Wireless charging transmitter and wireless power transmission method

Abstract

One or more disclosed embodiments relate to a wireless charging transmitter and a wireless power transmission method, the wireless charging transmitter comprising: a first charging pad comprising a first wireless power circuit; a second charging pad comprising a second wireless power circuit; and a controller configured to transmit a first specified wireless power size via the first wireless power circuit in response to detecting that a first electronic device is placed on the first charging pad, transmit a first command to reduce the power transmitted to the first electronic device in response to detecting that a second electronic device is placed on the second charging pad, and transmit the second specified wireless power size via the first wireless power circuit and the second wireless power circuit after receiving a first request for a second specified wireless power size from the first electronic device in response to the first command. The present disclosure may also include various other embodiments.

Description

Technical Field

[0001] One or more disclosed embodiments generally relate to wireless charging transmitters and wireless power transfer methods. Background Art

[0002] Recently, wireless or contactless charging technologies have been developed and applied to various types of electronic devices.

[0003] These wireless charging technologies enable electronic devices such as smartphones and wearable devices to be charged by simply placing them on a charging pad or stand without requiring physical and electrical contact between the battery of the electronic device and the charger. Summary of the invention

[0004] Examples of wireless charging transmitters may include multiple charging pads for charging multiple electronic devices at the same time. Hereinafter, these charged electronic devices may be referred to as wireless charging receivers.

[0005] However, the maximum transmission power of a conventional wireless charging transmitter is limited by the input power supplied by an external power device (eg, a travel adapter or an AC power source), which may prevent the wireless charging transmitter from supplying sufficient charging power required by multiple electronic devices.

[0006] According to the disclosed embodiment, a wireless charging transmitter includes: a first charging pad, which includes a first wireless power circuit; a second charging pad, which includes a second wireless power circuit; and a controller, which is electrically connected to the first wireless power circuit and the second wireless power circuit and is configured to: in response to detecting that a first electronic device is placed on the first charging pad, after an authentication process with the first electronic device for a specified protocol is completed, transmit a first specified wireless power size of power via the first wireless power circuit, in response to detecting that a second electronic device is placed on the second charging pad while transmitting the first specified wireless power size of power via the first wireless power circuit, send a first command to reduce the power transmitted to the first electronic device, wherein the second electronic device requests the same or similar amount of power as the first electronic device, and after receiving a first request for a second specified wireless power size of power from the first electronic device in response to the first command, transmit the second specified wireless power size of power via the first wireless power circuit and the second wireless power circuit.

[0007] According to the disclosed embodiment, a wireless charging transmitter includes: a first charging pad, which includes a first wireless power circuit; a second charging pad, which includes a second wireless power circuit; and a controller, which is electrically connected to the first wireless power circuit and the second wireless power circuit and is configured to: in response to detecting a wireless charging receiver on the second charging pad, send power of a specified wireless power size requested by the wireless charging receiver placed on the second charging pad via the second wireless power circuit, regardless of whether another wireless charging receiver is placed on the first charging pad, and in response to detecting that a first electronic device is placed on the first charging pad, when the wireless charging receiver is placed on the second charging pad, send a command to the first electronic device requesting adjustment of the wireless charging power.

[0008] According to the disclosed embodiments, a wireless power transmission method of a wireless charging transmitter is provided, the wireless charging transmitter comprising a first charging pad having a first wireless power circuit and a second charging pad having a second wireless power circuit, the method comprising: in response to detecting that a wireless charging receiver is placed on the second charging pad, sending power of a specified wireless power size requested by the wireless charging receiver to the second charging pad via the second wireless power circuit, regardless of whether another wireless charging receiver is placed on the first charging pad; and in response to detecting that a first electronic device is placed on the first charging pad, when the wireless charging receiver is placed on the second charging pad, sending a command requesting adjustment of the wireless charging power to the first electronic device.

[0009] According to the disclosed embodiment, an electronic device includes: a battery; a coil; a receiving circuit electrically connected to the coil; a charger configured to control a charging state of the battery based on a voltage supplied to the receiving circuit; and a processor electrically connected to the receiving circuit and the charger and configured to: in response to detecting that the electronic device is placed alone on a wireless charging transmitter having a plurality of charging pads, wirelessly charge the electronic device with a first specified wireless power size based on a result of an authentication process performed with the wireless charging transmitter for a specified protocol, receive a first command to reduce power from the wireless charging transmitter while charging with the first specified wireless power size, and in response to receiving the first command, send a request to the wireless charging transmitter to change the power transmitted to the electronic device from the first specified wireless power size to a second specified wireless power size that is smaller than the first specified wireless power size.

[0010] Additional aspects will be set forth in part in the description which follows and, in part, will be apparent from the description, or may be learned by practice of the presented embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The above and other aspects, features and advantages of certain embodiments of the present disclosure will become more apparent from the following description in conjunction with the accompanying drawings, in which:

[0012] Figure 1 is a block diagram illustrating an electronic device in a network environment according to the disclosed embodiment;

[0013] Figure 2 is a block diagram illustrating a power management module and a battery according to the disclosed embodiments;

[0014] Figure 3 is a diagram illustrating a configuration of a wireless charging system according to a disclosed embodiment;

[0015] Figure 4 is a top view illustrating a wireless charging transmitter according to the disclosed embodiment;

[0016] Figure 5 is a top view illustrating a situation where a wireless charging transmitter according to the disclosed embodiment is charging a similar electronic device;

[0017] Figure 6 is a top view illustrating a situation where the wireless charging transmitter 302 according to the embodiment is charging different electronic devices at the same time;

[0018] Figure 7 is a signal flow diagram illustrating an electronic device authentication process according to the disclosed embodiment;

[0019] Figure 8 is a flowchart illustrating a method of executing different power transmission / reception modes according to the authentication level of an electronic device according to a disclosed embodiment;

[0020] Fig. 9 is a top view for explaining the operation of the wireless charging transmitter according to the disclosed embodiment according to the state where various wireless charging receivers are placed on multiple charging pads of the wireless charging transmitter 302;

[0021] Fig.10 is a flow chart illustrating the operation of an electronic device according to the disclosed embodiment;

[0022] Fig.11 is a signal flow diagram illustrating the operation of a wireless charging system according to the disclosed embodiments;

[0023] Fig.12 is a signal flow diagram illustrating the operation of a wireless charging system according to another disclosed embodiment.

[0024] In the drawings, the same or similar reference numerals may be used for the same or similar components. DETAILED DESCRIPTION

[0025] Figure 1 1 is a block diagram illustrating an electronic device 101 in a network environment 100 according to various embodiments. Figure 1 , the electronic device 101 in the network environment 100 may communicate with the electronic device 102 via the first network 198 (e.g., a short-range wireless communication network), or communicate with the electronic device 104 or the server 108 via the second network 199 (e.g., a long-range wireless communication network). According to an embodiment, the electronic device 101 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 device 150, a sound output device 155, a display device 160, an audio module 170, a sensor module 176, an interface 177, a haptic module 179, a camera module 180, a power management module 188, a battery 189, a communication module 190, a user identification module (SIM) 196, or an antenna module 197. In some embodiments, at least one of the components (e.g., the display device 160 or the camera module 180) may be omitted from the electronic device 101, or one or more other components may be added to the electronic device 101. In some embodiments, some of the components may be implemented as a single integrated circuit.For example, the sensor module 176 (eg, a fingerprint sensor, an iris sensor, or an illumination sensor) may be implemented to be embedded in the display device 160 (eg, a display).

[0026] 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 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 load a command or data received from another component (e.g., sensor module 176 or communication module 190) into the volatile memory 132, process the command or data stored in the volatile memory 132, and store the resultant data in the non-volatile memory 134. According to an embodiment, the processor 120 may include a main processor 121 (e.g., a central processing unit (CPU) or an application processor (AP)) and an auxiliary processor 123 (e.g., a graphics processing unit (GPU), an image signal processor (ISP), a sensor hub processor, or a communication processor (CP)) that is operationally independent or combined with the main processor 121. Additionally or alternatively, the auxiliary processor 123 may be adapted to consume less power than the main processor 121, or adapted to be specifically used for a specified function. The auxiliary processor 123 may be implemented separately from the main processor 121 , or as part of the main processor 121 .

[0027] When the main processor 121 is in an inactive (e.g., sleep) state, the auxiliary processor 123 may control at least some of the functions or states related to at least one component (e.g., display device 160, sensor module 176, or communication module 190) among the components of the electronic device 101 (not the main processor 121), or when the main processor 121 is in an active state (e.g., running an application), the auxiliary processor 123 may control at least some of the functions or states related to at least one component (e.g., display device 160, sensor module 176, or communication module 190) among the components of the electronic device 101 together with the main processor 121. 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., camera module 180 or communication module 190) that is functionally related to the auxiliary processor 123.

[0028] The memory 130 may store various data used by at least one component of the electronic device 101 (e.g., the processor 120 or the sensor module 176). The various data may include, for example, software (e.g., the program 140) and input data or output data for commands related thereto. The memory 130 may include a volatile memory 132 or a nonvolatile memory 134.

[0029] The program 140 may be stored as software in the memory 130 , and may include, for example, an operating system (OS) 142 , middleware 144 , or applications 146 .

[0030] The input device 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 device 150 may include, for example, a microphone, a mouse, a keyboard, or a digital pen (e.g., a stylus).

[0031] The sound output device 155 can output a sound signal to the outside of the electronic device 101. The sound output device 155 may include, for example, a speaker or a receiver. The speaker can be used for general purposes such as playing multimedia or playing records, and the receiver can be used for incoming calls. Depending on the embodiment, the receiver can be implemented as a separate part from the speaker, or as a part of the speaker.

[0032] The display device 160 may visually provide information to the outside of the electronic device 101 (e.g., a user). The display device 160 may include, for example, a display, a holographic device, or a projector, and a control circuit for controlling a corresponding one of the display, the holographic device, and the projector. According to an embodiment, the display device 160 may include a touch circuit adapted to detect a touch or a sensor circuit (e.g., a pressure sensor) adapted to measure the strength of a force caused by a touch.

[0033] The audio module 170 may convert sound into an electrical signal, or vice versa. According to an embodiment, the audio module 170 may obtain sound via the input device 150, or output sound via the sound output device 155 or an earphone of an external electronic device (e.g., electronic device 102) directly (e.g., wired) or wirelessly connected to the electronic device 101.

[0034] The sensor module 176 may detect an operating state (e.g., power or temperature) of the electronic device 101 or an environmental state (e.g., a state of a user) outside 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 illumination sensor.

[0035] The interface 177 may support one or more specific protocols to be used to connect the electronic device 101 directly (e.g., wired) or wirelessly to an external electronic device (e.g., the electronic device 102). 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.

[0036] The connection end 178 may include a connector, wherein the electronic device 101 can be physically connected to an external electronic device (e.g., the electronic device 102) via the connector. 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).

[0037] The haptic module 179 may convert the electrical signal into mechanical stimulation (eg, vibration or motion) or electrical stimulation that can be recognized by the user via his sense of touch or kinesthetic sense. According to an embodiment, the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulator.

[0038] 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.

[0039] The power management module 188 may manage power supply to the electronic device 101. According to an embodiment, the power management module 188 may be implemented as, for example, at least a part of a power management integrated circuit (PMIC).

[0040] The battery 189 may power at least one component of the electronic device 101. According to an embodiment, the battery 189 may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

[0041] The communication module 190 may support establishing a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device 101 and an external electronic device (e.g., electronic device 102, electronic device 104, or server 108), and perform communication via the established communication channel. The communication module 190 may include one or more communication processors capable of operating independently from the processor 120 (e.g., an application processor (AP)) and supporting direct (e.g., wired) communication or wireless communication. 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 can communicate with an external electronic device via a first network 198 (e.g., a short-range communication network such as Bluetooth, Wireless Fidelity (Wi-Fi) Direct, or Infrared Data Association (IrDA)) or a second network 199 (e.g., a long-range communication network such as a cellular network, the Internet, or a computer network (e.g., a LAN or a wide area network (WAN))). These various types of communication modules can be implemented as a single component (e.g., a single chip), or these various types of communication modules can be implemented as multiple components separated from each other (e.g., multiple chips). The wireless communication module 192 can identify and authenticate the electronic device 101 in a communication network (such as the first network 198 or the second network 199) using user information (e.g., an International Mobile Subscriber Identity (IMSI)) stored in the user identification module 196.

[0042] The antenna module 197 may transmit or receive a signal or power to or 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 formed of a conductive material or a conductive pattern formed in or on a substrate (e.g., a PCB). According to an embodiment, the antenna module 197 may include a plurality of antennas. In this case, at least one antenna suitable for a communication scheme used in a communication network (such as the first network 198 or the second network 199) may be selected from the plurality of antennas by, for example, the communication module 190 (e.g., the wireless communication module 192). A signal 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, another component (e.g., a radio frequency integrated circuit (RFIC)) other than the radiating element may be additionally formed as a part of the antenna module 197.

[0043] At least some of the above components may be connected to each other via an inter-peripheral communication scheme (e.g., a bus, a general purpose input output (GPIO), a serial peripheral interface (SPI), or a mobile industry processor interface (MIPI)) and communicatively transmit signals (e.g., commands or data) therebetween.

[0044] According to an embodiment, a command 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 and the electronic device 104 may be a device of the same type as the electronic device 101, or a device of a different type from the electronic device 101. According to an embodiment, all or some operations to be executed in the electronic device 101 may be executed in one or more of the external electronic device 102, the external electronic device 104, or the server 108. For example, if the electronic device 101 should automatically execute a function or service or should execute a function or service in response to a request from a user or another device, the electronic device 101 may request the one or more external electronic devices to execute at least part of the function or service instead of executing the function or service, or the electronic device 101 may request the one or more external electronic devices to execute at least part of the function or service in addition to executing the function or service. The one or more external electronic devices that receive the request may execute the requested at least part of the function or service, or execute another function or another service related to the request, and transmit the result of the execution to the electronic device 101. The electronic device 101 may provide the result as at least a partial reply to the request with or without further processing the result. To this end, for example, cloud computing technology, distributed computing technology, or client-server computing technology may be used.

[0045] Figure 2 2 is a block diagram 200 illustrating the power management module 188 and the battery 189 according to various embodiments. Figure 2 , the power management module 188 may include a charging circuit 210, a power conditioner 220, and a power meter 230. The charging circuit 210 may charge the battery 189 using power supplied from an external power source outside the electronic device 101. According to an embodiment, the charging circuit 210 may select a charging scheme (e.g., normal charging or fast charging) based at least in part on the type of the external power source (e.g., a power outlet, USB, or wireless charging), the amount of power that the external power source can supply (e.g., about 20 watts or more), or the properties of the battery 189, and may charge the battery 189 using the selected charging scheme. The external power source may be connected to the electronic device 101, for example, directly via the connection terminal 178 or wirelessly via the antenna module 197.

[0046] The power regulator 220 can generate a plurality of power with different voltage magnitudes or different current magnitudes by adjusting the voltage magnitude or current magnitude of the power supplied from the external power source or the battery 189. The power regulator 220 can adjust the voltage magnitude or current magnitude of the power supplied from the external power source or the battery 189 to different voltage magnitudes or current magnitudes suitable for each of some components included in the electronic device 101. According to an embodiment, the power regulator 220 can be implemented in the form of a low dropout (LDO) regulator or a switching regulator. The power meter 230 can measure the usage status information about the battery 189 (for example, the capacity of the battery 189, the number of times of charging or discharging, the voltage or the temperature).

[0047] The power management module 188 may use, for example, the charging circuit 210, the power conditioner 220, or the power meter 230 to determine charging status information related to the charging of the battery 189 (e.g., life, overvoltage, low voltage, overcurrent, overcharge, overdischarge, overheat, short circuit, or expansion) based at least in part on the measured usage status information about the battery 189. 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 charging status information. If it is determined that the state of the battery 189 is abnormal, the power management module 188 may adjust the charging of the battery 189 (e.g., reduce the charging current or voltage, or stop charging). According to an embodiment, at least some functions of the power management module 188 may be performed by an external control device (e.g., the processor 120).

[0048] According to an embodiment, the battery 189 may include a protection circuit module (PCM) 240. The PCM 240 may perform one or more of various functions (e.g., a pre-cutoff function) to prevent the performance degradation or damage of the battery 189. Additionally or alternatively, the PCM 240 may be configured as at least a part of a battery management system (BMS) that can perform various functions including battery balancing, measurement of battery capacity, counting of charge or discharge times, measurement of temperature, or measurement of voltage.

[0049] According to an embodiment, at least a portion of the charging state information or the usage state information about the battery 189 may be measured using a corresponding sensor (e.g., a temperature sensor) of the sensor module 176, the power meter 230, or the power management module 188. According to an embodiment, the corresponding sensor (e.g., a temperature sensor) of the sensor module 176 may be configured as a part of the PCM 240, or may be provided near the battery 189 as a separate device.

[0050] Figure 3 is a diagram illustrating a configuration of a wireless charging system 300 according to an embodiment.

[0051] exist Figure 3 In the embodiment of the present invention, the external electronic device 302 (eg, Figure 1 The electronic device 102 in the embodiment (hereinafter referred to as the power transmission device) can wirelessly transmit power to another electronic device 301 (eg, Figure 1 The external electronic device 302 may be an electronic device that operates as a wireless charging transmitter or in a power transfer mode. According to an embodiment, the external electronic device 302 may be configured similarly to the external electronic device 101 in the wireless charging transmitter. Figure 1 The electronic device 301 may be configured similarly to the electronic device 102 depicted in FIG. Figure 1 The electronic device 101 is the same as or similar to the electronic device 101 depicted in FIG.

[0052] According to an embodiment, the power transmission device 302 may include a power transmission circuit 311 , a controller or control circuit 312 , a communication circuit 313 , and a sensing circuit 314 .

[0053] According to an embodiment, the power transmission circuit 311 may include: a power adapter 311a, which is used to receive external power or electric energy (for example, from an outlet) and appropriately convert the voltage of the input power; a power generation circuit 311b, which is used to generate power; a transmitting coil 311L, which is used to wirelessly transmit power; and / or a matching circuit 311c, which is used to maximize the efficiency between the transmitting coil 311L and the receiving coil 321L.

[0054] According to an embodiment, the power transmission circuit 311 may include a plurality of sets of power adapters 311 a , power generation circuits 311 b , transmission coils 311L, and / or matching circuits 311 c in order to transmit power to a plurality of power receiving devices.

[0055] According to an embodiment, the control circuit 312 may control the operation of the power transmission device 302 and generate various messages necessary for the wireless power to be transmitted to the communication circuit 313. In an embodiment, the control circuit 312 may calculate the power (or electric energy) to be transmitted to the power receiving device 301 based on the information received from the communication circuit 313. In an embodiment, the control circuit 312 may control the power transmission circuit 311 to transmit the power generated by the transmission coil 311L to the power receiving device 301.

[0056] According to an embodiment, the communication circuit 313 may include at least one of a first communication circuit 313a and a second communication circuit 313b. For example, the first communication circuit 313a may communicate with the first communication circuit 323a of the power receiving device 301 at a frequency that is the same as or close to the frequency used by the transmitting coil 311L to transmit power. This may be referred to as in-band communication.

[0057] The first communication circuit 313a may communicate with the first communication circuit 323a using the transmitting coil 311L. The data (or communication signal) generated by the first communication circuit 313a may be transmitted using the transmitting coil 311L. The first communication circuit 313a may transmit data to the power receiving device 301 using a frequency shift keying (FSK) modulation scheme. According to an embodiment, the first communication circuit 313a may communicate with the first communication circuit 323a of the power receiving device 301 by frequency converting the power signal received via the transmitting coil 311L. The first communication circuit 313a may communicate with the first communication circuit 323a of the power receiving device 301 in such a manner that the data is included in the power signal generated by the power generating circuit 311b. For example, the first communication circuit 313a may transmit data by frequency modulating the power transmission signal.

[0058] In an embodiment, the second communication circuit 313b may communicate with the second communication circuit 323b of the power receiving device 301 using a frequency different from the frequency used by the transmitting coil 311L to transmit power. This may be referred to as out-of-band communication or out-of-band mode. For example, the second communication circuit 313b may use various short-range communication protocols such as Bluetooth, Bluetooth Low Power (BLE), Wireless Fidelity (Wi-Fi), and Near Field Communication (NFC) to obtain charging status information of the electronic device 301 from the second communication circuit 323b (e.g., voltage value after rectification or information on the rectified voltage value (e.g., Vrec), information about the current flowing through the coil or rectification circuit (e.g., Iout), various types of packets and messages).

[0059] According to an embodiment, the sensing circuit 314 may include at least one sensor for sensing at least one state of the power transmission device 302 .

[0060] According to an embodiment, the sensing circuit 314 may include at least one of a temperature sensor for sensing the temperature of the power transmitting device 302, a motion sensor for sensing the movement of the power transmitting device 302, or a current (or voltage) sensor for sensing the state of an output signal of the power transmitting device 302 (such as the magnitude of current, voltage, or power).

[0061] According to an embodiment, the current (or voltage) sensor may measure a signal output from the power transmission circuit 311, such as a signal output from the matching circuit 311c or the power generation circuit 311b. Alternatively, the current (or voltage) sensor may include a circuit for measuring a current or voltage at the front end of the coil 311L.

[0062] According to an embodiment, the sensing circuit 314 may include a circuit for foreign object detection (FOD).

[0063] According to the embodiment, the power receiving device 301 (eg, Figure 1 The electronic device 101 in the embodiment may include a power receiving circuit 321 (eg, Figure 1 power management module 188 in the control circuit 322 (e.g., Figure 1 processor 120 in the embodiment of the present invention), communication circuit 323 (e.g., Figure 1 communication module 190 in the embodiment of the present invention), at least one sensor 324 (e.g., Figure 1 sensor module 176 in), display 325 (e.g., Figure 1 160), sensing circuit 326. For simplicity, descriptions of components in the power receiving device 301 corresponding to some components in the power transmitting device 302 may be omitted herein. The processor 120 may include a microprocessor or any suitable type of processing circuit such as one or more general-purpose processors (e.g., ARM-based processors), digital signal processors (DSPs), programmable logic devices (PLDs), application-specific integrated circuits (ASICs), field programmable gate arrays (FPGAs), graphics processing units (GPUs), video card controllers, etc. In addition, it will be recognized that when a general-purpose computer accesses the code for implementing the processing shown herein, the execution of the code converts the general-purpose computer into a special-purpose computer for performing the processing shown herein. Some of the functions and steps provided in the accompanying drawings may be implemented in hardware, software, or a combination of both, and may be executed in whole or in part within the programming instructions of a computer. In addition, the skilled person understands and appreciates that a "processor" or "microprocessor" may be hardware in the disclosure claimed for protection.

[0064] According to an embodiment, the power receiving circuit 321 may include: a receiving coil 321L, which is used to wirelessly receive power from the power transmitting device 302; a matching circuit 321a, which is used to maximize the efficiency between the transmitting coil 311L and the receiving coil 321L; a rectifying circuit 321b, which is used to rectify the received AC power into DC power; a regulating circuit 321c, which is used to regulate the charging voltage; a switching circuit 321d; and / or a battery 321e (e.g., battery 189).

[0065] According to an embodiment, the control circuit 322 may control the operation of the power receiving device 301 and generate various messages necessary for the wireless power to be transmitted to the communication circuit 323 .

[0066] According to an embodiment, the communication circuit 323 may include at least one of a first communication circuit 323a and a second communication circuit 323b. The first communication circuit 323a may communicate with the power transmission device 302 via the receiving coil 321L.

[0067] The first communication circuit 323a can communicate with the first communication circuit 313a using the receiving coil 321L. The data (or communication signal) generated by the first communication circuit 323a can be transmitted using the receiving coil 321L. The first communication circuit 323a can transmit data to the power transmission device 302 using an amplitude shift keying (ASK) modulation scheme. The second communication circuit 323b can communicate with the power transmission device 302 using at least one of various short-range communication protocols such as Bluetooth, BLE, Wi-Fi, and NFC.

[0068] According to an embodiment, the at least one sensor 324 may include a current / voltage sensor, a temperature sensor, an illumination sensor, or an acceleration sensor.

[0069] According to an embodiment, the display 325 may display various contents such as information related to wireless transmission and reception of power.

[0070] According to an embodiment, the sensing circuit 326 may detect the power transmission device 302 based on the power signal or power from the power transmission device 302. The sensing circuit 326 may detect a change in a signal at an input / output terminal of the coil 321L, the matching circuit 321a, or the rectifier circuit 321b. According to another embodiment, the sensing circuit 326 may be included in the power receiving circuit 321.

[0071] Figure 4 is a top view illustrating a wireless charging transmitter according to an embodiment. For example, Figure 4 It may be a top view of the first charging pad 410 and the second charging pad 420 of the wireless charging transmitter according to the embodiment.

[0072] exist Figure 4 In the embodiment of the present invention, the wireless charging transmitter 302 (eg, Figure 1 The electronic device 102 in FIG. 4 may include a plurality of charging pads and receive power from an external power device (eg, a travel adapter or an AC power source) via an input terminal 401 .

[0073] According to an embodiment, the wireless charging transmitter 302 may include at least a first charging pad 410 and a second charging pad 420. If the wireless charging transmitter 302 detects that an external electronic device is placed on the first charging pad 410 or the second charging pad 420, it may transmit power required by the external electronic device via the first wireless power circuit 411 of the first charging pad 410 or the second wireless power circuit 421 of the second charging pad 420.

[0074] According to an embodiment, the first charging pad 410 includes a first wireless power circuit 411, which transmits wireless charging power at up to a first designated wireless power magnitude under the control of the control circuit 312 of the wireless charging transmitter 302. The second charging pad 420 includes a second wireless power circuit 421, which transmits wireless charging power at up to a second designated wireless power magnitude under the control of the control circuit 312 of the wireless charging transmitter 302. According to an embodiment, the second designated wireless power magnitude may be smaller than the first designated wireless power magnitude. For example, the second designated wireless power magnitude may correspond to normal wireless charging or fast wireless charging, and the first designated wireless power magnitude may correspond to ultra-fast wireless charging.

[0075] Figure 5 3 is a top view illustrating a situation where the wireless charging transmitter 302 according to the embodiment is charging a similar electronic device.

[0076] exist Figure 5 In the embodiment of the present invention, the wireless charging transmitter 302 (eg, Figure 1 In the example, the two devices 510 and 520 being charged simultaneously by the first charging pad 410 and the second charging pad 420, respectively, may be portable terminals such as smart phones. Here, similar electronic devices may mean devices belonging to the same class (i.e., smart phones). Devices belonging to the same class may request the same or similar amount of power from the wireless charging transmitter 302.

[0077] According to an embodiment, the control circuit 312 of the wireless charging transmitter 302 may adjust the wireless power based on the wireless charging configuration of the first external electronic device 510 and / or the second external electronic device 520. For example, the wireless charging transmitter 302 may exchange identification information with the first external electronic device 510 and the second external electronic device 520 via the wireless charging circuit, and adjust the wireless power based thereon.

[0078] According to an embodiment, the first external electronic device 510 and the second external electronic device 520 may both be electronic devices that require relatively high power. For example, the first external electronic device 510 or the second external electronic device 520 may be charged via normal wireless charging or fast wireless charging, which requires more power than normal wireless charging. According to an embodiment, the first external electronic device 510 or the second external electronic device 520 may be charged within a specific power range. According to an embodiment, the first external electronic device 510 or the second external electronic device 520 may be charged via ultra-fast wireless charging, which requires more power than fast wireless charging.

[0079] According to an embodiment, the control circuit 312 of the wireless charging transmitter may transmit information related to a specified wireless power corresponding to the type of the first external electronic device 510 or the second external electronic device 520 based on the wireless charging configuration of the first external electronic device 510 or the second external electronic device 520. For example, the first external electronic device 510 or the second external electronic device 520 may perform in-band communication with the wireless charging transmitter 302 according to a specified standard (e.g., the Wireless Power Consortium (WPC) standard) to exchange information necessary for wireless power transmission. According to the WPC standard, wireless charging may include a ping phase, an identification and configuration phase, and a power transmission phase. According to an embodiment, in the ping phase, it is determined whether the first external electronic device 510 or the second external electronic device 520 is placed on a charging pad, for example, whether the first external electronic device 510 or the second external electronic device 520 is near the wireless charging transmitter 302. According to an embodiment, in the identification and configuration phase, the wireless charging transmitter 302 determines the power transmission amount through in-band communication with the first external electronic device 510 or the second external electronic device 520, for example, the first external electronic device 510 or the second external electronic device 520 determines their designated wireless power to be transmitted by the wireless charging transmitter 302. According to an embodiment, in the power transmission phase, the designated wireless power is transmitted, for example, the wireless charging transmitter 302 transmits the determined wireless power (for example, power corresponding to normal wireless charging) to the first external electronic device 510 or the second external electronic device 520.

[0080] According to an embodiment, the control circuit 312 of the wireless charging transmitter 302 may adjust the wireless power based on the type of the first external electronic device 510 and / or the second external electronic device 520 .

[0081] According to an embodiment, if both the first external electronic device 510 and the second external electronic device 520 request relatively high wireless charging power, the control circuit 312 of the wireless charging transmitter 302 may control the first charging pad 410 to supply wireless power of a second designated wireless power size that is smaller than the first designated wireless power size. According to an embodiment, upon detecting that the first external electronic device 510 and the second external electronic device 520 are placed on the charging pad at the same time, the control circuit 312 of the wireless charging transmitter 302 may send a command requesting wireless charging at the second designated wireless power size instead of the first designated wireless power size to both the first external electronic device 510 and the second external electronic device 520. Therefore, the first external electronic device 510 or the second external electronic device 520 can be wirelessly charged at the second designated wireless power size.

[0082] Figure 63 is a top view illustrating a situation where the wireless charging transmitter 302 according to the embodiment is charging different electronic devices at the same time.

[0083] exist Figure 6 In an embodiment of the present invention, the wireless charging transmitter 302 may charge different electronic devices at the same time. Here, different electronic devices may refer to devices belonging to different categories (e.g., smart phones, wearable devices). Devices belonging to different categories may request different amounts of power from the wireless charging transmitter 302. For example, the wireless charging transmitter 302 may detect that the first external electronic device 510 is a portable terminal and is placed on the first charging pad 410, and the third external electronic device 530 is a wearable device and is placed on the second charging pad 420. Therefore, wireless power of different power sizes may be configured to be supplied to the first external electronic device 510 and the third external electronic device 530 at the same time. For example, the wireless charging transmitter 302 may supply a first specified wireless power size to the first external electronic device 510, and supply a third specified wireless power size that is smaller than the second specified wireless power size to the third external electronic device 530.

[0084] According to an embodiment, the first external electronic device 510 may be capable of charging with relatively high power, while the third external electronic device 530 may be capable of charging only with relatively low power. According to an embodiment, the control circuit 312 of the wireless charging transmitter 302 may transmit power at a specified wireless power size corresponding to the type of the first external electronic device 510 or the third external electronic device 530. For example, as part of the wireless charging configuration operation, the first external electronic device 510 or the third external electronic device 530 may perform in-band communication with the wireless charging transmitter 302 according to a specified standard (e.g., WPC standard). In this operation, information necessary for wireless power transmission is exchanged.

[0085] According to the disclosed embodiment, the wireless charging transmitter 302 includes: a first charging pad 410 having a first wireless power circuit 411; a second charging pad 420 having a second wireless power circuit 421; and a control circuit 312 electrically connected to the first wireless power circuit 411 and the second wireless power circuit 421. The control circuit 312 is configured to transmit a first specified wireless power magnitude via the first wireless power circuit after completing an authentication process with the first electronic device for a specified protocol in response to detecting that the first electronic device is placed on the first charging pad, transmit a first command to reduce the power transmitted to the first electronic device in response to detecting that the second electronic device is placed on the second charging pad while transmitting the first specified wireless power magnitude via the first wireless power circuit, wherein the second electronic device requests the same or similar amount of power as the first electronic device, and transmit the second specified wireless power magnitude via the first wireless power circuit and the second wireless power circuit after receiving a first request for a second specified wireless power magnitude from the first electronic device in response to the first command. The control circuit 312 may also be configured to, in response to detecting the detachment of the second electronic device while transmitting power of the second specified wireless power size via the first wireless power circuit and the second wireless power circuit, send a second command to increase the power transmitted to the first electronic device, and when receiving a second request for power of the first specified wireless power size from the first electronic device in response to the second command, transmit power of the first specified wireless power size via the first wireless power circuit. The control circuit 312 may also be configured to, in response to detecting the replacement of the second electronic device on the second charging pad by the third electronic device while transmitting power of the first specified wireless power size via the first wireless power circuit, maintain the transmission of power of the first specified wireless power size via the first wireless power circuit, and transmit power of a third specified wireless power size smaller than the second specified wireless power size via the second wireless power circuit. The control circuit 312 may also be configured to, in response to detecting that the second electronic device is placed alone on the second charging pad, transmit power of a second specified wireless power size via the second wireless power circuit, in response to detecting that the first electronic device is placed on the first charging pad while transmitting power of the second specified wireless power size via the second wireless power circuit, send a third command requesting the transmission of power of the second specified wireless power size to the first electronic device, and upon receiving a third request for power of the second specified wireless power size from the first electronic device in response to the third command, transmit power of the second specified wireless power size via the first wireless power circuit and the second wireless power circuit.

[0086] According to the disclosed embodiment, the wireless charging transmitter 302 includes: a first charging pad 410 having a first wireless power circuit 411; a second charging pad 420 having a second wireless power circuit 421; and a control circuit 312 electrically connected to the first wireless power circuit 411 and the second wireless power circuit 421. The control circuit 312 is configured to, in response to detecting a wireless charging receiver on the second charging pad, transmit power of a specified wireless power size requested by the wireless charging receiver placed on the second charging pad via the second wireless power circuit, regardless of whether another wireless charging receiver is placed on the first charging pad, and in response to detecting that the first electronic device is placed on the first charging pad, send a command requesting adjustment of the wireless charging power to the first electronic device when the wireless charging receiver is placed on the second charging pad. The control circuit 312 may also be configured to, when the first electronic device is placed alone on the first charging pad, transmit a first specified wireless power amount of power via the first wireless power circuit after completing an authentication process with the first electronic device for a specified protocol, send a first command to reduce the power transmitted to the first electronic device in response to detecting that the second electronic device is placed on the second charging pad while transmitting the first specified wireless power amount of power via the first wireless power circuit, wherein the second electronic device requests the same or similar amount of power as the first electronic device, and transmit a second specified wireless power amount of power via the first wireless power circuit and the second wireless power circuit when a first request for a second specified wireless power amount of power is received from the first electronic device in response to the first command. The control circuit 312 may also be configured to, in response to detecting that the second electronic device is detached while transmitting the second specified wireless power amount of power via the first wireless power circuit and the second wireless power circuit, transmit a second command to increase the power transmitted to the first electronic device, and transmit a second specified wireless power amount of power via the first wireless power circuit when a second request for a first specified wireless power amount of power is received from the first electronic device in response to the second command. The control circuit 312 may also be configured to detect that the second electronic device on the second charging pad is replaced by a third electronic device while transmitting power of a first specified wireless power size via the first wireless power circuit, maintain the transmission of power of the first specified wireless power size via the first wireless power circuit, and transmit power of a third specified wireless power size via the second wireless power circuit.The control circuit 312 may also be configured to, in response to detecting that the second electronic device is placed alone on the second charging pad, transmit power of a second specified wireless power size via the second wireless power circuit, in response to detecting that the first electronic device is placed on the first charging pad while transmitting power of the second specified wireless power size via the second wireless power circuit, send a third command requesting the transmission of power of the second specified wireless power size to the first electronic device, and upon receiving a third request for power of the second specified wireless power size from the first electronic device in response to the third command, transmit power of the second specified wireless power size via the first wireless power circuit and the second wireless power circuit.

[0087] According to the disclosed embodiments, an electronic device (e.g., a first electronic device 510) may include a battery, a coil, a receiving circuit electrically connected to the coil, a charger for controlling a battery charging state based on a voltage supplied from the receiving circuit, and a processor operatively connected to the receiving circuit and the charger. The processor is configured to, in response to detecting that the electronic device is placed alone on a wireless charging transmitter having a plurality of charging pads, wirelessly charge with a first specified wireless power magnitude based on a result of an authentication process performed with the wireless charging transmitter for a specified protocol, receive a first command to reduce power from the wireless charging transmitter while charging with the first specified wireless power magnitude, and, in response to receiving the first command, send a request to the wireless charging transmitter to change the power transmitted to the electronic device from the first specified wireless power magnitude to a second specified wireless power magnitude smaller than the first specified wireless power magnitude.

[0088] A wireless power transmission method of a wireless charging transmitter 302 including a first charging pad 410 including a first wireless power circuit 411 and a second charging pad 420 including a second wireless power circuit 421 may include: in response to detecting that a wireless charging receiver is placed on the second charging pad, sending power of a specified wireless power size requested by the wireless charging receiver to the second charging pad via the second wireless power circuit, regardless of whether another wireless charging receiver is placed on the first charging pad; and in response to detecting that a first electronic device is placed on the first charging pad, sending a command requesting adjustment of the wireless charging power to the first electronic device when the wireless charging receiver is placed on the second charging pad. The method may include, when the first electronic device is placed alone on the first charging pad, transmitting a first specified wireless power amount of power via the first wireless power circuit after completing an authentication process with the first electronic device for a specified protocol; in response to detecting that a second electronic device is placed on the second charging pad while transmitting the first specified wireless power amount of power via the first wireless power circuit, sending a first command to reduce the power transmitted to the first electronic device, wherein the second electronic device requests the same or similar amount of power as the first electronic device; and upon receiving a first request for a second specified wireless power amount of power from the first electronic device in response to the first command, transmitting a second specified wireless power amount of power via the first wireless power circuit and the second wireless power circuit. The method may include, in response to detecting that the second electronic device is detached while transmitting the second specified wireless power amount of power via the first wireless power circuit and the second wireless power circuit, transmitting a second command to increase the power transmitted to the first electronic device; and upon receiving a second request for the first specified wireless power amount of power from the first electronic device in response to the second command, transmitting the first specified wireless power amount of power via the first wireless power circuit. The method may include, in response to detecting that a second electronic device on a second charging pad is replaced by a third electronic device while transmitting a first specified wireless power size via a first wireless power circuit, maintaining the transmission of the first specified wireless power size via the first wireless power circuit; and transmitting a third specified wireless power size via the second wireless power circuit. The method may include, in response to detecting that the second electronic device is placed alone on the second charging pad, transmitting a second specified wireless power size via the second wireless power circuit; in response to detecting that the first electronic device is placed on the first charging pad while transmitting the second specified wireless power size via the second wireless power circuit, sending a third command requesting the transmission of the second specified wireless power size to the first electronic device; and upon receiving a third request for the second specified wireless power size from the first electronic device in response to the third command, transmitting the second specified wireless power size via the first wireless power circuit and the second wireless power circuit.

[0089] Figure 7 is a signal flow diagram 700 illustrating an electronic device authentication process according to an embodiment.

[0090] Reference Figure 7 , the authentication initiator 701 and the authentication responder 703 exchange authentication data. In one embodiment, an external electronic device such as a portable terminal (e.g., Figure 1 The electronic device 101 in the example may become the authentication initiator 701, and the electronic device 102 such as the wireless charging transmitter 302 (eg, Figure 1 102) may become the authentication responder 703. Alternatively, in another embodiment, the external electronic device 101 such as a portable terminal (or a wearable device) may become the authentication responder 703, and the electronic device 102 such as a wireless charging transmitter may become the authentication initiator 701. In the disclosed embodiment, the description is made for the external electronic device 101 such as a portable terminal being the authentication initiator 701 and the electronic device 102 such as a wireless charging transmitter being the authentication responder 703.

[0091] exist Figure 7 In an embodiment of the present invention, operations 710 to 730 may be a first authentication phase, i.e., a configuration process for wireless charging with a first specified wireless power size, and operations 740 to 760 may be a second authentication phase, i.e., a configuration process or an authentication process for wireless charging with a second specified wireless power size. For example, the first authentication phase of operations 710 to 730 may be a configuration process for performing normal wireless charging, and the second authentication phase of operations 740 to 760 may be a configuration process for performing fast wireless charging. For another example, the first authentication phase of operations 710 to 730 may be a configuration process for performing fast wireless charging, and the second authentication phase of operations 740 to 760 may be a configuration process or an authentication process for performing ultra-fast wireless charging. According to an embodiment, although not shown in the drawings, if the first authentication phase of operations 710 to 730 is a configuration process for performing fast wireless charging, the configuration process for performing normal wireless charging may be performed before the first authentication phase of operations 710 to 730.

[0092] exist Figure 7 In the embodiment of the present invention, at least a portion of the first authentication phase of operations 710 to 730 may be omitted, and at least a portion of the second authentication phase of operations 740 to 760 may be omitted.

[0093] According to an embodiment, the first authentication phase of operations 710 to 730 may include performing in-band communication between the authentication initiator 701 and the authentication responder 703 according to a specified standard (eg, WPC standard) so that information required for wireless power transmission is exchanged.

[0094] According to an embodiment, in operation 710, the authentication initiator 701 (e.g., an electronic device) may request identification information and / or wireless charging configuration information from the authentication responder 703 (e.g., a wireless charging transmitter). For example, the identification information may include version information, a manufacturing code, or a basic device identifier. The configuration information may include a wireless charging frequency, a maximum allowed charging power, a required charging power amount, and / or an average power transfer amount.

[0095] According to an embodiment, in operation 720, the authentication responder 703 (e.g., a wireless charging transmitter) may send identification information and / or configuration information to the authentication initiator 701 (e.g., an electronic device). The authentication responder 703 may create a power transmission contract for charging the authentication initiator 701 based on at least part of the transmitted identification information and / or configuration information. For example, the power transmission contract may include restrictions for determining power transmission characteristics. These restrictions may include version information of the power transmission contract, identification information of the authentication responder 703 or its manufacturer, power level, predicted maximum power information, option configuration, time information of average received power, or a method for determining the main unit current of the authentication responder 703.

[0096] According to an embodiment, additional information may be transmitted between the authentication initiator 701 and the authentication responder 703. For example, the authentication responder 703 (e.g., a wireless charging transmitter) may send identification information or configuration information to the authentication initiator 701 (e.g., an electronic device), and the authentication initiator 701 (e.g., an electronic device) may request to change the charging power amount based on the received configuration information. In another embodiment, the authentication initiator 701 (e.g., an electronic device) may request the authentication responder 703 (e.g., a wireless charging transmitter) for identification information or configuration information for fast charging, and the authentication responder 703 (e.g., a wireless charging transmitter) may change the amount of power to be sent according to the request. For another example, the authentication initiator 701 (e.g., an electronic device) may request to control power transmission based on the identification information or configuration information sent by the authentication responder 703 (e.g., a wireless charging transmitter), and the authentication responder 703 (e.g., a wireless charging transmitter) may configure (change) the amount of power.

[0097] According to an embodiment, in operation 730, the authentication initiator 701 (e.g., an electronic device) may determine whether wireless charging is available based on identification information and / or wireless charging configuration information received from the authentication responder 703 (e.g., a wireless charging transmitter). The authentication initiator 701 (e.g., an electronic device) may verify the wireless charging availability and complete the first authentication.

[0098] According to an embodiment, in operation 740, the authentication initiator 701 may request the authentication responder 703 to perform a second authentication as an encryption authentication for ultra-fast wireless charging. According to an embodiment, the second authentication may require higher security than the first authentication. For example, the second authentication may be performed by exchanging pre-agreed encryption information between the authentication initiator 701 and the authentication responder 703.

[0099] For example, the authentication initiator 701 may request the authentication responder 703 to send a certificate chain. The certificate chain may include public authentication message information corresponding to each root organization that provides an authentication security system (e.g., the Wireless Power Consortium (WPC)), a manufacturer authenticated by the root organization, and an individual product of the manufacturer (e.g., a wireless charging transmitter). Each public authentication message may be uniquely paired with a private authentication message encrypted via the authentication security system. The private authentication message may be used to encrypt or decrypt a single message data at each of the paired electronic devices (e.g., a power transmitter-power receiver pair) for authentication. That is, the certificate chain may include information about three public authentication messages. This certificate chain may be paired with three private authentication messages corresponding to the public authentication message. Because wireless charging authentication generates a large amount of certificate chain data, it may be necessary to segment the wireless charging authentication data to be sent.

[0100] According to an embodiment, the authentication responder 703 may send the certificate chain to the authentication initiator 701 in response to the second authentication request in operation 750. For example, the authentication responder 703 may send information about the certificate chain to the authentication initiator 701 by segmenting the wireless charging authentication data using various start tags and end tags.

[0101] According to an embodiment, the authentication initiator 701 may verify whether the received certificate chain is valid in operation 760. For example, if it is determined that the certificate chain is invalid, the authentication initiator 701 may determine that the second authentication has failed and will charge the authentication initiator 701 with low power (e.g., at a second specified wireless power size) from the authentication responder 703. In this way, the authentication initiator 701 may be charged in a normal wireless charging mode or a fast wireless charging mode. If it is determined that the certificate chain is valid, the authentication initiator 701 may be charged with high power (e.g., at a first specified wireless power size) from the authentication responder 703. In this way, the authentication initiator 701 may be charged in an ultra-fast wireless charging mode.

[0102] Figure 8 is a flowchart 800 illustrating a method of executing different power transmission / reception modes according to an authentication level of an electronic device according to an embodiment.

[0103] According to an embodiment, in operation 810, the electronic device 101 (e.g., a portable terminal) and the external electronic device 102 (e.g., a wireless charging transmitter) may determine whether the first authentication for wireless charging is completed. For example, the electronic device 101 may determine whether wireless charging is available based on identification information and / or wireless charging configuration information received from the external electronic device 102. The electronic device 101 may complete the first authentication by determining that wireless charging of the external electronic device 102 is available. The first authentication in operation 810 may be performed with Figure 7 The operations 710 to 730 are the same or similar.

[0104] According to an embodiment, if it is determined in operation 810 that the first authentication is completed (determination result=yes), the electronic device 101 (e.g., portable terminal) and the external electronic device 102 (e.g., wireless charging transmitter) enable a first wireless charging mode corresponding to a normal wireless charging mode or a fast wireless charging mode in operation 820. For example, the electronic device 101 may request the external electronic device 102 to transfer power of a second specified wireless power size (e.g., relatively low power).

[0105] According to an embodiment, the electronic device 101 may send a request for a second authentication for ultra-fast wireless charging to the external electronic device 102 in operation 830. The second authentication in operation 830 may be Figure 7 The operations 740 to 760 are the same or similar.

[0106] According to an embodiment, if it is determined in operation 830 that the second authentication for the ultra-fast wireless charging is completed (e.g., determination result=yes), the electronic device 101 (e.g., portable terminal) and the external electronic device 102 (e.g., wireless charging transmitter) enable the second wireless charging mode corresponding to the ultra-fast charging mode in operation 840. For example, the electronic device 101 may transmit a request to the external electronic device 102 to transfer power at a first specified wireless power magnitude (e.g., relatively high power).

[0107] According to an embodiment, if it is determined in operation 830 that the second authentication for ultra-fast wireless charging fails (e.g., determination result = no), the electronic device 101 (e.g., mobile terminal) and the external electronic device 102 may enable a first wireless charging mode corresponding to a normal wireless charging mode or a fast wireless charging mode in operation 820.

[0108] Fig. 9 1 is a top view for explaining the operation of the wireless charging transmitter 302 according to the embodiment according to a state where various wireless charging receivers are placed on a plurality of charging pads of the wireless charging transmitter 302 .

[0109] exist Fig. 9 In the embodiment, examples include: a first state in which the first external electronic device 510 is placed alone on the first charging pad 410 of the wireless charging transmitter 302; a second state in which the first external electronic device 510 is placed on the first charging pad 410 of the wireless charging transmitter 302, and a third external electronic device 530 different from the first external electronic device 510 is placed on the second charging pad 420 of the wireless charging transmitter 302; and a third state in which the first external electronic device 510 is placed on the first charging pad 410 of the wireless charging transmitter 302, and a second external electronic device 530 similar to the first external electronic device 510 is placed on the second charging pad 420 of the wireless charging transmitter 302.

[0110] First State 901

[0111] According to an embodiment, the wireless charging transmitter 302 may detect that the first external electronic device 510 is placed alone on the first charging pad 410. According to an embodiment, the control circuit 312 of the wireless charging transmitter 302 may perform an authentication process with the first external electronic device 510 for a specified protocol. For example, the authentication process for the specified protocol may be similar to the authentication process described in the referenced example. Figure 7According to an embodiment, the authentication process for the specified protocol may include, at the control circuit 312 of the wireless charging transmitter 302, initiating wireless charging of the first external electronic device 510 via the first charging pad 410, and performing additional authentication using encrypted information. According to an embodiment, if the authentication process for the specified protocol and the electronic device is completed, the wireless charging transmitter 302 may transmit power of the first specified wireless power magnitude via the first wireless power circuit 411 of the first charging pad 410. As a result, the first external electronic device 501 may be able to charge its battery in the ultra-fast wireless charging mode.

[0112] According to an embodiment, while transmitting power of a first specified wireless power magnitude via the first wireless power circuit 411 of the first charging pad 410, the wireless charging transmitter 302 may detect whether a device is placed on the second charging pad 420. For example, if a device is placed on the second charging pad 420, the control circuit 312 of the wireless charging transmitter 302 may adjust the power transmitted via the first wireless power circuit 411 based on the device placed on the second charging pad 420. For another example, if a device is placed on the second charging pad 420, the control circuit 312 of the wireless charging transmitter 302 may determine whether to change from the first state to the second state or the third state (such as the state of the device placed on the second charging pad 420). Fig. 9 ) and whether to adjust the power transmitted via the first wireless charging circuit 411 based on the transformed state (ie, the second state or the third state).

[0113] According to an embodiment, the operation of the wireless charging transmitter 302 to adjust the power transmitted via the first wireless power circuit 411 may be performed as follows. First, a first command to reduce the first specified wireless power size may be sent from the wireless charging transmitter 302 to the first external electronic device 510. Based on a response from the first external electronic device 510 as a reply to the first command, the power transmitted via the first wireless power circuit 411 may be changed from being at the first specified wireless power size to being at the second specified wireless power size. This may be done Fig. 9 The operation of the wireless charging transmitter 302 to adjust the power transmitted via the first wireless power circuit 411 can also be performed in such a way that the wireless charging transmitter 302 maintains the first specified wireless power magnitude transmitted via the first wireless power circuit 411. This can be done Fig. 9 The transition from the first state to the second state in .

[0114] Second State 902

[0115] According to an embodiment, the wireless charging transmitter 302 may detect that the first external electronic device 510 is placed on the first charging pad 410, and at the same time detect that the third external electronic device 530 is placed on the second charging pad 420. For example, the control circuit 312 of the wireless charging transmitter 302 may perform an authentication process with the first external electronic device 510 for a specified protocol. For example, the authentication process for the specified protocol may be similar to the authentication process described in the referenced example. Figure 7 The authentication process described is the same or similar. According to an embodiment, the authentication process for the specified protocol may include, at the control circuit 312 of the wireless charging transmitter 302, starting wireless charging of the first external electronic device 510 via the first charging pad 410, and performing additional authentication using encrypted information. According to an embodiment, if the authentication process for the specified protocol and the electronic device is completed, the wireless charging transmitter 302 may transmit power of a first specified wireless power size via the first wireless power circuit 411 of the first charging pad 410. As a result, the first external electronic device 501 is able to charge its battery in an ultra-fast wireless charging mode. According to an embodiment, while transmitting power of a first specified wireless power size via the first wireless power circuit 411 of the first charging pad 410, the wireless charging transmitter 302 may transmit power of a third specified wireless power size via the second wireless power circuit 421 of the second charging pad 420.

[0116] According to an embodiment, the wireless charging transmitter 302 may monitor to detect that the third external electronic device 530 placed on the second charging pad 420 is detached (e.g., transitioned from the second state to the first state) or the third external electronic device 530 placed on the second charging pad 420 is replaced by another device (e.g., the second external electronic device 520) (e.g., transitioned from the second state to the third state).

[0117] According to an embodiment, the wireless charging transmitter 302 may detect whether the third external electronic device 530 placed on the second charging pad 420 is detached (e.g., transitioned from the second state to the first state) or whether the charging power of the third external electronic device 530 placed on the second charging pad 420 is changed (e.g., transitioned from the second state to the third state).

[0118] According to an embodiment, if the third external electronic device 530 placed on the second charging pad 420 is detached (for example, transitioned from the second state to the first state), the wireless charging transmitter 302 may keep transmitting the first specified wireless power magnitude via the first charging pad 410 and terminate transmitting the third specified wireless power magnitude via the second charging pad 420.

[0119] According to an embodiment, if the third external electronic device 530 placed on the second charging pad 420 is replaced by another device (e.g., the second external electronic device 520) (e.g., transitioned from the second state to the third state), the wireless charging transmitter 302 may reduce the power transmitted via the first wireless power circuit 411 from the first designated wireless power magnitude to the second designated wireless power magnitude, and may transmit power of a fourth designated wireless power magnitude corresponding to the second external electronic device 520 via the second wireless power circuit 421. For example, the fourth designated wireless power magnitude may be the same as or similar to the second designated wireless power magnitude.

[0120] According to an embodiment, if a transition from the second state to the third state occurs when the third external electronic device 530 placed on the second charging pad 420 is replaced by another device (for example, the second external electronic device 520), or the charging power of the third external electronic device 530 changes, the wireless charging transmitter 302 may send a first command to reduce power to the first external electronic device 510, and based on a response from the first external electronic device 510 as a reply to the first command, change the power being transmitted to the first external electronic device 510 from the first specified wireless power size to the second specified wireless power size.

[0121] Third State 903

[0122] According to an embodiment, the wireless charging transmitter 302 may detect that the first external electronic device 510 is placed on the first charging pad 410, and at the same time detect that the second external electronic device 520 is placed on the second charging pad 420. For example, the control circuit 312 of the wireless charging transmitter 302 may perform an authentication process with the first external electronic device 510 for a specified protocol. For example, the authentication process for the specified protocol may be similar to the authentication process described in the referenced example. Figure 7The authentication process described is the same or similar. According to an embodiment, the authentication process for the specified protocol may include, at the control circuit 312 of the wireless charging transmitter 302, starting wireless charging of the first external electronic device 510 via the first charging pad 410, and performing additional authentication using encrypted information. According to an embodiment, even if the authentication process for the specified protocol and the electronic device is completed, the wireless charging transmitter 302 may transmit power of the second specified wireless power size via the first wireless power circuit 411 of the first charging pad 410. As a result, the first external electronic device 510 may be able to charge its battery in a fast wireless charging mode or a normal wireless charging mode. According to an embodiment, while transmitting power of the second specified wireless power size via the first wireless power circuit 411 of the first charging pad 410, the wireless charging transmitter 302 may transmit power of a fourth specified wireless power size via the second wireless power circuit 421 of the second charging pad 420. For example, the fourth specified wireless power size may be the same or similar to the second specified wireless power size. As a result, the second external electronic device 520 may charge its battery in a fast wireless charging mode or a normal wireless charging mode.

[0123] According to an embodiment, the wireless charging transmitter 302 may monitor to detect that the second external electronic device 520 placed on the second charging pad 420 is detached (e.g., transitioned from the third state to the first state) or the second external electronic device 520 placed on the second charging pad is replaced by another device (e.g., the third external electronic device 530) (e.g., transitioned from the third state to the second state).

[0124] According to an embodiment, if the second external electronic device 520 placed on the second charging pad 420 is detached (for example, transitioned from the third state to the first state), the wireless charging transmitter 302 may send a second command to increase power to the first external electronic device 510, and based on a response from the first external electronic device 510 as a reply to the second command, change the power transmitted to the first external electronic device 510 from the second specified wireless power size to the first specified wireless power size.

[0125] According to an embodiment, if the second external electronic device 520 placed on the second charging pad 420 is replaced by another device (e.g., the third external electronic device 530) (e.g., changed from the third state to the second state), the wireless charging transmitter 302 may send a second command to increase power to the first external electronic device 510, and based on a response from the first external electronic device 510 as a reply to the second command, change the power transmitted to the first external electronic device 510 from being in the second specified wireless power magnitude to the first specified wireless power magnitude. As a result, the first external electronic device 510 can charge its battery in the ultra-fast wireless charging mode. In addition, the wireless charging transmitter 302 may transmit power of the third specified wireless power magnitude to the third external electronic device 530 via the second wireless power circuit 421.

[0126] According to an embodiment, the wireless charging transmitter 302 may be based on an external electronic device (eg, Fig. 9 510, 520 or 530) in the electronic device, and an external electronic device (eg, Fig. 9 The type of electronic device 510, 520 or 530 in the embodiment may be used to adjust the power delivered. For example, even when the external electronic device (e.g., Fig. 9 The battery of the electronic device 510, 520 or 530) is fully charged or the external electronic device (e.g., Fig. 9 When the charging mode of the electronic device 510, 520 or 530 in the example is changed based on the user input, the external electronic device (eg, Fig. 9 The state of the electronic device 510, 520 or 530) in the control unit will also change.

[0127] According to an embodiment, the wireless charging transmitter 302 may detect whether the battery of the external electronic device 510 is fully charged or whether the charging mode of the external electronic device 510 is changed to the normal charging mode or the fast charging mode based on the user input while transmitting the power of the first designated wireless power size via the first charging pad 410, for example, in the first state 901 or the second state 902. After detecting the state transition of the first external electronic device 510, the wireless charging transmitter 302 may transmit a first command to reduce power to the first external electronic device 510, and change the power transmitted to the first external electronic device 510 from being in the first designated wireless power size to the second designated wireless power size based on a response from the first external electronic device 510 as a reply to the first command.

[0128] According to another embodiment, if the wireless charging transmitter 320 detects that the battery of the second external electronic device 520 is fully charged or overheated in the third state 903, it may stop transmitting power of the second specified wireless power size via the second charging pad 420, send a second command to increase power to the first external electronic device 510, and based on a response from the first external electronic device 510 as a reply to the second command, change the power transmitted to the first external electronic device 510 from the second specified wireless power size to the first specified wireless power size.

[0129] Fig.10 is a flowchart illustrating the operation of an electronic device according to the disclosed embodiment.

[0130] exist Fig.10 In the embodiment of the present invention, in operation 1011 and operation 1012, the electronic device placed alone on the first charging pad 410 of the wireless charging transmitter 302 may perform an authentication process for fast wireless charging. According to an embodiment, the control circuit 312 of the wireless charging transmitter 302 may perform an authentication process with the first external electronic device 510 for a specified protocol. For example, the authentication process for the specified protocol may be performed with reference to Figure 7 According to an embodiment, the authentication process for the specified protocol may include wirelessly charging the first external electronic device 510 via the first charging pad 410 under the control of the control circuit 312 of the wireless charging transmitter 302, and may include additional authentication using encrypted information.

[0131] According to an embodiment, if the authentication process performed with the wireless charging transmitter 302 for the specified protocol is successful (for example, the determination result in operation 1012 = yes), the electronic device may charge its battery in the ultra-fast wireless charging mode in operation 1013 using power of the first specified wireless power size transmitted via the first wireless power circuit 411 of the first charging pad 410.

[0132] According to an embodiment, if the authentication process performed with the wireless charging transmitter 302 for the specified protocol fails (for example, the determination result in operation 1012 = No), the electronic device may send a request for power transmission of a second specified wireless power size to the wireless charging transmitter 302 in operation 1014, and charge its battery with power of the second specified wireless power size transmitted via the first wireless power circuit 411 of the first charging pad 410 in the fast wireless charging mode or the normal wireless charging mode.

[0133] According to an embodiment, while the electronic device charges its battery with power of the first designated wireless power size from the wireless charging transmitter 302 in the ultra-fast wireless charging mode, the electronic device may detect that another electronic device is placed on the wireless charging transmitter 302 in operations 1015 and 1016. For example, the electronic device may determine that another electronic device is placed on the wireless charging transmitter 302 based on receiving data from the wireless charging transmitter 302.

[0134] According to an embodiment, in operation 1016 , the electronic device checks the type of other electronic devices placed on the charging pad 302 , and in operation 1017 , the electronic device determines whether to adjust its battery charging power based on the type of the other electronic devices.

[0135] According to an embodiment, the wireless charging transmitter 302 may be based on various external electronic devices (eg, Fig. 9 The manner in which the electronic device 510, 520 or 530 in the embodiment is placed on the charging pad and the external electronic device (e.g. Fig. 9 The type of electronic device 510, 520 or 530 in the external electronic device is used to adjust the power transmitted to the external electronic device. For example, even when the external electronic device (e.g., Fig. 9 The battery of the electronic device 510, 520 or 530 in the embodiment is fully charged or the external electronic device is in an overheated state or the external electronic device (e.g., Fig. 9 When the charging mode of the electronic device 510, 520 or 530 in the example is changed based on the user input, the external electronic device (eg, Fig. 9 The state of the electronic device 510, 520 or 530) in the control unit may also be changed.

[0136] According to an embodiment, if a first command to reduce the charging power is received from the wireless charging transmitter 302, the electronic device determines that other electronic devices placed on the wireless charging transmitter 302 are similar to the electronic device, sends a request to the wireless charging transmitter 302 to transmit power of a second specified wireless power size, and charges its battery with power of the second specified wireless power size (i.e., charging in the first wireless charging mode or the normal wireless charging mode).

[0137] According to an embodiment, in operation 1018, the electronic device may detect the detachment of other electronic devices while charging its own battery in the fast wireless charging mode or the normal wireless charging mode. For example, if the second command to increase the wireless power is received from the wireless charging transmitter 302, the electronic device determines that the other electronic device placed on the wireless charging transmitter 302 is detached (for example, the determination result of operation 1018 = yes). If so, the electronic device sends a request to the wireless charging transmitter 302 to transmit power of the first specified wireless power size in operation 1013, and charges its own battery with power of the first specified wireless power size transmitted via the first wireless power circuit 411 of the first charging pad 410 in the ultra-fast wireless charging mode.

[0138] Fig.11 is a signal flow diagram illustrating the operation of a wireless charging system according to the disclosed embodiments.

[0139] exist Fig.11 In the embodiment of the present invention, if the first external electronic device 510 is placed on the first charging pad 410 of the wireless charging transmitter 302, the first wireless power circuit 411 may detect the placement of the first external electronic device 510 in operation 1101 and send a signal indicating the placement of the first external electronic device 510 to the control circuit 312 in operation 1103.

[0140] According to an embodiment, in operations 1105 and 1107, the control circuit 312 of the wireless charging transmitter 302 may perform an authentication process with the first external electronic device 510 for a specified protocol after receiving a signal indicating placement of the first external electronic device 510. For example, the authentication process for the specified protocol may be performed with reference to Figure 7 The authentication process described is the same or similar. According to an embodiment, the authentication process for a specified protocol may include performing wireless charging on the first external electronic device 510 via the first charging pad 410, and performing additional authentication using encrypted information.

[0141] According to an embodiment, if the authentication process with the first external electronic device 510 for the designated protocol is completed, the control circuit 312 of the wireless charging transmitter 302 may transmit power of the first designated wireless power magnitude via the first wireless power circuit 411 of the first charging pad 410 in operations 1109 and 1111. As a result, the first external electronic device 501 may charge its battery in the ultra-fast wireless charging mode.

[0142] According to an embodiment, if the second external electronic device 520 is placed on the second charging pad 420 of the wireless charging transmitter 302, the second wireless power circuit 421 may detect the placement of the second external electronic device 520 in operation 1113, and transmit a signal indicating the placement of the second external electronic device 520 to the control circuit 312 in operation 1115. For example, the second external electronic device 520 may be a device that requires the same power as the first external electronic device 510. For example, the second external electronic device 520 may be similar to the first external electronic device 510. This may mean that the second external electronic device 520 may be a device that can be charged with relatively high power like the first external electronic device 510.

[0143] According to an embodiment, in operation 1117 , upon detecting that the second external electronic device 520 is placed on the second charging pad 420 , the control circuit 312 of the wireless charging transmitter 302 may transmit a first command to reduce wireless power to the first external electronic device 510 .

[0144] According to an embodiment, in operations 1119 and 1121, the control circuit 312 of the wireless charging transmitter 302 may change the power transmitted to the first electronic device from the first specified wireless power size to the second specified wireless power size based on the response from the first external electronic device 510 as a reply to the first command. As a result, the first external electronic device 510 may charge its battery in the fast wireless charging mode or the normal wireless charging mode.

[0145] According to an embodiment, in operations 1123 and 1125, the control circuit 312 of the wireless charging transmitter 302 may send a request for configuration of a fourth designated wireless power size to the second external electronic device 520, and after receiving a response from the second external electronic device 520 in response to the request, transmit power of the fourth designated wireless power size. For example, the fourth designated wireless power size may be the same as or similar to the second designated wireless power size. As a result, the second external electronic device 520 may charge its battery in the fast wireless charging mode or the normal wireless charging mode.

[0146] According to an embodiment, if the second external electronic device 520 detaches from the second charging pad 420 of the wireless charging transmitter 302, the second wireless power circuit 421 may detect the detachment of the second external electronic device 520 in operation 1127 and send a signal indicating the detachment of the second external electronic device 520 to the control circuit 312 in operation 1129.

[0147] According to an embodiment, in operation 1131 , upon detecting that the second external electronic device 520 is detached from the second charging pad 420 , the control circuit 312 of the wireless charging transmitter 302 may transmit a second command to increase wireless power to the first external electronic device 510 .

[0148] According to an embodiment, in operations 1133 and 1135, the control circuit 312 of the wireless charging transmitter 302 may change the power transmitted to the first external electronic device 510 from the second designated wireless power magnitude to the first designated wireless power magnitude based on a response from the first external electronic device 510 as a reply to the second command. As a result, the first external electronic device 510 may charge its battery in the ultra-fast wireless charging mode.

[0149] Fig.12 is a signal flow diagram illustrating the operation of a wireless charging system according to another disclosed embodiment.

[0150] exist Fig.12 In the embodiment of the present invention, if the second external electronic device 520 is placed on the second charging pad 420 of the wireless charging transmitter 302, the second wireless power circuit 421 may detect the placement of the second external electronic device 520 in operation 1201, and transmit a signal indicating the placement of the second external electronic device 520 to the control circuit 312 in operation 1203. For example, the second external electronic device 520 may be a device that can be charged with relatively high power.

[0151] According to an embodiment, in operations 1205 and 1207, the control circuit 312 of the wireless charging transmitter 302 may send a request for configuration of a fourth specified wireless power size to the second external electronic device 520, and transmit power of the fourth specified wireless power size after receiving a response from the second external electronic device 520 in reply to the request. As a result, the second external electronic device 520 may charge its battery in the fast wireless charging mode or the normal wireless charging mode.

[0152] According to an embodiment, if the first external electronic device 510 is placed on the first charging pad 410 of the wireless charging transmitter 302, the first wireless power circuit 411 may detect in operation 1209 that the first external electronic device 510 is placed on the first charging pad 410, and send a signal indicating the placement of the first external electronic device 510 to the control circuit 312 in operation 1211.

[0153] According to an embodiment, in operations 1213 and 1215, the control circuit 312 of the wireless charging transmitter 302 may perform an authentication process with the first external electronic device 510 for a specified protocol after receiving a signal indicating placement of the first external electronic device 510. For example, the authentication process for the specified protocol may be performed with reference to Figure 7 The authentication process described is the same or similar. According to an embodiment, the authentication process for a specified protocol may include performing wireless charging of the first external electronic device 510 via the first charging pad 410, or performing additional authentication using encrypted information.

[0154] According to an embodiment, if the authentication process with the first external electronic device 510 for the designated protocol is completed, the control circuit 312 of the wireless charging transmitter 302 may transmit power of the second designated wireless power size via the first wireless power circuit 411 of the first charging pad 410 in operations 1217 and 1221. As a result, the first external electronic device 510 may charge its battery in the fast wireless charging mode or the normal wireless charging mode. That is, even after the authentication process with the first external electronic device 510 is completed, the control circuit 312 of the wireless charging transmitter 302 may transmit power of the second designated wireless power size via the first wireless power circuit 411 of the first charging pad 410. As a result, the first external electronic device 510 may charge its battery in the fast wireless charging mode or the normal wireless charging mode.

[0155] According to an embodiment, if the second external electronic device 520 detaches from the second charging pad 420 of the wireless charging transmitter 302, the second wireless power circuit 421 may detect the detachment of the second external electronic device 520 in operation 1223 and send a signal indicating the detachment of the second external electronic device 520 to the control circuit 312 in operation 1225.

[0156] According to an embodiment, in operation 1227 , upon detecting that the second external electronic device 520 is detached from the second charging pad 420 , the control circuit 312 of the wireless charging transmitter 302 may transmit a second command to increase wireless power to the first external electronic device 510 .

[0157] According to an embodiment, in operations 1229 and 1231, the control circuit 312 of the wireless charging transmitter 302 may change the power transmitted to the first external electronic device 510 from the second specified wireless power magnitude to the first specified wireless power magnitude based on a response from the first external electronic device 510 as a reply to the second command. As a result, the first external electronic device 510 can charge its battery in the ultra-fast wireless charging mode.

[0158] As described above, the wireless charging transmitter and method of the disclosed embodiments have the advantage of making wireless charging convenient and stable by determining the reception power size of the electronic device based on at least the presence / absence of the electronic device placed on the charging pad, the type of the electronic device placed on the charging pad, and the margin of available power.

[0159] 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 an embodiment of the present disclosure, the electronic device is not limited to those electronic devices described above.

[0160] It should be understood that the various embodiments of the present disclosure and the terms used therein are not intended to limit the technical features set forth herein to specific embodiments, but include various changes, equivalent forms or alternative forms for the corresponding embodiments. For the description of the accompanying drawings, similar reference numerals may be used to refer to similar or related elements. It will be understood that the nouns in the singular form corresponding to the term may include one or more things unless the relevant context clearly indicates otherwise. As used herein, each 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 one or all possible combinations of the items listed together with the corresponding one of the multiple phrases. As used herein, terms such as "1st" and "2nd" or "first" and "second" may be used to simply distinguish the corresponding component from another component, and do not limit the component in other aspects (e.g., importance or order). It will be understood that if an element (e.g., a first element) is referred to as being “combined with another element (e.g., the second element)”, “combined to another element (e.g., the second element)”, “connected with another element (e.g., the second element)”, or “connected to another element (e.g., the second element)” when the terms “operably” or “communicatively” are used or when the terms “operably” or “communicatively” are not used, it means that the element may be directly (e.g., wired) connected to the other element, wirelessly connected to the other element, or connected to the other element via a third element.

[0161] As used herein, the term "module" may include units implemented in hardware, software, or firmware, and may be used interchangeably with other terms (e.g., "logic," "logic block," "portion," or "circuit"). A module may be a single integrated component adapted to perform one or more functions or a minimum 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).

[0162] The various embodiments described herein may be implemented as software (e.g., program 140) including one or more instructions stored in a storage medium (e.g., internal memory 136 or external memory 138) that can be read by a machine (e.g., electronic device 101). For example, under the control of a processor, a processor (e.g., processor 120) of the machine (e.g., electronic device 101) may call at least one of the one or more instructions stored in the storage medium and execute the at least one instruction with or without the use of one or more other components. This enables the machine to operate to perform at least one function according to the at least one instruction called. The one or more instructions may include code generated by a compiler or code that can be run by an interpreter. A machine-readable storage medium may be provided in the form of a non-transitory storage medium. Among them, the term "non-transitory" only means that the storage medium is a tangible device and does not include a signal (e.g., an electromagnetic wave), but the term does not distinguish between data being semi-permanently stored in a storage medium and data being temporarily stored in a storage medium.

[0163] According to an embodiment, the method according to various embodiments of the present disclosure may be included and provided in a computer program product. The computer program product may be traded between a seller and a buyer as a product. The computer program product may be released in the form of a machine-readable storage medium (e.g., a compact disk read-only memory (CD-ROM)), or may be downloaded via an application store (e.g., Play Store TM ) The computer program product may be published (e.g., downloaded or uploaded) online, or the computer program product may be distributed (e.g., downloaded or uploaded) directly between two user devices (e.g., smart phones). If published online, at least part of the computer program product may be temporarily generated, or at least part of the computer program product may be at least temporarily stored in a machine-readable storage medium (such as a memory of a manufacturer's server, an application store's server, or a forwarding server).

[0164] According to various embodiments, each component (e.g., module or program) in the above-mentioned components may include a single entity or multiple entities. According to various embodiments, one or more components in the above-mentioned components may be omitted, or one or more other components may be added. Alternatively or additionally, multiple components (e.g., module or program) may be integrated into a single component. In this case, according to various embodiments, the integrated component may still perform the one or more functions of each component in the multiple components in the same or similar manner as a corresponding component in the multiple components before integration. According to various embodiments, the operations performed by a module, program or another component may be performed sequentially, in parallel, repeatedly or in a heuristic manner, or one or more operations in the operations may be run or omitted in different orders, or one or more other operations may be added.

Claims

1. A wireless charging transmitter, comprising: a first charging pad, the first charging pad comprising a first wireless power circuit; a second charging pad, the second charging pad comprising a second wireless power circuit; as well as a controller electrically connected to the first wireless power circuit and the second wireless power circuit and configured to: In response to detecting that a first electronic device is placed on the first charging pad, after an authentication process with the first electronic device for a specified protocol is completed, transmitting power of a first specified wireless power magnitude via the first wireless power circuit, in response to detecting that a second electronic device is placed on the second charging pad while transmitting the first specified wireless power amount of power via the first wireless power circuit, sending a first command to reduce the power transmitted to the first electronic device, wherein the second electronic device requests the same amount of power as the first electronic device, and Upon receiving a first request for a second designated wireless power magnitude of power from the first electronic device in response to the first command, the second designated wireless power magnitude of power is transmitted via the first wireless power circuit and the second wireless power circuit.

2. The wireless charging transmitter according to claim 1, wherein: The controller is also configured to: In response to detecting the detachment of the second electronic device while transmitting the second specified wireless power amount of power via the first wireless power circuit and the second wireless power circuit, sending a second command to increase the power transmitted to the first electronic device, and Upon receiving a second request for the first designated wireless power magnitude of power from the first electronic device in response to the second command, transmitting the first designated wireless power magnitude of power via the first wireless power circuit.

3. The wireless charging transmitter according to claim 1, wherein: The controller is also configured to: In response to detecting that the second electronic device on the second charging pad is replaced by a third electronic device while the first specified wireless power amount is being transmitted via the first wireless power circuit, maintaining the transmission of the first specified wireless power amount via the first wireless power circuit, and Power of a third designated wireless power magnitude smaller than the second designated wireless power magnitude is transmitted via the second wireless power circuit.

4. The wireless charging transmitter according to claim 1, wherein: The controller is also configured to: In response to detecting that the second electronic device is placed alone on the second charging pad, transmitting the second specified wireless power magnitude of power via the second wireless power circuit, in response to detecting that the first electronic device is placed on the first charging pad while the second specified wireless power amount is being transmitted via the second wireless power circuit, sending a third command to the first electronic device requesting the transmission of the second specified wireless power amount, and Upon receiving a third request for the second designated wireless power magnitude of power from the first electronic device in response to the third command, the second designated wireless power magnitude of power is transmitted via the first wireless power circuit and the second wireless power circuit.

5. A wireless charging transmitter, comprising: a first charging pad, the first charging pad comprising a first wireless power circuit; a second charging pad, the second charging pad comprising a second wireless power circuit; as well as a controller electrically connected to the first wireless power circuit and the second wireless power circuit and configured to: In response to detecting the wireless charging receiver on the second charging pad, transmitting, via the second wireless power circuit, power of a specified wireless power amount requested by the wireless charging receiver placed on the second charging pad, regardless of whether another wireless charging receiver is placed on the first charging pad, and In response to detecting that a first electronic device is placed on the first charging pad, when the wireless charging receiver is placed on the second charging pad, sending a command to the first electronic device requesting adjustment of wireless charging power, When the first electronic device is placed alone on the first charging pad, after the authentication process with the first electronic device for the specified protocol is completed, power of a first specified wireless power magnitude is transmitted via the first wireless power circuit. in response to detecting that a second electronic device is placed on the second charging pad while transmitting the first specified wireless power amount of power via the first wireless power circuit, sending a first command to reduce the power transmitted to the first electronic device, wherein the second electronic device requests the same amount of power as the first electronic device, and Upon receiving a first request for a second designated wireless power magnitude of power from the first electronic device in response to the first command, the second designated wireless power magnitude of power is transmitted via the first wireless power circuit and the second wireless power circuit.

6. The wireless charging transmitter according to claim 5, wherein: The controller is also configured to: In response to detecting the detachment of the second electronic device while transmitting the second specified wireless power amount of power via the first wireless power circuit and the second wireless power circuit, sending a second command to increase the power transmitted to the first electronic device, and Upon detecting a second request for the first designated wireless power magnitude of power from the first electronic device in response to the second command, transmitting the first designated wireless power magnitude of power via the first wireless power circuit.

7. The wireless charging transmitter according to claim 5, wherein: The controller is also configured to: In response to detecting that the second electronic device on the second charging pad is replaced by a third electronic device while the first specified wireless power amount is being transmitted via the first wireless power circuit, maintaining the transmission of the first specified wireless power amount via the first wireless power circuit, and Power of a third specified wireless power magnitude is transmitted via the second wireless power circuit.

8. The wireless charging transmitter according to claim 5, wherein: The controller is also configured to: In response to detecting that the second electronic device is placed alone on the second charging pad, transmitting the second specified wireless power magnitude of power via the second wireless power circuit, in response to detecting that the first electronic device is placed on the first charging pad while the second specified wireless power amount is being transmitted via the second wireless power circuit, sending a third command to the first electronic device requesting the transmission of the second specified wireless power amount, and Upon receiving a third request for the second designated wireless power magnitude of power from the first electronic device in response to the third command, the second designated wireless power magnitude of power is transmitted via the first wireless power circuit and the second wireless power circuit.

9. A wireless power transmission method of a wireless charging transmitter, the wireless charging transmitter comprising a first charging pad having a first wireless power circuit and a second charging pad having a second wireless power circuit, the wireless power transmission method comprising: In response to detecting that the wireless charging receiver is placed on the second charging pad, transmitting the power of the specified wireless power amount requested by the wireless charging receiver to the second charging pad via the second wireless power circuit, regardless of whether another wireless charging receiver is placed on the first charging pad; In response to detecting that a first electronic device is placed on the first charging pad, when the wireless charging receiver is placed on the second charging pad, sending a command to the first electronic device requesting adjustment of wireless charging power; When the first electronic device is placed alone on the first charging pad, after the authentication process with the first electronic device for the specified protocol is completed, transmitting power of a first specified wireless power magnitude via the first wireless power circuit; sending a first command to reduce power delivered to the first electronic device in response to detecting that a second electronic device is placed on the second charging pad while delivering the first specified wireless power amount of power via the first wireless power circuit, wherein the second electronic device requests the same amount of power as the first electronic device; and Upon receiving a first request for a second designated wireless power magnitude of power from the first electronic device in response to the first command, the second designated wireless power magnitude of power is transmitted via the first wireless power circuit and the second wireless power circuit.

10. The wireless power transmission method according to claim 9, further comprising: in response to detecting detachment of the second electronic device while transmitting the second specified wireless power amount of power via the first wireless power circuit and the second wireless power circuit, sending a second command to increase power transmitted to the first electronic device; and Upon detecting a second request for the first designated wireless power magnitude of power from the first electronic device in response to the second command, transmitting the first designated wireless power magnitude of power via the first wireless power circuit.

11. The wireless power transmission method according to claim 9, further comprising: in response to detecting that the second electronic device on the second charging pad is replaced by a third electronic device while transmitting the first specified wireless power amount of power via the first wireless power circuit, maintaining the transmission of the first specified wireless power amount of power via the first wireless power circuit; and Power of a third specified wireless power magnitude is transmitted via the second wireless power circuit.

12. The wireless power transmission method according to claim 9, further comprising: In response to detecting that the second electronic device is placed alone on the second charging pad, transmitting the second specified wireless power magnitude of power via the second wireless power circuit; in response to detecting that the first electronic device is placed on the first charging pad while transmitting the second specified wireless power amount of power via the second wireless power circuit, sending a third command to the first electronic device requesting transmission of the second specified wireless power amount of power; and Upon receiving a third request for the second designated wireless power magnitude of power from the first electronic device in response to the third command, the second designated wireless power magnitude of power is transmitted via the first wireless power circuit and the second wireless power circuit.

13. An electronic device, comprising: Battery; Coil; a receiving circuit electrically connected to the coil; a charger configured to control a charging state of the battery based on a voltage supplied to the receiving circuit; as well as a processor, the processor being electrically connected to the receiving circuit and the charger and configured to: In response to detecting that the electronic device is placed alone on a wireless charging transmitter having a plurality of charging pads, wirelessly charging with a first specified wireless power amount of power based on a result of an authentication process performed with the wireless charging transmitter for a specified protocol, receiving a first command to reduce power from the wireless charging transmitter while charging the electronic device with the first specified wireless power amount, wherein the first command is generated by the wireless charging transmitter in response to detecting that another electronic device is placed on the wireless charging transmitter while charging the electronic device with the first specified wireless power amount, the other electronic device requesting the same amount of power as the electronic device, and In response to receiving the first command, a request is sent to the wireless charging transmitter to change the power transmitted to the electronic device from the first designated wireless power magnitude to a second designated wireless power magnitude smaller than the first designated wireless power magnitude.

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