Signal fault processing method, medium and vehicle

Abstract

The embodiment of the application discloses a signal fault processing method, medium and vehicle, relates to the technical field of vehicle control, and the method comprises the following steps: determining the signal state of a control guide signal of a vehicle based on the first electric parameter of the control guide signal; in the case that the signal state represents that the control guide signal has a fault, determining the actual connection state of a charging gun and the vehicle based on at least one vehicle state parameter associated with the physical connection state of the charging gun; and in the case that the actual connection state represents that the charging gun is not connected to the vehicle, continuing to execute the current running function of the vehicle. The technical scheme of the embodiment of the application can continue to execute the current running function in the case that the charging gun is not connected, effectively avoids the false limitation of the vehicle function in the non-charging scene, and guarantees the normal vehicle experience of the user in the non-charging scene.

Description

Technical Field

[0001] This application relates to the field of vehicle control technology, specifically to a signal fault handling method, medium, and vehicle. Background Technology

[0002] When new energy vehicles are AC charged, the CP (Control Pilot) signal line is a crucial control pilot signal line in the charging interface. In related technologies, to prevent electrical safety accidents, after the vehicle is powered on, the On-Board Control (OBC) system continuously performs fault self-detection on the CP signal. Once an abnormality in the electrical parameters of the CP signal is detected, a CP signal fault is determined, and the operating vehicle functions are restricted to ensure vehicle safety.

[0003] However, this method of judging solely by the electrical parameters of the CP signal has certain limitations. In practical applications, interference with the CP signal or abnormalities in the sampling circuit can lead to deviations in the collected electrical parameters, resulting in misjudgments of the CP signal's state, limiting vehicle functionality, and causing inconvenience to users. Summary of the Invention

[0004] In view of this, the embodiments of this application are committed to providing a signal fault handling method, medium and vehicle, so as to effectively avoid the erroneous limitation of vehicle functions in non-charging scenarios and ensure the normal vehicle use experience of users in non-charging scenarios.

[0005] In a first aspect, one embodiment of this application provides a signal fault handling method, comprising: determining the signal state of the control guidance signal based on a first electrical parameter of the vehicle's control guidance signal; when the signal state indicates that the control guidance signal has failed, determining the actual connection state between the charging gun and the vehicle based on at least one vehicle state parameter associated with the physical connection state of the charging gun; and when the actual connection state indicates that the charging gun is not connected to the vehicle, continuing to execute the vehicle's current operating functions.

[0006] In this embodiment, when the signal status of the control guidance signal is initially determined to be faulty, the vehicle's current operating functions are not directly restricted in the traditional way. Instead, the vehicle status parameters are used to further confirm whether the charging gun is actually connected. If the actual connection status shows that the charging gun is not connected to the vehicle, it indicates that the vehicle is currently in a non-charging scenario. The signal fault may be a misjudgment caused by abnormality or interference in the signal sampling circuit under non-charging conditions, and will not have a substantial impact on the vehicle's operational safety in this scenario. Therefore, by continuing to execute the current operating functions even when the charging gun is not connected, the erroneous restriction of vehicle functions in non-charging scenarios is effectively avoided, ensuring the user's normal driving experience in non-charging scenarios.

[0007] In conjunction with the first aspect, in certain implementations of the first aspect, determining the actual connection state between the charging gun and the vehicle based on at least one vehicle state parameter associated with the physical connection state of the charging gun includes: determining a second electrical parameter of the connection confirmation signal line; determining the signal line connection state of the connection confirmation signal line based on the second electrical parameter; determining the actual connection state indicating that the charging gun is connected to the vehicle when the signal line connection state is a connected state or a half-connected state; and determining the actual connection state indicating that the charging gun is not connected to the vehicle when the signal line connection state is a disconnected state.

[0008] This application embodiment directly utilizes the connection status of the existing connection confirmation signal line in the system for physical connection confirmation as the basis for judgment. Since the change of electrical parameters of the connection confirmation signal line is related to the degree of physical contact between the charging gun plug and the vehicle charging interface, the connection status it reflects has high authenticity and can effectively and accurately distinguish different connection states such as charging gun not connected, half connected, and connected. Moreover, without the need to add additional hardware sensors or complex detection circuits, it can achieve accurate judgment of the actual connection status on the basis of the existing hardware architecture, effectively reducing the cost of status determination.

[0009] In conjunction with the first aspect, in some implementations of the first aspect, determining the signal line connection state of the connection confirmation signal line based on the second electrical parameter includes: matching the second electrical parameter with a continuous threshold interval corresponding to different connection states, and determining the signal line connection state based on the matching result; wherein, the continuous threshold interval corresponding to any connection state is determined according to the electrical characteristics of the charging gun.

[0010] This application embodiment determines a continuous threshold range based on the electrical characteristics of the charging gun, ensuring that the continuous threshold range can meet the connection status determination requirements of charging guns with different electrical characteristics, thereby improving the compatibility of charging guns. Simultaneously, by setting a continuous threshold range, misjudgment problems caused by a single threshold point are effectively avoided, enhancing the anti-interference capability and stability of signal line connection status determination.

[0011] In conjunction with the first aspect, in some implementations of the first aspect, determining the actual connection state between the charging gun and the vehicle based on at least one vehicle state parameter associated with the physical connection state of the charging gun includes: determining the current speed of the vehicle; comparing the current speed with a target speed threshold to obtain a comparison result; and determining the actual connection state between the charging gun and the vehicle based on the comparison result.

[0012] This application embodiment uses vehicle speed as an auxiliary criterion to indirectly reflect the physical connection possibility of the charging gun. This method is fast and does not require complex calculations. It can quickly eliminate the possibility of charging gun connection when the vehicle is in motion, further improving the efficiency and accuracy of actual connection status determination.

[0013] In conjunction with the first aspect, some implementations of the first aspect further include: determining the power supply status of the vehicle based on the vehicle's power supply parameters; wherein determining the signal status of the control guidance signal based on the first electrical parameter of the vehicle's control guidance signal includes: determining the signal status of the control guidance signal as a fault state when the power supply status is normal and the first electrical parameter is within the fault parameter range.

[0014] This application embodiment adds a check on the power supply status, ensuring that the fault diagnosis of the control guidance signal itself is performed under normal power supply conditions. This avoids misjudging normal signal measurement deviations as signal faults due to fluctuations in the vehicle's own power supply, reduces the false alarm rate, and improves the reliability of the entire fault diagnosis result.

[0015] In conjunction with the first aspect, some implementations of the first aspect also include: when the actual connection status indicates that the charging gun is not connected to the vehicle, prompting the user to perform line maintenance according to the first-level fault warning method; when the actual connection status indicates that the charging gun is connected to the vehicle, prompting the user to perform line maintenance according to the second-level fault warning method; wherein the severity of the fault reflected by the first-level fault warning method is lower than the severity of the fault reflected by the second-level fault warning method.

[0016] This application embodiment can flexibly adjust the warning method according to different actual connection states. When the charging gun is not connected to the vehicle, a lower level of warning is used, which not only alerts the user to the potential abnormality of the system, but also minimizes interference with the current operation and ensures driving convenience. When the charging gun is connected to the vehicle, a higher level of warning is used to show the user that the current abnormality is of a higher degree of fault and needs to be repaired as soon as possible. This allows the user to intuitively and clearly understand the severity of the fault and avoid safety risks caused by ignoring the fault.

[0017] In conjunction with the first aspect, in some implementations of the first aspect, after prompting the user to perform line maintenance according to the second-level fault warning method, it also includes: continuously detecting the first electrical parameters of the control guidance signal at multiple times within the target duration; if the first electrical parameters at multiple times within the target duration are all within the recovery parameter range, then the vehicle charging process is established.

[0018] This application provides an automatic fault recovery detection and processing mechanism. By sampling and detecting the first electrical parameter of the control guide signal multiple times within a target time period, it can accurately determine whether the fault has been eliminated. After ensuring that the fault is eliminated, the charging process is automatically started, which reduces the inconvenience of requiring manual intervention to restart the charging after a temporary interference interruption and improves the availability of the charging system.

[0019] In conjunction with the first aspect, some implementations of the first aspect further include: obtaining the switching state of the mechanical contact switch within the vehicle charging interface; wherein the mechanical contact switch is physically triggered and changes state when the charging gun head is inserted into the charging interface; and determining that the actual connection state indicates that the charging gun is not connected to the vehicle when the signal line connection state is not connected, including: if the switch state indicates that the charging gun is not inserted into the charging interface and the signal line connection state is not connected, then determining that the actual connection state indicates that the charging gun is not connected to the vehicle.

[0020] This application embodiment provides dual detection and verification by adding the on / off state of the mechanical contact switch and combining it with the connection confirmation signal line for joint judgment. This improves the accuracy of the actual connection status judgment result, avoids misjudgment caused by the abnormality of a single detection method, and further enhances the reliability of the actual connection status.

[0021] Secondly, this application provides a signal fault processing device, comprising: a first state determination module, configured to determine the signal state of the control guidance signal based on a first electrical parameter of the vehicle's control guidance signal; a second state determination module, configured to determine the actual connection state between the charging gun and the vehicle based on at least one vehicle state parameter associated with the physical connection state of the charging gun when the signal state indicates that the control guidance signal has failed; and a function execution module, configured to continue executing the vehicle's current operating function when the actual connection state indicates that the charging gun is not connected to the vehicle.

[0022] Thirdly, one embodiment of this application provides a computer-readable storage medium storing a computer program for performing the method in the first aspect or any possible implementation of the first aspect.

[0023] Fourthly, one embodiment of this application provides a vehicle, the vehicle comprising: a processor; a memory for storing processor-executable instructions; the processor being configured to execute the method in the first aspect or any possible implementation thereof.

[0024] Fifthly, one embodiment of this application provides a computer program product including instructions that, when executed on a vehicle, cause the vehicle to implement the method in the first aspect or any possible implementation of the first aspect.

[0025] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 The diagram shown is a flowchart of a signal fault handling method provided in an embodiment of this application.

[0028] Figure 2 The diagram shown is a structural schematic of a signal fault processing device provided in an embodiment of this application.

[0029] Figure 3 The diagram shown is a structural schematic of a vehicle provided in an embodiment of this application. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0031] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0032] It should be understood that the term "and / or" used in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Furthermore, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship. Additionally, the term "based on" used in this document is not limited to relying solely on one object. For example, determining B based on A can mean: determining B based solely on A, or determining B partially based on A.

[0033] It should be noted that the collection, gathering, updating, analysis, processing, use, transmission, and storage of user personal information involved in the technical solution of this application all comply with the provisions of relevant laws and regulations, are used for legitimate purposes, and do not violate public order and good morals. Necessary measures are taken to prevent unauthorized access to user personal information data and to safeguard user personal information security and network security.

[0034] In the field of AC charging technology for new energy vehicles, in order to ensure that the charging process can be started immediately when the user plugs in the charging gun at any time, the OBC needs to continuously or periodically monitor relevant signals.

[0035] In related technologies, after the vehicle is detected to be powered on, the electrical parameters of the CP signal are continuously monitored. That is, regardless of whether the vehicle is charging or not, as long as the OBC is in working condition, the CP signal will be continuously sampled and analyzed. When the electrical parameters deviate from the normal range, it is determined that the CP signal is faulty and the corresponding fault handling mechanism is triggered.

[0036] However, in scenarios where the vehicle is driving normally or parked (without a charging gun connected), if the CP signal sampling circuit itself malfunctions, the charging pile ages, or is subject to external interference, the electrical parameters of the collected CP signal may fluctuate abnormally. If this is directly interpreted as a CP signal fault and vehicle functions are restricted (such as power output limitation or disabling of some auxiliary functions), it will cause unnecessary inconvenience to the user. For example, if a user is driving and a false CP signal fault is reported due to occasional interference in the sampling circuit, the vehicle may suddenly enter emergency mode, limiting power output. This not only affects the driving experience but may also pose a traffic safety hazard.

[0037] To address the aforementioned technical issues, the signal fault handling method provided in this application, after the CP signal status is initially determined to be faulty, introduces vehicle status parameters associated with the physical connection status of the charging gun for secondary verification to determine whether the charging gun is truly in a connected state, thereby avoiding erroneous functional limitations in non-charging scenarios.

[0038] The following is combined Figure 1 The signal fault handling method provided in the embodiments of this application will be described in detail.

[0039] Figure 1 The diagram shown is a schematic flowchart of a signal fault handling method provided in an embodiment of this application; as follows: Figure 1 As shown, the method includes the following steps.

[0040] Step S110: Determine the signal state of the control guidance signal based on the first electrical parameters of the vehicle's control guidance signal.

[0041] In this context, the control guidance signal refers to any electrical signal used for communication negotiation between the charging station and the vehicle to control the charging process. The first electrical parameter can be a parameter reflecting the signal characteristics, such as the voltage, current, duty cycle, or frequency value of the control guidance signal. The signal status refers to the current operating condition characterized by the first electrical parameter of the control guidance signal. For example, the signal status may be normal or faulty.

[0042] In specific implementation, the specific methods for determining the signal status include: pre-setting the normal parameter range and fault parameter range of the first electrical parameter; when the collected first electrical parameter is within the fault parameter range, the signal status of the control guide signal is determined to be faulty; when the first electrical parameter is within the normal parameter range, the signal status is determined to be normal.

[0043] For example, in AC charging scenarios, the normal voltage range of the CP signal typically falls within a specific interval, such as a first interval greater than 1.27V and less than 3.7V, and a second interval greater than 14.3V. If the detected voltage amplitude of the CP signal is greater than 1.27V and less than 3.7V, or greater than 14.3V, it can be preliminarily determined that the CP signal is faulty, and the signal status is faulty. It should be noted that the normal parameter range and fault parameter range of the first electrical parameter may differ under different vehicle models or charging standards, and can be customized according to the electrical design parameters of the actual vehicle model.

[0044] Step S120: In the event of a fault in the signal state characterization control guidance signal, the actual connection state between the charging gun and the vehicle is determined based on at least one vehicle state parameter associated with the physical connection state of the charging gun.

[0045] The physical connection status refers to the mechanical fit and electrical conductivity between the charging gun plug and the vehicle's charging interface, including three states: connected, partially connected (e.g., the plug is not fully inserted), and not connected. Vehicle status parameters refer to any parameters that can indirectly or directly reflect the physical connection status between the charging gun and the vehicle. For example, vehicle status parameters include the electrical parameters of the connection confirmation signal line and / or the vehicle's speed. The actual connection status refers to the actual physical and electrical connection between the charging gun and the vehicle. For example, the actual connection status includes a connected state, an unconnected state, or a partially connected state. A connected state indicates that the charging gun is fully inserted and an electrical connection has been established; an unconnected state indicates that the charging gun is not inserted or a valid connection has not been established; a partially connected state indicates that the charging gun is partially inserted or the connection is unstable.

[0046] In practice, when the CP signal is determined to be faulty, it is necessary to further verify whether the fault occurs in a real charging scenario or a non-charging scenario (such as while driving) by checking vehicle status parameters.

[0047] Optionally, there are several ways to verify whether the charging gun is actually connected. For example, the vehicle status parameter could be a switch signal from the charging gun locking mechanism. After the charging gun is fully inserted, the electronic or mechanical lock on the vehicle side will activate and generate a lock-in switch signal. This signal is directly triggered by the physical connection and therefore can serve as a reliable indication of the actual connection status. When this locking signal is detected as valid, it can be determined that the actual connection status indicates that the charging gun is connected; otherwise, it indicates that it is not connected.

[0048] In step S130, if the actual connection status indicates that the charging gun is not connected to the vehicle, the current operating function of the vehicle continues to be executed.

[0049] The currently operating functions refer to the functions that the vehicle is performing before the signal fault is determined. For example, the currently operating functions include power output, steering assist and air conditioning control while driving.

[0050] It's important to note that when the actual connection status indicates the charging gun is not connected, the entire charging circuit (including the charging pile, charging cable, and vehicle charging interface) does not constitute a closed electrical system. In this situation, the CP signal should be in an invalid or undefined state. The abnormal value sampled by the OBC may be due to an internal problem in its own sampling circuit, not a fault affecting the vehicle's overall functionality. Therefore, in this non-charging scenario (where the charging circuit is not closed), uniformly implementing a fault-limiting strategy upon detecting a CP signal fault can lead to misjudgments of functionality in non-charging scenarios, impacting the user experience.

[0051] In this embodiment, when the actual connection status indicates that the charging gun is not connected to the vehicle, it is determined that the CP signal failure is not due to a real connection problem during charging, but may be caused by non-critical factors such as sampling circuit interference or occasional sensor anomalies. In this case, to avoid interfering with normal vehicle use, the vehicle will maintain its current operating state. For example, a vehicle in motion will maintain its original power output, power steering, and brake assist functions; a vehicle in a parked state will allow the user to start, drive, or use other onboard electronic devices normally without triggering protective measures such as power limiting or function disabling caused by the CP signal failure.

[0052] Furthermore, when the actual connection status indicates that the charging gun is connected to the vehicle, it signifies that the vehicle is currently in a charging scenario. A CP signal fault could directly affect the safety and stability of the charging process. In this case, corresponding protective measures need to be implemented according to the preset fault handling mechanism. For example, the power supply to the charging circuit should be immediately cut off to prevent damage to the charging system from abnormal conditions such as overcurrent or overvoltage. Simultaneously, clear fault warning messages should be issued to the user through the vehicle's instrument panel, central control screen, or indicator lights, prompting the user to check whether the charging gun connection is secure, whether the charging cable is damaged, and whether the charging pile is working properly, so that the user can promptly troubleshoot and resolve the problem, ensuring a safe and reliable charging process.

[0053] For example, suppose that while the vehicle is in motion, a voltage amplitude of 0.5V is detected in the CP signal. This voltage amplitude is within the preset fault parameter range, and the CP signal is initially determined to be in a fault state. At this time, vehicle status parameters associated with the physical connection status of the charging gun are immediately acquired, such as the switch signal of the charging gun locking mechanism. Upon detection, this switch signal is in an "off" state, indicating that the charging gun is not connected to the vehicle. Since the actual connection status is not connected, the vehicle will continue to perform its current operating functions during driving, including maintaining the original power output, power steering, and air conditioning system operation, and will not trigger power limiting or enter emergency mode due to the abnormal CP signal, thereby ensuring the user's normal driving experience and driving safety.

[0054] In this embodiment, when the signal status of the control guidance signal is initially determined to be faulty, the vehicle's current operating functions are not directly restricted in the traditional way. Instead, the vehicle status parameters are used to further confirm whether the charging gun is actually connected. If the actual connection status shows that the charging gun is not connected to the vehicle, it indicates that the vehicle is currently in a non-charging scenario. The signal fault may be a misjudgment caused by abnormality or interference in the signal sampling circuit under non-charging conditions, and will not have a substantial impact on the vehicle's operational safety in this scenario. Therefore, by continuing to execute the current operating functions even when the charging gun is not connected, the erroneous restriction of vehicle functions in non-charging scenarios is effectively avoided, ensuring the user's normal driving experience in non-charging scenarios.

[0055] To further optimize the accuracy and robustness of connection status determination in the above embodiments, this application also provides the following preferred solution. As mentioned above, the determination of the actual connection status based on vehicle status parameters in step S220 can be specifically achieved by determining the status of the connection signal line.

[0056] In some embodiments, determining the actual connection state between the charging gun and the vehicle based on at least one vehicle state parameter associated with the physical connection state of the charging gun includes: determining a second electrical parameter of the connection confirmation signal line; determining the signal line connection state of the connection confirmation signal line based on the second electrical parameter; determining that the actual connection state indicates the charging gun is connected to the vehicle when the signal line connection state is a connected state or a half-connected state; and determining that the actual connection state indicates the charging gun is not connected to the vehicle when the signal line connection state is a disconnected state.

[0057] The connection confirmation signal line is an electrical signal line used to detect whether the charging gun has established a physical electrical connection with the vehicle. For example, the CC (Connection Confirmation) signal line. The second electrical parameter can be a parameter that reflects the connection characteristics of the connection confirmation signal line. For example, the second electrical parameter can be the resistance value or voltage value of the connection confirmation signal line. The signal line connection status refers to the current connection status of the connection confirmation signal line determined based on the second electrical parameter, such as not connected, partially connected, or connected.

[0058] In practical implementation, the signal line connection status can be determined as follows: The OBC (On-Board Charger) measures the resistance between the CC terminal and the vehicle's protective ground using a resistance measuring circuit. This resistance value can be the average of multiple samples taken by the measuring circuit over a period of time to reduce measurement errors. This resistance value can be used as the second electrical parameter of the connection confirmation signal line. By numerically analyzing this second electrical parameter, the connection status of the charging gun can be determined. For example, when the measured resistance value is infinite, it indicates that the CC signal line has not formed a loop, and the signal line connection status is determined to be unconnected. When the measured resistance value is in the first range, the signal connection status is determined to be connected. When the resistance value is in the second range, the signal connection status is determined to be partially connected. When the resistance value is 0, the connection confirmation signal is determined to be faulty.

[0059] Furthermore, when the signal line connection status is either connected or partially connected, it is assumed that the charging gun is physically connected to the vehicle. In this case, combined with the CP signal fault status, it can be determined that the fault occurs in a charging-related scenario, and the fault handling mechanism needs to be activated. When the signal line connection status is not connected, it is determined that the charging gun is not connected to the vehicle, and the CP signal fault is a false alarm in a non-charging scenario, thus allowing the vehicle to continue to perform its current operating functions.

[0060] This application embodiment directly utilizes the connection status of the existing connection confirmation signal line in the system for physical connection confirmation as the basis for judgment. Since the change of electrical parameters of the connection confirmation signal line is related to the degree of physical contact between the charging gun plug and the vehicle charging interface, the connection status it reflects has high authenticity and can effectively and accurately distinguish different connection states such as charging gun not connected, half connected, and connected. Moreover, without the need to add additional hardware sensors or complex detection circuits, it can achieve accurate judgment of the actual connection status on the basis of the existing hardware architecture, effectively reducing the cost of status determination.

[0061] To further improve the accuracy of determining the actual connection status, in some embodiments, the method further includes: obtaining the switching state of a mechanical contact switch within the vehicle charging interface; wherein the mechanical contact switch is physically triggered and changes state when the charging gun head is inserted into the charging interface; determining that the actual connection status indicates the charging gun is not connected to the vehicle when the signal line connection status is not connected includes: if the switch status indicates that the charging gun is not inserted into the charging interface and the signal line connection status is not connected, then determining that the actual connection status indicates the charging gun is not connected to the vehicle.

[0062] The mechanical contact switch is a mechanical structure triggered by the physical thrust of the charging gun when it is inserted. The switch state only changes when the charging gun is actually inserted into the charging port. The switch state indicates whether the charging gun is inserted into the charging port, is not affected by electrical signal interference, and directly reflects the physical state of whether the charging gun has entered the port.

[0063] In practice, the switching state of the mechanical contact switch can be determined by reading its level signal. For example, when the mechanical contact switch is not triggered, it outputs a high level, indicating that the charging gun is not inserted; when the mechanical contact switch is triggered by a charging gun that has been inserted, it outputs a low level, indicating that the charging gun has been inserted.

[0064] In some embodiments, when the connection confirmation signal line detects a disconnected state, a secondary confirmation can be made by combining the switch status of the mechanical contact switch: if the switch status also indicates that the charging gun is not inserted into the charging interface, and the two detection results are consistent, it can be determined that the charging gun has indeed not established a physical connection with the vehicle, and the actual connection status is directly determined to be disconnected; if the switch status indicates that the charging gun has been inserted into the charging interface, but the connection confirmation signal line shows a disconnected state, it indicates that the charging gun may have a plug not being properly inserted or the connection confirmation signal line itself may be faulty. In this case, the actual connection status can be determined to be that the charging gun is connected to the vehicle, triggering the corresponding fault protection mechanism.

[0065] This application embodiment provides dual detection and verification by adding the on / off state of the mechanical contact switch and combining it with the connection confirmation signal line for joint judgment. This improves the accuracy of the actual connection status judgment result, avoids misjudgment caused by the abnormality of a single detection method, and further enhances the reliability of the actual connection status.

[0066] To further improve the anti-interference capability of the above-mentioned signal line connection status determination, this application provides an implementation method for signal line connection status. Optionally, determining the signal line connection status of the connection confirmation signal line based on a second electrical parameter includes: matching the second electrical parameter with continuous threshold intervals corresponding to different connection states, and determining the signal line connection status based on the matching result; wherein, the continuous threshold interval corresponding to any connection state is determined according to the electrical characteristics of the charging gun.

[0067] In this context, a continuous threshold interval refers to a series of numerical ranges used to match electrical parameter values. These ranges are numerically continuous. For example, multiple intervals are set for the resistance value of the connection confirmation signal line. Each interval corresponds to a connection state, such as the connected state corresponding to intervals (20, A], (A, B], etc. These intervals are continuous on their boundaries.

[0068] It should be noted that by setting a continuous threshold range, the determination result of the second electrical parameter becomes more continuous and fault-tolerant, avoiding misjudgments that might occur due to a single threshold point. For example, if only a fixed threshold is set to distinguish between connected and disconnected states, frequent switching of the signal line connection status can easily occur when the second electrical parameter fluctuates around the threshold due to interference or measurement errors, resulting in poor stability. However, with a continuous threshold range, even if the second electrical parameter fluctuates slightly, as long as it remains within a certain range, the signal line connection status will not change, thereby improving the anti-interference capability and stability of the determination.

[0069] In practical applications, various models of charging guns are designed to meet the requirements of different charging power and interface standards. Different models of charging guns have different maximum permissible charging currents, resulting in differences in their electrical characteristics. These electrical characteristics can be reflected by the standard resistance value of the charging gun. Some charging guns have a standard resistance value of 220Ω, while others may have a value of 1KΩ, etc. Therefore, when determining the continuous threshold range, it is necessary to pre-set a continuous threshold range that can be used to detect the connection status of different models of charging guns, based on their electrical characteristics, to ensure compatibility with charging guns of different specifications. For example, the second electrical parameter is the resistance value. For a charging gun with a standard resistance of 100Ω, the resistance of the connection confirmation signal line should be within the continuous threshold range of (20Ω, A) when connected; for a charging gun with a standard resistance of 220Ω, the resistance should be within the continuous threshold range of (A, B); and for a charging gun with a standard resistance of 680Ω, the resistance should be within the continuous threshold range of (B, C). Therefore, for the connected state, the continuous threshold range can be set to (20Ω, C).

[0070] In practical implementation, the second electrical parameter can be matched with a continuous threshold range of different pre-set connection states. If a continuous threshold range containing the second electrical parameter exists, the connection state corresponding to that range is determined as the signal line connection state.

[0071] This application embodiment determines a continuous threshold range based on the electrical characteristics of the charging gun, ensuring that the continuous threshold range can meet the connection status determination requirements of different charging guns, thereby improving compatibility with different charging guns. Simultaneously, by setting a continuous threshold range, misjudgment problems caused by a single threshold point are effectively avoided, enhancing the anti-interference capability and stability of signal line connection status determination.

[0072] As mentioned above, in addition to using the connection confirmation signal line, other vehicle status parameters can also be used to determine the actual connection status. In other embodiments, the actual connection status between the charging gun and the vehicle is determined based on at least one vehicle status parameter associated with the physical connection status of the charging gun, including: determining the current speed of the vehicle; comparing the current speed with a target speed threshold to obtain a comparison result; and determining the actual connection status between the charging gun and the vehicle based on the comparison result.

[0073] Specifically, OBC can obtain the current speed from the vehicle speed sensor. The target speed threshold can be set to 5 km / h. Because plugging in a charger while driving at high speed is extremely impractical and dangerous, if the current speed is greater than or equal to 5 km / h, the actual connection status is directly determined to mean that the charging gun is not connected to the vehicle; if the current speed is less than 5 km / h, the actual connection status between the vehicle and the charging gun can be determined based on the connection confirmation signal line.

[0074] For example, when the vehicle's current speed is 6 km / h, since this speed is greater than the target speed threshold of 5 km / h, the actual connection status is determined to be that the charging gun is not connected to the vehicle, regardless of the status of the connection confirmation signal line. This is because when the vehicle is in motion (speed ≥ 5 km / h), a physical connection between the charging gun and the vehicle is theoretically impossible. If a CP signal fault is detected at this time, combined with the vehicle status parameter of the current speed, it can be clearly determined to be a false alarm in a non-charging scenario. The vehicle will continue to perform its current driving functions, such as maintaining power output and steering assist, and will not trigger charging-related fault protection measures. However, when the vehicle's current speed is 3 km / h, which is less than the target speed threshold of 5 km / h, the actual connection status is determined to be that the charging gun is connected to the vehicle, or the actual connection status is further determined by combining the second electrical parameter of the connection confirmation signal line (such as the CC signal line).

[0075] This application embodiment uses vehicle speed as an auxiliary criterion to indirectly reflect the physical connection possibility of the charging gun. This method is fast and does not require complex calculations. It can quickly eliminate the possibility of charging gun connection when the vehicle is in motion, further improving the efficiency and accuracy of actual connection status determination.

[0076] In practical applications, the connection confirmation signal line has a higher priority than the speed confirmation signal line. The speed signal line is only used as an auxiliary indicator when its detection result cannot accurately determine the actual connection status. If the connection confirmation signal line directly indicates whether the connection is not connected or connected, its result is used without further speed-based determination to ensure efficiency. For example, if the second electrical parameter of the connection confirmation signal line does not fall within any range, the connection status cannot be determined based on the electrical parameter; in this case, speed can be used as an auxiliary indicator.

[0077] To improve the accuracy of fault diagnosis and avoid misdiagnosis caused by abnormal vehicle power supply, this application provides further optimization solutions. Specifically, the method further includes: determining the vehicle's power supply status based on the vehicle's power supply parameters; wherein, determining the signal status of the control guidance signal based on the first electrical parameter of the vehicle's control guidance signal includes: determining the signal status of the control guidance signal as a fault state when the power supply status is normal and the first electrical parameter is within the fault parameter range.

[0078] The vehicle's power supply parameters typically refer to the system voltage that powers the OBC and its sampling circuits, such as the car battery voltage (often referred to as the KL30 voltage). The fault parameter range refers to a specific range of electrical parameter values; when an electrical parameter falls within this range, the indication signal may be faulty.

[0079] As a specific implementation, the OBC can monitor its input KL30 voltage value. If the KL30 voltage value is within a preset normal voltage range, such as between 9V and 16V, it indicates that the power supply is normal, and the first electrical parameter is collected under normal power supply conditions, so its value has high reliability. Further determination can then be made as to whether the first electrical parameter is within the fault parameter range. If it is within the fault parameter range, the signal state of the control guide signal is determined to be faulty. If it is not within the fault parameter range, the signal state of the control guide signal is determined to be normal.

[0080] If the KL30 voltage value is not within the normal voltage range, it indicates an abnormal power supply status. At this time, the reference reference of the OBC internal circuit may be inaccurate, and the signal status may be deviated based on the first electrical parameter. Therefore, even if the first electrical parameter is within the fault parameter range, the signal status of the control guide signal is not determined to be a fault status for the time being, but the abnormal power supply problem is dealt with first.

[0081] This application embodiment adds a check on the power supply status, ensuring that the fault diagnosis of the control guidance signal itself is performed under normal power supply conditions. This avoids misjudging normal signal measurement deviations as signal faults due to fluctuations in the vehicle's own power supply, reduces the false alarm rate, and improves the reliability of the entire fault diagnosis result.

[0082] After determining the actual connection status of the charging gun, in order to provide clear feedback to the user and execute appropriate control, this application also details differentiated fault handling strategies, the specific implementation of which is as follows. In some embodiments, the method further includes: when the actual connection status indicates that the charging gun is not connected to the vehicle, prompting the user to perform line maintenance according to a first-level fault warning method; when the actual connection status indicates that the charging gun is connected to the vehicle, prompting the user to perform line maintenance according to a second-level fault warning method.

[0083] The severity of a fault is reflected in the Level 1 fault warning method compared to the Level 2 fault warning method. The difference in fault severity determines the intensity of the warning method and the level of detail in the information provided.

[0084] In practice, when the actual connection status indicates that the charging gun is not connected to the vehicle, a Level 1 fault warning is issued to the user to prompt them to check the wiring. This Level 1 fault warning can be implemented as follows: a diagnostic fault code is recorded via the OBC's diagnostic function, indicating a low-level fault; simultaneously, this diagnostic fault code is sent to the vehicle's instrument panel, causing the charging connection status indicator light on the instrument panel to illuminate yellow. Yellow typically indicates a warning or alert, suggesting that the vehicle has an abnormality and recommending subsequent wiring checks, but it does not restrict any of the vehicle's current major functions (such as driving). This approach informs the user of the abnormal situation while minimizing interference with current driving operations.

[0085] When the charging gun is connected to the vehicle, a secondary fault warning is issued to the user to request line maintenance. This secondary warning indicates a higher severity of the fault compared to the primary warning. For example, if the charging gun is connected to the vehicle, the ongoing or upcoming AC charging operation is immediately stopped; a high-level diagnostic fault code is then recorded; and simultaneously, a red charging connection status indicator light is illuminated on the instrument panel. Red typically indicates a serious fault or prohibition, clearly informing the user that charging is currently impossible and maintenance is necessary. This ensures that in real-world charging scenarios, if an abnormal CP signal is detected, the most conservative safety measures can be taken immediately to protect personal and vehicle safety.

[0086] This application embodiment can flexibly adjust the warning method according to different actual connection states. When the charging gun is not connected to the vehicle, a lower level of warning is used, which not only alerts the user to the potential abnormality of the system, but also minimizes interference with the current operation and ensures driving convenience. When the charging gun is connected to the vehicle, a higher level of warning is used to show the user that the current abnormality is of a higher degree of fault and needs to be repaired as soon as possible. This allows the user to intuitively and clearly understand the severity of the fault and avoid safety risks caused by ignoring the fault.

[0087] Furthermore, considering that the fault may be transient or recoverable (e.g., transient distortion of the CP signal due to strong electromagnetic interference) rather than permanent damage to the charging pile or vehicle charging interface, in order not to affect the charging operation, after prompting the user with line maintenance according to the secondary fault warning method, it also includes: continuously monitoring the first electrical parameters of the control guidance signal at multiple moments within the target duration; if the first electrical parameters at multiple moments within the target duration are all within the recovery parameter range, then the vehicle charging process is established.

[0088] The target duration can be set according to the actual application scenario and system stability requirements, such as 5 seconds, 10 seconds, or 30 seconds. Multiple time points can be sampled at equal intervals or randomly to ensure a comprehensive reflection of the stability of the control and guidance signal over a period of time.

[0089] During continuous monitoring, the OBC periodically acquires the first electrical parameter of the CP signal. The sampling period can be set to once per second. This way, data from 10 sampling points will be obtained within a target duration of 10 seconds.

[0090] Secondly, it is necessary to determine whether all 10 primary electrical parameters are within the preset recovery parameter range. The recovery parameter range refers to the numerical interval that the primary electrical parameters should meet when the control guide signal returns to normal working state. For example, the recovery parameter range is less than 0.97V, or greater than 4V and less than 14V.

[0091] If all the first electrical parameters are within the recovery parameter range, the CP signal fault is considered to have been recovered. At this time, the secondary fault warning can be lifted, and the vehicle charging process can be established, such as starting the charger, communicating with the charging pile, and starting the normal charging process.

[0092] If any of the first electrical parameters corresponding to multiple times are outside the range of the recovery parameters, it is determined that the CP signal fault has not been recovered, the level 2 fault warning status will continue, and the vehicle will not be able to start the charging process until the user troubleshoots the fault and triggers the detection again.

[0093] For example, assuming the target duration is set to 10 seconds, the sampling period is 1 second, and the recovery parameter range is set to greater than 4V and less than 14V, when the vehicle is connected to the charging gun and triggers a level 2 fault warning, the OBC begins to collect the first electrical parameter (e.g., voltage value) of the CP signal once per second for the next 10 seconds. If the 10 voltage values ​​collected within these 10 seconds are 5V, 6V, 7V, 8V, 9V, 10V, 11V, 12V, 13V, and 12.5V, and all are found to be within the recovery parameter range of 4V to 14V, the system determines that the CP signal fault has been recovered. At this point, the red charging connection status indicator light on the instrument panel will be turned off, the high-level diagnostic fault code will be cleared, and the vehicle will be allowed to re-establish communication with the charging station to start the normal charging process. Conversely, if the voltage value collected at any point within these 10 seconds is 3V (below the lower limit of the recovery parameter range) or 15V (above the upper limit of the recovery parameter range), the system determines that the fault has not been recovered, the red indicator light will remain on, and the vehicle will remain in a state where charging is prohibited. The user needs to check the charging gun, charging cable, or vehicle charging interface and then unplug and plug the charging gun again to trigger a new round of testing.

[0094] This application provides an automatic fault recovery detection and processing mechanism. By sampling and detecting the first electrical parameter of the control guide signal multiple times within a target time period, it can accurately determine whether the fault has been eliminated. After ensuring that the fault is eliminated, the charging process is automatically started, which reduces the inconvenience of requiring manual intervention to restart the charging after a temporary interference interruption and improves the availability of the charging system.

[0095] The above text provides a detailed description of the embodiments corresponding to the signal fault handling method. In order to enable those skilled in the art to further understand the technical solution of this method, specific application scenarios are given below.

[0096] Scenario 1: Charging scenario First, the OBC checks if the KL30 voltage is within the normal range of 9V to 16V. If the power supply is normal, the OBC begins acquiring the first electrical parameters of the control guidance signal, such as voltage amplitude and duty cycle. Assuming the CP signal voltage amplitude is below 10V (within the preset fault parameter range), the OBC initially determines that the CP signal may be faulty. Next, the OBC acquires the second electrical parameter of the connection confirmation signal line (CC signal), namely the resistance value. By mapping the connection status to continuous threshold intervals, the actual connection status between the charging gun and the vehicle is determined.

[0097] For example, in this mapping relationship, the continuous threshold range corresponding to the unconnected state is a resistance value greater than H. For charging guns with a standard resistance value of [3200Ω-3520Ω], the continuous threshold range for the half-connected state is (G, H). For charging guns with a standard resistance value of 100Ω, the continuous threshold range for the connected state is (20, A); for charging guns with a standard resistance value of 220Ω, the continuous threshold range for the connected state is (A, B); for charging guns with a standard resistance value of 680Ω, the continuous threshold range for the connected state is (B, C); for charging guns with a standard resistance value of 1000Ω, the continuous threshold range for the connected state is (C, D); for charging guns with a standard resistance value of 1500Ω, the continuous threshold range for the connected state is (D, E); for charging guns with a standard resistance value of 2000Ω, the continuous threshold range for the connected state is (E, F); and for charging guns with a standard resistance value of 2700Ω, the continuous threshold range for the connected state is (F, G). If a value outside the above continuous threshold range is detected, the connection state is determined to be incorrect.

[0098] In practical applications, if the detected CC signal line resistance value falls within the range of (20, G), it is determined that the charging gun is actually connected, indicating a charging scenario. Considering both the CP signal fault and the charging gun connection, the OBC executes a level-two fault warning, immediately prohibiting the charging process and recording a high-level diagnostic fault code for subsequent fault location. A red charging connection status indicator light is illuminated on the vehicle's instrument panel to clearly inform the user that the charging system has a serious fault, cannot charge, and requires repair.

[0099] Subsequently, the OBC initiates a fault recovery detection mechanism, sampling the first electrical parameter of the CP signal once per second for the next 10 seconds. If, within these 10 seconds, the voltage amplitude and duty cycle of all sampled values ​​recover to the recovery parameter range (e.g., voltage 4V-14V, duty cycle 85%-97%), the OBC deactivates the red indicator light alarm, clears the high-level fault code, and allows the charging process to begin, with the vehicle starting normal handshake and charging with the charging station. If the first electrical parameter at any sampling point remains within the fault parameter range within 10 seconds, the red indicator light remains illuminated, and the charging process cannot start until the user checks and eliminates faults in the CP signal line or the charging station, and then reconnects the charging gun to trigger the detection.

[0100] Scenario 2: Non-charging scenario OBC continuously monitors the KL30 voltage. If the KL30 voltage is within the normal range of 9V to 16V, OBC periodically acquires the first electrical parameter of the control guide signal. If the acquired CP signal voltage amplitude is abnormal, for example, higher than 16V (within the preset fault parameter range), OBC initially determines that the CP signal may be faulty. Next, OBC acquires the resistance value of the connection confirmation signal line (CC signal). If the detected resistance value of the CC signal line is much greater than the continuous threshold range of the connected state (e.g., infinity), it is determined that the charging gun is not actually connected. Considering both the CP signal fault and the charging gun not being connected, OBC executes a level one fault warning: it records a diagnostic fault code indicating a low-level fault through its diagnostic function and sends this fault code to the vehicle's instrument panel, illuminating the charging connection status indicator light on the instrument panel in yellow. This yellow indicator light alerts the user that there is a potential abnormality in the vehicle's charging system, suggesting that wiring repair be performed at a convenient time. This will not affect the vehicle's normal driving function, ensuring the user's driving safety and convenience. In this scenario, since the vehicle is not charging, there is no need to activate the fault recovery detection mechanism to attempt to establish a charging process; the OBC only needs to continuously monitor relevant parameters.

[0101] This application clearly demonstrates the execution flow of the signal fault handling method provided in this application under different scenarios through the specific description of the two application scenarios above. From the pre-judgment of the power supply status, to the collaborative analysis of the control guidance signal and the connection confirmation signal, to the differentiated fault warning based on the actual connection status, and the automatic detection and charging process restart mechanism for recoverable faults, a complete signal fault handling solution is formed, which maximizes the improvement of user experience and system availability while ensuring charging safety.

[0102] The above text combined Figure 1 The present application describes in detail the embodiments of the signal fault handling method. The following is a detailed description of the embodiments. Figure 2 The embodiments of this application are described in detail below. It should be understood that the descriptions of the signal fault handling method embodiments correspond to the descriptions of the embodiments; therefore, any parts not described in detail can be referred to the foregoing method embodiments.

[0103] Figure 2 The diagram shown is a structural schematic of a signal fault processing device provided in an embodiment of this application. Figure 2 As shown, the 20 provided in this application embodiment includes: The first state determination module 210 is used to determine the signal state of the control guidance signal based on the first electrical parameters of the vehicle's control guidance signal. The second state determination module 220 is used to determine the actual connection state between the charging gun and the vehicle based on at least one vehicle state parameter associated with the physical connection state of the charging gun when the signal state characterization control guidance signal fails. The function execution module 230 is used to continue executing the vehicle's current operating functions when the actual connection status indicates that the charging gun is not connected to the vehicle.

[0104] In one embodiment of this application, the second state determination module 220 is further configured to: determine the second electrical parameters of the connection confirmation signal line; determine the signal line connection state of the connection confirmation signal line based on the second electrical parameters; determine the actual connection state indicating that the charging gun is connected to the vehicle when the signal line connection state is a connected state or a half-connected state; and determine the actual connection state indicating that the charging gun is not connected to the vehicle when the signal line connection state is a disconnected state.

[0105] In one embodiment of this application, the second state determination module 220 is further configured to match the second electrical parameter with a continuous threshold interval corresponding to different connection states, and determine the signal line connection state based on the matching result; wherein, the continuous threshold interval corresponding to any connection state is determined according to the electrical characteristics of the charging gun.

[0106] In one embodiment of this application, the second state determination module 220 is further configured to: determine the current speed of the vehicle; compare the current speed with a target speed threshold to obtain a comparison result; and determine the actual connection state between the charging gun and the vehicle based on the comparison result.

[0107] In one embodiment of this application, the device further includes: a power supply status determination module, used to determine the power supply status of the vehicle based on the power supply parameters of the vehicle; wherein, the first status determination module 210 is further used to determine the signal status of the control guidance signal as a fault state when the power supply status is normal and the first electrical parameter is within the fault parameter range.

[0108] In one embodiment of this application, the device further includes: a prompting module, used to prompt the user for line maintenance according to a first-level fault warning method when the actual connection status indicates that the charging gun is not connected to the vehicle; and to prompt the user for line maintenance according to a second-level fault warning method when the actual connection status indicates that the charging gun is connected to the vehicle; wherein the severity of the fault reflected by the first-level fault warning method is lower than the severity of the fault reflected by the second-level fault warning method.

[0109] In one embodiment of this application, the prompting module is further configured to continuously detect the first electrical parameters of the control guidance signal at multiple times within a target duration after prompting the user for line maintenance in accordance with the second-level fault warning method; if the first electrical parameters at multiple times within the target duration are all within the recovery parameter range, then the vehicle charging process is established.

[0110] In one embodiment of this application, the second state determination module 220 is further configured to obtain the switching state of the mechanical contact switch in the vehicle charging interface; wherein the mechanical contact switch is physically triggered and changes state when the charging gun head is inserted into the charging interface; if the switching state indicates that the charging gun is not inserted into the charging interface and the signal line connection state is unconnected, then it is determined that the actual connection state indicates that the charging gun is not connected to the vehicle.

[0111] In this embodiment, when the signal status of the control guidance signal is initially determined to be faulty, the vehicle's current operating functions are not directly restricted in the traditional way. Instead, the vehicle status parameters are used to further confirm whether the charging gun is actually connected. If the actual connection status shows that the charging gun is not connected to the vehicle, it indicates that the vehicle is currently in a non-charging scenario. The signal fault may be a misjudgment caused by abnormality or interference in the signal sampling circuit under non-charging conditions, and will not have a substantial impact on the vehicle's operational safety in this scenario. Therefore, by continuing to execute the current operating functions even when the charging gun is not connected, the erroneous restriction of vehicle functions in non-charging scenarios is effectively avoided, ensuring the user's normal driving experience in non-charging scenarios.

[0112] It is worth noting that in the embodiments of the above-mentioned signal fault processing device, the various units and modules included are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be achieved; in addition, the specific names of each functional unit are only for easy differentiation and are not used to limit the scope of protection of the present invention.

[0113] Below, for reference Figure 3 To describe the vehicle according to embodiments of this application. Figure 3 The diagram shown is a structural schematic of a vehicle provided in an exemplary embodiment of this application.

[0114] like Figure 3 As shown, vehicle 30 includes one or more processors 301 and memory 302.

[0115] The processor 301 may be a central processing unit (CPU) or other form of processing unit with data processing capabilities and / or instruction execution capabilities, and may control other components in the vehicle 30 to perform desired functions.

[0116] The memory 302 may include one or more computer program products, which may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. Volatile memory may include, for example, random access memory (RAM) and / or cache memory. Non-volatile memory may include, for example, read-only memory (ROM), hard disk, flash memory, etc. One or more computer program instructions may be stored on the computer-readable storage medium, and the processor 301 may execute the program instructions to implement the signal fault handling methods of the various embodiments of this application described above and / or other desired functions.

[0117] In one example, vehicle 30 may also include input device 303 and output device 304, which are interconnected via a bus system and / or other forms of connection mechanism (not shown).

[0118] The input device 303 may include, for example, a keyboard, a mouse, etc.

[0119] The output device 304 can output various information to the outside. The output device 304 may include, for example, a display, a speaker, a printer, and a communication network and its connected remote output devices, etc.

[0120] Of course, for the sake of simplicity, Figure 3 Only some of the components of vehicle 30 relevant to this application are shown in this illustration; components such as buses, input / output interfaces, etc., are omitted. In addition, vehicle 30 may include any other suitable components depending on the specific application.

[0121] In addition to the methods and devices described above, embodiments of this application may also be computer program products, which include computer program instructions that, when executed by a processor, cause the processor to perform the steps in the signal fault handling methods according to various embodiments of this application described above.

[0122] Computer program products can be written in any combination of one or more programming languages ​​to perform the operations of the embodiments of this application. The programming languages ​​include object-oriented programming languages ​​such as Java and C++, as well as conventional procedural programming languages ​​such as C or similar languages. The program code can be executed entirely on the user's computing device, partially on the user's computing device, as a standalone software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0123] Furthermore, embodiments of this application may also be computer-readable storage media storing computer program instructions thereon, which, when executed by a processor, cause the processor to perform the steps in the signal fault handling methods according to various embodiments of this application described above.

[0124] Computer-readable storage media may take the form of any combination of one or more readable media. A readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may, for example, include, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatuses, or devices, or any combination thereof. More specific examples of readable storage media (a non-exhaustive list) include: electrical connections having one or more wires, portable disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0125] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details of the above application are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0126] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0127] It should also be noted that in the apparatus, equipment, and methods of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.

[0128] The above description of the claimed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be applied within the widest scope consistent with the principles and novel features of this application.

[0129] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms described herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A signal fault handling method, characterized in that, include: The signal state of the control guidance signal is determined based on the first electrical parameter of the vehicle's control guidance signal; In the event that the signal state indicates a failure of the control guidance signal, the actual connection state between the charging gun and the vehicle is determined based on at least one vehicle state parameter associated with the physical connection state of the charging gun. If the actual connection status indicates that the charging gun is not connected to the vehicle, the vehicle's current operating functions will continue to be executed.

2. The method according to claim 1, characterized in that, Determining the actual connection state between the charging gun and the vehicle based on at least one vehicle state parameter associated with the physical connection state of the charging gun includes: Determine the second electrical parameter of the connection confirmation signal line; wherein, the connection confirmation signal line is an electrical signal line used to detect whether the charging gun has established a physical electrical connection with the vehicle; The signal line connection status of the connection confirmation signal line is determined based on the second electrical parameter. When the signal line connection status is either connected or partially connected, the actual connection status indicates that the charging gun is connected to the vehicle. If the signal line connection status is not connected, the actual connection status indicates that the charging gun is not connected to the vehicle.

3. The method according to claim 2, characterized in that, The step of determining the signal line connection status of the connection confirmation signal line based on the second electrical parameter includes: The second electrical parameter is matched with a continuous threshold range corresponding to different connection states, and the connection state of the signal line is determined based on the matching result. The continuous threshold interval corresponding to any of the connection states is determined based on the electrical characteristics of the charging gun.

4. The method according to claim 1, characterized in that, Determining the actual connection state between the charging gun and the vehicle based on at least one vehicle state parameter associated with the physical connection state of the charging gun includes: Determine the current speed of the vehicle; The current speed is numerically compared with the target speed threshold to obtain the comparison result; Based on the comparison results, the actual connection status between the charging gun and the vehicle is determined.

5. The method according to claim 1, characterized in that, Also includes: Based on the vehicle's power supply parameters, determine the vehicle's power supply status; The determination of the signal state of the control guidance signal based on the first electrical parameter of the vehicle control guidance signal includes: If the power supply is in a normal state and the first electrical parameter is within the fault parameter range, the signal state of the control guidance signal is determined to be a fault state.

6. The method according to claim 1, characterized in that, Also includes: If the actual connection status indicates that the charging gun is not connected to the vehicle, the user will be prompted to perform line maintenance according to the first-level fault warning method. When the actual connection status indicates that the charging gun is connected to the vehicle, the user is prompted to perform line maintenance according to the second-level fault warning method. The severity of the fault reflected by the first-level fault warning method is lower than that reflected by the second-level fault warning method.

7. The method according to claim 6, characterized in that, After providing line maintenance prompts to users according to the level-two fault warning method, the following is also included: The first electrical parameters of the control guidance signal are continuously detected at multiple moments within the target duration. If the first electrical parameters at multiple times within the target duration are all within the recovery parameter range, then the charging process for the vehicle is established.

8. The method according to claim 2, characterized in that, Also includes: The on / off state of the mechanical contact switch inside the vehicle charging interface is obtained; wherein the mechanical contact switch is physically triggered and changes state when the charging gun head is inserted into the charging interface. When the signal line connection status is not connected, determining that the actual connection status indicates the charging gun is not connected to the vehicle includes: If the switch state indicates that the charging gun is not inserted into the charging interface and the signal line connection state is the unconnected state, then the actual connection state indicates that the charging gun is not connected to the vehicle.

9. A computer-readable storage medium, characterized in that, The storage medium stores a computer program for executing the signal fault handling method according to any one of claims 1 to 8.

10. A vehicle, characterized in that, include: processor; Memory used to store the processor's executable instructions; The processor is used to execute the signal fault handling method according to any one of claims 1 to 8.

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