WO2022057320A1 - Wireless charging method and wireless charging system - Google Patents

Abstract

Embodiments of the present application relate to the field of wireless charging. Disclosed are a wireless charging method and a wireless charging system, capable of solving the problems in existing wireless charging solutions of long charging time and incapability in ensuring that power receiving devices quickly enter a working state. The specific solution is: a power supply device controls an antenna array to emit first electromagnetic waves in a first area, power receiving devices being located within the first area; the power receiving devices receive the first electromagnetic waves and are charged by the first electromagnetic waves; the power receiving devices send first messages to the power supply device, the first messages being used for indicating the positions of the power receiving devices in the first area; and the power supply device receives the first message and emits, according to the first message, second electromagnetic waves in a second area, the second area comprising the positions of the power receiving devices, and the second area being smaller than the first area.

Description

A wireless charging method and wireless charging system

This application claims the priority of the Chinese patent application with the application number 202010981142.6 and the application title "A wireless charging method and wireless charging system" filed with the State Intellectual Property Office on September 17, 2020, the entire contents of which are incorporated by reference in in this application.

technical field

The embodiments of the present application relate to the field of wireless charging, and in particular, to a wireless charging method and a wireless charging system.

Background technique

At present, sensors (such as smoke sensors, temperature/humidity sensors, etc.) have been widely used in scenarios such as smart homes. The sensor is generally an electronic device, which consumes energy during its operation, so it is necessary to supply power to the sensor to ensure its normal operation. Generally speaking, the sensor can be powered through a power supply cable connected to the sensor by means of wired power supply. However, with the miniaturization of sensors and the rapid increase in the number of sensors used, it has become difficult to lay a power supply cable for wired power supply to each sensor. In addition, it can also be powered by a built-in battery in the sensor, but the battery will cause the sensor to be too bulky, and there is a problem of replacement and maintenance when the battery is low.

In order to deal with the above problems, a wireless charging solution can be used to supply power to multiple different sensors to support the normal operation of the sensors. However, the current wireless charging solution has the problem that the charging time is long, and it cannot ensure that the power receiving device can quickly enter the working state.

SUMMARY OF THE INVENTION

The embodiments of the present application provide a wireless charging method and a wireless charging system, which solve the problem that the existing wireless charging solution has long precharging time and charging time, and cannot ensure that the power receiving end device quickly enters the working state.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

In a first aspect, a wireless charging method is provided, which is applied to a wireless charging system. The wireless charging system includes a power receiving end device and a power supply end device. An antenna array is arranged in the power supply end device. The method includes: the power supply end device controls the antenna. The antenna array is made to emit electromagnetic waves to the first area in a concentrated manner. In some implementations, the electromagnetic waves in the first region can cause the power receiving end device to receive the first electromagnetic waves and perform charging through the first electromagnetic waves. The power receiving end device sends a first message to the power supplying end device, where the first message is used to indicate a location of the power receiving end device in the first area. In this example, the power supply end device receives the first message, and according to the first message, transmits a second electromagnetic wave in a second area, the second area includes the position of the power receiving end device, and the second area is smaller than the first area.

Based on this solution, the power supply end device can wirelessly charge the power receiving end device in a relatively large range by emitting the first electromagnetic wave in a large first area, so that the power receiving end device can quickly feedback to the power supply end device The first message that can be used to indicate the location of each power receiving end device. The power supply device can then wirelessly charge each power receiver device one by one according to the location of different power receiver devices. For example, wireless charging can be performed to one of multiple power receiver devices through full-power radiation through a directional beam. In this way, the power receiving end device to be powered can be quickly charged, and then quickly enter a normal working state, thereby significantly reducing the precharging time and the charging time of the power receiving end device. Among them, in this example, the precharge time can be the length of time from when the power receiving end device is ready to work until it starts working normally for the first time, and the power replenishment time can be the time between the two adjacent normal operations of the power receiving end device. electricity time. It should be understood that when the power supply device needs to wirelessly charge multiple power receiver devices, the charging mechanism of other power receiver devices is similar to the power receiver device in the above example, so similar effects can be achieved. That is to say, the solution provided in this example can reduce the pre-charging time and the charging time of all the power receiving end devices, thereby achieving the purpose of enabling all the power receiving end devices that need to be wirelessly charged to quickly enter the normal working state.

In a possible design, the first area is the maximum coverage area of the antenna array. Based on this solution, the power supply terminal equipment can wirelessly charge all the power receiving terminal equipment within its maximum capability range. It should be noted that, for the power receiving end device, the power required to send the first message is very small. Therefore, in this example, the power supply end device does not need to perform fast and efficient wireless communication for the power receiving end device through the directional beam. Instead, use wireless charging with a wider range to cover more power-receiving devices. As a result, when the power receiving end device is a plurality of devices, the efficiency of the power supply end device acquiring the position of each power receiving end device is improved.

In a possible design, the power supply device controlling the antenna array to emit the first electromagnetic wave in the first area includes: the power supply device controlling the antenna array to emit the first electromagnetic wave with full power in the first area. Based on this solution, the power supply device can wirelessly charge each power receiver device more quickly while covering more power receiver devices, so that each power receiver device can send the first message as soon as possible.

In a possible design, the power receiving end device sends the first message to the power supplying end device, which includes: in the case that the power of the power receiving end device after charging can satisfy the sending of the first message, sending the power receiving end device to the power supplying end device Send the first message. Based on this solution, a mechanism for sending a first message by a power receiving device is provided, that is, when the power stored by the power receiving device can meet the requirements for sending the first message, for example, the stored power can be used for sending the first message. The minimum voltage required for a message, the first message is sent immediately. In this way, it can also be ensured that the power supply device can obtain the position of each power receiving device at the fastest speed.

In a possible design, the power supply end device transmits the second electromagnetic wave in the second area, including: the power supply end device transmits the second electromagnetic wave carried by the directional beam to the location of the power receiving end device in the second area. Based on the solution, a solution is provided in which a power supply terminal device performs wireless charging for a power receiving terminal device. That is, after the power-supplying end device knows the positions of each power-receiving end device, it supplies power to the power-receiving end device by radiating electromagnetic waves in the second area with a smaller coverage. It can be understood that when the output power of the power supply device is constant, the smaller the coverage area of the corresponding emitted electromagnetic waves, the higher the power density of the electromagnetic wave coverage area, and thus the power reception in the coverage area can be improved. Wireless charging efficiency of end devices. As a possible implementation manner, the second area may be a minimum area corresponding to a directional beam covering only one of the multiple power receiving end devices, so that the power supply end device can reach the second area at the fastest speed The receiving end device inside is wirelessly charged.

In a possible design, the second electromagnetic wave carried by the directional beam is emitted by the power supply end device with full power. Based on the solution, a specific solution for wireless charging of the power supply terminal device through the second electromagnetic wave is provided, that is, the second electromagnetic wave is radiated in the second area with full power. In this way, the power supply end device can wirelessly charge the power supply end device in the second area with its maximum capability.

In a possible design, the method further includes: the receiving end device receives the second electromagnetic wave, and performs charging according to the second electromagnetic wave. Under the condition that the charged power of the power receiving end device meets the normal working requirements of the power receiving end device, the power receiving end device starts to work normally. Based on this solution, the power receiving end device can be charged according to the second electromagnetic wave. Exemplarily, the power receiving end device may receive the second electromagnetic wave through its receiving module (such as an antenna or an antenna array), convert the second electromagnetic wave into electric current, and store it in its power supply module. So that it can be used to support the normal operation of the power receiving device in the future.

In a possible design, the charged power of the power receiving end device meets the normal working requirements of the power receiving end device, including: the charged voltage of the power receiving end device is greater than the minimum working voltage of the power supply end device. Based on this solution, when the electric energy in the power module of the power receiving end device can be used to provide the minimum working voltage of the power receiving end device, the power receiving end device can start to work normally. This provides a complete mechanism for the power receiving end device to work according to the electrical energy obtained by wireless charging.

In a possible design, the method further includes: the power receiving end device sends a second message to the power supplying end device, where the second message is used to indicate the power consumption situation of the power receiving end device. The power supply end device receives the second message, and determines, according to the second message, the duration of the power supply for the power supply end device. Based on this solution, the power receiving end device can send the power consumption situation corresponding to the power receiving end device to the power supply end device through the second message. Exemplarily, the electricity usage may include electricity usage information, and the electricity usage information may include the current remaining electricity of the power receiving end device, and electricity consumption related information such as electricity that needs to be consumed by the end of the next work. After the power supply device knows the power consumption information of the power receiving device, it can combine the power supply capability of the power supply device to the power receiving device, such as the maximum transmit power of the power supply device, and the power supply efficiency of the power supply device. Determines the minimum length of time that the power supply device needs to be supplemented before the power receiving device works normally next time.

In a possible design, the method further includes: the power supply terminal equipment supplies power to the power receiving terminal equipment through the antenna array according to the power supply time duration. Based on this solution, the power supply equipment can determine the power-supply duration of each power-receiving-end device according to the specific conditions of the power-receiving end, and perform the power-supplying for the corresponding power-supplying time before the power-receiving-end device performs the next work, so as to ensure Subsequent normal operation of the power receiving device.

In a second aspect, a power supply terminal device is provided. The power supply terminal device is used to implement the function of the power supply terminal device in any of the possible wireless charging methods in the first aspect and its possible designs. As an example, an antenna array may be provided in the power supply terminal device.

In a third aspect, a chip system is provided, and the chip system can be applied to a power supply terminal device. Exemplarily, the chip system includes an interface circuit and a processor; the interface circuit and the processor are interconnected by a line; the interface circuit is used for receiving a signal from a memory of the electronic device and sending a signal to the processor, and the signal includes computer instructions stored in the memory. ; When the processor executes the computer instructions, the chip system is used to implement the function of the power supply terminal device in any of the possible wireless charging methods in the first aspect and its possible designs.

In a fourth aspect, a computer-readable storage medium is provided, the computer-readable storage medium includes computer instructions, and when the computer instructions are executed, execute the corresponding power supply device corresponding to any one of the first aspect and its possible designs. one or more steps of a wireless charging method.

A fifth aspect provides a computer program product, the computer program product includes an instruction, when the computer program product is run on a computer, executes the corresponding power supply equipment as in any one of the first aspect and its possible designs. one or more steps of a wireless charging method.

In a sixth aspect, a power receiving terminal device is provided. The power receiving end device is used to implement the function of the power receiving end device in any of the possible wireless charging methods in the first aspect and its possible designs.

In a seventh aspect, a chip system is provided, and the chip system can be applied to a power receiving end device. Exemplarily, the chip system includes an interface circuit and a processor; the interface circuit and the processor are interconnected by a line; the interface circuit is used for receiving a signal from a memory of the electronic device and sending a signal to the processor, and the signal includes computer instructions stored in the memory. ; When the processor executes the computer instructions, the chip system is used to implement the function of the power receiving end device in any of the possible wireless charging methods in the first aspect and its possible designs.

In an eighth aspect, a computer-readable storage medium is provided, the computer-readable storage medium includes computer instructions, and when the computer instructions are executed, the power-receiving terminal equipment as possible in any of the first aspect and its possible designs is executed. One or more steps in the corresponding wireless charging method.

A ninth aspect provides a computer program product, the computer program product includes an instruction, when the computer program product is run on a computer, executes a possible power receiving end device as described in the first aspect and its possible designs One or more steps in the corresponding wireless charging method.

According to a tenth aspect, a wireless charging system is provided. The wireless charging system includes a power receiving end device and a power supply end device, and an antenna array is arranged in the power supply end device. The power supply end device is used to control the antenna array to emit the first electromagnetic wave in the first area, and the power receiving end device is in the first area. The power receiving end device is used for receiving the first electromagnetic wave and charging by the first electromagnetic wave. The power receiving end device is further configured to send a first message to the power supply end device, where the first message is used to indicate the location of the power receiving end device in the first area. The power supply terminal device is further configured to receive the first message, and according to the first message, transmit a second electromagnetic wave in a second area, the second area includes the position of the power receiving terminal device, and the second area is smaller than the first area.

In a possible design, the first area is the maximum coverage area of the antenna array.

In a possible design, the power supply terminal device is used to control the antenna array to transmit the first electromagnetic wave with full power in the first area.

In a possible design, the power receiving end device is configured to send the first message to the power supply end device when the amount of electricity after charging is sufficient to send the first message.

In a possible design, the power supply end device is used to transmit the second electromagnetic wave carried by the directional beam to the location of the power receiving end device in the second area.

In a possible design, the second electromagnetic wave carried by the directional beam is emitted by the power supply end device with full power.

In a possible design, the power receiving end device is further configured to receive the second electromagnetic wave, and perform charging according to the second electromagnetic wave. The power receiving end device is also used to start to work normally when the charged power meets the normal working requirements of the power receiving end device.

In a possible design, the charged voltage of the power receiving end device is greater than the minimum working voltage of the power supply end device.

In a possible design, the power receiving end device is further configured to send a second message to the power supply end device, where the second message is used to indicate the power consumption situation of the power receiving end device. The power supply end device is further configured to receive the second message, and determine the duration of the power supply for the power supply end device according to the second message.

In a possible design, the power supply terminal device is also used to supply power to the power receiving terminal device through the antenna array according to the duration of the power supply.

It should be understood that the technical solutions provided by the second aspect, the third aspect, the fourth aspect, the fifth aspect, the sixth aspect, the seventh aspect, the eighth aspect, the ninth aspect, and the tenth aspect, and its technical features Both can correspond to the wireless charging method provided in the first aspect and its possible designs, so the beneficial effects that can be achieved are similar, which will not be repeated here.

Description of drawings

FIG. 1 is a schematic diagram of a wireless charging solution;

FIG. 2 is a schematic diagram of the composition of a wireless charging system according to an embodiment of the present application;

FIG. 3 is a schematic diagram of the composition of a power supply terminal device according to an embodiment of the present application;

FIG. 4 is a schematic diagram of the composition of a power receiving terminal device according to an embodiment of the present application;

FIG. 5 is a schematic flowchart of a wireless charging method provided by an embodiment of the present application;

6 is a schematic diagram of a first area provided by an embodiment of the present application;

FIG. 7 is a schematic diagram of a power supply terminal device precharging a plurality of power receiving terminal devices according to an embodiment of the present application;

FIG. 8 is a schematic flowchart of another wireless charging method provided by an embodiment of the present application;

FIG. 9 is a schematic diagram of experimental comparison of a wireless charging method provided by an embodiment of the present application;

FIG. 10 is a schematic diagram of the composition of a power supply terminal device provided by an embodiment of the present application;

11 is a schematic diagram of the composition of another power supply terminal device provided by an embodiment of the application;

FIG. 12 is a schematic diagram of the composition of a chip system provided by an embodiment of the present application;

FIG. 13 is a schematic diagram of the composition of a power receiving terminal device according to an embodiment of the present application;

FIG. 14 is a schematic diagram of the composition of another power receiving terminal device provided by an embodiment of the present application;

FIG. 15 is a schematic diagram of the composition of another chip system provided by an embodiment of the present application.

detailed description

At present, a common wireless charging solution is: the power supply terminal device transmits electromagnetic waves through the antenna set therein, and the power receiving terminal device can receive the electromagnetic waves through the antenna set therein, and convert the electromagnetic waves into electrical energy for storage or direct use. Exemplarily, FIG. 1 is a schematic diagram of a wireless charging solution, in which the receiving end device includes four devices (eg, sensor 1, sensor 2, sensor 3, and sensor 4) as an example. The power supply terminal device can transmit the electric energy fed into the antenna in the form of electromagnetic waves through the antenna provided therein. Each sensor (such as sensor 1, sensor 2, sensor 3, and sensor 4) within the antenna radiation range of the power supply device can receive the electromagnetic wave through the antenna carried therein, and convert the received electromagnetic wave into electrical energy for power supply use.

It should be noted that electronic devices such as sensors have certain requirements for electrical parameters such as power supply voltage when they start to work. That is, when the power supply voltage reaches the minimum working voltage that can drive the sensor to work, the sensor can start to work. Therefore, in the wireless charging scenario shown in Figure 1, after the power supply device starts to wirelessly charge Sensor 1-Sensor 4, each sensor in Sensor 1-Sensor 4 needs to be charged for a period of time, to start working. In the embodiment of the present application, the time from when the power supply device starts charging the sensor to when the sensor starts to work normally is the pre-charging time. It can be understood that the minimum operating voltages of different sensors are different, so the pre-charging times corresponding to different sensors are also different.

When using the wireless charging scheme shown in Figure 1 to wirelessly charge the sensor, some problems arise. Exemplarily, in some scenarios, the power supply device performs wireless charging for multiple sensors at the same time as an example. When the power supply device performs wireless charging through its antenna, the magnetic field strength at the location of the sensor that is closer to the antenna is greater, so it can be charged faster. The sensor that is farther from the antenna of the power supply device has a smaller magnetic field strength, so the charging efficiency is lower. Therefore, the sensor that is far away from the power supply device may have a longer pre-charging time due to lower charging efficiency, thereby affecting the operation of the sensor. In addition, since the pre-charging time of the sensor is related to the minimum operating voltage of the sensor. For example, the higher the minimum operating voltage, the longer the precharge time. However, if the position of the sensor with a higher minimum operating voltage is far from the power supply device, the pre-charging time of the corresponding sensor will be further extended.

It should be noted that, after the sensor starts to work normally, since electric energy needs to be continuously consumed, the power supply terminal device needs to be able to supply power to each sensor in time. Similar to the above description in the pre-charging process, the farther away from the power supply device, the lower the rate at which the corresponding sensor is charged. In this way, the charging rate of the sensor far away from the power supply end device may be slowed down, thereby affecting the normal operation of the corresponding device.

The above description of the problems of the current power supply scheme as shown in FIG. 1 is mainly explained from the perspective that sensors far away from the power supply end device are easily affected. It should be understood that due to the different minimum operating voltages of different sensors, the amount of electric energy that needs to be supplemented during the power-supplying process is also different. Therefore, for sensors with higher minimum operating voltages or large power consumption during operation, it is necessary to supplement A sensor with a large amount of power, even if it is close to the power supply device, may require a longer pre-charging time or charging time, which will affect the normal operation of the sensor.

In order to solve the above problem, an embodiment of the present application provides a wireless charging method. By adjusting the power supply strategy for the power receiving device, the pre-charging time and the charging time of the power receiving device can be effectively reduced, thereby ensuring the power receiving end. normal operation of the device.

The solutions provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Please refer to FIG. 2 , which is a schematic diagram of the composition of a wireless charging system 200 according to an embodiment of the present application. As shown in FIG. 2 , the wireless charging system 200 may include a power supply terminal device 210 and N power receiving terminal devices (receiving terminal device 1 - receiving terminal device N shown in FIG. 2 ). It should be noted that, in FIG. 2 , one power supply terminal device 210 is used for wireless charging for multiple power receiving terminal devices as an example for description. In other implementations of the present application, the wireless charging system 200 may also simultaneously A plurality of power supply end devices 210 are included, and the plurality of power supply end devices 210 can perform wireless charging for one or more power receiving end devices synchronously/asynchronously. The following description will be given by taking the wireless charging system 200 including a power supply device 210 as an example.

As an example, as shown in FIG. 3 , the power supply device 210 may include a power module 211 , a processing module 212 , and a radiation module 213 .

Wherein, the power module 211 may include a battery, and/or a super capacitor with an energy storage function and other components. The power supply module 211 can be used to store electrical energy, so that under the control of the processing module 212, the stored electrical energy can be converted into electromagnetic waves by the radiation module 213 for other power receiving end devices (such as the power receiving end device 1 - the power receiving end device N) Do wireless charging. In other embodiments, the power module 211 may also include a power interface. When the power interface is connected to an external power source, the energy storage component in the power module 211 can be charged. When the power interface is connected to an external power source, the power module 211 can also directly radiate the electric energy from the external power source and/or the energy storage component through the radiation module 213 .

The processing module 212 may include one or more of a central processing unit (Central Processing Unit, CPU), a microcontroller unit (Microcontroller Unit, MCU), and a baseband processor (Baseband Processor, BP). In some other implementations, the processing module 212 may also be other components or circuits with processing functions. The processing module 212 can be used to control the power module 211 to output power and radiate it out through the radiation module 213 .

The radiation module 213 may have components that convert electrical energy into electromagnetic waves. For example, the radiation module 213 may be an antenna array including a plurality of antenna elements, or the radiation module 213 may also be a single antenna.

Taking the radiation module 213 as an antenna array as an example, in some implementations, the radiation module 213 can implement directional radiation based on beamforming technology under the control of the processing module 212 . Exemplarily, with reference to FIG. 2 , the radiation module 213 may, under the control of the processing module 212, generate a beam 1 corresponding to the location of the power receiving end device 1 for wirelessly charging the power receiving end device 1. Similarly, the radiation module 213 may, under the control of the processing module 212 , generate a beam 2 corresponding to the location of the power receiving end device 2 for wirelessly charging the power receiving end device 2 . By analogy, the radiation module 213 can wirelessly charge other power receiving devices under the control of the processing module 212 .

In this embodiment of the present application, the power supply terminal device 210 may further be provided with a communication module 214 . The power supply end device 210 can communicate with other devices through the communication module 214 . For example, the power supply end device 210 can communicate with each power receiver end device through the communication module 214 . In some implementation scenarios, the power supply end device 210 may know the location of the power receiving end device through communication with the power receiving end device. In other implementation scenarios, the power supply end device 210 may also know the power consumption information of the power receiving end device 220 through communication with the power receiving end device. The power supply terminal device 210 may determine a power supply strategy for the power receiving terminal device according to the power consumption information.

In addition, the power supply end device 210 can directly communicate with the power receiving end device 220 through its communication module 214, and can also briefly communicate with the power receiving end device 220 through other devices. For example, the power supply end device 210 communicates with the power receiving end device 220. When the 220 is covered by the same network, it can communicate with the access device in the network through its communication module 214, and the access device 220 can transmit the communication requirement or related information to the receiving end device 220, so as to realize the power supply end. Indirect communication between the device 210 and the receiving end device 220 . Wherein, the network coverage may include a wireless local area network (Wireless Local Area Network, WLAN), or based on the third generation mobile communication technology (3rd-Generation, 3G)/fourth generation mobile communication technology (4th-Generation, 4G)/fifth generation mobile communication technology (4th-Generation, 4G) A mobile communication network based on the 5th-Generation (5G) technology, or other networks capable of implementing the above functions.

In the wireless charging system 200 shown in FIG. 2 , the power receiving end device 1 - the power receiving end device N may have the same or different modules for realizing their respective functions.

Please refer to FIG. 4 , which is a schematic diagram of the composition of a power receiving terminal device 220 according to an embodiment of the present application. The power receiving end device 1 - the power receiving end device N shown in FIG. 2 may all be devices with this composition. As shown in FIG. 4 , the power receiving device 220 may include a power module 221 , a processing module 222 , a radiation module 223 , and a communication module 224 .

It should be noted that the composition and implementation of the power supply module 221 , the processing module 222 , the radiation module 223 and the communication module 224 in the power receiving device 220 correspond to the modules in the power supply device as shown in FIG. 3 , and their functions are also similar. , and will not be repeated here. Of course, the power receiving end device 220 may also include other functional modules (not shown in FIG. 4 ), and these functional modules may implement the corresponding functions of the power receiving end device 220 under the control of the processing module 222 . For example, the power receiving device 220 may include a component capable of monitoring temperature, so as to realize the function as a temperature sensor. For another example, the power receiving end device 220 may include a component capable of monitoring the concentration of smoke, so as to function as a smoke alarm.

As an example, in the power receiving end device 220, the radiation module 223 may receive electromagnetic waves in space and convert the electromagnetic waves into electric current. In order for the power module 221 to store the electric energy corresponding to the current, and provide it to the power receiving end device 220 for use. The conversion of electromagnetic waves by the radiation module 223 and the functions of energy storage and power supply of the power module 221 can be performed under the instruction of the processing module 222 . The processing module 222 can also be used to control the communication module 224 to communicate with the power supply end device. For example, the processing module 222 may control the communication module 224 to communicate with the power supply end device when the power in the power receiving end device 220 is sufficient to support basic communication with the power supply end device, so that the power supply end device can know the power of the power receiving end device 220 position. For another example, the processing module 222 can control the communication module 224 to communicate with the power supply end device when the power receiving end device 220 needs to supplement the power, so that the power supply end device can know the power consumption information of the power receiving end device 220, and determine the corresponding power supply accordingly. The power replenishment strategy of the power receiving device 220 .

It should be noted that, in some implementation manners, the communication module 224 in the power supply end device and/or the power reception end device 220 may be a component independent of other modules, and may also communicate with the radiation module 223 (eg, an antenna array) Function. For the convenience of description, the following is an example in which the radiation module 223 and the communication module 224 are both antenna arrays.

In a specific implementation, the power receiving end device 220 may be a sensor with different functions. Sensors can be characterized by intermittent operation. Exemplarily, the sensor may be in a working state from time T1 to time T2, also be in a working state from time T3 to time T4, and may be in a non-working state such as dormancy at time T2 and time T3. The power supply device can synchronously supply power to the sensor when it is working, or it can supply power to the sensor when it is not working. This embodiment of the present application does not limit the power supply timing of the power supply terminal device.

The wireless charging method provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings. This solution can be used in the wireless charging system as shown in Figure 2.

Please refer to FIG. 5 , which is a schematic flowchart of a wireless charging method provided by an embodiment of the present application. The pre-charging process is described by taking the wireless charging system including one power supply terminal device and one power receiving terminal device as an example. It should be understood that when there are more power receiving end devices in the wireless charging system, the execution steps are similar, and only one power receiving end device in the wireless charging system is taken as an example for description here. As shown in FIG. 5, the method may include S501-S508.

S501. The power supply terminal device controls the antenna array to radiate in the first area.

In this example, when the power receiving device needs to start working, its antenna array can be controlled to radiate uniformly in the first area. That is, in the first region, the energy distributions of various angles are similar or the same. Wherein, in some implementation manners, the first area may be the maximum radiation range of the antenna array. It should be understood that when the power supply device starts to wirelessly charge the power receiving device, it does not know the location of the power receiving device, and when the power receiving device needs to start working, if the power receiving device is used for the first time , or the power receiving end device starts to be used after not being used for a long time, and the power stored in the power module in the power receiving end device is very small, which cannot support the normal operation of the power receiving end device. Therefore, in this example, the power supply device can radiate uniformly in a large range, so as to be able to supply power to all the power receiver devices that need wireless charging.

As an example, in this embodiment of the present application, as shown in (a) of FIG. 6 , the first area may be the maximum radiation range of the power supply end device. That is, the first area is the maximum radiation area of the antenna array in the power supply terminal device. In this way, the power-supplying end device can be enabled to supply power to the power-receiving end device without knowing the location of the power-receiving end device.

In other embodiments of the present application, as shown in (b) of FIG. 6 , the first area may be an area in the maximum radiation range of the power supply terminal device. It should be understood that when the power supply end device radiates in the first area, the smaller the area, the greater the power density in the space, and the higher the power supply efficiency for the power receiving end device in the first area. The power supply terminal equipment can change the coverage angle of the first area after radiating for a preset time in the first area as shown in (b) in FIG. Wireless charging of receiver devices within the radiation range.

It should be noted that, in the embodiment of the present application, the radiation of the power supply terminal equipment in the first area is used to provide power to the power receiving terminal equipment so as to be able to communicate with it to know the position of the power receiving terminal equipment (for the specific implementation method, please refer to As described below), the power receiving end device only needs a small amount of power to communicate with the power receiving end device, so the radiation time in the first area is very short. For example, taking the first area as the maximum radiation range of the power supply end device as an example, the execution duration of S501 is generally only a duration of the second level.

S502, the power receiving end device is charged by the electromagnetic wave 1 radiated by the power supply end device.

S503, the power receiving end device sends message 1 to the power supply end device.

In combination with the foregoing description, the antenna in the power receiving end device can receive the electromagnetic wave emitted by the power supply end device, convert the electromagnetic wave into electric current and store it in the power module of the power receiving end device. In the embodiment of the present application, when the power stored in the power module of the power receiving end device is sufficient to support the power receiving end device to send the message 1, the power receiving end device can send the message 1 to the power supply end device through its antenna. The message 1 can be used by the power supply device to determine the location of the power receiving device.

In different implementations, the message 1 can achieve its function through different signals. Exemplarily, in some implementations, the power receiving end device can know its location determined by the positioning component therein, and carry the location information in message 1 and send it to the power supply end device. In other implementation manners, after the power receiving end device determines that the message 1 can be sent, it can radiate electromagnetic waves with a certain phase and/or amplitude into the space, so that the power supply end device can receive the electromagnetic wave according to the phase and/or amplitude Determine the location of the receiver device. In other implementations, the power receiving end device can radiate corresponding electromagnetic waves into space based on the preconfigured power level, so that the power supply end device can receive the electromagnetic wave and determine the position of the power receiving end device accordingly.

In addition, the message 1 may also carry an identifier corresponding to the power supply terminal device, and the identifier may be used to indicate that the message 1 is sent by the power receiving terminal device. This embodiment of the present application does not limit the content and sending manner of the message 1 .

S504 , the power supply end device receives message 1 .

S505, the power supply end device determines the position of the power receiving end device according to the message 1.

The power supply device can receive message 1 through its antenna array. And according to the message 1 to determine the position of the receiving end device.

Exemplarily, in some implementations, the message 1 includes location information of the power receiving end device, and the power supply end device can determine the location of the power receiving end device that sends the message 1 according to the location information.

In other implementation manners, the power supply end device may determine the location of the power receiving end device that sends the message 1 by receiving the phase and/or amplitude information corresponding to the message 1 . For example, after receiving the electromagnetic wave corresponding to the message 1, the power supply terminal device may convert the electromagnetic wave into an electrical signal having a corresponding amplitude and/or phase. Corresponding relationships between electrical signals of different phases and/or amplitudes and the positions of the corresponding power receiving end devices may be configured in the power supply end device. The power supply end device may determine the position of the power receiving end device according to the amplitude and/or phase of the electrical signal corresponding to the message 1 .

In other implementation manners, the power supply end device may determine the location of the power receiving end device by receiving the response electromagnetic wave emitted by the power receiving end device. Exemplarily, the antenna array in the power supply device may include multiple antenna elements, and each antenna element can receive electromagnetic waves in space. Since the power supply terminal device can receive the response electromagnetic wave through its antenna array, and the angle of the response electromagnetic wave from different positions relative to the antenna array is different, it will also lead to the phase difference of the response electromagnetic wave received by the antenna vibrators at different positions in the antenna array. The magnitude is different. The power supply end device can determine the position of the power receiving end device that emits the corresponding response electromagnetic wave according to the phase and amplitude of the response electromagnetic wave received by each vibrator.

S506, the power supply terminal device transmits the electromagnetic wave 2 to the second area.

Wherein, the location where the power receiving end device is located is included in the second area. The second area is smaller than the first area.

In this embodiment of the present application, after determining the position of the power receiving end device, the power supply end device can control its antenna array to radiate high power to a smaller area (such as the second area) (for example, the radiated power is close to or equal to the power supply end device) the maximum radiated power), so as to perform high-efficiency wireless charging on the receiving end devices in the second area. Exemplarily, the power supply end device may control the antenna array to form a directional beam directed to the second area by using a beamforming technology. It can be understood that, since the maximum output power of the power supply terminal equipment is constant, when the power supply terminal equipment radiates the maximum radiated power to the second area, the power density in the second area is significantly greater than that of the power supply terminal equipment. The power density when the first region is radiated. Therefore, the power receiving device in the second area can be charged with higher efficiency. In some implementation manners, the directional beam directed to the second area may be a narrow beam directed to the power receiving end device, so that the power density in the narrow beam for wireless charging for the power receiving end device can be further improved, thereby improving The power supply efficiency of the receiving end device.

S507, the power receiving end device receives the electromagnetic wave 2 for charging.

S508, the power receiving end device starts to work normally.

The receiving end device can receive electromagnetic waves of a directional beam (such as a narrow beam directed to the receiving end device) through the antenna provided therein, and convert the electromagnetic waves of the directional beam into electric current and store it in its power module. When enough power is stored in the power module to support the normal operation of the power receiving device, the power receiving device can start to work normally. Exemplarily, taking the minimum working voltage of the power receiving end device as the first threshold value, when the voltage of the electrical energy stored in the power receiving end device exceeds the first threshold value, the power receiving end device can start to work normally.

As a possible implementation manner, when the power receiving end device starts to work normally, a confirmation message can also be sent to the power supply end device, so that the power supply end device knows that the power receiving end device has started to work normally, so that the power supply end device can start to work normally. After time, the wireless charging of the power receiving device is stopped, so as to achieve the purpose of green energy saving.

Based on the solution shown in FIG. 5 , the power supply device can transmit a message to the power supply device by quickly receiving enough power through a wide range of radiation when the power supply device starts to supply power to the power supply device. 1, so that the power supply device knows the location of the power receiving device. Since the power supply device only needs a small amount of power to send the message 1, the process takes a very short time. After knowing the location of the power receiving end device, the power supply end device can send a directional beam to the location of the power receiving end device to improve the power density of the electromagnetic wave of wireless charging in space, thus enabling the power receiving end device to more quickly to charge. Further, the duration of the period from the time when the power receiving end device needs to start to work until it obtains sufficient power to start to work (ie, the precharge time) can be effectively shortened, and the purpose of shortening the precharge time can be achieved.

It should be noted that, the above solution shown in FIG. 5 is described by taking as an example that there is one power receiving end device in the wireless charging system. In some other scenarios, the wireless charging system may also include more power receiving end devices. When the power supply device performs wireless charging for multiple power receiving devices, the above S501 can be used to supply power to all the devices that need to be wirelessly charged, so that each of the multiple power receiving devices can separately execute S502-S503. In this way, the power supply end device can receive a plurality of messages 1 respectively from the plurality of power receiver end devices. The power supply end device may determine, according to each message 1, the location of the power receiving end device corresponding to sending the message 1 (for example, performing the above S504-S505). Thus, the power supply terminal device can determine the position of each power receiving terminal device in the plurality of power receiving terminal devices. The power supply device can also transmit a directional beam to another one of the multiple power receivers after precharging one of the multiple power receivers to precharge it. . Based on this solution, since the power supply terminal device can respectively perform high-efficiency wireless charging on each of the multiple power receiving terminal devices, the precharging time for all the power receiving terminal devices can be effectively shortened.

As an example, FIG. 7 shows a schematic diagram of a power supply terminal device precharging multiple power receiving terminal devices. Among them, it is assumed that the power supply end device is three power receiving end devices (eg, the power receiving end device 1 , the power receiving end device 2 , and the power receiving end device 3 ) as an example. The power supply end device can determine the position 1 of the power receiving end device 1 , the position 2 of the power receiving end device 2 , and the position 3 of the power receiving end device 3 respectively according to the above method. In some implementations, the power receiving end device may transmit a beam 1 to the location 1 so as to wirelessly charge the power receiving end device 1 through the electromagnetic waves of the beam 1 . When the voltage corresponding to the electric energy stored by the power receiving end device 1 can meet the minimum working voltage of the power receiving end device 1, the power receiving end device 1 can send a confirmation message 1 to the power supply end device, so that the power supply end device can know the power receiving end device. 1 has been able to start working. The power supply end device can continue to use the beam 1 for the power receiving end device 1. When the electric energy stored by the power receiving end device 1 can support it to complete a work, the power receiving end device 1 can send the confirmation message to the power supply end device again. 1- 1, so that the power supply device can know that it is not necessary to supply power to the power receiving device 1 temporarily.

It should be noted that, in some implementations, when the voltage of the electrical energy stored in the power receiving end device 1 can meet the minimum operating voltage requirement, the power receiving end device may not feed back the confirmation message 1 to the power supply end device. The power supply end device can continue to supply power to the power receiving end device 1 with the beam 1 . The power receiving end device 1 may feed back a confirmation message 1 to the power supplying end device when the stored electric energy can support it to complete a work, so that the power supplying end device can know that the power receiving end device 1 does not need to supply power temporarily.

The above example is described by taking the power receiving end device actively feeding back its electric energy storage status to the power supply end device, so that the power supply end device can control the precharging process of each power receiving end device accordingly. In some other embodiments, the power supply terminal device may also control the precharging process for each power receiving terminal device according to the identification of each power receiving terminal device. Exemplarily, with reference to the above description, the power supply end device may determine the type of the power receiving end device according to the identifier carried in the message 1 fed back by the power receiving end device. According to the type of the power receiving end device, the power supply end device can determine the precharging time for the power receiving end device according to the preconfigured correspondence between the type of the power receiving end device and the precharging time. Accordingly, the power supply end device can actively determine the precharging time of each power receiving end device and precharge each power receiving end device accordingly without the need for the power receiving end device to feed back its electrical energy storage condition.

Similar to precharging the power receiving device 1 , the power supplying device may wirelessly charge the power receiving device 2 through the beam 2 after stopping the precharging of the power receiving device 1 . Similarly, when the power supply device confirms that it does not need to supply power to the power receiving device 2 temporarily, it can control the antenna array to generate a beam 3 to supply power to the power receiving device 3 .

It should be noted that, in some implementation scenarios of the present application, the power supply terminal device may separately precharge multiple power receiving terminal devices according to preset rules. According to the preset rule, the power supply terminal device can determine the sequence of precharging each power receiving terminal device. Exemplarily, the power supply end device can know the type of the corresponding power receiving end device through message 1, so the power supply end device can determine the priority of the power receiving end device according to the type of the power receiving end device. For example, take the power receiving device as the sensor as an example. When the sensor type is a sensor related to temperature, smoke, humidity, etc., the sensor can have a higher priority. When the sensor type is other sensor, the sensor can be a lower priority sensor. The power supply device can preferentially pre-charge the sensors with higher priority, so that these sensors can quickly enter the working state.

In combination with the above description, after each power receiving end device starts to work, the power supply end device needs to make up power for it, so that the power receiving end device can continue the next work after completing one work. The embodiment of the present application also provides a wireless charging method, which enables the power supply terminal device to flexibly determine a power supply strategy such as the power supply time length for each power receiving terminal device according to the actual power consumption of different power receiving terminal devices. And according to the power-supplying strategy, power-supplying is performed for each power-receiving end device through a beam time-division similar to that in the above-mentioned pre-charging process. As a result, the power-up time for each power receiving device can be significantly reduced.

Exemplarily, please refer to FIG. 8 , which is a schematic flowchart of another wireless charging method provided by an embodiment of the present application. Among them, it is taken as an example that one power supply end device performs power supplementation for three power receiving end devices (eg, power receiving end device 1, power receiving end device 2, and power receiving end device 3). As shown in FIG. 8, the method may include S801-S804.

S801. The power receiving end device sends message 2 to the power supply end device respectively.

Wherein, the message 2 at least includes the power consumption information in the power receiving end device. Exemplarily, the power consumption information may be used to indicate the power consumption of the corresponding power receiving device. In some implementation manners, the power consumption information may include information such as the current remaining power of the power receiving end device, the power required to be consumed by the end of the next work, and the like.

It should be noted that, in the embodiment of the present application, the power receiving end device may send the message 2 to the power supply end device before the power supply end device supplies power for it. For example, the power receiving end device may send the message 2 to the power supply end device after completing the first work. In other implementation manners, the power receiving end device may send the message 2 to the power supply end device during normal operation. In this implementation manner, the message 2 may further include a time stamp, so that the power supply end device can determine the time for the corresponding power supply end device to supplement power according to the time stamp.

S802 , the power supply end device receives the message 2 .

S803 , the power supply end device determines, according to the message 2, the time for replenishing power to each power receiving end device.

In combination with the description in S801, after receiving the message 2, the power supply end device can know the information such as the electric energy required by the power receiving end device corresponding to the sending of the message 2 before the end of the next work according to the message 2.

Exemplarily, the power supply terminal device may receive the message 2-1 from the power receiving terminal device 1 . Then, the power supply end device can determine, according to the message 2-1, the power required by the power receiving end device 1 before the next work ends. The power supply end device can determine the length of time it needs to supply power to the receiving end device 1 during a power supply process according to its power supply efficiency in the process of wireless charging to the power supply end device through the high-power directional beam (for example time 1). Similarly, the power supply end device can receive the message 2-2 from the power receiving end device 2 . Then, the power supply end device can determine, according to the message 2-2, the power required by the power receiving end device 2 before the next work ends. The power supply end device can determine the length of time it needs to replenish power to the receiving end device 2 during a power replenishment process according to its power supply efficiency in the process of wirelessly charging the power supply end device through the high-power directional beam (for example, replenishing power). time 2). The power supply end device can receive the message 2-3 from the power receiving end device 3 . Then, the power supply end device can determine, according to the message 2-3, the power required by the power receiving end device 3 before the end of the next work. The power supply end device can determine the length of time it needs to supply power to the receiving end device 3 during a power supply process according to its power supply efficiency in the process of wireless charging to the power supply end device through the high-power directional beam (for example time 3). In this way, the power supply end device can know the power replenishment time required by all three power receiving end devices. In this way, the power supply terminal equipment can supply power to each power receiving terminal equipment according to the power supply time. That is, the following S804 is executed.

S804 , the power supply terminal equipment respectively supplies power to each power receiving terminal device according to the power supply time.

As an example, the power supply end device may perform supplementary power for each power receiving end device for a corresponding duration according to the time identifier carried in the message 2 . Exemplarily, the power supply end device may determine, according to the time identifier carried in the message 2-1, that the power supply to the power receiving end device 1 needs to start from the time 1 corresponding to the event identifier. Then, the power supply end device can start from this time 1, and within the subsequent power supplement time 1, transmit a directional beam to the power receiving end device 1 to supply power for it. After the power supply to the receiving end device 1 is completed, the power supply end device can determine, according to the time flag carried in the message 2-2, that the power supply to the power receiving end device 2 needs to start from the time 2 corresponding to the event flag. Then, the power supply end device can start from this time 2, and within the subsequent power supplement time 2, transmit a directional beam to the power receiving end device 2 to supplement it. After the power supply to the receiving end device 2 is completed, the power supply end device can determine, according to the time flag carried in the message 2-3, that the power supply to the power receiving end device 3 needs to start from the time 3 corresponding to the event flag. Then, the power supply end device can start from this time 3, and within the subsequent power replenishment time 3, transmit a directional beam to the power receiving end device 3 to replenish power for it.

It should be noted that, in the above example, the power supply end device supplements power for the corresponding power receiving end device according to the time corresponding to the time stamp carried in the message 2 as an example for description. In some other implementation manners, the power supply end device may also estimate the corresponding power supply time and/or the power supply time according to the type of each power receiving end device, or the power supply end device may The power-supply strategy of the terminal device determines the corresponding power-up time and/or power-up duration. In a specific implementation process, the determination of the power-up time and/or the power-up duration can be flexibly selected, which is not limited in this embodiment of the present application.

In addition, similar to the description in FIG. 5 above, the power supply sequence for each power receiving end device by the power supply end device may also be determined according to the priority of each power receiving end device, or preconfigured. The determination method thereof is similar and will not be repeated here.

In this way, the purpose of quickly replenishing power for each power receiving end device by the power supply end device is achieved. It can be understood that, through the solution shown in Figure 8, the power supply device can adaptively adjust the power supply time and start time for the power supply to the power receiving device according to the power demand of the power receiving device. Therefore, It is possible to improve the power supply efficiency of supplying power for each power receiving end device.

In combination with the above description, at present, if the non-directional beam scheme is adopted to wirelessly charge all the power receiving devices within the coverage of the power supply device at the same time, due to the low power density in the space, the charging efficiency of each power receiving device is low. On this basis, if the power density on the transmission path with each power supply end device is increased through the directional beam, the power supply efficiency of the power receiving end device can be improved to a certain extent. The improvement can be manifested as a shortening of the pre-charging time and an improvement in the charging efficiency. It can be seen through experiments that the wireless charging solution provided by the embodiments of the present application can adaptively adjust the wireless charging strategy for each power receiving end device. Therefore, compared with the existing directional beam to all power receiving end devices at the same time, it can be seen. With the wireless charging solution, the pre-charging time can be further shortened, and the charging efficiency can be significantly improved. As a result, the power supply efficiency of the wireless charging system can be significantly improved. The experimental comparison results are shown in Figure 9. As shown in Figure 9, no matter in the pre-charging process (that is, the time from when the power supply device starts supplying power to the receiving end device to the time when the receiving end device starts to work normally for the first time), it is still a one-time replenishment for a receiving end device. Compared with the current existing fixed beam charging solutions, the wireless charging solutions provided in the embodiments of the present application can achieve the effect of significantly reducing the time consumed by the charging process. Power supply efficiency.

The foregoing mainly introduces the solutions provided by the embodiments of the present application from the perspective of interaction between the power supply terminal device and the power reception terminal device. In order to realize the above-mentioned functions, it includes corresponding hardware structures and/or software modules for executing each function. Those skilled in the art should easily realize that the present application can be implemented in hardware or a combination of hardware and computer software with the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein. Whether a function is performed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

In this embodiment of the present application, the device involved may be divided into functional modules according to the above method examples. For example, each functional module may be divided into each function, or two or more functions may be integrated into one processing module. The above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules. It should be noted that, the division of modules in the embodiments of the present application is schematic, and is only a logical function division, and there may be other division manners in actual implementation.

Please refer to FIG. 10 , which is a schematic diagram of the composition of a power supply terminal device 1000 according to an embodiment of the present application. The power supply terminal device 1000 may be used to implement the function of the power supply terminal device in any of the wireless charging methods in the embodiments of the present application. Exemplarily, the power supply end device 1000 may be the power supply end device 210 shown in FIG. 2 . It should be noted that the composition of the power supply device 210 shown in FIG. 3 is not exactly the same as that of the power supply device 1000 shown in FIG. 10 , but in specific implementation, the power supply device 1000 and the power supply device 210 can pass through the same physical device implementation. The composition shown in FIG. 10 and the composition shown in FIG. 3 are only the division of functional modules from different angles. Of course, in different implementation manners, the power supply terminal device may also have other functional divisions for implementing corresponding functions.

Exemplarily, as shown in FIG. 10 , the power supply terminal device 1000 may include: a transmitting unit 1001 and a receiving unit 1002 . In some implementations, the functions of the transmitting unit 1001 and/or the receiving unit 1002 may be implemented by an antenna array in the power supply terminal device 1000 .

The transmitting unit 1001 is configured to transmit a first electromagnetic wave in a first area, and the first area includes at least one power receiving end device. The receiving unit 1002 is configured to receive the first message. The first message is used to indicate the location of the power receiving end device. The transmitting unit 1001 is further configured to transmit a second electromagnetic wave in a second area according to the first message, the second area includes the position of the power receiving end device, and the second area is smaller than the first area.

In a possible design, the first area is the maximum coverage area of the antenna array set in the power supply terminal device 1000 .

In a possible design, the transmitting unit 1001 is used to transmit the first electromagnetic wave with full power in the first area.

In a possible design, the transmitting unit 1001 is configured to transmit the second electromagnetic wave carried by the directional beam to the position of the power receiving end device in the second area.

In a possible design, the second electromagnetic wave carried by the directional beam is emitted by the power supply end device with full power.

In a possible design, the receiving unit 1002 is configured to receive a second message, where the second message is used to indicate the power consumption of the power receiving device. The power supply terminal device 1000 further includes a determination unit 1003, configured to determine the power-supply duration for the power supply terminal device according to the second message.

In a possible design, the transmitting unit 1001 is further configured to supply power to the power receiving end device through the antenna array according to the power supply duration. Exemplarily, the transmitting unit 1001 may supply power to the power receiving end device by transmitting the second electromagnetic wave.

It should be noted that, all relevant contents of the steps involved in the above method embodiments can be cited in the functional description of the corresponding functional module, which will not be repeated here.

FIG. 11 shows a schematic diagram of the composition of a power supply terminal device 1100 . As shown in FIG. 11 , the power supply end device 1100 may include: a processor 1101 and a memory 1102 . The memory 1102 is used to store computer-implemented instructions. Exemplarily, in some embodiments, when the processor 1101 executes the instructions stored in the memory 1102, the power supply device 1100 can be made to execute the wireless charging method shown in any one of the foregoing embodiments.

It should be noted that, all relevant contents of the steps involved in the above method embodiments can be cited in the functional description of the corresponding functional module, which will not be repeated here.

FIG. 12 shows a schematic composition diagram of a chip system 1200 . The chip system 1200 can be applied to a power supply device. Exemplarily, the system-on-a-chip 1200 may include: a processor 1201 and a communication interface 1202, configured to support the power supply end device to implement the functions involved in the foregoing embodiments. In a possible design, the chip system further includes a memory for storing necessary program instructions and data of the terminal. The chip system may be composed of chips, or may include chips and other discrete devices. It should be noted that, in some implementation manners of the present application, the communication interface 1202 may also be referred to as an interface circuit.

It should be noted that, all relevant contents of the steps involved in the above method embodiments can be cited in the functional description of the corresponding functional module, which will not be repeated here.

Please refer to FIG. 13 , which is a schematic diagram of the composition of a power receiving terminal device 1300 according to an embodiment of the present application. The power receiving end device 1300 may be used to implement the functions of the power receiving end device in any wireless charging method in the embodiments of the present application. Exemplarily, the power receiving end device 1300 may be the power receiving end device 220 shown in FIG. 2 . It should be noted that the composition of the power receiving end device 220 shown in FIG. 4 is not exactly the same as that of the power receiving end device 1300 shown in FIG. 13 , but in the specific implementation, the power receiving end device 1300 and the power receiving end device 220 may be implemented by the same physical device. The composition shown in FIG. 13 and the composition shown in FIG. 4 are only the division of functional modules from different angles. Of course, in different implementation manners, the power receiving end device may also have other functional divisions for implementing corresponding functions.

Exemplarily, as shown in FIG. 13 , the receiving end device 1300 may include: a receiving unit 1301 and a sending unit 1302 . In some implementations, the functions of the transmitting unit and/or the receiving unit 1301 may be implemented by an antenna array in the power receiving end device 1300 .

The receiving unit 1301 is used for receiving the first electromagnetic wave, and charging by the first electromagnetic wave. Wherein, the first electromagnetic wave is emitted by the power supply terminal device. In some embodiments, the coverage range of the first electromagnetic wave is a first area, the first area may be the maximum coverage area of the power supply end device, and the power reception end device 1300 may be located in the first area.

The sending unit 1302 is configured to send a first message to the power supply end device, where the first message is used to indicate the location of the power receiving end device in the first area.

In a possible design, the sending unit 1302 is configured to send the first message to the power supply end device when the amount of electricity after charging is sufficient to send the first message.

In a possible design, the receiving unit 1301 is configured to receive the second electromagnetic wave and perform charging according to the second electromagnetic wave. In an implementation manner, the second electromagnetic wave may be an electromagnetic wave carried by a qualitative beam emitted by the power supply terminal device to the location where the power receiving terminal device 1300 is located. Under the condition that the charged power of the power receiving end device 1300 meets the normal working requirements of the power receiving end device 1300, the power receiving end device 1300 can start to work normally.

In a possible design, when the voltage of the power receiving end device 1300 after charging is greater than the minimum working voltage of the power supply end device 1300, the power receiving end device 1300 starts to work normally.

In a possible design, the sending unit 1302 is configured to send a second message to the power supply end device, where the second message is used to indicate the power consumption of the power receiving end device 1300 . So that the power supply end device determines the power replenishment time of the power receiving end device 1300 according to the second message.

It should be noted that, all relevant contents of the steps involved in the above method embodiments can be cited in the functional description of the corresponding functional module, which will not be repeated here.

FIG. 14 shows a schematic diagram of the composition of a power receiving end device 1400 . As shown in FIG. 14 , the power receiving end device 1400 may include: a processor 1401 and a memory 1402 . The memory 1402 is used to store computer-implemented instructions. Exemplarily, in some embodiments, when the processor 1401 executes the instructions stored in the memory 1402, the power receiving device 1400 can be made to execute the wireless charging method shown in any one of the foregoing embodiments.

It should be noted that, all relevant contents of the steps involved in the above method embodiments can be cited in the functional description of the corresponding functional module, which will not be repeated here.

FIG. 15 shows a schematic diagram of the composition of a chip system 1500 . The chip system 1500 can be applied to a power receiving device. Exemplarily, the system-on-a-chip 1500 may include: a processor 1501 and a communication interface 1502, which are used to support the power receiving device to implement the functions involved in the foregoing embodiments. In a possible design, the chip system further includes a memory for storing necessary program instructions and data of the terminal. The chip system may be composed of chips, or may include chips and other discrete devices. It should be noted that, in some implementation manners of the present application, the communication interface 1502 may also be referred to as an interface circuit.

It should be noted that, all relevant contents of the steps involved in the above method embodiments can be cited in the functional description of the corresponding functional module, which will not be repeated here.

The functions or actions or operations or steps in the above embodiments may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using a software program, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general purpose computer, special purpose computer, computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server, or data center Transmission to another website site, computer, server, or data center by wire (eg, coaxial cable, optical fiber, digital subscriber line, DSL) or wireless (eg, infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or data storage devices including one or more servers, data centers, etc. that can be integrated with the medium. The usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVDs), or semiconductor media (eg, solid state disks (SSDs)), and the like.

Although the application has been described in conjunction with specific features and embodiments thereof, it will be apparent that various modifications and combinations can be made therein without departing from the spirit and scope of the application. Accordingly, this specification and drawings are merely exemplary illustrations of the application as defined by the appended claims, and are deemed to cover any and all modifications, variations, combinations or equivalents within the scope of this application. Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims (16)

1. A wireless charging method, applied to a power supply end device, wherein the power supply end device includes an antenna array, wherein the method includes:

   The antenna array is controlled so that the antenna array emits electromagnetic waves to the first area in a concentrated manner.
2. The method according to claim 1, wherein the first area includes at least one power receiving end device.
3. The method according to claim 1 or 2, wherein the method further comprises:

   The power supply end device receives a first message, where the first message is used to indicate the location of the power supply end device in the first area.
4. The method according to claim 3, wherein the method further comprises:

   The power supply end device controls the antenna array according to the first message, so that the antenna array emits electromagnetic waves in a concentrated manner to a second area, the second area includes the power receiving end device, and the second area is smaller than The power density of electromagnetic waves in the first region and the second region is greater than the power density of electromagnetic waves in the first region.
5. The method according to any one of claims 1-4, wherein the first area is a maximum coverage area of the antenna array.
6. The method according to any one of claims 1-5, wherein the method further comprises:

   The power supply end device receives a second message, where the second message is used to indicate the power consumption of the power supply end device;

   The power supply end device supplements power for the power reception end device according to the power consumption of the power reception end device.
7. The method according to claim 6, wherein the power supply end device performs power supplementation for the power receiving end device according to the power consumption of the power receiving end device, comprising:

   The power supply end device determines a first time period for the power supply end device to supplement power according to the power consumption situation, and the power supply end device supplements the power supply end device for the power supply end device within the first time period. Electricity.
8. A wireless charging method, applied to a power receiving end device, wherein the power receiving end device is provided with an antenna, characterized in that the method comprises:

   The power receiving end device receives the first electromagnetic wave through the antenna, so as to be charged by the first electromagnetic wave; wherein, the first electromagnetic wave is emitted by the power supply end device to the first area, and the power receiving end device is in the in the first area.
9. The method according to claim 8, wherein the method further comprises:

   The power receiving end device sends a first message to the power supplying end device, where the first message is used to indicate a location of the power receiving end device in the first area.
10. The method according to claim 9, wherein when the voltage provided by the electric energy in the power receiving end device reaches the minimum voltage required for sending the first message, the power receiving end device sends the first message. information.
11. The method according to any one of claims 8-10, wherein the method further comprises:

    The power receiving end device receives the second electromagnetic wave through the antenna, so as to be charged by the second electromagnetic wave; the second electromagnetic wave is emitted by the power supply end device in a second area, and the second area is smaller than In the first area, the power density of the second electromagnetic wave is greater than the power density of the first electromagnetic wave, and the power receiving end device is located in the second area.
12. The method according to any one of claims 8-11, wherein the method further comprises:

    The power receiving end device sends a second message to the power supply end device, where the second message is used to indicate the power consumption situation of the power receiving end device, so that the power supply end device, according to the power consumption situation, Supplementary power is provided for the power receiving device.
13. A power supply end device, characterized in that the power supply end device includes one or more processors and one or more memories; the one or more memories are coupled to the one or more processors, and the one or more memories or more memories storing computer instructions;

    When the one or more processors execute the computer instructions, the power supply end device is caused to execute the wireless charging method according to any one of claims 1-7.
14. A power receiving end device, characterized in that the power receiving end device includes one or more processors and one or more memories; the one or more memories are coupled to the one or more processors, and the the one or more memories store computer instructions;

    When the one or more processors execute the computer instructions, the power receiving end device is caused to execute the wireless charging method according to any one of claims 8-13.
15. A chip system, characterized in that the chip includes a processing circuit and an interface; the processing circuit is used to call and run a computer program stored in the storage medium from a storage medium, so as to execute the computer program according to claims 1-7. The wireless charging method according to any one of the claims, or, performing the wireless charging method according to any one of claims 8-13.
16. A wireless charging system, characterized in that the system includes at least one power supply terminal device as claimed in claim 13 and at least one power receiving terminal device as claimed in claim 14 .

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