Electronic device for supporting wireless charging using magnet and driving method thereof

Abstract

Embodiments of the present disclosure relate to an electronic device for supporting wireless charging using a magnet and a driving method thereof. The electronic device comprises: a coil antenna (210) for wireless charging; a battery configured to be charged by power received through the coil antenna (210); and first magnet assemblies (310, 1610) disposed adjacent to the coil antenna (210), detachably attached to a second magnet assembly (320) of a power supply device for the wireless charging, and including a first magnet (402). The first magnet (402) may include: an inner portion (410) having a first width; an outer portion (420) disposed farther from the coil antenna (210) than the inner portion (410) and having a second width smaller than the first width; and a gap (430) disposed between the inner portion (410) and the outer portion (420) and disposed farther from the coil antenna (210) than the inner portion (410). Various other embodiments may further be included.

Description

Electronic device supporting wireless charging using magnets and method of driving the same

[0001] Embodiments of the present disclosure relate to an electronic device that supports wireless charging using magnets and a method for operating the same.

[0002] The Wireless Power Consortium (WPC) is an organization established for the purpose of defining and disseminating the Qi wireless charging standard. The WPC announced Qi2 as a wireless charging standard that uses magnets to align wireless power transmitters and receivers, thereby increasing charging efficiency and speed.

[0003] According to the Qi2 standard, wireless charging supports high-speed wireless charging of up to approximately 15W, and the wireless power transmitter and wireless power receiver can be aligned with each other using magnets.

[0004] With the release of the Qi2 standard, active research and development is underway regarding technologies for embedding magnets in electronic devices or in detachable cover devices (e.g., cover accessories) attached to electronic devices. The magnetic field (e.g., magnetic field or B-field) of magnets contained in electronic devices or cover devices can cause performance degradation in at least some components of the electronic device. For example, the magnetic field of a magnet can cause magnetic interference in the coils of an electronic device used for wireless charging. For example, the magnetic field of a magnet can cause malfunctions in the camera module of an electronic device (e.g., errors in the autofocus function).

[0005] The information described above may be provided as related art for the purpose of aiding understanding of the present disclosure. No claim or determination is made as to whether any of the foregoing may be applied as prior art in relation to the present disclosure.

[0006] Embodiments of the present disclosure may provide an electronic device and a method of driving the same, and a recording medium, which can reduce the degradation of the performance of a component of an electronic device by the magnetic field of a magnet (e.g., magnetic field or B-field).

[0007] The technical problems to be solved in this disclosure are not limited to those mentioned above, and other unmentioned technical problems will be clearly understood by those skilled in the art to which this invention belongs from the description below.

[0008] An electronic device according to one embodiment of the present disclosure (e.g., the electronic device (101) of FIG. 1) comprises a coil antenna for wireless charging (e.g., the coil antenna (210) of FIG. 2), a battery configured to be charged by power received through the coil antenna (210), and a first magnet assembly (e.g., the first magnet assembly (310, 1610) of FIG. 4) disposed adjacent to the coil antenna (210) and detachably attached to a second magnet assembly (e.g., the second magnet assembly (320) of FIG. 3) of the power supply for wireless charging, and comprising a first magnet (e.g., the first magnet assembly (402) of FIG. 4), wherein the first magnet (402) comprises an inner portion having a first width (e.g., the inner portion (410) of FIG. 4), an outer portion disposed further from the coil antenna (210) than the inner portion (410) and having a second width smaller than the first width (e.g., FIG. 4 It may include an outer part (420), and an air gap (e.g., the air gap (430) of FIG. 4) disposed between the inner part (410) and the outer part (420) and disposed further from the coil antenna (210) than the inner part (410).

[0009] An electronic device (101) according to one embodiment of the present disclosure comprises a coil antenna (210) for wireless charging, a battery configured to be charged by power received through the coil antenna (210), and a first magnet assembly (310, 1610) comprising a first magnet (402) disposed adjacent to the coil antenna (210) and detachably attached to a second magnet assembly (320) of a power supply for wireless charging, wherein the first magnet (402) comprises an inner portion (410), an outer portion (420) disposed further from the coil antenna (210) than the inner portion (410), and a gap (430) disposed between the inner portion (410) and the outer portion (420) and disposed further from the coil antenna (210) than the inner portion (410), and the first magnet assembly (310, 1610) comprising at least partially It includes a shielding member (440) arranged to surround, wherein the shielding member (440) includes a bottom portion (440a) disposed between the battery of the electronic device (101) and the first magnet (402), and a first side portion (440b) extending from one side of the bottom portion (440a) and covering a portion of the side of the inner portion (410), and when the first magnet assembly (310, 1610) is attached to the second magnet assembly (320), the first magnet assembly (310, 1610) and the second magnet assembly (320) are concentric with respect to each other, and the distance between the first side portion (440b) of the shielding member (440) and the center of the first magnet assembly (310, 1610) is such that the center of the second magnet assembly (320) and the second magnet It can correspond to the distance between the inner parts (1010) of the assembly (320).

[0010] Embodiments of the present disclosure can reduce performance degradation of electronic device components caused by the magnetic field of a magnet (e.g., B-field).

[0011] Other aspects, features, and advantages according to specific embodiments of the present disclosure will become more apparent from the accompanying drawings and description.

[0012] FIG. 1 is a block diagram of an electronic device in a network environment according to one embodiment.

[0013] FIG. 2 illustrates a wireless charging system according to one embodiment.

[0014] FIG. 3 is a conceptual diagram illustrating an electronic device according to one embodiment, a cover device detachably attached to the electronic device, and a power supply device.

[0015] FIG. 4 is a plan view illustrating a first magnet according to one embodiment.

[0016] Figure 5 is a cross-sectional view of a portion of the first magnet shown in Figure 4.

[0017] Figure 6 is the result of an experiment on the magnetic field of the first magnet according to the embodiment of Figure 5.

[0018] FIG. 7 is a drawing illustrating a first magnet and a shielding member according to one embodiment.

[0019] FIG. 8 is a cross-sectional view of a portion of the magnet and shielding member shown in FIG. 7.

[0020] Figure 9 is the result of an experiment on the magnetic field of the first magnet according to the embodiment of Figure 8.

[0021] FIGS. 10a and FIGS. 10b are drawings illustrating a state in which a first magnet and a second magnet of a power supply device are aligned according to one embodiment.

[0022] FIG. 11 is the result of testing the AC resistance of a coil when the first magnet and the second magnet of the power supply device are aligned according to one embodiment.

[0023] FIG. 12 is the result of an experiment on the magnetic field of the first magnet according to the embodiments of FIG. 10a and FIG. 10b.

[0024] FIG. 13 is a drawing illustrating a first magnet and a shielding member according to one embodiment.

[0025] FIG. 14 is a drawing illustrating a first magnet and a shielding member according to one embodiment.

[0026] FIG. 15 is a conceptual diagram illustrating the cross-sectional structure of a first magnet by region according to one embodiment.

[0027] FIG. 16 is a diagram illustrating the arrangement of magnets of an electronic device according to one embodiment.

[0028] FIG. 17 is a drawing illustrating a state in which a power supply device is attached to an electronic device according to one embodiment.

[0029] FIG. 18 is a flowchart illustrating the operation of a wireless charging system according to one embodiment.

[0030] Each of the embodiments described with reference to the drawings of the present disclosure may be configured independently as a single embodiment. For example, the embodiment of FIG. 1 and the embodiment of FIG. 2 may each be configured independently of each other. Each of the embodiments described with reference to the drawings of the present disclosure may operate independently as a single embodiment. For example, the embodiment of FIG. 1 and the embodiment of FIG. 2 may each operate independently of each other.

[0031] At least two of the embodiments described with reference to the drawings of the present disclosure may be combined. For example, at least a part of the embodiment of FIG. 1 and at least a part of the embodiment of FIG. 2 may be combined with each other. At least two of the embodiments described with reference to the drawings of the present disclosure may be combined and operated. For example, at least a part of the embodiment of FIG. 1 and at least a part of the embodiment of FIG. 2 may be combined and operated with each other.

[0032] When at least two of the embodiments described with reference to the drawings of the present disclosure are combined, at least some of the configurations and / or at least some of the operations included in each embodiment may be omitted. For example, when the embodiment of FIG. 1 and the embodiment of FIG. 2 are combined, at least some of the configurations and / or at least some of the operations included in the embodiment of FIG. 1 may be omitted, and at least some of the configurations and / or at least some of the operations included in the embodiment of FIG. 2 may be omitted.

[0033] FIG. 1 is a block diagram of an electronic device (101) in a network environment (100) according to various embodiments. Referring to FIG. 1, in the network environment (100), the electronic device (101) may communicate with an electronic device (102) through a first network (198) (e.g., a short-range wireless communication network) or may communicate with at least one of an electronic device (104) or a server (108) through a second network (199) (e.g., a long-range wireless communication network). According to one embodiment, the electronic device (101) may communicate with the electronic device (104) through a server (108). According to one embodiment, the electronic device (101) may include a processor (120), memory (130), input module (150), sound output module (155), display module (160), audio module (170), sensor module (176), interface (177), connection terminal (178), haptic module (179), camera module (180), power management module (188), battery (189), communication module (190), subscriber identification module (196), or antenna module (197). In some embodiments, at least one of these components (e.g., connection terminal (178)) may be omitted from the electronic device (101), or one or more other components may be added. In some embodiments, some of these components (e.g., sensor module (176), camera module (180), or antenna module (197)) may be integrated into a single component (e.g., display module (160)).

[0034] The processor (120) can control at least one other component (e.g., a hardware or software component) of the electronic device (101) connected to the processor (120) by executing software (e.g., a program (140)), and can perform various data processing or operations. According to one embodiment, as at least part of the data processing or operations, the processor (120) can store commands or data received from other components (e.g., a sensor module (176) or a communication module (190)) in volatile memory (132), process the commands or data stored in volatile memory (132), and store the resulting data in non-volatile memory (134). According to one embodiment, the processor (120) may include a main processor (121) (e.g., a central processing unit or an application processor) or an auxiliary processor (123) that can operate independently or together with it (e.g., a graphics processing unit, a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor). For example, if the electronic device (101) includes a main processor (121) and an auxiliary processor (123), the auxiliary processor (123) may be configured to use less power than the main processor (121) or to be specialized for a designated function. The auxiliary processor (123) may be implemented separately from the main processor (121) or as part thereof.

[0035] The auxiliary processor (123) may control at least some of the functions or states associated with at least one component of the electronic device (101) (e.g., display module (160), sensor module (176), or communication module (190)) on behalf of the main processor (121) while the main processor (121) is in an inactive (e.g., sleep) state, or together with the main processor (121) while the main processor (121) is in an active (e.g., application execution) state. According to one embodiment, the auxiliary processor (123) (e.g., image signal processor or communication processor) may be implemented as part of another functionally related component (e.g., camera module (180) or communication module (190)). According to one embodiment, the auxiliary processor (123) (e.g., neural network processing unit) may include a hardware structure specialized for processing an artificial intelligence model. The artificial intelligence model may be generated through machine learning. Such learning may be performed, for example, on the electronic device (101) itself where the artificial intelligence model is executed, or through a separate server (e.g., server (108)). The learning algorithm may include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but is not limited to the examples described above. The artificial intelligence model may include a plurality of artificial neural network layers.An 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), a deep Q-network, or a combination of two or more of the above, but is not limited to the examples described above. In addition to the hardware structure, the artificial intelligence model may include a software structure, either additionally or substantially.

[0036] The memory (130) can store various data used by at least one component of the electronic device (101) (e.g., processor (120) or sensor module (176)). The data may include, for example, input data or output data for software (e.g., program (140)) and related commands. The memory (130) may include volatile memory (132) or non-volatile memory (134).

[0037] The program (140) may be stored as software in memory (130) and may include, for example, an operating system (142), middleware (144), or an application (146).

[0038] The input module (150) can receive commands or data to be used for a component of the electronic device (101) (e.g., processor (120)) from outside the electronic device (101) (e.g., user). The input module (150) may include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., a stylus pen).

[0039] The sound output module (155) can output a sound signal to the outside of the electronic device (101). The sound output module (155) may include, for example, a speaker or a receiver. The speaker may be used for general purposes, such as multimedia playback or recording playback. The receiver may be used to receive incoming calls. According to one embodiment, the receiver may be implemented separately from the speaker or as part thereof.

[0040] The display module (160) can visually provide information to an external (e.g., user) of the electronic device (101). The display module (160) may include, for example, a display, a holographic device, or a projector and a control circuit for controlling said device. According to one embodiment, the display module (160) may include a touch sensor configured to detect a touch, or a pressure sensor configured to measure the intensity of the force generated by said touch.

[0041] The audio module (170) can convert sound into an electrical signal or, conversely, convert an electrical signal into sound. According to one embodiment, the audio module (170) can acquire sound through the input module (150) or output sound through the sound output module (155) or an external electronic device (e.g., electronic device (102)) (e.g., speaker or headphones) connected directly or wirelessly to the electronic device (101).

[0042] The sensor module (176) can detect the operating state of the electronic device (101) (e.g., power or temperature) or the external environmental state (e.g., user state) and generate an electrical signal or data value corresponding to the detected state. According to one embodiment, the sensor module (176) may include, for example, a gesture sensor, a gyroscope sensor, a barometric pressure sensor, a magnetic sensor, an accelerometer sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biosensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

[0043] The interface (177) may support one or more specified protocols that can be used for the electronic device (101) to be connected directly or wirelessly to an external electronic device (e.g., electronic device (102)). According to one embodiment, the interface (177) may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

[0044] The connection terminal (178) may include a connector through which the electronic device (101) can be physically connected to an external electronic device (e.g., electronic device (102)). According to one embodiment, the connection terminal (178) may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

[0045] The haptic module (179) can convert an electrical signal into a mechanical stimulus (e.g., vibration or movement) or an electrical stimulus that can be perceived by the user through tactile or kinesthetic senses. According to one embodiment, the haptic module (179) may include, for example, a motor, a piezoelectric element, or an electric stimulation device.

[0046] The camera module (180) can capture still images and video. According to one embodiment, the camera module (180) may include one or more lenses, image sensors, image signal processors, or flashes.

[0047] The power management module (188) can manage power supplied to the electronic device (101). According to one embodiment, the power management module (188) can be implemented, for example, as at least part of a power management integrated circuit (PMIC).

[0048] The battery (189) can supply power to at least one component of the electronic device (101). According to one embodiment, the battery (189) may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

[0049] The communication module (190) can support the establishment of a direct (e.g., wired) communication channel or a wireless communication channel between an electronic device (101) and an external electronic device (e.g., electronic device (102), electronic device (104), or server (108)), and the performance of communication through the established communication channel. The communication module (190) may include one or more communication processors that operate independently of the processor (120) (e.g., application processor) and support direct (e.g., wired) communication or wireless communication. According to one embodiment, the communication module (190) may include a wireless communication module (192) (e.g., cellular communication module, short-range wireless communication module, or GNSS (global navigation satellite system) communication module) or a wired communication module (194) (e.g., LAN (local area network) communication module, or power line communication module). The corresponding communication module among these communication modules can communicate with an external electronic device (104) through a first network (198) (e.g., a short-range communication network such as Bluetooth, WiFi (wireless fidelity) direct, or IrDA (infrared data association)) or a second network (199) (e.g., a legacy cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a LAN or WAN). These various types of communication modules may be integrated into a single component (e.g., a single chip) or implemented as multiple separate components (e.g., multiple chips). The wireless communication module (192) can identify or authenticate the electronic device (101) within a communication network such as the first network (198) or the second network (199) using subscriber information (e.g., International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module (196).

[0050] The wireless communication module (192) can support 5G networks and next-generation communication technologies following 4G networks, for example, new radio access technology. NR access technology can support high-speed transmission of high-capacity data (enhanced mobile broadband (eMBB)), minimization of terminal power and connection of multiple terminals (massive machine type communications (mMTC)), or high reliability and low latency (ultra-reliable and low-latency communications (URLLC)). The wireless communication module (192) can support a high-frequency band (e.g., mmWave band) to achieve a high data transmission rate, for example. The wireless communication module (192) can support various technologies for securing performance in the high-frequency band, such as beamforming, massive MIMO (multiple-input and multiple-output), full-dimensional MIMO (FD-MIMO), array antenna, analog beam-forming, or large-scale antenna. The wireless communication module (192) can support various requirements specified in the electronic device (101), external electronic device (e.g., electronic device (104)), or network system (e.g., second network (199)). According to one embodiment, the wireless communication module (192) may support a Peak data rate (e.g., 20 Gbps or more) for eMBB realization, loss coverage (e.g., 164 dB or less) for mMTC realization, or U-plane latency (e.g., downlink (DL) and uplink (UL) each 0.5 ms or less, or round trip 1 ms or less) for URLLC realization.

[0051] An antenna module (197) can transmit a signal or power to or from an external source (e.g., an external electronic device). According to one embodiment, the antenna module (197) may include an antenna comprising a radiator made of a conductor or a conductive pattern formed on a substrate (e.g., a PCB). According to one embodiment, the antenna module (197) may include a plurality of antennas (e.g., an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network, such as a first network (198) or a second network (199), may be selected from the plurality of antennas, for example, by a communication module (190). A signal or power may be transmitted or received between the communication module (190) and an external electronic device through the selected at least one antenna. According to some embodiments, in addition to the radiator, other components (e.g., a radio frequency integrated circuit (RFIC)) may be additionally formed as part of the antenna module (197).

[0052] According to various embodiments, the antenna module (197) may form a mmWave antenna module. According to one embodiment, the mmWave antenna module may include a printed circuit board, an RFIC disposed on or adjacent to a first surface (e.g., bottom surface) of the printed circuit board and capable of supporting a specified high frequency band (e.g., mmWave band), and a plurality of antennas (e.g., array antennas) disposed on or adjacent to a second surface (e.g., top surface or side surface) of the printed circuit board and capable of transmitting or receiving a signal of the specified high frequency band.

[0053] At least some of the above components can be connected to each other via a communication method between peripheral devices (e.g., bus, GPIO (general purpose input and output), SPI (serial peripheral interface), or MIPI (mobile industry processor interface)) and exchange signals (e.g., commands or data) with each other.

[0054] According to one embodiment, commands or data may be transmitted or received between the electronic device (101) and an external electronic device (104) through a server (108) connected to a second network (199). Each of the external electronic devices (102, or 104) may be the same or a different type of device as the electronic device (101). According to one embodiment, all or part of the operations performed on the electronic device (101) may be performed on one or more of the external electronic devices (102, 104, or 108). For example, if the electronic device (101) needs to perform a function or service automatically or in response to a request from a user or another device, the electronic device (101) may request one or more external electronic devices to perform at least part of the function or service instead of performing the function or service itself or additionally. One or more external electronic devices that receive the above request may execute at least part of the requested function or service, or additional 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 is or additionally processed as at least part of the response to the request. For this purpose, for example, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used. The electronic device (101) may provide ultra-low latency services using, for example, distributed computing or mobile edge computing. 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 one embodiment, the external electronic device (104) or the server (108) may be included within a second network (199).The electronic device (101) can be applied to intelligent services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology and IoT-related technology.

[0055] The electronic device according to the various embodiments disclosed in this disclosure may be a device of various forms. 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 consumer electronics device. The electronic device according to the embodiments of this disclosure is not limited to the devices described above.

[0056] The various embodiments of the present disclosure and the terms used therein are not intended to limit the technical features described in the present disclosure to specific embodiments, and should be understood to include various modifications, equivalents, or substitutions of said embodiments. In connection with the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of said items unless the relevant context clearly indicates otherwise. In the present disclosure, 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” each may include any one of the items listed together in the corresponding phrase, or all possible combinations thereof. Terms such as “first,” “second,” or “first” or “second” may be used simply to distinguish said components from other said components and do not limit said components in any other aspect (e.g., importance or order). Where any (e.g., 1st) component is referred to as "coupled" or "connected" to another (e.g., 2nd) component, with or without the terms "functionally" or "communicationly," it means that said any component may be connected to said other component directly (e.g., via a wire), wirelessly, or through a third component.

[0057] The term “module” as used in various embodiments of the present disclosure may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit, for example. A module may be a component formed integrally, or a minimum unit of said component or a part thereof that performs one or more functions. For example, a module may be implemented in the form of an application-specific integrated circuit (ASIC).

[0058] Various embodiments of the present disclosure may 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)) readable by a machine (e.g., electronic device (101)). For example, a processor (e.g., processor (120)) of the machine (e.g., electronic device (101)) may call at least one of the one or more instructions stored in the storage medium and execute it. This enables the machine to be operated to perform at least one function according to the at least one called instruction. The one or more instructions may include code generated by a compiler or code that can be executed by an interpreter. The storage medium readable by the machine may be provided in the form of a non-transitory storage medium. Here, 'non-temporary' simply means that the storage medium is a tangible device and does not contain a signal (e.g., electromagnetic waves), and the term does not distinguish between cases where data is stored semi-permanently and cases where it is stored temporarily.

[0059] According to one embodiment, the method according to the various embodiments disclosed herein may be provided by being included in a computer program product. The computer program product may be traded between a seller and a buyer as a product. The computer program product may be distributed in the form of a device-readable storage medium (e.g., compact disc read-only memory (CD-ROM)) or an application store (e.g., Play Store). TM It can be distributed online (e.g., downloaded or uploaded) through ) or directly between two user devices (e.g., smartphones). In the case of online distribution, at least a portion of the computer program product may be temporarily stored or temporarily created on a device-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or a relay server.

[0060] According to various embodiments, each component (e.g., module or program) of the components described above may include a singular or multiple entities, and some of the multiple entities may be separated and placed in other components. According to various embodiments, one or more of the components or operations of the aforementioned components may be omitted, or one or more other components or operations may be added. Generally or additionally, multiple components (e.g., module or program) may be integrated into a single component. In this case, the integrated component may perform one or more functions of each of the multiple components in the same or similar manner as those performed by the corresponding component among the multiple components prior to integration. According to various embodiments, operations performed by the module, program, or other components may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or one or more other operations may be added.

[0061] FIG. 2 illustrates a wireless charging system according to one embodiment.

[0062] Referring to FIG. 2, a wireless charging system according to one embodiment may include a power supply device (201) (e.g., electronic device (102) of FIG. 1) and a power receiving device (202) (e.g., electronic device (101) of FIG. 1).

[0063] A power supply device (201) (e.g., electronic device (102) of FIG. 1) can transmit power wirelessly. A power receiving device (202) (e.g., electronic device (101) of FIG. 1) can receive power wirelessly. A wireless charging system can perform wireless charging based on a specified charging protocol. The specified charging protocol may include a baseline power profile (BPP), an extended power profile (EPP), and a magnetic power profile (MPP) according to Qi standards (e.g., Qi 2.0 standard, Qi 2.1 standard).

[0064] A wireless charging system according to one embodiment can support general wireless charging (in other words, low-speed wireless charging) of up to approximately 5W by supporting BPP. BPP may be low-speed wireless charging based on unidirectional communication in which data is transmitted only from a power receiving device (202) to a power supply device (201). When wireless charging according to BPP, the power supply device (201) can wirelessly transmit power of up to approximately 5W to the power receiving device (202).

[0065] A wireless charging system according to one embodiment can support high-speed wireless charging of up to approximately 15W by supporting EPP. EPP may be high-speed wireless charging based on bidirectional communication between a power supply unit (201) and a power receiving unit (202). When wireless charging according to EPP, the power supply unit (201) can wirelessly transmit up to approximately 15W of power to the power receiving unit (202).

[0066] A wireless charging system according to one embodiment can support high-speed wireless charging of about 15W or more based on the alignment state of a power supply device (201) and a power receiving device (202) using magnets, by supporting a specified wireless charging, e.g., MPP. When the wireless charging system operates in MPP charging mode, higher power can be transmitted wirelessly than when it operates in EPP charging mode. When wireless charging according to MPP, after the power supply device (201) and the power receiving device (202) confirm their mutual alignment state using magnets, the power supply device (201) can wirelessly transmit about 15W or more of power to the power receiving device (202).

[0067] According to one embodiment, the power receiving device (202) may include a coil antenna (or conductive pattern or coil) (210), a wireless charging circuit (220), a power management circuit (230), a battery (240) (e.g., battery (189) of FIG. 1), a memory (288) (e.g., memory (130) of FIG. 1), and a processor (299) (e.g., processor (120) of FIG. 1). According to one embodiment, the power supply device (201) may include components that are identical to or substantially identical to at least a part of the power receiving device (202). For example, the power supply device (201) may include a coil that is at least partially similar to the coil antenna (210) described with reference to FIG. 2, a transmitting IC configured to transmit power wirelessly through the coil, and a control unit for controlling the overall operation of the power supply device (201).

[0068] According to one embodiment, a wireless charging circuit (220) (e.g., a circuit configured in the power management module (188) of FIG. 1) can be awakened by a power signal (e.g., a digital ping) received from a power supply unit (201) through a coil antenna (210). The wireless charging circuit (220) can be configured to perform a given function (e.g., charging a battery (240) and communicating with the power supply unit (201) for this purpose) using power supplied from the power supply unit (201). According to one embodiment, the wireless charging circuit (220) may include a rectifier (250), a DC-DC converter (255), a communication circuit (260), and a control circuit (270). According to one embodiment, the rectifier (250), the DC-DC converter (255), the communication circuit (260), and the control circuit (270) may be configured as a single integrated circuit (IC). For example, one IC may be configured to perform operations for rectification, DC-DC converting, communication, and control of the wireless charging circuit (220).

[0069] According to one embodiment, the control circuit (270) may be configured in a separate IC from at least one of the communication circuit (260), the rectifier (250), and the DC-DC converter (255).

[0070] According to one embodiment, at least one of a rectifier (250), a DC-DC converter (255), a communication circuit (260), and a control circuit (270) can be configured in a single IC together with a power management circuit (230).

[0071] According to one embodiment, the power management circuit (230) may include a converter for supplying power to a battery (240) and a load (e.g., a processor (299)). For example, it may include a buck-boost charger and / or a direct charger. The direct charger may be a switched capacitor voltage divider (SCVD) converter and may change the input voltage and output voltage in an n:1 ratio. The power management circuit (230) may include a power management integrated circuit (PMIC) for supplying appropriate voltage and current to various loads (e.g., a processor, a display, or a sensor).

[0072] The memory (288) (e.g., memory (130) of FIG. 1) and the processor (299) (e.g., processor (120) of FIG. 1) may be a load circuit (in other words, a system) driven by power supplied from a wireless charging circuit (220) and / or power supplied from a battery (240) through a power management circuit (230). In addition, the load circuit may include a display (e.g., display module (160) of FIG. 1) and / or a communication circuit (e.g., communication module (190) of FIG. 1).

[0073] The coil antenna (210) (e.g., receiving coil) may be a spiral-type coil wound multiple times in a clockwise or counterclockwise direction. When the power receiving device (202) is placed on the charging pad of the power supply device (201), the coil antenna (210) may be aligned with the coil of the power supply device (201). The power receiving device (202) may receive power from the power supply device (201) through electrical coupling between the transmitting coil (e.g., the coil of the power supply device (201)) and the receiving coil (e.g., the coil antenna (210)). The coil antenna (210) may resonate at the same frequency as the frequency at which the coil of the power supply device (201) resonates. The power receiving device (202) may further include a resonance circuit to cause the coil antenna (210) to resonate at a specific frequency (e.g., a frequency specified in the WPC (wireless power consortium) standard). The coil antenna (210) can be used as an antenna for data communication (e.g., in-band communication) in addition to power reception. According to one embodiment, the power receiving device (202) may include a plurality of coil antennas (210).

[0074] A rectifier (250) may be configured to rectify (i.e., convert current from AC (alternating current) to DC (direct current)) power received from a power supply unit (201) through a coil antenna (210) and output it to a DC-DC converter (255). The DC-DC converter (e.g., LDO (low dropout)) (255) may convert the voltage value (in other words, voltage level) of the power received from the rectifier (250) and rectified by the rectifier (250) into a specified voltage value and output it to a power management circuit (230).

[0075] A power management circuit (230) (e.g., a circuit configured in the power management module (188) of FIG. 1) can adjust the voltage value and / or current value (in other words, current level) of the power received from the wireless charging circuit (220) and supply it to the battery (240) and the load circuit. For example, the power management circuit (230) may include a buck converter that outputs a voltage of the power supplied from the wireless charging circuit (220) by stepping it down and / or a boost converter that outputs a voltage of the received power by stepping it up.

[0076] The communication circuit (260) may be configured to perform data communication (e.g., in-band communication) with the power supply device (201) through the coil antenna (210) using power supplied from the power supply device (201) through the rectifier (250). For example, the communication circuit (260) may receive data from the control circuit (270) and transmit the received data to the power supply device (201) by embedding it in a power signal received from the power supply device (201). A method of embedding data in the power signal may utilize a technique of modulating the amplitude and / or frequency of the power signal. For example, the communication circuit (260) may change the amplitude of the power signal by switching control that opens and closes a switch located on the electrical path connecting the coil antenna (210) and the ground of the power receiving device (202). The communication circuit (260) can demodulate the power signal transmitted from the power supply unit (201) to the coil antenna (210) to obtain the data transmitted by the power supply unit (201) to the power receiving unit (202). The communication circuit (260) can transmit the obtained data to the control circuit (270).

[0077] The control circuit (270) can be awakened by a power signal (e.g., digital ping) supplied from the power supply unit (201) through the rectifier (250). The control circuit (270) can be configured to use the power supplied from the power supply unit (201) through the rectifier (250) to communicate data with the processor (299) through a communication interface provided in the power receiving unit (202) and to communicate with the power supply unit for charging the battery (240) through the communication circuit (260). For example, the control circuit (270) can obtain information regarding the charging status from the power supply unit (201) through the communication circuit (260) and provide the obtained information to the processor (299) through the first communication interface (211) (e.g., I2C (inter integrated circuit)).

[0078] According to one embodiment, the control circuit (270) may set the charging mode of the wireless charging circuit (220) to an MPP mode or an EPP mode for charging the battery (240) at high speed based on a signal received from a processor (299) (e.g., an MCU (microcontroller unit) or an AP (application processor)) through a second communication interface (222) (e.g., a GPIO (general-purpose input / output)). The control circuit (270) may set the charging mode of the wireless charging circuit (220) to a BPP mode based on a signal received from the processor (299), and the BPP mode may be a mode for charging the battery (240) at a relatively low speed compared to the MPP mode or the EPP mode.

[0079] FIG. 3 is a conceptual diagram illustrating an electronic device (101), a cover device (300) (e.g., a cover accessory) detachable from the electronic device (101), and a power supply device (201) according to one embodiment.

[0080] Referring to FIG. 3, an electronic device (101) according to one embodiment may be configured to use a magnet for alignment between a coil antenna (210) of the electronic device (101) (e.g., the coil antenna (210) of FIG. 2) and a Tx coil (330) of a power supply device (201). For example, the power supply device (201) may include a Tx coil (330) and a second magnet assembly (320) surrounding the outer edge of the Tx coil (330). A cover device (300) that is detachable from the electronic device (101) may include a first magnet assembly (310) corresponding to the second magnet assembly (320). The electronic device (101) may align the Tx coil (330) of the power supply device (201) to the coil antenna (210) by utilizing the magnetic force between the second magnet assembly (320) and the first magnet assembly (310).

[0081] According to one embodiment, the electronic device (101) may be configured to support a specified wireless charging protocol, for example, the Qi 2.0 standard or the Qi 2.1 standard.

[0082] According to one embodiment, as the electronic device (101) supports the Qi 2.0 standard, it may incorporate a first magnet assembly (1610) (e.g., a first magnet assembly (310)) as in FIG. 16 and support wireless charging using the magnetic force between the second magnet assembly (320) and the first magnet assembly (1610).

[0083] According to one embodiment, the electronic device (101) supports the Qi 2.1 standard, so that wireless charging using the magnetic force between the second magnetic assembly (320) and the first magnetic assembly (310) is supported when a cover device (300) (e.g., a cover accessory) including the first magnetic assembly (310) is attached. The electronic device (101) may support a magnetic cover function according to MCPE (magnetic cover power enhancement) or MCPM (magnetic cover power magnet). For example, since the electronic device (101) supports the Qi 2.1 standard, wireless charging according to the MPP mode can be performed through the cover device (300) including the first magnetic assembly (310) without embedding the first magnetic assembly (e.g., the first magnetic assembly (1610) of FIG. 16). The electronic device (101) does not contain a first magnet assembly, but can perform wireless charging according to the MPP mode by attaching a cover device (300) that includes a first magnet assembly (310). In this case, the first magnet assembly (310) included in the cover device (300) can serve as an auxiliary means to align the Tx coil (330) of the power supply device (201) with the coil antenna (210) of the electronic device (101) by being combined with the second magnet assembly (320) of the power supply device (201).

[0084] In the illustrated example of FIG. 3, the first magnet assembly (310) is shown embedded in the cover device (300), but as in FIG. 16, the first magnet assembly (1610) may be embedded in the electronic device (101). As in FIG. 16, when the first magnet assembly (1610) is embedded in the electronic device (101), the cover device (300) containing the first magnet assembly (310) may not be an essential component for wireless charging in MPP mode.

[0085] Hereinafter, a first magnet assembly (310, 1610) according to various embodiments will be described in detail with reference to FIGS. 4, 5, 7, 8, 10a, 10b, 13, 14, and 15. The first magnet assembly (310) described with reference to FIGS. 4, 5, 7, 8, 10a, 10b, 13, 14, and 15 may be a first magnet assembly (310) included in a cover device (300) as shown in FIG. 3. The first magnet assembly (1610) described with reference to FIGS. 4, FIGS. 5, FIGS. 7, FIGS. 8, FIGS. 10a, FIGS. 10b, FIGS. 13, FIGS. 14, and FIGS. 15 may be the first magnet assembly (1610) included in the electronic device (101) as shown in FIG. 16.

[0086] FIG. 4 is a plan view illustrating a first magnet assembly (310, 1610) according to one embodiment. FIG. 5 is a cross-sectional view of a portion of the first magnet assembly (310, 1610) illustrated in FIG. 4. For example, FIG. 4 may be a drawing showing a first magnet assembly (310) embedded in a cover device (300) according to one embodiment or a first magnet assembly (1610) embedded in an electronic device (101) according to one embodiment. For example, FIG. 5 may be a drawing of a portion of the first magnet assembly (310, 1610) cut along the line AA' illustrated in FIG. 4.

[0087] Referring to FIGS. 4 and 5, a first magnet assembly (310, 1610) according to one embodiment may include a coil region (401) corresponding to a coil antenna (210) (e.g., the coil antenna (210) of FIG. 2), and a magnet region disposed outside the coil region (401).

[0088] According to one embodiment, the coil region (401) may be an area where the coil antenna (210) of the electronic device (101) is directly placed, or an area that overlaps with at least a part of the coil antenna (210). For example, the first magnet assembly (1610) may be embedded in the electronic device (101), in which case the coil region (401) may mean an area where the coil antenna (210) is directly placed. For example, the first magnet assembly (310) may be embedded in the cover device (300), in which case the coil region (401) may be an area that overlaps with at least a part of the coil antenna (210) of the electronic device (101). The coil region (401) may be an area where the magnet is not placed, or an area that is not magnetized.

[0089] According to one embodiment, the first magnet assembly (310, 1610) may include at least one first magnet (402). The at least one first magnet (402) may be combined in a circular shape when viewed from the rear (e.g., the rear (101B) of FIG. 17) of the electronic device (101). Thus, the first magnet assembly (310, 1610) composed of the combination of at least one first magnet (402) may be arranged in a circular shape. The first magnet (402) may include an inner portion (410), a void (430), and an outer portion (420).

[0090] According to one embodiment, the inner portion (410) is positioned to surround the coil region (401) and may be a region that generates magnetic flux in a first direction (e.g., -Z direction). For example, the N pole may be positioned on the upper side (-Z direction) and the S pole may be positioned on the lower side (Z direction). The inner portion (410) may have a first width (W1). For example, the inner portion (410) may have a first width (W1) as a region adjacent to the coil region (401). As described below, the inner portion (410) may be configured to be coupled with the inner portion (1010) of the second magnet assembly (320) of the power supply device (201).

[0091] According to one embodiment, the outer portion (420) is positioned to surround the outer edge of the inner portion (410) and may be an area that generates magnetic flux in a second direction (e.g., Z direction) opposite to the first direction. For example, the N pole may be positioned on the lower side (Z direction) and the S pole on the upper side (-Z direction). The outer portion (420) may have a second width (W2) that is smaller than the first width (W1). As described below, the outer portion (420) may be configured to be coupled with the outer portion (1020) of the second magnet assembly (320) of the power supply device (201). According to one embodiment, the outer portion (420) may be an area positioned further away from the coil antenna (210) than the inner portion (410). For example, the distance from the coil antenna (210) to the inner part (410) may be closer than the distance from the coil antenna (210) to the outer part (420).

[0092] According to one embodiment, the gap (430) is positioned between the inner part (410) and the outer part (420) and can be positioned further away from the coil antenna (210) than the inner part (410).

[0093] According to one embodiment, the first magnet (402) can reduce the effect of a magnetic field (e.g., magnetic field or B-field) generated from the first magnet assembly (310, 1610) on at least some parts of the electronic device (101) by making the width of the inner part (410) (i.e., first width (W1)) larger than the width of the outer part (420) (i.e., second width (W2)).

[0094] For example, the magnetic field of the first magnet assembly (310, 1610) can cause magnetic field interference to the coil antenna (210) of the electronic device (101). When magnetic flux is induced in the coil antenna (210), the shielding portion placed on one side of the coil antenna (210) may become saturated by the magnetic flux. If the shielding portion becomes saturated and the magnetic field shielding function of the shielding portion decreases, eddy currents may be generated in the electrical or metal parts of the electronic device (101) placed around the coil antenna (210), thereby reducing the efficiency of the coil antenna (210). The present invention can reduce magnetic field interference to the coil antenna (210) by making the width of the inner portion (410) (i.e., the first width (W1)) and the width of the outer portion (420) (i.e., the second width (W2)) different.

[0095] According to one embodiment, the first magnet (402) can increase the magnetic flux density around the inner part (410) (i.e., the first width (W1)) more than the magnetic flux density around the outer part (420) (i.e., the second width (W2)) by making the width of the inner part (410) larger than the magnetic flux density around the outer part (420). When the magnetic flux density around the inner part (410) is increased, the magnetic field generated around the inner part (410) stays within a specified distance from the inner part (410), and accordingly, the magnetic field generated around it can be reduced from heading toward the coil antenna (210).

[0096] For example, the magnetic field of the first magnet assembly (310, 1610) can cause a malfunction of the camera module (180) of the electronic device (101) (e.g., an error in the autofocus function). For example, if magnetic flux is induced in the camera module (180), an error in the autofocus function of the camera module (180) may occur. The present invention can reduce magnetic field interference to the camera module (180) by making the width of the inner part (410) (i.e., the first width (W1)) and the width of the outer part (420) (i.e., the second width (W2)) different.

[0097] According to one embodiment, at least a portion of the first magnet assembly (310, 1610) may be shielded by a shielding member (440). For example, the shielding member (440) may be disposed on the lower portion (e.g., in the Z direction) of the first magnet assembly (310, 1610). The shielding member (440) may serve to shield the magnetic field produced by the first magnet assembly (310, 1610). According to the illustrated example, the first magnet assembly (310, 1610) comprising an inner portion (410), an air gap (430), and an outer portion (420) may be disposed on the shielding member (440) (e.g., in the -Z direction). According to one embodiment, the material of the shielding member (440) may include SPCC (steel plate cold commercial), but the present invention is not limited thereto.

[0098] According to one embodiment, in the first magnet (402), a non-magnetized zone (430) may be disposed between the inner portion (410) and the outer portion (420). For example, the width of the zone (430) may differ from the first width (W1), which is the width of the inner portion (410), or the second width (W2), which is the width of the outer portion (420).

[0099] FIG. 6 is the result of testing the magnetic field of the first magnet assembly (310, 1610) according to the embodiment of FIG. 5. For example, FIG. 6 may be the result of measuring the magnetic field of the first magnet assembly (310, 1610) according to the embodiment of FIG. 5.

[0100] In FIG. 6, the horizontal axis may be the displacement of the magnetic field with respect to the center of the coil antenna (210).

[0101] In Fig. 6, the vertical axis may represent the magnetic field strength.

[0102] Graph 601 in FIG. 6 shows the magnetic field of the first magnet assembly (310, 1610) according to the comparative example, and the comparative example may be a magnet in which the width of the inner part (410) and the width of the outer part (420) are the same.

[0103] Graph 602 in FIG. 6 is a measurement of the magnetic field of the first magnet assembly (310, 1610) according to the embodiment of FIG. 5, wherein the width of the inner part (410) of the first magnet assembly (310, 1610) may be larger than the width of the outer part (420).

[0104] Comparing graph 601 and graph 602, it can be seen that the magnetic field of the first magnet assembly (310, 1610) according to the embodiment of FIG. 5 is reduced at a point spaced by a specified distance from the center of the coil (e.g., a point where the value on the horizontal axis is 0) (e.g., a point where the value on the horizontal axis is about 15 mm or about -15 mm). The point (e.g., a point where the value on the horizontal axis is about 15 mm or about -15 mm) is a part of the magnet adjacent to the coil antenna (210), and the reduction in the magnetic field at that point indicates that the interference of the magnetic field of the first magnet assembly (310, 1610) with the coil antenna (210) is reduced.

[0105] FIG. 7 is a drawing illustrating a first magnet assembly (310, 1610) and a shielding member (440) according to one embodiment. FIG. 8 is a cross-sectional view of a portion of the magnet and shielding member (440) shown in FIG. 7. For example, FIG. 8 may be a drawing of a portion of the first magnet assembly (310, 1610) cut along the line B-B' shown in FIG. 7.

[0106] The embodiments of FIGS. 7 and 8 may be similar to the embodiment of FIGS. 5 in at least some respects. Hereinafter, the embodiments of FIGS. 7 and 8 that differ from the embodiment of FIGS. 5 will be described. Features of components not described in FIGS. 7 and 8 will be replaced by the description of the embodiment of FIGS. 5.

[0107] In the embodiments of FIGS. 7 and 8, unlike the embodiment of FIG. 5, the shielding member (440) is arranged to surround three sides of the first magnet assembly (310, 1610). For example, if the three sides of the first magnet assembly (310, 1610), excluding the side facing the second magnet assembly (320), are shielded through the shielding member (440), the shielding effect can be further enhanced. For example, as shown in FIGS. 7 and 8, shielding the three sides of the first magnet assembly (310, 1610) can reduce the performance degradation of components of the electronic device (101) (e.g., coil antenna (210), camera module (180)) caused by the magnetic field of the first magnet assembly (310, 1610) while maintaining the magnetic force between the second magnet assembly (320) and the first magnet assembly (310, 1610) at an appropriate level.

[0108] Referring to FIGS. 7 and 8, a shielding member (440) is disposed around the first magnet assembly (310, 1610) and covers at least a portion of the first magnet assembly (310, 1610).

[0109] According to one embodiment, the shielding member (440) may be arranged to surround the first magnet (402) in a shape similar to the uppercase English letter "U" when viewed in cross-section.

[0110] According to one embodiment, the shielding member (440) may include a bottom portion (440a) positioned at the bottom (e.g., Z direction) of the first magnet (402), a first side portion (440b) extending vertically from one side of the bottom portion (440a) and facing at least a portion of the side of the inner portion (410), and a second side portion (440c) extending vertically from the other side of the bottom portion (440a) and facing at least a portion of the side of the outer portion (420). According to one embodiment, the bottom portion (440a) may be positioned between the battery of the electronic device (101) (e.g., the battery (189) of FIG. 1) and the first magnet (402).

[0111] For example, the first side portion (440b) of the shielding member (440) can cover the side of the inner portion (410) of the first magnet (402). For example, the second side portion (440c) of the shielding member (440) can cover the side of the outer portion (420) of the first magnet (402).

[0112] According to one embodiment, the first side portion (440b) can serve to reduce interference of the inner portion (410) with respect to the coil area (401) by shielding a portion of the magnetic flux generated from the inner portion (410) of the first magnet (402).

[0113] According to one embodiment, the second side portion (440c) can serve to reduce interference of the outer portion (420) to a designated part of the electronic device (101) (e.g., camera module (180)) by shielding a portion of the magnetic flux generated from the outer portion (420) of the first magnet (402).

[0114] According to one embodiment, the thickness and width of the shielding member (440) may be constant. For example, the width (S1) of the first side portion (440b), the width (S1) of the second side portion (440c), and the thickness (S2) of the bottom portion (440a) may be the same as the first size.

[0115] FIG. 9 is the result of testing the magnetic field of the first magnet assembly (310, 1610) according to the embodiment of FIG. 8. For example, FIG. 9 may be the result of measuring the magnetic field of the first magnet assembly (310, 1610) according to the embodiment of FIG. 8.

[0116] In FIG. 9, the horizontal axis may be the displacement of the magnetic field with respect to the center of the coil antenna (210).

[0117] In Fig. 9, the vertical axis may represent the strength of the magnetic field.

[0118] Graph 901 in FIG. 9 is a measurement of the magnetic field of the first magnet assembly (310, 1610) according to the embodiment of FIG. 5, and may be an experimental result for an embodiment in which the shielding member (440) is placed only at the bottom of the first magnet assembly (310, 1610).

[0119] In FIG. 9, graph 902 measures the magnetic field of the first magnet assembly (310, 1610) according to the embodiment of FIG. 8, and the first magnet assembly (310, 1610) may be positioned so that a shielding member (440) is placed not only on its lower side but also wraps around at least a portion of its side.

[0120] Comparing graph 901 and graph 902, it can be seen that the magnetic field of the first magnet assembly (310, 1610) according to the embodiment of FIG. 8 is further reduced at a point spaced by a specified distance from the center of the coil (e.g., a point where the value on the horizontal axis is 0) (e.g., a point where the value on the horizontal axis is about 15 mm or about -15 mm). Since the point (e.g., a point where the value on the horizontal axis is about 15 mm or about -15 mm) is a part of the magnet adjacent to the coil antenna (210), the reduction in the magnetic field at that point indicates that the interference of the magnetic field of the first magnet assembly (310, 1610) with the coil antenna (210) has been reduced.

[0121] FIGS. 10a and FIGS. 10b are drawings illustrating a state in which a first magnet assembly (310, 1610) and a second magnet assembly (320) of a power supply device (201) are aligned according to one embodiment.

[0122] FIGS. 10a and 10b may show cross-sections of the second magnet assembly (320) and the first magnet assembly (310, 1610) when the electronic device (101) and the power supply device (201) are aligned by magnetic force between the second magnet assembly (320) and the first magnet assembly (310, 1610). For example, FIGS. 10a and 10b show cross-sections of a portion of the second magnet assembly (320) along the CC' line shown in FIG. 3 and cross-sections of a portion of the first magnet assembly (310, 1610) along the BB' line shown in FIG. 7.

[0123] The embodiments of FIGS. 10a and 10b may be similar to the embodiment of FIG. 8 in at least some respects. Hereinafter, the embodiments of FIGS. 10a and 10b that differ from the embodiment of FIG. 8 will be described. Features of components not described in FIGS. 10a and 10b will be replaced by the description of the embodiment of FIG. 8.

[0124] Referring to FIG. 10a and FIG. 10b, a shielding member (440) according to one embodiment may include a bottom portion (440a) disposed at the bottom (e.g., Z direction) of a first magnet (402), a first side portion (440b) extending vertically from one side of the bottom portion (440a) and facing (or covering) at least a portion of the side of an inner portion (410), and a second side portion (440c) extending vertically from the other side of the bottom portion (440a) and facing (or covering) at least a portion of the side of an outer portion (420). For example, the first side portion (440b) of the shielding member (440) may cover a portion of the side of the inner portion (410) of the first magnet (402). For example, the second side portion (440c) of the shielding member (440) can cover a portion of the side of the outer portion (420) of the first magnet (402).

[0125] According to one embodiment, the second magnet assembly (320) may include an inner portion (1010) having a third width (W1_Tx) configured to overlap at least a portion of the inner portion (410) of the first magnet (402), an outer portion (1020) having a third width (W2_Tx, e.g., W2_Tx is the same as W1_Tx) configured to overlap at least a portion of the outer portion (420) of the first magnet (402), and a gap (1030) disposed between the inner portion (1010) and the outer portion (1020). According to one embodiment, the third width (W1_Tx) may be smaller than the first width (W1). According to one embodiment, the third width (W1_Tx) may be greater than or equal to the second width (W2). The width (W3_Tx) of the gap (1030) of the second magnet assembly (320) may be different from the width (W3) of the gap (430) of the first magnet (402).

[0126] According to one embodiment, when the electronic device (101) and the power supply device (201) are aligned by magnetic force between the second magnet assembly (320) and the first magnet assembly (310, 1610), the gap (1030) may be positioned to overlap with at least a portion of the gap (430) and a portion of the inner part (410) of the first magnet (402).

[0127] According to one embodiment, when the electronic device (101) and the power supply device (201) are aligned by magnetic force between the second magnet assembly (320) and the first magnet assembly (310, 1610), the outer surface (1001) of the first side portion (440b) and the outer surface (1002) of the inner portion (1010) may be arranged to form a straight line. For example, when the electronic device (101) and the power supply device (201) are aligned by magnetic force between the second magnet assembly (320) and the first magnet assembly (310, 1610), the inner portion (1010) of the second magnet assembly (320) may not overlap with the coil area (401). When the electronic device (101) and the power supply device (201) are aligned by magnetic force between the second magnet assembly (320) and the first magnet assembly (310, 1610), the inner part (1010) of the second magnet assembly (320) overlaps with a first side part (440b) covering a part of the inner part (410) of the first magnet assembly (310, 1610) and a part of the first magnet assembly (310, 1610), and may not overlap with the coil area (401) (or coil antenna (210)).

[0128] According to one embodiment, the first side portion (440b) of the shielding member (440) overlaps with the inner portion (1010) of the second magnet assembly (320), so that the first side portion (440b) of the shielding member (440) can shield the magnetic field produced by the second magnet assembly (320).

[0129] According to one embodiment, when the first magnet assembly (310, 1610) is attached to the second magnet assembly (320), the first magnet assembly (310, 1610) and the second magnet assembly (320) may be concentric with respect to each other. According to one embodiment, the distance between the first side portion (440b) of the shielding member (440) and the center (CT) of the first magnet assembly (310, 1610) may correspond to the distance between the center (CT) of the second magnet assembly (320) and the inner portion (1010) of the second magnet assembly (320). For example, in FIG. 10a, CL may be an imaginary line (CL) that vertically penetrates the center (e.g., CT in FIG. 7) of the first magnet assembly (310, 1610) or the second magnet assembly (320), which are concentric. In FIG. 10a, P1 and P2 may be points on a virtual line (CL) that vertically penetrates the center (e.g., CT in FIG. 7) of a first magnet assembly (310, 1610) or a second magnet assembly (320), which is a concentric circle. For example, the distance from the virtual line (CL) passing through the center (e.g., CT in FIG. 7) of the first magnet assembly (310, 1610) or the second magnet assembly (320) to the first side portion (440b) of the shielding member (440) may be equal to the distance from the virtual line (CL) to the inner portion (1010) of the second magnet assembly (320).

[0130] According to one embodiment, in order to maintain an appropriate magnetic force between the second magnet assembly (320) and the first magnet assembly (310, 1610), it is preferable to design the width of the inner portion (410) of the first magnet assembly (310, 1610) to correspond to the width of the inner portion (1010) of the second magnet assembly (320). If a shielding member (440) is placed around the first magnet assembly (310, 1610), as in the embodiment of FIG. 10a and FIG. 10b, the thickness or width of the shielding member (440) may be additionally considered when designing the width of the inner portion (410). For example, it may be preferable to design the width of the inner portion (410) to be relatively reduced by the first side portion (440b) of the shielding member (440) covering the side of the inner portion (410). According to one embodiment, the size of the reduction in the width of the inner portion (410) can be reduced by the width of the first side portion (440b) of the shielding member (440). For example, when the first side portion (440b) of the shielding member (440) is positioned to face the inner portion (410), the width of the inner portion (410) can be reduced by the width of the first side portion (440b). Even if the first side portion (440b) of the shielding member (440) is positioned to face the inner portion (410), the present invention can reduce magnetic field interference caused by the first magnet assembly (310, 1610) by ensuring that the inner portion (410) of the first magnet assembly (310, 1610) does not overlap with a part of the coil antenna (210).

[0131] In FIG. 10a and FIG. 10b, when the first magnet assembly (310, 1610) and the second magnet assembly (320) are combined, the magnetic flux (MF) can be formed in the order of the inner part (410) of the first magnet (402), the inner part (1010) of the second magnet assembly (320), the shielding part (450) coupled to the second magnet assembly (320), the outer part (1020) of the second magnet assembly (320), the outer part (420) of the first magnet (402), and the shielding member (440) coupled to the first magnet (402). According to one embodiment, the first magnet (402) can make the width of the inner part (410) (i.e., the first width (W1)) larger than the width of the outer part (420) (i.e., the second width (W2)), thereby making the density of magnetic flux (MF) around the inner part (410) larger than the density of magnetic flux (MF) in the outer part (420). When the density of magnetic flux (MF) around the inner part (410) increases, the magnetic field generated around the inner part (410) stays within a specified distance from the inner part (410), and accordingly, the magnetic field generated around it can be reduced from heading toward the coil antenna (210).

[0132] According to one embodiment, as shown in FIG. 10a, the total width (W_Rx) of the shielding member (440) and the first magnet (402) combined may be substantially the same as the total width (W_Tx) of the second magnet assembly (320) including the inner portion (1010), the air gap (1030), and the outer portion (1020). For example, when the electronic device (101) and the power supply device (201) are aligned by magnetic force between the second magnet assembly (320) and the first magnet assembly (310, 1610), the outer surface (1001) of the first side part (440b) and the outer surface (1002) of the inner part (1010) are arranged to form a straight line, and the total width (W_Rx) of the first magnet assembly (310, 1610) including the shielding member (440) and the total width (W_Tx) of the second magnet assembly (320) may be the same.

[0133] According to one embodiment, as shown in FIG. 10b, the total width (W_Rx) of the shielding member (440) and the first magnet (402) combined may be larger than the total width (W_Tx) of the second magnet assembly (320) including the inner part (1010), the air gap (1030), and the outer part (1020). For example, when the electronic device (101) and the power supply device (201) are aligned by magnetic force between the second magnet assembly (320) and the first magnet assembly (310, 1610), the outer surface (1001) of the first side part (440b) and the outer surface (1002) of the inner part (1010) are arranged to form a straight line, but the total width (W_Rx) of the first magnet assembly (310, 1610) including the shielding member (440) may be larger than the total width (W_Tx) of the second magnet assembly (320) due to the second side part (440c) covering the outer part (420). In this case, the outer surface of the outer part (1020) of the second magnet assembly (320) and the outer surface of the outer part (420) of the first magnet assembly (310, 1610) can be arranged to form a straight line.

[0134] According to one embodiment, the distance between the first side portion (440b) of the shielding member (440) and the center (CT) of the first magnet assembly (310, 1610) may be approximately 46 mm according to the Qi2 standard, but the present invention is not limited thereto.

[0135] FIG. 11 is the result of testing the AC resistance of a coil when the first magnet assembly (310, 1610) and the second magnet assembly (320) of the power supply device (201) are aligned according to one embodiment. For example, FIG. 11 is the result of testing the resistance of the coil antenna (210) and the resistance of the coil (330) affected by the magnetic field of the first magnet assembly (310, 1610) when the width of the inner part (410) is reduced according to the embodiments of FIG. 10a and FIG. 10b. For example, the more interference or influence caused by the magnetic field of the first magnet assembly (310, 1610) is received, the more the AC resistance of the coil antenna (210) and the AC resistance of the coil (330) may increase, and the charging efficiency may decrease. Therefore, the AC resistance of the coil antenna (210) and the AC resistance of the coil (330) may be indicators that can indirectly confirm that the interference or influence caused by the first magnet assembly (310, 1610) has been reduced.

[0136] In FIG. 11, the horizontal axis may represent the resistance of the coil (330) of the power supply device (201) when the electronic device (101) and the power supply device (201) are aligned by the magnetic force between the second magnet assembly (320) and the first magnet assembly (310, 1610).

[0137] In FIG. 11, the vertical axis may represent the resistance of the coil antenna (210) of the electronic device (101) when the electronic device (101) and the power supply device (201) are aligned by the magnetic force between the second magnet assembly (320) and the first magnet assembly (310, 1610).

[0138] In FIG. 11, 1101 represents the AC resistance of the coil antenna (210) and the AC resistance of the coil (330) according to a comparative example in which the width of the inner part (410) is not reduced when the first side part (440b) of the shielding member (440) is designed to cover the side of the inner part (410). In the comparative example, it can be seen that the AC resistance of the coil antenna (210) is greater than about 1.6 and the AC resistance of the coil (330) is greater than about 0.8.

[0139] In FIG. 11, 1102 represents the AC resistance of the coil antenna (210) and the AC resistance of the coil (330) according to an embodiment of the present invention in which the width of the inner part (410) is reduced when the first side part (440b) of the shielding member (440) is designed to cover the side of the inner part (410), for example, the embodiment of FIG. 10a and FIG. 10b. In the embodiment of FIG. 10a and FIG. 10b, it can be seen that the AC resistance of the coil antenna (210) is less than about 1.6 and the AC resistance of the coil (330) is less than about 0.8. Therefore, in the embodiment of FIG. 10a and FIG. 10b, it can be seen that the AC resistance of the coil antenna (210) and the AC resistance of the coil (330) have been reduced compared to the comparative example, and that the interference or influence caused by the first magnet assembly (310, 1610) has been reduced.

[0140] FIG. 12 is the result of testing the magnetic field of the first magnet assembly (310, 1610) according to the embodiments of FIG. 10a and 10b. For example, FIG. 12 may be the result of measuring the magnetic field of the first magnet assembly (310, 1610) according to the embodiments of FIG. 10a and 10b.

[0141] In FIG. 12, the horizontal axis may be the displacement of the magnetic field with respect to the center of the coil antenna (210).

[0142] In Fig. 12, the vertical axis may represent the magnetic field strength.

[0143] Graph 1201 in FIG. 12 is a measurement of the magnetic field of the first magnet assembly (310, 1610) according to the embodiment of FIG. 8, and may be an experimental result in a case where the shielding member (440) wraps around the side of the inner part (410) and the first width (W1) of the inner part (410) is not designed to be reduced.

[0144] Graph 1202 in FIG. 12 is a measurement of the magnetic field of the first magnet assembly (310, 1610) according to the embodiment of FIG. 10a and FIG. 10b, and may be an experimental result in the case where the shielding member (440) wraps around the side of the inner part (410) and the first width (W1) of the inner part (410) is reduced.

[0145] Comparing graph 1201 and graph 1202, it can be seen that the magnetic field of the first magnet assembly (310, 1610) according to the embodiment of FIG. 10a and FIG. 10b is further reduced at a point spaced by a specified distance from the center of the coil (e.g., a point where the value on the horizontal axis is 0) (e.g., a point where the value on the horizontal axis is about 15 mm or about -15 mm). Since the point (e.g., a point where the value on the horizontal axis is about 15 mm or about -15 mm) is a part of the magnet adjacent to the coil antenna (210), the reduction in the magnetic field at that point indicates that the interference of the magnetic field of the first magnet assembly (310, 1610) with the coil antenna (210) is reduced.

[0146] FIG. 13 is a drawing illustrating a first magnet assembly (310, 1610) and a shielding member (440) according to one embodiment.

[0147] The embodiment of FIG. 13 may be similar to the embodiment of FIG. 8 in at least some respects. Hereinafter, the embodiment of FIG. 13 that differs from the embodiment of FIG. 8 will be described. Features of components not described in FIG. 13 will be replaced by the description of the embodiment of FIG. 8.

[0148] In the embodiment of FIG. 13, unlike the embodiment of FIG. 8, the width of the shielding member (440) can be designed to be different in each section.

[0149] Referring to FIG. 13, a shielding member (440) according to one embodiment may include a bottom portion (440a) disposed at the bottom (e.g., Z direction) of a first magnet assembly (310, 1610), a first side portion (440b) extending vertically from one side of the bottom portion (440a) and facing at least a portion of the side of the inner portion (410), and a second side portion (440c) extending vertically from the other side of the bottom portion (440a) and facing at least a portion of the side of the outer portion (420). For example, the first side portion (440b) of the shielding member (440) may cover the side of the inner portion (410) of the first magnet assembly (310, 1610). For example, the second side portion (440c) of the shielding member (440) can cover the side of the outer portion (420) of the first magnet assembly (310, 1610).

[0150] According to one embodiment, the bottom portion (440a) of the shielding member (440) may have a thickness (S2) of a first size. Each of the first side portion (440b) and the second side portion (440c) of the shielding member (440) may have a width (S1) of a second size that is smaller than the first size.

[0151] FIG. 14 is a drawing illustrating a first magnet assembly (310, 1610) and a shielding member (440) according to one embodiment.

[0152] The embodiment of FIG. 14 may be similar in at least part to the embodiment of FIG. 10a and FIG. 10b. Hereinafter, the embodiment of FIG. 14 that differs from the embodiment of FIG. 10a and FIG. 10b will be described. Features of components not described in FIG. 14 will be replaced by the description of the embodiment of FIG. 10a and FIG. 10b.

[0153] Unlike the embodiments of FIG. 10a and FIG. 10b, the shielding member (440) may not include a second side portion (440c). For example, the shielding member (440) may be positioned to wrap around the first magnet assembly (310, 1610) in a shape similar to the uppercase English letter "L" when viewed in cross-section.

[0154] Referring to FIG. 14, a shielding member (440) according to one embodiment may include a bottom portion (440a) disposed at the bottom (e.g., Z direction) of a first magnet assembly (310, 1610), and a first side portion (440b) extending vertically from one side of the bottom portion (440a) and facing at least a portion of the side of the inner portion (410).

[0155] According to one embodiment, when the electronic device (101) and the power supply device (201) are aligned by magnetic force between the second magnet assembly (320) and the first magnet assembly (310, 1610), the outer surface (1001) of the first side portion (440b) and the outer surface (1002) of the inner portion (1010) may be arranged to form a straight line. For example, when the electronic device (101) and the power supply device (201) are aligned by magnetic force between the second magnet assembly (320) and the first magnet assembly (310, 1610), the inner portion (1010) of the second magnet assembly (320) may not overlap with the coil area (401). When the electronic device (101) and the power supply device (201) are aligned by magnetic force between the second magnet assembly (320) and the first magnet assembly (310, 1610), the inner part (1010) of the second magnet assembly (320) overlaps with a first side part (440b) covering a part of the inner part (410) of the first magnet assembly (310, 1610) and a part of the first magnet assembly (310, 1610), and may not overlap with the coil area (401) (or coil antenna (210)).

[0156] According to one embodiment, the total width (W_Rx(W1 + W2 + W3 + S1)) of the first side portion (440b) of the shielding member (440) and the total width of the first magnet (402) may be substantially the same as the total width (W_Tx(W1_Tx + W2_Tx + W3_Tx)) of the second magnet assembly (320) including the inner portion (1010), the air gap (1030), and the outer portion (1020). For example, when the electronic device (101) and the power supply device (201) are aligned by magnetic force between the second magnet assembly (320) and the first magnet assembly (310, 1610), the outer surface (1001) of the first side part (440b) and the outer surface (1002) of the inner part (1010) are arranged to form a straight line, and the total width (W_Rx) of the shielding member (440) and the first magnet (402) combined and the total width (W_Tx) of the second magnet assembly (320) may be the same.

[0157] Although not shown, the total width (W_Rx) of the first magnet assembly (310, 1610) including the shielding member (440) may be larger than the total width (W_Tx) of the second magnet assembly (320) including the inner part (1010), the gap (1030), and the outer part (1020). For example, when the electronic device (101) and the power supply device (201) are aligned by magnetic force between the second magnet assembly (320) and the first magnet assembly (310, 1610), the outer surface (1001) of the first side part (440b) and the outer surface (1002) of the inner part (1010) are arranged to form a straight line, but the outer surface of the outer part (420) of the first magnet assembly (310, 1610) from the outer surface of the outer part (1020) of the second magnet assembly (320) may not form a straight line. For example, the outer part (420) of the first magnet assembly (310, 1610) may be designed to protrude further in the outward direction (e.g., left direction in FIG. 14) of the outer part (1020) of the second magnet assembly (320).

[0158] FIG. 15 is a conceptual diagram illustrating the cross-sectional structure of a first magnet assembly (310, 1610) by region according to one embodiment.

[0159] Referring to FIG. 15, a first magnet assembly (310, 1610) according to one embodiment may have different cross-sectional structures depending on the relative position with respect to a part of the electronic device (101). For example, the first magnet assembly (310, 1610) may include at least one first part (1510) having a cross-sectional structure of a first shape, and at least one second part (1520) having a cross-sectional structure of a second shape.

[0160] According to one embodiment, the first magnet assembly (310, 1610) may have a first cross-sectional structure in the vicinity of a component in the electronic device (101) where significant performance degradation is likely to occur due to the influence of the magnetic field of the first magnet assembly (310, 1610). For example, the first magnet assembly (310, 1610) may have a first cross-sectional structure in at least one first part (1510) adjacent to the camera module (180) of the electronic device (101).

[0161] According to one embodiment, a component in an electronic device (101) that is likely to experience significant performance degradation due to the influence of the magnetic field of the first magnet assembly (310, 1610) may include, for example, a camera module (180), a stylus pen, or an MST antenna of the electronic device (101), but the present invention is not limited thereto.

[0162] According to one embodiment, the first part (1510) of the first magnet assembly (310, 1610) having a first cross-sectional structure includes a structure in which the magnetic field is shielded better than the second part (1520) of the first magnet assembly (310, 1610) having a second cross-sectional structure, thereby reducing the influence or interference on a designated part of the battery device.

[0163] According to one embodiment, the first part (1510) of the first magnet assembly (310, 1610) having a first cross-sectional structure may have a cross-sectional structure according to the embodiments of FIG. 8, FIG. 10a, and FIG. 10b. For example, the first magnet assembly (310, 1610) is covered on three sides by a shielding member (440), and the shielding member (440) may be arranged to wrap around the first magnet assembly (310, 1610) in a shape similar to the uppercase English letter "U".

[0164] According to one embodiment, the second part (1520) of the first magnet assembly (310, 1610) having a second cross-sectional structure may have a cross-sectional structure according to the embodiment of FIG. 14. For example, two sides of the second part (1520) of the first magnet assembly (310, 1610) are covered by a shielding member (440), and the shielding member (440) may be arranged to wrap around the first magnet assembly (310, 1610) in a shape similar to the uppercase English letter "L".

[0165] FIG. 16 is a drawing illustrating the arrangement of a first magnet assembly (310, 1610) of an electronic device (101) according to one embodiment.

[0166] Referring to FIG. 16, an electronic device (101) according to one embodiment may include a coil antenna (210) and a first magnet assembly (1610) (e.g., the first magnet assembly (310) of FIG. 3) arranged to surround the coil antenna (210).

[0167] According to one embodiment, a first magnet assembly (1610) included in an electronic device (101) may have different cross-sectional structures depending on the relative position with respect to a part of the electronic device (101), as described with reference to FIG. 15. For example, the first magnet assembly (1610) may include at least one first part (1510) having a cross-sectional structure of a first shape, and at least one second part (1520) having a cross-sectional structure of a second shape.

[0168] According to one embodiment, the first part (1510) of the first magnet assembly (1610) having a first cross-sectional structure may have a cross-sectional structure according to the embodiments of FIG. 8, FIG. 10a, and FIG. 10b. For example, the first part (1510) of the first magnet assembly (1610) is covered on three sides by a shielding member (440), and the shielding member (440) may be arranged to wrap around the first magnet assembly (1610) in a shape similar to the uppercase English letter "U".

[0169] According to one embodiment, the second part (1520) of the first magnet assembly (1610) having a second cross-sectional structure may have a cross-sectional structure according to the embodiment of FIG. 14. For example, the second part (1520) of the first magnet assembly (1610) has two sides covered by a shielding member (440), and the shielding member (440) may be arranged to wrap around the first magnet assembly (1610) in a shape similar to the uppercase English letter "L".

[0170] According to one embodiment, a component in an electronic device (101) that is likely to experience significant performance degradation due to the influence of the magnetic field of the first magnet assembly (1610) may include, for example, a camera module (180) of the electronic device (101), a stylus pen, or an MST antenna, but the present invention is not limited thereto.

[0171] According to one embodiment, since the magnetic field or B-field generated by the DC magnet is predictable, at least a portion of the shielding member (440) can be formed as an electromagnet.

[0172] FIG. 17 is a drawing showing a state in which a power supply device (201) is attached to an electronic device (101) according to one embodiment.

[0173] According to one embodiment, as illustrated in FIG. 16, when the first magnet assembly (1610) is embedded in the electronic device (101), the electronic device (101) can perform a designated wireless charging, e.g., MPP charging, by aligning the coil antenna (210) and the coil (330) using the magnetic force between the second magnet assembly (320) and the first magnet assembly (1610) without attaching a cover device (300) (e.g., a cover accessory) containing a magnet. For example, a power supply unit (201) can be directly attached to and aligned with the electronic device (101) by the magnetic force between the second magnet assembly (320) and the first magnet assembly (1610).

[0174] FIG. 18 is a flowchart illustrating the operation of a wireless charging system according to one embodiment.

[0175] Referring to FIG. 18, a wireless charging system according to one embodiment may include a power supply unit (201) (e.g., the electronic device (102) of FIG. 1) and an electronic device (101) (e.g., the electronic device (101) of FIG. 1). The power supply unit (201) and the electronic device (101) of the wireless charging system according to one embodiment may support the Qi 2.0 standard or the Qi 2.1 standard, and may support high-speed wireless charging of about 15W or more using magnets by supporting, for example, MPP.

[0176] In operation 1810, the power supply (201) can set the operating frequency to approximately 128 KHz. The power supply (201) can output a digital ping to wake up the electronic device (101). For example, the power supply (201) can output a digital ping having a frequency in the approximately 128 KHz band. The digital ping may include a first ping and a second ping. The power supply (201) can output the first ping and the second ping sequentially. The output power of the first ping may be smaller than the output power of the second ping. The power supply (201) can adjust the output power by adjusting the duty cycle and voltage of the digital ping.

[0177] In operation 1820, the power supply unit (201) can receive a signal strength packet (SSP) signal as a response from the electronic device (101) to a digital ping.

[0178] In operation 1830, the power supply unit (201) may receive an identification (ID) signal containing identification information from the electronic device (101). The identification information may include version information, a manufacturing code, or a device identifier.

[0179] In operation 1840, the power supply unit (201) may receive an XID (extended identification data packet) signal from the electronic device (101) if the electronic device (101) is an MPP-supporting device. According to one embodiment, the power supply unit (201) may determine that the electronic device (101) is a device that supports MPP charging based on receiving the XID signal. For example, the electronic device (101) transmits a response signal to the power supply unit (201), wherein the response signal (e.g., XID signal) may be a signal indicating that the electronic device (101) supports a specified wireless charging (e.g., MPP) by aligning the coil (330) of the power supply unit (201) to a coil antenna using the magnetic force between the second magnet assembly (320) of the power supply unit (201) and the first magnet assembly (310, 1610) that overlaps at least partially with the second magnet assembly (320).

[0180] In operation 1850, the power supply unit (201) may receive a configuration signal from the electronic device (101) that includes configuration information related to wireless charging. The configuration information may include a wireless charging frequency, a maximum receivable power, or power that the electronic device (101) requires from the power supply unit (201) for battery charging.

[0181] In operation 1860, the power supply unit (201) can output an MPP pattern signal for MPP charging in response to an XID signal received from the electronic device (101). For example, the power supply unit (201) can transmit the MPP pattern signal for MPP charging to the electronic device (101) using a frequency shift keying (FSK) method that modulates the frequency of the power signal. For example, the power supply unit (201) can transmit the MPP pattern signal for MPP charging to the electronic device (101) using an amplitude shift keying (ASK) method that modulates the amplitude of the power signal.

[0182] In operation 1870, the power supply unit (201) can perform MPP negotiation for MPP charging with the electronic device (101). The MPP negotiation between the power supply unit (201) and the electronic device (101) may include negotiation, correction, or renegotiation steps.

[0183] When the power supply unit (201) completes the MPP negotiation (i.e., negotiation communication) of the electronic device (101), it can wirelessly transmit power of about 15W or more.

[0184] An electronic device according to one embodiment of the present disclosure (e.g., the electronic device (101) of FIG. 1) comprises a coil antenna for wireless charging (e.g., the coil antenna (210) of FIG. 2), a battery configured to be charged by power received through the coil antenna (210), and a first magnet assembly (e.g., the first magnet assembly (310, 1610) of FIG. 4) disposed adjacent to the coil antenna (210) and detachably attached to a second magnet assembly (e.g., the second magnet assembly (320) of FIG. 3) of the power supply for wireless charging, and comprising a first magnet (e.g., the first magnet assembly (402) of FIG. 4), wherein the first magnet (402) comprises an inner portion having a first width (e.g., the inner portion (410) of FIG. 4), an outer portion disposed further from the coil antenna (210) than the inner portion (410) and having a second width smaller than the first width (e.g., FIG. 4 It may include an outer part (420), and an air gap (e.g., the air gap (430) of FIG. 4) disposed between the inner part (410) and the outer part (420) and disposed further from the coil antenna (210) than the inner part (410).

[0185] The electronic device (101) further includes a housing comprising a front, a rear, and a side surrounding the space between the front and the rear, and the first magnet assembly (310, 1610) may be placed inside the housing of the electronic device (101).

[0186] The electronic device (101) further includes a cover accessory (e.g., the cover device (300) of FIG. 3) that is detachably coupled to the electronic device (101), and the first magnet assembly (310, 1610) may be placed inside the cover accessory.

[0187] The first magnet assembly (310, 1610) may be arranged to surround the coil antenna (210).

[0188] The electronic device (101) further comprises a shielding member (e.g., shielding member (440) of FIG. 8) arranged to at least partially surround the first magnet (402), and the shielding member (440) may include a bottom portion (e.g., bottom portion (440a) of FIG. 8) disposed between the battery of the electronic device (101) and the first magnet (402), and a first side portion (e.g., first side portion (440b) of FIG. 8) extending from one side of the bottom portion (440a) and covering a portion of the side of the inner portion (410).

[0189] When the first magnet assembly (310, 1610) is attached to the second magnet assembly (320), the first magnet assembly (310, 1610) and the second magnet assembly (320) are concentric with respect to each other, and the distance between the first side portion (440b) of the shielding member (440) and the center of the first magnet assembly (310, 1610) may correspond to the distance between the center of the second magnet assembly (320) and the inner portion (1010) of the second magnet assembly (320).

[0190] The distance between the first side portion (440b) of the shielding member (440) and the center of the first magnet assembly (310, 1610) may be 46 mm.

[0191] The shielding member (440) may include a second side portion that extends from the other side of the bottom portion (440a) and covers a portion of the side of the outer portion (420).

[0192] The bottom portion (440a) has a thickness of a first size, and the first side portion (440b) and the second side portion may have a width of a second size smaller than the first size.

[0193] The distance between the outer surface of the second side portion of the shielding member (440) and the center of the first magnet assembly (310, 1610) may be greater than the distance between the center of the second magnet assembly (320) and the outer surface of the outer portion (1020) of the second magnet assembly (320).

[0194] An electronic device (101) according to one embodiment of the present disclosure comprises a coil antenna (210) for wireless charging, a battery configured to be charged by power received through the coil antenna (210), and a first magnet assembly (310, 1610) comprising a first magnet (402) disposed adjacent to the coil antenna (210) and detachably attached to a second magnet assembly (320) of a power supply for wireless charging, wherein the first magnet (402) comprises an inner portion (410), an outer portion (420) disposed further from the coil antenna (210) than the inner portion (410), and a gap (430) disposed between the inner portion (410) and the outer portion (420) and disposed further from the coil antenna (210) than the inner portion (410), and the first magnet assembly (310, 1610) comprising at least partially It includes a shielding member (440) arranged to surround, wherein the shielding member (440) includes a bottom portion (440a) disposed between the battery of the electronic device (101) and the first magnet (402), and a first side portion (440b) extending from one side of the bottom portion (440a) and covering a portion of the side of the inner portion (410), and when the first magnet assembly (310, 1610) is attached to the second magnet assembly (320), the first magnet assembly (310, 1610) and the second magnet assembly (320) are concentric with respect to each other, and the distance between the first side portion (440b) of the shielding member (440) and the center of the first magnet assembly (310, 1610) is such that the center of the second magnet assembly (320) and the second magnet It can correspond to the distance between the inner parts (1010) of the assembly (320).

[0195] The electronic device (101) further includes a housing comprising a front, a rear, and a side surrounding the space between the front and the rear, and the first magnet assembly (310, 1610) may be placed inside the housing of the electronic device (101).

[0196] The electronic device (101) further includes a cover accessory that is detachably coupled to the electronic device (101), and the first magnet assembly (310, 1610) may be placed inside the cover accessory.

[0197] The inner part (410) has a first width, and the outer part (420) may have a second width smaller than the first width.

[0198] The first magnet assembly (310, 1610) may be arranged to surround the coil antenna (210).

[0199] The distance between the first side portion (440b) of the shielding member (440) and the center of the first magnet assembly (310, 1610) may be 46 mm.

[0200] The shielding member (440) may include a second side portion that extends from the other side of the bottom portion (440a) and covers a portion of the side of the outer portion (420).

[0201] The bottom portion (440a) has a thickness of a first size, and the first side portion (440b) and the second side portion may have a width of a second size smaller than the first size.

[0202] The distance between the outer surface of the second side portion of the shielding member (440) and the center of the first magnet assembly (310, 1610) may be greater than the distance between the center of the second magnet assembly (320) and the outer surface of the outer portion (1020) of the second magnet assembly (320).

[0203] The second side portion of the shielding member (440) is positioned adjacent to a designated part of the electronic device (101) within a designated distance, and the designated part may include a camera module of the electronic device (101) (e.g., camera module (180) of FIG. 16).

[0204] The embodiments of the present disclosure can reduce the degradation of the performance of electronic device components by the magnetic field of a magnet (e.g., magnetic field or B-field).

Claims

1. In an electronic device, Coil antenna for wireless charging; A battery configured to be charged by power received through the above-mentioned coil antenna; and A first magnet assembly comprising a first magnet, which is disposed adjacent to the coil antenna and detachably attached to a second magnet assembly of a power supply for wireless charging, and comprises a first magnet. The first magnet mentioned above is, An inner part having a first width; An outer portion positioned further from the coil antenna than the inner portion and having a second width smaller than the first width; and A gap disposed between the inner part and the outer part, and disposed further from the coil antenna than the inner part, comprising Electronic device.

2. In Paragraph 1, The above electronic device is, The housing further includes a front, a rear, and a side surrounding the space between the front and the rear, and The first magnet assembly is disposed inside the housing of the electronic device, Electronic device.

3. In Paragraph 1, The electronic device further includes a cover accessory that is detachably coupled to the electronic device, and The first magnet assembly is disposed inside the cover accessory, Electronic device.

4. In Paragraph 1, The first magnet assembly is positioned to surround the periphery of the coil antenna. Electronic device.

5. In Paragraph 1, The above electronic device It further includes a shielding member arranged to at least partially surround the first magnet, and The above shielding member is, A bottom portion disposed between the battery of the electronic device and the first magnet; and A first side portion extending from one side of the bottom portion and covering a part of the side of the inner portion, Electronic device.

6. In Paragraph 5, When the first magnet assembly is attached to the second magnet assembly, the first magnet assembly and the second magnet assembly are concentric with respect to each other, and The distance between the first side portion of the shielding member and the center of the first magnet assembly corresponds to the distance between the center of the second magnet assembly and the inner portion of the second magnet assembly. Electronic device.

7. In Paragraph 6, The distance between the first side portion of the shielding member and the center of the first magnet assembly is 46 mm, Electronic device.

8. In Paragraph 6, The above shielding member is A second side portion extending from the other side of the bottom portion and covering a portion of the side of the outer portion, Electronic device.

9. In Paragraph 8, The above bottom portion has a thickness of a first size, and The first side portion and the second side portion have a width of a second size smaller than the first size, Electronic device.

10. In Paragraph 6, The distance between the outer surface of the second side portion of the shielding member and the center of the first magnet assembly is greater than the distance between the center of the second magnet assembly and the outer surface of the outer portion of the second magnet assembly. Electronic device.

11. In an electronic device, Coil antenna for wireless charging; A battery configured to be charged by power received through the above-mentioned coil antenna; and A first magnet assembly comprising a first magnet, disposed adjacent to the coil antenna and detachably attached to a second magnet assembly of a power supply for wireless charging, wherein The first magnet mentioned above is, medial part; An outer portion positioned further from the coil antenna than the inner portion; and The first magnet assembly comprising an air gap disposed between the inner part and the outer part and disposed further from the coil antenna than the inner part; and It includes a shielding member arranged to at least partially surround the first magnet, and The above shielding member is, A bottom portion disposed between the battery of the electronic device and the first magnet; and It includes a first side portion extending from one side of the bottom portion and covering a part of the side of the inner portion, When the first magnet assembly is attached to the second magnet assembly, the first magnet assembly and the second magnet assembly are concentric with respect to each other, and The distance between the first side portion of the shielding member and the center of the first magnet assembly corresponds to the distance between the center of the second magnet assembly and the inner portion of the second magnet assembly. Electronic device.

12. In Paragraph 11, The above electronic device is, The housing further includes a front, a rear, and a side surrounding the space between the front and the rear, and The first magnet assembly is disposed inside the housing of the electronic device, Electronic device.

13. In Paragraph 11, The electronic device further includes a cover accessory that is detachably coupled to the electronic device, and The first magnet assembly is disposed inside the cover accessory, Electronic device.

14. In Paragraph 11, The above inner portion has a first width, and The above outer portion has a second width smaller than the first width, Electronic device.

15. In Paragraph 11, The first magnet assembly is positioned to surround the periphery of the coil antenna. Electronic device.

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