CN117811616A - Electronic apparatus and control method thereof - Google Patents

Abstract

The present disclosure provides an electronic device and a control method thereof, the electronic device including: the device comprises a first coil, a second coil and a matching circuit, wherein the matching circuit is respectively connected with the first coil and the second coil, the matching circuit is in a first control state, and the first coil and the second coil form the same target coil; the matching circuit is in a second control state, and the first coil and the second coil are independent target coils respectively; the first functional chip is communicated with the target coil through the matching circuit, so that the electronic equipment has a first function; the second functional chip is communicated with the target coil through the matching circuit, so that the electronic equipment has a second function, and the second functional chip is different from the second functional chip.

Description

Electronic apparatus and control method thereof

Technical Field

The disclosure relates to wireless charging and near field communication technologies, and in particular, to an electronic device and a control method thereof.

Background

Electronic devices have more and more functions and more integrated functions, and in addition, the electronic devices are light and thin and have a trend of development. For example, efficient use of space in a cell phone to layout more functional devices is a problem that needs to be addressed.

Disclosure of Invention

The present disclosure provides an electronic device and a control method thereof, so as to at least solve the above technical problems in the prior art.

According to a first aspect of the present disclosure, there is provided an electronic device comprising:

the first coil is arranged to be connected to a first coil,

a second coil is arranged on the first coil,

the matching circuit is respectively connected with the first coil and the second coil, is in a first control state and forms the same target coil with the second coil; the matching circuit is in a second control state, and the first coil and the second coil are independent target coils respectively;

the first functional chip is communicated with the target coil through the matching circuit, so that the electronic equipment has a first function;

the second functional chip is communicated with the target coil through the matching circuit, so that the electronic equipment has a second function, and the second functional chip is different from the second functional chip.

In an embodiment, the first functional chip is a processing chip for wirelessly transmitting communication signals; the second functional chip is a processing chip for wirelessly transmitting an electric energy signal;

the first coil and the second coil form the same target coil for being configured as one of: wirelessly transmitting the power signal, wirelessly transmitting the communication signal;

the first coil is a separate target coil configured to be one of: wirelessly transmitting the power signal, wirelessly transmitting the communication signal;

the second coil is a separate target coil configured to be one of: the power signal is transmitted wirelessly, and the communication signal is transmitted wirelessly.

In one embodiment, the first coil is a coil wound by a first cable;

the second coil is a coil wound by a second cable;

the region corresponding to the inner ring of the first coil comprises the second coil, and the number of turns of the second coil is larger than that of the first coil.

In an embodiment, if the matching circuit is in a first control state, the first coil and the second coil constitute the same target coil configured to communicate with the second functional chip;

if the matching circuit is in a second control state, the first coil is configured as an independent target coil in communication with the first functional chip.

In an embodiment, if the matching circuit is in a first control state, the first coil and the second coil constitute the same target coil configured to communicate with the second functional chip;

if the matching circuit is in a second control state, the first coil is configured as a separate target coil to communicate with the first functional chip and the second coil is configured as a separate target coil to communicate with the second functional chip.

In an embodiment, the electronic device further includes:

the third coil is a coil wound by a third cable;

wherein,

the first coil is a coil wound by a first cable;

the second coil is a coil wound by a second cable;

the second coil is positioned in a first area corresponding to the inner ring of the first coil, and the third coil is positioned in a second area corresponding to the inner ring of the second coil; the number of turns of the second coil is greater than the number of turns of the first coil and greater than the number of turns of the third coil.

In an embodiment, the matching circuit is in a first control state, and the first coil, the second coil and the third coil form the same target coil and are configured to communicate with the second functional chip as a wireless transmission power signal;

the matching circuit is in a second control state, the first coil is configured as an independent target coil to communicate with the first functional chip as a wireless transmission communication signal, the second coil is configured as an independent target coil to communicate with the second functional chip as a wireless transmission power signal, and the third coil is configured as an independent target coil to communicate with the first functional chip as a wireless transmission communication signal.

In an embodiment, the matching circuit is in a first control state, and the first coil, the second coil and the third coil form the same target coil and are configured to communicate with the second functional chip as a wireless transmission power signal;

the matching circuit is in a second control state, the first coil and the third coil form the same target coil and are configured to be communicated as the first functional chip for wirelessly transmitting communication signals, and the second coil is configured to be communicated as the second functional chip for wirelessly transmitting electric energy signals.

In an embodiment, the second functional chip is in a first working mode, controls the matching circuit to be in a second control state, and senses a wireless electric energy signal generated by the wireless charging device through the second coil;

if the wireless power signal is obtained, the second functional chip is in a second working mode;

and if the second functional chip is in the second working mode, controlling the matching circuit to be in a first control state, and obtaining a wireless electric energy signal generated by the wireless charging device through the same target coil.

According to a second aspect of the present disclosure, there is provided a control method of the electronic device, including:

if the wireless charging device is in the first working mode, the control matching circuit is in a second control state, the wireless power signal generated by the wireless charging device is sensed through the second coil, and the wireless communication signal generated by the wireless communication device is sensed through the first coil; the first coil and the second coil belong to at least two coils included in the electronic equipment;

and if the wireless charging device is in the second working mode, controlling the matching circuit to be in a first control state, and acquiring a wireless electric energy signal generated by the wireless charging device through the same target coil formed by the first coil and the second coil.

It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the disclosure, nor is it intended to be used to limit the scope of the disclosure. Other features of the present disclosure will become apparent from the following specification.

Drawings

The above, as well as additional purposes, features, and advantages of exemplary embodiments of the present disclosure will become readily apparent from the following detailed description when read in conjunction with the accompanying drawings. Several embodiments of the present disclosure are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings, in which:

in the drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

Fig. 1 is a schematic diagram showing a composition structure of an electronic device according to an embodiment of the present disclosure;

FIG. 2 shows a schematic structural diagram of a coil of an embodiment of the present disclosure;

FIG. 3 shows a schematic implementation of an electronic device of an embodiment of the present disclosure;

FIG. 4 shows a schematic implementation of an electronic device of an embodiment of the present disclosure;

FIG. 5 shows a schematic implementation of an electronic device of an embodiment of the present disclosure;

fig. 6 shows a flowchart of a control method of an electronic device according to an embodiment of the disclosure.

Detailed Description

In order to make the objects, features and advantages of the present disclosure more comprehensible, the technical solutions in the embodiments of the present disclosure will be clearly described in conjunction with the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are only some embodiments of the present disclosure, but not all embodiments. Based on the embodiments in this disclosure, all other embodiments that a person skilled in the art would obtain without making any inventive effort are within the scope of protection of this disclosure.

Fig. 1 shows a schematic diagram of a composition structure of an electronic device according to an embodiment of the present disclosure, as shown in fig. 1, the electronic device according to the embodiment of the present disclosure includes:

the first coil (10) is arranged to be wound around a coil,

the second coil 20, wherein the first coil 10 may be a coil wound with a first cable having a first end 11 and a second end 12 as shown in fig. 1, and the second coil 20 is a coil wound with a second cable having a first end 21 and a second end 22. Although the first coil 10 and the second coil 20 are shown in fig. 1 as being wound in an approximately circular shape, the winding shape of the coils is not limited by the embodiment of the present disclosure, and may be any shape of coil, such as rectangular, triangular, polygonal, etc. The two ends of the first coil 10 are connected to the matching circuit 30 via connection lines, and similarly, the two ends of the second coil 20 are connected to the matching circuit 30 via connection lines.

In the embodiment of the present disclosure, fig. 1 shows that the first coil 10 and the second coil 20 are coils formed by winding in one plane. As another example, the coil may be formed by three-dimensional winding, and the shape of the coil is not limited, and may be any shape, such as a figure 8 shape, a cylindrical shape, a conical shape, or the like, or may be a spiral line. For example, for a mobile phone, a game machine, or the like, which has a small size of electronic equipment, a coil structure formed by winding in a plane having a small area and volume is required, and for an electronic equipment having a large size of a speaker or the like, a combined coil having a three-dimensional structure may be adopted.

The matching circuit 30 is respectively connected with the first coil 10 and the second coil 20, the matching circuit 30 is in a first control state, and the first coil and the second coil form the same target coil; the matching circuit 30 is in a second control state, and the first coil 10 and the second coil 20 are independent target coils respectively; as shown in fig. 1, the matching circuit 30 may connect the first coil 10 and the second coil 20 in series to form the same target coil, for example, the second end 12 of the first coil 10 and the first end 21 of the second coil 20 may be connected to each other, the first end 11 of the first coil 10 and the second end 22 of the second coil 20 may be free ends, the same target coil may be configured, or the first end 11 of the first coil 10 and the first end 21 of the second coil 20 may be connected to each other, the second end 12 of the first coil 10 and the second end 22 of the second coil 20 may be free ends, the first end 11 of the first coil 10 and the second end 22 of the second coil 20 may be connected to each other, the first end 12 of the first coil 10 and the first end 21 of the second coil 20 may be free ends, the same target coil may be configured, and the like; alternatively, the first coil 10 and the second coil 20 constitute the same target coil in parallel connection. Alternatively, the first coil 10 and the second coil 20 are independent target coils, respectively.

A first functional chip 40, the first functional chip 40 being connected to the target coil through the matching circuit 30 so that the electronic device has a first function;

and a second functional chip 50, the second functional chip 50 being connected to the target coil through the matching circuit 30 so that the electronic device has a second function. Wherein the second functional chip 50 is different from the second functional chip 40.

As an implementation manner, the first functional chip 40 may be a processing chip for wirelessly transmitting a communication signal, for example, may be a near field communication functional chip; the second functional chip 50 may be a processing chip for wirelessly transmitting an electric power signal, for example, a charging functional chip, and the second functional chip 50 may enable the electronic device to be used as a power receiver and receive other electronic devices to be charged through wireless signals, or enable the electronic device to be used as a power supply and charge other electronic devices through wireless signals.

In the case where the first functional chip 40 is a processing chip for wirelessly transmitting a communication signal and the second functional chip 50 is a processing chip for wirelessly transmitting an electric power signal, the first coil 10 and the second coil 20 constitute the same target coil, and are configured as one of the following: wirelessly transmitting the power signal, wirelessly transmitting the communication signal;

the first coil 10 is a separate target coil for being configured as one of: wirelessly transmitting the power signal, wirelessly transmitting the communication signal;

the second coil 20 is a separate target coil for being configured as one of: the power signal is transmitted wirelessly, and the communication signal is transmitted wirelessly.

That is, when the first coil and the second coil are connected as the same target coil configured as the second functional chip for wirelessly transmitting the electric power signal, the transmission of the wireless electric power can be completed by satisfying the turn number requirement (the turn number requirement or more, i.e., the requirement of the sensing flux) of the coil required for wireless charging. When the second coil is separated from the second coil and is connected with the first functional chip and the second functional chip respectively and independently, if the first coil is connected with the first processing chip for wireless transmission of communication signals, the first coil meets the functional requirement of the first processing chip. If the second coil is connected with a second functional chip for wireless transmission of the power signal, the second coil satisfies the wireless charging requirement required by the second processing chip. That is, the wireless communication coil is formed by separating a part of the coil from the wireless charging coil. Thereby effectively utilizing the shell space of the electronic equipment such as the mobile phone and the like.

The target coil of the embodiment of the disclosure mainly utilizes the electromagnetic induction principle, generates a magnetic field through the change of current in an electromagnetic field, and changes the magnetic field of the coil through an oscillating circuit so as to read and write data or charge and discharge wireless electric energy with external electronic equipment.

Taking wireless transmission communication as near field communication (Near Field Communication, NFC) communication as an example, if an NFC coil is placed in an environment (such as an NFC inductor) of a matching element, electromagnetic waves emitted by another receiving coil are generated, and the electromagnetic waves are used for communication. When the reader-writer meeting the conditions is detected, the radio frequency coil can send the magnetic field, so that communication connection is established, and wireless communication signal transmission is realized.

In the embodiment of the present disclosure, considering that the first coil 10 and the second coil 20 are mounted inside the electronic device, it is necessary to make the space occupied by the first coil 10 and the second coil 20 as small as possible, for example, the first coil 10 and the second coil 20 may be wound in a planar arrangement, and the area corresponding to the inner ring of the first coil 10 includes the second coil 20, and the number of turns of the second coil 20 is larger than that of the first coil 10. The number of turns of the first coil 10 and the second coil 20 is not limited in the embodiments of the present disclosure, and the magnetic field strength that the coils need to induce, the installation space of the coils, and the like need to be considered. When the first coil 10 and the second coil 20 are disposed in the same plane and the second coil 20 is positioned at the inner circumference of the first coil 10, the number of turns of the second coil 20 wound is greater than that of the first coil 10.

In the embodiment of the present disclosure, if the matching circuit 30 is in the first control state, the first coil 10 and the second coil 20 constitute the same target coil configured to communicate with the second functional chip 50. In the embodiment of the present disclosure, when the matching circuit 30 is in the first control state, the first coil 10 and the second coil 20 constitute the same target coil in series connection or in parallel connection, and the target coil is in communication with the second functional chip 50 through the matching circuit 30. When the second functional chip 50 is a processing chip for wirelessly transmitting power signals, the target coil receives and transmits the wirelessly transmitted power signals. If the matching circuit 30 is in the second control state, the first coil 10 is configured as a separate target coil to communicate with the first functional chip 40. When the matching circuit 30 is in the second control state, the first coil 10 communicates with the first functional chip 40 through the matching circuit 30, and the first coil 10 serves as a wireless communication antenna for transmission of wireless signals.

As another implementation, if the matching circuit 30 is in the first control state, the first coil 10 and the second coil 20 constitute the same target coil configured to communicate with the second functional chip 50; if the matching circuit 30 is in the second control state, the first coil 10 is configured as an independent target coil in communication with the first functional chip 40, and the second coil 20 is configured as an independent target coil in communication with the second functional chip 50. In this example, in the case where the matching circuit 30 is in the first control state, the first coil 10 and the second coil 20 as the same target coil are configured to communicate with the second functional chip 50, wirelessly transmitting the power signal. When the matching circuit 30 is in the second control state, the first coil 10 and the second coil 20 respectively serve as independent target coils and respectively communicate with the first functional chip 40 and the second functional chip 50, and at this time, the first coil 10 can wirelessly transmit a communication signal based on the first functional chip 40 and the second coil 20 can wirelessly transmit an electric power signal based on the second functional chip 50. In this case, the first coil 10 and the second coil 20 may transmit signals simultaneously or may transmit signals separately in a time-sharing manner.

In addition, as an implementation manner, in the case where the first and second functional chips 40 and 50 are supported in capability and the number of turns of the coil is set reasonable, the first and second coils 10 and 20 communicate with the first functional chip 40 through the matching circuit 30 as independent target coils, respectively, and the first and second coils 10 and 20 transmit communication signals wirelessly as the first functional chip 40; alternatively, the first coil 10 and the second coil 20 are respectively connected to the second functional chip 50 as independent target coils through the matching circuit 30, and the first coil 10 and the second coil 20 transmit wireless power signals through the second functional chip 50, thereby realizing a wireless charging or discharging function.

Fig. 3 shows a second schematic diagram of a composition structure of an electronic device according to an embodiment of the disclosure, as shown in fig. 2, where the electronic device according to the embodiment of the disclosure further includes:

a third coil 60, the third coil 60 being a coil wound by a third cable; the first coil 10 is a coil wound by a first cable; the second coil 20 is a coil wound by a second cable;

as shown in fig. 2, the coil structure of the embodiment of the present disclosure may be: the second coil 20 is located in a first area corresponding to the inner ring of the first coil 10, and the third coil 60 is located in a second area corresponding to the inner ring of the second coil 20; the number of turns of the second coil 20 is greater than the number of turns of the first coil 10 and greater than the number of turns of the third coil 60. The number of turns of the coil is set mainly based on the functions of the coil, the matching circuit 30 and the function chip. Each coil is provided with two ends, and the ends of the coil can be connected with a control switch or a=control logic circuit, so that mutual series connection and parallel connection between the coils and parallel connection and series connection between part of the coils are realized, and the coils which are mutually connected can be communicated with the first functional chip 40 and/or the second functional chip 50 according to the requirement, so that corresponding wireless charging and/or wireless communication functions are realized.

As shown in fig. 2, in the embodiment of the present disclosure, the first coil 10, the second coil 20, and the third coil 60 are located in the same plane, the third coil 60 is located in an outer area, the second coil 20 is located in an outer area of the first coil 10, and the first coil 10, the second coil 20, and the third coil 60 are disposed in the electronic device in a manner that occupies the smallest possible area.

In the embodiment of the disclosure, the matching circuit 30 is in the first control state, and the first coil 10, the second coil 20, and the third coil 60 constitute the same target coil and are configured to communicate with the second functional chip 50 as a wireless transmission power signal.

In the embodiment of the disclosure, the second functional chip 50 may be implemented by a WLC chip to implement transmission of a wireless power signal through a target coil, and the first functional chip 40 may be implemented by an NFC chip to implement transmission of a wireless signal through the target coil. Embodiments of the present disclosure are not limited to WLC chips and NFC chips.

In the embodiment of the present disclosure, the first coil 10, the second coil 20, and the third coil 60 are connected in series, specifically, a first end of the first coil 10 is connected to one end of the second coil 20, a second end of the first coil 10 is connected to one end of the third coil 60, and the first coil 10, the second coil 20, and the third coil 60 are connected in series to constitute the same target coil and are in communication with the second functional chip 50 as a wireless transmission power signal.

The matching circuit 30 is in a second control state, the first coil 10 is configured to communicate as an independent target coil with the first functional chip 40 as a wireless transmission communication signal, the second coil 20 is configured to communicate as an independent target coil with the second functional chip 50 as a wireless transmission power signal, and the third coil 60 is configured to communicate as an independent target coil with the first functional chip 40 as a wireless transmission communication signal. As one implementation, the first coil 10 is configured as a separate target coil to communicate as the first functional chip 40 transmitting communication signals wirelessly, and the third coil 60 is configured as a separate target coil to communicate as the first functional chip 40 transmitting communication signals wirelessly.

In the embodiment of the present disclosure, if the matching circuit 30 is in the first control state, the first coil 10, the second coil 20, and the third coil 60 constitute the same target coil and are configured to communicate with the second functional chip 50 as a wireless transmission power signal.

The matching circuit 30 is in a second control state, the first coil 10 and the third coil 60 constitute the same target coil configured to communicate with the first functional chip 40 as a wireless transmission communication signal, and the second coil 20 as a separate target coil configured to communicate with the second functional chip 40 as a wireless transmission power signal.

In the embodiment of the disclosure, in the case that the electronic device is in a wireless charging state, the first coil 10, the second coil 20 and the third coil 60 constitute the same target coil and are configured to communicate with the second functional chip 50 as a wireless transmission power signal, and the three switches SW are all switched to the second functional chip 50 such as a WLC chip;

however, when the second coil 20 of the electronic device is used as an independent target coil and is connected to the second functional chip 40, only the second coil 20 is used as a charging coil, energy transmission is performed by intermittent energy coupling of the coils according to the electromagnetic induction principle, the input end converts alternating current commercial power into a DC power by a full-bridge rectifier circuit, and the output direct current is converted into high-frequency alternating current by an active crystal oscillator inverter after passing through a power processing module, so as to supply the high-frequency alternating current to the primary winding. In the embodiment of the disclosure, when only the second coil 20 is used as the charging coil, the ability of the second coil 20 to sense the wireless charging signal is correspondingly reduced, in which case, in order to enhance the detection ability of the wireless charging signal of the electronic device, the bridge circuit needs to be operated in the half-bridge mode, so that a larger voltage, such as a multiplied voltage, can be provided for the second coil 20, so that even when the second coil 20 is in a relatively smaller sensing amount, the wireless charging signal can still be detected from the wireless transmitter, and enough energy transmitted by the wireless signal is detected, so that the charging function of the electronic device is awakened (wake up). When the WLC detects the wireless charging signal TX, the first coil 10, the second coil 20 and the third coil 60 are connected in series to form the same target coil through the SW switch, and are connected with the second functional chip 50, so that the electronic device is switched to the wireless charging function through the target coil, and is in the wireless charging mode at this time, the matching circuit 30 makes the bridge circuit in the full bridge mode, so as to improve the charging efficiency of the electronic device. Since the bridge circuit is an existing circuit, its details are not repeated here.

In the embodiment of the disclosure, the second functional chip 50 is in the first working mode, and controls the matching circuit 30 to be in the second control state, and senses the wireless power signal generated by the wireless charging device through the second coil 20; as described above, when the second functional chip 50 is in the first operation mode, the matching circuit 30 is controlled to be in the second control state, and the wireless power signal generated by the wireless charging device is sensed by the second coil 20 alone, so that the bridge circuit of the matching circuit 30 is in the half-bridge operation mode.

If a wireless power signal is obtained, the second functional chip 50 is in a second mode of operation; if the second functional chip 50 is in the second working mode, the matching circuit 30 is controlled to be in the first control state, and the wireless power signal generated by the wireless charging device is obtained through the same target coil. As described above, when the wireless charging signal is detected, the second functional chip 50 is in the fully-on state, and the first coil 10, the second coil 20 and the third coil 60 are connected in series to form the same target coil by switching the switch state of SW, so as to transmit the wireless power signal, and at this time, the bridge circuit of the matching circuit 30 is switched to the full-bridge control mode, so as to improve the charging efficiency of the target coil.

In the embodiment of the disclosure, the detection and switching control of the working mode may be implemented by an application controller in the electronic device, that is, the controller in the electronic device is used to implement the function of opening and switching the functional chip of the embodiment of the disclosure, so as to implement the connection control of each coil and the selection of the working mode.

In the embodiment of the present disclosure, the second functional chip 50 or the first functional chip 40 may be selected as a device for detecting and switching control of the operation mode without considering the cost and the complexity of the connection line.

The essence of the technical solution of the embodiments of the present disclosure is further elucidated below by means of specific examples.

In this example, taking the coil including the first coil 10, the second coil 20, and the third coil 60 as an example, the first functional chip 40 is an NFC chip, and the second functional chip is a wireless charging chip (Wireless Charging, WLC) chip.

As shown in fig. 3, an electronic device of an embodiment of the present disclosure includes:

a first coil 10, a second coil 20, a third coil 60; as shown in fig. 2, the second coil 20 is located in a first region corresponding to the inner circumference of the first coil 10, and the third coil 60 is located in a second region corresponding to the inner circumference of the second coil 20; the number of turns of the second coil 20 is greater than the number of turns of the first coil 10 and greater than the number of turns of the third coil 60. The first coil 10, the second coil 20, and the third coil 60 are located in the same plane.

The matching circuit 30 is connected to the first coil 10, the second coil 20, and the third coil 60, respectively. As shown in fig. 4, for each coil, two multi-throw multi-open control switches SW are provided, and two ends of each coil are respectively connected with the two control switches SW, that is, a first end of the first coil 10 is respectively connected to the two corresponding SWs, and a second end of the first coil 10 is respectively connected to the two corresponding SWs, so that the first coil 10 is respectively connected to the two control switches SW. Similarly, the first end of the second coil 20 is first connected to two corresponding SWs, the second end of the second coil 20 is respectively connected to two corresponding SWs, the first end of the third coil 60 is first connected to two corresponding SWs, and the second end of the third coil 60 is respectively connected to two corresponding SWs. In this way, the first coil 10, the second coil 20, and the third coil 60 can be interconnected, and by setting different gating modes for the control switch SW, the first coil 10, the second coil 20, and the third coil 60 can be connected in series, or the first coil 10, the second coil 20, and the third coil 60 can be connected in parallel, or two coils of the first coil 10, the second coil 20, and the third coil 60 can be connected in series as one target coil, and the remaining one coil alone can be the target coil, or two coils of the first coil 10, the second coil 20, and the third coil 60 can be connected in parallel as one target coil, and the remaining one coil alone can be the target coil. In addition, the matching circuit 30 can control any connection between the first coil 10, the second coil 20, and the third coil 60 by gating the control switch SW and the connection function. After the connection mode of the coils is determined by the matching circuit 30, the set target coils are respectively connected with the NFC chip 40 and the WLC chip 50, so that the coils realize near field communication signal transmission or wireless power signal transmission.

In the embodiment of the disclosure, the control switch SW may also implement a connection function between coils through a circuit logic circuit or a control chip without considering costs.

As one example, the matching circuit 30 of the embodiment of the present disclosure supports at least the following connection control:

the first coil 10, the second coil 20 and the third coil 60 are connected in series and connected with the WLC chip 50;

alternatively, the first coil 10 and the second coil 20 are connected in series, connected to the WLC chip 50, and the third coil 60 is connected to the NFC chip 40;

alternatively, the third coil 60 and the second coil 20 are connected in series, connected to the WLC chip 50, and the first coil 10 is connected to the NFC chip 40;

alternatively, the second coil 20 is connected to the WLC chip 50, and the first coil 10 is connected to the NFC chip 40;

alternatively, the second coil 20 is connected to the WLC chip 50, and the third coil 60 is connected to the NFC chip 40;

alternatively, the second coil 20 is connected to the WLC chip 50, and the first coil 10 and the third coil 60 are connected to the NFC chip 40 as separate target coils.

That is, the connection between the coils and the connection combination with the NFC chip 40 or the WLC chip 50 may be any combination without considering the specific functions of the NFC chip 40 and the WLC chip 50 and the number of coil turns and frequency band requirements actually supported.

As shown in fig. 4, the matching circuit 60 is shown in the second control state, and the thick solid line in the figure indicates that the path is enabled for the control of the corresponding control switch, that is, the connection line corresponding to the path is turned on, and the connection line is enabled as the coil of NFC. The broken line in the figure indicates that the control of the corresponding control switch makes the path active, i.e., the connection line corresponding to the path is on, indicating that the control is enabled as the coil of the WLC. The third coil 60 is connected with the access point and the grounding point of the NFC through the two control switches SW, and the third coil 60 is used as an independent target coil and connected with the NFC through the control switches SW and the corresponding gating circuits, so that wireless communication signals can be transmitted, communication interaction with an external NFC reader-writer is realized, and NFC reading and writing can be realized, or the third coil can also be used as an NFC reader-writer to perform NFC reading and writing on other electronic devices. Similarly, the first coil 10 is respectively connected with the access point and the grounding point of the NFC through the two control switches SW, and the first coil 10 is used as an independent target coil and is connected with the NFC through the control switches SW and the corresponding gating circuits, so that wireless communication signals can be transmitted, communication interaction with an external NFC reader-writer is realized, and NFC reading and writing can be realized, or the first coil can also be used as an NFC reader-writer to perform NFC reading and writing on other electronic devices.

As shown in fig. 4, as an implementation, the third coil 60 and the first coil 10 may be connected in parallel by the control switch SW, and the first coil 10 and the third coil 60 may be connected to an NFC access point (having two access points) via a gate circuit, respectively, to input signals to the coils and to ground, respectively, to realize the NFC function.

As shown in fig. 4, the second coil 20 as a separate target coil communicates with the second functional chip 50 as a wireless transmission power signal through SW. In this way, the first coil 10 and the third coil 60 serve as coils for wirelessly transmitting communication signals, and electromagnetic waves emitted from the receiving coil of the wireless reader can be perceived by the first coil 10 or the third coil 60, respectively, and wireless communication can be performed with the wireless reader. The second coil 20 transmits a radio energy signal, and the matching circuit 60 is in the second control state.

As shown in fig. 5, the matching circuit 60 is shown in the first control state, and the first coil 10, the second coil 20, and the third coil 60 constitute the same target coil; the dashed line in the figure indicates that the control for the corresponding control switch is made effective, i.e. the corresponding connection line of the path is turned on, indicates that the coil as WLC is enabled, the first end of the third coil 60 is connected to the first coil access point of the WLC chip 50 via the first control switch SW, the second end of the third coil 60 is connected to the third control switch SW via the second control switch SW, the third control switch SW is connected to the first end of the second coil 20, i.e. the series connection of the third coil 60 and the second coil 20 is achieved, the second end of the second coil 20 is connected to the fourth control switch SW, the fourth control switch SW is connected to the fifth control switch SW, the first end of the first coil 10 is connected to the fifth control switch SW, i.e. the series connection of the third coil and the second coil as a whole to the first coil is achieved, the second end of the first coil 10 is connected to the sixth control switch SW, and the second end of the first coil 10 is connected to the second coil access point of the WLC chip 50 via the sixth control switch SW, the first end of the first coil 10 is connected to the second coil access point of the WLC chip 50, and the first coil 20, the second coil 60 is connected to the same chip as a series connection of the WLC chip 50. The matching circuit 30 is in the second control state at this time. In fig. 5, six control switches SW represent a first control switch SW, a second control switch SW, a third control switch SW, a fourth control switch SW, a fifth control switch SW and a sixth control switch SW, respectively, in the order from top to bottom. The broken line in the figure indicates connection enabling, i.e. a first end of the third coil 60 is connected with the first coil access point of the WLC chip 50 by means of the first control switch SW, a second control switch SW is connected with the third control switch SW by means of gating, a fourth control switch SW is connected with the fifth control switch SW by means of gating, a second end of the first coil 10 is connected with the second coil access point of the WLC chip 50 by means of the sixth control switch SW, and the remaining thin solid line indicates non-gating.

According to the technical scheme of the embodiment of the disclosure, the plurality of coils are arranged, and the plurality of coils form the same target coil through the matching circuit, or the plurality of coils are respectively used as independent target coils. According to the embodiment of the disclosure, through the adjustment of the communication relation between the coils, the connection with different functional chips is realized, when the coils are used as antennas, the antenna area is saved, meanwhile, the central field intensity of certain functions is increased, and the problems of overlarge peripheral size and weaker local field intensity of the coils are solved; two antennas can also be made to operate simultaneously in corresponding detection states.

Fig. 6 shows a flowchart of a control method of an electronic device according to an embodiment of the disclosure, and as shown in fig. 6, the control method of the electronic device according to the embodiment of the disclosure includes the following processing steps:

step 101, if the wireless charging device is in a first working mode, the control matching circuit is in a second control state, the wireless power signal generated by the wireless charging device is sensed through the second coil, and the wireless communication signal generated by the wireless communication device is sensed through the first coil; the first coil and the second coil belong to at least two coils included in the electronic device.

In the embodiment of the disclosure, the electronic device may be an electronic device such as a PC, a PAD, a television, a mobile phone, a game console, or the like. The electronic device is provided with a controller or a logic control circuit, which can execute the identification and switching of the first working mode in the step 101, and can control the matching circuit to switch the connection mode of the coils, thereby realizing the coils with corresponding functions. The specific coil control manner may be referred to the description in the foregoing embodiments, and details thereof will not be repeated here.

Step 102, if the matching circuit is in the second working mode, controlling the matching circuit to be in the first control state, and obtaining a wireless power signal generated by the wireless charging device through the same target coil formed by the first coil and the second coil.

In the embodiment of the disclosure, after the electronic device detects the wireless charging signal through the second coil, the second functional chip is triggered to be in a complete on state, and the first coil, the second coil and the third coil are connected in series to be the same target coil through switching the on-off state of the SW, so that the wireless electric energy signal is transmitted, and at the moment, the bridge circuit of the matching circuit is switched to a full-bridge control mode, so that the charging efficiency of the target coil is improved.

In the embodiment of the disclosure, if the first coil and the second coil are connected as the same target coil configured as the second functional chip for wirelessly transmitting the electric energy signal, or if the first coil, the second coil and the third coil are connected as the same target coil configured as the second functional chip for wirelessly transmitting the electric energy signal, the turn number requirement of the coil required for wireless charging (that is, the turn number of the same target coil is equal to the turn number requirement, that is, the requirement of the sensing flux) is satisfied, the transmission of the wireless electric energy can be completed. That is, another wireless charging device is close to the wireless charging device and can directly perform wireless charging.

If the second coil is connected to the second functional chip that is the target coil independently, the second functional chip needs to be in the first operation mode (described in the previous embodiment, which is not repeated here), so that when the number of turns of the second coil is smaller than the number of turns requirement, the energy of the coil of the other infinite charging device can still be sensed, that is, the operation of maintaining wireless charging under low-inductance is still performed. By separating a part of the coil (the first coil or/and the third coil) from the wireless charging coil (the same target coil) as the wireless communication coil, the functions of wireless charging and wireless communication are effectively ensured under the condition that the shell space of the electronic equipment such as a mobile phone and the like is effectively utilized (namely, the number of turns is not increased).

It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps recited in the present disclosure may be performed in parallel or sequentially or in a different order, provided that the desired results of the technical solutions of the present disclosure are achieved, and are not limited herein.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present disclosure, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

The foregoing is merely specific embodiments of the disclosure, but the protection scope of the disclosure is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the disclosure, and it is intended to cover the scope of the disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims (10)

1. An electronic device, comprising:

the first coil is arranged to be connected to a first coil,

a second coil is arranged on the first coil,

the matching circuit is respectively connected with the first coil and the second coil, is in a first control state and forms the same target coil with the second coil; the matching circuit is in a second control state, and the first coil and the second coil are independent target coils respectively;

the first functional chip is communicated with the target coil through the matching circuit, so that the electronic equipment has a first function;

the second functional chip is communicated with the target coil through the matching circuit, so that the electronic equipment has a second function, and the second functional chip is different from the second functional chip.

2. The electronic device of claim 1, the first functional chip being a processing chip that wirelessly transmits communication signals; the second functional chip is a processing chip for wirelessly transmitting an electric energy signal;

the first coil and the second coil form the same target coil for being configured as one of: wirelessly transmitting the power signal, wirelessly transmitting the communication signal;

the first coil is a separate target coil configured to be one of: wirelessly transmitting the power signal, wirelessly transmitting the communication signal;

the second coil is a separate target coil configured to be one of: the power signal is transmitted wirelessly, and the communication signal is transmitted wirelessly.

3. The electronic device according to claim 1,

the first coil is a coil wound by a first cable;

the second coil is a coil wound by a second cable;

the region corresponding to the inner ring of the first coil comprises the second coil, and the number of turns of the second coil is larger than that of the first coil.

4. The electronic device of claim 3, wherein if the matching circuit is in a first control state, the first coil and the second coil constitute the same target coil configured to communicate with the second functional chip;

if the matching circuit is in a second control state, the first coil is configured as an independent target coil in communication with the first functional chip.

5. The electronic device of claim 3, wherein if the matching circuit is in a first control state, the first coil and the second coil constitute the same target coil configured to communicate with the second functional chip;

if the matching circuit is in a second control state, the first coil is configured to communicate with the first functional chip as an independent target coil and the second coil is configured to communicate with the second functional chip as an independent target coil.

6. The electronic device of claim 1, further comprising:

the third coil is a coil wound by a third cable;

wherein,

the first coil is a coil wound by a first cable;

the second coil is a coil wound by a second cable;

the second coil is positioned in a first area corresponding to the inner ring of the first coil, and the third coil is positioned in a second area corresponding to the inner ring of the second coil; the number of turns of the second coil is greater than the number of turns of the first coil and greater than the number of turns of the third coil.

7. The electronic device according to claim 6, wherein the matching circuit is in a first control state, and the first coil, the second coil, and a third coil constitute the same target coil configured to communicate with the second functional chip as a wireless transmission power signal;

the matching circuit is in a second control state, the first coil is configured as an independent target coil to communicate with the first functional chip as a wireless transmission communication signal, the second coil is configured as an independent target coil to communicate with the second functional chip as a wireless transmission power signal, and the third coil is configured as an independent target coil to communicate with the first functional chip as a wireless transmission communication signal.

8. The electronic device according to claim 6, wherein the matching circuit is in a first control state, and the first coil, the second coil, and a third coil constitute the same target coil configured to communicate with the second functional chip as a wireless transmission power signal;

the matching circuit is in a second control state, the first coil and the third coil form the same target coil and are configured to be communicated as the first functional chip for wirelessly transmitting communication signals, and the second coil is configured to be communicated as the second functional chip for wirelessly transmitting electric energy signals.

9. The electronic device of claim 1, wherein the second functional chip is in a first operation mode, controls the matching circuit to be in a second control state, and senses a wireless power signal generated by the wireless charging device through the second coil;

if the wireless power signal is obtained, the second functional chip is in a second working mode;

and if the second functional chip is in the second working mode, controlling the matching circuit to be in a first control state, and obtaining a wireless electric energy signal generated by the wireless charging device through the same target coil.

10. A control method, comprising:

if the wireless charging device is in the first working mode, the control matching circuit is in a second control state, the wireless power signal generated by the wireless charging device is sensed through the second coil, and the wireless communication signal generated by the wireless communication device is sensed through the first coil; the first coil and the second coil belong to at least two coils included in the electronic equipment;

and if the wireless charging device is in the second working mode, controlling the matching circuit to be in a first control state, and acquiring a wireless electric energy signal generated by the wireless charging device through the same target coil formed by the first coil and the second coil.