Wireless charging node based on optical fiber energy transmission

Abstract

According to the wireless charging node based on optical fiber energy transmission, the influence of the external environment on the energy supply cable can be overcome by using the optical fiber as the function, the optical energy transmission loss can be reduced by arranging the high-power-resistant coating in the optical fiber cable, and the optical fiber is wrapped by the aramid fiber or the carbon fiber, so that the energy transmission loss is reduced. Lightweight and cable strength improvement can be realized. The wireless charging node is made of a shell based on a nylon material, so that the wireless charging node is light in weight and avoids interference on wireless energy supply. And at the transmitting end, the transmitting end microcontroller is used for controlling the operation parameters of each component to realize power matching of the transmitting end and the receiving end, so that the influence of the external environment and the equipment operation state on wireless power supply is reduced, and the wireless power supply efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of optical fiber energy supply technology, and in particular to a wireless charging node based on optical fiber energy transmission. Background Art

[0002] Wireless power transmission is based on electromagnetic induction, which is very susceptible to external interference, including the metal parts of the device itself, which can also affect power transmission. Existing technologies mostly use metal wires for power transmission, which results in a lot of losses, and lack active adjustment of power supply parameters during the wireless power supply process. It will not actively overcome the external environment to achieve power matching between the power transmitter and the receiver, reduce losses, and improve power transmission efficiency. Therefore, a new wireless charging node is urgently needed. Summary of the invention

[0003] In view of this, an embodiment of the present invention provides a wireless charging node based on optical fiber energy transmission to eliminate or improve one or more defects existing in the prior art and overcome the influence of external electromagnetic interference on the wireless power supply process.

[0004] One aspect of the present invention provides a wireless charging node based on optical fiber energy transmission, comprising:

[0005] The transmitting terminal node is deployed on the optical fiber cable according to a preset position, and the optical fiber cable has at least one low-bend-sensitive optical fiber embedded therein; the front end of the optical fiber cable is connected to a laser to generate and introduce multiple laser beams of set wavelengths; the transmitting terminal node includes:

[0006] The first shell is made of nylon material and has a nested structure of a first set shape;

[0007] A photocell, disposed in the first housing, the photocell being connected to the optical fiber in the optical fiber cable;

[0008] A transmitting end microcontroller is arranged in the first housing and connected to the photocell, and is used to change the duty cycle by pulse width modulation or control the power supply of the photocell by buck-boosting; the transmitting end microcontroller is also provided with a first short-range communication module; the transmitting end microcontroller performs power matching based on a control model pre-trained by reinforcement learning; an oscillating circuit is connected to the transmitting end microcontroller, and is used to convert a first direct current into a first alternating current;

[0009] a power amplifier circuit, connected to the oscillation circuit to amplify the first alternating current;

[0010] A transmitting end coil, used to be connected to the power amplifier circuit, and to convert the first alternating current after power amplification into an alternating magnetic field for energy supply;

[0011] The receiving terminal nodes are deployed one-to-one with the transmitting terminal nodes, including:

[0012] The second housing is made of nylon material and has a nested structure of a second set shape, wherein the second set shape corresponds to and fits with the first set shape to form a detachable associated structure;

[0013] A receiving end coil, used for inducing the alternating magnetic field emitted by the transmitting end coil and generating a second alternating current;

[0014] A rectifier circuit, used for converting the second alternating current into a second direct current;

[0015] A receiving end microcontroller is used to collect the power parameters of the second direct current; the receiving end microcontroller is also provided with a second short-range communication module for sending the power parameters to the first short-range communication module, so as to be forwarded to the transmitting end microcontroller to adjust the power supply power according to the power parameters for power matching;

[0016] A power supply interface is connected to the receiving end microcontroller to provide power to an external load.

[0017] In some embodiments, the laser includes: a laser diode for generating a laser beam with a wavelength of 808 nm and / or 1550 nm;

[0018] An erbium-doped laser amplifier, used to amplify the power of the laser beam generated by the laser diode and introduce it into the optical fiber in the optical fiber cable;

[0019] A wavelength division multiplexer, used for combining or separating the laser beams of each set wavelength;

[0020] An optical fiber collimator is used to guide the laser beam into the optical fiber.

[0021] In some embodiments, the first short-range communication module and the second short-range communication module adopt a Bluetooth module, a StarFlash module, a Wifi module or a ZigBee short-range communication module.

[0022] In some embodiments, the transmitting end microcontroller is further provided with a phase-locked loop for tracking and adjusting the oscillation frequency of the oscillation circuit, and feeding back to the transmitting end microcontroller for adjustment.

[0023] In some embodiments, the optical fiber is made of quartz glass material and is provided with at least one layer of high-power resistant coating on the outside; the outside of the optical fiber is wrapped and packaged by aramid fiber or carbon fiber; the high-power resistant coating is a fluorocarbon coating or a polyimide coating; the fluorocarbon coating is a silicon carbide coating; the optical fiber cable is also provided with a metal armor layer, and the metal armor layer is woven by metal wire; Teflon material is used for filling and isolation between the optical fibers.

[0024] In some embodiments, a magnet is set on the first shell according to a first set position, and a magnet is set on the second shell according to a second set position. The first set position corresponds to the second set position, and the relative position of the first shell and the second shell is maintained by magnetic attraction to ensure that the transmitting end coil is aligned with the receiving end coil.

[0025] In some embodiments, the transmitting terminal node further comprises:

[0026] A power storage device connected to the photocell to store power, wherein the power storage device is a battery pack;

[0027] The battery management system is arranged in the sending end microcontroller and manages the charging and discharging of the power storage device and the photovoltaic cell.

[0028] In some embodiments, the rectification circuit adopts a multi-stage rectification structure based on silicon carbon-based rectifiers.

[0029] In some embodiments, the transmitting terminal node and the receiving terminal node are further provided with a temperature sensor and an overload protector, respectively.

[0030] In some embodiments, the transmitting end microcontroller is loaded with a control model pre-trained based on reinforcement learning. The control model takes the power state parameters of the photocell, the oscillation circuit, the power amplifier circuit, the transmitting end coil, the receiving end coil, the rectifier circuit and the external load as input, and outputs corresponding control actions to control the working parameters of the photocell, the oscillation circuit, the power amplifier circuit and the rectifier circuit to achieve power matching between the transmitting end and the receiving end.

[0031] The beneficial effects of the present invention include at least:

[0032] The wireless charging node based on optical fiber energy transmission described in the present invention utilizes optical fiber to perform functions, and can overcome the influence of the external environment on the power supply cable. By setting a high-power resistant coating in the optical fiber cable, the light energy transmission loss can be reduced. By wrapping the optical fiber with aramid fiber or carbon fiber, it can achieve lightweight and improved cable strength. The wireless charging node is made of nylon material to make the shell, which is lightweight and eliminates interference with wireless power supply. At the transmitting end, the transmitting end microcontroller is used to control the operating parameters of each component to achieve power matching between the transmitting end and the receiving end, reduce the influence of the external environment and the operating status of the equipment on the wireless power supply, and improve the efficiency of wireless power supply.

[0033] Additional advantages, purposes, and features of the present invention will be described in part in the following description, and will become apparent to those skilled in the art after studying the following, or may be learned from the practice of the present invention. The purposes and other advantages of the present invention may be achieved and obtained by the structures specifically indicated in the specification and the accompanying drawings.

[0034] Those skilled in the art will appreciate that the objectives and advantages that can be achieved with the present invention are not limited to the above specific description, and the above and other objectives that can be achieved by the present invention will be more clearly understood from the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The drawings described herein are used to provide a further understanding of the present invention, constitute a part of this application, and do not constitute a limitation of the present invention. The components in the drawings are not drawn to scale, but are only for illustrating the principles of the present invention. In order to facilitate the illustration and description of some parts of the present invention, the corresponding parts in the drawings may be enlarged, that is, they may become larger relative to other components in the exemplary device actually manufactured according to the present invention. In the drawings:

[0036] Figure 1 The figure is a schematic diagram of the structure of a wireless charging node based on optical fiber energy transmission according to an embodiment of the present invention.

[0037] Figure 2 This is a schematic diagram of the spatial structure of a wireless charging node based on optical fiber energy transmission according to an embodiment of the present invention.

[0038] Reference numerals:

[0039] 100: Transmitter terminal node; 101: Photocell; 102: Transmitter microcontroller;

[0040] 103: oscillator circuit; 104: power amplifier circuit; 105: transmitter coil;

[0041] 106: first short-range communication module; 200: receiving terminal node; 201: receiving end coil;

[0042] 202: rectifier circuit; 203: receiving end microcontroller; 204: power supply interface;

[0043] 205: second short-range communication module; 300: optical fiber cable; 400: laser. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments and the accompanying drawings. Here, the illustrative embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention.

[0045] It should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the solutions according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0046] It should be emphasized that the term “include / comprises” when used herein refers to the presence of features, elements, steps or components, but does not exclude the presence or addition of one or more other features, elements, steps or components.

[0047] It should also be noted that, unless otherwise specified, the term “connection” herein may refer not only to a direct connection but also to an indirect connection involving an intermediate.

[0048] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the accompanying drawings, the same reference numerals represent the same or similar components, or the same or similar steps.

[0049] Traditional wireless energy transmission systems usually use metal materials as the main construction materials for wires and power supply nodes, which are prone to electromagnetic interference and limit the deployment range of nodes. At the same time, due to the high density of metal materials, the weight of the nodes is also large, which is not convenient to carry and move. In the process of wireless power supply, the prior art lacks active intervention in external and internal interference factors, and cannot efficiently achieve power matching between the transmitter and the receiver. Therefore, the present invention proposes a solution for a metal-free wireless charging lightweight node based on optical fiber energy transmission, which can reduce electromagnetic interference while making the entire cable small in size and lightweight, and easy to deploy and use.

[0050] Specifically, the present invention provides a wireless charging node based on optical fiber energy transmission, such as Figure 1 and Figure 2 As shown, it includes: a transmitting terminal node 100 and a receiving terminal node 200 .

[0051] The transmitting terminal node 100 is deployed on the optical fiber cable 300 according to a preset position, and the optical fiber cable 300 has at least one low bend-sensitive optical fiber embedded therein. Low bend-sensitive optical fiber (Bend-Insensitive Fiber, BIF) is a kind of optical fiber specially designed to maintain low loss under a small bending radius, and is widely used in indoor wiring, data centers, high-density distribution frames and other scenarios. Single-mode low bend-sensitive optical fiber, such as ITU-T G.657 series, can be used.

[0052] The optical fiber is made of quartz glass material and has at least one layer of high-power resistant coating on the outside. The high-temperature resistant coating is used to improve the stability of the optical fiber in high-power transmission. The high-power resistant coating is a fluorocarbon coating or a polyimide coating; the fluorocarbon coating is a silicon carbide coating.

[0053] The outside of the optical fiber is wrapped and packaged by aramid fiber or carbon fiber; the front end of the optical fiber cable 300 is connected to a laser 400 to generate and introduce multiple laser beams of set wavelengths.

[0054] A metal armor layer is also provided inside the optical fiber cable 300 to enhance the mechanical strength. The metal armor layer is woven by metal wires. Teflon material is used to fill and isolate the optical fibers.

[0055] In some embodiments, the laser 400 includes: a laser diode, an erbium-doped laser amplifier, a wavelength division multiplexer, and a fiber collimator.

[0056] The laser diode is used to generate a laser beam with a wavelength of 808nm and / or 1550nm. The erbium-doped laser amplifier is used to amplify the power of the laser beam generated by the laser diode and introduce it into the optical fiber in the optical fiber cable 300. The wavelength division multiplexer is used to merge or separate laser beams of each set wavelength. The optical fiber collimator is used to introduce the laser beam into the optical fiber.

[0057] The transmitting terminal node 100 includes: a first housing, a photovoltaic cell 101 , a transmitting end microcontroller 102 , an oscillating circuit 103 , a power amplifying circuit 104 and a transmitting end coil 105 .

[0058] The first shell is made of nylon material to form a nested structure of a first set shape. Nylon (Nylon), chemically known as polyamide (Polyamide, PA), is a type of polymer material connected by repeated amide bonds (-CONH-). It is generated by a polycondensation reaction of a diamine and a dibasic acid, or by ring-opening polymerization of cyclohexane lactam.

[0059] The photovoltaic cell 101 is disposed in the first housing and is connected to the optical fiber in the optical fiber cable 300. The photovoltaic cell 101 is a device that directly converts light energy into electrical energy. When the laser beam irradiates the semiconductor material, the photons excite electrons to transition from the valence band to the conduction band, forming electron-hole pairs. These carriers are separated under the action of the built-in electric field to generate current.

[0060] The transmitting end microcontroller 102 is arranged in the first shell and connected to the photocell 101, and is used to change the duty cycle through pulse width modulation or control the power supply power of the photocell 101 through voltage reduction or voltage increase; the transmitting end microcontroller 102 is also provided with a first short-range communication module 106; the transmitting end microcontroller 102 performs power matching based on a control model pre-trained by reinforcement learning.

[0061] Among them, the transmitting end microcontroller 102 establishes communication with the receiving end through the first short-range communication module 106, and dynamically adjusts the energy supply parameters according to the returned voltage, current, power or temperature information, increases or decreases the transmitting end power, and changes the frequency or modulation parameters to optimize the transmission efficiency.

[0062] The oscillation circuit 103 is connected to the transmitting end microcontroller 102, and is used to convert the first direct current into the first alternating current. In this wireless energy supply scheme, the oscillation circuit 103 is usually implemented by an LC oscillation circuit 103, a crystal oscillation circuit 103 or a multivibrator circuit 103. Its core principle is to use the positive feedback mechanism in the circuit to continuously convert the DC input signal into an alternating signal. In terms of specific structure, the LC oscillation circuit 103 can generate an AC signal at a specific frequency through the resonant characteristics of the inductor and the capacitor. If higher stability is required, a crystal oscillator can be used, which uses the piezoelectric effect of the quartz crystal to provide a high-precision oscillation signal. In addition, the transmitting end microcontroller 102 inputs a trigger signal or adjusts the parameters to the oscillation circuit 103 through a PWM signal or other digital control methods to achieve frequency and waveform control. These designs ensure that the output AC signal has suitable frequency, amplitude and waveform characteristics, providing a stable and efficient input source for subsequent power amplification and wireless energy supply.

[0063] The power amplifier circuit 104 is connected to the oscillation circuit 103 to amplify the first alternating current; the common structures of the power amplifier circuit 104 include a class A amplifier circuit, a class B amplifier circuit, a class AB amplifier circuit and a class D amplifier circuit. Among them, the class A amplifier circuit has the advantages of high linearity and low signal distortion, but low efficiency, and is suitable for low power demand scenarios; the class B amplifier circuit shares the positive and negative half-cycle signals through two complementary transistors, with high efficiency, but prone to crossover distortion; the class AB amplifier circuit combines the advantages of class A and class B, taking into account both linearity and efficiency, and is one of the more commonly used structures; the class D amplifier circuit is a high-efficiency switching amplifier, which uses pulse width modulation (PWM) or pulse amplitude modulation (PAM) to control the rapid switching of transistors, with extremely low power loss, and is particularly suitable for high-power wireless energy transmission systems.

[0064] The transmitting end coil 105 is used to connect to the power amplifier circuit 104 to convert the first alternating current after power amplification into an alternating magnetic field for energy supply. Common coil shapes include round, square and spiral. The round and spiral structures are more suitable for long-distance energy supply, while the square is more suitable for compact design, using low-resistance conductors (such as high-purity copper wires), and the surface may be silver-plated to reduce high-frequency current loss (skin effect).

[0065] The receiving terminal node 200 is arranged in one-to-one correspondence with the transmitting terminal node 100 , and includes: a second housing, a receiving end coil 201 , a rectifier circuit 202 , a receiving end microcontroller 203 and a power supply interface 204 .

[0066] The second shell is made of nylon material and has a nested structure of a second set shape. The second set shape corresponds to the first set shape and fits with each other to form a detachable associated structure. Corresponding to the first shell, an injection molding package can be used to ensure stability. The shapes of the first shell and the second shell are complementary to form a detachable nested structure, providing possibilities for diversified applications. In some embodiments, a magnet is set on the first shell according to a first set position, and a magnet is set on the second shell according to a second set position. The first set position corresponds to the second set position. The relative position of the first shell and the second shell is maintained by magnetic attraction to ensure that the transmitting end coil 105 is aligned with the receiving end coil 201.

[0067] The receiving end coil 201 is used to induce the alternating magnetic field emitted by the transmitting end coil 105 and generate a second alternating current. Its shape is consistent with that of the transmitting end coil 105.

[0068] The rectifier circuit 202 is used to convert the second alternating current into a second direct current. The rectifier circuit 202 is used to convert alternating current into direct current, and common structures include half-wave rectification, full-wave rectification, bridge rectification, active rectification and resonant rectification. Half-wave rectification is simple, but inefficient; full-wave rectification uses two diodes or a center-tapped transformer to improve efficiency, but the structure is complex; bridge rectification uses four diodes to form a bridge structure, and the output is stable and does not require a special transformer; active rectification reduces power loss through switching devices such as MOSFET, which is suitable for low-voltage and high-efficiency applications; resonant rectification combines resonant circuits to improve efficiency and stability, and is suitable for high-frequency wireless power supply. In combination with filters (such as capacitors, inductors or LC filters), the output can be further smoothed to meet the needs of different scenarios.

[0069] In some embodiments, the rectifier circuit 202 adopts a multi-stage rectifier structure based on a silicon-carbon-based rectifier. The multi-stage rectifier structure based on a silicon-carbon-based rectifier is a high-efficiency rectifier design, which is particularly suitable for high-frequency and high-power wireless energy supply scenarios. The structure uses a rectifier device made of silicon-carbon (SiC) material, which has a higher voltage resistance, a lower forward voltage drop and a faster switching speed, and can significantly reduce energy loss in high-frequency operation. The multi-stage rectifier structure achieves a higher output voltage or current capability by combining multiple rectifier stages in series or in parallel, while reducing the thermal load of a single-stage circuit. Typically, the first stage uses a bridge rectifier to convert the positive and negative half-cycles of the alternating current into the same-direction direct current; then a resonant rectifier or a voltage doubler rectifier module is added to improve the rectification efficiency through a resonant circuit, or to increase the output voltage through a voltage doubler network of capacitors and diodes. After each stage of rectification, an LC filter network can be added to smooth the output and reduce harmonic interference. In addition, the multi-stage rectifier circuit 202 can also be combined with active rectification technology, using SiC MOSFET or SBD (Schottky barrier diode) to dynamically adjust the rectification path to further reduce power consumption. Due to the high thermal conductivity of SiC materials, the rectifier can withstand higher power density and is suitable for long-distance transmission or high-power devices in wireless power supply.

[0070] The receiving end microcontroller 203 is used to collect the power parameters of the second direct current; the receiving end microcontroller 203 is also provided with a second short-range communication module 205 for sending the power parameters to the first short-range communication module 106, so as to be forwarded to the transmitting end microcontroller 102 to adjust the power supply power according to the power parameters for power matching.

[0071] The power supply interface 204 is connected to the receiving end microcontroller 203 to provide power to an external load.

[0072] In some embodiments, the first short-range communication module 106 and the second short-range communication module 205 are implemented by Bluetooth modules, StarFlash modules, Wifi modules or ZigBee short-range communication modules.

[0073] In some embodiments, the transmitting end microcontroller 102 is also provided with a phase-locked loop for tracking and adjusting the oscillation frequency of the oscillation circuit 103, and feeding back to the transmitting end microcontroller 102 for adjustment. The phase-locked loop (PLL) is used in the transmitting end microcontroller 102 to track and adjust the oscillation frequency of the oscillation circuit 103. Its working principle is to collect the output signal of the oscillation circuit 103 and compare the phase with the reference signal (such as the frequency signal fed back by the receiving end or the preset frequency standard). The compared phase difference outputs the control voltage through the phase comparator, and after smoothing by the low-pass filter, adjusts the output frequency of the voltage-controlled oscillator (VCO) to gradually approach the frequency of the reference signal. When the phase difference is stable at zero or within the allowable range, the frequency of the oscillation circuit 103 is locked to the reference frequency. The microcontroller monitors the state of the PLL in real time through the digital interface, and adjusts the reference frequency or the phase-locked loop parameters to adapt to external interference or load changes. In wireless energy supply, this real-time frequency locking can ensure that the transmitting end and the receiving end maintain good coupling efficiency. By cooperating with the short-range communication module at the receiving end, the phase-locked loop can dynamically adjust the oscillation frequency according to the feedback signal from the receiving end, optimize the stability and efficiency of energy transmission, and is suitable for high-frequency, high-efficiency wireless power supply application scenarios.

[0074] In some embodiments, the transmitting terminal node 100 also includes: a power storage device connected to the photovoltaic cell 101 for power storage, the power storage device is a battery pack; a battery management system is set in the transmitting end microcontroller to manage the charging and discharging of the power storage device and the photovoltaic cell 101.

[0075] In some embodiments, the transmitting terminal node 100 and the receiving terminal node 200 are further provided with a temperature sensor and an overload protector, respectively.

[0076] In some embodiments, the transmitting end microcontroller 102 is loaded with a control model pre-trained based on reinforcement learning. The control model takes the power state parameters of the photocell 101, the oscillation circuit 103, the power amplifier circuit 104, the transmitting end coil 105, the receiving end coil 201, the rectifier circuit 202 and the external load as input, and outputs corresponding control actions to control the working parameters of the photocell 101, the oscillation circuit 103, the power amplifier circuit 104 and the rectifier circuit 202 to achieve power matching between the transmitting end and the receiving end.

[0077] The training process of the control model based on reinforcement learning aims to optimize the power matching between the transmitter and the receiver in the wireless energy supply system, improve the transmission efficiency and system stability. The model is pre-trained using the reinforcement learning (RL) algorithm, and achieves optimal control of complex dynamic systems through environmental interaction and reward mechanisms. The following is a description of the specific training process and its working mechanism:

[0078] 1. Control the model training process

[0079] 1.1 Parameter collection and environment construction:

[0080] For training purposes, a simulation environment for the entire wireless energy supply system needs to be established, covering the dynamic behavior model of the photovoltaic cell, oscillation circuit, power amplifier circuit, transmitting coil, receiving coil, rectifier circuit, and load.

[0081] Input parameters can include: photovoltaic cell output power, current and voltage. Oscillator circuit operating frequency, output waveform quality and phase. Power amplifier circuit gain, output power and voltage. Transmitter coil coupling coefficient and transmission efficiency. Receiver coil induced voltage, rectifier output voltage and load change. System state parameters will be dynamically updated in real-time simulation to reflect the impact of different operating conditions (such as load changes, distance fluctuations, interference conditions).

[0082] 1.2 Action Space Design:

[0083] The actions of the control model include: regulating the output power of the photovoltaic cell (through duty cycle adjustment). Dynamically adjusting the operating frequency of the oscillator circuit to match the resonant frequency of the receiver. Controlling the gain of the power amplifier circuit to match the requirements of the receiver. Adjusting the operating mode of the rectifier circuit (such as switching the rectifier device or filter parameters).

[0084] 1.3 Reward function definition:

[0085] The reward function is used to guide the model to optimize the objectives, including: maximizing the load power at the receiving end, minimizing the power loss at the transmitting and receiving ends, ensuring the stability of power transmission and reducing fluctuations, and avoiding system overload or abnormal operation.

[0086] 1.4 Reinforcement learning algorithm selection and training:

[0087] Using a deep reinforcement learning algorithm (such as DQN, DDPG or PPO), the expected return of a state-action pair is evaluated through a policy network and a value network. During training, the model is initialized with random parameters, collects states from the environment, performs actions, and records rewards and next states. The network weights are continuously updated so that the model gradually converges to the optimal strategy.

[0088] 2. Working mechanism after training

[0089] 2.1 Real-time status monitoring:

[0090] The microcontroller at the transmitting end collects system status parameters (such as voltage, current, frequency, power, etc.) and inputs them into the pre-trained control model to obtain real-time decisions. At the same time, the receiving end feeds back its power status parameters, such as rectified voltage, output power, load changes, etc., which are transmitted to the transmitting end through the short-range communication module.

[0091] 2.2 Dynamic decision-making and control:

[0092] The control model outputs control actions in real time based on the input parameters. For example: adjust the power supply of the photovoltaic cell to meet the power requirements of the transmitter. Adjust the frequency of the oscillation circuit to ensure resonance matching with the receiving coil. Dynamically adjust the gain of the power amplifier circuit to avoid energy waste caused by over-amplification. Improve the working state of the rectifier circuit and optimize the stability of the output DC power. The model can adapt to changes in the external environment (such as fluctuations in coil spacing, changes in load current, etc.) and continuously optimize the energy supply efficiency.

[0093] 2.3 Feedback optimization:

[0094] The control model records the environmental status and control results in actual operation, continuously accumulates data, and further optimizes the decision-making quality through online learning or regular updating of reinforcement learning strategies.

[0095] Through this reinforcement learning control model, the transmitter and receiver can achieve dynamic power matching, significantly improving transmission efficiency and system stability. Compared with traditional fixed control strategies, the model can adapt to complex environmental changes, such as load fluctuations or changes in transmission distance, making the wireless energy supply system more efficient, intelligent and reliable in practical applications.

[0096] In summary, the wireless charging node based on optical fiber energy transmission described in the present invention utilizes optical fiber to perform functions, can overcome the influence of the external environment on the power supply cable, and can reduce the light energy transmission loss by setting a high-power resistant coating in the optical fiber cable. By wrapping the optical fiber with aramid fiber or carbon fiber, it can achieve lightweight and improved cable strength. The wireless charging node is made of nylon material to make the shell, which eliminates interference with wireless power supply while reducing the weight. At the transmitting end, the transmitting end microcontroller is used to control the operating parameters of each component to achieve power matching between the transmitting end and the receiving end, reduce the influence of the external environment and the operating status of the equipment on the wireless power supply, and improve the efficiency of wireless power supply.

[0097] It should be understood by those skilled in the art that the exemplary components, systems and methods described in conjunction with the embodiments disclosed herein can be implemented in hardware, software or a combination of the two. Whether it is performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention. When implemented in hardware, it can be, for example, an electronic circuit, an application specific integrated circuit (ASIC), appropriate firmware, a plug-in, a function card, etc. When implemented in software, the elements of the present invention are programs or code segments used to perform the required tasks. The program or code segment can be stored in a machine-readable medium, or transmitted on a transmission medium or a communication link via a data signal carried in a carrier.

[0098] It should be clear that the present invention is not limited to the specific configuration and processing described above and shown in the figures. For the sake of simplicity, a detailed description of the known method is omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present invention is not limited to the specific steps described and shown, and those skilled in the art can make various changes, modifications and additions, or change the order between the steps after understanding the spirit of the present invention.

[0099] In the present invention, features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, and / or combined with features of other embodiments or replace features of other embodiments.

[0100] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the embodiments of the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A wireless charging node based on optical fiber energy transmission, characterized in that: include: A transmitting terminal node is deployed at a preset position on an optical fiber cable, wherein the optical fiber cable has at least one low bend-sensitive optical fiber embedded therein; The front end of the optical fiber cable is connected to a laser to generate and introduce a plurality of laser beams of set wavelengths; The transmitting terminal node is prepared by an integrated process, including: The first shell is made of nylon material and has a nested structure of a first set shape; A photocell, disposed in the first housing, the photocell being connected to the optical fiber in the optical fiber cable; A transmitting end microcontroller is arranged in the first housing and connected to the photocell, and is used to change the duty cycle by pulse width modulation or control the power supply of the photocell by bucking or boosting; the transmitting end microcontroller is also provided with a first short-range communication module; the transmitting end microcontroller performs power matching based on a control model pre-trained by reinforcement learning; An oscillating circuit, connected to the transmitting end microcontroller, and used for converting the first direct current into the first alternating current; a power amplifier circuit, connected to the oscillation circuit to amplify the first alternating current; A transmitting end coil, used to be connected to the power amplifier circuit, and to convert the first alternating current after power amplification into an alternating magnetic field for energy supply; The receiving terminal node is prepared by an integrated process and is deployed one-to-one with the transmitting terminal node, including: The second housing is made of nylon material and has a nested structure of a second set shape, wherein the second set shape corresponds to and fits with the first set shape to form a detachable associated structure; A receiving end coil, used for inducing the alternating magnetic field emitted by the transmitting end coil and generating a second alternating current; A rectifier circuit, used for converting the second alternating current into a second direct current; A receiving end microcontroller is used to collect the power parameters of the second direct current; the receiving end microcontroller is also provided with a second short-range communication module for sending the power parameters to the first short-range communication module, so as to be forwarded to the transmitting end microcontroller to adjust the power supply power according to the power parameters for power matching; A power supply interface is connected to the receiving end microcontroller to provide power to an external load.

2. The wireless charging node based on optical fiber energy transmission according to claim 1 is characterized in that: The laser comprises: a laser diode for generating a laser beam with a wavelength of 808nm and / or 1550nm; An erbium-doped laser amplifier, used to amplify the power of the laser beam generated by the laser diode and introduce it into the optical fiber in the optical fiber cable; A wavelength division multiplexer, used for combining or separating the laser beams of each set wavelength; An optical fiber collimator is used to guide the laser beam into the optical fiber.

3. The wireless charging node based on optical fiber energy transmission according to claim 1, characterized in that: The first short-range communication module and the second short-range communication module adopt a Bluetooth module, a StarFlash module, a Wifi module or a ZigBee short-range communication module.

4. The wireless charging node based on optical fiber energy transmission according to claim 1, characterized in that: The transmitting end microcontroller is also provided with a phase-locked loop for tracking and adjusting the oscillation frequency of the oscillation circuit, and feeding back to the transmitting end microcontroller for adjustment.

5. The wireless charging node based on optical fiber energy transmission according to claim 1, characterized in that: The optical fiber is made of quartz glass material, and is provided with at least one layer of high-power resistant coating on the outside; the outside of the optical fiber is wrapped and packaged by aramid fiber or carbon fiber; The high-power resistant coating is a fluorocarbon coating or a polyimide coating; the fluorocarbon coating is a silicon carbide coating; A metal armor layer is also arranged inside the optical fiber cable, and the metal armor layer is woven by metal wires; Teflon material is used to fill and isolate the optical fibers.

6. The wireless charging node based on optical fiber energy transmission according to claim 1, characterized in that: A magnet is arranged on the first shell at a first set position, and a magnet is arranged on the second shell at a second set position. The first set position corresponds to the second set position, and the relative position of the first shell and the second shell is maintained by magnetic attraction to ensure that the transmitting end coil is aligned with the receiving end coil.

7. The wireless charging node based on optical fiber energy transmission according to claim 1, characterized in that: The transmitting terminal node also includes: A power storage device connected to the photocell to store power, wherein the power storage device is a battery pack; The battery management system is arranged in the sending end microcontroller and manages the charging and discharging of the power storage device and the photovoltaic cell.

8. The wireless charging node based on optical fiber energy transmission according to claim 1, characterized in that: The rectification circuit adopts a multi-stage rectification structure based on silicon carbon-based rectifiers.

9. The wireless charging node based on optical fiber energy transmission according to claim 1, characterized in that: The transmitting terminal node and the receiving terminal node are also provided with a temperature sensor and an overload protector respectively.

10. The wireless charging node based on optical fiber energy transmission according to claim 1, characterized in that: The transmitting end microcontroller is loaded with a control model pre-trained based on reinforcement learning. The control model takes the power state parameters of the photocell, the oscillation circuit, the power amplifier circuit, the transmitting end coil, the receiving end coil, the rectifier circuit and the external load as input, and outputs corresponding control actions to control the working parameters of the photocell, the oscillation circuit, the power amplifier circuit and the rectifier circuit to achieve power matching between the transmitting end and the receiving end.

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