Vehicle-mounted battery wireless charging method, ground signal transmitting assembly and storage medium

Abstract

The invention provides a vehicle-mounted battery wireless charging method, a ground signal transmitting assembly and a storage medium, and relates to the technical field of vehicle wireless charging. The ground signal transmitting assembly located in the parking area responds to the alignment instruction from the vehicle-mounted signal receiving assembly located on the vehicle and executes the operation of moving in the Z-axis direction of the vehicle coordinate system; under the condition that it is detected that the vehicle-mounted signal receiving assembly is attached to the vehicle-mounted signal receiving assembly, the operation of moving downwards by a preset first distance in the Z-axis direction of the vehicle coordinate system is executed, the first distance is smaller than a set distance threshold value, and a target position with the maximum mutual inductance current with the vehicle-mounted signal receiving assembly is found in the X-axis direction and the Y-axis direction of the vehicle coordinate system; the ground signal transmitting assembly moves to the target position, wireless charging operation on the vehicle-mounted battery is executed based on the vehicle-mounted signal receiving assembly, the highest energy transmission efficiency of the ground signal transmitting assembly and the vehicle-mounted signal receiving assembly can be achieved, and damage to a chassis of the vehicle and the ground signal transmitting assembly is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle wireless charging, and in particular to a vehicle-mounted battery wireless charging method, a ground signal transmitting component, and a storage medium. Background Art

[0002] Wireless charging of a vehicle's battery pack is a technology that enables contactless charging of electric vehicles through electromagnetic induction or electromagnetic resonance. This technology charges the vehicle's battery pack by transferring energy through a high-frequency alternating magnetic field between a ground-based signal transmitter and an onboard signal receiver.

[0003] Currently, during charging, the energy transfer efficiency between the ground signal transmitting component and the vehicle-mounted signal receiving component is low, and when the vehicle is used after charging is completed, the vehicle chassis is easily scratched against the ground signal transmitting component, causing damage to the vehicle chassis and the ground signal transmitting component. Summary of the Invention

[0004] The present application provides a vehicle-mounted battery wireless charging method, a ground signal transmitting component and a storage medium, which are used to solve the problem in the prior art that during charging, the energy transfer efficiency between the ground signal transmitting component and the vehicle-mounted signal receiving component is low, and when the vehicle is used after charging is completed, the vehicle chassis is easily scratched with the ground signal transmitting component.

[0005] In a first aspect, the present application provides a method for wirelessly charging a vehicle battery. The method provided by the present application includes:

[0006] The ground signal transmitting component in the parking area moves along the Z-axis direction of the vehicle coordinate system in response to an alignment instruction from the vehicle-mounted signal receiving component on the vehicle;

[0007] When the ground signal transmitting component detects that it is in contact with the vehicle-mounted signal receiving component, the ground signal transmitting component moves downward along the Z-axis of the vehicle coordinate system by a preset first distance, and the first distance is less than a set distance threshold;

[0008] The ground signal transmitting component searches for the target position where the mutual inductance current between the ground signal transmitting component and the vehicle signal receiving component is the largest in the X-axis and Y-axis directions of the vehicle coordinate system;

[0009] The ground signal transmitting component moves to the target location and performs wireless charging operation on the vehicle battery based on the vehicle signal receiving component.

[0010] In some embodiments, during the wireless charging operation, the method provided by the present application further includes:

[0011] If the ground signal transmitting component detects that the alignment instruction with the vehicle signal receiving component is in place again, it moves downward along the Z-axis direction of the vehicle coordinate system until the ground signal transmitting component detects that it is a preset first distance away from the vehicle signal receiving component.

[0012] In some embodiments, the ground signal transmitting assembly includes a pressure sensor, and detecting that the ground signal transmitting assembly is in contact with the vehicle-mounted signal receiving assembly includes:

[0013] When it is determined that the pressure value detected by the pressure sensor is greater than the set pressure threshold, it is detected that the vehicle-mounted signal receiving component is in contact with the vehicle.

[0014] In some embodiments, the ground signal transmitting component searches for a target position where the mutual inductance current between the ground signal transmitting component and the vehicle signal receiving component is the largest in the X-axis and Y-axis directions of the vehicle coordinate system, including:

[0015] The ground signal transmitting component first moves to a first preset limit position in the X-axis direction of the vehicle coordinate system, and then moves from the first preset limit position to a second preset limit position;

[0016] When the ground signal transmitting component moves from the first preset limit position to the second preset limit position, the mutual inductance current between the ground signal transmitting component and the vehicle-mounted signal receiving component is detected in real time;

[0017] The ground signal transmitting component records the position where the mutual inductance current is the largest in the X-axis direction;

[0018] The ground signal transmitting component first moves to the third preset limit position in the Y-axis direction of the vehicle coordinate system, and then moves from the third preset limit position to the fourth preset limit position;

[0019] When the ground signal transmitting component moves from the third preset limit position to the fourth preset limit position, the ground signal transmitting component detects the mutual inductance current between the ground signal receiving component and the vehicle signal receiving component in real time;

[0020] The ground signal transmitting component records the position where the mutual inductance current is the largest in the Y-axis direction;

[0021] The ground signal transmitting component determines the target position where the mutual inductance current is the largest between the ground signal transmitting component and the vehicle signal receiving component based on the position where the mutual inductance current is the largest in the X-axis direction and the position where the mutual inductance current is the largest in the Y-axis direction.

[0022] In some embodiments, before performing the operation of moving along the Z-axis direction of the vehicle coordinate system, the method provided by the present application further includes:

[0023] The ground signal transmitting component detects whether there are metal objects within a preset distance range; if there are metal objects, the vehicle-mounted signal receiving component reports a prompt message indicating charging failure to the vehicle computer;

[0024] The operation of moving along the Z-axis direction of the vehicle coordinate system is performed, including: if no metal object exists, the operation of moving along the Z-axis direction of the vehicle coordinate system is performed.

[0025] In some embodiments, after the ground signal transmitting assembly moves to the target location and the vehicle-mounted signal receiving assembly performs a wireless charging operation on the vehicle-mounted battery, the method provided by the present application further includes:

[0026] The ground signal transmitting component moves back from the target position to the preset initial position in response to the charging end instruction of the vehicle-mounted signal receiving component.

[0027] In some embodiments, before the ground signal transmitting assembly in the parking area responds to the alignment instruction from the vehicle-mounted signal receiving assembly on the vehicle, the method provided by the present application further includes:

[0028] The vehicle controller responds to the wireless charging start instruction from the vehicle computer and sends a wireless charging request to the vehicle signal receiving component;

[0029] The vehicle-mounted signal receiving component sends an alignment instruction to the ground signal transmitting component in response to the wireless charging request.

[0030] In a second aspect, the present application also provides a ground signal transmission component for executing the method provided in the first aspect of the present application.

[0031] In a third aspect, the present application further provides a storage medium storing a computer program. When the computer program is executed by a processor, the computer executes the method provided in the first aspect of the present application.

[0032] In a fourth aspect, the present application also provides a computer program product, including a computer program, which, when executed, enables the ground signal transmission component to execute the method provided in the first aspect of the present application.

[0033] The present application provides a method for wirelessly charging an on-board battery, a ground signal transmitting assembly, and a storage medium. The ground signal transmitting assembly, located in a parking area, responds to an alignment instruction from an on-board signal receiving assembly located on the vehicle and moves along the Z-axis of the vehicle coordinate system. Upon detecting alignment with the on-board signal receiving assembly, the ground signal transmitting assembly moves a preset first distance down the Z-axis of the vehicle coordinate system, where the first distance is less than a set distance threshold. It is understood that when the ground signal transmitting assembly and the on-board signal receiving assembly are separated by the first distance, the ground signal transmitting assembly will not rub against the vehicle chassis during movement. Furthermore, the ground signal transmitting assembly searches for a target position in the X and Y directions of the vehicle coordinate system where the mutual induction current between the ground signal transmitting assembly and the on-board signal receiving assembly is maximized. The ground signal transmitting assembly moves to the target position and, based on the on-board signal receiving assembly, wireless charging of the vehicle battery is performed. When the first distance is less than the set distance threshold and the ground signal transmitting assembly moves to the target position, energy transfer efficiency between the ground signal transmitting assembly and the on-board signal receiving assembly is maximized, preventing damage to the vehicle chassis and the ground signal transmitting assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0035] Figure 1 A block diagram showing the circuit module connections of the vehicle-mounted battery wireless charging system provided in an embodiment of the present application;

[0036] Figure 2 A flow chart of a vehicle battery wireless charging method provided in an embodiment of the present application;

[0037] Figure 3 This is a functional module block diagram of the vehicle-mounted battery wireless charging device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0038] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present disclosure. In addition, in the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessary confusion of the concepts of the present disclosure.

[0039] The accompanying drawings illustrate various schematic diagrams of structures according to embodiments of the present disclosure. These figures are not drawn to scale, and for the purpose of clarity, certain details are exaggerated and certain details may be omitted. The shapes of the various regions and layers shown in the figures, as well as their relative sizes and positional relationships, are merely exemplary and may deviate in practice due to manufacturing tolerances or technical limitations. Those skilled in the art may design regions / layers with different shapes, sizes, and relative positions as needed.

[0040] In the context of the present disclosure, when a layer / element is referred to as being "on" another layer / element, it can be directly on the other layer / element or an intervening layer / element may be present therebetween. In addition, if a layer / element is "on" another layer / element in one orientation, it may be "below" the other layer / element when the orientation is reversed.

[0041] The following describes in detail the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0042] This application provides a vehicle-mounted battery wireless charging method, which is applied to a vehicle-mounted battery wireless charging system. Figure 1 As shown, the on-board battery wireless charging system includes a ground signal transmitting component in the parking area and an on-board signal receiving component on the vehicle, a vehicle controller, a charging management module, a relay, and an on-board battery. Among them, the ground signal transmitting component in the parking area and the on-board signal receiving component on the vehicle can generate mutual induction current (wherein, the ground signal transmitting component and the on-board signal receiving component can communicate via wifi signals). The vehicle controller is respectively connected to the on-board signal receiving component and the charging management module, the charging management module is connected to the relay, and the relay is connected between the on-board signal receiving component and the on-board battery. As shown Figure 2 As shown, the method provided in the embodiment of the present application includes:

[0043] S201: The ground signal transmitting component in the parking area moves along the Z-axis direction of the vehicle coordinate system in response to an alignment instruction from the vehicle-mounted signal receiving component on the vehicle.

[0044] Specifically, the vehicle controller can respond to the wireless charging start instruction from the vehicle computer (such as the wireless charging start instruction triggered by the user on the central control screen of the vehicle computer) and send a wireless charging request to the vehicle-mounted signal receiving component; the vehicle-mounted signal receiving component responds to the wireless charging request and sends an alignment instruction to the ground signal transmitting component.

[0045] It should be noted that the ground signal transmission component can detect whether there are metal objects (such as coins, screws, etc.) within a preset distance range. Because metal objects heat up when exposed to the electromagnetic field generated between the ground signal transmission component and the onboard signal reception component, posing a safety hazard, if a metal object is present, the onboard signal reception component reports a charging failure message to the vehicle computer. If no metal object is present, the following step S202 is executed.

[0046] S202: Upon detecting that the ground signal transmitting component is in contact with the vehicle-mounted signal receiving component, the ground signal transmitting component moves downward along the Z-axis of the vehicle coordinate system by a preset first distance, where the first distance is less than a preset distance threshold. For example, if the distance threshold is 2 cm, the first distance may be, but is not limited to, 0.8 cm, 1 cm, or 1.5 cm.

[0047] Exemplarily, the ground signal transmitting component includes a pressure sensor. When it is determined that the pressure value detected by the pressure sensor is greater than a set pressure threshold, it is detected that the ground signal receiving component is in contact with the vehicle.

[0048] S203: The ground signal transmitting component searches for a target position with the largest mutual inductance current with the vehicle-mounted signal receiving component in the X-axis direction and the Y-axis direction of the vehicle coordinate system.

[0049] Specifically, S203 can be implemented as follows:

[0050] Step 1: The ground signal transmitting component first moves to a first preset limit position in the X-axis direction of the vehicle coordinate system, and then moves from the first preset limit position to a second preset limit position.

[0051] Step 2: When the ground signal transmitting component moves from the first preset limit position to the second preset limit position, the mutual inductance current between the ground signal transmitting component and the vehicle-mounted signal receiving component is detected in real time.

[0052] Step 3: The ground signal transmitting component records the position where the mutual inductance current is the largest in the X-axis direction.

[0053] Step 4: The ground signal transmitting component first moves to the third preset limit position in the Y-axis direction of the vehicle coordinate system, and then moves from the third preset limit position to the fourth preset limit position.

[0054] Step 5: When the ground signal transmitting component moves from the third preset limit position to the fourth preset limit position, the mutual inductance current between the ground signal transmitting component and the vehicle-mounted signal receiving component is detected in real time.

[0055] Step 6: The ground signal transmitting component records the position where the mutual inductance current is the largest in the Y-axis direction.

[0056] Step 7: The ground signal transmitting component determines the target position where the mutual inductance current is the largest between the ground signal transmitting component and the vehicle signal receiving component based on the position where the mutual inductance current is the largest in the X-axis direction and the position where the mutual inductance current is the largest in the Y-axis direction.

[0057] For example, the coordinate of the position with the largest mutual inductance current in the X-axis direction is x1; the coordinate of the position with the largest mutual inductance current in the X-axis direction is y1, then the total coordinate of the target position with the largest mutual inductance current between the vehicle-mounted signal receiving component is (x1, y1).

[0058] S204: The ground signal transmitting component moves to the target position, and performs a wireless charging operation on the vehicle battery based on the vehicle signal receiving component.

[0059] For example, the method of performing the wireless charging operation on the vehicle battery based on the vehicle signal receiving component can be specifically implemented as follows:

[0060] The ground signal transmission component sends a charging readiness notification to the onboard signal reception component. In response, the onboard signal reception component sends a high-voltage command to the charging management module. In response to the high-voltage command, the charging management module controls the relay to close and notifies the vehicle controller that the relay has closed. The vehicle controller sends a charging request command to the onboard signal reception component, including a charging current request. The onboard signal reception component forwards the charging request command to the ground signal transmission component. In response, the ground signal transmission component initiates power output, generating a mutual induction current in the onboard signal reception component, which then powers the onboard battery via the relay.

[0061] After S204, if the ground signal transmitting assembly detects alignment with the on-board signal receiving assembly again, it moves downward along the Z-axis of the vehicle coordinate system until it detects a predetermined first distance between it and the on-board signal receiving assembly. This allows the ground signal transmitting assembly to maintain the predetermined first distance between it and the on-board signal receiving assembly during wireless charging if the vehicle's load changes, tire deflation, or downward movement of the air suspension causes the ground signal transmitting assembly to contact the on-board signal receiving assembly. This prevents the ground signal transmitting assembly from rubbing against the chassis during vehicle movement.

[0062] In addition, after S204, the method provided in the embodiment of the present application further includes: the ground signal transmitting component responds to the charging end instruction of the vehicle-mounted signal receiving component and moves back from the target position to the preset initial position.

[0063] Specifically, the onboard signal receiving component can provide feedback on the charging status to the vehicle controller. If the vehicle controller determines that charging is complete based on the charging status, it sends a charge termination instruction to the onboard signal receiving component. In response to the charge termination instruction from the onboard signal receiving component, the ground signal transmitting component moves back from the target position to the preset initial position.

[0064] In summary, embodiments of the present application provide a method for wirelessly charging an on-board battery. In response to an alignment instruction from an on-board signal receiving assembly on a vehicle, a ground signal transmitting assembly located in a parking area moves along the Z-axis of a vehicle coordinate system. Upon detecting alignment with the on-board signal receiving assembly, the ground signal transmitting assembly moves a preset first distance down the Z-axis of the vehicle coordinate system, where the first distance is less than a set distance threshold. It is understood that when the ground signal transmitting assembly is separated from the on-board signal receiving assembly by the first distance, the ground signal transmitting assembly will not rub against the vehicle chassis during vehicle movement. Furthermore, the ground signal transmitting assembly searches for a target position in the X- and Y-axis directions of the vehicle coordinate system where the mutual induction current between the ground signal transmitting assembly and the on-board signal receiving assembly is maximized. The ground signal transmitting assembly moves to the target position, and wireless charging of the vehicle battery is performed based on the on-board signal receiving assembly. When the first distance is less than the set distance threshold and the ground signal transmitting assembly moves to the target position, energy transfer efficiency between the ground signal transmitting assembly and the on-board signal receiving assembly is maximized, preventing damage to the vehicle chassis and the ground signal transmitting assembly.

[0065] like Figure 3 As shown, the embodiment of the present application also provides a vehicle-mounted battery wireless charging device. It should be noted that the basic principle and technical effects of the vehicle-mounted battery wireless charging device provided by the embodiment of the present application are the same as those of the above embodiment. For the sake of brief description, for parts not mentioned in the embodiment of the present application, please refer to the corresponding content in the above embodiment. The device provided by the embodiment of the present application includes a mobile control unit, a position finding unit, and a wireless charging unit, wherein,

[0066] The mobile control unit is used for the ground signal transmitting component in the parking area, and executes the operation of moving along the Z-axis direction of the vehicle coordinate system in response to the alignment instruction from the vehicle-mounted signal receiving component on the vehicle.

[0067] The mobile control unit is also used to execute an operation of moving a preset first distance along the Z-axis direction of the vehicle coordinate system when it is detected that it is in contact with the vehicle-mounted signal receiving component, and the first distance is less than a set distance threshold.

[0068] The position search unit is used to search for the target position where the mutual inductance current between the target position and the vehicle-mounted signal receiving component is the largest in the X-axis direction and the Y-axis direction of the vehicle coordinate system.

[0069] The wireless charging unit is used to move to a target location and perform wireless charging operations on the vehicle battery based on the vehicle signal receiving component.

[0070] In some embodiments, the mobile control unit is used to execute a downward movement operation along the Z-axis direction of the vehicle coordinate system if it detects that the alignment instruction with the vehicle-mounted signal receiving component is again aligned, until the ground signal transmitting component detects a preset first distance from the vehicle-mounted signal receiving component.

[0071] In some embodiments, the ground signal transmitting component includes a pressure sensor and a mobile control unit, which is specifically used to detect the fit with the vehicle-mounted signal receiving component when it is determined that the pressure value detected by the pressure sensor is greater than a set pressure threshold.

[0072] In some embodiments, the position finding unit is specifically used to move in the X-axis direction of the vehicle coordinate system to the first preset limit position in the X-axis direction, and then move from the first preset limit position to the second preset limit position; in the process of moving from the first preset limit position to the second preset limit position, detect the mutual inductance current between the vehicle signal receiving component in real time; record the position where the mutual inductance current is the largest in the X-axis direction; in the Y-axis direction of the vehicle coordinate system, first move to the third preset limit position in the Y-axis direction, and then move from the third preset limit position to the fourth preset limit position; in the process of moving from the third preset limit position to the fourth preset limit position, detect the mutual inductance current between the vehicle signal receiving component in real time; record the position where the mutual inductance current is the largest in the Y-axis direction; determine the target position where the mutual inductance current is the largest with the vehicle signal receiving component based on the position where the mutual inductance current is the largest in the X-axis direction and the position where the mutual inductance current is the largest in the Y-axis direction.

[0073] In some embodiments, the apparatus provided in the embodiments of the present application further includes:

[0074] A metal object detection unit is used to detect whether there are metal objects within a preset distance range;

[0075] A prompt information reporting unit, configured to report a prompt information indicating charging failure to the vehicle computer based on the vehicle-mounted signal receiving component if a metal object is present;

[0076] The movement control unit is configured to execute movement along the Z-axis direction of the vehicle coordinate system if no metal object exists.

[0077] In some embodiments, the apparatus provided in the embodiments of the present application further includes:

[0078] The mobile control unit is used to move back from the target position to a preset initial position in response to the charging end instruction of the vehicle-mounted signal receiving component.

[0079] In addition, an embodiment of the present application also provides a ground signal transmission component for executing the method provided in the above embodiment of the present application.

[0080] In addition, an embodiment of the present application further provides a storage medium, which stores a computer program. When the computer program is executed by a processor, the computer executes the method provided in the above embodiment of the present application.

[0081] In addition, an embodiment of the present application also provides a computer program product, including a computer program. When the computer program is executed, the ground signal transmission component executes the method provided in the above embodiment.

[0082] While the above description does not provide detailed technical details regarding the patterning of each layer, those skilled in the art will appreciate that various technical means can be employed to form layers, regions, and the like in desired shapes. Furthermore, those skilled in the art may devise methods that differ from those described above to achieve the same structure. Furthermore, while each embodiment has been described separately, this does not mean that the measures in each embodiment cannot be advantageously combined.

[0083] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0084] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the preset first distance of the present application. If these modifications and modifications of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these changes and modifications.

Claims

1. A method for wireless charging of a vehicle battery, characterized in that: The method comprises: The ground signal transmitting component in the parking area moves along the Z-axis direction of the vehicle coordinate system in response to an alignment instruction from the vehicle-mounted signal receiving component on the vehicle; When the ground signal transmitting component detects that it is in contact with the vehicle-mounted signal receiving component, the ground signal transmitting component moves downward along the Z-axis of the vehicle coordinate system by a preset first distance, and the first distance is less than a set distance threshold; The ground signal transmitting component searches for a target position with the largest mutual inductance current with the vehicle-mounted signal receiving component in the X-axis direction and the Y-axis direction of the vehicle coordinate system; The ground signal transmitting component moves to the target position, and performs a wireless charging operation on the vehicle battery based on the vehicle signal receiving component.

2. The method according to claim 1, characterized in that During the wireless charging operation, the method further includes: If the ground signal transmitting component detects that the alignment instruction with the vehicle-mounted signal receiving component is in alignment again, it performs a downward movement operation along the Z-axis direction of the vehicle coordinate system until the ground signal transmitting component detects that it is a preset first distance away from the vehicle-mounted signal receiving component.

3. The method according to claim 1, characterized in that The ground signal transmitting component includes a pressure sensor, and the detecting that the ground signal receiving component is in contact with the vehicle signal receiving component includes: When it is determined that the pressure value detected by the pressure sensor is greater than a set pressure threshold, it is detected that the vehicle-mounted signal receiving component is in contact with the vehicle-mounted signal receiving component.

4. The method according to claim 1, wherein The ground signal transmitting component searches for a target position with the largest mutual inductance current with the vehicle-mounted signal receiving component in the X-axis direction and the Y-axis direction of the vehicle coordinate system, including: The ground signal transmitting assembly first moves to a first preset limit position in the X-axis direction of the vehicle coordinate system, and then moves from the first preset limit position to a second preset limit position; The ground signal transmitting component detects the mutual inductance current between the ground signal transmitting component and the vehicle-mounted signal receiving component in real time during the process of moving from the first preset limit position to the second preset limit position; The ground signal transmitting component records the position where the mutual inductance current is the largest in the X-axis direction; The ground signal transmitting assembly first moves to a third preset limit position in the Y-axis direction of the vehicle coordinate system, and then moves from the third preset limit position to a fourth preset limit position; The ground signal transmitting component detects the mutual inductance current between the ground signal transmitting component and the vehicle-mounted signal receiving component in real time during the process of moving from the third preset limit position to the fourth preset limit position; The ground signal transmitting component records the position where the mutual inductance current is the largest in the Y-axis direction; The ground signal transmitting component determines the target position with the largest mutual inductance current with the vehicle-mounted signal receiving component based on the position with the largest mutual inductance current in the X-axis direction and the position with the largest mutual inductance current in the Y-axis direction.

5. The method according to claim 1, wherein Before executing the operation of moving along the Z-axis direction of the vehicle coordinate system, the method further includes: The ground signal transmitting component detects whether there is a metal object within a preset distance range; if the metal object is present, the vehicle-mounted signal receiving component reports a prompt message indicating charging failure to the vehicle computer; The operation of moving along the Z-axis direction of the vehicle coordinate system includes: if the metal object does not exist, the operation of moving along the Z-axis direction of the vehicle coordinate system is performed.

6. The method according to any one of claims 1 to 5, characterized in that: After the ground signal transmitting component moves to the target location and the vehicle-mounted battery is wirelessly charged based on the vehicle-mounted signal receiving component, the method further includes: The ground signal transmitting component moves back from the target position to a preset initial position in response to the charging end instruction from the vehicle-mounted signal receiving component.

7. The method according to any one of claims 1 to 5, characterized in that: Before the ground signal transmitting component in the parking area responds to the alignment instruction from the vehicle-mounted signal receiving component on the vehicle, the method further includes: The vehicle controller sends a wireless charging request to the vehicle-mounted signal receiving component in response to the wireless charging start instruction from the vehicle computer; The vehicle-mounted signal receiving component sends an alignment instruction to the ground signal transmitting component in response to the wireless charging request.

8. A ground signal transmitting component, characterized in that: Used to execute the method according to any one of claims 1 to 6.

9. A storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the computer is caused to perform the method according to any one of claims 1 to 6.

10. A computer program product comprising a computer program, characterized in that When the computer program is executed, the ground signal transmitting component is caused to execute the method as claimed in any one of claims 1 to 6.

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