Double-helix coupling mechanism type unmanned aerial vehicle wireless charging system and parameter design method

Abstract

The invention discloses a double-helix coupling mechanism type unmanned aerial vehicle wireless charging system and a parameter design method. According to the method, more efficient wireless energy transmission is achieved by accurately calculating and optimizing parameters of all assemblies. According to the design method, factors such as the output load, the system working frequency, the coupling capacitance and the equivalent capacitance value are considered, and the stability and the charging efficiency of the system under different working conditions are ensured. Meanwhile, repeated iteration and adjustment are carried out through circuit simulation software, the output requirement can be accurately matched, and the design precision and practicability are improved. Besides, due to the design of the double-spiral coupling mechanism, the coupling effect between the transmitting end and the receiving end is enhanced, the energy loss in the transmission process is reduced, and the dual-spiral coupling mechanism is particularly suitable for unmanned aerial vehicle equipment with the limited size. Moreover, the design method is high in universality, can adapt to wireless charging systems with different power requirements and unmanned aerial vehicle sizes, and has wide applicability and popularization value.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicle wireless charging, and in particular to a double-helix coupling mechanism type unmanned aerial vehicle wireless charging system and a parameter design method. Background Art

[0002] An unmanned aerial vehicle (UAV), also known as a drone, is an aircraft controlled by a computer or remote control device without the need for direct operation by a pilot. Drone technology has made significant progress and applications in many fields, including military, business, scientific research, and entertainment.

[0003] At present, most small drones used in practice are mainly driven by the power of their rechargeable batteries, but their development is limited by the battery's storage capacity and volume and weight. There are two main ways to charge drone batteries: wired charging and wireless charging. Compared with traditional wired power supply technology, autonomous charging of drones through wireless power transmission (WPT) technology has many irreplaceable advantages such as electrical isolation safety, non-contact charging convenience, and good adaptability to harsh environments, enabling drones to obtain a more efficient and safer flight experience.

[0004] At present, the commonly used near-field coupling in WPT technology is mainly divided into magnetic field coupled wireless power transmission (MC-WPT) and electric field coupled electric power transmission (EC-WPT). Among them, MC-WPT technology is relatively mature, but it is limited by the weight and high cost of ferrite cores, and has its inherent bottlenecks in the application of wireless charging systems for drones. Although EC-WPT technology was developed later than MC-WPT technology, its unique advantages such as light weight, low cost and normal energy transmission in the presence of metal obstacles make it have a broader application space than MC-WPT technology, especially in the field of wireless charging of drones.

[0005] In the current EC-WPT system research, the coupling mechanism of the system is usually a flat plate coupling mechanism or a disc coupling mechanism. However, the square flat plate coupling mechanism may change the fluid mechanics of the drone, making it unable to take off normally; the energy transmission effect of the disc coupling mechanism is relatively poor due to the edge effect of the charge distribution on the metal plate; in addition, these two coupling mechanisms require a large area and a large weight, making the drone less flexible. Summary of the invention

[0006] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0007] In view of the above existing problems, the present invention is proposed.

[0008] Therefore, the present invention provides a double-helix coupling mechanism type UAV wireless charging system and a parameter design method, which can solve the problems mentioned in the background technology.

[0009] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0010] In a first aspect, the present invention provides a double-helix coupling mechanism type unmanned aerial vehicle wireless charging system, comprising: a primary side transmission circuit, a secondary side transmission circuit and a double-helix coupling mechanism;

[0011] The double helix coupling mechanism comprises a transmitting end and a receiving end;

[0012] The transmitting end includes a first emitter plate P1 and a second emitter plate P2;

[0013] The receiving end includes a first receiving electrode plate P3 and a second receiving electrode plate P4.

[0014] As a preferred solution of the double-helix coupling mechanism type UAV wireless charging system described in the present invention, the double-helix coupling mechanism further includes:

[0015] The first emitter plate P1, the second emitter plate P2, the first receiver plate P3 and the second receiver plate P4 are all planar spiral plates;

[0016] The first emitter plate P1 and the second emitter plate P2 are mutually nested;

[0017] The first receiving electrode plate P3 and the second receiving electrode plate P4 are mutually nested;

[0018] The first emitter plate P1 and the second emitter plate P2 are provided with a dielectric plate P d ;

[0019] When the transmitting end is coupled with the receiving end, the first transmitting electrode plate P1 is arranged opposite to the second receiving electrode plate P4, and the second transmitting electrode plate P2 is arranged opposite to the first receiving electrode plate P3.

[0020] As a preferred solution of the double-helix coupling mechanism type UAV wireless charging system of the present invention, it also includes:

[0021] The primary transmission circuit includes a DC power supply V connected in sequence d , an inverter circuit and a primary resonance compensation circuit, wherein the output end of the primary resonance compensation circuit is connected to the first emitter plate P1 and the second emitter plate P2;

[0022] The secondary transmission circuit includes a secondary resonance compensation circuit, a secondary rectification and filtering circuit and a load R connected in sequence. L The input end of the secondary side resonance compensation circuit is connected to the first receiving electrode plate P3 and the second receiving electrode plate P4.

[0023] As a preferred solution of the double-helix coupling mechanism type UAV wireless charging system of the present invention, it also includes:

[0024] The primary side resonance compensation circuit and the secondary side compensation circuit are symmetrically arranged LC compensation network structures;

[0025] The primary resonance compensation circuit includes a primary compensation capacitor C1 and a primary compensation inductor L1, and the secondary compensation circuit includes a secondary compensation capacitor C2 and a secondary compensation inductor L2.

[0026] In a second aspect, the present invention provides a method for designing parameters of a double-helix coupling mechanism type unmanned aerial vehicle wireless charging system, comprising:

[0027] Determine the system output power and system operating frequency according to the output load;

[0028] Determine the size parameters of the coupling mechanism according to the power requirements and the size of the drone, and use simulation analysis software to obtain the coupling capacitance between each plate and calculate the equivalent capacitance value;

[0029] The initial value of the inductor is calculated based on the system parameters obtained by simulation, and the values ​​of the primary compensation capacitor C1, the secondary compensation capacitor C2, the primary compensation inductor L1 and the secondary compensation inductor L2 are calculated based on the equivalent circuit and the resonance condition;

[0030] According to the above parameters, use circuit simulation software to simulate and obtain simulation output, and judge whether the simulation output is consistent with the output requirement. If not, change the parameters and simulate again until the simulation output is consistent with the output requirement, and the parameter design is completed.

[0031] As a preferred solution of the parameter design method of the double-helix coupling mechanism type unmanned aerial vehicle wireless charging system described in the present invention, wherein: the coupling capacitance between each electrode plate and calculating the equivalent capacitance value include:

[0032] The equivalent capacitance C between the first emitter plate P1 and the first receiver plate P3 13 ;

[0033] And the equivalent capacitance C between the first emitter plate P1 and the second receiver plate P4 14 ;

[0034] And the equivalent capacitance C between the second emitter plate P2 and the first receiver plate P3 23 ;

[0035] and the equivalent capacitance C between the second emitter plate P2 and the second receiver plate P4 24 ;

[0036] And the equivalent capacitance C between the first emitter plate P1 and the second emitter plate P2 12 ;

[0037] And the equivalent capacitance C between the first receiving plate P3 and the second receiving plate P4 34 .

[0038] As a preferred solution of the parameter design method of the double-helix coupling mechanism type unmanned aerial vehicle wireless charging system described in the present invention, it also includes:

[0039] The system output power P out for:

[0040]

[0041]

[0042] Among them, R L represents the load, V1 is the inverter output voltage of the primary side, and ω is the angular frequency of the system.

[0043] As a preferred solution of the parameter design method of the double-helix coupling mechanism type unmanned aerial vehicle wireless charging system described in the present invention, it also includes:

[0044] The system resonance condition is:

[0045]

[0046] Wherein, C1 is the capacitance value of the primary compensation capacitor C1, L1 is the capacitance value of the primary compensation inductor L1, C2 is the capacitance value of the secondary compensation capacitor C2, and L2 is the capacitance value of the secondary compensation inductor L2.

[0047] In a third aspect, the present invention provides a computer device, comprising a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the above-mentioned method when executing the computer program.

[0048] In a fourth aspect, the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program implements the steps of the method described above when executed by a processor.

[0049] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention proposes a double-helix coupling mechanism type UAV wireless charging system and a parameter design method, which realizes more efficient wireless energy transmission by accurately calculating and optimizing the parameters of each component. The design method takes into account factors such as output load, system operating frequency, coupling capacitance and equivalent capacitance value, ensuring the stability and charging efficiency of the system under different working conditions. At the same time, through repeated iterations and adjustments of circuit simulation software, the output requirements can be accurately matched, improving the accuracy and practicality of the design. In addition, the double-helix coupling mechanism design of the present invention enhances the coupling effect between the transmitting end and the receiving end, reduces the energy loss during the transmission process, and is particularly suitable for UAV equipment with limited size. Moreover, the design method is highly versatile and can adapt to wireless charging systems with different power requirements and UAV sizes, and has wide applicability and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0051] Figure 1 A schematic diagram of the structure of a double-helix coupling mechanism of a double-helix coupling mechanism type UAV wireless charging system and a parameter design method provided by one embodiment of the present invention;

[0052] Figure 2 A circuit diagram of a double-helix coupling mechanism type unmanned aerial vehicle wireless charging system and a parameter design method provided by an embodiment of the present invention;

[0053] Figure 3 A circuit diagram of a double-helix coupling mechanism equivalent model of a double-helix coupling mechanism type UAV wireless charging system and a parameter design method provided by one embodiment of the present invention;

[0054] Figure 4 A circuit diagram of an equivalent model of a wireless charging system for unmanned aerial vehicles (UAVs) with a double-helix coupling mechanism and a parameter design method provided by one embodiment of the present invention;

[0055] Figure 5 An electric field distribution diagram of a coupling mechanism in a system simulation of a double-helix coupling mechanism type UAV wireless charging system and a parameter design method provided by an embodiment of the present invention;

[0056] Figure 6A voltage and current waveform diagram after inverter output in a system simulation of a double-helix coupling mechanism type unmanned aerial vehicle wireless charging system and a parameter design method provided by an embodiment of the present invention;

[0057] Figure 7 Output voltage and current waveforms in system simulation of a double-helix coupling mechanism type unmanned aerial vehicle wireless charging system and parameter design method provided by one embodiment of the present invention;

[0058] Figure 8 An internal structural diagram of a computer device for a double-helix coupling mechanism type UAV wireless charging system and a parameter design method provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0059] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.

[0060] Example 1

[0061] Reference Figure 1-Figure 8 , which is the first embodiment of the present invention, provides a double-helix coupling mechanism type UAV wireless charging system and a parameter design method, including:

[0062] Before introducing the embodiments of the present application in detail, some concepts related to this document are first explained for the sake of clarity.

[0063] Double helix coupling: is a special coupling method used in wireless power transmission, which enhances the coupling efficiency of the electromagnetic field by using two intertwined spiral plates. This design can achieve high-efficiency energy transmission, especially suitable for scenarios that require energy transmission over relatively large distances or changing positions, such as wireless charging of drones. In this design, the double helix coupling mechanism consists of a transmitting end and a receiving end, each end of which contains two planar spiral plates, which are designed to be nested with each other to form an efficient electromagnetic coupling path.

[0064] Mutually nested: refers to the double helix coupling mechanism, where the first emitter plate P1 and the second emitter plate P2 at the transmitting end, and the first receiver plate P3 and the second receiver plate P4 at the receiving end, are designed to be nested with each other. This design increases the coupling area between the plates, thereby improving the coupling strength and efficiency of the electromagnetic field. When the transmitting end and the receiving end are aligned and close, the first emitter plate P1 will face the second receiver plate P4, and the second emitter plate P2 will face the first receiver plate P3, which can maximize the energy transmission efficiency.

[0065] The primary side resonant compensation circuit and the secondary side compensation circuit are key components in the wireless charging system. They are located at the transmitting end (primary side) and the receiving end (secondary side) respectively, and are used to improve the system's resonant characteristics and transmission efficiency. In this design, both circuits use an LC compensation network structure, that is, a circuit containing capacitors and inductors. The primary side compensation circuit consists of a primary side compensation capacitor and a primary side compensation inductor, while the secondary side compensation circuit consists of a secondary side compensation capacitor and a secondary side compensation inductor.

[0066] The function of the primary resonance compensation circuit is to ensure that the primary circuit reaches a resonant state at a predetermined operating frequency, which helps to improve the energy transmission efficiency. This circuit is usually connected to the emitter plate, and its design parameters need to be adjusted according to the system's operating frequency, transmission distance and other factors.

[0067] The function of the secondary side compensation circuit is to achieve a resonant state at the receiving end to match the resonant frequency of the primary side, further improving the efficiency of energy reception. In addition, the secondary side compensation circuit is also responsible for converting the received AC signal into a DC signal for use by the load.

[0068] In the related art, there is a design method for wireless charging system, but it usually only focuses on a single optimization index, such as charging efficiency or system stability, while ignoring other key factors, such as coupling effect, load change adaptability, etc. This may lead to the performance of the wireless charging system failing to meet expectations in practical applications, especially in scenarios such as drones that have strict requirements on charging efficiency and device size.

[0069] This application provides a method that can effectively solve the above-mentioned problems. Next, we will combine multiple embodiments to explain in detail how to implement the design of the double-helix coupling mechanism type drone wireless charging system;

[0070] Specifically, a double-helix coupling mechanism type UAV wireless charging system is proposed, comprising: a primary side transmission circuit, a secondary side transmission circuit and a double-helix coupling mechanism;

[0071] The double helix coupling mechanism includes a transmitting end and a receiving end;

[0072] The emitter end includes a first emitter plate P1 and a second emitter plate P2;

[0073] The receiving end includes a first receiving electrode plate P3 and a second receiving electrode plate P4.

[0074] Specifically, the double helix coupling mechanism also includes:

[0075] The first emitter plate P1, the second emitter plate P2, the first receiver plate P3 and the second receiver plate P4 are all planar spiral plates;

[0076] The first emitter plate P1 and the second emitter plate P2 are mutually nested;

[0077] The first receiving electrode plate P3 and the second receiving electrode plate P4 are mutually nested;

[0078] The dielectric plate P is provided on the first emitter plate P1 and the second emitter plate P2. d ;

[0079] When the transmitting end is coupled with the receiving end, the first transmitting electrode plate P1 is arranged opposite to the second receiving electrode plate P4, and the second transmitting electrode plate P2 is arranged opposite to the first receiving electrode plate P3.

[0080] It should be noted that the double helix coupling mechanism in the present application greatly enhances the coupling effect of the electromagnetic field. d The use of dielectric plate P can further improve transmission efficiency and reduce energy loss. d Usually made of materials with high dielectric constants, it can increase the electric field strength between the plates, thereby improving the energy transfer efficiency during wireless charging.

[0081] In the embodiment of the present application, the primary transmission circuit includes a DC power supply V connected in sequence d , an inverter circuit and a primary resonance compensation circuit, wherein the output end of the primary resonance compensation circuit is connected to the first emitter plate P1 and the second emitter plate P2;

[0082] The secondary transmission circuit includes a secondary resonance compensation circuit, a secondary rectification and filtering circuit and a load R connected in sequence. L The input end of the secondary side resonance compensation circuit is connected to the first receiving electrode plate P3 and the second receiving electrode plate P4.

[0083] The primary side resonant compensation circuit and the secondary side compensation circuit are symmetrically arranged LC compensation network structures;

[0084] The primary resonance compensation circuit includes a primary compensation capacitor C1 and a primary compensation inductor L1, and the secondary compensation circuit includes a secondary compensation capacitor C2 and a secondary compensation inductor L2.

[0085] In this embodiment, the first emitter plate P1, the second emitter plate P2, the first receiving plate P3 and the second receiving plate P4 have the same number of turns and thickness; the dielectric plate P d Compared with the traditional disc-shaped and square disc-shaped coupling mechanisms, the double-helix winding capacitor structure of the present application is more flexible, occupies less volume, and alleviates the problem of poor energy transmission effect caused by the edge effect of the charge distribution of the metal plate.

[0086] Furthermore, the primary transmission circuit is connected to the transmitter to provide modulated AC power to the transmitter. The primary transmission circuit includes a primary compensation circuit connected to the first emitter plate P1 and the second emitter plate P2, which adjusts its own capacitance and inductance parameters to make the transmitter resonate at the operating frequency to optimize energy transmission.

[0087] Furthermore, the secondary transmission circuit is connected to the receiving end, and is used to receive the AC signal coupled from the transmitting end, and convert it into a DC power supply for the battery or other loads of the drone. The secondary transmission circuit also includes a secondary compensation circuit, which is connected to the first receiving electrode plate P3 and the second receiving electrode plate P4, and is used to achieve resonant matching at the receiving end, and convert the AC signal into DC through rectification and filtering.

[0088] In this embodiment, if Figure 3 The equivalent circuit diagram of the double helix coupling mechanism shown in Figure 1 is 13 is the equivalent capacitance between the first emitter plate P1 and the first receiver plate P3, C 14 is the equivalent capacitance between the first emitter plate P1 and the second receiver plate P4, C 23 is the equivalent capacitance between the second emitter plate P2 and the first receiver plate P3, C 24 is the equivalent capacitance between the second emitter plate P2 and the second receiver plate P4, C 12 is the equivalent capacitance between the first emitter plate P1 and the second emitter plate P2; C 34 is the equivalent capacitance value between the first receiving electrode plate P3 and the second receiving electrode plate P4.

[0089] In this embodiment, it is defined that the first emitter plate P1 and the second emitter plate P2 are mutually nested, and the voltages of the first receiving plate P3 and the second receiving plate P4 are U P1 , U P2 , U P3 and U P4 .

[0090] Represent the voltages between plates P1 and P2, P3 and P4, P2 and P3, and P1 and P4, respectively. Respectively represent the current flowing into the second emitter plate P2 and the first receiving plate P3. The voltage of the plate is used as the reference ground, that is, U P1 =0V, according to Kirchhoff's law, The relationship is:

[0091]

[0092] Among them, the equivalent capacitance value C between the first emitter plate P1 and the first receiver plate P3 is 13 ; and the equivalent capacitance C between the first emitter plate P1 and the second receiver plate P4 14 ; and the equivalent capacitance C between the second emitter plate P2 and the first receiving plate P3 23 ; and the equivalent capacitance C between the second emitter plate P2 and the second receiver plate P4 24 ; and the equivalent capacitance C between the first emitter plate P1 and the second emitter plate P2 12 ; and the equivalent capacitance C between the first receiving plate P3 and the second receiving plate P4 34 .

[0093] In this embodiment, electric field coupling is generated between the first emitter plate P1 and the second receiver plate P4, and between the second emitter plate P2 and the first receiver plate P3 to achieve wireless power transmission. The inverter circuit uses a full-bridge inverter composed of four MOSFETs S1-S4, and the secondary side rectifier and filter circuit consists of a rectifier and a filter capacitor C f The rectifier is a full-bridge rectifier composed of four diodes D1-D4.

[0094] In this embodiment, the inverter output current V1 of the inverter is Load R L The equivalent resistance R eq =8R L / π 2 , the resonant frequency satisfies

[0095] In this embodiment, the system equivalent circuit diagram of the wireless charging system is as follows: Figure 4 As shown, Figure 4 middle:

[0096]

[0097] Then the voltage of the double helix coupling mechanism can be simplified as:

[0098]

[0099] in,

[0100]

[0101] System output power P out for:

[0102]

[0103] in,

[0104]

[0105] Where ω is the angular frequency of the system.

[0106] It should be noted that the equivalent circuit model of this double-helix coupling mechanism can accurately describe the capacitance relationship between each plate, so as to better control and adjust the energy transmission. By adjusting the parameters of the primary compensation circuit and the secondary compensation circuit, the resonant matching between the transmitting end and the receiving end can be achieved to improve the efficiency and stability of energy transmission and reduce the energy loss caused by the edge effect. In practical applications, by accurately controlling these equivalent capacitance values, the power supply parameters of the drone battery or other loads can be accurately adjusted to meet the needs of different working conditions. Therefore, the double-helix coupling mechanism of this embodiment not only improves the efficiency of wireless energy transmission, but also enhances the adaptability and stability of the system, which is of great practical significance for realizing an efficient and safe wireless charging system.

[0107] This embodiment also provides a method for designing parameters of a double-helix coupling mechanism type UAV wireless charging system, including:

[0108] According to the output load, denoted as R L , determine the system output power, denoted as P out , and the system operating frequency, denoted as f;

[0109] Determine the size parameters of the coupling mechanism according to the power requirements and the size of the drone, and use simulation analysis software to obtain the coupling capacitance between each plate and calculate the equivalent capacitance value;

[0110] The initial value of the inductor is calculated based on the system parameters obtained by simulation, and the values ​​of the primary compensation capacitor C1, the secondary compensation capacitor C2, the primary compensation inductor L1 and the secondary compensation inductor L2 are calculated based on the equivalent circuit and the resonance condition;

[0111] According to the above parameters, use circuit simulation software to simulate and obtain simulation output, and judge whether the simulation output is consistent with the output requirement. If not, change the parameters and simulate again until the simulation output is consistent with the output requirement, and the parameter design is completed.

[0112] Specifically, the coupling capacitance between each plate and the calculation of the equivalent capacitance value include:

[0113] The equivalent capacitance C between the first emitter plate P1 and the first receiver plate P3 13 ;

[0114] And the equivalent capacitance C between the first emitter plate P1 and the second receiver plate P4 14 ;

[0115] And the equivalent capacitance C between the second emitter plate P2 and the first receiver plate P3 23 ;

[0116] and the equivalent capacitance C between the second emitter plate P2 and the second receiver plate P4 24 ;

[0117] And the equivalent capacitance C between the first emitter plate P1 and the second emitter plate P2 12 ;

[0118] And the equivalent capacitance C between the first receiving plate P3 and the second receiving plate P4 34 .

[0119] In the embodiment of the present application, the system output power P out for:

[0120]

[0121] Among them, R L represents the load, V1 is the inverter output voltage of the primary side, and ω is the angular frequency of the system.

[0122] The system operating frequency can be obtained through the system resonance condition, which is:

[0123]

[0124] Wherein, C1 is the capacitance value of the primary compensation capacitor C1, L1 is the capacitance value of the primary compensation inductor L1, C2 is the capacitance value of the secondary compensation capacitor C2, and L2 is the capacitance value of the secondary compensation inductor L2.

[0125] In the parameter design method of the present application embodiment, firstly, according to the operating frequency of the system, the distance between the transmitting end and the receiving end, the dielectric plate P d The capacitance and inductance of the primary and secondary compensation circuits are calculated based on factors such as the dielectric constant. Then, three-dimensional electromagnetic field simulation is performed using simulation tools such as ANSYS and COMSOL to analyze the electric field distribution of the coupling mechanism under different working conditions in order to verify and optimize the design parameters.

[0126] In the embodiment of the present application, the simulation output is obtained by using circuit simulation software, and it is determined whether the simulation output is consistent with the output requirement. If not, the parameters are changed and the simulation is repeated until the simulation output is consistent with the output requirement. The parameter design is completed. Specifically, the equivalent circuit model can be constructed using circuit simulation software (such as LTspice), including the LC compensation network of the primary and secondary sides, the equivalent circuit of the coupling mechanism, and the load. Simulate and record the target output power as P out , and record the output power P sim .

[0127] Compare P sim and P out , if P sim ≠P out , then the parameters need to be adjusted. The adjustment can involve the coupling mechanism dimensions or the value of the compensation element.

[0128] In the embodiment of the present application, if P sim >P outι It may be necessary to increase the plate spacing g or reduce the compensation capacitors C1, C2. sim <P out , it may be necessary to reduce the plate spacing g or increase the compensation capacitors C1, C2.

[0129] Continue to iterate and adjust the parameters until P sim ≈P out And the system efficiency and frequency response meet the design requirements. Once the simulation results are consistent with the output requirements and the system performance meets all design criteria, the parameter design process is completed.

[0130] In summary, the present invention proposes a double-helix coupling mechanism type unmanned aerial vehicle wireless charging system and a parameter design method, which realizes more efficient wireless energy transmission by accurately calculating and optimizing the parameters of each component. The design method takes into account factors such as output load, system operating frequency, coupling capacitance and equivalent capacitance value, ensuring the stability and charging efficiency of the system under different working conditions. At the same time, through repeated iterations and adjustments by circuit simulation software, the output requirements can be accurately matched, improving the accuracy and practicality of the design. In addition, the double-helix coupling mechanism design of the present invention enhances the coupling effect between the transmitting end and the receiving end, reduces the energy loss during the transmission process, and is particularly suitable for unmanned aerial vehicle equipment with limited size. Moreover, the design method is highly versatile and can adapt to wireless charging systems with different power requirements and unmanned aerial vehicle sizes, and has wide applicability and promotion value.

[0131] The above-mentioned unit modules may be embedded in or independent of a processor in a computer device in the form of hardware, or may be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to the above-mentioned modules.

[0132] This embodiment also provides a computer device, which may be a terminal, and its internal structure diagram may be as shown in FIG. Figure 8 As shown. The computer device includes a processor, a memory, a communication interface, a display screen and an input device connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be achieved through WIFI, an operator network, NFC (near field communication) or other technologies. When the computer program is executed by the processor, a parameter design method for a double-helix coupling mechanism type unmanned aerial vehicle wireless charging system is implemented. The display screen of the computer device can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covered on the display screen, or a key, trackball or touchpad set on the computer device shell, or an external keyboard, touchpad or mouse.

[0133] This embodiment further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the following steps are implemented:

[0134] Determine the system output power and system operating frequency according to the output load;

[0135] Determine the size parameters of the coupling mechanism according to the power requirements and the size of the drone, and use simulation analysis software to obtain the coupling capacitance between each plate and calculate the equivalent capacitance value;

[0136] The initial value of the inductor is calculated based on the system parameters obtained by simulation, and the values ​​of the primary compensation capacitor C1, the secondary compensation capacitor C2, the primary compensation inductor L1 and the secondary compensation inductor L2 are calculated based on the equivalent circuit and the resonance condition;

[0137] According to the above parameters, use circuit simulation software to simulate and obtain simulation output, and judge whether the simulation output is consistent with the output requirement. If not, change the parameters and simulate again until the simulation output is consistent with the output requirement, and the parameter design is completed.

[0138] Example 2

[0139] Reference Figure 5-Figure 7 , which is an embodiment of the present invention, provides a double-helix coupling mechanism type UAV wireless charging system and a parameter design method. In order to verify the beneficial effects of the present invention, scientific demonstration is carried out through experiments.

[0140] In this embodiment, the first emitter plate P1, the second emitter plate P2, the first receiving plate P3 and the second receiving plate P4 are all provided with 8 turns and a spiral structure with a thickness of 1 mm. The maximum diameter of the plate is 639 mm.

[0141] System simulation: The system circuit parameters shown in Table 1 are obtained through the above design method. Figure 5 The figure shows the electric field distribution diagram of the coupling mechanism simulated by Ansoft Maxwell, and the coupling capacitance values ​​of each electrode in the double helix coupling mechanism are shown in Table 2.

[0142] Table 1 System parameters

[0143]

[0144] Table 2 Coupling capacitance value table

[0145]

[0146]

[0147] According to Table 1 and Table 2, a circuit simulation model is constructed and simulated. Figure 6 It is the voltage and current simulation waveform after the inverter output in the system. When the UAV is in working state, the voltage phase of the inverter output is slightly ahead of the current phase, which is conducive to the inverter working in the zero voltage switching state.

[0148] Figure 7 The output current and voltage simulation waveform of the system is as follows: the output voltage at the load end is 104.1V, the output current is 1.3A, the output power is 135.3W, and the efficiency is 87.08%.

[0149] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

[0150] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of complete hardware embodiments, complete software embodiments, or embodiments in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code. The scheme in the embodiments of the present application can be implemented in various computer languages, for example, object-oriented programming language Java and literal scripting language JavaScript, etc.

[0151] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0152] These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0153] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0154] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0155] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A double-helix coupling mechanism type unmanned aerial vehicle wireless charging system, characterized in that: include: A primary transmission circuit, a secondary transmission circuit and a double helix coupling mechanism; The double helix coupling mechanism comprises a transmitting end and a receiving end; The transmitting end includes a first emitter plate P1 and a second emitter plate P2; The receiving end includes a first receiving electrode plate P3 and a second receiving electrode plate P4.

2. The double-helix coupling mechanism type unmanned aerial vehicle wireless charging system as claimed in claim 1, characterized in that: The double helix coupling mechanism also includes: The first emitter plate P1, the second emitter plate P2, the first receiver plate P3 and the second receiver plate P4 are all planar spiral plates; The first emitter plate P1 and the second emitter plate P2 are mutually nested; The first receiving electrode plate P3 and the second receiving electrode plate P4 are mutually nested; The first emitter plate P1 and the second emitter plate P2 are provided with a dielectric plate P d ; When the transmitting end is coupled with the receiving end, the first transmitting electrode plate P1 is arranged opposite to the second receiving electrode plate P4, and the second transmitting electrode plate P2 is arranged opposite to the first receiving electrode plate P3.

3. The double-helix coupling mechanism type unmanned aerial vehicle wireless charging system as claimed in claim 2, characterized in that: Also includes: The primary transmission circuit includes a DC power supply V connected in sequence d , an inverter circuit and a primary resonance compensation circuit, wherein the output end of the primary resonance compensation circuit is connected to the first emitter plate P1 and the second emitter plate P2; The secondary transmission circuit includes a secondary resonance compensation circuit, a secondary rectification and filtering circuit and a load R connected in sequence. L The input end of the secondary side resonance compensation circuit is connected to the first receiving electrode plate P3 and the second receiving electrode plate P4.

4. The double-helix coupling mechanism type unmanned aerial vehicle wireless charging system as claimed in claim 3, characterized in that: Also includes: The primary side resonance compensation circuit and the secondary side compensation circuit are symmetrically arranged LC compensation network structures; The primary resonance compensation circuit includes a primary compensation capacitor C1 and a primary compensation inductor L1, and the secondary compensation circuit includes a secondary compensation capacitor C2 and a secondary compensation inductor L2.

5. A method for designing parameters of a double-helix coupling mechanism type unmanned aerial vehicle wireless charging system according to claim 1, characterized in that: include: Determine the system output power and system operating frequency according to the output load; Determine the size parameters of the coupling mechanism according to the power requirements and the size of the drone, and use simulation analysis software to obtain the coupling capacitance between each plate and calculate the equivalent capacitance value; The initial value of the inductor is calculated based on the system parameters obtained by simulation, and the values ​​of the primary compensation capacitor C1, the secondary compensation capacitor C2, the primary compensation inductor L1 and the secondary compensation inductor L2 are calculated based on the equivalent circuit and the resonance condition; According to the above parameters, use circuit simulation software to simulate and obtain simulation output, and judge whether the simulation output is consistent with the output requirement. If not, change the parameters and simulate again until the simulation output is consistent with the output requirement, and the parameter design is completed.

6. The method for designing parameters of a double-helix coupling mechanism type unmanned aerial vehicle wireless charging system as claimed in claim 5, characterized in that: The coupling capacitance between the plates and calculating the equivalent capacitance value include: The equivalent capacitance C between the first emitter plate P1 and the first receiver plate P3 13 ; And the equivalent capacitance C between the first emitter plate P1 and the second receiver plate P4 14 ; And the equivalent capacitance C between the second emitter plate P2 and the first receiver plate P3 23 ; and the equivalent capacitance C between the second emitter plate P2 and the second receiver plate P4 24 ; And the equivalent capacitance C between the first emitter plate P1 and the second emitter plate P2 12 ; And the equivalent capacitance C between the first receiving plate P3 and the second receiving plate P4 34 .

7. The method for designing parameters of a double-helix coupling mechanism type unmanned aerial vehicle wireless charging system as claimed in claim 6, characterized in that: Also includes: The system output power P out for: Among them, R L represents the load, V1 is the inverter output voltage of the primary side, and ω is the angular frequency of the system.

8. The method for designing parameters of a double-helix coupling mechanism type unmanned aerial vehicle wireless charging system as claimed in claim 7, characterized in that: Also includes: The system resonance condition is: Wherein, C1 is the capacitance value of the primary compensation capacitor C1, L1 is the capacitance value of the primary compensation inductor L1, C2 is the capacitance value of the secondary compensation capacitor C2, and L2 is the capacitance value of the secondary compensation inductor L2.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 5 to 8 are implemented.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 5 to 8 are implemented.

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