Analysis and management system for wireless power transmission

Abstract

The invention discloses an analysis and management system for wireless electric energy transmission. The operation method of the system comprises the following steps: controlling and managing the voltage and frequency of a transmitting end of the wireless electric energy transmission system; performing inverter structure management on the transmitting end of the wireless power transmission system; operation analysis of the wireless power transmission system is controlled and managed; and information data of the wireless power transmission system is collected, stored and processed. The step of controlling and managing the voltage and the frequency of the transmitting end of the wireless electric energy transmission system comprises the following steps of: changing the input voltage of a full-bridge inverter at the transmitting end of the wireless electric energy transmission system, and adding a DC-DC converter with variable output voltage at the front end of the full-bridge inverter, so that the input voltage of the full-bridge inverter is adjustable; during electric energy transmission processing of the wireless electric energy transmission system, the frequency of a full-bridge inverter switching tube gate driving signal is controlled and adjusted. The system has the characteristics of high stability and intelligent management control.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless power transmission, in particular to an analysis and management system for wireless power transmission. Background Art

[0002] As one of the main signs of the second industrial revolution, the use of electric energy has brought human society into the electrical age. People use natural resources to generate electric energy, such as wind power generation, thermal power generation, tidal power generation, etc. Electric energy has become an indispensable form of energy in people's lives and industrial production. With the improvement of people's living standards, more and more electronic products have appeared, and new energy vehicles have been promoted. People are very concerned about the charging technology of electrical equipment. Compared with wired power transmission, wireless power transmission technology (WPT) has been widely used and developed due to its safety and convenience. However, changes in load and coupling factors in wireless power transmission systems usually cause changes in output voltage. In practical applications, changes in coupling factors and loads are inevitable, which can easily lead to difficulties in the wireless power transmission system to output stable electric energy, making it difficult to meet load requirements and seriously affecting user satisfaction. Therefore, it is necessary to design an analysis and management system for wireless power transmission with strong stability and intelligent management and control. Summary of the invention

[0003] The object of the present invention is to provide an analysis and management system for wireless power transmission to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: a method for analyzing and managing wireless power transmission, comprising: Control and manage the voltage and frequency of the sending end of the wireless power transmission system; Manage the inverter structure at the transmitter end of the wireless power transmission system; Control and manage the operation analysis of wireless power transmission systems; Collect, store and process information data of the wireless power transmission system.

[0005] According to the above technical solution, the control and management of the voltage and frequency of the transmitting end of the wireless power transmission system includes: The input voltage of the full-bridge inverter at the transmitting end of the wireless power transmission system is changed, and a DC-DC converter with a variable output voltage is added to the front end of the full-bridge inverter to achieve adjustable input voltage of the full-bridge inverter; During the power transmission process of the wireless power transmission system, the frequency of the switch gate drive signal of the full-bridge inverter is controlled and adjusted.

[0006] According to the above technical solution, the inverter structure management of the transmitting end of the wireless power transmission system includes: For the inverter unit at the transmitting end of the wireless power transmission system, operation management is performed by adopting a full-bridge inverter structure.

[0007] According to the above technical solution, the control and management of the operation analysis of the wireless power transmission system includes: Digital orthogonal coherent demodulation is used to demodulate and decode the information of the wireless power transmission system to complete the reading of information data; The communication method between the receiving end and the transmitting end of the wireless power transmission system adopts 2ASK. The receiving end uses differential biphase encoding to encode the communication signal, in which the control byte encoding adopts 11-bit asynchronous serial data format to transmit data bytes, including 1 start bit, 8 data bits, 1 check bit and 1 stop bit. The start bit is 0, the order of data bits is the lowest bit at the front, the check bit is odd (if the data contains an even number of 1s, the check bit is 1, otherwise the data bits are an odd number of 1s, the check bit is 0), and the stop bit is 1.

[0008] After completing the coding process of the wireless communication system, the communication transmission of the system is further optimized and managed.

[0009] According to the above technical solution, the collection, storage and processing of information data of the wireless power transmission system includes: Collect the operation information data of each stage of the wireless power transmission system in real time and store it in blockchain nodes; When the corresponding manager or user continues to run the viewing process of the information data, the stored information data will be transmitted and displayed after the set verification.

[0010] According to the above technical solution, a wireless power transmission analysis and management system includes: A control processing module, used for controlling and processing data information of the wireless power transmission system; An analysis and management module is used to control and manage the operation analysis of the wireless power transmission system; The acquisition and transmission module is used to collect, store and process the information data of the wireless power transmission system.

[0011] According to the above technical solution, the control processing module includes: A voltage control module is used to perform voltage control processing of the wireless power transmission system; A frequency control module, used for controlling the frequency of the wireless power transmission system; The inverter module is used for controlling and managing the inverter structure.

[0012] According to the above technical solution, the analysis management module includes: A data demodulation module, used for demodulation control of data information; Data encoding module, used for encoding analysis and processing of data information; The communication management module is used for communication management of the wireless power transmission system.

[0013] According to the above technical solution, the acquisition and transmission module includes: A collection and storage module is used to collect and store operation information data; The verification and transmission module is used for information data review, verification and transmission management.

[0014] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention reduces reactive power and improves the overall efficiency of the wireless power transmission system by providing a control processing module, an analysis management module and an acquisition transmission module. Under different load conditions, the gate drive signal frequency and phase angle of the full-bridge inverter switch tube remain unchanged. Only the input voltage of the full-bridge inverter needs to be changed to meet the power demand. The controllable noise and electromagnetic interference are relatively small, so that the harmonic components of the transmitting coil current are relatively small, ensuring stable power transmission when the mutual inductance coefficient of the wireless power transmission system changes. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 is a flow chart of a method for analyzing and managing wireless power transmission provided in Embodiment 1 of the present invention; Figure 2 This is a module structure diagram of a wireless power transmission analysis and management system provided in Embodiment 2 of the present invention. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] Embodiment 1: Figure 1This is a flow chart of a method for analyzing and managing wireless power transmission provided in Embodiment 1 of the present invention. This embodiment can be applied to a wireless power transmission system. The method can be executed by a method for analyzing and managing wireless power transmission provided in Embodiment 1 of the present invention. The system is composed of multiple software and hardware modules, such as Figure 1 As shown, the method specifically comprises the following steps: S101, controlling and managing the voltage and frequency of the transmitting end of the wireless power transmission system; Exemplarily, in an embodiment of the present invention, the input voltage of the full-bridge inverter at the transmitting end of the wireless power transmission system is changed, and a DC-DC converter with a variable output voltage is added to the front end of the full-bridge inverter to achieve adjustable input voltage of the full-bridge inverter; in this step, during the wireless power transmission process of the system, when the load becomes heavier, the DC-DC converter control can be adjusted to output a corresponding larger output voltage to the full-bridge inverter, and when the load becomes lighter, the DC-DC converter control can be adjusted to output a corresponding smaller output voltage to the full-bridge inverter, thereby reducing reactive power and improving the overall efficiency of the wireless power transmission system. Under different load conditions, the gate drive signal frequency and phase angle of the full-bridge inverter switch tube remain unchanged, and only the input voltage of the full-bridge inverter can be changed to meet the power demand. The noise and electromagnetic interference that can be controlled by this step are relatively small, and the harmonic components of the transmitting coil current are reduced.

[0018] During the power transmission processing of the wireless power transmission system, the frequency of the full-bridge inverter switch gate drive signal is controlled and adjusted; since the load of the inverter is a resonant cavity composed of a transmitting coil and a compensation capacitor, the transmission efficiency is highest when the operating frequency is equal to the resonant frequency, but when the load of the wireless power transmission system changes, it will affect the transmitting end resonant frequency. Therefore, through this step, when the system load becomes heavier, the operating frequency of the inverter is controlled to decrease, the transmitting coil current is increased, and the output power is improved. When the load becomes lighter, the operating frequency of the inverter is increased, the transmitting coil current is reduced, and the efficiency of the wireless power transmission system is improved, ensuring that stable power transmission is achieved when the mutual inductance coefficient of the wireless power transmission system changes.

[0019] S102, performing inverter structure management at the transmitting end of the wireless power transmission system; Exemplarily, in an embodiment of the present invention, the inverter unit at the transmitting end of the wireless power transmission system is operated and managed by adopting a full-bridge inverter structure; since the full-bridge inverter structure in this step has lower switching MOS tube voltage stress and current stress than the half-bridge inverter and the push-pull inverter, and the full-bridge inverter has a higher output voltage than the half-bridge inverter, better controllability, and a larger system power range, the operation and processing of the wireless power transmission system is more efficient and stable, effectively improving user satisfaction.

[0020] S103, controlling and managing the operation analysis of the wireless power transmission system; Exemplarily, in an embodiment of the present invention, digital orthogonal coherent demodulation is used to perform data demodulation and decoding on the information of the wireless power transmission system to complete the reading of the information data; in this step, during the data demodulation and decoding process, the interrupt signal is captured by enabling the rising edge and the falling edge, and the distance between the positive and negative transition edges of the input signal is calculated using a timer. If the distance between the positive and negative transition edges is within 425us-625us, the input is judged as "O", and if the distance between the positive and negative transition edges is within 162.5us-337.5us, the input is judged as "1", otherwise it is considered to be an invalid code element, wherein the decoding circuit is divided into two paths, I and Q, each path correctly decodes the frame header and gives a frame header completion status flag, correctly decodes the packet header, and gives a packet header completion status flag, so that the MCU can query the packet header completion status flag to determine the type of the data packet. Through this processing, data demodulation and decoding can be made more efficient and accurate, and subsequent reading, identification and analysis can be facilitated.

[0021] The communication method between the receiving end and the transmitting end of the wireless power transmission system adopts 2ASK. The receiving end uses differential biphase encoding to encode the communication signal, in which the control byte encoding adopts 11-bit asynchronous serial data format to transmit data bytes, including 1 start bit, 8 data bits, 1 check bit and 1 stop bit. The start bit is 0, the order of data bits is the lowest bit at the front, the check bit is odd (if the data contains an even number of 1s, the check bit is 1, otherwise the data bits are an odd number of 1s, the check bit is 0), and the stop bit is 1.

[0022] After completing the encoding processing of the wireless communication system, the communication transmission of the system is further optimized and managed; in this step, the transmitter of the wireless communication system is first controlled to identify the receiver. If it cannot successfully identify whether it is the receiver, the transmitter performs a digital ping to the receiver. If the receiver responds to the digital ping, it enters the identification and configuration stage, otherwise it repeatedly enters the transmitter to identify the receiver. In the identification and configuration stage: the receiver sends device configuration related information. If the transmitter receives the relevant configuration information in this stage and establishes a power transmission protocol according to the configuration information, then it enters the negotiation stage, otherwise it enters the transmitter to repeatedly identify the receiver. In the negotiation stage, the receiver negotiates with the transmitter to complete the refinement of the power transmission protocol. Therefore, the receiver sends a negotiation request to the transmitter, and the transmitter can allow or reject it to ensure the stability and efficiency of communication transmission.

[0023] S104, collecting, storing and processing information data of the wireless power transmission system; Exemplarily, in an embodiment of the present invention, the operation information data of each stage of the wireless power transmission system is collected in real time and stored in blockchain nodes, which effectively prevents the information data from being tampered with and ensures the security of the information data.

[0024] When the corresponding manager or user continues to run the viewing process of the information data, the stored information data will be transmitted and displayed after the set verification.

[0025] Embodiment 2: Embodiment 2 of the present invention provides an analysis and management system for wireless power transmission. Figure 2 This is a schematic diagram of the module structure of a wireless power transmission analysis and management system provided in the second embodiment, such as Figure 2 As shown, the system includes: A control processing module, used for controlling and processing data information of the wireless power transmission system; An analysis and management module is used to control and manage the operation analysis of the wireless power transmission system; The acquisition and transmission module is used to collect, store and process the information data of the wireless power transmission system.

[0026] In some embodiments of the present invention, the control processing module includes: A voltage control module is used to perform voltage control processing of the wireless power transmission system; A frequency control module, used for controlling the frequency of the wireless power transmission system; The inverter module is used for controlling and managing the inverter structure.

[0027] In some embodiments of the present invention, the analysis management module includes: A data demodulation module, used for demodulation control of data information; Data encoding module, used for encoding analysis and processing of data information; The communication management module is used for communication management of the wireless power transmission system.

[0028] In some embodiments of the present invention, the acquisition and transmission module includes: A collection and storage module is used to collect and store operation information data; The verification and transmission module is used for information data review, verification and transmission management.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for analyzing and managing wireless power transmission, characterized in that: include: Control and manage the voltage and frequency of the sending end of the wireless power transmission system; Manage the inverter structure at the transmitter end of the wireless power transmission system; Control and manage the operation analysis of wireless power transmission systems; Collect, store and process information data of the wireless power transmission system.

2. The method for analyzing and managing wireless power transmission according to claim 1, characterized in that: The control and management of the voltage and frequency of the transmitting end of the wireless power transmission system includes: The input voltage of the full-bridge inverter at the transmitting end of the wireless power transmission system is changed, and a DC-DC converter with a variable output voltage is added to the front end of the full-bridge inverter to achieve adjustable input voltage of the full-bridge inverter; During the power transmission process of the wireless power transmission system, the frequency of the switch gate drive signal of the full-bridge inverter is controlled and adjusted.

3. The method for analyzing and managing wireless power transmission according to claim 1, characterized in that: The inverter structure management of the transmitting end of the wireless power transmission system includes: For the inverter unit at the transmitting end of the wireless power transmission system, operation management is performed by adopting a full-bridge inverter structure.

4. The method for analyzing and managing wireless power transmission according to claim 1, characterized in that: The control and management of the operation analysis of the wireless power transmission system includes: Digital orthogonal coherent demodulation is used to demodulate and decode the information of the wireless power transmission system to complete the reading of information data; The communication mode between the receiving end and the transmitting end of the wireless power transmission system adopts 2ASK. The receiving end uses differential biphase encoding to encode the communication signal. The control byte encoding adopts 11-bit asynchronous serial data format to transmit data bytes, including 1 start bit, 8 data bits, 1 check bit and 1 stop bit. The start bit is 0, the order of data bits is the lowest bit at the front, the check bit is odd check (the data contains an even number of 1s, the check bit is 1, otherwise the data bits are an odd number of 1s, the check bit is 0), and the stop bit is 1; After completing the coding process of the wireless communication system, the communication transmission of the system is further optimized and managed.

5. The method for analyzing and managing wireless power transmission according to claim 1, characterized in that: The collecting, storing and processing of information data of the wireless power transmission system includes: Collect the operation information data of each stage of the wireless power transmission system in real time and store it in blockchain nodes; When the corresponding manager or user continues to run the viewing process of the information data, the stored information data will be transmitted and displayed after the set verification.

6. An analysis and management system for wireless power transmission, characterized in that: include: A control processing module, used for controlling and processing data information of the wireless power transmission system; An analysis and management module is used to control and manage the operation analysis of the wireless power transmission system; The acquisition and transmission module is used to collect, store and process the information data of the wireless power transmission system.

7. The wireless power transmission analysis and management system according to claim 6, characterized in that: The control processing module comprises: A voltage control module is used to perform voltage control processing of the wireless power transmission system; A frequency control module, used for controlling the frequency of the wireless power transmission system; The inverter module is used for controlling and managing the inverter structure.

8. The wireless power transmission analysis and management system according to claim 6, characterized in that: The analysis management module includes: A data demodulation module, used for demodulation control of data information; Data encoding module, used for encoding analysis and processing of data information; The communication management module is used for communication management of the wireless power transmission system.

9. The wireless power transmission analysis and management system according to claim 6, characterized in that: The acquisition and transmission module comprises: A collection and storage module is used to collect and store operation information data; The verification and transmission module is used for information data review, verification and transmission management.

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