Insulation monitoring method and system

Abstract

The invention provides an insulation monitoring method and system, and belongs to the field of insulation monitoring, and the method comprises the steps: obtaining the working state and environment parameters of a charging pile, and the working state comprises a charging state or a dormant state; in response to the charging state of the charging pile, determining a first window threshold set according to the first charging parameter and the environmental parameter, the first charging parameter being a charging parameter of the charging pile in the current working period, and performing insulation monitoring on the charging pile according to the first window threshold set; in response to the situation that the charging pile is in the dormant state, a second window threshold set is determined according to a second charging parameter and the environment parameter, and the second charging parameter is the charging parameter of the charging pile in the last working period; and performing insulation monitoring on the charging pile according to the second window threshold set. The insulation monitoring method and system provided by the invention can provide high working stability and reliability of the charging pile.

Description

Technical Field

[0001] The present application belongs to the technical field of insulation monitoring, and more specifically, relates to an insulation monitoring method and system. Background Art

[0002] Charging pile insulation monitoring plays a crucial role in its proper operation. Charging piles operate in a complex environment, often accompanied by strong electromagnetic sources such as high-frequency switches (such as IGBTs) and motor controllers. These can easily cause crosstalk on insulation monitoring signals, leading to distorted measurement data. In some cases, this can even trigger false alarms, triggering protective measures, impacting normal operation, and reducing user experience. Summary of the Invention

[0003] The purpose of this application is to provide an insulation monitoring method and system to improve the working stability and reliability of charging piles.

[0004] A first aspect of an embodiment of the present application provides an insulation monitoring method, comprising: Obtain the working status and environmental parameters of the charging pile, the working status includes charging status or dormant status; In response to the charging pile being in a charging state, determining a first window threshold set based on a first charging parameter and an environmental parameter, the first charging parameter being a charging parameter of the charging pile in a current working cycle, the first window threshold set including a first number of insulation monitoring window thresholds; and performing insulation monitoring on the charging pile based on the first window threshold set; In response to the charging pile being in a dormant state, a second window threshold set is determined based on a second charging parameter and an environmental parameter, the second charging parameter being a charging parameter of the charging pile in a previous working cycle, the second window threshold set including a second number of insulation monitoring window thresholds, the first number being greater than the second number; insulation monitoring of the charging pile is performed based on the second window threshold set.

[0005] A second aspect of the embodiments of the present application provides an insulation monitoring system, comprising: A data acquisition module is used to obtain the working status and environmental parameters of the charging pile, where the working status includes charging status or dormant status; a first judgment module, configured to, in response to the charging pile being in a charging state, determine a first window threshold set based on a first charging parameter and an environmental parameter, the first charging parameter being a charging parameter of the charging pile in a current working cycle, the first window threshold set including a first number of insulation monitoring window thresholds; and perform insulation monitoring on the charging pile based on the first window threshold set; The second judgment module is used to determine a second window threshold set in response to the charging pile being in a dormant state according to a second charging parameter and an environmental parameter, the second charging parameter being a charging parameter of the charging pile in the previous working cycle, the second window threshold set including a second number of insulation monitoring window thresholds, the first number being greater than the second number; and perform insulation monitoring on the charging pile according to the second window threshold set.

[0006] According to a third aspect of an embodiment of the present application, an electronic device is provided, comprising a memory, a processor, and a computer program stored in the memory and running on the processor, wherein the processor implements the steps of the above-mentioned insulation monitoring method when executing the computer program.

[0007] According to a fourth aspect of the embodiments of the present application, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the above-mentioned insulation monitoring method are implemented.

[0008] In a fifth aspect of an embodiment of the present application, a computer program product is provided, comprising a computer program or computer executable instructions. When the computer program or computer executable instructions are executed by a processor, the steps of the above-mentioned insulation monitoring method are implemented.

[0009] The insulation monitoring method and system provided by the embodiments of the present application have the following beneficial effects: The embodiments of the present application can determine a set of window thresholds for the charging pile under different operating conditions based on the operating state of the charging pile, wherein the window threshold set includes multiple insulation monitoring window thresholds with different time windows. By performing insulation monitoring on the charging pile according to its different operating states, it can better adapt to different working scenarios, reduce false alarms, and improve the reliability of the charging pile insulation monitoring, thereby ensuring the operating stability and reliability of the charging pile. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0011] Figure 1 A schematic flow chart of an insulation monitoring method provided in one embodiment of the present application; Figure 2 A structural block diagram of an insulation monitoring system provided in one embodiment of the present application; Figure 3 A schematic block diagram of an electronic device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0012] In the following description, specific details such as specific system structures and techniques are provided for purposes of illustration rather than limitation to facilitate a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid obscuring the description of the present application with unnecessary detail.

[0013] In order to make the purpose, technical solutions and advantages of this application clearer, specific embodiments will be described below with reference to the accompanying drawings.

[0014] Please refer to Figure 1 , Figure 1 A flowchart of an insulation monitoring method provided in an embodiment of the present application can be executed by a central control module in a charging pile. The method can include S101 to S103.

[0015] S101: Acquire the working status and environmental parameters of the charging pile, where the working status includes charging status or dormant status.

[0016] In this embodiment, the operating status and environmental parameters of the charging pile can be periodically collected within a set collection time. The operating status of the charging pile can be determined based on whether the charging pile is charging. When the charging pile is charging, it can be determined that the charging pile is in the operating state. When the charging pile is not charging, it can be determined that the charging pile is in the dormant state.

[0017] Specifically, judging the working status of the charging pile within the collection time may include: In response to the working time length of the charging pile in the charging state being greater than or equal to the dormant time length of the charging pile in the dormant state within the collection time length, it is determined that the charging pile is in the charging state.

[0018] In response to the working time length of the charging pile in the charging state being less than the sleep time length of the charging pile in the sleep state within the collection time length, it is determined that the charging pile is in the sleep state.

[0019] In response to the charging pile being in the working state during the collection time, it can be determined that the charging pile is in the working state.

[0020] In response to the charging pile being in the dormant state within the collection time period, it can be determined that the charging pile is in the dormant state.

[0021] The embodiment of the present application can determine the state of the charging pile in combination with the working time of the charging pile in different working states within the collection time, so as to accurately divide the working state of the charging pile.

[0022] In this embodiment, the environmental parameters of the charging pile may include the ambient temperature or ambient humidity of the operating environment of the charging pile.

[0023] S102: In response to the charging pile being in a charging state, determine a first window threshold set based on a first charging parameter and an environmental parameter, where the first charging parameter is a charging parameter of the charging pile in a current working cycle, and the first window threshold set includes a first number of insulation monitoring window thresholds; perform insulation monitoring on the charging pile according to the first window threshold set.

[0024] In this embodiment, a first charging parameter of the charging pile can be obtained. The first charging parameter can be the charging power, charging current, or charging voltage of the charging pile in the current charging state. The first charging parameter may have different effects on the insulation state of the charging pile under different parameter values. The greater the charging power, the higher the insulation requirements for the charging pile may be. The lower the charging power, the lower the insulation requirements for the charging pile may be.

[0025] In the embodiment of the present application, the insulation monitoring window threshold is a threshold used to determine whether an insulation fault occurs in the charging pile. Different insulation monitoring window thresholds have different time windows.

[0026] For example, the first window threshold set includes a short insulation monitoring window threshold, a medium insulation monitoring window threshold, and a long insulation monitoring window threshold. The time window of the short insulation monitoring window threshold is set to 50ms, the time window of the medium insulation monitoring window threshold is set to 200ms, and the time window of the long insulation monitoring window threshold is set to 1000ms. Specific settings can be made according to actual conditions.

[0027] In an embodiment of the present application, a standard window threshold set for a charging pile under ideal conditions may be provided, the standard window threshold set including multiple standard insulation monitoring window thresholds. At the same time, standard charging parameters and standard environmental parameters of the charging pile under ideal conditions may be determined.

[0028] In an embodiment of the present application, a first charging parameter can be compared with a standard charging parameter to determine a first difference value. Furthermore, a current environmental parameter can be compared with a standard environmental parameter to determine a second difference value. A weight adjustment coefficient is determined based on the first difference value and the second difference value, and the weight adjustment coefficient is used to weight the standard insulation monitoring window threshold set to determine the weighted standard insulation monitoring window threshold value as the first window threshold set.

[0029] After obtaining the first window threshold set, the collected insulation resistance value can be compared with the first window threshold set to monitor the insulation of the charging pile. When the insulation resistance value exceeds the limit, it can be determined that the charging pile may have an insulation fault.

[0030] Optionally, the insulation resistance value may be compared with each insulation monitoring window threshold value in the first window threshold value set, and the insulation fault type of the charging pile may be determined by judging the number of insulation resistance values ​​exceeding the limit and the value of the exceeding limit.

[0031] S103: In response to the charging pile being in a dormant state, a second window threshold set is determined based on a second charging parameter and an environmental parameter, where the second charging parameter is a charging parameter of the charging pile in a previous working cycle, and the second window threshold set includes a second number of insulation monitoring window thresholds, where the first number is greater than the second number; insulation monitoring is performed on the charging pile based on the second window threshold set.

[0032] In this embodiment, a second charging parameter of the charging pile can be obtained. The second charging parameter can be the charging power, charging current or charging voltage of the charging state of the charging pile in the previous working cycle. The second charging parameter may have different effects on the insulation state of the charging pile under different parameter values. The greater the charging power, the higher the insulation requirements for the charging pile may be. The lower the charging power, the lower the insulation requirements for the charging pile may be. When the charging pile is in a dormant state, the charging parameters of the previous working cycle adjacent to it will affect its insulation requirements. However, the impact is generally smaller than when the charging pile is in a charging state. When the charging pile is in a dormant state, the insulation detection requirements of the charging pile can be appropriately reduced.

[0033] In the embodiment of the present application, the insulation monitoring window threshold is a threshold used to determine whether an insulation fault occurs in the charging pile. Different insulation monitoring window thresholds have different time windows.

[0034] For example, the second window threshold set includes a short insulation monitoring window threshold, a medium insulation monitoring window threshold, and a long insulation monitoring window threshold. The time window of the short insulation monitoring window threshold is set to 30ms, the time window of the medium insulation monitoring window threshold is set to 150ms, and the time window of the long insulation monitoring window threshold is set to 700ms. Specific settings can be made according to actual conditions.

[0035] In an embodiment of the present application, a standard window threshold set for a charging pile under ideal conditions may be provided, the standard window threshold set including multiple standard insulation monitoring window thresholds. At the same time, standard charging parameters and standard environmental parameters of the charging pile under ideal conditions may be determined.

[0036] In an embodiment of the present application, the second charging parameter and the standard charging parameter may be compared to determine a third difference value. Furthermore, the current environmental parameter and the standard environmental parameter may be compared to determine a fourth difference value. A weight adjustment coefficient is determined based on the third and fourth difference values, and the weight adjustment coefficient is used to weight the standard insulation monitoring window threshold set to determine the weighted standard insulation monitoring window threshold value as the second window threshold set.

[0037] After obtaining the second window threshold set, the collected insulation resistance value can be compared with the second window threshold set to monitor the insulation of the charging pile. When the insulation resistance value exceeds the limit, it can be determined that the charging pile may have an insulation fault.

[0038] Optionally, the insulation resistance value may be compared with each insulation monitoring window threshold value in the second window threshold value set, and the insulation fault type of the charging pile may be determined by judging the number of insulation resistance values ​​exceeding the limit and the value of the exceeding limit.

[0039] In an embodiment of the present application, the time windows of the insulation monitoring window thresholds in the first window threshold set are different, and the time windows of the insulation monitoring window thresholds in the second window threshold set are different.

[0040] The first number is generally greater than the second number. This is because the insulation requirements for the charging pile are higher when it is charging, requiring more insulation monitoring thresholds for monitoring in different time windows. When the charging pile is in a dormant state, the insulation requirements become lower, and a large number of insulation monitoring thresholds for monitoring in different time windows is not required. The first number can be determined based on the length of time the charging pile has been charging, and the first number can increase as the charging time increases. The second number can decrease as the length of time the charging pile has been dormant increases. The specific setting can be based on actual conditions.

[0041] From the above, it can be concluded that the embodiments of the present application can determine a set of window thresholds for the charging pile in different operating states based on the operating state of the charging pile, and the window threshold set includes multiple insulation monitoring window thresholds with different time windows. Monitoring the insulation of the charging pile according to its different operating states can better adapt to different working scenarios, reduce false alarms, and improve the reliability of the insulation monitoring of the charging pile, thereby ensuring the operating stability and reliability of the charging pile.

[0042] In one embodiment of the present application, the first charging parameter includes a plurality of charging parameters, and the environmental parameter includes a plurality of environmental parameters; Determining a first window threshold set according to the first charging parameter and the environmental parameter includes: If the first target charging parameter is greater than the charging threshold corresponding to the first target charging parameter, the weight value corresponding to the first target charging parameter is marked as the first charging weight, and the first target charging parameter is the charging parameter in the first charging parameter; if the first target charging parameter is less than or equal to the charging threshold corresponding to the first target charging parameter, the weight value corresponding to the first target charging parameter is marked as the second charging weight, and the first charging weight is greater than the second charging weight; If the first target environmental parameter is greater than the environmental threshold corresponding to the first target environmental parameter, the weight value corresponding to the first target environmental parameter is marked as the first environmental weight, and the first target environmental parameter is an environmental parameter among the multiple environmental parameters; if the first target environmental parameter is less than or equal to the environmental threshold corresponding to the first target environmental parameter, the weight value corresponding to the first target environmental parameter is marked as the second environmental weight, and the first environmental weight is greater than the second environmental weight; Calculating an average of all first charging weights, all second charging weights, all first environment charging weights, and all second environment charging weights as a first target weight; Each insulation monitoring window threshold in the target window threshold set is multiplied by the first target weight to obtain a first window threshold set.

[0043] In the embodiment of the present application, each charging parameter may correspond to a threshold value. When the charging parameter exceeds the corresponding threshold value, a higher charging weight, i.e., a first charging weight, may be assigned. When the charging parameter does not exceed the corresponding threshold value, a lower charging weight, i.e., a second charging weight, may be assigned.

[0044] In the embodiment of the present application, each environmental parameter may correspond to a threshold value. When the environmental parameter exceeds the corresponding threshold value, a higher environmental weight may be assigned, i.e., a first environmental weight. When the environmental parameter does not exceed the corresponding threshold value, a lower environmental weight may be assigned, i.e., a second environmental weight.

[0045] In the embodiment of the present application, the weight values ​​of all the marks (including charging and environmental parameters) can be averaged to obtain the final first target weight to balance the influence of different parameters and avoid misjudgment caused by abnormality of a single parameter.

[0046] The embodiment of the present application can dynamically calculate weight values ​​for charging parameters and environmental parameters, and then determine the first window threshold set. Through a hierarchical weighting mechanism, it can adapt to different working conditions and improve scene adaptability.

[0047] In one embodiment of the present application, the second charging parameter includes a plurality of charging parameters, and the environmental parameter includes a plurality of environmental parameters; Determining a second window threshold set according to the second charging parameter and the environmental parameter includes: If the second target charging parameter is greater than the charging threshold corresponding to the second target charging parameter, the weight value corresponding to the second target charging parameter is marked as the third charging weight, and the second target charging parameter is the charging parameter in the first charging parameter; if the second target charging parameter is less than or equal to the charging threshold corresponding to the second target charging parameter, the weight value corresponding to the second target charging parameter is marked as zero; If the second target environmental parameter is greater than the environmental threshold corresponding to the second target environmental parameter, the weight value corresponding to the second target environmental parameter is marked as the fourth environmental weight, and the second target environmental parameter is an environmental parameter among the multiple environmental parameters; if the second target environmental parameter is less than or equal to the environmental threshold corresponding to the first target environmental parameter, the weight value corresponding to the first target environmental parameter is recorded as zero; Calculate the average of all third weights and all fourth weights as the second target weight; Each insulation monitoring window threshold value in the target window threshold value set is multiplied by the second target weight to obtain a second window threshold value set.

[0048] In the embodiment of the present application, when the charging pile is in a dormant state, each charging parameter may correspond to a threshold value. When the charging parameter exceeds the corresponding threshold value, a higher charging weight, i.e., the third charging weight, may be assigned. When the charging parameter does not exceed the corresponding threshold value, a value of 0 may be assigned.

[0049] In the embodiment of the present application, when the charging pile is in a dormant state, each environmental parameter may correspond to a threshold value. When the environmental parameter exceeds the corresponding threshold value, a higher environmental weight, i.e., the fourth environmental weight, may be assigned. When the environmental parameter does not exceed the corresponding threshold value, a value of 0 may be assigned.

[0050] In the embodiment of the present application, the weight values ​​of all the marks (including charging and environmental parameters) can be averaged to obtain the final first target weight to balance the influence of different parameters and avoid misjudgment caused by abnormality of a single parameter.

[0051] This embodiment of the present application dynamically adjusts the monitoring threshold using a differentiated weighting mechanism based on the charging parameters of the previous working cycle and the current environmental parameters. Compared to the charging state, this embodiment of the present application can use a simpler weight calculation method in the sleep state and directly assign zero weight to parameters below the threshold. This reflects the special nature of insulation monitoring in the sleep state, reduces the computational effort, and improves accuracy.

[0052] In one embodiment of the present application, the first window threshold value set includes a plurality of insulation monitoring window threshold values, and the time windows of the respective insulation monitoring window threshold values ​​are different; The charging pile is subjected to insulation monitoring according to the first window threshold set, including: Get the insulation resistance value of the charging pile; The insulation resistance value is compared with each insulation monitoring window threshold in the first window threshold set to obtain multiple comparison results, and insulation monitoring is performed on the charging pile according to the multiple comparison results.

[0053] In one embodiment of the present application, the first window threshold value set includes a first insulation monitoring window threshold value, a second insulation monitoring window threshold value, and a third insulation monitoring window threshold value; the time window corresponding to the first insulation monitoring window threshold value is smaller than the time window corresponding to the second insulation monitoring window threshold value, and the time window corresponding to the second insulation monitoring window threshold value is smaller than the time window corresponding to the third insulation monitoring window threshold value; The insulation resistance value is compared with each insulation monitoring window threshold value in the first window threshold value set to obtain multiple comparison results, including: If the insulation resistance value is less than the first insulation monitoring window threshold, it is determined that the charging pile is in a transient insulation fault state; If the insulation resistance value is less than the second insulation monitoring window threshold, it is determined that the charging pile is in a periodic insulation abnormality state; If the insulation resistance value is less than the third insulation monitoring window threshold, it is determined that the charging pile is in an insulation degradation state.

[0054] In an embodiment of the present application, the first insulation monitoring window threshold can be marked as a short window threshold, the second insulation monitoring window threshold can be marked as a medium window threshold, and the third insulation monitoring window threshold can be marked as a long window threshold.

[0055] For example, if the insulation resistance value is less than the short window threshold and lasts for 2 cycles, it is determined that the charging pile is currently in a transient insulation fault, which can be marked as triggering an early warning of the first insulation monitoring window threshold.

[0056] If the insulation resistance value is less than the middle window threshold for five consecutive middle window periods, it is determined that the charging pile is under periodic interference and the insulation is abnormal, which can be marked as triggering the warning of the second insulation monitoring window threshold.

[0057] If the insulation resistance value is less than the long window threshold, it is determined that the charging pile is in long-term insulation degradation, which can be marked as triggering an early warning of the third insulation monitoring window threshold.

[0058] In an embodiment of the present application, the method may further include: If the insulation resistance value triggers the warning of the first insulation monitoring window threshold, but does not trigger the warning of the second insulation monitoring window threshold and the warning of the third insulation monitoring window threshold, it is determined to be a false alarm of the charging pile and no alarm action is triggered.

[0059] If the insulation resistance value triggers the warning of the third insulation monitoring threshold, and triggers the warning of the second insulation monitoring threshold within a certain period of time, and does not trigger the warning of the first insulation monitoring threshold, it can be determined that the charging pile is in an insulation degradation state and an alarm signal is output.

[0060] If the insulation resistance value simultaneously triggers the warning of the first insulation monitoring window threshold, the warning of the second insulation monitoring window threshold and the warning of the third insulation monitoring window threshold, the charging pile can be judged as an emergency fault, and a cut-off signal is output to control the power off of the charging pile.

[0061] The embodiment of the present application can take into account both real-time performance and trend analysis through the complementary form of multiple windows, avoiding the omission of sudden or slow-changing signals by a single window, and can also reduce noise interference and improve anti-interference capabilities.

[0062] Corresponding to the insulation monitoring method of the above embodiment, Figure 2 This is a structural block diagram of an insulation monitoring system provided in one embodiment of the present application. For ease of explanation, only the parts related to the embodiment of the present application are shown. Figure 2 The insulation monitoring system 20 includes: a data acquisition module 21 , a first judgment module 22 and a second judgment module 23 . The data acquisition module 21 is used to obtain the working status and environmental parameters of the charging pile, where the working status includes the charging state or the dormant state; a first determining module 22 for determining, in response to the charging pile being in a charging state, a first window threshold set based on a first charging parameter and an environmental parameter, wherein the first charging parameter is a charging parameter of the charging pile in a current working cycle, the first window threshold set including a first number of insulation monitoring window thresholds; and performing insulation monitoring on the charging pile according to the first window threshold set; The second judgment module 23 is used to determine a second window threshold set in response to the charging pile being in a dormant state according to a second charging parameter and an environmental parameter, the second charging parameter being a charging parameter of the charging pile in the previous working cycle, the second window threshold set including a second number of insulation monitoring window thresholds, the first number being greater than the second number; and perform insulation monitoring on the charging pile according to the second window threshold set.

[0063] In one embodiment of the present application, the time windows of the insulation monitoring window thresholds in the first window threshold set are different, and the time windows of the insulation monitoring window thresholds in the second window threshold set are different.

[0064] In one embodiment of the present application, the first charging parameter includes a plurality of charging parameters, and the environmental parameter includes a plurality of environmental parameters; The first judgment module 22 is specifically configured to mark the weight value corresponding to the first target charging parameter as a first charging weight if the first target charging parameter is greater than the charging threshold corresponding to the first target charging parameter, where the first target charging parameter is a charging parameter in the first charging parameters; and mark the weight value corresponding to the first target charging parameter as a second charging weight if the first target charging parameter is less than or equal to the charging threshold corresponding to the first target charging parameter, where the first charging weight is greater than the second charging weight. If the first target environmental parameter is greater than the environmental threshold corresponding to the first target environmental parameter, the weight value corresponding to the first target environmental parameter is marked as the first environmental weight, and the first target environmental parameter is an environmental parameter among the multiple environmental parameters; if the first target environmental parameter is less than or equal to the environmental threshold corresponding to the first target environmental parameter, the weight value corresponding to the first target environmental parameter is marked as the second environmental weight, and the first environmental weight is greater than the second environmental weight; Calculating an average of all first charging weights, all second charging weights, all first environment charging weights, and all second environment charging weights as a first target weight; Each insulation monitoring window threshold in the target window threshold set is multiplied by the first target weight to obtain a first window threshold set.

[0065] In one embodiment of the present application, the second charging parameter includes a plurality of charging parameters, and the environmental parameter includes a plurality of environmental parameters; The second judgment module 23 is specifically configured to mark the weight value corresponding to the second target charging parameter as a third charging weight if the second target charging parameter is greater than a charging threshold corresponding to the second target charging parameter, where the second target charging parameter is a charging parameter in the first charging parameter; and mark the weight value corresponding to the second target charging parameter as zero if the second target charging parameter is less than or equal to the charging threshold corresponding to the second target charging parameter; If the second target environmental parameter is greater than the environmental threshold corresponding to the second target environmental parameter, the weight value corresponding to the second target environmental parameter is marked as the fourth environmental weight, and the second target environmental parameter is an environmental parameter among the multiple environmental parameters; if the second target environmental parameter is less than or equal to the environmental threshold corresponding to the first target environmental parameter, the weight value corresponding to the first target environmental parameter is recorded as zero; Calculate the average of all third weights and all fourth weights as the second target weight; Each insulation monitoring window threshold value in the target window threshold value set is multiplied by the second target weight to obtain a second window threshold value set.

[0066] In one embodiment of the present application, the first window threshold value set includes a plurality of insulation monitoring window threshold values, and the time windows of the respective insulation monitoring window threshold values ​​are different; The first judgment module 22 is further used to obtain the insulation resistance value of the charging pile; The insulation resistance value is compared with each insulation monitoring window threshold in the first window threshold set to obtain multiple comparison results, and insulation monitoring is performed on the charging pile according to the multiple comparison results.

[0067] In one embodiment of the present application, the first window threshold value set includes a first insulation monitoring window threshold value, a second insulation monitoring window threshold value, and a third insulation monitoring window threshold value; the time window corresponding to the first insulation monitoring window threshold value is smaller than the time window corresponding to the second insulation monitoring window threshold value, and the time window corresponding to the second insulation monitoring window threshold value is smaller than the time window corresponding to the third insulation monitoring window threshold value; The first judgment module 22 is further configured to determine that the charging pile is in a transient insulation fault state if the insulation resistance value is less than a first insulation monitoring window threshold; If the insulation resistance value is less than the second insulation monitoring window threshold, it is determined that the charging pile is in a periodic insulation abnormality state; If the insulation resistance value is less than the third insulation monitoring window threshold, it is determined that the charging pile is in an insulation degradation state.

[0068] In one embodiment of the present application, the data acquisition module 21 is further configured to determine that the charging pile is in the charging state in response to a working time length of the charging pile in the charging state being greater than or equal to a dormant time length of the charging pile in the dormant state within the collection time length; In response to the working time length of the charging pile in the charging state being less than the sleep time length of the charging pile in the sleep state within the collection time length, it is determined that the charging pile is in the sleep state.

[0069] See also Figure 3 , Figure 3 This is a schematic block diagram of an electronic device provided in one embodiment of the present application. Figure 3 The electronic device 300 in the embodiment shown may include: one or more processors 301, one or more input devices 302, one or more output devices 303, and one or more memories 304. The processors 301, input devices 302, output devices 303, and memories 304 communicate with each other via a communication bus 305. The memory 304 is used to store computer programs, which include program instructions. The processor 301 is used to execute the program instructions stored in the memory 304. The processor 301 is configured to call the program instructions to execute the functions of the modules in the above-mentioned device embodiments, such as Figure 2 The functions of the data acquisition module 21, the first judgment module 22 and the second judgment module 23 are shown.

[0070] It should be understood that in the embodiment of the present application, the processor 301 may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc.

[0071] The input device 302 may include a touchpad, a fingerprint collection sensor (for collecting user fingerprint information and fingerprint direction information), a microphone, etc. The output device 303 may include a display (LCD, etc.), a speaker, etc.

[0072] The memory 304 may include a read-only memory and a random access memory, and provides instructions and data to the processor 301. A portion of the memory 304 may also include a nonvolatile random access memory.

[0073] In a specific implementation, the processor 301, input device 302, and output device 303 described in the embodiment of the present application can execute the implementation method described in the insulation monitoring method provided in the embodiment of the present application, and can also execute the implementation method of the electronic device described in the embodiment of the present application, which will not be repeated here.

[0074] In another embodiment of the present application, a computer-readable storage medium is provided. The computer-readable storage medium stores a computer program. The computer program includes program instructions. When the program instructions are executed by a processor, all or part of the process of the method in the above embodiment is implemented. The computer program can also be used to instruct related hardware to complete the process. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by the processor, the steps of each of the above method embodiments are implemented. The computer program includes computer program code, which can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium can include: any entity or device capable of carrying computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal and software distribution medium.

[0075] The computer-readable storage medium can be an internal storage unit of the electronic device in any of the aforementioned embodiments, such as a hard disk or memory of the electronic device. The computer-readable storage medium can also be an external storage device of the electronic device, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) card, a flash memory card, etc. Furthermore, the computer-readable storage medium can include both an internal storage unit of the electronic device and an external storage device. The computer-readable storage medium is used to store computer programs and other programs and data required by the electronic device. The computer-readable storage medium can also be used to temporarily store data that has been output or is about to be output.

[0076] An embodiment of the present application provides a computer program product, which includes computer-executable instructions or a computer program, and the computer-executable instructions or computer program are stored in a computer-readable storage medium. A processor of an electronic device reads the computer-executable instructions from the computer-readable storage medium, and the processor executes the computer-executable instructions, so that the electronic device performs the insulation monitoring method described above in the embodiment of the present application.

[0077] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the composition and steps of each example have been generally described in terms of function in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0078] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the electronic devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0079] In the several embodiments provided in this application, it should be understood that the disclosed electronic devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of units is merely a logical functional division, and other division methods may be used in actual implementation. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface or unit, or may be an electrical, mechanical, or other form of connection.

[0080] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the embodiments of the present application.

[0081] The above are only specific embodiments of the present application, but the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and such modifications or substitutions should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. An insulation monitoring method, characterized in that: include: Obtaining the working status and environmental parameters of the charging pile, wherein the working status includes a charging state or a dormant state; In response to the charging pile being in a charging state, determining a first window threshold set based on a first charging parameter and the environmental parameter, the first charging parameter being a charging parameter of the charging pile in a current working cycle, the first window threshold set including a first number of insulation monitoring window thresholds; and performing insulation monitoring on the charging pile based on the first window threshold set; In response to the charging pile being in a dormant state, a second window threshold set is determined based on a second charging parameter and the environmental parameter, the second charging parameter being the charging parameter of the charging pile in the previous working cycle, the second window threshold set including a second number of insulation monitoring window thresholds, the first number being greater than the second number; insulation monitoring is performed on the charging pile according to the second window threshold set.

2. The insulation monitoring method according to claim 1, wherein: The time windows of the insulation monitoring window thresholds in the first window threshold set are different, and the time windows of the insulation monitoring window thresholds in the second window threshold set are different.

3. The insulation monitoring method according to claim 1, wherein: The first charging parameter includes a plurality of charging parameters, and the environmental parameter includes a plurality of environmental parameters; The determining of the first window threshold set according to the first charging parameter and the environmental parameter includes: If the first target charging parameter is greater than the charging threshold corresponding to the first target charging parameter, the weight value corresponding to the first target charging parameter is marked as a first charging weight, and the first target charging parameter is a charging parameter in the first charging parameter; if the first target charging parameter is less than or equal to the charging threshold corresponding to the first target charging parameter, the weight value corresponding to the first target charging parameter is marked as a second charging weight, and the first charging weight is greater than the second charging weight; If the first target environmental parameter is greater than the environmental threshold corresponding to the first target environmental parameter, the weight value corresponding to the first target environmental parameter is marked as a first environmental weight, and the first target environmental parameter is an environmental parameter among multiple environmental parameters; if the first target environmental parameter is less than or equal to the environmental threshold corresponding to the first target environmental parameter, the weight value corresponding to the first target environmental parameter is marked as a second environmental weight, and the first environmental weight is greater than the second environmental weight; Calculating an average of all first charging weights, all second charging weights, all first environment charging weights, and all second environment charging weights as a first target weight; Each insulation monitoring window threshold in the target window threshold set is multiplied by the first target weight to obtain a first window threshold set.

4. The insulation monitoring method according to claim 3, characterized in that: The second charging parameter includes a plurality of charging parameters, and the environmental parameter includes a plurality of environmental parameters; The determining of the second window threshold set according to the second charging parameter and the environmental parameter includes: If the second target charging parameter is greater than the charging threshold corresponding to the second target charging parameter, the weight value corresponding to the second target charging parameter is marked as a third charging weight, where the second target charging parameter is a charging parameter in the first charging parameter; if the second target charging parameter is less than or equal to the charging threshold corresponding to the second target charging parameter, the weight value corresponding to the second target charging parameter is marked as zero; If the second target environmental parameter is greater than the environmental threshold corresponding to the second target environmental parameter, the weight value corresponding to the second target environmental parameter is marked as a fourth environmental weight, where the second target environmental parameter is an environmental parameter among the multiple environmental parameters; if the second target environmental parameter is less than or equal to the environmental threshold corresponding to the first target environmental parameter, the weight value corresponding to the first target environmental parameter is recorded as zero; Calculate the average of all third weights and all fourth weights as the second target weight; Each insulation monitoring window threshold value in the target window threshold value set is multiplied by the second target weight to obtain a second window threshold value set.

5. The insulation monitoring method according to claim 1, wherein: The first window threshold set includes multiple insulation monitoring window thresholds, and the time windows of the insulation monitoring window thresholds are different; Performing insulation monitoring on the charging pile according to the first window threshold set includes: Obtaining the insulation resistance value of the charging pile; The insulation resistance value is compared with each insulation monitoring window threshold in the first window threshold set to obtain multiple comparison results, and insulation monitoring is performed on the charging pile according to the multiple comparison results.

6. The insulation monitoring method according to claim 5, characterized in that: The first window threshold value set includes a first insulation monitoring window threshold, a second insulation monitoring window threshold and a third insulation monitoring window threshold; the time window corresponding to the first insulation monitoring window threshold is smaller than the time window corresponding to the second insulation monitoring window threshold, and the time window corresponding to the second insulation monitoring window threshold is smaller than the time window corresponding to the third insulation monitoring window threshold; The insulation resistance value is compared with each insulation monitoring window threshold value in the first window threshold value set to obtain multiple comparison results, including: If the insulation resistance value is less than the first insulation monitoring window threshold, it is determined that the charging pile is in a transient insulation fault state; If the insulation resistance value is less than the second insulation monitoring window threshold, it is determined that the charging pile is in a periodic insulation abnormal state; If the insulation resistance value is less than the third insulation monitoring window threshold, it is determined that the charging pile is in an insulation degradation state.

7. The insulation monitoring method according to claim 1, wherein: Get the working status of the charging pile, including: In response to the working time length of the charging pile in the charging state being greater than or equal to the dormant time length of the charging pile in the dormant state within the collected time length, determining that the charging pile is in the charging state; In response to the working time length of the charging pile in the charging state being less than the sleep time length of the charging pile in the sleep state within the collection time length, it is determined that the charging pile is in the sleep state.

8. An insulation monitoring system, characterized in that: include: A data acquisition module is used to obtain the working status and environmental parameters of the charging pile, wherein the working status includes charging status or dormant status; a first judgment module, configured to determine, in response to the charging pile being in a charging state, a first window threshold set according to a first charging parameter and the environmental parameter, wherein the first charging parameter is a charging parameter of the charging pile in a current working cycle, and the first window threshold set includes a first number of insulation monitoring window thresholds; performing insulation monitoring on the charging pile according to the first window threshold set; A second judgment module is used to determine a second window threshold set in response to the charging pile being in a dormant state according to a second charging parameter and the environmental parameter, the second charging parameter being a charging parameter of the charging pile in the previous working cycle, the second window threshold set including a second number of insulation monitoring window thresholds, the first number being greater than the second number; and perform insulation monitoring on the charging pile according to the second window threshold set.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and running on the processor, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 7 are implemented.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 7 are implemented.

Images