Methods, systems, vehicles, and storage media to exclude electromagnetic interference

Abstract

The application provides a method, system, vehicle and storage medium for excluding electromagnetic interference. When a first guide signal is detected to be interfered by external electromagnetic interference, a first link originally transmitting the first guide signal is disconnected, so that the first guide signal will not be transmitted to the on-board charger. A second guide signal is generated by a signal generation module in the vehicle, and the second guide signal is transmitted to the on-board charger through a second link. Since the signal generation module is not interfered by external electromagnetic interference, the second guide signal is not easily interfered by external electromagnetic interference. The second guide signal is used to instruct the on-board charger to continue converting an alternating current charging signal into a direct current charging signal to charge the on-board battery. Therefore, when the first guide signal is interfered by external electromagnetic interference, the second guide signal can be regenerated to realize the function of the first guide signal, so as to avoid interruption of the alternating current charging process and continuously perform the alternating current charging process of the vehicle.

Description

Technical Field

[0001] This application relates to the field of vehicle charging, and more specifically, to methods, systems, vehicles, and storage media for eliminating electromagnetic interference in the field of vehicle charging. Background Technology

[0002] With the gradual promotion of vehicle electrification, charging scenarios for electric vehicles are becoming increasingly common. In one embodiment, the electric vehicle sends a Control Pilot (CP) signal to the On-Board Charger (OBC) via an AC charging station. This instructs the OBC 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 (PWM) signal used for handshaking communication between the electric vehicle and the AC charging station.

[0003] However, in electric vehicle charging scenarios, the charging contact (CP) signal is transmitted from outside the electric vehicle. The CP signal is susceptible to external electromagnetic interference, causing it to deform. The deformed CP signal loses its ability to instruct the onboard charger to convert the acquired AC charging signal into a DC charging signal for charging the electric vehicle, thus interrupting the charging process. Therefore, a method is urgently needed to maintain the charging process even after the CP signal is affected by external electromagnetic interference in electric vehicle charging scenarios. Summary of the Invention

[0004] This application provides a method, system, vehicle, and storage medium for eliminating electromagnetic interference. When a first guidance signal is subjected to external electromagnetic interference, the method can regenerate a second guidance signal to achieve the function of the first guidance signal without affecting the interruption of the vehicle's AC charging process and can continuously charge the vehicle battery.

[0005] In a first aspect, a method for eliminating electromagnetic interference is provided. The method includes: when the vehicle is in an AC charging scenario, receiving a first guidance signal through a first link between the on-board charger and the AC charging pile, the guidance signal being used to instruct the on-board charger to convert the acquired AC charging signal into a DC charging signal to charge the vehicle battery; when the first guidance signal is subject to external electromagnetic interference, disconnecting the first link and generating a second guidance signal through a signal generation module in the vehicle, the signal generation module being unaffected by external electromagnetic interference; and transmitting the second guidance signal to the on-board charger through a second link between the signal generation module and the on-board charger.

[0006] In the above technical solution, when the vehicle is in an AC charging scenario, a first guidance signal is typically received via a first link between the on-board charger and the AC charging pile. This first guidance signal instructs the on-board charger to convert the AC charging signal sent by the AC charging pile into a DC charging signal, thus charging the vehicle battery. The first guidance signal is transmitted from outside the vehicle to inside, and therefore is susceptible to external electromagnetic interference. When the first guidance signal is affected by external electromagnetic interference, its waveform will distort, preventing the on-board charger from converting the AC charging signal into a DC charging signal and thus hindering battery charging. In other words, the AC charging process will be interrupted, severely impacting the user's charging experience. This solution, upon detecting external electromagnetic interference to the first guidance signal, disconnects the first link, preventing the interfered signal from being transmitted to the on-board charger. A second guidance signal is then generated by a signal generation module within the vehicle and transmitted to the on-board charger via a second link. Since this signal generation module is unaffected by external electromagnetic interference, the second guidance signal is less susceptible to such interference. The second guidance signal is transmitted to the on-board charger. When the first guidance signal is subjected to external electromagnetic interference, the second guidance signal replaces the first guidance signal to instruct the on-board charger to continue converting the AC charging signal into a DC charging signal, thus realizing the charging process of the vehicle battery. Therefore, this solution can regenerate the second guidance signal to achieve the function of the first guidance signal when the first guidance signal is subjected to external electromagnetic interference, without affecting the interruption of the vehicle's AC charging process, and can continuously charge the vehicle battery.

[0007] In conjunction with the first aspect, in some possible implementations, when the first guidance signal is subjected to external electromagnetic interference, the first link is disconnected; and after the second guidance signal is generated by the signal generation module in the vehicle, the method further includes: transmitting the first guidance signal to the signal receiving module in the vehicle via a third link, the third link being the link between the AC charging pile and the signal receiving module, the signal receiving module being used to receive the first guidance signal subjected to external electromagnetic interference.

[0008] In the above technical solution, when the first guiding signal is affected by external electromagnetic interference, the first link is disconnected. After the second guiding signal is generated by the signal generation module in the vehicle, the solution also transmits the first guiding signal to the signal receiving module through a third link between the vehicle's signal receiving module and the AC charging pile. This solution avoids the phenomenon where the AC charging pile only outputs the first guiding signal without any device receiving it, and prevents lightning strikes from impacting the AC charging pile during thunderstorms. This solution can improve the service life of the AC charging pile.

[0009] In combination with the first aspect and the above implementation, in some possible implementations, the method for determining that the first guidance signal is subject to external electromagnetic interference includes any one of the following: when the number of amplitude values ​​corresponding to the first guidance signal is greater than a preset number, the first guidance signal is determined to be subject to external electromagnetic interference; when the signal parameters of the first guidance signal indicate that the signal waveform of the first guidance signal is not a rectangular wave, the first guidance signal is determined to be subject to external electromagnetic interference.

[0010] In the above technical solution, the standard first guiding signal has a square wave waveform, and the number of amplitude values ​​corresponding to the square wave is 2. Therefore, this solution can determine that the first guiding signal is subject to external electromagnetic interference when the number of amplitude values ​​corresponding to the first guiding signal is greater than a preset number (2) or when the signal parameters of the first guiding signal indicate that the waveform of the first guiding signal is not a square wave.

[0011] In combination with the first aspect and the above implementation, in some possible implementations, the method further includes: when the first guidance signal is subjected to external electromagnetic interference and the first signal tolerance corresponding to the first guidance signal is greater than a preset signal tolerance, performing the step of disconnecting the first link and generating a second guidance signal through the signal generation module in the vehicle, wherein the preset signal tolerance is used to indicate the allowable deviation between the received guidance signal and the preset guidance signal.

[0012] In the above technical solution, when the vehicle is in an AC charging scenario, a first guidance signal is received through a first link between the vehicle's onboard charger and the AC charging pile. If the first guidance signal is subject to external electromagnetic interference and the corresponding first signal tolerance is greater than a preset signal tolerance, the first link is disconnected, and a second guidance signal is generated by the vehicle's signal generation module. This second guidance signal is then transmitted to the onboard charger via a second link. In some embodiments, even when the first guidance signal is subject to minor external electromagnetic interference, the onboard charger will still consider it unaffected and will still convert the received AC charging signal into a DC charging signal to charge the vehicle battery. Therefore, this solution only generates the second guidance signal when the first guidance signal is subject to external electromagnetic interference and the corresponding first signal tolerance is greater than a preset signal tolerance—that is, when the first guidance signal is subject to significant external electromagnetic interference. This process avoids excessive energy consumption by the vehicle.

[0013] Secondly, a system for eliminating electromagnetic interference is provided, which includes a control module, a signal generation module, a first switch module, a second switch module, and an on-board charger;

[0014] When the vehicle is in an AC charging scenario, the control module controls the on-board charger to establish a connection with the AC charging pile through the first switch module. The on-board charger is used to receive a first guidance signal through the connection relationship between the AC charging pile and the on-board charger. The guidance signal is used to instruct the on-board charger to convert the acquired AC charging signal into a DC charging signal to charge the vehicle battery.

[0015] When the first guidance signal meets the preset conditions, the control module controls the vehicle charger to disconnect from the AC charging pile through the first switch module, and controls the signal generation module to connect to the vehicle charger through the second switch module. The signal generation module is used to generate a second guidance signal and transmit the second guidance signal to the vehicle charger. The signal generation module is not subject to external electromagnetic interference. The preset condition is that the first guidance signal is subject to external electromagnetic interference.

[0016] In the above technical solution, under normal circumstances, when the vehicle is in an AC charging scenario, the on-board charger in the vehicle establishes a connection with the AC charging pile through the first switch module. The on-board charger receives a first guidance signal through the connection between the AC charging pile and the on-board charger. Then, based on the indication of the first guidance signal, the on-board charger converts the acquired AC charging signal into a DC charging signal to charge the vehicle battery. However, when the first guidance signal is affected by external electromagnetic interference, the signal waveform of the first guidance signal will be distorted. At this time, the first guidance signal cannot instruct the on-board charger to convert the AC charging signal sent by the AC charging pile into a DC charging signal, and therefore cannot charge the vehicle battery. In other words, the vehicle's AC charging process will be interrupted, which will seriously affect the charging experience for vehicle users. When the system detects that the first guidance signal is affected by external electromagnetic interference, the on-board charger disconnects from the AC charging pile through the first switch module. This prevents the first guidance signal affected by external electromagnetic interference from being transmitted to the on-board charger. The signal generation module is connected to the vehicle charger via the second switch module. This module generates a second guiding signal and transmits it to the vehicle charger. Because the signal generation module is unaffected by external electromagnetic interference, the second guiding signal is also less susceptible to such interference. Transmitting this second guiding signal to the vehicle charger allows it to replace the function indicated by the first guiding signal when the first guiding signal is affected by external electromagnetic interference, instructing the vehicle charger to continue converting the AC charging signal to a DC charging signal, thus enabling the charging process of the vehicle battery. Therefore, when the first guiding signal is affected by external electromagnetic interference, the system can regenerate the second guiding signal to perform the function of the first guiding signal, without interrupting the vehicle's AC charging process and ensuring continuous charging of the vehicle battery.

[0017] In conjunction with the second aspect, in some possible implementations, the system also includes a third switching module and a signal receiving module;

[0018] When the first guidance signal meets the preset conditions, the control module controls the signal receiving module to establish a connection with the AC charging pile through the third switch module. The signal receiving module is used to receive the first guidance signal affected by external electromagnetic interference through the connection relationship between the third switch module and the AC charging pile.

[0019] The above technical solution also includes a third switch module and a signal receiving module. When the first guidance signal is affected by external electromagnetic interference, the first link is disconnected, and a second guidance signal is generated by the signal generation module in the vehicle. The system then transmits the first guidance signal affected by external electromagnetic interference to the signal receiving module via the third switch module. This avoids the phenomenon where the AC charging pile only outputs the first guidance signal without any device receiving it, and prevents lightning strikes from impacting the AC charging pile during thunderstorms. This solution can improve the service life of the AC charging pile.

[0020] In combination with the second aspect and the above implementation methods, in some possible implementations, the system may also include a detection module;

[0021] The control module controls the connection between the detection module and the AC charging pile, and determines that the first guide signal is subject to external electromagnetic interference when the number of amplitude values ​​corresponding to the first guide signal is greater than a preset number; or, determines that the first guide signal is subject to external electromagnetic interference when the signal parameters of the first guide signal indicate that the signal waveform of the first guide signal is not a rectangular wave.

[0022] In the above technical solution, the standard first guiding signal has a square wave waveform, and the number of amplitude values ​​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 amplitude values ​​corresponding to the first guiding signal is greater than a preset number (2) or when the signal parameters of the first guiding signal indicate that the waveform of the first guiding signal is not a square wave.

[0023] In combination with the second aspect and the above implementation methods, in some possible implementation methods, the preset condition may also be that the first guidance signal is subject to external electromagnetic interference and the first signal tolerance corresponding to the first guidance signal is greater than the preset signal tolerance, and the preset signal tolerance is used to indicate the allowable deviation between the received guidance signal and the preset guidance signal.

[0024] In the above technical solution, when the vehicle is in an AC charging scenario, a first guidance signal is received through a first link between the vehicle's onboard charger and the AC charging pile. If the first guidance signal is subject to external electromagnetic interference and the corresponding first signal tolerance is greater than a preset signal tolerance, the first link is disconnected, and a second guidance signal is generated by the vehicle's signal generation module. This second guidance signal is then transmitted to the onboard charger via a second link. In some embodiments, even when the first guidance signal is subject to minor external electromagnetic interference, the onboard charger will still consider it unaffected and will still convert the received AC charging signal into a DC charging signal to charge the vehicle battery. Therefore, the system can generate a second guidance signal only when the first guidance signal is subject to external electromagnetic interference and the corresponding first signal tolerance is greater than a preset signal tolerance—that is, when the first guidance signal is subject to significant external electromagnetic interference. This process can avoid excessive energy consumption by the vehicle.

[0025] Thirdly, a vehicle is provided, including a memory, a processor, and a computer program stored in the memory and running on the processor, wherein when the processor executes the computer program, the vehicle performs the method described in the first aspect or any possible implementation thereof.

[0026] Fourthly, a computer-readable storage medium is provided that stores instructions which, when executed on a computer or processor, cause the computer or processor to perform the methods described in the first aspect or any possible implementation thereof. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of a vehicle in an AC charging scenario provided in an embodiment of this application;

[0028] Figure 2 This is a schematic flowchart illustrating a method for eliminating electromagnetic interference provided in an embodiment of this application;

[0029] Figure 3 This is a schematic diagram of the AC charging process of a vehicle provided in an embodiment of this application;

[0030] Figure 4 This is a schematic diagram of another vehicle AC charging process provided in an embodiment of this application;

[0031] Figure 5 This is a schematic diagram of the structure of a device for eliminating electromagnetic interference provided in an embodiment of this application;

[0032] Figure 6This is a schematic diagram of the structure of a system for eliminating electromagnetic interference provided in an embodiment of this application;

[0033] Figure 7 This is a schematic diagram of another system for eliminating electromagnetic interference provided in an embodiment of this application;

[0034] Figure 8 This is a schematic diagram of another system for eliminating electromagnetic interference provided in an embodiment of this application;

[0035] Figure 9 This is a schematic diagram of the structure of a vehicle provided in an embodiment of this application. Detailed Implementation

[0036] The technical solutions of this application will now be described clearly and in detail with reference to the accompanying drawings. In the description of the embodiments of this application, "multiple" refers to two or more. The terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0037] Figure 1 This is a schematic diagram of a vehicle in an AC charging scenario provided in an embodiment of this application.

[0038] It should be understood that inserting the charging gun of an AC charging station into the vehicle's charging port puts the vehicle into an AC charging scenario. In this AC charging scenario, the AC charging station transmits an AC charging signal and a guidance signal to the vehicle's onboard charger via the charging gun. The guidance signal instructs the onboard charger to convert the AC charging signal into a DC charging signal and then transmit the DC charging signal to the vehicle's onboard battery to charge it.

[0039] For example, such as Figure 1 As shown, the AC charging pile transmits a guidance signal to the vehicle's onboard charger via a first link, and then transmits an AC charging signal to the onboard charger via a target link, at which point the vehicle is in an AC charging scenario. Upon receiving the AC charging signal and the guidance signal, and determining that the signal quality of the guidance signal is within the normal range, the onboard charger converts the AC charging signal into a DC charging signal based on the guidance signal's indicative function. The onboard charger then transmits this DC charging signal to the vehicle's battery to charge it. If the signal quality of the guidance signal is determined to be within the abnormal range, the onboard charger determines that the guidance signal is being interfered with, possibly by external electromagnetic interference. In this case, the onboard charger stops converting the AC charging signal, and the vehicle's AC charging process is interrupted.

[0040] To address the problem that the AC charging process of a vehicle is interrupted due to external electromagnetic interference when the vehicle is in an AC charging scenario, this application proposes a method to eliminate electromagnetic interference in order to continue the charging process of the vehicle battery, as detailed in method 200 below.

[0041] Figure 2 This is a schematic flowchart illustrating a method for eliminating electromagnetic interference provided in an embodiment of this application.

[0042] It should be understood that the method for eliminating electromagnetic interference provided in the embodiments of this application can be applied to... Figure 1 The vehicle shown. Specifically, this method for eliminating electromagnetic interference can be applied to the vehicle's overall controller.

[0043] For example, such as Figure 2 As shown, the method 200 includes:

[0044] Step 201: When the vehicle is in an AC charging scenario, the vehicle controller receives a first guidance signal through the first link between the on-board charger and the AC charging pile. The guidance signal is used to instruct the on-board charger to convert the acquired AC charging signal into a DC charging signal to charge the on-board battery.

[0045] It should be understood that vehicles using AC charging stations for AC charging are electric vehicles or hybrid vehicles, and the "vehicle" in step 201 refers to either an electric vehicle or a hybrid electric vehicle. Specifically, an electric vehicle is a model whose power source is entirely provided by the vehicle's onboard power supply, using a traction electric motor to drive the wheels. A hybrid electric vehicle is a combination of fuel (gasoline or diesel) and electricity, meaning it uses an electric motor as an auxiliary power source to drive the wheels.

[0046] It should also be understood that currently, when a vehicle is in an AC charging scenario, the AC charging station is connected to the on-board charger. Specifically, the on-board charger receives a first guidance signal sent by the AC charging station through a first link between the on-board charger and the AC charging station. The on-board charger obtains the AC charging signal sent by the AC charging station through a target link between the on-board charger and the AC charging station. The first guidance signal is used to instruct the on-board charger to convert the AC charging signal into a DC charging signal to charge the vehicle's battery. The "first link" refers to the communication link between the on-board charger and the AC charging station. This first link is used to transmit the first guidance signal to the on-board charger, so that the on-board charger, based on the indication of the first guidance signal, converts the obtained AC charging signal into a DC charging signal to charge the vehicle's battery.

[0047] It should also be understood that the "first guidance signal" in step 201 can be regarded as a Control Pilot (CP) signal. This CP signal is used in the AC charging process of the vehicle to instruct the on-board charger to convert the acquired AC charging signal into a DC charging signal to charge the on-board battery. Specifically, the first guidance signal is a Pulse Width Modulation (PWM) signal, which is a rectangular wave signal.

[0048] It should also be understood that when the vehicle is in an AC charging scenario, the first guidance signal is transmitted from outside the vehicle to the onboard charger via the first link. Therefore, this first guidance signal is susceptible to external electromagnetic interference. When this first guidance signal is subjected to external electromagnetic interference, its waveform will be distorted. Upon receiving this first guidance signal affected by external electromagnetic interference, the onboard charger will assume that no guidance signal has been received because the first guidance signal has been distorted and is no longer a guidance signal (i.e., the first guidance signal no longer has an indicative function). Consequently, the onboard charger will consider the charging process complete and will no longer convert the acquired AC charging signal into a DC charging signal. This will interrupt the vehicle's AC charging process, severely impacting the charging experience for vehicle users.

[0049] Step 202: When the first guidance signal is subjected to external electromagnetic interference, the vehicle controller disconnects the first link and generates a second guidance signal through the signal generation module in the vehicle, which is not subject to external electromagnetic interference.

[0050] It should be understood that the "signal generation module" in step 202 can be considered as a signal generator. This signal generator is a device capable of providing electrical signals of various frequencies, waveforms, and output levels.

[0051] It should also be understood that the signal generation module is housed within an electromagnetic shield within the vehicle, making it less susceptible to external electromagnetic interference. Therefore, the second guidance signal generated by this module is also less susceptible to external electromagnetic interference. If the first guidance signal is affected by external electromagnetic interference, the first link used to transmit it is disconnected. In this case, the first guidance signal no longer instructs the on-board charger to convert the acquired AC charging signal into a DC charging signal to charge the vehicle battery. In other words, the vehicle's AC charging process is interrupted, which severely impacts the user's charging experience. Step 202 generates a second guidance signal through the signal generation module to instruct the on-board charger to convert the AC charging signal obtained from the AC charging station into a DC charging signal to charge the vehicle's battery. This allows the vehicle's AC charging process to continue.

[0052] Figure 3 This is a structural schematic diagram of an AC charging process for a vehicle provided in an embodiment of this application.

[0053] For example, such as Figure 3 As shown, the vehicle includes a signal generation module, an on-board charger, a first switch module, and a second switch module. When the vehicle is in an AC charging scenario, the AC charging pile transmits the AC charging signal to the on-board charger via a target link and transmits a first guidance signal to the on-board charger via a first link. The on-board charger converts the AC charging signal into a DC charging signal based on the indication function of the first guidance signal to charge the vehicle's battery. When the first guidance signal is affected by external electromagnetic interference, it loses its indicative function (the first guidance signal cannot instruct the on-board charger to convert the AC charging signal into a DC charging signal to charge the vehicle's battery), and the AC charging process is interrupted. At this time, the vehicle controller controls the switch in the first switch module to open, i.e., disconnect. Figure 3 The first link in the system ensures that the first guidance signal, susceptible to external electromagnetic interference, will not be transmitted to the on-board charger. The vehicle controller generates a second guidance signal through this signal generation module and controls... Figure 3 When the switch in the second switching module is closed, a second link is established between the signal generation module and the on-board charger. This second link transmits a second guiding signal to the on-board charger. The second guiding signal instructs the on-board charger to convert the AC charging signal into a DC charging signal to charge the vehicle battery, thus maintaining the charging process.

[0054] In one possible implementation, the method for determining whether the first guidance signal is subject to external electromagnetic interference in step 202 includes any one of the following: when the number of amplitude values ​​corresponding to the first guidance signal is greater than a preset number, the vehicle controller determines that the first guidance signal is subject to external electromagnetic interference; when the signal parameters of the first guidance signal indicate that the signal waveform of the first guidance signal is not a rectangular wave, the vehicle controller determines that the first guidance signal is subject to external electromagnetic interference.

[0055] In some embodiments, the preset number is 2.

[0056] In some embodiments, the amplitude of the first guidance signal is ±12V.

[0057] In the above technical solution, the signal waveform of the standard first guiding signal is a rectangular wave, and the number of amplitudes corresponding to the rectangular wave is 2. Therefore, this solution can determine that the first guiding signal is subject to external electromagnetic interference when the number of amplitudes corresponding to the first guiding signal is greater than a preset number (2) or when the signal parameters of the first guiding signal indicate that the signal waveform of the first guiding signal is not a rectangular wave.

[0058] In some embodiments, the vehicle includes a first switch module located on a first link between the AC charging pile and the on-board charger. Step 202 includes: when the first guidance signal is subjected to external electromagnetic interference, the vehicle controller controls the switch in the first switch module to open to disconnect the first link.

[0059] In one possible implementation, after step 202, method 200 further includes: the vehicle controller transmitting the first guidance signal to the signal receiving module in the vehicle via a third link, the third link being the link between the AC charging pile and the signal receiving module, the signal receiving module being used to receive the first guidance signal affected by external electromagnetic interference.

[0060] It should be understood that the "third link" in the above scheme refers to the communication link between the AC charging pile and the signal receiving module. This third link is used to transmit the first guidance signal affected by electromagnetic interference to the signal receiving module, so as to avoid the phenomenon that the AC charging pile is only in the output state without any device receiving the first guidance signal affected by electromagnetic interference, and to avoid the impact of lightning strikes on the AC charging pile during thunderstorms.

[0061] It should also be understood that the "signal receiving module" in the above solution has tolerance capability (the ability to receive abnormal signals). This signal receiving module is only used to receive signals, regardless of whether the signal is normal or abnormal. This signal receiving module does not have a judgment function; it is only used to receive CP signals to ensure that the AC charging pile is in the CP signal output state.

[0062] In the above technical solution, when the first guiding signal is subjected to external electromagnetic interference, the first link is disconnected; and after the second guiding signal is generated by the signal generation module in the vehicle, the solution also 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. This solution can avoid the phenomenon that the AC charging pile only outputs the first guiding signal without any device receiving it, and avoids the impact of lightning strikes on the AC charging pile during thunderstorms. This solution can improve the service life of the AC charging pile.

[0063] In some embodiments, the vehicle includes a third switch module, which is located on a third link between the AC charging pile and the signal receiving module. Step 203 includes: the vehicle controller controls the switch in the third switch module to close, and transmits the first guidance signal to the signal receiving module through the third link formed by the closure of the switch in the third switch module.

[0064] Figure 4 This is a schematic diagram of another vehicle AC charging process provided in an embodiment of this application.

[0065] For example, such as Figure 4 As shown, the vehicle includes a signal generation module, an on-board charger, a first switch module, a second switch module, a third switch module, and a signal receiving module. When the vehicle is in an AC charging scenario, the AC charging pile transmits the AC charging signal to the on-board charger via a target link and transmits a first guidance signal to the on-board charger via a first link. The on-board charger converts the AC charging signal into a DC charging signal based on the indication function of the first guidance signal to charge the vehicle's battery. When the first guidance signal is affected by external electromagnetic interference, it loses its indicative function (the first guidance signal cannot instruct the on-board charger to convert the AC charging signal into a DC charging signal to charge the vehicle's battery), and the AC charging process is interrupted. At this time, the vehicle controller controls the switch in the first switch module to open, i.e., disconnect. Figure 4 The first link in the system ensures that the first guidance signal, susceptible to external electromagnetic interference, will not be transmitted to the on-board charger. The vehicle controller generates a second guidance signal through this signal generation module and controls... Figure 4 The closing of the switch in the second switching module establishes a second link between the signal generation module and the on-board charger, transmitting the second guide signal to the on-board charger. This allows the on-board charger to convert the AC charging signal into a DC charging signal to charge the vehicle battery, thus maintaining the charging process. Furthermore, the vehicle controller controls the closing of the switch in the third switching module, establishing a third link between the AC charging pile and the signal receiving module, enabling the AC charging pile to transmit the first guide signal to the signal receiving module through this third link. This solution avoids the first guide signal not being received and prevents lightning strikes from damaging the AC charging pile during thunderstorms, thereby extending the lifespan of the AC charging pile.

[0066] In some embodiments, the method 200 further includes: when the first guidance signal is subjected to external electromagnetic interference and the first signal tolerance corresponding to the first guidance signal is greater than a preset signal tolerance, the vehicle controller performs the step of disconnecting the first link and generating a second guidance signal through the signal generation module in the vehicle, wherein the preset signal tolerance is used to indicate the allowable deviation between the received guidance signal and the preset guidance signal.

[0067] It should be understood that the above solution refers to receiving a first guidance signal through a first link between the vehicle's onboard charger and the AC charging pile when the vehicle is in an AC charging scenario; when the first guidance signal is affected by external electromagnetic interference and the first signal tolerance corresponding to the first guidance signal is greater than a preset signal tolerance, the first link is disconnected, and a second guidance signal is generated through the signal generation module in the vehicle, and transmitted to the onboard charger through the second link to instruct the onboard charger to convert the received AC charging signal into a DC charging signal to charge the vehicle battery.

[0068] It should also be understood that the "first signal tolerance corresponding to the first guidance signal" in the above scheme can specifically be understood as: the deviation between the first guidance signal received by the on-board charger and the preset guidance signal. The "preset signal tolerance" in the above scheme is used to indicate the allowable deviation between the received guidance signal and the preset guidance signal. This deviation includes deviations in signal amplitude, signal duty cycle, signal frequency, and signal peak value. The signal duty cycle refers to the proportion of time the guidance signal is at a high level within one signal cycle without distortion.

[0069] In the above technical solution, under normal circumstances, even when the first guidance signal is subject to minor external electromagnetic interference, the on-board charger will still consider it unaffected and instruct it to convert the received AC charging signal into a DC charging signal to charge the vehicle battery. Therefore, this solution only generates the second guidance signal when the first guidance signal is subject to external electromagnetic interference and the corresponding first signal tolerance is greater than a preset signal tolerance—that is, when the first guidance signal is subject to significant external electromagnetic interference. This process avoids excessive energy consumption by the vehicle.

[0070] Step 203: The vehicle controller transmits the second guidance signal to the on-board charger through the second link between the signal generation module and the on-board charger.

[0071] It should be understood that the "second link" in step 203 refers to the communication link between the signal generation module and the vehicle charger. The second link is used to transmit the second guidance signal to the vehicle charger so that when the first guidance signal is affected by external electromagnetic interference, the second guidance signal replaces the indication function of the first guidance signal, instructing the vehicle charger to convert the acquired AC charging signal into a DC charging signal to charge the vehicle battery.

[0072] In some embodiments, the vehicle includes a second switch module located on a second link between the signal generation module and the on-board charger. Step 203 includes: the vehicle controller controlling the switch in the second switch module to close, and transmitting the second guidance signal to the on-board charger through the second link formed by the closure of the switch in the second switch module.

[0073] In some embodiments, after step 203, the method 200 further includes: the vehicle controller detecting the signal quality of the first guidance signal received by the signal receiving module; if the signal quality is within the normal range, the vehicle controller reconnecting the disconnected first link; and the vehicle controller disconnecting the second link and the third link.

[0074] It should be understood that the guidance signal is a rectangular wave signal with fixed target signal parameters such as amplitude, duty cycle, frequency, and peak value. The vehicle controller can use these target signal parameters to measure the signal quality of the first guidance signal. Specifically, when the deviation between the signal parameters corresponding to the first guidance signal and the target signal parameters is within a preset range, the vehicle controller determines that the signal quality of the first guidance signal is within the normal range; otherwise, the signal quality of the first guidance signal is within the abnormal range.

[0075] The above technical solution describes a scenario where, under the condition that the signal quality of the first guidance signal received by the signal receiving module is within a normal range—that is, when the first guidance signal is no longer subject to external electromagnetic interference—the vehicle controller reconnects the first link and disconnects the second and third links. The second guidance signal is no longer generated by the signal generation module and transmitted to the on-board charger via the second link. This solution not only reduces the vehicle's energy consumption but also ensures that the on-board charger receives a guidance signal free from external electromagnetic interference, allowing it to continue charging.

[0076] It should be understood that the first guidance signal may also be deformed by other influences. In some embodiments, the first guidance signal may deform when the AC charging station malfunctions.

[0077] In some embodiments, the method for determining that the first guidance signal has been deformed due to an AC charging pile fault includes: the vehicle controller comparing the signal parameter corresponding to the first guidance signal with the target signal parameter; if the signal parameter is different from the target signal parameter, the vehicle controller determines that the first guidance signal has been deformed due to an AC charging pile fault.

[0078] In some embodiments, after step 203, the method 200 further includes at least one of the following: the vehicle controller sends a first reminder message to a target terminal, the first reminder message being used to remind the vehicle that the AC charging process is affected by external electromagnetic interference, the target terminal being a terminal with control authority over the vehicle; the vehicle controller displays the first reminder message on the vehicle's main display screen; the vehicle controller controls the vehicle's steering wheel to vibrate based on the first reminder message; the vehicle controller controls the vehicle's seat to vibrate based on the first reminder message.

[0079] In the above technical solution, the vehicle controller sends a first reminder message to the target terminal, enabling the target object on the target terminal to view the first reminder message, thereby reminding the vehicle's AC charging process of being affected by external electromagnetic interference. Alternatively, the vehicle controller can remind the vehicle's AC charging process of being affected by external electromagnetic interference by controlling the display of the first reminder message on vehicle components or by controlling the vibration of vehicle components based on the first reminder message.

[0080] It should be understood that method 200 involves a signal generation module in the vehicle generating a second guidance signal to replace the first guidance signal when the first guidance signal is affected by external electromagnetic interference. This second guidance signal is used to instruct the on-board charger to convert the acquired AC charging signal into a DC charging signal to charge the on-board battery. This application also proposes another method parallel to method 200, as follows.

[0081] In some embodiments, when the vehicle is in an AC charging scenario, the vehicle controller receives a first guidance signal through a first link between the on-board charger and the AC charging pile. The guidance signal is used to instruct the on-board charger to convert the acquired AC charging signal into a DC charging signal to charge the vehicle battery. When the first guidance signal is affected by external electromagnetic interference, the vehicle controller adjusts the preset signal tolerance corresponding to the on-board charger to a second signal tolerance. The second signal tolerance is greater than the preset signal tolerance. The preset signal tolerance is used to indicate the deviation between the received guidance signal allowed by the on-board charger and the preset guidance signal.

[0082] In the above technical solution, when the first guidance signal is affected by external electromagnetic interference, the vehicle controller increases the preset signal tolerance corresponding to the on-board charger. In other words, it adjusts the on-board charger's tolerance to the guidance signal, ensuring that the first guidance signal, despite external electromagnetic interference, can still instruct the on-board charger to convert the acquired AC charging signal into a DC charging signal to charge the vehicle battery. This method eliminates the need for a signal generation module in the vehicle to generate a second guidance signal and eliminates the need for a switching module, thus controlling the vehicle's AC charging uninterrupted at a lower cost.

[0083] Figure 5 This is a schematic diagram of the structure of a device for eliminating electromagnetic interference provided in an embodiment of this application.

[0084] For example, such as Figure 5 As shown, the device 500 is installed in a vehicle, and the device 500 includes:

[0085] The receiving module 501 is used to receive a first guidance signal through a first link between the vehicle charger and the AC charging pile when the vehicle is in an AC charging scenario. The guidance signal is used to instruct the vehicle charger to convert the acquired AC charging signal into a DC charging signal to charge the vehicle battery.

[0086] Processing module 502 is used to disconnect the first link when the first guidance signal is subjected to external electromagnetic interference, and generate a second guidance signal through the signal generation module in the vehicle, which is not subject to external electromagnetic interference.

[0087] The transmission module 503 is used to transmit the second guidance signal to the vehicle charger through the second link between the signal generation module and the vehicle charger.

[0088] Optionally, if the first guidance signal is subjected to external electromagnetic interference, the first link is disconnected; and after the second guidance signal is generated by the signal generation module in the vehicle, the transmission module 503 is further used to transmit the first guidance signal to the signal receiving module in the vehicle through a third link, the third link being the link between the AC charging pile and the signal receiving module, the signal receiving module being used to receive the first guidance signal subjected to external electromagnetic interference.

[0089] Optionally, the device 500 further includes a determination module, configured to: determine that the first guidance signal is subject to external electromagnetic interference when the number of amplitude values ​​corresponding to the first guidance signal is greater than a preset number; or determine that the first guidance signal is subject to external electromagnetic interference when the signal parameters of the first guidance signal indicate that the signal waveform of the first guidance signal is not a rectangular wave.

[0090] Optionally, the processing module is further configured to, when the first guidance signal is subjected to external electromagnetic interference and the first signal tolerance corresponding to the first guidance signal is greater than a preset signal tolerance, perform the steps of disconnecting the first link and generating a second guidance signal through the signal generation module in the vehicle, wherein the preset signal tolerance is used to indicate the allowable deviation between the received guidance signal and the preset guidance signal.

[0091] Figure 6 This is a schematic diagram of another system for eliminating electromagnetic interference provided in an embodiment of this application.

[0092] For example, such as Figure 6 As shown, the system 600 includes:

[0093] The signal generation module 601, the first switch module 602, the second switch module 603, the on-board charger 604, and the control module 605 are included.

[0094] When the vehicle is in an AC charging scenario, the control module 605 controls the on-board charger 604 to establish a connection with the AC charging pile through the first switch module 602. The on-board charger 604 is used to receive a first guidance signal through the connection relationship between the AC charging pile and the on-board charger 604. The guidance signal is used to instruct the on-board charger 604 to convert the acquired AC charging signal into a DC charging signal to charge the vehicle battery.

[0095] When the first guidance signal meets the preset conditions, the control module 605 controls the vehicle charger 604 to disconnect from the AC charging pile through the first switch module 602, and controls the signal generation module 601 to connect to the vehicle charger 604 through the second switch module 603. The signal generation module 601 is used to generate the second guidance signal and transmit the second guidance signal to the vehicle charger 604. The signal generation module 601 is not subject to external electromagnetic interference. The preset condition is that the first guidance signal is subject to external electromagnetic interference.

[0096] It should be understood that the "vehicle" in the above scheme is implemented in the same way as the "vehicle" in step 201 of method 200, both being electric vehicles or hybrid vehicles. Furthermore, for the understanding of the "first guidance signal" and "signal generation module" in the above scheme, please refer to the specific descriptions of the "first guidance signal" in step 201 and the "signal generation module" in step 202, respectively, which will not be repeated here.

[0097] In some embodiments, the system 600 further includes a third switch module 606 and a signal receiving module 607;

[0098] When the first guidance signal meets the preset conditions, 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. The signal receiving module 607 is used to receive the first guidance signal affected by external electromagnetic interference through the connection relationship between the third switch module and the AC charging pile.

[0099] It should be understood that the understanding of the "signal receiving module" in the above scheme is the same as that in method 200. It will not be repeated here.

[0100] The above technical solution also includes a third switch module and a signal receiving module. When the first guidance signal is affected by external electromagnetic interference, the first link is disconnected; and after the second guidance signal is generated by the signal generation module in the vehicle, the system also transmits the first guidance signal affected by external electromagnetic interference to the signal receiving module through the third switch module. This avoids the phenomenon where the AC charging pile only outputs the first guidance signal without any device receiving it, and prevents lightning strikes from impacting the AC charging pile during thunderstorms. This solution can improve the service life of the AC charging pile.

[0101] In some embodiments, the system 600 further includes a detection module 608;

[0102] The control module 605 controls the detection module 608 to connect to the AC charging pile, and determines that the first guidance signal is subject to external electromagnetic interference when the number of amplitude values ​​corresponding to the first guidance signal is greater than a preset number; or, the detection module 608 determines that the first guidance signal is subject to external electromagnetic interference when the signal parameters of the first guidance signal indicate that the signal waveform of the first guidance signal is not a rectangular wave.

[0103] In some embodiments, the preset number is 2.

[0104] In some embodiments, the amplitude of the first guidance signal is ±12V.

[0105] In the above technical solution, the standard first guiding signal has a square wave waveform, and the number of amplitude values ​​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 amplitude values ​​corresponding to the first guiding signal is greater than a preset number (2) or when the signal parameters of the first guiding signal indicate that the waveform of the first guiding signal is not a square wave.

[0106] In some embodiments, the preset condition may also be that the first guidance signal is subject to external electromagnetic interference and the first signal tolerance corresponding to the first guidance signal is greater than the preset signal tolerance, wherein the preset signal tolerance is used to indicate the allowable deviation between the received guidance signal and the preset guidance signal.

[0107] In the above technical solution, when the vehicle is in an AC charging scenario, a first guidance signal is received through a first link between the vehicle's onboard charger and the AC charging pile. If the first guidance signal is subject to external electromagnetic interference and the corresponding first signal tolerance is greater than a preset signal tolerance, the first link is disconnected, and a second guidance signal is generated by the vehicle's signal generation module. This second guidance signal is then transmitted to the onboard charger via a second link. In some embodiments, even when the first guidance signal is subject to minor external electromagnetic interference, the onboard charger will still consider it unaffected and will still convert the received AC charging signal into a DC charging signal to charge the vehicle battery. Therefore, the system can generate a second guidance signal only when the first guidance signal is subject to external electromagnetic interference and the corresponding first signal tolerance is greater than a preset signal tolerance—that is, when the first guidance signal is subject to significant external electromagnetic interference. This process can avoid excessive energy consumption by the vehicle.

[0108] Figure 7 This is a schematic diagram of another system for eliminating electromagnetic interference provided in an embodiment of this application.

[0109] The system 600 includes a signal generation module 601, a first switch module 602, a second switch module 603, an on-board charger 604, and a control module 605;

[0110] When the vehicle is in an AC charging scenario, the control module 605 controls the on-board charger 604 to establish a connection with the AC charging pile through the first switch module 602. The on-board charger 604 is used to receive a first guidance signal through the connection relationship between the AC charging pile and the on-board charger 604. The guidance signal is used to instruct the on-board charger 604 to convert the acquired AC charging signal into a DC charging signal to charge the vehicle battery.

[0111] When the first guidance signal meets the preset conditions, the control module 605 controls the vehicle charger 604 to disconnect from the AC charging pile through the first switch module 602, and controls the signal generation module 601 to connect to the vehicle charger 604 through the second switch module 603. The signal generation module 601 is used to generate the second guidance signal and transmit the second guidance signal to the vehicle charger 604. The signal generation module 601 is not subject to external electromagnetic interference. The preset condition is that the first guidance signal is subject to external electromagnetic interference.

[0112] The system 600 also includes a third switch module 606 and a signal receiving module 607;

[0113] When the first guidance signal meets the preset conditions, 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. The signal receiving module 607 is used to receive the first guidance signal affected by external electromagnetic interference through the connection relationship between the third switch module and the AC charging pile.

[0114] Figure 8 This is a schematic diagram of another system for eliminating electromagnetic interference provided in an embodiment of this application.

[0115] The system 600 includes a signal generation module 601, a first switch module 602, a second switch module 603, an on-board charger 604, and a control module 605;

[0116] When the vehicle is in an AC charging scenario, the control module 605 controls the on-board charger 604 to establish a connection with the AC charging pile through the first switch module 602. The on-board charger 604 is used to receive a first guidance signal through the connection relationship between the AC charging pile and the on-board charger 604. The guidance signal is used to instruct the on-board charger 604 to convert the acquired AC charging signal into a DC charging signal to charge the vehicle battery.

[0117] When the first guidance signal meets the preset conditions, the control module 605 controls the vehicle charger 604 to disconnect from the AC charging pile through the first switch module 602, and controls the signal generation module 601 to connect to the vehicle charger 604 through the second switch module 603. The signal generation module 601 is used to generate the second guidance signal and transmit the second guidance signal to the vehicle charger 604. The signal generation module 601 is not subject to external electromagnetic interference. The preset condition is that the first guidance signal is subject to external electromagnetic interference.

[0118] The system 600 also includes a third switch module 606, a signal receiving module 607, and a detection module 608. The control module 605 controls the detection module 608 to connect to the AC charging pile.

[0119] When the first guidance signal meets the preset conditions, 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. The signal receiving module 607 is used to receive the first guidance signal affected by external electromagnetic interference through the connection relationship between the third switch module and the AC charging pile.

[0120] The control module 605 determines that the first guide signal is subject to external electromagnetic interference when the number of amplitude values ​​corresponding to the first guide signal is greater than a preset number, or, when the signal parameters of the first guide signal indicate that the signal waveform of the first guide signal is not a rectangular wave, the control module 605 determines that the first guide signal is subject to external electromagnetic interference.

[0121] In some embodiments, when the signal quality of the first guidance signal received by the signal receiving module is detected to be within the normal range, the control module 605 controls the AC charging pile to re-establish the connection with the vehicle charger, the vehicle charger disconnects from the signal generating module through the second switch module, and the signal receiving module disconnects from the AC charging pile through the third switch module.

[0122] The above technical solution describes the connection between multiple modules in the system when the signal quality of the first guidance signal received by the signal receiving module is within a normal range, that is, when the first guidance signal is no longer subject to external electromagnetic interference. This solution not only reduces the vehicle's energy consumption but also allows the on-board charger to receive a guidance signal free from external electromagnetic interference, enabling it to continue charging.

[0123] Figure 9 This is a schematic diagram of the structure of a vehicle provided in an embodiment of this application.

[0124] For example, such as Figure 9 As shown, 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 when the processor 902 executes the computer program 903, the vehicle can perform any of the methods for eliminating electromagnetic interference described above.

[0125] This embodiment can divide the vehicle into functional modules according to the above method example. For example, each function can be assigned to a separate module, or two or more functions can be integrated into one processing module. The integrated module can be implemented in hardware. It should be noted that the module division in this embodiment is illustrative and only represents one logical functional division. In actual implementation, there may be other division methods.

[0126] When each functional module is divided according to its corresponding function, the vehicle may include: a receiving module, a processing module, a determining module, and a transmitting module, etc. It should be noted that all relevant content of each step involved in the above method embodiments can be referenced from the functional descriptions of the corresponding functional modules, and will not be repeated here.

[0127] The vehicle provided in this embodiment is used to perform the above-described method for eliminating electromagnetic interference, and thus can achieve the same effect as the above-described implementation method.

[0128] When using integrated units, the vehicle may include a processing module and a storage module. The processing module is used to control and manage the vehicle's actions. The storage module is used for the vehicle to execute program code and store data.

[0129] The processing module may be a processor or a controller, which can implement or execute various exemplary logic blocks, modules, and circuits as disclosed in this application. The processor may also be a combination of computing functions, such as a combination of one or more microprocessors, a combination of digital signal processing (DSP) and microprocessors, etc., and the storage module may be a memory.

[0130] This embodiment provides a computer-readable storage medium storing instructions that, when executed on a computer or processor, cause the computer or processor to perform any of the methods for eliminating electromagnetic interference described above.

[0131] This embodiment also provides a computer program product containing instructions. When the computer program product is run on a computer or processor, it causes the computer or processor to perform the aforementioned related steps to achieve any of the methods for eliminating electromagnetic interference described above.

[0132] In this embodiment, the vehicle, computer-readable storage medium, computer program product containing instructions, or chip are all used to execute the corresponding methods provided above. Therefore, the beneficial effects that can be achieved can be referred to the beneficial effects in the corresponding methods provided above, and will not be repeated here.

[0133] Through the above description of the embodiments, those skilled in the art will understand that, for the sake of convenience and brevity, only the division of the above functional modules is used as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0134] In the embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another device, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0135] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A method for eliminating electromagnetic interference, characterized in that, The method includes: When the vehicle is in an AC charging scenario, a first guidance signal is received through the first link between the on-board charger and the AC charging pile. The guidance signal is used to instruct the on-board charger to convert the acquired AC charging signal into a DC charging signal to charge the on-board battery. When the first guidance signal is subjected to external electromagnetic interference, the first link is disconnected, and a second guidance signal is generated through the signal generation module in the vehicle, which is not subject to external electromagnetic interference. The second guidance signal is transmitted to the vehicle charger via a second link between the signal generation module and the vehicle charger.

2. The method according to claim 1, characterized in that, After disconnecting the first link and generating a second guidance signal via the signal generation module in the vehicle when the first guidance signal is subjected to external electromagnetic interference, the method further includes: The first guidance signal is transmitted to the signal receiving module in the vehicle via a third link, wherein the third link is the link between the AC charging pile and the signal receiving module, and the signal receiving module is used to receive the first guidance signal affected by external electromagnetic interference.

3. The method according to claim 1, characterized in that, The method for determining that the first guidance signal is subject to external electromagnetic interference includes any one of the following: If the number of amplitude values ​​corresponding to the first guidance signal is greater than a preset number, it is determined that the first guidance signal is subject to external electromagnetic interference. If the signal parameters of the first guidance signal indicate that the waveform of the first guidance signal is not a rectangular wave, it is determined that the first guidance signal is subject to external electromagnetic interference.

4. The method according to claim 1, characterized in that, The method further includes: When the first guidance signal is subjected to external electromagnetic interference and the first signal tolerance corresponding to the first guidance signal is greater than the preset signal tolerance, the step of disconnecting the first link and generating a second guidance signal through the signal generation module in the vehicle is executed. The preset signal tolerance is used to indicate the allowable deviation between the received guidance signal and the preset guidance signal.

5. A system for eliminating electromagnetic interference, characterized in that, The system includes 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 AC charging scenario, the control module controls the on-board charger to establish a connection with the AC charging pile through the first switch module. The on-board charger is used to receive a first guidance signal through the connection relationship between the AC charging pile and the on-board charger. The guidance signal is used to instruct the on-board charger to convert the acquired AC charging signal into a DC charging signal to charge the vehicle battery. When the first guidance signal meets the preset conditions, the control module controls the vehicle charger to disconnect from the AC charging pile through the first switch module, and controls the signal generation module to connect to the vehicle charger through the second switch module. The signal generation module is used to generate a second guidance signal and transmit the second guidance signal to the vehicle charger. The signal generation module is not subject to external electromagnetic interference. The preset condition is that the first guidance signal is subject to external electromagnetic interference.

6. The system according to claim 5, characterized in that, The system also includes a third switch module and a signal receiving module; When the first guidance signal meets the preset conditions, the control module controls the signal receiving module to establish a connection with the AC charging pile through the third switch module. The signal receiving module is used to receive the first guidance signal affected by external electromagnetic interference through the connection relationship between the third switch module and the AC charging pile.

7. The system according to claim 5, characterized in that, The system also includes a detection module; The control module controls the detection module to connect with the AC charging pile, and determines that the first guidance signal is subject to external electromagnetic interference when the number of amplitude values ​​corresponding to the first guidance signal is greater than a preset number; or, determines that the first guidance signal is subject to external electromagnetic interference when the signal parameters of the first guidance signal indicate that the signal waveform of the first guidance signal is not a rectangular wave.

8. The system according to any one of claims 5 to 7, characterized in that, The preset condition may also be that the first guidance signal is subject to external electromagnetic interference and the first signal tolerance corresponding to the first guidance signal is greater than the preset signal tolerance. The preset signal tolerance is used to indicate the allowable deviation between the received guidance signal and the preset guidance signal.

9. A vehicle, characterized in that, This includes the system for eliminating electromagnetic interference as described in any one of claims 5 to 8.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores instructions that, when executed on a computer or processor, cause the computer or processor to perform the method for eliminating electromagnetic interference as described in any one of claims 1 to 4.

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