WO2023068726A1 - 무선으로 전력을 전송하는 전자 장치와 이의 동작 방법 - Google Patents
무선으로 전력을 전송하는 전자 장치와 이의 동작 방법 Download PDFInfo
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- WO2023068726A1 WO2023068726A1 PCT/KR2022/015814 KR2022015814W WO2023068726A1 WO 2023068726 A1 WO2023068726 A1 WO 2023068726A1 KR 2022015814 W KR2022015814 W KR 2022015814W WO 2023068726 A1 WO2023068726 A1 WO 2023068726A1
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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
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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
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
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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
- H02J50/10—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
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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
- H02J50/20—Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/023—Generators characterised by the type of circuit or by the means used for producing pulses by the use of differential amplifiers or comparators, with internal or external positive feedback
Definitions
- Various embodiments relate to an electronic device that wirelessly transmits power and/or an operating method thereof.
- This wireless charging technology uses wireless power transmission and reception, and is, for example, a system in which a battery can be automatically charged by simply placing an electronic device on a charging pad without connecting the electronic device to a separate charging connector.
- Wireless charging technology largely includes an electromagnetic induction method using a coil, a resonance method using resonance, and an RF/Micro Wave Radiation method that converts electrical energy into microwaves and transmits them.
- a method of transmitting power by wireless charging is a method of transmitting power between a first coil of a transmitting end and a second coil of a receiving end.
- a magnetic field is generated at the transmitting end and current is induced or resonated according to the change of the magnetic field at the receiving end to generate energy.
- a power transmitting unit (PTU) e.g. wireless charging pad
- PRU power receiving unit
- IoT internet of things
- the wireless power transmitter may include a coil (hereinafter referred to as a detection coil) for detecting the foreign matter (FO).
- the wireless power transmitter uses this detection coil to detect the presence or absence of a foreign object before and/or during wireless charging, so as not to start transmitting wireless power and/or to stop transmitting wireless power. Fire hazards in power systems can be prevented or reduced.
- a conventional wireless power transmission device flattens a low-voltage section of an input voltage in which pulsation occurs, and detects a foreign object in the flattened corresponding time section.
- the existing wireless power transmission device had to be provided with a separate DC power source to flatten the low voltage section.
- the existing wireless power transmission device requires resources of a control circuit (eg, MCU) for accurately recognizing and controlling a low voltage period, in addition to DC power, It was necessary to use a complex algorithm to recognize and control this. Accordingly, the existing wireless power transmission apparatus had to secure a control circuit capable of calculating complex algorithms and resources of the control circuit for smooth detection of foreign matter.
- Various embodiments may provide a wireless power transmission device capable of detecting a foreign substance without using a DC power supply and/or a specific algorithm in a wireless power transmission system in which pulsation is allowed (or generated) and an operating method thereof. .
- a first electronic device that wirelessly transmits power includes a power transmission circuit, a memory, a pulse generator, and a foreign substance for detecting a foreign substance located on a path for wirelessly transmitting power through the power transmission circuit.
- a detection circuit and a control circuit wherein the control circuit wirelessly transmits power to a second electronic device based on an AC input voltage applied to the power transmission circuit and, through the pulse generator, A trigger signal synchronized at a first time point corresponding to a designated voltage of an input voltage is generated, an output value of the foreign material detection circuit checked at the first time point based on the trigger signal is stored in the memory, and the pulse generator Until a trigger signal of the next cycle is received in the memory, the output value stored in the memory may be continuously acquired from the memory for a specified time period, and the foreign material may be detected based on the output value obtained during the specified time period. there is.
- a method of operating a first electronic device includes an operation of wirelessly transmitting power to a second electronic device based on an input voltage in the form of an alternating current applied to a power transmission circuit included in the first electronic device. , Generating a trigger signal synchronized at a first time point corresponding to a designated voltage of the input voltage through a pulse generator included in the first electronic device, An operation of storing an output value of a foreign material detection circuit for detecting a foreign material located on a path for wirelessly transmitting power included in an electronic device in a memory included in the electronic device, and a trigger signal of the next cycle from the pulse generator It may include continuously obtaining the output value stored in the memory from the memory for a specified period of time until it is received in the memory, and detecting the foreign material based on the output value obtained during the specified period of time.
- a non-transitory recording medium wirelessly transmits power to a second electronic device based on an AC input voltage applied to a power transmission circuit included in the first electronic device; An operation of generating a trigger signal synchronized at a first time point corresponding to a designated voltage of the input voltage through a pulse generator included in the electronic device, included in the electronic device identified at the first time point based on the trigger signal An operation of storing an output value of a foreign matter detection circuit for detecting a foreign matter located on a path for transmitting power wirelessly to a memory included in the electronic device, and receiving a trigger signal of the next cycle from the pulse generator into the memory Until then, a program capable of continuously acquiring the output value stored in the memory from the memory for a specified time and detecting the foreign material based on the output value obtained for the specified time can be stored.
- a wireless power transmission apparatus may detect a foreign substance without using a DC power source and a specific algorithm in a wireless power transmission system in which pulsation is permitted (or generated).
- FIGS. 1A and 1B are diagrams illustrating a wireless power system including a wireless power transmitter and a wireless power receiver according to various embodiments.
- FIG. 2 is a diagram for explaining the operation of a wireless power transmission device according to various embodiments.
- FIG. 3 is a schematic block diagram of a wireless power system including a wireless power transmitter and a wireless power receiver according to various embodiments.
- FIG. 4 is a diagram for explaining an operation of outputting a trigger signal by a pulse generator according to various embodiments.
- FIG. 5 is a diagram for explaining an operation of outputting a signal corresponding to an output value of a foreign material detection circuit by a memory according to various embodiments of the present disclosure.
- FIG. 6 is a flowchart for explaining an operation of a wireless power transmission device according to various embodiments.
- FIG. 7A and 7B are diagrams for explaining a pulse generator according to various embodiments.
- FIG. 8 is a diagram for explaining an operation of outputting a trigger signal by a pulse generator according to various embodiments.
- 9A and 9B are diagrams for describing a memory according to various embodiments of the present disclosure.
- FIG. 10 is a block diagram of an electronic device in a network environment, according to various embodiments.
- FIGS. 1A and 1B are diagrams illustrating a wireless power system including a wireless power transmitter and a wireless power receiver according to various embodiments.
- 2 is a diagram for explaining the operation of a wireless power transmission device according to various embodiments.
- a wireless power transmission includes a wireless power transmission device 100 and a wireless power reception device 150 that transmit wireless power.
- the wireless power transmitter 100 may wirelessly transmit power to the wireless power receiver 150 .
- the wireless power transmission apparatus 100 may be implemented as a pad that wirelessly transmits power.
- the wireless power receiver 150 may be implemented as an internet of things (IoT) device.
- IoT internet of things
- the technical spirit of the present invention may not be limited thereto, and the wireless power transmitter 100 and the wireless power receiver 150 may be implemented with various types and types of electronic devices.
- the input voltage Voltage pulsation of a designated frequency (eg, 120 Hz) by (eg, AC voltage) may be generated. Due to the input voltage including the pulsation, the same pulsation as the input voltage may be generated in the current and magnetic field of the wireless power transmission apparatus 100 during wireless power transmission.
- the foreign matter detection unit 120 included in the wireless power transmission device 100 (eg, the foreign matter detection coil 122 and the foreign matter detection circuit 124 in FIG. 3) ) saturation and noise may occur.
- a conventional wireless power transmission device may flatten a low-voltage section of the input voltage 205 in which pulsation occurs to perform foreign matter detection in a corresponding time section (eg, non-saturation section).
- the conventional wireless power transmission device had to be provided with a separate DC power source to flatten the low voltage section. That is, a conventional wireless power transmission device needs to apply separate DC power to secure a sufficiently large low voltage period.
- a conventional wireless power transmission device had to secure stable DC power using an AC/DC converter.
- a conventional wireless power transmission device may instantaneously shift a driving frequency for wireless power transmission in a low voltage period in order to apply a DC voltage.
- a conventional wireless power transmission apparatus may perform wireless power transmission at a frequency of 20 kHz in a high voltage period and wireless power transmission at a frequency of 80 kHz in a low voltage time period (eg, a non-saturated period).
- a control circuit capable of accurately recognizing and controlling a low voltage section (eg, MCU) resource usage (eg, IO and interrupt consumption) may be required.
- the length (or length of time) of the corresponding time interval eg, non-saturation interval
- the wireless power transmitter is the above time interval ( For example, it may be necessary to use a specific algorithm for appropriately recognizing and controlling the time length of the non-saturation period).
- a specific algorithm requires complex calculations, it is necessary to secure the performance and resources of the control circuit.
- the wireless power transmission apparatus 100 may perform foreign matter detection without using DC power and/or a specific algorithm in a wireless power transmission system in which pulsation is allowed (or generated). For example, since the wireless power transmitter 100 does not apply a DC voltage, it may not change the shape of the input voltage like a conventional wireless power transmitter.
- the wireless power transmitter 100 instantaneously (eg, within a designated time 220 (eg, 10 ⁇ s)) in a non-saturation period of the input voltage, checks and stores the output value of the foreign matter detector, and sets the size of the checked and stored output value. It can be continuously provided to the control circuit for foreign matter detection for a specified period of time while being maintained. That is, the wireless power transmitter 100 may sample the instantaneously identified output of the foreign material detection circuit and detect the foreign material using the sampled output value.
- the wireless power transmission apparatus 100 does not need to apply a DC voltage, the driving frequency for wireless power transmission may not be instantaneously shifted in a low voltage period.
- the wireless power transmitter 100 can reduce resource consumption required for recognizing a low voltage period.
- 3 is a schematic block diagram of a wireless power system including a wireless power transmitter and a wireless power receiver according to various embodiments.
- 4 is a diagram for explaining an operation of outputting a trigger signal by a pulse generator according to various embodiments.
- the wireless power transmission device 100 includes a control circuit 102, a memory 105, a power supply unit 106, a pulse generator 108, a power transmission circuit 110, And it may include a foreign matter detection unit 120.
- the wireless power transmitter 100 may not include a separate AC/DC converter.
- the wireless power receiver 150 may include a power receiver circuit 160 and a load 170 .
- the wireless power receiver 150 may further include a processor (not shown), a communication circuit (not shown), a power management integrated circuit (PMIC) (not shown), and a memory (not shown).
- a processor not shown
- a communication circuit not shown
- PMIC power management integrated circuit
- a memory not shown
- the power transmission circuit 110 is a power reception circuit 160 and may wirelessly transmit power according to at least one of an induction method, a resonance method, and an electromagnetic wave method.
- the power transmission circuit 110 may include a rectifier 112 , a high frequency inverter 114 , and a transmission coil unit 116 .
- the rectifying unit 112 may receive power from the power supply unit 106 and provide rectified power obtained by rectifying the received power to the high frequency inverter 114 .
- the power supply unit 106 may receive power based on power supplied from, for example, a charger (eg, TA, travel adapter) and transfer the received power to the high frequency inverter 114 .
- the high frequency inverter 114 may amplify the received power and transmit it to the transmission coil unit 116 .
- the transmission coil unit 116 may include a coil and a matching circuit.
- the power transmission circuit 110 may further include capacitors constituting a resonant circuit together with a coil.
- the resonant frequency may be defined according to a standard, and may have a frequency of about 100 to about 205 kHz according to the Qi standard based on an inductive method, and may have a frequency of about 6.78 MHz according to the AFA standard based on a resonant method.
- the matching circuit may change at least one of capacitance or reactance of a circuit connected to the coil under the control of the control circuit 102 so that the power transmission circuit 110 and the power reception circuit 160 are impedance-matched to each other. .
- control circuit 102 may control the overall operation (eg, operation for wireless power transmission) of the wireless power transmission apparatus 100 .
- the control circuit 102 may be implemented with various circuits capable of performing operations such as a general-purpose processor such as a CPU, a mini computer, a microprocessor, a micro controlling unit (MCU), and a field programmable gate array (FPGA).
- a general-purpose processor such as a CPU, a mini computer, a microprocessor, a micro controlling unit (MCU), and a field programmable gate array (FPGA).
- MCU micro controlling unit
- FPGA field programmable gate array
- each processor and controller may include processing circuitry.
- control circuit 102 detects foreign substances located on a wireless power transmission path between the wireless power transmitter 100 and the wireless power receiver based on the signal received from the foreign matter detector 120. can be detected.
- the foreign material detection unit 120 may be a circuit for foreign material detection (eg, foreign object detection (FOD)).
- the foreign material detection unit 120 may include a foreign material detection coil 122 and a foreign material detection circuit 124 .
- the foreign material detection coil 122 may receive a signal (eg, alternating current) from the transmission coil unit 116 and transmit the received signal to the foreign material detection circuit 124 .
- the foreign material detection circuit 124 may output a signal received from the foreign material detection coil 122 to the memory 105 .
- the memory 105 may store an output value from the foreign material detection circuit 124 .
- the memory 105 may output a stored signal to the control circuit 102 based on a signal output from the pulse generator 108 (hereinafter referred to as a trigger signal).
- the memory 105 may be implemented in various forms such as read only memory (ROM), random access memory (RAM), or flash memory, and there is no limitation in the form of implementation.
- the memory 105 may include an opto_coupler.
- the memory 105 is configured to input a designated voltage (eg, a voltage that is low enough in advance) so that the outputs of the foreign material detection coil 122 and the foreign material detection circuit 124 are not saturated (eg, : An output value of the foreign matter detection circuit 124 of 220 in FIG. 2 may be acquired and stored.
- the memory 105 may acquire and store an output value of the foreign material detection circuit 124 at a time point 220 when a designated voltage is input. At this time, the output value of the foreign material detection circuit 124 may not change or may hardly change during the time the memory 105 acquires and stores the output value (eg, 10 ⁇ s).
- the memory 105 may transmit the stored output value of the foreign material detection circuit 124 to the control circuit 102 until the next cycle of the trigger signal (eg, 320 in FIG. 4 ).
- the pulse generator 108 may generate a pulse waveform synchronized with a time point at which a designated voltage is input. Referring to FIG. 4 , the pulse generator 108 generates pulses synchronized with designated low voltage points 220 , 220 - 1 and 220 - 2 of the input voltage based on the rectified voltage 210 received from the rectifier 112 . A waveform signal 320 (hereinafter referred to as a trigger signal) may be generated. The pulse generator 108 may output the generated trigger signal 320 to the memory 105 .
- a trigger signal hereinafter referred to as a trigger signal
- the pulse generator 108 at the rectified voltage 210 corresponding to the input voltage, which is an alternating voltage, is a designated low voltage point corresponding to a sufficiently low voltage that does not saturate the foreign matter detection coil 122 and the foreign matter detection circuit 124.
- the trigger signal 320 can be generated and output at (220, 220-1, 220-2).
- the pulse generator 108 Based on the rectified voltage output from the rectifier 112 and applied to the high frequency inverter 114, the pulse generator 108 generates a predetermined time (eg, 10 ⁇ s) from the designated low voltage time points 220, 220-1, and 220-2. ), a trigger signal 320 of a pulse waveform indicating a high signal (eg, a 5V signal) may be generated and output.
- the pulse generator 108 generates a trigger signal 320 indicating a high signal according to the low voltage time points 220, 220-1, and 220-2 at which the rectified voltage 210 corresponding to the AC input voltage is designated. and can be
- control circuit 102 may perform a foreign material detection operation based on an output value provided from the memory 105 .
- the control circuit 102 controls power based on the output value of the foreign material detection circuit 124 provided from the memory 105 until the memory 105 receives the next trigger signal 320 from the pulse generator 108. A foreign substance located on the transmission path can be detected.
- the wireless power transmission device may further include a communication circuit.
- the communication circuit (not shown) may include a plurality of communication circuits (eg, a first communication circuit or a second communication circuit).
- the first communication circuit may communicate with the wireless power receiver 150 based on an in-band communication method using a frequency that is the same as or adjacent to a frequency used by a coil for power transfer, and may perform second communication.
- the circuit may communicate with the wireless power receiver 150 based on an out-of-band communication method using a frequency different from the frequency used by the coil for power transmission.
- the power receiving circuit 160 may receive power wirelessly from the power transmission circuit 110 according to at least one of an inductive method, a resonance method, and an electromagnetic wave method.
- the power receiving circuit 160 may perform power processing of rectifying the power of the received AC waveform into a DC waveform, converting the voltage, or regulating the power.
- the power receiving circuit 160 may include a receiving coil unit 162 (including at least a coil) and a high frequency rectifying unit 164 .
- the power receiving circuit 160 may further include a converting circuit and a matching circuit.
- An induced electromotive force may be generated in the receiving coil unit 162 by a magnetic field whose size changes with time formed around it, and accordingly, the power receiving circuit 160 may receive power wirelessly.
- the high frequency rectifier 164 may rectify the power of the received AC waveform.
- the converting circuit may adjust the voltage of the rectified power and transfer it to a PMIC (not shown). Meanwhile, the converting circuit may be included in the high frequency rectification view 164 .
- the matching circuit changes at least one of the capacitance or reactance of the circuit connected to the coil under the control of a processor (not shown) of the wireless power receiver 150, so that the power transmission circuit 110 and the power reception circuit 160 may be impedance matched to each other.
- a PMIC (not shown) of the wireless power receiver 150 may process the received and processed power to be suitable for hardware (eg, the load 170), and transfer the received and processed power to each hardware.
- the load 170 may include, for example, a battery that stores power received from the wireless power transmitter 100 and may include various hardware that consumes power.
- a processor (not shown) of the wireless power receiver 150 may control the overall operation of the wireless power receiver 150 and generate various messages necessary for wireless power reception to generate a communication circuit (not shown).
- An instruction for performing an operation of the wireless power transmitter 150 may be stored in a memory (not shown).
- the memory (not shown) may be implemented in various forms such as read only memory (ROM), random access memory (RAM), or flash memory, and there is no limitation in the form of implementation.
- the wireless power transmitter 100 and/or the wireless power receiver 150 may include a sensing circuit (not shown).
- the sensing circuit may detect whether or not coupling with other electronic devices (eg, the wireless power transmitter 100 and/or the wireless power receiver 150) is performed using a magnetic field sensor, and the current (or voltage) A sensor may be used to detect the state of the output signal, for example a current level, a voltage level and/or a power level.
- FIG. 5 is a diagram for explaining an operation of outputting a signal corresponding to an output value of a foreign material detection circuit by a memory according to various embodiments of the present disclosure.
- the memory 105 stores the foreign material detection circuit 124 based on the trigger signal 320 indicating a high signal in the non-saturated section of the rectified voltage 210 .
- the output value 520 of ) can be provided to the control circuit 102.
- the memory 105 stores the first output value of the foreign material detection circuit 124 obtained and stored at the first time point 220 according to the trigger signal 320 of the first cycle for the first time period P1 by the control circuit ( 102) can be provided.
- the memory 105 stores the second output value of the foreign material detection circuit 124 acquired and stored at the second time point 220-1 according to the trigger signal 320 of the second cycle for the second time period P2 by the control circuit ( 102) can be provided.
- the memory 105 stores the third output value of the foreign material detection circuit 124 obtained and stored at the third time point 220-2 according to the trigger signal 320 of the third period for the third time period P3 by the control circuit ( 102) can be provided.
- the sizes of the first output value, the second output value, and the third output value are shown differently in FIG. 5, this is only for convenience of explanation, and the technical spirit of the present invention may not be limited thereto.
- control circuit 102 performs a foreign material detection operation based on a first output value during a first time period P1 and performs a foreign material detection operation based on a second output value during a second time period P2. and the foreign matter detection operation may be performed based on the third output value during the third time period P3.
- FIG. 6 is a flowchart for explaining an operation of a wireless power transmission apparatus according to various embodiments.
- the wireless power transmission device 100 may wirelessly transmit power to the second electronic device based on an AC input voltage applied to the power transmission circuit 110.
- the wireless power transmission device 100 via the pulse generator 108, a specified voltage (eg, foreign matter detection coil 122) within a non-saturation period of the rectified voltage corresponding to the input voltage. and a low voltage at which the foreign matter detection circuit 124 is not saturated).
- the first time point may include a time point corresponding to a period in which the output of the foreign matter detection unit 120 (eg, the foreign matter detection coil 122 and/or the foreign matter detection circuit 124) is not saturated.
- the first time point may include a time point corresponding to a designated low voltage section of the input voltage.
- the first point of view may be set by the control circuit 102 or by a user.
- the wireless power transmitter 100 may store the output value of the foreign material detection circuit 124 identified at a first time point in the memory 105 based on the trigger signal.
- the wireless power transmission apparatus 100 performs a foreign matter detection circuit (stored in the memory 105) until a trigger signal of the next cycle is received in the memory 105 from the pulse generator 108.
- the output value of 124) may be continuously provided to the control circuit for a specified time (eg, by maintaining the size of the output value).
- the designated time may be included in the time interval after receiving the trigger signal of the first period from the pulse generator 108 until the trigger signal of the second period following the first period is received in the memory 105 .
- the wireless power transmission apparatus 100 samples the output value of the foreign matter detection circuit 124 identified at the first time, stores it in the memory 105, and maintains the size of the sampled output value for a specified time while maintaining the control circuit. (102) can be provided.
- the control circuit 102 allows the memory 105 to provide an output value of the foreign matter detection circuit 124 to the control circuit 102 based on a trigger signal output from the pulse generator 108. You can control it.
- the wireless power transmitter 100 transmits power between the wireless power transmitter 100 and the wireless power receiver 150 based on the output value of the foreign matter detection circuit obtained for a specified period of time. A foreign substance located on the path can be detected.
- the wireless power transmission device 100 may generate a synchronized trigger signal at a time corresponding to a designated voltage other than a low voltage of a rectified voltage corresponding to an input voltage through the pulse generator 108.
- a time point corresponding to a designated voltage other than the low voltage period may be set by the control circuit 102 or by a user.
- the wireless power transmitter 100 may store in the memory 105 an output value of the foreign material detection circuit 124 identified at a corresponding time point based on a trigger signal synchronized at a time point corresponding to a designated voltage.
- the wireless power transmitter 100 may sample the output value of the foreign matter detection circuit 124 identified at that time and provide it to the control circuit 102 while maintaining the size of the sampled output value.
- 7A and 7B are diagrams for explaining a pulse generator according to various embodiments.
- 8 is a diagram for explaining an operation of outputting a trigger signal by a pulse generator according to various embodiments.
- the pulse generator 108 may include a first element 710, a second element 720, and a third element 730.
- the pulse generator 108 may include a first resistor (R 1 ), a second resistor (R 2 ), a third resistor (R 3 ), and a first capacitor (C 1 ).
- the first element 710 outputs a first signal (eg, 810 in FIG. 8 ) based on the reference voltage VCC (eg, 5V) and the voltage output from the rectifier 112 .
- the first element 710 may be implemented as a comparator.
- the first element 710 compares the voltage output from the reference voltage (VCC) and the rectifier 112 with the voltage divided by the first resistor (R 1 ) and the second resistor (R 2 ), and compares the According to the result, the first signal (V 1 or 810) may be output.
- VCC reference voltage
- R 1 the first resistor
- R 2 the second resistor
- the voltage output from the rectifier 112 is divided by the first resistor (R 1 ) and the second resistor (R 2 ), and the voltage is the reference voltage (VCC or If it is smaller than VX), the first signal (V 1 or 810) having a pulse width indicating a high signal may be output.
- the second element 720 may output the second signal V 2 or 820 based on the reference voltage VCC and the voltage output from the rectifier 112 .
- the second element 720 may be implemented as an inverter.
- the second element 720 receives the voltage divided by the first signal 810 by the third resistor R 3 and the first capacitor C 1 as an input, and receives the second element 720 as an input.
- a signal V 2 or 820 may be output.
- the low voltage (Low) of the second signal 820 may be an input threshold voltage of the third element 730 (eg, an AND gate).
- the third element 730 is based on the first signal (V 1 or 810) and the second signal (V 2 or 820) output from the second element 720 (eg, an inverter).
- the timing signal (VOUT or 320) can be output.
- the third element 730 may be implemented as an AND gate.
- the third element 730 outputs a timing signal (VOUT or 320) indicating a high signal in a period in which both the first signal (V 1 or 810) and the second signal (V 2 or 820) are high signals.
- timing signal VOUT or 320 may have a designated pulse width t1 (eg, 10 ⁇ s) indicating a high signal.
- the pulse width t1 (eg, the pulse width indicating a high signal) of the timing signal VOUT or 320 is changed by adjusting the time constant of the third resistor R 3 and the first capacitor C 1 .
- the generation time (or occurrence time) of the timing signal VOUT or 320 may be a designated time (eg, a low voltage point) during a voltage interval in which the foreign material detection coil 122 and the foreign material detection circuit 124 are not saturated.
- the generation time of the timing signal VOUT or 320 may be changed by adjusting the ratio of the first resistor R 1 and the second resistor R 2 .
- the pulse generator 108 may be implemented in various types of circuits.
- the pulse generator 108 may be implemented with at least one of a digital circuit and an analog circuit.
- the pulse generator 108 may receive the voltage output from the rectifier 112 and output a timing signal VOUT or 320 based on the input voltage.
- 9A and 9B are diagrams for describing a memory according to various embodiments of the present disclosure.
- the memory 105 may include an optocoupler 910 .
- the memory 105 may further include a fourth resistor (R 4 ), a fifth resistor (R 5 ), and a second capacitor (C 2 ).
- the memory 105 may store output values of the foreign material detection circuit 124 (eg, current and voltage values input to the optocoupler 910).
- the memory 105 maintains the size of the stored output value (V 3 ) based on the trigger signal (VOUT), and provides the output value (V 3 ) having the maintained size to the control circuit 102 for a specified time. there is. For example, after the memory 105 receives the trigger signal VOUT indicating the high signal of the first period, the trigger signal VOUT indicating the high signal of the second period following the first period is received by the memory 105 .
- An output value (V 3 ) having a size maintained until it is reached may be provided to the control circuit 102 .
- the memory 105 may output the output value V 3 to the control circuit 102 while maintaining it for a specified time, as shown in FIG. 4 .
- the fourth resistor R 4 may be changed to adjust the current (or the magnitude of the current) input to the optocoupler 910 .
- the time constant of the fifth resistor (R 5 ) and the second capacitor (C 2 ) may be set greater than one cycle (T1) of the input voltage (eg, the rectified signal).
- the time constant of the fifth resistor (R 5 ) and the second capacitor (C 2 ) may be provided to the control circuit 102 while maintaining the magnitude of the output value (V 3 ) stored in the memory or optocoupler 910. can be set large enough to allow
- the time constant of the fifth resistor (R 5 ) and the second capacitor (C 2 ) may be set to be 5 to 10 times greater than one cycle (T1) of the input voltage (eg, the rectified signal).
- the memory 105 may be implemented in various types of circuits.
- the memory 105 may be implemented with at least one of a digital circuit and an analog circuit.
- the memory 105 stores the output value (eg, V 3 ) of the foreign matter detection circuit 124 and maintains the size of the stored output value (eg, V 3 ) according to the timing signal (VOUT or 320) for a specified period of time for control. circuit 102.
- the wireless power transmitter 100 may be implemented the same as or similar to the electronic device 1001 of FIG. 10 to be described later.
- FIG. 10 is a block diagram of an electronic device in a network environment, according to various embodiments.
- an electronic device 1001 communicates with an electronic device 1002 through a first network 1098 (eg, a short-range wireless communication network) or through a second network 1099. It may communicate with at least one of the electronic device 1004 or the server 1008 through (eg, a long-distance wireless communication network). According to an embodiment, the electronic device 1001 may communicate with the electronic device 1004 through the server 1008 .
- a first network 1098 eg, a short-range wireless communication network
- a second network 1099 e.g., a second network 1099. It may communicate with at least one of the electronic device 1004 or the server 1008 through (eg, a long-distance wireless communication network). According to an embodiment, the electronic device 1001 may communicate with the electronic device 1004 through the server 1008 .
- the electronic device 1001 includes a processor 1020, a memory 1030, an input module 1050, an audio output module 1055, a display module 1060, an audio module 1070, a sensor module ( 1076), interface 1077, connection terminal 1078, haptic module 1079, camera module 1080, power management module 1088, battery 1089, communication module 1090, subscriber identification module 1096 , or an antenna module 1097.
- a processor 1020 e.g, a memory 1030, an input module 1050, an audio output module 1055, a display module 1060, an audio module 1070, a sensor module ( 1076), interface 1077, connection terminal 1078, haptic module 1079, camera module 1080, power management module 1088, battery 1089, communication module 1090, subscriber identification module 1096 , or an antenna module 1097.
- at least one of these components eg, the connection terminal 1078
- some of these components eg, sensor module 1076,
- the processor 1020 for example, executes software (eg, the program 1040) to cause at least one other component (eg, hardware or software component) of the electronic device 1001 connected to the processor 1020. It can control and perform various data processing or calculations. According to one embodiment, as at least part of data processing or operation, the processor 1020 transfers instructions or data received from other components (e.g., sensor module 1076 or communication module 1090) to volatile memory 1032. , process commands or data stored in the volatile memory 1032 , and store resultant data in the non-volatile memory 1034 .
- software eg, the program 1040
- the processor 1020 transfers instructions or data received from other components (e.g., sensor module 1076 or communication module 1090) to volatile memory 1032. , process commands or data stored in the volatile memory 1032 , and store resultant data in the non-volatile memory 1034 .
- the processor 1020 may include a main processor 1021 (eg, a central processing unit or an application processor) or a secondary processor 1023 (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 1021 e.g, a central processing unit or an application processor
- a secondary processor 1023 e.g, 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
- NPU neural processing unit
- image signal processor sensor hub processor
- communication processor e.g., a communication processor.
- the auxiliary processor 1023 may use less power than the main processor 1021 or be set to be specialized for a designated function.
- the auxiliary processor 1023 may be implemented separately from or as part of the main processor 1021 .
- the secondary processor 1023 may, for example, take the place of the main processor 1021 while the main processor 1021 is inactive (eg sleep), or the main processor 1021 is active (eg application execution). ) state, together with the main processor 1021, at least one of the components of the electronic device 1001 (eg, the display module 1060, the sensor module 1076, or the communication module 1090) It is possible to control at least some of the related functions or states.
- the auxiliary processor 1023 eg, image signal processor or communication processor
- may be implemented as part of other functionally related components eg, camera module 1080 or communication module 1090). there is.
- the auxiliary processor 1023 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 1001 itself where the artificial intelligence model is performed, or may be performed through a separate server (eg, the server 1008).
- 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 1030 may store various data used by at least one component (eg, the processor 1020 or the sensor module 1076) of the electronic device 1001 .
- the data may include, for example, input data or output data for software (eg, the program 1040) and commands related thereto.
- the memory 1030 may include a volatile memory 1032 or a non-volatile memory 1034 .
- the program 1040 may be stored as software in the memory 1030 and may include, for example, an operating system 1042 , middleware 1044 , or an application 1046 .
- the input module 1050 may receive a command or data to be used for a component (eg, the processor 1020) of the electronic device 1001 from an outside of the electronic device 1001 (eg, a user).
- the input module 1050 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 1055 may output sound signals to the outside of the electronic device 1001 .
- the sound output module 1055 may include, for example, a speaker or 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 1060 may visually provide information to the outside of the electronic device 1001 (eg, a user).
- the display module 1060 may include, for example, a display, a hologram device, or a projector and a control circuit for controlling the device.
- the display module 1060 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 1070 may convert sound into an electrical signal or vice versa. According to an embodiment, the audio module 1070 acquires sound through the input module 1050, the sound output module 1055, or an external electronic device connected directly or wirelessly to the electronic device 1001 (eg: Sound may be output through the electronic device 1002 (eg, a speaker or a headphone).
- the audio module 1070 acquires sound through the input module 1050, the sound output module 1055, or an external electronic device connected directly or wirelessly to the electronic device 1001 (eg: Sound may be output through the electronic device 1002 (eg, a speaker or a headphone).
- the sensor module 1076 detects an operating state (eg, power or temperature) of the electronic device 1001 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 1076 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 IR (infrared) sensor, a biometric sensor, It may include a temperature sensor, humidity sensor, or light sensor.
- the interface 1077 may support one or more designated protocols that may be used to directly or wirelessly connect the electronic device 1001 to an external electronic device (eg, the electronic device 1002).
- the interface 1077 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
- connection terminal 1078 may include a connector through which the electronic device 1001 may be physically connected to an external electronic device (eg, the electronic device 1002).
- the connection terminal 1078 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 1079 may convert electrical signals into mechanical stimuli (eg, vibration or motion) or electrical stimuli that a user can perceive through tactile or kinesthetic senses.
- the haptic module 1079 may include, for example, a motor, a piezoelectric element, or an electrical stimulation device.
- the camera module 1080 may capture still images and moving images. According to one embodiment, the camera module 1080 may include one or more lenses, image sensors, image signal processors, or flashes.
- the power management module 1088 may manage power supplied to the electronic device 1001 .
- the power management module 1088 may be implemented as at least part of a power management integrated circuit (PMIC), for example.
- PMIC power management integrated circuit
- the battery 1089 may supply power to at least one component of the electronic device 1001 .
- the battery 1089 may include, for example, a non-rechargeable primary cell, a rechargeable secondary cell, or a fuel cell.
- the communication module 1090 is a direct (eg, wired) communication channel or a wireless communication channel between the electronic device 1001 and an external electronic device (eg, the electronic device 1002, the electronic device 1004, or the server 1008). Establishment and communication through the established communication channel may be supported.
- the communication module 1090 may include one or more communication processors that operate independently of the processor 1020 (eg, an application processor) and support direct (eg, wired) communication or wireless communication.
- the communication module 1090 may be a wireless communication module 1092 (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 1094 (e.g., : a local area network (LAN) communication module or a power line communication module).
- a wireless communication module 1092 e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module
- GNSS global navigation satellite system
- a wired communication module 1094 e.g., : a local area network (LAN) communication module or a power line communication module.
- the corresponding communication module is a first network 1098 (eg, a short-distance communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network 1099 (eg, legacy It may communicate with the external electronic device 1004 through a cellular network, a 5G network, a next-generation communication network, the Internet, or a telecommunications network such as a computer network (eg, LAN or WAN).
- a first network 1098 eg, a short-distance communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)
- a second network 1099 eg, legacy It may communicate with the external electronic device 1004 through a cellular network, a 5G network, a next-generation communication network, the Internet, or a telecommunications network such as a computer network (eg, LAN or WAN).
- a telecommunications network such as a computer
- the wireless communication module 1092 uses subscriber information (eg, International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module 1096 within a communication network such as the first network 1098 or the second network 1099.
- subscriber information eg, International Mobile Subscriber Identifier (IMSI)
- IMSI International Mobile Subscriber Identifier
- the electronic device 1001 may be identified or authenticated.
- the wireless communication module 1092 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)). -latency communications)) can be supported.
- the wireless communication module 1092 may support a high frequency band (eg, mmWave band) to achieve a high data rate, for example.
- a high frequency band eg, mmWave band
- the wireless communication module 1092 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 1092 may support various requirements defined for the electronic device 1001, an external electronic device (eg, the electronic device 1004), or a network system (eg, the second network 1099).
- the wireless communication module 1092 may include a peak data rate (eg, 20 Gbps or more) for eMBB realization, a loss coverage (eg, 164 dB or less) for mMTC realization, or a U-plane latency (eg, URLLC realization).
- a peak data rate eg, 20 Gbps or more
- a loss coverage eg, 164 dB or less
- a U-plane latency eg, URLLC realization
- DL downlink
- UL uplink
- the antenna module 1097 may transmit or receive signals or power to the outside (eg, an external electronic device).
- the antenna module 1097 may include an antenna including a radiator formed of a conductor or a conductive pattern formed on a substrate (eg, PCB).
- the antenna module 1097 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 1098 or the second network 1099 is selected from the plurality of antennas by, for example, the communication module 1090. can be chosen A signal or power may be transmitted or received between the communication module 1090 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 1097 in addition to the radiator.
- RFIC radio frequency integrated circuit
- the antenna module 1097 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 lower 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 1001 and the external electronic device 1004 through the server 1008 connected to the second network 1099 .
- Each of the external electronic devices 1002 or 1004 may be the same as or different from the electronic device 1001 .
- all or part of operations executed in the electronic device 1001 may be executed in one or more external electronic devices among the external electronic devices 1002 , 1004 , or 1008 .
- the electronic device 1001 when the electronic device 1001 needs to perform a certain function or service automatically or in response to a request from a user or another device, the electronic device 1001 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 1001 .
- the electronic device 1001 may provide the result as at least part of a response to the request as it is or after additional processing.
- cloud computing distributed computing, mobile edge computing (MEC), or client-server computing technology may be used.
- the electronic device 1001 may provide an ultra-low latency service using, for example, distributed computing or mobile edge computing.
- the external electronic device 1004 may include an internet of things (IoT) device.
- Server 1008 may be an intelligent server using machine learning and/or neural networks.
- the external electronic device 1004 or server 1008 may be included in the second network 1099 .
- the electronic device 1001 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 a given component from other corresponding components, and may be used to refer to a given component in another aspect (eg, importance or order) is not limited.
- a (e.g., first) component is said to be “coupled” or “connected” to another (e.g., 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 1036 or external memory 1038
- a machine eg, electronic device 1001
- It may be implemented as software (eg, the program 1040) including them.
- a processor eg, the processor 1020
- a device eg, the electronic device 1001
- 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 (eg compact disc read only memory (CD-ROM)), or through an application store (eg Play Store TM ) or on two user devices ( It can be distributed (eg downloaded or uploaded) online, directly between smart phones.
- a device-readable storage medium eg compact disc read only memory (CD-ROM)
- an application store eg 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 device-readable storage medium 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. .
- each “module” may include a circuit.
- the first electronic device 100 that wirelessly transmits power detects a foreign substance located on a path for wirelessly transmitting power through a power transmission circuit, a memory, a pulse generator, and the power transmission circuit. and a foreign matter detection circuit and a control circuit for transmitting power wirelessly to the second electronic device 150 based on an AC input voltage applied to the power transmission circuit, and A trigger signal synchronized at a first time point corresponding to a designated voltage of the input voltage is generated through a pulse generator, and an output value of the foreign material detection circuit identified at the first time point based on the trigger signal is stored in the memory.
- the output value stored in the memory is continuously acquired from the memory for a specified time period, and the foreign material is detected based on the output value obtained for the specified time period.
- the size of the output value provided through the memory may be maintained for the specified time.
- the designated time may be included in the time from receiving the trigger signal of the first period from the pulse generator until the trigger signal of the second period following the first period is received in the memory.
- the first time point may include a time point corresponding to a period in which the output of the foreign material detection circuit is not saturated.
- the first time point may include a time point corresponding to a designated low voltage section of the input voltage.
- the memory may include an optocoupler and at least one resistor and capacitor.
- time constants of the resistor and the capacitor may be greater than one cycle of the input voltage.
- the trigger signal may include a high signal having a specified pulse width synchronized with the first time point.
- control circuit may be configured to generate the trigger signal at the first time point through the pulse generator.
- control circuit may be configured to control the memory such that the memory provides the output value to the control circuit based on the trigger signal output from the pulse generator.
- a method of operating the first electronic device 100 wirelessly supplies power to the second electronic device (100) based on an AC input voltage applied to a power transmission circuit included in the first electronic device.
- 150 generating a synchronized trigger signal at a first time point corresponding to a designated voltage of the input voltage through a pulse generator included in the first electronic device, and generating the trigger signal based on the trigger signal
- the size of the output value provided through the memory may be maintained for the specified time.
- the designated time may be included in the time from receiving the trigger signal of the first period from the pulse generator until the trigger signal of the second period following the first period is received in the memory.
- the first time point may include a time point corresponding to a period in which the output of the foreign material detection circuit is not saturated.
- the first time point may include a time point corresponding to a designated low voltage section of the input voltage.
- the memory may include an optocoupler and at least one resistor and capacitor.
- time constants of the resistor and the capacitor may be greater than one cycle of the input voltage.
- the trigger signal may include a high signal having a specified pulse width synchronized with the first time point.
- the generating of the trigger signal may include generating the trigger signal at the first time point through the pulse generator.
- the non-transitory recording medium wirelessly transmits power to the second electronic device 150 based on an AC input voltage applied to a power transmission circuit included in the first electronic device 100.
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Abstract
Description
Claims (15)
- 무선으로 전력을 전송하는 제1전자 장치에 있어서,전력 송신 회로;메모리;펄스 발생기;상기 전력 송신 회로를 통해 무선으로 전력을 전송하는 경로 상에 위치하는 이물질을 검출하기 위한 이물질 검출 회로; 및제어 회로를 포함하고, 상기 제어 회로는,상기 전력 송신 회로에 인가되는 교류 형태의 입력 전압에 기반하여, 무선으로 전력을 제2전자 장치로 전송하고,상기 펄스 발생기를 통해, 상기 입력 전압의 지정된 전압에 대응하는 제1시점에 동기화된 트리거 신호를 생성하고,상기 트리거 신호에 기반하여 상기 제1시점에 확인된 상기 이물질 검출 회로의 출력값을 상기 메모리에 저장하고,상기 펄스 발생기로부터 다음 주기의 트리거 신호가 상기 메모리에 수신되기 전까지, 상기 메모리에 저장된 상기 출력값을 지정된 시간동안 계속하여 상기 메모리로부터 획득하고,상기 지정된 시간동안 획득된 상기 출력값에 기반하여 상기 이물질을 검출하도록 설정된 전자 장치.
- 제1항에 있어서,상기 메모리를 통해 제공되는 상기 출력값의 크기는 상기 지정된 시간동안 유지되는 전자 장치.
- 제1항에 있어서,상기 지정된 시간은, 상기 펄스 발생기로부터 제1주기의 트리거 신호를 수신한 후 상기 제1주기 다음의 제2주기의 트리거 신호가 상기 메모리에 수신되기 전까지의 시간에 포함되는 전자 장치.
- 제1항에 있어서,상기 제1시점은, 상기 이물질 검출 회로의 출력이 포화되지 않는 구간에 대응하는 시점을 포함하는 전자 장치.
- 제4항에 있어서,상기 제1시점은, 상기 입력 전압의 지정된 저전압 구간에 대응하는 시점을 포함하는 전자 장치.
- 제1항에 있어서,상기 메모리는, 옵토 커플러 및 적어도 하나의 저항과 커패시터를 포함하는 전자 장치.
- 제6항에 있어서,상기 저항과 커패시터의 시정수는 상기 입력 전압의 일 주기보다 큰 전자 장치.
- 제1항에 있어서,상기 트리거 신호는, 상기 제1시점에 동기화된 지정된 펄스폭의 하이 신호를 포함하는 전자 장치.
- 제1항에 있어서, 상기 제어 회로는,상기 펄스 발생기를 통해, 상기 제1시점에 상기 트리거 신호를 생성하도록 설정된 전자 장치.
- 제1항에 있어서, 상기 제어 회로는,상기 메모리가 상기 펄스 발생기로부터 출력된 상기 트리거 신호에 기반하여 상기 출력값을 상기 제어 회로로 제공하도록, 상기 메모리를 제어하도록 설정된 전자 장치.
- 무선으로 전력을 전송하는 제1전자 장치의 동작 방법에 있어서,상기 제1전자 장치에 포함된 전력 송신 회로에 인가되는 교류 형태의 입력 전압에 기반하여, 무선으로 전력을 제2전자 장치로 전송하는 동작;상기 제1전자 장치에 포함된 펄스 발생기를 통해, 상기 입력 전압의 지정된 전압에 대응하는 제1시점에 동기화된 트리거 신호를 생성하는 동작;상기 트리거 신호에 기반하여 상기 제1시점에 확인된 상기 전자 장치에 포함된 무선으로 전력을 전송하는 경로 상에 위치하는 이물질을 검출하기 위한 이물질 검출 회로의 출력값을 상기 전자 장치에 포함된 메모리에 저장하는 동작;상기 펄스 발생기로부터 다음 주기의 트리거 신호가 상기 메모리에 수신되기 전까지, 상기 메모리에 저장된 상기 출력값을 지정된 시간동안 계속하여 상기 메모리로부터 획득하는 동작; 및상기 지정된 시간동안 획득된 상기 출력값에 기반하여 상기 이물질을 검출하는 동작을 포함하는 전자 장치의 동작 방법.
- 제11항에 있어서,상기 메모리를 통해 제공되는 상기 출력값의 크기는 상기 지정된 시간동안 유지되는 전자 장치의 동작 방법.
- 제11항에 있어서,상기 지정된 시간은, 상기 펄스 발생기로부터 제1주기의 트리거 신호를 수신한 후 상기 제1주기 다음의 제2주기의 트리거 신호가 상기 메모리에 수신되기 전까지의 시간에 포함되는 전자 장치의 동작 방법.
- 제11항에 있어서,상기 제1시점은, 상기 이물질 검출 회로의 출력이 포화되지 않는 구간에 대응하는 시점을 포함하는 전자 장치의 동작 방법.
- 제14항에 있어서,상기 제1시점은, 상기 입력 전압의 지정된 저전압 구간에 대응하는 시점을 포함하는 전자 장치의 동작 방법.
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EP22883949.4A EP4362280A1 (en) | 2021-10-19 | 2022-10-18 | Electronic device for wirelessly transmitting power, and method for operating same |
CN202280069906.1A CN118104100A (zh) | 2021-10-19 | 2022-10-18 | 用于无线发送电力的电子设备及其操作方法 |
US17/969,283 US12074457B2 (en) | 2021-10-19 | 2022-10-19 | Electronic device for wirelessly transmitting power and method of operating the same |
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KR20160143044A (ko) * | 2015-06-04 | 2016-12-14 | 엘지이노텍 주식회사 | 무전전력전송 시스템 및 이의 구동 방법. |
KR20170112389A (ko) * | 2016-03-31 | 2017-10-12 | 삼성전기주식회사 | 무선 전력 송신 장치 및 그의 제어 방법 |
KR101890657B1 (ko) * | 2017-12-28 | 2018-08-23 | (주)그린파워 | 스위칭 손실을 저감하기 위한 무선전력 전송장치의 집전장치, 집전시스템 및 그 제어방법 |
WO2021026466A1 (en) * | 2019-08-07 | 2021-02-11 | Stryker Corporation | Foreign object detection for wireless charging systems |
KR20210032668A (ko) * | 2019-09-17 | 2021-03-25 | 엘지전자 주식회사 | 충전 영역 내 이물질의 검출이 가능한 무선 전력 송신 장치 |
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2021
- 2021-10-19 KR KR1020210139595A patent/KR20230055796A/ko unknown
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KR20160143044A (ko) * | 2015-06-04 | 2016-12-14 | 엘지이노텍 주식회사 | 무전전력전송 시스템 및 이의 구동 방법. |
KR20170112389A (ko) * | 2016-03-31 | 2017-10-12 | 삼성전기주식회사 | 무선 전력 송신 장치 및 그의 제어 방법 |
KR101890657B1 (ko) * | 2017-12-28 | 2018-08-23 | (주)그린파워 | 스위칭 손실을 저감하기 위한 무선전력 전송장치의 집전장치, 집전시스템 및 그 제어방법 |
WO2021026466A1 (en) * | 2019-08-07 | 2021-02-11 | Stryker Corporation | Foreign object detection for wireless charging systems |
KR20210032668A (ko) * | 2019-09-17 | 2021-03-25 | 엘지전자 주식회사 | 충전 영역 내 이물질의 검출이 가능한 무선 전력 송신 장치 |
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