CN117882248A

CN117882248A - Electronic device comprising coil antenna and magnet

Info

Publication number: CN117882248A
Application number: CN202280058189.2A
Authority: CN
Inventors: 林宰德; 朴惠仁; 俞在炯; 李宇燮; 林泰俊; 赵奎泳; 崔荷娜
Original assignee: Samsung Electronics Co Ltd
Current assignee: Samsung Electronics Co Ltd
Priority date: 2021-08-25
Filing date: 2022-07-04
Publication date: 2024-04-12

Abstract

According to various embodiments of the present disclosure, a power receiving apparatus includes: a housing, the housing comprising: a first surface facing in a first direction, a second surface facing in a second direction opposite to the first direction, and a side surface surrounding a space between the first surface and the second surface; a coil antenna wound in a circular shape, provided in an inner space of the housing, so as to wirelessly receive power from a power transmission device; a shielding sheet disposed above the coil antenna; and first and second magnets disposed adjacent to and spaced apart from an outermost coil of the coil antenna. The first magnet may be disposed such that a portion of the magnetic force induced by the first magnet is formed in the first direction. A second magnet may be coupled with the first magnet in a third direction, the third direction being defined outward from a center of the coil antenna, and the second magnet may be disposed such that a portion of a magnetic force induced by the second magnet is formed in the third direction. Various embodiments other than the various embodiments disclosed herein are possible.

Description

Electronic device comprising coil antenna and magnet

Technical Field

Various embodiments of the present disclosure relate to an electronic device including a coil antenna and a magnet.

Background

The electronic device may be equipped with a coil that supports wireless charging. The electronic device may be provided with a magnet arranged around the coil. For example, if the electronic device is provided in an attached wireless charger (or cradle in a vehicle) for charging, the magnet may be provided in a state in which the electronic device is aligned with the attached wireless charger (or cradle in the vehicle).

Disclosure of Invention

Technical problem

If the magnet is disposed around a coil supporting wireless charging, a magnetic field may be formed in a direction toward the outside of the electronic device. If the electronic device is provided in a conventional wireless charger instead of an attached wireless charger, interference with the magnetic shielding sheet of the coil occurs because a magnetic field is formed in a direction toward the outside of the electronic device. Therefore, it may be difficult to maintain the charged state and heat generation may occur.

Technical proposal

An electronic device according to various embodiments of the present disclosure may be equipped with a magnet disposed around a coil and having a magnetic structure of a vertical shape. For example, the magnet may include: a first magnet disposed in a portion adjacent to the coil and forming a magnetic field in a first direction perpendicular to the shielding sheet of the coil; and a second magnet forming a magnetic field in a second direction perpendicular to the first direction.

The power receiving apparatus according to various embodiments of the present disclosure includes: a housing, the housing comprising: a first surface facing in a first direction, a second surface facing in a second direction opposite to the first direction, and a side surface surrounding a space between the first surface and the second surface; a coil antenna provided in an inner space of the housing, configured to wirelessly receive power from a power transmission device, and wound in a circular shape; a shielding sheet disposed above the coil antenna; and first and second magnets adjacent to and disposed spaced apart from an outermost coil of the coil antenna. The first magnet is disposed such that a portion of a magnetic force (magnetism) induced by the first magnet is formed in a first direction. The second magnet is coupled with the first magnet in a third direction, the third direction being an outward direction from a center of the coil antenna, and the second magnet is disposed such that a part of a magnetic force induced by the second magnet is formed in the third direction.

The power transmission apparatus according to various embodiments of the present disclosure may include: a housing, the housing comprising: a first surface facing in a first direction, a second surface facing in a second direction opposite to the first direction, and a side surface surrounding a space between the first surface and the second surface; a coil antenna provided in an inner space of the housing, configured to wirelessly transmit power to a power receiving device, and wound in a circular shape; a shielding sheet disposed below the coil antenna; and first and second magnets adjacent to and disposed spaced apart from an outermost coil of the coil antenna. The first magnet is arranged such that a portion of the magnetic force induced by the first magnet is formed in a first direction. The second magnet is coupled with the first magnet in a third direction, the third direction being an outward direction from a center of the coil antenna, and the second magnet may be disposed such that a portion of a magnetic force induced by the second magnet is formed in a fourth direction opposite to the third direction.

Advantageous effects

By including a first magnet that forms a magnetic field in a first direction perpendicular to the shielding sheet and is disposed in a portion adjacent to the coil and a second magnet that forms a magnetic field in a second direction perpendicular to the first direction, the electronic device and the wireless charger are arranged in an aligned manner, and the electronic device according to the various embodiments of the present disclosure can improve charging efficiency.

Drawings

Fig. 1 is a block diagram of an electronic device in a network environment, in accordance with various embodiments.

Fig. 2 is a block diagram of a power management module and a battery according to various embodiments.

Fig. 3a is a perspective view of a front surface of an electronic device according to various embodiments.

Fig. 3b is a perspective view of a rear surface of the electronic device of fig. 3a, according to various embodiments.

Fig. 4 is an exploded perspective view of an electronic device according to various embodiments.

Fig. 5 is a diagram schematically describing an operation of the power transmission device to charge the power reception device according to various embodiments.

Fig. 6a, 6b, and 6c are diagrams illustrating a coil antenna and a plurality of magnets disposed in an internal space of a power receiving device according to various embodiments.

Fig. 6d is a diagram illustrating a coil antenna and a plurality of magnets arranged in an inner space of a power transmission device according to various embodiments.

Fig. 7 is a diagram showing a state in which the power receiving device and the power transmitting device have been in contact (or attached) with each other according to various embodiments.

Fig. 8 is a diagram illustrating a cross-sectional view taken along line B-B' in fig. 7, in accordance with various embodiments.

Fig. 9 is a diagram illustrating a cross-sectional view taken along line B "-B' in fig. 7, in accordance with various embodiments.

Fig. 10 is a diagram showing magnetic directions of magnets included in the power receiving apparatus and the power transmitting apparatus according to various embodiments.

Fig. 11 is a diagram for describing a method of increasing a tensile force between a plurality of magnets of a power receiving device and a plurality of magnets included in a power transmitting device according to various embodiments.

Fig. 12 is a diagram comparing tensile forces according to arrangement structures of a plurality of magnets included in the power receiving device and the power transmitting device according to various embodiments.

Fig. 13a and 13b are diagrams showing changes in pulling force and magnetic field disturbance amount according to the length of each of a plurality of magnets included in the power transmission device according to various embodiments.

Fig. 14a and 14b are diagrams showing changes in pulling force and magnetic field disturbance amount according to rotation (e.g., rotation of the power receiving device or rotation of the power transmitting device) in a state where the power receiving device and the power transmitting device have been in contact (or attached) with each other according to various embodiments.

Fig. 15a and 15b are diagrams showing changes in pulling force and magnetic field disturbance amount according to the length of each of a plurality of magnets included in the power transmission device according to various embodiments.

Fig. 16 is a diagram illustrating radiation patterns of the structures of fig. 13a and 15a, according to various embodiments.

Detailed Description

Fig. 1 is a block diagram illustrating an electronic device 101 in a network environment 100 according to various embodiments.

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

The processor 120 may run, for example, software (e.g., program 140) to control at least one other component (e.g., hardware component or software component) of the electronic device 101 that is connected to the processor 120, and may perform various data processing or calculations. According to one embodiment, as at least part of the data processing or calculation, the processor 120 may store commands or data received from another component (e.g., the sensor module 176 or the communication module 190) into the volatile memory 132, process the commands or data stored in the volatile memory 132, and store the resulting data in the non-volatile memory 134. According to an embodiment, the processor 120 may include a main processor 121 (e.g., a Central Processing Unit (CPU) or an Application Processor (AP)) or an auxiliary processor 123 (e.g., a Graphics Processing Unit (GPU), a Neural Processing Unit (NPU), an Image Signal Processor (ISP), a sensor hub processor, or a Communication Processor (CP)) that is operatively independent of or combined with the main processor 121. For example, when the electronic device 101 comprises a main processor 121 and an auxiliary processor 123, the auxiliary processor 123 may be adapted to consume less power than the main processor 121 or to be dedicated to a particular function. The auxiliary processor 123 may be implemented separately from the main processor 121 or as part of the main processor 121.

The auxiliary processor 123 (instead of the main processor 121) may control at least some of the functions or states related to at least one of the components of the electronic device 101 (e.g., the display module 160, the sensor module 176, or the communication module 190) when the main processor 121 is in an inactive (e.g., sleep) state, or the auxiliary processor 123 may control at least some of the functions or states related to at least one of the components of the electronic device 101 (e.g., the display module 160, the sensor module 176, or the communication module 190) with the main processor 121 when the main processor 121 is in an active state (e.g., running an application). According to an embodiment, the auxiliary processor 123 (e.g., an image signal processor or a communication processor) may be implemented as part of another component (e.g., the camera module 180 or the communication module 190) functionally related to the auxiliary processor 123. According to an embodiment, the auxiliary processor 123 (e.g., a neural processing unit) may include hardware structures dedicated to artificial intelligence model processing. The artificial intelligence model may be generated through machine learning. Such learning may be performed, for example, by the electronic device 101 where artificial intelligence is performed or via a separate server (e.g., server 108). The learning algorithm may include, but is not limited to, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning. The artificial intelligence model may include a plurality of artificial neural network layers. The artificial neural network may be a Deep Neural Network (DNN), a Convolutional Neural Network (CNN), a Recurrent Neural Network (RNN), a boltzmann machine limited (RBM), a Deep Belief Network (DBN), a bi-directional recurrent deep neural network (BRDNN), or a deep Q network, or a combination of two or more thereof, but is not limited thereto. Additionally or alternatively, the artificial intelligence model may include software structures in addition to hardware structures.

The memory 130 may store various data used by at least one component of the electronic device 101 (e.g., the processor 120 or the sensor module 176). The various data may include, for example, software (e.g., program 140) and input data or output data for commands associated therewith. Memory 130 may include volatile memory 132 or nonvolatile memory 134.

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

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

The sound output module 155 may 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. Speakers may be used for general purposes such as playing multimedia or playing a record. The receiver may be used to receive an incoming call. Depending on the embodiment, the receiver may be implemented separate from the speaker or as part of the speaker.

Display module 160 may visually provide information to the outside (e.g., user) of electronic device 101. The display device 160 may include, for example, a display, a hologram device, or a projector, and a control circuit for controlling a corresponding one of the display, the hologram device, and the projector. According to an embodiment, the display module 160 may comprise a touch sensor adapted to detect a touch or a pressure sensor adapted to measure the strength of the force caused by a touch.

The audio module 170 may convert sound into electrical signals and vice versa. According to an embodiment, the audio module 170 may obtain sound via the input module 150, or output sound via the sound output module 155 or headphones of an external electronic device (e.g., the electronic device 102) that is directly (e.g., wired) or wirelessly connected to the electronic device 101.

The sensor module 176 may detect an operational state (e.g., power or temperature) of the electronic device 101 or an environmental state (e.g., a state of a user) external to the electronic device 101 and then generate an electrical signal or data value corresponding to the detected state. According to an embodiment, the sensor module 176 may include, for example, a gesture sensor, a gyroscope sensor, an atmospheric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an Infrared (IR) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

Interface 177 may support one or more specific protocols that will be used to connect electronic device 101 with an external electronic device (e.g., electronic device 102) directly (e.g., wired) or wirelessly. According to an embodiment, interface 177 may include, for example, a High Definition Multimedia Interface (HDMI), a Universal Serial Bus (USB) interface, a Secure Digital (SD) card interface, or an audio interface.

The connection end 178 may include a connector via which the electronic device 101 may be physically connected with an external electronic device (e.g., the electronic device 102). According to an embodiment, the connection end 178 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

The haptic module 179 may convert the electrical signal into a mechanical stimulus (e.g., vibration or motion) or an electrical stimulus that may be recognized by the user via his sense of touch or kinesthetic sense. According to an embodiment, the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrostimulator.

The camera module 180 may capture still images or moving images. According to an embodiment, the camera module 180 may include one or more lenses, an image sensor, an image signal processor, or a flash.

The power management module 188 may manage power supply to the electronic device 101. According to an embodiment, the power management module 188 may be implemented as at least part of, for example, a Power Management Integrated Circuit (PMIC).

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

The communication module 190 may support establishing a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device 101 and an external electronic device (e.g., the electronic device 102, the electronic device 104, or the server 108) and performing communication via the established communication channel. The communication module 190 may include one or more communication processors capable of operating independently of the processor 120 (e.g., an Application Processor (AP)) and supporting direct (e.g., wired) or wireless communication. According to an embodiment, the communication module 190 may include a wireless communication module 192 (e.g., a cellular communication module, a short-range wireless communication module, or a Global Navigation Satellite System (GNSS) communication module) or a wired communication module 194 (e.g., a Local Area Network (LAN) communication module or a Power Line Communication (PLC) module). A respective one of these communication modules may communicate with external electronic devices via a first network 198 (e.g., a short-range communication network such as bluetooth, wireless fidelity (Wi-Fi) direct, or infrared data association (IrDA)) or a second network 199 (e.g., a long-range communication network such as a conventional cellular network, a 5G network, a next-generation communication network, the internet, or a computer network (e.g., a LAN or wide-area network (WAN)). These various types of communication modules may be implemented as a single component (e.g., a single chip), or may be implemented as multiple components (e.g., multiple chips) separate from each other. The wireless communication module 192 may identify and authenticate the electronic device 101 in a communication network, such as the first network 198 or the second network 199, using user information, such as an International Mobile Subscriber Identity (IMSI), stored in the user identification module 196.

The wireless communication module 192 may support a 5G network following a 4G network as well as next generation communication technologies (e.g., new Radio (NR) access technologies). NR access technologies may support enhanced mobile broadband (eMBB), large-scale machine type communication (mctc), or Ultra Reliable Low Latency Communication (URLLC). The wireless communication module 192 may support a high frequency band (e.g., millimeter wave band) to achieve, for example, a high data transmission rate. The wireless communication module 192 may support various techniques for ensuring performance over high frequency bands, such as beamforming, massive multiple-input multiple-output (massive MIMO), full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, or massive antennas, for example. The wireless communication module 192 may support various requirements specified in the electronic device 101, an external electronic device (e.g., electronic device 104), or a network system (e.g., second network 199). According to an embodiment, the wireless communication module 192 may support a peak data rate (e.g., 20Gbps or greater) for implementing an eMBB, a lost coverage (e.g., 164dB or less) for implementing an emtc, or a U-plane delay (e.g., a round trip of 0.5ms or less, or 1ms or less for each of the Downlink (DL) and Uplink (UL)) for implementing a URLLC.

The antenna module 197 may transmit signals or power to the outside of the electronic device 101 (e.g., an external electronic device) or receive signals or power from the outside of the electronic device 101 (e.g., an external electronic device). According to an embodiment, the antenna module 197 may include an antenna including a radiating element composed of a conductive material or conductive pattern formed in or on a substrate, such as a Printed Circuit Board (PCB). According to an embodiment, the antenna module 197 may include a plurality of antennas (e.g., array antennas). In this case, at least one antenna of the plurality of antennas suitable for a communication scheme used in a communication network (e.g., the first network 198 or the second network 199) may be selected, for example, by the communication module 190 (e.g., the wireless communication module 192). Signals or power may then be transmitted or received between the communication module 190 and the external electronic device via the selected at least one antenna. According to an embodiment, further components (e.g., a Radio Frequency Integrated Circuit (RFIC)) other than radiating elements may additionally be formed as part of the antenna module 197.

According to various embodiments, antenna module 197 may form a millimeter wave antenna module. According to an embodiment, a millimeter wave antenna module may include a printed circuit board, a Radio Frequency Integrated Circuit (RFIC) disposed on a first surface (e.g., a bottom surface) of the printed circuit board or adjacent to the first surface and capable of supporting a specified high frequency band (e.g., a millimeter wave band), and a plurality of antennas (e.g., array antennas) disposed on a second surface (e.g., a top surface or a side surface) of the printed circuit board or adjacent to the second surface and capable of transmitting or receiving signals of the specified high frequency band.

At least some of the above components may be interconnected via an inter-peripheral communication scheme (e.g., bus, general Purpose Input Output (GPIO), serial Peripheral Interface (SPI), or Mobile Industrial Processor Interface (MIPI)) and communicatively communicate signals (e.g., commands or data) therebetween.

According to an embodiment, commands or data may be sent or received between the electronic device 101 and the external electronic device 104 via the server 108 connected to the second network 199. Each of the electronic device 102 or the electronic device 104 may be the same type of device as the electronic device 101 or a different type of device from the electronic device 101. According to an embodiment, all or some of the operations to be performed at the electronic device 101 may be performed at one or more of the external electronic device 102, the external electronic device 104, or the server 108. For example, if the electronic device 101 should automatically perform a function or service or should perform a function or service in response to a request from a user or another device, the electronic device 101 may request the one or more external electronic devices to perform at least part of the function or service instead of or in addition to the function or service, or the electronic device 101 may request the one or more external electronic devices to perform at least part of the function or service. The one or more external electronic devices that received the request may perform the requested at least part of the function or service or perform another function or another service related to the request and transmit the result of the performing to the electronic device 101. The electronic device 101 may provide the result as at least a partial reply to the request with or without further processing of the result. For this purpose, for example, cloud computing technology, distributed computing technology, mobile Edge Computing (MEC) technology, 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. Server 108 may be an intelligent server using machine learning and/or neural networks. According to an embodiment, the external electronic device 104 or the server 108 may be included in the second network 199. The electronic device 101 may be applied to smart services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology or IoT-related technology.

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

It should be understood that the various embodiments of the disclosure and the terminology used therein are not intended to limit the technical features set forth herein to the particular embodiments, but rather include various modifications, equivalents or alternatives to the respective embodiments. For the description of the drawings, like reference numerals may be used to refer to like or related elements. It will be understood that a noun in the singular, corresponding to a term, may include one or more things, unless the context clearly indicates otherwise. As used herein, each of the phrases such as "a or B", "at least one of a and B", "at least one of a or B", "A, B or C", "at least one of A, B and C", and "at least one of A, B or C" may include any or all possible combinations of items listed with a corresponding one of the plurality of phrases. As used herein, terms such as "1 st" and "2 nd" or "first" and "second" may be used to simply distinguish one element from another element and not to limit the element in other respects (e.g., importance or order). It will be understood that if the terms "operatively" or "communicatively" are used or the terms "operatively" or "communicatively" are not used, then if an element (e.g., a first element) is referred to as being "coupled to," "connected to," or "connected to" another element (e.g., a second element), it is intended that the element can be directly (e.g., wired) connected to, wireless connected to, or connected to the other element via a third element.

As used in connection with various embodiments of the present disclosure, the term "module" may include an element implemented in hardware, software, or firmware, and may be used interchangeably with other terms (e.g., "logic," "logic block," "portion," or "circuitry"). A module may be a single integrated component adapted to perform one or more functions or a minimal unit or portion of the single integrated component. For example, according to an embodiment, a module may be implemented in the form of an Application Specific Integrated Circuit (ASIC).

The various embodiments set forth herein 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, under control of a processor, a processor (e.g., processor 120) of the machine (e.g., electronic device 101) may invoke and execute at least one of the one or more instructions stored in the storage medium with or without the use of one or more other components. This enables the machine to operate to perform at least one function in accordance with the at least one instruction invoked. The one or more instructions may include code generated by a compiler or code capable of being executed by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Wherein the term "non-transitory" merely means that the storage medium is a tangible device and does not include a signal (e.g., electromagnetic waves), but the term does not distinguish between data being semi-permanently stored in the storage medium and data being temporarily stored in the storage medium.

According to embodiments, methods according to various embodiments of the present disclosure may be included and provided in a computer program product. The computer program product may be used as a product for conducting transactions between sellers and buyers. The computer program product may be distributed in the form of a machine-readable storage medium, such as a compact disk read only memory (CD-ROM), or may be distributed (e.g., downloaded or uploaded) online via an application store, such as a playstore (tm), or may be distributed (e.g., downloaded or uploaded) directly between two user devices, such as smartphones. At least some of the computer program product may be temporarily generated if published online, or at least some of the computer program product may be stored at least temporarily in a machine readable storage medium, such as a memory of a manufacturer's server, an application store's server, or a forwarding server.

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

Fig. 2 is a block diagram 200 illustrating a power management module 188 and a battery 189, according to various embodiments.

Referring to fig. 2, the power management module 188 may include a charging circuit 210, a power conditioner 220, or a power meter 230. The charging circuit 210 may charge the battery 189 by using power supplied from an external power source external to the electronic device 101. According to an embodiment, the charging circuit 210 may select a charging scheme (e.g., normal charging or quick charging) based at least in part on the type of external power source (e.g., power outlet, USB, or wireless charging), the amount of power that can be provided from the external power source (e.g., about 20 watts or more), or the nature of the battery 189, and may use the selected charging scheme to charge the battery 189. The external power source may be connected to the electronic device 101 directly, for example, via the connection terminal 178, or wirelessly with the electronic device 101 via the antenna module 197.

The power conditioner 220 may generate a plurality of kinds of power having different voltage levels or different current levels by adjusting the voltage levels or the current levels of the power supplied from the external power source or the battery 189. The power conditioner 220 may adjust a voltage level or a current level of power supplied from an external power source or the battery 189 to a different voltage level or current level suitable for each of some components included in the electronic device 101. According to an embodiment, the power regulator 220 may be implemented in the form of a Low Drop Out (LDO) regulator or a switching regulator. Power meter 230 may measure usage status information (e.g., capacity of battery 189, number of charges or discharges, voltage, or temperature) regarding battery 189.

The power management module 188 may determine state of charge information (e.g., life, over voltage, low voltage, over current, over charge, over discharge, over heat, short circuit, or expansion) related to the charging of the battery 189 based at least in part on measured state of use information about the battery 189 using, for example, the charging circuit 210, the power conditioner 220, or the power meter 230. The power management module 188 may determine whether the state of the battery 189 is normal or abnormal based at least in part on the determined state of charge information. If it is determined that the state of battery 189 is abnormal, power management module 188 may adjust the charging of battery 189 (e.g., decrease the charging current or voltage, or stop the charging). According to an embodiment, at least some of the functions of the power management module 188 may be performed by an external control device (e.g., the processor 120).

According to an embodiment, the battery 189 may include a Protection Circuit Module (PCM) 240.PCM 240 may perform one or more functions (e.g., a pre-cut function) of various functions for preventing performance deterioration or damage of battery 189. Additionally or alternatively, the PCM 240 may be configured as at least a portion of a Battery Management System (BMS), wherein the BMS is capable of performing various functions including cell balancing, measurement of battery capacity, count of the number of times of charge or discharge, measurement of temperature, or measurement of voltage.

According to an embodiment, at least a portion of the state of charge information or usage state information about battery 189 may be measured using a corresponding sensor (e.g., a temperature sensor) of sensor module 176, power meter 230, or power management module 188. According to an embodiment, a corresponding sensor (e.g., a temperature sensor) of the sensor module 176 may be included as part of the PCM 240 or may be disposed near the battery 189 as a separate device.

Fig. 3a shows a perspective view illustrating a front surface of an electronic device 300 according to an embodiment. Fig. 3b illustrates a perspective view showing a rear surface of the electronic device 300 shown in fig. 3a, according to an embodiment.

The electronic device 300 shown in fig. 3a and 3b may be at least partially similar to the electronic device 101 in fig. 1, or may also comprise another embodiment of an electronic device.

Referring to fig. 3a and 3B, the electronic device 300 includes a housing 310, the housing 310 including a first surface (or front surface) 310A, a second surface (or rear surface) 310B, and a lateral surface 310C surrounding a space between the first surface 310A and the second surface 310B. The housing 310 may refer to a structure forming a portion of the first surface 310A, the second surface 310B, and the lateral surface 310C. The first surface 310A may be formed from at least a portion of a substantially transparent front plate 302 (e.g., a glass or polymer plate coated with various coatings). The second surface 310B may be formed from a substantially opaque back plate 311. The rear plate 311 may be formed of, for example, a coating or colored glass, ceramic, polymer, metal (e.g., aluminum, stainless steel (STS), or magnesium), or any combination thereof. The lateral surface 310C may be formed from a side frame structure (or "lateral member") 318 that is combined with the front and rear panels 302, 311 and that includes metal and/or polymer. The back plate 311 and the side frame structure 318 may be integrally formed and may be the same material (e.g., a metallic material such as aluminum).

The front plate 302 may include two first regions 310D respectively provided at long edges thereof, and seamlessly curved and extended from the first surface 310A toward the rear plate 311. Similarly, the rear plate 311 may include two second regions 310E respectively provided at long edges thereof, and seamlessly curved and extended from the second surface 310B toward the front plate 302. The front plate 302 (or the rear plate 311) may include only one region of the first regions 310D (or one of the second regions 310E). The first region 310D or the second region 310E may be partially omitted. The side frame structure 318 may have a first thickness (or width) on a side that does not include the first region 310D or the second region 310E, and may have a second thickness less than the first thickness on the other side that includes the first region 310D or the second region 310E, when viewed from the side of the electronic device 300.

The electronic device 300 may include at least one of a display 301, an input device 303, sound output devices 307 and 314, sensor modules 304 and 319, camera modules 305, 312 and 313, a key input device 317, an indicator, and a connector hole 308. The electronic device 300 may omit at least one of the above-described components (e.g., key input device 317 or a pointer), or may also include other components.

For example, the display 301 may be exposed through a majority of the front panel 302. At least a portion of the display 301 may be exposed through the front plate 302 forming a first surface 310A and a first region 310D of the lateral surface 310C. Display 301 may be combined with or adjacent to a touch sensing circuit capable of measuring touch intensity (pressure), a pressure sensor, and/or a digitizer for detecting a stylus. At least a portion of the sensor modules 304 and 319 and/or at least a portion of the key input device 317 may be disposed in the first region 310D and/or the second region 310E.

The input device 303 may include a microphone. In some embodiments, the input device 303 may include a plurality of microphones arranged to sense the direction of sound. The sound output devices 307 and 314 may include speakers. The speakers may include external speakers and receivers for calls. In some embodiments, the microphone, speaker, and connector aperture 308 are disposed in a space of the electronic device 300 and may be exposed to an external environment through at least one aperture formed in the housing 310. The holes formed in the housing 310 may be commonly used for a microphone and a speaker. The sound output means may include a speaker (e.g., a piezoelectric speaker) that operates when the hole formed in the housing 310 is excluded.

The sensor modules 304 and 319 may generate electrical signals or data corresponding to an internal operating state of the electronic device 300 or an external environmental condition. The sensor modules 304 and 319 may include a first sensor module (e.g., a proximity sensor), a second sensor module (e.g., a fingerprint sensor) disposed on the first surface 310A of the housing 310, a third sensor module (e.g., a Heart Rate Monitor (HRM) sensor), and/or a fourth sensor module (e.g., a fingerprint sensor) disposed on the second surface 310B of the housing 310. The fingerprint sensor may be disposed on the second surface 310B of the housing 310 and the first surface 310A (e.g., the display 301). The electronic device 300 may further include at least one of a gesture sensor, a gyroscope sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a color sensor, an IR sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

The camera modules 305, 312, and 313 may include a first camera device (e.g., a camera module) disposed on the first surface 310A of the electronic device 300 and a second camera device and/or flash disposed on the second surface 310B. The camera module 305 or the camera module 312 may include one or more lenses, image sensors, and/or ISPs. The flash 313 may include, for example, a Light Emitting Diode (LED) or a xenon lamp. Two or more lenses (e.g., a wide-angle lens and a telephoto lens) and an image sensor may be disposed at one side of the electronic device 300.

The key input device 317 may be provided on a lateral surface 310C of the housing 310. The electronic device 300 may not include some or all of the components of the key input device 317 described above, and the components of the key input device 317 not included may be implemented in another form, such as soft keys on the display 301. The key input device 317 may include a sensor module disposed on the second surface 310B of the housing 310. Additionally or alternatively, the key input means 317 may be implemented using pressure sensors included in the display 301.

The indicator may be disposed on the first surface 310A of the housing 310. For example, the indicator may provide status information of the electronic device 300 in an optical form. An indicator (e.g., an LED) may provide a light source associated with the operation of the camera module 305. The indicator may comprise, for example, an LED, an IR LED, or a xenon lamp.

The connector aperture 308 may include a first connector aperture 308, the first connector aperture 308 being adapted for use with a connector (e.g., a USB connector) for transmitting power and/or data to and receiving power and/or data from an external electronic device. The connector aperture 308 may include a second connector aperture adapted for use with a connector (e.g., a headphone jack) for transmitting and receiving audio signals to and from an external electronic device.

Some of the camera modules 305 and 312, some of the sensor modules 304 and 319, or indicators may be arranged to be exposed through the display 301. For example, the camera module 305, the sensor module 304, or the indicator may be disposed in an inner space of the electronic device 300 so as to be in contact with an external environment through the perforation up to the opening of the display 301 of the front plate 302. The area of the camera module 305 facing the display 301 may be formed as a transparent area having a designated transmittance as a part of the area where the content is displayed. The transmissive region may have a transmittance ranging from about 5% to about 20%. Such a transmissive region may include a region overlapping an effective region (e.g., a viewing angle region) of the camera module 305 through which light for generating an image by the image sensor passes. The transparent area of the display 301 may include areas having a lower pixel density or wiring density or both than the surrounding areas. The transmissive region may replace the aforementioned openings. The camera module 305 may include an under screen camera (UDC). The sensor module 304 may be arranged to perform a function in the interior space of the electronic device 300 without being visually exposed through the display 301. For example, in this case, the area of the display 301 facing the sensor module may not require a perforation opening.

Fig. 4 shows an exploded perspective view of an electronic device 400 according to an embodiment.

The electronic device 400 shown in fig. 4 may be at least partially similar to the electronic device 101 in fig. 1, or similar to the electronic device 300 in fig. 3a and 3b, and may also include another embodiment of an electronic device.

Referring to fig. 4, the electronic device 400 includes a side frame structure 410, a first support member 411 (e.g., a stand or support structure), a front plate 420 (e.g., a front cover), a display 430, a PCB 440, a battery 450, a second support member 460 (e.g., a rear case), a Flexible PCB (FPCB) 470, and a rear plate 480 (e.g., a rear cover or rear panel). The electronic device 400 may omit at least one of the above-described components (e.g., the first support member 411 or the second support member 460) or may further include another component. Some components of the electronic device 400 may be the same as or similar to those of the electronic device 300 shown in fig. 3a or 3b, and thus a description thereof will be omitted hereinafter.

The first support member 411 is disposed inside the electronic device 400 and may be connected to the side frame structure 410 or integrated with the side frame structure 410. The first support member 411 may be formed of, for example, a metallic material and/or a non-metallic (e.g., polymeric) material. The first support member 411 may be coupled to the display 430 at one side thereof and may also be coupled to the PCB 440 at the other side thereof. Processor 120, memory 130, and/or interface 177 may be mounted on PCB 440.

The processor may include, for example, one or more of CPU, AP, GPU, ISP, a sensor hub processor, or a CP.

The memory may include, for example, one or more of volatile memory 132 and non-volatile memory 134.

The interface may include, for example, an HDMI, USB interface, SD card interface, and/or audio interface. The interface may electrically or physically connect the electronic device 400 with an external electronic device, and may include a USB connector, an SD card/multimedia card (MMC) connector, or an audio connector.

The battery 450 is a device for powering at least one component of the electronic device 400 and may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell. At least a portion of the battery 450 may be disposed on substantially the same plane as the PCB 440. The battery 450 may be integrally provided within the electronic device 400, and may be detachably provided from the electronic device 400.

The electronic device 400 may include a coil antenna 470 wound in a circular shape. For example, the coil antenna 470 may be disposed between the rear panel 480 and the second support member 460 (e.g., attached to the rear panel 480). Coil antenna 470 may include a Magnetic Secure Transfer (MST) antenna, a Near Field Communication (NFC) antenna, and/or a wireless charging antenna. For example, the coil antenna 470 may perform short-range communication with an external electronic device, or may wirelessly transmit and receive power for charging. In other embodiments, the antenna structure may be formed by a portion of the side surface bezel structure 410 and/or the first support member 411 or a combination thereof.

In various embodiments, the electronic device 400 may include a plurality of magnets 473 disposed adjacent to the coil antenna 470. For example, the plurality of magnets 473 may be disposed in a form surrounding the outermost coil of the coil antenna 470 in a manner adjacent to the outermost coil.

The coil antenna 470 and the plurality of magnets 473 of the power receiving device 520 according to various embodiments will be described in detail later with reference to fig. 6a, 6b, and 6 c.

Fig. 5 is a diagram 500 schematically describing an operation of charging a power receiving device 520 by a power transmitting device 530 according to various embodiments.

Referring to fig. 5, the power transmission device 530 may charge the power reception device 520 by wirelessly transmitting power. For example, if the state of the battery (e.g., battery 189 in fig. 1) of the power receiving device 520 is a state in which the battery has been discharged or the available power amount is less than a specified level, the power transmitting device 530 may charge the battery 189 of the power receiving device 520 by wirelessly transmitting power.

In various embodiments, the power receiving device 520 in fig. 5 may include the electronic device 101 disclosed in fig. 1 (or the electronic device 300 in fig. 3a and 3b or the electronic device 400 in fig. 4). For example, the power receiving apparatus 520 may include at least one of a smart phone, a wearable device (e.g., a watch), or a tablet computer. The power transmission device 510 may be the same or similar to the power reception device 520. For example, the power transmitting device 530 may include a wireless charging pad, a tablet computer, or a smart phone. The power transmission device 530 may be implemented by at least one of the electronic devices 101, 102, and/or 104 disclosed in fig. 1. The power transmission device 530 may include one or more constituent elements of the electronic device 101 disclosed in fig. 1.

In various embodiments, the power transmission device 530 may have a circular housing, but the present disclosure is not limited thereto, and in another embodiment, the power transmission device 530 may have a square, rectangular, or oval housing. The power transmission device 530 may include a coil antenna disposed in an inner space of a housing of the power transmission device. The power transmission device 530 may include a plurality of magnets adjacent to and disposed to be spaced apart from the outermost coil of the coil antenna.

The coil antenna and the plurality of magnets of the power transmission device 530 according to various embodiments will be described in detail later with reference to fig. 6 d.

Fig. 6a, 6b, and 6c are diagrams 600, 630, and 650 illustrating a coil antenna 470 and a plurality of magnets 473 arranged in an interior space of a power receiving device 520 according to various embodiments.

Referring to fig. 6a, when in contact with a power transmission device (e.g., power transmission device 530 in fig. 5), a power reception device (e.g., power reception device 520 in fig. 5) may wirelessly receive power from power transmission device 530. Fig. 5 and 6a are rear views (i.e., views along the z-axis) of the electronic device 300.

In an embodiment, the power receiving device 520 may include a coil antenna (e.g., the coil antenna 470 in fig. 4) wound in a circular shape and a plurality of magnets (e.g., the plurality of magnets 473 in fig. 4) adjacent to and disposed spaced apart from the outermost coil of the coil antenna 470. For example, the plurality of magnets 473 may be disposed in a form surrounding the outermost coil of the coil antenna 470 in a manner adjacent to the outermost coil.

In various embodiments, the plurality of magnets 473 of the power receiving device 520 may be implemented in an open loop form. For example, the opening 605 may be formed by omitting at least one magnet of the plurality of magnets 473. The opening 605 may provide a path (or guide) for an electrical connection between the coil antenna 470 and wireless communication circuitry disposed in a printed circuit board (e.g., the printed circuit board 440 of fig. 4).

The present disclosure is not limited to this embodiment. Although not shown, in another embodiment, the plurality of magnets 473 may be implemented in a closed loop form.

In an embodiment, each of the plurality of magnets 473 may be rectangular in shape.

Referring to fig. 6b, slits 635 may be formed between the plurality of magnets 473. Since the slits 635 are formed between the plurality of magnets 473, if rotation occurs in a state where the magnets of the power receiving device 520 and the magnets of the power transmitting device 530 are attached to each other (e.g., rotation of the power receiving device 520 or rotation of the power transmitting device 530), separation of the power transmitting device 530 from the power receiving device 520 can be effectively prevented and since a stable pulling force is formed, a user can be provided with a poking feeling. This will be described later in detail with reference to fig. 12.

In fig. 6a and 6b, each of the plurality of magnets 473 has been shown as having a rectangular shape according to various embodiments, but the disclosure is not limited thereto. For example, as shown in fig. 6c, in another embodiment, each of the plurality of magnets 473 may have a trapezoidal shape.

Fig. 6d is a diagram 670 illustrating a coil antenna 640 and a plurality of magnets 643 disposed in an interior space of a power transmission device 530, according to various embodiments.

Referring to fig. 6d, a power transmission device (e.g., power transmission device 530 in fig. 5) may have a circular housing 535, but the present disclosure is not limited thereto. In another embodiment, the power transmission device 530 may have a square, rectangular, or oval housing.

In an embodiment, the power transmission device 530 may include a housing 535, the housing 535 including a first surface (or front surface) 535A, a second surface (or rear surface) 535B, and a side surface 535C surrounding a space between the first surface 535A and the second surface 535B. The power transmission device 530 may include a coil antenna 640 disposed in an inner space of a housing 535 of the power transmission device 530. For example, similar to the coil antenna 470 of the power receiving device 520 shown in fig. 6a, the coil antenna 640 of the power transmitting device 530 may be wound in a circular shape and disposed in the inner space of the housing 535 of the power transmitting device 530. The power transmission device 530 may include a plurality of magnets 643 adjacent to and disposed spaced apart from the outermost coils of the coil antenna 640. For example, the plurality of magnets 643 may be disposed in a form surrounding the outermost coil of the coil antenna 640 in a manner adjacent to the outermost coil.

In various embodiments, the plurality of magnets 643 of the power transmission device 530 may be implemented in an open loop form. For example, the opening 675 may be formed such that at least one magnet between at least some of the plurality of magnets 643 is omitted. For example, if the power transmission device 530 has been implemented to receive external power from a Travel Adapter (TA) in a wired manner and wirelessly supply power to the power reception device 520, the opening 675 may provide a path for arranging various wires for connection between the coil antenna 640 and the TA. Further, for example, if the power transmission device 530 includes a battery (not shown) and has been implemented to wirelessly supply power to the power reception device 520 by using the power of the battery, the opening 675 may provide a path (or guide) for electrical connection between the coil antenna 640 and the wireless communication circuit.

The present disclosure is not limited to this embodiment. Although not shown, in another embodiment, the plurality of magnets 643 may be implemented in a closed loop.

In various embodiments, although not shown, slits may be formed between the plurality of magnets 643 of the power transmission device 530 in the same manner as the plurality of magnets 473 of the power reception device 520 according to fig. 6 b.

In an embodiment, each of the plurality of magnets 643 may be rectangular in shape, but the present disclosure is not limited thereto. Although not shown, in the same manner as the plurality of magnets 473 of the power receiving device 520 according to fig. 6c, in another embodiment, each of the plurality of magnets 643 of the power transmitting device 530 may have a trapezoidal shape.

Fig. 7 is a diagram 700 showing a state in which the power receiving device 520 and the power transmitting device 530 have been in contact (or attached) with each other according to various embodiments.

Referring to fig. 7, a power receiving device (e.g., the power receiving device 520 of fig. 5) may include a coil antenna (e.g., the coil antenna 470 of fig. 4) wound in a circular shape and a plurality of magnets (e.g., the plurality of magnets 473 of fig. 4) disposed around the outermost coil of the coil antenna 470 in a manner adjacent to the outermost coil.

In an embodiment, each of the plurality of magnets 473 of the power receiving device 520 may include a first magnet and a second magnet. For example, the magnet 473a of the power receiving device 520 may include a first magnet 473aa and a second magnet 473ab. The first magnet 473aa may be disposed adjacent to the outermost coil of the coil antenna 470. The second magnet 473ab may be disposed in a manner coupled with the first magnet 473aa and further from the outermost coil than the first magnet 473aa.

In an embodiment, the first magnet 473aa and the second magnet 473ab of the power receiving device 520 may be arranged to form magnetic forces in directions different from each other.

In an embodiment, the power transmission device (e.g., the power transmission device 530 in fig. 5) may include a coil antenna (e.g., the coil antenna 640 in fig. 6 d) wound in a circular shape and a plurality of magnets (e.g., the plurality of magnets 643 in fig. 6 d) disposed around the outermost coil of the coil antenna 640 in a manner adjacent to the outermost coil.

In an embodiment, each of the plurality of magnets 643 of the power transmission device 530 may include a first magnet and a second magnet. For example, the magnet 643a of the power transmission device 530 may include a first magnet 643aa and a second magnet 643ab. The first magnet 643aa may be disposed adjacent to the outermost coil of the coil antenna 640. The second magnet 643ab may be disposed in a manner coupled with the first magnet 643aa and farther from the outermost coil than the first magnet 643aa.

In an embodiment, the first magnet 643aa and the second magnet 643ab of the power transmission device 530a may be disposed to form magnetic forces in directions different from each other.

In an embodiment, when the power receiving device 520 is in contact with (or attached to) the power transmitting device 530, the power receiving device 520 and the power transmitting device 530 may have a state in which the power receiving device 520 and the power transmitting device 530 are set in such a manner as to be aligned due to coupling between the plurality of magnets 473 of the power receiving device 520 and the plurality of magnets 643 of the power transmitting device 530. For example, when the power receiving device 520 is in contact with (or attached to) the power transmitting device 530, the power receiving device 520 and the power transmitting device 530 may be configured to magnetically attract each other due to coupling between the plurality of magnets 473 of the power receiving device 520 and the plurality of magnets 643 of the power transmitting device 530. Accordingly, the power receiving device 520 and the power transmitting device 530 may be provided in such a manner that the coil antenna 470 of the power receiving device 520 and the coil antenna 640 of the power transmitting device 530 are aligned in the z-axis direction. Since the coil antenna 470 of the power receiving device 520 and the coil antenna 640 of the power transmitting device 530 are disposed in an aligned manner, charging efficiency can be improved.

Fig. 8 is a diagram 800 illustrating a cross-sectional view taken along line B-B' in fig. 7, in accordance with various embodiments.

Referring to fig. 8, when a power receiving device (e.g., the power receiving device 520 in fig. 5) is in contact (or attached) with a power transmitting device (e.g., the power transmitting device 530 in fig. 5), a coil antenna (e.g., the coil antenna 470 in fig. 6a, 6b, or 6 c) of the power receiving device 520 and a coil antenna (e.g., the coil antenna 640 in fig. 6 d) of the power transmitting device 530 may have a state in which the coil antenna has been set in such a manner as to be aligned due to coupling between a plurality of magnets (e.g., the plurality of magnets 473 in fig. 4) of the power receiving device 520 and a plurality of magnets (e.g., the plurality of magnets 643 in fig. 6 d) of the power transmitting device 530.

In an embodiment, the first shielding sheet 810 may be disposed above the coil antenna 470 (e.g., in the z-axis direction) of the power receiving device 520. For example, the first shielding sheet 810 may improve the charging efficiency of the coil antenna 470 of the power receiving device 520 by focusing a signal (e.g., an electromagnetic signal) transmitted by the coil antenna 640 of the power transmitting device 530 in a specific direction (e.g., a z-axis direction).

In an embodiment, the power receiving device 520 may include a plurality of magnets 473 adjacent to and disposed spaced apart from the outermost coils of the coil antenna 470.

Fig. 8 illustrates a cross-sectional view taken along line B-B' in fig. 7, in accordance with various embodiments. The first magnet 473a and the second magnet 473b of the plurality of magnets 473 of the power receiving device 520 may be disposed in a symmetrical manner to each other with respect to the coil antenna 470. For example, the first magnet 473a of the power receiving device 520 may have a form in which the first magnet 473a is disposed on the left side (e.g., -x-axis direction) of the coil antenna 470. The second magnet 473b may have a form in which the second magnet 473b is disposed on the right side (e.g., the x-axis direction) of the coil antenna 470.

In an embodiment, each of the first magnet 473a and the second magnet 473b of the power receiving device 520 may include a plurality of magnets.

In an embodiment, the first magnet 473a of the power receiving device 520 may include a (1-1) th magnet 473aa and a (1-2) th magnet 473ab. The (1-1) th magnet 473aa of the first magnet 473a of the power receiving device 520 may be disposed adjacent to the outermost coil of the coil antenna 470. The (1-2) th magnet 473ab of the first magnet 473a of the power receiving device 520 may be disposed in a coupled manner with the (1-1) th magnet 473aa (e.g., disposed in a coupled manner with the (1-1) th magnet 473aa in the-x axis direction).

In this disclosure, the same names may be used to refer to different objects according to embodiments. For example, in fig. 7, the name "first magnet" is used to indicate the object 473aa, while in fig. 8, the name "first magnet" is used to indicate the object 473a, and the object 473aa is named "1-1" th magnet ".

In an embodiment, the (1-1) th magnet 473aa and the (1-2) th magnet 473ab of the first magnet 473a of the power receiving device 520 may be arranged such that the magnetic forces are formed in different directions. For example, the (1-1) th magnet 473aa of the first magnet 473a may be disposed such that a portion of the magnetic force induced by the (1-1) th magnet 473aa is formed in a first direction (e.g., a z-axis direction) perpendicular to the first shielding sheet 810 of the first magnet 473 a. The (1-2) th magnet 473ab of the first magnet 473a may be disposed such that a portion of the magnetic force induced by the (1-2) th magnet 473ab is formed in a second direction (e.g., an x-axis direction) perpendicular to the first direction (e.g., the z-axis direction).

In an embodiment, the second magnet 473b of the power receiving device 520 may include the (2-1) th magnet 473ba and the (2-2) th magnet 473bb. The (2-1) th magnet 473ba of the second magnet 473b may be provided adjacent to the outermost coil of the coil antenna 470. The (2-2) th magnet 473bb of the second magnet 473b may be disposed in a coupled manner with the (2-1) th magnet 473ba (e.g., disposed in a coupled manner with the (2-1) th magnet 473ba in the x-axis direction).

In an embodiment, the (2-1) th magnet 473ba and the (2-2) th magnet 473bb of the second magnet 473b of the power receiving device 520 may be arranged such that the magnetic forces are formed in different directions. For example, the (2-1) th magnet 473ba of the second magnet 473b may be disposed such that a portion of the magnetic force induced by the (2-1) th magnet 473ba is formed in a first direction (e.g., a z-axis direction) perpendicular to the shielding sheet 810. The (2-2) th magnet 473bb of the second magnet 473b may be arranged such that a portion of the magnetic force induced by the (2-2) th magnet 473bb is formed in a second direction (e.g., an x-axis direction) perpendicular to the first direction (e.g., the z-axis direction).

In an embodiment, the second shielding sheet 820 may be disposed below the coil antenna 640 of the power transmission device 530 (e.g., -z-axis direction). For example, the second shielding sheet 820 may improve the charging efficiency of the coil antenna 470 of the power receiving device 520 by concentrating a signal (e.g., an electromagnetic signal) transmitted by the coil antenna 640 of the power transmitting device 530 in a specific direction (e.g., a z-axis direction).

In an embodiment, the power transmission device 530 may include a plurality of magnets 673 adjacent to and disposed spaced apart from the outermost coils of the coil antenna 640. For example, the first magnet 643a and the second magnet 643b among the plurality of magnets 643 of the power transmission device 530 may be disposed in a symmetrical manner to each other based on the coil antenna 640. For example, the first magnet 643a of the power transmission device 530 may have a form in which the first magnet 643a is disposed on the left side (e.g., -x-axis direction) of the coil antenna 640. The second magnet 643b may have a form in which the second magnet 643b is disposed on the right side (for example, x-axis direction) of the coil antenna 640.

In an embodiment, each of the first magnet 643a and the second magnet 643b of the power transmission device 530 may include a plurality of magnets.

In an embodiment, the first magnet 643a of the power transmission device 530 may include a (1-1) th magnet 643aa and a (1-2) th magnet 643ab. For example, the (1-1) th magnet 643aa of the first magnet 643a may be disposed adjacent to the outermost coil of the coil antenna 640. The (1-2) th magnet 643ab of the first magnet 643a may be disposed in a coupled manner with the (1-1) th magnet 643aa (e.g., disposed in a coupled manner with the (1-1) th magnet 643aa in the-x-axis direction).

In an embodiment, the (1-1) th magnet 643aa and the (1-2) th magnet 643ab of the first magnet 643a of the power transmission device 530 may be disposed such that magnetic forces are formed in different directions. For example, the (1-1) th magnet 643aa of the first magnet 643a may be disposed such that a portion of the magnetic force induced by the (1-1) th magnet 643aa is formed in a first direction (e.g., a z-axis direction) perpendicular to the second shielding sheet 820. The (1-2) th magnet 643ab of the first magnet 643a may be disposed such that a portion of the magnetic force induced by the (1-2) th magnet 643ab is formed in a second direction (e.g., an x-axis direction) perpendicular to the first direction (e.g., a z-axis direction).

In an embodiment, the second magnet 643b of the power transmission device 530 may include a (2-1) th magnet 643ba and a (2-2) th magnet 643bb. The (2-1) th magnet 643ba of the second magnet 643b may be disposed adjacent to the outermost coil of the coil antenna 640. The (2-2) th magnet 643bb of the second magnet 643b may be disposed in a coupled manner with the (2-1) th magnet 643ba (e.g., disposed in a coupled manner with the (2-1) th magnet 643ba in the x-axis direction).

In an embodiment, the (2-1) th magnet 643ba and the (2-2) th magnet 643bb of the second magnet 643b of the power transmission device 530 may be disposed such that magnetic forces are formed in different directions. For example, the (2-1) th magnet 643ba of the second magnet 643b may be disposed such that a portion of the magnetic force induced by the (2-1) th magnet 643ba is formed in a first direction (e.g., a z-axis direction) perpendicular to the second shielding plate 820. The (2-2) th magnet 643bb of the second magnet 643b may be disposed such that a portion of the magnetic force induced by the (2-2) th magnet 643bb is formed in a second direction (e.g., an x-axis direction) perpendicular to the first direction (e.g., a z-axis direction).

In an embodiment, when the power receiving device 520 and the power transmitting device 530 are in contact with each other, the magnetic force generated by the (1-1) th magnet 643aa of the power transmitting device 530 may be induced in a first direction (e.g., z-axis direction), may be induced by the (1-1) th magnet 473aa of the power receiving device 520 in a first direction (e.g., z-axis direction), may be induced by the (1-2) th magnet 473ab of the power receiving device 520 in a third direction (e.g., -x-axis direction), and may be induced by the (1-2) th magnet 643ab of the power transmitting device 530 in a second direction (e.g., x-axis direction). Further, the magnetic force generated by the (2-1) th magnet 643ba of the power transmission device 530 may be induced in a first direction (e.g., z-axis direction), may be induced in a first direction (e.g., z-axis direction) by the (2-1) th magnet 473ba of the power reception device 520, may be induced in a second direction (e.g., x-axis direction) by the (2-2) th magnet 473bb of the power reception device 520, and may be induced in a third direction (e.g., -x-axis direction) by the (2-2) th magnet 643bb of the power transmission device 530.

In various embodiments, since the magnetic force generated when the power receiving device 520 is in contact with the power transmitting device 530 forms a closed loop, the magnetic force introduced into the first shielding sheet 810 of the power receiving device 520 and the second shielding sheet 820 of the power transmitting device 530 may be reduced. Therefore, the charging efficiency can be improved.

Fig. 9 is a diagram 900 illustrating a cross-sectional view taken along line B "-B' in fig. 7, in accordance with various embodiments.

Referring to fig. 9, as shown by reference numeral <910>, a power receiving device (e.g., the power receiving device 520 of fig. 5) may include a coil antenna (e.g., the coil antenna 470 of fig. 6a, 6b, or 6 c) wound in a circular shape and a plurality of magnets 473 adjacent to and disposed spaced apart from the outermost coil of the coil antenna 470. The first shielding sheet 810 may be disposed above the coil antenna 470 (e.g., in the z-axis direction) of the power receiving device 520.

In an embodiment, the power receiving device 520 may include a second magnet 473b disposed on the right side (e.g., the x-axis direction) of the coil antenna 470. Although not shown, the first magnet 473a may be disposed on the left side (e.g., -x-axis direction) of the coil antenna 470. The second magnet 473b of the power receiving device 520 may include a (2-1) th magnet 473ba and a (2-2) th magnet 473bb. The (2-1) th magnet 473ba of the second magnet 473b may be provided adjacent to the outermost coil of the coil antenna 470. The (2-2) th magnet 473bb of the second magnet 473b may be disposed in a coupled manner with the (2-1) th magnet 473ba (e.g., disposed in a coupled manner with the (2-1) th magnet 473ba in the x-axis direction).

In an embodiment, the (2-1) th magnet 473ba and the (2-2) th magnet 473bb of the second magnet 473b of the power receiving device 520 may be arranged such that the magnetic forces are formed in different directions. For example, the (2-1) th magnet 473ba of the second magnet 473b may be disposed such that a portion of the magnetic force induced by the (2-1) th magnet 473ba is formed in a first direction (e.g., a z-axis direction) perpendicular to the shielding sheet 810. The (2-2) th magnet 473bb of the second magnet 473b may be disposed such that a portion of the magnetic force induced by the (2-2) th magnet 473bb is formed in a second direction (e.g., an x-axis direction) perpendicular to the first direction (e.g., the z-axis direction).

In an embodiment, the power transmission device (e.g., the power transmission device 530 in fig. 5) may include a coil antenna (e.g., the coil antenna 640 in fig. 6 d) wound in a circular shape and a plurality of magnets 643 adjacent to and disposed to be spaced apart from an outermost coil of the coil antenna 640. The second shielding sheet 820 may be disposed under the coil antenna 640 of the power transmission device 530 (e.g., -z-axis direction).

In an embodiment, the power transmission device 530 may include a second magnet 643b disposed on the right side (e.g., x-axis direction) of the coil antenna 640. Although not shown, the first magnet 643a may be disposed on the left side (e.g., -x-axis direction) of the coil antenna 640.

In an embodiment, the power transmission device 530 may include a shielding material 911 (e.g., a steel plate for shielding or a magnetic substance for shielding) provided on one surface of the (2-2) th magnet 643bb of the second magnet 643b and used for guiding a magnetic force. The shielding material 911 may be formed of a steel plate.

In an embodiment, when the power receiving device 520 and the power transmitting device 530 are in contact with each other, the magnetic force generated by the (2-1) th magnet 643ba of the power transmitting device 530 may be induced in a first direction (e.g., z-axis direction), may be induced by the (2-1) th magnet 473ba of the power receiving device 520 in the first direction (e.g., z-axis direction), may be induced by the (2-2) th magnet 473bb of the power receiving device 520 in a second direction (e.g., x-axis direction), and may be induced by the (2-2) th magnet 643bb of the power transmitting device 530 in a third direction (e.g., -x-axis direction). Since the shielding material 911 for guiding the magnetic force is provided on one surface of the (2-2) th magnet 643bb of the second magnet 643b, it is possible to prevent the magnetic force induced by the (2-2) th magnet 643bb of the power transmission device 530 in the second direction (e.g., -x-axis direction) from being induced to the outward direction (e.g., x-axis direction) of the (2-2) th magnet 643 bb.

Among constituent elements of the power receiving device 520 and the power transmitting device 530 shown by reference numerals <930>, <950>, <970> and <990> described later according to various embodiments, constituent elements of the power receiving device 520 and the power transmitting device 530 which are substantially identical to those of the reference numeral <910> are assigned the same reference numerals, and detailed descriptions thereof may be omitted.

In comparison with reference numeral <910>, in reference numeral <930> according to various embodiments, the (2-2) th magnet 643bb of the second magnet 643b included in the power transmission device 530 may be disposed such that a portion of the magnetic force induced by the (2-2) th magnet 643bb is formed in a fourth direction (e.g., a direction between-x axis and-z axis), that is, a direction inclined from the first direction (e.g., z-axis direction).

In an embodiment, when the power receiving device 520 and the power transmitting device 530 are in contact with each other, the magnetic force generated by the (2-1) th magnet 643ba of the power transmitting device 530 may be induced in a first direction, may be induced by the (2-1) th magnet 473ba of the power receiving device 520 in a first direction (e.g., a z-axis direction), may be induced by the (2-2) th magnet 473bb of the power receiving device 520 in a second direction (e.g., an x-axis direction), and may be induced by the (2-2) th magnet 643bb of the power transmitting device 530 in a fourth direction (e.g., a direction between the-x axis and the-z axis).

In various embodiments, the reference numeral <950> may include a shielding material 951 disposed below (e.g., -z-axis direction) the second magnet 643b of the power transmission device 530 and used to guide the magnetic force, as compared to the reference numeral <930 >.

In an embodiment, since the shielding material 951 for guiding the magnetic force is disposed below the second magnet 643b (e.g., -z-axis direction), the magnetic force induced by the (2-2) th magnet 643bb of the power transmission device 530 in the fourth direction (e.g., the direction between the-x-axis and the-z-axis) can be prevented from being induced in the outward direction (e.g., -z-axis direction) of the (2-2) th magnet 643 bb. Here, the outward direction may refer to a direction (e.g., -z-axis direction or x-axis direction) from the inside of the power transmission device 530/the power reception device 520 to the outside thereof.

In fig. 8 and reference numerals <910>, <930> and <950> of fig. 9 according to various embodiments, it has been described that each of the first magnet 473a, 643a and the second magnet 473b, 643b of the power receiving device 520 and the power transmitting device 530 includes two magnets 473aa and 473ab, 643aa and 643ab, 473ba and 473bb, 643ba and 643bb, but the present disclosure is not limited thereto.

For example, as shown by reference numeral <970>, each of the first magnet 473a, 643a and the second magnet 473b, 643b of the power receiving device 520 and the power transmitting device 530 may include more than two magnets. For example, the second magnet 473b of the power receiving device 520 may include a (2-1) th magnet 473ba, a (2-2) th magnet 473bb, and a (2-3) th magnet 473bc. The (2-1) th magnet 473ba of the second magnet 473b may be provided adjacent to the outermost coil of the coil antenna 470. The (2-2) th magnet 473bb of the second magnet 473b may be disposed in a coupled manner with the (2-1) th magnet 473ba (e.g., disposed in a coupled manner with the (2-1) th magnet 473ba in the x-axis direction). The (2-3) th magnet 473bc of the second magnet 473b may be disposed in a coupled manner with the (2-2) th magnet 473bb (e.g., disposed in a coupled manner with the (2-2) th magnet 473bb in the x-axis direction). In an embodiment, the (2-3) th magnet 473bc may be disposed opposite the (2-1) th magnet 473ba with respect to the (2-2) th magnet 473bb.

In an embodiment, the (2-1) th magnet 473ba, the (2-2) th magnet 473bb, and the (2-3) th magnet 473bc of the second magnet 473b included in the power receiving device 520 may be provided such that the magnetic forces are formed in different directions. For example, the (2-1) th magnet 473ba of the second magnet 473b may be disposed such that a portion of the magnetic force induced by the (2-1) th magnet 473ba is formed in a first direction (e.g., a z-axis direction) perpendicular to the shielding sheet 810. The (2-2) th magnet 473bb of the second magnet 473b may be arranged such that a portion of the magnetic force induced by the (2-2) th magnet 473bb is formed in a second direction (e.g., an x-axis direction) perpendicular to the first direction (e.g., the z-axis direction). The (2-3) th magnet 473bc of the second magnet 473b may be arranged such that a portion of the magnetic force induced by the (2-3) th magnet 473bc is formed in a fourth direction (e.g., -z-axis direction), i.e., a direction opposite to the first direction (e.g., z-axis direction).

In an embodiment, the second magnet 643b included in the power transmission device 530 may include a (2-1) th magnet 643ba, a (2-2) th magnet 643bb, and a (2-3) th magnet 643bc. The (2-1) th magnet 643ba of the second magnet 643b may be disposed adjacent to the outermost coil of the coil antenna 640. The (2-2) th magnet 643bb of the second magnet 643b may be disposed in a coupled manner with the (2-1) th magnet 643ba (e.g., disposed in a coupled manner with the (2-1) th magnet 643ba in the x-axis direction). The (2-3) th magnet 643bc of the second magnet 643b may be disposed in a coupled manner with the (2-2) th magnet 643bb (e.g., disposed in a coupled manner with the (2-2) th magnet 643bb in the x-axis direction).

In an embodiment, the (2-1) th magnet 643ba, the (2-2) th magnet 643bb, and the (2-3) th magnet 643bc of the second magnet 643b included in the power transmission device 530 may be provided so that magnetic forces are formed in different directions. For example, the (2-1) th magnet 643ba of the second magnet 643b may be disposed such that a portion of the magnetic force induced by the (2-1) th magnet 643ba is formed in a first direction (e.g., a z-axis direction) perpendicular to the second shielding plate 820. The (2-2) th magnet 643bb of the second magnet 643b may be disposed such that a portion of the magnetic force induced by the (2-2) th magnet 643bb is formed in a second direction (e.g., an x-axis direction) perpendicular to the first direction (e.g., a z-axis direction). The (2-3) th magnet 643bc of the second magnet 643b may be disposed such that a portion of the magnetic force induced by the (2-3) th magnet 643bc is formed in a fourth direction (e.g., -z-axis direction), i.e., a direction opposite to the first direction (e.g., z-axis direction).

In an embodiment, when the power receiving device 520 and the power transmitting device 530 are in contact with each other, the magnetic force generated by the (2-1) th magnet 643ba of the power transmitting device 530 may be induced in a first direction (e.g., z-axis direction), may be induced in the first direction (e.g., z-axis direction) by the (2-1) th magnet 473ba of the power receiving device 520, may be induced in a second direction (e.g., x-axis direction) by the (2-2) th magnet 473bb of the power receiving device 520, may be induced in a fourth direction (e.g., -z-axis direction) by the (2-3) th magnet 643bc of the power transmitting device 530, and may be induced in a third direction (e.g., -x-axis direction) by the (2-2) th magnet 643bc of the power transmitting device 530.

In various embodiments, in comparison with reference numeral <950>, in reference numeral <990>, the second magnet 643b of the power transmission device 530 may include a region 643bd (e.g., a non-magnetized region) in which no magnet is disposed between the (2-1) th magnet 643ba and the (2-2) th magnet 643 bb. For example, the power transmission device 530 may include a region 643bd (e.g., a non-magnetized region) in which no magnet is arranged between the (2-1) th magnet 643ba and the (2-2) th magnet 643bb, thereby effectively reducing the amount of magnetic field interference of the shielding sheet 810 of the power reception device 520. For example, when the width of the region 643bd in which no magnet is provided between the (2-1) th magnet 643ba and the (2-2) th magnet 643bb becomes large in the x-axis direction, the magnetic field interference amount of the shielding sheet 810 of the power receiving device 520 may also become smaller. This will be described in detail later with reference to fig. 13 b.

In an embodiment, when the power receiving device 520 and the power transmitting device 530 are in contact with each other, the magnetic force generated by the (2-1) th magnet 643ba of the power transmitting device 530 may be induced in the first direction (e.g., the z-axis direction), may be induced by the (2-1) th magnet 473ba of the power receiving device 520 in the first direction (e.g., the z-axis direction), may be induced by the (2-2) th magnet 473bb of the power receiving device 520 in the third direction (e.g., the x-axis direction), and may be induced by the (2-2) th magnet 643b of the power transmitting device 530 in the fourth direction (e.g., -the z-axis direction).

In fig. 9 according to various embodiments, it has been described that the shielding materials 911, 951 for guiding the magnetic force are disposed on one surface of the second magnet 643b of the power transmission device 530, but the present disclosure is not limited thereto. For example, in another embodiment, at least one shielding material may be disposed on one surface of the second magnet 473b (and/or the first magnet 473 a) of the power receiving device 520.

In various embodiments, although not shown, the second magnet 473b of the power receiving device 520 may include a region (e.g., a non-magnetized region) in which no magnet is arranged between the (2-1) th magnet 473ba and the (2-2) th magnet 473 bb.

As described with reference to reference numerals <910>, <930>, <950>, <970> and <990> of fig. 9 according to various embodiments, the magnetic force generated when the power receiving device 520 is in contact with the power transmitting device 530 forms a closed loop. Accordingly, since the magnetic force introduced into the first shielding sheet 810 of the power receiving device 520 and the second shielding sheet 820 of the power transmitting device 530 becomes smaller, the charging efficiency can be improved.

Fig. 10 is a diagram 1000 showing magnetic force directions of magnets included in the power receiving device 520 and the power transmitting device 530 according to various embodiments.

Fig. 10 is a diagram illustrating a cross-sectional view taken along line B-B' in fig. 7, according to various embodiments.

Reference numeral <1010> of fig. 10 is a diagram showing the following according to various embodiments: the direction of magnetic force when the power receiving device (e.g., the power receiving device 520 in fig. 5) including the coil antenna (e.g., the coil antenna 470 in fig. 4) and the plurality of magnets (e.g., the plurality of magnets 473 in fig. 4) and the power transmitting device (e.g., the power transmitting device 530 in fig. 5) including the coil antenna (e.g., the coil antenna 640 in fig. 6 d) and the plurality of magnets 643 are in contact (or attached) with each other.

In an embodiment, the power receiving device 520 may include a coil antenna 470 wound in a circular shape and a plurality of magnets 473 adjacent to and disposed spaced apart from the outermost coil of the coil antenna 470. The first shielding sheet 810 may be disposed above the coil antenna 470 (e.g., in the z-axis direction) of the power receiving device 520.

In an embodiment, the power receiving device 520 may include a first magnet 473a disposed on the left side (e.g., -x-axis direction) of the coil antenna 470 and a second magnet 473b disposed on the right side (e.g., x-axis direction) of the coil antenna 470.

In an embodiment, the first magnet 473a of the power receiving device 520 may include a (1-1) th magnet 473aa and a second magnet 473ab. The (1-1) th magnet 473aa of the first magnet 473a may be disposed adjacent to the outermost coil of the coil antenna 470 such that a portion of the magnetic force induced by the (1-1) th magnet 473aa is formed in a first direction (e.g., the z-axis direction) perpendicular to the first shielding sheet 810. The (1-2) th magnet 473ab of the first magnet 473a may be disposed in a coupled manner with the (1-1) th magnet 473aa (e.g., disposed in a coupled manner with the (1-1) th magnet 473aa in the-x-axis direction), and may be disposed such that a portion of the magnetic force induced by the (1-2) th magnet 473ab is formed in a second direction (e.g., -x-axis direction) perpendicular to the first direction (e.g., z-axis direction).

In an embodiment, the second magnet 473b of the power receiving device 520 may include the (2-1) th magnet 473ba and the (2-2) th magnet 473bb. The (2-1) th magnet 473ba of the second magnet 473b may be disposed adjacent to the outermost coil of the coil antenna 470 and may be disposed such that a portion of the magnetic force induced by the (2-1) th magnet 473ba is formed in a first direction (e.g., a z-axis direction) perpendicular to the shielding sheet 810. The (2-2) th magnet 473bb of the second magnet 473b may be disposed in a coupled manner with the (2-1) th magnet 473ba (e.g., disposed in a coupled manner with the (2-1) th magnet 473ba in the x-axis direction), and may be disposed such that a portion of the magnetic force induced by the (2-2) th magnet 473bb is formed in a third direction (e.g., the x-axis direction) perpendicular to the first direction (e.g., the z-axis direction).

In an embodiment, the power transmission device 530 may include a coil antenna 640 wound in a circular shape and a plurality of magnets 643 adjacent to and disposed to be spaced apart from an outermost coil of the coil antenna 640. The second shielding sheet 820 may be disposed under the coil antenna 640 of the power transmission device 530 (e.g., -z-axis direction).

In an embodiment, the power transmission device 530 may include a first magnet 643a disposed on the left side (e.g., -x-axis direction) of the coil antenna 640 and a second magnet 643b disposed on the right side (e.g., x-axis direction) of the coil antenna 640.

In an embodiment, the first magnet 643a of the power transmission device 530 may include a (1-1) th magnet 643aa and a (1-2) th magnet 643ab. For example, the (1-1) th magnet 643aa of the first magnet 643a may be disposed adjacent to the outermost coil of the coil antenna 640, and may be disposed such that a portion of the magnetic force induced by the (1-1) th magnet 643aa is formed in a first direction (e.g., a z-axis direction) perpendicular to the shielding sheet 820. The (1-2) th magnet 643ab of the first magnet 643a may be disposed in a coupled manner with the (1-1) th magnet 643aa (e.g., disposed in a coupled manner with the (1-1) th magnet 643aa in the-x axis direction), and may be disposed such that a portion of the magnetic force induced by the (1-2) th magnet 643ab is formed in a fourth direction (e.g., a direction between the x axis and the-z axis), i.e., a direction oblique to the first direction (e.g., the z axis direction).

In an embodiment, the second magnet 643b of the power transmission device 530 may include a (2-1) th magnet 643ba and a (2-2) th magnet 643bb. The (2-1) th magnet 643ba of the second magnet 643b may be disposed adjacent to the outermost coil of the coil antenna 640, and may be disposed such that a portion of the magnetic force induced by the (2-1) th magnet 643ba is formed in a first direction (e.g., a z-axis direction) perpendicular to the second shield sheet 820. The (2-2) th magnet 643bb of the second magnet 643b may be disposed in a coupled manner with the (2-1) th magnet 643ba (e.g., disposed in a coupled manner with the (2-1) th magnet 643ba in the x-axis direction), and may be disposed such that a portion of the magnetic force induced by the (2-2) th magnet 643bb is formed in a fifth direction (e.g., a direction between the-x axis and the-z axis), i.e., a direction inclined from the first direction (e.g., the z-axis direction). In an embodiment, a shielding material 951 disposed below the second magnet 643b of the power transmission device 530 (e.g., -z-axis direction) and used to guide a magnetic force may be included.

In an embodiment, when the power receiving device 520 and the power transmitting device 530 are in contact with each other, the magnetic force generated by the (1-1) th magnet 643aa of the power transmitting device 530 may be induced in a first direction (e.g., a z-axis direction), may be induced by the (1-1) th magnet 473aa of the power receiving device 520 in the first direction (e.g., the z-axis direction), may be induced by the (1-2) th magnet 473ab of the power receiving device 520 in a second direction (e.g., the-x-axis direction), and may be induced 1015 by the (1-2) th magnet 643ab of the power transmitting device 530 in a fourth direction (e.g., a direction between the x-axis and the-z-axis).

In an embodiment, when the power receiving device 520 and the power transmitting device 530 are in contact with each other, the magnetic force generated by the (2-1) th magnet 643ba of the power transmitting device 530 may be induced in a first direction (e.g., z-axis direction), may be induced by the (2-1) th magnet 473ba of the power receiving device 520 in the first direction (e.g., z-axis direction), may be induced by the (2-2) th magnet 473bb of the power receiving device 520 in a third direction (e.g., x-axis direction), and may be induced by the (2-2) th magnet 643bb of the power transmitting device 530 in a fifth direction (e.g., a direction between-x-axis and-z-axis) (1015).

In describing constituent elements of the power receiving apparatus 520 and the power transmitting apparatus 530 shown by reference numerals <1030> and <1050> described later according to various embodiments, constituent elements of the power receiving apparatus 520 and the power transmitting apparatus 530 substantially identical to reference numeral <1010> are given identical reference numerals, and detailed descriptions thereof may be omitted.

Reference numeral <1030> of fig. 10 is a diagram showing the following according to various embodiments: the direction of magnetic force when the power receiving device 520 including the coil antenna 470 and the plurality of magnets 473 and the power transmitting device 530 not including the coil antenna 640 and the plurality of magnets 643 are in contact with each other.

In an embodiment, when the power receiving device 520 and the power transmitting device 530 are in contact with each other, the magnetic force generated by the (1-1) th magnet 473aa of the power receiving device 520 may be induced in a first direction (e.g., the z-axis direction), and the magnetic force generated by the (1-2) th magnet 473ab of the power receiving device 520 may be induced in a second direction (e.g., -x-axis direction) (1035). The magnetic force generated by the (2-1) th magnet 473ba of the power receiving device 520 may be induced in a first direction (e.g., the z-axis direction), and the magnetic force generated by the (2-2) th magnet 473bb of the power receiving device 520 may be induced in a third direction (e.g., the x-axis direction) (1035).

Reference numeral <1050> of fig. 10 is a diagram showing the following according to various embodiments: the direction of magnetic force when the power receiving device 520 including no coil antenna 470 and the plurality of magnets 473 and the power transmitting device 530 including the coil antenna 640 and the plurality of magnets 643 are in contact with each other.

In an embodiment, when the power receiving device 520 and the power transmitting device 530 are in contact with each other, the magnetic force generated by the (1-1) th magnet 643aa of the power transmitting device 530 may be induced in a first direction (e.g., a z-axis direction) and may be induced (1055) by the (1-2) th magnet 643ab of the power transmitting device 530 in a fourth direction (e.g., a direction between the x-axis and the-z-axis). The magnetic force generated by the (2-1) th magnet 643ba of the power transmission device 530 may be induced in a first direction (e.g., a z-axis direction) and may be induced (1055) by the (2-2) th magnet 643bb of the power transmission device 530 in a fifth direction (e.g., a direction between the x-axis and the-z-axis).

Fig. 11 is a diagram 1100 for describing a method of increasing a tensile force between a plurality of magnets 473 of a power receiving device 520 and a plurality of magnets 643 included in a power transmitting device 530, according to various embodiments.

Referring to fig. 11, a second magnet (e.g., second magnet 473b in fig. 8) disposed adjacent to a coil antenna (e.g., coil antenna 470 in fig. 4) of a power receiving apparatus (e.g., power receiving apparatus 520 in fig. 5) may include a (2-1) th magnet 473ba and a (2-2) th magnet 473bb. The (2-1) th magnet 473ba of the second magnet 473b may be provided adjacent to the outermost coil of the coil antenna 470. The (2-2) th magnet 473bb of the second magnet 473b may be disposed in a coupled manner with the (2-1) th magnet 473ba (e.g., disposed in a coupled manner with the (2-1) th magnet 473ba in the x-axis direction).

In an embodiment, a second magnet (e.g., second magnet 643b in fig. 8) disposed adjacent to a coil antenna (coil antenna 640 in fig. 6 d) of a power transmission device (e.g., power transmission device 530 in fig. 5) may include a (2-1) th magnet 643ba and a (2-2) th magnet 643bb. The (2-1) th magnet 643ba of the second magnet 643b may be disposed adjacent to the outermost coil of the coil antenna 640. The (2-2) th magnet 643bb of the second magnet 643b may be disposed in a coupled manner with the (2-1) th magnet 643ba (e.g., disposed in a coupled manner with the (2-1) th magnet 643ba in the x-axis direction).

In an embodiment, the width of the (2-1) th magnet 473ba of the power receiving device 520 and the width of the (2-1) th magnet 643ba of the power transmitting device 530 in the x-axis direction may each be the first length 1111.

In an embodiment, as shown by reference numeral <1110>, the width of the (2-2) th magnet 473bb provided to be coupled with the (2-1) th magnet 473ba of the power receiving device 520 and the width of the (2-2) th magnet 643bb provided to be coupled with the (2-1) th magnet 643ba of the power transmitting device 530 may each be a second length 1113 in the x-axis direction longer than the first length 1111.

In another embodiment, as shown by reference numeral <1130> or <1150>, the width of the (2-2) th magnet 473bb provided to be coupled with the (2-1) th magnet 473ba of the power receiving device 520 or the width of the (2-2) th magnet 643bb provided to be coupled with the (2-1) th magnet 643ba of the power transmitting device 530 may be the third length 1131 in the x-axis direction longer than the second length 1113.

In various embodiments, since the width of the (2-1) th magnet 473ba of the power receiving device 520 and the width of the (2-1) th magnet 643ba of the power transmitting device 530 are the same as the first length 1111, the power receiving device 520 and the power transmitting device 530 may be disposed in alignment with each other (e.g., the power receiving device 520 and the power transmitting device 530 are disposed in automatic alignment with each other at the center thereof according to the axis C) because the axis C (e.g., the middle zone) is constantly maintained. The width of the (2-1) th magnet 473ba and the width of the (2-1) th magnet 643ba of the power transmission device 530 may be the same as the first length 1111, and the width of the (2-2) th magnet 473bb provided in a coupled manner with the (2-1) th magnet 473ba of the power reception device 520 or the width of the (2-2) th magnet 643bb provided in a coupled manner with the (2-1) th magnet 643ba of the power transmission device 530 may have a third length 1131 longer than each of the first length 1111 and the second length 1113. Accordingly, the tension between the power transmitting device 530 and the power receiving device 520 can be increased.

Fig. 12 is a graph 1200 comparing tensile forces according to an arrangement of a plurality of magnets included in the power receiving device 520 and the power transmitting device 530, according to various embodiments.

Fig. 12 according to various embodiments is a diagram showing a case where rotation (e.g., rotation of the power receiving device 520 or rotation of the power transmitting device 530) occurs in a state where the power receiving device (e.g., the power receiving device 520 in fig. 5) and the power transmitting device (e.g., the power transmitting device 530 in fig. 5) have been in contact (or attached) with each other.

In the conventional arrangement 1220 of the plurality of magnets 473, 643a, and 643b included in the power receiving device and the power transmitting device shown in reference numeral <1210> of fig. 12, each of the plurality of magnets of the power receiving device may include a magnet having an N-S form, and each of the plurality of magnets of the power transmitting device may include a magnet having an S-N form.

In an embodiment, in the graph shown by reference numeral <1250>, the x-axis may indicate the rotation angle 1251 and the y-axis may indicate the pulling force 1253.

In the embodiment, in the case of the conventional arrangement 1220, when the rotation 1211 occurs in a state where the magnet 473 of the power receiving device and the magnets 643a and 643b of the power transmitting device have been attached, repulsive force (e.g., S-S or N-N) and attractive force (e.g., N-S or S-N) may repeatedly occur. Accordingly, as in the graph 1260 shown by reference numeral <1250>, the pulling force between the power transmitting device 530 and the power receiving device 520 according to the rotation angle 1265 (e.g., about 12.9 degrees) may be large.

In the arrangement 1240 of the plurality of magnets 473ab, 643a, 643b, 643ba, 643bb included in the power receiving device 520 and the power transmitting device 530 according to the present disclosure, as shown by reference numeral <1210> of fig. 12, each of the plurality of magnets 473a included in the power receiving device 520 and the plurality of magnets 643a and 643b included in the power transmitting device 530 may form a magnetic force in a different direction. In an embodiment, the plurality of magnets may form a slit 1243 (e.g., slit 635 in fig. 6b or 6 c) therebetween, and may be separated at intervals of a specified angle (e.g., about 22.5 degrees) and attached by a specified number of intervals (e.g., 16 intervals).

In the embodiment, in the case of the arrangement 1240 according to the present disclosure, when the rotation 1241 occurs in a state in which the magnet 473a of the power receiving device 520 and the magnets 643a and 643b of the power transmitting device 530 have been attached, as in the curve 1280 shown by reference numeral <1250>, the tensile force between the power transmitting device 530 and the power receiving device 520 according to the rotation angle 1285 (for example, about 22.5 degrees) may be small. When the rotation 1241 occurs in a state where the magnet 473a of the power receiving device 520 and the magnets 643a and 643b of the power transmitting device 530 have been attached, magnetic forces are formed in different directions. Accordingly, the power transmission device 530 and the power reception device 520 can be prevented from being separated because a stable tensile force is formed between the power transmission device 530 and the power reception device 520 in the vertical direction (for example, the z-axis direction). Further, since the pulling force of the magnetic force formed in the outward direction (for example, the x-axis direction) of the power receiving device 520 (or the power transmitting device 530) is changed during the rotation 1241, a pulling feeling can be formed.

In various embodiments, a plurality of magnets may form a slit 1243 therebetween, and may be separated and attached to 16 intervals at intervals of about 22.5 degrees. Due to this structure, a constant angle (e.g., 0 degrees, 45 degrees, 90 degrees … …) can be maintained in a state in which the power transmission device 530 has been attached to the power reception device 520, and a sense of poking can be formed even without additional components in the power reception device 520. The number of the plurality of magnets and/or the angle at which the plurality of magnets are provided according to various embodiments are for convenience of description of the embodiments, and the present disclosure is not limited to this embodiment.

Fig. 13a and 13b are diagrams 1300 and 1350 showing changes in pulling force and magnetic field disturbance amount according to the length of each of a plurality of magnets included in the power transmission device 530 according to various embodiments.

Referring to fig. 13a, a first magnet (e.g., first magnet 643a in fig. 8) disposed adjacent to a coil antenna (e.g., coil antenna 640 in fig. 6 d) of a power transmission device (e.g., power transmission device 530 in fig. 5) may include a (1-1) th magnet 643aa and a (1-2) th magnet 643ab. The (1-1) th magnet 643aa of the first magnet 643a may be disposed adjacent to the outermost coil of the coil antenna 640. A region 643ac (e.g., a non-magnetized region) in which a magnet is not disposed may be included between the first magnet 643a and the (1-2) th magnet 643ab.

In an embodiment, the width of the first magnet 643a of the power transmission device 530 may have a first length 1311. The width of the (1-1) th magnet 643aa and the width of the (1-2) th magnet 643ab of the first magnet 643a may each have a second length 1313 that is less than the first length 1311.

Fig. 13b illustrates a graph showing an amount of magnetic field interference generated from a second shielding sheet 820 (e.g., the second shielding sheet 820 in fig. 8) of the power transmission device 530 along a line A-A' of fig. 6d, according to various embodiments.

Referring to fig. 13b, in the graph shown by reference numeral <1360>, the x-axis may indicate a length 1361 of the second shielding sheet 820 of the power transmission device 530, and the y-axis may indicate a magnetic field interference amount 1363 of the second shielding sheet 820 of the power transmission device 530.

As shown by reference numeral <1360>, it can be seen that the width of the (1-1) th magnet 643aa and the width of the (1-2) th magnet 643ab in the x-direction (see fig. 13 a) each become smaller, and the amount of magnetic field interference generated from the second shield plate 820 of the power transmission device 530 becomes smaller as in the curve <1377> (e.g., about 0.5 millimeters (mm) in width), the curve <1375> (e.g., about 1.0 mm), the curve <1373> (e.g., about 1.5 mm), and the curve <1371> (e.g., about 2.0 mm).

In the embodiment, if the width of the (1-1) th magnet 643aa and the width of the (1-2) th magnet 643ab each become smaller, this may mean that the width of the region 643ac in which no magnet is provided becomes larger. In other words, as the width of the region 643ac in which the magnet is not disposed becomes larger, the amount of magnetic field interference generated from the second shielding sheet 820 of the power transmission device 530 may become smaller.

In an embodiment, in the diagram shown by reference numeral <1380>, the x-axis may indicate the length 1381 of the magnet (e.g., the width of the (1-1) th magnet 643aa and the (1-2) th magnet 643ab of the first magnet 643 a), and the y-axis may indicate the tension 1383 and inductance 1385 (units: microhenry (μh)) between the power receiving device 520 and the power transmitting device 530.

In an embodiment, it can be seen that as the width of the (1-1) th magnet 643aa and the length 1381 of the width of the (1-2) th magnet 643ab become smaller, the tension 1383 between the power receiving device 520 and the power transmitting device 530 becomes larger, as shown in the curve 1395.

In an embodiment, as shown by curves 1391 and 1393, as the width of the (1-1) th magnet 643aa and the length 1381 of the width of the (1-2) th magnet 643ab become smaller, the inductance 1385 of the power receiving device 520 and the inductance 1385 of the power transmitting device 530 may become larger.

As described with reference to fig. 13a and 13b according to various embodiments, the width of the (1-1) th magnet 643aa and the length 1381 of the width of the (1-2) th magnet 643ab may be configured to become smaller as the tension 1383 between the power transmission device 530 and the power reception device 520 becomes larger and the inductance 1385 of the power reception device 520 and the inductance 1385 of the power transmission device 530 become larger, so that the charging efficiency may be improved.

Fig. 14a and 14b are diagrams 1400 and 1450 showing changes in the amount of tensile force and magnetic field disturbance according to rotation (e.g., rotation of the power receiving device 520 or rotation of the power transmitting device 530) in a state in which the power receiving device 520 and the power transmitting device 530 have been in contact (or attached) with each other, according to various embodiments.

Constituent elements of the power receiving apparatus (e.g., the power receiving apparatus 520 in fig. 5) and the power transmitting apparatus (e.g., the power transmitting apparatus 530 in fig. 5) shown in fig. 14a according to various embodiments are the same as those of the power receiving apparatus 520 and the power transmitting apparatus 530 shown in fig. 13a, and detailed descriptions thereof may be omitted.

Referring to fig. 14a, in a state in which the power receiving device 520 and the power transmitting device 530 have been in contact (or attached) with each other, the rotation angle 1421 may be changed (e.g., from about 40 degrees to 90 degrees) due to the rotation of the power transmitting device 530.

Fig. 14b is a graph 1450 illustrating a change in a tensile force between the power receiving device 520 and the power transmitting device 530, which is measured based on rotation of the power transmitting device 530, and an amount of magnetic field interference generated from the second shielding sheet 820 of the power transmitting device 530 in a state where the width of the (1-1) th magnet 643aa and the width of the (1-2) th magnet 643ab have a length of about 1.5mm, according to various embodiments.

Referring to fig. 14b, in the graph shown by reference numeral <1460>, the x-axis may indicate the length 1461 of the second shielding sheet 820 of the power transmission device 530, and the y-axis may indicate the magnetic field interference amount 1463 of the second shielding sheet 820.

In an embodiment, it can be seen that as the rotation angle 1421 of the power transmission device 530 increases, the amount of magnetic field interference generated from the second shielding sheet 820 of the power transmission device 530 becomes smaller, as shown in curve <1477> (e.g., about 45 degrees), curve <1475> (e.g., about 60 degrees), curve <1473> (e.g., about 75 degrees), and curve <1471> (e.g., about 90 degrees).

In an embodiment, in the diagram shown by reference numeral <1480>, the x-axis may indicate the length 1481 of the magnet (e.g., the width of the (1-1) th magnet 643aa and the (1-2) th magnet 643ab of the first magnet 643 a) and the y-axis may indicate the pull force 1483 and the inductance 1485 between the power receiving device 520 and the power transmitting device 530.

In the embodiment, as in the curves <1491> and <1493>, as the rotation angle 1421 of the power transmission device 530 increases, the inductance 1485 of the power reception device 520 and the inductance 1485 of the power transmission device 530 may become larger.

In an embodiment, it can be seen that as the rotation angle 1421 of the power transmission device 530 increases, the tension 1483 between the power transmission device 530 and the power reception device 520 becomes greater, as shown in the curve 1495.

Fig. 15a and 15b are diagrams 1500 and 1550 showing changes in pulling force and magnetic field disturbance amount according to the length of each of a plurality of magnets included in the power transmission device 530 according to various embodiments.

Referring to fig. 15a, as shown by reference numerals <1510> and <1520>, a first magnet (e.g., first magnet 643a in fig. 8) disposed adjacent to a coil antenna (e.g., coil antenna 640 in fig. 6 d) of a power transmission device (e.g., power transmission device 530 in fig. 5) may include a (1-1) th magnet 643aa and a (1-2) th magnet 643ab. The (1-1) th magnet 643aa of the first magnet 643a may be disposed adjacent to the outermost coil of the coil antenna 640. A region 643ac (e.g., a non-magnetized region) in which a magnet is not disposed may be included between the first magnet 643a and the (1-2) th magnet 643ab.

In various embodiments, the width of the first magnet 643a of the power transmission device 530 shown by reference numeral <1510> may have a first length 1311. The width of the (1-1) th magnet 643aa and the width of the (1-2) th magnet 643ab of the first magnet 643a may have a second length 1313 that is less than the first length.

In various embodiments, the width of the first magnet 643a of the power transmission device 530 shown by reference numeral <1520> may have a third length 1511 that is less than the first length 1311 and greater than the second length 1313. The width of the (1-1) th magnet 643aa and the width of the (1-2) th magnet 643ab of the first magnet 643a may have a fourth length 1522 that is less than the third length 1511.

In various embodiments, the reference numeral <1520> may be a graph in which the inner diameter of the first magnet 643a of the power transmission device 530 is the same as the inner diameter of the first magnet 473a of the power reception device 520, as compared to the reference numeral <1510 >. For example, if the inner diameter of the first magnet 643a of the power transmission device 530 and the inner diameter of the first magnet 473a of the power reception device 520 are the same as each other, this may mean that one surface 1526 of the first magnet 643a of the power transmission device 530 and one surface 1528 of the first magnet 473a of the power reception device 520 are disposed on the same line based on the line 1525.

Fig. 15b is a graph 1550 showing changes in the amount of magnetic field interference between the power receiving device 520 and the power transmitting device 530 and the second shielding sheet (e.g., the second shielding sheet 820 in fig. 8) of the power transmitting device 530 measured in the structure 1300 in fig. 13a and the structures of reference numerals <1510> and <1520> of fig. 15a, according to various embodiments.

Referring to fig. 15b, in the curve shown by reference numeral <1560>, the x-axis may indicate the length 1561 of the second shielding sheet 820 of the power transmission device 530 and the y-axis may indicate the magnetic field interference amount 1563 of the second shielding sheet 820 of the power transmission device 530.

In an embodiment, curve 1571 indicates an amount of magnetic field interference generated from second shielding sheet 820 of power transmission device 530 in structure 1300 in fig. 13 a. Curve 1573 indicates an amount of magnetic field interference generated from the second shielding sheet 820 of the power transmission device 530 in the structure of reference numeral <1510> of fig. 15 a. Curve 1575 indicates an amount of magnetic field interference generated from the second shielding sheet 820 of the power transmission device 530 in the structure of reference numeral <1520> of fig. 15 a.

As in the curve 1575 of the structure according to reference numeral <1520> of fig. 15a in the above-described structure, it can be seen that the amount of magnetic field interference generated from the second shielding sheet 820 of the power transmission device 530 is small. In other words, if the inner diameter of the first magnet 643a of the power transmission device 530 is made the same as the inner diameter of the first magnet 473a of the power reception device 520, the charging efficiency can be improved because the magnetic force introduced into the second shielding piece 820 of the power transmission device 530 becomes smaller.

In an embodiment, the graph shown by reference numeral <1580> shows the tension 1581 and inductance 1583 between the power receiving device 520 and the power transmitting device 530 in the structure 1300 in fig. 13a and the structures of reference numerals <1510> and <1520> in fig. 15 a.

In the embodiment, as in the curves <1591> and <1593>, it can be seen that in the structure of the reference numeral <1520> of fig. 15a among the foregoing structures, the inductance 1485 of the power receiving device 520 and the inductance 1583 of the power transmitting device 530 become larger.

In the embodiment, as in the curve 1595, it can be seen that in the structure of the reference numeral <1520> of fig. 15a in the foregoing structure, the tensile force 1581 between the power transmission device 530 and the power reception device 520 becomes larger.

In other words, if the inner diameter of the first magnet 643a of the power transmission device 530 is made the same as the inner diameter of the first magnet 473a of the power reception device 520, the charging efficiency can be improved because not only the tensile force 1581 between the power transmission device 530 and the power reception device 520, but also the inductance 1485 of the power reception device 520 and the inductance 1583 of the power transmission device 530 become larger.

Fig. 16 is a diagram 1600 illustrating radiation patterns according to the structures of fig. 13a and 15a, according to various embodiments.

In an embodiment, reference numeral <1610> shows the radiation pattern in structure 1300 in fig. 13a, reference numeral <1630> shows the radiation pattern in the structure of reference numeral <1510> of fig. 15a, and reference numeral <1650> shows the radiation pattern in the structure of reference numeral <1520> of fig. 15 a.

In various embodiments, the red region (i.e., the light color of the black-and-white version) shows that the magnetic force is formed in a first direction (e.g., -z-axis direction), while the blue region (i.e., the dark color of the black-and-white version) shows that the magnetic force is formed in a second direction (e.g., z-axis direction) (i.e., the direction opposite the first direction).

As shown by the structures of reference numerals <1610>, <1630> and <1650> and reference numerals <1510> and <1520> of the various embodiments of the structure 1300 in fig. 13a, the magnetic force in the first shielding sheet (e.g., the first shielding sheet 810 in fig. 8) introduced to the power receiving device (e.g., the power receiving device 520 in fig. 5) and the second shielding sheet (e.g., the second shielding sheet 820 in fig. 8) of the power transmitting device (e.g., the power transmitting device 530 in fig. 5) may become smaller, and may also be prevented from inducing magnetic force in the outward direction (e.g., -x-axis direction) of the power receiving device 520 (and/or the power transmitting device 530). Accordingly, the coil antenna 470 of the power receiving device 520 and the coil antenna 640 of the power transmitting device 530 may be disposed in alignment with each other. Since the coil antenna 470 of the power receiving device 520 and the coil antenna 640 of the power transmitting device 530 are disposed in alignment with each other, charging efficiency can be improved.

The power receiving apparatus 520 according to various embodiments may include: a housing (e.g., housing 310 in fig. 3 a) comprising a first surface (e.g., first surface 310A in fig. 3 a) facing a first direction (e.g., z-axis direction), a second surface (e.g., second surface 310B in fig. 3B) facing a second direction opposite the first direction (e.g., z-axis direction), and a side surface (e.g., side surface 310C in fig. 3 a) surrounding a space between first surface 310A and second surface 310B; a coil antenna (e.g., coil antenna 470 in fig. 6a, 6b, or 6 c) disposed in the inner space of the housing 310, configured to wirelessly receive power from the power transmission device 530, and wound in a circular shape; a shielding sheet (e.g., a first shielding sheet 810 in fig. 8) disposed above the coil antenna 470; and a first magnet (e.g., 473aa or 473ba in fig. 8) and a second magnet (e.g., 473ab or 473bb in fig. 8) adjacent to and disposed spaced apart from the outermost coil of the coil antenna 470. The first magnet 473aa or 473ba may be disposed such that a portion of the magnetic force induced by the first magnet 473aa or 473ba is formed in a first direction (e.g., a z-axis direction), and the second magnet 473ab or 473bb may be coupled with the first magnet 473aa or 473ba, and may be disposed such that a portion of the magnetic force induced by the second magnet 473ab or 473bb is formed in a third direction (i.e., a specific direction perpendicular to the z-axis direction, such as an-x-axis direction, an x-axis direction, a y-axis direction, or an-y-axis direction), that is, an outward direction from the center of the coil antenna 470.

In various embodiments, the first magnet 473aa or 473ba may be provided in plurality. The second magnet 473ab or 473bb may be provided in plurality. Slits (e.g., slits 635 in fig. 6 b) may be formed between adjacent ones of the plurality of second magnets.

In various embodiments, when the power transmission device 530 is attached to the power reception device 520, the coil antenna 470 of the power reception device 520 and the coil antenna (e.g., the coil antenna 640 in fig. 6 d) of the power transmission device 530 may be disposed in alignment with each other due to coupling between the plurality of first magnets and the plurality of second magnets of the power reception device 520 and the plurality of third magnets and the plurality of fourth magnets of the power transmission device 530.

In various embodiments, the second magnet 473ab or 473bb may be rectangular in shape (e.g., the shape in fig. 6a and 6 b) or trapezoidal in shape (e.g., the shape in fig. 6 c).

In various embodiments, the second magnet 473ab or 473bb may be arranged such that a portion of the magnetic force induced by the second magnet 473ab or 473bb is formed in a fourth direction (e.g., a direction between the-x-axis and the-z-axis or a direction between the x-axis and the-z-axis), i.e., a direction between the second direction and the third direction.

The power receiving device 520 according to various embodiments may further include a third magnet (e.g., a third magnet 473bc in reference numeral <970> of fig. 9) coupled with the second magnet 473ab or 473bb and arranged such that a portion of the magnetic force induced by the third magnet is formed in the second direction (e.g., -z-axis direction).

In various embodiments, the second magnet 473ab or 473bb may be disposed a specified distance apart from the first magnet 473aa or 473ba in a third direction (e.g., a particular direction perpendicular to the z-axis direction, e.g., -x-axis direction, y-axis direction, or-y-axis direction). The first and second magnets 473ab or 473bb may have a non-magnetized region (not shown) therebetween.

The power receiving device 520 according to various embodiments may further include at least one shielding material (not shown) disposed on one surface of the first magnet 473aa or 473ba and/or the second magnet 473ab or 473bb and for guiding the magnetic force.

In various embodiments, since at least one shielding material (not shown) for guiding the magnetic force is provided on one surface of the first magnet 473aa or 473ba and/or the second magnet 473ab or 473bb, it is possible to prevent the magnetic force from being induced in the outward direction of the power receiving device 520.

In various embodiments, at least one shielding material (not shown) may be formed of a steel plate.

The power transmission apparatus 530 according to various embodiments may include: a housing (e.g., housing 535 in fig. 6 d) including a first surface (e.g., first surface 535A in fig. 6 d) facing a first direction (e.g., z-axis direction), a second surface (e.g., second surface 535B in fig. 6 d) facing a second direction (e.g., z-axis direction) opposite the first direction, and a side surface (e.g., side surface 535C in fig. 6 d) surrounding a space between the first surface and the second surface; a coil antenna 640 provided in an inner space of the housing 535, configured to wirelessly transmit power to the power receiving device 520, and wound in a circular shape; a shielding sheet (e.g., a second shielding sheet 820 in fig. 8) disposed under the coil antenna 640; and a first magnet (e.g., 643aa or 643ba in fig. 8) and a second magnet (e.g., 643ab or 643bb in fig. 8) adjacent to and disposed spaced apart from the outermost coil of coil antenna 640. The first magnet 643aa or 643ba may be disposed such that a portion of the magnetic force induced by the first magnet 643aa or 643ba is formed in a first direction (e.g., a z-axis direction). The second magnet 643ab or 643bb may be coupled with the first magnet 643aa or 643ba in a third direction (i.e., a specific direction perpendicular to the z-axis direction, for example, an x-axis direction, -an x-axis direction, a y-axis direction, or a-y-axis direction) (i.e., an outward direction from the center of the coil antenna 640), and may be disposed such that a portion of the magnetic force induced by the second magnet 643ab or 643bb is formed in a fourth direction (i.e., -an x-axis direction, -a y-axis direction, or a y-axis direction) opposite to the third direction.

In various embodiments, the first magnet 643aa or 643ba may be provided in plurality, the second magnet 643ab or 643bb may be provided in plurality, and a slit (not shown) may be formed between adjacent second magnets of the plurality of second magnets.

In various embodiments, when the power receiving device 520 is attached to the power transmitting device 530, the coil antenna 640 of the power transmitting device 530 and the coil antenna 470 of the power receiving device 520 may be disposed in alignment with each other due to coupling between the plurality of first magnets and the plurality of second magnets of the power transmitting device 530 and the plurality of third magnets and the plurality of fourth magnets of the power receiving device 520.

In various embodiments, the second magnet 643ab or 643bb may be rectangular in shape or trapezoidal in shape.

In various embodiments, the second magnet 643ab or 643bb may be disposed such that a portion of the magnetic force induced by the second magnet is formed in a fifth direction (e.g., a direction between the x-axis and the-z axis or a direction between the-x-axis and the-z axis) (i.e., a direction between the second direction and the fourth direction).

The power transmission device 530 according to various embodiments may further include a third magnet (e.g., a third magnet 643bc in reference numeral <970> of fig. 9) coupled with the second magnet 643ab or 643bb and disposed such that a portion of the magnetic force induced by the third magnet is formed in a second direction (e.g., -z-axis direction).

In various embodiments, the second magnet 643ab or 643bb may be disposed a specified distance apart from the first magnet 643aa or 643ba in a third direction (e.g., an x-axis direction or a-x-axis direction). The first magnet 643aa or 643ba and the second magnet 643ab or 643bb may have a non-magnetized region therebetween (e.g., non-magnetized region 643bd in reference numeral <990> of fig. 9).

The power transmission device 530 according to various embodiments may further include at least one shielding material (e.g., shielding materials 911 and 951 in reference numerals <910> and <950> of fig. 9) provided on one surface of the first magnet 643aa or 643ba and/or the second magnet 643ab or 643bb and for guiding a magnetic force.

In various embodiments, since at least one shielding material 911, 951 for guiding a magnetic force is provided on one surface of the first magnet 643aa or 643ba and/or the second magnet 643ab or 643bb, it is possible to prevent the magnetic force from being induced in an outward direction of the power transmission device 530.

In various embodiments, at least one shielding material 911, 951 may be formed from a steel sheet.

The various embodiments disclosed in the specification and drawings are given only specific examples in order to easily describe the technical content of the present disclosure and to aid in understanding the present disclosure, but are not intended to limit the scope of the present disclosure. Therefore, all changes or modifications derived based on the technical spirit of the present disclosure should be construed as being included in the scope of the present disclosure, except for the embodiments disclosed herein.

Claims

1. A power receiving apparatus, the power receiving apparatus comprising:

a housing, the housing comprising: a first surface facing a first direction, a second surface facing a second direction opposite to the first direction, and a side surface surrounding a space between the first surface and the second surface;

a coil antenna provided in an inner space of the housing, configured to wirelessly receive power from a power transmission device, and wound in a circular shape;

a shielding sheet disposed above the coil antenna; and

a first magnet and a second magnet adjacent to and disposed spaced apart from an outermost coil of the coil antenna,

wherein the first magnet is arranged such that a portion of the magnetic force induced by the first magnet is formed in the first direction, and

the second magnet is coupled with the first magnet in a third direction, the third direction being an outward direction from a center of the coil antenna, and the second magnet is disposed such that a part of a magnetic force induced by the second magnet is formed in the third direction.

2. The power receiving device according to claim 1,

wherein the first magnet is provided in plurality,

wherein the second magnet is provided in plurality, and

wherein a slit is formed between adjacent ones of the plurality of second magnets.

3. The power receiving device according to claim 2, wherein the coil antenna of the power receiving device and the coil antenna of the power transmitting device are disposed in alignment with each other due to coupling between the plurality of first magnets and the plurality of second magnets of the power receiving device and the plurality of third magnets and the plurality of fourth magnets of the power transmitting device, based on attaching the power transmitting device to the power receiving device.

4. The power receiving device according to claim 1, wherein the second magnet is rectangular in shape or trapezoidal in shape.

5. The power receiving device according to claim 1, wherein the second magnet is provided such that a part of the magnetic force induced by the second magnet is formed in a fourth direction that is a direction between the second direction and the third direction.

6. The power receiving device according to claim 1, further comprising a third magnet coupled with the second magnet and arranged such that a part of a magnetic force induced by the third magnet is formed in the second direction.

7. The power receiving device according to claim 1,

wherein the second magnet is disposed to be spaced apart from the first magnet by a prescribed distance in the third direction, and

wherein a non-magnetized region is provided between the first magnet and the second magnet.

8. The power receiving device according to claim 1, further comprising at least one shielding material provided on one surface of the first magnet and/or the second magnet and for guiding a magnetic force,

wherein, since the at least one shielding material for guiding the magnetic force is provided on one surface of the first magnet and/or the second magnet, the magnetic force is prevented from being induced in an outward direction of the power receiving device, and

wherein the at least one shielding material is formed of a steel plate.

9. A power transmission apparatus, the power transmission apparatus comprising:

A coil antenna provided in an inner space of the housing, configured to wirelessly transmit power to a power receiving device, and wound in a circular shape;

a shielding sheet disposed below the coil antenna; and

the second magnet is coupled with the first magnet in a third direction, the third direction being an outward direction from a center of the coil antenna, and the second magnet is disposed such that a portion of a magnetic force induced by the second magnet is formed in a fourth direction opposite to the third direction.

10. The power transmission device according to claim 9,

wherein the first magnet is provided in plurality,

wherein the second magnet is provided in plurality,

wherein a slit is formed between adjacent second magnets of the plurality of second magnets, and

Wherein the coil antenna of the power transmission device and the coil antenna of the power reception device are disposed in alignment with each other due to coupling between the plurality of first magnets and the plurality of second magnets of the power transmission device and the plurality of third magnets and the plurality of fourth magnets of the power reception device, based on the power reception device being attached to the power transmission device.

11. The power transmission device according to claim 9, wherein the second magnet is rectangular or trapezoidal in shape.

12. The power transmission device according to claim 9, wherein the second magnet is provided such that a part of the magnetic force induced by the second magnet is formed in a fifth direction, the fifth direction being a direction between the second direction and the fourth direction.

13. The power transmission device according to claim 9, further comprising a third magnet coupled with the second magnet and arranged such that a part of a magnetic force induced by the third magnet is formed in the second direction.

14. The power transmission device according to claim 9,

15. The power transmission device according to claim 9, further comprising at least one shielding material provided on one surface of the first magnet and/or the second magnet and for guiding a magnetic force,

wherein, since the at least one shielding material for guiding the magnetic force is provided on one surface of the first magnet and/or the second magnet, the magnetic force is prevented from being induced in an outward direction of the power transmission device, and

wherein the at least one shielding material is formed of a steel plate.