Electric vehicle wireless charging method, device, equipment and storage medium

Abstract

The present invention discloses a wireless charging method, apparatus, device, and storage medium for electric vehicles, relating to the field of wireless charging technology. The method includes: when an electric vehicle is detected to have entered a charging area, a power supply device obtains parameter information of the electric vehicle, wherein the parameter information includes the rated voltage of the electric vehicle's battery; the power supply device converts a first voltage output by the power supply device into a second voltage based on the rated voltage, and charges the battery of the electric vehicle via wireless charging technology. The present invention detects whether the electric vehicle has entered the charging area to start or stop the power supply device, thereby avoiding energy waste caused by the power supply device. Furthermore, by charging the electric vehicle via wireless charging technology, the owner does not need to prepare a charging cable or perform wiring operations, thereby solving the problem of complex electric vehicle charging operations.

Description

Technical Field

[0001] The present invention relates to the field of wireless charging technology, and in particular to a method, device, equipment and storage medium for wireless charging of an electric vehicle. Background Art

[0002] Electric bikes are the most convenient way for urban commuters, effectively avoiding traffic jams and navigating both the city and the streets. However, with their widespread adoption, charging has become a new challenge. Many owners park their bikes indoors to charge, sometimes even taking the elevator upstairs. Any mishaps during charging can result in significant losses.

[0003] In addition, in the existing technology, electric vehicles rely on wired charging to replenish battery power. When charging in a public parking lot, the owner needs to connect the electric vehicle to the power supply equipment through a charging cable, and also needs to scan a code or swipe a card to power on. Not only is the operation complicated, but during the charging process, the charging cable is easily unplugged by other owners, causing the electric vehicle to stop charging when the power is insufficient.

[0004] Therefore, existing electric vehicle charging has the technical problems of low safety and complex operation. Summary of the Invention

[0005] The main purpose of the present invention is to provide a wireless charging method, device, equipment and storage medium for electric vehicles, aiming to solve the technical problems of low charging safety and complex operation of electric vehicles in the prior art.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] In a first aspect, the present invention provides a method for wireless charging of an electric vehicle, the method comprising:

[0008] When an electric vehicle is detected to enter the charging area, the power supply device obtains parameter information of the electric vehicle, wherein the parameter information includes the rated voltage of the battery of the electric vehicle;

[0009] The power supply device converts the first voltage output by the power supply device into a second voltage according to the rated voltage, and charges the battery of the electric vehicle through wireless charging technology.

[0010] Optionally, in the above-mentioned electric vehicle wireless charging method, when detecting that the electric vehicle enters the charging area, the power supply device obtains parameter information of the electric vehicle, wherein the parameter information includes the rated voltage of the electric vehicle battery, which includes:

[0011] When a handshake initiating device and a handshake responding device establish a communication connection, it is determined that the electric vehicle enters a charging area, wherein the handshake initiating device is arranged in the charging area, and the handshake responding device is arranged on the electric vehicle;

[0012] The power supply device obtains parameter information of the electric vehicle, wherein the parameter information includes the rated voltage of the battery of the electric vehicle.

[0013] Optionally, in the above-mentioned wireless charging method for an electric vehicle, the parameter information includes a first power level, and before the step of converting the first voltage output by the power supply device into a second voltage according to the rated voltage and charging the battery of the electric vehicle using wireless charging technology, the method further includes:

[0014] The power supply device obtains a first amount of electricity of the electric vehicle;

[0015] When the first power level is less than a charging power threshold, the power supply device starts to output a first voltage.

[0016] Optionally, in the above-mentioned wireless charging method for an electric vehicle, the step of converting the first voltage output by the power supply device into a second voltage according to the rated voltage, and charging the battery of the electric vehicle using wireless charging technology includes:

[0017] The power supply device converts the first voltage output by the power supply device into a second voltage according to the rated voltage; the power supply device transmits charging microwaves to the electric vehicle according to the second voltage;

[0018] When the charging microwave is transmitted to the electric vehicle, the electric vehicle is used to convert the charging microwave into a DC regulated power supply;

[0019] The electric vehicle is further configured to convert the third voltage of the DC regulated power supply into a fourth voltage for charging the electric vehicle.

[0020] Optionally, in the above-mentioned wireless charging method for electric vehicles, after the step of converting the first voltage output by the power supply device into a second voltage according to the rated voltage and charging the battery of the electric vehicle using wireless charging technology, the method further includes:

[0021] The power supply device obtains a second amount of power from the battery;

[0022] When the second electrical quantity is greater than the power-off threshold, the power supply device stops outputting the first voltage.

[0023] In a second aspect, the present invention provides a wireless charging device for an electric vehicle, the device comprising:

[0024] A detection module, configured to, when detecting that an electric vehicle enters a charging area, cause the power supply device to obtain parameter information of the electric vehicle, wherein the parameter information includes the rated voltage of the battery of the electric vehicle;

[0025] A power supply module is used for converting the first voltage output by the power supply device into a second voltage according to the rated voltage, so as to charge the battery of the electric vehicle through wireless charging technology.

[0026] In a third aspect, the present invention provides a wireless charging device for an electric vehicle, comprising a processor and a memory, wherein a charging program is stored in the memory, and when the charging program is executed by the processor, the above-mentioned wireless charging method for an electric vehicle is implemented.

[0027] In a fourth aspect, the present invention provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by one or more processors, the above-mentioned wireless charging method for electric vehicles is implemented.

[0028] The above one or more technical solutions provided by the present invention may have the following advantages or at least achieve the following technical effects:

[0029] The present invention proposes a wireless charging method, device, equipment and storage medium for electric vehicles. By detecting whether the electric vehicle has entered the charging area, the power supply equipment is started or stopped, thereby avoiding energy waste caused by the power supply equipment. By obtaining the rated voltage of the electric vehicle and converting the output first voltage into a second voltage, the electric vehicle is made safer during the charging process, thereby avoiding the final output voltage of the power supply equipment being inconsistent with the rated voltage of the electric vehicle, which may lead to safety accidents. In addition, by charging the electric vehicle through wireless charging technology, the owner does not need to prepare a charging cable or perform wiring operations, thereby solving the problem of complicated charging operations for electric vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these provided drawings without paying any creative work.

[0031] Figure 1 This is a flow chart of a first embodiment of a wireless charging method for an electric vehicle according to the present invention;

[0032] Figure 2 This is a schematic diagram of the hardware structure of the wireless charging device for electric vehicles involved in the present invention;

[0033] Figure 3 FIG. 1 is a schematic diagram of the functional modules of the first embodiment of the wireless charging device for electric vehicles according to the present invention.

[0034] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0035] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0036] It should be noted that in the present invention, the terms "include", "comprise" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "include..." does not exclude the presence of other identical elements in the process, method, article or system comprising the element. In the present invention, if there is a description involving "first", "second", etc., the description of "first", "second", etc. is only for descriptive purposes and cannot be understood as indicating or implying its relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. In addition, the technical solutions of the various embodiments can be combined with each other, but this is based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0037] Example 1

[0038] Reference Figure 1 A flow chart is provided, which proposes a first embodiment of a wireless charging method for an electric vehicle according to the present invention, and the wireless charging method for an electric vehicle is applied to a wireless charging device for an electric vehicle.

[0039] Electric vehicle wireless charging equipment refers to terminal equipment or network equipment that can achieve network connection. Electric vehicle wireless charging equipment can be terminal equipment such as mobile phones, computers, tablets, embedded industrial computers, or network equipment such as servers and cloud platforms.

[0040] like Figure 2 FIG2 is a schematic diagram of the hardware structure of a wireless charging device for electric vehicles. The wireless charging device for electric vehicles may include: a processor 1001, such as a CPU (Central Processing Unit), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005.

[0041] Those skilled in the art will understand that Figure 2 The hardware structure shown in the figure does not constitute a limitation on the wireless charging device for electric vehicles of the present invention, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0042] Specifically, the communication bus 1002 is used to implement connection and communication between these components;

[0043] The user interface 1003 is used to connect to the client and perform data communication with the client. The user interface 1003 may include an output unit, such as a display screen, and an input unit, such as a keyboard;

[0044] The network interface 1004 is used to connect to the backend server and perform data communication with the backend server. The network interface 1004 may include an input / output interface, such as a standard wired interface or a wireless interface, such as a Wi-Fi interface.

[0045] The memory 1005 is used to store various types of data, which may include, for example, instructions for any application or method in the electric vehicle wireless charging device, as well as application-related data. The memory 1005 may be a high-speed RAM memory or a stable memory, such as a disk memory. Optionally, the memory 1005 may also be a storage device independent of the processor 1001, as described in detail in the following. Figure 2 , the memory 1005 may include an operating system, a network communication module, a user interface module and a charging program;

[0046] The processor 1001 is configured to call the charging program stored in the memory 1005 and perform the following operations:

[0047] When an electric vehicle is detected entering a charging area, the power supply device obtains parameter information of the electric vehicle, wherein the parameter information includes the rated voltage of the electric vehicle battery; the power supply device converts the first voltage output by the power supply device into a second voltage according to the rated voltage, and charges the battery of the electric vehicle through wireless charging technology.

[0048] Based on the above electric vehicle wireless charging equipment, the following Figure 1The flow chart shown in FIG. 1 is a flow chart that describes in detail the wireless charging method for electric vehicles of this embodiment. The method may include the following steps:

[0049] Step S10: When an electric vehicle is detected to enter a charging area, the power supply device obtains parameter information of the electric vehicle, wherein the parameter information includes the rated voltage of the battery of the electric vehicle.

[0050] Specifically, the charging area is an area that can normally receive microwaves emitted by the power supply equipment, and the method for detecting whether the electric vehicle has entered the charging area can be through one of image recognition technology, infrared sensing technology or gravity sensing technology. Taking gravity sensing technology as an example, a gravity sensor can be set below the charging area. When the electric vehicle enters the charging area, the gravity signal is obtained through the gravity sensor to confirm that the electric vehicle has entered the charging area; the parameter information of the electric vehicle can be obtained through wireless communication with a processor set on the electric vehicle, wherein the processor can obtain the rated voltage of the battery by pre-recording the rated voltage of the battery.

[0051] Step S30: the power supply device converts the first voltage output by the power supply device into a second voltage according to the rated voltage, and charges the battery of the electric vehicle through wireless charging technology.

[0052] Specifically, the rated voltage is the rated voltage of the battery charging, the voltage originally output by the power supply device is the first voltage, and the second voltage can be the rated voltage of the battery to meet the charging needs of the electric vehicle. At the same time, the second voltage can also be a voltage value slightly larger than the rated voltage. Taking the rated voltage of 72V as an example, the second voltage can be 72V, or a value between 72V and 75V; the wireless charging technology adopts one of the radio wave type, nuclear magnetic resonance type or electromagnetic induction type.

[0053] The electric vehicle wireless charging method provided in this embodiment detects whether the electric vehicle has entered the charging area to start or stop the operation of the power supply equipment, thereby avoiding energy waste caused by the power supply equipment; by obtaining the rated voltage of the electric vehicle and converting the output first voltage into a second voltage, the electric vehicle is made safer during the charging process, avoiding the final output voltage of the power supply equipment and the rated voltage of the electric vehicle being inconsistent, which may lead to safety accidents; in addition, by charging the electric vehicle through wireless charging technology, there is no need for the owner to prepare a charging cable and perform wiring, etc., which solves the problem of complex electric vehicle charging operations.

[0054] Example 2

[0055] Based on the same inventive concept, a second embodiment of the electric vehicle wireless charging method of the present invention is proposed. The electric vehicle wireless charging method is applied to an electric vehicle wireless charging device.

[0056] The electric vehicle wireless charging method may include the following steps:

[0057] Step S10: When an electric vehicle is detected to enter a charging area, the power supply device obtains parameter information of the electric vehicle, wherein the parameter information includes the rated voltage of the battery of the electric vehicle.

[0058] Step S20: the power supply device obtains a first amount of power of the electric vehicle;

[0059] When the first power level is less than a charging power threshold, the power supply device starts to output a first voltage.

[0060] Specifically, the first power level is the power level of the electric vehicle when it enters the charging area. When the first power level is less than the charging power threshold, the power supply device begins to output the first voltage. When the first power level is greater than the charging power threshold, the power supply device remains in standby mode and does not output the first voltage. By detecting whether the first power level of the electric vehicle exceeds the charging power threshold, charging of a fully charged electric vehicle can be avoided, protecting the battery and preventing energy waste.

[0061] Step S30: the power supply device converts the first voltage output by the power supply device into a second voltage according to the rated voltage, and charges the battery of the electric vehicle through wireless charging technology.

[0062] Step S40: the power supply device obtains a second amount of power of the battery;

[0063] When the second electrical quantity is greater than the power-off threshold, the power supply device stops outputting the first voltage.

[0064] Specifically, the second electric quantity is the real-time electric quantity of the electric vehicle during the charging process. The first voltage output of the power supply device is controlled by obtaining the second electric quantity of the battery and determining whether the second electric quantity exceeds a threshold.

[0065] Furthermore, step S10 may include:

[0066] Step S11: When a handshake initiating device and a handshake responding device establish a communication connection, it is determined that the electric vehicle enters a charging area, wherein the handshake initiating device is arranged in the charging area, and the handshake responding device is arranged on the electric vehicle.

[0067] Specifically, the power supply device sends a handshake request message to the electric vehicle's handshake responder through a handshake initiator. The handshake responder then sends a handshake response message to the handshake initiator. When the keys or identifiers of the handshake initiator and the handshake responder match, the handshake initiator and the handshake responder establish a communication connection. By determining whether the handshake initiator and the handshake responder have established a communication connection, it is confirmed whether the electric vehicle has entered the charging area, which can reduce the false positive rate and avoid wasting energy in the power supply device.

[0068] Step S12: The power supply device obtains parameter information of the electric vehicle, wherein the parameter information includes the rated voltage of the battery of the electric vehicle.

[0069] Furthermore, step S30 may include:

[0070] Step S31: the power supply device converts the first voltage output by the power supply device into a second voltage according to the rated voltage, and the power supply device transmits charging microwaves to the electric vehicle according to the second voltage.

[0071] Step S32: When the charging microwave is transmitted to the electric vehicle, the electric vehicle is used to convert the charging microwave into a DC regulated power supply.

[0072] Specifically, multiple antenna matrices are provided on the electric vehicle, and all antenna matrices are connected to the microwave charging RF receiving module through RF connectors. The microwave charging RF receiving module receives energy signals, and the received energy information can be converted into a waveform of the required frequency through a filtering and rectifying circuit to achieve the effect of stabilizing the energy signal. In addition, the energy signal can be converted into a DC regulated power supply through an RF-RC radio frequency to DC current module.

[0073] Step S33: the electric vehicle is further configured to convert the third voltage of the DC regulated power supply into a fourth voltage for charging the electric vehicle.

[0074] Specifically, the processor of the electric vehicle is also used to monitor the entire charging process. According to the different charging states, the third voltage is converted into a fourth voltage for charging the electric vehicle, thereby further improving the charging safety. The charging process includes trickle charging, constant current charging, constant voltage charging, charging repair and charging start / stop, etc. Preferably, the conversion of the third voltage into the fourth voltage can be achieved by a DC-DC converter provided on the electric vehicle.

[0075] The electric vehicle wireless charging method provided in this embodiment can protect the battery well and avoid wasting electric energy by obtaining the first and second electric energy of the battery and controlling whether the power supply device outputs the first voltage according to the first and second electric energy of the battery. In addition, the present invention can reduce the misjudgment rate and further avoid wasting electric energy of the power supply device by judging whether a communication connection is established between the handshake initiating device and the handshake responding device. It is worth noting that the present invention can convert the third voltage into a fourth voltage for charging the electric vehicle, further avoiding wasting electric energy and protecting the battery.

[0076] Example 3

[0077] Based on the same invention concept, Figure 3 , a first embodiment of the wireless charging device for electric vehicles of the present invention is proposed, and the wireless charging device for electric vehicles can be a virtual device applied to wireless charging equipment for electric vehicles.

[0078] The following combination Figure 3 The functional module diagram shown in FIG. 1 is a detailed description of the wireless charging device for electric vehicles provided in this embodiment. The device may include:

[0079] The detection module 100 is configured to, when detecting that an electric vehicle enters a charging area, cause the power supply device to obtain parameter information of the electric vehicle, wherein the parameter information includes the rated voltage of the battery of the electric vehicle;

[0080] The power supply module 200 is used for converting the first voltage output by the power supply device into a second voltage according to the rated voltage, so as to charge the battery of the electric vehicle through wireless charging technology.

[0081] It should be noted that the functions that can be realized by each module in the electric vehicle wireless charging device provided in this embodiment and the corresponding technical effects achieved can refer to the description of the specific implementation methods in each embodiment of the electric vehicle wireless charging method of the present invention. For the sake of brevity of the description, they will not be repeated here.

[0082] Example 4

[0083] Based on the same invention concept, Figure 2 Schematic diagram of the hardware structure, this embodiment provides an electric vehicle wireless charging device, the electric vehicle wireless charging device may include a processor and a memory, the memory stores a charging program, and when the charging program is executed by the processor, all or part of the steps of each embodiment of the electric vehicle wireless charging method of the present invention are implemented.

[0084] Specifically, electric vehicle wireless charging equipment refers to terminal equipment or network equipment that can achieve network connection. It can be terminal equipment such as mobile phones, computers, tablets, portable computers, or network equipment such as servers and cloud platforms.

[0085] It is understood that the electric vehicle wireless charging device may also include a communication bus, a user interface, and a network interface. The communication bus is used to connect and communicate between these components; the user interface is used to connect to and communicate data with the client, and may include an output unit, such as a display screen, and an input unit, such as a keyboard; the network interface is used to connect to and communicate data with the backend server, and may include an input / output interface, such as a standard wired interface or a wireless interface.

[0086] The memory is used to store various types of data, which may include, for example, instructions for any application or method in the electric vehicle wireless charging device, as well as application-related data. The memory can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), random access memory (RAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk. Optionally, the memory can also be a storage device independent of the processor.

[0087] The processor is used to call the charging program stored in the memory and execute the above-mentioned electric vehicle wireless charging method. The processor can be an application specific integrated circuit (ASIC), a digital signal processor (DSP), a digital signal processing device (DSPD), a programmable logic device (PLD), a field programmable gate array (FPGA), a controller, a microcontroller, a microprocessor or other electronic components, and is used to execute all or part of the steps of each embodiment of the above-mentioned electric vehicle wireless charging method.

[0088] Example 5

[0089] Based on the same inventive concept, this embodiment provides a computer-readable storage medium, such as a flash memory, a hard disk, a multimedia card, a card-type memory (for example, an SD or DX memory, etc.), a random access memory (RAM), a static random access memory (SRAM), a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a magnetic memory, a disk, an optical disk, a server, etc., wherein a computer program is stored on the storage medium, and the computer program can be executed by one or more processors. When the computer program is executed by the processor, all or part of the steps of each embodiment of the electric vehicle wireless charging method of the present invention can be implemented.

[0090] It should be noted that the serial numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above embodiments are merely optional embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structures or equivalent process transformations made by utilizing the contents of the present description and drawings under the inventive concept of the present invention, or directly or indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. A wireless charging method for an electric vehicle, characterized in that: The method comprises: When an electric vehicle is detected to enter the charging area, the power supply device obtains parameter information of the electric vehicle, wherein the parameter information includes the rated voltage of the battery of the electric vehicle; The power supply device converts the first voltage output by the power supply device into a second voltage according to the rated voltage, and charges the battery of the electric vehicle through wireless charging technology; The step of converting the first voltage output by the power supply device into a second voltage according to the rated voltage, and charging the battery of the electric vehicle through wireless charging technology includes: The power supply device converts the first voltage output by the power supply device into a second voltage according to the rated voltage, and the power supply device transmits charging microwaves to the electric vehicle according to the second voltage; When the charging microwave is transmitted to the electric vehicle, the electric vehicle is used to convert the charging microwave into a DC regulated power supply; The electric vehicle is further configured to convert the third voltage of the DC regulated power supply into a fourth voltage for charging the electric vehicle; The second voltage is the rated voltage of the electric vehicle battery or a voltage value greater than the rated voltage of the electric vehicle battery.

2. The electric vehicle wireless charging method according to claim 1, wherein: The step of the power supply device acquiring parameter information of the electric vehicle when detecting that the electric vehicle enters the charging area, wherein the parameter information includes the rated voltage of the battery of the electric vehicle, comprises: When a handshake initiating device and a handshake responding device establish a communication connection, it is determined that the electric vehicle enters a charging area, wherein the handshake initiating device is arranged in the charging area, and the handshake responding device is arranged on the electric vehicle; The power supply device obtains parameter information of the electric vehicle, wherein the parameter information includes the rated voltage of the battery of the electric vehicle.

3. The wireless charging method for an electric vehicle according to claim 2, wherein: The parameter information includes a first power quantity, and before the step of converting the first voltage output by the power supply device into a second voltage according to the rated voltage, and charging the battery of the electric vehicle using wireless charging technology, the method further includes: The power supply device obtains a first amount of electricity of the electric vehicle; When the first power level is less than a charging power threshold, the power supply device starts to output a first voltage.

4. The wireless charging method for an electric vehicle according to claim 1, wherein: After the step of converting the first voltage output by the power supply device into a second voltage according to the rated voltage and charging the battery of the electric vehicle through wireless charging technology, the method further includes: The power supply device obtains a second amount of power from the battery; When the second electrical quantity is greater than the power-off threshold, the power supply device stops outputting the first voltage.

5. A wireless charging device for electric vehicles, characterized in that: The device comprises: A detection module, configured to, when detecting that an electric vehicle enters a charging area, cause the power supply device to obtain parameter information of the electric vehicle, wherein the parameter information includes the rated voltage of the battery of the electric vehicle; A power supply module, used for the power supply device to convert the first voltage output by the power supply device into a second voltage according to the rated voltage, and to charge the battery of the electric vehicle through wireless charging technology, including: The power supply device converts the first voltage output by the power supply device into a second voltage according to the rated voltage, and the power supply device transmits charging microwaves to the electric vehicle according to the second voltage; When the charging microwave is transmitted to the electric vehicle, the electric vehicle is used to convert the charging microwave into a DC regulated power supply; The electric vehicle is further configured to convert the third voltage of the DC regulated power supply into a fourth voltage for charging the electric vehicle; The second voltage is the rated voltage of the electric vehicle battery or a voltage value greater than the rated voltage of the electric vehicle battery.

6. A wireless charging device for electric vehicles, characterized in that: The electric vehicle wireless charging device includes a processor and a memory, wherein a charging program is stored in the memory. When the charging program is executed by the processor, the electric vehicle wireless charging method according to any one of claims 1 to 4 is implemented.

7. A computer-readable storage medium, characterized in that The storage medium stores a computer program, and when the computer program is executed by one or more processors, the electric vehicle wireless charging method according to any one of claims 1 to 4 is implemented.

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