CN110518707B

CN110518707B - Transmitting terminal device, receiving terminal device and wireless charging method

Info

Publication number: CN110518707B
Application number: CN201910749008.0A
Authority: CN
Inventors: 张军
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2019-08-14
Filing date: 2019-08-14
Publication date: 2022-01-28
Anticipated expiration: 2039-08-14
Also published as: CN110518707A; WO2021027411A1

Abstract

The embodiment of the invention provides transmitting end equipment, receiving end equipment and a wireless charging method. The transmitting-end device includes: a control chip for wireless charging; a first transmission path connected with the control chip; and at least one second transmission path connected with the control chip; wherein each transmission path comprises: the device comprises a driving chip connected with the control chip, an inverter circuit connected with the driving chip and a transmitting coil connected with the inverter circuit. In the embodiment of the invention, a plurality of parallel transmitting paths are arranged in transmitting end equipment, and a plurality of receiving paths matched with the transmitting paths are arranged in receiving end equipment. A wireless charging path can be established between each transmitting path and each receiving path, so that a plurality of parallel wireless charging paths can be formed to charge the same receiving terminal equipment, thereby greatly shortening the wireless charging time and improving the wireless charging efficiency.

Description

Transmitting terminal device, receiving terminal device and wireless charging method

Technical Field

The embodiment of the invention relates to the technical field of communication, in particular to transmitting end equipment, receiving end equipment and a wireless charging method.

Background

The wireless charging means that the charging is performed by transmitting electric energy by using an alternating magnetic field generated between coils, instead of connecting a conventional charging power line to a terminal device to be charged. In order to realize wireless charging, a wireless transmitting terminal is arranged in a common wireless charger to transmit electric energy; a wireless receiving end is arranged in the charged terminal equipment (such as a mobile phone) to receive electric energy. With the development of wireless charging technology, the application of the wireless charging function in the terminal device is more and more popular, and the terminal device with the wireless charging function is very popular with users. However, in the prior art, when wireless charging is performed between terminal devices, the time required for wireless charging is still long, the charging efficiency is low, and the use of users is affected.

Disclosure of Invention

The embodiment of the invention provides transmitting end equipment, receiving end equipment and a wireless charging method, and aims to solve the problem of slow wireless charging in the prior art.

In order to solve the technical problems, the invention adopts the following technical scheme:

in a first aspect, a transmitting end device is provided, which includes:

a control chip for wireless charging;

a first transmission path connected with the control chip; and

at least one second transmission path connected with the control chip;

wherein each transmission path comprises: the device comprises a driving chip connected with the control chip, an inverter circuit connected with the driving chip and a transmitting coil connected with the inverter circuit.

In a second aspect, a receiving end device is provided, which includes:

a load circuit;

a first receive path connected to the load circuit; and

at least one second receive path connected to the load circuit;

wherein each receiving path comprises: the receiving chip is connected with the load circuit, and the receiving coil is connected with the receiving chip.

In a third aspect, a wireless charging method is provided, which is applied to the transmitting-end device described above, and the method includes:

establishing a first wireless charging path between a first transmitting path of the transmitting end equipment and a first receiving path of the receiving end equipment;

establishing a second wireless charging path between a second transmitting path of the transmitting end equipment and a second receiving path of the receiving end equipment;

and controlling the first wireless channel and the second wireless channel to wirelessly charge the receiving end equipment.

In a fourth aspect, a wireless charging method is provided, which is applied to the receiving-end device described above, and includes:

establishing a first wireless charging path between a first receiving path of the receiving end equipment and a first transmitting path of transmitting end equipment;

establishing a second wireless charging path between a second receiving path of the receiving end equipment and a second transmitting path of the transmitting end equipment;

wirelessly charging through the first wireless charging path and the second wireless charging path.

In a fifth aspect, a transmitting end device is provided, where the transmitting end device is the transmitting end device described above, and the transmitting end device further includes:

the first establishing module is used for establishing a first wireless charging path between a first transmitting path of the transmitting terminal equipment and a first receiving path of the receiving terminal equipment;

a second establishing module, configured to establish a second wireless charging path between a second transmitting path of the transmitting end device and a second receiving path of the receiving end device;

the first control module is used for controlling the first wireless access and the second wireless access to wirelessly charge the receiving end equipment.

In a sixth aspect, a receiving end device is provided, where the receiving end device is the receiving end device described above, and the receiving end device further includes:

a third establishing module, configured to establish a first wireless charging path between a first receiving path of the receiving end device and a first transmitting path of a transmitting end device;

a fourth establishing module, configured to establish a second wireless charging path between a second receiving path of the receiving end device and a second transmitting path of the transmitting end device;

and the second control module is used for controlling wireless charging through the first wireless charging path and the second wireless charging path.

In a seventh aspect, a transmitting end device is provided, including: a processor, a memory and a computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the wireless charging method as applied to a transmitting end device as described above.

In an eighth aspect, a computer-readable storage medium is provided, on which a computer program is stored, which, when executed by a processor, implements the steps of the wireless charging method applied to a transmitting-end device as described above.

In a ninth aspect, there is provided a receiving end device, including: a processor, a memory and a computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, implements the steps of the wireless charging method as applied to a receiving end device.

In a tenth aspect, a computer-readable storage medium is provided, on which a computer program is stored, which, when executed by a processor, implements the steps of the wireless charging method applied to a receiving-end device as described above.

In the embodiment of the invention, a plurality of parallel transmitting paths are arranged in transmitting end equipment, and a plurality of receiving paths matched with the transmitting paths are arranged in receiving end equipment. A wireless charging path can be established between each transmitting path and each receiving path, so that a plurality of parallel wireless charging paths can be formed to charge the same receiving terminal equipment, thereby greatly shortening the wireless charging time and improving the wireless charging efficiency.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.

Fig. 1 is a schematic structural diagram of a transmitting-end device according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a receiving end device according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram illustrating a transmitting end device and a receiving end device according to an embodiment of the present invention;

fig. 4 is a schematic flow chart of wireless charging establishment according to an embodiment of the present invention;

fig. 5 is a second schematic flow chart illustrating a wireless charging setup according to an embodiment of the invention;

fig. 6 is a second schematic structural diagram illustrating a transmitting device and a receiving device according to an embodiment of the present invention;

fig. 7 is a flowchart illustrating a wireless charging method applied to a transmitting-end device according to an embodiment of the present invention;

fig. 8 is a flowchart illustrating a wireless charging method applied to a receiving end device according to an embodiment of the present invention;

fig. 9 is a block diagram of a transmitting end device according to an embodiment of the present invention;

fig. 10 is a block diagram of a receiving end device according to an embodiment of the present invention;

fig. 11 shows a second block diagram of the receiving end device according to the embodiment of the present invention.

Detailed Description

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

According to an aspect of the embodiments of the present invention, a transmitting end device 100 is provided. The transmitting end device 100 may wirelessly charge other terminals (i.e., the receiving end device 200), and the transmitting end device 100 may be a wireless charger or a device capable of wirelessly charging other terminals.

As shown in fig. 1, the transmitting-end apparatus 100 includes: the wireless charging system comprises a control chip 101 for wireless charging, a first transmission path 102 connected with the control chip 101 and at least one second transmission path 103 connected with the control chip 101.

Wherein each transmission path comprises: the control circuit comprises a driving chip connected with the control chip 101, an inverter circuit connected with the driving chip and a transmitting coil connected with the inverter circuit.

The control chip 101 is responsible for controlling the voltage inversion behavior consisting of the driving chip, the inverter circuit and the transmitting coil, i.e. converting direct current into alternating current. The driving chip is responsible for increasing the driving capability of the control signal generated by the control chip 101 and then providing a larger driving control signal for the next-stage module. The inverter circuit is responsible for converting direct current into alternating current under the action of the driving control signal. The transmitting coil is used for generating an alternating magnetic field under the action of alternating current. The control chip 101, the driving chip, and the inverter circuit may be integrated on one module, or may be separate modules, and the specific situation may be designed according to actual requirements, which is not limited in the present invention.

In the embodiment of the present invention, the first transmission path 102 is parallel to the second transmission path 103, and each second transmission path 103 is also parallel, and through these parallel transmission paths, the same receiving end device 200 can be wirelessly charged at the same time, which greatly shortens the wireless charging time and improves the wireless charging efficiency.

As shown in fig. 2, in order to enable the receiving-end device 200 to be matched with the transmitting-end device 100, the receiving-end device 200 includes: a first receive path 202 connected to the load circuit 201 and at least one second receive path 203 connected to the load circuit 201. The first receiving path 202 is parallel to the second receiving path 203, and each second receiving path 203 is also parallel, and through the parallel receiving paths, the wireless charging of the same transmitting terminal device 100 can be received at the same time, so that the wireless charging time is greatly shortened, and the wireless charging efficiency is improved.

The number of the second receiving paths 203 is the same as the number of the second transmitting paths 103, and each second receiving path 203 corresponds to one second transmitting path 103.

As shown in fig. 3, when the transmitting end device 100 and the receiving end device 200 are wirelessly charged, a first wireless charging path 300 between the first transmitting path 102 of the transmitting end device 100 and the first receiving path 202 of the receiving end device 200 and a second wireless charging path 300 between the second transmitting path 103 of the transmitting end device 100 and the second receiving path 203 of the receiving end device 200 may be respectively established, and the receiving end device 200 is wirelessly charged through the first wireless path and the second wireless path.

Optionally, in the embodiment of the present invention, two schemes may be adopted to establish the wireless charging between the transmitting-end device 100 and the receiving-end device 200.

First, when the first Wireless charging path 300 is established, the establishment of the charging path may be implemented through message interaction performed through an in-band communication path established between the first transmitting path 102 and the first receiving path 202 according to a standard Wireless charging protocol, where the standard Wireless charging protocol may be a Wireless Power Consortium (WPC) Wireless charging standard.

The WPC wireless charging standard adopts in-band communication (namely, a wireless charging circuit is used for data communication information interaction), and the data communication information is loaded on a carrier wave in an amplitude modulation mode and a frequency modulation mode. In order to ensure the safety and reliability of wireless charging, a set of complete protocol flow with limited conditions is defined by the WPC wireless charging standard, and charging can be effectively established only if the wireless charging needs to meet the flow requirements of the protocol. In the process of power transmission, the receiving end device 200 needs to report the received power data, power control data, protection data, and the like to the transmitting end device 100.

As shown in fig. 4, according to the WPC wireless charging standard, a basic flow of establishing wireless charging is as follows:

1. the transmitting end device 100 sends a ping signal (i.e., a pairing signal), and a chip (e.g., a receiving chip) for driving the receiving end device 200 to perform wireless charging can normally operate.

2. After receiving the energy of the ping signal, the receiving-end device 200 transmits the signal strength of the received ping signal to the transmitting-end device 100.

3. After the transmitting-end device 100 confirms the signal strength of the ping signal received by the receiving-end device 200 and meets the preset signal strength, the receiving-end device 200 sends the verification information to the transmitting-end device 100.

4. After the verification information passes, the receiving end device 200 sends the configuration information to the sending end device.

5. After the configuration information passes, the receiving device 200 sends transmission power control information (e.g., at least one control error information) to the sending device.

6. And after the power control information is regulated and stabilized, starting to enter wireless energy transmission of the required power level.

The wireless charging is established by utilizing a standard charging protocol, the compatibility is strong, and wireless charging devices of different wireless charging manufacturers can be charged mutually.

After the first wireless charging path 300 is established according to a standard wireless charging protocol, the second wireless charging path 300 may be established according to a vendor-defined wireless charging protocol.

As shown in fig. 5, according to a customized wireless charging protocol, the basic flow of establishing wireless charging is as follows:

1. under the driving condition of the ping signal transmitted by the transmitting-side device 100, the receiving chip in the receiving-side device 200 is enabled to operate normally.

2. The receiving chip in the receiving end device 200 operates in the low power mode under the action of the ping signal to prevent the receiving chip from being burned down due to too much power.

3. When the charging power needs to be adjusted, the receiving end device 200 sends power adjustment information (i.e., power control information in the figure) to the transmitting end device 100, so that the transmitting end device 100 adjusts the power to implement power control. When the adjusted power still needs to be adjusted, the receiving end device 200 sends next power adjustment information to the transmitting end device 100, so that the transmitting end device 100 continues to adjust the power.

4. When power is sufficient, wireless energy transfer into the required power level is initiated.

The wireless charging is established by utilizing the self-defined charging protocol, and because the wireless charging is self-defined, manufacturers can define the wireless charging according to requirements, for example, the establishing process of the wireless charging is simplified, and the information interaction is reduced.

In the embodiment of the invention, the wireless charging is established by adopting two schemes, so that the standard wireless charging can be compatible, and the universality of the wireless charging is met; the wireless charging establishing process can be simplified through a self-defined charging protocol, the information interaction process is reduced, and the wireless charging establishing speed is increased.

Alternatively, in the receiving device 200, a Low Dropout Regulator (LDO) as an output terminal in the receiving chip operates under a Low Dropout condition (about 0.1V, in order to improve efficiency, the efficiency of the chip is lower when the voltage drop of the LDO is larger), that is, the output voltage Vrect of the rectifier connected to the LDO is about 0.1V higher than the output voltage Vout of the output terminal LDO. Because the WPC wireless charging standard employs in-band communication, i.e. amplitude modulation (ASK for short) and frequency modulation (FSK for short), when the amplitude of the modulated signal is greater than 0.1V (the amplitude of the modulated signal directly or indirectly falls on Vrect voltage), the voltage amplitude of the modulated signal will appear on Vout, and this voltage amplitude may not satisfy the input conditions of the back-end charging chip, such as: when the rear end is connected with the half-voltage charging chip, the ripple amplitude on the output voltage is too large, which may cause the half-voltage charging chip not to work normally, that is, the reliability of in-band communication is poor, and the performance of wireless charging is affected. In the existing WPC wireless charging standard, when a plurality of parallel wireless charging paths can be established between the transmitting-end device 100 and the receiving-end device 200, a separate in-band communication path must be established for information interaction for each wireless charging path. As shown in fig. 6, the establishment of the first wireless charging path 300 requires information exchange through the in-band communication path established between the first transmitting path 102 and the first receiving path 202, and the establishment of the second wireless charging path 300 requires information exchange through the in-band communication path established between the second transmitting path 103 and the second receiving path 203, which affects the charging stability.

In the embodiment of the present invention, in order to solve the above problem, when a plurality of wireless charging paths are established, a single in-band communication path may be shared for information interaction. When the first wireless charging path 300 and the second wireless charging path 300 are established, the message interaction of the wireless charging protocol is performed through the in-band communication path established between the first transmitting path 102 and the first receiving path 202, so that the number of in-band communication paths can be reduced, and the stability of wireless charging is improved.

Alternatively, when the in-band communication path is shared for information interaction, the first wireless charging path 300 may be established first, and then the second wireless charging path 300 may be established. When the second wireless charging path 300 is established, the receiving chip in the second receiving path 203 transmits the communication information to the receiving chip in the first receiving path 202 through the I2C interface, and transmits the communication information of the receiving-end device 200 to the transmitting-end device 100 through the in-band communication path established between the first receiving path 202 and the first transmitting path 102.

Optionally, as shown in fig. 1, the transmitting-end device 100 further includes: an out-of-band communication circuit 104 connected to the control chip 101. The out-of-band communication circuit 104 includes: the antenna module is connected with the wireless signal processing module.

In the embodiment of the present invention, in order to reduce the influence of in-band communication on wireless charging, an out-of-band communication circuit may be designed in the transmitting-end device 100, and similarly, an out-of-band communication circuit is also designed in the receiving-end device 200 (specifically, refer to the embodiment of the receiving-end device 200), so that when the first wireless charging path 300 and the second wireless charging path 300 are established, message interaction of a wireless charging protocol may be performed through the out-of-band communication path 500 established between the out-of-band communication circuit 104 in the transmitting-end device 100 and the out-of-band communication circuit 204 in the receiving-end device 200, so as to abandon the use of in-band communication, thereby improving the stability of wireless charging.

Of course, it is understood that, in the embodiment of the present invention, when the first wireless charging path 300 is established, the message interaction of the wireless charging protocol may also be performed through the in-band communication path established between the first transmitting path 102 and the first receiving path 202. When the second wireless charging path 300 is established, message interaction of the wireless charging protocol is performed through the out-of-band communication path 500 established between the out-of-band communication circuit 104 in the transmitting-end device 100 and the out-of-band communication circuit 204 in the receiving-end device 200.

Optionally, the wireless signal processing module described herein is a bluetooth module, a WIFI module, or a zigbee protocol module.

In summary, in the embodiment of the present invention, the first transmission path 102 is parallel to the second transmission path 103, and each second transmission path 103 is also parallel, and through these parallel transmission paths, the same receiving end device 200 can be wirelessly charged at the same time, which greatly shortens the wireless charging time and improves the wireless charging efficiency. In addition, in the embodiment of the present invention, by sharing the in-band communication path or using the out-of-band communication path 500, the influence of the ripple voltage generated during in-band communication on wireless charging is reduced, and the stability of wireless charging is improved. Furthermore, in the embodiment of the invention, two schemes can be adopted to establish wireless charging, so that the wireless charging can be compatible with standard wireless charging, and the universality of wireless charging is met; the wireless charging establishing process can be simplified through a self-defined charging protocol, the information interaction process is reduced, and the wireless charging establishing speed is increased.

According to another aspect of the embodiments of the present invention, there is provided a wireless charging method applied to the transmitting-end device as described above.

As shown in fig. 7, the wireless charging method includes:

step 701: a first wireless charging path between a first transmit path of a transmitting end device and a first receive path of a receiving end device is established.

Step 702: and establishing a second wireless charging path between a second transmitting path of the transmitting end device and a second receiving path of the receiving end device.

Step 703: and controlling the first wireless channel and the second wireless channel to wirelessly charge the receiving end equipment.

In the embodiment of the present invention, a plurality of parallel transmission paths (i.e., a first transmission path and a second transmission path) are provided in the transmitting end device, and a plurality of receiving paths (i.e., a first receiving path and a second receiving path) matched with the transmission paths are provided in the receiving end device. A wireless charging path can be established between each transmitting path and each receiving path, so that a plurality of parallel wireless charging paths can be formed to charge the same receiving terminal equipment, thereby greatly shortening the wireless charging time and improving the wireless charging efficiency.

Optionally, in the embodiment of the present invention, two schemes may be adopted to establish wireless charging between the transmitting end device and the receiving end device.

First, when a first Wireless charging path is established, the establishment of the charging path may be implemented according to a standard Wireless charging protocol, and through message interaction performed through an in-band communication path established between a first transmitting path and a first receiving path, where the standard Wireless charging protocol may be a Wireless Power Consortium (WPC) Wireless charging standard.

The WPC wireless charging standard adopts in-band communication (namely, a wireless charging circuit is used for data communication information interaction), and the data communication information is loaded on a carrier wave in an amplitude modulation mode and a frequency modulation mode. In order to ensure the safety and reliability of wireless charging, a set of complete protocol flow with limited conditions is defined by the WPC wireless charging standard, and charging can be effectively established only if the wireless charging needs to meet the flow requirements of the protocol. In the process of power transmission, the receiving end device needs to report the received power data, power control data, protection data and the like to the transmitting end device.

1. the transmitting end device sends ping signals (namely pairing signals), and a chip (such as a receiving chip) used for wireless charging of the receiving end device is driven to work normally.

2. And after receiving end equipment receives the energy of the ping signal, sending the signal strength of the received ping signal to transmitting end equipment.

3. After the transmitting terminal equipment confirms the signal strength of the ping signal received by the receiving terminal equipment and meets the preset signal strength, the receiving terminal equipment sends verification information to the transmitting terminal equipment.

4. And after the verification information passes, the receiving end equipment sends the configuration information to the sending end equipment.

5. After the configuration information passes, the receiving end device sends transmission power control information (e.g., at least one control error information) to the sending end device.

After the first wireless charging path is established according to a standard wireless charging protocol, a second wireless charging path may be established according to a vendor-defined wireless charging protocol.

1. under the driving condition of the ping signal transmitted by the transmitting terminal equipment, the receiving chip in the receiving terminal equipment can work normally.

2. Under the action of ping signal, the receiving chip in the receiving end device firstly works in low power mode to avoid burning the receiving chip due to too much power.

3. When the charging power needs to be adjusted, the receiving end device sends power adjustment information (i.e., power control information in the figure) to the transmitting end device, so that the transmitting end device adjusts the power to realize power control. When the adjusted power needs to be adjusted continuously, the receiving end device sends next power adjustment information to the transmitting end device, so that the transmitting end device can adjust the power continuously.

Alternatively, in the receiving device, the LDO (Low Dropout Regulator) as the output terminal in the receiving chip operates in a Low Dropout condition (about 0.1V, in order to improve efficiency, the efficiency of the chip is lower when the voltage drop of the LDO is larger), that is, the output voltage Vrect of the rectifier connected to the LDO is about 0.1V higher than the output voltage Vout of the output terminal LDO. Because the WPC wireless charging standard employs in-band communication, i.e. amplitude modulation (ASK for short) and frequency modulation (FSK for short), when the amplitude of the modulated signal is greater than 0.1V (the amplitude of the modulated signal directly or indirectly falls on Vrect voltage), the voltage amplitude of the modulated signal will appear on Vout, and this voltage amplitude may not satisfy the input conditions of the back-end charging chip, such as: when the rear end is connected with the half-voltage charging chip, the ripple amplitude on the output voltage is too large, which may cause the half-voltage charging chip not to work normally, that is, the reliability of in-band communication is poor, and the performance of wireless charging is affected. In the existing WPC wireless charging standard, when a plurality of parallel wireless charging paths can be established between a transmitting end device and a receiving end device, each wireless charging path must be established with a separate in-band communication path for information interaction. As shown in fig. 6, the establishment of the first wireless charging path requires information interaction through the in-band communication path established between the first transmitting path and the first receiving path, and the establishment of the second wireless charging path requires information interaction through the in-band communication path established between the second transmitting path and the second receiving path, which affects the charging stability.

In the embodiment of the present invention, in order to solve the above problem, when a plurality of wireless charging paths are established, a single in-band communication path may be shared for information interaction. If the first wireless charging path and the second wireless charging path are established, the message interaction of the wireless charging protocol is carried out through the in-band communication path established between the first transmitting path and the first receiving path, so that the number of the in-band communication paths can be reduced, and the stability of wireless charging is improved.

Optionally, when the in-band communication path is shared for information interaction, the first wireless charging path may be established first, and then the second wireless charging path may be established. When the second wireless charging path is established, the receiving chip in the first receiving path and the receiving chip in the second receiving path may perform message interaction of a wireless charging protocol through an I2C bus, that is, the receiving chip in the second receiving path transmits communication information to the receiving chip in the first receiving path through an I2C interface, and then the communication information of the receiving end device is transmitted to the transmitting end device through an in-band communication path established between the first receiving path and the first transmitting path.

Optionally, as shown in fig. 1, the transmitting end device further includes: and the out-of-band communication circuit is connected with the control chip. The out-of-band communication circuit includes: the antenna module is connected with the wireless signal processing module. The wireless signal processing module is a Bluetooth module, a WIFI module or a purple peak protocol module.

In the embodiment of the present invention, in order to reduce the influence of in-band communication on wireless charging, an out-of-band communication circuit may be designed in the transmitting end device, and similarly, an out-of-band communication circuit is also designed in the receiving end device (see specifically the embodiment of the receiving end device), so that when a wireless charging path is established, message interaction of a wireless charging protocol may be performed through the out-of-band communication path established between the out-of-band communication circuit in the transmitting end device and the out-of-band communication circuit in the receiving end device, so as to abandon the use of in-band communication, thereby improving the stability of wireless charging.

For example, when the first wireless charging path and the second wireless charging path are established, both of them use the out-of-band communication path to perform message interaction of the wireless charging protocol, and the method includes:

step 701 establishes a first wireless charging path between a first transmitting path of a transmitting end device and a first receiving path of a receiving end device, including:

and establishing a first wireless charging path between the first transmitting path and the first receiving path according to the message interaction of the wireless charging protocol between the out-of-band communication path and the first receiving path of the receiving end equipment.

The out-of-band communication path described herein is a communication path established between an out-of-band communication circuit in a transmitting end device and an out-of-band communication circuit in a receiving end device.

Step 702 establishes a second wireless charging path between a second transmitting path of the transmitting end device and a second receiving path of the receiving end device, including:

and establishing a second wireless charging path between the second transmitting path and the second receiving path according to the message interaction of the wireless charging protocol between the out-of-band communication path and the second receiving path of the receiving end equipment.

It is of course understood that: when a first wireless charging path is established, an in-band communication path is adopted for message interaction of a wireless charging protocol; when the second wireless charging path is established, the out-of-band communication path is adopted to perform message interaction of the wireless charging protocol, and the method comprises the following steps:

and establishing a first wireless charging path between the first transmitting path and the first receiving path according to the message interaction of the wireless charging protocol between the in-band communication path and the first receiving path of the receiving end equipment.

The in-band communication path described herein is a communication path established between the first transmission path and the first reception path.

In summary, in the embodiments of the present invention, the transmitting end device is provided with a plurality of parallel transmitting paths, and the receiving end device is provided with a plurality of receiving paths matched with the transmitting paths. A wireless charging path can be established between each transmitting path and each receiving path, so that a plurality of parallel wireless charging paths can be formed to charge the same receiving terminal equipment, thereby greatly shortening the wireless charging time and improving the wireless charging efficiency. In addition, in the embodiment of the invention, the influence of ripple voltage generated in-band communication on wireless charging is reduced and the stability of wireless charging is improved by sharing the in-band communication path or using the out-of-band communication path. Furthermore, in the embodiment of the invention, two schemes can be adopted to establish wireless charging, so that the wireless charging can be compatible with standard wireless charging, and the universality of wireless charging is met; the wireless charging establishing process can be simplified through a self-defined charging protocol, the information interaction process is reduced, and the wireless charging establishing speed is increased.

According to another aspect of the embodiment of the present invention, a receiving end device 200 is provided. The receiving end device 200 may receive the wireless charging of another terminal (i.e., the transmitting end device 100), and the receiving end device 200 may be a mobile phone, a platform computer, or other terminal device capable of performing wireless charging.

As shown in fig. 1, the receiving-end apparatus 200 includes: a load circuit 201, a first receive path 202 connected to the load circuit 201, and at least one second receive path 203 connected to the load circuit 201.

Wherein each receiving path comprises: a receiver chip connected to the load circuit 201, and a receiver coil connected to the receiver chip.

The receiving coil converts the magnetic energy into electric energy to generate alternating current under the action of the alternating magnetic field generated by the transmitting coil in the transmitting terminal device 100. The receiving chip is responsible for converting the alternating current into the direct current, outputting the direct current to supply to the load circuit 201, and charging a load (such as a battery) on the load circuit 201.

In the embodiment of the present invention, the first receiving path 202 is parallel to the second receiving path 203, and each second receiving path 203 is also parallel, and through these parallel receiving paths, the wireless charging of the same transmitting end device 100 can be received at the same time, which greatly shortens the wireless charging time and improves the wireless charging efficiency.

As shown in fig. 1, in order to enable the transmitting-end device 100 and the receiving-end device 200 to be matched, the transmitting-end device 100 includes: the wireless charging system comprises a control chip 101 for wireless charging, a first transmission path 102 connected with the control chip 101 and at least one second transmission path 103 connected with the control chip 101. The first transmitting path 102 is parallel to the second transmitting paths 103, and each second transmitting path 103 is also parallel, and through the parallel transmitting paths, the same receiving end device 200 can be wirelessly charged at the same time, so that the wireless charging time is greatly shortened, and the wireless charging efficiency is improved.

The number of the second transmitting paths 103 is the same as the number of the second receiving paths 203, and each second transmitting path 103 corresponds to one second receiving path 203.

In the embodiment of the invention, the wireless charging is established by adopting two schemes, so that the standard wireless charging can be compatible, and the universality of the wireless charging is met; the wireless charging method can also simplify the establishment process of wireless charging, reduce information interaction and improve the establishment speed of wireless charging through a self-defined charging protocol.

Alternatively, in the receiving device 200, a Low Dropout Regulator (LDO) as an output terminal in the receiving chip operates under a Low Dropout condition (about 0.1V, in order to improve efficiency, the efficiency of the chip is lower when the voltage drop of the LDO is larger), that is, the output voltage Vrect of the rectifier connected to the LDO is about 0.1V higher than the output voltage Vout of the output terminal LDO. Because the WPC wireless charging standard employs in-band communication, i.e. amplitude modulation (ASK for short) and frequency modulation (FSK for short), when the amplitude of the modulated signal is greater than 0.1V (the amplitude of the modulated signal directly or indirectly falls on Vrect voltage), the voltage amplitude of the modulated signal will appear on Vout, and this voltage amplitude may not satisfy the input conditions of the back-end charging chip, such as: when the rear end is connected with the half-voltage charging chip, the ripple amplitude on the output voltage is too large, which may cause the half-voltage charging chip not to work normally, that is, the reliability of in-band communication is poor, and the performance of wireless charging is affected. In the existing WPC wireless charging standard, when a plurality of parallel wireless charging paths are established between the transmitting-side device 100 and the receiving-side device 200, a separate in-band communication path must be established for information interaction for each wireless charging path. As shown in fig. 6, the establishment of the first wireless charging path 300 requires information exchange through the in-band communication path established between the first transmitting path 102 and the first receiving path 202, and the establishment of the second wireless charging path 300 requires information exchange through the in-band communication path established between the second transmitting path 103 and the second receiving path 203, which affects the charging stability.

Alternatively, when the in-band communication path is shared for information interaction, the first wireless charging path 300 may be established first, and then the second wireless charging path 300 may be established. When the second wireless charging path 300 is established, the receiving chip in the first receiving path 202 and the receiving chip in the second receiving path 203 may perform message interaction of a wireless charging protocol through an I2C bus, that is, the receiving chip in the second receiving path 203 transmits communication information to the receiving chip in the first receiving path 202 through an I2C interface, and then transmits the communication information of the receiving end device 200 to the transmitting end device 100 through an in-band communication path established between the first receiving path 202 and the first transmitting path 102.

Optionally, as shown in fig. 1, the receiving end device 200 further includes: an out-of-band communication circuit 204 connected to the receive chip. The out-of-band communication circuit 204 includes: the antenna module is connected with the wireless signal processing module. The receiving chip described herein includes at least: the receiving chip in the second receiving path 203 may, of course, also include the receiving chip in the first receiving path 202.

In the embodiment of the present invention, in order to reduce the influence of in-band communication on wireless charging, an out-of-band communication circuit may be designed in the transmitting end device 100, and similarly, an out-of-band communication circuit is also designed in the transmitting end device 100 (see specifically the embodiment of the transmitting end device 100), so that when the first wireless charging path 300 and the second wireless charging path 300 are established, message interaction of a wireless charging protocol may be performed through the out-of-band communication path 500 established between the out-of-band communication circuit 104 in the transmitting end device 100 and the out-of-band communication circuit 204 in the receiving end device 200, so as to abandon the use of in-band communication, thereby improving the stability of wireless charging.

Optionally, in this embodiment of the present invention, the receiving end device 200 further includes: the wireless signal processing module is also connected with the control chip so that the control chip controls the wireless signal processing module.

In summary, in the embodiment of the present invention, the first receiving path 202 is parallel to the second receiving path 203, and each second receiving path 203 is also parallel, and through these parallel receiving paths, the wireless charging of the same transmitting end device 100 can be received at the same time, so that the wireless charging time is greatly shortened, and the wireless charging efficiency is improved. In addition, in the embodiment of the present invention, by sharing the in-band communication path or using the out-of-band communication path 500, the influence of the ripple voltage generated during in-band communication on wireless charging is reduced, and the stability of wireless charging is improved. Furthermore, in the embodiment of the invention, two schemes can be adopted to establish wireless charging, so that the wireless charging can be compatible with standard wireless charging, and the universality of wireless charging is met; the wireless charging establishing process can be simplified through a self-defined charging protocol, the information interaction process is reduced, and the wireless charging establishing speed is increased.

According to another aspect of the embodiments of the present invention, there is provided a wireless charging method applied to the receiving end device as described above.

As shown in fig. 8, the wireless charging method includes:

step 801: a first wireless charging path between a first receiving path of a receiving end device and a first transmitting path of a transmitting end device is established.

Step 802: and establishing a second wireless charging path between a second receiving path of the receiving end equipment and a second transmitting path of the transmitting end equipment.

Step 803: and performing wireless charging through the first wireless charging path and the second wireless charging path.

Optionally, when the in-band communication path is shared for information interaction, the first wireless charging path may be established first, and then the second wireless charging path may be established. When the second wireless charging path is established, the receiving chip in the first receiving path and the receiving chip in the second receiving path may perform message interaction of a wireless charging protocol through an I2C bus, that is, the receiving chip in the second receiving path transmits communication information to the receiving chip in the first receiving path through an I2C interface, and transmits communication information of the receiving end device to the transmitting end device through an in-band communication path established between the first receiving path and the first transmitting path.

Optionally, as shown in fig. 2, the receiving end device further includes: and an out-of-band communication circuit connected to the receiving chip. The out-of-band communication circuit includes: the antenna module is connected with the wireless signal processing module. The wireless signal processing module is a Bluetooth module, a WIFI module or a purple peak protocol module. The receiving chip described herein includes at least: the receiving chip in the second receiving path 203 may, of course, also include the receiving chip in the first receiving path 202.

step 801 is to establish a first wireless charging path between a first receiving path of a receiving end device and a first transmitting path of a transmitting end device, including:

and establishing a first wireless charging path between the first receiving path and the first transmitting path according to the message interaction of the wireless charging protocol between the out-of-band communication path and the first transmitting path of the transmitting terminal equipment.

Step 802 establishes a second wireless charging path between a second receiving path of the receiving end device and a second transmitting path of the transmitting end device, including:

and establishing a second wireless charging path between the second receiving path and the second transmitting path according to the message interaction of the wireless charging protocol between the out-of-band communication path and the second transmitting path of the transmitting terminal equipment.

and establishing a first wireless charging path between the first receiving path and the first transmitting path according to the message interaction of the wireless charging protocol between the in-band communication path and the first transmitting path of the transmitting terminal equipment.

and establishing a second wireless charging path between a second receiving path and a second transmitting path according to the message interaction of the wireless charging protocol between the out-of-band communication path and the second transmitting path of the transmitting terminal equipment.

According to an aspect of the embodiments of the present invention, there is provided a transmitting end device, where the transmitting end device is the transmitting end device described in the above embodiments, and details of the wireless charging method applied to the transmitting end device side can be implemented, and the same effect can be achieved.

As shown in fig. 9, the transmitting end device further includes:

a first establishing module 901, configured to establish a first wireless charging path between a first transmitting path of the transmitting end device and a first receiving path of a receiving end device.

A second establishing module 902, configured to establish a second wireless charging path between a second transmitting path of the transmitting end device and a second receiving path of the receiving end device.

A first control module 903, configured to control the first wireless path and the second wireless path to wirelessly charge the receiving end device.

Optionally, the transmitting end device further includes: an out-of-band communication circuit connected to the control chip, the out-of-band communication circuit comprising: the antenna module is connected with the wireless signal processing module.

Optionally, the second establishing module 902 includes:

the first establishing submodule is used for establishing a second wireless charging path between the second transmitting path and the second receiving path according to the message interaction of the wireless charging protocol between the second transmitting path and the second receiving path of the receiving end equipment.

The second transmitting path and the second receiving path perform message interaction of a wireless charging protocol through an in-band communication path or an out-of-band communication path; the in-band communication path is a communication path established between the first transmitting path and the first receiving path; the out-of-band communication path is a communication path established between an out-of-band communication circuit in the transmitting end device and an out-of-band communication circuit in the receiving end device.

Optionally, the first establishing module 901 includes:

the second establishing submodule is used for establishing a first wireless charging path between the first transmitting path and the first receiving path according to message interaction of a wireless charging protocol between an out-of-band communication path and the first receiving path of the receiving end equipment.

The out-of-band communication path is a communication path established between an out-of-band communication circuit in the receiving end device and an out-of-band communication circuit in the transmitting end device.

In the embodiment of the invention, the first transmitting path and the second transmitting path are parallel, and each second transmitting path is also parallel, so that the same receiving end equipment can be wirelessly charged through the parallel transmitting paths, the wireless charging time is greatly shortened, and the wireless charging efficiency is improved. In addition, in the embodiment of the invention, the influence of ripple voltage generated in-band communication on wireless charging is reduced and the stability of wireless charging is improved by sharing the in-band communication path or using the out-of-band communication path.

According to an aspect of the embodiments of the present invention, there is provided a receiving end device, where the receiving end device is the receiving end device described in the above embodiments, and details of the wireless charging method applied to the receiving end device side can be implemented, and the same effect can be achieved.

As shown in fig. 10, the receiving-end apparatus further includes:

a third establishing module 1001, configured to establish a first wireless charging path between the first receiving path of the receiving end device and the first transmitting path of the transmitting end device.

A fourth establishing module 1002, configured to establish a second wireless charging path between a second receiving path of the receiving end device and a second transmitting path of the transmitting end device.

The second control module 1003 is configured to control wireless charging through the first wireless charging path and the second wireless charging path.

Optionally, the receiving end device further includes: an out-of-band communication circuit connected to each of the receive chips, the out-of-band communication circuit comprising: the antenna module is connected with the wireless signal processing module.

Optionally, the fourth establishing module 1002 includes:

and the third establishing submodule is used for establishing a second wireless charging path between the second transmitting path and the second receiving path according to the message interaction of the wireless charging protocol between the second receiving path and the second transmitting path of the transmitting terminal equipment.

The second receiving path and the second transmitting path perform message interaction of a wireless charging protocol through an in-band communication path or an out-of-band communication path; the in-band communication path is a communication path established between the first transmitting path and the first receiving path; the out-of-band communication path is a communication path established between an out-of-band communication circuit in the receiving end device and an out-of-band communication circuit in the transmitting end device.

Optionally, the third establishing module 1001 includes:

and the fourth establishing submodule is used for establishing a first wireless charging path between the first receiving path and the first transmitting path according to the message interaction of the wireless charging protocol between the out-of-band communication path and the first transmitting path of the transmitting terminal equipment.

In the embodiment of the invention, the first receiving path and the second receiving path are parallel, and each second receiving path is parallel, so that the wireless charging of the same transmitting terminal equipment can be simultaneously received through the parallel receiving paths, the wireless charging time is greatly shortened, and the wireless charging efficiency is improved. In addition, in the embodiment of the invention, the influence of ripple voltage generated in-band communication on wireless charging is reduced and the stability of wireless charging is improved by sharing the in-band communication path or using the out-of-band communication path.

Fig. 11 is a schematic diagram of a hardware structure of a receiving end device for implementing various embodiments of the present invention.

The sink device 1100 includes, but is not limited to: radio frequency unit 1101, network module 1102, audio output unit 1103, input unit 1104, sensor 1105, display unit 1106, user input unit 1107, interface unit 1108, memory 1109, processor 1110, and power supply 1111. Those skilled in the art will appreciate that the receiver-side device configuration shown in fig. 11 does not constitute a limitation of the receiver-side device, and that the receiver-side device may include more or fewer components than shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the receiving end device includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.

A processor 1110, configured to establish a first wireless charging path between a first receiving path of the receiving end device and a first transmitting path of a transmitting end device; establishing a second wireless charging path between a second receiving path of the receiving end equipment and a second transmitting path of the transmitting end equipment; wirelessly charging through the first wireless charging path and the second wireless charging path.

It should be understood that, in the embodiment of the present invention, the radio frequency unit 1101 may be configured to receive and transmit signals during a message transmission or a call, and specifically, receive downlink data from a base station and then process the received downlink data to the processor 1110; in addition, the uplink data is transmitted to the base station. In general, radio frequency unit 1101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 1101 may also communicate with a network and other devices through a wireless communication system.

The receiving device provides wireless broadband internet access to the user through the network module 1102, such as helping the user send and receive e-mails, browse webpages, access streaming media, and the like.

The audio output unit 1103 may convert audio data received by the radio frequency unit 1101 or the network module 1102 or stored in the memory 1109 into an audio signal and output as sound. Also, the audio output unit 1103 may also provide audio output related to a specific function performed by the sink device 1100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 1103 includes a speaker, a buzzer, a receiver, and the like.

The input unit 1104 is used to receive audio or video signals. The input Unit 1104 may include a Graphics Processing Unit (GPU) 11041 and a microphone 11042, and the Graphics processor 11041 processes image data of still pictures or video obtained by an image capturing device, such as a camera, in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 1106. The image frames processed by the graphic processor 11041 may be stored in the memory 1109 (or other storage medium) or transmitted via the radio frequency unit 1101 or the network module 1102. The microphone 11042 may receive sound and can process such sound into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 1101 in case of the phone call mode.

The sink device 1100 also includes at least one sensor 1105, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that adjusts the brightness of the display panel 11061 according to the brightness of ambient light, and a proximity sensor that turns off the display panel 11061 and/or the backlight when the receiving-end device 1100 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the posture of the receiving end device (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), and vibration identification related functions (such as pedometer and tapping); the sensors 1105 may also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., and will not be described in detail herein.

The display unit 1106 is used to display information input by a user or information provided to the user. The Display unit 1106 may include a Display panel 11061, and the Display panel 11061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 1107 may be used to receive input numeric or character information and generate key signal inputs associated with user settings and function control of the sink device. Specifically, the user input unit 1107 includes a touch panel 11071 and other input devices 11072. The touch panel 11071, also referred to as a touch screen, may collect touch operations by a user on or near the touch panel 11071 (e.g., operations by a user on or near the touch panel 11071 using a finger, a stylus, or any other suitable object or attachment). The touch panel 11071 may include two portions of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, and sends the touch point coordinates to the processor 1110, and receives and executes commands sent from the processor 1110. In addition, the touch panel 11071 may be implemented by various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. The user input unit 1107 may include other input devices 11072 in addition to the touch panel 11071. In particular, the other input devices 11072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.

Further, the touch panel 11071 can be overlaid on the display panel 11061, and when the touch panel 11071 detects a touch operation thereon or nearby, the touch operation is transmitted to the processor 1110 to determine the type of the touch event, and then the processor 1110 provides a corresponding visual output on the display panel 11061 according to the type of the touch event. Although the touch panel 11071 and the display panel 11061 are shown in fig. 11 as two independent components to implement the input and output functions of the receiving device, in some embodiments, the touch panel 11071 and the display panel 11061 may be integrated to implement the input and output functions of the receiving device, and the implementation is not limited herein.

The interface unit 1108 is an interface for connecting an external device to the sink apparatus 1100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 1108 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the sink apparatus 1100 or may be used to transmit data between the sink apparatus 1100 and an external device.

The memory 1109 may be used to store software programs as well as various data. The memory 1109 may mainly include a storage program area and a storage data area, where the storage program area may store an operating system, an application program (such as a sound playing function, an image playing function, etc.) required by at least one function, and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. In addition, the memory 1109 may include high speed random access memory and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 1110 is a control center of the sink device, connects various parts of the entire sink device by using various interfaces and lines, and performs various functions and processes of the sink device by operating or executing software programs and/or modules stored in the memory 1109 and calling data stored in the memory 1109, thereby integrally monitoring the sink device. Processor 1110 may include one or more processing units; preferably, the processor 1110 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 1110.

The sink device 1100 may further include a power supply 1111 (e.g., a battery) for supplying power to various components, and preferably, the power supply 1111 may be logically connected to the processor 1110 through a power management system, so as to manage charging, discharging, and power consumption management functions through the power management system.

In addition, the receiving end device 1100 includes some functional modules that are not shown, and are not described in detail here.

Preferably, an embodiment of the present invention further provides a receiving end device, which includes a processor 1110, a memory 1109, and a computer program that is stored in the memory 1109 and is executable on the processor 1110, where the computer program, when executed by the processor 1110, implements each process of the wireless charging method embodiment applied to the receiving end device, and can achieve the same technical effect, and is not described herein again to avoid repetition.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the wireless charging method embodiment applied to the receiving end device, and can achieve the same technical effect, and in order to avoid repetition, the detailed description is omitted here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a receiving device (e.g., a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A transmitting-end device, comprising:

a control chip for wireless charging;

a first transmission path connected with the control chip; and

at least one second transmission path connected with the control chip;

wherein each transmission path comprises: the driving chip is connected with the control chip, the inverter circuit is connected with the driving chip, and the transmitting coil is connected with the inverter circuit;

an out-of-band communication circuit connected to the control chip, the out-of-band communication circuit comprising: the antenna module is connected with the wireless signal processing module;

the second transmitting path carries out message interaction of a wireless charging protocol through an in-band communication path or an out-of-band communication path; the first transmit path is in communication with the in-band communication path and the out-of-band communication circuit is in communication with the out-of-band communication path when the message interaction is performed.

2. The transmitting-end device of claim 1, wherein the wireless signal processing module is a bluetooth module, a WIFI module or a zigbee protocol module.

3. A receiving-end device, comprising:

a load circuit;

a first receive path connected to the load circuit; and

at least one second receive path connected to the load circuit;

wherein each receiving path comprises: the receiving chip is connected with the load circuit, and the receiving coil is connected with the receiving chip;

an out-of-band communication circuit coupled to the receive chip, the out-of-band communication circuit comprising: the antenna module is connected with the wireless signal processing module;

the second receiving path carries out message interaction of a wireless charging protocol through an in-band communication path or an out-of-band communication path; the first receive path is in communication with the in-band communication path and the out-of-band communication circuit is in communication with the out-of-band communication path when the message interaction is performed.

4. The receiving-end device of claim 3, wherein the wireless signal processing module is a Bluetooth module, a WIFI module, or a Violet protocol module.

5. The receiving-end device of claim 3, wherein the receiving chip in the first receiving path performs message interaction of a wireless charging protocol with the receiving chip in the second receiving path through an I2C bus.

6. A wireless charging method applied to the transmitting-end device according to any one of claims 1 to 2, the method comprising:

and controlling the first wireless charging path and the second wireless charging path to wirelessly charge the receiving end equipment.

7. The method of claim 6, wherein the transmitting end device further comprises: an out-of-band communication circuit connected to the control chip, the out-of-band communication circuit comprising: the antenna module is connected with the wireless signal processing module;

the establishing of the second wireless charging path between the second transmitting path of the transmitting end device and the second receiving path of the receiving end device includes:

establishing a second wireless charging path between the second transmitting path and a second receiving path of the receiving end equipment according to the message interaction of the wireless charging protocol between the second transmitting path and the second receiving path;

8. A wireless charging method applied to the receiving-end device according to any one of claims 3 to 5, the method comprising:

9. The method according to claim 8, wherein the receiving end device further comprises: an out-of-band communication circuit connected to each of the receive chips, the out-of-band communication circuit comprising: the antenna module is connected with the wireless signal processing module;

the establishing of the second wireless charging path between the second receiving path of the receiving end device and the second transmitting path of the transmitting end device includes:

establishing a second wireless charging path between the second transmitting path and the second receiving path according to the message interaction of the wireless charging protocol between the second receiving path and the second transmitting path of the transmitting terminal equipment;

10. A transmitting end device, characterized in that the transmitting end device is the transmitting end device of any one of claims 1 to 2, and the transmitting end device further comprises:

the first control module is used for controlling the first wireless charging path and the second wireless charging path to wirelessly charge the receiving end equipment.

11. A sink device according to any one of claims 3 to 5, wherein the sink device further includes: