Wireless charging control system, method, device and charging station for a vehicle

Abstract

The application provides a wireless charging control system, method and equipment of a vehicle and a charging station, relates to the electric vehicle charging technical field, and comprises a server, a phased coil array and a sensing component. The sensing component is used for collecting vehicle data in a wireless charging area of the vehicle. The server is used for determining a vehicle position of at least one vehicle to be charged according to the vehicle data, and controlling the phased coil array to charge the corresponding vehicle to be charged based on the vehicle position of the at least one vehicle to be charged. The application collects the vehicle data in the wireless charging area of the vehicle through the sensing component, and determines the vehicle position of the at least one vehicle to be charged according to the data by the server, and then controls the phased coil array to charge the corresponding vehicle to be charged, so that the same set of phased coil array can dynamically provide wireless charging services for multiple vehicles according to the positions of the multiple vehicles.

Description

Technical Field

[0001] This application relates to the field of electric vehicle charging technology, and more specifically, to a wireless charging control system, method, device, and charging station for vehicles. Background Technology

[0002] With the popularization of electric vehicles, wireless charging technology has become a research hotspot due to its advantages such as no physical contact and convenient operation. In particular, the demand for simultaneous wireless charging of multiple vehicles is becoming increasingly urgent in multi-parking lot scenarios.

[0003] However, existing wireless charging control technologies for vehicles require each charging space to have an independent complete array of transmitting coils or a charging board. An array or a charging board can only charge one vehicle, resulting in low charging efficiency. Summary of the Invention

[0004] The purpose of this application is to provide a wireless charging control system, method, device, and charging station for vehicles, which solves the above-mentioned problems existing in the prior art and can improve charging efficiency and charging flexibility.

[0005] In one aspect, a wireless charging control system for a vehicle is provided, which may include: a server, a phased coil array, and a sensing component; The sensing component is used to collect vehicle data within the wireless charging area of ​​the vehicle. The server is configured to determine the location of at least one vehicle to be charged based on the vehicle data, and control the phased array to charge the corresponding vehicle based on the location of the at least one vehicle to be charged.

[0006] In an optional implementation, the phased array includes multiple transmitting units; each transmitting unit is configured to collaboratively generate at least one focused beam according to control commands issued by the server; the number of focused beams is the same as the number of vehicles to be charged. Each transmitting unit includes: a tunable inductor, a power amplifier, and a phase control component; the power amplifier is connected to both the tunable inductor and the phase control component; the phase control component is also connected to the server.

[0007] In an optional implementation, the system further includes a receiving component disposed on each vehicle to be charged; The receiving component is used to receive the focused beam generated by the phased coil array, convert the electromagnetic energy of the focused beam into direct current to charge the corresponding vehicle to be charged, and obtain the received power and first phase difference of the vehicle to be charged.

[0008] In an optional implementation, the server is specifically used for: When the number of vehicles to be charged is 1, the charging parameters of the vehicle to be charged are obtained. Based on the vehicle location of the vehicle to be charged and the unit location of each configured transmitter, calculate the distance between each transmitter and the vehicle location; Based on the distance between each transmitting unit and the vehicle's location and the charging parameters, determine the control parameters for each transmitting unit to focus on the vehicle to be charged; Based on the control parameters corresponding to each transmitting unit, the magnetic fields generated by each transmitting unit are superimposed in phase at the vehicle's location to form a focused beam pointing towards the vehicle to be charged, thereby charging the vehicle.

[0009] In an optional implementation, the server is further configured to: The energy receiving power and first phase difference of the vehicle to be charged at the current charging moment are obtained, as well as the control parameters of each transmitting unit at the current charging moment are determined. Based on the energy receiving power and the first phase difference, the control parameters of each transmitting unit are corrected to obtain the target control parameters of each transmitting unit. Based on the target control parameters corresponding to each transmitting unit, each transmitting unit is controlled to form a focused beam pointing towards the vehicle to be charged at the next charging time of the current charging time.

[0010] In an optional implementation, the server is specifically used for: When the number of vehicles to be charged is not 1, obtain the energy weighting coefficient of each vehicle to be charged. For any vehicle to be charged, the distance between each transmitting unit and the vehicle location is calculated based on the vehicle location and the unit location of each transmitting unit. Based on the energy weighting coefficient of the vehicle to be charged and the distance between each transmitting unit and the vehicle, the control parameters for each transmitting unit to focus on the vehicle to be charged are determined. Based on the control parameters corresponding to each transmitting unit, the magnetic fields generated by each transmitting unit are superimposed in phase at the vehicle positions of each vehicle to be charged, forming multiple focused beams pointing towards each vehicle to be charged, thereby charging each vehicle.

[0011] In an optional implementation, the system further includes an electromagnetic phase-locked loop; The electromagnetic phase-locked loop is connected to both the server and the phased-array coil. The electromagnetic phase-locked loop is used to detect the second phase difference between each focused beam, generate a phase correction signal based on the second phase difference, and send the phase correction signal to the server. The server is also used for: The phase correction signal is received, and the reflection phase of each transmitting unit is adjusted according to the phase correction signal so that the phase difference between the multiple focusing beams is within a preset range.

[0012] Secondly, a wireless charging control method for a vehicle is provided, which may include: Acquire vehicle data within the wireless charging area collected by the sensing components; Based on the vehicle data, determine the location of at least one vehicle to be charged; Based on the vehicle location of at least one vehicle to be charged, the phased coil array is controlled to charge the corresponding vehicle.

[0013] Thirdly, an electronic device is provided, which includes a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus; Memory, used to store computer programs; When a processor executes a program stored in memory, it implements any of the steps described in the first aspect above.

[0014] Fourthly, a vehicle unmanned automatic charging station is provided, which includes a phased-array coil, a sensing component, and a server for performing the wireless charging control method for the vehicle described in the second aspect above.

[0015] Fifthly, a computer-readable storage medium is provided, wherein a computer program is stored therein, and when executed by a processor, the computer program implements the method steps described in the second aspect above.

[0016] This application collects vehicle data within the wireless charging area using sensing components. A server then uses this data to determine the location of at least one vehicle to be charged, and subsequently controls a phased-array power control system to charge the corresponding vehicle. This allows the same phased-array power control system to dynamically provide wireless charging services to multiple vehicles based on their locations. This application significantly reduces the number and cost of hardware deployments for charging infrastructure, while improving charging efficiency and flexibility. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 An architecture diagram of a wireless charging control system for a vehicle provided in an embodiment of this application; Figure 2 An architectural diagram of another wireless charging control system for a vehicle provided in an embodiment of this application; Figure 3 A flowchart illustrating a wireless charging control method for a vehicle provided in an embodiment of this application; Figure 4 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. Unless otherwise defined, the technical or scientific terms used in this application should have the ordinary meaning understood by those skilled in the art. The words "first," "second," and similar terms used in this application do not indicate any order, quantity, or importance, but are only used to distinguish different components. The words "comprising" or "including," etc., mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, but do not exclude other elements or objects. The words "connected," "coupled," or "connected," etc., are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up," "down," "left," "right," etc., are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0020] The wireless charging control method for vehicles provided in this application embodiment can be applied to... Figure 1 In the system architecture shown, such as Figure 1 As shown, the system may include: a server, a phased-coil array, and sensing components; The sensing component is used to collect vehicle data within the wireless charging area of ​​the vehicle; wherein, the sensing component can be one or more of a radar detection component, an image acquisition component, or a parking space occupancy detection sensor; the parking space occupancy detection sensor can be located in each charging parking space within the wireless charging area of ​​the vehicle, and can be a geomagnetic sensor, an ultrasonic sensor, or an infrared sensor. The server is used to determine the location of at least one vehicle to be charged based on vehicle data, and to control a phased-array power supply to charge the corresponding vehicle based on its location. This server can be a physical server, a server cluster consisting of multiple physical servers, or a distributed system. It can also be a cloud server providing basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communication, middleware services, domain name services, security services, content delivery networks (CDNs), and big data and artificial intelligence platforms.

[0021] In one embodiment of this application, the phased-controlled coil array can be a phased-controlled magnetic resonant coil array; the phased-controlled magnetic resonant coil array includes multiple transmitting units and an array interface; the multiple transmitting units are arranged in a linear, one-dimensional, or two-dimensional array, or can be uniformly arranged along the horizontal direction; each transmitting unit includes a tunable inductor, a high-frequency power amplifier, a phase control component, and a current sensor; wherein, the tunable inductor is composed of a coil body wound with Litz wire and a parallel variable capacitor; the coil body and the two ends of the parallel variable capacitor are electrically connected respectively; the output end of the power amplifier is electrically connected to the two ends of the tunable inductor; the output end of the phase control component is electrically connected to the input end of the high-frequency power amplifier; the detection end of the current sensor is connected in series in the line between the tunable inductor and the high-frequency power amplifier; the array interface is disposed on the edge or back of the phased-controlled magnetic resonant coil array, and is electrically connected to the input end of the phase control component of each transmitting unit and the output end of the current sensor of each transmitting unit respectively; the array interface is connected to the server via a ribbon cable or bus; Specifically, the tunable inductor is used to generate an alternating magnetic field when a high-frequency alternating current is applied; the parallel variable capacitor is used to adjust the resonant frequency of the coil body to match the system operating frequency. The high-frequency power amplifier is used to receive the radio frequency input signal from the phase control component, amplify the power of the radio frequency input signal to the target level, and provide high-frequency alternating current to the tunable inductor coil; The phase control component is used to receive phase control commands from the array interface and generate an RF signal with a specified phase, which is then output to the high-frequency power amplifier. A current sensor is used to acquire current detection data output by each transmitting unit in real time and transmit the detected current detection data to the array interface through a signal line; the current detection data may include current amplitude and current phase. The array interface is used to forward the control parameters issued by the server to each phase control component, and to summarize the current detection data collected by each current sensor and report it to the server.

[0022] In another embodiment of this application, such as Figure 2 As shown, the system may further include: a receiving component disposed on each vehicle to be charged; the receiving component is used to receive the focused beam generated by the phased coil array, convert the electromagnetic energy of the focused beam into DC power to charge the corresponding vehicle to be charged, and obtain the receiving power and first phase difference of the vehicle to be charged. Any receiving component may include a receiving coil, a rectifier and filter circuit, a power detection component, a phase deviation acquisition component, and a communication component; the first and second ends of the receiving coil are electrically connected to the two AC inputs of the rectifier and filter circuit, respectively; the third end of the receiving coil is also electrically connected to the first input of the phase deviation acquisition component; the positive DC output of the rectifier and filter circuit is electrically connected to the current sampling input and the first voltage sampling input of the power detection component, respectively; the negative DC output of the rectifier and filter circuit is electrically connected to the current sampling return and the second voltage sampling input of the power detection component, respectively; the DC output of the rectifier and filter circuit is also electrically connected to the power supply of the wireless communication component; the current sampling output and the voltage sampling output of the power detection component are electrically connected to the first and second inputs of the wireless communication component, respectively; the second input of the phase deviation acquisition component is electrically connected to the reference signal output of the wireless communication component; the output of the phase deviation acquisition component is electrically connected to the third input of the wireless communication component; the antenna of the wireless communication component is connected to a spatial wireless channel; and the feedback output of the wireless communication component is connected to a server via a wireless link. Specifically, the receiving coil is used to capture the energy of the alternating magnetic field in the focused beam generated by the phased magnetic resonant coil array and induce a high-frequency alternating current. A rectifier and filter circuit is used to convert high-frequency alternating current into smooth direct current and output a DC voltage. The power detection component, including a current sampling resistor and a voltage divider network, is used to acquire the output current and output voltage and calculate the energy received power. The phase deviation acquisition component can be a phase detector used to detect a first phase difference between the phase of the focused beam received by the receiving coil and the configured reference phase; The wireless communication component is used to report the received power and the first phase difference to the server so that the server can adjust the control parameters of the phase-controlled magnetic resonant coil array.

[0023] In one embodiment of this application, the server is specifically used for: Based on the vehicle data collected by the sensing device within the vehicle wireless charging area, the number of vehicles waiting to be charged within the vehicle wireless charging area is determined. When there is only one vehicle to be charged, the charging parameters of the vehicle to be charged are obtained; the distance between each transmitting unit and the vehicle position is calculated based on the vehicle position and the unit position of each transmitting unit; the control parameters for each transmitting unit to focus on the vehicle to be charged are determined based on the distance between each transmitting unit and the vehicle position and the charging parameters; based on the control parameters corresponding to each transmitting unit, the magnetic fields generated by each transmitting unit are controlled to be superimposed in phase at the vehicle position to form a focused beam pointing towards the vehicle to be charged, thereby charging the vehicle to be charged; the energy receiving power and first phase difference of the vehicle to be charged at the current charging moment are obtained, as well as the control parameters of each transmitting unit at the current charging moment are determined; based on the energy receiving power and first phase difference, the control parameters of each transmitting unit are corrected to obtain the target control parameters of each transmitting unit; based on the target control parameters corresponding to each transmitting unit, each transmitting unit is controlled to form a focused beam at the next charging moment to charge the vehicle to be charged. When the number of vehicles to be charged is not 1, the system obtains the energy weighting coefficient of each vehicle; for any vehicle to be charged, the system calculates the distance between each transmitter and the vehicle position based on the vehicle position and the unit positions of each transmitter; based on the energy weighting coefficient of the vehicle to be charged and the distance between each transmitter and the vehicle position, the system determines the control parameters for each transmitter to focus on the vehicle; based on the control parameters corresponding to each transmitter, the system controls the magnetic fields generated by each transmitter to be superimposed in phase at the vehicle positions of each vehicle to form multiple focused beams pointing towards each vehicle to charge; the system obtains the energy received power and first phase difference of each vehicle at the current charging moment, as well as the determined control parameters of each transmitter at the current charging moment; based on the energy received power and first phase difference, the system corrects the control parameters of each transmitter to obtain the target control parameters of each transmitter; based on the target control parameters corresponding to each transmitter, the system controls each transmitter to form multiple focused beams at the next charging moment to charge each vehicle simultaneously. In another embodiment of this application, the system may further include: an electromagnetic phase-locked loop; The electromagnetic phase-locked loop is connected to both the server and the phase-controlled coil array. An electromagnetic phase-locked loop is used to detect the second phase difference between each focused beam, generate a phase correction signal based on the second phase difference, and send the phase correction signal to the server.

[0024] In another embodiment of this application, the electromagnetic phase-locked loop may include: a frequency locking component, an interference monitoring component, a phase difference detection component, a magnetic field sensor interface, and at least three magnetic field sensors; The reference input terminal of the frequency locking component is electrically connected to the reference crystal oscillator of the phased coil array, and the clock output terminal of the frequency locking component is electrically connected to the phase control components of each transmitting unit of the phased coil array and the clock input terminal of the server, respectively. The input terminal of the interference monitoring component is electrically connected to the external receiving antenna, and the output terminal of the interference monitoring component is connected to the server. The first input terminal of the phase difference detection component is electrically connected to the array interface of the phased coil array to acquire the output signal of each transmitting unit, the second input terminal of the phase difference detection component is electrically connected to the reference signal output terminal of the server, and the output terminal of the phase difference detection component is connected to the server. The input terminal of the magnetic field sensor interface is electrically connected to the output terminal of each magnetic field sensor, and the output terminal of the magnetic field sensor interface is connected to the server. Each magnetic field sensor is arranged around or at the edge of the phased coil array, and each magnetic field sensor is used to collect the magnetic field strength at the corresponding location. Specifically, the frequency locking component is used to lock the operating clock of the phased coil array with the reference crystal oscillator, so that the frequency consistency deviation of each transmitting unit does not exceed a preset value (e.g., 10Hz), and feeds back the locking status to the server; The interference monitoring component is used to monitor the strength of external electromagnetic interference signals in real time. When the interference signal strength exceeds a preset threshold (e.g., -60dBm), it generates an interference flag and interference frequency information and sends it to the server. The server then uses the frequency locking component to fine-tune the transmission frequency to avoid the interference band. The phase difference detection component is used to detect the phase difference between each transmitting unit or the second phase difference between multiple focused beams, and generates a phase correction signal based on the detection result, which is sent to the server. The server then adjusts the current phase of each transmitting unit to ensure the stability of the phase relationship of each focused beam. A magnetic field sensor is used to collect magnetic field distribution data at the edge of the phased coil array in real time. The magnetic field sensor interface transmits the collected magnetic field data to the server, which determines whether the local magnetic field strength deviation exceeds a preset range (e.g., 10%). If it does, the phase of the edge transmitting unit is finely adjusted (e.g., ±5°) through the array interface of the phased coil array to compensate for the magnetic field non-uniformity and ensure that the magnetic field fluctuation in the energy focusing area does not exceed a preset value (e.g., 5%).

[0025] In yet another embodiment of this application, the server is further configured to: The system receives a phase correction signal and adjusts the reflection phase of each transmitting unit according to the phase correction signal so that the phase difference between multiple focused beams is within a preset range.

[0026] In another embodiment of this application, the system may further include: a communication module for data communication between the server and the vehicle to be charged.

[0027] The preferred embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this application. Furthermore, the embodiments and features in the embodiments of this application can be combined with each other without conflict.

[0028] Figure 3 This is a flowchart illustrating a wireless charging control method for a vehicle provided in an embodiment of this application. Figure 3 As shown, the method may include: Step S310: Obtain vehicle data within the wireless charging area collected by the sensing component.

[0029] In practice, the radar component transmits a frequency-modulated continuous wave detection signal to the vehicle's wireless charging area and receives the reflected echo signal. The echo signal is then mixed with the transmitted detection signal to obtain an intermediate frequency signal, which is used as vehicle data. Alternatively, when the image acquisition component receives the image acquisition signal sent by the server, it acquires an image within the vehicle's wireless charging area and combines it with the parking space occupancy signal in the image acquisition signal as vehicle data; wherein, the image acquisition signal is sent by the server when it receives the parking space occupancy signal sent by the parking space occupancy detection sensor; the parking space occupancy signal may include the location of the occupied wireless charging parking space.

[0030] Step S320: Determine the location of at least one vehicle to be charged based on the vehicle data.

[0031] In practice, by analyzing the time delay (frequency difference) and phase difference of the intermediate frequency signal, the three-dimensional spatial coordinates of each vehicle are calculated using spatial spectrum estimation algorithms (such as MUSIC and FFT angle measurement). Simultaneously, the radar can collect changes in echo intensity to determine whether the vehicle has come to a complete stop or has shifted.

[0032] In another embodiment of this application, when the vehicle data consists of parking space occupancy signals and images, the method for determining the vehicle's location may include: For any given image, target detection algorithms (such as YOLO and SSD) are used to identify the bounding box of the vehicle in the image and filter out vehicle targets located within the charging parking space area. For each detected vehicle, key points related to the location of the charging receiving coil (such as the center of the vehicle chassis, specific markers on the front bumper, or pre-calibrated feature points of the receiving coil location) are extracted using object detection algorithms (such as YOLO, SSD). If key points cannot be extracted directly, the center of the bottom edge of the bounding box is used as the estimated point of the vehicle position. Using the calibration parameters (intrinsic and extrinsic parameters) of the configured image acquisition component, the pixel coordinates of the vehicle key points in the image are converted into three-dimensional coordinates in the world coordinate system; The three-dimensional coordinates calculated from each image are triangulated or weighted and averaged. Combined with the sensor position of the parking space occupancy detection sensor corresponding to the parking space occupancy signal, the vehicle position of each vehicle in the image is determined, and the vehicle position of each vehicle to be charged is obtained.

[0033] In yet another embodiment of this application, after determining the vehicle location of at least one vehicle to be charged, the method may further include: The server controls the communication module to broadcast charging wake-up information; the charging wake-up information may include: charging station identifier, parking space number, and a random number for session security; Receive charging response information sent by the vehicle to be charged in response to the charging wake-up message; wherein, the charging response information may include: vehicle unique identifier (Vehicle identification number or temporary ID), current battery state of charge, target charging mode, target state of charge, whether this charging system is supported and charging request flag; the target charging mode may include fast charging or slow charging; the target state of charge may be 80% or 100% or other percentages greater than the current battery state of charge; The charging parameters of the vehicle to be charged are extracted from the charging response information. Alternatively, the charging parameters corresponding to the unique vehicle identifier in the vehicle response information can be matched from the database. The charging parameters may include: the current battery state of charge, the target charging mode, and the target state of charge. Both the current battery state of charge and the target state of charge are percentages.

[0034] Step S330: Based on the vehicle position of at least one vehicle to be charged, control the phased coil array to charge the corresponding vehicle to be charged.

[0035] In practice, the number of vehicles waiting to be charged that send charging response information is determined. (1) When the number of vehicles to be charged is 1, the energy weighting coefficient of the vehicle to be charged can be regarded as 1. At this time, all transmitting units jointly charge the vehicle to be charged, specifically including: Obtain the charging parameters of the vehicle to be charged; calculate the distance between each transmitting unit and the vehicle location based on the vehicle location and the unit location of each configured transmitting unit. Based on the distance between each transmitting unit and the vehicle location and the charging parameters, control parameters for each transmitting unit to focus on the vehicle to be charged are determined. These control parameters may include current phase and current amplitude. Specifically, based on the distance between each transmitting unit and the vehicle location, the current phase corresponding to each transmitting unit is calculated so that the magnetic field generated by that unit is in phase with other units when it reaches the vehicle's receiving coil. The formula for calculating the current phase is: Current phase = 2π × distance / wavelength (normalized to 0~360° after modulus). Based on the charging parameters, the current amplitude corresponding to each transmitting unit is determined. The reference amplitude corresponding to the target charging mode is matched from a table of different target charging modes and different reference amplitudes. The difference between the current battery state of charge and the target state of charge in the charging parameters is determined as the target charge level. The ratio of the target charge level to a preset charge threshold is used as the amplitude scaling factor. The product of the amplitude scaling factor and the reference amplitude is used as the current amplitude. The preset charge threshold can be 20%. When only one vehicle is charging, the current amplitude of each transmitting unit is the same. Based on the control parameters corresponding to each transmitting unit, the magnetic fields generated by each transmitting unit are superimposed in phase at the vehicle's location to form a focused beam pointing towards the vehicle to be charged, thus charging the vehicle. Specifically, the server sends the current phase and current amplitude of each transmitting unit to the phase control component and power amplifier of each transmitting unit, so that the phase control component and power amplifier control the corresponding transmitting unit to simultaneously generate an alternating magnetic field according to the current amplitude and current phase, which are coherently superimposed in space to form a focused beam pointing towards the vehicle to be charged; the receiving component of the vehicle to be charged receives the energy and begins charging. The energy receiving power and first phase difference of the vehicle to be charged at the current charging moment are obtained, as well as the control parameters of each transmitting unit at the current charging moment are determined; wherein, the energy receiving power is detected by the power detection component of the vehicle to be charged; Based on the energy receiving power and the first phase difference, the control parameters of each transmitting unit are corrected to obtain the target control parameters of each transmitting unit; wherein, the first phase difference is the difference between the voltage phase of the receiving coil and the reference phase; specifically, the target energy receiving power is determined according to the charging parameters; wherein, the maximum allowable receiving power corresponding to the configured target charging mode is obtained; wherein, the maximum allowable receiving power for fast charging can be 7kW, and the maximum allowable receiving power for slow charging can be 3kW; the power derating factor α=min(1, target power / preset power threshold) is calculated, and the product of the maximum allowable receiving power and the power derating factor is taken as the target energy receiving power; the target energy receiving power and the energy The ratio of the received power is used as the amplitude correction coefficient; the product of the current amplitude of each transmitting unit and the amplitude correction coefficient is used as the corrected current amplitude; the phase correction step size is determined based on the first phase difference; wherein, a maximum single phase correction step size Δφ_step_max (e.g., 5°) is set to avoid over-adjustment; a dead zone threshold Δφ_dead (e.g., 2°) is set, and no phase correction is performed when |Δφ|≤Δφ_dead; if |Δφ|>Δφ_dead, the correction step size Δφ_step=min(Δφ_step_max,|Δφ|×H) is calculated, where H is a proportionality coefficient (e.g., 0.5) to make the step size proportional to the phase difference. The sign is opposite to Δφ: phase correction step size = -sign(Δφ)×Δφ_step; the sum of the current phase of each transmitting unit and the phase correction step size is used as the corrected current phase; the corrected current amplitude and current phase of each transmitting unit are used as the target control parameters of each transmitting unit. Based on the target control parameters corresponding to each transmitting unit, each transmitting unit is controlled to form a focused beam at the next charging moment of the current charging moment to charge the vehicle to be charged, so that the actual charging voltage and charging current follow the desired curve (such as constant current or constant voltage), and stop when the target state of charge is reached.

[0036] (2) When the number of vehicles to be charged is not 1, all transmitting units jointly charge multiple vehicles to be charged, specifically including: Obtain the energy weight coefficient for each vehicle to be charged; wherein, the method for obtaining the energy weight coefficient may include: obtaining the current battery state of charge, target state of charge, and target charging mode for each vehicle to be charged; for any vehicle, taking the difference between the vehicle's state of charge and the target state of charge as the energy difference; matching the target energy demand coefficient corresponding to the target charging mode from a configured lookup table of different charging modes and different energy demand coefficients; and calculating the initial weight coefficient for the vehicle based on the energy difference and the target energy demand coefficient. ;in, This represents the initial weighting coefficient of the k-th vehicle to be charged; This represents the target energy demand coefficient for the kth vehicle to be charged. This represents the energy difference of the k-th vehicle to be charged; based on the initial weight coefficients of all vehicles to be charged within the vehicle's wireless charging area, the initial weight coefficients of each vehicle are corrected to obtain the energy weight coefficients of each vehicle. ; This represents the energy weighting coefficient of the k-th vehicle to be charged; This represents the sum of the initial weighting coefficients of all vehicles to be charged within the wireless charging area. For any vehicle to be charged, calculate the distance between each transmitting unit and the vehicle's location based on the vehicle's location and the location of each transmitting unit configured therein. Based on the energy weighting coefficient of the vehicle to be charged and the distance between each transmitting unit and the vehicle's location, the control parameters for each transmitting unit to focus on the vehicle to be charged are determined. Specifically, based on the distance between each transmitting unit and the vehicle's location, the initial current phase corresponding to each transmitting unit is calculated. The formula for calculating the initial current phase is as follows: ;in, This represents the distance between the i-th transmitting unit and the k-th vehicle to be charged; This indicates the initial current phase required for the i-th transmitting unit to be focused onto the k-th vehicle to be charged; This represents the electromagnetic wave wavelength corresponding to the preset operating frequency; based on the initial current phase of each transmitting unit and the energy weighting coefficient of each vehicle to be charged, the current phase and current amplitude of each transmitting unit are calculated; the formula for calculating the current amplitude is as follows: ; Indicates the number of vehicles waiting to be charged; This represents the current amplitude of the i-th transmitting unit; The initial current phase corresponding to any transmitting unit includes the initial current phase corresponding to each vehicle to be charged; the current amplitude is a relative value, and the actual current needs to be multiplied by the configured reference current, i.e., the maximum allowable current. Based on the control parameters corresponding to each transmitting unit, the magnetic fields generated by each transmitting unit are superimposed in phase at the vehicle locations of each vehicle to be charged, forming multiple focused beams pointing towards each vehicle to begin charging. Specifically, the server sends the current amplitude and current phase of each transmitting unit to the power amplifier and phase control component of the corresponding transmitting unit. All transmitting units generate alternating magnetic fields according to the corresponding current amplitude and current phase. Since the current amplitude and current phase of each transmitting unit are calculated based on the distance of all vehicles to be charged, the energy weighting coefficient, and complex superposition (or summation of in-phase / quadrature components), for any vehicle to be charged, the magnetic fields of each transmitting unit achieve in-phase superposition (phase compensation) at the location of its receiving coil, and the amplitude of the synthesized magnetic field is proportional to the weighting coefficient of the vehicle to be charged, thus forming an independent focused beam at the location of each vehicle to be charged, and the energy intensity ratio of each beam is equal to the energy weighting coefficient of each vehicle. Subsequently, the receiving component of the vehicle to be charged begins to output DC power, officially entering the charging stage. The energy receiving power and first phase difference of each vehicle to be charged at the current charging moment are obtained, as well as the control parameters of each transmitting unit at the current charging moment are determined. For any vehicle to be charged, the product of the energy weighting coefficient of the vehicle to be charged and the rated power of the configured charging station is taken as the target receiving power of the vehicle to be charged; the rated power of the charging station is the maximum output power currently allowed by the charging station. The square root of the ratio of the target received power to the energy received power is used as the amplitude adjustment coefficient; Based on the first phase difference, calculate the phase correction amount for the vehicle to be charged. Specifically, if the absolute value of the first phase difference is less than the phase difference threshold (e.g., 2 degrees), the phase correction amount is zero; otherwise, the phase correction amount = -(sign of the first phase difference) × min(configured maximum single correction step size, proportional coefficient × first phase difference|); where the proportional coefficient is 0.5 and the maximum single correction step size is 5 degrees. The negative sign indicates that the phase difference approaches zero. The product of the energy weight coefficient and the amplitude adjustment coefficient of the vehicle to be charged is used as the initial dynamic weight of the vehicle to be charged. After normalizing the initial dynamic weights of each vehicle to be charged, the dynamic weights of each vehicle to be charged are obtained. The sum of the current phase of each transmitting unit and the corresponding phase correction amount is used as the corrected current phase of each transmitting unit; specifically, the current phase of each transmitting unit for the k-th vehicle to be charged is added to the phase correction amount of that vehicle to be charged to obtain the corrected current phase. Based on the dynamic weights of each vehicle to be charged and the corrected current phase of each transmitting unit, the target current phase and target current amplitude of each transmitting unit are calculated; the formula for calculating the target current phase is as follows: ;in, This indicates the target current phase of the i-th transmitting unit; This represents the dynamic weight of the k-th vehicle waiting to be charged; This represents the current phase of the i-th transmitting unit for the k-th vehicle to be charged; the target current amplitude is calculated using the following formula: ;in, This represents the target current amplitude of the i-th transmitting unit; The target current amplitude and target current phase of each transmitting unit are used as the target control parameters of each transmitting unit. The server sends the target current amplitude and target current phase of each transmitting unit to the corresponding power amplifier and phase control component. At the next charging moment, it controls each transmitting unit to form multiple focused beams to charge the corresponding vehicle to be charged. The number of focused beams is the same as the data of the vehicle to be charged.

[0037] This application also provides an electronic device, such as... Figure 4 As shown, it includes a processor 410, a communication interface 420, a memory 430, and a communication bus 440, wherein the processor 510, the communication interface 420, and the memory 430 communicate with each other through the communication bus 440.

[0038] Memory 430 is used to store computer programs; When the processor 410 executes the program stored in the memory 430, it performs the following steps: Acquire vehicle data within the wireless charging area collected by the sensing components; Based on vehicle data, determine the location of at least one vehicle to be charged; Based on the vehicle location of at least one vehicle to be charged, the phased coil array is controlled to charge the corresponding vehicle.

[0039] The communication bus mentioned above can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. This communication bus can be divided into address bus, data bus, control bus, etc. For ease of illustration, only one thick line is used to represent it in the diagram, but this does not mean that there is only one bus or one type of bus.

[0040] The communication interface is used for communication between the aforementioned electronic devices and other devices.

[0041] The memory may include random access memory (RAM) or non-volatile memory (NVM), such as at least one disk storage device. Optionally, the memory may also be at least one storage device located remotely from the aforementioned processor.

[0042] The processors mentioned above can be general-purpose processors, including central processing units (CPUs), network processors (NPs), etc.; they can also be digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0043] The implementation methods and beneficial effects of the various components of the electronic device in the above embodiments for solving the problem can be found in [reference needed]. Figure 3 The steps in the illustrated embodiments are used to implement the electronic device. Therefore, the specific working process and beneficial effects of the electronic device provided in this application will not be repeated here.

[0044] In another embodiment provided in this application, a computer-readable storage medium is also provided, which stores instructions that, when executed on a computer, cause the computer to perform the wireless charging control method for a vehicle as described in any of the above embodiments.

[0045] In another embodiment provided in this application, a computer program product containing instructions is also provided, which, when run on a computer, causes the computer to execute the wireless charging control method for a vehicle as described in any of the above embodiments.

[0046] Those skilled in the art will understand that the embodiments in this application can be provided as methods, systems, or computer program products. Therefore, the embodiments in this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the embodiments in this application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0047] This application describes embodiments of methods, apparatus (systems), and computer program products according to embodiments of this application with reference to flowchart illustrations and / or block diagrams. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0048] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0049] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0050] Although preferred embodiments have been described in this application, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of this application.

[0051] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this application without departing from the spirit and scope of the embodiments of this application. Therefore, if these modifications and variations to the embodiments of this application fall within the scope of this application and its equivalents, then these modifications and variations are also intended to be included in the embodiments of this application.

Claims

1. A wireless charging control system for a vehicle, characterized in that, The system includes: a server, a phased coil array, and sensing components; The sensing component is used to collect vehicle data within the wireless charging area of ​​the vehicle. The server is configured to determine the location of at least one vehicle to be charged based on the vehicle data, and control the phased array to charge the corresponding vehicle based on the location of the at least one vehicle to be charged.

2. The system as described in claim 1, characterized in that, The phased-array coil includes multiple transmitting units; each transmitting unit is used to collaboratively generate at least one focused beam according to the control commands issued by the server. The number of focused beams is the same as the number of vehicles to be charged; Each transmitting unit includes: a tunable inductor, a power amplifier, and a phase control component; the power amplifier is connected to both the tunable inductor and the phase control component. The phase control component is also connected to the server.

3. The system as described in claim 2, characterized in that, The system also includes a receiving component installed on each vehicle to be charged; The receiving component is used to receive the focused beam generated by the phased coil array, convert the electromagnetic energy of the focused beam into direct current to charge the corresponding vehicle to be charged, and obtain the received power and first phase difference of the vehicle to be charged.

4. The system as described in claim 3, characterized in that, The server is specifically used for: When the number of vehicles to be charged is 1, the charging parameters of the vehicle to be charged are obtained. Based on the vehicle location of the vehicle to be charged and the unit location of each configured transmitter, calculate the distance between each transmitter and the vehicle location; Based on the distance between each transmitting unit and the vehicle's location and the charging parameters, determine the control parameters for each transmitting unit to focus on the vehicle to be charged; Based on the control parameters corresponding to each transmitting unit, the magnetic fields generated by each transmitting unit are superimposed in phase at the vehicle's location to form a focused beam pointing towards the vehicle to be charged, thereby charging the vehicle.

5. The system as described in claim 4, characterized in that, The server is also used for: The energy receiving power and first phase difference of the vehicle to be charged at the current charging moment are obtained, as well as the control parameters of each transmitting unit at the current charging moment are determined. Based on the energy receiving power and the first phase difference, the control parameters of each transmitting unit are corrected to obtain the target control parameters of each transmitting unit. Based on the target control parameters corresponding to each transmitting unit, each transmitting unit is controlled to form a focused beam pointing towards the vehicle to be charged at the next charging time of the current charging time.

6. The system as described in claim 4, characterized in that, The server is specifically used for: When the number of vehicles to be charged is not 1, obtain the energy weighting coefficient of each vehicle to be charged. For any vehicle to be charged, the distance between each transmitting unit and the vehicle location is calculated based on the vehicle location and the unit location of each transmitting unit. Based on the energy weighting coefficient of the vehicle to be charged and the distance between each transmitting unit and the vehicle, the control parameters for each transmitting unit to focus on the vehicle to be charged are determined. Based on the control parameters corresponding to each transmitting unit, the magnetic fields generated by each transmitting unit are superimposed in phase at the vehicle positions of each vehicle to be charged, forming multiple focused beams pointing towards each vehicle to be charged, thereby charging each vehicle.

7. The system as described in claim 2, characterized in that, The system also includes an electromagnetic phase-locked ring; The electromagnetic phase-locked loop is connected to both the server and the phased-array coil. The electromagnetic phase-locked loop is used to detect the second phase difference between each focused beam, generate a phase correction signal based on the second phase difference, and send the phase correction signal to the server. The server is also used for: The phase correction signal is received, and the reflection phase of each transmitting unit is adjusted according to the phase correction signal so that the phase difference between multiple focused beams is within a preset range.

8. A wireless charging control method for a vehicle, characterized in that, The method, applied in a server of a wireless charging control system for a vehicle as described in any one of claims 1-7, comprises: Acquire vehicle data within the wireless charging area collected by the sensing components; Based on the vehicle data, determine the location of at least one vehicle to be charged; Based on the vehicle location of at least one vehicle to be charged, the phased coil array is controlled to charge the corresponding vehicle.

9. An electronic device, characterized in that, The electronic device includes a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus; Memory, used to store computer programs; A processor, when executing a program stored in memory, implements the method of claim 8.

10. An unmanned automatic charging station for vehicles, characterized in that, The unmanned automatic charging station for the vehicle includes a phased-array coil, a sensing component, and a server for executing the wireless charging control method for the vehicle as described in claim 8.

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