Charging pile load balance regulation and control method and device, computer equipment and storage medium

Abstract

The invention relates to a charging pile load balance regulation and control method and device, computer equipment and a storage medium. The method comprises the steps that polling pulling is conducted on charging piles according to a preset polling scheme, and the number of output charging piles and current output current are obtained; performing output calculation according to a preset output threshold value and the current output current to obtain a current output limit current; performing regulation and control calculation according to the current output current and the current output limit current to obtain the current issuing current; and performing issuing adjustment according to the current output current, the current issuing current and the current charging mode to obtain a target issuing current. By adopting the method, the optimal distribution of electric power resources can be realized through a dynamic adjustment mechanism, so that the charging pile can operate in a safest and most efficient mode under different loads and charging modes, and through fine adjustment, the influence of current sudden change on the power grid is reduced, namely, the load of the power grid is effectively balanced; the start-stop frequency of the charging gun is effectively reduced, and the service life of equipment is prolonged.

Description

Technical Field

[0001] This application relates to the technical field of charging piles, and particularly to a method, device, computer device, and storage medium for regulating the load balance of charging piles. Background Art

[0002] With the popularization of electric vehicles, the demand for charging piles has gradually increased. As an important electrical load, how to effectively manage the power output of these charging piles and ensure the safe operation of the charging station has become an urgent problem to be solved. Especially in a charging station, when the number of charging piles is too large, overloading is likely to occur, resulting in the triggering of leakage protection and then tripping and power-off, affecting the normal use of charging facilities. The root cause of this problem lies in the untimely current regulation in the power station. Especially when multiple charging piles are charging simultaneously, how to reasonably distribute the current load to avoid overloading the power station is an important challenge faced by electric vehicle charging stations. The LBC (Load Balance Control Box), as a new type of current regulation device, can effectively balance the power distribution among multiple charging piles and ensure the stability and safety of the power station under different load conditions.

[0003] In the prior art, the current load regulation of charging piles mainly relies on traditional circuit protection devices and power setting strategies. When the current in the power station where the charging pile is located approaches the set warning line, the charging pile will automatically reduce the power output or stop charging to prevent current overload.

[0004] However, in the prior art, the traditional circuit protection device is based on a fixed power setting and cannot dynamically adjust in real time according to the actual load situation of the power station, and is prone to slow response. Especially when the load of the power station fluctuates greatly, the system may not be able to adjust the power output in time, resulting in frequent tripping, seriously affecting the stable operation of the charging pile. Moreover, the prior art does not consider the power limit of the power contract and often only focuses on the physical power upper limit of the power station. In the case where the contract power is much lower than the physical power upper limit, the existing power regulation strategy still judges based on the fusing current, resulting in waste of power resources or overloading of the system, and then causing economic losses such as fines. Summary of the Invention

[0005] Based on this, in view of the above technical problems, it is necessary to provide a method, device, computer device, computer-readable storage medium, and computer program product for regulating the load balance of charging piles that can perform multi-interval hierarchical regulation and dynamically adjust the safe operating interval.

[0006] In a first aspect, this application provides a method for regulating the load balance of charging piles. The method includes:

[0007] Poll the charging piles according to a preset polling scheme to obtain the number of output charging piles and the current output current;

[0008] Perform output calculation based on the preset output threshold and the current output current to obtain the current output limit current;

[0009] Perform regulation calculation based on the current output current and the current output limit current to obtain the current issued current;

[0010] Perform issued adjustment based on the current output current, the current issued current, and the current charging mode to obtain the target issued current.

[0011] In one embodiment, performing output calculation based on the preset output threshold and the current output current to obtain the current output limit current includes:

[0012] Perform calculation and comparison based on the current output current, the contract power, and the current carrying threshold to obtain the current maximum current;

[0013] Perform calculation based on the current alarm parameter, the current low line parameter, and the current maximum current to obtain the current alarm current and the current low line current.

[0014] In one embodiment, before performing calculation based on the current alarm parameter, the current low line parameter, and the current maximum current to obtain the current alarm current and the current low line current, the method further includes:

[0015] Perform parameter calculation based on the current maximum current and the current output current to obtain the current first parameter;

[0016] Perform data calculation based on the number of output charging piles to obtain the current second parameter;

[0017] Determine the current alarm parameter based on the current first parameter, the current second parameter, and the alarm reference data;

[0018] Determine the current low line parameter based on the current first parameter, the current second parameter, and the low line reference data.

[0019] In one embodiment, performing regulation calculation based on the current output current and the current output limit current to obtain the current issued current includes:

[0020] Perform comparative analysis based on the current alarm current, the current low line current, and the current output current to obtain the first comparison result;

[0021] Perform regulation calculation based on the first comparison result and the preset current distribution scheme to obtain the current issued current.

[0022] In one embodiment, performing regulation calculation based on the first comparison result and the preset current distribution scheme to obtain the current issued current includes:

[0023] Screen the preset current distribution scheme according to the first comparison result to obtain the current adjustment parameter;

[0024] Calculate according to the current adjustment parameter, the current output limit current and the current output current to obtain the current issued current.

[0025] In one embodiment, perform downlink adjustment according to the current output current, the current issued current and the current charging mode to obtain the target issued current, including:

[0026] When it is determined that the current charging mode is the equalizing charge mode, compare the current output current with the current issued current to obtain a second comparison result;

[0027] Screen the preset current correction parameter according to the second comparison result to obtain the target current correction parameter;

[0028] Perform current calculation according to the current output current, the current issued current and the target current correction parameter to obtain the final issued current.

[0029] In one embodiment, perform downlink adjustment according to the current output current, the current issued current and the current charging mode to obtain the target issued current, further including:

[0030] When it is determined that the current charging mode is the full load mode, determine the current charging pile operation sequence;

[0031] Perform current distribution according to the current issued current, the current charging pile operation sequence and the charging pile upper limit current to obtain the target distribution current of each charging pile in the operating state.

[0032] In a second aspect, the present application also provides a charging pile load balancing control device. The device includes:

[0033] A polling pulling module, configured to perform polling pulling on the charging piles according to a preset polling scheme to obtain the number of output charging piles and the current output current;

[0034] A calculation processing module, configured to perform output calculation according to a preset output threshold and the current output current to obtain the current output limit current;

[0035] A regulation calculation module, configured to perform regulation calculation according to the current output current and the current output limit current to obtain the current issued current;

[0036] An adjustment correction module, configured to perform downlink adjustment according to the current output current, the current issued current and the current charging mode to obtain the target issued current.

[0037] In a third aspect, the present application also provides a computer device. The computer device includes a memory and a processor. The memory stores a computer program. When the processor executes the computer program, the following steps are implemented:

[0038] Poll the charging piles according to a preset polling scheme to obtain the number of output charging piles and the current output current;

[0039] Perform output calculation according to a preset output threshold and the current output current to obtain the current output limit current;

[0040] Perform regulation calculation according to the current output current and the current output limit current to obtain the current issued current;

[0041] Perform issuing adjustment according to the current output current, the current issued current, and the current charging mode to obtain the target issued current.

[0042] In a fourth aspect, the present application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program. When the computer program is executed by a processor, the following steps are implemented:

[0043] Poll the charging piles according to a preset polling scheme to obtain the number of output charging piles and the current output current;

[0044] Perform output calculation according to a preset output threshold and the current output current to obtain the current output limit current;

[0045] Perform regulation calculation according to the current output current and the current output limit current to obtain the current issued current;

[0046] Perform issuing adjustment according to the current output current, the current issued current, and the current charging mode to obtain the target issued current.

[0047] In a fifth aspect, the present application also provides a computer program product. The computer program product includes a computer program. When the computer program is executed by a processor, the following steps are implemented:

[0048] Poll the charging piles according to a preset polling scheme to obtain the number of output charging piles and the current output current;

[0049] Perform output calculation according to a preset output threshold and the current output current to obtain the current output limit current;

[0050] Perform regulation calculation according to the current output current and the current output limit current to obtain the current issued current;

[0051] Perform issuing adjustment according to the current output current, the current issued current, and the current charging mode to obtain the target issued current.

[0052] The above-mentioned charging pile load balancing control method, device, computer equipment, storage medium and computer program product regularly pull the charging piles based on a preset polling scheme, and obtain the number and current situation of the currently output charging piles in real time, providing accurate data support for subsequent current regulation; then calculate using a preset output threshold and the currently output current, and further evaluate the output limit of the current to ensure that the current distribution of each charging pile does not exceed the safe range; afterwards, perform regulation calculations based on the currently output current and the limit current, dynamically adjust the issued current of each charging pile, avoid overload or power waste, and need to adjust the issued current according to different charging modes to ensure that the current distribution can not only ensure efficient charging, but also avoid equipment damage or grid impact caused by current fluctuations; through the dynamic adjustment mechanism, the optimal allocation of power resources is achieved, enabling the charging piles to operate in the safest and most efficient manner under different loads and charging modes, and through fine-tuning, the system not only reduces the impact of current mutations on the power grid, that is, the power grid burden is effectively balanced, but also effectively reduces the start-stop frequency of the charging guns and extends the service life of the equipment. Description of the Drawings

[0053] Figure 1 It is an application environment diagram of the charging pile load balancing control method in an embodiment;

[0054] Figure 2 It is a flowchart of the charging pile load balancing control method in an embodiment;

[0055] Figure 3 It is a flowchart of the output limit current calculation step in an embodiment;

[0056] Figure 4 It is a current regulation diagram of the output current in an embodiment;

[0057] Figure 5 It is a parameter change diagram of the regulation parameters in an embodiment;

[0058] Figure 6 It is a flowchart of the equalizing charge regulation step in an embodiment;

[0059] Figure 7 It is a flowchart of the full load regulation step in an embodiment;

[0060] Figure 8 It is a structural block diagram of the charging pile load balancing control device in an embodiment;

[0061] Figure 9 It is an internal structure diagram of the computer equipment in an embodiment. Detailed Embodiments

[0062] To make the objectives, technical solutions and advantages of this application more clear and understandable, the following further elaborates on this application in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely used to explain this application and are not intended to limit this application.

[0063] The charging pile load balancing control method provided by the embodiments of this application can be applied to an application environment as Figure 1 shown. Among them, the charging station 102 communicates with the control background 104 through a network or the power grid. The data storage system can store the data that the control background 104 needs to process. The data storage system can be integrated on the control background 104, or can be placed on the cloud or other network servers. Based on a preset polling scheme, the charging piles are periodically pulled, and the number of currently output charging piles and the current situation are obtained in real time. Then, calculations are performed using a preset output threshold and the current output current, so as to be able to evaluate the output limit of the current current. After that, control calculations are performed based on the current output current and the output limit current, and the issued current of each charging pile is dynamically adjusted. Among them, the charging station includes charging piles, and the types of charging piles include slow charging piles, fast charging piles or ultra-fast charging piles. The control background can be a wireless load balancing box or a cloud platform. And if a wireless load balancing box is used, a wireless load balancing box can be associated with at most 20 charging piles.

[0064] In an exemplary embodiment, as Figure 2 shown, a charging pile load balancing control method is provided. Taking the control background in Figure 1 as an example, the method includes the following steps:

[0065] Step 202, polling and pulling the charging piles according to a preset polling scheme to obtain the number of output charging piles and the current output current.

[0066] Exemplarily, during the use of the charging station, polling communication is performed on the charging piles that are ready to charge or are charging, so as to obtain the number of charging piles that are ready to charge or are charging, that is, the number of output charging piles, and the output current of the charging gun, that is, the current output current. In one embodiment, let the time required for a single charging pile communication of the charging pile be , in a charging system, a round of control cycle for a single charging pile is:

[0067]

[0068] Among them, is the current number of charging piles

[0069] And in order to prevent the current from changing frequently, it is defined that the minimum of a round of polling cycle is 60s.

[0070] If the charging pile is equipped with two charging guns, the current number of charging piles is modified to the number of output charging guns.

[0071] Step 204: Perform an output calculation based on a preset output threshold and the current output current to obtain the current output limit current.

[0072] Among them, the preset output threshold includes the contract power and the current carrying threshold. The contract power is the maximum power consumption within a certain period of time; the output limit current includes the warning current and the low-line current.

[0073] Exemplarily, when installing the charging pile, parameters such as the upper limit of the fuse current, the contract power, and the single-phase / three-phase system are set. Then, after obtaining the current output current, based on the current load condition and the actual output current of the charging pile, that is, the current output current, the distributable current is calculated. Then, based on the distributable current and the upper limit of the current in the line, the maximum distributable current is determined. In addition, in order to improve the utilization efficiency of the current, under the limitation of the upper limit of the fuse current and the contract power, the warning current and the low-line current are set. Then, after determining the maximum distributable current, the current warning current and the current low-line current, that is, the current output limit current, are determined.

[0074] Step 206: Perform a regulation calculation based on the current output current and the current output limit current to obtain the current issued current.

[0075] Exemplarily, the output current of the charging pile is adjusted using the currently obtained output current and the current output limit current obtained by polling, so that the output current of the charging pile is maintained within a certain range, that is, the current issued current is obtained.

[0076] Step 208: Perform an issuance adjustment based on the current output current, the current issued current, and the current charging mode to obtain the target issued current.

[0077] Among them, the charging mode includes the equalizing charge mode and the full-load mode.

[0078] Exemplarily, before issuing current to the charging pile, it is necessary to analyze the charging modes of the charging piles in the charging station, and then regulate the current for each charging pile under different charging modes to obtain the finally issued current, that is, the target issued current.

[0079] In the above charging pile load balancing regulation method, the charging piles are regularly pulled based on a preset polling scheme to obtain the number of currently output charging piles and the current situation in real time, providing accurate data support for subsequent current regulation; then, the preset output threshold is used to calculate with the current output current, so as to be able to evaluate the output limit of the current, ensuring that the current distribution of each charging pile does not exceed the safe range; after that, regulation calculations are performed based on the current output current and the output limit current to dynamically adjust the issued current of each charging pile, avoiding overload or power waste, and the issued current needs to be adjusted according to different charging modes to ensure that the current distribution can not only ensure efficient charging but also avoid equipment damage or grid impact caused by current fluctuations; through the dynamic adjustment mechanism, the optimal allocation of power resources is achieved, enabling the charging piles to operate in the safest and most efficient manner under different loads and charging modes, and through refined adjustment, the system not only reduces the impact of current mutation on the power grid, that is, the power grid burden is effectively balanced, but also effectively reduces the start-stop frequency of the charging guns and extends the service life of the equipment.

[0080] In an exemplary embodiment, as Figure 3 shown, output calculations are performed according to the preset output threshold and the current output current to obtain the current output limit current, including:

[0081] Step 302, calculate and compare according to the current output current, contract power, and current carrying threshold to obtain the current maximum current.

[0082] Among them, the preset output threshold includes the contract power and the current carrying threshold.

[0083] Exemplarily, after determining the preset output threshold, calculate the current available for regulation according to the power specified in the contract, the current load, and the output current of the charging piles in the current system. Specifically in a single-phase system:

[0084]

[0085] Among them, is the contract available current, is the contract power, and U is the voltage of the swapping station.

[0086] Specifically in a three-phase system:

[0087]

[0088] Among them, is the contract available current, is the contract power, is the phase voltage of the swapping station.

[0089] Then, compare the calculated available contract current with the current-carrying threshold of the charging station line, i.e., the fuse melting current, and select the smaller one as the maximum available current, i.e., the current maximum current. Specifically in a single-phase system:

[0090]

[0091] Wherein, is the current-carrying threshold, i.e., the fuse melting current.

[0092] Specifically in a three-phase system:

[0093]

[0094] Wherein, is the current-carrying threshold, i.e., the fuse melting current.

[0095] Step 304: Calculate based on the current alarm parameter, the current low-line parameter, and the current maximum current to obtain the current alarm current and the current low-line current.

[0096] Exemplarily, after determining the maximum available current, i.e., the current maximum current, combine the current alarm parameter and the current low-line parameter to respectively determine the current alarm current and the current low-line current. Specifically:

[0097]

[0098]

[0099] Wherein, is the current alarm current, is the current low-line current, is the current alarm parameter, is the current low-line parameter.

[0100] In this embodiment, by calculating and comparing using the current output current, the contract power, and the current-carrying threshold, the current maximum current can be accurately obtained, providing a reliable basis for subsequent current management. Then, by combining it with the current alarm parameter and the low-line parameter, the current alarm current and the low-line current can be further calculated, enabling real-time monitoring of current fluctuations and load conditions, helping the system dynamically adjust the working area, avoiding the risk of current overlimit, and thus ensuring the safe operation of the charging pile system.

[0101] In an exemplary embodiment, before calculating based on the current alarm parameter, the current low-line parameter, and the current maximum current to obtain the current alarm current and the current low-line current, the method further includes:

[0102] Perform parameter calculation based on the current maximum current and the current output current to obtain the current first parameter;

[0103] Perform data calculation based on the number of output charging piles to obtain the current second parameter; determine the current warning parameter based on the current first parameter, the current second parameter, and the warning reference data; determine the current low-line parameter based on the current first parameter, the current second parameter, and the low-line reference data.

[0104] Exemplarily, when polling the charging piles, once the quantity increases, the possibility of exceeding the upper limit during the current distribution process becomes higher. As a result, the area between the current warning current and the current low-line current, i.e., the optimal working area, will shrink. To ensure that a sudden change in the external load does not cause the current in the power system to exceed the upper limit, the first parameter and the second parameter are introduced. The first parameter is used as a parameter to measure the level of the external power load, and the second parameter is used as a parameter to measure the number level of the charging guns being charged. Specifically:

[0105]

[0106]

[0107] Among them, u is the first parameter, and v is the second parameter. is the output current of the i-th charging pile. is the current output current. is the number of charging piles ready to charge or being charged, i.e., the number of output charging piles.

[0108] And the above second parameter can be combined with the function to observe the change trend of the image, specifically as Figure 5 shown.

[0109] Then, use the first parameter and the second parameter to calculate the current warning parameter and the current low-line warning parameter respectively with the warning reference data and the low-line reference data. Specifically:

[0110]

[0111]

[0112] Among them, is the warning reference data. is the low-line reference data. , , , are the calculation weights respectively.

[0113] And in one embodiment, the specific data of the warning reference data, the low-line reference data, and the calculation weights are shown in Table 1 below. Specifically:

[0114] Table 1

[0115]

[0116] Based on the values in the above table, the current alarm parameter and the current low-line alarm parameter can be calculated under the data in Table 1.

[0117] In an exemplary embodiment, regulation calculations are performed according to the current output current and the current output limit current to obtain the current issued current, including:

[0118] Comparative analysis is performed on the current alarm current, the current low-line current, and the current output current to obtain a first comparison result; regulation calculations are performed according to the first comparison result and a preset current distribution scheme to obtain the current issued current.

[0119] Among them, the current output limit current includes the current alarm current and the current low-line current.

[0120] Exemplarily, after calculating the current alarm current and the current low-line current, it is necessary to compare the minimum charging current, the current maximum current, and the current output current, and then determine the current issued current.

[0121] The comparison results specifically include the following four cases:

[0122] The first case: the current output current is lower than the current low-line current;

[0123] The second case: the current output current is greater than or equal to the current low-line current and less than the current alarm current;

[0124] The third case: the current output current is greater than or equal to the current alarm current and less than the current maximum current;

[0125] The fourth case: the current output current is greater than or equal to the current maximum current.

[0126] Then, different adjustment parameters are selected according to different situations, that is, the current distribution scheme corresponding to each situation is selected from the preset current distribution scheme, and then the current issued current is calculated by combining several of the previous low-line current, the current alarm current, the charging station phase current, and the current output current.

[0127] In an exemplary embodiment, regulation calculations are performed according to the first comparison result and a preset current distribution scheme to obtain the current issued current, including:

[0128] The preset current distribution scheme is screened according to the first comparison result to obtain the current adjustment parameter; calculations are performed according to the current adjustment parameter, the current output limit current, and the current output current to obtain the current issued current.

[0129] Exemplarily, when the current output current is lower than the current low-line current, the first adjustment parameter is selected, and the current issued currently is calculated by using the current low-line current, the charging station phase current, and the current output current, specifically as follows:

[0130]

[0131] Wherein, is the current issued currently, is the first adjustment parameter, is the current low-line current, is the charging station phase current, is the output current of the i-th charging pile, is the current output current.

[0132] When the current output current is greater than or equal to the current low-line current and less than the current warning current, the current issued currently is calculated by using the current warning current, the charging station phase current, and the current output current, specifically as follows:

[0133]

[0134] Wherein, is the current warning current.

[0135] When the current output current is greater than or equal to the current warning current and less than the current maximum current, the second adjustment parameter is selected, and the current issued currently is calculated by using the current warning current, the charging station phase current, and the current output current, specifically as follows:

[0136]

[0137] Wherein, is the current warning current, is the second adjustment parameter.

[0138] When the current output current is greater than or equal to the current maximum current, the third adjustment parameter is selected, and the current issued currently is calculated by using the current warning current, the charging station phase current, and the current output current, specifically as follows:

[0139]

[0140] Wherein, is the current warning current, is the third adjustment parameter.

[0141] The current regulation of the above output current is as Figure 4 shown. And in one embodiment, the specific data of the first adjustment parameter, the second adjustment parameter, and the third adjustment parameter are shown in Table 2, specifically as follows:

[0142] Table 2

[0143]

[0144] Based on the values in the above table, the specific values of the currently issued current corresponding to different situations under the data in Table 2 can be calculated.

[0145] In an exemplary embodiment, as Figure 6 shown, the issued adjustment is performed according to the current output current, the currently issued current, and the current charging mode to obtain the target issued current, including:

[0146] Step 602, when it is determined that the current charging mode is the equalizing charge mode, compare the current output current with the currently issued current to obtain a second comparison result.

[0147] Exemplarily, under the equalizing charge logic, the target current issued to each charging pile (total number is n) currently being charged is:

[0148]

[0149] where is the target current.

[0150] To reduce the impact on the power system, it is necessary to set the issued current.

[0151] Compare the current output current with the currently issued circuit, and then obtain a second comparison result. The second comparison result includes two situations: the current output current is greater than or equal to the currently issued circuit and the current output current is less than the currently issued circuit.

[0152] Step 604, screen the preset current correction parameters according to the second comparison result to obtain the target current correction parameter.

[0153] Among them, the preset current correction parameters include a first correction parameter and a second correction parameter.

[0154] Exemplarily, when the current output current is greater than or equal to the currently issued circuit, select the first correction parameter as the target current correction parameter;

[0155] When the current output current is less than the currently issued circuit, select the second correction parameter as the target current correction parameter.

[0156] And in one embodiment, the specific data of the first correction parameter and the second correction parameter are shown in Table 3, specifically:

[0157] Table 3

[0158] ​

[0159] The values in the above table can be used to calculate the specific values of the target issued current corresponding to different situations under the data in Table 3.

[0160] Step 606: Calculate the current based on the current output current, the current issued current, and the target current correction parameter to obtain the final issued current.

[0161] Exemplarily, in the case of determining the target current correction parameter, calculate using the current output current and the current issued current in combination with the target current correction parameter, and then obtain the final issued current. Specifically,

[0162]

[0163] where, is the current issued currently, is the final issued current

[0164] In an exemplary embodiment, as Figure 7 shown, perform issue adjustment according to the current output current, the current issued current, and the current charging mode to obtain the target issued current. It further includes:

[0165] Step 702: When it is determined that the current charging mode is the full-load mode, determine the current charging pile operation sequence.

[0166] Exemplarily, in the full-load case, the current issued currently When issuing, the priority will be determined according to the charging time to ensure that the charging piles with higher priority operate at full load first. Therefore, it is necessary to determine the current charging pile operation sequence.

[0167] Step 704: Perform current allocation according to the current issued current, the current charging pile operation sequence, and the upper limit current of the charging pile to obtain the target allocated current of each charging pile in the operating state.

[0168] Exemplarily, if the available current, that is, the current issued currently, satisfies all the current chargers, then all will be at full load. The specific target allocated current is:

[0169]

[0170] where, is the full-load allocation current of all charging piles.

[0171] If not, that is, it is not sufficient to satisfy all charging piles at full load, it is necessary to check whether the remaining current satisfies the minimum requirements of the subsequent charging piles, that is, the first j charging piles operate at full load and it is necessary to judge the (j + 1)-th charging pile. At the same time . In one embodiment, the minimum operating current of the single-phase system is set to 6A, and the minimum operating current of the three-phase system is set to 18A.

[0172] When judging the (j + 1)-th charging pile, the current used for the operation of the (j + 1)-th charging pile is greater than or equal to the minimum operating current of the single-phase system or the three-phase system, and the target allocated current is specifically:

[0173]

[0174] wherein, is the output current of the (j + 1)-th charging pile.

[0175] When judging the (j + 1)-th charging pile, the current used for the operation of the (j + 1)-th charging pile is less than the minimum operating current of the single-phase system or the three-phase system, and the target allocated current is specifically:

[0176]

[0177] wherein, is the remaining power.

[0178] Then, the last charging pile may start and stop frequently at this time.

[0179] In an exemplary embodiment, a method for regulating the load balance of charging piles is provided, including the following steps:

[0180] Poll the charging piles according to a preset polling scheme to obtain the number of output charging piles and the current output current.

[0181] Calculate parameters based on the current maximum current and the current output current to obtain the current first parameter.

[0182] Calculate data based on the number of output charging piles to obtain the current second parameter.

[0183] Determine the current warning parameter based on the current first parameter, the current second parameter, and the warning reference data.

[0184] Determine the current low-line parameter based on the current first parameter, the current second parameter, and the low-line reference data.

[0185] Calculate and compare according to the current output current, the contract power, and the current carrying threshold to obtain the current maximum current.

[0186] Calculate based on the current warning parameter, the current low-line parameter, and the current maximum current to obtain the current warning current and the current low-line current.

[0187] Perform a comparative analysis based on the current warning current, the current low-line current, and the current output current to obtain the first comparison result.

[0188] Screen the preset current allocation scheme according to the first comparison result to obtain the current adjustment parameter.

[0189] Calculate according to the current adjustment parameter, the current output limit current, and the current output current to obtain the currently issued current.

[0190] When it is determined that the current charging mode is the equalizing charge mode, compare the current output current with the currently issued current to obtain a second comparison result.

[0191] Screen the preset current correction parameter according to the second comparison result to obtain the target current correction parameter.

[0192] Perform current calculation according to the current output current, the currently issued current, and the target current correction parameter to obtain the final issued current.

[0193] When it is determined that the current charging mode is the full load mode, determine the current charging pile operation sequence.

[0194] Perform current distribution according to the currently issued current, the current charging pile operation sequence, and the charging pile upper limit current to obtain the target distribution current of each charging pile in the operating state.

[0195] It should be understood that although the steps in the flowcharts involved in the above-described embodiments are sequentially shown according to the indications of the arrows, these steps do not necessarily need to be executed in the order indicated by the arrows. Unless otherwise clearly stated in this article, the execution of these steps has no strict order limit, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-described embodiments may include multiple steps or multiple stages. These steps or stages do not necessarily need to be executed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be executed alternately or alternately with at least a part of other steps or steps in other steps.

[0196] Based on the same inventive concept, the embodiments of the present application also provide a charging pile load balancing control device for implementing the charging pile load balancing control method described above. The implementation solutions provided by this device to solve problems are similar to the implementation solutions described in the above method. Therefore, the specific limitations in one or more embodiments of the following charging pile load balancing control device can refer to the limitations on the charging pile load balancing control method in the above text, and will not be repeated here.

[0197] In one embodiment, as Figure 8 shown, a charging pile load balancing control device is provided, including: a polling pulling module 802, a calculation processing module 804, a regulation calculation module 806, and an adjustment correction module 808, where:

[0198] The polling module 802 is used to poll the charging piles according to a preset polling scheme, and obtain the number of output charging piles and the current output current;

[0199] The calculation and processing module 804 is used to perform output calculation according to a preset output threshold and the current output current, and obtain the current output limit current;

[0200] The regulation and calculation module 806 is used to perform regulation calculation according to the current output current and the current output limit current, and obtain the current issued current;

[0201] The adjustment and correction module 808 is used to perform issued adjustment according to the current output current, the current issued current, and the current charging mode, and obtain the target issued current.

[0202] In an exemplary embodiment, the calculation and processing module 804 is further used to perform calculation and comparison according to the current output current, the contract power, and the current carrying threshold, and obtain the current maximum current; perform calculation according to the current alarm parameter, the current low line parameter, and the current maximum current, and obtain the current alarm current and the current low line current.

[0203] In an exemplary embodiment, the calculation and processing module 804 is further used to perform parameter calculation according to the current maximum current and the current output current, and obtain the current first parameter; perform data calculation according to the number of output charging piles, and obtain the current second parameter; determine the current alarm parameter based on the current first parameter, the current second parameter, and the alarm reference data; determine the current low line parameter based on the current first parameter, the current second parameter, and the low line reference data.

[0204] In an exemplary embodiment, the regulation and calculation module 806 is further used to perform comparison and analysis according to the current alarm current, the current low line current, and the current output current, and obtain the first comparison result; perform regulation calculation according to the first comparison result and a preset current distribution scheme, and obtain the current issued current.

[0205] In an exemplary embodiment, the regulation and calculation module 806 is further used to screen the preset current distribution scheme according to the first comparison result, and obtain the current adjustment parameter; perform calculation according to the current adjustment parameter, the current output limit current, and the current output current, and obtain the current issued current.

[0206] In an exemplary embodiment, the adjustment and correction module 808 is further used to compare the current output current with the current issued current when it is determined that the current charging mode is the equalizing charge mode, and obtain the second comparison result; screen the preset current correction parameter according to the second comparison result, and obtain the target current correction parameter; perform current calculation according to the current output current, the current issued current, and the target current correction parameter, and obtain the final issued current.

[0207] In an exemplary embodiment, the adjustment and correction module 808 is further configured to determine the current charging pile operation sequence when it is determined that the current charging mode is the full-load mode; perform current distribution according to the currently issued current, the current charging pile operation sequence, and the upper limit current of the charging pile to obtain the target allocated current of each charging pile in the operating state.

[0208] Each module in the above charging pile load balancing control device can be implemented in whole or in part by software, hardware, and their combination. The above modules can be embedded in the processor of the computer device in hardware form or independent of it, or stored in the memory of the computer device in software form, so that the processor can call and execute the operations corresponding to the above respective modules.

[0209] In one embodiment, a computer device is provided. The computer device can be a server, and its internal structure diagram can be as Figure 9 shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, abbreviated as I / O), and a communication interface. Among them, the processor, the memory, and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store charging pile current data. The input / output interface of the computer device is used to exchange information between the processor and external devices. The communication interface of the computer device is used to communicate with external terminals through a network connection. When the computer program is executed by the processor, it implements a charging pile load balancing control method.

[0210] Those skilled in the art can understand that Figure 9 the structure shown in is only a block diagram of some structures related to the solution of this application, and does not constitute a limitation on the computer device to which the solution of this application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0211] In one embodiment, a computer device is provided, including a memory and a processor. A computer program is stored in the memory, and when the processor executes the computer program, it implements the steps in the above method embodiments.

[0212] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by the processor, it implements the steps in the above method embodiments.

[0213] In one embodiment, a computer program product is provided, including a computer program which, when executed by a processor, implements the steps in the above method embodiments.

[0214] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use, and processing of relevant data need to comply with the relevant laws, regulations, and standards of relevant countries and regions.

[0215] Those of ordinary skill in the art can understand that all or part of the processes of implementing the above method embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the above method embodiments. Among them, any reference to a memory, database, or other medium used in the embodiments provided in this application can include at least one of non-volatile and volatile memories. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc. The databases involved in the embodiments provided in this application can include at least one of relational databases and non-relational databases. Non-relational databases can include distributed databases based on blockchain, etc., and are not limited thereto. The processors involved in the embodiments provided in this application can be general-purpose processors, central processors, graphics processors, digital signal processors, programmable logic devices, data processing logics based on quantum computing, etc., and are not limited thereto.

[0216] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0217] The above-described embodiments merely represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims

1. A charging pile load balancing control method, characterized in that: The method comprises: Poll and pull the charging piles according to the preset polling scheme to obtain the number of output charging piles and the current output current; Perform output calculation according to the preset output threshold and the current output current to obtain the current output limit current; Performing control calculation according to the current output current and the current output limit current to obtain the current sending current; The transmission adjustment is performed according to the current output current, the current transmission current and the current charging mode to obtain the target transmission current.

2. The charging pile load balancing control method according to claim 1, characterized in that: The preset output threshold includes a contract power and a current carrying threshold; The step of performing output calculation according to the preset output threshold and the current output current to obtain the current output limit current includes: Calculate and compare the current output current, the contract power and the current carrying threshold to obtain the current maximum current; Calculation is performed according to the current alarm parameter, the current low line parameter and the current maximum current to obtain the current alarm current and the current low line current.

3. The charging pile load balancing control method according to claim 2, characterized in that: Before calculating according to the current alarm parameter, the current low line parameter and the current maximum current to obtain the current alarm current and the current low line current, the method further includes: Perform parameter calculation according to the current maximum current and the current output current to obtain a current first parameter; Perform data calculation according to the number of output charging piles to obtain the current second parameter; Determine a current alarm parameter based on the current first parameter, the current second parameter and the alarm reference data; A current low line parameter is determined based on the current first parameter, the current second parameter and low line reference data.

4. The charging pile load balancing control method according to claim 1, characterized in that: The current output limit current includes the current alarm current and the current low line current; The step of performing control calculation according to the current output current and the current output limit current to obtain the current sending current includes: Comparing and analyzing the current alarm current, the current low line current and the current output current to obtain a first comparison result; A control calculation is performed according to the first comparison result and a preset current distribution scheme to obtain the current transmitted.

5. The charging pile load balancing control method according to claim 4, characterized in that: The performing control calculation according to the first comparison result and the preset current distribution scheme to obtain the current sent down current includes: Screening the preset current distribution scheme according to the first comparison result to obtain a current adjustment parameter; A calculation is performed according to the current adjustment parameter, the current output limit current and the current output current to obtain the current transmitted current.

6. The charging pile load balancing control method according to claim 1, characterized in that: The current charging mode includes an equalizing charging mode; the step of performing downward adjustment according to the current output current, the current downward current and the current charging mode to obtain a target downward current includes: When it is determined that the current charging mode is the equalizing charging mode, the current output current is compared with the current sending current to obtain a second comparison result; Screening the preset current correction parameter according to the second comparison result to obtain a target current correction parameter; Current calculation is performed according to the current output current, the current transmitted current and the target current correction parameter to obtain a final transmitted current.

7. The charging pile load balancing control method according to claim 6, characterized in that: The current charging mode includes a full load mode; the step of performing the downlink adjustment according to the current output current, the current downlink current and the current charging mode to obtain the target downlink current further includes: When it is determined that the current charging mode is the full load mode, determining the current charging pile operation sequence; Current distribution is performed according to the current transmitted current, the current charging pile operation sequence and the upper limit current of the charging pile to obtain a target distribution current of each charging pile in operation.

8. A charging pile load balancing control device, characterized in that: The device comprises: The polling and pulling module is used to poll and pull the charging piles according to the preset polling scheme to obtain the number of output charging piles and the current output current; A calculation processing module, used for performing output calculation according to a preset output threshold and the current output current to obtain a current output limit current; A control calculation module, used for performing control calculation according to the current output current and the current output limit current to obtain the current output current; The adjustment and correction module is used to perform the downward adjustment according to the current output current, the current downward current and the current charging mode to obtain the target downward current.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: 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 having a computer program stored thereon, 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.

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