WO2022169023A1

WO2022169023A1 - Electronic device for adjusting power in wireless charging and method for operating the electronic device

Info

Publication number: WO2022169023A1
Application number: PCT/KR2021/003578
Authority: WO
Inventors: Sangwoo NA
Original assignee: Samsung Electronics Co., Ltd.
Priority date: 2021-02-04
Filing date: 2021-03-23
Publication date: 2022-08-11
Also published as: KR20220112611A

Abstract

According to various embodiments, an electronic device may include a battery, at least one sensor, a wireless charging circuit providing power to an external electronic device, and at least one processor, in which the at least one processor is configured to identify a first posture of the electronic device based on a sensing value identified from the at least one sensor, detect an external electronic device corresponding to a charging target, identify whether the first posture is maintained, in response to detection of the external electronic device, and control the wireless charging circuit to provide a second power higher than a first power based on predefined wireless charging standards to the external electronic device while the first posture is maintained. Other various embodiments may also be provided.

Description

ELECTRONIC DEVICE FOR ADJUSTING POWER IN WIRELESS CHARGING AND METHOD FOR OPERATING THE ELECTRONIC DEVICE

Various embodiments of the disclosure relate to an electronic device for adjusting power in wireless charging and a method for operating the electronic device.

With the development of wireless charging technology, methods for charging various electronic devices by supplying power to the electronic devices from one charging device have been studied. For example, in addition to a scheme to automatically charge a battery by merely placing an electronic device on a charging pad without connecting the electronic device to a separate charging connector, a method for charging an accessory device by using an electronic device such as a smartphone has been researched.

Wireless charging may include a magnetic inductive scheme, a magnetic resonant scheme, and an electromagnetic scheme. The magnetic inductive scheme or the magnetic resonant scheme is useful for charging an electronic device located in a short range from a wireless power transmission device. The electromagnetic scheme may be favorable to long-range power transmission covering several meters when compared to the magnetic inductive scheme or the magnetic resonant scheme. Such an electromagnetic scheme is primarily used for remote power transmission and may exactly grasp the location of remote power receivers and deliver power in a most efficient way.

The electronic device needs to satisfy certain control conditions for radio waves. For example, to reduce the exposure of a human body to electromagnetic waves generated in a wireless charging condition, it is necessary to limit a degree to which the human body is exposed to the electromagnetic waves when an electronic device that emits power for wireless charging approaches the human body.

To estimate an influence of the electromagnetic waves upon the human body, a maximum permissible exposure (MPE) method and a specific absorption rate (SAR) method may be used, in which the MPE method performs measurement in a mobile device usually used at a specific or longer distance from the human body and the SAR method usually performs measurement in a portable device used closely to the human body. A permissible value of the electromagnetic waves, which is related to the MPE method, is defined by the Federal Communications Commission (FCC). In addition, numerous countries have imposed restraints to satisfy criteria for SAR that is an index indicating an absorption rate of electromagnetic waves with respect to human bodies.

Manufacturers of electronic devices have set transmission of different charging powers for different types of charging devices to satisfy certain control conditions. To reduce the exposure of electromagnetic waves generated in a wireless charging condition to human bodies, the output of an electronic device especially used closely to a human body is limited. As such, stricter regulations have been applied to a case where an accessory device is charged using an electronic device such as a smartphone than a case where an electronic device is charged in a state of being placed on a charging pad in wireless charging, e.g., the electronic device is charged using a wireless charger that performs charging in a state of being fixed to a table. The output needs to be raised to improve charging efficiency; however, it may be difficult to simultaneously satisfy the charging efficiency and the output restraints due to strict regulations on the electronic device used closely to the human bodies.

Various embodiments disclosed herein provide an electronic device for adjusting power and an operating method of the electronic device to limit the exposure degree of human bodies to the electromagnetic waves while improving charging efficiency in wireless charging.

According to various embodiments, an electronic device may include a battery, at least one sensor, a wireless charging circuit providing power to an external electronic device, and at least one processor, in which the at least one processor is configured to identify a first posture of the electronic device based on a sensing value identified from the at least one sensor, detect an external electronic device corresponding to a charging target, identify whether the first posture is maintained, in response to detection of the external electronic device, and control the wireless charging circuit to provide a second power higher than a first power based on predefined wireless charging standards to the external electronic device while the first posture is maintained.

According to various embodiments, a method for adjusting a power in wireless charging by an electronic device includes identifying a first posture of the electronic device based on a sensing value identified from at least one sensor, detecting an external electronic device corresponding to a charging target, identifying whether the first posture is maintained, in response to detection of the external electronic device, and providing a second power higher than a first power based on predefined wireless charging standards to the external electronic device while the first posture is maintained.

According to various embodiments, by adjusting power for charging in wireless charging, the exposure degree of human bodies to electromagnetic waves may be reduced while improving charging efficiency.

According to various embodiments, in wireless charging, when the posture of an electronic device is not changed, charging may be performed by increasing transmission power to improve the charging efficiency; when the posture of the electronic device is changed by a user, the transmission power may be lowered to reduce an influence of the electromagnetic waves on the human bodies.

In addition, effects obtainable in the disclosure are not limited to the effects as described above, and other effects not described above will become apparent to those skilled in the art from the following detailed description.

FIG. 1 is a block diagram of an electronic device in a network environment, according to various embodiments;

FIG. 2A is a view for describing wireless charging between a charging pad and an electronic device, according to various embodiments;

FIG. 2B is a view for describing wireless charging between an electronic device and an external electronic device, according to various embodiments;

FIG. 3A is a view for describing radio frequency (RF) exposure in wireless charging between an electronic device and an external electronic device, according to various embodiments;

FIG. 3B is a view for describing RF exposure with respect to power adjustment in wireless charging between an electronic device and an external electronic device, according to various embodiments;

FIG. 4 is an internal block diagram of an electronic device for wireless charging with an external electronic device, according to various embodiments;

FIG. 5 is a block diagram of a wireless charging circuit for an electronic device and an external electronic device, according to various embodiments;

FIG. 6 is an operation flowchart of an electronic device to adjust power in wireless charging, according to various embodiments;

FIG. 7 is an operation flowchart of an electronic device to change a charging scheme with respect to a posture of the electronic device, according to various embodiments;

FIG. 8 is a view for describing a charging scheme with respect to a first posture of an electronic device, according to various embodiments;

FIG. 9 is a view for describing a charging scheme with respect to a second posture of an electronic device, according to various embodiments; and

FIG. 10 is a view for describing a charging scheme with respect to a third posture of an electronic device, according to various embodiments.

With regard to the description of the drawings, similar reference numerals may be used to refer to similar or related components.

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

The processor 120 may execute, for example, software (e.g., a program 140) to control at least one other component (e.g., a hardware or software component) of the electronic device 101 coupled with the processor 120, and may perform various data processing or computation. According to an embodiment, as at least part of the data processing or computation, the processor 120 may store a command or data received from another component (e.g., the sensor module 176 or the communication module 190) in volatile memory 132, process the command or the data stored in the volatile memory 132, and store resulting data in 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)), and 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 operable independently from, or in conjunction with, the main processor 121. For example, when the electronic device 101 include the main processor 121 and the auxiliary processor 123, the auxiliary processor 123 may use lower power than the main processor 121 or may be configured to be specialized for a designated function. The auxiliary processor 123 may be implemented as separate from, or as part of the main processor 121.

The auxiliary processor 123 may control at least some of functions or states related to at least one component (e.g., the display module 160, the sensor module 176, or the communication module 190) among the components of the electronic device 101, instead of the main processor 121 while the main processor 121 is in an inactive state (e.g., sleeps), or together with the main processor 121 while the main processor 121 is in an active state (e.g., executes 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 a hardware structure specialized for processing of an artificial intelligence (AI) model. The AI model may be generated through machine learning. Such learning may be performed in the electronic device 101 in which the AI model is executed, or may be performed by a separate server (e.g., the server 108). Examples of a learning algorithm may include, but may not be limited to, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning. The AI model may include a plurality of artificial neural network layers. Examples of the artificial neural network may include, but may not be limited to, a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted Boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), and a deep Q-network, or one of combinations of two or more of them. The AI model may additionally or alternatively include a software structure as well as the hardware structure.

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

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

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

The sound output module 155 may output sound signals to the outside of the electronic device 101. The sound output module 155 may include, for example, a speaker or a receiver. The speaker may be used for general purposes, such as playing multimedia or playing record. The receiver may be used to receive incoming calls. According to an embodiment, the receiver may be implemented as separate from, or as part of the speaker.

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

The audio module 170 may convert a sound into an electrical signal or vice versa. According to an embodiment, the audio module 170 may obtain the sound via the input module 150, or output the sound via the sound output module 155 or a headphone of an external electronic device (e.g., the electronic device 102) directly (e.g., wiredly) or wirelessly coupled with 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 gyro sensor, an atmospheric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an infrared (IR) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

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

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

The haptic module 179 may convert an electrical signal into a mechanical stimulus (e.g., a vibration or motion) or electrical stimulus which may be recognized by a user via his tactile sensation or kinesthetic sensation. According to an embodiment, the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electric stimulator.

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

The power management module 188 may manage power supplied 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).

The battery 189 may supply power to at least one component of the electronic device 101. According to an embodiment, the battery 189 may include, for example, a primary cell which is not rechargeable, a secondary cell which is rechargeable, 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 the 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 that are operable independently from the processor 120 (e.g., the application processor (AP)) and supports a direct (e.g., wired) communication or a 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 corresponding one of these communication modules may communicate with the external electronic device 104 via a first network 198 (e.g., a short-range communication network, such as Bluetooth^TM, 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 legacy cellular network, a 5^th-generation (5G) network, a next-generation communication network, the Internet, or a computer network (e.g., LAN or wide area network (WAN)). These various types of communication modules may be integrated into a single component (e.g., a single chip), or may be implemented as a plurality of components (e.g., a plurality of chips) separate from each other. The wireless communication module 192 may identify or authenticate the electronic device 101 in a communication network, such as the first network 198 or the second network 199, using subscriber information (e.g., international mobile subscriber identity (IMSI)) stored in the subscriber identification module 196.

The wireless communication network 192 may support the 5G network after a 4^th-generation (4G) network and a next-generation communication technology (e.g., a new radio (NR) access technology). The NR access technology may support high-speed transmission of high-volume data (enhanced mobile broadband (eMBB)), terminal power minimization and access of multiple terminals (massive machine type communications (mMTC)), or high reliability and low latency (ultra-reliable and low-latency communications (URLLC)). The wireless communication module 192 may support high-frequency bands (e.g., a millimeter waves (mmWave) band) to achieve a high data rate. The wireless communication module 192 may support various techniques for securing performance in a high-frequency band, e.g., beamforming, massive multiple-input and multiple-output (MIMO), full dimensional (FD)-MIMO, array antenna, analog beam-forming, or large-scale antenna. The wireless communication module 192 may support various requirements specified in the electronic device 101, the external electronic device (e.g., the electronic device 104), or a network system (e.g., the second network 199). According to an embodiment, the wireless communication module 192 may support a peak data rate (e.g., 20 Gbps or higher) for implementing eMBB, a loss coverage (e.g., 164 dB or less) for implementing mMTC, or U-plane latency (e.g., a downlink (DL) and an uplink (UL), each of which is less than or equal to 0.5 ms, or a round trip of 1 ms or less) for implementing URLLC.

The antenna module 197 may transmit or receive a signal or power to or from the outside (e.g., the 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 a conductive pattern formed on a substrate (e.g., a printed circuit board (PCB)). According to an embodiment, the antenna module 197 may include a plurality of antennas (e.g., array antennas). In such a case, at least one antenna appropriate for a communication scheme used in the communication network, such as the first network 198 or the second network 199, may be selected, for example, by the communication module 190 from the plurality of antennas. The signal or the 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 some embodiment, another component (e.g., a radio frequency integrated circuit (RFIC)) other than the radiating element may be additionally formed as part of the antenna module 197.

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

At least some of the above-described components may be coupled mutually and communicate signals (e.g., commands or data) therebetween via an inter-peripheral communication scheme (e.g., a bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)).

According to an embodiment, commands or data may be transmitted or received between the electronic device 101 and the external electronic device 104 via the server 108 coupled with the second network 199. Each of the external

electronic devices

102 or 104 may be a device of a same type as, or a different type, from the electronic device 101. According to an embodiment, all or some of operations to be executed at the electronic device 101 may be executed at one or more of the external

electronic devices

102, 104, and 108. For example, when the electronic device 101 should perform a function or a service automatically, or in response to a request from a user or another device, the electronic device 101, instead of, or in addition to, executing the function or the service, may request the one or more external electronic devices to perform at least part of the function or the service. The one or more external electronic devices receiving the request may perform the at least part of the function or the service requested, or an additional function or an additional service related to the request, and transfer an outcome of the performing to the electronic device 101. The electronic device 101 may provide the outcome, with or without further processing of the outcome, as at least part of a reply to the request. To that end, a cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used, for example. The electronic device 101 may provide an ultra-low-latency service by using, e.g., distributed computing or mobile edge computing. In another embodiment, the external electronic device 104 may include an Internet of things (IoT) device. The server 108 may be an intelligent server using machine learning and/or a neural network. According to an embodiment, the external electronic device 104 or the server 108 may be included in the second network 199. The electronic device 101 may be applied to intelligent services (e.g. smart homes, smart cities, smart cars, or health care) on the basis of 5G communication technology and IoT-related technology.

FIG. 2A is a view for describing wireless charging between a charging pad and an electronic device, according to various embodiments.

In FIG. 2A, a wireless power transmission device 200 is a charging pad and a charging target is an electronic device 201a like a smartphone. As shown in FIG. 2A, the wireless power transmission device 200 may include a housing having a shape capable of supporting the electronic device 201a. At least one of the components of the electronic device 101 described with reference to FIG. 1 may be disposed in a housing of the wireless power transmission device 200.

A shown in FIG. 2A, the charging target, i.e., the electronic device 201a may be placed on the wireless power transmission device 200. When the electronic device 201a is placed, the wireless power transmission device 200 may detect that the electronic device 201a is positioned on the wireless power transmission device 200, and may be connected to the electronic device 201a through short-range wireless communication. The wireless power transmission device 200 may then perform wireless charging by starting transmission of power to the electronic device 201a.

FIG. 2B is a view for describing wireless charging between an electronic device and an external electronic device, according to various embodiments. An electronic device 201b (e.g., the electronic device 101 of FIG. 1) may activate a 'wireless power sharing' function based on a user input. The wireless power sharing function shares the battery power of the electronic device 201b with external

electronic devices

201c, 202a, and 202b, and may wirelessly supply power to the external

electronic devices

201c, 202a, and 202b. In an example shown in FIG. 2B, it is illustrated that charging targets, i.e., the external

electronic devices

201c, 202a, and 202b (e.g., a smartphone, a smart watch, and a wireless earphone) are wireless power reception devices, but the wireless power reception devices may be various electronic devices capable of receiving low power and being wirelessly charged.

As shown in FIGS. 2A and 2B, each of the wireless power transmission device 200 and the electronic device 201b may perform wireless charging by transmitting power corresponding to a charging target. Herein, when each of the wireless power transmission device 200 and the electronic device 201b performs wireless charging, wireless charging may be performed with power that satisfies criteria for a permissible value regarding the maximum permissible exposure (MPE) of electromagnetic waves and/or an absorption rate of electromagnetic waves with respect to human bodies.

For example, wireless technology regulations for each country for the purpose of protection to protect the safety of nationals and prevent disturbance of other systems regulate electronic devices that generate electromagnetic waves to operate with a power in predefined regulations.

However, regulations applied to the wireless power transmission device 200 of a charging pad type may be different from regulations applied to the electronic device 201b of a smartphone type. For example, in wireless charging, a permissible value in the wireless power transmission device 200 of the charging pad type may be different from a permissible value in the electronic device 201b of the smartphone type.

As shown in FIG. 2A, the wireless power transmission device 200 of the charging pad type is used in a state of being separated by a certain distance (e.g., 20 cm or more) from the user, and transmits power in a state of being located at the certain distance or longer from the user in wireless charging, such that an influence of electromagnetic waves upon human bodies may be smaller than the electronic device 201b of the smartphone type. The wireless power transmission device 200 of the charging pad type may perform wireless charging with power corresponding to mobile regulations defined in a transborder communication regulatory organization (e.g., the Federal Communications Commission (FCC)).

On the other hand, the electronic device 201b of the smartphone type is used by most users within the certain distance (e.g., 20 cm) while being held in the hand, such that the electronic device 201b may be configured to operate based on portable regulations defined by the transborder communication regulatory organization (e.g., the FCC) when wireless charging is performed. Low-frequency band radio frequency (RF) exposure requirements corresponding to the mobile regulations defined by the FCC may be different from those corresponding to the portable regulations defined by the FCC.

For example, in wireless charging, stricter regulations may be applied to a case where the external

electronic devices

201c, 202a, and 202b are charged using the electronic device 201b such as a smartphone than to a case where the electronic device 201a is charged in a state of being placed on the charging pad 200. The electronic device 201b may operate as a wireless power transmission device like the charging pad 200, but an output thereof may be limited when compared to the charging pad 200 to satisfy predefined national regulations.

However, when the output of the electronic device 201b is limited, charging efficiency is also lowered, increasing the charging time of the external

electronic devices

201c, 202a, and 202b. Moreover, the charging efficiency of the electronic device 201b like a smartphone may differ according to a type of a charging target. This will be described with reference to FIGS. 3A and 3B.

FIG. 3A is a view for describing RF exposure in wireless charging between an electronic device and an external electronic device, according to various embodiments.

RF exposure results may differ between a case where wireless charging is performed in a state where a bar-type smartphone, an external electronic device 301b is placed on an electronic device 301a as shown in (a) of FIG. 3A and a case where wireless charging is performed in a state where a smart watch, an external electronic device 302 is placed on the electronic device 301a as shown in (b) of FIG. 3A.

When the wireless power transmission device is the electronic device 301a like a smartphone, stricter criteria may be applied thereto to satisfy radio wave acceptance criteria for each country because the wireless power transmission device is classified as a portable device defined in the transborder communication regulatory organization (e.g., the FCC). To satisfy such criteria, a wireless output from the electronic device 301a is limited in activation of the wireless battery sharing function.

In wireless charging, a high transmission power may quickly charge a charging target, but a higher power may increase an influence of electromagnetic waves upon human bodies. In this case, the electromagnetic waves may be proportional to a square of an electric field strength. Thus, the influence of the electromagnetic waves upon human bodies may be reduced by limiting the output of the electronic device 301a, but in this case, the charging efficiency may decrease, lengthening the charging time of the external

electronic devices

301b and 302. Moreover, even when the output of the electronic device 301a is limited, regulations defined in the transborder communication regulatory organization may not be satisfied according to the sizes of the external

electronic devices

301b and 302.

For example, when wireless charging is performed while the smart watch, the external electronic device 302 being placed on the electronic device 301a as shown in (b) of FIG. 3A, a charging coil area of the electronic device 301a may not be completely covered by the external electronic device 302, causing more electromagnetic waves around the external electronic device 302. In FIG. 3A, a spectrum indicates that RF exposure increases toward the right and decreases toward the left.

As shown in (b) of FIG. 3A, RF exposure is larger with a smaller size of the external electronic device 302, such that an absorption rate of the electromagnetic waves with respect to the human bodies may be degraded. Thus, in view of the electronic device 301a, the regulations should be satisfied when any type of a charging target is charged, charging may be performed with limited power with respect to power outputtable from the electronic device 301a.

For example, an influence upon the human bodies with respect to the sizes of the external

electronic devices

301b and 302 may be recognized based on RF exposure experiment, as shown in Table 1 and Table 2.

Test Configuration	Test mode	Test distance	Test Position	H-Field Limit (A/m)	H-Field measurement data (A/m)
Phone to Phone	Operation Real Product (Power <10% charging)	15 mm	Top	90	0.6296
Phone to Watch	Operation Real Product (Power <10% charging)	15 mm	Top	90	9.7830

Test Configuration	Test mode	Test distance	Test Position	E-Field Limit (V/m)	E-Field measurement data (V/m)
Phone to Phone	Operation Real Product (Power <10% charging)	15 mm	Top	83	8.0790
Phone to Watch	Operation Real Product (Power <10% charging)	15 mm	Top	83	31.256

As shown in Table 1 and Table 2, it may be seen from an experiment that an RF exposure result (e.g., H-Field measurement data or E-Field measurement data) is higher in wireless charging between the electronic device 301a of the smartphone type and the external electronic device 302 smaller in size than the electronic device 301a of the smartphone type than in wireless charging between the electronic device 301a of the smartphone type and the external electronic device 301b of the smartphone type.

Therefore, even when the same output power is used in wireless charging, acceptance of an electronic device may be determined according to a type of restrictions applied to the electronic device in a corresponding country. Thus, when the electronic device of the smartphone type is caused to satisfy criteria corresponding to the portable regulations defined in the transborder communication regulatory organization, e.g., wireless charging conditions in a state of being separated from the user by a certain distance, charging may be performed with higher charging power, thereby securing user safety as well as improving charging efficiency.

For example, RF exposure results as shown in FIG. 3B may be obtained for a case where the electronic device 301a performs wireless charging with power corresponding to the portable regulations in a position separated from the user by the certain distance and for a case where the electronic device 301a performs wireless charging with power corresponding to the mobile regulations. FIG. 3B is a view for describing RF exposure with respect to power adjustment in wireless charging between an electronic device and an external electronic device, according to various embodiments.

When wireless charging is performed in a state where the smart watch, the external electronic device 302 is placed on the electronic device 301a as shown in (a) and (b) of FIG. 3B, RF exposure results may differ with different regulation conditions.

(a) of FIG. 3B shows a case where wireless charging is performed with power based on the portable regulations, and (b) of FIG. 3B shows a case where wireless charging is performed with power based on the mobile regulations.

When wireless charging is performed with power based on the portable regulations as shown in (a) of FIG. 3B, the RF exposure result may be high close to a threshold criterion indicating an absorption rate of the electromagnetic waves to the human bodies based on the portable regulations. On the other hand, when wireless charging is performed with power based on the mobile regulations as shown in (b) of FIG. 3B, the RF exposure result may be much lower than a threshold criterion indicating an absorption rate of the electromagnetic waves to the human bodies based on the mobile regulations.

According to various embodiments, when the electronic device of the smartphone type performs wireless charging in a state of being fixed motionlessly, charging may be performed with a higher output than that based on predefined wireless charging standards, and when the user touches the electronic device or adjusts a position of the electronic device, charging may be performed according to the predefined wireless charging standards to prevent the user from being excessively exposed to the electromagnetic waves. In this way, in wireless charging, charging efficiency may be maximized while providing a safe use environment of the electronic device to the user.

FIG. 4 is an internal block diagram of an electronic device for wireless charging with an external electronic device, according to various embodiments.

Referring to FIG. 4, an electronic device 401 may include at least one processor 420, a wireless charging circuit 430a, a communication circuit 490, a display 460, a sensor 476, and a battery 489, and an external electronic device 402 may include a wireless charging circuit 430b.

According to various embodiments, the at least one processor 420 may be the processor 120 described above with reference to FIG. 1.

According to various embodiments, the at least one processor 420 may control a magnitude of power transmitted by the wireless charging circuit 430a. For example, the at least one processor 420 may control a magnitude of power output from a power source (e.g., the battery 489), or control a magnitude of power transmitted from the wireless charging circuit 430a by controlling an amplification gain of a power amplifier included in the wireless charging circuit 430a or a modulation parameter (e.g., a width in pulse width modulation (PWM)) of a modulation circuit included in the wireless charging circuit 430a, and a power magnitude control scheme may not be limited. The at least one processor 420 may adjust the magnitude of the power output from the power source (e.g., the battery 489) of the electronic device 401 by controlling a duty cycle or a frequency of the power output from the power source (e.g., the battery 489) of the electronic device 401. The at least one processor 420 may control the magnitude of the power applied to the wireless charging circuit 430a by controlling the magnitude of a vias voltage of the power amplifier. According to an embodiment, the power source may include at least one of an external battery outside the electronic device 401, wired charging power introduced from the outside, or wireless charging power introduced from the outside, in addition to the battery 489 included in the electronic device 401.

The wireless charging circuit 430a may transmit wireless power to the external electronic device 402 according to various charging schemes. For example, wireless power may be transmitted according to various charging schemes such as a magnetic inductive scheme, a resonant scheme, and an electromagnetic scheme.

The wireless charging circuit 430a may communicate with the external electronic device 402 via the communication circuit 490. The communication circuit 490 and the display 460 may be the communication module 190 and the display module 160 described above with reference to FIG. 1.

The sensor 476 may include at least one of an acceleration sensor, a geomagnetic sensor, or a gyro sensor, and the processor 420 may identify a posture, an angle, or a motion of the electronic device 401 by using the sensor 476. The sensor 476 may include a proximity sensor that detects proximity of the user to the electronic device 401. For example, the proximity may be detected by detecting a change of a capacitance changing with an object (e.g., the user) proximate to the electronic device 401.

According to various embodiments, the battery 489 may supply power to at least one component of the electronic device 401 and may be the battery 189 described above with reference to FIG. 1.

FIG. 5 is a block diagram of a wireless charging circuit for an electronic device and an external electronic device, according to various embodiments. According to an embodiment, the wireless charging circuit 430a and the wireless charging circuit 430b of FIG. 5 may correspond to the wireless charging circuit 430a and the wireless charging circuit 430b of FIG. 4, respectively.

According to various embodiments, the wireless charging circuit 430a of the electronic device 401 may include a power adaptor 431a, a power generation circuit 432a, a coil 433a, and a matching circuit 434a. The power adaptor 431a may receive power from a power source and provide the received power to the power generation circuit 432a. The power generation circuit 432a may convert the received power into, for example, an alternating current (AC) waveform or amplify the received power, and then deliver the power to the coil 433a. Upon application of power to the coil 433a, an induced magnetic field having a magnitude changing over time may be formed from the coil 433a, such that power may be wirelessly transmitted. Although not shown, capacitors forming a resonant circuit together with the coil 433a may be further included in the wireless charging circuit 430a of the electronic device 401.

The resonant frequency may be defined according to standards, and may have a frequency of 100 to 205 kHz according to Qi standards based on the inductive scheme and have a frequency of 6.78 MHz according to the AFA standards based on the resonant scheme. The matching circuit 434a may perform impedance-matching between the wireless charging circuit 430a of the electronic device 401 and the wireless charging circuit 430b of the external electronic device 402, by changing at least one of a capacitance or a reactance of a circuit connected with the coil 433a, under control of the processor 420.

According to various embodiments, the wireless charging circuit 430b of the external electronic device 402 may include a coil 431b, a rectification circuit 432b, a conversion circuit 433b, and a matching circuit 434b. In the coil 431b of the wireless charging circuit 430b of the external electronic device 402, an induced electromotive force may be generated by a formed ambient magnetic field having a magnitude changing over time, such that the wireless charging circuit 430b of the external electronic device 402 may wirelessly receive power. The rectification circuit 432b may rectify the received power of the AC waveform.

The conversion circuit 433b may adjust a voltage of the rectified power and deliver the voltage-adjusted power to a PMIC of the external electronic device 402. The wireless charging circuit 430b of the external electronic device 402 may further include a regulator, or the conversion circuit 433b may be replaced with a regulator. The matching circuit 434b may perform impedance-matching between the wireless charging circuit 430a of the electronic device 401 and the wireless charging circuit 430b of the external electronic device 402, by changing at least one of a capacitance or a reactance of a circuit connected with the coil 431b, under control of the processor of the external electronic device 402.

According to various embodiments, an electronic device may include a battery, at least one sensor, a wireless charging circuit providing power to an external electronic device, and at least one processor, in which the at least one processor is configured to identify a first posture of the electronic device based on a sensing value identified from the at least one sensor, detect an external electronic device corresponding to a charging target, identify whether the first posture is maintained corresponding to detection of the external electronic device, and control the wireless charging circuit to provide a second power higher than a first power based on predefined wireless charging standards to the external electronic device while the first posture is maintained.

According to various embodiments, the at least one processor may be configured to control the wireless charging circuit to provide the first power based on the predefined wireless charging standards to the external electronic device when the first posture is not maintained.

According to various embodiments, the first power may be permissible power related to a maximum permissible exposure of electromagnetic waves, and the first posture may include a posture in which a surface including a display of the electronic device is placed oriented toward a bottom.

According to various embodiments, the at least one processor may be configured to identify whether a change occurs in the first posture while providing the second power to the external electronic device.

According to various embodiments, the at least one processor may be configured to control the wireless charging circuit to provide the first power that is lower than the second power to the external electronic device when the change occurs in the first posture.

According to various embodiments, the at least one processor may be configured to control the wireless charging circuit to stop providing the second power to the external electronic device when the change in the first posture falls beyond a threshold range.

According to various embodiments, the first power based on the predefined wireless charging standards may be a power corresponding to portable regulations defined by a transborder communication regulatory organization, and the second power may be a power corresponding to mobile regulations defined by the transborder communication regulatory organization.

According to various embodiments, the second power may be a power that satisfies a threshold value criterion indicating a body electromagnetic wave absorption rate based on the mobile regulations, which is set higher than a threshold value criterion indicating a body electromagnetic wave absorption rate based on the portable regulations.

According to various embodiments, the at least one processor may be configured to identify a user input for activating a function of sharing a power of the battery and identify a first posture of the electronic device in response to the user input.

According to various embodiments, the at least one processor may include at least one of an acceleration sensor, a geomagnetic sensor, or a gyro sensor, and the at least one processor may be configured to identify whether the first posture is maintained by using the at least one sensor in response to detection of the external electronic device.

FIG. 6 is an operation flowchart 600 of an electronic device to adjust power in wireless charging, according to various embodiments.

Steps/operations in an operating method of FIG. 6 may be performed by at least one of the electronic device (e.g., the electronic device 101 of FIG. 1 and the electronic device 401 of FIG. 4) or at least one processor (e.g., the processor 120 of FIG. 1 and the processor 420 of FIG. 4) of the electronic device. In an embodiment, at least one of operations 605 through 625 may be omitted, an order of some of operations 605 through 625 may be changed, or other operations may be added. In addition, operations in the following embodiment may be sequentially performed, but may not be necessarily performed. For example, the order of operations may be changed and at least two operations may be performed in parallel.

In operation 605, the electronic device 401 may identify a first posture of the electronic device 401 based on a sensing value identified from at least one sensor.

According to an embodiment, for wireless power transmission, the wireless charging circuit 430a (e.g., a wireless charging coil) may be included in a housing of the electronic device 401. As a surface for wireless power transmission, any interface surface in the form of a flat surface may be possible, and a charging target may be placed on the interface surface and the wireless charging coil may be mounted under the interface surface.

According to an embodiment, when the electronic device 401 is a foldable device, a charging target, the external electronic device 402 may be placed on a surface including the wireless charging circuit 430a (e.g., the wireless charging coil) in a state of being folded or unfolded. Thus, the first posture may include a posture in which the surface including the wireless charging circuit 430a is oriented upward.

For example, when the surface including the wireless charging circuit 430a is a rear surface, the rear surface may be oriented upward, that is, a surface including the display 460 may be oriented to the bottom in a wireless power transmission mode. In this case, the first posture may include a posture in which a surface including a main display device (e.g., the display module 160 of FIG. 1 or the display 460 of FIG. 4) of the electronic device is oriented toward the bottom.

According to an embodiment, the at least one sensor may include at least one of an acceleration sensor, a geomagnetic sensor, or a gyro sensor. According to an embodiment, various sensing values such as motion and angle in addition to a posture of the electronic device 401 may be criteria for determining operations based on predefined wireless charging standards (e.g., portable regulations) or other wireless charging standards (e.g., mobile regulations). According to an embodiment, user's proximity determined using a proximity sensor may also be a criterion for determining an operation based on any one of the standards.

According to various embodiments, the electronic device 401 may identify a power sharing start event of the battery (e.g., the battery 189 of FIG. 1) of the electronic device 401. According to an embodiment, the electronic device 401 may identify a user input for activating a function of sharing a power of the battery and identify the first posture of the electronic device 401 in response to the user input.

For example, the electronic device 401 may display a user interface (UI) related to a wireless power transmission (Tx) mode and activate the Tx mode based on the user input. The electronic device 401 may wirelessly supply power to the external electronic device 402 by using the power of the battery upon activation of the Tx mode. Herein, the user input may include a user's touch input inputted through a UI displayed on a display (e.g., the display module 160 of FIG. 1 and the display 460 of FIG. 4) of the electronic device 401 or manipulation of a physical button formed in the exterior of the housing.

According to an embodiment, the electronic device 401 may determine whether to activate the Tx mode. To activate the Tx mode, the electronic device 401 may identify whether a charging target, an external electronic device is detected in a state of being placed in the first posture, in operation 610. When the charging target is not detected, a wireless charging operation may be terminated without activation of the Tx mode. For example, wireless charging may be possible when the external electronic device 402 for wireless charging is disposed in a chargeable area of the electronic device 401. In operation 615, the electronic device 401 may identify whether the first posture is maintained corresponding to detection of the external electronic device. According to an embodiment, the electronic device 401 may identify whether the first posture is maintained by using the at least one sensor.

According to an embodiment, the first posture may indicate a state where the external electronic device 402 is placed on a chargeable area of the electronic device 401 to share the power of the battery of the electronic device 401 with the external electronic device 402. For example, a function of sharing the power of the battery may include an operation of sharing power stored in the battery of the electronic device 401 with the external electronic device 402 when the electronic device 401 and the external electronic device 402 contact each other or the external electronic device 402 is located within a certain distance (e.g., a short range) from the electronic device 401. For example, when the rear surface of the electronic device 401 and the rear surface of the external electronic device 402 contact each other and thus a distance between a coil disposed on the rear surface of the electronic device 401 and a coil disposed on the rear surface of the external electronic device 402 is minimum, then the electronic device 401 may start power transmission to the external electronic device 402.

According to various embodiments, when the electronic device 401 identifies that the first posture is maintained, the electronic device 401 may regard the electronic device 401 as being in a motionless fixed state for charging and operate to transmit power corresponding to the external electronic device 402. When the electronic device 401 performs charging under the same condition as a charging pad (e.g., the charging pad 200 of FIG. 2A) in an activated state of the function of sharing power of the battery, output limitation caused by an absorption rate of electromagnetic waves with respect to human bodies and output attenuation caused by the size of a charging target may be solved. For example, when the electronic device 401 is placed separated from the user by a certain distance, user safety may be secured, such that charging may be performed with higher power than designated power in wireless charging. In this case, the electronic device 401 may improve charging efficiency regardless of a type of a charging target such as a smart watch or a wireless earphone as well as a smartphone.

Thus, while the first posture is maintained, the electronic device 401 may control the wireless charging circuit (e.g., the wireless charging circuit 430a) of the electronic device 401 to provide second power higher than first power based on predefined wireless charging standards to the external electronic device during retention of the first posture in operation 620. According to an embodiment, the electronic device 401 may identify whether a change occurs in the first posture while providing the second power to the external electronic device 402. According to an embodiment, the electronic device 401 may provide the first power that is lower than the second power to the external electronic device 402 when the change occurs in the first posture during providing of the second power. According to another embodiment, the electronic device 402 may provide the first power that is lower than the second power to the external electronic device 402 when the change in the first posture falls within a threshold range during providing of the second power, and may stop providing the second power to the external electronic device 402 when the change in the first posture falls beyond the threshold range during providing of the second power.

When the first posture is not maintained in operation 615, the electronic device 401 may control the wireless charging circuit (e.g., the wireless charging circuit 430a) of the electronic device 401 to provide the first power to the external electronic device in operation 625. According to an embodiment, the first power based on the predefined wireless charging standards may be a permissible power (or value) related to a maximum permissible exposure (e.g., MPE) of electromagnetic waves. According to an embodiment, the first power based on the predefined wireless charging standards may be a power corresponding to portable regulations defined by a transborder communication regulatory organization (e.g., the FCC), and the second power may be a power corresponding to mobile regulations defined by the transborder communication regulatory organization. According to an embodiment, the second power may be a power that satisfies a threshold value criterion indicating a body electromagnetic wave absorption rate based on the mobile regulations, which is set higher than a threshold value criterion indicating a body electromagnetic wave absorption rate based on the portable regulations.

FIG. 7 is an operation flowchart 700 of an electronic device to change a charging scheme with respect to a posture of the electronic device, according to various embodiments. Hereinbelow, a description will be made with reference to FIGS. 8 and 10. FIG. 8 is a view for describing a charging scheme with respect to a first posture of an electronic device according to various embodiments, FIG. 9 is a view for describing a charging scheme with respect to a second posture of an electronic device according to various embodiments, and FIG. 10 is a view for describing a charging scheme with respect to a third posture of an electronic device according to various embodiments.

Referring to FIG. 7, in operation 705, a first electronic device (e.g., the electronic device 401 of FIG. 4) may activate a wireless charging sharing function based on a user input. In operation 710, the first electronic device may set an initial posture by using at least one sensor in response to activation of the wireless charging sharing function. For example, when charging starts in the first electronic device for wireless charging, a posture at the time of start of charging may be identified and stored. According to an embodiment, as a criterion for determining whether a charging condition of the first electronic device is a condition where charging is possible with power corresponding to mobile regulations defined by the transborder communication regulatory organization or with power corresponding to portable regulations defined by the transborder communication regulatory organization, the posture of the first electronic device is used as an example, but the disclosure is not limited thereto. For example, the posture of the first electronic device may be understood as including both an angle and a motion of the first electronic device.

As shown in FIG. 8, the first posture in which the surface including the main display device of the electronic device is oriented to the bottom may be identified based on a sensing value identified from the at least one sensor before start of charging. Herein, the first electronic device may set the first posture as an initial posture and store the same. In this case, the first posture may be such that the front surface of the electronic device is oriented to the bottom, but may not necessarily contact the bottom surface. For example, as shown in FIG. 9, a state where a portion of the first electronic device is placed not to be horizontal to the bottom surface may be set to the initial posture.

To switch to the Tx mode to correspond to activation of the wireless charging sharing function, the user may dispose the first electronic device and a second electronic device (e.g., the external electronic device 402 of FIG. 4) in a designated posture. In operation 715, the second electronic device (e.g., the external electronic device 402 of FIG. 4) may be disposed on the first electronic device.

The first electronic device may identify whether a charging condition is satisfied in response to arrangement of the second electronic device, in operation 720. When the charging condition is not satisfied, the first electronic device may stop wireless charging in operation 750. For example, the first electronic device may identify whether the second electronic device, and identify whether the second electronic device is a chargeable device that is not a foreign substance , and identify whether a power of the battery of the first electronic device can be shared with the second electronic device.

On the other hand, when the charging condition is satisfied, the first electronic device may identify whether the initial posture is maintained in operation 725. When the initial posture is maintained, the first electronic device may perform charging on the second electronic device with the second power that is higher than the first power, in operation 735.

When the initial posture is not maintained in operation 725, the first electronic device may identify whether a change in the initial posture falls within a threshold range in operation 740. When the change falls within the threshold range, the first electronic device may perform charging on the second electronic device with the first power in operation 745. For example, the posture of the electronic device may change from the posture shown in FIG. 8 to the posture shown in FIG. 9. For example, when the first electronic device placed by the user on the table moves very closely to the user or a temporary posture change occurs due to shaking of the table, this may be a temporary proximity by the user, such that the first electronic device may perform charging with power based on predefined wireless charging standards, instead of stopping high-output wireless charging.

On the other hand, when the change in the posture continuously occurs, for example, when the user raises or manipulates the first electronic device as shown in FIG. 10, transmission power needs to be reduced to reduce the exposure of the user to the electromagnetic waves. Thus, when the change in the posture does not fall within the threshold range in operation 740, the first electronic device may stop wireless charging in operation 750. For example, when the change in the posture continuously occurs or a change occurs in capacitance, the first electronic device may determine that wireless charging is not possible and stop charging.

An electronic device according to various embodiments may be one of various types of electronic devices, according to various embodiments disclosed herein. The electronic devices may include, for example, a portable communication device (e.g., a smartphone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance. According to an embodiment of the disclosure, the electronic devices are not limited to those described above.

It should be appreciated that various embodiments of the present disclosure and the terms used therein are not intended to limit the technological features set forth herein to particular embodiments and include various changes, equivalents, or replacements for a corresponding embodiment. With regard to the description of the drawings, similar reference numerals may be used to refer to similar or related elements. It is to be understood that a singular form of a noun corresponding to an item may include one or more of the things, unless the relevant context clearly indicates otherwise. As used herein, each of such phrases as "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" may include any one of, or all possible combinations of the items enumerated together in a corresponding one of the phrases. As used herein, such terms as "1^st" and "2^nd", or "first" and "second" may be used to simply distinguish a corresponding component from another, and does not limit the components in other aspect (e.g., importance or order). It is to be understood that if an element (e.g., a first element) is referred to, with or without the term "operatively" or "communicatively", as "coupled with", "coupled to", "connected with", or "connected to" another element (e.g., a second element), it means that the element may be coupled with the other element directly (e.g., wiredly), wirelessly, or via a third element.

As used in various embodiments, the term "module" may include a unit implemented in hardware, software, or firmware, and may interchangeably be used with other terms, for example, "logic", "logic block", "part", or "circuitry". A module may be a single integral component, or a minimum unit or part thereof, adapted to perform one or more functions. For example, according to an embodiment, the module may be implemented in a form of an application-specific integrated circuit (ASIC).

Various embodiments as set forth herein may be implemented as software (e.g., the program 140) including one or more instructions that are stored in a storage medium (e.g., internal memory 136 or external memory 138) that is readable by a machine (e.g., the electronic device 101). For example, a processor (e.g., the processor 120) of the machine (e.g., the electronic device 101) may invoke at least one of the one or more instructions stored in the storage medium, and execute it, with or without using one or more other components under the control of the processor. This allows the machine to be operated to perform at least one function according to the at least one instruction invoked. The one or more instructions may include a code generated by a complier or a code executable 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" simply means that the storage medium is a tangible device, and does not include a signal (e.g., an electromagnetic wave), but this term does not differentiate between where data is semi-permanently stored in the storage medium and where the data is temporarily stored in the storage medium.

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

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

Claims

An electronic device comprising:

a battery;

at least one sensor;

a wireless charging circuit providing power to an external electronic device; and

at least one processor,

wherein the at least one processor is configured to:

identify a first posture of the electronic device based on a sensing value identified from the at least one sensor;

detect an external electronic device corresponding to a charging target;

identify whether the first posture is maintained, in response to detection of the external electronic device; and

control the wireless charging circuit to provide a second power higher than a first power based on predefined wireless charging standards to the external electronic device while the first posture is maintained.
The electronic device of claim 1, wherein the at least one processor is configured to control the wireless charging circuit to provide the first power based on the predefined wireless charging standards to the external electronic device when the first posture is not maintained.
The electronic device of claim 1, wherein the first power is a permissible power related to a maximum permissible exposure of electromagnetic waves, and the first posture comprises a posture in which a surface comprising a display of the electronic device is placed oriented toward a bottom.
The electronic device of claim 1, wherein the at least one processor is configured to:

identify whether a change occurs in the first posture while providing the second power to the external electronic device; and

control the wireless charging circuit to provide the first power that is lower than the second power to the external electronic device when the change occurs in the first posture.
The electronic device of claim 4, wherein the at least one processor is configured to control the wireless charging circuit to stop providing the second power to the external electronic device when the change in the first posture falls beyond a threshold range.
The electronic device of claim 1, wherein the first power based on the predefined wireless charging standards is a power corresponding to portable regulations defined by a transborder communication regulatory organization, and the second power is a power corresponding to mobile regulations defined by the transborder communication regulatory organization.
The electronic device of claim 6, wherein the second power is a power that satisfies a threshold value criterion indicating an absorption rate of electromagnetic waves with respect to human bodies based on the mobile regulations, which is set higher than a threshold value criterion indicating an absorption rate of the electromagnetic waves with respect to the human bodies based on the portable regulations.
The electronic device of claim 1, wherein the at least one processor is configured to:

identify a user input for activating a function of sharing a power of the battery; and

identify a first posture of the electronic device in response to the user input.
The electronic device of claim 8, wherein the at least one processor comprises at least one of an acceleration sensor, a geomagnetic sensor, or a gyro sensor, and

the at least one processor is configured to identify whether the first posture is maintained by using the at least one sensor in response to detection of the external electronic device.
A method for adjusting a power in wireless charging by an electronic device, the method comprising:

identifying a first posture of the electronic device based on a sensing value identified from at least one sensor;

detecting an external electronic device corresponding to a charging target;

identifying whether the first posture is maintained, in response to detection of the external electronic device; and

providing a second power higher than a first power based on predefined wireless charging standards to the external electronic device while the first posture is maintained.
The method of claim 10, further comprising providing the first power based on the predefined wireless charging standards to the external electronic device when the first posture is not maintained.
The method of claim 10, wherein the first power is a permissible power related to a maximum permissible exposure of electromagnetic waves, and the first posture comprises a posture in which a surface comprising a display of the electronic device is placed oriented toward a bottom.
The method of claim 10, further comprising:

identifying whether a change occurs in the first posture while providing the second power to the external electronic device;

providing the first power that is lower than the second power to the external electronic device when a change occurs in the first posture; and

stopping providing the second power to the external electronic device when the change in the first posture falls beyond a threshold range.
The method of claim 10, wherein the first power based on the predefined wireless charging standards is a power corresponding to portable regulations defined by a transborder communication regulatory organization, and the second power is a power corresponding to mobile regulations defined by the transborder communication regulatory organization.
The method of claim 14, wherein the second power is a power that satisfies a threshold value criterion indicating an absorption rate of electromagnetic waves with respect to human bodies based on the mobile regulations, which is set higher than a threshold value criterion indicating an absorption rate of the electromagnetic waves with respect to the human bodies based on the portable regulations.