WO2022164194A1

WO2022164194A1 - Electronic device for wirelessly transmitting power or wirelessly receiving power, and operating method therefor

Info

Publication number: WO2022164194A1
Application number: PCT/KR2022/001381
Authority: WO
Inventors: 최항석
Original assignee: 삼성전자 주식회사
Priority date: 2021-01-29
Filing date: 2022-01-26
Publication date: 2022-08-04
Also published as: KR20220109850A

Abstract

According to various embodiments, an electronic device comprises: a first coil wound in a first winding direction; a second coil arranged on the inside of the first coil so as to be wound in a second winding direction differing from the first winding direction; and a power conversion circuit connected to the first coil and the second coil to rectify and output a first inductive power induced from the first coil or a second inductive power induced from the second coil, or output charged power to the first coil or the second coil by using a driving power inputted from the outside, wherein the power conversion circuit comprises: a first switch group to which one end of the first coil and one end of the second coil are connected; a second switch group to which the other end of the first coil is connected; and a third switch group to which the other end of the second coil is connected, the first switch group and the second switch group constitute a first full bridge circuit, and the first switch group and the third switch group can constitute a second full bridge circuit. Other various embodiments are possible.

Description

Electronic device for wirelessly transmitting power or wirelessly receiving power, and method for operating the same

Various embodiments relate to an electronic device that wirelessly transmits power or wirelessly receives power, and a method of operating the same.

The use of easily portable electronic devices, such as smart phones, tablet PCs, or wearable devices, is increasing. Since the portable electronic device includes a rechargeable secondary battery, a user can use the electronic device for a specified time even if a separate external power source is not provided. The secondary battery may be recharged in a wired or wireless manner. The wireless power transmission technology is a method of transmitting power using an electromagnetic field induced in a coil. An electronic device generates an electromagnetic field by applying a current to a transmitting coil, and an induced current is formed in a receiving coil by the generated electromagnetic field, power can be transmitted.

The electronic device may support a function of wirelessly transmitting power and/or a function of wirelessly receiving power. In general, a wireless charging system using a magnetic induction method can be interpreted as a structure in which two physically separated devices are connected through a transformer with a relatively small coupling coefficient. Due to the large leakage inductance of the transformer, a resonant converter based on a full bridge may be mainly used instead of a general PWM converter. Such a full-bridge-based wireless charging circuit may operate for inverting in the case of power transmission, and may operate for rectification in the case of power reception. Accordingly, the electronic device may support power transmission and/or power reception.

As described above, the wireless charging system has a relatively low coupling coefficient. When the size and/or shape difference between the transmitting coil included in the electronic device and the receiving coil included in the external electronic device is relatively small, power transmission efficiency may be good, but the size of the transmitting coil and the receiving coil and/or when the difference in shape is relatively large, power transmission efficiency may be reduced. Electronic devices need to wirelessly transmit power for charging external electronic devices of various sizes, for example, from small devices such as wireless earphones to relatively large devices such as smart phones. In order to maintain a good level of power transmission efficiency for external electronic devices of various sizes, the electronic device may include a plurality of transmission coils for external electronic devices of various sizes. However, when a plurality of transmission coils are connected in series, power loss may occur as the resistance thereof increases, thereby reducing efficiency. Alternatively, a parallel connection in a direction in which the inductance between coils is canceled causes a decrease in inductance, and a method of connecting/disconnecting any one coil using a switch may have low efficiency as the coils are connected through a switch.

An electronic device according to various embodiments may include a first coil wound in a first direction and a second coil disposed inside the first coil and wound in a direction opposite to the first direction. The electronic device may include switches constituting a full-bridge circuit corresponding to the first coil and the second coil. In an electronic device and an operating method thereof, according to various embodiments, rectification may be performed by controlling switches corresponding to a first coil when wireless power is received, and when wireless power is transmitted, by controlling switches corresponding to a specific coil. Butting may be performed.

According to various embodiments of the present disclosure, an electronic device may include a first coil wound in a first winding direction, a second coil disposed inside the first coil and wound in a second winding direction different from the first winding direction; It is connected to the first coil and the second coil to rectify and output the first induced power induced from the first coil or the second induced power induced from the second coil, or use driving power input from the outside. and a power conversion circuit configured to output charging power to the first coil or the second coil, wherein the power conversion circuit includes a first switch group to which one end of the first coil and one end of the second coil are connected , A second switch group to which the other end of the first coil is connected, and a third switch group to which the other end of the second coil is connected, wherein the first switch group and the second switch group are a first full bridge circuit , and the first switch group and the third switch group may constitute a second full-bridge circuit.

According to various embodiments, a first coil wound in a first winding direction, a second coil disposed inside the first coil and wound in a second winding direction different from the first winding direction, the first coil, and the It is connected to a second coil and rectifies and outputs the first induction power induced in the first coil or the second induction power induced in the second coil, or by using the driving power input from the outside to the first coil or The method of operating an electronic device including a power conversion circuit configured to output charging power to the second coil may include selecting one of a power reception mode and a power transmission mode, the first coil and the second coil Checking the coil corresponding to the selected mode of operation, checking the switches corresponding to the identified coil among the switches included in the power conversion circuit, and based on the selected mode, corresponding to the identified coil and controlling the on/off state of the switches, and other switches other than the checked switches among the switches included in the power conversion circuit may be maintained in an off state.

According to various embodiments, an electronic device including a first coil wound in a first direction and a second coil disposed inside the first coil and wound in a direction opposite to the first direction may be provided. The electronic device may include switches constituting a full-bridge circuit corresponding to the first coil and the second coil.

According to various embodiments, an electronic device that performs rectification by controlling switches corresponding to a first coil when wireless power is received, and performs inverting by controlling switches corresponding to a specific coil when wireless power is transmitted, and an operation thereof A method may be provided. As both coils are wound in different winding directions, current can be prevented from being applied to unselected switches during commutation or inverting. In addition, various effects directly or indirectly identified through this document may be provided.

1 is a block diagram illustrating an apparatus for transmitting power wirelessly and an electronic device according to various embodiments of the present disclosure;

2A, 2B, and 2C are diagrams of a wireless charging system according to various embodiments.

3A and 3B are diagrams for explaining a comparative example for comparison with various examples.

4 is a view for explaining a comparative example for comparison with various examples.

5 is a diagram illustrating two coils of an electronic device according to various embodiments of the present disclosure;

6A is a view for explaining the configuration of an electronic device and an external electronic device according to various embodiments of the present disclosure;

6B is a diagram for describing a connection relationship between a plurality of coils and a plurality of switches according to various embodiments of the present disclosure;

6C is a diagram for describing a connection relationship between a plurality of coils and a plurality of switches according to various embodiments of the present disclosure;

7A and 7B are diagrams for explaining a switch on/off state in a power reception mode according to various embodiments of the present disclosure;

8 is a flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure;

9 is a flowchart illustrating a method of operating an electronic device according to various embodiments of the present disclosure;

10A, 10B, 10C, and 10D are diagrams for explaining DC-to-AC conversion according to various embodiments.

11 is a waveform diagram of a voltage applied to a coil according to various embodiments of the present disclosure;

12 is a block diagram of an electronic device in a network environment, according to various embodiments.

1 is a block diagram of an electronic device and an external electronic device according to various embodiments of the present disclosure;

Referring to FIG. 1 , an electronic device 101 according to various embodiments may wirelessly transmit power 106 to an external electronic device 103 . Alternatively, the electronic device 101 may wirelessly receive the power 107 from the external electronic device 103 . In one example, the electronic device 101 may transmit the power 106 according to an induction scheme. When the electronic device 101 is inductive, for example, the electronic device 101 is a power source, a DC-AC conversion circuit, an amplifier circuit, an impedance matching circuit, at least one capacitor, at least one coil, or It may include a communication modulation/demodulation circuit. The at least one capacitor may constitute a resonant circuit together with the at least one coil. The electronic device 101 may be implemented in a manner defined in a wireless power consortium (WPC) standard (or Qi standard). In another example, the electronic device 101 may transmit the power 106 according to a resonance method. In the case of the resonance method, the electronic device 101 is, for example, a power source, a DC-AC conversion circuit, an amplifier circuit, an impedance matching circuit, at least one capacitor, at least one coil, or out-of-band communication. It may include a circuit (eg, a Bluetooth low energy (BLE) communication circuit). At least one capacitor and at least one coil may constitute a resonance circuit. The electronic device 101 may be implemented in a manner defined in an air fuel alliance (AFA) standard (or an alliance for wireless power (A4WP) standard). The electronic device 101 may include a coil capable of generating an induced magnetic field when a current flows according to a resonance method or an induction method. A process in which the electronic device 101 generates an induced magnetic field may be expressed as that the electronic device 101 wirelessly transmits power 106 . In addition, in the coil of the electronic device 101 , an induced electromotive force (or current, voltage, and/or power) may be generated by a magnetic field generated around it according to a resonance method or an induction method. A process in which the induced electromotive force is generated through the coil may be expressed as that the electronic device 101 receives the power 107 wirelessly.

The electronic device 101 according to various embodiments may communicate with the external electronic device 103 . For example, the electronic device 101 may communicate with the external electronic device 103 according to an in-band scheme. In the power transmission mode, the electronic device 101 may modulate data to be transmitted according to, for example, a frequency shift keying (FSK) modulation scheme, and the external electronic device 103 may perform an amplitude modulation (ASK) method. shift keying) modulation may be performed according to a modulation method. The electronic device 101 and/or the external electronic device 103 may identify data transmitted from the counterpart device based on the frequency and/or amplitude of the current, voltage, or power of the coil. In the power reception mode, the electronic device 101 may modulate transmission data according to the ASK modulation method, and may demodulate data from the external electronic device 103 based on the FSK demodulation method. The operation of performing modulation based on the ASK modulation method and/or the FSK modulation method may be understood as an operation of transmitting data according to the in-band communication method, and demodulation based on the ASK demodulation method and/or the FSK demodulation method. An operation of performing the ? may be understood as an operation of receiving data according to an in-band communication scheme. For example, the electronic device 101 may communicate with the external electronic device 103 according to an out-of-band scheme. The electronic device 101 or the external electronic device 103 may transmit/receive data using a communication circuit (eg, a BLE communication module) provided separately from the coil. In various embodiments, the electronic device 101 performs communication according to any one of an in-band scheme or an out-of-band scheme, or a communication modulation/demodulation circuit for an in-band scheme according to implementation; and communication circuitry for an out-of-band scheme.

In this document, the electronic device 101 or the external electronic device 103 performing a specific operation refers to various hardware included in the electronic device 101 or the external electronic device 103, for example, a processor (eg, a processor). , it may mean that a control circuit such as a controller and/or a micro controlling unit (MCU) performs a specific operation. Alternatively, when the electronic device 101 or the external electronic device 103 performs a specific operation, it may mean that the processor controls other hardware to perform the specific operation. Alternatively, when the electronic device 101 or the external electronic device 103 performs a specific operation, the specific operation stored in the storage circuit (eg, memory) of the electronic device 101 or the external electronic device 103 is performed. As at least one instruction for execution is executed, it may mean causing a processor or other hardware to perform a specific operation.

2A to 2C are block diagrams of a wireless charging system according to various embodiments.

Referring to FIG. 2A , a wireless charging system according to various embodiments may include an electronic device 101 and a first type external electronic device 103a. The first type of external electronic device 103a may be a charging pad capable of wirelessly transmitting power. Meanwhile, although the first type external electronic device 103a is illustrated as a charging pad in FIG. 2A , there is no limitation as long as it is a device capable of wirelessly transmitting power. For example, the first type external electronic device 103a may include a transmission coil having a size and/or shape set to correspond to a smart phone. The first type of external electronic device 103a may emit electromagnetic waves through a transmission coil. As will be described later in more detail, the electronic device 101 may include two (or more) coils having different sizes. The electronic device 101 may wirelessly receive power by using a coil corresponding to the transmission coil of the first type external electronic device 103a among the two coils. As will be described in more detail later, the electronic device 101 controls the on/off states of switches corresponding to the selected coil (or the coil set by default for power reception), so that AC power output from the selected coil may be rectified. have. For example, when the electronic device 101 determines to operate in the reception mode, the AC power output from the default coil is rectified by controlling on/off states of switches corresponding to the default coil for power reception. can be Alternatively, the electronic device 101 may select one of the two coils, and by controlling on/off states of switches corresponding to the selected coil, AC power output from the selected coil may be rectified. For example, when the electronic device 101 detects the power transmission coil of the first type external electronic device 103a, the electronic device 101 controls the on/off states of switches to alternately operate the plurality of coils, and wireless power reception A coil with high efficiency can be selected. As another example, the electronic device 101 performs communication with the first type external electronic device 103a through an out-of-band method, and controls on/off states of switches to select one coil. can do.

Referring to FIG. 2B , a wireless charging system according to various embodiments may include an electronic device 101 and a second type of external electronic device 103b. The second type of external electronic device 103b may be a smart phone capable of wirelessly receiving power. Meanwhile, in FIG. 2B , the second type of external electronic device 103b is illustrated as a smart phone, but there is no limitation as long as it has a relatively large coil. For example, the second type of external electronic device 103b may include a receiving coil, which is smaller than a receiving coil of a relatively small device (eg, a watch-type wearable electronic device, or a wireless earphone). can have a large size. The electronic device 101 may wirelessly transmit power to the second type external electronic device 103b. As will be described later in more detail, the electronic device 101 may include two (or more) coils having different sizes. The electronic device 101 may wirelessly transmit power by using a coil corresponding to the receiving coil of the second type external electronic device 103b among the two coils. For example, the electronic device 101 may select a coil having a relatively large size among the two coils. As will be described in more detail later, the electronic device 101 converts DC power provided from a battery (or a charger) into AC power by controlling on/off states of switches corresponding to the selected coil to convert the selected coil into AC power. can be provided as For example, when the electronic device 101 determines to operate in the transmission mode, the second type of external electronic device 103b (or the electrical characteristics of the second type of external electronic device 103b) is identified and , a coil can be selected based on the identification result. The identification process of the electronic device 101 will be described later in more detail. The second type of external electronic device 103b may include a display 210 and may also display a battery state 211 .

Referring to FIG. 2C , a wireless charging system according to various embodiments may include an electronic device 101 and a third type external electronic device 103c. The third type of external electronic device 103c may be a watch-type wearable device capable of wirelessly receiving power. Meanwhile, although the third type external electronic device 103c is illustrated as a watch-type wearable device in FIG. 2C , there is no limitation as long as it has a relatively small coil. For example, the third type external electronic device 103c may include a receiving coil, which may have a smaller size than a receiving coil of a relatively large device (eg, a smart phone). The electronic device 101 may wirelessly transmit power to the third type external electronic device 103c. As will be described in more detail later, the electronic device 101 may include two (or more) coils having different sizes. The electronic device 101 may wirelessly transmit power by using a coil corresponding to the receiving coil of the third type external electronic device 103c among the two coils. For example, the electronic device 101 may select a coil having a relatively small size among the two coils. As will be described in more detail later, the electronic device 101 converts DC power provided from a battery (or a charger) into AC power by controlling the on/off states of switches corresponding to the selected coil to convert the selected coil into AC power. can be provided as For example, when the electronic device 101 determines to operate in the transmission mode, the third type external electronic device 103c (or the electrical characteristics of the third type external electronic device 103c) is identified and , a coil can be selected based on the identification result. The third type of external electronic device 103c may include a display 220 and may also display a battery state 221 .

The electronic device 301 according to the comparative example includes a first coil 311 wound in a first direction, and a second coil 312 disposed inside the first coil 312 and wound in the first direction. may include The first coil 311 and the second coil 312 may be connected in series. As the electronic device 301 according to the comparative example includes the first coil 311 and the second coil 312 , the electronic device 301 provides power with relatively high power transmission efficiency over a relatively wide area. can do.

For example, referring to FIG. 3A , an external electronic device 303 such as a smart phone may be disposed on the electronic device 301 according to the comparative example. The external electronic device 303 may include a coil 313 having a relatively large size. The electronic device 101 may apply AC power to the first coil 311 and the second coil 312 . The size and/or shape of the first coil 311 may correspond to the size and/or shape of the coil 313 of the external electronic device 303 , and thus power may be transmitted with relatively high efficiency. .

For example, referring to FIG. 3B , an external electronic device 320 such as a watch-type wearable device may be disposed on the electronic device 301 according to the comparative example. The external electronic device 320 may include a coil 321 having a relatively small size. The electronic device 101 may apply AC power to the first coil 311 and the second coil 312 . The size and/or shape of the second coil 312 may correspond to the size and/or shape of the coil 321 of the external electronic device 320 , and thus power may be transmitted with relatively high efficiency. .

As described above, the electronic device 301 according to the comparative example shown in FIGS. 3A and 3B may transmit power with relatively high efficiency to the external

electronic devices

303 and 320 of various sizes. However, as the first coil 311 and the second coil 312 are connected in series, the resistance value may increase, and thus power loss and heat generation may occur in the coil. Meanwhile, the first coil 331 and the second coil 312 may be implemented as one coil.

The electronic device according to the comparative example may include a first coil 411 disposed inside and a second coil 412 disposed outside the first coil 411 . The electronic device may include the transmission IC 400 , and the transmission IC 400 may apply AC power to at least one of the

coils

411 and 412 through the output terminals AC1 and AC2 . For example, in contrast to the example of FIG. 3 , the first coil 411 and the second coil 412 may be connected to the transmitter IC 400 in parallel, and may be wound in the same direction. The electronic device 101 may include at least one capacitor Cd and Cs. The electronic device may include a switch 413 , and the switch 413 may selectively connect one end Coil_OUT of the second coil 412 to an output terminal AC1 of the transmitting IC 400 .

For example, if it is determined that an external electronic device having a relatively small size is disposed on the electronic device, the electronic device controls the switch 413 to be turned off so that power is applied only to the first coil 411 disposed inside the electronic device. can do. In this case, AC power provided from the transmitting IC 400 may be provided to the first coil 411 , and an external electronic device having a relatively small size may receive power with relatively high efficiency.

For example, if it is determined that an external electronic device having a relatively large size is disposed on the electronic device, the electronic device may control the switch 413 to be turned on. As the switch 413 is controlled to be in the on state, the first coil 411 and the second coil 412 may be connected to the transmitter IC 400 in parallel. Accordingly, power from the transmitting IC 400 may be provided to the second coil 412 as well, and an external electronic device having a relatively large size may receive power based on the electromagnetic field formed in the second coil 412 . can However, due to the connection through the switch 413 , not only the overall efficiency is lowered, but also the inductance of the

coils

411 and 412 is connected in a canceling direction, so the efficiency may be lowered.

5 is a diagram illustrating two coils of an electronic device according to various embodiments of the present disclosure; The embodiment of FIG. 5 will be described with reference to FIG. 6A. 6A is a view for explaining the configuration of an electronic device and an external electronic device according to various embodiments of the present disclosure;

Referring to FIG. 5 , the electronic device 101 according to various embodiments may include a first coil 500 and a second coil 510 . For example, the outer diameter of the first coil 500 may be greater than the outer diameter of the second coil 510 . For example, the inner diameter of the first coil 500 may be the same as or greater than the outer diameter of the second coil 510 , and the second coil 510 may be disposed inside the first coil 500 . Meanwhile, in FIG. 5 , the thickness of the first coil 500 is illustrated as being larger than the thickness of the second coil 510 , but this is only for visually distinguishing the two

coils

500 and 510 , The thicknesses of the

coils

500 and 510 may be the same, or the thickness of the first coil 500 may be greater than the thickness of the second coil 510, or the thickness of the second coil 510 may be the thickness of the first coil ( 500), and there is no limit. The first coil 500 may be wound in a first direction. In addition, the number of turns of the first coil 500 and the second coil 510 is not limited.

According to various embodiments, the first coil 500 may be wound in the first direction. For example, counterclockwise from a first point 501 of the outermost loop of the first coil 500 to a second point 502 of the innermost loop of the first coil 500 . It can be wound and it can be termed the first direction. The second coil 510 may be wound in the second direction. For example, it may be wound clockwise from the third point 511 of the outermost loop of the second coil 510 to the fourth point 512 of the innermost loop of the second coil 510, which Two directions may be named, and the second direction may be a different direction from the first direction. A first point 501 of an outermost loop of the first coil 500 may be connected to the outside through a first connection line 504 . The second point 502 of the innermost loop of the first coil 500 and the third point 511 of the outermost loop of the second coil 510 may be connected to the outside through a second connection line 518 . . The fourth point 512 of the innermost loop of the second coil 510 may be connected to the outside through the third connection line 520 . In FIG. 5 , the second connection line 518 and the third connection line 520 are illustrated as overlapping a part of the first coil 500 in a plan view, but in actual implementation, the second connection line 518 . ) and the third connection line 520 may not come into contact with a portion of the first coil 500 . For example, an insulator may be disposed between the second connecting line 518 and the third connecting line 520 in the illustrated portion such as overlapping a portion of the first coil 500 . For example, the insulator may be disposed between at least a portion of the first coil 500 and at least a portion of the second coil 510 . In another example, the second connection line 518 and the third connection line 520 may be disposed on a different layer than a portion of the first coil 500 . For example, a plurality of disposable layers (eg, a plurality of layers formed on both sides of the substrate) may be formed on one substrate using a via formed in a substrate (eg, FPCB, or PCB). Alternatively, the first coil 500 , the second coil 510 , and the

connection lines

510 , 520 , and 530 may be divided and disposed in a plurality of layers formed on the substrate. There is no limitation on the insulation method of the part expressed as overlapping in the plan view.

As shown in FIG. 5 , as the winding direction of the first coil 500 and the winding direction of the second coil 510 are different, the dot convention as in FIG. 6A may be set. Referring to FIG. 6A , according to various embodiments, the electronic device 101 may include a first coil 600 and a second coil 610 , and the external electronic device 103 may include a coil 655 . may include The first coil 600 in FIG. 6A may correspond to, for example, the first coil 500 in FIG. 5 , and the first point 601 of the first coil 600 is the first coil in FIG. 5 . It may correspond to the first point 501 of the coil 500 , and the second point 602 of the first coil 600 corresponds to the second point 502 of the first coil 500 in FIG. 5 . can be The second coil 610 in FIG. 6A may correspond to, for example, the second coil 510 in FIG. 5 , and the third point 611 of the second coil 610 is the second coil 610 in FIG. 5 . It may correspond to the third point 511 of the coil 510 , and the fourth point 612 of the second coil 610 corresponds to the fourth point 512 of the second coil 510 in FIG. 5 . can be For example, referring to the example shown in FIG. 5 , when the current flows from the second point 502 to the first point 501 , the current may flow in a clockwise direction, and from the third point 511 to the fourth point 511 . Even when the current flows to the point 512 , the current may flow in a clockwise direction. That is, a magnetic field may be formed in the same direction when a current flows from the second point 502 to the first point 501 and when a current flows from the third point 511 to the fourth point 512 . Accordingly, with respect to the first coil 600 in FIG. 6A , a dot according to the dot convention may be set on the side of the second point 602 , and with respect to the second coil 610 , the third point 611 . The dot according to the dot convention can be set on the side. As the

coils

600 and 610 are arranged so that the dot convention as described above is set, current may not flow in a path in which a switch that is not selected during wireless power transmission or wireless power reception exists. to be described later. Meanwhile, those skilled in the art will understand that the winding direction and arrangement of the

coils

500 and 510 in FIG. 5 are merely exemplary, and if the

coils

600 and 610 satisfy the dot convention as in FIG. 6A, the winding direction and arrangement are not limited. .

According to various embodiments, the electronic device 101 includes a plurality of switches S1 , S2 , S3 , S4 , S3B and S4B ,

capacitors

631 , 632 , 641 , 643 , a regulator 642 , a charger 644 , and a system 645 . , a battery 646 , or a controller 647 . The external electronic device 103 may include at least one of a power source 651 , a plurality of switches Q1 , Q2 , Q3 , Q4 , a capacitor 654 , a coil 655 , or a controller 656 . have. The first switch S1 and the second switch S2 may be referred to as a first switch group, and the third switch S3 and the fourth switch S4 may be referred to as a second switch group, and a fifth The switch S3B and the sixth switch S4B may be referred to as a third switch group.

According to various embodiments, the second point 602 of the first coil 600 and the third point 611 of the second coil 610 may be connected to the first switch group. More specifically, a second point 602 of the first coil 600 and a third point 611 of the second coil 610 may be connected to a node 619 , and the node 619 may be connected to a capacitor 631 . can be connected to one end of The other end of the capacitor 631 may be connected to the connection point 633 of the first switch S1 and the second switch S2 of the first switch group. In addition, the other end of the capacitor 631 may be connected to one end of the capacitor 632 . As described above, the second point 602 of the first coil 600 and the third point 611 of the second coil 610 are connected to the first switch group through an intervening element (eg, the capacitor 631). may be connected, but it will be understood by those skilled in the art that "connection" in this document may mean both a direct connection or a connection through an intervening element. A first point 601 of the first coil 600 may be connected to the second switch group. More specifically, the first point 601 may be connected to the connection point 605 of the third switch S3 and the fourth switch S4 of the second switch group through the connection line 604 . A fourth point 612 of the second coil 610 may be connected to the third switch group. In more detail, the fourth point 612 may be connected to the connection point 621 of the fifth switch S3B and the sixth switch S4B of the third switch group through the connection line 620 . According to the above-described connection relationship, the first switch group and the second switch group, that is, the first switch S1 , the second switch S2 , the third switch S3 and the fourth switch S4 are full bridges. bridge) circuit can be constructed. The first switch S1 , the second switch S2 , the third switch S3 , and the fourth switch S4 may be referred to as switches corresponding to the first coil 600 . The first switch group and the third switch group, that is, the first switch S1 , the second switch S2 , the fifth switch S3B and the sixth switch S4B may constitute a full bridge circuit. The first switch S1 , the second switch S2 , the fifth switch S3B and the sixth switch S4B may be referred to as switches corresponding to the second coil 610 . In addition, the plurality of switches (S1, S2, S3, S4, S3B, S4B) may be called a power conversion circuit for convenience, and the power conversion circuit converts DC power into AC power, or rectifies AC power. have.

A capacitor 641 and a regulator 642 may be connected to the power conversion circuit according to various embodiments. One end of the capacitor 641 may be grounded. The regulator 642 may perform converting (eg, buck converting and/or boost converting) and/or regulating the voltage of the rectified power output from the power conversion circuit in the power reception mode. In the power transmission mode, the regulator 642 may bypass DC power provided from the charger 644 and provide it to the power conversion circuit. Depending on the implementation, the regulator 642 may be referred to as a DC/DC converter and may not be included in the electronic device 101 .

According to various embodiments, the charger 644 may charge the battery 646 using power provided from the regulator 642 in the power reception mode. Depending on the charging mode (eg, CC mode, CV mode, or fast charging mode) of the battery 646 , the charger 644 may control the magnitude of the voltage and/or current of the received power. In the power transmission mode, the charger 644 may control the magnitude of the voltage and/or current of the DC power provided from the battery 646 and provide it to the regulator 642 , and as described above, the regulator 642 is The received power may be bypassed and provided to the power conversion circuit. The system 645 may refer to a component in the electronic device 101 that operates using power provided from the charger 644 . When the system 645 provides usable power, the charger 644 may be termed a power management integrated circuit (PMIC), or the electronic device 101 may further include a PMIC distinct from the charger 644 . may be

According to various embodiments, the controller 647 may control on/off states of the plurality of switches S1 , S2 , S3 , S4 , S3B and S4B. The controller 647 receives signals S1_DRV, S2_DRV, S3_DRV, S4_DRV, S3B_DRV, and S4B_DRV for controlling each of the plurality of switches S1, S2, S3, S4, S3B, and S4B in an on state, the plurality of switches It can be applied to the gates of the ones S1, S2, S3, S4, S3B, and S4B. Meanwhile, the controller 647 maintains the switch off state by not controlling the signals S1_DRV, S2_DRV, S3_DRV, S4_DRV, S3B_DRV, and S4B_DRV. Also, it can be expressed that the controller 647 controls the switch to the off state. have. If the plurality of switches S1, S2, S3, S4, S3B, and S4B are implemented to be controlled to an off state when a gate voltage is applied, and to be controlled to an on state when a gate voltage is not applied, , when the controller 647 controls the on/off states of the plurality of switches S1, S2, S3, S4, S3B, and S4B, an operation of applying a gate voltage and/or an operation of refraining from applying a gate voltage may include

According to various embodiments, in the power reception mode, the controller 647 may control on/off states of switches corresponding to coils for power reception to perform rectification. For example, when the first coil 600 is a default set coil for power reception, the controller 647 may turn on each of the switches S1 , S2 , S3 , S4 corresponding to the first coil 600 . By controlling the /off state, AC power output from the first coil 600 may be rectified. Control of the on/off state of each of the switches S1, S2, S3, and S4 for rectification will be described with reference to FIGS. 7A and 7B. In another example, the controller 647 may select a coil for power reception. For example, either the first coil 600 or the second coil 610 may have relatively high efficiency according to the size and/or shape of the coil 655 of the external electronic device 103 . Rectification may be performed by the controller 647 selecting one of the

coils

600 and 610 as a coil for power reception and controlling on/off states of switches corresponding to the selected coil. For example, the electronic device 101 may receive information associated with the external electronic device 103 and select a coil for power reception based thereon. Alternatively, the electronic device 101 may select a coil to which a larger voltage is applied among the

coils

600 and 610 . Alternatively, the electronic device 101 may select a coil based on a user input.

According to various embodiments, in the power transmission mode, the controller 647 converts DC power provided from the charger 644 into AC power by controlling on/off states of switches corresponding to coils for power transmission. can If the first coil 600 is selected as a coil for power transmission, the controller 647 determines the on/off state of the switches S1 , S2 , S3 , and S4 corresponding to the first coil 600 . By controlling, DC power may be converted into AC power and applied to the first coil 600 . If the second coil 610 is selected as a coil for power transmission, the controller 647 determines the on/off state of the switches S1 , S2 , S3B and S4B corresponding to the second coil 610 . By controlling, DC power may be converted into AC power and applied to the second coil 610 .

According to various embodiments, DC power provided from the power source 651 of the external electronic device 103 may be converted into AC power by the switches Q1, Q2, Q3, and Q4 constituting the full-bridge circuit. have. One end of the coil 655 may be connected to a connection point 652 of the switches Q1 and Q2 through a capacitor 654 , and the other end of the coil 655 may be connected to a connection point 653 of the switches Q3 and Q4 . ) can be connected to The converted AC power may be applied to the coil 655 . The controller 656 may control the on/off states of the switches Q1 , Q2 , Q3 , and Q4 so that DC power provided from the power source 651 is converted into AC power in the power transmission mode. The controller 647 and the controller 656 may communicate with each other. For example, the controller 647 may identify data expressed by the external electronic device 103 based on a demodulation result from a modulation/demodulation circuit (not shown) for in-band communication. For example, the controller 647 controls a modulation/demodulation circuit (not shown) for in-band communication, thereby alternating current applied to a coil (eg, the first coil 600 and/or the second coil 610 ). The frequency according to the FSK method of the waveform may be changed, and data may be transmitted accordingly. For example, the controller 647 may communicate with the external electronic device 103 using a communication circuit (not shown) for out-band communication.

Meanwhile, for example, a relatively small voltage may be applied to the second coil 610 . Accordingly, the switches S3B and 34B corresponding only to the second coil 610 may be implemented as switches having a relatively low withstand voltage. Also, in the power conversion circuit according to various embodiments, gate driving may be possible only with a simple bootstrap circuit without a charge pump for gate driving.

According to various embodiments, the first coil 600a and the second coil 610a of the first type may be connected to the switches S1, S2, S3, S4, S3B, and S4B. The arrangement of the first coil 600a and the second coil 610a of the first type and/or the connection relation with the outside may be, for example, the arrangement of the

coils

500 and 510 of FIG. 5 and/or the connection relation with the outside. may be substantially the same as One end 601a of the first coil 600a and one end 611a of the second coil 600a may be connected to the switch groups S1 and S2. For example, one end 601a of the first coil 600a and one end 611a of the second coil 600a are connected to the switch groups S1 and S2 via a node 619 and a capacitor 631 . can The other end 602a of the first coil 600a may be connected to the switch groups S3 and S4. The other end 612a of the second coil 610a may be connected to the switch groups S3B and S4B.

According to various embodiments, the first coil 600b and the second coil 610b of the second type may be connected to the switches S1, S2, S3, S4, S3B, and S4B. One end 601b of the first coil 600b and one end 611b of the second coil 600b may be connected to the switch groups S3 and S4. The other end 602b of the first coil 600b may be connected to the switch groups S1 and S2. For example, the other end 602b of the first coil 600b may be connected to the switch groups S1 and S2 via the capacitor 631 . The other end 612b of the second coil 610b may be connected to the switch groups S3B and S4B.

On the other hand, it will be understood by those skilled in the art that the connection relationship between the coils and the switches in FIGS. 6B and 6C is merely exemplary, and as long as the connection relationship between the coils and the switches in which the dot convention is set, as in FIG. 6A, there is no limitation, it will be understood by those skilled in the art. .

Referring to FIG. 7A , according to various embodiments, the electronic device 101 may operate in a power reception mode. The electronic device 101 may wirelessly receive power 701 from the external electronic device 103 . Power 701 may be an electromagnetic wave that changes in magnitude over time (eg, of an alternating current waveform). A voltage may be applied to the

coils

600 and 610 by the power 701 . The first coil 600 and the second coil 610 may have different sizes and/or shapes, and accordingly, the absolute value of the voltage applied to the first coil 600 and the voltage applied to the second coil 610 . The magnitude of the absolute value of may be different. For example, it is assumed that the voltage of the absolute value of V1 is applied to both ends of the first coil 600 and the voltage of the absolute value of V2 is applied to both ends of the second coil 610 . If the shape and/or size of the first coil 600 corresponds to the shape and/or size of the external electronic device 103 , V1 may be greater than V2 . It is assumed that the external electronic device 103 is implemented as a device such as a charging pad for the electronic device 101 , and accordingly, it is assumed that V2 is greater than V1. In the power reception mode, the electronic device 101 may check the default first coil 600 for power reception or may select the first coil 600 among both

coils

600 and 610 . As described above, a dot according to the dot convention may be set on the second point 602 side of the first coil 600, and a dot according to the dot convention on the third point 611 side of the second coil 610. dot can be set. The power 701 may have an AC waveform, and in FIG. 7A , it is assumed that a positive voltage is applied to the

points

602 and 611 where the dot according to the dot convention is set.

According to various embodiments, the electronic device 101 may determine to operate the switches S1 , S2 , S3 , and S4 corresponding to the first coil 600 . While power is received based on the first coil 600 , the switches S3B and S4B corresponding only to the second coil 610 may not operate. In the electronic device 101, while a positive voltage is applied to the first point 602 side of the first coil 600, the first switch S1 and the third switch S3 are in an on state, The second switch S2 and the fourth switch S4 may be controlled to be in an off state. Accordingly, positive power may be provided to the regulator 642 based on a path passing through the third switch S3 , the first coil 601 , and the first switch S1 . Meanwhile, a voltage of V2 may be applied to both ends of the second coil 610 , and a potential of V1-V2 may be set at the node 621 . On the other hand, the potential of V1 may be set in the node 633, and accordingly, the potential of V1 and the potential of V1-V2 are set on both sides based on the sixth switch S4B, and V1 is greater than V1-V2. Accordingly, current may not flow through the sixth switch S4B. In addition, the potential of V1-V2 and the potential of 0 may be set on both sides based on the fifth switch S3B, and as V1-V2 is greater than 0, the current may not flow through the fifth switch S3B. have. As dots according to the Dot convention are set on the side of the second point 602 of the first coil 600 and on the side of the third point 611 of the second coil 610, in the power reception mode, the first coil 600 ) only the switches (S1, S2, S3, S4) constituting the full-bridge circuit corresponding to the full-bridge rectification operation can perform the full-bridge rectification operation, and no current flows in the path formed by the remaining switches (S3B, S4B). have.

Referring to FIG. 7B , according to various embodiments, the electronic device 101 by the electric power 702 from the external electronic device 103 generates a negative signal to the first point 602 side of the first coil 600 . While the voltage is applied, the first switch S1 and the third switch S3 may be turned off, and the second switch S2 and the fourth switch S4 may be turned on. Accordingly, positive power may be provided to the regulator 642 based on a path passing through the second switch S2 , the first coil 601 , and the fourth switch S4 . Meanwhile, a voltage of V2 may be applied to both ends of the second coil 610 , and a potential of V2 may be set at the node 621 . The potential of V1 and the potential of V2 are set on both sides with respect to the sixth switch S4B, and as V1 is greater than V2, current may not flow through the sixth switch S4B. In addition, the potential of V2 and the potential of 0 may be set on both sides with respect to the fifth switch S3B, and as V2 is greater than 0, current may not flow through the fifth switch S3B. As the dots according to the Dot convention are set on the second point 602 side of the first coil 600 and the third point 611 side of the second coil 610, in the power reception mode, as described above, During both the positive voltage and the negative voltage is applied, only the switches S1, S2, S3, and S4 constituting the full bridge circuit corresponding to the first coil 600 perform the full bridge rectification operation. may be performed, and no current may flow in the path configured by the remaining switches S3B and S4B. Accordingly, among the plurality of switches, current flows only in paths corresponding to the switches corresponding to the coil (eg, the first coil 600) to which a larger voltage is applied, and current does not flow in other paths. Therefore, the full-bridge circuit for each coil can operate independently without additional configuration.

According to various embodiments, the controller 647 controls the first switch S1 and the third switch S3 to be on during the first period for rectification and the remaining switches S2, S4, S3B, and S4B. can be controlled in the off state. The first period may be a period corresponding to a period in which the positive voltage is applied to the second point 602 side of the first coil 600 , and depending on the implementation, the period and time in which the positive voltage is applied and at least part of it. It can be set to overlap, but there is no limit. During the second period, the controller 647 may control the second switch S2 and the fourth switch S4 to be on and the other switches S1 , S3 , S3B and S4B to be off. The second period may be a period corresponding to a period in which a negative voltage is applied to the side of the second point 602 of the first coil 600 , and according to an implementation, a period and a time period in which a positive voltage is applied and at least part of it. It can be set to overlap, but there is no limit. The controller 647 may use, for example, a signal from the first node 619 of the first coil as a synchronization signal, but there is no limit to the point at which it is used as the synchronization signal. The controller 647 controls the first switch S1 and the third switch S3 to be turned on during the first period based on the synchronization signal, and the second switch S2 and the fourth switch S3 during the second period S4) can be controlled in an off state.

On the other hand, although not shown, if the second coil 610 is selected as a coil for receiving power (or a default setting), the controller 647 is a switch corresponding to the second coil 610 ( S1, S2, S3B, S4B) can control the on/off state to perform the full bridge rectification operation, while the switches S3 and S4 corresponding only to the first coil 600 can maintain the off state. have.

According to various embodiments, the electronic device 101 (eg, the controller 647 ) may check the power reception mode in operation 801 . In one example, the electronic device 101 may identify the power reception mode based on a command such as a user input. Alternatively, the electronic device 101 may be set to the power reception mode as a default setting. In this case, the electronic device 101 may be switched to the power transmission mode based on a command causing a change to the power transmission mode.

When the power reception mode is set based on a user input or the power reception mode is set as a default setting, according to various embodiments, the communication module for wireless power transmission and reception of the electronic device 101 includes the external electronic device 103 . ) can wake up based on power from For example, the external electronic device 103 conforming to the Qi standard may check the arrangement of the electronic device 101 using the Q-ping signal, and may transmit a digital ping signal in response thereto. The communication module (eg, modulation/demodulation circuit) of the electronic device 101 may be woken up using, for example, a digital ping signal received through the first coil 610, and performs communication (eg, For example, AFK modulation) can be performed. Thereafter, the electronic device 101 may perform at least one procedure for wireless power reception according to the Qi standard and wirelessly receive power. For example, the external electronic device 103 conforming to the AFA standard may check the arrangement of the electronic device 101 using a short beacon and/or a long beacon, and correspondingly transmit a signal defined in a low power state ( For example, continuous authorization of long beacons) can be performed. The communication module (eg, BLE module) of the electronic device 101 may wake up using a signal defined in a low power state received through the first coil 610 , for example, and communicate in response thereto. may be performed (eg, sending an Advertisemnt signal). Thereafter, the electronic device 101 may perform at least one procedure for wireless power reception according to the AFA standard and wirelessly receive power.

According to various embodiments, the electronic device 101 (eg, the controller 647 ) may select switches for power reception in operation 803 . The electronic device 101 may output a switch control signal for rectification to the selected switches in operation 805 . For example, when the first coil 600 is set as a coil for power reception by default or is selected, the electronic device 101 performs the switches S1 , S2 , and S3 corresponding to the first coil 600 . , S4) can be selected. For example, when the electronic device 101 is implemented as a device such as a smart phone, it may be a common implementation to receive power from a wireless power transmission device such as a charger. In this case, the first coil 600 , which is a relatively large coil of the electronic device 101 , may be set as a default coil for power reception. Meanwhile, it will be understood by those skilled in the art that a relatively small coil may be set as a default depending on the form factor of the electronic device 101 . The electronic device 101 may control an on/off state so that the switches S1 , S2 , S3 , and S4 perform full bridge rectification. If, by default, the second coil 610 is set as a coil for power reception or is selected, the electronic device 101 switches the switches S1 , S2 , S3B and S4B corresponding to the second coil 610 . ) can be selected. The electronic device 101 may control an on/off state so that the switches S1, S2, S3B, and S4B perform full-bridge rectification.

According to various embodiments, the electronic device 101 (eg, the controller 647 ) may check the power transmission mode in operation 901 . In one example, the electronic device 101 may identify the power transmission mode based on a command such as a user input. For example, the electronic device 101 may display a UI for selecting to operate the electronic device 101 in the power transmission mode, and may be set to the power transmission mode based on a user input corresponding to the UI. have. Alternatively, the electronic device 101 may be set to the power transmission mode as a default setting. In this case, the electronic device 101 may be switched to the power reception mode based on a command causing a change to the power reception mode.

When the power transmission mode is set based on a user input or the power transmission mode is set as a default setting, according to various embodiments, the electronic device 101 is configured to detect the external electronic device 103 for power reception. Power may be applied to a coil (eg, the first coil 600 and/or the second coil 610 ). For example, the electronic device 101 conforming to the Qi standard may apply a Q-ping signal to a coil, and receive power based on a Q-factor and/or a resonant frequency measured while the Q-ping signal is applied. The arrangement of the external electronic device 103 for Based on the confirmation of the arrangement of the external electronic device 103 , the electronic device 101 may transmit a digital ping signal. The electronic device 101 may check whether data corresponding to the digital ping signal has been received from the external electronic device 103 using a communication module (eg, a modulation/demodulation circuit). Thereafter, the electronic device 101 may perform at least one procedure for wireless power transmission according to the Qi standard and transmit power for charging. For example, the electronic device 101 conforming to the AFA standard may apply a short beacon and/or a long beacon to the coil. The electronic device 101 may check the arrangement of the external electronic device 103 for power reception based on a load change during the application period of the short beacon and/or the long beacon, and correspondingly, it is defined in the low power state. Signal transmission (eg, continuous application of a long beacon) may be performed. The communication module (eg, BLE module) of the external electronic device 103 may be woken up using, for example, a signal defined in a low power state received through the first coil 610 , and in response thereto It may perform communication (eg, transmit an Advertisemnt signal). Upon receiving the advertisement signal, the electronic device 101 may perform at least one procedure for wireless power transmission according to the AFA standard and transmit power for charging.

According to various embodiments, the electronic device 101 (eg, the controller 647 ) may select switches for power transmission in operation 903 . In operation 905 , the electronic device 101 may output a switch control signal for converting DC to AC to the selected switches. For example, when the first coil 600 is selected as a coil for power transmission, the electronic device 101 may select the switches S1 , S2 , S3 , and S4 corresponding to the first coil 600 . have. The electronic device 101 may control the on/off state so that the switches S1 , S2 , S3 , and S4 perform direct current to alternating current conversion. If the second coil 610 is selected as a coil for power reception, the electronic device 101 may select the switches S1 , S2 , S3B and S4B corresponding to the second coil 610 . The electronic device 101 may control the on/off state so that the switches S1, S2, S3B, and S4B perform direct current to alternating current conversion. Control of the on/off state of the switch for converting DC to AC will be described with reference to FIGS. 10A to 10D .

In one example, the electronic device 101 may select one of the

coils

600 and 610 based on a user input. For example, the electronic device 101 may display a UI for selecting either a smart phone or a small home appliance (eg, a watch-type wearable device, or a wireless earphone). When charging of the smart phone is selected through the UI, the electronic device 101 may select the first coil 600 . When charging of the small home appliance is selected through the UI, the electronic device 101 may select the second coil 610 .

In another example, the electronic device 101 may select a coil based on information associated with the external electronic device 103 . The electronic device 101 may perform communication with the external electronic device 103 (eg, out-of-band communication such as BLE, or in-band communication), and is associated with the external electronic device 103 . information can be received. For example, the electronic device 101 may select a coil based on identification information of the external electronic device 103 . The electronic device 101 may store identification information and association information between a corresponding coil, and select a coil based on the association information and the received identification information. For example, the electronic device 101 may select a coil based on information related to the power class of the external electronic device 103 . The electronic device 101 may store association information between a power class and a corresponding coil, and may select a coil based on the association information and the received power class. For example, the electronic device 101 may select a coil based on coil information (eg, a size and/or a shape of a coil) of the external electronic device 103 . The electronic device 101 may store coil information and association information between a corresponding coil, and may select a coil based on the association information and the received coil information.

As another example, the electronic device 101 may select a coil based on electrical characteristics of the external electronic device 103 . For example, the electronic device 101 may measure the Q-factor of the external electronic device 103 and select a coil based on the measured Q-factor. The electronic device 101 may store association information between the Q-factor and the corresponding coil, and may select a coil based on the association information and the measured Q-factor. For example, the electronic device 101 is configured to operate in a coil (eg, the first coil 600 and/or the second coil 610 ) of the electronic device 101 caused by the arrangement of the external electronic device 103 . Coils can also be selected based on changes in the load of If the external electronic device 103 including a coil corresponding to the size and/or shape of the first coil 600 is disposed on the electronic device 101 , the load in the first coil 600 is changed The magnitude of the load change in the second coil 610 may be larger. In this case, the electronic device 101 may select the first coil 600 . If the external electronic device 103 including a coil corresponding to the size and/or shape of the second coil 610 is disposed on the electronic device 101 , the load in the second coil 610 is changed. The magnitude of the load change in the first coil 600 may be larger. In this case, the electronic device 101 may select the second coil 600 . Alternatively, the electronic device 101 may store association information between the magnitude of the load change and the coil corresponding to it, and may select a coil based on the association information and the measured magnitude of the load change.

10A to 10D are diagrams for explaining a direct current to alternating current conversion according to various embodiments. The embodiment of FIGS. 10A to 10D will be described with reference to FIG. 11 . 11 is a waveform diagram of a voltage applied to a coil according to various embodiments of the present disclosure;

According to various embodiments, the electronic device 101 (eg, the controller 647 ) may check the power transmission mode. In one example, the electronic device 101 may select the first coil 600 as a coil to transmit power. The electronic device 101 may control on/off of the switches S1, S2, S3, and S4 corresponding to the first coil 600 so that AC power is applied to the first coil 600, During this time, the switches S3B and S4B corresponding only to the second coil 610 may maintain an off state. The electronic device 101 may control the charger 644 to control and output the voltage of the power provided from the battery 646 to a specified level. Accordingly, power having a specified voltage may be output from the charger 644 . The electronic device 101 may control the regulator 642 to bypass the power provided from the charger 644 . Accordingly, power from the charger 644 may be provided to the power conversion circuit.

For example, referring to FIG. 10A , the electronic device 101 may control the second switch S2 and the fourth switch S4 to be in an on state so that a positive voltage is applied to the first coil 600 , The remaining switches S1 , S3 , S3B and S4B may be controlled to be in an off state, and current may be provided based on a path as shown in FIG. 10A . For example, referring to FIG. 10B , the electronic device 101 may control the first switch S1 and the third switch S3 to be turned on so that a negative voltage is applied to the first coil 600 , The remaining switches S2, S4, S3B, and S4B may be controlled to be in an off state, and current may be provided based on a path as shown in FIG. 10B . On the other hand, the voltage applied to the second coil 610 may be formed to be lower than the voltage provided from the charger 644, so that the current does not flow in the paths corresponding to the fifth switch S3B and the sixth switch S4B. may not be

In one example, the electronic device 101 may select the second coil 610 as a coil to transmit power. The electronic device 101 may control on/off of the switches S1, S2, S3B, and S4B corresponding to the second coil 610 so that AC power is applied to the second coil 610, During this time, the switches S3 and S4 corresponding only to the first coil 600 may maintain an off state. The electronic device 101 may control the charger 644 to control and output the voltage of the power provided from the battery 646 to a specified level. Accordingly, power having a specified voltage may be output from the charger 644 . The electronic device 101 may control the regulator 642 to bypass the power provided from the charger 644 . Accordingly, power from the charger 644 may be provided to the power conversion circuit. For example, referring to FIG. 10C , the electronic device 101 may control the second switch S2 and the sixth switch S4B to be in an on state so that a positive voltage is applied to the second coil 610 , The remaining switches S1 , S3 , S3B and S4 may be controlled to be in an off state, and current may be provided based on a path as shown in FIG. 10C . For example, referring to FIG. 10D , the electronic device 101 may control the first switch S1 and the fifth switch S3B to be in an on state so that a negative voltage is applied to the second coil 610 , The remaining switches S2, S4, S3, and S4B may be controlled to be in an off state, and current may be provided based on a path as shown in FIG. 10D. On the other hand, the voltage applied to the first coil 600 may be formed to be lower than the voltage provided from the charger 644 , so that no current flows in paths corresponding to the third switch S3 and the fourth switch S4 . may not be

For example, as shown in FIG. 11 , the electronic device 101 receives

positive voltages

1101 , 1102 , 1103 , 1104 , 1105 , 1106 , 1107 and 1108 , and

negative voltages

1111 and 1112 . , 1113, 1114, 1115, 1116, 1117, 1118) may be applied to control the power conversion circuit. For example, when the electronic device 101 selects the first coil 600 as a coil to transmit power, the second switch S2 and the fourth switch S4 are controlled to be turned on as shown in FIG. 10A . And, by controlling the remaining switches (S1, S3, S3B, S4B) to the off state, the positive voltages (1101,1102,1103,1104,1105,1106,1107,1108) in the first coil 600 can be authorized The period in which the

positive voltages

1101, 1102, 1103, 1104, 1105, 1106, 1107, and 1108 are applied, that is, the period in which the second switch S2 and the fourth switch S4 are controlled in an ON state, may be different. have. As shown in FIG. 10B , the electronic device 101 controls the first switch S1 and the third switch S3 to be in an on state, and controls the remaining switches S2, S4, S3B, and S4B to be in an off state. Accordingly,

negative voltages

1111 , 1112 , 1113 , 1114 , 1115 , 1116 , 1117 , and 1118 may be applied to the first coil 600 . The period in which the

negative voltages

1111, 1112, 1113, 1114, 1115, 1116, 1117, and 1118 are applied, that is, the period in which the first switch S1 and the third switch S3 are controlled to be in an ON state, may be different. have. Accordingly, an AC waveform by voltages may be applied to the first coil 600 , and electromagnetic waves are generated from the first coil 600 , so that the electronic device 101 can wirelessly transmit power in the power transmission mode. have. For example, the electronic device 101 switches on/off to have an AC waveform of a frequency specified for power transmission (eg, 100 to 205 kHz in the case of the Qi standard, or 6.78 MHz in the case of the AFA standard). It can be controlled, but the frequency is not limited. On the other hand, it will be understood by those skilled in the art that the switch on/off control of the power conversion circuit for generating an AC waveform as shown in FIG. 11 is merely exemplary, and there is no limitation in the method of the switch on/off control for the full-bridge DC to AC conversion. will be.

For example, when the electronic device 101 selects the second coil 610 as a coil to transmit power, the second switch S2 and the sixth switch S4B are controlled to be on as shown in FIG. 10C . And by controlling the remaining switches (S1, S3, S3B, S4) to the off state, the positive voltages (1101,1102,1103,1104,1105,1106,1107,1108) in the second coil (610) can be authorized The period in which the

positive voltages

1101,1102,1103,1104,1105,1106,1107,1108 are applied, that is, the period in which the second switch S2 and the sixth switch S4B are controlled in an on state, may be different have. As shown in FIG. 10D , the electronic device 101 controls the first switch S1 and the fifth switch S3B to be in an on state, and controls the remaining switches S2, S4, S3, and S4B to an off state. Accordingly,

negative voltages

1111 , 1112 , 1113 , 1114 , 1115 , 1116 , 1117 , and 1118 may be applied to the second coil 610 . The period in which the

negative voltages

1111, 1112, 1113, 1114, 1115, 1116, 1117, and 1118 are applied, that is, the period in which the first switch S1 and the fifth switch S3B are controlled to be in an on state, may be different. have.

Hereinafter, an electronic device 1200 that is an example of the electronic device 100 will be described with reference to FIG. 12 .

12 is a block diagram of an electronic device 1201 in a network environment 1200, according to various embodiments. Referring to FIG. 12 , in a network environment 1200 , an electronic device 1201 communicates with an electronic device 1202 (eg, an external electronic device 1203 ) through a first network 1298 (eg, a short-range wireless communication network). or may communicate with the electronic device 1204 or the server 1208 through the second network 1299 (eg, a remote wireless communication network). According to an embodiment, the electronic device 1201 may communicate with the electronic device 1204 through the server 1208 . According to an embodiment, the electronic device 1201 includes a processor 1220 , a memory 1230 , an input module 1250 , a sound output module 1255 , a display module 1260 , an audio module 1270 , and a sensor module ( 1276), interface 1277, connection terminal 1278, haptic module 1279, camera module 1280, power management module 1288, battery 1289, communication module 1290, subscriber identification module 1296 , or an antenna module 1297 . In some embodiments, at least one of these components (eg, the connection terminal 1278 ) may be omitted or one or more other components may be added to the electronic device 1201 . In some embodiments, some of these components (eg, sensor module 1276, camera module 1280, or antenna module 1297) are integrated into one component (eg, display module 1260). can be

The processor 1220, for example, executes software (eg, a program 1240) to execute at least one other component (eg, a hardware or software component) of the electronic device 1201 connected to the processor 1220. It can control and perform various data processing or operations. According to one embodiment, as at least part of data processing or operation, the processor 1220 may store commands or data received from other components (eg, the sensor module 1276 or the communication module 1290) into the volatile memory 1232 . , process commands or data stored in the volatile memory 1232 , and store the result data in the non-volatile memory 1234 . According to an embodiment, the processor 1220 includes the main processor 1221 (eg, a central processing unit or an application processor) or a secondary processor 1223 (eg, a graphics processing unit, a neural network processing unit) a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor). For example, when the electronic device 1201 includes a main processor 1221 and a sub-processor 1223 , the sub-processor 1223 uses less power than the main processor 1221 or is set to be specialized for a specified function. can The coprocessor 1223 may be implemented separately from or as part of the main processor 1221 .

The coprocessor 1223 may be, for example, on behalf of the main processor 1221 while the main processor 1221 is in an inactive (eg, sleep) state, or when the main processor 1221 is active (eg, executing an application). ), together with the main processor 1221, at least one of the components of the electronic device 1201 (eg, the display module 1260, the sensor module 1276, or the communication module 1290) It is possible to control at least some of the related functions or states. According to one embodiment, coprocessor 1223 (eg, image signal processor or communication processor) may be implemented as part of another functionally related component (eg, camera module 1280 or communication module 1290). have. According to an embodiment, the auxiliary processor 1223 (eg, a neural network processing unit) may include a hardware structure specialized for processing an artificial intelligence model. Artificial intelligence models can be created through machine learning. Such learning may be performed, for example, in the electronic device 1201 itself on which artificial intelligence is performed, or may be performed through a separate server (eg, the server 1208). The learning algorithm may include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but in the above example not limited The artificial intelligence model may include a plurality of artificial neural network layers. Artificial neural networks include deep neural networks (DNNs), convolutional neural networks (CNNs), recurrent neural networks (RNNs), restricted boltzmann machines (RBMs), deep belief networks (DBNs), bidirectional recurrent deep neural networks (BRDNNs), It may be one of deep Q-networks or a combination of two or more of the above, but is not limited to the above example. The artificial intelligence model may include, in addition to, or alternatively, a software structure in addition to the hardware structure.

The memory 1230 may store various data used by at least one component of the electronic device 1201 (eg, the processor 1220 or the sensor module 1276). The data may include, for example, input data or output data for software (eg, a program 1240) and instructions related thereto. The memory 1230 may include a volatile memory 1232 or a non-volatile memory 1234 .

The program 1240 may be stored as software in the memory 1230 , and may include, for example, an operating system 1242 , middleware 1244 , or an application 1246 .

The input module 1250 may receive a command or data to be used by a component (eg, the processor 1220 ) of the electronic device 1201 from the outside (eg, a user) of the electronic device 1201 . The input module 1250 may include, for example, a microphone, a mouse, a keyboard, a key (eg, a button), or a digital pen (eg, a stylus pen).

The sound output module 1255 may output a sound signal to the outside of the electronic device 1201 . The sound output module 1255 may include, for example, a speaker or a receiver. The speaker can be used for general purposes such as multimedia playback or recording playback. The receiver can be used to receive incoming calls. According to one embodiment, the receiver may be implemented separately from or as part of the speaker.

The display module 1260 may visually provide information to the outside (eg, a user) of the electronic device 1201 . The display module 1260 may include, for example, a display, a hologram device, or a projector and a control circuit for controlling the corresponding device. According to an embodiment, the display module 1260 may include a touch sensor configured to sense a touch or a pressure sensor configured to measure the intensity of a force generated by the touch.

The audio module 1270 may convert a sound into an electric signal or, conversely, convert an electric signal into a sound. According to an embodiment, the audio module 1270 acquires a sound through the input module 1250 or an external electronic device (eg, a sound output module 1255 ) directly or wirelessly connected to the electronic device 1201 . A sound may be output through the electronic device 1202 (eg, the external electronic device 1203) (eg, a speaker or headphones).

The sensor module 1276 detects an operating state (eg, power or temperature) of the electronic device 1201 or an external environmental state (eg, user state), and generates an electrical signal or data value corresponding to the sensed state. can do. According to an embodiment, the sensor module 1276 may include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, It may include a temperature sensor, a humidity sensor, or an illuminance sensor.

The interface 1277 supports one or more specified protocols that the electronic device 1201 may use to connect directly or wirelessly with an external electronic device (eg, electronic device 1202 (eg, external electronic device 1203)). can According to an embodiment, the interface 1277 may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

The connection terminal 1278 may include a connector through which the electronic device 1201 can be physically connected to an external electronic device (eg, the electronic device 1202 (eg, the external electronic device 1203 )). According to an embodiment, the connection terminal 1278 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (eg, a headphone connector).

The haptic module 1279 may convert an electrical signal into a mechanical stimulus (eg, vibration or movement) or an electrical stimulus that the user can perceive through tactile or kinesthetic sense. According to an embodiment, the haptic module 1279 may include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

The camera module 1280 may capture still images and moving images. According to one embodiment, the camera module 1280 may include one or more lenses, image sensors, image signal processors, or flashes.

The power management module 1288 may manage power supplied to the electronic device 1201 . According to an embodiment, the power management module 1288 may be implemented as, for example, at least a part of a power management integrated circuit (PMIC).

The battery 1289 may supply power to at least one component of the electronic device 1201 . According to one embodiment, battery 1289 may include, for example, a non-rechargeable primary cell, a rechargeable secondary cell, or a fuel cell.

Communication module 1290 is a direct (eg, electronic device 1201) and an external electronic device (eg, electronic device 1202 (eg, external electronic device 1203), electronic device 1204, or server 1208) between. : It is possible to support establishment of a wired) communication channel or a wireless communication channel, and performing communication through the established communication channel. The communication module 1290 operates independently of the processor 1220 (eg, an application processor) and may include one or more communication processors that support direct (eg, wired) communication or wireless communication. According to one embodiment, the communication module 1290 is a wireless communication module 1292 (eg, a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 1294 (eg, : LAN (local area network) communication module, or a power line communication module) may be included. A corresponding communication module among these communication modules is a first network 1298 (eg, a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network 1299 (eg, legacy). It may communicate with the external electronic device 1204 through a cellular network, a 5G network, a next-generation communication network, the Internet, or a telecommunication network such as a computer network (eg, LAN or WAN). These various types of communication modules may be integrated into one component (eg, a single chip) or may be implemented as a plurality of components (eg, multiple chips) separate from each other. The wireless communication module 1292 uses subscriber information (eg, International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module 1296 within a communication network, such as the first network 1298 or the second network 1299 . The electronic device 1201 may be identified or authenticated.

The wireless communication module 1292 may support a 5G network after a 4G network and a next-generation communication technology, for example, a new radio access technology (NR). NR access technology is a high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and access to multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low -latency communications)). The wireless communication module 1292 may support a high frequency band (eg, mmWave band) in order to achieve a high data rate, for example. The wireless communication module 1292 uses various techniques for securing performance in a high-frequency band, for example, beamforming, massive multiple-input and multiple-output (MIMO), all-dimensional multiplexing. Technologies such as full dimensional MIMO (FD-MIMO), array antenna, analog beam-forming, or large scale antenna may be supported. The wireless communication module 1292 may support various requirements defined in the electronic device 1201 , an external electronic device (eg, the electronic device 1204 ), or a network system (eg, the second network 1299 ). According to an embodiment, the wireless communication module 1292 includes a peak data rate (eg, 20 Gbps or more) for realization of eMBB, loss coverage (eg, 164 dB or less) for realization of mMTC, or U-plane latency (for URLLC realization) ( Example: Downlink (DL) and uplink (UL) may support 0.5 ms or less, or 1 ms or less round trip respectively).

The antenna module 1297 may transmit or receive a signal or power to the outside (eg, an external electronic device). According to an embodiment, the antenna module 1297 may include an antenna including a conductor formed on a substrate (eg, a PCB) or a radiator formed of a conductive pattern. According to an embodiment, the antenna module 1297 may include a plurality of antennas (eg, an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network such as the first network 1298 or the second network 1299 is connected from the plurality of antennas by, for example, the communication module 1290 . can be selected. A signal or power may be transmitted or received between the communication module 1290 and an external electronic device through the selected at least one antenna. According to some embodiments, other components (eg, a radio frequency integrated circuit (RFIC)) other than the radiator may be additionally formed as a part of the antenna module 1297 .

According to various embodiments, the antenna module 1297 may form a mmWave antenna module. According to one embodiment, the mmWave antenna module comprises a printed circuit board, an RFIC disposed on or adjacent to a first side (eg, bottom side) of the printed circuit board and capable of supporting a designated high frequency band (eg, mmWave band); and a plurality of antennas (eg, an array antenna) disposed on or adjacent to a second side (eg, top or side) of the printed circuit board and capable of transmitting or receiving signals of the designated high frequency band. can do.

At least some of the components are connected to each other through a communication method between peripheral devices (eg, a bus, general purpose input and output (GPIO), serial peripheral interface (SPI), or mobile industry processor interface (MIPI)) and a signal ( e.g. commands or data) can be exchanged with each other.

According to an embodiment, the command or data may be transmitted or received between the electronic device 1201 and the external electronic device 1204 through the server 1208 connected to the second network 1299 . Each of the external

electronic devices

1202 or 1204 may be the same or a different type of the electronic device 1201 . According to an embodiment, all or a part of the operations executed in the electronic device 1201 may be executed in one or more of the external

electronic devices

1202 , 1204 , or 1208 . For example, when the electronic device 1201 needs to perform a function or service automatically or in response to a request from a user or other device, the electronic device 1201 may perform the function or service itself instead of executing the function or service itself. Alternatively or additionally, one or more external electronic devices may be requested to perform at least a part of the function or the service. One or more external electronic devices that have received the request may execute at least a part of the requested function or service, or an additional function or service related to the request, and transmit a result of the execution to the electronic device 1201 . The electronic device 1201 may process the result as it is or additionally and provide it as at least a part of a response to the request. For this purpose, for example, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used. The electronic device 1201 may provide an ultra-low latency service using, for example, distributed computing or mobile edge computing. In another embodiment, the external electronic device 1204 may include an Internet of things (IoT) device. The server 1208 may be an intelligent server using machine learning and/or neural networks. According to an embodiment, the external electronic device 1204 or the server 1208 may be included in the second network 1299 . The electronic device 1201 may be applied to an intelligent service (eg, smart home, smart city, smart car, or health care) based on 5G communication technology and IoT-related technology.

According to various embodiments, the electronic device (eg, the electronic device 101 ) includes a first coil (eg, the first coil 500 and/or the first coil 600 ) wound in a first winding direction, the A second coil (eg, the second coil) disposed inside the first coil (eg, the first coil 500 and/or the first coil 600 ) and wound in a second winding direction different from the first winding direction coil 510 and/or second coil 610), the first coil (eg, first coil 500 and/or first coil 600) and the second coil (eg, second coil) 510) and/or connected to the second coil 610), the first induced power induced in the first coil (eg, the first coil 500 and/or the first coil 600) or the second The second induced power induced by the coil (eg, the second coil 510 and/or the second coil 610 ) is rectified and output, or the first coil (eg, using the driving power input from the outside) A power conversion circuit set to output charging power to the first coil 500 and/or the first coil 600) or the second coil (eg, the second coil 510 and/or the second coil 610) Including, the power conversion circuit, one end (eg, the second point 502 and / or the second point) of the first coil (eg, the first coil 500 and / or the first coil 600) 602) and one end (eg, the third point 511 and/or the third point 611) of the second coil (eg, the second coil 510 and/or the second coil 610) The other end (eg, the first point 501 and/or the first point 601) of the first switch group to be connected, the first coil (eg, the first coil 500 and/or the first coil 600) ) is connected to the second switch group, and the second coil (eg, the second coil 510 and/or the second coil 610) at the other end (eg, the fourth point 512 and/or the fourth point) 612) to which a third switch (eg, a third switch) is connected (S3)) a group, wherein the first switch group and the second switch group constitute a first full bridge circuit, and the first switch group and the third switch (eg, the third switch S3)) The group may constitute a second full-bridge circuit.

According to various embodiments, one end of the first coil (eg, the first coil 500 and/or the first coil 600 ) and the second coil (eg, the second coil 510 and/or the second coil) One end of the coil 610) is connected to the first switch group through one connection line, and the first coil (eg, the first coil 500 and/or the first coil 600) and the second The two coils (eg, the second coil 510 and/or the second coil 610 ) may be connected to each other in parallel.

According to various embodiments, the first switch group includes a first switch (eg, a first switch S1) and a second switch (eg, a second switch S2), and the first coil (eg: One end (eg, the second point 502 and/or the second point 602 ) of the first coil 500 and/or the first coil 600 ) and the second coil (eg, the second coil 510 ) ) and/or one end (eg, the third point 511 and/or the third point 611) of the second coil 610), the first switch (eg, the first switch S1) and the connected to a connection point (eg, connection point 633) between a second switch (eg, second switch S2), and the second group of switches includes a third switch (eg, third switch S3) and and a fourth switch (eg, the fourth switch S4), and the other end (eg, the first point 501) of the first coil (eg, the first coil 500 and/or the first coil 600). ) and/or the first point 601) is a connection point (eg, a connection point) between the third switch (eg, the third switch S3) and the fourth switch (eg, the fourth switch S4)). 605), the third switch (eg, third switch S3) group includes a fifth switch (eg, fifth switch S3B) and a sixth switch (eg, sixth switch S4B) ), and the other end (eg, the fourth point 512 and/or the fourth point 612) of the second coil (eg, the second coil 510 and/or the second coil 610) is It may be connected to a connection point (eg, connection point 621) between the fifth switch (eg, fifth switch S3B) and the sixth switch (eg, sixth switch S4B).

According to various embodiments, the electronic device (eg, the electronic device 101) further includes a controller (eg, a controller 647) configured to control the power conversion circuit, and the controller (eg, the controller 647) ) determines that the electronic device (eg, the electronic device 101) operates in the power reception mode, identifies a coil corresponding to the power reception mode, and switches corresponding to the coil corresponding to the power reception mode can be set to control their on/off state

According to various embodiments, the controller (eg, the controller 647) may include the first coil (eg, the first coil 500 and/or The first coil 600) is identified as a coil corresponding to the power receiving mode, and the controller (eg, the controller 647) determines the on/off state of switches corresponding to the coil corresponding to the power receiving mode. As at least part of the controlling operation, the second switch (eg, the second switch S2 ) and the fourth switch (eg, the fourth switch S4 ) are controlled to be in an on state during a first period, and the first a switch (eg, the first switch S1), the third switch (eg, the third switch S3), the fifth switch (eg, the fifth switch S3B), and the sixth switch (eg, the second switch S3B) 6 switch S4B) is controlled in an off state, and the first switch (eg, the first switch S1) and the third switch (eg, the third switch S3) are turned on during a second period. control, the second switch (eg, the second switch S2), the fourth switch (eg, the fourth switch S4), the fifth switch (eg, the fifth switch S3B), and the second switch It may be set to control the 6 switches (eg, the sixth switch S4B) in an off state.

According to various embodiments, the controller (eg, the controller 647 ) identifies the second coil as a coil corresponding to the power reception mode as at least part of the operation of identifying the coil corresponding to the power reception mode, and , the controller (eg, the controller 647), the second switch (eg, the second 2) and the sixth switch (eg, the sixth switch S4B) are controlled in an on state, and the first switch (eg, the first switch S1) and the third switch (eg: The third switch S3), the fourth switch (eg, the fourth switch S4), and the fifth switch (eg, the fifth switch S3B) are controlled in an OFF state, and during a second period, the second 1 switch (eg, the first switch S1) and the fifth switch (eg, the fifth switch S3B) are controlled in an on state, and the second switch (eg, the second switch S2), the Set to control the third switch (eg, the third switch S3), the fourth switch (eg, the fourth switch S4), and the sixth switch (eg, the sixth switch S4B) in an off state can be

According to various embodiments, the controller (eg, the controller 647 ) sets the default coil for the power reception mode to the power reception mode as at least part of the operation of checking the coil corresponding to the power reception mode. It can be set to identify as the corresponding coil.

According to various embodiments, the controller (eg, the controller 647) may include the first coil (eg, the first coil 500 and/or The first coil 600) and the second coil (eg, the second coil 510 and/or the second coil 610) to which a larger voltage is applied is selected as a coil corresponding to the power reception mode. or, the first coil (eg, the first coil 500 and/or the first coil 600) and the second coil (eg, the second coil 510 and/or the second coil 610) ) of an external electronic device (eg, an external electronic device) for checking a coil corresponding to the user input as a coil corresponding to the power reception mode, or for receiving power from the electronic device (eg, the electronic device 101) 103)), the first coil (eg, first coil 500 and/or first coil 600) and the second coil (eg, second coil 510 and/or The second coil 610 may be configured to identify any one coil as a coil corresponding to the power reception mode.

According to various embodiments, the electronic device (eg, the electronic device 101 ) further includes a controller (eg, a controller 647 ) configured to control the power conversion circuit, and the controller (eg, the controller 647 ) )) determines that the electronic device (eg, the electronic device 101) operates in a power transmission mode, identifies a coil corresponding to the power transmission mode, and determines a coil corresponding to the power transmission mode. It can be set to control the on/off state of the switches.

According to various embodiments, the controller (eg, the controller 647) may include the first coil (eg, the first coil 500 and/or The first coil 600) is identified as a coil corresponding to the power transmission mode, and the controller (eg, the controller 647) determines the on/off state of switches corresponding to the coil corresponding to the power transmission mode. As at least part of the controlling operation, the second switch (eg, the second switch S2) and the fourth switch (eg, the fourth switch S4) are controlled in an on state, and the first switch (eg: first switch S1), the third switch (eg, the third switch S3), the fifth switch (eg, the fifth switch S3B), and the sixth switch (eg, the sixth switch S4B) )) in an off state, the first coil (eg, the first coil ( ) 500) and/or the first coil 600) controls the power conversion circuit so that at least one positive voltage is applied, and the first switch (eg, the first switch S1) and the third switch ( Example: controlling the third switch S3) to be turned on, the second switch (eg, the second switch S2), the fourth switch (eg, the fourth switch S4), and the fifth switch By controlling (eg, the fifth switch S3B) and the sixth switch (eg, the sixth switch S4B) to an off state, the driving power provided from the battery (eg, the battery 646) set to control the power conversion circuit such that at least one negative voltage is applied to the first coil (eg, the first coil 500 and/or the first coil 600 ), and the at least one positive voltage and from the first coil (eg, the first coil 500 and/or the first coil 600 ) by the at least one negative voltage. An induced magnetic field may be emitted.

According to various embodiments, the controller (eg, the controller 647) may include the second coil (eg, the second coil 510 and/or The second coil 610) is identified as a coil corresponding to the power transmission mode, and the controller (eg, the controller 647) determines the on/off state of switches corresponding to the coil corresponding to the power transmission mode. As at least part of the controlling operation, the second switch (eg, the second switch S2) and the sixth switch (eg, the sixth switch S4B) are controlled in an on state, and the first switch (eg: first switch S1), the third switch (eg, the third switch S3), the fourth switch (eg, the fourth switch S4), and the fifth switch (eg, the fifth switch S3B) )) in the off state, by the driving power provided from a battery (eg, battery 646) of the electronic device (eg, electronic device 101), the second coil 510) and/or the second coil 610) controls the power conversion circuit so that at least one positive voltage is applied, and the first switch (eg, the first switch S1) and the fifth switch ( Example: controlling the fifth switch S3B) to be turned on, the second switch (eg, the second switch S2), the third switch (eg, the third switch S3), and the fourth switch By controlling (eg, the fourth switch S4) and the sixth switch (eg, the sixth switch S4B) to be in an off state, by the driving power provided from the battery (eg, the battery 646) set to control the power conversion circuit so that at least one negative voltage is applied to the second coil (eg, the second coil 510 and/or the second coil 610 ), and the at least one positive voltage and from the second coil (eg, the second coil 510 and/or the second coil 610) by the at least one negative voltage. An induced magnetic field may be emitted.

According to various embodiments, the controller (eg, the controller 647) may include the first coil (eg, the first coil 500 and/or A coil corresponding to a user input among the first coil 600) and the second coil (eg, the second coil 510 and/or the second coil 610) is identified as a coil corresponding to the power transmission mode, or , based on information associated with an external electronic device (eg, the external electronic device 103) for receiving power from the electronic device (eg, the electronic device 101), the first coil (eg, the first coil ( 500) and/or the first coil 600) and the second coil (eg, the second coil 510 and/or the second coil 610). or based on the electrical characteristics of the external electronic device (eg, the external electronic device 103), the first coil (eg, the first coil 500 and/or the first coil 600) and the second coil (eg, the second coil 510 and/or the second coil 610 ).

According to various embodiments, a first coil (eg, the first coil 500 and/or the first coil 600 ) wound in a first winding direction, the first coil (eg, the first coil 500 ) and / or a second coil disposed inside the first coil 600 and wound in a second winding direction different from the first winding direction (eg, the second coil 510 and/or the second coil 610 ) , connected to the first coil (eg, the first coil 500 and/or the first coil 600 ) and the second coil (eg the second coil 510 and/or the second coil 610 ). a first induced power induced in the first coil (eg, the first coil 500 and/or the first coil 600) or the second coil (eg, the second coil 510 and/or the second The first coil (eg, the first coil 500 and/or the first coil 600 ) is rectified and output by rectifying the second induced power induced from the coil 610 , or by using the driving power input from the outside. ) or an electronic device (eg, electronic device 101) including a power conversion circuit configured to output charging power to the second coil (eg, the second coil 510 and/or the second coil 610). The operation method includes an operation of selecting any one of a power reception mode and a power transmission mode, the first coil (eg, the first coil 500 and/or the first coil 600) and the second coil ( Example: an operation of identifying a coil corresponding to the selected mode among the second coil 510 and/or the second coil 610 , switches corresponding to the identified coil among switches included in the power conversion circuit an operation of confirming, and an operation of controlling an on/off state of switches corresponding to the identified coil based on the selected mode, other than the identified switches among switches included in the power conversion circuit The remaining switches may remain off.

According to various embodiments, the power conversion circuit includes a first switch (eg, a first switch S1), a second switch (eg, a second switch S2), and a third switch (eg, a third switch (S2)) S3)), a fourth switch (eg, a fourth switch S4), a fifth switch (eg, a fifth switch S3B), and a sixth switch (eg, a sixth switch S4B); One end (eg, the second point 502 and/or the second point 602) of the first coil (eg, the first coil 500 and/or the first coil 600) and the second coil ( Example: one end (eg, the third point 511 and/or the third point 611 ) of the second coil 510 and/or the second coil 610 , the first switch (eg, the first is connected to a connection point between the switch S1) and the second switch (eg, the second switch S2), and the first coil (eg, the first coil 500 and/or the first coil 600) ) of the other end (eg, the first point 501 and/or the first point 601) is the third switch (eg, the third switch S3) and the fourth switch (eg, the fourth switch S4) )) and the other end of the second coil (eg, the second coil 510 and/or the second coil 610) (eg, the fourth point 512 and/or the fourth point) 612) is connected to a connection point between the fifth switch (eg, the fifth switch S3B) and the sixth switch (eg, the sixth switch S4B), and the first switch (eg, the first switch S4B) 1 switch S1), the second switch (eg, the second switch S2), the third switch (eg, the third switch S3), and the fourth switch (eg, the fourth switch S4) )) constitutes a first full-bridge circuit, the first switch (eg, the first switch (S1)), the second switch (eg, the second switch (S2)), the fifth switch (eg, the second 5 switch (S3B)), and the sixth switch (eg, the sixth switch (S4B)) constitute a second full-bridge circuit can do.

According to various embodiments, the operation of selecting one of the power reception mode and the power transmission mode may select the power reception mode.

According to various embodiments, the first coil (eg, the first coil 500 and/or the first coil 600 ) and the second coil (eg, the second coil 510 and/or the second coil ( ) 610)), the operation of checking the coil corresponding to the selected mode is to check the first coil (eg, the first coil 500 and/or the first coil 600) as a coil corresponding to the selected mode. can Based on the selected mode, the operation of controlling the on/off states of switches corresponding to the identified coil may include, during a first period, the second switch (eg, the second switch S2) and the fourth switch ( Example: controlling the fourth switch S4) to be turned on, and the first switch (eg, the first switch S1), the third switch (eg, the third switch S3), and the fifth switch (eg, the fifth switch S3B) and the sixth switch (eg, the sixth switch S4B) in an off state, and during a second period, the first switch (eg, the first switch S1) )) and the third switch (eg, the third switch S3) are controlled in an on state, and the second switch (eg, the second switch S2), the fourth switch (eg, the fourth switch (S3)) S4)), controlling the fifth switch (eg, fifth switch S3B) and the sixth switch (eg, sixth switch S4B) to an off state.

According to various embodiments, the first coil (eg, the first coil 500 and/or the first coil 600) and the second coil (eg, the second coil 510 and/or the second coil ( 610)), in the operation of checking the coil corresponding to the selected mode, a coil set as a default for the power reception mode may be identified as a coil corresponding to the selected mode.

According to various embodiments, the operation of selecting one of the power reception mode and the power transmission mode may select the power transmission mode.

According to various embodiments, the first coil (eg, the first coil 500 and/or the first coil 600) and the second coil (eg, the second coil 510 and/or the second coil ( 610)), the operation of checking the coil corresponding to the selected mode includes checking the first coil (eg, the first coil 500 and/or the first coil 600) as a coil corresponding to the selected mode. can Based on the selected mode, the operation of controlling the on/off states of switches corresponding to the identified coil may include the second switch (eg, the second switch S2) and the fourth switch (eg, the fourth switch S4) to an on state, and the first switch (eg, the first switch S1), the third switch (eg, the third switch S3), and the fifth switch (eg, the first switch S1) By controlling the fifth switch S3B) and the sixth switch (eg, the sixth switch S4B) to an off state, a battery (eg, battery 646) of the electronic device (eg, electronic device 101) Controlling the power conversion circuit so that at least one positive voltage is applied to the first coil (eg, the first coil 500 and/or the first coil 600) by the driving power provided from and controlling the first switch (eg, the first switch S1) and the third switch (eg, the third switch S3) to be turned on, and the second switch (eg, the second switch S2) ), the fourth switch (eg, the fourth switch S4), the fifth switch (eg, the fifth switch S3B), and the sixth switch (eg, the sixth switch S4B) are turned off By controlling the first coil (eg, the first coil 500 and/or the first coil 600) by the driving power provided from the battery (eg, the battery 646), at least one negative and controlling the power conversion circuit so that a voltage is applied, and by the at least one positive voltage and the at least one negative voltage, the first coil (eg, the first coil 500 and/or An induced magnetic field may be emitted from the first coil 600 .

According to various embodiments, the first coil (eg, the first coil 500 and/or the first coil 600) and the second coil (eg, the second coil 510 and/or the second coil ( 610)), the operation of checking the coil corresponding to the selected mode is to check the second coil (eg, the second coil 510 and/or the second coil 610) as a coil corresponding to the selected mode. can Based on the selected mode, the operation of controlling the on/off states of switches corresponding to the identified coil may include the second switch (eg, the second switch S2) and the sixth switch (eg, the sixth switch S4B) is turned on, and the first switch (eg, the first switch S1), the third switch (eg, the third switch S3), and the fourth switch (eg, the first switch S1) By controlling the 4 switch S4) and the fifth switch (eg, the fifth switch S3B) to be turned off, the battery (eg, the battery 646) of the electronic device (eg, the electronic device 101) controlling the power conversion circuit so that at least one positive voltage is applied to the second coil (eg, the second coil 510 and/or the second coil 610) by the power provided from; controlling the first switch (eg, the first switch S1) and the fifth switch (eg, the fifth switch S3B) in an on state, and the second switch (eg, the second switch S2); By controlling the third switch (eg, the third switch S3), the fourth switch (eg, the fourth switch S4), and the sixth switch (eg, the sixth switch S4B) in an off state , so that at least one negative voltage is applied to the second coil (eg, the second coil 510 and/or the second coil 610 ) by power provided from the battery (eg, the battery 646 ). and controlling the power conversion circuit, and by the at least one positive voltage and the at least one negative voltage, the second coil (eg, the second coil 510 and/or the second coil ( 610)), an induced magnetic field may be emitted.

According to various embodiments, the first coil (eg, the first coil 500 and/or the first coil 600) and the second coil (eg, the second coil 510 and/or the second coil ( 610)) of the first coil (eg, the first coil 500 and/or the first coil 600) and the second coil (eg, the second Checking a coil corresponding to the user input among the coil 510 and/or the second coil 610 as a coil corresponding to the selected mode, receiving power from the electronic device (eg, the electronic device 101 ) The first coil (eg, the first coil 500 and/or the first coil 600) and the second coil based on information associated with an external electronic device (eg, the external electronic device 103) (eg, the second coil 510 and/or the second coil 610 ) checking one of the coils as the coil corresponding to the selected mode, or the external electronic device (eg, the external electronic device 103 ) )), the first coil (eg, the first coil 500 and/or the first coil 600) and the second coil (eg, the second coil 510 and/or It may include an operation of identifying any one of the second coils 610 as a coil corresponding to the selected mode.

The electronic device according to various embodiments disclosed in this document may have various types of devices. The electronic device may include, for example, a portable communication device (eg, a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance device. The electronic device according to the embodiment of the present document is not limited to the above-described devices.

The various embodiments of this document and terms used therein are not intended to limit the technical features described in this document to specific embodiments, but it should be understood to include various modifications, equivalents, or substitutions of the embodiments. In connection with the description of the drawings, like reference numerals may be used for similar or related components. The singular form of the noun corresponding to the item may include one or more of the item, unless the relevant context clearly dictates otherwise. As used herein, "A or B", "at least one of A and B", "at least one of A or B", "A, B or C", "at least one of A, B and C", and "A , B, or C," each of which may include any one of the items listed together in the corresponding one of the phrases, or all possible combinations thereof. Terms such as "first", "second", or "first" or "second" may simply be used to distinguish an element from other elements in question, and may refer elements to other aspects (e.g., importance or order) is not limited. It is said that one (eg, first) component is “coupled” or “connected” to another (eg, second) component, with or without the terms “functionally” or “communicatively”. When referenced, it means that one component can be connected to the other component directly (eg by wire), wirelessly, or through a third component.

The term “module” used in various embodiments of this document may include a unit implemented in hardware, software, or firmware, and is interchangeable with terms such as, for example, logic, logic block, component, or circuit. can be used as A module may be an integrally formed part or a minimum unit or a part of the part that performs one or more functions. For example, according to an embodiment, the module may be implemented in the form of an application-specific integrated circuit (ASIC).

Various embodiments of the present document are stored in a storage medium (eg, internal memory or external memory) readable by a machine (eg, the electronic device 101 and/or the external electronic device 103). It may be implemented as software (eg, a program) including one or more instructions. For example, the processor of the device (eg, the electronic device 101 and/or the external electronic device 103) may call at least one command among one or more commands stored from a storage medium and execute it. This makes it possible for the device to be operated to perform at least one function in accordance with the called at least one command. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The device-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' only means that the storage medium is a tangible device and does not contain a signal (eg, electromagnetic wave), and this term is used in cases where data is semi-permanently stored in the storage medium and It does not distinguish between temporary storage cases.

According to one embodiment, the method according to various embodiments disclosed in this document may be provided as included in a computer program product. Computer program products may be traded between sellers and buyers as commodities. The computer program product is distributed in the form of a machine-readable storage medium (eg compact disc read only memory (CD-ROM)), or via an application store (eg Play Store ^TM ) or on two user devices ( It can be distributed (eg downloaded or uploaded) directly or online between smartphones (eg: smartphones). In the case of online distribution, at least a part of the computer program product may be temporarily stored or temporarily created in a machine-readable storage medium such as a memory of a server of a manufacturer, a server of an application store, or a relay server.

According to various embodiments, each component (eg, a module or a program) of the above-described components may include a singular or a plurality of entities, and some of the plurality of entities may be separately disposed in other components. have. According to various embodiments, one or more components or operations among the above-described corresponding components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (eg, a module or a program) may be integrated into one component. In this case, the integrated component may perform one or more functions of each component of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. . According to various embodiments, operations performed by a module, program, or other component are executed sequentially, in parallel, repeatedly, or heuristically, or one or more of the operations are executed in a different order, or omitted. or one or more other operations may be added.

Claims

In an electronic device,

a first coil wound in a first winding direction;

a second coil disposed inside the first coil and wound in a second winding direction different from the first winding direction;

It is connected to the first coil and the second coil to rectify and output the first induced power induced from the first coil or the second induced power induced from the second coil, or drive power input from the outside. and a power conversion circuit set to output charging power to the first coil or the second coil using

The power conversion circuit,

a first switch group to which one end of the first coil and one end of the second coil are connected;

a second switch group to which the other end of the first coil is connected, and

and a third switch group to which the other end of the second coil is connected,

The first switch group and the second switch group constitute a first full-bridge circuit, and the first switch group and the third switch group constitute a second full-bridge circuit.
The method of claim 1,

One end of the first coil and one end of the second coil are connected to the first switch group through one connection line,

The first coil and the second coil are connected in parallel to each other.
The method of claim 1,

The first switch group includes a first switch and a second switch, and one end of the first coil and one end of the second coil are connected to a connection point between the first switch and the second switch,

The second switch group includes a third switch and a fourth switch, and the other end of the first coil is connected to a connection point between the third switch and the fourth switch,

The third switch group includes a fifth switch and a sixth switch, and the other end of the second coil is connected to a connection point between the fifth switch and the sixth switch.
4. The method of claim 3,

Further comprising a controller configured to control the power conversion circuit,

The controller is:

determining that the electronic device operates in a power reception mode;

Check the coil corresponding to the power reception mode,

An electronic device configured to control an on/off state of switches corresponding to the coil corresponding to the power reception mode.
5. The method of claim 4,

The controller, as at least part of the operation of identifying the coil corresponding to the power receiving mode, identifies the first coil as the coil corresponding to the power receiving mode,

The controller, as at least part of the operation of controlling the on/off state of switches corresponding to the coil corresponding to the power reception mode,

controlling the second switch and the fourth switch in an on state during a first period, and controlling the first switch, the third switch, the fifth switch and the sixth switch in an off state;

An electronic device configured to control the first switch and the third switch in an on state and control the second switch, the fourth switch, the fifth switch, and the sixth switch to an off state during a second period.
5. The method of claim 4,

The controller, as at least a part of the operation of identifying the coil corresponding to the power receiving mode, identifies the second coil as the coil corresponding to the power receiving mode,

The controller, as at least part of the operation of controlling the on/off state of switches corresponding to the coil corresponding to the power reception mode,

controlling the second switch and the sixth switch in an on state during a first period, and controlling the first switch, the third switch, the fourth switch and the fifth switch in an off state;

An electronic device configured to control the first switch and the fifth switch in an on state and control the second switch, the third switch, the fourth switch, and the sixth switch to an off state during a second period.
5. The method of claim 4,

The controller is configured to identify, as at least a part of an operation of identifying a coil corresponding to the power reception mode, a coil set as a default for the power reception mode as a coil corresponding to the power reception mode.
5. The method of claim 4,

The controller, as at least part of the operation of checking the coil corresponding to the power reception mode,

A coil to which a larger voltage is applied among the first coil and the second coil is identified as a coil corresponding to the power reception mode, or

A coil corresponding to a user input among the first coil and the second coil is identified as a coil corresponding to the power reception mode, or

An electronic device configured to identify one of the first coil and the second coil as a coil corresponding to the power receiving mode based on information associated with an external electronic device for receiving power from the electronic device.
4. The method of claim 3,

Further comprising a controller configured to control the power conversion circuit,

The controller is:

determining that the electronic device operates in a power transmission mode;

Check the coil corresponding to the power transmission mode,

An electronic device configured to control an on/off state of switches corresponding to a coil corresponding to the power transmission mode.
10. The method of claim 9,

The controller, as at least part of the operation of identifying the coil corresponding to the power transmission mode, identifies the first coil as a coil corresponding to the power transmission mode,

The controller, as at least part of the operation of controlling the on/off state of switches corresponding to the coil corresponding to the power transmission mode,

provided from the battery of the electronic device by controlling the second switch and the fourth switch in an on state, and controlling the first switch, the third switch, the fifth switch, and the sixth switch in an off state controlling the power conversion circuit so that at least one positive voltage is applied to the first coil by the driving power,

The driving power provided from the battery by controlling the first switch and the third switch to be in an on state and controlling the second switch, the fourth switch, the fifth switch, and the sixth switch to be in an off state is set to control the power conversion circuit so that at least one negative voltage is applied to the first coil by

An induced magnetic field is emitted from the first coil by the at least one positive voltage and the at least one negative voltage.
10. The method of claim 9,

The controller, as at least part of the operation of identifying the coil corresponding to the power transmission mode, identifies the second coil as the coil corresponding to the power transmission mode,

The controller, as at least part of the operation of controlling the on/off state of switches corresponding to the coil corresponding to the power transmission mode,

provided from the battery of the electronic device by controlling the second switch and the sixth switch in an on state, and controlling the first switch, the third switch, the fourth switch, and the fifth switch in an off state controlling the power conversion circuit so that at least one positive voltage is applied to the second coil by the driving power;

The driving power provided from the battery by controlling the first switch and the fifth switch in an on state, and controlling the second switch, the third switch, the fourth switch, and the sixth switch in an off state is set to control the power conversion circuit so that at least one negative voltage is applied to the second coil by

An induced magnetic field is emitted from the second coil by the at least one positive voltage and the at least one negative voltage.
10. The method of claim 9,

The controller, as at least part of the operation of checking the coil corresponding to the power transmission mode,

Checking a coil corresponding to a user input among the first coil and the second coil as a coil corresponding to the power transmission mode, or

Based on information associated with an external electronic device for receiving power from the electronic device, one of the first coil and the second coil is identified as a coil corresponding to the power transmission mode, or

an electronic device configured to identify one of the first coil and the second coil as a coil corresponding to the power transmission mode based on an electrical characteristic of the external electronic device.
A first coil wound in a first winding direction, a second coil disposed inside the first coil and wound in a second winding direction different from the first winding direction, and connected to the first coil and the second coil The first induction power induced by the first coil or the second induction power induced by the second coil is rectified and output, or the first coil or the second coil is charged using driving power input from the outside. A method of operating an electronic device comprising a power conversion circuit configured to output power, the method comprising:

selecting any one of a power reception mode and a power transmission mode;

checking a coil corresponding to the selected mode among the first coil and the second coil;

Checking the switches corresponding to the identified coil among the switches included in the power conversion circuit, and

Controlling on/off states of switches corresponding to the identified coil based on the selected mode

including,

Among the switches included in the power conversion circuit, the remaining switches other than the checked switches are maintained in an off state.
14. The method of claim 13,

The power conversion circuit includes a first switch, a second switch, a third switch, a fourth switch, a fifth switch, and a sixth switch,

One end of the first coil and one end of the second coil are connected to a connection point between the first switch and the second switch,

The other end of the first coil is connected to a connection point between the third switch and the fourth switch,

The other end of the second coil is connected to a connection point between the fifth switch and the sixth switch,

The first switch, the second switch, the third switch, and the fourth switch constitute a first full bridge circuit,

The first switch, the second switch, the fifth switch, and the sixth switch constitute a second full bridge circuit.
15. The method of claim 14,

The operation of selecting one of the power reception mode and the power transmission mode includes selecting the power reception mode.