67 results about "Repeating coil" patented technology

The invention provides a multi-coil wireless energy transmission system, a design method, equipment and a storage medium. The multi-coil wireless energy transmission system comprises an inverter circuit, a rectifying circuit and a plurality of coils, the plurality of coils comprise a transmitting coil, a receiving coil and a plurality of repeating coils which are arranged according to optimized intervals and a preset sequence, the optimized intervals of two adjacent coils in the plurality of coils are different, and the interval of the two adjacent coils is determined based on an external load; the transmitting coil is connected with the inverter circuit, and the receiving coil is connected with the rectifier circuit. According to the multi-coil wireless energy transmission system, the multiple coils can be arranged according to the optimized intervals, the intervals of every two adjacent coils in the multiple coils are different after optimization, the transmission distance and efficiency of the multi-coil wireless energy transmission system under different loads can be improved, and the power supply problem of high-potential online monitoring equipment is effectively solved.

The invention provides a coupler offset monitoring and control method suitable for underwater wireless charging, and the method comprises the steps: designing the structure of a repeating coil according to a coupler, and determining that the current of the repeating coil can represent the mutual inductance coefficient change of the repeating coil and a secondary side coil; utilizing a BP neural network to obtain a resolving matrix of the coupler offset and the relay coil current; in the charging process, according to the collected current value, the offset direction and offset of the primary side coil and the secondary side coil are determined through a resolving matrix, a control mechanism of the primary side coil is controlled to be aligned with the secondary side coil, and therefore it is guaranteed that the coupler keeps accurate coupling. According to the relay coil, the coupling coefficient can be enhanced, the electromagnetic field transmission distance can be expanded, passive anti-offset can be achieved, current parameters in the array relay coil can serve as monitoring objects, offset and deflection detection can be achieved through coil array current sampling, active anti-offset is conducted, and the underwater wireless charging efficiency and stability are improved.

The invention belongs to the field of wireless electric energy transmission, and discloses a three-coil structure constant-current constant-voltage type wireless electric energy transmission system suitable for an office table, the system comprises an electric energy sending unit, a relay unit and a receiving unit, and the relay unit forms a series resonance network through a relay coil L2 and a relay series compensation capacitor C2; the receiving unit consists of a receiving coil L3, a receiving end compensation network, a rectifier D and a battery load R; the input end of the rectifier D is connected with the receiving coil L3, a constant current mode compensation capacitor C3CC and a constant voltage mode compensation capacitor C3CV which can be switched through a switch S are connected in series between the rectifier D and the receiving coil L3, and the output end of the rectifier is connected with a battery load R. The system can realize constant-current and constant-voltage output characteristics meeting battery charging requirements when the equivalent impedance of the battery is changed, and can ensure that the inverter realizes zero-phase-angle switching operation when the equivalent impedance of the battery is changed and the system is subjected to position offset.

The utility model discloses a double-coil wired series relay wireless power supply artificial urinary catheterization device, which comprises an energy sending module, an energy relay module and an energy receiving module, the energy sending module is independent of a human body, and the energy relay module and the energy receiving module are arranged in the human body; the energy transmitting module, the energy relay module and the energy receiving module are wirelessly connected through magnetic resonance coupling; the energy relay module comprises a first relay coil and a second relay coil which are connected in series through a wire. The energy receiving module comprises a receiving coil and an electromagnetic valve, the energy receiving module receives energy and opens the electromagnetic valve to conduct urination operation, wireless power supply can be conducted on the implanted device, and the operation of replacing a battery on the implanted device is omitted.

The present invention discloses a relay-type wireless power supply system for insulators and a method for optimizing coil parameters thereof. The system includes an insulator string, a transmitting coil, a relay coil, and a receiving coil. The insulator string includes a plurality of insulator discs. The transmitting coil is embedded outside the first insulator disc, the receiving coil is embedded outside the last insulator disc, and the relay coil is embedded outside the insulator discs in the middle part; The method includes: determining the coil diameter according to the diameter of the insulator disc and the firmness of the embedded coil; selecting the number of coil turns and the wire diameter according to the external insulation characteristics of the insulator string itself and the requirements of the coil quality factor; taking the minimum power supply requirement of the on-line monitoring equipment as the premise and the improvement of the transmission efficiency as the goal, optimizing the number of relay coils and the arrangement position of the coils. The present invention significantly improves the transmission power and transmission efficiency of the system, realizes the stable operation of the monitoring equipment of the transmission tower, is simple, effective and easy to implement, and has good economy and practicability.

This invention pertains to implantable medical device technology, specifically relating to a large-gap, offset-resistant wireless power and communication system for implantable medical devices. The system includes an external control module, an external relay module, and an implantable stimulation module. The external control module is used for energy transmission and communication control, while the implantable stimulation module is used for energy reception and information feedback. The external relay module is positioned between the two to improve the wireless power transmission distance and efficiency. The system achieves wireless power transmission through a multi-stage magnetic resonant coupling structure and incorporates a decoupling structure between the relay coils to reduce cross-coupling, ensuring stable transmission performance even under spatial offset conditions. An internal and external wireless communication link is established, integrating energy and information transmission, and closed-loop control is achieved by collecting status information from the energy storage unit. The system can achieve stable and efficient wireless power supply and reliable communication under conditions of large gaps and positional offsets.

The application relates to the technical field of wireless charging of electric vehicles, and particularly discloses a static wireless charging position adaptive control method and system for electric vehicles, wherein the control method comprises the following steps: acquiring the lateral offset distance of the electric vehicle; judging whether the lateral offset distance is smaller than a first preset distance; if yes, controlling the magnetic coupling mechanism to switch to a double-coil coupling mechanism; if not, controlling the magnetic coupling mechanism to switch to a three-coil coupling mechanism comprising a relay coil; the transmitting coil, the relay coil and the receiving coil all adopt annular planar coils, and the transmitting coil is located in the central blank area of the relay coil. The application combines the characteristics that the two-coil structure has high efficiency when the offset distance is short and the three-coil structure has high efficiency when the offset distance is long, adds a switchable relay coil in the coupling mechanism, and optimizes the radius of the relay coil, so that the system efficiency is always kept at a high level within the allowable range of the lateral offset distance.

The invention belongs to the technical field of wireless charging, and particularly relates to an in-vitro charging device of a wireless charging system and implantable medical equipment, the in-vitro charging device comprises an inverter, a transmitting coil and a repeating coil; wherein the inverter is electrically connected with the transmitting coil, so that the transmitting coil generates an induced magnetic field; the repeating coil is passively arranged and is respectively in resonance fit with the transmitting coil and a receiving coil of the in-vivo charging device so as to form a three-coil coupling structure; a relay coil is adjacent to the transmitting coil and overlaps with the transmitting coil. Through the fixed relay coil and closed-loop control, the dual advantages of offset resistance and eddy current suppression are achieved, the wireless charging system can automatically maintain constant output voltage within a certain offset range based on the closed-loop control, the relay coil always keeps a working state in the whole process, switching operation is not needed, and the wireless charging system is simple in structure and convenient to operate. The system is simple in structure, clear and reliable in control logic, and reliably adapts to harsh medical scenes.

The invention discloses a wireless electric energy transmission system with a constant-voltage and constant-current dual-port power supply function, relates to the field of wireless electric energy transmission, and aims to solve the problems that in the prior art, the number of components is large, the structure is complex, and the size is large. And the relay coil is integrated in the magnetic coupler by the receiving end, so that the relay coil also serves as a compensation coil. According to the wireless power transmission system, the number of components of the wireless power transmission system is greatly reduced, the overall size and weight are reduced, the cost and the circuit complexity are reduced, and light weight of the wireless power transmission system is facilitated. Furthermore, the coupling coil adopts a DD coil and a Q-type coil, the coil structure is simple, the two kinds of coils are arranged in sequence, natural decoupling can be achieved, the influence of cross coupling is eliminated, and the parameter design complexity is further reduced. And constant-current and constant-voltage output under the condition of zero phase angle can be realized.

An antenna apparatus and an electronic device. A relay coil is added near a main coil of the antenna apparatus, and a corresponding matching circuit is designed for the relay coil, to control a current direction of the relay coil to be the same as / opposite to a current direction of the main coil, so that magnetic fields generated by the main coil and the relay coil are superposed at a peer coil to achieve an effect of magnetic field enhancement. In addition, when the antenna apparatus is applied to an electronic device, if there is a metal assembly near the antenna apparatus in the electronic device, a current direction of the relay coil is the same as / opposite to a current direction of the main coil by designing a corresponding matching circuit, thereby improving performance of the antenna apparatus.

The invention relates to a cross-medium multi-frequency wireless power transmission system and a design method. Aiming at the existing defects of wireless electric energy transmission in some complex application scenes, the invention provides an electric energy transmission system with a multi-frequency characteristic, and the system realizes multi-frequency of a repeating coil and conversion and re-transmission of transmitted energy by adding the repeating coil and an AC-AC electric energy converter; by adding and designing a series-parallel impedance structure, frequency decoupling among all parts of a multi-frequency system is realized, crosstalk among system frequencies is prevented, magnetic induction type wireless electric energy transmission can cope with a more complex (multi-medium) transmission environment, the flexibility of the system is improved, and the reliability of the system is improved. Farther transmission distance, higher transmission efficiency and higher transmission power can be considered to a higher degree.

To provide a wireless power transfer system that when a coupling coefficient between power transmission / reception coils is varied by a position of a power reception coil being varied, can inhibit transfer efficiency between power transmission and reception from being reduced, by compensating for the coupling coefficient between the power transmission / reception coils.SOLUTION: There is provided a wireless power transfer system comprising a power transmission coil, a power reception coil, a relay coil unit, and a frequency adjustment unit. The wireless power transfer system is configured so that the power transmission coil uses electromagnetic force to perform power transmission to the power reception coil, the relay coil unit relays the power transmission from the power transmission coil to the power reception coil, and the frequency adjustment unit adjusts a resonance frequency of the relay coil unit depending on a distance between the power transmission coil and the power reception coil.SELECTED DRAWING: Figure 2

The invention provides a wireless charging system based on S-S-P compensation three-coil switching and a control method, and the system comprises a DC power supply, a full-bridge high-frequency inverter, a resonance stage, a full-bridge rectifier and a load, and is characterized in that the resonance stage comprises a transmitting coil, a repeating coil, a receiving coil and a corresponding compensation capacitor; the transmitting coil and the primary side compensation capacitor are connected to the output end of the high-frequency inverter in series, the receiving coil and the first secondary side compensation capacitor are connected to the input end of the full-bridge rectifier in parallel, and the first secondary side compensation capacitor is further connected with a second secondary side compensation capacitor with a first circuit breaker in parallel. The relay coil and the first relay compensation capacitor form a series resonance circuit, and the first relay compensation capacitor is also connected in parallel with a second relay compensation capacitor with a second cut-out switch; the device has the advantages that the device can operate in a CC mode and a CV mode, system operation is maintained under ZPA, a system compensation element does not contain a compensation inductor and is more portable, and meanwhile the alternating current switch is located on the receiving side and is convenient to control.

The present invention provides a method for expanding the wireless charging function based on a relay module, characterized in that the source module charges the load module through the relay module, and the function of the source module is expanded through the relay module, wherein: the relay module includes an auxiliary relay coil and at least one main relay coil, the relay module can extract sufficient power from the source module, and the extracted power is transmitted to all the main relay coils via a compensation network; the main relay coils are coupled with the coils of the load module to achieve wireless charging of the load module, and different types of main relay coils are selected to meet different charging functions. The present invention adopts different relay coil structures to realize the expansion of various charging functions. The experimental results show that the present invention can ensure the transmission power and efficiency in the full charging area, and takes into account issues such as charging offset tolerance, multi-load, combination of fast and slow charging, user experience, and economic cost.

The embodiment of the invention provides a wireless energy transmission system and a detection method of the wireless energy transmission system. The system comprises a transmitting end, a relay coil end and a receiving end, the transmitting end is used for acquiring energy from a high-voltage line and transmitting the energy to the repeating coil end, the repeating coil end is used for transmitting the energy, and the receiving end is used for receiving the energy and providing the energy to a load; the relay coil end comprises a plurality of relay coils, and each relay coil corresponds to a relay control module; the transmitting end comprises a transmitting control module; the relay control module is used for acquiring energy from the relay coil and converting the energy into power supply voltage of the relay control module, and is also used for acquiring first sensing data of the relay coil and sending the first sensing data to the emission control module; and the emission control module is used for reporting the first sensing data to a server. The method is used for achieving the effects of uninterruptedly detecting the relay coil and improving the operation and maintenance efficiency of the wireless energy transmission system.

The invention discloses a magnetic coupling wireless electric energy transmission device and system for a cascade type unmanned aerial vehicle set, and belongs to the technical field of unmanned aerial vehicle charging. The invention provides a magnetic coupling wireless power transmission device for a cascade unmanned aerial vehicle group, which comprises a transmitting assembly and a receiving assembly, and a relay assembly is arranged on a transmission line of the transmitting assembly and the receiving assembly. The transmitting assembly is arranged in the carrier, and the transmitting assembly comprises a transmitting coil; the receiving assembly is arranged at the receiving end of the unmanned aerial vehicle unit and comprises a receiving coil; the relay assembly is arranged on a transmission mother rod of the series unmanned aerial vehicle set and comprises a relay coil set. The transmitting assembly is coupled with the relay coil group of the relay assembly through the transmitting coil, and the relay coil group is coupled with the receiving coil. According to the invention, through mutual cooperation of the transmitting assembly, the receiving assembly and the relay assembly, wireless charging and information transmission can be simultaneously carried out on the cascade unmanned aerial vehicle group under the condition of avoiding electrical connection, and the unmanned aerial vehicle group is convenient to deploy.

The utility model discloses a magnetic coupling wireless electric energy transmission experiment device. The wireless power transmission experiment device is characterized by comprising an experiment base, a plurality of sliding rotating seats, receiving coils, transmitting coils, repeating coils and a wireless power transmission experiment instrument, wherein the sliding rotating seats are arranged on the experiment base in a sliding manner; the receiving coils and the transmitting coils are respectively arranged on the sliding rotating seats; the repeating coils are positioned between the receiving coils and the transmitting coils; according to the utility model, the relay coil is arranged between the receiving coil and the transmitting coil, so that the strength of electric signal transmission between the receiving coil and the transmitting coil is increased, and the wireless electric energy transmission distance between the receiving coil and the transmitting coil is increased; the sliding rotating seat can drive the receiving coil, the transmitting coil and the repeating coil to slide to adjust the distance and rotate to adjust the angles of the receiving coil, the transmitting coil and the repeating coil, so that the influence of the receiving coil, the transmitting coil and the repeating coil on the transmission strength of an electric signal can be conveniently tested by rotating different angles; therefore, the experiment range is expanded.

The invention discloses an induction heating system based on an adjustable impedance relay coil. The induction heating system comprises a power source module, a transmitting coil module, a relay coil module and an equivalent eddy current load, the power source module comprises an alternating current voltage source which is connected with the transmitting coil module; the transmitting coil module is formed by sequentially connecting a transmitting coil compensation capacitor, a transmitting coil internal resistor and a transmitting coil inductor in series; the relay coil module comprises a capacitor switching matrix, a relay coil inductor, a relay coil compensation capacitor and a relay coil internal resistor, wherein the relay coil inductor, the relay coil compensation capacitor and the relay coil internal resistor are sequentially connected in series. The capacitor switching matrix is connected with the relay coil compensation capacitor in parallel. The equivalent eddy current load comprises a load equivalent inductor and a load equivalent resistor which are connected in series; the transmitting coil module transmits energy to the repeating coil module through magnetic coupling; the repeating coil module transmits energy to the equivalent eddy current load through magnetic coupling; the surface of the equivalent eddy current load excites induced eddy current, and electric energy is converted into heat energy. The heating uniformity can be remarkably improved, and the power adjusting range can be widened.

The invention discloses a cooperative control circuit system of a wireless charging relay coil and a transmitting end, and belongs to the technical field of wireless charging. The cooperative control circuit system structurally comprises a direct current input module (1), a time sequence generation module (2), a step-up and step-down module (3), a transmitting coil module (4), a relay coil module (5), a receiving coil module (6), a cooperative control module (7) and a position control module (8). And the cooperative control module (7) outputs a control signal according to the acquired information, and drives a motor in the position control module (8) to drive the repeating coil to perform position adjustment, so that the repeating coil works at the optimal position. The problem that a traditional wireless charging system is short in transmission distance is effectively solved, the wireless transmission distance is expanded through the relay coil, the position of the relay coil is automatically adjusted according to the load, and the charging efficiency is optimized.

The invention provides a wireless electric energy transmission system added with a three-pole relay coil. The system comprises a power source module, an inversion module, a transmission coil module, a rectification module and a load. The power source module comprises an ideal voltage source; when the ideal voltage source is powered on, electric energy is converted into alternating current through the inversion module and input into a transmitting coil of the transmission coil module. In the transmission coil module, electric energy in a transmitting coil is transmitted to a receiving coil through a three-pole repeating coil, and meanwhile, part of electric energy is directly transmitted to the receiving coil from the transmitting coil; the alternating current of the receiving coil is converted into direct current through the rectifier module to supply power to a load. According to the invention, the leakage magnetic flux density of the charging area is reduced, so that considerable system transmission efficiency is ensured to be kept when the coil is subjected to plane dislocation, and a wireless power transmission system is enabled to have relatively high plane offset tolerance.

The present invention relates to an arbitrary constant voltage wireless power transmission compensation network and compensation method based on a relay coil. The arbitrary constant voltage wireless power transmission compensation network containing a relay coil includes a transmitting coil loop, a relay coil loop, and a receiving coil loop. The transmitting coil loop includes a voltage source, a transmitting coil, and a transmitting coil loop compensation capacitor connected in series. The relay coil loop includes a relay coil connected in series, a relay coil loop compensation capacitor, and the receiving coil loop includes a receiving coil, a receiving coil loop series compensation capacitor, a receiving coil loop parallel compensation capacitor, and a load. The present invention adds a parallel compensation capacitor on the basis of maintaining the original compensation network structure, and through the design of compensation parameters, the system obtains constant voltage output characteristics of different levels and effectively reduces the capacity of the inverter. Compared with the traditional three-coil structure, it is less likely to have detuning problems.

The invention provides an antenna device and electronic equipment. The relay coil is added near the main coil of the antenna device, and the corresponding matching circuit is designed for the relay coil to control the current direction of the relay coil to be the same as / opposite to the current direction of the main coil, so that the magnetic fields generated by the main coil and the relay coil are superposed at the coil at the opposite end to achieve the effect of magnetic field enhancement. Besides, when the antenna device is applied to the electronic equipment and a metal component exists near the antenna device in the electronic equipment, the current direction of the relay coil and the current direction of the main coil are enabled to be the same or opposite by designing a corresponding matching circuit, and correspondingly, the current of the metal component and the current of the main coil are enabled to be opposite or the same. Therefore, the magnetic fields generated by the main coil, the relay coil and the metal component are superposed at the opposite-end coil to achieve the effect of net magnetic field enhancement, so that the influence of the metal component on the shielding of the main coil is counteracted / reduced, and the performance of the antenna device is improved.

The present invention provides an adaptive control method and wireless charger for a long-distance wireless charging system based on a relay coil. When a relay coil exists in the wireless charging system and the distance between the relay coil and the transmitting coil is D1, by obtaining the fifth characteristic value Q5 of the transmitting coil in the standby state and comparing it with the second characteristic value Q2 when the distance between the relay coil and the transmitting coil is D1, it is possible to quickly pre-judge whether there is a relay coil in the wireless charging system, and then adjust the wireless charging transmitting end by calling the PING parameter under the condition of distance D1, and then judge whether the wireless charging transmitting end receives the charging request signal sent by the wireless charging receiving end, so as to accurately determine whether there is a relay coil in the wireless charging system and whether there is a receiving end on the relay coil. Therefore, in the case of long-distance charging across a table, it is possible to quickly respond to entering the wireless charging program to output energy without drilling a hole to damage the desktop.

The invention discloses a low-frequency RFID sample object identification system and method based on a relay coil, relates to the technical field of RFID identification, and can solve the technical problem of identification blind areas caused by limited magnetic field propagation range in the prior art. The system comprises a low-frequency RFID tag configured on a sample object to record unique identity information of the sample object; the repeating coil module is used for enhancing an alternating magnetic field in a recognition area, and the recognition area is used for storing a sample object; and the low-frequency RFID reader-writer module is used for transmitting a low-frequency alternating magnetic field to the identification area and receiving a signal returned by the low-frequency RFID tag so as to analyze the unique identity information of the sample object from the signal. According to the invention, the action range of the low-frequency magnetic field can be effectively enlarged, the identification capability of the reader-writer on the low-frequency tag in a relatively far area is improved, and the low-cost sample tracking requirements in complex environments such as high-density grids, multi-layer goods shelves and metal shielding are met.

The invention relates to a wireless power transmission system. The invention discloses a method and a system for measuring resonant frequency of a wireless energy transmission system. According to the method, scattering parameter data of the wireless energy transmission system in a certain frequency band are measured, scattering parameters are substituted into a calculation formula, the theoretical maximum energy transmission efficiency G of the wireless energy transmission system is obtained, and the frequency corresponding to the theoretical maximum energy transmission efficiency G is the resonant frequency of the wireless energy transmission system. The resonant frequency measuring system comprises a transmitting coil, a receiving coil, a repeating coil, a scattering parameter measuring instrument and a computer. The method solves the problems of large measurement error and complex measurement process of the resonant frequency of the wireless energy transmission system in the prior art, has the characteristics of simple and feasible calculation formula, reduced calculation difficulty and the like, and is very suitable for measuring the resonant frequency of various wireless energy transmission systems.

This invention discloses a long-distance parity-time symmetric wireless power transfer system with a multi-coil structure, belonging to the field of wireless power transfer technology. The invention includes a transmitting device, relay coil circuits, and a receiving device, with multiple sets of relay coil circuits arranged between the transmitting and receiving devices. Under the associated reference direction, the voltage and current flowing through the full-bridge inverter of the transmitting device are reversed, and together with the power supply, they are equivalent to a single negative resistance -R. N Resonant capacitor C 1s C 1p and resistance - R N The parallel connection, combined with inductor L1 in series, forms an SP structure. The resonant capacitor C of the receiving device... 5s C 5p and load R L The parallel connection, combined with inductor L5 in series, forms a PS structure. This invention not only enhances the energy transfer process but also reduces the critical coupling condition, allowing the system to operate more easily in the strong coupling region. Furthermore, the SP-PS topology further enhances the wide coupling characteristics of the PT system.

The invention provides a wireless power transmission system and a control method thereof. The wireless power transmission system comprises a plurality of active coils, a plurality of relay coils, a receiving coil and a control device. The relay coil comprises a relay coil body and a switched capacitor electrically connected with the relay coil body, and the switched capacitor comprises a capacitor and a switch assembly connected with the capacitor. The receiving coil moves between the upper part of the active coil and the upper part of the repeating coil, and is respectively coupled with the active coil or between the active coil and the repeating coil to form a transmission channel so as to transmit output power. The control device is electrically connected with the receiving coil and is used for acquiring the output power, determining the phase shift angle of the switch assembly according to the output power and controlling the switch assembly according to the phase shift angle of the switch assembly so as to adjust the output power. The detuning rate of the relay coil can be dynamically adjusted, and stable power transmission can be realized when the receiving coil moves under different load values or different coupling change ranges.

The invention relates to the technical field of power supply and communication of high-voltage transmission line on-load equipment, in particular to a wireless power supply and duplex communication coil with an embedded insulator. Comprising a high-voltage end embedded coil, a relay coil and a low-voltage end embedded coil which are embedded in an insulator, the problem of insulation between high-voltage equipment and low-voltage equipment is solved by coupling electric energy transmitting, relay and receiving coils, and stable electric power support is provided for on-line monitoring equipment on a high-voltage transmission line. In addition, the system adopts independent uplink and downlink data transmission paths, so that the stability of two-way communication is guaranteed. In uplink data transmission, monitoring data is sent to a low-voltage side from a high-voltage side, in downlink data transmission, a control instruction is sent to high-voltage side equipment, and the monitoring data and the downlink data do not interfere with each other. Through magnetic core arrangement and coil decoupling design, crosstalk of electric energy transmission on data transmission is effectively eliminated, the safety, the insulation performance and the environmental adaptability of the system are enhanced, and the system is suitable for online monitoring and management of the high-voltage transmission line.

The present invention provides a self-learning control method for a long-distance wireless charging system based on a relay coil and a wireless charger. By obtaining the characteristic value of the transmitting coil at a certain moment and comparing it with the characteristic value of the transmitting coil when there is a relay coil and a receiving end on the relay coil, the current state in the wireless charging system can be quickly predicted, and then the mapping data group where the weight value F Pj or F Vj is located is called in order from largest to smallest according to the value of the weight to configure the operating parameters of the transmitting coil, and it is determined whether the transmitting end receives a charging request signal sent by the receiving end. If so, the transmitting power of the transmitting coil is adjusted according to the requirements of the receiving end to charge the wireless charging receiving end. With such a setting, in the case of long-distance charging, when the wireless charging system applying this control method performs wireless charging again, it can respond quickly, enter the wireless charging program to output energy more quickly, and improve the charging response speed and user experience.