Electronic device for wireless power transmission and operating method thereof

Abstract

An electronic device according to various embodiments includes a sensor; a first magnetic element capable of being rotated to have a first polarity or a second polarity in a first direction; and a processor. When the first magnetic element is aligned in the first direction by a magnetic force generated by the proximity of a second magnetic element included in an external electronic device, the processor is configured to identify the strength of the magnetic force and the polarity of the first magnetic element corresponding to the magnetic force through the sensor, select any one of a plurality of power transmission methods based on the strength of the magnetic force and the polarity, and wirelessly transmit power to the external electronic device based on the power transmission method.

Description

Technical Field

[0001] Various embodiments relate to electronic devices and methods for wirelessly transmitting power. Background Art

[0002] With the development of wireless power transmission technology, many electronic devices have recently been used for wireless charging or contactless charging using wireless power transmission technology. Wireless power transmission technology is a technology that converts electrical energy into a form of electromagnetic waves having a frequency and wirelessly transmits the converted energy to a load (e.g., an external electronic device) without a transmission line. Wireless power transmission technology can be a technology that wirelessly transmits power from a power transmitting device to a power receiving device without requiring the power receiving device and the power transmitting device to be connected via a separate connector, thereby charging the battery of the power receiving device. Wireless power transmission technology may include a magnetic induction scheme and a magnetic resonance scheme, and there may be various other types of wireless power transmission technology.

[0003] Magnetic induction wireless power transmission systems use a scheme that transfers power using a magnetic field induced in a coil. This scheme is a technology that uses the magnetic field generated by current flowing through the transmitting coil to generate an electromotive force in the receiving coil, causing an induced current to flow through the receiving coil, thereby supplying energy to a load (e.g., an external electronic device). Representative standards for magnetic induction schemes include the Wireless Power Consortium (WPC) and the Power Materials Alliance (PMA), and specify frequency bands (such as 110kHz to 205kHz for WPC, 227kHz to 357kHz for PMA, and 118kHz to 153kHz for PMA) that can be used as frequencies for power transmission. Summary of the Invention

[0004] [Technical Issues]

[0005] Depending on the manufacturer, electronic devices capable of wireless power transmission (e.g., wearable electronic devices) may use different communication protocols and signal frequencies for wireless power transmission. For a single power transmission device capable of supporting multiple power transmission schemes, the difficulty and complexity of designing the power transmission device may increase in order to identify a power transmission scheme suitable for the power receiving device. Alternatively, for a single power transmission device capable of supporting multiple power transmission schemes, the time required to start charging may increase due to the different communication methods and configuration schemes of the multiple power transmission schemes.

[0006] In electronic devices capable of wireless power transmission (e.g., wearable electronic devices), magnets with different polarities can be inserted into the power transmission device and the power receiving device, respectively, and the power transmission device and the power receiving device can be fixedly positioned using the magnets to achieve efficient power transmission and minimize the phenomenon of induction heating. When a single power transmission device supports multiple power transmission schemes, inserting magnets with the same polarity into the power transmission device and the power receiving device makes it impossible to install the power receiving device for wireless power transmission.

[0007] Various embodiments provide a power transmission device and an operating method thereof, wherein the power transmission device includes a rotatable magnet. When a power receiving device is mounted on the power transmission device using the magnet, the power receiving device can identify the polarity of the magnet included in the power transmission device and determine a power transmission scheme suitable for the wireless power receiving device from among multiple power transmission schemes.

[0008] [Technical solution]

[0009] According to various embodiments, an electronic device includes a sensor, a first magnetic element, and a processor. The first magnetic element can be rotated to have a polarity of one of a first pole and a second pole in a first direction. The processor is configured to: identify, through the sensor, the polarity of one of the first magnetic element and the second magnetic element, and the strength of the magnetic force generated by the second magnetic element approaching the first magnetic element, the polarity being determined by the magnetic force, and the second magnetic element being included in an external electronic device; determine a power transmission scheme from a plurality of power transmission schemes based on the polarity and the strength of the magnetic force; and wirelessly transmit power to the external electronic device based on the power transmission scheme.

[0010] According to various embodiments, an operating method for an electronic device includes a first magnetic element that can be rotated to have a polarity of one of a first pole and a second pole in a first direction. The operating method includes: identifying the polarity of one of the first and second magnetic elements, and the strength of a magnetic force generated by the second magnetic element approaching the first magnetic element, the polarity being determined by the magnetic force, and the second magnetic element being included in an external electronic device; determining a power transmission scheme from among a plurality of power transmission schemes based on the polarity and the strength of the magnetic force; and wirelessly transmitting power to the external electronic device based on the power transmission scheme.

[0011] According to various embodiments, a computer-readable recording medium stores instructions that are configured to cause a processor, when executed, to: identify a polarity of one of a first magnetic element and a second magnetic element, and a strength of a magnetic force generated by the second magnetic element approaching the first magnetic element, the polarity being determined by the magnetic force, the first magnetic element being included in an electronic device and rotatable to have a polarity of one of a first pole and a second pole in a first direction, the second magnetic element being included in an external electronic device; determine a power transmission scheme from a plurality of power transmission schemes based on the polarity and the strength of the magnetic force; and wirelessly transmit power to the external electronic device based on the power transmission scheme.

[0012] [Beneficial Effects]

[0013] According to various embodiments, the power transmission device includes a rotatable magnet, and when the power receiving device is mounted on the power transmission device using the magnet, the power transmission device is able to detect changes in magnetic flux by using a sensor and determine a power transmission scheme suitable for the wireless power receiving device among multiple power transmission schemes.

[0014] The power transmission device according to various embodiments can support a plurality of power transmission schemes and effectively determine a power transmission scheme suitable for a power receiving device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a block diagram of an electronic device in a network environment according to various embodiments.

[0016] Figure 2 is a block diagram of a power management module and a battery according to various embodiments.

[0017] Figure 3 is a diagram illustrating a wireless charging system according to various embodiments.

[0018] Figure 4 is a diagram illustrating a wireless charging system according to various embodiments.

[0019] Figure 5 is a flowchart illustrating the operation of a power transmission apparatus according to various embodiments.

[0020] Figure 6 is a block diagram of a power transmission apparatus according to various embodiments.

[0021] 7A and 7B are diagrams illustrating a wireless charging system according to various embodiments.

[0022] Figure 8 2 is a diagram illustrating an operation of determining a power transmission scheme by a power transmission apparatus through a sensor according to various embodiments.

[0023] Figure 9 is a flowchart illustrating the operation of a power transmission apparatus according to various embodiments.

[0024] Figure 10 is a diagram illustrating an operation of outputting a ping signal by a power transmission device according to various embodiments.

[0025] Figure 11 is a flowchart illustrating the operation of a power transmission apparatus according to various embodiments.

[0026] Figure 12 is a diagram illustrating an operation of outputting a ping signal by a power transmission device according to various embodiments. DETAILED DESCRIPTION

[0027] Figure 1 1 is a block diagram illustrating an electronic device 101 in a network environment 100 according to various embodiments. Figure 1 , the electronic device 101 in the network environment 100 can communicate with the electronic device 102 via the first network 198 (e.g., a short-range wireless communication network), or can communicate with at least one of the electronic device 104 or the server 108 via the second network 199 (e.g., a long-range wireless communication network). According to an embodiment, the electronic device 101 can communicate with the electronic device 104 via the server 108. According to an embodiment, the electronic device 101 may include a processor 120, a memory 130, an input module 150, a sound output module 155, a display module 160, an audio module 170, a sensor module 176, an interface 177, a connection terminal 178, a haptic module 179, a camera module 180, a power management module 188, a battery 189, a communication module 190, a subscriber identification module (SIM) 196, or an antenna module 197. In some embodiments, at least one of the above components (e.g., the connection terminal 178) may be omitted from the electronic device 101, or one or more other components may be added to the electronic device 101. In some embodiments, some of the above-described components (eg, sensor module 176, camera module 180, or antenna module 197) may be implemented as a single integrated component (eg, display module 160).

[0028] The processor 120 may run, for example, software (e.g., program 140) to control at least one other component of the electronic device 101 connected to the processor 120 (e.g., a hardware component or a software component), and may perform various data processing or calculations. According to an embodiment, as at least part of the data processing or calculation, the processor 120 may store a command or data received from another component (e.g., the sensor module 176 or the communication module 190) in the volatile memory 132, process the command or data stored in the volatile memory 132, and store the resultant data in the non-volatile memory 134. According to an embodiment, the processor 120 may include a main processor 121 (e.g., a central processing unit (CPU) or an application processor (AP)) or an auxiliary processor 123 (e.g., a graphics processing unit (GPU), a neural processing unit (NPU), an image signal processor (ISP), a sensor hub processor, or a communication processor (CP)) that is operationally independent of or combined with the main processor 121. For example, when the electronic device 101 includes a main processor 121 and an auxiliary processor 123, the auxiliary processor 123 may be adapted to consume less power than the main processor 121 or be adapted to be dedicated to a specific function. The auxiliary processor 123 may be implemented separately from the main processor 121 or as part of the main processor 121.

[0029] When the main processor 121 is inactive (e.g., sleeping), the auxiliary processor 123 (rather than the main processor 121) may control at least some of the functions or states associated with at least one of the components of the electronic device 101 (e.g., the display module 160, the sensor module 176, or the communication module 190). Alternatively, when the main processor 121 is active (e.g., running an application), the auxiliary processor 123 may work together with the main processor 121 to control at least some of the functions or states associated with at least one of the components of the electronic device 101 (e.g., the display module 160, the sensor module 176, or the communication module 190). Depending on the embodiment, the auxiliary processor 123 (e.g., an image signal processor or a communication processor) may be implemented as part of another component functionally related to the auxiliary processor 123 (e.g., the camera module 180 or the communication module 190). Depending on the embodiment, the auxiliary processor 123 (e.g., a neural processing unit) may include a hardware structure dedicated to artificial intelligence model processing. The artificial intelligence model may be generated through machine learning. For example, such learning may be performed by the electronic device 101 where the artificial intelligence is executed or via a separate server (e.g., server 108). The learning algorithm may include, but is not limited to, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning. The artificial intelligence model may include multiple artificial neural network layers. The artificial neural network may be a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted Boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), or a deep Q network or a combination of two or more thereof, but is not limited thereto. Additionally or alternatively, the artificial intelligence model may include a software structure in addition to a hardware structure.

[0030] The memory 130 may store various data used by at least one component of the electronic device 101 (e.g., the processor 120 or the sensor module 176). The various data may include, for example, software (e.g., the program 140) and input data or output data for commands related thereto. The memory 130 may include a volatile memory 132 or a non-volatile memory 134.

[0031] The program 140 may be stored as software in the memory 130 , and may include, for example, an operating system (OS) 142 , middleware 144 , or applications 146 .

[0032] The input module 150 may receive commands or data from outside the electronic device 101 (e.g., a user) to be used by other components of the electronic device 101 (e.g., the processor 120). The input module 150 may include, for example, a microphone, a mouse, a keyboard, keys (e.g., buttons), or a digital pen (e.g., a stylus).

[0033] The sound output module 155 can output sound signals to the outside of the electronic device 101. The sound output module 155 may include, for example, a speaker or a receiver. The speaker can be used for general purposes such as playing multimedia or playing records. The receiver can be used to receive incoming calls. Depending on the embodiment, the receiver can be implemented separately from the speaker or as part of the speaker.

[0034] The display module 160 can visually provide information to the outside of the electronic device 101 (e.g., a user). The display device 160 may include, for example, a display, a holographic device, or a projector, and a control circuit for controlling a corresponding one of the display, the holographic device, and the projector. Depending on the embodiment, the display module 160 may include a touch sensor adapted to detect a touch or a pressure sensor adapted to measure the strength of the force caused by the touch.

[0035] The audio module 170 can convert sound into an electrical signal, and vice versa. According to an embodiment, the audio module 170 can obtain sound via the input module 150, or output sound via the sound output module 155 or an earphone of an external electronic device (e.g., electronic device 102) directly (e.g., wired) or wirelessly connected to the electronic device 101.

[0036] The sensor module 176 can detect an operating state (e.g., power or temperature) of the electronic device 101 or an environmental state (e.g., a user's state) outside the electronic device 101, and then generate an electrical signal or data value corresponding to the detected state. Depending on the embodiment, the sensor module 176 may include, for example, a gesture sensor, a gyro sensor, an atmospheric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an infrared (IR) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illumination sensor.

[0037] The interface 177 may support one or more specific protocols to be used to connect the electronic device 101 directly (e.g., wired) or wirelessly to an external electronic device (e.g., the electronic device 102). Depending on the embodiment, the interface 177 may include, for example, a High-Definition Multimedia Interface (HDMI), a Universal Serial Bus (USB) interface, a Secure Digital (SD) card interface, or an audio interface.

[0038] The connection end 178 may include a connector, wherein the electronic device 101 can be physically connected to an external electronic device (e.g., the electronic device 102) via the connector. Depending on the embodiment, the connection end 178 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

[0039] The haptic module 179 may convert the electrical signal into mechanical stimulation (eg, vibration or motion) or electrical stimulation that can be recognized by the user via his sense of touch or kinesthetic sense. According to an embodiment, the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulator.

[0040] The camera module 180 may capture still images or moving images. Depending on the embodiment, the camera module 180 may include one or more lenses, image sensors, image signal processors, or flashes.

[0041] The power management module 188 may manage power supply to the electronic device 101. According to an embodiment, the power management module 188 may be implemented as, for example, at least a part of a power management integrated circuit (PMIC).

[0042] The battery 189 may power at least one component of the electronic device 101. According to an embodiment, the battery 189 may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

[0043] The communication module 190 may support establishing a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device 101 and an external electronic device (e.g., electronic device 102, electronic device 104, or server 108), and perform communication via the established communication channel. The communication module 190 may include one or more communication processors capable of operating independently from the processor 120 (e.g., an application processor (AP)) and supporting direct (e.g., wired) communication or wireless communication. Depending on the embodiment, the communication module 190 may include a wireless communication module 192 (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 194 (e.g., a local area network (LAN) communication module or a power line communication (PLC) module). A corresponding one of these communication modules can communicate with an external electronic device via a first network 198 (e.g., a short-range communication network such as Bluetooth, Wireless Fidelity (Wi-Fi) Direct, or Infrared Data Association (IrDA)) or a second network 199 (e.g., a long-range communication network such as a traditional cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a LAN or a wide area network (WAN))). These various types of communication modules can be implemented as a single component (e.g., a single chip), or these various types of communication modules can be implemented as multiple components separated from each other (e.g., multiple chips). The wireless communication module 192 can identify and authenticate the electronic device 101 in a communication network (such as the first network 198 or the second network 199) using user information (e.g., an International Mobile Subscriber Identity (IMSI)) stored in the user identification module 196.

[0044] The wireless communication module 192 can support 5G networks after 4G networks and next-generation communication technologies (e.g., new radio (NR) access technology). NR access technology can support enhanced mobile broadband (eMBB), massive machine type communication (mMTC), or ultra-reliable low-latency communication (URLLC). The wireless communication module 192 can support high-frequency bands (e.g., millimeter wave bands) to achieve, for example, high data transmission rates. The wireless communication module 192 can support various technologies for ensuring performance on high-frequency bands, such as, for example, beamforming, massive multiple-input multiple-output (massive MIMO), full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, or massive antennas. The wireless communication module 192 can support various requirements specified in the electronic device 101, an external electronic device (e.g., electronic device 104), or a network system (e.g., a second network 199). According to an embodiment, the wireless communication module 192 may support peak data rates for implementing eMBB (e.g., 20 Gbps or greater), loss coverage for implementing mMTC (e.g., 164 dB or less), or U-plane latency for implementing URLLC (e.g., 0.5 ms or less for each of the downlink (DL) and uplink (UL), or 1 ms or less round trip).

[0045] Antenna module 197 can transmit or receive signals or power to or from an external portion of electronic device 101 (e.g., an external electronic device). Depending on the embodiment, antenna module 197 may include an antenna comprising a radiating element formed of a conductive material or conductive pattern formed in or on a substrate (e.g., a printed circuit board (PCB)). Depending on the embodiment, antenna module 197 may include multiple antennas (e.g., an array antenna). In this case, at least one antenna suitable for a communication scheme used in a communication network (e.g., first network 198 or second network 199) may be selected from the multiple antennas by, for example, communication module 190 (e.g., wireless communication module 192). Signals or power can then be transmitted or received between communication module 190 and the external electronic device via the selected at least one antenna. Depending on the embodiment, additional components other than the radiating element (e.g., a radio frequency integrated circuit (RFIC)) may also be formed as part of antenna module 197.

[0046] According to various embodiments, antenna module 197 may form a millimeter wave antenna module. According to embodiments, the millimeter wave antenna module may include a printed circuit board, a radio frequency integrated circuit (RFIC), and multiple antennas (e.g., array antennas), wherein the RFIC is disposed on a first surface (e.g., bottom surface) of the printed circuit board, or adjacent to the first surface and capable of supporting a specified high frequency band (e.g., millimeter wave band), and the multiple antennas are disposed on a second surface (e.g., top surface or side surface) of the printed circuit board, or adjacent to the second surface and capable of transmitting or receiving signals in the specified high frequency band.

[0047] At least some of the above components can be connected to each other via an inter-peripheral communication scheme (e.g., a bus, general-purpose input output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)) and communicatively transmit signals (e.g., commands or data) therebetween.

[0048] According to an embodiment, commands or data may be transmitted or received between the electronic device 101 and the external electronic device 104 via the server 108 connected to the second network 199. Each of the electronic device 102 or the electronic device 104 may be a device of the same type as the electronic device 101, or a device of a different type than the electronic device 101. According to an embodiment, all or some operations to be executed on the electronic device 101 may be executed on one or more of the external electronic device 102, the external electronic device 104, or the server 108. For example, if the electronic device 101 should automatically execute a function or service or should execute a function or service in response to a request from a user or another device, the electronic device 101 may request the one or more external electronic devices to execute at least part of the function or service instead of executing the function or service, or the electronic device 101 may request the one or more external electronic devices to execute at least part of the function or service in addition to executing the function or service. The one or more external electronic devices that receive the request may execute at least part of the function or service requested, or execute another function or service related to the request, and transmit the result of the execution to the electronic device 101. The electronic device 101 may provide the result as at least a partial reply to the request, with or without further processing the result. To this end, cloud computing technology, distributed computing technology, mobile edge computing (MEC) technology, or client-server computing technology, for example, may be used. The electronic device 101 may use, for example, distributed computing or mobile edge computing to provide ultra-low latency services. In another embodiment, the external electronic device 104 may include an Internet of Things (IoT) device. The server 108 may be an intelligent server using machine learning and / or neural networks. According to an embodiment, the external electronic device 104 or the server 108 may be included in the second network 199. The electronic device 101 may be applied to intelligent services (e.g., smart homes, smart cities, smart cars, or healthcare) based on 5G communication technology or IoT-related technologies.

[0049] Figure 2 is a block diagram 200 illustrating the power management module 188 and the battery 189 according to various embodiments.

[0050] Reference Figure 2The power management module 188 may include a charging circuit 210, a power conditioner 220, or a power meter 230. The charging circuit 210 may charge the battery 189 using power supplied from an external power source outside the electronic device 101. Depending on an embodiment, the charging circuit 210 may select a charging scheme (e.g., normal charging or fast charging) based at least in part on the type of external power source (e.g., a power outlet, USB, or wireless charging), the amount of power that can be provided from the external power source (e.g., approximately 20 watts or more), or the properties of the battery 189, and may charge the battery 189 using the selected charging scheme. The external power source may be directly connected to the electronic device 101 via the connection terminal 178, for example, or wirelessly connected to the electronic device 101 via the antenna module 197.

[0051] The power regulator 220 can generate a variety of power having different voltage levels or different current levels by regulating the voltage level or current level of the power supplied from the external power source or the battery 189. The power regulator 220 can regulate the voltage level or current level of the power supplied from the external power source or the battery 189 to different voltage levels or current levels suitable for each of the components included in the electronic device 101. According to an embodiment, the power regulator 220 can be implemented in the form of a low dropout (LDO) regulator or a switching regulator. The power meter 230 can measure usage status information about the battery 189 (for example, the capacity of the battery 189, the number of times it has been charged or discharged, the voltage, or the temperature).

[0052] The power management module 188 can use, for example, the charging circuit 210, the power conditioner 220, or the power meter 230 to determine charging status information related to the charging of the battery 189 (e.g., life, overvoltage, low voltage, overcurrent, overcharge, overdischarge, overheating, short circuit, or expansion) based at least in part on the measured usage status information about the battery 189. The power management module 188 can determine whether the status of the battery 189 is normal or abnormal based at least in part on the determined charging status information. If the status of the battery 189 is determined to be abnormal, the power management module 188 can adjust the charging of the battery 189 (e.g., reduce the charging current or voltage, or stop charging). According to an embodiment, at least some of the functions of the power management module 188 can be performed by an external control device (e.g., the processor 120).

[0053] According to an embodiment, the battery 189 may include a protection circuit module (PCM) 240. The PCM 240 may perform one or more of various functions (e.g., a pre-shutdown function) for preventing performance deterioration or damage to the battery 189. Additionally or alternatively, the PCM 240 may be configured as at least a portion of a battery management system (BMS), wherein the BMS is capable of performing various functions including cell balancing, battery capacity measurement, charge or discharge count, temperature measurement, or voltage measurement.

[0054] According to an embodiment, at least a portion of the usage status information or charging status information of the battery 189 may be measured using a corresponding sensor (e.g., a temperature sensor) in the sensor module 176, the power meter 230, or the power management module 188. According to an embodiment, the corresponding sensor (e.g., a temperature sensor) in the sensor module 176 may be included as part of the battery protection circuit module 240, or may be arranged near the battery 189 as a separate device.

[0055] According to an embodiment, the power management module 188 may also include a power transmission circuit (eg, Figure 3 The power transmission circuit 311 may include a power adapter configured to receive power (or electricity) input from the battery 189 and appropriately convert the input power voltage, a power generation circuit configured to generate power, and / or a circuit configured to wirelessly transmit the generated power to an external electronic device (e.g., Figure 1 The power transmission circuit 311 can transmit the generated power to the external electronic device by maximizing the efficiency between the transmission coil and the reception coil in the external electronic device through the matching circuit.

[0056] The electronic device according to various embodiments may be one of various types of electronic devices. The electronic device may include, for example, a portable communication device (e.g., a smartphone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a household appliance. According to an embodiment of the present disclosure, the electronic device is not limited to those described above.

[0057] The electronic device according to various embodiments may be a portion of a plate-type / stick-type electronic device, a rollable electronic device, or a foldable electronic device. According to an embodiment of the present disclosure, the electronic device is not limited to those described above.

[0058] It should be understood that the various embodiments of the present disclosure and the terms used therein are not intended to limit the technical features set forth herein to specific embodiments, but rather include various changes, equivalents or alternative forms for corresponding embodiments. For the description of the accompanying drawings, similar reference numerals may be used to refer to similar or related elements. It will be understood that the nouns in the singular form corresponding to the term may include one or more things, unless the relevant context clearly indicates otherwise. As used herein, each phrase in phrases such as "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 "at least one of A, B or C" may include any one or all possible combinations of the items listed together with the corresponding phrase in the multiple phrases. As used herein, terms such as "1st" and "2nd" or "first" and "second" may be used to simply distinguish corresponding components from another component, and do not limit the components in other aspects (e.g., importance or order). It will be understood that if an element (e.g., a first element) is referred to as being “combined with another element (e.g., a second element)”, “combined to another element (e.g., a second element)”, “connected with another element (e.g., a second element)”, or “connected to another element (e.g., a second element)”, when the term “operably” or “communicatively” is used or when the term “operably” or “communicatively” is not used, it means that the element can be directly (e.g., wired) connected to the other element, wirelessly connected to the other element, or connected to the other element via a third element.

[0059] As used in connection with various embodiments of the present disclosure, the term "module" may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with other terms (e.g., "logic," "logic block," "portion," or "circuit"). A module may be a single integrated component adapted to perform one or more functions, or the smallest unit or portion of the single integrated component. For example, depending on the embodiment, a module may be implemented in the form of an application-specific integrated circuit (ASIC).

[0060] The various embodiments described herein can be implemented as software (e.g., program 140) comprising one or more instructions stored in a storage medium (e.g., internal memory 136 or external memory 138) that can be read by a machine (e.g., electronic device 101). For example, under the control of a processor, a processor (e.g., processor 120) of the machine (e.g., electronic device 101) can call at least one of the one or more instructions stored in the storage medium and execute the at least one instruction with or without the use of one or more other components. This enables the machine to be operable to perform at least one function according to the called at least one instruction. The one or more instructions may include code generated by a compiler or code that can be executed by an interpreter. The machine-readable storage medium can be provided in the form of a non-transitory storage medium. The term "non-transitory" only means that the storage medium is a tangible device and does not include signals (e.g., electromagnetic waves), but the term does not distinguish between data being semi-permanently stored in the storage medium and data being temporarily stored in the storage medium.

[0061] According to an embodiment, the method according to various embodiments of the present disclosure may be included and provided in a computer program product. The computer program product may be traded as a product between a seller and a buyer. The computer program product may be released in the form of a machine-readable storage medium (e.g., a compact disc read-only memory (CD-ROM)), or may be downloaded via an application store (e.g., the Play Store). TM ) The computer program product may be published online (e.g., downloaded or uploaded) or may be distributed (e.g., downloaded or uploaded) directly between two user devices (e.g., smartphones). If published online, at least part of the computer program product may be temporarily generated or at least part of the computer program product may be at least temporarily stored in a machine-readable storage medium (such as a memory of a manufacturer's server, an application store's server, or a forwarding server).

[0062] According to various embodiments, each component (for example, module or program) in the above-mentioned components may include a single entity or multiple entities, and some entities in the multiple entities may be separably arranged in different components. According to various embodiments, one or more components in the above-mentioned components may be omitted, or one or more other components may be added. Alternatively or additionally, multiple components (for example, module or program) may be integrated into a single component. In this case, according to various embodiments, the integrated component may still perform the one or more functions of each component in the multiple components in the same or similar manner as a corresponding component in the multiple components before integration. According to various embodiments, the operations performed by a module, program or another component may be performed sequentially, in parallel, repeatedly or in a heuristic manner, or one or more operations in the operations may be run or omitted in different orders, or one or more other operations may be added.

[0063] Figure 3 is a diagram illustrating a wireless charging system according to various embodiments.

[0064] Reference Figure 3 , according to various embodiments, the electronic device 301 (eg, Figure 1 102) (hereinafter also referred to as "power transmission device") is configured to wirelessly transmit power to an external electronic device 302 (eg, Figure 1 101) (hereinafter also referred to as "power receiving device") is powered, and the external electronic device 302 is configured to wirelessly receive power.

[0065] According to various embodiments, the power transmission device 301 may correspond to a wireless power receiver or a power receiving device. For example, when the power transmission device 301 corresponds to a wireless power receiver or a power receiving device, the power transmission device 301 may be applied to the elements required for power reception by the power receiving device 302.

[0066] According to various embodiments, the power transmission device 301 may include a power transmission circuit 311 , a control circuit 312 , a communication circuit 313 and / or a sensing circuit 314 .

[0067] According to various embodiments, the power transmission circuit 311 may include: a power adapter 311a, which is configured to receive an input of a power source (or power source) from the outside and appropriately convert the voltage of the input power source; a power generation circuit 311b, which is configured to generate power; and / or a matching circuit 311c, which is configured to maximize the efficiency between the transmission coil 311L and the reception coil 321L.

[0068] According to various embodiments, the power transmission circuit 311 may include at least a portion of multiple power adapters 311a, power generation circuits 311b, transmission coils 311L, or matching circuits 311c, enabling power transmission to multiple power receiving devices (e.g., a first external electronic device and a second external electronic device). The power generation circuit 311b may convert the power received from the power adapter 311a into, for example, an AC waveform and / or amplify the AC waveform, and transmit the waveform to the transmission coil 311L. The frequency of the AC waveform may be configured to be approximately 100 kHz to 205 kHz or approximately 6.78 MHz according to a standard, but is not limited thereto. The power generation circuit 311b may include an inverter. For example, the inverter may be a full-bridge inverter or a half-bridge inverter, but the inverter type is not limited to these inverter types. When power is applied to the transmission coil 311L, an induced magnetic field whose size varies with time is generated by the transmission coil 311L, thereby enabling wireless power transmission. Although not shown, the power transmission circuit 311 may further include at least one capacitor configuring a resonant circuit along with the transmission coil 311L. The matching circuit 311c may change at least one of the capacitance or reactance of the circuit connected to the transmission coil 311L under the control of the control circuit 312 to control the impedance matching between the power transmission circuit 311 and the power receiving circuit 321. In the receiving coil 321L of the power receiving circuit 321, an induced electromotive force may be generated by a magnetic field formed in the surrounding environment and having a size that varies with time, thereby enabling the power receiving circuit 321 to wirelessly receive power.

[0069] According to various embodiments, the power transmission circuit 311 may support multiple power transmission schemes using the power generation circuit 311b. For example, the power transmission circuit 311 may transmit power using a power transmission scheme suitable for use with an external electronic device among multiple power transmission schemes. For example, the multiple power transmission schemes may include a scheme for wirelessly transmitting power using a magnetic induction scheme and / or a resonant induction scheme.

[0070] According to various embodiments, the power transmission circuit 311 may use the power generation circuit 311b to generate a signal of a first frequency band for providing a first power to a first external electronic device (e.g., the power receiving device 302), and a signal of a second frequency band for providing a second power to a second external electronic device (not shown). For example, the control circuit 312 may output a first signal (hereinafter also referred to as a "check signal") for identifying the proximity of an external object in a check phase (e.g., a standby power state) via the transmission coil 311L during each specified period for wireless power transmission, output a signal associated with authentication in an authentication state (identification & configuration phase), and output a second signal (power signal) for power transmission in a power transmission state (power transmission phase). In other words, the control circuit 312 may output the first signal and the second signal of the first frequency band or the second frequency band according to each power transmission scheme. For example, the first frequency band and the second frequency band may be different from each other.

[0071] According to various embodiments, the control circuit 312 may perform overall control of the power transmission device 301 and generate various messages required for wireless power transmission to transmit the messages to the communication circuit 313. For example, the control circuit 312 may be implemented as Figure 1 The processor 120 of FIG. 1 is the same as or similar to the processor 120 of FIG. In an embodiment, the control circuit 312 may calculate the power (or amount of power) to be transmitted to the power receiving device 302 based on the information received from the communication circuit 313. In an embodiment, the control circuit 312 may control the power transmission circuit 311 so that the power transmitted by the transmission coil 311L is transmitted to the power receiving device 302.

[0072] According to various embodiments, when power is transmitted to one of a plurality of power receiving devices (e.g., a first external electronic device and a second external electronic device), each having a different power transmission scheme, the control circuit 312 may control the power generating circuit 311b so as to generate a first signal and a second signal in a frequency band corresponding to each power transmission scheme.

[0073] According to various embodiments, the communication circuit 313 may include at least one of a first communication circuit 313a and a second communication circuit 313b. The first communication circuit 313a may communicate with the first communication circuit 323a of the power receiving device 302 by using, for example, a frequency that is the same as or adjacent to the frequency used for power transmission in the transmission coil 311L (for example, an in-band scheme). In an embodiment, the second communication circuit 323a may communicate with the second communication circuit 323b of the power receiving device 302 by using, for example, a frequency that is different from the frequency used for power transmission in the transmission coil 311L (for example, an out-of-band scheme). For example, the second communication circuit 313b may obtain information related to the charging state (for example, V) from the second communication circuit 323b using one of various short-range communication schemes such as Bluetooth, BLE, Wi-Fi, and NFC. rec Information, I out According to an embodiment, the first communication circuit 313 a may be included in the power transmission circuit 311 , and the first communication circuit 313 a may communicate with the first communication circuit 323 a of the power receiving device 302 .

[0074] According to various embodiments, the sensing circuit 314 may include at least one sensor, and may detect at least one state of the power transmission device 301 by using the at least one sensor.

[0075] According to various embodiments, the sensing circuit 314 may include at least one of a Hall sensor, a magnetic sensor, a temperature sensor, a motion sensor, or a current (or voltage) sensor, and may identify the power transmission scheme of the power receiving circuit 321 through the Hall sensor (or magnetic sensor), detect the temperature state of the power transmission device 301 by using a temperature sensor, detect the motion state of the power transmission device 301 by using a motion sensor, and detect the state of the output signal of the power transmission device 301, such as current amplitude, voltage amplitude, or power amplitude, by using a current (or voltage) sensor.

[0076] Depending on the embodiment, a current (or voltage) sensor may measure a signal in the power transmission circuit 311. The signal may be measured in at least a portion of the transmission coil 311L, the matching circuit 311c, or the power generation circuit 311b. For example, the current (or voltage) sensor may include a circuit configured to measure a signal at the front end of the transmission coil 311L.

[0077] According to various embodiments, the sensing circuit 314 may be a circuit for foreign object detection (FOD). The power transmission device 301 may measure the current and voltage of the power transmission circuit 311 via the sensing circuit 314 and obtain the magnitude of the power transmitted by the power transmission device 301 based on the measured current and voltage. When an external object is present between the power transmission device 301 and the power receiving device 302, the magnitude of the lost power, representing the difference between the power transmitted by the power transmission device 301 and the power received by the power receiving device 302, may increase. When the lost power exceeds a specified threshold, the power transmission device 301 may stop power transmission. The power transmission device 301 may receive information related to the power received from the power receiving device 302 via the communication circuit 313.

[0078] According to an embodiment, the sensing circuit 314 may measure current and voltage applied to the power transmission circuit 311 (eg, the power generation circuit 311 b or the transmission coil 311L) by changes in the power receiving device 302 in order to detect changes in the power receiving device 302 .

[0079] According to various embodiments, the power receiving device 302 (eg, Figure 1 The power receiving device 302 may include a power receiving circuit 321 (e.g., the power management module 188), a control circuit 322 (e.g., the processor 120), a communication circuit 323 (e.g., the communication module 190), at least one sensor 324 (e.g., the sensor module 176), or a display 325 (e.g., the display device 160). Regarding the power receiving device 302, the description of the configuration corresponding to the power transmitting device 301 may be partially omitted.

[0080] According to various embodiments, the power receiving device 302 may correspond to a wireless power transmitter or a power transmitting device. When the power receiving device 302 corresponds to a wireless power transmitter or a power transmitting device, the power receiving device 302 may include elements required for the power transmitting device 301 to perform power transmission.

[0081] According to various embodiments, the power receiving circuit 321 may include a receiving coil 321L configured to wirelessly receive power from the power transmission device 301, a matching circuit 321a, a rectifier circuit 321b configured to rectify the received AC power into DC, a regulating circuit 321c configured to regulate the charging voltage, a switching circuit 321d, and / or a battery 321e (e.g., battery 189).

[0082] According to various embodiments, the control circuit 322 may perform overall control of the power receiving device 302 and generate various messages required for wireless power reception to transmit the messages to the communication circuit 323 .

[0083] According to various embodiments, the communication circuit 323 may include at least one of a first communication circuit 323a and a second communication circuit 323b. The first communication circuit 323a may communicate with the power transmission device 301 via the receiving coil 321L. The second communication circuit 323b may communicate with the power transmission device 301 using one of various short-range communication schemes such as Bluetooth, BLE, Wi-Fi, and NFC. According to an embodiment, the first communication circuit 323a may be included in the power receiving circuit 321, and the first communication circuit 323a may communicate with the first communication circuit 313a of the power receiving device 301.

[0084] According to various embodiments, the display 325 may display various display information required for wireless power transmission / reception.

[0085] According to various embodiments, the at least one sensor 324 may include at least a portion of a current / voltage sensor, a temperature sensor, an illumination sensor, or a sound sensor.

[0086] According to various embodiments, the at least one sensor 324 may detect the power transmission device 301 by detecting a discovery signal or power received from the power transmission device 301. The at least one sensor 324 may detect a signal change at the input / output terminal of the rectifier circuit 321b, the matching circuit 321a, or the receiving coil 321L, which is generated by a signal output from the power transmission device 301. According to various embodiments, the at least one sensor 324 may be included in the power receiving circuit 321.

[0087] Figure 4 is a diagram illustrating a wireless charging system according to various embodiments.

[0088] Reference Figure 4 In case (a), the power transmission device 403 may include a first magnetic element 430 having a first polarity (or a first pole). The power transmission device 403 may be arranged to be aligned with the power receiving device 404 so as to wirelessly transmit power to the power receiving device 404. For example, when wirelessly transmitting power, the power transmission device 403 may be positioned using the first magnetic element 430 to maximize efficiency and / or minimize the phenomenon of induction heating. That is, the first magnetic element 430 may be used so that the power transmission device 403 and the power receiving device 404 are fixed in place. For example, the wireless charging coil 412 included in the power transmission device 403 may be arranged in a ring shape without having a central portion thereof (such as a donut), and the first magnetic element 430 may be located in the central portion where the wireless charging coil 412 is not present. The first magnetic element 430 may include a shielding member 435 around it so as not to affect the magnetic force of the wireless charging coil 412.

[0089] According to various embodiments, the power receiving device 404 may include a second magnetic element 480 having a second polarity (or second pole). For example, the wireless charging coil 422 included in the power transmitting device 404 may be provided in a ring shape without a central portion (e.g., a circulator), and the second magnetic element 480 may be located in the central portion where the wireless charging coil 422 is not present. The second magnetic element 480 may include a shielding member 485 around it so as not to affect the magnetic force of the wireless charging coil 422. For example, each of the power transmitting device 403 and the power receiving device 404 may include magnetic elements 430 and 480 having different polarities. For example, when the first polarity corresponds to "N pole," the second polarity may correspond to "S pole," and when the first polarity corresponds to "S pole," the second polarity may correspond to "N pole."

[0090] However, if Figure 4 As shown in case (a), when the first magnetic element 430 has a first polarity, the power transmission device 403 can be aligned at a position where the power transmission efficiency is highest due to the attractive force between the magnetic elements 430 and 480 and the power receiving device 404 including a magnetic element having a second polarity opposite to the first polarity. According to another embodiment, the power transmission device 403 may be misaligned with the power receiving device 404 due to the repulsive force between the magnetic elements 430 and 480 and the power receiving device 404 including a magnetic element having the same polarity as the first polarity.

[0091] Reference Figure 4 In case (b), the power transmission device 401 (e.g., Figure 1 electronic device 101 or Figure 3 The power transmission device 301 may include a first magnetic element 440 that is rotatable to have a first polarity or a second polarity in a first direction. For example, the wireless charging coil 411 included in the power transmission device 401 may be provided in a ring shape without a central portion (e.g., a circulator), and the rotatable first magnetic element 440 may be located in the central portion where the wireless charging coil 411 is not present. The rotatable first magnetic element 440 may include a shielding member 445 around it so as not to affect the magnetic force of the wireless charging coil 411. In this case, the shielding member 445 may include a hole so that the first magnetic element 440 can transmit the magnetic force to the Hall sensor 450 adjacent to the first magnetic element 440. According to an embodiment, at least a portion of the shielding member 445 may be located in the second direction of the first magnetic element 440 and / or the wireless charging coil 411. The shielding member 445 may prevent at least a portion of the magnetic force generated by the coil and / or magnet from being affected in the second direction.

[0092] According to an embodiment, the Hall sensor 450 may be located between the first magnetic element 440 and the shielding member 445 .

[0093] According to an embodiment, the Hall sensor 450 may be located in the second direction of the shielding member 445. The shielding member 445 may be located between the first magnetic element 440 and the Hall sensor 450. The shielding member 445 may include a hole so that the first magnetic element 440 can transmit the magnetic force to the Hall sensor 450 adjacent to the first magnetic element 440.

[0094] According to various embodiments, the shielding member 445 may be implemented in a form surrounding the first magnetic element 440. Figure 4 In case (b), the shielding member 445 is shown as extending to the area between the wireless charging coil 411 and the Hall sensor 450, so that the Hall sensor 450 is not affected by the wireless charging coil 411. However, the technical concept of the present disclosure is not limited thereto. For example, the shielding member 445 may be implemented in a form that only surrounds the first magnetic element 440.

[0095] For example, the power transmission device 401 can be positioned parallel to the power receiving device 402 using the first magnetic element 440 for alignment. For example, the first direction may refer to the direction facing the power receiving device 402 when the power transmission device 401 wirelessly transmits power. That is, the first magnetic element 440 can be rotated so as to have a polarity different from that of the second magnetic element 490 of the power receiving device 402 in the first direction. For example, the wireless charging coil 421 included in the power receiving device 402 may be provided in a ring shape without a central portion (e.g., a circulator), and the second magnetic element 490 may be located in the central portion where the wireless charging coil 421 is not present. The second magnetic element 490 may include a shielding member 495 around it so as not to affect the magnetic force of the wireless charging coil 421. Depending on the embodiment, the shielding member 495 may be located in the first direction of the wireless charging coil 421 and / or the second magnetic element 490.

[0096] According to various embodiments, when the power receiving device 402 is in contact with the power transmitting device 401, the power transmitting device 401 may be arranged so that the polarity of the first magnetic element 440 of the power transmitting device 401 is aligned with the polarity of the second magnetic element 490 of the power receiving device 402. When the second magnetic element 490 has a first polarity, the first magnetic element 440 may be rotated in a first direction to have a second polarity opposite to the first polarity. Alternatively, when the second magnetic element 490 has a second polarity, the first magnetic element 440 may be rotated in the first direction to have the first polarity opposite to the second polarity.

[0097] Therefore, even when the power receiving device 402 includes a magnetic element having any polarity, the power transmitting device 401 can be aligned with the power receiving device 402, thereby wirelessly transmitting power. However, if the power transmission schemes of the power transmitting device 401 and the power receiving device 402 differ, power transmission between the two devices may not be possible, or even if the power transmitting device 401 transmits power to the power receiving device 402, the power transmission efficiency may be reduced.

[0098] According to various embodiments, the power receiving device 402 may include magnetic elements with different polarities for each manufacturer. Furthermore, the power receiving device 402 may use different power transmission schemes (e.g., signal frequencies and / or wireless power transmission communication protocols used for power transmission) for each manufacturer. In this case, the power transmitting device 401 may identify the power transmission scheme of the power receiving device 402 based on the polarity of the magnetic element 490 included in the power receiving device 402. In this regard, the method by which the power transmitting device 401 identifies the power transmission scheme of the power receiving device 402 will be described in detail below.

[0099] The operation of the power transmission device 401 described below may be performed by a processor ( Figure 1 processor 120) or control circuitry (e.g., Figure 3 However, for ease of description, it will be assumed that the subject of the operation is the power transmission device 401.

[0100] Figure 5 is a flowchart illustrating the operation of a power transmission apparatus according to various embodiments.

[0101] Reference Figure 5 According to various embodiments, in operation 501, due to an external electronic device (e.g., Figure 3 When the power receiving device 402 (e.g., an external electronic device) approaches the power transmitting device 401, the power transmitting device 401 identifies the polarity of the first magnetic element 440 and / or the second magnetic element 490. For example, the first polarity of the first magnetic element 440 can be aligned in a first direction by a magnetic force generated when the second magnetic element 490 included in the external electronic device 402 approaches the first magnetic element 440. When the first polarity of the first magnetic element 440 is aligned in the first direction, the power transmitting device 401 can identify the change in magnetic force and identify the polarity of the first magnetic element 440 in response to the change in magnetic force. For example, the first polarity of the first magnetic element 440 in the first direction may be opposite to the polarity of the second magnetic element 490. On the other hand, the second polarity of the first magnetic element 440 in a second direction opposite to the first direction may be the same as the polarity of the second magnetic element 490.

[0102] According to various embodiments, when the first polarity of the first magnetic element 440 is aligned in the first direction, the power transmission device 401 can use a sensor (e.g., a Hall sensor or a magnetic sensor) to identify the second polarity of the first magnetic element 440 in the second direction. The power transmission device 401 can identify the polarity of the second magnetic element 490 based on the second polarity of the first magnetic element 440 in the second direction. For example, the sensor (e.g., a Hall sensor or a magnetic sensor) can be located in the second direction of the first magnetic element 440, but is not limited thereto.

[0103] According to various embodiments, when the external electronic device 402 approaches the power transmission device 401, the power transmission device 401 may detect a change in magnetic flux using a sensor (e.g., a Hall sensor or a magnetic sensor) and identify the polarity of the second magnetic element 490 included in the external electronic device 402 based on the state (or change) of the detected magnetic flux. For example, the power transmission device 401 may identify the polarity of the first magnetic element 440 and / or the second magnetic element 490 based on the direction of the magnetic flux. For example, the power transmission device 401 may identify the magnetic strength based on the magnetic flux density (or the number of magnetic lines of force).

[0104] According to various embodiments, in operation 503, the power transmission device 401 identifies the strength of the magnetic force. For example, the power transmission device 401 may detect magnetic flux using a sensor (e.g., a Hall sensor or a magnetic sensor). The power transmission device 401 may identify the strength of the magnetic force based on the magnetic flux detected by the sensor. For example, the power transmission device 401 may compare the strength of the magnetic force with a threshold value. For example, the power transmission device 401 may compare the strength of the magnetic force with a threshold value to identify whether the first magnetic element 440 has completely rotated to the "N pole" or the "S pole." The power transmission device 401 may identify whether the rotatable first magnetic element 440 has failed by comparing the strength of the magnetic force with the threshold value.

[0105] According to an embodiment, the sensor of power transmission device 401 can recognize that power receiving device 402 is near power transmission device 401 based on the detected magnetic strength. For example, when the distance between power receiving device 402 and power transmission device 401 is greater than a predetermined distance, the sensor can detect a first magnetic strength. Then, when power receiving device 402 is near power transmission device 401, the sensor can detect a second magnetic strength. For example, the second magnetic strength can be greater than the first magnetic strength. Based on the magnetic strength, power transmission device 401 can detect that power receiving device 402 is near power transmission device 401.

[0106] According to various embodiments, in operation 505, the power transmission device 401 determines a power transmission scheme from among multiple power transmission schemes based on the polarity of the magnetic element and the strength of the magnetic force. For example, each of the multiple power transmission schemes may have a different frequency band for the signal used for power transmission. Additionally, each of the multiple power transmission schemes may have a different resonant frequency for the signal used for power transmission.

[0107] According to various embodiments, the configuration of operation 503 may be omitted. For example, the power transmission device 401 may determine one power transmission scheme from among a plurality of power transmission schemes based on the polarity of the magnetic element without measuring the magnetic strength.

[0108] According to various embodiments, in operation 507, the power transmission device 401 wirelessly transmits power to the external electronic device 402 based on the determined power transmission scheme. For example, the power transmission device 401 may output a check signal and a signal for power transmission based on a frequency band and a resonant frequency corresponding to the determined power transmission scheme.

[0109] Figure 6 is a block diagram of a power transmission apparatus according to various embodiments.

[0110] Reference Figure 6 , the power transmission device 601 may include a processor 620, a memory 625, an inverter 630, a first magnetic element 640, a Hall sensor 650, a switch 660, a first capacitor 671, a second capacitor 672, and a coil 680. For example, the power transmission device 601 may be implemented as Figure 1 electronic device 101 or Figure 3 The power transmission device 301 is the same or similar.

[0111] According to various embodiments, the first magnetic element 640 can be rotated to have a polarity of "N pole" or "S pole" in a first direction. For example, the first magnetic element 640 can have a "N pole" on one surface and a "S pole" on the other surface. For example, the first direction can be a direction toward the power receiving device 602.

[0112] According to various embodiments, the power receiving device 602 may include a second magnetic element 690. The second magnetic element 690 may have a polarity of "N pole" or "S pole." For example, the second magnetic element 690 may have a polarity of "N pole" or "S pole." In addition, the second magnetic element 690 may be provided and fixed at a specific position of the power receiving device 602.

[0113] Depending on the embodiment, the expression having one polarity may mean a magnet that performs only the function corresponding to the monopole in the embodiments disclosed herein. A monopole magnet may be implemented in the following forms. For example, a magnet including an "N pole" and an "S pole" functions as a multi-pole magnet when placed along the surface of the housing (when placed parallel to the surface), but when the magnet including an "N pole" and an "S pole" is placed perpendicular to the surface of the housing, only the pole adjacent to the surface can be used to generate a magnetic force (e.g., an attractive force) associated with the power transmission device 601. In this case, for ease of description / distinction, a magnet having a polarity arranged perpendicular to the housing may be referred to as a monopole magnet.

[0114] For another example, a magnet having one polarity may be implemented as a magnet that physically includes two poles but substantially has one polarity that is completely dominant. For example, a magnet complex such as a Halbach array may be used as a monopole magnet.

[0115] For another example, a magnet having one polarity may be implemented by manufacturing the magnet with an appropriate shape / arrangement (eg, pot type and ring type) in consideration of the case where only unipolar magnetism is required.

[0116] Although it is shown herein that the second magnetic element 690 may have one polarity of "N pole" and "S pole", this is merely exemplary, and the number of polarities is not limited thereto. For example, each of the first magnetic element 640 and the second magnetic element 690 may include an "N pole" and an "S pole". In this case, the "N pole" and "S pole" of the first magnetic element 640 and the second magnetic element 690 may be arranged to intersect with each other. For another example, a plurality of first magnetic elements 640 and a plurality of second magnetic elements 690 may be provided.

[0117] According to various embodiments, the processor 620 may control the overall operation of the power transmission device 601. For example, the processor 620 may be implemented as Figure 1 Processor 120 or Figure 3 The control circuit 312 is the same or similar.

[0118] According to various embodiments, when the first magnetic element 640 is aligned in a first direction due to a magnetic force generated when the power receiving device 602 approaches the power transmitting device 601 (or when the power transmitting device 601 approaches the power receiving device 602), the processor 620 can identify the polarity of the first magnetic element 640 corresponding to the magnetic force through the Hall sensor 650. For example, the processor 620 can identify the polarity of the first magnetic element 640 in a second direction. For example, the second direction can be a direction opposite to the first direction.

[0119] According to various embodiments, the processor 620 may identify the magnetic strength through the Hall sensor 650. The processor 620 may identify the magnetic flux state or change through the Hall sensor 650. For example, the processor 620 may compare a threshold stored in the memory 625 with the magnetic strength.

[0120] According to various embodiments, the processor 620 may determine a power transmission scheme from among a plurality of power transmission schemes based on polarity and the strength of the magnetic force. For example, each of the plurality of power transmission schemes may be a wireless power transmission scheme supported by the power transmission device 601. In each of the plurality of power transmission schemes, the ping signal, the data transmission scheme (e.g., a packet format for a charging configuration), and the power transmission signal have a frequency band and a resonant frequency.

[0121] According to various embodiments, processor 620 may output a signal to switch 660 for controlling switch 660 to determine a frequency corresponding to the power transmission scheme. Processor 620 may control switch 660 to determine the resonant frequency of the power transmission signal and the ping signal. For example, when switch 660 is short-circuited, the resonant frequency may be determined based on the capacitance C1+C2 of first capacitor 671 and second capacitor 672. On the other hand, when switch 660 is open, the resonant frequency may be determined based on the capacitance C2 of second capacitor 672.

[0122] According to various embodiments, although Figure 6 6 shows that the switch 660 is used to determine the capacitance as C2 or C1+C2, but the technical concept of the present disclosure is not limited to this. For example, the switch 660 can be used as a branch point to connect the path including the first capacitor or the second capacitor 672 to the TX inverter 630. In this case, the capacitance can be determined by the switch 660 as C1 or C2. In addition, the resonant frequency can be determined based on the capacitance C1 or C2.

[0123] According to various embodiments, the processor 620 may wirelessly transmit power to the power receiving device 602 based on the determined power transmission scheme. For example, the processor 620 may output a verification signal and a power transmission signal based on the determined power transmission scheme. For example, when the polarity of the first magnetic element 640 in the second direction corresponds to a first pole (e.g., a north pole), the processor 620 may transmit power based on a first power transmission scheme from among multiple power transmission schemes. Alternatively, when the polarity of the first magnetic element 640 in the second direction corresponds to a second pole (e.g., a south pole), the processor 620 may transmit power based on a second power transmission scheme from among multiple power transmission schemes. For example, the first power transmission scheme may be different from the second power transmission scheme. For example, the resonant frequency of the first power transmission scheme may be determined based on the capacitance C1+C2, and the resonant frequency of the second power transmission scheme may be determined based on the capacitance C2. For example, the resonant frequency of the second power transmission scheme may be greater than the resonant frequency of the first power transmission scheme. For example, the frequency band of the first power transmission scheme may be 100 kHz to 140 kHz, and the frequency band of the second power transmission scheme may be 250 kHz to 320 kHz.

[0124] 7A and 7B are diagrams illustrating a wireless charging system according to various embodiments.

[0125] 7A , the power transmission device 601 may determine a power transmission scheme according to the polarity of the second magnetic element of the power receiving device 602 .

[0126] According to various embodiments, as shown in case (a) of FIG. 7A , when the polarity of the second magnetic element 791 is "S-pole," the power transmission device 601 may transmit power based on a first power transmission scheme among multiple power transmission schemes. For example, the resonant frequency of the first power transmission scheme may be determined based on the capacitances C1+C2 of the first and second capacitors 771 and 772 and the inductance L of the coil 780. The power transmission device 601 may use a first communication protocol corresponding to the first power transmission scheme. Alternatively, as shown in case (b) of FIG. 7A , when the polarity of the second magnetic element 793 is "N-pole," the power transmission device 601 may transmit power based on a second power transmission scheme among multiple power transmission schemes. For example, the resonant frequency of the second power transmission scheme may be determined based on the capacitance C2 of the second capacitor 772 and the inductance L of the coil 780. The power transmission device 601 may use a second communication protocol corresponding to the second power transmission scheme.

[0127] According to various embodiments, as shown in case (a) of FIG. 7B , when the polarity of the second magnetic element 795 is "N," the power transmission device 601 may transmit power based on a first power transmission scheme among multiple power transmission schemes. For example, the resonant frequency of the first power transmission scheme may be determined based on the capacitances C1+C2 of the first and second capacitors 771 and 772 and the inductance L of the coil 780. Alternatively, as shown in case (b) of FIG. 7B , when the polarity of the second magnetic element 797 is "S," the power transmission device 601 may transmit power based on a second power transmission scheme among multiple power transmission schemes. For example, the resonant frequency of the second power transmission scheme may be determined based on the capacitance C2 of the second capacitor 772 and the inductance L of the coil 780.

[0128] Although only two capacitors are shown in FIG. 7A and FIG. 7B for ease of description, the number of capacitors may not be limited thereto.

[0129] Figure 8 2 is a diagram illustrating an operation of determining a power transmission scheme by a power transmission apparatus through a sensor according to various embodiments.

[0130] Reference Figure 8 According to various embodiments, the processor 620 (eg, Figure 6 The processor 620) can be detected by the Hall sensor 850 (e.g., Figure 6 The Hall sensor 650) identifies the first magnetic element 840 (eg, Figure 6 For example, the Hall sensor 850 (e.g., Figure 6 The Hall sensor 650 may include a first sensor module 851 and a second sensor module 852. For example, the first sensor module 851 may be a sensor for detecting a first pole (e.g., an N pole), and the second sensor module 852 may be a sensor for detecting a second pole (e.g., an S pole).

[0131] although Figure 8 The first sensor module 851 and the second sensor module 852 are separately illustrated, but the first sensor module 851 and the second sensor module 852 may be implemented as one sensor.

[0132] According to various embodiments, the processor 620 may identify, through the first sensor module 851, whether the polarity of the first magnetic element 840 facing the Hall sensor 850 corresponds to the first pole (e.g., the north pole). The first sensor module 851 may output a voltage value 871 based on the polarity of the first magnetic element 840. For example, when the rotatable first magnetic element 840 completely faces the first pole (e.g., the north pole) relative to the Hall sensor 850, the first sensor module 851 may output a voltage value "V1" corresponding to a high level. For example, the voltage value "V1" may be greater than "VR1" indicating a first threshold value. On the other hand, when the rotatable first magnetic element 840 does not completely face the first pole (e.g., the north pole) relative to the Hall sensor 850, the first sensor module 851 may output a voltage value lower than "VR1."

[0133] According to various embodiments, the processor 620 may use the second sensor module 852 to identify whether the polarity of the first magnetic element 840 facing the Hall sensor 850 corresponds to the second pole (e.g., the S pole). The second sensor module 852 may output a voltage value 872 based on the polarity of the first magnetic element 840. When the rotatable first magnetic element 840 completely faces the second magnetic pole (e.g., the S pole) of the Hall sensor 850, the second sensor module 852 may output a voltage value "V2" corresponding to a high level. For example, the voltage value "V2" may be greater than "VR2" representing the second threshold value. On the other hand, when the rotatable first magnetic element 840 does not completely face the second magnetic pole (e.g., the S pole) relative to the Hall sensor 850, the second sensor module 852 may output a voltage value lower than "VR2."

[0134] According to various embodiments, the processor 620 may recognize the polarity and the strength of the magnetic force of the first magnetic element 840 through the Hall sensor 850 .

[0135] Figure 9 is a flowchart illustrating the operation of a power transmission apparatus according to various embodiments.

[0136] Reference Figure 9 According to various embodiments, in operation 901, the power transmission device 601 (eg, Figure 6 For example, the dormant state may mean that the ping signal and / or the signal for power transmission is not output to the power receiving device 602 (e.g., Figure 6 power receiving device).

[0137] According to various embodiments, in operation 903, when a magnetic force change (e.g., a magnetic force intensity change according to a polarity change or a magnetic force intensity change when there is no polarity change) is recognized, the power transmission device 601 may generate a magnetic field through the Hall sensor 650 (e.g., Figure 6Hall sensor) to identify the first magnetic element 640 (eg, Figure 6 The polarity of the first magnetic element 640 is determined. For example, when a change in magnetic force is detected, the power transmission device 601 may switch from a sleep state to an awake state (or an active state). For example, the awake state (or active state) may be a state in which a power transmission operation can be performed. In operation 905, the power transmission device 601 may determine whether the polarity of the first magnetic element 640 is "N pole."

[0138] According to various embodiments, operation 901 may be omitted. For example, when the power transmission device 601 is not in the sleep state, operation 903 may be performed directly. In this case, the power transmission device 601 may omit the operation of switching to the awake state (active state). In addition, even when no magnetic force change is recognized, the power transmission device 601 may recognize the polarity of the first magnetic element 640.

[0139] According to various embodiments, when the polarity of the first magnetic element 640 is the "N pole" ("Yes" in operation 905), the power transmission device 601 may determine whether the magnetic force intensity exceeds a first threshold value in operation 907. For example, the first threshold value may refer to the magnetic force intensity when the rotatable first magnetic element 640 faces the "N pole" at a predetermined angle or greater relative to the Hall sensor 650.

[0140] According to various embodiments, when the magnetic force intensity does not exceed the first threshold value (No in operation 907 ), the power transmission device 601 may enter the sleep state again without performing an operation for transmitting power.

[0141] According to various embodiments, when the magnetic field strength exceeds the first threshold ("Yes" in operation 907), in operation 909, the power transmission device 601 may perform an operation to detect the power receiving device 602 based on the first power transmission scheme. For example, the power transmission device 601 may output a ping signal having a resonant frequency corresponding to the first power transmission scheme at a preconfigured period. For example, when a specific packet corresponding to the ping signal is received, the power transmission device 601 may perform an operation for power transmission. On the other hand, when the specific packet corresponding to the ping signal is not received, the power transmission device 601 may enter a sleep state again without performing an operation for power transmission.

[0142] According to various embodiments, in operation 911, the power transmission device 601 may perform an operation of transmitting power to the power receiving device 602 based on a first power transmission scheme. For example, the power transmission device 601 may transmit a power transmission signal having a resonant frequency corresponding to the first power transmission scheme to the power receiving device 602. For example, if a specific packet is not received within a predetermined time, the power transmission device 601 may stop transmitting the power transmission signal and enter a sleep state again. Alternatively, if a packet indicating charging completion is received, the power transmission device 601 may stop transmitting the power transmission signal and enter a sleep state again.

[0143] According to various embodiments, when the polarity of the first magnetic element 640 is not the "N pole" ("No" in operation 905), the power transmission device 601 may determine whether the magnetic force intensity exceeds a second threshold value in operation 913. For example, the second threshold value may refer to the magnetic force intensity when the rotatable first magnetic element 640 faces the "S pole" at a predetermined angle or greater relative to the Hall sensor 650. In this case, the second threshold value may be the same as or different from the first threshold value.

[0144] According to various embodiments, when the magnetic force intensity does not exceed the second threshold value (No in operation 913 ), the power transmission device 601 may enter the sleep state again without performing an operation for transmitting power.

[0145] According to various embodiments, when the magnetic field strength exceeds the second threshold ("Yes" in operation 913), in operation 915, the power transmission device 601 may perform an operation to detect the power receiving device 602 based on the second power transmission scheme. For example, the power transmission device 601 may output a ping signal having a resonant frequency corresponding to the second power transmission scheme at a preconfigured period. For example, when a specific packet corresponding to the ping signal is received, the power transmission device 601 may perform an operation for power transmission. On the other hand, when the specific packet corresponding to the ping signal is not received, the power transmission device 601 may enter a sleep state again without performing an operation for power transmission.

[0146] According to various embodiments, in operation 917, the power transmission device 601 may perform an operation of transmitting power to the power receiving device 602 based on the second power transmission scheme. For example, the power transmission device 601 may transmit a power transmission signal having a resonant frequency corresponding to the second power transmission scheme to the power receiving device 602. For example, if a specific packet is not received within a predetermined time, the power transmission device 601 may stop transmitting the power transmission signal and enter a sleep state again. Alternatively, if a packet indicating charging completion is received, the power transmission device 601 may stop transmitting the power transmission signal and enter a sleep state again.

[0147] Figure 10 is a diagram illustrating an operation of outputting a ping signal by a power transmission device according to various embodiments.

[0148] Reference Figure 10 ,like Figure 10 As shown in case (a), the power transmission device according to the comparative embodiment may output a ping signal 1010 to detect the power receiving device. For example, the power transmission device according to the comparative embodiment may output the ping signal 1010 at a pre-configured period based on a specific power transmission scheme. In this case, the power transmission device according to the comparative embodiment may output the ping signal 1010 until the power receiving device is detected.

[0149] According to various embodiments, Figure 10 As shown in case (b), the power transmission device 601 (for example, Figure 6 The power transmission device of the present invention may not output the inspection signal 1010 in the sleep state. Figure 6 The power transmission device 601 may output the inspection signal 1010 at a pre-configured period when the magnetic force change is detected (e.g., the detection time point). In this case, when the magnetic force change is recognized, the power transmission device 601 may output the inspection signal 1010 via the Hall sensor 650 (e.g., Figure 6 The Hall sensor of the first magnetic element 640 is used to identify the polarity of the first magnetic element 640 and output the verification signal 1010 based on the power transmission scheme corresponding to the identified polarity. Figure 10 Compared with case (a), the power transmission device 601 can reduce power consumption.

[0150] Figure 11 is a flowchart illustrating the operation of a power transmission apparatus according to various embodiments.

[0151] Reference Figure 11 According to various embodiments, in operation 1101, the power transmission device 601 (eg, Figure 6 The power transmission device 601 may output a first check signal based on a first power transmission scheme and a second check signal based on a second power transmission scheme according to a pre-configured period. For example, the power transmission device 601 may output a first check signal of a first resonant frequency and a second check signal of a second resonant frequency alternately according to a pre-configured period. The power transmission device 601 may turn on / off the switch 660 (e.g., Figure 6The power transmission device 601 sequentially outputs a first verification signal and a second verification signal when the power transmission device 601 is switched on or off (a switch). According to an embodiment, the power transmission device 601 may output a first verification signal at a first specified time and a second verification signal at a second specified time. Alternatively, the power transmission device 601 may alternately output the first verification signal and the second verification signal within a time interval. For example, the power transmission device 601 can detect a power receiving device using a first power transmission scheme and / or a power receiving device using a second power transmission scheme by alternately outputting the first verification signal and the second verification signal. In other words, the power transmission device 601 can detect all power receiving devices using different power transmission schemes.

[0152] According to various embodiments, in operation 1103, the power transmission device 601 may use the Hall sensor 650 (eg, Figure 6 Hall sensor) to identify the first magnetic element 640 (eg, Figure 6 For example, when a change in magnetic force is detected, the power transmission device 601 can identify the polarity of the first magnetic element 640 (eg, Figure 6 Alternatively, the power transmission device 601 may also identify the polarity of the first magnetic element 640 (eg, Figure 6 For example, in operation 1105, the power transmission device 601 may identify whether the polarity of the first magnetic element 640 is “N pole”.

[0153] According to various embodiments, when the polarity of the first magnetic element 640 is the "N pole" ("Yes" in operation 1105), the power transmission device 601 may determine whether the magnetic strength exceeds a first threshold value in operation 1107. For example, the first threshold value may refer to the magnetic strength when the rotatable first magnetic element 640 is completely the "N pole" with respect to the Hall sensor 650.

[0154] According to various embodiments, when the magnetic force intensity does not exceed the first threshold (No in operation 1107 ), the power transmission device 601 may continuously output the first and second inspection signals without performing an operation for transmitting power.

[0155] According to various embodiments, when the magnetic force intensity exceeds the first threshold ("Yes" in operation 1107), in operation 1109, the power transmission device 601 may perform an operation to detect the power receiving device 602 based on the first power transmission scheme. For example, the power transmission device 601 may output a first ping signal having a resonant frequency corresponding to the first power transmission scheme at a preconfigured period. In other words, the power transmission device 601 may output only the first ping signal. For example, when a specific packet corresponding to the first ping signal is received, the power transmission device 601 may perform an operation for power transmission. On the other hand, when the specific packet corresponding to the first ping signal is not received, the power transmission device 601 may again output the first ping signal and the second ping signal without performing an operation for power transmission.

[0156] According to various embodiments, in operation 1111, the power transmission device 601 may perform an operation of transmitting power to the power receiving device 602 based on the first power transmission scheme. For example, the power transmission device 601 may transmit a power transmission signal having a resonant frequency corresponding to the first power transmission scheme to the power receiving device 602. For example, if a specific packet is not received within a predetermined time, the power transmission device 601 may stop transmitting the power transmission signal and re-output the first and second ping signals. Alternatively, if a packet indicating charging completion is received, the power transmission device 601 may stop transmitting the power transmission signal and re-output the first and second ping signals.

[0157] According to various embodiments, when the polarity of the first magnetic element 640 is not the "N pole" ("No" in operation 1105), the power transmission device 601 may determine whether the magnetic force intensity exceeds a second threshold value in operation 1113. For example, the second threshold value may refer to the magnetic force intensity when the rotatable first magnetic element 640 is completely the "S pole" relative to the Hall sensor 650. In this case, the second threshold value may be the same as or different from the first threshold value.

[0158] According to various embodiments, when the magnetic strength does not exceed the second threshold (No in operation 1113 ), the power transmission device 601 may output the first and second inspection signals again without performing an operation for transmitting power.

[0159] According to various embodiments, when the magnetic force intensity exceeds the second threshold ("Yes" in operation 1113), in operation 1115, the power transmission device 601 may perform an operation to detect the power receiving device 602 based on the second power transmission scheme. For example, the power transmission device 601 may output a second ping signal having a resonant frequency corresponding to the second power transmission scheme at a preconfigured period. For example, when a specific packet corresponding to the second ping signal is received, the power transmission device 601 may perform an operation for power transmission. On the other hand, when the specific packet corresponding to the second ping signal is not received, the power transmission device 601 may again output the first ping signal and the second ping signal without performing an operation for power transmission.

[0160] According to various embodiments, in operation 1117, the power transmission device 601 may perform an operation of transmitting power to the power receiving device 602 based on the second power transmission scheme. For example, the power transmission device 601 may transmit a power transmission signal having a resonant frequency corresponding to the second power transmission scheme to the power receiving device 602. For example, if a specific packet is not received within a predetermined time, the power transmission device 601 may stop transmitting the power transmission signal and re-output the first and second ping signals. Alternatively, if a packet indicating charging completion is received, the power transmission device 601 may stop transmitting the power transmission signal and re-output the first and second ping signals.

[0161] Figure 12 is a diagram illustrating an operation of outputting a ping signal by a power transmission device according to various embodiments.

[0162] Reference Figure 12 ,like Figure 12 As shown in case (a), the power transmission device (e.g., Figure 6 A power transmission device (e.g., a power transmission device using a first power transmission scheme) may output a first ping signal 1210 for a first power transmission scheme and a second ping signal 1220 for a second power transmission scheme to detect a power receiving device. For example, the power transmission device 601 may detect a power receiving device using the first power transmission scheme and / or a power receiving device using the second power transmission scheme by alternately outputting the first ping signal and the second ping signal. In other words, the power transmission device 601 may alternately output the first ping signal and the second ping signal to detect all power receiving devices using different power transmission schemes.

[0163] According to various embodiments, Figure 12 As shown in the cases (b) and (c), while alternately outputting the first interrogation signal and the second interrogation signal, based on identifying the first magnetic element 640 (for example, Figure 6The power transmission device 601 may output one of the first inspection signal 1210 and the second inspection signal 1220 in a preconfigured period when detecting the change in magnetic force (e.g., detecting a time point). When the change in magnetic force is recognized, the power transmission device 601 may output one of the first inspection signal 1210 and the second inspection signal 1220 through the Hall sensor 650 (e.g., Figure 6 The first magnetic element 640 is identified by a Hall sensor and a first inspection signal 1210 or a second inspection signal 1220 is output based on a power transmission scheme corresponding to the identified polarity.

[0164] According to various embodiments, Figure 12 As shown in case (b), when the polarity of the first magnetic element 640 is identified as "N pole", the power transmission device 601 can output the first inspection signal 1210 according to the pre-configured cycle. For another example, as Figure 12 As shown in case (c), when the polarity of the first magnetic element 640 is identified as “S pole”, the power transmission device 601 may output the second inspection signal 1220 according to a preconfigured cycle.

[0165] According to various embodiments, Figure 12 As shown in case (b), when the polarity of the first magnetic element 640 is identified as "S pole", the power transmission device 601 may output the first inspection signal 1210 according to a pre-configured period. Alternatively, as Figure 12 As shown in case (c), when the polarity of the first magnetic element 640 is identified as “N pole”, the power transmission device 601 may output the second inspection signal 1220 according to a preconfigured cycle.

[0166] An electronic device according to various embodiments may include: a sensor; a first magnetic element rotatable to have a first polarity or a second polarity in a first direction; and a processor. The processor is configured to: identify, based at least in part on the sensor, the polarity of the first magnetic element or the second magnetic element, and the strength of a magnetic force generated by the second magnetic element approaching the first magnetic element, the polarity being determined by the magnetic force, and the second magnetic element being included in an external electronic device; select a power transmission scheme from a plurality of power transmission schemes based on the polarity and the strength of the magnetic force; and wirelessly transmit power to the external electronic device based at least in part on the power transmission scheme.

[0167] The processor may be configured to determine a frequency of the ping signal and a frequency of the power transfer signal based on the power transfer scheme.

[0168] The processor may be configured to output a signal for controlling a switch included in the electronic device so as to determine a frequency of the ping signal and a frequency of the power transmission signal.

[0169] The plurality of power transfer schemes may have different resonant frequencies between the ping signal and the power transfer signal.

[0170] The processor may be configured to: based on identifying that the polarity of the magnetic force corresponds to the first pole, perform an operation of transmitting the power based on a first power transmission scheme; and based on identifying that the polarity of the magnetic force corresponds to the second pole, perform an operation of transmitting the power based on a second power transmission scheme different from the first power transmission scheme.

[0171] The processor may be configured to change the sleep state to an active state based on the recognition of the magnetic force when the electronic device is in the sleep state.

[0172] The processor may be configured to compare the intensity of the magnetic force with a threshold value, and start detecting an operation of the external electronic device based on determining that the intensity of the magnetic force is greater than the threshold value.

[0173] The processor may be configured to output a ping signal having a frequency determined based on the power transmission scheme.

[0174] The processor may be configured to, based on detecting the external electronic device, transmit a power transmission signal having a frequency determined based on the power transmission scheme to the external electronic device.

[0175] The processor may be configured to compare the intensity of the magnetic force with a threshold value, and based on determining that the intensity of the magnetic force is less than or equal to the threshold value, change the active state to the dormant state.

[0176] According to various embodiments, an operating method of an electronic device, the electronic device includes a first magnetic element, and the first magnetic element can be rotated to have a polarity of a first pole or a second pole in a first direction. The operating method may include: identifying the polarity of the first magnetic element or the second magnetic element, and the strength of the magnetic force generated by the second magnetic element approaching the first magnetic element, the polarity being determined by the magnetic force, and the second magnetic element being included in an external electronic device; based on the polarity and the strength of the magnetic force, determining a power transmission scheme from multiple power transmission schemes; and based on the power transmission scheme, wirelessly transmitting power to the external electronic device.

[0177] Determining the power transmission scheme may include determining a frequency of a ping signal and a frequency of a power transmission signal based on the power transmission scheme.

[0178] Determining the power transmission scheme may include outputting a signal for controlling a switch included in the electronic device so as to determine a frequency of a ping signal and a frequency of a power transmission signal.

[0179] The plurality of power transfer schemes may have different resonant frequencies between the ping signal and the power transfer signal.

[0180] The operating method of the electronic device may further include changing the sleep state to an active state based on the recognition of the magnetic force when the electronic device is in the sleep state.

[0181] The transmitting of the power may include comparing the intensity of the magnetic force with a threshold value, and detecting the external electronic device based on determining that the intensity of the magnetic force is greater than the threshold value.

[0182] The transmitting of the power may include outputting a check signal having a frequency corresponding to the power transmission scheme.

[0183] Based on detecting the external electronic device, a power transmission signal having a frequency determined based on the power transmission scheme is transmitted to the external electronic device.

[0184] The operating method of the electronic device may further include comparing the intensity of the magnetic force with a threshold value, and changing the active state to the sleep state based on determining that the intensity of the magnetic force is less than or equal to the threshold value.

[0185] According to various embodiments, a computer-readable recording medium may store instructions that are configured to cause a processor, when executed, to: identify the polarity of a first magnetic element or a second magnetic element, and the strength of a magnetic force generated by the second magnetic element approaching the first magnetic element, the polarity being determined by the magnetic force, the first magnetic element being included in an electronic device and rotatable to have a polarity of a first pole or a second pole in a first direction, and the second magnetic element being included in an external electronic device; determine a power transmission scheme from a plurality of power transmission schemes based on the polarity and the strength of the magnetic force; and wirelessly transmit power to the external electronic device based on the power transmission scheme.

[0186] Each of the above-mentioned elements of the electronic device may be configured by one or more components, and the name of the corresponding element may vary depending on the type of the electronic device. In various embodiments, the electronic device may include at least one of the above-mentioned elements, and some elements may be omitted from the electronic device, or other additional elements may be included in the electronic device. In addition, some elements of the electronic device according to various embodiments may be combined with each other to configure one entity, thereby making it possible to perform the functions of the corresponding elements in the same manner as before the combination.

[0187] The embodiments disclosed herein are provided only for describing the technical details of the present disclosure and helping to understand the present disclosure, and are not intended to limit the scope of the present disclosure. Therefore, it should be understood that the scope of the present disclosure includes any changes or various other embodiments based on the technical ideas of the present disclosure.

Claims

1. An electronic device comprising: sensor; a first magnetic element capable of being rotated to have a polarity of one of a first pole and a second pole in a first direction; as well as processor, Wherein, the processor is configured to: identifying, based at least in part on the sensor, a polarity of one of the first magnetic element and a second magnetic element, the polarity being determined by the magnetic force, and a strength of a magnetic force generated by the second magnetic element approaching the first magnetic element, the second magnetic element being included in an external electronic device, selecting a power transfer scheme from a plurality of power transfer schemes based at least in part on the polarity and the strength of the magnetic force, and Based on the power transmission scheme, power is wirelessly transmitted to the external electronic device.

2. The electronic device according to claim 1, wherein The processor is configured to determine a frequency of the ping signal and a frequency of the power transfer signal based on the power transfer scheme.

3. The electronic device according to claim 2, wherein: The processor is configured to output a signal for controlling a switch included in the electronic device so as to determine a frequency of the interrogation signal and a frequency of the power transmission signal.

4. The electronic device according to claim 1, wherein Each of the plurality of power transfer schemes has a different resonant frequency between the ping signal and the power transfer signal.

5. The electronic device according to claim 1, wherein The processor is further configured to: performing an operation of transmitting the power based on a first power transmission scheme based on recognizing that the polarity of the magnetic force corresponds to the first pole, and Based on recognizing that the polarity of the magnetic force corresponds to the second pole, an operation of transmitting the power is performed based on a second power transmission scheme different from the first power transmission scheme. The electronic device according to claim 1 , wherein: The processor is further configured to change the sleep state to an active state based on the recognition of the magnetic force when the electronic device is in the sleep state.

7. The electronic device according to claim 1, wherein The processor is further configured to compare the intensity of the magnetic force with a threshold value, and start detecting an operation of the external electronic device based on determining that the intensity of the magnetic force is greater than the threshold value.

8. The electronic device according to claim 7, wherein: The processor is further configured to output a ping signal having a frequency determined based on the power transmission scheme.

9. The electronic device according to claim 7, wherein: The processor is further configured to, based on detecting the external electronic device, transmit a power transmission signal having a frequency determined based on the power transmission scheme to the external electronic device.

10. The electronic device according to claim 6, wherein: The processor is further configured to compare the intensity of the magnetic force with a threshold value, and based on determining that the intensity of the magnetic force is less than or equal to the threshold value, change the active state to the dormant state.

11. A method for operating an electronic device, the electronic device comprising a first magnetic element, the first magnetic element being rotatable to have a polarity of one of a first polarity and a second polarity in a first direction, the method comprising: identifying a polarity of one of a first magnetic element and a second magnetic element, the polarity being determined by the magnetic force, and a strength of a magnetic force generated by the second magnetic element approaching the first magnetic element, the second magnetic element being included in an external electronic device; selecting a power transfer scheme from a plurality of power transfer schemes based at least in part on the polarity and the strength of the magnetic force; as well as Based on the power transmission scheme, power is wirelessly transmitted to the external electronic device.

12. The operating method according to claim 11, wherein: Determining the power transmission scheme includes determining a frequency of a ping signal and a frequency of a power transmission signal based on the power transmission scheme.

13. The operating method according to claim 12, wherein: Determining the power transmission scheme includes outputting a signal for controlling a switch included in the electronic device so as to determine a frequency of the interrogation signal and a frequency of the power transmission signal.

14. The operating method according to claim 11, wherein: Each of the plurality of power transfer schemes has a different resonant frequency between the ping signal and the power transfer signal.

15. The operating method according to claim 11, further comprising: Based on the recognition of the magnetic force when the electronic device is in a sleep state, the sleep state is changed to an active state.

Images