A wireless charging node based on optical fiber energy transmission

Abstract

The application provides a wireless charging node based on optical fiber energy transmission, which utilizes optical fiber to overcome the influence of external environment on the energy supply cable, sets a high-power resistant coating in the optical fiber cable, reduces optical energy transmission loss, and utilizes aramid fiber or carbon fiber to wrap the optical fiber, so that light weight and cable strength can be improved. The wireless charging node is based on a nylon material to make a shell, which can eliminate the interference of wireless power supply while being light in weight. The transmission end microcontroller is utilized to control the operation parameters of each component to realize power matching between the transmission end and the receiving end, reduce the influence of external environment and equipment operation state on wireless power supply, and improve the wireless power supply efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of optical fiber energy supply, and in particular to a wireless charging node based on optical fiber energy transmission. BACKGROUND

[0002] Wireless energy transmission is based on electromagnetic induction, which is extremely susceptible to external interference, including the metal components of the device itself, which can also affect power transmission. The prior art mostly uses metal wires for power transmission, which has a lot of loss, and lacks active adjustment of power supply parameters during wireless power supply, and does not actively overcome the external environment to achieve power matching between the power transmitting end and the receiving end, reduce loss and improve energy transmission efficiency. Therefore, a new wireless charging node is urgently needed. SUMMARY

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

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

[0005] A transmitting end node is disposed on an optical fiber cable according to a predetermined position, and at least one low-bending-sensitivity optical fiber is embedded in the optical fiber cable; a front end of the optical fiber cable is connected to a laser to generate and introduce a plurality of laser beams of a set wavelength; the transmitting end node comprises:

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

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

[0008] A transmitting end microcontroller is disposed 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 power of the photocell by step-down and step-up; 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 oscillation circuit is connected to the transmitting end microcontroller and is used to convert first direct current into first alternating current;

[0009] A power amplification circuit is connected to the oscillation circuit to amplify the first alternating current;

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

[0011] The receiving terminal node is deployed in one-to-one correspondence with the transmitting terminal node, comprising:

[0012] A second shell is made of a nylon material into a second set shape nested structure, the second set shape corresponds to the first set shape and fits each other, forming a detachable associated structure;

[0013] The receiving end coil is used to induce the alternating magnetic field emitted by the transmitting end coil and generate a second alternating current;

[0014] The rectifier circuit is used to convert the second alternating current into a second direct current;

[0015] The 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 for forwarding to the transmitting end microcontroller to adjust the power supply power according to the power parameters for power matching;

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

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

[0018] The doped fiber laser amplifier is used to amplify the power of the laser beam generated by the laser diode and introduce it into the optical fiber of the optical fiber cable;

[0019] The wavelength division multiplexer is used to combine or separate the laser beams of each set wavelength;

[0020] The 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 use Bluetooth module, star flash module, Wifi module or Zigbee short-range communication module.

[0022] In some embodiments, 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.

[0023] In some embodiments, the optical fiber is made of quartz glass material, and at least one layer of high-power resistant coating is provided outside; the optical fiber is wrapped and packaged by aramid fiber or carbon fiber; the high-power resistant coating is fluorocarbon coating or polyimide coating; the fluorocarbon coating is silicon carbide coating; the optical fiber cable is also provided with a metal armor layer, which is obtained by braiding metal wire; the optical fibers are filled and isolated by Teflon material.

[0024] In some embodiments, a magnet is arranged on the first shell at a first set position, a magnet is arranged on the second shell at a second set position, the first set position and the second set position correspond to each other, and the relative positions of the first shell and the second shell are 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] An electricity storage device is connected to the photovoltaic cell for electricity storage, and the electricity storage device is a battery pack.

[0027] A battery management system is arranged in the transmitting end microcontroller to manage the charging and discharging of the electricity storage device and the photovoltaic cell.

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

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

[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 photovoltaic cell, the oscillation circuit, the power amplifier circuit, the transmitting end coil, the receiving end coil, the rectifier circuit and the external load as inputs, and outputs corresponding control actions to control the working parameters of the photovoltaic cell, the oscillation circuit, the power amplifier circuit and the rectifier circuit, so as to realize power matching between the transmitting end and the receiving end.

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

[0032] The wireless charging node based on optical fiber energy transmission according to the present application utilizes optical fiber for functions, can overcome the influence of the external environment on the energy supply cable, can reduce optical energy transmission loss by arranging a high-power resistant coating in the optical fiber cable, and can realize lightweight and cable strength improvement by wrapping the optical fiber with aramid fiber or carbon fiber. The wireless charging node is based on a nylon material to make a shell, which can eliminate interference on wireless power supply while being lightweight. The transmitting end microcontroller is used to control the operating parameters of each component to realize power matching between the transmitting end and the receiving end, reduce the influence of the external environment and the equipment operating state on wireless power supply, and improve the wireless power supply efficiency.

[0033] Additional advantages, objects, and features of the application will be set forth in part by the description that follows, and will become apparent to those skilled in the art upon examination of the following detailed description and drawings in which

[0034] Those skilled in the art will appreciate that the objects and advantages of the application can be practiced without resorting to the details of the following description. The following detailed description and drawings are provided to describe the application and to assist in the understanding thereof. BRIEF DESCRIPTION OF DRAWINGS

[0035] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application. The components in the drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the application. For purposes of clarity and understanding, it is to be understood that certain portions of the drawings can be exaggerated and others omitted in order to depict certain aspects of the application.

[0036] Figure 1 Structure diagram of the wireless charging node based on fiber energy transmission according to an embodiment of the application.

[0037] Figure 2 Structure diagram of the wireless charging node based on fiber energy transmission according to an embodiment of the application.

[0038] REFERENCE NUMERALS

[0039] 100: transmitting terminal node; 101: photovoltaic cell; 102: transmitting terminal microcontroller;

[0040] 103: oscillation circuit; 104: power amplification circuit; 105: transmitting terminal coil;

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

[0042] 202: rectification circuit; 203: receiving terminal microcontroller; 204: power supply interface;

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

[0044] In order to make the objects, technical solutions and advantages of the application clearer, the following further describes the application in conjunction with the embodiments and drawings. Herein, the illustrative embodiments of the application and the descriptions thereof are used to explain the application but are not limiting to the application.

[0045] It should be noted that, in order not to obscure the application with unnecessary details, only the structures and / or processing steps closely related to the solution according to the application are shown in the drawings, while other details not relevant to the application are omitted.

[0046] It should be emphasized that the term "comprises / comprising" when used in this text is taken to mean the presence of a stated feature, element, step or component, but does not preclude the presence or addition of one or more other features, elements, steps or components.

[0047] It should be noted that, in this text, the term "connected" can mean not only direct connection, but also indirect connection with an intermediate object, unless otherwise specified.

[0048] In the following, embodiments of the application will be described with reference to the accompanying drawings. In the drawings, the same reference numerals represent the same or similar parts or the same or similar steps.

[0049] The conventional wireless energy transmission system usually uses metal as the main building material of the wire and the power supply node, which is easy to produce electromagnetic interference and limits the layout range of the node. At the same time, due to the large density of metal materials, the weight of the node is also large, which is not convenient to carry and move. The prior art lacks active intervention for external and internal interference elements in the process of wireless power supply, and cannot efficiently realize the power matching of the sending end and the receiving end. Therefore, the present application provides a metal-free wireless charging lightweight node based on optical fiber energy transmission, which can reduce electromagnetic interference while achieving small size, light weight, and convenient layout and use.

[0050] Specifically, the present application provides a wireless charging node based on optical fiber energy transmission, as shown in Figure 1 and Figure 2 , comprising: a transmitting end node 100 and a receiving end node 200.

[0051] The transmitting end node 100 is deployed on the optical fiber cable 300 according to the preset position, and the optical fiber cable 300 is embedded with at least one low-bend-sensitive optical fiber. The low-bend-sensitive optical fiber (Bend-Insensitive Fiber, BIF) is a kind of optical fiber specially designed for low loss under small bending radius, which is widely used in indoor wiring, data center, high-density distribution frame and other scenes. 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 at least one high-power resistant coating is arranged outside the optical fiber. 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 optical fiber is wrapped and packaged by aramid fiber or carbon fiber. The front end of the optical fiber cable 300 is connected to the laser 400 to generate and introduce a plurality of laser beams of a set wavelength.

[0054] The optical fiber cable 300 further comprises a metal armor layer for enhancing mechanical strength, and the metal armor layer is obtained by braiding metal wires. The optical fibers are filled and separated by Teflon material.

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

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

[0057] The transmitting terminal node 100 comprises a first housing, a photovoltaic cell 101, a transmitting terminal microcontroller 102, an oscillation circuit 103, a power amplification circuit 104, and a transmitting terminal coil 105.

[0058] The first housing is made of nylon material and has a first set shape of a nested structure. Nylon, also known as polyamide (PA), is a kind of high molecular material connected by repeated amide bonds (-CONH-). It is generated by condensation polymerization of diamin and diacid, or by ring-opening polymerization of cyclohexanone.

[0059] The photovoltaic cell 101 is arranged in the first housing and connected to the optical fibers in the optical fiber cable 300. The photovoltaic cell 101 is a device that directly converts light energy into electrical energy. When a laser beam shines on a semiconductor material, a photon excites an electron to jump from a valence band to a conduction band, forming an electron-hole pair. These carriers are separated under the action of the built-in electric field, generating an electric current.

[0060] The transmitting terminal microcontroller 102 is arranged in the first housing and connected to the photovoltaic cell 101, and is used to change the duty cycle by pulse width modulation or control the power supply power of the photovoltaic cell 101 by step-down and step-up. The transmitting terminal microcontroller 102 further comprises a first short-range communication module 106. The transmitting terminal microcontroller 102 performs power matching based on a control model pre-trained by reinforcement learning.

[0061] Wherein, the transmitting end microcontroller 102 establishes communication with the receiving end through the first short-range communication module 106, and dynamically adjusts the power supply parameters according to the returned voltage, current, power or temperature information, increases or reduces the transmitting end power, 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 power supply scheme, the oscillation circuit 103 is usually implemented by an LC oscillation circuit 103, a crystal oscillation circuit 103 or a multi-tuned oscillation circuit 103. The core principle is to use the positive feedback mechanism in the circuit to continuously convert the direct current input signal into an alternating signal. Specifically, the LC oscillation circuit 103 can generate an alternating signal at a specific frequency through the resonance characteristics of inductance and capacitance. If higher stability is required, a crystal oscillator can be used, which uses the piezoelectric effect of a quartz crystal to provide a high-precision oscillation signal. In addition, the transmitting end microcontroller 102 inputs a trigger signal or adjusts parameters to the oscillation circuit 103 through a PWM signal or other digital control methods to realize the control of frequency and waveform. These designs ensure that the output alternating current signal has appropriate frequency, amplitude and waveform characteristics, providing a stable and efficient input source for subsequent power amplification and wireless power supply.

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

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

[0065] The receiving terminal node 200, corresponding to the transmitting terminal node 100, 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 housing is made of nylon material and has a second set shape, which corresponds to the first set shape and fits with each other, forming a detachable associated structure. Corresponding to the first housing, it can be in the form of injection molding to ensure stability. The shapes of the first housing and the second housing are complementary, forming a detachable nested structure, which provides the possibility for diversified application modes. In some embodiments, magnets are arranged on the first housing according to a first set position, and magnets are arranged on the second housing according to a second set position. The first set position and the second set position correspond to each other, and the relative positions of the first housing and the second housing are 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 has low efficiency; full-wave rectification uses two diodes or a center-tapped transformer to improve efficiency, but the structure is complex; bridge rectification forms a bridge structure through four diodes, and the output is stable and does not require a special transformer; active rectification reduces power loss through MOSFET and other switching devices, suitable for low-voltage high-efficiency applications; resonant rectification combines a resonant circuit to improve efficiency and stability, suitable for high-frequency wireless power supply. With a filter (such as a capacitor, inductor, or LC filter), the output can be further smoothed to meet different scene requirements.

[0069] In some embodiments, the rectifier circuit 202 employs a multi-stage rectification structure based on silicon-carbon (SiC) rectifiers. The multi-stage rectification structure based on SiC rectifiers is a high-efficiency rectification design, particularly suitable for high-frequency and high-power wireless power supply scenarios. This structure utilizes rectifier devices made of SiC material, which has higher withstand voltage capability, lower forward voltage drop, and faster switching speed, enabling significant reduction of energy loss in high-frequency operation. The multi-stage rectification structure achieves higher output voltage or current capability by combining multiple rectification stages in series or parallel, while reducing the thermal load of a single-stage circuit. Typically, the first stage employs bridge rectification to convert the positive and negative half cycles of alternating current into direct current with the same direction; then a resonant rectification or voltage doubling rectification module is added to improve rectification efficiency through a resonant circuit or to increase output voltage through a voltage-doubling 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 rectification circuit 202 can also incorporate active rectification technology, using SiC MOSFET or SBD (Schottky barrier diode) to dynamically adjust the rectification path, further reducing power consumption. Due to the high thermal conductivity of SiC material, the rectifier can withstand higher power density, making it 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 for forwarding 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 external loads.

[0072] In some embodiments, the first short-range communication module 106 and the second short-range communication module 205 employ Bluetooth modules, star flash 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 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 achieve tracking and adjustment of the oscillation frequency of the oscillation circuit 103. The 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 phase difference after comparison is output by the phase comparator to control the voltage, and after smoothing by the low-pass filter, the output frequency of the voltage-controlled oscillator (VCO) is adjusted to gradually approach the frequency of the reference signal. When the phase difference is stable within zero or an allowed range, the frequency of the oscillation circuit 103 is locked at the reference frequency. The microcontroller monitors the state of the PLL in real time through a digital interface, adjusts the reference frequency or the parameters of the phase-locked loop to adapt to external interference or load changes. In wireless power supply, this real-time frequency locking can ensure that the transmitting end and the receiving end maintain good coupling efficiency. Through cooperation with the short-range communication module of the receiving end, the phase-locked loop can dynamically adjust the oscillation frequency according to the feedback signal of the receiving end, optimize the stability and efficiency of energy transmission, and be suitable for high-frequency and high-efficiency wireless power supply application scenarios.

[0074] In some embodiments, the transmitting end sub-node 100 further comprises a power storage device connected to the photovoltaic cell 101 for power storage, and the power storage device is a battery pack; and a battery management system provided in the transmitting end microcontroller for charging and discharging management of the power storage device and the photovoltaic cell 101.

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

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

[0077] The control model training process based on reinforcement learning aims to optimize the power matching between the transmitting end and the receiving end in a wireless power supply system, improving transmission efficiency and system stability. This model uses reinforcement learning (RL) algorithms for pre-training, and through environmental interaction and reward mechanisms, it achieves optimal control of complex dynamic systems. Here is a description of the specific training process and its working mechanism:

[0078] 1. Control model training process

[0079] 1.1 Parameter collection and environment construction:

[0080] To conduct training, a simulation environment of the entire wireless power supply system needs to be established, covering the dynamic behavior models of photovoltaic cells, oscillation circuits, power amplifier circuits, transmitting coils, receiving coils, rectifier circuits, and loads.

[0081] Input parameters can include: photovoltaic cell output power, current and voltage. The working frequency, output waveform quality and phase of the oscillation circuit. The gain, output power and voltage of the power amplifier circuit. The coupling coefficient and transmission efficiency of the transmitting coil. The receiving coil induced voltage, rectifier output voltage and load changes. System state parameters will be updated dynamically in real-time simulation, reflecting the influence 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: adjusting the output power of the photovoltaic cell (through duty cycle adjustment). Dynamically adjusting the working frequency of the oscillation circuit to match the receiving end resonance frequency. Control the gain of the power amplifier circuit to match the receiving end requirements. Adjust the rectifier circuit working mode (such as switching rectifier devices or filter parameters).

[0084] 1.3 Reward function definition:

[0085] The reward function is used to guide the optimization goal of the model, including: maximizing the receiving end load power. Minimize the power loss of the transmitting end and the receiving end. Ensure the stability of power transmission and reduce fluctuations. Avoid system overload or abnormal operation.

[0086] 1.4 Reinforcement learning algorithm selection and training:

[0087] Deep reinforcement learning algorithms (such as DQN, DDPG or PPO) are used to evaluate the expected returns of state-action pairs through policy networks and value networks. During training, the model is initialized with random parameters, collects states from the environment, and performs actions, records rewards and next states. The network weights are constantly 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 transmitting end microcontroller collects system status parameters (such as voltage, current, frequency, power, etc.), inputs them into the pre-trained control model, and obtains 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 a short-range communication module.

[0091] 2.2 Dynamic decision and control:

[0092] The control model outputs control actions in real time according to input parameters. For example: adjusting the power supply of the photocell to adapt to the power demand of the transmitting end. Adjusting the frequency of the oscillator circuit to ensure resonance matching with the receiving end coil. Dynamically adjusting the gain of the power amplifier circuit to avoid excessive amplification and energy waste. Improve the working state of the rectifier circuit to optimize the stability of the output DC. The model can adapt to external environmental changes (such as coil spacing fluctuations, load current changes, etc.) and continuously optimize energy supply efficiency.

[0093] 2.3 Feedback optimization:

[0094] The control model records environmental conditions and control results during actual operation, continuously accumulates data, and further optimizes decision quality through online learning or regular updates of reinforcement learning strategies.

[0095] Through this reinforcement learning control model, the transmitting end and receiving end 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 transmission distance changes, making the wireless energy supply system more efficient, intelligent, and reliable in actual application.

[0096] In summary, the wireless charging node based on optical fiber energy transmission described in the present application uses optical fiber for function, which can overcome the influence of external environment on the power supply cable. By setting a high-power resistant coating in the optical fiber cable, the optical energy transmission loss can be reduced. The optical fiber is wrapped with aramid fiber or carbon fiber to achieve lightweight and improve cable strength. The wireless charging node is based on nylon material to make the shell, which is lightweight and eliminates interference to wireless power supply. The transmitting end microcontroller controls the operating parameters of each component to achieve power matching between the transmitting end and the receiving end, reduces the influence of external environment and equipment operating state on wireless power supply, and improves the efficiency of wireless power supply.

[0097] Those of ordinary skill in the art will appreciate that the various illustrative components, systems and methods described in connection with the embodiments disclosed herein can be implemented as hardware, software, or both. The particular implementation is dependent on the specific application and design constraints imposed on the overall system. Skilled persons can implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application. When implemented in hardware, for example, the hardware can comprise an electronic circuit, an Application Specific Integrated Circuit (ASIC), a suitable firmware, a plug-in, a functional card, etc. When implemented in software, the elements of the application are the program or code segments to perform a specific task. The program or code segments can be stored in a machine-readable medium, or transmitted by a carrier wave as data signals over a transmission medium or communication link.

[0098] It is to be understood that the application is not limited to the particular configurations and processes described herein and shown in the drawings. For simplicity, detailed descriptions of known methods and apparatuses are omitted so as not to obscure the disclosure. In the above-described embodiments, several specific steps are described and illustrated as examples. However, the method processes of the present application are not limited to the specific steps described and illustrated, and the order of the steps can be changed, or other steps can be added, or replaced, or eliminated, depending on the application.

[0099] In the present application, features described and / or illustrated in relation to one embodiment can be used in the same or a similar way in one or more other embodiments, and / or combined with or instead of features of other embodiments.

[0100] The above description is only preferred embodiments of the present application, and is not intended to limit the present application. The embodiments of the present application can be variously changed and modified by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the present application.

Claims

1. A wireless charging node based on optical fiber power transmission, characterized in that, include: The transmitting terminal node is deployed on the optical fiber cable at a preset position, and the optical fiber cable is embedded with at least one low-bending sensitive optical fiber; The front end of the optical fiber cable is connected to a laser to generate and guide multiple laser beams of set wavelengths. The transmitting terminal node is fabricated using an integrated process, including: The first housing is a nested structure of a first predetermined shape made of nylon material; A photovoltaic cell is disposed inside the first housing, and the photovoltaic cell is connected to the optical fiber in the optical fiber cable; A transmitter microcontroller, disposed within the first housing and connected to the photovoltaic cell, is used to change the duty cycle via pulse width modulation or to control the power supply of the photovoltaic cell via buck-boost; the transmitter microcontroller also includes a first short-range communication module; the transmitter microcontroller performs power matching based on a reinforcement learning pre-trained control model; An oscillation circuit, connected to the transmitter microcontroller, is used to convert the first direct current into the first alternating current. A power amplifier circuit is connected to the oscillation circuit to amplify the first AC current; The transmitting coil is used to connect to the power amplifier circuit to convert the amplified first AC power into an alternating magnetic field for power supply. The receiving terminal nodes are fabricated using an integrated process and deployed in a one-to-one correspondence with the transmitting terminal nodes, including: The second housing is made of nylon material and has a nested structure of a second predetermined shape. The second predetermined shape corresponds to and fits into the first predetermined shape to form a detachable associated structure. The receiving coil is used to sense the alternating magnetic field emitted by the transmitting coil and generate a second alternating current. A rectifier circuit is used to convert the second alternating current into a second direct current; The receiving microcontroller is used to collect the power parameters of the second DC power supply; the receiving microcontroller is also equipped with a second short-range communication module for sending the power parameters to the first short-range communication module, so as to forward them to the transmitting microcontroller to adjust the power supply power for power matching according to the power parameters; A power supply interface is provided to connect the receiving end microcontroller to provide power to external loads.

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

3. The wireless charging node based on optical fiber power transmission according to claim 1, characterized in that, The first short-range communication module and the second short-range communication module adopt Bluetooth module, Star Flash module, Wi-Fi module or Zifeng short-range communication module.

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

5. The wireless charging node based on optical fiber power transmission according to claim 1, characterized in that, The optical fiber is made of quartz glass and has at least one high-power resistant coating on the outside; the optical fiber is wrapped and encapsulated with aramid fiber or carbon fiber. The high-power resistant coating is a fluorocarbon compound coating or a polyimide coating; the fluorocarbon compound coating is a silicon carbide coating. The optical fiber cable also has a metal armor layer, which is made of woven metal wires; the optical fibers are filled and isolated with Teflon material.

6. The wireless charging node based on optical fiber power transmission according to claim 1, characterized in that, A magnet is set on the first housing at a first predetermined position, and a magnet is set on the second housing at a second predetermined position. The first predetermined position and the second predetermined position correspond to each other. The relative positions of the first housing and the second housing are maintained by magnetic attraction to ensure that the transmitting coil and the receiving coil are aligned.

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

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

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

10. The wireless charging node based on optical fiber power transmission according to claim 1, characterized in that, The transmitter microcontroller is equipped with a control model pre-trained based on reinforcement learning. The control model takes the power state parameters of the photovoltaic cell, the oscillation circuit, the power amplifier circuit, the transmitter coil, the receiver coil, the rectifier circuit, and the external load as inputs, and outputs corresponding control actions to control the operating parameters of the photovoltaic cell, the oscillation circuit, the power amplifier circuit, and the rectifier circuit, thereby achieving power matching between the transmitter and receiver.

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