Flexible Circuit Board Wireless Charging and Data Transmission Integration Method

Abstract

The present invention relates to the field of electronic engineering and discloses an integrated method for wireless charging and data transmission of a flexible circuit board, including: analyzing the application requirements of the flexible circuit board, determining the coil material of the flexible circuit board, and calculating the high-frequency loss of the coil material; constructing a multi-band compatible coil of the flexible circuit board, defining the band LC matching network of the multi-band compatible coil, and constructing a wireless charging module of the flexible circuit board; defining a band selection algorithm for the wireless charging module, calculating the band selection efficiency of the wireless charging module, optimizing the wireless charging module to obtain an optimized wireless charging module; defining a data transmission protocol for the flexible circuit board, constructing a differential pair line of the flexible circuit board, and constructing a data transmission module of the flexible circuit board; integrating the optimized wireless charging module and the data transmission module into a multi-layer layout of a flexible substrate material to obtain an integrated multi-layer flexible circuit board. The present invention can improve the flexibility and efficiency of charging and data transmission.

Description

Technical Field

[0001] The present invention relates to an integrated method for wireless charging and data transmission of a flexible circuit board, belonging to the field of electronic engineering. Background Art

[0002] The integration of wireless charging and data transmission on a flexible circuit board refers to integrating wireless charging technology and data transmission technology onto the same flexible printed circuit (FPC) board to achieve the functions of simultaneously powering an electronic device and transmitting data. The purpose of integrating wireless charging and data transmission on a flexible circuit board is to provide a more flexible, compact, and efficient solution, especially in application scenarios with limited space, the need for flexible wiring, or dynamic bending, such as wearable devices, smartphones, medical implant devices, etc.

[0003] In traditional integrated methods for wireless charging and data transmission on a flexible circuit board, the wireless charging coil and the data transmission antenna are usually designed in different areas of the circuit board, and then the functions are realized through independent electronic components and circuits. This method often results in a larger circuit board volume, heavier weight, and low integration, making it difficult to meet the design requirements of complex or miniaturized electronic products. Summary of the Invention

[0004] The present invention provides an integrated method for wireless charging and data transmission of a flexible circuit board, and its main purpose is to improve the flexibility and efficiency of charging and data transmission.

[0005] To achieve the above object, an integrated method for wireless charging and data transmission of a flexible circuit board provided by the present invention includes:

[0006] Determine the application scenario of the flexible circuit board. According to the application scenario, analyze the application requirements of the flexible circuit board, where the application requirements include the wireless charging frequency band and the data transmission rate. Based on the wireless charging frequency band, determine the coil material of the flexible circuit board and calculate the high-frequency loss of the coil material;

[0007] Based on the high-frequency loss and the coil material, construct a multi-band compatible coil for the flexible circuit board, define the band LC matching network of the multi-band compatible coil, and based on the band LC matching network and the multi-band compatible coil, construct the wireless charging module of the flexible circuit board;

[0008] Define the band selection algorithm of the wireless charging module. Based on the band selection algorithm, calculate the band selection efficiency of the wireless charging module, and optimize the wireless charging module through the band selection efficiency to obtain an optimized wireless charging module;

[0009] Define the data transmission protocol of the flexible circuit board based on the data transmission rate, and construct the differential pair lines of the flexible circuit board based on the data transmission protocol. Through the differential pair lines, construct the data transmission module of the flexible circuit board;

[0010] Define the flexible substrate material of the flexible circuit board and the multi-layer layout of the flexible substrate material. Among them, the multi-layer layout includes a bottom layer, an intermediate layer, and a top layer. Determine the interconnecting holes of the multi-layer layout, and integrate the optimized wireless charging module and the data transmission module into the multi-layer layout of the flexible substrate material based on the interconnecting holes to obtain an integrated multi-layer flexible circuit board.

[0011] Optionally, analyzing the application requirements of the flexible circuit board according to the application scenario includes:

[0012] Analyze the application scenario characteristics of the application scenario;

[0013] According to the application scenario characteristics, analyze the charging influencing factors and user frequency band requirements of the application scenario;

[0014] Based on the charging influencing factors and user frequency band requirements, determine the wireless charging frequency band of the flexible circuit board;

[0015] According to the application scenario characteristics, analyze the data transmission type, data transmission distance, and data transmission obstacles of the application scenario;

[0016] Define the user real-time requirement of the corresponding scenario user of the application scenario;

[0017] Based on the data transmission type, the data transmission distance, the data transmission obstacles, and the user real-time requirement, determine the data transmission rate of the flexible circuit board;

[0018] Define the application requirements of the flexible circuit board according to the wireless charging frequency band and the data transmission rate.

[0019] Optionally, calculating the high-frequency loss of the coil material includes:

[0020] Construct a coil loss test environment for the coil material;

[0021] According to the coil loss test environment, analyze the material resistivity and material permeability of the coil material;

[0022] In the coil loss test environment, construct a simulated coil of the coil material;

[0023] Based on the material resistivity, calculate the DC resistance of the simulated coil;

[0024] Calculate the DC resistance loss of the simulated coil through the DC resistance;

[0025] Determine the electrical parameters of the simulated coil in the coil loss test environment;

[0026] Calculate the skin effect loss and proximity effect loss of the simulated coil based on the electrical parameters and the material permeability;

[0027] Calculate the high-frequency loss of the simulated coil through the DC resistance loss, the skin effect loss, and the proximity effect loss using the following formula:

[0028]

[0029] where, represents the high-frequency loss of the simulated coil, represents the DC resistance loss of the simulated coil, represents the DC current of the simulated coil, represents the skin effect loss of the simulated coil, represents the proximity effect loss of the simulated coil.

[0030] Optionally, the calculating the skin effect loss and proximity effect loss of the simulated coil based on the electrical parameters and the material permeability includes:

[0031] Determine the operating frequency, magnetic field strength, and vacuum permeability of the simulated coil according to the electrical parameters;

[0032] Calculate the skin effect loss of the simulated coil based on the material permeability and the operating frequency using the following formula:

[0033]

[0034] where, represents the skin effect loss of the simulated coil, represents the DC resistance of the simulated coil, represents pi, represents the operating frequency of the simulated coil, represents the material permeability of the simulated coil, represents the material resistivity of the simulated coil;

[0035] Calculate the proximity effect loss of the simulated coil through the magnetic field strength and the vacuum permeability using the following formula:

[0036]

[0037] where, represents the proximity effect loss of the simulated coil, represents the coil geometry coefficient of the simulated coil, represents the magnetic field strength of the simulated coil, represents the vacuum permeability of the simulated coil, represents the coil length of the simulated coil.

[0038] Optionally, constructing the multi - band compatible coil of the flexible circuit board through the high - frequency loss and the coil material includes:

[0039] Defining the multi - band coil structure of the flexible circuit board according to the high - frequency loss and the coil material;

[0040] Calculating the resonant frequency of the multi - band coil structure;

[0041] Analyzing the optimized coil parameters of the multi - band coil structure based on the resonant frequency;

[0042] Constructing the multi - band compatible coil of the flexible circuit board according to the optimized coil parameters and the multi - band coil structure.

[0043] Optionally, defining the band LC matching network of the multi - band compatible coil includes:

[0044] Analyzing the self - inductance and mutual inductance of the coil of the multi - band compatible coil;

[0045] Establishing an equivalent circuit model of the multi - band compatible coil according to the self - inductance and mutual inductance of the coil;

[0046] Determining the passive components of the multi - band compatible coil based on the equivalent circuit model;

[0047] Constructing an initial band LC matching network of the multi - band compatible coil using the equivalent circuit model and the passive components;

[0048] Calculating the network band performance of the initial band LC matching network;

[0049] When the network band performance meets the preset network band performance threshold, using the initial band LC matching network as the band LC matching network of the multi - band compatible coil.

[0050] Optionally, defining the band selection algorithm of the wireless charging module includes:

[0051] Defining the band selection parameters of the wireless charging module;

[0052] Analyzing the band selection relationship of the band selection parameters;

[0053] Determine the weight of the frequency band selection parameter for the frequency band selection parameter according to the frequency band selection relationship;

[0054] Based on the frequency band selection parameter and the weight of the frequency band selection parameter, construct the frequency band selection algorithm of the wireless charging module by using the following formula, where the frequency band selection algorithm includes:

[0055]

[0056] where, represents the frequency band score of the wireless charging module, represents the charging speed in the frequency band selection parameter, represents the weight of the frequency band selection parameter for the charging speed, represents the interference level in the frequency band selection parameter, represents the weight of the frequency band selection parameter for the interference level, represents the conditional restriction in the frequency band selection parameter, represents the weight of the frequency band selection parameter for the conditional restriction, represents the device compatibility in the frequency band selection parameter, represents the weight of the frequency band selection parameter for the device compatibility.

[0057] Optionally, constructing the differential pair lines of the flexible circuit board based on the data transmission protocol includes:

[0058] Determine the differential line index of the flexible circuit board according to the data transmission protocol;

[0059] Define the differential signal standard of the flexible circuit board;

[0060] Determine the differential pair position and differential pair routing of the flexible circuit board according to the differential signal standard and the differential line index;

[0061] Calculate the differential pair characteristic impedance of the flexible circuit board according to the differential pair position and differential pair routing;

[0062] Construct the differential pair layout of the flexible circuit board based on the differential pair characteristic impedance;

[0063] Determine the differential pair lines of the flexible circuit board through the differential pair layout.

[0064] Optionally, integrating the optimized wireless charging module and the data transmission module into the multi-layer layout of the flexible substrate material based on the interconnecting holes to obtain an integrated multi-layer flexible circuit board includes:

[0065] Construct the initial flexible circuit board of the flexible substrate material;

[0066] Determine the interconnection hole positions of the interconnection holes in the multi-layer layout;

[0067] Based on the interconnection hole positions, establish a multi-layer circuit diagram of the optimized wireless charging module and the data transmission module in the multi-layer layout;

[0068] According to the multi-layer circuit diagram, construct the PCB layout of the initial flexible circuit board;

[0069] Based on the PCB layout, establish the integrated multi-layer flexible circuit board of the initial flexible circuit board.

[0070] To solve the above problems, the present invention also provides a flexible circuit board wireless charging and data transmission integration system, the system includes:

[0071] A high-frequency loss analysis module, configured to determine the application scenario of the flexible circuit board, analyze the application requirements of the flexible circuit board according to the application scenario, wherein the application requirements include a wireless charging frequency band and a data transmission rate, and based on the wireless charging frequency band, determine the coil material of the flexible circuit board and calculate the high-frequency loss of the coil material;

[0072] A wireless charging module construction module, configured to construct a multi-band compatible coil of the flexible circuit board through the high-frequency loss and the coil material, define a frequency band LC matching network of the multi-band compatible coil, and construct a wireless charging module of the flexible circuit board based on the frequency band LC matching network and the multi-band compatible coil;

[0073] A wireless charging module optimization module, configured to define a frequency band selection algorithm of the wireless charging module, calculate the frequency band selection efficiency of the wireless charging module based on the frequency band selection algorithm, and optimize the wireless charging module through the frequency band selection efficiency to obtain an optimized wireless charging module;

[0074] A data transmission module construction module, configured to define a data transmission protocol of the flexible circuit board through the data transmission rate, construct a differential pair line of the flexible circuit board based on the data transmission protocol, and construct a data transmission module of the flexible circuit board through the differential pair line;

[0075] A flexible circuit board integration module, configured to define a flexible substrate material of the flexible circuit board, define a multi-layer layout of the flexible substrate material, wherein the multi-layer layout includes a bottom layer, a middle layer, and a top layer, determine the interconnection holes of the multi-layer layout, and integrate the optimized wireless charging module and the data transmission module into the multi-layer layout of the flexible substrate material based on the interconnection holes to obtain an integrated multi-layer flexible circuit board.

[0076] Compared with the problems described in the background art, firstly, through the requirements analysis for specific application scenarios, the precise matching of the wireless charging frequency band and data transmission rate is ensured, thereby improving the overall performance and user experience of the device; secondly, based on the high-frequency loss calculation and coil material selection, the constructed multi-band compatible coil can adapt to different wireless charging standards, improving the flexibility and compatibility of charging; in addition, by defining the band LC matching network and band selection algorithm, the efficiency of the wireless charging module is optimized, reducing energy loss and increasing the charging speed; in terms of data transmission, the defined data transmission protocol and the constructed differential pair lines ensure high-speed and stable data transmission, meeting the requirements of modern electronic devices for big data processing; finally, the optimized wireless charging module and data transmission module are integrated into the flexible substrate material with a multi-layer layout, and the obtained integrated multi-layer flexible circuit board not only maintains flexibility and adaptability, but also realizes the efficient use of space and cost reduction, providing strong technical support for fields such as wearable devices, portable electronic products, and Internet of Things devices, and promoting the innovation and development of electronic products. Therefore, the present invention improves the flexibility and efficiency of charging and data transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0077] Figure 1 FIG. is a schematic flow chart of a method for integrating wireless charging and data transmission of a flexible circuit board provided by an embodiment of the present invention;

[0078] Figure 2 FIG. is a schematic diagram of modules of a system for integrating wireless charging and data transmission of a flexible circuit board provided by an embodiment of the present invention.

[0079] The implementation, functional features, and advantages of the present invention will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0080] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0081] An embodiment of the present application provides a method for integrating wireless charging and data transmission of a flexible circuit board. The execution subject of the method for integrating wireless charging and data transmission of the flexible circuit board includes, but is not limited to, at least one of electronic devices such as a server, a terminal, etc. that can be configured to execute the method provided by the embodiment of the present application. In other words, the method for integrating wireless charging and data transmission of the flexible circuit board can be executed by software or hardware installed on a terminal device or a server device. The server includes, but is not limited to: a single server, a server cluster, a cloud server, or a cloud server cluster, etc.

[0082] Embodiment 1:

[0083] Refer to Figure 1As shown in the figure, it is a schematic flowchart of a method for integrating wireless charging and data transmission of a flexible circuit board provided by an embodiment of the present invention. In this embodiment, the method for integrating wireless charging and data transmission of the flexible circuit board includes:

[0084] S1. Determine the application scenario of the flexible circuit board. According to the application scenario, analyze the application requirements of the flexible circuit board. Among them, the application requirements include the wireless charging frequency band and the data transmission rate. Based on the wireless charging frequency band, determine the coil material of the flexible circuit board and calculate the high-frequency loss of the coil material.

[0085] It should be explained that the application scenario refers to the specific environment or conditions where the flexible circuit board will be actually used and function. These scenarios may include scenarios such as wearable technology, portable electronic devices, medical devices, Internet of Things devices, automobiles, and aviation.

[0086] The present invention analyzes the application requirements of the flexible circuit board according to the application scenario, where the application requirements include the wireless charging frequency band and the data transmission rate, which can ensure that the design of the flexible circuit board meets the wireless charging frequency band and data transmission rate requirements in a specific application scenario.

[0087] Specifically, the analysis of the application requirements of the flexible circuit board according to the application scenario includes:

[0088] Analyze the application scenario characteristics of the application scenario;

[0089] According to the application scenario characteristics, analyze the charging influencing factors and user frequency band requirements of the application scenario;

[0090] Based on the charging influencing factors and user frequency band requirements, determine the wireless charging frequency band of the flexible circuit board;

[0091] According to the application scenario characteristics, analyze the data transmission type, data transmission distance, and data transmission obstacles of the application scenario;

[0092] Define the user real-time requirements of the corresponding scenario users of the application scenario;

[0093] Based on the data transmission type, the data transmission distance, the data transmission obstacles, and the user real-time requirements, determine the data transmission rate of the flexible circuit board;

[0094] According to the wireless charging frequency band and the data transmission rate, define the application requirements of the flexible circuit board.

[0095] Among them, the application scenario features refer to the key characteristics and conditions in a specific application environment. The charging influencing factors refer to various factors that may affect the charging efficiency, safety, and reliability during wireless charging. The user frequency band requirements refer to the specific requirements of users or the market for the wireless charging frequency band. The wireless charging frequency band refers to the specific radio frequency range used by wireless charging technology. The data transmission type refers to the types of data transmitted through the flexible circuit board, such as text, images, audio, video, or other sensor data. The data transmission distance refers to the maximum effective distance of data from the sending end to the receiving end. The data transmission obstacles refer to objects or conditions that may hinder or interfere with data transmission, such as metal objects, liquids, walls, or other electronic devices. The user real-time requirements refer to the expectations of users for the data transmission speed and response time. The data transmission rate refers to the rate of data transmission by the circuit board. The application requirements refer to the specific technical specifications and performance objectives that the flexible circuit board must meet based on all the above factors. These requirements include, but are not limited to, the efficiency, compatibility, data transmission rate, stability, and safety of wireless charging.

[0096] Based on the wireless charging frequency band, determining the coil material of the flexible circuit board can determine the flexible circuit board coil material suitable for a specific wireless charging frequency band. Among them, the coil material refers to those conductive materials used to manufacture coils in a wireless charging system.

[0097] The present invention calculates the high-frequency loss of the coil material, and can select a material with less loss at high frequencies to construct the coil, thereby improving the wireless charging efficiency of the flexible circuit board.

[0098] Specifically, the calculation of the high-frequency loss of the coil material includes:

[0099] Construct a coil loss test environment for the coil material;

[0100] According to the coil loss test environment, analyze the material resistivity and material permeability of the coil material;

[0101] In the coil loss test environment, construct a simulated coil of the coil material;

[0102] Based on the material resistivity, calculate the DC resistance of the simulated coil;

[0103] Through the DC resistance, calculate the DC resistance loss of the simulated coil;

[0104] Determine the electrical parameters of the simulated coil in the coil loss test environment;

[0105] Based on the electrical parameters and the material permeability, calculate the skin effect loss and proximity effect loss of the simulated coil;

[0106] Through the DC resistance loss, the skin effect loss, and the proximity effect loss, calculate the high-frequency loss of the simulated coil using the following formula:

[0107]

[0108] where, represents the high-frequency loss of the simulated coil, represents the DC resistance loss of the simulated coil, represents the DC current of the simulated coil, represents the skin effect loss of the simulated coil, represents the proximity effect loss of the simulated coil.

[0109] Among them, the coil loss test environment refers to the environment used to evaluate the loss of the coil under specific frequency and current conditions. The material resistivity represents the resistance of the material per unit length and unit cross-sectional area. The material permeability represents the response ability of the material to the magnetic field. The simulated coil refers to the coil designed according to the actual application and used to simulate the actual working conditions in the test environment. The DC resistance refers to the resistance of the coil material under DC conditions. The DC resistance loss refers to the heat loss generated due to the DC current passing through the coil resistance. The electrical parameters refer to the parameters of the simulated coil in the coil loss test environment, including parameters such as inductance, magnetic field strength, and vacuum permeability. The skin effect loss refers to the additional loss generated due to the high-frequency current gathering on the surface of the conductor. The proximity effect loss refers to the loss generated due to the magnetic field interaction between adjacent wires or layers in the coil. The DC current refers to the DC current passing through the coil. The high-frequency loss refers to the total loss of the coil under high-frequency operating conditions, including DC resistance loss, skin effect loss, and proximity effect loss.

[0110] Further, calculating the skin effect loss and the proximity effect loss of the simulated coil based on the electrical parameters and the material permeability includes:

[0111] Determine the operating frequency, magnetic field strength, and vacuum permeability of the simulated coil according to the electrical parameters;

[0112] Based on the material permeability and the operating frequency, calculate the skin effect loss of the simulated coil using the following formula:

[0113]

[0114] where, represents the skin effect loss of the simulated coil, represents the DC resistance of the simulated coil, represents the pi, represents the operating frequency of the simulated coil, represents the magnetic permeability of the material of the simulated coil, represents the resistivity of the material of the simulated coil;

[0115] Through the magnetic field strength and the permeability of free space, the proximity effect loss of the simulated coil is calculated using the following formula:

[0116]

[0117] where, represents the proximity effect loss of the simulated coil, represents the coil geometry factor of the simulated coil, represents the magnetic field strength of the simulated coil, represents the permeability of free space of the simulated coil, represents the coil length of the simulated coil.

[0118] wherein, the operating frequency refers to the frequency when the simulated coil is working, the magnetic field strength refers to the magnetic field strength generated by the coil, the permeability of free space refers to the magnetic permeability of the magnetic field in vacuum, the coil geometry factor refers to a coefficient related to the coil shape and winding method, and the coil length refers to the total length of the coil.

[0119] S2. Construct a multi-band compatible coil of the flexible circuit board through the high-frequency loss and the coil material, define the band LC matching network of the multi-band compatible coil, and construct a wireless charging module of the flexible circuit board based on the band LC matching network and the multi-band compatible coil.

[0120] It should be explained that the multi-band compatible coil refers to a coil designed to work effectively at two or more wireless charging frequencies or standards.

[0121] Specifically, the constructing of the multi-band compatible coil of the flexible circuit board through the high-frequency loss and the coil material includes:

[0122] Define the multi-band coil structure of the flexible circuit board according to the high-frequency loss and the coil material;

[0123] Calculate the resonance frequency of the multi-band coil structure;

[0124] Analyze the optimized coil parameters of the multi-band coil structure based on the resonance frequency;

[0125] Construct the multi-band compatible coil of the flexible circuit board according to the optimized coil parameters and the multi-band coil structure.

[0126] Among them, the multi-band coil structure refers to a specially designed coil that can effectively transfer energy at multiple frequencies. The resonant frequency refers to the natural oscillation frequency of the LC circuit composed of the coil and its accompanying capacitor. The optimized coil parameters refer to the parameters of the coil that need to be adjusted, such as inductance, capacitance, wire diameter, number of turns, gap, etc., in order to achieve the best performance at multiple frequencies. The multi-band compatible coil refers to a coil that has been optimized to work at multiple wireless charging standards or frequencies.

[0127] Optionally, the resonant frequency of the multi-band coil structure can be analyzed by multi-physics simulation software.

[0128] The present invention defines that the band LC matching network of the multi-band compatible coil can define and implement a band LC matching network of the multi-band compatible coil to support the integration requirements of wireless charging.

[0129] Specifically, the defining of the band LC matching network of the multi-band compatible coil includes:

[0130] Analyze the self-inductance and mutual inductance of the multi-band compatible coil;

[0131] Based on the self-inductance and mutual inductance of the coil, establish an equivalent circuit model of the multi-band compatible coil;

[0132] Based on the equivalent circuit model, determine the passive components of the multi-band compatible coil;

[0133] Utilize the equivalent circuit model and the passive components to construct an initial band LC matching network of the multi-band compatible coil;

[0134] Calculate the network band performance of the initial band LC matching network;

[0135] When the network band performance meets the preset network band performance threshold, use the initial band LC matching network as the band LC matching network of the multi-band compatible coil.

[0136] Among them, the self - inductance of the coil refers to the electromagnetic induction ability of the coil itself. The mutual inductance of the coil refers to the electromagnetic induction coupling between two or more coils, that is, the ability of the magnetic flux generated by the current in one coil to induce voltage in another coil. The equivalent circuit model refers to a simplified circuit representation used to simulate the electrical behavior of the coil. The passive components refer to the passive components in the circuit, such as inductors, capacitors, and resistors, which do not generate energy but can store, release, or control the energy flow. The initial - frequency - band LC matching network refers to an LC network based on preliminary design and calculation. The network - frequency - band performance refers to the performance of the LC matching network within a specific frequency band, including parameters such as bandwidth, efficiency, voltage standing - wave ratio (VSWR), and insertion loss. The network - frequency - band performance threshold refers to the preset performance standard used to evaluate whether the LC matching network meets the design requirements. The frequency - band LC matching network refers to the LC network of the finally determined multi - band compatible coil, which provides optimized impedance matching within all target frequency bands to ensure efficient energy transmission.

[0137] Optionally, establishing the equivalent circuit model of the multi - band compatible coil according to the self - inductance and mutual inductance of the coil can be achieved by using electromagnetic field simulation software, such as ANSYS Maxwell, CST Studio Suite, COMSOL Multiphysics, etc., which can simulate the three - dimensional electromagnetic field distribution of the coil for establishment.

[0138] Based on the frequency - band LC matching network and the multi - band compatible coil, the wireless charging module of the flexible circuit board of the present invention can construct an efficient, reliable, and multi - band - compatible wireless charging module for flexible circuit boards, which is applicable to various portable electronic devices and wearable technologies. Among them, the wireless charging module refers to the circuit module designed for the frequency - band LC matching network and the multi - band compatible coil and is used for integration into the circuit board.

[0139] S3. Define the frequency - band selection algorithm of the wireless charging module. Based on the frequency - band selection algorithm, calculate the frequency - band selection efficiency of the wireless charging module. Through the frequency - band selection efficiency, optimize the wireless charging module to obtain an optimized wireless charging module.

[0140] The present invention defines the frequency - band selection algorithm of the wireless charging module, which can define and calculate the frequency - band selection efficiency of the wireless charging module, thereby ensuring that the module can automatically select the optimal frequency band for efficient charging under different environments and conditions.

[0141] Specifically, defining the frequency - band selection algorithm of the wireless charging module includes:

[0142] Define the frequency - band selection parameters of the wireless charging module;

[0143] Analyze the frequency band selection relationship of the frequency band selection parameters;

[0144] Determine the weight of the frequency band selection parameters of the frequency band selection parameters according to the frequency band selection relationship;

[0145] Based on the frequency band selection parameters and the weight of the frequency band selection parameters, use the following formula to construct the frequency band selection algorithm of the wireless charging module, where the frequency band selection algorithm includes:

[0146]

[0147] Wherein, represents the frequency band score of the wireless charging module, represents the charging speed in the frequency band selection parameters, represents the weight of the frequency band selection parameter of the charging speed, represents the interference level in the frequency band selection parameters, represents the weight of the frequency band selection parameter of the interference level, represents the conditional restriction in the frequency band selection parameters, represents the weight of the frequency band selection parameter of the conditional restriction, represents the device compatibility in the frequency band selection parameters, represents the weight of the frequency band selection parameter of the device compatibility.

[0148] Among them, the charging speed refers to the charging rate of the wireless charging module at a specific frequency band, the interference level refers to the degree of electromagnetic interference that the wireless charging module may encounter at a specific frequency band, the conditional restriction refers to the technical restriction of a specific frequency band in a specific region or application environment. Exemplarily, if there is a restriction, the conditional restriction is 1, if there is no restriction, the conditional restriction is 0, the device compatibility refers to the compatibility degree between the wireless charging module and the receiving device at a specific frequency band, the frequency band selection relationship refers to the relationship between the frequency band selection parameters and the frequency band selection, the weight of the frequency band selection parameter refers to the importance of the frequency band selection parameter to the frequency band selection, the weight value should be between 0 and 1, and the sum of all weights should be equal to 1, the frequency band score refers to the quantization result obtained by weighted calculation of each frequency band selection parameter of the wireless charging module, and the frequency band selection algorithm refers to a set of calculation methods or processes for selecting the best wireless charging frequency band.

[0149] The present invention optimizes the wireless charging module by calculating the frequency band selection efficiency of the wireless charging module. Through the frequency band selection efficiency, the optimized wireless charging module can be obtained, which can ensure that the wireless charging module can efficiently and accurately select the best frequency band in actual applications, thereby improving the charging performance and user experience. Among them, the optimized wireless charging module refers to a module that improves the performance, efficiency and reliability of the wireless charging system through a series of technical improvements and adjustments.

[0150] S4. Define the data transmission protocol of the flexible circuit board based on the data transmission rate, and based on the data transmission protocol, construct the differential pair lines of the flexible circuit board. Through the differential pair lines, construct the data transmission module of the flexible circuit board.

[0151] It should be explained that the data transmission protocol refers to a set of rules and standards that define the way, format, and timing of data transmission between communication entities.

[0152] Based on the data transmission protocol of the present invention, constructing the differential pair lines of the flexible circuit board can construct differential pair lines of the flexible circuit board that meet the requirements of the data transmission protocol, ensuring the reliability and efficiency of high-speed data transmission.

[0153] Specifically, constructing the differential pair lines of the flexible circuit board based on the data transmission protocol includes:

[0154] Determine the differential line indexes of the flexible circuit board according to the data transmission protocol;

[0155] Define the differential signal standard of the flexible circuit board;

[0156] Determine the differential pair positions and differential pair routing of the flexible circuit board according to the differential signal standard and the differential line indexes;

[0157] Calculate the differential pair characteristic impedance of the flexible circuit board according to the differential pair positions and differential pair routing;

[0158] Construct the differential pair layout of the flexible circuit board based on the differential pair characteristic impedance;

[0159] Determine the differential pair lines of the flexible circuit board through the differential pair layout.

[0160] Among them, the differential line indexes refer to a series of parameters used to evaluate the performance of differential lines. The differential signal standard refers to the electrical characteristics that define differential signal transmission, including parameters such as voltage level, current magnitude, and signal edge rate. The differential pair positions refer to the specific positions on the flexible circuit board. The differential pair routing refers to the path planning of the differential pair on the circuit board, including the line direction, bending radius, and obstacles to be avoided, etc. The differential pair characteristic impedance refers to the inherent impedance of the differential line. The differential pair layout refers to the process of actually drawing the differential pair on the circuit board, including the arrangement of lines, the design of the ground plane, the distribution of power and ground, etc. The differential pair lines refer to the differential signal transmission path finally realized on the flexible circuit board, which includes all physical and electrical characteristics of the differential pair.

[0161] Optionally, calculating the differential pair characteristic impedance of the flexible circuit board according to the differential pair position and differential pair routing can be calculated by a microstrip line model. The microstrip line model is an electrical model for analyzing and designing transmission lines.

[0162] Through the differential pair line, the data transmission module of the flexible circuit board of the present invention can be constructed to enable the data transmission module to achieve high-speed and reliable data communication. Among them, the data transmission module refers to the components designed and implemented on a flexible printed circuit (FPC), which is responsible for transmitting data signals between devices.

[0163] S5. Define the flexible substrate material of the flexible circuit board, define the multi-layer layout of the flexible substrate material, where the multi-layer layout includes a bottom layer, an intermediate layer, and a top layer, determine the interconnecting holes of the multi-layer layout, and based on the interconnecting holes, integrate the optimized wireless charging module and the data transmission module into the multi-layer layout of the flexible substrate material to obtain an integrated multi-layer flexible circuit board.

[0164] It should be explained that the flexible substrate material refers to the basic layer material used to manufacture a flexible printed circuit (FPC).

[0165] The present invention defines the multi-layer layout of the flexible substrate material, where the multi-layer layout includes a bottom layer, an intermediate layer, and a top layer, which can achieve complex electrical functions and higher component density while maintaining flexibility. Among them, the bottom layer refers to the bottommost layer of the integrated multi-layer flexible circuit board, usually the first conductive layer of the circuit, the intermediate layer refers to the layer between the bottom layer and the top layer, which can be a combination of multiple conductive layers and insulating layers, and the top layer is the topmost layer of the integrated multi-layer flexible circuit board, usually the last conductive layer of the circuit. The interconnecting holes refer to the holes that provide electrical connections between different layers of the circuit board.

[0166] Based on the interconnecting holes, the present invention integrates the optimized wireless charging module and the data transmission module into the multi-layer layout to obtain an integrated multi-layer flexible circuit board, which can successfully integrate the wireless charging circuit board module and the data transmission module into the integrated multi-layer flexible circuit board to obtain a fully functional integrated multi-layer flexible circuit board.

[0167] Specifically, integrating the optimized wireless charging module and the data transmission module into the multi-layer layout of the flexible substrate material based on the interconnecting holes to obtain an integrated multi-layer flexible circuit board includes:

[0168] Construct an initial flexible circuit board of the flexible substrate material;

[0169] Determine the interconnecting hole positions of the interconnecting holes in the multi-layer layout;

[0170] Based on the positions of the interconnection holes, establish a multi-layer circuit diagram of the optimized wireless charging module and the data transmission module in the multi-layer layout;

[0171] Construct the PCB layout of the initial flexible circuit board according to the multi-layer circuit diagram;

[0172] Based on the PCB layout, establish the integrated multi-layer flexible circuit board of the initial flexible circuit board.

[0173] Among them, the initial flexible circuit board refers to the basic circuit structure, which includes a flexible substrate material and conductive materials (usually copper foils) attached thereto. The positions of the interconnection holes refer to the specific positions of these holes on the circuit board. The multi-layer circuit diagram refers to a design diagram showing the circuit layouts of all layers in the multi-layer flexible circuit board, including signal layers, power supply layers, ground layers, and their connection relationships. The PCB layout refers to the physical implementation of the multi-layer circuit diagram. The integrated multi-layer flexible circuit board refers to the finally manufactured circuit board, which contains all the layers and functions defined in the design stage, such as the wireless charging module and the data transmission module.

[0174] Optionally, the establishment of the multi-layer circuit diagram of the optimized wireless charging module and the data transmission module in the multi-layer layout based on the positions of the interconnection holes can be drawn using EDA software (such as Altium Designer, Cadence, Mentor Graphics, etc.).

[0175] Compared with the problems described in the background art, firstly, through the requirements analysis for specific application scenarios, the precise matching of the wireless charging frequency band and the data transmission rate is ensured, thereby improving the overall performance and user experience of the device; secondly, based on the high-frequency loss calculation and coil material selection, the constructed multi-band compatible coil can adapt to different wireless charging standards, improving the flexibility and compatibility of charging; in addition, by defining the frequency band LC matching network and the frequency band selection algorithm, the efficiency of the wireless charging module is optimized, energy loss is reduced, and the charging speed is increased; in terms of data transmission, the defined data transmission protocol and the constructed differential pair lines ensure high-speed and stable data transmission, meeting the requirements of modern electronic devices for big data processing; finally, the optimized wireless charging module and data transmission module are integrated into the flexible substrate material with a multi-layer layout, and the obtained integrated multi-layer flexible circuit board not only maintains flexibility and adaptability, but also realizes the efficient use of space and cost reduction, providing strong technical support for fields such as wearable devices, portable electronic products, and Internet of Things devices, and promoting the innovation and development of electronic products. Therefore, the present invention improves the flexibility and efficiency of charging and data transmission.

[0176] Embodiment 2:

[0177] As shown Figure 2 in the figure, it is a functional module diagram of an integrated system for wireless charging and data transmission of a flexible circuit board according to the present invention.

[0178] The integrated system 200 for wireless charging and data transmission of a flexible circuit board according to the present invention can be installed in an electronic device. According to the functions to be achieved, the integrated system for wireless charging and data transmission of a flexible circuit board may include a high-frequency loss analysis module 201, a wireless charging module construction module 202, a wireless charging module optimization module 203, a data transmission module construction module 204, and a flexible circuit board integration module 205. The modules in the present invention may also be referred to as units, which refer to a series of computer program segments that can be executed by a processor of an electronic device and can complete fixed functions, and are stored in the memory of the electronic device.

[0179] In the embodiments of the present invention, the functions of each module / unit are as follows:

[0180] The high-frequency loss analysis module 201 is used to determine the application scenario of the flexible circuit board, analyze the application requirements of the flexible circuit board according to the application scenario, where the application requirements include the wireless charging frequency band and the data transmission rate, determine the coil material of the flexible circuit board based on the wireless charging frequency band, and calculate the high-frequency loss of the coil material;

[0181] The wireless charging module construction module 202 is used to construct a multi-band compatible coil of the flexible circuit board through the high-frequency loss and the coil material, define a frequency band LC matching network of the multi-band compatible coil, and construct a wireless charging module of the flexible circuit board based on the frequency band LC matching network and the multi-band compatible coil;

[0182] The wireless charging module optimization module 203 is used to define a frequency band selection algorithm for the wireless charging module, calculate the frequency band selection efficiency of the wireless charging module based on the frequency band selection algorithm, and optimize the wireless charging module through the frequency band selection efficiency to obtain an optimized wireless charging module;

[0183] The data transmission module construction module 204 is used to define a data transmission protocol for the flexible circuit board through the data transmission rate, construct a differential pair line of the flexible circuit board based on the data transmission protocol, and construct a data transmission module of the flexible circuit board through the differential pair line;

[0184] The flexible circuit board integration module 205 is used to define the flexible substrate material of the flexible circuit board, define the multi-layer layout of the flexible substrate material, where the multi-layer layout includes a bottom layer, an intermediate layer, and a top layer, determine the interconnecting holes of the multi-layer layout, and integrate the optimized wireless charging module and the data transmission module into the multi-layer layout of the flexible substrate material based on the interconnecting holes to obtain an integrated multi-layer flexible circuit.

[0185] Specifically, each module in the flexible circuit board wireless charging and data transmission integration system 200 in the embodiments of the present invention adopts the same technical means as the flexible circuit board wireless charging and data transmission integration method described above Figure 1 and can produce the same technical effects, which will not be elaborated here.

[0186] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms.

[0187] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A method for integrating wireless charging and data transmission of a flexible circuit board, characterized in that: The method comprises: Determine an application scenario of the flexible circuit board, and analyze application requirements of the flexible circuit board according to the application scenario, wherein the application requirements include a wireless charging frequency band and a data transmission rate, determine the coil material of the flexible circuit board based on the wireless charging frequency band, and calculate the high-frequency loss of the coil material; By using the high-frequency loss and the coil material, a multi-band compatible coil of the flexible circuit board is constructed, a frequency band LC matching network of the multi-band compatible coil is defined, and based on the frequency band LC matching network and the multi-band compatible coil, a wireless charging module of the flexible circuit board is constructed; A frequency band selection algorithm for the wireless charging module is defined, and based on the frequency band selection algorithm, the frequency band selection efficiency of the wireless charging module is calculated. The wireless charging module is optimized according to the frequency band selection efficiency to obtain an optimized wireless charging module. The frequency band selection algorithm for the wireless charging module is defined, including: defining frequency band selection parameters of the wireless charging module, analyzing the frequency band selection relationship of the frequency band selection parameters, determining the frequency band selection parameter weight of the frequency band selection parameter according to the frequency band selection relationship, and constructing the frequency band selection algorithm for the wireless charging module based on the frequency band selection parameters and the frequency band selection parameter weight using the following formula, wherein the frequency band selection algorithm includes: in, Indicates the frequency band score of the wireless charging module. Indicates the charging speed in the frequency band selection parameters. The band selection parameter weight representing the charging speed, represents the interference level in the band selection parameters, The band selection parameter weight representing the interference level, Indicates the conditional restrictions in the frequency band selection parameters. represents the weight of the frequency band selection parameter for conditional constraints, Indicates the device compatibility in the band selection parameters, Band selection parameter weights indicating device compatibility; By means of the data transmission rate, a data transmission protocol of the flexible circuit board is defined, and based on the data transmission protocol, a differential pair circuit of the flexible circuit board is constructed, and by means of the differential pair circuit, a data transmission module of the flexible circuit board is constructed; Define the flexible base material of the flexible circuit board, define the multi-layer layout of the flexible base material, wherein the multi-layer layout includes a bottom layer, a middle layer and a top layer, determine the interconnection holes of the multi-layer layout, and based on the interconnection holes, integrate the optimized wireless charging module and the data transmission module into the multi-layer layout of the flexible base material to obtain an integrated multi-layer flexible circuit board.

2. The method for integrating wireless charging and data transmission of a flexible circuit board according to claim 1, characterized in that: Analyzing the application requirements of the flexible circuit board according to the application scenario includes: Analyze application scenario characteristics of the application scenario; Analyze the charging influencing factors and user frequency band requirements of the application scenario according to the characteristics of the application scenario; Determining a wireless charging frequency band of the flexible circuit board based on the charging influencing factors and the user's frequency band requirements; Analyze the data transmission type, data transmission distance, and data transmission obstacles of the application scenario according to the characteristics of the application scenario; Defining the real-time requirements of scenario users corresponding to the application scenario; Determining the data transmission rate of the flexible circuit board based on the data transmission type, the data transmission distance, the data transmission obstacles and the user's real-time requirements; The application requirements of the flexible circuit board are defined according to the wireless charging frequency band and the data transmission rate.

3. The method for integrating wireless charging and data transmission of a flexible circuit board according to claim 1, characterized in that: The calculating the high frequency loss of the coil material comprises: Constructing a coil loss test environment for the coil material; Analyzing the material resistivity and material magnetic permeability of the coil material according to the coil loss test environment; In the coil loss test environment, constructing a simulated coil of the coil material; Calculating the DC resistance of the simulated coil based on the material resistivity; Calculating the DC resistance loss of the simulated coil through the DC resistance; Determining electrical parameters of the simulated coil under the coil loss test environment; Calculating skin effect loss and proximity effect loss of the simulated coil based on the electrical parameters and the material magnetic permeability; The high-frequency loss of the simulated coil is calculated by using the DC resistance loss, the skin effect loss, and the proximity effect loss using the following formula: in, represents the high frequency loss of the simulated coil, represents the DC resistance loss of the simulated coil, represents the DC current of the simulated coil, represents the skin effect loss of the simulated coil, Represents the proximity effect loss of the simulated coil.

4. The method for integrating wireless charging and data transmission of a flexible circuit board as claimed in claim 3, characterized in that: The step of calculating the skin effect loss and the proximity effect loss of the simulated coil based on the electrical parameters and the material magnetic permeability comprises: Determining the operating frequency, magnetic field strength and vacuum permeability of the simulated coil according to the electrical parameters; Based on the material magnetic permeability and the operating frequency, the skin effect loss of the simulated coil is calculated using the following formula: in, represents the skin effect loss of the simulated coil, represents the DC resistance of the simulated coil, represents pi, represents the operating frequency of the simulated coil, represents the magnetic permeability of the material simulating the coil, represents the material resistivity of the simulated coil; The proximity effect loss of the simulated coil is calculated using the following formula using the magnetic field strength and vacuum permeability: in, represents the proximity effect loss of the simulated coil, represents the coil geometry factor of the simulated coil, represents the magnetic field strength of the simulated coil, represents the vacuum permeability of the simulated coil, Represents the coil length of the simulated coil.

5. The method for integrating wireless charging and data transmission of a flexible circuit board as claimed in claim 1, characterized in that: The multi-band compatible coil of the flexible circuit board is constructed by using the high-frequency loss and the coil material, comprising: Defining a multi-band coil structure of the flexible circuit board according to the high-frequency loss and the coil material; calculating the resonant frequency of the multi-band coil structure; Analyzing optimized coil parameters of the multi-band coil structure based on the resonant frequency; A multi-band compatible coil of the flexible circuit board is constructed according to the optimized coil parameters and the multi-band coil structure.

6. The method for integrating wireless charging and data transmission of a flexible circuit board as claimed in claim 1, characterized in that: The frequency band LC matching network defining the multi-band compatible coil comprises: analyzing the coil self-inductance and coil mutual inductance of the multi-band compatible coil; Establishing an equivalent circuit model of the multi-band compatible coil according to the coil self-inductance and the coil mutual inductance; Determining passive components of the multi-band compatible coil based on the equivalent circuit model; Using the equivalent circuit model and the passive components, constructing an initial frequency band LC matching network of the multi-band compatible coil; Calculating the network frequency band performance of the initial frequency band LC matching network; When the network frequency band performance meets a preset network frequency band performance threshold, the initial frequency band LC matching network is used as the frequency band LC matching network of the multi-band compatible coil.

7. The method for integrating wireless charging and data transmission of a flexible circuit board as claimed in claim 1, characterized in that: The step of constructing the differential pair circuit of the flexible circuit board based on the data transmission protocol includes: Determining differential line indicators of the flexible circuit board according to the data transmission protocol; Defining the differential signal standard of the flexible circuit board; Determining the differential pair position and differential pair routing of the flexible circuit board according to the differential signal standard and the differential line index; Calculating the differential pair characteristic impedance of the flexible circuit board according to the differential pair position and the differential pair routing; Based on the differential pair characteristic impedance, constructing a differential pair layout of the flexible circuit board; The differential pair circuits of the flexible circuit board are determined through the differential pair layout.

8. The method for integrating wireless charging and data transmission of a flexible circuit board as claimed in claim 1, characterized in that: Based on the interconnection holes, the optimized wireless charging module and the data transmission module are integrated into the multi-layer layout of the flexible substrate material to obtain an integrated multi-layer flexible circuit board, including: constructing an initial flexible circuit board of the flexible substrate material; determining interconnect hole positions of the interconnect holes in the multi-layer layout; Based on the interconnection hole positions, establishing a multi-layer circuit diagram of the optimized wireless charging module and the data transmission module in the multi-layer layout; Constructing a PCB layout of the initial flexible circuit board according to the multi-layer circuit diagram; Based on the PCB layout, an integrated multi-layer flexible circuit board of the initial flexible circuit board is established.

9. A flexible circuit board wireless charging and data transmission integrated system, characterized in that: The system comprises: A high-frequency loss analysis module, used to determine the application scenario of the flexible circuit board, and analyze the application requirements of the flexible circuit board according to the application scenario, wherein the application requirements include a wireless charging frequency band and a data transmission rate, and based on the wireless charging frequency band, determine the coil material of the flexible circuit board, and calculate the high-frequency loss of the coil material; A wireless charging module construction module, used to construct a multi-band compatible coil of the flexible circuit board through the high-frequency loss and the coil material, define a frequency band LC matching network of the multi-band compatible coil, and construct a wireless charging module of the flexible circuit board based on the frequency band LC matching network and the multi-band compatible coil; A wireless charging module optimization module is used to define a frequency band selection algorithm for the wireless charging module, calculate the frequency band selection efficiency of the wireless charging module based on the frequency band selection algorithm, optimize the wireless charging module through the frequency band selection efficiency, and obtain an optimized wireless charging module, wherein the frequency band selection algorithm for defining the wireless charging module includes: defining frequency band selection parameters for the wireless charging module, analyzing the frequency band selection relationship of the frequency band selection parameters, determining the frequency band selection parameter weight of the frequency band selection parameter according to the frequency band selection relationship, and constructing the frequency band selection algorithm for the wireless charging module based on the frequency band selection parameters and the frequency band selection parameter weight using the following formula, wherein the frequency band selection algorithm includes: in, Indicates the frequency band score of the wireless charging module. Indicates the charging speed in the frequency band selection parameters. The band selection parameter weight representing the charging speed, represents the interference level in the band selection parameters, The band selection parameter weight representing the interference level, Indicates the conditional restrictions in the frequency band selection parameters. represents the weight of the frequency band selection parameter for conditional constraints, Indicates the device compatibility in the band selection parameters, Band selection parameter weights indicating device compatibility; A data transmission module construction module, used to define the data transmission protocol of the flexible circuit board through the data transmission rate, and to construct the differential pair circuit of the flexible circuit board based on the data transmission protocol, and to construct the data transmission module of the flexible circuit board through the differential pair circuit; A flexible circuit board integration module is used to define the flexible base material of the flexible circuit board, define the multi-layer layout of the flexible base material, wherein the multi-layer layout includes a bottom layer, a middle layer and a top layer, determine the interconnection holes of the multi-layer layout, and based on the interconnection holes, integrate the optimized wireless charging module and the data transmission module into the multi-layer layout of the flexible base material to obtain an integrated multi-layer flexible circuit board.

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