WO2021162343A1 - Procédé de charge sans fil, et unité électronique prenant en charge ce procédé - Google Patents

Procédé de charge sans fil, et unité électronique prenant en charge ce procédé Download PDF

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Publication number
WO2021162343A1
WO2021162343A1 PCT/KR2021/001487 KR2021001487W WO2021162343A1 WO 2021162343 A1 WO2021162343 A1 WO 2021162343A1 KR 2021001487 W KR2021001487 W KR 2021001487W WO 2021162343 A1 WO2021162343 A1 WO 2021162343A1
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WIPO (PCT)
Prior art keywords
voltage
power
ping signal
period
parameters
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PCT/KR2021/001487
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English (en)
Korean (ko)
Inventor
김동조
정형구
하민철
Original Assignee
삼성전자 주식회사
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Publication of WO2021162343A1 publication Critical patent/WO2021162343A1/fr

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    • 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
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
    • G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
    • 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
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment

Definitions

  • Various embodiments disclosed in this document relate to a wireless charging method and an electronic device supporting the same.
  • the electronic device may support a wireless charging function of charging a battery of the external electronic device by wirelessly transmitting power to the external electronic device, or charging a mounted battery by wirelessly receiving power from the external electronic device.
  • An electronic device that operates a wireless power transmission function performs a comparison between information on transmission power and a received power packet (RPP) indicating a received power level of the external electronic device, the electronic device and the external electronic device It is possible to detect objects that exist between the devices (eg, metal foreign objects). In response to the object detection, the electronic device may perform a foreign object detection (FOD) function that stops power transmission to the external electronic device.
  • a wireless power transmission function eg, a Tx function
  • RPP received power packet
  • FOD foreign object detection
  • an external electronic device having a wireless power reception function eg, an Rx function
  • the electronic device may not be able to detect the object.
  • a signal eg, a ping signal
  • the electronic device may heat an object existing on the electronic device, and due to induction heating from the heated object, The electronic device may generate heat.
  • Various embodiments disclosed in this document detect an object existing on the electronic device at a time prior to detecting the presence of an external electronic device that is a wireless charging target (eg, in a wireless charging standby state) and perform a related corresponding operation.
  • a wireless charging method capable of performing the same, and an electronic device supporting the same may be provided.
  • a power transmitting unit may include a power transmitting coil and a control circuit electrically connected to the power transmitting coil.
  • the control circuit sets a plurality of parameters related to a ping signal for the power transmitter to detect a target to transmit power, and based on the set plurality of parameters, the ping transmit a signal, measure at least one of a voltage and a current corresponding to the transmitted ping signal, change at least one of the plurality of parameters based on at least one of the measured voltage and current, and may include at least one of a frequency of the ping signal, a voltage for transmitting the ping signal, and a transmission period of the ping signal.
  • the wireless charging method of a power transmitting unit includes an operation of setting a plurality of parameters related to a ping signal for the power transmitting device to detect a target to transmit power, the transmitting the ping signal based on a plurality of set parameters, measuring at least one of a voltage and a current corresponding to the transmitted ping signal, and based on at least one of the measured voltage and current and changing at least one of parameters, wherein the plurality of parameters may include at least one of a frequency of the ping signal, a voltage for transmitting the ping signal, and a transmission period of the ping signal.
  • the electronic device includes a display constituting at least a portion of a front surface of the electronic device, a rear cover constituting at least a portion of a rear surface of the electronic device, and disposed adjacent to the rear cover between the display and the rear cover It may include a power transmission coil, and at least one processor electrically connected to the power transmission coil.
  • the at least one processor sets a plurality of parameters related to a ping signal for detecting an object disposed on the rear cover, and based on the set plurality of parameters, the ping transmit a signal, measure at least one of a voltage and a current corresponding to the transmitted ping signal, change at least one of the plurality of parameters based on at least one of the measured voltage and current, and may include at least one of a frequency of the ping signal, a voltage for transmitting the ping signal, and a transmission period of the ping signal.
  • a power transmitting unit may include a power transmitting coil and a control circuit electrically connected to the power transmitting coil.
  • the control circuit sets at least one parameter related to a ping signal for detecting a target to which the power transmission device is to transmit power, and based on the set at least one parameter, transmitting the ping signal, measuring a voltage corresponding to the transmitted ping signal, and when the measured voltage is less than or equal to a specified threshold voltage, a first parameter related to a voltage parameter for transmitting the ping signal among the at least one parameter
  • the voltage may be changed to a second voltage lower than the first voltage.
  • an object eg, a metal foreign body
  • FIG. 1 is a diagram illustrating an electronic device in a network environment according to an embodiment.
  • FIG. 2 is a diagram illustrating a power management module and a battery of an electronic device according to an exemplary embodiment.
  • 3A is a diagram illustrating a wireless charging environment between an electronic device and an external electronic device according to an exemplary embodiment.
  • 3B is a diagram illustrating some components of each of an electronic device and an external electronic device according to an exemplary embodiment.
  • 4A is a diagram illustrating a wireless charging operation state of an electronic device according to an exemplary embodiment.
  • 4B is a diagram illustrating an object detection operation section of an electronic device according to an exemplary embodiment.
  • 5A is a diagram illustrating an operation method when an electronic device detects an object according to an exemplary embodiment.
  • 5B is a diagram illustrating an operation method when an electronic device detects an object according to another exemplary embodiment.
  • FIG. 6 is a diagram illustrating electrical energy measured when a parameter of a ping signal is changed according to an exemplary embodiment.
  • FIG. 1 is a diagram illustrating an electronic device in a network environment according to an embodiment.
  • the electronic device 101 communicates with the electronic device 102 through a first network 198 (eg, a short-range wireless communication network) or a second network 199 . It may communicate with 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 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 device 150 , a sound output device 155 , a display device 160 , an audio module 170 , and a sensor module ( 176 , interface 177 , haptic module 179 , camera module 180 , power management module 188 , battery 189 , communication module 190 , subscriber identification module 196 , or antenna module 197 . ) may be included. In some embodiments, at least one of these components (eg, the display device 160 or the camera module 180 ) may be omitted or one or more other components may be added to the electronic device 101 . In some embodiments, some of these components may be implemented as a single integrated circuit. For example, the sensor module 176 (eg, a fingerprint sensor, an iris sensor, or an illuminance sensor) may be implemented while being embedded in the display device 160 (eg, a display).
  • the sensor module 176 eg, a fingerprint sensor, an iris sensor, or an illumina
  • the processor 120 for example, executes software (eg, a program 140) to execute at least one other component (eg, a hardware or software component) of the electronic device 101 connected to the processor 120 . It can control and perform various data processing or operations. According to an embodiment, as at least part of data processing or operation, the processor 120 converts commands or data received from other components (eg, the sensor module 176 or the communication module 190) to the volatile memory 132 . may be loaded into the volatile memory 132 , process commands or data stored in the volatile memory 132 , and store the resulting data in the non-volatile memory 134 .
  • software eg, a program 140
  • the processor 120 converts commands or data received from other components (eg, the sensor module 176 or the communication module 190) to the volatile memory 132 .
  • the volatile memory 132 may be loaded into the volatile memory 132 , process commands or data stored in the volatile memory 132 , and store the resulting data in the non-volatile memory 134 .
  • the processor 120 includes a main processor 121 (eg, a central processing unit or an application processor), and an auxiliary processor 123 (eg, a graphic processing unit or an image signal processor) that can be operated independently or together with the main processor 121 . , a sensor hub processor, or a communication processor). Additionally or alternatively, the auxiliary processor 123 may be configured to use less power than the main processor 121 or to be specialized for a designated function. The auxiliary processor 123 may be implemented separately from or as a part of the main processor 121 .
  • a main processor 121 eg, a central processing unit or an application processor
  • an auxiliary processor 123 eg, a graphic processing unit or an image signal processor
  • the auxiliary processor 123 may be configured to use less power than the main processor 121 or to be specialized for a designated function.
  • the auxiliary processor 123 may be implemented separately from or as a part of the main processor 121 .
  • the auxiliary processor 123 may be, for example, on behalf of the main processor 121 while the main processor 121 is in an inactive (eg, sleep) state, or when the main processor 121 is active (eg, executing an application). ), together with the main processor 121, at least one of the components of the electronic device 101 (eg, the display device 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 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, the program 140 ) and instructions related thereto.
  • the memory 130 may include a volatile memory 132 or a 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 device 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 (eg, a user) of the electronic device 101 .
  • the input device 150 may include, for example, a microphone, a mouse, a keyboard, or a digital pen (eg, a stylus pen).
  • the sound output device 155 may output a sound signal to the outside of the electronic device 101 .
  • the sound output device 155 may include, for example, a speaker or a receiver.
  • the speaker can be used for general purposes such as multimedia playback or recording playback, and the receiver can be used to receive incoming calls. According to an embodiment, the receiver may be implemented separately from or as a part of the speaker.
  • the display device 160 may visually provide information to the outside (eg, a user) of the electronic device 101 .
  • the display device 160 may include, for example, a display, a hologram device, or a projector and a control circuit for controlling the corresponding device.
  • the display device 160 may include a touch circuitry configured to sense a touch or a sensor circuit (eg, a pressure sensor) configured to measure the intensity of a force generated by the touch. there is.
  • the audio module 170 may convert a sound into an electric signal or, conversely, convert an electric signal into a sound. According to an embodiment, the audio module 170 acquires a sound through the input device 150 , or an external electronic device (eg, a sound output device 155 ) directly or wirelessly connected to the electronic device 101 . The sound may be output through the electronic device 102 (eg, a speaker or a headphone).
  • an external electronic device eg, a sound output device 155
  • the 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, user state), and generates an electrical signal or data value corresponding to the sensed state. can do.
  • the sensor module 176 may include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, It may include a temperature sensor, a humidity sensor, or an illuminance sensor.
  • the interface 177 may support one or more designated protocols that may be used for the electronic device 101 to directly or wirelessly connect with 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
  • the connection terminal 178 may include a connector through which the electronic device 101 can 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 an electrical signal into a mechanical stimulus (eg, vibration or movement) or an electrical stimulus that the user can perceive through tactile or kinesthetic sense.
  • 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 an embodiment, the camera module 180 may include one or more lenses, image sensors, image signal processors, or flashes.
  • the power management module 188 may manage power supplied to the electronic device 101 .
  • the power management module 188 may be implemented as, for example, at least a part of a power management integrated circuit (PMIC).
  • 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). It can support establishment and communication through the established communication channel.
  • 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 is 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, : It may include a local area network (LAN) communication module, or a power line communication module).
  • 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
  • GNSS global navigation satellite system
  • wired communication module 194 eg, : It may include a local area network (LAN) communication module, or a power line communication module.
  • a corresponding communication module may be a first network 198 (eg, a short-range communication network such as Bluetooth, WiFi direct, or infrared data association (IrDA)) or a second network 199 (eg, a cellular network, the Internet, or It may communicate with an external electronic device via a computer network (eg, a telecommunication network such as a LAN or WAN).
  • a computer network eg, a telecommunication network such as a LAN or WAN.
  • These various types of communication modules may be integrated into one component (eg, a single chip) or may be implemented as a plurality of components (eg, multiple chips) separate from each other.
  • 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 .
  • subscriber information eg, International Mobile Subscriber Identifier (IMSI)
  • IMSI International Mobile Subscriber Identifier
  • the antenna module 197 may transmit or receive a signal or power to the outside (eg, an external electronic device).
  • the antenna module may include one antenna including a conductor formed on a substrate (eg, a PCB) or a radiator formed of a conductive pattern.
  • the antenna module 197 may include a plurality of antennas. 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, for example, the communication module 190 . can be 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, RFIC
  • other than the radiator may be additionally formed as a part of the antenna module 197 .
  • peripheral devices eg, a bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)
  • GPIO general purpose input and output
  • SPI serial peripheral interface
  • MIPI mobile industry processor interface
  • the command 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 electronic devices 102 and 104 may be the same or a different type of the electronic device 101 .
  • all or some of the operations performed by the electronic device 101 may be performed by one or more of the external electronic devices 102 , 104 , or 108 .
  • the electronic device 101 may perform the function or service itself instead of executing the function or service itself.
  • one or more external electronic devices may be requested to perform at least a part of the function or the service.
  • the one or more external electronic devices that have received 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 transmit a result of the execution to the electronic device 101 .
  • the electronic device 101 may process the result as it is or additionally and provide it as at least a part of a response to the request.
  • cloud computing, distributed computing, or client-server computing technology may be used.
  • FIG. 2 is a diagram illustrating a power management module and a battery of an electronic device according to an exemplary embodiment.
  • the power management module 188 may include a charging circuit 210 , a power regulator 220 , or a fuel gauge 230 .
  • the charging circuit 210 charges the battery 189 (eg, the battery 189 of FIG. 1 ) using power supplied from an external power source to the electronic device 101 (eg, the electronic device 101 of FIG. 1 ).
  • the charging circuit 210 may include a type of the external power source (eg, a power adapter, USB, or wireless charging), a size of power that can be supplied from the external power source (eg, about 20 watts or more), or a battery A charging method (eg, normal charging or fast charging) may be selected based on at least some of the properties of 189 , and the battery 189 may be charged using the selected charging method.
  • the external power source is, for example, connected to the electronic device 101 by wire through the connection terminal 178 (eg, the connection terminal 178 of FIG. 1 ), or the antenna module 197 (eg, the antenna module of FIG. 1 ) 197)), and may be connected to the electronic device 101 wirelessly.
  • the power regulator 220 may generate a plurality of powers having different voltage levels or different current levels by adjusting the voltage level or current level of power supplied from the external power source or the battery 189 .
  • the power regulator 220 may adjust the external power source or the power of the battery 189 to a voltage level or a current level suitable for each 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.
  • LDO low drop out
  • the fuel gauge 230 may measure usage state information of the battery 189 (eg, the capacity of the battery 189 , the number of times of charging/discharging, voltage, or temperature).
  • the power management module 188 uses the charging circuit 210 , the power regulator 220 , or the fuel gauge 230 to charge the battery 189 based at least in part on the usage state information of the battery 189 . determine state of charge information related to the battery 189 (eg, life, overvoltage, undervoltage, overcurrent, overcharge, overdischarge, overheat, short circuit, or expansion), and based at least in part on the state of charge information, an abnormal state or normal state of the battery 189 After determining whether the state is in the abnormal state, charging of the battery 189 may be adjusted (eg, reduced charging current or charging voltage, or charging stopped). According to an 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 of FIG. 1 ).
  • an external control device eg, the processor 120 of FIG. 1 .
  • the battery 189 may include a battery protection circuit 240 (protection circuit module (PCM)).
  • the battery protection circuit 240 may perform various functions (eg, a pre-blocking function) to prevent deterioration or burnout of the battery 189 .
  • the battery protection circuit 240 is a battery management system for performing cell balancing, capacity measurement, charge/discharge count measurement, temperature measurement, or voltage measurement for the battery 189 . system (BMS)).
  • At least a portion of the use state information or the charge state information of the battery 189 may include the fuel gauge 230 , the power management module 188 , or the sensor module 176 (eg, the sensor module of FIG. 1 ). (176)) may be measured using a specific sensor (eg, a temperature sensor).
  • the specific sensor eg, a temperature sensor
  • the specific sensor may be included as a part of the battery protection circuit 240 or may be disposed in the vicinity of the battery 189 as a separate device.
  • the electronic device mentioned below with reference to the drawings may include a wireless Tx function for charging the external electronic device through wireless power transmission to the external electronic device, and the electronic device through wireless power reception from the external electronic device It may include a wireless charging Rx function for charging a device (or a battery included in the electronic device).
  • 3A is a diagram illustrating a wireless charging environment between an electronic device and an external electronic device according to an exemplary embodiment.
  • an electronic device 301 (eg, the electronic device 101 of FIG. 1 , hereinafter referred to as a power transmission device) performs wireless power transmission to an external electronic device 302 (eg: The electronic device 102 or the electronic device 104 of FIG. 1 (hereinafter referred to as a power receiving device) may be charged.
  • an external electronic device 302 eg: The electronic device 102 or the electronic device 104 of FIG. 1 (hereinafter referred to as a power receiving device)
  • the power transmitting device 301 transmits the power to the power receiving device 302 through wireless power transmission.
  • battery can be recharged.
  • the power transmission device 301 is a time before performing the wireless power transmission, for example, in a state of waiting for wireless charging, the power reception device 302 for the power transmission device 301 . It is possible to determine the proximity of (or detect the presence of the power receiving device 302 ). For example, the control circuit (eg, the processor 120 or the power management module 188 of FIG. 1 ) of the power transmitting device 301 determines whether the power receiving device 302 exists, or the power transmitting device ( A ping signal for determining whether a signal transmitted from the 301 is reachable to the power receiving device 302 may be transmitted.
  • the control circuit eg, the processor 120 or the power management module 188 of FIG. 1
  • the control circuit of the power transmission device 301 may receive an ack signal in response to the ping signal from the power reception device 302 , and the power reception device 302 transmits the power in response to the reception of the ack signal. It is possible to sense that the transmitter 301 is in contact with or adjacent to within a specified distance.
  • the power transmitter 301 and the power receiver 302 may be the same type of device.
  • each of the power transmitter 301 and the power receiver 302 may include a mobile device (eg, a smart phone).
  • the power transmitter 301 and the power receiver 302 may be heterogeneous devices that are at least partially different from each other.
  • the power transmitting device 301 may include a wireless charging device (eg, a wireless charging pad or a smart phone)
  • the power receiving device 302 may include a mobile device (eg, a smart phone, a sound output device (wireless) earphone), or a wearable device (smart watch)).
  • the control circuit of the power receiving device 301 is based at least in part on a ping signal for determining the proximity of the power receiving device 302 (or detecting the presence of the power receiving device 302 ). , it is possible to determine the presence or absence of an object (eg, a metal foreign substance) existing on the power transmission device 301 .
  • the control circuit of the power transmitter 301 may check a change in electrical energy (eg, at least one of current and voltage) measured when the ping signal is transmitted, and transmit power based on the change in electrical energy It is possible to determine whether an object exists on the device 301 .
  • the control circuit of the power transmitter 301 may change (or adjust) at least some of a plurality of parameters related to the ping signal, and at least some Ping signal transmission may be performed based on the changed parameter.
  • the control circuit of the power transmitter 301 may change (or adjust) at least some of a plurality of parameters related to the ping signal, and at least some Ping signal transmission may be performed based on the changed parameter.
  • 3B is a diagram illustrating some components of each of an electronic device and an external electronic device according to an exemplary embodiment.
  • an electronic device 301 (eg, the electronic device 101 of FIG. 1 ) according to an embodiment functions as a power transmission device or operates a power transmission function (eg, a Tx function), to an external electronic device 302 (eg, the electronic device 102 or the electronic device 104 in FIG. 1 , hereinafter referred to as a power receiver) in contact with or adjacent to the electronic device 301 (hereinafter referred to as a power transmitting device) It can transmit wireless power.
  • the power transmission device 301 may include at least one of a power transmission circuit 311 , a control circuit 312 , a communication circuit 313 , and a sensing circuit 314 .
  • the power transmission circuit 311 may receive power from an external power source (eg, a wall power source, an auxiliary battery device, a laptop computer, a desktop computer, or a smart phone), and a voltage of the input power A power adapter 311a that converts the A matching circuit 311c for maximizing the efficiency between the 321L may be included.
  • the power transmission circuit 311 includes a power adapter 311a, a power generation circuit 311b, a power transmission coil 311L, and a matching circuit ( 311c) may include a plurality of at least one.
  • control circuit 312 may perform overall control related to wireless power transmission (or wireless charging) of the power transmission device 301, and generate various messages accompanying the wireless power transmission. may be transmitted to the communication circuit 313 .
  • control circuit 312 is configured to transmit power (or amount of power) to the power receiving device 302 based on information received from the power receiving device 302 based on the communication circuit 313 . can be calculated.
  • the control circuit 312 may control the power transmission circuit 311 so that the calculated power is transmitted to the power reception device 302 by the power transmission coil 311L.
  • the communication circuit 313 may include at least one of a first communication circuit 313a and a second communication circuit 313b.
  • the first communication circuit 313a uses the same frequency as a frequency used for wireless power transmission in the power transmission coil 311L or a frequency of a band adjacent to the frequency used for wireless power transmission.
  • the second communication circuit 313b uses a frequency different from the frequency used for wireless power transmission in the power transmission coil 311L, and the second communication circuit 323b of the power reception device 302 .
  • the second communication circuit 313b is a power receiving device using at least one of Bluetooth, Bluetooth low energy, Wi-Fi, and near field communication.
  • Information eg, rectified voltage (Vrec) information, current (Iout) information flowing through the rectifier circuit, various packets, or message
  • Vrec rectified voltage
  • Iout current
  • the sensing circuit 314 may include at least one sensor, and detect at least one state of the power transmitter 301 using the at least one sensor.
  • the sensing circuit 314 may include at least one of a temperature sensor, a motion sensor, and a current (or voltage) sensor, and detects a temperature state of the power transmitter 301 using the temperature sensor.
  • a motion state of the power transmitter 301 is detected using the motion sensor, or an output signal state (eg, current magnitude, voltage magnitude) of the power transmitter 301 is detected using the current (or voltage) sensor. , or power magnitude).
  • the current (or voltage) sensor may measure a signal to the power transmission circuit 311 .
  • the current (or voltage) sensor may measure a signal for at least some of the matching circuit 311c and the power generating circuit 311b, and in this regard, the current (or voltage) sensor transmits power
  • a circuit for measuring a signal for the front end of the coil 311L may be included.
  • the sensing circuit 314 may include an external object (eg, a metallic material) that exists between the power transmitter 301 and the power receiver 302 (or exists on the power transmitter 301 ). ) can be detected.
  • the power transmission device 301 when the power transmission device 301 is a mobile device (eg, a smart phone), the power transmission device 301 may include a display (eg, the display device 160 of FIG. 1 ).
  • the power transmitting device 301 uses the display to provide various information related to wireless charging (eg, information about the charging state of the power transmitting device 301 , information about the charging state of the power receiving device 302 , and the power receiving device). Information about the detection of 302, or information about the detection of an external object (metallic material) may be displayed.
  • the power receiving device 302 may include at least one of a power receiving circuit 321 , a control circuit 322 , a communication circuit 323 , at least one sensor 324 , and a display 325 .
  • a power receiving circuit 321 may include at least one of a power receiving circuit 321 , a control circuit 322 , a communication circuit 323 , at least one sensor 324 , and a display 325 .
  • the power receiving circuit 321 includes a power receiving coil 321L that receives wireless power from the power transmitting device 301 (or from the power transmitting coil 311L), a matching circuit 321a, It may include at least one of a rectifying circuit 321b for rectifying the received AC power into DC, an adjustment circuit 321c for adjusting the charging voltage, a switching circuit 321d, and a battery 321e.
  • control circuit 322 may perform overall control related to wireless power reception (or wireless charging) of the power receiving device 302 , and generate various messages accompanying the wireless power reception. to the communication circuit 323 .
  • the communication circuit 323 may include at least one of a first communication circuit 323a and a second communication circuit 323b.
  • the first communication circuit 323a may communicate with the first communication circuit 313a of the power transmission device 301 using the power reception coil 321L
  • the second communication circuit 323b may communicate with the second communication circuit 313b of the power transmission device 301 using at least one of Bluetooth, low-power Bluetooth, Wi-Fi, and short-range wireless communication.
  • the at least one sensor 324 may include at least one of a current (or voltage) sensor, a temperature sensor, an illuminance sensor, and an acceleration sensor, and the display 325 receives ( Alternatively, various information accompanying wireless charging) may be displayed.
  • FIG. 4A is a diagram illustrating a wireless charging operation state of an electronic device according to an embodiment
  • FIG. 4B is a diagram illustrating an object detection operation section of the electronic device according to an embodiment.
  • an electronic device 401 (eg, the electronic device 101 of FIG. 1 ) according to an embodiment functions as a power transmission device or operates a power transmission function (eg, a Tx function).
  • an external electronic device 402 eg, the electronic device 102 or the electronic device 104 of FIG. 1 , hereinafter referred to as a power receiver
  • the power transmission device 401 sequentially performs a ping operation 410 , an identification & configuration operation 420 , and a power transfer operation 430 .
  • at least one signal (or data) may be transmitted/received to and from the power receiving device 402 .
  • the control circuit eg, the control circuit 312 of FIG. 3B
  • the control circuit 312 of FIG. 3B may transmit a digital or analog ping signal in the ping operation 410 .
  • the presence of the power receiving device 402 eg, contact to the power transmitting device 401 or proximity within a specified distance
  • the control circuit 312 of the power transmitter 401 may set a plurality of parameters related to transmission of the ping signal in the ping operation 410 .
  • the control circuit 312 of the power transmission device 401 is configured to transmit a frequency of the ping signal and a power transmission circuit (eg, the power transmission circuit 311 of FIG. 3B ) (or FIG. 3B ) to transmit the ping signal.
  • the plurality of parameters related to at least one of a voltage applied to the power transmission coil 311L of 3b) and a transmission period of the ping signal may be set.
  • the plurality of parameters may be set as default values in an initial setting operation of the wireless charging system of the power transmitter 401 .
  • the control circuit 312 of the power transmitting device 401 is an object (eg, a metal foreign body) existing on the power transmitting unit 401 (on the power transmitting unit). It can be judged whether there is In this regard, the control circuit 312 of the power transmitter 401 transmits a ping signal during an operation period (eg, the ping phase of FIG. 4B ) (or wireless charging standby state) related to the ping operation 410 . may transmit a ping signal based on a plurality of parameters related to , and electrical energy (eg, current and at least one of the voltages).
  • an operation period eg, the ping phase of FIG. 4B
  • electrical energy eg, current and at least one of the voltages.
  • the control circuit 312 of the power transmission device 401 corresponds to the transmission of the ping signal, the voltage measured by the power transmission circuit 311 (or the power transmission coil 311L) and a specified threshold voltage Check at least one of a relationship between the relationship between It is possible to determine whether an object exists or not.
  • the control circuit 312 of the power transmission device 401 may transmit electrical energy (eg, current) measured by the power transmission circuit 311 (or the power transmission coil 311L) in response to the ping signal transmission. and at least one of voltage) to detect a state of an object (eg, a type of an object, a size of an object, or an arrangement state of an object) or a state change of an object existing on the power transmission device 401 .
  • electrical energy eg, current
  • the control circuit 312 of the power transmission device 401 may transmit electrical energy (eg, current) measured by the power transmission circuit 311 (or the power transmission coil 311L) in response to the ping signal transmission. and at least one of voltage) to detect a
  • the control circuit 312 of the power transmission device 401 may generate noise (eg, an object) due to the object. vibration of and/or noise in the audible frequency band due to the vibration), heat of the object, or deterioration of the power transmission device 401 caused by the object (eg, the power transmission device 401 by induction heating from the object) to suppress heat generation), at least some of a plurality of parameters related to ping signal transmission may be changed (or adjusted).
  • the control circuit 312 of the power transmission device 401 may control the output of a specified notification (eg, light emission, vibration, or sound) to provide a notification of the existence of the object. have.
  • the control circuit 312 of the power receiving device 401 detects the power receiving device 402 , and in the authentication and configuration operation 420 , identification information from the power receiving device 402 and Receive configuration information.
  • the identification information may include at least one piece of information for authenticating the power receiving device 402 (eg, a wireless communication ID of the power receiving device 402 ).
  • the control circuit 312 of the power transmission device 401 determines that the identification information and information (eg, the power transmission device 401 and wireless power sharing are authenticated) pre-recorded in the memory (eg, the memory 130 of FIG. 1 ). If the wireless communication IDs of the power receivers match, the detected power receiver 402 may be determined as a valid device.
  • the configuration information may include various types of information required for the power receiving device 402 to receive wireless power from the power transmitting device 401 .
  • the control circuit 312 of the power transmitter 401 may transmit wireless power.
  • the control circuit 312 of the power transmitter 401 is a control error packet (CEP) signal including notification information on the power (or amount of power) required for the power receiver 402 for charging. and a received power packet (RPP) signal including information on the amount of power (or amount of power) received by the power receiving device 402 , from the power receiving device 402 .
  • CEP control error packet
  • RPP received power packet
  • the control circuit 312 of the power transmitter 401 may adjust the wireless power transmitted to the power receiver 402 based on at least one of the CEP signal and the RPP signal.
  • 5A is a diagram illustrating an operation method when an electronic device detects an object according to an exemplary embodiment.
  • a control circuit eg, the control circuit 312 of FIG. 3B of the electronic device (eg, the electronic device 101 of FIG. 1 , hereinafter referred to as a power transmitter) transmits a ping signal
  • a plurality of parameters related to (ping signal) transmission can be set.
  • the control circuit 312 of the power transmitting device performs a ping to detect an external electronic device (eg, the electronic device 102 or the electronic device 104 of FIG. 1 , hereinafter referred to as a power receiving device).
  • the plurality of parameters may be set.
  • control circuit 312 of the power transmission apparatus is at least a part of the plurality of parameters, and a frequency of a ping signal (eg, a first frequency) and a power transmission circuit (eg: A voltage (eg, a first voltage) applied to the power transmission circuit 311 of FIG. 3B ) (or the power transmission coil 311L of FIG. 3B ) and a period of transmitting the ping signal (eg, a first cycle) At least one can be set.
  • a frequency of a ping signal eg, a first frequency
  • a power transmission circuit eg: A voltage (eg, a first voltage) applied to the power transmission circuit 311 of FIG. 3B ) (or the power transmission coil 311L of FIG. 3B ) and a period of transmitting the ping signal (eg, a first cycle) At least one can be set.
  • the plurality of parameters related to the transmission of the ping signal may be set to default values in the initial setting operation of the wireless charging system of the power transmission device without setting by the control circuit 312, in which case the control The operation 501 of the circuit 312 may be omitted.
  • control circuit 312 of the power transmitter may transmit a ping signal based on a plurality of set parameters (eg, at least one of a first frequency, a first voltage, and a first period).
  • the control circuit 312 of the power transmission device may measure electrical energy corresponding to transmission of a ping signal.
  • the control circuit 312 of the power transmission device uses a sensing circuit (eg, the sensing circuit 314 of FIG. 3B ), and according to the transmission of the ping signal, a power transmission circuit (eg, the power transmission circuit of FIG. 3B ) 311)) (or, the electric energy (eg, voltage) measured at a specified point in the power transmission coil 311L of FIG. 3B may be checked (or measured).
  • the control circuit 312 of the power transmission device may compare the identified electrical energy (eg, voltage) with a specified threshold voltage, based on the comparison, for at least some of a plurality of parameters related to transmission of a ping signal. It may be determined whether a change (or adjustment) condition is satisfied. According to an embodiment, when the measured voltage exceeds a specified threshold voltage, the control circuit 312 of the power transmitter determines that the change condition is not satisfied, and transmits a ping signal in response to operation 503 The operation may be performed based on a plurality of preset parameters.
  • the identified electrical energy eg, voltage
  • a specified threshold voltage e.g., a specified threshold voltage
  • the control circuit 312 of the power transmission apparatus determines that the change condition is satisfied, and in response thereto, in operation 509, at least one of a plurality of preset parameters Some may be changed (or adjusted).
  • the control circuit 312 of the power transmitter may determine that the first object (eg, a metal foreign body) is present on the power transmitter as it is determined that the measured voltage is equal to or less than a specified threshold voltage.
  • the control circuit 312 of the power transmitter may change (or adjust) at least one of a preset first frequency, a first voltage, and a first period in order to suppress noise or deterioration caused by the first object. .
  • control circuit 312 of the power transmitter may change the first frequency to a second frequency of a band higher than the first frequency, change the first voltage to a second voltage lower than the first voltage, and changing the first period to a second period longer than the first period.
  • control circuit 312 of the power transmitter may transmit a ping signal based on at least one of the changed second frequency, second voltage, and second period.
  • FIG. 5B is a diagram illustrating an operation method when an electronic device detects an object according to another exemplary embodiment.
  • operations identical to or similar to those described above with reference to FIG. 5A are given the same reference numerals, and overlapping descriptions may be omitted.
  • the control circuit of the power transmission device determines in operation 507 that the measured voltage exceeds a specified threshold voltage, in operation 511, the confirmed A current that is at least a fraction of the electrical energy may be compared with a specified threshold current.
  • the control circuit 312 of the power transmitter determines that the change (or adjustment) condition for the plurality of parameters is not satisfied, and operates accordingly
  • the ping signal transmission operation according to 503 may be performed based on a plurality of preset parameters.
  • the control circuit 312 of the power transmitter determines that the change (or adjustment) condition is satisfied, and in response thereto, in operation 509, a preset At least some of the plurality of parameters may be changed (or adjusted).
  • the control circuit 312 of the power transmission device determines that the measured current is greater than or equal to a specified threshold current, so that a second object (eg, a size smaller than the size of the first object described above) on the power transmission device metal foreign matter) may be present, and a preset transmission period of the ping signal may be changed from a first period to a second period longer than the first period.
  • FIG. 6 is a diagram illustrating electrical energy measured when a parameter of a ping signal is changed according to an exemplary embodiment.
  • FIG. 6 is a diagram illustrating electrical energy measured from a comparison target power transmitter to which a parameter change algorithm related to ping transmission is not applied, and a power transmitter according to an embodiment to which a parameter change algorithm related to transmitting a ping signal is applied (eg, FIG. 1 ). may represent electrical energy measured from the electronic device 101 of
  • a voltage for transmitting a ping signal may be stepped down by an object (eg, a metal foreign body) on the comparison target power transmission device, and the comparison target power transmission The device may boost the step-down voltage to send out a ping signal.
  • electrical energy measured from the comparison target power transmitter may exhibit repetitive fluctuations.
  • the ping signal transmitted from the comparison target power transmitter acts on the object, and noise (eg, vibration of the object and/or noise in an audible frequency band caused by the vibration) is generated from the object, and induction from the object It can be confirmed that heat is generated in the comparison target power transmission device due to heating.
  • the power transmitter includes at least a parameter related to transmission of the ping signal based on object detection at a time before detection of the power receiver (or in a wireless charging standby state, or in a ping signal operation section). A part may be changed (or adjusted), and accordingly, it may be confirmed that fluctuations in voltage for transmitting a ping signal, noise, or heat of the power transmission device caused by the object are suppressed.
  • a power transmitting unit may include a power transmitting coil and a control circuit electrically connected to the power transmitting coil.
  • the control circuit sets a plurality of parameters related to a ping signal for the power transmitter to detect a target to transmit power, and based on the set plurality of parameters, the ping It is possible to transmit a signal, measure at least one of a voltage and a current corresponding to the transmitted ping signal, and change at least one of the plurality of parameters based on at least one of the measured voltage and current.
  • the plurality of parameters may include at least one of a frequency of the ping signal, a voltage for transmitting the ping signal, and a transmission period of the ping signal.
  • control circuit may change at least one of the plurality of parameters when the measured voltage is equal to or less than a specified threshold voltage.
  • the control circuit when the measured voltage is less than or equal to a specified threshold voltage, changes the frequency of the ping signal from a first frequency to a second frequency higher than the first frequency, and transmits the ping signal voltage to be used may be changed from a first voltage to a second voltage lower than the first voltage, and a transmission period of the ping signal may be changed from a first period to a second period longer than the first period.
  • control circuit may change at least one of the plurality of parameters when the measured current is equal to or greater than a specified threshold current.
  • control circuit may change the transmission period of the ping signal from a first period to a second period longer than the first period when the measured current is equal to or greater than a specified threshold current.
  • the control circuit may set a period for transmitting the ping signal in a first period longer than the first period
  • the second cycle may be changed, and the fast charging function of the power transmitter may be limited.
  • a metallic foreign material is present on the power transmitting unit (on the power transmitting unit) and may output a notification for indicating the presence of the metal foreign material.
  • the power transmitter may further include at least one of an LED, a motor, and a speaker.
  • control circuit may output the notification using at least one of light emitted through the LED, vibration through the motor, and sound through the speaker.
  • the wireless charging method of a power transmitting unit includes an operation of setting a plurality of parameters related to a ping signal for detecting a target to which the power transmitting device is to transmit power , transmitting the ping signal based on the set plurality of parameters, measuring at least one of a voltage and a current corresponding to the transmitted ping signal, and based on at least one of the measured voltage and current It may include an operation of changing at least one of the plurality of parameters.
  • the plurality of parameters may include at least one of a frequency of the ping signal, a voltage for transmitting the ping signal, and a transmission period of the ping signal.
  • the operation of changing at least one of the plurality of parameters may include the operation of changing at least one of the plurality of parameters when the measured voltage is equal to or less than a specified threshold voltage.
  • the changing of at least one of the plurality of parameters may include changing the frequency of the ping signal from a first frequency to a second frequency higher than the first frequency when the measured voltage is less than or equal to a specified threshold voltage. changing the voltage for transmitting the ping signal from a first voltage to a second voltage lower than the first voltage, and changing a transmitting period of the ping signal in a first period longer than the first period It may include an operation of changing in two cycles.
  • the operation of changing at least one of the plurality of parameters may include the operation of changing at least one of the plurality of parameters when the measured current is equal to or greater than a specified threshold current.
  • the operation of changing at least one of the plurality of parameters may include changing the transmission period of the ping signal from a first period to a second period longer than the first period when the measured current is equal to or greater than a specified threshold current. It may include an action to change.
  • the changing of at least one of the plurality of parameters may include, when the measured voltage is less than or equal to a specified threshold voltage, or when the measured current is greater than or equal to a specified threshold current, setting the transmission period of the ping signal to a first It may include an operation of changing the period to a second period longer than the first period and an operation of limiting a fast charging function of the power transmitter.
  • the wireless charging method when the measured voltage is less than or equal to a specified threshold voltage, or when the measured current is greater than or equal to a specified threshold current, a metal foreign material on the power transmitting unit (on the power transmitting unit)
  • the method may further include an operation of determining that there is a metal foreign body and an operation of outputting a notification for indicating the presence of the metal foreign material.
  • the electronic device includes a display constituting at least a portion of a front surface of the electronic device, a rear cover constituting at least a portion of a rear surface of the electronic device, and adjacent to the rear cover between the display and the rear cover. It may include a power transmission coil disposed, and at least one processor electrically connected to the power transmission coil.
  • the at least one processor sets a plurality of parameters related to a ping signal for detecting an object disposed on the rear cover, and based on the set plurality of parameters, the ping It is possible to transmit a signal, measure at least one of a voltage and a current corresponding to the transmitted ping signal, and change at least one of the plurality of parameters based on at least one of the measured voltage and current.
  • the plurality of parameters may include at least one of a frequency of the ping signal, a voltage for transmitting the ping signal, and a transmission period of the ping signal.
  • the at least one processor when the measured voltage is equal to or less than a specified threshold voltage, changes the frequency of the ping signal from a first frequency to a second frequency that is higher than the first frequency, and the ping signal may be changed from a first voltage to a second voltage lower than the first voltage, and a transmission period of the ping signal may be changed from a first period to a second period longer than the first period.
  • the at least one processor may change the ping signal transmission period from a first period to a second period longer than the first period.
  • the at least one processor may change the transmission period of the ping signal from a first period to the first period. It may be changed to a longer second cycle, and the fast charging function of the power transmitting device may be limited.
  • a power transmitting unit may include a power transmitting coil and a control circuit electrically connected to the power transmitting coil.
  • the control circuit sets at least one parameter related to a ping signal for detecting a target to which the power transmission device transmits power, and based on the set at least one parameter, a first voltage related to a voltage parameter for transmitting the ping signal among the at least one parameter by transmitting the ping signal, measuring a voltage corresponding to the transmitted ping signal, and when the measured voltage is less than or equal to a specified threshold voltage may be changed to a second voltage lower than the first voltage.
  • 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 device.
  • 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 “second” may simply be used to distinguish the component from other such components, and refer to the component in another aspect (e.g., importance or order) is not limited.
  • One (eg, first) component is referred to as “coupled” or “connected” to another (eg, second) component, with or without the terms “functionally” or “communicatively”.
  • it means that one component can be connected to the other component directly (eg by wire), wirelessly, or through a third component.
  • module may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as, for example, logic, logic block, component, or circuit.
  • a module may be an integrally formed part or a minimum unit or a part of the part 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
  • one or more instructions stored in a storage medium may be implemented as software (eg, the program 140) including
  • the processor eg, the processor 120
  • the device may call at least one of one or more instructions stored from a storage medium and execute it. This makes it possible for the device to be operated to perform at least one function according to the at least one command called.
  • 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.
  • 'non-transitory' only means that the storage medium is a tangible device and does not contain a signal (eg, electromagnetic wave), and this term is used in cases where data is semi-permanently stored in the storage medium and It does not distinguish between temporary storage cases.
  • a signal eg, electromagnetic wave
  • the method according to various embodiments disclosed in this document may be provided by being included in a computer program product.
  • Computer program products may be traded between sellers and buyers as commodities.
  • the computer program product is distributed in the form of a machine-readable storage medium (eg compact disc read only memory (CD-ROM)), or via an application store (eg Play Store TM ) or on two user devices ( It can be distributed (eg downloaded or uploaded) directly, online between smartphones (eg: smartphones).
  • a part of the computer program product may be temporarily stored or temporarily created in a machine-readable storage medium such as a memory of a server of a manufacturer, a server of an application store, or a memory of a relay server.
  • each component eg, a module or a program of the above-described components may include a singular or a plurality of entities.
  • one or more components or operations among the above-described corresponding components may be omitted, or one or more other components or operations may be added.
  • a plurality of components eg, a module or a program
  • the integrated component may perform one or more functions of each component of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. .
  • operations performed by a module, program, or other component are executed sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations are executed in a different order, omitted, or , or one or more other operations may be added.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

La présente invention concerne une unité de transmission de puissance, qui dans un mode de réalisation comprend une bobine de transmission de puissance et un circuit de commande électriquement connecté à la bobine de transmission de puissance, le circuit de commande étant réglé pour amener l'unité de transmission de puissance à: établir une pluralité de paramètres associés à un signal ping pour détecter une cible vers laquelle la puissance doit être transmise; transmettre le signal ping sur la base de la pluralité de paramètres définis; mesurer au moins une d'une tension et/ou un courant correspondant au signal d'impulsion émis; et modifier au moins un paramètre parmi la pluralité de paramètres sur la base d'au moins la tension et/ou le courant mesuré, la pluralité de paramètres comprenant au moins un élément parmi la fréquence du signal ping, la tension pour transmettre le signal ping, et l'intervalle de transmission du signal ping.
PCT/KR2021/001487 2020-02-10 2021-02-04 Procédé de charge sans fil, et unité électronique prenant en charge ce procédé WO2021162343A1 (fr)

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KR1020200015969A KR20210101705A (ko) 2020-02-10 2020-02-10 무선 충전 방법 및 이를 지원하는 전자 장치
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160011143A (ko) * 2014-06-20 2016-01-29 엘지전자 주식회사 무선 전력 전송방법, 무선 전력 전송장치 및 무선 충전 시스템
WO2018163170A1 (fr) * 2017-03-07 2018-09-13 Powermat Technologies Ltd. Système de charge d'énergie sans fil
US20180351659A1 (en) * 2017-06-02 2018-12-06 Apple Inc. Methods, Systems and Apparatus for Mitigating Wireless Connection Degradation Due To Wireless Charging
KR20190082891A (ko) * 2016-11-15 2019-07-10 엘지전자 주식회사 무선 전력 전달 방법 및 이를 위한 장치
WO2019165383A1 (fr) * 2018-02-23 2019-08-29 Juic Inc. Tapis de charge à positionnement libre

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20160011143A (ko) * 2014-06-20 2016-01-29 엘지전자 주식회사 무선 전력 전송방법, 무선 전력 전송장치 및 무선 충전 시스템
KR20190082891A (ko) * 2016-11-15 2019-07-10 엘지전자 주식회사 무선 전력 전달 방법 및 이를 위한 장치
WO2018163170A1 (fr) * 2017-03-07 2018-09-13 Powermat Technologies Ltd. Système de charge d'énergie sans fil
US20180351659A1 (en) * 2017-06-02 2018-12-06 Apple Inc. Methods, Systems and Apparatus for Mitigating Wireless Connection Degradation Due To Wireless Charging
WO2019165383A1 (fr) * 2018-02-23 2019-08-29 Juic Inc. Tapis de charge à positionnement libre

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