A charging pile cooperative power supply control method and system, a terminal and a storage medium

Abstract

The application relates to a charging pile cooperative power supply control method and system, a terminal and a storage medium, and relates to the technical field of charging piles. The method comprises the following steps: acquiring target demand power of a target charging vehicle; acquiring default power supply power of a target charging pile; judging whether the default power supply power is less than the target demand power; if yes, determining a power deficiency amount according to the target demand power and the default power supply power; determining a compensating charging pile and adjustable power of the compensating charging pile based on the power deficiency amount; connecting a target cross-pile power supply path between the compensating charging pile and the target charging pile; controlling the compensating charging pile to deliver the adjustable power to the target charging pile along the target cross-pile power supply path; integrating the default power supply power and the adjustable power to obtain target output power; and charging the target charging vehicle based on the target output power. The application has the effects of improving the charging utilization efficiency of the charging pile and enabling multiple charging piles to cooperatively output to meet higher target voltage requirements.

Description

Technical Field

[0001] This application relates to the field of charging pile technology, and in particular to a charging pile collaborative power supply control method, system, terminal and storage medium. Background Technology

[0002] With the rapid growth in the number of new energy vehicles, the requirements for power supply capacity and stability of public and semi-public charging facilities are constantly increasing. However, in many existing charging stations or smaller charging sites, due to their early construction and limited design capabilities, each charging pile often has a fixed default power. These stations typically lack centralized power distribution modules or intelligent load management systems, making power scheduling between charging piles impossible and resulting in poor power supply flexibility. On the other hand, as the performance of new energy vehicles improves, the power required for charging continues to increase, and the default power of the charging piles in these stations is insufficient to meet the increased power demands. In such scenarios, the following problems often arise: charging power does not meet charging demand; vehicles occupy charging spots but do not charge, resulting in wasted charging pile resources; and excess power from charging piles cannot be rationally allocated.

[0003] Regarding the aforementioned technologies, the inventors believe that the charging utilization efficiency of charging piles needs to be improved. Summary of the Invention

[0004] To improve the charging efficiency of charging piles, this application provides a charging pile collaborative power supply control method, system, terminal, and storage medium.

[0005] Firstly, this application provides a method for coordinated power supply control of charging piles, which adopts the following technical solution:

[0006] A method for coordinated power supply control of charging piles includes:

[0007] Obtain the target power demand of the target charging vehicle;

[0008] Obtain the default power supply of the target charging station;

[0009] Determine if the default power supply is less than the target power requirement;

[0010] If so, the power shortage amount is determined based on the target power requirement and the default power supply.

[0011] The compensation charging pile and its adjustable power are determined based on the amount of power loss.

[0012] Connect the target charging pile and the target charging pile to form a cross-pile power supply path;

[0013] Control the compensation charging pile to deliver adjustable power to the target charging pile along the target cross-pile power supply path;

[0014] The target output power is obtained by integrating the default power supply and the adjustable power.

[0015] The target charging vehicle is charged based on the target output power.

[0016] By adopting the above technical solution, when the default power supply of the target charging pile is insufficient, the power loss is automatically identified, the compensation charging pile with remaining available power is dynamically selected, and a cross-pile power supply path is established. The adjustable power is quickly gathered to the target charging pile to achieve stable power replenishment for vehicles. This improves the problem that the target charging pile cannot meet the charging needs under the fixed power supply mode, and enhances the overall power utilization rate of the station and the charging efficiency of the charging pile.

[0017] Optionally, the compensation charging pile and its adjustable power are determined based on the amount of power loss, including:

[0018] Obtain the current power supply of each candidate charging station;

[0019] The remaining available power of candidate charging piles is obtained based on the current power supply.

[0020] Determine whether there is at least one candidate charging station whose remaining available power is greater than the power shortage.

[0021] If not, then execute the preset multi-pile cumulative compensation method;

[0022] If so, then obtain a set of candidate charging piles whose remaining available power is greater than the power shortage.

[0023] Obtain the cross-pile power supply path from the candidate charging pile to the target charging pile from the candidate charging pile set;

[0024] Find the shortest power supply path among the cross-pile power supply paths;

[0025] The candidate charging piles corresponding to the shortest power supply path are selected from the candidate charging piles as compensation charging piles.

[0026] The amount of power loss is determined as the adjustable power of the charging pile to compensate for it.

[0027] By adopting the above technical solution, the current power supply and remaining available power of candidate charging piles are quickly screened, and compensation charging piles with single-pile compensation capability and the shortest cross-pile power supply path are selected first, reducing the loss of cross-pile power supply path and improving compensation efficiency. When a single pile cannot meet the compensation requirements, reliable power aggregation can be achieved by pre-setting a multi-pile accumulation method, thereby improving the response speed and energy utilization of collaborative power supply, and increasing the probability that the target vehicle can obtain stable and sufficient target output power in different scenarios.

[0028] Optionally, a preset multi-stake cumulative compensation method is executed, including:

[0029] Obtain the set of power supply paths corresponding to the remaining available power of the candidate charging piles;

[0030] The path loss power corresponding to the power supply path is determined in the power supply path set;

[0031] The corrected power is obtained based on the difference between the remaining available power and the path loss power.

[0032] The corrected power is sorted in descending order to obtain the priority power sequence;

[0033] The target power group is obtained based on the priority power sequence, and the adjusted power corresponding to the target power group is used as the adjustable power.

[0034] By adopting the above technical solution, when a single candidate charging pile cannot independently meet the power shortage, a corrected effective power ranking can be generated by comprehensively considering the remaining available power of each candidate charging pile and the path loss of its corresponding power supply path. The optimal target power group is then formed based on this ranking result. This not only improves the power utilization efficiency during cross-pile compensation and reduces ineffective losses, but also ensures that the multi-pile compensation combination better meets actual needs, improving the accuracy and stability of the compensation power.

[0035] Optionally, the step of obtaining the target power group based on the priority power sequence and using the corrected power corresponding to the target power group as the adjustable power includes:

[0036] In the priority power sequence, the i-th modified power is selected as the first selected power, and the j-th modified power is selected as the second selected power, where the initial value of i is 1, the initial value of j is N, and N is the total number of candidate charging piles.

[0037] The first loop is executed, which includes: summing the first selected power and the second selected power to obtain the summed power; determining whether the power difference between the summed power and the power missing amount is within the preset deviation range; if yes, the first loop is exited and the current first selected power and the second selected power are recorded as the i-th power group; if no, the operation j=j-1 is performed and the first loop is executed again.

[0038] The second loop is executed, which includes: adding power group i to the target power group set; determining whether i is greater than or equal to j; if yes, exiting the second loop; if no, performing the operation i = i + 1, and executing the first loop.

[0039] Find the target power group corresponding to the smallest power deviation value in the target power group set;

[0040] The candidate charging piles corresponding to the first and second selected power in the target power group are used as compensation charging piles, and the first and second selected power are used as adjustable power.

[0041] By adopting the above technical solution and employing a cyclical strategy of pairing and summing with dual pointers in the priority power sequence, the target power group closest to the power shortage can be quickly located in the target power group set. This avoids the computational overhead of traditional exhaustive combination search and reduces the need for secondary adjustments due to power deviation. Ultimately, the selected target power group corresponds to the optimal combination of compensated charging piles, enabling multi-pile coordinated power supply with lower path loss and higher power matching degree, thereby improving overall dispatch efficiency and output stability.

[0042] Optionally, a priority power selection operation is performed, which includes: selecting the m-th modified power as the first priority power and selecting the n-th modified power as the second priority power in the priority power sequence, where the initial value of m is 1, the initial value of n is 2, and the maximum value of n is the total number of candidate charging piles.

[0043] Perform a priority power summation operation, which includes summing the first priority power and the second priority power to obtain the priority summation power;

[0044] Perform power difference judgment, which includes: judging whether the power difference between the priority summed power and the power missing amount is within the preset deviation range;

[0045] If so, then record the first priority power and the second priority power as the (m, n)th power group and add the (m, n)th power group to the priority power group set;

[0046] Perform the operation of n=n+1, and then perform the priority power selection operation, priority power summation operation, and power difference judgment operation again;

[0047] If not, then perform the operation m=m+1, update n to m+1, and perform the priority power selection operation, priority power summation operation and power difference judgment again until the m-th corrected power is less than or equal to half of the power missing amount;

[0048] In the set of priority power groups, find the priority target power group with the minimum total path loss power;

[0049] The candidate charging piles corresponding to the first and second priority powers in the priority target power group are used as compensation charging piles, and the first and second priority powers are used as adjustable powers.

[0050] By adopting the above technical solution, multiple corrective power combinations are screened while ensuring power loss compensation. The target power group with the lowest total path loss is selected as the compensation scheme, thereby avoiding the use of high-loss cross-pile power supply paths. This effectively reduces the overall power loss during coordinated power supply and improves energy utilization efficiency.

[0051] Optionally, obtain the real-time instantaneous values ​​of current and voltage on the cross-pile power supply path;

[0052] The instantaneous impedance change rate of each cross-pile power supply path is calculated based on the real-time instantaneous values ​​of current and voltage.

[0053] Determine whether the rate of change of impedance at any instant exceeds a preset disturbance threshold;

[0054] If so, a predictive power compensation amount is generated based on the direction and magnitude of the instantaneous impedance change rate;

[0055] Adjustable power is adjusted based on predictive power compensation.

[0056] By adopting the above technical solution, and sampling the real-time instantaneous current and voltage values ​​of the cross-pile power supply path and calculating the instantaneous impedance change rate, rapid identification of power supply path disturbances can be achieved. When any path exhibits a trend of impedance surge or drop exceeding a preset disturbance threshold, a corresponding predictive power compensation amount can be generated based on the direction and amplitude of the change rate, and the currently adjustable power can be dynamically adjusted. This allows for the early offsetting of impending voltage drop fluctuations or circulating current disturbances, transforming the compensation process from "post-event adjustment" to "pre-event control," thereby improving the stability of the power supply system.

[0057] Optionally, predictive power compensation amounts can be generated in advance based on the direction and magnitude of the instantaneous impedance change rate, including:

[0058] Obtain the instantaneous impedance change rate sequence of each cross-pile power supply path within a preset continuous time period;

[0059] Determine whether a continuous unidirectional offset segment occurs in the direction of the rate of change within a preset time period based on the instantaneous impedance change rate sequence;

[0060] If so, then obtain the set of rate of change amplitudes corresponding to the continuous unidirectional offset segment;

[0061] The amplitude difference between adjacent sampling points in the rate of change amplitude set is calculated point by point to obtain the amplitude difference sequence;

[0062] Determine whether there are any transition points in the amplitude difference sequence whose absolute value exceeds a preset transition threshold;

[0063] If so, the time period in which consecutive jump points occur is defined as the mutation interval, and the rate of change corresponding to the mutation interval is defined as the target acceleration range;

[0064] The predictive power compensation amount is generated based on the target acceleration magnitude and the direction of the rate of change.

[0065] By adopting the above technical solution, and by collecting the instantaneous impedance change rate sequence of each cross-pile power supply path within a preset continuous time period, and identifying the continuous unidirectional offset segment and abrupt change interval, it is possible to detect in advance the rapid increase or sudden drop in path impedance. Based on the direction of the change rate and the target acceleration amplitude, a predictive power compensation amount is generated, transforming compensation adjustment from a post-event response to a pre-event prediction, which helps reduce power supply fluctuations and improve the stability of cross-pile power allocation.

[0066] Secondly, this application provides a charging pile collaborative power supply control system, which adopts the following technical solution:

[0067] A charging pile collaborative power supply control system includes:

[0068] The acquisition module is used to obtain the target power requirement and the default power supply.

[0069] A memory for storing the program of the charging pile collaborative power supply control method;

[0070] The processor and the program in the memory can be loaded and executed by the processor to implement the charging pile collaborative power supply control method.

[0071] By adopting the above technical solution, when the default power supply of the target charging pile is insufficient, the power loss is automatically identified, the compensation charging pile with remaining available power is dynamically selected, and a cross-pile power supply path is established. The adjustable power is quickly gathered to the target charging pile to achieve stable power replenishment for vehicles. This improves the problem that the target charging pile cannot meet the charging needs under the fixed power supply mode, and enhances the overall power utilization rate of the station and the charging efficiency of the charging pile.

[0072] Thirdly, this application provides a smart terminal, which adopts the following technical solution:

[0073] A smart terminal includes a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and execute the method described in any one of the above.

[0074] Fourthly, this application provides a computer storage medium capable of storing corresponding programs, which facilitates improving the charging utilization efficiency of charging piles, and adopts the following technical solution:

[0075] A computer-readable storage medium storing a computer program that can be loaded by a processor and executed by any of the above-described charging pile collaborative power supply control methods.

[0076] In summary, this application includes at least one of the following beneficial technical effects:

[0077] By automatically identifying the power shortage when the default power supply of the target charging pile is insufficient, dynamically selecting the compensation charging pile with remaining available power, and establishing a cross-pile power supply path, the adjustable power can be quickly gathered to the target charging pile to achieve stable power replenishment for vehicles. This improves the problem that the target charging pile cannot meet the charging needs under the fixed power supply mode, enhances the overall power utilization rate of the station, and improves the charging utilization efficiency of the charging pile.

[0078] By quickly screening the current power supply and remaining available power of candidate charging piles, and prioritizing the selection of charging piles with single-pile compensation capability and the shortest cross-pile power supply path, the loss of cross-pile power supply path is reduced and the compensation efficiency is improved. When a single pile cannot meet the compensation requirements, reliable power aggregation can be achieved by pre-setting a multi-pile accumulation method, thereby improving the response speed and energy utilization of collaborative power supply, and increasing the probability that the target vehicle can obtain a stable and sufficient target output power in different scenarios.

[0079] By employing a cyclical strategy of pairing and summing two pointers in the priority power sequence, the target power group closest to the power shortage can be quickly located within the target power group set. This avoids the computational overhead of traditional exhaustive combination search and reduces the need for secondary adjustments due to power deviation. Ultimately, the selected target power group corresponds to the optimal combination of compensated charging piles, enabling multi-pile coordinated power supply with lower path loss and higher power matching degree, thereby improving overall dispatch efficiency and output stability. Attached Figure Description

[0080] Figure 1 This is a schematic diagram of a cross-pile device for collaborative power supply of charging piles in an embodiment of this application;

[0081] Figure 2 This is a flowchart illustrating a collaborative power supply control method for charging piles in an embodiment of this application.

[0082] Figure 3 This is a flowchart illustrating the compensation charging pile and adjustable power confirmation method in the embodiments of this application;

[0083] Figure 4 This is a flowchart illustrating the execution of a preset multi-stake cumulative compensation method in an embodiment of this application.

[0084] Figure 5 This is a flowchart illustrating a method for obtaining adjustable power in an embodiment of this application.

[0085] Figure 6 This is a flowchart illustrating method two for obtaining adjustable power in an embodiment of this application.

[0086] Figure 7 This is a flowchart illustrating a power advance output method according to an embodiment of this application;

[0087] Figure 8 This is a schematic diagram of the process for obtaining predictive power compensation in an embodiment of this application. Detailed Implementation

[0088] To make the purpose, technical solution, and advantages of this application clearer, the following description is provided in conjunction with the appendix. Figure 1 -Appendix Figure 8 The present application will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the application.

[0089] This application discloses a cross-pile device for collaborative power supply of charging piles, referring to... Figure 1 The charging pile collaborative power supply device includes several charging piles, a power supply for supplying power to the several charging piles, and a switch cabinet for controlling the power transmission between the several charging piles.

[0090] Each charging pile is connected to the switch cabinet via a charging cable. The switch cabinet contains several control cables connected to each charging cable and control switches located at several control cable connection points for controlling cable connection. Each control switch has four cable contacts: an upper contact, a lower contact, a left contact, and a right contact. By switching the state of the control switch, different contacts are connected to achieve cable connection. For example, when charging pile C1 needs to supply current to charging pile C3, the left and right contacts of control switch A1 are connected, and the left and lower contacts of control switch A2 are connected. At the same time, when charging pile C4 needs to supply current to charging pile C2, the upper and lower contacts of control switch A3, the left and lower contacts of control switch B2, the left and lower contacts of control switch B1, and the upper and lower contacts of control switch A1 are connected. For example, when charging pile C2 needs to supply circuitry to charging pile C1, the left and lower contacts of control switch A1 are connected. Simultaneously, when charging pile C3 needs to supply current to charging pile C4, the left and lower contacts of control switch C1, the upper and lower contacts of control switch B2, and the upper and lower contacts of control switch A3 are connected. By switching the connections of contacts in different control switches, circuit connections between different charging piles are achieved.

[0091] This application discloses a method for coordinated power supply control of charging piles, referring to... Figure 2The collaborative power supply control method for charging piles includes:

[0092] Step S101: Obtain the target power requirement of the target charging vehicle.

[0093] A vehicle that is currently plugged into a charging pile and has completed a communication handshake with the charging pile, and has entered or is about to enter a charging state.

[0094] The target power demand is the expected charging power reported by the battery management system of the target charging vehicle to the charging station.

[0095] Once the vehicle's charging gun is plugged into the charging pile and the physical connection and communication handshake are completed, the charging pile's control unit directly reads the power demand parameters from the charging demand message sent by the vehicle's battery management system and uses them as the target power demand.

[0096] Step S102: Obtain the default power supply of the target charging pile.

[0097] The target charging station refers to the charging station currently used to charge the target vehicle.

[0098] The default power supply is the default power provided by the power source received by the target charging station. The charging station includes a conversion module that converts the AC power output from the power source into DC power.

[0099] Step S103: Determine whether the default power supply is less than the target power requirement.

[0100] The purpose of performing this judgment step is to verify whether the target charging station can meet the target vehicle's charging power requirements.

[0101] Step S104: If so, determine the power shortage based on the target power requirement and the default power supply.

[0102] In another scenario, if the default power supply is not less than the target charging requirement, then the target vehicle will be charged only through the target charging station.

[0103] Power deficit refers to the amount of power that a target charging station lacks to meet the target charging vehicle's power demand. It is calculated by subtracting the target power demand from the default power supply.

[0104] Step S105: Determine the compensation charging pile and the adjustable power of the compensation charging pile based on the power loss.

[0105] Each charging station is equipped with a power modulator, which can be used to allocate local charging power for local vehicles and adjustable power to be delivered to the target charging station.

[0106] Compensating charging stations refer to one or more other charging stations that are selected to provide additional power to the target charging station.

[0107] Adjustable power refers to the power delivered from the compensation charging pile to the target charging pile.

[0108] In this process, one or more of the most suitable charging piles are selected from a pool of candidate charging piles as compensation charging piles corresponding to the target charging pile. The electrical power delivered by the compensation charging pile to the target charging pile is the adjustable power. The determination of the compensation charging pile and its adjustable power based on the power deficit can be referenced... Figure 3 The steps described in the embodiments are not repeated here.

[0109] Step S106: Connect the target cross-pile power supply path between the compensation charging pile and the target charging pile.

[0110] The target cross-pile power supply path is a power transmission channel from the compensation charging pile to the target charging pile, formed by the specific contact connection state of one or more sets of control switches in the switch cabinet.

[0111] By connecting the target charging pile power supply path, the power of the compensation charging pile can be transmitted to the target charging pile, realizing actual power sharing and establishing a physical path for subsequent adjustable power transmission.

[0112] For example, when charging pile C3 needs to supply current to charging pile C4, the left and lower contacts in the connecting control switch C1, the upper and lower contacts in the connecting control switch B2, and the upper and lower contacts in the connecting control switch A3 form the power supply path from charging pile C3 to charging pile C4, which is the target cross-pile power supply path.

[0113] Step S107: Control the compensation charging pile to deliver adjustable power to the target charging pile along the target cross-pile power supply path.

[0114] After obtaining the adjustable power, the default power supply is adjusted according to the adjustable power by the power regulator, and the adjusted power is transmitted to the target charging pile through the switch cabinet.

[0115] Step S108: Integrate the default power supply and adjustable power to obtain the target output power.

[0116] The target output power is the total power that the target charging pile actually outputs to the target charging vehicle, that is, the actual charging power obtained by the target charging vehicle.

[0117] The default power supply of the target charging pile itself is seamlessly integrated with the adjustable power supplied through the target cross-pile power supply path to form a complete output that meets the target power requirements, avoiding power superposition deviation or instantaneous fluctuations, and ensuring a smooth vehicle charging process.

[0118] Step S109: Charge the target charging vehicle based on the target output power.

[0119] The integrated target output power is used to charge the target vehicle at the target output power through the target charging station.

[0120] Reference Figure 3 The compensation charging pile and its adjustable power are determined based on the power shortage, including:

[0121] Step S201: Obtain the current power supply of each candidate charging pile.

[0122] Candidate charging stations refer to charging stations other than the target charging station.

[0123] The current power supply is the power supply used by the candidate charging pile for local charging. Local charging refers to the process of the candidate charging pile charging the vehicle parked in the parking space corresponding to the candidate charging pile.

[0124] When a candidate charging station is not charging locally, the current power supply is 0; if the current charging station is charging locally, the power supplied to the vehicle is the current power supply.

[0125] Step S202: Obtain the remaining available power of the candidate charging piles based on the current power supply.

[0126] The remaining available power is obtained by subtracting the default power supply from the current power supply, representing the unallocated power other than the power required by the local power supply.

[0127] Step S203: Determine whether there is at least one candidate charging station whose remaining available power is greater than the power shortage.

[0128] When the remaining available power is greater than the power shortage, it means that the candidate charging pile corresponding to the remaining available power can independently supply power compensation to the target charging pile to meet the target power demand required by the target charging pile.

[0129] Step S204: If not, execute the preset multi-pile cumulative compensation method.

[0130] For the implementation of the preset multi-pile cumulative compensation method, please refer to Figure 4 The steps described in the embodiments will not be repeated here.

[0131] Step S205: If yes, then obtain a set of candidate charging piles whose remaining available power is greater than the power shortage.

[0132] Each candidate charging station has a unique charging station identifier.

[0133] From a number of candidate charging piles, find all charging piles whose remaining available power is greater than the power shortage, and then set these charging piles together to obtain the candidate charging pile set.

[0134] Step S206: Obtain the cross-pile power supply path from the candidate charging pile to the target charging pile from the candidate charging pile set.

[0135] For example, if charging pile C2 is the target charging pile and the set of candidate charging piles is {C1, C4, C5}, then the cross-pile power supply path D1 from candidate charging pile C1 to target charging pile C2, the cross-pile power supply path D2 from candidate charging pile C4 to target charging pile C2, and the cross-pile power supply path D3 from candidate charging pile C5 to target charging pile C2 are obtained respectively. Thus, cross-pile power supply path D1, cross-pile power supply path D2, and cross-pile power supply path D3 are obtained.

[0136] Step S207: Obtain the shortest power supply path among the cross-pile power supply paths.

[0137] The length of the power supply path can be obtained based on the line length. The length of the power supply path between different candidate charging piles and the target charging pile is preset and is related to the length of the charging cable from the candidate charging pile to the switch cabinet and the length of the control cable inside the switch cabinet. The length of the power supply path is stored in a preset power supply path length table. By inputting the candidate charging pile and the target charging pile, the corresponding cross-pile power supply path length can be obtained by looking up the table.

[0138] The shortest power supply path is the one with the shortest length.

[0139] After obtaining the cross-pile power supply path, the path length corresponding to the cross-pile power supply path is obtained by looking up the preset power supply path length table. The path lengths are then sorted in ascending order, and the first one in the sorted order is the shortest path length. The power supply path corresponding to the shortest path length is the shortest power supply path.

[0140] Step S208: Select the candidate charging pile corresponding to the shortest power supply path from the candidate charging pile set as the compensation charging pile.

[0141] In obtaining the shortest power supply path, the charging pile identifier of the candidate charging pile corresponding to the shortest power supply path is extracted, and the candidate charging pile is used as the compensation charging pile according to the charging pile identifier.

[0142] Step S209: Determine the power loss amount as the adjustable power of the compensation charging pile.

[0143] Since this step is performed on the premise that the remaining available power of at least one candidate charging pile is greater than the power shortage, that is, the remaining available power can meet the target charging pile to charge at the target required power, there is a probability that the remaining available power is greater than the power shortage. Therefore, it is only necessary to determine the power shortage as the adjustable power of the compensation charging pile.

[0144] Reference Figure 4 The preset multi-pile cumulative compensation method is executed, including:

[0145] Step S301: Obtain the set of power supply paths corresponding to the remaining available power of the candidate charging piles.

[0146] The power supply path set refers to the set of power supply paths from several candidate charging piles to the target charging pile, provided that the candidate charging piles have remaining available power and the remaining available power is not greater than the power shortage.

[0147] Step S302: Determine the path loss power corresponding to the power supply path in the power supply path set.

[0148] The path loss power is directly proportional to the charging of the power supply path. After looking up the path length corresponding to the power supply path through the preset power supply path length table, the path length is multiplied by the preset path power loss coefficient to obtain the path loss power.

[0149] Step S303: Obtain the corrected power based on the difference between the remaining available power and the path loss power.

[0150] Corrected power refers to the power actually received by the target charging station after subtracting the path loss power from the remaining available power. The corrected power is obtained by subtracting the path loss power from the remaining available power.

[0151] Step S304: Perform a descending order operation on the corrected power to obtain the priority power sequence.

[0152] The priority power sequence refers to the power sequence obtained by sorting the modified powers in descending order from a number of modified powers.

[0153] The reason for sorting by corrected power is that in some cases, such as when the remaining available power of candidate charging pile C3 is greater than that of candidate charging pile C5, and the target charging pile is C6, after subtracting the corresponding path loss power, the corrected power of candidate charging pile C3 is actually less than that of candidate charging pile C5. Therefore, in the priority power supply sequence, candidate charging pile C5 is ranked ahead of candidate charging pile C3, that is, candidate charging pile C5 is given priority in providing adjustable power to the target charging pile.

[0154] Step S305: Obtain the target power group based on the priority power sequence, and use the corrected power corresponding to the target power group as the adjustable power.

[0155] The target power group refers to the power group obtained by combining the corrected power of two candidate charging piles in the priority power sequence. The sum of the corrected power of the two compensated charging piles must be not less than the power shortage. Several power groups can be obtained according to the priority power sequence. Among the several power groups, the power group with the smallest difference between the sum of power and the power shortage is selected as the target power group.

[0156] The two candidate charging piles corresponding to the target power group are used as compensation charging piles, and the corrected power corresponding to the target power group is used as the adjustable power of the compensation charging piles corresponding to it.

[0157] Reference Figure 5 The target power group is obtained based on the priority power sequence, and the adjusted power corresponding to the target power group is used as the adjustable power, including:

[0158] Step S401: In the priority power sequence, select the i-th modified power as the first selected power and select the j-th modified power as the second selected power, where the initial value of i is 1, the initial value of j is N, and N is the total number of candidate charging piles.

[0159] i and j are index variables, and the value of N represents the number of charging piles.

[0160] With i initially set to 1, the first choice power is the corrected power ranked first in the priority power sequence. With j initially set to N, the second choice power is the corrected power ranked last in the priority power sequence. The corrected power pointed to by index variable i (the i-th corrected power) is the first choice power, and the corrected power pointed to by index variable j (the j-th corrected power) is the second choice power.

[0161] Step S402: Execute the first loop, which includes:

[0162] Step S4021: Summing the first selected power and the second selected power to obtain the summed power;

[0163] The purpose of summing is to determine whether the combination of corrected power from two different candidate charging stations can meet the target charging station's charging power requirements.

[0164] Step S4022: Determine whether the power difference between the summed power and the power missing amount is within the preset deviation range;

[0165] The preset deviation range is a preset constant that can be adjusted according to actual needs. In this embodiment, the preset deviation range can be greater than or equal to 0.

[0166] The power difference is obtained by subtracting the summed power from the missing power.

[0167] For example, if the power shortage is 60kW, the first selected power is 30kW, and the second selected power is 28kW, then the summed power is 58kW, and the power difference is -2kW, which is not within the preset deviation range; if the power shortage is 60kW, the first selected power is 30kW, and the second selected power is 35kW, then the summed power is 65kW, and the power difference is +10kW, which is within the preset deviation range.

[0168] Step S4023: If yes, exit the first loop and record the current first selected power and second selected power as the i-th power group;

[0169] The i-th power group represents the combination of the first selected power and the second selected power.

[0170] If so, it means that the power difference is within the preset deviation range, that is, the sum of the first selected power and the second selected power meets the power missing amount, and there is no need to search for the remaining available power of the (j-1)th power. Therefore, the first loop is exited, and at the same time, the current first selected power and the second selected power are recorded as the i-th power group.

[0171] After exiting the first loop, step S4024 is not executed; step S403 is executed directly.

[0172] Step S4024: If not, perform the operation j=j-1 and execute the first loop again.

[0173] If not, it means the power difference is not within the preset deviation range. Therefore, a decrement operation of j=j-1 is performed, causing the position pointed to by the index variable j to move forward one position from the position pointing to the last-ranked corrected power in the priority power sequence, so that the second selected power is updated to the (j-1)th corrected power. Then, the process returns to step S402 until the condition that the power difference is within the preset deviation range is met, at which point the first loop is exited.

[0174] Further, after performing the operation of j = j - 1 several times, when i is greater than or equal to j, the first loop is exited.

[0175] Step S403: Execute the second loop, which includes:

[0176] Step S4031: Add the i-th power group to the target power group set;

[0177] The target power group set is a set used to store the i-th power group.

[0178] Step S4032: Determine whether i is greater than or equal to j;

[0179] Among them, since the initial value of i is 1 and the initial value of j is N, j is generally greater than i. After performing the first loop, there is a situation where j = j - 1, which makes the value of j gradually decrease. When j = i or j < i, it means that the detection of the summation power in the current round has been completed and there is no need to traverse anymore, so the loop structure is exited, that is, the second loop is exited. For example, N is equal to 10, initially set i = 1, j = 10. After performing the first loop and the second loop several times, when i becomes 5 and j is 5, the judgment condition that i is greater than or greater than j is satisfied, so the second loop is exited.

[0180] Among them, since the priority power sequence is a descending sequence, when i points to the first corrected power in the priority power sequence and when performing the first loop, if there is no situation of recording the i-th power group, that is, when i is equal to 1, the i-th corrected power (the first selected power) is the maximum value of the corrected powers in the priority power sequence. After performing the operation of j = j - 1 several rounds, that is, after performing several times, the power difference between the sum of the first selected power and the second selected power and the power shortage amount is not within the preset deviation range, it means that in the priority power sequence, there is no situation where the sum of the corrected powers of two candidate charging piles is used to meet the power shortage amount. Based on this situation, the second loop is exited.

[0181] Step S4033: If so, exit the second loop;

[0182] Step S4034: If not, perform the operation of i = i + 1 and execute the first loop;

[0183] If not, it means that in the current round of i, the judgment operation of the sum of the first and second selected power and the power difference of the missing power within the preset deviation range has ended. Therefore, it is necessary to perform the increment operation of i=i+1 to make i point to the next position in the sequence. After the increment is completed, the process does not exit, but enters the first loop again and continues to execute the judgment logic of cross-stub compensation from the new i to ensure that the first selected power moves forward continuously under normal traversal conditions and can cover the judgment operation of the sum of the first and second selected power.

[0184] Step S404: Find the target power group corresponding to the smallest power deviation value in the target power group set.

[0185] The target power set is the set of the i-th power sets, which includes the corresponding i-th corrected power (first selected power) and j-th corrected power (second selected power). The minimum power deviation value is queried, and the i-th power set corresponding to the minimum power deviation value is marked as the target power set.

[0186] Step S405: Select the candidate charging piles corresponding to the first selected power and the second selected power in the target power group as compensation charging piles, and use the first selected power and the second selected power as adjustable power.

[0187] After obtaining the target power group, the candidate charging pile corresponding to the first selected power is used as the compensation charging pile, and the candidate charging pile corresponding to the second selected power is used as the compensation charging pile. The first selected power is used as the adjustable power of the compensation charging pile, and the second selected power is used as the adjustable power of the compensation charging pile. The corresponding adjustable power is delivered to the target charging pile through the two compensation charging piles to meet the target charging pile's output power requirements.

[0188] This application embodiment provides a method with Figure 5 The embodiments are presented side by side, and relevant personnel can choose this embodiment or another embodiment according to their actual needs. Figure 5 The implementation example achieves adjustable power acquisition, see reference. Figure 6 The process involves obtaining a target power set based on a priority power sequence, and using the corrected power corresponding to the target power set as the adjustable power, including:

[0189] Step S501: Perform a priority power selection operation, which includes: selecting the m-th modified power as the first priority power and selecting the n-th modified power as the second priority power in the priority power sequence, where the initial value of m is 1, the initial value of n is 2, and the maximum value of n is the total number of candidate charging piles.

[0190] Where m and n are index variables, and the maximum value of n is the total number of candidate charging piles.

[0191] With an initial value of m of 1, the first priority power is the corrected power ranked first in the priority power sequence. With an initial value of m of 2, the second priority power is the corrected power ranked second in the priority power sequence. The corrected power pointed to by the index variable m (the m-th corrected power) is the first priority power, and the corrected power pointed to by the index variable n (the n-th corrected power) is the second priority power.

[0192] Step S502: Perform a priority power summation operation, which includes summing the first priority power and the second priority power to obtain the priority summation power.

[0193] The purpose of performing the priority power summation operation is to determine whether the combination of corrected power from two different candidate charging stations can meet the target charging station's charging power requirements.

[0194] Step S503: Perform power difference judgment. Power difference judgment includes: judging whether the power difference between the priority summed power and the power missing amount is within the preset deviation range.

[0195] The preset deviation range is a preset constant that can be adjusted according to actual needs. In this embodiment, the preset deviation range can be greater than or equal to 0.

[0196] The power difference is obtained by subtracting the summed power from the power missing amount.

[0197] For example, if the power shortage is 60kW, the first selected power is 30kW, and the second selected power is 28kW, then the summed power is 58kW, and the power difference is -2kW, which is not within the preset deviation range; if the power shortage is 60kW, the first selected power is 30kW, and the second selected power is 35kW, then the summed power is 65kW, and the power difference is +10kW, which is within the preset deviation range.

[0198] Step S504: If yes, then record the first priority power and the second priority power as the (m, n)th power group and add the (m, n)th power group to the priority power group set.

[0199] The (m, n)th power group refers to the power combination consisting of the first priority power and the second priority power corresponding to the index variables m and n, and is used to represent a set of candidate compensation power schemes that meet the power matching conditions.

[0200] A priority power group set refers to a set structure used to store one or more power groups. Each power group in the set corresponds to a feasible cross-pile power compensation combination scheme.

[0201] Step S505: Execute the operation of n=n+1, and then execute the priority power selection operation, priority power summation operation, and power difference judgment again.

[0202] The operation of n=n+1 is to shift the index variable of the second priority power one position to the right in the priority power sequence. When the priority power is calculated again, the m-th correction power is summed with the (n+1)-th correction power, and so on, to complete the summation combination of the m-th correction power and several n-th correction powers.

[0203] Step S506: If not, then perform the operation of m=m+1, update n to m+1, and perform the priority power selection operation, priority power summation operation and power difference judgment again until the m-th corrected power is less than or equal to half of the power missing amount.

[0204] If not, it means that the power difference between the prioritized summation power and the power shortage is not within the preset deviation range, that is, the sum of the current first priority power and the second priority power does not meet the power shortage requirement. Therefore, the operation m=m+1 is performed, so that the first priority power moves one position to the right in the priority power sequence, and n is updated to m+1. Then, steps S501, S502, and S503 are executed again, so that the updated m-th corrected power is summed with the corrected power following it in sequence, and the power difference is judged for each summation result, so as to determine whether the new power combination meets the compensation requirement for the power shortage. The above process is executed cyclically until the currently selected m-th corrected power is less than or equal to half of the power shortage. The reason is that the priority power sequence is a descending sequence. If the m-th corrected power is less than or equal to half of the power shortage, the sum of the m-th corrected power and the corrected power following the m-th corrected power will always be less than the power shortage. Therefore, when the m-th corrected power is less than or equal to half of the power shortage, the loop of this step is exited, and then step S507 is executed.

[0205] Step S507: In the priority power group set, find the priority target power group with the minimum total path loss power.

[0206] After the priority power group set is constructed, it contains multiple power groups that meet the power shortage matching conditions, and each power group corresponds to at least one cross-pile power supply path.

[0207] For each power group in the priority power group set, obtain the path loss power corresponding to each power group, and sum them to obtain the total path loss power. From all the total path loss powers, find the minimum total path loss power, and mark the priority power group corresponding to this total path loss power as the priority target power group.

[0208] Step S508: Select the candidate charging piles corresponding to the first priority power and the second priority power in the priority target power group as compensation charging piles, and use the first priority power and the second priority power as adjustable power.

[0209] After obtaining the priority target power group, the candidate charging piles corresponding to the first priority power are used as compensation charging piles, and the candidate charging piles corresponding to the second priority power are used as compensation charging piles. The first priority power is used as the adjustable power of the compensation charging piles, and the second priority power is used as the adjustable power of the compensation charging piles. The corresponding adjustable power is delivered to the target charging piles through the two compensation charging piles to meet the target charging piles' output power requirements.

[0210] This application provides a method for power advance output, referring to... Figure 7 The method includes:

[0211] Step S601: Obtain the real-time current and voltage instantaneous values ​​on the cross-pile power supply path.

[0212] Real-time current refers to the instantaneous current value that actually flows in the connected target cross-pile power supply path.

[0213] The instantaneous voltage value refers to the real-time voltage between the output end of the compensation charging pile and the receiving end of the target charging pile on the cross-pile power supply path.

[0214] Specifically, the instantaneous values ​​of real-time current and voltage are acquired according to a preset sampling window.

[0215] Step S602: Calculate the instantaneous impedance change rate of each cross-pile power supply path based on the real-time instantaneous values ​​of current and voltage.

[0216] The instantaneous impedance change rate refers to the relative rate of change of the equivalent impedance of the cross-pile power supply path within a very short time window, and is used to characterize the dynamic trend of the path impedance.

[0217] The instantaneous voltage value within a preset sampling window is divided by the real-time current, and then divided by the time corresponding to the preset sampling window to obtain the instantaneous impedance change rate.

[0218] Step S603: Determine whether the rate of change of impedance at any instant exceeds the preset disturbance threshold.

[0219] The preset disturbance threshold is a preset constant that can be adjusted according to actual needs. It is used to identify whether there is abnormal impedance in the cross-pile power supply path.

[0220] If any instantaneous impedance number rate exceeds the preset disturbance threshold, then only step S604 needs to be executed; otherwise, no operation is performed.

[0221] Step S604: If so, generate a predictive power compensation amount based on the direction and magnitude of the instantaneous impedance change rate.

[0222] Predictive power compensation refers to the additional power compensation generated in advance by the system to offset the voltage drop or circulating current effects that will occur due to impedance changes.

[0223] The specific steps for generating the predictive power compensation amount based on the direction and amplitude of the instantaneous impedance change rate can be found in [reference needed]. Figure 8 The steps in the embodiments.

[0224] Step S605: Adjust the adjustable power based on the predictive power compensation amount.

[0225] The purpose of this step is to immediately correct the adjustable power currently being used in the cross-pile power supply path when an abnormal impedance change trend occurs, so that the target charging pile receives stable compensation power before the voltage drop or circulating current actually occurs, thereby eliminating charging power fluctuations.

[0226] If the predictive power compensation is positive (impedance rising trend), then the new adjustable power = original adjustable power + predictive power compensation.

[0227] If the predictive power compensation is negative (impedance decreasing trend), then the new adjustable power = original adjustable power - predictive power compensation.

[0228] Furthermore, after the adjustable power is adjusted, it is also necessary to monitor in real time whether the instantaneous impedance change rate of the cross-pile power supply path has recovered to below the preset disturbance threshold. If it has recovered to below the preset disturbance threshold, the current new adjustable power is maintained and continuously output until the current charging ends or a new disturbance occurs. If it has not recovered to below the preset disturbance threshold, steps S601 to S604 and subsequent adjustment steps are repeated until the instantaneous impedance change rate stabilizes below the threshold or reaches the preset maximum number of compensations.

[0229] Reference Figure 8 Based on the direction and magnitude of the instantaneous impedance change rate, predictive power compensation is generated in advance, including:

[0230] Step S701: Obtain the instantaneous impedance change rate sequence of each cross-pile power supply path within a preset continuous time period.

[0231] The preset continuous time period is a pre-defined value, which can be adjusted according to the actual situation.

[0232] The instantaneous impedance change rate sequence refers to the sequence of instantaneous impedance change rates calculated within a preset continuous time period.

[0233] Step S702: Determine whether the direction of the rate of change has a continuous unidirectional offset segment within a preset time period based on the instantaneous impedance change rate sequence.

[0234] The preset time period is a preset value.

[0235] A unidirectional offset segment refers to a subsequence within a preset time period where consecutive sampling points exhibit the same sign of the rate of change (all positive or all negative). This unidirectional offset segment indicates that the equivalent impedance of the cross-pile power supply path is continuously increasing or decreasing.

[0236] Step S703: If so, obtain the set of rate of change amplitudes corresponding to the continuous unidirectional offset segment.

[0237] On the other hand, if no continuous unidirectional offset segment occurs, the instantaneous impedance change rate sequence in the next preset continuous time period is judged to determine whether a continuous unidirectional offset segment occurs within the preset time period.

[0238] The rate of change amplitude set refers to the set of absolute values ​​of all instantaneous impedance change rate sampling points within a confirmed continuous unidirectional offset segment, used to characterize the actual intensity distribution of impedance change within that segment.

[0239] Step S704: Calculate the amplitude difference between adjacent sampling points in the rate of change amplitude set point by point to obtain the amplitude difference sequence.

[0240] Amplitude difference sequence refers to a set of data obtained by subtracting adjacent sampling points in sequence within the rate of change amplitude set. It is used to characterize whether the impedance change is "accelerating or trending towards stability".

[0241] Calculating the amplitude difference between adjacent sampling points in the rate of change amplitude set point by point means subtracting adjacent sampling points to obtain the amplitude difference, and then collecting the amplitude difference set to obtain the amplitude difference sequence. For example, there exists a rate of change amplitude set {A, B, C, D, E}, where B minus A gives a, C minus B gives b, D minus C gives c, and E minus D gives d, and the set of a, b, c, and d gives the amplitude difference change sequence.

[0242] Step S705: Determine whether there is a jump point in the amplitude difference sequence whose absolute value exceeds the preset jump threshold.

[0243] The preset threshold is a constant that can be adjusted according to actual conditions.

[0244] A jump point refers to one or more data points in the amplitude difference sequence whose absolute value exceeds a preset jump threshold.

[0245] A transition point indicates a sudden acceleration or deceleration in the impedance change rate, reaching a critical value. If this continues, it suggests potential contact erosion or circuit fault. If no transition point exists, the impedance change rate is relatively stable, and no action is required.

[0246] Step S706: If so, the time period in which consecutive jump points occur is determined as the mutation interval, and the target acceleration amplitude is determined according to the change rate amplitude corresponding to the mutation interval.

[0247] A series of transition points refers to a situation where the number of consecutive transition points exceeds the preset number of transitions.

[0248] The mutation interval refers to the entire time period covered by multiple consecutive jump points in the amplitude difference sequence where the absolute value exceeds the preset jump threshold.

[0249] The target acceleration magnitude refers to the highest magnitude value of the rate of change magnitude within the mutation interval corresponding to the time period, which is used to characterize the most severe deterioration reached by this impedance mutation disturbance.

[0250] The purpose of this step is to integrate the scattered switching points into a complete critical time window and extract the peak rate of change that best represents "impedance degradation". This enables the system to generate predictive power compensation before events such as contact erosion and line faults occur, thereby reducing the probability of fault development.

[0251] Step S707: Generate the corresponding predictive power compensation amount based on the target acceleration magnitude and the direction of the rate of change.

[0252] After obtaining the target acceleration magnitude, the compensation coefficient corresponding to the target acceleration magnitude is found in the preset target acceleration magnitude-compensation amount mapping table. If the rate of change is positive (impedance rises rapidly), the predictive power compensation amount = target acceleration magnitude × preset positive compensation coefficient; if the rate of change is negative (impedance falls rapidly, which may cause circulating current or overvoltage), the predictive power compensation amount = -(target acceleration magnitude × preset negative compensation coefficient).

[0253] Based on the same inventive concept, embodiments of this application provide a charging pile collaborative power supply control system, including:

[0254] The acquisition module is used to obtain the target power requirement and the default power supply.

[0255] A memory for storing the program of the above-mentioned charging pile collaborative power supply control method;

[0256] The processor and the program in the memory can be loaded and executed by the processor to implement the above-mentioned charging pile collaborative power supply control method.

[0257] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional modules is used as an example. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device, and unit described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0258] This application provides a computer-readable storage medium storing a computer program that can be loaded by a processor and executed as a charging pile collaborative power supply control method.

[0259] Computer storage media include, for example, USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, optical disks, and other media that can store program code.

[0260] Based on the same inventive concept, embodiments of this application provide a smart terminal, including a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and executed as a charging pile collaborative power supply control method.

[0261] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional modules is used as an example. In practical applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device, and unit described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0262] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Any feature disclosed in this specification (including the abstract and drawings) may be replaced by other equivalent or similar features unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is only one example of a series of equivalent or similar features.

Claims

1. A method for coordinated power supply control of charging piles, characterized in that, include: Obtain the target power demand of the target charging vehicle; Obtain the default power supply of the target charging station; Determine if the default power supply is less than the target power requirement; If so, the power shortage amount is determined based on the target power requirement and the default power supply. Determining the compensation charging pile and its adjustable power based on the power shortage includes: obtaining the current power supply of each candidate charging pile; obtaining the remaining available power of the candidate charging pile based on the current power supply; determining whether there is at least one candidate charging pile whose remaining available power is greater than the power shortage; if not, executing a preset multi-pile cumulative compensation method; if so, obtaining a set of candidate charging piles whose remaining available power is greater than the power shortage; obtaining cross-pile power supply paths from the candidate charging piles to the target charging piles from the candidate charging pile set; obtaining the shortest power supply path from the cross-pile power supply paths; selecting the candidate charging pile corresponding to the shortest power supply path from the candidate charging pile set as the compensation charging pile; and determining the power shortage as the adjustable power of the compensation charging pile. Connect the target charging pile and the target charging pile to form a cross-pile power supply path; Control the compensation charging pile to deliver adjustable power to the target charging pile along the target cross-pile power supply path; The target output power is obtained by integrating the default power supply and the adjustable power. The target vehicle is charged based on the target output power; Obtain the real-time instantaneous values ​​of current and voltage on the cross-pile power supply path; The instantaneous impedance change rate of each cross-pile power supply path is calculated based on the real-time instantaneous values ​​of current and voltage. Determine whether the rate of change of impedance at any instant exceeds a preset disturbance threshold; If so, a predictive power compensation amount is generated based on the direction and amplitude of the instantaneous impedance change rate, including: obtaining the instantaneous impedance change rate sequence of each cross-pile power supply path within a preset continuous time period; determining whether a continuous unidirectional offset segment occurs in the direction of the change rate within the preset time period based on the instantaneous impedance change rate sequence; if so, obtaining the change rate amplitude set corresponding to the continuous unidirectional offset segment; calculating the amplitude difference between adjacent sampling points in the change rate amplitude set point by point to obtain an amplitude difference sequence; determining whether there is a jump point in the amplitude difference sequence whose absolute value exceeds a preset jump threshold; if so, determining the time period in which jump points occur consecutively as a sudden change interval, and determining the target acceleration amplitude based on the change rate amplitude corresponding to the sudden change interval; generating the corresponding predictive power compensation amount based on the target acceleration amplitude and the change rate direction. Adjustable power is regulated based on predictive power compensation.

2. The charging pile coordinated power supply control method according to claim 1, characterized in that, The method for performing the preset multi-pile cumulative compensation includes: Obtain the set of power supply paths corresponding to the remaining available power of the candidate charging piles; The path loss power corresponding to the power supply path is determined in the power supply path set; The corrected power is obtained based on the difference between the remaining available power and the path loss power; The corrected power is sorted in descending order to obtain the priority power sequence; The target power group is obtained based on the priority power sequence, and the adjusted power corresponding to the target power group is used as the adjustable power.

3. The charging pile coordinated power supply control method according to claim 2, characterized in that, The step of obtaining the target power group based on the priority power sequence and using the corrected power corresponding to the target power group as the adjustable power includes: In the priority power sequence, the i-th modified power is selected as the first selected power, and the j-th modified power is selected as the second selected power, where the initial value of i is 1, the initial value of j is N, and N is the total number of candidate charging piles. The first loop is executed, which includes: summing the first selected power and the second selected power to obtain the summed power; determining whether the power difference between the summed power and the power missing amount is within the preset deviation range; if yes, the first loop is exited and the current first selected power and the second selected power are recorded as the i-th power group; if no, the operation j=j-1 is performed and the first loop is executed again. The second loop is executed, which includes: adding power group i to the target power group set; determining whether i is greater than or equal to j; if yes, exiting the second loop; if no, performing the operation i = i + 1, and executing the first loop. Find the target power group corresponding to the smallest power deviation value in the target power group set; The candidate charging piles corresponding to the first and second selected power in the target power group are used as compensation charging piles, and the first and second selected power are used as adjustable power.

4. The charging pile coordinated power supply control method according to claim 2, characterized in that, The step of obtaining the target power group based on the priority power sequence and using the corrected power corresponding to the target power group as the adjustable power includes: Perform a priority power selection operation, which includes: selecting the m-th modified power as the first priority power and the n-th modified power as the second priority power in the priority power sequence, where the initial value of m is 1, the initial value of n is 2, and the maximum value of n is the total number of candidate charging piles. Perform a priority power summation operation, which includes summing the first priority power and the second priority power to obtain the priority summation power; Perform power difference judgment, which includes: judging whether the power difference between the priority summed power and the power missing amount is within the preset deviation range; If so, then record the first priority power and the second priority power as the (m, n)th power group and add the (m, n)th power group to the priority power group set; Perform the operation of n=n+1, and then perform the priority power selection operation, priority power summation operation, and power difference judgment operation again; If not, then perform the operation m=m+1, update n to m+1, and perform the priority power selection operation, priority power summation operation and power difference judgment again until the m-th corrected power is less than or equal to half of the power missing amount; In the set of priority power groups, find the priority target power group with the minimum total path loss power; The candidate charging piles corresponding to the first and second priority powers in the priority target power group are used as compensation charging piles, and the first and second priority powers are used as adjustable powers.

5. A charging pile collaborative power supply control system, characterized in that, The system is used to execute the charging pile collaborative power supply control method as described in any one of claims 1 to 4, including: The acquisition module is used to obtain the target power requirement and the default power supply. A memory for storing the program of the charging pile collaborative power supply control method; The processor and the program in the memory can be loaded and executed by the processor to implement the charging pile collaborative power supply control method.

6. A smart terminal, characterized in that, It includes a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and executed as described in any one of claims 1 to 4.

7. A computer-readable storage medium, characterized in that, The computer program is stored that can be loaded by a processor and executed as described in any one of claims 1 to 4.

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