Electronic devices for wireless charging of batteries

Abstract

The electronic device includes: a battery; a coil; a wireless charging circuit configured to rectify power received from a power supply device via the coil and provide rectified power to charge the battery; and a processor configured to output a signal related to a charging mode of the wireless charging circuit. The wireless charging circuit performs a configuration operation for a first charging mode to receive a first power source from the power supply device. When the configuration operation for the first charging mode is completed, the wireless charging circuit operates in the first charging mode for receiving the first power source. When the configuration operation for the first charging mode fails, the wireless charging circuit initiates wireless charging, performs a configuration operation for a second charging mode to receive a second power source lower than the first power source based on a signal received from the processor, and operates in the second charging mode for receiving the second power source.

Description

Technical Field

[0001] Embodiments of this disclosure relate to an electronic device for wirelessly charging a battery. Background Technology

[0002] The Wireless Power Consortium (WPC) is an organization established to develop and promote the Qi standard for wireless charging. According to the Qi standard, the Baseline Power Profile (BPP) supports wireless charging of 5W or lower, and the Extended Power Profile (EPP) supports high-speed wireless charging of 15W or lower.

[0003] According to BPP, the operation for wirelessly charging the battery of a power receiving device (e.g., a smartphone) between a power receiving device and a power supply device (e.g., a wireless charging pad) may include a signal strength (SS) identification (ID) phase, a configuration phase, and a power transfer phase. In the SS ID phase, the power supply device can identify the power receiving device based on its response to a ping signal (or wake-up signal) sent by the power supply device. In the configuration phase, the power supply device can configure the power value to be sent to the power receiving device through data communication with the power receiving device. In the power transfer phase, the power supply device can send power with the configured power value to the power receiving device via a coil.

[0004] According to the EPP, wireless charging operation may also include a negotiation phase and a calibration phase performed after the configuration phase. After the calibration phase is completed, a power delivery phase can be performed. During the negotiation phase, the power supply device can check the quality of the electrical coupling between the transmitting and receiving coils and negotiate with the power receiving device the maximum power that can be supplied to the power receiving device. During the calibration phase, the power supply device measures power loss (e.g., friendly metal loss), and based on the measured power loss, the power supply device calibrates the power value to be supplied to the power receiving device, thereby improving the accuracy of foreign object detection (e.g., foreign object detection (FOD)).

[0005] The above information is provided as relevant technology for the purpose of enhancing understanding of this disclosure. No assertion or determination is made regarding the applicability of any of the above content as prior art in relation to this disclosure. Summary of the Invention

[0006] Technical issues

[0007] The power receiving device is woken up by a power signal received from the power supply device (e.g., digital verification (ping)) and can initiate wireless charging of the battery in EPP mode. Even if the two devices are close to each other, the electrical connection between the two devices is broken if the transmitting and receiving coils are not aligned side by side, and wireless charging can be restarted from the beginning (e.g., SS_ID phase).

[0008] When the misalignment between the coils persists, the battery is not actually being charged, and repeated disconnections and reconnections between the two devices may occur. From the user's perspective, it may be mistakenly perceived as charging.

[0009] Embodiments of this disclosure may provide an electronic device (power receiving device) configured to stably charge a battery without disconnecting it after battery charging is initiated. The technical problems to be solved by this invention are not limited to those described above, and those skilled in the art will clearly understand other technical problems not mentioned above from the following description.

[0010] Solution to the problem

[0011] According to an embodiment, an electronic device may include: a battery; a coil; a wireless charging circuit configured to rectify power received from a power supply device via the coil and provide rectified power to charge the battery; and a processor configured to output a signal related to a charging mode of the wireless charging circuit. The wireless charging circuit may be configured to perform a configuration operation for a first charging mode for receiving a first power from the power supply device. The wireless charging circuit may be configured to operate in the first charging mode for receiving the first power when the configuration operation of the first charging mode is completed. The wireless charging circuit may be configured to initiate wireless charging when the configuration operation of the first charging mode fails, and perform a configuration operation for a second charging mode for receiving a second power lower than the first power from the power supply device based on a signal received from the processor, and operate in the second charging mode for receiving the second power.

[0012] According to an embodiment, a method for operating an electronic device may include: a wireless charging circuit of the electronic device performing a configuration operation for a first charging mode for receiving a first power from a power supply device via a coil of the electronic device. The method may include: when the configuration operation of the first charging mode is completed, the wireless charging circuit operates in the first charging mode for receiving the first power. The method may also include: when the configuration operation of the first charging mode fails, initiating wireless charging via the wireless charging circuit, and based on a signal output by the processor of the electronic device to the wireless charging circuit, performing a configuration operation for a second charging mode for receiving a second power lower than the first power from the power supply device, and operating in the second charging mode for receiving the second power.

[0013] According to an embodiment, a non-transitory recording medium can store instructions readable by an electronic device. When executed, the instructions can cause the electronic device to perform the following operations: execute a configuration operation for a first charging mode for receiving first power from a power supply device via a wireless charging circuit of the electronic device. When executed, the instructions can also cause the electronic device to perform the following operations: when the configuration operation for the first charging mode is completed, operate in the first charging mode for receiving first power via the wireless charging circuit. When the instructions are executed, the electronic device can perform the following operations: when the configuration operation for the first charging mode fails, initiate wireless charging via the wireless charging circuit, execute a configuration operation for a second charging mode for receiving a second power lower than the first power from the power supply device based on a signal output by the processor of the electronic device to the wireless charging circuit, and operate in the second charging mode for receiving the second power.

[0014] Beneficial effects of the invention

[0015] According to embodiments of this disclosure, an electronic device can stably charge a battery without disconnecting it after initiating battery charging. Additionally, various effects that can be directly or indirectly identified through this document can be provided. Attached Figure Description

[0016] Figure 1 This is a block diagram of an electronic device in a network environment according to various embodiments.

[0017] Figure 2a A wireless charging system according to an embodiment is shown. Figure 2b It shows that it is possible to Figure 2a The charging curve implemented in the wireless charging system.

[0018] Figure 3 This is a diagram illustrating the operation of wireless charging in a power receiving device when the transmitting coil and the receiving coil are aligned, according to an embodiment.

[0019] Figure 4 This is a diagram illustrating the operation of wireless charging in a power receiving device when the transmitting coil and receiving coil are not aligned, according to an embodiment.

[0020] Figure 5 This is a diagram illustrating the operation of wireless charging in a power receiving device according to an embodiment, whereby the transmitting coil and the receiving coil are aligned again after separation according to the user's intention.

[0021] Figure 6 This is a diagram illustrating the operation of wireless charging in a power receiving device when the transmitting coil and the receiving coil are aligned, according to an embodiment.

[0022] Figure 7 This is a flowchart explaining the operation of charging a battery in a power receiving device according to an embodiment.

[0023] Figure 8 This is a flowchart explaining the operation of charging a battery in a power receiving device according to an embodiment.

[0024] Figure 9 This is a flowchart explaining the operation of a processor for supporting wireless charging in a power receiving device according to an embodiment.

[0025] Figure 10 This is a flowchart explaining the operation of a processor for supporting wireless charging in a power receiving device according to an embodiment.

[0026] Figure 11 This is a flowchart explaining the operation of charging a battery in a power receiving device according to an embodiment.

[0027] Embodiments of this disclosure will be described in detail below with reference to the accompanying drawings to enable those skilled in the art to readily implement these embodiments. However, this disclosure can be implemented in various different ways and is not limited to the embodiments described herein. Similar or identical reference numerals may be used for similar or identical constituent elements in conjunction with the accompanying drawings. Furthermore, descriptions of well-known features and configurations may be omitted in the drawings and related descriptions for clarity and brevity. Detailed Implementation

[0028] Figure 1 This is a block diagram illustrating an electronic device 101 in a network environment 100 according to various embodiments. (Refer to...) Figure 1In network environment 100, electronic device 101 can communicate with electronic device 102 via a first network 198 (e.g., a short-range wireless communication network), or with at least one of electronic device 104 or server 108 via a second network 199 (e.g., a long-range wireless communication network). According to an embodiment, electronic device 101 can communicate with electronic device 104 via server 108. According to an embodiment, electronic device 101 may include a processor 120, memory 130, input module 150, sound output module 155, display module 160, audio module 170, sensor module 176, interface 177, connection terminal 178, haptic module 179, camera module 180, power management module 188, battery 189, communication module 190, user identification module (SIM) 196, or antenna module 197. In some embodiments, at least one of the above components (e.g., connection terminal 178) may be omitted from electronic device 101, or one or more other components may be added to electronic device 101. In some embodiments, some of the components described above (e.g., sensor module 176, camera module 180, or antenna module 197) may be implemented as a single integrated component (e.g., display module 160) 11.

[0029] Processor 120 may run software (e.g., program 140) to control at least one other component (e.g., hardware or software component) of electronic device 101 connected to processor 120, and may perform various data processing or calculations. According to one embodiment, as at least part of the data processing or calculation, processor 120 may store commands or data received from another component (e.g., sensor module 176 or communication module 190) in volatile memory 132, process the commands or data stored in volatile memory 132, and store the resulting data in non-volatile memory 134. According to embodiments, processor 120 may include a main processor 121 (e.g., central processing unit (CPU) or application processor (AP)) or an auxiliary processor 123 (e.g., graphics processing unit (GPU), neural processing unit (NPU), image signal processor (ISP), sensor central processor, or communication processor (CP)) that is operationally independent of or combined with the main processor 121. For example, when electronic device 101 includes a main processor 121 and an auxiliary processor 123, the auxiliary processor 123 may be adapted to consume less power than the main processor 121, or to be dedicated to a specific function. The auxiliary processor 123 may be implemented separately from the main processor 121, or may be implemented as part of the main processor 121.

[0030] When the main processor 121 is inactive (e.g., in sleep mode), the auxiliary processor 123 (rather than the main processor 121) can control at least some of the functions or states associated with at least one component of the electronic device 1011 (e.g., display module 160, sensor module 176, or communication module 190), or when the main processor 121 is active (e.g., running an application), the auxiliary processor 123 can work with the main processor 121 to control at least some of the functions or states associated with at least one component of the electronic device 101 (e.g., display module 160, sensor module 176, or communication module 190). According to embodiments, 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) functionally associated with the auxiliary processor 123. According to embodiments, the auxiliary processor 123 (e.g., a neural processing unit) may include hardware architecture dedicated to artificial intelligence model processing. Artificial intelligence models can be generated through machine learning. For example, such learning can be performed via electronic device 101 where artificial intelligence is performed or via a separate server (e.g., server 108). The learning algorithm may include, but is not limited to, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning. The artificial intelligence model may include multiple layers of artificial neural networks. The artificial neural network may be a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted Boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), or a deep Q-network, or a combination of two or more thereof, but is not limited thereto. Additionally or optionally, the artificial intelligence model may include software structures in addition to hardware structures.

[0031] Memory 130 may store various data used by at least one component of electronic device 101 (e.g., processor 120 or sensor module 176). The various data may include, for example, software (e.g., program 140) and input or output data for commands associated with it. Memory 130 may include volatile memory 132 or non-volatile memory 134.

[0032] The program 140 may be stored as software in the memory 130, and the program 140 may include, for example, an operating system (OS) 142, middleware 144, or application 146.

[0033] The input module 150 can receive commands or data from outside the electronic device 101 (e.g., a user) that will be used by other components of the electronic device 101 (e.g., processor 120). The input module 150 may include, for example, a microphone, mouse, keyboard, keys (e.g., buttons), or digital pen (e.g., stylus).

[0034] The sound output module 155 can output sound signals to the outside of the electronic device 101. The sound output module 155 may include, for example, a speaker or a receiver. The speaker can be used for general purposes such as playing multimedia or playing records. The receiver can be used to receive incoming calls. According to an embodiment, the receiver can be implemented separately from the speaker or as part of the speaker.

[0035] Display module 160 can visually provide information to the outside of electronic device 101 (e.g., to a user). Display device 160 may include, for example, a display, a holographic device, or a projector, and control circuitry for controlling a respective one of the display, holographic device, and projector. According to an embodiment, display module 160 may include a touch sensor adapted to detect touch or a pressure sensor adapted to measure the intensity of the force caused by touch.

[0036] The audio module 170 can convert sound into electrical signals and vice versa. According to an embodiment, the audio module 170 can obtain sound via the input module 150, or output sound via the sound output module 155 or headphones of an external electronic device (e.g., electronic device 102) that is directly (e.g., wired) or wirelessly connected to the electronic device 101.

[0037] Sensor module 176 can detect the operating state of electronic device 101 (e.g., power or temperature) or the environmental state outside electronic device 101 (e.g., user state), and then generate an electrical signal or data value corresponding to the detected state. According to embodiments, sensor module 176 may include, for example, a gesture sensor, gyroscope sensor, atmospheric pressure sensor, magnetic sensor, accelerometer, grip sensor, proximity sensor, color sensor, infrared (IR) sensor, biometric sensor, temperature sensor, humidity sensor, or illuminance sensor.

[0038] Interface 177 may support one or more specific protocols used to enable electronic device 101 to connect directly (e.g., wired) or wirelessly to external electronic devices (e.g., electronic device 102). According to embodiments, interface 177 may include, for example, a High Definition Multimedia Interface (HDMI), a Universal Serial Bus (USB) interface, a Secure Digital Card (SD) interface, or an audio interface.

[0039] Connection 178 may include a connector, through which electronic device 101 may be physically connected to an external electronic device (e.g., electronic device 102). According to embodiments, connection 178 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

[0040] The haptic module 179 can convert electrical signals into mechanical stimuli (e.g., vibration or motion) or electrical stimuli that can be recognized by a user through his touch or kinesthesia. According to an embodiment, the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulator.

[0041] Camera module 180 can capture still or moving images. According to an embodiment, camera module 180 may include one or more lenses, an image sensor, an image signal processor, or a flash.

[0042] The power management module 188 manages the power supply to the electronic device 101. According to an embodiment, the power management module 188 may be implemented as at least part of, for example, a power management integrated circuit (PMIC).

[0043] Battery 189 can power at least one component of electronic device 101. According to an embodiment, battery 189 may include, for example, a non-rechargeable primary battery, a rechargeable rechargeable battery, or a fuel cell.

[0044] Communication module 190 can support the establishment of a direct (e.g., wired) or wireless communication channel between electronic device 101 and external electronic devices (e.g., electronic device 102, electronic device 104, or server 108), and perform communication via the established communication channel. Communication module 190 may include one or more communication processors capable of operating independently of processor 120 (e.g., application processor (AP)) and support direct (e.g., wired) or wireless communication. According to embodiments, communication module 190 may include wireless communication module 192 (e.g., cellular communication module, short-range wireless communication module, or Global Navigation Satellite System (GNSS) communication module) or wired communication module 194 (e.g., local area network (LAN) communication module or power line communication (PLC) module). 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, Wi-Fi Direct, or Infrared Data Association (IrDA)) or a second network 199 (e.g., a long-range communication network such as a traditional cellular network, 5G network, next-generation communication network, the Internet, or a computer network (e.g., a LAN or a wide area network (WAN))). These various types of communication modules can be implemented as a single component (e.g., a single chip) or as multiple components separate from each other (e.g., multiple chips). The wireless communication module 192 can identify and verify the electronic device 101 in the communication network (such as the first network 198 or the second network 199) using user information (e.g., the International Mobile Subscriber Identity (IMSI)) stored in the user identification module 196.

[0045] Wireless communication module 192 can support 5G networks following 4G networks and next-generation communication technologies (such as new radio (NR) access technologies). NR access technologies can support enhanced mobile broadband (eMBB), massive machine-type communication (mMTC), or ultra-reliable low-latency communication (URLLC). Wireless communication module 192 can support high-frequency bands (e.g., millimeter-wave bands) to achieve, for example, high data transmission rates. Wireless communication module 192 can support various technologies used to ensure performance in high-frequency bands, such as, for example, beamforming, massive MIMO, full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, or massive antennas. Wireless communication module 192 can support various requirements specified in electronic device 101, external electronic devices (e.g., electronic device 104), or network systems (e.g., second network 199). According to an embodiment, the wireless communication module 192 may support peak data rates (e.g., 20 Gbps or greater) for implementing eMBB, lost coverage (e.g., 164 dB or less) for implementing mMTC, or U-plane latency (e.g., 0.5 ms or less for each of the downlink (DL) and uplink (UL), or 1 ms or less round trip) for implementing URLLC.

[0046] Antenna module 197 can transmit or receive signals or power to or from the exterior of electronic device 101 (e.g., external electronic device). According to an embodiment, antenna module 197 may include an antenna comprising a radiating element formed of a conductive material or conductive pattern formed in or on a substrate (e.g., a printed circuit board (PCB)). According to an embodiment, antenna module 197 may include multiple antennas (e.g., an array antenna). In this case, at least one antenna suitable for a communication scheme used in a communication network (such as a first network 198 or a second network 199) can be selected from the multiple antennas by, for example, communication module 190 (e.g., wireless communication module 192). Signals or power can then be transmitted or received between communication module 190 and the external electronic device via the selected at least one antenna. According to an embodiment, additional components besides the radiating element (e.g., a radio frequency integrated circuit (RFIC)) may be additionally incorporated into antenna module 197.

[0047] According to various embodiments, antenna module 197 may form a millimeter-wave antenna module. According to embodiments, the millimeter-wave antenna module may include a printed circuit board, a radio frequency integrated circuit (RFIC), and multiple antennas (e.g., an array antenna), wherein the RFIC is disposed on or adjacent to a first surface (e.g., a bottom surface) of the printed circuit board and is capable of supporting a specified high-frequency band (e.g., a millimeter-wave band), and the multiple antennas are disposed on or adjacent to a second surface (e.g., a top or side surface) of the printed circuit board and are capable of transmitting or receiving signals in the specified high-frequency band.

[0048] At least some of the aforementioned components can be interconnected and communicate signals (e.g., commands or data) between them via an inter-peripheral communication scheme (e.g., bus, general purpose input / output (GPIO), serial peripheral interface (SPI), or mobile industrial processor interface (MIPI)).

[0049] According to an embodiment, commands or data can be sent or received between electronic device 101 and external electronic device 104 via server 108 connected to a second network 199. Each of electronic device 102 or electronic device 104 can be a device of the same type as electronic device 101, or a device of a different type. According to an embodiment, all or some operations that would be performed on electronic device 101 can be performed on one or more of external electronic devices 102, external electronic devices 104, or server 108. For example, if electronic device 101 is required to automatically perform a function or service, or is required to perform a function or service in response to a request from a user or another device, electronic device 101 may request the one or more external electronic devices to perform at least a portion of the function or service, instead of running the function or service, or electronic device 101 may request the one or more external electronic devices to perform at least a portion of the function or service in addition to running the function or service. Upon receiving the request, one or more external electronic devices may perform at least a portion of the requested function or service, or perform additional functions or services related to the request, and transmit the result of the execution to electronic device 101. Electronic device 101 may provide the result as at least a partial response to the request, with or without further processing of the result. For this purpose, technologies such as cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing may be used. Electronic device 101 may use, for example, distributed computing or mobile edge computing to provide ultra-low latency services. In another embodiment, external electronic device 104 may include an Internet of Things (IoT) device. Server 108 may be an intelligent server using machine learning and / or neural networks. According to embodiments, external electronic device 104 or server 108 may be included in a second network 199. Electronic device 101 may be applied to intelligent services based on 5G communication technology or IoT-related technologies (e.g., smart homes, smart cities, smart cars, or healthcare).

[0050] Figure 2a A wireless charging system according to an embodiment is shown. Figure 2b It shows that it is possible to Figure 2a The charging curve implemented in the wireless charging system.

[0051] Reference Figure 2a Power supply equipment 201 (e.g., Figure 1 The electronic device 102 can wirelessly transmit power. The power receiving device 202 (e.g., Figure 1 The electronic device 101 can wirelessly receive power. The wireless charging system can perform wireless charging based on a specified charging protocol. (See reference...) Figure 2bThe wireless charging system can use BPP to perform general wireless charging (in other words, low-speed wireless charging). According to BPP, the power supply device 201 can perform operation 231 of identifying the power receiving device 202. For example, the power supply device 201 can identify the power receiving device 202 based on the power receiving device 202's response to a ping signal (or wake-up signal) sent by the power supply device 201. The power supply device 201 can perform operation 232 of configuring the power value to be sent to the identified power receiving device 202 (e.g., 5W) through data communication with the power receiving device 202. The power supply device 201 can perform operation 233 of transferring power with the configured power value to the power receiving device 202 through a coil. According to EPP, the power supply device 201 can perform identification operation 231. The power supply device 201 can perform operation 242 of configuring the power value to be sent to the identified power receiving device 202 (e.g., 15W) through data communication with the power receiving device 202. For example, based on the power supply device 201's ability to supply 15W or more of power to the power receiving device 202, an EPP configuration operation 242 for high-speed wireless charging can be performed. After performing the EPP configuration operation 242, the power supply device 201 can check the electrical coupling quality between the transmitting and receiving coils and perform a negotiation operation 243 with the power receiving device 202 to determine the maximum power that can be supplied to the power receiving device 202. After the negotiation operation 243 is completed, the power supply device 201 can perform an operation 244 to measure power loss (e.g., friendly metal loss) and calibrate the power value to be supplied to the power receiving device 202 based on the measured power loss. The power supply device 201 can then perform an operation 245 to transfer power with the calibrated power value to the power receiving device 202 through the coils. When the connection between the two devices 201 and 202 is disconnected before performing the power transfer operation 245 for high-speed wireless charging, the wireless charging system can switch the charging mode from EPP to BPP to avoid repeated disconnection and reconnection.

[0052] According to an embodiment, the power receiving device 202 may include a coil 210, a wireless charging circuit 220, a power management circuit 230, a battery 240, a memory 288, and a processor 299. The wireless charging circuit 220 (e.g., in...) Figure 1The circuitry configured in the power management module 188 can be woken up by a power signal (e.g., digital verification) received from the power supply device 201 via coil 210. The wireless charging circuit 220 can be configured to perform a given function (e.g., charging of battery 240 and power delivery (PD) communication with the power supply device 201) using power supplied from the power supply device 201. According to an embodiment, the wireless charging circuit 200 may include a rectifier 250 (e.g., an AC-DC converter), a DC-DC converter 255, communication circuitry 260, and control circuitry 270. According to an embodiment, the rectifier 250, DC-DC converter 255, communication circuitry 260, and control circuitry 270 can be configured as a single integrated circuit (IC). For example, it can be included in a magnetic field connection (MFC) IC, a wireless charging IC, or a receiver (Rx) IC. For example, an IC can be configured to perform rectification, DC-DC conversion, communication, and control operations for the wireless charging circuit 200. According to an embodiment, the control circuit 270 may be configured in a separate IC from at least one of the communication circuit 260, rectifier 250, and DC-DC converter 255. According to an embodiment, at least one of the rectifier 250, DC-DC converter 255, communication circuit 260, and control circuit 270 may be configured together with the power management circuit 230 in a single IC (e.g., an interface integrated circuit (IF) PMIC). Memory 288 (e.g., Figure 1 The memory 130) and the processor 299 (e.g., Figure 1 The processor 120 is a load circuit (in other words, the system) driven by power supplied from the wireless charging circuit 220 via the power management circuit 230 and / or from the battery 240. Additionally, the load circuit may include a display (e.g., Figure 1 The display module 160) and / or communication circuitry (e.g., Figure 1 (Communication module 190).

[0053] Coil 210 may be a helical coil wound several times in a clockwise or counterclockwise direction. When power receiving device 202 is mounted on the charging pad of power supply device 201, coil 210 may be aligned side-by-side with the coil of power supply device 201. Power can be supplied from power supply device 201 to power receiving device 202 via electrical coupling between the transmitting coil (e.g., the coil of power supply device 201) and the receiving coil (e.g., coil 210). Coil 210 may resonate at the same frequency as the resonant frequency of the coil of power supply device 201. Power receiving device 202 may also include a resonant circuit for causing coil 210 to resonate at a specific frequency (e.g., the frequency specified in the Wireless Power Union (WPC) standard). In addition to power reception, coil 210 may also be used as an antenna for data communication (e.g., in-band communication).

[0054] Rectifier 250 can be configured to rectify (i.e., convert current from alternating current (AC) to direct current (DC)) the power received from power supply device 201 via coil 210 and output it to DC-DC converter 255. DC-DC converter 255 (e.g., low dropout (LDO)) can convert the voltage value (in other words, voltage level) of the power rectified by and received from rectifier 250 to a specified voltage value and output it to power management circuitry 230. Power management circuitry 230 (e.g., ...) Figure 1 The circuitry configured in the power management module 188 can adjust the voltage and / or current values ​​(in other words, the current level) of the power received from the wireless charging circuit 220 and supply it to the battery 240 and the load circuitry. For example, the power management circuit 230 may include a buck converter and / or a boost converter, wherein the buck converter is configured to reduce the voltage of the power supplied from the wireless charging circuit 220 and output it, and the boost converter is configured to increase the voltage of the received power and output it.

[0055] Communication circuit 260 can be configured to perform data communication (e.g., in-band communication) with power supply device 201 via coil 210 using power supplied from power supply device 201 through rectifier 250. For example, communication circuit 260 can receive data from control circuit 270 and carry the received data on a power signal received from power supply device 201 for transmission to power supply device 201. As a method for carrying data on the power signal, techniques for modulating the amplitude and / or frequency of the power signal can be used. For example, communication circuit 260 can change the amplitude of the power signal by performing switch control to open and close a switch located on the grounded electrical path connecting coil 210 and power receiving device 202. Communication circuit 260 can demodulate the power signal transmitted from power supply device 201 to coil 210 to obtain data transmitted from power supply device 201 to power receiving device 202. Communication circuit 260 can transmit the acquired data to control circuit 270.

[0056] Control circuit 270 can be woken up by a power signal (e.g., digital verification) supplied from power supply device 201 via rectifier 250. Control circuit 270 can be configured to perform data communication with processor 299 via a communication interface provided in power receiving device 201 using the power supplied from power supply device 201 via rectifier 250, and to perform PD communication with power supply device for charging battery 240 via communication circuit 260. For example, control circuit 270 can obtain information about charging status from power supply device 201 via communication circuit 260 and provide the obtained information to processor 299 via first communication interface 211 (e.g., internal integrated circuit (I2C)).

[0057] According to an embodiment, based on signals received from the processor 299 (e.g., a microcontroller unit (MCU) or application processor (AP)) via the second communication interface 222 (e.g., a general purpose input / output (GPIO)), the control circuit 270 can configure the charging mode of the wireless charging circuit 220 to either a first charging mode (e.g., EPP mode) for charging the battery 240 at a high speed or a second charging mode (e.g., BPP mode) for charging at a relatively low speed compared to the first charging mode.

[0058] According to an embodiment, based on being woken up by a wake-up signal received from the power supply device 201 via coil 210, the control circuit 270 can check the signal received from the processor 299 via the second communication interface 222. Based on receiving a first signal with a first voltage level from the processor 299 via the second communication interface 222, the control circuit 270 can configure the wireless charging circuit 220 to a first charging mode. For example, the control circuit 270 can sequentially execute identification operation 231, EPP configuration operation 242, negotiation operation 243, calibration operation 244, and power transfer operation 245 to charge the battery 240 at high speed. Based on receiving a second signal with a second voltage level different from (e.g., lower than) the first voltage level from the processor 299 via the second communication interface 222, the control circuit 270 can configure the wireless charging circuit 220 to a second charging mode. For example, the control circuit 270 can sequentially execute identification operation 231, BPP configuration operation 232, and power transfer operation 233 to charge the battery 240 at a low speed.

[0059] Figure 3 This is a view used to illustrate the operation for wireless charging performed in the control circuit 270 and processor 299 according to an embodiment when the transmitting coil and the receiving coil are aligned (e.g., when the distance between the center point of the transmitting coil and the center point of the receiving coil is within a threshold that guarantees the performance of the EPP mode).

[0060] At time t30, a power signal (e.g., a wake-up signal) is received by power receiving device 202 via coil 210, and the power signal can be rectified by rectifier 250 and output to control circuit 270. Control circuit 270 can be woken up by the power rectified by rectifier 250. For example, the rectified voltage (Vrect) can be V1 higher than the minimum voltage Vmin (e.g., undervoltage lockout (UVLO) voltage) used to wake up control circuit 270, so control circuit 270 can be woken up. When woken up by rectified power, control circuit 270 can perform identification for wireless charging (in... Figure 3 Operation 310 (represented as "ID") (e.g., Figure 2bThe identification operation 231). First, the control circuit 270 can control the communication circuit 260 to send an SS ID packet (e.g., a response packet to a digital verification sent by the power supply device 201) to the power supply device 201 via the coil 210. Simultaneously, according to various embodiments of this disclosure, the voltage value VGPIO of the second communication interface 222 is configured as a default value corresponding to the voltage level of the first charging mode. For example, as shown, the default value can be a high level (Vhigh). The control circuit 270 can check the voltage level of VGPIO. For example, when woken up by rectified power, the control circuit 270 can immediately check the voltage level of VGPIO. As another example, based on the completion of SS_ID packet transmission, the control circuit 270 can check the voltage level of VGPIO. Based on the high level (Vhigh) of VGPIO, the control circuit 270 can perform configuration on the EPP (in Figure 3 Operation 320 (represented as "EPP_CFG") (e.g., Figure 2b Configuration operation 242). For example, control circuit 270 can control communication circuit 260 to send packets for EPP configuration to power supply device 201. For example, when the "Neg" bit in the packet is configured to 1, power supply device 201 can identify the corresponding packet as an EPP configuration packet. Control circuit 270 can send a notification message indicating that the EPP configuration packet has been sent to processor 299 through first communication interface 211. Based on the received notification message, at time point t31, processor 299 can change the voltage level of VGPIO to a low level (Vlow) corresponding to the second charging mode.

[0061] Based on the EPP configuration packet, a power supply device 201 is sent, and at time point t32, the rectified voltage (Vrect) can rise from V1 to V2. Thereafter, the control circuit 270 can perform negotiation (in...) via PD communication with the power supply device 201. Figure 3 (represented as "NEGO") operation 330 (e.g., Figure 2b Negotiation operation 243). When negotiation is complete, control circuit 270 can perform calibration via PD communication with power supply device 201 (in Figure 3 Operation 340 (represented as "CAL") (e.g., Figure 2b (Calibration operation 244). Control circuit 270 can send a notification message indicating calibration completion to processor 299 via first communication interface 211. Based on calibration completion, control circuit 270 can perform power transfer operation 350. Based on receiving the notification message, at time point t33, processor 299 can change the voltage level of VGPIO to a high level (Vhigh) (or the first level) corresponding to the first charging mode.

[0062] According to one embodiment, during negotiation operation 330 or calibration operation 340, the voltage level of VGPIO can change from high (Vhigh) to low (Vlow) (or a second level). For example, control circuit 270 can send a notification message indicating that negotiation operation 330 or calibration operation 340 is being performed to processor 299 via first communication interface 211. Based on the received notification message, at time point t32, processor 299 can change the voltage level of VGPIO to low (Vlow) corresponding to the second charging mode.

[0063] According to an embodiment, configuration operation 320, negotiation operation 330, and calibration operation 340 can be collectively referred to as EPP Quality Check (EQC) operation 301. After sending the EPP configuration packet to the power supply device 201, the control circuit 270 can execute EQC operation 301. The control circuit 270 can send a notification message indicating that EQC operation 301 is being executed to the processor 299 via the first communication interface 211. Based on the received notification message, the processor 299 can change the voltage level of VGPIO to a low level (Vlow) corresponding to the second charging mode.

[0064] Figure 4 This is a view illustrating the wireless charging operation performed in the control circuit 270 and processor 299 according to an embodiment when the transmitting coil and receiving coil are not aligned (when the distance between the center points of the transmitting coil and the receiving coil exceeds a threshold guaranteeing EPP mode performance). Brief description or omission of... Figure 3 Duplicate content.

[0065] At time t40, control circuit 270 can be woken up by rectifying the voltage (Vrect) to V1, which exceeds the minimum voltage (Vmin). When woken up by rectified power, control circuit 270 can perform identification (ID) operation 410 (e.g., Figure 3 The identification (ID) operation 310). For example, control circuit 270 can control communication circuit 260 to send SS ID packets to power supply device 201 via coil 210. When woken up by rectified power or based on the SS_ID packet being sent, control circuit 270 can check the voltage level of VGPIO. Based on the high voltage level of VGPIO (Vhigh), control circuit 270 can perform EQC operation 420 for high-speed charging (e.g., Figure 3(EQC operation 301). For example, control circuit 270 can sequentially perform configuration operation, negotiation operation, and calibration operation. Control circuit 270 can send a notification message indicating that EQC operation 420 is being performed to processor 299 via first communication interface 211 at time t41 (e.g., the time when the EPP configuration packet is sent). Based on the received notification message, processor 299 can change the voltage level of VGPIO to a low level (Vlow) corresponding to the second charging mode.

[0066] Based on the EPP configuration packet, a power supply device 201 is sent, and at time t42, the rectified voltage (Vrect) can rise from V1 to V2. Thereafter, control circuit 270 can perform negotiation operations and subsequent calibration operations by communicating with the power supply device 201 via PD using communication circuit 260. While negotiation or calibration operations are in progress, the connection between power supply device 201 and power receiving device 202 can be disconnected. For example, by stopping power transmission at time t43, the rectified voltage (Vrect) becomes lower than the minimum voltage (Vmin), thus disabling control circuit 270. For example, power supply device 201 can stop power transmission when the FOD parameter (e.g., Q factor or reference frequency) measured by power supply device 201 differs from the value received from power receiving device 202. As another example, during the negotiation phase, power supply device 201 can stop power transmission when packets to be received from power receiving device 202 are frequently omitted due to poor channel conditions. As another example, during the calibration phase, the power value supplied from power supply device 201 to power receiving device 202 may fail to converge to the specified target power due to misalignment. Therefore, power receiving device 202 may continuously send Control Error Packets (CEPs) containing values ​​other than "0" to power supply device 201 as requests to increase the power value. Power supply device 201 may stop power transmission if the CEPs received from power receiving device 202 do not converge to 0.

[0067] After control circuit 270 is deactivated, at time t44, control circuit 270 can be woken up again by a rectified voltage (Vrect) exceeding the minimum voltage (Vmin). After being woken up, control circuit 270 can switch the charging mode to a second charging mode. For example, control circuit 270 can control communication circuit 260 to send SS ID packets to power supply device 201 via coil 210. Control circuit 270 can check the voltage level of VGPIO at least based on being woken up by rectified power. Based on the VGPIO voltage level being low (Vlow), control circuit 270 can control communication circuit 260 to send packets for BPP configuration to power supply device 201. For example, when the "negative" bit in the packet is configured to 0, power supply device 201 can identify the corresponding packet as a BPP configuration packet.

[0068] Based on the BPP configuration packet, a power supply device 201 is sent, the rectified voltage (Vrect) is maintained at V1, and power transfer from the power supply device 201 to the battery 240 can be performed via the wireless charging circuit 220. Charging can then be stopped at time t45. For example, when the user separates the power receiving device 202 from the charging pad of the power supply device 201, the power supply device 201 stops power transfer and the rectified voltage (Vrect) becomes below the minimum voltage (Vmin), thus the control circuit 270 can be deactivated. The processor 299 can recognize the charging stop via the power management circuit 230. As another example, when the battery 240 is 100% charged, the processor 299 can request to stop power transfer to the power supply device 201 via the control circuit 270, thereby stopping charging. At time t46, after a predetermined time (e.g., approximately 1 second) from the charging stop time t45, the processor 299 can change the voltage level of VGPIO to a high level (Vhigh) corresponding to the first charging mode. Therefore, when the wireless charging circuit 220 is subsequently awakened by a power signal received from the outside, the wireless charging circuit 220 can begin charging in the first charging mode.

[0069] Figure 5 This is a view illustrating the operation for wireless charging performed in the control circuitry 270 and processor 299 according to an embodiment, when the transmitting coil and receiving coil are realigned after being separated according to the user's intention. (Brief description or omission of...) Figure 3 and Figure 4 Duplicate content.

[0070] At time t50, control circuit 270 can be woken up by rectifying the voltage (Vrect) to V1, which exceeds the minimum voltage (Vmin). When woken up by rectified power, control circuit 270 can perform identification (ID) operation 510. For example, control circuit 270 can control communication circuit 260 to send SS ID packets to power supply device 201 via coil 210. When woken up by rectified power or based on the SS_ID packet being sent, control circuit 270 can check the voltage level of VGPIO. Based on the high voltage level (Vhigh) of VGPIO, control circuit 270 can perform EQC operation 520 for high-speed charging. For example, control circuit 270 can sequentially perform configuration operation, negotiation operation, and calibration operation. Control circuit 270 can send a notification message indicating that EQC operation 520 is being performed to processor 299 via first communication interface 211 at time t51 (e.g., the time when the EPP configuration packet is sent). Based on the received notification message, the processor 299 can change the voltage level of VGPIO to a low level (Vlow) corresponding to the second charging mode.

[0071] Based on the EPP configuration packet, a power supply device 201 is sent, and at time t52, the rectified voltage (Vrect) can rise from V1 to V2. Thereafter, control circuitry 270 can perform negotiation and subsequent calibration operations by communicating with the PD of power supply device 201 using communication circuitry 260. While performing EQC operation 520 (e.g., negotiation or calibration operation), the connection between devices 201 and 202 can be disconnected at time t53 due to separation according to user intent (i.e., release of electrical coupling between the transmitting and receiving coils). Processor 299 can recognize the disconnection at time t54 via power management circuitry 230. At time t55, after a predetermined time (e.g., approximately 1 second) elapsed from charging stop time t54, processor 299 can change the voltage level of VGPIO to a high level (Vhigh) corresponding to the first charging mode.

[0072] Due to the alignment between the transmitting and receiving coils according to the user's intention (e.g., recharging), at time point t56, the control circuit 270 can be woken up by the rectified voltage (Vrect) becoming V1, exceeding the minimum voltage (Vmin). When woken up by rectified power, the control circuit 270 can perform an identification (ID) operation 530. For example, the control circuit 270 can control the communication circuit 260 to send an SS ID packet to the power supply device 201 via coil 210. When woken up by rectified power or based on the SS_ID packet being transmitted, the control circuit 270 can check the voltage level of VGPIO. Based on the VGPIO voltage level being high (Vhigh), the control circuit 270 can perform an EQC operation 540 for high-speed charging. The control circuit 270 can send a notification message indicating that the EQC operation 540 is being performed to the processor 299 via the first communication interface 211 at time point t57 (e.g., the time when the EPP configuration packet is sent). Based on the received notification message, the processor 299 can change the voltage level of VGPIO to a low level (Vlow) corresponding to the second charging mode.

[0073] Based on the EPP configuration packet being sent to the power supply device 201, the rectified voltage (Vrect) can rise from V1 to V2. Subsequently, the control circuit 270 can complete the negotiation operation and subsequent calibration operation via PD communication with the power supply device 201, and execute the power delivery operation 550. The control circuit 270 can send a notification message indicating calibration completion to the processor 299 via the first communication interface 211. Based on the received notification message, at time t58, the processor 299 can change the voltage level of VGPIO to a high level (Vhigh) corresponding to the first charging mode.

[0074] Figure 6 This is a view illustrating the operation for wireless charging performed in the control circuit 270 and processor 299 according to an embodiment when the transmitting coil and receiving coil are aligned. (Brief description or omission of...) Figure 3 Duplicate content.

[0075] At time t60, control circuit 270 can be woken up by rectifying the voltage (Vrect) to V1, which exceeds the minimum voltage (Vmin). When woken up by rectified power, identification (ID) operation 610 can be performed. For example, control circuit 270 can control communication circuit 260 to send SS ID packets to power supply device 201 via coil 210. When woken up by rectified power or based on the SS_ID packet being sent, control circuit 270 can check the voltage level of VGPIO. Based on the high level (Vhigh) of VGPIO, control circuit 270 can perform EQC operation 620 for high-speed charging. Control circuit 270 can send a notification message indicating that EQC operation 620 is being performed to processor 299 via first communication interface 211 at time t61 (e.g., the time when EPP configuration packets are sent). Based on receiving the notification message, processor 299 can change the voltage level of VGPIO to a low level (Vlow) corresponding to the second charging mode.

[0076] Based on the EPP configuration packet, a power supply device 201 is sent, and the rectified voltage (Vrect) can be increased from V1 to V2. Subsequently, the control circuit 270 can perform a negotiation operation and a subsequent calibration operation via PD communication with the power supply device 201 through the communication circuit 260. Then, at the calibration completion time t63, the control circuit 270 can perform a power transfer operation 630 from the power supply device 201 to the battery 240 via the wireless charging circuit 220.

[0077] Subsequently, charging can be stopped at time t64. For example, when the user separates the power receiving device 202 from the charging pad of the power supply device 201, the power supply device 201 stops power delivery, thereby causing the rectified voltage (Vrect) to fall below the minimum voltage (Vmin), and thus the control circuit 270 can be deactivated. The processor 299 can recognize the charging stop via the power management circuit 230. As another example, when the battery 240 is 100% charged, the processor 299 can request to stop power delivery to the power supply device 201 via the control circuit 270, thereby stopping charging. At time t65, after a predetermined time (e.g., approximately 1 second) elapsed from the charging stop time t64, the processor 299 can change the voltage level of VGPIO to a high level (Vhigh) corresponding to the first charging mode.

[0078] According to an embodiment, an internal power source (e.g., battery 240 or power management circuit 230) can be connected to control circuit 270. Therefore, even if the rectified voltage becomes equal to or less than a minimum value, the wireless charging circuit 220 can be prevented from being reset. For example, when the phenomenon of the rectified voltage dropping to equal to or less than a minimum value (Vmin) due to a non-smooth alignment between the transmitting and receiving coils is repeated several times (e.g., twice), the wireless charging circuit 220 can change the charging mode from a first charging mode (e.g., EPP mode) to a second charging mode (e.g., BPP mode) to charge the battery 240 at a low speed.

[0079] According to an embodiment, the control circuit 270 can record the progress of the charging mode in a non-volatile memory (e.g., ...). Figure 1 The charging mode is changed from EPP mode to BPP mode to charge the battery 240 at a low speed, based on information about the progress of the recording process in the non-volatile memory 134. For example, the control circuit 270 can record information indicating that an EPP configuration packet has been sent in the memory. After recording such information, the control circuit 270 is woken up again and can check from the information recorded in the memory that the negotiation operation for the next stage after sending the EPP configuration packet has not yet been performed. Therefore, the wireless charging circuit 220 can change the charging mode from EPP mode to BPP mode to charge the battery 240 at a low speed.

[0080] Figure 7 This is for explaining the use of power receiving devices (e.g., according to embodiments) in accordance with embodiments. Figure 1 Electronic devices 101 or Figure 2a The battery in the power receiving device 202 (e.g., Figure 1 Battery 189 or Figure 2a A flowchart of the operation of charging the battery 240. When the wireless charging circuit (e.g., Figure 1 The charging circuit configured in the power management module 188 or Figure 2a The wireless charging circuit 220 is connected via a coil (e.g., Figure 2a The coil 210) is supplied from the power supply device (e.g., Figure 1 Electronic device 102 or Figure 2a When the power supply equipment 201 is awakened by a power signal (e.g., digital verification), it can perform... Figure 7 The operation.

[0081] In operation 710, the power receiving device may send packets for identification (e.g., SS ID packets) to the power supply device. In operation 715, the power receiving device may send packets for EPP configuration to the power supply device.

[0082] After sending the SS ID packet and EPP configuration packet, in operation 720, the power receiving device can determine whether the connection for wireless charging with the power supply device has been lost. For example, the power receiving device checks the power supply from the rectifier (e.g., Figure 2a The rectifier 250 rectifies and outputs the voltage value of the power, and when the rectified voltage is less than a minimum value (e.g., UVLO voltage), it can be determined that the connection between the devices is broken.

[0083] When the connection is maintained in operation 720, in operation 725, the power receiving device can perform negotiation according to the EPP via data communication with the power supply device. In operation 730, the power receiving device can determine whether the connection with the power supply device is disconnected before the negotiation is completed.

[0084] Once the negotiation is complete and the connection is maintained as determined in operation 730, in operation 735, the power receiving device can perform calibration according to the EPP via data communication with the power supply device. In operation 740, the power receiving device can determine whether the connection with the power supply device has been disconnected before calibration is complete.

[0085] Once calibration is complete and it is determined in operation 740 that the connection is being maintained, the power supply device can perform power transfer in operation 745. That is, in operation 745, the power receiving device can perform high-speed charging of the battery using the power supplied from the power supply device. In operation 750, the power receiving device can determine whether the connection with the power supply device has been lost during the high-speed charging of the battery. When it is determined in operation 750 that the connection is being maintained, the power receiving device can continue performing high-speed charging operation 745.

[0086] When a connection is determined to be broken in operation 750, in operation 755, the power receiving device can determine whether to reconnect to the power supply device. For example, the power receiving device checks the voltage value of the power rectified and output from the rectifier, and can determine to make a reconnection between the devices if the rectified voltage is equal to or greater than a minimum value (e.g., UVLO voltage). When a reconnection is determined to be made in operation 755, the power receiving device can restart from operation 710, which involves sending identification packets for wireless charging.

[0087] When it is determined in operation 720, operation 730 or operation 740 that the connection with the power supply equipment has been lost, in operation 760 the power receiving equipment may determine whether to reconnect to the power supply equipment.

[0088] When a reconnection is determined in operation 760, in operation 765, the power receiving device may send an identification packet to the power supply device. In operation 770, the power receiving device may send a packet for BPP configuration to the power supply device. In operation 775, the power supply device may perform power transfer. That is, in operation 775, the power receiving device may perform a low-speed charging operation of the battery using power supplied from the power supply device.

[0089] Figure 8 This is for illustrating the use of a power receiving device (e.g., according to an embodiment) Figure 1 Electronic devices 101 or Figure 2a The battery in the power receiving device 202 (e.g., Figure 1 Battery 189 or Figure 2a A flowchart of the operation of charging the battery 240. When the wireless charging circuit (e.g., Figure 1 The charging circuit configured in the power management module 188 or Figure 2a The wireless charging circuit 220 is connected via a coil (e.g., Figure 2a The coil 210) is supplied from the power supply device (e.g., Figure 1 Electronic device 102 or Figure 2a When the power supply equipment 201 is awakened by a power signal (e.g., digital verification), it can perform... Figure 8 The operation.

[0090] In operation 810, the wireless charging circuit can perform a configuration operation for receiving a first charging mode from a power supply device. As an example, a processor (e.g., processor 299) can be configured to output a signal related to the charging mode of the wireless charging circuit. The wireless charging circuit checks via a communication interface (e.g., ... Figure 2a The second communication interface 222 receives the status of signals from the processor and can perform a configuration operation for the first charging mode when the detected status is the first status. (See reference...) Figure 2bThe configuration operation for the first charging mode may include EPP configuration operation 242, negotiation operation 243, and calibration operation 244. According to an embodiment, when the wireless charging circuit performs the configuration operation for the first charging mode, the processor can change the signal output to the wireless charging circuit from a first state indicating the first charging mode to a second state indicating the second charging mode. For example, based on the detection by the wireless charging circuit that EPP configuration operation 242 has been initiated, the processor can change the voltage level of VGPIO output to the wireless charging circuit from high (first state) to low (second state). As another example, the processor checks through the wireless charging circuit whether negotiation operation 243 or calibration operation 244 is being performed, and based on this check, can change the voltage level of VGPIO output to the wireless charging circuit from high (first state) to low (second state).

[0091] In operation 820, the wireless charging circuit can check whether the configuration operation of the first charging mode has been completed.

[0092] When the configuration operation for the first charging mode is completed (operation 820 - Yes), in operation 830, the wireless charging circuit can operate in the first charging mode for receiving first power. For example, refer to... Figure 2b Based on the completion of calibration operation 244, the wireless charging circuit can perform power transfer operation 245. According to an embodiment, based on the completion of the configuration operation for the first charging mode, the processor can change the signal output to the wireless charging circuit from a second state to a first state. For example, the processor checks via the wireless charging circuit that power transfer operation 245 was initiated when the configuration operation for the first charging mode was completed, and at the time point at which the initiation of power transfer operation 245 was detected (e.g., t33, see...). Figure 3 The voltage level of VGPIO output to the wireless charging circuit can be changed from low (second state) to high (first state). According to an embodiment, the power supply device can stop power transmission when the user detaches the power receiving device from the charging pad of the power supply device or when the battery is 100% charged. Upon cessation of power transmission, the rectified voltage (Vrect) becomes lower than the minimum voltage (Vmin), and therefore the wireless charging circuit can be disabled. The processor can manage this via power management circuitry (e.g., Figure 2a The power management circuit 230 identifies when charging has stopped. At the point in time when charging has stopped (e.g., t54 (see...)...) Figure 5 ) or t64 (see Figure 6 After a specified period of time, the processor can change the signal output to the wireless charging circuit to the first state.

[0093] When the configuration operation for the first charging mode fails (operation 820 - No), in operation 840, the wireless charging circuit initiates wireless charging (e.g., the wireless charging circuit is awakened by a wake-up signal to perform identification operation 231; see also...). Figure 2b ), and based on the processor (e.g., Figure 2a The processor 299 receives a signal (e.g., a signal indicating a second state of a second charging mode) and performs a configuration operation (e.g., BPP configuration operation 232; see processor 299) for receiving a second charging mode that is lower than the first power from the power supply device. Figure 2b And, it can operate in a second charging mode for receiving second power. According to an embodiment, if the configuration operation based on the first charging mode fails, the processor can maintain the state of the signal output to the wireless charging circuit in the second state. Based on the end of power reception in the second charging mode, the processor can change the state of the signal output to the wireless charging circuit from the second state to the first state. For example, when the user separates the power receiving device from the charging pad of the power supply device or when the battery is 100% charged, the power supply device can stop power transmission. According to the cessation of power transmission, the rectified voltage (Vrect) becomes lower than the minimum voltage (Vmin), and therefore the wireless charging circuit can be deactivated. The processor can use power management circuitry (e.g., Figure 2a The power management circuit 230 identifies when charging has stopped. At the point in time when charging has stopped (e.g., t45 (see...)...) Figure 4 After a specified period of time, the processor can change the signal output to the wireless charging circuit to the first state.

[0094] Figure 9 This is for illustrating a power receiving device (e.g., according to an embodiment) Figure 1 Electronic device 101 or Figure 2a The wireless charging processor in the power receiving device 202 Figure 2a A flowchart of the operation of processor 299. Briefly describe or omit related information. Figure 8 Duplicate content.

[0095] In operation 910, when the wireless charging circuit performs a configuration operation for the first charging mode, the processor can change the state of the signal output to the wireless charging circuit from a first state (e.g., high) to a second state (e.g., low). For example, the processor checks whether the EPP configuration operation 242 has been initiated via the wireless charging circuit, and at the time point when the EPP configuration operation 242 is detected to have been initiated (e.g., t31 (see...)). Figure 3The processor can change the voltage level of the VGPIO output to the wireless charging circuit from a first state to a second state. As another example, the processor checks whether a negotiation operation 243 or a calibration operation 244 is being performed via the wireless charging circuit, and based on this check, can change the voltage level of the VGPIO output to the wireless charging circuit from a first state to a second state.

[0096] In operation 920, after completing the configuration operation for the first charging mode, the processor can change the state of the signal output to the wireless charging circuit from the second state to the first state. For example, the processor checks the power transfer operation 245 (see [link to relevant documentation]) when the configuration operation for the first charging mode is completed via the wireless charging circuit. Figure 2b The power transmission operation 245 is initiated at the time when it is detected that the power transmission operation 245 has been initiated (e.g., t33 (see...)). Figure 3 The processor can change the voltage level of the VGPIO output to the wireless charging circuit from the second state to the first state. As another example, the power supply can stop power delivery when the user detaches the power receiving device from the charging pad of the power supply device, or when the battery is 100% charged. Upon cessation of power delivery, the rectified voltage (Vrect) becomes below the minimum voltage (Vmin), and therefore the wireless charging circuit can be disabled. The processor can then manage this via power management circuitry (e.g., ...). Figure 2a The power management circuit 230 identifies when charging has stopped. At the point in time when charging has stopped (e.g., t54 (see...)...) Figure 5 ) or t64 (see Figure 6 After a specified period of time, the processor can change the signal output to the wireless charging circuit to the first state.

[0097] Figure 10 This is for illustrating a power receiving device (e.g., according to an embodiment) Figure 1 Electronic device 101 or Figure 2a The wireless charging processor in the power receiving device 202 Figure 2a A flowchart of the operation of processor 299. Briefly describe or omit related information. Figure 8 Duplicate content.

[0098] In operation 1010, when the configuration operation of the first charging mode fails, while the wireless charging circuit is operating in the second charging mode, the processor can maintain the state of the signal output to the wireless charging circuit in the second state.

[0099] In operation 1020, based on the termination of power reception in the second charging mode, the processor can change the state of the signal output to the wireless charging circuit from the second state to the first state. For example, when the user detaches the power receiving device from the charging pad of the power supply device or when the battery is 100% charged, the power supply device can stop power transmission. Due to the cessation of power transmission, the rectified voltage (Vrect) becomes lower than the minimum voltage (Vmin), and therefore the wireless charging circuit can be deactivated. The processor can then use power management circuitry (e.g., ...) Figure 2a The power management circuit 230 identifies when charging has stopped. At the point in time when charging has stopped (e.g., t45 (see...)...) Figure 4 After a specified period of time, the processor can change the signal output to the wireless charging circuit to the first state.

[0100] Figure 11 This is for illustrating the use of a power receiving device (e.g., according to an embodiment) Figure 1 Electronic devices 101 or Figure 2a The battery in the power receiving device 202 (e.g., Figure 1 Battery 189 or Figure 2a A flowchart of the operation of charging the battery 240. When the wireless charging circuit (e.g., Figure 1 The charging circuit configured in the power management module 188 or the wireless charging circuit 220 of Figure 2 is connected via a coil (e.g., Figure 2a The coil 210) is supplied from the power supply device (e.g., Figure 1 Electronic device 102 or Figure 2a When the power supply equipment 201 is awakened by a power signal (e.g., digital verification), it can perform... Figure 11 The operation.

[0101] In operation 1110, the power receiving device can receive a wake-up signal (e.g., digital verification) from the power supply device via a coil to wake up the wireless charging circuit.

[0102] In operation 1120, based on the voltage level of the wake-up signal, the power receiving device can configure the wireless charging circuit to operate in a first charging mode (e.g., EPP mode) or a second charging mode (e.g., BPP mode), wherein the first charging mode is used to receive a first power from the power supply device, and the second charging mode is used to receive a second power from the power supply device that is lower than the first power. As an example, when the voltage level of the wake-up signal is higher than a minimum value (e.g., UVLO voltage) and lower than a threshold (e.g., approximately 2.6V), the power receiving device can configure the wireless charging circuit to operate in the second charging mode. When the voltage level of the wake-up signal is higher than the threshold, the power receiving device can configure the wireless charging circuit to operate in the first charging mode.

[0103] According to an embodiment, an electronic device (e.g., a power receiving device 202) may include: a battery; a coil; a wireless charging circuit configured to rectify power received from a power supply device via the coil and provide rectified power to charge the battery; and a processor configured to output a signal related to a charging mode of the wireless charging circuit. The wireless charging circuit may be configured to perform a configuration operation for a first charging mode for receiving a first power from the power supply device. The wireless charging circuit may be configured to operate in the first charging mode for receiving the first power when the configuration operation of the first charging mode is completed. The wireless charging circuit may be configured to initiate wireless charging when the configuration operation of the first charging mode fails, and perform a configuration operation for a second charging mode for receiving a second power lower than the first power from the power supply device based on a signal received from the processor, and operate in the second charging mode for receiving the second power.

[0104] The processor can be configured to change the signal output to the wireless charging circuit from a first state indicating the first charging mode to a second state indicating the second charging mode while the wireless charging circuit performs the configuration operation of the first charging mode.

[0105] The configuration operation of the first charging mode may include: a power value configuration operation for configuring the power value to be supplied from the power supply device to the electronic device; a negotiation operation for negotiating the maximum power value that can be supplied from the power supply device to the electronic device; and a calibration operation for calibrating the power value to be supplied from the power supply device to the electronic device.

[0106] The processor can be configured to change the signal output to the wireless charging circuit from a first state to a second state while performing a power value configuration operation, a negotiation operation, or a calibration operation.

[0107] The processor can be configured to change the signal output to the wireless charging circuit from the second state to the first state after the configuration operation of the first charging mode is completed.

[0108] When the configuration operation of the first charging mode fails, the processor can be configured to: while receiving power in the second charging mode, maintain the signal output to the wireless charging circuit in a second state indicating the second charging mode. The processor can also be configured to: after power reception in the second charging mode ends, change the signal output to the wireless charging circuit from the second state to a first state indicating the first charging mode.

[0109] The processor can be configured to change the signal output to the wireless charging circuit from the second state to the first state after a specified time has elapsed since the power reception ended in the second charging mode.

[0110] The processor can be configured to recognize the end of battery charging when the voltage of the rectified power in the wireless charging circuit is equal to or less than a specified minimum value.

[0111] The processor and the wireless charging circuit can be connected via a designated communication interface. The processor can be configured to, while the wireless charging circuit is performing a configuration operation for a first charging mode, change the voltage level of the signal output to the charging circuit via the communication interface from a first level corresponding to the first charging mode to a second level corresponding to the second charging mode. The processor can also be configured to, upon completion of the configuration operation for the first charging mode, change the voltage level of the signal output to the charging circuit via the communication interface from the second level back to the first level.

[0112] The communication interface may include general purpose input / output (GPIO) pins.

[0113] The configuration operation for the first charging mode may include a calibration operation for calibrating the power value in the wireless charging circuitry. The processor can be configured to change the voltage level from a second level to a first level upon completion of the calibration operation.

[0114] The processor can be configured to change the voltage level from the second level to the first level after the battery charging ends following the completion of the configuration operation in the first charging mode.

[0115] The processor can be configured to change the voltage level from the second level to the first level after a specified time has elapsed since the battery charging ended.

[0116] According to an embodiment, a method for operating an electronic device (e.g., a power receiving device 202) may include the following operations: A wireless charging circuit of the electronic device performs a configuration operation for a first charging mode for receiving first power from a power supply device via a coil of the electronic device. The method may include: when the configuration operation of the first charging mode is completed, the wireless charging circuit operates in the first charging mode for receiving the first power. The method may also include: when the configuration operation of the first charging mode fails, initiating wireless charging via the wireless charging circuit, performing a configuration operation for a second charging mode for receiving a second power lower than the first power from the power supply device based on a signal output by the processor of the electronic device to the wireless charging circuit, and operating in the second charging mode for receiving the second power.

[0117] The method may also include the following operation: while the wireless charging circuit performs the configuration operation of the first charging mode, the processor changes the signal output to the wireless charging circuit from a first state indicating the first charging mode to a second state indicating the second charging mode.

[0118] The method may also include the following operation: after the configuration operation of the first charging mode is completed, the processor changes the signal output to the wireless charging circuit from the second state to the first state.

[0119] The method may further include the following operation: when the configuration operation of the first charging mode fails, while receiving power in the second charging mode, the processor maintains the signal output to the wireless charging circuit in a second state indicating the second charging mode. The method may further include the following operation: after power reception ends in the second charging mode, the processor changes the signal output to the wireless charging circuit from the second state to a first state indicating the first charging mode.

[0120] The operation of changing from the second state to the first state may include: after a specified time has elapsed since the power reception ends in the second charging mode, changing the signal output to the wireless charging circuit from the second state to the first state.

[0121] The processor and the wireless charging circuit can be connected via a designated communication interface. The method may further include the following operation: when the wireless charging circuit performs a configuration operation for a first charging mode, the processor changes the voltage level of the signal output to the charging circuit via the communication interface from a first level corresponding to the first charging mode to a second level corresponding to the second charging mode. The method may also include the following operation: upon completion of the configuration operation based on the first charging mode, the processor changes the voltage level of the signal output to the charging circuit via the communication interface from the second level back to the first level.

[0122] The configuration operation for the first charging mode may include a calibration operation for calibrating the power value in the wireless charging circuit. The method may also include the following operation: based on the completion of the calibration operation, the processor changes the voltage level from a second level to a first level.

[0123] The method may also include the following operation: after the battery charging ends following the completion of the configuration operation of the first charging mode, the processor changes the voltage level from the second level to the first level.

[0124] According to an embodiment, a non-transitory recording medium may store instructions readable by an electronic device (e.g., power receiving device 202). When executed, the instructions may cause the electronic device to perform the following operations: configure a first charging mode via the wireless charging circuit of the electronic device, the first charging mode being used to receive first power from a power supply device via a coil of the electronic device. When executed, the instructions may also cause the electronic device to perform the following operations: when the configuration operation of the first charging mode is completed, operate the wireless charging circuit in the first charging mode for receiving the first power. When the instructions are executed, the electronic device may perform the following operations: when the configuration operation of the first charging mode fails, initiate wireless charging via the wireless charging circuit, and, based on a signal output by the processor of the electronic device to the wireless charging circuit, execute a configuration operation for a second charging mode for receiving a second power lower than the first power from the power supply device, and operate in the second charging mode for receiving the second power.

[0125] In the above explanation, the prefixes such as "first", "second", and "third" are only used to distinguish the same name, and they do not inherently carry any special meaning such as importance or order.

[0126] The electronic device according to various embodiments can be one of a variety of types of electronic devices. Electronic devices may include, for example, portable communication devices (e.g., smartphones), computer devices, portable multimedia devices, portable medical devices, cameras, wearable devices, or home appliances. According to embodiments of this disclosure, the electronic device is not limited to those described above.

[0127] It should be understood that the various embodiments of this disclosure and the terminology used therein are not intended to limit the technical features set forth herein to the specific embodiments, but rather to include various changes, equivalents, or substitutions to the respective embodiments. In the description of the drawings, similar reference numerals may be used to refer to similar or related elements. It will be understood that nouns in the singular form corresponding to terms 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 enumerated together with the corresponding phrase among the plurality of phrases. As used herein, terms such as “first” and “second” or “first” and “second” may be used to simply distinguish the respective component from another component and do not limit the component in other respects (e.g., importance or order). It will be understood that, whether the terms “operably” or “communically” are used or not, if an element (e.g., a first element) is referred to as “combined with another element (e.g., a second element),” “combined to another element (e.g., a second element),” “connected to another element (e.g., a second element),” or “connected to another element (e.g., a second element)”, it means that the element can be directly (e.g., wiredly) connected to the other element, wirelessly connected to the other element, or connected to the other element via a third element.

[0128] As used in connection with various embodiments of this disclosure, the term "module" may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with other terms such as "logic," "logic block," "part," or "circuit." A module may be a single integrated component adapted to perform one or more functions, or the smallest unit or part of such a single integrated component. For example, according to embodiments, a module may be implemented in the form of an application-specific integrated circuit (ASIC).

[0129] The various embodiments set forth herein can be implemented as software (e.g., program 140) containing one or more instructions readable by a machine (e.g., electronic device 101) stored in a storage medium (e.g., internal memory 136 or external memory 138). For example, under the control of a processor, the processor (e.g., processor 120) of the machine (e.g., electronic device 101) can invoke and execute at least one of the one or more instructions stored in the storage medium, with or without the use of one or more other components. This enables the machine to operate to perform at least one function according to the invoked at least one instruction. The one or more instructions may include code generated by a compiler or code executable by an interpreter. Machine-readable storage media may be provided in the form of non-transitory storage media. The term "non-transitory" simply means that the storage medium is a tangible device and does not include signals (e.g., electromagnetic waves), but this term does not distinguish between data being stored semi-permanently in the storage medium and data being temporarily stored in the storage medium.

[0130] According to embodiments, methods according to various embodiments of this disclosure may be included and provided in a computer program product. The computer program product may be traded as a product between a seller and a buyer. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., a compact disk read-only memory (CD-ROM)), or may be distributed online (e.g., downloaded or uploaded) via an app store (e.g., the Play Store™), or may be distributed directly between two user devices (e.g., smartphones) (e.g., downloaded or uploaded). If distributed online, at least a portion of the computer program product may be temporarily generated, or at least a portion of the computer program product may be stored at least temporarily in a machine-readable storage medium (such as the memory of a manufacturer's server, an app store's server, or a forwarding server).

[0131] According to various embodiments, each of the above-described components (e.g., a module or program) may include a single entity or multiple entities, and some of the multiple entities may be separately disposed in different components. According to various embodiments, one or more of the above-described components may be omitted, or one or more other components may be added. Optionally or additionally, multiple components (e.g., modules or programs) may be integrated into a single component. In this case, according to various embodiments, the integrated component may still perform the one or more functions of each of the multiple components in the same or similar manner as the corresponding component of the multiple components performed one or more functions before integration. According to various embodiments, the operations performed by a module, program, or other component may be performed sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations may be run in a different order or omitted, or one or more other operations may be added.

Claims

1. An electronic device, comprising: Battery; coil; The wireless charging circuit is configured to rectify the power received from the power supply device through the coil and provide the rectified power to charge the battery. as well as The processor is configured to output signals related to the charging mode of the wireless charging circuit. The wireless charging circuit is configured as follows: Perform configuration operations for a first charging mode to receive first power from the power supply equipment; When the configuration operation of the first charging mode is completed, operation is performed in the first charging mode for receiving the first power; and When the configuration operation of the first charging mode fails, wireless charging is initiated. Based on the signal received from the processor, a configuration operation for a second charging mode to receive a second power lower than the first power from the power supply device is performed, and operation is carried out in the second charging mode for receiving the second power.

2. The electronic device according to claim 1, wherein, The processor is configured to change the signal output to the wireless charging circuit from a first state indicating the first charging mode to a second state indicating the second charging mode when the wireless charging circuit performs a configuration operation for the first charging mode.

3. The electronic device according to claim 2, wherein, The configuration steps for the first charging mode include: The power value configuration operation is used to configure the power value supplied from the power supply equipment to the electronic devices; Negotiation operation, used to negotiate the maximum power value that can be supplied to electronic devices from the power supply equipment; and The calibration operation is used to calibrate the power values ​​supplied to electronic devices from the power supply equipment, and The processor is configured to change the signal output to the wireless charging circuit from a first state to a second state when performing a power value configuration operation, a negotiation operation, or a calibration operation.

4. The electronic device according to claim 2, wherein, The processor is configured to change the signal output to the wireless charging circuit from the second state to the first state after the configuration operation of the first charging mode is completed.

5. The electronic device according to claim 1, wherein, When the configuration operation of the first charging mode fails, the processor is configured to: when receiving power in the second charging mode, maintain the signal output to the wireless charging circuit in a second state indicating the second charging mode, and after the power reception in the second charging mode ends, change the signal output to the wireless charging circuit from the second state to a first state indicating the first charging mode.

6. The electronic device according to claim 5, wherein, The processor is configured to change the signal output to the wireless charging circuit from the second state to the first state after a specified time has elapsed since the power reception ended in the second charging mode.

7. The electronic device according to claim 6, wherein, The processor is configured to recognize the end of battery charging when the voltage of the rectified power in the wireless charging circuit is equal to or less than a specified minimum value.

8. The electronic device according to claim 1, wherein, The processor and wireless charging circuit are connected via a designated communication interface. The processor is configured to, while performing a configuration operation for a first charging mode in the wireless charging circuit, change the voltage level of the signal output to the charging circuit through the communication interface from a first level corresponding to the first charging mode to a second level corresponding to the second charging mode, and, based on the completion of the configuration operation for the first charging mode, change the voltage level of the signal output to the charging circuit through the communication interface from the second level back to the first level.

9. The electronic device according to claim 8, wherein, The communication interface includes general purpose input / output (GPIO) pins.

10. The electronic device according to claim 8, wherein, The configuration operations for the first charging mode include calibration operations for calibrating the power values ​​in the wireless charging circuit, and The processor is configured to change the voltage level from the second level to the first level based on the calibration operation.

11. The electronic device according to claim 8, wherein, The processor is configured to change the voltage level from the second level to the first level after the battery charging ends following the completion of the configuration operation in the first charging mode.

12. The electronic device according to claim 11, wherein, The processor is configured to change the voltage level from the second level to the first level after a specified time has elapsed since the battery charging ended.

13. A method for operating an electronic device, comprising: The configuration operation of a first charging mode is performed by the wireless charging circuit of the electronic device. The first charging mode is used to receive first power from the power supply device through the coil of the electronic device. When the configuration operation of the first charging mode is completed, the wireless charging circuit operates in the first charging mode for receiving the first power. as well as When the configuration operation of the first charging mode fails, wireless charging is initiated through the wireless charging circuit. Based on the signal output from the processor of the electronic device to the wireless charging circuit, the configuration operation of the second charging mode is executed. The second charging mode is used to receive a second power lower than the first power from the power supply device and operates in the second charging mode for receiving the second power.

14. The method of claim 13, further comprising: When the wireless charging circuit performs the configuration operation of the first charging mode, the processor changes the signal output to the wireless charging circuit from the first state indicating the first charging mode to the second state indicating the second charging mode.

15. The method of claim 13, further comprising: When the configuration operation of the first charging mode fails, while receiving power in the second charging mode, the processor keeps the signal output to the wireless charging circuit in the second state indicating the second charging mode. and After power reception ends in the second charging mode, the processor changes the signal output to the wireless charging circuit from the second state to the first state indicating the first charging mode.

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