CN110429723B - Wireless charging microwave power transmission system - Google Patents
Wireless charging microwave power transmission system Download PDFInfo
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- CN110429723B CN110429723B CN201910685502.5A CN201910685502A CN110429723B CN 110429723 B CN110429723 B CN 110429723B CN 201910685502 A CN201910685502 A CN 201910685502A CN 110429723 B CN110429723 B CN 110429723B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/20—Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a wireless charging microwave power transmission system, which can be used for simultaneously and effectively carrying out long-distance non-contact wireless charging on a plurality of devices. The invention is realized by the following technical scheme: the charging signal transmitter continuously transmits microwave wireless chargeable signals to a plurality of charged devices in a chargeable radiation area in a pulse mode through a charging signal transmitting antenna; the charged equipment sends out a charging request signal, the intelligent multi-beam tracking antenna periodically positions and tracks the charging request signal, the charging request signal position of the charged equipment is searched, and according to the determined charging request signal position, the digital processor calculates the required amplitude and phase at each antenna unit port of the transmitting channel so as to enable the generated microwave beam to be aligned with the charged equipment in the chargeable area, and the charged equipment receives microwaves and generates direct current. By locating and tracking the charged device, the remote mobile device is effectively charged.
Description
Technical Field
The invention relates to a microwave wireless charging system which can be widely applied to the fields of consumer electronic products such as smart phones and wearable devices, smart home, automobile electronics, portable medical electronic products and the like, in particular to a microwave wireless charging system which aims at wirelessly transmitting energy in a microwave form and realizes charging of one or more fixed or mobile devices.
Background
Along with the increasing function of electronic products, the energy consumption of the electronic products is also increased, and the electronic products become a great obstacle for the development of the electronic products. When charging, the traditional power equipment mainly adopts a metal wire form to transmit power, and the wired power transmission mode has a plurality of problems. Such as electric shavers, electric toothbrushes, which are often used in wet environments, the presence of electrical connections may lead to accidents. In the conventional wired connection, the damage of the electric wire, the aging of the socket and the like will increase the possibility of electric shock, especially when natural disasters such as floods, earthquakes and the like come to be temporary, the wired power transmission network is often damaged to be unusable, even the situation of electric leakage occurs, and the disaster condition is further worsened. These problems greatly reduce the safety and reliability of the power supply system. In addition, the presence of the huge and interwoven wire feed network and power lines also results in waste of resources and space, increasing construction and maintenance costs. In some special cases, such as application scenes of nuclear pollution areas, cement interiors, medical treatment and the like, the traditional wired power transmission mode cannot be used at all. With the development of technology and the advancement of society, wired power transmission cannot fully meet the increasing application demands of people, and technologies for realizing energy transmission in a wireless manner are becoming more and more important. From the law of electromagnetic induction, it is known that: the alternating current can generate an alternating magnetic field, which is a form of energy that can pass through air, and at the receiving end, the alternating magnetic field can in turn induce an electric current. Therefore, non-contact power supply can be realized by using electromagnetic induction, which is a common power transmission technology using wireless instead of wire, i.e., wireless power transmission technology. The wireless charging technology, i.e., wireless charging technology, means that a device having a battery does not need to use an electric wire to generate electric current at a receiving end in a wireless manner by using electromagnetic fields, electric field waves (microwaves, light waves, etc.), mechanical waves (ultrasonic waves, etc.) or the like as a medium, thereby realizing wireless transmission of electric power. Wireless charging technology is derived from wireless power transfer technology.
Currently, the wireless charging technology mainly comprises four modes of electromagnetic induction type, electric field coupling type, magnetic resonance type and radio wave type. These techniques are applicable to short, medium and long range wireless charging, respectively. Firstly, electromagnetic induction type is the wireless charging technique of short range (millimeter level) through "magnetic coupling", and in electromagnetic induction formula charging process, charging seat and terminal have built-in coil respectively, and when both are close to each other, the charging seat just begins to supply power to the terminal. To improve the power supply efficiency, the positions of the coils must be aligned, and no offset can occur. Through development and popularization for many years, the electromagnetic induction type wireless charging technology has the advantages of high efficiency and simple technology. However, in this charging method, it is required that the charged device must be placed on the charging stand to ensure complete anastomosis between the power transmitting coil and the power receiving coil center, and the transmission efficiency will be drastically reduced once misalignment occurs. Second, the electric field coupling type is a short-range (millimeter-sized) wireless charging technique by means of "electric field coupling", which uses an induced electric field generated by coupling two sets of asymmetric dipoles in a vertical direction to achieve wireless power transmission. Although it has the advantages of small volume and low heat generation, less development and supporters are not beneficial to popularization, and meanwhile, the problems of low efficiency and low transmission power exist. Third, magnetic resonance is a medium range (cm-scale) wireless charging technique by means of "electromagnetic coupling resonance", which transmits electrical energy in the form of non-radiative resonances. Like the electromagnetic induction type, the electromagnetic induction type magnetic field is used as a transmission medium, but compared with the electromagnetic induction type magnetic field transmission device, the electromagnetic induction type magnetic field transmission device has the advantages of being capable of improving transmission distance, high in efficiency and good in flexibility. However, the structure of the magnetic resonance wireless charging system is complex, and one transmitting coil, two resonance coils and one receiving coil are generally required. In addition, the farther the transceiver is, the more power is lost in transmission, and the industry is still in the testing stage. Currently, the magnetic resonance type has technical difficulties of miniaturization and high efficiency. Fourth, the radio wave type is a remote wireless charging technology by means of electromagnetic radiation, which transmits electric energy to a remote receiving antenna in the form of microwave radiation, and then outputs direct current electric energy after being processed by rectification and the like, so that the use is most convenient. But the wireless charging mode has the defects of low energy efficiency, large size of components and difficult implantation. In addition, it can generate a lot of electromagnetic radiation, interfere with other electronic equipment, and present health risks. Among the four wireless charging technologies, the electromagnetic induction type wireless charging technology is most widely and mature, other wireless charging technologies are still in a test stage, and many technical problems are not solved, and a certain distance is left from practical application. However, the wireless charging system based on electromagnetic induction has a short transmission distance, is not generally accepted by markets and consumers, and thus the market for wireless charging cannot be rapidly expanded as expected. In addition to the four common wireless charging techniques described above, there are wireless charging techniques in the form of ultrasound and light waves. The wireless charging technology adopting the ultrasonic wave form also has the problems of short transmission distance (in centimeter level) and easy influence by obstacles; although the wireless charging technology adopting the light wave form has good transmission distance and can keep energy concentrated, the charging transmission mode can only transmit energy in the visual range, and has the problems of easy influence by obstacles and immature technology.
In the radio wave type remote wireless charging technology, wireless transmission of energy is performed in the form of microwaves, and after receiving the energy waves, a receiver restores the energy waves to direct current available to the equipment through a resonance circuit and a rectifying circuit. In this way, similar to our usual WiFi wireless network, both parties each have a dedicated antenna, except that this technology delivers not a signal but electrical energy. The frequency of the microwave is between 300MHz and 300GHz, the wavelength is in millimeter-decimeter-meter level, the energy transmission capacity of the microwave is very strong, and the microwave oven in the household is the heating effect of the microwave oven. The microwave wireless charging technology converts microwave energy back into an electric signal, the position and the height are flexible, related devices and terminals are very tiny and convenient, the requirement on the position is very low as long as the device is placed near the charging device, and the charging method is the charging mode which is the most consistent with nature. The microwave resonance mode has a disadvantage in that energy is scattered in all directions, and thus energy utilization efficiency is low. When the receiving and transmitting sides of the device are completely coincident, the energy efficiency of the electromagnetic induction type and the radio wave type reaches a peak value, but the electromagnetic induction type is obviously better. However, as the displacement occurs in the X-Y direction, rapid attenuation occurs in the electromagnetic induction type, whereas the radio wave type is much flatter, and the electromagnetic induction type has considerable usability even if the displacement is larger. Through analysis, the remote wireless charging technology based on radio waves has good development prospect.
With the development of internet of things, it is desirable in most scenarios to perform stable and effective long-distance wireless charging on multiple charged devices, even mobile devices, at the same time. A moving microwave wireless charging system is a good way to solve this problem, and the microwave energy radiated by the transmitting antenna can realize multi-beam irradiation. Although the energy divergence is serious, the problem can be solved by adopting a phased array antenna and adjusting the aperture field distribution of the antenna. The phased array antenna is a beam scanning antenna developed on the basis of the array antenna, and no mechanical movement is needed in the whole beam scanning process, so that the phased array antenna has the advantages of rapid change of beam shape, rapid beam scanning, high reliability and the like. In addition, when a phased array antenna is used as a receiving antenna, functions of positioning and tracking can be realized. Conventional phased array antennas are generally used for transmitting or receiving microwave signals, and the quality of the transmitted signals is mainly considered, and the transmission efficiency of energy carried by the microwave signals between a receiving end and a transmitting end is extremely low.
Disclosure of Invention
The invention aims at the defects of the prior art, and provides a wireless charging microwave power transmission system which can effectively charge a plurality of devices in a long distance at the same time, has no strict limitation on the positions of the devices, and can realize wireless non-contact charging even if the charged devices are in a moving state.
In the present invention, the above object can be achieved by a wireless charging microwave power transmission system comprising: the intelligent multi-beam tracking antenna 1 is arranged at a transmitting end, is used for positioning and tracking charged equipment, and is provided with a charging signal transmitter 2 with a charging signal transmitting antenna 3, and is characterized in that: the charging signal transmitter 2 continuously transmits microwave wireless charging signals to a plurality of charged devices in a chargeable radiation area in a pulse form through the charging signal transmitting antenna 3; the charged equipment sends out a charging request signal, the intelligent multi-beam tracking antenna 1 periodically positions and tracks the charging request signal, searches the position of the charging request signal of the charged equipment, and determines the position of the charging request signal; the digital processor 10 calculates the required amplitude and phase at each antenna element port through the transmit path 9 based on a multi-beam forming algorithm to align the generated microwave beam to a charged device within a chargeable area, which receives microwaves through a wireless charging receiver and generates direct current.
Compared with the prior art, the invention has the following beneficial effects.
The present invention is based on an intelligent multi-beam tracking antenna to provide energy in the form of microwaves to a charged device, and a multi-beam forming algorithm in its internal digital processor 10 calculates the amplitude and phase at each antenna element port required to generate a microwave beam directed at the charged device. When charging is needed, the charged equipment transmits a charging request signal; after receiving the charging request signal, the intelligent multi-beam tracking antenna 1 (an antenna which is improved on the basis of a phased array antenna and is suitable for the system) verifies and passes, then starts to periodically search and position the charged equipment, and controls the beam to aim at the charged equipment by adjusting the amplitude and the phase of each antenna unit port so as to realize wireless charging of the equipment. The charged equipment continuously transmits a charging request signal in a pulse form, and through positioning and tracking, the intelligent multi-beam tracking antenna 1 generates microwave beams which are always aligned to the charged equipment, so that the stability, the continuity and the good transmission distance of the charging process are ensured, and a plurality of charged equipment can be charged simultaneously.
According to the intelligent multi-beam tracking antenna, according to the positioning and tracking of the charged equipment, the required amplitude and phase are generated by controlling the transmitting channel 9, the required microwave beam is radiated through the antenna array surface 7, the microwave energy radiated on the antenna array surface is received through the receiving antenna 13, and the received chargeable microwave power signal is converted into direct-current energy which can be used for charging the battery of the charged equipment or directly supplying power through the rectifier 14. The wireless non-contact charging microwave electric energy transmission is realized, a plurality of devices can be charged at the same time, the positions of the devices are not strictly limited, the use flexibility is high, and the reliability and the safety of the electric appliance are greatly improved. The time for positioning calculation and beamforming is short (in the order of milliseconds) relative to the speed of movement of a typical charged device, sufficient to ensure continuous charging of the charged device during movement. The transmission loss of microwaves in the atmosphere is small, and the concentration of radiated microwave energy can be realized by optimizing the amplitude and the phase of each antenna unit port, so that the problem of microwave energy divergence is overcome, and the long-distance effective wireless charging is realized.
The intelligent multi-beam tracking antenna periodically monitors the position of the charged equipment, continuously optimizes and adjusts the amplitude and the phase of each antenna unit port, positions and tracks a plurality of charged equipment, controls and forms a multi-beam directional diagram, ensures that microwave beams are always aligned to the plurality of charged equipment, and realizes effective and continuous charging of the plurality of mobile charged equipment.
Drawings
These and other features of the present invention will become more apparent upon further reading of the following specification and drawings.
The invention will now be described by way of example and with reference to the accompanying drawings in which:
fig. 1 is a schematic view of a wireless charging microwave power transmission system according to the present invention.
Fig. 2 is a functional block diagram of a multi-beam intelligent tracking circuit of the multi-beam tracking antenna of fig. 1.
Fig. 3 is a block diagram of a wireless charging receiver in the charged device of fig. 1.
In the figure: the intelligent multi-beam tracking antenna comprises an intelligent multi-beam tracking antenna 1, a charging signal transmitter 2, a charging signal transmitting antenna 3, a first charged device, a second charged device 5, a third charged device 6, an antenna array surface 7, a receiving channel 8, a transmitting channel 9, a digital processor 10, a transmitting antenna 11, a charging request signal transmitter 12, a receiving antenna 13 and a rectifier 14.
Detailed Description
See fig. 1 and 2. In the preferred embodiments described below, a wireless charging microwave power transmission system includes: the intelligent multi-beam tracking antenna 1 is arranged at a transmitting end, is used for positioning and tracking the charged equipment, and is provided with a charging signal transmitter 2 with a charging signal transmitting antenna 3, wherein the intelligent multi-beam tracking antenna 1 is arranged at a high position, and the charged equipment is arranged below. The intelligent multi-beam tracking antenna 1 adopts an array plane form of multi-feed point array, and selects a 5G network frequency band as a working frequency. The charging signal transmitter 2 of the transmitting end radiates a chargeable signal in a chargeable area through the transmitting antenna 3; after receiving the signal, the wireless charging receiver at the receiving end transmits a charging request signal through the transmitting antenna 11, and after receiving the charging request signal at the receiving end, the antenna array 7 transmits the charging request signal to the digital processor 10 through the receiving channel 8, establishes a communication link, and continuously updates and locates the position of the charged equipment. The charging signal transmitter 2 continuously transmits microwave wireless charging signals to a plurality of charged devices in a chargeable radiation area in a pulse form through the charging signal transmitting antenna 3; the charged device sends out a charging request signal, the intelligent multi-beam tracking antenna 1 periodically positions and tracks the charging request signal, searches the charging request signal position of the charged device, and based on the determined charging request signal position, the digital processor 10 calculates the amplitude and the phase required by the ports of each antenna unit corresponding to the transmitting channel 9 based on a multi-beam forming algorithm, so that the generated microwave beam is aligned to the charged device in the chargeable area, and the charged device receives microwaves and generates direct current through the wireless charging receiver.
See fig. 2. The multi-beam intelligent tracking circuit comprises a receiving channel 8 and a transmitting channel 9 which are connected with the antenna array surface 7 and the digital processor 10 in parallel. The digital processor 10 includes: the DOA positioning module carries out beam forming based on DOA direction of arrival information, positions the position of charged equipment, the DDS generates baseband signals, the multi-beam forming algorithm module calculates the optimal amplitude and phase of each antenna unit by utilizing the multi-beam forming algorithm and sends out control signals, and finally, the optimal amplitude and phase are generated at the ports of each antenna unit to realize digital beam forming. The multi-beam forming algorithm module in the digital processor 10 may use an adaptive beam forming algorithm, a genetic algorithm, a particle swarm algorithm, a neural network algorithm, or the like.
The receiving channel 8 comprises: the frequency synthesizer is used for amplifying signals received by the antenna array surface 7, filtering clutter signals through the filter, mixing the filtered signals through the mixer to generate radio frequency microwave signals, and converting the radio frequency microwave signals into direct current signals which are sent to the ADC through the mixer and converting the analog signals into digital signals. The signal processed by the receiving channel 8 is transmitted to the digital processor 10 for digital processing, processes the charging request signal of the charged equipment, controls the radiation power of the intelligent multi-beam tracking antenna 1 according to the power required by the charged equipment, and outputs the signal to the transmitting channel 9.
The transmitting channel 9 comprises a plurality of paths of digital-analog conversion DAC, mixers, filters, amplifiers and frequency synthesizers which are connected in sequence and are parallel among the plurality of paths of mixers, the transmitting channel 9 is positioned between the multi-beam forming algorithm module and the antenna array surface 7, microwave beams which are aligned to the charged equipment are effectively radiated through the antenna array surface 7, and the transmitting channel 9 has the function of the inverse process of the receiving channel 8.
See fig. 3. The wireless charging receiver in the illustrated charged device comprises two parts, one part being constituted by the transmitting antenna 11 and the charging request signal transmitter 12 and the other part being constituted by the receiving antenna 13 and the rectifier 14, wherein the direct current energy generated by the rectifier will be used for battery charging or direct power supply. When charging is needed, after the charged equipment receives a chargeable signal, the wireless charging receiver sends out a charging request signal through the transmitting antenna 11; the intelligent multi-beam tracking antenna 1 receives a charging request signal, the verification is passed, the received charging request signal is transmitted to a DOA positioning module in the digital processor 10 through the receiving channel 8, the position of the charging request signal is searched outwards, so that the position of the charged equipment is determined, and the charging request signal of the charged equipment is positioned and tracked periodically; the charging signal transmitter 2 of the transmitting end continuously generates a chargeable signal in the form of pulses and transmits the chargeable signal in a chargeable range through the charging signal transmitting antenna 3; the wireless charging receiver receives the chargeable signal through the transmitting antenna 11; the microwave energy irradiated thereon is intercepted by the receiving antenna 13 and the intercepted microwave power is transferred to the rectifier 14, and the rectifier 14 converts the microwave energy into direct current energy to charge the battery or directly supply power.
In the charging process, the charged equipment continuously sends a charging request signal in a pulse period of T1, the intelligent multi-beam tracking antenna 1 periodically tracks the position of the charging request signal of the charged equipment in a period of T2 which is not less than T1, when a plurality of mobile equipment enter a chargeable range, the positions of all the mobile equipment are positioned and tracked, and a multi-beam directional diagram aiming at all the charged equipment is generated through a multi-beam forming algorithm so as to realize the simultaneous charging of the plurality of mobile equipment.
While the foregoing is directed to the preferred embodiment of the present invention, it is noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the invention, and are also considered to be within the scope of the invention.
Claims (5)
1. A wireless charging microwave power transmission system, comprising: set up at the transmitting terminal, location, trace by the intelligent multibeam tracking antenna (1) of battery charging outfit, charge signal transmitter (2) with charge signal transmitting antenna (3), its characterized in that: the charging signal transmitter (2) continuously transmits microwave wireless charging signals to a plurality of charged devices in a chargeable radiation area in a pulse mode through the charging signal transmitting antenna (3); the charged equipment sends out a charging request signal, the intelligent multi-beam tracking antenna (1) periodically positions and tracks the charging request signal, searches the position of the charging request signal of the charged equipment, and according to the determined position of the charging request signal, the digital processor (10) calculates the amplitude and the phase required by each antenna unit port of the transmitting channel (9) based on a multi-beam forming algorithm so as to lead the generated microwave beam to be aligned with the charged equipment in the chargeable area, and the charged equipment receives microwaves and generates direct current through a wireless charging receiver;
the intelligent multi-beam tracking antenna (1) adopts a form of a multi-feed point array, the multi-feed points all select a 5G network frequency band as working frequency, and a transmitting end charging signal transmitter (2) radiates chargeable signals in a chargeable area through a transmitting antenna (3); after receiving the signal, the wireless charging receiver of the receiving end sends out a charging request signal through a transmitting antenna (11), and after receiving the charging request signal of the receiving end, an antenna array surface (7) transmits the charging request signal to a digital processor (10) through a receiving channel (8) to establish a communication link and continuously update and position the charged equipment;
the multi-beam intelligent tracking circuit comprises a receiving channel (8) and a transmitting channel (9) which are connected with an antenna array surface (7) and a digital processor (10) in parallel; the wireless charging receiver comprises two parts, one part is composed of a transmitting antenna (11) and a charging request signal transmitter (12), and the other part is composed of a receiving antenna (13) and a rectifier (14), wherein direct current energy generated by the rectifier is used for charging a battery or directly supplying power;
when charging is needed, the charged equipment sends out a charging request signal through a transmitting antenna (11) in the wireless charging receiver after receiving a chargeable signal; the intelligent multi-beam tracking antenna (1) receives a charging request signal, the verification is passed, the received charging request signal is transmitted to a DOA positioning module in the digital processor (10) through a receiving channel (8), the position of the charging request signal is searched outwards, so that the position of a charged device is determined, and the charging request signal of the charged device is positioned and tracked periodically; after the wireless charging signal enters the chargeable area, the transmitting antenna (11) receives the chargeable signal; the wireless charging receiver intercepts microwave energy irradiated on the wireless charging receiver through a receiving antenna (13), and transmits the intercepted microwave power to a rectifier (14), and the rectifier (14) converts the microwave energy into direct-current energy to charge a battery or directly supply power.
2. The wireless charging microwave power transmission system as claimed in claim 1, wherein: the digital processor (10) comprises: the DOA positioning module carries out beam forming based on DOA direction of arrival information, positions the position of charged equipment, the DDS generates baseband signals, the multi-beam forming algorithm module calculates the optimal amplitude and phase of each antenna unit and sends out control signals, and finally, the optimal amplitude and phase are generated at the ports of each antenna unit, so that digital beam forming is realized.
3. The wireless charging microwave power transmission system as claimed in claim 1, wherein: the receiving channel (8) comprises: the system comprises a plurality of paths of amplifiers, filters, mixers, an analog-digital converter ADC and a frequency synthesizer between the parallel multipath mixers which are sequentially connected, and a DOA positioning module for estimating the direction of arrival (DOA) through the common end connection of the multipath analog-digital converter ADC, wherein the multipath amplifiers amplify signals received by an antenna array surface (7), clutter signals are filtered out through the filters, the filtered signals are mixed by the mixers to generate radio frequency microwave signals, the frequency synthesizer converts the radio frequency microwave signals into direct current signals which are sent to the ADC through the mixers, the analog signals are converted into digital signals, the signals processed by a receiving channel (8) are transmitted to a digital processor (10) for digital processing, the charging request signals of charged equipment are processed, the radiation power of an intelligent multi-beam tracking antenna (1) is controlled according to the power required by the charged equipment, and the signals are output to a transmitting channel (9).
4. The wireless charging microwave power transmission system as claimed in claim 1, wherein: the transmitting channel (9) comprises a plurality of paths of digital-analog conversion DAC, mixers, filters, amplifiers and frequency synthesizers which are connected in sequence and are parallel among the plurality of paths of mixers, the transmitting channel (9) is positioned between the multi-beam forming algorithm module and the antenna array surface (7), microwave beams which aim at charged equipment are effectively radiated through the antenna array surface (7), and the transmitting channel (9) has the function of the inverse process of the receiving channel (8).
5. The wireless charging microwave power transmission system as claimed in claim 1, wherein: in the charging process, the charged equipment continuously sends a charging request signal in a pulse period of T1, the intelligent multi-beam tracking antenna (1) periodically tracks the position of the charging request signal of the charged equipment in a period of T2 which is not less than T1, when a plurality of mobile equipment enter a chargeable range, the positions of all the mobile equipment are positioned and tracked, and a multi-beam directional diagram aiming at all the charged equipment is generated through a multi-beam forming algorithm so as to realize the charging of the plurality of mobile equipment at the same time.
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| CN112152287B (en) * | 2020-09-10 | 2021-09-10 | 军事科学院系统工程研究院军事新能源技术研究所 | Remote charging method, device and system |
| CN114204698A (en) * | 2020-09-17 | 2022-03-18 | 华为数字能源技术有限公司 | Wireless charging method and wireless charging system |
| CN112165185B (en) * | 2020-09-22 | 2022-03-04 | 中国运载火箭技术研究院 | In-situ wireless energy supplementing system and method for wireless sensor network node of aircraft |
| CN114586259A (en) | 2020-09-29 | 2022-06-03 | 华为数字能源技术有限公司 | Wireless power supply device and wireless power supply terminal |
| CN113257046B (en) * | 2021-04-07 | 2023-05-09 | 顺德职业技术学院 | Power supply base for teaching equipment |
| CN113162181A (en) * | 2021-04-29 | 2021-07-23 | 四川虹美智能科技有限公司 | Wireless charging method and system, receiving device and charging device |
| CN114374279A (en) * | 2022-01-17 | 2022-04-19 | 维沃移动通信有限公司 | Wireless charging method and device and electronic equipment |
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