic device 230 of FIG. 2 or another electronic device 240. The electronic device 400 may operate as a wireless power transmitting device (e.g., the wireless power transmitting device 101 of FIG. 1) or as a wireless power receiving device (e.g., the wireless power receiving device 103 of FIG. 1). It may be a device that may operate.

Referring to FIG. 4, the electronic device 400 includes a coil 401, a power conversion circuit 402, a converter 403, a charger 404, a battery 405, a controller 406, and a motion sensor 407. ) may include.

The controller 406 of FIG. 4 (e.g., the processor 320 of FIG. 3) is a micro controlling unit (MCU), a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a microprocessor, or an application (AP). processor). The operation of the electronic device 400 may be controlled by the controller 406. The operation of the electronic device 400 may be understood as the operation of the controller 406.

The converter 403 may be a direct current-direct current conversion circuit. For example, converter 403 may be configured to perform DC/DC power conversion operations. There are no restrictions on how the converter 403 is implemented. According to one embodiment, the converter 403 may operate as a transmission converter. The transmission converter may be a converter used for operations related to wireless power transmission when the electronic device 400 (eg, electronic device 230) transmits wireless power. The converter 403 can convert the voltage of the received power and provide it to the power conversion circuit 402. The converter 403 can change the voltage of the input DC power and provide DC power with the changed voltage (or driving voltage) to the power conversion circuit 402. The converter 403 may perform low drop-output (LDO) conversion. The converter 403 may be implemented as a converter that operates as a switch. The converter 403 may be a linear regulator that operates even at a low input/output potential difference between both ends of the converter 403. The converter 403 may include a diode and a transistor (eg, a field effect transistor (FET)). According to one embodiment, the converter 430 may operate as a receiving converter. The receiving converter may be a converter used for operations related to receiving wireless power when the electronic device 400 (eg, electronic device 230) receives wireless power.

The power conversion circuit 402 may be an alternating current-direct current conversion circuit. For example, the power conversion circuit 402 may be configured to perform AC/DC power conversion operations. The power conversion circuit 402 may be connected to the converter 403. According to one embodiment, when the electronic device 400 transmits wireless power, the power conversion circuit 402 may operate as an inverter that converts direct current to alternating current. For example, alternating current power can be output using the driving voltage provided from the converter 403. A plurality of switches included in the power conversion circuit 402 may form, for example, a full bridge circuit, but there is no limitation on the number of switches or the type of bridge circuit. For example, when a full bridge circuit is configured, one end of the coil 401 may be connected to a connection point between a pair of switches through a capacitor, and the other end of the coil 401 may be connected to another pair of switches. It can be connected to a connection point between. A plurality of switches (eg, first switch, second switch, third switch, fourth switch) included in the power conversion circuit 402 may be controlled to be in an on or off state. For example, to generate alternating current power, the controller 406 may control the first and third switches to be on during the first period while controlling the second and fourth switches to be off, and During the second period, the first switch and the third switch can be controlled in the off state while the second switch and the fourth switch can be controlled in the on state, and the above-described control operations can be repeatedly performed. The controller 406 may provide control signals for generating the above-described AC power to a plurality of switches included in the power conversion circuit 402. Here, not only outputting the control signal but also refraining from outputting the control signal can be referred to as control of the controller 406. For example, when the controller 406 outputs a first control signal for generating alternating current power having a first frequency to the power conversion circuit 402, the controller 406 controls the first control signal for the period corresponding to the first frequency. Outputting a control signal for controlling the first switch and the third switch to the on state, and then outputting a control signal control signal for controlling the second switch and the fourth switch to the on state for a period corresponding to the first frequency, This may mean repeating the above-described output operations. Meanwhile, the controller 406 outputs a second control signal for generating alternating current power having a second frequency to the power conversion circuit 402 when the controller 406 operates the first switch for a period corresponding to the second frequency. and outputting a control signal control signal for controlling the third switch in the on state, and then outputting a control signal control signal for controlling the second switch and the fourth switch in the on state for a period corresponding to the second frequency, This may mean repeating the above-described output operations, and in this case, the period corresponding to the second frequency may be different from the period corresponding to the first frequency. The controller 406 may control at least one of the converter 403 or the power conversion circuit 402 so that power is applied to the coil 401. According to one embodiment, when the electronic device 400 (e.g., the electronic device 230) receives wireless power, the power conversion circuit 402 may operate as a rectifier that converts alternating current to direct current.

AC power generated by the power conversion circuit 402 may be applied to the coil 401. The coil 401 may be connected to the power conversion circuit 402. The coil 401 can form a resonance circuit with a capacitor. The coil 401 may form a magnetic field based on applied alternating current power. As the magnetic field passing through the cross section of the coil 401 changes over time, induced electromotive force (eg, current, voltage, or power) may be induced in the coil 401. The power conversion circuit 402 may output direct current power according to the induced electromotive force induced in the coil 401. Power conversion circuit 402 may operate as a rectifier. The electronic device 400 (e.g., the controller 406) can check the output voltage (Vrect) output from the power conversion circuit 402 to the converter 403.

At least a portion of the charger 404 may perform buck conversion and/or boost conversion. For example, the charger 404 may include a 3-level converter. The charger 404 may perform boost conversion to supply power to the power conversion circuit 402. The charger 404 may perform a primary conversion operation, and the converter 403 may perform a secondary conversion operation. The charger 404 may provide power to charge the battery 405 using power provided from the converter 403. The battery 405 may receive charging power from the charger 404.

The motion sensor 407 may be a sensor for checking the motion of the electronic device 400. The controller 406 can check the amount of change in motion of the electronic device 400 using the motion sensor 407. The controller 406 can use the motion sensor 407 to determine whether the electronic device 400 is in a stationary state in which the amount of motion change is 0 or in a moving state in which the amount of motion change in the electronic device 400 exceeds 0. . There are no restrictions on how the motion sensor 407 is implemented.

According to one embodiment, the electronic device 400 may include a demodulation circuit. The demodulation circuit may demodulate a signal applied to the coil 401 (eg, a voltage applied to both ends of the coil 401) and output a demodulated signal. For example, the demodulation circuit may include a mixer and/or a multiplier circuit to remove a carrier wave component for wireless power transmission (eg, 100 to 210 kHz, which is the frequency of alternating current power). The demodulation circuit may additionally filter (low-pass filter) the demodulated signal and output it. The demodulation circuit may include a low-pass filter.

Figure 5 is a block diagram of an electronic device included in a wireless power transmission system, according to an embodiment. FIG. 5 can be explained with reference to FIGS. 4 and 6 . FIG. 6 is a diagram for explaining a sensing pattern of an electronic device, according to an embodiment.

Referring to FIG. 5, in addition to the configuration of FIG. 4, the electronic device 400 includes a first switch 501, a second switch 502, a power source 503, a sensing pattern 504, or a sensing circuit ( 506) may include at least one of the following.

For example, power provided by the power source 503 of the electronic device 400 may be provided to the converter 403. The power source 503 may include at least one of an interface for connection to an external travel adapter (TA) or a power management integrated circuit (PMIC). The power source 503 may provide, for example, direct current power to the converter 403, but there is no limitation on the form of power provided.

The first switch 501 and the second switch 502 may be implemented as positive "??* switches, but there is no limitation on the implementation method of the first switch 501 and the second switch 502. For example, For example, the first switch 501 and the second switch 502 may each include two diodes.

The first switch 501 may be connected to the converter 403. The first terminal of the converter 403 may be connected to the power conversion circuit 402, and the second terminal of the converter 403 may be connected to the first switch 501. The controller 406 can control the flow of current within the electronic device 400 by controlling the first switch 501. For example, when the first switch 501 is turned on in the first direction (e.g., the direction output from the converter 403), the power output from the converter 403 is directed to the first switch 501. However, the power input to the converter 403 cannot pass through the first switch 501. When the first switch 501 is turned on in the second direction (e.g., the direction input to the converter 403), the power output from the converter 403 cannot pass through the first switch 501. , power input to the converter 403 may pass through the first switch 501. The controller 406 may control the first switch 501 to be turned off in both directions.

Second switch 502 may be connected to power source 503. The controller 406 may control the flow of current within the electronic device 400 by controlling the second switch 502. For example, when the second switch 502 is turned on in the first direction (e.g., the direction input to the power source 503), the power output from the power source 503 is connected to the second switch 502. ), but the power input to the power source 503 can pass through the second switch 502. When the second switch 502 is turned on in the second direction (e.g., the direction output from the power source 503), the power output from the power source 503 passes through the second switch 502. However, the power input to the power source 503 cannot pass through the second switch 502. The controller 406 may control the second switch 502 to be turned off in both directions.

The electronic device 400 uses the sensing pattern 504 disposed in the area where the coil 401 is located to sense external objects (e.g., the wireless power transmitting device 210, the wireless power receiving device 220, or other electronic devices). Impedance changes due to approaching or mounting the device 240 can be confirmed. The controller 406 may apply designated power to the sensing pattern 504. For example, the controller 406 may apply designated power to the sensing pattern 504 continuously or periodically.

Referring to FIG. 6, the sensing pattern 504 may have a specific shape that does not affect the electronic device 400 transmitting power wirelessly. The sensing pattern 504 may include an open loop or single ended coil. Based on the end point of the sensing pattern 504, one point (e.g., 612 in FIG. 6) is connected to the controller 406 (or the sensing circuit 506), and at least one other point (e.g., 611 in FIG. 6) is connected to the controller 406 (or sensing circuit 506). ) may not be connected to the controller 406 (or the sensing circuit 506). An end point (e.g., 611 in FIG. 6 ) of the sensing pattern 504 that is not connected to the controller 406 (or the sensing circuit 506) may be in an open state.

Referring to FIG. 6, the sensing pattern 504 may have a specific pattern that does not affect the electronic device 400 wirelessly transmitting power. The sensing pattern 504 may include a coil having a grid-shaped pattern on a substrate. The specific pattern of the sensing pattern 504 disclosed in FIG. 6 is an example, and the pattern of the sensing pattern 504 is not limited to the embodiment of FIG. 6 . The sensing pattern 504 may include a plurality of layers (or coils having a plurality of layers) arranged in different layers with respect to the substrate. The plurality of layers (or coils having a plurality of layers) may be arranged to form a grid-shaped pattern. Each of the plurality of layers (or coils having a plurality of layers) may be electrically connected through one point of the substrate.

Referring to FIG. 6, the sensing pattern 504 may be placed in a location that does not affect the wireless power transmission of the electronic device 400. The sensing pattern 504 may be located in the center area of the area where the coil 401 is disposed. The sensing pattern 504 may be placed in an empty center space inside (or inside) the coil 401 so as not to overlap the coil 401. At least a portion of the sensing pattern 504 may overlap the coil 401. Referring to FIG. 6, when a point (e.g., 612 in FIG. 6) with respect to the end point of the sensing pattern 504 exists outside the area where the coil 401 is disposed, the At least a portion may overlap with the coil 401. A portion of the sensing pattern 504 that overlaps the coil 401 may be located on the opposite side of the radial direction of the coil 401. For example, when the radial direction of the coil 401 is toward the outside of the housing, the coil 401 may be located between the housing and a portion of the sensing pattern 504 that overlaps the coil 401. When a point (e.g., 612 in FIG. 6) exists in the center area of the area where the coil 401 is placed based on the end point of the sensing pattern 504, the sensing pattern 504 and the coil 401 are They may not overlap. The sensing pattern 504 may be connected to the controller 406 (or the sensing circuit 506) through another layer in the center area of the area where the coil 401 is disposed.

The sensing circuit 506 may check the impedance value between the sensing pattern 504 and the external object as the external object approaches or touches (or is mounted on) the electronic device 400. The sensing circuit 506 may transmit information about the confirmed impedance value (impedance value or impedance change amount) to the controller 406.

The controller 406 may determine whether to transmit a ping signal based on information about the impedance value. The controller 406 may compare the amount of impedance change corresponding to the impedance change with a designated reference value. The controller 406 may determine whether to transmit a ping signal based on a comparison between the impedance change amount and the reference value. For example, the impedance change is the difference between the impedance value confirmed when the external object is not approaching or mounted on the electronic device 400 and the impedance value confirmed when the external object is approaching or mounted on the electronic device 400. It can mean.

The controller 406 can reduce standby power consumption of the electronic device 400 by transmitting a ping signal (or ping energy) only when the impedance change in the area where the coil 401 is located is greater than the reference value.

At least some of the operations of the electronic device 400 described below may be performed by the controller 406. However, for convenience of explanation, the electronic device 101 may be described as performing the corresponding operations.

Figure 7 is a flowchart of a method of operating an electronic device, according to one embodiment. FIG. 7 can be explained with reference to FIGS. 4, 5, and 6.

At least some of the operations in FIG. 7 may be omitted. The operation order of the operations in FIG. 7 may be changed. Operations other than the operations of FIG. 7 may be performed before, during, or after the operations of FIG. 7 are performed.

Referring to FIG. 7 , in operation 701, according to one embodiment, the electronic device 400 (eg, the controller 406) may check the amount of impedance change at at least one point within the electronic device 400. The electronic device 400 can check the amount of change in impedance of the coil 401. The electronic device 400 can check the amount of change in impedance of the sensing pattern 504 through the sensing circuit 506. The electronic device 400 may check the amount of change in impedance of at least one point within the electronic device 400 in the reception mode. The reception mode may be a mode in which the electronic device 400 operates as a wireless power reception device. The reception mode will be described later in FIG. 8.

In operation 703, according to one embodiment, the electronic device 400 (e.g., the controller 406) may compare the amount of change in impedance of at least one point within the electronic device 400 with a reference value (e.g., a first reference value). there is. The electronic device 400 transmits a ping signal (or ping energy) only when the impedance change at at least one point (e.g., in the area where the coil 401 is located) satisfies a specified condition, and the electronic device 400 ) can reduce standby power consumption. The electronic device 400 may not transmit a ping signal when the amount of impedance change at at least one point within the electronic device 400 is less than or equal to the first reference value. For example, when the amount of impedance change at at least one point within the electronic device 400 is less than or equal to the first reference value, the electronic device 400 may continuously or periodically check the amount of impedance change. The electronic device 400 may transmit a ping signal according to a specified condition based on the impedance change at at least one point within the electronic device 400 exceeding the first reference value.

In operation 705, according to one embodiment, the electronic device 400 (eg, the controller 406) may check the amount of change in motion of the electronic device 400. The electronic device 400 may check the amount of change in motion of the electronic device 400 through the motion sensor 407 . The electronic device 400 may check the amount of motion change of the electronic device 400 through the sensor 407 based on the fact that the amount of impedance change at at least one point within the electronic device 400 exceeds the first reference value. . The electronic device 400 may check the amount of motion change before checking the amount of impedance change, while checking the amount of impedance change, or after checking the amount of impedance change.

In operation 707, according to one embodiment, the electronic device 400 (e.g., the controller 406) may compare the amount of motion change of the electronic device 400 with a reference value (e.g., a second reference value).

In operation 709, according to one embodiment, the electronic device 400 (e.g., the controller 406) determines that the amount of motion change of the electronic device 400 (e.g., the amount of motion change identified in operation 705) is equal to a second reference value (e.g. : 707 The delay time can be set based on exceeding the second reference value of the operation. “Delay time” refers to the time when the electronic device 400 receives the first driving power (e.g., through the coil 401) from the time when specified conditions (e.g., impedance change amount > first reference value, and motion change amount > second reference value) are satisfied. : This may be the time until a ping signal is transmitted. The delay time can be set longer than the default time. “Basic time” refers to the time when specified conditions (e.g., impedance change amount > first reference value, and motion change amount ≤ second reference value) are satisfied, when the electronic device 400 receives the first driving power (e.g., through the coil 401). : This may be the time until a ping signal is transmitted. The basic time will be further explained in operation 715. For example, when a default time (e.g., 550 ms) is applied to the electronic device 400, the electronic device 400 generates the first driving power (e.g., a ping signal) according to the elapse of the default time (e.g., 550 ms). When transmitting, and a delay time (e.g., 650 m) is applied to the electronic device 400, the electronic device 400 transmits the first driving power (e.g., ping signal) according to the elapse of the delay time (e.g., 650 m). can be transmitted. “Driving power (e.g., ping signal)” may be power for driving an electronic device (e.g., the wireless power receiver 220 or another electronic device 240) around the electronic device 400. As an electronic device (e.g., wireless power receiver 220 or another electronic device 240) surrounding the electronic device 400 receives driving power (e.g., a ping signal) transmitted from the electronic device 400, It may drive at least one internal component (e.g., at least one communication module for in-band communication or out-band communication).

An example of setting the delay time is as follows. However, the method of setting the delay time is not limited to the example below.

According to one embodiment, the electronic device 400 may determine the delay time based on the amount of change in motion of the electronic device 400. When the amount of change in motion of the electronic device 400 exceeds a reference value (eg, a second reference value), the electronic device 400 may determine the delay time based on the amount of change in motion of the electronic device 400. The electronic device 400 is configured to operate when the amount of motion change of the electronic device 400 is A (e.g., 50) exceeding the second reference value (e.g., 30) and when the amount of motion change of the electronic device 400 is A (e.g., 50) exceeding the second reference value (e.g., 30). In the case of B (e.g. 90) exceeding 30), the delay time can be calculated differently. For example, when the amount of motion change is relatively large, the electronic device 400 may set the delay time to be longer than when the amount of motion change is relatively small. For example, the electronic device 400 may determine the delay time based on a formula (e.g., Equation 1) including the amount of motion change (e.g., 0 to 100), but there is no limitation on the form of the formula.

(Equation 1)

Delay time = a + b * MC [ms], (MC = motion change amount, a,b=positive real number)

The electronic device 400 may determine the delay time based on the charge level of the battery 405 of the electronic device 400. If the amount of motion change of the electronic device 400 exceeds a reference value (e.g., a second reference value), the electronic device 400 may determine the delay time based on the charge level of the battery 405 of the electronic device 400. there is. “Charge level” may be the ratio of remaining charge to total capacity. Alternatively, the “charge level” may be the remaining charge amount. For example, if the total capacity of the battery 405 is 3000 [mAh] and the remaining charge of the battery 405 is 1500 [mAh], the charge level of the battery 405 is 50 [%] or 1500 [mAh] ] may mean. Hereinafter, the charge level is explained as the ratio of the remaining charge amount to the total capacity, but even when the charge level is the remaining charge amount, it can be understood similarly. When the amount of motion change of the electronic device 400 exceeds a reference value (e.g., a second reference value), the electronic device 400 checks the charge level of the battery 405 and determines the charge level of the battery 405 based on the charge level of the battery 405. You can decide the delay time. The electronic device 400 sets a delay when the charge level of the battery 405 is C (e.g., 40 [%]) and when the charge level of the battery 405 is D (e.g., 80 [%]). Time can be calculated differently. For example, when the charging level is relatively high, the electronic device 400 may set the delay time to be shorter than when the charging level is relatively low. For example, the electronic device 400 may determine the delay time based on a formula (e.g., Equation 2) including the charge level (e.g., 0 to 100 [%]), but there are restrictions on the form of the formula. does not exist.

(Equation 2)

Delay time = c - d * CL [ms], (CL = charge level, c,d=positive real number)

The electronic device 400 may determine the delay time based on the amount of change in motion of the electronic device 400 and the charge level of the battery 405 of the electronic device 400. When the amount of motion change of the electronic device 400 exceeds a reference value (e.g., a second reference value), the electronic device 400 determines the amount of change in motion of the electronic device 400 and the charging of the battery 405 of the electronic device 400. You can determine the delay time based on the level. For example, when the amount of motion change is relatively large, the electronic device 400 sets the delay time to be longer than when the amount of motion change is relatively small, and when the charging level is relatively high, the charging level is set to be relatively small. The delay time can be set shorter than in the low case. For example, the electronic device 400 sets the delay time based on a formula (e.g., Equation 3) including the amount of motion change (e.g., 0 to 100) and the charge level (e.g., 0 to 100 [%]). However, there are no restrictions on the form of the formula.

(Equation 3)

Delay time = f + g * MC - h * CL [ms], (MC = motion change amount, CL = charge level, f,g,h=positive real number)

In operation 711, according to one embodiment, the electronic device 400 (e.g., controller 406) converts the converter 403 in the power conversion circuit 402 for a delay time (e.g., the delay time set in operation 709). You can check the output voltage (Vrect) provided by . Confirmation of the output voltage will be explained in FIG. 8.

At operation 713, according to one embodiment, the electronic device 400 (e.g., controller 406) determines a specified event (e.g., that the output voltage (Vrect) exceeds a reference voltage, or detects a packet from an external source). As the delay time elapses without detection of reception, driving power can be transmitted through the coil 401. The transmission of the designated event and driving power will be explained in FIG. 8.

In operation 715, according to one embodiment, the electronic device 400 (e.g., the controller 406) determines that the amount of motion change of the electronic device 400 (e.g., the amount of motion change identified in operation 705) is equal to a second reference value (e.g. : 707 (second reference value of operation) or less, the output voltage (Vrect) provided from the power conversion circuit 402 to the converter 403 during the basic time can be confirmed. Confirmation of the output voltage will be explained in FIG. 8. As described above, the basic time is from the time when specified conditions (e.g., impedance change amount > first reference value, and motion change amount ≤ second reference value) are satisfied, when the electronic device 400 is first driven through the coil 401. This may be the time until power (e.g. a ping signal) is transmitted.

The default time can be specified in advance. The default time can be specified as 0[s]. The default time can be specified as 550 [ms]. However, there is no limit to the basic time range. As the basic time is specified as a time exceeding 0 [s], the electronic device 400 converts the converter 403 in the power conversion circuit 402 before transmitting driving power (e.g., a ping signal) in operation 717. You can check the output voltage (Vrect) provided by .

The basic time may change depending on the state of the electronic device 400. For example, the electronic device 400 may change the basic time depending on the charge level of the battery 405. For example, the electronic device 400 may change the basic time to a time shorter than the previously set time based on the charge level of the battery 405 exceeding a reference value (eg, a third reference value). For example, the electronic device 400 may change the basic time based on a formula including the charge level of the battery 405, but there is no limitation on the form of the formula. The electronic device 400 may maintain the basic time as the previously set time regardless of the state of the electronic device 400.

At operation 717, according to one embodiment, the electronic device 400 (e.g., controller 406) determines a specified event (e.g., that the output voltage (Vrect) exceeds a reference voltage, or detects a packet from an external source). As the basic time passes without detection of reception, driving power can be transmitted through the coil 401. The transmission of the designated event and driving power will be explained in FIG. 8.

Figure 8 is a flowchart of a method of operating an electronic device, according to one embodiment. FIG. 8 can be explained with reference to FIGS. 4, 5, 6, and 7.

At least some of the operations in FIG. 8 may be omitted. The operation order of the operations in FIG. 8 may be changed. Operations other than the operations of FIG. 8 may be performed before, during, or after the operations of FIG. 8 are performed.

At least some of the operations of FIG. 7 and at least some of the operations of FIG. 8 may be organically connected and applied. Some of the operations in FIG. 7 may not be performed. Some of the operations in FIG. 8 may not be performed. Some of the operations of FIG. 8 may be performed between the operations of FIG. 7 , and some of the operations of FIG. 7 may be performed between the operations of FIG. 8 . Some of the operations in FIG. 8 may correspond to some of the operations in FIG. 7 .

Referring to FIG. 8 , in operation 801, according to one embodiment, the electronic device 400 (e.g., the controller 406) converts the output voltage (Vrect) provided from the power conversion circuit 402 to the converter 403. can confirm. For example, the electronic device 400 may check the output voltage Vrect provided from the power conversion circuit 402 to the converter 403 in operation 711 of FIG. 7 . The electronic device 400 may check the output voltage (Vrect) provided from the power conversion circuit 402 to the converter 403 during the delay time. For example, the electronic device 400 may check the output voltage Vrect provided from the power conversion circuit 402 to the converter 403 in operation 715 of FIG. 7 . The electronic device 400 may check the output voltage Vrect provided from the power conversion circuit 402 to the converter 403 during the basic time.

At operation 803, according to one embodiment, the electronic device 400 (e.g., controller 406) outputs an output voltage provided from power conversion circuit 402 to converter 403 (e.g., the output identified in operation 801). voltage) can be compared with a reference voltage.

At operation 805, according to one embodiment, electronic device 400 (e.g., controller 406) outputs an output voltage provided from power conversion circuit 402 to converter 403 (e.g., the output identified in operation 801). Based on the voltage) exceeding the reference voltage, it can operate in reception mode.

“Receiving mode” may be a mode in which the electronic device 400 operates as a wireless power receiving device. In the reception mode, the electronic device 400 may wirelessly receive power from an external device (eg, the wireless power transmission device 210 or another electronic device 240). The electronic device 400 can check the output voltage provided from the power conversion circuit 402 to the converter 403 in the reception mode. In the reception mode, the electronic device 400 may control the first switch 501 to be turned on in the first direction (eg, the direction output from the converter 403). In the reception mode, the electronic device 400 may charge the battery 405 based on power received from an external device (e.g., the wireless power transmission device 210 or another electronic device 240). In the reception mode, the electronic device 400 receives information about the output voltage provided from the power conversion circuit 402 to the converter 403 by an external device (e.g., a wireless power transmission device 210 or another electronic device ( 240)). In the reception mode, the electronic device 400 sends a signal (or packet) indicating that power is received from an external device (e.g., the wireless power transmission device 210 or another electronic device 240). It can be transmitted to the wireless power transmission device 210 or another electronic device 240). In the reception mode, the electronic device 400 sends information about the amount of power received from an external device (e.g., the wireless power transmission device 210 or another electronic device 240) to the external device (e.g., the wireless power transmitter 240). It may be transmitted to the transmitting device 210 or another electronic device 240. The electronic device 400 may perform operation 701 of FIG. 7 in the reception mode.

In operation 807, according to one embodiment, the electronic device 400 (e.g., controller 406) operates at a specified time (e.g., the basic time of operation 715 of FIG. 7, the delay time of operation 711, or a set time described later). Based on the output voltage provided from the power conversion circuit 402 to the converter 403 (e.g., the output voltage confirmed in operation 801) remaining below the reference voltage during the interval), driving power through the coil 401 can be transmitted. For example, in operation 713 of FIG. 7, the electronic device 400 is in a state in which the output voltage provided from the power conversion circuit 402 to the converter 403 (e.g., the output voltage confirmed in operation 801) is lower than the reference voltage. As the delay time elapses, driving power can be transmitted through the coil 401. For example, the electronic device 400, in operation 717 of FIG. 7, states that the output voltage provided from the power conversion circuit 402 to the converter 403 (e.g., the output voltage confirmed in operation 801) is below the reference voltage. As the basic time elapses, driving power may be transmitted through the coil 401.

In operation 809, according to one embodiment, the electronic device 400 (eg, the controller 406) may check whether a packet is received from the outside as driving power is transmitted. For example, as the electronic device 400 transmits driving power, it can check whether a packet is received from the outside according to an in-band method. For example, as the electronic device 400 transmits driving power, it may check whether a packet is received from the outside according to an out-of-band method. The electronic device 400 sends a packet (e.g., signal strength packet) indicating that power has been received from an external device (e.g., wireless power reception device 220 or another electronic device 240) It may be received from the power receiving device 220 or another electronic device 240.

In operation 811, according to one embodiment, the electronic device 400 (e.g., the controller 406) transmits driving power and, based on receiving a packet from the outside (e.g., the packet in operation 809), transmits It can operate in mode.

“Transmission mode” may be a mode in which the electronic device 400 operates as a wireless power transmission device. In the transmission mode, the electronic device 400 may wirelessly transmit power to an external device (eg, the wireless power transmission device 210 or another electronic device 240). The electronic device 400 may transmit driving power through the coil 401 in transmission mode. The electronic device 400 may control the first switch 501 to be on in the second direction (eg, the input direction to the converter 403) in the transmission mode. In the transmission mode, the electronic device 400, based on the power provided by the battery 405, connects to an external device (e.g., the wireless power receiving device 220 or another electronic device 240) through the coil 401. Power can be transmitted. In the transmission mode, the electronic device 400 may control the second switch 502 to be turned on in the second direction (eg, the direction output from the power source 503). In the transmission mode, the electronic device 400, based on the power provided from the power source 503, connects to an external device (e.g., a wireless power receiving device 220, or another electronic device 240) through the coil 401. ) can transmit power.

In operation 813, according to one embodiment, the electronic device 400 (e.g., the controller 406) selects a specified time (e.g., selection time) in a state in which a packet (e.g., a packet in operation 809) is not confirmed from the outside. ) can be checked to see if it has elapsed. The designated time (eg, selection time) may be a time given for the electronic device 400 to select whether to operate in a reception mode or a transmission mode. The designated time (e.g., selection time) may be the time counted from the time when the change in impedance of at least one point in the electronic device 400 exceeds the reference value (e.g., the first reference value) in operation 703 of FIG. 7. , there are no restrictions on the point of time specified (e.g. selection time).

According to one embodiment, the electronic device 400 (e.g., the controller 406) waits for a specified time (e.g., selection mode duration time) to expire in a state in which a packet (e.g., a packet of an 809 operation) is not confirmed from the outside. As time passes, operation 805 (e.g., operating in receiving mode) may be performed.

According to one embodiment, the electronic device 400 (e.g., the controller 406) waits for a specified time (e.g., selection mode duration time) to expire in a state in which a packet (e.g., a packet of an 809 operation) is not confirmed from the outside. As it does not elapse, operation 801 can be performed. After the electronic device 400 transmits driving power, when performing operation 801 without detecting a designated event (e.g., confirming that the output voltage (Vrect) exceeds the reference voltage, or receiving a packet from the outside), The output voltage provided from the power conversion circuit 402 to the converter 403 can be checked during a set time interval (e.g., 550 [ms]).

In operation 815, according to one embodiment, the electronic device 400 (e.g., the controller 406) may check whether an event related to the interruption of wireless charging has occurred in a transmission mode. “Events related to interruption of wireless charging” may include occurrence of a control error packet (CEP) timeout, a charging completion event, and a drop in the charge level of the battery 405 below a reference value. There is no limit to the types of events associated with the interruption of wireless charging. The electronic device 400 may operate in the reception mode in operation 805 based on identifying an event related to the interruption of wireless charging in the transmission mode. The electronic device 400 may continue to operate in the transmission mode based on not identifying an event related to the interruption of wireless charging in the transmission mode.

Referring to FIG. 8, the electronic device 400 repeats the operation of checking the output voltage provided from the power conversion circuit 402 to the converter 403 and the operation of transmitting driving power through the coil 401. By performing this, it is possible to determine whether to operate in transmission mode or reception mode. For example, the electronic device 400 transmits driving power for a specified period of time through the coil 401, and then converts the power conversion circuit 402 for a set time interval (e.g., 550 [ms]). ), the output voltage provided to the converter 403 can be checked, and this operation can be performed repeatedly.

FIG. 9 is a diagram for explaining the operation of an electronic device, according to an embodiment.

Referring to FIG. 9, the basic time and delay time can be understood.

Figure 9(a) discloses an embodiment in which the first driving power 912 is transmitted according to the passage of basic time (t0 to t1).

Referring to (a) of FIG. 9, the electronic device 400, in operation 715 of FIG. 7, generates an output voltage (Vrect) output from the power conversion circuit 402 to the converter 403 during the basic time (t0 to t1). ) can be confirmed (911). For example, the operation of the electronic device 400 to check the output voltage (Vrect) output from the power conversion circuit 402 to the converter 403 during the basic time (t0 to t1) is performed under specified conditions (e.g., impedance change amount). > first reference value, and motion change amount ≤ second reference value). In operation 717 of FIG. 7, the electronic device 400 performs the basic time (t0 to t1) without detecting a designated event (e.g., confirming that the output voltage (Vrect) exceeds the reference voltage, or receiving a packet from the outside). ) As elapses, the driving power 912 can be transmitted through the coil 401. As the transmission mode or reception mode is not determined, the electronic device 400 may repeat confirmation of the output voltage (913, 915) and transmission of driving power (914, 916) as shown in (a) of FIG. 9. there is. In (a) of FIG. 9, in the operation of the electronic device 400 checking the output voltage (911, 913, 915), the time allocated to 913 and 915 and the time allocated to 911 may be the same or different. You may.

Figure 9(b) discloses an embodiment of transmitting the first driving power (e.g., 922) according to the elapse of a delay time (e.g., t0 to t7) longer than the basic time (e.g., t0 to t1), there is.

Referring to (b) of FIG. 9, the electronic device 400 outputs an output voltage (Vrect) from the power conversion circuit 402 to the converter 403 during the delay time (t0 to t7) in operation 711 of FIG. ) can be confirmed (921). For example, the operation of the electronic device 400 to check the output voltage (Vrect) output from the power conversion circuit 402 to the converter 403 during the delay time (t0 to t7) is performed under specified conditions (e.g., impedance change > It may be performed based on the first reference value and the amount of motion change > the second reference value). In operation 713 of FIG. 7, the electronic device 400 performs delay times (t0 to t7) without detecting a designated event (e.g., confirming that the output voltage (Vrect) exceeds the reference voltage, or receiving a packet from the outside). ) As lapses, driving power can be transmitted through the coil 401. As the transmission mode or reception mode is not determined, the electronic device 400 may repeat checking the output voltage (923) and transmitting the driving power (924) as shown in (b) of FIG. 9. In (b) of FIG. 9 , when the electronic device 400 checks the output voltage (921, 923), the time allocated to 921 and the time allocated to 923 may be the same or different.

In a state where the electronic device 400 (e.g., the electronic device 230 of FIG. 2) and another electronic device (e.g., the other electronic device 240 of FIG. 2) are in close proximity, the electronic device 400 (e.g., the electronic device 230 of FIG. 2) Looking at a case in which the electronic device 230 operates as shown in (a) of FIG. 9 and another electronic device (e.g., the other electronic device 240 in FIG. 2) operates as shown in (b) of FIG. 9, the case is as follows. same.

In FIG. 9 , another electronic device (e.g., other electronic device 240 of FIG. 2) receives driving power 912 transmitted from the electronic device 400 (e.g., electronic device 230 of FIG. 2). Accordingly, the probability of operating in reception mode may be high. For example, another electronic device (e.g., other electronic device 240 of FIG. 2) receives driving power 912 transmitted from the electronic device 400 (e.g., electronic device 230 of FIG. 2). Accordingly, it can operate in reception mode. The electronic device 400 (e.g., the electronic device 230 in FIG. 2) operates in a reception mode, thereby enabling the other electronic device (e.g., the other electronic device 240 in FIG. 2) to As a packet transmitted from another electronic device 240 (e.g., a packet corresponding to the driving power 912 transmitted by the electronic device 400) is received, the probability of operating in the transmission mode may be high. For example, the electronic device 400 (e.g., the electronic device 230 of FIG. 2) causes another electronic device (e.g., the other electronic device 240 of FIG. 2) to operate in a reception mode, thereby Example: The electronic device 240 of FIG. 2 may operate in transmission mode as it receives a transmitted packet. Accordingly, the electronic device 400 (e.g., the electronic device 230 of FIG. 2) may wirelessly transmit power to another electronic device (e.g., the other electronic device 240 of FIG. 2). Another electronic device (e.g., other electronic device 240 of FIG. 2) may wirelessly receive power from the electronic device 400 (e.g., electronic device 230 of FIG. 2).

FIG. 10 is a diagram for explaining the operation of an electronic device, according to an embodiment.

Referring to FIG. 10, the difference in delay time can be understood.

Figure 10 (a) discloses an embodiment in which the first driving power 1012 is transmitted according to the passage of a first delay time (t0 to t3) that is longer than the basic time (eg, t0 to t1).

Referring to (a) of FIG. 10, the electronic device 400 outputs the output voltage from the power conversion circuit 402 to the converter 403 during the first delay time (t0 to t3) in operation 711 of FIG. 7. (Vrect) can be checked (1011). In operation 713 of FIG. 7, the electronic device 400 sets the first delay time (t0) without detecting a designated event (e.g., confirming that the output voltage (Vrect) exceeds the reference voltage, or receiving a packet from the outside). As ~t3) elapses, the driving power 1012 can be transmitted through the coil 401. As the transmission mode or reception mode is not determined, the electronic device 400 performs an operation to check the output voltage (e.g., 1011) and an operation to transmit driving power (e.g., 1012) as shown in (a) of FIG. 10. You can repeat (1013).

Figure 10(b) shows an embodiment of transmitting the first driving power (e.g., 1022) according to the elapse of a second delay time (e.g., t0 to t5) that is longer than the basic time (e.g., t0 to t1). It is starting.

Referring to (b) of FIG. 10, the electronic device 400 outputs the power from the power conversion circuit 402 to the converter 403 during the second delay time (e.g., t0 to t5) in operation 711 of FIG. 7. You can check the output voltage (Vrect) (1021). In operation 713 of FIG. 7, the electronic device 400 detects a second delay time (e.g., confirming that the output voltage (Vrect) exceeds the reference voltage, or receiving a packet from the outside) without detecting a specified event (e.g., confirming that the output voltage (Vrect) exceeds the reference voltage, or receiving a packet from the outside). : As t0 to t5) passes, the driving power 1022 can be transmitted through the coil 401. As the transmission mode or reception mode is not determined, the electronic device 400 performs an operation of checking the output voltage (e.g., 1021) and an operation of transmitting driving power (e.g., 1022) as shown in (b) of FIG. 10. You can repeat (1023).

In a state where the electronic device 400 (e.g., the electronic device 230 of FIG. 2) and another electronic device (e.g., the other electronic device 240 of FIG. 2) are in close proximity, the electronic device 400 (e.g., the electronic device 230 of FIG. 2) Looking at a case in which the electronic device 230 operates as shown in (a) of FIG. 10 and another electronic device (e.g., the other electronic device 240 in FIG. 2) operates as shown in (b) of FIG. 10, the case is as follows. same.

In FIG. 10, another electronic device (e.g., other electronic device 240 of FIG. 2) receives driving power 1012 transmitted from the electronic device 400 (e.g., electronic device 230 of FIG. 2). Accordingly, there is a high probability that it will operate in receiving mode. For example, another electronic device (e.g., other electronic device 240 of FIG. 2) receives driving power 1012 transmitted from the electronic device 400 (e.g., electronic device 230 of FIG. 2). Accordingly, it can operate in reception mode. The electronic device 400 (e.g., the electronic device 230 in FIG. 2) operates in a reception mode, thereby enabling the other electronic device (e.g., the other electronic device 240 in FIG. 2) to As a packet transmitted from another electronic device 240 (e.g., a packet corresponding to the driving power 1012 transmitted by the electronic device 400) is received, the probability of operating in the transmission mode may be high. For example, the electronic device 400 (e.g., the electronic device 230 of FIG. 2) causes another electronic device (e.g., the other electronic device 240 of FIG. 2) to operate in a reception mode, thereby Example: The electronic device 240 of FIG. 2 may operate in transmission mode as it receives a transmitted packet. Accordingly, the electronic device 400 (e.g., the electronic device 230 of FIG. 2) may wirelessly transmit power to another electronic device (e.g., the other electronic device 240 of FIG. 2). Another electronic device (e.g., other electronic device 240 of FIG. 2) may wirelessly receive power from the electronic device 400 (e.g., electronic device 230 of FIG. 2).

Those skilled in the art will understand that the various embodiments described in this specification can be applied organically to each other within the applicable range. For example, those skilled in the art will understand that at least some operations of an embodiment described in this specification may be omitted and applied, or that at least some operations of one embodiment and at least some operations of another embodiment may be organically connected and applied.

According to one embodiment, the electronic device 230; 301; 400 includes a converter 403 configured to perform a DC/DC power conversion operation, electrically or operationally connected to the converter 403, and converting AC/DC power. A power conversion circuit 402 set to perform a conversion operation, a coil 401 electrically or operationally connected to the power conversion circuit 402, and set to detect motion of the electronic device 230; 301; 400. It may include a motion sensor 407 and a controller 406 operatively connected to the converter 403, the power conversion circuit 402, or the motion sensor 407. The controller 406 may be set to check the amount of impedance change at at least one point within the electronic device 230; 301; 400. The controller 406 may be set to check the amount of motion change of the electronic device 230; 301; 400 through the motion sensor 407 based on the amount of impedance change exceeding the first reference value. The controller 406 may be set to set a delay time based on the amount of motion change exceeding a second reference value. The controller 406 may be set to transmit the first driving power to the external electronic device 210; 220; 240; 302 through the coil 401 as the delay time elapses.

According to one embodiment, the controller 406 may be set to determine the delay time according to the amount of motion change.

According to one embodiment, the electronic device 230; 301; 400 may include a battery 405 operatively connected to the controller 406. The controller 406 may be set to check the charge level of the battery 405. The controller 406 may be set to determine the delay time according to the charge level.

According to one embodiment, the controller 406 may be set to check the output voltage provided from the power conversion circuit 402 to the converter 403 during the delay time.

According to one embodiment, the controller 406 may be set to control the electronic device 230; 301; 400 to operate in a reception mode based on the output voltage exceeding a reference voltage.

According to one embodiment, the controller 406 controls the output voltage provided from the power conversion circuit 402 to the converter 403 during a first time interval after transmitting the first driving power. Can be set to check. The controller 406 may be set to control the electronic device 230; 301; 400 to operate in a reception mode based on the output voltage exceeding the reference voltage.

According to one embodiment, the controller 406 controls the coil 401 based on maintaining the output voltage below the reference voltage during the first time interval after transmitting the first driving power. It can be set to transmit the second driving power to the external electronic device 210; 220; 240; 302. The controller 406 may be set to check the output voltage provided from the power conversion circuit 402 to the converter 403 during the first time interval after transmitting the second driving power.

According to one embodiment, the controller 406 transmits driving power based on maintaining the output voltage below the reference voltage during the first time interval after transmitting the second driving power, and It can be set to repeat the operation of checking the output voltage. The controller 406 switches the electronic device 230; 301; 400 to the reception mode based on whether the mode of the electronic device 230; 301; 400 is not determined whether it is a transmission mode or a reception mode for a designated time from the time of transmitting the first driving power. It can be set to control the electronic device (230; 301; 400) to operate.

According to one embodiment, the controller 406 controls the external electronic device 210; 220; 240 through the coil 401 with the passage of basic time, based on the motion change amount being less than or equal to the second reference value. ; 302) may be set to transmit the first driving power.

According to one embodiment, the controller 406 may be set to check the output voltage provided from the power conversion circuit 402 to the converter 403 during the basic time. The controller 406 may be set to control the electronic device 230; 301; 400 to operate in a reception mode based on the output voltage exceeding the reference voltage.

According to one embodiment, the controller 406 is configured to operate in a transmission mode based on checking a packet provided from the external electronic device 220; 240; 302 according to transmission of the first driving power. It can be set to control the electronic device (230; 301; 400).

According to one embodiment, the controller 406 controls the electronic device 230; 301; 400 to operate in the transmission mode and then, based on identifying an event related to the interruption of wireless charging, operates in the reception mode. It can be set to control the electronic device (230; 301; 400) to operate.

According to one embodiment, the electronic device 230; 301; 400 includes a sensing pattern 504 disposed at the center of the coil 401; And it may include a sensing circuit 506 configured to detect a change in impedance of the sensing pattern 504. The controller 406 may be set to check the amount of impedance change of the sensing pattern 504 as the amount of impedance change of the at least one point through the sensing circuit 506.

According to one embodiment, the first stage of the converter 403 may be connected to the power conversion circuit 402. The electronic device 230; 301; 400 may include a switch 501 connected to the second terminal of the converter 403. The controller 406 may be set to control the switch 501 depending on whether the electronic device 230; 301; 400 operates in a transmission mode or a reception mode.

According to one embodiment, a method of operating the electronic device 230; 301; 400 may include checking the amount of change in impedance of at least one point within the electronic device 230; 301; 400. The method detects the amount of motion change of the electronic device (230; 301; 400) through the motion sensor 407 of the electronic device (230; 301; 400) based on the impedance change exceeding the first reference value. May include confirmation actions. The method may include setting a delay time based on the amount of motion change exceeding a second reference value. The method includes transmitting first driving power to an external electronic device (210; 220; 240; 302) through the coil 401 of the electronic device (230; 301; 400) as the delay time elapses. may include.

According to one embodiment, setting the delay time may include determining the delay time according to the amount of motion change.

According to one embodiment, setting the delay time may include checking the charge level of the battery 405 of the electronic device 230; 301; 400. Setting the delay time may include determining the delay time according to the charge level.

According to one embodiment, the method provides power from the power conversion circuit 402 of the electronic device 230; 301; 400 to the converter 403 of the electronic device 230; 301; 400 during the delay time. It may include an operation to check the output voltage. The method may include operating in a reception mode based on the output voltage exceeding a reference voltage.

According to one embodiment, the method includes, during a first interval after transmitting the first driving power, the power conversion circuit 402 of the electronic device 230; 301; 400 It may include an operation of checking the output voltage provided to the converter 403 of (230; 301; 400). The method may include operating in a reception mode based on the output voltage exceeding a reference voltage.

According to one embodiment, the method is based on maintaining the output voltage below the reference voltage during the first time interval after transmitting the first driving power, through the coil 401. It may include transmitting the second driving power to the electronic device (210; 220; 240; 302). The method may include checking the output voltage provided from the power conversion circuit 402 to the converter 403 during the first time interval after transmitting the second driving power.

According to one embodiment, the method includes transmitting driving power and adjusting the output voltage based on maintaining the output voltage below the reference voltage during the first time interval after transmitting the second driving power. It may include the operation of repeating the operation of checking. The method allows the electronic device (230; 301; 400) to operate in a reception mode based on whether the mode of the electronic device (230; 301; 400) is a transmission mode or a reception mode for a specified period of time from the time of transmitting the first driving power. It may include an operation to control the electronic device (230; 301; 400).

According to one embodiment, the method is based on the fact that the motion change amount is less than or equal to the second reference value, and the external electronic device 210; 220; 240; 302 through the coil 401 with the passage of basic time. It may include an operation of transmitting the first driving power.

According to one embodiment, the method may include checking the output voltage provided from the power conversion circuit 402 to the converter 403 during the basic time. The method may include controlling the electronic device 230; 301; 400 to operate in a reception mode based on the output voltage exceeding a reference voltage.

According to one embodiment, the method includes, according to transmission of the first driving power, the electronic device to operate in a transmission mode based on checking a packet provided from the external electronic device 220; 240; 302. It may include an operation to control (230; 301; 400).

According to one embodiment, the method controls the electronic device 230; 301; 400 to operate in the transmission mode and then operates in the reception mode based on identifying an event related to the interruption of wireless charging. It may include controlling the electronic device (230; 301; 400).

According to one embodiment, the method includes detecting the change in impedance of the sensing pattern 504 of the electronic device 230; 301; 400 through the sensing circuit 506 of the electronic device 230; 301; 400. It may include an operation of checking the impedance change at one point.

According to one embodiment, the first stage of the converter 403 may be connected to the power conversion circuit 402. The electronic device 230; 301; 400 may include a switch 501 connected to the second terminal of the converter 403. The method may include controlling the switch 501 depending on whether the electronic device 230; 301; 400 is operating in a transmission mode or a reception mode.

According to one embodiment, in a computer readable recording medium storing instructions set to perform at least one operation by a controller 406 of an electronic device 230; 301; 400, the computer readable recording medium includes: At least one operation may include checking the amount of change in impedance of at least one point within the electronic device (230; 301; 400). The at least one operation may be performed on the electronic device 230; 301; 400 through the motion sensor 407 of the electronic device 230; 301; 400, based on the impedance change exceeding the first reference value. It may include an operation to check the amount of motion change. The at least one operation may include setting a delay time based on the amount of motion change exceeding a second reference value. The at least one operation is to transmit first driving power to the external electronic device 210; 220; 240; 302 through the coil 401 of the electronic device 230; 301; 400 as the delay time elapses. It may include a transmitting operation.

According to one embodiment, setting the delay time may include determining the delay time according to the amount of motion change.

According to one embodiment, setting the delay time may include checking the charge level of the battery 405 of the electronic device 230; 301; 400. Setting the delay time may include determining the delay time according to the charge level.

According to one embodiment, the at least one operation is performed during the delay time by converting the power conversion circuit 402 of the electronic device 230; 301; 400 to the converter 403 of the electronic device 230; 301; 400. ) may include an operation of checking the output voltage provided. The at least one operation may include operating in a reception mode based on the output voltage exceeding a reference voltage.

According to one embodiment, the at least one operation is performed in the power conversion circuit 402 of the electronic device 230; 301; 400 during a first interval after transmitting the first driving power. It may include checking the output voltage provided to the converter 403 of the electronic device 230; 301; 400. The at least one operation may include operating in a reception mode based on the output voltage exceeding a reference voltage.

According to one embodiment, the at least one operation is based on maintaining the output voltage below the reference voltage during the first time interval after transmitting the first driving power, the coil 401 It may include transmitting the second driving power to the external electronic device 210; 220; 240; 302. The at least one operation may include checking the output voltage provided from the power conversion circuit 402 to the converter 403 during the first time interval after transmitting the second driving power. there is.

According to one embodiment, the at least one operation includes transmitting driving power based on maintaining the output voltage below the reference voltage during the first time interval after transmitting the second driving power; It may include repeating the operation of checking the output voltage. The at least one operation is based on whether the mode of the electronic device 230; 301; 400 is not determined whether it is a transmission mode or a reception mode for a specified time from the time of transmitting the first driving power, and switching to a reception mode. It may include controlling the electronic device 230; 301; 400 to operate.

According to one embodiment, the at least one operation is performed by the external electronic device 210; 220; 240 through the coil 401 with the passage of basic time, based on the motion change amount being less than or equal to the second reference value. ; 302) may include transmitting the first driving power.

According to one embodiment, the at least one operation may include checking the output voltage provided from the power conversion circuit 402 to the converter 403 during the basic time. The at least one operation may include controlling the electronic device 230; 301; 400 to operate in a reception mode based on the output voltage exceeding the reference voltage.

According to one embodiment, the at least one operation is to operate in a transmission mode based on checking a packet provided from the external electronic device 220; 240; 302 according to transmission of the first driving power. It may include controlling the electronic device (230; 301; 400).

According to one embodiment, the at least one operation is based on checking an event related to the interruption of wireless charging after controlling the electronic device 230; 301; 400 to operate in the transmission mode, and operating in the reception mode. It may include controlling the electronic device (230; 301; 400) to operate.

According to one embodiment, the at least one operation includes changing the impedance of the sensing pattern 504 of the electronic device 230; 301; 400 through the sensing circuit 506 of the electronic device 230; 301; 400. It may include an operation of confirming the change in impedance of the at least one point.

According to one embodiment, the first stage of the converter 403 may be connected to the power conversion circuit 402. The electronic device 230; 301; 400 may include a switch 501 connected to the second terminal of the converter 403. The at least one operation may include controlling the switch 501 depending on whether the electronic device 230; 301; 400 is operating in a transmission mode or a reception mode.

Electronic devices according to various embodiments disclosed in this document may be of various types. Electronic devices may include, for example, portable communication devices (e.g., smartphones), computer devices, portable multimedia devices, portable medical devices, cameras, wearable devices, or home appliances. Electronic devices according to embodiments of this document are not limited to the above-described devices.

The various embodiments of this document and the terms used herein are not intended to limit the technical features described in this document to specific embodiments, and should be understood to include various changes, equivalents, or replacements of the embodiments. In connection with the description of the drawings, similar reference numbers may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of the above items, unless the relevant context clearly indicates otherwise. As used herein, “A or B”, “at least one of A and B”, “at least one of A or B”, “A, B or C”, “at least one of A, B and C”, and “A Each of phrases such as “at least one of , B, or C” may include any one of the items listed together in the corresponding phrase, or any possible combination thereof. Terms such as "first", "second", or "first" or "second" may be used simply to distinguish one component from another, and to refer to that component in other respects (e.g., importance or order) is not limited. One (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.” When mentioned, it means that any of the components can be connected to the other components directly (e.g. wired), wirelessly, or through a third component.

The term “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 logic, logic block, component, or circuit, for example. It can be used as A module may be an integrated part or a minimum unit of the parts or a part thereof that performs one or more functions. For example, according to one embodiment, the module may be implemented in the form of an application-specific integrated circuit (ASIC).

Various embodiments of this document are software that includes one or more instructions stored in a storage medium (e.g., internal memory or external memory) that can be read by a machine (e.g., wireless power transmission device 100). It can be implemented as (e.g. a program). For example, a processor (e.g., processor 201) of a device (e.g., wireless power transmission device 100) may call at least one command among one or more commands stored from a storage medium and execute it. This allows the device to be operated to perform at least one function according to the at least one instruction called. The one or more instructions may include code generated by a compiler or code that can be executed by an interpreter. A storage medium that can be read by a device may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' only means that the storage medium is a tangible device and does not contain signals (e.g. electromagnetic waves), and this term refers to cases where data is semi-permanently stored in the storage medium. There is no distinction between temporary storage cases.

According to one embodiment, methods according to various embodiments disclosed in this document may be provided and included in a computer program product. Computer program products are commodities and can be traded between sellers and buyers. The computer program product may be distributed in the form of a machine-readable storage medium (e.g. compact disc read only memory (CD-ROM)) or through an application store (e.g. Play StoreTM) or on two user devices (e.g. It can be distributed (e.g. downloaded or uploaded) directly between smart phones) or online. In the case of online distribution, at least a portion of the computer program product may be at least temporarily stored or temporarily created in a machine-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or a relay server.

According to various embodiments, each component (e.g., module or program) of the above-described components may include a single or plural entity, and some of the plurality of entities may be separately placed in other components. there is. According to various embodiments, one or more of the components or operations described above may be omitted, or one or more other components or operations may be added. Alternatively or additionally, multiple components (eg, modules or programs) may be integrated into a single component. In this case, the integrated component may perform one or more functions of each component of the plurality of components in the same or similar manner as those performed by the corresponding component of the plurality of components prior to the integration. . According to various embodiments, operations performed by a module, program, or other component may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, or omitted. Alternatively, one or more other operations may be added.

Claims (20)

In the electronic device (230; 301; 400)
A converter 403 configured to perform DC/DC power conversion operations;
a power conversion circuit 402 electrically or operationally connected to the converter 403 and configured to perform an AC/DC power conversion operation;
A coil 401 electrically or operationally connected to the power conversion circuit 402;
A motion sensor 407 configured to detect motion of the electronic device 230; 301; 400; and
comprising a controller (406) operatively connected to the converter (403), the power conversion circuit (402) or the motion sensor (407),
The controller 406,
Checking the amount of change in impedance of at least one point in the electronic device (230; 301; 400),
Based on the impedance change exceeding the first reference value, the motion change amount of the electronic device (230; 301; 400) is confirmed through the motion sensor 407,
Setting a delay time based on the amount of motion change exceeding a second reference value,
Set to transmit first driving power to an external electronic device (210; 220; 240; 302) through the coil (401) as the delay time elapses.
Electronic devices (230; 301; 400).
According to claim 1,
The controller 406,
Set to determine the delay time according to the amount of motion change,
Electronic devices (230; 301; 400).
The method of claim 1 or 2,
Further comprising a battery (405) operatively connected to the controller (406),
The controller 406,
Check the charge level of the battery 405,
Set to determine the delay time according to the charge level,
Electronic devices (230; 301; 400).
According to any one of claims 1 to 3,
The controller 406,
During the delay time, set to check the output voltage provided from the power conversion circuit 402 to the converter 403,
Electronic devices (230; 301; 400).
According to any one of claims 1 to 4,
The controller 406,
Set to control the electronic device (230; 301; 400) to operate in a reception mode based on the output voltage exceeding a reference voltage,
Electronic devices (230; 301; 400).
According to any one of claims 1 to 5,
The controller 406,
Checking the output voltage provided from the power conversion circuit 402 to the converter 403 during a first time interval after transmitting the first driving power,
Set to control the electronic device (230; 301; 400) to operate in a reception mode based on the output voltage exceeding a reference voltage,
Electronic devices (230; 301; 400).
According to any one of claims 1 to 6,
The controller 406,
Based on the output voltage remaining below the reference voltage during the first time interval after transmitting the first driving power, the external electronic device 210; 220; 240; 302 is transmitted through the coil 401. ) and transmitting the second driving power to
configured to check the output voltage provided from the power conversion circuit (402) to the converter (403) during the first time interval after transmitting the second driving power,
Electronic devices (230; 301; 400).
According to any one of claims 1 to 7,
The controller 406,
Repeating the operation of transmitting driving power and checking the output voltage based on the output voltage remaining below the reference voltage during the first time interval after transmitting the second driving power,
For a designated time from the time of transmitting the first driving power, the electronic device 230 (301; 400) is configured to operate in a reception mode based on whether the mode of the electronic device (230; 301; 400) is a transmission mode or a reception mode. ; 301; 400),
Electronic devices (230; 301; 400).
According to any one of claims 1 to 8,
The controller 406,
Based on the motion change amount being less than or equal to the second reference value, the first driving power is set to be transmitted to the external electronic device 210; 220; 240; 302 through the coil 401 with the passage of basic time. felled,
Electronic devices (230; 301; 400).
According to any one of claims 1 to 9,
The controller 406,
During the basic time, check the output voltage provided from the power conversion circuit 402 to the converter 403,
Set to control the electronic device (230; 301; 400) to operate in a reception mode based on the output voltage exceeding a reference voltage,
Electronic devices (230; 301; 400).
The method of any one of claims 1 to 10,
The controller 406,
According to the transmission of the first driving power, control the electronic device (230; 301; 400) to operate in a transmission mode based on confirming a packet provided from the external electronic device (220; 240; 302) set,
Electronic devices (230; 301; 400).
The method according to any one of claims 1 to 11,
The controller 406,
After controlling the electronic device 230; 301; 400 to operate in the transmission mode, the electronic device 230; 301; 400 to operate in the reception mode based on confirming an event related to the interruption of wireless charging. which is set to control,
Electronic devices (230; 301; 400).
The method of any one of claims 1 to 12,
A sensing pattern 504 disposed at the center of the coil 401; and
It further includes a sensing circuit 506 configured to detect a change in impedance of the sensing pattern 504,
The controller 406,
Set to check the amount of impedance change of the sensing pattern 504 through the sensing circuit 506 as the amount of impedance change of the at least one point,
Electronic devices (230; 301; 400).
The method of any one of claims 1 to 13,
The first stage of the converter 403 is connected to the power conversion circuit 402,
The electronic device 230; 301; 400 further includes a switch 501 connected to a second terminal of the converter 403,
The controller 406,
Set to control the switch 501 depending on whether the electronic device (230; 301; 400) operates in a transmission mode or a reception mode,
Electronic devices (230; 301; 400).
In a method of operating an electronic device (230; 301; 400),
An operation of checking the amount of change in impedance of at least one point within the electronic device (230; 301; 400);
An operation of checking the amount of motion change of the electronic device (230; 301; 400) through the motion sensor 407 of the electronic device (230; 301; 400) based on the amount of impedance change exceeding a first reference value; ,
An operation of setting a delay time based on the amount of motion change exceeding a second reference value;
An operation of transmitting first driving power to an external electronic device (210; 220; 240; 302) through the coil 401 of the electronic device (230; 301; 400) as the delay time elapses.
method.
According to claim 15,
The operation of setting the delay time is,
Including the operation of determining the delay time according to the amount of motion change,
method.
The method of claim 15 or 16,
The operation of setting the delay time is,
An operation of checking the charge level of the battery 405 of the electronic device 230; 301; 400;
Including the operation of determining the delay time according to the charge level,
method.
The method according to any one of claims 15 to 17,
During the delay time, checking the output voltage provided from the power conversion circuit 402 of the electronic device 230; 301; 400 to the converter 403 of the electronic device 230; 301; 400;
Further comprising operating in a reception mode based on the output voltage exceeding a reference voltage,
method.
The method according to any one of claims 15 to 18,
During a first interval after transmitting the first driving power, a converter ( An operation to check the output voltage provided by 403),
Further comprising operating in a reception mode based on the output voltage exceeding a reference voltage,
method.
The method according to any one of claims 15 to 19,
Further comprising operating in a transmission mode based on checking a packet provided from the external electronic device (220; 240; 302) according to the transmission of the first driving power,
method.

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