A charging control method, device, system, terminal equipment and storage medium for an electric vehicle

Abstract

The application discloses a charging control method, device and system for an electric vehicle, a terminal device and a storage medium, and receives a vehicle arrival signal; wherein the vehicle arrival signal is generated after detecting that the electric vehicle arrives at a charging position; when the vehicle arrival signal is a wireless charging arrival signal, a wireless charging transmitting device is controlled to generate a first magnetic field according to a test power; wherein the electric vehicle generates an induced current after receiving the first magnetic field, and a coil offset is generated based on the induced current; the coil offset generated by the electric vehicle is received; whether the coil offset is greater than an offset threshold is judged; if yes, the wireless charging transmitting device is controlled to stop generating the first magnetic field according to the test current; if not, the wireless charging transmitting device is controlled to charge the electric vehicle according to the charging power of the electric vehicle. The application greatly improves the charging access efficiency of the electric vehicle.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric vehicle charging, and in particular to a charging control method, device, system, terminal equipment and storage medium for electric vehicles. BACKGROUND

[0002] The traditional charging method is similar to refueling for oil vehicles. The charging gun is taken off from the charging pile, inserted into the charging port, and then the charging process is started to charge the electric vehicle. This charging method requires a series of steps such as parking, taking off the charging gun, inserting it into the corresponding charging port of the vehicle, and starting charging. The charging process is complicated, resulting in low efficiency of electric vehicle charging access.

[0003] Therefore, there is an urgent need for a charging control strategy to solve the problem of low efficiency of electric vehicle charging access. SUMMARY

[0004] The present application provides a charging control method, device, system, terminal equipment and storage medium for electric vehicles to solve the problem of low efficiency of electric vehicle charging access.

[0005] To solve the above problems, an embodiment of the present application provides a charging control method for electric vehicles, comprising:

[0006] receiving a vehicle arrival signal; wherein the vehicle arrival signal is generated after detecting that an electric vehicle arrives at a charging position;

[0007] when the vehicle arrival signal is a wireless charging arrival signal, controlling the wireless charging transmitting device to generate a first magnetic field according to the test power; wherein the electric vehicle generates an induced current after receiving the first magnetic field, and a coil offset is generated based on the induced current;

[0008] receiving the coil offset generated by the electric vehicle;

[0009] determining whether the coil offset is greater than an offset threshold: if yes, controlling the wireless charging transmitting device to stop generating the first magnetic field according to the test current; if no, controlling the wireless charging transmitting device to charge the electric vehicle according to the charging power of the electric vehicle.

[0010] As an improvement of the above scheme, the control of the wireless charging transmitting device to generate the first magnetic field according to the test current comprises:

[0011] performing a self-checking operation to generate a first self-checking result;

[0012] receiving a second self-checking result transmitted by the electric vehicle;

[0013] judging the first self-checking result and the second self-checking result;

[0014] If the first self-checking result is self-checking passed and the second self-checking result is self-checking passed, a start signal is generated, and the wireless charging transmitting device is controlled to generate a first magnetic field according to a test current based on the start signal;

[0015] Otherwise, a warning signal is generated.

[0016] As an improvement of the above scheme, the generating the coil offset based on the induced current includes: collecting an input voltage and an input current of the transmitting coil;

[0017] Based on the induced current, an induced voltage is confirmed;

[0018] The input voltage, the input current, the induced voltage and the induced current are substituted into a preset calculation formula to calculate a power ratio; wherein the calculation formula is specifically:

[0019]

[0020] In the formula, is the power ratio, is the input voltage, is the input current, is the induced voltage, is the induced current;

[0021] According to the power ratio and a preset ratio interval, a ratio interval corresponding to the power ratio is selected as a target ratio interval, and an offset corresponding to the target ratio interval is taken as the coil offset.

[0022] As an improvement of the above scheme, before the controlling the wireless charging transmitting device to generate the first magnetic field according to the test power, the method further includes:

[0023] The vehicle arrival signal is judged; wherein the vehicle arrival signal includes: a wireless charging arrival signal and a wired charging arrival signal;

[0024] If the vehicle arrival signal is the wireless charging arrival signal, a wireless charging preheating signal is generated and transmitted to the electric vehicle, so that the electric vehicle preheats the wireless charging receiving equipment according to the wireless charging preheating signal;

[0025] If the vehicle arrival signal is the wired charging arrival signal, a wired charging preheating signal is generated and transmitted to the electric vehicle, so that the electric vehicle preheats the wired charging receiving equipment according to the wired charging preheating signal.

[0026] As the improvement of the above-mentioned scheme, after the control wireless charging transmitting device charges the electric vehicle according to the charging power of the electric vehicle, the method further comprises: receiving a charging stop instruction, and controlling the wireless charging transmitting device to reduce the power to zero based on the charging stop instruction.

[0027] As the improvement of the above-mentioned scheme, the wireless charging transmitting device comprises a communication module, a conversion module and a transmitting coil; wherein the device for executing the charging control method for electric vehicles is connected with the communication module and the conversion module respectively, and the conversion module is connected with the transmitting coil.

[0028] The communication module is used to establish the connection between the device for executing the charging control method for electric vehicles and the electric vehicle and the cloud server respectively.

[0029] The conversion module is used to convert the current into high-frequency alternating current.

[0030] The transmitting coil is used to convert the electric energy into magnetic energy.

[0031] Correspondingly, an embodiment of the present application further provides a charging control device for electric vehicles, which comprises a data receiving module, a magnetic field generating module, a coil offset module and a data judging module.

[0032] The data receiving module is used to receive a vehicle arrival signal; wherein the vehicle arrival signal is generated after detecting that the electric vehicle arrives at the charging position.

[0033] The magnetic field generating module is used to control the wireless charging transmitting device to generate a first magnetic field according to the inspection power when the vehicle arrival signal is a wireless charging arrival signal; wherein the electric vehicle generates an induced current after receiving the first magnetic field, and the coil offset is generated based on the induced current.

[0034] The coil offset module is used to receive the coil offset generated by the electric vehicle.

[0035] The data judging module is used to judge whether the coil offset is greater than the offset threshold value: if yes, the wireless charging transmitting device is controlled to stop generating the first magnetic field according to the inspection current; if no, the wireless charging transmitting device is controlled to charge the electric vehicle according to the charging power of the electric vehicle.

[0036] Correspondingly, an embodiment of the present application also provides a charging control system for an electric vehicle, comprising a wireless charging transmitting device, a power grid, an electric vehicle and a charging control device for the electric vehicle; wherein the wireless charging transmitting device is connected with the power grid and the charging control device for the electric vehicle respectively, and the wireless charging transmitting device is connected with the electric vehicle; the charging control device for the electric vehicle applies the charging control method for the electric vehicle as described in the present application.

[0037] Correspondingly, an embodiment of the present application also provides a computer terminal device, comprising a processor, a memory and a computer program stored in the memory and configured to be executed by the processor, wherein the processor executes the computer program to implement the charging control method for the electric vehicle as described in the present application.

[0038] Correspondingly, an embodiment of the present application also provides a computer readable storage medium, comprising a stored computer program, wherein the computer readable storage medium controls a device where the computer readable storage medium is located to execute the charging control method for the electric vehicle as described in the present application when the computer program runs.

[0039] As can be seen from the above, the present application has the following beneficial effects:

[0040] The present application provides a charging control method for an electric vehicle, receiving a vehicle arrival signal; wherein the vehicle arrival signal is generated after detecting that the electric vehicle arrives at a charging position; when the vehicle arrival signal is a wireless charging arrival signal, controlling a wireless charging transmitting device to generate a first magnetic field according to a test power; wherein the electric vehicle generates an induced current after receiving the first magnetic field, and generates a coil offset based on the induced current; receiving the coil offset generated by the electric vehicle; judging whether the coil offset is greater than an offset threshold; if yes, controlling the wireless charging transmitting device to stop generating the first magnetic field according to the test current; if no, controlling the wireless charging transmitting device to charge the electric vehicle according to the charging power of the electric vehicle. The present application identifies the vehicle arrival signal after the electric vehicle arrives at the charging position, and confirms the wireless charging signal to charge the electric vehicle wirelessly. Compared with the prior art of charging the electric vehicle through a charging gun, the present application can charge the electric vehicle non-contact through wireless charging, without docking the charging gun, greatly improving the charging access efficiency of the electric vehicle. At the same time, the present application positions the wireless charging based on the coil offset, greatly improving the accuracy of the wireless charging. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 is a flowchart of the charging control method for the electric vehicle provided by an embodiment of the present application;

[0042] Figure 2 is a structural schematic diagram of a charging control device for an electric vehicle provided by an embodiment of the present application;

[0043] Figure 3 is a structural schematic diagram of a terminal device provided by an embodiment of the present application;

[0044] Figure 4 is a structural schematic diagram of a charging control system for an electric vehicle provided by an embodiment of the present application. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of the present application.

[0046] Embodiment One

[0047] Referring to Figure 1 , Figure 1 is a flow schematic diagram of a charging control method for an electric vehicle provided by an embodiment of the present application, as shown in the figure, the embodiment includes steps 101 to 104, and each step is specifically as follows: Figure 1

[0048] Step 101: receiving a vehicle arrival signal; wherein the vehicle arrival signal is generated after detecting that the electric vehicle arrives at a charging position.

[0049] In the embodiment, before the control wireless charging transmitting device generates the first magnetic field according to the inspection power, it further includes:

[0050] judging the vehicle arrival signal; wherein the vehicle arrival signal includes a wireless charging arrival signal and a wired charging arrival signal;

[0051] if the vehicle arrival signal is the wireless charging arrival signal, generating a wireless charging preheating signal and transmitting it to the electric vehicle, so that the electric vehicle preheats the wireless charging receiving device according to the wireless charging preheating signal;

[0052] if the vehicle arrival signal is the wired charging arrival signal, generating a wired charging preheating signal and transmitting it to the electric vehicle, so that the electric vehicle preheats the wired charging receiving device according to the wired charging preheating signal.

[0053] ​Step 102: when the vehicle arrival signal is the wireless charging arrival signal, the control wireless charging transmitting device generates a first magnetic field according to the test power; wherein, after the electric vehicle receives the first magnetic field, an induced current is generated, and a coil offset is generated based on the induced current.

[0054] In the embodiment, the control wireless charging transmitting device generates the first magnetic field according to the test current, comprising:

[0055] A self-checking operation is performed to generate a first self-checking result.

[0056] A second self-checking result transmitted by the electric vehicle is received.

[0057] The first self-checking result and the second self-checking result are judged.

[0058] If the first self-checking result is self-checking passed and the second self-checking result is self-checking passed, a start signal is generated, and the control wireless charging transmitting device generates the first magnetic field according to the test current based on the start signal.

[0059] Otherwise, a warning signal is generated.

[0060] In a specific embodiment, the electric vehicle parks into a parking space with a wireless charging transmitting device or a wired charging device, a vehicle arrival signal is generated after the vehicle is detected, the charging control device for the electric vehicle establishes communication with the electric vehicle by itself, the charging control device for the electric vehicle and the electric vehicle each enter a self-checking state, the charging control device for the electric vehicle and the electric vehicle all pass the self-checking and enter a standby state, and the charging control device for the electric vehicle sends a start signal after receiving a start instruction; if the self-checking does not pass, a warning signal is sent.

[0061] It should be noted that the start instruction of the wireless charging is sent by the vehicle or a mobile phone APP, and the mobile phone APP is preferred.

[0062] In a specific embodiment, after the charging control device for the electric vehicle receives the start signal, it first operates at a verification power, converts a small current into a magnetic field, and the corresponding receiving coil of the electric vehicle converts the received magnetic energy into an induced current to charge the battery. The battery management system of the electric vehicle collects the generated induced current data and feeds back to the whole vehicle control system of the electric vehicle and the charging control device for the electric vehicle. The charging control device for the electric vehicle judges the coil offset according to the size of the induced current and feeds back a signal to the whole vehicle control system. The whole vehicle control system judges whether the handshake is completed according to the information fed back by the charging control device for the electric vehicle.

[0063] Preferably, the verification power can be 1-3% of the rated power of the transmitting coil, and preferably 2% of the rated power.

[0064] In a specific embodiment, after the handshake is completed, the power battery pack of the electric vehicle sends a charging demand parameter and monitors a charging state, the charging control device of the electric vehicle changes the power to a charging power according to the charging demand parameter, and controls the output charging current, and the receiving coil of the electric vehicle generates an induced current based on the charging current to charge the battery.

[0065] In the embodiment, the coil offset is generated based on the induced current, including:

[0066] The input voltage and input current of the transmitting coil are collected;

[0067] The induced voltage is determined based on the induced current;

[0068] The input voltage, input current, induced voltage and induced current are substituted into a preset calculation formula to calculate a power ratio; wherein the calculation formula is specifically:

[0069]

[0070] In the formula, is the power ratio, is the input voltage, is the input current, is the induced voltage, is the induced current;

[0071] According to the power ratio and a preset ratio interval, a ratio interval corresponding to the power ratio is selected as a target ratio interval, and an offset corresponding to the target ratio interval is taken as the coil offset.

[0072] In a specific embodiment, When <80% (preset ratio interval), the sending offset is >10cm (coil offset corresponding to the current ratio interval);

[0073] When 80%~89% (preset ratio interval), the sending offset is 10cm~1cm (coil offset corresponding to the current ratio interval);

[0074] When ≥90% (preset ratio interval), the sending offset is 0cm (coil offset corresponding to the current ratio interval).

[0075] In the embodiment, the wireless charging transmitting device includes a communication module, a conversion module and a transmitting coil; wherein the device for executing the charging control method for the electric vehicle is connected with the communication module and the conversion module respectively, and the conversion module is connected with the transmitting coil.

[0076] The communication module is configured to establish a connection between the device for implementing the charging control method for the electric vehicle and the electric vehicle and the cloud server respectively.

[0077] The conversion module is configured to convert the current into high-frequency alternating current.

[0078] The transmitting coil is configured to convert the electric energy into magnetic energy.

[0079] In a specific embodiment, the transmitting coil can be one or more.

[0080] In a specific embodiment, the communication mode used by the communication module includes but is not limited to WIFI communication, Bluetooth communication and infrared communication, and WIFI communication is preferred.

[0081] In a specific embodiment, the cooling mode of the transmitting coil includes but is not limited to a natural air cooling system and an active air cooling system, and the active air cooling system is preferred; the cooling mode of the receiving coil includes but is not limited to a natural air cooling system, an active air cooling system and a water cooling system, and when the water cooling system is used, it can be connected in parallel to the vehicle cooling system, and the water cooling system is preferred.

[0082] Step 103: receiving a coil offset generated by the electric vehicle.

[0083] Step 104: determining whether the coil offset is greater than an offset threshold: if yes, controlling the wireless charging transmitting device to stop generating the first magnetic field according to the test current; if no, controlling the wireless charging transmitting device to charge the electric vehicle according to the charging power of the electric vehicle.

[0084] In a specific embodiment, the offset threshold can be 10 cm, and if the offset exceeds the offset threshold, the charging control device for the electric vehicle sends a handshake failure signal to the electric vehicle and controls the wireless charging transmitting device to stop generating the first magnetic field according to the test current.

[0085] In this embodiment, after the wireless charging transmitting device charges the electric vehicle according to the charging power of the electric vehicle, it further includes receiving a charging stop instruction and controlling the wireless charging transmitting device to reduce the power to zero based on the charging stop instruction.

[0086] In this embodiment, the charging control device for the electric vehicle reduces the power to zero, and the charging control device for the electric vehicle controls the battery power pack of the electric vehicle to be disconnected from the loop of the receiving coil.

[0087] In a specific embodiment, the battery management system of the electric vehicle or the charging control device for the electric vehicle stops the wireless charging when any of the following conditions occurs: the battery is fully charged, the manual active stop, abnormal failure, etc. The abnormal failure includes but is not limited to any of the following conditions: hardware failure, foreign matter entering, battery temperature being too high, etc.

[0088] Referring to Figure 2 , Figure 2 is a structural schematic diagram of a charging control device for an electric vehicle provided by an embodiment of the present application, comprising: a data receiving module 201, a magnetic field generating module 202, a coil offset module 203 and a data judging module 204.

[0089] The data receiving module is configured to receive a vehicle arrival signal, wherein the vehicle arrival signal is generated after detecting that the electric vehicle arrives at the charging position.

[0090] The magnetic field generating module is configured to control the wireless charging transmitting device to generate a first magnetic field according to the test power when the vehicle arrival signal is a wireless charging arrival signal, wherein the electric vehicle generates an induced current after receiving the first magnetic field, and the coil offset is generated based on the induced current.

[0091] The coil offset module is configured to receive the coil offset generated by the electric vehicle.

[0092] The data judging module is configured to judge whether the coil offset is greater than an offset threshold: if yes, control the wireless charging transmitting device to stop generating the first magnetic field according to the test current; if no, control the wireless charging transmitting device to charge the electric vehicle according to the charging power of the electric vehicle.

[0093] It can be understood that the above system item embodiments correspond to the method item embodiments of the present application, and can realize the charging control method for the electric vehicle provided by any of the above method item embodiments of the present application.

[0094] Referring to Figure 4 , Figure 4 is a structural schematic diagram of a charging control system for an electric vehicle provided by an embodiment of the present application, comprising: a wireless charging transmitting device 401, a power grid 402, an electric vehicle 403 and a charging control device for the electric vehicle 404; wherein the wireless charging transmitting device is connected with the power grid and the charging control device for the electric vehicle respectively, and the wireless charging transmitting device is connected with the electric vehicle; the charging control device for the electric vehicle applies the charging control method for the electric vehicle as described in the present application.

[0095] In the embodiment, the wireless charging transmitting device comprises a communication module 4011, a conversion module 4012 and a transmitting coil 4013; wherein the device for performing the charging control method for the electric vehicle is connected with the communication module and the conversion module respectively, and the conversion module is connected with the transmitting coil;

[0096] The communication module is used to establish the connection between the device for performing the charging control method for the electric vehicle and the electric vehicle and the cloud server respectively;

[0097] The conversion module is used to convert the current into high-frequency alternating current;

[0098] The transmitting coil is used to convert the electric energy into magnetic energy.

[0099] In the embodiment, the electric vehicle comprises a receiving coil, an electric vehicle cooling system and a power battery pack; wherein the receiving coil is connected with the electric vehicle cooling system and the power battery pack respectively.

[0100] Beneficial effects

[0101] In the embodiment, the vehicle arrival signal is received; wherein the vehicle arrival signal is generated after the electric vehicle arrives at the charging position; when the vehicle arrival signal is the wireless charging arrival signal, the wireless charging transmitting device is controlled to generate the first magnetic field according to the test power; wherein the electric vehicle generates the induced current after receiving the first magnetic field, and generates the coil offset based on the induced current; the coil offset generated by the electric vehicle is received; it is judged whether the coil offset is greater than the offset threshold; if yes, the wireless charging transmitting device is controlled to stop generating the first magnetic field according to the test current; if not, the wireless charging transmitting device is controlled to charge the electric vehicle according to the charging power of the electric vehicle. The present application identifies the vehicle arrival signal after the electric vehicle arrives at the charging position, and confirms the wireless charging signal to charge the electric vehicle wirelessly. Compared with the prior art of charging the electric vehicle through the charging gun, the present application can charge the electric vehicle non-contact through wireless charging, without the docking of the charging gun, greatly improving the charging access efficiency of the electric vehicle. At the same time, the present application positions the wireless charging based on the coil offset, greatly improving the accuracy of the wireless charging.

[0102] Embodiment two

[0103] Reference Figure 3 , Figure 3 is a terminal device structure schematic diagram provided by an embodiment of the present application.

[0104] The terminal device of this embodiment includes a processor 301, a memory 302, and a computer program stored in the memory 302 and executable on the processor 301. The processor 301 implements all the steps of the charging control method for an electric vehicle in the embodiments when executing the computer program, for example Figure 1 all the steps of the charging control method for an electric vehicle as shown in the embodiments. Alternatively, the processor implements the functions of the modules in the device embodiments when executing the computer program, for example Figure 2 all the modules of the charging control device for an electric vehicle as shown in the embodiments.

[0105] In addition, the embodiment of the present application further provides a computer readable storage medium, which includes a stored computer program, wherein when the computer program is executed, the device where the computer readable storage medium is located performs the charging control method for an electric vehicle according to any one of the above embodiments.

[0106] Those skilled in the art can understand that the schematic diagram is only an example of the terminal device and does not limit the terminal device, which can include more or fewer components than the diagram, or combine certain components, or different components, for example, the terminal device can also include an input / output device, a network access device, a bus, etc.

[0107] The processor 301 can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor or the like. The processor 301 is the control center of the terminal device, which connects all parts of the terminal device through various interfaces and lines.

[0108] The memory 302 can be used to store the computer programs and / or modules, and the processor 301 realizes various functions of the terminal device by running or executing the computer programs and / or modules stored in the memory, and calling the data stored in the memory 302. The memory 302 can mainly include a program storage area and a data storage area, wherein the program storage area can store operating systems, at least one application program required by a function (such as a sound playing function, an image playing function, etc.), and the like; and the data storage area can store data created according to the use of the mobile phone (such as audio data, a phone book, etc.), and the like. In addition, the memory can include a high-speed random access memory, and can also include a nonvolatile memory, for example, a hard disk, a memory, a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, at least one disk storage device, a flash memory device, or other volatile solid-state memory devices.

[0109] The modules / units integrated in the terminal device, if realized in the form of software function units and sold or used as independent products, can be stored in a computer readable storage medium. Based on this understanding, all or part of the processes in the above-mentioned embodiment methods can also be completed by a computer program instructing related hardware, and the computer program can be stored in a computer readable storage medium. When the processor executes the computer program, the steps of the above-mentioned various method embodiments can be realized. The computer program includes computer program code, which can be in the form of source code, object code, executable files or some intermediate forms, etc. The computer readable medium can include any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal and software distribution medium, etc.

[0110] It should be noted that the apparatus embodiments described above are merely illustrative, and the units described as separate units can or can not be physically separate, and the units shown as units can or can not be physical units, i.e., can be located in one place, or can be distributed to multiple network units. Part or all of the modules can be selected to achieve the purpose of the embodiment according to actual needs. In addition, the connection relationship between the modules in the apparatus embodiment provided by the present application indicates that there is a communication connection between them, which can be implemented as one or more communication buses or signal lines. Those skilled in the art can understand and implement it without creative labor.

[0111] The above is the preferred embodiment of the present application. It should be noted that those skilled in the art can make several improvements and refinements without departing from the principles of the present application, and these improvements and refinements are also considered within the scope of protection of the present application.

Claims

1. A charge control method for an electric vehicle, characterized by, The method comprises the following steps: receiving a vehicle arrival signal; wherein the vehicle arrival signal is generated after detecting that an electric vehicle arrives at a charging position; when the vehicle arrival signal is a wireless charging arrival signal, controlling the wireless charging transmitting device to generate a first magnetic field according to a test power; wherein the electric vehicle generates an induced current after receiving the first magnetic field, and a coil offset is generated based on the induced current; the generating of the coil offset based on the induced current comprises: collecting an input voltage and an input current of a transmitting coil; confirming an induced voltage based on the induced current; substituting the input voltage, the input current, the induced voltage and the induced current into a preset calculation formula to calculate a power ratio; wherein the calculation formula is specifically: In the formula, is a power ratio, is an input voltage, is an input current, is an induced voltage, is an induced current; according to the power ratio and a preset ratio interval, a ratio interval corresponding to the power ratio is selected as a target ratio interval, and an offset corresponding to the target ratio interval is taken as a coil offset; receiving the coil offset generated by the electric vehicle; judging whether the coil offset is greater than an offset threshold value: if yes, controlling the wireless charging transmitting device to stop generating the first magnetic field according to the test current; if no, controlling the wireless charging transmitting device to charge the electric vehicle according to a charging power of the electric vehicle.

2. The charge control method for an electric automobile according to claim 1, characterized by, The controlling of the wireless charging transmitting device to generate the first magnetic field according to the test current comprises: performing a self-checking operation to generate a first self-checking result; receiving a second self-checking result transmitted by the electric vehicle; judging the first self-checking result and the second self-checking result; if the first self-checking result is a self-checking pass and the second self-checking result is a self-checking pass, generating a start signal, and controlling the wireless charging transmitting device to generate the first magnetic field according to the test current based on the start signal; otherwise, generating a warning signal.

3. The charge control method for an electric automobile according to claim 1, characterized by, Before the controlling of the wireless charging transmitting device to generate the first magnetic field according to the test power, the method further comprises: judging the vehicle arrival signal; wherein the vehicle arrival signal comprises a wireless charging arrival signal and a wired charging arrival signal; if the vehicle arrival signal is the wireless charging arrival signal, generating a wireless charging preheating signal and transmitting the wireless charging preheating signal to the electric vehicle, so that the electric vehicle preheats a wireless charging receiving device according to the wireless charging preheating signal; if the vehicle arrival signal is the wired charging arrival signal, generating a wired charging preheating signal and transmitting the wired charging preheating signal to the electric vehicle, so that the electric vehicle preheats a wired charging receiving device according to the wired charging preheating signal.

4. The charge control method for an electric automobile according to claim 1, characterized by, After the controlling of the wireless charging transmitting device to charge the electric vehicle according to the charging power of the electric vehicle, the method further comprises: receiving a charging stop instruction, and controlling the wireless charging transmitting device to reduce the power to zero based on the charging stop instruction.

5. The charge control method for an electric automobile according to claim 1, characterized by, The wireless charging transmitting device comprises a communication module, a conversion module and a transmitting coil; wherein the device for performing the charging control method for the electric vehicle is connected with the communication module and the conversion module respectively, and the conversion module is connected with the transmitting coil; The communication module is used to establish the connection between the device for performing the charging control method for the electric vehicle and the electric vehicle and a cloud server respectively; The conversion module is used to convert the current into high-frequency alternating current; The transmitting coil is used to convert the electric energy into magnetic energy.

6. A charging control device for an electric vehicle, characterized by comprising: The method comprises the following steps: The data receiving module, the magnetic field generating module, the coil offset module and the data judging module; The data receiving module is configured to receive a vehicle arrival signal, wherein the vehicle arrival signal is generated after detecting that the electric vehicle arrives at the charging position; The magnetic field generating module is configured to control the wireless charging transmitting device to generate a first magnetic field according to the test power when the vehicle arrival signal is a wireless charging arrival signal, wherein the electric vehicle generates an induced current after receiving the first magnetic field, and the coil offset is generated based on the induced current; the coil offset generated based on the induced current includes: collecting an input voltage and an input current of a transmitting coil; confirming an induced voltage based on the induced current; and substituting the input voltage, the input current, the induced voltage and the induced current into a preset calculation formula to calculate a power ratio; wherein the calculation formula is specifically as follows: In the formula, is a power ratio, is an input voltage, is an input current, is an induced voltage, is an induced current; according to the power ratio and a preset ratio interval, a ratio interval corresponding to the power ratio is selected as a target ratio interval, and an offset corresponding to the target ratio interval is taken as a coil offset; The coil offset module is configured to receive the coil offset generated by the electric vehicle. The data judging module is configured to judge whether the coil offset is greater than an offset threshold value; if yes, the wireless charging transmitting device is controlled to stop generating the first magnetic field according to the test current; and if no, the wireless charging transmitting device is controlled to charge the electric vehicle according to the charging power of the electric vehicle.

7. A charging control system for an electric vehicle, characterized by, The application comprises: The wireless charging transmitting device, the power grid, the electric vehicle and the charging control device for the electric vehicle; wherein the wireless charging transmitting device is connected with the power grid and the charging control device for the electric vehicle respectively, and the wireless charging transmitting device is connected with the electric vehicle; the charging control device for the electric vehicle applies the method for charging control of the electric vehicle according to any one of claims 1 to 5.

8. A computer terminal device, characterized by The computer readable storage medium comprises a stored computer program, wherein when the computer program runs, the device where the computer readable storage medium is located executes the method for charging control of the electric vehicle according to any one of claims 1 to 5.

9. A computer-readable storage medium, characterized in that, The computer readable storage medium comprises a stored computer program, wherein when the computer program runs, the device where the computer readable storage medium is located executes the method for charging control of the electric vehicle according to any one of claims 1 to 5.

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