Charging pile overcurrent fault alarm method, device and storage medium

Abstract

The present application relates to the technical field of charging piles, and provides a charging pile overcurrent fault alarm method, device and storage medium. The fault alarm method includes: determining the user current limit value based on the charging configuration information corresponding to this charging; determining the dynamic current limit value used this time based on the device current limit value and the user current limit value of the target charging pile; when the dynamic current limit value is greater than the balanced current limit value and the output current is monitored to be greater than or equal to the balanced current limit value, determining whether the output current is less than the dynamic current limit value; when the output current is less than the dynamic current limit value, start recording the waiting time until the output current is less than the balanced current limit value; when the waiting time is greater than or equal to the waiting time threshold, determine that the target charging pile has an overcurrent fault. By adopting the above technical solution, the overcurrent scenario can be distinguished by the dynamic current limit value and the balanced current limit value, so that different alarm triggering strategies can be adopted for different scenarios, so that the accuracy of the current limit alarm can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of charging piles, and in particular to a charging pile overcurrent fault alarm method, device and storage medium. Background Art

[0002] Charging pile technology has developed rapidly in recent years, especially in the context of the popularization of electric vehicles, the performance and reliability of charging piles have become key factors. As the number of charging piles increases, it becomes particularly important to ensure the safety and stability of the current during the charging process.

[0003] In the related art, in order to deal with the overcurrent problem of the charging pile, a fixed current threshold is usually set, and the output current of the charging pile is monitored during the charging process. When the output current is detected to be greater than the preset current threshold, an overcurrent alarm is output.

[0004] However, although the overcurrent protection method using a single fixed threshold in the related art is simple and effective, it lacks flexibility in different usage scenarios and cannot adapt to various charging needs, which leads to inaccurate overcurrent fault alarm results. Summary of the invention

[0005] In order to help improve the accuracy of current limiting alarm, the present application provides a charging pile overcurrent fault alarm method, device and storage medium.

[0006] In the first aspect, the present application provides a charging pile overcurrent fault alarm method, which adopts the following technical solution:

[0007] A charging pile overcurrent fault alarm method, the method comprising:

[0008] When it is detected that the target charging pile is in a charging state, the charging configuration information corresponding to this charging is obtained;

[0009] Determine a user current limit value based on the charging configuration information;

[0010] Determine the dynamic current limit value used this time based on the device current limit value of the target charging pile and the user current limit value;

[0011] Determining whether the dynamic current limit value is greater than a balanced current limit value, the balanced current limit value being predetermined;

[0012] When the dynamic current limit value is greater than the balanced current limit value, monitoring whether the output current of the target charging gun used for this charging is greater than or equal to the balanced current limit value;

[0013] In the case where it is monitored that the output current is greater than or equal to the balanced current limiting value, determining whether the output current is less than the dynamic current limiting value;

[0014] When the output current is less than the dynamic current limiting value, start recording the waiting time until the output current is less than the balanced current limiting value;

[0015] Determine whether the waiting time is greater than or equal to a waiting time threshold;

[0016] When the waiting time is greater than or equal to the waiting time threshold, it is determined that an overcurrent fault exists in the target charging pile.

[0017] By adopting the above technical solution, it can help solve the problem of inaccurate alarms that are easily caused by a single overcurrent monitoring strategy. By distinguishing overcurrent scenarios through dynamic current limiting values ​​and balanced current limiting values, different alarm triggering strategies are adopted for different scenarios. This can help improve the accuracy of current limiting alarms.

[0018] Optionally, the device current limiting value is a factory setting value, and determining the dynamic current limiting value used this time based on the device current limiting value of the target charging pile and the user current limiting value includes:

[0019] Determine whether the user current limit value is greater than the factory setting value;

[0020] When the user current limit value is greater than the factory setting value, determining the current limit adjustment parameter corresponding to the target charging pile based on the device status of the target charging pile;

[0021] Adjust the factory setting value based on the current limiting adjustment parameter to obtain an adjusted device current limiting value;

[0022] Determine whether the user current limit value is greater than the adjusted device current limit value;

[0023] When the user current limiting value is not greater than the adjusted device current limiting value, the user current limiting value is determined as the dynamic current limiting value.

[0024] By adopting the above technical solution, when the user current limit value is greater than the factory setting value, the factory setting value can be adjusted in combination with the device status of the target charging pile, and when the user current limit value is not greater than the adjusted device current limit value, the user current limit value can be determined as a dynamic current limit value. This can help to meet the user's needs as much as possible in combination with the actual status of the device, and thus can help to improve the user experience.

[0025] Optionally, when the user current limiting value is not greater than the adjusted device current limiting value, determining the user current limiting value as the dynamic current limiting value includes:

[0026] When the user current limit value is not greater than the adjusted device current limit value, determining whether the maximum current value corresponding to the target charging gun is greater than or equal to the user current limit value, the maximum current value being preset;

[0027] When the maximum current value is greater than or equal to the user current limiting value, the user current limiting value is determined as the dynamic current limiting value.

[0028] By adopting the above technical solution, when the user current limiting value is not greater than the adjusted device current limiting value, it can be further determined whether the maximum current value corresponding to the target charging gun is greater than or equal to the user current limiting value, and when the maximum current value is greater than or equal to the user current limiting value, the user current limiting value can be determined as the dynamic current limiting value. This can help avoid damage to the charging gun due to possible excessive current, thereby improving the safety of the charging process.

[0029] Optionally, after determining whether the maximum current value corresponding to the target charging gun is greater than or equal to the adjusted device current limit value, the method further includes:

[0030] In the case where the maximum current is less than the user current limit value, determining whether there is an available charging gun whose maximum current value is greater than or equal to the user current limit value among the charging guns that are not in use in the target charging pile;

[0031] In the case where the available charging gun exists, charging gun switching prompt information corresponding to the available charging gun is output to prompt the user to use the available charging gun for charging.

[0032] By adopting the above technical solution, when the maximum current of the target charging gun is less than the user's current limit value, it can be further determined whether there is an available charging gun in the target charging pile that is not in use and whose maximum current is greater than or equal to the user's current limit value, and when it is determined that there is an available charging gun, the user is prompted to use the available charging gun. This can meet the user's needs as much as possible, thereby improving the user experience while ensuring safety.

[0033] Optionally, determining the current limiting adjustment parameter corresponding to the target charging pile based on the device state of the target charging pile includes:

[0034] Determining a first adjustment parameter based on the number of charging guns in use of the target charging pile;

[0035] Determining a second adjustment parameter based on the service life of the target charging pile, wherein the service life is predetermined;

[0036] The current limiting adjustment parameter is determined based on the first adjustment parameter and the second adjustment parameter.

[0037] By adopting the above technical solution, the current limiting adjustment parameter can be comprehensively determined based on the number of charging guns in use of the charging pile and the service life of the charging pile, which can help improve the accuracy of the current limiting adjustment parameter finally determined.

[0038] Optionally, the method further includes:

[0039] In response to the balanced current update instruction, obtaining an overall actual load value of the target charging station where the target charging pile is located;

[0040] The balanced current limit value is updated based on the overall actual load value and the overall load limit value of the target charging station.

[0041] By adopting the above technical solution, when a balancing current update instruction is received, the balancing current value can be updated based on the overall actual load value and the overall load limit of the target charging station. In this way, the balancing current value can be automatically updated, so that the balancing current value matches the actual load and load limit of the target charging station, which can help to improve the accuracy of the balancing current value.

[0042] Optionally, the method further includes:

[0043] Monitoring whether each charging pile in the target charging station is in use;

[0044] When a change in the usage status of the charging pile is detected, generating the balancing current update instruction;

[0045] and / or,

[0046] Monitoring the change of the electricity cost of the target charging station;

[0047] When the change range of the electricity cost exceeds a preset change range threshold, the balancing current update instruction is generated.

[0048] By adopting the above technical solution, a balancing current update instruction can be generated when the working state of the charging pile changes, which can help match the balancing current limit value with the actual usage of the charging pile in the charging station, thereby improving the accuracy of the balancing current value.

[0049] Optionally, after determining whether the output current is less than the dynamic current limiting value, the method further includes:

[0050] When the output current is greater than or equal to the dynamic current limiting value, it is determined that an overcurrent fault exists in the target charging pile.

[0051] In a second aspect, the present application provides an electronic device, which adopts the following technical solution:

[0052] An electronic device, comprising:

[0053] at least one processor;

[0054] Memory;

[0055] At least one application, wherein at least one application is stored in a memory and configured to be executed by at least one processor, and the at least one application is configured to: execute any one of the charging pile overcurrent fault alarm methods provided in the first aspect.

[0056] In a third aspect, the present application provides a computer-readable storage medium, which adopts the following technical solution:

[0057] A computer-readable storage medium having a computer program stored thereon, characterized in that when the computer program is executed in a computer, the computer is caused to execute any one of the charging pile overcurrent fault alarm methods provided in the first aspect.

[0058] In summary, the present application includes at least one of the following beneficial technical effects:

[0059] 1. It can help solve the problem of inaccurate alarms caused by a single overcurrent monitoring strategy. By distinguishing overcurrent scenarios through dynamic current limiting values ​​and balanced current limiting values, different alarm triggering strategies are adopted for different scenarios, which can help improve the accuracy of current limiting alarms.

[0060] 2. Since the dynamic current limit value is dynamically determined by combining the user current limit value and the device limit value, rather than a fixed setting, the dynamic current limit value can better reflect the actual situation of this charging, thereby further improving the accuracy of the overcurrent fault alarm. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] Figure 1 It is a flow chart of a charging pile overcurrent fault alarm method provided in an embodiment of the present application;

[0062] Figure 2 It is a flow chart of a method for determining a dynamic current limiting value provided in an embodiment of the present application;

[0063] Figure 3 It is a flow chart of another method for determining a dynamic current limiting value provided in an embodiment of the present application;

[0064] Figure 4 It is a flow chart of a balanced current limiting value updating method provided in an embodiment of the present application;

[0065] Figure 5 It is a structural schematic diagram of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0066] In order to make the purpose, technical solutions and advantages of this application more clear, the following Figure 1-5 It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0067] The present application embodiment discloses a charging pile overcurrent fault alarm method. Figure 1 , the charging pile overcurrent fault alarm method includes:

[0068] Step 101, when it is detected that the target charging pile is in a charging state, the charging configuration information corresponding to this charging is obtained.

[0069] The charging configuration information is used to indicate information related to the vehicle and / or user being charged. Specifically, the charging configuration information includes but is not limited to the protocol information of the charging vehicle, the model information of the charging vehicle and the interface used this time, the user's current limiting configuration, and at least one type of information directly related to current limiting.

[0070] Specifically, the protocol information and vehicle model of the charging vehicle may be obtained through information interaction between the charging pile and the charging vehicle, or may be pre-set by the user in the background.

[0071] The interface used this time can be set according to the charging gun used this time. Since the fast charging interface and the slow charging interface use different charging guns, the interface used this time can be determined based on the charging gun used this time.

[0072] The user's current limit configuration is pre-set by the user. For example, the user can configure the current limit value when initiating a charging request. For example, the user can pre-configure a default current limit value to be used in subsequent charging processes.

[0073] Furthermore, the charging configuration information may also include information indirectly related to current limiting, such as the user's expected vehicle usage time and the remaining power of a fully charged vehicle. Since this information may affect the requirements for the charging rate, and the charging current is directly related to the charging rate, in order to help improve the user's charging experience, these may be taken into consideration in the charging configuration information.

[0074] Step 102: Determine a user current limit value based on charging configuration information.

[0075] Optionally, the charging configuration information includes a current limiting configuration of the user, and accordingly, determining the user current limiting value based on the charging configuration information includes: determining the current limiting configuration as the user current limiting value.

[0076] Furthermore, the charging configuration information also includes vehicle information. Accordingly, determining the user current limit value based on the charging configuration information includes: determining a first current limit value based on the vehicle information; determining a second current limit value based on the current limit configuration; and determining the smaller of the first current limit value and the second current limit value as the user current limit value. The vehicle information may specifically include the vehicle model, the interface used, protocol information, etc., and the correspondence between the vehicle and the current limit value is preset. Furthermore, in the case where the vehicle information includes multiple types, the current limit values ​​corresponding to each vehicle information are determined respectively, and the minimum value of the current limit values ​​corresponding to each vehicle information is determined as the first current limit value.

[0077] Step 103: Determine the dynamic current limit value used this time based on the device current limit value of the target charging pile and the user current limit value.

[0078] The device current limit value is used to indicate the current output limit of the charging pile. Specifically, the device current limit value generally adopts the factory setting value.

[0079] Furthermore, considering that the components of the charging pile will age and be replaced during use, the fluctuation of the equipment performance is derived. Therefore, the factory setting value can be adjusted in combination with the life of the charging pile to obtain the equipment current limit value used this time, which can help improve the accuracy of the equipment current limit value determination. Among them, the life of the charging pile can be determined in combination with at least one life influencing factor such as the actual use time of the charging pile and the replacement of components.

[0080] In one example, the factory setting value is the device current limit value corresponding to the reference life of the charging pile (for example: 80%). At this time, when the device life is greater than the reference life, the actual device life value used may be greater than the factory setting value, and when the device life is less than the reference life, the actual life value used may be less than the factory setting value.

[0081] In another example, the factory setting value is the device current limit value corresponding to the minimum service life of the charging pile. At this time, the actual device life value used can be appropriately increased based on the factory setting value.

[0082] Optionally, the dynamic current limiting value used this time is determined based on the device current limiting value and the user current limiting value of the target charging pile, including: determining the smaller one of the device current limiting value and the user current limiting value as the dynamic current limiting value.

[0083] Step 104, determining whether the dynamic current limit value is greater than the balanced current limit value.

[0084] Specifically, since the actual power transmission capacity of the charging pile may also be affected by factors such as the installation environment of the charging pile, various operating strategies of the charging station where it is located, and the use of other charging piles in the charging station, the balanced current limit value is determined in the embodiment of the present application based on these influencing factors.

[0085] Specifically, when the balanced current limiting value needs to consider multiple factors, the minimum value of the current limiting values ​​corresponding to the various factors is determined as the balanced current limiting value.

[0086] In an example, if the three charging profiles Txprofile, TXdefaultProfile, and TxMaxProfile obtained from the OCPP platform have limits of 48A, 20A, and 18A respectively during this period, and the current limit value of the local site balancing function is 10A, the balancing current limit value is determined to be 10A.

[0087] Step 105 , when the dynamic current limit value is greater than the balanced current limit value, monitoring whether the output current of the target charging gun used for this charging is greater than or equal to the balanced current limit value is performed.

[0088] Optionally, when the dynamic current limit value is less than or equal to the balanced current limit value, the output current of the target charging gun is directly monitored to see whether it is greater than or equal to the dynamic current limit value; when the output current is detected to be greater than or equal to the dynamic current limit value, it is determined that the target charging pile has an overcurrent fault. This can help ensure the safety of the charging process.

[0089] Step 106: When it is detected that the output current is greater than or equal to the balanced current limiting value, determine whether the output current is less than the dynamic current limiting value.

[0090] Step 107 , when the output current is less than the dynamic current limit value, start recording the waiting time until the output current is less than the balanced current limit value.

[0091] The waiting time is used to record the continuous time when the output current is less than the dynamic current limit value and greater than or equal to the balanced current limit value. Specifically, when the output current is less than the dynamic current limit value, it also includes: determining whether the output current is less than the balanced current value; when the output current is less than the balanced current value, the waiting time is reset to zero, so that the next time it is determined that the output current is less than the dynamic current limit value, the waiting time can be calculated again.

[0092] Optionally, when the output current is greater than or equal to the dynamic current limit, it is determined that the target charging pile has an overcurrent fault, which can help ensure the safety of the charging process.

[0093] Step 108: Determine whether the waiting time is greater than or equal to a waiting time threshold.

[0094] The waiting time threshold is set according to actual conditions, for example, the waiting time threshold is 30S.

[0095] Step 109: When the waiting time is greater than or equal to the waiting time threshold, it is determined that an overcurrent fault exists in the target charging pile.

[0096] When the waiting time is less than the waiting time threshold, the waiting time is continuously monitored until the waiting time is greater than or equal to the waiting time threshold or the waiting time recording stops.

[0097] The implementation principle of a charging pile overcurrent fault alarm method in an embodiment of the present application is: when it is detected that the target charging pile is in a charging state, the charging configuration information corresponding to this charging is obtained; the user current limit value is determined based on the charging configuration information; the dynamic current limit value used this time is determined based on the device current limit value and the user current limit value of the target charging pile; it is determined whether the dynamic current limit value is greater than the balanced current limit value, and the balanced current limit value is predetermined; when the dynamic current limit value is greater than the balanced current limit value, the output current of the target charging gun used for this charging is greater than or equal to the balanced current limit value. Monitor; when it is monitored that the output current is greater than or equal to the balanced current limit value, determine whether the output current is less than the dynamic current limit value; when the output current is less than the dynamic current limit value, start recording the waiting time until the output current is less than the balanced current limit value; determine whether the waiting time is greater than or equal to the waiting time threshold; when the waiting time is greater than or equal to the waiting time threshold, determine that the target charging pile has an overcurrent fault. By adopting the above technical scheme, the dynamic current limiting value can be determined in combination with the user current limiting value and the device current limiting value. When the dynamic current limiting value is greater than the predetermined balanced current limiting value, in the process of current limiting judgment, the continuous time that the output current is between the balanced current value and the dynamic current limiting value is counted through the waiting time. When the waiting time is greater than or equal to the waiting time threshold, it is determined that the target charging pile has an overcurrent fault. This can help solve the problem of inaccurate alarms that are easily caused by a single overcurrent monitoring strategy. The overcurrent scenarios are distinguished by the dynamic current limiting value and the balanced current limiting value, and different alarm triggering strategies are adopted for different scenarios. This can help improve the accuracy of the current limiting alarm.

[0098] In addition, since the dynamic current limit value is dynamically determined by combining the user current limit value and the device limit value, rather than being fixed, the dynamic current limit value can better reflect the actual situation of this charging, thereby further improving the accuracy of the overcurrent fault alarm.

[0099] In some embodiments, the device current limit value is a factory setting value. In another example, the factory setting value is a device current limit value corresponding to the minimum service life of the charging pile.

[0100] Accordingly, reference Figure 2 Step 103, determining the dynamic current limit value used this time based on the device current limit value of the target charging pile and the user current limit value, including the following steps:

[0101] Step 201, determine whether the user current limit value is greater than the factory setting value.

[0102] Step 202: When the user current limit value is greater than the factory setting value, determine the current limit adjustment parameter corresponding to the target charging pile based on the device status of the target charging pile.

[0103] The device status may include at least one factor that may affect the current limiting value, such as the service life, usage, working hours, and current temperature of the charging pile.

[0104] Specifically, when the user current limit value is greater than the device current limit value, it means that the factory current limit value of the target charging pile cannot meet the user's usage requirements, and the factory current limit value of the target charging pile is generally low. Therefore, when it is determined that the current limiting state of the target charging pile cannot meet the user's usage requirements, the factory current limit value can be appropriately adjusted in combination with the device status of the charging pile.

[0105] In one example, the current limiting adjustment parameter may be represented by a numerical value, for example, the better the device status is, the larger the current limiting adjustment parameter is.

[0106] Optionally, the current limiting adjustment parameter corresponding to the target charging pile is determined based on the device state of the target charging pile, including: determining the current limiting adjustment parameter corresponding to the target charging pile based on the state gap between the device state and a preset reference state. The corresponding relationship between the state gap and the current limiting adjustment parameter is preset. In one example, the device state includes the service life, and accordingly, the current service life of the charging pile is 90%, the reference state is 30%, and the state gap is 60%.

[0107] Furthermore, the current limiting adjustment parameter can be comprehensively determined in combination with multiple different device states. At this time, the adjustment parameters corresponding to each device state can be determined separately; the current limiting adjustment parameter is finally determined based on the adjustment parameters corresponding to each device state, for example: the minimum value of the adjustment parameter corresponding to each device state is determined as the current limiting adjustment parameter, or the average value of the adjustment parameter corresponding to each device state can also be determined as the current limiting value adjustment parameter.

[0108] In one example, the current limiting adjustment parameter corresponding to the target charging pile is determined based on the device state of the target charging pile, including: determining a first adjustment parameter based on the number of charging guns in use of the target charging pile; determining a second adjustment parameter based on the service life of the target charging pile; and determining the current limiting adjustment parameter based on the first adjustment parameter and the second adjustment parameter. In actual implementation, the charging pile may include multiple charging guns, and since the maximum output current of the charging pile as a whole is limited, the simultaneous use of different charging guns will cause the charging pile to be shunted. Therefore, the current limiting adjustment parameter is determined in combination with the number of charging guns in use of the charging pile and the service life of the charging pile, which can help improve the accuracy of the current limiting adjustment parameter finally determined.

[0109] Step 203, adjusting the factory setting value based on the current limiting adjustment parameter to obtain an adjusted device current limiting value.

[0110] Optionally, the current limiting value of the device after adjustment is not less than the factory setting value, so that the current limiting value adjustment process can help meet user needs.

[0111] In one example, the current limiting adjustment parameter is represented by a value within a preset interval. At this time, the factory setting value is adjusted based on the current limiting adjustment parameter, including: determining the product of the current limiting adjustment parameter and the factory setting value as the adjusted device current limiting value. In actual implementation, the preset interval range can be a numerical range slightly greater than 1, which can be set in combination with actual conditions. For example: the preset interval range is [1,1.2].

[0112] Step 204, determining whether the user current limit value is greater than the adjusted device current limit value.

[0113] Step 205: When the user current limit value is not greater than the adjusted device current limit value, the user current limit value is determined as the dynamic current limit value.

[0114] Optionally, when the user current limiting value is greater than the adjusted device current limiting value, the adjusted device current limiting value or the factory setting value may be determined as the dynamic current limiting value.

[0115] In the above technical solution, when the user current limit value is greater than the factory setting value, the factory setting value can be adjusted in combination with the device status of the target charging pile, and when the user current limit value is not greater than the adjusted device current limit value, the user current limit value is determined as a dynamic current limit value. This can help to meet the user's needs as much as possible in combination with the actual status of the device, and thus can help to improve the user experience.

[0116] For further reference, Figure 3 In the above step 205, when the user current limit value is not greater than the adjusted device current limit value, the user current limit value is determined as a dynamic current limit value, including:

[0117] Step 301: When the user current limit value is not greater than the adjusted device current limit value, determine whether the maximum current value corresponding to the target charging gun is greater than or equal to the user current limit value.

[0118] Specifically, the maximum current value of the target charging gun may be preset during the process of the charging pile leaving the factory, and may be set according to the maximum current that the charging gun line connecting the charging gun and the charging pile body can withstand.

[0119] In an example, before determining whether the maximum current value corresponding to the target charging gun is greater than or equal to the adjusted device current limiting value, it is necessary to determine whether the maximum current value of the charging gun can be obtained; when the maximum current value of the charging gun can be obtained, determine whether the maximum current value corresponding to the target charging gun is greater than or equal to the adjusted device current limiting value; when the maximum current value corresponding to the charging gun cannot be obtained, it means that the user has considered the maximum current value of the charging gun when configuring the charging configuration information. At this time, the user current limiting value can be directly determined as the dynamic current limiting value.

[0120] Step 302: when the maximum current value is greater than or equal to the user current limiting value, determine the user current limiting value as the dynamic current limiting value.

[0121] Specifically, if the maximum current value is greater than or equal to the adjusted device current limiting value, it means that the charging gun will not be damaged even if the user current limiting value is used for charging in time. Therefore, the user current limiting value can be determined as the dynamic current limiting value.

[0122] Optionally, when the maximum current value is less than the user current limit value, the factory setting value can be directly determined as the dynamic current limit value, which can help prevent the charging gun from being damaged due to possible excessive current.

[0123] In the above technical solution, when the user current limiting value is not greater than the adjusted device current limiting value, it is further determined whether the maximum current value corresponding to the target charging gun is greater than or equal to the user current limiting value, and when the maximum current value is greater than or equal to the user current limiting value, the user current limiting value is determined as the dynamic current limiting value. This can help avoid damage to the charging gun due to possible excessive current, thereby improving the safety of the charging process.

[0124] For further information, please refer to Figure 3 Step 301, when the user current limit value is not greater than the adjusted device current limit value, after determining whether the maximum current value corresponding to the target charging gun is greater than or equal to the user current limit value, further includes:

[0125] Step 303, when the maximum current is less than the user current limit value, determine whether there is an available charging gun whose corresponding maximum current value is greater than or equal to the user current limit value among the charging guns that are not in use in the target charging pile.

[0126] Among them, being in use means: it can be used to charge the target vehicle.

[0127] Specifically, since the same charging pile may include more than two charging guns, and the maximum current values ​​corresponding to different charging guns may be different, when the target charging gun cannot meet the user's needs, it can be further determined whether there are idle charging guns that can meet the user's usage needs.

[0128] Step 304: if there is an available charging gun, output charging gun switching prompt information corresponding to the available charging gun to prompt the user to use the available charging gun for charging.

[0129] Specifically, the user may be prompted to replace the available charging gun through voice announcement and / or display screen display, for example: voice announcement please replace the charging gun using xx (the logo of the available charging gun).

[0130] Optionally, when there is no available charging gun, the factory setting value can be directly determined as the dynamic current limiting value, which can help prevent the charging gun from being damaged due to possible excessive current.

[0131] In the above technical solution, when the maximum current of the target charging gun is less than the user's current limit value, it is possible to further determine whether there is an available charging gun in the target charging pile that is not in use and whose maximum current is greater than or equal to the user's current limit value, and when it is determined that there is an available charging gun, the user is prompted to use the available charging gun. This can meet the user's needs as much as possible, thereby improving the user experience while ensuring safety.

[0132] In some embodiments, reference Figure 4 The charging pile overcurrent fault alarm method provided in the embodiment of the present application also includes the following steps:

[0133] Step 401, in response to a balanced current update instruction, obtaining an overall actual load value of a target charging station where a target charging pile is located.

[0134] The balanced current update instruction is used to instruct to update the balanced current limit value.

[0135] The overall actual load value is used to indicate the total output power of the charging station, or the total input power. In actual implementation, the actual load situation can be measured in real time, for example, by adding the output power of each charging pile in use.

[0136] Optionally, the balanced current limiting update instruction may be generated according to a preset generation rule. The specific generation rules include but are not limited to the following:

[0137] The first method is to monitor whether each charging pile in the target charging station is in use; when a change in the use status of the charging pile is detected, a balancing current update instruction is generated.

[0138] The usage status is used to indicate whether the charging pile is in use. Specifically, the change in usage status refers to the charging pile switching from the in-use state to the unused state, or the charging pile switching from the unused state to the in-use state.

[0139] Specifically, since the maximum power that each charging station can provide is fixed, the number of charging piles in working state will affect the power that can actually be allocated to each charging pile. Based on this, in this embodiment, when the working state of the charging pile changes, a balanced current update instruction is generated, which can help to match the balanced current limit value with the actual usage of the charging piles in the charging station, thereby improving the accuracy of the balanced current value.

[0140] The second method is to monitor the change of the electricity cost of the target charging station; when the change of the electricity cost exceeds a preset change threshold, a balancing current update instruction is generated.

[0141] Specifically, since the electricity cost will affect the operating cost of the charging station, in this embodiment, when the electricity cost of the charging pile changes greatly, a balanced current update instruction is generated, so that the balanced current limit value can match the electricity cost, which can help control the electricity cost of the target charging station through the balanced current limit value.

[0142] In one example, the electricity cost can be determined based on the electricity consumption. For example, when the city electricity adopts a tiered electricity price, the electricity cost may continue to increase as the electricity consumption increases per unit time. For another example, when the city electricity adopts peak and valley electricity prices, there are differences in electricity costs in different time periods.

[0143] In another example, in addition to the mains electricity, the charging pile can also be powered by an energy storage device. In this case, when calculating the electricity cost, it is necessary to consider not only the cost of the mains electricity but also the storage capacity of the energy storage device and the storage cost of the energy storage device. This can help improve the accuracy of the electricity cost calculation.

[0144] Step 402: Update the balanced current limit value based on the overall actual load value and the overall load limit value of the target charging station.

[0145] Among them, the overall load limit is used to indicate the restriction on the overall load of the charging station. In actual implementation, the overall load limit will be dynamically determined according to factors such as the operating strategy of the charging station and the electricity cost. For example: when the electricity cost is low, the overall load limit will be close to the upper limit of the load that the system can bear; and when the electricity cost is high, the overall load limit will be appropriately reduced due to operating cost considerations. In actual implementation, the method for determining the overall load limit can be set according to the actual needs of different charging stations.

[0146] Optionally, the balancing current value is updated based on the overall actual load value and the overall load limit of the target charging station, including: determining the difference between the overall load limit and the overall actual load value as the maximum available load value; determining the balancing current value based on the maximum available load value and the number of charging piles that are not in use.

[0147] In one example, determining the balanced current value based on the maximum available load value and the number of charging piles not in use includes: determining the ratio of the maximum available load value to the number of charging piles not in use as the average load value; adjusting the average load value based on the balanced adjustment parameter to obtain a balanced load value, the balanced load value is not less than the average load value; and determining the balanced current value based on the balanced load value. The corresponding relationship between the load value and the current value is preset.

[0148] In one instance, the balancing adjustment parameter is a number slightly greater than 1, for example, the balancing adjustment parameter is a value between 1 and 1.2. Accordingly, the average load value is adjusted based on the balancing adjustment parameter to obtain the balanced load value, including: determining the product of the average load value and the balancing adjustment parameter as the balanced load value.

[0149] In the above technical solution, since the balancing current value can be updated based on the overall actual load value and the overall load limit of the target charging station when the balancing current update instruction is received, the balancing current value can be automatically updated, so that the balancing current value matches the actual load and load limit of the target charging station, which can help to improve the accuracy of the balancing current value.

[0150] The present application also provides an electronic device. Figure 5 As shown, Figure 5 The electronic device 500 shown includes: a processor 501 and a memory 503. The processor 501 and the memory 503 are connected, such as through a bus 502. Optionally, the electronic device 500 may also include a transceiver 504. It should be noted that in actual applications, the transceiver 504 is not limited to one, and the structure of the electronic device 500 does not constitute a limitation on the embodiments of the present application.

[0151] The processor 501 may be a CPU (Central Processing Unit), a general-purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. The processor 501 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.

[0152] The bus 502 may include a path to transmit information between the above components. The bus 502 may be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus. The bus 502 may be divided into an address bus, a data bus, etc. For ease of representation, Figure 5 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0153] The memory 503 may be a ROM (Read Only Memory) or other types of static storage devices that can store static information and instructions, a RAM (Random Access Memory) or other types of dynamic storage devices that can store information and instructions, or an EEPROM (Electrically Erasable Programmable Read Only Memory), a disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store desired program codes in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.

[0154] The memory 503 is used to store the application code for executing the solution of the present application, and the execution is controlled by the processor 501. The processor 501 is used to execute the application code stored in the memory 503 to implement the contents shown in the above method embodiment.

[0155] The electronic devices include, but are not limited to, mobile terminals such as mobile phones, laptop computers, PDAs (personal digital assistants), PADs (tablet computers), etc., and fixed terminals such as digital TVs, desktop computers, etc. It can also be a server terminal, etc. Figure 5 The electronic device shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0156] An embodiment of the present application also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed in a computer, the computer is caused to execute the charging pile overcurrent fault alarm method provided in the above embodiment.

[0157] It should be understood that although the steps in the flowchart of the accompanying drawings are shown in sequence according to the instructions of the arrows, these steps are not necessarily performed in the order indicated by the arrows. Unless otherwise clearly stated in this document, the execution of these steps is not strictly limited in order and can be performed in other orders.

[0158] The above are only some implementation methods of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A charging pile overcurrent fault alarm method, characterized in that: The method comprises: When it is detected that the target charging pile is in a charging state, the charging configuration information corresponding to this charging is obtained, wherein the charging configuration information includes vehicle information and user current limiting configuration; Determining a user current limit value based on the charging configuration information, wherein determining the user current limit value based on the charging configuration information includes: determining a first current limit value based on vehicle information, and determining a second current limit value based on the current limit configuration; and determining a smaller one of the first current limit value and the second current limit value as the user current limit value; Determine whether the user current limit value is greater than the factory setting value; When the user current limit value is greater than the factory setting value, determining the current limit adjustment parameter corresponding to the target charging pile based on the device status of the target charging pile; Adjust the factory setting value based on the current limiting adjustment parameter to obtain an adjusted device current limiting value; Determine whether the user current limit value is greater than the adjusted device current limit value; In a case where the user current limit value is not greater than the adjusted device current limit value, determining the user current limit value as a dynamic current limit value; Determining whether the dynamic current limit value is greater than a balanced current limit value, the balanced current limit value being predetermined; When the dynamic current limit value is greater than the balanced current limit value, monitoring whether the output current of the target charging gun used for this charging is greater than or equal to the balanced current limit value; In the case where it is monitored that the output current is greater than or equal to the balanced current limiting value, determining whether the output current is less than the dynamic current limiting value; When the output current is less than the dynamic current limiting value, start recording the waiting time until the output current is less than the balanced current limiting value; Determine whether the waiting time is greater than or equal to a waiting time threshold; When the waiting time is greater than or equal to the waiting time threshold, determining that an overcurrent fault exists in the target charging pile; The determining the current limiting adjustment parameter corresponding to the target charging pile based on the device state of the target charging pile includes: Determining a first adjustment parameter based on the number of charging guns in use of the target charging pile; Determining a second adjustment parameter based on the service life of the target charging pile, wherein the service life is predetermined based on the actual use time of the charging pile and / or the replacement of components; The current limiting adjustment parameter is determined based on the first adjustment parameter and the second adjustment parameter.

2. The method according to claim 1, characterized in that: The step of determining the user current limiting value as the dynamic current limiting value when the user current limiting value is not greater than the adjusted device current limiting value includes: When the user current limit value is not greater than the adjusted device current limit value, determining whether the maximum current value corresponding to the target charging gun is greater than or equal to the user current limit value, the maximum current value being preset; When the maximum current value is greater than or equal to the user current limiting value, the user current limiting value is determined as the dynamic current limiting value.

3. The method according to claim 2, characterized in that After determining whether the maximum current value corresponding to the target charging gun is greater than or equal to the adjusted device current limit value, the method further includes: In the case where the maximum current is less than the user current limit value, determining whether there is an available charging gun whose maximum current value is greater than or equal to the user current limit value among the charging guns that are not in use in the target charging pile; In the case where the available charging gun exists, charging gun switching prompt information corresponding to the available charging gun is output to prompt the user to use the available charging gun for charging.

4. The method according to claim 1, characterized in that The method further comprises: In response to the balanced current update instruction, obtaining an overall actual load value of the target charging station where the target charging pile is located; The balanced current limit value is updated based on the overall actual load value and the overall load limit value of the target charging station.

5. The method according to claim 4, characterized in that The method further comprises: Monitoring whether each charging pile in the target charging station is in use; When a change in the usage status of the charging pile is detected, generating the balancing current update instruction; and / or, Monitoring the change of the electricity cost of the target charging station; When the change range of the electricity cost exceeds a preset change range threshold, the balancing current update instruction is generated.

6. The method according to claim 1, characterized in that After determining whether the output current is less than the dynamic current limit value, the method further includes: When the output current is greater than or equal to the dynamic current limiting value, it is determined that an overcurrent fault exists in the target charging pile.

7. An electronic device, characterized in that: The electronic device comprises: at least one processor; Memory; At least one application, wherein at least one application is stored in a memory and configured to be executed by at least one processor, and the at least one application is configured to: execute the charging pile overcurrent fault alarm method according to any one of claims 1 to 6.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed in a computer, the computer is caused to execute the charging pile overcurrent fault alarm method according to any one of claims 1 to 6.

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