Wireless charging method and device and storage medium

Abstract

The embodiment of the invention provides a wireless charging method and device and a storage medium. The method comprises the following steps: acquiring a WiFi signal; obtaining extremely narrow millimeter waves; converting the WiFi signal into a microwave signal through a spin torque oscillator (STO); the microwave signal and the ultra-narrow millimeter wave are converted into a direct current output signal through a rectifying device; the direct-current output signal is used for wirelessly charging electronic equipment in an electromagnetic wave mode through the charging module, electric quantity is provided for smart phones, tablet personal computers, notebook computers, wearable equipment, logistics industry, smart home, even IOT systems and the like, and a convenient wireless charging solution is provided for scenes such as families, offices or public places.

Description

Technical Field

[0001] The present invention relates to the field of wireless charging technology, and in particular to a wireless charging method, device and storage medium. Background Art

[0002] Currently, wireless charging has become a common technology, which provides a convenient way to power our devices. Most current wireless chargings use traditional power sources to charge devices compatible with receiver coils through coils embedded in charging boards or charging pads. Summary of the Invention

[0003] Embodiments of the present application provide a wireless charging method, device and storage medium, which can utilize WiFi signals and extremely narrow millimeter waves for charging.

[0004] In a first aspect of the embodiments of the present application, a wireless charging method is provided, and the method includes:

[0005] Obtain a WiFi signal; obtain extremely narrow millimeter waves;

[0006] Convert the WiFi signal into a microwave signal through a spin torque oscillator (STO);

[0007] Convert the microwave signal and the extremely narrow millimeter waves into a DC output signal through a rectifying device;

[0008] Wirelessly charge an electronic device with the DC output signal in the form of electromagnetic waves through a charging module.

[0009] In a second aspect of the embodiments of the present application, a wireless charging device is provided, and the wireless charging device includes:

[0010] A WiFi signal device for obtaining a WiFi signal;

[0011] A spin torque oscillator (STO) for converting the WiFi signal into a microwave signal;

[0012] An extremely narrow millimeter wave device for obtaining extremely narrow millimeter waves;

[0013] A rectifying device for converting the WiFi signal into a DC output signal;

[0014] A charging module for wirelessly charging an electronic device with the DC output signal and the extremely narrow millimeter waves in the form of electromagnetic waves.

[0015] In a third aspect, an embodiment of the present application provides a computer-readable storage medium for storing a computer program that causes a computer to execute instructions for performing some or all of the steps described in the first aspect of the embodiment of the present application.

[0016] In a fourth aspect, an embodiment of the present application provides a computer program product, which includes a non-transitory computer-readable storage medium storing a computer program. The computer program is operable to cause a computer to execute some or all of the steps described in the first aspect of the embodiment of the present application. This computer program product can be a software installation package.

[0017] Implementing the embodiments of the present application has the following beneficial effects:

[0018] It can be seen that through the wireless charging method, device, and storage medium described in the embodiments of the present application, a WiFi signal is acquired; an extremely narrow millimeter wave is acquired; the WiFi signal is converted into a microwave signal by a spin torque oscillator (STO); the microwave signal and the extremely narrow millimeter wave are converted into a DC output signal by a rectifying device; and the DC output signal is used to wirelessly charge an electronic device in the form of an electromagnetic wave through a charging module, thereby realizing wireless charging through a WiFi signal and an extremely narrow millimeter wave, providing power for smart phones, tablet computers, wearable devices, the logistics industry, smart homes, and even Internet of Things (IoT) systems, etc., and providing a convenient wireless charging solution for scenarios such as homes, offices, or public places. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 A schematic structural diagram of a wireless charging device provided by an embodiment of the present invention;

[0021] Figure 2 A schematic structural diagram of a rectifying device provided by an embodiment of the present invention;

[0022] Figure 3 A schematic structural diagram of a phased array antenna board provided by an embodiment of the present invention;

[0023] Figure 4 A flowchart of the first wireless charging method provided by an embodiment of the present invention;

[0024] Figure 5A demonstration schematic diagram of high-frequency oscillation generated by STO provided by an embodiment of the present invention;

[0025] Figure 6 A schematic flowchart of a wireless charging method according to a second embodiment provided by an embodiment of the present invention;

[0026] Figure 7 A schematic structural diagram of another wireless charging device provided by an embodiment of the present invention;

[0027] Figure 8 A demonstration schematic diagram of an antenna board provided by an embodiment of the present invention. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. The described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art without making creative efforts based on the embodiments in the present application belong to the scope of protection of the present application.

[0029] The terms "first", "second", "third", "fourth", etc. in the specification and claims of the present application and the accompanying drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally further include steps or units not listed, or may optionally further include other steps or units inherent to these processes, methods, products, or devices.

[0030] Referring to "embodiments" herein means that specific features, structures, or characteristics described in connection with the embodiments may be included in at least one embodiment of the present application. The phrase is not necessarily referred to the same embodiment at various positions in the specification, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.

[0031] As Figure 1 shown, Figure 1 A schematic system diagram of a wireless charging device provided by an embodiment of the present invention. The wireless charging device 100 includes an STO 20, a WiFi signal device 30, an extremely narrow millimeter wave device 40, a rectifying device 50, and a charging module 60.

[0032] Among them, the WiFi signal device 30 is used to obtain a WiFi signal;

[0033] A spin torque oscillator STO20 for converting the WiFi signal into a microwave signal;

[0034] An extremely narrow millimeter-wave device 40 for obtaining extremely narrow millimeter waves;

[0035] A rectifying device 50 for converting the microwave signal and the extremely narrow millimeter waves into a DC output signal;

[0036] A charging module 60 for wirelessly charging an electronic device with the DC output signal in the form of electromagnetic waves.

[0037] Among them, the WiFi signal device 30 may include a WiFi signal transmitting device and a WiFi signal receiving device. The extremely narrow millimeter-wave device 40 may include an extremely narrow millimeter-wave transmitting device and an extremely narrow millimeter-wave receiving device. The WiFi signal transmitting device is used to transmit WiFi signals; the extremely narrow millimeter-wave transmitting device is used to transmit extremely narrow millimeter waves. The WiFi signal receiving device can receive the WiFi signals transmitted by the WiFi signal transmitting device, and the WiFi signal receiving device can also receive the WiFi signals transmitted by other devices in the environment. For example, in public places such as large shopping malls or squares, there are many publicly available WiFi signals, and these WiFi signals can be used to charge electronic devices. The WiFi signal receiving device of the wireless charging device can receive the WiFi signals transmitted by routing devices, etc.

[0038] In a specific implementation, the WiFi signal transmitting device may include at least one of the following WiFi chips: 2.4GHz WiFi chip, 5GHz WiFi chip, 5.8GHz (or 6GHz) WiFi chip. The above WiFi chips are used to transmit WiFi signals of different frequencies. The WiFi signal transmitting device may also include multiple power amplifier chips, and the power amplifier chips are used to connect to the WiFi chips and amplify the transmitted WiFi signals.

[0039] The WiFi signal device 30 can also generate WiFi signals inside the wireless charging device and transmit them inside the wireless charging device, and receive them through the inside of the PCB circuit board to provide WiFi signals to the rectifying device.

[0040] The extremely narrow millimeter-wave transmitting device includes a phased array antenna board 21. The phased array antenna board includes multiple antenna boards, and each antenna board includes multiple millimeter-wave transmitting chips. The multiple antenna boards are placed at different angles. For example, 5 antenna boards can be combined together, and each antenna board includes 256 millimeter-wave transmitting chips, then the phased array antenna board can include 1280 millimeter-wave transmitting chips. The multiple antenna boards are placed at different angles, which can increase the millimeter-wave emission range; another example is Figure 3 and Figure 8As shown, the phased array antenna panel may include 5 antenna panels 211. Each antenna panel may include 1280 millimeter-wave transmitting chips. The 5 antenna panels are placed at 5 different angles, and a total of 6400 millimeter-wave transmitting chips are used to emit extremely narrow millimeter waves. The band range of the extremely narrow millimeter waves is, for example, 60 - 80 GHz.

[0041] The extremely narrow millimeter-wave transmitting device may be arranged on a rotating base. The rotating base can automatically rotate 360 degrees to adjust the emission angle of the extremely narrow millimeter-wave transmitting device 20. The rotating base can be, for example, a roller rotating base. In this way, the extremely narrow millimeter-wave transmitting device can emit extremely narrow millimeter waves concentratedly within a larger range. The extremely narrow millimeter-wave receiving device can be an electromagnetic wave sensor.

[0042] The extremely narrow millimeter-wave device 40 can also generate extremely narrow millimeter waves inside the wireless charging device and transmit them inside the wireless charging device, and receive them through the inside of the PCB circuit board to provide extremely narrow millimeter waves for wireless charging.

[0043] As Figure 2 As shown, under the drive of the WiFi signal, the spin torque oscillator (STO) 20 allows a spin-polarized current to pass through the STO 20, causing the magnetization direction of the STO 20 to move, and then generating a microwave signal corresponding to the movement frequency. Among them, the STO includes a free magnetic layer, a reference magnetic layer, and a fixed magnetic layer. There is a non-magnetic spacer layer between the free magnetic layer and the reference magnetic layer. When the spin-polarized current passes through the non-magnetic spacer layer, a self-rotation torque is generated on the magnetization of the free magnetic layer. When the self-rotation torque exceeds a preset critical value, the magnetization of the free magnetic layer rotates around an effective magnetic field direction, and then generates a microwave signal corresponding to the movement frequency.

[0044] The rectifying device 50 may include a rectifier 52 and a voltage regulator 53. The microwave signal output by the STO 20 and the extremely narrow millimeter waves are rectified into direct current signals through the rectifier 52; the direct current signals are regulated in voltage through the voltage regulator 53 to output a stable direct current output signal.

[0045] In this way, electrical energy can be generated by using the WiFi signal through the rectifying device 50 without an external power supply.

[0046] The rectifying device 50 may also include a multi-frequency modulator 54 and a power combiner 51. The corresponding modulation frequency and amplitude are selected according to the oscillation frequency and output power of the STO 20. The microwave signals output by different STOs are converted into microwave signals with the same frequency through the multi-frequency modulator 54;

[0047] The microwave signals output from the multi-frequency modulator 54 are phase-matched and power-summed through a power combiner 51 to obtain aggregated microwave signals.

[0048] In this way, the microwave signals output from multiple STOs can be energy-aggregated to increase the output power of the DC output signal. Through the multi-frequency modulator, the frequency mismatch problem and power imbalance problem between multiple STOs can be effectively solved, the efficiency of energy collection and utilization can be improved, the number of connections and connection complexity between the STO and other modules can be reduced, and the equipment cost and volume can be decreased.

[0049] The wireless charging device 100 may further include a positioning device 70 that scans for electronic devices within a set range and determines the positions and distances of the electronic devices; and adjusts the oscillation frequency of the STO according to the positions and distances of the electronic devices, wherein the oscillation frequency of the STO is adjusted by adjusting at least one of the following parameters: the rotation scale factor, the effective magnetic field strength, the anisotropic magnetic field strength, and the saturation magnetization intensity.

[0050] The positioning device 70 includes at least one of the following: a beacon antenna 71, a lidar sensor 72, a proximity sensor 73, an infrared sensor 74, an Institute of Electrical and Electronics Engineers 802.11MC module 75, and a UWB device 76.

[0051] The beacon antenna can scan for signals from any electronic device (such as smartphones, smartwatches, tablets, laptops, etc.) within a 360-degree range. The lidar sensor 72 emits infrared light beams at objects and calculates their distances and positions based on the flight time of the light, and can also create a three-dimensional map of the space for convenient calculation. The proximity sensor 73 and the infrared sensor 74 are used to detect the proximity of objects and humans, thereby achieving spatial positioning and human sensing. The 802.11MC module determines the approximate position of the electronic device by detecting the signal strength of the electronic device. The ultra-wideband (UWB) device is used to detect the position of the electronic device and the position between the wireless charging device through Bluetooth communication within a range of dozens of meters and other positioning devices. The wireless charging device can adjust the output power according to the data collected by the positioning device to protect humans from high-energy electromagnetic waves.

[0052] The positioning device 70 can be arranged on a rotating base to adjust the detection range of the positioning device.

[0053] Detect whether a person or an object is approaching through the infrared sensor; detect the degree of approach of the person or object through the proximity sensor; when a person or an object is detected within a preset distance range, control the charging module to pause wirelessly charging the electronic device in the form of electromagnetic waves with the DC output signal. The infrared sensor can detect whether there is a person within one meter of the wireless charging device. When a person is detected, the infrared sensor detects and sends a signal to the main chip to pause all power output to protect the human body from the influence of electromagnetic waves.

[0054] The following provides a detailed introduction to the wireless charging method applied to the above wireless charging device.

[0055] Please refer to Figure 4 , Figure 4 The flowchart of the first wireless charging method provided by the embodiment of the present invention. The wireless charging method described in this embodiment is applied to a wireless charging device, and the method includes the following steps:

[0056] S201. Obtain a WiFi signal; obtain an extremely narrow millimeter wave.

[0057] Among them, the wireless charging device may include a WiFi signal device and an extremely narrow millimeter wave device. The WiFi signal device can receive the WiFi signal sent by the WiFi signal receiving device through the WiFi signal receiving device, and the WiFi signal device can also receive the internally transmitted WiFi signal through the PCB circuit board. The extremely narrow millimeter wave device can receive the extremely narrow millimeter wave sent by the extremely narrow millimeter wave transmitting device through the extremely narrow millimeter wave receiving device, and the extremely narrow millimeter wave device can also receive the internally transmitted extremely narrow millimeter wave through the PCB circuit board.

[0058] In one implementation, the WiFi signal receiving device 30 is used to receive the WiFi signal; the extremely narrow millimeter wave receiving device 40 is used to receive the extremely narrow millimeter wave; the WiFi signal receiving device can receive WiFi signals with different transmission frequencies, such as at least one of 2.4 GHz, 5 GHz, and 5.8 GHz.

[0059] S202. Convert the WiFi signal into a microwave signal through the spin torque oscillator STO.

[0060] Under the drive of the WiFi signal, a spin-polarized current passes through the STO, causing the STO to generate a magnetization direction movement, and then generating a microwave signal corresponding to the movement frequency.

[0061] S203. Convert the microwave signal and the extremely narrow millimeter wave into a DC output signal through a rectifying device.

[0062] Among them, the rectifying device can convert microwave signals and extremely narrow millimeter waves into a DC output signal. Specifically, electrical energy can be generated from microwave signals and extremely narrow millimeter waves, and this electrical energy can be used to charge electronic devices.

[0063] S204. Wirelessly charge the electronic device with the DC output signal in the form of electromagnetic waves through a charging module.

[0064] In this solution, the magnetic confinement energy focusing technology (MCEFT) and the directional beamforming technology (DBT) can be specifically adopted to transmit the DC output signal generated by the rectifying device, that is, electrical energy, to the electronic device.

[0065] It can be seen that through the wireless charging method provided by the embodiments of the present application, a WiFi signal is obtained; an extremely narrow millimeter wave is obtained; the WiFi signal is converted into a microwave signal through a spin torque oscillator STO; the microwave signal and the extremely narrow millimeter wave are converted into a DC output signal through a rectifying device; and the electronic device is wirelessly charged with the DC output signal in the form of electromagnetic waves through a charging module, providing power for smartphones, tablets, wearable devices, the logistics industry, smart homes, and even IoT systems, etc., and providing a convenient wireless charging solution for scenarios such as homes, offices, or public places.

[0066] Converting the WiFi signal into a microwave signal through a spin torque oscillator STO includes:

[0067] Driven by the WiFi signal, a spin-polarized current passes through the STO, causing the STO to generate a magnetization direction movement, and thus generating a microwave signal corresponding to the movement frequency.

[0068] In the present application, the STO can collect the WiFi signal and convert it into energy, such as Figure 5As shown in the figure, it is a schematic diagram of the working principle of an STO. Among them, the STO is a device that uses a spin-polarized current to drive a nanomagnet to generate high-frequency oscillations. A structure of the STO includes three magnetic layers, specifically a free magnetic layer 31, a reference magnetic layer 32, and a fixed magnetic layer 33. There is a non-magnetic spacer layer between the free magnetic layer and the reference magnetic layer. When the spin-polarized current passes through the non-magnetic spacer layer, a self-rotation torque is generated on the magnetization of the free magnetic layer. When the self-rotation torque exceeds a preset critical value, the magnetization of the free magnetic layer rotates around an effective magnetic field direction, resulting in a periodic change in the resistance of the STO, thereby generating a high-frequency oscillation signal, that is, a microwave signal corresponding to the movement frequency. In this solution, an input current can be set. When the input current passes through a heavy metal layer with strong spin-orbit coupling (such as Pt), due to the spin Hall effect or the inverse spin Galvanic effect, the input current will be converted into a spin-polarized current perpendicular to the current direction.

[0069] The STO can collect WiFi signals. The WiFi signals provide an external magnetic field for the STO, that is, drive the STO through the electromagnetic wave energy of the WiFi signals. The oscillation frequency of the STO can be controlled by adjusting the input current and the external magnetic field.

[0070] The formula for the STO to convert WiFi signals into charging output is as follows:

[0071]

[0072] Where V DC is the DC voltage, R STO is the resistance of the STO, V AC is the AC voltage, R L is the load resistance, and θ is the magnetization angle between the free magnetic layer and the reference magnetic layer.

[0073] Optionally, in the above step S202, converting the microwave signal and the extremely narrow millimeter wave into a DC output signal through a rectifying device includes:

[0074] Rectifying the microwave signal output by the STO and the extremely narrow millimeter wave into a DC electrical signal through a rectifier;

[0075] Regulating the voltage of the DC electrical signal through a voltage regulator to output a stable DC output signal.

[0076] Among them, the rectifier is used to convert the positive and negative half-cycles of the alternating current into a current in the same direction, and the voltage regulator is used to regulate the unstable voltage into a constant voltage for charging electronic devices.

[0077] Optionally, the number of STOs includes multiple, and the method further includes:

[0078] Select the corresponding modulation frequency and amplitude according to the oscillation frequency and output power of the STO, and convert the microwave signals output by different STOs into microwave signals with the same frequency through a multi-frequency modulator;

[0079] Perform phase matching and power superposition on the microwave signals output from the multi-frequency modulator through a power combiner to obtain an aggregated microwave signal.

[0080] Among them, multiple STOs can be respectively connected to a multi-frequency modulator. The multi-frequency modulator can select the corresponding modulation frequency and amplitude according to the oscillation frequency and output power of the STO, and convert the microwave signals output by different STOs into microwave signals with the same frequency; the microwave signals output by multiple multi-frequency modulators can be subjected to phase matching and power superposition through a power combiner, thereby realizing energy aggregation, improving the efficiency of energy collection and utilization, increasing the output power, and then the aggregated microwave signal can be input into a rectifier to be rectified into a DC electrical signal.

[0081] Optionally, the STO includes a free magnetic layer, a reference magnetic layer, and a fixed magnetic layer. There is a non-magnetic spacer layer between the free magnetic layer and the reference magnetic layer. When a spin-polarized current passes through the non-magnetic spacer layer, a self-rotation torque is generated on the magnetization of the free magnetic layer. When the self-rotation torque exceeds a preset critical value, the magnetization of the free magnetic layer rotates around an effective magnetic field direction, and then a microwave signal corresponding to the motion frequency is generated; the method further includes:

[0082] Obtain the rotation scaling factor, effective magnetic field strength, anisotropic magnetic field strength, and saturation magnetization intensity of the magnetization rotation motion;

[0083] Determine the oscillation frequency of the STO according to the rotation scaling factor, effective magnetic field strength, anisotropic magnetic field strength, and saturation magnetization intensity.

[0084] Among them, the specific formula for calculating the oscillation frequency of the STO is as follows:

[0085]

[0086] Among them, f is the oscillation frequency of the STO, γ is the rotation scaling factor, H eff is the effective field strength, H K is the anisotropic field strength, M s is the saturation magnetization intensity, and the effective field includes an external magnetic field, an exchange field, a damping field, and a self-rotation torque, etc.

[0087] Optionally, the method further includes:

[0088] Obtain the quantity, resistance, load resistance, AC voltage of the STO, and the magnetization angles of the free magnetic layer and the reference magnetic layer;

[0089] Determine the output power of the STO according to the quantity, resistance, load resistance, AC voltage of the STO, and the magnetization angles of the free magnetic layer and the reference magnetic layer.

[0090] The equation for the output power can be expressed in the following way:

[0091]

[0092] where, P DC is the output power, N is the quantity of the STO, R STO is the resistance of the STO, R L is the load resistance, V AC is the AC voltage, and θ is the magnetization angle between the free magnetic layer and the reference magnetic layer.

[0093] It can be seen that when the quantity of the STO is increased, the output power will change because the quantity of the STO affects the resistance and voltage of the STO array. The output power is proportional to the square of the quantity N of the STO. Increasing the quantity of the STO can increase the output power. However, this will also increase the resistance of the STO array, thereby reducing the rectification efficiency. Therefore, to achieve the optimal output power and rectification efficiency, a balance needs to be found between the quantity of the STO and the resistance value.

[0094] Optionally, the method further includes:

[0095] Transmit the extremely narrow millimeter wave through a phased array antenna panel, where the phased array antenna panel includes a plurality of antenna panels, each antenna panel includes a plurality of millimeter wave transmitting chips, and the plurality of antenna panels are placed at different angles.

[0096] Among them, the phased array antenna panel includes a plurality of antenna panels, each antenna panel includes a plurality of millimeter wave transmitting chips, and the plurality of antenna panels are placed at different angles, which can increase the transmission range. For example, 5 antenna panels can be combined together, each antenna panel includes 256 millimeter wave transmitting chips, then the phased array antenna panel can include 1280 millimeter wave transmitting chips. The plurality of antenna panels are placed at different angles, which can increase the millimeter wave transmission range; for another example, the phased array antenna panel can include 5 antenna panels, each antenna panel can include 1280 millimeter wave transmitting chips, and the 5 antenna panels are placed at 5 different angles, and the extremely narrow millimeter wave is transmitted through a total of 6400 millimeter wave transmitting chips.

[0097] Optionally, the method further includes:

[0098] Scan electronic devices within a set range through the positioning device, and determine the positions and distances of the electronic devices;

[0099] Adjust the oscillation frequency of the STO according to the positions and distances of the electronic devices, where the oscillation frequency of the STO is adjusted by adjusting at least one of the following parameters: the rotation scale factor, the effective magnetic field strength, the anisotropic magnetic field strength, and the saturation magnetization intensity.

[0100] Among them, the oscillation frequency of the STO can be determined according to the positions and distances of the electronic devices. The closer the electronic device is, the smaller the oscillation frequency can be adjusted. The farther the electronic device is, the larger the oscillation frequency can be adjusted. The positioning device includes at least one of the following: a beacon antenna, a lidar sensor, a proximity sensor, an infrared sensor, an Institute of Electrical and Electronics Engineers 802.11MC module, and a UWB device. The beacon antenna can scan signals from any electronic device (such as a smartphone, smartwatch, tablet computer, laptop computer, etc.) within a 360-degree range. The lidar sensor emits infrared light beams to objects and calculates their distances and positions based on the flight time of the light. The proximity sensor and the infrared sensor are used to detect the proximity of objects and humans, thereby achieving spatial positioning and human body sensing. The 802.11MC module determines the approximate position of the electronic device by detecting the signal strength of the electronic device. The UWB device is used to detect the position of the electronic device and the position between the wireless charging device through Bluetooth communication within a range of dozens of meters and other positioning devices. The wireless charging device can adjust the output power according to the data collected by the positioning device to protect humans from high-energy electromagnetic waves.

[0101] Optionally, the phased array antenna board and the positioning device are arranged on a rotating base, and the method further includes: controlling the rotating base to rotate to adjust the emission angle of the phased array antenna board and the detection range of the positioning device.

[0102] Optionally, the method further includes: detecting whether a person or an object is approaching through the infrared sensor; detecting the proximity of a person or an object through the proximity sensor; when a person or an object is detected within a preset distance range, controlling the charging module to pause wirelessly charging the electronic device in the form of the DC output signal. The infrared sensor can detect whether there is a person within one meter of the wireless charging device. When a person is detected, the infrared sensor detects and sends a signal to the main chip to pause all power output to protect the human body from the influence of electromagnetic waves.

[0103] Optionally, the method further includes:

[0104] Adjust the output power of the STO according to the signal strength of the WiFi signal, wherein the output power of the STO is adjusted by adjusting the number of the STOs.

[0105] Wherein, the distance of the WiFi signal transmission is determined according to the signal strength of the WiFi signal. When the Wi-Fi signal is about 0 - 30 dB, it will be recognized as a short distance; when it is about 31 - 45 dB, it will be recognized as a medium-range distance; when it is about 46 - 60 dB or higher, it may be considered as a long distance. For different distance ranges, the output power of the corresponding STO can be adjusted to ensure that the output power of the direct current signal meets the charging requirements of the long-distance range.

[0106] The equation of the output power can be expressed in the following way:

[0107]

[0108] Wherein, P DC is the output power, N is the number of the STOs, R STO is the resistance of the STO, R L is the load resistance, V AC is the alternating current voltage, and θ is the magnetization angle between the free magnetic layer and the reference magnetic layer.

[0109] It can be seen that when the number of the STOs increases, the output power will change because the number of the STOs will affect the resistance and voltage of the STO array. The output power is proportional to the square of the number N of the STOs. Increasing the number of the STOs can increase the output power. However, this will also increase the resistance of the STO array, thereby reducing the rectification efficiency. Therefore, to achieve the optimal output power and rectification efficiency, a balance needs to be found between the number of the STOs and the resistance value.

[0110] Optionally, the method further includes:

[0111] Obtain the network usage rate of the electronic device;

[0112] If the network usage rate is less than or equal to the first preset value, determine the target usage rate range where the network usage rate is located;

[0113] Determine the target rectification efficiency range corresponding to the target usage rate range;

[0114] Adjust the number of the STOs so that the rectification efficiency of the rectification device reaches the target rectification efficiency range.

[0115] Among them, the network usage rate of the electronic device connected to the wireless charging device can be detected. For example, if the network usage rate is greater than 70%, WiFi energy conversion is not performed, that is, the operation of "converting the WiFi signal into a microwave signal through the spin torque oscillator STO; converting the microwave signal into a DC output signal through a rectifying device" is not executed. The extremely narrow millimeter wave can be converted into a DC output signal through a rectifying device to perform wireless charging through the extremely narrow millimeter wave. If the network usage rate is between 50% and 70%, a rectification efficiency of 40%-50% can be set considering energy loss. When the network usage rate is below 20%, a rectification efficiency of 60%-80% can be set.

[0116] Among them, the rectifier may include a rectifying antenna. The rectification efficiency of the rectifying antenna is related to factors such as the shape and size of the antenna, the material and structure of the rectifier, and can be expressed by the following equation:

[0117]

[0118] Where η is the rectification efficiency, P DC is the DC power, P RF is the RF power, λ is the wavelength of the radio wave, L is the length of the antenna, V0 is the output voltage of the rectifier, V t is the critical voltage of the rectifier.

[0119] Rectification can also be performed through the STO. The rectification efficiency of the STO array is related to factors such as the number of STOs, connection method, size, material, etc., and can be expressed by the following equation:

[0120]

[0121] Where η is the rectification efficiency, P DC is the DC power, P RF is the RF power, V DC is the DC voltage, R L is the load resistance, N is the number of STOs, R STO is the resistance of the STO, and θ is the magnetization angle between the free magnetic layer and the reference magnetic layer.

[0122] To increase the rectification efficiency, it is necessary to increase the DC power or reduce the RF power. The DC power can be increased by methods such as increasing the number of STOs, adjusting the applied current or magnetic field, and selecting appropriate materials and structures. The RF power can be reduced by methods such as setting sensitive and adaptable antennas and reducing signal loss and interference.

[0123] Optionally, the wireless charging device includes a transmitting device, and the transmitting device includes an iron-nitrogen permanent magnet. The wireless charging of the electronic device with the DC output signal in the form of electromagnetic waves through the charging module includes:

[0124] The DC output signal is transmitted to the transmitting device through the charging module;

[0125] The DC output signal is focused in the form of electromagnetic waves in a magnetic confinement manner by the iron-nitrogen permanent magnet and transmitted to the electronic device.

[0126] The transmitting device can adopt the magnetic confinement energy focusing technology. The iron-nitrogen permanent magnet of the transmitting device can form a stable magnetic field through the magnetization effect. Since the iron-nitrogen permanent magnet has a high magnetic moment and high coercive force, the magnetic field trajectory of the emitted electromagnetic wave is changed. After the trajectory is changed, the electromagnetic wave is magnetized and then transmitted to the electronic device to achieve long-distance wireless charging.

[0127] Optionally, the charging module includes an iron-nitrogen permanent magnet. The wireless charging of the electronic device by the charging module in the form of electromagnetic waves for the DC output signal includes:

[0128] The DC output signal is focused in the form of electromagnetic waves in a magnetic confinement form by the iron-nitrogen permanent magnet and transmitted to the electronic device.

[0129] Among them, the charging module can adopt the magnetic confinement energy focusing technology. The iron-nitrogen permanent magnet of the charging module can form a stable magnetic field through the magnetization effect. Since the iron-nitrogen permanent magnet has a high magnetic moment and high coercive force, the magnetic field trajectory of the emitted electromagnetic wave is changed. After the trajectory is changed, the electromagnetic wave is magnetized and then transmitted to the electronic device to achieve long-distance wireless charging.

[0130] By using an iron-nitrogen permanent magnet to focus the DC output signal in the form of electromagnetic waves in a magnetic confinement form and transmit it to the electronic device, the iron-nitrogen permanent magnet has a higher magnetic energy output and coercive force, can achieve higher-precision magnetic induction. As a magnetic transmission medium, the iron-nitrogen permanent magnet can achieve more efficient energy transmission and control, and achieve more efficient, longer-distance, and higher-power wireless charging. For example, it can provide wireless charging for multiple electronic devices within a range of 5-7 meters.

[0131] The iron-nitrogen permanent magnet can include R2Fe17, R2Fe17Nx or R2Fe17xH. The iron-nitrogen permanent magnet is manufactured by mechanical alloying, rapid solidification and spray deposition, realizing controllable, efficient and low-cost material manufacturing, thus reducing costs. The performance of the iron-nitrogen permanent magnet can be optimized by controlling the grain size, lattice distortion and magnetic anisotropy. The iron-nitrogen permanent magnet has higher magnetic energy output and coercivity, and can achieve higher-precision magnetic induction. As a magnetic transmission medium, the iron-nitrogen permanent magnet can adopt non-contact electric field control technology and temperature control technology to control the direction of its magnetic vector and transform it into a magnon-induced magnetic state. By changing the intensity and direction of the external magnetic field and the internal temperature of the iron-nitrogen permanent magnet, the transmission and control of energy can be realized. Due to the advantages of high coercivity and high magnetic anisotropy, the iron-nitrogen permanent magnet can achieve more efficient energy transmission and control. In addition, the advantages of fast charging and energy saving can also be realized. By changing the magnetic field, direction and temperature of the iron-nitrogen permanent magnet, the energy beam of the DC output signal is focused and released in the form of magnetic confinement to the electronic device for charging. Due to the concentrated emission of energy, more efficient, longer-distance and higher-power wireless charging can be achieved, improving convenience, compared with the prior art.

[0132] In addition to using electric field control technology and temperature control technology, wireless charging can also be achieved through spin-orbit coupling and spin polarization. By utilizing the interaction between spin and orbital angular momentum and the spin polarization effect in the iron-nitrogen permanent magnet, energy can be transmitted. The interaction between spin and orbital angular momentum can transfer energy to nitrogen atoms, thus generating a spin polarization effect. This spin polarization effect can form a spin polarization layer on the surface of the iron-nitrogen permanent magnet, generating a magnetic field on its surface, thus realizing wireless charging. The spin-orbit coupling and spin polarization effect of the iron-nitrogen permanent magnet can achieve efficient energy transmission, thus improving the charging efficiency and speed. Moreover, the cost of the iron-nitrogen permanent magnet is relatively low and it can be mass-produced, reducing the cost of wireless charging.

[0133] Most of the currently available wireless charging solutions utilize electromagnetic induction, where the coil is embedded in the charging board or charging pad, and the device equipped with a compatible receiver coil needs to be placed directly on the charging surface to initiate power transmission. Although this method does not require a physical cable, it still requires the device to maintain direct contact with the charging surface. This limitation can cause inconvenience because users must carefully align the device with the charging board and ensure that they remain in the correct position throughout the charging process. The situation becomes more complex when charging multiple devices simultaneously or using the device while charging. This solution can perform wireless charging without direct physical contact with the charging surface by adopting an iron-nitrogen permanent magnet.

[0134] Optionally, the method is applied to a wireless charging device, which includes multiple transmitting devices. In the AI mesh networking mode, the multiple transmitting devices form multiple network nodes of the AI mesh network; the method further includes:

[0135] Transmit the DC output signal to at least some of the multiple transmitting devices through the charging module;

[0136] In the AI mesh networking mode, wirelessly charge the electronic device through at least some of the multiple transmitting devices.

[0137] Mesh networking is based on a wireless sensor network. Generally speaking, under the Mesh networking protocol, a Mesh network is composed of multiple network nodes that communicate with each other to form a network with self-organizing and self-healing capabilities. In the Mesh networking protocol, each network node can be used as a router and a terminal device. In the AI mesh networking mode, an AI mesh network can be formed by multiple routing devices to provide a wider wireless network. There is a main routing device among the multiple routing devices, and this main routing device is set to the AI mesh networking mode. Other routing devices can join the AI mesh network, so as to achieve a wider coverage of the wireless charging range through multiple routing devices. In this solution, the AI mesh networking technology is adopted to provide a wider wireless charging service through multiple transmitting devices. Moreover, each transmitting device can wirelessly charge multiple electronic devices simultaneously, so that multiple electronic devices can be charged at the same time.

[0138] In the AI mesh networking mode, one transmitting device and other multiple transmitting devices connect all extremely narrow millimeter-wave and Wi-Fi signals. The AI mesh networking technology can achieve extended mesh network functions, realize the expansion of the Wi-Fi signal coverage range, Wi-Fi energy transmission, and increase the wireless charging output power, improve network efficiency and wireless charging resource management, and provide a better user experience. In the AI Mesh networking mode, multiple wireless charging devices are connected to each other to achieve the expansion of the Wi-Fi signal coverage range, Wi-Fi energy transmission, and increase the wireless charging output power, increase the number of transmitting devices, and each transmitting device can charge multiple electronic devices.

[0139] Consistent with the Figure 4 shown embodiment, please refer to Figure 6 , Figure 6 which is a schematic flowchart of the wireless charging method according to the second embodiment provided by the embodiment of the present invention. As Figure 6 shown, this wireless charging method includes:

[0140] S301. Obtain a WiFi signal; obtain an extremely narrow millimeter wave.

[0141] S302. Under the drive of the said WiFi signal, make the spin-polarized current pass through the STO, cause the magnetization direction of the STO to move, and then generate a microwave signal corresponding to the movement frequency.

[0142] S303. Select corresponding modulation frequencies and amplitudes according to the oscillation frequency and output power of the said STO, and convert the microwave signals output by different said STOs into microwave signals with the same frequency through a multi-frequency modulator.

[0143] S304. Perform phase matching and power superposition on the microwave signals output from the said multi-frequency modulator through a power combiner to obtain an aggregated microwave signal.

[0144] S305. Rectify the said microwave signal and the extremely narrow millimeter wave into a direct current signal through the rectifier.

[0145] S306. Perform voltage stabilization adjustment on the said direct current signal through a voltage regulator to output a stable direct current output signal.

[0146] S307. Charge the electronic device wirelessly in the form of electromagnetic waves with the said direct current output signal through a charging module.

[0147] For the specific implementation details of the above steps, reference can be made to the specific details of the above embodiments, which will not be elaborated here.

[0148] It can be seen that in the embodiment of the present application, by using the STO, the WiFi signal can be collected and converted into energy. The STO can convert the WiFi signal into a microwave signal. Connect multiple STOs to a multi-frequency modulator respectively. The multi-frequency modulator can select corresponding modulation frequencies and amplitudes according to the oscillation frequency and output power of the STO, and convert the microwave signals output by different STOs into microwave signals with the same frequency; the microwave signals output by multiple multi-frequency modulators can be subjected to phase matching and power superposition through a power combiner, so as to realize energy aggregation, thereby improving the efficiency of energy collection and utilization, increasing the output power, and then the aggregated microwave signal can be input into the rectifier and rectified into a direct current signal.

[0149] Consistent with the Figures 1-6 shown embodiment, please refer to Figure 7 , Figure 7A schematic structural diagram of a wireless charging device provided by an embodiment of the present invention. The wireless charging device includes a WiFi signal receiving device 30, a millimeter-wave receiving device 40, a rectifying device 50, a charging module 60, a processor 10, and a memory 80; and one or more programs, and the one or more programs are stored in the memory. The above-mentioned memory 80 can be a high-speed RAM memory or a non-volatile memory, such as a disk memory. The above-mentioned memory 80 is used to store a set of program codes, and the processor 10 is used to call the program codes stored in the memory 80 and perform the following operations:

[0150] Obtain a WiFi signal; obtain an extremely narrow millimeter wave;

[0151] Convert the WiFi signal into a microwave signal through a spin torque oscillator (STO);

[0152] Convert the microwave signal and the extremely narrow millimeter wave into a DC output signal through a rectifying device;

[0153] Wirelessly charge an electronic device in the form of electromagnetic waves with the DC output signal through a charging module.

[0154] Optionally, in terms of converting the WiFi signal and the extremely narrow millimeter wave into a DC output signal through the rectifying device, the above-mentioned processor 10 is specifically used for:

[0155] Rectify the microwave signal and the extremely narrow millimeter wave into a DC electrical signal through the rectifier;

[0156] Regulate the voltage of the DC electrical signal through a voltage regulator to output a stable DC output signal.

[0157] Optionally, the number of the STOs includes multiple, and the above-mentioned processor 10 is further used for:

[0158] Select corresponding modulation frequencies and amplitudes according to the oscillation frequency and output power of the STO, and convert the microwave signals output by different STOs into microwave signals with the same frequency through a multi-frequency modulator;

[0159] Perform phase matching and power superposition on the microwave signals output from the multi-frequency modulator through a power combiner to obtain an aggregated microwave signal.

[0160] Optionally, converting the WiFi signal into a microwave signal through a spin torque oscillator (STO) includes:

[0161] Driven by the WiFi signal, a spin-polarized current passes through the STO, causing the magnetization direction of the STO to move, and further generating a microwave signal corresponding to the movement frequency; the STO includes a free magnetic layer, a reference magnetic layer, and a fixed magnetic layer. There is a non-magnetic spacer layer between the free magnetic layer and the reference magnetic layer. When the spin-polarized current passes through the non-magnetic spacer layer, a self-rotation torque is generated on the magnetization of the free magnetic layer. When the self-rotation torque exceeds a preset critical value, the magnetization of the free magnetic layer rotates around an effective magnetic field direction, and further generates a microwave signal corresponding to the movement frequency; the above-mentioned processor 10 is further configured to:

[0162] Obtain the rotation scale factor, effective magnetic field strength, anisotropic magnetic field strength, and saturation magnetization strength of the magnetization rotation movement;

[0163] Determine the oscillation frequency of the STO according to the rotation scale factor, effective magnetic field strength, anisotropic magnetic field strength, and saturation magnetization strength.

[0164] Optionally, the above-mentioned processor 10 is further configured to:

[0165] Obtain the number, resistance, load resistance, AC voltage of the STO, and the magnetization angles of the free magnetic layer and the reference magnetic layer;

[0166] Determine the output power of the STO according to the number, resistance, load resistance, AC voltage of the STO, and the magnetization angles of the free magnetic layer and the reference magnetic layer.

[0167] Optionally, the wireless charging device further includes a phased array antenna board, and the above-mentioned processor 10 is further configured to:

[0168] Transmit the extremely narrow millimeter wave through the phased array antenna board, where the phased array antenna board includes a plurality of antenna boards, each antenna board includes a plurality of millimeter wave transmitting chips, and the plurality of antenna boards are placed at different angles.

[0169] Optionally, the wireless charging device further includes a positioning device, and the above-mentioned processor 10 is further configured to:

[0170] Scan electronic devices within a set range through the positioning device, and determine the positions and distances of the electronic devices;

[0171] Adjust the oscillation frequency of the STO according to the positions and distances of the electronic devices, where the oscillation frequency of the STO is adjusted by adjusting at least one of the following parameters: the rotation scale factor, effective magnetic field strength, anisotropic magnetic field strength, saturation magnetization strength.

[0172] The positioning device includes at least one of the following: beacon antenna, lidar sensor, proximity sensor, infrared sensor, 802.11MC module, ultra-wideband UWB device.

[0173] Optionally, the phased array antenna panel and the positioning device are disposed on a rotating base, and the above-mentioned processor 10 is further configured to: control the rotating base to rotate to adjust the emission angle of the phased array antenna panel and the detection range of the positioning device.

[0174] Optionally, the above-mentioned processor 10 is further configured to:

[0175] Detect whether a person or an object is approaching through the infrared sensor; detect the degree of approach of the person or the object through the proximity sensor;

[0176] When a person or an object is detected within a preset distance range, control the charging module to pause wirelessly charging the electronic device with the DC output signal in the form of electromagnetic waves.

[0177] Optionally, the above-mentioned processor 10 is further configured to: adjust the output power of the STO according to the signal strength of the WiFi signal, wherein the output power of the STO is adjusted by adjusting the number of the STOs.

[0178] Optionally, the above-mentioned processor 10 is further configured to:

[0179] Obtain the network usage rate of the electronic device;

[0180] If the network usage rate is less than or equal to a first preset value, determine the target usage rate range where the network usage rate is located;

[0181] Determine the target rectification efficiency range corresponding to the target usage rate range;

[0182] Adjust the number of the STOs so that the rectification efficiency of the rectification device reaches the target rectification efficiency range.

[0183] Optionally, the charging module includes a ferrite permanent magnet. In terms of wirelessly charging the electronic device with the DC output signal in the form of electromagnetic waves through the charging module, the above-mentioned processor 10 is specifically configured to:

[0184] Focus the DC output signal in the form of electromagnetic waves in a magnetic confinement manner through the ferrite permanent magnet and transmit it to the electronic device.

[0185] Optionally, the wireless charging device includes a transmitting device, and the transmitting device includes an iron-nitrogen permanent magnet. In terms of wirelessly charging the electronic device by the charging module in the form of electromagnetic waves for the DC output signal, the processor 10 is specifically configured to: transmit the DC output signal to the transmitting device through the charging module; focus the DC output signal in the form of electromagnetic waves in a magnetic confinement manner through the iron-nitrogen permanent magnet and transmit it to the electronic device.

[0186] Optionally, the method is applied to a wireless charging device, and the wireless charging device includes a plurality of transmitting devices. In the AI mesh networking mode, the plurality of transmitting devices constitute a plurality of network nodes of the AI mesh networking; the processor 10 is further configured to:

[0187] transmit the DC output signal to at least a part of the plurality of transmitting devices through the charging module;

[0188] in the AI mesh networking mode, wirelessly charge the electronic device through at least a part of the plurality of transmitting devices.

[0189] It can be seen that by acquiring a WiFi signal, acquiring an extremely narrow millimeter wave, converting the WiFi signal into a microwave signal through a spin torque oscillator (STO), converting the microwave signal and the extremely narrow millimeter wave into a DC output signal through a rectifying device, and wirelessly charging the electronic device in the form of electromagnetic waves through the charging module, wireless charging through the WiFi signal and the extremely narrow millimeter wave is realized, providing power for smartphones, tablet computers, laptop computers, wearable devices, the logistics industry, smart homes, and even IOT systems, etc., and providing a convenient wireless charging solution for scenarios such as homes, offices, or public places.

[0190] The embodiment of the present application further provides a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, and the computer program enables the computer to execute some or all of the steps of any method recorded in the above method embodiment, and the computer includes a mobile terminal.

[0191] The embodiment of the present application further provides a computer program product, and the computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to enable the computer to execute some or all of the steps of any method recorded in the above method embodiment. The computer program product can be a software installation package, and the computer includes a mobile terminal.

[0192] It should be noted that, for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that this application is not limited by the described action sequence, because according to this application, certain steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0193] In the above embodiments, the descriptions of the respective embodiments have their own focuses. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0194] In several embodiments provided by this application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the above division of units is only a logical function division. In actual implementation, there can be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection to each other can be through some interfaces. The indirect coupling or communication connection of the device or unit can be in an electrical or other form.

[0195] The units described as separate components above may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place, or they can be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0196] In addition, the functional units in each embodiment of this application can be integrated in a control unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

[0197] When the above integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable memory. Based on this understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a memory and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the above methods in various embodiments of the present application. The aforementioned memory includes various media that can store program codes, such as USB flash drives, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), mobile hard disks, magnetic disks, or optical discs.

[0198] Those of ordinary skill in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by instructing relevant hardware through a program. This program can be stored in a computer-readable memory, and the memory can include: flash drives, read-only memories (abbreviation: ROM, English: Read-Only Memory), random access memories (abbreviation: RAM, English: Random Access Memory), magnetic disks, or optical discs, etc.

[0199] The above has introduced the embodiments of the present application in detail. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A wireless charging method, characterized in that, The wireless charging method includes: Obtaining a WiFi signal; obtaining extremely narrow millimeter waves; Converting the WiFi signal into a microwave signal through a spin torque oscillator (STO); Converting the microwave signal and the extremely narrow millimeter waves into a DC output signal through a rectifying device; Wirelessly charging an electronic device in the form of electromagnetic waves with the DC output signal through a charging module.

2. The wireless charging method according to claim 1, wherein The converting the microwave signal and the extremely narrow millimeter waves into a DC output signal through a rectifying device includes: Rectifying the microwave signal and the extremely narrow millimeter waves into a direct current signal through the rectifier; Regulating the voltage of the direct current signal through a voltage regulator to output a stable DC output signal.

3. The wireless charging method according to claim 1, characterized in that, The number of the STOs includes multiple, and the method further includes: Selecting corresponding modulation frequencies and amplitudes according to the oscillation frequency and output power of the STO, and converting the microwave signals output by different STOs into microwave signals with the same frequency through a multi-frequency modulator; Performing phase matching and power superposition on the microwave signals output by the multi-frequency modulator through a power combiner to obtain an aggregated microwave signal.

4. The wireless charging method according to claim 3, characterized in that, Converting the WiFi signal into a microwave signal through a spin torque oscillator (STO) includes: Under the drive of the WiFi signal, enabling a spin-polarized current to pass through the STO, causing the STO to generate a magnetization direction movement, and then generating a microwave signal corresponding to the movement frequency; The STO includes a free magnetic layer, a reference magnetic layer, and a fixed magnetic layer. There is a non-magnetic spacer layer between the free magnetic layer and the reference magnetic layer. When the spin-polarized current passes through the non-magnetic spacer layer, a self-rotation torque is generated on the magnetization of the free magnetic layer. When the self-rotation torque exceeds a preset critical value, the magnetization of the free magnetic layer rotates around an effective magnetic field direction, and then a microwave signal corresponding to the movement frequency is generated; the method further includes: Obtaining a rotation scaling factor of the magnetization rotation movement, an effective magnetic field strength, an anisotropic magnetic field strength, and a saturation magnetization intensity; Determining the oscillation frequency of the STO according to the rotation scaling factor, the effective magnetic field strength, the anisotropic magnetic field strength, and the saturation magnetization intensity.

5. The wireless charging method according to claim 4, characterized in that The method further includes: Obtaining the number of the STOs, resistance, load resistance, AC voltage of the STO, and magnetization angles of the free magnetic layer and the reference magnetic layer; Determining the output power of the STO according to the number of the STOs, resistance, load resistance, AC voltage of the STO, and magnetization angles of the free magnetic layer and the reference magnetic layer.

6. The wireless charging method according to any one of claims 1-5, characterized in that, The method further includes: Transmitting the extremely narrow millimeter waves through a phased array antenna panel, where the phased array antenna panel includes multiple antenna panels, each antenna panel includes multiple millimeter wave transmitting chips, and the multiple antenna panels are placed at different angles.

7. The wireless charging method according to claim 6, wherein The method further includes: Scanning for electronic devices within a set range through the positioning device and determining the positions and distances of the electronic devices; Adjust the oscillation frequency of the STO according to the position and distance of the electronic device, wherein the oscillation frequency of the STO is adjusted by adjusting at least one of the following parameters: the rotation scale factor, the effective magnetic field strength, the anisotropic magnetic field strength, and the saturation magnetization intensity.

8. The wireless charging method according to claim 7, wherein The positioning device includes at least one of the following: a beacon antenna, a lidar sensor, a proximity sensor, an infrared sensor, an 802.11MC module, and an ultra-wideband UWB device.

9. The wireless charging method according to claim 7, characterized in that, The phased array antenna board and the positioning device are disposed on a rotating base, and the method further includes: Controlling the rotating base to rotate to adjust the emission angle of the phased array antenna board and the detection range of the positioning device.

10. The wireless charging method according to claim 8, wherein, The method further includes: detecting whether a person or an object is approaching through the infrared sensor; detecting the degree of approach of the person or object through the proximity sensor; When a person or an object is detected within a preset distance range, controlling the charging module to suspend wirelessly charging the electronic device with the DC output signal in the form of electromagnetic waves.

11. The wireless charging method according to any one of claims 1-5, characterized in that, The method further includes: Adjust the output power of the STO according to the signal strength of the WiFi signal, wherein the output power of the STO is adjusted by adjusting the number of the STOs.

12. The wireless charging method according to any one of claims 1-5, characterized in that The method further includes: Obtain the network usage rate of the electronic device; If the network usage rate is less than or equal to a first preset value, determine the target usage rate range in which the network usage rate is located; Determine the target rectification efficiency range corresponding to the target usage rate range; Adjust the number of the STOs so that the rectification efficiency of the rectifying device reaches the target rectification efficiency range.

13. The wireless charging method according to any one of claims 1-5, characterized in that, The charging module includes a ferromagnetic permanent magnet. The wireless charging of the electronic device with the DC output signal in the form of electromagnetic waves by the charging module includes: Focusing the DC output signal in the form of electromagnetic waves in a magnetic confinement manner through the ferromagnetic permanent magnet and transmitting it to the electronic device; Or, The wireless charging device includes a transmitting device, and the transmitting device includes a ferromagnetic permanent magnet. The wireless charging of the electronic device with the DC output signal in the form of electromagnetic waves by the charging module includes: Transmitting the DC output signal to the transmitting device through the charging module; Focusing the DC output signal in the form of electromagnetic waves in a magnetic confinement manner through the ferromagnetic permanent magnet and transmitting it to the electronic device.

14. The wireless charging method according to any one of claims 1-5, characterized in that, The method is applied to a wireless charging device, and the wireless charging device includes a plurality of transmitting devices. In the AI mesh networking mode, the plurality of transmitting devices form a plurality of network nodes of the AI mesh networking; the method further includes: Transmitting the DC output signal to at least a part of the plurality of transmitting devices through the charging module; In the AI mesh networking mode, wirelessly charging the electronic device through at least a part of the plurality of transmitting devices.

15. A wireless charging device, characterized in that, The wireless charging device includes: A WiFi signal device for obtaining a WiFi signal; A spin torque oscillator STO for converting the WiFi signal into a microwave signal; An extremely narrow millimeter wave device for obtaining an extremely narrow millimeter wave; A rectifying device for converting the WiFi signal into a DC output signal; A charging module for wirelessly charging an electronic device in the form of electromagnetic waves with the DC output signal and the extremely narrow millimeter wave.

16. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the wireless charging method described in claims 1-14.

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