CN117621876A

CN117621876A - Method, system, vehicle and storage medium for eliminating electromagnetic interference

Info

Publication number: CN117621876A
Application number: CN202311689922.3A
Authority: CN
Inventors: 王卫红; 田永坡; 余天刚
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2023-12-08
Filing date: 2023-12-08
Publication date: 2024-03-01

Abstract

Methods, systems, vehicles, and storage media are provided for electromagnetic interference rejection. According to the scheme, when the first guide signal is detected to be subjected to external electromagnetic interference, the first link which originally transmits the first guide signal is disconnected, and the first guide signal can not be transmitted to the vehicle-mounted charger. And generating a second guide signal by a signal generating module in the vehicle, and transmitting the second guide signal to the vehicle-mounted charger through a second link. The signal generating module is not interfered by external electromagnetic interference, so that the second guide signal is not easy to be interfered by external electromagnetic interference. The scheme indicates the vehicle-mounted charger to continuously convert the alternating-current charging signal into the direct-current charging signal through the second indicator signal so as to charge the vehicle-mounted battery. Therefore, when the first guide signal is subjected to external electromagnetic interference, the scheme can regenerate the second guide signal to realize the function of the first guide signal, and avoid interruption of the alternating current charging process so as to continuously carry out the alternating current charging process of the vehicle.

Description

Method, system, vehicle and storage medium for eliminating electromagnetic interference

Technical Field

The present application relates to the field of vehicle charging, and more particularly, to a method, system, vehicle, and storage medium for electromagnetic interference rejection in the field of vehicle charging.

Background

With the gradual popularization of vehicle motorization, the charging scene of electric vehicles is also becoming increasingly popular. In one embodiment, the electric vehicle is configured to send a Control Pilot (CP) signal to an On Board Charger (OBC) in the electric vehicle via an Alternating Current (AC) charging stake to instruct the On Board Charger to convert the acquired AC charging signal into a dc charging signal to charge the electric vehicle. The CP signal is a pulse width modulation (Pulse Width Modulation, PWM) signal for handshaking communication between the electric vehicle and the AC charging pile.

However, in a charging scenario of an electric vehicle, a CP signal is transmitted to the electric vehicle from outside the electric vehicle, the CP signal is affected by external electromagnetic interference, at this time, the CP signal is deformed, and the deformed CP signal does not have a function of indicating the vehicle-mounted charger to convert an acquired ac charging signal into a dc charging signal, so as to charge the electric vehicle, thereby interrupting an original charging process. Therefore, a method for continuously maintaining the charging process after the CP signal is subject to the external electromagnetic interference in the charging scene of the electric vehicle is needed.

Disclosure of Invention

The application provides a method, a system, a vehicle and a storage medium for eliminating electromagnetic interference, wherein when a first guide signal is subjected to external electromagnetic interference, a second guide signal can be regenerated to realize the function of the first guide signal, the interruption of the alternating current charging process of the vehicle is not influenced, and a vehicle-mounted battery can be continuously charged.

In a first aspect, a method for removing electromagnetic interference is provided, the method comprising: when the vehicle is in an alternating-current charging scene, a first guide signal is received through a first link between the vehicle-mounted charger and the alternating-current charging pile, and the guide signal is used for indicating the vehicle-mounted charger to convert the acquired alternating-current charging signal into a direct-current charging signal so as to charge the vehicle-mounted battery; under the condition that the first guide signal is subjected to external electromagnetic interference, the first link is disconnected, and a second guide signal is generated through a signal generating module in the vehicle, wherein the signal generating module is not subjected to external electromagnetic interference; the second instruction signal is transmitted to the on-board charger through a second link between the signal generating module and the on-board charger.

In the above technical scheme, when the vehicle is in an ac charging scene, a first guiding signal is received through a first link between the vehicle-mounted charger and the ac charging pile under normal conditions, so that the first guiding signal indicates the vehicle-mounted charger to convert an ac charging signal sent by the ac charging pile into a dc charging signal, and a charging process of the vehicle-mounted battery is realized. The first guiding signal is transmitted from outside the vehicle to inside the vehicle, and thus the first guiding signal is subject to external electromagnetic interference. Under the condition that the first guide signal is subjected to external electromagnetic interference, the signal waveform of the first guide signal can be deformed, and at the moment, the first guide signal cannot instruct the vehicle-mounted charger to convert an alternating-current charging signal sent by the alternating-current charging pile into a direct-current charging signal, so that the vehicle-mounted battery cannot be charged. That is, the vehicle's alternating current charging process may be continued at this time, which may seriously affect the vehicle user's charging experience for the vehicle. According to the scheme, when the first guide signal is detected to be subjected to external electromagnetic interference, the first link is disconnected, and the first guide signal subjected to external electromagnetic interference can not be transmitted to the vehicle-mounted charger. And generating a second guiding signal through a signal generating module in the vehicle, and transmitting the second guiding signal to the vehicle-mounted charger through a second link. Because the signal generating module is not interfered by external electromagnetic interference, the second guiding signal is not easy to be interfered by external electromagnetic interference. And transmitting the second guide signal to the vehicle-mounted charger, so that the second guide signal is subjected to external electromagnetic interference at the first guide signal to replace the first guide signal for indicating the vehicle-mounted charger to continuously convert the alternating current charging signal into the direct current charging signal, and the charging process of the vehicle-mounted battery is realized. Therefore, when the first guide signal is subjected to external electromagnetic interference, the second guide signal can be regenerated to realize the function of the first guide signal, the interruption of the alternating current charging process of the vehicle is not influenced, and the vehicle-mounted battery can be continuously charged.

With reference to the first aspect, in some possible implementations, in a case that the first guiding signal is subject to external electromagnetic interference, the first link is disconnected; and generating a second instruction signal by a signal generation module in the vehicle, the method further comprises: and transmitting the first guiding signal to a signal receiving module in the vehicle through a third link, wherein the third link is a link between the alternating current charging pile and the signal receiving module, and the signal receiving module is used for receiving the first guiding signal subjected to external electromagnetic interference.

In the above technical solution, when the first guiding signal is subject to external electromagnetic interference, the first link is disconnected, and after the second guiding signal is generated by the signal generating module in the vehicle, the solution further transmits the first guiding signal to the signal receiving module through a third link between the signal receiving module in the vehicle and the ac charging pile. According to the scheme, the phenomenon that the alternating-current charging pile only outputs the first guiding signal and the equipment does not receive the first guiding signal can be avoided, and the impact of lightning stroke on the alternating-current charging pile in lightning weather is avoided. The scheme can improve the service life of the alternating current charging pile.

With reference to the first aspect and the foregoing implementation manner, in some possible implementation manners, a method for determining that the first guiding signal is subject to external electromagnetic interference includes any one of the following: under the condition that the number of the amplitude values corresponding to the first guide signals is larger than the preset number, determining that the first guide signals are subjected to external electromagnetic interference; and determining that the first guide signal is subjected to external electromagnetic interference under the condition that the signal parameter of the first guide signal indicates that the signal waveform of the first guide signal is not rectangular.

In the above technical solution, the signal waveform of the standard first guiding signal is a square wave, and the number of amplitudes corresponding to the square wave is 2. Therefore, the scheme can determine that the first guiding signal is subjected to external electromagnetic interference under the condition that the number of the corresponding amplitude values of the first guiding signal is larger than the preset number (2) or the signal parameter of the first guiding signal indicates that the signal waveform of the first guiding signal is not a rectangular wave.

With reference to the first aspect and the foregoing implementation manner, in some possible implementation manners, the method further includes: and under the condition that the first guiding signal is subjected to external electromagnetic interference and the first signal tolerance corresponding to the first guiding signal is larger than a preset signal tolerance, executing the steps of disconnecting the first link and generating a second guiding signal through a signal generating module in the vehicle, wherein the preset signal tolerance is used for indicating the allowed deviation between the received guiding signal and the preset guiding signal.

In the above technical solution, the method is equivalent to receiving the first guiding signal through the first link between the vehicle-mounted charger and the ac charging pile in the vehicle when the vehicle is in the ac charging scene; and under the condition that the first guide signal is subjected to external electromagnetic interference and the first signal tolerance corresponding to the first guide signal is larger than the preset signal tolerance, disconnecting the first link, generating a second guide signal through a signal generating module in the vehicle, and transmitting the second guide signal to the vehicle-mounted charger through the second link. In some embodiments, when the first guiding signal is subject to less external electromagnetic interference, the vehicle-mounted charger considers that the first guiding signal is not subject to external electromagnetic interference, or converts the received ac charging signal into a dc charging signal to charge the vehicle-mounted battery. Therefore, the second guiding signal can be generated by the signal generating module only when the first guiding signal is subject to external electromagnetic interference and the first signal tolerance corresponding to the first guiding signal is larger than the preset signal tolerance, namely when the first guiding signal is subject to larger external electromagnetic interference. This process can avoid a lot of energy consumption of the vehicle.

In a second aspect, a system for eliminating electromagnetic interference is provided, the system comprising a control module, a signal generation module, a first switch module, a second switch module and an on-board charger;

when the vehicle is in an alternating-current charging scene, the control module controls the vehicle-mounted charger, connection is established between the vehicle-mounted charger and the alternating-current charging pile through the first switch module, the vehicle-mounted charger is used for receiving a first guide signal through the connection relation between the alternating-current charging pile and the vehicle-mounted charger, and the guide signal is used for indicating the vehicle-mounted charger to convert the acquired alternating-current charging signal into a direct-current charging signal so as to charge the vehicle-mounted battery;

under the condition that the first guiding signal meets the preset condition, the control module controls the vehicle-mounted charger to be disconnected with the alternating-current charging pile through the first switch module, and controls the signal generation module to be connected with the vehicle-mounted charger through the second switch module, the signal generation module is used for generating a second guiding signal and transmitting the second guiding signal to the vehicle-mounted charger, the signal generation module is free from external electromagnetic interference, and the preset condition is that the first guiding signal is subjected to external electromagnetic interference.

In the above technical solution, in general, when a vehicle is in an ac charging scene, an on-board charger in the vehicle is connected with an ac charging pile through the first switch module, where the on-board charger receives a first guiding signal through a connection relationship between the ac charging pile and the on-board charger. Then, the vehicle-mounted charger converts the acquired alternating-current charging signal into a direct-current charging signal based on the indication of the first guiding signal so as to charge the vehicle-mounted battery. However, when the first guiding signal is interfered by external electromagnetic waves, the signal waveform of the first guiding signal is deformed, and at this time, the first guiding signal cannot instruct the vehicle-mounted charger to convert the ac charging signal sent by the ac charging pile into a dc charging signal, so that charging of the vehicle-mounted battery cannot be realized. That is, the vehicle's alternating current charging process may be continued at this time, which may seriously affect the vehicle user's charging experience for the vehicle. When the system detects that the first guiding signal is subjected to external electromagnetic interference, the vehicle-mounted charger is disconnected with the alternating-current charging pile through the first switch module, so that the first guiding signal subjected to external electromagnetic interference cannot be transmitted to the vehicle-mounted charger. The signal generation module is connected with the vehicle-mounted charger through the second switch module and is used for generating a second instruction signal and transmitting the second instruction signal to the vehicle-mounted charger. Because the signal generating module is not interfered by external electromagnetic interference, the second guiding signal is not easy to be interfered by external electromagnetic interference. And transmitting the second guide signal to the vehicle-mounted charger, so that the second guide signal is subjected to external electromagnetic interference at the first guide signal to replace the function indicated by the first guide signal, and the vehicle-mounted charger is instructed to continuously convert the alternating current charging signal into the direct current charging signal, and the charging process of the vehicle-mounted battery is realized. Therefore, when the first guide signal is subjected to external electromagnetic interference, the system can regenerate the second guide signal to realize the function of the first guide signal, the interruption of the alternating current charging process of the vehicle is not influenced, and the vehicle-mounted battery can be continuously charged.

With reference to the second aspect, in some possible implementations, the system further includes a third switch module and a signal receiving module;

under the condition that the first guiding signal meets the preset condition, the control module controls the signal receiving module to establish connection with the alternating current charging pile through the third switch module, and the signal receiving module is used for receiving the first guiding signal subjected to external electromagnetic interference through the connection relation between the third switch module and the alternating current charging pile.

In the above technical scheme, the system further comprises a third switch module and a signal receiving module. And under the condition that the first guide signal is subjected to external electromagnetic interference, the first link is disconnected, and after the second guide signal is generated by the signal generation module in the vehicle, the system also transmits the first guide signal subjected to external electromagnetic interference to the signal receiving module through the third switch module. This can avoid the AC charging stake only to export first guide signal, and the phenomenon that no equipment received first guide signal, avoids the thunderbolt to cause the impact to the AC charging stake when thunderbolt weather. The scheme can improve the service life of the alternating current charging pile.

With reference to the second aspect and the foregoing implementation manner, in some possible implementation manners, the system further includes a detection module;

the control module controls the detection module to be connected with the alternating current charging pile, and determines that the first guide signal is subjected to external electromagnetic interference under the condition that the number of the amplitude values corresponding to the first guide signal is larger than a preset number through the detection module; or determining, by the detection module, that the first guiding signal is subject to external electromagnetic interference under the condition that the signal parameter of the first guiding signal indicates that the signal waveform of the first guiding signal is not a rectangular wave.

In the above technical solution, the signal waveform of the standard first guiding signal is a square wave, and the number of amplitudes corresponding to the square wave is 2. Therefore, the system can determine that the first guiding signal is subject to external electromagnetic interference when the number of the corresponding amplitude values of the first guiding signal is larger than the preset number (2) or when the signal parameter of the first guiding signal indicates that the signal waveform of the first guiding signal is not a rectangular wave.

With reference to the second aspect and the foregoing implementation manner, in some possible implementation manners, the preset condition may further be that the first guiding signal is subject to external electromagnetic interference, and a first signal tolerance corresponding to the first guiding signal is greater than a preset signal tolerance, where the preset signal tolerance is used to indicate an allowable deviation between the received guiding signal and the preset guiding signal.

In the above technical solution, the method is equivalent to receiving the first guiding signal through the first link between the vehicle-mounted charger and the ac charging pile in the vehicle when the vehicle is in the ac charging scene; and under the condition that the first guide signal is subjected to external electromagnetic interference and the first signal tolerance corresponding to the first guide signal is larger than the preset signal tolerance, disconnecting the first link, generating a second guide signal through a signal generating module in the vehicle, and transmitting the second guide signal to the vehicle-mounted charger through the second link. In some embodiments, when the first guiding signal is subject to less external electromagnetic interference, the vehicle-mounted charger considers that the first guiding signal is not subject to external electromagnetic interference, or converts the received ac charging signal into a dc charging signal to charge the vehicle-mounted battery. Therefore, the system can generate the second guiding signal through the signal generating module under the condition that the first guiding signal is subject to external electromagnetic interference and the first signal tolerance corresponding to the first guiding signal is larger than the preset signal tolerance, namely when the first guiding signal is subject to larger external electromagnetic interference. This process can avoid a lot of energy consumption of the vehicle.

In a third aspect, there is provided a vehicle comprising a memory, a processor and a computer program stored in the memory and running on the processor, wherein the processor, when executing the computer program, causes the vehicle to perform the method of the first aspect or any one of the possible implementations of the first aspect.

In a fourth aspect, a computer readable storage medium is provided, in which instructions are stored which, when run on a computer or processor, cause the computer or processor to perform the method of the first aspect or any one of the possible implementations of the first aspect.

Drawings

Fig. 1 is a schematic diagram of a vehicle in an ac charging scenario according to an embodiment of the present application;

FIG. 2 is a schematic flow chart of a method for eliminating electromagnetic interference provided in an embodiment of the present application;

fig. 3 is a schematic structural view of an ac charging process of a vehicle according to an embodiment of the present application;

fig. 4 is a schematic structural view of an ac charging process of another vehicle according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of an apparatus for eliminating electromagnetic interference according to an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a system for eliminating electromagnetic interference according to an embodiment of the present disclosure;

FIG. 7 is a schematic diagram of another system for eliminating electromagnetic interference according to an embodiment of the present application;

FIG. 8 is a schematic diagram of another system for eliminating electromagnetic interference according to an embodiment of the present application;

fig. 9 is a schematic structural view of a vehicle according to an embodiment of the present application.

Detailed Description

The technical solutions in the present application will be clearly and thoroughly described below with reference to the accompanying drawings. Wherein, in the description of the embodiments of the present application, "a plurality" means two or more than two. The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as implying or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.

Fig. 1 is a schematic diagram of a vehicle in an ac charging scenario according to an embodiment of the present application.

It will be appreciated that the vehicle may be placed in an ac charging scenario after the charging gun of the ac charging stake is inserted into the charging port of the vehicle. Under the alternating current charging scene, the alternating current charging pile can transmit alternating current charging signals and guiding signals to an on-vehicle charger in the vehicle through the charging gun, and the guiding signals indicate the on-vehicle charger to convert the alternating current charging signals into direct current charging signals and then transmit the direct current charging signals to an on-vehicle battery in the vehicle so as to charge the on-vehicle battery.

Illustratively, as shown in fig. 1, the ac charging stake transmits a guidance signal to an on-board charger in the vehicle over a first link and an ac charging signal to the on-board charger over a target link, at which point the vehicle is in an ac charging scenario. The vehicle-mounted charger converts the alternating-current charging signal into a direct-current charging signal based on the indication function of the guide signal when the vehicle-mounted charger receives the alternating-current charging signal and the guide signal and determines that the signal quality of the guide signal is in a normal range. The vehicle charger transmits the direct current charging signal to a vehicle-mounted battery in the vehicle to charge the vehicle-mounted battery. In the case where it is determined that the signal quality of the guidance signal is in an abnormal range, the in-vehicle charger determines that the guidance signal is subject to interference, possibly by external electromagnetic interference. At this time, the vehicle-mounted charger does not convert the ac charging signal, and the ac charging process of the vehicle is interrupted.

In order to solve the problem that the vehicle is interrupted in the ac charging process due to the external electromagnetic interference of the guiding signal when the vehicle is in the ac charging scene, the present application proposes a method for eliminating electromagnetic interference to continue to maintain the process of charging the vehicle-mounted battery, and in particular, the following method 200 can be seen.

Fig. 2 is a schematic flow chart of a method for eliminating electromagnetic interference according to an embodiment of the present application.

It should be understood that the method for eliminating electromagnetic interference provided in the embodiment of the present application may be applied to the vehicle shown in fig. 1. Specifically, the method for eliminating electromagnetic interference can be applied to a vehicle controller in the vehicle.

Illustratively, as shown in FIG. 2, the method 200 includes:

in step 201, when the vehicle is in an ac charging scenario, the vehicle controller receives a first guiding signal through a first link between the vehicle-mounted charger and the ac charging pile, where the guiding signal is used to instruct the vehicle-mounted charger to convert the acquired ac charging signal into a dc charging signal, so as to charge the vehicle-mounted battery.

It should be understood that the vehicle that is ac charged using the ac charging stake is an electric vehicle or a hybrid vehicle, and the "vehicle" in step 201 is an electric vehicle or a hybrid electric vehicle. The electric vehicle is a vehicle type in which a vehicle-mounted power supply provides a power source completely, and a traction motor drives wheels to run. The hybrid electric vehicle is a mixture of fuel (gasoline or diesel) and electric energy, and is a vehicle type in which an electric motor is used as auxiliary power for an engine to drive wheels.

It should also be appreciated that at present, the ac charging peg is connected to an on-board charger when the vehicle is in an ac charging scenario. Specifically, the vehicle-mounted charger receives a first guiding signal sent by the alternating-current charging pile through a first link between the vehicle-mounted charger and the alternating-current charging pile, the vehicle-mounted charger obtains an alternating-current charging signal sent by the alternating-current charging pile through a target link between the vehicle-mounted charger and the alternating-current charging pile, and the first guiding signal is used for indicating the vehicle-mounted charger to convert the alternating-current charging signal into a direct-current charging signal so as to charge a vehicle-mounted battery in a vehicle. The "first link" refers to a communication link between the vehicle-mounted charger and the ac charging pile, and the first link is used for transmitting a first guiding signal to the vehicle-mounted charger, so that the vehicle-mounted charger converts an acquired ac charging signal into a dc charging signal based on the indication effect of the first guiding signal, so as to charge the vehicle-mounted battery.

It should also be appreciated that the "first guidance signal" in step 201 may be regarded as a Control Pilot (CP) signal for use in an ac charging process of the vehicle for instructing the on-board charger to convert the acquired ac charging signal into a dc charging signal for charging the on-board battery. Specifically, the first guiding signal is a pulse width modulation (Pulse Width Modulation, PWM) signal, which is a rectangular wave signal.

It should also be appreciated that the first guidance signal is transmitted from outside the vehicle to the on-board charger via the first link in the case where the vehicle is in an alternating-current charging scenario. Therefore, the first guiding signal is subject to external electromagnetic interference. Under the condition that the first guiding signal is subjected to external electromagnetic interference, the signal waveform of the first guiding signal is deformed. After receiving the first guiding signal that is subject to external electromagnetic interference, the vehicle-mounted charger considers that the guiding signal is not received, because the first guiding signal is deformed at this time, the first guiding signal is not the guiding signal (i.e. the first guiding signal has no indication function). In this regard, the vehicle charger may consider the charging process to have ended, and may not convert the acquired ac charging signal into a dc charging signal, and the ac charging process for the vehicle may be interrupted, which may seriously affect the charging experience of the vehicle user for the vehicle.

Step 202, under the condition that the first guiding signal is subject to external electromagnetic interference, the vehicle controller disconnects the first link and generates a second guiding signal through a signal generating module in the vehicle, wherein the signal generating module is not subject to external electromagnetic interference.

It should be appreciated that the "signal generation module" in step 202 may be considered a signal generator. The signal generator is a device capable of providing electrical signals of various frequencies, waveforms and output levels.

It should also be appreciated that the signal generation module is disposed within an electromagnetic shield in the vehicle, and that the signal generation module is not susceptible to external electromagnetic interference, and therefore, the second guidance signal generated by the signal generation module is also not susceptible to external electromagnetic interference. And under the condition that the first guide signal is subjected to external electromagnetic interference, a first link for transmitting the first guide signal is disconnected, and at the moment, the first guide signal does not have a function of indicating the vehicle-mounted charger to convert the acquired alternating-current charging signal into a direct-current charging signal so as to charge the vehicle-mounted battery. That is, the vehicle's alternating current charging process may be interrupted at this time, which may seriously affect the vehicle user's charging experience for the vehicle. Step 202 generates a second guiding signal through the signal generating module to instruct the vehicle-mounted charger to convert the ac charging signal obtained from the ac charging pile into a dc charging signal to charge the vehicle-mounted battery in the vehicle. This can continue to maintain the vehicle's alternating current charging process.

Fig. 3 is a schematic structural diagram of an ac charging process of a vehicle according to an embodiment of the present application.

Illustratively, as shown in FIG. 3, a vehicle includes a signal generation module, an on-board charger, a first switch module, and a second switch module. In the case of a vehicle in an ac charging scenario, the ac charging stake transmits an ac charging signal to the on-board charger over the target link and a first guidance signal to the on-board charger over the first link. The vehicle-mounted charger converts the alternating-current charging signal into a direct-current charging signal based on the indication effect of the first guiding signal to charge a vehicle-mounted battery in the vehicle. Under the condition that the first guiding signal is subjected to external electromagnetic interference, the first guiding signal does not have an indication function (the first guiding signal cannot indicate the vehicle-mounted charger to convert the alternating-current charging signal into the direct-current charging signal to charge the vehicle-mounted battery in the vehicle), and the alternating-current charging process of the vehicle is interrupted. At this time, the vehicle controller controls the switch in the first switch module to be turned on, i.e., disconnects the first link in fig. 3. So that the first guiding signal subjected to external electromagnetic interference is not transmitted to the vehicle-mounted charger. The vehicle controller generates a second guiding signal through the signal generating module and controls the switch in the second switch module in fig. 3 to be closed, namely, a second link between the signal generating module and the vehicle-mounted charger is established, and the second guiding signal is transmitted to the vehicle-mounted charger through the second link. In this way, the on-board charger can be instructed to convert the alternating current charging signal into the direct current charging signal through the second guiding signal so as to charge the on-board battery, and the process of charging the on-board battery can be continuously maintained.

In a possible implementation manner, the method for determining that the first guiding signal in step 202 is subject to external electromagnetic interference includes any one of the following: when the number of the amplitude values corresponding to the first guide signals is larger than the preset number, the whole vehicle controller determines that the first guide signals are subjected to external electromagnetic interference; and under the condition that the signal parameters of the first guide signals indicate that the signal waveforms of the first guide signals are not rectangular waves, the whole vehicle controller determines that the first guide signals are subjected to external electromagnetic interference.

In some embodiments, the preset number is 2.

In some embodiments, the first pilot signal corresponds to a magnitude of ±12v.

In the above technical solution, the signal waveform of the standard first guiding signal is rectangular wave, and the number of amplitude values corresponding to the rectangular wave is 2. Therefore, the scheme can determine that the first guiding signal is subjected to external electromagnetic interference under the condition that the number of the corresponding amplitude values of the first guiding signal is larger than the preset number (2) or the signal parameter of the first guiding signal indicates that the signal waveform of the first guiding signal is not a rectangular wave.

In some embodiments, the vehicle includes a first switch module on a first link between the ac charging stake and the on-board charger, step 202, comprising: under the condition that the first guide signal is subjected to external electromagnetic interference, the whole vehicle controller controls a switch in the first switch module to be opened so as to disconnect the first link.

In a possible implementation, after step 202, the method 200 further includes: the whole vehicle controller transmits the first guiding signal to a signal receiving module in the vehicle through a third link, wherein the third link is a link between the alternating current charging pile and the signal receiving module, and the signal receiving module is used for receiving the first guiding signal subjected to external electromagnetic interference.

It should be understood that the "third link" in the above-described scheme refers to a communication link between the ac charging stake and the signal receiving module. The third link is used for transmitting the first guiding signal subjected to electromagnetic interference to the signal receiving module so as to avoid the phenomenon that the alternating-current charging pile is only in an output state and no equipment receives the first guiding signal subjected to electromagnetic interference, and avoid the impact of lightning stroke on the alternating-current charging pile in lightning weather.

It should also be appreciated that the "signal receiving module" in the above scheme has tolerance capability (capability of allowing reception of an abnormal signal). The signal receiving module is only used for receiving signals, whether the signals are normal signals or abnormal signals or not. The signal receiving module is not provided with a judging function, and is only used for receiving the CP signal, so that the AC charging pile is ensured to be in the output state of the CP signal.

In the above technical solution, the first link is disconnected under the condition that the first guiding signal is subject to external electromagnetic interference; after the second guide signal is generated by the signal generating module in the vehicle, the scheme also transmits the first guide signal to the signal receiving module through a third link between the signal receiving module in the vehicle and the alternating current charging pile. According to the scheme, the phenomenon that the alternating-current charging pile only outputs the first guiding signal and the equipment does not receive the first guiding signal can be avoided, and the impact of lightning stroke on the alternating-current charging pile in lightning weather is avoided. The scheme can improve the service life of the alternating current charging pile.

In some embodiments, the vehicle includes a third switch module on a third link between the ac charging stake and the signal receiving module, step 203, comprising: and the whole vehicle controller controls the switch in the third switch module to be closed, and the first guide signal is transmitted to the signal receiving module through a third link formed by closing the switch in the third switch module.

Fig. 4 is a schematic structural view of an ac charging process of another vehicle according to an embodiment of the present application.

Illustratively, as shown in fig. 4, a vehicle includes a signal generating module, an on-board charger, a first switching module, a second switching module, a third switching module, and a signal receiving module. In the case of a vehicle in an ac charging scenario, the ac charging stake transmits an ac charging signal to the on-board charger over the target link and a first guidance signal to the on-board charger over the first link. The vehicle-mounted charger converts the alternating-current charging signal into a direct-current charging signal based on the indication effect of the first guiding signal to charge a vehicle-mounted battery in the vehicle. Under the condition that the first guiding signal is subjected to external electromagnetic interference, the first guiding signal does not have an indication function (the first guiding signal cannot indicate the vehicle-mounted charger to convert the alternating-current charging signal into the direct-current charging signal to charge the vehicle-mounted battery in the vehicle), and the alternating-current charging process of the vehicle is interrupted. At this time, the vehicle controller controls the switch in the first switch module to be turned on, i.e., disconnects the first link in fig. 4. So that the first guiding signal subjected to external electromagnetic interference is not transmitted to the vehicle-mounted charger. The vehicle controller generates a second guiding signal through the signal generating module, and controls the switch in the second switch module in fig. 4 to be closed, namely, a second link between the signal generating module and the vehicle-mounted charger is established, and the second guiding signal is transmitted to the vehicle-mounted charger. In this way, the on-board charger can be instructed to convert the alternating current charging signal into the direct current charging signal through the second guiding signal so as to charge the on-board battery, and the process of charging the on-board battery can be continuously maintained. In addition, the vehicle controller controls the switch in the third switch module to be closed, namely, a third link between the alternating-current charging pile and the signal receiving module is established, so that the alternating-current charging pile transmits the first guide signal to the signal receiving module through the third link. According to the scheme, the phenomenon that the first guiding signal is not received can be avoided, the impact of lightning strike on the alternating current charging pile in lightning weather is avoided, and the service life of the alternating current charging pile can be prolonged.

In some embodiments, the method 200 further comprises: and under the condition that the first guiding signal is subjected to external electromagnetic interference and the first signal tolerance corresponding to the first guiding signal is larger than the preset signal tolerance, the whole vehicle controller executes the steps of disconnecting the first link and generating a second guiding signal through a signal generating module in the vehicle, wherein the preset signal tolerance is used for indicating the allowed deviation between the received guiding signal and the preset guiding signal.

It should be appreciated that the above approach refers to receiving a first guidance signal through a first link between an on-board charger in a vehicle and an ac charging stake in the event that the vehicle is in an ac charging scenario; and under the condition that the first guide signal is subjected to external electromagnetic interference and the first signal tolerance corresponding to the first guide signal is larger than the preset signal tolerance, disconnecting the first link, generating a second guide signal through a signal generating module in the vehicle, and transmitting the second guide signal to the vehicle-mounted charger through the second link to instruct the vehicle-mounted charger to convert the received alternating-current charging signal into a direct-current charging signal so as to charge the vehicle-mounted battery.

It should be further understood that "the first signal tolerance corresponding to the first pilot signal" in the above scheme may be specifically understood as: deviation between the first guiding signal received by the vehicle-mounted charger and the preset guiding signal. The "preset signal tolerance" in the above scheme is used to indicate the allowed deviation between the received guiding signal and the preset guiding signal. The deviation includes a deviation of the signal amplitude, a deviation of the signal duty cycle, a deviation of the signal frequency, and a deviation of the signal peak. The signal duty ratio refers to the ratio of time that the pilot signal occupies in one signal period at a high level without distortion.

In the above technical scheme, when the first guiding signal is subjected to smaller external electromagnetic interference under normal conditions, the vehicle-mounted charger can consider that the first guiding signal is not subjected to external electromagnetic interference, or can instruct the vehicle-mounted charger to convert the received alternating current charging signal into the direct current charging signal, so as to realize the charging process of the vehicle-mounted battery. Therefore, the second guiding signal can be generated by the signal generating module only when the first guiding signal is subject to external electromagnetic interference and the first signal tolerance corresponding to the first guiding signal is larger than the preset signal tolerance, namely when the first guiding signal is subject to larger external electromagnetic interference. This process can avoid a lot of energy consumption of the vehicle.

In step 203, the vehicle controller transmits the second instruction signal to the vehicle-mounted charger through a second link between the signal generating module and the vehicle-mounted charger.

It should be understood that the "second link" in step 203 refers to a communication link between the signal generating module and the vehicle-mounted charger, where the second link is used to transmit a second instruction signal to the vehicle-mounted charger, so as to instruct the vehicle-mounted charger to convert the acquired ac charging signal into the dc charging signal to charge the vehicle-mounted battery, where the first instruction signal is subject to external electromagnetic interference, instead of the indication effect of the first instruction signal.

In some embodiments, the vehicle includes a second switch module on a second link between the signal generating module and the on-board charger, step 203, comprising: and the whole vehicle controller controls the switch in the second switch module to be closed, and the second instruction signal is transmitted to the vehicle-mounted charger through a second link formed by the closed switch in the second switch module.

In some embodiments, after step 203, the method 200 further comprises: the vehicle controller detects the signal quality of the first guide signal received by the signal receiving module; under the condition that the signal quality is in a normal range, the whole vehicle controller is used for reconnecting the disconnected first link; and the whole vehicle controller disconnects the second link from the third link.

It should be understood that the pilot signal is a rectangular wave signal, and the pilot signal has a target signal parameter such as a fixed amplitude, a fixed duty cycle, a fixed frequency, a fixed peak value, and the like. The vehicle controller can measure the signal quality of the first guiding signal through the target signal parameter. Specifically, when the deviation between the signal parameter corresponding to the first guide signal and the target signal parameter is in a preset range, the whole vehicle controller determines that the signal quality of the first guide signal is in a normal range; otherwise, the signal quality of the first guiding signal is in an abnormal range.

In the above technical solution, it is described that, under the condition that the signal quality of the first guiding signal received by the signal receiving module is in a normal range, that is, under the condition that the first guiding signal is no longer subject to external electromagnetic interference, the vehicle controller reconnects the first link, and disconnects the second link and the third link. The second index signal is no longer generated by the signal generation module and is transmitted to the on-board charger over the second link. The scheme not only can reduce the energy consumption of the vehicle, but also can enable the vehicle-mounted charger to receive the guide signal which is not interfered by the external electromagnetic interference, and continue to charge the vehicle-mounted charger.

It will be appreciated that the first index signal is also subject to other effects to be deformed. In some embodiments, the first indexing signal is deformed when the ac charging stake fails.

In some embodiments, the method for determining deformation of the first guiding signal due to failure of the ac charging pile includes: the vehicle controller compares the signal parameter corresponding to the first guiding signal with the target signal parameter; and under the condition that the signal parameters are different from the target signal parameters, the whole vehicle controller determines that the first guide signal is deformed due to the fault of the alternating current charging pile.

In some embodiments, after step 203, the method 200 further comprises at least one of: the vehicle controller sends first reminding information to a target terminal, wherein the first reminding information is used for reminding that the alternating-current charging process of the vehicle is influenced by external electromagnetic interference, and the target terminal is a terminal with control authority of the vehicle; the vehicle controller displays first reminding information on a host display screen of the vehicle; the whole vehicle controller controls a steering wheel of the vehicle to vibrate based on the first reminding information; the vehicle controller controls the seat of the vehicle to vibrate based on the first reminding information.

According to the technical scheme, the vehicle controller sends the first reminding information to the target terminal, so that the target object of the target terminal can check the first reminding information to remind that the alternating-current charging process of the vehicle is influenced by external electromagnetic interference. Or the whole vehicle controller reminds that the alternating-current charging process of the vehicle is influenced by external electromagnetic interference by controlling a mode of displaying first reminding information on a vehicle part in the vehicle or controlling the vehicle part in the vehicle to vibrate based on the first reminding information.

It should be appreciated that the method 200 is an effect that, in the case that the first guiding signal is subject to external electromagnetic interference, the signal generating module in the vehicle generates the second guiding signal instead of the first guiding signal for instructing the vehicle-mounted charger to convert the acquired ac charging signal into the dc charging signal, so as to charge the vehicle-mounted battery. Another method of juxtaposing the method 200 is also presented, as follows.

In some embodiments, when the vehicle is in an ac charging scene, the vehicle controller receives a first guiding signal through a first link between the vehicle-mounted charger and the ac charging pile, where the guiding signal is used to instruct the vehicle-mounted charger to convert the acquired ac charging signal into a dc charging signal so as to charge the vehicle-mounted battery; under the condition that the first guiding signal is subjected to external electromagnetic interference, the whole vehicle controller adjusts the corresponding preset signal tolerance of the vehicle-mounted charger to be a second signal tolerance, wherein the second signal tolerance is larger than the preset signal tolerance, and the preset signal tolerance is used for indicating the deviation between the received guiding signal allowed by the vehicle-mounted charger and the preset guiding signal.

In the above technical solution, when the first guiding signal is subject to external electromagnetic interference, the vehicle controller increases the tolerance of the preset signal corresponding to the vehicle-mounted charger, that is, adjusts the tolerance capability of the vehicle-mounted charger to the guiding signal, so that the first guiding signal subject to external electromagnetic interference can also instruct the vehicle-mounted charger to convert the acquired ac charging signal into the dc charging signal, and charge the vehicle-mounted battery. The method does not need a signal generation module in the vehicle to generate the second instruction signal and does not need to arrange a switch module so as to control the alternating current charging of the vehicle to be uninterrupted at lower cost.

Fig. 5 is a schematic structural diagram of an apparatus for eliminating electromagnetic interference according to an embodiment of the present application.

Illustratively, as shown in FIG. 5, the apparatus 500 is mounted to a vehicle, the apparatus 500 comprising:

the receiving module 501 is configured to receive, when the vehicle is in an ac charging scene, a first guiding signal through a first link between the vehicle-mounted charger and the ac charging pile, where the guiding signal is used to instruct the vehicle-mounted charger to convert the acquired ac charging signal into a dc charging signal, so as to charge the vehicle-mounted battery;

the processing module 502 is configured to disconnect the first link and generate a second instruction signal through a signal generating module in the vehicle when the first instruction signal is subject to external electromagnetic interference, where the signal generating module is not subject to external electromagnetic interference;

a transmission module 503, configured to transmit the second instruction signal to the on-vehicle charger through a second link between the signal generating module and the on-vehicle charger.

Optionally, under the condition that the first guiding signal is subject to external electromagnetic interference, disconnecting the first link; after the second instruction signal is generated by the signal generating module in the vehicle, the transmitting module 503 is further configured to transmit the first instruction signal to the signal receiving module in the vehicle through a third link, where the third link is a link between the ac charging pile and the signal receiving module, and the signal receiving module is configured to receive the first instruction signal that is subject to external electromagnetic interference.

Optionally, the apparatus 500 further includes: a determination module for any one of the following: under the condition that the number of the amplitude values corresponding to the first guide signals is larger than the preset number, determining that the first guide signals are subjected to external electromagnetic interference; and determining that the first guide signal is subjected to external electromagnetic interference under the condition that the signal parameter of the first guide signal indicates that the signal waveform of the first guide signal is not rectangular.

Optionally, the processing module is further configured to execute the step of disconnecting the first link and generating, by the signal generating module in the vehicle, a second guiding signal if the first guiding signal is subject to external electromagnetic interference and a first signal tolerance corresponding to the first guiding signal is greater than a preset signal tolerance, where the preset signal tolerance is used to indicate an allowable deviation between the received guiding signal and a preset guiding signal.

Fig. 6 is a schematic structural diagram of another system for eliminating electromagnetic interference according to an embodiment of the present application.

Illustratively, as shown in FIG. 6, the system 600 includes:

a signal generation module 601, a first switching module 602, a second switching module 603, an in-vehicle charger 604, and a control module 605;

In the case that the vehicle is in an ac charging scene, the control module 605 controls the vehicle-mounted charger 604, and establishes a connection with an ac charging pile through the first switch module 602, where the vehicle-mounted charger 604 is configured to receive a first guiding signal through a connection relationship between the ac charging pile and the vehicle-mounted charger 604, and the guiding signal is configured to instruct the vehicle-mounted charger 604 to convert the acquired ac charging signal into a dc charging signal so as to charge the vehicle-mounted battery;

under the condition that the first guiding signal meets the preset condition, the control module 605 controls the vehicle-mounted charger 604 to be disconnected with the alternating current charging pile through the first switch module 602, and controls the signal generating module 601 to be connected with the vehicle-mounted charger 604 through the second switch module 603, the signal generating module 601 is used for generating a second guiding signal and transmitting the second guiding signal to the vehicle-mounted charger 604, and the signal generating module 601 is not affected by external electromagnetic interference, and the preset condition is that the first guiding signal is affected by external electromagnetic interference.

It should be understood that the implementation of the "vehicle" in the above solution is the same as the "vehicle" in step 201 in the method 200, and is an electric vehicle or a hybrid vehicle. In addition, for the understanding of the "first guiding signal" and the "signal generating module" in the above solution, reference may be made to the specific descriptions of the "first guiding signal" in step 201 and the "signal generating module" in step 202, respectively, which are not repeated here.

In some embodiments, the system 600 further comprises a third switching module 606 and a signal receiving module 607;

in the case that the first guiding signal meets the preset condition, the control module 605 controls the signal receiving module 607 to establish a connection with the ac charging pile through the third switch module 606, and the signal receiving module 607 is configured to receive the first guiding signal subjected to external electromagnetic interference through a connection relationship between the third switch module and the ac charging pile.

It should be understood that the understanding of the "signal receiving module" in the above scenario is the same as the signal receiving module in the method 200. And will not be described in detail herein.

In the above technical scheme, the system further comprises a third switch module and a signal receiving module. Under the condition that the first guide signal is subjected to external electromagnetic interference, disconnecting the first link; after the second guide signal is generated by the signal generating module in the vehicle, the system also transmits the first guide signal subjected to external electromagnetic interference to the signal receiving module by the third switch module. This can avoid the AC charging stake only to export first guide signal, and the phenomenon that no equipment received first guide signal, avoids the thunderbolt to cause the impact to the AC charging stake when thunderbolt weather. The scheme can improve the service life of the alternating current charging pile.

In some embodiments, the system 600 further includes a detection module 608;

the control module 605 controls the detection module 608 to be connected with the ac charging pile, and determines that the first guiding signal is subject to external electromagnetic interference through the detection module 608 when the number of the magnitudes corresponding to the first guiding signal is greater than a preset number; or, the detection module 608 determines that the first guiding signal is subject to external electromagnetic interference when the signal parameter of the first guiding signal indicates that the signal waveform of the first guiding signal is not a rectangular wave.

In some embodiments, the preset number is 2.

In some embodiments, the predetermined condition may be that the first guiding signal is subject to external electromagnetic interference and the first signal tolerance corresponding to the first guiding signal is greater than a predetermined signal tolerance, where the predetermined signal tolerance is used to indicate an allowable deviation between the received guiding signal and the predetermined guiding signal.

Fig. 7 is a schematic structural diagram of another system for eliminating electromagnetic interference according to an embodiment of the present application.

The system 600 includes a signal generation module 601, a first switching module 602, a second switching module 603, an on-board charger 604, and a control module 605;

The system 600 further comprises a third switching module 606 and a signal receiving module 607;

Fig. 8 is a schematic structural diagram of another system for eliminating electromagnetic interference according to an embodiment of the present application.

The system 600 further comprises a third switch module 606, a signal receiving module 607 and a detection module 608, the control module 605 controlling the detection module 608 to be connected with the ac charging pile;

The control module 605 determines, through the detection module 608, that the first guiding signal is subject to external electromagnetic interference when the number of the magnitudes corresponding to the first guiding signal is greater than a preset number; or, the detection module 608 determines that the first guiding signal is subject to external electromagnetic interference when the signal parameter of the first guiding signal indicates that the signal waveform of the first guiding signal is not a rectangular wave.

In some embodiments, the control module 605 controls the ac charging post to reestablish connection with the on-board charger when detecting that the signal quality of the first guidance signal received by the signal receiving module is in a normal range, the on-board charger being disconnected from the signal generating module by the second switching module, and the signal receiving module being disconnected from the ac charging post by the third switching module.

In the above technical solution, it is described that the connection situation between the plurality of modules in the system is described in the case that the signal quality of the first guiding signal received by the signal receiving module is in the normal range, that is, in the case that the first guiding signal is no longer subject to the external electromagnetic interference. The scheme not only can reduce the energy consumption of the vehicle, but also can enable the vehicle-mounted charger to receive the guide signal which is not interfered by the external electromagnetic interference, and continue to charge the vehicle-mounted charger.

Illustratively, as shown in FIG. 9, the vehicle 900 includes: a memory 901, a processor 902 and a computer program 903 stored in the memory 901 and running on the processor 902, wherein the processor 902, when executing the computer program 903, enables the vehicle to perform any one of the methods of electromagnetic interference rejection described above.

In this embodiment, the vehicle may be divided into functional modules according to the above method example, for example, each functional module may be corresponding to a specific functional module, or two or more functions may be integrated into one processing module, where the integrated modules may be implemented in a hardware form. It should be noted that, in this embodiment, the division of the modules is schematic, only one logic function is divided, and another division manner may be implemented in actual implementation.

In the case of dividing each function module with corresponding each function, the vehicle may include: a receiving module, a processing module, a determining module, a transmitting module and the like. It should be noted that, all relevant contents of each step related to the above method embodiment may be cited to the functional description of the corresponding functional module, which is not described herein.

The vehicle provided in the present embodiment is used for executing the above method for eliminating electromagnetic interference, so that the same effects as those of the implementation method can be achieved.

In case an integrated unit is employed, the vehicle may comprise a processing module, a memory module. The processing module can be used for controlling and managing the actions of the vehicle. The memory module may be used for the vehicle to execute, inter alia, program codes and data.

Wherein the processing module may be a processor or controller that may implement or execute the various illustrative logical blocks, modules, and circuits described in connection with the present disclosure. A processor may also be a combination of computing functions, e.g., including one or more microprocessors, digital signal processing (digital signal processing, DSP) and microprocessor combinations, etc., and a memory module may be a memory.

The present embodiments provide a computer readable storage medium having instructions stored therein which, when executed on a computer or processor, cause the computer or processor to perform any of the methods of electromagnetic interference rejection described above.

The present embodiments also provide a computer program product comprising instructions which, when executed on a computer or processor, cause the computer or processor to perform the above-described related steps to implement any of the methods of removing electromagnetic interference described above.

The vehicle, the computer readable storage medium, the computer program product or the chip containing the instructions provided in this embodiment are used to execute the corresponding method provided above, so that the benefits achieved by the method can refer to the benefits in the corresponding method provided above, and are not repeated herein.

It will be appreciated by those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional modules is illustrated, and in practical application, the above-described functional allocation may be performed by different functional modules according to needs, i.e. the internal structure of the apparatus is divided into different functional modules to perform all or part of the functions described above.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of modules or units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another apparatus, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of rejecting electromagnetic interference, the method comprising:

when the vehicle is in an alternating-current charging scene, a first guide signal is received through a first link between the vehicle-mounted charger and the alternating-current charging pile, and the guide signal is used for indicating the vehicle-mounted charger to convert the acquired alternating-current charging signal into a direct-current charging signal so as to charge the vehicle-mounted battery;

under the condition that the first guide signal is subjected to external electromagnetic interference, the first link is disconnected, and a second guide signal is generated through a signal generating module in the vehicle, wherein the signal generating module is not subjected to external electromagnetic interference;

and transmitting the second instruction signal to the vehicle-mounted charger through a second link between the signal generating module and the vehicle-mounted charger.

2. The method of claim 1, wherein after disconnecting the first link and generating a second index signal by a signal generation module in the vehicle in the event that the first index signal is subject to external electromagnetic interference, the method further comprises:

and transmitting the first guiding signal to a signal receiving module in the vehicle through a third link, wherein the third link is a link between the alternating current charging pile and the signal receiving module, and the signal receiving module is used for receiving the first guiding signal subjected to external electromagnetic interference.

3. The method of claim 1, wherein the method of determining that the first guidance signal is subject to external electromagnetic interference comprises any one of:

determining that the first guide signal is subjected to external electromagnetic interference under the condition that the number of the amplitude values corresponding to the first guide signal is larger than a preset number;

and determining that the first guide signal is subjected to external electromagnetic interference under the condition that the signal parameter of the first guide signal indicates that the signal waveform of the first guide signal is not rectangular wave.

4. The method according to claim 1, wherein the method further comprises:

and under the condition that the first guiding signal is subjected to external electromagnetic interference and the first signal tolerance corresponding to the first guiding signal is larger than the preset signal tolerance, executing the steps of disconnecting the first link and generating a second guiding signal through a signal generating module in the vehicle, wherein the preset signal tolerance is used for indicating the allowed deviation between the received guiding signal and the preset guiding signal.

5. A system for eliminating electromagnetic interference, which is characterized by comprising a control module, a signal generation module, a first switch module, a second switch module and an on-vehicle charger;

When a vehicle is in an alternating-current charging scene, the control module controls the vehicle-mounted charger, connection is established between the vehicle-mounted charger and an alternating-current charging pile through the first switch module, the vehicle-mounted charger is used for receiving a first guide signal through the connection relation between the alternating-current charging pile and the vehicle-mounted charger, and the guide signal is used for indicating the vehicle-mounted charger to convert an acquired alternating-current charging signal into a direct-current charging signal so as to charge a vehicle-mounted battery;

6. The system of claim 5, further comprising a third switch module and a signal receiving module;

And under the condition that the first guide signal meets the preset condition, the control module controls the signal receiving module to establish connection with the alternating current charging pile through the third switch module, and the signal receiving module is used for receiving the first guide signal subjected to external electromagnetic interference through the connection relation between the third switch module and the alternating current charging pile.

7. The system of claim 5, further comprising a detection module;

8. The system of any of claims 5-7, wherein the predetermined condition is that the first pilot signal is subject to external electromagnetic interference and the first signal tolerance corresponding to the first pilot signal is greater than a predetermined signal tolerance, the predetermined signal tolerance being used to indicate an allowable deviation between the received pilot signal and the predetermined pilot signal.

9. A vehicle comprising a system for electromagnetic interference rejection according to any one of claims 5 to 8.

10. A computer readable storage medium having instructions stored therein which, when executed on a computer or processor, cause the computer or processor to perform the method of excluding electromagnetic interference as claimed in any of claims 1 to 4.