WO2023033430A1 - Appareil électronique et procédé de commande de charge sans fil l'utilisant - Google Patents

Appareil électronique et procédé de commande de charge sans fil l'utilisant Download PDF

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Publication number
WO2023033430A1
WO2023033430A1 PCT/KR2022/012518 KR2022012518W WO2023033430A1 WO 2023033430 A1 WO2023033430 A1 WO 2023033430A1 KR 2022012518 W KR2022012518 W KR 2022012518W WO 2023033430 A1 WO2023033430 A1 WO 2023033430A1
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WIPO (PCT)
Prior art keywords
power
transmission device
electronic device
power transmission
battery
Prior art date
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PCT/KR2022/012518
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English (en)
Korean (ko)
Inventor
류지수
이승태
Original Assignee
삼성전자 주식회사
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Application filed by 삼성전자 주식회사 filed Critical 삼성전자 주식회사
Priority to US17/895,604 priority Critical patent/US20230062165A1/en
Publication of WO2023033430A1 publication Critical patent/WO2023033430A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/02—Means for indicating or recording specially adapted for thermometers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/60—Circuit arrangements or systems for wireless supply or distribution of electric power responsive to the presence of foreign objects, e.g. detection of living beings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • Various embodiments of the present disclosure relate to an electronic device and a wireless charging control method using the same.
  • An electronic device may perform wireless charging or non-contact charging using wireless power transfer technology.
  • Wireless power transmission technology wirelessly transfers power from a power transmitter to an electronic device without a separate connector connection between an electronic device (e.g., a power receiver) and a power transmitter (e.g., a wireless charger) so that the battery of the electronic device may be a technology that is charged.
  • the power transmission device may function in a wireless charging protection mode for detection of a metal foreign object.
  • the wireless charging protection mode may be a mode for detecting the presence or absence of a metallic foreign material and preventing heat generation due to the metallic foreign material during wireless charging of the electronic device.
  • the battery may be charged with normal charging power, and accordingly, at the top of the back cover of the electronic device and/or the power transmission device. Thermal deformation may occur.
  • a metallic foreign object is detected based on a charge amount of a battery charged using power wirelessly received from a power transmission device for a specified time. existence can be checked.
  • the electronic device may determine that a metallic foreign material is present and change a heating control condition.
  • An electronic device includes a power receiving unit including a power receiving coil, a battery, and at least one processor operatively connected to the power receiving unit and the battery, wherein the at least one processor , Check whether the wireless charging protection mode is entered, and if it is determined that the wireless charging protection mode is not entered, wirelessly receive power in a first range from the power transmission device through the power receiver, and the first range charging the battery using the power of, checking the charge amount of the battery charged for a specified time, and confirming that a metal foreign object exists when the charge amount of the battery is confirmed to be less than a specified value and can be set to change the heating control conditions.
  • a method for controlling wireless charging of an electronic device includes an operation of checking whether a wireless charging protection mode has entered, and when it is determined that the wireless charging protection mode has not entered, the electronic device transmits the electronic device. wirelessly receiving power in a first range through a power receiver of the device, charging a battery using the power in the first range, and checking the amount of charge of the battery charged for a specified time; and When it is confirmed that the filling amount is less than the specified value, an operation of confirming that a metal foreign object is present and changing a heating control condition may be included.
  • An electronic device in a state in which the wireless charging protection mode is not operating, can check the existence of a metallic foreign object based on the amount of charge of the battery charged for a specified time, thereby ensuring safety due to the metallic foreign body. Accidents can be prevented.
  • the electronic device determines that a metallic foreign material is present when the charge amount of the battery is less than a specified value, changes the heating control condition, and charges the battery with low power, so that the rear cover of the electronic device and/or prevent thermal deformation that may occur on the top of the power transmission device.
  • FIG. 1 is a block diagram of an electronic device in a network environment, according to various embodiments.
  • FIG. 2 is a block diagram of a power management module and battery, in accordance with various embodiments.
  • 3A is a diagram schematically illustrating an operation in which a power transmission device charges a power reception device according to various embodiments.
  • 3B is a diagram illustrating an operation of a power transmission device detecting an object, such as a power reception device, according to various embodiments.
  • FIG. 4 is a block diagram illustrating an electronic device, according to various embodiments.
  • FIG. 5 is a flowchart illustrating a method of controlling wireless charging of an electronic device according to various embodiments.
  • FIG. 6 is a flowchart illustrating a method of controlling wireless charging of an electronic device according to various embodiments.
  • FIGS. 7A and 7B are diagrams for explaining a method of determining whether a metallic foreign material exists on an upper portion of a power transmission device based on a charge amount of a battery, according to various embodiments.
  • FIG. 8 is a view for explaining a method of charging a battery after changing a heating control condition related to a temperature of a power receiving coil based on the existence of a metallic foreign material on the top of a power transmission device according to various embodiments; am.
  • FIG. 1 is a block diagram of an electronic device 101 within a network environment 100, according to various embodiments.
  • an electronic device 101 communicates with an electronic device 102 through a first network 198 (eg, a short-range wireless communication network) or through a second network 199. It may communicate with at least one of the electronic device 104 or the server 108 through (eg, a long-distance wireless communication network). According to an embodiment, the electronic device 101 may communicate with the electronic device 104 through the server 108 .
  • a first network 198 eg, a short-range wireless communication network
  • a second network 199 e.g., a second network 199. It may communicate with at least one of the electronic device 104 or the server 108 through (eg, a long-distance wireless communication network). According to an embodiment, the electronic device 101 may communicate with the electronic device 104 through the server 108 .
  • the electronic device 101 includes a processor 120, a memory 130, an input module 150, an audio output module 155, a display module 160, an audio module 170, a sensor module ( 176), interface 177, connection terminal 178, haptic module 179, camera module 180, power management module 188, battery 189, communication module 190, subscriber identification module 196 , or the antenna module 197 may be included.
  • at least one of these components eg, the connection terminal 178) may be omitted or one or more other components may be added.
  • some of these components eg, sensor module 176, camera module 180, or antenna module 197) are integrated into a single component (eg, display module 160). It can be.
  • the processor 120 for example, executes software (eg, the program 140) to cause at least one other component (eg, hardware or software component) of the electronic device 101 connected to the processor 120. It can control and perform various data processing or calculations. According to one embodiment, as at least part of data processing or operation, processor 120 transfers instructions or data received from other components (e.g., sensor module 176 or communication module 190) to volatile memory 132. , processing commands or data stored in the volatile memory 132 , and storing resultant data in the non-volatile memory 134 .
  • software eg, the program 140
  • processor 120 transfers instructions or data received from other components (e.g., sensor module 176 or communication module 190) to volatile memory 132. , processing commands or data stored in the volatile memory 132 , and storing resultant data in the non-volatile memory 134 .
  • the processor 120 includes a main processor 121 (eg, a central processing unit or an application processor) or a secondary processor 123 (eg, a graphic processing unit, a neural network processing unit ( NPU: neural processing unit (NPU), image signal processor, sensor hub processor, or communication processor).
  • a main processor 121 eg, a central processing unit or an application processor
  • a secondary processor 123 eg, a graphic processing unit, a neural network processing unit ( NPU: neural processing unit (NPU), image signal processor, sensor hub processor, or communication processor.
  • NPU neural network processing unit
  • the secondary processor 123 may use less power than the main processor 121 or be set to be specialized for a designated function.
  • the secondary processor 123 may be implemented separately from or as part of the main processor 121 .
  • the secondary processor 123 may, for example, take the place of the main processor 121 while the main processor 121 is in an inactive (eg, sleep) state, or the main processor 121 is active (eg, running an application). ) state, together with the main processor 121, at least one of the components of the electronic device 101 (eg, the display module 160, the sensor module 176, or the communication module 190) It is possible to control at least some of the related functions or states.
  • the auxiliary processor 123 eg, an image signal processor or a communication processor
  • the auxiliary processor 123 may include a hardware structure specialized for processing an artificial intelligence model.
  • AI models can be created through machine learning. Such learning may be performed, for example, in the electronic device 101 itself where the artificial intelligence model is performed, or may be performed through a separate server (eg, the server 108).
  • the learning algorithm may include, for example, supervised learning, unsupervised learning, semi-supervised learning or reinforcement learning, but in the above example Not limited.
  • the artificial intelligence model may include a plurality of artificial neural network layers.
  • Artificial neural networks include deep neural networks (DNNs), convolutional neural networks (CNNs), recurrent neural networks (RNNs), restricted boltzmann machines (RBMs), deep belief networks (DBNs), bidirectional recurrent deep neural networks (BRDNNs), It may be one of deep Q-networks or a combination of two or more of the foregoing, but is not limited to the foregoing examples.
  • the artificial intelligence model may include, in addition or alternatively, software structures in addition to hardware structures.
  • the memory 130 may store various data used by at least one component (eg, the processor 120 or the sensor module 176) of the electronic device 101 .
  • the data may include, for example, input data or output data for software (eg, program 140) and commands related thereto.
  • the memory 130 may include volatile memory 132 or non-volatile memory 134 .
  • the program 140 may be stored as software in the memory 130 and may include, for example, an operating system 142 , middleware 144 , or an application 146 .
  • the input module 150 may receive a command or data to be used by a component (eg, the processor 120) of the electronic device 101 from the outside of the electronic device 101 (eg, a user).
  • the input module 150 may include, for example, a microphone, a mouse, a keyboard, a key (eg, a button), or a digital pen (eg, a stylus pen).
  • the sound output module 155 may output sound signals to the outside of the electronic device 101 .
  • the sound output module 155 may include, for example, a speaker or a receiver.
  • the speaker can be used for general purposes such as multimedia playback or recording playback.
  • a receiver may be used to receive an incoming call. According to one embodiment, the receiver may be implemented separately from the speaker or as part of it.
  • the display module 160 may visually provide information to the outside of the electronic device 101 (eg, a user).
  • the display module 160 may include, for example, a display, a hologram device, or a projector and a control circuit for controlling the device.
  • the display module 160 may include a touch sensor configured to detect a touch or a pressure sensor configured to measure the intensity of force generated by the touch.
  • the audio module 170 may convert sound into an electrical signal or vice versa. According to an embodiment, the audio module 170 acquires sound through the input module 150, the sound output module 155, or an external electronic device connected directly or wirelessly to the electronic device 101 (eg: Sound may be output through the electronic device 102 (eg, a speaker or a headphone).
  • the audio module 170 acquires sound through the input module 150, the sound output module 155, or an external electronic device connected directly or wirelessly to the electronic device 101 (eg: Sound may be output through the electronic device 102 (eg, a speaker or a headphone).
  • the sensor module 176 detects an operating state (eg, power or temperature) of the electronic device 101 or an external environmental state (eg, a user state), and generates an electrical signal or data value corresponding to the detected state. can do.
  • the sensor module 176 may include, for example, a gesture sensor, a gyro sensor, an air pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an infrared (IR) sensor, a bio sensor, It may include a temperature sensor, humidity sensor, or light sensor.
  • the interface 177 may support one or more designated protocols that may be used to directly or wirelessly connect the electronic device 101 to an external electronic device (eg, the electronic device 102).
  • the interface 177 may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.
  • HDMI high definition multimedia interface
  • USB universal serial bus
  • SD card interface Secure Digital Card interface
  • audio interface audio interface
  • connection terminal 178 may include a connector through which the electronic device 101 may be physically connected to an external electronic device (eg, the electronic device 102).
  • the connection terminal 178 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (eg, a headphone connector).
  • the haptic module 179 may convert electrical signals into mechanical stimuli (eg, vibration or motion) or electrical stimuli that a user may perceive through tactile or kinesthetic senses.
  • the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulation device.
  • the camera module 180 may capture still images and moving images. According to one embodiment, the camera module 180 may include one or more lenses, image sensors, image signal processors, or flashes.
  • the power management module 188 may manage power supplied to the electronic device 101 .
  • the power management module 188 may be implemented as at least part of a power management integrated circuit (PMIC), for example.
  • PMIC power management integrated circuit
  • the battery 189 may supply power to at least one component of the electronic device 101 .
  • the battery 189 may include, for example, a non-rechargeable primary cell, a rechargeable secondary cell, or a fuel cell.
  • the communication module 190 is a direct (eg, wired) communication channel or a wireless communication channel between the electronic device 101 and an external electronic device (eg, the electronic device 102, the electronic device 104, or the server 108). Establishment and communication through the established communication channel may be supported.
  • the communication module 190 may include one or more communication processors that operate independently of the processor 120 (eg, an application processor) and support direct (eg, wired) communication or wireless communication.
  • the communication module 190 may be a wireless communication module 192 (eg, a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 194 (eg, a : a local area network (LAN) communication module or a power line communication module).
  • a corresponding communication module is a first network 198 (eg, a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network 199 (eg, a legacy communication module).
  • the wireless communication module 192 uses subscriber information (eg, International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module 196 within a communication network such as the first network 198 or the second network 199.
  • IMSI International Mobile Subscriber Identifier
  • the wireless communication module 192 may support a 5G network after a 4G network and a next-generation communication technology, for example, NR access technology (new radio access technology).
  • NR access technologies include high-speed transmission of high-capacity data (enhanced mobile broadband (eMBB)), minimization of terminal power and access of multiple terminals (massive machine type communications (mMTC)), or high reliability and low latency (ultra-reliable and low latency (URLLC)).
  • eMBB enhanced mobile broadband
  • mMTC massive machine type communications
  • URLLC ultra-reliable and low latency
  • -latency communications can be supported.
  • the wireless communication module 192 may support a high frequency band (eg, mmWave band) to achieve a high data rate, for example.
  • the wireless communication module 192 uses various technologies for securing performance in a high frequency band, such as beamforming, massive multiple-input and multiple-output (MIMO), and full-dimensional multiplexing. Technologies such as input/output (FD-MIMO: full dimensional MIMO), array antenna, analog beam-forming, or large scale antenna may be supported.
  • the wireless communication module 192 may support various requirements defined for the electronic device 101, an external electronic device (eg, the electronic device 104), or a network system (eg, the second network 199).
  • the wireless communication module 192 may be used to realize peak data rate (eg, 20 Gbps or more) for realizing eMBB, loss coverage (eg, 164 dB or less) for realizing mMTC, or U-plane latency (for realizing URLLC).
  • peak data rate eg, 20 Gbps or more
  • loss coverage eg, 164 dB or less
  • U-plane latency for realizing URLLC.
  • DL downlink
  • UL uplink each of 0.5 ms or less, or round trip 1 ms or less
  • the antenna module 197 may transmit or receive signals or power to the outside (eg, an external electronic device).
  • the antenna module 197 may include an antenna including a radiator formed of a conductor or a conductive pattern formed on a substrate (eg, PCB).
  • the antenna module 197 may include a plurality of antennas (eg, an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network such as the first network 198 or the second network 199 is selected from the plurality of antennas by the communication module 190, for example. can be chosen A signal or power may be transmitted or received between the communication module 190 and an external electronic device through the selected at least one antenna.
  • other components eg, a radio frequency integrated circuit (RFIC) may be additionally formed as a part of the antenna module 197 in addition to the radiator.
  • RFIC radio frequency integrated circuit
  • the antenna module 197 may form a mmWave antenna module.
  • the mmWave antenna module includes a printed circuit board, an RFIC disposed on or adjacent to a first surface (eg, a bottom surface) of the printed circuit board and capable of supporting a designated high frequency band (eg, mmWave band); and a plurality of antennas (eg, array antennas) disposed on or adjacent to a second surface (eg, a top surface or a side surface) of the printed circuit board and capable of transmitting or receiving signals of the designated high frequency band. can do.
  • peripheral devices eg, a bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)
  • signal e.g. commands or data
  • commands or data may be transmitted or received between the electronic device 101 and the external electronic device 104 through the server 108 connected to the second network 199 .
  • Each of the external electronic devices 102 or 104 may be the same as or different from the electronic device 101 .
  • all or part of operations executed in the electronic device 101 may be executed in one or more external electronic devices among the external electronic devices 102 , 104 , or 108 .
  • the electronic device 101 when the electronic device 101 needs to perform a certain function or service automatically or in response to a request from a user or another device, the electronic device 101 instead of executing the function or service by itself.
  • one or more external electronic devices may be requested to perform the function or at least part of the service.
  • One or more external electronic devices receiving the request may execute at least a part of the requested function or service or an additional function or service related to the request, and deliver the execution result to the electronic device 101 .
  • the electronic device 101 may provide the result as at least part of a response to the request as it is or additionally processed.
  • cloud computing distributed computing, mobile edge computing (MEC), or client-server computing technology may be used.
  • the electronic device 101 may provide an ultra-low latency service using, for example, distributed computing or mobile edge computing.
  • the external electronic device 104 may include an internet of things (IoT) device.
  • Server 108 may be an intelligent server using machine learning and/or neural networks. According to one embodiment, the external electronic device 104 or server 108 may be included in the second network 199 .
  • the electronic device 101 may be applied to intelligent services (eg, smart home, smart city, smart car, or health care) based on 5G communication technology and IoT-related technology.
  • Electronic devices may be devices of various types.
  • the electronic device may include, for example, a portable communication device (eg, a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance.
  • a portable communication device eg, a smart phone
  • a computer device e.g., a smart phone
  • a portable multimedia device e.g., a portable medical device
  • a camera e.g., a portable medical device
  • a camera e.g., a portable medical device
  • a camera e.g., a portable medical device
  • a camera e.g., a camera
  • a wearable device e.g., a smart bracelet
  • first, second, or first or secondary may simply be used to distinguish that component from other corresponding components, and may refer to that component in other respects (eg, importance or order) is not limited.
  • a (eg, first) component is said to be “coupled” or “connected” to another (eg, second) component, with or without the terms “functionally” or “communicatively.”
  • the certain component may be connected to the other component directly (eg by wire), wirelessly, or through a third component.
  • module used in various embodiments of this document may include a unit implemented in hardware, software, or firmware, and is interchangeable with terms such as, for example, logic, logical blocks, parts, or circuits.
  • a module may be an integrally constructed component or a minimal unit of components or a portion thereof that performs one or more functions.
  • the module may be implemented in the form of an application-specific integrated circuit (ASIC).
  • ASIC application-specific integrated circuit
  • a storage medium eg, internal memory 136 or external memory 138
  • a machine eg, electronic device 101
  • a processor eg, the processor 120
  • a device eg, the electronic device 101
  • the one or more instructions may include code generated by a compiler or code executable by an interpreter.
  • the device-readable storage medium may be provided in the form of a non-transitory storage medium.
  • the storage medium is a tangible device and does not contain a signal (e.g. electromagnetic wave), and this term refers to the case where data is stored semi-permanently in the storage medium. It does not discriminate when it is temporarily stored.
  • a signal e.g. electromagnetic wave
  • the method according to various embodiments disclosed in this document may be included and provided in a computer program product.
  • Computer program products may be traded between sellers and buyers as commodities.
  • a computer program product is distributed in the form of a device-readable storage medium (e.g. compact disc read only memory (CD-ROM)), or through an application store (e.g. Play Store TM ) or on two user devices (e.g. It can be distributed (eg downloaded or uploaded) online, directly between smart phones.
  • a device e.g. compact disc read only memory (CD-ROM)
  • an application store e.g. Play Store TM
  • It can be distributed (eg downloaded or uploaded) online, directly between smart phones.
  • at least part of the computer program product may be temporarily stored or temporarily created in a storage medium readable by a device such as a manufacturer's server, an application store server, or a relay server's memory.
  • each component (eg, module or program) of the above-described components may include a single object or a plurality of entities, and some of the plurality of entities may be separately disposed in other components. there is.
  • one or more components or operations among the aforementioned corresponding components may be omitted, or one or more other components or operations may be added.
  • a plurality of components eg modules or programs
  • the integrated component may perform one or more functions of each of the plurality of components identically or similarly to those performed by a corresponding component of the plurality of components prior to the integration. .
  • the operations performed by a module, program, or other component are executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations are executed in a different order; may be omitted, or one or more other actions may be added.
  • FIG. 2 is a block diagram 200 of a power management module 188 and a battery 189 in accordance with various embodiments.
  • the power management module 188 may include a charging circuit 210 , a power regulator 220 , or a power gauge 230 .
  • the charging circuit 210 may charge the battery 189 using power supplied from an external power source for the electronic device 101 .
  • the charging circuit 210 may include a type of external power source (eg, a power adapter, USB, or wireless charging), a size of power supplied from the external power source (eg, about 20 watts or more), or a battery (eg, about 20 watts or more).
  • a charging method eg, normal charging or fast charging
  • the external power source may be connected to the electronic device 101 by wire, for example, through a connection terminal 178 or wirelessly through an antenna module 197 .
  • the power regulator 220 may generate a plurality of powers having different voltages or different current levels by, for example, adjusting a voltage level or a current level of power supplied from an external power source or the battery 189 .
  • the power regulator 220 may adjust the power of the external power supply or battery 189 to a voltage or current level suitable for each of some of the components included in the electronic device 101 .
  • the power regulator 220 may be implemented in the form of a low drop out (LDO) regulator or a switching regulator.
  • the power gauge 230 may measure usage state information (eg, capacity of the battery 189, number of charge/discharge cycles, voltage, or temperature) of the battery 189.
  • the power management module 188 uses, for example, the charging circuit 210, the voltage regulator 220, or the power gauge 230, based at least in part on the measured state of use information to determine the battery 189's Charging state information related to charging (eg, lifetime, overvoltage, undervoltage, overcurrent, overcharge, overdischarge, overheating, short circuit, or swelling) may be determined.
  • the power management module 188 may determine whether the battery 189 is normal or abnormal based at least in part on the determined state of charge information. When the state of the battery 189 is determined to be abnormal, the power management module 188 may adjust charging of the battery 189 (eg, reduce charging current or voltage, or stop charging). According to one embodiment, at least some of the functions of the power management module 188 may be performed by an external control device (eg, the processor 120).
  • the battery 189 may include a battery protection circuit module (PCM) 240 according to one embodiment.
  • the battery protection circuit 240 may perform one or more of various functions (eg, a pre-blocking function) to prevent deterioration or burnout of the battery 189 .
  • the battery protection circuit 240 is, additionally or alternatively, a battery management system (battery management system) capable of performing various functions including cell balancing, measuring the capacity of a battery, measuring the number of charge/discharge times, measuring temperature, or measuring voltage. BMS))).
  • At least a portion of the use state information or the state of charge information of the battery 189 is a corresponding sensor (eg, a temperature sensor) of the sensor module 176, a power gauge 230, or a power management module. It can be measured using (188).
  • the corresponding sensor (eg, temperature sensor) of the sensor module 176 is included as part of the battery protection circuit 240 or disposed near the battery 189 as a separate device. can
  • 3A is a diagram 300 schematically illustrating an operation of charging an electronic device 320 by a power transmission device 310 according to various embodiments.
  • a power transmitter 310 may wirelessly transmit power to charge an electronic device 320 (eg, a power receiver). For example, when the battery (eg, the battery 189 of FIG. 1 ) of the electronic device 320 is discharged or the amount of available power is less than a specified level, the power transmission device 310 wirelessly transmits power to the electronic device ( The battery 189 of 320 may be charged.
  • an electronic device 320 eg, a power receiver
  • the electronic device 320 may include the electronic device 101 shown in FIG. 1 .
  • the electronic device 320 may include at least one of a smart phone, a wearable device (eg, a watch), a tablet, or wireless earphones.
  • the power transmission device 310 may be a device that supplies power wirelessly.
  • a device that wirelessly supplies power may be a device that wirelessly supplies power to the electronic device 320 using a conductive pattern, such as a wireless charging pad.
  • the power transmission device 310 connected to the electronic device 320 through a wireless interface supports a wireless high voltage (HV) device (eg, adaptive fast charge (AFC) or quick charge (QC)). device) may be included.
  • HV wireless high voltage
  • AFC adaptive fast charge
  • QC quick charge
  • the power transmission device 310 detects that the electronic device 320 is positioned (eg, adjacent to or in contact with) the top of the housing 304 while the electronic device 320 is waiting to be charged. can do.
  • the upper portion of the housing 304 of the power transmission device 310 is on a side adjacent to a coil for wireless charging (eg, a power transmission coil (not shown)) or in a direction in which magnetic force of the coil for wireless charging is transmitted. side can mean.
  • the power transmission device 310 periodically or at a specified time, a first ping signal (eg, an analog ping signal, a Q ping signal, or a digital ping signal) for wireless charging It may be transmitted through a coil, and it may be confirmed (or determined) whether the electronic device 320 is adjacent to or in contact with the power transmission device 310 through a first ping signal.
  • the electronic device 320 generates a feedback signal (eg, a response signal, identification information, configuration information, and/or a signal strength packet (SSP) signal) in response to the first ping signal transmitted from the power transmission device 310. may be transmitted to the power transmission device 310.
  • a feedback signal eg, a response signal, identification information, configuration information, and/or a signal strength packet (SSP) signal
  • the Q ping signal is a type of analog ping signal, and detects a change (eg, at least one of current, voltage, or frequency) of a signal applied to a coil of the power transmission device 310 to determine the degree of matching of the resonance point of the coil can be checked.
  • a change eg, at least one of current, voltage, or frequency
  • the power transmission device 310 determines whether the electronic device 320 is disposed on the top of the housing 304 based on the first ping signal, the power transmission device 310 The presence or absence of an object (eg, the electronic device 320 or a metal) disposed on the upper portion of the housing 304 of ) may be confirmed. For example, the power transmission device 310 checks a change in electrical energy (eg, current or voltage) measured when the first ping signal is transmitted, and based on the checked change in electrical energy, the electronic device ( 320), it is possible to check the presence or absence of the arrangement (eg, existence). When the existence of the electronic device 320 is confirmed, the power transmission device 310 may adjust at least some of a plurality of parameters related to the first ping signal.
  • a change in electrical energy eg, current or voltage
  • 3B is a diagram 350 illustrating an operation of detecting an object such as an electronic device 320 by the power transmission device 310 according to various embodiments.
  • the power transmission device 310 may perform a function of wirelessly transmitting power (eg, a Tx function) to an electronic device 320 (eg, a power reception device).
  • a function of wirelessly transmitting power eg, a Tx function
  • an electronic device 320 eg, a power reception device
  • the power transmission device 310 detects and detects the electronic device 320, for example, when the electronic device 320 is disposed on top of a housing (eg, the housing 304 of FIG. 3A). /or authentication, power may be transmitted to the electronic device 320 wirelessly.
  • the power transmission device 310 may perform a ping operation 353, an identification & configuration operation 355, and/or a power transfer operation 357.
  • the power transmission device 310 uses a ping operation 353, an identification & configuration operation 355, and/or a power transfer operation 357 to transmit at least one signal or Data can be sent and received.
  • the power transmission device 310 may transmit a signal (eg, a ping signal) for detecting the electronic device 320 existing within a specified range at specified time intervals using the ping operation 353. .
  • the power transmission device 310 may transmit a first ping signal or a second ping signal to the electronic device 320 .
  • a transmission period of the first ping signal may be shorter than a transmission period of the second ping signal.
  • the first ping signal may have a transmission period of about 0.1 to 10 ms.
  • the second ping signal may have a transmission period of about 65 to 70 ms.
  • the first ping signal may include an analog ping signal or a Q ping signal.
  • the second ping signal may include a digital ping signal.
  • the transmission period of the first ping signal and the transmission period of the second ping signal are exemplary and may be changed according to settings of the power transmission device 310 and/or the user.
  • the power transmission device 310 transmits a feedback signal (eg, a response signal, identification information, configuration information, and/or SSP signal) in response to the first ping signal or the second ping signal to the electronic device 320. , and the presence or absence of the electronic device 320 may be detected.
  • a feedback signal eg, a response signal, identification information, configuration information, and/or SSP signal
  • the power transmission device 310 uses the analog ping signal as the first ping signal to detect a specific object (eg, the electronic device 320 or an object made of metal other than the electronic device 320). Depending on the type and location, for example, by detecting a change in current in a power generation circuit (not shown), it is possible to determine whether a specific object is disposed on the top of the housing 304 .
  • a specific object eg, the electronic device 320 or an object made of metal other than the electronic device 320.
  • the power transmission device 310 uses the Q ping signal, which is the first ping signal, to detect a specific object (eg, the electronic device 320 or an object made of metal other than the electronic device 320). Depending on the type and position, for example, whether a specific object is placed on top of the housing 304 by detecting changes in the attenuation coefficient (eg, Q value) and natural frequency of a power transmission coil (not shown). can be checked.
  • a specific object eg, the electronic device 320 or an object made of metal other than the electronic device 320.
  • the power transmission device 310 sends a specific object (eg, the electronic device 320 or an object made of metal other than the electronic device 320) to the top of the housing 304 through the first ping signal. If it is confirmed that is disposed, the type and/or position of a specific object disposed above the housing 304 may be confirmed using the digital ping signal, which is the second ping signal.
  • a specific object eg, the electronic device 320 or an object made of metal other than the electronic device 320
  • the power transmitter 310 transmits a digital ping signal, which is the second ping signal, to the electronic device 320
  • a voltage higher than a specific value is induced in a rectifier circuit (not shown) of the electronic device 320
  • the induced A signal strength packet (SSP) signal including voltage strength may be transferred to the power transmission device 310 .
  • the power transmission device 310 may check the type of the electronic device 320 disposed above the housing 304 through the transmitted identification information signal.
  • the power transmission device 310 may receive a packet (eg, control error packet, CEP) related to wireless charging power control from the electronic device 320 .
  • a packet eg, control error packet, CEP
  • a power transmission coil (not shown) of the power transmission device 310 may include a plurality of coils, and a packet may be received using at least one of the plurality of coils.
  • the power transmission device 310 may determine the location of the electronic device 320 based on the received packet and select at least one coil for wirelessly transmitting power.
  • the power transmission device 310 may set a plurality of parameters related to transmission of the first ping signal or the second ping signal in the ping operation 353 .
  • the power transmission device 310 may use a power transmission circuit (eg, a power transmission unit (not shown) or power transmission) to transmit the frequency of the first ping signal or the second ping signal and the first ping signal or the second ping signal.
  • a plurality of parameters related to at least one of a voltage applied to a coil (not shown) or a transmission period of the first ping signal or the second ping signal may be set.
  • a plurality of parameters may be provided as default values in the initial setting of the power transmission device 310 .
  • the power transmission device 310 determines whether a specific object (eg, the electronic device 320) exists above the housing 304 of the power transmission device 310. can do.
  • the power transmission device 310 may transmit a ping signal based on a plurality of parameters related to transmission of the first ping signal or the second ping signal during the operation period (or the wireless charging standby state) related to the ping operation 353
  • electrical energy eg, at least one of current and voltage
  • a power transmission circuit eg, a power transmission unit (not shown) or a power transmission coil (not shown)
  • the power transmission device 310 measures in a power transmission circuit (eg, a power transmission unit (not shown) or a power transmission coil (not shown)) in response to transmission of the first ping signal or the second ping signal. At least one of a relationship between the measured voltage and a specified threshold voltage and a relationship between a current measured in a power transmission circuit (e.g., a power transmission unit (not shown) or a power transmission coil (not shown)) and a specified threshold current, and the confirmation result Based on this, it is possible to determine whether an object exists above the power transmission device 310 or not.
  • a power transmission circuit e.g., a power transmission unit (not shown) or a power transmission coil (not shown)
  • the power transmission device 310 measures in a power transmission circuit (eg, a power transmission unit (not shown) or a power transmission coil (not shown)) in response to transmission of the first ping signal or the second ping signal. Based on the change in electrical energy (eg, current and voltage), the state of the object present above the power transmission device 310 (eg, the type of object, the size of the object, or the arrangement state of the object) ) or the state change of the object can be detected.
  • a power transmission circuit eg, a power transmission unit (not shown) or a power transmission coil (not shown)
  • the power transmission device 310 a specific object (eg, the electronic device 320 or an object of other metal components other than the electronic device 320 on the top of the housing 304 of the power transmission device 310 ) is confirmed to be placed, noise caused by the object (e.g., vibration of the object and / or noise in the audible frequency band due to vibration), the degree of heat of the object, or deterioration of the power transmission device 310 caused by the object (eg : In order to suppress heat generation of the power transmission device 310 by induction heating from an object), at least some of a plurality of parameters related to transmission of the first ping signal or the second ping signal may be changed or adjusted.
  • the power transmission device 310 may output a designated notification (eg, light emission, vibration, and/or sound) to provide notification of the existence of a specific object.
  • the power transmission device 310 may receive identification information and configuration information of the electronic device 320 in an authentication and configuration operation 355 .
  • the identification information may include at least one piece of information capable of authenticating the electronic device 320 (eg, a wireless communication ID of the electronic device 320).
  • the power transmission device 310 includes identification information and information stored in a memory (eg, the memory 130 of FIG. 1 ) (eg, a wireless communication ID of the electronic device 320 for which wireless power sharing with the power transmission device 310 is authorized). ) match, the detected electronic device 320 may be determined as a valid device.
  • the configuration information may include various types of information required for the electronic device 320 to wirelessly receive power from the power transmission device 310 .
  • the power transmission device 310 transmits wireless power to the electronic device 320 in a power transmission operation 357 when the electronic device 320 is authenticated or selected based on the identification information and the configuration information. can do.
  • the power transmission device 310 includes at least one control error packet (CEP) signal including notification information on the power (or amount of power) required for charging by the electronic device 320, and
  • the electronic device 320 may receive at least one of received power packet (RPP) signals including size information of power (or amount of power) received by the electronic device 320 .
  • the power transmitter 310 may adjust wireless power transmitted to the electronic device 320 based on at least one of the CEP signal and the RPP signal.
  • the electronic device 320 may transmit at least one CEP signal and RPP signal at a specified period or when a specific event (eg, a state change of the electronic device 320) occurs. At least one CEP signal and one RPP signal may be transmitted in different cycles.
  • the power transmission device 310 when the power transmission device 310 includes a plurality of coils, the power transmission device 310 performs a ping operation 353 through at least two or more of the plurality of coils, An identification & configuration operation 355 and a power transfer operation 357 may be performed.
  • the power transmission device 310 simultaneously performs a ping operation 353 through a plurality of coils, or performs a ping operation 353 on the plurality of coils based on a specified pattern or order. can be performed.
  • the power transmission device 310 when the electronic device 320 is detected through a plurality of coils, the power transmission device 310 performs an identification & configuration operation 355 through the detected coil. , or an identification & configuration operation 355 may be performed through a coil detected above a specified threshold.
  • the power transmission device 310 transmits power to the electronic device 320 through each of the plurality of coils in a power transfer operation 357 and receives feedback from the electronic device 320. can receive
  • the power transmission device 310 transmits power to the electronic device 320 through at least two or more of the plurality of coils in a power transfer operation 357, and Feedback may be received from 320 .
  • FIG. 4 is a block diagram 400 illustrating an electronic device 320 according to various embodiments.
  • an electronic device eg, electronic device 101 of FIG. 1 , electronic device 320 of FIGS. 3A and 3B
  • a communication circuit 410 eg, communication module 190 of FIG. 1
  • memory 420 eg memory 130 of FIG. 1
  • display 430 eg display module 160 of FIG. 1
  • temperature sensor 440 e.g. 1
  • power receiver 450 e.g. 1
  • power transmitter 455 e.g, the processor 120 of FIG. 1
  • communication circuitry 410 may perform wireless communication with a power transmission device (eg, power transmission device 310 of FIGS. 3A and 3B ). there is.
  • the communication circuit 410 may include at least one of a first communication circuit (not shown) and a second communication circuit (not shown).
  • the first communication circuit may communicate with the first communication circuit of the power transmission device 310 using the power receiving coil 451 .
  • the first communication circuit may communicate with the first communication circuit of an external electronic device (eg, a power receiver) using the power transmission coil 457 .
  • the second communication circuit is a power transmission device 310 using at least one of Bluetooth, Bluetooth low energy (BLE), Wi-Fi, and near field communication (NFC) (or an external electronic device (eg, power receiving device)).
  • the memory 420 (eg, the memory 130 of FIG. 1 ) is a program for processing and controlling the processor 460 of the electronic device 320 (eg, the program 140 of FIG. 1 ). , operating system (OS) (eg, operating system 142 of FIG. 1), various applications, and/or functions to store input/output data, and controls overall operation of the electronic device 320. program can be saved.
  • the memory 420 may store various setting information necessary for the electronic device 320 to process functions related to various embodiments of the present disclosure.
  • the memory 420 may include a reference value (eg, a power output amount transmitted by the power transmission device 310 and a power reception amount received by the electronic device 320) for determining whether the wireless charging protection mode is entered.
  • a specified ratio value for comparison with the ratio can be stored.
  • the memory 420 may store a reference value for changing the heating control condition (eg, a designated value for comparison with the charge amount of the battery 453).
  • the memory 420 may store a reference value (eg, a designated temperature value) for entering the heating control mode.
  • the display 430 (eg, the display module 160 of FIG. 1 ) displays images under the control of the processor 460, and includes a liquid crystal display (LCD), a light-emitting diode (light-emitting diode), and the like.
  • LED emitting diode
  • OLED organic light-emitting diode
  • MEMS micro electro mechanical systems
  • the display 430 may display various information related to wireless power reception and/or wireless charging of the electronic device 320 through a user interface under the control of the processor 460 .
  • the user interface is a user interface for the state of charge of the electronic device 320
  • the electronic device 320 is misaligned with the top of the power transmission device 310 (eg, the top of the housing 304 in FIG. 3A). It may include a user interface for the arranged state.
  • the temperature sensor 440 may measure the temperature of the power reception coil 451 and may transmit the measured temperature of the power reception coil 451 to the processor 460 .
  • the power receiver 450 includes a power reception coil 451 wirelessly receiving power from the power transmission device 310 (eg, the power transmission coil) and a battery 453 (eg, the battery of FIG. 1 ). (189)).
  • the power receiver 450 may further include a matching circuit, a rectification circuit for rectifying the received AC power to DC, an adjustment circuit for adjusting the charging voltage, and/or a switching circuit. .
  • the processor 460 may charge the battery 453 using power wirelessly received from the power transmission device 310 through the power reception coil 451 of the power reception unit 450 .
  • the battery 453 may be mounted in a housing (not shown) of the electronic device 320 and may be rechargeable.
  • the battery 453 may include, for example, a lithium-ion battery, a rechargeable battery, and/or a solar battery.
  • the power transmitter 455 may include a power transmission coil 457 that wirelessly transmits power to an external electronic device (eg, a power receiver).
  • an external electronic device eg, a power receiver
  • the power transmitter 455 converts the voltage of power input from an external power source (eg, travel adapter, TA), and generates power necessary for power transmission from the converted voltage. and/or a matching circuit that improves efficiency between the power transmission coil 457 and the power reception coil of an external electronic device (eg, a power reception device).
  • the power receiver 450 and the power transmitter 455 may be formed as a single module.
  • processor 460 may include, for example, a micro controller unit (MCU), an operating system (OS) or an embedded software program. It is possible to control a number of hardware components connected to the processor 460 by driving.
  • the processor 460 may control a number of hardware components according to, for example, instructions stored in the memory 420 (eg, the program 140 of FIG. 1 ).
  • the processor 460 may check whether the wireless charging protection mode is entered based on the electronic device 320 being mounted on top of the power transmission device 310 .
  • the wireless charging protection mode blocks the electronic device 320 and the power transmission device 310 from being overheated by the metal foreign object when a metal foreign object is present on the top of the power transmission device 310. It may be a mode performed to do this.
  • the power transmission device 310 determines the electronic device 320 based on whether the ratio of the power output amount transmitted by the power transmission device 310 and the power reception amount received by the electronic device 320 exceeds a specified ratio value. It is possible to determine whether or not to enter the wireless charging protection mode, and a signal for this may be transmitted to the electronic device 320.
  • the processor 460 may or may not enter the wireless charging protection mode based on the signal received from the power transmission device 310 whether to enter the wireless charging protection mode.
  • the processor 460 may wirelessly receive power in the first range from the power transmission device 310 through the power receiver 450.
  • the processor 460 charges the battery 453 using power in the first range, and the charge amount of the battery 453 (eg, the capacity of the battery 453 (eg, state of charge (SOC))) )))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))can confirm
  • the heating control mode may refer to a mode in which the battery 453 is charged with power lower than a specified power (eg, power within a power range lower than a specified range). For example, when the temperature of the power reception coil 451 is set to a first temperature as a heating control condition and it is confirmed that the charge amount of the battery 453 checked for a designated time is less than a designated value, the processor 460 determines the heating control condition. The first temperature may be changed to a second temperature lower than the first temperature.
  • a specified power eg, power within a power range lower than a specified range
  • the processor 460 may check whether the temperature of the power reception coil 451 measured using the temperature sensor 440 reaches the second temperature corresponding to the changed heating control condition. When it is confirmed that the temperature of the power reception coil 451 has reached the second temperature corresponding to the changed heating control condition, the processor 460 may enter a heating control mode. For example, the electronic device 320 may transmit a signal requesting power in the second range lower than the power in the first range to the power transmission device 310 . The processor 460 may charge the battery 453 using power in the second range wirelessly received from the power transmitter 310 through the power receiver 450 .
  • An electronic device a power receiving unit 450 including a power receiving coil 451, a battery 453, and operably with the power receiving unit 450 and the battery 453. and a connected processor 460, wherein the processor 460 checks whether the wireless charging protection mode has entered, and if it is determined that the wireless charging protection mode has not entered, the power from the power transmission device 310 Wirelessly receives power in a first range through the receiver 450, charges the battery 453 using the power in the first range, checks the charge amount of the battery 453 charged for a specified time, , and when it is confirmed that the amount of charge of the battery 453 is less than a specified value, it is determined that a metal foreign object is present, and the heating control condition can be set to be changed.
  • the heating control condition may be related to the temperature of the power receiving coil 451 .
  • the processor 460 determines that the checked amount of charge of the battery 453 is less than the specified value when the temperature of the power reception coil 451 is set to a first temperature as the heat control condition. If confirmed, the heating control condition may be set to change from the first temperature to a second temperature lower than the first temperature.
  • the electronic device 320 may further include a temperature sensor 440 disposed adjacent to the power receiving coil 451 .
  • the processor 460 may, when the temperature of the power receiving coil 451 measured by the temperature sensor 440 exceeds the second temperature, lower than the first range of power A signal requesting power in a second range is transmitted to the power transmitter 310, and the power in the second range wirelessly received from the power transmitter 310 through the power receiver 450 is used. to charge the battery 453.
  • the processor 460 determines the temperature of the power receiving coil 451 measured by the temperature sensor 440 while charging the battery 453 using the power in the second range. When reaches a third temperature lower than the second temperature, a signal requesting power in a first range higher than the power in the second range is transmitted to the power transmission device 310, and the power transmission device ( 310) to charge the battery 453 using the power in the first range wirelessly received through the power receiver 450.
  • the processor 460 based on the output amount of power transmitted by the power transmission device 310 and the received amount of power received from the power transmission device 310, the power transmission device ( 310) may be set to receive a signal for entering the wireless charging protection mode determined by the power transmission device 310.
  • the processor 460 based on the power transmission device 310 confirming that the ratio of the amount of power reception to the amount of power output is less than a specified ratio value, the power transmission device ( 310) to receive a signal for entering the wireless charging protection mode, and to block charging of the battery 453 by entering the wireless charging protection mode.
  • the metallic foreign material may be present on top of the power transmission device 310 .
  • the processor 460 when the processor 460 does not receive a signal for entering the wireless charging protection mode from the power transmitter 310, the power receiver from the power transmitter 310 ( 450), it may be set to wirelessly receive power in the first range.
  • the power reception amount for the power output amount by the power transmission device 310 may include a case in which a signal for entering the wireless charging protection mode is not received from the power transmission device 310 based on the confirmation of the specified ratio value or more.
  • the metallic foreign material when the power reception amount to the power output amount is greater than or equal to the specified ratio value, the metallic foreign material does not exist on the power transmission device 310 .
  • the power reception amount for the power output amount by the power transmission device 310 Based on the confirmation that the ratio is less than the specified ratio value, a state in which the metallic foreign material exists on the top of the power transmission device 310, but as the presence of the metallic foreign material is not recognized, the power transmission device 310 may include a case where a signal for entering the wireless charging protection mode is not received.
  • 5 is a flowchart 500 for explaining a method of controlling wireless charging of an electronic device 320 according to various embodiments.
  • the electronic device may check whether the wireless charging protection mode has been entered in operation 510 .
  • the wireless charging protection mode may be a mode entered when a metal foreign object is present on top of the power transmission device (eg, the power transmission device 310 of FIGS. 3A and 3B ).
  • the electronic device 320 may transmit and receive information related to power with the power transmission device 310 .
  • the power transmission device 310 may receive at least one control error packet (CEP) signal including notification information on power (or amount of power) required for charging by the electronic device 320, and at least Power determined based on one CEP signal may be transmitted to the electronic device 320 .
  • CEP control error packet
  • the power transmission device 310 may receive a received power packet (RPP) signal including size information of power (or amount of power) received by the electronic device 320, and determine the Power may be transmitted to the electronic device 320 .
  • RPP received power packet
  • the power transmission device 310 transmits power magnitude information (eg, power output amount) to the electronic device 320 through a power transmission coil (not shown) and RPP received from the electronic device 320. Information on the amount of power received by the electronic device 320 included in the signal (eg, the amount of power received) may be compared. The power transmission device 310 may determine whether the electronic device 320 enters the wireless charging protection mode based on whether the ratio of the power output amount to the power reception amount exceeds a specified ratio value.
  • power magnitude information eg, power output amount
  • RPP received from the electronic device 320.
  • Information on the amount of power received by the electronic device 320 included in the signal eg, the amount of power received
  • the power transmission device 310 may determine whether the electronic device 320 enters the wireless charging protection mode based on whether the ratio of the power output amount to the power reception amount exceeds a specified ratio value.
  • the power transmission device 310 sends a signal to the electronic device 320 so that the electronic device 320 enters the wireless charging protection mode.
  • the fact that the power reception amount to the power output amount is less than a specified ratio value may mean a state in which a metallic foreign material is present on the power transmission device 310 .
  • the power transmission device 310 sends a signal to the electronic device 320 to allow the electronic device 320 to enter the wireless charging protection mode. may not be sent.
  • the power reception amount to the power output amount is equal to or greater than a specified ratio value, it may mean a state in which no metallic foreign material is present on the power transmission device 310 .
  • the power transmission device 310 determines that a metallic foreign material exists on the top of the power transmission device 310, and the electronic device 320 may transmit a signal to the electronic device 320 to enter the wireless charging protection mode.
  • the electronic device 320 may enter the wireless charging protection mode based on the signal received from the power transmission device 310 .
  • the electronic device 320 may perform an operation of blocking charging of the battery 453 .
  • the electronic device 320 transmits a power receiver (eg, the power receiver 450 of FIG. 4) from the power transmitter 310. Through this, it is possible to wirelessly receive power in the first range.
  • a power receiver eg, the power receiver 450 of FIG. 4
  • the power transmission device 310 sends a signal to the electronic device 320 to allow the electronic device 320 to enter the wireless charging protection mode. may not be sent. Accordingly, the electronic device 320 may not enter the wireless charging protection mode.
  • the power transmission device 310 when it is confirmed that the amount of power received relative to the amount of power output is less than a specified ratio value, a state in which a metallic foreign object is present on the top of the power transmission device 310, but the power transmission device 310 is the electronic device 320 A signal for entering the wireless charging protection mode may not be transmitted to the electronic device 320 .
  • the power transmission device 310 may be a device in which a foreign object detection (FOD) function is not implemented.
  • FOD foreign object detection
  • the power transmission device 310 since the power transmission device 310 is a device in which the FOD function is not implemented, the power transmission device does not recognize the presence of a metallic foreign object despite the existence of a metallic foreign object on the top of the power transmission device 310.
  • the electronic device 320 may not transmit a signal for allowing the electronic device 320 to enter the wireless charging protection mode. In this case, the electronic device 320 may charge the battery 453 using power within the first range received from the power transmission device 310 without entering the wireless charging protection mode.
  • thermal deformation may occur in the back cover of the electronic device 320 and/or the top of the power transmission device 310, which is in contact with the metallic foreign material, due to the heat generated by the metallic foreign material present on the top of the power transmission device 310.
  • the electronic device 320 performs the power transmission device (through operations 530 and 540 described below). 310), it can be confirmed whether a metallic foreign material is present on the upper part.
  • the electronic device 320 may charge the battery 453 using power within the first range and check the amount of charge of the battery 453 charged for a specified time.
  • the electronic device 320 may check the amount of charge of the battery 453 charged for a specified time from the time of charging the battery 453 using the power of the first range received from the power transmission device 310.
  • the amount of charge of the battery 453 may mean the capacity (eg, state of charge (SOC)) of the battery 453 .
  • the electronic device 320 determines that a metal foreign object exists, and determines the heat generation control condition. can be changed
  • a designated value which is a comparison target of the charge amount of the battery 453 for determining the presence or absence of a metallic foreign object, is in a state where the electronic device 320 is disarranged on top of the power transmission device 310 It may be set smaller than the amount of charge of the battery 453 charged for a specified time. However, it is not limited thereto. In various embodiments, the specified value is set to be smaller than the charge amount charged for a specified time in a state where the electronic device 320 is disarranged on top of the power transmission device 310, and the charge amount of the battery 453 is specified.
  • the heating control condition may be related to the temperature of the power receiving coil 451 .
  • the electronic device 320 may operate in a heating control mode.
  • the heating control mode may refer to a mode in which the battery 453 is charged with power lower than a specified power (eg, power within a specified range).
  • the designated temperature may be a temperature that may affect the charging operation due to over temperature of the battery 453 during the wireless charging operation.
  • the designated temperature may be about 41 degrees. However, it is not limited thereto.
  • the heating control condition when the temperature of the power reception coil 451 is set to a first temperature (eg, a specified temperature) as a heating control condition, and when it is confirmed that the charge amount of the battery 453 is less than a specified value, the electronic device In operation 320, the heating control condition may be changed from the first temperature to a second temperature lower than the first temperature.
  • a first temperature eg, a specified temperature
  • the electronic device 320 may include the power receiving coil 451 or a temperature sensor disposed adjacent to the power receiving coil 451 (eg, the temperature sensor 440 of FIG. 4 ). In one example, the electronic device 320 may measure the temperature of the power reception coil 451 using the temperature sensor 440 at designated time intervals. The electronic device 320 may check whether the measured temperature of the power reception coil 451 reaches the second temperature corresponding to the changed heating control condition. When it is confirmed that the temperature of the power reception coil 451 has reached the second temperature corresponding to the changed heating control condition, the electronic device 320 may enter a heating control mode. For example, the electronic device 320 may transmit a control error packet (CEP) signal including information requesting power lower than the power in the first range (eg, power in the second range) to the power transmission device 310. there is.
  • CEP control error packet
  • the power transmission device 310 is based on receiving a CEP signal including information requesting power lower than the power in the first range (eg, power in the second range) from the electronic device 320 Accordingly, power lower than the power in the first range (eg, power in the second range) may be wirelessly transmitted to the electronic device 320 .
  • the electronic device 320 charges the battery 453 using power (eg, power in the second range) lower than power in the first range wirelessly received from the power transmitter 310 through the power receiver 450. can do.
  • FIG. 6 is a flowchart 600 for explaining a method of controlling wireless charging of an electronic device 320 according to various embodiments.
  • FIG. 6 is a more detailed view of the operations of FIG. 5 described above.
  • the electronic device may check whether the wireless charging protection mode has been entered in operation 610 .
  • the wireless charging protection mode blocks the electronic device 320 and the power transmission device 310 from being overheated by the metal foreign object when a metal foreign object is present on the top of the power transmission device 310. It may be a mode performed to do this.
  • the power transmission device 310 includes power magnitude information (eg, power output amount) transmitted to the electronic device 320 through a power transmission coil (not shown) and the RPP signal received from the electronic device 320.
  • the electronic device 320 may compare received power size information (eg, power received amount).
  • the power transmission device 310 may determine whether the electronic device 320 enters the wireless charging protection mode based on whether the ratio of the amount of power received to the amount of power output exceeds a specified ratio value.
  • the electronic device 320 may block charging of the battery 453 in operation 615.
  • the power transmission device 310 confirms that a metallic foreign object exists on the power transmission device 310, and the electronic device 320 wirelessly A signal for entering the charging protection mode may be transmitted to the electronic device 320 .
  • the electronic device 320 may enter the wireless charging protection mode based on the signal received from the power transmission device 310 .
  • the battery 453 is charged.
  • action can be performed.
  • the power transmission device 310 may transmit and receive a control error packet (CEP) and/or received power packet (RPP) signal with the electronic device 320 at a specified time interval, and receive power for the amount of power output based thereon. You can check the ratio of the amount.
  • CEP control error packet
  • RPP received power packet
  • the power transmission device 310 may transmit a signal for releasing the wireless charging protection mode to the electronic device 320 .
  • the electronic device 320 may perform an operation of charging the battery 453 based on the signal for releasing the wireless charging protection mode received from the power transmission device 310 .
  • the electronic device 320 transmits power from the power transmitter 310 to the power receiver (eg, in FIG. 4 ). Power in the first range may be wirelessly received through the power receiver 450 .
  • the power transmission device 310 confirms that there is no metallic foreign material on the top of the power transmission device 310, and the electronic device 320 operates wirelessly.
  • a signal for entering the charging protection mode may not be transmitted to the electronic device 320 .
  • the electronic device 320 does not receive a signal related to the wireless charging protection mode from the power transmission device 310, it may not enter the wireless charging protection mode.
  • a state in which a metallic foreign object is present on the top of the power transmission device 310, but the power transmission device 310 is the electronic device 320 A signal for entering the wireless charging protection mode may not be transmitted to the electronic device 320 .
  • the power transmission device 310 is a device in which a foreign object detection (FOD) function is not implemented
  • FOD foreign object detection
  • a state in which a metallic foreign object is present on top of the power transmission device 310, but does not recognize the presence of a metallic foreign object, and electronic A signal for causing the device 320 to enter the wireless charging protection mode may not be transmitted to the electronic device 320 .
  • the electronic device 320 may not enter the wireless charging protection mode as it does not receive a signal related to the wireless charging protection mode from the power transmission device 310 .
  • a state in which a metallic foreign material exists on the top of the power transmission device 310 does not recognize it and transmits a signal to the electronic device 320 to allow the electronic device 320 to enter the wireless charging protection mode. If not, thermal deformation may occur on the rear cover of the electronic device 320 and/or the top of the power transmission device 310 that is in contact with the metallic foreign material due to heat from the metallic foreign material. In order to prevent this, the electronic device 320 may check whether a metallic foreign material exists on the upper part of the power transmission device 310 through operations 630 to 640 described later.
  • the electronic device 320 may charge the battery 453 using power within the first range.
  • the electronic device 320 may check the amount of charge (eg, capacity (eg, state of charge (SOC)) of the battery 453) of the battery 453 charged for a specified time. For example, the electronic device 320 may check the amount of charge of the battery 453 charged for a specified time from the time of charging the battery 453 using the power within the first range.
  • the electronic device 320 may check whether the checked amount of charge of the battery 453 is less than a specified value.
  • the electronic device 320 determines that a metal foreign object exists and receives power in operation 640 Heating control conditions related to the temperature of a coil (eg, the power receiving coil 451 of FIG. 4 ) may be changed.
  • the heating control condition is a condition for entering the heating control mode and may be related to the temperature of the power receiving coil 451 .
  • the heating control mode is a mode for charging the battery 453 with power lower than a specified power (eg, power within a specified range), when the temperature of the power receiving coil 451 exceeds the specified temperature. , can be entered.
  • the designated temperature may be a temperature that may affect the charging operation due to overheating of the battery 453 during the wireless charging operation.
  • a first temperature eg, a specified temperature
  • heat is generated. It may be an operation of changing the control condition from the first temperature to a second temperature lower than the first temperature.
  • the electronic device 320 branches to operation 620 and transmits the first signal received from the power transmission device 310.
  • An operation of charging the battery 453 may be performed using power within the range.
  • the electronic device 320 may check the temperature of the power reception coil 451 in operation 645 .
  • the electronic device 320 may include a temperature sensor (eg, the temperature sensor 440 of FIG. 4 ) disposed adjacent to the power receiving coil 451 .
  • the electronic device 320 may measure the temperature of the power reception coil 451 using the temperature sensor 440 at designated time intervals.
  • the electronic device 320 may check whether the temperature of the power receiving coil 451 exceeds a temperature (eg, a second temperature) set as the changed heating control condition. When it is confirmed that the temperature of the power receiving coil 451 is higher than the temperature (eg, the second temperature) set as the changed heating control condition (eg, YES in operation 650), the electronic device 320 in operation 655, A signal requesting power in the second range lower than the power in the first range may be transmitted to the power transmission device 310 . For example, the electronic device 320 may transmit a CEP signal including information requesting power in a second range lower than power in the first range to the power transmission device 310 .
  • a temperature eg, a second temperature
  • the power transmission device 310 wirelessly transmits power in the second range to the electronic device 320 based on receiving a CEP signal including information requesting power in the second range from the electronic device 320.
  • the electronic device 320 wirelessly receives power in the second range from the power transmitter 310 through the power receiver 450, and in operation 665, the electronic device 320 wirelessly receives the power in the second range and uses the battery 453. ) can be charged.
  • the electronic device 320 may branch to operation 620 and perform an operation of charging the battery 453 using the power of the first range received from the power transmission device 310 .
  • the electronic device 320 charges the battery 453 using power in the second range of 665 operations, and uses the temperature sensor 440 to charge the power receiving coil at designated time intervals.
  • the temperature of (451) can be measured.
  • the electronic device 320 sets the power in the second range.
  • a signal requesting a higher power in the first range may be transmitted to the power transmission device 310 .
  • the electronic device 320 may charge the battery 453 using power within a first range wirelessly received from the power transmitter 310 through the power receiver 451 .
  • a method for controlling wireless charging of the electronic device 320 includes an operation of checking whether the wireless charging protection mode has entered, and when it is determined that the wireless charging protection mode has not entered, the power transmission device ( 310) wirelessly receiving power in a first range through the power receiver 450 of the electronic device 320, charging the battery 453 using the power in the first range, and charging for a specified time operation of checking the amount of charge of the battery 453, and if it is confirmed that the amount of charge of the battery 453 is less than a specified value, confirming that a metal foreign object exists and changing a heating control condition Actions may be included.
  • the heating control condition may be related to the temperature of the power receiving coil 451 .
  • the operation of changing the heating control condition may be performed when the temperature of the power reception coil 451 is set to a first temperature as the heating control condition, and the checked amount of charge of the battery 453 is specified as the specified amount. If it is determined that the heat generation control condition is less than the value, an operation of changing the heat generation control condition from the first temperature to a second temperature lower than the first temperature may be included.
  • a method for controlling wireless charging of an electronic device 320 includes an operation of measuring the temperature of the power receiving coil 451 using the temperature sensor 440 of the electronic device 320, the When the measured temperature of the power receiving coil 451 exceeds the second temperature, transmitting a signal requesting power in a second range lower than the power in the first range to the power transmission device 310 , and charging the battery 453 using the power in the second range wirelessly received from the power transmitter 310 through the power receiver 450.
  • the power measured through the temperature sensor 440 while charging the battery 453 using the power in the second range When the temperature of the receiving coil 451 reaches a third temperature lower than the second temperature, transmitting a signal requesting power in a first range higher than the power in the second range to the power transmission device 310 An operation of charging the battery 453 using the power in the first range wirelessly received from the power transmission device 310 through the power receiver 450 may be further included.
  • the operation of checking whether the wireless charging protection mode is entered is based on the amount of output power transmitted by the power transmission device 310 and the amount of power received from the power transmission device 310. and receiving, from the power transmission device 310, a signal for entering the wireless charging protection mode determined by the power transmission device 310.
  • a method for controlling wireless charging of an electronic device 320 is based on the confirmation that the ratio of the power output amount and the power reception amount is less than a specified ratio value by the power transmission device 310 , Receiving a signal from the power transmission device 310 to enter the wireless charging protection mode, and entering the wireless charging protection mode to block charging of the battery 453. there is.
  • the metallic foreign material may be present on the power transmission device 310 .
  • the operation of wirelessly receiving power in the first range is performed when a signal for entering the wireless charging protection mode is not received from the power transmission device 310, the power transmission device ( 310) through the power receiver 450 to wirelessly receive the power in the first range.
  • the amount of power received for the amount of power output by the power transmission device 310 may include a case in which a signal for entering the wireless charging protection mode is not received from the power transmission device 310 based on the confirmation of the specified ratio value or more.
  • the metallic foreign material when the power reception amount to the power output amount is greater than or equal to the specified ratio value, the metallic foreign material does not exist on the power transmission device 310 .
  • the power transmission device 310 when a signal for entering the wireless charging protection mode is not received from the power transmission device 310, the amount of power received for the amount of power output by the power transmission device 310 Based on the confirmation of less than the specified ratio value, the presence of the metallic foreign material on the top of the power transmission device 310, but as the presence of the metallic foreign material is not recognized, the power transmission device 310 It may include a case where a signal for entering the wireless charging protection mode is not received.
  • FIGS. 7A and 7B are views 700 for explaining a method of determining whether a metallic foreign material is present on the top of the power transmission device 310 based on the amount of charge of the battery 453, according to various embodiments. 750).
  • a metal foreign object exists on top of the power transmission device (eg, the power transmission device 310 of FIGS. 3A and 3B ), but the power transmission device 310 recognizes it. Otherwise, a signal for causing the electronic device (eg, the electronic device 320 of FIGS. 3A and 3B ) to enter the wireless charging protection mode may not be transmitted to the electronic device 320 . In this case, thermal deformation may occur on the rear cover of the electronic device 320 and/or the upper portion of the power transmission device 310 that are in contact with the metallic foreign material due to heat generated by the metallic foreign material. In order to prevent this, the electronic device 320 may check whether a metallic foreign material exists on the top of the transmission device 310 based on the amount of charge of the battery 453 according to FIGS. 7A and 7B .
  • FIG. 7A is a diagram 700 for explaining a case in which a charge amount of a battery (eg, the battery 453 of FIG. 4 ) exceeds a specified value
  • FIG. 7B is a charge amount of the battery 453
  • It is a drawing 750 for explaining the case where is equal to or less than the specified value.
  • the x-axis may mean time 705 and the y-axis may mean the amount of charge of the battery 453, for example, the SOC level 710.
  • the electronic device 320 without entering the wireless charging protection mode, from the power transmission device 310 through the power receiver (eg, the power receiver 450 of FIG. 4) in the first range Power can be received wirelessly.
  • the power receiver eg, the power receiver 450 of FIG. 4
  • the electronic device 320 may check the amount of charge of the battery 453 charged for a specified time from the time of charging the battery 453 using power within the first range. For example, the electronic device 320 may check the amount of charge of the battery 453 from the time point 715 when the battery 453 is charged using power within the first range to the time point 720 when 10 minutes have elapsed. As shown in FIG. 7A , the SOC level 710 at the time 715 when the battery 453 is charged using the power in the first range is about 3%, and the SOC level at the time 720 when 10 minutes have elapsed. (710) may be about 12%.
  • the charge amount of the battery 453 charged for 10 minutes is about 9%, and the electronic device 320 sets the charge amount (for example, about 9%) of the battery 453 for 10 minutes to a specified value (for example, about 4.5%). can be found to exceed Based on the fact that the charge amount (eg, about 9%) of the battery 453 for 10 minutes exceeds a specified value (eg, about 4.5%), the electronic device 320 uses power within the first range. Thus, the battery 453 can be charged.
  • the electronic device 320 determines that the charge amount (eg, about 9%) of the battery 453 for 10 minutes exceeds a specified value (eg, about 4.5%). It is determined that no metallic foreign material is present on the top of the , and the battery 453 may be charged using power within the first range.
  • a specified value eg, about 4.5%
  • the x-axis may mean time 705
  • the y-axis may mean the amount of charge of the battery 453 , for example, the SOC level 710 .
  • the electronic device 320 may wirelessly receive power in the first range from the power transmitter 310 through the power receiver 450 without entering the wireless charging protection mode.
  • the electronic device 320 may check the amount of charge of the battery 453 charged for a specified time from the time of charging the battery 453 using power within the first range. For example, the electronic device 320 may check the amount of charge of the battery 453 from the time 755 when the battery 453 is charged using power within the first range to the time 760 when 10 minutes have elapsed. As shown in FIG. 7B , the SOC level 710 at the time point 755 when the battery 453 is charged using the power in the first range is about 3%, and the SOC level at the time point 760 when 10 minutes have elapsed. (710) may be about 6%.
  • the charge amount of the battery 453 charged for 10 minutes is about 3%, and the electronic device 320 sets the charge amount (for example, about 3%) of the battery 453 for 10 minutes to a specified value (for example, about 4.5%). It can be confirmed that the following Based on the fact that the charge amount (eg, about 3%) of the battery 453 for 10 minutes is less than or equal to a specified value (eg, about 4.5%), the electronic device 320 operates a power receiving coil (eg, in FIG. 4 ). Heating control conditions related to the temperature of the power receiving coil 451 may be changed.
  • the electronic device 320 determines that the charge amount (eg, about 3%) of the battery 453 for 10 minutes is less than or equal to a specified value (eg, about 4.5%) at the top of the power transmission device 310. It is determined that a metallic foreign material is present in , and a heating control condition related to the temperature of the power receiving coil 451 may be changed.
  • the charge amount eg, about 3%) of the battery 453 for 10 minutes is less than or equal to a specified value (eg, about 4.5%) at the top of the power transmission device 310. It is determined that a metallic foreign material is present in , and a heating control condition related to the temperature of the power receiving coil 451 may be changed.
  • FIG. 8 is a diagram of a battery 453 after changing a heating control condition related to the temperature of a power receiving coil 451 based on the presence of a metallic foreign material on the top of the power transmission device 310 according to various embodiments. It is a drawing 800 for explaining a method of charging.
  • a graph ⁇ 820> of FIG. 8 is a graph showing a temperature 810 of a battery (eg, the battery 453 of FIG. 4) over time 805, and a graph ⁇ 825> shows a time 805 ) is a graph showing the temperature 810 of a position corresponding to the position of a metallic foreign object in the battery 453 according to ), and the graph ⁇ 830> is a power receiving coil over time 805 (e.g., the power receiving coil of FIG. 4 ( 451)) is a graph showing the temperature 810 of a position in contact with a metallic foreign material, and a graph ⁇ 835> is a back surface of an electronic device (eg, the electronic device 320 of FIGS.
  • 310) may be a graph showing a temperature 810 at a position where a metallic foreign material exists.
  • the graph ⁇ 845> of FIG. 8 may be a graph showing the temperature 810 of the power receiving coil 451 over time 805, and the graph ⁇ 850> shows the amount of charge of the battery 453 over time 805, for example.
  • the electronic device 320 may check whether the amount of charge 815 of the battery 453 charged for a specified time using power within the first range is less than a specified value. For example, the electronic device 320 charges the battery 453 using power within a first range based on a graph 850 representing the amount of charge of the battery 453 over time 805, for example, the SOC 815. It can be seen that the charge amount of the battery 453 charged for a specified time (eg, 10 minutes 865) from the time point 860 is less than a value designated as about 3%, for example, about 4.5%.
  • a specified time eg, 10 minutes 865
  • the electronic device 320 Based on the fact that the charge amount (eg, about 3%) of the charged battery 453 is less than a specified value (eg, about 4.5%), the electronic device 320 has a metallic foreign material on top of the power transmission device 310. It is determined that a (metal foreign object) exists, and a heating control condition related to the temperature of the power receiving coil 451 may be changed. For example, when the temperature of the power receiving coil 451 is set to a first temperature (eg, a designated temperature) as a heating control condition, when the electronic device 320 determines that the amount of charge of the battery 453 is less than a designated value, the heating control condition may be changed from the first temperature to a second temperature lower than the first temperature.
  • a first temperature eg, a designated temperature
  • the first temperature is about 41 degrees and the second temperature is about 38 degrees.
  • the electronic device 320 uses a temperature sensor disposed adjacent to the power reception coil 451 (eg, the temperature sensor 440 of FIG. temperature can be measured
  • the electronic device 320 controls heat generation in which the temperature of the power reception coil 451 is changed based on a graph representing the temperature 810 of the power reception coil 451 over time 805. It may be checked whether the temperature set as a condition exceeds, for example, about 38 degrees (eg, the second temperature). When it is confirmed that the temperature 870 of the power receiving coil 451 exceeds the temperature set as the changed heating control condition, for example, about 38 degrees (eg, the second temperature), the electronic device 320 is configured to operate the electronic device 320 higher than the first range of power. A signal requesting power in the second low range may be transmitted to the power transmission device 310 . The electronic device 320 may wirelessly receive power in the second range from the power transmitter 310 through the power receiver 450 and charge the battery 453 using the power in the second range.
  • the temperature set as a condition exceeds, for example, about 38 degrees (eg, the second temperature).
  • the electronic device 320 is configured to operate the electronic device 320 higher than the first range of power.
  • the electronic device 320 charges the battery 453 using the power in the second range, and uses the temperature sensor 440 to charge the battery 451 at designated time intervals. Temperatur can be measured. A temperature (eg, third temperature (eg, about 35 degrees)) lower than the temperature (eg, second temperature (eg, about 38 degrees)) set as the heating control condition in which the measured temperature of the power receiving coil 451 is changed In this case, the electronic device 320 may transmit a signal requesting power in the first range higher than the power in the second range to the power transmission device 310 . The electronic device 320 may charge the battery 453 using power within a first range wirelessly received from the power transmitter 310 through the power receiver 450 .
  • third temperature eg, about 35 degrees
  • second temperature eg, about 38 degrees
  • the back cover of the electronic device 320 may be formed of glass stick, and the thermal deformation start temperature of the glass stick may be, for example, about 80 degrees.
  • the temperature 810 of the power receiving coil 451 based on the temperature 810 of the power receiving coil 451 reaching (870) a temperature set as the changed heating control condition, for example, about 38 degrees (eg, the second temperature), the first range As the battery 453 is charged using the power in the second range lower than the power of , the temperature 810 of the power receiving coil 451 is changed to the temperature set as the heating control condition, for example, about 38 degrees (eg, the second temperature) at the time of reaching 870 and the time thereafter, temperature according to ⁇ 820>, ⁇ 825>, ⁇ 830>, ⁇ 835>, ⁇ 840>
  • the temperature 810, the temperature of the position where the metallic foreign material is present on the top of the power transmission device 310 may be lower than

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Cardiology (AREA)
  • General Health & Medical Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

Selon divers modes de réalisation de la présente divulgation, un appareil électronique comprend une unité de réception de puissance comprenant une bobine de réception de puissance ; une batterie ; et au moins un processeur connecté fonctionnellement à l'unité de réception de puissance et à la batterie, ledit processeur pouvant être configuré pour : identifier si un mode de protection de charge sans fil est activé ; lorsqu'il est déterminé que le mode de protection de charge sans fil n'est pas activé, recevoir sans fil une puissance de première portée en provenance d'un appareil de transfert sans fil par l'intermédiaire de l'unité de réception de puissance ; charger la batterie à l'aide de la puissance de première portée ; identifier une quantité de charge de la batterie chargée pour une période spécifiée ; lorsqu'il est identifié que la quantité de charge de la batterie est inférieure à une valeur spécifiée, identifier la présence d'un objet étranger métallique ; et modifier une condition de commande de chauffage. Divers modes de réalisation autres que les divers modes de réalisation divulgués dans le présent document peuvent être possibles.
PCT/KR2022/012518 2021-08-30 2022-08-22 Appareil électronique et procédé de commande de charge sans fil l'utilisant WO2023033430A1 (fr)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140113147A (ko) * 2013-03-15 2014-09-24 주식회사 한림포스텍 무선 전력 전송 시스템에서 이물질 감지 장치 및 방법
KR20170021011A (ko) * 2015-08-17 2017-02-27 엘지이노텍 주식회사 무선 전력 송신기 및 이와 연결되는 차량 제어 유닛
KR20200041446A (ko) * 2018-10-12 2020-04-22 삼성전자주식회사 무선 전력 전송을 위한 방법 및 그 전자 장치
KR20200100976A (ko) * 2019-02-19 2020-08-27 삼성전자주식회사 무선 전력 충전 방법 및 이를 사용하는 전자 장치
WO2021081382A1 (fr) * 2019-10-25 2021-04-29 Witricity Corporation Circuit de détection d'objet et détermination de position de véhicule

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20140113147A (ko) * 2013-03-15 2014-09-24 주식회사 한림포스텍 무선 전력 전송 시스템에서 이물질 감지 장치 및 방법
KR20170021011A (ko) * 2015-08-17 2017-02-27 엘지이노텍 주식회사 무선 전력 송신기 및 이와 연결되는 차량 제어 유닛
KR20200041446A (ko) * 2018-10-12 2020-04-22 삼성전자주식회사 무선 전력 전송을 위한 방법 및 그 전자 장치
KR20200100976A (ko) * 2019-02-19 2020-08-27 삼성전자주식회사 무선 전력 충전 방법 및 이를 사용하는 전자 장치
WO2021081382A1 (fr) * 2019-10-25 2021-04-29 Witricity Corporation Circuit de détection d'objet et détermination de position de véhicule

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