KR20170054976A - Electronic device and method for wireless charging in the electronic device - Google Patents

Abstract

The present invention provides an electronic device capable of simultaneously supporting a function of a transmission unit and a reception unit in one circuit, and a wireless charging method thereof. According to various embodiments of the present invention, the electronic device comprises: a power supply unit to supply direct current (DC) power; a control unit to determine a wireless power transmission or reception mode when at least one electronic device is detected, and to output a control signal corresponding to a wireless power transmission frequency capable of being supported by the detected electronic device among a plurality of wireless power transmission frequencies capable of transmitting power when the wireless power transmission mode is determined; a conversion circuit unit to output the DC power supplied from the power supply unit as alternating current (AC) power in accordance with the control signal outputted from the control unit; and a wireless power transmission/reception unit to transmit the AC power supplied from the conversion circuit unit to a wireless space. Moreover, other embodiments are also possible.

Description

ELECTRONIC DEVICE AND METHOD FOR WIRELESS CHARGING IN THE ELECTRONIC DEVICE [0001]

Various embodiments of the present invention are directed to electronic devices and methods of wireless charging in electronic devices.

BACKGROUND ART A mobile terminal such as a mobile phone or a PDA (Personal Digital Assistants) is driven by a rechargeable battery. In order to charge the battery, a separate charging device is used to supply electric energy to the battery of the mobile terminal. Typically, the charging device and the battery are each provided with a separate contact terminal on the outside thereof, which are in contact with each other to electrically connect the charging device and the battery.

However, in such a contact type charging method, since the contact terminal protrudes to the outside, contamination due to foreign matter is easy, so that the battery is not properly charged. Also, even if the contact terminals are exposed to moisture, charging is not properly performed.

In order to solve these problems, wireless charging or non-contact charging technology has recently been developed and used in many electronic devices.

This wireless charging technique uses wireless power transmission and reception, for example, a system in which a battery can be automatically charged by simply placing a cellular phone on a charging pad without connecting a separate charging connector. It is generally known to the general public as a wireless electric toothbrush or a wireless electric shaver. This wireless charging technology can enhance the waterproof function by charging the electronic products wirelessly, and it has the advantage of increasing the portability of the electronic devices because it does not need the wired charger, and the related technology will be developed even in the era of the coming electric car do.

The wireless charging technique includes an electromagnetic induction method using a coil, a resonance method using resonance, and a radio frequency (RF) / microwave radiation (RF) method of converting electrical energy into microwave.

Currently, electromagnetic induction is the main method. However, in recent years, experiments have been successfully conducted to transmit electric power wirelessly from a distance of several tens of meters using microwaves at home and abroad. In the near future, The world seems to be opened.

The power transmission method by electromagnetic induction is a method of transmitting power between the primary coil and the secondary coil. When a magnet is moved to a coil, an induced current is generated, which generates a magnetic field at the transmitting end and induces a current according to the change of the magnetic field at the receiving end to generate energy. This phenomenon is called magnetic induction phenomenon, and the power transmission method using the phenomenon is excellent in energy transmission efficiency.

In 2005, Professor Soljacic of MIT announced Coupled Mode Theory, a system in which electricity is delivered wirelessly, even at distances of a few meters (m) from the charging device, using resonant power transmission principles. Instead of resonating the sound, the MIT team resonated electromagnetic waves that contained electrical energy. The resonant electrical energy is transmitted directly only when there is a device with a resonant frequency, and unused portions are not re-absorbed into the air, but are reabsorbed into the electromagnetic field. Therefore, unlike other electromagnetic waves, they will not affect the surrounding machine or body .

The wireless charging standard is proposed in the Alliance for Wireless Power (A4WP) using a resonance method, the Wireless Power Consortium (WPC) using an induction method, and the Power Matters Alliance (PMA). When a product conforming to such a variety of standards is released, the user may experience inconvenience in usability and compatibility.

In the induction method, electric current is supplied to the transmission coil by generating a magnetic field by transmitting electric power by using a magnetic field induced in the coil, so that an induction current flows to the adjacent reception coil to supply energy to the load.

However, depending on the various wireless charging methods, the standard and the used frequency may be different. In the same wireless charging method, the frequency used and the standard may be different. Accordingly, in order to support functions according to a plurality of standards in one electronic device, there is a problem that additional arrangements of various devices are required or parallel configurations are required for each standard.

In addition, in an electronic device that provides wireless charging, a circuit or a system constituting a transmitting unit and a receiving unit are different from each other in configuration, and when they are implemented at the same time, there is a problem that a circuit must be formed in parallel or a plurality of circuits must be used.

The various embodiments of the present invention can provide an electronic device capable of simultaneously supporting functions of a transmitter and a receiver in one circuit and a wireless charging method in an electronic device.

In addition, various embodiments of the present invention can provide an electronic device capable of providing a plurality of wireless charging standard schemes in a circuit and a wireless charging method in an electronic device.

According to an aspect of the present invention, there is provided an electronic device including: a power supply unit for supplying DC power; Determining whether a wireless power transmission mode or a wireless power receiving mode is detected when at least one electronic device is sensed and determining a wireless power transmission mode capable of being supported by the sensed electronic device among a plurality of wireless power transmission frequencies, A control unit for outputting a control signal corresponding to a frequency; A conversion circuit for outputting the DC power supplied from the power supply unit as AC power according to the control signal output from the controller; And a wireless power transmission / reception unit for transmitting the AC power supplied from the conversion circuit unit to the wireless space.

According to another aspect of the present invention, there is provided a method of wireless charging in an electronic device, comprising: determining a wireless power transmission mode or a wireless power receiving mode when at least one electronic device is sensed; Determining a wireless power transmission frequency that can be supported by the sensed electronic device among a plurality of wireless power transmission frequencies that can be transmitted when the wireless power transmission mode is determined; Converting DC power into AC power based on a control signal corresponding to the determined radio power transmission frequency; And transmitting the converted AC power to the wireless space.

A wireless charging method in an electronic device and an electronic device according to various embodiments includes a transmitter configured to generate AC power for transmitting wireless charging power and a receiver configured to generate DC power from the received wireless power in one circuit, It is advantageous that the device can be downsized, thinned, and reduced in cost.

In addition, the wireless charging method in the electronic device and the electronic device according to various embodiments may be configured as an integrated coil to support a plurality of standard methods according to a resonance method and an induction method in implementing a coil for transmitting and receiving wireless power, There is an advantage that the wireless charging power according to each standard method can be selectively transmitted according to the control signal.

1 is a block diagram showing the configuration of an electronic device according to various embodiments of the present invention.
2 is a detailed circuit diagram of an electronic device according to various embodiments of the present invention.
3 is a diagram illustrating current flow in a wireless power transmission mode of an electronic device according to various embodiments of the present invention.
4A and 4B are diagrams illustrating the detailed current flow in a wireless power transmission mode of an electronic device according to various embodiments of the present invention.
5 is a diagram showing an output waveform of a control unit according to various embodiments of the present invention.
6 is a diagram showing an output waveform of a wireless power transceiver according to various embodiments of the present invention.
7 is a diagram illustrating current flow in a wireless power receiving mode of an electronic device according to various embodiments of the present invention.
8A and 8B are diagrams illustrating the detailed current flow in a wireless power receiving mode of an electronic device according to various embodiments of the present invention.
9 and 10 are diagrams illustrating wireless charging frequency selection in a wireless power transmission mode of an electronic device according to various embodiments of the present invention.
11 is a diagram showing a detailed circuit configuration example of the conversion circuit according to various embodiments of the present invention.
12 is a diagram showing a detailed circuit configuration example of the conversion circuit according to various embodiments of the present invention.
13 is a diagram showing a detailed circuit configuration example of the conversion circuit according to various embodiments of the present invention.
14 is a diagram showing a detailed circuit configuration example of the conversion circuit according to various embodiments of the present invention.
15A-15E are flow diagrams illustrating a wireless charging procedure in an electronic device according to various embodiments of the present invention.
16 is a block diagram showing a detailed structure of an electronic device according to an embodiment of the present invention.
17 is a block diagram of a program module in accordance with various embodiments of the present invention.

Various embodiments of the invention will now be described with reference to the accompanying drawings. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes various modifications, equivalents, and / or alternatives of the embodiments of the invention. In connection with the description of the drawings, like reference numerals may be used for similar components.

In this document, the expressions "have," "may," "include," or "include" may be used to denote the presence of a feature (eg, a numerical value, a function, Quot ;, and does not exclude the presence of additional features.

In this document, the expressions "A or B," "at least one of A and / or B," or "one or more of A and / or B," etc. may include all possible combinations of the listed items . For example, "A or B," "at least one of A and B," or "at least one of A or B" includes (1) at least one A, (2) Or (3) at least one A and at least one B all together.

Expressions such as " first, "second," first, "or" second, " as used in various embodiments, Not limited. The representations may be used to distinguish one component from another. For example, the first user equipment and the second user equipment may represent different user equipment, regardless of order or importance. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be named as the first component.

(Or functionally or communicatively) coupled with / to "another component (eg, a second component), or a component (eg, a second component) Quot; connected to ", it is to be understood that any such element may be directly connected to the other element or may be connected through another element (e.g., a third element). On the other hand, when it is mentioned that a component (e.g., a first component) is "directly connected" or "directly connected" to another component (e.g., a second component) It can be understood that there is no other component (e.g., a third component) between other components.

As used herein, the phrase " configured to " (or set) to be "adapted to, " To be designed to, "" adapted to, "" made to, "or" capable of ". The term " configured (or set) to "may not necessarily mean " specifically designed to" Instead, in some situations, the expression "configured to" may mean that the device can "do " with other devices or components. For example, a processor configured (or configured) to perform the phrases "A, B, and C" may be a processor dedicated to performing the operation (e.g., an embedded processor), or one or more software programs A generic-purpose processor (e.g., a CPU or an application processor) capable of performing the corresponding operations.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the other embodiments. The singular expressions may include plural expressions unless the context clearly dictates otherwise. All terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by one of ordinary skill in the art. Commonly used predefined terms may be interpreted to have the same or similar meaning as the contextual meanings of the related art and are not to be construed as ideal or overly formal in meaning unless expressly defined in this document . In some cases, the terms defined in this document can not be construed to exclude embodiments of the present invention.

An electronic device in accordance with various embodiments of the present invention can be used in various applications such as, for example, a smartphone, a tablet personal computer, a mobile phone, a videophone, an e-book reader reader, a desktop personal computer, a laptop personal computer, a netbook computer, a workstation, a server, a personal digital assistant (PDA), a portable multimedia player (PMP) , Mobile medical devices, cameras, or wearable devices such as smart glasses, head-mounted-devices (HMD), electronic apparel, electronic bracelets, electronic necklaces, (e. g., apps, e-tat, smart mirror, or smart watch).

In some embodiments, the electronic device may be a smart home appliance. Smart home appliances include, for example, televisions, digital video disk players, audio, refrigerators, air conditioners, vacuum cleaners, ovens, microwaves, washing machines, air cleaners, set- (Such as a home automation control panel, a security control panel, a TV box such as Samsung HomeSync ™, Apple TV ™ or Google TV ™), a game console (eg Xbox ™, PlayStation ™) A dictionary, an electronic key, a camcorder, or an electronic frame.

In an alternative embodiment, the electronic device may be any of a variety of medical devices (e.g., various portable medical measurement devices such as a blood glucose meter, a heart rate meter, a blood pressure meter, or a body temperature meter), magnetic resonance angiography (MRA) A global positioning system receiver, an event data recorder (EDR), a flight data recorder (FDR), an automotive infotainment device, a navigation system, a navigation system, Electronic devices (eg marine navigation devices, gyro compass, etc.), avionics, security devices, head units for vehicles, industrial or home robots, ATMs (automatic teller's machines) point of sale, or internet of things (IoT), such as light bulbs, various sensors, electric or gas meters, sprinkler devices, fire alarms, thermostats, street lights, toasters a heater, a boiler, and the like).

According to some embodiments, the electronic device is a piece of furniture or a part of a building / structure, an electronic board, an electronic signature receiving device, a projector, Water, electricity, gas, or radio wave measuring instruments, etc.). In various embodiments, the electronic device may be a combination of one or more of the various devices described above. An electronic device according to some embodiments may be a flexible electronic device. In addition, the electronic device according to the embodiment of the present invention is not limited to the above-described devices, and may include a new electronic device according to technological advancement.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An electronic apparatus according to various embodiments will now be described with reference to the accompanying drawings. In this document, the term user may refer to a person using an electronic device or a device using an electronic device (e.g., an artificial intelligence electronic device).

1 is a block diagram showing the configuration of an electronic device according to various embodiments of the present invention. 1, an electronic device 100 according to an embodiment of the present invention includes a control unit 110, a conversion circuit unit 120, a wireless power transmission / reception unit 130, a transmission / reception switch 140, frequency control units 151 and 152 A power supply unit 160, a communication unit 170, a sensor unit 180, a voltage conversion unit 191, a charging circuit unit 192, and a battery 193.

According to various embodiments of the present invention, the controller 110 (e.g., a processor) may be configured to determine whether the electronic device 100 is in a wireless power transmission (Tx) mode for transmitting wireless power to another electronic device, Lt; RTI ID = 0.0 > (Rx) < / RTI >

The method for determining the wireless power transmission mode or the wireless power receiving mode may be implemented in various ways. For example, the sensor unit 180 senses a load change through at least one coil configured in the wireless power transmitting / receiving unit 130, thereby determining a wireless power transmission mode or a wireless power receiving mode.

In addition, according to various embodiments of the present invention, the controller 110 determines a wireless power transmission mode or a wireless power reception mode through an in-band signal received through the wireless power transmitter / receiver 130 . In addition, according to various embodiments of the present invention, the controller 110 determines a wireless power transmission mode or a wireless power reception mode by an out-band signal received from another electronic device through the communication unit 170 can do.

In addition, according to various embodiments of the present invention, the control unit 110 may perform a wireless charging method (e.g., an induction method or a resonance method) that can be supported by other electronic devices detected for wireless charging from the in-band signal or the out- Or a wireless charging frequency (for example, 100 to 205 kHz, 100 to 300 kHz, 6.78 MHz, etc.).

A method of determining a wireless charging transmission mode or a wireless charging reception mode in the controller 110 according to various embodiments of the present invention; a method of determining a wireless charging mode (e.g., an induction mode or a resonance mode) Specific examples of the method of determining the frequency (for example, 100 to 205 kHz, 100 to 300 kHz, 6.78 MHz, etc.) will be described later in detail with reference to FIGS. 15A to 15E.

When the controller 110 determines that the wireless charging mode is the charging mode, the control unit 110 controls the transmission / reception switch 140 to switch the connection path of the conversion circuit unit 120 to the voltage conversion unit 191. In the wireless charging and receiving mode, the electronic device 100 receives wireless power through the wireless power transmission / reception unit 130 (for example, the first wireless power transmission / reception unit 131 or the second wireless power transmission / reception unit 132) can do.

The wireless power received through the wireless power transmitting / receiving unit 130 is converted into DC power through the conversion circuit unit 120 as AC power, and the wireless power converted into the DC power (for example, rectified) To the voltage converting unit 191 through the voltage converting unit 191.

The voltage conversion unit 191 may convert the wireless power received through the conversion circuit unit 120 into a predetermined gain. For example, the voltage converting unit 191 may convert the voltage of the received radio power so that the voltage of the output terminal is 5V. The minimum value and the maximum value of the voltage that can be applied to the input terminal of the voltage conversion unit 191 may be set in advance. The voltage may be converted through the voltage conversion unit 191 and then the battery 193 may be charged via the charging circuit unit 192. The charging circuit unit 192 may operate under the control of the controller 110 and the controller 110 may receive various charging related information through the charging circuit unit 192.

Receiving switch 140 so as to switch the connection path of the conversion circuit unit 120 to the power supply unit 160 instead of the voltage conversion unit 191. [ According to the control of the transmission / reception switch 140, the power supply unit 160 can supply DC power to the conversion circuit unit 120. The power supply unit 160 may be supplied with power from a commercial power source and may be supplied with power from the battery 193 or another battery or rechargeable battery included in the electronic device.

The control unit 110 may generate a control signal corresponding to the wireless power transmission frequency to be transmitted to the conversion circuit unit 120 and provide the control signal to the conversion circuit unit 120.

The conversion circuit unit 120 converts the DC power supplied from the power supply unit 160 through the transmission / reception switch 140 into an AC power corresponding to a corresponding frequency or a wireless transmission scheme according to a control signal provided from the controller 110 .

The AC power converted by the conversion circuit unit 120 may be provided to the wireless power transmitting / receiving unit 130. The wireless power transmitting / receiving unit 130 may transmit the charging power to the electronic device to be charged by transmitting the AC power provided from the conversion circuit unit 120 to the wireless space.

In accordance with various embodiments of the present invention, a plurality of wireless charging schemes (e.g., inductive or resonant) or wireless charging frequencies (e.g., 100 to 205 kHz, 100 to 300 kHz, 6.78 MHz, etc.) The electronic device 100 can provide the wireless charging power at the wireless charging mode or the wireless charging frequency by checking the supportable mode of other electronic devices to be charged in the wireless charging transmission mode.

For example, when another electronic device to be charged supports a wireless charging method based on the first frequency, the control unit 110 receives a control signal corresponding to the first frequency through the first frequency control unit 151 , And output the control signal corresponding to the received control signal to the conversion circuit unit 120. In addition, when another electronic device to be charged supports a wireless charging method using a second frequency, the control unit 110 receives a control signal corresponding to the second frequency through the second frequency control unit 152 , And output the control signal corresponding to the received control signal to the conversion circuit unit 120.

In FIG. 1, the first frequency controller 151 and the second frequency controller 152 are shown to support a plurality of wireless charging schemes according to two different frequencies, but the present invention is not limited thereto. For example, the electronic device 100 according to various embodiments of the present invention may include three or more frequency control units. In addition, according to various embodiments of the present invention, the first frequency control unit 151 and the second frequency control unit 152 may include a first wireless charging mode (e.g., inductive mode) control unit and a second wireless charging mode Resonance type) control unit. Also, the first frequency controller 151 and the second frequency controller 152 may be integrated into the controller 110 according to various embodiments of the present invention. In addition, according to various embodiments of the present invention, the first frequency control unit 151 and the second frequency control unit 152 may use the same wireless charging scheme (e.g., induction scheme) And output a corresponding control signal.

The first frequency controller 151 or the second frequency controller 152 may include an oscillator for outputting the corresponding frequency signal. The first frequency control unit 151 or the second frequency control unit 152 may output a signal, data, or information corresponding to the frequency, and may output a clock signal corresponding to the frequency.

The control unit 110 receives a signal corresponding to the frequency or the corresponding wireless charging scheme from the first frequency control unit 151 or the second frequency control unit 152, It is possible to output a control signal capable of controlling the conversion circuit unit 120 so as to generate AC power corresponding to the charging mode. A detailed configuration example of the conversion circuit unit 120 will be described later in detail with reference to FIG. 2 to FIG.

The wireless power transmitting and receiving unit 130 may include a plurality of wireless power transmitting and receiving units 131 and 132 according to a wireless charging scheme or a wireless charging frequency that the electronic device 100 can support. For example, as shown in FIG. 1, the first wireless power transmission / reception unit 131 and the second wireless power transmission / reception unit 132 may be configured to support two wireless charging modes or wireless charging frequencies.

The first wireless power transmission and reception unit 131 may correspond to the first frequency control unit 151 and the second wireless power transmission and reception unit 132 may correspond to the second frequency control unit 152. However, But is not limited thereto.

The first wireless power transmission / reception unit 131 and the second wireless power transmission / reception unit 132 may be independently connected to the conversion circuit unit 120 or may be connected in parallel as shown in FIG. 1, when the first wireless power transmission / reception unit 131 and the second wireless power transmission / reception unit 132 are connected in parallel with the conversion circuit unit 120, the first wireless power transmission / reception unit 131 And the second wireless power transmission / reception unit 132 may constitute a circuit to be isolated from each other at the time of wireless power transmission / reception. A detailed description thereof will be given later in the description of FIG.

For example, the AC power corresponding to the first frequency generated by the conversion circuit unit 120 under the control of the first frequency controller 151 is supplied to the first wireless power transmission / reception unit 131 and the second wireless power transmission / reception unit 132, And may be wirelessly transmitted through the first wireless power transmitting and receiving unit 131 according to the circuit configuration of the first wireless power transmitting and receiving unit 131 and the second wireless power transmitting and receiving unit 132. [ The AC power corresponding to the second frequency generated by the conversion circuit unit 120 under the control of the second frequency controller 152 is supplied to the first wireless power transmission / reception unit 131 and the second wireless power transmission / reception unit 132, And may be wirelessly transmitted through the second wireless power transmission / reception unit 132 according to the circuit configuration of the first wireless power transmission / reception unit 131 and the second wireless power transmission / reception unit 132. [

According to various embodiments of the present invention, all or at least a portion of the controller 110 may be at least part of an application processor (AP) 1610 or a communication processor (CP) 1620 of Figure 16 And may be included in some parts.

In the various embodiments of the present invention, each functional unit or module may mean a functional and structural combination of hardware for performing the technical idea of various embodiments of the present invention and software for driving the hardware. For example, each functional unit or module may refer to a logical unit of a predetermined code and a hardware resource for executing the predetermined code, and may be a code that is physically connected, or a type of hardware Or may be easily deduced to the average expert in the field of the embodiments of the present invention.

An electronic device according to any one of the various embodiments of the present invention includes: a power supply unit for supplying DC power; Determining a wireless power transmission mode or a wireless power receiving mode when at least one electronic device is sensed, determining a wireless power transmission mode that can be supported by the sensed electronic device among a plurality of wireless power transmission frequencies, A control unit for outputting a control signal corresponding to a frequency; A conversion circuit for outputting the DC power supplied from the power supply unit as AC power according to the control signal output from the controller; And a wireless power transmission / reception unit for transmitting the AC power supplied from the conversion circuit unit to the wireless space.

According to various embodiments of the present invention, a control signal may be received from the control unit according to the determination of the wireless power transmission mode or the wireless power reception mode of the control unit, and the connection path of the conversion circuit unit may be connected to the power supply unit Or a transmission / reception switch for switching to a charging circuit section.

According to various embodiments of the present invention, in the wireless power receiving mode, the conversion circuit section may convert the AC power received through the wireless power transmitting / receiving section into DC power.

According to various embodiments of the present invention, the wireless power transmission frequency may include at least one of a frequency corresponding to the resonance system, a frequency corresponding to the induction system, or a frequency corresponding to the radio wave radiation system.

According to various embodiments of the present invention, the conversion circuitry may be implemented as a full-bridge FET circuit using four metal oxide semiconductor field-effect transistors (MOSFETs).

According to various embodiments of the present invention, the conversion circuitry may be implemented as a circuit that includes two metal oxide semiconductor field-effect transistors (MOSFETs) and two diodes.

According to various embodiments of the present invention, the wireless power transceiver may include a plurality of coils corresponding to respective frequencies of the plurality of wireless power transmission frequencies.

According to various embodiments of the present invention, the wireless power transmitting and receiving unit includes: an inductive wireless power transmitting and receiving unit transmitting and receiving wireless power corresponding to an inductive frequency; And a resonance type wireless power transmission / reception unit for transmitting / receiving wireless power corresponding to the frequency of the resonance type.

According to various embodiments of the present invention, the inductive type wireless power transmission / reception unit and the resonance type wireless power transmission / reception unit may be connected in parallel to the conversion circuit unit.

According to various embodiments of the present invention, the inductive type wireless power transmission / reception unit or the resonance type wireless power transmission / reception unit may include a coil and at least one capacitor.

In various embodiments of the present invention, the electronic device 100 may include a smart car. Smart cars can mean automobiles that recognize the inside / outside situation of a car in real time by combining next-generation electric and electronic, information communication, and control technology. Smart cars are also referred to as connected cars. Smart cars can be driven by electric batteries rather than fossil fuels, which can mean electric vehicles. For example, the control unit 110, the conversion circuit unit 120, the wireless power transmission / reception unit 130, the transmission / reception switch 140, the frequency control units 151 and 152, the power supply unit 160, ), The voltage converter 191, the charging circuit 192, and the battery 193 may include an electric vehicle.

The transmission / reception section 130, the transmission / reception switch 140, the frequency control sections 151 and 152, the power supply section 160, and the power supply section 160 in correspondence with the large-capacity power (capacity of several kW to several tens kW) The structure, circuit, and / or size of the sensor unit 180, the voltage conversion unit 191, the charging circuit unit 192, and the battery 193 may be changed.

In accordance with various embodiments of the present invention, the controller 110 (e.g., a processor) may be configured to allow the electronic device 100 (e.g., an electric vehicle) to wirelessly communicate with other electronic devices (e.g., smartphones, tablet PCs, It may be determined whether it is a wireless power transmission mode for transmitting power or a wireless power receiving mode for receiving wireless power from another electronic device (for example, an external wireless charging transmission device).

The smart vehicle 100 determines whether the wireless power transmission mode or the wireless power reception mode is one of the load change of the sensor unit 180, the in-band signal of the wireless power transmitting / receiving unit 130, Can be judged by using. The smart vehicle 100 may further include a wireless charging method (for example, an induction method or a resonance method) supported by another electronic device using the in-band signal of the wireless power transmitting / receiving unit 130 and the outband signal of the communication unit 170 A wireless charging frequency (for example, 100 to 205 kHz, 100 to 300 kHz, 6.78 MHz, etc.).

When the smart car 100 stops or parks near a wireless power transmission device (not shown) of a place (for example, a parking lot, a road, or a charging station) capable of wirelessly transmitting power to the smart car 100, The automobile 100 can determine the wireless power receiving mode using the sensor unit 180, the wireless power transmitting / receiving unit 130, or the communication unit 170. [

Power can be wirelessly transmitted to the smart car 100 using a wireless power transmission pad (not shown) connected to a wireless power transmission device (not shown) installed in a place where wireless power can be transmitted. (Not shown) of a wireless power transmission device (not shown) positioned opposite the bottom surface of the smart car 100 or the side of the smart car 100, Power can be transmitted.

The wireless power transmission device (not shown) may have one or more wireless power transmission pads. One wireless power transmission pad may have a capacity of several kW to several tens kW. Using a plurality of wireless power transmission pads, a wireless power transmission device (not shown) can quickly charge the smart car 100 wirelessly.

The conversion circuit unit 120, the wireless power transmission / reception unit 130, and the transmission / reception switch 140 so as to correspond to reception (or charging) of wireless power of a capacity of several kW to several tens kW. The voltage conversion unit 191, the charging circuit unit 192, and the battery 193 may be changed.

The control unit 110 of the smart vehicle 100 controls the transmission and reception switch 140 to switch the connection path of the conversion circuit unit 120 to the voltage conversion unit 120. [ (191) to connect the conversion circuit section (120) to the voltage conversion section (191).

The smart vehicle 100 as a wireless power receiving mode is connected to a wireless power transmission pad (not shown) through a wireless power transmitting / receiving unit 130 or a second wireless power transmitting / receiving unit 132 corresponding to a resonant mode, Lt; RTI ID = 0.0 > wireless < / RTI >

The power received through the wireless power transmitting / receiving unit 130 is converted (for example, rectified) into AC power through the conversion circuit unit 120 and supplied to the voltage conversion unit 191 via the transmission / reception switch 140 .

The voltage converting unit 191 may convert the wireless power received through the converting circuit unit 120 into a predetermined gain. For example, the voltage converting unit 191 can convert the voltage of the output terminal corresponding to the capacity of several kW to several tens kW. The voltage converted through the voltage converting unit 191 can charge the battery 193 of a large capacity located in the smart car 100 through the post-charging circuit unit 192. The charging circuit unit 192 may operate under the control of the control unit 110 and the control unit 110 may receive various charging related information through the charging circuit unit 192.

It will be easily understood by those skilled in the art that not only a resonance method but also an induction method or an electromagnetic wave method can be applied to the above-described smart vehicle 100 for wireless charging.

In accordance with various embodiments of the present invention, the controller 110 (e.g., a processor) may wirelessly communicate with other electronic devices (e.g., smartphones, tablet PCs, etc.) It is possible to determine the wireless power transmission mode for transmitting the power.

The smart vehicle 100 is connected to the smart vehicle 100 via the sensor unit 180, the wireless power transmitting / receiving unit 130, or the communication unit 170 included in the smart vehicle 100, To a wireless power transmission mode for wirelessly transmitting power to another electronic device (e.g., smart phone, tablet PC, etc.).

The smart vehicle 100 may also be configured to receive the in-band signals of the wireless power transmitting and receiving unit 130 and the outband signals of the communication unit 170, A wireless charging method (e.g., induction method) and a wireless charging frequency (e.g., 100 to 205 kHz, 100 to 300 kHz, 6.78 MHz, etc.) for wirelessly charging the electronic device.

The smart automobile 100 in the wireless power transmission mode is connected to another electronic device (not shown) through the wireless power transmitting / receiving unit 130 or the first wireless power transmitting / receiving unit 132 corresponding to the determined wireless charging mode Wireless power can be transmitted.

The control unit 110 of the smart vehicle 100 may control the transmission / reception switch 140 to connect the conversion circuit unit 120 to the power supply unit 160 in the wireless power transmission mode. The power supply unit 160 may supply DC power to the conversion circuit unit 120. [ The power supply unit 160 may be the battery 193 described above or another battery separately provided in the smart car 100.

The control unit 110 of the smart vehicle 100 generates a control signal corresponding to the wireless power transmission frequency of the wireless charging scheme (e.g., inductive scheme) to the conversion circuit unit 120 and outputs the control signal to the conversion circuit unit 120 ).

The conversion circuit unit 120 may convert the DC power supplied from the power supply unit 160 to AC power corresponding to the wireless charging system and the wireless power transmission frequency according to the control signal received from the controller 110. [ A wireless power transceiver 130 (e.g., a wireless power transmission pad) may transmit AC power provided from the transceiver circuitry 120 to a space to wirelessly transmit power to another electronic device.

It will be readily understood by those skilled in the art that the present invention can be applied not only to the inductive wireless charging of the smart car 100 described above but also to the resonance method or the electromagnetic wave method.

The wireless charging method between the smart car 100 and the external wireless power transmission device (not shown) and the wireless charging method between the smart car 100 and other internal electronic devices (not shown) may be different have. For example, in the wireless power receiving mode between the smart car 100 and an external wireless power transmission device (not shown), the wireless charging method is a resonance method, and the wireless communication between the smart car 100 and other electronic devices The wireless charging scheme may be an induction scheme. The opposite may also be possible.

The first frequency control unit 151 and the second frequency control unit 152 are provided to support a plurality of wireless charging schemes according to different frequencies, but the present invention is not limited thereto. For example, the smart automobile 100 according to various embodiments of the present invention may include three or more frequency control units (e.g., electromagnetic wave method or the like).

The first frequency control unit 151 and the second frequency control unit 152 may include a first wireless charging mode (e.g., inductive mode) control unit and a second wireless charging mode (e.g., a resonance mode) according to various embodiments of the present invention. ) Control unit. The first frequency control unit 151 and the second frequency control unit 152 may be integrated in the control unit 110.

The first wireless power transmission / reception unit 131 and the second wireless power transmission / reception unit 132 may be independently connected to the conversion circuit unit 120 or may be connected in parallel. The first wireless power transmission / reception unit 131 and the second wireless power transmission / reception unit 132 may be implemented in a single housing (not shown) or may be separately implemented in separate housings (not shown).

The first wireless power transmission / reception unit 131 and the second wireless power transmission / reception unit 132 are separately implemented according to various embodiments of the present invention. The first wireless power transmission / reception unit 131 is located outside the smart vehicle, Self resonance from power supply. The wireless power can be received by various wireless charging methods such as a magnetic induction method and an electromagnetic wave method to charge the battery of the smart car. The second wireless power transmitting and receiving unit 132 can charge the electronic devices in the smart car such as the tablet PC and the smart phone with various wireless charging methods provided for the power provided from the battery provided inside the smart car.

Hereinafter, various embodiments of the present invention will be described with reference to FIG. 2 through FIG. 14. FIG.

2 is a detailed circuit diagram of an electronic device according to various embodiments of the present invention. 2, the electronic device 200 includes a control unit 210, a conversion circuit unit 220, a wireless power transmission / reception unit 230, a transmission / reception switch 240, frequency control units 251 and 252 A DC adapter 260, a buck converter 291, a charging circuit unit 292, 2 may correspond to each of the configurations of FIG. 1 described above.

According to various embodiments of the present invention, the controller 210 may be configured to determine whether the electronic device 200 is in a wireless power transmission (Tx) mode for transmitting wireless power to another electronic device, for receiving wireless power from another electronic device It is possible to determine whether it is a wireless power reception (Rx) mode.

The method for determining the wireless power transmission mode or the wireless power receiving mode may be implemented in various ways. For example, it is possible to determine the wireless power transmission mode or the wireless power receiving mode by sensing the load change through at least one coil configured in the wireless power transmitting / receiving unit 230.

In addition, according to various embodiments of the present invention, the controller 210 determines a wireless power transmission mode or a wireless power reception mode through an in-band signal received through the wireless power transmitter-receiver 230 . Also, according to various embodiments of the present invention, the controller 210 may determine a wireless power transmission mode or a wireless power reception mode by an out-band signal received from another electronic device.

In addition, according to various embodiments of the present invention, the control unit 210 may include a wireless charging scheme (e.g., an induction scheme or a resonance scheme) supported by other electronic devices detected for wireless charging from the in-band signal or the out- Or a wireless charging frequency (for example, 100 to 205 kHz, 100 to 300 kHz, 6.78 MHz, etc.).

A method of determining a wireless charging transmission mode or a wireless charging reception mode by the controller 210 according to various embodiments of the present invention; a method of determining a wireless charging mode (e.g., an induction mode or a resonance mode) Specific examples of the method of determining the frequency (for example, 100 to 205 kHz, 100 to 300 kHz, 6.78 MHz, etc.) will be described later in detail with reference to FIGS. 15A to 15E.

Receiving switch 240 to switch the connection path of the conversion circuit unit 220 to the buck converter 291. The buck converter 291 may be connected to the buck converter 291 through the connection path. In the wireless charging and receiving mode, the electronic device 200 is connected to a coil (not shown) of the wireless power transceiver 230 (e.g., the first wireless power transceiver 231 or the second wireless power transceiver 232) (E.g., the first coil 231a or the second coil 232a).

According to various embodiments of the present invention, the first wireless power transmission / reception unit 231 or the second wireless power transmission / reception unit 232 may include at least one coil and at least one capacitor . For example, the first wireless power transmission / reception unit 231 may include a first coil 231a, a first capacitor 231b, and a second capacitor 231c as a wireless power transmission / reception unit supporting an inductive scheme . In addition, the second wireless power transmitting / receiving unit 232 may include a second coil 232a and a third capacitor 232b as a wireless power transmitting / receiving unit supporting a resonance method. In addition, according to various embodiments of the present invention, between the first wireless power transmission / reception unit 231 and the second wireless power transmission / reception unit 232, a fourth capacitor 233a and a fifth A capacitor 233b may be further provided.

As described above, the first wireless power transmission / reception unit 231 and the second wireless power transmission / reception unit 232 may operate isolated from each other according to the operating frequency. For example, the first wireless power transmitting / receiving unit 231 is designed according to a resonant wireless charging scheme using a frequency signal of 6.78 MHz, and the second wireless power transmitting / receiving unit 232 uses a frequency signal of 105 kHz When it is assumed that it is designed according to the induction-mode wireless charging scheme, it can operate isolated from each other during power transmission and reception according to each scheme by the circuit configuration as shown in FIG.

As a more specific example, when the electronic device 200 operates in an inductive manner, a 150 kHz signal may be transmitted / received through the wireless power transmitting / receiving unit 230. If the fourth capacitor 233a and the fifth capacitor 233b formed between the first wireless power transmission / reception unit 231 and the second wireless power transmission / reception unit 232 are designed to have an impedance of 500? Or more, The power transmitting / receiving unit 231 and the second wireless power transmitting / receiving unit 232 may be regarded as circuits which are mutually opened with respect to a transmission signal of 150 kHz.

On the other hand, when the electronic device 200 operates in a resonant mode, a 6.78 MHz signal can be transmitted / received through the wireless power transmitting / receiving unit 230. When the inductance of the first coil 231a of the first wireless power transmitting / receiving unit 231 is, for example, about 7 to 10 μH, the first coil 231a has an impedance of 300 to 400? .

Accordingly, even if the two types of wireless power transmission / reception units are connected in parallel to the conversion circuit unit 220 as shown in FIG. 2, they can be independently transmitted and received according to the circuit design as described above.

The wireless power received through the wireless power transmitting / receiving unit 230 is converted into DC power through the conversion circuit unit 220 as AC power, and the wireless power converted into the DC power (for example, rectified) To the buck converter 291. The buck converter & The conversion circuit 220 is implemented as a full-bridge FET circuit using four metal oxide semiconductor field-effect transistors (MOSFETs) 221, 222, 223 and 224 as shown in FIG. . A concrete operation method of the full-bridge FET circuit constituting the conversion circuit unit 220 will be described later. Also, according to various embodiments of the present invention, the conversion circuit unit 220 may be implemented as a half-bridge type circuit as shown in FIGS. 11 to 14. FIG. In accordance with various embodiments of the present invention, the conversion circuitry 220 may be implemented with any circuit capable of simultaneously providing the circuitry as well as the transmit and receive operations.

The buck converter 291 may convert the wireless power received through the conversion circuit 220 into a predetermined gain. For example, the buck converter 291 may convert the voltage of the received radio power so that the voltage at the output terminal is 5V. According to various embodiments of the present invention, the buck converter 291 may comprise a circuit comprising at least one coil, at least one capacitor, or at least one field effect transistor (FET).

The battery 293 can be charged via the charging circuit 292 with the wireless power whose voltage is converted through the buck converter 291. The charging circuit unit 292 may operate under the control of the controller 210 and the controller 210 may receive various charging related information through the charging circuit unit 292.

Receiving switch 240 so as to switch the connection path of the conversion circuit unit 220 to the DC adapter 260 instead of the buck converter 291. In this case, According to the control of the transmission / reception switch 240, the DC adapter 260 can supply DC power to the conversion circuit unit 220.

The control unit 210 may generate a control signal corresponding to the wireless power transmission frequency to be transmitted to the conversion circuit unit 220 and provide the control signal to the conversion circuit unit 220.

The conversion circuit unit 220 converts the DC power supplied from the DC adapter 260 through the transmission / reception switch 240 into AC power corresponding to the corresponding frequency or the wireless transmission scheme according to the control signal provided from the controller 210 . A concrete operation method of the full-bridge FET circuit constituting the conversion circuit unit 220 will be described later.

The AC power converted by the conversion circuit unit 220 may be provided to the wireless power transmitting / receiving unit 230. The wireless power transmitting / receiving unit 230 may transmit the charging power to the electronic device to be charged by transmitting the AC power provided from the conversion circuit unit 220 to the wireless space.

In accordance with various embodiments of the present invention, a plurality of wireless charging schemes (e.g., inductive or resonant modes) or wireless charging frequencies (e.g., 100 to 205 kHz, 100 to 300 kHz, 6.78 MHz, etc.) The electronic device 200 can provide wireless charging power at the wireless charging mode or the wireless charging frequency by checking the supportable mode of another electronic device to be charged in the wireless charging transmission mode.

For example, when another electronic device to be charged supports a wireless charging scheme based on an induction method (e.g., WPC standard), the control unit 210 controls the WPC controller 251 to transmit a control signal corresponding to the WPC standard And may output the control signal corresponding to the received control signal to the conversion circuit unit 220. When the other electronic device to be charged supports a wireless charging method by a resonance method, the controller 210 controls the frequency of the resonance system (for example, 6.78 MHz) through the resonance frequency oscillator 252, And output a control signal corresponding to the received frequency signal to the conversion circuit unit 220. [

In FIG. 2, the WPC controller 251 and the resonance frequency oscillator 252 are shown to support a plurality of wireless charging schemes according to two different frequencies, but the present invention is not limited thereto. For example, the electronic device 200 according to various embodiments of the present invention may include three or more frequency control units.

The control unit 210 receives the corresponding frequency or a signal corresponding to the wireless charging method from the WPC control unit 251 or the resonance frequency oscillation unit 252 and transmits the signal to the conversion circuit unit 220 It is possible to output a control signal capable of controlling the conversion circuit unit 220 so as to generate a corresponding AC power.

The wireless power transmitting and receiving unit 230 may include a plurality of wireless power transmitting and receiving units 231 and 232 according to a wireless charging scheme or a wireless charging frequency that can be supported by the electronic device 200. For example, as shown in FIG. 2, the first wireless power transmission / reception unit 231 and the second wireless power transmission / reception unit 232 may be configured to support two wireless charging modes or wireless charging frequencies.

The first wireless power transmission / reception unit 231 may correspond to an inductive wireless power transmission / reception, and the second wireless power transmission / reception unit 232 may support a wireless power transmission / reception of a resonant mode. However, .

The first wireless power transmission / reception unit 231 and the second wireless power transmission / reception unit 232 may be independently connected to the conversion circuit unit 220 or may be connected in parallel as shown in FIG. 2, when the first wireless power transmission / reception unit 231 and the second wireless power transmission / reception unit 232 are connected in parallel with the conversion circuit unit 220, the first wireless power The transmission / reception unit 231 and the second wireless power transmission / reception unit 232 may constitute a circuit to be isolated from each other when transmitting and receiving wireless power.

For example, the control unit 210 may control the conversion circuit unit 220 according to a control signal received from the WPC controller 251 to provide the power of the frequency corresponding to the inductive mode to the wireless power transmitting / receiving unit 230 The power corresponding to the inductive method can be transmitted to the other electronic device through the first wireless power transmitting / receiving unit 231 of the wireless power transmitting / receiving unit 230. The control unit 210 may control the conversion circuit unit 220 according to the frequency signal received from the resonance frequency oscillation unit 252 to provide the power of the frequency corresponding to the resonance mode to the wireless power transmission / And may transmit power corresponding to the resonance method to another electronic device through the second wireless power transmitting / receiving unit 232 of the wireless power transmitting / receiving unit 230.

The operation of the wireless power transmission mode in the circuit of Fig. 2 will be described with reference to Figs. 3 to 6, and the operation of the wireless power reception mode in the circuit of Fig. 2 will be described with reference to Figs. 7, 8A and 8B .

3 is a diagram illustrating current flow in a wireless power transmission mode of an electronic device according to various embodiments of the present invention. 3, when the control unit 210 determines the wireless power transmission mode, the conversion circuit unit 220 controls the transmission / reception switch 240 to connect the DC adapter 260 to the DC adapter 260 .

The DC power of the DC adapter 260 may be supplied to the conversion circuit unit 220 through the transmission / reception switch 240, under the control of the transmission / reception switch 240 of the control unit 210. The conversion circuit unit 220 controls the on / off control of at least one of the MOSFETs 221, 222, 223 and 224 according to the control signal of the control unit 210 so that the DC power supplied from the DC adapter 260 is supplied to the corresponding frequency Can be outputted as AC power.

The detailed operation of the conversion circuit unit 220 in the wireless power transmission mode will be described below with reference to FIGS. 4A and 4B.

4A and 4B are diagrams illustrating the detailed current flow in a wireless power transmission mode of an electronic device according to various embodiments of the present invention.

4A, the controller 210 turns on the first MOSFET 221 and the fourth MOSFET 224 to output a positive signal and turns on the second MOSFET 222 and the third MOSFET 224, (223) can be turned off. Under the control of the control unit 210, the DC current supplied as the V _DD voltage is supplied to the first wireless power transmitting / receiving unit 231 through the first MOSFET 221, and the DC power supplied to the first wireless power transmitting / And flows to the fourth MOSFET 224 through the first capacitor 231b, the first coil 231a, and the second capacitor 231c. Accordingly, a positive current flows through the first coil 231a.

4B, the controller 210 turns off the first MOSFET 221 and the fourth MOSFET 224 to output a negative signal and turns off the second MOSFET 222 and the third MOSFET 224, (223) can be turned on. Under the control of the controller 210, the DC current supplied as the V _DD voltage is supplied to the first wireless power transmitter / receiver 231 through the second MOSFET 222, and the DC power supplied to the first wireless power transmitter / receiver 231 And flows to the third MOSFET 223 through the second capacitor 231c, the first coil 231a, and the first capacitor 231a. Accordingly, a negative current flows through the first coil 231a.

In FIGS. 4A and 4B, the AC current flows through the first coil 231a according to the induction method. However, according to the same principle, the AC current can flow through the second coil 232a have.

The control unit 210 controls on / off of the gates of the MOSFETs 221, 222, 223, and 224 constituting the conversion circuit unit 220 as shown in FIGS. 4A and 4B, AC power of a frequency corresponding to each wireless charging system can be supplied to the second coil 232a.

4A and 4B, the number, configuration, and circuits of MOSFETs, coils, and capacitors of the conversion circuit unit 120 of the smart automobile 100 can be changed corresponding to a large capacity (several kW to several tens kW capacities) have.

FIG. 5 is a view showing an output waveform of a control unit according to various embodiments of the present invention, and FIG. 6 is a diagram showing an output waveform of a wireless power transmitting / receiving unit according to various embodiments of the present invention. 5 and 6, when the driving driver waveform of the controller 210 is generated and applied to the gates of the corresponding MOSFETs 221, 222, 223, and 224 as shown in FIG. 5, the respective coils 231a, 232a, an AC power output waveform as shown in FIG. 6 can be generated.

5 and 6, the output waveform of the wireless power transmitting / receiving unit of the smart automobile 100 can be changed so as to correspond to a large capacity (several kW to several tens kW capacity).

Hereinafter, the operation of the wireless power receiving mode in the circuit of Fig. 2 will be described with reference to Figs. 7, 8A, and 8B.

7 is a diagram illustrating current flow in a wireless power receiving mode of an electronic device according to various embodiments of the present invention. Referring to FIG. 7, in the circuit of FIG. 2, when the controller 210 determines the wireless power reception mode, the conversion circuit 220 controls the transmission / reception switch 240 as described above to connect the buck converter 291 .

The conversion circuit 220 converts the AC power received from the wireless power transceiver 230 into DC power and provides the DC power to the buck converter 291. For example, the four MOSFETs 221, 222, 223, and 224 configured in the conversion circuit unit 220 constitute a full active rectifier circuit so that the AC power received through each of the coils 231a and 232a is DC Power conversion.

In FIG. 7, the current flow in the wireless power receiving mode of the smart car 100 may be changed corresponding to a large capacity (several kW to several tens kW capacity).

The detailed operation of the conversion circuit unit 220 in the wireless power reception mode will be described below with reference to FIGS. 8A and 8B.

8A and 8B are diagrams illustrating the detailed current flow in a wireless power receiving mode of an electronic device according to various embodiments of the present invention.

8A, when a current in a positive direction is induced in the first coil 231a, the fourth MOSFET 224, the second capacitor 231c, the first coil 231a, The second MOSFET 231b, and the first MOSFET 221, respectively.

8B, when a current in a negative direction is induced in the first coil 231a, the third MOSFET 223, the first capacitor 231a, the first coil 231a, 2 capacitor 231c, and the second MOSFET 222, respectively.

When the AC current of the first coil 231a is induced, the AC current supplied to the conversion circuit unit 220 is supplied to the four MOSFETs 221, 222, 223, and 224 constituting the conversion circuit unit 220 So that the DC current can be supplied to the transmission / reception switch 240.

8A and 8B illustrate that the induction type AC current is induced in the first coil 231a according to the induction method application. However, according to the same principle, the second coil 232a may have a resonance type So that an alternating current caused by the alternating current can flow.

8A and 8B, the detailed current flow in the wireless power receiving mode of the smart car 100 can be changed corresponding to a large capacity (several kW to several tens kW capacity).

9 and 10 are diagrams illustrating wireless charging frequency selection in a wireless power transmission mode of an electronic device according to various embodiments of the present invention.

9, when the WPC controller 251 is connected to the controller 210 as described above, a control signal corresponding to the induction method according to the WPC standard is provided from the WPC controller 251 in the controller 210 . The control unit 210 controls on / off of the gates of the MOSFETs 221, 222, 223, and 224 of the conversion circuit unit 220 according to a control signal input corresponding to the inductive mode, To the first wireless power transmission / reception unit 231. The first wireless power transmission / The first wireless power transmission / reception unit 231 can wirelessly transmit AC power having a frequency corresponding to the inductive mode to the partner electronic device.

10, when the resonance frequency oscillation unit 252 is connected to the controller 210 as described above, the frequency of the frequency signal corresponding to the resonance system (for example, 6.78 MHz) 252 < / RTI > The control unit 210 controls on / off of the gates of the MOSFETs 221, 222, 223, and 224 of the conversion circuit unit 220 according to a frequency signal input corresponding to the resonance system, To the second wireless power transmission / reception unit 232. The second wireless power transmission / The second wireless power transmission / reception unit 232 may wirelessly transmit AC power having a frequency corresponding to the resonance method to the partner electronic device.

9 and 10, the controller 210 switches the respective frequency controllers for supplying signals corresponding to the two wireless charging systems. However, the selection method and the control signal generating method for a specific wireless charging system Can be implemented in various ways. Although FIGS. 9 and 10 illustrate two wireless charging schemes, three or more wireless charging schemes may be implemented in the same manner.

Hereinafter, various circuit configurations capable of implementing the conversion circuit portion will be described with reference to FIGS. 11 to 14. FIG.

11 is a diagram showing a detailed circuit configuration example of the conversion circuit according to various embodiments of the present invention. Referring to Figure 11, in accordance with various embodiments of the present invention, conversion circuitry 1120 may be implemented with circuitry as shown using two diodes 1121, 1123 and two MOSFETs 1122, 1124 .

According to various embodiments of the present invention, when the electronic device is in the wireless power receiving mode, it can operate in the same manner as the full active rectifier circuit described above. In addition, when the electronic device is in the wireless power transmission mode, the control unit controls the on / off of the gates in the two MOSFETs 1122 and 1124 to output the AC power to the first wireless power transmitting / receiving unit 1130 have.

11, the first wireless power transmission / reception unit 1130 of the induction type is connected to the conversion circuit unit 1130, but the second wireless power transmission / reception unit of the resonance type may be connected in parallel. The first wireless power transmission / reception unit 1130 may include a coil 1131 and capacitors 1132a and 1132b.

12 is a diagram showing a detailed circuit configuration example of the conversion circuit according to various embodiments of the present invention. 12, in accordance with various embodiments of the present invention, conversion circuitry 1220 may be implemented with circuitry as shown using two diodes 1223 and 1224 and two MOSFETs 1221 and 1222 .

According to various embodiments of the present invention, when the electronic device is in the wireless power receiving mode, it can operate in the same manner as the full active rectifier circuit described above. Also, when the electronic device is in the wireless power transmission mode, the control unit controls the on / off of the gates in the two MOSFETs 1221 and 1222 to output the AC power to the first wireless power transmitting / receiving unit 1230 have.

Although the first wireless power transmission / reception unit 1230 of the induction scheme is shown connected to the conversion circuit unit 1230 in FIG. 12, the second wireless power transmission / reception unit of the resonance scheme may be connected in parallel. The first wireless power transmission / reception unit 1230 may include a coil 1231 and capacitors 1232a and 1232b.

13 is a diagram showing a detailed circuit configuration example of the conversion circuit according to various embodiments of the present invention. 13, in accordance with various embodiments of the present invention, conversion circuitry 1320 may be implemented with circuitry as shown using two diodes 1321, 1322 and two MOSFETs 1323, 1324 .

According to various embodiments of the present invention, when the electronic device is in the wireless power receiving mode, it can operate in the same manner as the full active rectifier circuit described above. In addition, when the electronic device is in the wireless power transmission mode, the control unit controls the on / off of the gates in the two MOSFETs 1323 and 1324 to output the AC power to the first wireless power transmitting / receiving unit 1330 have.

13, the inductive first wireless power transmitting / receiving unit 1330 is shown connected to the converting circuit unit 1330, but the second wireless power transmitting / receiving unit having the resonant method may be connected in parallel. The first wireless power transmission / reception unit 1330 may include a coil 1331 and capacitors 1332a and 1332b.

14 is a diagram showing a detailed circuit configuration example of the conversion circuit according to various embodiments of the present invention. 14, conversion circuit 1420 may be implemented with circuitry as shown using two diodes 1422 and 1424 and two MOSFETs 1421 and 1423 in accordance with various embodiments of the present invention .

According to various embodiments of the present invention, when the electronic device is in the wireless power receiving mode, it can operate in the same manner as the full active rectifier circuit described above. Also, when the electronic device is in the wireless power transmission mode, the control unit controls the on / off of the gates in the two MOSFETs 1421 and 1423 to output the AC power to the first wireless power transmitting / receiving unit 1430 have.

14, a first wireless power transmission / reception unit 1330 of an induction type is connected to the conversion circuit unit 1430, but a second wireless power transmission / reception unit of a resonance type may be connected in parallel. The first wireless power transmission / reception unit 1430 may include a coil 1431 and capacitors 1432a and 1432b.

15A-15E are flow diagrams illustrating a wireless charging procedure in an electronic device according to various embodiments of the present invention.

Referring to FIG. 15A, in operation 1520, the control unit of the electronic device can sense power induced in the coil of the wireless power transmitting / receiving unit through the sensor unit. At operation 1504, if a change in load by the external electronic device is detected in response to the coil power detection, at operation 1506, a change in the Vrect value rectified in the conversion circuit portion can be confirmed.

If it is determined in operation 1508 that the wireless power reception mode is selected according to the confirmation of conversion of the Vrect value, in operation 1510, the conversion circuit unit may be switched to a path corresponding to the wireless power reception mode. For example, as described above, the path of the conversion circuit unit 120 may be switched to the voltage conversion unit 191 in FIG.

Depending on the wireless power receiving mode, power is supplied to the charging circuitry at operation 1512 and the battery can be charged with power supplied to the charging circuitry at operation 1514. [

If an external load change is not detected at operation 1504, operation 1516 may determine whether the foreign object is foreign matter. As a result of the determination, if it is determined that the electric power induced in the coil is due to a foreign substance, an error processing operation previously set in operation 1530 may be performed.

As a result of the determination in operation 1516, if it is determined in operation 1518 that the power induced in the coil is not caused by foreign matter, in operation 1520, in-band communication for wireless power transmission can be confirmed.

As a result of the in-band communication check, if it is determined in operation 1522 that the inductive wireless power transmission mode is selected, operation 1524 may switch the inversion circuit portion to a path corresponding to the wireless power transmission mode. For example, as described above, the path of the conversion circuit unit 120 may be switched to the power supply unit 160 in FIG.

In accordance with the determination of the wireless power transmission mode according to the inductive mode, power is supplied to the conversion circuitry at operation 1526 and may operate in an inductive wireless power transmission mode at operation 1528.

If the wireless charging scheme is not confirmed by the in-band communication in operation 1520, out-band communication can be confirmed in operation 1532 of FIG. 15C. As a result of the out-band communication, if it is determined in operation 1534 that the wireless power transmission mode is the resonance mode, the conversion circuit section may be switched to a path corresponding to the wireless power transmission mode in operation 1536. For example, as described above, the path of the conversion circuit unit 120 may be switched to the power supply unit 160 in FIG.

In accordance with the determination of the wireless power transmission mode according to the resonant mode, power can be supplied to the conversion circuitry at operation 1538 and to the wireless power transmission mode of resonant mode at operation 1540.

In operation 1528 of FIG. 15B, in operation of the inductive wireless power transmission mode, in operation 1542 of FIG. 15D, in-band authentication of the counterpart electronic device to be charged can be performed. At operation 1544, an inductive frequency signal may be generated and at operation 1546 a load sensing operation may be performed via the coil of the electronic device.

At operation 1548, if it is determined that an inductive electronic device is present through the coil of the electronic device, at operation 1550, AC power corresponding to the inductive mode is generated at the conversion circuitry, and at operation 1552, ). ≪ / RTI > In operation 1554, it is determined whether or not the battery of the counterpart electronic device is buffered, and the wireless power transmission procedure can be performed until the battery is fully charged.

In operation 1540 of FIG. 15C, when operating in the wireless power transmission mode of the resonance mode, the operation 1556 of FIG. 15E can perform out-band authentication for the partner electronic device to be charged by BLE (bluetooth low energy) have. At operation 1558, a resonant frequency signal may be generated, and at operation 1560 the transmit power may be increased to apply the Vrect voltage.

At operation 1562, it is determined whether a sufficient Vrect voltage is applied to the counterpart electronics, and if sufficient Vrect voltage is applied, at operation 1564 AC power corresponding to the resonant mode is generated at the conversion circuitry, Receiver). ≪ / RTI > In operation 1568, it is determined whether or not the battery of the counterpart electronic device is fully charged, and the wireless power transmission procedure can be performed until the battery is fully charged.

At least one of the operations shown in FIGS. 15A, 15B, 15C, 15D, and 15E may be omitted and at least one other operation may be added between the operations. The operations shown in Figs. 15A, 15B, 15C, 15D, and 15E may be processed in the order shown, and the order of execution of at least one operation may be changed and changed .

A method of wireless charging in an electronic device according to any one of the various embodiments of the present invention includes the steps of determining a wireless power transmission mode or a wireless power receiving mode when at least one electronic device is sensed; Determining a wireless power transmission frequency that can be supported by the sensed electronic device among a plurality of wireless power transmission frequencies that can be transmitted when the wireless power transmission mode is determined; Converting DC power into AC power based on a control signal corresponding to the determined radio power transmission frequency; And transmitting the converted AC power to the wireless space.

According to various embodiments of the present invention, the method may further include sensing power applied to the coil of the electronic device and sensing load variation of the external electronic device from the sensed power.

According to various embodiments of the present invention, if the detected load change of the external electronic device satisfies predetermined conditions, the wireless power receiving mode can be determined.

Converting AC power applied to the coil to DC power, according to various embodiments of the present invention; And charging the battery with the converted direct current power.

According to various embodiments of the present invention, the wireless power transmission frequency may include at least one of a frequency corresponding to the resonance system, a frequency corresponding to the induction system, or a frequency corresponding to the radio wave radiation system.

According to various embodiments of the present invention, the operation of determining the supported wireless power transmission frequency may be determined using in-band communication by a coil for transmitting and receiving wireless power.

According to various embodiments of the present invention, the operation of determining the supported wireless power transmission frequency may be determined using out-band communication by a communication unit that provides near field wireless communication with the sensed electronic device.

According to various embodiments of the present invention, the act of determining the supportable wireless power transmission frequency comprises: determining by using in-band communication by a coil for transmitting and receiving wireless power; And determining if the supported wireless power transmission frequency is not determined through the in-band communication using out-band communication by a communication unit that provides near field wireless communication with the sensed electronic device .

According to various embodiments of the present invention, the operation of determining the supported wireless power transmission frequency comprises: transmitting and receiving signals according to an inductive communication protocol; And transmitting and receiving signals according to the communication protocol of the resonance method.

According to various embodiments of the present invention, the operation of determining the supportable wireless power transmission frequency can simultaneously transmit signals according to the communication protocol of the inductive system and signals according to the communication protocol of the resonance system.

16 is a block diagram 1600 of an electronic device 1601 in accordance with various embodiments. The electronic device 1601 may include all or part of the electronic device 100 shown in Fig. 1, for example. The electronic device 1601 includes at least one application processor (AP) 1610, a communication module 1620, a SIM (subscriber identification module) card 1624, a memory 1630, a sensor module 1640, A display 1660, an interface 1670, an audio module 1680, a camera module 1691, a power management module 1695, a battery 1696, an indicator 1697, and a motor 1698 .

The AP 1610 may control a plurality of hardware or software components connected to the AP 1610 by, for example, operating an operating system or an application program, and may perform various data processing and operations. The AP 1610 may have the same or similar configuration as the control unit 110 of FIG. The AP 1610 may be implemented as a system on chip (SoC), for example. According to one embodiment, the AP 1610 may further include a graphics processing unit (GPU) and / or an image signal processor. The AP 1610 may include at least a portion (e.g., a cellular module 1621) of the components shown in FIG. The AP 1610 loads or processes commands or data received from at least one of the other components (e.g., non-volatile memory) into the volatile memory and stores the various data in the non-volatile memory .

The communication module 1620 includes a cellular module 1621, a WIFI module 1623, a BT module 1625, a GPS module 1627, an NFC module 1628, and a radio frequency (RF) module 1629 ).

The cellular module 1621 may provide a voice call, a video call, a text service, or an Internet service, for example, via a communication network. According to one embodiment, the cellular module 1621 may utilize a subscriber identity module (e.g., SIM card 1624) to perform the identification and authentication of the electronic device 1601 within the communication network. According to one embodiment, the cellular module 1621 may perform at least some of the functions that the AP 1610 may provide. According to one embodiment, the cellular module 1621 may include a communication processor (CP).

Each of the WIFI module 1623, the BT module 1625, the GPS module 1627 or the NFC module 1628 includes a processor for processing data transmitted and received through a corresponding module . At least some (e.g., two or more) of the cellular module 1621, the WIFI module 1623, the BT module 1625, the GPS module 1627, or the NFC module 1628, according to some embodiments, (IC) or an IC package.

The RF module 1629 can, for example, send and receive communication signals (e.g., RF signals). The RF module 1629 may include, for example, a transceiver, a power amplifier module (PAM), a frequency filter, a low noise amplifier (LNA), or an antenna. According to another embodiment, at least one of the cellular module 1621, the WIFI module 1623, the BT module 1625, the GPS module 1627, or the NFC module 1628 transmits and receives RF signals through separate RF modules .

The SIM card 1624 may include, for example, a card containing a subscriber identity module and / or an embedded SIM and may include unique identification information (e.g., an integrated circuit card identifier (ICCID) Subscriber information (e.g., international mobile subscriber identity (IMSI)).

The memory 1630 (e.g., memory 1630) may include, for example, an internal memory 1632 or an external memory 1634. The built-in memory 1632 may be a volatile memory such as a dynamic RAM (RAM), a static RAM (SRAM), or a synchronous dynamic RAM (SDRAM), a non-volatile memory : Programmable ROM (PROM), erasable and programmable ROM (EPROM), electrically erasable and programmable ROM (EEPROM), mask ROM, flash ROM, flash memory (e.g., NAND flash or NOR flash) , A hard drive, or a solid state drive (SSD).

The external memory 1634 may be a flash drive such as a compact flash (CF), a secure digital (SD), a micro secure digital (SD), a mini secure digital (SD) extreme digital), a memory stick, or the like. The external memory 1634 may be functionally and / or physically connected to the electronic device 1601 through various interfaces.

The sensor module 1640 may, for example, measure a physical quantity or sense an operating state of the electronic device 1601 to convert the measured or sensed information into an electrical signal. The sensor module 1640 includes a gesture sensor 1640A, a gyro sensor 1640B, an air pressure sensor 1640C, a magnetic sensor 1640D, an acceleration sensor 1640E, a grip sensor 1640F, A light sensor 1640G, a light sensor 1640K, or a UV sensor 1640G, a color sensor 1640G, a color sensor 1640H, violet sensor 1640M. Additionally or alternatively, the sensor module 1640 may be, for example, an E-nose sensor, an electromyography sensor, an electroencephalogram sensor, an electrocardiogram sensor, an IR infrared sensor, an iris sensor, and / or a fingerprint sensor. The sensor module 1640 may further include a control circuit for controlling at least one sensor included therein. In some embodiments, the electronic device 1601 further includes a processor configured to control the sensor module 1640, either as part of the AP 1610 or separately, such that the AP 1610 is in a sleep state , And the sensor module 1640.

The input device 1650 may include, for example, a touch panel 1652, a (digital) pen sensor 1654, a key 1656, or an ultrasonic input device (1658). The touch panel 1652 may employ, for example, at least one of an electrostatic type, a pressure sensitive type, an infrared type, and an ultrasonic type. In addition, the touch panel 1652 may further include a control circuit. The touch panel 1652 may further include a tactile layer to provide a tactile response to the user.

The (digital) pen sensor 1654 may be, for example, part of a touch panel or may include a separate recognition sheet. The key 1656 may include, for example, a physical button, an optical key, or a keypad. The ultrasonic input device 1658 can sense data by sensing sound waves from the electronic device 1601 to a microphone (e.g., a microphone 1688) through an input tool for generating an ultrasonic signal.

The display 1660 may include a panel 1662, a hologram device 1664, or a projector 1666. The panel 1662 can be embodied, for example, flexible, transparent, or wearable. The panel 1662 may be formed of a single module with the touch panel 1652. The hologram device 1664 can display a stereoscopic image in the air using interference of light. The projector 1666 can display an image by projecting light onto a screen. The screen may be located, for example, inside or outside the electronic device 1601. According to one embodiment, the display 1660 may further include control circuitry for controlling the panel 1662, the hologram device 1664, or the projector 1666.

The interface 1670 may include a high-definition multimedia interface (HDMI) 1672, a universal serial bus (USB) 1674, an optical interface 1676, or a D- subminiature (1678). Additionally or alternatively, the interface 1670 may be a mobile high-definition link (MHL) interface, a secure digital (SD) card / multi-media card (MMC) Standard interface.

The audio module 1680 can convert, for example, sound and electrical signals in both directions. The audio module 1680 may process sound information input or output through, for example, a speaker 1682, a receiver 1684, an earphone 1686, a microphone 1688, or the like.

The camera module 1691 may be, for example, a device capable of capturing a still image and a moving image, and may include at least one image sensor (e.g., a front sensor or a rear sensor), a lens, an image signal processor ), Or a flash (e.g., LED or xenon lamp).

The power management module 1695 can manage the power of the electronic device 1601, for example. According to one embodiment, the power management module 1695 may include a power management integrated circuit (PMIC), a charger integrated circuit (PMIC), or a battery or fuel gauge. The PMIC may have a wired and / or wireless charging scheme. The wireless charging scheme may include, for example, a magnetic resonance scheme, a magnetic induction scheme, or an electromagnetic wave scheme, and may further include an additional circuit for wireless charging, for example, a coil loop, a resonant circuit, have. The battery gauge can measure, for example, the remaining amount of the battery 1696, the voltage during charging, the current, or the temperature. The battery 1696 may include, for example, a rechargeable battery and / or a solar battery.

The indicator 1697 may indicate a specific state of the electronic device 1601 or a portion thereof (e.g., AP 1610), for example, a boot state, a message state, or a charged state. The motor 1698 can convert the electrical signal into mechanical vibration and generate vibration, haptic effects, and the like. Although not shown, the electronic device 1601 may include a processing unit (e.g., a GPU) for mobile TV support. The processing device for supporting the mobile TV can process media data conforming to standards such as digital multimedia broadcasting (DMB), digital video broadcasting (DVB), or media flow.

Each of the above-described components of the electronic device may be composed of one or more components, and the name of the component may be changed according to the type of the electronic device. In various embodiments, the electronic device may be configured to include at least one of the components described above, with some components omitted or further comprising additional other components. In addition, some of the components of the electronic device according to various embodiments may be combined into one entity, so that the functions of the components before being combined can be performed in the same manner.

17 is a block diagram 1700 of a program module 1710 in accordance with various embodiments. According to one embodiment, the program module 1710 may include an operating system (OS) for controlling resources associated with the electronic device and / or various applications (e.g., application programs) running on the operating system have. The operating system may be, for example, android, iOS, windows, symbian, tizen, or bada.

The program module 1710 may include a kernel 1720, middleware 1730, an application programming interface (API) 1760, and / or an application 1770. At least a portion of the program module 1710 may be preloaded on an electronic device or downloaded from a server.

The kernel 1720 may include, for example, a system resource manager 1721 or a device driver 1723. The system resource manager 1721 can perform control, allocation, or recovery of system resources. According to one embodiment, the system resource manager 1721 may include a process management unit, a memory management unit, or a file system management unit. The device driver 1723 may include, for example, a display driver, a camera driver, a Bluetooth driver, a shared memory driver, a USB driver, a keypad driver, a WIFI driver, an audio driver, or an inter- have.

The middleware 1730 may provide the functionality commonly required by the application 1770 or may be provided by the API 1760 to enable the application 1770 to efficiently use limited system resources within the electronic device. To provide various functions to the application 1770. According to one embodiment, the middleware 1730 includes a runtime library 1735, an application manager 1741, a window manager 1742, a multimedia manager 1743, a resource manager 1744, a power manager 1745, a database manager 1746, a package manager 1747, a connectivity manager 1748, a notification manager 1749, a location manager 1750, a graphic manager 1751, or a security manager 1752.

The runtime library 1735 may include, for example, a library module used by the compiler to add new functionality via a programming language while the application 1770 is running. The runtime library 1735 may perform input / output management, memory management, or functions for arithmetic functions.

The application manager 1741 can manage a life cycle of at least one of the applications 1770, for example. The window manager 1742 can manage GUI resources used in the screen. The multimedia manager 1743 can recognize a format required for playing various media files and can encode or decode a media file using a codec suitable for the format. The resource manager 1744 can manage resources such as a source code, a memory, or a storage space of at least one of the applications 1770.

The power manager 1745 operates together with a basic input / output system (BIOS), for example, to manage a battery or a power source, and can provide power information and the like necessary for the operation of the electronic device . The database manager 1746 may create, search, or modify a database to be used in at least one of the applications 1770. The package manager 1747 can manage installation or update of an application distributed in the form of a package file.

The connection manager 1748 may manage wireless connections, such as WIFI or Bluetooth, for example. The notification manager 1749 may display or notify events such as arrival messages, appointments, proximity notifications, etc. in a manner that does not disturb the user. The location manager 1750 may manage location information of the electronic device. The graphic manager 1751 may manage a graphical effect to be provided to the user or a user interface related thereto. The security manager 1752 may provide security functions necessary for system security or user authentication. According to one embodiment, if the electronic device (e.g., the electronic device of FIG. 1) includes a telephone function, the middleware 1730 may include a telephony manager for managing the voice or video call capabilities of the electronic device .

The middleware 1730 may include a middleware module that forms a combination of various functions of the above-described components. The middleware 1730 may provide a module specialized for each type of operating system in order to provide differentiated functions. In addition, the middleware 1730 may dynamically delete some existing components or add new components.

The API 1760 may be provided in a different configuration depending on the operating system, for example, as a set of API programming functions. For example, for Android or iOS, you can provide one API set per platform, and for tizen, you can provide more than two API sets per platform.

The application 1770 may include a home 1771, a dialer 1772, an SMS / MMS 1773, an instant message 1774, a browser 1775, a camera 1776, an alarm 1777 A contact 1778, a voice dial 1779, an email 1780, a calendar 1781, a media player 1782, an album 1783 or a clock 1784, a health care (e.g., Or providing information on the environment (e.g., providing atmospheric pressure, humidity, or temperature information, etc.), and the like.

According to one embodiment, the application 1770 is an application (hereinafter referred to as an "information exchange application") for supporting information exchange between the electronic device (e.g., the electronic device of FIG. 8) . ≪ / RTI > The information exchange application may include, for example, a notification relay application for communicating specific information to the external electronic device, or a device management application for managing the external electronic device .

For example, the notification delivery application may transmit notification information generated by another application (e.g., an SMS / MMS application, an email application, a healthcare application, or an environment information application) of the electronic device to an external electronic device . Further, the notification delivery application can receive notification information from, for example, an external electronic device and provide the notification information to the user. The device management application may, for example, provide at least one function of the external electronic device in communication with the electronic device (e.g., turn-on / turn-off of the external electronic device itself (E.g., install, delete, or update) a service (e.g., a call service or a message service) provided by the external electronic device or an application running on the external electronic device.

According to one embodiment, the application 1770 includes an application (e.g., a healthcare application) designated according to the attributes of the external electronic device (e.g., the type of electronic device as the attribute of the electronic device) . According to one embodiment, the application 1770 may include an application received from an external electronic device. According to one embodiment, the application 1770 may include a preloaded application or a third party application downloadable from a server. The name of the components of the program module 1710 according to the illustrated embodiment may vary depending on the type of the operating system.

According to various embodiments, at least some of the program modules 1710 may be implemented in software, firmware, hardware, or a combination of at least two of them. At least some of the program modules 1710 may be implemented (e.g., executed) by, for example, a processor (e.g., AP 1510). At least some of the program modules 1710 may include, for example, modules, programs, routines, sets of instructions or processes, etc. to perform one or more functions.

The term "module" or "function, " as used herein, may refer to a unit that includes one or a combination of two or more of, for example, hardware, software or firmware. The term "module" or "functional part" is used interchangeably with terms such as, for example, unit, logic, logical block, component, ). A "module" or "function" may be a minimum unit or a part of an integrally constructed component. A "module" may be a minimum unit or a portion thereof that performs one or more functions. "Modules" or "functional parts" may be implemented mechanically or electronically. For example, a "module" or "function" may be an application-specific integrated circuit (ASIC) chip, field-programmable gate arrays (FPGAs) or programmable logic arrays (FPGAs) -logic device).

At least a portion of a device (e.g., modules or functions thereof) or a method (e.g., operations) according to various embodiments may include, for example, computer-readable storage media in the form of program modules, As shown in FIG. When executed by a processor (e.g., the control unit 110), the one or more processors may perform a function corresponding to the instruction. The computer-readable storage medium may be, for example, the storage unit.

The computer readable recording medium may be a hard disk, a floppy disk, a magnetic media (e.g., a magnetic tape), an optical media (e.g., a compact disc read only memory (CD-ROM) but are not limited to, digital versatile discs, magneto-optical media such as floptical discs, hardware devices such as read only memory (ROM), random access memory (RAM) Etc.), etc. The program instructions may also include machine language code such as those produced by a compiler, as well as high-level language code that may be executed by a computer using an interpreter, etc. The above- May be configured to operate as one or more software modules to perform the operations of the various embodiments, and vice versa.

Modules or program modules according to various embodiments may include at least one or more of the elements described above, some of which may be omitted, or may further include additional other elements. Operations performed by modules, program modules, or other components in accordance with various embodiments may be performed in a sequential, parallel, iterative, or heuristic manner. Also, some operations may be performed in a different order, omitted, or other operations may be added.

According to various embodiments, there is provided a storage medium storing instructions which, when executed by at least one processor, cause the at least one processor to be configured to perform at least one operation, Determining a wireless power transmission mode or a wireless power receiving mode when at least one electronic device is sensed; Determining a wireless power transmission frequency that can be supported by the sensed electronic device among a plurality of wireless power transmission frequencies that can be transmitted when the wireless power transmission mode is determined; And generating a control signal corresponding to the determined radio power transmission frequency.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. And the like. Accordingly, the scope of various embodiments of the present invention should be construed as being included in the scope of various embodiments of the present invention without departing from the scope of the present invention, all changes or modifications derived from the technical idea of various embodiments of the present invention .

110: control unit 120: conversion circuit unit
130: wireless power transmission / reception unit 131: first wireless power transmission /
132: second wireless power transmission / reception unit 140: transmission / reception switch
151: first frequency control unit 152: second frequency control unit
160: power supply unit 170:
180: sensor unit 191: voltage conversion unit
192: charging circuit section 193: battery

Claims (20)

A power supply unit for supplying DC power;
Determining a wireless power transmission mode or a wireless power receiving mode when at least one electronic device is sensed, determining a wireless power transmission mode that can be supported by the sensed electronic device among a plurality of wireless power transmission frequencies, A control unit for outputting a control signal corresponding to a frequency;
A conversion circuit for outputting the DC power supplied from the power supply unit as AC power according to the control signal output from the controller; And
And a wireless power transmission / reception unit for transmitting the AC power supplied from the conversion circuit unit to the wireless space. The method according to claim 1,
A transmission / reception switch for receiving a control signal from the control unit according to a determination of the wireless power transmission mode or the wireless power reception mode of the control unit and switching the connection path of the conversion circuit unit to the power supply unit or the charging circuit unit according to the received control signal; ≪ / RTI > The image pickup apparatus according to claim 1,
And converts the AC power received through the wireless power transmitting / receiving unit to DC power in the wireless power receiving mode. 2. The method of claim 1,
A frequency corresponding to the resonance system, a frequency corresponding to the induction system, or a frequency corresponding to the radio wave radiation system. The image pickup apparatus according to claim 1,
The electronic device is implemented as a full-bridge FET circuit using four metal oxide semiconductor field-effect transistors (MOSFETs). The image pickup apparatus according to claim 1,
Wherein the semiconductor device is implemented in a circuit comprising two metal oxide semiconductor field-effect transistors (MOSFETs) and two diodes. The wireless communication system according to claim 1, wherein the wireless power transmitting /
And a plurality of coils corresponding to respective frequencies of the plurality of radio power transmission frequencies. The wireless communication system according to claim 1, wherein the wireless power transmitting /
An inductive wireless power transmission / reception unit for transmitting / receiving wireless power corresponding to a frequency of an inductive system; And
And a resonance-type wireless power transmission / reception section for transmitting / receiving wireless power corresponding to a resonance-type frequency. 9. The method of claim 8,
Wherein the inductive type wireless power transmission / reception unit and the resonance type wireless power transmission / reception unit are connected in parallel to the conversion circuit unit. [9] The apparatus of claim 8, wherein the inductive type wireless power transmitting / receiving unit or the resonant mode wireless power transmitting /
A coil, and at least one capacitor. A method for wireless charging in an electronic device,
Determining a wireless power transmission mode or a wireless power receiving mode when at least one electronic device is sensed;
Determining a wireless power transmission frequency that can be supported by the sensed electronic device among a plurality of wireless power transmission frequencies that can be transmitted when the wireless power transmission mode is determined;
Converting DC power into AC power based on a control signal corresponding to the determined radio power transmission frequency; And
And transmitting the converted AC power to a wireless space. 12. The method of claim 11,
Sensing an electric power applied to the coil of the electronic device, and
And sensing a load change of the external electronic device from the sensed power. 13. The method of claim 12,
And determines that the wireless power reception mode is set when the detected load change of the external electronic device satisfies a predetermined condition. 14. The method of claim 13,
Converting the AC power applied to the coil to DC power; And
And charging the converted direct current power into the battery. 12. The method of claim 11,
A frequency corresponding to the resonance system, a frequency corresponding to the induction system, or a frequency corresponding to the radio wave radiation system. 12. The method of claim 11, wherein determining the supported wireless power transmission frequency comprises:
Using in-band communication by a coil for transmitting and receiving wireless power. 12. The method of claim 11, wherein determining the supported wireless power transmission frequency comprises:
Using out-band communication by a communication unit that provides near field wireless communication with the sensed electronic device. 12. The method of claim 11, wherein determining the supported wireless power transmission frequency comprises:
Using in-band communication by a coil for transmitting and receiving wireless power; And
Band communication by a communication unit that provides short-range wireless communication with the sensed electronic device if the supportable wireless power transmission frequency is not determined through the in-band communication. Way. 12. The method of claim 11, wherein determining the supported wireless power transmission frequency comprises:
Transmitting and receiving a signal according to a communication protocol of an inductive system; And
And transmitting and receiving signals in accordance with the communication protocol of the resonance method. 12. The method of claim 11, wherein determining the supported wireless power transmission frequency comprises:
A signal according to the communication protocol of the inductive system and a signal according to the communication protocol of the resonance system are simultaneously transmitted.

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