Remote wireless charging system

Abstract

The utility model discloses a remote wireless charging system. The system comprises a wireless power supply transmitting device, a wireless power supply receiving device and a Qi wireless charging transmitting device, the wireless power supply receiving device is connected with the Qi wireless charging transmitting device; when the wireless power supply transmitting device outputs a wireless power supply electromagnetic signal, the wireless power supply receiving device generates a wireless power supply voltage corresponding to charging power to the Qi wireless charging transmitting device; the wireless power supply transmitting device and the wireless power supply receiving device are respectively mounted at two ends of a preset non-metal substance of which the corresponding thickness meets a preset distance; the wireless power supply transmitting device outputs a wireless power supply electromagnetic signal to the wireless power supply receiving device; and the wireless power supply receiving device receives the wireless power supply electromagnetic signal and generates a wireless power supply voltage corresponding to the charging power required by the Qi wireless charging transmitting device. According to the invention, long-distance wireless charging at a certain distance is realized in a specific working surface area where a wire cannot be directly arranged, and the long-distance charging effect of the wireless charging device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wireless charging, and in particular to a long-distance wireless charging system. Background Art

[0002] As an emerging energy transmission method, wireless charging technology has been widely used in consumer electronics, electric vehicles, medical equipment and other fields in recent years. Traditional wireless charging technology is mainly based on the principle of electromagnetic induction, but its effective charging distance is usually limited to a few millimeters to a few centimeters, which greatly limits its application scenarios and convenience of use. At present, the wireless charging standards commonly used in the industry, such as the Qi standard, usually have an operating frequency in the range of 100-200kHz, and the charging distance generally does not exceed 8mm. Although this close-range charging method can meet the needs of small devices such as mobile phones, for some special application scenarios, work desks or special work equipment, it is impossible to perforate the charging cable or it is inconvenient to directly pull the wire to power the wireless charging device for aesthetics, so that the wireless charging devices in these wireless charging scenarios with a distance of tens of mm often cannot provide a good wireless charging experience. That is, when the existing wireless charging device is in a specific working surface area where the wire cannot be directly pulled, the charging effect of the wireless charging device is poor. Utility Model Content

[0003] The main purpose of the utility model is to provide a long-distance wireless charging system, which aims to solve the problem that when it is impossible to perforate the charging cable or it is inconvenient to directly pull the wire to power the wireless charging device in a specific work surface area for the sake of aesthetics, it can provide a desktop cable-free power supply method to improve the freedom of wireless charging and user experience.

[0004] To achieve the above-mentioned purpose, the long-distance wireless charging system proposed in the utility model includes a wireless power supply transmitting device, a wireless power supply receiving device and a Qi wireless charging transmitting device; the wireless power supply receiving device is connected to the Qi wireless charging transmitting device; the wireless power supply receiving device generates a wireless power supply voltage corresponding to the charging power to the Qi wireless charging transmitting device, and the wireless power supply transmitting device outputs a wireless power supply electromagnetic signal; the wireless power supply transmitting device and the wireless power supply receiving device are respectively installed at the two ends of a preset non-metallic material with a corresponding thickness that meets a preset air distance; the wireless power supply transmitting device outputs a wireless power supply electromagnetic signal to the wireless power supply receiving device; the wireless power supply receiving device receives the wireless power supply electromagnetic signal, and generates a wireless power supply voltage corresponding to the charging power required by the Qi wireless charging transmitting device.

[0005] In one embodiment of the utility model, the wireless power transmission device includes a wireless power transmission end circuit board, a first magnetic shielding device and a wireless power transmission coil; the wireless power transmission end circuit board, the first magnetic shielding device and the wireless power transmission coil are stacked in sequence from bottom to top; the first magnetic shielding device and the wireless power transmission coil constitute a wireless power transmission coil module; the wireless power transmission end circuit board is connected to the wireless power transmission coil separated by the first magnetic shielding device, the wireless power transmission end circuit board generates a wireless power electromagnetic signal, and the wireless power transmission coil generates a wireless power electromagnetic signal corresponding to the electromagnetic wave.

[0006] In one embodiment of the utility model, the wireless power transmission end circuit board includes a DC power supply, an inverter circuit module, a resonant compensation network module, a power input detection module, a power control module, a resonant output detection module, a power transmission main control module and a power transmission communication module; the inverter circuit is respectively connected to the DC power supply, the resonant compensation network module and the power control module; the power transmission main control module is respectively connected to the power input detection module, the power control module, the resonant output detection module and the power transmission communication module; the resonant compensation network module is connected to the wireless power transmission coil.

[0007] In one embodiment of the utility model, the wireless power receiving device includes a wireless power receiving coil, a second magnetic shielding device and a corresponding wireless power receiving circuit in the wireless power receiving end and the Qi wireless charging transmitting end circuit board; the wireless power receiving coil, the second magnetic shielding device and the wireless power receiving end and the Qi wireless charging transmitting end circuit board are stacked from bottom to top in sequence; the wireless power receiving coil and the second magnetic shielding device constitute a wireless power receiving coil module; the wireless power receiving coil is connected to the corresponding wireless power receiving circuit in the wireless power receiving end and the wireless charging transmitting end circuit board separated by the second magnetic shielding device, the wireless power receiving coil receives a wireless power electromagnetic signal, and the corresponding wireless power receiving circuit in the wireless power receiving end and the Qi wireless charging transmitting end circuit board outputs a wireless power voltage corresponding to the charging power.

[0008] In one embodiment of the utility model, the corresponding wireless power supply receiving circuit in the wireless power supply receiving end and the wireless charging transmitting end circuit board includes a resonant input detection module, a modulation load module, a rectifier filter module, a DC conversion module, a communication modulation module, an output voltage and current detection module, a power supply receiving main control module and a power supply receiving communication module; the resonant input detection module is respectively connected to the modulation load module, the rectifier filter module and the wireless power supply receiving coil; the DC conversion module is respectively connected to the rectifier filter module, the output voltage and current detection module and the Qi wireless charging transmitting device; the rectifier filter module is respectively connected to the modulation load module and the output voltage and current detection module; the power supply receiving main control module is respectively connected to the modulation load module, the output voltage and current detection module and the power supply receiving communication module; the communication modulation module is connected to the modulation load module.

[0009] In one embodiment of the utility model, the Qi wireless charging transmitting device includes a third magnetic shielding device, a Qi wireless charging transmitting coil and a wireless power receiving end and a corresponding wireless charging transmitting circuit in the Qi wireless charging transmitting end circuit board; the wireless power receiving end and the Qi wireless charging transmitting end circuit board, the third magnetic shielding device and the Qi wireless charging transmitting coil are stacked in sequence from bottom to top; the Qi wireless charging transmitting coil and the third magnetic shielding device constitute a Qi wireless charger transmitting coil module; the Qi wireless charging transmitting coil is connected to the corresponding wireless charging transmitting circuit in the wireless power receiving end and the Qi wireless charging transmitting end circuit board, and the corresponding wireless charging transmitting circuit in the wireless power receiving end and the Qi wireless charging transmitting end circuit board is connected to the DC conversion module in the wireless power receiving device, and the wireless power supply device generates a power supply voltage corresponding to the power required by the Qi wireless charging transmitting device, and outputs a wireless power electromagnetic signal through the wireless power supply transmitting device.

[0010] In an embodiment of the present invention, the long-distance wireless charging system further includes a wired charging interface module, and the wired charging interface module is connected to the DC conversion module.

[0011] In one embodiment of the utility model, the power transmission communication module is wirelessly connected to the power reception communication module; when the power transmission communication module receives a power reception feedback signal, it outputs the power reception feedback signal to the power transmission main control module; when the power reception communication module receives a power transmission feedback signal, it outputs the power transmission feedback signal to the power reception main control module.

[0012] In an embodiment of the present utility model, the wireless power transmitting coil includes at least one group of wireless power transmitting coils; the Qi wireless charging transmitting coil includes at least one group of wireless charging transmitting coils.

[0013] The long-distance wireless charging system in the technical solution of the utility model includes a wireless power supply transmitting device, a wireless power supply receiving device and a Qi wireless charging transmitting device; the wireless power supply receiving device is connected to the Qi wireless charging transmitting device; when the wireless power supply transmitting device outputs a wireless power supply electromagnetic signal (i.e., a wireless power supply electromagnetic signal), the wireless power supply receiving device generates a wireless power supply voltage corresponding to the charging power to the Qi wireless charging transmitting device; the wireless power supply transmitting device and the wireless power supply receiving device are respectively installed at the two ends of a preset non-metallic material with a corresponding thickness that meets a preset air distance; the wireless power supply transmitting device outputs a wireless power supply electromagnetic signal to the wireless power supply receiving device; the wireless power supply receiving device receives the wireless power supply electromagnetic signal, and generates a wireless power supply voltage corresponding to the charging power required by the Qi wireless charging transmitting device. The present application realizes wireless charging in a specific working surface area where a wire cannot be directly arranged and separated by a certain air distance, thereby improving the long-distance charging effect of the wireless charging device.

[0014] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by practicing the utility model. The purpose and other advantages of the utility model are realized and obtained by the structures specifically pointed out in the description, claims and drawings.

[0015] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the composition structure of the long-distance wireless charging system in the embodiment of the utility model;

[0018] Figure 2 This is another schematic diagram of the composition structure of the long-distance wireless charging system in the embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of the circuit structure corresponding to the long-distance wireless charging system in the embodiment of the utility model;

[0020] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0023] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0024] The utility model proposes a long-distance wireless charging system, please refer to Figure 1 Schematic diagram of the composition structure of the long-distance wireless charging system. Figure 3 Schematic diagram of the circuit structure corresponding to the long-distance wireless charging system. The first embodiment of the long-distance wireless charging system of the present application embodiment includes:

[0025] In this embodiment, the long-distance wireless charging system includes a wireless power supply transmitting device 1, a wireless power supply receiving device 2 (wherein the wireless power supply receiving device 2 includes a wireless power supply receiving end and a corresponding wireless power supply receiving circuit in a Qi wireless charging transmitting end circuit board and a corresponding wireless charging transmitting circuit in a wireless power supply receiving end and a Qi wireless charging transmitting end circuit board) and a Qi wireless charging transmitting device 3; the wireless power supply receiving device 2 is connected to the Qi wireless charging transmitting device 3; when the wireless power supply transmitting device 1 outputs a wireless power supply electromagnetic signal, the corresponding wireless power supply receiving circuit in the wireless power supply receiving end and the Qi wireless charging transmitting end circuit board in the wireless power supply receiving device 2 generates a wireless power supply voltage corresponding to the charging power to the corresponding wireless charging transmitting circuit in the wireless power supply receiving end and the Qi wireless charging transmitting end circuit board, and the wireless power supply receiving device 2 transmits the wireless power supply voltage to the corresponding wireless power supply transmitting circuit in the wireless power supply receiving end and the Qi wireless charging transmitting end circuit board through the Qi wireless charging The transmitting device 3 outputs a corresponding wireless charging electromagnetic signal; the wireless power transmitting device 1 and the wireless power receiving device 2 are respectively installed at the two ends of a preset non-metallic material with a corresponding thickness that meets a preset air distance (wherein the non-metallic material here can be: air, wood, marble, glass, plastic... and other non-metallic materials) (for example: the wireless power transmitting device 1 and the wireless power receiving device 2 can be fixedly installed on the desktop and the back of the table using 3M glue, and the wireless power receiving device 2 can also be movably placed on the desktop according to the magnetic induction range of the wireless power transmitting device 1 (the transmitting end adopts a multi-coil method).); the wireless power transmitting device outputs a wireless power electromagnetic signal to the wireless power receiving device 2; the wireless power receiving device 2 receives the wireless power electromagnetic signal, and generates a wireless power voltage corresponding to the charging power required by the Qi wireless charging transmitting device. Among them, the wireless power receiving device 2 and the Qi wireless charging transmitting device 3 can be an integral whole (when the two are taken as a whole, the circuit boards between the wireless power receiving device 2 and the Qi wireless charging transmitting device 3 are combined and arranged in the wireless power receiving end and the Qi wireless charging transmitting end circuit board), or they can be a detachable whole (when the two are separated into a whole, the wireless power receiving end and the Qi wireless charging transmitting end circuit board will also be divided into a wireless power receiving end circuit board 231 and a Qi wireless charging transmitting end circuit board 232, such as Figure 2 As shown), the two can be connected by means such as wired or contact magnetic attraction (not limited to this), and the Qi wireless charging transmitter 3 can be more conveniently replaced with other devices that need to be powered (such as laptops, desk lamps, mobile phones without wireless charging function, etc.), and the application is wider. In addition, the air distance between the wireless power transmitting device 1 and the wireless power receiving device 2 can be adjusted according to the actual needs of the desktop panel or other material board, and is approximately between 15mm and 50mm in actual application scenarios. The wireless power receiving device 2 and the Qi wireless charging transmitting device 3 can be composed of a wireless power receiving device and a Qi wireless charging transmitting device module 4.

[0026] The wireless power transmission device 1 includes a wireless power transmission end circuit board 11, a first magnetic shielding device 12 and a wireless power transmission coil 13; the wireless power transmission end circuit board 11, the first magnetic shielding device 12 and the wireless power transmission coil 13 are stacked from bottom to top in sequence to form the wireless power transmission device 1; the first magnetic shielding device 12 and the wireless power transmission coil 13 form a wireless power transmission coil module; the wireless power transmission end circuit board 11 is connected to the wireless power transmission coil 13 separated by the first magnetic shielding device 12, the wireless power transmission end circuit board 11 generates a wireless power electromagnetic signal, and the wireless power transmission coil 13 generates a wireless power electromagnetic signal corresponding to the electromagnetic wave.

[0027] The wireless power transmission end circuit board 11 includes a DC power supply 111, an inverter circuit module 112, a resonant compensation network module 113, a power input detection module 114, a power control module 115, a resonant output detection module 116, a power transmission main control module 117 and a power transmission communication module 118; the inverter circuit module 112 is respectively connected to the DC power supply 111, the resonant compensation network module 113 and the power control module 115; the power transmission main control module 117 is respectively connected to the power input detection module 114, the power control module 115, the resonant output detection module 116 and the power transmission communication module 118; the resonant compensation network module 116 is connected to the wireless power transmission coil 13.

[0028] The wireless power receiving device 2 includes a wireless power receiving coil 21, a second magnetic shielding device 22 and a corresponding wireless power receiving circuit in the wireless power receiving end and the Qi wireless charging transmitting end circuit board 23; the wireless power receiving coil 21, the second magnetic shielding device 22 and the wireless power receiving end and the wireless charging transmitting end circuit board 23 are stacked in sequence from bottom to top; the wireless power receiving coil 21 and the second magnetic shielding device 22 constitute a wireless power receiving coil module; the wireless power receiving coil 21 is connected to the corresponding wireless power receiving circuit in the wireless power receiving end and the Qi wireless charging transmitting end circuit board 23 separated by the second magnetic shielding device 22, the wireless power receiving coil 21 receives a wireless power electromagnetic signal, and the corresponding wireless power receiving circuit in the wireless power receiving end and the Qi wireless charging transmitting end circuit board 23 converts the wireless power electromagnetic signal and outputs a wireless power voltage corresponding to the charging power.

[0029] The corresponding wireless power receiving circuit in the wireless power receiving end and the Qi wireless charging transmitting end circuit board 23 includes a resonant input detection module 231, a modulation load module 232, a rectifier and filter module 233, a DC conversion module 234, a communication modulation module 235, an output voltage and current detection module 236, a power receiving main control module 237 and a power receiving communication module 238; the resonant input detection module 231 is respectively connected to the modulation load module 232, the rectifier and filter module 233 and the wireless power receiving coil 21; the DC conversion module 234 is respectively connected to the rectifier and filter module 233, the output voltage and current detection module 236 and the Qi wireless charging transmitting device 3; the rectifier and filter module 233 is respectively connected to the modulation load module 232 and the output voltage and current detection module 236; the power receiving main control module 237 is respectively connected to the modulation load module 232, the output voltage and current detection module 236 and the power receiving communication module 238; the communication modulation module 235 is connected to the modulation load module 232.

[0030] The Qi wireless charging transmitting device 3 includes a third magnetic shielding device 31, a Qi wireless charging transmitting coil 32, and a wireless power receiving end and a corresponding wireless charging transmitting circuit in the Qi wireless charging transmitting end circuit board 23; the third magnetic shielding device 31 and the Qi wireless charging transmitting coil 32 are stacked from bottom to top in sequence; the Qi wireless charging transmitting coil and the third magnetic shielding device constitute a Qi wireless charger transmitting coil module; the Qi wireless charging transmitting coil 32 is connected to the wireless power receiving end and the corresponding wireless charging transmitting circuit in the Qi wireless charging transmitting end circuit board 23; the wireless power receiving end and the corresponding wireless charging transmitting circuit in the Qi wireless charging transmitting end circuit board 23 are connected to the DC conversion module 32 in the wireless power receiving device; the wireless power receiving end and the corresponding wireless charging transmitting circuit in the Qi wireless charging transmitting end circuit board 23 generate a wireless charging electromagnetic signal corresponding to the charging power when receiving the wireless power supply voltage and transmit it through the Qi wireless charging transmitting coil 32. Among them, the Qi wireless charging device is a Qi-certified wireless charger that can perform wireless charging for electrical appliances such as wireless charging.

[0031] The long-distance wireless charging system also includes a wired charging interface module 5 to simultaneously power the Qi wireless charging transmitter device and other Type C power-consuming devices (not limited to the Type C interface), and the wired charging interface module 33 is connected to the DC conversion module 234.

[0032] The power transmission communication module 118 is connected to the power receiving communication module 238; when the power transmission communication module 118 receives the power receiving feedback signal, it outputs the power receiving feedback signal to the power transmission main control module 238; when the power receiving communication module 238 receives the power transmission feedback signal, it outputs the power transmission feedback signal to the power receiving main control module 118. Among them, the communication between the power transmission communication module 118 and the power receiving communication module 238 can use wireless 2.4G, Bluetooth, Zigbee and other wireless communication methods to improve the communication rate and make the communication dynamic performance better.

[0033] The wireless power transmission coil 13 includes at least one group of wireless power transmission coils; the Qi wireless charging transmission coil 32 includes at least one group of wireless charging transmission coils. The utility model can use multiple groups of coils to improve the freedom of charging, making charging more convenient and free. In addition, the wireless power transmission coil module and the wireless power transmission end circuit board 11, the wireless power receiving coil module and the wireless power receiving end and the wireless charging transmission end circuit board 23 and the Qi wireless charging transmitting device 3 can also be stacked or laid flat as needed.

[0034] In practical applications, the first multidimensional parameter data of the first electromagnetic induction between the wireless power transmitting device and the wireless power receiving device 2 are collected, and the second multidimensional parameter data of the second electromagnetic induction between the Qi wireless charging transmitting device 3 and the target device are collected. The power transmission main control module 117 is used to suppress the power frequency interference and harmonic noise filtering of the electrical parameters in the first multidimensional parameter data and the power receiving main control module 237 are used to suppress the power frequency interference and harmonic noise filtering of the electrical parameters in the second multidimensional parameter data to obtain the denoised electrical parameter data, and the temperature data in the first multidimensional parameter data and the second multidimensional parameter data are subjected to the empirical mode decomposition of the wireless charging temperature to obtain the multi-scale denoised temperature data. temperature data, and perform independent component analysis on the multidimensional environmental electromagnetic parameters in the first multidimensional parameter data and the second multidimensional parameter data to obtain a blind source separation result; construct a state vector for the electrical parameter data, the temperature data and the blind source separation result to obtain an initial fusion state vector, and perform Kalman filtering on the electrical parameter data, the temperature data and the blind source separation result based on the initial fusion state vector and preset historical sensor data to obtain system parameter data after compensating for system delay and measurement error; perform Hilbert-Huang transform analysis on the system parameter data to obtain the first multidimensional parameter data after preprocessing of the instantaneous frequency characteristics and the second multidimensional parameter data after preprocessing.

[0035] Then, the local space and time characteristics of the time-varying electromagnetic field in the preprocessed first multidimensional parameter data and the preprocessed second multidimensional parameter data are extracted respectively to obtain the space-time coupling characteristics, the long-term and short-term dynamic characteristics in the preprocessed first multidimensional parameter data and the preprocessed second multidimensional parameter data are captured, the multi-source electrical parameter data in the preprocessed first multidimensional parameter data and the preprocessed second multidimensional parameter data are subjected to nonlinear dimensionality reduction to obtain low-dimensional potential probability characteristics, and the instantaneous power spectral density and the instantaneous power spectral density of the two electromagnetic inductions in the preprocessed first multidimensional parameter data and the preprocessed second multidimensional parameter data are calculated. The power flow direction is obtained to obtain the electromagnetic induction characteristics that describe the energy transmission efficiency and directionality, and the double charging process data in the preprocessed first multidimensional parameter data and the preprocessed second multidimensional parameter data are subjected to continuous wavelet transform to obtain the abnormal detection characteristics of transient electromagnetic anomalies and harmonic mutations; a high-dimensional feature matrix corresponding to the spatiotemporal coupling characteristics, long-term and short-term dynamic characteristics, low-dimensional potential probability characteristics, electromagnetic induction characteristics and abnormal detection characteristics is constructed to obtain the initial comprehensive feature set, and the mutual information between each feature of the initial comprehensive feature set and the preset target charging parameters is calculated to obtain the initial feature importance ranking; based on The initial features are sorted by importance, and the initial comprehensive feature set is subjected to iterative feature selection and redundancy analysis to obtain a high-dimensional feature vector of the optimized dual electromagnetic charging state; the preset dynamic wireless circuit model is used to estimate the equivalent target charging parameters of the high-dimensional feature vector to obtain the equivalent estimation results of the two electromagnetic inductions, and based on the equivalent estimation results, the energy loss value caused by the nonlinear hysteresis loss and skin effect corresponding to the long-distance wireless charging system is calculated to obtain the power loss estimation result; based on the power loss estimation result, the nonlinear mapping relationship between the transmitting power and the receiving power of the two electromagnetic inductions in the long-distance wireless charging system is calculated, and based on the nonlinear mapping relationship, the charging efficiency of the long-distance wireless charging system at different wireless air distances is predicted to obtain the trend prediction result; based on the equivalent estimation results and the trend prediction results, the nonlinear distortion and distortion evaluation results of the intermodulation products of the long-distance wireless charging system at different wireless air distances are evaluated, and the equivalent estimation results, power loss estimation results, nonlinear mapping relationship, trend prediction results and distortion evaluation results are numerically calculated in the finite difference time domain to obtain the parameter estimation results of the two electromagnetic induction distribution simulations at different wireless air distances.

[0036] Then, based on the parameter estimation results, an optimization objective function of the charging performance of two electromagnetic inductions at different air distances is constructed, and the optimization objective function is subjected to non-dominated sorting genetic multi-objective optimization to obtain the optimal solution set of wireless charging that adapts to different air distances; a preset adaptive simulated annealing algorithm is used to perform a local search for the charging energy state change of the optimal solution set of wireless charging, and an optimal dual charging strategy that meets multiple constraints is obtained; based on the optimal dual charging strategy, an optimal dual charging control strategy for a long-distance wireless charging system in a preset wireless air distance interval is generated by adaptive dynamic programming, and a charging control instruction sequence for a long-distance wireless air is generated based on the optimal dual charging control strategy; the initial charging result includes a first initial charging result, a second initial charging result and a third initial charging result, and the dual charging parameters include wireless power supply parameters, DC conversion parameters and wireless charging parameters; based on the charging control instruction sequence, a first wireless control instruction for the wireless power supply transmitting module, a DC conversion control instruction for the wireless power supply receiving module and a second wireless control instruction for the Qi wireless charging transmitting device are generated at the current air distance respectively; based on the first wireless control instruction, based on the first wireless control According to the control instruction, the wireless power transmission module adjusts the preset initial power provided by the DC power supply 111 to perform the DC conversion of the inverter circuit module 112, the wireless resonance of the resonance compensation network module 113, and the wireless power parameters of the wireless power electromagnetic signal corresponding to the power transmission power provided to the power supply transmission main control module 117 based on the power input detection module 114, the power control module 115, and the resonance output detection module 116, so as to obtain the first initial charging result; based on the DC conversion control instruction, the Qi wireless charging transmitting device is adjusted to perform the wireless resonance of the resonance input detection module 231, the rectification of the rectification and filtering module 233, the DC conversion of the DC conversion module 234, and the modulation of the load module 232, the communication modulation module 235, and the output voltage and current detection module 236 on the received wireless power supply to generate the DC conversion parameters of the wireless power supply voltage corresponding to the power reception power control, so as to obtain the second initial charging result; and based on the second wireless control instruction, the Qi wireless charging transmitting device is adjusted to generate the wireless charging parameters of the wireless charging electromagnetic signal corresponding to the wireless charging electromagnetic signal, so as to obtain the third initial charging result. Power receiving communication module 238, power transmitting communication module 118

[0037] Then, the wireless charging feedback data of the initial charging result is obtained by using the power receiving communication module 238 and the power transmitting communication module 118 (wherein, these wireless feedback data generally include key parameters such as actual charging efficiency, power transmission loss, temperature change, and electromagnetic field intensity distribution), and based on the obtained feedback data and the preset wireless air distance (the wireless air distance here refers to the air distance between the wireless power transmitting module and the wireless power receiving module in the long-distance wireless charging system (such as between 15mm and 50mm)), the transmission power and frequency of the two electromagnetic inductions are dynamically adjusted, that is, using adaptive particle swarm optimization or genetic algorithm, etc., to quickly search for the optimal solution in the multi-dimensional parameter space, while taking into account the nonlinear characteristics and multiple constraints of the system, and in the adjustment process, it is necessary to balance multiple goals such as charging efficiency, energy loss, and safety to find an optimal compromise point (for example, at a longer air distance, it may be necessary to increase the transmission power to ensure sufficient energy transmission, but at the same time, the power must be controlled within a safe range to avoid overheating or electromagnetic interference. Frequency adjustment needs to consider the resonance of the system Characteristics, to ensure that the best energy transmission state can be maintained at different distances), thereby obtaining dynamic parameter adjustment results; then based on these results, the inductance and capacitance values ​​of the impedance matching network in the long-distance wireless charging system are dynamically adjusted, that is, a high-speed digital signal processor or field programmable gate array is used for real-time calculation and control, and during the adjustment process, the current impedance matching state is continuously calculated, and the network parameters are fine-tuned by controlling the variable capacitor or variable inductor until the best matching point is reached to maintain the best power transmission state, thereby significantly improving the adaptability of the system at different distances, ensuring that the two electromagnetic induction systems always maintain the best transmission efficiency state; then based on real-time optimization of transmission efficiency, the phase-locked loop technology is used for fast and accurate frequency tracking to adjust the best resonance state and charging output power of the long-distance wireless charging system in different wireless air distance intervals, and at the same time, the charging output power is adjusted considering the charging needs of the receiving device and the current battery status (for example, in the early stage of battery charging, a large charging power may need to be provided, while in the later stage of charging, the power needs to be gradually reduced to protect the battery). This dynamic power adjustment can not only improve the charging efficiency, but also extend the battery life, and ultimately generate the final wireless charging result of the long-distance wireless charging system. This result reflects the optimal performance of the system at a given air distance, including key indicators such as charging efficiency, power transmission, and charging time. It can maintain efficient charging performance at all times within a preset wide air distance range in specific working surface areas where direct wiring cannot be arranged, and whose specific working surface thickness is within a specific working surface area.

[0038] That is, by respectively collecting multi-dimensional parameter data between the power supply transmitting module and the wireless power supply receiving module and between the wireless power supply receiving module and the target device, and pre-processing the multi-dimensional parameter data, multi-modal fusion and feature extraction are performed on the processed multi-dimensional parameter data to obtain a high-dimensional feature vector under the dual electromagnetic charging state, and then the high-dimensional feature vector is simulated and estimated for two-layer wireless charging of multiple electromagnetic induction parameters to obtain parameter estimation results of two electromagnetic inductions, and then the parameter estimation results are adjusted for the two-layer long-distance wireless charging parameters, so that after obtaining the wireless charging feedback data corresponding to the initial charging result in real time, the relevant wireless charging parameters are adjusted according to the current long-distance wireless charging effect to obtain the final wireless charging result, and finally realize the long-distance wireless charging in the specific working surface area where the wire cannot be directly arranged, and improve the effect of the two-layer long-distance wireless charging in the specific working surface area.

[0039] In this embodiment, the long-distance wireless charging system includes a wireless power transmitting device, a wireless power receiving device and a Qi wireless charging transmitting device; the wireless power receiving device is connected to the Qi wireless charging transmitting device; when the wireless power transmitting device outputs a wireless power electromagnetic signal, the wireless power receiving device generates a wireless power voltage corresponding to the charging power required by the Qi wireless charging transmitting device to the Qi wireless charging transmitting device; the wireless power transmitting device and the wireless power receiving device are respectively installed at the two ends of a preset non-metallic material with a corresponding thickness that meets a preset air distance; the wireless power transmitting device outputs a wireless power electromagnetic signal to the wireless power receiving device; the wireless power receiving device receives the wireless power electromagnetic signal, and generates a wireless power voltage corresponding to the charging power. The present application realizes wireless charging in a specific working surface area where the wire cannot be directly arranged and is separated by a certain air distance, thereby improving the long-distance charging effect of the wireless charging device.

[0040] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A long-distance wireless charging system, characterized in that: The long-distance wireless charging system includes a wireless power transmitting device, a wireless power receiving device and a Qi wireless charging transmitting device; The wireless power receiving device is connected to the Qi wireless charging transmitting device; the wireless power receiving device generates a wireless power supply voltage corresponding to the charging power to the Qi wireless charging transmitting device, and the wireless power transmitting device outputs a wireless power supply electromagnetic signal; The wireless power transmitting device and the wireless power receiving device are respectively installed at two ends of a preset non-metallic material with a corresponding thickness satisfying a preset air distance; the wireless power transmitting device outputs a wireless power electromagnetic signal to the wireless power receiving device; The wireless power receiving device receives the wireless power electromagnetic signal and generates a wireless power voltage corresponding to the charging power required by the Qi wireless charging transmitting device.

2. The long-distance wireless charging system according to claim 1, characterized in that: The wireless power transmission device comprises a wireless power transmission end circuit board, a first magnetic shielding device and a wireless power transmission coil; the wireless power transmission end circuit board, the first magnetic shielding device and the wireless power transmission coil are stacked from bottom to top in sequence to form the wireless power transmission device; The first magnetic shielding device and the wireless power transmitting coil form a wireless power transmitting coil module; The wireless power transmitting end circuit board is connected to the wireless power transmitting coil via the first magnetic shielding device, the wireless power transmitting end circuit board generates a wireless power electromagnetic signal, and the wireless power transmitting coil generates a wireless power electromagnetic signal corresponding to the electromagnetic wave.

3. The long-distance wireless charging system according to claim 2, characterized in that: The wireless power transmission end circuit board includes a DC power supply, an inverter circuit module, a resonance compensation network module, a power input detection module, a power control module, a resonance output detection module, a power transmission main control module and a power transmission communication module; The inverter circuit module is respectively connected to the DC power supply, the resonant compensation network module and the power control module; The power supply transmission main control module is connected to the power input detection module, the power control module, the resonance output detection module and the power supply transmission communication module respectively; The resonance compensation network module is connected to the wireless power transmitting coil.

4. The long-distance wireless charging system according to claim 3, characterized in that: The wireless power receiving device includes a wireless power receiving coil, a second magnetic shielding device, and a wireless power receiving end and a corresponding wireless power receiving circuit in a Qi wireless charging transmitting end circuit board; the wireless power receiving coil, the second magnetic shielding device, the wireless power receiving end, and the Qi wireless charging transmitting end circuit board are stacked from bottom to top in sequence; The wireless power receiving coil and the second magnetic shielding device constitute a wireless power receiving coil module; The wireless power receiving coil is connected to the corresponding wireless power receiving circuit in the wireless power receiving end and the Qi wireless charging transmitting end circuit board through the second magnetic shielding device. The wireless power receiving coil receives the wireless power electromagnetic signal, and the corresponding wireless power receiving circuit in the wireless power receiving end and the Qi wireless charging transmitting end circuit board outputs a wireless power voltage corresponding to the charging power.

5. The long-distance wireless charging system according to claim 4, characterized in that: The corresponding wireless power receiving circuit in the wireless power receiving end and the Qi wireless charging transmitting end circuit board includes a resonant input detection module, a modulation load module, a rectifier filter module, a DC conversion module, a communication modulation module, an output voltage and current detection module, a power receiving main control module and a power receiving communication module; The resonant input detection module is respectively connected to the modulation load module, the rectification and filtering module and the wireless power receiving coil; The DC conversion module is respectively connected to the rectification and filtering module, the output voltage and current detection module and the Qi wireless charging transmitter; The rectification and filtering module is respectively connected to the modulation load module and the output voltage and current detection module; The power supply receiving main control module is respectively connected to the modulation load module, the output voltage and current detection module and the power supply receiving communication module; The communication modulation module is connected to the modulation load module.

6. The long-distance wireless charging system according to claim 5, characterized in that: The Qi wireless charging transmitting device includes a third magnetic shielding device, a Qi wireless charging transmitting coil, a wireless power receiving end, and a corresponding wireless charging transmitting circuit in a Qi wireless charging transmitting end circuit board; the wireless power receiving end and the corresponding wireless charging transmitting circuit in a wireless charging transmitting end circuit board, the third magnetic shielding device, and the Qi wireless charging transmitting coil are stacked from bottom to top in sequence; The Qi wireless charging transmitting coil and the third magnetic shielding device constitute a Qi wireless charger transmitting coil module; The Qi wireless charging transmitting coil is connected to the corresponding wireless charging transmitting circuit in the wireless power receiving end and the Qi wireless charging transmitting end circuit board. The corresponding wireless charging transmitting circuit in the wireless power receiving end and the Qi wireless charging transmitting end circuit board is connected to the DC conversion module in the wireless power receiving device. The wireless power supply device generates a power supply voltage corresponding to the power required by the Qi wireless charging transmitting device, and outputs a wireless power supply electromagnetic signal through the wireless power transmitting device.

7. The long-distance wireless charging system according to claim 6, characterized in that: The long-distance wireless charging system also includes a wired charging interface module, and the wired charging interface module is connected to the DC conversion module.

8. The long-distance wireless charging system according to claim 5, characterized in that: The power transmission communication module is wirelessly connected to the power reception communication module; when the power transmission communication module receives a power reception feedback signal, it outputs the power reception feedback signal to the power transmission main control module; when the power reception communication module receives a power transmission feedback signal, it outputs the power transmission feedback signal to the power reception main control module.

9. The long-distance wireless charging system according to claim 6, characterized in that: The wireless power transmission coil includes at least one group of wireless power transmission coils; the Qi wireless charging transmission coil includes at least one group of wireless charging transmission coils.

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